JP4621729B2 - Boiling water reactor - Google Patents

Boiling water reactor Download PDF

Info

Publication number
JP4621729B2
JP4621729B2 JP2007338335A JP2007338335A JP4621729B2 JP 4621729 B2 JP4621729 B2 JP 4621729B2 JP 2007338335 A JP2007338335 A JP 2007338335A JP 2007338335 A JP2007338335 A JP 2007338335A JP 4621729 B2 JP4621729 B2 JP 4621729B2
Authority
JP
Japan
Prior art keywords
pipe
reactor
water
plate
steam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2007338335A
Other languages
Japanese (ja)
Other versions
JP2008139017A (en
Inventor
光夫 若松
直 奈良林
秀夫 松井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP2007338335A priority Critical patent/JP4621729B2/en
Publication of JP2008139017A publication Critical patent/JP2008139017A/en
Application granted granted Critical
Publication of JP4621729B2 publication Critical patent/JP4621729B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin

Landscapes

  • Physical Water Treatments (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Description

本発明は、沸騰水型原子炉の給水加熱系の循環ループの一部である低圧ドレンタンク、また、復水器に係り、特に原子炉圧力容器で発生した酸素・水素等の不凝縮性ガスを抽出する効率を良くした沸騰水型原子炉に関する。   The present invention relates to a low-pressure drain tank that is a part of a circulation loop of a feed water heating system of a boiling water reactor, and also relates to a condenser, and in particular, non-condensable gases such as oxygen and hydrogen generated in a reactor pressure vessel The present invention relates to a boiling water reactor that improves the efficiency of extraction.

沸騰水型原子炉では、原子炉圧力容器で発生した蒸気を主蒸気系配管を介して蒸気タービンに送給し、ここで仕事に供された蒸気を復水器で凝縮させた後、この凝縮水を復水ポンプにより復水加熱器、脱気器等を介して給水系統に送り、この給水系統を経て原子炉圧力容器に原子炉給水として環流させている。   In boiling water reactors, the steam generated in the reactor pressure vessel is sent to the steam turbine through the main steam system piping, where the steam used for work is condensed in the condenser, and then this condensation is performed. Water is sent to a water supply system via a condensate pump, a deaerator, etc. by a condensate pump, and is circulated to the reactor pressure vessel as reactor water supply through this water supply system.

給水系統には給水力を付与するために給水ポンプとこの給水ポンプを境としてその上、下流側に配置される低圧給水ポンプおよび高圧給水ポンプとが設けられている。   The water supply system is provided with a water supply pump and a low-pressure water supply pump and a high-pressure water supply pump arranged on the downstream side of the water supply pump as a boundary in order to provide water supply power.

これらの給水加熱器はいずれも複数基で構成されており、円筒内に多数の加熱管を配し、その円筒内にタービン抽気または他の蒸気を流通させると共に、加熱管内に給水を通水させ、加熱管の周壁での熱交換によって給水を加熱するようにして、熱効率の向上を図るようにしている。   Each of these feed water heaters is composed of a plurality of units. A large number of heating pipes are arranged in the cylinder, turbine bleed air or other steam is circulated in the cylinder, and feed water is passed through the heating pipe. The feed water is heated by heat exchange at the peripheral wall of the heating tube, thereby improving the thermal efficiency.

図２２は、このような沸騰水型原子炉の給水加熱系の循環ループの概略構成を示す系統図である。   FIG. 22 is a system diagram showing a schematic configuration of the circulation loop of the feed water heating system of such a boiling water reactor.

図２２に示すように、原子炉圧力容器２０１内の炉心２０２で発生した熱により、ポンプ２０３により循環された水が水蒸気になる。この水蒸気を気水分離器２１９および蒸気乾燥器２２０で乾き度の高い蒸気にし、主蒸気配管２０４を経てタービン２０５で仕事をした後、復水器２０６で冷却することにより酸素等の非凝縮性ガスを含んだ凝縮水となり、低圧復水ポンプ２０７により加圧された後、空気抽出器２０８に至る。この空気抽出器２０８で一部抽出された空気はオフガス処理系２０９で処理され、許容値以下の低放射能レベルのガスは排気筒２１０から排気される。 As shown in FIG. 22, the water circulated by the pump 203 becomes steam due to the heat generated in the core 202 in the reactor pressure vessel 201. The steam is made into steam having a high degree of dryness by the steam separator 219 and the steam dryer 220, and after working on the turbine 205 through the main steam pipe 204, the steam is cooled by the condenser 206, thereby causing non-condensation such as oxygen. The condensed water containing gas is pressurized by the low-pressure condensate pump 207 and then reaches the air extractor 208. The air partially extracted by the air extractor 208 is processed by the off-gas processing system 209, and the gas having a low radioactivity level that is less than the allowable value is exhausted from the exhaust pipe 210.

また、凝縮水は高圧復水ポンプ２１１で加圧され、複数段の低圧給水加熱器２１４、２１５を通って給水ポンプ２２１でさらに高圧給水加熱器２１７へ送られる。この過程で高温高圧水は給水管２１８より原子炉圧力容器内に送られる循環パスを循環する。   Further, the condensed water is pressurized by the high-pressure condensate pump 211, passes through a plurality of low-pressure feed water heaters 214 and 215, and is further sent to the high-pressure feed water heater 217 by the feed water pump 221. In this process, the high-temperature high-pressure water circulates in a circulation path that is sent from the water supply pipe 218 into the reactor pressure vessel.

一方、複数段の給水加熱器２１４、２１５で加熱された一部の凝縮水は、低圧ドレンタンク２１３へ導かれる。低圧ドレンタンク２１３内では凝縮水中に含まれる酸素、水素等の非凝縮性ガスをオフガス抽出器２１６に吸引してオフガス処理系２０９で処理する。 On the other hand, a part of the condensed water heated by the multistage feed water heaters 214 and 215 is guided to the low-pressure drain tank 213. It is in the low pressure drain tank 213 for processing by sucking oxygen contained in the condensed water, the non-condensable gas such as hydrogen off-gas extractor 216 with off-gas treatment system 209.

ここで、低圧ドレンタンク２１３及びその周辺機器の構成の概要並びに給水加熱器からの凝縮水の流れを図２３に示す。低圧給水加熱器２１４を経た凝縮水は酸素等の非凝縮性ガスを飽和溶解度を上限として残存している。これはプラントで溶存酸素濃度としてモニターし、ある一定値以下になるようにコントロールする必要がある。 Here, the outline | summary of a structure of the low pressure drain tank 213 and its peripheral device, and the flow of the condensed water from a feed water heater are shown in FIG. The condensed water that has passed through the low-pressure feed water heater 214 remains with a non-condensable gas such as oxygen as the upper limit of saturation solubility. This must be monitored as the dissolved oxygen concentration at the plant and controlled to be below a certain value.

上記低圧給水加熱器２１４からドレンタンク２１３へ流入した凝縮水は、流入口部の正面に設けられた衝突板２２２に当たって下部へ流下し、ドレンタンク２１３の下部に配設されているドーナツ板２２３を経て低圧ドレンポンプ２１２へ導かれる。また、ドレンタンク２１３の上部には、オフガス抽出器２１６が非凝縮性ガスを吸引するために接続されている。   The condensed water flowing from the low-pressure feed water heater 214 into the drain tank 213 hits the collision plate 222 provided in front of the inflow port and flows down to the lower part of the drain tank 213. Then, it is guided to the low pressure drain pump 212. Further, an off-gas extractor 216 is connected to the upper portion of the drain tank 213 in order to suck non-condensable gas.

上記復水器２０６の概略構成を図２４に示す。この復水器２０６は、内部に冷却水給水システム２３１から送られる海水が導かれる伝熱管２３２及びその下方に傾斜させて配設された板２３３を備え、タービン２０５の出口蒸気が蒸気流入管２３０を経て復水器２０６に導かれ、冷却水給水システム２３１から送られる海水を伝熱管２３２内を通して管群内外で熱交換をし、凝縮水として傾斜板２３３に流下した後、低圧復水ポンプ２０７に至る。   A schematic configuration of the condenser 206 is shown in FIG. The condenser 206 includes a heat transfer pipe 232 into which seawater sent from the cooling water supply system 231 is guided and a plate 233 arranged to be inclined downward, and an outlet steam of the turbine 205 is supplied to the steam inflow pipe 230. After passing through the heat transfer pipe 232, the seawater sent from the cooling water supply system 231 to the condenser 206 is subjected to heat exchange inside and outside the tube group, and flows down to the inclined plate 233 as condensed water, and then the low-pressure condensate pump 207. To.

この際、凝縮水が液面２２４に流れ落ちるときガス巻き込みによる非凝縮性ガスを凝縮水に溶存されることは好ましくない。   At this time, when the condensed water flows down to the liquid level 224, it is not preferable that the non-condensable gas due to gas entrainment is dissolved in the condensed water.

このような構成の沸騰水型原子炉の給水加熱系の循環ループにおいて、図２２に示すように低圧給水加熱器２１４を経た凝縮水は酸素等の非凝縮性ガスを飽和溶解度を上限として残存している。特に溶存酸素は配管、炉内構造物等を酸化腐食する恐れがあるため、溶存酸素は除去処理して凝縮水を給水系に戻す必要がある。このため、プラントで溶存酸素濃度はモニターし、ある一定値以下になるようにコントロールする必要がある。   In the circulation loop of the feed water heating system of the boiling water reactor having such a configuration, the condensed water that has passed through the low pressure feed water heater 214 remains with a non-condensable gas such as oxygen as the upper limit of saturation solubility as shown in FIG. ing. In particular, since dissolved oxygen may oxidize and corrode piping, furnace structures, etc., it is necessary to remove the dissolved oxygen and return the condensed water to the water supply system. For this reason, it is necessary to monitor the dissolved oxygen concentration at the plant and control it to be below a certain value.

また、低圧給水加熱器２１４から低圧ドレンタンク２１３へ流入した凝縮水は、衝突板２２２に当たって下部へ流下し、ドーナツ板２２３を経て低圧ドレンポンプ２１２へ導かれる。低圧ドレンタンク２１３にはオフガス抽出器２１６が接続され、このオフガス抽出器２１６に非凝縮性ガスが吸引される。この際、吸引される非凝縮性ガスは凝縮水の表面からのみ溶出されてガス空間に抽出されるので、凝縮水のガス空間に接している表面積は大きい方が好ましい。   The condensed water flowing into the low pressure drain tank 213 from the low pressure feed water heater 214 hits the collision plate 222 and flows down to the lower portion, and is guided to the low pressure drain pump 212 through the donut plate 223. An off-gas extractor 216 is connected to the low-pressure drain tank 213, and non-condensable gas is sucked into the off-gas extractor 216. At this time, since the sucked non-condensable gas is eluted only from the surface of the condensed water and extracted into the gas space, it is preferable that the surface area in contact with the condensed water gas space is large.

しかし、上述した構成では、凝縮水の流れ、特に滝流れによりガスが凝縮水に巻き込まれるため、給水に溶存酸素等が多く含まれることになり、配管、炉心構造材等の腐食を招く恐れがある。   However, in the configuration described above, the gas is caught in the condensed water by the flow of the condensed water, in particular, the waterfall flow, so that the supply water contains a lot of dissolved oxygen and the like, which may cause corrosion of the piping, the core structure material, etc. is there.

さらに、図２４に示すように復水器２０６においては、タービン２０５の出口蒸気を蒸気流入管２３０を経て復水器２０６に導かれ、冷却水供給システム２３１から送られる海水を伝熱管２３２内を通して管群内外で熱交換をし、凝縮水として板２３３に流下した後、低圧復水ポンプ２０７に至る。   Further, as shown in FIG. 24, in the condenser 206, the outlet steam of the turbine 205 is guided to the condenser 206 through the steam inflow pipe 230, and the seawater sent from the cooling water supply system 231 is passed through the heat transfer pipe 232. After exchanging heat inside and outside the tube group and flowing down to the plate 233 as condensed water, the low pressure condensate pump 207 is reached.

この際、凝縮水が液面２２４に流れ落ちるときガス巻き込みによる非凝縮性ガスを凝縮水に溶存されることになる。特に滝流れによりガスが凝縮水に巻き込まれると、低圧ドレンタンク２１３と同様に給水中に溶存酸素等が多く含まれることになり配管、炉心構造材等の腐食をまねく恐れがある。   At this time, when the condensed water flows down to the liquid level 224, the non-condensable gas due to gas entrainment is dissolved in the condensed water. In particular, when the gas is caught in the condensed water by the waterfall flow, a lot of dissolved oxygen or the like is contained in the feed water as in the low-pressure drain tank 213, which may cause corrosion of the piping, the core structure material, and the like.

以上のように給水中の非凝縮性ガス、特に溶存酸素は構造材等の腐食を招き、構造健全性を低下させる恐れがある。また、非凝縮性ガスが給水中に多量含まれると、炉心での水の沸騰時に、単位重量当たりの潜熱が小さくなり熱効率の低下につながる。   As described above, the non-condensable gas in the feed water, particularly dissolved oxygen, may cause corrosion of the structural material and the like, which may reduce the structural integrity. Further, when a large amount of non-condensable gas is contained in the feed water, the latent heat per unit weight is reduced when water is boiled in the core, leading to a decrease in thermal efficiency.

本発明はこのような事情に鑑みてなされたもので、非凝縮性ガスが給水中に多量含まれることを防止することにより、炉心での水の沸騰時に単位重量当たりの潜熱を大きくでき、熱効率を向上させることができる沸騰水型原子炉を提供することを目的とする。   The present invention has been made in view of such circumstances, and by preventing a large amount of non-condensable gas from being contained in the feed water, latent heat per unit weight can be increased at the time of boiling of water in the core, and thermal efficiency An object of the present invention is to provide a boiling water reactor capable of improving the temperature.

本発明は上記の目的を達成するため、次のような手段により沸騰水型原子炉を構成するものである。   In order to achieve the above object, the present invention constitutes a boiling water reactor by the following means.

請求項１に対応する発明は、原子炉圧力容器で発生した蒸気を主蒸気系配管を介して蒸気タービンに送給し、この蒸気タービンを駆動させた蒸気を復水器で凝縮させた後、この凝縮水を復水ポンプにより加熱器および脱気器を介して給水系統に送り、原子炉圧力容器に原子炉給水として環流させる沸騰水型原子炉において、前記復水器は内部に冷却水給水システムから送られる冷水が導かれる伝熱管及びその下方に配設された板を備え、且つ復水溜まりの液面直下に前記伝熱管により熱交換されて前記板から流下する凝縮水を受ける板面に複数の孔を有する多孔板を水平に設けたものである。 In the invention corresponding to claim 1, the steam generated in the reactor pressure vessel is supplied to the steam turbine through the main steam system piping, and the steam that has driven the steam turbine is condensed in the condenser. sends this condensed water to the water supply system through the heater and the deaerator by the condensate pump, in a boiling water reactor to circulate as the reactor feedwater in nuclear reactor pressure vessel, said condenser cooling water inside A plate surface provided with a heat transfer pipe to which cold water sent from the water supply system is guided and a plate disposed therebelow, and receiving condensed water that is exchanged by the heat transfer tube immediately below the liquid level in the condensate reservoir and flows down from the plate A perforated plate having a plurality of holes is provided horizontally.

請求項２に対応する発明は、原子炉圧力容器で発生した蒸気を主蒸気系配管を介して蒸気タービンに送給し、この蒸気タービンを駆動させた蒸気を復水器で凝縮させた後、この凝縮水を復水ポンプにより加熱器および脱気器を介して給水系統に送り、原子炉圧力容器に原子炉給水として環流させる沸騰水型原子炉において、前記復水器は内部に冷却水給水システムから送られる冷水が導かれる伝熱管及びその下方に配設された板を備え、且つ前記板より流下する復水の落下部に受け容器を設け、その下部に有する下降管からの滝流れを受ける多孔受け皿を水平に設けるようにしたものである。 The invention corresponding to claim 2 is that steam generated in the reactor pressure vessel is supplied to the steam turbine via the main steam system pipe, and the steam that has driven the steam turbine is condensed in the condenser, sends this condensed water to the water supply system through the heater and the deaerator by the condensate pump, in a boiling water reactor to circulate as the reactor feedwater in nuclear reactor pressure vessel, said condenser cooling water inside A waterfall flow from a downcomer pipe having a heat transfer pipe to which cold water sent from a water supply system is guided and a plate disposed below the heat transfer pipe, and a receiving container is provided in a condensate falling part flowing down from the plate, The perforated saucer for receiving is horizontally provided.

請求項３に対応する発明は、原子炉圧力容器で発生した蒸気を主蒸気系配管を介して蒸気タービンに送給し、この蒸気タービンを駆動させた蒸気を復水器で凝縮させた後、この凝縮水を復水ポンプにより加熱器および脱気器を介して給水系統に送り、原子炉圧力容器に原子炉給水として環流させる沸騰水型原子炉において、前記復水器は内部に冷却水給水システムから送られる冷水が導かれる伝熱管及びその下方に配設された板を備え、且つ前記板より流下する復水の落下部に受け容器を設け、その下部に有する下降管の下部に対応させてこの下降管を中心に周面に多数の流出孔を有するドーナツ状の管を水平に配設すると共に、このドーナツ状の管と下降管との間を複数本の連通管により接続するようにしたものである。 In the invention corresponding to claim 3, after the steam generated in the reactor pressure vessel is supplied to the steam turbine via the main steam system piping, the steam that has driven the steam turbine is condensed in the condenser, sends this condensed water to the water supply system through the heater and the deaerator by the condensate pump, in a boiling water reactor to circulate as the reactor feedwater in nuclear reactor pressure vessel, said condenser cooling water inside Corresponding to the lower part of the downcomer pipe that has a heat transfer pipe to which cold water sent from the water supply system is guided and a plate disposed below it, and a receiving container is provided at the falling part of the condensate that flows down from the plate The donut-shaped pipe having a large number of outflow holes on the peripheral surface is arranged horizontally around the downcomer pipe, and the donut-shaped pipe and the downcomer pipe are connected by a plurality of communication pipes. It is a thing.

上記請求項１及び請求項３に対応する発明の沸騰水型原子炉にあっては、非凝縮性ガスが給水中に多量に含まれることを防止でき、炉心での水の沸騰時に単位重量当たりの潜熱を大きくでき、熱効率を向上させることが可能となる。   In the boiling water reactor of the invention corresponding to the first and third aspects of the present invention, it is possible to prevent a large amount of noncondensable gas from being contained in the feed water, and per unit weight when water is boiled in the reactor core. The latent heat can be increased and the thermal efficiency can be improved.

本発明によれば、非凝縮性ガスが給水中に多量に含まれることを防止することにより、炉心での水の沸騰時に単位重量当たりの潜熱を大きくでき、熱効率を向上させることができる沸騰水型原子炉を提供できる。   According to the present invention, by preventing the non-condensable gas from being contained in a large amount in the feed water, the boiling water that can increase the latent heat per unit weight at the time of boiling the water in the core and improve the thermal efficiency. A type nuclear reactor can be provided.

以下本発明による沸騰水型原子炉の実施の形態を図面を参照して説明する。   Embodiments of a boiling water reactor according to the present invention will be described below with reference to the drawings.

図１は本発明の第１の実施の形態における給水加熱系の循環ループの一部に設けられる低圧ドレンタンク及びその周辺部の概略構成を示す断面図、図２２と同一部品には同一符号を付して説明する。   FIG. 1 is a cross-sectional view showing a schematic configuration of a low-pressure drain tank provided in a part of a circulation loop of a feed water heating system and a peripheral portion thereof in the first embodiment of the present invention, and the same parts as those in FIG. A description will be given.

なお、全体の構成については図２１に示したものと概略同様なので、ここではその説明を省略する。   Note that the overall configuration is substantially the same as that shown in FIG. 21, and a description thereof will be omitted here.

第１の実施の形態では、図１に示すように低圧給水加熱器２１４から低圧ドレンタンク２１３に凝縮水を導入する配管１を低圧ドレンタンク２１３の壁面を貫通させて水平状態に配設し、そのタンク内に位置する配管１の開口部に端栓２により閉塞し、また配管周面に複数の流出孔４を千鳥状に配列して設けるようにしたものである。この場合、端栓２に対しても流出孔４が設けられる。   In the first embodiment, as shown in FIG. 1, the pipe 1 for introducing condensed water from the low-pressure feed water heater 214 to the low-pressure drain tank 213 is disposed horizontally through the wall surface of the low-pressure drain tank 213, The opening of the pipe 1 located in the tank is closed by an end plug 2, and a plurality of outflow holes 4 are arranged in a staggered manner on the peripheral surface of the pipe. In this case, an outflow hole 4 is also provided for the end plug 2.

このような構成の第１の実施の形態によれば、原子炉圧力容器２０１で発生した酸素・水素等の非凝縮性ガスを含んだ凝縮水が低圧給水加熱器２１４から低圧ドレンタンク２１３に配管１を通して流入するが、この凝縮水は配管１に設けられた複数の流出孔４から液滴３として噴出し、飛散させることができる。   According to the first embodiment having such a configuration, condensed water containing non-condensable gas such as oxygen and hydrogen generated in the reactor pressure vessel 201 is piped from the low-pressure feed water heater 214 to the low-pressure drain tank 213. 1, the condensed water can be ejected as droplets 3 from a plurality of outflow holes 4 provided in the pipe 1 and scattered.

ここで、流出孔４は半径がＲで、軸方向に対するピッチＰ、周方向個数Ｍとすれば、総個数Ｎ＝Ｐ×Ｍとなり、また端栓２の流出孔の総個数Ｈとすれば、これらの流出孔４の総開口面積はπＲ2 ×（Ｎ＋Ｈ）である。 Here, if the outflow holes 4 have a radius R, the pitch P with respect to the axial direction and the number M in the circumferential direction, the total number N = P × M, and the total number H of the outflow holes in the end plug 2 The total opening area of these outflow holes 4 is πR 2 × (N + H).

従って、各流出孔４から液滴３となって流出することにより、従来のように一様に流下させる状態に比べて低圧ドレンタンク２１３内の空間部と接する表面積が大きくなり、液滴表面からの非凝縮性ガスの溶出が多くなる。このため、オフガス抽出器２１６により非凝縮性ガスを大量に吸引することができる。   Accordingly, by flowing out as droplets 3 from each outflow hole 4, the surface area in contact with the space in the low-pressure drain tank 213 is larger than in the state of flowing down uniformly as in the prior art, and from the surface of the droplets. Elution of non-condensable gas increases. For this reason, a large amount of non-condensable gas can be sucked by the off-gas extractor 216.

このように本実施形態によれば、非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減することができる。   As described above, according to this embodiment, a large amount of non-condensable gas is extracted from the surface of the condensed water in the form of droplets 3 into the gas space, so the concentration of non-condensable gas such as dissolved oxygen in the feed water Can be reduced.

上記実施の形態では、配管周面に複数の流出孔４を千鳥状に配列して設ける場合について述べたが、配管１に設けられる流出孔４として軸方向並びに周方向に等間隔を存して正方状に配列してもよく、また上半部周面のみに千鳥状態もしくは正方状に配列してもよい。   In the above embodiment, the case where the plurality of outflow holes 4 are arranged in a staggered manner on the circumferential surface of the pipe has been described. However, the outflow holes 4 provided in the pipe 1 are equally spaced in the axial direction and the circumferential direction. They may be arranged in a square shape, or may be arranged in a staggered state or a square shape only on the peripheral surface of the upper half.

さらに、図２（ａ），（ｂ）に示すように配管１の下半部周面だけに、複数の流出孔４を千鳥状態もしくは正方状に配列してもよい。このように配管１の下半部周面にのみ流出孔４の設けることにより、液滴３同士が重なり合うことがなくなるので、それだけ空間部と接する表面積が大きくなり、液滴表面からの非凝縮性ガスの溶出が多くなる。   Further, as shown in FIGS. 2A and 2B, the plurality of outflow holes 4 may be arranged in a staggered state or a square shape only on the peripheral surface of the lower half of the pipe 1. By providing the outflow holes 4 only on the peripheral surface of the lower half of the pipe 1 in this manner, the droplets 3 do not overlap each other, so that the surface area in contact with the space is increased and non-condensable from the droplet surface. Increased gas elution.

また、上記実施の形態では、低圧ドレンタンク２１３内に水平状態で挿入された配管１に径の等しい複数個の流出孔４を設ける場合について述べたが、配管１の端栓２側から凝縮水の上流側に向って孔径を徐々に大きくした流出孔４を配列したり、その逆に孔径が徐々に小さくした流出孔４を配列したりするようにしても、前述同様の作用効果を得ることができる。 In the above embodiment, the case where a plurality of outflow holes 4 having the same diameter are provided in the pipe 1 inserted horizontally in the low-pressure drain tank 213 has been described. or arranging the outlet hole 4 was gradually increased pore diameter toward the upstream side of, be or arranged outlet hole 4 which pore diameter is gradually reduced to the contrary, the advantages of the above same as be able to.

さらに、上記実施の形態では、配管１に円形の流出孔４を設ける場合について述べたが、円形の一部を切欠いた流出孔としてもよい。さらに、この流出孔の形状としては、三角、四角、星形、円形の一部を内側へ突出させた流出孔としてもよい。   Furthermore, although the case where the circular outflow hole 4 is provided in the pipe 1 has been described in the above embodiment, an outflow hole in which a part of the circular shape is cut off may be used. Furthermore, the shape of the outflow hole may be an outflow hole in which a part of a triangle, a square, a star, or a circle protrudes inward.

このように形状の異なる流出孔を配管１に設けても、前述同様の作用効果を得ることができる。 Be thus provided with different outflow hole shapes in the pipe 1, it is possible to obtain the advantageous effects mentioned above as well.

図３は本発明の第２の実施の形態における低圧給水加熱器から供給される酸素、水素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す断面図である。   FIG. 3 shows a part of a pipe for horizontally introducing condensate containing non-condensable gas such as oxygen and hydrogen supplied from a low-pressure feed water heater according to the second embodiment of the present invention into a low-pressure drain tank. FIG.

第２の実施の形態では、図３（ａ）及び（ｂ）に示すように低圧ドレンタンク２１３内に位置する配管１の周面に噴出口側を絞り加工した複数の絞付き流出孔１２を周方向及び軸方向に適宜の間隔を存して設けるようにしたものである。   In the second embodiment, as shown in FIGS. 3 (a) and 3 (b), a plurality of constricted outflow holes 12 obtained by drawing the outlet side on the peripheral surface of the pipe 1 located in the low pressure drain tank 213 are provided. It is provided with appropriate intervals in the circumferential direction and the axial direction.

ここで、上記構成に代えて図３（ｃ）に示すように配管１の周面に中央部を絞り加工した複数の絞付き流出孔１３を周方向及び軸方向に適宜の間隔を存して設けるようにしてもよい。また、図３（ｄ）に示すように配管１の周面に入口側を絞り加工した複数の絞付き流出孔１４を周方向及び軸方向に適宜の間隔を存して設けるようにしてもよい。   Here, instead of the above configuration, as shown in FIG. 3 (c), a plurality of constricted outflow holes 13 whose center portions are drawn on the peripheral surface of the pipe 1 are provided at appropriate intervals in the circumferential direction and the axial direction. You may make it provide. Further, as shown in FIG. 3 (d), a plurality of constricted outflow holes 14 in which the inlet side is drawn on the peripheral surface of the pipe 1 may be provided at appropriate intervals in the circumferential direction and the axial direction. .

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水が絞付き流出孔の絞り部で一旦絞られた状態、または絞られてから拡散した状態で低圧ドレンタンク２１３内に噴出するので、凝縮水は各流出孔から流出する際、液滴になり易くなる。これにより、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器により大量に吸引することができる。   With such a configuration, the condensed water containing a non-condensable gas such as oxygen is once squeezed at the squeezed portion of the squeezed outflow hole, or is diffused after being squeezed, into the low pressure drain tank 213. Since it is ejected, the condensed water tends to become droplets when it flows out from each outflow hole. As a result, the non-condensable gas is more eluted from the droplet surface as in the above-described embodiment, and a large amount of non-condensable gas can be sucked by the off-gas extractor.

従って、本実施の形態によれば、非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, according to the present embodiment, a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, so the concentration of non-condensable gas such as dissolved oxygen in the feed water Can be reduced.

上記第２の実施の形態では、低圧ドレンタンク２１３内に位置する配管１の周面に絞り部を有する流出孔１２，１３，１４に設けて凝縮水の流速を高める場合について述べたが、絞り部を設ける代りに各流出孔の出口部にじゃま板を設けるようにしてもよい。   In the second embodiment, the case where the flow rate of the condensed water is increased by providing the outflow holes 12, 13, 14 having the throttle portions on the peripheral surface of the pipe 1 located in the low pressure drain tank 213 has been described. Instead of providing the portion, a baffle plate may be provided at the outlet portion of each outflow hole.

この場合、各流出孔の出口部に板状の一対のじゃま板を孔中心部でクロスするように配設するようにしてもよく、また各流出孔の出口部の中央部に円盤状のじゃま板を設けるようにしてもよい。   In this case, a pair of plate-shaped baffles may be arranged to cross at the center of the hole at the outlet of each outflow hole, and a disc-shaped block at the center of the outlet of each outflow hole. A plate may be provided.

このように各流出孔にじゃま板を設けることにより、酸素等の非凝縮性ガスを含んだ凝縮水はじゃま板の配置に応じた流速分布で各流出孔から液滴となって低圧ドレンタンク２１３内に噴出、飛散させることができる。これにより、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器２１６により大量に吸引することができる。   Thus, by providing the baffle plate in each outflow hole, the condensed water containing a non-condensable gas such as oxygen becomes droplets from each outflow hole with a flow velocity distribution according to the arrangement of the baffle plate, and the low pressure drain tank 213. It can be ejected and scattered inside. As a result, as in the above-described embodiment, non-condensable gas is more eluted from the droplet surface, and a large amount of non-condensable gas can be sucked by the off-gas extractor 216.

従って、前述同様に非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, as described above, a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, so that the concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

さらに、凝縮水の流速を高めて液滴として噴出させる手段として、配管１に設けられた各流出孔に噴射ノズルの一端部をそれぞれ挿入して設けるようにしてもよい。   Furthermore, as a means for increasing the flow rate of the condensed water and ejecting it as droplets, one end of the injection nozzle may be inserted into each outflow hole provided in the pipe 1.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水が噴射ノズルより液滴３として低圧ドレンタンク２１３内に噴出、飛散させることができるので、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器２１６により大量に吸引することができる。   With such a configuration, condensed water containing a non-condensable gas such as oxygen can be jetted and scattered as droplets 3 from the jet nozzle into the low-pressure drain tank 213, so that it is the same as in the above-described embodiment. In addition, the elution of noncondensable gas from the droplet surface increases, and a large amount of noncondensable gas can be sucked by the off-gas extractor 216.

図４は本発明の第３の実施の形態における低圧給水加熱器から供給される酸素、水素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す構成説明図である。   FIG. 4 shows a part of a pipe for horizontally introducing condensed water containing non-condensable gas such as oxygen and hydrogen supplied from a low-pressure feed water heater according to the third embodiment of the present invention into a low-pressure drain tank. FIG.

第３の実施の形態では、図４に示すように配管１の周面に周方向及び軸方向に複数の流出孔４を設けるとともに、これらの各流出孔４に対応させて旋回噴出ノズル１７をそれぞれ設けるようにしたものである。   In the third embodiment, as shown in FIG. 4, a plurality of outflow holes 4 are provided in the circumferential direction and the axial direction on the peripheral surface of the pipe 1, and the swirl jet nozzles 17 are made to correspond to the respective outflow holes 4. Each is provided.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水が旋回噴出ノズル１７より図示左回りに旋回させて液滴３として低圧ドレンタンク内に遠心力で噴出、飛散させることができるので、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器により大量に吸引することができる。   With such a configuration, the condensed water containing a non-condensable gas such as oxygen is swung counterclockwise from the swirl jet nozzle 17 to be ejected and scattered as a droplet 3 into the low-pressure drain tank by centrifugal force. Therefore, the elution of the non-condensable gas from the droplet surface increases as in the above-described embodiment, and a large amount of the non-condensable gas can be sucked by the off-gas extractor.

上記第３の実施の形態では、各流出孔４に旋回噴出ノズル１７を設けたが、これに代えて低圧ドレンタンク内に位置する配管１の周面に複数の斜行流出孔を周方向及び軸方向に適宜の間隔を存して設けるようにしてもよい。   In the third embodiment, the swirl nozzle 17 is provided in each outflow hole 4, but instead of this, a plurality of oblique outflow holes are provided in the circumferential direction on the peripheral surface of the pipe 1 located in the low-pressure drain tank. An appropriate interval may be provided in the axial direction.

図５は本発明の第４の実施の形態における低圧給水加熱器から供給される酸素、水素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す構成説明図である。   FIG. 5 is a part of a pipe for horizontally introducing condensed water containing non-condensable gas such as oxygen and hydrogen supplied from a low-pressure feed water heater according to the fourth embodiment of the present invention into a low-pressure drain tank. FIG.

第４の実施の形態では、図５に示すように低圧ドレンタンク内に位置する配管１の開口端に球状体１９により閉塞し、この球状体１９と配管１の周面に周方向及び軸方向に複数の流出孔４をそれぞれ適宜の間隔を存して設けるようにしたものである。   In the fourth embodiment, as shown in FIG. 5, the opening end of the pipe 1 located in the low-pressure drain tank is closed by a spherical body 19, and the spherical body 19 and the circumferential surface of the pipe 1 are circumferentially and axially arranged. A plurality of outflow holes 4 are provided at appropriate intervals.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水が配管１と球状体１９に設けられた流出孔４より液滴３として低圧ドレンタンク内に噴出、飛散させることができるので、その液滴の流出箇所が多くなり、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器により大量に吸引することができる。   With such a configuration, condensed water containing a non-condensable gas such as oxygen can be ejected and scattered as a droplet 3 from the outflow hole 4 provided in the pipe 1 and the spherical body 19 into the low-pressure drain tank. As a result, the number of locations where the droplets flow out increases, and the amount of non-condensable gas elution from the droplet surface increases as in the above-described embodiment, and a large amount of non-condensable gas is sucked by the off-gas extractor. Can do.

従って、前述同様に非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, as described above, a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, so that the concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

上記第４の実施の形態では、配管１の開口端に球状体１９を設けたが、これに代えて、配管１の開口端をくさび状の閉塞体で閉塞し、この閉塞体と配管１の周面に複数の流出孔４を周方向及び軸方向にそれぞれ適宜の間隔を存して設けるようにしてもよい。   In the fourth embodiment, the spherical body 19 is provided at the opening end of the pipe 1. Instead, the opening end of the pipe 1 is closed with a wedge-shaped closing body. A plurality of outflow holes 4 may be provided on the circumferential surface with appropriate intervals in the circumferential direction and the axial direction.

また、配管１の開口端にこれより径の小さな平形管を一体的に取付けて、この平形管の下面部に複数の流出孔をそれぞれ適宜の間隔を存して設けるようにしてもよい。   Alternatively, a flat tube having a smaller diameter than that of the pipe 1 may be integrally attached to the opening end of the pipe 1, and a plurality of outflow holes may be provided at appropriate intervals on the lower surface of the flat tube.

図６は本発明の第５の実施の形態における低圧給水加熱器から供給される酸素、水素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す構成説明図である。   FIG. 6 is a part of a pipe for horizontally introducing condensed water containing a non-condensable gas such as oxygen and hydrogen supplied from a low-pressure feed water heater in a fifth embodiment of the present invention into a low-pressure drain tank. FIG.

第５の実施の形態では、図６に示すように低圧ドレンタンク内に位置する配管１の開口端に枝状の管体２２のほぼ中央部を連通させて取付け、この管体２２に周面に複数の流出孔４を適宜の間隔を存してそれぞれ設けるようにしたものである。   In the fifth embodiment, as shown in FIG. 6, a substantially central portion of the branch-like tube body 22 is attached to the open end of the pipe 1 located in the low-pressure drain tank, and the peripheral surface is attached to the tube body 22. A plurality of outflow holes 4 are provided at appropriate intervals.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水が管体２２に設けられた流出孔４より液滴３として低圧ドレンタンク内に噴出、飛散させることができるので、その液滴の流出箇所が多くなり、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器により大量に吸引することができる。   With such a configuration, condensed water containing a non-condensable gas such as oxygen can be ejected and scattered as a droplet 3 from the outflow hole 4 provided in the tube body 22 into the low-pressure drain tank. The number of droplets flowing out increases, and the elution of noncondensable gas from the surface of the droplet increases as in the above-described embodiment, and a large amount of noncondensable gas can be sucked by the off-gas extractor.

従って、前述同様に非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, as described above, a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, so that the concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

上記第５の実施の形態では、配管１の開口端に枝状の管体２２を設けたが、これに代えて、配管１の開口端にコ字形の分岐する管体のほぼ中央部を連通させて取付け、この管体の周面に複数の流出孔４を適宜の間隔を存してそれぞれ設けたり、上下方向に分岐する管体のほぼ中央部を連通させて取付け、この管体の周面に複数の流出孔４を適宜の間隔を存してそれぞれ設けるようにしたものでも、前述同様の作用効果を得ることができる。   In the fifth embodiment, the branch-like tube body 22 is provided at the opening end of the pipe 1, but instead, the substantially central portion of the U-shaped branching tube body communicates with the opening end of the pipe 1. A plurality of outflow holes 4 are provided on the peripheral surface of the tubular body at appropriate intervals, respectively, or are attached by connecting the substantially central portion of the tubular body that branches in the vertical direction. Even if the plurality of outflow holes 4 are provided on the surface with appropriate intervals, the same effects as described above can be obtained.

図７は本発明の第６の実施の形態における低圧給水加熱器から供給される酸素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す構成説明図である。   FIG. 7 shows a part of a pipe for introducing condensate containing non-condensable gas such as oxygen supplied from a low-pressure feed water heater into a low-pressure drain tank in a horizontal state in the sixth embodiment of the present invention. FIG.

第６の実施の形態では、図７に示すように配管１の周面に複数の流出孔４を適宜の間隔を存して周方向及び軸方向にそれぞれ設け、また配管１の内周面に軸方向に凝縮水の流れがジグザグ状になるようにじゃま板２６を設けるようにしたものである。   In the sixth embodiment, as shown in FIG. 7, a plurality of outflow holes 4 are provided in the circumferential direction and the axial direction, respectively, at appropriate intervals on the peripheral surface of the pipe 1, and on the inner peripheral surface of the pipe 1. A baffle plate 26 is provided so that the flow of condensed water is zigzag in the axial direction.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水はじゃま板２６によりジグザグ状に流れることで、凝縮水から非凝縮性ガスが分離し易い状態となり、この状態で各流出孔４から液滴３として低圧ドレンタンク内に噴出、飛散させることができるので、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器により大量に吸引することができる。   With such a configuration, the condensed water containing a non-condensable gas such as oxygen flows in a zigzag manner by the baffle plate 26, so that the non-condensable gas is easily separated from the condensed water. Since it can be ejected and scattered as a droplet 3 from the outflow hole 4 into the low-pressure drain tank, the elution of the non-condensable gas from the droplet surface increases as in the above-described embodiment, and the non-condensable gas is A large amount can be aspirated by an off-gas extractor.

従って、前述同様に非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, as described above, a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, so that the concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

上記実施の形態では、凝縮水の流れがジグザグ状になるようにじゃま板２６を配設したが、これに代えて配管１内に螺旋状の案内羽根を軸方向に挿入するようにしても前述同様の作用効果を得ることができる。   In the above embodiment, the baffle plate 26 is disposed so that the flow of the condensed water is zigzag-shaped, but instead of this, the spiral guide vanes may be inserted into the pipe 1 in the axial direction. Similar effects can be obtained.

図８は本発明の第７の実施の形態における低圧給水加熱器から供給される酸素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す構成説明図である。   FIG. 8 shows a part of a pipe for introducing condensate containing non-condensable gas such as oxygen supplied from a low-pressure feed water heater into a low-pressure drain tank in a horizontal state in the seventh embodiment of the present invention. FIG.

第７の実施の形態では、図８（ａ）に示すように低圧ドレンタンク内に位置する部分の配管１の周面に流出孔４を周方向及び軸方向に適宜の間隔を存してそれぞれ設け、また配管１の外周側面に上部から下部にかけて水平方向の長さが段階的に短く、且つ水平方向両端部を上向きに直角に折曲げた軸方向に長形なＬ形フィン２８を水平状態にしてそれぞれ取付けるようにしたものである。   In the seventh embodiment, as shown in FIG. 8 (a), the outflow holes 4 are provided at appropriate intervals in the circumferential direction and the axial direction on the peripheral surface of the pipe 1 located in the low-pressure drain tank. In addition, the horizontal length of the L-shaped fin 28 that is long in the axial direction with the horizontal length gradually shortened from the top to the bottom on the outer peripheral side surface of the pipe 1 In this way, each is attached.

この場合、図８（ｂ）に示すようにＬ形端部のほぼ中央部に切欠３０を設けた切り欠きフィン２９を配管１に前述同様に取付けてもよい。また、複数個の切欠きを設けたＬ形フィンを配管に前述同様に取付けるようにしてもよい。 In this case, as shown in FIG. 8 (b), a notch fin 29 having a notch 30 provided substantially at the center of the L-shaped end may be attached to the pipe 1 in the same manner as described above. Further, an L-shaped fin provided with a plurality of notches may be attached to the pipe in the same manner as described above.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水は各流出孔４から噴出した後、各Ｌ形フィン２８上を水平方向に流れて、液滴３として低圧ドレンタンク内に飛散させることができる。   With such a configuration, the condensed water containing a non-condensable gas such as oxygen is ejected from each outflow hole 4 and then flows horizontally on each L-shaped fin 28 to form droplets 3 as a low-pressure drain tank. Can be scattered inside.

特に、流量が定格１００％に達しない５０％、７５％の部分負荷運転の場合、起動時の低流量運転では流出孔４からの流速が遅いため噴出しづらく、隣接する流出孔４からの液滴が合体して表面積が小さくなるが、本実施の形態のようにＬ形フィン２８又は３０を配列することにより、低流量の条件でもフィンの両端から液滴３として流下させることができるため、液滴になり易く表面積は大きくなる。また、１００％定格運転では流出孔４からの流速が大きいため、液滴３になり易い。   In particular, in the case of 50% and 75% partial load operation where the flow rate does not reach the rated value of 100%, the flow rate from the outflow hole 4 is slow in the low flow rate operation at the start-up, so that the liquid from the adjacent outflow hole 4 is difficult to eject. Although the droplets coalesce and the surface area becomes small, by arranging the L-shaped fins 28 or 30 as in the present embodiment, it is possible to flow down as droplets 3 from both ends of the fins even under low flow conditions. It tends to become droplets and the surface area becomes large. Moreover, since the flow velocity from the outflow hole 4 is large in the 100% rated operation, the droplet 3 is likely to be formed.

従って、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器により大量に吸引することができる。   Therefore, similarly to the above-described embodiment, non-condensable gas is more eluted from the droplet surface, and a large amount of non-condensable gas can be sucked by the off-gas extractor.

また、前述同様に非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Further, as described above, a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, so that the concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

上記第７の実施の形態では、配管１の外周側面にＬ形フィン２８を設けたが、このＬ形フィン２８の板面に複数の流出孔を設けるようにしてもよく、またＬ形フィンに代えて平板状のフィンを設ける構成としても前述同様の作用効果を得ることができる。 Aforementioned seventh embodiment has been provided an L-shaped fins 28 on the outer circumferential surface of the pipe 1 may be provided with a plurality of outlet holes in the plate surface of the L-shaped fins 28 and the L-shaped fins Instead, the same effect as described above can be obtained even when a flat fin is provided.

さらに、配管１の外周面に螺旋状のフィンを軸方向に巻き付ける構成としてもよい。この構成にあっては、配管１の各流出孔４から噴出する液滴の一部は螺旋フィンに沿って流れ落ち、他は直接流出孔４から液滴が噴出して飛散させることができ、前述同様の作用効果を得ることができる。   Furthermore, it is good also as a structure which winds a helical fin around the outer peripheral surface of the piping 1 to an axial direction. In this configuration, some of the liquid droplets ejected from the respective outflow holes 4 of the pipe 1 can flow down along the spiral fins, and others can be directly ejected from the outflow holes 4 and scattered. Similar effects can be obtained.

図９は本発明の第８の実施の形態における低圧給水加熱器から供給される酸素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す構成説明図である。   FIG. 9 shows a part of a pipe for introducing condensate containing non-condensable gas such as oxygen supplied from a low-pressure feed water heater in a horizontal state into a low-pressure drain tank in the eighth embodiment of the present invention. FIG.

第８の実施の形態では、図９（ａ），（ｂ）に示すように低圧ドレンタンク２１３内に位置する部分の配管１の先端部に回転散水多孔羽根３４を回転可能に取付け、この回転散水多孔羽根３４に配管１内の凝縮水を開口孔を通して流出させ、回転エネルギを与えるようにしたものである。この場合、回転散水多孔羽根３４は凝縮水の流路が卍形状に形成され、その端部には複数の流出孔がそれぞれ設けられている。   In the eighth embodiment, as shown in FIGS. 9 (a) and 9 (b), a rotating sprinkling perforated blade 34 is rotatably attached to the tip of the pipe 1 at a portion located in the low pressure drain tank 213, and this rotation The condensed water in the pipe 1 is caused to flow out through the opening hole to the sprinkling perforated blade 34 to give rotational energy. In this case, the rotating water sprinkling perforated blade 34 has a flow path of condensed water formed in a bowl shape, and a plurality of outflow holes are provided at the ends thereof.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水が配管１の先端部に回転可能に取付けられた回転散水多孔羽根３４に流入することで回転しながら、その端部に有する流出孔から液滴となって低圧ドレンタンク２１３内に噴出し飛散させることができるので、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器により大量に吸引することができる。   With such a configuration, the condensed water containing a non-condensable gas such as oxygen flows into the rotating water sprinkling porous blade 34 that is rotatably attached to the distal end portion of the pipe 1, and its end portion rotates. In the same manner as in the above-described embodiment, non-condensable gas elution from the droplet surface increases and non-condensable. A large amount of sex gas can be sucked by an off-gas extractor.

従って、本実施の形態によれば、非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, according to the present embodiment, a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, so the concentration of non-condensable gas such as dissolved oxygen in the feed water Can be reduced.

図１０は本発明の第９の実施の形態における低圧給水加熱器から供給される酸素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す構成説明図である。   FIG. 10 shows a part of piping for horizontally introducing condensed water containing a non-condensable gas such as oxygen supplied from a low-pressure feed water heater in a ninth embodiment of the present invention into a low-pressure drain tank. FIG.

第９の実施の形態では、図１０（ａ），（ｂ）に示すように低圧ドレンタンク２１３内に位置する部分の配管１を内管とし、その外側に外管３５を設けた二重管構造とし、これら配管１及び外管３５の周面に適宜の間隔を存して流出孔４及び３６を周方向及び軸方向にそれぞれ設けるようにしたものである。   In the ninth embodiment, as shown in FIGS. 10 (a) and 10 (b), a portion of the pipe 1 located in the low-pressure drain tank 213 is an inner pipe, and an outer pipe 35 is provided outside the pipe. The structure is such that the outflow holes 4 and 36 are provided in the circumferential direction and the axial direction, respectively, with appropriate intervals on the peripheral surfaces of the pipe 1 and the outer pipe 35.

ここで、内管である配管１に設けられた流出孔４と外管３５に設けられた流出孔３６は、それぞれ同径の場合と不均一径の場合がある。また、配管１の流出孔４と外管３５の流出孔３６がそれぞれ同径の場合、不均一径の場合のいずれにおいても、その孔位置関係を互いにずらせて設ける場合がある。   Here, the outflow hole 4 provided in the pipe 1 which is an inner pipe and the outflow hole 36 provided in the outer pipe 35 may have the same diameter or a non-uniform diameter, respectively. In addition, when the outflow hole 4 of the pipe 1 and the outflow hole 36 of the outer pipe 35 have the same diameter or nonuniform diameter, the positional relationship between the holes may be shifted from each other.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水が配管１の流出孔４から流出して一旦外管３５内に溜まり、その後外管３５の流出孔３６から液滴となって低圧ドレンタンク２１３内に噴出し飛散させることができるので、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器により大量に吸引することができる。   With such a configuration, condensed water containing a non-condensable gas such as oxygen flows out from the outflow hole 4 of the pipe 1 and temporarily accumulates in the outer pipe 35, and then drops from the outflow hole 36 of the outer pipe 35. Thus, the non-condensable gas can be eluted from the droplet surface in the same manner as in the above-described embodiment, and the non-condensable gas can be discharged by the off-gas extractor. A large amount can be aspirated.

図１１は本発明の第１０の実施の形態における低圧給水加熱器から供給される酸素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す構成説明図である。   FIG. 11 shows a part of a pipe for introducing condensate containing noncondensable gas such as oxygen supplied from a low-pressure feed water heater in a horizontal state into a low-pressure drain tank in the tenth embodiment of the present invention. FIG.

第１０の実施の形態では、図１１に示すように配管１を水平状態にして低圧ドレンタンク２１３の側壁面を貫通させ、且つ開口端をタンク内壁面に臨ませて接続し、この接続部を囲むように低圧ドレンタンク内壁面に箱体３８を取付けるとともに、この箱体３８の各面に複数の流出孔４をそれぞれ設けるようにしたものである。   In the tenth embodiment, as shown in FIG. 11, the pipe 1 is placed in a horizontal state and penetrated through the side wall surface of the low-pressure drain tank 213 and the open end faces the inner wall surface of the tank. A box 38 is attached to the inner wall surface of the low-pressure drain tank so as to surround it, and a plurality of outflow holes 4 are provided on each surface of the box 38.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水が配管１の開口端より箱体３８に流入し、さらにこの箱体３８の各面に設けられた流出孔４より液滴３として低圧ドレンタンク２１３内に噴出、飛散させることができるので、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器により大量に吸引することができる。   With such a configuration, condensed water containing a non-condensable gas such as oxygen flows into the box 38 from the opening end of the pipe 1, and further from the outflow holes 4 provided on each surface of the box 38. Since the droplet 3 can be ejected and scattered in the low-pressure drain tank 213, the non-condensable gas is eluted from the droplet surface in the same manner as in the above-described embodiment, and the non-condensable gas is off-gas extractor. A large amount can be sucked.

従って、前述同様に非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, as described above, a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, so that the concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

ここで、上記第１０の実施の形態において、箱体３８内に配管１の開口端に対向させてじゃま板を設けるようにしてもよい。このようにすれば、配管１から流出した凝縮水は一旦じゃま板に当たってから箱体３８の各面に設けられた流出孔４より液滴となって低圧ドレンタンク２１３内に噴出し、飛散させることができる。   Here, in the tenth embodiment, a baffle plate may be provided in the box 38 so as to face the opening end of the pipe 1. In this way, the condensed water that has flowed out of the pipe 1 once hits the baffle plate, then becomes droplets from the outflow holes 4 provided on each surface of the box 38 and is ejected into the low-pressure drain tank 213 to be scattered. Can do.

また、箱体３８に代えてコの字形の板を設け、この板の各面に複数の流出孔を設けてもよく、また上部を開放したＬ字形の板を設け、この板の各面に複数の流出孔を設けてもよい。   In addition, a U-shaped plate may be provided instead of the box 38, and a plurality of outflow holes may be provided on each surface of the plate, or an L-shaped plate having an open upper portion may be provided, and each surface of the plate may be provided. A plurality of outflow holes may be provided.

さらに、下部を開放した逆Ｌ字形の板を設け、この板の各面に複数の流出孔４を設けてもよく、また半球状の板を配管の開口端を囲むように設けてその半球面に複数の流出孔を設けるようにしてもよい。   Further, an inverted L-shaped plate having an open lower portion may be provided, and a plurality of outflow holes 4 may be provided on each surface of the plate. A hemispherical plate is provided so as to surround the opening end of the pipe, and its hemispherical surface. A plurality of outflow holes may be provided.

このような構成においても、前述同様の作用効果を得ることができる。   Even in such a configuration, the same effects as described above can be obtained.

図１２は本発明の第１１の実施の形態における低圧給水加熱器から供給される酸素等の非凝縮性ガスを含んだ凝縮水を低圧ドレンタンクに水平状態にして導入する配管の一部を示す構成説明図である。   FIG. 12 shows a part of piping for introducing condensate containing non-condensable gas such as oxygen supplied from a low-pressure feed water heater into a low-pressure drain tank in a horizontal state in the eleventh embodiment of the present invention. FIG.

第１１の実施の形態では、図１２に示すように低圧ドレンタンク２１３に水平状態にしてタンク側壁面を貫通させ、且つ開口端をタンク内壁面に臨ませて接続し、この接続部を囲むように低圧ドレンタンク内壁面に内側箱体４４を取付けるとともに、この箱体４４の外側に外側箱体４５をそれぞれ設けて二重箱形構造とし、各箱体の各面に複数の流出孔４をそれぞれ設けるようにしたものである。   In the eleventh embodiment, as shown in FIG. 12, the low pressure drain tank 213 is placed in a horizontal state so as to penetrate the tank side wall surface, and the open end faces the inner wall surface of the tank. An inner box 44 is attached to the inner wall surface of the low-pressure drain tank, and an outer box 45 is provided outside the box 44 to form a double box structure, and a plurality of outflow holes 4 are provided on each surface of each box. It is intended to be provided.

このような構成とすれば、酸素等の非凝縮性ガスを含んだ凝縮水が配管１の開口端より内側箱体４４に流入し、この内側箱体４４の各面に設けられた流出孔４より液滴３として外側箱体４５内に流出し、さらにこの外側箱体４５の各面に設けられた流出孔４より液滴３として低圧ドレンタンク２１３内に噴出し、飛散させることができるので、前述した実施の形態と同様に液滴表面からの非凝縮性ガスの溶出が多くなり、非凝縮性ガスをオフガス抽出器２１６により大量に吸引することができる。   With such a configuration, condensed water containing a non-condensable gas such as oxygen flows into the inner box 44 from the opening end of the pipe 1, and the outflow holes 4 provided on each surface of the inner box 44. As a droplet 3, it flows out into the outer box 45, and further, it can be ejected as a droplet 3 into the low-pressure drain tank 213 from the outflow holes 4 provided on each surface of the outer box 45 and scattered. As in the above-described embodiment, elution of noncondensable gas from the droplet surface increases, and a large amount of noncondensable gas can be sucked by the off-gas extractor 216.

ここで、二重箱形構造に代えて、内側開放板と外側開放板とを一部がラップするように組合せて設ける構成とし、これら内側開放板と外側開放板に流出孔を設けるようにしても、前述同様の作用効果が得られる。   Here, instead of the double box-shaped structure, the inner opening plate and the outer opening plate are combined and provided so that they partially wrap, and the inner opening plate and the outer opening plate may be provided with outflow holes. The same effects as described above can be obtained.

図１３は本発明の第１２の実施の形態における低圧ドレンタンク及びその周辺機器の構成説明図である。   FIG. 13 is a diagram illustrating the configuration of a low-pressure drain tank and its peripheral devices in the twelfth embodiment of the present invention.

第１２の実施の形態では、図１３に示すように低圧給水加熱器２１４より低圧ドレンタンク２１３に原子炉圧力容器で発生した酸素等の非凝縮性ガスを含む凝縮水を導入する配管１を水平状態にして低圧ドレンタンク２１３の壁面を貫通させて配設し、そのタンク内に位置する配管１の周面に複数の流出孔４を周方向及び軸方向にそれぞれ設け、また低圧ドレンタンク２１３内の底部に配管１の各流出孔４から噴出した液滴３が液面に達する前に受ける板面に多数の孔を有する受板４８を設けるようにしたものである。   In the twelfth embodiment, as shown in FIG. 13, the pipe 1 for introducing condensed water containing non-condensable gas such as oxygen generated in the reactor pressure vessel from the low pressure feed water heater 214 to the low pressure drain tank 213 is horizontally disposed. The low-pressure drain tank 213 is placed through the wall surface, and a plurality of outflow holes 4 are provided in the circumferential direction and the axial direction on the peripheral surface of the pipe 1 located in the tank. A receiving plate 48 having a large number of holes is provided on the plate surface received before the droplet 3 ejected from each outflow hole 4 of the pipe 1 reaches the liquid level.

このような構成の本実施の形態によれば、原子炉圧力容器で発生した酸素等の非凝縮性ガスを凝縮水と一緒に複数の流出孔４から液滴３として噴出し、飛散させることができる。   According to the present embodiment having such a configuration, non-condensable gas such as oxygen generated in the reactor pressure vessel can be ejected as droplets 3 from the plurality of outflow holes 4 together with the condensed water and scattered. it can.

従って、従来のように凝縮水を一様に流下させる場合に比べて表面積が大きく、液滴表面からの非凝縮性ガスの溶出が多くなるため、ドレンタンク２１３に非凝縮性ガスを大量に吸引することができる。また、液面２２４への液滴３群の突入によるエネルギーを多孔板４８へ衝突させることにより分散させ、ガス２２５の巻き込み量を低減できる。 Thus, larger surface area as compared with the case where the conventional uniformly flow down condensate as, for elution of non-condensable gases from the droplet surface increases, a large amount of non-condensable gases in the drain tank 21 3 Can be aspirated. Further, the energy generated by the entry of the three liquid droplets into the liquid surface 224 is dispersed by colliding with the perforated plate 48, so that the amount of the gas 225 entrained can be reduced.

よって、本実施形態によれば非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されることとに加えて、給水へ流れる凝縮水液面でのガス巻き込みを低減できるため、これら両者の方法によって給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, according to the present embodiment, in addition to extracting a large amount of non-condensable gas from the surface of the condensed water that has become droplets 3 into the gas space, gas entrainment at the level of the condensed water flowing to the feed water is performed. Since it can reduce, the content concentration of non-condensable gases, such as dissolved oxygen in feed water, can be reduced by both these methods.

図１４は本発明の第１３の実施の形態における低圧ドレンタンク及びその周辺機器の構成説明図である。   FIG. 14 is a configuration explanatory diagram of a low-pressure drain tank and its peripheral devices in the thirteenth embodiment of the present invention.

第１３の実施の形態では、図１４に示すように低圧給水加熱器２１４より低圧ドレンタンク２１３に原子炉圧力容器で発生した酸素等の非凝縮性ガスを含む凝縮水を導入する配管として、低圧ドレンタンク２１３の下部壁面を水平状態に貫通させると共に低圧ドレンタンク内において垂直に立上がる垂直配管４９を配設し、その液面より上方に位置する垂直配管４９の周面に複数の流出孔４を適宜の間隔を存して周方向及び軸方向にそれぞれ設けるようにしたものである。   In the thirteenth embodiment, as shown in FIG. 14, a low-pressure feed water heater 214 introduces condensed water containing non-condensable gas such as oxygen generated in a reactor pressure vessel into a low-pressure drain tank 213 as a low-pressure pipe. A vertical pipe 49 that vertically penetrates the lower wall surface of the drain tank 213 and rises vertically in the low-pressure drain tank is disposed, and a plurality of outflow holes 4 are formed on the peripheral surface of the vertical pipe 49 positioned above the liquid level. Are provided in the circumferential direction and the axial direction with appropriate intervals.

このような構成の本実施の形態によれば、配管上の設備の関係で低圧ドレンタンク２１３の液面の上方部の壁面を水平状態に貫通させることができないような場合でも、原子炉圧力容器で発生した酸素等の非凝縮性ガスを凝縮水と一緒に複数の流出孔４から液滴３として噴出し、飛散させることができる。   According to the present embodiment having such a configuration, even when the wall surface above the liquid level of the low-pressure drain tank 213 cannot be horizontally penetrated due to the equipment on the piping, the reactor pressure vessel The non-condensable gas such as oxygen generated in step 1 can be ejected as droplets 3 from the plurality of outflow holes 4 together with the condensed water and scattered.

従って、従来のように凝縮水を一様に流下させる場合に比べて表面積が大きく、液滴表面からの非凝縮性ガスの溶出が多くなるため、ドレンタンク２１３に非凝縮性ガスを大量に吸引することができる。 Thus, larger surface area as compared with the case where the conventional uniformly flow down condensate as, for elution of non-condensable gases from the droplet surface increases, a large amount of non-condensable gases in the drain tank 21 3 Can be aspirated.

よって、非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, since a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, the concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

上記第１３の実施の形態において、低圧ドレンタンク２１３内に位置する垂直配管４９の液面より上方の周面に設けられる複数の流出孔として、水平から角度αだけ上部に傾けた斜行流出孔を設けるようにしてもよい。   In the thirteenth embodiment, as the plurality of outflow holes provided on the peripheral surface above the liquid level of the vertical pipe 49 located in the low pressure drain tank 213, the oblique outflow holes inclined upward from the horizontal by an angle α. May be provided.

このような斜行流出孔とすれば、凝縮水が液滴となって上向きに噴出するので、拡散し易くなる。   With such an oblique outflow hole, the condensed water is ejected upward as droplets, so that it becomes easy to diffuse.

図１５は本発明の第１４の実施の形態における低圧ドレンタンク内に挿入された垂直配管の一部を示す構成説明図である。   FIG. 15 is an explanatory diagram showing a part of a vertical pipe inserted into a low-pressure drain tank according to a fourteenth embodiment of the present invention.

第１４の実施の形態では、低圧ドレンタンク２１３内の液面２２４より上方の垂直配管４９の周面に複数の流出孔４を適宜の間隔を存して周方向及び軸方向にそれぞれ設け、また配管内部に複数段のオリフィス５５を各孔位置と重ならないように軸方向に適宜の間隔を存してそれぞれ設けるようにしたものである。   In the fourteenth embodiment, a plurality of outflow holes 4 are provided in the circumferential direction and the axial direction at appropriate intervals on the circumferential surface of the vertical pipe 49 above the liquid level 224 in the low-pressure drain tank 213, and A plurality of stages of orifices 55 are respectively provided in the pipe so as not to overlap each hole position with an appropriate interval in the axial direction.

このような構成の本実施の形態によれば、垂直配管４９内の上方部が複数段のオリフィス５５により仕切られた各部屋で凝縮水の流入量が調整されるので、酸素等の非凝縮性ガスを凝縮水と一緒に複数の流出孔４から流速が制御された液滴３として噴出し、飛散させることができる。 According to the present embodiment having such a configuration, since the upper portion of the vertical pipe 49 is inflow of condensed water is adjusted in each room partitioned by a plurality of stages of the orifice 55, the non-condensable such as oxygen The sex gas can be ejected together with the condensed water from the plurality of outflow holes 4 as droplets 3 with controlled flow rates and scattered.

従って、従来のように凝縮水を一様に流下させる場合に比べて表面積が大きく、液滴表面からの非凝縮性ガスの溶出が多くなるため、ドレンタンク２１３に非凝縮性ガスを大量に吸引することができる。 Thus, larger surface area as compared with the case where the conventional uniformly flow down condensate as, for elution of non-condensable gases from the droplet surface increases, a large amount of non-condensable gases in the drain tank 21 3 Can be aspirated.

よって、非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, since a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, the concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

上記第１４の実施の形態において、垂直配管４９内に設けられた複数段のオリフィス５５の各中心部に存する孔を通して各段に対応させてじゃま板を設けるようにしてもよい。   In the fourteenth embodiment, a baffle plate may be provided corresponding to each stage through a hole in each central portion of a plurality of stages of orifices 55 provided in the vertical pipe 49.

このような構成としても流出孔４から噴出する液滴３の流速が制御され、より顕著に作用効果を発揮させることができる。   Even with such a configuration, the flow velocity of the droplet 3 ejected from the outflow hole 4 is controlled, and the effects can be exhibited more remarkably.

上記第１４の実施の形態においては、垂直配管４９内にオリフィスを複数段にして設ける場合について述べたが、低圧ドレンタンク２１３内の垂直配管４９内の上端に三角すい状ブロックをその先端を下向きにして取付け、三角すい状ブロックと垂直配管４９の内周面との間に存する間隙が上端より下方に向かって連続的に広がるようにして各流出孔４から流出する凝縮水の吹出し圧力を調整するようにしてもよい。   In the fourteenth embodiment, the case where the orifices are provided in a plurality of stages in the vertical pipe 49 has been described. However, a triangular conical block is placed at the upper end of the vertical pipe 49 in the low-pressure drain tank 213 with its tip facing downward. And adjust the blowout pressure of the condensed water flowing out from each outflow hole 4 so that the gap existing between the triangular conical block and the inner peripheral surface of the vertical pipe 49 continuously extends downward from the upper end. You may make it do.

上記と同様に垂直配管４９の上端に取り連れられる三角すい状ブロックに代えて、垂直配管４９の上端より下方に向かって段階的に大きさを小さくした段付きブロックを取付けるようにしてもよい。同様にオリフィスとブロックを組合せたじゃま板を設けるようにしてもよい。   In the same manner as described above, a stepped block whose size is gradually reduced from the upper end of the vertical pipe 49 may be attached instead of the triangular cone block taken along the upper end of the vertical pipe 49. Similarly, a baffle plate combining an orifice and a block may be provided.

図１６は本発明の第１５の実施の形態における低圧ドレンタンク内に挿入された垂直配管の一部を示す構成説明図である。   FIG. 16 is an explanatory diagram showing a part of a vertical pipe inserted into a low-pressure drain tank in the fifteenth embodiment of the present invention.

第１５の実施の形態では、図１６に示すように低圧ドレンタンク２１３内の液面２２４より上方の垂直配管４９の周面に複数の流出孔４を適宜の間隔を存して周方向及び軸方向にそれぞれ設け、また垂直配管４９の外周面に水平状態にして径の異なる複数の円板状のフィン６１を各孔位置と重ならないように軸方向に適宜の間隔を存してそれぞれ取付けるようにしたものである。 In the fifteenth embodiment, as shown in FIG. 16, a plurality of outflow holes 4 are provided in the circumferential direction and the axis with appropriate intervals on the peripheral surface of the vertical pipe 49 above the liquid surface 224 in the low-pressure drain tank 213. respectively in the direction, also each presence an appropriate interval in the axial direction as the outer peripheral surface a plurality of disc-shaped full fin 61 having different diameters in the horizontal state not overlapping with each hole position of the vertical pipe 49 It is intended to be installed.

この場合、各フィン６１はその外周縁部を垂直に立上げて断面Ｌ型とし、その立上部に適宜の間隔を存して複数個の切欠部６０が設けられている。また、フィン６１の径は最上部から最下部に向って段階的に小さくなるようにしてある。 In this case, the full fin 61 is a cross-sectional L-type raised its outer peripheral edge vertically, a plurality of notch 60 is provided in presence an appropriate interval on the raised portion. Further, the diameter of the fin 61 is made smaller in steps from the uppermost part toward the lowermost part.

このような構成の本実施の形態によれば、原子炉圧力容器で発生した酸素等の非凝縮性ガスが凝縮水と一緒に垂直配管４９の複数の流出孔４から液滴３として噴出すると、この液滴３は各フィン６１に溜まり、やがて切欠部６０より溢れでるとき再度液滴３となって流下することにより飛散させることができる。特に、５０％、７５％の部分負荷運転の場合では流出孔４からの流速が遅いため、噴出しずらく隣接する流出孔からの液滴が合体して表面積が小さくなるが、フィン６１の切欠部６０から液滴として流下させることができる。   According to this embodiment having such a configuration, when non-condensable gas such as oxygen generated in the reactor pressure vessel is ejected as droplets 3 from the plurality of outflow holes 4 of the vertical pipe 49 together with the condensed water, The droplet 3 accumulates in the fins 61 and can eventually be scattered by flowing down as the droplet 3 again when it overflows from the notch 60. In particular, in the case of partial load operation of 50% and 75%, the flow velocity from the outflow hole 4 is slow, so that droplets from adjacent outflow holes that are difficult to eject are combined and the surface area becomes small. It can be made to flow down from the part 60 as a droplet.

従って、従来のように凝縮水を一様に流下させる場合に比べて表面積が大きく、液滴表面からの非凝縮性ガスの溶出が多くなるため、ドレンタンク２１３に非凝縮性ガスを大量に吸引することができる。特に低流量運転の時、フィン６１を伝わって切欠部６０から液滴３として飛散するため，その効果はより一層顕著になる。 Thus, larger surface area as compared with the case where the conventional uniformly flow down condensate as, for elution of non-condensable gases from the droplet surface increases, a large amount of non-condensable gases in the drain tank 21 3 Can be aspirated. Especially when low flow operation, since the scattered from notch 60 transmitted the full fin 61 as a droplet 3, the effect is even more pronounced.

よって、非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, since a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, the concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

上記実施の形態では垂直配管４９の外周面にＬ形の立上部に切欠部６０を有するフィン６１を取付けたが、切欠部のないフィンを取付けるようにしても同様の作用効果を得ることができる。   In the above-described embodiment, the fin 61 having the notch portion 60 is attached to the outer peripheral surface of the vertical pipe 49, but the same effect can be obtained even if the fin without the notch portion is attached. .

また、上記実施の形態において、垂直配管４９と円板状のフィン６１との間に複数枚の案内羽根を放射状に配設すると共に、フィン６１に周縁部にＬ形の立上部に複数の放射孔を適宜の間隔を存して設ける構成としてもよい。   In the above embodiment, a plurality of guide vanes are arranged radially between the vertical pipe 49 and the disc-shaped fin 61, and a plurality of radiations are provided on the peripheral edge of the fin 61 with an L-shaped upright portion. The holes may be provided with appropriate intervals.

このような構成とすれば、垂直配管４９の各流出孔４から凝縮水が液滴となってフィン６１に流出すると、この液滴は各案内羽根によって囲まれた空間部に溜まり、やがてＬ形の立上部に有する放射孔より再度液滴となって低圧ドレンタンク内に流下するので、前述同様の作用効果を得ることができる。   With such a configuration, when condensed water flows out from each outflow hole 4 of the vertical pipe 49 to the fin 61 as a droplet, the droplet accumulates in a space surrounded by each guide blade, and eventually becomes an L shape. Since the liquid drops again from the radiation holes in the upper part of the gas flow and flow down into the low-pressure drain tank, the same effect as described above can be obtained.

図１７は本発明の第１６の実施の形態における低圧ドレンタンク内に挿入された垂直配管の一部を示す構成説明図である。   FIG. 17 is an explanatory diagram showing a part of a vertical pipe inserted into the low-pressure drain tank in the sixteenth embodiment of the present invention.

第１６の実施の形態では、図１７に示すように低圧ドレンタンク２１３内の液面２２４より上方の垂直配管４９の周面に複数の流出孔４を適宜の間隔を存して周方向及び軸方向にそれぞれ設け、また垂直配管４９の外周面に各孔位置と重ならないように螺旋状フィン６８を取付ける構成としたものである。 In the sixteenth embodiment, as shown in FIG. 17, a plurality of outflow holes 4 are provided in the circumferential direction and the axis with appropriate intervals on the peripheral surface of the vertical pipe 49 above the liquid surface 224 in the low-pressure drain tank 213. respectively in the direction, also it is obtained by a structure for attaching the spiral full fin 68 so as not to overlap with each hole located on the outer peripheral surface of the vertical pipe 49.

このような構成の本実施の形態によれば、原子炉圧力容器で発生した酸素等の非凝縮性ガスが凝縮水と一緒に垂直配管４９の複数の流出孔４から液滴３として噴出すると、この液滴３は螺旋状フィン６８に沿って流下するが、その過程で再度液滴３となって落下することで低圧ドレンタンク２１３内に遠心力で飛散させることができる。 According to this embodiment having such a configuration, when non-condensable gas such as oxygen generated in the reactor pressure vessel is ejected as droplets 3 from the plurality of outflow holes 4 of the vertical pipe 49 together with the condensed water, the droplets 3 flows down along the spiral fins 68, but may be scattered by centrifugal force to the low pressure drain reservoir 21 3 by falling as droplets 3 again in the process.

従って、従来のように凝縮水を一様に流下させる場合に比べて表面積が大きく、液滴表面からの非凝縮性ガスの溶出が多くなるため、ドレンタンク２１３に非凝縮性ガスを大量に吸引することができる。特に低流量運転の時、螺旋状フィン６８を伝わって液滴３となって飛散するため，その効果はより一層顕著になる。 Thus, larger surface area as compared with the case where the conventional uniformly flow down condensate as, for elution of non-condensable gases from the droplet surface increases, a large amount of non-condensable gases in the drain tank 21 3 Can be aspirated. Especially when low flow operation, for scattering as droplets 3 transmitted the spiral full fin 68, the effect is even more pronounced.

よって、本実施形態によれば、非凝縮性ガスを液滴３になった凝縮水の表面から大量にガス空間に抽出されるので、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   Therefore, according to the present embodiment, a large amount of non-condensable gas is extracted from the surface of the condensed water that has become droplets 3 into the gas space, so the content concentration of non-condensable gas such as dissolved oxygen in the feed water is reduced. Can be reduced.

上記実施の形態では、垂直配管４９の外周面に各孔位置と重ならないように螺旋状フィン６８を取付けるようにしたが、この垂直配管を内管としその外側にアニュラス部を存して外管を設けた垂直二重管構造とし、これら内管及び外管の周囲に複数の流出孔を周方向及び軸方向に適宜の間隔を存してそれぞれ設けるようにしても前述と同様の作用効果を得ることができる。 In the above embodiment has been to attach the spiral full fin 68 as the outer peripheral surface of the vertical pipe 49 do not overlap with each hole location, and presence of the annulus on the outside and the inner tube of the vertical pipe Even if a vertical double pipe structure with an outer pipe is provided and a plurality of outflow holes are provided around the inner pipe and the outer pipe at appropriate intervals in the circumferential direction and the axial direction, the same effect as described above. An effect can be obtained.

図１８は本発明の第１７の実施の形態における復水器及びその近傍の概略構成を示す断面図で、図２３と同一部分には同一符号を付して説明する。   FIG. 18 is a cross-sectional view showing a schematic configuration of the condenser and its vicinity in the seventeenth embodiment of the present invention. The same parts as those in FIG.

図１８に示すように復水器２０６は、内部に冷却水給水システム２３１から送られる海水が導かれる伝熱管２３２及びその下方に配設された板２３３を備え、図示しないタービンの出口蒸気が蒸気流入管を経て復水器２０６に導かれ、冷却水給水システム２３１から送られる海水を伝熱管２３２内を通して管群内外で熱交換をし、凝縮水として板２３３に流下した後、低圧復水ポンプ２０７に至るようになっている。   As shown in FIG. 18, the condenser 206 includes a heat transfer pipe 232 into which seawater sent from the cooling water supply system 231 is guided and a plate 233 disposed below the heat transfer pipe 232. After the seawater sent from the cooling water supply system 231 through the inflow pipe and sent from the cooling water supply system 231 exchanges heat inside and outside the tube group through the heat transfer pipe 232 and flows down to the plate 233 as condensed water, the low pressure condensate pump 207.

第１７の実施の形態では、このような構成の復水器２０６において、復水溜まりの液面上部近傍に多孔板１０１を水平に設けるようにしたものである。この多孔板１０１は、複数の流出孔１０２が板面に適宜の間隔を存してそれぞれ設けたものである。 In the seventeenth embodiment, in the condenser 206 having such a configuration, the porous plate 101 is provided horizontally in the vicinity of the upper part of the liquid level of the condensate reservoir. The perforated plate 101 has a plurality of outflow holes 102 provided on the plate surface at appropriate intervals.

このような構成の第１７の実施の形態によれば、原子炉圧力容器で発生した酸素等の非凝縮性ガスを含む復水が熱交換された凝縮水として板２３３より液面２２４へ突入するときのエネルギーを多孔板１０１へ衝突させて分散させた後、流出孔１０２より液滴１０３として落下させることにより、液面２２４からのガスの随伴量を低減できる。従って、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。 According to a seventeenth embodiment of such a configuration, condensate enters from the plate 233 to the liquid surface 224 as condensed water heat exchanger comprising a non-condensable gas such as oxygen generated in the reactor pressure vessel After the energy at the time collides with the perforated plate 101 and is dispersed, it is dropped as the droplet 103 from the outflow hole 102, whereby the amount of gas accompanying from the liquid surface 224 can be reduced. Therefore, the content concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

上記第１７の実施の形態では、板２３３より多孔板１０１へ凝縮水を直接衝突させるようにしたが、板２３３と多孔板１０１との間にじゃま板を水平にして設け、非凝縮性ガスを含む復水が液面２２４へ突入するときのエネルギーをじゃま板１０４と水平多孔板１０１へ２段階衝突させて分散させるようにしても上記実施の形態と同様の作用効果を得ることができる。   In the seventeenth embodiment, the condensed water is directly collided from the plate 233 to the porous plate 101. However, a baffle plate is provided horizontally between the plate 233 and the porous plate 101, and a non-condensable gas is provided. Even if the energy when the condensate contained enters the liquid surface 224 is collided with the baffle plate 104 and the horizontal perforated plate 101 in two stages and dispersed, the same effects as those of the above embodiment can be obtained.

また、上記第１７の実施の形態において、多孔板を設けずに板２３３の下方に複数のじゃま板を水平にして階段状に配設し、凝縮水が上段から下段に順次流下させ、最下段のじゃま板より液滴として復水溜まりに落下させるようにしても前述同様の作用効果を得ることができる。 Further, in the embodiment of the seventeenth, disposed stepwise by a plurality of Flip Yama plate below the plate 233 without providing the porous plate horizontally, condensed water is sequentially flow down from the upper stage to the lower stage, be allowed to fall into the condensate puddle as droplets from Flip lowermost Yamaban can be obtained above same effect.

ここで、各じゃま板に複数の流下孔をそれぞれ設け、この流下孔からも液滴を落下させるようにしてもよい。   Here, each baffle plate may be provided with a plurality of flow holes and the liquid droplets may be dropped from the flow holes.

さらに、上記第１７の実施の形態において、多孔板を設けずに板２３３の下方に板２３３から流下する凝縮水を溜める堰を水平に設け、この堰から徐々に凝縮水が溢れでるようにしてもよい。   Further, in the seventeenth embodiment, a weir for storing condensed water flowing down from the plate 233 is provided horizontally below the plate 233 without providing a porous plate so that the condensed water gradually overflows from this weir. Also good.

また、上記第１７の実施の形態において、多孔板を設けずに板２３３の下方に複数の山形状の板を水平状態に並設し、板２３３から流下する凝縮水を山形板１１４へ衝突させることにより酸素等の非凝縮性ガスを含む復水が液面２２４へ突入するときのエネルギーを分散させるようにしても、前述と同様の作用効果を得ることができる。   Further, in the seventeenth embodiment, a plurality of mountain-shaped plates are arranged horizontally below the plate 233 without providing a porous plate, and the condensed water flowing down from the plate 233 collides with the mountain-shaped plate 114. Thus, even if the energy when condensate containing a non-condensable gas such as oxygen enters the liquid surface 224 is dispersed, the same effect as described above can be obtained.

上記第１７の実施の形態において、多孔板を設けずに板２３３の下方に底面に複数の流出孔を有し、且つ内部に金タワシを挿入した受皿を設け、この受皿に板２３３から流下する凝縮水を受皿へ衝突させた後、流出孔より凝縮水を液滴として落下させるようにしても前述と同様の作用効果を得ることができる。   In the seventeenth embodiment, there is provided a tray having a plurality of outflow holes on the bottom surface of the bottom of the plate 233 without inserting a perforated plate and having a gold scrubbing inserted therein, and flows down from the plate 233 to the tray. Even if the condensed water is collided with the receiving tray and then the condensed water is dropped as a droplet from the outflow hole, the same effect as described above can be obtained.

さらに、上記第１７の実施の形態において、多孔板を設けずに板２３３の下方に突部流出孔付き多孔板を水平に設け、酸素等の非凝縮性ガスを含む復水が液面２２４へ突入するときのエネルギーを突部流出孔付き多孔板へ衝突させて分散させた後、突部流出孔より復水溜め部に落下させるようにしても前述同様の作用効果を得ることができる。   Further, in the seventeenth embodiment, a perforated plate with protruding outflow holes is horizontally provided below the plate 233 without providing a perforated plate, and condensate containing non-condensable gas such as oxygen is supplied to the liquid surface 224. Even if the energy at the time of rushing is made to collide and disperse into the perforated plate with the protruding portion outflow hole and then dropped from the protruding portion outflow hole to the condensate reservoir, the same effect as described above can be obtained.

図１９は本発明の第１８の実施の形態における復水器及びその近傍の概略構成を示す断面図である。   FIG. 19 is a cross-sectional view showing a schematic configuration of a condenser and the vicinity thereof in an eighteenth embodiment of the present invention.

第１８の実施の形態では、図１９に示すように復水器２０６内の復水溜まりの液面直下に多孔板１２８を水平に設けるようにしたものである。この多孔板１２８は、複数の流出孔１０２が板面に適宜の間隔を存してそれぞれ設けたものである。 In the eighteenth embodiment, as shown in FIG. 19, a perforated plate 128 is horizontally provided immediately below the liquid level of the condensate reservoir in the condenser 206. The perforated plate 128 has a plurality of outflow holes 102 provided at appropriate intervals on the plate surface.

このような構成の第１８の実施の形態によれば、原子炉圧力容器で発生した酸素等の非凝縮性ガスを含む復水が熱交換された凝縮水として板２３３より液面２２４へ突入するときのエネルギーを多孔板１２８へ衝突させることにより、液面２２４からのガスの随伴量を低減できる。従って、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。 According to the eighteenth embodiment having such a configuration, condensate enters from the plate 233 to the liquid surface 224 as condensed water heat exchanger comprising a non-condensable gas such as oxygen generated in the reactor pressure vessel When the energy at the time collides with the perforated plate 128, the accompanying amount of gas from the liquid surface 224 can be reduced. Therefore, the content concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

上記第１８の実施の形態において、さらに復水溜まりの液面上部近傍にも多孔板１０１を水平に設けることにより、酸素等の非凝縮性ガスを含む復水が液面２２４へ突入するときのエネルギーを液面上部近傍の多孔板と液面直下に設けた水平多孔板１２８へ衝突させて分散させることができ、前記実施の形態に比べてより顕著な作用効果を得ることができる。 In the eighteenth embodiment, the energy when the condensate containing a non-condensable gas such as oxygen enters the liquid surface 224 is further provided horizontally in the vicinity of the upper liquid surface of the condensate pool. Can collide with the perforated plate near the upper part of the liquid level and the horizontal perforated plate 128 provided immediately below the liquid level and can be dispersed, and a more remarkable effect can be obtained as compared with the above embodiment.

上記第１８の実施の形態では、復水器２０６内の復水溜まりの液面直下に多孔板１２８を水平に設けたが、これに代えて復水溜まりの液面近傍に複数のボール状のうき１８８を浮かせるようにしてもよい。 In the eighteenth embodiment, the porous plate 128 is provided horizontally just below the level of the condensate pool in the condenser 206, but instead, a plurality of ball-shaped bumps 188 near the level of the condensate pool. You may make it float.

このような構成としても、酸素等の非凝縮性ガスを含む復水が液面へ突入するときのエネルギーを液面に浮かせた複数のボール状のうき１８８へ衝突させることにより分散させ、液面からのガスの随伴量を低減できる。   Even in such a configuration, the energy when condensate containing a non-condensable gas such as oxygen enters the liquid surface is dispersed by causing it to collide with a plurality of ball-shaped punches 188 floating on the liquid surface. The amount of gas entrained from can be reduced.

ここで、液面に浮くボール状のうき１８８と液面下に沈む大密度ボール状のうき１８９を滝流れの緩衝材として設けるようにしてもよい。さらに、これらのボール状のうきをそれぞれ鎖状のもので接続するようにしてもよい。   Here, a ball-shaped protrusion 188 that floats on the liquid surface and a high-density ball-shaped protrusion 189 that sinks below the liquid surface may be provided as a buffer material for the waterfall flow. Furthermore, these ball-shaped bumps may be connected by chain-like ones.

図２０は本発明の第１９の実施の形態における復水器及びその近傍の概略構成を示す断面図である。   FIG. 20 is a sectional view showing a schematic configuration of the condenser and the vicinity thereof in the nineteenth embodiment of the present invention.

第１９の実施の形態では、図２０に示すように復水器２０６内の復水の落下部に受け容器１３９を設け、その下部に有する下降管１４１からの滝流れを受ける多孔受け皿１４０を水平に設けるようにしたものである。   In the nineteenth embodiment, as shown in FIG. 20, a receiving container 139 is provided in the condensate falling portion in the condenser 206, and the perforated receiving tray 140 that receives the waterfall flow from the downcomer pipe 141 provided in the lower portion thereof is horizontally disposed. It is intended to be provided.

このような構成の第１９の実施の形態によれば、原子炉圧力容器で発生した酸素等の非凝縮性ガスを含む復水が液面２２４へ突入するときのエネルギーを液面近傍に設けた受容器１３９で受け、その下部に有する下降管１４１からの滝流れを多孔受け皿１４０に衝突させて分散させることにより、液面からのガスの随伴量を低減できる。従って、給水中の溶存酸素等の非凝縮性ガスの含有濃度を低減できる。   According to the nineteenth embodiment having such a configuration, the energy when condensate containing non-condensable gas such as oxygen generated in the reactor pressure vessel enters the liquid surface 224 is provided in the vicinity of the liquid surface. The incidental amount of gas from the liquid surface can be reduced by causing the waterfall flow from the downcomer 141 received at the receiver 139 to collide with the perforated tray 140 and disperse. Therefore, the content concentration of non-condensable gas such as dissolved oxygen in the feed water can be reduced.

ここで、上記実施の形態において、下降管の下方に設けられた多孔受け皿に半球状のブロックを設け、その球面に滝流れを衝突するようにしても前述同様の作用効果を得ることができる。   Here, in the above embodiment, even if a hemispherical block is provided in the perforated tray provided below the downcomer and the waterfall flow collides with the spherical surface, the same effect as described above can be obtained.

図２１は本発明の第２０の実施の形態における復水器内の受け容器の下部に有する下降管に接続されたドーナツ状の多孔管を示す斜視図である。   FIG. 21 is a perspective view showing a donut-shaped perforated pipe connected to a downcomer pipe having a lower part of a receiving container in a condenser according to a twentieth embodiment of the present invention.

第２０の実施の形態では、図２１に示すように復水器内に設けられた図示しない受け容器に連通する下降管１４１の下部に対応させてこの下降管を中心に周面に多数の流出孔を有するドーナツ状の管１５１を水平状態に配設すると共に、このドーナツ状の管１５１と下降管１４１との間を複数本の連通管１５０により接続するようにしたものである。   In the twentieth embodiment, as shown in FIG. 21, a large number of outflows are caused around the downcomer pipe around the downcomer pipe 141 in correspondence with the lower part of the downcomer pipe 141 communicating with a receiving container (not shown) provided in the condenser. A donut-shaped tube 151 having a hole is disposed in a horizontal state, and the donut-shaped tube 151 and the descending tube 141 are connected by a plurality of communication tubes 150.

このような構成としても、原子炉圧力容器で発生した酸素等の非凝縮性ガスを含む復水が液面へ突入するときのエネルギーを液面近傍に設けた下降管１４１から周方向に連通管１５０を通してドーナツ状の管１５１に流入した後、流出孔から液滴として噴出して分散させることができるので、前述同様に液面からのガスの随伴量を低減できる。   Even in such a configuration, the energy when condensate containing non-condensable gas such as oxygen generated in the reactor pressure vessel enters the liquid surface is communicated in the circumferential direction from the downcomer 141 provided near the liquid surface. After flowing into the doughnut-shaped tube 151 through 150, it can be ejected and dispersed as droplets from the outflow hole, so that the amount of gas accompanying the liquid surface can be reduced as described above.

上記実施の形態において、受け容器の下部に有する下降管１４１にスリット流出孔を有する多孔板を水平に取付け、このスリット流出孔から多孔板に流れた後、液面に液滴として分散させるようにしても前述同様の作用効果を得ることができる。   In the above embodiment, a perforated plate having a slit outflow hole is horizontally attached to the downcomer 141 at the bottom of the receiving container, and after flowing from the slit outflow hole to the perforated plate, it is dispersed as liquid droplets on the liquid surface. However, the same effect as described above can be obtained.

また、上記実施の形態において、受け容器の下部に有する下降管１４１の下部にサポートを介して流線形状の案内羽根を備えた円板状の底板を取付けるようにしてもよい。   Moreover, in the said embodiment, you may make it attach the disk-shaped baseplate provided with the streamline-shaped guide blade via the support to the lower part of the downcomer 141 which has the lower part of a receiving container.

このような構成としても、原子炉圧力容器で発生した酸素等の非凝縮性ガスを含む復水が液面へ突入するときのエネルギーを液面近傍に設けた下降管から案内羽根を備えた底板に流入させて液面への流れを案内羽根による遠心力により液滴流れにして分散させることができるので、前述同様に液面からのガスの随伴量を低減できる。   Even in such a configuration, the bottom plate provided with guide vanes from the downcomer provided with energy when condensate containing non-condensable gas such as oxygen generated in the reactor pressure vessel enters the liquid surface. Since the flow to the liquid surface can be dispersed as a droplet flow by the centrifugal force generated by the guide vanes, the accompanying amount of gas from the liquid surface can be reduced as described above.

本発明の第１の実施の形態における給水加熱系の循環ループの一部に設けられる低圧ドレンタンク及びその周辺部の概略構成を示す断面図。Sectional drawing which shows schematic structure of the low pressure drain tank provided in a part of circulation loop of the feed water heating system in the 1st Embodiment of this invention, and its peripheral part. 同実施の形態における低圧ドレンタンク内に導入される配管の他の構成例の説明図。Explanatory drawing of the other structural example of the piping introduce | transduced in the low pressure drain tank in the same embodiment. 本発明の第２の実施の形態における低圧ドレンタンク内に導入される配管の一部を示す断面図。Sectional drawing which shows a part of piping introduce | transduced in the low pressure drain tank in the 2nd Embodiment of this invention. 本発明の第３の実施の形態における低圧ドレンタンク内に導入される配管を示す正面図。The front view which shows the piping introduce | transduced in the low pressure drain tank in the 3rd Embodiment of this invention. 本発明の第４の実施の形態における低圧ドレンタンクに導入される配管の一部を示す構成図。The block diagram which shows a part of piping introduce | transduced into the low pressure drain tank in the 4th Embodiment of this invention. 本発明の第５の実施の形態における低圧ドレンタンクに導入される配管の一部を示す構成図。The block diagram which shows a part of piping introduce | transduced into the low pressure drain tank in the 5th Embodiment of this invention. 本発明の第６の実施の形態における低圧ドレンタンクに導入される配管の一部を示す断面図。Sectional drawing which shows a part of piping introduce | transduced into the low pressure drain tank in the 6th Embodiment of this invention. 本発明の第７の実施の形態における低圧ドレンタンクに導入される配管の一部を示す構成説明図。The structure explanatory view showing a part of piping introduced into the low-pressure drain tank in a 7th embodiment of the present invention. 本発明の第８の実施の形態における低圧ドレンタンクに導入される配管の一部を示す構成説明図。Configuration explanatory drawing which shows a part of piping introduced into the low pressure drain tank in the 8th Embodiment of this invention. 本発明の第９の実施の形態における低圧ドレンタンクに導入される配管の一部を示す構成説明図。Configuration explanatory drawing which shows a part of piping introduce | transduced into the low pressure drain tank in the 9th Embodiment of this invention. 本発明の第１０の実施の形態における低圧ドレンタンクと配管の端部との接続部を示す構成説明図。Configuration explanatory drawing which shows the connection part of the low pressure drain tank and the edge part of piping in the 10th Embodiment of this invention. 本発明の第１１の実施の形態における低圧ドレンタンクと配管の端部との接続部を示す構成説明図。The structure explanatory drawing which shows the connection part of the low pressure drain tank and the edge part of piping in the 11th Embodiment of this invention. 本発明の第１２の実施の形態における低圧ドレンタンク及びその周辺機器の構成説明図。The structure explanatory drawing of the low-pressure drain tank and its peripheral equipment in a 12th embodiment of the present invention. 本発明の第１３の実施の形態における低圧ドレンタンク及びその周辺機器の構成説明図。Configuration explanatory diagram of a low-pressure drain tank and its peripheral devices in a thirteenth embodiment of the present invention. 本発明の第１４の実施の形態における低圧ドレンタンク内に挿入された垂直配管の一部を示す構成説明図。The structure explanatory drawing which shows a part of vertical piping inserted in the low pressure drain tank in 14th Embodiment of this invention. 本発明の第１５の実施の形態における低圧ドレンタンク内に挿入された垂直配管の一部を示す構成説明図。The structure explanatory drawing which shows a part of vertical piping inserted in the low pressure drain tank in 15th Embodiment of this invention. 本発明の第１６の実施の形態における低圧ドレンタンク内に挿入された垂直配管の一部を示す構成説明図。The structure explanatory drawing which shows a part of vertical piping inserted in the low pressure drain tank in 16th Embodiment of this invention. 本発明の第１７の実施の形態における復水器及びその近傍の概略構成を示す断面図。Sectional drawing which shows schematic structure of the condenser in the 17th Embodiment of this invention, and its vicinity. 本発明の第１８の実施の形態における復水器及びその近傍の概略構成を示す断面図。Sectional drawing which shows schematic structure of the condenser in the 18th Embodiment of this invention, and its vicinity. 本発明の第１９の実施の形態における復水器及びその近傍の概略構成を示す断面図。A sectional view showing a schematic structure of a condenser and its neighborhood in a 19th embodiment of the present invention. 本発明の第２０の実施の形態における復水器内の受け容器の下部に有する下降管に接続されたドーナツ状の多孔管を示す斜視図。The perspective view which shows the doughnut-shaped porous pipe connected to the downcomer pipe which has in the lower part of the receiving container in the condenser in the 20th Embodiment of this invention. 沸騰水型原子炉の給水加熱系の循環ループの概略構成を示す系統図。The system diagram which shows schematic structure of the circulation loop of the feed water heating system of a boiling water reactor. 同じく給水加熱系において、従来の低圧ドレンタンク及びその周辺機器の構成の概要並びに給水加熱器からの凝縮水の流れを示す図。The figure which shows the outline | summary of a structure of the conventional low pressure drain tank and its peripheral device, and the flow of the condensed water from a feed water heater similarly in a feed water heating system. 同じく給水加熱系において、従来の復水器の概略を示す構成説明図。Similarly, in the feed water heating system, a configuration explanatory view showing an outline of a conventional condenser.

符号の説明Explanation of symbols

１……配管、２……端栓、３……液滴、４……流出孔、１２……先端絞り付き流出孔、１３……中間絞り付き流出孔、１４……上流絞り付き流出孔、１７……旋回噴射ノズル、１９……球状の管、２２……枝状の管、２６……じゃま板、２８……Ｌ型フィン、２９……切り欠きフィン、３０……切欠部、３４……回転散水多孔羽根、３５……外管、３６……流出孔、３８……箱形多孔板、４４……内側箱型多孔板、４５……外側箱型多孔板、４８……多孔板、４９……垂直管、５５……オリフィス、６０……切欠部、６１……切り欠き付きフィン、６８……螺旋状フィン、１０１……多孔板、１０２……流出孔、１０３……液滴、１２８……多孔板、１３９……受け容器、１４０……多孔受け皿、１４１……下降管、１５０……連通管、１５１……ドーナツ状の管、２０１……原子炉圧力容器、２０２……炉心、２０３……ポンプ、２０４……主蒸気配管、２０５……タービン、２０６……復水器、２０７……低圧復水器ポンプ、２０８……空気抽出器、２０９……オフガス処理系、２１０……排気筒、２１１……高圧復水ポンプ、２１２……低圧ドレンポンプ、２１３……低圧ドレンタンク、２１４、２１５……低圧給水加熱器、２１６……オフガス抽出器、２１７……高圧給水加熱器、２１８……給水管、２１９……気水分離器、２２０……蒸気乾燥器、２２１……給水ポンプ、２２２……衝突板、２２３……ドーナツ板、２２４……液面、２２５……ガス、２３０……蒸気流入管、２３１……冷却水供給システム、２３２……伝熱管、２３３……板 DESCRIPTION OF SYMBOLS 1 ... Piping, 2 ... End plug, 3 ... Droplet, 4 ... Outflow hole, 12 ... Outlet hole with throttle at end, 13 ... Outlet hole with intermediate throttle, 14 ... Outlet hole with upstream throttle, 17 ...... turning the injection nozzle, 19 ...... spherical tube, 22 ...... branch tube, 26 ...... baffles, 28 ...... L-type full fin, 29 ...... notch off fin, 30 ...... notch 34, rotating sprinkling perforated blade, 35 ... outer tube, 36 ... outflow hole, 38 ... box perforated plate, 44 ... inner box perforated plate, 45 ... outer box perforated plate, 48 ... ... perforated plate, 49 ...... vertical tube, 55 ...... Orifice office, 60 ...... notch, 61 ...... notch with full fin, 68 ...... spiral off fin, 101 ...... perforated plate, 102 ... ... Outflow hole, 103 ... Droplet, 128 ... Perforated plate, 139 ... Receiving container, 140 ... Perforated tray, 141 ... Downcomer, 150 ... Communication pipe, 15 …… Donut-shaped pipe 201 201 Reactor pressure vessel 202 Reactor core 203 203 Pump 204 Steam main piping 205 Turbine 206 Condenser 207 Low pressure condensate , ... Air extractor, 209 ... Off gas treatment system, 210 ... Exhaust pipe, 211 ... High pressure condensate pump, 212 ... Low pressure drain pump, 213 ... Low pressure drain tank, 214, 215 ... Low pressure feed water heater, 216 ... Off-gas extractor, 217 ... High pressure feed water heater, 218 ... Feed water pipe, 219 ... Steam separator, 220 ... Steam dryer, 221 ... Feed water pump, 222 ... Collision plate, 223 ... donut plate, 224 ... liquid level, 225 ... gas, 230 ... steam inlet pipe, 231 ... cooling water supply system, 232 ... heat transfer pipe , 233 ... plate

Claims (3)

原子炉圧力容器で発生した蒸気を主蒸気系配管を介して蒸気タービンに送給し、この蒸気タービンを駆動させた蒸気を復水器で凝縮させた後、この凝縮水を復水ポンプにより加熱器および脱気器を介して給水系統に送り、原子炉圧力容器に原子炉給水として還流させる沸騰水型原子炉において、
前記復水器は内部に冷却水システムから送られる冷水が導かれる伝熱管及びその下方に配設された板を備え、
且つ復水溜まりの液面真下に前記伝熱管により熱交換されて前記板から流下する凝縮水を受ける板面に複数の孔を有する多孔板を水平に設けたことを特徴とする沸騰水型原子炉。 The steam generated in the reactor pressure vessel is supplied to the steam turbine through the main steam system piping, and the steam that has driven this steam turbine is condensed by the condenser, and then this condensed water is heated by the condensate pump. feeding the water supply system through the vessel and deaerator, in a boiling water reactor recirculating the reactor feedwater to the reactor pressure vessel,
The condenser includes a heat transfer pipe into which cold water sent from a cooling water system is guided and a plate disposed below the heat transfer pipe.
Further, a boiling water nuclear reactor is provided with a perforated plate horizontally provided with a plurality of holes on a plate surface receiving condensed water flowing from the plate after heat exchange by the heat transfer tube just below the liquid level of the condensate reservoir. . 原子炉圧力容器で発生した蒸気を主蒸気系配管を介して蒸気タービンに送給し、この蒸気タービンを駆動させた蒸気を復水器で凝縮させた後、この凝縮水を復水ポンプにより加熱器および脱気器を介して給水系統に送り、原子炉圧力容器に原子炉給水として還流させる沸騰水型原子炉において、
前記復水器は内部に冷却水システムから送られる冷水が導かれる伝熱管及びその下方に配設された板を備え、
且つ前記板より流下する復水の落下部に受け容器を設け、その下部に有する下降管からの滝流れを受ける多孔受け皿を設けるようにしたことを特徴とする沸騰水型原子炉。 The steam generated in the reactor pressure vessel is supplied to the steam turbine through the main steam system piping, and the steam that has driven this steam turbine is condensed by the condenser, and then this condensed water is heated by the condensate pump. feeding the water supply system through the vessel and deaerator, in a boiling water reactor recirculating the reactor feedwater to the reactor pressure vessel,
The condenser includes a heat transfer pipe into which cold water sent from a cooling water system is guided and a plate disposed below the heat transfer pipe.
A boiling water reactor is provided with a receiving container in a falling portion of the condensate flowing down from the plate and a perforated receiving tray for receiving a waterfall flow from a downcomer pipe provided in the lower portion thereof. 原子炉圧力容器で発生した蒸気を主蒸気系配管を介して蒸気タービンに送給し、この蒸気タービンを駆動させた蒸気を復水器で凝縮させた後、この凝縮水を復水ポンプにより加熱器および脱気器を介して給水系統に送り、原子炉圧力容器に原子炉給水として還流させる沸騰水型原子炉において、
前記復水器は内部に冷却水システムから送られる冷水が導かれる伝熱管及びその下方に配設された板を備え、
且つ前記板より流下する復水の落下部に受け容器を設け、その下部に有する下降管の下部に対応させてこの下降管を中心に周面に多数の流出孔を有するドーナツ状の管を水平に配設すると共に、このドーナツ状の管と下降管との間を複数本の連通管により接続するようにしたことを特徴とする沸騰水型原子炉。 The steam generated in the reactor pressure vessel is supplied to the steam turbine through the main steam system piping, and the steam that has driven this steam turbine is condensed by the condenser, and then this condensed water is heated by the condensate pump. feeding the water supply system through the vessel and deaerator, in a boiling water reactor recirculating the reactor feedwater to the reactor pressure vessel,
The condenser includes a heat transfer pipe into which cold water sent from a cooling water system is guided and a plate disposed below the heat transfer pipe.
In addition, a receiving container is provided in the condensate falling part flowing down from the plate, and a donut-shaped pipe having a number of outflow holes on the peripheral surface is formed horizontally around the downcomer pipe corresponding to the lower part of the downcomer pipe provided in the lower part thereof. A boiling water reactor characterized in that the donut-shaped pipe and the downcomer pipe are connected by a plurality of communication pipes.
JP2007338335A 2007-12-27 2007-12-27 Boiling water reactor Expired - Fee Related JP4621729B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007338335A JP4621729B2 (en) 2007-12-27 2007-12-27 Boiling water reactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007338335A JP4621729B2 (en) 2007-12-27 2007-12-27 Boiling water reactor

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP33285398A Division JP4077091B2 (en) 1998-11-24 1998-11-24 Boiling water reactor

Publications (2)

Publication Number Publication Date
JP2008139017A JP2008139017A (en) 2008-06-19
JP4621729B2 true JP4621729B2 (en) 2011-01-26

Family

ID=39600660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007338335A Expired - Fee Related JP4621729B2 (en) 2007-12-27 2007-12-27 Boiling water reactor

Country Status (1)

Country Link
JP (1) JP4621729B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102269398A (en) * 2010-06-02 2011-12-07 昆山迪生环保科技有限公司 Method and device for recycling steam discharged by boiler
JP6431383B2 (en) 2015-01-16 2018-11-28 株式会社東芝 Flush box and condenser equipped with the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS496307A (en) * 1972-05-10 1974-01-21
JPS56100287A (en) * 1980-01-16 1981-08-12 Toshiba Corp Condensor
JPS5847987A (en) * 1981-09-18 1983-03-19 Mitsubishi Heavy Ind Ltd Condenser
JPS62217005A (en) * 1986-03-17 1987-09-24 株式会社東芝 Feedwater heater drain tank
JPH094415A (en) * 1995-06-19 1997-01-07 Mitsubishi Heavy Ind Ltd Steam turbine condensation system
JP3483697B2 (en) * 1996-03-25 2004-01-06 株式会社東芝 Feed water heater for boiling water reactor
JPH09273874A (en) * 1996-04-01 1997-10-21 Mitsubishi Heavy Ind Ltd Axial exhaust condenser

Also Published As

Publication number Publication date
JP2008139017A (en) 2008-06-19

Similar Documents

Publication Publication Date Title
RU2383816C1 (en) Steam-water separator
CN201458784U (en) Built-in deaerization plant
EA026272B1 (en) Nuclear reactor with liquid metal coolant
ES2541331B2 (en) Steam separator and nuclear boiling water reactor that includes the same
JP4621729B2 (en) Boiling water reactor
JP4077091B2 (en) Boiling water reactor
US20120247727A1 (en) Steam generator tube lane flow buffer
JP2009519127A (en) Extraction device
JPH0727053B2 (en) A steam-water separation system for boiling water reactors.
EP0493900A1 (en) Steam dryer
US4158387A (en) Blowdown apparatus
SE458730B (en) FEED WATER DISTRIBUTOR FOR COOK WATER REACTOR
CN205137415U (en) Fire power boiler's steam pocket structure
JP2849083B2 (en) Integrated deaerator for heat pipe steam condenser
CN210861052U (en) Thermal deaerator
CN113035388A (en) Simple and efficient PCS long-term cooling water tank
JPH04231897A (en) Boiling water reactor whose steam separating system is improved
CN220322090U (en) Steam drainage collection device
JP3964587B2 (en) Reactor steam separator
CN208187159U (en) A kind of rainwater-collecting multilayer drip-type cooling tower
CN212057241U (en) Thermal power generating unit deoxidization-free thermodynamic system
CN209433886U (en) Used in nuclear power station condenser with liquid storage functions/drying
JP2003156202A (en) Feed water heater
CN210698814U (en) Automatic high-efficient MVR evaporation concentrator
JP3483697B2 (en) Feed water heater for boiling water reactor

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100319

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100420

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100618

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20101005

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20101101

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131105

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131105

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees