JPH10300014A - Water supplying device for steam generator - Google Patents
Water supplying device for steam generatorInfo
- Publication number
- JPH10300014A JPH10300014A JP12316497A JP12316497A JPH10300014A JP H10300014 A JPH10300014 A JP H10300014A JP 12316497 A JP12316497 A JP 12316497A JP 12316497 A JP12316497 A JP 12316497A JP H10300014 A JPH10300014 A JP H10300014A
- Authority
- JP
- Japan
- Prior art keywords
- water supply
- water
- steam generator
- pump
- initial
- 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.)
- Pending
Links
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、蒸気発生器の給
水装置に関するものである。The present invention relates to a water supply device for a steam generator.
【０００２】[0002]
【従来の技術】通常、蒸気発生器においては、運転開始
時に、蒸気発生器内の所定の水位まで給水を行う（以
下、初期給水という）。この後、適宜の加熱手段により
蒸気発生器内の給水を加熱し、蒸気を発生させる。そし
て、この蒸気発生器の運転中においては、給水の消費量
（すなわち、蒸気の発生量）に応じて給水を行う。2. Description of the Related Art Generally, in a steam generator, water is supplied to a predetermined water level in the steam generator at the start of operation (hereinafter referred to as initial water supply). Thereafter, the water supply in the steam generator is heated by a suitable heating means to generate steam. During the operation of the steam generator, the water supply is performed according to the consumption amount of the supply water (that is, the amount of generated steam).
【０００３】ところで、前記初期給水時には、蒸気発生
器内の圧力が低いため、揚程の低い給水ポンプを利用で
きるが、この初期給水を短時間で終了するためには、吐
出量の大きいものが好ましい。一方、蒸気発生器の運転
中に給水を行う場合、給水の消費量に応じた給水を行え
ばよいため、給水ポンプの吐出量は少なくてよいが、蒸
気発生器内の圧力に打ち勝って蒸気発生器内に給水する
必要があるため、揚程の高いものが必要である。このよ
うに、運転開始前の初期給水時と運転中の給水時とで
は、要求される状態が異なっているにも関わらず、給水
ポンプとしては、高揚程で大吐出量の給水ポンプを用い
ている。このような給水ポンプは、大型で高価である。[0003] By the way, at the time of the initial water supply, since the pressure in the steam generator is low, a water pump with a low head can be used. However, in order to complete the initial water supply in a short time, a pump having a large discharge amount is preferable. . On the other hand, when water is supplied during the operation of the steam generator, the water supply may be performed in accordance with the consumption of the water supply.Therefore, the discharge amount of the water supply pump may be small, but the steam generated by overcoming the pressure in the steam generator. Since it is necessary to supply water to the inside of the vessel, a pump with a high head is required. Thus, although the required state is different between the initial water supply before the operation start and the water supply during the operation, a water supply pump with a high head and a large discharge rate is used as the water supply pump. I have. Such feed pumps are large and expensive.
【０００４】[0004]
【発明が解決しようとする課題】この発明が解決しよう
とする課題は、蒸気発生器の給水装置において、給水ポ
ンプの小容量化と初期給水時の給水時間の短縮を図るこ
とである。SUMMARY OF THE INVENTION An object of the present invention is to reduce the capacity of a water supply pump and shorten the water supply time during initial water supply in a water supply device for a steam generator.
【０００５】[0005]
【課題を解決するための手段】この発明は、前述の課題
を解決するためになされたもので、請求項１に記載の発
明は、蒸気発生器に、第一給水路と、給水ポンプを備え
た第二給水路とを接続し、前記第一給水路と第二給水路
の少なくとも一方を選択して給水するようにしたことを
特徴としており、請求項２に記載の発明は、前記第一給
水路が、弁装置を備えていることを特徴としており、請
求項３に記載の発明は、前記第一給水路の上流側に、前
記蒸気発生器との間に水頭圧差を設けて、給水タンクを
接続したことを特徴としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 includes a steam generator having a first water supply passage and a water supply pump. The second water supply channel is connected, and at least one of the first water supply channel and the second water supply channel is selected to supply water, the invention according to claim 2, wherein the first water supply channel The water supply passage is provided with a valve device, and the invention according to claim 3 provides a head pressure difference between the steam supply and the upstream side of the first water supply passage to supply water. It is characterized by connecting a tank.
【０００６】さらに、請求項４に記載の発明は、蒸気発
生器に、低揚程で大吐出量の第一給水ポンプを備えた第
一給水路と、高揚程で小吐出量の第二給水ポンプを備え
た第二給水路とを接続し、前記第一給水路と第二給水路
の少なくとも一方を選択して給水するようにしたことを
特徴としている。Further, according to the present invention, the steam generator is provided with a first water supply passage provided with a first water supply pump having a low head and a large discharge amount, and a second water supply pump having a high discharge amount and a small discharge amount. And a second water supply passage provided with a water supply passage, and at least one of the first water supply passage and the second water supply passage is selected to supply water.
【０００７】[0007]
【発明の実施の形態】この発明は、蒸気発生器の給水装
置として実施される。とくに、この発明の請求項１乃至
請求項３に記載の発明は、比較的低い圧力の蒸気を発生
する蒸気発生器の給水装置に適用すると好適である。こ
のような蒸気発生器としては、蒸気滅菌器用の蒸気発生
器が代表的である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is embodied as a water supply device for a steam generator. In particular, the inventions described in claims 1 to 3 of the present invention are preferably applied to a water supply device of a steam generator that generates steam at a relatively low pressure. A typical example of such a steam generator is a steam generator for a steam sterilizer.
【０００８】この発明は、蒸気発生器に、第一給水路
と、給水ポンプを備えた第二給水路とを接続し、前記第
一給水路と第二給水路の少なくとも一方を選択して給水
するようにしたものである。この構成により、初期給水
時には、少なくとも第一給水路から給水を行い、蒸気発
生器の運転時には、給水ポンプを作動させて、給水を加
圧しながら第二給水路から給水を行う。According to the present invention, a first water supply path and a second water supply path having a water supply pump are connected to a steam generator, and at least one of the first water supply path and the second water supply path is selected to supply water. It is something to do. With this configuration, at the time of initial water supply, water is supplied from at least the first water supply path, and at the time of operation of the steam generator, the water supply pump is operated to supply water from the second water supply path while pressurizing the water supply.
【０００９】このように、蒸気発生器内の圧力状況に応
じて第一給水路と第二給水路の少なくとも一方から給水
を行うことにより、前記給水ポンプを蒸気発生器の給水
の消費量に対応させた小吐出量のポンプとすることがで
き、給水ポンプの小型化を達成する。また、初期給水時
には、第一給水路から給水の元圧でもって給水するた
め、前記給水ポンプの吐出量が小さくても短時間で給水
を終了することができる。さらに、初期給水時におい
て、前記給水ポンプを作動させ、第一給水路と第二給水
路とから同時に給水を行うようにすると、給水時間の一
層の短縮を行うことができる。As described above, by supplying water from at least one of the first water supply passage and the second water supply passage according to the pressure condition in the steam generator, the water supply pump can handle the water consumption of the steam generator. It is possible to make a pump with a small discharge amount, thereby achieving the downsizing of the water supply pump. In addition, at the time of initial water supply, water is supplied from the first water supply path at the original pressure of water supply, so that water supply can be completed in a short time even if the discharge amount of the water supply pump is small. Further, at the time of initial water supply, if the water supply pump is operated to simultaneously supply water from the first water supply passage and the second water supply passage, the water supply time can be further reduced.
【００１０】ここで、前記第一給水路と第二給水路とを
蒸気発生器に接続する形態は、前記第一給水路と第二給
水路とを前記蒸気発生器に対して独立して接続する形態
のほか、前記第一給水路と第二給水路とを一旦合流させ
た後、前記蒸気発生器に接続する形態も含む。このよう
に第一給水路と第二給水路とを一旦合流させた後、蒸気
発生器に接続する場合には、この合流部に流路切り替え
弁を取り付けることにより、前記第一給水路と第二給水
路との選択を行うことができる。Here, the form in which the first water supply passage and the second water supply passage are connected to a steam generator is such that the first water supply passage and the second water supply passage are independently connected to the steam generator. In addition to the embodiment, the first water supply passage and the second water supply passage are merged once, and then connected to the steam generator. When the first water supply path and the second water supply path are once merged in this way, when connecting to the steam generator, by attaching a flow path switching valve to this junction, the first water supply path and the second water supply path are combined. A choice between two waterways can be made.
【００１１】さらに、この発明では、前記第一給水路に
弁装置を設けるのが好適である。この弁装置としては、
開閉弁や逆止弁などである。この弁装置として開閉弁を
用いる場合には、初期給水時に、この開閉弁を開閉する
ことにより、蒸気発生器への給水を積極的に制御するこ
とができ、また、蒸気発生器の運転時にこの開閉弁を閉
じることにより、蒸気発生器からの給水の逆流を防止す
ることができる。また、前述の給水の逆流を防止する場
合には、逆止弁を用いることができる。この弁装置とし
ては、前述の開閉弁や逆止弁をそれぞれ単独で用いるほ
か、組み合わせて用いることもできる。Further, in the present invention, it is preferable to provide a valve device in the first water supply passage. As this valve device,
Open / close valve and check valve. When an on-off valve is used as this valve device, the water supply to the steam generator can be positively controlled by opening and closing this on-off valve at the time of initial water supply. By closing the on-off valve, the backflow of the water supply from the steam generator can be prevented. In order to prevent the above-mentioned backflow of the water supply, a check valve can be used. As this valve device, the above-mentioned on-off valve and check valve can be used alone or in combination.
【００１２】さらに、この発明は、前記第一給水路の上
流側に、前記蒸気発生器との間に水頭圧差を設けて、給
水タンクを接続したものである。この構成により、初期
給水時には、前記蒸気発生器と給水タンクの水頭圧差に
よって第一給水路から蒸気発生器内に給水することがで
きる。Further, in the present invention, a water head pressure difference is provided between the steam generator and an upstream side of the first water supply passage, and a water supply tank is connected. With this configuration, at the time of initial water supply, water can be supplied into the steam generator from the first water supply passage by a head pressure difference between the steam generator and the water supply tank.
【００１３】さらに、この発明は、蒸気発生器に、低揚
程で大吐出量の第一給水ポンプを備えた第一給水路と、
高揚程で小吐出量の第二給水ポンプを備えた第二給水路
とを接続し、前記第一給水路と第二給水路の少なくとも
一方を選択して給水するようにしたものである。この構
成により、蒸気発生器内の圧力の低い初期給水時には、
低揚程で大吐出量の第一給水ポンプを作動させ、第一給
水路から給水を行うことにより、この初期給水を短時間
で終了させる。そして、蒸気発生器内の圧力の高い運転
時には、高揚程で小吐出量の第二給水ポンプを作動さ
せ、給水を加圧しながら第二給水路から給水を行う。ま
た、この場合も、初期給水時に第二給水ポンプと第二給
水ポンプを同時に作動させ、第一給水路と第二給水路と
から同時に給水を行うようにすると、給水時間の一層の
短縮を行うことができる。Further, the present invention provides a first water supply passage provided with a first water supply pump having a low head and a large discharge amount in a steam generator,
A second water supply passage provided with a second head water supply pump having a small discharge amount at a high head is connected, and at least one of the first water supply passage and the second water supply passage is selected to supply water. With this configuration, during initial water supply with low pressure in the steam generator,
The initial water supply is completed in a short time by operating the first water supply pump having a large discharge amount at a low head and supplying water from the first water supply passage. Then, when the pressure in the steam generator is high, the second feedwater pump with a high discharge and a small discharge amount is operated to supply water from the second water supply passage while pressurizing the feedwater. Also in this case, when the second water supply pump and the second water supply pump are simultaneously operated at the time of initial water supply and water is simultaneously supplied from the first water supply path and the second water supply path, the water supply time is further reduced. be able to.
【００１４】このように、蒸気発生器内の圧力状況に応
じて第一給水路と第二給水路の少なくとも一方を選択し
て給水する構成とすることにより、蒸気発生器の状況に
応じた適切な給水を行うことができる。したがって、こ
の発明によれば、第一給水ポンプおよび第二給水ポンプ
には、それぞれその使用状況に応じた適切な給水ポンプ
を選定することができるため、結果として給水装置の小
型化および低コスト化を達成する。As described above, by selecting at least one of the first water supply passage and the second water supply passage in accordance with the pressure condition in the steam generator to supply water, an appropriate water supply condition corresponding to the condition of the steam generator is provided. Water can be supplied. Therefore, according to the present invention, an appropriate water supply pump can be selected for each of the first water supply pump and the second water supply pump according to the usage thereof, and as a result, the water supply device can be reduced in size and cost To achieve.
【００１５】[0015]
【実施例】以下、この発明の具体的実施例について、詳
細に説明する。まず、この発明の第一実施例について、
図１を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail. First, regarding the first embodiment of the present invention,
This will be described with reference to FIG.
【００１６】図１において、蒸気発生器１は、内部に加
熱手段２を備える。前記加熱手段２は、この第一実施例
では、電気ヒータである。この蒸気発生器１には、第一
給水路３と第二給水路４を接続してある。そして、前記
第一給水路３には、開閉弁５を接続してあり、前記第二
給水路４には給水ポンプ６を接続してある。さらに、こ
の第一給水路３の前記開閉弁５の上流側は、第二給水路
４の給水ポンプ６の上流側と合流させた後、給水源７に
接続してある。また、前記第一給水路３の開閉弁５の下
流側は、第二給水路４の給水ポンプ６の下流側と合流さ
せた後、前記蒸気発生器１に接続してある。したがっ
て、前記開閉弁５と給水ポンプ６とは並列になってい
る。さらに、第二給水路４における前記開閉弁５の下流
側には、蒸気発生器１からの逆流を防止するための逆止
弁８を接続してある。In FIG. 1, the steam generator 1 has a heating means 2 inside. The heating means 2 is an electric heater in the first embodiment. A first water supply channel 3 and a second water supply channel 4 are connected to the steam generator 1. An open / close valve 5 is connected to the first water supply passage 3, and a water supply pump 6 is connected to the second water supply passage 4. Further, the upstream side of the on-off valve 5 of the first water supply passage 3 is connected to the water supply source 7 after being merged with the upstream side of the water supply pump 6 of the second water supply passage 4. Further, the downstream side of the on-off valve 5 of the first water supply passage 3 is connected to the steam generator 1 after being merged with the downstream side of the water supply pump 6 of the second water supply passage 4. Therefore, the on-off valve 5 and the water supply pump 6 are in parallel. Further, a check valve 8 for preventing backflow from the steam generator 1 is connected to the second water supply passage 4 downstream of the on-off valve 5.
【００１７】この第一実施例において、前記開閉弁５
は、電磁弁や電動弁などのように流路を開閉する制御弁
である。また、前記給水ポンプ６は、ダイアフラムポン
プやプランジャポンプなどのように吐出量が小さいが揚
程の大きいものである。In the first embodiment, the on-off valve 5
Is a control valve that opens and closes a flow path, such as a solenoid valve or an electric valve. The water supply pump 6 has a small discharge amount but a large head like a diaphragm pump or a plunger pump.
【００１８】さらに、前記蒸気発生器１には、適宜の水
位制御手段（図示省略）を設けてあって、前記初期給水
時の水位や、運転中の水位が適切な範囲に収まるよう
に、前記開閉弁５および給水ポンプ６を制御する。ま
た、前記蒸気発生器１には、蒸気供給配管９とブロー配
管１０を接続してある。この蒸気供給配管９は、蒸気使
用機器（図示省略）に接続されている。前記ブロー配管
１０は、蒸気発生器１内の給水が濃縮した場合などに蒸
気発生器１内の給水を排出するものである。Further, the steam generator 1 is provided with an appropriate water level control means (not shown) so that the water level at the time of the initial water supply and the water level during operation fall within an appropriate range. The on-off valve 5 and the water supply pump 6 are controlled. Further, a steam supply pipe 9 and a blow pipe 10 are connected to the steam generator 1. The steam supply pipe 9 is connected to a steam-using device (not shown). The blow pipe 10 discharges the feedwater in the steam generator 1 when the feedwater in the steam generator 1 is concentrated.
【００１９】以上の構成において、前記蒸気発生器１の
使用開始時には、前述の初期給水を行うが、この初期給
水は、前記給水ポンプ６を停止した状態で前記開閉弁５
を開とすることによって行う。この際には、前記蒸気発
生器１内はほぼ大気圧となっているので、給水はその元
圧でもって、前記第一給水路３から蒸気発生器１内に流
入する。そして、蒸気発生器１内の所定水位まで給水が
行われると、前記開閉弁５を閉鎖する。In the above configuration, when the steam generator 1 is started to be used, the above-mentioned initial water supply is performed. This initial water supply is performed while the water supply pump 6 is stopped.
Is performed by opening. At this time, since the inside of the steam generator 1 is almost at atmospheric pressure, the feedwater flows into the steam generator 1 from the first water supply passage 3 at the original pressure. When the water is supplied to a predetermined water level in the steam generator 1, the on-off valve 5 is closed.
【００２０】つぎに、この状態で、前記加熱手段２を作
動させ、蒸気を発生させる。この蒸気は、所定の圧力で
もって蒸気使用機器に供給されるため、この圧力まで蒸
気発生器１内の圧力は高くなる。そして、この蒸気を前
記蒸気使用機器に供給するにつれて、蒸気発生器１内の
給水が消費される。そこで、前記給水ポンプ６を作動さ
せて、この消費された分の給水を補充する。Next, in this state, the heating means 2 is operated to generate steam. Since the steam is supplied to the steam-using equipment at a predetermined pressure, the pressure in the steam generator 1 increases to this pressure. Then, as this steam is supplied to the steam-using device, the feedwater in the steam generator 1 is consumed. Therefore, the water supply pump 6 is operated to replenish the consumed water.
【００２１】以上のように、この発明の給水装置は、蒸
気発生器１内の圧力の低い初期給水時には、開閉弁５を
開くことにより、給水の元圧を利用して第一給水路３か
ら給水を行い、蒸気発生器１内の圧力の高い運転時に
は、給水ポンプ６を作動させて第二給水路４から給水を
行う。したがって、給水ポンプ６は、蒸気発生器１の運
転時に作動させればよいから、小吐出量の小型のものを
用いることができる。また、初期給水時には、蒸気発生
器１の圧力がほぼ大気圧であるため、給水を元圧を利用
して行うことにより、給水ポンプ６の吐出量が少なくて
も短時間で給水を終了することができる。さらに、この
初期給水時において、前記給水ポンプ６を作動させ、第
一給水路３と第二給水路４とから同時に給水を行うこと
により、給水時間の一層の短縮を行うことができる。As described above, in the water supply apparatus of the present invention, at the time of the initial water supply with a low pressure in the steam generator 1, the on-off valve 5 is opened to utilize the original pressure of the water supply from the first water supply passage 3. When the water is supplied and the steam generator 1 operates at a high pressure, the water supply pump 6 is operated to supply water from the second water supply passage 4. Therefore, the water supply pump 6 may be operated during the operation of the steam generator 1, so that a small pump having a small discharge amount can be used. Further, at the time of initial water supply, since the pressure of the steam generator 1 is almost atmospheric pressure, water supply is performed using the original pressure, so that water supply can be completed in a short time even if the discharge amount of the water supply pump 6 is small. Can be. Further, at the time of the initial water supply, the water supply pump 6 is operated to simultaneously supply water from the first water supply passage 3 and the second water supply passage 4, so that the water supply time can be further reduced.
【００２２】つぎに、この発明の第二実施例について図
２を参照しながら説明する。ここで、第二実施例の説明
では、前記第一実施例と同様の構成部材には、同一の参
照番号を附してその詳細説明を省略する。図２におい
て、前記第一給水路３の上流側には、給水タンク１１を
接続してある。この給水タンク１１は、前記蒸気発生器
１よりも上方に配置し、蒸気発生器１との間に水頭圧差
を設けてある。この給水タンク１１は、常時一定の水位
を保つように、他の給水源（図示省略）から給水され
る。したがって、この第二実施例においては、初期給水
時に前記開閉弁５を開けることにより、前述の水頭圧差
を利用して蒸気発生器１内に給水できる。Next, a second embodiment of the present invention will be described with reference to FIG. Here, in the description of the second embodiment, the same reference numerals are given to the same components as those in the first embodiment, and the detailed description thereof will be omitted. In FIG. 2, a water supply tank 11 is connected to an upstream side of the first water supply passage 3. The water supply tank 11 is arranged above the steam generator 1, and a head pressure difference is provided between the water supply tank 11 and the steam generator 1. The water supply tank 11 is supplied with water from another water supply source (not shown) so as to always maintain a constant water level. Therefore, in the second embodiment, by opening the on-off valve 5 at the time of initial water supply, water can be supplied into the steam generator 1 by utilizing the above-mentioned water head pressure difference.
【００２３】さらに、この第二実施例において、前記給
水タンク１１内の水位を、初期給水時の蒸気発生器１内
の水位と一致させておくと、初期給水時に開閉弁５を開
くことにより、蒸気発生器１側で水位を検出すること無
く、所定の水位まで給水を行うことができる。この場
合、前記開閉弁５は、初期給水が確実に終了し得る時間
が経過してから、閉じるように制御する。Further, in the second embodiment, if the water level in the water supply tank 11 is made to coincide with the water level in the steam generator 1 at the time of initial water supply, the on-off valve 5 is opened at the time of initial water supply. Water can be supplied to a predetermined water level without detecting the water level on the steam generator 1 side. In this case, the on-off valve 5 is controlled to close after a lapse of time during which the initial supply of water can be surely completed.
【００２４】つぎに、この発明の第三実施例について、
図３を参照しながら説明する。ここで、第三実施例の説
明では、前記第一実施例および第二実施例と同様の構成
部材には、同一の参照番号を附してその詳細説明を省略
する。この第三実施例は、蒸気発生器１に、低揚程で大
吐出量の第一給水ポンプ１２を備えた第一給水路３と、
高揚程で小吐出量の第二給水ポンプ１３を備えた第二給
水路４とを並列に接続したものである。この構成によ
り、蒸気発生器１内の圧力の低い初期給水時には、低揚
程で大吐出量の第一給水ポンプ１２を作動させ、第一給
水路３から給水を行うことにより、この初期給水を短時
間で終了させる。そして、蒸気発生器１内の圧力の高い
運転時には、高揚程で小吐出量の第二給水ポンプ１３を
作動させ、給水を加圧しながら第二給水路４から給水を
行う。このように、蒸気発生器１内の圧力状況に応じて
第一給水路３と第二給水路４とを切り換えて使用するこ
とにより、それぞれ状況に応じて適切な給水ポンプを選
択することができる。さらに、この初期給水時に、前記
第一給水ポンプ１２と第二給水ポンプ１３とをともに作
動させ、第一給水路３と第二給水路４とから同時に給水
を行うことにより、給水時間の一層の短縮を行うことが
できることはいうまでもない。Next, a third embodiment of the present invention will be described.
This will be described with reference to FIG. Here, in the description of the third embodiment, the same reference numerals are given to the same components as those in the first embodiment and the second embodiment, and the detailed description thereof will be omitted. In the third embodiment, the steam generator 1 includes a first water supply passage 3 having a first water supply pump 12 having a low head and a large discharge amount;
The second water supply path 4 having a high water discharge and a small discharge amount of the second water supply pump 13 is connected in parallel. With this configuration, at the time of initial water supply with a low pressure in the steam generator 1, the first water supply pump 12 having a low head and a large discharge amount is operated to supply water from the first water supply passage 3, thereby shortening the initial water supply. End in time. When the pressure in the steam generator 1 is high, the second water supply pump 13 with a high head and a small discharge amount is operated to supply water from the second water supply passage 4 while pressurizing the water supply. In this way, by switching and using the first water supply passage 3 and the second water supply passage 4 according to the pressure condition in the steam generator 1, an appropriate water supply pump can be selected according to each condition. . Further, at the time of the initial water supply, the first water supply pump 12 and the second water supply pump 13 are both operated to simultaneously supply water from the first water supply passage 3 and the second water supply passage 4, thereby further increasing the water supply time. It goes without saying that shortening can be performed.
【００２５】[0025]
【発明の効果】以上説明したように、この発明の蒸気発
生器の給水装置によれば、初期給水時には少なくとも第
一給水路から給水を行い、蒸気発生器の運転時には、給
水ポンプによって給水を加圧しながら第二給水路から給
水を行うことにより、給水ポンプの小容量化と初期給水
時の給水時間の短縮を図ることができる。As described above, according to the steam generator water supply apparatus of the present invention, water is supplied from at least the first water supply channel at the time of initial water supply, and water is supplied by the water supply pump during operation of the steam generator. By supplying water from the second water supply passage while pressing, it is possible to reduce the capacity of the water supply pump and to shorten the water supply time at the time of initial water supply.
【００２６】さらに、この発明の蒸気発生器の給水装置
によれば、前記第一給水路の上流側に、前記蒸気発生器
との間に水頭圧差を設けて給水タンクを接続してあるた
め、初期給水時には、この水頭圧差でもって蒸気発生器
に確実に給水を行うことができる。Further, according to the water supply apparatus for a steam generator of the present invention, a water head pressure difference is provided between the upstream side of the first water supply passage and the steam generator to connect the water supply tank. At the time of initial water supply, it is possible to reliably supply water to the steam generator by using the head pressure difference.
【００２７】さらに、この発明の蒸気発生器の給水装置
によれば、蒸気発生器内の圧力の低い初期給水時には、
低揚程で大吐出量の第一給水ポンプを作動させ、第一給
水路から給水を行うことにより、この初期給水を短時間
で終了させることができ、蒸気発生器内の圧力の高い運
転時には、高揚程で小吐出量の第二給水ポンプを作動さ
せ、給水を加圧しながら第二給水路から給水を行うこと
ができるため、蒸気発生器の状況に応じた適切な給水を
行うことができる。したがって、第一給水ポンプおよび
第二給水ポンプには、それぞれその使用状況に応じた適
切な給水ポンプを選定することができるため、結果とし
て給水装置の小型化および低コスト化を達成することが
できる。Further, according to the water supply apparatus for a steam generator of the present invention, at the time of initial water supply at a low pressure in the steam generator,
By operating the first feed pump with a large discharge amount at a low head and supplying water from the first water supply passage, this initial water supply can be completed in a short time, and during operation with high pressure in the steam generator, Since the second water supply pump with a small discharge amount can be operated at a high head to supply water from the second water supply passage while pressurizing the water supply, it is possible to perform appropriate water supply according to the situation of the steam generator. Therefore, since a suitable water supply pump can be selected for the first water supply pump and the second water supply pump according to the usage thereof, the water supply apparatus can be reduced in size and cost. .
【図１】この発明の第一実施例の説明図である。FIG. 1 is an explanatory diagram of a first embodiment of the present invention.
【図２】この発明の第二実施例の説明図である。FIG. 2 is an explanatory diagram of a second embodiment of the present invention.
【図３】この発明の第三実施例の説明図である。FIG. 3 is an explanatory diagram of a third embodiment of the present invention.
１ 蒸気発生器 ３ 第一給水路 ４ 第二給水路 ５ 開閉弁 ６ 給水ポンプ １１ 給水タンク １２ 第一給水ポンプ １３ 第二給水ポンプ DESCRIPTION OF SYMBOLS 1 Steam generator 3 First water supply path 4 Second water supply path 5 On-off valve 6 Water supply pump 11 Water supply tank 12 First water supply pump 13 Second water supply pump
Claims (4)
ポンプ６を備えた第二給水路４とを接続し、前記第一給
水路３と第二給水路４の少なくとも一方を選択して給水
するようにしたことを特徴とする蒸気発生器の給水装
置。1. A first water supply passage 3 and a second water supply passage 4 provided with a water supply pump 6 are connected to the steam generator 1, and at least one of the first water supply passage 3 and the second water supply passage 4 is connected to the steam generator 1. A water supply device for a steam generator, wherein water is selectively supplied.
えていることを特徴とする請求項１に記載の蒸気発生器
の給水装置。2. The water supply device for a steam generator according to claim 1, wherein the first water supply passage 3 includes valve devices 5 and 8.
発生器１との間に水頭圧差を設けて、給水タンク１１を
接続したことを特徴とする請求項１または請求項２に記
載の蒸気発生器の給水装置。3. The water supply tank 11 is connected upstream of the first water supply passage 3 with a head pressure difference between the first water supply passage 3 and the steam generator 1. A water supply device for the steam generator as described.
一給水ポンプ１２を備えた第一給水路３と、高揚程で小
吐出量の第二給水ポンプ１３を備えた第二給水路４とを
接続し、前記第一給水路３と第二給水路４の少なくとも
一方を選択して給水するようにしたことを特徴とする蒸
気発生器の給水装置。4. A steam generator 1 having a first water supply passage 3 having a low head and a large discharge amount of a first water supply pump 12, and a second water supply having a high head and a small discharge amount of a second water supply pump 13. A water supply apparatus for a steam generator, wherein the water supply path is connected to at least one of the first water supply path 3 and the second water supply path 4 to supply water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12316497A JPH10300014A (en) | 1997-04-25 | 1997-04-25 | Water supplying device for steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12316497A JPH10300014A (en) | 1997-04-25 | 1997-04-25 | Water supplying device for steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10300014A true JPH10300014A (en) | 1998-11-13 |
Family
ID=14853776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12316497A Pending JPH10300014A (en) | 1997-04-25 | 1997-04-25 | Water supplying device for steam generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10300014A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102629382B1 (en) * | 2023-05-02 | 2024-01-25 | 주식회사 대열보일러 | Low-Nox Boiler system for preventing overheating of boiler tubes |
-
1997
- 1997-04-25 JP JP12316497A patent/JPH10300014A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102629382B1 (en) * | 2023-05-02 | 2024-01-25 | 주식회사 대열보일러 | Low-Nox Boiler system for preventing overheating of boiler tubes |
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