JP2000005644A - Injection nozzle - Google Patents
Injection nozzleInfo
- Publication number
- JP2000005644A JP2000005644A JP10173296A JP17329698A JP2000005644A JP 2000005644 A JP2000005644 A JP 2000005644A JP 10173296 A JP10173296 A JP 10173296A JP 17329698 A JP17329698 A JP 17329698A JP 2000005644 A JP2000005644 A JP 2000005644A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- spring
- injection nozzle
- damping force
- present
- 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.)
- Withdrawn
Links
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、火力発電プラント
の給水系統に設けられた脱気器等に用いられる噴射ノズ
ルに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection nozzle used for a deaerator provided in a water supply system of a thermal power plant.
【０００２】[0002]
【従来の技術】火力発電プラント等において、蒸気ター
ビンの排気を復水し、ボイラに給水する給水系統には脱
気器が配設されている。2. Description of the Related Art In a thermal power plant or the like, a deaerator is provided in a water supply system for condensing exhaust gas from a steam turbine and supplying water to a boiler.
【０００３】脱気器は、タービンの抽気やその他の蒸気
によって給水を予熱すると共に、給水中の溶存ガスを分
離除去する役割を負ったものであり、種々の形式のもの
が有るが、一例としてスプレー式脱気器について見る
と、多数の噴射ノズルを設け、同噴射ノズルから給水を
噴射して微粒化し、これを前記蒸気と接触させて前記溶
存ガスの分離除去を促進するように構成されている。The deaerator plays a role of preheating the feed water by bleeding air from the turbine or other steam and separating and removing dissolved gas in the feed water. There are various types of deaerators. Looking at the spray-type deaerator, a number of injection nozzles are provided, the supply water is injected from the injection nozzles to atomize the water, and this is brought into contact with the steam to promote separation and removal of the dissolved gas. I have.
【０００４】従ってこの脱気器に採用される噴射ノズル
は、脱気器の性能を左右する重要な部位であり、給水の
微粒化機能に優れること、作動の安定性が確保されてい
ること、また、長期間に亘っての使用に耐えられること
等、種々の要求がなされるものである。[0004] Therefore, the injection nozzle employed in this deaerator is an important part that affects the performance of the deaerator, and is excellent in the function of atomizing the water supply, ensuring that the operation is stable, In addition, various demands are made, such as being able to withstand long-term use.
【０００５】この様な噴射ノズルの、従来使用に供され
ているものの一例を図６に基づいて説明する。１は弁
座、２は弁で、弁２は弁座１に接合して流路を閉塞し、
また、弁座１と離脱して流路を開通する。[0005] An example of such an injection nozzle which has been conventionally used will be described with reference to FIG. 1 is a valve seat, 2 is a valve, and valve 2 is joined to the valve seat 1 to block the flow path,
Further, it separates from the valve seat 1 to open the flow passage.
【０００６】２１は弁棒で、前記弁２と弁座１との閉塞
面に対して鉛直に伸びており、弁２と一体となって弁本
体を構成している。また、弁棒２１には一対のバネ受け
３、３が遊嵌され、同バネ受け３、３の間には弁棒２１
を軸としてバネ５が介在している。Reference numeral 21 denotes a valve stem, which extends vertically with respect to the closing surface between the valve 2 and the valve seat 1, and forms a valve body integrally with the valve 2. A pair of spring receivers 3 are loosely fitted to the valve stem 21, and the valve stem 21 is located between the spring receivers 3.
, And a spring 5 is interposed.
【０００７】弁２と離れた側のバネ受け３はナット４で
支持され、同ナット４は割ピン６により弁棒２１に固定
している。The spring receiver 3 remote from the valve 2 is supported by a nut 4, which is fixed to a valve rod 21 by a split pin 6.
【０００８】そして上流側（図で左側）からボイラ給水
等の流体が供給されると、弁座１の通路１ａを通過した
流体に押され、弁２はバネ５の圧縮力に抗して弁座１と
離脱する方向（図で右側）に押されて流路を開通し、他
方、この流体の量が少なくなるとバネ５の復元力で戻さ
れて弁座１に着座し、流路を閉塞するように作動して噴
射ノズルを構成している。When fluid such as boiler feed water is supplied from the upstream side (left side in the figure), the fluid is pushed by the fluid passing through the passage 1a of the valve seat 1, and the valve 2 is pressed against the compressive force of the spring 5. Pushed in the direction to separate from the seat 1 (right side in the figure) to open the flow passage, on the other hand, when the amount of this fluid decreases, it is returned by the restoring force of the spring 5 and seats on the valve seat 1 to close the flow passage. To form the injection nozzle.
【０００９】[0009]
【発明が解決しようとする課題】前記のようなに構成さ
れた従来の噴射ノズルでは、弁座１と弁２の嵌合部は弁
２の開放に従ってすき間が大きくなるため、弁２が軸方
向に運動するとき、この運動の減衰力が小さく、噴射室
容積、噴射量等の条件によっては弁２に自励振動が発生
するという不具合を伴うものであった。In the conventional injection nozzle configured as described above, the clearance between the fitting portion of the valve seat 1 and the valve 2 becomes larger as the valve 2 is opened. , The damping force of this movement is small, and the self-excited vibration occurs in the valve 2 depending on the conditions such as the volume of the injection chamber and the injection amount.
【００１０】本発明は従来のものにおけるこの様な不具
合を解消し、弁の軸方向の運動に対する減衰力を増大さ
せ、弁の自励振動発生を防止した噴射ノズルを提供する
ことを課題とするものである。An object of the present invention is to provide an injection nozzle which solves such problems in the prior art, increases the damping force with respect to the axial movement of the valve, and prevents the occurrence of self-excited vibration of the valve. Things.
【００１１】[0011]
【課題を解決するための手段】本発明は、前記した課題
を解決すべくなされたもので、弁の開閉動作復元力を付
与するバネ部材と、弁の軸方向運動減衰力を付与する手
段を備えた弁本体を有してなる噴射ノズルを提供するも
のである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and comprises a spring member for providing a restoring force for opening and closing a valve, and a means for providing a damping force for axial movement of the valve. The present invention provides an injection nozzle having a valve body provided with the nozzle.
【００１２】すなわち、本発明によれば、噴射ノズルは
バネ部材を有して弁の開閉動作復元力を付与されること
に加えて、弁の軸方向運動減衰力を付与する手段を備え
て構成されているので、噴射ノズルの作動に伴い発生す
る弁の軸方向運動が減衰されることになり、弁の自励振
動の発生は抑制されて弁の作動の安定性は確保され、か
つ、摩耗等の発生も防止されて長期間に亘っての使用に
耐えられる好適な噴射ノズルの提供を図るようにしたも
のである。That is, according to the present invention, the injection nozzle is provided with a means for imparting an axial movement damping force to the valve in addition to having a spring member to impart a restoring force for opening and closing the valve. As a result, the axial movement of the valve that occurs with the operation of the injection nozzle is attenuated, the occurrence of self-excited vibration of the valve is suppressed, the stability of the valve operation is ensured, and the wear is reduced. The present invention is intended to provide a suitable spray nozzle capable of withstanding the use for a long period of time by preventing the occurrence of the like.
【００１３】また、本発明は、弁の開閉動作復元力と軸
方向運動減衰力を併せ付与する手段を備えた弁本体を有
してなる噴射ノズルを提供するものである。Another object of the present invention is to provide an injection nozzle having a valve body provided with a means for applying a restoring force for opening and closing the valve and a damping force in the axial direction.
【００１４】すなわち、本発明によれば、噴射ノズル
は、弁の開閉動作復元力と軸方向運動減衰力の両方を一
挙に併せ付与する手段を備えて構成されているので、極
めてシンプルな構成の下で、所期の減衰力を得ることが
でき、弁の自励振動の発生抑制により弁の作動の安定性
を確保し、摩耗等の発生も防止されて長期間に亘っての
使用に耐えられる好適な噴射ノズルの提供を図るように
したものである。That is, according to the present invention, since the injection nozzle is provided with means for simultaneously applying both the restoring force for opening and closing the valve and the damping force in the axial direction, the injection nozzle has an extremely simple structure. The desired damping force can be obtained below, ensuring stable operation of the valve by suppressing the self-excited vibration of the valve, and preventing the occurrence of wear, etc., to withstand long-term use. It is intended to provide a suitable injection nozzle.
【００１５】[0015]
【発明の実施の形態】本発明の実施の第１形態について
図１に基づいて説明する。なお、前記した従来のものと
同一の部分には、図中同一の符号を付して示し、重複す
る説明は極力省略し、本実施の形態に固有の特徴ある構
成について重点的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. Note that the same parts as those of the above-described conventional one are denoted by the same reference numerals in the drawings, overlapping description will be omitted as much as possible, and the characteristic features unique to the present embodiment will be mainly described.
【００１６】すなわち、本実施の形態においては、弁座
１と弁棒２１との間にＯリング７を配置し、同Ｏリング
７を上流側からＯリング押え８で押さえ、その上流側を
バネ受け３で支持したものである。That is, in the present embodiment, the O-ring 7 is arranged between the valve seat 1 and the valve stem 21, the O-ring 7 is pressed from the upstream side by the O-ring presser 8, and the upstream side is spring-loaded. This is supported by the receiver 3.
【００１７】このように構成された本実施の形態によれ
ば、弁２が軸方向に運動するとき、弁棒２１とＯリング
７との摺動摩擦により弁２に作用する減衰力が増大し、
その結果弁２に自励振動が発生しにくくなる。According to the present embodiment configured as described above, when the valve 2 moves in the axial direction, the damping force acting on the valve 2 due to the sliding friction between the valve rod 21 and the O-ring 7 increases,
As a result, self-excited vibration is less likely to occur in the valve 2.
【００１８】なお、図中２０は噴射ノズルの外形を示し
ており、また、Ｏリング７はここでは１個設けたものを
示しているが、この数は１個に限定されるものではな
く、複数個のＯリングを並行して設けてもよいことは勿
論である。In the drawing, reference numeral 20 denotes the outer shape of the injection nozzle, and here, the O-ring 7 is provided with one, but this number is not limited to one. Needless to say, a plurality of O-rings may be provided in parallel.
【００１９】次に本発明の実施の第２形態について図２
に基づいて説明する。なお、本実施の形態のものも前記
実施の第１形態と同様に前記した従来のものと同一の部
分には、図中同一の符号を付して示し、重複する説明は
極力省略し、本実施の形態に固有の特徴ある構成につい
て重点的に説明する。Next, a second embodiment of the present invention will be described with reference to FIG.
It will be described based on. In the present embodiment, the same parts as those in the conventional one described above are denoted by the same reference numerals in the drawings as in the first embodiment, and the overlapping description is omitted as much as possible. A description will be given mainly of a characteristic configuration unique to the embodiment.
【００２０】すなわち、本実施の形態においては、弁座
１と弁棒２１との間にブッシュ９を配置し、同ブッシュ
９をその上流側からブッシュ押え１０で押さえ、その上
流側をバネ受け３で支持したものである。That is, in the present embodiment, the bush 9 is disposed between the valve seat 1 and the valve rod 21, the bush 9 is pressed from the upstream side by the bush retainer 10, and the upstream side is supported by the spring receiver 3. It is supported by.
【００２１】このように構成された本実施の形態によれ
ば、弁２が軸方向に運動するとき、弁棒２１とブッシュ
９との摺動摩擦により弁２に作用する減衰力が増大し、
その結果弁２に自励振動が発生しにくくなる。According to the present embodiment configured as above, when the valve 2 moves in the axial direction, the damping force acting on the valve 2 due to the sliding friction between the valve rod 21 and the bush 9 increases,
As a result, self-excited vibration is less likely to occur in the valve 2.
【００２２】なおここではブッシュ９は１個設けたもの
を示しているが、この数は１個に限定されるものではな
く、複数個のブッシュを並べて配設し、摩擦力がより増
大する様にしてもよいことは勿論である。Although one bush 9 is shown here, the number is not limited to one, and a plurality of bushes are arranged side by side to increase the frictional force. Needless to say, this may be done.
【００２３】次に本発明の実施の第３形態について図３
に基づいて説明する。なお、本実施の形態のものも前記
実施の第１形態及び第２形態と同様に前記した従来のも
のと同一の部分には、図中同一の符号を付して示し、重
複する説明は極力省略し、本実施の形態に固有の特徴あ
る構成について重点的に説明する。Next, a third embodiment of the present invention will be described with reference to FIG.
It will be described based on. In the present embodiment, the same parts as those of the conventional one described above are denoted by the same reference numerals in the drawings as in the first and second embodiments, and the repeated description is omitted as much as possible. The description will be omitted, and the characteristic configuration unique to the present embodiment will be mainly described.
【００２４】すなわち本実施の形態のものは、弁棒２１
に取り付けるバネに工夫を施したものであり、ゴム系材
料の弾性体１１ｂ内にバネ１１ａを埋め込んで構成した
合成バネ１１を弁棒２１に取り付けたものである。That is, according to the present embodiment, the valve stem 21
The composite spring 11 is constructed by embedding a spring 11a in an elastic body 11b of a rubber-based material, and is attached to the valve stem 21.
【００２５】このように構成された本実施の形態によれ
ば、弁２が軸方向に運動するとき、バネ受け３、３間で
軸方向に伸縮運動する合成バネ１１に発生する減衰力は
バネ１１ａ単体の場合に比べて非常に大きくなり、その
結果弁２に自励振動が発生しにくくなる。According to the present embodiment configured as above, when the valve 2 moves in the axial direction, the damping force generated in the composite spring 11 that expands and contracts in the axial direction between the spring receivers 3 is equal to the spring force. 11a becomes very large as compared with the case of the single body, and as a result, self-excited vibration hardly occurs in the valve 2.
【００２６】次に本発明の実施の第４形態について図４
及び図５に基づいて説明する。なお、本実施の形態のも
のも前記実施の第１形態乃至第３形態と同様に前記した
従来のものと同一の部分には、図中同一の符号を付して
示し、重複する説明は極力省略し、本実施の形態に固有
の特徴ある構成について重点的に説明する。Next, a fourth embodiment of the present invention will be described with reference to FIG.
A description will be given based on FIG. In this embodiment, like the first to third embodiments, the same parts as those of the conventional one described above are denoted by the same reference numerals in the drawings, and overlapping description will be minimized. The description will be omitted, and the characteristic configuration unique to the present embodiment will be mainly described.
【００２７】本実施の形態も前記実施の第３形態と同様
に弁棒２１に取り付けるバネに工夫を施したものであ
り、本実施の形態においては、通常のコイルバネの使用
に代えて、円筒状に形成したゴム１２ａ、１２ｂ、１２
ｃの間に円筒状の銅板１２ｍ、１２ｎを交互に重ねて構
成した高減衰の積層ゴム１２を採用し、かつ、前記従来
のもの、及び他の実施の形態のバネ受け３、３に代えて
積層ゴム受け１３、１４により前記積層ゴム１２を支持
したものである。In this embodiment, a spring attached to the valve stem 21 is devised similarly to the third embodiment. In this embodiment, a cylindrical coil spring is used instead of a normal coil spring. Rubber 12a, 12b, 12 formed on
c, a high-damping laminated rubber 12 constituted by alternately stacking cylindrical copper plates 12m and 12n is adopted, and the spring supports 3 and 3 of the above-described conventional and other embodiments are used instead. The laminated rubber 12 is supported by laminated rubber receivers 13 and 14.
【００２８】このように構成された本実施の形態によれ
ば、弁２が軸方向に運動するとき、積層ゴム１２のゴム
１２ａ、１２ｂ、１２ｃの内部摩擦により、弁２の軸方
向の運動に対する減衰力が、単なるコイルバネに比べて
非常に大きくなり、その結果弁２に自励振動が発生しに
くくなる。According to the present embodiment configured as described above, when the valve 2 moves in the axial direction, the internal friction of the rubbers 12a, 12b, 12c of the laminated rubber 12 prevents the valve 2 from moving in the axial direction. The damping force is much greater than a simple coil spring, and as a result, self-excited vibration is less likely to occur in the valve 2.
【００２９】以上、本発明を図示の実施の形態について
説明したが、本発明はかかる実施の形態に限定されず、
本発明の範囲内でその具体的構造に種々の変更を加えて
よいことはいうまでもない。Although the present invention has been described with reference to the illustrated embodiment, the present invention is not limited to such an embodiment.
It goes without saying that various changes may be made to the specific structure within the scope of the present invention.
【００３０】[0030]
【発明の効果】以上説明したように本発明によれば、弁
の開閉動作復元力を付与するバネ部材と、弁の軸方向運
動減衰力を付与する手段を備えた弁本体を有して噴射ノ
ズルを構成したので、噴射ノズルはバネ部材により弁の
開閉動作復元力を付与されることに加えて、弁の軸方向
運動減衰力を付与する手段により噴射ノズルの作動に伴
い発生する弁の軸方向運動が減衰されて弁の自励振動の
発生は抑制され、以て弁の作動の安定性は確保され、か
つ、摩耗等の発生も防止されて長期間に亘っての使用に
耐えられる好適な噴射ノズルを得ることが出来たもので
ある。As described above, according to the present invention, injection is performed by using a spring member for providing a restoring force for opening and closing the valve, and a valve body having a means for providing a damping force for the axial movement of the valve. Since the nozzle is configured, the injection nozzle is provided with the opening / closing operation restoring force of the valve by the spring member, and the axis of the valve generated by the operation of the injection nozzle by the means for applying the axial motion damping force of the valve. The directional motion is attenuated, and the occurrence of self-excited vibration of the valve is suppressed, so that the stability of the valve operation is ensured, and the occurrence of wear and the like is prevented, so that it can be used for a long period of time. It was possible to obtain a suitable injection nozzle.
【００３１】また、請求項２の発明によれば、弁の開閉
動作復元力と軸方向運動減衰力を併せ付与する手段を備
えた弁本体を有して噴射ノズルを構成したので、噴射ノ
ズルは、弁の開閉動作復元力と軸方向運動減衰力の両方
を一挙に併せ付与する手段により、極めてシンプルな構
成の下で所期の減衰力を得ることができ、弁の自励振動
の発生を抑制し、以て弁の作動の安定性を確保し、摩耗
等の発生も防止されて長期間に亘っての使用に耐えられ
る好適な噴射ノズルを得ることが出来たものである。Further, according to the second aspect of the present invention, the injection nozzle is constituted by having the valve body having the means for applying the restoring force of the opening and closing operation of the valve and the damping force in the axial direction. The means for applying both the opening / closing operation restoring force of the valve and the axial motion damping force at a time enables the desired damping force to be obtained with an extremely simple configuration, and the occurrence of self-excited vibration of the valve can be reduced. Thus, it is possible to obtain a suitable injection nozzle that ensures the operation stability of the valve, prevents the occurrence of wear and the like, and can withstand long-term use.
【図１】本発明の実施の第１形態に係る噴射ノズルの概
要を示す部分断面図である。FIG. 1 is a partial cross-sectional view schematically illustrating an injection nozzle according to a first embodiment of the present invention.
【図２】本発明の実施の第２形態に係る噴射ノズルの概
要を示す部分断面図である。FIG. 2 is a partial sectional view showing an outline of an injection nozzle according to a second embodiment of the present invention.
【図３】本発明の実施の第３形態に係る噴射ノズルの概
要を示す部分断面図である。FIG. 3 is a partial cross-sectional view schematically showing an injection nozzle according to a third embodiment of the present invention.
【図４】本発明の実施の第４形態に係る噴射ノズルの概
要を示す部分断面図である。FIG. 4 is a partial cross-sectional view schematically showing an injection nozzle according to a fourth embodiment of the present invention.
【図５】図４の要部である積層ゴムの概要を示し、
（ａ）はその縦断面図、（ｂ）は軸方向断面図である。5 shows an outline of a laminated rubber which is a main part of FIG. 4,
(A) is a longitudinal sectional view, and (b) is an axial sectional view.
【図６】従来の噴射ノズルの概要を示す部分断面図であ
る。FIG. 6 is a partial cross-sectional view showing an outline of a conventional injection nozzle.
１ 弁座 １ａ 通路 ２ 弁 ３ バネ受け ４ ナット ５ バネ ６ 割ピン ７ Ｏリング ８ Ｏリング押え ９ ブッシュ １０ ブッシュ押え １１ 合成バネ １１ａ バネ １１ｂ 弾性体 １２ 積層ゴム １２ａ ゴム １２ｂ ゴム １２ｃ ゴム １２ｍ 銅板 １２ｎ 銅板 １３ 積層ゴム受け １４ 積層ゴム受け ２１ 弁棒 Reference Signs List 1 valve seat 1a passage 2 valve 3 spring receiver 4 nut 5 spring 6 split pin 7 O-ring 8 O-ring holder 9 bush 10 bush holder 11 synthetic spring 11a spring 11b elastic body 12 laminated rubber 12a rubber 12b rubber 12c rubber 12m copper plate 12n copper plate 13 laminated rubber receiver 14 laminated rubber receiver 21 valve stem
Claims (2)
と、弁の軸方向運動減衰力を付与する手段を備えた弁本
体を有してなることを特徴とする噴射ノズル。1. An injection nozzle comprising: a spring member for providing a restoring force for opening and closing a valve; and a valve body including a means for providing a damping force for axial movement of the valve.
を併せ付与する手段を備えた弁本体を有してなることを
特徴とする噴射ノズル。2. An injection nozzle comprising a valve body having means for simultaneously applying a restoring force for opening and closing a valve and a damping force for an axial movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10173296A JP2000005644A (en) | 1998-06-19 | 1998-06-19 | Injection nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10173296A JP2000005644A (en) | 1998-06-19 | 1998-06-19 | Injection nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000005644A true JP2000005644A (en) | 2000-01-11 |
Family
ID=15957822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10173296A Withdrawn JP2000005644A (en) | 1998-06-19 | 1998-06-19 | Injection nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000005644A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100423264B1 (en) * | 2001-07-31 | 2004-03-24 | (주)페스코 | Double spring spray valve for deaerator of boiler |
| JP2004255231A (en) * | 2003-02-24 | 2004-09-16 | Katsutoshi Masuda | Fluid delivery pump |
| KR100544654B1 (en) * | 2001-10-29 | 2006-01-23 | 주식회사 포스코 | Water nozzle with improved dust-catching efficiency, using in the saturator of dust-catching member |
| KR101037380B1 (en) | 2010-12-16 | 2011-05-26 | 주식회사 신흥기공 | Boiler desuperhearter having variable nozzle |
| KR200454858Y1 (en) | 2009-11-25 | 2011-08-02 | 동아이엔지(주) | Spring injection valve for boiler feed water deaerator |
| KR101225211B1 (en) * | 2011-08-09 | 2013-01-22 | 티엠디이엔지(주) | Desuperheater spray nozzle |
| KR101920788B1 (en) * | 2016-10-19 | 2018-11-21 | 두산중공업 주식회사 | Spray Valve Having Structure for Controlling Quantity of Water, and Deaerator Having the Same |
| KR101920793B1 (en) * | 2016-10-19 | 2018-11-21 | 두산중공업 주식회사 | Spray Valve Having Structure for Controlling Quantity of Water, and Deaerator Having the Same |
| KR101920705B1 (en) * | 2016-10-17 | 2018-11-21 | 두산중공업 주식회사 | Spray Valve Having Structure for Controlling Quantity of Water, and Deaerator Having the Same |
| KR101920737B1 (en) * | 2016-10-19 | 2018-11-22 | 두산중공업 주식회사 | Spray Valve Having Structure for Controlling Quantity of Water, and Deaerator Having the Same |
| CN109537675A (en) * | 2018-12-27 | 2019-03-29 | 南昌大学 | A kind of rainwater comprehensive utilization system |
-
1998
- 1998-06-19 JP JP10173296A patent/JP2000005644A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100423264B1 (en) * | 2001-07-31 | 2004-03-24 | (주)페스코 | Double spring spray valve for deaerator of boiler |
| KR100544654B1 (en) * | 2001-10-29 | 2006-01-23 | 주식회사 포스코 | Water nozzle with improved dust-catching efficiency, using in the saturator of dust-catching member |
| JP2004255231A (en) * | 2003-02-24 | 2004-09-16 | Katsutoshi Masuda | Fluid delivery pump |
| KR200454858Y1 (en) | 2009-11-25 | 2011-08-02 | 동아이엔지(주) | Spring injection valve for boiler feed water deaerator |
| KR101037380B1 (en) | 2010-12-16 | 2011-05-26 | 주식회사 신흥기공 | Boiler desuperhearter having variable nozzle |
| KR101225211B1 (en) * | 2011-08-09 | 2013-01-22 | 티엠디이엔지(주) | Desuperheater spray nozzle |
| KR101920705B1 (en) * | 2016-10-17 | 2018-11-21 | 두산중공업 주식회사 | Spray Valve Having Structure for Controlling Quantity of Water, and Deaerator Having the Same |
| KR101920788B1 (en) * | 2016-10-19 | 2018-11-21 | 두산중공업 주식회사 | Spray Valve Having Structure for Controlling Quantity of Water, and Deaerator Having the Same |
| KR101920793B1 (en) * | 2016-10-19 | 2018-11-21 | 두산중공업 주식회사 | Spray Valve Having Structure for Controlling Quantity of Water, and Deaerator Having the Same |
| KR101920737B1 (en) * | 2016-10-19 | 2018-11-22 | 두산중공업 주식회사 | Spray Valve Having Structure for Controlling Quantity of Water, and Deaerator Having the Same |
| CN109537675A (en) * | 2018-12-27 | 2019-03-29 | 南昌大学 | A kind of rainwater comprehensive utilization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20050906 |