JP4373818B2 - Stator cooling water supply device for rotating electrical machines - Google Patents

Stator cooling water supply device for rotating electrical machines Download PDF

Info

Publication number
JP4373818B2
JP4373818B2 JP2004064935A JP2004064935A JP4373818B2 JP 4373818 B2 JP4373818 B2 JP 4373818B2 JP 2004064935 A JP2004064935 A JP 2004064935A JP 2004064935 A JP2004064935 A JP 2004064935A JP 4373818 B2 JP4373818 B2 JP 4373818B2
Authority
JP
Japan
Prior art keywords
hydrogen gas
cooling water
water
gas
rotating electrical
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 - Lifetime
Application number
JP2004064935A
Other languages
Japanese (ja)
Other versions
JP2005261003A (en
Inventor
有俊 西川
鉄博 藤田
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2004064935A priority Critical patent/JP4373818B2/en
Publication of JP2005261003A publication Critical patent/JP2005261003A/en
Application granted granted Critical
Publication of JP4373818B2 publication Critical patent/JP4373818B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Motor Or Generator Cooling System (AREA)

Description

この発明は、発電機などの回転電機の固定子巻線に冷却水を供給する回転電機の固定子冷却水供給装置に関するものである。   The present invention relates to a stator cooling water supply device for a rotating electrical machine that supplies cooling water to a stator winding of a rotating electrical machine such as a generator.

大容量の発電機などの水冷却式の回転電機は、機内に水素ガスを封入し、固定子巻線は中空の銅管で構成された巻線内に冷却水を循環させる構成となっており、巻線には発電される電圧が加わるために循環させる冷却水は、電気抵抗が大きな純水が使用されている。一般的に水に対する酸素の飽和量は常温で８ｐｐｍ程度であり、そのような冷却水を巻線に循環させると、冷却水中の溶存酸素は銅管で構成された固定子巻線の内面を酸化させることにより消費されて少なくなり、溶存酸素量が１ｐｐｍ以下の状態になると、銅管内面には酸化第一銅が生成し、酸化第一銅は剥離しやすいので、生成された酸化第一銅が剥離して冷却水流路や冷却水流路に設けられたフィルタに堆積し、冷却水の流れが阻害される問題点がある。   A water-cooled rotary electric machine such as a large-capacity generator has hydrogen gas sealed in the machine, and the stator winding is configured to circulate cooling water in a winding made of a hollow copper tube. Since the generated voltage is applied to the windings, pure water having a large electric resistance is used as the cooling water to be circulated. In general, the saturation amount of oxygen with respect to water is about 8 ppm at room temperature, and when such cooling water is circulated through the windings, dissolved oxygen in the cooling water oxidizes the inner surface of the stator winding composed of copper pipes. When the amount of dissolved oxygen is reduced to 1 ppm or less, cuprous oxide is formed on the inner surface of the copper tube, and the cuprous oxide is easily peeled off. Peels off and accumulates on the cooling water flow path and the filter provided in the cooling water flow path, and there is a problem that the flow of the cooling water is hindered.

水冷却式回転電機の冷却水供給装置の例として、例えば特許文献１に示されている。
この構成は、固定子巻線に流す冷却水の溶存酸素量を多くして、生成される酸化銅が組織的に強固で剥離しにくい酸化第二銅が生成されるようにしたものである。 An example of a cooling water supply device for a water-cooled rotating electrical machine is disclosed in Patent Document 1, for example.
In this configuration, the amount of dissolved oxygen in the cooling water flowing through the stator winding is increased so that cupric oxide is generated that is strong and difficult to peel.

特許文献１に示された構成は、特許文献１の図１に示されているように、発電機の固定子巻線を冷却する冷却水は、貯水槽からポンプ、冷却器、フィルタ、溶存酸素測定器、固定子巻線を経由して貯水槽に戻るように冷却水流路を形成し、冷却水を供給する流路の酸素濃度計により水中溶存酸素濃度を測定し、水中溶存酸素が１ｐｐｍ以上となるように酸素ボンベから酸素ガスを供給する構成としている。冷却水中の水中溶存酸素濃度を１ｐｐｍ以上に調整したことにより、コイル銅管の内面に酸化第二銅が生成し、これが維持されることによりコイル銅管の内面腐食が抑制されるというものである。   In the configuration shown in Patent Document 1, as shown in FIG. 1 of Patent Document 1, the cooling water for cooling the stator windings of the generator is supplied from a water tank to a pump, a cooler, a filter, dissolved oxygen. A cooling water flow path is formed so as to return to the water storage tank via the measuring device and the stator winding, and the dissolved oxygen concentration in the water is measured with an oxygen concentration meter in the flow path for supplying the cooling water. Thus, the oxygen gas is supplied from the oxygen cylinder. By adjusting the dissolved oxygen concentration in the cooling water to 1 ppm or more, cupric oxide is generated on the inner surface of the coiled copper tube, and this is maintained, whereby the inner surface corrosion of the coiled copper tube is suppressed. .

また、特許文献２には、水冷電機の固定子巻線を銅管で構成し、銅管巻線の内径部に冷却水を循環させて冷却する構成が示され、冷却水循環回路には、バラジウム触媒を持つ脱酸装置が接続され、水素ガスを飽和させる水素ガス源が接続された構成となっている。
この構成では冷却水中に水素を溶解飽和させ、バラジウム触媒層において溶解酸素が水素と結合して水になる反応を促進させ、冷却水中の溶存酸素量が少なくなり、銅管巻線の腐食の進行が防止できる構成である。 Patent Document 2 discloses a configuration in which a stator winding of a water-cooled electric machine is configured by a copper tube and cooling is performed by circulating cooling water around an inner diameter portion of the copper tube winding. A deoxidation apparatus having a catalyst is connected, and a hydrogen gas source for saturating hydrogen gas is connected.
This configuration dissolves and saturates hydrogen in the cooling water, accelerates the reaction of dissolved oxygen to form hydrogen in the palladium catalyst layer, reduces the amount of dissolved oxygen in the cooling water, and advances the corrosion of the copper tube winding. It is the structure which can prevent.

特開平９−２８９７５０号公報JP-A-9-289750 特開昭５０−５０６０４号公報Japanese Patent Laid-Open No. 50-50604

特許文献１に示された冷却水供給装置は、冷却水中の溶存酸素量を１ｐｐｍ以上に調整して銅管コイル内面の腐食の進行を抑える構成であるが、運転中の酸素の供給が止まると溶存酸素が銅管巻線内面の酸化に消費されて溶存酸素量が少なくなり、銅管内面には酸化第一銅が生成し、酸化第一銅は剥離し易いために、酸化第一銅の生成、剥離を繰り返すこととなり、腐食が進行するとともに、冷却水流路に堆積して冷却水の流れが阻害されることとなるので溶存酸素量は常に１ｐｐｍ以上になるように酸素を供給し続けなければならない問題点がある。
また、特許文献２の構成では、貯水槽には水素を供給し、パラジウム触媒を持つ脱酸装置が必要であり、装置として複雑になって製作コストが高くなる問題点がある。 The cooling water supply apparatus disclosed in Patent Document 1 is configured to adjust the dissolved oxygen amount in the cooling water to 1 ppm or more to suppress the progress of corrosion on the inner surface of the copper tube coil, but when the supply of oxygen during operation stops Dissolved oxygen is consumed for the oxidation of the copper tube winding inner surface, the amount of dissolved oxygen is reduced, cuprous oxide is formed on the inner surface of the copper tube, and cuprous oxide is easy to peel off. Since generation and separation are repeated, corrosion progresses, and deposits in the cooling water flow path impedes the flow of cooling water, so oxygen must be continuously supplied so that the dissolved oxygen amount is always 1 ppm or more. There is a problem that must be done.
Moreover, in the structure of patent document 2, hydrogen is supplied to a water tank and the deoxidation apparatus which has a palladium catalyst is required, There exists a problem which becomes complicated as an apparatus and manufacture cost becomes high.

この発明は、上記問題点を解決するためになされたものであり、冷却水供給装置の貯水槽の気相部に水素を充満させ、冷却水中の溶存酸素を水素に置換して銅管で形成された固定子巻線が酸化しないように構成したものである。   The present invention has been made to solve the above-mentioned problems, and fills the gas phase part of the water tank of the cooling water supply device with hydrogen, and replaces dissolved oxygen in the cooling water with hydrogen to form a copper tube. The stator winding thus formed is configured not to be oxidized.

この発明に係る回転電機の冷却水供給装置は、貯水槽に水素ガスを供給する水素ガス供給手段と貯水槽内のガスを放出するガス放出手段および冷却水の水中酸素濃度計を備え、上記水中酸素濃度計が検出した上記貯水槽内の冷却水中の溶存酸素量が管理値を越えたとき、管理値以下になるまで貯水槽内に水素ガスを水素ガス供給手段により供給し、ガス放出手段により貯水槽内のガスを放出することによって水素置換するものである。   A cooling water supply device for a rotating electrical machine according to the present invention comprises a hydrogen gas supply means for supplying hydrogen gas to a water storage tank, a gas release means for discharging the gas in the water storage tank, and an oxygen concentration meter in the water of cooling water, When the amount of dissolved oxygen in the cooling water in the water tank detected by the oxygen concentration meter exceeds the control value, hydrogen gas is supplied to the water tank by the hydrogen gas supply means until the control value falls below the control value, and the gas discharge means Hydrogen is replaced by releasing the gas in the water tank.

この発明によれば、貯水槽内に水素ガスを供給する供給手段およびガス放出手段を備えた構成としたので、冷却水中の溶存酸素を水素に置換する水素置換作業が簡単なバルブ操作で行うことができる。また、自動的に行われるように構成することも容易であり、水素置換後は銅管で形成された固定子巻線の酸化がなく、回転電機の安定運転を可能にする。   According to the present invention, since the supply means for supplying hydrogen gas and the gas release means are provided in the water tank, the hydrogen replacement work for replacing the dissolved oxygen in the cooling water with hydrogen can be performed with a simple valve operation. Can do. Moreover, it is easy to configure so that it is automatically performed, and after the hydrogen replacement, there is no oxidation of the stator winding formed of the copper tube, and the stable operation of the rotating electrical machine is possible.

実施の形態１．
図１は実施の形態１の回転電機の固定子冷却水供給装置の構成図である。この構成は固定子冷却水を貯水する貯水槽１０と、貯水槽１０から回転電機１の固定子巻線２に固定子冷却水を供給するポンプ１２および冷却水を冷却する冷却器１３が接続された冷却水供給管１１と、回転電機１の固定子銅管巻線２を冷却した冷却水を集合する集合管３を経由して貯水槽１０に帰還させる冷却水戻り管１４と、貯水槽に冷却水を給水する冷却水給水弁１５と、貯水槽１０の水位を適正水位に制御する水位制御手段１６とで冷却水循環流路が形成されている。 Embodiment 1 FIG.
1 is a configuration diagram of a stator cooling water supply device for a rotating electrical machine according to Embodiment 1. FIG. In this configuration, a water storage tank 10 for storing stator cooling water, a pump 12 for supplying stator cooling water from the water storage tank 10 to the stator winding 2 of the rotating electrical machine 1, and a cooler 13 for cooling the cooling water are connected. The cooling water supply pipe 11, the cooling water return pipe 14 that returns the cooling water to the water storage tank 10 through the collecting pipe 3 that collects the cooling water that has cooled the stator copper tube winding 2 of the rotating electrical machine 1, and the water storage tank A cooling water circulation passage is formed by the cooling water supply valve 15 for supplying cooling water and the water level control means 16 for controlling the water level of the water storage tank 10 to an appropriate water level.

水素ガス供給手段２０は、水素ガス貯蔵源（図示していない）に接続された水素ガス取入管２１に水素ガス供給弁２２を接続し、水素ガス供給弁２２から水素ガス供給管２３により貯水槽１０に接続された構成である。水素ガス供給管２３にはＴ分岐してドレン管２７が接続されその先端のドレン弁２８が接続されており、水素ガス供給管２３にドレンがたまった場合には排出できるようになっている。
貯水槽１０内の圧力が異常に上昇したときには、水素ガス放圧管２４を通って圧力調整弁２５から放圧ガス接続管２６によりガス放圧管に至る経路で放出される。 The hydrogen gas supply means 20 has a hydrogen gas supply valve 22 connected to a hydrogen gas intake pipe 21 connected to a hydrogen gas storage source (not shown), and the water tank is connected to the hydrogen gas supply pipe 23 through the hydrogen gas supply pipe 23. 10 is connected. A drain pipe 27 is connected to the hydrogen gas supply pipe 23 by a T-branch, and a drain valve 28 at the tip of the hydrogen gas supply pipe 23 is connected to the hydrogen gas supply pipe 23.
When the pressure in the water storage tank 10 rises abnormally, it is discharged through a hydrogen gas pressure relief pipe 24 through a path from the pressure regulating valve 25 to the gas pressure relief pipe through the pressure relief gas connection pipe 26.

貯水槽１０内の酸素濃度が高くなった場合のガス放出手段３０は、水中酸素濃度計３１と、貯水槽１０に接続されたガス導出管３２と、ガス放出弁３３と、ガス放出管３４で構成されている。ガス放出管３４にはＴ分岐してドレン管３５が接続され、その先端のドレン弁３６が接続されており、ガス放出管３４にドレンがたまった場合には排出できるようになっている。
貯水槽１０の酸素濃度は常時水中酸素濃度計３１により測定され、供給された水素ガスが貯水槽１０内の冷却水中の酸素と置換されて、貯水槽１０内の冷却水の水中酸素濃度が管理値を越えた場合には、ガス放出弁３３を解放して貯水槽内ガスを放出し、水素ガス供給手段２０により新しい水素ガスを供給して水素置換作業を行うことができる。 The gas release means 30 when the oxygen concentration in the water storage tank 10 becomes high includes an underwater oxygen concentration meter 31, a gas outlet pipe 32 connected to the water tank 10, a gas release valve 33, and a gas release pipe 34. It is configured. A drain pipe 35 is connected to the gas discharge pipe 34 by a T-branch, and a drain valve 36 is connected to the tip of the gas discharge pipe 34. When the drain is accumulated in the gas discharge pipe 34, it can be discharged.
The oxygen concentration in the water storage tank 10 is always measured by the water oxygen concentration meter 31, and the supplied hydrogen gas is replaced with oxygen in the cooling water in the water storage tank 10, and the oxygen concentration in the cooling water in the water storage tank 10 is managed. When the value is exceeded, the gas release valve 33 is released to release the gas in the water tank, and new hydrogen gas can be supplied by the hydrogen gas supply means 20 to perform the hydrogen replacement operation.

このように回転電機１の固定子冷却水を供給する固定子冷却水給水装置を、貯水槽１０内に水素ガスを供給する水素ガス供給手段２０およびガス放出手段３０を備えた構成としたことにより、冷却水中の溶存酸素を水素に置換する水素置換作業が簡単なバルブ操作で行うことができる。   In this way, the stator cooling water supply device that supplies the stator cooling water of the rotating electrical machine 1 includes the hydrogen gas supply means 20 and the gas discharge means 30 that supply hydrogen gas into the water storage tank 10. The hydrogen replacement work for replacing the dissolved oxygen in the cooling water with hydrogen can be performed with a simple valve operation.

また、水素ガス供給弁２２およびガス放出弁３３を電磁弁とし、水中酸素濃度計３１により検出した酸素濃度により水素ガスの供給と、貯水槽１０の置換されたガスの放出が自動的に行えるようにすると、水素ガス置換するための作業員を充当することなく、自動的に行うことができる。水素置換後は固定子巻線の酸化がなく、回転電機の安定運転を可能にする。また、水素ガス置換は、回転電機の運転開始前の温度上昇しない状態で行っておくと、固定子巻線２の酸化が軽減できる。   Further, the hydrogen gas supply valve 22 and the gas release valve 33 are electromagnetic valves so that the supply of hydrogen gas and the discharge of the replaced gas in the water storage tank 10 can be automatically performed based on the oxygen concentration detected by the oxygen concentration meter 31 in water. Then, it can be performed automatically without allocating workers for replacing hydrogen gas. After the hydrogen replacement, there is no oxidation of the stator winding, which enables stable operation of the rotating electrical machine. Further, if the hydrogen gas replacement is performed in a state where the temperature does not rise before the operation of the rotating electrical machine starts, oxidation of the stator winding 2 can be reduced.

実施の形態２．
実施の形態２の固定子冷却水供給装置の構成を図２に示す。実施の形態１では、水素ガスの供給を貯水槽１０の気相部に供給する構成としていたために、水素ガスが水面の拡散による置換であり、置換する時間が長くなる問題点があった。
実施の形態２では、水素ガスを貯水槽１０の液相部に注入するように構成したものであり、その構成を図２に示す。図２の構成は、図１における水素ガス供給手段２０の水素ガス供給管２３の先端が貯水槽１０の液相部になるようにした水素ガス供給管４３に変えたものである。その他の部分は図１と同一である。 Embodiment 2. FIG.
The configuration of the stator cooling water supply device according to the second embodiment is shown in FIG. In the first embodiment, since the supply of hydrogen gas is supplied to the gas phase portion of the water storage tank 10, the hydrogen gas is replaced by diffusion of the water surface, and there is a problem that the time for replacement becomes long.
The second embodiment is configured to inject hydrogen gas into the liquid phase portion of the water tank 10, and the configuration is shown in FIG. 2 is changed to a hydrogen gas supply pipe 43 in which the tip of the hydrogen gas supply pipe 23 of the hydrogen gas supply means 20 in FIG. 1 is the liquid phase part of the water storage tank 10. The other parts are the same as in FIG.

このように水素ガスを貯水槽１０の液相部に供給する構成にすると、水素ガスはバブリング供給となり、酸素との置換時間が短時間で行うことができるようになる。またこの構成においても、水素ガス供給弁２２およびガス放出弁３３を電磁弁とし、水中酸素濃度計３１により検出した酸素濃度により水素ガスの供給と、貯水槽１０の置換されたガスの放出が自動的に行えるようにすると、水素ガス置換するための作業員を充当することなく、自動的に行うことができる。   When the hydrogen gas is supplied to the liquid phase portion of the water storage tank 10 as described above, the hydrogen gas is supplied by bubbling, and the replacement time with oxygen can be performed in a short time. Also in this configuration, the hydrogen gas supply valve 22 and the gas release valve 33 are electromagnetic valves, and the supply of hydrogen gas and the release of the substituted gas in the water storage tank 10 are automatically performed based on the oxygen concentration detected by the oxygen concentration meter 31 in water. If it can be performed automatically, it can be performed automatically without allocating a worker for replacing hydrogen gas.

実施の形態３．
実施の形態３は、貯水槽１０への水素ガスを気相中の酸素ガス濃度を検出し、その濃度が管理値を越えたときに水素ガスが供給されるように構成したものである。その構成を図３に示す。図３の構成は、実施の形態１の図１の構成の水中酸素濃度計３１を気相中の酸素濃度を検出する気中酸素濃度計５１としたものである。その他の構成は図１と同一である。気中酸素濃度計は構造が簡単であり、装置として安価に構成することができる。また、水素ガス置換するための作業員を充当することなく、自動的に行う構成が容易に構成することができる。 Embodiment 3 FIG.
In the third embodiment, the hydrogen gas to the water storage tank 10 is configured such that the oxygen gas concentration in the gas phase is detected, and the hydrogen gas is supplied when the concentration exceeds the control value. The configuration is shown in FIG. In the configuration of FIG. 3, the underwater oxygen concentration meter 31 of the configuration of FIG. 1 of the first embodiment is an air oxygen concentration meter 51 that detects the oxygen concentration in the gas phase. Other configurations are the same as those in FIG. The air oximeter has a simple structure and can be configured as an inexpensive device. Moreover, the structure performed automatically can be easily comprised, without allocating the worker for hydrogen gas replacement.

実施の形態１の回転電機の固定子冷却水供給装置の構成図である。3 is a configuration diagram of a stator cooling water supply device for a rotating electrical machine according to Embodiment 1. FIG. 実施の形態２の回転電機の固定子冷却水供給装置の構成図である。FIG. 6 is a configuration diagram of a stator cooling water supply device for a rotating electrical machine according to a second embodiment. 実施の形態３の回転電機の固定子冷却水供給装置の構成図である。FIG. 10 is a configuration diagram of a stator cooling water supply device for a rotating electrical machine according to a third embodiment.

符号の説明Explanation of symbols

１ 回転電機、２ 固定子巻線、３ 集合管、１０ 貯水槽、１１ 冷却水供給管、
１２ 循環ポンプ、１３ 冷却器、１４ 冷却水戻り管、１５ 冷却水給水弁、
１６ 水位制御手段、１７ 排水弁、２０ 水素ガス供給手段、２１ 水素ガス取入管、
２２ 水素ガス供給弁、２３ 水素ガス供給管、２４ 水素ガス放圧管、
２５ 圧力調整弁、２６ 放圧ガス接続管、３０ ガス放出手段、
３１ 水中酸素濃度計、３２ ガス導出管、３３ ガス放出弁、３４ ガス放出管、
４０ 水素ガス供給手段、４３ 水素ガス供給管、５０ 水素ガス供給手段、
５１ 気中酸素濃度計。 1 rotating electrical machine, 2 stator windings, 3 collecting pipes, 10 water storage tank, 11 cooling water supply pipe,
12 circulating pumps, 13 coolers, 14 cooling water return pipes, 15 cooling water feed valves,
16 Water level control means, 17 Drain valve, 20 Hydrogen gas supply means, 21 Hydrogen gas intake pipe,
22 Hydrogen gas supply valve, 23 Hydrogen gas supply pipe, 24 Hydrogen gas pressure relief pipe,
25 pressure regulating valve, 26 pressure release gas connection pipe, 30 gas release means,
31 Oxygen meter in water, 32 Gas outlet pipe, 33 Gas release valve, 34 Gas release pipe,
40 hydrogen gas supply means, 43 hydrogen gas supply pipe, 50 hydrogen gas supply means,
51 Air oxygen concentration meter.

Claims (5)

貯水槽と、冷却水を回転電機の固定子巻線に供給する循環ポンプおよび冷却器を備えた冷却水供給流路と、上記回転電機の固定子巻線から上記貯水槽に帰還させる冷却水戻り流路と、上記貯水槽の水位を制御する水位制御手段と、水素ガス貯蔵源に接続され、上記貯水槽に水素ガスを供給する水素ガス供給手段と、上記貯水槽内部からガスを放出するガス放出手段と、上記貯水槽内の冷却水の溶存酸素量を検出する水中酸素濃度計とを備え、上記水中酸素濃度計が検出した溶存酸素量が管理値を越えたとき、管理値以下になるまで上記貯水槽内に上記水素ガス供給手段により水素ガスを供給し、上記ガス放出手段により上記貯水槽内ガスを放出することによって水素置換することを特徴とする回転電機の固定子冷却水供給装置。 A water storage tank, a cooling water supply passage provided with a circulation pump and a cooler for supplying cooling water to the stator winding of the rotating electrical machine, and a cooling water return for returning to the water storage tank from the stator winding of the rotating electrical machine A flow path, a water level control means for controlling the water level of the water tank, a hydrogen gas supply means connected to a hydrogen gas storage source for supplying hydrogen gas to the water tank, and a gas for releasing gas from the inside of the water tank A discharge means and an underwater oxygen concentration meter for detecting the dissolved oxygen amount of the cooling water in the water storage tank, and when the dissolved oxygen amount detected by the underwater oxygen concentration meter exceeds a control value, the control value falls below the control value A stator cooling water supply device for a rotating electric machine, wherein hydrogen replacement is performed by supplying hydrogen gas into the water storage tank by the hydrogen gas supply means and discharging the gas in the water storage tank by the gas discharge means . 上記水素ガス供給手段の供給口は上記貯水槽の液相部に位置していることを特徴とする請求項１記載の回転電機の固定子冷却水供給装置。 2. The stator cooling water supply device for a rotating electrical machine according to claim 1, wherein the supply port of the hydrogen gas supply means is located in a liquid phase part of the water storage tank. 上記水素ガス供給手段の水素ガス供給弁およびガス放出手段のガス放出弁は電磁弁とし、上記水中酸素濃度計が検出した水中酸素濃度により、上記水素ガス供給手段からの水素ガスの供給およびガス放出手段からのガス放出を制御する制御装置を備えたことを特徴とする請求項１または請求項２記載の回転電機の固定子冷却水供給装置。 The hydrogen gas supply valve of the hydrogen gas supply means and the gas release valve of the gas discharge means are electromagnetic valves, and the supply and release of hydrogen gas from the hydrogen gas supply means according to the oxygen concentration in water detected by the underwater oxygen concentration meter The stator cooling water supply device for a rotating electrical machine according to claim 1 or 2, further comprising a control device for controlling gas discharge from the means. 上記水中酸素濃度計の代わりに、上記貯水槽内の気相部に気中酸素濃度検出手段を備え、上記水素ガス供給手段のガス供給弁およびガス放出手段のガス放出弁は電磁弁とし、上記気中酸素濃度検出手段が検出した気中酸素濃度により、上記水素ガス供給手段からの水素ガス供給およびガス放出手段からのガス放出を制御する制御装置を備えたことを特徴とする請求項１または請求項２記載の回転電機の固定子冷却水供給装置。 Instead of the underwater oxygen concentration meter , a gas phase portion in the water tank is provided with an air oxygen concentration detection means, the gas supply valve of the hydrogen gas supply means and the gas release valve of the gas discharge means are electromagnetic valves, 2. A control device for controlling hydrogen gas supply from the hydrogen gas supply means and gas release from the gas discharge means according to the air oxygen concentration detected by the air oxygen concentration detection means. The stator cooling water supply device for a rotating electrical machine according to claim 2. 上記貯水槽内の水素置換は、回転電機の運転前に行うことを特徴とする請求項１〜請求項４のいずれかに記載の回転電機の固定子冷却水供給装置。 The stator cooling water supply device for a rotating electrical machine according to any one of claims 1 to 4, wherein the hydrogen replacement in the water storage tank is performed before the operation of the rotating electrical machine.
JP2004064935A 2004-03-09 2004-03-09 Stator cooling water supply device for rotating electrical machines Expired - Lifetime JP4373818B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004064935A JP4373818B2 (en) 2004-03-09 2004-03-09 Stator cooling water supply device for rotating electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004064935A JP4373818B2 (en) 2004-03-09 2004-03-09 Stator cooling water supply device for rotating electrical machines

Publications (2)

Publication Number Publication Date
JP2005261003A JP2005261003A (en) 2005-09-22
JP4373818B2 true JP4373818B2 (en) 2009-11-25

Family

ID=35086204

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004064935A Expired - Lifetime JP4373818B2 (en) 2004-03-09 2004-03-09 Stator cooling water supply device for rotating electrical machines

Country Status (1)

Country Link
JP (1) JP4373818B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101676913B1 (en) * 2014-03-10 2016-11-29 이태원 A device for measuring hydrogen leakage into the stator coolant
US11095192B1 (en) 2020-01-28 2021-08-17 Arthur Leon Kowitz System for cooling an electric motor

Also Published As

Publication number Publication date
JP2005261003A (en) 2005-09-22

Similar Documents

Publication Publication Date Title
JP4231205B2 (en) Generator cooling device and cooling method
EP1038839A2 (en) Reductive heat exchange water and heat exchange system using such water
JP2011508947A (en) Combustion of hydrogen at the cathode of a fuel cell at start-up
JP2015166478A (en) water electrolysis system
JP4373818B2 (en) Stator cooling water supply device for rotating electrical machines
JPWO2005038853A1 (en) X-ray equipment
JP2008104355A (en) Cooling system of dynamoelectric machine bearing for water power generating stations
JP2010129353A (en) Starting control device for fuel cell system
JP2006024431A (en) Fuel cell system
JP2007216122A (en) Degassing apparatus
JP2011245472A (en) Device and method for nitrogen substitution type deoxygenation
JP2006086014A (en) Fuel cell system
JP6391867B1 (en) EDM machine
JP2008243596A (en) Fuel cell device
JP2006120532A (en) Fuel cell system
JP2007242381A (en) Fuel cell system
JP2007517375A (en) Freezing-resistant fuel cell power generator with direct contact heat exchanger
JP2004069153A (en) Heat exchanger
JP2006294497A (en) Fuel cell system
JP2006179334A (en) Fuel cell cooling system
JPH09289750A (en) Cooling water feeder
JP3791339B2 (en) Rotating machine and method for detecting abnormality of rotating machine
JP2004139820A (en) Carbon monoxide removal device of fuel cell
JP2006302577A (en) Fuel cell controller and fuel cell control method
JP2785626B2 (en) Metal ion supply method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060616

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090424

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090512

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090710

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: 20090901

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: 20090904

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

Free format text: PAYMENT UNTIL: 20120911

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4373818

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

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

Free format text: PAYMENT UNTIL: 20130911

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250