JPH058782Y2 - - Google Patents
Info
- Publication number
- JPH058782Y2 JPH058782Y2 JP4207187U JP4207187U JPH058782Y2 JP H058782 Y2 JPH058782 Y2 JP H058782Y2 JP 4207187 U JP4207187 U JP 4207187U JP 4207187 U JP4207187 U JP 4207187U JP H058782 Y2 JPH058782 Y2 JP H058782Y2
- Authority
- JP
- Japan
- Prior art keywords
- cooler
- cooling water
- cooling
- conductivity
- switching valve
- 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
Links
- 239000000498 cooling water Substances 0.000 claims description 55
- 238000001816 cooling Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000012809 cooling fluid Substances 0.000 claims 2
- 239000000110 cooling liquid Substances 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 description 7
- 238000005342 ion exchange Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
本発明は、回転電機等の発熱部を有する電気機
器の冷却装置に係り、特にタービン発電機のよう
に固定子巻線の内部に冷却水を循環する冷却装置
の改良に関する。[Detailed Description of the Invention] [Purpose of the Invention] (Industrial Application Field) The present invention relates to a cooling device for electrical equipment having a heat generating part such as a rotating electric machine, and in particular, a cooling device for an electric equipment having a heat generating part such as a rotating electric machine. This invention relates to an improvement in a cooling device that circulates cooling water inside a refrigerator.
（従来の技術）
一般にタービン発電機のような大容量回転電機
に於いては、その大電流により発生するジユール
熱のため回転電機全体の温度上昇を来たし、種々
の悪影響を及ぼす。そこで回転電機の温度上昇を
防止するための冷却装置が種々考案されている。
従来大容量タービン発電機は、発熱部である固定
子巻線に冷却水を循環させて直接冷却する方式が
とられている。(Prior Art) Generally, in a large-capacity rotating electrical machine such as a turbine generator, the temperature of the entire rotating electrical machine increases due to the heat generated by the large current, which has various adverse effects. Therefore, various cooling devices have been devised to prevent the temperature of rotating electric machines from rising.
Conventionally, large-capacity turbine generators employ a method in which cooling water is circulated through the stator winding, which is a heat generating part, to directly cool the stator winding.
第２図は、このように固定子巻線を冷却するタ
ービン発電機冷却装置の系統の一例を示す。この
図に於いて、貯水槽３に貯えられた冷却水は、冷
却水ポンプ４によつて圧送されフイルター５を介
して圧力調整弁６により所定の流量に調整されて
回転電機１に至り、発熱部である固定子巻線を冷
却し高温となつた冷却水をクーラー２により所定
の温度に冷却し貯水槽３に戻るという循環回路に
なつている。 FIG. 2 shows an example of a system of a turbine generator cooling device that cools the stator windings in this manner. In this figure, cooling water stored in a water storage tank 3 is pumped by a cooling water pump 4, passes through a filter 5, is regulated to a predetermined flow rate by a pressure regulating valve 6, and reaches the rotating electric machine 1, where it generates heat. The cooling water that cools the stator windings, which are parts of the stator windings, reaches a high temperature, is cooled to a predetermined temperature by a cooler 2, and is then returned to a water storage tank 3.
この様に、回転電機の発熱体内に直接冷却水を
導入して冷却を行なうものにあつては、電気的絶
縁性を確保するため、高純度の冷却水が要求され
るため、通水路から冷却水中に溶出する不純物を
除去し冷却水の純度を維持するためのイオン交換
塔７が設けられている。この場合、冷却水を全量
イオン交換塔７に通さなくても純度は維持出来る
ことから主回路から冷却水の一部を分岐し絞り弁
８により流量を調整してイオン交換塔７に通水
し、浄化を行つた後、貯水槽に戻す純度維持回路
を主要構成部分としている。 In this way, when cooling is performed by directly introducing cooling water into the heating element of a rotating electric machine, high purity cooling water is required to ensure electrical insulation. An ion exchange tower 7 is provided to remove impurities eluted into the water and maintain the purity of the cooling water. In this case, since the purity can be maintained even if the entire amount of cooling water does not pass through the ion exchange tower 7, a part of the cooling water is branched from the main circuit and the flow rate is adjusted by the throttle valve 8, and the water is passed through the ion exchange tower 7. The main component is a purity maintenance circuit that returns the water to the storage tank after purification.
（考案が解決しようとする問題点）
この従来の冷却水供給系統に於いては、回転電
機の発熱部である固定子巻線を冷却した後の冷却
水は、高温となる為、この高温から冷却水ポンプ
４やフイルター５等を保護する目的で循環冷却水
のクーラーは、前記冷却水ポンプ４の上流側に配
置すると同時に冷却装置をコンパクトにするため
貯水槽３とクーラー２を一体にした構造としてい
る。(Problem to be solved by the invention) In this conventional cooling water supply system, the cooling water after cooling the stator winding, which is the heat generating part of the rotating electric machine, becomes high temperature. A circulating cooling water cooler for the purpose of protecting the cooling water pump 4, filter 5, etc. is placed upstream of the cooling water pump 4, and at the same time, the water storage tank 3 and the cooler 2 are integrated to make the cooling device compact. It is said that
しかしながらクーラー２で所定の温度に冷却さ
れた循環冷却水の圧力は、貯水槽３に貯留される
と大気圧となり、一方循環冷却水を冷却するため
の二次冷却水は、通常３〜６Kg／cm2の圧力を有し
ており万一クーラーの冷却管等が腐食や潰食によ
つて損傷した場合二次冷却水が循環冷却水側に漏
洩することになる。 However, the pressure of the circulating cooling water cooled to a predetermined temperature by the cooler 2 becomes atmospheric pressure when stored in the water storage tank 3, while the pressure of the secondary cooling water for cooling the circulating cooling water is usually 3 to 6 kg/ It has a pressure of cm 2 , so if the cooling pipes of the cooler are damaged due to corrosion or erosion, the secondary cooling water will leak to the circulating cooling water side.
つまり循環冷却水は、前述の如く電気的絶縁性
を確保するため導電率1μs／cm2以下の純水であり、
一方、この循環冷却水を冷却する二次冷却水は通
常淡水でありしかもクーラーや冷却水配管の腐食
を抑える為に亜硝酸ソーダ等の腐食抑制剤を添加
している。そのため二次冷却水の導電率は200〜
300μs／cm2と200〜300倍も高くなつている。 In other words, the circulating cooling water is pure water with a conductivity of 1 μs/cm 2 or less to ensure electrical insulation as described above.
On the other hand, the secondary cooling water that cools this circulating cooling water is usually fresh water, and a corrosion inhibitor such as sodium nitrite is added to prevent corrosion of the cooler and cooling water piping. Therefore, the conductivity of the secondary cooling water is 200~
It is 200 to 300 times higher at 300 μs/cm 2 .
従つて、二次冷却水が漏洩した場合、循環冷却
水の導電度が上昇し絶縁性が低下する為、回転電
機を停止させるか又は、冷却を必要としない程度
まで負荷を下げる等、回転電機の運転に支障を来
たす欠点があつた。 Therefore, if secondary cooling water leaks, the conductivity of the circulating cooling water will increase and the insulation will decrease. There was a defect that interfered with driving.
本考案の目的とするところは、上記不具合を防
止するために、クーラーの異常を早期に検出し速
やかに予備機に切替えることにより電気機器の安
定した運転を確保出来る信頼性の高い冷却装置を
提供することにある。 The purpose of this invention is to provide a highly reliable cooling system that can ensure stable operation of electrical equipment by detecting abnormalities in the cooler at an early stage and quickly switching to a standby unit in order to prevent the above-mentioned malfunctions. It's about doing.
（問題点を解決するための手段）
本考案による電気機器の冷却装置は、第１図に
示す如く、常用クーラーと予備クーラー、これら
のクーラーへの流路を変える各切替弁９、クーラ
ー入口側の冷却水の純度を検出する導電率センサ
ー１０とクーラー出口側の冷却水の純度を検出す
る導電率センサー１１、及びこれらの純度を比較
し各切替弁９を制御するコントローラー１４を備
えた構成とする。
(Means for Solving the Problems) As shown in Fig. 1, the cooling device for electrical equipment according to the present invention includes a regular cooler, a standby cooler, each switching valve 9 that changes the flow path to these coolers, and the cooler inlet side. A configuration including a conductivity sensor 10 for detecting the purity of cooling water on the cooler outlet side, a conductivity sensor 11 for detecting the purity of the cooling water on the outlet side of the cooler, and a controller 14 for comparing these purities and controlling each switching valve 9. do.
（作用）
運転中に於いて、導電率センサー１０でクーラ
ーの入口側の純度を検出し、導電率センサー１１
ではクーラーの出口側の純度を検出している。そ
してコントローラー１４では常時導電率センサー
１０及び１１で検出した純度の差を比較演算して
おり、万一二次冷却水が漏洩して、循環冷却水の
導電率にあらかじめ設定した値以上の差が生じる
か又はあらかじめ設定した以上の導電率になる
と、コントローラー１４からの信号で各切替弁９
が動作し予備クーラーに切替わる。(Function) During operation, the conductivity sensor 10 detects the purity of the inlet side of the cooler, and the conductivity sensor 11
In this case, the purity of the outlet side of the cooler is detected. The controller 14 constantly compares and calculates the difference in purity detected by the conductivity sensors 10 and 11, and in the unlikely event that the secondary cooling water leaks, the difference in conductivity of the circulating cooling water exceeds a preset value. When the conductivity occurs or the conductivity exceeds a preset value, each switching valve 9 is activated by a signal from the controller 14.
operates and switches to the backup cooler.
（実施例）
以下に本考案の一実施例を図面により説明す
る。第１図に於いて、１は、回転電機であつて、
この回転電機の発熱部に対する冷却水供給系統
は、クーラー２、貯水槽３、冷却水ポンプ４、フ
イルター５、及び圧力調整弁６と冷却水の純度を
検出する導電率センサー１０，１１、クーラーを
切替るための入口側と出口側の切替弁９を主構成
部分とする主回路部分と、イオン交換塔７と絞り
弁８から成る純度維持回路及び検出した導電率の
比較演算と各切替弁に信号を送り動作させる為の
コントローラー１４の制御部分より構成されてい
る。(Example) An example of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a rotating electric machine,
The cooling water supply system for the heat generating part of this rotating electric machine includes a cooler 2, a water storage tank 3, a cooling water pump 4, a filter 5, a pressure regulating valve 6, conductivity sensors 10 and 11 that detect the purity of the cooling water, and a cooler. A main circuit section mainly consisting of switching valves 9 on the inlet side and outlet side for switching, a purity maintenance circuit consisting of an ion exchange column 7 and a throttle valve 8, and a comparison calculation of detected conductivity and each switching valve. It consists of a control section of a controller 14 for sending signals and operating.
貯水槽３に貯えられた循環冷却水は、冷却水ポ
ンプ４により圧送されフイルター５を介して圧力
調整弁６により所定の流量に調整されて回転電機
１に至り、発熱部である固定子巻線を冷却し高温
となつた冷却水をクーラー２により冷却して貯水
槽３に戻るという循環回路になつている。 The circulating cooling water stored in the water storage tank 3 is pumped by a cooling water pump 4, passed through a filter 5, and adjusted to a predetermined flow rate by a pressure regulating valve 6, and reaches the rotating electric machine 1, where it is delivered to the stator winding, which is the heat generating part. The cooling water is cooled to a high temperature by the cooler 2, and then returned to the water storage tank 3, forming a circulation circuit.
一方冷却水ポンプ４により圧送される循環冷却
水の一部は主回路より分岐し、絞り弁８により流
量調整した後イオン交換塔７へ導かれ、ここで冷
却水を浄化したのち貯水槽へ戻る回路を形成して
いる。 On the other hand, a part of the circulating cooling water pumped by the cooling water pump 4 is branched from the main circuit, and after its flow rate is adjusted by the throttle valve 8, it is guided to the ion exchange tower 7, where the cooling water is purified and then returned to the water storage tank. forming a circuit.
次に作用について説明する。運転中のクーラー
入口側の循環冷却水の導電率を導電率センサー１
０で検出し、この導電率を導電率伝送器１２でア
ナログ信号（４〜20mADC）に変換しコントロ
ーラー１４に入力信号として送る。 Next, the effect will be explained. Conductivity sensor 1 measures the conductivity of the circulating cooling water on the inlet side of the cooler during operation.
0, and this conductivity is converted into an analog signal (4 to 20 mADC) by the conductivity transmitter 12 and sent to the controller 14 as an input signal.
同様にクーラー出口側の循環冷却水の導電率を
導電率センサー１１で検出し導電率伝送器１３を
介してコントローラー１４に入力信号として送
る。 Similarly, the conductivity of the circulating cooling water on the outlet side of the cooler is detected by a conductivity sensor 11 and sent as an input signal to the controller 14 via a conductivity transmitter 13.
そしてこのコントローラー１４は、クーラー入
口側と出口側から送られた信号の絶対値と差をあ
らかじめ設定された値と比較演算し、もし検出し
た値が設定値より大きい場合はコントローラー１
４から各切替弁９に信号を送り各切替弁９を動作
させて冷却水の流路を切替ることによりクーラー
を切替える。 Then, this controller 14 compares and calculates the absolute value and difference of the signals sent from the cooler inlet side and the outlet side with a preset value, and if the detected value is larger than the set value, the controller 1
The cooler is switched by sending a signal from 4 to each switching valve 9 and operating each switching valve 9 to switch the cooling water flow path.
すなわち、冷却管が腐食等によつて損傷し、二
次冷却水が漏洩するとクーラー出口側の循環冷却
水の導電率が上昇し入口側の導電率との差が広が
り異常を検知することが出来る。又、微少な漏洩
でクーラー出入口の差が設定値以下であつても二
次冷却水の導電率は200〜300倍も高いため、循環
冷却水の導電率の絶対値が上昇するので異常を検
知出来る。 In other words, if the cooling pipe is damaged due to corrosion or the like and secondary cooling water leaks, the conductivity of the circulating cooling water on the outlet side of the cooler will increase, and the difference between the conductivity on the inlet side will widen and an abnormality can be detected. . In addition, even if the difference between the entrance and exit of the cooler is less than the set value due to a small leak, the conductivity of the secondary cooling water is 200 to 300 times higher, so the absolute value of the conductivity of the circulating cooling water increases, so an abnormality can be detected. I can do it.
以上のようにクーラーの異常（漏洩）を早期に
検知することが出来クーラーを切替える事が出来
る為、回転電機の負荷を下げたり停止することな
く安定した運転を保つことが可能になる。 As described above, since abnormality (leakage) in the cooler can be detected early and the cooler can be switched, stable operation can be maintained without reducing the load on the rotating electric machine or stopping it.
しかも二次冷却水の漏洩を生じたクーラーはそ
の循環冷却水の出入口共しや断されるので、循環
冷却水が過度に汚染されることなく、また、冷却
装置の運転中に故障したクーラーを修理すること
も可能となる。 In addition, since both the inlet and outlet of the circulating cooling water of a cooler that has leaked secondary cooling water are cut off, the circulating cooling water is not excessively contaminated, and if a cooler malfunctions while the cooling system is in operation, it can be removed. It is also possible to repair it.
なお、本考案は、回転電機のほか、変圧器、強
磁場発生用の大電流コイル、交直変換装置等の電
気機器の冷却に用いることができる。 In addition to rotating electric machines, the present invention can be used to cool electrical equipment such as transformers, large current coils for generating strong magnetic fields, and AC/DC converters.
以上述べたように本考案によれば、腐食等の要
因によつてクーラーの二次冷却水が循環冷却水中
へ漏洩しても早期に検出することが出来、しかも
自動的に予備クーラーに切替えることが可能とな
るため、電気機器の負荷を変動させることなく安
定した運転が期待出来る。
As described above, according to the present invention, even if the secondary cooling water of the cooler leaks into the circulating cooling water due to factors such as corrosion, it can be detected at an early stage, and it can be automatically switched to the backup cooler. This makes it possible to expect stable operation without changing the load on electrical equipment.
第１図は本考案の一実施例を示すタービン発電
機の冷却装置の系統図、第２図は従来のタービン
発電機の冷却装置を示す系統図である。
１……回転電機、２……クーラー、３……貯水
槽、４……冷却水ポンプ、５……フイルター、６
……圧力調整弁、７……イオン交換塔、８……絞
り弁、９……切替弁、１０……導電率センサー、
１１……導電率センサー、１２……導電率伝送
器、１３……導電率伝送器、１４……コントロー
ラー。
FIG. 1 is a system diagram of a cooling system for a turbine generator showing an embodiment of the present invention, and FIG. 2 is a system diagram showing a conventional cooling system for a turbine generator. 1... Rotating electric machine, 2... Cooler, 3... Water tank, 4... Cooling water pump, 5... Filter, 6
...Pressure regulating valve, 7...Ion exchange tower, 8...Throttle valve, 9...Switching valve, 10...Conductivity sensor,
11... Conductivity sensor, 12... Conductivity transmitter, 13... Conductivity transmitter, 14... Controller.
Claims (1)
して液体冷却する循環流路の途中に、冷却液を二
次冷却水によつて冷却するクーラーを設けた冷却
装置において、クーラーは常用クーラーと予備ク
ーラーを備え、常用クーラーと予備クーラーの前
後の冷却液流路を各切替弁を介して接続し、各切
替弁の前後において冷却液の導電率を検出する各
センサーを設け、各センサーの検出結果にもとづ
いて各切替弁を動作させるコントローラを設け、
常用クーラーにおける二次冷却水の漏洩を検知し
て自動的に予備クーラーに切替えるようにしたこ
とを特徴とする電気機器の冷却装置。 In a cooling system that is equipped with a cooler that cools the cooling liquid with secondary cooling water in the middle of a circulation path that supplies cooling liquid made of pure water to the heat generating parts of electrical equipment and cools the liquid, the cooler is a regular cooler. The cooling fluid flow paths before and after the regular cooler and the backup cooler are connected via each switching valve, and each sensor is installed to detect the conductivity of the cooling fluid before and after each switching valve. A controller is installed to operate each switching valve based on the detection results.
A cooling device for electrical equipment characterized by detecting leakage of secondary cooling water from a regular cooler and automatically switching to a backup cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4207187U JPH058782Y2 (en) | 1987-03-24 | 1987-03-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4207187U JPH058782Y2 (en) | 1987-03-24 | 1987-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63153762U JPS63153762U (en) | 1988-10-07 |
| JPH058782Y2 true JPH058782Y2 (en) | 1993-03-04 |
Family
ID=30857648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4207187U Expired - Lifetime JPH058782Y2 (en) | 1987-03-24 | 1987-03-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH058782Y2 (en) |
-
1987
- 1987-03-24 JP JP4207187U patent/JPH058782Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63153762U (en) | 1988-10-07 |
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