JPS598310A - Cooling device for oil-immersed electrical machinery and apparatus - Google Patents

Cooling device for oil-immersed electrical machinery and apparatus

Info

Publication number
JPS598310A
JPS598310A JP11905282A JP11905282A JPS598310A JP S598310 A JPS598310 A JP S598310A JP 11905282 A JP11905282 A JP 11905282A JP 11905282 A JP11905282 A JP 11905282A JP S598310 A JPS598310 A JP S598310A
Authority
JP
Japan
Prior art keywords
oil
cooling device
machinery
pump
electrical equipment
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
Application number
JP11905282A
Other languages
Japanese (ja)
Inventor
Susumu Kawanaka
川中　進
Kazuki Moritsu
森津　一樹
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 JP11905282A priority Critical patent/JPS598310A/en
Publication of JPS598310A publication Critical patent/JPS598310A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling

Abstract

PURPOSE:To prevent the application of excessive oil pressure to the oil immersed electrical machinery and apparatus by directly coupling an oil circulating pump and a decompression mechanism, converting the potential energy of oil into pump action and absorbing oil pressure. CONSTITUTION:Motor valves 11, 12 are closed during the suspension of the operation of the machinery and apparatus, and oil pressure applied to an oil-immersed electrical machinery and apparatus proper 1 is the static pressure of the oil pressure of a conservator 1a. When starting operation, an auxiliary pump 10 for circulating oil is started, and the motor valves 11, 12 are opened slowly. When oil begins to circulate, the decompression mechanism 9 and the oil circulating pump 8 are operated, and brought to a normal operation state. Oil pressure applied to the proper 1 is the same as one during the suspension of the machinery and apparatus at that time. When stopping the machinery and apparatus being operated, motor valves 6, 7 are closed slowly, the oil circulating pump 8 and the decompression mechanism 9 stop automatically when the circulation of oil stops, and a voluminal change of oil with a temperature change is absorbed by each conservator 1a, 3a when the auxiliary pump 10 is stopped and the machinery and apparatus is stopped.

Description

【発明の詳細な説明】 この発明は、油入電気機器用冷却装置に関するものであ
り、さらに詳しくいうと、都心の地下変電所など圧おい
て、地下に油入電気機器を設置し、地上またはビルの屋
上などに冷却装置を設置し、油を強制循環させる方式に
かかる油入電気機器用冷却装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling system for oil-filled electrical equipment.More specifically, the present invention relates to a cooling system for oil-filled electrical equipment, and more specifically, a cooling system for oil-filled electrical equipment that is installed underground at a pressure such as an underground substation in a city center, and This invention relates to a cooling system for oil-filled electrical equipment that uses a cooling system installed on the roof of a building to force oil circulation.

第１図は従来のこの種の装置を示し、地下に設置された
油入電気機器／と同レベルに油−水の熱交換器コを設置
し、地上またはビルの屋上忙設置した冷却塔３により水
を冷却する間接冷却方式を採用していた。Ｖは油ポンプ
、！は水ポンプ、６゜７はそねぞれ油配管、水配管であ
る。Figure 1 shows a conventional device of this kind, in which an oil-water heat exchanger is installed at the same level as oil-filled electrical equipment installed underground, and a cooling tower installed above ground or on the roof of a building. An indirect cooling method was used to cool the water. V is for oil pump! is the water pump, and 6°7 is the oil piping and water piping, respectively.

かような従来の装置は、油入電気機器に過大な油圧が加
わらないよう、水による間接冷却としていたため、以上
の欠点があった。Such conventional devices had the above-mentioned drawbacks because they used indirect cooling with water to prevent excessive oil pressure from being applied to oil-filled electrical equipment.

（イ）熱交換器コで油を冷却し、さらに冷却塔３で水を
冷却する二重冷却系であるため、高価となる。(a) It is expensive because it is a dual cooling system in which the oil is cooled by the heat exchanger 3 and the water is further cooled by the cooling tower 3.

（ロ）冷却装置の設置スペースが、地下、地上（屋上）
に必要となる。(b) The installation space for the cooling device is underground or above ground (rooftop).
is required.

（）→　冷却装置の据付工事費が多額になる。() → Installation costs for the cooling system will be large.

に）冷却媒体として水を多量に使用するため、保守面で
問題が多い。2) Since large amounts of water are used as a cooling medium, there are many maintenance problems.

この発明は、以上の事情に鑑みてなされたもので、水な
どの中間冷却媒体の使用を排除し、冷却装置を油入電気
機器より高い位置に設置しながら油入電気機器に過大な
油圧が加わらない構成とし、従来の欠点を解消した油入
電気機器用冷却装置を提供することを目的とするもので
ある。This invention was made in view of the above circumstances, and eliminates the use of intermediate cooling media such as water, and installs the cooling device at a higher position than the oil-filled electrical equipment, while preventing excessive oil pressure from being applied to the oil-filled electrical equipment. It is an object of the present invention to provide a cooling device for oil-filled electrical equipment which has a configuration that does not require the addition of oil and eliminates the drawbacks of the conventional art.

また、この発明の目的は、油循環ポンプと減圧機構を直
結して油の位置エネルギーをポンプ作用に変換すること
により油圧を吸収するように構成した油入電気機器用冷
却装置を提供することである。Another object of the present invention is to provide a cooling device for oil-filled electrical equipment that is configured to absorb hydraulic pressure by directly connecting an oil circulation pump and a pressure reducing mechanism to convert the potential energy of oil into pumping action. be.

以下、この発明を第一図の一実施例について説明する。The present invention will be described below with reference to an embodiment shown in FIG.

図において、コンサベータ／ａ、放圧管／ｂを備えた油
入電気機器の本体／は地下に設置されており、コンサベ
ータ３ａを備えた送油風冷式寸たは蒸発式の冷却装置３
Ａは地上ないし屋上に設置されている。冷却装置３Ａへ
の油の往路。In the figure, the main body of oil-filled electrical equipment equipped with a conservator /a and a pressure relief pipe /b is installed underground, and an oil-feed air-cooled or evaporative cooling device 3 equipped with a conservator 3a.
A is installed on the ground or on the roof. Outbound path of oil to cooling device 3A.

帰路にそれぞれ挿入され地下忙設置された油循環ポンプ
ｔと減圧機＄ｑとは同軸に直結されている。An oil circulation pump t and a pressure reducer $q, each inserted in the return route and installed underground, are directly connected coaxially.

減圧機構９は油の位置エネルギーを吸収して回転力に変
換する機能を有するものである。本体／と油循環ポンプ
ざの間には油循環用補助ポンプ１０が接続さＪｌ、この
油循環用補助ポンプｌθと連動する電動パルプ／／、／
２がそれぞれ油循環ポンプざの入側、減圧機構りの入側
に介挿されている。The pressure reducing mechanism 9 has a function of absorbing the potential energy of oil and converting it into rotational force. An auxiliary oil circulation pump 10 is connected between the main body / and the oil circulation pump.
2 are inserted on the inlet side of the oil circulation pump and on the inlet side of the pressure reducing mechanism, respectively.

／Ｊは油配管である。/J is oil piping.

次に、動作について説明する。機器の運転停止中は、電
動バルブ／／、ｌコは閉止しておりく油入電気機器の本
体ｌに加わる油圧はコンサベータ／ａの油面の静圧であ
る。運転開始に際しては、寸ず、油循環用補助ポンプ１
０を起動し、続いて電動パルプ／／、／２を徐々に開放
する。油の循環が始まると、減圧機構デと油循環ポンプ
ｇが作動し、正規の運転状態となる。このとき、第２図
に示す油回路各部へ〜Ｊの圧力は、コンサベータ／ａ、
、７ａの油面高さをｂｌ＊ｂ２、油の比重量をボ γ、速度をＶ、油循環ポンプｇの人、ヂ側の体積要素ｋ
　Ｓ　／　Ｉ　Ｓコとして、第３図に示すようになり、
本体ｌに加わる油圧はγｈ、となり、機器停止中に　　
　□おけると同一となる。運転中の機器を停止させる場
合は、１ず、電動パルプル、７を徐々に閉じ、油の循環
が止まると、油循環ポンプｇと減圧機構デは自動的に停
止し、その後油循環用補助ポンプ／θを停止して機器を
完全に停止ざぜる。このときの油回路各部Ａ　−Ｊの油
圧は第Ｖ図のごとくにナリ、油は電動パルプ／／、７．
２によって二重され、機器停止中はそねぞねのコンサベ
ータ／ａ。Next, the operation will be explained. When the equipment is stopped, the electric valves // and l are closed, and the hydraulic pressure applied to the main body l of the oil-filled electrical equipment is the static pressure of the oil level in the conservator /a. Before starting operation, first install the auxiliary oil circulation pump 1.
0, then gradually open electric pulp //, /2. When the oil circulation starts, the pressure reducing mechanism D and the oil circulation pump G are activated, and the normal operating state is established. At this time, the pressure of ~J to each part of the oil circuit shown in Fig. 2 is conservator/a,
, the oil level height of 7a is bl*b2, the specific weight of the oil is γ, the speed is V, the volume element k on the side of the oil circulation pump g,
As an S/IS company, as shown in Figure 3,
The hydraulic pressure applied to the main body l is γh, and when the equipment is stopped,
□If it is placed, it will be the same. To stop the equipment in operation, first, gradually close the electric pulp pump 7, and when the oil circulation stops, the oil circulation pump g and pressure reducing mechanism de will automatically stop, and then the oil circulation auxiliary pump /θ and completely stop the equipment. At this time, the oil pressure of each part of the oil circuit A-J is as shown in Figure V, and the oil is electric pulp //, 7.
It is doubled by 2, and when the equipment is stopped, it is a conservator/a.

３ａにより温度変化に伴う油の体積変化が吸収される。3a absorbs changes in oil volume due to temperature changes.

かようにして、機器の停止中、運転中を問わず、本体７
にはコンサベータ／ａの油面のヘッド圧以上の油圧が加
わるとを防止し、同時に減圧機構ｔＫよって位置エネル
ギーを回転エネルギーに変換して油循環ポンプの動力と
して利用するので、油循環ポンプの所要動力を著しく軽
減することができる。In this way, the main body 7 can be
This prevents the application of hydraulic pressure higher than the head pressure of the oil surface of the conservator/a, and at the same time, the pressure reducing mechanism tK converts potential energy into rotational energy and uses it as power for the oil circulation pump. The required power can be significantly reduced.

従って、この発明によねば次のような効果がある。Therefore, the present invention has the following effects.

（い）冷却装置の構成が簡略化さね、設備費が大幅に低
減される。油入電気様器の熱損失は最終的には大気に放
熱されるが、従来の冷却方式では油−水（熱交換器）水
−大気（冷却塔）の如く全熱量を放熱する装置が二重と
なり−、しかも油−大気の温度差を２分してそわぞれの
冷却装置が受は持つため　油−大気へ直接放熱する場合
に比べ、ｖ倍の容量をもつ冷却装置となっていた。(b) The configuration of the cooling device is simplified, and equipment costs are significantly reduced. The heat loss of an oil-filled electric converter is ultimately radiated to the atmosphere, but in conventional cooling systems, there are two devices that radiate the total amount of heat, such as oil-water (heat exchanger) and water-atmosphere (cooling tower). Moreover, each cooling device has a receiver that divides the temperature difference between the oil and the atmosphere into two, resulting in a cooling device with v times the capacity compared to the case where heat is radiated directly to the oil and atmosphere. .

（ろ）冷却装置の据付面積が小さくなり、据付工事が簡
略化される。油入電気機器と同レベルの冷却装置が不要
となり、地下室床面の据付スペースが省略で六ると共に
地下室内での据付工事が大幅に簡略化される。(B) The installation area of the cooling device is reduced, and the installation work is simplified. It eliminates the need for a cooling device similar to that of oil-filled electrical equipment, saves installation space on the basement floor, and greatly simplifies installation work inside the basement.

（は）補修の簡略化が図れる。機器の構成が簡略化され
るので補修も簡略化される。(a) Repairs can be simplified. Since the configuration of the equipment is simplified, repairs are also simplified.

（［）ランニングコストが低減される。油循環用ポンプ
の動力として位置エネルギーを転用するので、所要動力
が軽減されるなどランニングコストが低減される。([) Running costs are reduced. Since potential energy is diverted to power the oil circulation pump, running costs are reduced, such as the required power being reduced.

【図面の簡単な説明】[Brief explanation of drawings]

？Ｐ、１図は従来のものの構成を示す配置図、第一図は
この発明の一実施例の構成を示す配置図、第３図は同じ
く運転中の油回路各部の油圧分布を示す線図、第ｖ図は
同じく停止中の油回路各部の油圧分布を示す線図である
。 ｌ・・油入電気機器の本体、／ａ・・コンサベータ、３
Ａ・・冷却装置、３ａ・・コンサベータ、ざ・・油循環
ポンプ、り・・減圧機構、１０・・油循環用補助ポンプ
、／／、／２・・電動バルブ、／３・・油配管。 なお、各図中、同一符号は同−又は相当部分を示す。 代理人　　葛　　野　　信　　− 焔１図 ↑ 第３図 手続補正書「自発」 昭和５８年８　、．１２　　Ｆ３ ２、発明の名称 油入電気機器用冷却装置 ：３．補正をする者 代表者片山仁へ部 ４代理人 本　補正の対象 （１）　　明細書の特許請求の範囲の欄（２）　　明細
書の発明の詳細な説明の欄（３）　　　図　　　面 ム　補正の内容 （１）特許請求の範囲を別紙のとおり補正する。 （２）　　明細書第コ頁第１／行 「以上」を「以下」と補正する。 （３）　　同第３頁第７行、第ｉｑ行、第５頁第１コ行
、第６頁第１１Ｉ行 「エネルキー」を「エネルギー」と補正する。 （４）　　同第９頁第７６行−第１７行「速度を・・・
・・第３図に」を「各部の圧力損失を”１　　’ｅ　ｓ
２ｔ　ｓ８　とすると、概略第３図に」正する。 特許請求の範囲 （１）　　油入電気機器の本体と、この本体よりも高い
位置に設置された冷却装置と、前記本体とほぼ同レベル
に設置され前記本体と前記冷却装置間に接続された油配
管の往路、帰路にそれぞれ介挿され互いに機械的に直結
された油循環ポンプおよび減圧機構と、前記油循環ポン
プと前記減圧機、構それぞれの油流入側に設けられた電
動バルブを備えてなることを特徴とする油入電気機器用
冷却装置。 （２）　　電動バルブと連動する油循環用補助ポンプを
備えた特許請求の範囲第１項記載の油入電気機器用冷却
装置。? Figure 1 is a layout diagram showing the configuration of a conventional one, Figure 1 is a layout diagram showing the configuration of an embodiment of the present invention, and Figure 3 is a diagram showing the hydraulic pressure distribution of each part of the oil circuit during operation. FIG. l...Main body of oil-filled electrical equipment, /a...Conservator, 3
A...Cooling device, 3a...Conservator,...Oil circulation pump, Ri...Pressure reduction mechanism, 10...Auxiliary pump for oil circulation, //, /2...Electric valve, /3...Oil piping . In each figure, the same reference numerals indicate the same or corresponding parts. Agent Makoto Kuzuno - Figure 1 ↑ Figure 3 Procedural Amendment “Spontaneous” August 1980, . 12 F3 2. Name of invention Cooling device for oil-filled electrical equipment: 3. To the representative of the person making the amendment: Hitoshi Katayama Department 4: Agent Subject of the amendment (1) Scope of claims in the specification (2) Detailed explanation of the invention in the specification (3) Drawings and drawings of the amendment Contents (1) The scope of claims is amended as shown in the attached sheet. (2) On page 1, line 1 of the specification, "more than" is amended to "less than or equal to". (3) Correct "Enerky" to "Energy" on page 3, line 7, line iq, page 5, line 1, and page 6, line 11I. (4) Page 9, lines 76-17 “Speed...
...In Figure 3, the pressure loss at each part is 1 'e s.
2t s8, it is roughly shown in Fig. 3. Claims (1) A main body of an oil-filled electrical device, a cooling device installed at a higher position than the main body, and an oil-filled electric device installed at approximately the same level as the main body and connected between the main body and the cooling device. An oil circulation pump and a pressure reducing mechanism are inserted in the outgoing and return routes of piping and are mechanically directly connected to each other, and an electric valve is provided on the oil inflow side of each of the oil circulation pump, the pressure reducing machine, and the structure. A cooling device for oil-filled electrical equipment characterized by: (2) The cooling device for oil-filled electrical equipment according to claim 1, comprising an auxiliary pump for oil circulation that operates in conjunction with an electric valve.

Claims (2)

【特許請求の範囲】[Claims] （１）　　油入電気機器の本体と、この本体よりも高い
位置に設置された冷却装置と、前記本体とほぼ同レベル
に設置さね前記本体と前記冷却装置間に接続された油配
管の往路、帰路にそれぞれ介挿され互いに機械的に直結
された油循環ポンプおよび減圧機構と、前記油循環ポン
プと前記減圧機構それぞれの油流入側に設けられた電動
パルプを備えてなることを特徴とする油入電気機器用冷
却装置。(1) A main body of oil-filled electrical equipment, a cooling device installed at a higher position than the main body, and an outgoing route of oil piping connected between the main body and the cooling device installed at approximately the same level as the main body. , an oil circulation pump and a pressure reduction mechanism inserted in the return path and mechanically directly connected to each other, and an electric pulp provided on the oil inflow side of each of the oil circulation pump and the pressure reduction mechanism. Cooling device for oil-filled electrical equipment. （２）！動バルブが連動する油循環用補助ポンプを備え
た特許請求の範囲第７項記載の油入電気機器用冷却装置
。(2)! 8. The cooling device for oil-filled electrical equipment according to claim 7, comprising an auxiliary pump for oil circulation that is interlocked with a hydraulic valve.
JP11905282A 1982-07-06 1982-07-06 Cooling device for oil-immersed electrical machinery and apparatus Pending JPS598310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11905282A JPS598310A (en) 1982-07-06 1982-07-06 Cooling device for oil-immersed electrical machinery and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11905282A JPS598310A (en) 1982-07-06 1982-07-06 Cooling device for oil-immersed electrical machinery and apparatus

Publications (1)

Publication Number Publication Date
JPS598310A true JPS598310A (en) 1984-01-17

Family

ID=14751709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11905282A Pending JPS598310A (en) 1982-07-06 1982-07-06 Cooling device for oil-immersed electrical machinery and apparatus

Country Status (1)

Country Link
JP (1) JPS598310A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6268691B1 (en) 1998-08-26 2001-07-31 Kabushiki Kaisha Toshiba Red emitting phosphor for cathode ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6268691B1 (en) 1998-08-26 2001-07-31 Kabushiki Kaisha Toshiba Red emitting phosphor for cathode ray tube

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