JPS58102502A - Liquid resistor - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は電極間に発生するジュール熱をヒートパイプに
よシ絶縁筒の外部へ放熱するようにした液体抵抗器に関
するものであ゛る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid resistor in which Joule heat generated between electrodes is radiated to the outside of an insulating cylinder using a heat pipe.

発明の技術背景 液体抵抗器は電解液を収納したタンク内に固定●可動電
極を対向配置させ両ｔ＠間の対向きよりを変えることに
よシ抵抗を変化させる４ので、主に誘導電動機の２次抵
抗制御用として用いられる。Technical Background of the Invention A liquid resistor is fixed in a tank containing an electrolytic solution.The resistance can be changed by arranging movable electrodes facing each other and changing the direction of the two t@, so it is mainly used for induction motors. Used for secondary resistance control.

従来の液体抵抗器の構成を縞ｌ図κよシ説明する。タン
クｌの内部には抵抗体となる電解液２を入れ、この電解
液２中に沈めるように相関および接地絶縁をする多相分
の絶縁筒３を並列配置し、各絶縁筒３の内部には、一定
電極４とこれと対向し昇降可能な可動電＆５とが設けて
ある。固定電極イは、絶縁管６によ９表面を絶縁され良
固定四ツド１の下端に固着され、固定レッド１の上端は
、タンクｌの中間に設けた仕切板８に絶縁体９を介して
取付けられ固定電極４をタンクｌ内に支持して―る◇一
方可動電極５Ｆｉ、仕切板Ｉを隔離して貫通する二本の
可動ロンドｌＯに固着され、３相分の可動レッド１０Ｆ
ｉ、電気的な中性点である共通枠ｔｒｖｃＭＲ付けられ
ζ１形結線畜れてーる◇共通枠１１１ｄ、タンクＩの上
部に設けた支持ベースＩｚ上の操作電動機ＺＪＫチェー
ンＩ４を一介して連結されておシ、操作電動機ｌ３の駆
動によ夛共通枠１１、即ち可動電＆５を上下に昇降移動
し固定●可動電極４．５間の対向きよりを変化させて亀
ｐｓ液２の抵抗値を可変するようにしている。The structure of a conventional liquid resistor will be explained using the striped diagram κ. An electrolytic solution 2 serving as a resistor is placed inside the tank l, and multi-phase insulating tubes 3 for correlation and ground insulation are arranged in parallel so as to be submerged in the electrolytic solution 2. is provided with a fixed electrode 4 and a movable electrode &5 that faces it and is movable up and down. The fixed electrode A has its surface insulated by an insulating tube 6 and is fixed to the lower end of a well-fixed four-piece 1, and the upper end of the fixed electrode A is connected to a partition plate 8 provided in the middle of the tank L via an insulator 9. The attached fixed electrode 4 is supported in the tank l. ◇On the other hand, the movable electrode 5Fi is fixed to the two movable rondos lO that separate and penetrate the partition plate I, and the movable red 10F for three phases is attached.
i, A common frame trvcMR, which is an electrical neutral point, is attached and a ζ1 type wire is connected. ◇Common frame 111d, connected via the operating motor ZJK chain I4 on the support base Iz provided at the top of the tank I. Then, by driving the operating motor 13, the common frame 11, that is, the movable electrode 5 is moved up and down and fixed. I am trying to make it variable.

ところで、上記した従来Ｏ液体抵抗器は、固定・可動電
極４．５間の電解液ＺＫは電流が流れるため、発生した
ジュール熱を電極４．５間に介在し喪亀解１１２自体で
吸収嘔せ、ｉＩ＆度上昇した電解液２が上層に流動する
、部ち、自然対流伝熱をさせて自然冷却している。By the way, in the conventional O liquid resistor described above, since a current flows through the electrolyte ZK between the fixed and movable electrodes 4.5, the Joule heat generated is interposed between the electrodes 4.5 and absorbed by the electrolyte 112 itself. The electrolytic solution 2 whose temperature has increased in temperature flows to the upper layer and is naturally cooled by natural convection heat transfer.

背景技術の問題点 しかしこのような伝熱方式は、自然対流によるのみであ
るので電解ｉ［２の攪拌力が弱く、操作電動＠１３の始
動中に生ずるジュール熱を電解ｉ［２の保有液量の一部
でしか吸収できず、電動機１３の始動中に生ずるジュー
ル熱を電解液２の保有液量の一部でしか吸収できず、電
解液２を最高許容温度以下にする大め、タンクＩの容積
を多くするか、吸収可能な熱容量を低減する等して％／
＆た。また、挿作電動機１３を短時間で始動させる用途
にお−ては、膨大なジュール熱が瞬時に生ずる良め、電
極間が急激な温度上昇によって胸部過熱する恐れがあっ
た０更に、電解液１の抵抗率が温度変化によシ急変する
ような、特性を有している“九め、次回の始動までに、
温度上昇した電解液ｌが電極間に介在している場合、始
動特性が変化するような欠点があった。Problems with the Background Art However, since such a heat transfer method relies only on natural convection, the stirring power of the electrolytic i[2 is weak, and the Joule heat generated during the startup of the operating electric motor @13 is transferred to the liquid held in the electrolytic i[2. The Joule heat generated during starting of the electric motor 13 can be absorbed by only a part of the amount of the electrolyte 2, and the tank is large enough to keep the electrolyte 2 below the maximum allowable temperature. %/by increasing the volume of I or reducing the absorbable heat capacity, etc.
&Ta. In addition, in applications where the insertion motor 13 is started in a short time, a huge amount of Joule heat is generated instantaneously, and there is a risk of chest overheating due to a rapid temperature rise between the electrodes. The resistivity of 1 has a characteristic that changes suddenly due to temperature changes.
When the electrolyte solution 1 whose temperature has increased is interposed between the electrodes, there is a drawback that the starting characteristics change.

発明の目的 本発明は以上の欠点を除去して、電極間の電解液中に発
生する熱の冷圧効果を高め、小型で始動特性のよ９液体
抵抗器を得ることを目的とする。OBJECTS OF THE INVENTION The object of the present invention is to eliminate the above-mentioned drawbacks, enhance the cooling effect of the heat generated in the electrolyte between the electrodes, and obtain a liquid resistor that is small in size and has good starting characteristics.

発明の実施例 以下本発明の一実施例を第２図を参照して説明する◇第
１図の従来のものと同一部分は同一符号を付し、その説
明は省略する。ｊ１！２図に示す本発明の液体抵抗器に
おφては、中間部を電気的な絶縁物７２で介した゛ヒー
トパイグｚｚをタンクｌ内の絶縁筒３０側面部に貫通さ
せ、且つ電極移動中の抵抗値変化を阻害しなめように、
　　　゛□電極間と所定の間隔をもつ九位置に固着する
。Embodiment of the Invention An embodiment of the present invention will be described below with reference to FIG. 2. ◇The same parts as in the conventional one shown in FIG. In the liquid resistor of the present invention shown in Figs.j1 and 2, a heat pipe zz with an electrical insulator 72 interposed in the middle is passed through the side surface of the insulating cylinder 30 in the tank l, and the electrode is moved during electrode movement. In order to inhibit the change in resistance value of
゛□Fixed at nine positions with a predetermined distance between the electrodes.

このような構成にすれば、タンクｌ内の電解液ｘＦｉ自
然対流であっても、電１ｋａｍ　ｔｔｒ間の電解ｔ＆ｚ
中に発生したジュール熱を絶縁筒Ｓの周Ｈにある亀＃ｉ
［ＪＫ対してに−）パイプ２２により容易に放熱可能な
良め、タンクｌ内に保有し良し液量を熱吸収に活用でき
、冷却効果が高くなり液体抵抗器の小形化が計れる。ま
た、膨大なジュール熱が瞬時に生じても、応答良く伝熱
し周囲に放熱するので、電極部の局部過熱を防止できる
。一方、ジュール熱の生じた熱量だけ外部へ放熱するた
め、ジュール熱が増減しても、電極間の温度をはぼ一定
にでき、安定し九抵抗値が得られ確実に始動特性を維持
することが可能となる。With such a configuration, even if there is natural convection of the electrolyte xFi in the tank l, the electrolyte t&z between the electric
The Joule heat generated inside the insulating cylinder S is
[For JK] The pipe 22 allows for easy heat dissipation, and the amount of liquid held in the tank 1 can be utilized for heat absorption, increasing the cooling effect and making it possible to downsize the liquid resistor. Further, even if a huge amount of Joule heat is generated instantaneously, the heat is transferred with good response and radiated to the surroundings, so local overheating of the electrode portion can be prevented. On the other hand, since only the amount of heat generated by Joule heat is radiated to the outside, even if Joule heat increases or decreases, the temperature between the electrodes can be kept almost constant, a stable resistance value can be obtained, and starting characteristics can be maintained reliably. becomes possible.

発明の効果 以上のように、本発明で社、電解液を収納したタンク内
に対向配置した電極の周囲を情シまく、絶縁筒、の＠１
ｋＩｓに、中間部を電気的に絶縁したヒートパイプを貫
通させ固着することによって、１１Ｌ極間の電解液中に
発生したジュール熱をヒートパイプを介して容易に放熱
可能であり、総１ｌｌ１４１−をジュール熱の吸収に活
用でき、且つ瞬時に放熱が可能なため、液体抵抗ｔの小
形化を計れるだけでなく、適用拡大できる。また、安定
した抵抗値を帷持できるために始動特性のよ一為精度の
液体抵抗器となシ得る。Effects of the Invention As described above, the present invention provides an insulating tube that protects the surroundings of electrodes placed opposite each other in a tank containing an electrolytic solution.
By penetrating and fixing a heat pipe whose intermediate part is electrically insulated through the kIs, the Joule heat generated in the electrolyte between the 11L electrodes can be easily radiated through the heat pipe, and a total of 1ll141- Since it can be used to absorb Joule heat and instantly dissipate heat, it is possible to not only reduce the liquid resistance t but also expand its application. In addition, since it can maintain a stable resistance value, it can be used as a liquid resistor with better starting characteristics and higher accuracy.

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

謔１図は、従来の液体抵抗器の断面図、第２図は本発明
の一実施例によるヒートパイプを取付けた液体抵抗器を
示す断面Ｖである。 １・・・タンク、２・・・電解液、Ｓ・・・絶紗筒、４
・・・固定電極、５・・・可動ｉ！極、６・・・絶縁管
、７・・・固定−ツド、８・・・仕切板、９・・・絶縁
体、１０・・・可動ロッド、１１・・・共通枠、１１・
・・支持ベース、Ｚ３・・・操作電動機、１４・・・チ
ェーン、２１・・・絶縁物、ｚｚ・・・ヒートパイプ。 出願人代理人　弁理士　鈴　　江　　武　　彦第１図 第２１！！Figure 1 is a cross-sectional view of a conventional liquid resistor, and Figure 2 is a cross-sectional view showing a liquid resistor to which a heat pipe according to an embodiment of the present invention is attached. 1...Tank, 2...Electrolyte, S...Zensa cylinder, 4
...Fixed electrode, 5...Movable i! Pole, 6... Insulating tube, 7... Fixed tube, 8... Partition plate, 9... Insulator, 10... Movable rod, 11... Common frame, 11...
...Support base, Z3...Operation motor, 14...Chain, 21...Insulator, zz...Heat pipe. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 21! !

Claims (1)

【特許請求の範囲】[Claims] 電解液を収納したタンク内Ｋｌｉ定・可動電極を対向配
置し、この電極の周囲に絶縁筒を配置した液体抵抗器に
おいて、中間部を絶縁物を介して前記絶縁筒の側面に貫
通同定され九ヒートパイプを設けたことを特徴とする液
体抵抗器。In a liquid resistor in which Kli constant/movable electrodes are arranged facing each other in a tank containing an electrolytic solution and an insulating cylinder is arranged around the electrodes, the intermediate part is penetrated through the side surface of the insulating cylinder through an insulator. A liquid resistor characterized by being equipped with a heat pipe.