JP2606179Y2 - Gas density monitoring device - Google Patents
Gas density monitoring deviceInfo
- Publication number
- JP2606179Y2 JP2606179Y2 JP1992084034U JP8403492U JP2606179Y2 JP 2606179 Y2 JP2606179 Y2 JP 2606179Y2 JP 1992084034 U JP1992084034 U JP 1992084034U JP 8403492 U JP8403492 U JP 8403492U JP 2606179 Y2 JP2606179 Y2 JP 2606179Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pressure
- temperature
- pointer
- monitoring device
- 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 - Fee Related
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- Examining Or Testing Airtightness (AREA)
Description
【0001】[0001]
【産業上の利用分野】本考案は、絶縁ガス封入電気機器
等のガス密度監視装置の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a gas density monitoring device for an electric device filled with insulating gas.
【0002】[0002]
【従来の技術】SF6ガスはその優れた絶縁性能と冷却
性能を有するため、変圧器や遮断機等の封入SF6ガス
として広く用いられている。しかし、この絶縁および冷
却性能は封入されたSF6ガスの密度により決定される
ため、このようなガス絶縁機器ではガス漏れによるガス
密度の低下を常に監視する必要がある。そこで、従来か
らガス密度の低下を常に監視するためにガス密度リレー
等を用いたガス密度監視装置が使用されている。この従
来のガス密度監視装置では、所定限界値よりガス密度が
低下した場合に警報を発することにより、ガス密度の監
視を行っている。2. Description of the Related Art SF 6 gas has been widely used as a sealed SF 6 gas for transformers, circuit breakers, etc. because of its excellent insulating performance and cooling performance. However, since the insulation and cooling performance is determined by the density of the sealed SF 6 gas, it is necessary to constantly monitor a decrease in gas density due to gas leakage in such a gas insulation device. Therefore, conventionally, a gas density monitoring device using a gas density relay or the like has been used to constantly monitor a decrease in gas density. This conventional gas density monitoring device monitors the gas density by issuing an alarm when the gas density falls below a predetermined limit value.
【0003】しかし、ガス密度が限界値より低下した時
のみ警報を発するに過ぎず、ガス密度がどの程度になっ
ているか機器に取付けた圧力計と温度計の指示値を読み
取って、この読み取り指示値と温度圧力特性銘板から初
期封入圧(定格圧力)との差を求めて判断していた。こ
の場合、ガス密度監視装置ではガス絶縁機器の容器内の
ガスの温度や圧力を測定する温度計と圧力計が必要にな
り、これらの計測値を操作者が目視し、これらの値を温
度−圧力特性銘板にプロットするため、監視者の測定値
のプロットという作業を伴うため、保守管理の人間が必
要になる。However, only an alarm is issued when the gas density falls below the limit value, and the readings of the pressure gauge and the thermometer attached to the equipment are read to determine the gas density and the reading instruction is given. The difference between the value and the initial filling pressure (rated pressure) was determined from the temperature and pressure characteristic nameplate. In this case, the gas density monitoring device requires a thermometer and a pressure gauge for measuring the temperature and pressure of the gas in the container of the gas insulating device, and the operator visually observes these measured values, and refers to these values as temperature- Since the plotting on the pressure characteristic nameplate involves the work of plotting the measured values of the observer, a maintenance person is required.
【0004】さらに、プロットミスによる測定誤差を生
じ、信頼性が低下してしまうという不都合があった。[0004] Further, there is a disadvantage that a measurement error occurs due to a plot error and reliability is reduced.
【0005】そこで、本出願人は先に新しい方式のガス
密度監視装置(実開昭62−59713)を提案してい
る。これは前記した従来のガス密度監視装置の問題点を
解決するためになされたもので、温度−圧力特性銘板を
不要とし、監視者が一目で封入ガス圧力が適正であるか
否かを判断でき、しかも構成が平易で自動監視ができる
ようにしたもので、同軸上で各々別々に回動する第1指
針および第2指針と、前記第1指針に感温筒内の圧力に
応動し、かつガス絶縁機器容器内のガス温度の増減時に
回動力を与える第1の圧力/回動変換部と、前記第2指
針にガス絶縁機器容器内のガス圧力に応動して前記第1
指針と同じ方向の回動力を与える第2の圧力/回動変換
部と、前記感温筒内に気体を封入して、該感温筒を前記
ガス絶縁容器内の測温部に配設したものである。Therefore, the present applicant has previously proposed a new type of gas density monitoring device (Japanese Utility Model Application Laid-Open No. 62-59713). This was made in order to solve the above-described problems of the conventional gas density monitoring device, and eliminates the need for a temperature-pressure characteristic nameplate, so that a monitor can determine at a glance whether or not the charged gas pressure is appropriate. In addition, the configuration is simple and automatic monitoring can be performed. The first pointer and the second pointer are separately rotated coaxially, and the first pointer responds to the pressure in the temperature-sensitive cylinder, and A first pressure / rotation conversion unit for providing a rotating force when the gas temperature in the gas insulated equipment container increases or decreases; and the second pointer responds to the gas pressure in the gas insulated equipment container by the second pointer.
A second pressure / rotational transformation unit giving the same direction of rotational force to guide, by sealing Pneumatic fluid to said temperature sensing in the cylinder, arranged sensitive bulb temperature measuring portion of the gas-insulated container It was done.
【0006】上記のガス密度監視装置(実開昭62−5
9713)を図4、図5および図6を参照して説明す
る。図4において、21はガス密度を監視されるガス絶
縁機器で、このガス絶縁機器21は、ガス連結通路22
および23を介して冷却器24とガス絶縁機器容器25
の内部と連結してなるものである。ガス供給通路26は
冷却器24とSF6ガス供給槽27を連結するもので、
ガス絶縁機器21の内部のガス量が不足したときに、ガ
ス供給通路26に設けた図示しないバルブ等を動作させ
てガス供給槽27より冷却器24を介してガス絶縁容器
25の内部に供給する。ガス絶縁機器容器25の内部は
変圧器を構成する鉄心28およびコイル29と感温筒3
0からなり、変圧器部分Bにはガス連結通路22および
23に設けた図示しないファンの作動により、または、
自然対流によって冷却器24よりSF6ガスが循環され
るようになっている。ガス通路31はガス絶縁機器容器
25の内部とゲージ部32を連結するもので、このゲー
ジ部32はガス通路33を経て感温筒30に連結されて
いる。矢印はSF6ガスの流れを示している。[0006] The above gas density monitoring device (Japanese Utility Model Application Laid-Open No. 62-5)
9713) will be described with reference to FIG. 4, FIG. 5, and FIG. In FIG. 4, reference numeral 21 denotes a gas insulating device whose gas density is monitored.
Cooler 24 and gas insulated equipment container 25 via
Is connected to the inside of The gas supply passage 26 connects the cooler 24 and the SF 6 gas supply tank 27,
When the amount of gas inside the gas insulating device 21 becomes insufficient, a valve or the like (not shown) provided in the gas supply passage 26 is operated to supply the gas from the gas supply tank 27 to the inside of the gas insulating container 25 via the cooler 24. . The inside of the gas-insulated equipment container 25 includes an iron core 28 and a coil 29 constituting a transformer and the temperature-sensitive cylinder 3.
0 in the transformer portion B by the operation of a fan (not shown) provided in the gas connection passages 22 and 23, or
The SF 6 gas is circulated from the cooler 24 by natural convection. The gas passage 31 connects the inside of the gas-insulated equipment container 25 to the gauge portion 32, and the gauge portion 32 is connected to the temperature-sensitive cylinder 30 via the gas passage 33. Arrows indicate the flow of SF 6 gas.
【0007】次に、感温筒30およびゲージ部32の機
構について図5および図6を参照して説明する。感温筒
30はガス絶縁機器容器25の上下にわたった筒状のガ
ス封入容器からなり、この感温筒30の内部には、ガス
絶縁機器容器25の内部に密封されるガスと同じSF6
ガスが封入されると共に、ガス絶縁機器容器25の内部
に封入する定格圧力(20°Cにおける)とほぼ同じ圧
力P1のSF6ガスが封入される。そして、この感温筒3
0には圧力変換部34(ブルドン管またはベロー等から
なる)が設けられており、感温筒30の内部の圧力変化
分をこれに比例した機械的位置変位を変える。また、こ
の機械的位置の変位は変換部35によって第1指針
(板)36に回動力を与えるようになっており、この圧
力変換部34と変換部35で第1の圧力/回動変換部P
1/Rを構成し、例えば、感温筒30の内部の圧力P1が
下がったとき第1指針(板)36を図6の反時計方向に
回動させ、圧力P1が上がったとき時計方向に回動させ
る。また、圧力変換部37は図4に示すようにガス絶縁
機器容器25の内部の圧力P2がガス通路31によって
導かれたガス絶縁機器容器25の内部の圧力変化分をこ
れに比例した機械的位置の変位に変える。また、この機
械的位置の変位は変換部38によって第2指針39に回
動力を与えるようになっている。この圧力変換部37と
変換部38で第2の圧力/回動変換部P2/Rを構成
し、例えば、ガス絶縁機器容器25の内部の圧力P2が
下がったときは第2指針39を図6の反時計方向に回動
させ、圧力P2が上がったときは時計方向に回動させ
る。なお、40は目盛板で、41はゲージ本体である。
また、接点42は第1指針(板)36に設けられてお
り、接点43は第2指針39に設けられている。これら
の接点42,43は相対向する位置に設けられ、ガス圧
力が危険範囲になったときに接触して警報器Cを動作さ
せる。Next, the mechanism of the temperature sensing cylinder 30 and the gauge section 32 will be described with reference to FIGS. The temperature-sensitive cylinder 30 is formed of a cylindrical gas-filled container extending vertically above and below the gas-insulated equipment container 25. Inside the temperature-sensitive cylinder 30 is the same SF 6 as the gas sealed inside the gas-insulated equipment container 25.
The gas is sealed, and SF 6 gas having a pressure P 1 substantially equal to the rated pressure (at 20 ° C.) sealed inside the gas-insulated equipment container 25 is sealed. And this thermosensitive cylinder 3
At 0, a pressure converter 34 (made of a Bourdon tube or bellows) is provided, and changes the pressure change inside the temperature-sensitive cylinder 30 by a mechanical displacement proportional to the pressure change. In addition, the displacement of the mechanical position gives a rotating power to the first pointer (plate) 36 by the conversion unit 35, and the pressure conversion unit 34 and the conversion unit 35 use the first pressure / rotation conversion unit. P
1 / R constitute, for example, the first pointer (plate) 36 when the internal pressure P 1 of the temperature sensing tube 30 is lowered is rotated in the counterclockwise direction in FIG. 6, when the pressure P 1 rose clock Rotate in the direction. Further, as shown in FIG. 4, the pressure converter 37 converts the pressure change inside the gas insulated equipment container 25 in which the pressure P 2 inside the gas insulated equipment container 25 is guided by the gas passage 31 into a mechanical change proportional to the pressure change. Change to displacement of position. In addition, the displacement of the mechanical position gives a rotational power to the second pointer 39 by the conversion unit 38. The pressure conversion part 37 and the conversion part 38 constitute a second pressure / rotation conversion part P 2 / R. For example, when the pressure P 2 inside the gas insulated equipment container 25 decreases, the second pointer 39 is used. It is rotated in the counterclockwise direction in FIG. 6, when the pressure P 2 in the up rotates clockwise. In addition, 40 is a scale plate, and 41 is a gauge main body.
The contact 42 is provided on the first pointer (plate) 36, and the contact 43 is provided on the second pointer 39. These contacts 42 and 43 are provided at opposing positions, and come into contact when the gas pressure is in a dangerous range to operate the alarm C.
【0008】[0008]
【考案が解決しようとする課題】しかしながら、感温筒
内にガスを封入して、この感温筒をガス絶縁機器容器内
の測温部に配置しているので、圧力変換部と導管の容積
を考慮し、精度を高くするために感温筒の容積は大きく
なることから、ガス絶縁機器の測温部で感温筒が接地電
位の突起電極となり、ガス絶縁機器容器内の絶縁空間を
挟めることになり、その分だけガス絶縁機器容器が大き
くなる。However, since the gas is sealed in the temperature-sensitive cylinder and the temperature-sensitive cylinder is arranged in the temperature measuring section in the container of the gas insulated equipment, the volume of the pressure conversion section and the volume of the conduit are increased. In consideration of the above, since the volume of the temperature-sensitive cylinder increases to increase the accuracy, the temperature-sensitive cylinder becomes a protruding electrode of the ground potential in the temperature measuring section of the gas-insulated equipment, and can sandwich the insulating space in the gas-insulated equipment container. In other words, the size of the gas-insulated equipment container increases accordingly.
【0009】本考案は以上のような点に鑑みてなされた
もので、ガス密度監視装置の感温筒の小形化を図り、絶
縁信頼性の向上と小形化を図ったガス絶縁機器を提供す
ることを目的とする。The present invention has been made in view of the above points, and provides a gas-insulated device in which the size of a temperature-sensitive cylinder of a gas density monitoring device is reduced to improve insulation reliability and reduce the size. The purpose is to:
【0010】本考案のガス密度監視装置は、同軸上で各
々別々に回動する第1指針および第2指針と、前記第1
指針に感温筒内の液体体積変化に応動しかつガス絶縁機
器容器内のガス温度の増減時に回動力を与える第1の圧
力/回動変換部と、前記第2指針にガス絶縁機器容器内
のガス圧力に応動して前記第1指針と同じ方向の回動力
を与える第2の圧力/回動変換部とからなり、前記感温
筒内に液体を封入して、該感温筒を前記ガス絶縁機器容
器内の測温部に配設したガス密度監視装置とすることに
より、ガス漏れの程度を目視することができるようにし
たことを特徴としている。[0010] The gas density monitoring device of the present invention comprises a first pointer and a second pointer, each rotating separately on the same axis, and the first pointer and the second pointer.
A first pressure / rotation converter for responding to a change in the volume of liquid in the temperature-sensitive cylinder and providing a turning force when the temperature of the gas in the gas-insulated equipment container increases and decreases; And a second pressure / rotation conversion unit that applies a rotational force in the same direction as the first pointer in response to the gas pressure of the first needle. The gas density monitoring device provided in the temperature measuring section in the gas insulation equipment container is characterized in that the degree of gas leakage can be visually checked.
【0011】[0011]
【作用】上述のごとく構成され、感温筒内に液体を封入
して液体の温度による体積の膨張収縮を変換して第1指
針(板)を駆動しているため、感温筒の容積はガスに比
べて小さくなり、ガス絶縁機器内の絶縁空間を挟めない
ことから絶縁の信頼性が高くなる。Since the first needle (plate) is driven by converting the expansion and contraction of the volume due to the temperature of the liquid by enclosing the liquid in the temperature sensitive cylinder and configured as described above, the volume of the temperature sensitive cylinder is It is smaller than gas and does not interpose an insulating space in a gas insulating device, so that the reliability of insulation is increased.
【0012】[0012]
【実施例】以下、本考案の実施例を図面に基づいて説明
する。図1および図2において、感温筒およびゲージ部
の機構について図1および図2を参照して説明する。感
温筒1はガス絶縁機器容器の上下にわたった筒状の液体
封入容器2とからなり、この感温筒1の内部には、液体
が封入されるが、その際、ガス絶縁機器容器の内部に封
入する定格圧力(20°Cにおける)とほぼ同じ圧力P
1となるよう気体にて圧力調整されている。そして、こ
の感温筒1には圧力変換部3(ブルドン管またはベロー
などからなる)が設けられており、感温筒1の内部に封
入されている液体の体積変化に比例して圧力が変化し、
機械的位置変位に変える。また、この機械的位置の変位
は、変換部5によって第1指針(板)6に回動力を与え
るようになっており、この圧力変換部3と変換部5で第
1の圧力/回動変換部P1/Rを構成し、例えば感温筒
1の内部の圧力が下がったとき第1指針(板)6を図2
の反時計方向に回動させ、圧力P1が上がったときは時
計方向に回動させる。また、圧力変換部7は図2に示す
ように、ガス絶縁機器容器の内部の圧力P2がガス通路
8によって導かれたガス絶縁機器容器の内部の圧力変化
分をこれに比例した機械的位置の変位に変える。また、
この機械的位置の変位は変換部9によって第2指針10
に回動力を与えるようになっている。この圧力変換部7
と変換部9で第2の圧力/回動変換部P2/Rを構成
し、例えばガス絶縁機器容器の内部の圧力P2が下がっ
たとき、第2指針10を図2の反時計方向に回動させ、
圧力P2が上がったときは時計方向に回動させる。な
お、11は目盛板、12は第1指針(板)6に取り付け
られた表示板、13はゲージ本体である。また第1接点
14は、第1指針(板)6に設けられているもので、第
2接点15は第2指針10に設けられているものであ
る。これらの接点14,15は相対向する位置に設けら
れ、ガス圧力が危険範囲になったときに接触して警報器
Aを動作させる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, the mechanism of the temperature sensing cylinder and the gauge unit will be described with reference to FIGS. 1 and 2. FIG. Temperature sensing tube 1 is made of a cylindrical liquid sealing container 2 which was over the top and bottom of the gas-insulated equipment container, in the interior of the temperature sensing tube 1, the liquid
At this time, the pressure P being substantially the same as the rated pressure (at 20 ° C.) sealed inside the gas-insulated equipment container.
The pressure is adjusted with a gas so as to be 1 . The temperature-sensitive cylinder 1 is provided with a pressure converter 3 (made of a Bourdon tube or a bellows), and the pressure changes in proportion to the volume change of the liquid sealed in the temperature-sensitive cylinder 1. And
Change to mechanical displacement. In addition, the mechanical position displacement applies a rotating force to the first pointer (plate) 6 by the conversion unit 5, and the first pressure / rotation conversion is performed by the pressure conversion unit 3 and the conversion unit 5. The first pointer (plate) 6 is configured as shown in FIG. 2 when the pressure inside the temperature-sensitive cylinder 1 is reduced.
, And when the pressure P1 rises, it is rotated clockwise. As shown in FIG. 2, the pressure conversion unit 7 converts the pressure change inside the gas-insulated equipment container, which is caused by the pressure P2 inside the gas-insulated equipment container, into the mechanical position of the mechanical position proportional to the pressure change. Change to displacement. Also,
The displacement of the mechanical position is converted by the conversion unit 9 into the second pointer 10.
Is to be turned. This pressure converter 7
And the conversion unit 9 constitute a second pressure / rotation conversion unit P2 / R. For example, when the pressure P2 inside the gas-insulated equipment container decreases, the second pointer 10 rotates counterclockwise in FIG. Let
When the pressure P2 rises, it is turned clockwise. Reference numeral 11 denotes a scale plate, 12 denotes a display plate attached to the first pointer (plate) 6, and 13 denotes a gauge body. The first contact 14 is provided on the first pointer (plate) 6, and the second contact 15 is provided on the second pointer 10. These contacts 14 and 15 are provided at opposing positions, and when the gas pressure falls within the dangerous range, the contacts 14 and 15 operate the alarm A.
【0013】図3は第2指針10の温度−圧力の関係を
示す温度−圧力曲線図で、圧力のパラメータは、ガス絶
縁機器の封入ガス圧力で、ガス絶縁機器の圧力仕様によ
り決定される。温度−圧力特性は、概略、理想気体(ボ
イルシャールの法則)の特性となる。20°Cにおける
ガス圧力が、直線P1は0.5kgf/cm2・g、直線
P2は0.7kgf/cm2・g、直線P3は1.0kg
f/cm2・g、直線P3は1.2kgf/cm2・gの
場合を示している。FIG. 3 is a temperature-pressure curve diagram showing the temperature-pressure relationship of the second indicator 10, wherein the pressure parameter is the gas pressure of the gas-insulated equipment and is determined by the pressure specification of the gas-insulated equipment. The temperature-pressure characteristics are approximately the characteristics of an ideal gas (Boiler-Schar law). Gas pressure at 20 ° C is, the straight line P 1 is 0.5kgf / cm 2 · g, linear P 2 is 0.7kgf / cm 2 · g, linear P 3 is 1.0kg
f / cm 2 · g and the straight line P 3 show the case of 1.2 kgf / cm 2 · g.
【0014】例として、ガス絶縁機器のガス圧力が1.
0kgf/cm2・g(at20°C)の場合、感温筒
温度と第2指針指示値の関係は直線P3で表され、この
ような関係になるように第2指針は変換する。As an example, if the gas pressure of the gas insulating device is 1.
In the case of 0 kgf / cm 2 · g (at 20 ° C.), the relationship between the temperature-sensitive cylinder temperature and the indicated value of the second indicator is represented by a straight line P 3 , and the second indicator is converted so as to have such a relationship.
【0015】なお、本考案のガス密度監視装置は、図4
の従来例と同様な構成で取付られる。The gas density monitoring device of the present invention is shown in FIG.
Is mounted in the same configuration as the conventional example.
【0016】[0016]
【表1】 [Table 1]
【0017】[0017]
【考案の効果】以上述べたように、感温筒内に液体を封
入して液体の温度による体積膨張収縮を変換して指針を
駆動しているため、 (1)ガス絶縁機器の小形化 (2)ガス絶縁機器の絶縁信頼性が向上する。[Effect of the Invention] As described above, since the liquid is sealed in the temperature-sensitive cylinder and the pointer is driven by converting the volume expansion / contraction caused by the temperature of the liquid, (1) miniaturization of the gas insulation device ( 2) The insulation reliability of the gas insulation device is improved.
【0018】(3)感温筒の小形化から計器の小形化が
図れる。(3) The downsizing of the temperature-sensitive cylinder allows the downsizing of the instrument.
【0019】(4)小形化によるコスト低減が図れる。(4) Cost reduction by downsizing can be achieved.
【0020】などの効果が得られる。The following effects can be obtained.
【図1】本考案のガス密度監視装置の実施例を示す要部
構成図。FIG. 1 is a main part configuration diagram showing an embodiment of a gas density monitoring device of the present invention.
【図2】本考案のガス密度監視装置の実施例の表示部の
平面図。FIG. 2 is a plan view of a display unit of the embodiment of the gas density monitoring device of the present invention.
【図3】本考案のガス密度監視装置の実施例の温度−圧
力曲線図。FIG. 3 is a temperature-pressure curve diagram of the embodiment of the gas density monitoring device of the present invention.
【図4】ガス絶縁機器のガス密度監視装置の取付状態を
示す要部構成図。FIG. 4 is a main part configuration diagram showing an attached state of the gas density monitoring device of the gas insulating device.
【図5】従来のガス密度監視装置を示す要部構成図。FIG. 5 is a main part configuration diagram showing a conventional gas density monitoring device.
【図6】従来のガス密度監視装置の実施例の表示部の平
面図。FIG. 6 is a plan view of a display unit of the embodiment of the conventional gas density monitoring device.
1…感温筒 2…液体封入容器 3…圧力変換部 4…液体通路 5…変換部 6…第1指針(板) 8…ガス通路 9…変換部 10…第2指針 11…目盛板 12…表示板 13…ゲージ本体 14…第1接点 15…第2接点 A…警報器 P1/R…第1の圧力/回動変換部 P2/R…第2の圧力/回動変換部DESCRIPTION OF SYMBOLS 1 ... Temperature sensing cylinder 2 ... Liquid enclosure 3 ... Pressure conversion part 4 ... Liquid passage 5 ... Conversion part 6 ... First pointer (plate) 8 ... Gas passage 9 ... Conversion part 10 ... Second pointer 11 ... Scale plate 12 ... display panel 13 ... gauge body 14 ... first contact 15 ... second contact a ... alarm P 1 / R ... first pressure / rotational transformation unit P 2 / R ... second pressure / rotational transformation unit
Claims (1)
よび第2指針と、前記第1指針に感温筒内の液体体積変
化に応動しかつガス絶縁機器容器内のガス温度の増減時
に回動力を与える第1の圧力/回動変換部と、前記第2
指針にガス絶縁機器容器内のガス圧力に応動して前記第
1指針と同じ方向の回動力を与える第2の圧力/回動変
換部とからなり、前記感温筒内に液体を封入して該感温
筒を前記ガス絶縁機器容器内の測温部に配設したことを
特徴とするガス密度監視装置。1. A first pointer and a second pointer, each of which rotates independently on the same axis, and the first pointer responds to a change in the liquid volume in the temperature-sensitive cylinder and increases or decreases the gas temperature in the gas-insulated equipment container. A first pressure / rotational converter for sometimes providing a rotational power;
A second pressure / rotation conversion unit that applies a rotational force in the same direction as the first pointer in response to the gas pressure in the gas-insulated equipment container to the pointer; A gas density monitoring device, wherein the temperature-sensitive cylinder is disposed in a temperature measuring section inside the gas insulating equipment container.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992084034U JP2606179Y2 (en) | 1992-12-07 | 1992-12-07 | Gas density monitoring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992084034U JP2606179Y2 (en) | 1992-12-07 | 1992-12-07 | Gas density monitoring device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0647839U JPH0647839U (en) | 1994-06-28 |
JP2606179Y2 true JP2606179Y2 (en) | 2000-09-25 |
Family
ID=13819251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1992084034U Expired - Fee Related JP2606179Y2 (en) | 1992-12-07 | 1992-12-07 | Gas density monitoring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2606179Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109148216B (en) * | 2018-08-07 | 2024-01-30 | 云南电网有限责任公司德宏供电局 | Detachable and adjustable sulfur hexafluoride density relay |
CN110618060A (en) * | 2019-09-04 | 2019-12-27 | 上海乐研电气有限公司 | Electromechanical integral digital display gas density relay |
-
1992
- 1992-12-07 JP JP1992084034U patent/JP2606179Y2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0647839U (en) | 1994-06-28 |
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