US3749865A - Temperature responsive control switch with bi-metallic disk means - Google Patents

Temperature responsive control switch with bi-metallic disk means Download PDF

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Publication number
US3749865A
US3749865A US00210526A US3749865DA US3749865A US 3749865 A US3749865 A US 3749865A US 00210526 A US00210526 A US 00210526A US 3749865D A US3749865D A US 3749865DA US 3749865 A US3749865 A US 3749865A
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United States
Prior art keywords
temperature
secured
gas
shaft
bellows unit
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Expired - Lifetime
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US00210526A
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English (en)
Inventor
U Kalt
R Kung
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.)
BBC Brown Boveri AG Switzerland
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Bbc Brown Boveri & Cie
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Publication date
Application filed by Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
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Publication of US3749865A publication Critical patent/US3749865A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/28—Compensation for variation of ambient pressure or temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow

Definitions

  • a temperature'compensated gas density relay includes Appl' 210526 a bellows unit subjected to the gas, the pressure from which is transmitted by the bellows unit through a sup- [30] Foreign Application Priority Data port mounting a bi-metallic disc and a shaft carried by Feb.
  • This invention is directed to an improvement in the construction of a temperature-compensated gas density relay and wherein an element responding both to'pres sure and to temperature of the gas act in opposite directions on the operating element for an electrical switch component of the relay.
  • Such gas-density relays are used, for example, in gas circulating switches of the closed gas circuit type which are operated preferably with sulphur hexachloride sure within the nipple changes,the length of the bellows unit 3 will also change and hence the support member 4 will go up or down dependent upon the sense of the change in pressure.
  • the circular head portion of the support member 4 has secured to it the rim of a bimetallic temperature compensating disc 5 and the latter is provided with a central opening and through which the lower portion of a shaft 6 extends slidably into the hollow stem portion of the support 4 for guiding the shaft.
  • An intermediate collar 6a on shaft 6 abuts and is secured to the upper face of the bimetallic disc (SP that serves both as a quenching gas for arc extinction and also as an insulation gas for the switch parts at responsive element actsagainst atemperature compensating a back-pressure created by a fluid substance in a sensor responsive to changes in temperature.
  • SP bimetallic disc
  • the objective of the present invention is to provide a more simple and inexpensive solution for compensating temperature changes in a gas density relay.
  • this disc being secured at its periphery to a support member which in turn issecured to one end of a bellows unit subjected to the pressure of the gas being supervised.
  • a change in gas temperature which would tend to actuate the assembly of the bellows unit, support member and contact-actuating shaft in one direction, the central portion of the bi-metallic disc and the shaft will be displaced by a corresponding amount in the opposite direction relative to the support member, thus nullifying the effect of the temperature change.
  • nipple l is rigidly connected to the lower part of a housing 2 by means of a plurality of fastening bolts one of which is shown, and the-upper part of the nipple terminates in an end wall provided with an opening and around which one end of a bellows unit 3 is secured within the nipple by soldering.
  • a spring 11 of the double leaf type provided for each micro switch includes a central loop around the pivot shaft 12, a first laterally-extending leaf portion having its end in abutment with a lug 10 on the casing of the micro switch 9, and a second donwwardly extending leaf portion .which bears against an abutment established by a pivot shaft 8 which mounts a lever!
  • terminal strip 14 when removed provides access to a terminal strip 14 to I which connecting conductors are led from theright to the micro switches 9, and also access to a stuffing box 16 secured to a side wall of the housing through which the external conductors can be led into the housing and fastened to terminal strip 14.
  • a temperature-compensated gas density relay comprising a bellows unit subjectable to a pressurized gas to be supervised, one end of said bellows unit being fixed in position and the other end which is movable in response to a' change in gas pressure being secured to a support member to effect a corresponding movement thereof in a direction longitudinally of the bellows unit, a temperature-compensating bi-metallic disc subjectable to the temperature of the gas and having only the peripheral portion thereof secured to said support member for movement therewith, and a relay operating shaft secured to the central portion of said bi-metallic disc which is moved in one direction to actuate a relay member such as the contacts of an electrical switch in response to movement of said bellows unit effected by an increase in gas pressure, said central portion of said bi-metallic disc being spaced from said support member and said central portion together with said relay operating shaft secured thereto being movable in the opposite directionupon an increase in gas temperature thereby to compensate for an increase in gas pressure resulting solely from an increase in its
  • a temperature compensated gas density relay as defined in'claim 5 wherein said support member includes a head portion to which the periphery of said bimetallic disc is secured and a hollow stem portion into which a portion of said shaft extends and is guided as said shaft is displaced, said stem portion extending into 1 and being secured to one end of said bellows unit, the
  • a temperature compensated gas density relay as defined in claim 2 wherein said bellows unit is located within and secured to one end of a nipple and the end wall of said nipple includes an opening through which said stem portion of said support member extends into said bellows unit.
  • a temperature compensated gas density relay as defined in claim 2 wherein said shaft extends through said bi-metallic disc and includes an intermediate collar secured to the central portion thereof, the part of said shaft below said collar extending within the hollow stem portion of said support member and the part of said shaft above said collar serving to actuate said relay member.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermally Actuated Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Measuring Fluid Pressure (AREA)
US00210526A 1971-02-24 1971-12-21 Temperature responsive control switch with bi-metallic disk means Expired - Lifetime US3749865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH264071A CH528142A (de) 1971-02-24 1971-02-24 Druckabhängiger temperaturkompensierter Schalter

Publications (1)

Publication Number Publication Date
US3749865A true US3749865A (en) 1973-07-31

Family

ID=4238298

Family Applications (1)

Application Number Title Priority Date Filing Date
US00210526A Expired - Lifetime US3749865A (en) 1971-02-24 1971-12-21 Temperature responsive control switch with bi-metallic disk means

Country Status (7)

Country Link
US (1) US3749865A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS56897B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH528142A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE7110274U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2126236B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT947784B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL155976B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020442A (en) * 1974-03-08 1977-04-26 Hochiki Corporation Composite-type heat-system fire sensing device
US6252492B1 (en) 1999-03-18 2001-06-26 James P. Frank Condition-responsive electric switch mechanism
CN101847544A (zh) * 2010-05-14 2010-09-29 上海乐研电气科技有限公司 一种六氟化硫气体密度继电器
CN101866775A (zh) * 2009-04-20 2010-10-20 江苏省电力公司如皋市供电公司 等温测试密度继电器
US20130031958A1 (en) * 2011-08-05 2013-02-07 Scheucher Karl F Network manageable advanced gas sensor apparatus and method
CN103456561A (zh) * 2013-09-18 2013-12-18 上海乐研电气科技有限公司 一种高精度六氟化硫气体密度继电器
CN103474290A (zh) * 2013-09-18 2013-12-25 上海乐研电气科技有限公司 一种六氟化硫气体密度继电器的微动开关的调节机构
WO2014025652A2 (en) 2012-08-06 2014-02-13 Scheucher Karl F Network manageable advanced gas sensor apparatus and method
CN104681351A (zh) * 2015-02-05 2015-06-03 上海上芃电气有限公司 一种便于读取的高精度六氟化硫气体密度继电器
US9696248B2 (en) 2014-04-29 2017-07-04 Solon Manufacturing Company Gas insulated switchgear monitoring apparatus and method
CN107658178A (zh) * 2017-07-20 2018-02-02 上海乐研电气有限公司 一种六氟化硫气体密度继电器及抗振方法和抗振装置
US9885646B2 (en) 2015-01-15 2018-02-06 Solon Manufacturing Company Gas measurement apparatus
CN109103050A (zh) * 2018-09-28 2018-12-28 上海乐研电气有限公司 一种提高气体密度继电器精度的方法
CN110412460A (zh) * 2019-09-04 2019-11-05 上海乐研电气有限公司 一种气体密度继电器校验装置及其校验方法
US20220334184A1 (en) * 2019-09-04 2022-10-20 Shanghai Roye Electric Co., Ltd. Field detection device, system and method for achieving no maintenance of gas density relay

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7303223A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-03-08 1973-09-11
DE8130048U1 (de) * 1981-10-14 1982-03-04 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Druckdose zur Flüssigkeitsniveaukontrolle in wasserführenden Haushaltgeräten
CH664220A5 (de) * 1984-08-15 1988-02-15 Huba Control Ag Druckgeber fuer einen druckschalter oder einen regler.
CN118584314B (zh) * 2023-03-02 2025-05-09 上海乐研电气有限公司 一种气体密度继电器的仿真校验方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129309A (en) * 1960-04-12 1964-04-14 Westinghouse Canada Ltd Temperature-compensated pressure switches for controlling gas blast circuit interrupters
US3412357A (en) * 1967-01-24 1968-11-19 Kk Condition responsive switch
US3490342A (en) * 1967-04-18 1970-01-20 United Electric Controls Co Pressure control device
US3619526A (en) * 1968-08-19 1971-11-09 Simplifix Couplings Ltd Pressure-actuated switches

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514881A (en) * 1947-05-23 1950-07-11 United Electric Controls Co Thermostatic switch
US2635157A (en) * 1949-05-03 1953-04-14 Rheostatic Co Ltd Thermostatic control switch
DE963381C (de) * 1952-08-04 1957-05-09 Christian Buerkert Elektrothermischer Stellmotor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129309A (en) * 1960-04-12 1964-04-14 Westinghouse Canada Ltd Temperature-compensated pressure switches for controlling gas blast circuit interrupters
US3412357A (en) * 1967-01-24 1968-11-19 Kk Condition responsive switch
US3490342A (en) * 1967-04-18 1970-01-20 United Electric Controls Co Pressure control device
US3619526A (en) * 1968-08-19 1971-11-09 Simplifix Couplings Ltd Pressure-actuated switches

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020442A (en) * 1974-03-08 1977-04-26 Hochiki Corporation Composite-type heat-system fire sensing device
US6252492B1 (en) 1999-03-18 2001-06-26 James P. Frank Condition-responsive electric switch mechanism
CN101866775A (zh) * 2009-04-20 2010-10-20 江苏省电力公司如皋市供电公司 等温测试密度继电器
CN101866775B (zh) * 2009-04-20 2015-02-18 国家电网公司 等温测试密度继电器
CN101847544A (zh) * 2010-05-14 2010-09-29 上海乐研电气科技有限公司 一种六氟化硫气体密度继电器
US20150204753A1 (en) * 2011-08-05 2015-07-23 Karl F. Scheucher Network manageable advanced gas sensor apparatus and method
US20130031958A1 (en) * 2011-08-05 2013-02-07 Scheucher Karl F Network manageable advanced gas sensor apparatus and method
US9851277B2 (en) * 2011-08-05 2017-12-26 Solon Manufacturing Company Network manageable advanced gas sensor apparatus and method
US9335232B2 (en) * 2011-08-05 2016-05-10 Solon Manufacturing Company Network manageable advanced gas sensor apparatus and method
US9212966B2 (en) * 2011-08-05 2015-12-15 Solon Manufacturing Company Network manageable advanced gas sensor apparatus and method
EP2880413A4 (en) * 2012-08-06 2016-05-04 Solon Mfg Company A NETWORK MANAGABLE ADVANCED GAS SENSOR DEVICE AND METHOD THEREFOR
WO2014025652A3 (en) * 2012-08-06 2014-04-03 Scheucher Karl F Network manageable advanced gas sensor apparatus and method
WO2014025652A2 (en) 2012-08-06 2014-02-13 Scheucher Karl F Network manageable advanced gas sensor apparatus and method
CN103474290B (zh) * 2013-09-18 2015-10-21 上海乐研电气科技有限公司 一种六氟化硫气体密度继电器的微动开关的调节机构
CN103474290A (zh) * 2013-09-18 2013-12-25 上海乐研电气科技有限公司 一种六氟化硫气体密度继电器的微动开关的调节机构
CN103456561B (zh) * 2013-09-18 2017-01-18 上海乐研电气科技有限公司 一种高精度六氟化硫气体密度继电器
CN103456561A (zh) * 2013-09-18 2013-12-18 上海乐研电气科技有限公司 一种高精度六氟化硫气体密度继电器
US9696248B2 (en) 2014-04-29 2017-07-04 Solon Manufacturing Company Gas insulated switchgear monitoring apparatus and method
US9885646B2 (en) 2015-01-15 2018-02-06 Solon Manufacturing Company Gas measurement apparatus
CN104681351A (zh) * 2015-02-05 2015-06-03 上海上芃电气有限公司 一种便于读取的高精度六氟化硫气体密度继电器
CN107658178A (zh) * 2017-07-20 2018-02-02 上海乐研电气有限公司 一种六氟化硫气体密度继电器及抗振方法和抗振装置
CN107658178B (zh) * 2017-07-20 2020-12-11 上海乐研电气有限公司 一种六氟化硫气体密度继电器及抗振方法和抗振装置
CN109103050A (zh) * 2018-09-28 2018-12-28 上海乐研电气有限公司 一种提高气体密度继电器精度的方法
CN110412460A (zh) * 2019-09-04 2019-11-05 上海乐研电气有限公司 一种气体密度继电器校验装置及其校验方法
WO2021043037A1 (zh) * 2019-09-04 2021-03-11 上海乐研电气有限公司 一种气体密度继电器校验装置及其校验方法
US20220334184A1 (en) * 2019-09-04 2022-10-20 Shanghai Roye Electric Co., Ltd. Field detection device, system and method for achieving no maintenance of gas density relay
US11988714B2 (en) 2019-09-04 2024-05-21 Shanghai Roye Electric Co., Ltd. Gas density relay verification device and verification method therefor
US12181525B2 (en) * 2019-09-04 2024-12-31 Shanghai Roye Electric Co., Ltd. Field detection device, system and method for achieving no maintenance of gas density relay

Also Published As

Publication number Publication date
JPS56897B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-01-10
DE2113100B2 (de) 1978-11-23
NL155976B (nl) 1978-02-15
FR2126236B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-09-02
DE7110274U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-02-08
DE2113100A1 (de) 1972-09-07
CH528142A (de) 1972-09-15
NL7202281A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-08-28
FR2126236A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-10-06
IT947784B (it) 1973-05-30

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