GB1026435A - Pressure relief means - Google Patents

Pressure relief means

Info

Publication number
GB1026435A
GB1026435A GB1951864A GB1951864A GB1026435A GB 1026435 A GB1026435 A GB 1026435A GB 1951864 A GB1951864 A GB 1951864A GB 1951864 A GB1951864 A GB 1951864A GB 1026435 A GB1026435 A GB 1026435A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
pressure
bolt
housing
strain
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
Application number
GB1951864A
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.)
S&C Electric Co
Original Assignee
S&C Electric Co
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 S&C Electric Co filed Critical S&C Electric Co
Publication of GB1026435A publication Critical patent/GB1026435A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/53Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56Gas reservoirs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/53Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56Gas reservoirs
    • H01H2033/568Gas reservoirs with overpressure release, e.g. rupture membranes

Landscapes

  • Safety Valves (AREA)

Abstract

1,026,435. Valves. S. & C. ELECTRIC CO. May 11, 1964 [March 9, 1964], No. 19518/64. Heading F2V. [Also in Division H2] A pressure relief means suitable for use in circuit breakers comprises, in the embodiment shown in Fig. 2, a rupturable copper diaphragm 63 located at its outer periphery between a support ring 70 and an exhaust tube 61, the diaphragm being normally maintained in the position shown by means of strain wires 85 located between lugs 88 and a connecting member 89, and acting on the diaphragm via an adjusting plate 78, a ball 76, a jack screw 74 and a pressure plate 73. Secured to the diaphragm is a head 99 of a bolt 98, which bolt carries a diaphragm piercing means 93 and a piston 103. The outlet from the housing 53 is close d by a cover 108 held in place by a spring 111. The pressure within the housing acts via the diaphragm on the strain wires and on reaching a predetermined value causes the latter to break, thereby allowing the diaphragm to evert and also allowing the diaphragm piercing means to pierce the diaphragm, thus permitting the escape of gas, which escape results in a pressure difference across the piston, thereby causing it and the cutter to be ejected through the diaphragm and, along with the other separated parts, through the outlet of the housing 53. In the alternative embodiment shown in Fig. 9, excess pressure causes the diaphragm 41 to enter the recess 116 and this in turn causes the tube 123 to move, along with the disc 125. The movement of the disc fractures the strain-sensitive portion 131 of a bolt 133 and thereby releases a diaphragm cutter 136 which is urged to the right by a spring 137 to puncture the diaphragm.
GB1951864A 1964-03-09 1964-05-11 Pressure relief means Expired GB1026435A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35018964A 1964-03-09 1964-03-09

Publications (1)

Publication Number Publication Date
GB1026435A true GB1026435A (en) 1966-04-20

Family

ID=23375592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1951864A Expired GB1026435A (en) 1964-03-09 1964-05-11 Pressure relief means

Country Status (1)

Country Link
GB (1) GB1026435A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158520A2 (en) * 1984-04-09 1985-10-16 RAYCHEM CORPORATION (a Delaware corporation) Load break switch with safety mechanism
GB2235582A (en) * 1989-08-25 1991-03-06 Long & Crawford Limited Explosion vent arrangement
GB2252671A (en) * 1991-02-07 1992-08-12 Long & Crawford Limited High power switching arrangement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158520A2 (en) * 1984-04-09 1985-10-16 RAYCHEM CORPORATION (a Delaware corporation) Load break switch with safety mechanism
EP0158520A3 (en) * 1984-04-09 1986-11-12 RAYCHEM CORPORATION (a Delaware corporation) Load break switch with safety mechanism
GB2235582A (en) * 1989-08-25 1991-03-06 Long & Crawford Limited Explosion vent arrangement
GB2235582B (en) * 1989-08-25 1993-09-29 Long & Crawford Limited Explosion vent arrangement
GB2252671A (en) * 1991-02-07 1992-08-12 Long & Crawford Limited High power switching arrangement
GB2252671B (en) * 1991-02-07 1994-08-03 Long & Crawford Limited High power switching arrangement

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