US2318939A - Gas blast circuit breaker - Google Patents

Gas blast circuit breaker Download PDF

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Publication number
US2318939A
US2318939A US395689A US39568941A US2318939A US 2318939 A US2318939 A US 2318939A US 395689 A US395689 A US 395689A US 39568941 A US39568941 A US 39568941A US 2318939 A US2318939 A US 2318939A
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US
United States
Prior art keywords
valve
circuit breaker
gas
gas blast
blast circuit
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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 - Lifetime
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US395689A
Inventor
Halm Alfred
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BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
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BBC Brown Boveri France SA
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 BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
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Publication of US2318939A publication Critical patent/US2318939A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic

Definitions

  • blow valve for extinguishing the arc is generally arranged so that the direction of flow of the gas blast is diverted either whilst passing through the valve itself or before and after the valve. All known arrangements of this kind thus have the disadvantage that the rupturing capacity is diminished because these changes in the direction of the gas blast decrease the velocity of flow andv cause eddies to form.
  • the present invention concerns a gas blast circuit breaker the switch chamber of which is built together with a supporting insulator in the form of a column, the aforementioned disadvantages being overcome by arranging inside the column between the switch chamber and the insulator a blow valve so constructed that the direction of ow of the compressed gas through the valve lies inthe axis determined by the supply pipe and the switch chamber.
  • FIG. 1 of the drawing shows a sectional view of the blow valve to an enlarged scale.
  • the switch chamber a of the gas blast circuit breaker is mounted by means of the coupling b on the supporting insulator c so as to form a column which is carried by the baseplate d.
  • 'I'his baseplate is builtl to serve asaI compressed gas container and can if necessary be made portable.
  • e indicates a voltage isolating switch blade the counter-contact of which is mounted on the supporting insulator f.
  • the switch chamber a contains one or more circuit interrupting points arranged in series. A11 insulating parts can be built with or without petticoats.
  • the compressed gas is supplied to the circuit interrupting contacts from container d through conduits y, y1 and blow valve h located in the coupling piece b.
  • the control mechanism for regulating the gas supply is not shown in the drawing because it is not an essential element of the invention; it can be operated by hand, pneumatically or electropneumatically.
  • 'I'he valve disc of the blow valve is xed in a guide tube k which slides in a cylindrical bore inside the valve body.
  • n the outside of the guide tube k is a piston m located in a slot in the valve body and acted on by the ,closing spring n.
  • the guide tube k can also be built as a slide valve which controls gas inlet and outlet openings in the blow valve body and serves to exhaust the switch chamber in the same manner as the bore p. This guide tube k can also be employed for special control purposes.
  • Gas blast circuit breaker the switch chamber of which is built together with a, supporting insulator in the form of a column, characterised by the feature that in the coupling piece between the switch chamber and the insulator a blow valve is arranged, said valve being provided with a cylindrical guide for the valve disc and a pressure piston for opening the valve against the action of a closing spring so that the direction of iiow of the compressed gas through said valve lies in the direction of the axis determined by the gas supply pipe and the switch chamber.
  • Gas blast circuit breaker as in claim 1, characterised by the feature that the valve disc is xed in a guide tube on the outside of which an annular piston is arranged.
  • Gas blast circuit breaker as in claim 1, characterised by the feature that the valve disc is fixed in a guide tube which is built in the form of a slide valve which controls gas ports in the valve body.
  • a gas blast circuit breaker having a tubular switch chamber and a tubular supporting insulator arranged in a straight column, a coupling member between the switch chamber and the insulator and a disc blow valve mounted in said coupling member for movement in the direction of the axis of said column so that the direction of movement of the valve disc and of the pressure gas through said column is in the straight line axis o1' said column.

Description

May 1l, 1943. A. HALM GAs BLAST CIRCUIT BREAKER Filed May 28, 1941 dll Patented May 11, 1943 UNITED STATES PATENT OFFICE GAS BLAST CIRCUIT BREAKER land Application May 28, 1941, Serial No. 395,689 In Switzerland June 8, 1940 4 Claims.
In gas blast circuit breakers the blow valve for extinguishing the arc is generally arranged so that the direction of flow of the gas blast is diverted either whilst passing through the valve itself or before and after the valve. All known arrangements of this kind thus have the disadvantage that the rupturing capacity is diminished because these changes in the direction of the gas blast decrease the velocity of flow andv cause eddies to form.
The present invention concerns a gas blast circuit breaker the switch chamber of which is built together with a supporting insulator in the form of a column, the aforementioned disadvantages being overcome by arranging inside the column between the switch chamber and the insulator a blow valve so constructed that the direction of ow of the compressed gas through the valve lies inthe axis determined by the supply pipe and the switch chamber.
A constructional example of the invention is illustrated diagrammatically in Fig. 1 of the drawing, Fig. 2 shows a sectional view of the blow valve to an enlarged scale.
The switch chamber a of the gas blast circuit breaker is mounted by means of the coupling b on the supporting insulator c so as to form a column which is carried by the baseplate d. 'I'his baseplate is builtl to serve asaI compressed gas container and can if necessary be made portable. e indicates a voltage isolating switch blade the counter-contact of which is mounted on the supporting insulator f. The switch chamber a contains one or more circuit interrupting points arranged in series. A11 insulating parts can be built with or without petticoats. The compressed gas is supplied to the circuit interrupting contacts from container d through conduits y, y1 and blow valve h located in the coupling piece b. The control mechanism for regulating the gas supply is not shown in the drawing because it is not an essential element of the invention; it can be operated by hand, pneumatically or electropneumatically. 'I'he valve disc of the blow valve is xed in a guide tube k which slides in a cylindrical bore inside the valve body. n the outside of the guide tube k is a piston m located in a slot in the valve body and acted on by the ,closing spring n.
In order to open the blow valve compressed gas is passed from the container d. through the opening 0 in the valve body to the side of the piston m Opposite to that on which the closing spring n is located. The compressed gas stream can thus flow in a straight line from the gas container through the blow valve to the switch chamber, without being deviated from its course so that favourable conditions for extinguishing the arc are obtained.
The guide tube k can also be built as a slide valve which controls gas inlet and outlet openings in the blow valve body and serves to exhaust the switch chamber in the same manner as the bore p. This guide tube k can also be employed for special control purposes.
I claim:
1. Gas blast circuit breaker the switch chamber of which is built together with a, supporting insulator in the form of a column, characterised by the feature that in the coupling piece between the switch chamber and the insulator a blow valve is arranged, said valve being provided with a cylindrical guide for the valve disc and a pressure piston for opening the valve against the action of a closing spring so that the direction of iiow of the compressed gas through said valve lies in the direction of the axis determined by the gas supply pipe and the switch chamber.
2. Gas blast circuit breaker as in claim 1, characterised by the feature that the valve disc is xed in a guide tube on the outside of which an annular piston is arranged.
3. Gas blast circuit breaker as in claim 1, characterised by the feature that the valve disc is fixed in a guide tube which is built in the form of a slide valve which controls gas ports in the valve body.
4. A gas blast circuit breaker having a tubular switch chamber and a tubular supporting insulator arranged in a straight column, a coupling member between the switch chamber and the insulator and a disc blow valve mounted in said coupling member for movement in the direction of the axis of said column so that the direction of movement of the valve disc and of the pressure gas through said column is in the straight line axis o1' said column.
ALFRED HAIM.
US395689A 1940-06-08 1941-05-28 Gas blast circuit breaker Expired - Lifetime US2318939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH552984X 1940-06-08

Publications (1)

Publication Number Publication Date
US2318939A true US2318939A (en) 1943-05-11

Family

ID=4519771

Family Applications (1)

Application Number Title Priority Date Filing Date
US395689A Expired - Lifetime US2318939A (en) 1940-06-08 1941-05-28 Gas blast circuit breaker

Country Status (6)

Country Link
US (1) US2318939A (en)
BE (1) BE441660A (en)
CH (1) CH216795A (en)
FR (1) FR872752A (en)
GB (1) GB552984A (en)
NL (1) NL57802C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE940055C (en) * 1952-09-30 1956-03-08 Licentia Gmbh Frame for pressurized gas switch of the wall switch type

Also Published As

Publication number Publication date
BE441660A (en)
GB552984A (en) 1943-05-04
FR872752A (en) 1942-06-18
NL57802C (en)
CH216795A (en) 1941-09-15

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