CN110556264A - Circuit breaker with pressure release function - Google Patents
Circuit breaker with pressure release function Download PDFInfo
- Publication number
- CN110556264A CN110556264A CN201910816932.6A CN201910816932A CN110556264A CN 110556264 A CN110556264 A CN 110556264A CN 201910816932 A CN201910816932 A CN 201910816932A CN 110556264 A CN110556264 A CN 110556264A
- Authority
- CN
- China
- Prior art keywords
- pressure relief
- pressure
- circuit breaker
- blocking piece
- relief opening
- 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.)
- Pending
Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000010586 diagram Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Classifications
-
- 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
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a circuit breaker with a pressure relief function. The circuit breaker comprises a shell, wherein a pressure relief opening is formed in the shell, the circuit breaker further comprises a pressure relief cover which covers the pressure relief opening and is connected with the shell, and an exhaust hole which is communicated with the pressure relief opening is formed in the pressure relief cover; a sealing ring is arranged at the pressure relief opening, and a blocking piece which is used for blocking the pressure relief opening by jacking the sealing ring is movably arranged; an elastic piece for applying elastic force to the blocking sheet to block the pressure relief opening is arranged in the pressure relief cover. When the air pressure in the shell is larger than the elastic force of the elastic piece to the blocking piece, the blocking piece releases the blocking of the pressure relief opening so that the pressure relief opening is communicated with the exhaust hole to relieve the pressure; when the gas pressure in the shell is smaller than the elastic force of the elastic piece to the blocking piece, the elastic piece pushes the blocking piece to block the pressure relief opening, so that the pressure relief structure on the breaker can be repeatedly used, and the use cost of the breaker is reduced.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to a circuit breaker with a pressure relief function.
Background
The circuit breaker using sulfur hexafluoride insulating gas as an insulating medium or an arc extinguishing medium exists in the prior art, when the insulating gas in the circuit breaker leaks, the insulation and arc extinguishing performance of the circuit breaker is greatly reduced, and the short circuit phenomenon easily occurs in the circuit breaker, so that the explosion hidden trouble exists. In order to avoid the above situation, the circuit breaker is usually equipped with a pressure relief device shown in fig. 1 to prevent the occurrence of accidents of injuring people due to explosion, the pressure relief device comprises an O-ring 101, a rupture disk 102, an aluminum pressure plate 103 and an explosion-proof cover 104, the rupture disk 102 and the O-ring 101 are pressed by the aluminum pressure plate 103, and the whole pressure relief device is fixed on the circuit breaker casing through bolts. When the pressure relief device is used, when the gas pressure in the shell of the circuit breaker is too high, the gas can break the rupture disk, and the whole pressure relief device is flushed from the shell, so that once the pressure relief device is broken by the gas, a new pressure relief device needs to be replaced to continue to be used, and the use cost of the circuit breaker is increased.
Disclosure of Invention
the invention aims to provide a circuit breaker with a pressure relief function, and aims to solve the technical problem that the circuit breaker in the prior art is high in use cost.
In order to achieve the purpose, the technical scheme of the circuit breaker with the pressure relief function is as follows:
a circuit breaker with a pressure relief function, comprising:
The shell is provided with a pressure relief opening;
the pressure relief cover is covered at the pressure relief opening and is fixedly connected with the shell, and an exhaust hole communicated with the pressure relief opening is formed in the pressure relief cover;
The sealing ring is arranged at the pressure relief port;
The blocking piece is movably arranged at the pressure relief opening and used for jacking the sealing ring to block the pressure relief opening;
The elastic piece is arranged in the pressure relief cover and used for applying elastic force to the blocking piece to block the pressure relief opening;
when the air pressure in the shell is larger than the elastic force of the elastic piece to the blocking piece, the blocking piece releases the blocking of the pressure relief opening so that the pressure relief opening is communicated with the exhaust hole to relieve the pressure; when the gas pressure in the shell is smaller than the elastic force of the elastic piece to the blocking piece, the elastic piece pushes the blocking piece to block the pressure relief opening.
Has the advantages that: when the pressure of the air in the shell is larger than the elastic force of the elastic element to the blocking piece, the blocking piece pushes the elastic element to enable the vent hole to be communicated with the pressure relief opening, and the air in the shell is discharged through the vent hole to be relieved; when the pressure of the gas in the shell is reduced to be less than the elastic force applied to the blocking piece by the elastic piece, the elastic piece automatically resets to enable the blocking piece to block the pressure relief opening, so that the pressure relief structure on the breaker can be repeatedly used without replacement, and the use cost of the breaker is reduced.
Furthermore, the blocking piece is assembled in the pressure relief cover in a guiding and sliding mode along the pressure relief direction of the pressure relief opening, and the elastic piece is a spiral spring arranged in the pressure relief cover.
has the advantages that: the blocking sheet is more stable in guiding movement.
further, the pressure release cover is the tubular structure that extends along pressure release opening pressure release direction, and the pressure release cover includes along pressure release opening pressure release direction extend and with separation blade direction sliding fit's mesh barrel, the mesh on the mesh barrel forms the exhaust hole.
Has the advantages that: the pressure relief cover includes the mesh barrel, and when the relative mesh barrel direction of separation blade removed, gaseous circulation cross sectional area everywhere equals like this, and gaseous can be followed each direction and discharged from the mesh on the mesh barrel, and the more even of circulation.
Furthermore, a guide rod extending along the pressure relief direction of the pressure relief opening is installed in the pressure relief cover, a spring seat is assembled on the guide rod in a threaded mode so that the position of the spring seat in the pressure relief cover can be adjusted, one end of the spiral spring is pressed against the spring seat, and the other end of the spiral spring is pressed against the stop piece.
Has the advantages that: through the position of adjusting the spring holder on the guide bar, can adjust the elasticity that coil spring applyed to the separation blade to applicable in the circuit breaker of different grade type.
furthermore, an operation opening used for adjusting the position of the spring seat so as to adjust the elastic force applied by the spiral spring to the blocking piece is formed in the pressure relief cover.
Has the advantages that: the usable adjusting tool of manual work stretches into the pressure release cover from operation mouthful department, through the position of adjusting the spring holder, and then conveniently adjusts the elasticity that coil spring applyed to the separation blade.
Furthermore, the pressure relief cover is inserted at the pressure relief opening and is welded and fixed with the shell.
Has the advantages that: need not to set up extra fixed knot and construct, the assembly methods is simple.
furthermore, the circuit breaker with the pressure relief function also comprises a travel switch arranged in the shell, a movable head of the travel switch is in top-pressing fit with the blocking piece when the blocking piece blocks the pressure relief opening, and when the blocking piece releases the blocking of the pressure relief opening, the movable head resets and the travel switch sends a pressure relief signal; and/or the circuit breaker with the pressure relief function further comprises a pressure sensor arranged on the shell, and the pressure sensor sends out a low-voltage signal when detecting that the gas pressure in the shell is lower than a set value.
has the advantages that: when travel switch sent the pressure release signal, operating personnel just known the circuit breaker and is in the pressure release state this moment to in time operate each component in the circuit breaker, and/or when pressure sensor sent low voltage signal, operating personnel just known the circuit breaker and is in the not enough state of insulating gas this moment, in order in time to fill insulating gas in the circuit breaker casing, avoid the circuit breaker to take place short circuit phenomenon.
further, circuit breaker with pressure release function still includes the controller and sets up low pressure alarm and the pressure release alarm on the casing, controller and low pressure alarm and pressure release alarm control connection to the controller is connected with travel switch and the equal communication of pressure sensor, and pressure sensor sends low pressure signal to the controller so that the low pressure alarm of controller control reports to the police when it detects casing gas pressure and is less than the setting value, and travel switch sends the pressure release signal to the controller so that the controller control pressure release alarm reports to the police when the separation blade removes the shutoff to the pressure release mouth.
Has the advantages that: the controller controls the low-voltage alarm to give an alarm when receiving a pressure relief signal sent by the travel switch, and controls the pressure relief alarm to give an alarm when receiving a low-voltage signal sent by the pressure sensor, so that an operator can judge the state of the circuit breaker at the moment according to an alarm sound and take necessary measures to protect the normal operation of the circuit breaker.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker according to the prior art;
Fig. 2 is a schematic structural diagram of a circuit breaker with a voltage relief function according to the present invention;
fig. 3 is a cross-sectional view of a circuit breaker with a voltage relief function of the present invention (only one of the alarm assemblies is shown);
fig. 4 is a schematic structural view of an inflation valve assembly installation screw sleeve for installing an inflation valve assembly in the circuit breaker with the pressure relief function according to the present invention;
Fig. 5 is a schematic structural diagram of a gas charging valve assembly in the circuit breaker with the pressure relief function according to the present invention;
Fig. 6 is an exploded view of a pressure relief assembly in the circuit breaker with pressure relief function according to the present invention;
Fig. 7 is a schematic structural diagram of a pressure gauge assembly in the circuit breaker with a pressure relief function according to the present invention;
Fig. 8 is a schematic structural diagram of a pressure sensor assembly in the circuit breaker with the pressure relief function according to the present invention;
Fig. 9 is a schematic structural diagram of an alarm assembly in the circuit breaker with the pressure relief function according to the present invention;
FIG. 10 is a schematic view of the structure of the light-transmissive cover in FIG. 9;
Fig. 11 is a schematic structural diagram of a stroke switch in the circuit breaker with the voltage relief function according to the present invention;
Fig. 12 is a schematic diagram of an alarm circuit of the circuit breaker with a voltage relief function according to the present invention.
description of reference numerals: 1-shell, 2-inflation valve component mounting screw sleeve, 3-inflation valve component, 4-pressure relief component, 5-pressure gauge mounting screw sleeve, 6-pressure gauge component, 7-pressure sensor component, 8-pressure sensor mounting screw sleeve, 9-alarm component, 10-travel switch mounting plate, 11-travel switch, 12-pressure relief opening, 101-O type sealing ring, 102-impact piece, 103-aluminum pressure plate, 104-explosion-proof cover, 201-platform, 202-threaded hole, 203-boss, 301-O type sealing ring, 302-inflation screw sleeve, 303-air inlet valve, 304-air inlet sleeve, 401-pressure relief opening sealing ring, 402-baffle plate, 403-guide rod, 404-pressure relief cover, 405-spring seat, 406-a spiral spring, 407-an exhaust hole, 408-an operation opening, 601-a threaded sleeve, 602-a pressure gauge, 701-a pressure sensor, 702-a bonding wire copper sheet, 801-a wire through hole, 802-a light transmission hole, 901-a light transmission cover, 902-an alarm, 903-a gasket, 904-a nut, 1001-a roller, 1002-a telescopic rod, 1003-a swing arm and 1004-a switch body.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
the specific embodiment of the circuit breaker with the pressure relief function of the invention comprises the following steps:
As shown in fig. 2 to 11, the circuit breaker with the pressure relief function includes a housing 1, an inflation valve assembly 3, a pressure relief assembly 4, a pressure gauge assembly 6, a pressure sensor assembly 7, an alarm assembly 9, a controller, a travel switch mounting plate 10 disposed in the housing 1, and a travel switch 11 mounted on the travel switch mounting plate 10. Wherein, pressure release subassembly 4 and inflation valve subassembly 3 set up the front side at casing 1, and pressure sensor subassembly 7 sets up the rear side at casing 1, and manometer subassembly 6 and alarm component 9 set up the upper and lower relative both sides at casing 1 respectively, still are equipped with left and right relative arrangement's three-phase inlet wire sleeve pipe and three-phase outlet wire sleeve pipe on casing 1, still opens pressure release mouth 12 on the casing 1. The controller is in communication connection with the pressure sensor assembly 7 and the travel switch 11, and is in control connection with the alarm assembly 9.
Specifically, an inflation valve assembly mounting threaded sleeve 2 is welded on the left side shell wall of the shell 1, the structure of the inflation valve assembly mounting threaded sleeve is shown in fig. 4, a threaded hole 202 with a smaller diameter and a matching hole which is coaxial with the threaded hole 202 and has a diameter larger than that of the threaded hole are formed in the inflation valve assembly mounting threaded sleeve, a platform 201 is formed between the matching hole and the threaded hole 202, a boss 203 is further arranged at a position, far away from the matching hole, of the inflation valve assembly mounting threaded sleeve 2, and a through hole used for communicating the inner space of the shell with.
As shown in fig. 5, the inflation valve assembly 3 includes an inflation threaded sleeve 302 and an air inlet sleeve 304 which are arranged at two ends, an O-shaped sealing ring 301 is arranged on the inflation threaded sleeve 302, when the inflation threaded sleeve 302 is installed, the inflation threaded sleeve 302 is in threaded fit with the threaded hole 202, and one end of the air inlet sleeve 304 close to the inflation threaded sleeve 302 is in stop fit with the platform 201, so that the inflation valve assembly 3 and the inflation valve assembly installation threaded sleeve 2 are ensured to be sealed under the action of the O-shaped sealing ring 301. The charging valve assembly further comprises an air inlet valve 303 arranged on the air inlet sleeve 304 and used for controlling the on-off of the air inlet.
Pressure relief subassembly 4 cartridge is in pressure release port 12 department to with casing 1 welded fastening, its structure is shown in fig. 6, including being the pressure release cover 404 of tube-shape, pressure release cover 404 includes the mesh barrel that extends along pressure release port pressure release direction, the one end opening of mesh barrel, one end is sealed, open-ended one end cartridge is in pressure release port 12 department, the mesh on the mesh barrel forms and is used for the communicating exhaust hole 407 with pressure release port 12. The pressure relief assembly further comprises a pressure relief opening sealing ring 401 arranged at the pressure relief opening and a blocking piece 402 movably arranged at the pressure relief opening, and the pressure relief opening sealing ring 401 is adhered to the pressure relief opening by high-viscosity glue during installation so as to prevent the pressure relief opening from falling off. An elastic part and a guide rod 403 extending along the pressure relief direction of the pressure relief opening are arranged in the pressure relief cover 404, the guide rod 403 is a threaded rod, and the elastic part is a spiral spring 406. The guide rod 403 is screwed with a spring seat 405, one end of the coil spring 406 is pressed against the spring seat 405, and the other end is pressed against the stopper 402, so as to apply elastic force to the stopper 402 to make the stopper 402 block the pressure relief opening. The position of the spring seat 405 on the guide bar 403 can be adjusted by rotating the spring seat 405, and the elastic force of the coil spring 406 against the stopper 402 can be adjusted. When the pressure of the air in the casing is greater than the elastic force of the spiral spring 406 to the baffle 402, the air in the casing pushes the baffle 402, so that the baffle 402 moves along the pressure relief direction of the pressure relief opening and compresses the spiral spring 406, thereby the exhaust hole 407 is communicated with the pressure relief opening 12, and the air in the casing is exhausted through the exhaust hole 407 to be relieved; when the pressure of the gas in the shell is relieved and the pressure of the gas in the shell is smaller than the elastic force applied to the blocking piece 402 by the spiral spring 406, the spiral spring 406 automatically resets to enable the blocking piece 402 to block the pressure relief opening 12, so that the pressure relief assembly 4 on the circuit breaker can be repeatedly used without replacement, and the use cost of the circuit breaker is reduced. Be equipped with operation mouth 408 on the pressure release cover 404, during the in-service use, operating personnel both can be through stretching into the instrument and rotate the spring holder in operation mouth 408, also can dismantle whole circuit breaker and remove the operation spring holder, can not set up the operation mouth this moment.
The structure of the pressure gauge assembly 6 is shown in fig. 7, and comprises a pressure gauge 602 and a threaded sleeve 601 arranged at the bottom of the pressure gauge 602, wherein an O-shaped sealing ring 301 is sleeved on the threaded sleeve 601, and a pressure gauge mounting threaded sleeve 5 in threaded fit with the threaded sleeve 601 is arranged on the shell 1, so that the pressure gauge assembly is mounted on the shell 1. The pressure gauge 602 can visually display the pressure of the gas in the housing 1.
The structure of the pressure sensor assembly 7 is shown in fig. 8, and includes a pressure sensor 701 and a bonding wire copper sheet 702 respectively disposed at two ends, and further includes an O-ring 301 disposed on the pressure sensor 701, and a pressure sensor mounting screw sleeve 8 for mounting the pressure sensor 701 is disposed on the housing 1. The pressure sensor 701 can measure the pressure of the gas in the housing 1, and the measured pressure signal is transmitted to the controller.
The travel switch 11 is the prior art, has the model of YBLX-CK, and has the structure shown in fig. 11, and comprises a switch body 1004 and a movable head hinged on the switch body 1004, wherein the movable head comprises two swing arms 1003, a roller 1001 is fixed between the two swing arms 1003 through a bolt, and a telescopic rod 1002 is arranged on the switch body 1004. When the travel switch normally works, the roller compresses the telescopic rod, the roller 1001 is in top pressure fit with the blocking piece 402, when the travel switch is disconnected, the roller 1001 is separated from the blocking piece 402, the roller 1001 is released, and the telescopic rod 1002 resets.
The alarm assemblies 9 in this embodiment are provided with two sets, one set of the alarm assemblies alarms when the pressure sensor 701 detects that the pressure value of the gas in the casing is lower than a set value, and the other set of the alarm assemblies alarms when the movable head of the stroke switch is separated from the blocking piece, the two sets of the alarm assemblies have the same structure, as shown in fig. 9 and 10, each set of the alarm assemblies comprises a light-transmitting cover 901, an alarm 902, a gasket 903 and a nut 904, wherein the light-transmitting cover 901 is provided with a wire passing hole 801 and a light passing hole 802. The alarm in one set of alarm component is a low-voltage alarm, the alarm in the other set of alarm component is a pressure relief alarm, the two alarms are both flash buzzers, but the colors of light flashing by the two alarms are different so as to distinguish the two alarms.
When the circuit breaker works, the pressure gauge 602 on the circuit breaker can visually display the pressure of gas in the shell; in addition, when the pressure sensor 701 detects that the pressure value of the gas in the shell is lower than a set value, a signal is sent to the controller, the controller controls the low-pressure alarm 902 to give an alarm, a worker can judge that the pressure in the shell is insufficient at the moment, and then the shell can be inflated through the inflation valve assembly 3, so that the phenomena of short circuit and the like in the breaker are avoided; when the pressure of the air in the casing is too high and is larger than the elastic force of the spiral spring 406 to the baffle 402, the air pushes the baffle 402 to compress the spiral spring 406, so that the exhaust hole is communicated with the pressure relief opening, at this time, the movable head of the travel switch 11 is separated from the baffle 402, the travel switch outputs a pressure relief signal to the controller, the controller controls the pressure relief alarm to give an alarm, and the alarm loop of the two alarms is shown in fig. 12. In fig. 12, S1 is a pressure relief alarm, CK is a travel switch, S2 is a low voltage alarm, S is a low voltage switch connected to the low voltage alarm, the controller is connected to the low voltage switch S, and when the controller receives a low voltage signal from the pressure sensor, the controller controls the low voltage switch S to close, so that the low voltage alarm is connected to the circuit and gives an alarm. In a similar way, when the controller receives a pressure relief signal sent by the travel switch, the travel switch CK is closed in the circuit, and the pressure relief alarm is connected into the circuit to send out an alarm sound.
in the above embodiment, the separation blade is followed pressure release mouth pressure release direction slip assembly in the pressure release cover, and the elastic component is coil spring, and in other embodiments, the separation blade also can swing the assembly in the pressure release cover, and the elastic component can adopt the torsional spring this moment, and torsional spring one end is fixed with the separation blade, and one end is fixed with the pressure release cover.
In the above embodiments, one end of the coil spring is pressed against the spring seat, and the other end of the coil spring is pressed against the blocking piece.
In the above embodiments, the pressure relief cover is cylindrical, and in other embodiments, the pressure relief cover may also be made in other structures, such as a hemispherical shape.
in the above embodiments, the spring seat is screwed on the guide rod so that the position of the spring seat can be adjusted, and in other embodiments, the spring seat can also be welded on the guide rod, and at this time, the elastic force applied to the blocking piece by the spiral spring cannot be adjusted.
In the above embodiments, the pressure relief cover is inserted at the pressure relief opening and is welded and fixed with the housing, and in other embodiments, the pressure relief cover may also be connected with the housing through a connecting flange.
In the above embodiments, the circuit breaker housing is provided with the pressure sensor for low-voltage alarm and the travel switch for high-voltage alarm, and in other embodiments, only the pressure sensor may be provided, and the pressure sensor may alarm both low voltage and high voltage. Alternatively, in other embodiments, only a travel switch may be provided. Or in other embodiments, a travel switch and a pressure sensor are not arranged, the gas pressure value in the shell is directly and visually judged through the reading of a pressure gauge, and the gas pressure value needs to be manually checked at the side of the circuit breaker regularly.
Claims (8)
1. a circuit breaker with pressure relief function, comprising:
the shell is provided with a pressure relief opening;
the pressure relief cover is covered at the pressure relief opening and is fixedly connected with the shell, and an exhaust hole communicated with the pressure relief opening is formed in the pressure relief cover;
The sealing ring is arranged at the pressure relief port;
the blocking piece is movably arranged at the pressure relief opening and used for jacking the sealing ring to block the pressure relief opening;
The elastic piece is arranged in the pressure relief cover and used for applying elastic force to the blocking piece to block the pressure relief opening;
When the air pressure in the shell is larger than the elastic force of the elastic piece to the blocking piece, the blocking piece releases the blocking of the pressure relief opening so that the pressure relief opening is communicated with the exhaust hole to relieve the pressure; when the gas pressure in the shell is smaller than the elastic force of the elastic piece to the blocking piece, the elastic piece pushes the blocking piece to block the pressure relief opening.
2. the circuit breaker with pressure relief function according to claim 1, characterized in that: the blocking piece is assembled in the pressure relief cover in a guiding and sliding mode along the pressure relief direction of the pressure relief opening, and the elastic piece is a spiral spring arranged in the pressure relief cover.
3. The circuit breaker with the pressure relief function according to claim 2, wherein the pressure relief cover is a cylindrical structure extending along the pressure relief direction of the pressure relief opening, the pressure relief cover comprises a mesh cylinder extending along the pressure relief direction of the pressure relief opening and slidably engaged with the blocking piece in a guiding manner, and the mesh on the mesh cylinder forms the exhaust hole.
4. the circuit breaker with pressure relief function according to claim 2, wherein a guide rod extending along the pressure relief direction of the pressure relief opening is installed in the pressure relief cover, a spring seat is screwed on the guide rod to enable the position of the spring seat to be adjustable in the pressure relief cover, one end of the coil spring is pressed against the spring seat, and the other end of the coil spring is pressed against the stopper.
5. The circuit breaker with the pressure relief function according to claim 4, wherein the pressure relief cover is provided with an operation opening for adjusting the position of the spring seat to adjust the elastic force applied to the blocking piece by the coil spring.
6. The circuit breaker with the pressure relief function according to claim 1, 2, 3 or 4, wherein the pressure relief cover is inserted into the pressure relief opening and is welded and fixed with the housing.
7. The circuit breaker with the pressure relief function according to claim 1, 2, 3 or 4, further comprising a travel switch arranged in the housing, wherein a movable head of the travel switch is in press fit with the blocking piece when the blocking piece blocks the pressure relief opening, and when the blocking piece unblocks the pressure relief opening, the movable head resets and the travel switch sends a pressure relief signal; and/or the circuit breaker with the pressure relief function further comprises a pressure sensor arranged on the shell, and the pressure sensor sends out a low-voltage signal when detecting that the gas pressure in the shell is lower than a set value.
8. The circuit breaker with the pressure relief function according to claim 7, further comprising a controller, and a low-voltage alarm and a pressure relief alarm arranged on the housing, wherein the controller is in control connection with the low-voltage alarm and the pressure relief alarm, and is in communication connection with both the travel switch and the pressure sensor, the pressure sensor sends a low-voltage signal to the controller when detecting that the gas pressure in the housing is lower than a set value, so that the controller controls the low-voltage alarm to alarm, and the travel switch sends a pressure relief signal to the controller when the blocking piece blocks the pressure relief opening, so that the controller controls the pressure relief alarm to alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816932.6A CN110556264A (en) | 2019-08-30 | 2019-08-30 | Circuit breaker with pressure release function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816932.6A CN110556264A (en) | 2019-08-30 | 2019-08-30 | Circuit breaker with pressure release function |
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| CN110556264A true CN110556264A (en) | 2019-12-10 |
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| CN201910816932.6A Pending CN110556264A (en) | 2019-08-30 | 2019-08-30 | Circuit breaker with pressure release function |
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| CN208153796U (en) * | 2018-03-15 | 2018-11-27 | 凯迈（洛阳）气源有限公司 | A kind of relief valve |
| CN109340422A (en) * | 2018-12-10 | 2019-02-15 | 江苏盐高阀门制造有限公司 | A kind of safety valve with warning reminding function |
| CN210467678U (en) * | 2019-08-30 | 2020-05-05 | 河南华盛隆源电气有限公司 | Circuit breaker with pressure relief function |
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