CN211009050U - Hydraulic circuit breaker exhaust apparatus - Google Patents
Hydraulic circuit breaker exhaust apparatus Download PDFInfo
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- CN211009050U CN211009050U CN201921653138.6U CN201921653138U CN211009050U CN 211009050 U CN211009050 U CN 211009050U CN 201921653138 U CN201921653138 U CN 201921653138U CN 211009050 U CN211009050 U CN 211009050U
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Abstract
The utility model discloses a hydraulic circuit breaker exhaust device, which comprises an oil pump, wherein an exhaust assembly is arranged above the oil pump, the exhaust assembly comprises an air inlet pipe, a communicating pipe, a sliding block and a first floating ball, and the upper end of the communicating pipe is provided with an air inlet and an air outlet; one end of the air inlet pipe is communicated with the oil pump, and the other end of the air inlet pipe is communicated with the air inlet; the slider sets up in the communicating pipe and with communicating pipe sliding connection, and first floater setting is fixed with the slider in the oil pump and through the connecting rod, and the slider upper end is equipped with the first sealing member that is used for sealed air inlet, first sealing member and air inlet adaptation. The utility model provides a hydraulic circuit breaker exhaust device, which can realize the automatic exhaust of an oil pump and avoid the complexity of manual exhaust; the automatic exhaust device has good exhaust effect and good sealing effect.
Description
Technical Field
The utility model belongs to the technical field of high-pressure hydraulic circuit breaker and specifically relates to a hydraulic circuit breaker exhaust apparatus is related to.
Background
The high-voltage circuit breaker is used as an important component device of an electric power system, is widely applied to various transformer substations, power plants and other places, plays a vital role in industrial production and daily life of people, is one of load switches, and has short circuit and overload protection functions. For circuit breakers operating for years, the phenomenon of air entering the interior of a hydraulic system is common. The hydraulic circuit breaker in actual operation drives the oil pump through the motor and squeezes low hydraulic oil in the oil tank into the energy storage cylinder, and high hydraulic oil output by the oil pump is utilized to compress nitrogen for energy storage. In an oil pump oil circuit, oil in a low-pressure oil tank is often contacted with air, when hydraulic oil flows in the oil circuit, trace air is often brought into the oil circuit, and particularly, when the oil pump is in pressurizing circulation work, the air is more easily brought into the hydraulic oil, so that the hydraulic oil and the gas in a high-pressure oil circuit of the oil pump are mixed. If the air gathered on the upper part of the oil pump is not treated, hydraulic oil and gas are simultaneously injected into the energy storage cylinder during pressurization, so that the oil pressure of high hydraulic oil cannot reach the actual pressure value, the oil pump is caused to continuously operate, the oil pressure cannot rise, and the motor is further caused to be frequently pressurized. In the case of such a serious situation, the oil pump is impaired by gas due to the self-lubricating function of the hydraulic oil, resulting in an associated electrical failure (contactor burnout) or mechanical failure (oil pump damage). At present, there are few devices for separating hydraulic oil from gas in high-voltage hydraulic circuit breakers. Generally, the exhaust valve at the top of the oil pump is used for exhausting at regular intervals, the number of exhaust times is large every year, the operation of the circuit breakers increasing gradually is inconvenient, time and labor are wasted, and the potential safety hazard that oil leaks are damaged by the exhaust valve sealing ring at the top of the oil pump exists.
Chinese patent application publication CN102926988B, published as 2015, 08/19/2015, entitled "automatic air-bleeding device of hydraulic mechanism for circuit breaker", discloses an automatic air-bleeding device of hydraulic mechanism for circuit breaker, which comprises an oil pump, a tee joint connected to the outlet of the low-pressure oil pipe of the oil pump, one port of the tee joint connected to the oil return hole of the low-pressure oil pipe, and the other port connected to the oil tank; an exhaust bolt is installed at the outlet of a low-pressure oil pipe of the oil pump and connected to the tee joint, one port of the tee joint is connected to an oil return hole of the low-pressure oil pipe through a newly-added pipeline, and the other port of the tee joint is connected to an exhaust screw at the upper part of the oil tank through a pipeline; the gas collecting device has the characteristics of convenience in installation, reliability in gas exhaust, capability of normally suppressing (frequently starting) a circuit breaker oil pump due to gas collection, capability of normally suppressing and the like. However, the gas in the patent returns to the oil tank again and cannot be discharged out of the device, and the exhaust effect is not ideal because the exhaust pipeline and the oil suction pipeline are partially overlapped.
Disclosure of Invention
The utility model discloses an invention purpose is: the exhaust device of the hydraulic circuit breaker is capable of achieving automatic exhaust of an oil pump and avoiding complexity of manual exhaust; the automatic exhaust device has good exhaust effect and good sealing effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an exhaust device of a hydraulic circuit breaker comprises an oil pump, wherein an exhaust assembly is arranged above the oil pump, the exhaust assembly comprises an air inlet pipe, a communicating pipe, a sliding block and a first floating ball, and the upper end of the communicating pipe is provided with an air inlet and an air outlet; one end of the air inlet pipe is communicated with the oil pump, and the other end of the air inlet pipe is communicated with the air inlet; the slider sets up in the communicating pipe and with communicating pipe sliding connection, and first floater setting is fixed with the slider in the oil pump and through the connecting rod, and the slider upper end is equipped with first sealing member and the second sealing member that is used for sealed air inlet and gas outlet respectively, first sealing member and air inlet adaptation, second sealing member and gas outlet adaptation.
Above-mentioned technical scheme can avoid gas mixing in hydraulic oil gets into the energy storage section of thick bamboo automatically with the gas outgoing in the circuit breaker oil pump, causes high hydraulic oil pressure to reach the pressure value of reality to arouse the oil pump and continue to operate and the condition that the oil pressure can not rise, and then cause the motor to frequently suppress. When air is gathered above the oil pump, the liquid level in the oil pump descends, the first floating ball descends along with the liquid level under the action of gravity, the sliding block slides downwards, the air inlet is communicated with the air outlet, redundant air sequentially passes through the air inlet pipe, the communicating pipe and the air outlet to discharge the oil pump, when the air is discharged, the liquid level rises, the first floating ball drives the sliding block to rise under the action of buoyancy, the air inlet and the air outlet are blocked again by the first sealing element and the second sealing element, and the automatic exhaust device stops exhausting. Above-mentioned device has realized the self-bleeding of oil pump, has avoided artifical carminative loaded down with trivial details, and because air inlet and gas outlet set up simultaneously in the upper end of communicating pipe, when first floater rises, air inlet and gas outlet are plugged up simultaneously to first sealing member and second sealing member, and under the buoyancy, can compress tightly air inlet and gas outlet always, and the lower extreme of communicating pipe need not seal, even direct also has fine sealed effect with the oil pump intercommunication. Compared with the scheme of opening the hole on the side surface of the communicating pipe, the scheme increases the sealing effect; the communicating pipe is provided with the hole on the side surface thereof to achieve a good sealing effect, and the cost is increased due to the fact that the hole needs to be machined at a high precision, so that the scheme also has the advantage of low machining cost.
Preferably, the lower end of the communicating pipe is communicated with an oil pump. The hydraulic oil in the oil pump has certain pressure, when the structure buoyancy is sealed, the pressure (the pressure in the oil pump) at the lower end of the sliding block is greater than the pressure (the pressure in the oil pump is intermediate to the atmospheric pressure, and the specific numerical value is related to the size of the air inlet and the air outlet) at the upper end, even if the pressure in the oil pump is increased, the force generated by the pressure is also upward relative to the sliding block, so that the air inlet and the air outlet can be more tightly pressed by the first sealing element and the second sealing element, the sealing effect is better, and the leakage of the hydraulic.
Preferably, the first sealing element comprises a rigid inner core and an elastic outer sleeve, the elastic outer sleeve is fixed with the rigid inner core, and the rigid inner core is fixed with the sliding block. The structure of the second sealing element is the same as that of the first sealing element, and the rigid inner core can ensure the integral strength of the first sealing element.
Preferably, the cross section of the communication pipe is elliptical or polygonal, and the cross section of the slider is matched with the cross section of the communication pipe. The cross section of the communicating pipe can be other non-revolving bodies which can prevent the sliding block from rotating in the communicating pipe, so that the corresponding relation between the first sealing element and the second sealing element and the air inlet and the air outlet is ensured, and the sealing effect is further ensured
Preferably, the first and second seals are identical in shape and size, and the air inlet and the air outlet are identical in shape and size. The structure can increase the interchangeability of the first sealing element and the second sealing element, is convenient to install, does not need to distinguish the corresponding relation between the first sealing element and the second sealing element as well as the air inlet and the air outlet during installation, and can be directly installed.
Preferably, the first sealing element is in a shape of a circular truncated cone, a small end of the circular truncated cone faces the air inlet, and the shape of the air inlet is matched with that of the first sealing element. The structure can enhance the sealing effect at the air inlet, and can ensure the sealing performance even if small abrasion occurs.
Preferably, the connecting rod (2.8) is vertically fixed on the bottom surface of the sliding block (2.4).
Preferably, the second sealing element is in a circular truncated cone shape, the small end of the circular truncated cone shape faces the air outlet, and the shape of the air outlet is matched with that of the second sealing element. The structure can enhance the sealing effect at the air outlet, and can ensure the sealing performance even if small abrasion occurs.
Preferably, the oil pump includes pump body and gas collection tank, and the gas collection tank sets up at pump body top, and gas collection tank bottom and pump body intercommunication, intake pipe and gas collection tank intercommunication, and first floater sets up in the gas collection tank. The structure can avoid the accumulation of gas in the pump body and influence on use.
Preferably, a liquid level display tube is arranged outside the gas collection tank, and the upper end and the lower end of the liquid level display tube are communicated with the gas collection tank. The structure can show liquid level height, and then reflects the gas volume, makes things convenient for the staff to look over.
Preferably, the pump body is provided with an external threaded pipe, the bottom of the gas collecting tank is provided with an internal threaded hole matched with the external threaded pipe, and the gas collecting tank is communicated with the pump body through the external threaded pipe. The structure can make the gas collecting tank directly with the pump body on original external screw thread union coupling, and then the convenience to current oil pump install additional can, reform transform with low costs.
Preferably, the device further comprises a hysteresis assembly, the hysteresis assembly comprises a second floating ball, an unlocking block, a locking block, a fixed block and a telescopic spring, the fixed block is provided with a first sliding groove and a second sliding groove which are mutually communicated, the first sliding groove is vertically arranged, and the unlocking block is slidably arranged in the first sliding groove; the second spout transversely sets up, and latch segment slidable ground sets up at the second spout, and expanding spring sets up in the second spout, and expanding spring's one end is connected with the latch segment, and expanding spring's the other end is connected with the fixed block, and the second spout communicates with communicating pipe, is equipped with on the latch segment and dodges the groove, is equipped with the unblock inclined plane on the latch segment.
The hysteresis assembly in the technical scheme can play a hysteresis role, and avoids the frequent opening and closing of the automatic exhaust device to cause abrasion, so that the sealing effect of the first sealing element and the second sealing element is weakened. When gas increases in the oil pump, the liquid level descends, the sliding block is blocked by the locking block and cannot descend at the moment, the second floating ball descends under the action of gravity, the unlocking block pushes the locking block to move transversely, after the second floating ball descends to a certain height, the avoiding groove in the locking block moves to the position below the sliding block, the sliding block can descend through the avoiding groove, and the exhaust device exhausts gas at the moment. When the gas is discharged, the liquid level slowly rises, and the first floating ball slowly rises under the action of buoyancy, and finally the gas inlet and the gas outlet are blocked. The second floater also rises, and the unblock piece rises the back, and the locking effect to the latch segment disappears, and when first floater rises the back, the latch segment stretches out under the spring action, locks the slider. Because the first sealing element and the second sealing element have certain elasticity, even if the floating ball loses buoyancy, the exhaust device still has good air tightness under the locking of the locking block.
Preferably, when the slide block descends to the lowest position, the sliding side surface is still in contact with the locking block. The structure can guarantee that the locking block can not stretch out after the sliding block descends, and the sliding block can freely move up and down before returning to the sealing position.
Preferably, the locking block is provided with a second inclined surface, the second inclined surface faces obliquely downwards, and the second inclined surface is in contact with the sliding block. The structure can ensure that the sliding block is not locked by the locking block when the sliding block ascends.
Preferably, the air inlet and the air outlet are of uniform height.
The utility model has the advantages that: (1) the automatic exhaust of the oil pump is realized, and the complexity of manual exhaust is avoided; (2) the automatic exhaust device has good sealing effect; (3) the slide block is simple to mount; (4) the automatic exhaust is directly connected with the original external thread pipe on the pump body, so that the existing oil pump can be conveniently installed, and the transformation cost is low; (5) the hysteresis assembly can play the hysteresis, avoids automatic exhaust apparatus frequent switching, causes wearing and tearing, leads to first sealing member and second sealing member sealed effect to weaken.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural diagram of a locking block of the present invention;
FIG. 4 is a partial structural view of embodiment 3;
FIG. 5 is a partial structural view of embodiment 4.
In the figure: the oil pump comprises an oil pump 1, a pump body 1.1, an external threaded pipe 1.1.1, a gas collecting tank 1.2, an internal threaded hole 1.2.1, a liquid level display pipe 1.3, an exhaust assembly 2, an air inlet pipe 2.1, a communicating pipe 2.2, an air inlet 2.2.1, an air outlet 2.2.2, a sliding block 2.4, a first floating ball 2.5, a first sealing element 2.6, a rigid inner core 2.6.1, an elastic outer sleeve 2.6.2, a second sealing element 2.7, a connecting rod 2.8, a hysteresis assembly 3, a second floating ball 3.1, an unlocking block 3.2, an unlocking inclined plane 3.2.1, a locking block 3.3, an avoiding groove 3.3.1, a second inclined plane 3.3.2, a fixing block 3.4, a first sliding groove 3.4.1, a second sliding groove 3.4.2 and a telescopic spring 3.5.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1 and 2, an exhaust device of a hydraulic circuit breaker comprises an oil pump 1, wherein the oil pump 1 comprises a pump body 1.1 and a gas collection tank 1.2, the gas collection tank 1.2 is arranged at the top of the pump body 1.1, an external threaded pipe 1.1.1 is arranged on the pump body 1.1, an internal threaded hole 1.2.1 matched with the external threaded pipe 1.1.1 is arranged at the bottom of the gas collection tank 1.2, the gas collection tank 1.2 is communicated with the pump body 1.1 through the external threaded pipe 1.1.1, and a liquid level display pipe 1.3 is arranged outside the gas collection tank 1.2; an exhaust assembly 2 is arranged above the gas collecting tank 1.2, and the exhaust assembly 2 comprises an air inlet pipe 2.1, a communicating pipe 2.2, a sliding block 2.4 and a first floating ball 2.5;
the upper end of the communicating pipe 2.2 is provided with an air inlet 2.2.1 and an air outlet 2.2.2, the lower end of the communicating pipe 2.2 is communicated with the gas collecting tank 1.2, and the cross section of the communicating pipe 2.2 is oval; one end of the air inlet pipe 2.1 is communicated with the air collecting tank 1.2, and the other end of the air inlet pipe 2.1 is communicated with the air inlet 2.2.1;
the slider 2.4 is arranged in the communicating pipe 2.2 and is in sliding connection with the communicating pipe 2.2, the cross section of the slider 2.4 is oval, and the cross section shape of the slider 2.4 is matched with that of the communicating pipe 2.2; the first floating ball 2.5 is arranged in the gas collecting tank 1.2 and is fixed with the sliding block 2.4 through a connecting rod 2.8; a first sealing element 2.6 and a second sealing element 2.7 which are respectively used for sealing the air inlet 2.2.1 and the air outlet 2.2.2 are fixed at the upper end of the sliding block 2.4, the first sealing element 2.6 is in a circular truncated cone shape, the small end of the circular truncated cone shape faces the air inlet 2.2.1, and the shape of the air inlet 2.2.1 is matched with that of the first sealing element 2.6; the first sealing element 2.6 comprises a rigid inner core 2.6.1 and an elastic outer sleeve 2.6.2, the elastic outer sleeve 2.6.2 is fixed with the rigid inner core 2.6.1, and the rigid inner core 2.6.1 is fixed with the sliding block 2.4; the second sealing element 2.7 is matched with the air outlet 2.2.2; the first sealing element 2.6 and the second sealing element 2.7 are the same in shape and size, and the air inlet 2.2.1 and the air outlet 2.2.2 are the same in shape and size.
Above-mentioned technical scheme can be automatically with the gas outgoing in the circuit breaker oil pump 1, avoids gas mixing in hydraulic oil gets into the energy storage section of thick bamboo, causes high hydraulic oil pressure to reach the pressure value of reality to arouse that oil pump 1 lasts the condition that operates and the oil pressure can not rise, and then cause the motor to frequently suppress. When air is gathered above the oil pump 1, the liquid level in the oil pump 1 descends, the first floating ball 2.5 descends under the action of gravity, the sliding block 2.4 slides downwards, the air inlet 2.2.1 is communicated with the air outlet 2.2.2, redundant air sequentially passes through the air inlet pipe 2.1, the communicating pipe 2.2 and the air outlet 2.2.2 to be discharged out of the oil pump 1, when the air is discharged, the liquid level rises, the first floating ball 2.5 drives the sliding block 2.4 to rise under the action of buoyancy, the air inlet 2.2.1 and the air outlet 2.2.2 are blocked again by the first sealing element 2.6 and the second sealing element 2.7, and the automatic exhaust device stops exhausting. Above-mentioned device has realized oil pump 1's self-bleeding, the loaded down with trivial details of artifical exhaust has been avoided, and because air inlet 2.2.1 and gas outlet 2.2.2 set up simultaneously in the upper end of communicating pipe 2.2, when first floater 2.5 rose, air inlet 2.2.1 and gas outlet 2.2.2 are plugged up simultaneously to first sealing member 2.6 and second sealing member 2.7, and under the buoyancy, can compress tightly air inlet 2.2.1 and gas outlet 2.2.2 always, communicating pipe 2.2 lower extreme need not seal, even direct and oil pump 1 intercommunication also has fine sealed effect. The hydraulic oil in the oil pump 1 has certain pressure intensity, when the structure is in buoyancy sealing, when the pressure intensity at the lower end of the sliding block 2.4 (the pressure intensity at the lower end is equal to the pressure intensity in the oil pump 1) is larger than the pressure intensity at the upper end (the pressure intensity at the upper end is equal to the middle value of the pressure intensity in the oil pump 1 and the atmospheric pressure, and the specific numerical value is related to the sizes of the air inlet 2.2.1 and the air outlet 2.2.2), even if the pressure intensity in the oil pump 1 is increased, the force generated by the pressure intensity is upward relative to the sliding block 2.4, the air inlet 2.2.1 and the air outlet 2.2.2.2 can be further pressed by the first sealing element 2.. Compared with the scheme of opening the side surface of the communicating pipe 2.2, the scheme increases the sealing effect; the communicating pipe 2.2 is provided with the hole on the side surface to achieve a better sealing effect, higher processing precision is needed, and cost is increased, so that the scheme also has the advantage of lower processing cost.
Example 2:
as shown in fig. 2 and 3, on the basis of embodiment 1, the hydraulic brake further comprises a hysteresis assembly 3, the hysteresis assembly 3 comprises a second floating ball 3.1, an unlocking block 3.2, a locking block 3.3, a fixed block 3.4 and a telescopic spring 3.5, the fixed block 3.4 is provided with a first chute 3.4.1 and a second chute 3.4.2 which are communicated with each other, the first chute 3.4.1 is vertically arranged, and the unlocking block 3.2 is slidably arranged in the first chute 3.4.1; second spout 3.4.2 transversely sets up, latch segment 3.3 slidable ground sets up at second spout 3.4.2, expanding spring 3.5 sets up in second spout 3.4.2, expanding spring 3.5's one end is connected with latch segment 3.3, expanding spring 3.5's the other end is connected with fixed block 3.4, second spout 3.4.2 and 2.2 intercommunications of communicating pipe, be equipped with on the latch segment 3.3 and dodge groove 3.3.1, be equipped with unblock inclined plane 3.2.1 on the latch segment 3.2.
Example 3:
as shown in fig. 4, in the embodiment 2, when the slide block 2.4 is lowered to the lowest position, the slide side surface is still in contact with the locking block 3.3. The structure can guarantee that the locking block 3.3 can not extend out after the sliding block 2.4 descends, and the sliding block 2.4 can freely move up and down before returning to the sealing position.
Example 4:
as shown in fig. 5, in embodiment 2, a second inclined surface 3.3.2 is provided on the locking block 3.3, the second inclined surface 3.3.2 faces obliquely downward, and the second inclined surface 3.3.2 contacts with the slider 2.4. The structure can ensure that the slide block 2.4 is not locked by the locking block 3.3 when rising.
The utility model has the advantages that: the automatic exhaust of the oil pump is realized, and the complexity of manual exhaust is avoided; the automatic exhaust device has good sealing effect; the slide block is simple to mount; the automatic exhaust is directly connected with the original external thread pipe on the pump body, so that the existing oil pump can be conveniently installed, and the transformation cost is low; the hysteresis assembly can play the hysteresis, avoids automatic exhaust apparatus frequent switching, causes wearing and tearing, leads to first sealing member and second sealing member sealed effect to weaken.
Claims (10)
1. An exhaust device of a hydraulic circuit breaker comprises an oil pump (1) and is characterized in that an exhaust assembly (2) is arranged above the oil pump (1), the exhaust assembly (2) comprises an air inlet pipe (2.1), a communicating pipe (2.2), a sliding block (2.4) and a first floating ball (2.5), and the upper end of the communicating pipe (2.2) is provided with an air inlet (2.2.1) and an air outlet (2.2.2); one end of the air inlet pipe (2.1) is communicated with the oil pump (1), and the other end of the air inlet pipe (2.1) is communicated with the air inlet (2.2.1); slider (2.4) set up in communicating pipe (2.2) and with communicating pipe (2.2) sliding connection, first floater (2.5) set up in oil pump (1) and fixed with slider (2.4) through connecting rod (2.8), slider (2.4) upper end is equipped with first sealing member (2.6) that are used for sealed air inlet (2.2.1), first sealing member (2.6) and air inlet (2.2.1) adaptation.
2. A hydraulic circuit breaker venting device according to claim 1, characterized in that the upper end of the slider (2.4) is provided with a second sealing member (2.7) for sealing the outlet (2.2.2), the second sealing member (2.7) being adapted to the outlet (2.2.2).
3. A hydraulic circuit breaker bleed device according to claim 1, characterised in that the first seal (2.6) comprises a rigid core (2.6.1) and an elastic outer sleeve (2.6.2), the elastic outer sleeve (2.6.2) being fixed to the rigid core (2.6.1) and the rigid core (2.6.1) being fixed to the slider (2.4).
4. A hydraulic circuit breaker exhaust device according to claim 1, characterized in that the cross section of the communicating pipe (2.2) is elliptical or polygonal, and the cross section of the slider (2.4) is adapted to the cross section of the communicating pipe (2.2).
5. A hydraulic circuit breaker bleed device according to claim 2 characterised in that the first seal (2.6) and the second seal (2.7) are of the same shape and size.
6. A hydraulic circuit breaker venting device according to claim 1 or 2 or 3 or 4, characterized in that the first sealing member (2.6) is shaped as a circular truncated cone, the small end of the circular truncated cone facing the inlet (2.2.1), the shape of the inlet (2.2.1) being adapted to the shape of the first sealing member (2.6).
7. A hydraulic circuit breaker bleed device according to claim 1 or 2 or 3 or 4, characterised in that the tie rod (2.8) is fixed vertically to the underside of the slider (2.4).
8. A hydraulic circuit breaker exhaust device according to claim 1 or 2 or 3 or 4, characterized in that the oil pump (1) comprises a pump body (1.1) and a gas collection tank (1.2), the gas collection tank (1.2) is arranged at the top of the pump body (1.1), the bottom of the gas collection tank (1.2) is communicated with the pump body (1.1), the gas inlet pipe (2.1) is communicated with the gas collection tank (1.2), and the first floating ball (2.5) is arranged in the gas collection tank (1.2).
9. A hydraulic circuit breaker exhaust device according to claim 8, characterized in that a liquid level display tube (1.3) is arranged outside the gas collection tank (1.2), and the upper end and the lower end of the liquid level display tube (1.3) are communicated with the gas collection tank (1.2).
10. A hydraulic circuit breaker bleed device according to claim 1 or 2 or 3 or 4, characterised in that the inlet (2.2.1) and outlet (2.2.2) ports are of uniform height.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921653138.6U CN211009050U (en) | 2019-09-30 | 2019-09-30 | Hydraulic circuit breaker exhaust apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921653138.6U CN211009050U (en) | 2019-09-30 | 2019-09-30 | Hydraulic circuit breaker exhaust apparatus |
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| CN211009050U true CN211009050U (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953385A (en) * | 2019-09-30 | 2020-04-03 | 国网浙江省电力有限公司嘉兴供电公司 | Automatic exhaust device of hydraulic circuit breaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953385A (en) * | 2019-09-30 | 2020-04-03 | 国网浙江省电力有限公司嘉兴供电公司 | Automatic exhaust device of hydraulic circuit breaker |
| CN110953385B (en) * | 2019-09-30 | 2022-01-25 | 国网浙江省电力有限公司嘉兴供电公司 | Automatic exhaust device of hydraulic circuit breaker |
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