CN215928494U - Circuit breaker connecting valve - Google Patents

Abstract

The utility model provides a circuit breaker connecting valve, which is used for controlling the on-off of a gas circuit between a density relay and an arc extinguish chamber of a circuit breaker, and comprises: the valve comprises a shell, a valve core and a direction adjusting piece; the shell is provided with an air inlet hole, a first exhaust hole and a second exhaust hole, the air inlet hole is communicated with the gas charging pipe, the first exhaust hole is communicated with the density relay, and the second exhaust hole is communicated with an arc extinguish chamber of the circuit breaker; the valve core is positioned in the cavity in the shell, and the air inlet hole, the first exhaust hole and the second exhaust hole are communicated with the cavity; when the valve core is driven by the direction adjusting piece to rotate to the first position, the valve core is communicated with the air inlet hole, the first exhaust hole and the second exhaust hole, so that the air passage between the density relay and the arc extinguish chamber is communicated; when the valve core is driven by the direction adjusting piece to rotate to the second position, the valve core seals the second exhaust hole and is communicated with the air inlet hole and the first exhaust hole so as to disconnect an air path between the density relay and the arc extinguish chamber. This scheme can reduce the impaired risk of circuit breaker coupling valve.

Description

Circuit breaker connecting valve

Technical Field

The application relates to the technical field of mechanical engineering, in particular to a circuit breaker connecting valve.

Background

The density relay is important protection and control element among the electric power system, if the circuit breaker breaks down, will cause great economic loss, in order to guarantee that the circuit breaker can reliably operate, need pass through the operation index of density relay monitoring circuit breaker to confirm the running state of circuit breaker according to the operation index of circuit breaker, in time handle when the circuit breaker appears the operation unusually. After the density relay works for a period of time, the monitoring precision of the density relay is reduced, so that the density relay needs to be checked regularly.

The density relay is linked together through the circuit breaker connecting valve with the explosion chamber of circuit breaker, when carrying out the check-up to the density relay, need pull down the density relay from the circuit breaker connecting valve to break off the gas circuit between the explosion chamber of density relay and circuit breaker, after finishing the check-up to the density relay, be connected to the circuit breaker connecting valve with the density relay again on, communicate with the gas circuit between switch-on density relay and the explosion chamber.

However, when the density relay is connected to the breaker connection valve, the breaker connection valve is easily damaged due to the influence of the air flow in the breaker connection valve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a breaker connecting valve for solving the problems, which can reduce the risk of damage of the breaker connecting valve.

In a first aspect, an embodiment of the present application provides a circuit breaker connecting valve for controlling the make-and-break of a gas path between an arc extinguish chamber of a density relay and a circuit breaker, the circuit breaker connecting valve includes: the valve comprises a shell, a valve core and a direction adjusting piece;

the shell is provided with an air inlet hole, a first exhaust hole and a second exhaust hole, the air inlet hole is communicated with an inflation tube, the first exhaust hole is communicated with a density relay, the second exhaust hole is communicated with an arc extinguish chamber of a circuit breaker, and the inflation tube is used for conveying a gas insulating medium to the density relay and the arc extinguish chamber;

a cavity is arranged in the shell, the air inlet hole, the first exhaust hole and the second exhaust hole are communicated with the cavity, the valve core is arranged in the cavity, and the direction adjusting piece penetrates through a first connecting hole in the shell to be connected with the valve core;

when the direction adjusting piece drives the valve core to rotate to a first position in the cavity around the axis direction of the direction adjusting piece, the valve core is communicated with the air inlet hole, the first exhaust hole and the second exhaust hole, so that the gas insulation medium in the gas filling pipe flows to the density relay and the arc extinguishing chamber and is communicated with the gas path between the density relay and the arc extinguishing chamber;

when the direction adjusting piece drives the valve core to rotate to a second position in the cavity around the axis direction of the direction adjusting piece, the valve core seals the second exhaust hole and is communicated with the air inlet hole and the first exhaust hole so as to break an air path between the density relay and the arc extinguish chamber.

In a first possible implementation manner, with reference to the first aspect, the casing has a cubic structure, and the air inlet hole, the first exhaust hole, and the second exhaust hole are disposed on three mutually adjacent surfaces of the casing; the first connecting hole and the air inlet hole are located on two opposite surfaces of the shell.

In a second possible implementation manner, with reference to the first possible implementation manner, the valve element is a spherical structure, the cavity is a spherical cavity, and the diameter of the valve element is smaller than or equal to the diameter of the cavity;

the valve core is provided with a first vent hole and a second vent hole, the first vent hole is a through hole taking the diameter of the valve core as an axis, the second vent hole is communicated with the first vent hole, the second vent hole takes the radius of the valve core as an axis, and the axis of the first vent hole is vertical to the axis of the second vent hole;

a first sealing ring is arranged between the valve core and the second exhaust hole;

when the direction regulating piece drives the valve core to rotate to a first position in the cavity around the axis direction of the direction regulating piece, the first vent hole is communicated with the second vent hole, the second vent hole is communicated with the air inlet hole, and the first vent hole is communicated with the first vent hole through a gap between the valve core and the cavity;

when the direction adjusting piece drives the valve core to rotate to a second position in the cavity around the axis direction of the direction adjusting piece, the first vent hole is communicated with the first exhaust hole, the second vent hole is communicated with the air inlet hole, and the second exhaust hole is sealed by the imperforate area on the valve core and the first sealing ring.

In a third possible implementation manner, with reference to the second possible implementation manner, the circuit breaker connection valve further includes: a support and a second seal ring;

the shell is provided with a second connecting hole, and the second connecting hole and the second exhaust hole are positioned on two opposite surfaces of the shell;

a blind hole is formed in the first end of the supporting piece, and the first end of the second sealing ring is located in the blind hole;

the first end of the supporting piece penetrates through the second connecting hole, and the second end of the second sealing ring is in contact with the valve core, so that the circle center of the valve core is overlapped with the circle center of the cavity.

In a fourth possible implementation manner, with reference to the third possible implementation manner, the circuit breaker connection valve further includes: a third seal ring;

a flange is arranged at the second end of the supporting piece, the third sealing ring is sleeved on the supporting piece, and the third sealing ring is in contact with the flange;

and the third sealing ring is clamped between the flange and the surface of the shell where the second connecting hole is located.

In a fifth possible implementation manner, with reference to the third possible implementation manner, a first contact surface, which is on the first seal ring and is in contact with the valve element, is a curved surface, and a diameter of the first contact surface is equal to a diameter of the valve element; and a second contact surface, which is contacted with the valve core, on the second sealing ring is a curved surface, and the diameter of the second contact surface is equal to that of the valve core.

In a sixth possible implementation manner, with reference to the first aspect or any one of the possible implementation manners of the first aspect, the direction-adjusting piece includes: a knob and a connecting rod;

the straight-line-shaped groove arranged on the valve core is matched with the straight-line-shaped boss arranged at the first end of the connecting rod;

the knob is arranged outside the shell and is connected with the second end of the connecting rod;

the axis of the connecting rod is the axis of the direction adjusting piece;

when the knob is manually rotated, the knob drives the connecting rod to rotate around the axis direction of the connecting rod, and the connecting rod drives the valve core to rotate to the first position or the second position around the axis direction of the connecting rod in a rotating mode.

In a seventh possible implementation manner, in combination with the sixth possible implementation manner, the knob is provided with a first alignment hole, and a second alignment hole and a third alignment hole are provided on a surface of the housing where the first connection hole is located;

when the direction-adjusting piece drives the valve core to rotate to a first position in the cavity around the axial direction of the direction-adjusting piece, the first aligning hole is aligned with the second aligning hole, and a screw passing through the first aligning hole and the second aligning hole limits the relative position of the knob and the shell, so that the valve core is kept at the first position;

when the direction-adjusting piece drives the valve core to rotate to a second position in the cavity around the axial direction of the direction-adjusting piece, the first alignment hole is aligned with the third alignment hole, and a screw passing through the first alignment hole and the third alignment hole limits the relative position of the knob and the shell, so that the valve core is kept at the second position.

According to the technical scheme, the valve element can rotate in the cavity of the shell under the driving of the direction adjusting element, when the direction adjusting element drives the valve element to rotate to the first position, the valve element is communicated with the air inlet hole, the first exhaust hole and the second exhaust hole, so that a gas insulation medium in the gas filling pipe can flow to the density relay and the arc extinguish chamber and is communicated with an air passage between the density relay and the arc extinguish chamber, when the direction adjusting element drives the valve element to rotate to the second position, the valve element seals the second exhaust hole and is communicated with the air inlet hole and the first exhaust hole, and the air passage between the density relay and the arc extinguish chamber is disconnected. From this, in-process that the density relay monitored the circuit breaker, it is rotatory to the first position with the case, make density relay and explosion chamber be linked together, thereby density relay can detect the circuit breaker, when needs are proofreaded density relay, rotatory to the second position with the case, seal the second exhaust hole, with the gas circuit between disconnection density relay and the explosion chamber, seal gas-insulated medium in the explosion chamber, later can look into down from the circuit breaker connecting valve with density relay and calibrate, because first exhaust hole has the same atmospheric pressure with the casing outside, can not receive the influence of air current when the density relay after with the calibration communicates with first exhaust hole, avoided the circuit breaker connecting valve to damage because the effect of air current.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a circuit breaker connection valve according to an embodiment of the present invention;

fig. 2 is a schematic diagram of another circuit breaker connecting valve provided in the first embodiment of the utility model;

FIG. 3 is a schematic view of a valve cartridge provided in accordance with a second embodiment of the present invention;

fig. 4 is a schematic diagram of a circuit breaker connection valve according to a second embodiment of the present invention;

FIG. 5 is a schematic view of a sealing ring according to a second embodiment of the present invention;

FIG. 6 is a schematic view of a direction-adjusting member provided in the third embodiment of the present invention;

fig. 7 is a schematic diagram of a circuit breaker connection valve according to a third embodiment of the present invention.

List of reference numerals:

1: a housing 2: a valve core 3: direction adjusting piece

4: the supporting part 5: second seal ring 6: third seal ring

7: first seal ring 11: the air intake holes 12: a first exhaust hole

13: second exhaust hole 14: second aligning hole 15: third alignment hole

21: first vent hole 22: second ventilation hole 23: straight line type groove

31: the knob 32: connecting rod 41: flange

51: first contact surface 71: second contact surface 311: a first alignment hole

321: straight-line-shaped boss

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

As mentioned above, the density relay is communicated with the arc extinguish chamber of the circuit breaker through the circuit breaker connecting valve, the gas insulation medium (for example, sulfur hexafluoride gas) flows through the circuit breaker connecting valve and is conveyed to the arc extinguish chamber of the circuit breaker, and the density relay monitors the circuit breaker by monitoring various indexes of the gas insulation medium in the circuit breaker connecting valve. A valve core and a sealing ring are arranged on a gas path used for communicating a density relay with an arc extinguish chamber in an existing circuit breaker connecting valve, wherein the sealing ring is sleeved on the valve core, and the gas path between the density relay and the arc extinguish chamber can be disconnected or communicated by adjusting the position of the valve core. The in-process that removes at the case can receive the influence of air current for the position of sealing washer on the case takes place to remove, leads to the circuit breaker to connect the valve and damages, makes the unable gas circuit that seals between density relay and the explosion chamber of case, and then leads to the condition that the explosion chamber appears leaking gas.

In the embodiment of this application, the circuit breaker connecting valve includes the casing, case and accent to the piece, inlet port and gas tube on the casing are linked together, first exhaust hole on the casing is linked together with density relay, second exhaust hole on the casing is linked together with the explosion chamber of circuit breaker, when transferring to when piece drive valve core rotation to first position, case intercommunication inlet port, first exhaust hole and second exhaust hole, make density relay and explosion chamber be linked together, when transferring to when piece drive valve core rotation to second position, the case seals second exhaust hole and feeds through inlet port and first exhaust hole. Therefore, when the density relay monitors the operation index of the circuit breaker, the valve core is rotated to the first position, the density relay is communicated with the arc extinguish chamber, when the density relay needs to be calibrated, the valve core is rotated to the second position, an air passage between the density relay and the arc extinguish chamber is cut off, a gas insulation medium is sealed in the arc extinguish chamber, after the density relay is detached from the circuit breaker connecting valve for calibration, because the first exhaust hole and the shell are provided with the same air pressure, the density relay and the first exhaust hole can not be influenced by air flow when being communicated, and the circuit breaker connecting valve is prevented from being damaged due to the action of the air flow. After the density relay is connected to the connecting valve of the circuit breaker, the valve core is rotated to the first position, the gas filling pipe fills gas into the density relay, and a gas circuit between the density relay and the arc extinguish chamber is switched on, so that the density relay monitors the operation index of the circuit breaker.

The circuit breaker connecting valve provided by the embodiment of the application is described in detail below with reference to the accompanying drawings.

Example one

Fig. 1 and fig. 2 are schematic diagrams of a circuit breaker connection valve according to a first embodiment of the present disclosure. The circuit breaker connecting valve that this application embodiment provided is used for controlling the break-make of gas circuit between the explosion chamber of density relay and circuit breaker, refer to fig. 1 and fig. 2, and this circuit breaker connecting valve includes: the valve comprises a shell 1, a valve core 2 and a direction adjusting piece 3;

an air inlet 11, a first exhaust hole 12 and a second exhaust hole 13 are arranged on the shell 1, wherein the air inlet 11 is communicated with an air charging pipe, the first exhaust hole 12 is communicated with the density relay, the second exhaust hole 13 is communicated with an arc extinguish chamber of the circuit breaker, and the air charging pipe is used for conveying a gas insulating medium to the arc extinguish chamber of the density relay and the circuit breaker;

a cavity is arranged in the shell 1, an air inlet hole 11, a first exhaust hole 12 and a second exhaust hole 13 are communicated with the cavity, the valve core 2 is arranged in the cavity, and the direction adjusting piece 3 penetrates through a first connecting hole in the shell 1 to be connected with the valve core 2;

when the valve core 2 driven by the direction adjusting piece 3 rotates to a first position in the cavity of the shell along the axial direction of the direction adjusting piece 3, the valve core 2 is communicated with the air inlet 11, the first exhaust hole 12 and the second exhaust hole 13, so that the gas insulating medium in the gas filled tube flows to the density relay and the arc extinguish chamber and is communicated with the gas path between the density relay and the arc extinguish chamber;

when the direction regulating piece 3 drives the valve core 2 to rotate to a second position in the cavity of the shell around the axial direction of the direction regulating piece 3, the valve core 2 seals the second exhaust hole 13 and is communicated with the air inlet hole 11 and the first exhaust hole 12 so as to disconnect an air path between the density relay and the arc extinguishing chamber.

In this application embodiment, case 2 can be in the cavity internal rotation of casing 1 under the drive of transfer to piece 3, when transfer to piece 3 drive case 2 rotatory to the first position, case 2 intercommunication inlet port 11, first exhaust hole 12 and second exhaust hole 13 make the gas insulation medium in the gas tube can flow to density relay and explosion chamber, and the gas circuit between density relay and the explosion chamber, when transfer to piece 3 drive case 2 rotatory to the second position, case 2 seals second exhaust hole 13, and feed through inlet port 11 and first exhaust hole 12, with the gas circuit between disconnection density relay and the explosion chamber. From this, in-process that the density relay monitored the circuit breaker, it is rotatory to the first position with case 2, make density relay and explosion chamber be linked together, thereby density relay can detect the circuit breaker, when needs calibrate density relay, with case 2 rotation to the second position, seal second exhaust hole 13, with the gas circuit between disconnection density relay and the explosion chamber, seal gas-insulated medium in the explosion chamber, later can look into down from the circuit breaker connecting valve with density relay and calibrate, because first exhaust hole 12 has the same atmospheric pressure with casing 1 outside, can not receive the influence of air current when communicating density relay after with first exhaust hole 12 after calibrating, avoided the circuit breaker connecting valve to damage because of the effect of air current. After communicating the density relay with first exhaust hole 12, rotate case 2 to the first position, inlet port 11, first exhaust hole 12 and second exhaust hole 13 are linked together, and the gas tube is aerifyd in to the density relay, and the gas circuit between density relay and the explosion chamber switches on to the density relay can monitor the circuit breaker.

It should be noted that, after rotating case 2 to the second position, case 2 seals second exhaust hole 13, the gaseous insulating medium in the arc extinguishing chamber can't flow to the cavity in casing 1, can make the gas tube stop to the circuit breaker connecting valve transport gaseous insulating medium this moment, then can pull down the density relay from the circuit breaker connecting valve and calibrate, after breaking density relay and first exhaust hole 12, first exhaust hole 12 and casing 1 outside have the same atmospheric pressure, thereby can conveniently install the density relay on the circuit breaker connecting valve after calibrating the density relay, make the density relay communicate with first exhaust hole 12. After communicating density relay and first exhaust hole 12, can rotate case 2 to the first position, case 2 intercommunication inlet port 11, first exhaust hole 12 and second exhaust hole 13 can make the gas tube resume to carry gaseous insulating medium to the circuit breaker connecting valve this moment, and the gas tube can be to carrying gaseous insulating medium in the explosion chamber, and density relay is linked together with the explosion chamber moreover, and density relay can monitor the circuit breaker this moment.

Example two

As shown in fig. 1, the casing 1 has a cubic structure, and the air inlet hole 11, the first air outlet hole 12 and the second air outlet hole 13 are disposed on three mutually adjacent faces of the casing 1, and the first connecting hole and the air inlet hole 11 are located on two opposite faces of the casing 1.

In the embodiment of the application, the casing 1 is a cubic structure, the air inlet 11, the first exhaust hole 12 and the second exhaust hole 13 are arranged on three adjacent surfaces of the casing 1, and the first connecting hole and the air inlet 11 are positioned on two opposite surfaces of the casing 1, because the direction adjusting piece 3 penetrates through the first connecting hole to be connected with the valve core 2, when the valve core 2 rotates around the axis direction of the direction adjusting piece 3, the air inlet 11 can be always communicated with the gas filling pipe, and the porous area or the non-porous area on the valve core 2 can be rotated to the position opposite to the second exhaust hole 13, so that the second exhaust hole 13 is closed or opened, and the on-off of the air passage between the density relay and the arc extinguish chamber is conveniently controlled.

In one possible implementation, the valve element 2 may be a ball-shaped structure to facilitate rotation of the valve element 2. Fig. 3 is a schematic view of a valve core provided in the second embodiment of the present application. Referring to fig. 3, the valve core 2 is a spherical structure, the cavity in the housing 1 is a spherical cavity, and the diameter of the valve core 2 is smaller than or equal to the diameter of the cavity in the housing 1. The valve core 2 is provided with a first vent hole 21 and a second vent hole 22, the first vent hole 21 is a through hole taking the diameter of the valve core 2 as an axis, the second vent hole 22 is communicated with the first vent hole 21, the second vent hole 22 takes the radius of the valve core 2 as an axis, and the axis of the first vent hole 21 is vertical to the axial direction of the second vent hole 22. A first sealing ring is arranged between the valve core 2 and the second exhaust hole 13.

When the direction regulating piece 3 drives the valve core 2 to rotate to a first position around the axial direction of the direction regulating piece 3 in the cavity of the shell 1, the first vent hole 21 is communicated with the second exhaust hole 13, the second vent hole 22 is communicated with the air inlet hole 11, and the first vent hole 21 is communicated with the first exhaust hole 12 through a gap between the valve core 2 and the cavity in the shell 1;

when the direction regulating piece 3 drives the valve core 2 to rotate to a second position around the axial direction of the direction regulating piece 3 in the cavity of the shell 1, the first vent hole 21 is communicated with the first exhaust hole 12, the second vent hole 22 is communicated with the air inlet hole 11, and the non-porous area on the valve core 2 and the first sealing ring seal the second exhaust hole 13.

In the embodiment of the present application, the valve core 2 is provided with a first vent hole 21 and a second vent hole 22 which are communicated with each other, no sealing ring is arranged between the valve core 2 and the first vent hole 12, a first sealing ring is arranged between the valve core 2 and the second vent hole 13, and the second vent hole 22 is always communicated with the inlet hole 11. When the valve core 2 rotates to the first position, the first vent hole 21 is communicated with the second exhaust hole 13, and meanwhile, because no sealing ring is arranged between the valve core 2 and the first exhaust hole 12, the first vent hole 21 is communicated with the first exhaust hole 12 through a gap between the valve core 2 and the inner cavity of the shell 1, so that the air inlet hole 11, the first exhaust hole 12 and the second exhaust hole 13 are communicated with each other. When the valve core 2 rotates to the second position, the first vent hole 21 is communicated with the first exhaust hole 12, the non-porous area on the valve core 2 rotates to the position opposite to the second exhaust hole 13, the valve core 2 seals the second exhaust hole 13 under the action of the first sealing ring, and at the moment, the air inlet hole 11 is communicated with the first exhaust hole 12. From this, be provided with the first air vent 21 and the second air vent 22 that are linked together on the case 2, case 2 is rotatory to make first air vent 21 and first exhaust hole 12 or second exhaust hole 13 be linked together to the break-make of gas circuit between control density relay and the explosion chamber, because first sealing washer is by the centre gripping between case 2 and casing 1, the relative position of first sealing washer and case 2 can not changed to the air current, has solved the easy problem that makes circuit breaker connecting valve damage of dismouting density relay.

The valve core 2 is of a spherical structure, the cavity in the shell 1 is a spherical cavity, and the diameter of the valve core 2 is smaller than or equal to that of the cavity, so that the valve core 2 can rotate in the cavity of the shell 1, and the non-porous area on the valve core 2 can be ensured to seal the second exhaust hole 13 through the first sealing ring. The axis of first air vent 21 and second air vent 22 is mutually perpendicular on case 2, and inlet port 11, first exhaust hole 12 and second exhaust hole 13 set up on three faces that adjoin to each other on casing 1, case 2 around transfer to the axis direction rotation 90 of piece 3 alright make first air vent 21 and first exhaust hole 12 or second exhaust hole 13 be linked together, the user of being convenient for controls the break-make of gas circuit between density relay and the explosion chamber through transferring to 3, thereby can improve user's use experience.

It should be noted that, in the process of monitoring the circuit breaker by the density relay, it is necessary to ensure that the same air pressure exists in the density relay and the arc extinguishing chamber, that is, it is necessary to ensure that the density relay is communicated with the arc extinguishing chamber, and in the process of normal operation of the circuit breaker, the air pressure of the gas insulation medium in the arc extinguishing chamber is in a relatively stable state, that is, the air pressure in the arc extinguishing chamber does not fluctuate greatly, so that the air flows in the first vent hole 12 and the second vent hole 13 do not flow at a relatively high flow rate, and therefore, when the valve element 2 rotates to the first position, the first vent hole 21 and the first vent hole 12 are communicated through the gap between the valve element 2 and the cavity of the housing 1, so that the first vent hole 12 and the second vent hole 13 have the same air pressure, and on the premise of ensuring the accuracy of monitoring the circuit breaker by the density relay, the valve element 2 has a relatively simple structure, the circuit breaker connecting valve is guaranteed to have low cost.

In one possible implementation, the circuit breaker connecting valve may further include a support to define a position of the valve element in the cavity in the housing by the support. Fig. 4 is a schematic diagram of a circuit breaker connection valve according to a second embodiment of the present application, and as shown in fig. 4, the circuit breaker connection valve further includes a support 4 and a second sealing ring 5;

a second connecting hole is formed in the shell 1, and the second connecting hole and the second exhaust hole 13 are located on two opposite surfaces of the shell 1;

a blind hole is formed in the first end of the supporting piece 4, and the first end of the second sealing ring 5 is positioned in the blind hole in the supporting piece 4;

the first end of the supporting piece 4 passes through the second connecting hole, and the second end of the second sealing ring 5 is contacted with the valve core 2, so that the circle center of the valve core 2 is superposed with the circle center of the cavity of the shell 1.

In this application embodiment, because second connecting hole and second exhaust hole 13 are located two opposite faces of casing 1, valve core 2 and second exhaust hole 13 between the centre gripping hold first sealing washer, valve core 2 and support piece 4 between the centre gripping hold second sealing washer 5, and first connecting hole and inlet port 11 are located two opposite faces of casing 1, the axis of turning to piece 3 is mutually perpendicular with the axis of support piece 4 promptly, consequently first sealing washer and second sealing washer 5 can inject the relative position of valve core 2 and casing 1, and can not change the relative position of valve core 2 and casing 1 when turning to piece 3 drive valve core 2 and rotate, make the centre of a circle of valve core 2 and the centre of a circle coincidence of the cavity of casing 1, guarantee to control the break-make of gas circuit between density relay and the explosion chamber accurately through the rotation of valve core 2.

In a possible implementation manner, as shown in fig. 4, the breaker connection valve further includes a third sealing ring 6, the second end of the supporting member 4 is provided with a flange 41, the third sealing ring 6 is sleeved on the supporting member 4, the third sealing ring 6 is in contact with the flange 41, and the third sealing ring 6 is clamped between the flange 41 and a surface of the housing 1 where the second connection hole is located.

In a possible implementation mode, when the group length circuit breaker connecting valve, need put into the cavity in casing 1 with case 2 through the second connecting hole, later penetrate support piece 4 second connecting hole to case 2 and support, therefore the second connecting hole is connected with the cavity in casing 1, set up third sealing washer 6 between the second connecting hole place face on flange 41 and casing 1, avoid the gas insulation medium in the cavity of casing 1 to reveal from the second connecting hole, thereby guarantee that the gas insulation medium in the arc extinguish chamber of circuit breaker can not reveal, guarantee that the circuit breaker can normally work.

In a possible implementation manner, the first sealing ring and the second sealing ring are in surface contact with the valve core, and air tightness between the first sealing ring and the valve core and air tightness between the second sealing ring and the valve core are guaranteed. Fig. 5 is a schematic view of a sealing ring according to a second embodiment of the present application, and as shown in fig. 5, a first contact surface 71 of the first sealing ring 7, which contacts with the valve element 2, is a curved surface, and a diameter of the first contact surface 71 is equal to a diameter of the valve element 2, and a second contact surface 51 of the second sealing ring 5, which contacts with the valve element 2, is a curved surface, and a diameter of the second contact surface 51 is equal to a diameter of the valve element 2.

In the embodiment of the application, because the valve core 2 is clamped between the first sealing ring 7 and the second sealing ring 5, the first sealing ring 7 is in contact with the valve core 2 through the first contact surface 71, the second sealing ring 5 is in contact with the valve core 2 through the second contact surface 51, and the diameters of the first contact surface 71 and the second contact surface 51 are equal to the diameter of the valve core 2, so that the contact areas of the first contact surface 71 and the second contact surface 51 with the valve core 2 are increased, and the first contact surface 71 and the second contact surface 51 can be tightly attached to the valve core 2, on one hand, the relative position between the valve core 2 and the housing 1 can be effectively limited, on the other hand, the circuit breaker connecting valve is ensured not to leak air, and therefore, the on-off of an air passage between the density relay and the arc extinguish chamber can be controlled through the valve core 2.

EXAMPLE III

Fig. 6 is a schematic view of a direction adjusting member according to a third embodiment of the present application, and as shown in fig. 2-3 and fig. 6, the direction adjusting member 3 includes a knob 31 and a connecting rod 32, a linear groove 23 is disposed on the valve core 2, a linear boss 321 is disposed at a first end of the connecting rod 32, the linear groove 23 is engaged with the linear boss 321, the knob 31 is disposed outside the housing 1, and the knob 31 is connected to a second end of the connecting rod 32. The axis of the connecting rod 32 is the axis of the direction adjusting piece 3, when the knob 31 is rotated manually, the knob 31 drives the connecting rod 32 to rotate around the axis direction thereof, and the connecting rod 32 drives the valve core 2 to rotate to the first position or the second position around the axis direction of the connecting rod 32 so as to connect or disconnect the air path between the density relay and the arc extinguishing chamber.

In this application embodiment, a style of calligraphy recess 23 on the case 2 and a style of calligraphy boss 321 of the first end of connecting rod 32, make connecting rod 32 can drive case 2 when rotating around its axis and rotate, thereby the break-make of gas circuit between control density relay and the explosion chamber, the second end of connecting rod 32 is connected with the knob 31 that is located the casing 1 outside, can drive connecting rod 32 through knob 31 and rotate around its axis, convenience of customers rotates case 2, with the break-make of gas circuit between control density relay and the explosion chamber, help providing user's use experience.

In a possible implementation, in order to ensure that the valve core 2 can be rotated to the first or second position, corresponding alignment members may be provided on the knob 31 and the housing 1. Fig. 7 is a schematic diagram of a circuit breaker connection valve according to a third embodiment of the present application, and as shown in fig. 7, a first alignment hole 311 is formed in a rotary knob 31, and a second alignment hole 14 and a third alignment hole 15 are formed in a surface of a housing 1 where the first connection hole is located.

When the direction-adjusting piece 3 drives the valve core 2 to rotate to a first position in the cavity of the housing 1 around the axial direction of the direction-adjusting piece 3, the first aligning hole 311 is aligned with the second aligning hole 14, and a screw passing through the first aligning hole 311 and the second aligning hole 14 can limit the relative position of the knob 31 and the housing 1, so that the valve core 2 is kept at the first position.

When the direction-adjusting piece 3 drives the valve core 2 to rotate to a second position in the cavity of the housing 1 around the axial direction of the direction-adjusting piece 3, the first aligning hole 311 is aligned with the third aligning hole 15, and a screw passing through the first aligning hole 311 and the third aligning hole 15 can limit the relative position of the knob 31 and the housing 1, so that the valve core 2 is kept at the second position.

In this application embodiment, set up second counterpoint hole 14 and third counterpoint hole 15 on casing 1, second counterpoint hole 14 and third counterpoint hole 15 can regard as the instruction of first position and second position, and convenience of customers makes first counterpoint hole 311 align with second counterpoint hole 14 or third counterpoint hole 15 according to the rotatory knob 31 of demand to connect or break off the gas circuit between density relay and the explosion chamber, help improving user's use experience.

After the first aligning hole 311 aligns with the second aligning hole 14, the relative position of the knob 31 and the housing 1 can be fixed through the screw passing through the first aligning hole 311 and the second aligning hole 14, so that the relative position of the valve core 2 and the housing 1 can be fixed, the gas circuit between the density relay and the arc extinguish chamber is ensured to be in a conducting state, and the density relay can normally monitor the circuit breaker. After first counterpoint hole 311 aligns with third counterpoint hole 15, can fix knob 31 and casing 1's relative position through the screw that passes first counterpoint hole 311 and third counterpoint hole 15, thereby can fix case 2 and casing 1's relative position, guarantee to pull down the back with density relay from the circuit breaker connecting valve, case 2 can seal second exhaust hole 13, avoid lifting insulating medium in the arc extinguish chamber can not reveal from the circuit breaker connecting valve, thereby guarantee that the circuit breaker can normally work.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.

Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. The circuit breaker connecting valve for the break-make of gas circuit between the explosion chamber of control density relay and circuit breaker, its characterized in that, the circuit breaker connecting valve includes: the valve comprises a shell (1), a valve core (2) and a direction adjusting piece (3);

an air inlet (11), a first exhaust hole (12) and a second exhaust hole (13) are formed in the shell (1), the air inlet (11) is communicated with an inflation tube, the first exhaust hole (12) is communicated with a density relay, the second exhaust hole (13) is communicated with an arc extinguish chamber of a circuit breaker, and the inflation tube is used for conveying a gas insulating medium to the density relay and the arc extinguish chamber;

a cavity is arranged in the shell (1), the air inlet hole (11), the first exhaust hole (12) and the second exhaust hole (13) are communicated with the cavity, the valve core (2) is arranged in the cavity, and the direction adjusting piece (3) penetrates through a first connecting hole in the shell (1) to be connected with the valve core (2);

when the direction adjusting piece (3) drives the valve core (2) to rotate to a first position in the cavity around the axis direction of the direction adjusting piece (3), the valve core (2) is communicated with the air inlet hole (11), the first exhaust hole (12) and the second exhaust hole (13), so that a gas insulating medium in the gas filled tube flows to the density relay and the arc extinguish chamber and is communicated with an air passage between the density relay and the arc extinguish chamber;

when the direction adjusting piece (3) drives the valve core (2) to rotate to a second position in the cavity around the axis direction of the direction adjusting piece (3), the valve core (2) seals the second exhaust hole (13) and is communicated with the air inlet hole (11) and the first exhaust hole (12) so as to break an air path between the density relay and the arc extinguish chamber.

2. The circuit breaker connecting valve of claim 1,

the shell (1) is of a cubic structure, and the air inlet hole (11), the first exhaust hole (12) and the second exhaust hole (13) are arranged on three adjacent surfaces of the shell (1);

the first connecting hole and the air inlet hole (11) are located on two opposite faces of the shell (1).

3. The circuit breaker connecting valve of claim 2,

the valve core (2) is of a spherical structure, the cavity is a spherical cavity, and the diameter of the valve core (2) is smaller than or equal to that of the cavity;

the valve core (2) is provided with a first vent hole (21) and a second vent hole (22), the first vent hole (21) is a through hole taking the diameter of the valve core (2) as an axis, the second vent hole (22) is communicated with the first vent hole (21), the second vent hole (22) takes the radius of the valve core (2) as an axis, and the axis of the first vent hole (21) is vertical to the axis of the second vent hole (22);

a first sealing ring (7) is arranged between the valve core (2) and the second exhaust hole (13);

when the direction adjusting piece (3) drives the valve core (2) to rotate to a first position in the cavity around the axial direction of the direction adjusting piece (3), the first vent hole (21) is communicated with the second vent hole (13), the second vent hole (22) is communicated with the air inlet hole (11), and the first vent hole (21) is communicated with the first vent hole (12) through a gap between the valve core (2) and the cavity;

when the direction adjusting piece (3) drives the valve core (2) to rotate to a second position in the cavity around the axis direction of the direction adjusting piece (3), the first vent hole (21) is communicated with the first exhaust hole (12), the second vent hole (22) is communicated with the air inlet hole (11), and the second exhaust hole (13) is sealed by a non-porous area on the valve core (2) and the first sealing ring (7).

4. The circuit breaker coupling valve of claim 3, further comprising: a support (4) and a second sealing ring (5);

a second connecting hole is formed in the shell (1), and the second connecting hole and the second exhaust hole (13) are located on two opposite surfaces of the shell (1);

a blind hole is formed in the first end of the supporting piece (4), and the first end of the second sealing ring (5) is located in the blind hole;

the first end of the supporting piece (4) penetrates through the second connecting hole, and the second end of the second sealing ring (5) is in contact with the valve core (2), so that the circle center of the valve core (2) is superposed with the circle center of the cavity.

5. The circuit breaker coupling valve of claim 4, further comprising: a third seal ring (6);

a flange (41) is arranged at the second end of the support member (4), the third sealing ring (6) is sleeved on the support member (4), and the third sealing ring (6) is in contact with the flange (41);

and the third sealing ring (6) is clamped between the flange (41) and the surface of the shell (1) where the second connecting hole is located.

6. The circuit breaker connection valve of claim 4,

a first contact surface (51) on the first sealing ring (7) which is in contact with the valve core (2) is a curved surface, and the diameter of the first contact surface (51) is equal to that of the valve core (2);

and a second contact surface (71) on the second sealing ring (5) which is in contact with the valve core (2) is a curved surface, and the diameter of the second contact surface (71) is equal to that of the valve core (2).

7. The disconnector valve according to any one of claims 1 to 6, characterized in that the direction-regulating member (3) comprises: a knob (31) and a connecting rod (32);

a linear groove (23) arranged on the valve core (2) is matched with a linear boss (321) arranged at the first end of the connecting rod (32);

the knob (31) is arranged outside the shell (1), and the knob (31) is connected with the second end of the connecting rod (32);

the axis of the connecting rod (32) is the axis of the direction adjusting piece (3);

when the knob (31) is manually rotated, the knob (31) drives the connecting rod (32) to rotate around the axial direction of the connecting rod (32), and the connecting rod (32) drives the valve core (2) to rotate around the axial direction of the connecting rod (32) to the first position or the second position.

8. The circuit breaker connection valve of claim 7,

a first alignment hole (311) is formed in the knob (31), and a second alignment hole (14) and a third alignment hole (15) are formed in the surface of the shell (1) where the first connecting hole is located;

when the direction-adjusting piece (3) drives the valve core (2) to rotate to a first position in the cavity around the axial direction of the direction-adjusting piece (3), the first aligning hole (311) is aligned with the second aligning hole (14), and a screw passing through the first aligning hole (311) and the second aligning hole (14) defines the relative position of the knob (31) and the shell (1) so that the valve core (2) is kept at the first position;

when the direction-adjusting piece (3) drives the valve core (2) to rotate to a second position in the cavity around the axial direction of the direction-adjusting piece (3), the first aligning hole (311) is aligned with the third aligning hole (15), and a screw passing through the first aligning hole (311) and the third aligning hole (15) limits the relative position of the knob (31) and the shell (1) so that the valve core (2) is kept at the second position.

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