CN214838593U

CN214838593U - Three-way valve

Info

Publication number: CN214838593U
Application number: CN202120901411.3U
Authority: CN
Inventors: 王永军
Original assignee: Xi'an Gongchuang Electric Power Technology Co ltd
Current assignee: Xi'an Gongchuang Electric Power Technology Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-23
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a three-way valve, comprises a valve seat, the disk seat is provided with first gas passage, second gas passage along the horizontal direction, is provided with third gas passage along the axial, third gas passage and first gas passage intercommunication, set up switching control assembly along the axial between first gas passage, the second gas passage, the tip of second gas passage is provided with the briquetting, be provided with seal assembly in first gas passage, the third gas passage. The utility model discloses have dual waterproof design, have self-locking function, prevent the maloperation, sealed effect is better.

Description

Three-way valve

Technical Field

The utility model belongs to the technical field of high tension switchgear, concretely relates to three-way valve.

Background

The three-way valve is an essential key component on SF6 high-voltage switch equipment such as an SF6 breaker, an SF6 mutual inductor, a GIS and the like, and is also a key product for connecting on-line monitoring equipment or off-line monitoring equipment such as an SF6 density controller, an SF6 density transmitter, a remote transmission type SF6 density controller, micro-water monitoring equipment and the like; the functions of inflating and air supplementing the high-voltage switch equipment can be realized through the three-way valve.

In the prior art, the conventional three-way valve always has some problems: 1. the air leakage is easy to occur at the position of the rotating rod due to insufficient sealing; 2. effective waterproof measures are not taken at the sealing position of the rotating rod and the valve seat, water is easy to seep at the rotating rod in the outdoor long-term operation process of the product, and the sealing surface and the sealing ring at the rotating rod are slowly corroded by the seeped water accumulated for a long time due to the trace corrosivity in the water, so that the air leakage of the valve is caused; 3. the handle of the three-way valve is not provided with a locking device, so that the handle is easily screwed to a closed position in the operation process, misoperation is caused, and potential safety hazards are brought to the operation of high-voltage switch equipment.

SUMMERY OF THE UTILITY MODEL

In view of this, the main object of the present invention is to provide a three-way valve

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an embodiment of the utility model provides a three-way valve, comprises a valve seat, the disk seat is provided with first gas passage, second gas passage along the horizontal direction, is provided with third gas passage along the axial, third gas passage and first gas passage intercommunication, set up switching control assembly along the axial between first gas passage, the second gas passage, the tip of second gas passage is provided with the briquetting, be provided with seal assembly in first gas passage, the third gas passage.

In the above scheme, the seal assembly comprises an ejector rod, a spring, a pressure spring cover and a retainer ring, the front end of the ejector rod is a conical surface and faces the inside of the first gas channel and the third gas channel, the spring is sleeved outside the ejector rod and fixed through the pressure spring cover arranged on the lower side, and the retainer ring is arranged at the tail end of the ejector rod.

In the above scheme, a first step and a second step are arranged in the second gas channel of the valve seat, a belleville spring is arranged between the pressing block and the first step, and a framework flat gasket is arranged between the pressing block and the second step.

In the scheme, the framework flat pad comprises a red copper metal ring, and an ethylene propylene diene monomer rubber layer is sleeved outside the red copper metal ring.

In the above scheme, switching control assembly includes centre of sphere, bull stick, handle, the centre of sphere sets up between first gas passage, second gas passage to the upper end is connected with the lower extreme of bull stick, all be provided with the centre of sphere sealed pad between the both sides of centre of sphere and first gas passage, second gas passage, the upper end and the handle of bull stick are connected.

In the above scheme, the spherical center sealing gasket is abutted against the side wall of the axial through hole of the valve seat, and the side wall is provided with the annular boss.

In the above scheme, from the bottom up sets gradually first O type sealing washer, second O type sealing washer, waterproof pad, waterproof sealing washer between the axial through hole of bull stick and disk seat.

In the above scheme, be provided with spacing subassembly between the top surface of handle and disk seat, spacing subassembly includes spacing piece, spacer pin, spacing piece sets up the bottom surface at the handle, the spacer pin sets up the position that corresponds at the top surface of disk seat and spacing piece.

In the scheme, the handle is connected with the upper end of the rotating rod through the screw, the washer and the elastic pad.

In the above scheme, the top surface of handle is provided with the handle signboard.

Compared with the prior art, the utility model discloses have dual waterproof design, have self-locking function, prevent the maloperation, sealed effect is better.

Drawings

The accompanying drawings, which are described herein, serve to disclose a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are used to explain the invention and not to constitute an undue limitation on the invention. In the drawings:

fig. 1 is a perspective view of a three-way valve according to an embodiment of the present invention;

fig. 2 is a front view of a three-way valve according to an embodiment of the present invention;

fig. 3 is a side cross-sectional view of a three-way valve according to an embodiment of the present invention;

fig. 4 is a partial enlarged view of a three-way valve according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a skeleton flat gasket in a three-way valve according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a sealing assembly in a three-way valve according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

An embodiment of the utility model provides a three-way valve, as shown in fig. 1-6, including disk seat 1, disk seat 1 is provided with first gas passage 9, second gas passage 10 along the horizontal direction, is provided with third gas passage 11 along the axial, third gas passage 11 and first gas passage 9 intercommunication, set up switching control assembly along the axial between first gas passage 9, the second gas passage 10, the tip of second gas passage 10 is provided with briquetting 17, be provided with seal assembly 20 in first gas passage 9, the third gas passage 11.

The sealing assembly 20 comprises a push rod 201, a spring 202, a pressure spring cover 203 and a retainer ring 204, the front end of the push rod 201 is a conical surface and faces the inside of the first gas channel 9 and the third gas channel 11, the spring 202 is sleeved outside the push rod 201 and fixed through the pressure spring cover 203 arranged on the lower side, and the retainer ring 204 is arranged at the tail end of the push rod 201.

When the opening and closing control assembly is in the off state, the sealing assemblies 20 in the first gas passage 9 and the third gas passage 11 are in the off state under the action of the elastic force of the internal spring 202, at the moment, external gas in the first gas passage 9 and the third gas passage 11 cannot enter the cavity of the three-way valve, and the cleanliness in the cavity of the three-way valve can be ensured.

When the open-close control assembly is in an 'open' state, gas enters the cavity of the three-way valve through the third gas passage 11, the sealing assemblies 20 in the first gas passage 9 and the third gas passage 11 are opened under the action of pressure, and the first gas passage 9 and the third gas passage 11 are in a ventilation state.

A first step and a second step are arranged in the second gas channel 10 of the valve seat 1, a belleville spring 18 is arranged between the pressing block 17 and the first step, and a framework flat gasket 19 is arranged between the pressing block 17 and the second step.

The framework flat gasket 19 enables the valve seat 1, the spherical sealing gasket 2 and the pressing block 17 to form a more reliable sealing effect, the hidden danger of body end sealing leakage is thoroughly eliminated, the belleville spring 18 is arranged between the pressing block 17 and the valve seat 1, the belleville spring 18 has certain elasticity, after the pressing block 17 is fastened, the belleville spring 18 enables the pressing block 17 and the valve seat 1 to be always kept with certain elasticity, and loosening caused by pressing block threads under the influence of long-time equipment vibration is prevented.

The framework flat gasket 19 comprises a red copper metal ring 191, and an ethylene propylene diene monomer rubber layer 192 is sleeved outside the red copper metal ring 191, so that the framework flat gasket 19 has the excellent sealing performance of a rubber flat gasket, and the hardness of the flat gasket is improved by several times due to the fact that the metal annular framework is added in the middle of the framework flat gasket, and the flat gasket cannot be damaged due to pressure when being stressed and extruded.

The switching control assembly comprises a sphere center 3, a rotating rod 13 and a handle 7, wherein the sphere center 3 is arranged between a first gas channel 9 and a second gas channel 10, the upper end of the sphere center is connected with the lower end of the rotating rod 13, sphere center sealing gaskets 2 are arranged between the two sides of the sphere center 3 and the first gas channel 9 and the second gas channel 10, and the upper end of the rotating rod 13 is connected with the handle 7.

The spherical center sealing gasket 2 is abutted against the side wall of the axial through hole of the valve seat 1, and an annular boss 101 is arranged on the side wall.

The annular boss 101 and the spherical center sealing gasket 2 form sealing under the action of fastening force, and the annular sealing boss 101 is safer and more reliable in sealing.

And a first O-shaped sealing ring 4, a second O-shaped sealing ring 5, a waterproof pad 6 and a waterproof sealing ring 14 are sequentially arranged between the rotating rod 13 and the axial through hole of the valve seat 1 from bottom to top.

Be provided with spacing subassembly between the top surface of handle 7 and disk seat 1, spacing subassembly includes spacing piece 8, spacer pin 15, spacing piece 8 sets up the bottom surface at handle 7, spacer pin 15 sets up the position that corresponds at the top surface of disk seat 1 and spacing piece 8.

The handle 7 is connected with the upper end of the rotating rod 13 through a screw, a washer and an elastic pad.

The top surface of the handle 7 is provided with a handle signboard 12, and the handle signboard 12 is provided with a handle rotation direction sign.

The lower end of the rotating rod 13 is provided with a boss which is inserted into the corresponding groove of the sphere center 2, and the rotating rod 13 can drive the sphere center 2 to rotate when rotating through the structure.

The rotating rod 13 is provided with 3 first O-rings 4, so that the sealing between the rotating rod 13 and the valve seat 1 is ensured.

And a second O-shaped ring 5 is arranged between the upper end of the rotating rod 13 and the valve seat 1, and a second seal is formed between the rotating rod 13 and the valve seat 1 through the second O-shaped ring 5.

The rotating rod 13 is provided with a waterproof pad 6 and is fixed with the valve seat 1 through a clamp spring; waterproof gasket 6 upper end has waterproof sealing ring 14, and waterproof sealing ring 14 goes up the equipment spacing piece 8, and handle 7 compresses tightly waterproof sealing ring 14 through screw, packing ring, bullet pad, forms first waterproof function between handle 7, bull stick 13 and disk seat 1, and waterproof gasket 6 of waterproof sealing ring 14 lower extreme forms the waterproof function of second way.

The handle 7 is also provided with a set screw 21, when the handle 7 rotates to the opening position, the set screw 21 is screwed downwards clockwise, the conical surface at the front section of the set screw 21 is inserted into the corresponding conical hole on the end surface of the valve seat 1, and the handle 7 is fixed at the opening position and cannot rotate, so that misoperation is prevented.

Check valves are arranged in the inflating valve gas circuit and the density meter assembling gas circuit, so that the drying in the cavity of the valve seat 1 can be ensured before the inflating valve and the density meter are assembled, and dust is prevented from entering the cavity.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplified description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, 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, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, article, or apparatus that comprises the element.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The utility model provides a three-way valve, its characterized in that, includes the disk seat, the disk seat is provided with first gas passage, second gas passage along the horizontal direction, is provided with third gas passage along the axial, third gas passage and first gas passage intercommunication, set up switching control assembly along the axial between first gas passage, the second gas passage, the tip of second gas passage is provided with the briquetting, be provided with seal assembly in first gas passage, the third gas passage.

2. The three-way valve according to claim 1, wherein the sealing assembly comprises a push rod, a spring, a pressure spring cover and a retainer ring, the front end of the push rod is a conical surface and faces to the inside of the first gas channel and the inside of the third gas channel, the spring is sleeved outside the push rod and fixed through the pressure spring cover arranged on the lower side, and the retainer ring is arranged at the tail end of the push rod.

3. A three-way valve according to claim 1 or 2, characterized in that a first step and a second step are provided in the second gas passage of the valve seat, a belleville spring is provided between the pressure piece and the first step, and a skeleton flat gasket is provided between the pressure piece and the second step.

4. The three-way valve according to claim 3, wherein the skeleton flat gasket comprises a red copper metal ring, and an ethylene propylene diene monomer rubber layer is sleeved outside the red copper metal ring.

5. The three-way valve according to claim 4, wherein the opening and closing control assembly comprises a ball center, a rotating rod and a handle, the ball center is arranged between the first gas passage and the second gas passage, the upper end of the ball center is connected with the lower end of the rotating rod, ball center sealing gaskets are arranged between two sides of the ball center and the first gas passage and the second gas passage, and the upper end of the rotating rod is connected with the handle.

6. A three-way valve according to claim 5, characterized in that the ball seal abuts against a side wall of the axial through hole of the valve seat, said side wall being provided with an annular projection.

7. The three-way valve according to claim 6, wherein a first O-shaped sealing ring, a second O-shaped sealing ring, a waterproof pad and a waterproof sealing ring are sequentially arranged between the rotating rod and the axial through hole of the valve seat from bottom to top.

8. The three-way valve according to claim 7, wherein a limiting component is arranged between the handle and the top surface of the valve seat, the limiting component comprises a limiting sheet and a limiting pin, the limiting sheet is arranged on the bottom surface of the handle, and the limiting pin is arranged on the top surface of the valve seat at a position corresponding to the limiting sheet.

9. A three-way valve according to claim 8, characterized in that the handle is connected to the upper end of the rotating rod by means of screws, washers, spring washers.

10. A three-way valve according to claim 9, characterized in that the top surface of the handle is provided with a handle signboard.