阅读说明：本技术 气体连通接头和检测设备 (Gas communication joint and detection equipment ) 是由 韩明朝 王正平 高冰 崔泽坤 高竹林 贾梦雨 李鹏 刘阳阳 冯向阳 张登奎 熊玉 于 2020-07-31 设计创作，主要内容包括：本发明提供了气体连通接头,属于气体流通技术领域,包括第一阀体和第二阀体。第一阀体的顶部开设有用于连通设备的通气孔,第一阀体内沿轴向滑动设有第一阀杆。第二阀体位于第一阀体的下方,且密闭套装在第一阀体上,第二阀体上开设有用于连通外部管路的输气孔；第二阀体内沿轴向滑动设置有第二阀杆；第一阀杆和第二阀杆相远离的端部分别连接有第一弹性件和第二弹性件；第二阀杆通过第二弹性件启闭输气孔。第二阀杆驱动第一阀杆运动,用于使输气孔和通气孔开启并连通。本发明还提供一种检测设备。本发明提供的气体连通接头可实现不同的设备和外接管路之间进行气体的连通,无需定制特定的装置,安装简便并且适用性较强。(The invention provides a gas communication joint, which belongs to the technical field of gas circulation and comprises a first valve body and a second valve body. A vent hole used for communicating equipment is formed in the top of the first valve body, and a first valve rod is arranged in the first valve body in an axially sliding mode. The second valve body is positioned below the first valve body and hermetically sleeved on the first valve body, and the second valve body is provided with a gas transmission hole for communicating an external pipeline; a second valve rod is arranged in the second valve body in a sliding mode along the axial direction; the end parts of the first valve rod and the second valve rod, which are far away from each other, are respectively connected with a first elastic part and a second elastic part; the second valve rod opens and closes the gas transmission hole through the second elastic piece. The second valve rod drives the first valve rod to move, and the air delivery hole and the air vent hole are opened and communicated. The invention also provides detection equipment. The gas communication joint provided by the invention can realize gas communication between different equipment and an external pipeline, does not need to customize a specific device, is simple and convenient to install and has stronger applicability.)

1. Gas intercommunication connects, its characterized in that includes:

the top of the first valve body is provided with a vent hole for communicating equipment, and a first valve rod is arranged in the first valve body in a sliding manner along the axial direction;

the second valve body is positioned below the first valve body, hermetically sleeved on the first valve body and provided with a gas transmission hole for communicating with an external pipeline; a second valve rod is arranged in the second valve body in a sliding mode along the axial direction; the end parts, far away from the first valve rod and the second valve rod, of the first valve rod and the second valve rod are respectively connected with a first elastic piece and a second elastic piece; the first valve rod opens and closes the vent hole through the first elastic piece, and the second valve rod opens and closes the gas transmission hole through the second elastic piece;

the second valve rod drives the first valve rod to move, and the first valve rod is used for enabling the air delivery hole and the air vent hole to be opened and communicated.

2. The gas communication joint according to claim 1, wherein the first valve body and the second valve body are provided with a first clamping table and a second clamping table on the inner walls thereof, respectively, and the first valve rod abuts against the first clamping table by means of the first elastic member for blocking the first valve body; the second valve rod abuts against the second clamping table through the second elastic piece and is used for sealing the second valve body.

3. The gas communication coupling of claim 2, wherein the distal ends of said first and second stems are provided with first and second chucks, respectively; the first elastic piece and the second elastic piece are respectively connected to the first chuck and the second chuck; the first chuck and the second chuck are used for abutting against the first clamping table and the second clamping table respectively.

4. The gas communication joint of claim 3, wherein the ends of said first chuck and said second chuck are each provided with a sealing bevel.

5. The gas communication coupling of claim 2, wherein said first snap land is integrally formed with said first valve body; the second clamping table and the second valve body are integrally formed.

6. The gas communication coupling of claim 2, wherein a gasket layer is secured to an inner side of each of said first and second clamping platforms.

7. The gas communication joint according to claim 1, wherein a retainer for being caught on an outer periphery of said first valve body is installed at an end portion of said second valve body.

8. The gas communication connector according to claim 7, wherein the retainer is a positioning bead, the positioning beads are disposed along a circumferential direction of the second valve body, and a groove for engaging with the positioning beads is formed on an outer circumferential surface of the first valve body.

9. The gas communication joint of claim 2, wherein a sealing sleeve for abutting against the outer periphery of the first valve body is fixed to the inner wall of the second valve body, and the second clamping table is arranged on the inner wall of the sealing sleeve.

10. The gas communication joint of claim 1, wherein a sliding sleeve is sleeved on each of the first valve stem and the second valve stem, and the sliding sleeve is fixedly connected with the inner wall of the first valve body and the inner wall of the second valve body through a plurality of fixing rods.

11. The gas communication joint of claim 1, wherein said first valve stem is disposed along an axial direction of said first valve body and said second valve stem is disposed along an axial direction of said second valve body.

12. The gas communication joint according to claim 3, wherein the end portions of the first valve body and the second valve body are respectively screwed with a first connecting plate and a second connecting plate, the first connecting plate and the vent hole are opened on the first connecting plate, and the first elastic member abuts against the side surface of the first connecting plate; the air delivery hole is arranged on the second connecting plate in a penetrating mode, and the second elastic piece abuts against the side face of the second connecting plate.

13. Detection apparatus, comprising a gas communication joint according to any one of claims 1 to 12.

Technical Field

The invention belongs to the technical field of gas circulation, and particularly relates to a gas communication joint and detection equipment.

Background

With the increasing number of gas-insulated switchgear units, SF₆The amount of gas used is increasing. SF₆Leakage of gas is one of the common defects in the daily operation of high voltage insulation equipment. When SF₆When the gas concentration is lower than a certain value, the insulation performance in the insulation equipment is reduced until an accident occurs. Therefore, the SF in the insulating equipment needs to be treated in the daily use process₆And detecting the gas concentration. Because different devices have different volumes and different positions of the vent holes,the existing communication joint which needs to be customized is capable of realizing gas delivery, the applicability of the device is poor, and a great deal of inconvenience is brought to work.

Disclosure of Invention

The invention aims to provide a gas communication joint, and aims to solve the problems that gas can be conveyed only by customizing a specific communication joint, and the applicability of the device is poor.

In order to achieve the purpose, the invention adopts the technical scheme that: providing a gas communication joint comprising:

the top of the first valve body is provided with a vent hole for communicating equipment, and a first valve rod is arranged in the first valve body in a sliding manner along the axial direction;

the second valve body is positioned below the first valve body, hermetically sleeved on the first valve body and provided with a gas transmission hole for communicating with an external pipeline; a second valve rod is arranged in the second valve body in a sliding mode along the axial direction; the end parts, far away from the first valve rod and the second valve rod, of the first valve rod and the second valve rod are respectively connected with a first elastic piece and a second elastic piece; the first valve rod opens and closes the vent hole through the first elastic piece, and the second valve rod opens and closes the gas transmission hole through the second elastic piece;

the second valve rod drives the first valve rod to move, and the first valve rod is used for enabling the air delivery hole and the air vent hole to be opened and communicated.

As another embodiment of the present application, a first clamping table and a second clamping table are respectively arranged on inner walls of the first valve body and the second valve body, and the first valve rod abuts against the first clamping table by means of the first elastic member to seal the first valve body; the second valve rod abuts against the second clamping table through the second elastic piece and is used for sealing the second valve body.

As another embodiment of the present application, the end portions of the first valve rod and the second valve rod, which are far away from each other, are respectively provided with a first chuck and a second chuck; the first elastic piece and the second elastic piece are respectively connected to the first chuck and the second chuck; the first chuck and the second chuck are used for abutting against the first clamping table and the second clamping table respectively.

As another embodiment of the present application, the ends of the first chuck and the second chuck are each provided with a sealing bevel.

As another embodiment of the present application, the first clamping table is integrally formed with the first valve body; the second clamping table and the second valve body are integrally formed.

As another embodiment of the present application, a seal pad layer is fixed to inner side surfaces of the first clamping table and the second clamping table.

As another embodiment of the present application, a retainer for being caught on an outer periphery of the first valve body is installed at an end portion of the second valve body.

As another embodiment of this application, chucking spare is the location pearl, and is a plurality of the location pearl is followed the circumference of second valve body sets up, the peripheral face of first valve body offer be used for with a plurality of the draw-in groove of location pearl joint.

As another embodiment of this application, be fixed with on the inner wall of second valve body and be used for leaning on the seal cover of first valve body periphery, the second ka tai is located on the inner wall of seal cover.

As another embodiment of this application, first valve rod with all the cover is equipped with the sliding sleeve on the second valve rod, the sliding sleeve pass through a plurality of dead levers with the inner wall of first valve body with the inner wall fixed connection of second valve body.

As another embodiment of the present application, the first valve rod is disposed along an axial direction of the first valve body, and the second valve rod is disposed along an axial direction of the second valve body.

As another embodiment of the application, the end parts of the first valve body and the second valve body are respectively in threaded connection with a first connecting plate and a second connecting plate, the first connecting plate and the vent hole are arranged on the first connecting plate in a penetrating manner, and the first elastic piece abuts against the side surface of the first connecting plate; the air delivery hole is arranged on the second connecting plate in a penetrating mode, and the second elastic piece abuts against the side face of the second connecting plate.

The gas communication joint provided by the invention has the beneficial effects that: compared with the prior art, the gas communication joint is provided with the vent hole on the top of the first valve body, the first valve rod slides along the axial direction of the first valve body, the first valve rod is provided with the first elastic piece, and the first valve rod opens and closes the vent hole through the first elastic piece.

The second valve body is positioned below the first valve body and is used for being sleeved on the first valve body in a sealing mode, and the second valve body is also provided with an air delivery hole. The second valve rod slides along the axial direction of the second valve body, and a second elastic piece is connected to the second valve rod. The second valve rod opens and closes the gas transmission hole through a second elastic piece, and the first elastic piece and the second elastic piece are respectively positioned at the end parts, far away from the first valve rod and the second valve rod.

When the valve is used, when the first valve body and the second valve body are not connected, the first valve rod blocks the first valve body under the action of the first elastic piece, and the second valve rod blocks the second valve body under the action of the second elastic piece. When the second valve body is sleeved on the first valve body in a sealing mode, the second valve rod is in contact with the first valve rod and drives the first valve rod to move, the first elastic piece and the second elastic piece are compressed and contracted under the driving of the second valve rod, a channel for gas circulation is formed between the first valve body and the second valve body, and the gas transmission hole and the vent hole are opened and communicated.

And when the second valve body is pulled out from the first valve body after the gas circulation is finished, the vent hole and the gas transmission hole are in a sealed state again. In this application, can realize carrying out gaseous intercommunication between different equipment and the external pipeline, need not to customize specific device, simple installation and suitability are stronger.

A second aspect of an embodiment of the present invention provides a detection apparatus, including the gas communication joint.

The detection equipment provided by the invention has the beneficial effects that: compared with the prior art, the detection equipment has the advantages that the vent hole is formed in the top of the first valve body, the first valve rod slides along the axial direction of the first valve body, the first elastic piece is arranged on the first valve rod, and the first valve rod opens and closes the first valve body through the first elastic piece.

The second valve body is positioned below the first valve body and is used for being sleeved on the first valve body in a sealing mode, and the second valve body is also provided with an air delivery hole. The second valve rod slides along the axial direction of the second valve body, and a second elastic piece is connected to the second valve rod. The second valve rod opens and closes the second valve body through a second elastic piece, and the first elastic piece and the second elastic piece are respectively positioned at the end parts, far away from the first valve rod and the second valve rod.

When the valve is used, when the first valve body and the second valve body are not connected, the first valve rod blocks the first valve body under the action of the first elastic piece, and the second valve rod blocks the second valve body under the action of the second elastic piece. When the second valve body is sleeved on the first valve body in a sealing mode, the second valve rod is in contact with the first valve rod and drives the first valve rod to move, the first elastic piece and the second elastic piece are compressed and contracted under the driving of the second valve rod, a channel for gas circulation is formed between the first valve body and the second valve body, and the gas transmission hole and the vent hole are opened and communicated.

And when the second valve body is pulled out from the first valve body after the gas circulation is finished, the vent hole and the gas transmission hole are in a sealed state again. In this application, can realize carrying out gaseous intercommunication between different equipment and the external pipeline, need not to customize specific device, simple installation and suitability are stronger.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a gas communication joint according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the first valve body and the second valve body when the first valve body and the second valve body are separated according to the second embodiment of the invention;

fig. 3 is a schematic structural diagram of the first valve body and the second valve body when separated according to the third embodiment of the present invention;

FIG. 4 is a schematic view of the connection between the first valve body and the seal cushion according to the fourth embodiment of the present invention;

fig. 5 is a schematic structural view of a fifth valve body according to an embodiment of the present invention when the first valve body and the second valve body are separated.

In the figure: 1. a first valve body; 2. a vent hole; 3. a positioning bead; 4. a first valve stem; 5. a first elastic member; 6. a first chuck table; 7. a first chuck; 8. a second valve stem; 9. a second chuck; 10. a second elastic member; 11. a gas transmission hole; 12. sealing sleeves; 13. a second chuck table; 14. a second valve body; 15. sealing the cushion layer; 16. a card slot; 17. fixing the rod; 18. a sliding sleeve; 19. a first connecting plate; 20. a second connecting plate.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, 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.

Referring to fig. 1 and 2, the gas communication joint provided by the present invention will now be described. The gas communication joint comprises a first valve body 1 and a second valve body 14. The top of the first valve body 1 is provided with a vent hole 2 for communicating with equipment in a penetrating manner, and the first valve body 1 is internally provided with a first valve rod 4 along the axial direction in a sliding manner. The second valve body 14 is positioned below the first valve body 1 and hermetically sleeved on the first valve body 1, and the second valve body 14 is provided with a gas transmission hole 11 for communicating with an external pipeline; a second valve rod 8 is arranged in the second valve body 14 in a sliding mode along the axial direction; the ends of the first valve rod 4 and the second valve rod 8 which are far away from each other are respectively connected with a first elastic piece 5 and a second elastic piece 10; the first valve rod 4 opens and closes the vent hole 2 through the first elastic piece 5, and the second valve rod 8 opens and closes the gas transmission hole 11 through the second elastic piece 10; the second valve rod 8 drives the first valve rod 4 to move, so that the air delivery hole 11 and the air vent hole 2 are opened and communicated.

The gas communication joint provided by the invention has the beneficial effects that: compared with the prior art, the gas communication joint is characterized in that the top of the first valve body 1 is provided with the vent hole 2, the first valve rod 4 slides along the axial direction of the first valve body 1, the first valve rod 4 is provided with the first elastic piece 5, and the first valve rod 4 opens and closes the vent hole 2 through the first elastic piece 5.

The second valve body 14 is located below the first valve body 1 and is used for being hermetically sleeved on the first valve body 1, and the second valve body 14 is also provided with an air delivery hole 11. The second valve rod 8 slides along the axial direction of the second valve body 14, and the second elastic member 10 is connected to the second valve rod 8. The second valve rod 8 opens and closes the gas transmission hole 11 through a second elastic piece 10, and the first elastic piece 5 and the second elastic piece 10 are respectively positioned at the end parts of the first valve rod 4 and the second valve rod 8 which are far away from each other.

In use, when the first valve body 1 and the second valve body 14 are not connected, the first valve rod 4 blocks the first valve body 1 under the action of the first elastic piece 5, and the second valve rod 8 blocks the second valve body 14 under the action of the second elastic piece 10. When the second valve body 14 is closely sleeved on the first valve body 1, the second valve rod 8 is in contact with the first valve rod 4 and drives the first valve rod 4 to move, the first elastic part 5 and the second elastic part 10 are compressed and contracted under the driving of the second valve rod 8, a channel for gas circulation is formed between the first valve body 1 and the second valve body 14, and the gas transmission hole 11 and the vent hole 2 are opened and communicated.

Gas can flow between the equipment and the external pipeline under the action of the pressure difference, and after the gas circulation is completed, the second valve body 14 is drawn out of the first valve body 1, and the vent hole 2 and the gas transmission hole 11 are in a sealed state again. In this application, can realize carrying out gaseous intercommunication between different equipment and the external pipeline, need not to customize specific device, simple installation and suitability are stronger.

In this application, when the first valve rod 4 abuts against the inner side surface of the first clamping table 6, gas cannot enter the vent hole 2 from the outside of the first valve body 1 through the first valve rod 4. The first valve cavity is arranged in the first valve body 1, and the vent hole 2 is communicated with the first valve cavity. The end part of the first valve rod 4 and the first elastic part 5 are both located in the first valve cavity, in an initial state, the first elastic part 5 and the second elastic part 10 are both in a pressed state, under the action of the first elastic part 5, the end part of the first valve rod 4 abuts against the first clamping table 6, if the pressure of gas in the equipment is greater than the external atmospheric pressure, the gas in the equipment can also act on the first valve rod 4, the first valve cavity is finally sealed, the gas in the equipment cannot be discharged, and the action mechanism of the second valve rod 8 and the second clamping table 13 is similar to that of the above.

As a specific embodiment of the gas communication joint provided by the present invention, please refer to fig. 1 to 5, a first clamping table 6 and a second clamping table 13 are respectively disposed on the inner walls of the first valve body 1 and the second valve body 14, and the first valve rod 4 abuts against the first clamping table 6 by means of the first elastic member 5 for blocking the first valve body 1; the second valve rod 8 rests by means of a second spring element 10 against a second stop 13 for closing off the second valve body 14. When first valve rod 4 and first ka tai 6 clearance set up, first valve body 1 is opened, and when first valve rod 4 supported on first ka tai 6 with the help of first elastic component 5, first valve body 1 closed. The second valve body 14 is opened and closed in a similar manner to the first valve body 1.

As an embodiment of the gas communication joint provided by the present invention, please refer to fig. 1 to 5, wherein the end portions of the first valve rod 4 and the second valve rod 8 away from each other are respectively provided with a first chuck 7 and a second chuck 9; the first elastic piece 5 and the second elastic piece 10 are respectively connected to the first chuck 7 and the second chuck 9; the first chuck 7 and the second chuck 9 are intended to abut against the first chuck table 6 and the second chuck table 13, respectively. In order to enable the first valve rod 4 and the second valve rod 8 to tightly abut against the first clamping table 6 and the second clamping table 13 and to plug the first valve body 1 and the second valve body 14, the elastic modulus of the first elastic piece 5 and the second elastic piece 10 is large, and the large elastic modulus can also plug the first valve body 1 and the second valve body 14 quickly when the second valve body 14 is pulled out of the first valve body 1, so that excessive overflow of gas in equipment and an external pipeline is prevented, the environment is prevented from being polluted, and the diameter of the elastic pieces is large.

Meanwhile, the first valve rod 4 and the first clamping table 6 as well as the second valve rod 8 and the second clamping table 13 are arranged at intervals, so that a gas circulation channel is formed, namely the diameters of the first valve rod 4 and the second valve rod 8 are not too large easily, on the basis, the end parts, far away from the first valve rod 4 and the second valve rod 8, of the first clamping disc 7 and the second clamping disc 9 are fixed respectively, the first elastic piece 5 is located between the first clamping disc 7 and the first valve body 1, and the second elastic piece 10 is located between the second clamping disc 9 and the second valve body 14. The diameter of the first chuck 7 is larger than that of the first valve rod 4, and the diameter of the second chuck 9 is larger than that of the second valve rod 8, so that the connection reliability is ensured.

As a specific embodiment of the gas communication joint provided by the present invention, the ends of the first chuck 7 and the second chuck 9 are provided with sealing slopes. The first clamping table 6 and the second clamping table 13 are oppositely arranged, the first clamping table 6 and the second clamping table 13 are vertically and gradually increased from the direction of mutually approaching the cross sections of the first valve rod 4 and the second valve rod 8, the first clamping table 6 and the second clamping table 13 are respectively arranged along the circumferential direction of the inner walls of the first valve body 1 and the second valve body 14, and when the first valve rod 4 and the second valve rod 8 are not in contact, the first chuck 7 and the second chuck 9 respectively abut against specific positions on the first clamping table 6 and the second clamping table 13.

In order to prevent gas from overflowing from the first valve body 1 and the second valve body 14, sealing inclined planes are arranged at the end parts of the first chuck 7 and the second chuck 9, which are close to each other, the sealing inclined planes on the first chuck 7 are attached to the inner side surface of the first clamping table 6, and the sealing inclined planes on the second chuck 9 are attached to the inner side surface of the second clamping table 13. Through setting up sealed inclined plane, improved the leakproofness to prevent gaseous the spilling over. For convenience of understanding, chamfers can be arranged at the end parts of the first chuck 7 and the second chuck 9, which are close to each other, the angle of the chamfers depends on the angles of the first clamping table 6 and the second clamping table 13, and the guide inclined planes on the chamfers are sealing inclined planes.

As a specific embodiment of the gas communication joint provided by the present invention, the first chuck 6 is integrally formed with the first valve body 1; the second chuck 13 is integrally formed with the second valve body 14. First ka tai 6 and second ka tai 13 can be fixed respectively on the inner wall of first valve body 1 and second valve body 14, when the pressure of equipment and external pipeline internal gas is great, in order to guarantee the stability of structure, and avoid ka tai and the poor problem of leakproofness because installation error causes with the valve rod, so first ka tai 6 and first valve body 1 integrated into one piece, second ka tai 13 and second valve body 14 integrated into one piece, thereby the joint strength of relevant component has been improved, and sealed performance has been guaranteed.

Referring to fig. 4, as a specific embodiment of the gas communication joint provided by the present invention, a sealing cushion layer 15 is fixed on the inner side surfaces of the first clamping table 6 and the second clamping table 13. Because the first clamping table 6, the second clamping table 13, the first clamping disc 7 and the second clamping disc 9 are all rigid parts, after the circulation of gas between an external pipeline and equipment is realized, the first valve body 1 and the second valve body 14 realize plugging by means of the reset of the first elastic piece 5 and the second elastic piece 10 respectively. However, due to various reasons of inaccurate movement and installation and manufacturing errors, the connection between the first chuck 7 and the first clamping table 6 and the connection between the second chuck 9 and the second clamping table 13 are not compact, so that the sealing cushion layers 15 are fixed on the inner walls of the first clamping table 6 and the second clamping table 13, the first chuck 7 and the second chuck 9 are abutted against the corresponding sealing cushion layers 15, and the sealing cushion layers 15 are made of flexible rubber, so that the connection tightness is improved.

Referring to fig. 1 to 5 together, as an embodiment of the gas communication joint provided by the present invention, a clamping member for clamping on the outer periphery of the first valve body 1 is installed at the end of the second valve body 14. In order to realize the circulation of gas, open ends are arranged on the first valve body 1 and the second valve body 14, and after the open ends on the first valve body 1 and the second valve body 14 are inserted, the first valve body 1 and the second valve body 14 are enclosed to form a channel for communicating the vent hole 2 with the gas transmission hole 11. When the pressure of the gas in the external pipeline is larger than the pressure of the gas in the equipment, the gas flows into the equipment from the external pipeline, and then the gas can be supplemented into the equipment.

When the air pressure in the equipment is higher than the air pressure of the external pipeline, the gas enters the external pipeline from the equipment, and the gas in the equipment can be recovered. First valve body 1 and second valve body 14 can be dismantled and connect, in order to make second valve body 14 reliably the joint on first valve body 1, installs a plurality of chucking spare on second valve body 14. Can have seted up draw-in groove 16 on the outer peripheral face of first valve body 1, link up on second valve body 14 and seted up a plurality of screw holes, after second valve body 14 and the cooperation of 1 joint of first valve body, through the corresponding locating pin of threaded connection on a plurality of screw holes, locating pin and screw hole threaded connection to the tip of locating pin supports and leans on in draw-in groove 16, thereby makes first valve body 1 and second valve body 14 can connect reliably. When disassembly is required, the corresponding locating pin is removed from the second valve body 14.

As an embodiment of the gas communication joint provided by the present invention, please refer to fig. 1 to 5, the clamping member is a positioning bead 3, the plurality of positioning beads 3 are disposed along the circumferential direction of the second valve body 14, and the outer circumferential surface of the first valve body 1 is provided with a clamping groove 16 for clamping with the plurality of positioning beads 3. In order to further facilitate the tight connection of the first valve body 1 and the second valve body 14, a flared sleeve is provided at the open end of the second valve body 14, i.e. the end of the second valve body 14 close to the first valve body 1, in which a plurality of clamping members, i.e. positioning beads 3, are mounted.

The outer wall of the first valve body 1 is provided with a clamping groove 16, and the clamping groove 16 is formed along the circumferential direction of the outer wall of the first valve body 1. When the first valve body 1 is inserted into the second valve body 14, the outer circumferential surface of the first valve body 1 presses the positioning beads 3, so that the springs in the positioning beads 3 are compressed. Along with the continuation motion of first valve body 1, final location pearl 3 joint is in draw-in groove 16 to make first valve body 1 and second valve body 14 reliably connect, set up the aim at that the flaring overlaps and give off a space for location pearl 3.

As a specific embodiment of the gas communication joint provided by the present invention, please refer to fig. 1 to 5, a sealing sleeve 12 for abutting against the outer periphery of the first valve body 1 is fixed on the inner wall of the second valve body 14, and the second clamping platform 13 is arranged on the inner wall of the sealing sleeve 12. The end part of the first valve body 1 close to the second valve body 14 is an open end, and the first valve body 1 needs to be in plug-in fit with the second valve body 14, so that the connection is more convenient, the end part of the first valve body 1 is provided with a reducing sleeve, and the outer diameter of the reducing sleeve is gradually reduced from the connection part of the reducing sleeve and the first valve body 1 to the direction of the second valve body 14. In order to enable the first valve body 1 and the second valve body 14 to be connected in a sealing mode, a sealing sleeve 12 is fixed on the inner wall of the second valve body 14, the outer wall of the sealing sleeve 12 is attached to the inner wall of the second valve body 14, and the end face of the sealing sleeve 12 is used for being attached to the outer peripheral face of the open end of the first valve body 1, namely the outer peripheral face of the reducing sleeve.

Make first valve body 1 and second valve body 14 reliably connect under the effect of chucking spare, when chucking spare joint was in draw-in groove 16, the terminal surface laminating setting of the terminal surface of first valve body 1 and seal cover 12 to realize the sealed of first valve body 1 and second valve body 14, second ka tai 13 and seal cover 12 integrated into one piece.

Referring to fig. 3, as a specific embodiment of the gas communication joint provided by the present invention, a sliding sleeve 18 is sleeved on each of the first valve rod 4 and the second valve rod 8, and the sliding sleeve 18 is fixedly connected with the inner wall of the first valve body 1 and the inner wall of the second valve body 14 through a plurality of fixing rods 17. In order to allow gas to flow between the first valve element 1 and the second valve element 14, the outer peripheral surface of the first stem 4 is spaced apart from the first valve element 1, and the outer peripheral surface of the second stem 8 is spaced apart from the second valve element 14. First second valve rod 8 and first valve rod 4 contact earlier in this application to after second valve rod 8 moves the certain distance, second valve body 14 just airtight suit is on first valve body 1, at the in-process of the first valve body 1 motion of second valve body 14 drive, if do not set up any spacing measure on first valve rod 4 and the second valve rod 8, lead to easily because the disalignment of first valve rod 4 and second valve rod 8, and make the terminal surface that first valve rod 4 and second valve rod 8 contacted take place the slippage.

In order to avoid such accidents, sliding sleeves 18 are respectively sleeved on the first valve rod 4 and the second valve rod 8, a plurality of fixing rods 17 are fixed on the circumferential direction of the sliding sleeves 18, one end of each fixing rod 17 is fixed on the outer wall of the corresponding sliding sleeve 18, and the other end of each fixing rod 17 is fixed on the inner wall of the first valve body 1 or the inner wall of the corresponding second valve body 14. Can restrict the direction of motion of first valve rod 4 and second valve rod 8 through sliding sleeve 18, avoid the slippage of first valve rod 4 and second valve rod 8, in this application, first valve rod 4 cooperates with second valve rod 8 joint.

Referring to fig. 1 to 5 together, as an embodiment of the gas communication joint provided by the present invention, the first valve rod 4 is disposed along an axial direction of the first valve body 1, and the second valve rod 8 is disposed along an axial direction of the second valve body 14. Because the first valve body 1 and the second valve body 14 need to be matched in a plugging mode, and in the process of plugging the first valve body 1 and the second valve body 14, the first valve rod 4 and the second valve rod 8 move.

In order to ensure the tightness, the second valve body 14 needs to move along the axial direction of the first valve body 1, and the second valve rod 8 needs to move along the first valve rod 4, so that the reliability of the movement can be ensured.

As a specific embodiment of the gas communication joint provided by the present invention, please refer to fig. 5, the end portions of the first valve body 1 and the second valve body 14 are respectively connected with a first connecting plate 19 and a second connecting plate 20 by screw threads, the first connecting plate 19 and the vent hole 2 are opened on the first connecting plate 19, and the first elastic element 5 abuts against the side surface of the first connecting plate 19; the air delivery hole 11 is formed through the second connecting plate 20, and the second elastic element 10 abuts against the side surface of the second connecting plate 20.

Due to the different pressures of the gases in different devices, and the communication of the vent holes 2 with the devices, the gases in the devices act on the first chuck 7, and the first chuck 7 is pressed against the first clamping table 6 under the action of the first elastic member 5 and the first chuck 7. If the pressure of the gas in the apparatus is higher, the pressure of the gas in the external pipeline needs to be increased, so that the gas in the external pipeline acts on the second chuck 9 and pushes the first chuck 7 to move under the action of the second elastic member 10.

When the gas pressure in the device is higher than the maximum pressure of the external pipeline, the second valve rod 8 can not push the first valve rod 4 to move, namely, the first valve body 1 is still in a blocking state under the action of the gas of the device. In order to solve such problems, the first connection plate 19 is screwed to the first valve body 1, the second connection plate 20 is screwed to the second connection plate 20, and the first elastic member 5 or the second elastic member 10 is appropriately replaced according to the air pressure in the device in a manner that the connection plates are detachable, thereby ensuring the circulation of air.

A second aspect of an embodiment of the present invention provides a detection apparatus comprising a gas communication joint as defined in any one of the preceding claims.

The detection equipment provided by the invention has the beneficial effects that: compared with the prior art, the detection device is characterized in that the top of the first valve body 1 is provided with the vent hole 2, the first valve rod 4 slides along the axial direction of the first valve body 1, the first valve rod 4 is provided with the first elastic piece 5, and the first valve rod 4 opens and closes the vent hole 2 through the first elastic piece 5.

The second valve body 14 is located below the first valve body 1 and is used for being hermetically sleeved on the first valve body 1, and the second valve body 14 is also provided with an air delivery hole 11. The second valve rod 8 slides along the axial direction of the second valve body 14, and the second elastic member 10 is connected to the second valve rod 8. The second valve rod 8 opens and closes the gas transmission hole 11 through a second elastic piece 10, and the first elastic piece 5 and the second elastic piece 10 are respectively positioned at the end parts of the first valve rod 4 and the second valve rod 8 which are far away from each other.

In use, when the first valve body 1 and the second valve body 14 are not connected, the first valve rod 4 blocks the first valve body 1 under the action of the first elastic piece 5, and the second valve rod 8 blocks the second valve body 14 under the action of the second elastic piece 10. When the second valve body 14 is closely sleeved on the first valve body 1, the second valve rod 8 is in contact with the first valve rod 4 and drives the first valve rod 4 to move, the first elastic part 5 and the second elastic part 10 are compressed and contracted under the driving of the second valve rod 8, a channel for gas circulation is formed between the first valve body 1 and the second valve body 14, and the gas transmission hole 11 and the vent hole 2 are opened and communicated.

Gas can flow between the equipment and the external pipeline under the action of the pressure difference, and after the gas circulation is completed, the second valve body 14 is drawn out of the first valve body 1, and the vent hole 2 and the gas transmission hole 11 are in a sealed state again. In this application, can realize carrying out gaseous intercommunication between different equipment and the external pipeline, need not to customize specific device, simple installation and suitability are stronger.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.