CN210719548U

CN210719548U - Port sealing tool and valve airtightness detection tool

Info

Publication number: CN210719548U
Application number: CN201922000749.7U
Authority: CN
Inventors: 唐显君; 杨欢; 吴郁婷; 董德生; 钟萍
Original assignee: Sichuan Aerospace Changzheng Equipment Manufacturing Co Ltd
Current assignee: Sichuan Aerospace Changzheng Equipment Manufacturing Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-06-09
Anticipated expiration: 2029-11-19

Abstract

The utility model provides a port sealing tool and a valve airtightness detection tool, wherein the sealing tool comprises a blanking cover, a hoop ring and a sealing ring; the fixed cover of band is located the port outside of treating sealed work piece, and the band outside sets up for the radial convex journal stirrup of band, the stifled lid inner circle set up with the hoop on the hoop journal stirrup groove of journal stirrup adaptation, the stifled lid is located the port outside of treating sealed work piece and is connected with the journal stirrup buckle of band through the journal stirrup groove, the sealing washer sets up in the stifled lid inner circle and treats between the port outside of sealed work piece. The tool can realize reliable and efficient clamping and sealing of the port.

Description

Port sealing tool and valve airtightness detection tool

Technical Field

The utility model belongs to the technical field of sealing device, concretely relates to port seals frock, especially a sealed frock that detects that is used for valve leakproofness to test.

Background

In the field of valves, space valves are a more complex class of valves in valve products. In the valve test process, the air tightness test is particularly important, and the air tightness performance of the valve directly influences the delivery and the use of the valve. In the air tightness test process, the valve port is sealed through a sealing tool, and the sealing tool is connected with a testing device to check the air tightness of the valve. The existing sealing tool usually adopts a rubber screw to fix the sealing plug cover at the valve port, the screwed rubber screw is in point contact with the valve port, the local pressure at the contact part is too large, the valve can be damaged, the sealing performance of the plug cover is poor, and secondly, when the test is carried out, the pressure in the valve is large, and the plug cover can fly out to hurt an operator due to the infirm sealing.

SUMMERY OF THE UTILITY MODEL

Based on above problem, an object of the utility model is to provide a port seals frock can realize reliable, high-efficient clamping and the sealing of port through this frock.

In order to realize the above purpose, the utility model discloses a technical scheme be: a port sealing tool comprises a plugging cover, a hoop ring and a sealing ring; the fixed cover of band is located the port outside of treating sealed work piece, and the band outside sets up for the radial convex journal stirrup of band, the stifled lid inner circle set up with the hoop on the hoop journal stirrup groove of journal stirrup adaptation, the stifled lid is located the port outside of treating sealed work piece and is connected with the journal stirrup buckle of band through the journal stirrup groove, the sealing washer sets up in the stifled lid inner circle and treats between the port outside of sealed work piece.

The utility model also provides a valve air tightness detection tool, which comprises a blocking cover, a hoop ring and a sealing ring; the valve comprises a valve body, a valve core, a valve ring, a sealing ring, a hoop ring, a support lug, a blocking cover, a ring-shaped support lug groove and a ring-shaped support lug, wherein the valve body is provided with a valve port to be sealed; the blocking cover is provided with a pipe connecting opening, and the pipe connecting opening is connected with the air tightness detection device through a pipeline.

Specifically, the valve port to be sealed is provided with a circumferential groove, the inner ring of the hoop is provided with a circumferential convex ring matched with the circumferential groove, and the hoop is embedded in the circumferential groove through the circumferential convex ring so as to be fixedly sleeved outside the valve port to be sealed; furthermore, the hoop is formed by sequentially abutting and splicing a plurality of arc-shaped hoop blocks.

Specifically, blanking cover inner circle opening part set up with hoop journal stirrup groove intercommunication and with the axial draw-in groove of the journal stirrup adaptation of hoop, when the hoop be the elastic component, can directly pack the hoop into the blanking cover after overlap in the valve port outside, in order to strengthen the steadiness of frock, the hoop adopts stainless steel with the blanking cover, at this moment, the hoop is whole can not install in the blanking cover, axial draw-in groove has been set up on the blanking cover, overlap the hoop at the valve port outside earlier, then correspond the draw-in groove of blanking cover and the journal stirrup position of hoop, promote the blanking cover to make the journal stirrup of hoop get into the draw-in groove, it makes the journal stirrup get into the journal stirrup groove and stagger with the draw-in groove to rotate the blanking cover, can be fixed in the valve port with the hoop with the blanking cover outside.

The utility model has the advantages that:

the utility model provides a frock is detected to port sealing frock and valve gas tightness, it is outside to be fixed in work piece port with the hoop, the cooperation that adopts journal stirrup and journal stirrup groove is outside in order to be fixed in work piece port with the blanking cover, the blanking cover is pressing the sealing washer and is carrying out the hoop seal to valve port outside, the outside circumference atress of valve, can not produce the problem that local atress is big in order to crush the work piece, guarantee the leakproofness simultaneously, in gas tightness test process, even the reinforcing of valve internal gas pressure, under the blanking cover restriction, the hoop can not drop from the valve port yet, thereby guarantee operating personnel's safety.

Drawings

FIG. 1 is a schematic view of a valve airtightness detection tool in an embodiment;

FIG. 2 is a schematic view of a ferrule;

FIG. 3 is a schematic view of a closure;

wherein, 1 is the blanking cover, 11 is the draw-in groove, 2 is the hoop, 21 is the journal stirrup, 22 is the bulge loop, 23 is the hoop piece, 3 is the sealing washer, 4 is the valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Examples

As shown in fig. 1, the embodiment provides a valve airtightness detection tool, which includes a plug cover 1, a ferrule 2, and a sealing ring 3; the valve to be sealed 4 is provided with a circumferential groove at the outer part of a port, the inner ring of the hoop ring 2 is provided with a circumferential convex ring 22 matched with the circumferential groove, the hoop ring 2 is embedded in the circumferential groove through the circumferential convex ring 22 to be fixedly sleeved outside the port of the valve to be sealed 4, the outer part of the hoop ring 2 is provided with a support lug 21 radially protruding relative to the hoop ring 2, the inner ring of the plugging cover 1 is provided with a circumferential support lug groove matched with the support lug 21 on the hoop ring 2, the plugging cover 1 is covered at the outer part of the port of the valve to be sealed 4 and is connected with the support lug 21 of the hoop ring 2 through the support lug groove in a buckling manner, and the sealing ring 3 is arranged between the inner ring of the plugging cover; wherein, the plugging cover 1 is provided with a pipe connecting port, and the pipe connecting port is connected with an air tightness detection device (not shown) through a pipeline.

In this embodiment, the hoop 2 and the plug cover 1 are made of stainless steel, as shown in fig. 2, the hoop 2 is formed by two half-circle arc-shaped hoop blocks 23 which are abutted and spliced, and each hoop block 23 is provided with a support lug 21; as shown in fig. 3, an axial slot 11 is arranged at an opening of an inner ring of the blocking cover 1, and is communicated with the circumferential lug groove and matched with the lug 21 of the hoop 2.

The valve gas tightness that this embodiment provided detects frock, during the use, earlier with the hoop splice amalgamation in the valve port outside, make the bulge loop of hoop inlay in the recess of valve port, then correspond the department with the draw-in groove of blanking cover and the journal stirrup position of hoop, promote the blanking cover and make the journal stirrup entering draw-in groove of hoop, it makes the journal stirrup and the draw-in groove stagger the back entering journal stirrup groove and stagger with the draw-in groove to rotate the blanking cover, can be fixed in valve port outside with hoop and blanking cover, blanking cover 1 is sealed with the valve port this moment, it can carry out the gas tightness detection to the valve to start gas tightness detection device at last.

The above embodiments of the present invention are merely examples for illustrating the present invention and are not intended to limit the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes or variations which are introduced by the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A port sealing tool is characterized by comprising a plugging cover, a hoop ring and a sealing ring; the fixed cover of band is located the port outside of treating sealed work piece, and the band outside sets up for the radial convex journal stirrup of band, the stifled lid inner circle set up with the hoop on the hoop journal stirrup groove of journal stirrup adaptation, the stifled lid is located the port outside of treating sealed work piece and is connected with the journal stirrup buckle of band through the journal stirrup groove, the sealing washer sets up in the stifled lid inner circle and treats between the port outside of sealed work piece.

2. The valve airtightness detection tool is characterized by comprising a blocking cover, a hoop and a sealing ring; the valve comprises a valve body, a valve core, a valve ring, a sealing ring, a hoop ring, a support lug, a blocking cover, a ring-shaped support lug groove and a ring-shaped support lug, wherein the valve body is provided with a valve port to be sealed; the blocking cover is provided with a pipe connecting opening, and the pipe connecting opening is connected with the air tightness detection device through a pipeline.

3. The valve airtightness detection tool according to claim 2, wherein a circumferential groove is formed in the outer portion of the port of the valve to be sealed, a circumferential protruding ring matched with the circumferential groove is arranged on an inner ring of the hoop, and the hoop is embedded in the circumferential groove through the circumferential protruding ring so as to be fixedly sleeved on the outer portion of the port of the valve to be sealed.

4. The valve airtightness detection tool according to claim 3, wherein the hoop is formed by sequentially abutting and splicing a plurality of arc-shaped hoop blocks, and at least one support lug is arranged on each hoop block.

5. The valve airtightness detection tool according to claim 3 or 4, wherein an axial clamping groove which is communicated with the annular lug groove and is adapted to the lug of the hoop is formed in the opening of the inner ring of the blocking cover.