CN211401585U

CN211401585U - A gas tightness testing arrangement for valve

Info

Publication number: CN211401585U
Application number: CN202020286709.3U
Authority: CN
Inventors: 于瑞连; 赵萍; 王爱娟
Original assignee: Qingdao Yingli Machinery Co ltd
Current assignee: Qingdao Yingli Machinery Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-09-01
Anticipated expiration: 2030-03-10

Abstract

The utility model discloses an air tightness testing arrangement for valve, including the detection case, detection case upper portion lid has closed the top cap, and the top cap bottom surface closes the fixed bonding of department with the detection case lid and has round joint strip, top cap bottom intermediate position fixedly connected with goes up sealing rubber lid, the vertical fixedly connected with brace table that makes progress of detection case inner chamber bottom intermediate position. The utility model discloses an outwards twitch the pull rod and drive rubber piston twitch in circular chamber port department in the condition that the top cap was opened, close the lower port lid of valve on the sealing pad of brace table, then the lid closes the top cap, the last sealing rubber lid sealing lid of top cap bottom closes the valve and goes out the port, then twist the butterfly bolt screw thread on top cap upper portion and close on detection case upper portion, then the pressfitting pull rod drives rubber piston and forms atmospheric pressure in circular intracavity, then operating personnel observes the barometer of detection case front side, see to indicate whether rotatory, in case rotatory description valve gas leakage, moreover, the steam generator is simple in structure, high convenience and rapidness.

Description

A gas tightness testing arrangement for valve

Technical Field

The utility model relates to a valve quality testing technical field specifically is an air tightness testing arrangement for valve.

Background

At present, a valve is a pipeline accessory used for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters of a conveying medium, the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, the valve can be generally sealed by filling a winding rubber belt on threads during installation, but the leakage of gas except water vapor is accompanied with serious pollution in the transportation process.

The CN207937131U patent publication (bulletin) discloses an air tightness testing device for a valve, which comprises an air injection pipe, a detection curved pipe and a valve, wherein the left end of the air injection pipe and the right end of the detection curved pipe are both welded with a valve clamping main sleeve, the front surface of the valve clamping main sleeve is tightly attached with a valve clamping auxiliary sleeve, the upper end and the lower end of the outer side wall of the valve clamping main sleeve and the outer side wall of the valve clamping auxiliary sleeve are both provided with fastening screw holes, the valve clamping main sleeve and the valve clamping auxiliary sleeve are fixed by screwing fastening bolts, the two ends of the valve are clamped, one end of the valve is injected by repeatedly pressing a pressing plate, whether the valve is closed or not is detected before the air injection, the device is placed still after the air injection, if the position of a float is detected to change, the air tightness problem of the valve is solved, if the position of the float is not obviously changed after the repeated air injection for many times, the air tightness of the, can be used in order to save the space occupied by the gas injection box.

However, the inventor finds that the technical scheme still has at least the following defects:

the air tightness detection mechanism arranged in the technical scheme needs to use electrical equipment, has high failure rate and high operation cost, and is not suitable for wide popularization.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air tightness testing arrangement for valve has solved the problem that proposes among the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a gas tightness testing device for a valve comprises a detection box, wherein a top cover covers the upper part of the detection box, a circle of sealing rubber strip is fixedly bonded at the joint of the bottom surface of the top cover and the detection box, an upper sealing rubber cover is fixedly connected to the middle position of the bottom of the top cover, a supporting table is fixedly connected to the middle position of the bottom of an inner cavity of the detection box vertically and upwards, and a barometer is fixedly embedded in the middle part of the front side of the detection box in a sealing manner at a position above the middle position;

the supporting table is fixedly connected with a sealing gasket at the upper part, a circular cavity is horizontally formed in the bottom of the detection box leftwards, a rubber piston is movably and closely arranged in the circular cavity, a pull rod is fixedly connected to the middle position of the left end face of the rubber piston, the middle position of the supporting table is fixedly communicated with the head end of a gas pipe, and the tail end of the gas pipe is fixedly and hermetically communicated with the circular cavity.

As a preferred embodiment of the present invention, the handle is fixedly connected to the middle position of the upper portion of the top cover.

As an optimized embodiment of the utility model, the butterfly bolt is screwed on the equal vertical downward screw thread in middle part of four sides of top cap.

As a preferred embodiment of the utility model, the left end of the pull rod is fixedly connected with a handle.

As a preferred embodiment of the present invention, a valve is fixedly clamped between the sealing gasket and the upper sealing rubber cover.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses an outwards twitch the pull rod and drive rubber piston twitch in circular chamber port department in the condition that the top cap was opened, close the lower port lid of valve on the sealing pad of brace table, then the lid closes the top cap, the last sealing rubber lid sealing lid of top cap bottom closes the valve and goes out the port, then twist the butterfly bolt screw thread on top cap upper portion and close on detection case upper portion, then the pressfitting pull rod drives rubber piston and forms atmospheric pressure in circular intracavity, then operating personnel observes the barometer of detection case front side, see to indicate whether rotatory, in case rotatory description valve gas leakage, moreover, the steam generator is simple in structure, high convenience and rapidness.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic overall structure diagram of an air tightness testing device for a valve according to the present invention;

fig. 2 is a schematic diagram of the sectional structure of the valve of the air tightness testing device for the valve in the detection box.

In the figure: the device comprises a detection box 1, a butterfly bolt 2, a top cover 3, a handle 4, a barometer 5, a pull rod 6, an upper sealing rubber cover 7, a sealing rubber strip 8, a valve 9, a support table 10, a gas pipe 11, a rubber piston 12, a circular cavity 13 and a sealing gasket 14.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a gas tightness testing device for a valve comprises a detection box 1, a top cover 3 covers the upper part of the detection box 1, a circle of sealing rubber strip 8 is fixedly bonded at the covering part of the bottom surface of the top cover 3 and the detection box 1, an upper sealing rubber cover 7 is fixedly connected at the middle position of the bottom of the top cover 3, a supporting table 10 is vertically and upwardly fixedly connected at the middle position of the bottom of an inner cavity of the detection box 1, and a barometer 5 is fixedly embedded at the upper position of the middle part of the front side of the detection box 1;

the upper portion of the supporting table 10 is fixedly connected with a sealing gasket 14, the bottom of the detection box 1 is horizontally provided with a circular cavity 13 leftwards, a rubber piston 12 is movably sealed in the circular cavity 13, a pull rod 6 is fixedly connected to the middle position of the left end face of the rubber piston 12, the middle position of the supporting table 10 is fixedly communicated with the head end of the gas pipe 11, and the tail end of the gas pipe 11 is fixedly and hermetically communicated with the circular cavity 6.

In this embodiment (see fig. 1), a handle 4 is fixedly connected to the middle position of the upper portion of the top cover 3, so that an operator can conveniently pick up the top cover 3 from the handle 4.

In this embodiment (see fig. 1), butterfly bolts 2 are screwed vertically downwards in the middle of the four side edges of the top cover 3.

In this embodiment (see fig. 1), a handle is fixedly connected to the left end of the pull rod 6.

In this embodiment (see fig. 2), the valve 9 is fixedly clamped between the sealing gasket 14 and the upper sealing rubber cover 7.

When an airtightness testing device for valves is used, need explain, the utility model relates to an airtightness testing device for valves, including detection case 1, butterfly bolt 2, top cap 3, handle 4, barometer 5, pull rod 6, go up sealing rubber lid 7, joint strip 8, valve 9, a supporting bench 10, gas-supply pipe 11, rubber piston 12, circular chamber 13, sealed pad 14, the part is general standard component or the part that technical staff in the field knows, and its structure and principle all are that this technical staff all can learn through the technical manual or learn through conventional experimental method.

During the use, pull rod 6 is outwards twitched to the condition that top cap 3 was opened and is driven rubber piston 12 twitch at circular cavity 13 port department, close the lower port lid of valve 9 on sealed pad 14 on a supporting bench 10, then close top cap 3, the last sealed rubber lid 7 of top cap 3 bottom seals and closes the last port of valve 9 and goes out, then twist the butterfly bolt 2 screw thread on top cap 3 upper portion on detection case 1 upper portion, then pressfitting pull rod 6 drives rubber piston 12 and forms atmospheric pressure in circular cavity 13, then operating personnel observes barometer 5 of detection case 1 front side, see to indicate just rotatory, in case rotatory explanation valve 9 gas leakage, moreover, the steam generator is simple in structure, and is convenient and fast.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A gas tightness testing device for a valve, comprising a detection box (1), characterized in that: a top cover (3) is covered on the upper part of the detection box (1), a circle of sealing rubber strip (8) is fixedly bonded at the covered part of the bottom surface of the top cover (3) and the detection box (1), an upper sealing rubber cover (7) is fixedly connected at the middle position of the bottom of the top cover (3), a support table (10) is vertically and upwardly fixedly connected at the middle position of the bottom of an inner cavity of the detection box (1), and a barometer (5) is fixedly sealed and embedded at the upper position of the middle part of the front side of the detection box (1);

supporting bench (10) upper portion fixedly connected with sealed pad (14), round cavity (13) have been seted up to detection case (1) bottom level left, and round cavity (13) interior activity driving fit has rubber piston (12), and rubber piston (12) left end face intermediate position fixedly connected with pull rod (6), supporting bench (10) intermediate position and gas-supply pipe (11) head end are fixed to be communicated, and gas-supply pipe (11) tail end and round cavity (13) fixed seal communicate.

2. A tightness testing device for a valve according to claim 1, wherein: the middle position of the upper part of the top cover (3) is fixedly connected with a handle (4).

3. A tightness testing device for a valve according to claim 1, wherein: butterfly bolts (2) are screwed in the middle parts of the four side edges of the top cover (3) vertically and downwards in a threaded manner.

4. A tightness testing device for a valve according to claim 1, wherein: a handle is fixedly connected with the left end part of the pull rod (6).

5. A tightness testing device for a valve according to claim 1, wherein: and a valve (9) is fixedly clamped between the sealing gasket (14) and the upper sealing rubber cover (7).