CN214471731U

CN214471731U - Valve inner leakage detection device

Info

Publication number: CN214471731U
Application number: CN202120475655.XU
Authority: CN
Inventors: 魏耀武; 徐磊; 王统; 李国峰
Original assignee: China Tobacco Henan Industrial Co Ltd
Current assignee: China Tobacco Henan Industrial Co Ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-10-22
Anticipated expiration: 2031-03-04

Abstract

The utility model discloses a valve inner leakage detection device, which comprises a shell; a one-way valve is arranged in the shell; the shell is tubular, and the one-way valve is arranged in the middle of the shell; one end of the shell is connected with an outlet of a valve to be detected, and a detection cavity is formed between the one-way valve and the valve; the flow direction of the one-way valve is a direction departing from the valve; a detection pipe is arranged on the shell and is communicated with the detection cavity; and a detection valve is arranged on the detection pipe. The utility model discloses can judge whether interior hourglass of valve.

Description

Valve inner leakage detection device

Technical Field

The utility model relates to a steam valve, concretely relates to leak detection device in valve.

Background

The leakage of the valve mainly comprises an inner leakage mode and an outer leakage mode, the leakage of the valve with the outer leakage can be found through visual observation, but the inner leakage of the valve is detected by adopting a manual detection method such as a hand touch method at present. The steam valve inner leakage is mainly carried out in a mode of sensing the temperature through a touch valve outlet pipeline, but a heat preservation device is arranged on a conveying pipeline of the steam valve for ensuring the use quality of steam, if the valve inner leakage is not serious, the valve inner leakage is difficult to find through a conventional detection means due to the heat insulation effect of heat preservation cotton, the water valve inner leakage is generally judged through an auscultation method such as water flow in the pipeline, the valve inner leakage is also difficult to find through non-serious inner leakage, whether the valve inner leakage is judged only through technical analysis reasoning through the change of equipment function parameters, and whether the valve inner leakage exists can not be visually detected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a leak detection device in valve to solve the technical problem among the prior art, it can be to the valve in leak judge.

The utility model provides a valve inner leakage detection device, which comprises a shell;

a one-way valve is arranged in the shell;

the shell is tubular, and the one-way valve is arranged in the middle of the shell;

one end of the shell is connected with an outlet of a valve to be detected, and a detection cavity is formed between the one-way valve and the valve; the flow direction of the one-way valve is a direction departing from the valve;

a detection pipe is arranged on the shell and is communicated with the detection cavity; and a detection valve is arranged on the detection pipe.

The valve internal leakage detection device as described above, wherein optionally, the number of the detection valves is two, and both the detection valves are installed on the detection pipe.

The device for detecting internal leakage of a valve as described above, wherein optionally, both ends of the housing are provided with flanges.

The valve internal leakage detection device as described above, wherein optionally, the check valve includes a base, a fixing frame, an elastic element, and a valve core;

the base is fixedly arranged in the shell, and a through hole is formed in the base;

the fixed frame is fixedly arranged in the shell and is positioned on one side of the base, which is far away from the valve;

one end of the elastic element is connected with the valve core, and the other end of the elastic element is connected with the fixed frame; the elastic element is used for pressing the valve core at the through hole.

The valve internal leakage detection device as described above, wherein optionally, the check valve further includes a guide rod, and one end of the guide rod is fixedly connected to the valve core;

the guide rod penetrates through the fixing frame in a sliding manner;

the elastic element is sleeved on the guide rod.

The valve internal leakage detection device as described above, wherein the diameter of the through hole is optionally gradually smaller in a direction approaching the valve.

The valve internal leakage detection device as described above, wherein optionally, the through hole is a taper hole; the valve core is conical and is matched with the conical hole.

The valve internal leakage detection device as described above, wherein optionally, the base is integrally formed with the housing.

Compared with the prior art, the utility model discloses a set up a casing in the valve exit, set up the check valve in the casing, form one through casing, check valve and detect the chamber, and be provided with on the casing one with detect the test tube of chamber intercommunication set up the check valve on the test tube, after the valve is closed, if the condition of hourglass in the valve existence, the fluid can enter into and detect the intracavity, after opening the check valve, has the fluid to flow to can the short-term test valve whether there is the condition of interior hourglass.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals:

1-shell, 2-one-way valve, 3-detection cavity, 4-detection tube, 5-detection valve, 6-valve;

11-a flange;

21-base, 22-fixing frame, 23-elastic element, 24-valve core, 25-through hole, 26-guide rod.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1, the present invention provides a device for detecting internal leakage of a valve 6, which comprises a housing 1; the housing 1 is used to support the entire structure.

A one-way valve 2 is arranged in the shell 1, and the one-way valve 2 is arranged in the shell; specifically, the outer periphery of the check valve 2 should be connected to the inner wall of the housing 1 in a sealing manner to ensure that the check valve 2 can ensure one-way flow. Specifically, the housing 1 is tubular, and the one-way valve 2 is disposed in the middle of the housing 1.

In implementation, one end of the shell 1 is connected with an outlet of a valve 6 to be detected, and a detection cavity 3 is formed between the one-way valve 2 and the valve 6; the flow direction of the one-way valve 2 is a direction departing from the valve 6; that is, when the pressure in the detection chamber 3 is high, the check valve 2 can be pushed to move by the pressure of the fluid, and when the pressure in the detection chamber 3 of the check valve 2 is low, the check valve 2 cannot be opened. More specifically, a detection tube 4 is arranged on the shell 1, and the detection tube 4 is communicated with the detection cavity 3; and a detection valve 5 is arranged on the detection pipe 4.

In the scheme, the one-way valve 2 has two functions, namely one-way conduction, and the condition that the fluid in the pipeline flows back to enter the detection cavity 3 to cause inaccurate detection is prevented; secondly, by utilizing the plugging force of the one-way valve 2 in the flowing direction, when the inner leakage exists, the one-way valve 2 can not be conducted.

When arranged, the housing 1 may be arranged vertically, the opening of the sensing tube 4 should be upward, and the opening of the sensing tube 4 should be slightly higher than the height of the check valve 2.

When in specific use, the shell 1 is connected in series with the outlet of the valve 6; after the valve 6 is closed, the pressure in the detection chamber 3 becomes lower as the fluid flows out, until the check valve 2 is closed. At this time, a sealed space is formed in the detection chamber 3. When the existence of the internal leakage needs to be detected, the detection valve 5 on the detection pipe 4 is opened, and after the detection pipe is kept still for a period of time, if the liquid level in the detection pipe 4 rises or fluid flows out, the situation that the valve 6 has the internal leakage is explained. And in case the valve 6 is opened, the check valve 5 should be closed.

As a preferred implementation manner, the number of the check valves 5 is two, and both the check valves 5 are installed on the check pipe 4. In specific implementation, a transparent tube may be disposed in the detection tube 4. By providing two check valves 5, it is advantageous to ensure that liquid does not flow out of the check valves 5 when the valve 6 is opened.

For the convenience of connection, both ends of the housing 1 are provided with flanges 11. In particular, it is connected in series between the line and the valve 6 by means of a flange 11. In particular, the sealing connection should be ensured during installation.

As a preferred implementation, the check valve 2 includes a base 21, a fixing frame 22, an elastic element 23 and a valve core 24; specifically, the base 21 is fixedly arranged in the housing 1, and a through hole 25 is formed in the base 21; the fixing frame 22 is fixedly arranged in the shell 1, and the fixing frame 22 is positioned on one side of the base 21 away from the valve 6; one end of the elastic element 23 is connected with the valve core 24, and the other end is connected with the fixed frame 22; the elastic element 23 is used for pressing the valve core 24 at the through hole 25. Further, the elastic element 23 is a spring, and the existence of the spring mainly has the function of raising the pressure in the detection cavity 3 when slight internal leakage occurs, so that the valve core 24 cannot be jacked open. So that the fluid change in the sensing tube 4 can be conveniently observed when the sensing valve 5 is opened. The function of the fixing frame 22 is to provide support for the elastic element 23, and in order not to affect the flow of the fluid, the fixing frame 22 cannot be a sealed plate, and should have holes for the fluid to pass through the fixing frame 22.

Furthermore, the check valve 2 further comprises a guide rod 26, and one end of the guide rod 26 is fixedly connected to the valve core 24; specifically, the guide rod 26 and the valve core 24 and the through hole 25 should be coaxially arranged, and preferably, the axis thereof should coincide with the center line of the housing 1. The guide rod 26 slides through the fixing frame 22; the elastic element 23 is sleeved on the guide rod 26. By arranging the guide rod 26, the moving precision of the valve core 24 can be improved, so that the matching precision between the valve core 24 and the through hole 25 is improved, and specifically, a rubber layer is coated on the outer surface of the valve core 24.

In a preferred embodiment, the through hole 25 has a diameter that is gradually smaller in a direction approaching the valve 6. More specifically, the through hole 25 is a tapered hole; the valve core 24 is conical and is matched with the conical hole.

The base 21 is integrally formed with the housing 1. Of course, the base 21 and the housing 1 may also be fixedly connected by welding or other connection methods, as long as the sealing between the periphery of the base 21 and the housing 1 is ensured.

The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above description is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation scope shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.

Claims

1. The utility model provides a leak detection device in valve which characterized in that: comprises a shell (1);

a one-way valve (2) is arranged in the shell (1), and the one-way valve (2) is arranged in the shell;

the shell (1) is tubular, and the one-way valve (2) is arranged in the middle of the shell (1);

one end of the shell (1) is connected with an outlet of a valve (6) to be detected, and a detection cavity (3) is formed between the one-way valve (2) and the valve (6); the flow direction of the one-way valve (2) is a direction departing from the valve (6);

a detection tube (4) is arranged on the shell (1), and the detection tube (4) is communicated with the detection cavity (3); and a detection valve (5) is arranged on the detection pipe (4).

2. The valve internal leakage detection device of claim 1, wherein: the number of the detection valves (5) is two, and the two detection valves (5) are arranged on the detection pipe (4).

3. The valve internal leakage detection device of claim 2, wherein: both ends of the shell (1) are provided with flanges (11).

4. The valve internal leakage detection device according to claim 1, 2 or 3, wherein: the check valve (2) comprises a base (21), a fixed frame (22), an elastic element (23) and a valve core (24);

the base (21) is fixedly arranged in the shell (1), and a through hole (25) is formed in the base (21);

the fixing frame (22) is fixedly arranged in the shell (1), and the fixing frame (22) is positioned on one side, away from the valve (6), of the base (21);

one end of the elastic element (23) is connected with the valve core (24), and the other end of the elastic element is connected with the fixed frame (22); the elastic element (23) is used for pressing the valve core (24) at the through hole (25).

5. The valve internal leakage detection device of claim 4, wherein: the check valve (2) further comprises a guide rod (26), and one end of the guide rod (26) is fixedly connected to the valve core (24);

the guide rod (26) slides through the fixed frame (22);

the elastic element (23) is sleeved on the guide rod (26).

6. The valve internal leakage detection device of claim 4, wherein: the diameter of the through hole (25) is gradually reduced along the direction close to the valve (6).

7. The valve internal leakage detection device of claim 6, wherein: the through hole (25) is a taper hole; the valve core (24) is conical and is matched with the conical hole.

8. The valve internal leakage detection device of claim 6, wherein: the base (21) and the shell (1) are integrally formed.