CN210426893U - Valve leakage detection device - Google Patents
Valve leakage detection device Download PDFInfo
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- CN210426893U CN210426893U CN201921400870.2U CN201921400870U CN210426893U CN 210426893 U CN210426893 U CN 210426893U CN 201921400870 U CN201921400870 U CN 201921400870U CN 210426893 U CN210426893 U CN 210426893U
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Abstract
The utility model discloses a valve leakage detection device, which comprises a first main pipeline (1) connected with a first port of a valve (20) to be tested and a second main pipeline (2) connected with a second port of the valve (20) to be tested; a first branch pipe (3) and an open second branch pipe (4) are sequentially arranged on the first main pipe along the direction towards the valve (20) to be tested, a third valve (8) positioned between the first branch pipe (3) and the second branch pipe (4) is arranged on the first main pipe, a pressure gauge (13) is arranged on the first branch pipe (3), and a fourth valve (9) is arranged on the second branch pipe (4); the second main pipeline is provided with an open third branch pipe (5), and the third branch pipe (5) is provided with a fifth valve (10); the utility model provides a valve leak testing device simple structure, it is with low costs to experimental easy operation, it is efficient, easily observe.
Description
Technical Field
The utility model relates to the technical field of valves, specifically, relate to a valve leak testing device.
Background
Along with the rapid development of the petrochemical industry, the strict requirements on valves at important parts of a plurality of petrochemical devices in China are particularly high, and if the valves are not good in strict requirements, the devices can be directly shut down. Typically these valves will purchase an inlet ball valve. The quality inspection before the valve is installed is very important for both owners and manufacturers, so that the manufacturers need to witness the leakage test of the valve on site after the valve arrives, and the valve is in a dry state and is not allowed to use water as an experimental medium.
At present, in a common valve leakage test, a corresponding valve test clamping fixture is required to be manufactured according to different calibers, a valve needs to be hoisted back and forth in the test process, the operation is complex during the test, and the test efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that the leak test complex operation, the test efficiency of valve are low among the prior art.
In order to achieve the above object, an aspect of the present invention provides a valve leakage detecting apparatus, which includes a first main pipe for connecting to a first port of a valve to be tested and a second main pipe for connecting to a second port of the valve to be tested;
a first branch pipe and an open second branch pipe are sequentially arranged on the first main pipe along the direction towards the valve to be tested, wherein a third valve positioned between the first branch pipe and the second branch pipe is arranged on the first main pipe, a pressure gauge is arranged on the first branch pipe, and a fourth valve is arranged on the second branch pipe;
and an open third branch pipe is arranged on the second main pipeline, and a fifth valve is arranged on the third branch pipe.
Preferably, the first main pipeline is further provided with a first valve, the first valve is far away from the valve to be tested compared with the first branch pipeline, and the first branch pipeline is provided with a second valve.
Preferably, a sixth valve is further disposed on the second main pipeline, and the sixth valve is farther from the valve to be tested than the third branch pipeline.
Preferably, the valve leakage detection device further comprises a first connecting pipe for connecting with an air source, and a seventh valve is arranged on the first connecting pipe;
the valve leakage detection device also comprises a second connecting pipe used for being connected into a container containing liquid;
wherein the first connection pipe is selectively connectable to one of the first main pipeline and the second main pipeline, and the second connection pipe is selectively connectable to the other.
Preferably, the first connecting pipe and the second connecting pipe are both flexible pipes.
Preferably, the first connecting pipe and the second connecting pipe are respectively provided with a quick coupling at the end thereof, and the first main pipe and the second main pipe are respectively provided with a quick coupling socket connected with the quick coupling.
Preferably, one end of the first main pipeline, which is connected with the valve to be tested, is connected with a first flange plate used for being connected with the valve to be tested;
one end of the second main pipeline, which is connected with the valve to be tested, is connected with a second flange plate which is used for being connected with the valve to be tested.
Preferably, the first main pipeline is connected with a first movable joint with threads, the first flange plate is provided with a threaded joint in threaded fit with the first movable joint, and the first movable joint is in threaded connection with the first flange plate;
the second flange plate is provided with a bolt joint in threaded fit with the second loose joint, and the second loose joint is in threaded connection with the second flange plate.
Preferably, the valve leak detection apparatus further comprises a container for containing a liquid.
Preferably, the valve leak detection device further comprises a gas source.
The utility model provides a valve leak testing device simple structure, it is with low costs to experimental easy operation, it is efficient, easily observe. Compare traditional valve leakage test, the valve need not make independent mould, need not make a round trip to hoist and mount the valve, only need connect the valve on the spot can, provide convenience for the inspection of the higher valve of leakproofness requirement.
Drawings
Fig. 1 is a schematic structural view of a valve leakage detecting apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the valve leakage detection device during reverse detection.
Description of the reference numerals
1-a first main pipeline; 2-a second main pipeline; 3-a first branch pipe; 4-a second manifold; 5-a third branch pipe; 6-a first valve; 7-a second valve; 8-a third valve; 9-a fourth valve; 10-a fifth valve; 11-a sixth valve; 12-a seventh valve; 13-pressure gauge; 14-a quick coupling; 15-quick coupling socket; 16-a first loose joint; 17-a second loose joint; 18-a first flange; 19-a second flange; 20-a valve to be tested; 21-a first connection pipe; 22-a second connecting tube; 23-a gas source; 24-container.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", 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, and do not indicate or imply that the device or element 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. The term "inside" and "outside" refer to the inside and the outside of the contour of each member itself.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The utility model provides a valve leakage detection device, as shown in figure 1, the valve leakage detection device comprises a first main pipeline 1 connected with a first port of a valve 20 to be tested and a second main pipeline 2 connected with a second port of the valve 20 to be tested;
a first branch pipe 3 and a second branch pipe 4 with an open tail end are sequentially arranged on the first main pipeline 1 along the direction towards the valve 20 to be tested, wherein a third valve 8 positioned between the first branch pipe 3 and the second branch pipe 4 is arranged on the first main pipeline 1, a pressure gauge 13 is arranged on the first branch pipe 3, and a fourth valve 9 is arranged on the second branch pipe 4;
the second main pipeline 2 is provided with a third branch pipe 5 with an open tail end, and the third branch pipe 5 is provided with a fifth valve 10.
The valve leak detection device also includes a container 24 for containing a liquid and a gas source 23.
Utilize the utility model provides a valve leakage detection device carries out the leakage detection time measuring to the valve 20 of awaiting measuring, be connected to first main line 1 to air supply 23, second main line 2 is connected to in the container 24 that holds liquid to open fifth valve 10 on the third branch pipe 5 in order to ensure no gas pressure in the second main line 2, then close third valve 8, and make in the gas of air supply 23 accesss to first main line 1, manometer 13 on the first branch pipe 3 can detect the stability of air supply pressure. In the process, it is necessary to detect whether the third valve 8 leaks to ensure that the pressure detected by the pressure gauge 13 is accurate, and at this time, the fourth valve 9 is opened, and if there is an air flow at the end of the second branch pipe 4 (whether there is an air flow can be sensed by placing a hand or other part at the end of the second branch pipe 4), which indicates that the third valve 8 leaks, the third valve 8 is replaced. Then, the fifth valve 10 is closed, the fourth valve 9 is closed again, whether bubbles appear in the container 24 connected to the second main pipeline 2 is observed, if bubbles appear, the valve 20 to be tested leaks, and the gas in the first main pipeline 1 leaks into the second main pipeline 2 through the valve 20 to be tested.
The utility model provides a valve leak testing device simple structure, it is with low costs to experimental easy operation, it is efficient, easily observe. Compare traditional valve leakage test, the valve need not make independent mould, need not make a round trip to hoist and mount the valve, only need connect the valve on the spot can, provide convenience for the inspection of the higher valve of leakproofness requirement.
The following structural drawings further describe the technical scheme provided by the invention in detail.
In a specific embodiment of the present invention, in order to conveniently control the flow of gas in the pipeline, preferably, as shown in fig. 1, a first valve 6 is further disposed on the first main pipeline 1, the first valve 6 is compared with the first branch pipe 3, the first branch pipe 3 is far away from the valve to be tested 20, and a second valve 7 is disposed on the first branch pipe 3. The first valve 6 and the second valve 7 are in an open state during the sensing process and can be closed when air intake is not required.
In this embodiment, in order to better verify the tightness of the valve 20 to be tested, the valve 20 to be tested may be respectively subjected to forward detection and reverse detection. In the forward direction, the gas source 24 is connected to the first main pipeline 1, and the second main pipeline 2 is connected to the container 23 (the structure shown in fig. 1) with liquid, so that whether the gas leaks from the first main pipeline 1 into the second main pipeline 2 through the valve 20 to be tested can be detected from the forward direction; in the reverse direction detection, the gas source 24 is connected to the second main line 2, and the first main line 1 is connected to the container 23 with liquid (the structure shown in fig. 2), whereby it is possible to detect from the reverse direction whether gas leaks from the second main line 2 into the first main line 1 through the valve 20 to be tested.
For the convenience of forward and reverse detection, the connections of the gas source 23 and the container 24 to the first main line 1 and the second main line 2 can be easily interchanged. Preferably, the valve leakage detecting device further comprises a first connecting pipe 21 for connecting to a gas source 23, and a seventh valve 12 is arranged on the first connecting pipe 21; the valve leakage detecting apparatus further includes a second connection tube 22 for connecting to a container 24 containing a liquid; wherein said first connection pipe 21 is selectively connectable to one of the first main pipe 1 and the second main pipe 2, and said second connection pipe 22 is selectively connectable to the other. Preferably, the first main pipeline 1 and the second main pipeline 2 are rigid pipelines, preferably stainless steel pipes, for example, stainless steel pipes with a diameter of 10mm can be used; the first connection pipe 21 and the second connection pipe 22 are both flexible pipes, and may be transparent rubber pipes with a diameter of 10mm, for example.
At the time of the forward direction detection, as shown in fig. 1, first connection pipe 21 may be selectively connected to first main pipeline 1 such that first main pipeline 1 is connected to gas source 23, and second connection pipe 22 is connected to second main pipeline 2 such that second main pipeline 2 is connected to container 24; at the time of the reverse direction detection, as shown in fig. 2, second connection pipe 22 is connected to second main line 2 so that second main line 2 is connected to gas source 23, and first connection pipe 21 is connected to first main line 1 so that first main line 1 is connected to container 24.
In this embodiment, in order to control the on/off of the second main pipeline 2, a sixth valve 11 is further disposed on the second main pipeline 2, and the sixth valve 11 is farther from the valve to be tested 20 than the third branch pipe 5. In the reverse direction, the sixth valve 11 may be first closed, the fifth valve 10 opened, and the end of the third branch pipe 5 opened to see whether there is air flow, so as to detect whether the sixth valve 11 leaks.
Generally, the port of the valve 20 to be tested is provided with a connecting flange, and in order to facilitate the connection of the first main pipeline 1 and the second main pipeline 2 with the valve 20 to be tested, a first flange 18 for connecting with the valve 20 to be tested is connected to one end of the first main pipeline 1 connected with the valve 20 to be tested;
one end of the second main pipeline 2 connected with the valve 20 to be tested is connected with a second flange 19 used for being connected with the valve 20 to be tested.
Preferably, a first movable joint 16 with threads is connected to the first main pipeline 1, a threaded joint in threaded fit with the first movable joint 16 is arranged on the first flange 18, and the first movable joint 16 is in threaded connection with the first flange 18;
the second main pipeline 2 is provided with a second movable joint 17 with threads, the second flange plate 19 is provided with a bolt joint in threaded fit with the second movable joint 17, and the second movable joint 17 is in threaded connection with the second flange plate 19.
When connecting, two ports of the valve 20 to be tested can be connected with the first flange 18 and the second flange 19 respectively, the first movable joint 16 is connected with the first main pipeline 1 and the second movable joint 17 is connected with the second main pipeline 2, then the first flange 18 is in threaded connection with the first movable joint 16, and the second flange 19 is in threaded connection with the second movable joint 17. The connection is more convenient in such a way.
A specific process of detecting a valve using the valve leakage detecting apparatus in the above embodiment will be described below.
Firstly, carrying out forward detection:
switching the valve 20 to be tested on a full scale once before testing, finally enabling the valve 20 to be tested to be in a closed state, and connecting a first port of the valve 20 to be tested with the first main pipeline 1 and a second port of the valve 20 to be tested with the second main pipeline 2;
closing the seventh valve 12 on the first connecting pipe 21 and connecting the first connecting pipe 21 connected with the air source 23 to the first main pipeline 1 through a quick coupling, wherein one end of the second connecting pipe 22 is connected to the second main pipeline 2 through a quick coupling, and the other end is connected to a container 24 for containing liquid;
opening the fifth valve 10 and the sixth valve 11 downstream of the valve to be tested 20 to ensure that no gas is present in the second main pipe 2 downstream of the valve to be tested 20;
opening the seventh valve 12, the first valve 6 and the second valve 7 upstream of the valve 20 to be tested, closing the third valve 8, observing whether the reading of the pressure gauge 13 reaches a certain pressure value (for example, 0.6MPa), and confirming the pressure of the air source 24;
opening the fourth valve 9, keeping the third valve 8 closed, observing whether gas flows out of the second branch pipe 4 (hands or other parts can be placed at the second branch pipe 4 to sense whether the gas flows out), if so, indicating that the gas flows leak to the other side through the third valve 8, and needing to replace the third valve 8, and if not, indicating that the third valve 8 does not leak;
and closing the fifth valve 10, closing the fourth valve 9 again, observing whether bubbles appear in the container 24, if bubbles appear, indicating that gas leaks through the valve 20 to be tested, and if no bubbles appear, indicating that the valve 20 to be tested does not leak.
And after the forward detection is finished, performing reverse detection:
closing the seventh valve 12, and opening the fourth valve 9 to let the gas in the first main pipeline 1 be discharged;
disconnecting quick coupling 14 of first connection pipe 21 from quick coupling socket 15 of first main line 1 and quick coupling 14 of second connection pipe 22 from quick coupling socket 15 of second main line 2;
a first connection pipe 21 to which a gas source 23 is connected to the second main line 2 through a quick coupling, and a second connection pipe 2 to which a container 24 is connected to the first main line 1 through a quick coupling, as shown in fig. 2;
closing the sixth valve 11, and observing whether gas flows out of the third branch pipe 5 to test whether the sixth valve 11 leaks;
by closing the fifth valve 10 in the fourth branch 5 and opening the sixth valve 11 and the seventh valve 12, gas from the gas source 23 can enter the second main line 2, so that it can be detected in the opposite direction whether gas can leak from one port to the other of the valves 20 to be detected.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. A valve leak detection device, characterized in that it comprises a first main line (1) for connection to a first port of a valve (20) to be tested and a second main line (2) for connection to a second port of the valve (20) to be tested;
a first branch pipe (3) and an open second branch pipe (4) are sequentially arranged on the first main pipeline (1) along the direction towards the valve (20) to be tested, wherein a third valve (8) positioned between the first branch pipe (3) and the second branch pipe (4) is arranged on the first main pipeline (1), a pressure gauge (13) is arranged on the first branch pipe (3), and a fourth valve (9) is arranged on the second branch pipe (4);
and the second main pipeline (2) is provided with an open third branch pipe (5), and the third branch pipe (5) is provided with a fifth valve (10).
2. Valve leakage detection device according to claim 1, wherein a first valve (6) is further arranged on the first main line (1), the first valve (6) being further remote from the valve to be tested (20) than the first branch line (3), and a second valve (7) being arranged on the first branch line (3).
3. Valve leakage detection device according to claim 1, wherein a sixth valve (11) is further arranged on the second main line (2), the sixth valve (11) being further remote from the valve to be tested (20) than the third branch line (5).
4. The valve leak detection device according to claim 3, further comprising a first connection pipe (21) for connecting a gas source (23), wherein a seventh valve (12) is provided on the first connection pipe (21);
the valve leakage detection device further comprises a second connection pipe (22) for connecting to a container (24) containing liquid;
wherein the first connection pipe (21) is selectively connectable to one of the first main line (1) and the second main line (2), and the second connection pipe (22) is selectively connectable to the other.
5. The valve leak detection device according to claim 4, wherein the first connection pipe (21) and the second connection pipe (22) are both flexible pipes.
6. Valve leakage detection device according to claim 4, characterized in that the ends of the first and second connection pipes (21, 22) are provided with quick couplings (14), respectively, and the first and second main pipelines (1, 2) are provided with quick coupling sockets (15) connected to the quick couplings (14), respectively.
7. Valve leakage detection device according to any of claims 1-6, characterized in that the end of the first main line (1) connected to the valve to be tested (20) is connected to a first flange (18) for connection to the valve to be tested (20);
one end of the second main pipeline (2) connected with the valve to be tested (20) is connected with a second flange (19) used for being connected with the valve to be tested (20).
8. The valve leakage detecting device according to claim 7, characterized in that a first movable joint (16) with threads is connected to the first main pipeline (1), the first flange (18) is provided with a threaded joint in threaded fit with the first movable joint (16), and the first movable joint (16) is in threaded connection with the first flange (18);
the second main pipeline (2) is provided with a second movable joint (17) with threads, the second flange plate (19) is provided with a bolt joint in threaded fit with the second movable joint (17), and the second movable joint (17) is in threaded connection with the second flange plate (19).
9. The valve leak detector of any one of claims 1-6, further comprising a container (24) for containing a liquid.
10. The valve leak detection device according to any one of claims 1 to 6, further comprising a gas source (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921400870.2U CN210426893U (en) | 2019-08-26 | 2019-08-26 | Valve leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921400870.2U CN210426893U (en) | 2019-08-26 | 2019-08-26 | Valve leakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210426893U true CN210426893U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921400870.2U Active CN210426893U (en) | 2019-08-26 | 2019-08-26 | Valve leakage detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210426893U (en) |
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2019
- 2019-08-26 CN CN201921400870.2U patent/CN210426893U/en active Active
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