CN206378257U - A valve pressure test device - Google Patents

Abstract

The utility model discloses a valve pressure testing device belongs to valve pressure testing technical field. The device comprises: the device comprises a liquid supply tank (1), a liquid supply pipeline (2) and a return pipeline (3), wherein the liquid supply pipeline (2) is communicated with the liquid supply tank (1); the booster pump (4) is connected with the liquid supply pipeline (2), and the pressure test assembly is connected with the booster pump (4) and used for being connected with a valve; the pressure test assembly comprises a pressure gauge (501) for observing pressure values; the pressure test assembly is connected with the booster pump (4) through a control valve (6); the pressure test assembly is connected with the return pipeline (3) through a return valve (7). The utility model discloses an adopt solitary valve pressure testing device, rather than carry out the pressure testing in the production procedure, do not influence the normal clear of production.

Description

A valve pressure test device

technical field

The utility model relates to the technical field of valve pressure testing, in particular to a valve pressure testing device.

Background technique

Most of the valves used in the oil field are connected by flanges or clamps. The valves will be damaged during use and need to be replaced with new valves or repaired. Among them, the repaired valve needs to be pressure tested at 1.25 times the nameplate pressure and stabilized for 5 minutes to check whether the leak tightness of the repaired valve meets the requirements.

At present, the valve pressure test is usually carried out directly on the production process. First, the valve is installed in the pipeline of the production process, and then the pressure is increased to meet the pressure test requirements. If the valve meets the pressure test requirements, the pressure is reduced to normal production. If the valve does not meet the pressure test requirements, the valve needs to be disassembled, repaired, and then installed in the pipeline of the production process to perform the valve pressure test again.

In the process of realizing the utility model, the designer finds that the prior art has at least the following problems:

The valve pressure test is carried out directly in the production process. The increase in pressure will have a certain impact on production, and it is difficult to control the pressure test pressure, and it is difficult to meet the requirements of the pressure stabilization time. At the same time, the pressure test in the production process requires installation, Dismantling the valve increases the labor intensity of the staff.

Utility model content

In order to solve the above-mentioned problems in the prior art, the embodiment of the utility model provides a valve pressure test device, the technical solution is as follows:

The embodiment of the utility model provides a valve pressure test device, the device includes: a liquid supply tank, a liquid supply pipeline and a return pipeline connected with the liquid supply tank;

a booster pump connected to the liquid supply pipeline, and a pressure test component connected to the booster pump for connection with a valve;

The pressure test assembly includes a pressure gauge for observing the pressure value;

The pressure test assembly is connected to the booster pump through a control valve;

The pressure test assembly is connected with the return pipeline through a return valve.

Specifically, the pressure test assembly further includes: a pressure test tube connected to the control valve, a vent valve and a valve joint connected to the pressure test tube.

Specifically, both the pressure gauge and the return valve are connected to the pressure test tube.

Specifically, the number of the pressure test assembly, the return valve, and the control valve is two.

Specifically, the connection between the two pressure test assemblies, the booster pump and the liquid supply tank forms a parallel connection.

Specifically, the valve joints in the pressure test assembly are a flanged valve joint and a clamped valve joint.

Specifically, the pressure test pipe is connected to the flanged valve joint through a pressure test pipe collar and a different diameter joint.

Preferably, the pressure test tube is a pressure resistant tube.

Specifically, the liquid inlet of the booster pump is connected to the liquid supply tank through the liquid supply line, and the liquid outlet of the booster pump is connected to the pressure test assembly through the control valve.

Preferably, the liquid supply tank is a conical tank.

The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:

The liquid in the liquid supply tank is boosted by the booster pump and then output, and the pressure test component is connected to the valve, and the valve is closed. Since the pressure test component is connected to the booster pump through the control valve, When the control valve is opened, the high-pressure liquid output by the booster pump enters the pressure test assembly, and the high-pressure liquid stays in the pressure test assembly, and its pressure remains at the preset value. Observe whether the pressure value in the pressure test assembly changes, and realize the pressure test of the valve. Moreover, the utility model adopts a separate valve pressure test device instead of carrying out pressure test in the production process, which does not affect the normal progress of production.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural diagram of a valve pressure testing device provided by an embodiment of the present invention.

Among them, the accompanying drawings are indicated as:

1. Liquid supply tank; 2. Liquid supply pipeline; 3. Return pipeline; 4. Booster pump; 6. Control valve; 7. Return valve;

501. Pressure gauge; 502. Pressure test tube; 503. Vent valve; 504. Valve connector; 504a. Flange valve connector; 504b. Clamp valve connector; 505. Pressure test tube collar; ;

detailed description

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

The utility model provides a valve pressure test device, referring to Fig. 1, the device comprises: a liquid supply tank 1, a liquid supply pipeline 2 and a return pipeline 3 connected with the liquid supply tank 1;

A booster pump 4 connected to the liquid supply pipeline 2, and a pressure test assembly connected to the booster pump 4 for connecting with a valve;

The pressure test assembly includes a pressure gauge 501 for observing the pressure value;

The pressure test assembly is connected to the booster pump 4 through a control valve 6;

The pressure test assembly is connected to the return line 3 through a return valve 7 .

In the embodiment of the present invention, the booster pump 4 is used to pressurize the liquid in the liquid supply tank 1 and output it, and the pressure test assembly is connected to the valve that needs to be tested, for example, the 504a or 504b shown in Figure 1 is connected to the valve that needs to be tested. The valve for the pressure test is connected and the valve is closed. Since the pressure test assembly is connected with the booster pump 4 through the control valve 6, when the control valve 6 is opened, the high pressure output by the booster pump 4 When the liquid enters the pressure test assembly, since the valve that needs to be tested is in a closed state, the high-pressure liquid will not flow out through the valve, but stays in the pressure test assembly, and because the pressure test assembly is connected to the return line 3 through the return valve 7 , close the return valve 7, keep the pressure of the high-pressure liquid in the pressure test assembly at the preset value, wait for the time required for the pressure stabilization of the valve pressure test, and observe whether the pressure value in the pressure test assembly changes through the pressure gauge 501, if If the pressure value changes, it means that the valve tightness does not meet the requirements. If the pressure value does not change, it means that the valve tightness meets the requirements. Finally, the return valve 7 is opened to release the pressure in the pressure test assembly, so that it can flow back through the return line 3 to In the liquid supply tank 1, the pressure test of the valve is realized. Moreover, the utility model adopts a separate valve pressure test device to test the pressure of the valve that needs to be tested first. If the sealing performance of the valve meets the requirements, the valve that has passed the pressure test is installed on the pipeline in the production process. If the sealing performance of the valve does not meet the requirements, it cannot be installed in the production process, and the valve needs to be repaired again. Instead of installing the valve directly in the production process for pressure testing, it does not affect the normal production.

Specifically, referring to FIG. 1 , the pressure test assembly further includes: a pressure test tube 502 connected to the control valve 6 , a vent valve 503 and a valve joint 504 connected to the pressure test tube 502 . Moreover, both the pressure gauge 501 and the return valve 7 are connected to the pressure test tube 502 . Since the liquid supply pipeline 2 connected with the liquid supply tank 1 is a high-pressure steel pipe with a small diameter, usually about 15mm, and the valve used in the oil field has a large diameter, usually the diameter of the valve connected by the flange is about 200mm, and the clamp connection The diameter of the type valve is greater than 50mm. Although the valve sizes of various models or manufacturers are inconsistent, its diameter is much larger than that of the liquid supply pipeline 2. If the liquid supply pipeline 2 is directly connected to the valve, there will be safety hazards. Therefore, in A pressure test tube 502 is set in the pressure test assembly. The diameter of the pressure test tube 502 is larger than the diameter of the liquid supply pipeline 2. As a preferred solution, it can be set to 65 mm to ensure the safety of the construction personnel. The output port of the booster pump 4 It is connected to the control valve 6 through a high-pressure pipeline with the same specifications as the liquid supply pipeline 2, and the pressure test tube 502 is connected to the high-pressure pipeline through threads. In addition, the vent valve 503 is used to connect the pressure test tube 502. Before removing the valve after the pressure test, the pressure in the pressure test tube 502 is released through the return valve 7. In order to ensure safety, the pressure test tube is drained through the vent valve 503. The pressure in 502 is completely vented, and finally the valve after the pressure test is removed.

In the above-mentioned embodiment, there are two types of valves commonly used in the oilfield field, flange-connected valves and clamp-connected valves. In order to meet the pressure test requirements of the two different valves, the The number of the pressure test assembly, the return valve 7 and the control valve 6 is two.

Referring to Fig. 1, the connection between the two pressure test assemblies and the booster pump 4 and the liquid supply tank 1 forms a parallel connection mode. When there are two pressure test assemblies, the pressure test tubes in the two pressure test assemblies 502 are all connected to the booster pump 4 through the control valve 6, and the pressure test tubes 502 in the two pressure test assemblies are also connected to the return line 3 through the return valve 7, and the booster pump 4 can be The two pressure test assemblies are pressurized, and the liquid returned when the pressure is released from the two pressure test assemblies can flow back into the liquid supply tank 1 .

As mentioned above, in order to meet the valves with two different connection modes when two pressure test assemblies are provided, the valve joint 504 in the pressure test assembly is a flange type valve joint 504a and a clamp type valve joint 504b. For clamp-connected valves, the pressure test tube 502 in the pressure test assembly can be directly connected to the clamp-type valve joint 504b. When in use, directly connect the clamp-connected valve to the clamp-type valve joint 504b. For flanged valves, the pressure test pipe 502 needs to be connected to the flanged valve joint 504a through a pressure test pipe collar 505 and a different diameter joint 506 to match the flanged valve joint 504a. Then the flanged valve is connected to the flanged valve joint 504a, and then the pressure test operation is performed. Wherein the connection between the pressure test pipe 502, the pressure test pipe collar 505, the reducing joint 506 and the flanged valve joint 504a can be connected by threads, for example, the two ends of the pressure test pipe 502 have external threads, and the pressure test pipe Both ends of the coupling 505 have internal threads, and one end of the pressure test tube 502 can be connected with one end of the pressure test tube coupling 505, and the other parts are connected in the same way.

The specific flow of the utility model for pressure testing the valve is: first open the return valve 7, open the control valve 6, close the vent valve 503, start the booster pump 4, then slowly close the return valve 7, observe the pressure value of the pressure gauge 501 to At the preset test pressure, close the control valve 6, stabilize the pressure for the specified time, and observe whether the pressure value of the pressure gauge 501 changes. If the pressure value changes, it means that the valve sealing performance does not meet the requirements. If the pressure value does not change , indicating that the valve tightness meets the requirements, then slowly open the return valve 7, and when the pressure gauge 501 shows a pressure value of 0, stop the booster pump 4, open the vent valve 503, and finally disassemble the valve.

By adopting the form of two pressure test components, the different valve joints 504 can meet the valves of different connection modes, and the pressure test of two valves can be carried out at the same time through the valve pressure test device provided by the utility model, which can be A clamp-connected valve is connected to the clamp-type valve connector 504b, and then a flange-connected valve is connected to the flange-type valve connector 504a. If the pressure test pressure required by the two valves requiring pressure test When inconsistent, then choose to test the low-pressure valve first. When the low-pressure valve is tested, it is necessary to close the control valve 6 and the return valve 7 of the high-pressure valve connected to the low-pressure valve. Similarly, when the high-pressure valve is tested When it is necessary to close the control valve 6 and the return valve 7 of the high-pressure valve connected to the high-pressure valve, it is necessary to test the low-pressure valve first for safety reasons. Usually, the pressure required for the pressure test of the high-pressure valve is the same as that for the low-pressure valve. It is about 10 times the pressure required for the pressure test. If the pressure test is performed on the high-pressure valve first, the pressure of the entire liquid circulation circuit will be high and difficult to control. Once the control valve 6 connected to the low-pressure valve is opened, the low-pressure valve may not be able to bear the pressure in the liquid circulation circuit, and the low-pressure valve may be damaged.

The pressure test requirement for high-pressure valves can be 25Mpa, so the pressure test tube 502 is required to be a high-pressure tube that will not be damaged during the pressure test.

In addition, as shown in FIG. 1 , the liquid inlet of the booster pump 4 is connected to the liquid supply tank 1 through the liquid supply line 2 , and the liquid outlet of the booster pump 4 is connected to the liquid supply tank 1 through the control valve 6 . The above pressure test assembly connection. Preferably, the liquid supply tank 1 is a conical tank.

All the above optional technical solutions may be combined in any way to form optional embodiments of the present disclosure, which will not be repeated here.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (9)

1. A valve pressure test device, characterized in that the device comprises: a liquid supply tank (1), a liquid supply line (2) and a return line (3) communicated with the liquid supply tank (1); A booster pump (4) connected to the liquid supply pipeline (2), and a pressure test assembly connected to the booster pump (4) for connection with a valve; The pressure test assembly includes a pressure gauge (501) for observing the pressure value; The pressure test assembly is connected with the booster pump (4) through a control valve (6); The pressure test assembly is connected with the return line (3) through a return valve (7). 2. The device according to claim 1, characterized in that the pressure test assembly further comprises: a pressure test tube (502) connected to the control valve (6), a pressure test tube (502) connected to the pressure test tube (502) vent valve (503) and valve connector (504) of the 3. The device according to claim 2, characterized in that, both the pressure gauge (501) and the return valve (7) are connected to the pressure test tube (502). 4. The device according to claim 3, characterized in that, the number of the pressure test assembly, the return valve (7) and the control valve (6) is two. 5. The device according to claim 4, characterized in that the connections between the two pressure test assemblies, the booster pump (4) and the liquid supply tank (1) form a parallel connection. 6. The device according to claim 5, characterized in that, the valve joint (504) in the pressure test assembly is a flange type valve joint (504a) and a clamp type valve joint (504b). 7. The device according to claim 6, characterized in that, the pressure test pipe (502) is connected to the flanged valve joint (504a) through a pressure test pipe collar (505) and a different diameter joint (506) connect. 8. The device according to claim 7, characterized in that the pressure test tube (502) is a pressure-resistant tube. 9. The device according to claim 1, characterized in that the liquid inlet of the booster pump (4) is connected to the liquid supply tank (1) through the liquid supply line (2), and the booster pump The liquid outlet of (4) is connected with the pressure test assembly through the control valve (6).