Hydrostatic test system for valve test

Abstract

The utility model discloses a hydraulic test system for valve test, which comprises an air source system, a first tee joint, a pressurization system, a pipeline circulating pump, a water tank assembly, a safety valve, a second tee joint, a third tee joint, a water return valve, a test valve, a tool assembly, a water outlet valve, a pressure gauge, a heating system and an electric cabinet. The air source system is connected with the pressurization system and provides air source power; the pipeline circulating pump, the first tee joint, the heating system, the pressure gauge, the water outlet valve, the test valve and tool assembly, the water return valve, the third tee joint and the second tee joint are sequentially connected to form a loop, and the loop is used for circularly heating a test medium in the test process and keeping the temperature of the medium entering the valve stable; a water outlet of the pressurization system is connected with the first tee joint to provide a water source and pressure for the system; an inlet of the safety valve is connected with the second tee joint, and an outlet is connected with the water tank assembly to guarantee safety of the system.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve testing, and particularly relates to a hydrostatic test system for valve testing. This system can heat the test medium and control the temperature while pressurizing the valve. Background Technique

[0002] Valves are control components in pipeline transportation systems and are widely used, including in chemical engineering, petroleum, natural gas, fire protection, water treatment, environmental protection, electric power, etc. From the simplest globe valve to various valves used in extremely complex automatic control systems, their varieties and specifications are quite numerous. Valve testing mainly includes strength tests, sealing tests, and packing tightening torque tests. These tests all require pressurizing the test medium. At the same time, during the use of valves, the medium temperature will have a certain impact on the packing and various valve components. To ensure that the test results conform to the actual on-site use conditions, the medium pressure and medium temperature of the test should be approximately the same as the on-site working conditions.

[0003] Currently, when a valve hydrostatic test system pressurizes a valve, the medium in the pressurizing pipeline and the valve cannot circulate. Even if the temperature of the medium is adjusted in advance, the temperature will change due to natural convection heat transfer during the pressure holding process, and it is impossible to simulate the stable temperature state of the medium during the use of the valve, resulting in inaccurate test results. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hydrostatic test system for valve testing, which can circulate and heat the medium and control the medium temperature during the hydrostatic test of the valve, keep the medium temperature stable, and ensure the accuracy of the test results.

[0005] The technical solution of the utility model is as follows:

[0006] Design a hydrostatic test system for valve testing, including an air source system, a first three-way joint, a pressurization system, a pipeline circulation pump, a water tank assembly, a safety valve, a second three-way joint, a third three-way joint, a return water valve, a test valve and a tooling assembly, a water outlet valve, a pressure gauge, a heating system, and an electric control box. It is characterized in that the air source system is connected to the pressurization system to provide air source power; the pipeline circulation pump, the first three-way joint, the heating system, the pressure gauge, the water outlet valve, the test valve and the tooling assembly, the return water valve, the third three-way joint, and the second three-way joint are connected in sequence to form a loop, and this loop is used to circulate and heat the test medium during the test process and keep the temperature of the medium entering the valve stable; the water outlet of the pressurization system is connected to the first three-way joint to provide water source and pressure for the system; the inlet of the safety valve is connected to the second three-way joint, and the outlet is connected to the water tank assembly to ensure the safety of the system.

[0007] Preferably, the test valve and tooling assembly includes a test valve and tooling, an exhaust valve, and a temperature sensor; the exhaust valve is installed at the highest position of the test valve and tooling to facilitate exhausting the gas inside the valve as much as possible, ensuring the safety and accuracy of the test process; the temperature sensor is installed on the test valve and tooling to monitor the medium temperature in the valve cavity.

[0008] Preferably, the heating system includes a pipeline heater, a temperature detection element, and a temperature controller; the power supply wire of the pipeline heater is connected to the electric control box; the temperature detection element is installed near the water outlet position of the pipeline heater, and its signal is transmitted to the temperature controller, which is connected to the electric control box. The temperature controller controls the pipeline heater according to the detected temperature parameter of the water outlet to keep the water outlet temperature at the required value.

[0009] Preferably, the gas source system includes an external gas source inlet, a gas source switch valve, and a three-piece unit, which are connected in sequence; one end of the three-piece unit far from the external gas source inlet is connected to the pressurization system.

[0010] Preferably, the pressurization system includes an oil mist lubricator and a gas-liquid booster pump; both ends of the oil mist lubricator are respectively connected to the three-piece unit and the gas source inlet of the gas-liquid booster pump. When the input gas source passes through the oil mist lubricator, the lubricating medium inside it is transported into the gas-liquid booster pump along with the gas; the water inlet of the gas-liquid booster pump is connected to the water tank assembly, and the water outlet is connected to the first three-way joint. The gas-liquid booster pump transports the medium in the water tank into the circuit to complete the work of water injection, air exhaust, and pressurization.

[0011] Preferably, the water tank assembly includes a liquid level gauge, a water tank, a water source inlet valve, a relief valve, and a drain valve; the water source outlet of the water tank is connected to the water inlet of the gas-liquid booster pump; one end of the relief valve is connected to the water tank, and the other end is connected to the third three-way joint. After the test is completed, the system pressure is released by opening the relief valve, and the test medium flows back into the water tank again.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The hydrostatic test system and the test valve form a closed loop, and the test medium circulates in the loop. During the circulation process, the medium is heated and temperature-controlled by the heating system to ensure the stability of the medium temperature at the test valve inlet, thereby guaranteeing the accuracy of the valve test results.

[0014] 2. The pressurization system provides water source for the entire loop. On the one hand, it is used to exhaust the air inside the pipeline and the test valve, and on the other hand, it pressurizes the loop after the air exhaust is completed. The pressurization pressure is related to the input driving gas source pressure and can be adjusted steplessly. Description of the Drawings

[0015] Figure 1This is a schematic diagram of a water pressure test system for valve testing provided by the present utility model.

[0016] In the figure: 1, air source system; 2, first three-way joint; 3, pressurization system; 4, pipeline circulation pump; 5, water tank assembly; 6, safety valve; 7, second three-way joint; 8, third three-way joint; 9, return water valve; 11, external air source inlet; 12, air source switch valve; 13, triple unit; 20, test valve and tooling assembly; 30, water outlet valve; 31, oil mistor; 32, air-liquid booster pump; 50, heating system; 51, liquid level gauge; 52, water tank; 53, water source inlet valve; 54, unloading valve; 55, drain valve; 60, electric control box; 201, test valve and tooling; 202, temperature sensor; 203, exhaust valve; 501, pipeline heater; 502, temperature detection element; 503, temperature controller. Specific embodiments

[0017] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] As Figure 1 shown, a water pressure test system for valve testing provided by the present utility model includes an air source system 1, a first three-way joint 2, a pressurization system 3, a pipeline circulation pump 4, a water tank assembly 5, a safety valve 6, a second three-way joint 7, a third three-way joint 8, a return water valve 9, a test valve and tooling assembly 20, a water outlet valve 30, a pressure gauge 40, a heating system 50, and an electric control box 60. It is characterized in that the air source system 1 is connected to the pressurization system 3 to provide air source power; the pipeline circulation pump 4, the first three-way joint 2, the heating system 50, the pressure gauge 40, the water outlet valve 30, the test valve and tooling assembly 20, the return water valve 9, the third three-way joint 8, and the second three-way joint 7 are connected in sequence to form a loop; the water outlet of the pressurization system 3 is connected to the first three-way joint 2 to provide water source and pressure for the system; the inlet of the safety valve 6 is connected to the second three-way joint 7, and the outlet is connected to the water tank assembly 5.

[0019] Furthermore, the test valve and tooling assembly 20 includes a test valve and tooling 201, an exhaust valve 203, and a temperature sensor 202; the exhaust valve 203 is installed at the highest position of the test valve and tooling 201 to facilitate exhausting the gas inside the valve as much as possible; the temperature sensor 202 is installed on the test valve and tooling 201 to monitor the medium temperature in the valve cavity.

[0020] Furthermore, the heating system 50 includes a pipeline heater 501, a temperature detection element 502, and a temperature controller 503; the power cord of the pipeline heater 501 is connected to the electric control box 60; the temperature detection element 502 is installed near the water outlet of the pipeline heater 501, and its signal is transmitted to the temperature controller 503, and the temperature controller 503 is connected to the electric control box 60.

[0021] Furthermore, the air source system 1 includes an external air source inlet 11, an air source switch valve 12, and a three-piece unit 13, which are connected in sequence; one end of the three-piece unit 13 away from the external air source inlet 11 is connected to the pressurization system 3.

[0022] Furthermore, the pressurization system 3 includes an oil mist separator 31 and a gas-liquid booster pump 32; both ends of the oil mist separator 31 are respectively connected to the three-piece unit 13 and the air source inlet of the gas-liquid booster pump 32, and are used to provide a driving air source for the gas-liquid booster pump 32; the water inlet of the gas-liquid booster pump 32 is connected to the water tank assembly 5, and the water outlet is connected to the first three-way joint 2.

[0023] Furthermore, the water tank assembly 5 includes a liquid level gauge 51, a water tank 52, a water source inlet valve 53, a relief valve 54, and a drain valve 55; the water source outlet of the water tank 52 is connected to the water inlet of the gas-liquid booster pump 32; one end of the relief valve 54 is connected to the water tank 52, and the other end is connected to the third three-way joint 8.

[0024] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A hydraulic test system for valve testing, comprising an air source system (1), a first tee (2), a pressure boosting system (3), a pipeline circulation pump (4), a water tank assembly (5), a safety valve (6), a second tee (7), a third tee (8), a return valve (9), a test valve and tooling assembly (20), a water outlet valve (30), a pressure gauge (40), a heating system (50), and an electric control box (60), characterized in that: The air source system (1) is connected to the boosting system (3) to provide air source power; the pipeline circulation pump (4), the first tee (2), the heating system (50), the pressure gauge (40), the water outlet valve (30), the test valve and tooling assembly (20), the return valve (9), the third tee (8), and the second tee (7) are connected in sequence to form a loop; the water outlet of the boosting system (3) is connected to the first tee (2) to provide water source and pressure for the system; the inlet of the safety valve (6) is connected to the second tee (7), and the outlet is connected to the water tank assembly (5).

2. A hydraulic test system for valve testing as claimed in claim 1, characterized in that: The test valve and tooling assembly (20) comprises a test valve and tooling (201), an exhaust valve (203), and a temperature sensor (202); the exhaust valve (203) is installed at the highest position of the test valve and tooling (201) to facilitate exhausting the gas inside the valve as much as possible; the temperature sensor (202) is installed on the test valve and tooling (201) to monitor the medium temperature of the valve cavity.

3. A hydraulic test system for valve testing as claimed in claim 1, characterized in that: The heating system (50) comprises a pipe heater (501), a temperature detection element (502), and a temperature controller (503); the power line of the pipe heater (501) is connected to an electric control box (60); the temperature detection element (502) is installed near the water outlet of the pipe heater (501), and its signal is transmitted to the temperature controller (503), and the temperature controller (503) is connected to the electric control box (60).

4. A hydraulic test system for valve testing as claimed in claim 1, characterized in that: The gas source system (1) comprises an external gas source inlet (11), a gas source switch valve (12), and a triplet (13) which are connected in sequence; the end of the triplet (13) away from the external gas source inlet (11) is connected to the boosting system (3).

5. A hydraulic test system for valve testing as claimed in claim 1, characterized in that: The boosting system (3) comprises an oil mist collector (31) and an air-liquid boosting pump (32); the two ends of the oil mist collector (31) are respectively connected to the triplet (13) and the air source inlet of the air-liquid boosting pump (32), so as to provide a driving air source to the air-liquid boosting pump (32); the water inlet of the air-liquid boosting pump (32) is connected to the water tank assembly (5), and the water outlet is connected to the first tee (2).

6. A hydraulic test system for valve testing as claimed in claim 1, characterized in that: The water tank assembly (5) comprises a liquid level meter (51), a water tank (52), a water source inlet valve (53), a discharge valve (54), and a drain valve (55); the water source outlet of the water tank (52) is connected to the water inlet of the gas-liquid booster pump (32); one end of the discharge valve (54) is connected to the water tank (52), and the other end is connected to the third three-way valve (8).

Images