Supercritical carbon dioxide medium valve test system

Abstract

The invention relates to a supercritical carbon dioxide medium valve test system, and aims to solve the problem that a supercritical carbon dioxide medium valve test system is lacked to complete various valve tests meeting requirements. According to the scheme, a compressed carbon dioxide gas cylinder, a gas cylinder stop valve, a filter, a compressor, a supercritical carbon dioxide storage tank, a flow meter, a regulating valve, a valve test container, a test valve gas inlet stop valve and a test valve are connected in sequence; a heating wire is uniformly wound on the supercritical carbon dioxide storage tank, the supercritical carbon dioxide storage tank is heated by an electric heater connected with the heating wire, the electric heater is controlled by a PLC (Programmable Logic Controller) control box connected with the electric heater, and a supercritical carbon dioxide storage tank temperature transmitter and a supercritical carbon dioxide storage tank pressure transmitter are connected onto the carbon dioxide storage tank; the valve test container is provided with a test container safety valve, the test station emptying bypass electric valve is located between the test valve air inlet cut-off valve and the test valve, and various supercritical carbon dioxide medium valve tests can be effectively achieved.

Description

Technical Field

[0001] This invention relates to the field of valve testing system technology, specifically a supercritical carbon dioxide medium valve testing system. Background Technology

[0002] Valves are pipeline devices used in fluid systems to open and close pipelines, control the flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the transported medium. They play an important role in various industries and applications.

[0003] Supercritical carbon dioxide cycle power generation technology has attracted increasing attention in recent years due to its high efficiency and environmental friendliness. Among these technologies, valves are key components in this cycle system, and their performance is crucial to the overall performance, reliability, and efficiency of the power generation system.

[0004] In industrial production, valves are key components for controlling fluid flow, and their performance and reliability are crucial to the safe operation of the entire system. Therefore, valve testing is particularly important, as it not only relates to product quality but also directly impacts production efficiency and safety. To ensure that valves can meet various demanding operating conditions, they must undergo rigorous testing. These tests typically include pressure testing, leakage testing, and operational performance testing.

[0005] Currently, there is a lack of a supercritical carbon dioxide medium valve testing system that can meet the testing requirements of the valves under test, and can adjust the test medium parameters (temperature, pressure, flow rate) according to the specific requirements of different test valves, so as to complete various valve tests that meet the requirements. Summary of the Invention

[0006] The purpose of this invention is to address the lack of a supercritical carbon dioxide medium valve testing system that can meet the testing requirements of the valves under test and adjust the test medium parameters (temperature, pressure, flow rate) according to the specific requirements of different test valves, thereby completing various valve tests that meet the requirements. This invention proposes a supercritical carbon dioxide medium valve testing system.

[0007] The objective of this invention is achieved as follows: a supercritical carbon dioxide medium valve testing system, comprising a compressed carbon dioxide cylinder, a cylinder shut-off valve, a filter, a compressor, a supercritical carbon dioxide storage tank, an electric heating device, a PLC control cabinet, a supercritical carbon dioxide storage tank temperature transmitter, a supercritical carbon dioxide storage tank pressure transmitter, a flow meter, a regulating valve, a valve testing container, a testing container safety valve, a testing valve inlet shut-off valve, a testing station venting bypass electric valve, and a testing valve;

[0008] Compressed carbon dioxide cylinders, cylinder shut-off valves, filters, compressors, supercritical carbon dioxide storage tanks, flow meters, regulating valves, valve test containers, test valve inlet shut-off valves, and test valves are connected in sequence.

[0009] Compressed carbon dioxide cylinders are used to store carbon dioxide gas for experimental purposes.

[0010] A heating wire is evenly wound around the supercritical carbon dioxide storage tank and heated by an electric heater connected to the heating wire. The electric heater is controlled by a PLC control box connected to it. A supercritical carbon dioxide storage tank temperature transmitter and a supercritical carbon dioxide storage tank pressure transmitter are connected to the carbon dioxide storage tank.

[0011] The valve test container is used to store supercritical carbon dioxide medium. It is equipped with a test station for installing the test container safety valve, which is used to protect the valve test container.

[0012] The test station's venting bypass electric valve is located between the test valve's inlet shut-off valve and the test valve.

[0013] Furthermore, there are multiple compressed carbon dioxide cylinders.

[0014] Furthermore, a pressure shut-off valve is installed between the compressor and the supercritical carbon dioxide storage tank.

[0015] Furthermore, a vacuum pump is installed between the compressor and the supercritical carbon dioxide storage tank.

[0016] Furthermore, a supercritical carbon dioxide storage tank gas supply shut-off valve is installed between the supercritical carbon dioxide storage tank and the flow meter.

[0017] Furthermore, a gas supply line temperature transmitter and a steam supply line pressure transmitter are installed between the shut-off valve and the flow meter.

[0018] Furthermore, an air inlet shut-off valve for the test station is installed between the regulating valve and the valve test container.

[0019] Furthermore, a drain valve is provided at the bottom of the valve test container.

[0020] Furthermore, the valve test vessel is equipped with a test vessel temperature transmitter and a test vessel pressure transmitter.

[0021] Furthermore, a test gas pressure transmitter and a test gas temperature transmitter are installed between the test valve inlet shut-off valve and the test valve.

[0022] Beneficial effects:

[0023] 1. A novel supercritical carbon dioxide medium valve testing system is provided, which can effectively realize various supercritical carbon dioxide medium valve tests;

[0024] 2. It adopts an electric heating type, which heats up quickly and has precise temperature control;

[0025] 3. PLC control is adopted. Through preset test programs, various supercritical carbon dioxide valve tests can be automatically realized. The test operation is stable and reliable. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a supercritical carbon dioxide medium valve testing system according to the present invention. Detailed Implementation

[0027] Specific Implementation Method 1: A supercritical carbon dioxide medium valve testing system, comprising a compressed carbon dioxide cylinder 1, a cylinder shut-off valve 2, a filter 3, a compressor 4, a supercritical carbon dioxide storage tank 7, an electric heating device 8, a PLC control cabinet 9, a supercritical carbon dioxide storage tank temperature transmitter 10, a supercritical carbon dioxide storage tank pressure transmitter 11, a flow meter 15, a regulating valve 16, a valve test container 18, a test container safety valve 20, a test valve inlet shut-off valve 23, a test station venting bypass electric valve 26, and a test valve 27;

[0028] Compressed carbon dioxide cylinder 1, cylinder shut-off valve 2, filter 3, compressor 4, supercritical carbon dioxide storage tank 7, flow meter 15, regulating valve 16, valve test container 18, test valve inlet shut-off valve 23 and test valve 27 are connected in sequence.

[0029] Compressed carbon dioxide cylinder 1 is used to store carbon dioxide gas for testing purposes;

[0030] A heating wire is uniformly wound around the supercritical carbon dioxide storage tank 7 and heated by an electric heater 8 connected to the heating wire. The electric heater 8 is controlled by a PLC control box 9 connected to it. A supercritical carbon dioxide storage tank temperature transmitter 10 and a supercritical carbon dioxide storage tank pressure transmitter 11 are connected to the carbon dioxide storage tank 7.

[0031] The valve test container 18 is used to store supercritical carbon dioxide medium. It is equipped with a test station for installing the test container safety valve 20. The test container safety valve 20 is used to protect the valve test container 18.

[0032] The test station venting bypass electric valve 26 is located between the test valve inlet shut-off valve 23 and the test valve 27.

[0033] In this embodiment: Compressed carbon dioxide cylinders are used to store carbon dioxide gas for testing. Multiple sets of compressed carbon dioxide cylinders can be selected according to the testing requirements of different valves. A cylinder shut-off valve is used to control or cut off the gas supply. A filter is used to filter the carbon dioxide gas to prevent particulate matter from entering subsequent pipelines. The filtered gas is pressurized by a compressor and then enters a supercritical carbon dioxide storage tank. Inside the supercritical carbon dioxide storage tank, it is pressurized to a supercritical state. A heating wire is evenly wound around the supercritical carbon dioxide storage tank and heated by an electric heater. The electric heater is controlled by a PLC control box to ensure that the gas inside is heated to the required test temperature. The supercritical carbon dioxide storage tank temperature transmitter and the supercritical carbon dioxide... The storage tank pressure transmitter is used to continuously measure the temperature and pressure of the supercritical carbon dioxide storage tank and feed it back to the PLC control box for controlling the state of the supercritical carbon dioxide. The flow meter is used to measure the flow rate of the supercritical carbon dioxide medium during the test. The regulating valve is used to adjust the flow rate of the supercritical carbon dioxide medium. The valve test container is used to store the supercritical carbon dioxide medium and has a test station for installing the test safety valve. The test container safety valve protects the test container from overpressure. The test valve inlet shut-off valve controls the entry of the supercritical carbon dioxide medium into or isolates the test valve. The test station venting bypass electric valve automatically opens before the test station safety valve trips to prevent overpressure at the test station. The vacuum pump is used to evacuate the test system to a vacuum before the test, eliminating the influence of air and other gases on the test. The test valve inlet shut-off valve cuts off the test medium, ensuring that the test medium does not enter the pipeline after the shut-off valve when replacing the test valve. The test station venting bypass electric valve releases the gas before the test valve, facilitating valve replacement and retesting.

[0034] Specific implementation method 2: A supercritical carbon dioxide medium valve test system, wherein there are multiple compressed carbon dioxide cylinders 1.

[0035] Other implementation methods are the same as those in Specific Implementation Method 1.

[0036] Specific implementation method three: A supercritical carbon dioxide medium valve test system, wherein a pressure shut-off valve 5 is provided between the compressor 4 and the supercritical carbon dioxide storage tank 7.

[0037] Other implementation methods are the same as those in Specific Implementation Method 1.

[0038] Specific implementation method four: A supercritical carbon dioxide medium valve test system, wherein a vacuum pump 6 is provided between the compressor 4 and the supercritical carbon dioxide storage tank 7.

[0039] Other implementation methods are the same as those in Specific Implementation Method 1.

[0040] Specific implementation method five: A supercritical carbon dioxide medium valve test system, wherein a supercritical carbon dioxide storage tank gas supply shut-off valve 12 is provided between the supercritical carbon dioxide storage tank 7 and the flow meter 15.

[0041] Other implementation methods are the same as those in Specific Implementation Method 1.

[0042] Specific implementation method six: A supercritical carbon dioxide medium valve test system, wherein a gas supply pipeline temperature transmitter 13 and a steam supply pipeline pressure transmitter 14 are provided between the shut-off valve 12 and the flow meter 15.

[0043] Other implementation methods are the same as those in Specific Implementation Method 5.

[0044] Specific implementation method seven: A supercritical carbon dioxide medium valve test system, wherein a test station air inlet shut-off valve 17 is provided between the regulating valve 16 and the valve test container 18.

[0045] Other implementation methods are the same as those in Specific Implementation Method 1.

[0046] Specific implementation method eight: A supercritical carbon dioxide medium valve test system, wherein a drain valve 19 is provided at the bottom of the valve test container 18.

[0047] Other implementation methods are the same as those in Specific Implementation Method 1.

[0048] Specific implementation method nine: A supercritical carbon dioxide medium valve test system, wherein the valve test container 18 is equipped with a test container temperature transmitter 21 and a test container pressure transmitter 22.

[0049] Other implementation methods are the same as those in Specific Implementation Method 1.

[0050] Specific Implementation Method 10: A supercritical carbon dioxide medium valve test system, wherein a test gas pressure transmitter 24 and a test gas temperature transmitter 25 are provided between the test valve inlet shut-off valve 23 and the test valve 27.

[0051] Other implementation methods are the same as those in Specific Implementation Method 1.

[0052] Work process:

[0053] 1. Install the test valve on the test station and check whether all equipment in the test system is in good condition.

[0054] 2. Use a vacuum pump to evacuate the system into a vacuum.

[0055] 3. Open the gas cylinder shut-off valve and use the compressor to send the carbon dioxide gas in the gas cylinder into the supercritical carbon dioxide storage tank and pressurize it to the supercritical state.

[0056] 4. Turn on the electric heater and slowly heat the supercritical carbon dioxide medium stored in the supercritical carbon dioxide storage tank to the temperature required for the test.

[0057] 5. Close the electric valve before the test valve, open the gas supply shut-off valve of the supercritical carbon dioxide storage tank, and at the same time adjust the opening of the regulating valve to ensure that the gas pressure in the pipeline and the test container is maintained at the set pressure.

[0058] 6. Before opening the test valve, open the electric ball valve to conduct the valve test and record the gas pressure, temperature and flow rate through the test valve.

[0059] 7. After the valve test is completed, close the ball valve in front of the test valve and conduct a valve sealing test or conduct the next valve test.

Claims

1. A valve testing system for supercritical carbon dioxide medium, characterized in that: It includes a compressed carbon dioxide cylinder (1), a cylinder shut-off valve (2), a filter (3), a compressor (4), a supercritical carbon dioxide storage tank (7), an electric heating device (8), a PLC control cabinet (9), a supercritical carbon dioxide storage tank temperature transmitter (10), a supercritical carbon dioxide storage tank pressure transmitter (11), a flow meter (15), a regulating valve (16), a valve test container (18), a test container safety valve (20), a test valve inlet shut-off valve (23), a test station venting bypass electric valve (26), and a test valve (27). Compressed carbon dioxide cylinder (1), cylinder shut-off valve (2), filter (3), compressor (4), supercritical carbon dioxide storage tank (7), flow meter (15), regulating valve (16), valve test container (18), test valve inlet shut-off valve (23) and test valve (27) are connected in sequence; A compressed carbon dioxide cylinder (1) is used to store carbon dioxide gas for testing; A heating wire is evenly wound around the supercritical carbon dioxide storage tank (7) and heated by an electric heater (8) connected to the heating wire. The electric heater (8) is controlled by a PLC control box (9) connected to it. A supercritical carbon dioxide storage tank temperature transmitter (10) and a supercritical carbon dioxide storage tank pressure transmitter (11) are connected to the carbon dioxide storage tank (7). The valve test container (18) is used to store supercritical carbon dioxide medium. It is equipped with a test station for installing the test container safety valve (20). The test container safety valve (20) is used to protect the valve test container (18). The test station venting bypass electric valve (26) is located between the test valve inlet shut-off valve (23) and the test valve (27).

2. The supercritical carbon dioxide medium valve testing system according to claim 1, characterized in that: There are multiple compressed carbon dioxide cylinders (1).

3. The supercritical carbon dioxide medium valve testing system according to claim 1, characterized in that: A pressure shut-off valve (5) is provided between the compressor (4) and the supercritical carbon dioxide storage tank (7).

4. The supercritical carbon dioxide medium valve testing system according to claim 1, characterized in that: A vacuum pump (6) is provided between the compressor (4) and the supercritical carbon dioxide storage tank (7).

5. The supercritical carbon dioxide medium valve testing system according to claim 1, characterized in that: A supercritical carbon dioxide storage tank gas supply shut-off valve (12) is provided between the supercritical carbon dioxide storage tank (7) and the flow meter (15).

6. The supercritical carbon dioxide medium valve testing system according to claim 5, characterized in that: A gas supply line temperature transmitter (13) and a steam supply line pressure transmitter (14) are provided between the shut-off valve (12) and the flow meter (15).

7. The supercritical carbon dioxide medium valve testing system according to claim 1, characterized in that: An air inlet shut-off valve (17) is provided between the regulating valve (16) and the valve test container (18).

8. The supercritical carbon dioxide medium valve testing system according to claim 1, characterized in that: A drain valve (19) is provided at the bottom of the valve test container (18).

9. The supercritical carbon dioxide medium valve testing system according to claim 1, characterized in that: The valve test vessel (18) is equipped with a test vessel temperature transmitter (21) and a test vessel pressure transmitter (22).

10. A supercritical carbon dioxide medium valve testing system according to claim 1, characterized in that: A test gas pressure transmitter (24) and a test gas temperature transmitter (25) are provided between the test valve inlet shut-off valve (23) and the test valve (27).

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