Safety valve two-phase flow performance and displacement testing device

Abstract

The invention relates to a safety valve two-phase flow performance and displacement test device, which comprises a gas supply unit, a liquid supply unit, a test unit and a measurement component, and is characterized in that the gas supply unit comprises a first tank body, a first pipeline, a first detection assembly and a first valve assembly, and the liquid supply unit comprises a second tank body, a second pipeline, a second detection assembly and a second valve assembly; the test unit comprises a third tank body and a third detection assembly, the interior of the third tank body is divided into a first chamber and a second chamber, the first chamber is communicated with the first pipeline, the second chamber is communicated with the second pipeline, and the third tank body is provided with a connecting port and is communicated with the first chamber and the second chamber at the same time; the measuring part is used for measuring and transmitting the opening height of the to-be-measured safety valve. According to the invention, the proportion of each medium in the two-phase flow during the test can be controlled so as to realize the action performance test and displacement test of the two-phase flow medium of the safety valve, and the device is simple in overall structure and high in test and control precision.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a test device for a safety valve, in particular to a two-phase flow action performance and displacement test device for a safety valve. Background Art

[0002] The operating performance of a safety valve refers to the behavior and characteristics of the safety valve opening and closing under specific conditions. When the system pressure reaches the set value, the safety valve will automatically open and release the pressure. When the pressure drops to the specified range, the safety valve will automatically close. This process needs to meet certain standards and requirements to ensure the reliability and safety of the safety valve. The operating performance of the safety valve mainly includes the following aspects:

[0003] Opening pressure: At what pressure does the safety valve start to open and release pressure.

[0004] Seat return pressure: the pressure at which the safety valve closes.

[0005] Sealing performance: The sealing effect after the safety valve is closed ensures that there is no leakage.

[0006] Action stability: the consistency and reliability of the safety valve during multiple opening and closing processes.

[0007] Displacement: The maximum flow rate that a safety valve can discharge during one opening process.

[0008] These performance indicators need to be verified through special tests to ensure that the safety valve can work reliably in actual use.

[0009] At present, according to the requirements of relevant standards, the action performance test and displacement test of the safety valve need to be tested on the performance test device using the same type of medium as the actual working condition. Since the working medium of the safety valve is a single-phase flow medium in most cases, the performance test device can only use the same type of medium for testing. However, when there is a two-phase flow medium in the actual working condition of the safety valve, the use of single-phase flow medium for action performance test and displacement test cannot reflect the action performance and displacement of the valve under actual working conditions, and cannot meet the requirements. Summary of the invention

[0010] The purpose of the invention is to provide a safety valve two-phase flow action performance and displacement test device.

[0011] In order to achieve the above object, the technical solution adopted by the present invention is:

[0012] A safety valve two-phase flow performance and displacement test device, comprising:

[0013] Gas supply unit: comprising a first tank, a first pipeline, a first detection assembly and a first valve assembly, wherein the first tank is used to store gas, one end of the first pipeline is connected to the first tank, the first detection assembly is connected to the first pipeline and is used to detect the parameters of the medium in the first pipeline, and the first valve assembly is connected to the first pipeline and is used to control the on / off and / or flow of the first pipeline;

[0014] Liquid supply unit: comprising a second tank body, a second pipeline, a second detection assembly and a second valve assembly, wherein the second tank body is used to store liquid, one end of the second pipeline is connected to the second tank body, the second detection assembly is connected to the second pipeline and is used to detect the parameters of the medium in the second pipeline, and the second valve assembly is connected to the second pipeline and is used to control the on-off and / or flow rate of the second pipeline;

[0015] The test unit comprises a third tank body and a third detection assembly. The interior of the third tank body is divided into a first chamber and a second chamber. The first chamber is connected to the other end of the first pipeline, and the second chamber is connected to the other end of the second pipeline. The third tank body has a connecting port, which is connected to the first chamber and the second chamber at the same time and is used to connect the safety valve to be tested. The third detection assembly is connected to the connecting port of the third tank body and is used to detect the parameters of the medium at the connecting port.

[0016] Measuring component: used to measure and transmit the opening height of the safety valve to be tested.

[0017] Preferably, the above technical solution is such that the device further comprises an air source unit, and the air supply unit and the liquid supply unit are simultaneously connected to the air source unit and share the air source unit. The medium pressure in the first tank body and the second tank body is provided by the same air source unit, thereby ensuring the consistency of the pressure of the two test media delivered into the third tank body.

[0018] Further preferably, the air source unit includes an air compressor, a fourth tank body, a third pipeline and a third valve assembly, the air compressor is connected to the fourth tank body, the fourth tank body is used to store compressed air, one end of the third pipeline is connected to the fourth tank body, and the other end is connected to the first tank body and the second tank body, and the third valve assembly is arranged on the third pipeline for controlling the on-off and / or flow rate of the third pipeline.

[0019] More preferably, the third valve assembly includes a switch valve and a regulating valve, the switch valve is used to control the on-off of the third pipeline, and the regulating valve is used to adjust the flow of the medium in the third pipeline.

[0020] Preferably, in the above technical solution, the first valve assembly and the second valve assembly both include a switch valve and a regulating valve, the switch valve is used to control the on-off of the first pipeline and the second pipeline, and the regulating valve is used to adjust the flow of the medium in the first pipeline and the second pipeline.

[0021] Preferably, the above technical solution is that the switch valve is arranged on the first pipeline upstream and downstream of the first detection component, and the regulating valve is arranged on the first pipeline downstream of the first detection component;

[0022] The switch valves are arranged on the second pipelines upstream and downstream of the second detection component, and the regulating valve is arranged on the second pipeline downstream of the second detection component.

[0023] Preferably, in the above technical solution, the first detection component and the second detection component both include a temperature sensor, a pressure sensor, and a flow component; and the third detection component includes a temperature sensor and a pressure sensor.

[0024] Further preferably, the temperature sensor is arranged on the first pipeline and the second pipeline upstream and downstream of the flow component, and the pressure sensor is arranged on the first pipeline and the second pipeline upstream of the flow component.

[0025] Further preferably, the temperature sensor and the pressure sensor are respectively provided at the connection ports of the first chamber and the second chamber.

[0026] Preferably, in the above technical solution, the measuring component is a displacement sensor.

[0027] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0028] The present invention divides the third tank body at the inlet of the safety valve into two chambers, gas and liquid, and simultaneously pressurizes the two chambers by conveying gas and water, thereby controlling the proportion of each medium in the two-phase flow during the test, so as to realize the action performance test and displacement test of the two-phase flow medium of the safety valve. The overall structure of the device is simple, and the test and control accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Attached Figure 1 It is a schematic diagram of the structure of the test device of the present invention.

[0030] In the above attached figure:

[0031] 10. First tank; 11. First pipeline;

[0032] 20. second tank; 21. second pipeline;

[0033] 30. third tank body; 300. first chamber; 301. second chamber; 302. connection port;

[0034] 40. air compressor; 41. fourth tank; 42. third pipeline;

[0035] 5. Measuring components;

[0036] 60. On-off valve; 61. Regulating valve;

[0037] 70. Temperature sensor; 71. Pressure sensor; 72. Flow component;

[0038] 8. Safety valve to be tested. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] like Figure 1 The safety valve two-phase flow performance and displacement test device shown includes an air supply unit, a liquid supply unit, a test unit, an air source unit and a measuring component 5. Each unit is described in detail below:

[0042] The gas supply unit includes a first tank body 10, a first pipeline 11, a first detection component and a first valve component. The first tank body 10 is used to store gas and replenish gas to the test unit during the test. One end of the first pipeline 11 is connected to the first tank body 10. The first detection component is connected to the first pipeline 11 to detect the parameters of the gas in the first pipeline 11. The first valve component is connected to the first pipeline 11 to control the on-off and / or flow of the first pipeline 11. Specifically:

[0043] The first valve assembly includes a switch valve 60 and a regulating valve 61. The switch valve 60 is used to control the on-off of the first pipeline 11, and the regulating valve 61 is used to adjust the flow rate of the gas in the first pipeline 11. Specifically: the switch valve 60 is set on the first pipeline 11 upstream and downstream of the first detection assembly, and the regulating valve 61 is set on the first pipeline 11 downstream of the first detection assembly.

[0044] The first detection component includes a temperature sensor 70, a pressure sensor 71, and a flow component 72. Specifically, the temperature sensor 70 is set on the first pipeline 11 upstream and downstream of the flow component 72, and the pressure sensor 71 is set on the first pipeline 11 upstream of the flow component 72. The flow component 72 can be a flow meter or a flow orifice.

[0045] The liquid supply unit includes a second tank body 20, a second pipeline 21, a second detection component and a second valve component. The second tank body 20 is used to store liquid, such as water, to replenish the test unit during the test, one end of the second pipeline 20 is connected to the second tank body 20, the second detection component is connected to the second pipeline 21, and is used to detect the parameters of the liquid in the second pipeline 21, and the second valve component is connected to the second pipeline 21, and is used to control the on-off and / or flow rate of the second pipeline 21. Specifically:

[0046] The second valve assembly includes a switch valve 60 and a regulating valve 61. The switch valve 60 is used to control the on-off of the second pipeline 21, and the regulating valve 61 is used to adjust the flow rate of the liquid in the second pipeline 21. Specifically: the switch valve 60 is set on the second pipeline 21 upstream and downstream of the second detection assembly, and the regulating valve 61 is set on the second pipeline 21 downstream of the second detection assembly.

[0047] The second detection component includes a temperature sensor 70, a pressure sensor 71, and a flow component 72. Specifically, temperature sensors 70 are arranged on the second pipeline 21 upstream and downstream of the flow component 72, and the pressure sensor 71 is arranged on the second pipeline 21 upstream of the flow component 72. The flow component 72 can be a flow meter or a flow orifice.

[0048] In this embodiment, the gas supply unit and the liquid supply unit adopt the same structure to simplify the structure of the entire device.

[0049] The test unit includes a third tank body 30 and a third detection assembly.

[0050] The third tank body 30 provides sufficient medium flow to the safety valve 8 to be tested during the test. The interior of the third tank body 30 is divided into a first chamber 300 and a second chamber 301 by a partition. In the figure, gas is stored in the first chamber and liquid is stored in the second chamber. The first chamber 300 is connected to the other end of the first pipeline 11, and the second chamber 301 is connected to the other end of the second pipeline 21; the third tank body 30 has a connecting port 302, which is connected to the first chamber 301 and the second chamber 302 at the same time, and is used to connect the safety valve 8 to be tested. The third detection component is connected to the connecting port 302 of the third tank body 30, and is used to detect the parameters of the medium at the connecting port 302.

[0051] The third detection component includes a temperature sensor 70 and a pressure sensor 71 . The temperature sensor 70 and the pressure sensor 71 are respectively disposed at the connection ports 302 of the first chamber 300 and the second chamber 301 .

[0052] The air supply unit, the liquid supply unit and the test unit are all provided with a temperature sensor 70 and a pressure sensor 71 to ensure the consistency of pressure and temperature at each position during the test.

[0053] The gas supply unit and the liquid supply unit are connected to the gas source unit at the same time, that is, the two share a gas source unit, and the medium pressure in the first tank body 10 and the second tank body 20 is provided by the same gas source unit, thereby ensuring the consistency of the pressure of the two test media delivered to the third tank body 30. Specifically:

[0054] The air source unit includes an air compressor 40, a fourth tank body 41, a third pipeline 42 and a third valve assembly. The air compressor 40 is connected to the fourth tank body 41 to provide an air source. The fourth tank body 41 is an accumulator for storing compressed air. One end of the third pipeline 42 is connected to the fourth tank body 42, and the other end is connected to the first tank body 10 and the second tank body 20, that is, the third pipeline 42 has two parallel paths. The third valve assembly is arranged on the third pipeline 42 to control the on-off and / or flow rate of the third pipeline 42. Specifically:

[0055] The third valve assembly includes a switch valve 60 and a regulating valve 61 . The switch valve 60 is used to control the on-off of the third pipeline 42 , and the regulating valve 61 is used to adjust the flow of the gas in the third pipeline 42 .

[0056] The measuring component 5 is used to measure and transmit the opening height of the safety valve 8 to be tested. Specifically, the measuring component 5 is a displacement sensor. During measurement, the displacement sensor is arranged directly above the safety valve 8 to be tested.

[0057] When performing the two-phase flow performance test, the valve inlet of the safety valve 8 to be tested is installed at the connection port 302 of the third tank body 30;

[0058] The air compressor 40 is started to provide an air source to the fourth tank 41, and the fourth tank 41 passes the air to the first tank 10 and the second tank 20 through the third pipeline 42. A sufficient amount of water has been added to the lower part of the second tank 20, and the air passed through the fourth tank 41 pressurizes the water in the second tank 20;

[0059] The air in the first tank body 10 passes through the first pipeline 11, sequentially passes through the switch valve 60, the flow component 72, the regulating valve 61, and the switch valve 60 to enter the first chamber 300 in the third tank body 30; the water in the second tank body 20 passes through the second pipeline 21, sequentially passes through the switch valve 60, the flow component 72, the regulating valve 61, and the switch valve 60 to enter the second chamber 301 in the third tank body 30, and at the same time: the temperature sensor 70 and the pressure sensor 71 on the first pipeline 11 and the second pipeline 21 measure and transmit the pressure and temperature in the first pipeline 11 and the second pipeline 21 at this time;

[0060] The first tank body 10 and the second tank body 20 simultaneously transport air and water to the third tank body 30 through the first pipeline 11 and the second pipeline 21. When the medium pressure in the third tank body 30 increases to the opening pressure of the safety valve 8 to be tested, the safety valve 8 to be tested opens, and the safety valve 8 to be tested discharges the two-phase flow medium. At the same time: the temperature sensor 70 and the pressure sensor 71 measure and transmit the pressure and temperature of the air medium and the water medium, and the opening height of the safety valve 8 to be tested is measured by the displacement sensor; the displacement can be measured by the flow component 72.

[0061] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety valve two-phase flow performance and displacement test device, characterized by: include: Gas supply unit: comprising a first tank, a first pipeline, a first detection assembly and a first valve assembly, wherein the first tank is used to store gas, one end of the first pipeline is connected to the first tank, the first detection assembly is connected to the first pipeline and is used to detect the parameters of the medium in the first pipeline, and the first valve assembly is connected to the first pipeline and is used to control the on / off and / or flow of the first pipeline; Liquid supply unit: comprising a second tank body, a second pipeline, a second detection assembly and a second valve assembly, wherein the second tank body is used to store liquid, one end of the second pipeline is connected to the second tank body, the second detection assembly is connected to the second pipeline and is used to detect the parameters of the medium in the second pipeline, and the second valve assembly is connected to the second pipeline and is used to control the on-off and / or flow rate of the second pipeline; The test unit comprises a third tank body and a third detection assembly. The interior of the third tank body is divided into a first chamber and a second chamber. The first chamber is connected to the other end of the first pipeline, and the second chamber is connected to the other end of the second pipeline. The third tank body has a connecting port, which is connected to the first chamber and the second chamber at the same time and is used to connect the safety valve to be tested. The third detection assembly is connected to the connecting port of the third tank body and is used to detect the parameters of the medium at the connecting port. Measuring component: used to measure and transmit the opening height of the safety valve to be tested.

2. The safety valve two-phase flow performance and displacement test device according to claim 1 is characterized in that: The device also includes an air source unit, and the air supply unit and the liquid supply unit are simultaneously connected to the air source unit and share the air source unit.

3. The safety valve two-phase flow performance and displacement test device according to claim 2 is characterized in that: The air source unit includes an air compressor, a fourth tank body, a third pipeline and a third valve assembly. The air compressor is connected to the fourth tank body, and the fourth tank body is used to store compressed air. One end of the third pipeline is connected to the fourth tank body, and the other end is connected to the first tank body and the second tank body. The third valve assembly is arranged on the third pipeline to control the on-off and / or flow rate of the third pipeline.

4. The safety valve two-phase flow performance and displacement test device according to claim 3 is characterized by: The third valve assembly includes a switch valve and a regulating valve. The switch valve is used to control the on-off of the third pipeline, and the regulating valve is used to adjust the flow of the medium in the third pipeline.

5. The safety valve two-phase flow performance and displacement test device according to claim 1 is characterized in that: The first valve assembly and the second valve assembly both include a switch valve and a regulating valve. The switch valve is used to control the on-off of the first pipeline and the second pipeline, and the regulating valve is used to adjust the flow of the medium in the first pipeline and the second pipeline.

6. The safety valve two-phase flow performance and displacement test device according to claim 1 is characterized by: The switch valves are arranged on the first pipelines upstream and downstream of the first detection component, and the regulating valve is arranged on the first pipeline downstream of the first detection component; The switch valves are arranged on the second pipelines upstream and downstream of the second detection component, and the regulating valve is arranged on the second pipeline downstream of the second detection component.

7. The safety valve two-phase flow performance and displacement test device according to claim 1 is characterized by: The first detection component and the second detection component both include a temperature sensor, a pressure sensor, and a flow component; the third detection component includes a temperature sensor and a pressure sensor.

8. The safety valve two-phase flow performance and displacement test device according to claim 7 is characterized in that: The temperature sensors are arranged on the first pipeline and the second pipeline upstream and downstream of the flow component, and the pressure sensors are arranged on the first pipeline and the second pipeline upstream of the flow component.

9. The safety valve two-phase flow performance and displacement test device according to claim 7 is characterized in that: The temperature sensor and the pressure sensor are respectively arranged at the connection ports of the first chamber and the second chamber.

10. The safety valve two-phase flow performance and displacement test device according to claim 1, characterized in that: The measuring component is a displacement sensor.

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