Safety valve pressure relief performance testing system and method

Abstract

The present application relates to a safety valve pressure relief performance test system and method, and belongs to the field of safety valve testing. The safety valve pressure relief performance test system of the present application includes: an electronic pressure relief valve, which is arranged on the safety valve pressure relief test inlet pipeline; and a controller, which is connected to the electronic pressure relief valve and is used to send a pressure relief pressure control signal to the electronic pressure relief valve, so that the electronic pressure relief valve can adjust its own pressure relief pressure according to the pressure relief pressure control signal, and then adjust the water pressure of the test water entering the safety valve pressure relief test inlet. Through the present application, it is possible to provide a variety of test water pressures to the safety valve for pressure relief testing through a water supply end, and can realize pressure relief testing under a variety of pressure relief conditions, which helps to reduce the testing workload and improve the testing efficiency.

Description

Technical Field

[0001] The present application belongs to the field of safety valve testing, and specifically relates to a safety valve pressure relief performance testing system and method. Background Art

[0002] The safety valve is a safety device designed to prevent pressure equipment or containers from bursting due to internal pressure exceeding the limit. It belongs to the automatic valve category and plays an important protective role in personal safety and equipment operation.

[0003] Taking the water heater as an example, a safety valve needs to be installed on the water inlet pipe of the water heater. Under normal circumstances, the cold water in the water inlet pipe can enter the water heater through the safety valve for heating; when the internal pressure of the water heater rises to reach the internal leakage pressure specified in the design, the internal leakage channel of the safety valve opens, and the water in the water heater flows back into the water inlet pipe; when the internal pressure of the water heater rises to reach the external leakage pressure specified in the design, the safety valve also opens the external leakage channel, so that the water in the water heater can also flow out through the external leakage port of the safety valve.

[0004] In actual use, the safety valve must undergo relevant pressure tests before use.

[0005] In the relevant pressure test of the safety valve, for example, the relevant pressure test of the safety valve is carried out by providing multiple water supply ends with different water pressures. Each water supply end only provides a fixed water pressure. During the operation, the operator needs to install the same safety valve to be tested on multiple water supply ends in succession, so it needs to be installed and disassembled multiple times, which makes the workload of the operator large. At the same time, it also causes the pressure test time of each safety valve to be too long, which reduces the efficiency of the test. Summary of the invention

[0006] In order to overcome the problems existing in the related art at least to a certain extent, the present application provides a safety valve pressure relief performance testing system and method, which helps to reduce the testing workload and improve the testing efficiency.

[0007] To achieve the above objectives, this application adopts the following technical solutions:

[0008] First,

[0009] The present application provides a safety valve pressure relief performance testing system, comprising:

[0010] An electronic pressure relief valve is installed on the safety valve pressure relief test inlet pipeline; and

[0011] The controller is connected to the electronic pressure relief valve and is used to send a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve can adjust its own pressure relief pressure according to the pressure relief pressure control signal, thereby adjusting the water pressure of the test water entering the pressure relief test inlet of the safety valve.

[0012] Furthermore, the system further comprises:

[0013] The water pressure detection device is arranged on the safety valve pressure relief test inlet pipeline and is used for performing water pressure detection on the test water.

[0014] Further, the water pressure detection device is: a water pressure sensor;

[0015] The water pressure sensor is connected to the controller and is used to detect the water pressure of the test water and send the water pressure detection result to the controller;

[0016] The controller is further configured to: display the water pressure detection result through a display module of the controller itself; or,

[0017] Determining whether it is necessary to send a feedback compensation adjustment signal to the electronic pressure relief valve according to the water pressure detection result;

[0018] If it is determined to be necessary, the feedback compensation adjustment signal is sent to the electronic pressure relief valve, so that the electronic pressure relief valve performs pressure relief pressure compensation adjustment according to the feedback compensation adjustment signal, thereby regulating the water pressure of the test water entering the safety valve pressure relief test inlet to meet the corresponding preset water pressure condition.

[0019] Furthermore, the system further comprises:

[0020] The first flow detection device is arranged on the pipeline of the internal pressure leakage port of the safety valve, and is used for detecting the internal leakage flow of water flowing out of the internal pressure leakage port of the safety valve.

[0021] Further, the first flow detection device is: a first flow sensor;

[0022] The first flow sensor is connected to the controller and is used to detect the internal leakage flow of water flowing out of the pressure internal leakage port of the safety valve, and send the internal leakage flow detection result to the controller;

[0023] The controller is further used to: display the internal leakage flow detection result through the display module of the controller itself; or,

[0024] Whether the internal leakage pressure test of the safety valve is qualified is determined based on the internal leakage flow detection result.

[0025] Furthermore, the system further comprises:

[0026] The second flow detection device is arranged on the pressure leakage outlet pipeline of the safety valve, and is used for detecting the leakage flow of water flowing out of the pressure leakage outlet of the safety valve.

[0027] Further, the second flow detection device is: a second flow sensor;

[0028] The second flow sensor is connected to the controller and is used to detect the leakage flow of water flowing out of the pressure leakage port of the safety valve and send the leakage flow detection result to the controller;

[0029] The controller is further used to: display the leakage flow detection result through the display module of the controller itself; or,

[0030] Whether the safety valve leakage pressure test is qualified is determined based on the leakage flow detection result.

[0031] Furthermore, the system further comprises:

[0032] The first gate valve is arranged on the internal pressure leakage pipeline of the safety valve and is used for controlling the on-off of the internal pressure leakage pipeline of the safety valve.

[0033] Further, the first gate valve is: a first electronic gate valve;

[0034] The first electronic gate valve is connected to the controller and is used to receive a first on-off control signal sent by the controller to control the on-off of the internal pressure drain pipe of the safety valve.

[0035] Furthermore, the system further comprises:

[0036] The second gate valve is arranged on the safety valve pressure relief test inlet pipeline and is used to control the on-off of the safety valve pressure relief test inlet pipeline.

[0037] Further, the second gate valve is: a second electronic gate valve;

[0038] The second electronic gate valve is connected to the controller and is used to receive a second on-off control signal sent by the controller to control the on-off of the safety valve pressure relief test inlet pipeline.

[0039] Furthermore, the system further comprises:

[0040] A water pump is connected to the controller and is used to provide the test water to the safety valve pressure relief test inlet through the safety valve pressure relief test inlet pipeline.

[0041] Furthermore, the system further comprises:

[0042] A water tank is used to provide the test water to the water pump and to receive water flowing out from the internal pressure leakage port of the safety valve and / or the external pressure leakage port of the safety valve.

[0043] Furthermore, the water pressure detection device is a pointer-type water pressure gauge or a digital water pressure gauge.

[0044] Furthermore, the first flow detection device is: a pointer flow meter or a digital flow meter.

[0045] Furthermore, the second flow detection device is: a pointer flow meter or a digital flow meter.

[0046] Furthermore, the first gate valve is: a first manual gate valve.

[0047] Furthermore, the second gate valve is: a second manual gate valve.

[0048] Second,

[0049] The present application provides a method for testing the pressure relief performance of a safety valve, including:

[0050] Sending a pressure relief pressure control signal to the electronic pressure relief valve, so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, and then controls the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition;

[0051] When the water pressure of the test water meets the corresponding preset water pressure condition, at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port is obtained, and whether the safety valve pressure relief test is qualified is judged according to at least one of the internal leakage flow detection result and the external leakage flow detection result.

[0052] Further, the sending of a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, includes:

[0053] A first pressure relief pressure control signal is sent to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the first pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the safety valve pressure relief test inlet to be lower than the preset safety valve internal relief pressure.

[0054] Further, when the water pressure of the test water meets the corresponding preset water pressure condition, obtaining at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port, and judging whether the safety valve pressure relief test is qualified according to at least one of the internal leakage flow detection result and the external leakage flow detection result, including:

[0055] When the water pressure of the test water is less than the preset internal leakage pressure of the safety valve, obtaining the internal leakage flow detection result and the external leakage flow detection result;

[0056] If it is determined according to the internal leakage flow detection result that water flows out of the safety valve pressure internal leakage port, or,

[0057] If it is determined according to the leakage flow detection result that water is flowing out of the pressure leakage port of the safety valve,

[0058] It is judged that the safety valve pressure relief test fails.

[0059] Further, the sending of a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, further includes:

[0060] When the water pressure of the test water is less than the preset internal leakage pressure of the safety valve, if it is judged according to the internal leakage flow detection result that no water flows out of the internal leakage port of the safety valve pressure, and it is judged according to the external leakage flow detection result that no water flows out of the external leakage port of the safety valve pressure, a second pressure relief pressure control signal is sent to the electronic pressure relief valve, so that the electronic pressure relief valve controls its own pressure relief pressure according to the second pressure relief pressure control signal, and further controls the water pressure of the test water entering the safety valve pressure relief test inlet to be greater than or equal to the preset safety valve internal leakage pressure, and less than the preset safety valve external leakage pressure.

[0061] Further, when the water pressure of the test water meets the corresponding preset water pressure condition, obtaining at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port, and judging whether the safety valve pressure relief test is qualified according to at least one of the internal leakage flow detection result and the external leakage flow detection result, including:

[0062] When the water pressure of the test water is greater than or equal to the preset safety valve internal leakage pressure and less than the preset safety valve external leakage pressure, obtaining the internal leakage flow detection result and the external leakage flow detection result;

[0063] Comparing the internal leakage flow detection result and the external leakage flow detection result with a preset internal leakage flow condition;

[0064] If the internal leakage flow detection result and the external leakage flow detection result meet the preset internal leakage flow condition, it is determined that the internal leakage pressure test of the safety valve is qualified.

[0065] Furthermore, the preset internal leakage flow condition is that the internal leakage flow detection result is greater than or equal to a preset internal leakage flow threshold, and the external leakage flow detection result is zero.

[0066] Further, the sending of a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, further includes:

[0067] If it is determined that the safety valve internal leakage pressure test is qualified, a closing signal is sent to the first electronic gate valve arranged on the safety valve pressure internal leakage outlet pipeline, so that the first electronic gate valve controls itself to close according to the closing signal, thereby controlling the safety valve pressure internal leakage outlet pipeline to close; at the same time,

[0068] A third pressure relief pressure control signal is also sent to the electronic pressure relief valve so that the electronic pressure relief valve adjusts its own pressure relief pressure according to the third pressure relief pressure control signal, thereby adjusting the water pressure of the test water entering the safety valve pressure relief test inlet to be greater than or equal to the preset safety valve external leakage pressure.

[0069] Further, when the water pressure of the test water meets the corresponding preset water pressure condition, obtaining at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port, and judging whether the safety valve pressure relief test is qualified according to at least one of the internal leakage flow detection result and the external leakage flow detection result, further comprising:

[0070] When the water pressure of the test water is greater than or equal to the preset safety valve leakage pressure, obtaining the leakage flow detection result;

[0071] Comparing the leakage flow detection result with a preset leakage flow condition;

[0072] If the leakage flow detection result meets the preset leakage flow condition, it is determined that the safety valve leakage pressure test is qualified;

[0073] If the leakage flow detection result does not meet the preset leakage flow condition, it is determined that the safety valve leakage pressure test is unqualified.

[0074] Furthermore, the preset leakage flow condition is that the leakage flow detection result is greater than or equal to a preset leakage flow threshold.

[0075] Further, the sending of a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, further includes:

[0076] After sending a pressure relief pressure control signal to the electronic pressure relief valve, obtaining a water pressure detection result of the test water;

[0077] Determining whether it is necessary to send a feedback compensation adjustment signal to the electronic pressure relief valve according to a water pressure detection result of the test water;

[0078] If it is determined to be necessary, the feedback compensation adjustment signal is sent to the electronic pressure relief valve, so that the electronic pressure relief valve performs pressure relief pressure compensation adjustment according to the feedback compensation adjustment signal, thereby regulating the water pressure of the test water entering the safety valve pressure relief test inlet to meet the corresponding preset water pressure condition.

[0079] This application adopts the above technical solution, which has at least the following beneficial effects:

[0080] The present application sets an electronic pressure relief valve on the safety valve pressure relief test inlet pipeline, uses a controller to adjust the pressure relief pressure of the electronic pressure relief valve, and then adjusts the water pressure of the test water entering the safety valve pressure relief test inlet. The present application can provide a variety of test water pressures to the safety valve for pressure relief testing through one water supply end, and can realize pressure relief testing under a variety of pressure relief conditions, which helps to reduce the testing workload and improve the testing efficiency.

[0081] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0083] Figure 1 A schematic diagram of the piping structure of a safety valve pressure relief performance test system provided in one embodiment of the present application;

[0084] Figure 2 A schematic diagram of the circuit structure of a safety valve pressure relief performance testing system provided in one embodiment of the present application;

[0085] Figure 3 A schematic flow chart of a method for testing the pressure relief performance of a safety valve provided in accordance with an embodiment of the present application. DETAILED DESCRIPTION

[0086] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other implementation methods obtained by ordinary technicians in the field without creative work belong to the scope of protection of the present application.

[0087] Figure 1 A schematic diagram of the piping structure of a safety valve pressure relief performance test system provided in one embodiment of the present application; Figure 2 A circuit diagram of a safety valve pressure relief performance test system provided in one embodiment of the present application; Figure 1 and Figure 2 As shown, the safety valve pressure relief performance test system includes:

[0088] An electronic pressure relief valve 1 is arranged on the safety valve pressure relief test inlet pipeline; and

[0089] The controller 2 is connected to the electronic pressure relief valve 1 and is used to send a pressure relief pressure control signal to the electronic pressure relief valve 1 so that the electronic pressure relief valve 1 can adjust its own pressure relief pressure according to the pressure relief pressure control signal, thereby adjusting the water pressure of the test water entering the pressure relief test inlet of the safety valve.

[0090] like Figure 1 As shown, the safety valve has a water inlet A, a water outlet B and a pressure relief port C. The following takes the installation of a safety valve on a water heater as an example to specifically explain the various ports and pressure relief functions of the safety valve.

[0091] The water inlet A of the safety valve is installed on the water pipe, the water outlet B of the safety valve is connected to the water inlet of the water heater, and the pressure relief port C is a free port and cannot be closed. During normal use, the direction from the water inlet A to the water outlet B of the safety valve is connected, and the tap water in the water pipe enters from the water inlet A of the safety valve, exits from the water outlet B of the safety valve, and enters the water heater for heating. When the internal pressure of the water heater rises so that the pressure at the water outlet B end of the safety valve is greater than or equal to the pressure at the water inlet A end, and is less than the internal leakage pressure of the safety valve itself, the channel from the water inlet A to the water outlet B of the safety valve is closed. When the internal pressure of the water heater continues to rise so that the pressure at the water outlet B end of the safety valve is greater than or equal to the internal leakage pressure of the safety valve itself, and is less than the external leakage pressure of the safety valve itself, the channel from the water outlet B to the water inlet A of the safety valve is opened, and the water in the water heater flows back through the safety valve into the water pipe, that is, the safety valve performs internal leakage and pressure relief. When the internal pressure of the water heater continues to rise and the pressure at the safety valve outlet B is greater than or equal to the external leakage pressure of the safety valve itself, the channel from the safety valve outlet B to the water inlet A and the channel from the safety valve outlet B to the pressure relief port C are both opened, achieving internal and external pressure relief at the same time.

[0092] When testing the pressure relief performance of the safety valve, the water outlet B of the safety valve is used as the pressure relief test inlet of the safety valve, the water inlet A of the safety valve is used as the internal pressure leakage port, and the pressure relief port C of the safety valve is used as the external pressure leakage port. The pressure relief test inlet of the safety valve is connected to the water supply end through a pipeline, and test water of various pressures is injected from the pressure relief test inlet of the safety valve to test the pressure relief performance of the safety valve.

[0093] In the above scheme, an electronic pressure relief valve 1 is set on the safety valve pressure relief test inlet pipeline, and the controller 2 is used to adjust the pressure relief pressure of the electronic pressure relief valve 1, thereby adjusting the water pressure of the test water entering the safety valve pressure relief test inlet, thereby realizing providing multiple test water pressures to the safety valve through one water supply end.

[0094] In a specific application, the water supply pressure at the water supply end is a fixed value greater than the external leakage pressure of the safety valve. The pressure relief pressure of the electronic pressure relief valve 1 is regulated by the controller 2 to regulate the water pressure of the test water entering the pressure relief test inlet of the safety valve. For example, to perform a normal water pressure test on the safety valve, the operator can first set a pressure relief pressure value on the controller 2, which is less than the internal leakage pressure of the safety valve. Through the pressure relief pressure, the water pressure of the test water in the inlet pipeline of the safety valve pressure relief test can be correspondingly regulated to be less than the internal leakage pressure of the safety valve. Then, it can be visually checked whether there is water flowing out of the internal pressure leakage port and the external pressure leakage port of the safety valve. If water flows out of any of the two ports, it can be said that the pressure relief of the safety valve is unqualified; if no water flows out of the internal pressure leakage port and the external pressure leakage port of the safety valve, it means that the safety valve test is qualified under normal water pressure conditions.

[0095] If no water flows out of both the internal pressure leak port and the external pressure leak port, the operator can continue to set a pressure relief pressure value on the controller 2, which is greater than or equal to the internal leakage pressure of the safety valve and less than the external leakage pressure of the safety valve. Through the pressure relief pressure, the test water pressure in the safety valve pressure relief test inlet pipeline can be adjusted accordingly to be greater than or equal to the internal leakage pressure of the safety valve and less than the external leakage pressure of the safety valve, so as to perform an internal leakage test on the safety valve. It can be visually checked whether water flows out of the internal pressure leak port and the external pressure leak port of the safety valve. If only water flows out of the internal pressure leak port of the safety valve, it means that the internal leakage of the safety valve is qualified. If no water flows out of the internal pressure leak port of the safety valve, or water flows out of the external pressure leak port of the safety valve, it means that the pressure relief test is unqualified.

[0096] If water only flows out of the internal pressure leakage port of the safety valve, the operator can continue to set a pressure relief value on the controller 2, which is greater than or equal to the external leakage pressure of the safety valve. Through the pressure relief pressure, the test water pressure in the inlet pipeline of the safety valve pressure relief test can be adjusted accordingly to be greater than or equal to the external leakage pressure of the safety valve, and then check whether water flows out of the pressure leakage port of the safety valve. If water flows out, it means that the entire process of the safety valve pressure relief test is qualified. If no water flows out, it means that the safety valve leakage is unqualified.

[0097] For the above safety valve pressure relief test, if one point fails, it means that the safety valve under test fails the pressure relief test.

[0098] In summary, through the above embodiments, it is possible to provide a variety of test water pressures to the safety valve for pressure relief testing through one water supply end, thereby realizing pressure relief testing under various pressure relief conditions, such as internal leakage test and external leakage test. In specific applications, the safety valve only needs to be installed and disassembled once, which helps to reduce the workload of safety valve testing and improve testing efficiency.

[0099] like Figure 1 As shown, in one embodiment, the system further includes:

[0100] The water pressure detection device 3 is arranged on the safety valve pressure relief test inlet pipeline and is used for performing water pressure detection on the test water.

[0101] In the above embodiment, by setting the water pressure detection device 3 on the safety valve pressure relief test inlet pipeline, the operator can check the water pressure of the test water in the safety valve pressure relief test inlet pipeline in real time according to the detection result of the water pressure detection device 3. According to the water pressure detection result, the operator can judge whether it is necessary to fine-tune the water pressure of the test water, which is helpful to realize the precise control of the water pressure of the test water at the safety valve pressure relief test inlet.

[0102] In a specific application, the water pressure detection device 3 may be a pointer-type water pressure gauge or a digital water pressure gauge; or,

[0103] like Figure 2 As shown, the water pressure detection device 3 can also be: a water pressure sensor 3a;

[0104] The water pressure sensor 3a is connected to the controller 2 and is used to detect the water pressure of the test water and send the water pressure detection result to the controller 2;

[0105] The controller 2 is further used to: display the water pressure detection result through the display module of the controller 2 itself; or,

[0106] Determining whether it is necessary to send a feedback compensation adjustment signal to the electronic pressure relief valve 1 according to the water pressure detection result;

[0107] If it is determined to be necessary, the feedback compensation adjustment signal is sent to the electronic pressure relief valve 1, so that the electronic pressure relief valve 1 performs pressure relief pressure compensation adjustment according to the feedback compensation adjustment signal, and then adjusts the water pressure of the test water entering the safety valve pressure relief test inlet to meet the corresponding preset water pressure condition.

[0108] Through the above scheme, the operator can obtain the water pressure detection result of the test water according to the display of the pointer water pressure gauge or the digital water pressure gauge, or can obtain the water pressure detection result of the test water according to the display of the display module of the controller 2 itself.

[0109] In practical applications, pointer-type water pressure gauges rely on human eyes to observe the readings, and the results obtained from different directions are different. Therefore, the results obtained by different people or in different postures may have large deviations. However, digital water pressure gauges, or the water pressure sensor 3a cooperates with the controller 2, and the display module of the controller 2 itself displays the water pressure detection results sent by the water pressure sensor 3a, which can directly display the detection results numerically, making it convenient to observe the readings and avoid deviations.

[0110] A water pressure sensor 3a is provided on the inlet pipeline of the safety valve pressure relief test, which can detect the water pressure of the test water in the inlet pipeline of the safety valve pressure relief test in real time. When the water pressure of the test water is regulated, for example, the water pressure of the test water is regulated to be lower than the internal leakage pressure of the safety valve; for example, the water pressure of the test water is regulated to be higher than the internal leakage pressure of the safety valve and lower than the external leakage pressure of the safety valve; for example, the water pressure of the test water is regulated to be higher than the external leakage pressure of the safety valve. The controller 2 receives the detected water pressure detection result, and can feedback control the pressure relief pressure of the electronic pressure relief valve 1 according to the water pressure detection result, which helps to improve the pressure relief pressure regulation accuracy of the electronic pressure relief valve 1.

[0111] like Figure 1 As shown, in one embodiment, the system further includes:

[0112] The first flow detection device 4 is arranged on the pipeline of the internal pressure leakage port of the safety valve, and is used for detecting the internal leakage flow of water flowing out of the internal pressure leakage port of the safety valve.

[0113] In the above embodiment, when testing the internal leakage of the safety valve, by setting the first flow detection device 4 on the pipeline of the safety valve pressure internal leakage port, the operator can confirm whether the water flow rate of the safety valve pressure internal leakage port is qualified based on the detection result of the first flow detection device 4, thereby avoiding the uncertainty problem when manually confirming the water flow size of the safety valve pressure internal leakage port based on experience and visual inspection.

[0114] In a specific application, the first flow detection device 4 may be: a pointer flow meter or a digital flow meter; or,

[0115] like Figure 2 As shown, the first flow detection device 4 may be: a first flow sensor 4a;

[0116] The first flow sensor 4a is connected to the controller 2 and is used to detect the internal leakage flow of water flowing out of the pressure internal leakage port of the safety valve, and send the internal leakage flow detection result to the controller 2;

[0117] The controller 2 is further used to: display the internal leakage flow detection result through the display module of the controller 2 itself; or,

[0118] Whether the internal leakage pressure test of the safety valve is qualified is determined based on the internal leakage flow detection result.

[0119] Through the above scheme, the operator can obtain the internal leakage flow detection result according to the display of the pointer flow meter or the digital flow meter; or,

[0120] The controller 2 can display the internal leakage flow detection result through its own display module, or an internal leakage flow threshold can be preset in the controller 2, and the internal leakage flow detection result is compared with the threshold to determine whether the internal leakage pressure test is qualified.

[0121] like Figure 1 As shown, in one embodiment, the system further includes:

[0122] The second flow detection device 5 is arranged on the pipeline of the pressure leakage port of the safety valve, and is used to detect the leakage flow of water flowing out of the pressure leakage port of the safety valve.

[0123] In the above embodiment, when testing the safety valve for leakage, by setting a second flow detection device 5 on the pipeline of the safety valve pressure leakage port, the operator can confirm whether the water flow at the safety valve pressure leakage port is qualified based on the detection result of the second flow detection device 5, thereby avoiding the problem of uncertainty when manually confirming the water flow size at the safety valve pressure leakage port based on experience and visual inspection.

[0124] In a specific application, the second flow detection device 5 may be: a pointer flow meter or a digital flow meter; or,

[0125] like Figure 2 As shown, the second flow detection device 5 may be: a second flow sensor 5a;

[0126] The second flow sensor 5a is connected to the controller 2 and is used to detect the leakage flow of water flowing out of the pressure leakage port of the safety valve and send the leakage flow detection result to the controller 2;

[0127] The controller 2 is further used to: display the leakage flow detection result through the display module of the controller 2 itself; or,

[0128] Whether the safety valve leakage pressure test is qualified is determined based on the leakage flow detection result.

[0129] Through the above scheme, the operator can obtain the leakage flow detection result according to the display of the pointer flow meter or the digital flow meter; or,

[0130] The controller 2 can display the leakage flow detection result through its own display module, or a leakage flow threshold can be preset in the controller 2, and the leakage flow detection result is compared with the threshold to determine whether the leakage pressure test is qualified.

[0131] like Figure 1 As shown, in one embodiment, the system further includes:

[0132] The first gate valve 6 is arranged on the internal pressure leakage pipeline of the safety valve, and is used to control the opening and closing of the internal pressure leakage pipeline of the safety valve.

[0133] In specific applications, when the safety valve is subjected to an external leakage pressure test, water will flow out of both the external pressure leakage port and the internal pressure leakage port of the safety valve. The water flowing out of the internal pressure leakage port of the safety valve plays a certain degree of diversion role, which will affect the accuracy of the water flow detection of the external pressure leakage port of the safety valve. Through the above-mentioned embodiment scheme, a first gate valve 6 is arranged on the internal pressure leakage port pipeline of the safety valve, and the on-off of the internal pressure leakage port pipeline of the safety valve can be controlled. When the safety valve is subjected to an external leakage pressure test, the first gate valve 6 is controlled to be closed, and water is blocked from flowing out of the internal pressure leakage port of the safety valve, and can only flow out from the external pressure leakage port of the safety valve, which helps to improve the accuracy of the water flow detection of the pressure leakage port of the whole valve.

[0134] In a specific application, the first gate valve 6 may be: a first manual gate valve; or

[0135] like Figure 2 As shown, the first gate valve 6 may also be: a first electronic gate valve 6a;

[0136] The first electronic gate valve 6a is connected to the controller 2, and is used to receive a first on-off control signal sent by the controller 2 to control the on-off of the internal pressure drain pipe of the safety valve.

[0137] In actual application, the on-off of the safety valve pressure internal leakage pipeline can be controlled by manually operating the first manual gate valve, or the on-off of the first electronic gate valve 6a can be controlled by operating the controller 2, thereby achieving the purpose of controlling the on-off of the safety valve pressure internal leakage pipeline.

[0138] like Figure 1 As shown, in one embodiment, the system further includes:

[0139] The second gate valve 7 is arranged on the safety valve pressure relief test inlet pipeline and is used to control the on-off of the safety valve pressure relief test inlet pipeline.

[0140] In the above embodiment, a second gate valve 7 is provided on the safety valve pressure relief test inlet pipeline to control the on-off of the test water in the safety valve pressure relief test inlet pipeline.

[0141] In a specific application, the second gate valve 7 may be: a second manual gate valve; or

[0142] like Figure 2 As shown, the second gate valve 7 is: a second electronic gate valve 7a;

[0143] The second electronic gate valve 7a is connected to the controller 2, and is used to receive a second on-off control signal sent by the controller 2 to control the on-off of the safety valve pressure relief test inlet pipeline.

[0144] In actual application, the second manual gate valve can be manually operated to control the on-off of the test water in the safety valve pressure relief test inlet pipeline, or the controller 2 can be operated to control the on-off of the second electronic gate valve 7a, thereby achieving the purpose of controlling the on-off of the test water in the safety valve pressure relief test inlet pipeline.

[0145] like Figure 1 and Figure 2 As shown, in one embodiment, the system further includes:

[0146] The water pump 8 is connected to the controller 2 and is used to provide the test water to the safety valve pressure relief test inlet through the safety valve pressure relief test inlet pipeline.

[0147] The above embodiment scheme provides an application scheme of the water pump 8 as the water supply end. The operation is performed on the controller 2 to control the opening of the water pump 8. The water pump 8 can stably output test water with a certain water pressure to the safety valve. For example, it can stably output test water with a pressure greater than the leakage pressure of the safety valve, and then the water pressure of the test water is further regulated by the electronic pressure relief valve 1.

[0148] like Figure 1 As shown, in one embodiment, the system further includes:

[0149] The water tank 9 is used to provide the test water to the water pump 8 and to receive water flowing out from the internal pressure leakage port of the safety valve and / or the external pressure leakage port of the safety valve.

[0150] In a specific application, the water tank 9 is filled with a sufficient amount of water, the water pump end pipeline of the water pump 8 is submerged in the water of the water tank 9, and the water outlets of the safety valve pressure internal leakage pipeline and the safety valve pressure external leakage pipeline are set in the water tank 9. The water discharged from the safety valve pressure internal leakage pipeline and the safety valve pressure external leakage pipeline is collected through the water tank 9 to realize the recycling of the test water.

[0151] In the above-mentioned related embodiments, the manual operation is used for explanation. When the system is equipped with the controller 2, automatic testing can also be realized to further improve the testing efficiency and accuracy.

[0152] Figure 3 A flow chart of a method for testing the pressure relief performance of a safety valve provided in one embodiment of the present application; Figure 3 As shown, the method includes:

[0153] Step S301, sending a pressure relief pressure control signal to the electronic pressure relief valve, so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, and then controls the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition;

[0154] Step S302: When the water pressure of the test water meets the corresponding preset water pressure condition, at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port is obtained, and whether the safety valve pressure relief test is qualified is determined based on at least one of the internal leakage flow detection result and the external leakage flow detection result.

[0155] The above scheme can be applied to Figure 1 and Figure 2 In the system shown, automatic control of the controller is realized, the electronic pressure relief valve is arranged on the safety valve pressure relief test inlet pipeline, and several pressure relief pressures of the electronic pressure relief valve are pre-configured in the controller. By sending a pressure relief pressure control signal to the electronic pressure relief valve, the pressure relief pressure of the electronic pressure relief valve is regulated, so that the water pressure of the test water after the pressure relief control meets the corresponding preset water pressure condition.

[0156] For example, the lower limit of the internal leakage pressure of the safety valve is 0.3MPa, the lower limit of the external leakage pressure is 0.7MPa, the water pump provides a water supply pressure of 1MPa, and the controller can preset several pressure relief pressure values ​​to control the pressure relief pressure of the electronic pressure relief valve. For example, the preset pressure relief pressure values ​​are 0.2MPa, 0.5MPa and 0.8MPa. When the controller sends a 0.2MPa pressure relief pressure control signal to the electronic pressure relief valve, the 1MPa water supply pressure provided by the water pump can be pressure-relieved and regulated to 0.2MPa, so that the water pressure of the test water is lower than 0.3MPa; or, when the controller sends a 0.5MPa pressure relief pressure control signal to the electronic pressure relief valve, the 1MPa water supply pressure provided by the water pump can be pressure-relieved and regulated to 0.5MPa, so that the water pressure of the test water meets the internal water relief pressure condition of the safety valve; or, when the controller sends a 0.8MPa pressure relief pressure control signal to the electronic pressure relief valve, the 1MPa water supply pressure provided by the water pump can be pressure-relieved and regulated to 0.8MPa, so that the water pressure of the test water meets the external water relief pressure condition of the safety valve.

[0157] By installing flow sensors on the safety valve pressure internal leakage outlet pipeline and the safety valve pressure external leakage outlet pipeline respectively, when the water pressure of the test water meets the corresponding preset water pressure condition, the internal leakage flow detection result of the safety valve pressure internal leakage outlet and the external leakage flow detection result of the safety valve pressure external leakage outlet are respectively obtained, and the pressure relief situation of the safety valve can be judged according to at least one of the internal leakage flow detection result and the external leakage flow detection result.

[0158] The above-mentioned embodiment scheme is further described below through specific examples.

[0159] In one embodiment, the sending of a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, includes:

[0160] A first pressure relief pressure control signal is sent to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the first pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the safety valve pressure relief test inlet to be lower than the preset safety valve internal relief pressure.

[0161] For example, the lower limit of the internal leakage pressure of the safety valve is 0.3MPa, the lower limit of the external leakage pressure is 0.7MPa, and the water pump provides a water supply pressure of 1MPa. The controller can preset several pressure relief pressure values ​​to control the pressure relief pressure of the electronic pressure relief valve. In a specific application, for example, the first pressure relief pressure control signal sent by the controller to the electronic pressure relief valve is a 0.2MPa pressure relief pressure control signal, and the 1MPa water supply pressure provided by the water pump is regulated to 0.2MPa, so that the water pressure of the test water is less than the internal leakage pressure of the safety valve of 0.3MPa.

[0162] Further, when the water pressure of the test water meets the corresponding preset water pressure condition, obtaining at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port, and judging whether the safety valve pressure relief test is qualified according to at least one of the internal leakage flow detection result and the external leakage flow detection result, including:

[0163] When the water pressure of the test water is less than the preset internal leakage pressure of the safety valve, obtaining the internal leakage flow detection result and the external leakage flow detection result;

[0164] If it is determined according to the internal leakage flow detection result that water flows out of the safety valve pressure internal leakage port, or,

[0165] If it is determined according to the leakage flow detection result that water is flowing out of the pressure leakage port of the safety valve,

[0166] It is judged that the safety valve pressure relief test fails.

[0167] In a specific application scenario, after receiving the first pressure relief pressure control signal, the electronic pressure relief valve adjusts its own pressure relief pressure by 0.2MPa, and adjusts the 1MPa water supply pressure provided by the water pump to 0.2MPa, which is less than the internal leakage pressure of the safety valve of 0.3MPa. Then, the internal leakage flow detection result and the external leakage flow detection result are obtained, and according to whether the internal leakage flow detection result and the external leakage flow detection result are zero, it can be determined whether water flows out of both the internal leakage port of the safety valve and the external leakage port of the safety valve. When the water pressure of the test water is 0.2MPa, which is lower than the internal leakage pressure of the safety valve of 0.3MPa, no water should flow out of the internal leakage port and the external leakage port of the safety valve. If the internal leakage flow detection result and the external leakage flow detection result are both zero, it means that the safety valve test is qualified under this condition. If at least one of the internal leakage flow detection result and the external leakage flow detection result is not zero, it means that water flows out of at least one of the internal leakage port and the external leakage port of the safety valve, and it can be judged that the safety valve pressure relief is unqualified.

[0168] Further, the sending of a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, further includes:

[0169] When the water pressure of the test water is less than the preset internal leakage pressure of the safety valve, if it is judged according to the internal leakage flow detection result that no water flows out of the internal leakage port of the safety valve pressure, and it is judged according to the external leakage flow detection result that no water flows out of the external leakage port of the safety valve pressure, a second pressure relief pressure control signal is sent to the electronic pressure relief valve, so that the electronic pressure relief valve controls its own pressure relief pressure according to the second pressure relief pressure control signal, and further controls the water pressure of the test water entering the safety valve pressure relief test inlet to be greater than or equal to the preset safety valve internal leakage pressure, and less than the preset safety valve external leakage pressure.

[0170] In a specific application scenario, when the water pressure of the test water is 0.2MPa, which is lower than the internal leakage pressure of the safety valve of 0.3MPa, and it is determined that no water flows out of the internal pressure leakage port and the external pressure leakage port of the safety valve, the controller sends a second pressure relief pressure control signal of 0.5MPa to the electronic pressure relief valve. After receiving the second pressure relief pressure control signal, the electronic pressure relief valve adjusts its own pressure relief pressure to 0.5MPa, and adjusts the water pressure of the test water from 0.2MPa to 0.5MPa. The water pressure of the test water is greater than the internal leakage pressure of the safety valve of 0.3MPa, and less than the external leakage pressure of the safety valve of 0.7MPa, so as to be used for internal leakage testing.

[0171] Further, when the water pressure of the test water meets the corresponding preset water pressure condition, obtaining at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port, and judging whether the safety valve pressure relief test is qualified according to at least one of the internal leakage flow detection result and the external leakage flow detection result, including:

[0172] When the water pressure of the test water is greater than or equal to the preset safety valve internal leakage pressure and less than the preset safety valve external leakage pressure, obtaining the internal leakage flow detection result and the external leakage flow detection result;

[0173] Comparing the internal leakage flow detection result and the external leakage flow detection result with a preset internal leakage flow condition;

[0174] If the internal leakage flow detection result and the external leakage flow detection result meet the preset internal leakage flow condition, it is determined that the internal leakage pressure test of the safety valve is qualified.

[0175] In a specific application scenario, when the water pressure of the test water is adjusted to 0.5MPa, the water pressure of the test water satisfies the requirement of being greater than the internal leakage pressure of the safety valve of 0.3MPa and less than the external leakage pressure of the safety valve of 0.7MPa. When the above conditions are met, the internal leakage flow detection result and the external leakage flow detection result are obtained, and the internal leakage test analysis is performed according to the preset internal leakage flow condition. If the internal leakage flow detection result and the external leakage flow detection result meet the preset internal leakage flow condition, it is judged that the internal leakage pressure test of the safety valve is qualified; if not, it is judged that the safety valve pressure relief test is unqualified.

[0176] In one embodiment, the preset internal leakage flow condition is that the internal leakage flow detection result is greater than or equal to a preset internal leakage flow threshold, and the external leakage flow detection result is zero.

[0177] The preset internal leakage flow threshold in the above embodiment needs to be determined in actual application according to the internal leakage specification of the actual safety valve product. When the safety valve pressure relief test fails, it may be that the flow rate of the safety valve pressure internal leakage port is too small, or water flows out of the safety valve pressure external leakage port.

[0178] Further, the sending of a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, further includes:

[0179] If it is determined that the safety valve internal leakage pressure test is qualified, a closing signal is sent to the first electronic gate valve arranged on the safety valve pressure internal leakage outlet pipeline, so that the first electronic gate valve controls itself to close according to the closing signal, thereby controlling the safety valve pressure internal leakage outlet pipeline to close; at the same time,

[0180] A third pressure relief pressure control signal is also sent to the electronic pressure relief valve so that the electronic pressure relief valve adjusts its own pressure relief pressure according to the third pressure relief pressure control signal, thereby adjusting the water pressure of the test water entering the safety valve pressure relief test inlet to be greater than or equal to the preset safety valve external leakage pressure.

[0181] In a specific application scenario, after the safety valve internal leakage pressure test is passed, the controller sends a closing signal to the first electronic gate valve arranged on the safety valve pressure internal leakage pipe, controls the first electronic gate valve to close, and prevents water from flowing out of the safety valve pressure internal leakage port; at the same time, the third pressure relief pressure control signal sent by the controller to the electronic pressure relief valve is a pressure relief pressure control signal of 0.8MPa. After receiving the third pressure relief pressure control signal, the electronic pressure relief valve adjusts its own pressure relief pressure to 0.8MPa, and adjusts the water pressure of the test water from 0.5MPa to 0.8MPa, so that the water pressure of the test water meets the requirement of being greater than the safety valve external leakage pressure of 0.7MPa.

[0182] Through this scheme, after the internal leakage pressure test of the safety valve is passed, the controller is triggered to perform two actions. One action is to control the first electronic gate valve on the internal leakage pipe of the safety valve to close, which can avoid the diversion formed after the water flows out of the internal leakage port of the safety valve and reduce the accuracy of the safety valve leakage flow detection result. The other action is to control the electronic pressure relief valve to adjust its own pressure relief pressure so that the water pressure of the test water meets the leakage test pressure condition for conducting a leakage test.

[0183] Further, when the water pressure of the test water meets the corresponding preset water pressure condition, obtaining at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port, and judging whether the safety valve pressure relief test is qualified according to at least one of the internal leakage flow detection result and the external leakage flow detection result, further comprising:

[0184] When the water pressure of the test water is greater than or equal to the preset safety valve leakage pressure, obtaining the leakage flow detection result;

[0185] Comparing the leakage flow detection result with a preset leakage flow condition;

[0186] If the leakage flow detection result meets the preset leakage flow condition, it is determined that the safety valve leakage pressure test is qualified;

[0187] If the leakage flow detection result does not meet the preset leakage flow condition, it is determined that the safety valve leakage pressure test has failed.

[0188] In a specific application scenario, the water pressure of the test water is adjusted from 0.5MPa to 0.8MPa, and the water pressure of the test water satisfies the requirement of being greater than the safety valve leakage pressure of 0.8MPa. Then the leakage flow detection result is obtained, and a leakage test analysis is performed according to the preset leakage flow condition. If the leakage flow detection result meets the preset leakage flow condition, it is judged that the safety valve leakage pressure test is qualified; if not, it is judged that the safety valve leakage pressure test is unqualified.

[0189] Furthermore, the preset leakage flow condition is that the leakage flow detection result is greater than or equal to a preset leakage flow threshold.

[0190] The preset leakage flow threshold in the above embodiment needs to be determined in actual application according to the leakage specification of the actual safety valve product. When the safety valve external pressure relief test is qualified, it means that the flow rate of the safety valve pressure leakage port is greater than or equal to the preset leakage flow threshold; when the safety valve external pressure relief test is unqualified, it means that the flow rate of the safety valve pressure leakage port is less than the preset leakage flow threshold, for example, the flow rate is too small or there is no flow.

[0191] In one embodiment, the sending of a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, further includes:

[0192] After sending a pressure relief pressure control signal to the electronic pressure relief valve, obtaining a water pressure detection result of the test water;

[0193] Determining whether it is necessary to send a feedback compensation adjustment signal to the electronic pressure relief valve according to a water pressure detection result of the test water;

[0194] If it is determined to be necessary, the feedback compensation adjustment signal is sent to the electronic pressure relief valve, so that the electronic pressure relief valve performs pressure relief pressure compensation adjustment according to the feedback compensation adjustment signal, thereby regulating the water pressure of the test water entering the safety valve pressure relief test inlet to meet the corresponding preset water pressure condition.

[0195] In the specific application of the above embodiment scheme, a water pressure sensor is provided on the safety valve pressure relief test inlet pipeline, which can detect the water pressure of the test water in the safety valve pressure relief test inlet pipeline in real time. When the water pressure of the test water is regulated, for example, the test water pressure is regulated to be lower than the internal leakage pressure of the safety valve; for example, the test water pressure is regulated to be higher than the internal leakage pressure of the safety valve and lower than the external leakage pressure of the safety valve; for example, the test water pressure is regulated to be higher than the external leakage pressure of the safety valve. The controller receives the detected water pressure detection result, and can perform feedback control on the pressure relief pressure of the electronic pressure relief valve according to the water pressure detection result, which helps to improve the pressure relief pressure regulation accuracy of the electronic pressure relief valve.

[0196] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0197] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0198] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0199] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0200] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0201] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0202] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0203] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0204] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A safety valve pressure relief performance test system, characterized in that: include: An electronic pressure relief valve is installed on the safety valve pressure relief test inlet pipeline; as well as a controller connected to the electronic pressure relief valve and used to send a pressure relief pressure control signal to the electronic pressure relief valve, so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve; A water pressure detection device, arranged on the safety valve pressure relief test inlet pipeline, for performing water pressure detection on the test water; The water pressure detection device is: a water pressure sensor; The water pressure sensor is connected to the controller and is used to detect the water pressure of the test water and send the water pressure detection result to the controller; The controller is further configured to: display the water pressure detection result through a display module of the controller itself; or, Determining whether it is necessary to send a feedback compensation adjustment signal to the electronic pressure relief valve according to the water pressure detection result; If it is determined to be necessary, the feedback compensation adjustment signal is sent to the electronic pressure relief valve, so that the electronic pressure relief valve performs pressure relief pressure compensation adjustment according to the feedback compensation adjustment signal, thereby regulating the water pressure of the test water entering the safety valve pressure relief test inlet to meet the corresponding preset water pressure condition.

2. The system according to claim 1, characterized in that The system further comprises: The first flow detection device is arranged on the pipeline of the internal pressure leakage port of the safety valve, and is used for detecting the internal leakage flow of water flowing out of the internal pressure leakage port of the safety valve.

3. The system according to claim 2, characterized in that The first flow detection device is: a first flow sensor; The first flow sensor is connected to the controller and is used to detect the internal leakage flow of water flowing out of the pressure internal leakage port of the safety valve, and send the internal leakage flow detection result to the controller; The controller is further used to: display the internal leakage flow detection result through the display module of the controller itself; or, Whether the internal leakage pressure test of the safety valve is qualified is determined based on the internal leakage flow detection result.

4. The system according to claim 1, characterized in that The system further comprises: The second flow detection device is arranged on the pressure leakage outlet pipeline of the safety valve, and is used for detecting the leakage flow of water flowing out of the pressure leakage outlet of the safety valve.

5. The system according to claim 4, characterized in that The second flow detection device is: a second flow sensor; The second flow sensor is connected to the controller and is used to detect the leakage flow of water flowing out of the pressure leakage port of the safety valve and send the leakage flow detection result to the controller; The controller is further used to: display the leakage flow detection result through the display module of the controller itself; or, Whether the safety valve leakage pressure test is qualified is determined based on the leakage flow detection result.

6. The system according to claim 2, characterized in that The system further comprises: The first gate valve is arranged on the internal pressure leakage pipeline of the safety valve and is used for controlling the on-off of the internal pressure leakage pipeline of the safety valve.

7. The system according to claim 6, characterized in that The first gate valve is: a first electronic gate valve; The first electronic gate valve is connected to the controller and is used to receive a first on-off control signal sent by the controller to control the on-off of the internal pressure drain pipe of the safety valve.

8. The system according to claim 1, characterized in that The system further comprises: The second gate valve is arranged on the safety valve pressure relief test inlet pipeline and is used to control the on-off of the safety valve pressure relief test inlet pipeline.

9. The system according to claim 8, characterized in that The second gate valve is: a second electronic gate valve; The second electronic gate valve is connected to the controller and is used to receive a second on-off control signal sent by the controller to control the on-off of the safety valve pressure relief test inlet pipeline.

10. The system according to claim 1, characterized in that The system further comprises: A water pump is connected to the controller and is used to provide the test water to the safety valve pressure relief test inlet through the safety valve pressure relief test inlet pipeline.

11. The system according to claim 10, characterized in that The system further comprises: A water tank is used to provide the test water to the water pump and to receive water flowing out from the internal pressure leakage port of the safety valve and / or the external pressure leakage port of the safety valve.

12. The system according to claim 1, characterized in that The water pressure detection device is a pointer-type water pressure gauge or a digital water pressure gauge.

13. The system according to claim 2, characterized in that The first flow detection device is: a pointer-type flow meter or a digital flow meter.

14. The system according to claim 4, characterized in that The second flow detection device is: a pointer-type flow meter or a digital flow meter.

15. The system according to claim 6, characterized in that The first gate valve is: a first manual gate valve.

16. The system according to claim 8, characterized in that The second gate valve is: a second manual gate valve.

17. A method for testing the pressure relief performance of a safety valve, characterized in that: include: Sending a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, and further controls the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, including: after sending the pressure relief pressure control signal to the electronic pressure relief valve, obtaining the water pressure detection result of the test water; determining whether it is necessary to send a feedback compensation adjustment signal to the electronic pressure relief valve according to the water pressure detection result of the test water; if it is determined to be necessary, sending the feedback compensation adjustment signal to the electronic pressure relief valve so that the electronic pressure relief valve performs pressure relief pressure compensation adjustment according to the feedback compensation adjustment signal, and further controls the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition; When the water pressure of the test water meets the corresponding preset water pressure condition, at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port is obtained, and whether the safety valve pressure relief test is qualified is judged according to at least one of the internal leakage flow detection result and the external leakage flow detection result.

18. The method according to claim 17, characterized in that The sending of a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, and then controls the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, including: A first pressure relief pressure control signal is sent to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the first pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the safety valve pressure relief test inlet to be lower than the preset safety valve internal relief pressure.

19. The method according to claim 18, characterized in that When the water pressure of the test water meets the corresponding preset water pressure condition, obtaining at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port, and judging whether the safety valve pressure relief test is qualified according to at least one of the internal leakage flow detection result and the external leakage flow detection result, including: When the water pressure of the test water is less than the preset internal leakage pressure of the safety valve, obtaining the internal leakage flow detection result and the external leakage flow detection result; If it is determined according to the internal leakage flow detection result that water flows out of the safety valve pressure internal leakage port, or, If it is determined according to the leakage flow detection result that water is flowing out of the pressure leakage port of the safety valve, It is judged that the safety valve pressure relief test fails.

20. The method according to claim 19, characterized in that The step of sending a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, further includes: When the water pressure of the test water is less than the preset internal leakage pressure of the safety valve, if it is judged according to the internal leakage flow detection result that no water flows out of the internal leakage port of the safety valve pressure, and it is judged according to the external leakage flow detection result that no water flows out of the external leakage port of the safety valve pressure, a second pressure relief pressure control signal is sent to the electronic pressure relief valve, so that the electronic pressure relief valve controls its own pressure relief pressure according to the second pressure relief pressure control signal, and further controls the water pressure of the test water entering the safety valve pressure relief test inlet to be greater than or equal to the preset safety valve internal leakage pressure, and less than the preset safety valve external leakage pressure.

21. The method according to claim 20, characterized in that When the water pressure of the test water meets the corresponding preset water pressure condition, obtaining at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port, and judging whether the safety valve pressure relief test is qualified according to at least one of the internal leakage flow detection result and the external leakage flow detection result, including: When the water pressure of the test water is greater than or equal to the preset safety valve internal leakage pressure and less than the preset safety valve external leakage pressure, obtaining the internal leakage flow detection result and the external leakage flow detection result; Comparing the internal leakage flow detection result and the external leakage flow detection result with a preset internal leakage flow condition; If the internal leakage flow detection result and the external leakage flow detection result meet the preset internal leakage flow condition, it is determined that the internal leakage pressure test of the safety valve is qualified.

22. The method according to claim 21, characterized in that The preset internal leakage flow condition is that the internal leakage flow detection result is greater than or equal to a preset internal leakage flow threshold, and the external leakage flow detection result is zero.

23. The method according to claim 21, characterized in that The step of sending a pressure relief pressure control signal to the electronic pressure relief valve so that the electronic pressure relief valve controls its own pressure relief pressure according to the pressure relief pressure control signal, thereby controlling the water pressure of the test water entering the pressure relief test inlet of the safety valve to meet the corresponding preset water pressure condition, further includes: If it is determined that the safety valve internal leakage pressure test is qualified, a closing signal is sent to the first electronic gate valve arranged on the safety valve pressure internal leakage outlet pipeline, so that the first electronic gate valve controls itself to close according to the closing signal, thereby controlling the safety valve pressure internal leakage outlet pipeline to close; at the same time, A third pressure relief pressure control signal is also sent to the electronic pressure relief valve so that the electronic pressure relief valve adjusts its own pressure relief pressure according to the third pressure relief pressure control signal, thereby adjusting the water pressure of the test water entering the safety valve pressure relief test inlet to be greater than or equal to the preset safety valve external leakage pressure.

24. The method according to claim 23, characterized in that When the water pressure of the test water meets the corresponding preset water pressure condition, obtaining at least one of the internal leakage flow detection result of the safety valve pressure internal leakage port and the external leakage flow detection result of the safety valve pressure external leakage port, and judging whether the safety valve pressure relief test is qualified according to at least one of the internal leakage flow detection result and the leakage flow detection result, further comprising: When the water pressure of the test water is greater than or equal to the preset safety valve leakage pressure, obtaining the leakage flow detection result; Comparing the leakage flow detection result with a preset leakage flow condition; If the leakage flow detection result meets the preset leakage flow condition, it is determined that the safety valve leakage pressure test is qualified; If the leakage flow detection result does not meet the preset leakage flow condition, it is determined that the safety valve leakage pressure test has failed.

25. The method according to claim 24, characterized in that The preset leakage flow condition is that the leakage flow detection result is greater than or equal to a preset leakage flow threshold.

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