Safety valve test system

Abstract

The invention relates to the technical field of hydraulic testing devices, in particular to a safety valve testing system. The safety valve test system comprises an energy storage assembly, a working cylinder safety valve and a collection assembly, the energy storage assembly is connected with a working cylinder to output fluid with preset pressure to the working cylinder, an inlet of the safety valve is connected with the output end of the working cylinder to receive the fluid output by the working cylinder, and the collection assembly comprises a shell and a transmission part. The shell at least partially sleeves the working cylinder, the shell is provided with a bending cavity, the output end of the working cylinder and the safety valve are arranged at the top of the bending cavity of the shell, the transmission component is communicated with the end, away from the safety valve, of the bending cavity, and the other end of the transmission component is connected with the energy storage assembly. According to the safety valve test system, liquid can be conveniently collected and utilized, and the operation safety of the system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic testing devices, and particularly relates to a safety valve testing system. Background Art

[0002] The nominal flow rate testing method for the safety valve used in hydraulic supports is to use an accumulator filled with a certain pressure gas as the hydraulic source, and supply liquid to the safety valve through a pressurizing system, so as to test the flow rate of the safety valve within the allowable pressure fluctuation range of the safety valve specified in the standard. The existing safety valve testing system consists of a hydraulic source, a check valve, an accumulator group, a booster cylinder, a displacement sensor, a test cylinder, a pressure sensor, a safety valve under test, and a start valve. Its working principle is that the hydraulic source flushes hydraulic oil with a certain pressure into the accumulator group, opens the start valve, the oil enters the booster cylinder, the booster cylinder pushes the test cylinder, so that the liquid in the test cylinder is discharged from the safety valve under test with a certain flow rate and pressure, and the pressure-flow curve of the safety valve under test is obtained from the test information of the displacement sensor and the pressure sensor, thus completing the testing of the safety valve. However, when testing the safety valve, the liquid released by the safety valve, under the action of high pressure, quickly combines with the surrounding air and diffuses around in the form of mist or liquid, and at the same time, the splashing of the liquid may cause harm to the human body or electrical equipment. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0004] Therefore, an embodiment of the present invention provides a safety valve testing system, which is convenient for collecting and utilizing the liquid and improves the safety of the system operation.

[0005] The safety valve testing system according to an embodiment of the present invention is characterized by comprising:

[0006] An energy storage component and a working cylinder, the energy storage component is connected to the working cylinder to output a fluid with a preset pressure to the working cylinder;

[0007] A safety valve, the inlet of the safety valve is connected to the output end of the working cylinder to receive the fluid output by the working cylinder;

[0008] A collection component, the collection component includes a housing and a transmission component, at least part of the housing is sleeved on the working cylinder, the housing has a bent cavity, and the output end of the working cylinder and the safety valve are arranged at the top of the bent cavity of the housing, the transmission component is connected to one end of the bent cavity far away from the safety valve, and the other end of the transmission component is connected to the energy storage component.

[0009] The safety valve testing system according to the embodiment of the present invention is convenient for collecting and utilizing the liquid and improves the safety of the system operation.

[0010] In some embodiments, the bending cavity includes a first cavity and a second cavity that communicate with each other. The first cavity extends in the vertical direction, and the second cavity extends in the extending direction of the working cylinder. Moreover, the size of the first cavity in the vertical direction is smaller than the size of the second cavity in the extending direction of the working cylinder. An exhaust port is provided at one end of the second cavity away from the first cavity.

[0011] In some embodiments, the collection assembly further includes an upper partition plate and a lower partition plate that extend in the vertical direction. The upper partition plate is disposed at the top of the second cavity, and the lower partition plate is disposed at the bottom of the second cavity. The number of the upper partition plates and the lower partition plates is multiple. The upper partition plates and the lower partition plates are arranged alternately in the second cavity along the extending direction of the working cylinder. Moreover, a liquid passing hole is provided at the bottom of the lower partition plate.

[0012] In some embodiments, the distance between the upper partition plate and the bottom of the second cavity is greater than the distance between the lower partition plate and the top of the second cavity.

[0013] In some embodiments, the transmission component includes a filtering component and a first pump. One end of the filtering component is connected to the end of the second cavity away from the first cavity, the other end of the filtering component is connected to the inlet of the first pump, and the outlet of the first pump is connected to the energy storage assembly.

[0014] In some embodiments, the energy storage assembly includes a liquid tank, a second pump, and an accumulator. The liquid tank is connected to the inlet of the second pump, the outlet of the second pump is connected to the input end of the accumulator, and the output end of the accumulator is connected to the working cylinder.

[0015] In some embodiments, the energy storage assembly further includes a flow regulating valve. The working cylinder includes a cylinder body, a plunger, and a first valve. The cylinder body has a cavity, and the plunger is slidably disposed in the cavity to divide the cavity into an input cavity and an output cavity. The input cavity is connected to one end of the flow regulating valve, the other end of the flow regulating valve is connected to the input end of the accumulator, and the outlet of the input cavity is connected to the safety valve.

[0016] In some embodiments, the output fluid pressure of the accumulator is 60 MPa to 80 MPa.

[0017] In some embodiments, the safety valve test system further includes a displacement monitoring member and a pressure monitoring member. The displacement monitoring member extends into the cavity and is connected to the plunger to monitor the displacement of the plunger in the extending direction of the working cylinder, and the pressure monitoring member is disposed at the inlet of the safety valve.

[0018] In some embodiments, the safety valve testing system further includes a sealing ring. The housing is detachably connected to the working cylinder, and an installation groove is provided at the connection between the housing and the working cylinder for installing the sealing ring. Description of the Drawings

[0019] Figure 1 is the hydraulic schematic diagram of the nominal flow rate testing system of the safety valve for the prior art.

[0020] Figure 2 is a schematic diagram of the safety valve testing system according to an embodiment of the present invention.

[0021] Figure 3 is a schematic diagram of the buffer plate in the first cavity according to an embodiment of the present invention.

[0022] Reference Numerals:

[0023] Safety valve 1, collection assembly 2, housing 21, bent cavity 211, first cavity 2111, second cavity 2112, exhaust port 2113, upper partition 22, lower partition 23, transmission component 24, filtering component 241, first pump 242, energy storage assembly 3, liquid tank 31, second pump 32, accumulator 33, flow regulating valve 34, working cylinder 4, cylinder block 41, input cavity 411, output cavity 412, plunger 42, first valve 43, displacement monitoring member 5, pressure monitoring member 6, elastic member 7, buffer plate 8, sealing ring 9,

[0024] Hydraulic source 10, check valve 11, accumulator bank 12, booster cylinder 13, displacement sensor 14, test cylinder 15, pressure sensor 16, safety valve under test 17, start valve 18. Detailed Embodiments

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0026] The safety valve testing system according to an embodiment of the present invention includes a safety valve 1, a collection assembly 2, an energy storage assembly 3, and a working cylinder 4. The energy storage assembly 3 is connected to the working cylinder 4 to output a fluid with a preset pressure to the working cylinder 4. The inlet of the safety valve 1 is connected to the output end of the working cylinder 4 to receive the fluid output by the working cylinder 4. The collection assembly 2 includes a housing 21 and a transmission component 24. The housing 21 at least partially sleeves the working cylinder 4. The housing 21 has a bent cavity 211, and the output end of the working cylinder 4 and the safety valve 1 are arranged at the top of the bent cavity 211 of the housing 21. The transmission component 24 is connected to the end of the bent cavity 211 far from the safety valve 1, and the other end of the transmission component 24 is connected to the energy storage assembly 3.

[0027] Specifically, as Figure 2and Figure 3 As shown in Figure 3 , the energy storage component 3 is adapted to provide a fluid with a preset pressure, and the working cylinder 4 is adapted to output the fluid to the safety valve 1 for testing. The collection component 2 includes a component for collecting the fluid for testing the safety valve 1, that is, after the safety valve 1 overflows, the overflowed fluid is collected and output to the energy storage component 3 through the transmission component 24 for recycling the fluid.

[0028] The upper end of the housing 21 is sleeved on the outer peripheral surface of the working cylinder 4, so as to arrange the output end of the working cylinder 4 and the safety valve 1 at the upper end of the bending cavity 211 of the housing 21. The left end of the working cylinder 4 is sleeved with the housing 21, and the output end of the working cylinder 4 is the left end of the working cylinder 4. The left end of the working cylinder 4 extends into the top of the bending cavity 211, and the safety valve 1 is arranged at the top of the bending cavity 211. The bending cavity 211 first extends in the vertical direction and then extends in the horizontal direction. Thus, the liquid flowing out of the safety valve 1 first impacts the upper end of the bending cavity 211 and then flows back to the lower end of the bending cavity 211 for collection. The end of the bending cavity 211 far from the safety valve 1 is connected to the transmission component 24, that is, the right end of the bending cavity 211 is connected to the transmission component 24, so as to transmit the liquid in the bending cavity 211 to the energy storage component 3 through the transmission component 24 for recycling.

[0029] In the safety valve testing system according to the embodiment of the present invention, by providing the housing 21 and the transmission component 24 for collection, it is convenient to collect and recycle the fluid for testing, and the use cost of testing the safety valve 1 is reduced. At the same time, the safety valve 1 is arranged at the upper end of the bending cavity 211 to buffer the liquid ejected from the safety valve 1 in the bending cavity 211, avoid the liquid directly impacting the connection between the bending cavity 211 and the transmission component 24, further avoid the liquid impacting the transmission component 24, reduce the risk during liquid collection, and improve the safety of system operation.

[0030] In some embodiments, the bending cavity 211 includes a first cavity 2111 and a second cavity 2112 that communicate with each other. The first cavity 2111 extends in the vertical direction, the second cavity 2112 extends in the extending direction of the working cylinder 4, and the size of the first cavity 2111 in the vertical direction is smaller than the size of the second cavity 2112 in the extending direction of the working cylinder 4. An exhaust port 2113 is provided at the end of the second cavity 2112 far from the first cavity 2111.

[0031] Specifically, as Figure 2 and Figure 3As shown, the first chamber 2111 extends along the vertical direction, and the second chamber 2112 extends along the horizontal direction. The extending direction of the first chamber 2111 is orthogonal and connected to that of the second chamber 2112. For example, the lower end of the first chamber 2111 is connected to the left end of the second chamber 2112. The dimension of the first chamber 2111 in the vertical direction is smaller than that of the second chamber 2112 in the horizontal direction, that is, the dimension of the second chamber 2112 in the horizontal direction is longer to facilitate buffering the fluid in the first chamber 2111. At the same time, the length of the first chamber 2111 is smaller to reduce the manufacturing cost. Reducing the dimension of the first chamber 2111 in the vertical direction can also reduce the gravitational potential energy of the liquid flowing out of the safety valve 1 at the top of the first chamber 2111, and avoid excessive impact force on the bottom of the first chamber 2111.

[0032] An exhaust port 2113 is provided at one end of the second chamber 2112 away from the first chamber 2111, that is, the exhaust port 2113 is provided at the upper part of the right end of the second chamber 2112 to ensure the pressure balance inside the system and the smooth flow of the fluid.

[0033] Furthermore, an elastic member 7 and a buffer plate 8 are provided at the place where the first chamber 2111 faces the impact of the safety valve 1. When the safety valve 1 is opened, the fluid directly impacts the buffer plate 8, and the elastic member 7 is tested to be compressed to buffer the liquid. The buffer plate 8 can also be arranged obliquely in the vertical direction to buffer and guide the liquid ejected from the safety valve 1, and further improve the buffering effect.

[0034] In the safety valve test system according to the embodiment of the present invention, through the first chamber 2111 and the second chamber 2112, and the safety valve 1 is arranged at the upper end of the first chamber 2111 to impact the inner wall surface of the first chamber 2111 by the liquid ejected from the inner safety valve 1, so as to buffer the ejected liquid, avoid the liquid directly impacting the connection part of the second chamber 2112 and the transmission component 24, and further avoid the liquid impacting the transmission component 24, reduce the risk during liquid collection, and improve the safety of the system operation.

[0035] At the same time, the dimension of the second chamber 2112 in the horizontal direction is longer to facilitate buffering the fluid in the first chamber 2111. Reducing the manufacturing cost and the dimension of the first chamber 2111 in the vertical direction can also reduce the gravitational potential energy of the liquid flowing out of the safety valve 1 at the top of the first chamber 2111, avoid excessive impact force on the bottom of the first chamber 2111, and improve the stability and safety of the system during use.

[0036] In some embodiments, the collection component 2 further includes an upper partition plate 22 and a lower partition plate 23 extending in the up-down direction. The upper partition plate 22 is disposed at the top of the second chamber 2112, and the lower partition plate 23 is disposed at the bottom of the second chamber 2112. The number of the upper partition plates 22 and the lower partition plates 23 is multiple. The upper partition plates 22 and the lower partition plates 23 are staggeredly arranged in the extending direction of the working cylinder 4 within the second chamber 2112, and the bottom of the lower partition plate 23 has liquid passing holes.

[0037] Specifically, as Figure 2 and Figure 3 shown, the upper end of the upper partition plate 22 is connected to the top of the inner wall surface of the second chamber 2112, that is, the upper end of the upper partition plate 22 is connected to the inner wall surface at the upper end of the second chamber 2112. The lower end of the lower partition plate 23 is connected to the lower wall surface of the second chamber 2112. The upper partition plates 22 and the lower partition plates 23 are alternately arranged in the left-right direction. At the same time, the lower partition plate 23 has liquid passing holes for the liquid to flow through. The discharged liquid passes through the upper and lower staggered partition plates in the liquid collection device. There is a certain distance between the lower end of the upper partition plate 22 and the liquid level in the device. The upper end of the lower partition plate 23 is higher than the lower end of the upper partition plate 22. The lower partition plate 23 is provided with liquid passing holes, so that the liquid in each interval of the lower partition plate 23 is communicated, ensuring that the buffer liquid is in the same plane.

[0038] The upper partition plates 22 and the lower partition plates 23 are staggeredly arranged in the extending direction of the working cylinder 4 within the second chamber 2112, forming an S-shaped liquid channel network, thereby liquefying the atomized gas in the first chamber 2111. When the fluid released by the safety valve 1 enters the second chamber 2112, the upper partition plates 22 and the lower partition plates 23 disperse the impact force of the fluid and slow down the speed of the fluid, thus enhancing the buffering effect. The high-speed and high-pressure fluid is converted into a low-speed and low-pressure fluid, reducing the impact of the fluid on the wall of the second chamber 2112 and the transmission component 24, and improving the stability and safety of the system.

[0039] Due to the staggered arrangement of the upper partition plates 22 and the lower partition plates 23, the fluid is forced to turn and disperse in multiple directions, which helps to optimize the flow path of the fluid, increases the impact probability between the fluid and the upper and lower partition plates 23, reduces energy loss. At the same time, this design also helps to separate the bubbles and impurities in the fluid, improving the purity of the fluid and the reliability of the test results.

[0040] Furthermore, the distance between the upper partition plate 22 and the bottom of the second chamber 2112 is greater than the distance between the lower partition plate 23 and the top of the second chamber 2112. Since there is more space below the upper partition plate 22, the fluid has more space to decelerate and disperse before impacting the upper partition plate 22. This helps to further improve the buffering efficiency and reduce the impact of the fluid on the subsequent components. The larger distance also means that the fluid can form a thicker liquid layer when passing through the upper partition plate 22, which helps to better buffer the fluid.

[0041] In some embodiments, the transmission component 24 includes a filtering component 241 and a first pump 242. One end of the filtering component 241 is connected to the end of the second chamber 2112 away from the first chamber 2111, the other end of the filtering component 241 is connected to the inlet of the first pump 242, and the outlet of the first pump 242 is connected to the energy storage component 3. The filtering component 241 is used to remove impurities, particles, and contaminants in the fluid, ensuring the cleanliness of the fluid during circulation. This is for protecting system components, preventing blockages, and improving test accuracy. The filtering component 241 can effectively reduce the wear and corrosion of components such as the energy storage component 3, the working cylinder 4, and the safety valve 1 by impurities in the fluid, and extend the service life of the system.

[0042] One end of the first pump 242 is connected to the transmission component 24 to pump out the fluid in the bending chamber 211 through the transmission component 24, and the first pump 242 pumps the fluid into the energy storage component 3.

[0043] In some embodiments, the energy storage component 3 includes a liquid tank 31, a second pump 32, and an accumulator 33. The liquid tank 31 is connected to the inlet of the second pump 32, the outlet of the second pump 32 is connected to the input end of the accumulator 33, and the output end of the accumulator 33 is connected to the working cylinder 4.

[0044] Specifically, as Figure 2 and Figure 3 shown, the liquid tank 31 is used to store the fluid for testing, and the first pump 242 pumps the fluid in the bending chamber 211 into the liquid tank 31.

[0045] The inlet of the second pump 32 is connected to the liquid tank 31 to pump the fluid in the liquid tank 31 into the accumulator 33 for pressurization. The accumulator 33 outputs a liquid with a preset pressure and inputs it into the working cylinder 4, and the working cylinder 4 outputs the fluid to test the safety valve 1.

[0046] In some embodiments, the energy storage component 3 further includes a flow regulating valve 34. The working cylinder 4 includes a cylinder block 41, a plunger 42, and a first valve 43. The cylinder block 41 has a cavity, and the plunger 42 is slidably disposed in the cavity to divide the cavity into an input chamber 411 and an output chamber 412. The input chamber 411 is connected to one end of the flow regulating valve 34, the other end of the flow regulating valve 34 is connected to the input end of the accumulator 33, and the outlet of the input chamber 411 is connected to the safety valve 1.

[0047] Specifically, as Figure 2 and Figure 3As shown, the flow regulating valve 34 regulates the flow rate of the fluid output by the accumulator 33. Compared with the accumulator 33 regulating the output flow rate, the flow regulating valve 34 has higher accuracy in regulating the flow rate and is convenient for recording the flow rate. The input end of the working cylinder 4 is adapted to be connected to the flow regulating valve 34 so that the flow rate regulated by the flow regulating valve 34 is output to the input chamber 411 of the working cylinder 4. After the flow rate is input at the input end of the working cylinder 4, the plunger 42 is pressed to move leftward. The safety valve 1 is connected to the output cylinder of the working cylinder 4. When the pressure is greater than the opening pressure of the safety valve 1, the safety valve 1 opens, and the liquid is discharged from the test safety valve 17 at a certain flow rate and pressure, thereby completing the pressure test of the safety valve 1. The working cylinder 4 can be an existing hydraulic cylinder.

[0048] Further, the working cylinder 4 can also be provided with a bottom seal in contact with the plunger 42 of the working cylinder 4, and a sealing ring 9 is arranged on the shaft of the plunger 42 to separate the output chamber 412 and the input chamber 411 to improve the sealing effect.

[0049] The output fluid pressure of the accumulator 33 is 60 MPa to 80 MPa. In the prior art, the output liquid pressure of the accumulator 33 is 31.5 MPa. As Figure 1 shown, the existing safety valve test system is composed of a hydraulic source 10, a one-way valve 11, an accumulator bank 12, a booster cylinder 13, a displacement sensor 14, a test cylinder 15, a pressure sensor 16, a test safety valve 17 and a start valve 18. Since the existing safety valve 1 nominal flow rate test bench uses a boosting method to provide the hydraulic source 10 for the safety valve 1, a large amount of accumulators 33 are used. For example, an 80 L accumulator 33 is required for an 8-piece safety valve 1 test bench with a nominal flow rate of 1000 L / min. At the same time, as the nominal flow rate of the tested safety valve 1 continuously increases, the volume and cylinder diameter of the booster cylinder 13 will also become larger and larger. Therefore, the test bench system is made into several parts and assembled on-site at the manufacturer. It is very inconvenient when moving. The increase in the volume of the booster cylinder 13, as well as the increase in the volume and quantity of the accumulators 33, results in a large floor area for the entire system. Moreover, the use of high-specification booster cylinders 13 and a larger number of accumulators 33 also leads to an increase in cost. In the safety valve test system of the present application, compared with the existing accumulator 33 with an output liquid pressure of 31.5 MPa, a high-pressure accumulator 33 is used, reducing the number of accumulators 33 used and the floor area. The working cylinder 4 (i.e., the hydraulic cylinder) is integrated, and the cylinder diameters of the liquid input end and the output end are equal and both are high-pressure, without the need to increase the liquid, thereby making the hydraulic cylinder structure simple, convenient for manufacturing and maintenance. The test system has a flow regulating valve 34 to meet the flow rate test requirements of safety valves 1 with different nominal flow rate specifications. Compared with the alternative solution, this solution uses a smaller number of accumulators 33 and has a simple hydraulic cylinder structure, resulting in a low cost and a compact structure when testing safety valves 1 with the same flow rate.

[0050] Further, the safety valve testing system further includes a displacement monitoring member 5 and a pressure monitoring member 6. The displacement monitoring member 5 extends into the cavity and is connected to the plunger 42 to monitor the displacement of the plunger 42 in the extending direction of the working cylinder 4, that is, to monitor the displacement of the plunger 42 in the left-right direction. The pressure monitoring member 6 is arranged at the inlet of the safety valve 1 to monitor the pressure of the fluid input into the safety valve 1.

[0051] A sealing ring 9 is also provided. The housing 21 is detachably connected to the working cylinder 4. An installation groove is provided at the connection between the housing 21 and the working cylinder 4 to install the sealing ring 9. The sealing ring 9 is in contact with the inner wall surface of the installation groove of the housing 21 and the outer periphery of the working cylinder 4 to prevent the atomized gas in the first chamber 2111 from being discharged without being liquefied in the second chamber 2112.

[0052] The working principle of the safety valve testing system according to the embodiment of the present invention is as follows: The hydraulic pump transports liquid into the high-pressure accumulator group 12 until the liquid supply stops at the pressure required for the test. The first valve 43 is opened, and the liquid enters through the bottom of the cylinder. The bottom seal is disengaged from the piston of the working cylinder 4. The liquid in the accumulator 33 enters the input end of the working cylinder 4, pushing the plunger 42 of the working cylinder 4. The plunger 42 of the working cylinder 4 moves towards the output end. The safety valve 1 is connected to the output end of the working cylinder 4. When the pressure is greater than the opening pressure of the safety valve 1, the safety valve 1 opens, and the liquid is discharged from the tested safety valve 17 at a certain flow rate and pressure. The pressure-flow curve of the tested safety valve 17 is obtained from the test information of the displacement monitoring member 5 and the pressure monitoring member 6, thereby completing the nominal flow rate test of the safety valve 1. The discharged liquid passes through the upper and lower staggered partitions in the liquid collection device. The lower end of the upper partition 22 is kept at a certain distance from the liquid level in the device. The upper end of the lower partition 23 is higher than the lower end of the upper partition 22. The lower partition 23 is provided with liquid passing holes, so that the liquid in each interval of the lower partition 23 is communicated, ensuring that the buffer liquid is in the same plane. The gas-liquid mixture moves from the high-pressure area to the low-pressure area in an S-shaped form, that is, from the first chamber 2111 to the second chamber 2112, and at the same time continuously impacts the partitions along the moving direction, causing the liquid to adhere to the baffle and flow into the buffer liquid at the bottom of the device, and the gas is discharged from the exhaust port 2113. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship 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 should not be construed as a limitation of the present invention.

[0053] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0054] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0056] In the present invention, terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do 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. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0057] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A safety valve testing system, characterized in that: include: An energy storage component and a working cylinder, wherein the energy storage component is connected to the working cylinder to output a fluid of a preset pressure to the working cylinder; A safety valve, wherein an inlet of the safety valve is connected to an output end of the working cylinder to receive the fluid output by the working cylinder; A collecting component, the collecting component includes a shell and a transmission component, the shell is at least partially mounted on the working cylinder, the shell has a bending cavity, and the output end of the working cylinder and the safety valve are arranged at the top of the bending cavity of the shell, the transmission component is connected to one end of the bending cavity away from the safety valve, and the other end of the transmission component is connected to the energy storage component.

2. The safety valve testing system according to claim 1, characterized in that: The bending cavity includes a first cavity and a second cavity which are interconnected, wherein the first cavity extends in the up-down direction, and the second cavity extends in the extension direction of the working cylinder, and the size of the first cavity in the up-down direction is smaller than the size of the second cavity in the extension direction of the working cylinder, and an exhaust port is provided at one end of the second cavity away from the first cavity.

3. The safety valve testing system according to claim 2, characterized in that: The collecting assembly also includes an upper baffle and a lower baffle extending in the up-down direction, the upper baffle is arranged at the top of the second chamber, and the lower baffle is arranged at the bottom of the second chamber. There are multiple upper baffles and lower baffles, and the upper baffles and lower baffles are staggered in the second chamber along the extension direction of the working cylinder, and the bottom of the lower baffle has a liquid hole.

4. The safety valve testing system according to claim 3, characterized in that: The distance between the upper partition and the bottom of the second cavity is greater than the distance between the lower partition and the top of the second cavity.

5. The safety valve testing system according to claim 4, characterized in that: The transmission component includes a filter component and a first pump, one end of the filter component is connected to an end of the second chamber away from the first chamber, the other end of the filter component is connected to the inlet of the first pump, and the outlet of the first pump is connected to the energy storage assembly.

6. The safety valve testing system according to claim 1, characterized in that: The energy storage assembly includes a liquid tank, a second pump and an accumulator, the liquid tank is connected to the inlet of the second pump, the outlet of the second pump is connected to the input end of the accumulator, and the output end of the accumulator is connected to the working cylinder.

7. The safety valve testing system according to claim 6, characterized in that: The energy storage assembly also includes a flow regulating valve, the working cylinder includes a cylinder body, a plunger and a first valve, the cylinder body has a cavity, the plunger is slidably arranged in the cavity to separate the cavity into an input cavity and an output cavity, the input cavity is connected to one end of the flow regulating valve, the other end of the flow regulating valve is connected to the input end of the accumulator, and the outlet of the input cavity is connected to the safety valve.

8. The safety valve testing system according to claim 6, characterized in that: The output fluid pressure of the accumulator is 60MPa-80MPa.

9. The safety valve testing system according to claim 6, characterized in that: It also includes a displacement monitoring component and a pressure monitoring component. The displacement monitoring component extends into the cavity and is connected to the plunger to monitor the displacement of the plunger in the extension direction of the working cylinder. The pressure monitoring component is arranged at the inlet of the safety valve.

10. The safety valve testing system according to any one of claims 1 to 9, characterized in that: It also includes a sealing ring. The shell is detachably connected to the working cylinder. A mounting groove is provided at the connection between the shell and the working cylinder to install the sealing ring.

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