A safety valve sealing performance testing device

Abstract

The utility model discloses a safety valve sealing performance testing arrangement relates to safety valve testing arrangement technical field, the utility model discloses a bottom plate, both sides of bottom plate top are all fixedly connected with the supporting plate, the top fixedly connected with the test board of supporting plate, the top fixedly connected with the positioning mechanism of test board, the positioning mechanism includes the fixed plate, and the bottom fixedly connected with test board of fixed plate. The utility model discloses through electric push rod drive clamping plate flexible adjustment clamping interval, cooperate the spacing function of spacing groove and the protection function of arc buffer pad, can adapt to different specifications, the size's safety valve, need not to replace special component to complete diversification test, improve device versatility and test efficiency greatly, can form steady clamping to safety valve in the testing process, effectively avoid the safety valve displacement caused by pressure effect when pressurizing, ensure the sealing of test interface.

Description

Technical Field

[0001] This utility model belongs to the technical field of safety valve testing devices, and in particular relates to a safety valve sealing performance testing device. Background Technology

[0002] As a core safety protection component of pressure equipment, the sealing performance of a safety valve directly determines the pressure stability and operational safety during equipment operation. If a safety valve fails to seal, it may lead to risks such as media leakage and abnormal pressure fluctuations, and could even cause equipment damage or safety accidents.

[0003] Chinese patent application CN223122429U discloses a safety valve sealing performance testing device, including a test box. An air pump is fixedly connected to the left side of the test box, and an air outlet pipe is fixedly connected to the output end of the air pump. A safety valve body is located inside the test box, and the right end of the air outlet pipe is fixedly installed to the left end of the safety valve body. This device uses a water pump, inlet pipe, and outlet pipe to automatically add water to the test box. Through the coordination of the air pump, safety valve body, air outlet pipe, air supply pipe, and valve, after the valve is closed, the air pump supplies air to the safety valve body. The presence of air bubbles in the water is observed to determine the sealing performance of the safety valve body, thus effectively testing the sealing performance of the safety valve body.

[0004] The aforementioned device lacks a quick positioning structure, and the installation and fixing method of the safety valve in the test box is relatively simple, lacking a limiting and clamping structure. During the gas supply and pressurization process, the safety valve may be displaced or shaken due to pressure, resulting in poor sealing of the test interface and thus affecting the accuracy of the test results.

[0005] To address this issue, we provide a safety valve sealing performance testing device. Utility Model Content

[0006] The purpose of this invention is to provide a safety valve sealing performance testing device. By combining the test bench and the positioning mechanism, it solves the problem that the lack of a rapid positioning structure in existing devices leads to poor sealing of the test interface.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a safety valve sealing performance testing device, comprising a base plate, with support plates fixedly connected to both sides of the top of the base plate, a test platform fixedly connected to the top of the support plates, and a positioning mechanism fixedly connected to the top of the test platform. The positioning mechanism includes a fixing plate, the bottom of which is fixedly connected to the test platform. Side plates are fixedly connected to both sides of the top of the fixing plate, an electric push rod is fixedly connected to one side of each side plate, and a clamping plate is fixedly connected to one side of the electric push rod. A limiting groove is formed on the top of the test platform, and a through hole is formed in the inner cavity of the limiting groove. A connecting pipe is connected to the bottom of the test platform. The electric push rod is horizontally positioned, and its cylinder is fixed to the side plate. The end faces the inner side of the positioning space, and the clamping plate is arc-shaped to fit the outer circumference of the safety valve. It is detachably connected to the end of the electric push rod for easy maintenance and replacement. The shape of the limiting groove is adapted to the bottom of the safety valve to limit the bottom of the safety valve and prevent horizontal displacement. The through hole runs through the upper and lower surfaces of the test bench to provide a channel for the flow of the test medium. The connecting pipe is sealed to the through hole for connecting external medium supply equipment to realize the introduction and export of the test medium. The electric push rod drives the clamping plate to realize horizontal displacement adjustment. Together with the limiting groove on the top of the test bench, it forms a double fixation of upper and lower limit and clamping on both sides for the safety valve, ensuring the stability of the safety valve position during the test and avoiding displacement or shaking due to the pressure of the medium.

[0009] The present invention is further configured such that a gas supply device is fixedly connected to the top of the base plate, the gas supply device includes a fixed base, the bottom of the fixed base is fixedly connected to the base plate, and a gas pump is fixedly connected to the top of the fixed base. A hose is connected to one side of the gas pump, and a connector is connected to one side of the hose. The gas pump outputs the gas required for testing. The hose makes the docking of the gas pump with subsequent connecting parts more flexible and adaptable to different installation position requirements. The connector facilitates quick and easy sealing docking of the hose and the connecting pipe, ensuring the continuity and sealing of the gas supply, and providing a stable medium source for sealing performance testing.

[0010] The present invention is further configured such that mounting plates are fixedly connected to both sides of the top of the test bench, and a pressure detection mechanism is fixedly connected to the top of the mounting plates. The pressure detection mechanism includes a connecting plate, the bottom of which is fixedly connected to the mounting plate, and a cylinder is fixedly connected to the top of the connecting plate. A sealing cover is fixedly connected to the bottom of the cylinder, and a pressure gauge is provided on the surface of the sealing cover. The cylinder drives the sealing cover to quickly seal the top of the safety valve, avoiding the problem of incomplete sealing caused by manual sealing. The pressure gauge can display the internal pressure value in real time during the test, making it easy for operators to grasp the pressure status in a timely manner, adjust the test parameters, and quickly detect abnormal pressure changes. This provides a direct basis for judging the sealing performance of the safety valve and improves the accuracy and reliability of the test results.

[0011] The present invention is further configured such that a sliding rod is fixedly connected to one side of the opposite side plate, the top surface of the sliding rod is movably connected to the clamping plate, and the sliding rod is fixed between the two side plates, providing horizontal support and guidance for the clamping plate, ensuring that the clamping plate always moves in a straight line when the electric push rod drives the clamping plate to move, and avoiding clamping misalignment caused by clamping plate offset.

[0012] The present invention is further configured such that a sealing sleeve is provided on the top of the test bench, the sealing sleeve is embedded in the inner cavity of the limiting groove, and the sealing sleeve is fitted with the bottom of the safety valve to form a sealed protection, effectively preventing the test medium from leaking from the contact surface between the bottom of the safety valve and the limiting groove.

[0013] The present invention is further configured such that a support base is fixedly connected to the bottom of the air pump, and the bottom of the support base is fixedly connected to the fixed base. The support base enhances the stability of the air pump installation and reduces the transmission of vibration generated by the air pump during operation to the base plate.

[0014] The present invention is further provided that the surface of the connecting pipe is provided with a control valve, which is a manual valve. The manual control valve can control the flow and cut-off of the test medium, so that the operator can pre-charge and vent the medium circuit before the test.

[0015] The present invention is further provided with a buffer pad on one side of the clamping plate. The buffer pad has an arc-shaped structure, which fits the clamping plate and is adapted to the outer circumference of the safety valve, thereby increasing the contact area between the clamping plate and the safety valve and improving the fit during clamping.

[0016] The present invention has the following beneficial effects.

[0017] 1. This utility model uses an electric push rod to drive the clamping plate to flexibly adjust the clamping distance. Combined with the limiting function of the limiting groove and the protective function of the arc-shaped buffer pad, it can be adapted to safety valves of different specifications and sizes. It can complete diverse tests without replacing special parts, greatly improving the versatility and testing efficiency of the device. It can also form a stable clamp on the safety valve during the test, effectively avoiding the displacement of the safety valve due to pressure when pressurized, and ensuring the sealing of the test interface.

[0018] 2. This utility model achieves reliable sealing of the test interface quickly by using a cylinder to drive the sealing cover. The pressure gauge can provide real-time feedback of the pressure value during the test process, making it easy for operators to set and adjust the pressure parameters according to the test requirements. At the same time, it can monitor the pressure changes during the pressure holding stage in real time and promptly capture abnormal pressure fluctuations. Compared with the traditional method of manually observing bubbles, it not only improves the accuracy of pressure control and meets the test requirements of high sealing scenarios, but also reduces human observation errors and ensures the consistency of test results. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a perspective view of a safety valve sealing performance testing device.

[0021] Figure 2 This is a bottom-view perspective view of a safety valve sealing performance testing device.

[0022] Figure 3 This is a three-dimensional view of the positioning mechanism in a safety valve sealing performance testing device.

[0023] Figure 4 This is a rear-view perspective view of a safety valve sealing performance testing device.

[0024] Figure 5 This is a three-dimensional view of the pressure detection mechanism in a safety valve sealing performance testing device.

[0025] In the attached diagram: 1. Base plate; 2. Support plate; 3. Test bench; 4. Positioning mechanism; 41. Fixing plate; 42. Side plate; 43. Electric push rod; 44. Clamping plate; 45. Limiting groove; 46. Through hole; 47. Connecting pipe; 5. Air supply equipment; 51. Fixing seat; 52. Air pump; 53. Hose; 54. Connector; 6. Mounting plate; 7. Pressure detection mechanism; 71. Connecting plate; 72. Cylinder; 73. Sealing cover; 74. Pressure gauge; 8. Slide rod; 9. Sealing sleeve; 10. Support seat; 11. Control valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figure 1-5This utility model is a safety valve sealing performance testing device, including a base plate 1, with support plates 2 fixedly connected to both sides of the top of the base plate 1, and a test platform 3 fixedly connected to the top of the support plates 2. A sealing sleeve 9 is provided on the top of the test platform 3, and the sealing sleeve 9 is embedded in the inner cavity of a limiting groove 45. A positioning mechanism 4 is fixedly connected to the top of the test platform 3, and the positioning mechanism 4 includes a fixing plate 41, the bottom of which is fixedly connected to the test platform 3. Side plates 42 are fixedly connected to both sides of the top of the fixing plate 41. A slide rod 8 is fixedly connected to one side of the opposite side plate 42. The top surface of the slide rod 8 is movably connected to the clamping plate 44. An electric push rod 43 is fixedly connected to one side of the side plate 42. A clamping plate 44 is fixedly connected to one side of the electric push rod 43. A buffer pad is provided on one side of the clamping plate 44. The buffer pad has an arc-shaped structure. A limit groove 45 is opened on the top of the test platform 3. A through hole 46 is opened in the inner cavity of the limit groove 45. A connecting pipe 47 is connected to the bottom of the test platform 3. A control valve 11 is provided on the surface of the connecting pipe 47. The control valve 11 is a manual valve.

[0028] Specifically: The electric push rod 43 is model XTL100-50. The electric push rod 43 is horizontally positioned, with its cylinder body fixed to the side plate 42. The push rod end faces the inner side of the positioning space. The clamping plate 44 is arc-shaped, adapting to the outer circumference of the safety valve, and is detachably connected to the push rod end of the electric push rod 43 for easy maintenance and replacement. The shape of the limiting groove 45 matches the bottom of the safety valve, used to limit the bottom of the safety valve and prevent horizontal displacement. The through hole 46 penetrates the upper and lower surfaces of the test bench 3, providing a channel for the flow of the test medium. The connecting pipe 47 is sealed to the through hole 46, used for connecting external medium supply equipment to realize the introduction and export of the test medium. The electric push rod 43 drives the clamping plate 44 to achieve horizontal displacement adjustment. Combined with the limiting groove 45 on the top of the test bench 3, this forms a double-fixed system of upper and lower limits and clamping on both sides for the safety valve. The sealing sleeve 9 is embedded in the inner cavity of the limiting groove 45 and fits against the bottom of the safety valve to form a sealed protection, effectively preventing the test medium from leaking from the contact surface between the bottom of the safety valve and the limiting groove 45. The slide rod 8 is fixed between the two side plates 42, providing horizontal support and guidance for the clamping plate 44, ensuring that the electric push rod 43 drives the clamping plate 44 to move in a straight line, avoiding clamping misalignment caused by the clamping plate 44 shifting. The arc-shaped buffer pad fits against the clamping plate 44 and is adapted to the outer circumference of the safety valve, increasing the contact area between the clamping plate 44 and the safety valve, and improving the fit during clamping. The support seat 10 enhances the stability of the air pump 52 installation and reduces the vibration generated by the air pump 52 during operation from being transmitted to the base plate 1.

[0029] An air supply device 5 is fixedly connected to the top of the base plate 1. The air supply device 5 includes a fixed base 51. The bottom of the fixed base 51 is fixedly connected to the base plate 1. An air pump 52 is fixedly connected to the top of the fixed base 51. A hose 53 is connected to one side of the air pump 52. A connector 54 is connected to one side of the hose 53. Mounting plates 6 are fixedly connected to both sides of the top of the test bench 3. A pressure detection mechanism 7 is fixedly connected to the top of the mounting plate 6. The pressure detection mechanism 7 includes a connecting plate 71. The bottom of the connecting plate 71 is fixedly connected to the mounting plate 6. A cylinder 72 is fixedly connected to the top of the connecting plate 71. A sealing cover 73 is fixedly connected to the bottom of the cylinder 72. A pressure gauge 74 is provided on the surface of the sealing cover 73. A support base 10 is fixedly connected to the bottom of the air pump 52. The bottom of the support base 10 is fixedly connected to the fixed base 51.

[0030] Specifically: the air pump 52 is model GBW-0.25 / 8, which outputs the gas required for testing. The hose 53 makes the connection between the air pump 52 and subsequent connecting parts more flexible and adaptable to different installation position requirements. The connector 54 facilitates quick and easy sealing connection between the hose 53 and the connecting pipe 47, ensuring the continuity and sealing of the gas supply and providing a stable medium source for sealing performance testing. The cylinder 72 is model SC32×50-S, which drives the sealing cover 73 to quickly seal the top of the safety valve, avoiding the problem of incomplete sealing caused by manual sealing. The pressure gauge 74 can display the internal pressure value in real time during the test, allowing operators to keep track of the pressure status, adjust test parameters, and quickly detect abnormal pressure changes, providing a direct basis for judging the sealing performance of the safety valve and improving the accuracy and reliability of the test results. The manual control valve 11 can control the flow and cut-off of the test medium, allowing operators to pre-charge and vent the medium circuit before testing.

[0031] The working principle of this utility model is as follows: the hose 53 and the connecting pipe 47 are quickly sealed and connected through the connector 54 to complete the construction of the air supply circuit. The safety valve to be tested is placed in the limiting groove 45. The electric push rod 43 is started. The electric push rod 43 drives the clamping plate 44 to move inward along the horizontal direction to form a clamping and fixing on both sides.

[0032] Start cylinder 72, which drives the sealing cover 73 to move vertically downward until the sealing cover 73 is in contact with the top of the safety valve, quickly achieving a seal on the top of the safety valve and avoiding the problem of incomplete sealing caused by manual sealing.

[0033] Open the manual control valve 11 and start the air pump 52. The air pump 52 outputs gas, which flows through the hose 53, connector 54, connecting pipe 47 and through hole 46 in sequence, and finally enters the safety valve. The operator observes the real-time display of the pressure gauge 74 and adjusts the output power of the air pump 52 according to the test requirements to achieve precise control of the internal pressure of the safety valve and ensure that the pressure reaches the test set value.

[0034] After the pressure stabilizes, the pressure holding test begins. During this process, pressure changes are continuously monitored through pressure gauge 74. If the safety valve's sealing performance is poor, internal gas will leak, causing abnormal fluctuations in the pressure gauge 74 value. Operators can quickly determine the safety valve's sealing status by observing the pressure changes.

[0035] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A safety valve sealing performance testing device, comprising a base plate (1), characterized in that: Support plates (2) are fixedly connected to both sides of the top of the base plate (1), and a test platform (3) is fixedly connected to the top of the support plate (2). A positioning mechanism (4) is fixedly connected to the top of the test platform (3). The positioning mechanism (4) includes a fixing plate (41), the bottom of which is fixedly connected to the test platform (3). Side plates (42) are fixedly connected to both sides of the top of the fixing plate (41). An electric push rod (43) is fixedly connected to one side of the side plate (42). A clamping plate (44) is fixedly connected to one side of the electric push rod (43). A limiting groove (45) is opened on the top of the test platform (3). A through hole (46) is opened in the inner cavity of the limiting groove (45). A connecting pipe (47) is connected to the bottom of the test platform (3).

2. The safety valve sealing performance testing device according to claim 1, characterized in that: An air supply device (5) is fixedly connected to the top of the base plate (1). The air supply device (5) includes a fixed base (51). The bottom of the fixed base (51) is fixedly connected to the base plate (1). An air pump (52) is fixedly connected to the top of the fixed base (51). A hose (53) is connected to one side of the air pump (52). A connector (54) is connected to one side of the hose (53).

3. The safety valve sealing performance testing device according to claim 1, characterized in that: Mounting plates (6) are fixedly connected to both sides of the top of the test bench (3). A pressure detection mechanism (7) is fixedly connected to the top of the mounting plate (6). The pressure detection mechanism (7) includes a connecting plate (71). The bottom of the connecting plate (71) is fixedly connected to the mounting plate (6). A cylinder (72) is fixedly connected to the top of the connecting plate (71). A sealing cover (73) is fixedly connected to the bottom of the cylinder (72). A pressure gauge (74) is provided on the surface of the sealing cover (73).

4. The safety valve sealing performance testing device according to claim 1, characterized in that: A slide rod (8) is fixedly connected to the opposite side of the side plate (42), and the top surface of the slide rod (8) is movably connected to the clamping plate (44).

5. The safety valve sealing performance testing device according to claim 1, characterized in that: The top of the test bench (3) is provided with a sealing sleeve (9), which is embedded in the inner cavity of the limiting groove (45).

6. The safety valve sealing performance testing device according to claim 2, characterized in that: The bottom of the air pump (52) is fixedly connected to a support base (10), and the bottom of the support base (10) is fixedly connected to a fixed base (51).

7. The safety valve sealing performance testing device according to claim 1, characterized in that: The surface of the connecting pipe (47) is provided with a control valve (11), which is a manual valve.

8. The safety valve sealing performance testing device according to claim 1, characterized in that: A buffer pad is provided on one side of the clamp (44), and the buffer pad has an arc-shaped structure.

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