Valve high-temperature sealing test device

Abstract

The utility model relates to a valve high temperature sealing test device, which belongs to the valve test field, and comprises a test box, the back wall of the inner cavity of the test box is provided with a test mechanism convenient to carry out a high temperature sealing test on a valve, and the inner bottom wall of the test box is provided with an adjusting mechanism convenient to adjust and install the valve test. According to the valve high-temperature sealing test device, the test mechanism is arranged, the valve needing to be tested is connected with the conveying pipe and the plugging pipe through the adjusting mechanism, the high-temperature piece can generate high-temperature steam, the high-temperature steam is conveyed to a valve test area from the pressure tank through the air outlet pipe, the plugging pipe is used for sealing one end of the valve, and a sealing system is established; the internal pressure of the valve is displayed through the valve pressure gauge, and whether the valve can bear the expected pressure at high temperature is judged, so that the sealing performance of the valve is evaluated, and the pressure in the conveying process is monitored through the conveying pressure gauge, so that the valve pressure gauge is compared to further judge the sealing performance of the valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valve testing, in particular to a high-temperature sealing testing device for valves. Background Art

[0002] Valves are devices used to control the flow of fluids in industrial and civil systems. They are widely used in pipeline systems to regulate, open or close the flow of media (such as water, oil, steam, gas, etc.). Tests are conducted to verify whether the valves meet the design specifications and quality standards to ensure that they can work reliably in actual applications. The valve high-temperature sealing test device is a device specifically used to test the sealing performance of valves under high temperature conditions. This device is essential to ensure the reliability and safety of valves under extreme temperature conditions.

[0003] For example, a large-caliber valve high-temperature sealing test device disclosed in Chinese patent announcement number (CN205404060U) has a gas storage tank connected to an air compression station or an air compression pump through a first shut-off valve, and the gas outlet of the gas storage tank is connected to a pressure-stabilizing tank in an electric heating room through an air pipeline. A pressure test plate is arranged behind the pressure-stabilizing tank, and a tested valve is arranged between the pressure-stabilizing tank and the pressure test plate, and the pressure-stabilizing tank, the pressure test plate and the tested valve are connected to form a cavity; electric heaters are arranged on the six sides of the upper, lower, left, right, front and rear of the electric heating room; a second shut-off valve and a regulating valve are arranged on the air pipeline, and the second shut-off valve is located in front of the regulating valve; a first safety valve, a first pressure sensor and a first temperature sensor are arranged on the gas storage tank; a second safety valve, a second pressure sensor and a second temperature sensor are arranged on the pressure-stabilizing tank; a relief valve is arranged on the pressure test plate; the tested valve is connected to a driving device for driving the tested valve to open and close. The utility model has a reasonable structure and improves the working reliability of the valve.

[0004] However, as in the above patent, there is still a problem of poor sealing test effect for the internal transportation of high-temperature and high-pressure media in the valve. For example, in the above patent, a high-temperature environment is heated by an external electric heater, and the sealing effect of the valve in this environment is tested. The valve is mainly used to control the opening and closing of the internal medium. The existing technology is not convenient for detecting the sealing effect when the high-temperature medium is transported internally. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a valve high-temperature sealing test device, which has the advantages of good internal high-temperature sealing test effect, etc., and solves the problem in the prior art that the sealing test effect of the internal high-temperature and high-pressure medium transported by the valve is poor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve high temperature sealing test device, comprising a test box, the back wall of the inner cavity of the test box is provided with a test mechanism for facilitating high temperature sealing test of the valve, and the inner bottom wall of the test box is provided with an adjustment mechanism for facilitating adjustment of the installed valve test;

[0007] The testing mechanism includes a testing box, a delivery pipe, a blocking pipe, a pressure probe, a valve pressure gauge, a delivery pressure gauge and a high-temperature component. The testing box is fixed to the back wall of the inner cavity of the testing box. A connecting hole is provided on the left inner wall of the testing box, and the delivery pipe is fixed to the inner wall of the connecting hole. The blocking pipe is fixed to the right inner wall of the testing box. The pressure probe is horizontally fixed to the inner wall of the blocking pipe. The valve pressure gauge is fixed to the right side of the upper surface of the testing box, and the bottom end of the valve pressure gauge is fixed to the pressure probe. The delivery pressure gauge is fixed to the outside of the delivery pipe. The high-temperature component is arranged on the left side of the testing box to generate high-temperature steam to enter the valve for a high-temperature sealing test.

[0008] Furthermore, the high-temperature component includes a pressure tank, an electric heating rod, an air pump, an exhaust pipe and an exhaust pipe. The pressure tank is fixed to the left side of the test box, the electric heating rod is horizontally fixed between the left and right inner walls of the pressure tank, the air pump is fixed to the upper surface of the pressure tank, one end of the exhaust pipe is connected to the air inlet end of the air pump, and the other end of the exhaust pipe passes through and extends to the inner top wall of the pressure tank, one end of the exhaust pipe is connected to the air outlet end of the air pump, and the other end of the exhaust pipe is connected to the outside of the delivery pipe.

[0009] Furthermore, a controller is fixed to the right inner wall of the test box, and a stop valve is fixed to the outer side of the delivery pipe.

[0010] Furthermore, the number of the electric heating rods is not less than two, and they are evenly distributed between the left and right inner walls of the pressure tank.

[0011] Furthermore, the adjusting mechanism includes an adjusting cylinder, a push plate, a valve support seat and a test valve, the adjusting cylinder is fixed to the inner bottom wall of the test box, the push plate is fixed to the outer side of the adjusting cylinder output shaft, the valve support seat is fixed to the upper surface of the push plate, and the test valve is placed inside the valve support seat.

[0012] Furthermore, the cross-sectional shape of the valve support seat is U-shaped, and the distance between the front and rear sides of the valve support seat is equal to the width of the test valve.

[0013] Furthermore, a conveying hole is provided on the inner bottom wall of the detection box, and the output shaft of the regulating cylinder is slidably connected to the inner wall of the conveying hole.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The high-temperature sealing test device for valves is equipped with a test mechanism. The valves to be tested are connected to the delivery pipe and the plugging pipe respectively through the adjustment mechanism. The high-temperature parts can generate high-temperature steam and deliver the high-temperature steam from the pressure tank to the valve test area through the outlet pipe. The plugging pipe is used to close one end of the valve to create a closed system for testing the sealing performance of the valve. The pressure inside the valve is displayed by the valve pressure gauge to determine whether the valve can withstand the expected pressure under high temperature, thereby evaluating its sealing performance. The delivery pressure gauge is installed on the outside of the delivery pipe to monitor the pressure during the delivery process to ensure the stability of steam delivery, so as to further determine the valve sealing performance by comparing the valve pressure gauge.

[0016] 2. The valve high-temperature sealing test device is equipped with an adjusting mechanism. By adjusting the extension and contraction of the cylinder, the position of the valve support seat can be adjusted, thereby adjusting the position of the test valve. The valve support seat is used to support the test valve to ensure that it is stably installed in the appropriate position during the test. The valve can be easily installed and fixed through the adjusting mechanism to conduct a sealing performance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the test mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the plugging pipe of the utility model;

[0020] Figure 4 It is a schematic diagram of the adjustment mechanism of the utility model.

[0021] In the figure: 1 test box, 2 test mechanism, 21 detection box, 22 delivery pipe, 23 plugging pipe, 24 pressure probe, 25 valve pressure gauge, 26 delivery pressure gauge, 27 high temperature parts, 271 pressure tank, 272 electric heating rod, 273 air pump, 274 exhaust pipe, 275 outlet pipe, 28 stop valve, 3 adjustment mechanism, 31 adjustment cylinder, 32 push plate, 33 valve support seat, 34 test valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1A valve high temperature sealing test device in this embodiment includes a test box 1. The back wall of the inner cavity of the test box 1 is provided with a test mechanism 2 for facilitating high temperature sealing test of the valve, and the inner bottom wall of the test box 1 is provided with an adjustment mechanism 3 for facilitating adjustment of the installed valve test.

[0024] See also Figure 2-3 In order to perform a high-temperature sealing test on the valve, the test mechanism 2 in this embodiment includes a test box 21, a delivery pipe 22, a plugging pipe 23, a pressure probe 24, a valve pressure gauge 25, a delivery pressure gauge 26 and a high-temperature component 27. The test box 21 is fixed to the back wall of the inner cavity of the test box 1. A connecting hole is opened on the left inner wall of the test box 21, and the delivery pipe 22 is fixed to the inner wall of the connecting hole. The plugging pipe 23 is fixed to the right inner wall of the test box 21. The valve to be tested is connected to the delivery pipe 22 and the plugging pipe 23 respectively through the adjustment mechanism 3. The pressure probe 24 is horizontally fixed to the inner wall of the plugging pipe 23. The delivery pipe 22 is connected to the valve to deliver high-temperature steam to the valve, and the plugging pipe 23 is used to close one end of the valve to create a closed system for testing the installed valve. Sealing performance, the valve pressure gauge 25 is fixed to the right side of the upper surface of the detection box 21, and the bottom end of the valve pressure gauge 25 is fixed to the pressure probe 24. When the sealing tube 23 is connected to the valve, the pressure probe 24 will be extended into the valve to monitor the pressure inside the valve in real time, and the pressure inside the valve is displayed by the valve pressure gauge 25 to judge whether the valve can withstand the expected pressure under high temperature, so as to evaluate its sealing performance. The delivery pressure gauge 26 is fixed to the outside of the delivery pipe 22. The delivery pressure gauge 26 is installed on the outside of the delivery pipe 22 to monitor the pressure during the delivery process to ensure the stability of steam delivery, so as to compare the valve pressure gauge 25 to further judge the valve sealing performance. The high-temperature component 27 is arranged on the left side of the test box 1 to generate high-temperature steam to enter the valve for high-temperature sealing test.

[0025] The high temperature component 27 includes a pressure tank 271, an electric heating rod 272, an air pump 273, an exhaust pipe 274 and an exhaust pipe 275. The pressure tank 271 is fixed to the left side of the test box 1, the electric heating rod 272 is horizontally fixed between the left and right inner walls of the pressure tank 271, the air pump 273 is fixed to the upper surface of the pressure tank 271, the pressure tank 271 is used as a steam generator, and water is stored inside. The electric heating rod 272 is used to heat the medium in the tank to generate high-temperature steam, one end of the exhaust pipe 274 is connected to the air inlet end of the air pump 273, and the other end of the exhaust pipe 274 passes through and extends to the inner top wall of the pressure tank 271, one end of the exhaust pipe 275 is connected to the exhaust end of the air pump 273, and the other end of the exhaust pipe 275 is connected to the outside of the delivery pipe 22, the air pump 273 sucks the high-temperature steam generated in the pressure tank 271 through the exhaust pipe 274, and delivers the high-temperature steam from the pressure tank 271 to the valve test area through the exhaust pipe 275.

[0026] In this embodiment, a controller is fixed to the right inner wall of the test box 1, and a stop valve 28 is fixed to the outer side of the delivery pipe 22. The stop valve 28 is used to control the inflow and outflow of steam so as to cut off or connect the steam supply when necessary. The number of the electric heating rods 272 is not less than two, and they are evenly distributed between the left and right inner walls of the pressure tank 271.

[0027] See also Figure 4 In order to adjust and install the valve test, the adjustment mechanism 3 in this embodiment includes an adjustment cylinder 31, a push plate 32, a valve support seat 33 and a test valve 34. The adjustment cylinder 31 is fixed to the inner bottom wall of the test box 1, the push plate 32 is fixed to the outer side of the output shaft of the adjustment cylinder 31, and the valve support seat 33 is fixed to the upper surface of the push plate 32. By adjusting the extension and contraction of the cylinder 31, the position of the valve support seat 33 can be adjusted, and then the position of the test valve 34 can be adjusted. The test valve 34 is placed inside the valve support seat 33. The valve support seat 33 is used to support the test valve 34 to ensure that it is stably installed in the appropriate position during the test.

[0028] In this embodiment, the cross-sectional shape of the valve support seat 33 is U-shaped, and the distance between the front and rear sides of the valve support seat 33 is equal to the width of the test valve 34. A conveying hole is opened on the inner bottom wall of the detection box 21, and the output shaft of the adjusting cylinder 31 is slidably connected to the inner wall of the conveying hole. The output shaft of the adjusting cylinder 31 is slidably connected to the inner wall of the conveying hole, which enables the adjusting cylinder 31 to smoothly perform the adjustment action and accurately control the position of the valve. The test valve 34 is placed inside the valve support seat 33, and the valve can be conveniently installed and fixed through the adjusting mechanism 3 to perform a sealing performance test.

[0029] The working principle of the above embodiment is:

[0030] (1) When the valve is subjected to a high temperature sealing test, the valve to be tested is connected to the delivery pipe 22 and the plugging pipe 23 respectively through the adjusting mechanism 3. The pressure tank 271 is used as a steam generator and stores water inside. The electric heating rod 272 is used to heat the medium in the tank to generate high temperature steam. The air pump 273 sucks the high temperature steam generated in the pressure tank 271 through the exhaust pipe 274 and delivers the high temperature steam from the pressure tank 271 to the valve test area through the exhaust pipe 275. The delivery pipe 22 is further connected to the valve to deliver the high temperature steam into the valve, and the plugging pipe 23 is used to close one end of the valve to create a closed system. It is convenient to test the sealing performance of the installed valve. When the sealing tube 23 is connected to the valve, the pressure probe 24 will be extended into the valve to monitor the pressure inside the valve in real time. The pressure inside the valve is displayed by the valve pressure gauge 25 to determine whether the valve can withstand the expected pressure under high temperature, thereby evaluating its sealing performance. The delivery pressure gauge 26 is installed on the outside of the delivery pipe 22 to monitor the pressure during the delivery process to ensure the stability of steam delivery, so as to further determine the valve sealing performance by comparing with the valve pressure gauge 25. The stop valve 28 is used to control the inflow and outflow of steam to cut off or connect the steam supply when necessary.

[0031] (2) When adjusting and installing the valve for testing, the position of the valve support seat 33 can be adjusted by adjusting the extension and contraction of the cylinder 31, thereby adjusting the position of the test valve 34. The valve support seat 33 is used to support the test valve 34 to ensure that it is stably installed in the appropriate position during the test. The output shaft of the adjusting cylinder 31 is slidably connected to the inner wall of the conveying hole, which enables the adjusting cylinder 31 to smoothly perform the adjustment action and accurately control the position of the valve. The test valve 34 is placed inside the valve support seat 33. The valve can be conveniently installed and fixed through the adjusting mechanism 3 to perform a sealing performance test.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A valve high temperature sealing test device, comprising a test box (1), characterized in that: The back wall of the inner cavity of the test box (1) is provided with a test mechanism (2) for facilitating high-temperature sealing tests on valves, and the inner bottom wall of the test box (1) is provided with an adjustment mechanism (3) for facilitating adjustment of the installed valve test; The test mechanism (2) comprises a test box (21), a delivery pipe (22), a plugging pipe (23), a pressure probe (24), a valve pressure gauge (25), a delivery pressure gauge (26) and a high-temperature component (27). The test box (21) is fixed to the back wall of the inner cavity of the test box (1). A connection hole is opened on the left inner wall of the test box (21), and the delivery pipe (22) is fixed to the inner wall of the connection hole. The plugging pipe (23) is fixed to the right inner wall of the test box (21). The pressure probe (24) is horizontally fixed to the inner wall of the plugging pipe (23). The valve pressure gauge (25) is fixed to the right side of the upper surface of the test box (21), and the bottom end of the valve pressure gauge (25) is fixed to the pressure probe (24). The delivery pressure gauge (26) is fixed to the outer side of the delivery pipe (22). The high-temperature component (27) is arranged on the left side of the test box (1) to generate high-temperature steam to enter the valve for high-temperature sealing test.

2. A valve high temperature sealing test device according to claim 1, characterized in that: The high-temperature component (27) comprises a pressure tank (271), an electric heating rod (272), an air pump (273), an air extraction pipe (274) and an air outlet pipe (275); the pressure tank (271) is fixed to the left side of the test box (1); the electric heating rod (272) is horizontally fixed between the left and right inner walls of the pressure tank (271); the air pump (273) is fixed to the upper surface of the pressure tank (271); one end of the air extraction pipe (274) is connected to the air inlet end of the air pump (273); the other end of the air extraction pipe (274) passes through and extends to the inner top wall of the pressure tank (271); one end of the air outlet pipe (275) is connected to the air outlet end of the air pump (273); and the other end of the air outlet pipe (275) is connected to the outer side of the delivery pipe (22).

3. A valve high temperature sealing test device according to claim 1, characterized in that: A controller is fixed to the right inner wall of the test box (1), and a stop valve (28) is fixed to the outer side of the delivery pipe (22).

4. A valve high temperature sealing test device according to claim 2, characterized in that: The number of the electric heating rods (272) is not less than two and they are evenly distributed between the left and right inner walls of the pressure tank (271).

5. A valve high temperature sealing test device according to claim 1, characterized in that: The regulating mechanism (3) comprises a regulating cylinder (31), a push plate (32), a valve support seat (33) and a test valve (34); the regulating cylinder (31) is fixed to the inner bottom wall of the test box (1); the push plate (32) is fixed to the outer side of the output shaft of the regulating cylinder (31); the valve support seat (33) is fixed to the upper surface of the push plate (32); and the test valve (34) is placed inside the valve support seat (33).

6. A valve high temperature sealing test device according to claim 5, characterized in that: The cross-sectional shape of the valve support seat (33) is U-shaped, and the distance between the front and rear sides of the valve support seat (33) is equal to the width of the test valve (34).

7. A valve high temperature sealing test device according to claim 5, characterized in that: The inner bottom wall of the detection box (21) is provided with a conveying hole, and the output shaft of the regulating cylinder (31) is slidably connected to the inner wall of the conveying hole.

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