Performance detection device for hydrogen-doped natural gas rubber part and use method of performance detection device

Abstract

The invention discloses a performance detection device for a hydrogen-doped natural gas rubber part, which comprises a sealing tank, the sealing tank is provided with a water flow inlet and a water flow outlet, a measuring tank is arranged in the sealing tank, the measuring tank is provided with a first opening and a second opening, the first opening is communicated with the outside of the sealing tank through a first gas pipeline, and the second opening is communicated with the outside of the sealing tank through a second gas pipeline. The second opening is communicated to the outside of the sealing tank through a second gas pipeline, a bearing platform for placing a rubber part is arranged in the measuring tank, and a heater is arranged between the outer wall of the measuring tank and the inner wall of the sealing tank. The invention further discloses a using method of the device. According to the performance detection device for the hydrogen-doped natural gas rubber part and the use method of the performance detection device, the rubber part can make full contact with hydrogen-doped natural gas, and the concentration, pressure and temperature of the hydrogen-doped natural gas can be controlled within the required range in the contact process; the performance detection work of the rubber part can be subsequently carried out.

Description

Technical Field

[0001] The invention relates to the field of natural gas, and in particular to a performance detection device for hydrogen-doped natural gas rubber parts and a use method thereof. Background Art

[0002] Natural gas hydrogen blending technology blends hydrogen into natural gas at a certain volume ratio and uses existing natural gas pipelines for transportation. This technology provides technical support for the long-distance transportation of hydrogen energy. Hydrogen-blended natural gas can not only improve the quality of natural gas, but also achieve low-cost long-distance transportation of hydrogen, which is of great significance to promoting energy conservation, carbon reduction and green development in the energy industry. During the transportation of hydrogen-blended natural gas, rubber parts will come into contact with hydrogen-blended natural gas. There is currently no relevant test equipment to test the performance of rubber parts in the environment of hydrogen-blended natural gas. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a performance testing device for hydrogen-doped natural gas rubber parts and a method of using the same, which can fully bring the rubber parts into contact with the hydrogen-doped natural gas, and during the contact process can control the concentration, pressure and temperature of the hydrogen-doped natural gas within the required range, so as to carry out subsequent performance testing of the rubber parts.

[0004] The performance detection device for hydrogen-doped natural gas rubber parts in the present invention comprises a sealed tank, wherein the sealed tank is provided with a water inlet and a water outlet, wherein a measuring tank is provided inside the sealed tank, wherein a first opening and a second opening are provided on the measuring tank, wherein the first opening is connected to one end of a first gas pipeline, wherein the other end of the first gas pipeline extends to the outside of the sealed tank through the sealed tank, wherein the second opening is connected to one end of a second gas pipeline, wherein the other end of the second gas pipeline extends to the outside of the sealed tank through the sealed tank, wherein a bearing platform for placing rubber parts is provided inside the measuring tank, and a heater is provided between the outer wall of the measuring tank and the inner wall of the sealed tank.

[0005] In the performance testing device for hydrogen-doped natural gas rubber parts of the present invention, the bearing platform comprises a bracket fixed on the inner wall of the measuring tank, the bracket is provided with a support plate for placing the rubber parts, and the support plate is made of a mesh.

[0006] The performance testing device for hydrogen-doped natural gas rubber parts in the present invention, wherein the bearing platform includes a containing cylinder, two cylinder openings of the containing cylinder are respectively provided with a first cylinder cover and a second cylinder cover, the outer side of the first cylinder cover is provided with a first rotating shaft, the outer side of the second cylinder cover is provided with a second rotating shaft, an explosion-proof motor is provided on the inner wall of the measuring tank, the output shaft of the explosion-proof motor is connected to the first rotating shaft, the second rotating shaft is rotatably mounted on the inner wall of the measuring tank, the containing cylinder is made of a mesh, a plurality of wind plates arranged along the axial direction of the containing cylinder are provided on the outer wall of the containing cylinder, the plurality of wind plates are evenly spaced along the circumference of the containing cylinder, an opening is provided on the cylinder wall of the containing cylinder, a cover plate is provided on the opening, and the cover plate is made of a mesh.

[0007] The performance testing device for hydrogen-doped natural gas rubber parts in the present invention, wherein the bearing platform includes a support shaft arranged in a vertical direction, the lower end of the support shaft is connected to the output shaft of an explosion-proof motor, the explosion-proof motor is arranged on the inner bottom wall of the measuring tank, the support shaft is provided with a receiving groove arranged in a horizontal direction, the support shaft is also provided with a fan blade, and the receiving groove is made of a mesh.

[0008] The performance testing device for hydrogen-doped natural gas rubber parts in the present invention, wherein the containing tank comprises a circular tank bottom plate arranged in the horizontal direction, a baffle plate arranged along the circumference of the tank bottom plate is provided at the edge of the upper side surface of the tank bottom plate, the center of the tank bottom plate is sleeved on the support shaft, the tank bottom plate and the baffle plate are both made of mesh, and fan blades are provided on the support shafts above and below the containing tank.

[0009] In the performance detection device for hydrogen-doped natural gas rubber parts of the present invention, a first temperature sensor, a second temperature sensor, a pressure sensor and a concentration sensor are provided on the outer wall of the sealed tank, the detection end of the first temperature sensor extends between the inner wall of the sealed tank and the outer wall of the measuring tank, and the detection ends of the second temperature sensor, the pressure sensor and the concentration sensor all extend to the interior of the measuring tank.

[0010] The method for using the performance detection device for hydrogen-doped natural gas rubber parts in the present invention comprises the following steps:

[0011] Open the sealing tank and the measuring tank in turn, place the rubber parts to be tested on the load-bearing platform, and then close the measuring tank and the sealing tank in turn.

[0012] Close the water outlet of the sealed tank, and inject water into the sealed tank from the water inlet to make the measuring tank completely immersed in water.

[0013] Close the second gas pipeline, and introduce hydrogen-blended natural gas into the measuring tank through the first gas pipeline. At the same time, start the heater and monitor the concentration, pressure and temperature of the hydrogen-blended natural gas in the measuring tank. When the concentration, pressure and temperature reach the required values, stop introducing hydrogen-blended natural gas into the measuring tank and keep the concentration, pressure and temperature of the hydrogen-blended natural gas in the measuring tank unchanged.

[0014] After a period of time, connect the other end of the second gas pipeline to the gas recovery device and open the second gas pipeline. Then, introduce nitrogen into the measuring tank through the first gas pipeline. After the hydrogen-blended natural gas in the measuring tank is completely replaced by nitrogen, open the sealing tank and the measuring tank in turn, and take out the rubber parts for performance testing.

[0015] In the above-mentioned method of use of the present invention, the specific step of placing the rubber member to be tested on the bearing platform is: placing the rubber member on the support plate, and fixing the rubber member on the support plate by fasteners.

[0016] The above-mentioned method of use in the present invention, wherein the specific steps of placing the rubber part to be tested on the supporting platform are: opening the cover of the accommodating tube, placing the rubber part in the tube cavity of the accommodating tube through the opening, and then covering the opening with the cover, and then turning on the explosion-proof motor to allow the accommodating tube to rotate at a constant speed of 1r / min.

[0017] The above-mentioned method of use in the present invention, wherein the specific step of placing the rubber part to be tested on the bearing platform is: placing the rubber part in the receiving groove, then turning on the explosion-proof motor, and allowing the receiving groove and the fan blades to rotate at a uniform speed of 1r / min.

[0018] The performance testing device and the use method of the hydrogen-doped natural gas rubber parts of the present invention are different from the prior art in that the rubber parts to be tested are placed on the bearing platform in the measuring tank, water is injected between the measuring tank and the sealing tank, and then the hydrogen-doped natural gas is introduced into the measuring tank. The temperature of the water between the measuring tank and the sealing tank can be heated by the heater, and then the water can heat the hydrogen-doped natural gas in the measuring tank. After the concentration, pressure and temperature of the hydrogen-doped natural gas reach the required values, the hydrogen-doped natural gas is stopped from being introduced into the measuring tank, and the concentration, pressure and temperature of the hydrogen-doped natural gas in the measuring tank are kept unchanged. After a period of time, nitrogen is introduced into the measuring tank to replace the previous hydrogen-doped natural gas. After the replacement is completed, the rubber parts in the measuring tank are taken out and the performance is tested. It can be seen that the rubber parts can be fully contacted with the hydrogen-doped natural gas on the bearing platform in the measuring tank, and the concentration, pressure and temperature of the hydrogen-doped natural gas can be controlled within the required range during the contact process, so as to carry out the performance testing of the rubber parts in the subsequent process.

[0019] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a first embodiment of a performance detection device for hydrogen-doped natural gas rubber parts in the present invention;

[0021] Figure 2 It is a structural schematic diagram of a second embodiment of a performance detection device for hydrogen-doped natural gas rubber parts in the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the accommodating tube in the present invention;

[0023] Figure 4 This is a schematic structural diagram of Embodiment 3 of a performance detection device for hydrogen-doped natural gas rubber parts in the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the containing tank in the present invention. DETAILED DESCRIPTION

[0025] Embodiment 1

[0026] like Figure 1 As shown, the performance detection device for hydrogen-doped natural gas rubber parts in the present invention includes a sealed tank 12, the sealed tank 12 is provided with a water inlet and a water outlet, the sealed tank 12 is provided with a measuring tank 5 inside, the measuring tank 5 is provided with a first opening 41 and a second opening 42, the first opening 41 is connected to one end of a first gas pipeline 1, the other end of the first gas pipeline 1 passes through the sealed tank 12 and extends to the outside of the sealed tank 12, the second opening 42 is connected to one end of a second gas pipeline 8, the other end of the second gas pipeline 8 passes through the sealed tank 12 and extends to the outside of the sealed tank 12, a bearing platform for placing rubber parts is provided inside the measuring tank 5, and a heater 15 is provided between the outer wall of the measuring tank 5 and the inner wall of the sealed tank 12.

[0027] The sealed tank 12 includes a first tank body 13 in the shape of a barrel and a first tank cover 14 in the shape of a round barrel. The first tank cover 14 is sealed and installed at the barrel mouth of the first tank body 13. The connection between the first tank cover 14 and the first tank body 13 can be threaded, that is, the first tank cover 14 is threadedly connected to the barrel mouth of the first tank body 13. In order to enhance the sealing between the two, an annular sealing ring can also be arranged between the two. In addition, the first tank cover 14 can also adopt a quick-opening blind plate structure, which can also achieve a sealed connection with the first tank body 13. The water inlet and the water outlet are both arranged on the barrel wall of the first tank body 13. More specifically, the water inlet is arranged near the barrel mouth of the first tank body 13, and the water outlet is arranged near the barrel bottom of the first tank body 13. Water can be injected into the sealed tank 12 through the water inlet, and the water in the sealed tank 12 can be discharged through the water outlet.

[0028] The measuring tank 5 includes a second tank body 4 in the shape of a barrel and a second tank cover 3 in the shape of a round shape, and the second tank cover 3 is sealed and installed at the barrel mouth of the second tank body 4. The connection method between the second tank cover 3 and the second tank body 4 can be threaded connection, that is, the second tank cover 3 is threadedly connected to the barrel mouth of the second tank body 4. In order to enhance the sealing between the two, an annular sealing ring can also be arranged between the two. In addition, the second tank cover 3 can also adopt a quick-opening blind plate structure, which can also achieve a sealed connection with the second tank body 4. The first opening 41 and the second opening 42 are both arranged on the barrel wall of the second tank body 4, one of the two openings is arranged close to the barrel mouth of the second tank body 4, and the other opening is arranged close to the barrel bottom of the second tank body 4.

[0029] The measuring tank 5 is installed in the first tank body 13 of the sealed tank 12 through a support frame (not shown in the figure). The barrel wall of the first tank body 13 is provided with a third opening for accommodating the first air pipeline 1 and a fourth opening for accommodating the second air pipeline 8. The first opening 41 of the measuring tank 5 is connected to one end of the first air pipeline 1, and the other end of the first air pipeline 1 is sealed through the third opening and extends to the outside of the sealed tank 12. The second opening 42 of the measuring tank 5 is connected to one end of the second air pipeline 8, and the other end of the second air pipeline 8 is sealed through the fourth opening and extends to the outside of the sealed tank 12. The first air pipeline 1 is sealed through the third opening in a manner that: an annular sealing gasket is provided between the first air pipeline 1 and the third opening, the outer ring wall of the annular sealing gasket is sealed and fixed on the third opening, and the first air pipeline 1 is sealed and inserted in the inner ring hole of the annular sealing gasket. The manner in which the second air pipeline 8 is sealed through the fourth opening is the same as the manner in which the first air pipeline 1 is sealed through the third opening, and will not be repeated here.

[0030] The water inlet of the sealed tank 12 is connected to a water inlet pipe 10, on which a water inlet valve 11 is provided; the water outlet is connected to a water outlet pipe 16, on which a water outlet valve 17 is provided. Water can be injected into the sealed tank 12 from the water inlet through the water inlet pipe 10, specifically into the cavity between the inner wall of the sealed tank 12 and the outer wall of the measuring tank 5. When the water fills the cavity, the measuring tank 5 is immersed in water. The heater 15 is also provided in the cavity between the outer wall of the measuring tank 5 and the inner wall of the sealed tank 12, so when the heater 15 is turned on, the water in the cavity can be heated. The heater 15 can be a resistance wire heater.

[0031] The first gas pipeline 1 is provided with a first gas valve 2, and the second gas pipeline 8 is provided with a second gas valve 9. After the second gas pipeline is closed by the second gas valve 9, hydrogen-blended natural gas can be introduced into the measuring tank 5 through the first gas pipeline 1; of course, the first gas pipeline 1 can be closed by the first gas valve 2, and then hydrogen-blended natural gas can be introduced into the measuring tank 5 through the second gas pipeline 8. After the water between the outer wall of the measuring tank 5 and the inner wall of the sealing tank 12 is heated by the heater 15, the water can heat the hydrogen-blended natural gas in the measuring tank 5.

[0032] The performance testing device for hydrogen-doped natural gas rubber parts in the present invention, wherein the bearing platform includes a bracket 6 fixed on the inner wall of the measuring tank 5, the bracket 6 is fixed on the inner barrel bottom of the second tank body 4, and a support plate 7 for placing the rubber parts is provided on the bracket 6, the support plate 7 is made of a mesh, and the mesh is a corrosion-resistant steel wire mesh, so that after the rubber parts are placed on the support plate 7, the hydrogen-doped natural gas can contact the rubber parts through the steel wire mesh, and then all parts of the rubber parts can be fully in contact with the hydrogen-doped natural gas. The number of the support plates 7 can be set according to actual conditions. In this embodiment, the number of the support plates 7 is set to three, and the three support plates 7 are arranged in sequence from top to bottom along the bracket 6.

[0033] In the performance detection device for hydrogen-doped natural gas rubber parts of the present invention, a first temperature sensor 18, a second temperature sensor 20, a pressure sensor 21 and a concentration sensor 19 are provided on the outer wall of the sealed tank 12, the detection end of the first temperature sensor 18 extends between the inner wall of the sealed tank 12 and the outer wall of the measuring tank 5, and the detection ends of the second temperature sensor 20, the pressure sensor 21 and the concentration sensor 19 all extend to the interior of the measuring tank 5.

[0034] The first temperature sensor 18 can monitor the temperature of water between the outer wall of the measuring tank 5 and the inner wall of the sealing tank 12 , and the second temperature sensor 20 , the pressure sensor 21 and the concentration sensor 19 can monitor the temperature, pressure and concentration of the hydrogen-blended natural gas in the measuring tank 5 , respectively.

[0035] In this embodiment, the first opening 41 is arranged near the barrel mouth of the second tank body 4 of the measuring tank 5, and the second opening 42 is arranged near the barrel bottom of the second tank body 4 of the measuring tank 5. In actual use, more than two sealed tanks 12 can be connected in series. The following is an explanation of two sealed tanks 12 connected in series: Figure 1As shown, the second gas pipeline 8 of the left sealed tank 12 is connected to the second gas pipeline 8 of the right sealed tank 12, so that when the first gas pipeline 1 of the right sealed tank 12 is closed (by closing the first gas valve 2 on the first gas pipeline 1), the first gas pipeline 1 of the left sealed tank 12 is opened (by opening the first gas valve 2 on the first gas pipeline 1), and the second gas pipelines 8 of the two sealed tanks 12 are opened (by opening the second gas valves 9 on the two second gas pipelines 8), hydrogen-blended natural gas can be injected into the left measuring tank 5 and the right measuring tank 5 in turn through the first gas pipeline 1 on the left sealed tank 12. Of course, the first gas pipeline 1 of the left sealed tank 12 can also be closed (by closing the first gas valve 2 on the first gas pipeline 1), and then the first gas pipeline 1 of the right sealed tank 12 can be opened (by opening the first gas valve 2 on the first gas pipeline 1) and the second gas pipelines 8 of the two sealed tanks 12 can be opened (by opening the second gas valves 9 on the two second gas pipelines 8), and then the hydrogen-blended natural gas is sequentially injected into the right measuring tank 5 and the left measuring tank 5 through the first gas pipeline 1 of the right sealed tank 12. As for the water pipelines of the two sealed tanks 12, they are not connected, that is, the two sealed tanks 12 are separately filled with water.

[0036] The manner of connecting three or more sealed tanks 12 in series is the same as the manner of connecting two sealed tanks 12 in series, and will not be described in detail herein.

[0037] like Figure 1 As shown, the method for using the performance detection device for hydrogen-doped natural gas rubber parts in the present invention comprises the following steps:

[0038] (1) Open the sealing tank 12 and the measuring tank 5 in sequence, place the rubber part to be tested on the bearing platform, and then close the measuring tank 5 and the sealing tank 12 in sequence.

[0039] (2) Close the water outlet of the sealed tank 12, and inject water into the sealed tank 12 from the water inlet of the sealed tank 12 so that the measuring tank 5 is completely immersed in water.

[0040] (3) The second gas pipeline 8 is closed, and the hydrogen-blended natural gas is introduced into the measuring tank 5 through the first gas pipeline 1. At the same time, the heater 15 is started to monitor the concentration, pressure and temperature of the hydrogen-blended natural gas in the measuring tank 5. When the concentration, pressure and temperature reach the required values, the introduction of the hydrogen-blended natural gas into the measuring tank 5 is stopped, and the concentration, pressure and temperature of the hydrogen-blended natural gas in the measuring tank 5 are kept unchanged.

[0041] (4) After a period of time, the other end of the second gas pipeline 8 is connected to the gas recovery device and the second gas pipeline 8 is opened. Then, nitrogen is introduced into the measuring tank 5 through the first gas pipeline 1. After the hydrogen-blended natural gas in the measuring tank 5 is completely replaced by nitrogen, the sealing tank 12 and the measuring tank 5 are opened in turn, and the rubber component is taken out for performance testing.

[0042] In the above-mentioned method of use of the present invention, in step (1), the specific steps of placing the rubber part to be tested on the bearing platform are: placing the rubber part on the support plate 7 and fixing the rubber part on the support plate 7 by fasteners (such as iron wire).

[0043] In the above step (1), when opening the sealed can 12, the first can cover 14 is separated from the first can body 13 to open the sealed can 12, and conversely, when the first can cover 14 is reinstalled at the barrel mouth of the first can body 13, the sealed can 12 can be closed. When opening the measuring can 5, the second can cover 3 is separated from the second can body 4 to open the measuring can 5, and conversely, when the second can cover 3 is reinstalled at the barrel mouth of the second can body 4, the measuring can 5 can be closed.

[0044] In the above step (2), when water is injected into the sealed tank 12, the water outlet valve 17 on the water outlet pipe 16 is closed to close the water outlet of the sealed tank 12, and then the water inlet valve 11 is opened to inject water into the sealed tank 12 from the water inlet pipe 10 through the water inlet, and the water is injected into the cavity between the outer wall of the measuring tank 5 and the inner wall of the sealed tank 12. When the water fills the cavity or the horizontal plane submerges the measuring tank 5, the water injection can be stopped and the measuring tank 5 is kept completely immersed in water.

[0045] In the above step (3), when the hydrogen-blended natural gas is introduced into the measuring tank 5, the second gas valve 9 is closed to close the second gas pipeline 8, and then the first gas valve 2 is opened to introduce the hydrogen-blended natural gas into the measuring tank 5 through the first gas pipeline 1. At the same time, the heater 15 is started to heat the water between the outer wall of the measuring tank 5 and the inner wall of the sealing tank 12, and the hydrogen-blended natural gas in the measuring tank 5 can be heated after the water is heated. The temperature of the water can be monitored by the first temperature sensor 18, and the temperature, pressure and concentration of the hydrogen-blended natural gas in the measuring tank 5 can be monitored by the second temperature sensor 20, the pressure sensor 21 and the concentration sensor 19, respectively. After the temperature, pressure and concentration of the hydrogen-blended natural gas reach the required values, the introduction of the hydrogen-blended natural gas into the measuring tank 5 is stopped, and the temperature, pressure and concentration of the hydrogen-blended natural gas in the measuring tank 5 are kept unchanged.

[0046] In the above step (4), after a period of time, the period of time refers to the time required to test the rubber parts. The other end of the second gas pipeline 8 is the end not connected to the second opening 42. After the other end of the second gas pipeline 8 is connected to the gas recovery device, the second gas valve 9 is opened to open the second gas pipeline 8, and then nitrogen is introduced into the measuring tank 5 through the first gas pipeline 1 to replace the hydrogen-blended natural gas in the measuring tank 5 with nitrogen. After the hydrogen-blended natural gas in the measuring tank 5 is completely replaced by nitrogen, that is, after there is no danger, the sealing tank 12 and the measuring tank 5 can be opened in turn, and the rubber parts can be taken out for subsequent performance testing. The reason why nitrogen is used to replace the hydrogen-blended natural gas in the measuring tank 5 is for safety considerations.

[0047] The performance testing device and the use method of the hydrogen-doped natural gas rubber parts of the present invention are different from the prior art in that the rubber parts to be tested are placed on the bearing platform in the measuring tank 5 when used, water is injected between the measuring tank 5 and the sealing tank 12, and then the hydrogen-doped natural gas is introduced into the measuring tank 5. The temperature of the water between the measuring tank 5 and the sealing tank 12 can be heated by the heater 15, and then the water can heat the hydrogen-doped natural gas in the measuring tank 5. After the concentration, pressure and temperature of the hydrogen-doped natural gas reach the required values, the hydrogen-doped natural gas is stopped from being introduced into the measuring tank 5, and the concentration, pressure and temperature of the hydrogen-doped natural gas in the measuring tank 5 are kept unchanged. After a period of time, nitrogen is introduced into the measuring tank 5 to replace the previous hydrogen-doped natural gas. After the replacement is completed, the rubber parts in the measuring tank 5 are taken out and the performance can be tested. It can be seen that the rubber parts can be fully contacted with the hydrogen-doped natural gas on the bearing platform in the measuring tank 5, and the concentration, pressure and temperature of the hydrogen-doped natural gas can be controlled within the required range during the contact process, so as to carry out the performance testing of the rubber parts in the subsequent process.

[0048] Embodiment 2

[0049] The performance detection device for hydrogen-doped natural gas rubber parts of this embodiment is different from the performance detection device for hydrogen-doped natural gas rubber parts of the first embodiment in that the structure of the bearing platform is different, as follows: Figure 2 , 3As shown, the bearing platform includes a receiving tube 26, and a first tube cover 29 and a second tube cover are fixedly provided on the two tube openings of the receiving tube 26, respectively. A first rotating shaft 25 is fixedly provided on the outer side of the first tube cover 29, and a second rotating shaft 28 is fixedly provided on the outer side of the second tube cover. An explosion-proof motor 22 is fixedly provided on the inner wall of the measuring tank 5, and an output shaft 23 of the explosion-proof motor 22 is fixedly connected to the first rotating shaft 25 through a coupling 24, and the second rotating shaft 28 is rotatably mounted on the inner wall of the measuring tank 5 through a bearing. The receiving tube 26 is made of a mesh, and a plurality of wind plates 27 arranged along the axial direction of the receiving tube 26 are fixedly provided on the outer wall of the receiving tube 26, and the plurality of wind plates 27 are evenly spaced and arranged along the circumference of the receiving tube 26. An opening 30 is provided on the tube wall of the receiving tube 26, and a cover plate 31 is provided on the opening 30, and the cover plate 31 is made of a mesh.

[0050] The explosion-proof motor 22 is fixedly arranged on the inner barrel wall of the second tank body 4 of the measuring tank 5, and the output shaft 23 of the explosion-proof motor 22 is arranged in the horizontal direction. The axis of the accommodating cylinder 26 is also arranged in the horizontal direction, the first rotating shaft 25 and the second rotating shaft 28 are both arranged coaxially with the accommodating cylinder 26, and the accommodating cylinder 26 is also arranged coaxially with the output shaft 23 of the explosion-proof motor 22. When the explosion-proof motor 22 is turned on, the explosion-proof motor 22 can drive the accommodating cylinder 26 to rotate around its own axis.

[0051] In this embodiment, the accommodating tube 26, the first tube cover 29 and the second tube cover are all made of mesh, and the mesh is a corrosion-resistant steel wire mesh, so that after the rubber member is placed in the accommodating tube 26, the hydrogen-blended natural gas can easily pass through the steel wire mesh and enter the accommodating tube 26, so that all parts of the rubber member can be fully in contact with the hydrogen-blended natural gas. When placing the rubber member in the accommodating tube 26, it is only necessary to remove the cover plate 31 from the opening 30, then place the rubber member from the opening 30 into the accommodating tube 26, and then cover the opening 30 with the cover plate 31 and fix the cover plate 31 to the accommodating tube 26 with a fastener (such as iron wire).

[0052] When the explosion-proof motor 22 drives the accommodating tube 26 to rotate, the rubber part rolls back and forth in the accommodating tube 26, which can further promote that all parts of the rubber part can fully contact with the hydrogen-blended natural gas. In addition, the wind plate 27 fixed on the outer wall of the accommodating tube 26 will also rotate with the accommodating tube 26, so that the wind plate 27 can stir the hydrogen-blended natural gas, prevent the hydrogen and natural gas from being stratified due to being left still, and make the two mixed more evenly, thereby ensuring accurate detection results.

[0053] It should be noted that the above description is that the rubber piece is placed in the accommodating tube 26, but the rubber piece is not fixed in the accommodating tube 26. Therefore, when the accommodating tube 26 rotates, the rubber piece can roll in the accommodating tube 26, and the rolling here means that the rubber piece rolls relative to the accommodating tube 26. Of course, after the rubber piece is placed in the accommodating tube 26, a fastener (such as a wire) can be used to fix the rubber piece in the accommodating tube 26, so that when the accommodating tube 26 rotates, the rubber piece rotates with the accommodating tube 26, and the two are relatively stationary.

[0054] Of course, the cover plate 31 is also made of corrosion-resistant steel wire mesh, which is also conducive to the hydrogen-blended natural gas passing through the steel wire mesh at the cover plate 31 and entering the containing tube 26, so that all parts of the rubber component can be fully in contact with the hydrogen-blended natural gas.

[0055] Since the performance testing device for hydrogen-doped natural gas rubber parts of this embodiment has a different bearing platform structure from the performance testing device for hydrogen-doped natural gas rubber parts of the first embodiment, the use method of the performance testing device for hydrogen-doped natural gas rubber parts of this embodiment is different from the use method of the performance testing device for hydrogen-doped natural gas rubber parts of the first embodiment only in the specific step of placing the rubber parts to be tested on the bearing platform in step (1), as follows:

[0056] In the method of using the performance testing device for hydrogen-doped natural gas rubber parts of this embodiment, the specific steps of placing the rubber parts to be tested on the supporting platform are: opening the cover plate 31 of the accommodating tube 26, placing the rubber parts in the tube cavity of the accommodating tube 26 through the opening 30, and then covering the opening 30 with the cover plate 31, and then turning on the explosion-proof motor 22 to allow the accommodating tube 26 to rotate at a constant speed of 1r / min.

[0057] Embodiment 3

[0058] The performance detection device for hydrogen-doped natural gas rubber parts of this embodiment is different from the performance detection device for hydrogen-doped natural gas rubber parts of the first embodiment in that the structure of the bearing platform is different, as follows: Figure 4 , 5As shown, the bearing platform includes a support shaft 37 arranged in a vertical direction, the lower end of the support shaft 37 is connected to the output shaft 33 of an explosion-proof motor 32, the explosion-proof motor 32 is arranged on the inner bottom wall of the measuring tank 5, the support shaft 37 is provided with a receiving groove 36 arranged in a horizontal direction, the support shaft 37 is also fixed with a fan blade 35, and the receiving groove 36 is made of a mesh. The receiving groove 36 includes a circular groove bottom plate 38 arranged in a horizontal direction, the upper side edge of the groove bottom plate 38 is fixed with a baffle 39 arranged along the circumference of the groove bottom plate 38, the center of the circle of the groove bottom plate 38 is fixedly sleeved on the support shaft 37, the groove bottom plate 38 and the baffle 39 are both made of a mesh, and the support shaft 37 above and below the receiving groove 36 is fixed with a fan blade 35.

[0059] The explosion-proof motor 32 is specifically fixed on the inner bottom of the second tank body 4 of the measuring tank 5 , the output shaft 33 of the explosion-proof motor 32 is arranged vertically upward, and the lower end of the support shaft 37 is fixedly connected to the output shaft 33 of the explosion-proof motor 32 through a coupling 34 .

[0060] A sleeve 40 is fixedly provided at the center of the groove bottom plate 38 of the receiving groove 36, and the receiving groove 36 is sleeved on the support shaft 37 through the sleeve 40. The support shaft 37 and the sleeve 40 can be fitted with interference fit to fix the receiving groove 36 on the support shaft 37. It can be seen that the receiving groove 36 and the support shaft 37 are coaxially arranged.

[0061] The receiving groove 36 is used to place the rubber part. The receiving groove 36 is made of a mesh, that is, the groove bottom plate 38 and the baffle plate 39 are both made of a mesh, and the mesh is a corrosion-resistant steel wire mesh. In this way, the hydrogen-blended natural gas can easily pass through the steel wire mesh to fully contact the rubber part, so that all parts of the rubber part can fully contact the hydrogen-blended natural gas.

[0062] After the rubber piece is placed in the receiving groove 36, the explosion-proof motor 32 is turned on, and the explosion-proof motor 32 drives the support shaft 37 to rotate, so that the receiving groove 36 and the fan blades 35 rotate together with the support shaft 37, which brings two beneficial effects: first, it is easy to cause the rubber piece to roll in the receiving groove 36, thereby further promoting full contact between the rubber piece and the hydrogen-doped natural gas; second, the fan blades 35 can stir the hydrogen-doped natural gas, prevent hydrogen and natural gas from stratifying due to standing, make the two mixed more evenly, and thus ensure accurate detection results.

[0063] It should be noted that the above description is that after the rubber member is placed in the receiving groove 36, the rubber member is not fixed to the receiving groove 36, so when the receiving groove 36 rotates with the support shaft 37, the rubber member has a rolling movement tendency, and the rolling here refers to the rolling of the rubber member relative to the receiving groove 36. Of course, after the rubber member is placed in the receiving groove 36, the rubber member can also be fixed in the receiving groove 36 with a fastener (such as a wire), so that when the receiving groove 36 rotates, the rubber member rotates with the receiving groove 36, and the two are relatively stationary.

[0064] In this embodiment, a fan blade 35 is provided above and below the receiving groove 36 . Of course, the number of the fan blades 35 can be determined according to actual conditions.

[0065] Since the performance testing device for hydrogen-doped natural gas rubber parts of this embodiment has a different bearing platform structure from the performance testing device for hydrogen-doped natural gas rubber parts of the first embodiment, the use method of the performance testing device for hydrogen-doped natural gas rubber parts of this embodiment is different from the use method of the performance testing device for hydrogen-doped natural gas rubber parts of the first embodiment only in the specific step of placing the rubber parts to be tested on the bearing platform in step (1), as follows:

[0066] In the method of using the performance testing device for hydrogen-doped natural gas rubber parts of this embodiment, the specific steps of placing the rubber parts to be tested on the supporting platform are: placing the rubber parts in the receiving groove 36, and then turning on the explosion-proof motor 32 to allow the receiving groove 36 and the fan blades 35 to rotate at a uniform speed of 1r / min.

[0067] It should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “front”, “back”, “left”, “right”, and “middle” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A performance testing device for hydrogen-doped natural gas rubber parts, characterized in that: It includes a sealed tank, which is provided with a water inlet and a water outlet, a measuring tank inside the sealed tank, a first opening and a second opening on the measuring tank, the first opening is connected to one end of a first air pipeline, the other end of the first air pipeline passes through the sealed tank and extends to the outside of the sealed tank, the second opening is connected to one end of a second air pipeline, the other end of the second air pipeline passes through the sealed tank and extends to the outside of the sealed tank, a bearing platform for placing rubber parts is provided inside the measuring tank, and a heater is provided between the outer wall of the measuring tank and the inner wall of the sealed tank.

2. The performance detection device for hydrogen-doped natural gas rubber parts according to claim 1 is characterized in that: The bearing platform comprises a bracket fixed on the inner wall of the measuring tank, the bracket is provided with a supporting plate for placing the rubber piece, and the supporting plate is made of a mesh.

3. The performance detection device for hydrogen-doped natural gas rubber parts according to claim 1 is characterized in that: The supporting platform includes a accommodating cylinder, and a first cylinder cover and a second cylinder cover are respectively provided on the two cylinder openings of the accommodating cylinder, a first rotating shaft is provided on the outer side of the first cylinder cover, and a second rotating shaft is provided on the outer side of the second cylinder cover, an explosion-proof motor is provided on the inner wall of the measuring tank, the output shaft of the explosion-proof motor is connected to the first rotating shaft, and the second rotating shaft is rotatably installed on the inner wall of the measuring tank, the accommodating cylinder is made of a mesh, a plurality of wind plates arranged along the axial direction of the accommodating cylinder are provided on the outer wall of the accommodating cylinder, and the plurality of wind plates are evenly spaced along the circumference of the accommodating cylinder, an opening is provided on the cylinder wall of the accommodating cylinder, a cover plate is provided on the opening, and the cover plate is made of a mesh.

4. The performance testing device for hydrogen-doped natural gas rubber parts according to claim 1 is characterized in that: The bearing platform includes a support shaft arranged vertically, the lower end of the support shaft is connected to the output shaft of an explosion-proof motor, the explosion-proof motor is arranged on the inner bottom wall of the measuring tank, the support shaft is provided with a receiving groove arranged horizontally, the support shaft is also provided with fan blades, and the receiving groove is made of a mesh.

5. The performance detection device for hydrogen-doped natural gas rubber parts according to claim 4 is characterized in that: The receiving groove includes a circular groove bottom plate arranged in the horizontal direction, and a baffle plate arranged along the circumference of the groove bottom plate is provided at the edge of the upper side surface of the groove bottom plate. The center of the circle of the groove bottom plate is sleeved on the support shaft. The groove bottom plate and the baffle plate are both made of mesh, and fan blades are provided on the support shafts above and below the receiving groove.

6. The performance detection device for hydrogen-doped natural gas rubber parts according to any one of claims 1 to 5, characterized in that: A first temperature sensor, a second temperature sensor, a pressure sensor and a concentration sensor are provided on the outer wall of the sealed tank. The detection end of the first temperature sensor extends between the inner wall of the sealed tank and the outer wall of the measuring tank. The detection ends of the second temperature sensor, the pressure sensor and the concentration sensor all extend into the interior of the measuring tank.

7. A method for using the performance testing device for hydrogen-doped natural gas rubber parts according to claim 6, characterized in that: The following steps are involved: Open the sealing tank and the measuring tank in turn, place the rubber parts to be tested on the load-bearing platform, and then close the measuring tank and the sealing tank in turn. Close the water outlet of the sealed tank, and inject water into the sealed tank from the water inlet to make the measuring tank completely immersed in water. Close the second gas pipeline, and introduce hydrogen-blended natural gas into the measuring tank through the first gas pipeline. At the same time, start the heater and monitor the concentration, pressure and temperature of the hydrogen-blended natural gas in the measuring tank. When the concentration, pressure and temperature reach the required values, stop introducing hydrogen-blended natural gas into the measuring tank and keep the concentration, pressure and temperature of the hydrogen-blended natural gas in the measuring tank unchanged. After a period of time, connect the other end of the second gas pipeline to the gas recovery device and open the second gas pipeline. Then, introduce nitrogen into the measuring tank through the first gas pipeline. After the hydrogen-blended natural gas in the measuring tank is completely replaced by nitrogen, open the sealing tank and the measuring tank in turn, and take out the rubber parts for performance testing.

8. The method of use according to claim 7, characterized in that: The specific steps of placing the rubber part to be tested on the bearing platform are: placing the rubber part on the supporting plate, and fixing the rubber part on the supporting plate by fasteners.

9. The method of use according to claim 7, characterized in that: The specific steps of placing the rubber part to be tested on the carrying platform are: open the cover of the accommodating cylinder, place the rubber part into the cylinder cavity of the accommodating cylinder through the opening, then cover the opening with the cover, and then start the explosion-proof motor to allow the accommodating cylinder to rotate at a constant speed of 1r / min.

10. The method of use according to claim 7, characterized in that: The specific steps of placing the rubber part to be tested on the bearing platform are: placing the rubber part in the receiving groove, then turning on the explosion-proof motor, and allowing the receiving groove and the fan blade to rotate at a uniform speed of 1r / min.

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