Pressure experiment device with low-temperature wind tunnel for liquid hydrogen tank research and development

Abstract

The invention relates to the technical field of pressure experiments, in particular to a pressure experiment device with a low-temperature wind tunnel for liquid hydrogen tank research and development, which comprises a laboratory, and is characterized in that the pressure experiment device comprises the low-temperature wind tunnel mounted in the laboratory; the supporting plate is arranged in the laboratory, four supporting strips are hinged to the top of the supporting plate, a top plate is hinged to the other ends of the four supporting strips, an adjusting plate is connected to the top of the top plate through a bearing, and a liquid hydrogen tank body is installed at the top of the adjusting plate; the pressure sensor is arranged in the middle of the liquid hydrogen tank body; and the swinging mechanism is arranged between the supporting plate and the top plate. The pressure experiment device with the low-temperature wind tunnel for research and development of the liquid hydrogen tank has the advantages that shaking and vibration effects of the liquid hydrogen tank in the transportation process can be simulated, testing effects of the liquid hydrogen tank in different temperature environments can be simulated, and authenticity and accuracy of pressure testing of the liquid hydrogen tank are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure experiments, and particularly to a pressure experiment device with a low-temperature wind tunnel for the research and development of liquid hydrogen tanks. Background Art

[0002] As is well known, with the continuous growth of the global demand for clean energy, hydrogen energy, as an efficient and environmentally friendly energy carrier, has received increasing attention. Liquid hydrogen, as a storage form of hydrogen, is obtained by cooling hydrogen to an extremely low temperature (-253 °C), and has the advantages of high energy density per unit volume and clean combustion products (mainly water vapor), showing great application potential in the fields of aerospace, transportation, energy storage, etc. However, the storage and transportation of liquid hydrogen face a series of technical challenges. Due to the extremely low temperature of liquid hydrogen, extremely high requirements are imposed on the materials, structures, and manufacturing processes of storage containers. As a key device for liquid hydrogen storage, the stability and safety of the performance of liquid hydrogen tanks are directly related to the success or failure of hydrogen energy applications. Therefore, strict pressure experiments and low-temperature performance tests on liquid hydrogen tanks are important means to ensure their quality and safety.

[0003] After retrieval, a Chinese patent discloses a carbon canister testing device, and its application publication number is CN221834161U. This patent rotates the rotating disk inside the top of the connecting sleeve. When the rotating disk rotates, it can drive the slide rail to rotate, so as to adjust the angle of the fixed carbon canister. By operating the electric telescopic rod, the electric telescopic rod can drive the telescopic seat to adjust the height, so as to adjust the height of the fixed carbon canister, facilitating the staff to perform multi-directional detection on the carbon canister, thereby improving the efficiency of the staff in detecting the carbon canister.

[0004] During the research and development stage of liquid hydrogen tanks, pressure tests need to be continuously carried out to test the structural strength and sealing performance of the liquid hydrogen tanks. The problems existing in the prior art are: the existing pressure test devices cannot simulate the shaking and vibration of the liquid hydrogen tank during transportation, resulting in the problem that the structural strength and sealing performance of the liquid hydrogen tank cannot be truly tested, and at the same time, the performance of the liquid hydrogen tank in different temperature environments cannot be simulated. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a pressure experiment device with a low-temperature wind tunnel for the research and development of liquid hydrogen tanks, which has the advantages of being able to simulate the shaking and vibration of the liquid hydrogen tank during transportation, being able to simulate the test effect of the liquid hydrogen tank in different temperature environments, and improving the authenticity and accuracy of the pressure test on the liquid hydrogen tank.

[0007] (2) Technical Solutions

[0008] The above technical object of the present invention is achieved through the following technical solutions: A pressure experiment device with a low-temperature wind tunnel for the research and development of liquid hydrogen tanks, including a laboratory, and the pressure test device includes:

[0009] A low-temperature wind tunnel installed inside the laboratory, and the low-temperature wind tunnel is located on one side inside the laboratory;

[0010] A support plate arranged inside the laboratory, four support bars are hinged to the top of the support plate, the other ends of the four support bars are hinged to a top plate, an adjustment plate is connected to the top of the top plate by a bearing, and a liquid hydrogen tank body is installed on the top of the adjustment plate;

[0011] A pressure sensor arranged in the middle of the liquid hydrogen tank body;

[0012] A swing mechanism arranged between the support plate and the top plate;

[0013] A moving and positioning mechanism arranged at the bottom of the support plate; and

[0014] An adjustable support mechanism arranged at the bottom of the low-temperature wind tunnel.

[0015] By adopting the above technical solutions, by setting up a low-temperature wind tunnel, different temperature environments can be simulated inside the laboratory, enabling the liquid hydrogen tank body to be in a low-temperature environment. Through the pressure sensor, the pressure inside the liquid hydrogen tank body can be detected, and the structural strength and sealing effect of the liquid hydrogen tank body can be tested. Through the swing mechanism, the top plate can be driven to swing, causing the liquid hydrogen tank body to shake and vibrate, so that the liquid hydrogen inside the liquid hydrogen tank body continuously impacts with the liquid hydrogen tank body, simulating the scenario of the liquid hydrogen tank body in the actual transportation state. Through the moving and positioning mechanism, the liquid hydrogen tank body can be conveniently transported to the inside and outside of the laboratory and stably positioned when it enters the laboratory. Through the adjustable support mechanism, the output angle of the low-temperature wind tunnel can be adjusted, so that the cold air transported by the low-temperature wind tunnel is adjusted in angle. In this process, the scenario of the liquid hydrogen tank body in the actual transportation state is simulated, and the authenticity of the structural strength and sealing effect of the liquid hydrogen tank body is improved.

[0016] The present invention is further configured as: The swing mechanism includes:

[0017] Two bearing seats installed on the top of the support plate;

[0018] A rotating shaft is connected to the middle of the two bearing seats by a bearing;

[0019] Rotating discs installed at both ends of the rotating shaft;

[0020] A driving plate hinged to the side wall of the rotating disc, and one end of the driving plate is located at an eccentric position of the rotating disc;

[0021] The bearing is connected to a connecting plate at the other end of the driving plate, and the connecting plate is located below the top plate;

[0022] A position adjusting assembly is arranged at the bottom of the top plate, and the position adjusting assembly is connected to the connecting plate; and

[0023] A driving assembly is arranged at the top of the support plate, and the driving assembly is connected to the rotating shaft.

[0024] With the above technical solution, by setting a swinging mechanism, the rotating shaft is driven to rotate by the driving assembly, and the rotating shaft drives the turntable to rotate. Since one end of the driving plate is located at an eccentric position of the turntable, the driving plate can drive the connecting plate to drive the top plate to shake and vibrate, so that the liquid hydrogen tank body shakes and vibrates, and the liquid hydrogen continuously impacts with the liquid hydrogen tank body. By the adjusting assembly, the connecting plate can be adjusted to different positions below the top plate, so that one end of the driving plate is connected to different positions of the top plate, the movement range of the driving plate driving the top plate can be adjusted, and the shaking and vibration range of the top plate can be adjusted.

[0025] The present invention is further configured as: the position adjusting assembly includes:

[0026] An adjusting screw rod installed at the bottom of the top plate, and the adjusting screw rod is in threaded connection with the connecting plate;

[0027] A first servo motor installed at the bottom of the top plate, and the output end of the first servo motor is fixedly connected to the adjusting screw rod;

[0028] Two guiding frames fixedly connected to the bottom of the top plate, a guiding block is movably arranged inside the guiding frame, and the bottom of the guiding block is fixedly connected to the connecting plate.

[0029] With the above technical solution, by setting a position adjusting assembly, the first servo motor drives the rotational movement of the adjusting screw rod, and the threaded movement of the adjusting screw rod and the connecting rod causes the connecting rod to perform an adjusting movement at the bottom of the top plate. The guiding frame and the guiding block limit the movement of the connecting rod, so that the connecting rod performs a horizontal displacement at the bottom of the top plate. Thus, the connecting rod can be adjusted to different positions at the bottom of the top plate, so that the other end of the driving plate is connected to different positions of the top plate.

[0030] The present invention is further configured as: the driving assembly includes:

[0031] A second servo motor installed at the top of the support seat;

[0032] A driving wheel installed at the output end of the second servo motor;

[0033] A driven wheel fixedly connected to the middle of the rotating shaft; and

[0034] A transmission belt disposed between the driving wheel and the driven wheel.

[0035] With the above technical solution, by setting the driving component, the driving wheel is driven to rotate by the second servo motor, and the driven wheel is driven to rotate by the transmission belt, so that the rotating shaft obtains a rotational motion, realizing the driving of the rotating shaft.

[0036] The present invention is further configured as: the moving and positioning mechanism includes:

[0037] Two slide rails fixedly connected inside the laboratory;

[0038] A plurality of moving wheels installed at the bottom of the support plate, and the moving wheels are movably arranged inside the slide rails;

[0039] A positioning rod fixedly connected to the bottom of the support plate;

[0040] A first electric push rod installed at the bottom of the laboratory, and the output end of the first electric push rod is fixedly connected with a cross plate; and

[0041] Two positioning hooks installed on the top of the cross plate, and the positioning hooks are adapted to the positioning rod.

[0042] With the above technical solution, by setting the moving and positioning mechanism, through the setting of the slide rails and the moving wheels, it is convenient to carry the support plate with the liquid hydrogen tank to the inside and outside of the laboratory. By driving the lifting motion of the cross plate by the first electric push rod, the positioning hook blocks the positioning rod. When the positioning hook contacts the positioning rod, the first electric push rod pulls the cross plate to drive the positioning hook to move downward, and the positioning hook hooks and limits the positioning rod, realizing the positioning restriction of the support plate entering the laboratory.

[0043] The present invention is further configured as: the adjustable support mechanism includes:

[0044] A support seat fixedly connected inside the laboratory, and the support seat is arranged in a Z shape;

[0045] A support rear frame installed on the top of the support seat, and the top of the support rear frame is hinged with the cryogenic wind tunnel;

[0046] A second electric push rod hinged to the other end of the support seat, and the output end of the second electric push rod is hinged with a support front frame, and the top of the support front frame is hinged with the cryogenic wind tunnel.

[0047] With the above technical solution, by setting the adjustable support mechanism, by driving the movement of the support front frame by the second electric push rod, the movement of the cryogenic wind tunnel is restricted by the hinged action of the support rear frame and the cryogenic wind tunnel. In this way, the conveying angle of the cryogenic wind tunnel is adjusted.

[0048] The present invention is further configured such that: one end of the slide rail is fixedly connected with a cover plate, a regulating screw rod is threadedly connected to the middle of the cover plate, a positioning foot is movably arranged at one end of the regulating screw rod, the side wall of the positioning foot is arc-shaped, the side wall of the positioning foot contacts with the moving wheel, and both side walls of the positioning foot contact with the slide rail.

[0049] By adopting the above technical solution, by setting the regulating screw rod to drive the position of the positioning foot inside the slide rail, the moving wheel inside the slide rail can be positioned and restricted.

[0050] The present invention is further configured such that: a third servo motor is bolted to the bottom of the top plate, the output end of the third servo motor is fixedly connected with an adjusting plate, and a support bearing ring is arranged between the adjusting plate and the top plate.

[0051] By adopting the above technical solution, by setting the third servo motor to drive the rotation of the adjusting plate, the liquid hydrogen tank body can be rotated, so that different positions of the liquid hydrogen tank body receive the cold air of the cryogenic wind tunnel, and each position of the liquid hydrogen tank body can be in contact with low temperature. The support bearing ring enables the top plate to support the adjusting plate and reduces the friction between the top plate and the adjusting plate at the same time.

[0052] The present invention is further configured such that: two fixing seats are fixedly connected to the top of the adjusting plate, mounting clamping strips are bolted to the tops of the fixing seats, the mounting clamping strips are bolted and matched with the fixing seats, and the liquid hydrogen tank body is located in the middle of the fixing seats and the mounting clamping strips.

[0053] By adopting the above technical solution, by setting the fixing seats and the mounting clamping strips, the liquid hydrogen tank body can be stably supported and limited.

[0054] The present invention is further configured such that: two guiding cylinders are fixedly connected to the bottom of the laboratory, a guiding rod is movably arranged inside the guiding cylinder, and the top of the guiding rod is fixedly connected with a cross plate.

[0055] By adopting the above technical solution, by setting the guiding rod and the guiding cylinder, the movement of the cross plate is guided and supported.

[0056] (III) Beneficial effects

[0057] Compared with the prior art, the present invention provides a pressure experiment device with a cryogenic wind tunnel for the research and development of liquid hydrogen tanks, and has the following beneficial effects:

[0058] 1. The pressure experiment device with a cryogenic wind tunnel for the research and development of liquid hydrogen tanks can simulate different temperature environments inside the laboratory by setting up a cryogenic wind tunnel, a pressure sensor, and a swinging mechanism. It can keep the liquid hydrogen tank body in a low-temperature environment. The pressure inside the liquid hydrogen tank body can be detected by the pressure sensor, and the structural strength and sealing effect of the liquid hydrogen tank body can be tested. The swinging mechanism can drive the top plate to swing, causing the liquid hydrogen tank body to shake and vibrate, so that the liquid hydrogen inside the liquid hydrogen tank body continuously impacts with the liquid hydrogen tank body, and it can simulate the scenario of the liquid hydrogen tank body in the real transportation state.

[0059] 2. The pressure experiment device with a cryogenic wind tunnel for the research and development of liquid hydrogen tanks can facilitate the transportation of the liquid hydrogen tank body to the inside and outside of the laboratory by setting up a mobile positioning mechanism and an adjustable support mechanism, and can stably position the liquid hydrogen tank body entering the laboratory. The output angle of the cryogenic wind tunnel can be adjusted by the adjustable support mechanism, so that the cold air transported by the cryogenic wind tunnel can be adjusted in angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 is the overall structural view of the present invention;

[0061] Figure 2 is the structural view of the swinging mechanism in the present invention;

[0062] Figure 3 is the structural view of the driving component in the present invention;

[0063] Figure 4 is the structural view of the adjusting component in the present invention;

[0064] Figure 5 is the structural view of the adjustable support mechanism in the present invention;

[0065] Figure 6 is the structural view of the cover plate, the adjusting screw rod, and the positioning feet in the present invention;

[0066] Figure 7 is the disassembled structural view of the cover plate, the adjusting screw rod, and the positioning feet in the present invention.

[0067] In the figure: 1. Laboratory; 2. Low-temperature wind tunnel; 3. Support plate; 4. Support bar; 5. Top plate; 6. Adjusting plate; 7. Liquid hydrogen tank body; 8. Pressure sensor; 9. Swing mechanism; 10. Moving and positioning mechanism; 11. Adjustable support mechanism; 91. Bearing seat; 92. Rotating shaft; 93. Turntable; 94. Driving plate; 95. Connecting plate; 96. Adjusting component; 97. Driving component; 961. Adjusting screw rod; 962. First servo motor; 963. Guide frame; 964. Guide block; 971. Second servo motor; 972. Driving wheel; 973. Driven wheel; 974. Transmission belt; 101. Slide rail; 102. Moving wheel; 103. Positioning rod; 104. First electric push rod; 105. Cross plate; 106. Positioning hook; 111. Support seat; 112. Rear support frame; 113. Second electric push rod; 114. Front support frame; 12. Cover plate; 13. Adjusting screw rod; 14. Positioning foot; 15. Third servo motor; 16. Support bearing ring; 17. Fixed seat; 18. Installation clamping strip; 19. Guide cylinder; 20. Guide rod. Detailed implementation manners

[0068] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0069] Embodiment 1

[0070] Please refer to Figures 1-7 , a pressure experiment device with a low-temperature wind tunnel 2 for the research and development of a liquid hydrogen tank, including a laboratory 1, and the pressure test device includes:

[0071] The low-temperature wind tunnel 2 installed inside the laboratory 1, and the low-temperature wind tunnel 2 is located on one side inside the laboratory 1;

[0072] The support plate 3 arranged inside the laboratory 1, four support bars 4 are hinged to the top of the support plate 3, the other ends of the four support bars 4 are hinged to the top plate 5, the top of the top plate 5 is connected by a bearing to the adjusting plate 6, and the liquid hydrogen tank body 7 is installed on the top of the adjusting plate 6;

[0073] The pressure sensor 8 arranged in the middle of the liquid hydrogen tank body 7;

[0074] The swing mechanism 9 arranged between the support plate 3 and the top plate 5;

[0075] The moving and positioning mechanism 10 arranged at the bottom of the support plate 3; and

[0076] The adjustable support mechanism 11 is arranged at the bottom of the low-temperature wind tunnel 2. During use, by setting up the low-temperature wind tunnel 2, different temperature environments can be simulated inside the laboratory 1, enabling the liquid hydrogen tank 7 to be in a low-temperature environment. The pressure sensor 8 can detect the pressure inside the liquid hydrogen tank 7, and the structural strength and sealing effect of the liquid hydrogen tank 7 can be tested. The swing mechanism 9 can drive the top plate 5 to swing, causing the liquid hydrogen tank 7 to shake and vibrate, so that the liquid hydrogen inside the liquid hydrogen tank 7 continuously impacts the liquid hydrogen tank 7, simulating the scenario of the liquid hydrogen tank 7 in the actual transportation state. The moving and positioning mechanism 10 can facilitate the transportation of the liquid hydrogen tank 7 to the inside and outside of the laboratory 1 and stably position the liquid hydrogen tank 7 entering the inside of the laboratory 1. The adjustable support mechanism 11 can adjust the output angle of the low-temperature wind tunnel 2, enabling the cold air transported by the low-temperature wind tunnel 2 to be angle-adjusted. In this process, the scenario of the liquid hydrogen tank 7 in the actual transportation state is simulated, improving the authenticity of the structural strength and sealing effect of the liquid hydrogen tank 7.

[0077] Among them, the swing mechanism 9 includes:

[0078] Two bearing seats 91 installed on the top of the support plate 3;

[0079] A rotating shaft 92 is connected by bearings in the middle of the two bearing seats 91;

[0080] Rotating discs 93 installed at both ends of the rotating shaft 92;

[0081] A driving plate 94 hinged to the side wall of the rotating disc 93, with one end of the driving plate 94 located at an eccentric position of the rotating disc 93;

[0082] A connecting plate 95 connected by bearings to the other end of the driving plate 94, with the connecting plate 95 located below the top plate 5;

[0083] A position adjustment component 96 arranged at the bottom of the top plate 5, with the position adjustment component 96 connected to the connecting plate 95; and

[0084] The driving assembly 97 is arranged on the top of the support plate 3. The driving assembly 97 is connected to the rotating shaft 92. During use, the rotating shaft 92 is driven to rotate by the driving assembly 97, and the rotating shaft 92 drives the turntable 93 to rotate. Since one end of the driving plate 94 is located at the eccentric position of the turntable 93, and since the support plate 3 supports the top plate 5 through the support bars 4, and both ends of the support bars 4 are hinged to the support plate 3 and the top plate 5, the driving plate 94 can drive the connecting plate 95 to drive the top plate 5 to shake and vibrate, so that the liquid hydrogen tank 7 is shaken and vibrated, and the liquid hydrogen continuously impacts with the liquid hydrogen tank 7. Through the adjusting assembly 96, the different positions of the connecting plate 95 below the top plate 5 can be adjusted, and one end of the driving plate 94 is connected to different positions of the top plate 5, so that the movement range of the driving plate 94 driving the top plate 5 can be adjusted, and the shaking and vibration range of the top plate 5 can be adjusted.

[0085] Among them, the position adjusting assembly 96 includes:

[0086] The adjusting screw rod 961 installed at the bottom of the top plate 5, and the adjusting screw rod 961 is threadedly connected to the connecting plate 95;

[0087] The first servo motor 962 installed at the bottom of the top plate 5, and the output end of the first servo motor 962 is fixedly connected to the adjusting screw rod 961;

[0088] Two guiding frames 963 fixedly connected to the bottom of the top plate 5. A guiding block 964 is movably arranged inside the guiding frame 963, and the bottom of the guiding block 964 is fixedly connected to the connecting plate 95. During use, the first servo motor 962 drives the rotational movement of the adjusting screw rod 961, and the threaded movement of the adjusting screw rod 961 and the connecting plate 95 causes the connecting plate 95 to make an adjusting movement at the bottom of the top plate 5. The guiding frame 963 and the guiding block 964 limit the movement of the connecting plate 95, so that the connecting plate 95 makes a horizontal displacement at the bottom of the top plate 5. In this way, the different positions of the connecting plate 95 at the bottom of the top plate 5 can be adjusted, so that the other end of the driving plate 94 is connected to different positions of the top plate 5, and the shaking range of the driving plate 94 driving the top plate 5 is adjusted.

[0089] Among them, the driving assembly 97 includes:

[0090] The second servo motor 971 installed on the top of the support seat 111;

[0091] The driving wheel 972 installed at the output end of the second servo motor 971;

[0092] The driven wheel 973 fixedly connected to the middle of the rotating shaft 92; and

[0093] A transmission belt 974 is arranged between a driving wheel 972 and a driven wheel 973. During use, the second servo motor 971 drives the driving wheel 972 to rotate, and drives the driven wheel 973 to rotate through the transmission belt 974, so that the rotating shaft 92 obtains a rotational motion, realizing the driving of the rotating shaft 92.

[0094] Among them, a third servo motor 15 is bolted to the bottom of the top plate 5. The output end of the third servo motor 15 is fixedly connected to an adjustment plate 6. A support bearing ring 16 is arranged between the adjustment plate 6 and the top plate 5. During use, the third servo motor 15 drives the adjustment plate 6 to rotate, enabling the liquid hydrogen tank 7 to rotate, so that different positions of the liquid hydrogen tank 7 receive the cold air of the low-temperature wind tunnel 2, enabling each position of the liquid hydrogen tank 7 to have low-temperature contact. The support bearing ring 16 enables the top plate 5 to support the adjustment plate 6, and at the same time reduces the friction between the top plate 5 and the adjustment plate 6.

[0095] Among them, two fixed seats 17 are fixedly connected to the top of the adjustment plate 6. An installation clamping strip 18 is bolted to the top of the fixed seat 17. The installation clamping strip 18 is bolted and matched with the fixed seat 17. The liquid hydrogen tank 7 is located in the middle of the fixed seat 17 and the installation clamping strip 18. During use, the fixed seat 17 and the installation clamping strip 18 can stably support and limit the liquid hydrogen tank 7.

[0096] The working principle of this embodiment: The low-temperature wind tunnel 2 simulates different temperature environments inside the laboratory 1, enabling the liquid hydrogen tank 7 to be in a low-temperature environment. The pressure sensor 8 can detect the pressure inside the liquid hydrogen tank 7, and can test and detect the structural strength and sealing effect of the liquid hydrogen tank 7. The second servo motor 971 drives the driving wheel 972 to rotate, drives the driven wheel 973 to rotate through the transmission belt 974, so that the rotating shaft 92 obtains a rotational motion. The rotating shaft 92 drives the turntable 93 to rotate. Since one end of the driving plate 94 is located at an eccentric position of the turntable 93, and since the support plate 3 supports the top plate 5 through the support bar 4, and both ends of the support bar 4 are hinged and matched with the support plate 3 and the top plate 5, the driving plate 94 can drive the connecting plate 95 to drive the top plate 5 to shake and vibrate, so that the liquid hydrogen tank 7 shakes and vibrates, causing the liquid hydrogen to continuously impact with the liquid hydrogen tank 7. The first servo motor 962 drives the rotational motion of the adjusting screw rod 961. The threaded motion of the adjusting screw rod 961 and the connecting plate 95 enables the connecting plate 95 to perform an adjustment motion at the bottom of the top plate 5, adjusting different positions of the connecting plate 95 at the bottom of the top plate 5, so that the other end of the driving plate 94 is connected to different positions of the top plate 5, realizing the adjustment of the shaking range of the driving plate 94 driving the top plate 5.

[0097] Embodiment 2

[0098] Reference Figures 4-7, A pressure experiment device for the research and development of a liquid hydrogen tank with a low-temperature wind tunnel 2 also includes a mobile positioning mechanism 10. Among them, the mobile positioning mechanism 10 includes:

[0099] Two slide rails 101 fixedly connected inside the laboratory 1;

[0100] A plurality of moving wheels 102 installed at the bottom of the support plate 3, and the moving wheels 102 are movably arranged inside the slide rails 101;

[0101] A positioning rod 103 fixedly connected to the bottom of the support plate 3;

[0102] A first electric push rod 104 installed at the bottom of the laboratory 1, and the output end of the first electric push rod 104 is fixedly connected with a cross plate 105; and

[0103] Two positioning hooks 106 installed on the top of the cross plate 105, and the positioning hooks 106 are adapted to the positioning rod 103. During use, through the settings of the slide rails 101 and the moving wheels 102, it is convenient to move the support plate 3 carrying the liquid hydrogen tank body 7 to the inside and outside of the laboratory 1. By driving the lifting movement of the cross plate 105 by the first electric push rod 104, the positioning hooks 106 block the positioning rod 103. When the positioning hooks 106 contact the positioning rod 103, the first electric push rod 104 pulls the cross plate 105 to drive the positioning hooks 106 to move downward, and the positioning hooks 106 hook and limit the positioning rod 103, realizing the positioning restriction of the support plate 3 entering the inside of the laboratory 1.

[0104] Among them, the adjustable support mechanism 11 includes:

[0105] A support seat 111 fixedly connected inside the laboratory 1, and the support seat 111 is arranged in a Z shape;

[0106] A support rear frame 112 installed on the top of the support seat 111, and the top of the support rear frame 112 is hinged with the low-temperature wind tunnel 2;

[0107] A second electric push rod 113 hinged to the other end of the support seat 111, the output end of the second electric push rod 113 is hinged with a support front frame 114, and the top of the support front frame 114 is hinged with the low-temperature wind tunnel 2. During use, by driving the movement of the support front frame 114 by the second electric push rod 113, the movement of the low-temperature wind tunnel 2 is restricted by the hinge action of the support rear frame 112 and the low-temperature wind tunnel 2. In this way, the conveying angle of the low-temperature wind tunnel 2 is adjusted.

[0108] One end of the slide rail 101 is fixedly connected with a cover plate 12. A adjusting screw rod 13 is threadedly connected to the middle of the cover plate 12. One end of the adjusting screw rod 13 is movably provided with a positioning foot 14. The side wall of the positioning foot 14 is arc-shaped. The side wall of the positioning foot 14 contacts the moving wheel 102, and both side walls of the positioning foot 14 contact the slide rail 101. During use, the moving wheel 102 inside the slide rail 101 can be positioned and restricted. The adjusting screw rod 13 drives the positioning foot 14 to move inside the slide rail 101, and different positions of the moving wheel 102 can be restricted.

[0109] Two guide cylinders 19 are fixedly connected to the bottom of the laboratory 1. A guide rod 20 is movably arranged inside the guide cylinder 19. The top of the guide rod 20 is fixedly connected with a cross plate 105. During use, the guide rod 20 moves inside the guide cylinder 19 to guide and support the movement of the cross plate 105.

[0110] Working principle of this embodiment: Through the arrangement of the slide rail 101 and the moving wheel 102, it is convenient to carry the support plate 3 with the liquid hydrogen tank body 7 to the inside and outside of the laboratory 1. The first electric push rod 104 drives the positioning hook 106 to hook and position the positioning rod 103, and positions the support plate 3 entering the laboratory 1. By driving the movement of the front support frame 114 with the second electric push rod 113, the movement of the low-temperature wind tunnel 2 is restricted by the hinged connection between the rear support frame 112 and the low-temperature wind tunnel 2, so as to adjust the conveying angle of the low-temperature wind tunnel 2. At the same time, the positioning foot 14 can position and restrict the moving wheel 102 inside the slide rail 101. The adjusting screw rod 13 drives the positioning foot 14 to move inside the slide rail 101, and different positions of the moving wheel 102 can be restricted.

[0111] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure test device with a low temperature wind tunnel for the development of liquid hydrogen tanks, comprising a laboratory (1), characterized in that: The pressure testing device comprises: A low-temperature wind tunnel (2) installed inside the laboratory (1), wherein the low-temperature wind tunnel (2) is located on one side inside the laboratory (1); A support plate (3) is arranged inside the laboratory (1), the top of the support plate (3) is hinged with four support bars (4), the other ends of the four support bars (4) are hinged with a top plate (5), the top bearing of the top plate (5) is connected with an adjustment plate (6), and the top of the adjustment plate (6) is installed with a liquid hydrogen tank (7); A pressure sensor (8) disposed in the middle of the liquid hydrogen tank (7); A swing mechanism (9) disposed between the support plate (3) and the top plate (5); A movable positioning mechanism (10) disposed at the bottom of the support plate (3); and An adjustable support mechanism (11) is arranged at the bottom of the low-temperature wind tunnel (2).

2. A pressure test device with a low temperature wind tunnel for liquid hydrogen tank development according to claim 1, characterized in that: The swing mechanism (9) comprises: Two bearing seats (91) mounted on the top of the support plate (3); The middle bearings of the two bearing seats (91) are connected to a rotating shaft (92); Rotating disks (93) mounted on both ends of the rotating shaft (92); A driving plate (94) hingedly connected to a side wall of the rotating disk (93), one end of the driving plate (94) being located at an eccentric position of the rotating disk (93); The bearing is connected to a connecting plate (95) at the other end of the driving plate (94), and the connecting plate (95) is located below the top plate (5); A position adjustment component (96) is disposed at the bottom of the top plate (5), and the position adjustment component (96) is connected to the connecting plate (95); and A driving assembly (97) is arranged on the top of the supporting plate (3), and the driving assembly (97) is connected to the rotating shaft (92).

3. A pressure test device with a low temperature wind tunnel for liquid hydrogen tank research and development according to claim 2, characterized in that: The position adjustment component (96) comprises: An adjusting screw rod (961) installed at the bottom of the top plate (5), wherein the adjusting screw rod (961) is threadedly connected to the connecting plate (95); A first servo motor (962) installed at the bottom of the top plate (5), wherein an output end of the first servo motor (962) is fixedly connected to the adjusting screw rod (961); Two guide frames (963) are fixedly connected to the bottom of the top plate (5), and guide blocks (964) are movably arranged inside the guide frames (963), and the bottom of the guide blocks (964) is fixedly connected to the connecting plate (95).

4. A pressure test device with a low temperature wind tunnel for liquid hydrogen tank development according to claim 2, characterized in that: The drive assembly (97) comprises: A second servo motor (971); A driving wheel (972) mounted on the output end of the second servo motor (971); a driven wheel (973) fixedly connected to the middle of the rotating shaft (92); and A transmission belt (974) is arranged between the driving wheel (972) and the driven wheel (973).

5. The pressure test device with a low temperature wind tunnel for liquid hydrogen tank research and development according to claim 1 is characterized by: The mobile positioning mechanism (10) comprises: Two slide rails (101) fixedly connected to the interior of the laboratory (1); A plurality of movable wheels (102) installed at the bottom of the support plate (3), wherein the movable wheels (102) are movably arranged inside the slide rail (101); A positioning rod (103) fixedly connected to the bottom of the support plate (3); A first electric push rod (104) installed at the bottom of the laboratory (1), wherein an output end of the first electric push rod (104) is fixedly connected to a horizontal plate (105); and Two positioning hooks (106) are installed on the top of the horizontal plate (105), and the positioning hooks (106) are adapted to the positioning rods (103).

6. A pressure test device with a low temperature wind tunnel for liquid hydrogen tank development according to claim 4, characterized in that: The adjustable supporting mechanism (11) comprises: A support base (111) fixedly connected to the interior of the laboratory (1), wherein the support base (111) is arranged in a Z shape; A supporting rear frame (112) installed on the top of the supporting seat (111), the top of the supporting rear frame (112) being hingedly matched with the low-temperature wind tunnel (2); A second electric push rod (113) is hinged to the other end of the support seat (111), and the output end of the second electric push rod (113) is hinged to a support front frame (114). The top of the support front frame (114) is hingedly matched with the low-temperature wind tunnel (2), and a second servo motor (971) is installed on the top of the support seat (111).

7. The pressure test device with a low temperature wind tunnel for liquid hydrogen tank research and development according to claim 5, characterized in that: One end of the slide rail (101) is fixedly connected to a cover plate (12), the middle part of the cover plate (12) is threadedly connected to an adjusting screw rod (13), one end of the adjusting screw rod (13) is movably provided with a positioning foot (14), the side wall of the positioning foot (14) is arranged in an arc shape, the side wall of the positioning foot (14) is in contact with the moving wheel (102), and the two side walls of the positioning foot (14) are in contact with the slide rail (101).

8. The pressure test device with a low temperature wind tunnel for liquid hydrogen tank research and development according to claim 1 is characterized by: A third servo motor (15) is bolted to the bottom of the top plate (5), an output end of the third servo motor (15) is fixedly connected to the adjustment plate (6), and a support bearing ring (16) is provided between the adjustment plate (6) and the top plate (5).

9. The pressure test device with a low temperature wind tunnel for liquid hydrogen tank research and development according to claim 1, characterized in that: The top of the adjustment plate (6) is fixedly connected to two fixing seats (17), the top of the fixing seat (17) is bolted with a mounting clip (18), the mounting clip (18) is bolted to the fixing seat (17), and the liquid hydrogen tank body (7) is located in the middle of the fixing seat (17) and the mounting clip (18).

10. The pressure test device with a low temperature wind tunnel for liquid hydrogen tank research and development according to claim 5, characterized in that: Two guide cylinders (19) are fixedly connected to the bottom of the laboratory (1), and guide rods (20) are movably arranged inside the guide cylinders (19), and the tops of the guide rods (20) are fixedly connected to the transverse plate (105).

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