A cleaning device for hydrogen storage tank body processing

Abstract

The application provides a cleaning device for hydrogen storage tank body processing, which comprises: moving pieces, two moving pieces are movably connected with a transmission shaft coaxially connected with an output shaft of a first driving motor, and the moving pieces are movably connected with the transmission shaft through torque springs arranged on the transmission shaft, the two moving pieces have a first state of approaching each other along a horizontal direction and a second state of moving away from each other along the horizontal direction through the extension and contraction of the torque springs; and an abutting piece, the abutting piece is hinged with a connecting piece arranged on the transmission shaft through a torque spring, and the abutting piece has an initial state of rotating around the connecting piece without contacting the tank body and an abutting state of rotating around the connecting piece and contacting the tank body through the extension and contraction of the torque spring. The stability of the cleaning device when cleaning the inside of the tank body is improved.

Description

Technical Field

[0001] This invention relates to the field of hydrogen storage tank body processing technology, and in particular to a cleaning device for hydrogen storage tank body processing. Background Technology

[0002] From hydrogen production to its practical applications, hydrogen storage is an essential step. However, because hydrogen is flammable and explosive, safe, inexpensive, and long-term hydrogen storage is crucial for hydrogen energy utilization. Hydrogen (especially high-pressure hydrogen) tank storage offers advantages such as rapid filling and discharging rates, low basic energy consumption, and high tank manufacturing economics, making it an effective method for hydrogen storage. However, currently widely used metallic materials, especially high-strength materials used in high-pressure vessels, are susceptible to hydrogen embrittlement when in prolonged contact with hydrogen. This embrittlement results in a significant reduction in strength and plasticity, as well as hydrogen-induced hysteresis fracture under low stress, generally referred to as hydrogen embrittlement or hydrogen damage. The risk of hydrogen embrittlement can lead to the failure of hydrogen storage tanks, and coupled with the flammable and explosive nature of hydrogen, it can easily cause fires, explosions, or even major disasters. Therefore, hydrogen storage, especially high-pressure hydrogen storage, places high demands on storage tank conditions.

[0003] Because impurities adhering to the inner wall of the hydrogen storage tank during the production and processing process may react with the hydrogen stored subsequently, causing problems, a cleaning device is needed to clean the inner wall of the hydrogen storage tank. However, existing cleaning devices are often designed for a specific model of hydrogen storage tank, resulting in low practicality of the cleaning device. Summary of the Invention

[0004] In view of this, the main objective of the present invention is to solve the technical problem that existing cleaning devices are often designed for a specific type of hydrogen storage tank, resulting in low practicality of the cleaning devices.

[0005] This invention provides a cleaning device for processing hydrogen storage tank bodies. The cleaning device is disposed inside the tank body and includes:

[0006] The two movable parts are movably engaged on a transmission shaft coaxially connected to the output shaft of the first drive motor, and the movable parts are movably connected to the transmission shaft by a torque spring fixedly sleeved on the transmission shaft. By extending and retracting the torque spring, the two movable parts have a first state of being close to each other in the horizontal direction and a second state of being far apart from each other in the horizontal direction.

[0007] The moving part is equipped with a second drive motor and a screw. The screw is connected to the output shaft of the second drive motor through a meshing disc, and a retractable cleaning part is threaded onto the screw. The second drive motor drives the screw to rotate, so that the cleaning part moves synchronously in the vertical direction.

[0008] The cleaning device also includes:

[0009] The abutment member is hinged to the connector mounted on the drive shaft via a torque spring. The extension and retraction of the torque spring allows the abutment member to have an initial state in which it rotates around the connector without contacting the tank, and an abutment state in which it rotates around the connector and contacts the tank.

[0010] In some embodiments of the present invention, a limiting block is provided on the abutment member, and the limiting block is fixedly connected to a telescopic spring fixed in the abutment member. Through the extension and contraction of the telescopic spring, the limiting block can move along the length direction of the abutment member and abut against the inner wall of the tank.

[0011] In some embodiments of the present invention, the bottom of the drive shaft contacts the bottom inner wall of the tank.

[0012] In some embodiments of the present invention, the cleaning member includes:

[0013] A sliding block sleeved on the screw and threadedly connected to the screw;

[0014] The fixed sleeve is fixedly connected to the sliding block;

[0015] An elastic element disposed within the fixed sleeve; and

[0016] The cleaning block is installed inside the fixed sleeve. One end of the cleaning block is fixedly connected to the elastic element, and the other end of the cleaning block abuts against the inner wall of the tank.

[0017] In some embodiments of the present invention, the elastic element is a telescopic spring.

[0018] In some embodiments of the present invention, the connecting member is fixed to the drive shaft by a bearing.

[0019] In some embodiments of the present invention, through holes are provided at equal intervals on the side wall of the abutment member, and a movable bolt is provided on the side wall of the limiting block. The limiting block can be fixed by inserting the movable bolt into the through hole.

[0020] In some embodiments of the invention, the movable plug is pressable.

[0021] This invention provides a cleaning device for processing hydrogen storage tank bodies. When the tank is not inserted, the extension and retraction of a torque spring causes two moving parts to approach each other horizontally in a first state. The extension and retraction of the torque spring also causes the abutment to rotate around the connecting part without contacting the tank body in an initial state. This allows the cleaning device to be placed into hydrogen storage tanks of different opening sizes. After insertion, the extension and retraction of the torque spring causes the two moving parts to move away from each other horizontally in a second state. The extension and retraction of the torque spring also causes the abutment to rotate around the connecting part and contact the tank body. Furthermore, the device abuts against the bottom of the tank via a drive shaft, and the abutment, in conjunction with a limiting block, abuts against the tank opening, thus ensuring the stability of the cleaning device during cleaning of the tank's interior. Attached Figure Description

[0022] Figure 1 This is a schematic diagram showing the usage state of a cleaning device for processing hydrogen storage tank bodies according to an embodiment of the present invention.

[0023] Figure 2 This is an assembly schematic diagram of a cleaning device for processing hydrogen storage tank bodies according to an embodiment of the present invention.

[0024] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 4 This is a cross-sectional structural diagram of the contact member of a cleaning device for processing a hydrogen storage tank body according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram showing the connection relationship between the moving part and the drive shaft of a cleaning device for processing hydrogen storage tank bodies according to an embodiment of the present invention.

[0027] The above figures include the following reference numerals:

[0028] 10. Tank body; 21. First drive motor; 22. Drive shaft; 23. Moving part; 24. Screw; 25. Second drive motor; 26. Cleaning part; 31. Connecting part; 32. Abutting part; 33. Limiting block; 34. Telescopic spring. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Please see Figures 1-5 The illustration shows a schematic diagram of a cleaning device for processing a hydrogen storage tank body according to this application. The cleaning device is disposed inside the tank body 10 and includes: two movable parts 23, which are movably engaged with a transmission shaft 22 coaxially connected to the output shaft of a first drive motor 21. The movable parts 23 are movably connected to the transmission shaft 22 via torque springs fixedly sleeved on it. The torque springs extend and retract, allowing the two movable parts 23 to have a first state of approaching each other horizontally and a second state of moving away from each other horizontally. A second drive motor 25 and a screw 24 are mounted on the movable parts 23. The screw 24 is connected to the second drive motor 25 via a meshing disc. The output shaft of the motor 25 is driven and connected, and a retractable cleaning component 26 is threaded onto the screw 24. The second drive motor 25 drives the screw 24 to rotate, causing the cleaning component 26 to move synchronously in the vertical direction. The cleaning device also includes an abutment 32, which is hinged to a connector 31 on the drive shaft 22 via a torque spring. Through the extension and retraction of the torque spring, the abutment 32 has an initial state in which it rotates around the connector 31 without contacting the tank 10, and an abutment state in which it rotates around the connector 31 and contacts the tank 10.

[0031] Specifically, a limiting block 33 is provided on the abutment member 32. The limiting block 33 is fixedly connected to a telescopic spring fixed in the abutment member 32. Through the extension and contraction of the telescopic spring, the limiting block 33 can move along the length direction of the abutment member 32 and abut against the inner wall of the tank 10.

[0032] The bottom of the drive shaft 22 is in contact with the bottom inner wall of the tank 10.

[0033] By applying the technical solution of this embodiment, when the tank 10 is not placed inside, the torque spring extends and retracts, causing the two moving parts 23 to be in a first state of approaching each other in the horizontal direction. The torque spring also causes the abutment 32 to be in an initial state of rotating around the connecting part 31 without contacting the tank 10. This allows the cleaning device to be placed into hydrogen storage tanks with different opening sizes. After the tank 10 is placed inside, the torque spring extends and retracts, causing the two moving parts 23 to be in a second state of moving away from each other in the horizontal direction. The torque spring also causes the abutment 32 to be in an abutting state of rotating around the connecting part 31 and contacting the tank 10. Furthermore, the abutment 32 abuts against the bottom of the tank 10 via the drive shaft, and the abutment 32 cooperates with the limiting block 33 to abut against the opening of the tank, thus achieving stability of the cleaning device when cleaning the inside of the tank 10.

[0034] Regarding the specific structure of the cleaning component 26, the cleaning component 26 includes: a sliding block sleeved on and threadedly connected to the screw 24; a fixed sleeve fixedly connected to the sliding block; an elastic element disposed within the fixed sleeve; and a cleaning block disposed within the fixed sleeve, one end of the cleaning block being fixedly connected to the elastic element, and the other end of the cleaning block abutting against the inner wall of the tank 10. This facilitates cleaning.

[0035] It should be noted that the elastic element is a telescopic spring 34.

[0036] Furthermore, the connecting member 31 is fixed to the transmission shaft 22 by a bearing.

[0037] Furthermore, the abutment member 32 has through holes at equal intervals on its side wall, and the limiting block 33 has a movable bolt on its side wall. The limiting block 33 can be fixed by inserting the movable bolt into the through hole.

[0038] Furthermore, the movable plug is pressable.

[0039] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A cleaning device for hydrogen storage tank body processing, the cleaning device being provided in a tank body (10), characterized by, The cleaning device comprises: A moving piece (23), two moving pieces (23) are movably connected to a transmission shaft (22) coaxially connected to the output shaft of the first driving motor (21), and the moving piece (23) is movably connected to the transmission shaft (22) through a torque spring fixed on the transmission shaft (22), and the two moving pieces (23) have a first state of approaching each other in the horizontal direction and a second state of moving away from each other in the horizontal direction through the torque spring; A second driving motor (25) and a screw rod (24) are arranged on the moving piece (23), the screw rod (24) is in transmission connection with the output shaft of the second driving motor (25) through a meshing disc, and a telescopic cleaning piece (26) is threadedly connected to the screw rod (24), and the screw rod (24) is driven to rotate by the second driving motor (25), so that the cleaning piece (26) moves synchronously in the vertical direction; The cleaning device further comprises: An abutting piece (32) is hinged to a connecting piece (31) arranged on the transmission shaft (22) through a torque spring, and the abutting piece (32) has an initial state of rotating around the connecting piece (31) without contacting the tank body (10) and an abutting state of contacting the tank body (10) through the torque spring.

2. The cleaning device for hydrogen storage tank body processing according to claim 1, characterized in that, A limiting block (33) is arranged on the abutting piece (32), the limiting block (33) is fixedly connected to a telescopic spring fixed in the abutting piece (32), and the limiting block (33) can move along the length direction of the abutting piece (32) through the telescopic spring, and abuts against the inner wall of the tank body (10).

3. The cleaning device for hydrogen storage tank body processing according to claim 1, characterized in that, The bottom of the transmission shaft (22) contacts the inner wall of the bottom of the tank body (10).

4. The cleaning device for hydrogen storage tank body processing according to claim 1, characterized in that, The cleaning piece (26) comprises: A sliding block sleeved on the screw rod (24) and threadedly connected to the screw rod (24); A fixed sleeve fixedly connected to the sliding block; An elastic piece arranged in the fixed sleeve; and A cleaning block arranged in the fixed sleeve, one end of the cleaning block is fixedly connected to the elastic piece, and the other end of the cleaning block abuts against the inner wall of the tank body (10).

5. The cleaning device for hydrogen storage tank body processing according to claim 4, wherein The elastic piece is a telescopic spring (34).

6. The cleaning device for hydrogen storage tank body processing according to claim 1, wherein The connecting piece (31) is fixed on the transmission shaft (22) through a bearing.

7. The cleaning device for hydrogen storage tank body processing according to claim 2, wherein The side wall of the abutting piece (32) is provided with through holes at equal intervals, and the side wall of the limiting block (33) is provided with a movable bolt, and the movable bolt can be inserted into the through hole to fix the limiting block (33).

8. The cleaning device for hydrogen storage tank body processing according to claim 7, wherein The movable bolt can be pressed.

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