A sealing device for a liquid hydrogen storage tank pressure vessel stainless steel forging

Abstract

The utility model discloses a kind of liquid hydrogen storage tank pressure vessel stainless steel forge piece sealing devices, it is related to pressure vessel technical field, the utility model includes base, the base top is fixedly connected with pressure vessel, sealing mechanism is provided on the pressure vessel, locking mechanism is provided on the pressure vessel, the sealing mechanism includes connecting pipe, the utility model is provided with connecting shell, while connecting shell is moved downward, connecting shell will also slide on limit rod, then connecting shell will extrude spring one, so that spring one has certain resilience, when connecting shell is fixed, spring one is in compression state, at this time, the resilience of spring one will push connecting disc downward, by connecting shell is pressed down, so that spring one resilience will seal ring be tightly attached on connecting pipe, reach the effect that can be to pressure vessel Stable good sealing, prevent liquid hydrogen from leaking from device due to reasons such as shaking, reduce operating cost, improve storage and transportation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of pressure vessel technology, and in particular relates to a sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel. Background Technology

[0002] Liquid hydrogen storage tanks are pressure vessels used to store and transport liquid hydrogen. They can withstand extremely low temperatures and high pressure environments to ensure the safe storage of liquid hydrogen. Liquid hydrogen is a substance that is a gas at normal temperature and pressure, but it becomes liquid when cooled to below -253 degrees Celsius.

[0003] When storing liquid hydrogen, improper sealing of liquid hydrogen storage tank pressure vessels may lead to leakage, increasing evaporation losses of liquid hydrogen, raising operating costs, and reducing storage and transportation efficiency. Therefore, we propose a stainless steel forging sealing device for liquid hydrogen storage tank pressure vessels. Summary of the Invention

[0004] The purpose of this utility model is to provide a sealing device for stainless steel forgings of liquid hydrogen storage tank pressure vessels. By pressing the connecting shell downward, the connecting shell slides on the limiting rod. At the same time, the connecting shell compresses the spring, causing the spring to push the connecting disc, thus tightly pressing the sealing ring against the connecting pipe, solving the problem of stable and good sealing of pressure vessels.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel, including a base, a pressure vessel fixedly connected to the top of the base, a sealing mechanism on the pressure vessel, and a locking mechanism on the pressure vessel.

[0007] The sealing mechanism includes a connecting pipe, a sealing ring slidably connected to the outer surface of the connecting pipe, a connecting plate fixedly connected to the top of the sealing ring, a limit rod fixedly connected to the top of the connecting plate, a connecting shell slidably connected to the outer surface of the limit rod, a spring fixedly connected to the bottom of the connecting shell, a sliding groove opened inside the connecting shell, and a slider slidably connected to the inner wall of the sliding groove.

[0008] Furthermore, the outer surface of the connecting pipe is fixedly connected to the inner wall of the pressure vessel, a total of several limiting rods are provided, a total of several springs are provided, and the end of one spring away from the connecting shell is fixedly connected to the top of the connecting plate.

[0009] Furthermore, the inner side of the spring is sleeved with the outer surface of the limiting rod, a plurality of sliding grooves are provided, and the outer surface of the slider is fixedly connected to the outer surface of the sealing ring.

[0010] Furthermore, the locking mechanism includes a fixed frame fixedly connected to the outer surface of the connecting tube. Two fixed frames are provided. A connecting block is slidably connected to the inner wall of the fixed frame. The top of the connecting block is fixedly connected to the bottom of the connecting shell.

[0011] Furthermore, a threaded cylinder is fixedly connected to the outer surface of the fixed frame, and a bolt is threadedly connected to the inner wall of the threaded cylinder. The outer surface of the bolt is rotatably connected to the inner wall of the fixed frame, and the outer surface of the bolt is rotatably connected to the inner wall of the connecting block.

[0012] Furthermore, an extension block is fixedly connected to the bottom of the connecting shell. There are two extension blocks in total. A slot is opened inside the extension block, and a card block is inserted into the inner wall of the slot.

[0013] Furthermore, a sliding rod is fixedly connected to the side of the card block away from the extension block, and an L-shaped block is slidably connected to the outer surface of the sliding rod. The outer surface of the L-shaped block is fixedly connected to the outer surface of the connecting pipe.

[0014] Furthermore, a second spring is fixedly connected to the side of the locking block near the L-shaped block, and the end of the second spring away from the locking block is fixedly connected to the outer surface of the L-shaped block. The inner side of the second spring is sleeved with the outer surface of the slide rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model incorporates a connecting shell. As the connecting shell moves downwards, it slides on a limiting rod, compressing a spring. This spring then has a certain rebound capability. When the connecting shell is fixed, the spring is in a compressed state. The rebound of the spring then pushes the connecting plate downwards. By pressing the connecting shell downwards, the spring rebounds and tightly presses the sealing ring against the connecting pipe, achieving a stable and effective seal for the pressure vessel. This prevents liquid hydrogen from leaking from the device due to shaking or other reasons, reducing operating costs and improving storage and transportation efficiency.

[0017] 2. This utility model incorporates a connecting block. The connecting shell moves the extension block downwards, and the extension block pushes the locking block away from each other. The locking block then moves the sliding rod within the L-shaped block. At this time, the locking block also compresses the second spring. When the bottom of the extension block contacts the L-shaped block, the second spring rebounds, locking the locking block into the slot on the extension block. By using bolts to fix the connecting block within the fixed frame, the connecting shell can be fixed after sealing, preventing displacement or even detachment of the connecting shell from the connecting pipe during long-term use of the pressure vessel, thus improving the sealing stability of the device.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the sealing mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the limiting rod structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the sealing ring structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the connecting block structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the card block structure of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 101. Base; 102. Pressure vessel; 2. Sealing mechanism; 201. Connecting pipe; 202. Sealing ring; 203. Connecting disc; 204. Limiting rod; 205. Connecting shell; 206. Spring one; 207. Slide groove; 208. Slider; 3. Locking mechanism; 301. Fixing frame; 302. Connecting block; 303. Bolt; 304. Threaded cylinder; 305. Extension block; 306. Slot; 307. Locking block; 308. Slide rod; 309. L-shaped block; 310. Spring two. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6As shown, this utility model is a sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel, including a base 101, a pressure vessel 102 fixedly connected to the top of the base 101, a sealing mechanism 2 and a locking mechanism 3 on the pressure vessel 102. This device seals the pressure vessel 102 through the sealing mechanism 2, and then the sealing mechanism 2 can be reinforced by the locking mechanism 3 to further increase the stability of the seal.

[0030] The sealing mechanism 2 includes a connecting pipe 201, a sealing ring 202 slidably connected to the outer surface of the connecting pipe 201, a connecting plate 203 fixedly connected to the top of the sealing ring 202, and a limit rod 204 fixedly connected to the top of the connecting plate 203. The sealing ring 202 can be tightly attached to the connecting pipe 201, thereby sealing the connecting pipe 201. Then, the connecting plate 203 can compress the sealing ring 202, making the seal more stable. A connecting shell 205 is slidably connected to the outer surface of the limit rod 204, and a spring 206 is fixedly connected to the bottom of the connecting shell 205. A groove 207 is opened inside the connecting shell 205, and a slider 208 is slidably connected to the inner wall of the groove 207. When the connecting shell 205 moves downward, the connecting shell 205 will compress the spring 206, and then the rebound of the spring 206 will push the connecting plate 203, thereby causing the sealing ring 202 to... The connecting pipe 201 fits more snugly, and its outer surface is fixedly connected to the inner wall of the pressure vessel 102. Several limiting rods 204 and several springs 206 are provided. The end of spring 206 away from the connecting shell 205 is fixedly connected to the top of the connecting plate 203. The limiting rods 204 restrict the movement of the connecting shell 205, so that the connecting shell 205 can only move along the limiting rods 204, preventing the connecting shell 205 from shifting during movement. The inner side of spring 206 is sleeved with the outer surface of the limiting rod 204. Several sliding grooves 207 are provided. The outer surface of the slider 208 is fixedly connected to the outer surface of the sealing ring 202. The limiting rods 204 restrict the movement of spring 206, preventing spring 206 from tilting or shifting during movement, ensuring that the sealing ring 202 can fit tightly against the connecting pipe 201.

[0031] The locking mechanism 3 includes a fixing frame 301 fixedly connected to the outer surface of the connecting pipe 201. Two fixing frames 301 are provided. A connecting block 302 is slidably connected to the inner wall of the fixing frame 301. The top of the connecting block 302 is fixedly connected to the bottom of the connecting shell 205. The connecting block 302 can slide into the fixing frame 301. When the connecting block 302 is fixed, the connecting shell 205 is also fixed. A threaded cylinder 304 is fixedly connected to the outer surface of the fixing frame 301. A bolt 303 is threadedly connected to the inner wall of the threaded cylinder 304. The outer surface of the bolt 303 is rotatably connected to the inner wall of the fixing frame 301. The outer surface of 303 is rotatably connected to the inner wall of the connecting block 302, allowing the bolt 303 to be tightened inside the threaded cylinder 304. At this time, the bolt 303 fixes the connecting block 302, thereby fixing the connecting shell 205 to the connecting pipe 201. An extension block 305 is fixedly connected to the bottom of the connecting shell 205. There are two extension blocks 305. A slot 306 is opened inside the extension block 305. A locking block 307 is inserted into the inner wall of the slot 306. The locking block 307 can be locked in the slot 306 to initially position the connecting shell 205, which facilitates the subsequent fixing of the connecting shell 205.

[0032] A sliding rod 308 is fixedly connected to the side of the locking block 307 away from the extension block 305. An L-shaped block 309 is slidably connected to the outer surface of the sliding rod 308. The outer surface of the L-shaped block 309 is fixedly connected to the outer surface of the connecting pipe 201. When the locking block 307 moves, it pushes the sliding rod 308. At this time, the sliding rod 308 restricts the movement trajectory of the locking block 307 to prevent the locking block 307 from deviating during the movement. A second spring 310 is fixedly connected to the side of the locking block 307 close to the L-shaped block 309. The end of the second spring 310 away from the locking block 307 is fixedly connected to the outer surface of the L-shaped block 309. The inner side of the second spring 310 is sleeved with the outer surface of the sliding rod 308. The sliding rod 308 restricts the movement trajectory of the second spring 310 to prevent the second spring 310 from tilting or deviating during the movement, ensuring that the locking block 307 can be stably locked in the slot 306.

[0033] One specific application of this embodiment is:

[0034] When the operator needs to use the equipment, first, the sealing ring 202 is placed on the connecting pipe 201, and then the connecting shell 205 is pressed down. At this time, the connecting shell 205 will drive the extension block 305 to move downward. Then, the extension block 305 will push the locking block 307 in a direction away from each other. Then, the locking block 307 will drive the slide rod 308 to slide in the L-shaped block 309. At this time, the locking block 307 will also squeeze the second spring 310. When the bottom of the extension block 305 contacts the L-shaped block 309, the second spring 310 will rebound, causing the locking block 307 to lock in the slot 306 on the extension block 305. At the same time, the connecting shell 205 will also drive the connecting block 302 to slide into the fixing frame 301. At this time, the bolt 303 can be tightened into the threaded cylinder 304. At this time, the bolt 303 fixes the connecting block 302 in the fixing frame 301, thereby fixing the connecting shell 205. This achieves the goal of sealing the connection after sealing. The shell 205 is fixed to prevent the pressure vessel 102 from shifting or even detaching from the connecting pipe 201 during long-term use, thus improving the stability of the device's seal. As the shell 205 moves downward, it also slides on the limiting rod 204, which then compresses the spring 206, giving it a certain rebound capability. When the shell 205 is fixed, the spring 206 is in a compressed state. At this time, the rebound of the spring 206 pushes the connecting plate 203 downward, causing it to push the sealing ring 202 downward, pressing the sealing ring 202 tightly against the connecting pipe 201 and sealing the pressure vessel 102. This achieves a stable and good seal for the pressure vessel 102, preventing liquid hydrogen from leaking from the device due to shaking or other reasons, reducing operating costs, and improving storage and transportation efficiency.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sealing device made of stainless steel forging for a liquid hydrogen storage tank pressure vessel, comprising a base (101), characterized in that: A pressure vessel (102) is fixedly connected to the top of the base (101), and a sealing mechanism (2) is provided on the pressure vessel (102), and a locking mechanism (3) is provided on the pressure vessel (102). The sealing mechanism (2) includes a connecting pipe (201), a sealing ring (202) is slidably connected to the outer surface of the connecting pipe (201), a connecting plate (203) is fixedly connected to the top of the sealing ring (202), a limiting rod (204) is fixedly connected to the top of the connecting plate (203), a connecting shell (205) is slidably connected to the outer surface of the limiting rod (204), a spring (206) is fixedly connected to the bottom of the connecting shell (205), a sliding groove (207) is provided inside the connecting shell (205), and a slider (208) is slidably connected to the inner wall of the sliding groove (207).

2. The sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel according to claim 1, characterized in that, The outer surface of the connecting pipe (201) is fixedly connected to the inner wall of the pressure vessel (102). A number of limiting rods (204) are provided, and a number of springs (206) are provided. The end of the spring (206) away from the connecting shell (205) is fixedly connected to the top of the connecting plate (203).

3. The sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel according to claim 1, characterized in that, The inner side of the spring (206) is sleeved with the outer surface of the limiting rod (204), and a number of sliding grooves (207) are provided. The outer surface of the slider (208) is fixedly connected to the outer surface of the sealing ring (202).

4. The sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel according to claim 1, characterized in that, The locking mechanism (3) includes a fixed frame (301) fixedly connected to the outer surface of the connecting tube (201). There are two fixed frames (301). A connecting block (302) is slidably connected to the inner wall of the fixed frame (301). The top of the connecting block (302) is fixedly connected to the bottom of the connecting shell (205).

5. A sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel according to claim 4, characterized in that, A threaded cylinder (304) is fixedly connected to the outer surface of the fixed frame (301), and a bolt (303) is threadedly connected to the inner wall of the threaded cylinder (304). The outer surface of the bolt (303) is rotatably connected to the inner wall of the fixed frame (301), and the outer surface of the bolt (303) is rotatably connected to the inner wall of the connecting block (302).

6. A sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel according to claim 1, characterized in that, The bottom of the connecting shell (205) is fixedly connected to an extension block (305). There are two extension blocks (305). The extension block (305) has a slot (306) inside. A card block (307) is inserted into the inner wall of the slot (306).

7. A sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel according to claim 6, characterized in that, The side of the card block (307) away from the extension block (305) is fixedly connected to a slide rod (308), and an L-shaped block (309) is slidably connected to the outer surface of the slide rod (308). The outer surface of the L-shaped block (309) is fixedly connected to the outer surface of the connecting pipe (201).

8. A sealing device for a stainless steel forging of a liquid hydrogen storage tank pressure vessel according to claim 6, characterized in that, A second spring (310) is fixedly connected to the side of the locking block (307) near the L-shaped block (309). The end of the second spring (310) away from the locking block (307) is fixedly connected to the outer surface of the L-shaped block (309). The inner side of the second spring (310) is sleeved with the outer surface of the slide rod (308).

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