A gas replenishment fitting for a rapid inflation device

Abstract

The utility model belongs to the technical field of inflation device, and disclose a kind of air supplementing connector of quick inflation device, including micro high-pressure ball valve, the output end of micro high-pressure ball valve is fixedly connected with high-pressure gas pipe, another end of high-pressure gas pipe is fixedly connected with C type self-locking connector, connecting pipe is installed on high-pressure gas pipe, through groove is provided in connecting pipe, one end of through groove is fixedly connected with mounting plate, the upper surface of mounting plate is fixedly connected with first spring, the one end of first spring away from mounting plate is fixedly connected with top plate, the upper surface of top plate is fixedly connected with top block. Single hand can be realized quickly butt joint, operation efficiency is improved, can make another hand keep stable, operate other link, simplify butt joint procedure, shorten butt joint time, reduce waiting and adjustment link, improve overall work flow efficiency, and sealing effect is good, can automatically block reverse flow when gas breaks or reverse pressure, keep the continuity of forward flow.

Description

Technical Field

[0001] This utility model belongs to the technical field of inflation devices, specifically an air replenishment connector for a rapid inflation device. Background Technology

[0002] Rapid inflation devices are commonly used in gas filling and replenishment processes in industries such as industry, emergency rescue, chemical industry, and energy, requiring highly reliable gas connection and sealing to be achieved in a short time.

[0003] Meanwhile, a combined SF6 rapid inflation device, with application number CN201720409849.3, includes an SF6 cylinder, a pressure valve, and an inflation hose. The SF6 cylinder has a valve at its opening, which connects to the inflation hose. The inflation hose has a pressure valve connected to a pressure gauge, and an inflation connector is located at the end of the hose. A connector A is provided on the inflation hose between the valve and the pressure valve, and a connector B is provided on the inflation hose between the pressure valve and the inflation connector. A waterproof mesh is installed inside the inflation hose, located between connector B and the inflation connector. A detachable fixing clamp with a "U" structure is provided at the inflation connector. The inner surface of the "U" structure has an arc-shaped groove. Using this combined SF6 rapid inflation toolbox makes daily GIS equipment inflation work more convenient, greatly improves maintenance efficiency, and ensures safer and more stable operation of GIS equipment, which is of great significance.

[0004] However, the following problems were found in the implementation of the relevant technologies: the docking process is complicated and requires multiple steps, and docking positioning is difficult, which can easily lead to mis-docking or position deviation. At the same time, the backflow control is insufficient, and gas backflow is likely to occur when encountering pressure fluctuations or reverse pressure, which affects the inflation stability and safety, increases the possible risk of leakage, fire and explosion, and reduces inflation efficiency, resulting in increased on-site operation time and reduced production efficiency.

[0005] Therefore, we propose an air replenishment connector for a rapid inflation device. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides an air replenishment connector for a rapid inflation device, which has the advantages of enabling quick one-handed connection, improving operational efficiency, and automatically blocking reverse flow in the event of air shortage or reverse pressure, thus maintaining the continuity of forward flow.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a replenishment connector for a rapid inflation device, comprising a miniature high-pressure ball valve, the output end of which is fixedly connected to a high-pressure air pipe, the other end of which is fixedly connected to a C-type self-locking connector, a connecting pipe installed on the high-pressure air pipe, a flow groove provided inside the connecting pipe, a mounting plate fixedly connected to one end of the flow groove, a first spring fixedly connected to the upper surface of the mounting plate, a top plate fixedly connected to the end of the first spring away from the mounting plate, and a top block fixedly connected to the upper surface of the top plate.

[0008] Preferably, the top block and the first spring are conical. The conical end face can achieve higher self-positioning accuracy when in contact, reducing the risk of leakage caused by initial alignment deviation. When under force, the conical transition helps to distribute the force evenly to the sealing surface, reduce local high stress concentration, and improve service life. The coupling between the conical shape and the spring can achieve a more stable preload, which is convenient for maintaining the sealing state under vibration or pressure fluctuation.

[0009] Preferably, a sealing sheet is fixedly connected to the upper surface of the top block, and the top block is movably connected to the flow channel. The sealing sheet on the top of the top block provides an additional sealing surface, which maintains the sealing performance as the top block moves in the flow channel. The sealing sheet also acts as a buffer layer to reduce the direct friction between the top block and the metal surface of the flow channel, thereby improving durability.

[0010] Preferably, the high-pressure air pipe is a multi-layer composite high-pressure air pipe. The multi-layer composite structure has the characteristics of high strength, high pressure resistance, corrosion resistance, flexibility, and friendly bending radius, which can adapt to complex installation paths. The multi-layer design can bear different working pressure distributions at different levels, reducing the risk of leakage caused by excessive stress on a single layer. The composite material can select suitable interlayer materials to improve adaptability to medium temperature fluctuations and corrosive media.

[0011] Preferably, the C-type self-locking connector is provided with a bidirectional fluororubber sealing ring. The C-type self-locking structure combined with the bidirectional sealing ring improves the sealing reliability under forward inflation and reverse pressure, reduces leakage sources, and the fluororubber has good chemical resistance to various media and a wide operating temperature range, which improves long-term stability. The self-locking structure and the sealing ring work together to alleviate sealing failure caused by changes in mechanical clearance and adapt to repeated insertion and removal scenarios.

[0012] Preferably, the outer surface of the miniature high-pressure ball valve is provided with a control handle, and the other end of the miniature high-pressure ball valve is connected to a gas cylinder. The external control handle facilitates quick manual opening and closing on site, reducing operation steps and time, improving the inflation response speed. The miniature high-pressure ball valve is directly connected to the gas cylinder, reducing intermediate connection points, lowering the risk of leakage and assembly complexity, and improving the overall gas source stability of the system.

[0013] Preferably, an elastic tube is fixedly connected to the upper surface of the mounting plate, and the other end of the elastic tube is fixedly connected to the top block to improve the reliability of the spring structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model enables quick docking with one hand, improving operational efficiency. It allows the other hand to remain stable while operating other steps, simplifying docking procedures, shortening docking time, reducing waiting and adjustment steps, improving overall workflow efficiency, and providing a good sealing effect.

[0016] 2. This utility model, through the cooperation of connecting pipe, flow channel, mounting plate, first spring, top plate and top block, utilizes the preload of the first spring and the action of the top block to automatically block reverse flow in the event of gas interruption or reverse pressure, maintaining the continuity of forward flow. Blocking backflow helps prevent high-pressure gas from flowing back to the inlet side or bypass system, reducing the risk of personnel exposure and equipment damage. Stable flow path and positioning reduce high shear, particle introduction and seal wear during backflow, improving long-term reliability and maintenance cycle. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a rear view schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting pipe of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the connecting pipe of this utility model.

[0021] In the diagram: 1. Miniature high-pressure ball valve; 2. High-pressure air pipe; 3. Type C self-locking connector; 4. Connecting pipe; 5. Flow channel; 6. Mounting plate; 7. First spring; 8. Top plate; 9. Top block; 10. Elastic tube; 11. Control handle. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4As shown, this utility model provides a gas replenishment connector for a rapid gas filling device, including a miniature high-pressure ball valve 1, directly connected to the rear end of the connector to control the gas flow from the gas cylinder to the device. The output end of the miniature high-pressure ball valve 1 is fixedly connected to a high-pressure gas pipe 2 for gas flow. The other end of the high-pressure gas pipe 2 is fixedly connected to a C-type self-locking connector 3. The C-type self-locking connector 3 has a built-in bidirectional fluororubber sealing ring, which achieves mechanical locking with the device's gas filling port through insertion and removal. When separated, the sealing plug is automatically closed by an internal second spring. A connecting pipe 4 is installed on the high-pressure gas pipe 2. A flow groove 5 is provided inside the connecting pipe 4. One end of the flow groove 5 is fixedly connected to a mounting plate 6. A first spring 7 is fixedly connected to the upper surface of the mounting plate 6. A top plate 8 is fixedly connected to the end of the first spring 7 away from the mounting plate 6. A top block 9 is fixedly connected to the upper surface of the top plate 8.

[0024] Specifically, the top block 9 and the first spring 7 are conical.

[0025] Furthermore, a sealing sheet is fixedly connected to the upper surface of the top block 9, and the top block 9 is movably connected to the flow groove 5 to ensure the sealing effect of the top block 9.

[0026] Furthermore, the high-pressure air pipe 2 is specifically a multi-layer composite high-pressure air pipe.

[0027] It is worth noting that the C-type self-locking connector 3 is equipped with a bidirectional fluororubber sealing ring to ensure internal sealing.

[0028] It is worth noting that the outer surface of the miniature high-pressure ball valve 1 is provided with a control handle 11, and the other end of the miniature high-pressure ball valve 1 is connected to a gas cylinder.

[0029] It is worth mentioning that an elastic tube 10 is fixedly connected to the upper surface of the mounting plate 6, and the other end of the elastic tube 10 is fixedly connected to the top block 9 to prevent the first spring 7 from deforming.

[0030] Among them, the miniature high-pressure ball valve 1 and the C-type self-locking connector 3 are existing technologies and will not be described in detail; at the same time, this utility model also includes a power supply, controller, and switch, etc., which are not the main technical points of this patent and will not be described in detail; the "front, back, left, and right" perspectives of this device are as follows: Figure 1 The direction shown in the diagram is the reference.

[0031] Working principle: During use, the C-type self-locking connector 3 is mechanically locked to the equipment's air inlet by plugging and unplugging. When separated, the sealing plug is automatically closed by the second spring. The miniature high-pressure ball valve 1 is directly connected to the rear end of the connector, controlling the gas flow from the gas cylinder to the equipment. It is connected to the gas cylinder through the multi-layer composite high-pressure gas pipe 2, forming a reliable gas transmission channel. At the same time, when the gas flows through the connecting pipe 4, the gas pressure presses down on the top block 9. The top block 9 is compressed by the pressure, and the first spring 7 is compressed by the pressure, causing the top block 9 to move downward, thus exposing the flow groove 5. The gas flows through the flow groove 5 and towards the C-type self-locking connector 3. Conversely, when the gas flows back, the gas pressure pushes the top block 9, causing the top block 9 to move to the other side, thus connecting with the other side of the flow groove 5 and blocking the flow groove 5, thereby preventing the gas from flowing back.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas replenishment connector for a rapid inflation device, comprising a miniature high-pressure ball valve (1), characterized in that: The output end of the miniature high-pressure ball valve (1) is fixedly connected to a high-pressure air pipe (2), and the other end of the high-pressure air pipe (2) is fixedly connected to a C-type self-locking connector (3). A connecting pipe (4) is installed on the high-pressure air pipe (2), and a flow groove (5) is provided inside the connecting pipe (4). A mounting plate (6) is fixedly connected to one end of the flow groove (5), and a first spring (7) is fixedly connected to the upper surface of the mounting plate (6). A top plate (8) is fixedly connected to the end of the first spring (7) away from the mounting plate (6), and a top block (9) is fixedly connected to the upper surface of the top plate (8).

2. The air replenishment connector of the rapid inflation device according to claim 1, characterized in that: The top block (9) and the first spring (7) are conical.

3. The air replenishment connector of the rapid inflation device according to claim 1, characterized in that: A sealing sheet is fixedly connected to the upper surface of the top block (9), and the top block (9) is movably connected to the flow groove (5).

4. The air replenishment connector of the rapid inflation device according to claim 1, characterized in that: The high-pressure air pipe (2) is specifically a multi-layer composite high-pressure air pipe.

5. The air replenishment connector of the rapid inflation device according to claim 1, characterized in that: The C-type self-locking connector (3) is equipped with a bidirectional fluororubber sealing ring.

6. The air replenishment connector of the rapid inflation device according to claim 1, characterized in that: The outer surface of the miniature high-pressure ball valve (1) is provided with a control handle (11), and the other end of the miniature high-pressure ball valve (1) is connected to a gas cylinder.

7. The air replenishment connector of the rapid inflation device according to claim 1, characterized in that: An elastic tube (10) is fixedly connected to the upper surface of the mounting plate (6), and the other end of the elastic tube (10) is fixedly connected to the top block (9).

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