Nitrogen charging tool adaptive to various nitrogen charging safety valves

Abstract

The utility model belongs to the technical field of nitrogen charging safety valve tools, and particularly relates to a nitrogen charging tool adaptive to various nitrogen charging safety valves, which comprises a base and a cylindrical barrel movably connected with the base, two sides of the top of the barrel are respectively provided with a lug plate, the top of the barrel is provided with an upper cover component, the upper cover component is clamped with the lug plates through U-shaped clamps, and the upper cover component is connected with the lug plates through the U-shaped clamps. The center of the upper cover assembly is movably connected with a replaceable connector, the replaceable connector is connected with a nitrogen filling safety valve, and the nitrogen filling device has the advantages of being simple in structure and convenient to use.

Description

Technical Field

[0001] This utility model belongs to the technical field of nitrogen-filling safety valve tooling, and in particular relates to a nitrogen-filling tooling that is compatible with various nitrogen-filling safety valves. Background Technology

[0002] The development of nitrogen-filled safety valves stems primarily from the continuous pursuit of safety and reliability, especially in applications requiring high pressure and high temperature. With advancements in industrial technology and rising safety standards, nitrogen-filled safety valves have gradually become essential safety equipment.

[0003] With the development of hydraulic support technology and the increasing size of supports, the working resistance of the columns is growing, requiring higher stability from the safety valves protecting the columns. Currently, ordinary spring-loaded safety valves are prone to spring failure under high and repeated impacts, resulting in ineffective column protection. Nitrogen-filled safety valves will be increasingly chosen in the future, although they are currently relatively expensive, leading to a high volume of maintenance work. Since the opening pressure of nitrogen-filled safety valves is generally between 40MPa and 50MPa, designing a more efficient, multi-brand compatible nitrogen-filling fixture that effectively protects the personnel and equipment while ensuring the safety of the nitrogen-filling process is crucial. Summary of the Invention

[0004] The purpose of this invention is to provide a nitrogen filling fixture that is compatible with various nitrogen filling safety valves.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A nitrogen filling fixture adapted to various nitrogen filling safety valves includes a base and a cylindrical body movably connected to the base. Each of the two sides of the top of the cylindrical body is provided with an ear plate, and a top cover assembly is provided on the top of the cylindrical body. The top cover assembly is connected to the ear plates by a U-shaped clip. A replaceable connector is movably connected to the center of the top cover assembly, and the replaceable connector is connected to the nitrogen filling safety valve.

[0007] Furthermore, the upper cover assembly includes a cover body with a central receiving cavity, and also includes vertical insertion portions integrally disposed at both ends of the cover body, each vertical insertion portion having two through holes.

[0008] Furthermore, the ear plates are symmetrically distributed on both sides of the cylinder and fixedly connected to the cylinder. Each ear plate has an arc-shaped bottom plate and two parallel vertical plates. Each vertical plate is provided with a snap-fit ​​hole that is compatible with the U-shaped card.

[0009] Furthermore, the vertical insertion part is located between the two vertical plates of the ear plate and the two are fixed by a U-shaped clip.

[0010] Furthermore, the base is hollow at the center, and the nitrogen-filling safety valve passes through the base and is located inside the cylinder, with its top connected to a replaceable connector for nitrogen filling.

[0011] The advantages of this utility model are:

[0012] 1. Since the connector on the top of the tooling is a replaceable connector, simply replacing this connector can accommodate nitrogen-filled safety valves of different brands, making it more adaptable.

[0013] 2. The top cover assembly is fixed to the cylinder body by ear plates and U-shaped clips. This design allows for quick removal of the U-shaped clips and replacement of the top cover assembly with the next safety valve after one safety valve has been filled, making the nitrogen filling process convenient and quick.

[0014] 3. Because it has a base, the device can be placed on a platform without having to move it back and forth, which improves work efficiency. In addition, the structure of this tooling means that the nitrogen filling safety valve is located inside the cylinder during use, which can protect the column-type nitrogen filling safety valve and make the entire safety valve safer to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a nitrogen-filling tool that is compatible with various nitrogen-filling safety valves according to this utility model.

[0016] Figure 2 This is a structural schematic diagram of the base in this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the cylindrical body in this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the middle ear plate of this utility model.

[0019] Figure 5 This is a schematic diagram of the U-shaped card in this utility model.

[0020] Figure 6 This is a structural schematic diagram of the upper cover assembly in this utility model.

[0021] Figure 7 This is a schematic diagram of two replaceable connectors in this utility model. Detailed Implementation

[0022] like Figure 1-7As shown, a nitrogen filling fixture adapted to various nitrogen filling safety valves includes a base 1, a cylindrical body 2 movably connected to the base, an ear plate 3 on each side of the top of the body 2, and a top cover assembly 5 on the top of the body. The top cover assembly 5 includes a cover 51 with a central receiving cavity, and vertical insertion parts 52 integrally formed at both ends of the cover. Each vertical insertion part has two through holes. The ear plates 3 are symmetrically distributed on both sides of the body and fixedly connected to the body. Each ear plate has an arc-shaped bottom. The upper cover assembly consists of a plate 31 and two parallel vertical plates 32, each with a snap-fit ​​hole for a U-shaped clip. The upper cover assembly and the ear plate are snapped together by a U-shaped clip 4. Specifically, the vertical insertion part 52 is located between the two vertical plates 32 of the ear plate 3, and the two are fixed together by a U-shaped clip 4. A replaceable connector 6 is movably connected to the center of the upper cover assembly, and the replaceable connector is connected to the nitrogen filling safety valve. The center of the base is hollow, and the nitrogen filling safety valve passes through the base and is located inside the cylinder, with its top connected to the replaceable connector for nitrogen filling.

[0023] In practical use, there are slight differences in valve body diameter and length among common nitrogen-filling safety valve brands. Based on several brands encountered so far, the valve body diameter differs by approximately 2-3mm, and the length is within 7mm. The upper connector of the tooling is replaceable; simply changing this connector allows for use with different brands of nitrogen-filling safety valves. The upper cover assembly is fixed to the cylinder via ear plates and U-shaped clips, allowing for quick removal of the U-shaped clips and upper cover assembly to install the next safety valve after filling one. A base is included, allowing placement on a platform without repositioning, thus improving work efficiency.

Claims

1. A nitrogen filling tooling suitable for adapting a plurality of nitrogen filling safety valves, characterized in that: The application relates to a nitrogen filling safety valve, which comprises a base, a cylindrical barrel movably connected with the base, two ear plates respectively arranged at the top of the barrel, an upper cover assembly arranged at the top of the barrel, and a replaceable joint movably connected with the center of the upper cover assembly and connected with a nitrogen filling safety valve.

2. The nitrogen filling tooling adapted to multiple types of nitrogen filling safety valves according to claim 1, characterized in that: The upper cover assembly comprises a cover body with a containing cavity in the center, and vertical insertion parts integrally arranged at the two ends of the cover body, and two through holes are arranged on each vertical insertion part.

3. The nitrogen filling tooling adapted to fill a plurality of nitrogen safety valves of claim 2, wherein: The ear plates are symmetrically arranged at the two sides of the barrel and fixedly connected with the barrel, each ear plate has an arc-shaped bottom plate and two vertically arranged vertical plates, and a clamping hole matched with the U-shaped clamps is arranged on each vertical plate.

4. The nitrogen filling tooling adapted to fill a plurality of nitrogen safety valves of claim 3, wherein: The vertical insertion parts are arranged between the two vertical plates of the ear plate and are fixed through the U-shaped clamps.

5. The nitrogen filling tool suitable for adapting various nitrogen filling safety valves according to claim 3, characterized in that: The center of the base is hollow.

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