Special high-pressure stop valve for oxygen

Abstract

The utility model discloses a special high-pressure stop valve for oxygen, which comprises a stop valve body, the input end and the output end of the stop valve body are communicated with pipelines, the upper surface of the stop valve body is rotatably connected with an adjusting turntable, the side surface of any pipeline is communicated with a pressure relief cylinder, the inner surface of the pressure relief cylinder is fixedly connected with a spring, and the spring is fixedly connected with the adjusting turntable. The inner surface of the pressure relief cylinder is fixedly connected with a damper, the damper is located in the spring, the upper end of the spring and the upper end of the damper are fixedly connected with a pressure relief piston, and the pressure relief piston is in sliding connection with the inner wall of the pressure relief cylinder. And due to the pressure difference at the two ends of the pipeline, oxygen tends to flow quickly or stop flowing quickly, so that the generated impact force protects the valve and other components in the valve, and the service life of the valve is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a high-pressure shut-off valve for oxygen. Background Art

[0002] Existing high-pressure shut-off valves for oxygen consist of a valve body and a sealing element. However, they lack a buffer component during use. At the moment the valve opens or closes, due to the pressure difference between the two ends of the pipeline, the oxygen tends to flow rapidly or stop flowing abruptly, generating an impact force. This may cause damage or rupture inside the pipeline. For example, a Chinese patent discloses a "high-pressure shut-off valve for oxygen" with application number "200920241691.9". This device includes a valve body and a valve stem. The valve body has an S-shaped cavity with a protrusion at the bend. The top of the protrusion is connected to the end of the valve stem, and the top of the valve stem is connected to a handle. An oil-free device is fitted in the middle of the valve stem. The valve can be opened and closed by rotating the handle. The structure is simple and easy to use. However, it lacks a buffer component during use. At the moment the valve opens or closes, due to the pressure difference between the two ends of the pipeline, the oxygen tends to flow rapidly or stop flowing abruptly, generating an impact force. This may cause damage or rupture inside the pipeline. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a high-pressure shut-off valve for oxygen. By adding a pressure relief cylinder to the side of the pipeline, and through the internal pressure relief piston, spring and damper, when the valve is opened or closed, the pressure relief piston moves accordingly. Through contact with the inner wall of the pressure relief cylinder, the pressure relief piston can absorb part of the impact force. The spring and damper are installed below the pressure relief piston and are in a relaxed state. When the valve is filled with oxygen and an impact force occurs, the spring and damper are compressed and stored to provide a reaction force. This can effectively reduce the impact force generated at the moment the valve is opened or closed, due to the pressure difference at both ends of the pipeline, which causes oxygen to tend to flow rapidly or stop flowing quickly. This protects the valve and other internal components and extends their service life.

[0004] This utility model also provides a high-pressure shut-off valve for oxygen as described above, comprising: a shut-off valve body, wherein the input and output ends of the shut-off valve body are both connected to pipes, an adjusting turntable is rotatably connected to the upper surface of the shut-off valve body, a pressure relief cylinder is connected to the side surface of any of the pipes, a pressure relief hole is provided on the pressure relief cylinder, a spring is fixedly connected to the inner surface of the pressure relief cylinder, a damper is fixedly connected to the inner surface of the pressure relief cylinder, the damper is located inside the spring, a pressure relief piston is fixedly connected to the upper end of the spring and the damper, and the pressure relief piston is slidably connected to the inner wall of the pressure relief cylinder.

[0005] According to the oxygen-specific high-pressure shut-off valve of this utility model, the outer surface of the adjusting turntable is fixedly connected with an anti-slip sleeve.

[0006] According to the oxygen-specific high-pressure shut-off valve of this utility model, a rotating shaft is rotatably connected to the side surface of the adjusting disc, and a rotating rod is fixedly connected to the upper end of the rotating shaft.

[0007] According to the oxygen-specific high-pressure shut-off valve of this utility model, a support rod is fixedly connected to the side surface of the shut-off valve body, and a mounting plate is fixedly connected to the other end of the support rod.

[0008] According to the oxygen-specific high-pressure shut-off valve of this utility model, a connecting flange is fixedly connected to the outer wall of the pipeline, and the connecting flange is provided with mounting holes.

[0009] According to the oxygen-specific high-pressure shut-off valve of this utility model, a protective frame is fixedly connected to the upper surface of the shut-off valve body, and the adjusting turntable is rotatably connected to the upper surface of the protective frame.

[0010] Compared with existing technologies, this oxygen-specific high-pressure shut-off valve features a pressure relief cylinder installed on the side of the pipeline. Internally, a pressure relief piston, spring, and damper work together. When the valve opens or closes, the pressure relief piston moves and absorbs some of the impact force through contact with the inner wall of the pressure relief cylinder. The spring and damper, installed below the pressure relief piston and in a relaxed state, are compressed and store energy when the valve is filled with oxygen, providing a reaction force. This effectively reduces the impact force generated at the moment the valve opens or closes due to the pressure difference between the two ends of the pipeline, which causes oxygen to flow rapidly or stop abruptly. This protects the valve and other internal components, extending their service life. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a front view structural diagram of the oxygen-specific high-pressure shut-off valve of this utility model.

[0013] Figure 2 This is a cross-sectional view of the oxygen-specific high-pressure shut-off valve of this utility model.

[0014] Figure 3 This is a rear view of the oxygen-specific high-pressure shut-off valve of this utility model.

[0015] Figure 4 This is a bottom view of the structure of the oxygen-specific high-pressure shut-off valve of this utility model.

[0016] Legend: 1. Gate valve body; 2. Support rod; 3. Mounting plate; 4. Rotating rod; 5. Rotating shaft; 6. Adjusting disc; 7. Anti-slip sleeve; 8. Pipe; 9. Connecting flange; 10. Pressure relief cylinder; 11. Mounting hole; 12. Protective frame; 13. Spring; 14. Damper; 15. Pressure relief piston; 16. Pressure relief hole. DETAILED DESCRIPTION

[0017] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0018] Reference Figure 1-4 This utility model embodiment of a high-pressure shut-off valve for oxygen includes: a shut-off valve body 1 (shut-off valve is a mature existing technology and will not be described in detail here); a protective frame 12 is fixedly connected to the upper surface of the shut-off valve body 1; an adjusting disc 6 is rotatably connected to the upper surface of the protective frame 12; a support rod 2 is fixedly connected to the side surface of the shut-off valve body 1; a mounting plate 3 is fixedly connected to the other end of the support rod 2; a pipe 8 is connected to both the input and output ends of the shut-off valve body 1; a connecting flange 9 is fixedly connected to the outer wall of the pipe 8; a mounting hole 11 is provided on the connecting flange 9; an adjusting disc 6 is rotatably connected to the upper surface of the shut-off valve body 1 for controlling the shut-off valve; the valve's adjusting disc is a mature existing technology and its principle will not be described in detail here; an anti-slip sleeve 7 is fixedly connected to the outer surface of the adjusting disc 6.

[0019] A rotating shaft 5 is rotatably connected to the side surface of the adjusting turntable 6. A rotating rod 4 is fixedly connected to the upper end of the rotating shaft 5. A pressure relief cylinder 10 is connected to the side surface of any pipe 8 to absorb and buffer the impact of gas inside. A pressure relief hole 16 is provided on the pressure relief cylinder 10 to release gas when the pressure relief piston 15 retracts. A spring 13 is fixedly connected to the inner surface of the pressure relief cylinder 10. A damper 14 is fixedly connected to the inner surface of the pressure relief cylinder 10 to cooperate with the spring 13 for buffering. The damper 14 is located inside the spring 13. A pressure relief piston 15 is fixedly connected to the upper end of the spring 13 and the damper 14 to retract and relieve the impact force after being impacted by gas. The pressure relief piston 15 is slidably connected to the inner wall of the pressure relief cylinder 10.

[0020] Working principle: In use, pipe 8 is connected to an external pipe via connecting flange 9. After connection, the valve is opened or closed by rotating the adjusting disc 6. At the same time as opening and closing, the pressure relief piston 17 moves accordingly. Through contact with the inner wall of the pressure relief cylinder 10, the pressure relief piston 17 can absorb part of the impact force. The spring 19 and damper 18 are installed below the pressure relief piston 17 and are in a relaxed state. When the valve is filled with oxygen and an impact force occurs, the spring 19 and damper 18 are compressed and stored to provide a reaction force, which can effectively reduce the impact force generated at the moment of valve opening or closing due to the pressure difference at both ends of the pipe, where oxygen tends to flow rapidly or stops flowing quickly.

[0021] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A high-pressure stop valve for oxygen, comprising a stop valve body (1), an adjusting dial (6), a valve stem and a valve disc, characterized in that: include: A stop valve body (1), wherein the input end and the output end of the stop valve body (1) are both connected to a pipeline (8), the upper surface of the stop valve body (1) is rotatably connected to an adjusting dial (6), any side surface of the pipeline (8) is connected to a pressure relief cylinder (10), a pressure relief hole (16) is provided on the pressure relief cylinder (10), a spring (13) is fixedly connected to the inner surface of the pressure relief cylinder (10), a damper (14) is fixedly connected to the inner surface of the pressure relief cylinder (10), the damper (14) is located inside the spring (13), the upper ends of the spring (13) and the damper (14) are fixedly connected to a pressure relief piston (15), and the pressure relief piston (15) is slidably connected to the inner wall of the pressure relief cylinder (10).

2. The oxygen-specific high-pressure stop valve according to claim 1, characterized in that: An anti-slip sleeve (7) is fixedly connected to the outer surface of the adjusting dial (6).

3. The oxygen-specific high-pressure stop valve according to claim 1, characterized in that: The side surface of the adjusting turntable (6) is rotatably connected to a rotating shaft (5), and the upper end of the rotating shaft (5) is fixedly connected to a rotating rod (4).

4. The oxygen-specific high-pressure stop valve according to claim 1, characterized in that: A support rod (2) is fixedly connected to the side surface of the stop valve body (1), and a mounting plate (3) is fixedly connected to the other end of the support rod (2).

5. The oxygen-specific high-pressure stop valve according to claim 1, characterized in that: A connecting flange (9) is fixedly connected to the outer wall of the pipeline (8), and a mounting hole (11) is provided on the connecting flange (9).

6. The oxygen-specific high-pressure stop valve according to claim 1, characterized in that: The upper surface of the stop valve body (1) is fixedly connected to a protective frame (12), and the adjusting dial (6) is rotatably connected to the upper surface of the protective frame (12).

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