Natural gas emergency shut-off valve coil

Abstract

This utility model provides a natural gas emergency shut-off valve coil, including a coil protective shell, an electromagnetic coil, a coil switching mechanism, a limit ball, a manual switching cylinder, a manual rotating column, and a disposable connecting piece. Four electromagnetic coils are installed inside the coil protective shell. A limit ball is installed on the lower surface of the coil protective shell. A coil switching mechanism is located at the lower end of the coil protective shell, and a manual switching cylinder is installed on the upper surface of the coil protective shell. This design solves the problem that the electromagnetic coils of the shut-off valve in the original device may malfunction after prolonged use, leading to the failure of the emergency shut-off valve and resulting in an inability to shut off, thus causing an accident. This utility model has a reasonable structure. Through the cooperation of the coil switching mechanism and the manual rotating column, the electromagnetic coil can be quickly replaced after the individual electromagnetic coil is damaged, ensuring the shut-off of natural gas. Furthermore, the use of two levels of safety, automatic and manual switching, effectively prevents natural gas leakage accidents.

Description

Technical Field

[0001] This utility model is a natural gas emergency shut-off valve coil, belonging to the technical field of natural gas-specific emergency shut-off valves. Background Technology

[0002] Emergency shut-off valves boast excellent technical performance, low load loss, and high reliability. Suitable for combustible gases such as coal gas, natural gas, and liquefied petroleum gas, they are widely used in gas supply networks, gas-fired power plants, gas boiler rooms, and residential safety facilities. These emergency shut-off valves are normally open, pulse-triggered solenoid valves with emergency self-locking and manual reset functions.

[0003] Chinese patent CN208397383U proposes a natural gas emergency shut-off valve with a union flange. The union flange and valve body are designed to be detachable, allowing the union flange to adapt to various installation environments while maintaining a perfectly horizontal valve body. This results in greater stability during later use, saves pipeline installation time and costs, facilitates maintenance and replacement, and extends the service life. However, the solenoid coil of the shut-off valve may malfunction after prolonged use, leading to valve failure and potential accidents. There is an urgent need for a natural gas emergency shut-off valve coil to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a natural gas emergency shut-off valve coil to solve the problems mentioned in the background. This invention has a reasonable structure, and through the cooperation of the coil switching mechanism and the manual rotating column, it can quickly replace the electromagnetic coil after the single electromagnetic coil is damaged, ensuring the shut-off of natural gas. Furthermore, it adopts a two-level safety system of automatic and manual switching, which can effectively prevent natural gas leakage accidents.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a natural gas emergency shut-off valve coil, comprising a coil protective shell, an electromagnetic coil, a coil switching mechanism, a limit ball, a manual switching cylinder, a manual rotating column, and a disposable connecting piece. Four electromagnetic coils are installed inside the coil protective shell. A limit ball is installed on the lower surface of the coil protective shell. A coil switching mechanism is located at the lower end of the coil protective shell. A manual switching cylinder is installed on the upper surface of the coil protective shell. A manual rotating column is located inside the manual switching cylinder. The coil switching mechanism includes a switching shell, a cutting... The system includes a base, drive wheel, drive plate, drive shaft, telescopic cylinder, active connecting block, driven connecting block, and drive motor. A switching base is mounted on the lower surface of the coil protective shell. A switching outer shell is located at the lower end of the switching base. A drive wheel is located above the switching outer shell. A drive plate is mounted on the lower surface of the drive wheel. A drive shaft is mounted on the lower surface of the drive plate. A telescopic cylinder is mounted on the lower surface of the drive shaft. An active connecting block is mounted on the lower surface of the telescopic cylinder. A driven connecting block is mounted on the lower surface of the active connecting block. A drive motor is installed inside the switching outer shell.

[0006] Furthermore, a limiting plate is installed on the side surface of the switching housing, a limiting tube is installed on the upper surface of the limiting plate, a return spring is installed inside the limiting tube, a limiting ball is located inside the limiting tube, the upper surface of the return spring is fixedly connected to the limiting ball, and the lower surface of the return spring is fixedly connected to the inside of the limiting tube.

[0007] Furthermore, the lower surface of the coil protective shell is provided with four limiting grooves, each of which is 180° apart with respect to the coil protective shell as an axis, and the upper end of the limiting ball is located inside one of the limiting grooves.

[0008] Furthermore, the upper surface of the switching base is provided with four drive slots, and the lower surface of the switching base is equipped with a rotating column. The four drive slots are 180° apart with the rotating column as the axis. The lower end of the rotating column is located inside the switching housing, and the rotating column is connected to the switching housing through a bearing.

[0009] Furthermore, a drive rod is mounted on the upper surface of the drive plate. The diameter of the drive rod is the same as the width of the drive groove. The drive rod is located inside the drive groove. The lower surface of the drive wheel is fixedly connected to the upper surface of the drive plate. The upper surface of the drive shaft is fixedly connected to the lower surface of the drive plate.

[0010] Furthermore, the telescopic cylinder is installed inside the drive shaft, the active connecting block and the driven connecting block mesh with each other, and the drive motor is connected to the lower surface of the driven connecting block through the motor shaft.

[0011] Furthermore, the manual rotating column and the manual switching cylinder are connected by four disposable connecting pieces. A square block is installed on the lower surface of the manual rotating column. A coil partition plate is installed inside the coil protective shell. A manual switching column is installed inside the coil protective shell. A square groove is opened on the upper surface of the manual switching column.

[0012] The beneficial effects of this utility model are as follows: The natural gas emergency shut-off valve coil of this utility model, due to the addition of a switching shell, switching base, drive wheel, drive plate, drive shaft, telescopic cylinder, active connecting block, driven connecting block and drive motor, will first start the drive motor and telescopic cylinder when the natural gas shut-off valve needs to be shut off urgently and the original electromagnetic coil is damaged. The telescopic cylinder pushes the active connecting block and the driven connecting block to mesh with each other, so that the drive shaft, drive plate and drive wheel rotate with the drive motor. The drive rod drives the switching base to rotate 90°, switching to another electromagnetic coil, and then energizing the other electromagnetic coil. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the structure of the natural gas emergency shut-off valve coil of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the protective cover at the upper end of the coil in the natural gas emergency shut-off valve coil of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the limiting tube in the coil of the natural gas emergency shut-off valve of this utility model;

[0017] Figure 4 This is a top view of the coil switching mechanism in the natural gas emergency shut-off valve coil of this utility model;

[0018] Figure 5 This is a cross-sectional schematic diagram of the switching housing in the natural gas emergency shut-off valve coil of this utility model;

[0019] In the diagram: 1-Coil protective shell, 11-Coil partition plate, 12-Manual switching column, 2-Electromagnetic coil, 3-Coil switching mechanism, 31-Switching shell, 32-Switching base, 321-Drive slot, 322-Rotating column, 33-Drive wheel, 34-Drive plate, 341-Drive rod, 35-Drive shaft, 36-Telescopic cylinder, 37-Active connecting block, 38-Driven connecting block, 39-Drive motor, 4-Limit ball, 41-Reset spring, 42-Limit tube, 43-Limit plate, 5-Manual switching tube, 51-Disposable connecting piece, 6-Manual rotating column. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figures 1-5 This utility model provides a technical solution: a natural gas emergency shut-off valve coil, including a coil protective shell 1, an electromagnetic coil 2, a coil switching mechanism 3, a limit ball 4, a manual switching cylinder 5, a manual rotating column 6, and a disposable connecting piece 51. Four electromagnetic coils 2 are installed inside the coil protective shell 1. A limit ball 4 is installed on the lower surface of the coil protective shell 1. The coil switching mechanism 3 is located at the lower end of the coil protective shell 1. A manual switching cylinder 5 is installed on the upper surface of the coil protective shell 1. A manual rotating column 6 is located inside the manual switching cylinder 5. The coil switching mechanism 3 includes a switching shell 31, a switching base 32, a drive wheel 33, a drive plate 34, a drive shaft 35, a telescopic cylinder 36, an active connecting block 37, a driven connecting block 38, and a drive shaft 39. The switch base 32 is mounted on the lower surface of the coil protective shell 1. A switch housing 31 is set at the lower end of the switch base 32. A drive wheel 33 is set on the upper part of the switch housing 31. A drive plate 34 is mounted on the lower surface of the drive wheel 33. A drive shaft 35 is mounted on the lower surface of the drive plate 34. A telescopic cylinder 36 is mounted on the lower surface of the drive shaft 35. An active connecting block 37 is mounted on the lower surface of the telescopic cylinder 36. A driven connecting block 38 is mounted on the lower surface of the active connecting block 37. The drive motor 39 is installed inside the switch housing 31. This design solves the problem that the electromagnetic coil of the original device's shut-off valve may malfunction after long-term use, causing the emergency shut-off valve to fail and resulting in an inability to shut off, thus causing an accident.

[0022] As the first embodiment of this utility model: a limiting plate 43 is installed on the side surface of the switching housing 31, a limiting tube 42 is installed on the upper surface of the limiting plate 43, a return spring 41 is installed inside the limiting tube 42, a limiting ball 4 is located inside the limiting tube 42, the upper surface of the return spring 41 is fixedly connected to the limiting ball 4, and the lower surface of the return spring 41 is fixedly connected to the inside of the limiting tube 42. By adding the limiting ball 4, it can be ensured that the electromagnetic coil 2 can rotate a fixed angle each time it is manually rotated when the coil protective housing 1 is rotated. Four limiting grooves are opened on the lower surface of the coil protective housing 1, each limiting groove is 180° apart with respect to the coil protective housing 1 as the axis, and the upper end of the limiting ball 4 is located inside one limiting groove. Four driving grooves 321 are opened on the upper surface of the switching base 32, and a rotating column 322 is installed on the lower surface of the switching base 32. The four driving grooves 321 are 180° apart with respect to the rotating column 322 as the axis, and the lower end of the rotating column 322 is located inside one limiting groove. Inside the switching housing 31, the rotating column 322 is connected to the switching housing 31 via bearings. The upper surface of the drive plate 34 is equipped with a drive rod 341. The diameter of the drive rod 341 is the same as the width of the drive groove 321. The drive rod 341 is located inside the drive groove 321. The lower surface of the drive wheel 33 is fixedly connected to the upper surface of the drive plate 34. The upper surface of the drive shaft 35 is fixedly connected to the lower surface of the drive plate 34. The telescopic cylinder 36 is installed inside the drive shaft 35. The active connecting block 37 and the driven connecting block 38 mesh with each other. The drive motor 39 is connected to the lower surface of the driven connecting block 38 via a motor shaft. The manual rotating column 6 and the manual switching cylinder 5 are connected by four disposable connecting pieces 51. A square block is installed on the lower surface of the manual rotating column 6. A coil partition plate 11 is installed inside the coil protective housing 1. A manual switching column 12 is installed inside the coil protective housing 1. A square groove is opened on the upper surface of the manual switching column 12.

[0023] As a second embodiment of this utility model: when the natural gas shut-off valve needs to be shut off urgently and the original electromagnetic coil 2 is damaged, the drive motor 39 and the telescopic cylinder 36 will be started first. The telescopic cylinder 36 pushes the active connecting block 37 and the driven connecting block 38 to mesh with each other, so that the drive shaft 35, the drive plate 34 and the drive wheel 33 rotate with the drive motor 39. The drive rod 341 drives the switching base 32 to rotate 90°, switching to another electromagnetic coil 2, and energizing the other electromagnetic coil 2. When either the drive motor 39 or the telescopic cylinder 36 is damaged, the operator needs to pinch the manual rotating column 6 and press it down to break the disposable connecting piece 51 until the lower end of the manual rotating column 6 is embedded in the upper surface of the manual switching column 12. Then rotate the coil protective shell 1. When the coil protective shell 1 rotates 90°, the limit ball 4 will be locked into the limit groove again, and the other electromagnetic coil 2 can be switched.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A natural gas emergency shut-off valve coil, comprising a coil protective shell, an electromagnetic coil, a coil switching mechanism, a limit ball, a manual switching cylinder, a manual rotating column, and a disposable connecting piece, characterized in that: The coil protective shell has four electromagnetic coils installed inside. A limit ball is installed on the lower surface of the coil protective shell. A coil switching mechanism is provided at the lower end of the coil protective shell. A manual switching cylinder is installed on the upper surface of the coil protective shell. A manual rotating column is provided inside the manual switching cylinder. The coil switching mechanism includes a switching housing, a switching base, a drive wheel, a drive plate, a drive shaft, a telescopic cylinder, an active connecting block, a driven connecting block, and a drive motor. The switching base is mounted on the lower surface of the coil protective housing, and the switching housing is located at the lower end of the switching base. The drive wheel is located above the switching housing, the drive plate is mounted on the lower surface of the drive wheel, the drive shaft is mounted on the lower surface of the drive plate, the telescopic cylinder is mounted on the lower surface of the drive shaft, the active connecting block is mounted on the lower surface of the telescopic cylinder, the driven connecting block is mounted on the lower surface of the active connecting block, and the drive motor is installed inside the switching housing.

2. The natural gas emergency shut-off valve coil according to claim 1, characterized in that: A limiting plate is installed on the side surface of the switching shell, a limiting tube is installed on the upper surface of the limiting plate, a return spring is installed inside the limiting tube, a limiting ball is located inside the limiting tube, the upper surface of the return spring is fixedly connected to the limiting ball, and the lower surface of the return spring is fixedly connected to the inside of the limiting tube.

3. The natural gas emergency shut-off valve coil according to claim 2, characterized in that: The lower surface of the coil protective shell is provided with four limiting grooves, each of which is 180° apart with respect to the coil protective shell as the axis, and the upper end of the limiting ball is located inside one of the limiting grooves.

4. The natural gas emergency shut-off valve coil according to claim 1, characterized in that: The upper surface of the switching base has four drive slots, and the lower surface of the switching base is equipped with a rotating column. The four drive slots are 180° apart with the rotating column as the axis. The lower end of the rotating column is located inside the switching housing, and the rotating column is connected to the switching housing through a bearing.

5. The natural gas emergency shut-off valve coil according to claim 4, characterized in that: A drive rod is mounted on the upper surface of the drive plate. The diameter of the drive rod is the same as the width of the drive groove. The drive rod is located inside the drive groove. The lower surface of the drive wheel is fixedly connected to the upper surface of the drive plate. The upper surface of the drive shaft is fixedly connected to the lower surface of the drive plate.

6. The natural gas emergency shut-off valve coil according to claim 1, characterized in that: The telescopic cylinder is installed inside the drive shaft, the active connecting block and the driven connecting block mesh with each other, and the drive motor is connected to the lower surface of the driven connecting block through the motor shaft.

7. The natural gas emergency shut-off valve coil according to claim 1, characterized in that: The manual rotating column and the manual switching cylinder are connected by four disposable connecting pieces. A square block is installed on the lower surface of the manual rotating column. A coil partition plate is installed inside the coil protective shell. A manual switching column is installed inside the coil protective shell. A square groove is opened on the upper surface of the manual switching column.

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