Valve capable of being automatically closed in case of leakage of petroleum gas steel cylinder

Abstract

The invention relates to the technical field of cylinder valves, and discloses a valve capable of automatically closing during leakage of a petroleum gas steel cylinder, the valve comprises a control box and a valve assembly, the rear end of the inner side of the control box is fixedly connected with a circuit board, the middle of the control box is fixedly connected with a motor, and the output end of the motor is fixedly connected with a driving magnet; a driven magnet is fixedly connected to the output end, close to the tail end, of the motor. An automatic valve element is jacked up through a spring 11, liquefied gas can normally flow out from the position between the automatic valve element 9 and an automatic valve seat 14, a circuit board 1 rotates by 90 degrees in the forward direction by driving a gear motor 3, when a driving magnet 5 rotates, a driven magnet 6 is driven to rotate at the same time, and a shifting rod 8 installed on the magnets synchronously rotates; the automatic valve element 9 is tightly attached to the automatic valve seat 10 so that a gas source of the gas cylinder can be closed in the gas cylinder, meanwhile, an alarm signal is sent out, the APP gives alarm information to a user, and if faults are removed, the internal valve can be opened again on the APP for normal use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bottle valve, in particular to a valve for automatically closing petroleum gas steel cylinder in case of leakage. BACKGROUND

[0002] For many years, liquefied petroleum gas as a fuel, with convenient, fast and clean advantages into people's life. The existing coal gas leakage detection is mainly to install a gas leakage alarm on the pipeline, when the gas leaks, the sound alarm, but this can not be a good solution, the alarm sound after people to close or handle, when people are not at home, can not effectively prevent accidents, and if the gas cylinder angle valve connection leaks can not play a closing protection. Therefore, it is necessary to develop a more reliable performance of the intelligent limit, leakage automatically close the valve to ensure the safety of people's life and property.

[0003] The existing leakage detection device on the market has high cost, complex structure, needs 220V power supply (the heating of the electromagnetic valve in action when leaking is also a hidden danger, if power failure, the function fails), and the lengthening leads to the pressure reducing valve exposed too much from the steel cylinder, which has the possibility of collision and leakage. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a valve for automatically closing petroleum gas steel cylinder in case of leakage, which solves the problems of the existing leakage detection device on the market, such as high cost, complex structure, need for 220V power supply, heating of the electromagnetic valve in action when leaking is also a hidden danger, if power failure, the function fails, and the lengthening leads to the pressure reducing valve exposed too much from the steel cylinder, which has the possibility of collision and leakage.

[0005] To achieve the above object, the present application is realized by the following technical scheme: a valve for automatically closing petroleum gas steel cylinder in case of leakage, comprising a control box and a valve assembly, the inner side of the control box is fixedly connected with a circuit board at the rear end, the middle part of the control box is fixedly connected with a motor, the output end of the motor is fixedly connected with a driving magnet, the output end of the motor is fixedly connected with a driven magnet near the distal end, the right side of the control box is fixedly connected with a lever mounting seat, the inner side of the lever mounting seat is provided with a lever, the inner side of the lever is fixedly connected with an automatic valve core, the bottom of the valve assembly is provided with an automatic valve base, and the inner side of the valve assembly is provided with a spring in the middle and lower part.

[0006] Preferably, the automatic valve core and the valve assembly are fixedly connected with an O-shaped sealing ring one and an O-shaped sealing ring two in sequence at the adjacent side.

[0007] Preferably, the inner side of the control box is fixedly connected with a battery at the front end, and the battery is electrically connected with the circuit board and the motor respectively.

[0008] Preferably, the output end of the control box is connected to the left side of the valve assembly.

[0009] Preferably, a knob is provided on the top of the valve assembly.

[0010] Working principle: The valve body of the automatic valve that automatically closes when the LPG cylinder leaks contains an automatic valve core 9 and an automatic valve seat 14 that can switch the gas supply. In the normal state, the convex surface of the lever 8 faces upwards, and the spring 11 pushes up the automatic valve core, leaving a 2-3mm gap between the valve core and the valve seat 14, allowing LPG to flow normally between them. When the sensor detects that the LPG concentration outside the cylinder is too high, the circuit board 1 drives the reduction motor 3 to rotate 90° clockwise. The angle is limited by a limit switch installed on the motor. The circuit board detects the motor current. The system works as follows: when the motor rotates forward to the closed limit position, the current increases due to the stall, reaching the closed limit position; when it rotates backward to the open limit position, the reverse current increases, reaching the open limit position. Due to the magnetic field, when the active magnet 5 rotates, it simultaneously drives the driven magnet 6 to rotate. The lever 8 mounted on the magnet rotates synchronously, causing the protrusion on the lever 8 to press down the automatic valve core 9, making the automatic valve core 9 tightly fit against the automatic valve seat 10, thereby shutting off the gas supply from the gas cylinder internally. At the same time, an alarm signal is issued, and the alarm information is given to the user on the APP. If the fault is resolved, the internal valve can be reopened on the APP for normal use.

[0011] This invention provides a valve for automatically shutting off leaks in LPG cylinders. It offers the following advantages:

[0012] This invention relates to an automatic valve that automatically shuts off when a gas cylinder leaks. The valve body contains an automatic valve core 9 and an automatic valve seat 14 that control the flow of gas. In the normal operating state, the lever 8 has its convex surface facing upwards, and a spring 11 pushes up the automatic valve core, creating a 2-3mm gap between the valve core and the valve seat 14, allowing liquefied gas to flow normally between them. When a sensor detects excessively high liquefied gas concentration outside the cylinder, the circuit board 1 drives a reduction motor 3 to rotate 90° clockwise. The angle is limited by a limit switch installed on the motor. The circuit board detects the actual motor current. When the motor rotates forward to the closed limit position, the current increases due to the stall, reaching the closed limit position. When it rotates backward to the open limit position, the reverse current increases, reaching the open limit position. Due to the magnetic field, when the active magnet 5 rotates, it simultaneously drives the driven magnet 6 to rotate. The lever 8 mounted on the magnet rotates synchronously, causing the protrusion on the lever 8 to press down the automatic valve core 9, making the automatic valve core 9 tightly fit against the automatic valve seat 10, thereby shutting off the gas supply from the gas cylinder internally. At the same time, an alarm signal is issued, and the alarm information is given to the user on the APP. If the fault is resolved, the internal valve can be reopened on the APP for normal use. Attached Figure Description

[0013] Figure 1 This is a front view of the valve of the present invention;

[0014] Figure 2 This is a perspective view of the valve of the present invention;

[0015] Figure 3 This is a schematic diagram of the valve structure of the present invention.

[0016] The components include: 1. Circuit board; 2. Battery; 3. Motor; 4. Control box; 5. Active magnet; 6. Driven magnet; 7. Lever mounting base; 8. Lever; 9. Automatic valve core; 10. Valve assembly; 11. Spring; 12. O-ring one; 13. O-ring two; 14. Automatic valve base; 15. Knob. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example:

[0019] Please see the appendix Figure 1 -Appendix Figure 3 This invention provides an automatic shut-off valve for leaking liquefied petroleum gas cylinders, comprising a control box 4 and a valve assembly 10. A circuit board 1 is fixedly connected to the inner rear end of the control box 4. A motor 3 is fixedly connected to the middle of the control box 4. An active magnet 5 is fixedly connected to the output end of the motor 3. A driven magnet 6 is fixedly connected to the output end of the motor 3 near its end. A lever mounting seat 7 is fixedly connected to the right side of the control box 4. A lever 8 is provided inside the lever mounting seat 7. An automatic valve core 9 is fixedly connected to the inside of the lever 8. An automatic valve base 14 is installed at the bottom of the valve assembly 10. A spring 11 is provided in the lower middle part of the inner side of the valve assembly 10.

[0020] The automatic valve core 9 and the valve assembly 10 are respectively fixedly connected to O-ring 12 and O-ring 2 13 on the adjacent side.

[0021] A battery 2 is fixedly connected to the inner front end of the control box 4. The battery 2 is electrically connected to the circuit board 1 and the motor 3 respectively.

[0022] The output end of control box 4 is connected to the left side of valve assembly 10.

[0023] A knob 15 is provided on the top of the valve assembly 10.

[0024] The valve body of the automatic shut-off valve for leaking LPG cylinders contains an automatic valve core 9 and an automatic valve seat 14 that can switch the gas supply. In the normal state, the convex surface of the lever 8 faces upwards, and the spring 11 pushes up the automatic valve core, creating a 2-3mm gap between the valve core and the valve seat 14, allowing LPG to flow normally between them. When the sensor detects that the LPG concentration outside the cylinder is too high, the circuit board 1 drives the reduction motor 3 to rotate 90° clockwise. The angle is limited by a limit switch installed on the motor, and the circuit board detects the motor current. When the motor rotates forward to the closed limit position, the current increases due to the stall, reaching the closed limit position. When it rotates backward to the open limit position, the reverse current increases, reaching the open limit position. Due to the magnetic field, when the active magnet 5 rotates, it simultaneously drives the driven magnet 6 to rotate. The lever 8 mounted on the magnet rotates synchronously, causing the protrusion on the lever 8 to press down the automatic valve core 9, making the automatic valve core 9 tightly fit against the automatic valve seat 10, thereby shutting off the gas supply from the gas cylinder internally. At the same time, an alarm signal is issued, and the alarm information is given to the user on the APP. If the fault is resolved, the internal valve can be reopened on the APP for normal use.

[0025] It adopts magnetic field transmission to achieve complete gas-electric isolation, and the metal control box is sealed with explosion-proof treatment. The valve status can be known through the Internet of Things control mobile APP. The unique angle valve can directly shut off the gas source, so that the gas source is shut off immediately upon detection of leakage and alarm is triggered to protect people's safety and property.

[0026] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve for automatically shutting off leakage from a petroleum gas cylinder, comprising a control box (4) and a valve assembly (10), characterized in that: A circuit board (1) is fixedly connected to the inner rear end of the control box (4). A motor (3) is fixedly connected to the middle of the control box (4). An active magnet (5) is fixedly connected to the output end of the motor (3). A driven magnet (6) is fixedly connected to the output end of the motor (3) near the end. A lever mounting base (7) is fixedly connected to the right side of the control box (4). A lever (8) is provided on the inner side of the lever (7). An automatic valve core (9) is fixedly connected to the inner side of the lever (8). An automatic valve base (14) is installed at the bottom of the valve assembly (10). A spring (11) is provided in the lower middle part of the inner side of the valve assembly (10).

2. The valve for automatic shut-off of a leaking LPG cylinder according to claim 1, characterized in that: The automatic valve core (9) and valve assembly (10) are sequentially fixedly connected to an O-ring one (12) and an O-ring two (13) on adjacent sides.

3. The valve for automatic shut-off of a leaking LPG cylinder according to claim 1, characterized in that: A battery (2) is fixedly connected to the inner front end of the control box (4), and the battery (2) is electrically connected to the circuit board (1) and the motor (3) respectively.

4. The valve for automatic shut-off of a leaking LPG cylinder according to claim 1, characterized in that: The output end of the control box (4) is connected to the left side of the valve assembly (10).

5. The valve for automatic shut-off of a leaking LPG cylinder according to claim 1, characterized in that: A knob (15) is provided on the top of the valve assembly (10).

Images