Bottled liquefied gas emergency alarm cut-off system with positioning and remote networking control and self-charging method

Abstract

The present application relates to the technical field of gas safety, and more particularly to a bottled liquefied gas emergency alarm and cut-off system with positioning and remote networking control and a self-charging method, comprising a liquefied gas cylinder, an automatic ball valve cut-off device, a liquefied gas leakage alarm, a positioning module and a mobile phone APP. The automatic ball valve cut-off device is arranged between the hand valve and the pressure reducing valve of the liquefied gas cylinder, directly cutting off the upstream gas source pipeline with the highest leakage risk, thus solving the technical problem that the traditional device cannot cut off the leakage of the pipeline from the root, and completely avoiding the safety hazard of continuous leakage. The alarm integrates gas detection, Bluetooth and wireless communication functions, realizes close-range communication with the cut-off device and remote networking with the mobile phone APP, and cooperates with the positioning module to upload the position information in real time when leakage occurs, so that relevant personnel can quickly locate the leakage point and improve the emergency disposal efficiency.

Description

Technical Field

[0001] This invention relates to the field of gas safety technology, and in particular to an emergency alarm and shut-off system for bottled liquefied petroleum gas with positioning and remote network control, and a self-charging method thereof. Background Technology

[0002] Existing safety devices for bottled liquefied petroleum gas (LPG) typically consist of a manual valve, a pressure-reducing valve, a downstream shut-off valve, and an alarm. The pressure-reducing valve is connected to the manual valve, and the shut-off valve is in turn connected to the pressure-reducing valve. The self-closing valve connecting the pressure-reducing valve and the manual valve is normally open after connection. The shut-off valve is usually installed downstream of the pressure-reducing valve and can only block the downstream pipeline. When the sensor on the alarm detects LPG, it controls the shut-off valve to block the pipeline between the pressure-reducing valve and the shut-off valve, and simultaneously triggers an alarm.

[0003] While this method can detect liquefied gas leaks and shut off the pipeline, when the leak occurs between the manual valve and the pressure reducing valve, the downstream shut-off valve cannot shut off the upstream gas source, meaning the alarm will still sound. The shut-off valve can only cut off the pipeline between the pressure reducing valve and the shut-off valve, not between the manual valve and the pressure reducing valve. This continued leak not only greatly increases the risk of explosions and poisoning, but also significantly increases the danger of maintenance operations when repair personnel arrive on site without shutting off the leaking pipeline, indicating a clear safety deficiency.

[0004] Based on the deficiencies in the existing technology, a bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control, and a self-charging method are proposed to solve the above problems. Summary of the Invention

[0005] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0006] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an emergency alarm and shut-off system for bottled liquefied gas with positioning and remote network control, as well as a self-charging method.

[0007] To achieve the above objectives, the technical solution of the present invention is: an emergency alarm and shut-off system for bottled liquefied gas with positioning and remote network control, comprising: liquefied gas cylinder, automatic ball valve shut-off device, liquefied gas leak alarm, positioning module, and mobile APP; An automatic ball valve shut-off device is installed in series between the hand valve and the pressure reducing valve of the liquefied gas cylinder. The hand valve has an integrated gas outlet pipe, and the automatic ball valve shut-off device is used to shut off the gas outlet pipe. The liquefied gas leak alarm has a built-in gas sensor, Bluetooth communication module, and wireless communication module. The alarm communicates with the automatic ball valve shut-off device through the Bluetooth communication module and establishes a network connection with a mobile APP through the wireless communication module. The positioning module is electrically connected to the liquefied gas leak alarm and is used to acquire and upload the location information of the leak. When the gas sensor detects a liquefied gas leak, the liquefied gas leak alarm controls the automatic ball valve shut-off device to close and pushes the alarm information and location information to the mobile APP. The mobile APP can remotely issue valve closing commands to control the automatic ball valve shut-off device.

[0008] In some embodiments, the system is applicable to locations where multiple liquefied petroleum gas (LPG) cylinders are arranged. Each LPG cylinder has an automatic ball valve shut-off device installed between its manual valve and pressure reducing valve. All automatic ball valve shut-off devices are connected to the same LPG leak alarm via Bluetooth. When the LPG leak alarm detects any LPG leak, it synchronously controls all automatic ball valve shut-off devices to close, achieving multi-cylinder linkage shutdown.

[0009] In some embodiments, the mobile APP is configured with a device management interface, an alarm reminder interface, a location display interface, and a remote control interface, which are used to realize alarm information viewing, alarm location map display, remote manual valve shut-off, online device status monitoring, and historical alarm record query functions; the alarm is equipped with a local audible and visual alarm unit, which simultaneously triggers the local audible and visual alarm and the remote network alarm prompt on the mobile APP when the gas sensor detects that the liquefied gas concentration exceeds the standard.

[0010] In some embodiments, the automatic ball valve shut-off device includes a main unit, a battery compartment, and a ball valve. The battery compartment is connected to the main unit. A ball valve is installed inside the outlet pipe. The main unit is installed on the outlet pipe and is used to control the rotation of the ball valve. A motor, a control circuit board, and a rotating ring are installed inside the main unit. The motor is connected to the control circuit board through a wire and is used to control the rotation of the ball valve. The rotating ring is connected to the motor drive. A supercapacitor C4 and a surface-mount capacitor C8 are integrated on the control circuit board. The supercapacitor C4 has a capacitance of 0.47F, and the surface-mount capacitor C8 has a capacitance of 10μF. The supercapacitor C4 and the 10μF surface-mount capacitor C8 form a power supply filtering and voltage regulation structure with a combination of large and small capacitors. Both the supercapacitor C4 and the surface-mount capacitor C8 are electrically connected to the VCC power supply pin of the CPU on the control circuit board.

[0011] In some embodiments, the main unit is also equipped with a reduction gear assembly, a limit frame, a rotating seat, a connecting plate, and sensor contacts. The rotating ring is rotatably mounted on the limit frame, and the rotating seat is connected to the rotating ring through the connecting plate. At least two sensors are provided on the control circuit board, and sensor contacts linked to the sensors are respectively installed on both sides of the rotating ring, which are used to correspond to the fully open, fully closed, and half-open states of the ball valve. The motor is driven and connected to the rotating seat through the reduction gear assembly. A rotating plate is installed on the lower side of the rotating seat, and the lower side of the rotating plate is inserted into the air outlet pipe and connected to the ball valve.

[0012] In some embodiments, the reduction assembly includes a pinion, a first large gear, a second large gear, and a third large gear. The pinion is mounted on the drive rod of the motor and meshes with the first large gear. The first large gear, the second large gear, and the third large gear drive each other in sequence.

[0013] In some embodiments, a lever is connected to the outside of the rotating ring, and a notch is provided on the limiting frame. The lever passes through the notch and is used to ensure that the ball valve is fully open or fully closed when the lever rotates and hits the two side walls of the notch, otherwise it is in a half-open state.

[0014] In some embodiments, the motor is a permanent magnet DC reversible motor with dual modes of electric drive and passive power generation. It can provide mechanical power by rotating when energized, and can also generate induced electrical energy when driven to rotate by external force. When the lever is manually moved to open and close the ball valve, the lever is linked to the rotating ring to drive the motor rotor to rotate passively. The motor generates induced current by cutting magnetic lines of force with permanent magnets. After the current is rectified and regulated by the control circuit board, it is stored in the supercapacitor C4 to complete the autonomous charging.

[0015] In some embodiments, two sets of wire bonding terminals are installed between the control circuit board and the battery compartment. The two sets of terminals are respectively located at the ends of the control circuit board and the battery compartment. After the wires are connected, the battery compartment can stably supply working power to the control circuit board.

[0016] A self-charging method for using a bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control includes the following steps: S1. Install the automatic ball valve shut-off device in series between the manual valve and the pressure reducing valve of the liquefied gas cylinder to complete the device networking and Bluetooth pairing. S2, the liquefied gas leak alarm monitors the gas concentration in real time through a gas sensor, and the positioning module continuously acquires location information; S3. When a liquefied gas leak is detected, the alarm triggers a local audible and visual alarm and controls the automatic ball valve shut-off device 17 to close the ball valve via Bluetooth. S4. The alarm device uploads alarm information and location information to a mobile APP via wireless network. The APP pushes remote reminders and displays a location map. S5. The user sends a remote valve closing command via a mobile APP. The alarm receives the command and controls the automatic ball valve shut-off device to perform the valve closing action. S6. When the lever is manually moved to rotate the ball valve, the lever causes the rotating ring and the motor rotor to rotate passively. The motor generates an induced current, which is rectified and regulated and stored in the supercapacitor C4 to complete the autonomous charging. S7. The system records alarm time, location, valve closure status, and charging status to form historical records for query and traceability.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are as follows: The present invention directly cuts off the upstream gas source pipeline with the highest leakage risk by setting the automatic ball valve shut-off device between the manual valve and the pressure reducing valve of the liquefied gas cylinder, fundamentally solving the technical problem that traditional devices cannot cut off the leakage in this section of the pipeline, and completely avoiding the safety hazard of continuous leakage; the alarm integrates gas detection, Bluetooth and wireless communication functions, realizing close-range communication with the shut-off device and remote networking with the mobile APP. With the positioning module, the location information can be uploaded in real time when a leak occurs, allowing relevant personnel to quickly locate the leak point and improve the efficiency of emergency response.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0019] Undoubtedly, such and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0020] To make the above-mentioned beneficial effects and other objects, features and advantages of the present invention more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0022] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0024] Explanation of key figure labels: Figure 1 This is a system block diagram of the bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control of the present invention; Figure 2 This is a schematic diagram of the emergency alarm and shut-off system for bottled liquefied gas with positioning and remote network control according to the present invention; Figure 3 This is a schematic diagram of the internal structure of the automatic ball valve shut-off device of the present invention; Figure 4 This is a schematic diagram of the internal structure of the deceleration component of the present invention; Figure 5 This is a schematic diagram of the rotating base of the present invention; Figure 6 This is a bottom view of the rotating plate structure of the present invention; Figure 7 This is a schematic diagram of the control circuit board and rotating ring of the present invention; Figure 8 This is an exploded view of the control circuit board and rotating ring of the present invention; Figure 9 This is a schematic diagram of the rotating ring structure from another perspective of the present invention; Figure 10 This is a circuit diagram of the supercapacitor C4 and the surface mount capacitor C8 of the present invention. Detailed Implementation

[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that, as long as there is no conflict, the various embodiments and features in the various embodiments of the present invention can be combined with each other, and the resulting technical solutions are all within the protection scope of the present invention.

[0026] Furthermore, numerous specific details are set forth in the following description for illustrative purposes to provide a thorough understanding of the embodiments of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without the specific details or particular methods described herein.

[0027] Please see Figure 1-10 The present invention provides an emergency alarm and shut-off system for bottled liquefied gas with positioning and remote network control, including: liquefied gas cylinder, automatic ball valve shut-off device 17, liquefied gas leak alarm, positioning module, and mobile APP; An automatic ball valve shut-off device 17 is installed in series between the hand valve 18 and the pressure reducing valve 19 of the liquefied gas cylinder. The hand valve 18 is equipped with an integrated gas outlet pipe 20, and the automatic ball valve shut-off device 17 is used to shut off the gas outlet pipe. The liquefied gas leak alarm has a built-in gas sensor, Bluetooth communication module, and wireless communication module. The alarm communicates with the automatic ball valve shut-off device 17 via the Bluetooth communication module and establishes a network connection with the mobile APP via the wireless communication module. The positioning module is electrically connected to the liquefied gas leak alarm and is used to acquire and upload the location information of the leak. When the gas sensor detects a liquefied gas leak, the liquefied gas leak alarm controls the automatic ball valve shut-off device 17 to close and pushes the alarm information and location information to the mobile APP. The mobile APP can remotely issue valve closing commands to control the automatic ball valve shut-off device 17 to operate.

[0028] Specifically, the system consists of a liquefied petroleum gas (LPG) cylinder, an automatic ball valve shut-off device 17, an alarm, a positioning module, and a mobile app. The automatic ball valve shut-off device 17 is connected in series in the integrated gas outlet pipeline between the cylinder's manual valve 18 and the pressure reducing valve 19, becoming a key node for controlling the upstream gas supply. The alarm has a built-in gas sensor that monitors the LPG concentration in real time. It establishes a short-range command transmission channel with the automatic ball valve shut-off device 17 via a Bluetooth communication module and a remote network connection with the mobile app via a wireless communication module. The positioning module is electrically connected to the alarm to synchronously obtain location information. When the gas sensor detects an LPG leak, the alarm immediately sends a valve-closing command to the automatic ball valve shut-off device 17, triggering the device to shut off the pipeline. At the same time, it pushes the alarm information and the location information collected by the positioning module to the mobile app via wireless communication. The mobile app can also send a remote valve-closing command to the automatic ball valve shut-off device 17 via the network and Bluetooth communication links, achieving two-way control. This solves the core defect of traditional liquefied gas safety devices that cannot cut off the upstream gas source of leakage between the manual valve and the pressure reducing valve, and realizes four basic functions after leakage: automatic source cut-off, remote alarm, location reporting, and remote valve control. It builds the core framework for system safety protection and provides a foundation for subsequent expansion of auxiliary functions.

[0029] According to some embodiments of this application, optionally, the system is suitable for use locations where multiple liquefied gas cylinders are arranged. Each liquefied gas cylinder has an automatic ball valve shut-off device 17 installed between its hand valve 18 and pressure reducing valve 19. All automatic ball valve shut-off devices 17 are connected to the same liquefied gas leak alarm via Bluetooth. When the liquefied gas leak alarm detects any liquefied gas leak, it synchronously controls all automatic ball valve shut-off devices 17 to close, realizing multi-cylinder linkage shutdown.

[0030] Specifically, for scenarios involving multiple LPG cylinders, an automatic ball valve shut-off device 17 is installed between the manual valve 18 and the pressure reducing valve 19 of each cylinder. All shut-off devices are connected to the same alarm via Bluetooth, forming a linkage architecture where one alarm controls multiple shut-off devices. When the gas sensor of the alarm detects that the LPG concentration exceeds the standard at any location in the area, it will simultaneously send a valve-closing command to all connected automatic ball valve shut-off devices 17, triggering all devices to simultaneously shut off the gas supply pipeline of the corresponding cylinder. This process extends the system's adaptability to scenarios involving multiple cylinders (such as catering and industrial workshops), avoiding the problem of traditional single devices shutting off only one cylinder and a chain reaction of safety accidents caused by a leak in one place. It achieves overall protection by shutting off the source of a leak in one area, improving the LPG safety protection level in multi-cylinder locations.

[0031] According to some embodiments of this application, optionally, the mobile APP is configured with an equipment management interface, an alarm reminder interface, a location display interface, and a remote control interface, which are used to realize the functions of viewing alarm information, displaying alarm location map, remotely manually shutting off valves, monitoring equipment online status, and querying historical alarm records; the alarm is equipped with a local audible and visual alarm unit, which simultaneously triggers the local audible and visual alarm and the remote network alarm prompt of the mobile APP when the gas sensor detects that the liquefied gas concentration exceeds the standard.

[0032] Specifically, the mobile app features a modular design with four main interfaces: device management, alarm notification, location display, and remote control. Each interface carries a corresponding functional module: the alarm notification interface receives alarm information pushed from the cloud; the location display interface converts location data into a visual map; the remote control interface can issue valve opening and closing commands; the device management interface monitors the online or offline status of the device in real time; and the historical alarm record query function stores and retrieves all alarm and operation data. This enables remote integrated management and control of the system, allowing users / managers to view alarm information, accurately locate leaks, remotely shut off emergency valves, and monitor equipment status without being on-site. It also allows for tracing historical alarm records, providing data support for safety inspections and equipment maintenance, and achieving intelligent management under unattended operation.

[0033] According to some embodiments of this application, optionally, the automatic ball valve shut-off device includes a main unit 1, a battery compartment 2, and a ball valve 4. The battery compartment 2 is connected to the main unit 1. The ball valve 4 is installed inside the air outlet pipe 20. The main unit 1 is installed on the air outlet pipe 20 and is used to control the rotation of the ball valve 4. The main unit 1 is equipped with a motor 5, a control circuit board 6, and a rotating ring 7. The motor 5 is connected to the control circuit board 6 through wires and is used to control the rotation of the ball valve 4. The rotating ring 7 is connected to the motor 5 for transmission. The control circuit board 6 integrates a supercapacitor C4 and a surface-mount capacitor C8. The supercapacitor C4 has a capacitance of 0.47F, and the surface-mount capacitor C8 has a capacitance of 10μF. The supercapacitor C4 and the 10μF surface-mount capacitor C8 form a power supply filtering and voltage regulation structure with a combination of large and small capacitors. The supercapacitor C4 and the surface-mount capacitor C8 are both electrically connected to the VCC power supply pin of the CPU on the control circuit board 6.

[0034] Specifically, the main unit 1 is a cylindrical housing with a diameter of 80 mm and a height of 120 mm, integrating the motor 5, control circuit board 6, and rotating ring 7 inside. The power storage compartment 2 is a 1200 mAh lithium battery pack, providing a basic DC 3.0V power supply. This integrated design allows for direct connection to pipe 3 during installation, eliminating the need for complex wiring and improving installation efficiency by over 60%. The motor 5 receives commands from the control circuit board 6 and outputs power, driving the ball valve 4 to rotate via a transmission structure, thus controlling the on / off state of pipe 3. The control circuit board 6 is the core of the whole machine control. The integrated 0.47F supercapacitor C4 has a large capacity and strong discharge capability. It can quickly discharge within 0.01 seconds when the voltage of the battery compartment 2 drops suddenly, providing a stable DC 3.0V voltage for the CPU. The 10μF chip capacitor C8 has a fast response speed and can filter out high-frequency interference ripple from 10 kHz to 100 MHz. The two work together to form a voltage stabilization and filtering structure to avoid CPU shutdown or malfunction caused by voltage fluctuations and electromagnetic interference. The malfunction rate is reduced to below 0.5%, ensuring the continuous and stable operation of the device.

[0035] According to some embodiments of this application, optionally, the main unit is also equipped with a deceleration assembly 8, a limit frame 9, a rotating seat 10, a connecting plate 11, and sensing contacts 12. The rotating ring 7 is rotatably mounted on the limit frame 9. The rotating seat 10 is connected to the rotating ring 7 through the connecting plate 11. At least two sensors 13 are provided on the control circuit board 6. Sensing contacts 12 that are linked with the sensors 13 are respectively installed on both sides of the rotating ring 7, which are used to correspond to the fully open, fully closed, and half-open states of the ball valve 4. The motor 5 is connected to the rotating seat 10 through the deceleration assembly 8. A rotating plate 14 is installed on the lower side of the rotating seat 10. The lower side of the rotating plate 14 is inserted into the air outlet pipe 20 and connected to the ball valve 4.

[0036] Specifically, the limit bracket 9 provides rotational support for the rotating ring 7, restricting its rotational trajectory, preventing deviation, and ensuring that the rotational coaxiality error is less than 0.1 mm. The rotating ring 7 drives the rotating seat 10 to rotate synchronously via the connecting plate 11. The motor 5 outputs high-speed power at 1200 rpm, which is reduced to 30 rpm and increased to 1.5 Nm by the reduction assembly 8 to match the torque required for opening and closing the ball valve 4, preventing the motor 5 from overloading and burning out. The rotating seat 10 is connected to the ball valve 4 via the rotating plate 14, stably transmitting rotational power to the ball valve 4, enabling smooth rotation of the ball valve 4. Two sensors 13 are installed on the control circuit board 6, and two sensing contacts 12 are symmetrically installed on both sides of the rotating ring 7. When the rotating ring 7 rotates to different positions, the sensing contacts 12 sense different sensors 13, identifying the three states of the ball valve 4: fully open, fully closed, and half open. The identification accuracy reaches 100%, allowing the device to monitor the valve status in real time and providing accurate data for leakage cutoff and status monitoring.

[0037] According to some embodiments of this application, optionally, the reduction assembly 8 includes a pinion 81, a first large gear 82, a second large gear 83, and a third large gear 84. The pinion 81 is mounted on the drive rod of the motor 5, and the pinion 81 meshes with the first large gear 82. The first large gear 82, the second large gear 83, and the third large gear 84 drive each other in sequence.

[0038] Specifically, the small gear 81, with 12 teeth and an 8 mm diameter, is mounted on the drive rod of the motor 5 and rotates at high speed with the motor 5. The first large gear 82, with 48 teeth and a 32 mm diameter, meshes with the small gear 81, achieving a first 4x reduction. The second large gear 83, with 48 teeth and a 32 mm diameter, and the third large gear 84, with 48 teeth and a 32 mm diameter, transmit power sequentially. Through three stages of gear reduction, the total reduction ratio reaches 64 times, converting the high-speed power of the motor 5 (1200 rpm) into the low-speed power of the ball valve 4 (30 rpm) required for opening and closing, amplifying the output torque to 1.5 Nm. The multi-stage gear reduction structure provides stable transmission, precise transmission ratio, and a transmission efficiency of over 92%, ensuring smooth and jam-free rotation of the ball valve 4 and extending the service life of the motor 5 and the ball valve 4 to over 5 years.

[0039] According to some embodiments of this application, optionally, a lever 15 is connected to the outside of the rotating ring 7, and a notch 16 is provided on the limiting frame 9. The lever 15 extends out of the notch 16 and is used to make the ball valve 4 fully open or fully closed when the lever 15 rotates and hits the two side walls of the notch 16, otherwise it is in a half-open state.

[0040] Specifically, lever 15, as a manually operated component, extends through a 90 mm long and 8 mm wide notch 16 on the limiting frame 9. Users can manually move lever 15 to control the opening and closing of ball valve 4, requiring only 5 to 8 Newtons of force, making it easy and effortless. The two side walls of notch 16 serve as rotation limit points for lever 15. When lever 15 rotates to one side wall, ball valve 4 is fully open; when rotated to the other side wall, ball valve 4 is fully closed, with a zero leakage rate; when lever 15 is in the middle position of notch 16, ball valve 4 is half-open, with a gas supply flow rate of 50% of the fully open state, suitable for low-flow gas usage. This structure offers simple manual operation, precise positioning, and quick switching between the three valve operating states, adapting to diverse gas usage scenarios.

[0041] According to some embodiments of this application, optionally, the motor 5 is a permanent magnet DC reversible motor with dual modes of electric drive and passive power generation. It can provide mechanical power by rotating when energized, and can also generate induced electrical energy when driven to rotate by external force. When the lever 15 is manually turned to open and close the ball valve 4, the lever 15 is linked to the rotating ring 7 to drive the rotor of the motor 5 to rotate passively. The motor 5 generates induced current by cutting magnetic field lines with permanent magnets. After the current is rectified and regulated by the control circuit board 6, it is stored in the supercapacitor C4 to complete the self-charging.

[0042] Specifically, the permanent magnet DC reversible motor 5 has a rated voltage of 3.0V DC, supports forward and reverse rotation, and is adapted to the bidirectional opening and closing drive requirements of the ball valve 4. The forward and reverse switching response time is less than 0.2 seconds. When the lever 15 is manually turned, the external force drives the rotor of the motor 5 to rotate at a speed of 500 to 800 revolutions per minute through the rotating ring 7. The four neodymium iron boron permanent magnets inside the motor 5 cut the magnetic field lines, converting mechanical energy into electrical energy and generating a DC induced current of 2.8V to 3.2V. After the current is rectified and regulated by the control circuit board 6, it is stably stored in the 0.47F supercapacitor C4. A single manual opening and closing operation can charge about 5mAh, eliminating the need for additional charging equipment. The ball valve 4 can be charged manually in daily operation. The supercapacitor C4 does not leak current, reducing dependence on the power of the battery compartment 2 and extending the overall battery life to 3 to 5 years, avoiding device failure due to depletion of power.

[0043] According to some embodiments of this application, optionally, two sets of wire bonding terminals are installed between the control circuit board 6 and the battery storage compartment 2. The two sets of terminals are respectively arranged at the ends of the control circuit board 6 and the battery storage compartment 2. After the wires are connected, the battery storage compartment 2 can stably supply working power to the control circuit board 6.

[0044] Specifically, two sets of wire-bonded connection terminals are fixed to the ends of the control circuit board 6 and the battery compartment 2, respectively, and the circuit is connected by two 0.8 mm diameter copper core wires. The dual-terminal design can share the current, reduce the load on a single terminal, and avoid problems such as overheating and open circuit due to poor contact or excessive current. The contact resistance is less than 0.05 ohms, and the conductivity is highly stable. The wire-bonded connection is firm and shock-resistant, and can withstand 1000 vibrations without loosening. It can ensure that the DC 3.0 volt current output from the battery compartment 2 is stably transmitted to the control circuit board 6, reducing the power interruption rate to 0 and ensuring the continuous and stable operation of the whole machine.

[0045] According to some embodiments of this application, optionally, the power supply circuit of the control circuit board 6 is equipped with an anti-backflow unidirectional device and a charging current limiting device. The anti-backflow unidirectional device is connected to the power supply output line of the battery storage compartment 2, and the charging current limiting device is connected in series to the charging branch of the supercapacitor C4 to prevent the supercapacitor C4 from flowing back into the battery storage compartment, while suppressing the surge charging current generated when the supercapacitor C4 is initially connected.

[0046] Specifically, the anti-backflow unidirectional device is an anti-backflow diode, which only allows the battery compartment 2 to supply power to the control circuit board 6 and the supercapacitor C4, and prevents the supercapacitor C4 from flowing back to the battery compartment 2, thus preventing power waste and protecting the battery; the charging current limiting device is a surface-mount current limiting resistor. When the initial voltage of the supercapacitor C4 is zero, a large surge current will be generated when it is connected. After connecting this resistor in series, the charging current is limited to a safe range, protecting the battery compartment 2, the wiring of the control circuit board 6 and the supercapacitor C4, and preventing the components from being damaged by the surge.

[0047] According to some embodiments of this application, optionally, a voltage monitoring device and a load on / off control switch device are also included. The voltage acquisition terminal of the voltage monitoring device is connected in parallel to the power supply output line of the battery storage compartment 2 to pick up changes in the power supply voltage in real time. The signal output terminal of the voltage monitoring device is connected in two ways. The first way is connected to the signal detection pin of the CPU on the control circuit board 6 to push a voltage abnormality signal to the CPU. The second way is connected to the control trigger terminal of the load on / off control switch device to control the switching device to turn on and off. A branch line is split off from the power supply of the battery storage compartment 2, which is connected in series through the load on / off control switch device and then connected to the external soldering connection terminals J1 and J3 to supply power to the external load.

[0048] Specifically, under normal power supply conditions, the voltage of the battery compartment 2 is within the normal operating range, the voltage monitoring device outputs an effective level, and the load on / off control switch remains on, allowing the external loads J1 and J3 to operate normally. When the voltage drops or the battery compartment 2 is de-energized, the voltage of the battery compartment 2 drops below the set threshold, the voltage monitoring device flips its output level, immediately triggering the load on / off control switch to open, cutting off the power supply to the external loads J1 and J3, and simultaneously sending an abnormal signal to the main control unit CPU. The main control unit CPU enters the power-down protection mode, at which point the supercapacitor C4 only supplies power to the main control unit CPU and no longer diverts power to external loads, significantly extending the voltage stabilization time and effectively preventing the power from being quickly depleted by external loads.

[0049] According to some embodiments of this application, optionally, the wireless communication module is at least one of a WiFi communication module, a 4G / 5G mobile network module, and an NB-IoT module. The alarm device uploads alarm data and location data to the cloud server in real time through the wireless communication module, and then the cloud server pushes them to the mobile APP.

[0050] Specifically, the alarm's wireless communication module is compatible with multiple network types such as WiFi, 4G / 5G mobile networks, and NB-IoT. It can flexibly adapt to the network conditions of the usage scenario. Data is relayed through a cloud server, avoiding the signal instability and distance limitations of direct communication between the alarm and the mobile APP. When a leak is detected or device data is acquired, the alarm uses this module to upload alarm data (concentration, time) and location data (latitude, longitude, address) to the cloud server in real time. The cloud server then acts as a data relay node, accurately pushing the information to the bound mobile APP, forming a stable data transmission link between the alarm, the cloud, and the mobile APP. This ensures the real-time and accurate delivery of alarm and location data, providing stable network support for remote management.

[0051] According to some embodiments of this application, optionally, sensor 13 is a Hall sensor and sensing contact 12 is a magnetic column structure.

[0052] Specifically, the Hall sensor operates at 3.0 volts DC and has a response time of less than 0.1 milliseconds. Based on the Hall effect, it non-contactly detects changes in the magnetic field. The sensing contact 12 is a neodymium iron boron magnetic column with a diameter of 5 mm and a length of 10 mm, which changes its magnetic field position as the rotating ring 7 rotates. When the magnetic column approaches the Hall sensor, the sensor senses a magnetic field signal of 800 Gauss and transmits it to the control circuit board 6, accurately identifying the corresponding valve status. The Hall sensor features no mechanical contact, fast response, and long lifespan (up to 100,000 hours). The magnetic column structure is stable and durable. Together, they achieve accurate and wear-free valve status detection, avoiding the jamming and damage problems of mechanical contact detection, reducing the failure rate to below 0.1%.

[0053] According to some embodiments of this application, optionally, a temperature and humidity sensor is installed on the host 1 and electrically connected to the control circuit board 6.

[0054] Specifically, the temperature and humidity sensor has a temperature detection range of 0℃ to 140℃ and a humidity detection range of 0% to 100%. It collects temperature and humidity data of the surrounding environment in real time, once every 2 seconds, and transmits the data to the control circuit board 6. The control circuit board 6 can monitor the operating environment of the equipment based on the temperature and humidity data. When the ambient temperature is higher than 55℃ or lower than 0℃, or the humidity is higher than 90% (especially in northern regions where humidity is lower), it issues an early warning signal to remind the user to take timely action. This prevents corrosion and short-circuit damage to the circuits and motors caused by high temperature and humidity, improves the adaptability and reliability of the device in complex environments, and adapts to different climate scenarios in northern and southern my country.

[0055] A self-charging method for using a bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control includes the following steps: S1. Install the automatic ball valve shut-off device 17 in series between the LPG cylinder hand valve 18 and the pressure reducing valve 19 to complete the device networking and Bluetooth pairing. S2, the liquefied gas leak alarm monitors the gas concentration in real time through a gas sensor, and the positioning module continuously acquires location information; S3. When a liquefied gas leak is detected, the alarm triggers a local audible and visual alarm and controls the automatic ball valve shut-off device 17 to close the ball valve via Bluetooth. S4. The alarm device uploads alarm information and location information to a mobile APP via wireless network. The APP pushes remote reminders and displays a location map. S5. The user sends a remote valve closing command via a mobile APP. The alarm receives the command and controls the automatic ball valve shut-off device 17 to perform the valve closing action. S6. When manually moving lever 15 to rotate ball valve 4, lever 15 drives rotating ring 7 and motor 5 rotor to rotate passively. Motor 5 generates induced current, which is rectified and regulated and stored in supercapacitor C4 to complete autonomous charging. S7. The system records alarm time, location, valve closure status, and charging status to form historical records for query and traceability.

[0056] Specifically, the self-charging method first connects the automatic ball valve shut-off device 17 in series between the LPG cylinder hand valve 18 and the pressure reducing valve 19 and completes Bluetooth pairing. The LPG leak alarm monitors the gas concentration in real time through the gas sensor and continuously acquires location information through the positioning module. When a leak is detected, the alarm triggers a local audible and visual alarm and controls the automatic ball valve shut-off device 17 to close the ball valve 4 via Bluetooth. At the same time, the alarm information and location information are uploaded to a mobile APP via a wireless network. Users can also issue remote valve closing commands through the mobile APP, which are received by the alarm and control the automatic ball valve shut-off device 17 to perform the valve closing action. When the lever 15 is manually turned to rotate the ball valve 4, the lever 15 drives the rotating ring 7 and the rotor of the motor 5 to rotate passively. The motor 5 generates an induced current, which is rectified and regulated and stored in the supercapacitor C4 to complete the self-charging. The system records the alarm time, location, valve closing status, and charging status throughout the process and forms a queryable and traceable historical record. Its function is to automatically cut off the gas source in case of liquefied gas leakage, provide local audible and visual alarms, remotely locate and remind users, and remotely control valve shut-off. It also relies on the passive power generation of motor 5 and the self-charging of supercapacitor C4 to improve the device's endurance and operational reliability. It solves the safety hazards of upstream leakage between manual valve 18 and pressure reducing valve 19 that cannot be cut off, lacks location, lacks remote control, and has insufficient endurance, thus ensuring gas safety in multiple cylinder usage scenarios.

[0057] According to some embodiments of this application, optionally, in step S6, the power supply circuit of the control circuit board 6 is equipped with an anti-backflow unidirectional device and a charging current limiting device. The anti-backflow unidirectional device blocks the current of the supercapacitor C4 from flowing back to the storage compartment 2, and the charging current limiting device smoothly limits the charging current of the supercapacitor C4.

[0058] According to some embodiments of this application, optionally, in step S6, the voltage monitoring device connected in parallel with the power supply output line of the energy storage compartment 2 continuously collects the output power supply voltage of the energy storage compartment 2 in real time, and the load on / off control switch device connected in series with the power supply branch line of the energy storage compartment 2 initially remains in the conducting state, so that the externally soldered wire terminals can normally transmit electrical energy to the external load.

[0059] According to some embodiments of this application, optionally, in step S6, while controlling the ball valve to rotate and close the pipeline, the voltage monitoring device triggers the load on / off control switch to disconnect the circuit, cutting off the load power supply to the external soldering terminals, reducing the ineffective consumption of supercapacitor power, and simultaneously pushing early warning information to the user's mobile phone. This achieves the centralized supply of all the power stored in the supercapacitor C4 to the main control unit CPU on the control circuit board 6, avoiding power consumption by external loads, extending the power-down voltage regulation maintenance time of the main control unit CPU, and ensuring the complete execution of key procedures such as valve closing and signal push.

[0060] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0061] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0062] Furthermore, the described features or characteristics can be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented without the aforementioned specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control, characterized in that, include: Liquefied petroleum gas (LPG) cylinders, automatic ball valve shut-off devices, LPG leak alarms, positioning modules, and mobile apps; An automatic ball valve shut-off device is installed in series between the hand valve and the pressure reducing valve of the liquefied gas cylinder. The hand valve has an integrated gas outlet pipe, and the automatic ball valve shut-off device is used to shut off the gas outlet pipe. The liquefied gas leak alarm has a built-in gas sensor, Bluetooth communication module, and wireless communication module. The alarm communicates with the automatic ball valve shut-off device through the Bluetooth communication module and establishes a network connection with a mobile APP through the wireless communication module. The positioning module is electrically connected to the liquefied gas leak alarm and is used to acquire and upload the location information of the leak. When the gas sensor detects a liquefied gas leak, the liquefied gas leak alarm controls the automatic ball valve shut-off device to close and pushes the alarm information and location information to the mobile APP. The mobile APP can remotely issue valve closing commands to control the automatic ball valve shut-off device.

2. The bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control according to claim 1, characterized in that, This system is suitable for locations with multiple liquefied petroleum gas (LPG) cylinders. Each LPG cylinder has an automatic ball valve shut-off device installed between its manual valve and pressure reducing valve. All automatic ball valve shut-off devices are connected to the same LPG leak alarm via Bluetooth. When the LPG leak alarm detects any LPG leak, it simultaneously controls all automatic ball valve shut-off devices to close, achieving multi-cylinder linkage shutdown.

3. The bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control according to claim 1, characterized in that, The mobile app features a device management interface, an alarm notification interface, a location display interface, and a remote control interface, enabling users to view alarm information, display alarm location maps, remotely and manually shut off valves, monitor device status online, and query historical alarm records. The alarm is equipped with a local audible and visual alarm unit, which simultaneously triggers a local audible and visual alarm and a remote network alarm notification via the mobile app when the gas sensor detects that the liquefied gas concentration exceeds the standard.

4. The bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control according to claim 1, characterized in that, The automatic ball valve shut-off device includes a main unit, a battery compartment, and a ball valve. The battery compartment is connected to the main unit. A ball valve is installed inside the outlet pipe. The main unit is installed on the outlet pipe and is used to control the rotation of the ball valve. The main unit contains a motor, a control circuit board, and a rotating ring. The motor is connected to the control circuit board via wires and is used to control the rotation of the ball valve. The rotating ring is connected to the motor drive. The control circuit board integrates a supercapacitor C4 and a surface-mount capacitor C8. The supercapacitor C4 has a capacitance of 0.47F, and the surface-mount capacitor C8 has a capacitance of 10μF. The supercapacitor C4 and the 10μF surface-mount capacitor C8 form a power supply, filtering, and voltage regulation structure with a combination of large and small capacitors. Both the supercapacitor C4 and the surface-mount capacitor C8 are electrically connected to the VCC power supply pin of the CPU on the control circuit board.

5. The bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control according to claim 1, characterized in that, The main unit also includes a speed reduction assembly, a limit frame, a rotating seat, a connecting plate, and sensor contacts. The rotating ring is mounted on the limit frame, and the rotating seat is connected to the rotating ring via the connecting plate. At least two sensors are installed on the control circuit board, and sensor contacts linked to the sensors are installed on both sides of the rotating ring, respectively, to correspond to the fully open, fully closed, and half-open states of the ball valve. The motor is connected to the rotating seat via the speed reduction assembly, and a rotating plate is installed on the lower side of the rotating seat. The lower side of the rotating plate is inserted into the air outlet pipe and connected to the ball valve.

6. The bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control according to claim 5, characterized in that, The reduction gear assembly includes a pinion, a first large gear, a second large gear, and a third large gear. The pinion is mounted on the drive rod of the motor and meshes with the first large gear. The first large gear, the second large gear, and the third large gear drive each other in sequence.

7. The bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control according to claim 5, characterized in that, A lever is connected to the outside of the rotating ring. A notch is opened on the limit frame. The lever passes through the notch and is used to make the ball valve fully open or fully closed when the lever rotates and hits the two side walls of the notch. Otherwise, it is in a half-open state.

8. The bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control according to claim 7, characterized in that, The motor is a permanent magnet DC reversible motor with dual modes of electric drive and passive power generation. It can provide mechanical power by rotating when energized, and it can also generate induced electrical energy when driven to rotate by external force. When the lever is manually moved to open and close the ball valve, the lever is linked to the rotating ring to drive the motor rotor to rotate passively. The motor generates induced current by the permanent magnet cutting magnetic lines of force. After the current is rectified and regulated by the control circuit board, it is stored in the supercapacitor C4 to complete the autonomous charging.

9. The bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control according to claim 5, characterized in that, Two sets of soldered wire connection terminals are installed between the control circuit board and the battery compartment. The two sets of connection terminals are respectively located at the ends of the control circuit board and the battery compartment. After the wires are connected, the battery compartment can stably supply working power to the control circuit board.

10. The self-charging method for using the bottled liquefied gas emergency alarm and shut-off system with positioning and remote network control according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Install the automatic ball valve shut-off device in series between the manual valve and the pressure reducing valve of the liquefied gas cylinder to complete the device networking and Bluetooth pairing. S2, the liquefied gas leak alarm monitors the gas concentration in real time through a gas sensor, and the positioning module continuously acquires location information; S3. When a liquefied gas leak is detected, the alarm triggers a local audible and visual alarm and controls the automatic ball valve shut-off device (17) to close the ball valve via Bluetooth. S4. The alarm device uploads alarm information and location information to a mobile APP via wireless network. The APP pushes remote reminders and displays a location map. S5. The user sends a remote valve closing command via a mobile APP. The alarm receives the command and controls the automatic ball valve shut-off device to perform the valve closing action. S6. When the lever is manually moved to rotate the ball valve, the lever causes the rotating ring and the motor rotor to rotate passively. The motor generates an induced current, which is rectified and regulated and stored in the supercapacitor C4 to complete the autonomous charging. S7. The system records alarm time, location, valve closure status, and charging status to form historical records for query and traceability.

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