A gas meter fault alarm device

Abstract

The application relates to the technical field of gas meters, in particular to a gas meter fault alarm device, a mechanical alarm structure comprises a hollow box fixed on the front of a first gas collecting box, left and right gas chambers and cavities are integrally communicated in the hollow box, a first magnet is slidably connected between the left and right gas chambers, a micro-force spring is fixed on the right gas chamber, one end of the micro-force spring is fixedly connected with the first magnet, overlapping gas ports are penetrated between the first gas collecting box and the left gas chamber, pressure triggering mechanism directly responds to the air pressure change caused by gas leakage, and sensitive elements such as electronic sensors are not needed. This fundamentally avoids the decrease of detection sensitivity and missed detection caused by the covering or adhesion of pollutants such as oil smoke, dust and water vapor due to the long-term exposure of electronic equipment to environments such as kitchens and basements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas meters, in particular to a gas meter fault alarm device. BACKGROUND

[0002] A gas meter is a measuring device used to measure the amount of gas delivered by a pipeline. It is crucial for protecting the rights and interests of gas users, promoting the management of the gas industry, and measuring and settling accounts.

[0003] After searching, it is found that a "gas meter gas leakage protection device" is disclosed in Chinese Patent No. 201921071643.X. The patent mainly monitors the gas meter through the gas monitor. When the gas meter leaks, the gas monitor detects and sends a signal to the signal receiver and the alarm. The alarm sends an alarm, and the signal receiver drives the motor through the PLC controller, so that the rotating plate can be sealed and attached to the sealing pad, thereby realizing the sealing of the valve body and blocking the flow of gas, thereby playing a protective role. The rotating rod is provided to facilitate the rotation of the rotating plate.

[0004] (1) The alarm device detects through electronic equipment, but the gas meter is usually installed in the kitchen, basement and other environmental areas. Electronic equipment such as sensors are exposed to air for a long time and are easily covered or attached by pollutants such as oil smoke, dust and water vapor. Pollutants can block the detection probe or sensitive elements of the sensor, reducing its sensitivity to gas concentration, smoke and other signals, and failing to accurately capture real leakage information. Even missing detection problems may occur, especially in kitchens and other scenarios, where cooking-generated oil smoke and steam can be mistaken by the sensor as gas leakage. The above misjudgment not only interferes with normal life or production order, but also may reduce user trust in the detection system due to frequent false alarms, and even ignore real leakage warnings. Therefore, a mechanical detection device is urgently needed, which does not rely on electronic sensitive elements and can directly respond to changes caused by leakage through mechanical structures (such as pressure triggering), effectively avoiding the precision decline problem caused by dust and oil smoke covering the electronic sensor.

[0005] (2) The alarm device relies on a single valve to close in sequence, which has significant safety hazards: as a mechanical component, the valve plate (equivalent to the rotating plate) is prone to damage, deformation, sealing surface failure and other problems due to medium erosion, corrosion, mechanical wear or accidental impact during long-term use. When the valve plate is damaged, even if the valve is in the closed state, gas may still leak through the damaged part or sealing gap of the valve plate, and effective secondary sealing cannot be achieved. Therefore, a technical solution is urgently needed to solve the existing single valve closure defects and achieve double safety closure to improve the reliability and safety of gas pipeline closure. SUMMARY

[0006] The gas meter fault alarm device aims to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a gas meter fault alarm device, comprising: a gas meter, a main pipe, a branch pipe, a first air inlet pipe, a second air inlet pipe, and an exhaust pipe, the main pipe and the branch pipe are integrally formed, the branch pipe is integrally formed with a main valve, the air inlet pipe and the exhaust pipe are installed at both ends of the top of the gas meter, and a sealing structure is arranged outside the connection between the branch pipe and the second air inlet pipe,

[0008] The sealing structure comprises a hollow plate integrally formed at one end of the first air inlet pipe, one end of the hollow plate is integrally formed with a first gas collecting box and the second air inlet pipe, the branch pipe is slidably connected with a second gas collecting box, one end of the first gas collecting box is provided with a slot, the inside of the slot is provided with a flexible air bag, one end of the second gas collecting box is fixed with a plug block matched with the slot, and a mechanical alarm structure is installed on the front of the sealing structure.

[0009] The mechanical alarm structure comprises a hollow box fixed on the front of the first gas collecting box, the inside of the hollow box is integrally connected with a left gas chamber, a right gas chamber, and a cavity, a first magnet is slidably connected between the left gas chamber and the right gas chamber, the right gas chamber is fixed with a micro-force spring, and one end of the micro-force spring is fixedly connected with the first magnet, and a gas port is penetrated between the first gas collecting box and the left gas chamber.

[0010] As a further scheme of the present application, the mechanical alarm structure further comprises a wedge-shaped iron block slidably connected at the top of the cavity, the wedge-shaped iron block is magnetically attracted by the first magnet, the bottom of the cavity is slidably connected with a first rod, a second rod, and a third rod through a through groove, and the outside of the first rod, the second rod, and the third rod is provided with a rectangular spring.

[0011] As a further scheme of the present application, the hollow box is provided with three sets of limiting components, the three sets of limiting components correspond to the first rod, the second rod, and the third rod respectively, the limiting component comprises a clamping groove provided on the outside of the first rod, the second rod, and the third rod, the bottom of the hollow box is provided with a recess, a reset spring is fixedly arranged in the inside of the recess and a clamping block is slidably connected, one end of the reset spring is fixedly connected with the clamping block, and the clamping block is abutted in the initial state so that the reset spring is in a compressed state.

[0012] As a further scheme of the present application, the mechanical alarm structure is linked with a visual reminder component, the visual reminder component comprises a hollow box bottom fixed placement frame, the bottom of the second rod is fixed with a needle, and the needle is located in the inside of the placement frame, the placement frame is provided with a backboard which can be opened, a water bag is placed in the inside of the placement frame, red powder is placed at the bottom of the placement frame, and the bottom of the placement frame is connected with a flexible drain pipe.

[0013] As a further scheme of the present application, the hollow box is provided with an opening on one side, and three groups of limiting components are located on the top of the opening, the mechanical alarm structure is linked with a sound reminder component, the sound reminder component comprises two copper plates installed in the opening, the two copper plates are respectively connected with a wire and a power line, a micro low-speed motor is installed at the top of the second gas collecting box, one end of the wire is connected with the micro low-speed motor, a rotating shaft is rotatably connected with the top of the branch pipe through a first supporting plate, one end of the rotating shaft is fixedly connected with the output end of the micro low-speed motor, a knocking block is fixedly connected with the outside of the rotating shaft, and a bell is installed at the top of the first supporting plate.

[0014] As a further scheme of the present application, the mechanical alarm structure is linked with a primary closing component and a secondary closing component, the primary closing component comprises a valve handle rotatably connected with the top of a total valve, the top of the valve handle is fixedly connected with a worm gear, and the outside of the total valve is rotatably connected with a worm through a second supporting plate, and the worm is engaged with the worm gear.

[0015] As a further scheme of the present application, the primary closing component further comprises a first notch provided at one end of the rotating shaft, one end of the worm is provided with a second notch, a second magnet is fixedly connected in the inside of the first notch, a square magnetic block is slidably connected in the inside of the second notch, one end of the square magnetic block is located in the inside of the first notch in an initial state, a press switch is installed on the second supporting plate, a pressing block is fixedly connected with the valve handle, and the press switch is connected with the second magnet through another hidden wire to form a closed loop.

[0016] As a further scheme of the present application, the secondary closing component comprises an air cavity provided in the hollow box, a cutter is fixedly connected with the bottom of the third rod, a piston is slidably connected with the inner wall of the air cavity, an extension spring is fixedly connected with the bottom of the air cavity, and the top end of the extension spring is fixedly connected with the bottom of the piston, a pull rope is fixedly connected with the top of the piston, the piston is pulled to the top of the air cavity in an initial state, one end of the pull rope is fixed, and the extension spring is in an elongated state.

[0017] As a further scheme of the present application, the hollow plate is internally fixed with a supporting frame, the supporting frame is provided with a limiting slot, a high-temperature-resistant and inflatable sealing air cushion is slidably arranged in the limiting slot, the bottom of the air cavity is connected with an air path pipe, one end of the air path pipe is connected with the sealing air cushion, and the supporting frame is fixed with a limiting strip.

[0018] As a further scheme of the present application, the limiting strip is provided with a ventilation groove, and the limiting strips are symmetrically arranged.

[0019] The gas meter fault alarm device provided by the present application has the beneficial effects that:

[0020] 1. The pure mechanical structure design is adopted, the pressure triggering mechanism directly responds to the gas pressure change caused by the gas leakage, and the sensitive elements such as electronic sensors are not needed. This fundamentally avoids the problems of detection sensitivity decline and missed detection caused by the covering or adhesion of pollutants such as oil smoke, dust and water vapor due to the long-term exposure of electronic equipment to the kitchen, basement and other environments, effectively eliminates the misjudgment caused by non-leakage factors such as cooking oil smoke and steam, ensures the accuracy and stability of the gas leakage detection, maintains the trust of the user to the detection system, and ensures that the real leakage warning can be effectively captured.

[0021] 2. When the low-level alarm occurs, the leakage gas makes the left air chamber pressure rise, drives the wedge-shaped iron block to press the first rod to extend, and the red appearance of the extended first rod can directly remind the leakage; when the moderate alarm occurs, the wedge-shaped iron block further presses the second rod to descend, the needle pierces the water bag, the red mixed liquid drops along the drain pipe, and the leakage intensifies through the ground trace warning; without opening the cabinet door where the gas meter is installed, the warning can be realized externally; when the leakage amount continuously increases to a serious degree, the third rod descends to connect the circuit, the micro low-speed motor drives the knocking block to hit the bell to make a sound, the high-level alarm is realized, the three-level alarms successively prompt through the vision, more obvious vision and sound, clearly distinguish the leakage severity, facilitate to take targeted measures, and when the high-level alarm occurs, the primary sealing assembly and the secondary sealing assembly are closed to block the gas flow.

[0022] 3. The double safety sealing structure combining the primary sealing assembly and the secondary sealing assembly breaks through the limitation of the single valve sealing. When the valve plate of the primary sealing assembly is damaged or the sealing fails due to long-term use, the sealing air cushion in the secondary sealing assembly can further seal the gas flow path through inflation, forming reliable double physical blockage, significantly improving the reliability and safety of the gas pipeline sealing, and effectively solving the safety hidden danger of the single valve sealing. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the gas meter and the mechanical alarm structure.

[0024] Figure 2 The mechanical alarm structure of the present application Figure 1 The schematic diagram of the sealing structure;

[0025] Figure 3 The mechanical alarm structure of the present application Figure 2 The schematic diagram of the local connection structure;

[0026] Figure 4 The schematic diagram of the hollow box bottom of the mechanical alarm structure of the present application

[0027] Figure 5 The enlarged view of M of the present application

[0028] Figure 6 The schematic diagram of the card slot and limiting assembly structure on the first column, the second column and the third column of the present application

[0029] Figure 7 The schematic diagram of the internal structure of the hollow box of the present application

[0030] Figure 8 The mechanical alarm structure of the present application Figure 7 The plan view;

[0031] Figure 9 The schematic diagram of the sound reminding assembly and the primary sealing assembly of the present application

[0032] Figure 10 The mechanical alarm structure of the present application Figure 9 The partial sectional view;

[0033] Figure 11 The schematic diagram of the structure at H of the present application

[0034] Figure 12 The enlarged view of Q of the present application

[0035] Figure 13 The schematic diagram of the secondary sealing assembly of the present application

[0036] In the figure: 11, gas meter; 12, main pipe; 13, branch pipe; 14, first stage air inlet pipe; 15, exhaust pipe; 16, main valve; 17, second stage air inlet pipe; 1, sealing structure; 101, hollow plate; 102, first gas collecting box; 103, second gas collecting box; 104, insertion slot; 105, insertion block; 2, mechanical alarm structure; 201, hollow box; 202, left air chamber; 203, right air chamber; 204, cavity; 205, first magnet; 206, micro-force spring; 207, air port; 208, wedge-shaped iron block; 209, first rod; 210, second rod; 211, third rod; 212, rectangular spring; 213, opening; 3, limiting assembly; 301, clamping groove; 302, recess; 303, reset spring; 304, clamping block; 4, visual reminding assembly; 401, placement frame; 402, needle; 403, water bag; 404, drain pipe; 5, sound reminding assembly; 501, copper plate; 502, wire; 503, power cord; 504, micro low-speed motor; 505, first support plate; 506, rotating shaft; 507, knocking block; 508, bell; 6, primary sealing assembly; 601, valve handle; 602, worm gear; 603, second support plate; 604, worm; 605, first notch; 606, second notch; 607, second magnet; 608, square magnetic block; 609, press switch; 610, pressing block; 7, secondary sealing assembly; 701, air cavity; 702, piston; 703, telescopic spring; 704, pull cord; 705, support frame; 706, limiting groove; 707, sealed air cushion; 708, air path pipe; 709, limiting strip; 710, cutter. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "arrangement" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances, and the embodiments thereof will be described below according to the overall structure of the present application.

[0039] A gas meter fault alarm device, comprising: a gas meter 11, a main pipe 12, a branch pipe 13, a first gas inlet pipe 14, a second gas inlet pipe 17, an exhaust pipe 15, the main pipe 12 and the branch pipe 13 are integrally formed, the branch pipe 13 is integrally formed with a total valve 16, the first gas inlet pipe 14 and the exhaust pipe 15 are installed at both ends of the top of the gas meter 11, a sealing structure 1 is arranged outside the connection between the branch pipe 13 and the second gas inlet pipe 17, the sealing structure 1 comprises a hollow plate 101 integrally formed at one end of the first gas inlet pipe 14, one end of the hollow plate 101 is integrally formed with a first gas collecting box 102 and the second gas inlet pipe 17, the branch pipe 13 is slidably connected with a second gas collecting box 103, one end of the first gas collecting box 102 is provided with a slot 104, the inside of the slot 104 is provided with a flexible air bag, one end of the second gas collecting box 103 is fixed with a plug 105 matched with the slot 104.

[0040] The working principle is as follows: the second gas inlet pipe 17 is butt jointed with the branch pipe 13, after butt jointing, the second gas collecting box 103 is slid to make the plug 105 inserted into the inside of the slot 104, then the plug 105 compresses the flexible air bag in the slot 104 to deform and fill the gap at the connection, which is beneficial to improve the sealing performance of the connection between the first gas collecting box 102 and the second gas collecting box 103.

[0041] It needs to be explained that the figure shows only the installation of mechanical alarm structure 2 in the position of branch pipe 13 and two-stage air inlet pipe 17. In actual use, mechanical alarm structure 2 can also be installed in the position of exhaust pipe 15. At this time, first gas collecting box 102 and second gas collecting box 103 wrap the connection between exhaust pipe 15 and gas stove hose and gas water heater hose.

[0042] Further, the front of the sealing structure 1 is provided with a mechanical alarm structure 2, which includes a hollow box 201 fixed on the front of the first gas collecting box 102. The hollow box 201 is integrally connected with a left gas chamber 202 and a right gas chamber 203, and a cavity 204. A first magnet 205 is slidably connected between the left gas chamber 202 and the right gas chamber 203. A micro-force spring 206 is fixed to the right gas chamber 203, and one end of the micro-force spring 206 is fixedly connected with the first magnet 205. A gas port 207 is penetratingly arranged between the first gas collecting box 102 and the left gas chamber 202. The mechanical alarm structure 2 further includes a wedge-shaped iron block 208 slidably connected to the top of the cavity 204. The wedge-shaped iron block 208 is magnetically attracted by the first magnet 205. The bottom of the cavity 204 is slidably connected with a first rod 209, a second rod 210 and a third rod 211 through a through slot. The first rod 209, the second rod 210 and the third rod 211 are externally provided with a rectangular spring 212.

[0043] The working principle is as follows: in the initial state, the gas pressures in the left gas chamber 202 and the right gas chamber 203 are the same. When gas leakage occurs at the connection, the leaked gas enters the first gas collecting box 102 and the second gas collecting box 103, and then reaches the inside of the left gas chamber 202 through the gas port 207. At this time, the gas pressure in the left gas chamber 202 increases on the basis of the initial equilibrium. Then the first magnet 205 moves to the right gas chamber 203 under the action of the pressure difference between left and right, and compresses the micro-force spring 206. The left gas chamber 202 is provided with a one-way exhaust valve. When the gas pressure in the left gas chamber 202 reaches the maximum critical point (the maximum critical point is that the third rod 211 descends, and the primary sealing assembly 6 and the secondary sealing assembly 7 are completed after sealing), the one-way exhaust valve is automatically opened to release pressure by gas pressure. The micro-force spring 206 resets with the first magnet 205 after pressure relief.

[0044] After magnet 205 moves, it moves wedge-shaped iron block 208 under magnetic attraction. Magnet 205 is a strong magnet, which has a good attraction effect on wedge-shaped iron block 208 and will not fall off. When wedge-shaped iron block 208 moves, it presses rod 209 to extend from the bottom of hollow box 201. At this time, rectangular spring 212 is compressed. The purpose of rectangular spring 212 is to facilitate the reset of rod 209, rod 210, and rod 211. Rod 209 is designed to be entirely red, so when the bottom of rod 209 extends, red will be exposed at the bottom of hollow box 201. When the cabinet door is opened to take out items, the red rod can be seen. Once the red rod is seen, it indicates that a gas leak has occurred, but in this case, it means that the gas leak is not serious. The above operation is a low-level gas leak alarm reminder.

[0045] It should be noted that the bottom of poles 209, 210, and 211 is equipped with traction ropes (not shown in the figure), and the bottom of the traction ropes is located at the bottom of the hollow box 201. After a gas leak occurs, workers need to repair it. After the repair is completed, the workers pull the three traction ropes to lower the three poles further. At this time, the highest point of the three poles is lower than the lowest point of the wedge-shaped iron block 208 to prevent obstruction during reset. Therefore, after the repair is completed and the gas pressure is restored to balance, magnet 205 and wedge-shaped iron block 208 can be reset by the micro-force spring 206.

[0046] Next, the hollow box 201 is provided with three sets of limiting components 3, which correspond to rod 1 209, rod 210 and rod 3 211 respectively. Each limiting component 3 includes a slot 301 on the outside of rod 1 209, rod 210 and rod 3 211. The bottom of the hollow box 201 is provided with a groove 302. A return spring 303 is fixed inside the groove 302 and a locking block 304 is slidably connected thereto. One end of the return spring 303 is fixedly connected to the locking block 304. In the initial state, the locking block 304 is pressed against the return spring 303, so that the return spring 303 is in a compressed state.

[0047] The working principle is as follows: When rod 209, rod 210, or rod 211 descends, the slot 301 in the hollow area of ​​the rod comes to the position of the locking block 304. Then, the compressed return spring 303 returns to its original position, taking the locking block 304 into the slot 301, thereby fixing the three rods and preventing them from resetting arbitrarily after descending, which would affect the accuracy of subsequent alarms. After the leak repair is completed, the worker pushes the locking block 304 with his finger, causing the locking block 304 to come out of the slot 301. Then, the three rods will be reset by the rectangular spring 212 to start the next round of leak alarm.

[0048] In addition, the mechanical alarm structure 2 is linked with a visual reminder component 4, the visual reminder component 4 comprises a hollow box 201 bottom fixed placement frame 401, the bottom of the second rod 210 is fixed with a needle 402, and the needle 402 is located in the inside of the placement frame 401, the placement frame 401 is provided with a backboard that can be opened, the inside of the placement frame 401 is placed with a water bag 403, the bottom of the placement frame 401 is placed with red powder, and the bottom of the placement frame 401 is connected with a flexible drain pipe 404.

[0049] The working principle is that when the leakage amount increases, the air pressure in the left chamber 202 increases, then pushes the first magnet 205 and the wedge-shaped iron block 208 to further move, at this time, the wedge-shaped iron block 208 presses the second rod 210 to make it descend, when the second rod 210 descends, the needle 402 descends, then the needle 402 bursts the water bag 403, then the internal water and the red powder at the bottom of the placement frame 401 combine into red water, then the red water flows out along the drain pipe 404 and drops to the ground, when the ground has red water, it means that it is in a moderate leakage state, at this time, the alarm is a moderate alarm reminder, the back of the placement frame 401 can be opened, which is convenient for replacing the new water bag 403.

[0050] In addition, one side of the hollow box 201 is provided with an opening 213, and three sets of limiting components 3 are located at the top of the opening 213, the mechanical alarm structure 2 is linked with a sound reminder component 5, the sound reminder component 5 comprises two copper plates 501 installed inside the opening 213, the two copper plates 501 are respectively connected with a wire 502 and a power line 503, a micro low-speed motor 504 is installed at the top of the second gas collecting box 103, one end of the wire 502 is connected with the micro low-speed motor 504, a rotating shaft 506 is rotatably connected with a knocking block 507 through a first support plate 505 at the top of the branch pipe 13, one end of the rotating shaft 506 is fixedly connected with the output end of the micro low-speed motor 504, the knocking block 507 is fixedly connected with the rotating shaft 506, and a bell 508 is installed at the top of the first support plate 505.

[0051] The working principle is that as the leakage amount continues to increase, the pressure difference further increases, then the first magnet 205 and the wedge-shaped iron block 208 continue to move to press the third rod 211, the third rod 211 is made of copper, when the third rod 211 descends, it contacts with the two copper plates 501 to make the circuit connected, then the micro low-speed motor 504 is electrified to rotate the rotating shaft 506 and the knocking block 507, and the knocking block 507 strikes the bell 508 to realize sound alarm prompt, this alarm is a high alarm after the leakage amount increases, which can also be said to be a serious alarm in a serious situation, and then according to the leakage degree of the gas, low, medium and high triple alarms are realized, so as to remind people the seriousness of the gas leakage, and then take different repair measures under different alarm levels.

[0052] Exemplary, the mechanical alarm structure 2 is linked with a primary closed assembly 6 and a secondary closed assembly 7, the primary closed assembly 6 includes a valve handle 601 rotating on top of a total valve 16, the top of the valve handle 601 is fixed with a worm wheel 602, the outside of the total valve 16 is rotationally connected with a worm 604 through a second support plate 603, and the worm 604 is engaged with the worm wheel 602, the primary closed assembly 6 further includes a first notch 605 arranged at one end of a rotating shaft 506, one end of the worm 604 is arranged with a second notch 606, the inside of the first notch 605 is fixed with a second magnet 607, the inside of the second notch 606 is slidingly connected with a square magnetic block 608, one end of the square magnetic block 608 is initially located inside the first notch 605, the second support plate 603 is installed with a press switch 609, the valve handle 601 is fixed with a pressing block 610, the press switch 609 is connected with the second magnet 607 through another hidden wire 502 to form a closed loop.

[0053] The working principle is that when the rotating shaft 506 rotates, the worm 604 rotates at a low speed for 90 degrees, and then the valve handle 601 rotates for 90 degrees to close the total valve 16, in the process of rotation, the pressing block 610 outside the valve handle 601 rotates to the front of the press switch 609 and presses the press switch 609 to open, then the second magnet 607 is energized to generate strong magnetism, the second magnet 607 (wrapped with an aluminum layer outside to improve the strength of the second magnet 607 and prevent it from breaking when rotating with the worm 604) and the square magnetic block 608 are arranged with the same polarity, then under the action of magnetic repulsion, the square magnetic block 608 retreats in the first notch 605 and completely leaves, at this time the worm 604 is disconnected with the rotating shaft 506, preventing the rotating shaft 506 from continuing to rotate forcibly with the worm 604 after the total valve 16 is closed (after the total valve 16 is closed, the valve handle 601 will not be rotated in the same direction), causing damage to the micro low-speed motor 504 and the total valve 16, through closing the total valve 16 to achieve the linkage closing of the total valve 16 under high alarm, especially in the kitchen or other scenarios without people, it is more suitable for this design.

[0054] In addition, the secondary closing assembly 7 comprises an air cavity 701 provided with a hollow box 201, the bottom of the third rod 211 is fixed with a cutter 710, the inner wall of the air cavity 701 is slidably connected with a piston 702, the bottom of the air cavity 701 is fixed with an elastic spring 703, the top end of the elastic spring 703 is fixedly connected with the bottom of the piston 702, the top of the piston 702 is fixed with a pull rope 704, the piston 702 in the initial state is pulled to the top of the air cavity 701 by the pull rope 704, one end of the pull rope 704 is fixed, and the elastic spring 703 is in the elongated state, the inside of the hollow plate 101 is fixed with a supporting frame 705, the supporting frame 705 is provided with a limiting groove 706, the limiting groove 706 is slidably provided with a high-temperature-resistant and inflatable sealing air cushion 707, the bottom of the air cavity 701 is connected with an air path pipe 708, one end of the air path pipe 708 is connected with the sealing air cushion 707, the supporting frame 705 is fixed with a limiting strip 709, the limiting strip 709 is provided with a ventilation groove, and the limiting strip 709 is symmetrically arranged, and the ventilation groove facilitates the flow of gas.

[0055] The working principle is that when the third rod 211 descends, the circuit is not only connected, but also the bottom cutter 710 cuts the pull rope 704, after the pull rope 704 is cut, the pulling force of the piston 702 and the elastic spring 703 disappears, at this time, the elastic spring 703 in the initial state is reset and descends with the piston 702, the piston 702 descends and extrudes the gas in the air cavity 701, then the gas comes to the inside of the sealing air cushion 707 (the sealing air cushion 707 is designed to be high-temperature-resistant, and the temperature is much higher than that of the gas) through the air path pipe 708, then the sealing air cushion 707 inflates and expands along the limiting groove 706 and the limiting strip 709, and through the limiting design, it can only move along the length direction to prevent it from expanding to both sides, then the expanded sealing air cushion 707 closes the supporting frame 705 to realize secondary closing, and the gas pressed by the reset piston 702 is just enough to inflate the sealing air cushion 707 to close the supporting frame 705, preventing the gas from being too large to harm the sealing air cushion 707.

[0056] It should be noted that the mechanical alarm structure 2 comprises the limiting assembly 3, the visual reminding assembly 4, the sound reminding assembly 5, the primary closing assembly 6 and the secondary closing assembly 7, forms a progressive gas leakage response alarm device, responds to abnormal leakage and alarms through mechanical linkage.

[0057] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A gas meter fault alarm device, comprising: A gas meter (11), a main pipe (12), branch pipes (13), a first-stage inlet pipe (14), a second-stage inlet pipe (17), and an exhaust pipe (15) are provided. The main pipe (12) and the branch pipe (13) are integrally formed. The branch pipe (13) is integrally formed with a main valve (16). The first-stage inlet pipe (14) and the exhaust pipe (15) are installed at both ends of the top of the gas meter (11). The gas meter is characterized in that a sealing structure (1) is provided on the outside of the connection between the branch pipe (13) and the second-stage inlet pipe (17). The sealing structure (1) includes a first-stage inlet pipe (14) A hollow plate (101) is integrally formed at one end. A first gas collection box (102) and a second air inlet pipe (17) are integrally formed at one end of the hollow plate (101). A second gas collection box (103) is slidably connected to the branch pipe (13). A slot (104) is provided at one end of the first gas collection box (102). A flexible airbag is provided inside the slot (104). A plug (105) that cooperates with the slot (104) is fixed at one end of the second gas collection box (103). A mechanical alarm structure (2) is installed on the front of the sealing structure (1). The mechanical alarm structure (2) includes a hollow box (201) fixed to the front of a first gas collection box (102). The hollow box (201) has an integrally connected left air chamber (202), a right air chamber (203), and a cavity (204). A first magnet (205) is slidably connected between the left air chamber (202) and the right air chamber (203). A micro-force spring (206) is fixed to the right air chamber (203), and one end of the micro-force spring (206) is fixedly connected to the first magnet (205). An overlapping air port (207) passes through the first gas collection box (102) and the left air chamber (202). The mechanical alarm structure (2) also includes a wedge-shaped iron block (208) slidably connected to the top of the cavity (204). The wedge-shaped iron block (208) is magnetically attracted by a first magnet (205). The bottom of the cavity (204) is slidably connected to a first rod (209), a second rod (210), and a third rod (211) through a set through groove. A rectangular spring (212) is set on the outside of the first rod (209), the second rod (210), and the third rod (211). The mechanical alarm structure (2) is linked to a visual reminder component (4). The visual reminder component (4) includes a placement frame (401) fixed to the bottom of a hollow box (201). A needle (402) is fixed to the bottom of the second rod (210), and the needle (402) is located inside the placement frame (401). The placement frame (401) is provided with a back panel that can be opened. A water bag (403) is placed inside the placement frame (401). Red powder is placed at the bottom of the placement frame (401). A flexible drain pipe (404) is connected to the bottom of the placement frame (401). The hollow box (201) has an opening (213) on one side, and three sets of limiting components (3) are located at the top of the opening (213). The mechanical alarm structure (2) is linked to a sound reminder component (5). The sound reminder component (5) includes two copper plates (501) installed inside the opening (213). The two copper plates (501) are respectively connected to wires (502) and power lines (503). A miniature low-speed motor (504) is installed on the top of the second gas collection box (103), and one end of the wire (502) is connected to the miniature low-speed motor (504). The top of the branch pipe (13) is rotatably connected to a rotating shaft (506) through a first support plate (505). One end of the rotating shaft (506) is fixedly connected to the output end of the miniature low-speed motor (504). A striking block (507) is fixed to the outside of the rotating shaft (506). A bell (508) is installed on the top of the first support plate (505). The mechanical alarm structure (2) is linked to a primary sealing component (6) and a secondary sealing component (7).

2. The gas meter fault alarm device according to claim 1, characterized in that, The hollow box (201) is provided with three sets of limiting components (3), the three sets of limiting components (3) correspond to the first rod (209), the second rod (210) and the third rod (211) respectively. The limiting components (3) include the slots (301) provided on the outside of the first rod (209), the second rod (210) and the third rod (211). The bottom of the hollow box (201) is provided with a groove (302). A reset spring (303) is fixed inside the groove (302) and a locking block (304) is slidably connected thereto. One end of the reset spring (303) is fixedly connected to the locking block (304).

3. A gas meter fault alarm device according to claim 1, characterized in that, The primary sealing assembly (6) includes a valve handle (601) that rotates on top of a main valve (16), a worm gear (602) that is fixed on top of the valve handle (601), and a worm (604) that is rotatably connected to the outside of the main valve (16) via a second support plate (603), and the worm (604) meshes with the worm gear (602).

4. A gas meter fault alarm device according to claim 3, characterized in that, The primary sealing assembly (6) also includes a first slot (605) at one end of the rotating shaft (506), a second slot (606) at one end of the worm gear (604), a second magnet (607) fixed inside the first slot (605), a square magnetic block (608) slidably connected inside the second slot (606), one end of the square magnetic block (608) initially located inside the first slot (605), a push switch (609) installed on the second support plate (603), a pressure block (610) fixed on the valve handle (601), and the push switch (609) connected to the second magnet (607) through another hidden wire (502) to form a closed loop.

5. A gas meter fault alarm device according to claim 1, characterized in that, The secondary sealing assembly (7) includes an air chamber (701) set in a hollow box (201), a cutter (710) is fixed at the bottom of the third rod (211), a piston (702) is slidably connected to the inner wall of the air chamber (701), a telescopic spring (703) is fixed at the bottom of the air chamber (701), and the top of the telescopic spring (703) is fixedly connected to the bottom of the piston (702). A pull rope (704) is fixed at the top of the piston (702). In the initial state, the piston (702) is pulled to the top of the air chamber (701) by the pull rope (704), and one end of the pull rope (704) is fixed, and the telescopic spring (703) is in a stretched state.

6. A gas meter fault alarm device according to claim 5, characterized in that, A support frame (705) is fixed inside the hollow plate (101). The support frame (705) is provided with a limiting groove (706). A high-temperature resistant and inflatable sealing gasket (707) is slidably arranged inside the limiting groove (706). An air passage pipe (708) is connected to the bottom of the air chamber (701), and one end of the air passage pipe (708) is connected to the sealing gasket (707). A limiting strip (709) is fixed to the support frame (705).

7. A gas meter fault alarm device according to claim 6, characterized in that, The limiting strip (709) is provided with a ventilation groove, and the limiting strip (709) is symmetrically arranged.

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