Gas meter with alarm function

Abstract

The utility model relates to the technical field of instruments and meters, in particular to a gas meter with an alarm function. The leakage-proof gas meter with the alarm function comprises an installation frame, a gas meter body, a displayer and the like. A displayer is arranged on the gas meter body, and a mounting frame is mounted on the side, back on to the displayer, of the gas meter body. The electromagnet is activated, the electromagnet generates magnetic attraction after being electrified, the electromagnet moves upwards along the first guide rod, so that the first contact switch is in contact with the second contact switch to form an access, current flows to the motor through the second electric wire, the motor is started to run, and the motor runs to drive the cam to rotate through the belt. The cam rotates to extrude the first wedge block to move downwards along the second guide rod and compress the first spring, the first wedge block moves to force the extrusion rod to move inwards under stress, the displacement of the extrusion rod triggers the emergency button, and therefore emergency closing of the gas valve is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of instruments and meters, in particular to a gas meter with an alarm function. Background Art

[0002] The working principle of a gas meter is based on fluid mechanics and mechanical principles. When gas flows through the gas meter, it pushes the internal diaphragm or turbine to rotate. The deformation of the diaphragm or the rotation speed of the turbine is proportional to the gas flow rate. Through a gear transmission mechanism, these movements are converted into pointer or digital displays, and the volume or mass of the gas can be calculated. Leakage is likely to cause harm to users, and it is necessary to promptly remind the staff not to use a fire source.

[0003] Existing gas meters with alarm functions are generally equipped with highly sensitive gas sensors that can detect slight changes in the gas concentration in the air and trigger an alarm immediately once it exceeds the safe range. However, existing gas meters with alarm functions only emit an alarm. When there is no one around, there is only an alarm sound, and it is difficult to close the valve in a timely manner. At this time, the gas will still leak continuously, thus causing a huge potential safety hazard. Therefore, there is an urgent need for a gas meter with an alarm function that can prevent leakage. Summary of the Utility Model

[0004] In order to overcome the drawback that existing gas meters with alarm functions only emit an alarm and it is difficult to close the valve in a timely manner, the utility model provides a gas meter with an alarm function that can prevent leakage.

[0005] The technical solution of the utility model: To solve the above technical problems, the utility model provides such a gas meter with an alarm function that can prevent leakage, which includes a mounting bracket, a gas meter body, a display, a connecting pipe, a sealing box, a gas concentration sensing device, an alarm, a first wire, a triggering component, and a closing component. A display is arranged on the gas meter body. A mounting bracket is installed on the side of the gas meter body facing away from the display. The top of the gas meter body is symmetrically communicated with the connecting pipe. A sealing box is installed on the top of the gas meter body for sealing the connection between the gas meter body and the connecting pipe. A gas concentration sensing device is installed on one side of the sealing box. An alarm is installed on the top of the sealing box. A triggering component is arranged between the sealing box and the gas concentration sensing device for triggering an emergency button to automatically cut off the gas supply. The alarm and the triggering component are electrically connected through a first wire. A closing component is installed between the sealing box and the gas meter body. When the gas concentration exceeds the safety threshold, the triggering component will activate the alarm and start the closing component.

[0006] Preferably, the triggering component further includes a mounting frame, a first guide rod, a first contact switch, an electromagnet, and a second contact switch. A mounting frame is installed on one side of the sealed box close to the gas concentration sensing device. A first guide rod is installed inside the mounting frame. An electromagnet is slidably installed on the first guide rod. A first contact switch is arranged on the electromagnet. A second contact switch is installed on the sealed box at a position corresponding to the first contact switch. After the first contact switch contacts the second contact, the first wire, the second contact switch, and the alarm are in a conductive state.

[0007] Preferably, the closing component further includes a motor, a second wire, a belt, a cam, a second guide rod, a pressing rod, a first spring, a first wedge block, a mounting plate, and an emergency button. A motor is installed on one side of the sealed box away from the display. The second contact switch and the motor are electrically connected through the second wire. A cam is rotatably installed on the gas meter body. A belt is arranged between the output shaft of the motor and the cam. A mounting plate is installed on the gas meter body. A second guide rod is installed on the mounting plate. A first wedge block is slidably installed on the second guide rod. A first spring is installed between the first wedge block and the second guide rod. A pressing rod is slidably installed inside the mounting plate. The pressing rod is movably connected to the first wedge block. An emergency button is arranged on the gas meter body. The emergency button is movably connected to the pressing rod.

[0008] Preferably, it further includes a box door and a rotating shaft. A rotating shaft is installed on the sealed box. A box door is rotatably installed on the rotating shaft.

[0009] Preferably, it further includes a second wedge block, a third guide rod, and a second spring. Third guide rods are symmetrically arranged inside the sealed box. A second wedge block is slidably installed on the third guide rods. A second spring is installed between the second wedge block and the inner wall of the sealed box.

[0010] Preferably, it further includes a warning light. Warning lights are symmetrically installed on one side of the gas meter body.

[0011] The beneficial effects of the present utility model are as follows:

[0012] 1. By activating the electromagnet in the present utility model, after the electromagnet is energized, it generates magnetic attraction. The electromagnet moves upward along the first guide rod, causing the first contact switch to contact the second contact switch, forming a conductive path. The current flows through the second wire to the motor, starting the motor to operate. The rotation of the motor drives the cam to rotate through the belt. The rotational movement of the cam squeezes the first wedge block to move downward along the second guide rod and compress the first spring. The movement of the first wedge block forces the pressing rod to move inward under force. The displacement of the pressing rod triggers the emergency button, thereby realizing the emergency closing of the gas valve.

[0013] 2. When the box door is closed, the second wedge block is pressed tightly into the gap between the box door and the sealed box under the elastic action of the second spring, significantly enhancing the sealing performance of the sealed box. This design effectively prevents the intrusion of external gas or the leakage of internal gas, creating a sealed space for the gas concentration sensing device, thereby improving the accuracy of detecting the gas concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0015] Figure 2 It is a three-dimensional structural sectional view of the mounting frame of the present utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the motor, the second wire and the belt of the present utility model.

[0017] Figure 4 It is a three-dimensional structural sectional view of the second wedge block and the box door of the present utility model.

[0018] Figure 5 For the present utility model Figure 4 Enlarged view of part A.

[0019] The reference signs in the drawings are: 1 - mounting bracket, 2 - gas meter body, 3 - display, 4 - connecting pipe, 5 - sealed box, 501 - box door, 502 - rotating shaft, 6 - gas concentration sensing device, 601 - mounting frame, 602 - first guide rod, 603 - first contact switch, 604 - electromagnet, 605 - second contact switch, 7 - alarm, 701 - first wire, 8 - motor, 801 - second wire, 802 - belt, 803 - cam, 804 - second guide rod, 805 - extrusion rod, 806 - first spring, 807 - first wedge block, 808 - mounting plate, 9 - second wedge block, 901 - third guide rod, 902 - second spring, 10 - warning light, 11 - emergency button. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described below with reference to the drawings and embodiments.

[0021] Embodiment 1: A gas meter with anti-leakage and alarm functions, as Figure 1 and Figure 2As shown in the figure, it includes a mounting bracket 1, a gas meter body 2, a display 3, a connecting pipe 4, a sealing box 5, a gas concentration sensing device 6, an alarm 7, a first electric wire 701, a triggering component and a closing component. The gas meter body 2 is responsible for measuring the amount of gas flowing through. A display 3 is provided on the gas meter body 2, and the display 3 is used to intuitively display the gas consumption, facilitating the user to read. A mounting bracket 1 is installed on the side of the gas meter body 2 facing away from the display 3, and the mounting bracket 1 is used to fix the gas meter body 2 to ensure that the gas meter body 2 is stably installed at the designated position. The top of the gas meter body 2 is symmetrically connected to a connecting pipe 4, and the connecting pipe 4 connects the gas supply pipeline and the gas meter body 2 to realize the inflow and outflow of gas. A sealing box 5 is installed on the top of the gas meter body 2 to seal the connection between the gas meter body 2 and the connecting pipe 4, providing a closed environment to protect the interface between the gas meter body 2 and the connecting pipe 4 from the external environment and reducing the leakage risk. A gas concentration sensing device 6 is installed on one side of the sealing box 5 to detect the gas concentration in the sealing box 5 and send a signal when the concentration exceeds the set safety threshold. An alarm 7 is installed on the top of the sealing box 5 to emit a sound warning when gas leaks, prompting the user that there is a gas leak. A triggering component is provided between the sealing box 5 and the gas concentration sensing device 6, and the alarm 7 and the triggering component are electrically connected through a first electric wire 701. The triggering component is used to trigger an emergency button 11 to automatically cut off the gas supply. A closing component is installed between the sealing box 5 and the gas meter body 2. When the gas concentration exceeds the safety threshold, the triggering component will activate the alarm 7 and start the closing component. The closing component can cut off the gas supply under the control of the triggering component to prevent further leakage.

[0022] As Figure 2As shown, the triggering component further includes a mounting frame 601, a first guide rod 602, a first contact switch 603, an electromagnet 604, and a second contact switch 605. A mounting frame 601 is installed on one side of the sealing box 5 close to the gas concentration sensing device 6. A first guide rod 602 is installed in the mounting frame 601 for fixing and supporting the first guide rod 602 to ensure the stability of the first guide rod 602. An electromagnet 604 is slidably installed on the first guide rod 602. The first guide rod 602 provides a moving track for the electromagnet 604 to ensure that the electromagnet 604 can smoothly move along the first guide rod 602 to a predetermined position when receiving an instruction. A first contact switch 603 is arranged on the electromagnet 604. A second contact switch 605 is installed on the sealing box 5 corresponding to the position of the first contact switch 603. When the gas concentration sensing device 6 detects that the concentration exceeds the standard, the electromagnet 604 will be activated. The magnetic force generated by the electromagnet 604 will cause it to move along the first guide rod 602 until the first contact switch 603 contacts the second contact switch 605. At this time, the first wire 701, the second contact switch 605, and the alarm 7 are in a conducting state, allowing current to flow through the first wire 701 to the alarm 7 to trigger the alarm.

[0023] As Figure 3 As shown, the closing component further includes a motor 8, a second wire 801, a belt 802, a cam 803, a second guide rod 804, a pressing rod 805, a first spring 806, a first wedge block 807, a mounting plate 808, and an emergency button 11. A motor 8 is installed on one side of the sealing box 5 facing away from the display 3. The motor 8 is the power source of the closing component and is controlled by the second contact switch 605 through the second wire 801. When the triggering component detects gas leakage, the motor 8 starts. The second wire 801 ensures the conduction of the circuit so that the motor 8 can start when needed. A cam 803 is rotatably installed on the gas meter body 2. A belt 802 is provided between the output shaft of the motor 8 and the cam 803. A second guide rod 804 is installed on the mounting plate 808. The second guide rod 804 provides guidance for the linear movement of the first wedge block 807 to ensure that the first wedge block 807 smoothly moves along the direction of the second guide rod 804. A first wedge block 807 is slidably installed on the second guide rod 804. A first spring 806 is installed between the first wedge block 807 and the second guide rod 804. The first spring 806 is used to maintain the initial position of the first wedge block 807 when the closing mechanism is not activated. A pressing rod 805 is slidably installed in the mounting plate 808. The pressing rod 805 is movably connected to the first wedge block 807. When the first wedge block 807 moves, the pressing rod 805 will be pushed. An emergency button 11 is arranged on the gas meter body 2. The emergency button 11 is movably connected to the pressing rod 805. When the pressing rod 805 triggers the emergency button 11, the emergency closing of the gas valve will be achieved.

[0024] When the gas concentration sensing device 6 detects that the gas concentration in the sealed box 5 exceeds the preset safety threshold, the gas concentration sensing device 6 sends a signal to the power control system of the electromagnet 604 through the internal circuit to activate the power supply of the electromagnet 604. After the electromagnet 604 is energized, it generates a magnetic attraction, and the electromagnet 604 moves upward along the first guide rod 602, causing the first contact switch 603 to contact the second contact switch 605, forming a circuit, enabling the current to flow through the first wire 701 to the alarm 7, triggering the alarm; at the same time, the current also flows through the second wire 801 to the motor 8, starting the operation of the motor 8. The operation of the motor 8 drives the rotation of the cam 803 through the belt 802. The rotational movement of the cam 803 squeezes the first wedge block 807 to move downward along the second guide rod 804 and compresses the first spring 806. The movement of the first wedge block 807 forces the extrusion rod 805 to move inward under force, and the displacement of the extrusion rod 805 triggers the emergency button 11. Through a series of mechanical linkages, the emergency button 11 of the gas valve is triggered, thereby realizing the emergency closing of the gas valve, stopping the operation of the entire device, cutting off the gas supply, preventing further leakage of gas, and thus reducing potential safety hazards.

[0025] Embodiment 2: On the basis of Embodiment 1, as Figure 4 and Figure 5 shown, it further includes a box door 501, a rotating shaft 502, a second wedge block 9, a third guide rod 901, a second spring 902, and a warning light 10. A rotating shaft 502 is installed on the sealed box 5. Through the rotating shaft 502, the box door 501 can be easily opened and closed, facilitating maintenance personnel to check or repair the interior when needed. The box door 501 is installed through the rotating shaft 502, effectively protecting the internal components from the external environment. The third guide rods 901 are symmetrically arranged inside the sealed box 5. The third guide rods 901 play a guiding role to ensure that the second wedge block 9 can move smoothly. The second wedge block 9 is slidably installed on the third guide rod 901. A second spring 902 is installed between the second wedge block 9 and the inner wall of the sealed box 5. When the box door 501 is closed, under the elastic action of the second spring 902, the second wedge block 9 is tightly pressed into the gap between the box door and the sealed box, significantly enhancing the sealing performance of the sealed box 5, effectively preventing the intrusion of external gas or the leakage of internal gas, creating a highly airtight space for the gas concentration sensing device 6. This highly sealed environment improves the accuracy of the gas concentration sensing device 6 in detecting the gas concentration. The warning lights 10 are symmetrically installed on one side of the gas meter body 2. When gas leaks, the warning lights 10 will immediately flash or change color, playing an obvious safety warning role, attracting the attention of the staff, reminding them that there may be danger in the area where the gas meter is located, and avoiding continued use or approaching the leaked gas without knowing it.

[0026] When the box door 501 is closed, the second wedge-shaped block 9 is tightly pressed into the gap between the box door 501 and the sealed box 5 under the elastic action of the second spring 902, significantly enhancing the sealing performance of the sealed box 5. This design effectively prevents the intrusion of external gas or the leakage of internal gas, creating a highly airtight space for the gas concentration sensing device 6. This highly sealed environment improves the accuracy of the gas concentration sensing device 6 in detecting the gas concentration. When maintenance is required inside the sealed box 5, the staff can easily open the sealed box 5 by rotating the box door 501 on the rotating shaft 502 for internal maintenance. The design of the warning light 10 is ingeniously linked with the gas concentration sensing device 6. Once an abnormal situation is detected, such as gas leakage, the warning light 10 will immediately flash or change color, playing an obvious safety warning role. This immediate visual feedback can quickly attract the attention of the staff, reminding them that there may be danger in the area where the gas meter is located, and avoiding continued use or approaching the leaked gas without knowledge, thus effectively preventing major safety accidents that may be caused by ignoring the leakage.

[0027] The above-described embodiments only represent the preferred implementation modes of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, improvements, and substitutions can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A gas meter with an alarm function, comprising a mounting frame (1), a gas meter body (2), a display (3) and a connecting pipe (4), wherein the gas meter body (2) is provided with the display (3), the mounting frame (1) is installed on the side of the gas meter body (2) facing away from the display (3), and the top of the gas meter body (2) is symmetrically connected with the connecting pipe (4), characterized in that: The invention also comprises a sealing box (5), a gas concentration sensing device (6), an alarm (7), a first electric wire (701), a trigger component and a closing component. The sealing box (5) is installed on the top of the gas meter body (2). The sealing box (5) is used to seal the connection between the gas meter body (2) and the connecting pipe (4). The gas concentration sensing device (6) is installed on one side of the sealing box (5). The alarm (7) is installed on the top of the sealing box (5). A trigger component is arranged between the sealing box (5) and the gas concentration sensing device (6) for triggering an emergency button (11) to automatically shut down the gas supply. The alarm (7) and the trigger component are electrically connected via the first electric wire (701). The closing component is installed between the sealing box (5) and the gas meter body (2). When the gas concentration exceeds the safety threshold, the trigger component activates the alarm (7) and starts the closing component.

2. A gas meter with an alarm function according to claim 1, characterized in that: The trigger assembly further comprises a mounting frame (601), a first guide rod (602), a first contact switch (603), an electromagnet (604) and a second contact switch (605); the mounting frame (601) is mounted on a side of the sealed box (5) close to the gas concentration sensing device (6); the first guide rod (602) is mounted in the mounting frame (601); the electromagnet (604) is slidably mounted on the first guide rod (602); the first contact switch (603) is arranged on the electromagnet (604); the second contact switch (605) is mounted on the sealed box (5) at a position corresponding to the first contact switch (603); after the first contact switch (603) contacts the second contact switch, the first electric wire (701), the second contact switch (605) and the alarm (7) are in a communication state.

3. A gas meter with an alarm function according to claim 2, characterized in that: The closing assembly further comprises a motor (8), a second electric wire (801), a belt (802), a cam (803), a second guide rod (804), an extrusion rod (805), a first spring (806), a first wedge block (807), a mounting plate (808) and an emergency button (11); a motor (8) is mounted on the side of the sealing box (5) away from the display (3); the second contact switch (605) is electrically connected to the motor (8) via the second electric wire (801); a cam (803) is rotatably mounted on the gas meter body (2); a belt (803) is provided between the output shaft of the motor (8) and the cam (803); The gas meter body (2) is provided with a mounting plate (808), a second guide rod (804) is mounted on the mounting plate (808), a first wedge block (807) is slidably mounted on the second guide rod (804), a first spring (806) is mounted between the first wedge block (807) and the second guide rod (804), an extrusion rod (805) is slidably mounted in the mounting plate (808), the extrusion rod (805) is movably connected to the first wedge block (807), and an emergency button (11) is arranged on the gas meter body (2), the emergency button (11) is movably connected to the extrusion rod (805).

4. A gas meter with an alarm function according to claim 3, characterized in that: It also includes a box door (501) and a rotating shaft (502). The rotating shaft (502) is installed on the sealed box (5), and the box door (501) is rotatably installed on the rotating shaft (502).

5. A gas meter with an alarm function according to claim 4, characterized in that: The invention also comprises a second wedge block (9), a third guide rod (901) and a second spring (902); the third guide rod (901) is symmetrically arranged in the sealing box (5); the second wedge block (9) is slidably mounted on the third guide rod (901); and the second spring (902) is mounted between the second wedge block (9) and the inner wall of the sealing box (5).

6. A gas meter with an alarm function according to claim 5, characterized in that: It also includes a warning light (10), and the warning light (10) is symmetrically mounted on one side of the gas meter body (2).

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