Gas leakage alarm device of ultrasonic gas meter

Abstract

The utility model belongs to the technical field of gas safety detection, and particularly relates to a gas leakage alarm device of a gas ultrasonic gas meter, which comprises a gas leakage alarm device shell, a gas leakage detection component is arranged in the gas leakage alarm device shell, and a sensor protection component is mounted on the side of the gas leakage detection component. An alarm lamp is installed on the top of the air leakage alarm device shell, the side of the alarm lamp is electrically connected with a buzzer, and the bottom of the air leakage alarm device shell is in threaded connection with an air leakage alarm fixing assembly. The gas leakage detection assembly comprises a gas sensor, a telescopic shell, a telescopic inner core, a main power supply, a rotating piece and a control power supply, the outer wall of the gas sensor is electrically connected with the telescopic shell, and the telescopic inner core is slidably connected into the telescopic shell; according to the utility model, the gas leakage alarm device can be conveniently fixed at a proper height, the dismounting is more convenient, meanwhile, the gas sensitive sensor is protected, and dust accumulation and influence on sensitivity are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of gas safety detection, in particular to a gas leakage alarm device for a gas ultrasonic gas meter. Background Art

[0002] With the continuous improvement of living standards, people pay more and more attention to environmental protection, and conventional energy with serious pollution is gradually being abandoned by people. With the construction and popularization of gas pipelines, gas meters have sprung up like mushrooms after a rain, from mechanical to electronic, from model to ultrasonic. Due to the relatively large harm of gas leakage, it will first cause gas poisoning. In addition, if the gas leaks, it will also cause explosions, combustion and other phenomena.

[0003] In Chinese patent CN218957240U, the utility model relates to the technical field of alarm devices, and discloses a gas leakage alarm device, including a mounting plate, a fixing structure connected to the mounting plate, a slide groove reserved at the back of the mounting plate, and a mounting mechanism connected inside the slide groove. The utility model enables people to use the gas concentration detector to achieve the purpose of gas leakage alarm through the mutual cooperation of parts such as the mounting plate, the adjustment component and the fixing structure, and under the action of the adjustment component and the fixing structure, the device can quickly install and fix gas concentration detectors of different models, thereby solving the problem of the existing device that firstly, the fixing bar needs to slide multiple times during the adjustment process, and the bolts need to be repeatedly used for fixing, which increases the time for installing the equipment. Secondly, when fixing the equipment, it takes some time to adjust the position of the mounting block to adapt it to different gas alarm devices. Therefore, the device needs to spend a lot of time during the entire use process.

[0004] The existing gas meter's gas leakage alarm device has problems because coal gas, natural gas, etc. are lighter than air and float at high places. The gas sensor should be installed on the upper part of the gas source, within a radius of 1.5 meters from the gas source, and in a well-ventilated place. Therefore, the gas leakage alarm device should be fixed at a slightly higher position. The existing device does not solve the problem of high-altitude fixing. At the same time, the existing device does not protect the sensor from dust. Too much dust accumulates on the sensor, which may cause the sensor sensitivity to deteriorate and lead to problems that cannot be detected.

[0005] Therefore, in order to solve the above problems, a gas leakage alarm device for a gas ultrasonic gas meter is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, the present utility model solves the problem that since coal gas, natural gas, etc. are lighter than air and float at high places, the gas sensitive sensor should be installed on the upper part of the gas source, within a radius of 1.5 meters from the gas source, in a well-ventilated place, so the gas leakage alarm device should be fixed at a slightly higher position. The existing devices do not solve the problem of high-altitude fixing. At the same time, the existing devices do not protect the sensors from dust. Too much dust accumulates on the sensors, which may cause the sensor sensitivity to deteriorate and lead to the problem that the sensors cannot be detected.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the gas leakage alarm device of a gas ultrasonic gas meter described in the utility model comprises a gas leakage alarm device shell, a gas leakage detection component is arranged inside the gas leakage alarm device shell, and a sensor protection component is installed on the side of the gas leakage detection component, an alarm light is installed on the top of the gas leakage alarm device shell, and a buzzer is electrically connected to the side of the alarm light, and a gas leakage alarm fixing component is threadedly connected to the bottom of the gas leakage alarm device shell; the gas leakage detection component comprises a gas sensitive sensor, a telescopic shell, a telescopic inner core, a main power supply, a rotating piece, and a control power supply, the outer wall of the gas sensitive sensor is electrically connected to the telescopic shell, and the inside of the telescopic shell is slidably connected to the telescopic inner core, the side of the telescopic inner core is provided with a main power supply, and the bottom of the main power supply is rotatably connected to a rotating piece, and the side of the rotating piece is provided with a control power supply.

[0008] Preferably, the telescopic inner core forms a sliding structure through the telescopic outer shell and the rotating piece, and the rotating piece forms a rotating structure through the main power supply and the control power supply.

[0009] Preferably, the sensor protection assembly includes a protective shell, a sliding groove, a protective mesh cover, a rotating shaft, and an iron block. The protective shell is provided with a sliding groove inside, and the interior of the sliding groove is slidably connected to the protective mesh cover. The side of the protective shell is rotatably connected to the rotating shaft, and the outer wall of the rotating shaft is fixedly connected to the iron block.

[0010] Preferably, the protective mesh cover forms a sliding structure with the protective shell through a sliding groove, and the protective mesh cover forms a detachable structure with the protective shell through an iron block, and the iron block forms a rotating structure with the protective mesh cover through a rotating shaft.

[0011] Preferably, the air leakage alarm fixing assembly includes a connecting frame, a supporting frame, a fixing block, a threaded hole, and a threaded rod. The side of the connecting frame is fixedly connected to the supporting frame, and the top of the supporting frame is fixedly connected to the fixing block. The side of the fixing block is provided with a threaded hole, and the internal thread of the threaded hole is connected to the threaded rod.

[0012] Preferably, the housing of the air leakage alarm device forms a snap-fit ​​structure with the support frame through a fixing block, and the housing of the air leakage alarm device forms a threaded detachable structure with the support frame through a threaded hole, a threaded rod, and a fixing block.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model is provided with a gas leakage detection component, and uses a gas sensor to detect whether the gas concentration in the air exceeds the standard. If the gas concentration in the air exceeds the standard, the alarm light and buzzer on the top of the gas leakage alarm device housing will sound an alarm, thereby achieving the effect of gas leakage alarm;

[0015] 2. The utility model sets a sensor protection component. The protective housing and the protective mesh cover can protect the gas sensor to prevent dust and mosquitoes from entering, which may reduce the sensitivity of the sensor and damage the sensor. At the same time, the protective mesh cover can slide inside the protective housing, which can facilitate regular inspection of the gas sensor. At the same time, the outer wall of the protective mesh cover is covered with holes, which does not hinder the gas sensor from detecting the concentration of gas in the air.

[0016] 3. The utility model arranges a gas leakage alarm fixing component, the support frame is fixed to the wall through the connecting frame, and the gas leakage alarm device shell is fixed to the support frame through the fixing block, the threaded hole and the threaded rod. When the gas leakage alarm device shell is disassembled and repaired, there is no need to disassemble the connecting frame and the support frame, thereby reducing the workload of personnel. At the same time, the support frame and the connecting frame are triangular, which provides stability to the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model as a whole from the side;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the air leakage detection component of the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the sensor protection assembly of the utility model;

[0021] Figure 4 It is a three-dimensional structural diagram of the air leakage alarm fixing assembly of the utility model;

[0022] In the figure: 1. Leakage alarm device housing; 2. Leakage detection component; 201. Gas sensor; 202. Telescopic housing; 203. Telescopic inner core; 204. Main power supply; 205. Rotating piece; 206. Control power supply; 3. Sensor protection component; 301. Protection housing; 302. Sliding groove; 303. Protection mesh cover; 304. Rotating shaft; 305. Iron block; 4. Alarm light; 5. Buzzer; 6. Leakage alarm fixing component; 601. Connecting frame; 602. Support frame; 603. Fixing block; 604. Threaded hole; 605. Threaded rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figure 1 and Figure 2 As shown, a gas leakage alarm device for a gas ultrasonic gas meter comprises a gas leakage alarm device housing 1, a gas leakage detection component 2 is arranged inside the gas leakage alarm device housing 1, and a sensor protection component 3 is installed on the side of the gas leakage detection component 2, an alarm light 4 is installed on the top of the gas leakage alarm device housing 1, and a buzzer 5 is electrically connected to the side of the alarm light 4, and a gas leakage alarm fixing component 6 is threadedly connected to the bottom of the gas leakage alarm device housing 1; the gas leakage detection component 2 comprises a gas sensitive sensor 201, a telescopic housing 202, and a telescopic inner core 20 3. The main power supply 204, the rotating piece 205, and the control power supply 206 can detect whether the gas concentration in the air exceeds the standard. The telescopic inner core 203 forms a sliding structure with the rotating piece 205 through the telescopic outer shell 202, and the rotating piece 205 forms a rotating structure through the main power supply 204 and the control power supply 206; the gas sensor 201 is used to detect whether the gas concentration in the air exceeds the standard. If the gas concentration in the air exceeds the standard, the alarm light 4 and the buzzer 5 on the top of the leakage alarm device shell 1 will sound an alarm, thereby achieving the effect of leakage alarm.

[0026] See also Figure 1 and Figure 3As shown, a gas leakage alarm device for a gas ultrasonic gas meter, a sensor protection component 3, includes a protective shell 301, a sliding groove 302, a protective mesh cover 303, a rotating shaft 304, and an iron block 305, to prevent dust accumulation from affecting the sensitivity of the sensor. The protective mesh cover 303 forms a sliding structure with the protective shell 301 through the sliding groove 302, and the protective mesh cover 303 forms a detachable structure with the protective shell 301 through the iron block 305, and the iron block 305 forms a rotating structure with the protective mesh cover 303 through the rotating shaft 304; because the protective shell 301 and the protective mesh cover 303 can protect the gas sensor 201, prevent dust and mosquitoes from entering, resulting in a decrease in sensor sensitivity and damage to the sensor, at the same time, the protective mesh cover 303 can slide inside the protective shell 301, which can facilitate regular inspection of the gas sensor 201, and at the same time, the outer wall of the protective mesh cover 303 is covered with holes, which does not hinder the gas sensor 201 from detecting the concentration of gas in the air.

[0027] See also Figure 1 and Figure 4 As shown, a gas leakage alarm device of a gas ultrasonic gas meter, a gas leakage alarm fixing component 6, includes a connecting frame 601, a support frame 602, a fixing block 603, a threaded hole 604, and a threaded rod 605, which is more firmly fixed, easy to install and easy to use. The housing 1 of the gas leakage alarm device forms a snap-fit ​​structure with the support frame 602 through the fixing block 603, and the housing 1 of the gas leakage alarm device forms a threaded detachable structure with the support frame 602 through the threaded hole 604, the threaded rod 605, the fixing block 603; the support frame 602 is fixed to the wall through the connecting frame 601, and the housing 1 of the gas leakage alarm device is fixed to the support frame 602 through the fixing block 603, the threaded hole 604, and the threaded rod 605. When the housing 1 of the gas leakage alarm device is disassembled and repaired, there is no need to disassemble the connecting frame 601 and the support frame 602, thereby reducing the workload of personnel. At the same time, the support frame 602 and the connecting frame 601 are triangular, which provides stability to the device.

[0028] Working principle: First, fix the connecting frame 601 and the supporting frame 602 at a suitable height. At this time, the housing 1 of the air leakage alarm device is inserted into the fixing block 603 on the top of the supporting frame 602 through the hole at the bottom. At this time, the threaded rod 605 is inserted into the threaded hole 604 and the fixing block 603 in sequence to fix the housing 1 of the air leakage alarm device to the supporting frame 602. The supporting frame 602 and the connecting frame 601 form a "triangle" for greater stability. At the same time, rotate the rotating shaft 304 to rotate the iron block 305 upward, and then slide the protective mesh cover 303 into the protective housing 301 through the sliding groove 302. At this time, release the iron block 305. The iron block will rotate to the bottom of the rotating shaft 304 due to its own weight, thereby fixing the protective mesh cover 303 on the protective housing 301 to prevent it from falling off, thereby affecting the protective effect.

[0029] Next, the gas sensor 201 is a sensor used to detect gas concentration and composition. It plays an extremely important role in environmental protection and safety supervision. When the gas sensor 201 detects that the gas concentration in the air exceeds the standard, it will start to transmit in the form of an electrical signal, so that the telescopic inner core 203 extends from the telescopic outer shell 202, and rotates around the main power supply 204 against the rotating piece 205, and finally touches the control power supply 206. When the rotating piece 205 touches the control power supply 206, the circuit is connected, and the alarm light 4 and The buzzer 5 will sound a warning to alert the surrounding personnel, so that they can take countermeasures such as opening windows for ventilation and inspection. Finally, if it is necessary to conduct regular inspections on the gas sensor 201, measure one: rotate the iron block 305 upward through the rotating shaft 304, and slide the protective mesh cover 303 out of the protective shell 301 for a simple inspection; measure two: rotate the threaded rod 605 to disengage the gas leakage alarm device shell 1 from the support frame 602, and slide the gas leakage alarm device shell 1 upward from the fixed block 603 for a detailed inspection of the device.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A gas leakage alarm device for a gas ultrasonic gas meter, characterized in that: The invention comprises a gas leakage alarm device housing (1), wherein a gas leakage detection component (2) is arranged inside the gas leakage alarm device housing (1), and a sensor protection component (3) is installed on the side of the gas leakage detection component (2), an alarm light (4) is installed on the top of the gas leakage alarm device housing (1), and a buzzer (5) is electrically connected to the side of the alarm light (4), and a gas leakage alarm fixing component (6) is threadedly connected to the bottom of the gas leakage alarm device housing (1); The gas leakage detection component (2) comprises a gas sensor (201), a telescopic outer shell (202), a telescopic inner core (203), a main power supply (204), a rotating piece (205), and a control power supply (206); the outer wall of the gas sensor (201) is electrically connected to the telescopic outer shell (202), and the interior of the telescopic outer shell (202) is slidably connected to the telescopic inner core (203); the main power supply (204) is arranged on the side of the telescopic inner core (203), and the bottom of the main power supply (204) is rotatably connected to the rotating piece (205), and the control power supply (206) is arranged on the side of the rotating piece (205).

2. The gas leakage alarm device of a gas ultrasonic gas meter according to claim 1, characterized in that: The telescopic inner core (203) forms a sliding structure through the telescopic outer shell (202) and the rotating piece (205), and the rotating piece (205) forms a rotating structure through the main power supply (204) and the control power supply (206).

3. The gas leakage alarm device of a gas ultrasonic gas meter according to claim 1, characterized in that: The sensor protection assembly (3) comprises a protection shell (301), a sliding groove (302), a protection mesh cover (303), a rotating shaft (304), and an iron block (305). The protection shell (301) is provided with a sliding groove (302) inside, and the protection mesh cover (303) is slidably connected inside the sliding groove (302). The side of the protection shell (301) is rotatably connected to the rotating shaft (304), and the outer wall of the rotating shaft (304) is fixedly connected to the iron block (305).

4. The gas leakage alarm device of a gas ultrasonic gas meter according to claim 3, characterized in that: The protective mesh cover (303) forms a sliding structure with the protective shell (301) through the sliding groove (302), and the protective mesh cover (303) forms a detachable structure with the protective shell (301) through the iron block (305), and the iron block (305) forms a rotating structure with the protective mesh cover (303) through the rotating shaft (304).

5. The gas leakage alarm device of a gas ultrasonic gas meter according to claim 1, characterized in that: The air leakage alarm fixing assembly (6) comprises a connecting frame (601), a supporting frame (602), a fixing block (603), a threaded hole (604), and a threaded rod (605); the side of the connecting frame (601) is fixedly connected to the supporting frame (602), the top of the supporting frame (602) is fixedly connected to the fixing block (603), the side of the fixing block (603) is provided with a threaded hole (604), and the inner thread of the threaded hole (604) is threadedly connected to the threaded rod (605).

6. The gas leakage alarm device of a gas ultrasonic gas meter according to claim 5, characterized in that: The gas leakage alarm device housing (1) forms a snap-fit ​​structure with the support frame (602) through the fixing block (603), and the gas leakage alarm device housing (1) forms a threaded detachable structure with the threaded hole (604), the threaded rod (605), the fixing block (603) and the support frame (602).

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