Urban gas meter protection device

Abstract

The utility model relates to the technical field of instrument protection devices, and discloses an urban gas instrument protection device which comprises a protection box, and a water vapor prevention mechanism is arranged in the protection box. The water vapor prevention mechanism comprises an instrument body, the bottom face of the instrument body is fixedly connected with the inner bottom wall of the protection box, a sealing door is movably hinged to the front face of the protection box, two connecting pipes are fixedly installed on the inner wall of the protection box, a rubber sleeve is fixedly installed on the inner wall of each connecting pipe, and the outer surface of each rubber sleeve makes contact with the outer surface of the instrument body. Two electric push rods are fixedly installed on the inner wall of each connecting pipe, two expansion pieces are jointly and fixedly installed at the two ends of the two electric push rods, and the inner wall of each expansion piece makes contact with the inner wall of the rubber sleeve. According to the instrument protection device for urban gas, the protection box and the water vapor prevention mechanism are arranged, so that external water vapor is prevented from influencing normal operation of the instrument main body as much as possible, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument protection devices, in particular to an instrument protection device for city gas. Background Art

[0002] Gas is a flammable gas, usually natural gas, petroleum gas, etc. Gas is transported to thousands of households in cities by laying gas pipelines. In order to increase the safety of gas transportation by gas pipelines, city gas meters are usually installed for detection. Existing city gas meter protection devices usually have rubber protective sleeves on the outside for protection, so that city gas meters can be used more safely.

[0003] The utility model with the existing authorization announcement number CN215217714U discloses a city gas meter protection device, including a shell, a connecting ear fixedly connected to the outside of the shell, a sealing plate hinged at the front end of the shell and a glass panel fixedly connected to the inside of the shell, a gas meter is arranged on the inside of the shell, a battery is fixedly connected to the inside of the bottom end of the shell, a processor is fixedly connected to the inside of the shell, and an air inlet is connected to the inside of the bottom end of the shell.

[0004] By adopting the above technical scheme, it is possible to detect whether the gas meter is leaking and to ventilate the shell in time. However, when the device is in use, due to the low sealing of the device, when the device is placed in the outside for a long time, water vapor in the outside air can easily enter the inside of the protective device, thereby causing a certain impact on the components inside the meter, causing the meter to work abnormally, reducing the practicality of the device.

[0005] Therefore, those skilled in the art provide a city gas meter protection device to solve the problems raised in the above background technology. Utility Model Content

[0006] The utility model aims to provide a city gas meter protection device to solve the problem that the meter protection device proposed in the above background technology has low sealing performance, making it easy for external water vapor to enter the inside of the protection device.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A city gas meter protection device comprises a protection box, wherein a water vapor protection mechanism is arranged inside the protection box;

[0009] The waterproof vapor mechanism includes an instrument body, the bottom surface of the instrument body is fixedly connected to the inner bottom wall of the protection box, the front of the protection box is movably hinged with a sealing door, the inner wall of the protection box is fixedly installed with two connecting pipes, the inner wall of each connecting pipe is fixedly installed with a rubber sleeve, the outer surface of each rubber sleeve is in contact with the outer surface of the instrument body, the inner wall of each connecting pipe is fixedly installed with two electric push rods, and two expansion plates are fixedly installed at both ends of the two electric push rods, and the inner wall of each expansion plate is in contact with the inner wall of the rubber sleeve. The two expansion pieces are in contact with each other, and two sets of connecting springs are fixedly installed on one side where the two expansion pieces are close to each other. A humidity sensor is fixedly installed on the inner top wall of the protection box. The upper surface of the protection box is fixedly connected with a delivery pipe, and an air pump is fixedly installed on the inner bottom wall of the delivery pipe. The input end of the air pump passes through the delivery pipe and extends to the outside of the delivery pipe. Three moisture-proof plates are clamped inside the delivery pipe. A hydraulic rod is fixedly installed on the inner bottom wall of the protection box, and a sealing plate is fixedly installed on the telescopic end of the hydraulic rod, and the bottom surface of the sealing plate is in contact with the inner bottom wall of the protection box.

[0010] As a further solution of the utility model: a gas detection sensor is fixedly installed on the inner top wall of the protection box, an exhaust fan is fixedly installed on the inner wall of the protection box, and a buzzer is fixedly installed on the bottom surface of the protection box.

[0011] As a further solution of the utility model: two connecting ears are fixedly installed on both sides of the protection box, and a fixed cone is arranged inside each connecting ear. The end of each fixed cone away from the protection box passes through the connecting ear and extends to the outside of the connecting ear.

[0012] As a further solution of the utility model: a lock block is fixedly installed on the right side of the sealing door, a lock frame is fixedly installed on the right side of the protection box, and the lock block is clamped inside the lock frame.

[0013] As a further solution of the utility model: the sealing door is internally rotatably connected with a ball screw, the outer surface of the ball screw is threadedly connected with a wiping plate, and the front side of the wiping plate contacts the inner wall of the sealing door.

[0014] As a further solution of the utility model: the wiping plate is internally slidably connected with a sliding rod, and the ends of the sliding rods that are away from each other are fixedly connected to the inner wall of the sealing door.

[0015] As a further solution of the utility model: two sliding blocks are fixedly installed on the bottom surface of the sealing plate, and two sliding grooves are provided on the inner bottom wall of the protection box, and each of the sliding blocks is slidably connected inside the sliding groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model is provided with a protection box, an instrument body, a sealing door, a connecting pipe, a rubber sleeve, an electric push rod, an expansion piece and a connecting spring. The power provided by the electric push rod cooperates with the connecting spring to drive the two expansion pieces to move toward one side close to each other, so that the outer surface of the rubber sleeve contacts the outer surface of the instrument body, and at the same time cooperates with the protection box and the sealing door to seal and store the instrument body, so as to avoid the contact between the external water vapor and the electronic components inside the instrument body as much as possible, reduce the damage of the water vapor to the instrument body, and thus achieve the purpose of safely protecting the instrument body. By providing a humidity sensor, a conveying pipe, an air pump, a moisture-proof plate, a hydraulic rod and a sealing plate, the humidity of the environment in which the instrument body is located is monitored in real time by the humidity sensor. When the humidity reaches a certain value, the power provided by the air pump is used to draw the external air into the inside of the conveying pipe, and then the dry air is conveyed to the inside of the protection box after being dried by the moisture-proof plate. At the same time, the power provided by the hydraulic rod is used to drive the sealing plate to move, so as to discharge the humid air, and further ensure the dryness of the instrument body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a city gas instrument protection device;

[0019] Figure 2 It is a cross-sectional view of a three-dimensional structure schematic diagram of a protection box in a city gas meter protection device;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of a cross-sectional view of a connecting pipe in a city gas meter protection device;

[0021] Figure 4 It is a schematic diagram of a three-dimensional structure of a rear cross-sectional view of a protection box in a city gas meter protection device;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of a rear cross-sectional view of a sealing door in a city gas meter protection device.

[0023] In the figure: 1. Protection box; 2. Waterproof and vapor-proof mechanism; 201. Instrument body; 202. Sealing door; 203. Connecting pipe; 204. Rubber sleeve; 205. Electric push rod; 206. Expansion sheet; 207. Connecting spring; 208. Humidity sensor; 209. Delivery pipe; 210. Air pump; 211. Moisture-proof board; 212. Hydraulic rod; 213. Sealing plate; 3. Gas detection sensor; 4. Exhaust fan; 5. Buzzer; 6. Connecting ear; 7. Fixed cone; 8. Lock block; 9. Lock frame; 10. Ball screw; 11. Wiping plate; 12. Sliding rod; 13. Sliding block; 14. Sliding groove. DETAILED DESCRIPTION

[0024] See also Figure 1-5 A city gas meter protection device includes a protection box 1. Two connecting ears 6 are fixedly installed on both sides of the protection box 1. A fixed cone 7 is arranged inside each connecting ear 6. One end of each fixed cone 7 away from the protection box 1 passes through the connecting ear 6 and extends to the outside of the connecting ear 6. The protection box 1 is fixed at the gas pipeline connection by using the fixed cone 7 and the connecting ear 6, so as to avoid the protection box 1 from moving on its own as much as possible, thereby ensuring the stability of the protection box 1.

[0025] A water-proof mechanism 2 is provided inside the protective box 1; the water-proof mechanism 2 includes an instrument body 201, the bottom surface of the instrument body 201 is fixedly connected to the inner bottom wall of the protective box 1, and a sealing door 202 is movably hinged on the front of the protective box 1. The front of the sealing door 202 is provided with glass, so that workers can conveniently view the data on the instrument body 201. The sealing door 202 is internally rotatably connected to a ball screw 10, and the outer surface of the ball screw 10 is threadedly connected to a wiping plate 11, and the front of the wiping plate 11 is in contact with the inner wall of the sealing door 202. The worker rotates the ball screw 10 so that the ball screw 10 drives the wiping plate 11 to wipe and clean the glass on the sealing door 202, thereby ensuring the cleanliness of the inner surface of the glass.

[0026] Two connecting pipes 203 are fixedly installed on the inner wall of the protection box 1, and a rubber sleeve 204 is fixedly installed on the inner wall of each connecting pipe 203. The outer surface of each rubber sleeve 204 is in contact with the outer surface of the instrument body 201, and the rubber sleeve 204 has good ductility. A gas detection sensor 3 is fixedly installed on the inner top wall of the protection box 1, an exhaust fan 4 is fixedly installed on the inner wall of the protection box 1, and a buzzer 5 is fixedly installed on the bottom surface of the protection box 1. The model of the gas detection sensor 3 is MQ-4. The gas detection sensor 3 is used to monitor in real time whether the instrument body 201 has a gas leak. When gas leakage occurs, an alarm is sounded through the buzzer 5, and the exhaust fan 4 is used to increase the air flow inside the protection box 1, so as to discharge the gas from the inside of the protection box 1.

[0027] Two electric push rods 205 are fixedly installed on the inner wall of each connecting tube 203, and the extension and retraction directions of the two electric push rods 205 are opposite. Two expansion plates 206 are fixedly installed at both ends of the two electric push rods 205. The inner wall of each expansion plate 206 contacts the inner wall of the rubber sleeve 204. Two sets of connecting springs 207 are fixedly installed on the side surfaces of the two expansion plates 206 close to each other. A locking block 8 is fixedly installed on the right side surface of the sealing door 202, and a locking frame 9 is fixedly installed on the right side surface of the protective box 1. The locking block 8 is clamped in the inside of the locking frame 9. The installation of the locking block 8 and the locking frame 9 plays a role in locking the sealing door 202 on the protective box 1, thereby avoiding the phenomenon of the sealing door 202 opening by itself as much as possible, thereby ensuring the stability of the sealing door 202.

[0028] A humidity sensor 208 is fixedly installed on the inner top wall of the protection box 1, and the model of the humidity sensor 208 is SHT71. The upper surface of the protection box 1 is fixedly connected to a delivery pipe 209, and an air pump 210 is fixedly installed on the inner bottom wall of the delivery pipe 209. The input end of the air pump 210 passes through the delivery pipe 209 and extends to the outside of the delivery pipe 209. The inside of the wiping plate 11 is slidably connected to a slide rod 12, and the ends of the slide rod 12 that are away from each other are fixedly connected to the inner wall of the sealing door 202. The installation of the slide rod 12 limits the moving trajectory of the wiping plate 11, thereby minimizing the rotation of the wiping plate 11 during movement, thereby ensuring the stability of the movement of the wiping plate 11.

[0029] Three moisture-proof plates 211 are clamped inside the conveying pipe 209. The moisture-proof plates 211 are made of silicone moisture-proof agent, so that they can absorb water vapor in the air. A hydraulic rod 212 is fixedly installed on the inner bottom wall of the protection box 1. A sealing plate 213 is fixedly installed on the telescopic end of the hydraulic rod 212. The protection box 1 is provided with an air outlet at a position below the sealing plate 213. The bottom surface of the sealing plate 213 contacts the inner bottom wall of the protection box 1. Two sliders 13 are fixedly installed on the bottom surface of the sealing plate 213. Two slide grooves 14 are provided on the inner bottom wall of the protection box 1. Each slider 13 is slidably connected to the inside of the slide groove 14. The shape of the slider 13 is T-shaped, and the shape of the slide groove 14 matches the shape of the slider 13. The installation of the slider 13 and the slide groove 14 limits the moving trajectory of the sealing plate 213, thereby avoiding the phenomenon that the sealing plate 213 deviates from the moving trajectory when moving, thereby ensuring the stability of the movement of the sealing plate 213.

[0030] The working principle of the utility model is as follows: when in use, the worker first uses the fixed pointed cone 7 and the connecting ear 6 to fix the protection box 1 at the position of the gas pipeline, and then fixes the meter body 201 to the gas pipeline, and then uses the power provided by the electric push rod 205 to drive the two expansion pieces 206 to move toward one side close to each other, so that the expansion piece 206 drives the rubber sleeve 204 to expand toward the inside of the connecting pipe 203, so that the outer surface of the rubber sleeve 204 contacts the outer surface of the meter body 201, and then the worker closes the sealing door 202 and clamps the lock frame 9 on the lock block 8, so as to seal and protect the meter body 201. When the humidity sensor 208 detects that the humidity inside the protection box 1 reaches a predetermined range, the humidity sensor 208 controls the hydraulic rod 212 and the air pump 210 to work. The sealing plate 213 is moved by the power provided by the hydraulic rod 212, so that the inside of the protective box 1 is connected with the outside world. Then, the power provided by the air pump 210 is used to transport gas to the inside of the delivery pipe 209, so that the gas passes through the moisture-proof plate 211 to absorb water vapor, and then the dry air is transported to the inside of the protective box 1, and then the humid air is discharged, thereby ensuring the dryness of the inside of the protective box 1 and reducing the influence of water vapor in the air on the operation of the instrument body 201. When the gas detection sensor 3 detects a gas leak, the gas detection sensor 3 controls the operation of the hydraulic rod 212, the exhaust fan 4 and the buzzer 5, and uses the exhaust fan 4 to increase the flow of air inside the protective box 1, thereby discharging the gas from the protective box 1. At the same time, the buzzer 5 is used to sound an alarm, thereby reminding the workers that there is a gas leak.

[0031] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A city gas meter protection device, comprising a protection box (1), characterized in that: The protection box (1) is provided with a water vapor-proof mechanism (2) inside; The waterproof vapor-proof mechanism (2) comprises an instrument body (201), the bottom surface of the instrument body (201) is fixedly connected to the inner bottom wall of the protection box (1), the front of the protection box (1) is movably hinged with a sealing door (202), the inner wall of the protection box (1) is fixedly mounted with two connecting pipes (203), the inner wall of each connecting pipe (203) is fixedly mounted with a rubber sleeve (204), the outer surface of each rubber sleeve (204) is in contact with the outer surface of the instrument body (201), the inner wall of each connecting pipe (203) is fixedly mounted with two electric push rods (205), the two ends of the two electric push rods (205) are jointly fixedly mounted with two expansion plates (206), the inner wall of each expansion plate (206) is in contact with the inner wall of the rubber sleeve (204), Two sets of connecting springs (207) are fixedly installed on the side surfaces of the two expansion plates (206) close to each other, a humidity sensor (208) is fixedly installed on the inner top wall of the protection box (1), a delivery pipe (209) is fixedly connected to the upper surface of the protection box (1), an air pump (210) is fixedly installed on the inner bottom wall of the delivery pipe (209), an input end of the air pump (210) passes through the delivery pipe (209) and extends to the outside of the delivery pipe (209), three moisture-proof plates (211) are clamped inside the delivery pipe (209), a hydraulic rod (212) is fixedly installed on the inner bottom wall of the protection box (1), a sealing plate (213) is fixedly installed on the telescopic end of the hydraulic rod (212), and the bottom surface of the sealing plate (213) is in contact with the inner bottom wall of the protection box (1).

2. A city gas meter protection device according to claim 1, characterized in that: A gas detection sensor (3) is fixedly mounted on the inner top wall of the protection box (1), an exhaust fan (4) is fixedly mounted on the inner wall of the protection box (1), and a buzzer (5) is fixedly mounted on the bottom surface of the protection box (1).

3. A city gas meter protection device according to claim 1, characterized in that: Two connecting ears (6) are fixedly mounted on both sides of the protection box (1), and a fixed pointed cone (7) is arranged inside each of the connecting ears (6). The end of each of the fixed pointed cones (7) away from the protection box (1) passes through the connecting ear (6) and extends to the outside of the connecting ear (6).

4. A city gas meter protection device according to claim 1, characterized in that: A lock block (8) is fixedly mounted on the right side of the sealing door (202), a lock frame (9) is fixedly mounted on the right side of the protection box (1), and the lock block (8) is clamped inside the lock frame (9).

5. A city gas meter protection device according to claim 1, characterized in that: The sealing door (202) is rotatably connected to a ball screw (10) inside, and the outer surface of the ball screw (10) is threadedly connected to a wiping plate (11), and the front surface of the wiping plate (11) is in contact with the inner wall of the sealing door (202).

6. A city gas meter protection device according to claim 5, characterized in that: The wiping plate (11) is internally slidably connected to a sliding rod (12), and the ends of the sliding rod (12) that are away from each other are fixedly connected to the inner wall of the sealing door (202).

7. A city gas meter protection device according to claim 1, characterized in that: Two sliders (13) are fixedly mounted on the bottom surface of the sealing plate (213), and two slide grooves (14) are provided on the inner bottom wall of the protection box (1), and each of the sliders (13) is slidably connected inside the slide groove (14).

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