A valve well gas alarm

Abstract

This invention relates to the field of well alarm technology, and more particularly to a valve well gas alarm, comprising a housing and a mounting box. A track is fixedly connected to the inner wall of the housing, and a groove is formed in the track. A slider is fixedly connected to one side of the mounting box, and the slider is slidably connected in the groove. A sealing component is installed inside the mounting box, comprising an alarm, an I-shaped plate, an air bladder, and a movable plate. The alarm is installed inside the mounting box. Two movable plates are slidably connected to the side walls at both ends of the mounting box, and the I-shaped plate is slidably connected between the two movable plates. In this invention, the air bladder expands as gas increases, pushing the movable plates away from each other. When the two ends of the air bladder move to fit against the side walls of the mounting box, the mounting box can be sealed, preventing sewage from entering the mounting box and damaging the alarm.

Description

Technical Field

[0001] This invention relates to the field of well alarm technology, and more particularly to a valve well gas alarm. Background Technology

[0002] A valve well is a pit (or well) similar to a small room set up for valves in underground pipelines and conduits (such as water, oil, and natural gas pipelines) to facilitate the opening and closing of parts of the pipeline or for maintenance work. Valves are installed in this pit, which is a key component for regular inspection, cleaning, and unblocking of the pipeline, and to prevent pipeline blockage.

[0003] In the existing technology, most sewage wells are equipped with gas monitoring alarms to measure the gas inside the well. Since the alarms are installed on the inner wall of the well, when the sewage level in the well is too high, the sewage will overflow the fixed alarms, causing them to be damaged. Summary of the Invention

[0004] The purpose of this invention is to address the following shortcomings in the prior art: In the prior art, gas monitoring alarms are mostly installed in sewage wells to measure the gas inside the well. Since the alarms are installed on the inner wall of the well, when the sewage level in the well is too high, the sewage will overflow the fixedly installed alarms, causing damage to the alarms. Therefore, a valve well gas alarm is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A valve well gas alarm includes a housing and a mounting box. A track is fixedly connected to the inner wall of the housing, and a groove is formed in the track. A slider is fixedly connected to one side of the mounting box, and the slider is slidably connected in the groove. The mounting box contains a sealing component, which includes an alarm, an I-shaped plate, an airbag, and a movable plate. The alarm is installed inside the mounting box. The two movable plates are slidably connected to the side walls at both ends of the mounting box. The I-shaped plate is slidably connected between the two movable plates. The two airbags are fixedly connected between the inner side wall of the I-shaped plate and the movable plate. Two rack plates are fixedly connected to the mounting box. A fixing plate is fixedly connected between the ends of the two rack plates away from the mounting box. The fixing plate is slidably connected to the outer surface of the track. A buoyancy column is fixedly connected to the fixing plate.

[0006] Preferably, the sealing component further includes an elliptical cylinder, a piston, a gear, and a rotating shaft. Both elliptical cylinders are fixedly connected to the inner wall of the outer shell. One end of the rotating shaft is rotatably connected inside the elliptical cylinder. The piston is slidably connected inside the elliptical cylinder. The piston is threadedly connected to the rotating shaft. The two elliptical cylinders are respectively connected to the airbag through connecting pipes. The gear is fixedly connected to the end of the rotating shaft away from the elliptical cylinder.

[0007] Preferably, the upper end of the mounting box is fixedly connected to two square cavities, and a clamping plate is slidably connected inside the square cavity. Both clamping plates are L-shaped. A push block is fixedly connected to the end of the clamping plate away from the square cavity. The push block is located on one side of the movable plate.

[0008] Preferably, the two ends of the outer shell are respectively fixedly connected to pipes, and a plurality of limiting blocks arranged in a ring array are fixedly connected to the inner wall of the outer shell.

[0009] Preferably, a storage cavity is fixedly connected to both sides of the outer shell, and a pressure plate is slidably connected inside the storage cavity. The pressure plate is L-shaped and has an anti-slip pad on its inner wall.

[0010] Preferably, a cylinder is fixedly connected to the storage cavity, and a screw is rotatably connected inside the cylinder, the screw being threadedly connected to the pressure plate.

[0011] Preferably, a cover plate is installed on the upper end of the outer shell, and a rubber ring is fitted onto the lower outer surface of the cover plate.

[0012] Preferably, the two gears are located on one side of the two rack plates, and the gears mesh with the rack plates.

[0013] Preferably, each of the two screws has a handle at its upper end.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. When the sewage level inside the casing rises, the sewage will come into contact with the buoyancy column, thus pushing the buoyancy column upward. As the mounting box moves upward with the buoyancy column via the rack plate, it can still maintain a certain distance from the sewage, preventing the sewage from contacting the alarm. This can cope with a small increase in the sewage level inside the casing.

[0015] 2. When the rotating shaft rotates with the gear, it can drive the piston to move inside the elliptical cylinder, which can squeeze the gas inside the elliptical cylinder to flow through the connecting pipe into the air bladder in the I-shaped plate. At this time, the air bladder expands as the gas increases, and pushes the moving plates away from each other. When the two ends of the air bladder move to fit against the side wall of the mounting box, it can seal the mounting box and prevent sewage from entering the mounting box and causing damage to the alarm.

[0016] 3. When it is necessary to replace the alarm inside the mounting box, the clamps on both sides of the mounting box need to be moved to the center. When the clamps are moved to the center, the moving plate can be moved to the center by pushing the push block. At this time, the moving plate retracts into the mounting box, and the I-shaped plate and the alarm can be taken out together.

[0017] 4. Therefore, the bottom outer surface of the cover plate is inside the outer shell and above the limiting block, while the upper part of the cover plate is at the upper end of the outer shell. The rubber ring is located between the outer surface of the cover plate and the inner wall of the outer shell, which increases the sealing effect of the cover plate on the upper end of the outer shell and prevents internal gas from escaping to the outside of the outer shell and affecting pedestrians.

[0018] 5. When the cover plate is placed on the upper part of the outer shell, push the handle and drive the screw to rotate. When the screw rotates, it can drive the threaded connection on the pressure plate to move downward. As the pressure plate moves downward, it can squeeze the upper part of the cover plate and form a quick fixing effect of the cover plate on the outer shell. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the internal structure of the outer shell of a valve well gas alarm device proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of the mounting box for a valve well gas alarm proposed in this invention; Figure 3 This is a schematic diagram of the internal structure of the elliptical cylinder of a valve well gas alarm device proposed in this invention; Figure 4 for Figure 1 A magnified schematic diagram of the structure of part A in the diagram; Figure 5 This is a front structural diagram of a valve well gas alarm proposed in this invention; Figure 6 This is a schematic diagram of the I-shaped plate structure of a valve well gas alarm proposed in this invention; Figure 7 This is a schematic diagram of the rubber pad structure of a valve well gas alarm proposed in this invention.

[0020] In the diagram: 1. Outer shell, 2. Buoyancy column, 3. Mounting box, 4. Elliptical cylinder, 5. Limiting block, 6. Pipe, 7. Fixing plate, 8. Track, 9. Piston, 10. Gear, 11. Shaft, 12. Connecting pipe, 13. Square cavity, 14. Clamping plate, 15. Push block, 16. Moving plate, 17. I-shaped plate, 18. Airbag, 19. Alarm, 20. Slider, 21. Rack plate, 22. Cylinder, 23. Pressure plate, 24. Cover plate, 25. Screw, 26. Storage cavity, 27. Rubber ring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Reference Figures 1-7 A valve well gas alarm includes a housing 1 and a mounting box 3. A track 8 is fixedly connected to the inner wall of the housing 1 (which is the valve well in the prior art). A groove is formed within the track 8. A slider 20 is fixedly connected to one side of the mounting box 3. The slider 20 is slidably connected within the groove, which limits its movement, preventing it from detaching. A cover plate 24 is installed at the upper end of the housing 1, and a rubber ring 27 is fitted onto the lower outer surface of the cover plate 24. Pipes 6 are fixedly connected to both ends of the housing 1. Multiple limiting devices arranged in a ring array are fixedly connected to the inner wall of the housing 1. Block 5 has storage cavities 26 fixedly connected to both sides of the outer shell 1. A pressure plate 23 is slidably connected inside the storage cavity 26. The pressure plate 23 is L-shaped and has an anti-slip pad on its inner wall. When the pressure plate 23 is pressed against the upper surface of the cover plate 24 through the anti-slip pad, it can not only exert a downward pressure on the cover plate 24 to achieve the effect of fixing, but also prevent the cover plate 24 from rotating. A cylinder 22 is fixedly connected to the storage cavity 26. A screw 25 is rotatably connected inside the cylinder 22. The screw 25 is threadedly connected to the pressure plate 23. Each of the two screws 25 has a handle at its upper end, which can be used to push the screw 25 to rotate.

[0023] The mounting box 3 contains a sealing component, which includes an alarm 19, an I-beam plate 17, an airbag 18, and a movable plate 16. The alarm 19 (used for gas monitoring, is existing technology and will not be explained in detail here) is installed inside the mounting box 3. Two movable plates 16 are slidably connected to the side walls at both ends of the mounting box 3. The I-beam plate 17 is slidably connected between the two movable plates 16. Two airbags 18 are fixedly connected between the inner side wall of the I-beam plate 17 and the movable plates 16. The sealing component also includes an elliptical cylinder 4, a piston 9, a gear 10, and a rotating shaft 11. Both elliptical cylinders 4 are fixedly connected to the inner wall of the outer casing 1. One end of the rotating shaft 11 rotates... The piston 9 is slidably connected inside the elliptical cylinder 4 and the rotating shaft 11 is threadedly connected to the rotating shaft 11. The end of the elliptical cylinder 4 near the gear 10 is not sealed. The two elliptical cylinders 4 are connected to the airbag 18 through the connecting pipe 12. The gear 10 is fixedly connected to the end of the rotating shaft 11 away from the elliptical cylinder 4. The two gears 10 are located on one side of the two rack plates 21. The gears 10 mesh with the rack plates 21. When the sewage level continues to rise, the installation box 3 will continue to move upward. At this time, the rack plates 21 mesh with the gears 10 and drive the gears 10 to rotate. When the rotating shaft 11 rotates with the gears 10, it can drive the piston 9 to move inside the elliptical cylinder 4.

[0024] Two rack plates 21 are fixedly connected to the mounting box 3. A fixing plate 7 is fixedly connected between the ends of the two rack plates 21 away from the mounting box 3. The fixing plate 7 is slidably connected to the outer surface of the track 8. A buoyancy column 2 is fixedly connected to the fixing plate 7. The buoyancy column 2 has strong buoyancy and can push the buoyancy column 2 and the mounting box 3 upward when the sewage water level rises. Two square cavities 13 are fixedly connected to the upper end of the mounting box 3. A clamping plate 14 is slidably connected inside the square cavity 13. Both clamping plates 14 are L-shaped. The ends of the clamping plates 14 away from the square cavity 13 are fixedly connected to... A pusher block 15 is attached to one side of the movable plate 16. When the movable plate 16 slides on the side wall of the mounting box 3, it can limit the I-shaped plate 17, so that the I-shaped plate 17 is inside the mounting box 3. At the same time, the movable plate 16 can guide the movement of the airbag 18 during the expansion process. As the gas increases, the airbag 18 expands and pushes the movable plate 16 away from each other. At this time, after the two ends of the airbag 18 move to fit against the side wall of the mounting box 3, the mounting box 3 can be sealed to prevent sewage from entering the mounting box 3 and causing damage to the alarm 19.

[0025] In this invention, the mounting box 3 is first slid into the groove on the track 8 via the slider 20. When the sewage level inside the outer casing 1 increases, the sewage will come into contact with the buoyancy column 2, thereby pushing the buoyancy column 2 upward. When the mounting box 3 moves upward with the buoyancy column 2 via the rack plate 21, it can still maintain a certain distance from the sewage, preventing the sewage from contacting the alarm 19. When the sewage level continues to rise, the mounting box 3 will continue to move upward. At this time, the rack plate 21 meshes with the gear 10 and drives the gear 10 to rotate. When the rotating shaft 11 rotates with the gear 10, it can drive the piston 9 to move inside the elliptical cylinder 4, which can squeeze the gas inside the elliptical cylinder 4 to flow through the connecting pipe 12 into the airbag 18 in the I-shaped plate 17. At this time, the airbag 18 expands as the gas increases, and pushes the moving plates 16 away from each other. At this time, after the two ends of the airbag 18 move to fit against the side wall of the mounting box 3, it can seal the mounting box 3, preventing sewage from entering the mounting box 3 and causing damage to the alarm 19.

[0026] When the sewage level drops and the sewage no longer exerts buoyancy on the buoyancy column 2, the buoyancy column 2 and the mounting box 3 will move downward under their own weight. At this time, the rack plate 21 drives the gear 10 to rotate in the opposite direction. When the gear 10 and the rotating shaft 11 rotate in the opposite direction, they can drive the piston 9 to reset and move. At this time, the gas in the airbag 18 flows back into the elliptical cylinder 4 and no longer seals the mounting box 3. When the alarm 19 in the mounting box 3 needs to be replaced, the clamping plates 14 on both sides of the mounting box 3 need to be pushed to move in the center. When the clamping plates 14 move in the center, they can push the moving plate 16 to move in the center through the push block 15. At this time, the moving plate 16 retracts into the mounting box 3. At this time, the I-shaped plate 17 and the alarm 19 can be taken out together.

[0027] After the alarm 19 is installed, the cover plate 24 is placed on the upper end of the housing 1. Since the bottom diameter of the cover plate 24 is smaller than the top diameter, the bottom outer surface of the cover plate 24 is inside the housing 1 and on the upper side of the limiting block 5, while the upper end of the cover plate 24 is at the upper end of the housing 1. The rubber ring 27 is located between the outer surface of the cover plate 24 and the inner wall of the housing 1, which increases the sealing effect of the cover plate 24 on the upper end of the housing 1 and prevents the internal gas from escaping to the outside of the housing 1 and affecting pedestrians.

[0028] When the cover plate 24 is placed on the upper end of the outer casing 1, the handle is pushed and the screw 25 is rotated. When the screw 25 rotates, it can drive the threaded connection on the pressure plate 23 to move downward. As the pressure plate 23 moves downward, it can press against the upper end of the cover plate 24 and form a fixing effect of the cover plate 24 on the outer casing 1.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A valve chamber gas alarm comprising a housing (1) and a mounting box (3), characterized in that A track (8) is fixedly connected to the inner wall of the outer shell (1), and a groove is provided in the track (8). A slider (20) is fixedly connected to one side of the mounting box (3), and the slider (20) is slidably connected in the groove. The mounting box (3) is equipped with a sealing component, which includes an alarm (19), an I-shaped plate (17), an airbag (18), and a movable plate (16). The alarm (19) is installed inside the mounting box (3). The two movable plates (16) are slidably connected to the side walls at both ends of the mounting box (3). The I-shaped plate (17) is slidably connected between the two movable plates (16). The two airbags (18) are fixedly connected between the inner side wall of the I-shaped plate (17) and the movable plate (16). Two rack plates (21) are fixedly connected to the mounting box (3). A fixing plate (7) is fixedly connected between the ends of the two rack plates (21) away from the mounting box (3). The fixing plate (7) is slidably connected to the outer surface of the track (8). A buoyancy column (2) is fixedly connected to the fixing plate (7).

2. A valve chamber gas alarm according to claim 1, wherein, The sealing component also includes an elliptical cylinder (4), a piston (9), a gear (10), and a rotating shaft (11). Both elliptical cylinders (4) are fixedly connected to the inner wall of the outer shell (1). One end of the rotating shaft (11) is rotatably connected inside the elliptical cylinder (4). The piston (9) is slidably connected inside the elliptical cylinder (4). The piston (9) is threadedly connected to the rotating shaft (11). The two elliptical cylinders (4) are respectively connected to the airbag (18) through a connecting pipe (12). The gear (10) is fixedly connected to the end of the rotating shaft (11) away from the elliptical cylinder (4).

3. A valve vault gas alarm according to claim 1, wherein, The upper end of the mounting box (3) is fixedly connected to two square cavities (13), and a clamping plate (14) is slidably connected inside the square cavity (13). Both clamping plates (14) are L-shaped. A push block (15) is fixedly connected to one end of the clamping plate (14) away from the square cavity (13). The push block (15) is located on one side of the moving plate (16).

4. A valve vault gas alarm according to claim 1, wherein, The outer shell (1) has pipes (6) fixedly connected to both ends, and multiple limiting blocks (5) arranged in a ring array are fixedly connected to the inner wall of the outer shell (1).

5. A valve vault gas alarm according to claim 1, wherein, The outer shell (1) has storage cavities (26) fixedly connected to both sides. A pressure plate (23) is slidably connected inside the storage cavity (26). The pressure plate (23) is L-shaped and has an anti-slip pad on its inner wall.

6. A valve chamber gas alarm according to claim 5, wherein, A cylinder (22) is fixedly connected to the storage cavity (26), and a screw (25) is rotatably connected inside the cylinder (22). The screw (25) is threadedly connected to the pressure plate (23).

7. A valve vault gas alarm according to claim 1 wherein, The upper end of the outer shell (1) is fitted with a cover plate (24), and a rubber ring (27) is fitted onto the lower outer surface of the cover plate (24).

8. A valve chamber gas alarm according to claim 2, wherein, The two gears (10) are located on one side of the two rack plates (21), and the gears (10) mesh with the rack plates (21).

9. A valve vault gas alarm according to claim 6, wherein, Each of the two screws (25) has a handle at its upper end.

Images