A device for odorizing natural gas

Abstract

The present invention discloses an odorizing device for natural gas, which belongs to the field of natural gas technology, and comprises an explosion-proof box and a partition fixed in the explosion-proof box, two spray pipes are symmetrically installed at the bottom of the partition, a plurality of spray heads are evenly installed at the bottom of the spray pipe, a double-shaft motor is installed on the surface of the partition, a driving shaft is fixedly connected to the output end of the double-shaft motor, an active bevel gear is fixedly connected to one end of the driving shaft, a receiving cavity is provided in both side plates of the explosion-proof box, and a sealing plate is slidably connected in the receiving cavity, two fixed blocks are fixedly connected to the inner walls of both sides of the explosion-proof box, a lifting screw is rotatably connected in the fixed block through a bearing, and a connecting rod fixedly connected to the sealing plate is threadedly connected to the outer wall of the lifting screw. The odorizing device for natural gas can seal the explosion-proof box when gas leakage occurs in the explosion-proof box, and can quickly process the leaked gas.

Description

Technical Field

[0001] The invention belongs to the technical field of natural gas, and in particular relates to an odorizing device for natural gas. Background Art

[0002] Natural gas is a general term for a mixture of gases with hydrocarbons as the main component existing in underground rock reservoirs. Its main use is as a dye. Natural gas is a colorless, odorless, flammable and explosive gas. Due to its special gas form, it is not easy to detect when it leaks, resulting in a waste of resources. When the leaked natural gas reaches a certain concentration, there are also safety hazards. When natural gas gathers indoors or in a closed environment and reaches a certain ratio with the air, it will trigger a powerful explosion. In order to detect the leakage of natural gas in time, an odorant is usually added to the natural gas and mixed with the natural gas. When the natural gas leaks, the odor can be smelled in time and detected.

[0003] The existing odorization method is mainly drainage pump odorization, but most on-site equipment does not have its own leakage emergency collection pool, and a leakage emergency collection pool must be set up next to the device. This means that when a leak occurs, the odorant needs to pass through the cofferdam and then flow into the collection pool, and the volatilization of the odorant will have a greater impact on the surrounding area. Summary of the invention

[0004] The object of the present invention is to provide an odorizing device for natural gas to solve the problems raised in the above background technology.

[0005] Technical solution: A device for odorizing natural gas, comprising an explosion-proof box and a partition fixed in the explosion-proof box, two spray pipes are symmetrically installed at the bottom of the partition, a plurality of nozzles are evenly installed at the bottom of the spray pipes, and a gas sensor is installed at the bottom of the partition, a dual-axis motor is installed on the surface of the partition, the output end of the dual-axis motor is fixedly connected to a drive shaft, one end of the drive shaft is fixedly connected to an active bevel gear, both side panels of the explosion-proof box are provided with accommodating cavities, and a sealing plate is slidably connected in the accommodating cavity, two fixed blocks are fixedly connected to the inner walls on both sides of the explosion-proof box, a lifting screw is rotatably connected to the fixed block through a bearing, and the outer wall of the lifting screw is threadedly connected to a connecting rod fixedly connected to the sealing plate.

[0006] In a further embodiment, a driven bevel gear meshing with the driving bevel gear is fixedly connected to the top of the lifting screw, and two positioning blocks for supporting the driving shaft are symmetrically provided on the surface of the partition.

[0007] In a further embodiment, ventilation grooves are provided on both side outer walls of the explosion-proof box, and dust covers matching the ventilation grooves are installed on both side outer walls of the explosion-proof box.

[0008] In a further embodiment, a support plate is fixedly connected to the inner wall of the lower half of the explosion-proof box, and a liquid storage tank and a gas storage cylinder are respectively mounted on the surface of the support plate.

[0009] In a further embodiment, a connecting pipe is installed between the liquid storage tank and the gas storage cylinder, a pressure pump is installed on the top of the liquid storage tank, and two liquid level sensors are installed on the inner wall of one side of the liquid storage tank.

[0010] In a further embodiment, a hydraulic cylinder is installed on the top of the gas storage bottle, a sealing plug is installed on the bottom of the hydraulic cylinder, and an exhaust pipe is fixedly connected to the outer wall of one side of the gas storage bottle.

[0011] In a further embodiment, a forward and reverse motor is installed in the dust cover, an output end of the forward and reverse motor is fixedly connected to a lead screw, and an outer wall of the lead screw is threadedly connected to a cleaning plate.

[0012] In a further embodiment, a liquid collecting frame is installed on the bottom wall of the inner cavity of the explosion-proof box, and a drainage pipe is fixedly connected to the outer wall of one side of the liquid collecting frame, and a protective door is installed on the explosion-proof box.

[0013] In a further embodiment, a flow guide pipe communicating with two spray pipes is fixedly connected to one side outer wall of the explosion-proof box, and a water inlet pipe is fixedly connected to one side outer wall of the flow guide pipe away from the explosion-proof box.

[0014] Technical effects and advantages of the present invention:

[0015] The odorizing device for natural gas can accelerate the air circulation in the explosion-proof box and the heat dissipation speed in the explosion-proof box by providing ventilation grooves on both sides of the explosion-proof box. When the gas sensor detects gas leakage, the dual-axis motor drives the driving shaft and the active bevel gear to rotate, and the active bevel gear drives the lifting screw to rotate through the driven bevel gear, thereby driving the sealing plate to rise, sealing the ventilation groove to prevent the volatilization of the odorant; at the same time, the treatment agent is injected into the spray pipe through the water inlet pipe and the guide pipe, and the treatment agent is sprayed into the explosion-proof box through the nozzle, so that the odorant can be quickly processed, and at the same time, the liquid collecting frame can collect the treated odorant for later centralized processing; the forward and reverse motor drives the guide screw to rotate forward and reversely, and drives the cleaning plate to move back and forth in the dust cover, so that the dust cover can be cleaned to prevent the dust cover from being blocked and affecting the heat dissipation effect. When gas leakage occurs in the explosion-proof box, the odorizing device for natural gas can seal the explosion-proof box and quickly process the leaked gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the present invention without a dust cover;

[0018] Figure 3 is a cross-sectional view of the explosion-proof box of the present invention;

[0019] Figure 4 is a cross-sectional view of the dust cover of the present invention;

[0020] Figure 5 For the present invention Figure 3 Enlarged view of point A in the middle.

[0021] In the figure: 1. explosion-proof box; 11. protective door; 12. liquid collecting frame; 13. drain pipe; 14. support plate; 2. liquid storage tank; 21. pressure pump; 22. liquid level sensor; 23. gas storage bottle; 24. connecting pipe; 25. hydraulic cylinder; 26. sealing plug; 27. exhaust pipe; 3. guide pipe; 31. water inlet pipe; 32. spray pipe; 33. nozzle; 4. dust cover; 41. forward and reverse motor; 42. guide screw; 43. cleaning plate; 44. limit column; 45. ventilation groove; 5. partition; 51. dual-axis motor; 52. driving shaft; 53. positioning block; 54. active bevel gear; 55. gas sensor; 6. accommodating chamber; 61. sealing plate; 62. fixing block; 63. lifting screw; 64. connecting rod; 65. moving groove; 66. driven bevel gear. DETAILED DESCRIPTION

[0022] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0023] In order to facilitate the odorization of natural gas, Figure 3As shown, a support plate 14 is welded and fixed to the inner wall of the lower half of the explosion-proof box 1, and a plurality of guide holes are opened on the surface of the support plate 14 to facilitate the flow of liquid in the later stage. A liquid storage tank 2 and a gas storage bottle 23 are respectively installed on the surface of the support plate 14 by bolts. The liquid storage tank 2 is filled with an odorant, and a connecting pipe 24 is installed between the liquid storage tank 2 and the gas storage bottle 23. A solenoid valve is installed on the connecting pipe 24. A pressure pump 21 is installed on the top of the liquid storage tank 2 by bolts, and the outlet pipe of the pressure pump 21 extends into the liquid storage tank 2, and two liquid level sensors 22 are installed on the inner wall of one side of the liquid storage tank 2. It is convenient to monitor the liquid level in the liquid storage tank 2 in real time. A filling pipe is welded and fixed on the top of the liquid storage tank 2, and a sealing cover is installed on the filling pipe. A hydraulic cylinder 25 is installed on the top of the gas bottle 23 by bolts, and a sealing plug 26 is installed on the bottom of the hydraulic cylinder 25. A sealing ring is provided at the connection between the driving rod of the hydraulic cylinder 25 and the gas bottle 23 to ensure the sealing of the gas bottle 23, and an exhaust pipe 27 is fixedly connected to the outer wall of one side of the gas bottle 23. The exhaust pipe 27 extends to the outside of the explosion-proof box 1 and is connected to the natural gas pipeline. A control valve is also installed on the exhaust pipe 27.

[0024] In order to facilitate the heat dissipation of the explosion-proof box 1, Figure 1 , Figure 2 and Figure 4 As shown, ventilation grooves 45 are provided on both sides of the outer wall of the explosion-proof box 1, and dust covers 4 matching the ventilation grooves 45 are installed on the outer walls of both sides of the explosion-proof box 1 through bolts, and dust nets are installed on the dust covers 4 to prevent dust from entering the explosion-proof box 1. A forward and reverse motor 41 is installed in the dust covers 4 through bolts, and the output end of the forward and reverse motor 41 is fixedly connected with a lead screw 42 through a coupling, and one end of the lead screw 42 away from the forward and reverse motor 41 is rotatably connected to the inner wall of the dust cover 4 through a welded bearing, and the outer wall of the lead screw 42 is threadedly connected with a clear A cleaning plate 43 is provided with a cleaning brush at one end of the cleaning plate 43 facing the dust cover 4. Two limiting columns 44 are symmetrically installed in the dust cover 4 by bolts. The cleaning plate 43 slides outside the limiting columns 44, thereby limiting the moving path of the cleaning plate 43 to ensure that the cleaning plate 43 can move horizontally in the dust cover 4. The guide screw 42 is driven by the forward and reverse motor 41 to rotate in a forward and reverse cycle, driving the cleaning plate 43 to move back and forth in the dust cover 4, thereby cleaning the dust cover 4 to avoid clogging of the dust cover 4 and affecting the heat dissipation of the explosion-proof box 1.

[0025] In order to seal the explosion-proof box 1 when gas leaks in the explosion-proof box 1, the leaked gas can be quickly processed, such as Figure 2 , Figure 3 and Figure 5As shown, a protective door 11 is installed on the explosion-proof box 1, and a liquid collecting frame 12 is installed on the bottom wall of the inner cavity of the explosion-proof box 1 by bolts, so as to facilitate the collection of waste liquid, and a drain pipe 13 is welded and fixed to the outer wall of one side of the liquid collecting frame 12, and the drain pipe 13 extends to the outside of the explosion-proof box 1, and a control valve is also installed on the drain pipe 13;

[0026] Two spray pipes 32 are symmetrically installed at the bottom of the partition 5 by bolts, and a plurality of nozzles 33 are installed at equal intervals at the bottom of the spray pipes 32. A guide pipe 3 connected to the two spray pipes 32 is welded and fixed to the outer wall of one side of the explosion-proof box 1. A water inlet pipe 31 is welded and fixed to the outer wall of the guide pipe 3 on the side away from the explosion-proof box 1. The water inlet pipe 31 is connected to the external fire-fighting equipment. When a leak occurs in the explosion-proof box 1, the treatment agent can be injected into the spray pipe 32 through the water inlet pipe 31 and the guide pipe 3 at the first time, and the treatment agent can be sprayed into the explosion-proof box 1 through the nozzle 33, the leaked gas is quickly treated, and the waste liquid is collected through the liquid collecting frame 12. A gas sensor 55 is installed at the bottom of the partition 5 by bolts, which is convenient for real-time monitoring of the explosion-proof box 1. The gas sensor 55 is connected to the control room through the Internet of Things. After the gas leaks, it can issue an alarm at the first time to remind the staff to take corresponding measures;

[0027] A double-axis motor 51 is installed on the surface of the partition 5 by bolts, and the output end of the double-axis motor 51 is fixedly connected to a driving shaft 52 through a coupling, and an active bevel gear 54 is welded and fixed to the end of the driving shaft 52 away from the double-axis motor 51. Two positioning blocks 53 for supporting the driving shaft 52 are symmetrically welded on the surface of the partition 5, and the driving shaft 52 is rotatably connected to the positioning blocks 53 through bearings. An accommodating cavity 6 is provided in both side plates of the explosion-proof box 1, and a sealing plate 61 is slidably connected in the accommodating cavity 6. Two fixing blocks 62 are welded and fixed to the inner walls on both sides of the explosion-proof box 1, and a lifting screw 63 is rotatably connected in the fixing block 62 through a welded bearing. The outer wall of the lifting screw 63 is threadedly connected with a connecting rod 64 welded and fixed to the sealing plate 61. The opposite surfaces of the inner walls on both sides of the explosion-proof box 1 are provided with moving grooves 65 for the connecting rod 64 to move. The lifting screw 63 extends to the top of the partition 5, and the top of the lifting screw 63 is welded and fixed with a driven bevel gear 66 meshing with the active bevel gear 54. When the gas sensor 55 detects gas leakage, the dual-axis motor 51 drives the drive shaft 52 and the active bevel gear 54 to rotate, and the active bevel gear 54 drives the lifting screw 63 to rotate through the driven bevel gear 66, thereby driving the sealing plate 61 to rise, and the ventilation groove 45 is sealed to prevent the odorant from volatilizing.

[0028] Working principle:

[0029] When the odorizing device for natural gas is used, the pressure pump 21 is used to pressurize the liquid storage tank 2, so that the odorant in the liquid storage tank 2 is gasified, and the gasified odorant enters the gas storage bottle 23 through the connecting pipe 24, and the hydraulic cylinder 25 drives the sealing plug 26 to descend, and the gasified odorant is injected into the natural gas pipeline through the exhaust pipe 27, so as to odorize the natural gas;

[0030] When the equipment in the explosion-proof box 1 is working, the outside air enters the explosion-proof box 1 through the dust cover 4 and the ventilation groove 45, which speeds up the air flow in the explosion-proof box 1 and the heat dissipation speed in the explosion-proof box 1. At the same time, the forward and reverse motor 41 is started regularly, and the forward and reverse motor 41 drives the guide screw 42 to rotate in a forward and reverse cycle, driving the cleaning plate 43 to move back and forth in the dust cover 4, so as to clean the dust cover 4 and avoid the dust cover 4 being blocked and affecting the heat dissipation of the explosion-proof box 1;

[0031] The explosion-proof box 1 is monitored in real time by the gas sensor 55. When gas leakage occurs, the dual-axis motor 51 drives the driving shaft 52 and the active bevel gear 54 to rotate, and the active bevel gear 54 drives the lifting screw 63 to rotate through the driven bevel gear 66. The lifting screw 63 drives the sealing plate 61 to rise through the connecting rod 64, and the ventilation groove 45 is sealed to prevent the odorant from volatilizing. At the same time, the treatment agent is injected into the spray pipe 32 through the water inlet pipe 31 and the guide pipe 3, and the treatment agent is sprayed into the explosion-proof box 1 through the nozzle 33, so that the leaked gas is quickly treated, and the waste liquid is collected by the liquid collecting frame 12.

[0032] Finally, it should be noted that the above is only the preferred content of the present invention and is not intended to limit the present invention.

Claims

1. A device for odorizing natural gas, comprising an explosion-proof box (1) and a partition (5) fixed in the explosion-proof box (1), characterized in that: Two spray pipes (32) are symmetrically installed at the bottom of the partition (5), a plurality of spray heads (33) are installed at equal intervals at the bottom of the spray pipe (32), and a gas sensor (55) is installed at the bottom of the partition (5). A double-axis motor (51) is installed on the surface of the partition (5), the output end of the double-axis motor (51) is fixedly connected to a drive shaft (52), and one end of the drive shaft (52) is fixedly connected to an active bevel gear (54). Both side plates of the explosion-proof box (1) are provided with a receiving cavity (6), and a sealing plate (61) is slidably connected in the receiving cavity (6). Two fixed blocks (62) are fixedly connected to the inner walls of both sides of the explosion-proof box (1), and a lifting screw (63) is rotatably connected in the fixed block (62) through a bearing, and the outer wall of the lifting screw (63) is threadedly connected to a connecting rod (64) fixedly connected to the sealing plate (61); A liquid collecting frame (12) is installed on the bottom wall of the inner cavity of the explosion-proof box (1), and a drainage pipe (13) is fixedly connected to an outer wall of one side of the liquid collecting frame (12); and a protective door (11) is installed on the explosion-proof box (1); A flow guide pipe (3) connected to two spray pipes (32) is fixedly connected to one side of the outer wall of the explosion-proof box (1); a water inlet pipe (31) is fixedly connected to the outer wall of the flow guide pipe (3) away from the side of the explosion-proof box (1); A driven bevel gear (66) meshing with the driving bevel gear (54) is fixedly connected to the top of the lifting screw (63); and two positioning blocks (53) for supporting the driving shaft (52) are symmetrically provided on the surface of the partition plate (5); Both side outer walls of the explosion-proof box (1) are provided with ventilation grooves (45), and both side outer walls of the explosion-proof box (1) are provided with dust covers (4) matching the ventilation grooves (45); A support plate (14) is fixedly connected to the inner wall of the lower half of the explosion-proof box (1), and a liquid storage tank (2) and a gas storage bottle (23) are respectively mounted on the surface of the support plate (14); A connecting pipe (24) is installed between the liquid storage tank (2) and the gas storage bottle (23), a pressure pump (21) is installed on the top of the liquid storage tank (2), and two liquid level sensors (22) are installed on the inner wall of one side of the liquid storage tank (2); A hydraulic cylinder (25) is installed on the top of the gas storage bottle (23), a sealing plug (26) is installed on the bottom of the hydraulic cylinder (25), and an exhaust pipe (27) is fixedly connected to the outer wall of one side of the gas storage bottle (23); A forward and reverse motor (41) is installed in the dust cover (4), the output end of the forward and reverse motor (41) is fixedly connected to a lead screw (42), and the outer wall of the lead screw (42) is threadedly connected to a cleaning plate (43).

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