Natural gas long-distance pipeline leakage test alarm

Abstract

The utility model discloses a natural gas long-distance pipeline leakage test alarm, which comprises a pipeline, the top of the pipeline is movably connected with an upper protective shell, the left side and the right side of the upper protective shell are fixedly connected with first connecting blocks, and the bottom of the pipeline is movably connected with a lower protective shell. By arranging the first limiting block and the first limiting groove, the first connecting block and the second connecting block can be conveniently connected, the second limiting block can be inserted into the second limiting groove, the stability when the first connecting block and the second connecting block are connected is improved, meanwhile, the upper protective shell and the lower protective shell can be conveniently disassembled and assembled, and the practicability is high. The flange at the joint of the pipeline is protected and positioned through the upper protection shell and the lower protection shell, when gas leakage occurs at the joint, the alarm can sense natural gas leaked in the upper protection shell and the lower protection shell and can give an alarm, and positioning can be performed when the upper protection shell and the lower protection shell are connected by arranging a limiting plate; and the first connecting block and the second connecting block can be aligned conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas pipeline leak alarm technical field, concretely is a kind of natural gas long-distance pipeline leak testing alarm. BACKGROUND

[0002] Gas is the general term of gaseous fuel, it can burn and release heat, for residents and industrial enterprises use, there are many kinds of gas, mainly natural gas, artificial gas and pipeline natural gas etc., natural gas is a clean and environmentally friendly high-quality energy, but the leakage of natural gas still cannot be ignored, natural gas is transported through pipeline, and pipe and pipe are connected through flange, but when natural gas leaks, since flange is exposed to air, so the leakage of flange cannot be detected, and cannot timely send alarm, people cannot take corresponding measures in time, resulting in a large amount of waste of resources, and there is a certain security risk.

[0003] The natural gas pipeline leak alarm device disclosed in the patent application with publication number CN214425703U forms a closed space at the natural gas pipeline connection by setting the upper sealing box body and the lower sealing box body, concentrates natural gas, facilitates detection of natural gas, and sets double natural gas sensors for real-time detection, increases detection accuracy and optimizes detection effect. The integrated drive board drives the servo motor, alarm lamp and buzzer to work simultaneously, performs natural gas leak alarm and reminder, optimizes alarm effect, and drives the rotating shaft to rotate through the servo motor, ventilates through rotating fan blades, discharges leaked natural gas, reduces natural gas concentration and improves safety. However, the structure relies on four bolts outside the left and right connecting plates to disassemble, position and assemble the upper sealing box body and the lower sealing box body of the device, and special tools are needed to disassemble and assemble the device, which is time-consuming and laborious. UTILITY MODEL CONTENT

[0004] To solve the problems in the above background art, the utility model aims to provide a natural gas long-distance pipeline leak testing alarm, which has the advantage of facilitating disassembly and assembly of the alarm.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a natural gas long -distance pipeline leak test alarm, including the pipeline, the top of pipeline swing joint has upper protective shell, the left and right sides of upper protective shell all are fixedly connected with first connecting block, the bottom of pipeline swing joint has lower protective shell, upper protective shell is swing joint with lower protective shell, the left and right sides of lower protective shell all are fixedly connected with second connecting block, the top of upper protective shell is fixedly connected with alarm, the bottom of first connecting block is equipped with first recess, the inner wall of first recess is rotatably connected with screw rod, the outside screw thread of screw rod is connected with first moving block, first moving block is connected with first recess slidingly, the bottom of first connecting block is equipped with first limit slot, the top of second connecting block is fixedly connected with first limit block, first limit block is swing joint with first limit slot, one side of first moving block is fixedly connected with second limit block, second limit block is connected with first connecting block slidingly, the inside of first limit block is equipped with second limit slot, second limit block is swing joint with second limit slot, the bottom of second connecting block is equipped with second recess, the inside sliding connection of second recess has second moving block, the front and back sides of second moving block all are fixedly connected with limit plate, limit plate is connected with second connecting block slidingly.

[0006] As the utility model is preferred, the top of the upper protective shell is swing joint with a protective shell, the left and right sides of the protective shell are communicated with a ventilation pipe, the left and right sides of the protective shell are provided with a ventilation opening, the inside of the ventilation pipe and the ventilation opening is fixedly connected with a filter screen.

[0007] As the utility model is preferred, the front and back sides of the upper protective shell are fixedly connected with a first sealing gasket, the front and back sides of the lower protective shell are fixedly connected with a second sealing gasket, the first sealing gasket is attached to the second sealing gasket, the inside of the limit plate is provided with a clamping groove, the first sealing gasket, the second sealing gasket are swing joint with the clamping groove, the inside of the first sealing gasket and the second sealing gasket is attached to the pipeline.

[0008] As the utility model is preferred, the top of the upper protective shell is provided with a mounting groove, the mounting groove is swing joint with the protective shell, the bottom of the protective shell is fixedly connected with a limit rod, the surface of the upper protective shell is provided with a limit hole, the limit rod is slidingly connected with the limit hole.

[0009] As the utility model is preferred, the top of the lower protective shell is fixedly connected with a sealing block, the surface of the sealing block is attached to the upper protective shell.

[0010] As the utility model is preferred, the inside of the second recess is fixedly connected with a spring, one end of the spring is fixedly connected with the second moving block, the bottom of the second moving block is fixedly connected with a pull block, the pull block is slidingly connected with the second recess.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、 The utility model discloses a first limiting block and first limiting groove are set up, and first connecting block and second connecting block are connected, and second limiting block can be inserted into second limiting groove, and the stability when first connecting block and second connecting block are connected is increased, and the upper protective shell and lower protective shell are convenient to disassemble, and the flange at the pipeline connecting portion is positioned by the upper protective shell and lower protective shell, when the connecting portion leaks, the alarm can sense the natural gas that leaks in the upper protective shell and lower protective shell, and can alarm, and the limiting plate is set up, and the upper protective shell and lower protective shell are positioned when being connected, and first connecting block and second connecting block are aligned.

[0013] 2、 The utility model discloses a protective shell and ventilation pipe, and the protective shell is transparent material, can protect and observe the alarm, and the ventilation pipe can transmit the sound of alarm, and the opening of ventilation pipe is set down, prevents rainwater from entering the protective shell, and the ventilation opening is convenient to discharge the water drop in the protective shell, and increases the ventilation in the protective shell, and the filter screen is set up, and the dust in the protective shell is filtered, and rainwater is prevented from entering the protective shell, and the alarm is protected. DRAWINGS

[0014] Figure 1 It is the structure schematic drawing of the utility model;

[0015] Figure 2 It is the structure schematic drawing of the upper protective shell top of the utility model;

[0016] Figure 3 It is the structure schematic drawing of the lower protective shell top of the utility model;

[0017] Figure 4 It is the structure schematic drawing of the protective shell bottom of the utility model;

[0018] Figure 5 It is the structure schematic drawing of the second recess of the utility model;

[0019] Figure 6 It is the structure schematic drawing of the first connecting block and second connecting block of the utility model.

[0020] In the figure: 1. pipeline; 2. upper protective shell; 3. first connecting block; 4. lower protective shell; 5. second connecting block; 6. alarm; 7. first groove; 8. screw; 9. first moving block; 10. first limiting groove; 11. first limiting block; 12. second limiting block; 13. second limiting groove; 14. second groove; 15. second moving block; 16. limiting plate; 17. protective shell; 18. ventilation pipe; 19. ventilation port; 20. first sealing gasket; 21. second sealing gasket; 22. mounting groove; 23. limiting rod; 24. limiting hole; 25. sealing block; 26. spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 6 As shown, a long-distance natural gas pipeline leakage test alarm includes a pipeline 1, a flange is fixedly connected to the surface of the pipeline 1, an upper protective shell 2 is movably connected to the top of the pipeline 1, and the left and right sides of the upper protective shell 2 are fixedly connected to the first connecting block 3, and the bottom of the pipeline 1 is movably connected to the lower protective shell 4, the upper protective shell 2 is movably connected to the lower protective shell 4, and the left and right sides of the lower protective shell 4 are fixedly connected to the second connecting block 5, the upper protective shell 2 and the lower protective shell 4 are located on the outside of the flange, the bottom of the first connecting block 3 is fitted with the top of the second connecting block 5, the top of the upper protective shell 2 is fixedly connected to an alarm 6, and the bottom of the alarm 6 is electrically connected to a natural gas leakage detection probe located at the bottom of the upper protective shell 2. When the natural gas detection probe detects leaked natural gas, the natural gas detection probe alarms through the alarm 6, and a first groove is provided at the bottom of the first connecting block 3. 7. The inner wall of the first groove 7 is rotatably connected with a screw rod 8, and the outer side of the screw rod 8 is threadedly connected with a first moving block 9. The first moving block 9 is slidably connected to the first groove 7. A first limiting groove 10 is provided at the bottom of the first connecting block 3, and a first limiting block 11 is fixedly connected to the top of the second connecting block 5. The first limiting block 11 is movably connected to the first limiting groove 10. One side of the first moving block 9 is fixedly connected with a second limiting block 12, and the second limiting block 12 is slidably connected to the first connecting block 3. A second limiting groove 13 is provided inside the first limiting block 11, and the second limiting block 12 is movably connected to the second limiting groove 13. A second groove 14 is provided at the bottom of the second connecting block 5, and a second moving block 15 is slidably connected to the inside of the second groove 14. The front and rear sides of the second moving block 15 are fixedly connected to a limiting plate 16, and the limiting plate 16 is slidably connected to the second connecting block 5.

[0023] Reference Figures 1 to 6 The top of the upper protective shell 2 is movably connected with a protective shell 17, ventilation pipes 18 are communicated with the left and right sides of the protective shell 17, ventilation openings 19 are formed in the left and right sides of the protective shell 17, and filter screens are fixedly connected with the interiors of the ventilation pipes 18 and the ventilation openings 19.

[0024] As a technical optimization scheme of the utility model, the protective shell 17 and the ventilation pipe 18 are arranged, the protective shell 17 is made of transparent material, the alarm 6 can be protected and observed, the sound of the alarm 6 can be transmitted through the ventilation pipe 18, the opening of the ventilation pipe 18 is arranged downward to prevent rainwater from entering the protective shell 17, the ventilation openings 19 facilitate the drainage of water droplets in the protective shell 17 and increase the ventilation of the interior of the protective shell 17, the filter screens can filter dust entering the protective shell 17 and prevent rainwater from entering the protective shell 17 to protect the alarm 6.

[0025] Reference Figures 1 to 6 The front and back sides of the upper protective shell 2 are fixedly connected with first sealing pads 20, the front and back sides of the lower protective shell 4 are fixedly connected with second sealing pads 21, the first sealing pads 20 and the second sealing pads 21 are attached, clamping grooves are formed in the inner sides of the limiting plates 16, the first sealing pads 20 and the second sealing pads 21 are movably connected with the clamping grooves, exhaust holes are formed in the bottoms of the first sealing pads 20 and the upper protective shell 2, and the inner sides of the first sealing pads 20 and the second sealing pads 21 are attached with the pipeline 1.

[0026] As a technical optimization scheme of the utility model, the first sealing pads 20 and the second sealing pads 21 are arranged to increase the sealing performance of the connection between the upper protective shell 2 and the lower protective shell 4, the clamping grooves are connected with the first sealing pads 20 and the second sealing pads 21 when the limiting plates 16 move to the middle, and the stability of the connection between the first sealing pads 20 and the second sealing pads 21 is increased.

[0027] Reference Figures 1 to 6 An installation groove 22 is formed in the top of the upper protective shell 2, the installation groove 22 is movably connected with the protective shell 17, a limiting rod 23 is fixedly connected with the bottom of the protective shell 17, limiting holes 24 are formed in the surface of the upper protective shell 2, and the limiting rod 23 is slidably connected with the limiting holes 24.

[0028] As a technical optimization scheme of the utility model, the limiting rod 23 and the installation groove 22 are arranged to facilitate the dismounting of the protective shell 17 and the maintenance of the alarm 6.

[0029] Reference Figures 1 to 6 A sealing block 25 is fixedly connected with the top of the lower protective shell 4, and the surface of the sealing block 25 is attached with the upper protective shell 2.

[0030] As a technical optimization scheme of the utility model, the sealing block 25 is arranged, which can increase the sealing property of the connection between the upper protective shell 2 and the lower protective shell 4, and prevent the natural gas from leaking out.

[0031] Reference Figures 1 to 6 The inner wall of the second groove 14 is fixedly connected with a spring 26, one end of the spring 26 is fixedly connected with the second moving block 15, and the bottom of the second moving block 15 is fixedly connected with a pull block which is slidingly connected with the second groove 14.

[0032] As a technical optimization scheme of the utility model, the spring 26 and the pull block are arranged, the spring 26 can automatically push the second moving block 15 to move to the middle, and the stability of the limiting plate 16 when being connected with the first sealing gasket 20 and the second sealing gasket 21 is increased.

[0033] The working principle and use process of the utility model are as follows: when the two pipelines 1 are connected and gas leaks, the natural gas gas enters between the upper protective shell 2 and the lower protective shell 4, the alarm 6 senses the natural gas in the upper protective shell 2, and then alarms, when the protective shell 17 needs to be disassembled, the protective shell 17 is pulled upwards, so that the bottom thereof is separated from the mounting groove 22, and the limiting rod 23 is separated from the limiting hole 24, when the alarm 6 needs to be disassembled, the screw rod 8 on the two sides is rotated, the first moving block 9 is driven to move outward by the screw rod 8, the second limiting block 12 is driven to move by the first moving block 9, so that the second limiting block 12 is separated from the second limiting groove 13, the pull block is pulled outward, the second moving block 15 is driven to move outward by the pull block, the limiting plate 16 is driven to move to the two sides by the second moving block 15, at this time, the upper protective shell 2 can be pulled upwards, so that the bottom thereof is separated from the sealing block 25, and the first connecting block 3 and the first sealing gasket 20 are driven to move, the first limiting groove 10 in the bottom of the first connecting block 3 is separated from the first limiting block 11, and the bottom of the first sealing gasket 20 is separated from the second sealing gasket 21.

[0034] It should be noted that, in the present document, the terms such as first and second, etc., are merely used to differentiate one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A natural gas long distance pipeline leak test alarm comprising a pipeline (1) characterized by: The top of the pipeline (1) is movably connected with an upper protective shell (2), the left and right sides of the upper protective shell (2) are fixedly connected with first connecting blocks (3), the bottom of the pipeline (1) is movably connected with a lower protective shell (4), the upper protective shell (2) is movably connected with the lower protective shell (4), the left and right sides of the lower protective shell (4) are fixedly connected with second connecting blocks (5), the top of the upper protective shell (2) is fixedly connected with an alarm (6), the bottom of the first connecting block (3) is provided with a first groove (7), the inner wall of the first groove (7) is rotatably connected with a screw rod (8), the outer side of the screw rod (8) is threadedly connected with a first moving block (9), the first moving block (9) is slidably connected with the first groove (7), the bottom of the first connecting block (3) is provided with a first limiting groove (10), the top of the second connecting block (5) is fixedly connected with a first limiting block (11), the first limiting block (11) is movably connected with the first limiting groove (10), one side of the first moving block (9) is fixedly connected with a second limiting block (12), the second limiting block (12) is slidably connected with the first connecting block (3), the inside of the first limiting block (11) is provided with a second limiting groove (13), the second limiting block (12) is movably connected with the second limiting groove (13), the bottom of the second connecting block (5) is provided with a second groove (14), the inside of the second groove (14) is slidably connected with a second moving block (15), the front and back sides of the second moving block (15) are fixedly connected with limiting plates (16), the limiting plates (16) are slidably connected with the second connecting block (5).

2. A natural gas pipeline leak test alarm according to claim 1, wherein: The top of the upper protective shell (2) is movably connected with a protective shell (17), the left and right sides of the protective shell (17) are communicated with ventilation pipes (18), the left and right sides of the protective shell (17) are provided with ventilation openings (19), the inside of the ventilation pipe (18) and the ventilation opening (19) are fixedly connected with filter screens.

3. A natural gas pipeline leak test alarm according to claim 1, wherein: The front and back sides of the upper protective shell (2) are fixedly connected with first sealing pads (20), the front and back sides of the lower protective shell (4) are fixedly connected with second sealing pads (21), the first sealing pad (20) is attached to the second sealing pad (21), the inside of the limiting plate (16) is provided with a clamping groove, the first sealing pad (20) and the second sealing pad (21) are movably connected with the clamping groove, the inside of the first sealing pad (20) and the second sealing pad (21) is attached to the pipeline (1).

4. A natural gas pipeline leak test alarm according to claim 2, wherein: The top of the upper protective shell (2) is provided with a mounting groove (22), the mounting groove (22) is movably connected with the protective shell (17), the bottom of the protective shell (17) is fixedly connected with a limiting rod (23), the surface of the upper protective shell (2) is provided with a limiting hole (24), the limiting rod (23) is slidably connected with the limiting hole (24).

5. A natural gas pipeline leak test alarm according to claim 1, wherein: The top of the lower protective shell (4) is fixedly connected with a sealing block (25), the surface of the sealing block (25) is attached to the upper protective shell (2).

6. A natural gas pipeline leak test alarm according to claim 1, wherein: The inner wall of the second groove (14) is fixedly connected with a spring (26), one end of the spring (26) is fixedly connected with a second moving block (15), the bottom of the second moving block (15) is fixedly connected with a pull block, and the pull block is in sliding connection with the second groove (14).

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