Natural gas leakage alarm mechanism

Abstract

The utility model discloses a natural gas leakage alarm mechanism in the technical field of natural gas leakage alarm, which comprises a first sealing shell and a second sealing shell, a clamping groove is formed in the left side wall of a second fixing shell, insertion holes are formed in the front side wall and the rear side wall in the clamping groove, and first fixing plates are arranged on the upper side wall and the lower side wall of the second sealing shell. A clamping groove is formed in the right side wall of the first fixing plate, a clamping plate matched with the clamping groove is arranged on the right side wall of the first fixing plate, a cavity is formed in the clamping plate, and a fixing assembly is arranged in the cavity. When natural gas at the joint leaks, the concentration of the natural gas can be sensed under the action of the natural gas sensor, when the concentration reaches a certain value, the natural gas sensor transmits a signal to the controller, and the controller controls the alarm to give an alarm, so that the leakage of the natural gas can be alarmed.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas leakage alarm, and specifically relates to a natural gas leakage alarm mechanism. Background Technique

[0002] A natural gas pipeline refers to a pipeline that transports natural gas, including associated gas produced in oil fields, from the production site or treatment plant to the urban gas distribution center or industrial enterprise users. It is also called a gas transmission pipeline. The gas transmission pipelines are connected to each other through flange plates. However, the connection part of the flange plates may leak after long-term use. The existing natural gas leakage cannot be predicted and warned in time, so the natural gas will leak into the air, causing environmental pollution. Meeting a fire source may cause an explosion, and the safety performance is poor. Therefore, we propose a natural gas leakage alarm mechanism. Content of the Utility Model

[0003] The purpose of the utility model is to provide a natural gas leakage alarm mechanism to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A natural gas leakage alarm mechanism includes a first sealing shell and a second sealing shell. Natural gas sensors are provided on the mutually remote side walls inside the first sealing shell and the second sealing shell. A controller is provided on the top of the first sealing shell, and an alarm is provided on the top of the second sealing shell. Second fixing plates are provided on the upper and lower side walls of the first sealing shell. Slots are opened on the left side walls of the second fixing plates, and insertion holes are opened on the front and rear side walls inside the slots. First fixing plates are provided on the upper and lower side walls of the second sealing shell. A clamping plate matching the slot is provided on the right side wall of the first fixing plate. A cavity is provided inside the clamping plate, and a fixing component is provided inside the cavity.

[0005] Further, the fixing component includes a bidirectional lead screw provided inside the cavity. Plug rods are sleeved on the left and right outer walls of the bidirectional lead screw. One ends of the two plug rods respectively penetrate through the left and right side walls inside the cavity and match the insertion holes. A driven bevel gear is sleeved and installed on the outer wall of the bidirectional lead screw. A driving bevel gear meshing with the driven bevel gear is provided inside the cavity. A rotating shaft is provided on the top of the driving bevel gear. One end of the rotating shaft penetrates through the top inside the cavity and is connected to an adjusting knob provided outside.

[0006] Further, two guiding grooves are opened on the bottom inside the cavity. Guiding blocks matching the guiding grooves are provided on the outer side walls of the two plug rods.

[0007] Further, mounting plates are sleeved on the left and right outer walls of the bidirectional lead screw. The upper and lower side walls of the two mounting plates are respectively connected to the upper and lower side walls inside the cavity.

[0008] Further, an opening is opened on the left side wall of the second fixing plate, and the rotating shaft matches the opening.

[0009] Furthermore, sealing layers are provided on the opposite side walls of the first sealing shell and the second sealing shell.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: The first sealing shell and the second sealing shell of the present utility model are fixed at the flange connection of the natural gas pipeline. When natural gas leaks at the connection, the natural gas concentration can be sensed under the action of the natural gas sensor. When the concentration reaches a certain level, the natural gas sensor transmits a signal to the controller, and the controller controls the alarm to give an alarm, thereby being able to alarm the leakage of natural gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural view of the present utility model;

[0012] Figure 2 is a left view of the internal structure of the card slot of the present utility model;

[0013] Figure 3 is a right view of the internal structure of the cavity of the present utility model.

[0014] In the figure: 1, first sealing shell; 2, controller; 3, sealing layer; 4, natural gas sensor; 5, second sealing shell; 6, alarm; 7, fixing component; 70, insertion rod; 71, mounting plate; 72, adjusting knob; 73, rotating shaft; 74, bidirectional lead screw; 75, driving bevel gear; 76, driven bevel gear; 77, guiding groove; 78, guiding block; 8, first fixing plate; 9, clamping plate; 10, second fixing plate; 11, jack; 12, opening; 13, card slot; 14, cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0016] Please refer to Figures 1-3, the utility model provides a technical solution: a natural gas leakage alarm mechanism, including a first sealing shell 1 and a second sealing shell 5. Sealing layers 3 are provided on the opposite side walls of the first sealing shell 1 and the second sealing shell 5. Under the action of the sealing layers 3, the sealing performance between the first sealing shell 1 and the second sealing shell 5 and the outer wall of the natural gas pipeline can be improved. Natural gas sensors 4 are provided on the side walls far away from each other inside the first sealing shell 1 and the second sealing shell 5. A controller 2 is provided on the top of the first sealing shell 1, and an alarm 6 is provided on the top of the second sealing shell 5. Second fixing plates 10 are provided on the upper and lower side walls of the first sealing shell 1. A clamping groove 13 is formed on the left side wall of the second fixing plate 10. Insertion holes 11 are formed on the front and rear side walls inside the clamping groove 13. First fixing plates 8 are provided on the upper and lower side walls of the second sealing shell 5. A clamping plate 9 matching the clamping groove 13 is provided on the right side wall of the first fixing plate 8. A cavity 14 is formed inside the clamping plate 9, and a fixing component 7 is provided inside the cavity 14.

[0017] Please refer to Figure 3 , the fixing component 7 includes a bidirectional lead screw 74 provided inside the cavity 14. Mounting plates 71 are sleeved on the left and right outer walls of the bidirectional lead screw 74. The upper and lower side walls of the two groups of mounting plates 71 are respectively connected to the upper and lower side walls inside the cavity 14. Under the action of the mounting plates 71, the bidirectional lead screw 74 rotates more stably. Insertion rods 70 are sleeved on the left and right outer walls of the bidirectional lead screw 74. One ends of the two groups of insertion rods 70 respectively penetrate the left and right side walls inside the cavity 14 and match the insertion holes 11. Two guiding grooves 77 are formed at the bottom inside the cavity 14. Guide blocks 78 matching the guiding grooves 77 are provided on the outer side walls of the two groups of insertion rods 70. Under the action of the guiding grooves 77 and the guide blocks 78, the two groups of insertion rods 70 move away from each other on the outer wall of the bidirectional lead screw 74. A driven bevel gear 76 is sleeved and installed on the outer wall of the bidirectional lead screw 74. A driving bevel gear 75 meshing with the driven bevel gear 76 is provided inside the cavity 14. A rotating shaft 73 is provided on the top of the driving bevel gear 75. One end of the rotating shaft 73 penetrates the top inside the cavity 14 and is connected to an adjusting knob 72 provided outside. An opening 12 is formed on the left side wall of the second fixing plate 10, and the rotating shaft 73 matches the opening 12.

[0018] Working principle: Clamp the first sealing shell 1 and the second sealing shell 5 at the connection of the natural gas pipeline. The clamping plate 9 is clamped into the clamping groove 13. The staff rotates the adjusting knob 72 to drive the rotating shaft 73 to rotate. The rotating shaft 73 drives the driving bevel gear 75 to rotate. The driving bevel gear 75 drives the driven bevel gear 76 to rotate. The driven bevel gear 76 drives the bidirectional lead screw 74 to rotate. Under the action of the guiding grooves 77 and the guide blocks 78, the two groups of insertion rods 70 move away from each other on the outer wall of the bidirectional lead screw 74. The insertion rods 70 move into the insertion holes 11 to complete the fixation of the first sealing shell 1 and the second sealing shell 5. Under the action of the sealing layers 3, the sealing performance between the first sealing shell 1 and the second sealing shell 5 and the outer wall of the natural gas pipeline can be improved.

[0019] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A natural gas leakage alarm mechanism, comprising a first sealed shell (1) and a second sealed shell (5), characterized in that: A natural gas sensor (4) is provided on the side walls away from each other in the first sealed shell (1) and the second sealed shell (5); a controller (2) is provided on the top of the first sealed shell (1); an alarm (6) is provided on the top of the second sealed shell (5); a second fixing plate (10) is provided on the upper and lower side walls of the first sealed shell (1); a card slot (13) is provided on the left side wall of the second fixing plate (10); and a plug hole (11) is provided on the front and rear side walls of the card slot (13); a first fixing plate (8) is provided on the upper and lower side walls of the second sealed shell (5); a card plate (9) matching the card slot (13) is provided on the right side wall of the first fixing plate (8); a cavity (14) is provided in the card plate (9); and a fixing component (7) is provided in the cavity (14).

2. The natural gas leakage alarm mechanism according to claim 1, characterized in that: The fixing assembly (7) comprises a bidirectional screw rod (74) arranged in the cavity (14), the left and right outer walls of the bidirectional screw rod (74) are sleeved with plug rods (70), one end of two groups of the plug rods (70) respectively penetrate the left and right side walls of the cavity (14) and match the insertion hole (11), the outer wall of the bidirectional screw rod (74) is sleeved with a driven bevel gear (76), the cavity (14) is provided with an active bevel gear (75) meshing with the driven bevel gear (76), the top of the active bevel gear (75) is provided with a rotating shaft (73), one end of the rotating shaft (73) penetrates the top of the cavity (14) and is connected to an adjusting knob (72) arranged outside.

3. The natural gas leakage alarm mechanism according to claim 2, characterized in that: Two groups of guide grooves (77) are provided at the bottom of the cavity (14), and guide blocks (78) matching the guide grooves (77) are provided on the outer side walls of the two groups of insertion rods (70).

4. The natural gas leakage alarm mechanism according to claim 2, characterized in that: The left and right outer walls of the bidirectional screw rod (74) are sleeved with mounting plates (71), and the upper and lower side walls of the two sets of mounting plates (71) are respectively connected to the upper and lower side walls in the cavity (14).

5. The natural gas leakage alarm mechanism according to claim 2, characterized in that: The left side wall of the second fixing plate (10) is provided with an opening (12), and the rotating shaft (73) matches the opening (12).

6. The natural gas leakage alarm mechanism according to claim 1, characterized in that: The opposite side walls of the first sealing shell (1) and the second sealing shell (5) are both provided with sealing layers (3).

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