Natural gas pipeline leakage detection device

Abstract

The utility model relates to the technical field of leakage detection, and discloses a natural gas pipeline leakage detection device which comprises a first connecting pipe, a second connecting pipe is arranged on the side edge of the first connecting pipe, and the second connecting pipe is connected with the first connecting pipe through an arranged pipeline connector. A leakage detection assembly is arranged on the outer side of the pipeline connector at the connecting position of the first connecting pipe and the second connecting pipe, and an upper sealing shell and a lower sealing shell in the leakage detection assembly are matched. The pushing plate pushes a trigger push head at the bottom of a trigger push rod to abut against a trigger switch through a first abutting rod, so that an alarm gives an alarm after being triggered to prompt a user to know the problem of natural gas leakage at the pipeline joint, the device is simple in structure, the leakage condition at the pipeline joint can be effectively detected, and the practicability is high. And the use of a user is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage detection, in particular to a natural gas pipeline leakage detection device. Background Art

[0002] Natural gas refers to a naturally occurring flammable gas and is a fossil fuel. Using natural gas as an energy source can reduce the use of coal and oil, thereby improving environmental pollution. Currently, natural gas is primarily transported via pipelines, which can be prone to leaks. For example, leaks can occur at the joints of pipelines due to poor construction quality and vibration. To detect leaks in natural gas pipelines, detection devices are typically used to provide alarms.

[0003] The Chinese patent publication number is CN 208268792 U, which discloses a natural gas pipeline leakage detection device, whose structure includes an outer shell, a protective shell, an alarm, a prompting device, a connecting ring, an electric wire, a connecting plate, a bolt, a connecting block, a pipeline, a connecting pipe, and a second connecting pipe. The top of the outer shell fits with the bottom of the protective shell, the protective shell and the alarm are nested, and the alarm is installed above the outer shell. The utility model is a natural gas pipeline leakage detection device, which is provided with a prompting device on its structure. The receiver receives the detection signal, energizes its processor, and thus energizes its iron block to generate magnetic force, adsorbs the upper armature to drive the fixed plate downward along the slider, thereby touching the seesaw, causing the seesaw to drive the contact upward, so that the contact and the contact point touch and energize, so that the converter converts the signal, which is then sent by the wireless chip, so that the natural gas leak can be dealt with in a timely manner.

[0004] The natural gas detection device in the above patent still has certain shortcomings. Most of the existing natural gas pipeline leakage detection devices are connected to the pipeline and use the detector to measure and control the natural gas flow rate in the pipeline to determine whether the natural gas pipeline is leaking. This method is difficult to accurately detect the connection between the two pipelines, has certain defects in use, and is difficult to meet the user's usage needs. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a natural gas pipeline leakage detection device, which solves the problem that most existing natural gas pipeline leakage detection devices are connected to the pipeline and use the detector to measure and control the natural gas flow rate in the pipeline to determine whether the natural gas pipeline has leaks. This method is difficult to accurately detect the connection between the two pipelines, has certain defects in use, and is difficult to meet the user's usage needs.

[0006] The utility model provides the following technical solution: a natural gas pipeline leakage detection device, comprising a first connecting pipe, a second connecting pipe provided on the side of the first connecting pipe, the second connecting pipe being connected to the first connecting pipe via a pipe joint, and a leakage detection component being provided on the outer side of the pipe joint;

[0007] The leakage detection assembly includes an upper sealing shell clamped on the upper side of the pipe joint and a lower sealing shell clamped on the lower side of the pipe joint. The upper sealing shell and the lower sealing shell are clamped on the outer side of the pipe joint and tightly wrapped. The top wall of the upper sealing shell is provided with an air intake groove, and the upper part of the air intake groove is provided with a push inner cavity. The push inner cavity and the air intake groove are connected through an air intake channel. An air bag is provided in the push inner cavity, and the inlet port of the air bag is bonded and connected to the air intake channel. A push plate is slidingly provided in the push cavity, and a first resistance rod is vertically provided on the top of the push plate, and the top of the first resistance rod passes through the top of the upper sealing shell, and a top resistance plate is provided on the top of the first resistance rod, and a limit frame is provided on the outside of the top resistance plate, and an alarm is provided on the top of the limit frame, and a trigger switch is provided in the middle of the bottom end of the alarm, and a trigger push rod is provided on the top of the top resistance plate, and the trigger push rod passes through the middle of the limit frame, and a trigger push head is provided on the top of the trigger push rod.

[0008] Preferred technical solution 1: Two groups of first connection blocks are symmetrically arranged on the outer side of the upper sealed shell, and two groups of second connection blocks are symmetrically arranged on the outer side of the lower sealed shell.

[0009] Preferred technical solution 2: A fastening bolt is inserted through the first connecting block and the second connecting block, and a fastening nut is sleeved on the end of the fastening bolt.

[0010] Preferred technical solution three: a sealing gasket is provided at the junction of the upper sealing shell and the lower sealing shell.

[0011] This solution enables the upper sealing shell and the lower sealing shell to better seal the outer side of the pipe joint, forming a tightly closed space.

[0012] Preferred technical solution four: the air intake groove is in the shape of an inverted funnel.

[0013] This solution can enable the natural gas leaking into the inner cavities of the upper sealing shell and the lower sealing shell to better enter the air intake channel connected to the top of the air intake groove.

[0014] Preferred technical solution five: Both sides of the alarm are fixedly connected to the top of the upper sealing shell through a fixed plate.

[0015] This solution can make it more stable for the alarm to be arranged on the top of the upper sealed shell.

[0016] Compared with the existing technology, the present invention provides a natural gas pipeline leakage detection device with the following beneficial effects:

[0017] (1) The utility model provides a leakage detection assembly on the outside of the pipe joint where the first connecting pipe and the second connecting pipe are connected, wherein the upper sealing shell and the lower sealing shell in the leakage detection assembly cooperate to wrap and seal the outside of the pipe joint. When natural gas leaks at the pipe joint, the leaked natural gas will enter the airbag, causing the airbag to expand after entering the natural gas, thereby pushing the push plate to move upward. The push plate pushes the trigger push head at the bottom of the trigger push rod to contact the trigger switch through the first resistance rod, so that the alarm is triggered and the alarm sounds, thereby prompting the user to know that there is a natural gas leakage problem at the pipe joint. The device has a simple structure and can effectively detect the leakage at the pipe joint, which is more convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 Schematic diagram of the structural cross section of the leakage detection component;

[0020] Figure 3 For the utility model Figure 2 A magnified view of the structure of the middle air intake groove;

[0021] Figure 4 For the utility model Figure 2 An enlarged view of the structure of the first connecting block.

[0022] In the figure: 1, first connecting pipe; 2, second connecting pipe; 3, leakage detection component; 4, pipe joint;

[0023] 301. Upper sealing shell; 302. Lower sealing shell; 303. Air inlet groove; 304. Push inner cavity; 305. Air inlet channel; 306. Airbag; 307. Push plate; 308. First resistance rod; 309. Top resistance plate; 310. Limiting frame; 311. Alarm; 312. Trigger switch; 313. Trigger push rod; 314. Trigger push head; 315. First connecting block; 316. Second connecting block; 317. Fastening bolt; 318. Fastening nut. DETAILED DESCRIPTION

[0024] See also Figure 1-4 ,

[0025] Embodiment 1: A natural gas pipeline leakage detection device includes a first connecting pipe 1, a second connecting pipe 2 is provided on the side of the first connecting pipe 1, the second connecting pipe 2 is connected to the first connecting pipe 1 through a pipe joint 4, and a leakage detection component 3 is provided on the outside of the pipe joint 4.

[0026] The leakage detection assembly 3 includes an upper sealing shell 301 clamped on the upper side of the pipe joint 4 and a lower sealing shell 302 clamped on the lower side of the pipe joint 4. The upper sealing shell 301 and the lower sealing shell 302 are clamped on the outside of the pipe joint 4 and are tightly wrapped. The top wall of the upper sealing shell 301 is provided with an air inlet groove 303, and the upper part of the air inlet groove 303 is provided with a push inner cavity 304. The push inner cavity 304 is connected to the air inlet groove 303 through an air inlet channel 305. An air bag 306 is provided in the push inner cavity 304, and the entrance of the air bag 306 is bonded to the air inlet channel 305. A push plate 307 is slidably provided in the push inner cavity 304, and a first resistance rod 308 is vertically provided at the top of the push plate 307. The top of the first resistance rod 308 passes through the top of the upper sealing shell 301, and the top of the first resistance rod 308 is provided with a top resistance plate 309.

[0027] A limit frame 310 is set on the outside of the top contact plate 309, and an alarm 311 is set on the top of the limit frame 310. A trigger switch 312 is set in the middle of the bottom end of the alarm 311, and a trigger push rod 313 is set at the top of the top contact plate 309. The trigger push rod 313 passes through the middle of the limit frame 310, and a trigger push head 314 is set at the top of the trigger push rod 313. Two groups of first connecting blocks 315 are symmetrically set on the outside of the upper sealing shell 301, and two groups of second connecting blocks 316 are symmetrically set on the outside of the lower sealing shell 302. A fastening bolt 317 is inserted through the first connecting block 315 and the second connecting block 316, and a fastening nut 318 is sleeved on the end of the fastening bolt 317.

[0028] Embodiment 2: The difference between this embodiment and embodiment 1 is that a sealing gasket is provided at the junction of the upper sealing shell 301 and the lower sealing shell 302 .

[0029] The upper sealing shell 301 and the lower sealing shell 302 can better seal the outside of the pipe joint 4 to form a tightly closed space.

[0030] Embodiment 3: The difference between this embodiment and embodiment 1 is that the air inlet groove 303 is in the shape of an inverted funnel.

[0031] The natural gas leaked into the inner cavity of the upper sealed shell 301 and the lower sealed shell 302 can better enter the air intake channel 305 connected to the top of the air intake groove 303 .

[0032] Embodiment 4: The difference between this embodiment and embodiment 1 is that, the two sides of the alarm 311 are fixedly connected to the top of the upper sealing shell 301 through the provided fixing plates.

[0033] This makes it more stable for the alarm 311 to be arranged on the top of the upper sealed shell 301 .

[0034] In this embodiment, since most existing natural gas pipeline leakage detection devices are connected to the pipeline and use the detector to measure and control the natural gas flow rate in the pipeline to determine whether the natural gas pipeline is leaking, this method is difficult to accurately detect the connection between the two pipelines, has certain defects in use, and is difficult to meet the user's usage needs.

[0035] In summary, in a specific implementation, when the user needs to perform a leak detection on the pipe joint 4 provided at the connection between the first connecting pipe 1 and the second connecting pipe 2, the user first needs to clamp the upper sealing shell 301 and the lower sealing shell 302 on both sides of the pipe joint 4 to seal it, and then firmly fix the upper sealing shell 301 and the lower sealing shell 302 by inserting the fastening bolts 317 on the first connecting block 315 and the second connecting block 316.

[0036] When natural gas leaks from the pipe joint 4 provided at the connection between the first connecting pipe 1 and the second connecting pipe 2, the leaked natural gas can enter the enclosed space of the upper sealed shell 301 and the lower sealed shell 302, and the natural gas enters the air intake channel 305 through the air intake groove 303, and enters the air bag 306 through the air intake channel 305, so that the air bag 306 is expanded by the gradually entering natural gas, and pushes against the push plate 307 provided in the push inner cavity 304.

[0037] The push plate 307 can push the first resistance rod 308 to move upward, and the top resistance plate 309 set at the end of the first resistance rod 308 can push the trigger push head 314 through the trigger push rod 313, so that the trigger push head 314 can resist and trigger the trigger switch 312 set at the bottom of the alarm 311, causing the alarm 311 to sound an alarm, and then be used to detect whether a natural gas leak occurs at the pipe joint 4, and can more accurately detect whether a natural gas leak occurs at the pipe joint 4 where the first connecting pipe 1 and the second connecting pipe 2 are connected.

Claims

1. A natural gas pipeline leakage detection device, comprising a first connecting pipe (1), characterized in that: A second connecting pipe (2) is provided on the side of the first connecting pipe (1); the second connecting pipe (2) is connected to the first connecting pipe (1) via a pipe joint (4); a leakage detection component (3) is provided on the outside of the pipe joint (4); The leakage detection assembly (3) comprises an upper sealing shell (301) clamped on the upper side of the pipe joint (4) and a lower sealing shell (302) clamped on the lower side of the pipe joint (4); the upper sealing shell (301) and the lower sealing shell (302) are clamped on the outer side of the pipe joint (4) and are tightly wrapped; an air inlet groove (303) is provided on the top wall of the upper sealing shell (301); a push inner cavity (304) is provided on the upper part of the air inlet groove (303); the push inner cavity (304) and the air inlet groove (303) are connected via an air inlet channel (305); an air bag (306) is provided in the push inner cavity (304); an inlet port of the air bag (306) is bonded to the air inlet channel (305); the push inner cavity (304) is provided with a plurality of air bags; and the push inner cavity (304) is provided with a plurality of air bags. 04) is provided with a push plate (307) for sliding inside, a first resistance rod (308) is vertically provided at the top of the push plate (307), the top of the first resistance rod (308) passes through the top of the upper sealing shell (301), a top resistance plate (309) is provided at the top of the first resistance rod (308), a limit frame (310) is provided on the outside of the top resistance plate (309), an alarm (311) is provided at the top of the limit frame (310), a trigger switch (312) is provided at the middle of the bottom end of the alarm (311), a trigger push rod (313) is provided at the top of the top resistance plate (309), the trigger push rod (313) passes through the middle of the limit frame (310), and a trigger push head (314) is provided at the top of the trigger push rod (313).

2. A natural gas pipeline leakage detection device according to claim 1, characterized in that: Two groups of first connection blocks (315) are symmetrically arranged on the outer side of the upper sealed shell (301), and two groups of second connection blocks (316) are symmetrically arranged on the outer side of the lower sealed shell (302).

3. A natural gas pipeline leakage detection device according to claim 2, characterized in that: A fastening bolt (317) is inserted through the first connecting block (315) and the second connecting block (316), and a fastening nut (318) is sleeved on the end of the fastening bolt (317).

4. A natural gas pipeline leakage detection device according to claim 3, characterized in that: A sealing gasket is provided at the joint between the upper sealing shell (301) and the lower sealing shell (302).

5. A natural gas pipeline leakage detection device according to claim 4, characterized in that: The air inlet groove (303) is in the shape of an inverted funnel.

6. A natural gas pipeline leakage detection device according to claim 5, characterized in that: Both sides of the alarm (311) are fixedly connected to the top of the upper sealing shell (301) via fixed plates.

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