Old gas pipeline interface leakage detection device

Abstract

The utility model discloses an old gas pipeline interface leakage detection device, which belongs to the technical field of gas pipeline detection and comprises a track seat, an adjusting mechanism is slidably arranged in the inner wall of the track seat, the bottom of the adjusting mechanism is connected with a fastening mechanism, and a detector is fixed in the middle of the top of the track seat. A sampling mechanism is mounted in the inner cavity of the detector; according to the utility model, the gas leakage detection device clamped at the pipeline interface is designed, and the sampling pump is matched with the tee joint, the sampling main pipe, the sampling branch pipes, the air inlet holes and other components, so that the air in a plurality of areas outside the interface can be sampled and analyzed; therefore, the detection accuracy of gas leakage at the joint of the old gas pipeline can be greatly improved, the alarm efficiency is improved, meanwhile, the device can be adaptively installed on pipelines with various sizes and joint valves through the fastening mechanism, and the flexibility is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas pipeline detection technical field especially, it is an old gas pipeline interface leak detection device. BACKGROUND

[0002] Gas pipeline leakage detection is one of important work of daily maintenance and management of gas transmission and distribution system, especially the detection of old gas pipeline, with the increase of gas pipeline length and service life year by year, the pipeline aging problem highlights, and it will increase the use risk of gas pipeline, and the aging pipeline with safety hidden danger is in urgent need of updating and reconstruction.

[0003] The commonly used gas leakage detection methods include odor detection method, gas alarm detection method and the like, but the above-mentioned methods can only detect the gas leakage vaguely, and cannot quickly and accurately find the leakage position, which is not conducive to the quick maintenance of the staff, especially when the joints of the old gas pipeline leak gas, because there are many valve parts at the joint, the unilateral leaked gas cannot enter the alarm in time, and thus the quick alarm cannot be carried out to avoid the danger.

[0004] To solve the above problems, an old gas pipeline interface leak detection device is provided. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide an old gas pipeline interface leak detection device, which solves the problems mentioned in the background technology.

[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0007] An old gas pipeline interface leak detection device, comprising a track seat, an adjusting mechanism is slidably arranged in the inner wall of the track seat, a fastening mechanism is connected to the bottom of the adjusting mechanism, a detector is fixed to the top middle of the track seat, and a sampling mechanism is installed in the inner cavity of the detector.

[0008] The adjusting mechanism comprises a sliding block slidably arranged in the inner wall of the track seat, and an extension block is vertically slidably arranged in the inner wall of the sliding block.

[0009] The fastening mechanism comprises a fastening belt detachably connected to the bottom of the extension block, the fastening belt is a hollow structure, and an air inlet hole is formed in one side of the outer wall of the fastening belt and communicates with the hollow cavity.

[0010] The sampling mechanism comprises a sampling sub-pipe insertedly and communicatively connected to the other side of the outer wall of the fastening belt.

[0011] Further, a fastener is arranged on the contact surface of the extension block and the sliding block, the fastener is composed of a fastener column on the extension block and a fastener hole on the sliding block, and the fastener column is an elastic structure.

[0012] Further, the fastening belt is a two-segment structure, one segment of which is provided with a ratchet lock on the outer wall, and the other segment is provided with a lock tooth on the outer wall.

[0013] Further, the end of the sampling branch pipe is detachably connected to the inner cavity of the fastening belt, and the sampling branch pipe is sealed and communicated with a sampling main pipe at the end away from the fastening belt.

[0014] Further, a three-way pipe is fixed inside the detector, and two symmetrical air inlet ends of the three-way pipe are connected with the sampling main pipe.

[0015] Further, a sampling pump is connected to the air outlet end of the three-way pipe, and a detection circuit board is installed above the sampling pump.

[0016] Further, the detector is also provided with an alarm on the top.

[0017] The beneficial technical effects of the utility model are as follows:

[0018] The gas leakage detection device is designed to be clamped at the pipeline interface, and the air in multiple areas outside the interface can be sampled and analyzed through the sampling pump, the three-way pipe, the sampling main pipe, the sampling branch pipe, and the air inlet hole, which can greatly improve the detection accuracy of gas leakage at the interface of the old gas pipeline, improve the alarm efficiency, and the device can be installed on pipelines of various sizes and interface valves through the fastening mechanism, and has strong flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of a preferred embodiment of the old gas pipeline interface leakage detection device according to the utility model.

[0020] Figure 2 It is a rear view structural schematic diagram of a preferred embodiment of the old gas pipeline interface leakage detection device according to the utility model.

[0021] Figure 3 It is a structural schematic diagram of a preferred embodiment of the old gas pipeline interface leakage detection device according to the utility model.

[0022] Figure 4 It is a structural schematic diagram of a preferred embodiment of the old gas pipeline interface leakage detection device according to the utility model. Figure 3 It is an enlarged view of A in the above figure.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1. Track base; 2. Fastening mechanism; 201. Fastening belt; 202. Ratchet lock; 203. Locking teeth; 204. Air inlet; 3. Detector; 4. Alarm; 5. Adjustment mechanism; 501. Slider; 502. Telescopic block; 502a. Fastener; 6. Sampling mechanism; 601. Sampling pump; 602. T-junction; 603. Main sampling pipe; 604. Branch sampling pipe; 7. Detection circuit board. Detailed Implementation

[0025] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0026] like Figures 1-4 As shown, this embodiment provides a leak detection device for an old gas pipeline interface, including a track base 1, an adjustment mechanism 5 slidably disposed in the inner wall of the track base 1, a fastening mechanism 2 connected to the bottom of the adjustment mechanism 5, a detector 3 fixed in the middle of the top of the track base 1, and a sampling mechanism 6 installed in the inner cavity of the detector 3; the adjustment mechanism 5 includes a slider 501 slidably disposed with the inner wall of the track base 1, and a telescopic block 502 slidably disposed vertically in the inner wall of the slider 501; the fastening mechanism 2 includes a fastening band 201 detachably connected to the bottom of the telescopic block 502, the fastening band 201 having a hollow cavity structure inside, and an air inlet 204 communicating with the cavity being opened on one side of the outer wall of the fastening band 201; the sampling mechanism 6 includes a sampling branch pipe 604 inserted and communicating with the other side of the outer wall of the fastening band 201.

[0027] In the above structure, the track seat 1 is made of aluminum alloy, which is lightweight and easy to install. The sliding design of the telescopic block 502 and the slider 501 is to meet the needs of different pipe interfaces and pipe sizes, so that the track seat 1 can be suspended and fixed on the outside without interfering with the position of the pipe.

[0028] A fastener 502a is provided on the contact surface between the telescopic block 502 and the slider 501. The fastener 502a consists of a fastening post located on the telescopic block 502 and a fastening hole located on the slider 501. The fastening post is an elastic structure.

[0029] The fastening strap 201 has a split two-section structure. One section has a ratchet lock 202 fixed on its outer wall, and the other section has a locking tooth 203 formed on its outer wall to engage with the ratchet lock 202 for locking. The ratchet lock 202 and the locking tooth 203 have the same structure and principle as common belt buckles and can be easily adjusted.

[0030] The end of the sampling branch pipe 604 is detachably separated from the inner cavity of the fastening belt 201, and the end of the sampling branch pipe 604 away from the fastening belt 201 is sealingly communicated with a sampling main pipe 603, the sampling main pipe 603 is provided as one, and the sampling branch pipe 604 is provided as two, so that the air inlet holes 204 on the outer walls of the two fastening belts 201 can surround the periphery of the pipeline to inhale and sample the air.

[0031] The three-way pipe 602 is fixed in the detector 3, the two symmetrical air inlet ends of the three-way pipe 602 are connected with the sampling main pipe 603, and the other air inlet end of the three-way pipe 602 penetrates through the back wall of the detector 3 and is communicated with the outside, so that the gas around the pipeline interface can be sampled, and the gas around the pipeline interface can be sampled, and the gas around the pipeline interface can be sampled, and the gas around the pipeline interface can be sampled.

[0032] The air outlet end of the three-way pipe 602 is connected with the sampling pump 601, the detection circuit board 7 is installed above the sampling pump 601, the detection circuit board 7 is fixed in the detector 3 by screws, the detection circuit board 7 is provided with a sensor for detecting gas, and the alarm 4 is started by the controller to alarm when the threshold value of the leakage concentration is reached. The current leakage interface can be accurately located, which is convenient for the maintenance of the staff, and the working frequency of the sampling pump 601 is set on the detection circuit board 7, which is set to work once every 5 minutes, and the working time is 1 minute.

[0033] The detector 3 is further provided with an alarm 4 on the outer top.

[0034] The working principle of the device is that the device is connected to an external power supply when in use.

[0035] According to the size of the pipe fitting at the interface of the old gas pipeline, the position of the fastening mechanism 2 is adjusted by sliding the sliding block 501 in the track seat 1, and then the position of the telescopic block 502 in the sliding block 501 is adjusted, the vertical distance between the track seat 1 and the pipeline is adjusted, then the fastening belt 201 is buckled on the outer wall of the pipeline, and the lock tooth 203 and the ratchet lock 202 are locked, and the track seat 1 is fastened on one side of the pipeline.

[0036] The sampling pump 601 sucks the gas through the three-way pipe 602, the three-way pipe 602 inhales the gas from the sampling main pipe 603 on both sides and the back of the detector 3, so as to detect the gas around the pipeline interface, wherein the sampling main pipe 603 is connected to the inner cavity of the fastening belt 201 through the sampling branch pipe 604, the inner wall of the fastening belt 201 faces the outer wall of the interface pipe fitting, so that the leaked gas in this direction of the pipe fitting can enter the pipe fitting through the air inlet hole 204, and after the gas enters the sensor in the detection circuit board 7, the alarm 4 is notified to alarm according to the change of the voltage signal when the threshold value is reached, which can remind the user that the gas is leaking at the current interface.

[0037] The above is only further embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and conception of the present application within the disclosed range of the present application, which belongs to the protection scope of the present application.

Claims

1. A device for detecting leaks in the interface of an old gas pipeline, comprising a rail seat (1), characterized in that: The inner wall of the track seat (1) is slidably provided with an adjusting mechanism (5), the bottom of the adjusting mechanism (5) is connected with a fastening mechanism (2), the top of the track seat (1) is fixedly provided with a detector (3), and the inner cavity of the detector (3) is provided with a sampling mechanism (6). The adjusting mechanism (5) comprises a sliding block (501) slidably arranged in the inner wall of the track seat (1), and a telescopic block (502) vertically slidably arranged in the inner wall of the sliding block (501). The fastening mechanism (2) comprises a fastening belt (201) detachably connected to the bottom of the telescopic block (502), the fastening belt (201) is internally provided with a cavity structure, and a gas inlet hole (204) is formed in one side of the outer wall of the fastening belt (201) and communicates with the cavity. The sampling mechanism (6) comprises a sampling sub-pipe (604) which is insertedly connected to the other side of the outer wall of the fastening belt (201).

2. A device for detecting leaks in an interface of an old gas pipeline according to claim 1, characterized in that: The contact surface of the telescopic block (502) and the sliding block (501) is provided with a fastener (502a), and the fastener (502a) is composed of a buckle column located on the telescopic block (502) and a buckle hole located on the sliding block (501).

3. A device for detecting leaks in an interface of an old gas pipeline according to claim 2, characterized in that: The fastening belt (201) is in two separate sections, one section of the outer wall is fixed with a ratchet lock (202), and the other section of the outer wall is formed with a lock tooth (203) matched with the ratchet lock (202).

4. A device for detecting leaks in an interface of an old gas pipeline according to claim 3, characterized in that: The end of the sampling sub-pipe (604) is detachably separated from the inner cavity of the fastening belt (201), one end of the sampling sub-pipe (604) away from the fastening belt (201) is sealingly communicated with a sampling main pipe (603), the sampling main pipe (603) is provided as one, and the sampling sub-pipe (604) is provided as two.

5. A device for detecting leaks in an interface of an old gas pipeline according to claim 4, characterized in that: The inner wall of the detector (3) is fixedly provided with a three-way pipe (602), the two symmetrical gas inlet ends of the three-way pipe (602) are connected with the sampling main pipe (603) in a sleeved manner, and the other gas inlet end of the three-way pipe (602) penetrates through the back wall of the detector (3) and communicates with the outside.

6. A device for detecting leaks in an interface of an old gas pipeline according to claim 5, characterized in that: The gas outlet end of the three-way pipe (602) is provided with a sampling pump (601), a detection circuit board (7) is mounted above the sampling pump (601) in a matched manner, and the detection circuit board (7) is fixedly connected to the inner wall of the detector (3) by screws.

7. A device for detecting leaks in an interface of an old gas pipeline according to claim 6, characterized in that: The outer top of the detector (3) is further provided with an alarm (4).

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