Natural gas pipeline leakage detection equipment

Abstract

The utility model relates to the technical field of natural gas leakage detection equipment, and discloses natural gas pipeline leakage detection equipment which comprises a control box, a detection mechanism is arranged on the control box, an adjusting mechanism is arranged on the upper end face of the control box, and the detection mechanism comprises a detection ring. A temperature sensor and a vibration sensor are fixedly connected to the two sides of the upper end face of the detection ring respectively, a signal conditioning module, an analog-to-digital conversion module and a controller are fixedly arranged in the control box in a sleeved mode, and a sound-light alarm lamp is fixedly connected to the position, close to the upper portion, of the outer wall of one side of the control box. According to the natural gas pipeline leakage detection device, intelligent leakage detection can be conducted on a natural gas pipeline through the arranged detection mechanism, better accuracy and usability are achieved, the position of the detection ring can be adjusted through the arranged adjusting mechanism so that pipelines at different heights or depths can be detected and used, and better convenience is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of natural gas leak detection equipment, and in particular to a natural gas pipeline leak detection equipment. Background Technology

[0002] Natural gas pipelines are pipelines that transport natural gas (including associated gas from oil fields) from extraction sites or processing plants to urban gas distribution centers or industrial users. They are also known as gas transmission pipelines. Using natural gas pipelines to transport natural gas is the main way to transport large quantities of natural gas on land. Natural gas pipelines account for about half of the world's total pipeline length. Natural gas leaks can cause resource waste and accidents, so pipeline inspection is necessary.

[0003] Existing devices require manual review of test results, resulting in low efficiency and increasing costs. Furthermore, the fixed structure of existing testing instruments necessitates external support when testing pipes at high or low locations, making them impractical.

[0004] Therefore, those skilled in the art have provided a natural gas pipeline leak detection device to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a natural gas pipeline leak detection device. This device features an intelligent leak detection mechanism for natural gas pipelines, offering improved accuracy and usability. Furthermore, the adjustable mechanism allows for the adjustment of the detection ring's position, enabling detection of pipelines at different heights or depths, thus providing greater convenience.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A natural gas pipeline leak detection device includes a control box, on which a detection mechanism is provided, and on the upper surface of the control box an adjustment mechanism is provided.

[0008] The detection mechanism includes a detection ring, with a temperature sensor and a vibration sensor fixedly connected to both sides of the upper end face of the detection ring, respectively. A signal conditioning module, an analog-to-digital conversion module, and a controller are fixedly housed inside the control box. An audible and visual alarm light is fixedly connected to the upper part of one side of the outer wall of the control box. The temperature sensor, vibration sensor, signal conditioning module, analog-to-digital conversion module, controller, and audible and visual alarm light are electrically connected to each other.

[0009] Through the above technical solution, when the detection ring comes into contact with the pipeline, the temperature sensor and vibration sensor monitor the outer wall of the pipeline in real time. The signal conditioning module amplifies and filters the weak electrical signals output by the two sensors. The analog-to-digital conversion module converts the analog temperature and vibration signals into digital signals and sends them to the controller. The controller processes, analyzes, and judges the digital signals, and determines whether a natural gas leak has occurred based on the preset algorithm and threshold. When a natural gas leak is detected, the gas expands and absorbs heat, which causes the local temperature to drop and the gas to be ejected from the leak point in the pipeline, generating high-frequency vibration. After the controller analyzes and determines that there is a gas leak, it will promptly control the audible and visual alarm lights to be activated, thereby issuing an alarm signal. This method has better detection and intelligence, and the use of two sensors in combination can avoid the problem of false alarms caused by the influence of the external environment.

[0010] Furthermore, the adjustment mechanism includes a fixed column and an adjustment rod. The fixed column is fixedly connected to the upper end face of the control box, and the adjustment rod is fixedly connected to the detection ring. The adjustment rod is movably sleeved inside the fixed column.

[0011] The above technical solution allows for better adjustment of the detection ring by adjusting the rod within the fixed column.

[0012] Furthermore, a fixing groove is provided on the lower part of the outer wall on both sides of the adjusting rod, and a set of return springs is fixedly connected to the inner wall on both sides of the two fixing grooves. An adjusting plate is fixedly connected to the opposite end of the two set of return springs, and a locking rod is fixedly connected to the opposite side of the two adjusting plates. Multiple locking holes are provided on both sides of the fixing column, and the locking rod is locked in the locking hole.

[0013] With the above technical solution, pressing the locking rod causes the adjusting plate to move under force, which in turn pushes the reset spring assembly to compress. The locking rod retracts into the fixed groove. At this time, after moving the detection ring to the required position, the locking rod will align with the corresponding locking hole, causing the reset spring assembly to pop out naturally without restriction. The adjusting plate moves under force, which in turn pushes the locking rod to move synchronously. The locking rod is locked in the locking hole, and the adjusting rod is restricted in the fixed column. The position of the detection ring changes, allowing for detection.

[0014] Furthermore, the upper and lower end faces of the adjusting plate are fixedly connected to limit sliders, and the inner walls of the upper and lower ends of the fixing groove are provided with limit grooves, and the limit sliders are slidably disposed in the limit grooves.

[0015] The above technical solution achieves the purpose of limiting the movement of the adjustment plate by sliding the limiting slider in the limiting groove.

[0016] Furthermore, the arc length of the detection ring is a quarter of a circle;

[0017] By using the above technical solution, setting the arc length of the detection ring to a quarter circle can achieve better contact with the pipeline.

[0018] Furthermore, a power module is fixedly connected to the inner rear wall of the control box, and the power module is electrically connected to the temperature sensor, vibration sensor, signal conditioning module, analog-to-digital conversion module, controller and audible and visual alarm light.

[0019] The above technical solution, through the power module, can achieve a better power supply effect.

[0020] Furthermore, the fixing post and the adjusting rod are fitted together;

[0021] The above technical solution achieves better limiting of the adjusting rod by fitting the fixed column and the adjusting rod together.

[0022] This utility model has the following beneficial effects:

[0023] 1. This utility model proposes a natural gas pipeline leak detection device. When the detection ring contacts the pipeline, temperature and vibration sensors monitor the outer wall of the pipeline in real time. The signal conditioning module amplifies and filters the weak electrical signals output by the two sensors. The analog-to-digital conversion module converts the analog temperature and vibration signals into digital signals and sends them to the controller. The controller processes, analyzes, and judges the digital signals, and determines whether a natural gas leak has occurred based on a preset algorithm and threshold. When a natural gas leak is detected, the gas expands and absorbs heat, causing a local temperature drop, and the gas is ejected from the leak point, generating high-frequency vibration. After the controller analyzes and confirms the gas leak, it will promptly activate the audible and visual alarm lights to issue an alarm signal. This device has better detection capabilities and intelligence. Furthermore, the use of two sensors in conjunction can avoid false alarms caused by external environmental influences, resulting in better accuracy.

[0024] 2. The natural gas pipeline leak detection device proposed in this utility model allows for the adjustment of the distance between the detection ring and the control box. By pressing the locking rod, the adjusting plate moves under force, thereby compressing the return spring assembly. The locking rod retracts into the fixed groove. At this time, after moving the detection ring to the desired position, the locking rod will align with the corresponding locking hole, causing the return spring assembly to pop out naturally without restriction. The adjusting plate moves under force, thereby pushing the locking rod to move synchronously. The locking rod is locked in the locking hole, and the adjusting rod is restricted in the fixed column. The position of the detection ring changes, allowing for detection. This device can be used to detect pipelines of different heights or depths, providing greater convenience.

[0025] 3. The natural gas pipeline leak detection device proposed in this utility model can perform intelligent leak detection on natural gas pipelines through the set detection mechanism, which has better accuracy and usability. Furthermore, the set adjustment mechanism can adjust the position of the detection ring to detect pipelines at different heights or depths, which has better convenience. Attached Figure Description

[0026] Figure 1 This is an isometric view of a natural gas pipeline leak detection device proposed in this utility model;

[0027] Figure 2 This is a front sectional view of a natural gas pipeline leak detection device proposed in this utility model;

[0028] Figure 3 This is a front sectional view of the connection between the fixed column and the adjusting rod of a natural gas pipeline leak detection device proposed in this utility model;

[0029] Figure 4 for Figure 3 An enlarged schematic diagram of the structure at point A;

[0030] Figure 5 This is a schematic diagram of the working process of the detection mechanism of a natural gas pipeline leak detection device proposed in this utility model.

[0031] Legend:

[0032] 1. Control box; 2. Detection mechanism; 201. Detection ring; 202. Temperature sensor; 203. Vibration sensor; 204. Signal conditioning module; 205. Power supply module; 206. Analog-to-digital conversion module; 207. Controller; 208. Audible and visual alarm light; 3. Adjustment mechanism; 301. Fixed column; 302. Adjusting rod; 303. Fixed groove; 304. Reset spring assembly; 305. Adjusting plate; 306. Engaging rod; 307. Engaging hole; 308. Limiting slider; 309. Limiting groove. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference Figure 1 , Figure 2 and Figure 5The present invention provides a specific embodiment of a natural gas pipeline leak detection device, including a control box 1, a detection mechanism 2 on the control box 1, and an adjustment mechanism 3 on the upper surface of the control box 1.

[0035] The detection mechanism 2 includes a detection ring 201 with an arc length of one-quarter of a circle. By setting the arc length of the detection ring 201 to one-quarter of a circle, better contact with the pipeline can be achieved. Temperature sensor 202 and vibration sensor 203 are fixedly connected to the two sides of the upper end face of the detection ring 201, respectively. Signal conditioning module 204, analog-to-digital conversion module 206 and controller 207 are fixedly installed inside the control box 1. A sound and light alarm lamp 208 is fixedly connected to the upper part of one side of the outer wall of the control box 1. Temperature sensor 202, vibration sensor 203, signal conditioning module 204, analog-to-digital conversion module 206, controller 207 and sound and light alarm lamp 208 are electrically connected. Power module 205 is fixedly connected to the inner wall of the rear end of the control box 1. Power module 205 is electrically connected to temperature sensor 202, vibration sensor 203, signal conditioning module 204, analog-to-digital conversion module 206, controller 207 and sound and light alarm lamp 208. The power module 205 can achieve better power supply.

[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The adjustment mechanism 3 includes a fixed column 301 and an adjusting rod 302. The fixed column 301 is fixedly connected to the upper end face of the control box 1, and the adjusting rod 302 is fixedly connected to the detection ring 201. The adjusting rod 302 is movably sleeved inside the fixed column 301. By moving the adjusting rod 302 inside the fixed column 301, a better adjustment effect can be achieved on the detection ring 201. Fixing grooves 303 are opened on the lower part of the outer walls on both sides of the adjusting rod 302. The inner walls on both sides of the two fixing grooves 303 are... Each of the two sets of return springs 304 is fixedly connected to a return spring assembly 304. An adjusting plate 305 is fixedly connected to the opposite ends of each set of return springs 304. A locking rod 306 is fixedly connected to the opposite sides of each adjusting plate 305. Multiple locking holes 307 are provided on both sides of the fixing post 301. The locking rod 306 is engaged within the locking holes 307. Pressing the locking rod 306 causes the adjusting plate 305 to move under force, thereby compressing the return spring assembly 304. The locking rod 306 then retracts into the fixing groove 303. Inside, when the detection ring 201 is moved to the desired position, the locking rod 306 will align with the corresponding locking hole 307, causing the reset spring assembly 304 to pop out naturally without restriction. The adjusting plate 305 moves under force, which in turn pushes the locking rod 306 to move synchronously. The locking rod 306 is locked in the locking hole 307, and the adjusting rod 302 is restricted in the fixed post 301. The position of the detection ring 201 changes, and detection can be performed. The upper and lower end faces of the adjusting plate 305 are fixedly connected to the limiting slider 308. The upper and lower inner walls of the fixed groove 303 are provided with limiting grooves 309. The limiting slider 308 is slidably set in the limiting groove 309. By sliding the limiting slider 308 in the limiting groove 309, the purpose of limiting the movement of the adjusting plate 305 can be achieved. The fixed post 301 is fitted with the adjusting rod 302. By fitting the fixed post 301 and the adjusting rod 302, the limiting effect of the adjusting rod 302 can be achieved.

[0037] Working Principle: During use, the position of the detection ring 201 is adjusted according to the location of the pipeline. Pressing the locking rod 306 causes the adjusting plate 305 to move under force, compressing the return spring assembly 304. The locking rod 306 retracts into the fixing groove 303. After moving the detection ring 201 to the desired position, the locking rod 306 aligns with the corresponding locking hole 307. The return spring assembly 304 is then released naturally without restriction. The adjusting plate 305, under force, pushes the locking rod 306 to move synchronously. The locking rod 306 engages within the locking hole 307, and the adjusting rod 302 is confined within the fixing post 301. The position of the detection ring 201 is fixed and usable. The detection ring 201 is then brought into contact with the pipeline. Temperature sensor 202 and vibration sensor 203 monitor the outer wall of the pipeline in real time. Signal conditioning module 204 amplifies and filters the weak electrical signals output by the two sensors. Analog-to-digital conversion module 206 converts the analog temperature and vibration signals into digital signals and sends them to controller 207. Controller 207 processes, analyzes and judges the digital signals, and determines whether a natural gas leak has occurred based on preset algorithms and thresholds. When a natural gas leak is detected, the gas expands and absorbs heat, which causes the local temperature to drop and the gas to be ejected from the leak in the pipeline, generating high-frequency vibration. At this time, after analyzing and determining that there is a gas leak, controller 207 will promptly activate the audible and visual alarm light 208.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A natural gas pipeline leak detection device, comprising a control box, characterized in that: The control box is equipped with a detection mechanism, and the upper surface of the control box is equipped with an adjustment mechanism. The detection mechanism includes a detection ring, on which a temperature sensor and a vibration sensor are fixedly connected to both sides of the upper end face of the detection ring, respectively. A signal conditioning module, an analog-to-digital conversion module, and a controller are fixedly housed inside the control box. An audible and visual alarm light is fixedly connected to the upper part of one side of the outer wall of the control box. The temperature sensor, vibration sensor, signal conditioning module, analog-to-digital conversion module, controller, and audible and visual alarm light are electrically connected.

2. The natural gas pipeline leak detection device according to claim 1, characterized in that: The adjustment mechanism includes a fixed column and an adjustment rod. The fixed column is fixedly connected to the upper end face of the control box, and the adjustment rod is fixedly connected to the detection ring. The adjustment rod is movably sleeved inside the fixed column.

3. The natural gas pipeline leak detection device according to claim 2, characterized in that: The adjusting rod has a fixing groove on the lower part of the outer wall on both sides. The inner walls on both sides of the two fixing grooves are fixedly connected to a set of return springs. The opposite ends of the two set of return springs are fixedly connected to an adjusting plate. The opposite sides of the two adjusting plates are fixedly connected to a locking rod. The fixing column has multiple locking holes on both sides. The locking rod is locked in the locking hole.

4. The natural gas pipeline leak detection device according to claim 3, characterized in that: Limiting sliders are fixedly connected to both the upper and lower end faces of the adjusting plate, and limiting grooves are formed on the inner walls of both the upper and lower ends of the fixing groove. The limiting sliders are slidably disposed in the limiting grooves.

5. A natural gas pipeline leak detection device according to claim 1, characterized in that: The arc length of the detection ring is one-quarter of a circle.

6. A natural gas pipeline leak detection device according to claim 1, characterized in that: A power module is fixedly connected to the inner rear wall of the control box. The power module is electrically connected to the temperature sensor, vibration sensor, signal conditioning module, analog-to-digital converter, controller, and audible and visual alarm light.

7. A natural gas pipeline leak detection device according to claim 2, characterized in that: The fixed column and the adjusting rod are fitted together.

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