Leakage detection device for natural gas pipeline
By designing a natural gas pipeline leakage detection device that can pull out the probe and retract and release mechanism, the problem of inaccurate detection in narrow spaces is solved, and more accurate detection results and more efficient equipment use is achieved.
Patent Information
- Application Number
- CN202420948147.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-06
AI Technical Summary
The existing natural gas pipeline leakage detection technology is not accurate enough when detecting narrow spaces, resulting in inaccurate detection results and difficult equipment to enter the space where the natural gas pipeline is located, increasing labor costs.
A leak detection device including a housing and a retracting and retracting mechanism is designed. The detection probe can be pulled outward. The combustible gas sensor and the threading hose can be used to conduct detection in a narrow space and pass through the knob and gear system. Simple and quick data extension cable.
It improves the accuracy and scope of application of the test results, simplifies the use of the equipment, and reduces detection errors and labor costs.
Smart Images
Figure CN222256172U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of natural gas pipeline leakage detection, in particular to a natural gas pipeline leakage detection device. Background Art
[0002] A natural gas pipeline refers to a pipeline that transports natural gas from a mining site or a processing plant to a city's gas distribution center or an industrial enterprise user, also known as a gas transmission pipeline. In the current era of deepening urban modernization, the scale of urban gas pipeline construction has also expanded. In order to avoid a series of negative impacts caused by gas leakage, improving the level of related detection technology and maintenance technology has become an inevitable trend to promote urban development. Therefore, it is necessary to regularly use detection devices to detect whether the natural gas pipeline is leaking; in the existing technology, natural gas pipeline leakage detection technology can be divided into direct detection and indirect detection. Among them, direct detection is a more conventional detection method at the current stage. Its advantages are simple process and low cost. At the same time, the direct detection method also has the disadvantage of greatly increasing the manpower cost of the enterprise. The concentration of gas in the air is directly detected by odorization method, combustible gas detection method, infrared laser detection method, etc. to determine whether the natural gas pipeline is leaking. During the detection process, some natural gas pipelines are located in a small space, and the detection device is not convenient to enter the space where the natural gas pipeline is located. It can only be detected at a location far away from the natural gas pipeline, which is prone to inaccurate detection results. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a leakage detection device for a natural gas pipeline. The detection probe of the leakage detection device can be pulled outward, which is convenient for leak detection of natural gas pipelines in narrow spaces, making the detection results more accurate, and improving the application scope of the leakage detection device, which can effectively solve the problems in the background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leakage detection device for a natural gas pipeline, comprising a housing and a retractable mechanism;
[0005] Shell: An operation panel is provided at the lower end of the front surface, a display screen is provided at the upper end of the front surface of the shell, a data transmitter, a single-chip microcomputer and a battery are provided inside the shell respectively, a combustible gas sensor is placed in the storage slot at the left end of the shell, a threading hose is provided at the lower end of the combustible gas sensor, and the right end of the threading hose is fixedly connected to the shell, the output ends of the operation panel and the combustible gas sensor are electrically connected to the input end of the single-chip microcomputer, the input end of the single-chip microcomputer is electrically connected to the output end of the battery, and the input ends of the display screen and the data transmitter are electrically connected to the output end of the single-chip microcomputer;
[0006] Retractable mechanism: It is arranged in the middle of the shell, and is installed in conjunction with the threading hose. The detection probe of the leakage detection device can be pulled outward, which is convenient for leak detection of natural gas pipelines in narrow spaces, making the detection results more accurate and improving the application scope of the leakage detection device. The storage of the detection probe data extension line is simple and quick, which is convenient for the use of the leakage detection device.
[0007] Furthermore, the retracting and extending mechanism includes a lower guide wheel, a connecting plate and an upper guide wheel, the connecting plates are respectively vertically slidably connected to the inside of the shell, the upper connecting plate surface is respectively installed with the upper guide wheel, the lower connecting plate surface is respectively installed with the lower guide wheel, the lower guide wheel and the upper guide wheel are staggered left and right, the threading hose respectively passes around the lower end of the outer arc surface of the lower guide wheel and the upper end of the outer arc surface of the upper guide wheel to retract and extend the threading hose.
[0008] Furthermore, the retracting and releasing mechanism also includes a gear and a rack plate, the gear is rotatably connected to the front inner wall of the shell through a rotating shaft, and the rack plates are respectively arranged on the front surface of the connecting plate. Both rack plates are meshed and connected with the gear to facilitate the movement of the connecting plate.
[0009] Furthermore, the retractable mechanism also includes a knob, which is arranged at the front end of the rotating shaft of the gear to facilitate the rotation of the gear.
[0010] Furthermore, the lower guide wheel and the upper guide wheel are both rotatably connected to the connecting plate via a rotating shaft, thereby reducing the friction force on the threading hose during the process of retracting and extending the threading hose.
[0011] Furthermore, an alarm is provided at the upper end of the shell, and the input end of the alarm is electrically connected to the output end of the single-chip microcomputer to send out an alarm signal.
[0012] Furthermore, a non-slip rubber sleeve is provided at the lower end of the outer side surface of the shell to facilitate gripping of the shell.
[0013] Compared with the prior art, the beneficial effects of the utility model are: the leakage detection device for the natural gas pipeline has the following advantages:
[0014] When in use, the combustible gas sensor is pulled out from the storage groove of the shell. During the pulling-out process, the threading hose exerts force on the lower guide wheel and the upper guide wheel, causing the two connecting plates to move relative to each other, providing space for the laying of the threading hose, and facilitating the combustible gas sensor to penetrate into the space where the natural gas pipeline is located to detect whether the natural gas pipeline is leaking. After the detection is completed, the gear is rotated by the knob to apply tension to the threading hose through the lower guide wheel and the upper guide wheel to retract the threading hose into the shell. The detection probe of the leakage detection device can be pulled outward, which is convenient for leak detection of natural gas pipelines in narrow spaces, making the detection results more accurate and improving the application scope of the leakage detection device. The storage of the detection probe data extension line is simple and quick, which is convenient for the use of the leakage detection device. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 It is a structural schematic diagram of the front view cross section of the overall device of the utility model;
[0017] Figure 3 It is a structural schematic diagram of a partial side cross-section of the overall device of the utility model.
[0018] In the figure: 1 housing, 2 operation panel, 3 display screen, 4 data transmitter, 5 single chip microcomputer, 6 battery, 7 combustible gas sensor, 8 threading hose, 9 retracting mechanism, 91 lower guide wheel, 92 connecting plate, 93 gear, 94 rack plate, 95 knob, 96 upper guide wheel, 10 alarm, 11 anti-slip rubber sleeve. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-3 ,This embodiment provides a technical solution: a leakage detection device for a natural gas pipeline, comprising a housing 1 and a retractable mechanism 9;
[0021] Shell 1: An operation panel 2 is provided at the lower end of the front surface thereof for convenient input of work instructions. A display screen 3 is provided at the upper end of the front surface of the shell 1 for displaying leakage detection data. A data transmitter 4, a single-chip microcomputer 5 and a battery 6 are provided inside the shell 1. The gas pipeline leakage signal is sent to a remote data receiving center through the data transmitter 4. The start and stop of the whole device are controlled by the single-chip microcomputer 5. The battery 6 provides power for the operation of the whole device. A combustible gas sensor 7 is placed in the storage slot at the left end of the shell 1. The combustible gas sensor 7 is used to detect whether the natural gas pipeline is leaking. A threading hose is provided at the lower end of the combustible gas sensor 7. 8. The right end of the threading hose 8 is fixedly connected to the housing 1, providing space for laying the data extension line. The output ends of the combustible gas sensor 7 and the operation panel 2 are electrically connected to the input end of the single-chip microcomputer 5, the input end of the single-chip microcomputer 5 is electrically connected to the output end of the battery 6, the input ends of the display screen 3 and the data transmitter 4 are electrically connected to the output end of the single-chip microcomputer 5, and an alarm 10 is provided at the upper end of the housing 1. The input end of the alarm 10 is electrically connected to the output end of the single-chip microcomputer 5. When a natural gas pipeline leak is detected, the alarm 10 sounds an alarm. The lower end of the outer side of the housing 1 is provided with an anti-slip rubber sleeve 11 to increase the friction of the surface of the housing 1 and facilitate the grip of personnel;
[0022] The retractable mechanism 9 is arranged in the middle of the housing 1. The retractable mechanism 9 is installed in cooperation with the threading hose 8. The retractable mechanism 9 includes a lower guide wheel 91, a connecting plate 92 and an upper guide wheel 96. The connecting plates 92 are respectively connected to the inside of the housing 1 by vertical sliding. The upper guide wheels 96 are respectively installed on the surface of the upper connecting plate 92, and the lower guide wheels 91 are respectively installed on the surface of the lower connecting plate 92. The lower guide wheels 91 and the upper guide wheels 96 are staggered left and right. The threading hose 8 bypasses the lower end of the outer arc surface of the lower guide wheel 91 and the upper end of the outer arc surface of the upper guide wheel 96 respectively. The retractable mechanism 9 also includes a gear 93 and a rack plate 94. The gear 93 is rotatably connected to the front inner wall of the housing 1 through a rotating shaft. The rack plates 94 are respectively arranged on the connecting plates 92. The front surface of the two rack plates 94 are meshed with the gear 93, and the gear 93 is rotated. The gear 93 is meshed with the rack plate 94, so that the rack plate 94 drives the two connecting plates 92 to be relatively separated, and the lower guide wheel 91 and the upper guide wheel 96 apply tension to the threading hose 8 to retract the threading hose 8 into the shell 1. The retracting mechanism 9 also includes a knob 95, which is arranged at the front end of the rotating shaft of the gear 93 to facilitate the rotation of the gear 93. The lower guide wheel 91 and the upper guide wheel 96 are rotatably connected to the connecting plate 92 through the rotating shaft. In the process of retracting and releasing the threading hose 8, the lower guide wheel 91 and the upper guide wheel 96 rotate relative to the threading hose 8 to reduce the friction force on the threading hose 8 during retraction and release.
[0023] The working principle of a natural gas pipeline leakage detection device provided by the utility model is as follows: when in use, the combustible gas sensor 7 is pulled out from the storage groove of the shell 1. In the process of pulling the combustible gas sensor 7 outward, the threading hose 8 applies a force to the lower guide wheel 91 and the upper guide wheel 96, so that the two connecting plates 92 move relative to each other, providing space for the threading hose 8 to lay out the line, so that the combustible gas sensor 7 can penetrate into the space where the natural gas pipeline is located to detect whether the natural gas pipeline is leaking. When a natural gas pipeline leak is detected, the alarm 10 sounds an alarm, and at the same time, the data transmitter 4 is used to transmit the leakage alarm signal to the remote data receiving center. After the detection is completed, the knob 95 is used to rotate the gear 93, and the gear 93 is meshed with the rack plate 94 to make the rack plate 94 drive the two connecting plates 92 to separate relatively, and the lower guide wheel 91 and the upper guide wheel 96 apply a pulling force to the threading hose 8, so that the threading hose 8 is pulled back into the shell 1, so as to facilitate the storage of the data extension line of the detection device.
[0024] It is worth noting that the single-chip microcomputer 5 disclosed in the above embodiment can use a PIC16F1823-I / P single-chip microcomputer, and the combustible gas sensor 7, the display screen 3, the data transmitter 4 and the alarm 10 can be freely configured according to the actual application scenario. The combustible gas sensor 7 can use an MQ-K5 combustible gas sensor, the display screen 3 can use a P1.66 display screen, the data transmitter 4 can use a CM6560P wireless data transmitter, and the alarm 10 can use a TGSG-108TB sound and light alarm. The single-chip microcomputer 5 controls the operation of the combustible gas sensor 7, the display screen 3, the data transmitter 4 and the alarm 10 using methods commonly used in the prior art.
[0025] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A natural gas pipeline leakage detection device, characterized in that: It comprises a housing (1) and a retractable mechanism (9); A housing (1): an operation panel (2) is provided at the lower end of the front surface of the housing (1); a display screen (3) is provided at the upper end of the front surface of the housing (1); a data transmitter (4), a single chip computer (5) and a storage battery (6) are provided inside the housing (1); a combustible gas sensor (7) is placed in a storage groove at the left end of the housing (1); a threading hose (8) is provided at the lower end of the combustible gas sensor (7); the right end of the threading hose (8) is fixedly connected to the housing (1); the output ends of the operation panel (2) and the combustible gas sensor (7) are both electrically connected to the input end of the single chip computer (5); the input end of the single chip computer (5) is electrically connected to the output end of the storage battery (6); the input ends of the display screen (3) and the data transmitter (4) are both electrically connected to the output end of the single chip computer (5); The retractable mechanism (9) is arranged in the middle of the housing (1), and the retractable mechanism (9) is installed in coordination with the threading hose (8); The retracting and releasing mechanism (9) comprises a lower guide wheel (91), a connecting plate (92) and an upper guide wheel (96); the connecting plates (92) are respectively connected to the inside of the housing (1) in a vertical sliding manner; the upper guide wheels (96) are respectively installed on the surface of the upper connecting plate (92); the lower guide wheels (91) are respectively installed on the surface of the lower connecting plate (92); the lower guide wheels (91) and the upper guide wheels (96) are staggered in the left and right directions; the threading hose (8) is respectively passed around the lower end of the outer arc surface of the lower guide wheel (91) and the upper end of the outer arc surface of the upper guide wheel (96); The retractable mechanism (9) further comprises a gear (93) and a rack plate (94); the gear (93) is rotatably connected to the front inner wall of the housing (1) via a rotating shaft; the rack plates (94) are respectively arranged on the front surface of the connecting plate (92); and the two rack plates (94) are both meshedly connected to the gear (93).
2. A natural gas pipeline leakage detection device according to claim 1, characterized in that: The retractable mechanism (9) further comprises a knob (95), and the knob (95) is arranged at the front end of the rotating shaft of the gear (93).
3. A natural gas pipeline leakage detection device according to claim 1, characterized in that: The lower guide wheel (91) and the upper guide wheel (96) are both rotatably connected to the connecting plate (92) via a rotating shaft.
4. A natural gas pipeline leakage detection device according to claim 1, characterized in that: An alarm (10) is provided at the upper end of the housing (1), and an input end of the alarm (10) is electrically connected to an output end of the single chip computer (5).
5. A natural gas pipeline leakage detection device according to claim 1, characterized in that: The lower end of the outer side surface of the housing (1) is covered with an anti-slip rubber sleeve (11).