A pipeline leak monitoring instrument suitable for use in a gas storage

Abstract

This invention relates to the field of pipeline testing technology, specifically to a pipeline leak monitoring instrument suitable for gas storage facilities. The instrument includes a support plate, a controller, an installation mechanism, a detection mechanism, and a repair mechanism. The installation mechanism includes an upper shell, a lower shell, a locking mechanism, and two telescopic components. The detection mechanism includes an ultrasonic sensor, a signal converter, an upper gear ring, a lower gear ring, and a rotating component. The repair mechanism includes a nozzle, a rotating drum, a material tank, a transmission component, and a compression component. The ultrasonic sensor, signal converter, and rotating component are electrically connected to the controller. This invention relates to a pipeline leak monitoring instrument suitable for gas storage facilities, capable of detecting and promptly repairing any minor leak point on the outer wall of a long-distance pipeline used to transport natural gas to the storage facility. It is highly practical, and the instrument is easily disassembled from the support plate, facilitating rapid inspection and replacement of its internal components.

Description

Technical Field

[0001] This invention relates to the field of pipeline testing technology, and specifically to a pipeline leak monitoring instrument suitable for gas storage facilities. Background Technology

[0002] A gas storage facility is a "container" for storing natural gas. The "gas storage facility" we usually refer to is generally an underground gas storage facility. Underground gas storage facilities are artificial gas fields or reservoirs formed by re-injecting commercial natural gas transported through long-distance pipelines into underground space. They are typically built near cities where downstream natural gas users are located. Gas storage facilities operate on an annual cycle, with "gas extraction in winter and spring, and gas injection in summer and autumn" being the standard operating procedure for gas storage facilities in my country.

[0003] Long-distance pipelines used to transport natural gas to gas storage facilities are of paramount importance for their sealing. Leaks can cause significant economic losses and easily lead to various safety accidents. While large leaks can be detected through manual inspections and flow rate monitoring, minor leaks are much more difficult to detect. Leak monitoring of long-distance pipelines typically involves installing monitoring instruments at designated locations on the pipeline's outer wall, such as near gas storage facilities or at bends where the natural gas flows at high speeds. The high velocity of the natural gas as it flows through bends creates a strong scouring force on the pipe wall, gradually thinning the wall and eventually causing a leak.

[0004] Existing monitoring devices have the following shortcomings: 1. The outer casing of the device is usually fixed to the support or plate on the pipeline by welding. Disassembly and assembly are relatively laborious. Especially when the internal components fail, it is extremely inconvenient to remove and replace them from the pipeline, which requires discarding the entire monitoring device, which undoubtedly increases the monitoring cost.

[0005] 2. When a leak is detected, it cannot be repaired quickly. Workers need to bring tools to the site to carry out the repair, which is time-consuming and labor-intensive, and will also affect the normal operation of the pipeline.

[0006] 3. Most existing devices are designed with exposed surfaces and lack protective structures. The underground environment is dark and damp, making the components susceptible to corrosion, which reduces their service life. Summary of the Invention

[0007] The purpose of this invention is to provide a pipeline leak monitoring instrument suitable for gas storage facilities, which can solve the problem that minor leaks in pipelines cannot be detected quickly and repaired in a timely manner.

[0008] To achieve this objective, the present invention adopts the following technical solution: A pipeline leak monitoring instrument suitable for gas storage facilities is provided, including a support plate, with the pipeline fixed to the outer wall of the support plate via a connecting flange, and the support plate having a circular hole for the pipeline to pass through. It also includes controllers, installation mechanisms, testing mechanisms, and repair mechanisms; The mounting mechanism is located on the outer wall of the support plate. The mounting mechanism includes an upper shell, a lower shell, a latch, and two telescopic components. Four guide blocks are symmetrically arranged on the outer wall of the support plate. The upper shell and the lower shell are respectively inserted into the four guide blocks. Two guide grooves are provided on the outer wall of both the upper shell and the lower shell. Each guide block is inserted into one guide groove. The upper shell and the lower shell are connected by a plug-in post. The two telescopic components are respectively located on the outer wall of the upper shell and the lower shell. The latch is located between the two telescopic components. The detection mechanism is mounted on the installation mechanism to detect pipeline leaks. The detection mechanism includes an ultrasonic sensor, a signal converter, an upper gear ring, a lower gear ring, and a rotating assembly. The upper and lower gear rings are rotatably mounted on the outer walls of the upper and lower shells, respectively. The upper and lower gear rings are connected by four insert rods. The rotating assembly is inserted into the outer wall of the support plate. A mounting plate is fixed on the outer wall of the upper gear ring. The ultrasonic sensor is fixed on the outer wall of the mounting plate. The signal converter is fixed on the outer wall of the support plate. The repair mechanism is located on the outer wall of the support plate to repair leaks. The repair mechanism includes a nozzle, a rotating drum, a material tank, a transmission assembly, and an extrusion assembly. The nozzle is fixedly located next to the ultrasonic sensor. The rotating drum is rotatably mounted on the outer wall of the support plate via a hinge rod. The material tank is fixedly located on the outer wall of the support plate. The extrusion assembly is located on the outer wall of the support plate. The transmission assembly is located between the upper gear ring and the hinge rod. The ultrasonic sensor is electrically connected to the signal converter. The ultrasonic sensor, signal converter, and rotating assembly are electrically connected to the controller.

[0009] Furthermore, the rotating assembly includes a servo motor and a first gear. The servo motor is inserted into the outer wall of the support plate, and the first gear is fixed on the output end of the servo motor. The first gear meshes with the upper half gear ring, and the servo motor is electrically connected to the controller.

[0010] Furthermore, the transmission assembly includes a second gear, a third gear, a belt, and two synchronous pulleys. The second gear and the third gear are rotatably mounted on the outer wall of the support plate via a rotating shaft. The second gear and the third gear are meshed together. The upper half gear ring is meshed with the second gear. The two synchronous pulleys are respectively fixed on the outer wall of one of the rotating shafts and the hinge rod. The belt is sleeved between the two synchronous pulleys.

[0011] Furthermore, the extrusion assembly includes an electric push rod, a push plate, and an extrusion rod. The electric push rod is fixedly mounted on the outer wall of the support plate, and a groove is provided on the outer wall of the support plate. The push plate is slidably mounted inside the groove, and the extrusion rod is inserted into the inside of the material tank. The output ends of the extrusion rod and the electric push rod are respectively fixedly connected to the two ends of the push plate, and the electric push rod is electrically connected to the controller.

[0012] Furthermore, each telescopic component includes a buckle, a clamping spring, a limiting block, and a push block. The upper half and the lower half of the shell are each fixedly provided with a docking block at the end away from the first gear. The limiting block is fixedly provided on the outer wall of one of the docking blocks. The buckle is slidably provided on the limiting block. The clamping spring is sleeved on the outer wall of the buckle. A flange is fixedly provided on the outer wall of the buckle. The limiting block and the flange respectively abut against the two ends of the clamping spring. The push block is fixedly provided on the top of the buckle. Each docking block is provided with a through hole and a socket for the buckle to pass through and be limited.

[0013] Furthermore, the latch includes a pull block and two insert blocks. Each mating block has two slots symmetrically arranged, and each insert block is inserted into the inside of one slot. The pull block is fixed between the two insert blocks. Each insert block has a limiting hole for the latch to pass through. The ends of each latch and each insert block are beveled.

[0014] Furthermore, the end of the material tank away from the extrusion rod is provided with a spray hole, one end of the spray pipe is fixedly provided with a conveying pipe, the end of the conveying pipe away from the spray pipe is fixedly connected to the spray hole of the material tank, the conveying pipe is wound and connected to the rotating drum, the bottom of the spray pipe is provided with a nozzle, and the end of the nozzle is provided with a strip-shaped nozzle.

[0015] Furthermore, a wedge-shaped scraper is fixedly provided at one end of the mounting plate near the second gear, and the wedge-shaped scraper is attached to the outer wall of the pipe.

[0016] Furthermore, a smoothing wheel is rotatably provided at the end of the mounting plate away from the wedge-shaped scraper.

[0017] Furthermore, a protective shell is provided on the outer wall of the end of the support plate near the servo motor, and two half-shells are inserted on the outer wall of the end of the support plate near the material tank. The two half-shells fit together, and each half-shell has a semi-circular groove for the pipe to pass through.

[0018] The beneficial effects of this invention are: 1. This invention, through the design of an installation mechanism, namely an upper shell, a lower shell, a latch, and two telescopic components, allows the upper and lower shells to cover and limit the upper and lower gear rings, ensuring that the upper and lower gear rings can rotate within the upper and lower shells, thereby achieving rotational detection by the ultrasonic sensor. The latch and two telescopic components enable quick assembly and disassembly of the upper and lower shells, facilitating their separation and assembly / disassembly. Furthermore, by designing four guide blocks on the support plate and two guide grooves on each of the upper and lower shells, each guide... Each component is matched with a guide groove, allowing the upper and lower shells to precisely align with the support plate. This enables quick assembly and disassembly of the upper and lower gear rings. Furthermore, the design of two half-shells for sealing protection not only protects the internal components on the support plate from corrosion caused by the dark and humid environment inside the gas storage tank, thus extending their service life and reducing maintenance costs, but also allows for quick disassembly, repair, or replacement of internal components in case of malfunction, eliminating the need to discard the entire monitoring device and further reducing monitoring costs.

[0019] 2. The present invention, through the design of a repair mechanism, namely a nozzle, a rotating drum, a material tank, a transmission assembly, and an extrusion assembly, enables the ultrasonic sensor to rotate around the outer wall of the long-distance pipeline to detect minor leaks while simultaneously achieving automatic following of the nozzle and the ultrasonic sensor, without pulling on the delivery pipe. Thus, even if any leak is detected on the circular path at a designated location, the delivery pipe can deliver the sealant from the material tank to the nozzle for automatic repair. When the delivery pipe needs to be retracted, the servo motor can be reversed by the controller, which facilitates the next detection and repair work, thereby improving the flexibility of the instrument.

[0020] 3. This invention, through the design of a controller, detection mechanism, and repair mechanism, can send signals to a computer monitor in the monitoring room when a minor leak is detected, facilitating viewing by monitoring personnel. The controller then cuts off the power to the servo motor, stopping the rotation of the ultrasonic sensor. The repair mechanism then repairs the leak. Simultaneously, by designing a smoothing wheel, when the sealant is sprayed from the nozzle's strip-shaped nozzle to the leak point, the controller restarts the servo motor, causing the first gear to drive the upper gear ring to continue rotating counter-clockwise. This, in turn, drives the smoothing wheel to smooth the sealant sprayed on the leak point. Compared to existing technologies, this invention enables remote automatic repair without requiring workers to be dispatched to the site, saving time and effort. It not only improves repair efficiency and reduces labor costs but also lowers repair costs. Furthermore, the use of adhesive to repair and seal leaks effectively prevents open flames and avoids ignition and explosion.

[0021] 4. The present invention features a wedge-shaped scraper that fits snugly against the outer wall of the long-distance pipeline. When the upper gear ring rotates, the wedge-shaped scraper is fixedly connected to the upper gear ring via a mounting plate, causing it to rotate along with the upper gear ring. This cleans and scrapes away dust on the annular path to be detected on the outer wall of the pipeline, facilitating rapid detection by the ultrasonic sensor and improving detection speed and effectiveness.

[0022] 5. By designing a connecting flange and support plate, this invention allows for the direct removal of the flange when the monitoring location of a leak point on a long-distance pipeline needs to be changed. Since there are certain gaps between the upper and lower gear rings, the upper and lower shells and the pipeline, and the support plate is designed with a circular hole for the pipeline to pass through, the support plate can be directly pushed to slide along the outer wall of the long-distance pipeline until it slides to the position to be measured, and then the flange can be tightened. This enables the detection of any position on the entire long-distance pipeline, improving the practicality of the instrument.

[0023] 6. By designing a transmission component, this invention enables the detection and repair mechanisms to operate synchronously, achieving a linkage effect. That is, while the ultrasonic sensor rotates around the outer wall of the pipe to detect the leak point, the nozzle and the ultrasonic sensor automatically follow each other simultaneously, saving the time difference between detecting the leak point and repairing it, improving the repair speed, reducing the number of drive power supplies used in the instrument, lowering the overall power consumption of the instrument, which helps to reduce monitoring costs, and also reducing the overall structure of the instrument, reducing the manufacturing cost and footprint, improving portability, and facilitating quick installation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the present invention with the two half-shells removed; Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 This is a partial cross-sectional view of the material tank and support plate of the present invention; Figure 6 for Figure 5 Enlarged view of point B in the image; Figure 7 This is a schematic diagram of the planar structure of the present invention; Figure 8 for Figure 7Enlarged view of point C in the image; Figure 9 for Figure 7 Enlarged view of point D in the image; Figure 10 This is a three-dimensional structural diagram of the upper shell, lower shell, upper gear ring, lower gear ring, and support plate of the present invention. In the picture: Support plate 1, guide block 10, protective shell 11, half-shell 12, Connecting flange 2, Controller 3 Installation mechanism 4, Upper shell 40, connector pins 400. Lower shell 41, mating block 410, slot 411, Lock 42, pull block 420, insert block 421, limit hole 422 Telescopic component 43, buckle 430, clamping spring 431, limit block 432, push block 433, flange 434, through hole 435, insertion hole 436. Testing agency 5, Ultrasonic sensor 50, Signal converter 51, Upper gear ring 52, wedge scraper 520, smoothing wheel 521 Lower gear ring 53, insert rod 530. Rotating component 54, servo motor 540, first gear 541 Repair mechanism 6, Nozzle 60, delivery pipe 600, nozzle 601, strip nozzle 602. Rotary drum 61, Material tank 62, Transmission assembly 63, second gear 630, third gear 631, belt 632, synchronous pulley 633. Extrusion assembly 64, electric push rod 640, push plate 641, extrusion rod 642. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "inner," "outer," "top," and "bottom" are based on the orientations or positional relationships shown in the accompanying drawings. They are intended only to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the components referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] Reference Figures 1 to 10 As shown, a pipeline leakage monitoring instrument suitable for gas storage facilities includes a support plate 1. The pipeline is fixed on the outer wall of the support plate 1 via a connecting flange 2. The support plate 1 has a circular hole for the pipeline to pass through. When it is necessary to change the monitoring position of the leakage point on the pipeline, the flange can be directly removed. Since there is a certain gap between the upper half gear ring 52, the lower half gear ring 53, the upper half shell 40 and the lower half shell 41 and the pipeline, and the support plate 1 is designed with a circular hole for the pipeline to pass through, the support plate 1 can be directly pushed to slide along the outer wall of the pipeline until it slides to the position to be measured and then the flange is tightened. It also includes controller 3, installation mechanism 4, testing mechanism 5, and repair mechanism 6; The mounting mechanism 4 is located on the outer wall of the support plate 1. The mounting mechanism 4 includes an upper shell 40, a lower shell 41, a latch 42, and two telescopic components 43. Four guide blocks 10 are symmetrically arranged on the outer wall of the support plate 1. The upper shell 40 and the lower shell 41 are respectively inserted into the four guide blocks 10. The outer walls of the upper shell 40 and the lower shell 41 are each provided with two guide grooves. Each guide block 10 is inserted into one guide groove. The upper shell 40 and the lower shell 41 are connected by a plug-in post 400. The two telescopic components 43 are respectively located on the outer walls of the upper shell 40 and the lower shell 41. The latch 42 is located between the two telescopic components 43. The detection mechanism 5 is mounted on the installation mechanism 4 to detect pipeline leaks. The detection mechanism 5 includes an ultrasonic sensor 50, a signal converter 51, an upper gear ring 52, a lower gear ring 53, and a rotating assembly 54. The upper gear ring 52 and the lower gear ring 53 are rotatably mounted on the outer walls of the upper shell 40 and the lower shell 41, respectively. The upper gear ring 52 and the lower gear ring 53 are connected by four insert rods 530. The rotating assembly 54 is inserted into the outer wall of the support plate 1. A mounting plate is fixedly mounted on the outer wall of the upper gear ring 52. The ultrasonic sensor 50 is fixedly mounted on the outer wall of the mounting plate. The signal converter 51 is fixedly mounted on the outer wall of the support plate 1. Repair mechanism 6 is installed on the outer wall of support plate 1 to repair leak points. Repair mechanism 6 includes nozzle 60, rotating drum 61, material tank 62, transmission assembly 63 and extrusion assembly 64. Nozzle 60 is fixedly installed next to ultrasonic sensor 50. Rotating drum 61 is rotatably installed on the outer wall of support plate 1 through hinge rod. Material tank 62 is fixedly installed on the outer wall of support plate 1. Extrusion assembly 64 is installed on the outer wall of support plate 1. Transmission assembly 63 is installed between upper gear ring 52 and hinge rod. Ultrasonic sensor 50 is electrically connected to signal converter 51. Ultrasonic sensor 50, signal converter 51 and rotating assembly 54 are electrically connected to controller 3.

[0029] Reference Figure 3 As shown, the rotating assembly 54 includes a servo motor 540 and a first gear 541. The servo motor 540 is inserted into the outer wall of the support plate 1, and the first gear 541 is fixedly mounted on the output end of the servo motor 540. The first gear 541 meshes with the upper half gear ring 52. The servo motor 540 is electrically connected to the controller 3. Existing long-distance pipelines used to transport natural gas to gas storage facilities require monitoring instruments to be installed at designated locations on the outer wall for leak detection to prevent losses caused by leaks. The controller 3 is electrically connected to a remote terminal, allowing monitoring personnel to monitor pipeline leaks in real time from a monitoring room. When pipeline inspection is required, the first... First, the servo motor 540 is started by the controller 3, causing its output end to rotate clockwise. Since its output end is fixedly connected to the first gear 541, and the first gear 541 is meshed with the upper half gear ring 52, it drives the upper half gear ring 52 and the lower half gear ring 53 to rotate counterclockwise. Since the ultrasonic sensor 50 is fixedly connected to the upper half gear ring 52 through the mounting plate, the ultrasonic sensor 50 rotates along the specified position as the path for detection. When the ultrasonic sensor 50 detects a slight leak at the specified position of the pipeline, it sends the signal to the computer monitor in the monitoring room through the signal converter 51 for easy viewing by the monitoring personnel.

[0030] Reference Figure 3As shown, the transmission assembly 63 includes a second gear 630, a third gear 631, a belt 632, and two synchronous pulleys 633. The second gear 630 and the third gear 631 are rotatably mounted on the outer wall of the support plate 1 via a rotating shaft. The second gear 630 and the third gear 631 are meshed together. The upper gear ring 52 is meshed with the second gear 630. The two synchronous pulleys 633 are respectively fixed on the outer wall of one of the rotating shafts and the hinge rod. The belt 632 is sleeved between the two synchronous pulleys 633. While the ultrasonic sensor 50 rotates counterclockwise with the upper gear ring 52, the second gear 630 is meshed with the upper gear ring 52, causing the second gear 630 and the third gear 631 to rotate counterclockwise. 1. Engaging connection: Two synchronous pulleys 633 are fixedly connected to one of the rotating shafts and the hinge rod respectively. The two synchronous pulleys 633 are connected by a belt 632, which drives the rotating drum 61 to rotate counterclockwise, realizing the unwinding of the conveying pipe 600, thereby realizing the automatic following of the nozzle 60 and the ultrasonic sensor 50 without pulling the conveying pipe 600. In this way, even if any slight leak point is detected on the circular path at a designated position, the conveying pipe 600 can deliver the sealant in the material tank 62 to the nozzle 60 for automatic repair. When the conveying pipe 600 needs to be rewound, the servo motor 540 can be reversed by the controller 3, which also facilitates the next inspection and repair work.

[0031] Reference Figure 6 As shown, the extrusion assembly 64 includes an electric push rod 640, a push plate 641, and an extrusion rod 642. The electric push rod 640 is fixedly mounted on the outer wall of the support plate 1. A groove is provided on the outer wall of the support plate 1, and the push plate 641 is slidably disposed inside the groove. The extrusion rod 642 is inserted into the material tank 62. The output ends of the extrusion rod 642 and the electric push rod 640 are respectively fixedly connected to the two ends of the push plate 641. The electric push rod 640 is electrically connected to the controller 3. When a slight leakage point is detected, the controller 3 first... When the servo motor 540 is powered off, the rotation of the ultrasonic sensor 50 stops. Since the nozzle 60 is designed to be next to the ultrasonic sensor 50 and the nozzle 601 faces the detection end of the ultrasonic sensor 50, the electric push rod 640 is started by the controller 3. Since its output end is fixedly connected to the extrusion rod 642 through the push plate 641, and the extrusion rod 642 is inserted into the material tank 62, the sealant in the material tank 62 is squeezed from the delivery pipe 600 into the interior of the nozzle 60 and flows towards the nozzle 601.

[0032] Reference Figure 8As shown, each telescopic component 43 includes a buckle 430, a clamping spring 431, a limiting block 432, and a push block 433. A mating block 410 is fixedly provided at the end of the upper half-shell 40 and the lower half-shell 41 away from the first gear 541. The limiting block 432 is fixedly provided on the outer wall of one of the mating blocks 410. The buckle 430 slides on the limiting block 432. The clamping spring 431 is sleeved on the outer wall of the buckle 430. A flange 434 is fixedly provided on the outer wall of the buckle 430. The limiting block 432 and the flange 434 respectively abut against the two ends of the clamping spring 431. The push block 433 is fixedly provided at the top of the buckle 430. Each mating block 410 has a through hole 435 for the buckle 430 to pass through and be limited. When a malfunction occurs and the upper half shell 40, lower half shell 41, upper half gear ring 52, and lower half gear ring 53 need to be removed from the support plate 1, first remove the mounting plate and its wedge scraper 520, ultrasonic sensor 50, nozzle 60, and smoothing wheel 521 from the upper half gear ring 52. Then remove the first gear 541 and the second gear 630. In this way, the disassembly path of the upper half gear ring 52 will not be blocked. Then, push the two push blocks 433 in opposite directions manually. Since the buckle 430 is fixedly connected to the push block 433, the bottom end of the buckle 430 will be disengaged from the insertion hole 436 and slide into the inside of the through hole 435. During this process, the clamping spring 431 changes from a stretched state to a taut state.

[0033] Reference Figure 8 As shown, the latch 42 includes a pull block 420 and two insert blocks 421. Each mating block 410 has two symmetrically arranged slots 411, and each insert block 421 is inserted into one slot 411. The pull block 420 is fixed between the two insert blocks 421. Each insert block 421 has a limiting hole 422 for the buckle 430 to pass through. The ends of each buckle 430 and each insert block 421 are beveled. When the end of each buckle 430 away from the push block 433 disengages from the insertion hole 436 and slides into the through hole 435, the two buckles 430 are also pulled out from the two limiting holes 422. At this time, the two insert blocks 421 are no longer limited by the two buckles 430, and can then be pulled through. Block 420 pulls out the two insert blocks 421 from the two slots 411 in the two mating blocks 410, and then pulls the lower half shell 41 vertically downward from the bottom of the upper half shell 40, so that the insert post 400 on the upper half shell 40 is pulled out from the lower half shell 41. Then the upper half shell 40 is pulled out horizontally from the other two guide blocks 10. Since the upper half gear ring 52 and the lower half gear ring 53 are inserted together, and the upper half gear ring 52 is embedded in the upper half shell 40, all three can be removed from the support plate 1 together. The installation steps are the reverse of the above steps. Compared with the method of directly welding the detection structure to the support plate 1, the disassembly and assembly are time-saving and labor-saving, and the replacement of parts is also more convenient. In addition, there is no need to discard the entire monitoring instrument, which helps to reduce the monitoring cost.

[0034] Reference Figure 4 and Figure 9 As shown, the material tank 62 has a spray hole at the end away from the extrusion rod 642, and a conveying pipe 600 is fixedly provided at one end of the spray pipe 60. The end of the conveying pipe 600 away from the spray pipe 60 is fixedly connected to the spray hole of the material tank 62. The conveying pipe 600 is wound and connected to the rotating drum 61. The bottom of the spray pipe 60 has a nozzle 601, and the end of the nozzle 601 has a strip-shaped nozzle 602. When the sealant is squeezed from the nozzle 601 to the strip-shaped nozzle 602, it is sprayed from the strip-shaped nozzle 602 to the leak point. Compared with the circular nozzle, the strip-shaped nozzle 602 will make the sprayed sealant not accumulate in a cone shape but spread evenly, thereby achieving even spreading and covering of the leak point, which is convenient for the smoothing wheel 521 to roll and improve the repair effect.

[0035] Reference Figure 4 As shown, a wedge-shaped scraper 520 is fixedly provided at one end of the mounting plate near the second gear 630. The wedge-shaped scraper 520 is attached to the outer wall of the pipe. When the upper gear ring 52 rotates, the wedge-shaped scraper 520 is fixedly connected to the upper gear ring 52 through the mounting plate, so that the wedge-shaped scraper 520 rotates with the upper gear ring 52, cleaning and scraping the dust on the annular path to be detected on the outer wall of the pipe, thereby facilitating the rapid detection of the ultrasonic sensor 50 and improving the detection rate.

[0036] Reference Figure 4 As shown, a smoothing wheel 521 is rotatably mounted on the end of the mounting plate away from the wedge-shaped scraper 520. When the sealant is sprayed from the strip nozzle 602 at the end of the nozzle 601 to the leak point, the servo motor 540 is restarted by the controller 3, thereby driving the upper gear ring 52 to continue to rotate counterclockwise through the first gear 541, thereby driving the smoothing wheel 521 to rotate and smooth the sealant sprayed on the leak point. This helps to improve the repair quality. Compared with the existing technology, it can realize remote automatic repair without having to send workers to the site for repair, which helps to save labor costs and reduce repair costs.

[0037] Reference Figure 1 and Figure 2 As shown, a protective shell 11 is provided on the outer wall of the support plate 1 near the servo motor 540, and two semi-shells 12 are inserted on the outer wall of the support plate 1 near the material tank 62. The two semi-shells 12 fit together, and each semi-shell 12 has a semi-circular groove for the pipe to pass through. The protective shell 11 seals and protects the electric push rod 640 and the servo motor 540. The two semi-shells 12 together shield and protect the end of the support plate 1 away from the electric push rod 640, thereby protecting the internal components, which helps to extend the service life of each component and reduce maintenance costs. When the components inside the two semi-shells 12 fail, it is also convenient to disassemble and repair them.

[0038] The working principle of this invention: Existing long-distance pipelines used to transport natural gas to gas storage facilities require monitoring instruments to be installed at designated locations on their outer walls for leak detection to prevent losses caused by leaks. The controller 3 is electrically connected to a remote terminal, allowing monitoring personnel to monitor pipeline leaks in real time from a monitoring room. When pipeline inspection is required, the controller 3 first starts the servo motor 540, causing its output end to rotate clockwise. Since its output end is fixedly connected to the first gear 541, and the first gear 541 meshes with the upper gear ring 52, it drives the upper gear ring 52 and the lower gear ring 53 to rotate counterclockwise. Because the ultrasonic sensor 50 is installed... The mounting plate is fixedly connected to the upper half-tooth ring 52, thereby causing the ultrasonic sensor 50 to rotate along a designated path for detection. When the ultrasonic sensor 50 detects a leak at a designated location in the pipeline, it sends the signal to the computer monitor in the monitoring room via the signal converter 51 for easy viewing by monitoring personnel. As the upper half-tooth ring 52 rotates, the wedge-shaped scraper 520 is fixedly connected to the upper half-tooth ring 52 via the mounting plate, causing the wedge-shaped scraper 520 to rotate along with the upper half-tooth ring 52, cleaning and scraping away dust on the annular path to be detected on the outer wall of the pipeline, thus facilitating rapid detection by the ultrasonic sensor 50 and improving the detection rate.

[0039] While the ultrasonic sensor 50 rotates counterclockwise following the upper gear ring 52, the second gear 630 meshes with the upper gear ring 52, and the second gear 630 and the third gear 631 mesh with each other. The two synchronous pulleys 633 are fixedly connected to one of the rotating shafts and the hinge rod respectively. The two synchronous pulleys 633 are connected by a belt 632, which drives the drum 61 to rotate counterclockwise, thereby realizing the unwinding of the conveying pipe 600. This enables the nozzle 60 to automatically follow the ultrasonic sensor 50 without pulling on the conveying pipe 600. In this way, even if any leak point is detected on the circular path at a specified position, the conveying pipe 600 can deliver the sealant in the material tank 62 to the nozzle 60 for automatic repair. When the conveying pipe 600 needs to be rewound, the servo motor 540 can be reversed by the controller 3, which also facilitates the next detection and repair work.

[0040] When a leak is detected, the servo motor 540 is first powered off by the controller 3 to stop the rotation of the ultrasonic sensor 50. Since the nozzle 60 is designed to be next to the ultrasonic sensor 50 and the nozzle 601 faces the detection end of the ultrasonic sensor 50, the electric push rod 640 is then started by the controller 3. Since its output end is fixedly connected to the extrusion rod 642 through the push plate 641 and the extrusion rod 642 is inserted into the material tank 62, the sealant in the material tank 62 is squeezed from the delivery pipe 600 into the interior of the nozzle 60 and flows towards the nozzle 601.

[0041] When the sealant is squeezed from the nozzle 601 to the strip nozzle 602, it is sprayed from the strip nozzle 602 to the leak point. Compared with the circular nozzle, the strip nozzle 602 will make the sealant spread evenly instead of piled up in a cone shape, thus achieving even coverage of the leak point, which is convenient for the smoothing roller 521 to roll and improve the repair effect.

[0042] When the sealant is sprayed from the strip nozzle 602 at the end of the nozzle 601 to the leak point, the servo motor 540 is restarted by the controller 3. This causes the upper gear ring 52 to continue rotating counterclockwise via the first gear 541, which in turn drives the smoothing wheel 521 to rotate and smooth the sealant sprayed on the leak point. This improves the repair quality and, compared to existing technologies, enables remote automatic repair without the need to send workers to the site, thus saving labor costs and reducing repair costs.

[0043] When a malfunction occurs and the upper half shell 40, lower half shell 41, upper half gear ring 52, and lower half gear ring 53 need to be removed from the support plate 1, first remove the mounting plate and its wedge scraper 520, ultrasonic sensor 50, nozzle 60, and smoothing wheel 521 from the upper half gear ring 52. Then remove the first gear 541 and the second gear 630. In this way, the disassembly path of the upper half gear ring 52 will not be blocked. Then, push the two push blocks 433 in opposite directions manually. Since the buckle 430 is fixedly connected to the push block 433, the bottom end of the buckle 430 will be disengaged from the insertion hole 436 and slide into the through hole 435. During this process, the clamping spring 431 changes from a stretched state to a taut state.

[0044] When the end of each snap fastener 430 furthest from the push block 433 disengages from the insertion hole 436 and slides into the through hole 435, the two snap fasteners 430 are also pulled out from the two limiting holes 422. At this time, the two insert blocks 421 are no longer limited by the two snap fasteners 430, and can then be pulled out from the two slots 411 in the two mating blocks 410 by the pull block 420. Then, the lower half shell 41 can be pulled vertically downward from the bottom of the upper half shell 40, so that the insertion post on the upper half shell 40... 400 is pulled out from the lower half shell 41, and then the upper half shell 40 is pulled out horizontally from the other two guide blocks 10. Since the upper half gear ring 52 and the lower half gear ring 53 are inserted together, and the upper half gear ring 52 is embedded in the upper half shell 40, all three can be removed from the support plate 1 together. The installation steps are the reverse of the above steps. Compared with the method of directly welding the detection structure to the support plate 1, the disassembly and assembly are time-saving and labor-saving, and the replacement of parts is also more convenient. In addition, there is no need to discard the entire monitoring instrument, which helps to reduce the monitoring cost.

[0045] The protective shell 11 provides sealed protection for the electric push rod 640 and the servo motor 540. The two half-shells 12 together shield and protect the end of the support plate 1 away from the electric push rod 640, thereby protecting the internal components, which helps to extend the service life of each component and reduce maintenance costs. In the event of a failure of the components inside the two half-shells 12, it is also convenient to disassemble and repair them.

Claims

1. A pipeline leak monitoring instrument suitable for gas storage facilities, characterized in that, include: Support plate (1), the pipe is fixed on the outer wall of support plate (1) through connecting flange (2), and the support plate (1) is provided with round hole for pipe to pass through; It also includes a controller (3), an installation mechanism (4), a testing mechanism (5), and a repair mechanism (6); The installation mechanism (4) is located on the outer wall of the support plate (1). The installation mechanism (4) includes an upper shell (40), a lower shell (41), a latch (42), and two telescopic components (43). Four guide blocks (10) are symmetrically arranged on the outer wall of the support plate (1). The upper shell (40) and the lower shell (41) are respectively inserted into the four guide blocks (10). The outer walls of the upper shell (40) and the lower shell (41) are each provided with two guide grooves. Each guide block (10) is inserted into one guide groove. The upper shell (40) and the lower shell (41) are connected by a plug-in post (400). The two telescopic components (43) are respectively located on the outer walls of the upper shell (40) and the lower shell (41). The latch (42) is located between the two telescopic components (43). The detection mechanism (5) is installed on the installation mechanism (4) to detect pipeline leaks. The detection mechanism (5) includes an ultrasonic sensor (50), a signal converter (51), an upper gear ring (52), a lower gear ring (53), and a rotating assembly (54). The upper gear ring (52) and the lower gear ring (53) are respectively rotatably installed on the outer walls of the upper shell (40) and the lower shell (41). The upper gear ring (52) and the lower gear ring (53) are connected by four insert rods (530). The rotating assembly (54) is installed on the outer wall of the support plate (1). An installation plate is fixed on the outer wall of the upper gear ring (52). The ultrasonic sensor (50) is fixed on the outer wall of the installation plate. The signal converter (51) is fixed on the outer wall of the support plate (1). The repair mechanism (6) is located on the outer wall of the support plate (1) to repair the leak point. The repair mechanism (6) includes a nozzle (60), a rotating drum (61), a material tank (62), a transmission assembly (63), and an extrusion assembly (64). The nozzle (60) is fixedly located next to the ultrasonic sensor (50). The rotating drum (61) is rotatably located on the outer wall of the support plate (1) via a hinge rod. The material tank (62) is fixedly located on the outer wall of the support plate (1). The extrusion assembly (64) is located on the outer wall of the support plate (1). The transmission assembly (63) is located between the upper gear ring (52) and the hinge rod. The ultrasonic sensor (50) is electrically connected to the signal converter (51). The ultrasonic sensor (50), the signal converter (51), and the rotating assembly (54) are electrically connected to the controller (3).

2. The pipeline leak monitoring instrument for gas storage facilities according to claim 1, characterized in that: The rotating assembly (54) includes a servo motor (540) and a first gear (541). The servo motor (540) is inserted into the outer wall of the support plate (1), and the first gear (541) is fixed on the output end of the servo motor (540). The first gear (541) meshes with the upper half gear ring (52), and the servo motor (540) is electrically connected to the controller (3).

3. The pipeline leak monitoring instrument for gas storage facilities according to claim 2, characterized in that: The transmission assembly (63) includes a second gear (630), a third gear (631), a belt (632), and two synchronous pulleys (633). The second gear (630) and the third gear (631) are rotatably mounted on the outer wall of the support plate (1) via a rotating shaft. The second gear (630) and the third gear (631) are meshed together. The upper gear ring (52) is meshed with the second gear (630). The two synchronous pulleys (633) are respectively fixed on the outer wall of one of the rotating shafts and the hinge rod. The belt (632) is sleeved between the two synchronous pulleys (633).

4. The pipeline leak monitoring instrument for gas storage facilities according to claim 3, characterized in that: The extrusion assembly (64) includes an electric push rod (640), a push plate (641), and an extrusion rod (642). The electric push rod (640) is fixedly mounted on the outer wall of the support plate (1). The outer wall of the support plate (1) is provided with a groove. The push plate (641) is slidably mounted inside the groove. The extrusion rod (642) is inserted into the material tank (62). The output ends of the extrusion rod (642) and the electric push rod (640) are fixedly connected to the two ends of the push plate (641), respectively. The electric push rod (640) is electrically connected to the controller (3).

5. The pipeline leak monitoring instrument for gas storage facilities according to claim 4, characterized in that: Each telescopic component (43) includes a buckle (430), a retaining spring (431), a limiting block (432), and a push block (433). A mating block (410) is fixedly provided at the end of the upper half-shell (40) and the lower half-shell (41) away from the first gear (541). The limiting block (432) is fixedly provided on the outer wall of one of the mating blocks (410). The buckle (430) slides on the limiting block (432) and abuts against the spring. Spring (431) is sleeved on the outer wall of buckle (430). A flange (434) is fixedly provided on the outer wall of buckle (430). Limiting block (432) and flange (434) respectively abut against the two ends of spring (431). Push block (433) is fixedly provided on the top of buckle (430). Each mating block (410) is provided with through hole (435) and insertion hole (436) for buckle (430) to pass through and limit.

6. The pipeline leak monitoring instrument for gas storage facilities according to claim 5, characterized in that: The latch (42) includes a pull block (420) and two insert blocks (421). Each mating block (410) has two slots (411) symmetrically arranged. Each insert block (421) is inserted into the inside of one slot (411). The pull block (420) is fixed between the two insert blocks (421). Each insert block (421) has a limiting hole (422) for the buckle (430) to pass through. The ends of each buckle (430) and each insert block (421) are beveled.

7. The pipeline leak monitoring instrument for gas storage facilities according to claim 6, characterized in that: The material tank (62) is provided with a spray hole at one end away from the extrusion rod (642), and a conveying pipe (600) is fixedly provided at one end of the spray pipe (60). The end of the conveying pipe (600) away from the spray pipe (60) is fixedly connected to the spray hole of the material tank (62). The conveying pipe (600) is wound and connected to the rotating drum (61). The bottom of the spray pipe (60) is provided with a nozzle (601), and the end of the nozzle (601) is provided with a strip-shaped nozzle (602).

8. The pipeline leak monitoring instrument for gas storage facilities according to claim 7, characterized in that: A wedge-shaped scraper (520) is fixedly provided at one end of the mounting plate near the second gear (630), and the wedge-shaped scraper (520) is attached to the outer wall of the pipe.

9. The pipeline leak monitoring instrument for gas storage facilities according to claim 8, characterized in that: A smoothing wheel (521) is rotatably provided at the end of the mounting plate away from the wedge-shaped scraper (520).

10. The pipeline leak monitoring instrument for gas storage facilities according to claim 9, characterized in that: A protective shell (11) is provided on the outer wall of the support plate (1) near the servo motor (540). Two half-shells (12) are inserted on the outer wall of the support plate (1) near the material tank (62). The two half-shells (12) are fitted together, and each half-shell (12) is provided with a semi-circular groove for the pipe to pass through.

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