Quick leaking stoppage device for pipeline

Abstract

The utility model discloses a pipeline quick leaking stoppage device which comprises an outer sleeve and a hoop, the outer sleeve comprises a first half sleeve and a second half sleeve, two annular grooves are formed in the inner wall of the outer sleeve, sealing strips are arranged in the annular grooves in a one-to-one correspondence mode, and the first half sleeve and the second half sleeve are sleeved with the hoop. The sealing strips comprise the first semicircular sealing strip and the second semicircular sealing strip, the connecting faces of the first semicircular sealing strip and the second semicircular sealing strip are inclined faces which are matched with each other, the sealing strips are arranged on a pipeline in a sleeving mode, a leakage point of the pipeline is located between the two sealing strips, and the clamping hoop is arranged outside the outer sleeve in a sleeving mode and fastened with the outer sleeve. According to the quick leaking stoppage device for the pipeline, the sealing space is formed between the outer sleeve and the pipeline through the two sealing strips, so that a leaking point of the pipeline is sealed in the sealing space, and leakage prevention is achieved. The sealing structure is not limited by the shape and the size of a leakage point, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline leak sealing devices, and in particular to a rapid pipeline leak sealing device. Background Technology

[0002] In the iron and steel metallurgical industry, hydraulic systems serve as the core of power transmission for critical equipment such as continuous casting machines, rolling mills, and blast furnaces, and their reliability directly impacts the continuous operating efficiency of the production line. Hydraulic pipelines, as the carriers of hydraulic media within the system, are characterized by their large quantity (the length of pipelines in a single rolling mill system can reach 2-5 km) and complex layout (having to traverse harsh working conditions such as high-temperature zones and vibration zones). With the industry's development, the working pressure requirements for hydraulic systems are increasing. Currently, over 90% of high-pressure hydraulic pipelines (working pressure ≥21 MPa) utilize welded connections. This connection method initially offered the advantage of high structural strength, ensuring stable operation of the hydraulic system under high pressure, meeting the stringent power transmission requirements of modern iron and steel metallurgical production, and providing a solid guarantee for the efficient operation of equipment.

[0003] However, with prolonged use and the accumulation of time and potential defects in the welding process, hydraulic pipelines are experiencing increasingly frequent weld breakage and oil leaks, posing numerous serious challenges to the production and operation of the steel and metallurgical industry. The hazards caused by hydraulic pipeline leaks are comprehensive and cannot be ignored. From a resource utilization perspective, oil leakage directly leads to the continuous loss of hydraulic oil. To maintain the normal operation of the hydraulic system, companies have to frequently replenish the hydraulic oil, which undoubtedly increases production costs significantly and wastes resources. Regarding the performance of the hydraulic system, hydraulic oil leakage makes it difficult to maintain the system pressure at normal operating levels. The pressure drop further prevents hydraulic equipment from reaching the expected working pressure, greatly reducing work efficiency and potentially causing equipment to fail to start or operate normally, seriously interfering with the continuity and stability of steel and metallurgical production.

[0004] Furthermore, the safety hazards are not to be underestimated. Leaked hydraulic oil, in the complex environment of steel metallurgical production, is highly susceptible to contact with high-temperature equipment, open flames, or static electricity. These factors could potentially trigger combustion or even explosions, posing a significant threat to the lives of personnel on the production site and causing severe damage to production equipment, resulting in substantial economic losses. In addition, once leaked hydraulic oil becomes contaminated, it cannot be recycled and must be treated as pollutant. This not only increases the company's environmental treatment costs but also causes serious pollution to the surrounding environment, violating the sustainable development principles advocated by modern industrial production.

[0005] When hydraulic oil pipes leak, existing methods for sealing the leak include welding, sealing the leak with clamps, or, as disclosed in Chinese patent application number 202121040823.9, sealing the leak with a conical rubber plug. While welding, as a traditional repair method, can temporarily solve the problem in some cases, the secondary heat input can expand the heat-affected zone by 2-3 times. This can not only damage the original performance of the pipeline but also introduce new stress concentration points, increasing the risk of further cracking. In the long run, this method does not fundamentally solve the problem and may even further reduce the reliability of the pipeline.

[0006] While clamps and conical rubber plugs are relatively easy to use, they can only seal small leaks, and their effectiveness is often affected by factors such as the shape and size of the leak and the hydraulic oil pressure, resulting in some uncertainty. When larger leaks occur in hydraulic lines, these traditional plugging methods become ineffective, leading to continuous hydraulic oil leakage and failing to effectively solve serious leakage problems faced in actual production. There is an urgent need for a new plugging technology and device that can effectively seal larger leaks to meet the urgent needs of the steel and metallurgical industry for the reliability and safety of hydraulic systems, ensure smooth production, reduce operating costs and safety risks for enterprises, and reduce environmental pollution. Utility Model Content

[0007] The purpose of this invention is to provide a device for rapid pipe sealing.

[0008] The technical solution to achieve the purpose of this utility model is: a pipe quick leak sealing device, including an outer sleeve and a clamp. The outer sleeve includes a first half-sleeve and a second half-sleeve, with a gap between the first half-sleeve and the second half-sleeve forming a notch. Two annular grooves are formed along the circumference of the inner wall of the outer sleeve, spaced apart axially along the outer sleeve. Each annular groove contains a corresponding sealing strip, which is coaxial with the outer sleeve. The inner surface of the sealing strip protrudes inward from the inner surface of the outer sleeve. The sealing strip includes a first semi-circular sealing strip and a second semi-circular sealing strip, which are in contact to form a closed ring. The connecting surfaces of the first and second semi-circular sealing strips are mutually fitting inclined surfaces. The sealing strip is fitted onto the pipe and coaxially arranged with the pipe. The inner surface of the sealing strip is in sealing contact with the pipe. The leak point of the pipe is located between the two sealing strips. The clamp is fitted outside the outer sleeve and securely fastened to it.

[0009] Furthermore, the notch and the connecting surface are offset along the circumference of the outer sleeve. The notch and the connecting surface can be opposite each other or offset along the circumference of the outer sleeve. Compared to the former, when the notch and the connecting surface are offset along the circumference of the outer sleeve, the outer sleeve can form a secondary seal for the notch, resulting in better overall sealing.

[0010] Furthermore, the number of clamps is two or more, and the two or more clamps are arranged along the axial direction of the outer sleeve. The number of clamps can be one, two, or even more. Compared to a single clamp, when there are two or more clamps, the force on the outer sleeve is more even along the axial direction, resulting in a better fastening effect.

[0011] Furthermore, the first and second half-sleeves have the same radius and the same arc length. This arrangement not only makes the structure more regular and the force exerted by the outer sleeve on the sealing strip more uniform, but also allows the production of the first and second half-sleeves to be combined into one, making both processing and material handling more convenient.

[0012] Furthermore, the central angle α of the first half-sleeve is 170°~178°. This configuration, while ensuring that the first and second half-sleeves can tightly grip the sealing strip under the fastening of the clamp, also results in a relatively small notch, a large working surface of the outer sleeve on the sealing strip, and better sealing performance of the sealing strip.

[0013] Furthermore, the first semicircular sealing strip and the second semicircular sealing strip have the same arc length.

[0014] This utility model relates to a rapid pipe leak-sealing device. By installing two sealing strips in the two annular grooves of the outer casing, the two sealing strips create a sealed space between the outer casing and the pipe, thereby sealing any leaks within this space and preventing leakage. This sealing structure is not limited by the shape or size of the leak; regardless of the shape or size of the leak, the two sealing strips can seal it from both sides, thus broadening its application range.

[0015] This utility model relates to a rapid pipe leak-sealing device. The sealing strip is confined within the annular groove of the outer casing, ensuring a stable and reliable installation and a more robust overall sealing structure. Furthermore, the sealing strip comprises a first semi-circular sealing strip and a second semi-circular sealing strip. Both the connecting surfaces of the first and second semi-circular sealing strips are inclined. Under the action of a clamping force, a pressure force is formed between the connecting surfaces of the first and second semi-circular sealing strips, resulting in a higher sealing performance and better leak-proof effect. Attached Figure Description

[0016] Figure 1 is a structural schematic diagram of the pipeline quick leak sealing device of this utility model;

[0017] Figure 2 is a schematic cross-sectional view of the structure along line AA in Figure 1;

[0018] Figure 3 is a cross-sectional view of the pipe quick sealing device of this utility model along line BB in Figure 2. Detailed Implementation

[0019] The preferred embodiment of the pipeline rapid leak sealing device of this utility model will be described in detail below with reference to the accompanying drawings:

[0020] As shown in Figures 1 to 3, a quick pipe sealing device includes an outer sleeve 1 and a clamp 2. The outer sleeve 1 includes a first half-sleeve 11 and a second half-sleeve 12 joined together. The first half-sleeve 11 and the second half-sleeve 12 have a gap forming a notch 13. Two annular grooves 14 are formed circumferentially on the inner wall of the outer sleeve 1, spaced apart along the axial direction of the outer sleeve 1. Each annular groove 14 contains a corresponding sealing strip 3, which is coaxial with the outer sleeve 1. The inner surface of the sealing strip 3 protrudes inward from the inner surface of the outer sleeve 1. The sealing strip 3 includes a first semi-circular sealing strip 31 and a second semi-circular sealing strip 32, which are in contact to form a closed ring. The connecting surface 30 of the first semi-circular sealing strip 31 and the second semi-circular sealing strip 32... The sealing strip 3 is fitted onto the pipe 100 and is coaxially arranged with the pipe 100. The inner surface of the sealing strip 3 is in sealing contact with the pipe 100. The leakage point 101 of the pipe 100 is located between the two sealing strips 3. The clamp 2 is fitted onto the outer sleeve 1 and is fastened to the outer sleeve 1.

[0021] This utility model relates to a rapid pipe leak sealing device. The leak point 101 of the pipe 100 is located between two sealing strips 3. The two sealing strips 3 seal the leak point 101 from both sides of the pipe 100. The sealing strips 3 are installed within an annular groove 14, which limits their position. Due to the presence of the notch 13, the annular groove 14 is not a complete annular groove, but is formed by two arc-shaped grooves spaced apart on the first half-sleeve 11 and the second half-sleeve 12. The first half-sleeve 11 and the second half-sleeve 12 together form an outer sleeve 1, which serves as the outer casing for the sealing strips 3 and also seals the leak. The clamp 2 is used to fasten the first half-sleeve 11 and the second half-sleeve 12.

[0022] The present invention relates to a rapid pipe sealing device, wherein the sealing strip 3 is composed of a first semi-circular sealing strip 31 and a second semi-circular sealing strip 32. The connecting surfaces 30 of the first semi-circular sealing strip 31 and the second semi-circular sealing strip 32 are both inclined surfaces. When the sealing strip 3 is assembled, the connecting surfaces 30 of the first semi-circular sealing strip 31 and the second semi-circular sealing strip 32 are in contact and fit together.

[0023] This utility model of a quick pipe sealing device, under the fastening action of the clamp 2, the outer sleeve 1 and the sealing strip 3 on it hug the pipe 100, so that a sealing space is formed between the two sealing strips 3, and the leak point 101 of the pipe 100 is sealed in the sealing space, thereby achieving leak prevention.

[0024] This utility model relates to a rapid pipe leak-sealing device. Two sealing strips 3 are installed in the two annular grooves 14 of the outer casing 1. These sealing strips 3 create a sealed space between the outer casing 1 and the pipe 100, thereby sealing the leak point 101 of the pipe 100 within this space and preventing leakage. This sealing structure is not limited by the shape or size of the leak point 101. Regardless of the shape or size of the leak point 101 in the pipe 100, the two sealing strips 3 can seal it from both sides, thus broadening its application range.

[0025] In this utility model of a rapid pipe leak-sealing device, the sealing strip 3 is confined within the annular groove 14 of the outer sleeve 1, ensuring a stable and reliable installation of the sealing strip 3 and a more reliable overall sealing structure. Furthermore, in this utility model of a rapid pipe leak-sealing device, the sealing strip 3 is composed of a first semi-circular sealing strip 31 and a second semi-circular sealing strip 32. Both the connecting surfaces 30 of the first and second semi-circular sealing strips 31 and 32 are inclined surfaces. Under the action of the clamping force, a pressing force is formed between the connecting surfaces 30 of the first and second semi-circular sealing strips 31 and 32, resulting in a higher sealing performance and better leak-proof effect.

[0026] In this utility model of a rapid pipe sealing device, preferably, the notch 13 and the connecting surface 30 are offset along the circumference of the outer sleeve 1. The notch 13 and the connecting surface 30 can be opposite each other or offset along the circumference of the outer sleeve 1. Compared to the former, when the notch 13 and the connecting surface 30 are offset along the circumference of the outer sleeve 1, the outer sleeve 1 can form a secondary seal for the notch 13, resulting in better overall sealing performance.

[0027] In this utility model of a rapid pipe sealing device, preferably, the number of clamps 2 is two or more, and the two or more clamps 2 are arranged along the axial direction of the outer sleeve 1. The number of clamps 2 can be one, two, or even more. Compared with a single clamp 2, when there are two or more clamps 2, the force on the outer sleeve 1 is more uniform along the axial direction, resulting in a better tightening effect.

[0028] In this utility model of a rapid pipe sealing device, preferably, the first half-sleeve 11 and the second half-sleeve 12 have the same radius and the same arc length. This arrangement not only makes the structure more regular, but also makes the force exerted by the outer sleeve 1 on the sealing strip 3 more uniform. Furthermore, since the first half-sleeve 11 and the second half-sleeve 12 have the same structure, their production can be combined into one, making both processing and material sourcing more convenient.

[0029] In this utility model of a rapid pipe sealing device, preferably, the central angle α of the first half-sleeve 11 is 170°~178°. This arrangement, while ensuring that the first half-sleeve 11 and the second half-sleeve 12 can tightly grip the sealing strip 3 under the tightness of the outer sleeve 1 and the clamp 2, also results in a relatively small notch 13, a large contact area between the outer sleeve 1 and the sealing strip 3, and better sealing performance of the sealing strip 3.

[0030] In this utility model of a quick pipe sealing device, preferably, the first semicircular sealing strip 31 and the second semicircular sealing strip 32 have the same arc length.

[0031] In this utility model, the sealing strip 3 is a rubber strip, and the structures of the clamp 2 and the sealing strip 3 are existing structures. Therefore, this utility model will not elaborate further on these aspects.

[0032] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the protection scope of this utility model.

Claims

1. A rapid pipe sealing device, characterized in that: The device includes an outer sleeve and a clamp. The outer sleeve comprises a first half-sleeve and a second half-sleeve, with a gap between them forming a notch. Two annular grooves are formed circumferentially on the inner wall of the outer sleeve, spaced apart axially. Each annular groove contains a corresponding sealing strip, which is coaxial with the outer sleeve. The inner surface of the sealing strip protrudes inward from the inner surface of the outer sleeve. The sealing strip includes a first semi-circular sealing strip and a second semi-circular sealing strip, which are in contact to form a closed ring. The connecting surfaces of the first and second semi-circular sealing strips are mutually fitting inclined surfaces. The sealing strip is fitted onto the pipe and coaxially arranged with it. The inner surface of the sealing strip is in sealed contact with the pipe. The leakage point of the pipe is located between the two sealing strips. The clamp is fitted outside the outer sleeve and securely fastened to it.

2. The rapid pipe sealing device according to claim 1, characterized in that: The notch and the connecting surface are offset along the circumference of the outer sleeve.

3. The rapid pipe sealing device according to claim 1, characterized in that: The number of clamps is two or more, and the two or more clamps are arranged along the axial direction of the outer sleeve.

4. The rapid pipe sealing device according to claim 1, characterized in that: The first half-sleeve and the second half-sleeve have the same radius and the same arc length.

5. The rapid pipe sealing device according to claim 4, characterized in that: The central angle α of the first half-sleeve is 170°~178°.

6. The rapid pipe sealing device according to claim 1, characterized in that: The first semicircular sealing strip and the second semicircular sealing strip have the same arc length.

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