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CN-224214959-U - Quick plugging device of pipeline

CN224214959UCN 224214959 UCN224214959 UCN 224214959UCN-224214959-U

Abstract

The utility model discloses a quick plugging device for a pipeline, which comprises an outer sleeve and a clamp, wherein the outer sleeve comprises a first half sleeve and a second half sleeve, annular grooves are formed in the inner wall of the outer sleeve, the number of the annular grooves is two, sealing strips are arranged in each annular groove in a one-to-one correspondence mode, each sealing strip comprises a first semicircular sealing strip and a second semicircular sealing strip, the connecting surfaces of the first semicircular sealing strip and the second semicircular sealing strip are mutually matched inclined surfaces, the sealing strips are sleeved on the pipeline, leakage points of the pipeline are located between the two sealing strips, and the clamp is sleeved outside the outer sleeve and is fastened with the outer sleeve. According to the quick plugging device for the pipeline, a sealing space is formed between the outer sleeve and the pipeline by utilizing the two sealing strips, so that a leakage point of the pipeline is sealed in the sealing space, and the leakage prevention is realized. The sealing structure is not limited by the shape and the size of the leakage point, and the application range is wider.

Inventors

  • Zhang Biaoji
  • YANG SHIQIANG
  • Zheng si

Assignees

  • 福建罗源闽光钢铁有限责任公司

Dates

Publication Date
20260508
Application Date
20250612

Claims (6)

  1. 1. The quick plugging device for the pipeline is characterized by comprising an outer sleeve and a clamp, wherein the outer sleeve comprises a first half sleeve and a second half sleeve, a gap is formed between the first half sleeve and the second half sleeve, the gap forms a notch, annular grooves are formed in the inner wall of the outer sleeve along the circumferential direction of the inner wall of the outer sleeve, the number of the annular grooves is two, the annular grooves are distributed at intervals along the axial direction of the outer sleeve, sealing strips are arranged in the annular grooves in a one-to-one correspondence manner, the sealing strips are coaxial with the outer sleeve, the inner surfaces of the sealing strips are inwards protruded out of the inner surface of the outer sleeve, the sealing strips comprise a first semicircular sealing strip and a second semicircular sealing strip, the first semicircular sealing strip and the second semicircular sealing strip are in contact connection to form a closed annular shape, the sealing strips are sleeved on the pipeline and are coaxially arranged with the pipeline, the inner surfaces of the sealing strips of the outer sleeve are in a sealing manner, and the leakage points of the pipeline are located between the sealing strips of the outer sleeve and the clamp are fastened with the outer sleeve.
  2. 2. The quick plugging device for a pipeline according to claim 1, wherein the notch and the connecting surface are distributed in a staggered manner along the circumferential direction of the outer sleeve.
  3. 3. The quick plugging device for pipelines according to claim 1, wherein the number of the clamps is more than two, and the more than two clamps are distributed along the axial direction of the outer sleeve.
  4. 4. The quick plugging device of claim 1 wherein the first half casing and the second half casing have the same radius and the arc lengths of the first half casing and the second half casing are the same.
  5. 5. The quick plugging device for pipes according to claim 4, wherein the central angle alpha of the first half casing is 170-178 degrees.
  6. 6. The quick plugging device of claim 1, wherein the arc lengths of the first semicircular sealing strip and the second semicircular sealing strip are the same.

Description

Quick plugging device of pipeline Technical Field The utility model relates to the technical field of pipeline plugging devices, in particular to a quick plugging device for a pipeline. Background In the ferrous metallurgy industry, the reliability of a hydraulic system serving as a power transmission core of key equipment such as a continuous casting machine, a rolling mill, a blast furnace and the like is directly related to the continuous operation efficiency of a production line. The hydraulic pipeline is used as a transmission carrier of the hydraulic medium in the system, and has the characteristics of huge quantity (the pipeline length of a single rolling mill system can reach 2-5 km) and complex layout (severe working conditions such as a high temperature area, a vibration area and the like are needed to be traversed). With the development of industry, the requirement on the working pressure of a hydraulic system is higher and higher, and at present, more than 90% of high-pressure hydraulic pipelines (the working pressure is more than or equal to 21 MPa) are connected by adopting welding. The connecting mode has the advantage of high structural strength at the initial stage, can ensure that the hydraulic system stably operates under high pressure, meets the severe requirements of modern ferrous metallurgy production on power transmission, and provides solid guarantee for efficient operation of equipment. However, during long-term use, the phenomenon of oil leakage during open welding of hydraulic pipelines is more frequent with the accumulation of time and some potential defects possibly existing in the welding process, and the production operation of the ferrous metallurgy industry is provided with a plurality of serious challenges. The damage caused by the leakage of the hydraulic oil pipe is all-round and cannot be ignored. From the perspective of resource utilization, leakage of oil directly leads to continuous loss of hydraulic oil, and enterprises have to frequently supplement new hydraulic oil in order to maintain normal operation of a hydraulic system, which obviously increases production cost and causes resource waste. For the performance of a hydraulic system, the pressure in the system is difficult to maintain at a normal working level due to leakage of hydraulic oil, the hydraulic equipment cannot reach the expected working pressure due to pressure drop, the working efficiency is greatly reduced, even the equipment cannot be started or operated normally, and the continuity and stability of ferrous metallurgy production are seriously disturbed. Furthermore, the potential safety hazard is not quite small. The leaked hydraulic oil is easy to contact high-temperature equipment, open fire sources or generate static electricity in a complex ferrous metallurgy production environment, combustion and even explosion accidents can be caused in the conditions, the life safety of personnel in a production site is greatly threatened, and meanwhile, the production equipment is possibly damaged seriously, so that huge economic loss is caused. In addition, once the leaked hydraulic oil is polluted, the leaked hydraulic oil cannot be recycled again and can only be treated as pollutants, so that the environmental protection treatment cost of enterprises is increased, serious pollution is caused to the surrounding environment, and the sustainable development concept advocated by modern industrial production is violated. After the hydraulic oil pipe leaks, the existing plugging method is to repair and weld the leakage points, or plug the leakage points through a clamp, or plug the leakage points through a cone-shaped rubber plugging piece as disclosed in patent document 202121040823.9 of Chinese patent application number. The repair welding method is used as a traditional repair means, and can temporarily solve the problem under certain conditions, but the secondary heat input can lead to expansion of a heat affected zone by 2-3 times, which may not only damage the original performance of the pipeline, but also introduce a new stress concentration point to increase the risk of re-cracking of the pipeline. The clamp and the conical rubber plugging piece are relatively simple and convenient to operate, but can only plug smaller leakage points, and the plugging effect is often influenced by factors such as the shape, the size, the hydraulic oil pressure and the like of the leakage points, so that certain uncertainty exists. When larger leakage points appear on the hydraulic oil pipe, the traditional leakage blocking means are incapable, so that continuous leakage of hydraulic oil is caused, the serious leakage problem faced in actual production cannot be effectively solved, and a novel leakage blocking technology and device capable of effectively blocking the larger leakage points are urgently needed, so that urgent demands of ferrous metallurgy industry on reliability and safety of a hydraulic system are met,