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CN-122007092-A - Old oil pipe inner wall laser cleaning rust removing device and application method thereof

CN122007092ACN 122007092 ACN122007092 ACN 122007092ACN-122007092-A

Abstract

The invention discloses a laser cleaning rust removing device for the inner wall of an old oil pipe and an application method thereof, wherein the laser cleaning rust removing device comprises a fixing module, a laser cleaning module, a dust collection module and a traction module, the fixing module comprises a first workbench and a first fixing piece, the laser cleaning module comprises a laser cleaning machine and a rotary laser head which are mutually connected, the traction module comprises a traction main body, a steel wire rope, a guide assembly and a winch assembly, the guide assembly and the first fixing piece are respectively arranged at the two opposite end parts of the first workbench, the traction main body is arranged between the guide assembly and the first fixing piece, the rotary laser head is arranged at the end part of the traction main body, which is close to the first fixing piece, the end part of the other end of the traction main body is connected with the steel wire rope, and the other end of the steel wire rope passes through the guide assembly and is connected with the winch assembly.

Inventors

  • TONG KE
  • BAI XIAOLIANG
  • LIU WENHONG
  • ZHANG YIMING
  • LI XIAOLONG
  • ZHANG ZHIYU

Assignees

  • 中国石油天然气集团有限公司
  • 中国石油集团工程材料研究院有限公司

Dates

Publication Date
20260512
Application Date
20241111

Claims (10)

  1. 1. Old oil pipe inner wall laser washs rust cleaning device, a serial communication port, including fixed module (10), laser cleaning module (20), dust absorption module (30) and traction module (40), fixed module (10) are including first workstation (100) and first mounting (102), laser cleaning module (20) are including laser cleaning machine (200), laser cleaning machine (200) are connected with rotatory laser head (201), traction module (40) are including traction main body (400), wire rope (401), direction subassembly (402) and hoist subassembly (403), direction subassembly (402) and first mounting (102) are installed respectively at first workstation (100) relative both ends tip, traction main body (400) set up between direction subassembly (402) and first mounting (102), rotatory laser head (201) are installed and are being close to the one end tip of first mounting (102) at traction main body (400), traction main body (400) other end tip and wire rope (401) are connected, the wire rope (401) other end passes direction subassembly (402) and hoist subassembly (403) are connected.
  2. 2. The laser cleaning rust removing device for the inner wall of the old oil pipe according to claim 1, wherein the traction main body (400) comprises a bi-directional reverse-threaded rod (404) and a pair of sliding supporting pieces (405), the pair of sliding supporting pieces (405) are respectively arranged at two end parts of the bi-directional reverse-threaded rod (404), one half of the bi-directional reverse-threaded rod (404) is positively threaded, the other half of the bi-directional reverse-threaded rod is reversely threaded, a plurality of limiting plates (406) are circumferentially arranged on the outer side of the bi-directional reverse-threaded rod (404), the sliding supporting pieces (405) comprise a fixed plate (407), a movable plate (408) and a spring pressing plate (409) which are arranged in parallel, two ends of the bi-directional reverse-threaded rod (404) respectively penetrate through the spring pressing plates (409), the movable plate (408) and the fixed plate (407) in sequence, the bi-directional reverse-threaded rod (404) is in sliding connection with the movable plate (408) and the fixed plate (407), a supporting spring (410) is sleeved on the bi-directional reverse-threaded rod (404) between the spring pressing plate (409), the supporting spring pressing plates (410) are respectively connected with the two ends of the fixed plate (408) and the fixed plate (407), the movable plate (408) and the spring pressing plate (409) are both in sliding connection with the limiting plate (406), and a plurality of supporting wheel sets (411) are connected between the fixed plate (407) and the movable plate (408).
  3. 3. The old oil pipe inner wall laser cleaning rust removing device according to claim 2, wherein the supporting wheel group (411) comprises a first roller rod (415), a second roller rod (416), a supporting roller (417) and a rotating pin shaft (418), the supporting roller (417) is sleeved on the rotating pin shaft (418), the supporting roller is in sliding connection with the rotating pin shaft (418), the rotating pin shaft (418) penetrates through the first roller rod (415) and the second roller rod (416), is fixedly connected with the first roller rod (415) and is in rotating connection with the second roller rod (416), the first roller rod (415) is hinged with the movable plate (408), a first connecting seat (419) and a first pin shaft which are connected with the first roller rod (415) are fixed on the movable plate (408), and a second connecting seat (420) and a second pin shaft which are connected with the second roller rod (416) are fixed on the fixed plate (407).
  4. 4. The old oil pipe inner wall laser cleaning rust removing device according to claim 2, wherein a matching shell (421) is arranged at the end part of the sliding support piece (405) close to the first fixing piece (102), a mounting cavity is formed in the matching shell (421), the opening end of the matching shell (421) is detachably connected with the fixing plate (407) through a bolt, the end part of one end of the bidirectional reverse thread threaded rod (404) extends into the mounting cavity, a first conical gear (422) and a second conical gear (423) which are meshed with each other are arranged in the mounting cavity, the first conical gear (422) is fixed on the bidirectional reverse thread threaded rod (404), a cylindrical protruding end is arranged at the outer end of the second conical gear (423), an adjusting notch (424) is formed in the matching shell (421), the end part of the cylindrical protruding end is located in the adjusting notch (424), a hexagonal groove is formed in the end face of the cylindrical protruding end, and a laser head connecting piece (425) is arranged between the rotary laser head (201) and the matching shell (421).
  5. 5. The old oil pipe inner wall laser cleaning rust removing device according to claim 2, wherein a connecting bolt (412) is connected between the spring pressing plate (409) and the movable plate (408), the connecting bolt (412) is in sliding connection with the spring pressing plate (409) and is fixedly connected with the movable plate (408), a limit nut (413) is sleeved on the connecting bolt (412), and the limit nut (413) is located between the spring pressing plate (409) and the movable plate (408).
  6. 6. The laser cleaning and rust removing device for the inner wall of the old oil pipe according to claim 1, wherein the guide assembly (402) comprises a guide mounting frame (426) and a plurality of guide wheels (427), the guide wheels (427) are parallel to each other and are all arranged on the guide mounting frame (426), the guide mounting frame (426) is fixed at the end part of the first workbench (100), and the steel wire rope (401) passes through the guide wheels (427) to be connected with the winding assembly (403).
  7. 7. The laser cleaning rust removing device for the inner wall of the old oil pipe according to claim 6, wherein the winding assembly (403) comprises a roller mounting frame (428), a winding roller (429) and a driving member (430), the winding roller (429) is arranged on the roller mounting frame (428), the driving member (430) is arranged on one side surface of the roller mounting frame (428) and is connected with the winding roller (429) through a coupling, a first guide member (431) and a second guide member (432) are oppositely arranged at the bottom of the roller mounting frame (428), the first guide member (431) comprises a first guide plate (433), a first guide rotating wheel (434) and a pair of first limit rotating wheels (435), the first guide plate (433) is fixed on the roller mounting frame (428), the first guide rotating wheel (434) is arranged on one side surface of the first guide plate (433) close to the guide assembly (402), the pair of first limit rotating wheels (435) are arranged on the bottom surface of the first guide plate (433), the second guide member (432) comprises a second guide plate (436), the second guide plate (437), the first guide plate (437) and the second guide plate (439) is connected with the first guide rod (439) in a penetrating manner, a pair of guide fixing rods (439) are erected on a roller mounting frame (428), two ends of the guide fixing rods are fixedly connected with the roller mounting frame (428) respectively, a second guide rotating wheel (437) is installed on one side face of a second guide plate (436), a pair of second limit rotating wheels (438) are installed on the bottom face of the second guide plate (436), a wire rope (401) sequentially penetrates through the guide wheels (427), the first guide rotating wheels (434), a pair of first limit rotating wheels (435), a pair of second limit rotating wheels (438) and the second guide rotating wheels (437) to be connected with a winding roller (429).
  8. 8. The laser cleaning and rust removing device for the inner wall of the old oil pipe according to claim 1, wherein the dust collection module (30) comprises a dust collector (300) and a dust collection pipeline (301) connected with the dust collector (300).
  9. 9. The laser cleaning and rust removing device for the inner wall of the old oil pipe according to claim 1, wherein the fixing module (10) comprises a pair of first fixing pieces (102), and further comprises a second workbench (101), the second workbench (101) is arranged on one side of the first workbench (100), and the pair of first fixing pieces (102) are respectively arranged on the first workbench (100) and the second workbench (101).
  10. 10. An application method of the laser cleaning and rust removing device for the inner wall of the old oil pipe according to any one of claims 1-9 is characterized by comprising the steps of fixing the old oil pipe to be cleaned on a fixed module (10), moving one end of a traction main body (400) provided with a rotary laser head (201) to one end of the old oil pipe to be cleaned through a threading device, enabling the other end of the old oil pipe to be cleaned to be close to a guide assembly (402), taking down the threading device, sleeving a dust collection module (30) on one end of the old oil pipe to be cleaned close to the rotary laser head (201), finally starting a laser cleaning module (20), the dust collection module (30) and the traction module (40), winding a steel wire rope (401) in the traction module (40), pulling the traction main body (400) to move in the direction of the guide assembly (402), cleaning and rust removing the inner side wall of the old oil pipe to be cleaned through the rotary laser head (201), and collecting dust generated in the cleaning process by the dust collection module (30).

Description

Old oil pipe inner wall laser cleaning rust removing device and application method thereof Technical Field The invention belongs to the technical field of pipeline cleaning equipment, and relates to a laser cleaning rust removing device for the inner wall of an old oil pipe and an application method thereof. Background The oil pipe is a special pipe for communicating the bottom of the well with the wellhead, and accounts for more than 10% of the total amount of the steel for the petroleum industry. Is a relatively large cost expenditure in the production operation of oil and gas fields. Typical outside diameter dimensions include phi 60.3mm, phi 73.02mm, phi 89.5mm, etc., typically about 10m in length. It follows that the oil pipe belongs to the class of steel pipes with smaller calibers. At present, a large number of old oil pipes exist in the extended oil fields, the Shanxi gas fields and the Changning natural gas fields, and the recycled old oil pipes are manufactured and reused, so that the method has considerable economic benefit for oil field enterprises and has wide market application prospect. After the oil pipe is used for a long time, oxidation, corrosion and other conditions can be generated due to external factors, and the oxidation or corrosion can cause a layer of rust to be attached to the inner side wall of the metal oil pipe, so that the normal use of the oil pipe is affected. The surface rust removal is an important first process for remanufacturing of the old oil pipe, so that the service life of the oil pipe can be effectively prolonged, and the safety of the oil pipe can be improved. At present, when the inner side wall of the old oil pipe is derusted, the method is generally divided into a mechanical cleaning method and a chemical cleaning method. The mechanical cleaning method is to brush the inner wall of the old oil pipe by using tools such as a steel brush, a nylon brush and the like or to clean the inner wall of the old oil pipe by sand blasting by using a sand blaster. However, this approach is often accompanied by high intensity noise during implementation, constituting a significant acoustic environmental pollution. In addition, in view of the limitation of the inner diameter of the oil pipe, the mechanical cleaning is difficult to fully penetrate into the fine part of the inner wall, so that the cleaning effect is not satisfactory. The chemical cleaning method generally uses acid washing or rust remover to etch and clean the inner side wall of the old oil pipe, and during the cleaning process, a large amount of solution containing chemical is usually generated, and is not easy to process, and the solution is easy to pollute the environment. Therefore, the rust removing method in the prior art has the problem of poor cleaning effect or significant environmental pollution risk, and a more efficient and environment-friendly rust removing solution is needed to be explored. The Chinese patent publication No. CN117161983A discloses an automatic sand blasting and rust removing device for the inner wall of an old oil pipe, which adopts a sand blasting process and still has the problem of serious environmental pollution when in use. In the three chinese inventions CN116197542a, CN110813934A and CN202210511372, a pipe rust removing device using laser cleaning is disclosed, and in the three inventions, the old oil pipe is removed by laser, but the laser rust removing device provided in the three inventions is only suitable for removing rust from the outer side surface of the old oil pipe and is not suitable for removing rust from the inner wall of the old oil pipe, so there is still no suitable laser rust removing device for removing rust from the inner wall of the old oil pipe, especially for removing rust from the inner wall of the small-caliber old oil pipe. Disclosure of Invention The invention aims to provide a laser cleaning and rust removing device for the inner wall of an old oil pipe, which solves the problems that the existing rust removing device has poor cleaning effect on the inner wall of the old oil pipe, is particularly difficult to be applied to cleaning the inner wall of the old oil pipe with smaller caliber and has serious environmental pollution during use. The invention further aims to provide an application method of the laser cleaning rust removing device for the inner wall of the old oil pipe. The invention adopts a first technical scheme that the laser cleaning rust removing device for the inner wall of the old oil pipe comprises a fixing module, a laser cleaning module, a dust collection module and a traction module, wherein the fixing module comprises a first workbench and a first fixing piece, the laser cleaning module comprises a laser cleaning machine, the laser cleaning machine is connected with a rotary laser head, the traction module comprises a traction main body, a steel wire rope, a guide assembly and a winding assembly, the guide assembly and the firs