CN114769241A - Hydraulic-assisted pressure induction pipe cleaning device - Google Patents
Hydraulic-assisted pressure induction pipe cleaning device Download PDFInfo
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- CN114769241A CN114769241A CN202210534785.5A CN202210534785A CN114769241A CN 114769241 A CN114769241 A CN 114769241A CN 202210534785 A CN202210534785 A CN 202210534785A CN 114769241 A CN114769241 A CN 114769241A
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- piston
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- cylinder body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
- B08B9/0553—Cylindrically shaped pigs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
- B08B9/0558—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles with additional jet means
Abstract
The invention relates to a hydraulic power-assisted pressure induction pipe cleaning device which is used for pipe cleaning construction such as pipeline liquid drainage and foam liquid drainage. The technical scheme is as follows: a cylinder body is arranged in a tube cleaner barrel, a large piston and a small piston are arranged in the cylinder body, the small piston is connected with a piston rod, the piston rod penetrates through a center hole of a barrel base and extends out to the front end, a support is arranged at the end of the piston rod, a conical head is arranged at the edge position of the support, and a through hole is formed in the base of the barrel at the position corresponding to the conical head; the guide rod passes through the base of the cylinder body, one end of the guide rod is arranged on the support, the other end of the guide rod is provided with a baffle ring, and a spring is arranged between the baffle ring and the base of the cylinder body. According to the invention, the pressure difference of the front end and the rear end of the pipe cleaner is amplified through the matching of the large oil cylinder and the small oil cylinder, so that the pressure induction of the pipe cleaner is more sensitive.
Description
Technical Field
The invention relates to a hydraulic power-assisted pressure induction pipe cleaning device which is used for pipe cleaning construction such as pipeline liquid drainage, foam liquid drainage and the like.
Background
Gas well water output problems are inevitable in natural gas exploitation, and even though separation is carried out through station equipment, a natural gas conveying pipeline still faces liquid accumulation problems. On the other hand, in the long-distance pipeline gas transmission process, the gas state is obviously changed due to the influence of elbows, pipeline fluctuation, valves and the like, so that natural gas in the pipeline generates condensate. Liquid in the pipe can gather in low-lying section gradually, causes half the pipe, full jam of managing, reduces pipeline transport capacity, can block the pipeline even when serious, leads to the unable normal operation of pipeline.
At present, pipeline operators generally arrange pipe cleaning operation according to the change of pipeline pressure drop, namely, after the pipeline pressure drop is increased to a certain degree, a pipeline cleaner is adopted to push liquid in a pipe out of the pipeline. The dredging pipe ware moves forward under the gaseous promotion of rear end, and under complicated operating mode such as undulant pipeline, the dredging pipe ware front and back end pressure differential fluctuation is violent, and dredging pipe ware front end hydrops is the bleeder to the dredging pipe ware rear end easily. After long-distance abrasion, the tube cleaner leather cup is difficult to achieve a better sealing effect, and the backflow of liquid at the front end is accelerated. Therefore, the liquid drainage effect of the conventional pipe cleaner is poor, and the purpose of controlling the pressure drop of the pipeline can be achieved by cleaning the pipe for many times. On the other hand, to the pipeline of a large amount of hydrops, the trouble such as dredging pipe ware card pause and water hammer takes place easily for the conventional cleaning type dredging pipe ware carries out flowing back operation, very big influence gas field normal production and operation.
Based on the background, the related scholars propose a construction process for foam drainage in a pipe, namely, a certain amount of foaming agent is injected into the pipe, a pipe cleaner is provided with an overflowing hole, gas is injected from the front end of the pipe cleaner, and liquid added with the foaming agent is converted into foam to be conveyed forwards. When the pipe cleaner meets a low-lying section with a large amount of accumulated liquid, the gas is continuously sprayed out, and the accumulated liquid at the front end of the pipe cleaner is gradually discharged.
For the construction of the foam liquid drainage of the pipe cleaner, a mode of forming an overflowing hole on a pipe cleaner framework or a leather cup is adopted in the past, and gas at the rear end of the pipe cleaner is sprayed forwards and mixed with liquid to generate foam. In addition, patent CN2013201672736 discloses a hydrocyclone pig for removing accumulated liquid in a gas collecting pipeline, which is provided with a plurality of inclined jet nozzles at the front end of the pig.
The pressure difference between the front end and the rear end of the pipe cleaner is mainly determined by the contact force between the leather cup and the pipeline, and when the pipe cleaner runs in the relatively clean pipeline, the pressure difference between the front end and the rear end is usually within the range of 0.3-0.7 bar. Under the less condition of hydrops volume, the promotion dredging pipe ware that rear end gas can relax and front end hydrops move forward. Due to the compressibility of the gas in the pipe, the running states of the pipe cleaner and the liquid at the front end of the pipe cleaner are complex and changeable, and speed fluctuation and differential pressure fluctuation can be generated. In this way, the pig front end liquid easily flows back from the flowthrough hole at the top position to the pig rear end. On the other hand, because the pressure difference between the front end and the rear end of the pipe cleaner is relatively small, the overflowing hole/jet hole at the bottom of the pipe cleaner is difficult to work normally under the action of the hydrostatic pressure of accumulated liquid at the front end, and the air flow mainly flows to the front end from the overflowing hole/jet hole at the top of the pipe cleaner; therefore, the foaming effect is poor in the foam discharging operation process, and the scouring effect on the bottom of the pipeline is poor.
Patents CN2019106639929, CN2019106639312, CN2019106639327, etc. disclose directional jet type pipe cleaners, which open jet holes at the lower part of the front end of the pipe cleaner by the tumbler principle, so as to achieve the purpose of directional jetting toward the lower part of the pipeline. However, in the scheme, the jet flow channel is always kept in an open state, and the jet flow effect can be directly influenced by the blockage of the jet flow hole at the front end of the pipe cleaner under the complicated working condition in the pipe; moreover, because the flow channel is always opened, when the pipe cleaner is blocked, the pressure difference is difficult to effectively establish to drive the pipe cleaner to cross the obstacle.
Patent US 20040194809Al discloses a pig with a one-way valve, in which the jet channel and the pressure transmission channel of the one-way valve are identical, and the jet nozzle is located in the centre of the front end of the pig. Patent US 20040194809Al presents the following problems: (1) under the complicated working condition in the pipe, the opening action of the one-way valve can be directly influenced by the blockage of the jet hole at the front end of the pipe cleaner; (2) because the pressure acquisition channel of the one-way valve and the jet flow channel are combined into a whole, the jet flow channel cannot be designed independently, and is too small; (3) when the one-way valve is in an open state, the pressure difference of the front end and the rear end of the one-way valve can be changed due to the throttling effect of the jet flow channel and the nozzle, so that the problems of vibration of the one-way valve, irregular jet flow and the like are caused.
Based on the background, the pressure acquisition and the efflux of efflux dredging pipe ware are separately designed for pipeline foam flowing back construction, solve the medium backward flow problem, solve the problem that check valve formula dredging pipe ware forced induction passageway blockked up easily, runner undersize, throttle effect cause check valve vibration and efflux irregularity scheduling problem, have realistic meaning and application prospect.
Disclosure of Invention
The purpose of the invention is as follows: the medium backflow problem of the jet flow pipe cleaner with the normally open flow channel is solved, and the problems that a pressure induction channel of the one-way valve type jet flow pipe cleaner is easy to block, the flow channel is too small, the one-way valve vibrates and jet flow is irregular due to the throttling effect are solved.
The technical scheme is as follows.
The utility model provides a forced induction dredging pipe device of hydraulic pressure helping hand, includes leather cup, barrel, cylinder body, big piston, little piston, piston rod, support, conical head, guide arm, its characterized in that:
the whole barrel is cylindrical with a base, and leather cups are arranged at two ends of the barrel; a cylinder body is arranged in the cylinder body, is cylindrical and is arranged in the middle of the cylinder body base; the cylinder body is internally provided with steps and is provided with a large piston and a small piston, the outer diameter of the large piston is larger than that of the small piston, the large piston is arranged at one end far away from the base of the cylinder body, and the small piston is arranged at one end close to the base of the cylinder body; hydraulic oil is filled between the large piston and the small piston;
the small piston is connected with a piston rod, the piston rod penetrates through a central hole of the cylinder base and extends out to the front end, and the diameter of the central hole of the cylinder base is larger than that of the piston rod;
a support is arranged at the extending end of the piston rod, and a conical head is arranged at the edge of the support; the conical head is close to the base of the cylinder, and the base of the cylinder is provided with a through hole at the position corresponding to the conical head;
the guide rod penetrates through the base of the cylinder body, one end of the guide rod is installed on the support, the other end of the guide rod is provided with the retaining ring, and a spring is arranged between the retaining ring and the base of the cylinder body.
At least 2 conical heads are uniformly arranged in the circumferential direction of the single guide rod.
The front end and the rear end of the pipe cleaner are provided with hooks which are positioned in the center of the pipe cleaner.
The cylinder cover is integrally annular, and the cylinder cover is arranged at the end part of the cylinder body on one side of the large piston.
The whole support is disc-shaped.
The invention has the beneficial effects that: (1) the jet flow channel is opened through pressure, and the pressure is adjustable; (2) the pressure sensing channel and the jet flow channel are separately designed and do not interfere with each other, so that the problems of jitter, jet flow irregularity and the like caused by pressure fluctuation of the one-way valve due to the throttling effect of the nozzle are avoided; (3) the pressure sensing channel and the jet flow channel are separated, and the sizes of the pressure sensing channel and the jet flow channel can be flexibly designed, so that the sectional area of the jet flow channel can be increased, and the jet flow can be increased; (4) through the cooperation of the large oil cylinder and the small oil cylinder, the large oil cylinder drives the small oil cylinder to work, the pressure difference at the front end and the rear end of the pipe cleaner can be amplified, and the pressure induction of the pipe cleaner is more sensitive.
Drawings
FIG. 1 is a schematic diagram of the present invention.
In the figure: 1. hooking; 2. a baffle plate; 3. a partition plate; 4. a leather cup; 5. a cylinder body; 6. a cylinder cover; 7. a large piston; 8. a cylinder body; 9. a baffle ring; 10. a guide bar; 11. a spring; 12. a small piston; 13. a piston rod; 14. a conical head; 15. and (4) a support.
Detailed Description
The present invention is not limited to the following embodiments, and the specific embodiments may be determined according to the technical solution and the practical situation of the present invention. The positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1 in the specification.
The pipe cleaning device is arranged in a pipeline, and a pipe cleaner is in contact with the pipeline through a leather cup 4. The whole barrel 5 is cylindrical with a base, leather cups 4 are arranged at two ends of the barrel 5 and are fixed by baffle plates 2, and the baffle plates 2 are connected with the barrel 5 through bolts; a partition plate 3 is arranged between the adjacent leather cups 4.
The base of the cylinder body 5 is arranged at the front end, a cylinder body 8 is arranged in the cylinder body 5, and the cylinder body 8 is cylindrical and is arranged in the middle of the base of the cylinder body 5.
The inside step that sets up of cylinder 8 and install big piston 7 and little piston 12, the external diameter of big piston 7 is greater than the external diameter of little piston 12, and big piston 7 is installed in the one end of keeping away from barrel 5 base, and little piston 12 is installed in the one end of being close to barrel 5 base.
The cylinder cover 6 is circular, and the cylinder cover 6 is arranged at the end part of the cylinder body 8 at one side of the large piston 7.
The small piston 12 is connected with a piston rod 13, and the piston rod 13 penetrates through the base of the cylinder 5 and extends outwards. A through hole is arranged in the middle of the base of the cylinder 5, and the diameter of the through hole is larger than that of the piston rod 13, so that the pressure of the front end of the cleaning pig is introduced into the front end of the small piston 12. Hydraulic oil is filled between the large piston 7 and the small piston 12.
A support 15 is arranged at the extending end of the piston rod 13, the whole support 15 is in a disc shape, and a conical head 14 is arranged at the edge position of the support 15; support 15 is installed to conical head 14 one end, and the other end sets up to the toper, and conical head 14 is close to the base of barrel 5, and the base of barrel 5 sets up the through-hole in conical head 14 corresponding position.
The whole support 15 is in a disc shape, a guide rod 10 is arranged at the edge of the support 15, the guide rod 10 penetrates through the base of the cylinder 5, and a through hole is formed in the base of the cylinder 5 at a position corresponding to the guide rod 10; the end of the guide rod 10 near the side of the cylinder 5 is tapered. The guide rod 10 serves as a guide to keep the bit 14 aligned with its through-flow aperture.
One end of the guide rod 10 is arranged on the support 15, the other end of the guide rod is provided with a baffle ring 9, the baffle ring 9 is of a circular structure, and the baffle ring 9 is in threaded connection with the guide rod 10. A spring 11 is arranged between the stop ring 9 and the base of the barrel 5 so that the conical head 14 is kept closed during normal operation of the pig.
At least 2 conical heads 14 are uniformly arranged in the circumferential direction of the single guide rod 10.
For making things convenient for the pig front and back end to connect other parts, perhaps make things convenient for pig send and receive ball construction, set up couple 1 in the pig front and back end, couple 1 is located pig central point and puts, and couple 1 is connected to on the baffle 2 of pig front and back end.
The principle of the invention is as follows: when the resistance of the pipe cleaner is increased, the front end and the rear end of the pipe cleaner drive pressure difference to be increased, the large piston 7 drives the small piston 12 to move rightwards under the pushing of the pressure difference, and the small piston 12 drives the conical head 14 to move rightwards through the piston rod 13 and the support 15, so that an overflowing channel controlled by the conical head 14 is opened. The gas at the back end of the pipe cleaner is sprayed out from the position of the conical head 14 to play a foaming role. The guide rod 10 serves as a guide to keep the cone head 14 aligned with its through-flow aperture. Therefore, the pressure sensing channel and the jet flow channel are separately designed and do not interfere with each other, and the problems of jitter, jet flow irregularity and the like caused by pressure fluctuation of the one-way valve due to the throttling effect of the nozzle are avoided; the sizes of the two can be flexibly designed, the pressure guiding hole is reliable, and meanwhile, the sectional area of a jet flow channel is favorably improved, and the jet flow is improved; the large piston 7 drives the small piston 12 to move, the driving pressure is small, and the pressure induction of the pig is sensitive.
Claims (5)
1. The utility model provides a forced induction dredging pipe device of hydraulic pressure helping hand, includes leather cup, barrel, cylinder body, big piston, little piston, piston rod, support, conical head, guide arm, its characterized in that:
the whole barrel is cylindrical with a base, and leather cups are arranged at two ends of the barrel; a cylinder body is arranged in the cylinder body, is cylindrical and is arranged in the middle of the cylinder body base;
the cylinder body is internally provided with steps and is provided with a large piston and a small piston, the outer diameter of the large piston is larger than that of the small piston, the large piston is arranged at one end far away from the base of the cylinder body, and the small piston is arranged at one end close to the base of the cylinder body; hydraulic oil is filled between the large piston and the small piston;
the small piston is connected with a piston rod, the piston rod penetrates through a central hole of the cylinder base and extends out to the front end, and the diameter of the central hole of the cylinder base is larger than that of the piston rod;
a support is arranged at the extending end of the piston rod, and a conical head is arranged at the edge of the support; the conical head is close to the base of the cylinder, and the base of the cylinder is provided with a through hole at the position corresponding to the conical head;
the guide rod penetrates through the base of the cylinder body, one end of the guide rod is installed on the support, the other end of the guide rod is provided with the retaining ring, and a spring is arranged between the retaining ring and the base of the cylinder body.
2. The hydraulically assisted pressure sensing pig device of claim 1, characterized in that: at least 2 conical heads are uniformly arranged in the circumferential direction of the single guide rod.
3. The hydraulically assisted pressure sensing pig device of claim 1, further comprising a hanger, characterized in that: the front end and the rear end of the pipe cleaner are provided with hooks which are positioned in the center of the pipe cleaner.
4. A hydraulically assisted pressure sensing pig apparatus according to claim 1, wherein: the cylinder cover is integrally in a ring shape, and the cylinder cover is installed at the end part of the cylinder body on one side of the large piston.
5. The hydraulically assisted pressure sensing pig device of claim 1, characterized in that: the whole support is disc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210534785.5A CN114769241A (en) | 2022-05-17 | 2022-05-17 | Hydraulic-assisted pressure induction pipe cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210534785.5A CN114769241A (en) | 2022-05-17 | 2022-05-17 | Hydraulic-assisted pressure induction pipe cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114769241A true CN114769241A (en) | 2022-07-22 |
Family
ID=82436526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210534785.5A Pending CN114769241A (en) | 2022-05-17 | 2022-05-17 | Hydraulic-assisted pressure induction pipe cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114769241A (en) |
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2022
- 2022-05-17 CN CN202210534785.5A patent/CN114769241A/en active Pending
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