CN114769242A - Jet type pipe cleaning device with front rotary valve - Google Patents
Jet type pipe cleaning device with front rotary valve Download PDFInfo
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- CN114769242A CN114769242A CN202210534798.2A CN202210534798A CN114769242A CN 114769242 A CN114769242 A CN 114769242A CN 202210534798 A CN202210534798 A CN 202210534798A CN 114769242 A CN114769242 A CN 114769242A
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- rotary valve
- cylinder body
- piston
- base
- cylinder
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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
-
- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a jet-type pipe cleaning device with a front rotary valve, which is used for pipe cleaning construction of pipeline drainage, foam drainage and the like. The technical scheme is as follows: a cylinder body is arranged in the tube cleaner barrel, a piston is arranged in the cylinder body, a rotary valve is arranged outside the cylinder body, and the piston slides longitudinally through a limiting pin; the piston is provided with a spiral groove, the cylinder body is provided with an annular open slot, and a pin in the spiral groove penetrates through the annular open slot and is fixed on the rotary valve; the front end of the cylinder body is provided with a nozzle, and the cylinder body base and the rotary valve are provided with through holes at the position of the nozzle. The piston is adopted to drive the rotary valve to rotate, the rotary valve directly controls the opening and closing of the jet flow channel, and the control unit is simple and reliable in flow passage from the control unit to the nozzle; the piston movement is converted into the rotation of the rotary valve through the spiral groove, the differential pressure of the front end and the rear end of the pipe cleaner is amplified through the spiral groove, and a pressure sensing system is more sensitive.
Description
Technical Field
The invention relates to a jet-type pipe cleaning device with a front rotary valve, which is used for pipe cleaning construction such as pipeline drainage, foam drainage and the like.
Background
Gas well water discharge is inevitable in natural gas exploitation, and even if separation is carried out through station equipment, a natural gas conveying pipeline still faces the problem of liquid accumulation. 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 district section gradually, causes the jam of half pipe, full pipe, reduces pipeline transport capacity, can block up 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. Through long-distance abrasion, the pipe cleaner leather cup is difficult to achieve a good sealing effect, and the backflow of front-end liquid 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 above background, the related scholars have proposed a construction process for foam drainage in a pipe, i.e. a certain amount of foaming agent is injected into the pipe, a pipe cleaner is provided with an overflowing hole, gas is ejected from the front end of the pipe cleaner, and the 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 foam liquid drainage of a 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 condition that the effusion quantity is less, the back end gas can easily push the pipe cleaner and the front end effusion to move forward. Due to the compressibility of 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 foaming and discharging operation process, and the scouring effect on the bottom of the pipeline is poor.
Patents CN2019106639929, CN2019106639312, CN2019106639327 and the like disclose directional jet type pipe cleaning devices, wherein a jet hole at the lower part of the front end of the pipe cleaning device is opened by a tumbler principle, so as to achieve the purpose of jetting directionally towards the lower part of a 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; and, because the runner is opened all the time, when the dredging pipe ware blocks up again, it is difficult to effectively establish differential pressure drive dredging pipe ware and hinder more.
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 has 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 the jet flow channel 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 problems that a jet flow pipe cleaner medium backflow problem caused by the fact that a flow channel is normally open and a pressure induction channel of a one-way valve type jet flow pipe cleaner is prone to blockage, the flow channel is small, and vibration and jet flow irregularity of the one-way valve are caused by a throttling effect are solved.
The technical scheme is as follows.
The utility model provides a jet type dredging pipe device of leading rotary valve, includes backplate, leather cup, barrel, rotary valve, cylinder body, piston, spring, nozzle, its characterized in that:
the whole barrel is cylindrical with a base, and leather cups are arranged at two ends of the barrel; a pressure guide hole is formed in the middle of the cylinder base; the front end of the cylinder base is provided with a nozzle, and a through hole is arranged at the mounting position of the nozzle;
a cylinder body is arranged in the cylinder body, is cylindrical and is arranged in the middle of the cylinder body base;
the rotary valve comprises a cylindrical main body, and the main body is sleeved outside the cylinder body; the rotary valve also comprises a bottom plate which is disc-shaped and is attached to the base of the cylinder body; a through hole is formed in the position, where the through hole is formed, of the base plate of the rotary valve on the cylinder base;
one end of the rotary valve, which is far away from the bottom plate, is contacted with a rear baffle, and the rear baffle is connected with the barrel; the rear baffle is provided with an overflowing hole which is communicated with the inner cavity of the cylinder body;
a piston is arranged in the cylinder body, and a spring is arranged between the piston and the cylinder base;
the piston is provided with a longitudinal sliding groove, and the cylinder body is provided with a limiting pin at the position of the longitudinal sliding groove of the piston; the piston is provided with a spiral groove, and the cylinder body is provided with an annular open slot at a position corresponding to the spiral groove; the pin penetrates through the annular open slot, one end of the pin is fixed on the rotary valve, and the other end of the pin is embedded into the spiral groove of the piston.
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.
At least 2 nozzles are uniformly arranged in the circumferential direction of the cylinder.
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) the piston is adopted to drive the rotary valve to rotate, the rotary valve directly controls the opening and closing of the jet flow channel, and the control unit is simple and reliable in flowing to the nozzle; (5) the piston movement is converted into the rotation of the rotary valve through the spiral groove, the differential pressure of the front end and the rear end of the pipe cleaner is amplified through the spiral groove, and a pressure sensing system is more sensitive.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view taken along line B-B of fig. 1.
In the figure: 1. hooking; 2. a tailgate; 3. a partition plate; 4. a leather cup; 5. a cylinder body; 6. rotating the valve; 7. a cylinder body; 8. a piston; 9. a spring; 10. a front baffle; 11. and (4) a nozzle.
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 actual 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 device is arranged in a pipeline and 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 the front end and the rear end of the barrel 5 and are respectively fixed by a front baffle 10 and a rear baffle 2, and the front baffle 10 and the rear baffle 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 barrel 5 is arranged at the front end, a cylinder body 7 is arranged in the barrel 5, and the cylinder body 7 is cylindrical and is arranged in the middle of the base of the barrel 5. The middle position of the base of the cylinder body 5 is provided with a pressure guiding hole.
The rotary valve 6 comprises a cylindrical main body, and the main body of the rotary valve 6 is sleeved outside the cylinder body 7 and matched with the outer cylindrical surface of the cylinder body 7; the rotary valve 6 further comprises a bottom plate, the bottom plate is disc-shaped and is connected with the main body of the rotary valve 6, and the bottom plate is attached to the base of the barrel 5. The front end of the base of the cylinder 5 is provided with a nozzle 11, and at least 2 nozzles 11 are uniformly arranged in the circumferential direction of the cylinder 5. The cylinder 5 is provided with a through hole at the installation position of the nozzle 11, and the through hole is communicated with the nozzle 11; the through hole is arranged at the through hole of the base of the barrel body 5 on the bottom plate of the rotary valve 6, and after the bottom plate of the rotary valve 6 is aligned with the circumferential direction of the base of the barrel body 5, the through hole of the bottom plate of the rotary valve 6 is communicated with the through hole of the base of the barrel body 5.
The rear baffle 2 is arranged at the rear end of the device, one end of the rotary valve 6, which is far away from the bottom plate, is in contact with the rear baffle 2, the rear baffle 2 is in bolted connection with the barrel 5, and the rear baffle 2 axially limits the rotary valve 6 to limit the axial movement of the rotary valve 6. The rear baffle plate 2 is provided with an overflowing hole which is communicated with the inner cavity of the cylinder body 5.
A piston 8 is arranged in the cylinder body 7, the piston 8 is integrally a cylinder, and a spring 9 is arranged between the piston 8 and the base of the cylinder body 5. When the pig differential pressure increases, the thrust of the spring 9 is overcome, and then the piston 8 is driven to move forwards.
The piston 8 is provided with a longitudinal sliding groove, the cylinder body 7 is provided with a limiting pin at the position of the longitudinal sliding groove of the piston 8, and the limiting pin limits the rotation of the piston 8 and keeps the linear motion of the piston 8.
The piston 8 is provided with a spiral groove, and the cylinder body 7 is provided with an annular open slot at the position corresponding to the spiral groove; and a pin penetrates through the annular open slot, one end of the pin is fixed on the rotary valve 6, and the other end of the pin is embedded into the spiral groove of the piston 8. In this way, the linear motion of the piston 8 is converted into the rotary motion of the rotary valve 6 through the matching of the spiral groove of the piston 8, the annular opening groove of the cylinder 7 and the pin.
For making things convenient for the pig to connect other parts, perhaps make things convenient for the construction of pig send and receive ball, set up couple 1 at the pig front end, couple 1 is located pig central point and puts, and couple 1 is connected to on 5 bases of barrel.
The principle of the invention is as follows: the dredging pipe ware moves in natural gas line, and intraductal hydrops gathering is at the dredging pipe ware front end, and when dredging pipe ware resistance increase, its front and back end drive pressure differential increases, and 8 both sides of piston receive dredging pipe ware pressure differential effect. When the pressure difference between the front end and the rear end of the pipe cleaner is large enough, the pressure difference of the piston 8 overcomes the acting force of the spring 9 and moves rightwards, the ring groove of the piston 8 drives the rotary valve 6 to rotate through the pin, so that the through hole of the bottom plate at the front end of the rotary valve 6 is opened, and the through hole is communicated with the nozzle 11; the gas at the back end of the cleaning pig is sprayed out from the position of the nozzle 11 to generate foaming action. Therefore, the pressure sensing channel and the jet flow channel are separately designed and do not interfere with each other, and the problems that the one-way valve shakes, jet flow irregularity and the like due to the fact that the one-way valve fluctuates due to the throttling effect of the nozzle 11 are avoided. The pressure sensing channel and the jet flow channel are separately arranged, the sizes of the pressure sensing channel and the jet flow channel can be flexibly designed, the pressure guiding hole is reliable, and meanwhile, the sectional area of the jet flow channel and the jet flow rate are improved; the rotary valve 6 is opened in a rotating mode, the structure is simple, and the anti-pollution capacity is high.
Claims (3)
1. The utility model provides a efflux formula dredging pipe device of leading rotary valve, includes backplate, leather cup, barrel, rotary valve, cylinder body, piston, spring, nozzle, its characterized in that:
the whole barrel is cylindrical with a base, and leather cups are arranged at two ends of the barrel; a pressure guide hole is formed in the middle of the cylinder base; a nozzle is arranged at the front end of the cylinder base, and a through hole is formed in the mounting position of the nozzle;
a cylinder body is arranged in the cylinder body, is cylindrical and is arranged in the middle of the cylinder body base;
the rotary valve comprises a cylindrical main body, and the main body is sleeved outside the cylinder body; the rotary valve also comprises a bottom plate which is disc-shaped and is attached to the base of the cylinder body; a through hole is formed in the position, where the through hole is formed, of the base plate of the rotary valve on the base of the cylinder body;
one end of the rotary valve, which is far away from the bottom plate, is contacted with a rear baffle, and the rear baffle is connected with the cylinder; the rear baffle is provided with an overflowing hole which is communicated with the inner cavity of the cylinder body;
a piston is arranged in the cylinder body, and a spring is arranged between the piston and the cylinder base;
the piston is provided with a longitudinal sliding groove, and the cylinder body is provided with a limiting pin at the position of the longitudinal sliding groove of the piston; the piston is provided with a spiral groove, and the cylinder body is provided with an annular open slot at a position corresponding to the spiral groove; the pin penetrates through the annular open slot, one end of the pin is fixed on the rotary valve, and the other end of the pin is embedded into the spiral groove of the piston.
2. The jet type pigging device of the front rotary valve according to claim 1, 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.
3. The jet type pigging device of the front rotary valve according to claim 1, characterized in that: at least 2 nozzles are uniformly arranged in the circumferential direction of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210534798.2A CN114769242A (en) | 2022-05-17 | 2022-05-17 | Jet type pipe cleaning device with front rotary valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210534798.2A CN114769242A (en) | 2022-05-17 | 2022-05-17 | Jet type pipe cleaning device with front rotary valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114769242A true CN114769242A (en) | 2022-07-22 |
Family
ID=82436961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210534798.2A Pending CN114769242A (en) | 2022-05-17 | 2022-05-17 | Jet type pipe cleaning device with front rotary valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114769242A (en) |
-
2022
- 2022-05-17 CN CN202210534798.2A patent/CN114769242A/en active Pending
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