CN108080371B - Pipe cleaning shunt head and cleaning method thereof - Google Patents
Pipe cleaning shunt head and cleaning method thereof Download PDFInfo
- Publication number
- CN108080371B CN108080371B CN201711407372.6A CN201711407372A CN108080371B CN 108080371 B CN108080371 B CN 108080371B CN 201711407372 A CN201711407372 A CN 201711407372A CN 108080371 B CN108080371 B CN 108080371B
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- cleaning
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- shunt head
- pipe
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- 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
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to a tube cleaning shunt head and a cleaning method thereof, wherein the front end of the shunt head is provided with a threading hole connected with a flexible connecting wire, the middle part of the shunt head is provided with a front cavitation bubble generation sheet and a rear cavitation bubble generation sheet which are arranged at intervals, the front end of the shunt head is provided with a front gradual change head from the front cavitation bubble generation sheet to the front cavitation bubble generation sheet, a cavitation bubble generation cavity is formed between the front cavitation bubble generation sheet and the rear cavitation bubble generation sheet, a rear gradual change head is formed between the annular surface of the cavitation bubble generation cavity and the rear cavitation bubble generation sheet, and a jet flow gap capable of generating annular cavitation jet flow is formed between the front cavitation bubble generation sheet, the rear cavitation bubble generation sheet and the inner wall of a tube to be cleaned. The cleaning method comprises the following steps: the split head stretches into one end of the pipe fitting to be cleaned, high-pressure fluid is introduced into the end of the pipe fitting to be cleaned, the split head is pulled by the flexible connecting wire to move in the same direction or in the opposite direction relative to the high-pressure fluid along the pipe fitting to be cleaned, the high-pressure fluid passes through the jet gap to form secondary annular cavitation jet flow, the inner wall of the pipe fitting to be cleaned is cleaned, the cleaning is environment-friendly, the cost is low, the efficiency is high, and the effect is good.
Description
Technical Field
The invention relates to the field of pipe cleaning, in particular to a pipe cleaning shunt head and a cleaning method thereof.
Background
The small-caliber stainless steel precise pipe is subjected to bright solid solution treatment after cold rolling, the rolling oil remained on the surface of the pipe wall is required to be cleaned before the bright treatment, if the pipe wall grease is not cleaned, the quality of the steel pipe can be directly affected, and the residual CI-corrosion steel pipe can be caused when the pipe wall grease is severe (because the rolling oil contains paraffin components). Ultrasonic tank cleaning or pickling (nitric acid + hydrofluoric acid) soaking is generally used, but ultrasonic waves and pickling only have a cleaning effect on the outer wall of the pipe, and are basically ineffective on the inner wall of the elongated pipe, so that the inner wall of the pipe is further treated later. The existing cleaning mode of the inner wall of the pipe generally adopts manual beating of sponge balls, felt or white cloth and the like, and grease is removed through the wiping friction effect of the sponge balls. Because cold rolling oil becomes very viscous at high temperature in the rolling process, after strong rolling, the microscopic gaps of the pipe wall can be embedded with more superfine powder and a layer of complete oil film, so that the sponge or white cloth is dipped with volatile solvents such as acetone and the like for further cleaning. Each pipe is different according to the length and the pipe diameter, the number of the sponge balls is usually required to be large, but the cleanliness of the inner wall cannot be guaranteed, so that acid washing is required to be reused before or after heat treatment to eliminate the corrosion of residues on the pipe wall. Therefore, the industry is in urgent need of a cleaning technology which has high cleaning rate, low cost, automation and environmental protection, and can completely replace the manual and high pollution pickling process.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a pipe cleaning shunt head and a cleaning method thereof for solving the technical problems of low cleaning efficiency, high cost, poor automation and poor environmental protection of the existing pipe inner wall. The aim is achieved by the following technical scheme.
A pipe cleaning shunt head is suitable for cleaning the inner wall of a pipe, one end of the shunt head is connected with a flexible connecting wire, a jet gap is formed between the shunt head and the inner wall of a pipe fitting to be cleaned, and the jet gap is defined as annular cavitation jet flow when high-pressure fluid passes through the jet gap. The structure is characterized in that the front end of the shunt head is provided with a threading hole connected with the flexible connecting wire, the middle part of the shunt head is provided with two annular cavitation bubble generating sheets arranged at intervals, the two annular cavitation bubble generating sheets are respectively a front cavitation bubble generating sheet and a rear cavitation bubble generating sheet, the front end of the shunt head to the front cavitation bubble generating sheet form a front gradual change head with gradually increased outer diameter, an annular concave cavitation bubble generating cavity is formed between the front cavitation bubble generating sheet and the rear cavitation bubble generating sheet, a rear gradual change head with gradually increased outer diameter is formed between the annular surface of the cavitation bubble generating cavity and the rear cavitation bubble generating sheet, and jet flow gaps are formed between the front cavitation bubble generating sheet and the inner wall of a pipe fitting to be cleaned and between the rear cavitation bubble generating sheet and the inner wall of the pipe fitting to be cleaned.
The cavitation jet flow means that high-pressure fluid is conveyed to the flow dividing head through the pipe fitting to be cleaned, when the walking speed of the flow dividing head is smaller than that of the fluid, the fluid at the front end of the flow dividing head forms high-pressure fluid, the fluid is tightly pressed against the pipe wall of the pipe fitting to be cleaned through the flow dividing head, and the fluid instantaneously enters a low-pressure area at the rear end of the flow dividing head to form pressure dip. When the local pressure of the fluid is lower than the saturated vapor pressure, not only the air (usually 2%) dissolved in the water can escape, but also the water starts to gasify, a plurality of cavitation bubbles (cavities and cavitation bubbles) consisting of the air and the fluid are formed in the fluid, sound waves are formed when the fluid carries the cavitation bubbles to strike the pipe wall at high frequency, ultrasonic waves are formed when the frequency is higher than 20000Hz, the ultrasonic waves generate cavitation bubbles to strike the pipe wall again, instantaneous local high temperature and high pressure are generated when the cavitation bubbles collapse, and strong shock waves and microjet with the speed of more than 100m/s are formed, so that the cleaning of the inner wall of the pipe fitting to be cleaned is realized. The design of the shunt head not only can generate secondary cavitation jet flow, but also can be favorable for generating cavitation bubbles on the inner wall of the pipe fitting to be cleaned by arranging the cavitation bubble generation cavity, and greatly improves the cleaning efficiency and cleaning effect of the inner wall of the pipe.
In the pipe cleaning shunt head, the outer diameter of the front cavitation bubble generating piece is larger than that of the rear cavitation bubble generating piece, and the peripheral surface of the edge of the cavitation bubble generating piece is an arc surface. In the pipe cleaning shunt head, the cavity width of the cavitation bubble generation cavity is smaller than 1.5 times of the maximum outer diameter size of the shunt head.
Through the structure, cavitation bubbles are generated, and the cavitation jet cleaning effect is improved.
In the pipe cleaning shunt head, the threading holes are parallel holes penetrating through the front end and the rear end of the shunt head.
In the pipe cleaning shunt head, the threading hole is a T-shaped hole.
The threading hole of the shunt head is designed, so that flexible connecting wires can be conveniently threaded and bound, and the stability and reliability of the work of pulling the shunt head after binding are improved.
In the pipe cleaning shunt head, the shunt head is made of any one of hard nylon, polyoxymethylene, polyurethane, polyvinyl chloride and ultrahigh molecular polyethylene. Through this structure, guarantee the wearability of reposition of redundant personnel head itself, be difficult for again damaging simultaneously and wait to wash the pipe fitting inner wall.
In the pipe cleaning shunt head, the flexible connecting wire is a plurality of braided fiber wires. Through this structure, improve flexible connecting wire's tensile strength, and be difficult for self to tie up the winding, improve the reliability of pulling reposition of redundant personnel head work.
The cleaning method of the pipe cleaning shunt head comprises the following steps: the flow dividing head stretches into one end of the pipe fitting to be cleaned, high-pressure fluid is introduced into the end of the pipe fitting to be cleaned, the flexible connecting wire pulls the flow dividing head to move in the same direction or in the opposite direction relative to the high-pressure fluid along the pipe fitting to be cleaned, and when the flow dividing head moves in the same direction as the high-pressure fluid, the advancing speed of the flow dividing head is smaller than the flow speed of the high-pressure fluid; the high-pressure fluid passes through two jet gaps among the front cavitation generation sheet and the rear cavitation generation sheet of the shunt head and the inner wall of the pipe fitting to be cleaned to form secondary annular cavitation jet, and the annular cavitation jet is completed on the whole section of the inner wall of the pipe fitting to be cleaned to clean the inner wall of the pipe fitting to be cleaned.
The high-pressure fluid is clear water, degreasing fluid and pickling solution, the viscosity of the high-pressure fluid is close to that of water, and the temperature of the high-pressure fluid is 10-45 ℃. Through this high-pressure fluid setting, can improve the production of cavitation bubble, improve cavitation jet's effect. In the cleaning method, the shunt head reciprocates along the inner wall of the pipe to be cleaned under the pulling action of the flexible connecting wire and the pushing action of high-pressure fluid, so that the cleaning effect of the inner wall of the pipe is further improved.
The invention has the advantages that: the pipe has the advantages of simple integral structure, low manufacturing and production cost, convenient operation and use, low pressure requirement on high-pressure fluid conveying, high cleaning efficiency and good effect, is particularly suitable for cleaning the inner wall of a pipe with firm dirt adhesion and a small caliber (the pipe diameter is less than 25 mm) with a rough pipe wall, and is suitable for large-scale industrialized cleaning.
Drawings
FIG. 1 is a schematic diagram of a shunt head cleaning implementation of the present invention.
FIG. 2 is a schematic diagram of a shunt head according to the present invention.
Fig. 3 is a left-hand structural schematic diagram of fig. 2.
Fig. 4 is a schematic view of an improved structure of a threading hole of a first embodiment of the shunt head of the present invention.
Fig. 5 is a left-hand structural schematic diagram of fig. 4.
Fig. 6 is a schematic diagram of a second embodiment of the shunt head of the present invention.
Fig. 7 is a left-hand structural schematic diagram of fig. 6.
Fig. 8 is a schematic view of a third embodiment of the shunt head of the present invention.
Fig. 9 is a left-hand structural schematic diagram of fig. 8.
Fig. 10 is a schematic diagram of a shunt head solution of the present invention.
Fig. 11 is a left-hand structural schematic diagram of fig. 10.
The serial numbers and names in the figures are: 1. the device comprises a shunt head, 101, a threading hole, 102, a front gradual change head, 103, a front cavitation bubble generation sheet, 104, a cavitation bubble generation cavity, 105, a rear cavitation bubble generation sheet, 106, a rear gradual change head, 2, a flexible connecting wire, 3 and a pipe fitting to be cleaned.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1-5, the pipe cleaning and splitting head is suitable for cleaning the inner wall of a pipe, the splitting head 1 is made of any one of hard nylon, polyoxymethylene, polyurethane, polyvinyl chloride (PVC) and ultra-high polymer polyethylene (HPE), the front end of the splitting head is provided with a threading hole 101 connected with a flexible connecting wire 2, and the threading hole is a parallel hole penetrating through the front end and the rear end of the splitting head, as shown in fig. 2 and 3; or a T-shaped aperture as shown in fig. 4 and 5. The shunt head is connected with a flexible connecting wire through the threading hole, the flexible connecting wire is a plurality of strands of braided fiber wires, and the flexible connecting wire and the shunt head keep coaxial. Two annular cavitation bubble generating sheets which are arranged at intervals are arranged in the middle of the shunt head and are respectively a front cavitation bubble generating sheet 103 and a rear cavitation bubble generating sheet 105, and an inward concave arc-shaped front gradual change head 102 with the outer diameter gradually becoming larger is formed from the front end of the shunt head to the front cavitation bubble generating sheet; an annular concave cavity 104 is formed between the front cavity generating piece and the rear cavity generating piece, and an inward concave arc-shaped rear gradual change head 106 with gradually enlarged outer diameter is formed between the annular surface of the cavity and the rear cavity generating piece. Jet flow gaps are formed between the front cavitation bubble generating sheet and the inner wall of the pipe fitting 3 to be cleaned and between the rear cavitation bubble generating sheet and the inner wall of the pipe fitting to be cleaned, and the outer diameter size of the front cavitation bubble generating sheet is larger than that of the rear cavitation bubble generating sheet. In practical implementation, when the diameter of the pipe fitting to be cleaned is smaller than 25mm, the peripheral surfaces of the edges of the front cavitation bubble generating sheet and the rear cavitation bubble generating sheet are designed to be arc surfaces, the jet flow gap between the front cavitation bubble generating sheet and the inner wall of the pipe fitting to be cleaned is controlled to be 0.01-1mm, the outer diameter of the rear cavitation bubble generating sheet is smaller than the outer diameter of the front cavitation bubble generating sheet by 1-5mm, and the cavity width of the cavitation bubble generating cavity (namely the distance between the front cavitation bubble generating sheet and the rear cavitation bubble generating sheet) is designed to be larger than 10mm but smaller than 1.5 times of the maximum outer diameter of the shunt head.
In addition to the above-mentioned flow dividing head structure, the present invention can also be designed in the structural style shown in fig. 6-11, i.e. fig. 6 and 7 are two ball head structures, fig. 8 and 9 are two double cones, and fig. 10 and 11 are two cones. These structures can realize the functions of the shunt head of the invention.
Taking a steel pipe with a cleaning pipe diameter of 12mm as an example, the cleaning method of the present invention is described as follows. The processing technology of the steel pipe to be cleaned is cold rolling, the inner wall of the pipe is not degreased, and rolling oil remains, and the rolling oil contains chlorinated paraffin and engine oil components. According to the steel pipe to be cleaned, selecting the parameters of the shunt head as follows: the jet gap between the front cavitation generation sheet 103 and the inner wall of the steel pipe is 0.1mm, the jet gap between the rear cavitation generation sheet 105 and the inner wall of the steel pipe is 1.1mm, and the width of the cavitation generation cavity 104 is 10mm. The parameters of the high-pressure cleaning liquid are as follows: the degreasing liquid with the temperature of 20-45 ℃ and the viscosity close to water is selected. The cleaning process comprises the following steps: the shunt head 1 stretches into one end of the steel pipe to be cleaned, high-pressure cleaning liquid is introduced into the end of the steel pipe to be cleaned, the flow speed of the high-pressure cleaning liquid is 5m/s, the pressure of the high-pressure cleaning liquid is 1.5MPa, the shunt head is pushed to move in the same direction along the steel pipe to be cleaned, the shunt head is pulled through the flexible connecting wire 2 to control the advancing speed to be 3m/min, the high-pressure cleaning liquid passes through two jet gaps among a front cavitation generation sheet, a rear cavitation generation sheet and the inner wall of the steel pipe to be cleaned of the shunt head, a secondary annular cavitation jet is formed, and annular cavitation jet is completed through the whole section of the inner wall of the steel pipe to be cleaned, so that the inner wall of the steel pipe is cleaned. The flow dividing head can also reciprocate along the inner wall of the steel pipe to be cleaned under the pulling action of the flexible connecting wire and the pushing action of the high-pressure cleaning liquid, and when the flow dividing head moves reversely relative to the high-pressure cleaning liquid, the reverse advancing speed of the flow dividing head is controlled to be 6m/min. The detection result of the inner wall of the steel pipe cleaned by the cleaning method through wiping the inner wall of the pipe by dust-free white cloth shows that no visible pollutant exists, and the cleaning effect is obvious.
The above description is intended to illustrate the technical means of the present invention, and not to limit the technical scope of the present invention. The pressure and speed of the high-pressure fluid, the running speed of the shunt head, the jet flow gap between the shunt head and the inner wall of the pipe and other preferred parameters or the matching use of the parameters, which are obtained by combining the prior common knowledge to the skilled person or carrying out limited tests under the technical teaching of the invention, also fall into the protection scope of the invention.
Claims (9)
1. The cleaning method of the pipe cleaning shunt head is suitable for cleaning the inner wall of a pipe, one end of the shunt head is connected with a flexible connecting wire (2), a jet gap is formed between the shunt head and the inner wall of a pipe fitting (3) to be cleaned, and the jet gap is defined as annular cavitation jet flow formed when high-pressure fluid passes through the jet gap; the front end of the shunt head (1) is provided with a threading hole (101) connected with the flexible connecting line, the middle part of the shunt head is provided with two annular cavitation generation sheets which are arranged at intervals, the two annular cavitation generation sheets are respectively a front cavitation generation sheet (103) and a rear cavitation generation sheet (105), the front end of the shunt head to the front cavitation generation sheet form a front gradual change head (102) with gradually increased outer diameter, an annular concave cavitation generation cavity (104) is formed between the front cavitation generation sheet and the rear cavitation generation sheet, a rear gradual change head (106) with gradually increased outer diameter is formed between the annular surface of the cavitation generation cavity and the rear cavitation generation sheet, and jet flow gaps are formed between the front cavitation generation sheet and the inner wall of a pipe fitting (3) to be cleaned and between the rear cavitation generation sheet and the inner wall of the pipe fitting to be cleaned; the cleaning method is characterized by comprising the following steps: the flow dividing head (1) stretches into one end of the pipe fitting (3) to be cleaned, high-pressure fluid is introduced into the end of the pipe fitting to be cleaned, the flexible connecting wire (2) pulls the flow dividing head to move in the same direction or in the opposite direction relative to the high-pressure fluid along the pipe fitting to be cleaned, and when the flow dividing head moves in the same direction with the high-pressure fluid, the advancing speed of the flow dividing head is smaller than the flow speed of the high-pressure fluid; the high-pressure fluid passes through two jet gaps among the front cavitation generation sheet (103) and the rear cavitation generation sheet (105) of the shunt head and the inner wall of the pipe fitting to be cleaned to form secondary annular cavitation jet, and the annular cavitation jet is completed on the whole section of the inner wall of the pipe fitting to be cleaned to clean the inner wall of the pipe fitting to be cleaned.
2. The cleaning method of the pipe cleaning shunt head according to claim 1, characterized in that the outer diameter size of the front cavitation generation piece (103) is larger than the outer diameter size of the rear cavitation generation piece (105), and the peripheral surface of the cavitation generation piece is an arc surface.
3. The method of cleaning a pipe cleaning shunt head according to claim 1, characterized in that the cavity width of said cavitation generation cavity (104) is less than 1.5 times the maximum outer diameter dimension of said shunt head (1).
4. The method for cleaning the pipe cleaning shunt head according to claim 1, characterized in that the threading holes (101) are parallel holes penetrating through the front and rear ends of the shunt head (1).
5. The method for cleaning a pipe cleaning shunt head according to claim 1, characterized in that said threading hole (101) is a T-shaped hole.
6. The method for cleaning the pipe cleaning shunt head according to claim 1, characterized in that the shunt head (1) is made of any one of hard nylon, polyoxymethylene, polyurethane, polyvinyl chloride and ultra-high molecular polyethylene.
7. A method of cleaning a tube cleaning shunt head according to claim 1, characterized in that said flexible connection wire (2) is a multi-strand braided fibre wire.
8. The method for cleaning a pipe cleaning shunt head according to claim 1, characterized in that the high-pressure fluid is clear water, degreasing liquid, pickling liquid, and the viscosity is close to that of water, and the temperature of the high-pressure fluid is 10-45 ℃.
9. A method of cleaning a pipe cleaning shunt head according to claim 1, characterized in that said shunt head (1) is reciprocated along the inner wall of the pipe (3) to be cleaned under the pulling action of said flexible connection line (2) and under the pushing action of high pressure fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711407372.6A CN108080371B (en) | 2017-12-22 | 2017-12-22 | Pipe cleaning shunt head and cleaning method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711407372.6A CN108080371B (en) | 2017-12-22 | 2017-12-22 | Pipe cleaning shunt head and cleaning method thereof |
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| Publication Number | Publication Date |
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| CN108080371A CN108080371A (en) | 2018-05-29 |
| CN108080371B true CN108080371B (en) | 2023-10-20 |
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| CN201711407372.6A Active CN108080371B (en) | 2017-12-22 | 2017-12-22 | Pipe cleaning shunt head and cleaning method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111977773A (en) * | 2019-05-22 | 2020-11-24 | 刘进国 | Cavitation crusher and using method thereof |
| CN110665916B (en) * | 2019-09-27 | 2021-07-30 | 山东科技大学 | Pipeline vacuole cleaning equipment |
| CN110624908B (en) * | 2019-09-27 | 2021-07-30 | 山东科技大学 | Method for cleaning petroleum pipeline vacuole |
| CN111121294B (en) * | 2019-12-26 | 2021-12-10 | 北京拓首能源科技股份有限公司 | Oiling sleeve of coking heating furnace |
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| Publication number | Publication date |
|---|---|
| CN108080371A (en) | 2018-05-29 |
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