CN105804230B - A kind of drainage pipeline cleaning method - Google Patents
A kind of drainage pipeline cleaning method Download PDFInfo
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- CN105804230B CN105804230B CN201610150489.XA CN201610150489A CN105804230B CN 105804230 B CN105804230 B CN 105804230B CN 201610150489 A CN201610150489 A CN 201610150489A CN 105804230 B CN105804230 B CN 105804230B
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- Prior art keywords
- drainage pipeline
- high pressure
- nitrogen
- pressure nitrogen
- cryogenic high
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
Abstract
The present invention relates to a kind of drainage pipeline cleaning methods, the first cryogenic high pressure nitrogen is injected into the drainage pipeline by elder generation, freeze grain will be formed after the Residual water progress Quick freezing inside the drainage pipeline, and it falls down, at this moment the impurity inside drainage pipeline and scale also freeze, and can moisture content be reduced, so that impurity and scale be effectively reduced to the adsorption capacity of drainage pipeline inner wall；Further by injecting the second cryogenic high pressure nitrogen into the drainage pipeline, the jelly grain is driven by the impact force of the second cryogenic high pressure nitrogen, so that power friction occurs between the jelly grain and the drainage pipeline inside, impurity and scale inside the drainage pipeline are effectively removed and are discharged by final realize, cleaning efficiency is high, and cleaning effect is good；Further, since nitrogen is inert gas, corrosion drainage pipeline will not be avoided forming drainage pipeline the generation for damaging, while also capable of effectively avoiding explosion, safety is higher.
Description
Technical field
The invention belongs to the technical fields of drainage pipeline cleaning, and in particular to a kind of drainage pipeline cleaning method.
Background technique
Drainage pipeline, which has, delivers water into the channeling in specified place, be generally arranged at building interior, underground or
Inside wall.After long-time service, oxidation corrosion can occur for wall surface inside drainage pipeline, and various foreign matters are attached in pipeline wall surface
Portion, above-mentioned foreign matter, which will form solidification, as time increases makes pipe passage narrow, and not only influences drain function, it is also possible to because
The increase of the mobile pressure of water flow leads to the rupture of drainage pipeline.
Currently, predominantly following several by more common method: (1) by injecting cleaning solution inside drainage pipeline
Or high pressure water, to remove foreign matter inside pipeline；(2) by injecting high pressure water and compressed air inside drainage pipeline, and by
Waterpower and compression are fluctuated to remove foreign matter inside pipeline；(3) it by injecting washer or rotating wash bowl inside drainage pipeline, and borrows
Waterpower or Fluid pressure is helped to move washer or rotating wash bowl inside comb, it is final to realize the clear of pipeline inside foreign matter
It removes.However, the above method is for when cleaning to Large Diameter Pipeline, long range drainage pipeline, elimination efficiency to be lower, and more past
The end of drainage pipeline, cleaning effect are poorer.
Summary of the invention
In order to solve the above problems existing in the present technology, the present invention provides a kind of cleaning efficiency height, cleaning effect are good
Drainage pipeline cleaning method.
The technical scheme adopted by the invention is as follows:
A kind of drainage pipeline cleaning method, includes the following steps:
(1) the first cryogenic high pressure nitrogen is injected into the drainage pipeline, so that the remaining inside the drainage pipeline
Moisture freezes, and is formed and freezes grain；
(2) the second cryogenic high pressure nitrogen is injected into the drainage pipeline, is driven using the second cryogenic high pressure nitrogen
Impurity inside the drainage pipeline is removed and is discharged by the jelly grain.
The pressure of first high pressure low temperature nitrogen described in step (1) is 8-12kgf/cm2, the first high pressure low temperature nitrogen
Temperature be -191~-193 DEG C.
The injection length of the first high pressure low temperature nitrogen is 10-15s.
The pressure of second high pressure low temperature nitrogen described in step (2) is 30-40kgf/cm2, the first high pressure low temperature nitrogen
The temperature of gas is -191~-193 DEG C.
The injection length of the second high pressure low temperature nitrogen is 12-20s.
In step (1), water is also injected while the first cryogenic high pressure nitrogen is injected into the drainage pipeline.
The water is first subjected to decentralized processing and forms dispersion droplet or dispersing water flow, then is injected.
First the first cryogenic high pressure nitrogen be thoroughly mixed to form with the dispersion droplet or dispersing water flow compound
Cleaning system, then the composite cleaning system is injected into the drainage pipeline.
The ratio between injected slurry volume of the first cryogenic high pressure nitrogen and the water is 90-99:1-10.
In step (2), the second cryogenic high pressure nitrogen is repeatedly injected 2-3 times, and each injection length is 12-20s.
The invention has the benefit that
(1) drainage pipeline cleaning method of the present invention injects the first low temperature height by elder generation into the drainage pipeline
Nitrogen is pressed, jelly grain is formed after the Residual water inside the drainage pipeline is carried out Quick freezing, and fall down, at this moment arranges
Impurity and scale inside waterpipe also freeze, and can moisture content be reduced, so that impurity and scale be effectively reduced
To the adsorption capacity of drainage pipeline inner wall；Further by injecting the second cryogenic high pressure nitrogen into the drainage pipeline, by institute
The impact force for stating the second cryogenic high pressure nitrogen drives the jelly grain, so that occurring between the jelly grain and the drainage pipeline inside
Impurity and scale inside the drainage pipeline are effectively removed and are discharged by power friction, final realize, cleaning efficiency is high, clearly
It is good to wash effect；Data show, using the method for the invention to using 12 years drainage pipelines below to clean after, impurity is clear
Except rate is up to 99% or more, after using the drainage pipeline of 12-22 to clean, impurity clearance rate can also reach 75-85%,
To absolutely prove the method for the invention cleaning effect with higher；Further, since nitrogen is inert gas, it will not be to corruption
Drainage pipeline is lost, avoids forming drainage pipeline the generation for damaging, while also capable of effectively avoiding explosion, ambient enviroment will not be made
At pollution, safety is higher.
(2) drainage pipeline cleaning method of the present invention, by limit the pressure of the first high pressure low temperature nitrogen as
8-12kgf/cm2, the pressure of the second high pressure low temperature nitrogen is 30-40kgf/cm2, the pressure of the first high pressure low temperature nitrogen
Power is less than the pressure of the second high pressure low temperature nitrogen, thus will be in the drainage pipeline first with the first high pressure low temperature nitrogen
The Residual water in portion forms jelly grain after carrying out Quick freezing, and falls down, and recycles the second high pressure low temperature nitrogen of bigger pressure
After gas drives the impurity inside the jelly grain and drainage pipeline that power friction occurs, impurity in pipeline effectively remove side by side
Out, cleaning efficiency is higher, and cleaning effect is more preferable.
(3) drainage pipeline cleaning method of the present invention injects the first cryogenic high pressure nitrogen into the drainage pipeline
While also injection dispersion droplet or dispersing water flow, and the first cryogenic high pressure nitrogen and the dispersion droplet or disperse water
Stream is first sufficiently mixed is passed through the drainage pipeline again, to form more jelly grains, is conducive to further increase the jelly
Grain the drainage pipeline inside between frictional force, it is ensured that by inside drainage pipeline impurity or scale carry out efficiently remove simultaneously
Discharge.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.
Embodiment 1
The present embodiment provides a kind of drainage pipeline cleaning method, the service life of the drainage pipeline is 8 years, the cleaning side
Method includes the following steps:
(1) into the drainage pipeline, injection pressure is 8kgf/cm2, temperature be -191 DEG C of the first cryogenic high pressure nitrogen
10s is formed so that Quick freezing occurs for the Residual water inside the drainage pipeline and is frozen grain；
(2) into the drainage pipeline, injection pressure is 30kgf/cm2, temperature be -191 DEG C of the second cryogenic high pressure nitrogen
12s drives the jelly grain that the impurity inside the drainage pipeline is removed and is discharged using the second cryogenic high pressure nitrogen, miscellaneous
Matter clearance rate is up to 99%.
Embodiment 2
The present embodiment provides a kind of drainage pipeline cleaning method, the service life of the drainage pipeline is 14 years, the cleaning
Method includes the following steps:
(1) passing through nitrogen flow in pipes and filling pipe respectively for pressure is 12kgf/cm2, temperature be -193 DEG C first
Cryogenic high pressure nitrogen and water inject drainage pipeline together, wherein the ratio between the first cryogenic high pressure nitrogen and the injected slurry volume of water
For 90:10；Injection length is 10s, so that the water of Residual water and injection inside the drainage pipeline occurs rapidly to freeze
Knot, forms more jelly grain；
(2) into the drainage pipeline, injection pressure is 40kgf/cm2, temperature be -193 DEG C of the second cryogenic high pressure nitrogen
20s drives the jelly grain that the impurity inside the drainage pipeline is removed and is discharged using the second cryogenic high pressure nitrogen, miscellaneous
Matter clearance rate is up to 75%.
Embodiment 3
The present embodiment provides a kind of drainage pipeline cleaning method, the service life of the drainage pipeline is 22 years, the cleaning
Method includes the following steps:
(1) water is first subjected to decentralized processing and forms dispersion droplet or dispersing water flow, then by the dispersion droplet or disperse water
Stream is 10kgf/cm with pressure2, temperature be that -192 DEG C of the first cryogenic high pressure nitrogen is sufficiently mixed, form composite cleaning body
System；Wherein, the ratio between injected slurry volume of the first cryogenic high pressure nitrogen and water is 99:1；
The composite cleaning system is injected into the drainage pipeline again later, injection length 12s, so that described
The dispersion droplet or disperse water of Residual water and injection inside drainage pipeline freeze, and form more jelly grain；
(2) first into the drainage pipeline, first time injection pressure is 35kgf/cm2, temperature be -192 DEG C of the second low temperature
High pressure nitrogen 16s, then second of injection pressure is 35kgf/cm into the drainage pipeline2, temperature be -192 DEG C second low
Warm high pressure nitrogen 18s drives the jelly grain that the impurity inside the drainage pipeline is clear using the second cryogenic high pressure nitrogen
It removes and is discharged, impurity clearance rate is up to 85%.
Embodiment 4
The present embodiment provides a kind of drainage pipeline cleaning method, the service life of the drainage pipeline is 10 years, the cleaning
Method includes the following steps:
(1) water is first subjected to decentralized processing and forms dispersion droplet or dispersing water flow, then by the dispersion droplet or disperse water
Stream is 12kgf/cm with pressure2, temperature be that -191 DEG C of the first cryogenic high pressure nitrogen is sufficiently mixed, form composite cleaning body
System；Wherein, the ratio between injected slurry volume of the first cryogenic high pressure nitrogen and water is 99:5；
The composite cleaning system is injected into the drainage pipeline again later, injection length 12s, so that described
The dispersion droplet or disperse water of Residual water and injection inside drainage pipeline freeze, and form more jelly grain；
(2) first into the drainage pipeline, first time injection pressure is 32kgf/cm2, temperature be -191 DEG C of the second low temperature
High pressure nitrogen 12s, then second of injection pressure is 40kgf/cm into the drainage pipeline2, temperature be -193 DEG C second low
Warm high pressure nitrogen 16s, finally into the drainage pipeline, third time injection pressure is 38kgf/cm2, temperature is -192 DEG C the
Two cryogenic high pressure nitrogen 20s, to drive the jelly grain will be inside the drainage pipeline using the second cryogenic high pressure nitrogen
Impurity efficiently removed and be discharged, impurity clearance rate is up to 99.5%.
Embodiment 5
The present embodiment provides a kind of drainage pipeline cleaning method, the service life of the drainage pipeline is 12 years, the cleaning
Method includes the following steps:
(1) water is first subjected to decentralized processing and forms dispersion droplet or dispersing water flow, then by the dispersion droplet or disperse water
Stream is 12kgf/cm with pressure2, temperature be that -191 DEG C of the first cryogenic high pressure nitrogen is sufficiently mixed, form composite cleaning body
System；Wherein, the ratio between injected slurry volume of the first cryogenic high pressure nitrogen and water is 99:5；
The composite cleaning system is injected into the drainage pipeline again later, injection length 12s, so that described
The dispersion droplet or disperse water of Residual water and injection inside drainage pipeline freeze, and form more jelly grain；
(2) first into the drainage pipeline, first time injection pressure is 32kgf/cm2, temperature be -191 DEG C of the second low temperature
High pressure nitrogen 12s, then second of injection pressure is 40kgf/cm into the drainage pipeline2, temperature be -193 DEG C second low
Warm high pressure nitrogen 16s, finally into the drainage pipeline, third time injection pressure is 38kgf/cm2, temperature is -192 DEG C the
Two cryogenic high pressure nitrogen 20s, to drive the jelly grain will be inside the drainage pipeline using the second cryogenic high pressure nitrogen
Impurity efficiently removed and be discharged, impurity clearance rate is up to 99.3%.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is all that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (1)
1. a kind of drainage pipeline cleaning method, which comprises the steps of:
(1) water is first subjected to decentralized processing and forms dispersion droplet or dispersing water flow, then by the dispersion droplet or dispersing water flow and
Pressure is 12kgf/cm2, temperature be that -191 DEG C of the first cryogenic high pressure nitrogen is sufficiently mixed, form composite cleaning system；
Wherein, the ratio between injected slurry volume of the first cryogenic high pressure nitrogen and water is 99:5；
The composite cleaning system is injected into the drainage pipeline again later, injection length 12s, so that the draining
The dispersion droplet or disperse water of Residual water and injection inside pipeline freeze, and form more jelly grain；
(2) first into the drainage pipeline, first time injection pressure is 32kgf/cm2, temperature be -191 DEG C of the second cryogenic high pressure
Nitrogen 12s, then second of injection pressure is 40kgf/cm into the drainage pipeline2, the second low temperature that temperature is -193 DEG C it is high
Nitrogen 16s is pressed, finally third time injection pressure is 38kgf/cm into the drainage pipeline2, temperature be -192 DEG C second low
Warm high pressure nitrogen 20s, to drive the jelly grain will be miscellaneous inside the drainage pipeline using the second cryogenic high pressure nitrogen
Matter is efficiently removed and is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610150489.XA CN105804230B (en) | 2016-03-16 | 2016-03-16 | A kind of drainage pipeline cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610150489.XA CN105804230B (en) | 2016-03-16 | 2016-03-16 | A kind of drainage pipeline cleaning method |
Publications (2)
| Publication Number | Publication Date |
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| CN105804230A CN105804230A (en) | 2016-07-27 |
| CN105804230B true CN105804230B (en) | 2019-02-05 |
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| CN201610150489.XA Expired - Fee Related CN105804230B (en) | 2016-03-16 | 2016-03-16 | A kind of drainage pipeline cleaning method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113482717B (en) * | 2021-07-13 | 2022-04-22 | 重庆交通大学 | Device for removing crystals on inner wall of pipeline in tunnel by using freezing method and using method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58102674A (en) * | 1981-12-04 | 1983-06-18 | Ishikawajima Harima Heavy Ind Co Ltd | Harmful matter removal method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2632548B1 (en) * | 1988-06-09 | 1990-10-12 | Geophysique Etudes Detartrages | METHOD AND APPARATUS FOR CLEARING CENTRAL HEATING INSTALLATIONS |
| JP2001300458A (en) * | 2000-04-20 | 2001-10-30 | Yutaka Kiko Kk | Pipe cleaning device and cleaning method |
| CN204470226U (en) * | 2013-07-22 | 2015-07-15 | 刘子俊 | A kind of pipeline cleaning |
| CN104226649A (en) * | 2014-07-28 | 2014-12-24 | 宁国市大泉机械有限公司 | Method of cleaning inner wall of pipeline |
| CN204074650U (en) * | 2014-09-18 | 2015-01-07 | 赵美仪 | A kind of high-efficiency frequency conversion pulse pipe cleaning machine |
| CN104496730B (en) * | 2014-11-27 | 2016-09-14 | 葛洲坝易普力重庆力能民爆股份有限公司 | Pipeline automatic cleaning system and cleaning method |
| CN105312285B (en) * | 2015-07-06 | 2018-01-26 | 上海天净管业有限公司 | Water supply pipe pulse cleaning equipment |
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2016
- 2016-03-16 CN CN201610150489.XA patent/CN105804230B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58102674A (en) * | 1981-12-04 | 1983-06-18 | Ishikawajima Harima Heavy Ind Co Ltd | Harmful matter removal method |
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