CN114673250A - Method for dredging drainage pipeline by dry ice micro-explosion - Google Patents
Method for dredging drainage pipeline by dry ice micro-explosion Download PDFInfo
- Publication number
- CN114673250A CN114673250A CN202210415073.1A CN202210415073A CN114673250A CN 114673250 A CN114673250 A CN 114673250A CN 202210415073 A CN202210415073 A CN 202210415073A CN 114673250 A CN114673250 A CN 114673250A
- Authority
- CN
- China
- Prior art keywords
- dry ice
- pipeline
- cleaning machine
- micro
- explosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- E03F9/007—Devices providing a flushing surge
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Cleaning In General (AREA)
Abstract
The invention provides a method for dredging a drainage pipeline by dry ice micro-explosion, which comprises the following steps: step 1, assembling and connecting a dry ice cleaning machine: step 2, the dry ice cleaning machine is placed and walks in the pipeline: step 3, carrying out dry ice micro-explosion cleaning on the pipe section to be desilted: the dry ice cleaning machine is operated to walk to a position to be desilted through the ground console, the air compressor and the dry ice storage machine are started, so that dry ice particles enter the dry ice cleaning machine through the rubber hose, the dry ice particles are sprayed to the inner surface of the pipeline through a dry ice nozzle of the dry ice cleaning machine, the dry ice absorbs heat to generate micro explosion, and sludge is separated from the inner surface of the pipeline by utilizing the micro explosion force of the dry ice, so that the desilting purpose is achieved. And realized drainage pipe desilting automation, whole process all is operated on ground, and convenient operation need not artifical the well, has guaranteed workman's personal safety.
Description
Technical Field
The invention belongs to the technical field of municipal drainage pipeline dredging, and particularly relates to a method for dredging a drainage pipeline by adopting dry ice micro-explosion.
Background
The urban drainage pipeline system is an indispensable important municipal infrastructure of modern cities, and is also a backbone project for urban water pollution control, urban water drainage, waterlogging drainage and flood control. The drainage pipeline system is responsible for collecting and conveying domestic sewage, industrial wastewater and atmospheric precipitation generated in urban production and life, and timely and reliably discharges the collected domestic sewage, industrial wastewater and atmospheric precipitation, so that the urban area is protected from the sewage and the wastewater, and the road surface water accumulation during rainstorm is avoided, thereby providing a safe and comfortable production and living environment for people. In addition, the urban drainage pipeline system also enables the material circulation and the energy flow of the urban ecological system to be normally carried out, thereby maintaining the ecological balance and ensuring the sustainable development of the city. However, as the economy grows and the size of cities continues to expand, the deficiencies and problems of urban drainage pipe systems continue to emerge. If the pipeline silts up and blocks up the drainage that leads to is not smooth, not only influence resident's daily life, can disturb the normal rhythm of whole city moreover in serious time, make city production life unable normal clear.
However, at present, the main municipal drainage pipeline dredging methods at home and abroad comprise a high-pressure water jet dredging method, a winch mechanical dredging method, a water flushing dredging method, a dredging machine dredging method, a dredging ball, a storage-blocking flushing door and the like. The methods are designed for dredging of small-pipe-diameter drainage pipes, the dredging efficiency of large-scale drainage pipes is not high, and when some technologies are applied to large-pipe-diameter drainage pipes, the limitations of overhigh operation cost, insufficient dredging capacity, secondary pollution, incapability of adapting to complex terrain conditions and the like exist. And when the engineering waste slurry and the cement mortar are directly discharged into a drainage pipe network, the engineering waste slurry and the cement mortar are easy to react with other sludge to form compact scale accumulated at the bottom of a pipe culvert, and the scale is difficult to clean by using the traditional pipeline dredging method and equipment.
The micro-explosion technology uses dry ice as a medium to cause micro-explosion in the pipeline, and removes the sludge in the pipeline by using the micro-explosion without entering the pipeline manually. The principle of the method is that when dry ice particles are sprayed onto the surface of an object at a high speed, impact kinetic energy instantly gasifies the dry ice particles and absorbs a large amount of heat, violent heat exchange is generated on the cleaned surface to force the attachment to be quenched, shrunk and embrittled, the attachment and a substrate material have different expansion coefficients, the temperature difference between the surface layer and the inside of the attachment can damage the combination of the two materials, the instantaneous rapid shrinkage can tear the non-structural connection, meanwhile, the volume of the dry ice is suddenly increased by 800 times in the gasification process of thousands of seconds, so that 'micro explosion' is caused at an impact point, the attachment is effectively knocked down, the gasified dry ice is changed into carbon dioxide gas, no residue is left, and no waste is generated.
The technology is widely applied to the fields of tunnels, medicine, wooden products and the like. A large number of researches prove that the dry ice cleaning has little damage to the matrix, so that the dry ice cleaning is expected to be applied to the drainage pipeline dredging field.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for dredging a drainage pipeline by adopting dry ice micro-explosion, which can efficiently dredge sediments in the drainage pipeline, particularly compact cemented sediments accumulated at the bottom of a pipe culvert, does not need to go down a well manually and does not have secondary pollution.
In order to achieve the technical characteristics, the invention aims to realize that: a method for dredging a drainage pipeline by adopting dry ice micro-explosion comprises the following steps:
step 1, assembling and connecting a dry ice cleaning machine:
fixing a dry ice storage machine and an air compressor on an engineering truck, and respectively connecting an air outlet of the air compressor and an ice outlet of the dry ice storage machine with a solid-gas mixing chamber of a dry ice cleaning machine by using two rubber hoses;
putting the assembled dry ice cleaning machine into the pipeline to be desilted from the inspection well through a hoisting device;
step 3, dry ice micro-blasting cleaning of the pipe section to be desilted:
the dry ice cleaning machine is controlled to walk to a position to be desilted through the ground control console, the air compressor and the dry ice storage machine are started, so that dry ice particles enter the dry ice cleaning machine through the rubber hose, the dry ice particles are sprayed to the inner surface of a pipeline through a dry ice nozzle of the dry ice cleaning machine, the dry ice absorbs heat to generate micro explosion, and the sludge is separated from the inner surface of the pipeline by utilizing the micro explosion force of the dry ice, so that the aim of desilting is fulfilled.
The specific operation process of the step 1 is as follows:
step 1.1, before dry ice micro-explosion dredging, firstly, safely plugging a pipeline to be dredged, plugging the upper end of an upstream inspection well of the pipeline to be dredged by using a plugging air bag, and plugging the lower end of a downstream inspection well of a pipeline section to be dredged in order to prevent sediment from entering a downstream pipeline in the dredging process;
step 1.2, in order to improve the dredging effect, before the dry ice micro-explosion cleaning, firstly, a high-pressure water wheel is used for carrying out primary high-pressure cleaning on a pipeline to be dredged, sludge impurities which are easy to remove are firstly removed, and the previous cleaning procedure is more efficient and economical;
and step 1.3, fixing the dry ice storage machine and the air compressor on the engineering truck through bolts or welding, respectively connecting an air outlet of the air compressor and an ice outlet of the dry ice storage machine with a solid-gas mixing chamber of the dry ice cleaning machine through two rubber hoses, and finally connecting a control system of the dry ice cleaning machine into a signal receiving module of a control console of the engineering truck.
The engineering truck is provided with a control console for operating the dry ice cleaning machine; the dry ice storage machine and the air compressor are in rigid connection with the engineering truck.
The specific operation process of the step 2 is that the dry ice cleaning machine is arranged in the drainage pipeline to be desilted, and the dry ice cleaning machine can freely crawl in the drainage pipeline.
The dry ice cleaning machine is provided with a solid-gas mixing chamber, a dry ice nozzle and an automatic travelling device, can travel back and forth in the pipeline under the automatic travelling device, has certain climbing capacity and can cross over low obstacles; the dry ice nozzle can rotate around the axis of the dry ice cleaning machine under the reaction force, and 360-degree spraying is achieved.
The specific operation process of the step 3 is as follows:
step 3.1, placing the dry ice cleaning machine in a pipeline to be desilted, and operating the dry ice cleaning machine to move forward through a ground console to reach a part to be desilted;
3.2, starting an air compressor, enabling compressed air to enter a solid-gas mixing chamber of the dry ice cleaning machine through a rubber hose, and enabling the compressed air to be sprayed out through a dry ice nozzle and drive the dry ice nozzle to rotate;
3.3, opening an ice outlet valve of the dry ice storage machine, utilizing a compressed air hose to generate vacuum, sucking dry ice particles out of the dry ice storage machine, reaching a solid-gas mixing chamber, converging and accelerating in the solid-gas mixing chamber, then spraying out from a dry ice nozzle, and shooting to the surface of a pipeline to be cleaned;
step 3.4, operating the dry ice cleaning machine to advance uniformly at a low speed through the console, and ensuring that dry ice particles can uniformly cover the surface of the pipeline;
step 3.5, after the desilting is finished, firstly closing a valve of the dry ice storage machine, closing an air compressor after 2-3 minutes, and taking out the dry ice cleaning machine;
and 3.6, after the dry ice micro-explosion silt cleaning is finished, accumulating the cleaned sediments at the bottom of the pipe, flushing the sediments in the pipeline to a downstream inspection well by using a high-pressure water truck, and then discharging the sediments by using a sewage suction truck.
The invention has the following beneficial effects:
1. the drainage pipeline dredging method provided by the invention realizes the automation of drainage pipeline dredging, the whole process is operated on the ground, the operation is convenient, the manual operation of going into the well is not needed, and the personal safety of workers is ensured.
2. The dry ice micro-explosion drainage pipeline dredging technology and the dry ice micro-explosion drainage pipeline dredging method solve the defect that the traditional dredging capacity of cemented sediments by adopting water flow is insufficient. The dry ice micro-explosion dredging can effectively separate the cemented sludge from the surface of the pipeline, and the heat exchange between the gasification of the dry ice and the dirt reduces the temperature of the dirt, so that the dirt at low temperature is fragile and cannot be attached to an adjacent position. And the density of the carbon dioxide is greater than that of the air, and the sublimed dry ice sinks to prevent the dirt from flying randomly. Thus, the dry ice cleaning can achieve the purpose of thoroughly removing dirt. And the dry ice particles sprayed out through the nozzle have small volume and are easy to enter the pores, so that the dirt in the pores can be completely removed.
3. The dry ice micro-explosion drainage pipeline dredging technology and the dry ice micro-explosion drainage pipeline dredging method solve the defects that the traditional high-pressure water jet cleaning technology is easy to damage the pipeline wall in the cleaning process due to the fact that high-pressure water jet has large energy, and pipeline damage is caused particularly due to the fact that pipeline crack expansion is easy to cause in the cleaning process of old pipelines. The dry ice cleaning technology is widely applied to cleaning of precision instruments, and used dry ice particles are dry ice sand with soft texture and small particle size and cannot damage pipeline matrixes.
4. The dry ice micro-explosion drainage pipeline dredging technology and method solve the defect of secondary pollution in the traditional dredging mode, all dry ice working media are volatilized into harmless carbon dioxide gas in the dry ice micro-explosion dredging process, the only waste is the cleaned dirt, no harmful gas volatilization and harmful pollutant emission exist, and no harm is caused to the atmosphere and the environment, so the dry ice micro-explosion drainage pipeline dredging technology and method have a good environment-friendly effect.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a schematic diagram of a drainage pipeline dredging method by dry ice micro-explosion.
In the figure: 1-engineering truck, 2-dry ice storage machine, 3-air compressor, 4-rubber hose, 5-dry ice cleaning machine, 6-dry ice nozzle, 7-pipeline to be desilted, 8-sludge and 9-plugging air bag.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1, a method for dredging a drainage pipeline by dry ice micro-explosion comprises the following steps:
step 1, assembling and connecting a dry ice cleaning machine 5:
fixing a dry ice storage machine 2 and an air compressor 3 on an engineering truck 1, and respectively connecting an air outlet of the air compressor 3 and an ice outlet of the dry ice storage machine 2 with a solid-gas mixing chamber of a dry ice cleaning machine 5 by using two rubber hoses 4;
and 2, putting and walking the dry ice cleaning machine 5 in the pipeline:
the assembled dry ice cleaning machine 5 is placed into the pipeline 7 to be desilted from the inspection well through a hoisting device;
and 3, carrying out micro-explosion cleaning on dry ice of the pipe section 7 to be desilted:
the dry ice cleaning machine 5 is operated to walk to a position to be desilted through the ground console, the air compressor 3 and the dry ice storage machine 2 are started, so that dry ice particles enter the dry ice cleaning machine 5 through the rubber hose 4, the dry ice particles are sprayed to the inner surface of a pipeline through the dry ice nozzle 6 of the dry ice cleaning machine 5, the dry ice absorbs heat to generate micro explosion, and the sludge 8 is separated from the inner surface of the pipeline by utilizing the micro explosion force of the dry ice, so that the desilting purpose is achieved.
By adopting the method, the dredging automation of the drainage pipeline can be realized, the whole process is operated on the ground, the operation is convenient, the manual operation is not needed, and the personal safety of workers is ensured.
Further, the specific operation process of step 1 is as follows:
step 1.1, before dry ice micro-explosion dredging, firstly, safely plugging a pipeline 7 to be dredged, plugging the upper end of an upstream inspection well of the pipeline 7 to be dredged by using a plugging air bag 9, and plugging the lower end of a downstream inspection well of a pipeline section 7 to be dredged in order to prevent sediment from entering a downstream pipeline in the dredging process;
step 1.2, in order to improve the dredging effect, before the dry ice micro-explosion cleaning, firstly, a high-pressure water vehicle is used for carrying out primary high-pressure cleaning on a pipeline 7 to be dredged, sludge impurities which are easy to remove are firstly removed, and the previous cleaning procedure is more efficient and economical;
step 1.3, fixing the dry ice storage machine 2 and the air compressor 3 on the engineering truck 1 through bolts or welding, then respectively connecting an air outlet of the air compressor 3 and an ice outlet of the dry ice storage machine 2 with a solid-gas mixing chamber of the dry ice cleaning machine 5 through two rubber hoses 4, and finally connecting a control system of the dry ice cleaning machine 5 into a signal receiving module of a control console of the engineering truck 1.
Further, the engineering truck 1 is provided with a console for operating the dry ice cleaning machine 5; the dry ice storage machine 2 and the air compressor 3 are rigidly connected with the engineering truck 1. Through foretell control cabinet can realize whole automatic desilting process, improved desilting efficiency.
Further, the specific operation process of the step 2 is that the dry ice cleaning machine 5 is placed in the drainage pipeline to be desilted, and the dry ice cleaning machine 5 can freely crawl in the drainage pipeline. In the specific embodiment implementation process, the dry ice cleaning machine 5 is carried on the pipeline robot, and the dry ice cleaning machine 5 freely walks in the pipeline through the pipeline robot.
Further, a solid-gas mixing chamber, a dry ice nozzle 6 and an automatic travelling device are arranged on the dry ice cleaning machine 5, the dry ice cleaning machine 5 can travel back and forth in the pipeline under the automatic travelling device, has certain climbing capacity and can cross over low obstacles; the dry ice nozzle 6 can rotate around the axis of the dry ice cleaning machine under the reaction force and realizes 360-degree spraying. The pipeline dredging of the dry ice micro-explosion technology is realized through the dry ice cleaning machine 5.
Further, the specific operation process of step 3 is as follows:
step 3.1, placing the dry ice cleaning machine 5 in a pipeline 7 to be desilted, and operating the dry ice cleaning machine 5 to advance through a ground console to reach a part to be desilted;
3.2, starting an air compressor 3, enabling compressed air to enter a solid-gas mixing chamber of the dry ice cleaning machine through a rubber hose 4, and enabling the compressed air to be sprayed out through a dry ice nozzle 6 and drive the dry ice nozzle 6 to rotate;
3.3, opening an ice outlet valve of the dry ice storage machine 2, utilizing a compressed air hose to generate vacuum, sucking dry ice particles out of the dry ice storage machine 2, reaching a solid-gas mixing chamber, converging and accelerating in the solid-gas mixing chamber, then spraying out from a dry ice nozzle 6, and spraying to the surface of a pipeline to be cleaned;
step 3.4, operating the dry ice cleaning machine 5 through the console to uniformly advance at a low speed, and ensuring that dry ice particles can uniformly cover the surface of the pipeline;
step 3.5, after the desilting is finished, firstly closing a valve of the dry ice storage machine 2, closing the air compressor 3 after 2-3 minutes, and taking out the dry ice cleaning machine 5;
and 3.6, after the dry ice micro-explosion sludge cleaning is finished, accumulating the cleaned sludge at the bottom of the pipe, flushing the sludge in the pipeline to a downstream inspection well by using a high-pressure water truck, and then discharging the sludge by using a sewage suction truck.
Claims (6)
1. A method for dredging a drainage pipeline by adopting dry ice micro-explosion is characterized by comprising the following steps:
step 1, assembling and connecting a dry ice cleaning machine (5):
fixing a dry ice storage machine (2) and an air compressor (3) on a engineering truck (1), and respectively connecting an air outlet of the air compressor (3) and an ice outlet of the dry ice storage machine (2) with a solid-gas mixing chamber of a dry ice cleaning machine (5) by using two rubber hoses (4);
and 2, putting and walking the dry ice cleaning machine (5) in the pipeline:
the assembled dry ice cleaning machine (5) is placed into the pipeline (7) to be desilted from the underground of the inspection well through a hoisting device;
step 3, carrying out dry ice micro-blasting cleaning on the pipe section (7) to be desilted:
the dry ice cleaning machine (5) is operated to walk to a position to be desilted through the ground console, the air compressor (3) and the dry ice storage machine (2) are started, dry ice particles enter the dry ice cleaning machine (5) through the rubber hose (4), the dry ice particles are sprayed to the inner surface of the pipeline through the dry ice nozzle (6) of the dry ice cleaning machine (5), the dry ice absorbs heat to generate micro explosion, and the sludge (8) is separated from the inner surface of the pipeline by utilizing the micro explosion force of the dry ice, so that the desilting purpose is achieved.
2. The method for dredging drainage pipeline by dry ice micro-explosion according to claim 1, characterized in that: the specific operation process of the step 1 comprises the following steps:
step 1.1, before dry ice micro-explosion dredging, firstly, safely plugging a pipeline (7) to be dredged, plugging the upper end of an upstream inspection well of the pipeline (7) to be dredged by using a plugging air bag (9), and plugging the lower end of a downstream inspection well of a pipeline section (7) to be dredged in order to prevent sediment from entering a downstream pipeline in the dredging process;
step 1.2, in order to improve the dredging effect, before the dry ice micro-explosion cleaning, firstly, a pipeline (7) to be dredged is subjected to primary high-pressure cleaning by a high-pressure water wheel, sludge impurities which are easy to remove are firstly removed, and the previous cleaning procedure is more efficient and economical;
step 1.3, fixing the dry ice storage machine (2) and the air compressor (3) on the engineering truck (1) through bolts or welding, then respectively connecting an air outlet of the air compressor (3) and an ice outlet of the dry ice storage machine (2) with a solid-gas mixing chamber of the dry ice cleaning machine (5) through two rubber hoses (4), and finally connecting a control system of the dry ice cleaning machine (5) into a signal receiving module of a control console of the engineering truck (1).
3. The method for dredging drainage pipeline by dry ice micro-explosion as claimed in claim 2, characterized in that: the engineering truck (1) is provided with a control console for operating the dry ice cleaning machine (5); the dry ice storage machine (2), the air compressor (3) and the engineering truck (1) are in rigid connection.
4. The method for dredging drainage pipeline by dry ice micro-explosion according to claim 1, characterized in that: the specific operation process of the step 2 is that the dry ice cleaning machine (5) is placed in the drainage pipeline to be desilted, and the dry ice cleaning machine (5) can freely crawl in the drainage pipeline.
5. The method for dredging drainage pipeline by dry ice micro-explosion as claimed in claim 1 or 4, characterized in that: the dry ice cleaning machine (5) is provided with a solid-gas mixing chamber, a dry ice nozzle (6) and an automatic travelling device, and the dry ice cleaning machine (5) can travel back and forth in the pipeline under the automatic travelling device, has certain climbing capacity and can cross over low obstacles; the dry ice nozzle (6) can rotate around the axis of the dry ice cleaning machine under the reaction force and realizes 360-degree spraying.
6. The method for dredging drainage pipeline by dry ice micro-explosion according to claim 1, characterized in that: the specific operation process of the step 3 is as follows:
step 3.1, placing the dry ice cleaning machine (5) in a pipeline (7) to be desilted, and operating the dry ice cleaning machine (5) to move forward through a ground console to reach a part to be desilted;
step 3.2, starting the air compressor (3), enabling compressed air to enter a solid-gas mixing chamber of the dry ice cleaning machine through the rubber hose (4), and enabling the compressed air to be sprayed out through the dry ice nozzle (6) and drive the dry ice nozzle (6) to rotate;
3.3, opening an ice outlet valve of the dry ice storage machine (2), utilizing a compressed air hose to generate vacuum, sucking dry ice particles out of the dry ice storage machine (2), reaching a solid-gas mixing chamber, converging and accelerating in the solid-gas mixing chamber, then spraying out from a dry ice nozzle (6) and shooting to the surface of a pipeline to be cleaned;
step 3.4, operating the dry ice cleaning machine (5) to move forward at a uniform low speed through the console, and ensuring that dry ice particles can uniformly cover the surface of the pipeline;
step 3.5, after the desilting is finished, firstly closing a valve of the dry ice storage machine (2), closing the air compressor (3) after 2-3 minutes, and taking out the dry ice cleaning machine (5);
and 3.6, after the dry ice micro-explosion silt cleaning is finished, accumulating the cleaned sediments at the bottom of the pipe, flushing the sediments in the pipeline to a downstream inspection well by using a high-pressure water truck, and then discharging the sediments by using a sewage suction truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210415073.1A CN114673250A (en) | 2022-04-20 | 2022-04-20 | Method for dredging drainage pipeline by dry ice micro-explosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210415073.1A CN114673250A (en) | 2022-04-20 | 2022-04-20 | Method for dredging drainage pipeline by dry ice micro-explosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114673250A true CN114673250A (en) | 2022-06-28 |
Family
ID=82078688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210415073.1A Pending CN114673250A (en) | 2022-04-20 | 2022-04-20 | Method for dredging drainage pipeline by dry ice micro-explosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114673250A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841183A (en) * | 2012-09-24 | 2012-12-26 | 重庆大学 | Test method for tunnel washing by using dry ice |
| JP2014114653A (en) * | 2012-12-12 | 2014-06-26 | Kawase Co Ltd | Underground pipe construction apparatus utilizing robot |
| CN112517563A (en) * | 2020-11-16 | 2021-03-19 | 厦门理工学院 | Peristaltic dry ice cleaner in pipeline |
-
2022
- 2022-04-20 CN CN202210415073.1A patent/CN114673250A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841183A (en) * | 2012-09-24 | 2012-12-26 | 重庆大学 | Test method for tunnel washing by using dry ice |
| JP2014114653A (en) * | 2012-12-12 | 2014-06-26 | Kawase Co Ltd | Underground pipe construction apparatus utilizing robot |
| CN112517563A (en) * | 2020-11-16 | 2021-03-19 | 厦门理工学院 | Peristaltic dry ice cleaner in pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107433273B (en) | Harmless treatment method for waste crude oil pipeline | |
| CN209576116U (en) | A kind of housing construction dust-extraction unit | |
| CN105625494A (en) | Deepwater negative-pressure desilting system | |
| CN108193766A (en) | A kind of intelligence blends formula drainage dredging device | |
| CN106498997A (en) | A kind of collection excavates the Accrete clearing device and dredging method that collects and carry one | |
| CN104404992B (en) | A kind of multifunctional high pressure water jet Operation Van | |
| CN114673250A (en) | Method for dredging drainage pipeline by dry ice micro-explosion | |
| CN206613814U (en) | A kind of intelligent pipeline silt remover | |
| JP2003300030A (en) | Method and apparatus for removing attachment | |
| JP4510922B1 (en) | How to clean buried sewage pipes | |
| CN210946652U (en) | Environmental protection scarfing cinder device for civil engineering | |
| WO2023241325A1 (en) | Artificial tornado sharp-dagger composite trenchless multistage pipe cleaning device and pipe cleaning method thereof | |
| CN114700325B (en) | Dry ice micro-explosion dredging device and method for drainage pipeline | |
| CN108277876A (en) | A kind of Accrete clearing device and dredging vehicle of vehicle of removing contamination for existing municipal administration | |
| CN210066996U (en) | Underground pipe network water jet dredging construction device | |
| CN204199353U (en) | A kind of multifunctional high pressure water jet working vehicle | |
| CN211436915U (en) | Oil garbage separator | |
| CN206941790U (en) | A kind of multifunction combined suction sewage truck dirt sucking tube fast disassembly type is removed contamination a device | |
| CN206360005U (en) | It is a kind of to collect the Accrete clearing device for excavating and collecting with carrying one | |
| CN113417358A (en) | Railway tunnel sludge cleaning vehicle | |
| JP2002155527A (en) | Method of filling cavity with dry powder and granular material | |
| CN214994224U (en) | Dredging and dirt-sucking device for cleaning dirt-sucking vehicle | |
| CN108265815A (en) | Wall device and its construction method in a kind of radium-shine cleaning sewage conduct of high energy | |
| CN206512818U (en) | A kind of plastic stone rockery construction waste water drainage system device | |
| CN201506951U (en) | Deduster for traction type road shot-blasting machines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |