CN208011156U - A kind of municipal pipeline plugging device based on liquid nitrogen - Google Patents
A kind of municipal pipeline plugging device based on liquid nitrogen Download PDFInfo
- Publication number
- CN208011156U CN208011156U CN201820394728.0U CN201820394728U CN208011156U CN 208011156 U CN208011156 U CN 208011156U CN 201820394728 U CN201820394728 U CN 201820394728U CN 208011156 U CN208011156 U CN 208011156U
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- Prior art keywords
- liquid nitrogen
- freezing pipe
- municipal pipeline
- pipeline
- pipe
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Abstract
A kind of municipal pipeline plugging device based on liquid nitrogen disclosed by the utility model, including：One is set in the freezing pipe on the municipal pipeline for needing to block；It is set in the first, second sealed pipe fittings of the both sides on the municipal pipeline for needing to block and positioned at freezing pipe；One liquid nitrogen filling line, one end of liquid nitrogen filling line and the liquid nitrogen import of freezing pipe connect；One liquid nitrogen export pipeline, one end of liquid nitrogen export pipeline and the liquid nitrogen outlet of freezing pipe connect；One is mounted on the first gate valve of the liquid nitrogen import on liquid nitrogen filling line and close to freezing pipe；One is mounted on the second gate valve that the liquid nitrogen on liquid nitrogen export pipeline and close to freezing pipe exports；One is mounted on the flowmeter on liquid nitrogen filling line；And at least one temperature sensor for being arranged on freezing pipe.The utility model need not close total valve when being overhauled to municipal pipeline, and range of cutting off the water is small, and the time is short, reduce the possibility that water quality grade occurs, and almost without water loss.
Description
Technical field
The utility model is related to municipal pipeline plugging device technical field more particularly to a kind of municipal pipelines based on liquid nitrogen
Plugging device.
Background technology
Municipal pipeline is urban infrastructure construction important component, is to ensure urban water supply system normal operation
It is crucial.Therefore, ensure that pipeline quality is the requisite measure for realizing water resource normal transmission.However, pipeline is caused to need repairing master
There is underlying cause：
1, pipe workpiece quality is bad：If steel bar arrangement is improper, protective layer is unqualified etc. can make steel bar corrosion, may finally cause
Explosion；
2, joint quality is bad：When soil has differential settlement, make water pipe become one very long on mechanics (to may be
Several water pipes are longer) spandrel girder, then often generate circumferential fracture in small-bore water pipe, heavy caliber water pipe then be easy to cause major part
Place's fracture；
3, it constructs bad：A, machinery is backbreak, and pipe base is bad, and bottom of trench is uneven, keeps water pipe depression uneven, leads to joint failure
Even pipeline fractures；B, it is unreal to apply soil, pipeline discontinuity can be made, increase the possibility of pipeline burst；C, buttress back seat soil
It loosens, buttress is caused to generate displacement.If piping displacement is larger, easily make joint failure or disengagement, d, interface quality poor；Such as asbestos water
Mud interface beats leakiness, rubber incorrect or leakiness in place etc.；
4, Other Engineering influences：Feed ditch is nearby excavated, zanjon is excavated, piling, pile pulling, reduces the works such as low water level or soil-shifting
The work progress of journey may cause underground municipal pipeline to damage.
Therefore, the pipeline of existing defects needs are repaired, maintenance technique is to ensure pipeline integrity, extend pipeline
Service life ensures the normal requisite measure that supplies water.Common pipeline maintenance and replacement technology has following several：1, part is repaiied
It mends, sectional repair is mainly used for the reparation of structural destruction and crackle inside pipeline etc..Currently, carrying out sectional repair has very
More methods, mainly have Sealing Method, patch method, be hinged tube method, be partially completed method, grouting method, robot method etc.；2, tunneling boring is repaiied
Multiple, tunneling boring reparation is a kind of restorative procedure adding liner in the duct, and common tunneling boring restorative procedure has Internal Lining Method, twines
Winding, spray coating method.
However, before being repaired at present for pipeline, manifold valves are typically closed, achieve the purpose that cut off the water supply, still
Closing manifold valves can cause to cut off the water on a large scale and the time is long, and water loss is big, is caused to user and section water-supply quantity, hydraulic pressure
It influences, or even is also possible to increase water quality grade.Therefore, for this purpose, the applicant has carried out beneficial exploration and research, understanding is found
The certainly method of the above problem, technical solution described below generate in this background.
Utility model content
Technical problem to be solved in the utility model：A kind of city based on liquid nitrogen is provided in view of the deficiencies of the prior art
Political affairs duct closing type device so that total valve need not be closed when being overhauled to municipal pipeline, range of cutting off the water is small, and the time is short, drop
The possibility that low water quality grade occurs, and almost without water loss.
Following technical scheme may be used to realize in the technical issues of the utility model is solved：
A kind of municipal pipeline plugging device based on liquid nitrogen, including：
One is set in the freezing pipe on the municipal pipeline for needing to block, and the freezing pipe has a liquid nitrogen import and one
Liquid nitrogen exports, and being constituted between the municipal pipeline that the freezing pipe and needs block has one to be used for the liquid nitrogen import and liquid nitrogen
The liquid nitrogen of outlet injects cavity；
It is set in the both sides on the municipal pipeline for needing to block and positioned at the freezing pipe and connects with the freezing pipe
The first, second sealed pipe fittings connect；
One liquid nitrogen filling line, one end of the liquid nitrogen filling line are connect with the liquid nitrogen import of the freezing pipe,
The liquid nitrogen outlet of the other end and liquid nitrogen supply arrangement connects；
One liquid nitrogen export pipeline, one end of the liquid nitrogen export pipeline are connected with the liquid nitrogen outlet of the freezing pipe,
The other end is connect with the recycling import of the liquid nitrogen of liquid nitrogen supply arrangement；
One is mounted on the first gate valve of the liquid nitrogen import on the liquid nitrogen filling line and close to the freezing pipe；
One is mounted on the second gate valve that the liquid nitrogen on the liquid nitrogen export pipeline and close to the freezing pipe exports；
One is mounted on the flowmeter on the liquid nitrogen filling line；And
At least one temperature sensor for monitoring the freezing pipe temperature in real time being arranged on the freezing pipe.
In a preferred embodiment of the utility model, the freezing pipe is polytrifluorochloroethylene pipe fitting.
In a preferred embodiment of the utility model, the temperature sensor is two, is separately mounted to described cold
At the heteropleural diagonal position of frozen pipe part.
In a preferred embodiment of the utility model, the temperature sensor is thermal resistance temperature sensing sensor, sense
Warm range is between -200 DEG C~800 DEG C.
In a preferred embodiment of the utility model, first, second sealed pipe fittings and the municipal administration for needing to block
A sealing rubber layer is respectively arranged on the inner tube surface of tube contacts.
As a result of technical solution as above, the beneficial effects of the utility model are：
1) total valve need not be closed when the utility model overhauls municipal pipeline, range of cutting off the water is small, and the time is short, drop
The possibility that low water quality grade occurs, and almost without water loss；
2) the utility model is almost lossless to the pipeline physicochemical property and mechanical property of ductile iron pipe, steel pipe and HDPE pipes
Wound；
3) the utility model is simple to operation, at low cost, highly reliable；
4) the utility model can also be applied to that old facility is replaced, pipeline move and change, in the operations such as fire hydrant reconfiguration.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the scheme of installation of the utility model.
Specific implementation mode
In order to make the technical means, creative features, achievement of purpose, and effectiveness of the utility model be easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to Fig. 1 and Fig. 2, what is provided in figure is a kind of municipal pipeline plugging device based on liquid nitrogen, including freezing pipe
100, sealed pipe fittings 200a, 200b, liquid nitrogen filling line 300, liquid nitrogen export pipeline 400, gate valve 500a, 500b, flowmeter 600
And temperature sensor 700a, 700b.
Freezing pipe 100 is made of polytrifluorochloroethylene, and tolerable low temperature can reach -200 DEG C.Freezing pipe 100
It is set on the municipal pipeline 10 for needing to block, freezing pipe 100 has a liquid nitrogen import 110 and liquid nitrogen outlet 120, freezing
Pipe fitting 100 has one to be connected to for liquid nitrogen import 110 and liquid nitrogen to be exported 120 with needing to constitute between the municipal pipeline 10 that blocks
Liquid nitrogen injects cavity 130.Sealed pipe fittings 200a, 200b are set on the municipal pipeline 10 for needing to block and are located at freezing pipe
100 both sides are simultaneously connect with freezing pipe 100, are leaked when being used to prevent liquid nitrogen from injecting and are caused unnecessary waste.Sealing
Be respectively arranged on the inner tube surface that pipe fitting 200a, 200b are contacted with the municipal pipeline 10 that needs block a sealing rubber layer 210a,
210b, which further increases the sealing performances of pipe fitting.The caliber of freezing pipe 100 and sealed pipe fittings 200a, 200b can roots
Change according to the caliber for the municipal pipeline 10 for needing to block, the caliber scope of application is between DN100-DN1000.
One end of liquid nitrogen filling line 300 is connect with the liquid nitrogen import 110 of freezing pipe 100, and the other end is supplied with liquid nitrogen
Connection is exported to the liquid nitrogen of equipment (not shown).One end of liquid nitrogen export pipeline 400 is exported with the liquid nitrogen of freezing pipe 100
120 connections, the other end are connect with the recycling import of the liquid nitrogen of liquid nitrogen supply arrangement (not shown).Gate valve 500a is mounted on liquid
On nitrogen filling line 300 and close to the liquid nitrogen import 110 of freezing pipe 100.Gate valve 500b is mounted on liquid nitrogen export pipeline 400
And close to the liquid nitrogen of freezing pipe 100 outlet 120.Flowmeter 600 is mounted on liquid nitrogen filling line 300, it is preferable that flowmeter
600 use low temperature resistant flowmeter.Temperature sensor 700a, 700b, which are respectively separated, to be arranged on freezing pipe 100, is used in real time
Monitor the temperature of freezing pipe 100.In the present embodiment, temperature sensor 700a, 700b is separately mounted to freezing pipe 100
At heteropleural diagonal position, convenient for preferably monitoring the temperature of freezing pipe 100.Temperature sensor 700a, 700b are thermoelectricity resistance sense
Temperature sensor, temperature-sensitive range is between -200 DEG C~800 DEG C.
The municipal pipeline plugging device based on liquid nitrogen of the utility model use process is as follows：
Step 1, freezing pipe 100 and sealed pipe fittings 200a, 200b are installed on the municipal pipeline 10 for needing to block first
On, and liquid nitrogen filling line 300 and liquid nitrogen export pipeline 400 are connected to liquid nitrogen supply arrangement；
Step 2, gate valve 500a, the 500b being mounted on liquid nitrogen filling line 300 and liquid nitrogen export pipeline 400, control are adjusted
The output size of liquid nitrogen processed, until 600 value of flowmeter reaches setting value；
Step 3, liquid nitrogen is persistently injected, until the value stabilization of temperature sensor 700a, 700b monitoring is at -196 DEG C, according to warp
It tests, the time lasts about greatly 15min or so.
Step 4, closing gate valve 500a, 500b stops the injection of liquid nitrogen.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of municipal pipeline plugging device based on liquid nitrogen, which is characterized in that including：
One is set in the freezing pipe on the municipal pipeline for needing to block, and the freezing pipe has a liquid nitrogen import and a liquid nitrogen
Being constituted between the municipal pipeline that outlet, the freezing pipe and needs block has one to be used to export the liquid nitrogen import and liquid nitrogen
The liquid nitrogen of connection injects cavity；
It is set in and needs on the municipal pipeline that blocks and connect positioned at the both sides of the freezing pipe and with the freezing pipe
First, second sealed pipe fittings；
One liquid nitrogen filling line, one end of the liquid nitrogen filling line is connect with the liquid nitrogen import of the freezing pipe, another
End and the liquid nitrogen outlet of liquid nitrogen supply arrangement connect；
One liquid nitrogen export pipeline, one end of the liquid nitrogen export pipeline is connected with the liquid nitrogen outlet of the freezing pipe, another
It holds and is connect with the recycling import of the liquid nitrogen of liquid nitrogen supply arrangement；
One is mounted on the first gate valve of the liquid nitrogen import on the liquid nitrogen filling line and close to the freezing pipe；
One is mounted on the second gate valve that the liquid nitrogen on the liquid nitrogen export pipeline and close to the freezing pipe exports；
One is mounted on the flowmeter on the liquid nitrogen filling line；And
At least one temperature sensor for monitoring the freezing pipe temperature in real time being arranged on the freezing pipe.
2. the municipal pipeline plugging device based on liquid nitrogen as described in claim 1, which is characterized in that the freezing pipe is poly-
Chlorotrifluoroethylene pipe fitting.
3. the municipal pipeline plugging device based on liquid nitrogen as described in claim 1, which is characterized in that the temperature sensor is
It two, is separately mounted at the heteropleural diagonal position of the freezing pipe.
4. the municipal pipeline plugging device based on liquid nitrogen as claimed in claim 3, which is characterized in that the temperature sensor is
Thermal resistance temperature sensing sensor, temperature-sensitive range is between -200 DEG C~800 DEG C.
5. the municipal pipeline plugging device based on liquid nitrogen as described in claim 1, which is characterized in that described first, second is close
Tube sealing part is respectively arranged with a sealing rubber layer on the inner tube surface for needing the municipal pipeline blocked to contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820394728.0U CN208011156U (en) | 2018-03-22 | 2018-03-22 | A kind of municipal pipeline plugging device based on liquid nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820394728.0U CN208011156U (en) | 2018-03-22 | 2018-03-22 | A kind of municipal pipeline plugging device based on liquid nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208011156U true CN208011156U (en) | 2018-10-26 |
Family
ID=63890414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820394728.0U Expired - Fee Related CN208011156U (en) | 2018-03-22 | 2018-03-22 | A kind of municipal pipeline plugging device based on liquid nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208011156U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440085A (en) * | 2019-08-13 | 2019-11-12 | 西南石油大学 | A kind of temporary block apparatus of gathering line liquid nitrogen cryogenics suitable for multi-pipe-diameter |
| CN110539081A (en) * | 2019-09-29 | 2019-12-06 | 华南理工大学 | deepwater pipeline composite milling material increase and decrease in-situ repair equipment and method |
| CN110682236A (en) * | 2019-11-08 | 2020-01-14 | 中国原子能科学研究院 | Ice plug jacket device for metal surface sealing joint maintenance operation |
-
2018
- 2018-03-22 CN CN201820394728.0U patent/CN208011156U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440085A (en) * | 2019-08-13 | 2019-11-12 | 西南石油大学 | A kind of temporary block apparatus of gathering line liquid nitrogen cryogenics suitable for multi-pipe-diameter |
| CN110539081A (en) * | 2019-09-29 | 2019-12-06 | 华南理工大学 | deepwater pipeline composite milling material increase and decrease in-situ repair equipment and method |
| CN110682236A (en) * | 2019-11-08 | 2020-01-14 | 中国原子能科学研究院 | Ice plug jacket device for metal surface sealing joint maintenance operation |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181026 |