CN207071579U - The anhydrous purging system of heavy caliber long range pressure pipeline - Google Patents
The anhydrous purging system of heavy caliber long range pressure pipeline Download PDFInfo
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- CN207071579U CN207071579U CN201720666667.4U CN201720666667U CN207071579U CN 207071579 U CN207071579 U CN 207071579U CN 201720666667 U CN201720666667 U CN 201720666667U CN 207071579 U CN207071579 U CN 207071579U
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Abstract
The utility model provides a kind of anhydrous purging system of heavy caliber long range pressure pipeline, belongs to pipeline cleaning technical field.It solves the problems such as prior art design is not reasonable.The anhydrous purging system of this heavy caliber long range pressure pipeline, it is connected with pressure pipeline to be cleaned and between the water transfer valve and water delivery valve on pressure pipeline, including gas transmission main, three-level air pressure texture, cooling structure and gas impulse generator etc. are sequentially provided with along the moving direction of the gas of its conveying on gas transmission main.The advantages of this heavy caliber long range pressure pipeline anhydrous purging system, is：The gas supply capacity of the system is improved using the setting of three-level air pressure texture that low pressure, three kinds of middle pressure, high pressure other compressed airs of pressure stage can be made, reduce power consumption simultaneously, the setting of gas pulses generator makes caused dirt of the gas preferably in cleaning pressure pipeline.
Description
Technical field
The utility model belongs to pipeline cleaning technical field, anhydrous more particularly, to a kind of heavy caliber long range pressure pipeline
Purging system.
Background technology
Water is the necessity of life and production, on the living conditions if water quality does not reach corresponding requirement, will influence people
The health of body；Industrially water quality does not reach respective standard, will give industrially caused damage, be this water quality standard formulation and
Social all trades and professions are closely bound up.80 years this periods so far of 20th century, the urban water supply cause in China have obtained huge
Development.The existing GB5749-2006 standards for drinking water quality in China is by the Ministry of Public Health, the Ministry of Construction, Ministry of Water Resources, territory money
Source portion and State Environmental Protection Administration propose, are formulated in the case where Standardization Administration of China organizes and leads, by Chinese disease
Prevention center is responsible for drafting, by the national standard of Ministry of Public Health's management through specialized department, in the formal implementation in the whole nation on July 1st, 2007
, new standard regulation water quality detection project increases to 106 by original 35, wherein on the influential index of health（As lead,
Arsenic, agricultural chemicals, microorganism etc.）Account for 81%.Feedwater piping only through installation rinses the water for being just available for out water quality reaching standard completely, institute
To say that pipe flushing occupies very important status in city supply water pipeline engineering.
Feedwater piping passes through long-play, and pipeline meeting corrosion and scaling, impurity deposition and compression strength reduce, when in pipeline
When water (flow) direction, pressure jump, under in-pipe flow effect, inner-walls of duct fouling partial exfoliation, easily there is " yellow water ", " black
Water ", or even booster, cause Water Quality in Networks secondary pollution and water failure；Pressure sewage conduct passes through long-play,
Corrosion and scaling, impurity depositional phenomenon can be produced；Therefore plumbing pressure pipeline must periodic cleaning.Health organization expert alerts：
Rust water is not only produced using running water tube wall for many years, hinders current, is even more to shelter evil people and countenance evil practices in tube wall, hoards various miscellaneous bacterias, micro-
The toxic heavy metals such as algae poison, arsenic, cadmium, mercury are measured, as current are absorbed by the body little by little, accumulation inherently causes various long afterwards
The disease of various kinds.Running water and the various problem Producing reasons of other pressure pipe networks have many kinds, pass through correlative study unit
Investigation thinks that reason mainly has the following aspects:1) when output water is with corrosive substance or pipeline (including user's branch
Pipeline) service life is long, and inner-walls of duct will corrosion and scaling, deposition；Initial stage is when water velocity, direction or hydraulic pressure in pipeline
When undergoing mutation, the water quality deterioration of short time is will result in, the rising of the indexs such as concentration of iron, turbidity, colourity, latter stage even meeting occurs
Cause to supply, impeded drainage, have a strong impact on production and living；2) new pipeline installation construction is lack of standardization, does not do interior anti-corrosion, operation preshoot
Wash, sterilize it is not thorough；3) when water source or undrinkable water pipeline connect, anti-pollution measure is not taken, unqualified water is flowed into pipe network
It is interior；4) some pipelines, valve, water meter long period of soaking also easily cause different degrees of pollution in water to pipe network water；5) it is secondary
Water facilities, if storage cistern, water storing tank are for a long time without cleaning and sterilizing；6）Feed pipe is as water delivery medium, throughout the year and water
Or slowly drained soil contact, because chemical reaction or electrochemical reaction effect produce certain corrosion, also because inner wall of metal tube is by water enchroachment (invasion)
Lose, the precipitation of calcium carbonate in water, breeding of suspension precipitation and iron bacteria, algae in water etc. turns into the master of pollution pipeline
Cause.Using not clean for a long time makes various sediments silts in pipeline form block.
The widely used conventional pipelines cleaning of water supply industry mainly has mechanical pipe cleaning, waterpower clear at home at present
Wash and rush cleaning etc. with intelligent pulse cyclone.Mechanical cleaning process is using steel wire rope etc., it is dragged back and forth in feed pipe with external force
Dynamic, the method is applied to remove the feedwater piping with hard incrustation, is commonly used to the pipeline that caliber is less than 450mm, pipe cleaning
Length is that damage original to pipeline is larger, it is necessary to disconnected pipe and cut off the water up to 100 ~ 250m, the shortcomings that this method, and it is attached to meet pipeline
Part etc., constructional difficulties；Waterpower ablution is that pipeline is rinsed with the high-velocity flow of certain hydraulic pressure, suitable in feedwater piping
Wall only has soft incrustation, not yet forms harder growth ring, bad to harder growth ring developing result, and flow velocity is shadow
The most important parameter of Xiangshui County's power flush efficiency, for large diameter pipeline, raising flow velocity is more difficult, and waterpower cleaning performance is paid no attention to
Think, and the problems such as water consumption is very big.
In order to solve the problems, such as that prior art is present, people have carried out long-term exploration, it is proposed that miscellaneous solution
Scheme.For example, Chinese patent literature discloses a kind of water supply line cleaning device [application number：201620696966.8], at least
Including high-pressure water pipe, bearing, bearing block, link, connecting tube, pressure stabilizing cavity, cleaning head, discharge outlet and cleaning post, the height
Pressure pipe is fixedly connected with the bearing, and the bearing is connected with the bearing block, and the connecting tube passes through welding ends and institute
State bearing block connection, another end is connected with the pressure stabilizing cavity, and the high-pressure water pipe, bearing, bearing block, connecting tube and it is described surely
Pressure chamber is sequentially communicated, and the link lower end is fixedly connected with the bearing block, and upper end is fixedly connected with the pressure stabilizing cavity, described
It is fixedly sleeved on the link to clear up post.
Above-mentioned scheme improves the subproblem of prior art to a certain extent, and still, the program is also at least present
Following defect：Water content consumption is big, and flow velocity is slower, the problems such as cleaning performance difference.
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, providing a kind of reasonable in design, the good heavy caliber length of using effect
Apart from the anhydrous purging system of pressure pipeline.
To reach above-mentioned purpose, the utility model employs following technical proposal：Heavy caliber of the present utility model is over long distances
The anhydrous purging system of pressure pipeline, it is connected with pressure pipeline to be cleaned and positioned at the water transfer valve on pressure pipeline
Between water delivery valve, including gas transmission main, it is characterised in that：On gas transmission main along its conveying gas moving direction according to
Secondary to be provided with three-level air pressure texture, cooling structure and gas impulse generator, output end and the pressure pipeline of gas transmission main connect
Connect, at least one electromagnetic induction heating circle is arranged with gas transmission main and between gas pulses generator and pressure pipeline.
The setting of three-level air pressure texture can not only provide high pressure compressed gas, also allow for difficulty according to Fouling Cleaning in pressure pipeline
Yi Du makes it be reduced as far as possible while dirt in flushing pressure pipeline is met to adjust the pressure of required compressed gas
Power consumption.The gas of pulsed caused by gas pulses generator improves the cleaning function to pressure pipeline, and cooling structure is set
Putting reduces gas pulses generator is damaged by the compressed gas of high temperature, extends its service life, electromagnetic induction heating circle
The temperature of gas by improving pulsed is set to reach enhancing to the cleaning performance of pressure pipeline.
The above-mentioned anhydrous purging system of heavy caliber long range pressure pipeline, three-level air pressure texture include low-pressure air pressure
Contracting machine, middle pressure air compressor and High-Pressure Compressor, the outlet side of low pressure air compressor and middle pressure air compressor
Inlet end connects, and the outlet side of middle pressure air compressor and the inlet end of High-Pressure Compressor connect, low pressure air compressor,
The outlet side of middle pressure air compressor and High-Pressure Compressor is connected with the inlet end of cooling structure respectively.It is simple in construction, peace
Dress is convenient.
The above-mentioned anhydrous purging system of heavy caliber long range pressure pipeline, the outlet side of low pressure air compressor are total to gas transmission
It is in charge of between pipe provided with low pressure gas transmission, low pressure gas transmission, which is in charge of, is provided with the first magnetic valve；The outlet side of middle pressure air compressor is extremely
It is provided with middle pressure gas transmission between gas transmission main to be in charge of, middle pressure gas transmission, which is in charge of, is provided with second solenoid valve；High-Pressure Compressor goes out
Gas end is in charge of between gas transmission main provided with high pressure gas transmission, and high pressure gas transmission, which is in charge of, is provided with the 3rd magnetic valve.Facilitate compressed gas
The control of body pressure and the regulation of flow.
The above-mentioned anhydrous purging system of heavy caliber long range pressure pipeline, low pressure gas transmission, which is in charge of to be provided with, is located at its inlet end
With the low-lift pump between the first magnetic valve；Middle pressure gas transmission is in charge of provided with the middle pressure between its inlet end and second solenoid valve
Pump；High pressure gas transmission is in charge of provided with the high-pressure pump between its inlet end and the 3rd magnetic valve.Improve the defeated of compressed gas
Output.
The above-mentioned anhydrous purging system of heavy caliber long range pressure pipeline, low pressure gas transmission, which is in charge of to be provided with, is located at its inlet end
The first gs-oil separator between the first magnetic valve；Middle pressure gas transmission be in charge of provided with positioned at its inlet end and second solenoid valve it
Between the second gs-oil separator；High pressure gas transmission is in charge of provided with the 3rd oil gas between its inlet end and the 3rd magnetic valve
Separator.The purity of the compressed gas of output is improved, while is easy to the recovery of lubricating oil.
The above-mentioned anhydrous purging system of heavy caliber long range pressure pipeline, cooling structure are included on the outside of gas transmission main
Coolant jacket, the input of coolant jacket is connected with cooling water inlet pipe, the connection of output end and cooling water outlet pipe.Meeting cooling effect
While fruit, reduce manufacturing cost.
The above-mentioned anhydrous purging system of heavy caliber long range pressure pipeline, the outer gusset of electromagnetic induction heating circle are provided with heat-insulated
Layer.Improve the heating effect to compressed gas.
The above-mentioned anhydrous purging system of heavy caliber long range pressure pipeline, gas transmission main is in output end and toward pressure pipe
Road direction is sequentially provided with gas transmission master cylinder and gas transmission master control magnetic valve.It is easy to output of the regulation and control to the compressed gas of pressure pipeline output
Amount.
Compared with prior art, it is the advantages of this heavy caliber long range pressure pipeline anhydrous purging system：Reasonable in design,
Simple in construction, use can be made low pressure, middle pressure, the three-level air pressure texture of high pressure three kinds of other compressed airs of pressure stage and set
The gas supply capacity for improving the system is put, while reduces power consumption, the setting of gas pulses generator makes caused gas more preferable
Dirt in ground cleaning pressure pipeline.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 provides the structural representation of the utility model embodiment.
In figure, pressure pipeline a, water transfer valve b, water delivery valve c, blow-off line d, blowoff valve e, gas transmission main 1, three
Level air pressure texture 2, low pressure air compressor 201, middle pressure air compressor 202, High-Pressure Compressor 203, low pressure are defeated
Qi leel pipe 204, middle pressure gas transmission are in charge of 205, high pressure gas transmission and are in charge of the 206, first magnetic valve 207, the electricity of second solenoid valve the 208, the 3rd
Magnet valve 209, low-lift pump 210, medium lift pump 211, high-pressure pump 212, the first gs-oil separator 213, the second gs-oil separator 214,
Three gs-oil separators 215, cooling structure 3, coolant jacket 31, cooling water inlet pipe 32, cooling water outlet pipe 33, gas pulses occur
Device 4, electromagnetic induction heating circle 5, thermal insulation layer 6, gas transmission master cylinder 7, gas transmission master control magnetic valve 8.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in further detail by embodiment, and following examples are pair
It is of the present utility model explanation and the utility model is not limited to following examples.
As shown in figure 1, the anhydrous purging system of this heavy caliber long range pressure pipeline, be connected with pressure pipeline a to be cleaned,
And between the water transfer valve b and water delivery valve c on pressure pipeline a, including gas transmission main 1, it is characterised in that：
On gas transmission main 1 three-level air pressure texture 2, cooling structure 3 and gas are sequentially provided with along the moving direction of the gas of its conveying
Impulse generator 4, the output end of gas transmission main 1 are connected with pressure pipeline a, on gas transmission main 1 and are located at gas pulses generator 4
At least one electromagnetic induction heating circle 5 is arranged between pressure pipeline a, the setting of three-level air pressure texture 2 can not only carry
For high pressure compressed gas, the pressure for also allowing for adjusting required compressed gas according to the difficulty of Fouling Cleaning in pressure pipeline a
Power makes it reduce power consumption, arteries and veins caused by gas pulses generator 4 as far as possible while dirt in flushing pressure pipeline a is met
The gas for rushing formula improves cleaning function to pressure pipeline a, the setting of cooling structure 3 reduce gas pulses generator 4 by
The compressed gas infringement of high temperature, extends its service life, and the setting of electromagnetic induction heating circle 5 is by improving the gas of pulsed
Temperature it is defeated that close water is connected to pressure pipeline a on to pressure pipeline a cleaning performance, preferably the system to reach enhancing
Enter valve b one end.
Specifically, three-level air pressure texture 2 here includes low pressure air compressor 201, middle pressure air compressor 202
With High-Pressure Compressor 203, the outlet side of low pressure air compressor 201 is connected with the inlet end of middle pressure air compressor 202,
It is middle pressure air compressor 202 outlet side be connected with the inlet end of High-Pressure Compressor 203, low pressure air compressor 201, in
Inlet end of the outlet side of pressure air compressor 202 and High-Pressure Compressor 203 respectively with cooling structure 3 is connected, structure letter
It is single, it is easy for installation；Here it is in charge of between gas transmission main 1 provided with low pressure gas transmission the outlet side of low pressure air compressor 201
204, low pressure gas transmission is in charge of 204 and is provided with the first magnetic valve 207；It is middle pressure air compressor 202 outlet side to gas transmission main 1 it
Between be provided with middle pressure gas transmission and be in charge of 205, middle pressure gas transmission is in charge of 205 and is provided with second solenoid valve 208；High-Pressure Compressor 203
Outlet side is in charge of 206 between gas transmission main 1 provided with high pressure gas transmission, and high pressure gas transmission is in charge of 206 and is provided with the 3rd magnetic valve 209,
Facilitate the control of compression pressure and the regulation of flow；Here low pressure gas transmission be in charge of 204 be provided be located at its inlet end
With the low-lift pump 210 between the first magnetic valve 207；It is middle pressure gas transmission be in charge of 205 be provided be located at its inlet end and second solenoid valve
Medium lift pump 211 between 208；206 high pressures being provided between its inlet end and the 3rd magnetic valve 209 are in charge of in high pressure gas transmission
Pump 212, improve the output quantity of compressed gas；Here low pressure gas transmission is in charge of 204 and is provided with positioned at its inlet end and the first electricity
The first gs-oil separator 213 between magnet valve 207；It is middle pressure gas transmission be in charge of 205 be provided be located at its inlet end and second solenoid valve
The second gs-oil separator 214 between 208；High pressure gas transmission be in charge of 206 be provided with positioned at its inlet end and the 3rd magnetic valve 209 it
Between the 3rd gs-oil separator 215, improve the purity of the compressed gas of output, while be easy to the recovery of lubricating oil；Here
Cooling structure 3 include the coolant jacket 31 located at the outside of gas transmission main 1, input and the cooling water inlet pipe 32 of coolant jacket connect
Connect, output end and cooling water outlet pipe 33 connect, while cooling-down effect is met, reduce manufacturing cost.
Further, 5 outer gusset of electromagnetic induction heating circle here is provided with thermal insulation layer 6, improves and compressed gas is added
Thermal effect；Here gas transmission main 1 is in output end and past pressure pipeline a directions are sequentially provided with gas transmission master cylinder 7 and gas transmission is total
Magnetic valve 8 is controlled, is easy to regulation and control to the output quantity of the pressure pipeline a compressed gas exported.
Operation principle：Comprise the following steps：Step A：The water delivery valve c closed on pressure pipeline a to be cleaned, open
Water transfer valve b on the pressure pipeline a and blowoff valve e on the blow-off line d being connected with pressure pipeline a；Step B：Open
Low pressure compression function in dynamic three-level air pressure texture 2；Step C：According to the difficulty or ease of the cleaning in pressure pipeline a to be cleaned
Degree decision be only it is no also need start in pressure compression and high pressure compressed function；Step D：Air after compression enters through overcooling structure 3
Enter gas pulses generator 4 after row cooling processing, pulsed gas made of gas pulses generator 4 flows into its outside winding
Heated when having the pipeline section of the gas transmission main 1 of at least one electromagnetic induction heating circle 5；Step E：The pulsed gas of heating
Body is flowed into by gas transmission main 1 in pressure pipeline a to be cleaned, turbulent flow is formed with the water in pressure pipeline a, then to pressure pipe
Dirt in road a is cleaned；Step F：Abundant step C to E, after the Fouling Cleaning in pressure pipeline a, is closed successively
Three-level air pressure texture 2, the blowoff valve e on blow-off line d are closed, opens the water delivery valve c on pressure pipeline a；Further
Ground, it is in charge of the first magnetic valve 207 on 204 and low-lift pump 210 located at low pressure gas transmission by adjusting to control in step B here
Low pressure compressed gas inputs the amount of gas transmission main 1；By adjusting the second electromagnetism being in charge of located at middle pressure gas transmission on 205 in step C
Valve 208 and medium lift pump 211 and the 3rd magnetic valve 209 being in charge of located at high pressure gas transmission on 206 and high-pressure pump 212 press pressure in controlling
The amount of contracting gas and high pressure compressed gas input gas transmission main 1.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although pressure pipeline a, water transfer valve b, water delivery valve c, blow-off line d, blowdown have more been used herein
Valve e, gas transmission main 1, three-level air pressure texture 2, low pressure air compressor 201, middle pressure air compressor 202, pressure-air
Compressor 203, low pressure gas transmission are in charge of 204, middle pressure gas transmission and are in charge of 205, high pressure gas transmission and are in charge of the 206, first magnetic valve 207, second
Magnetic valve 208, the 3rd magnetic valve 209, low-lift pump 210, medium lift pump 211, high-pressure pump 212, the first gs-oil separator 213, second
Gs-oil separator 214, the 3rd gs-oil separator 215, cooling structure 3, coolant jacket 31, cooling water inlet pipe 32, cooling water water outlet
The terms such as pipe 33, gas pulses generator 4, electromagnetic induction heating circle 5, thermal insulation layer 6, gas transmission master cylinder 7, gas transmission master control magnetic valve 8,
But it is not precluded from the possibility using other terms.It is used for the purpose of more easily describing and explaining this practicality using these terms
New essence；Any additional limitation is construed as all to disagree with the utility model spirit.
Claims (8)
- A kind of 1. anhydrous purging system of heavy caliber long range pressure pipeline, with pressure pipeline to be cleaned（a）Connect and be located at and set In pressure pipeline（a）On water transfer valve（b）With water delivery valve（c）Between, including gas transmission main（1）, it is characterised in that： Described gas transmission main（1）On along the moving direction of gas of its conveying be sequentially provided with three-level air pressure texture（2）, cooling knot Structure（3）With gas impulse generator（4）, described gas transmission main（1）Output end and pressure pipeline（a）Connection, described is defeated Gas house steward（1）Go up and be located at gas pulses generator（4）With pressure pipeline（a）Between be arranged with least one electromagnetic induction heating Circle（5）.
- 2. the anhydrous purging system of heavy caliber long range pressure pipeline according to claim 1, it is characterised in that described three Level air pressure texture（2）Including low pressure air compressor（201）, middle pressure air compressor（202）And High-Pressure Compressor （203）, described low pressure air compressor（201）Outlet side and middle pressure air compressor（202）Inlet end connection, it is described Middle pressure air compressor（202）Outlet side and High-Pressure Compressor（203）Inlet end connection, described low-pressure air Compressor（201）, middle pressure air compressor（202）And High-Pressure Compressor（203）Outlet side respectively with cooling structure（3） Inlet end connection.
- 3. the anhydrous purging system of heavy caliber long range pressure pipeline according to claim 2, it is characterised in that the low pressure Air compressor（201）Outlet side to gas transmission main（1）Between be in charge of provided with low pressure gas transmission（204）, described low pressure gas transmission It is in charge of（204）It is provided with the first magnetic valve（207）；Medium pressure air compressor（202）Outlet side to gas transmission main（1）It Between be provided with it is middle pressure gas transmission be in charge of（205）, described middle pressure gas transmission is in charge of（205）It is provided with second solenoid valve（208）；The high pressure Air compressor（203）Outlet side to gas transmission main（1）Between be in charge of provided with high pressure gas transmission（206）, described high pressure gas transmission It is in charge of（206）It is provided with the 3rd magnetic valve（209）.
- 4. the anhydrous purging system of heavy caliber long range pressure pipeline according to claim 3, it is characterised in that described is low Pressure gas transmission is in charge of（204）It is provided with and is located at its inlet end and the first magnetic valve（207）Between low-lift pump（210）；In described Pressure gas transmission is in charge of（205）It is provided with and is located at its inlet end and second solenoid valve（208）Between medium lift pump（211）；Described height Pressure gas transmission is in charge of（206）It is provided with and is located at its inlet end and the 3rd magnetic valve（209）Between high-pressure pump（212）.
- 5. the anhydrous purging system of heavy caliber long range pressure pipeline according to claim 3, it is characterised in that described is low Pressure gas transmission is in charge of（204）It is provided with and is located at its inlet end and the first magnetic valve（207）Between the first gs-oil separator（213）； Described middle pressure gas transmission is in charge of（205）It is provided with and is located at its inlet end and second solenoid valve（208）Between the second Oil-gas Separation Device（214）；Described high pressure gas transmission is in charge of（206）It is provided with and is located at its inlet end and the 3rd magnetic valve（209）Between the 3rd Gs-oil separator（215）.
- 6. the anhydrous purging system of heavy caliber long range pressure pipeline according to claim 1, it is characterised in that described is cold But structure（3）Including located at gas transmission main（1）The coolant jacket in outside（31）, input and the cooling water of described coolant jacket are intake Pipe（32）Connection, output end and cooling water outlet pipe（33）Connection.
- 7. the anhydrous purging system of heavy caliber long range pressure pipeline according to any one of claims 1 to 6, it is characterised in that Described electromagnetic induction heating circle（5）Outer gusset is provided with thermal insulation layer（6）.
- 8. the anhydrous purging system of heavy caliber long range pressure pipeline according to claim 1, it is characterised in that described is defeated Gas house steward（1）In the output end and toward pressure pipeline（a）Direction is sequentially provided with gas transmission master cylinder（7）With gas transmission master control magnetic valve （8）.
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| CN201720666667.4U CN207071579U (en) | 2017-06-09 | 2017-06-09 | The anhydrous purging system of heavy caliber long range pressure pipeline |
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| CN201720666667.4U CN207071579U (en) | 2017-06-09 | 2017-06-09 | The anhydrous purging system of heavy caliber long range pressure pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107030069A (en) * | 2017-06-09 | 2017-08-11 | 杨君锋 | The anhydrous purging system of heavy caliber long range pressure pipeline and its application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107030069A (en) * | 2017-06-09 | 2017-08-11 | 杨君锋 | The anhydrous purging system of heavy caliber long range pressure pipeline and its application method |
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