CN108980503A - A kind of high-temperature steam delivery method and pipeline - Google Patents
A kind of high-temperature steam delivery method and pipeline Download PDFInfo
- Publication number
- CN108980503A CN108980503A CN201811012414.0A CN201811012414A CN108980503A CN 108980503 A CN108980503 A CN 108980503A CN 201811012414 A CN201811012414 A CN 201811012414A CN 108980503 A CN108980503 A CN 108980503A
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- China
- Prior art keywords
- temperature steam
- delivery method
- pipeline
- steam delivery
- thermal insulation
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/32—Heating of pipes or pipe systems using hot fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention proposes a kind of simply and easily high-temperature steam delivery method and pipelines.The thermal insulation layer of high temperature conveyance conduit is first full of high-temperature steam, then carries out high-temperature steam conveying again.Intracavitary outside when work to be full of water vapour, when high-temperature steam conveyance conduit and extraneous heat exchange, outer intracavitary water vapour partly or entirely condenses first, and heating agent in inner tube is protected not to be condensed；Simultaneously as closed outer intracavitary water vapour condensation, outer intracavitary formation vacuum layer greatly increase and extraneous heat exchanged thermoresistance.High-temperature steam conveyance conduit of the present invention avoids existing high-temperature steam means of transportation, and structure is complicated, cost is high, thermal insulation property is unstable, is unable to the shortcomings that long distance delivery, have the advantages that heat-insulating property is good, economy is high, can long distance delivery, can in time by monitoring outer tube pressure value variation discovery pipeline failure part, be suitable for steam heating pipe-line system.
Description
Technical field
The present invention relates to high-temperature steam transportation arts, in particular to a kind of high-temperature steam delivery method and pipeline.
Technical background
Heat distribution pipeline be central heating system conveying heating agent important component, for transport liquid, gas, slurries,
Fused salt has unique advantage.Various pipelines have been had in the world, and it is the warp of safety the most for transmitting energy that pipeline transportation, which is recognized,
The method of Ji.Reducing heat distribution pipe network heat loss is to improve heat supply network transfer efficiency, to improve the key link of heating system efficiency
One of.In recent years, the thermal parameters such as heat medium temperature, the pressure that domestic and international heat distribution pipeline transports are continuously improved, and reduce vapor transport
Thermal loss in the process is of great significance for guaranteeing the thermal parameter of transported steam and improving heat supply network transfer efficiency.
Currently, high-temperature steam conveying mostly uses pipeline transportation mode, the conventional structure of high-temperature steam transport pipeline is using guarantor
Structure type of the adiabator in conjunction with air layer.Thermal insulation material mainly has asbestos product, alumina silicate fibre, without asbestos micropore silicic acid
Calcium, composition silicate and centrifugally glass-wool etc..The characteristics of asbestos product is that raw material easily obtains, and is available locally, and produce energy
Consumption is few, at low cost, is high temperature resistant, cheap, heat-insulated, sound-absorbing material.But be mainly bonded by bonding agent between material fiber,
After a period of use, bonding agent is easy failure, in addition pipeline vibration, is allowed to even more serious, it is thin above insulation construction, under
Face is thick, and heat insulation effect is greatly lowered.Heat-insulating calcium silicate product the shortcomings that practical application be breakage rate is higher, after use easily
It is broken, the rate of recovery is low.For some products after high-temperature heating, high-temperature behavior reduction, generation crack, contraction distortion etc. make insulating layer table
The temperature in face is excessively high, and radiation loss is exceeded.Thermal insulation material in conventional high temperature steam conveying pipe is easy in the prevalence of moisture-sensitive
Breaking deformation increases the disadvantages of being significantly increased to influence heat-insulating property, thermal coefficient with temperature, so that pipe long-distance is defeated
High-temperature steam serious heat loss is sent, temperature drop is up to 15 to 20 degrees Celsius every kilometer, while pipeline configuration is complicated, cost is high, no
Insulating layer disabling portion is easily found in time.
Summary of the invention
The present invention provides a kind of simply and easily high-temperature steam delivery method and pipe aiming at the deficiencies in the prior art
Road.
To achieve the goals above, the present invention designed by high-temperature steam delivery method, be characterized in that including with
Lower step:
The thermal insulation layer of high temperature conveyance conduit is first full of high-temperature steam, then carries out high-temperature steam conveying again.
Further, pressure sensor is provided in the thermal insulation layer.
Further, injection channel and exhaust passage are provided on the thermal insulation layer, when work, first by injection channel and row
Gas channel is opened, and logical high-temperature steam simultaneously continues for some time, and is excluded to the on-condensible gas in thermal insulation layer, and it is logical first to close exhaust
Road turns off injection channel.The control of time during this specifically: time=pipe range/steam flow rate.
The present invention is also provided with a kind of pipeline of high-temperature steam delivery method, is characterized in that including inner tube and outer
Pipe, thermal insulation layer is formed between said inner tube and outer tube, both ends by joint seal of flanges, be wherein provided in end flange connection every
The injection channel of thermosphere is provided with valve on the injection channel, and the exhaust that connection thermal insulation layer is provided in another end flanges is logical
Road and condensation water collection channel；The exhaust passage and condensation water collection channel are provided with valve.
Further, the valve on the injection channel, exhaust passage and condensation water collection channel is check valve.
Further, support construction is provided between said inner tube and outer tube.Spacing is fixed, is not shaken between guaranteeing inner and outer pipe
Dynamic, whole circumference outer tube and interior tube spacing are not in the poor situation of one side good heat insulation another side heat preservation from equal.
Further, the support construction is the support ring with axially extending bore.
Further, the support construction is four pillars for connecting outer tube and inner tube.Four supports on same circumference
Column is circumferential not.
Further, said inner tube is 10CrMo910 alloy pipe.
The present invention has the advantages that
Using outer intracavitary water vapour preferential condensation heat release, the high-temperature steam conveyed in inner tube outwardly function of environment heat emission is avoided.
Rarefied air under vacuum has preferable heat-insulating property, increases the thermal resistance of entire high-temperature steam conveyance conduit, from
And the heat loss of the high-temperature steam of inner tube conveying is reduced, guarantee its thermal parameter.
Relative to existing high-temperature steam mode of movement, high-temperature steam conveyance conduit of the present invention avoid structure is complicated,
Cost is high, vulnerable, thermal insulation property is unstable, is unable to the shortcomings that long distance delivery.Rationally designing inner and outer tubes caliber can protect
The high-temperature steam conveyed in inner tube is demonstrate,proved substantially without thermal loss, and pipe long-distance transfer efficiency is high.
The case where reaching identical vacuum degree, high-temperature steam conveyance conduit of the present invention are vacuumized relative to using vacuum pump
By water vapour inner tube is kept the temperature in the way of have better economy, it is spent reduce 98%.
Monitor leakage situation in steam transmission process.By monitoring outer intracavitary pressure value variation, pipeline can be found in time
Disabling portion overhauls in time.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram in high-temperature steam conveyance conduit of the invention vertical section.
Fig. 2 is a kind of structural schematic diagram of the cross section high-temperature steam conveyance conduit A-A of the present invention.
1- outer tube, 2- inner tube, 3- support construction, 4- flange, 5- steam injection channel, 6- exhaust passage, 7- condensed water are received
Collect channel.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments:
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific figure embodiment is closed, the present invention is further explained.It should be understood that these embodiments are merely to illustrate the present invention rather than limitation
The scope of the present invention.Based on the embodiments of the present invention, modification of the those skilled in the art to various equivalent forms of the invention
It is as defined in the appended claims to fall within the application.
Embodiment 1
It as shown in the picture, is a kind of structural schematic diagram of high-temperature steam conveyance conduit of the present invention, specifically include: 1- provides water
Steam seal space condenses the outer tube to form vacuum chamber, inner tube of the 2- as high-temperature steam transport structure, 3- branch by water vapour
Support outer tube simultaneously keeps the support construction with fixed air gap between inner and outer pipes, and 4- inner and outer pipe is fixed the flange with positioning, 5-
The steam injection channel of outer tube water vapour injection channel is provided, 6- excludes the exhaust passage of on-condensible gas in outer tube, and 7- collects outer
The condensed water collecting device of in-tube condensation water.During long distance delivery, tongue and groove flange, i.e. interface one side are used between pipeline
Protrusion can place gasket in groove to upper another side groove.The technology is high sealing commonly used in the art, easy positioning side
Method.
The outer tube diameter is that the outer surface of D=384mm is coated with the steel pipe of reflecting heat insulation coating.
Said inner tube diameter is the 10CrMo910 alloy pipe of D=300mm.
The support construction is the support ring with axially extending bore.
Before the high-temperature steam conveyance conduit work, steam injection channel, exhaust passage are opened, water is injected into outer tube and is steamed
Vapour simultaneously continues for some time, and until the on-condensible gas in outer tube is excluded, first the check valve of closing exhaust passage, turns off steam
Injection channel makes outer lumen form the sealing space for being full of water vapour.
When the high-temperature steam conveyance conduit works, pass through inner tube transport high temperature steam.
Pressure sensor is arranged on the outer tube wall, monitors the pressure change in outer lumen.Pressure can be under normal circumstances
Range fluctuation near some value, and because exocoel is vacuum, pressure is negative pressure；It can suddenly be increased when gas leakage, it at this time can be with
It is determined as gas leakage situation.
Embodiment 2
It as shown in the picture, is a kind of structural schematic diagram of high-temperature steam conveyance conduit of the present invention, specifically include: 1- provides water
Vapor seal space condenses the outer tube to form vacuum chamber, inner tube of the 2- as heating agent transport structure by vapor, and 3- supports outer
It manages and keeps with fixed air gap, with the support construction of axially extending bore between inner and outer pipes, 4- is fixed and positions to inner and outer pipe
Flange, 5- provide outer tube vapor injection channel steam injection channel, 6- exclude outer tube in on-condensible gas exhaust passage,
7- collects the condensed water collecting device of condensed water in outer tube.
The outer tube diameter is that D=403mm is stainless steel tube.
Said inner tube diameter is the 10CrMo910 alloy pipe of D=320mm.
The support construction is four welding pillars for connecting outer tube and inner tube.
Before the high-temperature steam conveyance conduit work, steam injection channel, exhaust passage are opened, water is injected into outer tube and is steamed
Vapour simultaneously continues for some time, and until the on-condensible gas in outer tube is excluded, first the check valve of closing exhaust passage, turns off steam
Injection channel makes outer lumen form the sealing space for being full of water vapour.
When the high-temperature steam conveyance conduit works, pass through inner tube transport high temperature steam.
Pressure sensor is arranged on the outer tube wall, monitors the pressure change in outer lumen.
The beneficial effects of the invention are that:
Using outer intracavitary water vapour preferential condensation heat release, the high-temperature steam conveyed in inner tube outwardly function of environment heat emission is avoided.
Rarefied air under vacuum has preferable heat-insulating property, increases the thermal resistance of entire high-temperature steam conveyance conduit, from
And the heat loss of the high-temperature steam of inner tube conveying is reduced, guarantee its thermal parameter.
Relative to existing high-temperature steam mode of movement, high-temperature steam conveyance conduit of the present invention avoid structure is complicated,
Cost is high, vulnerable, thermal insulation property is unstable, is unable to the shortcomings that long distance delivery.When inner tube diameter is 0.5m, outer tube diameter is taken
It is that can guarantee the high-temperature steam conveyed in inner tube substantially without thermal loss for 0.56m, pipe long-distance transfer efficiency is high.
The case where reaching identical vacuum degree, high-temperature steam conveyance conduit of the present invention are vacuumized relative to using vacuum pump
By water vapour inner tube is kept the temperature in the way of have better economy, it is spent reduce 98%.Specific calculating is as follows:
Take t=200 DEG C of inner tube diameter d=0.5m, transportation lengths L=10km, heating agent and exocoel vapor (steam) temperature, the vacuum pressure P of formation
=4.98 × 10-4bar.Vacuumize mode: separation Vacuum pump machinery is taken to imitate
Rate ηpump=Wsep/P0.544, then vacuum pump does workIt calculates, needs by 0.5 yuan of the every kilowatt hour of the electricity charge
8901.63 yuan of the electricity charge.The present invention: exocoel steam heat
Taking steam price is 200 yuan/t, and required steam expense is
Monitor leakage situation in steam transmission process.By monitoring outer intracavitary pressure value variation, pipeline can be found in time
Disabling portion overhauls in time.
Above embodiments are merely to illustrate design philosophy and feature of the invention, and its object is to make technology in the art
Personnel can understand the content of the present invention and implement it accordingly, and protection scope of the present invention is not limited to the above embodiments.So it is all according to
It is within the scope of the present invention according to equivalent variations made by disclosed principle, mentality of designing or modification.
Claims (9)
1. a kind of high-temperature steam delivery method, it is characterised in that: the following steps are included:
The thermal insulation layer of high temperature conveyance conduit is first full of high-temperature steam, then carries out high-temperature steam conveying again.
2. high-temperature steam delivery method according to claim 1, it is characterised in that: be provided with pressure biography in the thermal insulation layer
Sensor.
3. high-temperature steam delivery method according to claim 1, it is characterised in that: it is logical to be provided with injection on the thermal insulation layer
Road and exhaust passage when work, are first opened injection channel and exhaust passage, and logical high-temperature steam simultaneously continues for some time, to every
On-condensible gas in thermosphere is excluded, and first closes exhaust passage, turns off injection channel.
4. a kind of pipeline of high-temperature steam delivery method as described in claim 1, it is characterised in that: including inner and outer tubes,
Form thermal insulation layer between said inner tube and outer tube, it is heat-insulated that both ends by joint seal of flanges, are wherein provided with connection in end flange
The injection channel of layer is provided with valve on the injection channel, the exhaust passage of connection thermal insulation layer is provided in another end flanges
With condensation water collection channel；The exhaust passage and condensation water collection channel are provided with valve.
5. the pipeline of high-temperature steam delivery method according to claim 4, it is characterised in that: the injection channel, exhaust
Valve on channel and condensation water collection channel is check valve.
6. the pipeline of high-temperature steam delivery method according to claim 4, it is characterised in that: between said inner tube and outer tube
It is provided with support construction.
7. the pipeline of high-temperature steam delivery method according to claim 6, it is characterised in that: the support construction be with
The support ring of axially extending bore.
8. the pipeline of high-temperature steam delivery method according to claim 6, it is characterised in that: the support construction is connection
Four pillars of outer tube and inner tube.Further, the support construction is four pillars for connecting outer tube and inner tube, and same
Four support columns are circumferential not on circumference.
9. the pipeline of high-temperature steam delivery method according to claim 6, it is characterised in that: said inner tube is
10CrMo910 alloy pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811012414.0A CN108980503A (en) | 2018-08-31 | 2018-08-31 | A kind of high-temperature steam delivery method and pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811012414.0A CN108980503A (en) | 2018-08-31 | 2018-08-31 | A kind of high-temperature steam delivery method and pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108980503A true CN108980503A (en) | 2018-12-11 |
Family
ID=64548474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811012414.0A Pending CN108980503A (en) | 2018-08-31 | 2018-08-31 | A kind of high-temperature steam delivery method and pipeline |
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| Country | Link |
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| CN (1) | CN108980503A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056735A (en) * | 2019-04-16 | 2019-07-26 | 仪征市恒盛机械有限公司 | A kind of antifreeze aluminum pipe |
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|---|---|---|---|---|
| JPH0972489A (en) * | 1995-09-07 | 1997-03-18 | Kubota Corp | Heat insulation pipe for feeding steam with leakage sensor |
| CN102384332A (en) * | 2011-10-27 | 2012-03-21 | 江苏太阳宝新能源有限公司 | Preheating, cooling and solidification processing method of photothermal power generation molten salt energy storage system pipeline and pipeline thereof |
| CN106895261A (en) * | 2017-02-22 | 2017-06-27 | 峨眉山佳洁纸制品有限责任公司 | Cyclic steam conveys energy conserving system |
| CN207145847U (en) * | 2017-07-31 | 2018-03-27 | 平顶山市神鹰化工科技有限公司 | A kind of jacket heat-preservation pipe for being used to prevent that liquid solid phosgene from condensing |
| CN207349694U (en) * | 2017-08-30 | 2018-05-11 | 中投亿星新能源投资有限公司 | A kind of anti-condensation delivery pipe of fused salt |
-
2018
- 2018-08-31 CN CN201811012414.0A patent/CN108980503A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0972489A (en) * | 1995-09-07 | 1997-03-18 | Kubota Corp | Heat insulation pipe for feeding steam with leakage sensor |
| CN102384332A (en) * | 2011-10-27 | 2012-03-21 | 江苏太阳宝新能源有限公司 | Preheating, cooling and solidification processing method of photothermal power generation molten salt energy storage system pipeline and pipeline thereof |
| CN106895261A (en) * | 2017-02-22 | 2017-06-27 | 峨眉山佳洁纸制品有限责任公司 | Cyclic steam conveys energy conserving system |
| CN207145847U (en) * | 2017-07-31 | 2018-03-27 | 平顶山市神鹰化工科技有限公司 | A kind of jacket heat-preservation pipe for being used to prevent that liquid solid phosgene from condensing |
| CN207349694U (en) * | 2017-08-30 | 2018-05-11 | 中投亿星新能源投资有限公司 | A kind of anti-condensation delivery pipe of fused salt |
Non-Patent Citations (1)
| Title |
|---|
| 斯派莎克工程（中国）有限公司: "《蒸汽和冷凝水系统手册》", 31 January 2007 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056735A (en) * | 2019-04-16 | 2019-07-26 | 仪征市恒盛机械有限公司 | A kind of antifreeze aluminum pipe |
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Application publication date: 20181211 |