CN102003596A - Vacuum insulation pipe filled with inert gas - Google Patents
Vacuum insulation pipe filled with inert gas Download PDFInfo
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- CN102003596A CN102003596A CN2010105549924A CN201010554992A CN102003596A CN 102003596 A CN102003596 A CN 102003596A CN 2010105549924 A CN2010105549924 A CN 2010105549924A CN 201010554992 A CN201010554992 A CN 201010554992A CN 102003596 A CN102003596 A CN 102003596A
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Abstract
The invention relates to a vacuum insulation pipe filled with inert gas, wherein, an ultrafine particle (fiber) insulation material is filled between an inner pipe and an outer pipe; the ultrafine particle (fiber) insulation material is filled with low-thermal conductivity inert gas maintained in a vacuum state such as argon, krypton, xenon and the like; and the vacuum absolute pressure of the inert gas in the ultrafine particle (fiber) insulation material is 10-15000Pa, and better insulation effect can be obtained under lower pressure. In the invention, the adopted low-thermal conductivity inert gas has better thermal insulation property than that of air, and the ultrafine particle (fiber) insulation material prevents collision of gas molecules so as to hinder heat conduction; the ultrafine particle (fiber) insulation material also prevents heat transfer caused by convection and irradiation; and the radiating loss of the vacuum insulation pipe is about 2.5%-25% of that of the conventional insulation pipe with the same thickness and the same material and is only 50% of that of the common vacuum insulation pipe (not filled with inert gas) under the same vacuum degree.
Description
Technical field
The present invention relates to a kind of vacuum thermal-insulating pipeline, especially a kind of vacuum thermal-insulating pipeline of filling inert gas.
Background technique
Because the high speed development of China's economic, the consumption of the energy increases just with surprising rapidity, the adiabatic heat-insulation engineering of pipeline is the important measures of energy saving, but do not obtain due attention for a long time, according to preresearch estimates, the thermal loss of China's heat distribution pipeline accounts for the 7.5-8% of whole heating system coal consumptions, China's efficiency of energy utilization at present is about 29%, than low about 10 percentage points of advanced international standard, serious waste of resources, the effective rate of utilization that how to reduce the loss raising heat of heat becomes the key of energy-saving and emission-reduction.
Conventional pipe insulation method is to lay thermal insulating material outside pipeline, and pipe insulation material commonly used has mineral wool, rock wool, glass fibre, microporous calcium silicate, urethane foam etc.Conventional heat preserving method has following shortcoming: the thermal insulation property of (1) these heat distribution pipelines and along with the pipe laying mode is (indoor, outdoor, trench, direct-burried etc.), weather conditions (snow by rainstorm, outdoor temperature, atmospheric moisture etc.), reduce greatly with the different of environmental conditions (whether etchant gas etc. is arranged in the surrounding atmosphere); (2) after insulation layer thickness reaches certain value, thicken thermal insulation layer again, heat insulation effect does not obviously improve, but cost improves greatly along with the increase of insulation thickness.
The vacuum thermal-insulating pipeline technology that has occurred, two kinds of ways are generally arranged: first kind of way be directly in, space between the Outer Tube is evacuated, (thermal conductivity of air is 0.0241 W/ (mk) because the thermal conductivity of air (or thermal conductivity) is obviously than indifferent gas height, the thermal conductivity of argon gas is 0.0163 W/ (mk), the thermal conductivity of krypton gas is 0.0087 W/ (mk), the thermal conductivity of xenon is 0.0052 W/ (mk)), just can obtain reasonable heat insulation effect so this way must reach very high degree of vacuum, but the acquisition of condition of high vacuum degree and maintenance are technical barriers; Second kind of way is to lay conventional thermal insulation layer outside interior pipe earlier, and the space between conventional thermal insulation layer and the outer tube is evacuated, this way pipeline configuration complexity, constructional difficulties.
Summary of the invention
The present invention is the vacuum thermal-insulating pipeline that will provide a kind of inert gas to fill, and is used to solve big, the general vacuum thermal-insulating pipeline degree of vacuum of conventional insulation pipe radiation loss and requires too high and the degree of vacuum technical problems such as complexity that are hard to keep and construct too.
For achieving the above object, the technical solution used in the present invention is: the vacuum thermal-insulating pipeline that a kind of inert gas is filled, comprise outer tube, interior pipe, be characterized in: fill ultra-fine grain (fiber) thermal insulating material between interior pipe and the outer tube, be filled with the inert gas of the low heat conductivity that keeps vacuum state in ultra-fine grain (fiber) thermal insulating material.
The absolute pressure of inert gas is 10-15000Pa in ultra-fine grain (fiber) thermal insulating material.
Connect vacuum-pumping tube by vacuum valve a on the outer tube; Connect the inert gas gas tube by vacuum valve b.
The invention has the beneficial effects as follows: the present invention compares with existing vacuum thermal-insulating pipeline, owing to adopt the inert gas of low heat conductivity, the thermal insulation property of itself is better than air, and ultra-fine grain (fiber) thermal insulating material has stopped the collision of gas molecule, has hindered the carrying out of heat conduction; The existence of ultra-fine grain (fiber) thermal insulating material has also stopped the heat transfer that produces because of convection current and radiation.Radiation loss of the present invention has only the 2.5%-25% of stack pile with the conventional insulation pipe of material; Approximately have only with 50% of general vacuum thermal-insulating pipeline under the degree of vacuum (being that air is not an inert gas in the pipeline) radiation loss.
Description of drawings
Fig. 1 is a structure sectional view of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, the vacuum thermal-insulating pipeline that inert gas of the present invention is filled comprises vacuum-pumping tube 1, outer tube 3, inert gas gas tube 4, interior pipe 5, vacuum valve a7, vacuum valve b8.
In the interior pipe 5 working medium 6 is arranged.
Between interior pipe 5 and outer tube 3, fill ultra-fine grain (fiber) thermal insulating material 2, air with alternative thermal insulating material spaces such as the inert gas of low heat conductivity such as argon, krypton, xenons, inert gas argon, krypton, xenon etc. keep vacuum state, absolute pressure is 10-15000Pa, the low more heat insulation effect of pressure is good more, and radiation loss of the present invention has only the 2.5%-25% of stack pile with the conventional insulation pipe of material.Connect vacuum-pumping tube 1 by vacuum valve a7 on the outer tube 3; Connect inert gas gas tube 4 by vacuum valve b8.Except that thermal insulating material, other parts all can adopt metallic material.
The working principle and the working procedure of the vacuum thermal-insulating pipeline that inert gas is filled are as follows: the first, at first connect 1 vacuum-pumping tube by vacuum pump, open 7 vacuum valve a, the vacuum pump continuous operation, the degree of vacuum in space, thermal insulating material place is extracted into high vacuum, closes 7 vacuum valve a vacuum pumps and quit work; The second, be connected to 4 inert gas gas tubes after the gas cylinder process reduction valve group with inert gas, open vacuum valve b, fill the inert gas of low thermal conductivity (thermal conductivity), up to predefined degree of vacuum.
Claims (3)
1. the inert gas vacuum thermal-insulating pipeline of filling, comprise outer tube (3), interior pipe (5), it is characterized in that: fill ultra-fine grain fiber heat preservation material (2) in described between pipe (5) and the outer tube (3), be filled with the inert gas of the low heat conductivity that keeps vacuum state in the ultra-fine grain fiber heat preservation material (2).
2. the vacuum thermal-insulating pipeline that inert gas according to claim 1 is filled is characterized in that: the vacuum absolute pressure of inert gas is 10-15000Pa in the described ultra-fine grain fiber heat preservation material (2).
3. the vacuum thermal-insulating pipeline that inert gas according to claim 1 is filled is characterized in that: described outer tube (3) is gone up by vacuum valve a(7) connection vacuum-pumping tube (1); By vacuum valve b(8) connection inert gas gas tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105549924A CN102003596A (en) | 2010-11-23 | 2010-11-23 | Vacuum insulation pipe filled with inert gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105549924A CN102003596A (en) | 2010-11-23 | 2010-11-23 | Vacuum insulation pipe filled with inert gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102003596A true CN102003596A (en) | 2011-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105549924A Pending CN102003596A (en) | 2010-11-23 | 2010-11-23 | Vacuum insulation pipe filled with inert gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102003596A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440370A (en) * | 2016-09-30 | 2017-02-22 | 芜湖美的厨卫电器制造有限公司 | Heat insulation sectional material and water heater |
| CN108506648A (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | The production method of heat-insulating profile |
| CN110145877A (en) * | 2019-04-17 | 2019-08-20 | 上海电力学院 | The explosion-proof synergy water heater of the vacuum tube of phase-change temperature control |
| CN110617383A (en) * | 2018-06-19 | 2019-12-27 | 湖南中烟工业有限责任公司 | Heat insulation pipe and non-combustible smoking set using same |
| CN115127135A (en) * | 2022-06-20 | 2022-09-30 | 上海巴拿拿科技有限公司 | Factory building waste heat air-cooled dust collector |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01216191A (en) * | 1988-02-23 | 1989-08-30 | Kawasaki Heavy Ind Ltd | Multiple pipe structure |
| CN2486822Y (en) * | 2001-07-31 | 2002-04-17 | 杨家华 | Heat insualtion structure for heat power pipe net |
| CN2526643Y (en) * | 2002-03-17 | 2002-12-18 | 吴英华 | Composite thermal insulation pipe |
| CN2564837Y (en) * | 2002-08-16 | 2003-08-06 | 王浣生 | Vacuum thermal insulation pipeline |
| JP2004019813A (en) * | 2002-06-18 | 2004-01-22 | Mitsubishi Heavy Ind Ltd | Multiplex piping for low-temperature fluid |
| CN2643136Y (en) * | 2003-09-10 | 2004-09-22 | 杨新光 | Vacuum insulated pipeline |
-
2010
- 2010-11-23 CN CN2010105549924A patent/CN102003596A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01216191A (en) * | 1988-02-23 | 1989-08-30 | Kawasaki Heavy Ind Ltd | Multiple pipe structure |
| CN2486822Y (en) * | 2001-07-31 | 2002-04-17 | 杨家华 | Heat insualtion structure for heat power pipe net |
| CN2526643Y (en) * | 2002-03-17 | 2002-12-18 | 吴英华 | Composite thermal insulation pipe |
| JP2004019813A (en) * | 2002-06-18 | 2004-01-22 | Mitsubishi Heavy Ind Ltd | Multiplex piping for low-temperature fluid |
| CN2564837Y (en) * | 2002-08-16 | 2003-08-06 | 王浣生 | Vacuum thermal insulation pipeline |
| CN2643136Y (en) * | 2003-09-10 | 2004-09-22 | 杨新光 | Vacuum insulated pipeline |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440370A (en) * | 2016-09-30 | 2017-02-22 | 芜湖美的厨卫电器制造有限公司 | Heat insulation sectional material and water heater |
| CN108506648A (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | The production method of heat-insulating profile |
| CN110617383A (en) * | 2018-06-19 | 2019-12-27 | 湖南中烟工业有限责任公司 | Heat insulation pipe and non-combustible smoking set using same |
| CN110145877A (en) * | 2019-04-17 | 2019-08-20 | 上海电力学院 | The explosion-proof synergy water heater of the vacuum tube of phase-change temperature control |
| CN115127135A (en) * | 2022-06-20 | 2022-09-30 | 上海巴拿拿科技有限公司 | Factory building waste heat air-cooled dust collector |
| CN115127135B (en) * | 2022-06-20 | 2023-08-08 | 上海巴拿拿科技有限公司 | Factory building waste heat forced air cooling dust collector |
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Application publication date: 20110406 |