CN2611722Y - Multi-shielded vacuum composite corrosion-proof thermal insulating and directly buryed steam pipe - Google Patents
Multi-shielded vacuum composite corrosion-proof thermal insulating and directly buryed steam pipe Download PDFInfo
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- CN2611722Y CN2611722Y CN 02294415 CN02294415U CN2611722Y CN 2611722 Y CN2611722 Y CN 2611722Y CN 02294415 CN02294415 CN 02294415 CN 02294415 U CN02294415 U CN 02294415U CN 2611722 Y CN2611722 Y CN 2611722Y
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- steel tube
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Abstract
The utility model discloses a multi-curtained vacuum combined antiseptic heat-preserved direct buried vapor pipe, formed by an inner steel tube, an outer steel tube, a multi-curtained vacuum combined antiseptic heat-preserved layer, inner steel tube sliding brackets, fixed knots for the inner and the outer steel tube, and a vacuum automatic held system. The fixed knots for the inner and the outer steel tube are arranged alternately with plenty inner steel tube sliding brackets, which forms an independent section of pipe. Outer wall of the outer steel tube embeds a temperature detecting piece. Combination of the multi-curtained vacuum heat-preserved technology with the conventional antiseptic heat-preserved technology makes the diameter of the outer steel pipe shortened and the cost depressed, and eliminates cold bridge effect. The vacuum automatic held system is provided with a pipe leak monitoring function at the same time, which decreases the heat loss in running of the pipe network. Dynamic monitoring of whether the pipe network has a leakage, and finding and slaking the potential safety hazard in time, can increase the reliability of the safe running.
Description
Technical field:
The utility model belongs to the insulation pipe field, relates to a kind of screen vacuum multi composite anti-corrosive insulation direct-burried steam tube, relates in particular to steel pipe and does " steel bushing steel " complex heat-preservation direct-burried steam tube pipe of waterproof pillar and the direct-burried steam tube that " steel bushing steel " vacuumizes insulation.
Technical background:
Various conventional direct-burried steam tube of the prior art, comprise with steel pipe and do " steel bushing steel " complex heat-preservation direct-burried steam tube of waterproof pillar and the direct-burried steam tube that " steel bushing steel " vacuumizes insulation, all be interior steel pipe and outside the very thick conventional thermal insulating material of filling between the interlayer that forms of steel pipe, the outer wall coated anti-corrosion layer of outer steel pipe.Make that outer diameter of steel tube is big, cost is high, and have the defective of cold bridge effect.The cold bridge effect causes anticorrosive coat very fast destroyed easily.The patent No. is that 00252470 utility model patent discloses a kind of " high-temperature steam multi-screen heat insulation directly buried type heating power pipe ", and the patent No. is that 01216322 utility model patent discloses a kind of " vacuum composite adiabatic pipeline ".Though above-mentioned technology has many good qualities, but still there is the problem of the higher and cold bridge effect of cost.The patent No. is that 01107799 patent of invention discloses a kind of " vacuum composite adiabatic pipeline and leakage detection method ", and this invention is to control vacuum priming of pump and parking and realize Leak testtion with the variation of absolute pressure between interior steel pipe and outer steel pipe interlayer.The deficiency of this invention is, needs the very high pressure vacuum gauge of precision (vacuscope) could realize the present invention, and its vacuscope price is up to thousands of units and be afraid of that shake is frangible, is not suitable for using in the building site.
At the deficiency of above-mentioned technology, the utility model provides a kind of screen vacuum multi composite anti-corrosive insulation direct-burried steam tube.Screen vacuum multi heat preservation technology and conventional corrosion-resistant thermal insulation technology are combined together, outer diameter of steel tube is diminished, cost reduces, and can eliminate the cold bridge effect, prolongs pipe network working life.Control vacuum priming of pump and parking with outer steel tube surface variation of temperature, its adaptability is stronger, the higher and required expense of reliability is low, with outer steel tube surface variation of temperature control vacuum priming of pump and parking, make the operation thermal loss small vacuum pump operating cost of pipeline low.Whether pipe network the enforcement dynamic monitoring is taken place to leak can in time be found and eliminate safe hidden trouble, and improves the reliability of safe operation.
Summary of the invention:
Develop a kind of screen vacuum multi composite anti-corrosive insulation direct-burried steam tube, comprise interior steel pipe, outer steel pipe, compensator etc., it is characterized in that: pipeline adopts screen vacuum multi composite anti-corrosive thermal insulation layer, and interior steel pipe and compensator are being supported by sliding support and outer and inner tube fixed knot and be positioned at the scalable slip of outer steel pipe; Vacuum maintenance system automatically is located at an end of pipeline, and vacuum pump is evacuated the outer and inner tube interlayer by exhaust tube.
Its described screen vacuum multi composite anti-corrosive thermal insulation layer is to establish the screen vacuum multi thermal insulation layer between outer and inner tube, and outer steel pipe is coated with polyurethane foam insulation layer, and foam heat-insulation layer is outward the waterproof protective case.
Dunnage and the interior outer wall of steel pipe of steel pipe sliding support were fixing also axial arranged in the shape of a spiral in it was described, the ball that on same radially section, has only a support with outside the steel pipe inwall contact.The cavity spacer ring of its described outer and inner tube fixed knot and outer and inner tube seal welding, connecting tube is provided with valve, crosses over the welding of cavity spacer ring and outer tube, and the outer steel pipe at cavity spacer ring place is established the composite anti-corrosive thermal insulation layer.
Its described temperature control vacuum keeps system automatically, by exhaust tube, vacuum pump, pressure vacuum gauge, bury the thermoscope that is attached on the outer outer wall of steel pipe and temp controller joining with it etc. and constitute.
Advantage of the present invention:
A, screen vacuum multi heat preservation technology and conventional corrosion-resistant thermal insulation technology are combined together, outer diameter of steel tube is diminished, cost reduces.
B, eliminated the cold bridge effect.
C, vacuum maintenance system automatically make the operation thermal loss of pipeline be in minimum all the time, and can whether the enforcement dynamic monitoring take place to leak to pipe network, eliminate safe hidden trouble.
D, control vacuum priming of pump and parking with outer steel tube surface variation of temperature than with the variation of absolute pressure between the inner and outer pipes interlayer, adaptability is stronger, the higher and required expense of reliability can reduce by tens times.
Description of drawings:
Fig. 1 is that the utility model is arranged schematic representation.
Fig. 2 is a radially A-A sectional view of the utility model.
Fig. 3 is the axial sectional view of the utility model outer and inner tube fixed knot.
Be described further below in conjunction with accompanying drawing, show among the figure: the 1st, interior steel pipe; The 2nd, aluminium foil; The 3rd, glass cloth; The 4th, the inorganic heat insulating fiber layer; The 5th, heat-reflecting layer; The 6th, outer steel pipe; The 7th, outer corrosion-inhibiting coating of steel pipe; The 8th, the polyurethane foam insulation layer; The 9th, the waterproof protective case; The 10th, hard insulating material; The 11st, with the cavity spacer ring of outer and inner tube welding; The 12nd, the cross over pipe of leap spacer ring; The 13rd, valve; The 14th, vacuum pump; The 15th, pressure vacuum gauge; The 16th, bury the thermoscope that is attached on the outer outer wall of steel pipe; The 17th, with the joining temp controller of thermoscope; The 18th, the dunnage of interior steel pipe sliding support; The 19th, hollow ball; The 20th, the ball axle.
Fig. 1 shows, screen vacuum multi composite anti-corrosive insulation direct-burried steam tube, steel pipe 1 in comprising, outer steel pipe 6, pressure vacuum gauge 15, vacuum pump 14, with bury compositions such as the joining temp controller 17 of the thermoscope that is attached on the outer outer wall of steel pipe, outer and inner tube fixed knot, interior steel pipe sliding support.Outer and inner tube fixed knot and a plurality of interior steel pipe sliding support are alternately arranged, and interior steel pipe 1 is steel pipe 6 interior telescopic slide outside.The exhaust tube of vacuum pump 14 is connected with interior steel pipe 1 and outer steel pipe 6 formed toroidal cavities, and adjacent pipeline section forms air communication channel by connecting tube, and connecting tube is provided with valve.Close all valves and can form a plurality of independently vacuum heat-preserving pipeline sections.
Fig. 2 is the radially A-A sectional view at steel pipe sliding support place in the utility model.Show among the figure, interior steel pipe 1 is positioned at outer steel pipe 6 to be supported by sliding support, interior steel pipe 1 periphery is wrapped up in and is tied up the screening thermosphere that is alternately rearranged by laminated aluminium foil 2 and glass cloth 3, the screening thermosphere is wrapped up in outward and is tied up inorganic heat insulating fiber layer 4, its outer wrapping up in is tied up heat-reflecting layer 5, the gap is left with outer steel pipe 6 inwalls in reflecting layer 5, and the outer wall of outer steel pipe 6 scribbles anticorrosive coat 7 and polyurethane foam insulation layer 8, is waterproof protective case 9 outside the foam layer 8.Interior steel pipe sliding support is axial arranged in the shape of a spiral along interior outer wall of steel pipe, and on the outer wall of steel pipe, dunnage 18 was porose, is installed with ball axle 20 in the hole in the dunnage 18 of interior steel pipe sliding support was welded in, and was installed with ball 19 on the axle.The roller that on same radially section, has only a support with outside the steel pipe inwall contact.
Fig. 3 is the axial sectional view of the utility model outer and inner tube fixed knot.
Show among the figure, interior steel pipe 1 is positioned at outer steel pipe 6, cavity spacer ring 11 welds mutually with interior steel pipe 1 and outer steel pipe 6, can establish along the axial arranged polylith stiffening plate of inner and outer pipes in the one or both sides of cavity spacer ring 11, the outer wall of the outer steel pipe in the about 2 meters scopes in cavity spacer ring both sides is established the composite heat-insulating layer of being made up of hard insulating material 10 and polyurethane foam insulation layer 8, and thermal insulation layer is outward a waterproof protective case 9.Cross over pipe 12 is crossed over being connected with outer steel pipe 6 formed toroidal cavities by interior steel pipe 1 of spacer rings 11 and spacer ring both sides, and cross over pipe is provided with valve 13, closes or Open valve 13, the air ventilation between capable of blocking or UNICOM's spacer ring both sides adjacent tubular segments.
The utility model pipe leakage monitoring function is achieved in that
Pipeline is done air tightness test after gang welding finishes at the construction field (site), bleeds off air after qualified, starts vacuum pump 14 air in the inner and outer pipes toroidal cavity is extracted out, realizes vacuum heat-preserving.Vacuum pump can make to be in all the time between the inner and outer pipes interlayer than higher degree of vacuum with the operation long-time running of pipe network, and at this moment the thermal loss of pipe network is very small.Vacuum pump also can intermitten service, and it starts automatically with stopping controls with outer outer wall of steel pipe surface temperature.For example: the permission constant interval of setting outer outer wall of steel pipe surface temperature in advance, vacuum pump starts when temperature is raised to CLV ceiling limit value, along with the absolute pressure between vacuum priming of pump inner and outer pipes interlayer descends, the vacuum heat-preserving performance of pipeline improves, the surface temperature of outer outer wall of steel pipe descends, vacuum pump automatic stopping when rolling back lower limit.Can prolong the working life of vacuum pump like this and reduce operating cost.If outer outer wall of steel pipe surface temperature variation abnormality illustrates that leaking appears in pipeline.The present invention also can root a tree name inner and outer pipes interlayer between the variation control vacuum pump of absolute pressure start automatically and stop, set absolute pressure permission excursion between the inner and outer pipes interlayer in advance, vacuum pump starts when absolute pressure is raised to CLV ceiling limit value between the inner and outer pipes interlayer, along with the absolute pressure between vacuum priming of pump inner and outer pipes interlayer descends, vacuum pump stops when reducing to lower limit.If absolute pressure variation abnormality between the inner and outer pipes interlayer illustrates that leaking appears in pipeline.Whether pipeline the realization dynamic monitoring being taken place to leak, can in time find and eliminate safe hidden trouble, improves the reliability of safe operation.
By enforcement of the present utility model, can reduce the thermal loss of pipe network, improve the reliability of safe operation, in time find leakage point and on-call maintenance, can effectively prolong the working life of pipe network.
Claims (5)
1, a kind of screen vacuum multi composite anti-corrosive insulation direct-burried steam tube, comprise interior steel pipe, outer steel pipe, compensator etc., it is characterized in that: pipeline adopts screen vacuum multi composite anti-corrosive thermal insulation layer, and interior steel pipe and compensator are being supported by sliding support and outer and inner tube fixed knot and be positioned at the scalable slip of outer steel pipe; Vacuum maintenance system automatically is located at an end of pipeline, and vacuum pump is evacuated the outer and inner tube interlayer by exhaust tube.
2, according to the described screen vacuum multi composite anti-corrosive insulation of claim 1 direct-burried steam tube, it is characterized in that described screen vacuum multi composite anti-corrosive thermal insulation layer, be to establish the screen vacuum multi thermal insulation layer between outer and inner tube, outer steel pipe is coated with polyurethane foam insulation layer, and foam heat-insulation layer is outward the waterproof protective case.
3, according to the described screen vacuum multi composite anti-corrosive insulation of claim 1 direct-burried steam tube, it is characterized in that described in dunnage and the interior outer wall of steel pipe of steel pipe sliding support fixing also axial arranged in the shape of a spiral, the ball that on same radially section, has only a support with outside the steel pipe inwall contact.
4, according to the described screen vacuum multi composite anti-corrosive insulation of claim 1 direct-burried steam tube, the cavity spacer ring and the outer and inner tube seal welding that it is characterized in that described outer and inner tube fixed knot, connecting tube is provided with valve, cross over the welding of cavity spacer ring and outer tube, the outer steel pipe at cavity spacer ring place is established the composite anti-corrosive thermal insulation layer.
5, by the described screen vacuum multi composite anti-corrosive insulation of claim 1 direct-burried steam tube, it is characterized in that described temperature control vacuum keeps system automatically, by exhaust tube, vacuum pump, pressure vacuum gauge, bury the thermoscope that is attached on the outer outer wall of steel pipe and temp controller joining etc. and constitute with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294415 CN2611722Y (en) | 2002-12-18 | 2002-12-18 | Multi-shielded vacuum composite corrosion-proof thermal insulating and directly buryed steam pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294415 CN2611722Y (en) | 2002-12-18 | 2002-12-18 | Multi-shielded vacuum composite corrosion-proof thermal insulating and directly buryed steam pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2611722Y true CN2611722Y (en) | 2004-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02294415 Expired - Fee Related CN2611722Y (en) | 2002-12-18 | 2002-12-18 | Multi-shielded vacuum composite corrosion-proof thermal insulating and directly buryed steam pipe |
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| Country | Link |
|---|---|
| CN (1) | CN2611722Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416149C (en) * | 2006-10-20 | 2008-09-03 | 吕迎智 | Direct-buried steam pipeline heat-insulation fixing rack |
| CN102352939A (en) * | 2011-10-13 | 2012-02-15 | 中国市政工程华北设计研究总院 | Online constant-pressure vacuum composite heat-preserving and cold-preserving pipeline system for steel outer protecting pipe |
| CN102679168A (en) * | 2012-06-11 | 2012-09-19 | 中国平煤神马能源化工集团有限责任公司供热分公司 | Method for searching for leakage point of steel-wrapped-steel direct buried steam pipeline |
| CN103994332A (en) * | 2014-04-16 | 2014-08-20 | 大连科华热力管道有限公司 | Steam directly-buried pipe network with leakage warning device |
| CN104676165A (en) * | 2015-01-29 | 2015-06-03 | 江苏广通管业制造有限公司 | Novel vacuum connecting pipe |
| CN105351688A (en) * | 2015-11-28 | 2016-02-24 | 江苏兰宇保温科技有限公司 | Vacuum thermal insulation structure and preparation method thereof |
| CN105806100A (en) * | 2016-04-18 | 2016-07-27 | 刘利平 | Coaxial fin type heat exchanger |
| CN108397643A (en) * | 2018-04-16 | 2018-08-14 | 成都科瑞尔低温设备有限公司 | Vacuum and low temperature pipe-line system |
| CN109099213A (en) * | 2018-09-27 | 2018-12-28 | 江苏清源管道技术有限公司 | A kind of vacuum pipe anti-corrosive apparatus and construction technology |
| CN112145274A (en) * | 2020-10-09 | 2020-12-29 | 南昌智能新能源汽车研究院 | Integrated vacuum layered heat-preservation exhaust pipe |
-
2002
- 2002-12-18 CN CN 02294415 patent/CN2611722Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416149C (en) * | 2006-10-20 | 2008-09-03 | 吕迎智 | Direct-buried steam pipeline heat-insulation fixing rack |
| CN102352939A (en) * | 2011-10-13 | 2012-02-15 | 中国市政工程华北设计研究总院 | Online constant-pressure vacuum composite heat-preserving and cold-preserving pipeline system for steel outer protecting pipe |
| CN102679168A (en) * | 2012-06-11 | 2012-09-19 | 中国平煤神马能源化工集团有限责任公司供热分公司 | Method for searching for leakage point of steel-wrapped-steel direct buried steam pipeline |
| CN103994332A (en) * | 2014-04-16 | 2014-08-20 | 大连科华热力管道有限公司 | Steam directly-buried pipe network with leakage warning device |
| CN103994332B (en) * | 2014-04-16 | 2017-02-01 | 大连科华热力管道有限公司 | Steam directly-buried pipe network with leakage warning device |
| CN104676165A (en) * | 2015-01-29 | 2015-06-03 | 江苏广通管业制造有限公司 | Novel vacuum connecting pipe |
| CN105351688A (en) * | 2015-11-28 | 2016-02-24 | 江苏兰宇保温科技有限公司 | Vacuum thermal insulation structure and preparation method thereof |
| CN105351688B (en) * | 2015-11-28 | 2017-08-11 | 江苏兰宇保温科技有限公司 | vacuum insulation structure and preparation method thereof |
| CN105806100A (en) * | 2016-04-18 | 2016-07-27 | 刘利平 | Coaxial fin type heat exchanger |
| CN108397643A (en) * | 2018-04-16 | 2018-08-14 | 成都科瑞尔低温设备有限公司 | Vacuum and low temperature pipe-line system |
| CN109099213A (en) * | 2018-09-27 | 2018-12-28 | 江苏清源管道技术有限公司 | A kind of vacuum pipe anti-corrosive apparatus and construction technology |
| CN112145274A (en) * | 2020-10-09 | 2020-12-29 | 南昌智能新能源汽车研究院 | Integrated vacuum layered heat-preservation exhaust pipe |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |