CN102777730A - Directly-buried steam pipeline for long-distance transportation - Google Patents
Directly-buried steam pipeline for long-distance transportation Download PDFInfo
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- CN102777730A CN102777730A CN2012102583250A CN201210258325A CN102777730A CN 102777730 A CN102777730 A CN 102777730A CN 2012102583250 A CN2012102583250 A CN 2012102583250A CN 201210258325 A CN201210258325 A CN 201210258325A CN 102777730 A CN102777730 A CN 102777730A
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Abstract
The invention relates to a directly-buried steam pipeline for long-distance transportation, specifically to a pipeline which is used for urban cogeneration central heating and which is improved according to the underground directly-buried main pipe network, belonging to the technical field of energy conservation and consumption reduction of heat distribution pipelines in the heating field. Advanced porous fiber materials are utilized as a support body, newest nanoscale particles are added to compose a soft coil which is flexible, light, temperature resistant (540 degrees centigrade), hydrophobic and noncombustible, and which has a low thermal conductivity factor lambda that is not greater than 0.003, and pure aluminum foils with high reflection performance of 50-90% are hierarchically filled according to the need, and are organically combined with a heat insulation bracket to compose a new composite heat insulation structure which has small heat transfer coefficient, high radiation shielding rate and no convection radiation. The bracket utilizes a plurality of new locking-plate type structures so as to reduce heat transfer area, and also coordinates with high-efficiency heat insulation materials to securely transfer thrust of the pipeline, also insulate heat, keep warm and prevent heat flow leaking.
Description
Technical field
The present invention relates to that a kind of length is defeated use direct embedment steel pipe, specifically relate to a kind of pipeline that is used for the direct buried person in charge's network technology transformation of cities and towns cogeneration of heat and power central heat supply, it belongs to the energy-saving and cost-reducing technical field of heat distribution pipeline in the heat supply field.
Background technique
Along with development in science and technology, the high-efficient energy-saving environment friendly material continues to bring out, and impels specialty products structure, process application to bring in constant renewal in development., countries in the world initial from twentieth century all to cutting down the consumption of energy, are reduced and are polluted, and build low carbonization city and stride forward.We are the beginning to develop and comprise on the autonomous innovation basis needs that adapt to the world-technology progress of more than ten years in the past; Development has been innovated a kind of energy-efficient; Reduce to pollute, beautify the environment, satisfy the urban planning requirement, build low carbonization urban heating " the long defeated new technology of direct embedment steel pipe; steam engineering practice and test be respond well to meet or exceed national relevant technical standard requirement, marches toward advanced international standard.At present, the startup of power pipe network or the white-out of operating water of condensation are very important, and pipeline is incubated contingency water inlet or inner and outer pipe in the interlayer into water that breaks outward; Unexpected wound in the burn into of the long-term pipeline that uses, underground or the construction causes the fully occupied that floods pipe, floating pipe that generation is arranged; And the problems such as pipe network operation, heat waste that have a strong impact on such as stop up in the hydrophobic joint.
Summary of the invention
In view of the problem that existing procucts exist, the purpose of patent of the present invention is to provide the adiabatic environmental protection and energy saving of a novel and high-efficiency, realizes the long defeated direct embedment steel pipe of using of the low carbonization in city.
To achieve these goals; The technological scheme that the present invention adopted is the defeated direct embedment steel pipe of using of a kind of length; It comprises: following hydrophobic joint, movable external and internal fixation bearing, threeway, band sliding support straight tube, compensator and elbow; The sliding support of band sliding support straight tube is installed on straight tube inside, and following hydrophobic joint, movable external and internal fixation bearing, threeway, band sliding support straight tube, compensator and elbow are arranged according to installation requirement, are provided with a compensator between two fixed bearings.
It comprises the working steel tube and the outer pillar of long distances high temperature media said band sliding support straight tube; Said outer pillar is made up of the three-dimensional glass steel that the external protective steel tube and the outside thereof replace compound chopped strand-resin and two-dimentional non-twist glass woven roving; Be provided with multi shields insulation vacuum heat-insulating layer and working steel tube assembly between working steel tube and the outer pillar, said working steel tube assembly is made up of ring support and the roll shaft and the slip roll shaft of movable set on roll shaft that are installed on the ring support outside; Be provided with high-strength heat isolating material between working steel tube and the working steel tube assembly; Be provided with air layer between outer pillar and the multi shields insulation vacuum heat-insulating layer; The outer pillar outside is provided with anticorrosive coat.
Said movable external and internal fixation bearing; It is made up of internal fixation bearing and outer fixing bearing; The internal fixation bearing is arranged on the annular space position between the inside and outside steel pipe of band sliding support straight tube at interval; The internal fixation bearing is made up of band groove annular stop baffle plate, band groove annular thrust block plate, activity thrust tube sheet and dual torus insulating, and said band groove annular stop baffle plate is arranged on the working steel tube; Said band groove annular thrust block plate is arranged at and is with on the corresponding external protective steel tube madial wall in groove annular stop baffle plate position; Band groove annular stop baffle plate and the hollow cavity of being with the corresponding formation of groove annular thrust block plate; Activity thrust tube sheet is inserted in the hollow cavity; The both sides of activity thrust tube sheet are changed and are laid with the dual torus insulating on the face; The humidity discharging pipe is provided with and passes outer pillar, and on fixing and the outer pillar, said outer fixing bearing is made up of an annular slab that is welded on the external protective steel tube external cylindrical surface.
Said down hydrophobic joint is by closure plate, ellipse head, the first outer pillar, drip pan, outer pillar, support round steel, thermal insulation layer, drain pipe, insulation sealing cap, packing plate and sieve plate; Drip pan is connected with working pipe, and fixes with outer pillar through supporting pipe, is provided with the 3rd thermal insulation layer between outer pillar and the working pipe; Drip pan top is provided with sieve plate, the sediment deposition district is left in the bottom; The drip pan outside is provided with the first outer pillar, and the first outer pillar bottom is provided with closure plate, and the first outer pillar minimum point is provided with the draining test valve; The drip pan bottom is provided with ellipsoidal head; Sieve plate is arranged on the drip pan, and the corresponding side with the draining test valve of the first outer pillar is provided with drain pipe, and drain pipe is provided with insulation sealing cap and packing plate.
Said compensator constitutes by strengthening pipe box and compensator body, and closure plate is connected with reinforcing sleeve with outer pillar, and outer pillar and reinforcing sleeve are two separate space; The enclosed space of the annular space of outer pillar and compensator body and outer pillar and reinforcing sleeve is thermal insulation layer; Dunnage plays support, against shock to the compensator body and prevents the effect of compensator post unstability.
Said multi shields insulation vacuum heat-insulating layer is followed successively by tinfoil paper reflecting layer, first thermal insulation layer, first tinfoil paper reflection cloth, second thermal insulation layer and second tinfoil paper reflection cloth successively by foil shielding layer and ultra-fine centrifugally glass-wool thermal insulation layer stacked the forming that alternate.
Said floating tube sheet should leave certain interval during plug-in mounting in two grooves.
The said working steel tube assembly outside is provided with three groups of rolling running rollers at least.
Said multi shields insulation vacuum heat-insulating layer is the overall vacuum layer.
Said water collect tank adopts multi shields insulation radiation insulating structure and three-dimensional glass steel anticorrosion structure.
The invention has the advantages that: adopting advanced porous fibrous material is support, adds up-to-date nano_scale particle, constitutes softness, light weight, heatproof (< 540 ℃) hydrophobic and does not fire; The soft coiled material of thermal conductivity low (λ≤0.003); And as required layering dose high reflection can (reaching 50%～90%) pure aluminum foil, with the heat insulated supporter organic assembling, constitute that to have a heat-transfer coefficient little; The radiation-screening rate is high, the new compound insulation structure of unmatchful wandering heat.And support adopts polylith holding plate type new structure both to reduce heat transfer area, has both used with the thermal insulation material fit and has made its pipeline thrust safe transfer, and adiabatic heat-insulation reduces hot-fluid and leaks again.Adopt computer control heat stable resin and glass (E level) automation to intersect winding, in add woven lattice cloth, or heat-resisting, the acidproof reinforcing material of nonwoven.According to design demand, the continuous anticorrosive coat of design different-thickness.For improving the adhesion strength of anticorrosive coat and steel pipe; Automatically the research and development continuous injection adds layer short glass fiber or automatic doffing chopped strand; To improve the stereochemical structure that steel and fiber, fiber and fiber are seen; Overall bonding strength improves resistant to water penetration property, bondingly between enhancement layer prevents layering or peels off with bottom.Be furnished with two slip-type expansion joint insulating structures, scientifically solve direct embedment steel pipe design compensation equipment and cause the pipeline drawing crack because of thermal walking, thermal insulation layer water inlet makes pipeline emit vapour, thermo-pollution environment or have an accident etc.
Description of drawings
Fig. 1 multi shields insulation radiation insulating structure schematic representation;
The movable external and internal fixation seat structure of Fig. 2 schematic representation;
The two sleeve direct-burried insulation of Fig. 3 compensator structure schematic representation;
Hydrophobic joint structural representation under Fig. 4;
The sectional view of hydrophobic joint under Fig. 5;
Fig. 6 schematic representation of the present invention;
Among the figure: 1, band sliding support straight tube, 2, movable external and internal fixation bearing, 3, compensator, 4, hydrophobic joint down, 5, threeway, 6, elbow; 101, working pipe, 102, the tinfoil paper reflecting layer, 103, first thermal insulation layer, 104, first tinfoil paper reflection cloth, 105, second thermal insulation layer, 106, second tinfoil paper reflection cloth; 107, air layer, 108, outer pillar, 109, anticorrosive coat, 201, postive stop baffle, 202, thrust block plate, 203, activity thrust tube sheet; 204, humidity discharging pipe, 205, the dual torus insulating, 301, strengthen pipe box outward, 302, dunnage, 303, thermal insulation layer; 304, closure plate, 401, ellipsoidal head, 402, the first outer pillar, 403, drip pan, 404, support round steel; 405, the 3rd thermal insulation layer, 406, drain pipe, 407, the insulation sealing cap, 408, the packing plate, 409, sieve plate.
Embodiment
Embodiment 1
The defeated direct embedment steel pipe of using of a kind of length; It comprises: following hydrophobic joint 4, movable external and internal fixation bearing 2, threeway 5, band sliding support straight tube 1, compensator 3 and elbow 6, it puts in order and is straight tube 4, compensator 3, movable external and internal fixation bearing 2 and the elbow 6 of hydrophobic joint 4, movable external and internal fixation bearing 2, threeway 5, band sliding support.
It comprises the working steel tube 101 and the outer pillar 108 of long distances high temperature media said band sliding support straight tube; Said outer pillar 108 is made up of the three-dimensional glass steel that the external protective steel tube and the outside thereof replace compound chopped strand-resin and two-dimentional non-twist glass woven roving; Be provided with multi shields insulation vacuum heat-insulating layer and working steel tube assembly between working steel tube 101 and the outer pillar 108, said working steel tube assembly is made up of ring support and the roll shaft and the slip roll shaft of movable set on roll shaft that are installed on the ring support outside; Be provided with high-strength heat isolating material between working steel tube 101 and the working steel tube assembly; Be provided with air layer 107 between outer pillar 108 and the multi shields insulation vacuum heat-insulating layer; Outer pillar 108 outsides are provided with anticorrosive coat 109.
Said movable external and internal fixation bearing; It is made up of internal fixation bearing and outer fixing bearing; The internal fixation bearing is arranged on the annular space position between the inside and outside steel pipe of band sliding support straight tube at interval; The internal fixation bearing is made up of band groove annular stop baffle plate 201, band groove annular thrust block plate 202, activity thrust tube sheet 203 and dual torus insulating 205, and said band groove annular stop baffle plate 201 is arranged on the working steel tube 101; Said band groove annular thrust block plate 202 is arranged at and is with on corresponding external protective steel tube 108 madial walls in groove annular stop baffle plate 201 positions; Band groove annular stop baffle plate 201 and the hollow cavity of being with the 202 corresponding formation of groove annular thrust block plate; Activity thrust tube sheet 203 is inserted in the hollow cavity; The both sides of activity thrust tube sheet 202 are changed and are laid with dual torus insulating 205 on the face; Humidity discharging pipe 204 is provided with and passes outer pillar 108, and on fixing and the outer pillar 108, said outer fixing bearing is made up of an annular slab that is welded on the external protective steel tube external cylindrical surface.
Said down hydrophobic joint by the outer pillar of closure plate 304, ellipse head 401, the first 402, drip pan 403, outer pillar 108, support round steel 404, thermal insulation layer 405, drain pipe 406, be incubated sealing cap 407, packing plate 408 and sieve plate 409; Drip pan 403 is connected with working pipe, and fixes with outer pillar 108 through supporting pipe 404, is provided with the 3rd thermal insulation layer 405 between outer pillar 108 and the working pipe; Drip pan 403 tops are provided with sieve plate 409, the sediment deposition district is left in the bottom; Drip pan 403 outsides are provided with first outer pillar 402, the first outer pillars, 402 bottoms and are provided with closure plate 304, the first outer pillar 402 minimum points and are provided with the draining test valve; Drip pan 403 bottoms are provided with ellipsoidal head 401; Have the corresponding side with the draining test valve of sieve plate 409, the first outer pillars 401 to be provided with drain pipe on the drip pan 403, drain pipe is provided with insulation sealing cap 407 and packing plate 408.
Said compensator constitutes with the compensator body by strengthening pipe box 301, and closure plate 304 is connected with reinforcing sleeve 301 with outer pillar 108, and outer pillar 108 is two separate space with reinforcing sleeve 301; Outer pillar 108 is thermal insulation layer 303 with the annular space of compensator body and the enclosed space of outer pillar 108 and reinforcing sleeve 301; 302 pairs of compensator bodies of dunnage play support, against shock and prevent the effect of compensator post unstability.
Said multi shields insulation vacuum heat-insulating layer is successively by foil shielding layer and ultra-fine centrifugally glass-wool thermal insulation layer stacked the forming that alternate, and is followed successively by tinfoil paper reflecting layer 102, first thermal insulation layer 103, first tinfoil paper reflection cloth 104, second thermal insulation layer 105 and second tinfoil paper reflection cloth 106.
Embodiment 2
The defeated direct embedment steel pipe of using of a kind of length; It comprises: following hydrophobic joint 4, movable external and internal fixation bearing 2, threeway 5, band sliding support straight tube 1, compensator 3 and elbow 6, it puts in order and is movable external and internal fixation bearing 2, hydrophobic joint 4, compensator 3, band sliding support straight tube 1, movable external and internal fixation bearing 2, band sliding support straight tube 1, elbow 6, band sliding support straight tube 1 and movable external and internal fixation bearing 2.
It comprises the working steel tube 101 and the outer pillar 108 of long distances high temperature media said band sliding support straight tube; Said outer pillar 108 is made up of the three-dimensional glass steel that the external protective steel tube and the outside thereof replace compound chopped strand-resin and two-dimentional non-twist glass woven roving; Be provided with multi shields insulation vacuum heat-insulating layer and working steel tube assembly between working steel tube 101 and the outer pillar 108, said working steel tube assembly is made up of ring support and the roll shaft and the slip roll shaft of movable set on roll shaft that are installed on the ring support outside; Be provided with high-strength heat isolating material between working steel tube 101 and the working steel tube assembly; Be provided with air layer 107 between outer pillar 108 and the multi shields insulation vacuum heat-insulating layer; Outer pillar 108 outsides are provided with anticorrosive coat 109.
Said movable external and internal fixation bearing; It is made up of internal fixation bearing and outer fixing bearing; The internal fixation bearing is arranged on the annular space position between the inside and outside steel pipe of band sliding support straight tube at interval; The internal fixation bearing is made up of band groove annular stop baffle plate 201, band groove annular thrust block plate 202, activity thrust tube sheet 203 and dual torus insulating 205, and said band groove annular stop baffle plate 201 is arranged on the working steel tube 101; Said band groove annular thrust block plate 202 is arranged at and is with on corresponding external protective steel tube 108 madial walls in groove annular stop baffle plate 201 positions; Band groove annular stop baffle plate 201 and the hollow cavity of being with the 202 corresponding formation of groove annular thrust block plate; Activity thrust tube sheet 203 is inserted in the hollow cavity; The both sides of activity thrust tube sheet 202 are changed and are laid with dual torus insulating 205 on the face; Humidity discharging pipe 204 is provided with and passes outer pillar 108, and on fixing and the outer pillar 108, said outer fixing bearing is made up of an annular slab that is welded on the external protective steel tube external cylindrical surface.
Said down hydrophobic joint by the outer pillar of closure plate 304, ellipse head 401, the first 402, drip pan 403, outer pillar 108, support round steel 404, thermal insulation layer 405, drain pipe 406, be incubated sealing cap 407, packing plate 408 and sieve plate 409; Drip pan 403 is connected with working pipe, and fixes with outer pillar 108 through supporting pipe 404, is provided with the 3rd thermal insulation layer 405 between outer pillar 108 and the working pipe; Drip pan 403 tops are provided with sieve plate 409, the sediment deposition district is left in the bottom; Drip pan 403 outsides are provided with first outer pillar 402, the first outer pillars, 402 bottoms and are provided with closure plate 304, the first outer pillar 402 minimum points and are provided with the draining test valve; Drip pan 403 bottoms are provided with ellipsoidal head 401; Have the corresponding side with the draining test valve of sieve plate 409, the first outer pillars 401 to be provided with drain pipe on the drip pan 403, drain pipe is provided with insulation sealing cap 407 and packing plate 408.
Said compensator constitutes with the compensator body by strengthening pipe box 301, and closure plate 304 is connected with reinforcing sleeve 301 with outer pillar 108, and outer pillar 108 is two separate space with reinforcing sleeve 301; Outer pillar 108 is thermal insulation layer 303 with the annular space of compensator body and the enclosed space of outer pillar 108 and reinforcing sleeve 301; 302 pairs of compensator bodies of dunnage play support, against shock and prevent the effect of compensator post unstability.
Said multi shields insulation vacuum heat-insulating layer is successively by foil shielding layer and ultra-fine centrifugally glass-wool thermal insulation layer stacked the forming that alternate, and is followed successively by tinfoil paper reflecting layer 102, first thermal insulation layer 103, first tinfoil paper reflection cloth 104, second thermal insulation layer 105 and second tinfoil paper reflection cloth 106.
Claims (9)
1. one kind long defeated direct embedment steel pipe of using; It comprises: following hydrophobic joint, movable external and internal fixation bearing, threeway, band sliding support straight tube, compensator and elbow; The sliding support of band sliding support straight tube is installed on straight tube inside; Hydrophobic joint, movable external and internal fixation bearing, threeway, band sliding support straight tube, compensator and elbow are arranged according to installation requirement down, are provided with a compensator between two fixed bearings.
2. the defeated direct embedment steel pipe of using of a kind of length according to claim 1; It is characterized in that: it comprises the working steel tube and the outer pillar of long distances high temperature media said band sliding support straight tube; Said outer pillar is made up of the three-dimensional glass steel that the external protective steel tube and the outside thereof replace compound chopped strand-resin and two-dimentional non-twist glass woven roving; Be provided with multi shields insulation vacuum heat-insulating layer and working steel tube assembly between working steel tube and the outer pillar, said working steel tube assembly is made up of ring support and the roll shaft and the slip roll shaft of movable set on roll shaft that are installed on the ring support outside; Be provided with high-strength heat isolating material between working steel tube and the working steel tube assembly; Be provided with air layer between outer pillar and the multi shields insulation vacuum heat-insulating layer; The outer pillar outside is provided with anticorrosive coat.
3. the defeated direct embedment steel pipe of using of a kind of length according to claim 1; It is characterized in that: said movable external and internal fixation bearing; It is made up of internal fixation bearing and outer fixing bearing; The internal fixation bearing is arranged on the annular space position between the inside and outside steel pipe of band sliding support straight tube at interval; The internal fixation bearing is made up of band groove annular stop baffle plate, band groove annular thrust block plate, activity thrust tube sheet and dual torus insulating, and said band groove annular stop baffle plate is arranged on the working steel tube; Said band groove annular thrust block plate is arranged at and is with on the corresponding external protective steel tube madial wall in groove annular stop baffle plate position; Band groove annular stop baffle plate and the hollow cavity of being with the corresponding formation of groove annular thrust block plate; Activity thrust tube sheet is inserted in the hollow cavity; The both sides of activity thrust tube sheet are changed and are laid with the dual torus insulating on the face; The humidity discharging pipe is provided with and passes outer pillar, and on fixing and the outer pillar, said outer fixing bearing is made up of an annular slab that is welded on the external protective steel tube external cylindrical surface.
4. the defeated direct embedment steel pipe of using of a kind of length according to claim 1; It is characterized in that: said down hydrophobic joint is by closure plate, ellipse head, the first outer pillar, drip pan, outer pillar, support round steel, thermal insulation layer, drain pipe, insulation sealing cap, packing plate and sieve plate; Drip pan is connected with working pipe, and fixes with outer pillar through supporting pipe, is provided with the 3rd thermal insulation layer between outer pillar and the working pipe; Drip pan top is provided with sieve plate, the sediment deposition district is left in the bottom; The drip pan outside is provided with the first outer pillar, and the first outer pillar bottom is provided with closure plate, and the first outer pillar minimum point is provided with the draining test valve; The drip pan bottom is provided with ellipsoidal head; Sieve plate is arranged on the drip pan, and the corresponding side with the draining test valve of the first outer pillar is provided with drain pipe, and drain pipe is provided with insulation sealing cap and packing plate; Said compensator constitutes by strengthening pipe box and compensator body, and closure plate is connected with reinforcing sleeve with outer pillar, and outer pillar and reinforcing sleeve are two separate space; The enclosed space of the annular space of outer pillar and compensator body and outer pillar and reinforcing sleeve is thermal insulation layer; Dunnage plays support, against shock to the compensator body and prevents the effect of compensator post unstability.
5. the defeated direct embedment steel pipe of using of a kind of length according to claim 2; It is characterized in that: said multi shields insulation vacuum heat-insulating layer is followed successively by tinfoil paper reflecting layer, first thermal insulation layer, first tinfoil paper reflection cloth, second thermal insulation layer and second tinfoil paper reflection cloth successively by foil shielding layer and ultra-fine centrifugally glass-wool thermal insulation layer stacked the forming that alternate.
6. a kind of length according to claim 2 is defeated uses direct embedment steel pipe, it is characterized in that: the said working steel tube assembly outside is provided with three groups of rolling running rollers at least.
7. a kind of length according to claim 2 is defeated uses direct embedment steel pipe, and it is characterized in that: said multi shields insulation vacuum heat-insulating layer is the overall vacuum layer.
8. a kind of length according to claim 3 is defeated uses direct embedment steel pipe, it is characterized in that: said floating tube sheet leaves certain interval during plug-in mounting in two grooves.
9. a kind of length according to claim 4 is defeated uses direct embedment steel pipe, and it is characterized in that: said drip pan adopts multi shields insulation radiation insulating structure and three-dimensional glass steel anticorrosion structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102583250A CN102777730A (en) | 2012-07-25 | 2012-07-25 | Directly-buried steam pipeline for long-distance transportation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102583250A CN102777730A (en) | 2012-07-25 | 2012-07-25 | Directly-buried steam pipeline for long-distance transportation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102777730A true CN102777730A (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102583250A Pending CN102777730A (en) | 2012-07-25 | 2012-07-25 | Directly-buried steam pipeline for long-distance transportation |
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| Country | Link |
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| CN (1) | CN102777730A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954309A (en) * | 2012-11-22 | 2013-03-06 | 淮安四方保温管有限公司 | Steam directly buried pipe |
| CN103244758A (en) * | 2013-05-08 | 2013-08-14 | 武汉德威工程技术有限公司 | Directly-embedded energy-saving steam conveying method |
| CN105114763A (en) * | 2015-09-22 | 2015-12-02 | 江苏中圣管道工程技术有限公司 | Low-energy-consumption and long-distance steam conveying device |
| CN105823108A (en) * | 2016-06-17 | 2016-08-03 | 南京苏夏工程设计有限公司 | Ultra-distance steam conveying pipeline |
| CN110594533A (en) * | 2019-09-28 | 2019-12-20 | 上海科华热力管道有限公司 | Steam pipe network fixing joint and manufacturing process thereof |
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| CN202812659U (en) * | 2012-07-25 | 2013-03-20 | 大连科华热力管道有限公司 | Novel long-distance directly-buried steam pipeline |
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| CN102954309A (en) * | 2012-11-22 | 2013-03-06 | 淮安四方保温管有限公司 | Steam directly buried pipe |
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| CN103244758A (en) * | 2013-05-08 | 2013-08-14 | 武汉德威工程技术有限公司 | Directly-embedded energy-saving steam conveying method |
| CN105114763A (en) * | 2015-09-22 | 2015-12-02 | 江苏中圣管道工程技术有限公司 | Low-energy-consumption and long-distance steam conveying device |
| CN105114763B (en) * | 2015-09-22 | 2017-10-20 | 江苏中圣管道工程技术有限公司 | Steam low energy consumption long distance delivery device |
| CN105823108A (en) * | 2016-06-17 | 2016-08-03 | 南京苏夏工程设计有限公司 | Ultra-distance steam conveying pipeline |
| CN105823108B (en) * | 2016-06-17 | 2018-11-30 | 南京苏夏工程设计有限公司 | A kind of overlength distance conveying jet chimney |
| CN110594533A (en) * | 2019-09-28 | 2019-12-20 | 上海科华热力管道有限公司 | Steam pipe network fixing joint and manufacturing process thereof |
| CN110594533B (en) * | 2019-09-28 | 2023-12-29 | 上海科华热力管道有限公司 | Steam pipe network fixing joint and manufacturing process thereof |
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Application publication date: 20121114 |