CN101666417A - Steel-sleeve steel steam insulation pipe and rolling supporting mechanism thereof - Google Patents
Steel-sleeve steel steam insulation pipe and rolling supporting mechanism thereof Download PDFInfo
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- CN101666417A CN101666417A CN200910070271A CN200910070271A CN101666417A CN 101666417 A CN101666417 A CN 101666417A CN 200910070271 A CN200910070271 A CN 200910070271A CN 200910070271 A CN200910070271 A CN 200910070271A CN 101666417 A CN101666417 A CN 101666417A
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Abstract
The invention relates to a steel-sleeve steel steam insulation pipe and a rolling supporting mechanism thereof, wherein the nominal diameter of an inner sleeve steel pipe of the steel-sleeve steam insulation pipe is DN 600-DN 700. The rolling supporting mechanism comprises an upper steel hoop, a lower steel hoop, two upper idler wheels arranged on the upper steel hoop and distributed symmetrically, and four lower idler wheels arranged on the lower steel hoop and distributed symmetrically, wherein the four lower idler wheels are evenly divided into two groups; the end parts of the upper steel hoop and the lower steel hoop are connected by bolts; and when the axes of the inner sleeve steel pipe and an outer sleeve steel pipe are overlapped, the four lower idler wheels and the inner wall of the outer sleeve steel pipe are contacted in a rolling friction way, and gaps are left between the two upper idler wheels and the inner wall of the outer sleeve steel pipe. The steel-sleeve steel steaminsulation pipe comprises the rolling supporting mechanism and also comprises insulation material positioned between the rolling supporting mechanism and the inner sleeve steel pipe, heat-preservation material with the external diameter smaller than the internal diameter of the outer sleeve steel pipe, an air evaporation valve arranged on the outer sleeve steel pipe, and erosion resistant coatingsleeved outside the outer sleeve steel pipe. The rolling supporting mechanism has small friction force, therefore, the stress of the rolling supporting mechanism and the inner sleeve steel pipe is reduced.
Description
Technical field
The present invention relates to a kind of heat insulation-type steam conveying pipe, further relating to a kind of interior cover steel pipe nominal diameter is steel-sleeve steel steam insulation pipe and the rolling supporting mechanism thereof of DN600-DN700.
Background technique
The steel-sleeve steel steam insulation pipe road is a kind of new technology that developed recently gets up, and is used for carrying high-temperature steam (250-350 ℃).Cover steel pipe and outer steel pipe in its structure all comprises basically, middle some thermal insulating materials of filling.Because vapor (steam) temperature is higher, interior cover pipe deformation amount is bigger, therefore caused interior cover steel pipe in outer steel pipe upper and lower float or about drift, general thermal insulating material is difficult to bear the amount of deformation that high temperature like this brings, and causes the destruction of thermal insulation layer and the hot-fluid reluctant difficult problem that leaks.Therefore be badly in need of a kind of new steel bushing steel insulation pipe structure of design, to address the above problem.
Summary of the invention
The objective of the invention is to design row a kind of big caliber (interior cover steel pipe nominal diameter is DN600-DN700) steel-sleeve steel steam insulation pipe and rolling supporting mechanism thereof.The present invention realizes in the following way:
Interior cover steel pipe nominal diameter is the steel-sleeve steel steam insulation pipe rolling supporting mechanism of DN600-DN700, comprising: the last stirrup and the following stirrup of cover steel pipe cylindrical shape in bending to; Be positioned on the stirrup and 2 upper rollers that are symmetrically distributed, the line at 2 upper rollers and interior cover steel pipe center is 90 degree angles; Be positioned on the following stirrup and 4 bottom rollers that are symmetrically distributed, 42 of bottom rollers are one group, and 2 bottom rollers of every group distribute side by side along the inner cylinder liner axial direction, and the line at 2 groups of bottom rollers and interior cover steel pipe center is 90 degree angles; Last stirrup is connected by bolt with the end of following stirrup; When interior cover steel pipe and outer steel pipe axis were overlapping, 4 bottom rollers contacted for the rolling friction mode with the inwall of outer steel sleeve, had the gap between the inwall of 2 upper rollers and outer steel sleeve.
As optimized project, the outer circumferential face of above-mentioned upper roller and bottom roller is an arc, and radian is identical with the radian of outer steel sleeve inwall.
Adopt the steel-sleeve steel steam insulation pipe road of above-mentioned rolling supporting mechanism, comprise: nominal diameter is the interior cover steel pipe of DN600-DN700, outer steel pipe with interior cover steel pipe coaxial line also comprises: the outer steel-sleeve steel steam insulation pipe rolling supporting mechanism of cover steel pipe in above-mentioned being enclosed within; The thermal-protective material of pad between rolling supporting mechanism and interior cover steel pipe; Overlap outside the steel pipe in being enclosed within, and the thermal insulating material between the steel-sleeve steel steam insulation pipe rolling supporting mechanism, thermal insulating material is the super glass wool shell, takes double-deck fissure of displacement wrapping, the external diameter of thermal insulation layer forms air layer less than the internal diameter of outer steel pipe between the two; Be enclosed within the outer anticorrosive coat of outer steel pipe.
In implementation process of the present invention, can link to each other with vacuum pump at certain position opening of outer steel pipe, the air between the interior outer steel pipe is extracted out, form vacuum heat-insulating layer.
The present invention with respect to the advantage of prior art is:
(1) coefficient of sliding friction between general steel and the steel is 0.3, coefficient of rolling friction≤0.1, the contrast by above-mentioned friction factor as can be seen rolling support in the huge advantage of pipeline aspect stressed.It makes, and the fixed support of pipeline is stressed to be reduced greatly, and the whole mechanical analysis of pipeline is simple and clear, and Security significantly improves.
(2) bottom roller has been taked 2 one group the double project organization of taking turns, and has improved its bearing power; Simultaneously, the fusion length under the T-Type structure of rolling wheel support and roller riser does not increase on the stirrup need not to widen stirrup down, has reduced heat loss.
(3) when inside and outside cover steel shaft line overlap, there are the gap in upper roller and outer steel pipe, this technical characteristics makes and to slide when running into weld seam or other thrust when bottom roller overlaps steel duct outside, can make progress voluntarily and float, and does not influence interior axial motion of overlapping steel pipe.
(4) by vaccum-pumping equipment extracting air layer of air, can between outer steel pipe and thermal insulating material, form vacuum layer, can reduce heat loss about 40%, improve the heat insulation effect of pipeline; Simultaneously, can also solve outer sleeve inner wall might be by the difficult problem of hot wet atmospheric corrosion; Saved outer steel pipe and every 50-60 rice the technology of humidity discharging pipe has been set, average every mitron line can reduce the cost about 50 yuan.
(5) because rolling supporting mechanism sliding effect easily, when constructing at the scene, outer steel pipe can not adopt the mode of two half-watt overlap joints welding, but by mobile outer steel pipe, carry out the repaired mouth operation by the root connecting method, can reduce the outer steel pipe weldering peak number amount of 40%-50%; The minimizing of weld seam quantity has not only been shortened installation period, has been reduced the possibility of revealing, and saved a large amount of welding, ultrasound, X ray testing cost; With 1000 mitron road length computation, be 12 meters by every pipe measured length, adopt product of the present invention can save 80 road circumferential welded seams and 160 road longitudinal welds, always save about 150,000 yuan of mounting cost, average every mitron road is saved 150 yuan.
(6) thermal insulating material is the super glass wool shell, takes fissure of displacement wrapping, and it is few to have seam, the characteristics of good permeability; In case and thermal insulation layer intakes in work progress, can be by progressively improving vapor (steam) temperature and the humidity discharging of bleeding, progressively oven dry; Oven dry back shape and the good advantage of thermal insulation property.
Description of drawings
Fig. 1 is the rolling supporting mechanism sectional view; Among the figure, 2 represent high temperature insulating material, and 3a, 3b represent upper and lower inner rib plate respectively, and 4 represent bolt hole, and 5 represent bottom roller, 6 representatives, and 7 represent the stirrup folding surface, and 8 represent floor, the upper and lower stirrup of 9 representatives, the upper and lower roller shaft of 10 representatives, 11 represent packing ring.
Fig. 2 is the bottom roller partial enlarged drawing.
Fig. 3 is along the 1-1 sectional view among Fig. 1.
Fig. 4 is the upper roller sectional view.
Fig. 5 is the roller schematic representation.
Fig. 6 is that the pipeline heat loss is with the vacuum pressure change curve.
Embodiment
Contrast Fig. 1-5 illustrates concrete technological scheme of the present invention.In the present embodiment, steel-sleeve steel steam insulation pipe comprises: interior cover steel pipe, diameter are 630 millimeters; Outer steel pipe, diameter are 920 millimeters; The thermal-protective material of pad between rolling supporting mechanism and interior cover steel pipe, thermal-protective material thickness is selected 9 millimeters; Rolling supporting mechanism outside thermal-protective material and between the outer steel pipe; Overlap outside the steel pipe in being enclosed within, and the thermal insulating material between the steel-sleeve steel steam insulation pipe rolling supporting mechanism, thermal insulating material is the super glass wool shell, takes double-deck fissure of displacement wrapping, the external diameter of thermal insulation layer forms air layer less than the internal diameter of outer steel pipe between the two; Be positioned on the outer steel pipe, and the extraction valve that communicates with air layer, by the extraction valve exhaust, can make air layer be converted into vacuum layer; Be enclosed within the outer anticorrosive coat of outer steel pipe.Described rolling supporting mechanism comprises:
The last stirrup and the following stirrup of cover steel pipe cylindrical shape in bending to; Be positioned on the stirrup and 2 upper rollers that are symmetrically distributed, the line at 2 upper rollers and interior cover steel pipe center is 90 degree angles; Be positioned on the following stirrup and 4 bottom rollers that are symmetrically distributed, 42 of bottom rollers are one group, and 2 bottom rollers of every group distribute side by side along the inner cylinder liner axial direction, and the line at 2 groups of bottom rollers and interior cover steel pipe center is 90 degree angles; Last stirrup is connected by bolt with the end of following stirrup; When interior cover steel pipe and outer steel pipe axis were overlapping, 4 bottom rollers contacted for the rolling friction mode with the inwall of outer steel sleeve, had the gap between the inwall of 2 upper rollers and outer steel sleeve, and gap value is 15 millimeters.
The outer circumferential face of above-mentioned upper roller and bottom roller is an arc, and radian is identical with the radian of outer steel sleeve inwall.
Above-mentioned upper roller and bottom roller are positioned on upper roller shaft and the bottom roller axle, and the upper roller pedestal cooperates for no gap between described 2 parallel upper roller risers and the upper roller on 2 parallel upper roller risers; 2 described every group bottom roller pedestals are on 2 parallel bottom roller bracing struts, the middle part of 2 parallel bottom roller bracing struts is connected by welding manner with the bottom roller riser respectively, described bottom roller bracing strut telescopic shaft to width greater than the bottom roller riser telescopic shaft to width.
Between above-mentioned 2 parallel upper roller risers and between 2 parallel bottom roller risers an inner rib plate 3 is arranged respectively, cover steel pipe and roller shaft in inner rib plate is parallel to; Respectively there is an outer floor in described 2 parallel upper roller risers bottom roller riser outside parallel with 2, outer floor is perpendicular to interior cover steel pipe and upper and lower roller riser, upper and lower roller riser, inner rib plate and outer inner panel and connect by welding manner between the stirrup up and down.
Above-mentioned upper and lower stirrup forms 2 parallel surface of contact at connection part by bending, connects by bolt between 2 surface of contact, also comprises a stirrup floor that connects stirrup circumferential surface and folding surface, and the stirrup floor is perpendicular to the axis of interior outer cylinder sheath; The stirrup floor be connected by welding manner between the stirrup up and down.
Claims (10)
1, the interior cover steel pipe nominal diameter steel-sleeve steel steam insulation pipe rolling supporting mechanism that is DN600-DN700 is characterized in that, comprising: the last stirrup and the following stirrup of cover steel pipe cylindrical shape in bending to; Be positioned on the stirrup and 2 upper rollers that are symmetrically distributed, the line at 2 upper rollers and interior cover steel pipe center is 90 degree angles; Be positioned on the following stirrup and 4 bottom rollers that are symmetrically distributed, 42 of bottom rollers are one group, and 2 bottom rollers of every group distribute side by side along the inner cylinder liner axial direction, and the line at 2 groups of bottom rollers and interior cover steel pipe center is 90 degree angles; Last stirrup is connected by bolt with the end of following stirrup; When interior cover steel pipe and outer steel pipe axis were overlapping, 4 bottom rollers contacted for the rolling friction mode with the inwall of outer steel sleeve, had the gap between the inwall of 2 upper rollers and outer steel sleeve.
2, be the steel-sleeve steel steam insulation pipe rolling supporting mechanism of DN600-DN700 according to the described interior cover steel pipe nominal diameter of claim 1, it is characterized in that the outer circumferential face of described upper roller and bottom roller is an arc, radian is identical with the radian of outer steel sleeve inwall.
3, be the steel-sleeve steel steam insulation pipe rolling supporting mechanism of DN600-DN700 according to the described interior cover steel pipe nominal diameter of claim 2, it is characterized in that, described upper roller and bottom roller are positioned on upper roller shaft and the bottom roller axle, the upper roller pedestal cooperates for no gap between described 2 parallel upper roller risers and the upper roller on 2 parallel upper roller risers; 2 described every group bottom roller pedestals are on 2 parallel bottom roller bracing struts, the middle part of 2 parallel bottom roller bracing struts is connected by welding manner with the bottom roller riser respectively, described bottom roller bracing strut telescopic shaft to width greater than the bottom roller riser telescopic shaft to width.
4, be the steel-sleeve steel steam insulation pipe rolling supporting mechanism of DN600-DN700 according to the described interior cover steel pipe nominal diameter of claim 3, it is characterized in that, between described 2 parallel upper roller risers and between 2 parallel bottom roller risers an inner rib plate is arranged respectively, cover steel pipe and roller shaft in inner rib plate is parallel to; Respectively there is an outer floor in described 2 parallel upper roller risers bottom roller riser parallel with 2 outside, and outer floor is perpendicular to interior cover steel pipe and last bottom roller riser, last bottom roller riser, inner rib plate and outer floor and connect by welding manner between the stirrup up and down.
5, be the steel-sleeve steel steam insulation pipe rolling supporting mechanism of DN600-DN700 according to the described interior cover steel pipe nominal diameter of claim 1, it is characterized in that, described stirrup up and down forms 2 parallel surface of contact at connection part by bending, connect by bolt between 2 surface of contact, also comprise a stirrup floor that connects stirrup circumferential surface and folding surface, the stirrup floor is perpendicular to the axis of interior outer cylinder sheath; Be connected by welding manner between stirrup floor and the stirrup.
6, steel-sleeve steel steam insulation pipe road, comprise: nominal diameter is the interior cover steel pipe of DN600-DN700, outer steel pipe with interior cover steel pipe coaxial line is characterized in that, also comprises: the outer steel-sleeve steel steam insulation pipe rolling supporting mechanism as claimed in claim 1 of cover steel pipe in being enclosed within; The thermal-protective material of pad between rolling supporting mechanism and interior cover steel pipe; Overlap outside the steel pipe in being enclosed within, and the thermal insulating material between the steel-sleeve steel steam insulation pipe rolling supporting mechanism, thermal insulating material is the super glass wool shell, takes double-deck fissure of displacement wrapping, the external diameter of thermal insulation layer forms air layer less than the internal diameter of outer steel pipe between the two; Be enclosed within the outer anticorrosive coat of outer steel pipe.
According to the described steel-sleeve steel steam insulation pipe of claim 6 road, it is characterized in that 7, the outer circumferential face of described upper roller and bottom roller is an arc, radian is identical with the radian of outer steel sleeve inwall.
8, according to the described steel-sleeve steel steam insulation pipe of claim 7 road, it is characterized in that, described upper roller and bottom roller are positioned on upper roller shaft and the bottom roller axle, and the upper roller pedestal cooperates for no gap between described 2 parallel upper roller risers and the upper roller on 2 parallel upper roller risers; 2 described every group bottom roller pedestals are on 2 parallel bottom roller bracing struts, the middle part of 2 parallel bottom roller bracing struts is connected by welding manner with the bottom roller riser respectively, described bottom roller bracing strut telescopic shaft to width greater than the bottom roller riser telescopic shaft to width.
9, described according to Claim 8 steel-sleeve steel steam insulation pipe road is characterized in that between described 2 parallel upper roller risers and between 2 parallel bottom roller risers an inner rib plate being arranged respectively, cover steel pipe and roller shaft in inner rib plate is parallel to; Respectively there is an outer floor in described 2 parallel upper roller risers bottom roller riser parallel with 2 outside, and outer floor is perpendicular to interior cover steel pipe and last bottom roller riser, last bottom roller riser, inner rib plate and outer inner panel and connect by welding manner between the stirrup up and down.
10, according to the described steel-sleeve steel steam insulation pipe of claim 6 road, it is characterized in that, described stirrup up and down forms 2 parallel surface of contact at connection part by bending, connect by bolt between 2 surface of contact, also comprise a stirrup floor that connects stirrup circumferential surface and folding surface, the stirrup floor is perpendicular to the axis of interior outer steel sleeve; Be connected by welding manner between stirrup floor and the stirrup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910070271A CN101666417A (en) | 2009-08-28 | 2009-08-28 | Steel-sleeve steel steam insulation pipe and rolling supporting mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910070271A CN101666417A (en) | 2009-08-28 | 2009-08-28 | Steel-sleeve steel steam insulation pipe and rolling supporting mechanism thereof |
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| CN101666417A true CN101666417A (en) | 2010-03-10 |
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| CN200910070271A Pending CN101666417A (en) | 2009-08-28 | 2009-08-28 | Steel-sleeve steel steam insulation pipe and rolling supporting mechanism thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929584A (en) * | 2010-09-17 | 2010-12-29 | 江苏锡丰能源设备工程有限公司 | No-limit planar slide pipe carrier |
| CN102261645A (en) * | 2011-05-12 | 2011-11-30 | 四川省达州钢铁集团有限责任公司 | Steam heat accumulator and method for fixing thermal insulating layer thereof |
| CN102555198A (en) * | 2012-01-31 | 2012-07-11 | 何军 | Wall tube composite molding supporting device of polyethylene entwining structure |
| CN103256455A (en) * | 2013-06-04 | 2013-08-21 | 江苏明江机械制造有限公司 | Heat-insulation sliding support for large-diameter directly-buried pipe |
| CN104167695A (en) * | 2014-09-05 | 2014-11-26 | 舟山市定海区龙强机械设备厂 | Drag reduction device for submarine cable laying |
| CN104406007A (en) * | 2014-11-21 | 2015-03-11 | 广西智通节能环保科技有限公司 | Vacuum heat-insulating steam-conveying pipeline |
| CN109373107A (en) * | 2018-12-14 | 2019-02-22 | 浙江省特种设备检验研究院 | A kind of band garter spring roller devices excessively curved convenient for underwater sealing box |
| CN110296274A (en) * | 2019-08-07 | 2019-10-01 | 中国船舶重工集团公司第七0三研究所 | Rolling bearing thermal pipe bracket assembly |
| CN111092393A (en) * | 2019-12-16 | 2020-05-01 | 上海市基础工程集团有限公司 | Special pipe penetrating and resistance reducing tool for submarine cable |
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2009
- 2009-08-28 CN CN200910070271A patent/CN101666417A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929584A (en) * | 2010-09-17 | 2010-12-29 | 江苏锡丰能源设备工程有限公司 | No-limit planar slide pipe carrier |
| CN102261645A (en) * | 2011-05-12 | 2011-11-30 | 四川省达州钢铁集团有限责任公司 | Steam heat accumulator and method for fixing thermal insulating layer thereof |
| CN102261645B (en) * | 2011-05-12 | 2013-05-29 | 四川省达州钢铁集团有限责任公司 | Steam heat accumulator and method for fixing thermal insulating layer thereof |
| CN102555198A (en) * | 2012-01-31 | 2012-07-11 | 何军 | Wall tube composite molding supporting device of polyethylene entwining structure |
| CN103256455A (en) * | 2013-06-04 | 2013-08-21 | 江苏明江机械制造有限公司 | Heat-insulation sliding support for large-diameter directly-buried pipe |
| CN103256455B (en) * | 2013-06-04 | 2016-01-27 | 江苏明江机械制造有限公司 | The heat insulation sliding support of heavy caliber direct buried pipe |
| CN104167695A (en) * | 2014-09-05 | 2014-11-26 | 舟山市定海区龙强机械设备厂 | Drag reduction device for submarine cable laying |
| CN104406007A (en) * | 2014-11-21 | 2015-03-11 | 广西智通节能环保科技有限公司 | Vacuum heat-insulating steam-conveying pipeline |
| CN109373107A (en) * | 2018-12-14 | 2019-02-22 | 浙江省特种设备检验研究院 | A kind of band garter spring roller devices excessively curved convenient for underwater sealing box |
| CN110296274A (en) * | 2019-08-07 | 2019-10-01 | 中国船舶重工集团公司第七0三研究所 | Rolling bearing thermal pipe bracket assembly |
| CN111092393A (en) * | 2019-12-16 | 2020-05-01 | 上海市基础工程集团有限公司 | Special pipe penetrating and resistance reducing tool for submarine cable |
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Open date: 20100310 |