CN103075610B - Low-energy-consumption steam delivery pipe system - Google Patents
Low-energy-consumption steam delivery pipe system Download PDFInfo
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- CN103075610B CN103075610B CN201310021044.8A CN201310021044A CN103075610B CN 103075610 B CN103075610 B CN 103075610B CN 201310021044 A CN201310021044 A CN 201310021044A CN 103075610 B CN103075610 B CN 103075610B
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Abstract
The invention relates to a low-energy-consumption steam delivery pipe system, which comprises a horizontal straight pipe section and a vertical straight pipe section. The horizontal straight pipe section is connected with the vertical straight pipe section through an elbow. Each of the horizontal straight pipe section and the vertical straight pipe section comprises at least one heat preserving layer, at least one reflecting layer and a protecting layer. The heat preserving layer covers the external part of a steam pipe. The number of the reflecting layers corresponds to the number of the heat preserving layers. The reflecting layer covers the external part of the heat preserving layer. The protecting layer covers the external part of the last reflecting layer. The horizontal straight pipe section additionally comprises one to two top-covered heat preserving layers. The top-covered heat preserving layers are circular-arc-shaped structures, are 30-40mm thick, cover one-third part of the steam pipe and are arranged between the last reflecting layer and the protecting layer. The low-energy-consumption steam delivery pipe system has the advantages that the heat loss during steam delivery is effectively reduced, the terminal pressure, the terminal temperature and the terminal flow of a steam pipe network are guaranteed, the energy consumption is reduced, the production cost is decreased, the energy benefit is improved and the use cost of heat users is reduced.
Description
Technical field
The present invention relates to a kind of steam tube system, relate to a kind of Low-energy-consumptisteam steam delivery pipe system of energy-saving and emission-reduction in particular, belong to Thermal Power Engineering technical field.
Background technique
By current steam pipe system conventional design techniques, steam pipe system pressure drop every kilometer reaches 0.06MPa ~ 0.1 Mpa, and temperature drop every kilometer reaches 15 ~ 20 DEG C, and the loss of pipe network mass-heat reaches 5 ~ 10%, and What is more up to 30 ~ 50%.Conventional design steam pipe system crushing, temperature are damaged, amount is damaged all very serious.Along with worldwide energy crisis spreads, the energy (coal, by, rock gas etc.) price climbs up and up, and each hot source point economic benefit seriously glides, and wherein the economic loss that causes of steam pipe system thermal loss is very huge.Meanwhile, heat range of heat is also extremely restricted, and cannot meet the steam parameter requirement of terminal heat supply user.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide the thermal loss in a kind of effective reduction steam Transportation, reducing the Low-energy-consumptisteam steam delivery pipe system of pressure drop, temperature drop.
For achieving the above object, the present invention is achieved by the following technical solutions: Low-energy-consumptisteam steam delivery pipe system, comprise horizontal straight tube section and straight vertical pipeline section, be connected by elbow between described horizontal straight tube section with described straight vertical pipeline section, described horizontal straight tube section and described straight vertical pipeline section include at least one deck thermal insulation layer, at least one deck reflecting layer and layer protective layer, it is outside that described thermal insulation layer is coated on described steam tube, between every layer of thermal insulating material, T-joining staggers, between each thermal insulation layer, thermal insulating material T-joining staggers, the number of plies in described reflecting layer is corresponding with described thermal insulation layer, described reflecting layer covers is outside in described thermal insulation layer, it is outside that described protective layer is coated on last one deck reflecting layer,
Described horizontal straight tube section also comprises 1 ~ 2 layer of top layer and adds a cover thermal insulation layer, and it is arc-shaped structure that described top layer adds a cover thermal insulation layer, and thickness is 30 ~ 40mm, covers 1/3 of described steam tube, is arranged between last one deck reflecting layer and protective layer.
The technological scheme that the present invention limits further is, described horizontal straight tube section comprises 3 layers of thermal insulation layer, 3 layers of reflecting layer, 1 ~ 2 layer of top layer add a cover thermal insulation layer and layer protective layer.
Further, the leading portion horizontal straight tube of described horizontal straight tube section comprises 3 layers of thermal insulation layer, 3 layers of reflecting layer, 1 layer of top layer add a cover thermal insulation layer and layer protective layer, and described 3 layers of thermal insulation layer are the thick high temperature glass wool of 50mm; The first layer reflecting layer being coated on internal layer thermal insulation layer is high temperature resistant aluminium foil glass fiber fabric, and the second layer reflecting layer being coated on middle level thermal insulation layer is normal aluminium foil glass-fiber-fabric, and the third layer reflecting layer being coated on outer thermal insulation layer is waterproof aluminium foil glass fiber fabric; It is the high temperature glass wool that 40mm is thick that described top layer adds a cover thermal insulation layer.
Further, the stage casing horizontal straight tube of described horizontal straight tube section comprises 3 layers of thermal insulation layer, 3 layers of reflecting layer, 1 layer of top layer add a cover thermal insulation layer and layer protective layer, first layer thermal insulation layer is the alumina silicate needle punched blanket that 50mm is thick, and second layer thermal insulation layer and third layer thermal insulation layer are the thick high temperature glass wool of 50mm; The first layer reflecting layer being coated on first layer thermal insulation layer is high temperature resistant aluminium foil glass fiber fabric, and the second layer reflecting layer being coated on second layer thermal insulation layer is normal aluminium foil glass-fiber-fabric, and the third layer reflecting layer being coated on third layer thermal insulation layer is waterproof aluminium foil glass fiber fabric; It is the high temperature glass wool that 40mm is thick that described top layer adds a cover thermal insulation layer.
Further, the back segment horizontal straight tube of described horizontal straight tube section comprises 3 layers of thermal insulation layer, 3 layers of reflecting layer, 1 layer of top layer add a cover thermal insulation layer and layer protective layer, first layer thermal insulation layer and second layer thermal insulation layer are the thick alumina silicate needle punched blanket of 50mm, and third layer thermal insulation layer is the high temperature glass wool that 50mm is thick; The first layer reflecting layer being coated on first layer thermal insulation layer is high temperature resistant aluminium foil glass fiber fabric, and the second layer reflecting layer being coated on second layer thermal insulation layer is high temperature resistant aluminium foil glass fiber fabric, and the third layer reflecting layer being coated on third layer thermal insulation layer is waterproof aluminium foil glass fiber fabric; It is the high temperature glass wool that 40mm is thick that described top layer adds a cover thermal insulation layer.
Further, the back segment horizontal straight tube of described horizontal straight tube section also comprises the transition layer be arranged between described first layer thermal insulation layer and described steam tube, and described transition layer is the filament ultrafine fiber felt that 10mm is thick.
Further, described straight vertical pipeline section comprises 5 layers of thermal insulation layer, 5 layers of reflecting layer and layer protective layer.
Further, described protective layer is the color steel that 50 ~ 70mm is thick, and described color steel comprises basic unit and is coated on the organic coating layer of described substrate surface, and described basic unit is hot galvanizing steel band.
Further, the front portion of described horizontal straight tube section and middle part arrange steam line and start hydrophobic, described horizontal straight tube section rear portion arranges steam line and starts hydrophobic and continuous hydrophobic, and described steam line starts hydrophobic all employing with continuous hydrophobic and is responsible for threeway addition tritonope plate structure.
Further, the elbow connecting described horizontal straight tube section and described straight vertical pipeline section is divided into horizontal elbow and vertical elbow, the thermal insulation layer of described horizontal elbow and described horizontal straight tube section, reflecting layer and protective layer arrange identical, described top layer is added a cover thermal insulation layer and is covered whole elbow; The setting of the thermal insulation layer of described vertical elbow and described horizontal straight tube section, reflecting layer and protective layer add a cover that thermal insulation layer covers elbow just as, described top layer 1/2 or 1/3.
The invention has the beneficial effects as follows: Low-energy-consumptisteam steam delivery pipe system disclosed by the invention, be effectively reduced in the thermal loss in steam Transportation process, guarantee steam pipe system terminal pressure, temperature, flow, reduce energy consumption, reduce cost of production, improve source benefit, reduce heat user cost of production; After adopting steam pipe system disclosed by the invention, at steam line conveying load more than 40% of Design cooling load time, within steam line reduces to every kilometer of temperature drop 3 ~ 5 DEG C by every kilometer of temperature drop 15 ~ 20 degree of conventional design, reduce to every kilometer of 0.02 ~ 0.03MPa by every kilometer of pressure drop 0.06 ~ 0.1MPa of conventional design, steam pipe system fed distance can reach 18 ~ 32 kilometers.
Accompanying drawing explanation
Fig. 1 is the structural representation of horizontal straight tube section of the present invention;
Fig. 2 is the structural representation of straight vertical pipeline section of the present invention;
Fig. 3 is the leading portion of horizontal straight tube section of the present invention and the sectional view in stage casing;
Fig. 4 is the sectional view of the back segment of horizontal straight tube section of the present invention;
Fig. 5 is the structural representation of horizontal elbow of the present invention;
Fig. 6 is the structural representation of vertical elbow of the present invention.
In accompanying drawing, main mark implication is as follows:
1, steel pipe; 2, level first thermal insulation layer; 3, level second thermal insulation layer; 4, level the 3rd thermal insulation layer;
5, top layer adds a cover thermal insulation layer; 6, strap; 7, horizontal protective layer;
8a, level first reflecting layer; 8b, level second reflecting layer; 8c, level the 3rd reflecting layer;
9a, vertical first reflecting layer; 9b, vertical second reflecting layer; 9c, vertical 3rd reflecting layer;
9d, vertical 4th reflecting layer; 9e, vertical 5th reflecting layer; 10, vertical first thermal insulation layer;
11, vertical second thermal insulation layer; 12, vertical 3rd thermal insulation layer; 13, vertical 4th thermal insulation layer;
14, vertical 5th thermal insulation layer; 16, vertical protective layer; 17, transition layer;
18, horizontal elbow thermal insulation layer; 19, horizontal elbow protective layer; 20, vertical elbow thermal insulation layer;
21, vertical elbow top layer adds a cover thermal insulation layer; 22, vertical elbow protective layer.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the present invention.
The invention provides a kind of Low-energy-consumptisteam steam delivery pipe system, comprise horizontal straight tube section and straight vertical pipeline section, be connected by horizontal elbow or vertical elbow between described horizontal straight tube section with described straight vertical pipeline section.
For effectively reducing steam pipe system thermal loss, reducing temperature drop, according to radiation, the conduction principle of the distribution situation of heat outside steam line and heat, adopt insulating structure.
Fig. 1 is the structural representation of horizontal straight tube section of the present invention.
As shown in Figure 1: horizontal straight tube section comprises at least one deck thermal insulation layer, at least one deck reflecting layer, 1 ~ 2 layer of top layer and adds a cover thermal insulation layer and layer protective layer; it is outside that described thermal insulation layer is coated on described steam tube; between every layer of thermal insulating material, T-joining staggers; between each thermal insulation layer, thermal insulating material T-joining staggers; the number of plies in described reflecting layer is corresponding with described thermal insulation layer; described reflecting layer covers is outside in described thermal insulation layer; it is outside that described protective layer is coated on last one deck reflecting layer, and described top layer is added a cover thermal insulation layer and is arranged between last one deck reflecting layer and protective layer.It is arc-shaped structure that described top layer adds a cover thermal insulation layer, and thickness is 30 ~ 40mm, covers 1/3 of described steam tube.
Horizontal straight tube section comprises leading portion horizontal straight tube, stage casing horizontal straight tube and back segment horizontal straight tube.
Fig. 3 is the leading portion of horizontal straight tube section of the present invention and the sectional view in stage casing.
As shown in Figure 3: the leading portion horizontal straight tube of described horizontal straight tube section comprises level first thermal insulation layer 2, level second thermal insulation layer 3, level the 3rd thermal insulation layer 4, top layer add a cover thermal insulation layer 5, level first reflecting layer 8a, level second reflecting layer 8b, level the 3rd reflecting layer 8c and horizontal protective layer 7.Level first thermal insulation layer 2, level second thermal insulation layer 3, level the 3rd thermal insulation layer 4 are the thick high temperature glass wool of 50mm.Level first reflecting layer 8a is high temperature resistant aluminium foil glass fiber fabric, and level second reflecting layer 8b is normal aluminium foil glass-fiber-fabric, and level the 3rd reflecting layer 8c is waterproof aluminium foil glass fiber fabric; It is the high temperature glass wool that 40mm is thick that top layer adds a cover thermal insulation layer 5.Horizontal protective layer 7 is the color steel that 50 ~ 70mm is thick, and described color steel comprises basic unit and is coated on the organic coating layer of described substrate surface, and described basic unit is hot galvanizing steel band.
The stage casing horizontal straight tube of described horizontal straight tube section comprises level first thermal insulation layer 2, level second thermal insulation layer 3, level the 3rd thermal insulation layer 4, top layer add a cover thermal insulation layer 5, level first reflecting layer 8a, level second reflecting layer 8b, level the 3rd reflecting layer 8c and horizontal protective layer 7.Level first thermal insulation layer 2 is the alumina silicate needle punched blanket that 50mm is thick, and level second thermal insulation layer 3 and level the 3rd thermal insulation layer 4 are the thick high temperature glass wool of 50mm; Level first reflecting layer 8a is high temperature resistant aluminium foil glass fiber fabric, and level second reflecting layer 8b is normal aluminium foil glass-fiber-fabric, and level the 3rd reflecting layer 8c is waterproof aluminium foil glass fiber fabric; It is the high temperature glass wool that 40mm is thick that top layer adds a cover thermal insulation layer 5.Horizontal protective layer 7 is the color steel that 50 ~ 70mm is thick, and described color steel comprises basic unit and is coated on the organic coating layer of described substrate surface, and described basic unit is hot galvanizing steel band.
Fig. 4 is the sectional view of the back segment of horizontal straight tube section of the present invention.
As shown in Figure 4, the back segment horizontal straight tube of described horizontal straight tube section comprises level first thermal insulation layer 2, level second thermal insulation layer 3, level the 3rd thermal insulation layer 4, top layer add a cover thermal insulation layer 5, level first reflecting layer 8a, level second reflecting layer 8b, level the 3rd reflecting layer 8c, horizontal protective layer 7 and transition layer 17.Level first thermal insulation layer 2 and level second thermal insulation layer 3 are the thick alumina silicate needle punched blanket of 50mm, and level the 3rd thermal insulation layer 4 is the high temperature glass wool that 50mm is thick; Level first reflecting layer 8a is high temperature resistant aluminium foil glass fiber fabric, and level second reflecting layer 8b is high temperature resistant aluminium foil glass fiber fabric, and level the 3rd reflecting layer 8c is waterproof aluminium foil glass fiber fabric; It is the high temperature glass wool that 40mm is thick that top layer adds a cover thermal insulation layer 5.Horizontal protective layer 7 is the color steel that 50 ~ 70mm is thick, and described color steel comprises basic unit and is coated on the organic coating layer of described substrate surface, and described basic unit is hot galvanizing steel band.Transition layer 17 is arranged between horizontal first layer thermal insulation layer 2 and steel pipe 1, is filament ultrafine fiber felt, increases heat insulation effect.
The important technological parameters of the protective layer that horizontal straight tube section and straight vertical pipeline section adopt is:
(1) base material of protective layer is 55% aluminium zinc silicon plated steel plate, and base material thickness is for being not more than 0.7mm(0.66 ~ 0.69 mm), zinc coating thickness is not less than 150g/m2, armor plate strength: more than G300 (surrender is not less than 300MPa);
(2) protective layer coating front is the high durable polyester (HDP) that thickness is not less than 20 μm, and the back side is the modified epoxy polyester that thickness is not less than 7 ~ 10 μm, and the coating quality guarantee time limit is not less than 15 years.
Horizontal straight tube section stays an expansion joint 20mm every 5 ~ 6m, and fills up with aluminosilicate refractory fiber felt rug.And use rotary compensator, the insulation heat-preservation cotton at rotary compensator place is filled, then close with color steel.Whirl compensator requires to select high-pressure resistant self-sealing rotating compensator, operation parameter scope: pressure is 1.0 ~ 4.0MPa, and temperature is-60 ~ 420 DEG C, and this product structure is double seal, and one is face seal, and sealing surface thickness is not less than 4cm; Two is end face seal, and end face seal face is not less than 2.5cm.End face seal material is wear-resisting high-strength degree stainless steel composite seal, compressive strength >=50MPa.
Fig. 2 is the structural representation of straight vertical pipeline section of the present invention.
As shown in Figure 2, straight vertical pipeline section comprises vertical first thermal insulation layer 10, vertical second thermal insulation layer 11, vertical 3rd thermal insulation layer 12, vertical 4th thermal insulation layer 13, vertical 5th thermal insulation layer 14, vertical first reflecting layer 9a, vertical second reflecting layer 9b, vertical 3rd reflecting layer 9c, vertical 4th reflecting layer 9d, vertical 5th reflecting layer 9e and vertical protective layer 16.Vertical first thermal insulation layer 10, vertical second thermal insulation layer 11, vertical 3rd thermal insulation layer 12, vertical 4th thermal insulation layer 13, vertical 5th thermal insulation layer 14 and vertical first reflecting layer 9a, vertical second reflecting layer 9b, vertical 3rd reflecting layer 9c, vertical 4th reflecting layer 9d, the spaced covering of vertical 5th reflecting layer 9e, it is outside that vertical protective layer 16 is coated on vertical 5th reflecting layer 9e.
Fig. 5 is the structural representation of horizontal elbow of the present invention.
As shown in Figure 5, the structure of horizontal elbow and the thermal insulation layer of horizontal straight tube section, reflecting layer and protective layer arrange identical, comprise horizontal elbow thermal insulation layer 18 and horizontal elbow protective layer 19, horizontal elbow thermal insulation layer 18 covers whole elbow.
Fig. 6 is the structural representation of vertical elbow of the present invention.
As shown in Figure 6; the setting of the structure of vertical elbow and the thermal insulation layer of horizontal straight tube section, reflecting layer and protective layer just as; comprise vertical elbow thermal insulation layer 20, vertical elbow top layer add a cover thermal insulation layer 21 and vertical elbow protective layer 22, vertical elbow top layer add a cover that thermal insulation layer 21 covers elbow 1/2 or 1/3.
Horizontal elbow and vertical elbow all adopt large radius seamless elbow (R=2.5 ~ 3.0DN), main technical requirements:
(1) elbow selects the seamless punched bend of R=2.5DN, elbow is chosen according to pressure rating difference, the corresponding corner dimension in " steel butt seamless pipe " (GB/T12459-2005) should be met during elbow-making, when pipeline seamless elbow is ordered goods, wall thickness must keep plus tolerance, and its wall thickness must be greater than pipeline wall thickness 1mm.
(2) pipe fitting can adopt the cold working such as bending, extruding, pushing, mold pressing, machining or hot-working method to be shaped, but mould-forming method should be accomplished to make pipe fitting not produce injurous defect.
(3) manufacturing process should ensure that pipe fitting is when being shaped, and its arc transition portion profile is round and smooth.
(4) adopt the pipe fitting of cold machine-shaping, the heat treatment eliminated stress after shaping, should be carried out.
(5) adopt the pipe fitting of heat processing and forming, to carbon steel material, when its final forming temperature is lower than 750 DEG C, should heat-treat.
(6) surface of pipe fitting should smooth non-scale, pipe fitting must not have the degree of depth be greater than nominal wall thickness 5% and maximum depth must not be greater than the scabbing of 0.5mm, folding, roll the defects such as folding, absciss layer; The degree of depth exceedes nominal wall thickness 10% or is greater than the mechanical mark of 1.0mm and pit should be removed.
(7) antirust treatment should be carried out in all Seamless Steel pipe fitting surfaces, and process grade should reach China's " before application steel surface rusting grade and derusting grade table " Sa2.5 level, and the common anti-corrosive primer of brush one deck, priming paint height should be not less than 40 microns.
During construction, the technique of tying up in each thermal insulation layer and reflecting layer is: add strap 6 at interval of 200mm with planted agent and tie up, per pass strap 6 need be tied up separately, forbids to adopt spirality to tie up.Two road straps 6 are at least tied up in every section, reflecting layer, and spacing is no more than 300mm.Strap internal layer 10mm wide strip, skin steel wire.The fixing package steel strip of sheet material, every block sheet material colligation 3 road, spacing is evenly (150 ~ 200mm), firmly appropriate during binding, sheet material and steel pipe 1 forming degree good, be close to steel pipe 1 and be as the criterion.Steel band is installed elasticity and should be suitable for, can not be too tight, in order to avoid affect insulation thickness.
Reflecting layer adopts spiral wrap construction, lap length >=50mm.General first layer reflecting layer is wound around clockwise, and second layer reflecting layer is wound around counterclockwise, and by that analogy, two kinds, other reflecting layer mode is alternately wound around successively.
In addition, for effectively reducing thermal loss, the reduction temperature drop of steam tube system, be decreased through conduit saddle dispersed heat, adopt the energy-saving sliding supporter of effectively insulating, described special efficacy Thermal insulative pipe carrier technical requirements is as follows:
(1) conduit saddle model representation is LRHA-DN-height/length-I, as: LRHA-800-320/500-I; LR-represents the special Thermal insulative pipe carrier of long defeated steam line; H-represents slip; A-represents Applicable scope 320 DEG C of < t≤450 DEG C, and B-represents Applicable scope 250 DEG C≤t < 320 DEG C; DN-represents steam line diameter; Conduit saddle height/conduit saddle length; I-represents Thermal insulative pipe carrier and pipe support (pier) top contact mode (teflon contacts with corrosion resistant plate).
(2) heat insulation tile fragment compressive strength >=8.0MPa, bending strength >=1.5MPa;
(3) during temperature t=250 DEG C, thermal conductivity≤0.2W/mK;
(4) friction factor≤0.1;
(5) when ambient temperature≤20 DEG C, slide, lead conduit saddle lower shoe temperature < 30 DEG C, fixed pipe bracket lower shoe temperature < 40 DEG C;
(6) soft interlayer nature thickness 30 ~ 40mm, is 20 ~ 30mm after compacting;
(7) height of conduit saddle and length can make according to design document demand.
(8) different according to serviceability temperature, caliber is different, and be divided into " A type " conduit saddle and " Type B conduit saddle ", two kinds of conduit saddle heat insulation tile fragment thickness are different.
(9) this product is patented product, must professional manufactory produce.
(10) should ensure that soft thermal-protective coating is intact when conduit saddle is installed, soft thermal-protective coating should keep away from moisture in conduit saddle transportation process, otherwise can affect effect of heat insulation.
(11) different according to caliber, conduit saddle clip thickness, clip width, the base plate thick end, are all not identical.
(12), when conduit saddle is installed, lower catch hoop stuck (bolt is tight) must be gone up, guarantee conduit saddle and pipeline global displacement, avoid sliding in conduit saddle and pipeline enclosure.
For effectively reducing steam pipe system thermal loss, reducing temperature drop, guarantee the safe and reliable operation of Low-energy-consumptisteam steam delivery pipe system, arranging steam line in steam tube system front portion and middle part starts hydrophobic, steam line is set at steam pipe system rear portion and starts hydrophobic and continuous hydrophobic, described steam line starts hydrophobic, continuous hydrophobic employing supervisor threeway addition tritonope plate structure, is convenient to hydrophobic and desilting.
In the process of deployment of reality, pipeline single line (origin-to-destination) total length about 31 kilometers, thermoelectricity plant outlet pressure 1.8Mpa, temperature 385 DEG C, flow 10t/h(is 15% of Design cooling load amount), adopt low energy consumption delivering vapor system of the present invention, through calculating, can reach 1.4MPa to 19 kilometers of outer terminal temperature difference pressure, temperature reaches 320 DEG C, and every kilometer of temperature drop is about 3.5 DEG C; As long as because terminal temperature difference requires that pressure is greater than 0.6MPa, temperature is greater than 165 DEG C and just can meets the demands, for saving energy consumption, can set: thermoelectricity plant's outlet pressure is adjusted to 1.0Mpa, temperature is adjusted to 240 DEG C, and flow is 10 ~ 20t/h about, reaches 0.6MPa to 19 kilometers of outer terminal temperature difference pressure, temperature reaches 175 DEG C, and every kilometer of temperature drop is about 3.5 DEG C.
Pipeline single line (origin-to-destination) total length about 1.8 kilometers, adopt low energy consumption delivering vapor system of the present invention, if thermoelectricity plant outlet pressure 0.90Mpa, temperature 280 DEG C, flow 15t/h(is 30% of Design cooling load amount), calculate: can reach 0.87MPa to 1.8 kilometers of outer terminal temperature difference pressure, temperature reaches 275 DEG C, and every kilometer of temperature drop is about 2.8 DEG C.
The present invention can expand the heating range of Thermal Power Enterprises greatly, makes enterprise far away of original distance thermoelectricity plant also can be suitable for central heat supply, removes arcola, effectively reduce coal consumption, improve hotspot stress, and reduce the discharge of sulfur dioxide, protection of the environment.
Above-described embodiment does not limit the present invention in any form, the technological scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.
Claims (6)
1. a Low-energy-consumptisteam steam delivery pipe system, comprise horizontal straight tube section and straight vertical pipeline section, be connected by elbow between described horizontal straight tube section with described straight vertical pipeline section, it is characterized in that, described horizontal straight tube section and described straight vertical pipeline section include multi-layer heat preserving layer, at least one deck reflecting layer and layer protective layer, it is outside that described thermal insulation layer is coated on described steam tube, between every layer of thermal insulating material, T-joining staggers, between each thermal insulation layer, thermal insulating material T-joining staggers, the number of plies in described reflecting layer is corresponding with described thermal insulation layer, described reflecting layer covers is outside in described thermal insulation layer, it is outside that described protective layer is coated on last one deck reflecting layer,
Described horizontal straight tube section comprises 3 layers of thermal insulation layer, 3 layers of reflecting layer, 1 ~ 2 layer of top layer add a cover thermal insulation layer and layer protective layer; It is arc-shaped structure that described top layer adds a cover thermal insulation layer, and thickness is 30 ~ 40mm, covers 1/3 of described steam tube, is arranged between last one deck reflecting layer and protective layer; The stage casing horizontal straight tube of described horizontal straight tube section comprises 3 layers of thermal insulation layer, 3 layers of reflecting layer, 1 layer of top layer add a cover thermal insulation layer and layer protective layer, first layer thermal insulation layer is the alumina silicate needle punched blanket that 50mm is thick, and second layer thermal insulation layer and third layer thermal insulation layer are the thick high temperature glass wool of 50mm; The first layer reflecting layer being coated on first layer thermal insulation layer is high temperature resistant aluminium foil glass fiber fabric, and the second layer reflecting layer being coated on second layer thermal insulation layer is normal aluminium foil glass-fiber-fabric, and the third layer reflecting layer being coated on third layer thermal insulation layer is waterproof aluminium foil glass fiber fabric; It is the high temperature glass wool that 40mm is thick that described top layer adds a cover thermal insulation layer;
The protective layer that horizontal straight tube section and straight vertical pipeline section adopt is the color steel that 50 ~ 70mm is thick; described color steel comprises basic unit and is coated on the organic coating layer of described substrate surface; and described basic unit is 55% aluminium zinc silicon plated steel plate, groundwork thickness is for being not more than 0.7mm, and zinc coating thickness is not less than 150g/m
2; Organic coating layer front is the high durable polyester that thickness is not less than 20 μm, and the back side is the modified epoxy polyester that thickness is not less than 7 μm;
The elbow connecting described horizontal straight tube section and described straight vertical pipeline section is divided into horizontal elbow and vertical elbow, the thermal insulation layer of described horizontal elbow and described horizontal straight tube section, reflecting layer and protective layer arrange identical, described top layer is added a cover thermal insulation layer and is covered whole elbow; The setting of the thermal insulation layer of described vertical elbow and described horizontal straight tube section, reflecting layer and protective layer add a cover that thermal insulation layer covers elbow just as, described top layer 1/2 or 1/3.
2. Low-energy-consumptisteam steam delivery pipe system according to claim 1, it is characterized in that, the leading portion horizontal straight tube of described horizontal straight tube section comprises 3 layers of thermal insulation layer, 3 layers of reflecting layer, 1 layer of top layer add a cover thermal insulation layer and layer protective layer, and described 3 layers of thermal insulation layer are the thick high temperature glass wool of 50mm; The first layer reflecting layer being coated on internal layer thermal insulation layer is high temperature resistant aluminium foil glass fiber fabric, and the second layer reflecting layer being coated on middle level thermal insulation layer is normal aluminium foil glass-fiber-fabric, and the third layer reflecting layer being coated on outer thermal insulation layer is waterproof aluminium foil glass fiber fabric; It is the high temperature glass wool that 40mm is thick that described top layer adds a cover thermal insulation layer.
3. Low-energy-consumptisteam steam delivery pipe system according to claim 1, it is characterized in that, the back segment horizontal straight tube of described horizontal straight tube section comprises 3 layers of thermal insulation layer, 3 layers of reflecting layer, 1 layer of top layer add a cover thermal insulation layer and layer protective layer, first layer thermal insulation layer and second layer thermal insulation layer are the thick alumina silicate needle punched blanket of 50mm, and third layer thermal insulation layer is the high temperature glass wool that 50mm is thick; The first layer reflecting layer being coated on first layer thermal insulation layer is high temperature resistant aluminium foil glass fiber fabric, and the second layer reflecting layer being coated on second layer thermal insulation layer is high temperature resistant aluminium foil glass fiber fabric, and the third layer reflecting layer being coated on third layer thermal insulation layer is waterproof aluminium foil glass fiber fabric; It is the high temperature glass wool that 40mm is thick that described top layer adds a cover thermal insulation layer.
4. Low-energy-consumptisteam steam delivery pipe system according to claim 3, it is characterized in that, the back segment horizontal straight tube of described horizontal straight tube section also comprises the transition layer be arranged between described first layer thermal insulation layer and described steam tube, and described transition layer is the filament ultrafine fiber felt that 10mm is thick.
5. Low-energy-consumptisteam steam delivery pipe system according to claim 1, is characterized in that, described straight vertical pipeline section comprises 5 layers of thermal insulation layer, 5 layers of reflecting layer and layer protective layer.
6. Low-energy-consumptisteam steam delivery pipe system according to claim 1, it is characterized in that, the front portion of described horizontal straight tube section and middle part arrange steam line and start hydrophobic, described horizontal straight tube section rear portion arranges steam line and starts hydrophobic and continuous hydrophobic, and described steam line starts hydrophobic all employing with continuous hydrophobic and is responsible for threeway addition tritonope plate structure.
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