CN105114763A - Low-energy-consumption and long-distance steam conveying device - Google Patents
Low-energy-consumption and long-distance steam conveying device Download PDFInfo
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- CN105114763A CN105114763A CN201510609615.9A CN201510609615A CN105114763A CN 105114763 A CN105114763 A CN 105114763A CN 201510609615 A CN201510609615 A CN 201510609615A CN 105114763 A CN105114763 A CN 105114763A
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- thermal insulation
- insulation layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
- F16L58/1072—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sprayed layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/08—Means for preventing radiation, e.g. with metal foil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/15—Arrangements for the insulation of pipes or pipe systems for underground pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a low-energy-consumption and long-distance steam conveying device. The device comprises an overhead steam pipeline and/or a buried steam pipeline, a dewatering device and a matched anti-seismic insulated pipe support. The overhead steam pipeline comprises at least two insulating layers, at least one reflecting layer, a waterproof insulating layer and a protecting layer. The buried steam pipeline comprises a hot-melting frictional layer, at least one insulating layer, at least one reflecting layer, a supporting layer, a jacket steel pipe and a polyurea anticorrosive coating. By means of the low-energy-consumption and long-distance steam conveying device, heat loss in the high-temperature steam conveying process can be effectively lowered, and the safety of the pipeline system is guaranteed; meanwhile, energy benefits are increased, and the production cost of heat consumers is lowered. When loads conveyed by the steam pipeline reach 30% of design loads, the temperature of steam is lowered by 3-5 DEG C per kilometer from the conventional design that the temperature is lowered by 15-20 DEG C per kilometer, and the conveying distance of the steam can reach 30-40 kilometers. Besides, drainage of the steam pipeline is safer and more efficient. The steam pipeline can be supported in a more energy-saving mode, and meanwhile the multiple functions of shock resistance and sound absorption are achieved.
Description
Technical field
The invention belongs to Thermal Power Engineering technical field, relate to a kind of steam low energy consumption long distance delivery device, be specifically related to built on stilts steam pipeline heat-insulation technology and buried steam pipeline heat-insulation technology.
Background technique
Along with the expansion of central heat supply scope, especially in steam heating system, heat range of heat is more and more longer, also more and more higher to the requirement of temperature drop.According to current conventional design, steam line every kilometer temperature drop is up to 15 ~ 20 DEG C, and pipeline thermal loss reaches 10--20%, even more.Cause the huge waste of the energy on the one hand; Can not meet user's requirement because steam temperature drop is excessive on the other hand, parameter need be fallen by steam turbine and run to meet steam quality requirement, produce to equipment safety and bring hidden danger.
Steam line adopts cellular insulant usually, and as ceramic fiber, rock wool, glass wool etc. are incubated, but such insulation thickness is comparatively large, invests higher.Consider that the transmission of pipeline heat mainly contains two kinds of modes: one is heat transfer; Two is thermal radiation; Heat transfer by convection can be ignored.At present, existing by arranging reflecting material in thermal insulation layer effectively to reduce the technology of pipeline radiative heat transfer amount, thus reduce insulation thickness, but construction cost is higher, and effect has much room for improvement.
In steam line running, a certain amount of condensed water can be produced, need be discharged by steam trap connection.But the impurity in medium, as welding slag etc. is easily brought in steam trap connection the blocking causing drain pipe.At present, steam trap connections most on market, the impurity of failing in effective filter medium, affects hydrophobic effect, carrys out risk to the operating band of steam line.
Meanwhile, in steam line running, due to existence or the steam load adjustment of condensed water, pipe vibration is difficult to avoid.Tradition heat-insulating bracket often ignores vibration resistance, and its heat-insulating block is under the effect of oscillating load, and easy cracking failure, also brings potential safety hazard while leakage heat.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide the heat loss in a kind of effective reduction steam Transportation process, reducing the steam low energy consumption long distance delivery device of temperature drop.
Object of the present invention is achieved through the following technical solutions:
A kind of steam low energy consumption long distance delivery device, comprises built on stilts steam line and/or buried steam line; Described built on stilts steam line is connected by elbow with buried steam line; Described built on stilts steam line comprises built on stilts steam line body, at least 2 layers of aerial pipeline thermal insulation layer, at least 1 layer of aerial pipeline reflecting layer, 1 layer of water-proof heat-insulation layer and 1 layer of protective layer; First layer aerial pipeline thermal insulation layer is wrapped in built on stilts steam line body exterior, fissure of displacement overlap joint between each aerial pipeline thermal insulation layer; Described aerial pipeline reflecting layer parcel alternate with aerial pipeline thermal insulation layer; It is outside that described water-proof heat-insulation layer is wrapped in last one deck aerial pipeline thermal insulation layer; Described protective layer is wrapped in water-proof heat-insulation layer outside; Described buried steam line comprises buried steam line body, 1 layer of hot melt friction layer, at least 1 layer of buried pipeline thermal insulation layer, at least 1 layer of buried pipeline reflecting layer, 1 layer of supporting layer, 1 layer of outer steel pipe and 1 strata urea anticorrosive coat; Described hot melt friction layer is coated on the outer surface of buried steam line body, prevents buried steam line body from occurring corrode and increase the frictional force between buried steam line body and thermal insulating material; It is outside that first layer buried pipeline thermal insulation layer is wrapped in hot melt friction layer, fissure of displacement overlap joint between each buried pipeline thermal insulation layer; The number of plies in described buried pipeline reflecting layer is identical with the number of plies of buried pipeline thermal insulation layer, buried pipeline reflecting layer parcel alternate with buried pipeline thermal insulation layer; It is outside that described supporting layer is wrapped in last one deck buried pipeline reflecting layer; Described outer steel pipe is wrapped in supporting layer outside; Described polyurea anti-corrosion layer is wrapped in outer steel pipe outside.
The preferred technological scheme of built on stilts steam line of the present invention is:
Described built on stilts steam line comprises built on stilts steam line body, 4 layers of aerial pipeline thermal insulation layer, 3 layers of aerial pipeline reflecting layer, 1 layer of water-proof heat-insulation layer and 1 layer of protective layer; 4 layers of aerial pipeline thermal insulation layer are followed successively by aerial pipeline first thermal insulation layer, aerial pipeline second thermal insulation layer, aerial pipeline the 3rd thermal insulation layer and aerial pipeline the 4th thermal insulation layer outward from interior; 3 layers of aerial pipeline reflecting layer are followed successively by aerial pipeline first reflecting layer, aerial pipeline second reflecting layer and aerial pipeline the 3rd reflecting layer outward from interior; Described aerial pipeline first thermal insulation layer is wrapped in built on stilts steam line body exterior, fissure of displacement overlap joint between adjacent frame vacant duct thermal insulation layer; It is outside that described aerial pipeline first reflecting layer is wrapped in aerial pipeline first thermal insulation layer; Described aerial pipeline reflecting layer parcel alternate with aerial pipeline thermal insulation layer; It is outside that described water-proof heat-insulation layer is wrapped in aerial pipeline the 4th thermal insulation layer; Described protective layer is wrapped in water-proof heat-insulation layer outside.
Further, described aerial pipeline first thermal insulation layer and aerial pipeline second thermal insulation layer are the hydrophobic type alumina silicate needle punched blanket of thickness 35-50mm; Described aerial pipeline the 3rd thermal insulation layer and aerial pipeline the 4th thermal insulation layer are the high temperature glass wool felt of thickness 50-65mmmm.
As preferably, described hydrophobic type alumina silicate needle punched blanket maximum operation (service) temperature is 1140 DEG C, and when 70 DEG C, thermal conductivity is 0.044W/ (mK); Described high temperature glass wool felt maximum operation (service) temperature is 450 DEG C, and when 70 DEG C, thermal conductivity is 0.032W/ (mK).
Further, described aerial pipeline first reflecting layer, aerial pipeline second reflecting layer and aerial pipeline the 3rd reflecting layer are reflective aluminum.
As preferably, the thickness of described reflective aluminum is 10-20 μm.
As preferably, described reflective aluminum is two-sided smooth, and reflectivity is greater than 0.97.
Described reflective aluminum adopts reflective aluminium foil.
Aerial pipeline first thermal insulation layer, aerial pipeline second thermal insulation layer, aerial pipeline the 3rd thermal insulation layer and aerial pipeline the 4th thermal insulation layer are tied up with strapping strand respectively, and it is mutually bonding that every layer of aerial pipeline reflecting layer and the aerial pipeline thermal insulation layer wrapped up in it pass through glue; Described glue is high-temperature plastic.For the steam line (i.e. built on stilts steam line body) of DN≤200mm, tie up every 200mm strapping strand; For the steam line of 200mm < DN < 600mm, 200mm < ties up spacing≤300mm; For the steam line of DN >=600mm, 300mm < ties up spacing≤400mm.Per pass strapping strand need be tied up separately, forbids strapping strand two ends spiral to be tied up.When having two-layer or two-layer above aerial pipeline thermal insulation layer, each aerial pipeline thermal insulation layer needs layering to tie up.When tying up, dynamics wants appropriate, is advisable to be adjacent between thermal insulating material and steel pipe (i.e. built on stilts steam line body) or thermal insulating material.Tying up can not be too tight, to prevent from reducing heat insulation effect; Tying up can not too pine, comes off, sedimentation to prevent thermal insulating material.
Further, described water-proof heat-insulation layer is bubble aluminium.Described bubble aluminium upper and lower surface is reflective aluminum, and intermediate course is double layer cell bubble thermal-protective coating.As preferably, described bubble aluminium thickness is 4-8mm.
Further, described protective layer is the color steel that 0.5-1mm is thick.
Buried steam line of the present invention further preferred technological scheme is:
Described buried steam line comprises buried steam line body, 1 layer of hot melt friction layer, 4 layers of buried pipeline thermal insulation layer, 4 layers of buried pipeline reflecting layer, 1 layer of supporting layer, 1 layer of outer steel pipe and 1 strata urea anticorrosive coat; 4 layers of buried pipeline thermal insulation layer are followed successively by buried pipeline first thermal insulation layer, buried pipeline second thermal insulation layer, buried pipeline the 3rd thermal insulation layer and buried pipeline the 4th thermal insulation layer outward from interior; 4 layers of buried pipeline reflecting layer are followed successively by buried pipeline first reflecting layer, buried pipeline second reflecting layer, buried pipeline the 3rd reflecting layer and buried pipeline the 4th reflecting layer outward from interior; Described hot melt friction layer is coated on the outer surface of buried steam line body; It is outside that described buried pipeline first thermal insulation layer is wrapped in hot melt friction layer, fissure of displacement overlap joint between adjacent buried pipeline thermal insulation layer; It is outside that described buried pipeline first reflecting layer is wrapped in buried pipeline first thermal insulation layer; Described buried pipeline reflecting layer parcel alternate with buried pipeline thermal insulation layer; It is outside that described supporting layer is wrapped in buried pipeline the 4th reflecting layer; Described outer steel pipe is wrapped in supporting layer outside; Described polyurea anti-corrosion layer is wrapped in outer steel pipe outside.
Further, described hot melt friction layer adopts 3PE anticorrosion structure (i.e. 3-tier architecture polyolefin coating), first layer epoxy powder > 100 μm, second layer adhesive 170-250 μm, third layer polyethylene 2.5-3.7mm, three kinds of materials combine together, and form excellent anticorrosive coat with steel pipe strong bonded.Described hot melt friction layer can strengthen the cohesive force between steel pipe (i.e. buried steam line body) and buried pipeline first thermal insulation layer, improves the stability that buried steam line runs.
Further, leakage alarm line is set outside described buried pipeline second thermal insulation layer.
Further, described buried pipeline first thermal insulation layer and buried pipeline second thermal insulation layer are the silica (SiO of thickness 10-20mm
2) aerogel blanket, described buried pipeline the 3rd thermal insulation layer and buried pipeline the 4th thermal insulation layer are the high temperature glass wool felt of thickness 40-50mm.
As preferably, described aerosil felt maximum operation (service) temperature is 650 DEG C, and 25 DEG C of thermal conductivitys are 0.018w/ (mK).Described high temperature glass wool felt maximum operation (service) temperature is 450 DEG C, and 70 DEG C of thermal conductivitys are 0.032W/ (mK).
Further, described buried pipeline first reflecting layer, buried pipeline second reflecting layer, buried pipeline the 3rd reflecting layer and buried pipeline the 4th reflecting layer are reflective aluminum.
As preferably, described reflective aluminum thickness 10-20 μm.
As preferably, described reflective aluminum is two-sided smooth, and reflectivity is greater than 0.97.
Described reflective aluminum adopts reflective aluminium foil.
Described buried pipeline first thermal insulation layer, buried pipeline second thermal insulation layer, buried pipeline the 3rd thermal insulation layer and buried pipeline the 4th thermal insulation layer are tied up with strapping strand respectively, and it is mutually bonding that every layer of buried pipeline reflecting layer and the buried pipeline thermal insulation layer wrapped up in it pass through glue; Described glue is high-temperature plastic.For the steam line (i.e. buried steam line body) of DN≤200mm, tie up every 200mm strapping strand; For the steam line of 200mm < DN < 600mm, 200mm < ties up spacing≤300mm; For the steam line of DN >=600mm, 300mm < ties up spacing≤400mm.Per pass strapping strand need be tied up separately, forbids strapping strand two ends spiral to be tied up.When having two-layer or two-layer above buried pipeline thermal insulation layer, each buried pipeline thermal insulation layer needs layering to tie up.When tying up, dynamics wants appropriate, is advisable to be adjacent between thermal insulating material and steel pipe or thermal insulating material.Tying up can not be too tight, to prevent from reducing heat insulation effect; Tying up can not too pine, comes off, sedimentation to prevent thermal insulating material.
Further, described supporting layer is hard polyurethane ester layer.Hard polyaminoester can be poured into a mould in foam-in-place, and serviceability temperature is no more than 130 DEG C.The effect one of supporting layer supports, and two is waterproof, and three is insulations.
Further, described polyurea anti-corrosion layer is that polyurea anti-corrosion coating is coated in the formation of outer steel pipe outside.
As steam low energy consumption long distance delivery device of the present invention preferred technological scheme further:
Described built on stilts steam line and buried steam line all arrange steam trap connection, and described steam trap connection adopts supervisor's threeway to add end enclosure structure.In order to utilize heat energy better, preventing the generation of the phenomenon such as water hammer, burn into leakage and steam trap connection is set.Before the end or minimum point, reduction valve and control valve of steam low energy consumption long distance delivery device, temperature control device place arranges steam trap connection.Generally, built on stilts steam line and buried steam line arrange a hydrophobic installation steam trap connection every 30-50m.Described steam trap connection comprises collector pipe, filtering grid plate and drain pipe; Described collector pipe is located at bottom built on stilts steam line or buried steam line, and the top of collector pipe and the connecting port place of built on stilts steam line or buried steam line are provided with filtering grid plate, the sealed bottom of collector pipe; Described drain pipe inserts in collector pipe, and the water intake of drain pipe is positioned at bottom collector pipe, and water outlet is positioned at outside collector pipe.Filtering grid plate, while avoiding impurity to block drain pipe, can ensure that again steam trap connection is stable, run efficiently.
The caliber d of described collector pipe
1with length L
1meet following requirement: as working pipe (i.e. built on stilts steam line or buried steam line) caliber d≤100mm, d
1=d, L
1>=100mm; As working pipe caliber 100mm < d≤200mm, d
1=100mm, L
1=150mm; As working pipe caliber d>=200mm, d
1>=d/2, L
1>=d.
Further, the bottom of described collector pipe adopts circular head to seal; The water intake of described drain pipe is angle.Further, the water intake gradient of described drain pipe is 45 °, and water intake adopts 45 ° of gradients to arrange the water inlet area further increasing drain pipe.Described drain pipe can select L-type drain pipe.
As steam low energy consumption long distance delivery device of the present invention preferred technological scheme further:
Described built on stilts steam line is provided with aerial pipeline antivibration Thermal insulative pipe carrier, and described buried steam line is provided with buried pipeline antivibration Thermal insulative pipe carrier; Thermal insulative pipe carrier maximum spacing calculates according to strength condition and rigidity (or amount of deflection) condition and determines, gets its smaller value.When amount of deflection is less, in conventional caliber scope and temperature range, conduit saddle spacing controls with rigidity condition.When operating temperature is higher, and when piping load is larger, small pipeline often determines conduit saddle spacing according to rigidity condition.Described aerial pipeline antivibration Thermal insulative pipe carrier and ground pipeline antivibration Thermal insulative pipe carrier include antivibration heat insulating casting material and water the hard shock resistant heat insulating layer built up, the soft thermal-protective coating that heat insulation soft felt becomes, and steel structure.Described aerial pipeline antivibration Thermal insulative pipe carrier and ground pipeline antivibration Thermal insulative pipe carrier can bear 1000 DEG C of high temperature, and 550 DEG C of thermal conductivitys are 0.14 ~ 0.18W/ (mK), and compressive strength is 10 ~ 15.8MPa, and bending strength is 4.5 ~ 6MPa.
Described aerial pipeline antivibration Thermal insulative pipe carrier comprises pipe clamp, the first lower tube clip and bolt fastener group on the first hard shock resistant heat insulating layer, the first soft thermal-protective coating, riser, floor, base plate, first; On described first, to be fastened by bolts part group in addition fastening for pipe clamp and the first lower tube clip, forms built on stilts steam line conduit saddle; In built on stilts steam line conduit saddle, be provided with the first hard shock resistant heat insulating layer, the first soft thermal-protective coating, the described first soft thermal-protective coating is close to built on stilts steam line, is provided with the first hard shock resistant heat insulating layer outside the described first soft thermal-protective coating; Be connected with base plate through riser and floor bottom the first described lower tube clip, base plate is placed on supporting plane.
Further, pipe clamp and the first lower tube clip are steel pipe clamp on described first; The first described lower tube clip and riser and floor are by being welded and fixed, and described base plate and riser, floor are by being welded and fixed.
Described buried pipeline antivibration Thermal insulative pipe carrier comprises pipe clamp, the second lower tube clip and bolt fastener group on the second hard shock resistant heat insulating layer, the second soft thermal-protective coating, second; On described second, pipe clamp is outwards bent to form connection otic placode, and the second lower tube clip connects otic placode under bending inwards and being formed, and upper and lower otic placode is fastened by bolts the formation of part group and is fastenedly connected, and forms buried steam line conduit saddle; In buried steam line conduit saddle, be provided with the second hard shock resistant heat insulating layer, the second soft thermal-protective coating, the second soft thermal-protective coating is close to the supporting layer of buried steam line, is wrapped with the second hard shock resistant heat insulating layer at the described second soft thermal-protective coating.At the outer steel pipe of the outer sheathed buried steam line of described buried pipeline antivibration Thermal insulative pipe carrier.Antivibration heat insulating casting material builds that the second hard shock resistant heat insulating layer top of formation is thin, bottom is thick, and top forms confined air and to draw last breath thermosphere, and load-bearing and heat insulation is played in bottom.
Further, at the second described lower tube clip arranged outside teflon friction pair, to reduce friction.
Described antivibration heat insulating casting material is made up of the A that gathers materials, aluminate cement B, alkali-free glass fibre C and expanded perlite D, and the mass ratio of formula composition is:
1)A:B＝(50-70):(30-40)，
2) C:E=(1-4): (85-100); E represents AB mixture,
3)D:E＝(1-4)：(85-100)；
4) water: E=(15-25): (85-100), the mass percent sum of each component is 100%;
The described A that gathers materials is made up of lightweight micro mist 40-50%, pulverized fuel ash 40-50%, vermiculite 5-10%.
The particle diameter of described lightweight micro mist is 0.5-3mm.Described lightweight micro mist is one or more in silicon powder, silicon carbide micro-powder, alumina powder, quartz micropowder.
The particle diameter of described aglite vermiculite is 1-5mm.
The particle diameter of described expanded perlite D is 0.5-2.5mm.
The length of described alkali-free glass fibre C is 0.5-4mm, and diameter is 0.3-1mm.
The trade mark of described aluminate cement B is CA-50-G6.
Beneficial effect of the present invention:
By integrated use pipeline heat-insulating technology, the hydrophobic technology of pipeline and pipeline antivibration heat-insulating technique, while guarantee pipe-line system security of operation, effectively can reduce the thermal loss in high-temperature steam course of conveying, improve source benefit, reduce heat user cost of production.Adopt steam low energy consumption long distance delivery technology disclosed by the invention, when steam line conveying load is more than 30% of Design cooling load time, within steam reduces to every kilometer of temperature drop 3 ~ 5 DEG C by every kilometer of temperature drop 15 ~ 20 DEG C of conventional design, steam Transportation distance can reach 30 ~ 40 kilometers.In addition, steam line is hydrophobic safer, efficient; Steam pipeline support is more energy-conservation, has the multiple function such as antivibration and sound absorption simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of built on stilts steam line of the present invention;
Fig. 2 is the sectional view of built on stilts steam line of the present invention;
Fig. 3 is the structural representation of buried steam line of the present invention;
Fig. 4 is the sectional view of buried steam line of the present invention;
Fig. 5 is the structural representation of steam trap connection of the present invention;
The A-A' generalized section that Fig. 6 is structure shown in Fig. 5;
Fig. 7 is filtering grid plate structure schematic diagram;
Fig. 8 is the structural representation of aerial pipeline antivibration Thermal insulative pipe carrier of the present invention;
Fig. 9 is the structural representation of buried pipeline antivibration Thermal insulative pipe carrier of the present invention.
In figure, 1-makes somebody a mere figurehead steam line body; 2-aerial pipeline first thermal insulation layer; 3-aerial pipeline second thermal insulation layer; 4-aerial pipeline the 3rd thermal insulation layer; 5-aerial pipeline the 4th thermal insulation layer; 6-water-proof heat-insulation layer; 7-protective layer; 8-strapping strand; 9a-aerial pipeline first reflecting layer; 9b-aerial pipeline second reflecting layer; 9c-aerial pipeline the 3rd reflecting layer; The buried steam line body of 10-; 11-hot melt friction layer; 12-buried pipeline first thermal insulation layer; 13-buried pipeline second thermal insulation layer; 14-buried pipeline the 3rd thermal insulation layer; 15-buried pipeline the 4th thermal insulation layer; 16-supporting layer; 17-outer steel pipe; 18-polyurea anti-corrosion layer; 19a-buried pipeline first reflecting layer; 19b-buried pipeline second reflecting layer; 19c-buried pipeline third layer reflecting layer; 19d-buried pipeline the 4th layer of reflecting layer; 20-collector pipe; 21-drain pipe; 22-circular head; 23-filtering grid plate; 24-first hard shock resistant heat insulating layer; The soft thermal-protective coating of 25-first; 26-riser; 27-floor; 28-base plate; Pipe clamp on 29-first; 30-first lower tube clip; 31-bolt fastener group; 32-teflon friction pair; Pipe clamp on 33-second; 34-second lower tube clip; 35-second hard shock resistant heat insulating layer; The soft thermal-protective coating of 36-second.
Embodiment
In order to set forth technological scheme of the present invention and technical purpose, below in conjunction with the drawings and specific embodiments, the present invention is further introduced.
A kind of steam low energy consumption long distance delivery device, comprises built on stilts steam line and/or buried steam line.In inevitable situation as in the situation such as road, building, steam low energy consumption long distance delivery device selects the combination of built on stilts steam line and buried steam line, and described built on stilts steam line is connected by elbow with buried steam line.
As depicted in figs. 1 and 2, described built on stilts steam line, comprises built on stilts steam line body 1,4 layers of aerial pipeline thermal insulation layer, 3 layers of aerial pipeline reflecting layer, water-proof heat-insulation layer 6 and protective layer 7; 4 layers of aerial pipeline thermal insulation layer are followed successively by aerial pipeline first thermal insulation layer 2, aerial pipeline second thermal insulation layer 3, aerial pipeline the 3rd thermal insulation layer 4 and aerial pipeline the 4th thermal insulation layer 5 outward from interior; 3 layers of aerial pipeline reflecting layer are followed successively by aerial pipeline first reflecting layer 9a, aerial pipeline second reflecting layer 9b and aerial pipeline the 3rd reflecting layer 9c outward from interior; Described aerial pipeline reflecting layer parcel alternate with aerial pipeline thermal insulation layer, be specially: it is outside that aerial pipeline first thermal insulation layer 2, aerial pipeline first reflecting layer 9a, aerial pipeline second thermal insulation layer 3, aerial pipeline second reflecting layer 9b, aerial pipeline the 3rd thermal insulation layer 4, aerial pipeline the 3rd reflecting layer 9c, aerial pipeline the 4th thermal insulation layer 5 are wrapped in built on stilts steam line body 1 successively, fissure of displacement overlap joint between adjacent frame vacant duct thermal insulation layer; It is outside that described water-proof heat-insulation layer 6 is wrapped in aerial pipeline the 4th thermal insulation layer 5; It is outside that described protective layer 7 is wrapped in water-proof heat-insulation layer 6.
Described aerial pipeline first thermal insulation layer and aerial pipeline second thermal insulation layer are the hydrophobic type alumina silicate needle punched blanket of thickness 40mm; Described aerial pipeline the 3rd thermal insulation layer and aerial pipeline the 4th thermal insulation layer are the high temperature glass wool felt of thickness 60mm.Hydrophobic type alumina silicate needle punched blanket maximum operation (service) temperature is 1140 DEG C, and when 70 DEG C, thermal conductivity is 0.044W/ (mK); High temperature glass wool felt maximum operation (service) temperature is 450 DEG C, and when 70 DEG C, thermal conductivity is 0.032W/ (mK).
The material in described aerial pipeline first reflecting layer, aerial pipeline second reflecting layer and aerial pipeline the 3rd reflecting layer is the reflective aluminum of thickness 10-20 μm.Described reflective aluminum is two-sided smooth, and the reflectivity of reflective aluminum is 0.97.
Described aerial pipeline first reflecting layer 9a, aerial pipeline second reflecting layer 9b and aerial pipeline the 3rd reflecting layer 9c and the parcel aerial pipeline thermal insulation layer in it is mutually bonding by high-temperature plastic.
Described water-proof heat-insulation layer 6 material therefor is the bubble aluminium of thick 6mm.Described protective layer 7 material therefor is the color steel of thick 0.5mm.
As shown in Figure 3 and Figure 4, described buried steam line comprises buried steam line body 10,1 layer of hot melt friction layer 11,4 layers of buried pipeline thermal insulation layer, 4 layers of buried pipeline reflecting layer, supporting layer 16, outer steel pipe 17 and polyurea anti-corrosion layer 18; 4 layers of buried pipeline thermal insulation layer are followed successively by buried pipeline first thermal insulation layer 12, buried pipeline second thermal insulation layer 13, buried pipeline the 3rd thermal insulation layer 14 and buried pipeline the 4th thermal insulation layer 15 outward from interior; 4 layers of buried pipeline reflecting layer are followed successively by buried pipeline first reflecting layer 19a, buried pipeline second reflecting layer 19b, buried pipeline the 3rd reflecting layer 19c and buried pipeline the 4th reflecting layer 19d outward from interior; Described hot melt friction layer 11 is coated on the outer surface of buried steam line body 10; It is outside that described buried pipeline first thermal insulation layer 12 is wrapped in hot melt friction layer 11, fissure of displacement overlap joint between adjacent buried pipeline thermal insulation layer; It is outside that described buried pipeline first reflecting layer is wrapped in buried pipeline first thermal insulation layer, described buried pipeline reflecting layer parcel alternate with buried pipeline thermal insulation layer, is specially: it is outside that buried pipeline first thermal insulation layer 12, buried pipeline first reflecting layer 19a, buried pipeline second thermal insulation layer 13, buried pipeline second reflecting layer 19b, buried pipeline the 3rd thermal insulation layer 14, buried pipeline the 3rd reflecting layer 19c, buried pipeline the 4th thermal insulation layer 15, buried pipeline the 4th reflecting layer 19d are wrapped in hot melt friction layer 11 successively; It is outside that described supporting layer 16 is wrapped in aerial pipeline the 4th reflecting layer 19d; It is outside that described outer steel pipe 17 is wrapped in supporting layer 16; It is outside that described polyurea anti-corrosion layer 18 is wrapped in outer steel pipe 17.
Described hot melt friction layer adopts 3PE anticorrosion structure, first layer epoxy powder > 100 μm, second layer adhesive 170-250 μm, third layer polyethylene 2.5-3.7mm.Three kinds of materials combine together, and form excellent anticorrosive coat with steel pipe strong bonded.Described hot melt friction layer can strengthen the cohesive force between steel pipe and thermal insulation layer, improves the stability that buried pipeline runs.
Described polyurea anti-corrosion layer is that polyurea anti-corrosion coating is coated in the formation of outer steel pipe outside.
Described buried pipeline first thermal insulation layer 12 and buried pipeline second thermal insulation layer 13 are the silica (SiO of thickness 10mm
2) aerogel blanket, described buried pipeline the 3rd thermal insulation layer 14 and buried pipeline the 4th thermal insulation layer 15 are the high temperature glass wool felt of thickness 50mm.Aerosil felt maximum operation (service) temperature is 650 DEG C, and 25 DEG C of thermal conductivitys are 0.018w/ (mK).High temperature glass wool felt maximum operation (service) temperature is 450 DEG C, and 70 DEG C of thermal conductivitys are 0.032W/ (mK).
Described buried pipeline first reflecting layer 19a, buried pipeline second reflecting layer 19b, buried pipeline the 3rd reflecting layer 19c and buried pipeline the 4th reflecting layer 19d are the reflective aluminum that thickness is 10-20 μm.Described reflective aluminum is two-sided smooth, and the reflectivity of reflective aluminum is 0.97.
It is mutually bonding that described buried pipeline first reflecting layer 19a, buried pipeline second reflecting layer 19b, buried pipeline the 3rd reflecting layer 19c and buried pipeline the 4th reflecting layer 19d and the buried pipeline thermal insulation layer wrapped up in it pass through high-temperature plastic.
Described supporting layer 16 material therefor is hard polyaminoester.
For effective protection against the tide, adopt the technical requirements of hard polyaminoester as follows:
(1) unit weight is 50kg/m
3;
(2) 25 DEG C of thermal conductivitys are 0.02W/ (mk);
(3) rate of closed hole >=98%;
(3) oxygen index is 30;
(4) water absorption rate≤2%;
(5) serviceability temperature is no more than 130 DEG C;
(6) can foam-in-place pour into a mould;
For ensureing that buried steam line does not corrode, galvanic anode protection method is adopted for the buried steam line of length more than 50 meters.Cathodic protection performs GB/T21448-2008 " buried steel pipeline cathode protection technology specification ".
Make somebody a mere figurehead each thermal insulation layer in steam line and buried steam line and tie up technique: for the steam line (i.e. built on stilts steam line body or buried steam line body) of DN≤200mm, tie up every 200mm strapping strand 8; For the steam line of DN < 600mm, tie up spacing≤300mm; For the steam line of DN >=600mm, tie up spacing≤400mm.Per pass strapping strand 8 need be tied up separately, forbids strapping strand 8 two ends spiral to be tied up.Thermal insulation layer by two-layer or two-layer above form time, each thermal insulation layer needs layering to tie up.When tying up, dynamics wants appropriate, is advisable to be adjacent between thermal insulating material and steel pipe or thermal insulating material.Tying up can not be too tight, to prevent from reducing heat insulation effect; Tying up can not too pine, comes off, sedimentation to prevent thermal insulating material.
The breathing that pipeline can produce due to temperature variation, adopts whirl compensator to compensate.Thermal expansion amount must be reserved during conventional vapor pipe insulation, adopt rotation compensation mode need not reserve thermal expansion amount, steam heat waste can be reduced.
Before the end or minimum point, reduction valve and control valve of steam low energy consumption long distance delivery device, temperature control device place arranges steam trap connection.Generally, built on stilts steam line and buried steam line arrange a hydrophobic installation steam trap connection every 30-50m.
As illustrated in figs. 5-7, described steam trap connection is made up of working pipe (built on stilts steam line or buried steam line), collector pipe 20, drain pipe 21 and filtering grid plate 23 etc.Described collector pipe 20 is located at the bottom of working pipe, and described collector pipe 20 top and the connecting port of working pipe are provided with filtering grid plate 23, and the bottom of collector pipe 20 adopts circular head 22 to seal, and described drain pipe 21 inserts in collector pipe 20.
Described steam trap connection comprises collector pipe 20, filtering grid plate 23 and drain pipe 21; Described collector pipe 20 is located at the bottom of built on stilts steam line or buried steam line, and the top of collector pipe 20 and the connecting port place of built on stilts steam line or buried steam line are provided with filtering grid plate 23, and the bottom of collector pipe 20 adopts circular head 22 to seal; Described drain pipe 21 inserts in collector pipe 20, and the water intake of drain pipe 21 is positioned at bottom collector pipe 20, and water outlet is positioned at outside collector pipe 20; The water intake of described drain pipe 21 is 45 ° of angles.
Described filtering grid plate 23 upper punch has width to be about 8mm filter bag some.
The caliber d of described collector pipe 20
1with length L
1meet following requirement: when built on stilts steam line or buried steam line caliber d≤100mm, d
1=d, L
1>=100mm; When built on stilts steam line or buried steam line caliber 100mm < d≤200mm, d
1=100mm, L
1=150mm; When built on stilts steam line or buried steam line caliber d>=200mm, d
1>=d/2, L
1>=d.
Described built on stilts steam line is provided with aerial pipeline antivibration Thermal insulative pipe carrier, and described buried steam line is provided with buried pipeline antivibration Thermal insulative pipe carrier; Thermal insulative pipe carrier maximum spacing calculates according to strength condition and rigidity (or amount of deflection) condition and determines, gets its smaller value.When amount of deflection is less, in conventional caliber scope and temperature range, conduit saddle spacing controls with rigidity condition.When operating temperature is higher, and when piping load is larger, small pipeline often determines conduit saddle spacing according to rigidity condition.The technical requirements of antivibration Thermal insulative pipe carrier is as follows:
(1) as shown in Figure 8, described aerial pipeline antivibration Thermal insulative pipe carrier comprises pipe clamp 29, first lower tube clip 30 and bolt fastener group 31 on the soft thermal-protective coating 25 of the first hard shock resistant heat insulating layer 24, first, riser 26, floor 27, base plate 28, first; On described first, to be fastened by bolts part group 31 in addition fastening for pipe clamp 29 and the first lower tube clip 30, forms built on stilts steam line conduit saddle for clamping built on stilts steam line; In built on stilts steam line conduit saddle, be provided with the soft thermal-protective coating 25 of the first hard shock resistant heat insulating layer 24, first, the described first soft thermal-protective coating 25 is close to built on stilts steam line, is provided with the first hard shock resistant heat insulating layer 24 outside the described first soft thermal-protective coating 25; Be connected with base plate 28 through riser 26 and floor 27 bottom the first described lower tube clip 30, base plate 28 is placed on supporting plane.
On described first, pipe clamp 29 and the first lower tube clip 30 are steel pipe clamp; Described first lower tube clip 30 and riser 26 and floor 27 are by being welded and fixed, and described base plate 28 and riser 26, floor 27 are by being welded and fixed.
(2) as shown in Figure 9, described buried pipeline antivibration Thermal insulative pipe carrier, comprises pipe clamp 33, second lower tube clip 34 and bolt fastener group 31 on the soft thermal-protective coating 36, second of the second hard shock resistant heat insulating layer 35, second; On described second, pipe clamp 33 is outwards bent to form connection otic placode, and the second lower tube clip 34 connects otic placode under bending inwards and being formed, and upper and lower otic placode is fastened by bolts part group 31 formation and is fastenedly connected, and forms buried steam line conduit saddle for clamping buried steam line; At the second described lower tube clip 34 arranged outside teflon friction pair 32, to reduce friction; The soft thermal-protective coating 36 of the second hard shock resistant heat insulating layer 35, second is provided with in buried steam line conduit saddle, second soft thermal-protective coating 36 is close to the supporting layer 16 of buried steam line, is wrapped with the second hard shock resistant heat insulating layer 35 at the described second soft thermal-protective coating 36; At the outer steel pipe 17 of the outer sheathed buried steam line of described buried pipeline antivibration Thermal insulative pipe carrier.Antivibration heat insulating casting material builds that the second hard shock resistant heat insulating layer 35 top of formation is thin, bottom is thick, and top forms confined air and to draw last breath thermosphere, and load-bearing and heat insulation is played in bottom.
(3) conduit saddle model is made up of 7 parts, as BRHAF – 250 – 200 – 600.BR represents BR type Thermal insulative pipe carrier; H represents sliding supporter; A represents temperature range≤540 DEG C; F represents tetrafluoroethylene friction pair (not being with friction pair not mark); 250 represent pipeline nominal diameter; 200 represent conduit saddle clear height; 600 represent conduit saddle floor length.
(4) the Thermal insulative pipe carrier compressive strength that existing market generally uses is 4MPa, and 300 DEG C of thermal conductivitys are 0.3W/ (mK).Mechanics, the heat-insulating property of antivibration Thermal insulative pipe carrier of the present invention increase substantially, antivibration heat-shielding performance is remarkable: antivibration heat insulating casting material water build up first and two hard shock resistant heat insulating layer can bear 1000 DEG C of high temperature, thermal conductivity≤0.188W/ (mK) under 350 DEG C of mean temperatures.Antivibration heat insulating casting material water build up first and two hard shock resistant heat insulating layer compressive strength be 10 ~ 15.8MPa, bending strength is 4.5 ~ 6MPa, 110 DEG C baking 5 hours after volume densities be 1.1 ~ 1.4g/cm
3, there is antivibration, sound absorption, the multiple efficacies such as heat insulation simultaneously, substantially increase heat insulation and antivibration effect relative to traditional Thermal insulative pipe carrier.
Described antivibration heat insulating casting material is made up of the A that gathers materials, aluminate cement B, alkali-free glass fibre C and expanded perlite D, and the mass ratio of formula composition is:
1)A:B＝(50-70):(30-40)，
2) C:E=(1-4): (85-100); E represents AB mixture,
3)D:E＝(1-4)：(85-100)；
4) water: E=(15-25): (85-100), the mass percent sum of each component is 100%;
The described A that gathers materials is made up of lightweight micro mist 40-50%, pulverized fuel ash 40-50%, vermiculite 5-10%.
The particle diameter of described lightweight micro mist is 0.5-3mm.Described lightweight micro mist is one or more in silicon powder, silicon carbide micro-powder, alumina powder, quartz micropowder.
The particle diameter of described aglite vermiculite is 1-5mm.
The particle diameter of described expanded perlite D is 0.5-2.5mm.
The length of described alkali-free glass fibre C is 0.5-4mm, and diameter is 0.3-1mm.
The trade mark of described aluminate cement B is CA-50-G6.
(5) should ensure that heat insulation soft felt is intact when conduit saddle is installed, heat insulation soft felt should keep away from moisture in transit, otherwise affects tear strength and the heat insulation effect of heat insulation soft felt.
(6) for ensureing conduit saddle and pipeline global displacement, the relative sliding between conduit saddle and pipeline is avoided, the pre-fastening moment >=30Nm of bolt fastener group.
(7) according to caliber, medium temperature difference, the height of conduit saddle, floor length, heat insulating casting material thickness are all not identical.Height, the length of conduit saddle can require to manufacture according to design document.
By integrated use pipeline heat-insulating technology, the hydrophobic technology of pipeline and pipeline antivibration heat-insulating technique, while guarantee pipe-line system security of operation, effectively can reduce the thermal loss in high-temperature steam course of conveying, improve source benefit, reduce heat user cost of production.In addition, steam line is hydrophobic safer, efficient; Steam pipeline support is more energy-conservation, has the multiple function such as antivibration and sound absorption simultaneously.In Practical Project process of deployment, steam line single line total length about 32 kilometers, pressure of steam supply 2MPa, temperature 285 DEG C, flow 30 ~ 35t/h.Adopt steam low energy consumption long distance delivery technology disclosed by the invention, 20 kilometers of outer terminal temperature difference pressure reach 1.44MPa, and temperature reaches 215 DEG C, and every kilometer of temperature drop is about 3.6 DEG C.
Above content description basic principle of the present invention, major character and advantage thereof.Industry technician should understand, and the present invention is not restricted to the described embodiments, without departing from the spirit and scope of the present invention all, and the present invention also has various modifications and variations, and these improve and change all falls within the scope of the present invention.
Claims (10)
1. a steam low energy consumption long distance delivery device, is characterized in that:, comprise built on stilts steam line and/or buried steam line, described built on stilts steam line is connected by elbow with buried steam line; Described built on stilts steam line comprises built on stilts steam line body, at least 2 layers of aerial pipeline thermal insulation layer, at least 1 layer of aerial pipeline reflecting layer, 1 layer of water-proof heat-insulation layer and 1 layer of protective layer; First layer aerial pipeline thermal insulation layer is wrapped in built on stilts steam line body exterior, fissure of displacement overlap joint between each aerial pipeline thermal insulation layer; Described aerial pipeline reflecting layer parcel alternate with aerial pipeline thermal insulation layer; It is outside that described water-proof heat-insulation layer is wrapped in last one deck aerial pipeline thermal insulation layer; Described protective layer is wrapped in water-proof heat-insulation layer outside; Described buried steam line comprises buried steam line body, 1 layer of hot melt friction layer, at least 1 layer of buried pipeline thermal insulation layer, at least 1 layer of buried pipeline reflecting layer, 1 layer of supporting layer, 1 layer of outer steel pipe and 1 strata urea anticorrosive coat; Described hot melt friction layer is coated on the outer surface of buried steam line body, and it is outside that first layer buried pipeline thermal insulation layer is wrapped in hot melt friction layer, fissure of displacement overlap joint between each buried pipeline thermal insulation layer; The number of plies in described buried pipeline reflecting layer is identical with the number of plies of buried pipeline thermal insulation layer, buried pipeline reflecting layer parcel alternate with buried pipeline thermal insulation layer; It is outside that described supporting layer is wrapped in last one deck buried pipeline reflecting layer; Described outer steel pipe is wrapped in supporting layer outside; Described polyurea anti-corrosion layer is wrapped in outer steel pipe outside.
2. steam low energy consumption long distance delivery device according to claim 1, is characterized in that: described built on stilts steam line comprises built on stilts steam line body, 4 layers of aerial pipeline thermal insulation layer, 3 layers of aerial pipeline reflecting layer, 1 layer of water-proof heat-insulation layer and 1 layer of protective layer; 4 layers of aerial pipeline thermal insulation layer are followed successively by aerial pipeline first thermal insulation layer, aerial pipeline second thermal insulation layer, aerial pipeline the 3rd thermal insulation layer and aerial pipeline the 4th thermal insulation layer outward from interior; 3 layers of aerial pipeline reflecting layer are followed successively by aerial pipeline first reflecting layer, aerial pipeline second reflecting layer and aerial pipeline the 3rd reflecting layer outward from interior; Described aerial pipeline first thermal insulation layer is wrapped in built on stilts steam line body exterior, fissure of displacement overlap joint between adjacent frame vacant duct thermal insulation layer; It is outside that described aerial pipeline first reflecting layer is wrapped in aerial pipeline first thermal insulation layer; Described aerial pipeline reflecting layer parcel alternate with aerial pipeline thermal insulation layer; It is outside that described water-proof heat-insulation layer is wrapped in aerial pipeline the 4th thermal insulation layer; Described protective layer is wrapped in water-proof heat-insulation layer outside;
Described buried steam line comprises buried steam line body, 1 layer of hot melt friction layer, 4 layers of buried pipeline thermal insulation layer, 4 layers of buried pipeline reflecting layer, 1 layer of supporting layer, 1 layer of outer steel pipe and 1 strata urea anticorrosive coat; 4 layers of buried pipeline thermal insulation layer are followed successively by buried pipeline first thermal insulation layer, buried pipeline second thermal insulation layer, buried pipeline the 3rd thermal insulation layer and buried pipeline the 4th thermal insulation layer outward from interior; 4 layers of buried pipeline reflecting layer are followed successively by buried pipeline first reflecting layer, buried pipeline second reflecting layer, buried pipeline the 3rd reflecting layer and buried pipeline the 4th reflecting layer outward from interior; Described hot melt friction layer is coated on the outer surface of buried steam line body; It is outside that described buried pipeline first thermal insulation layer is wrapped in hot melt friction layer, fissure of displacement overlap joint between adjacent buried pipeline thermal insulation layer; It is outside that described buried pipeline first reflecting layer is wrapped in buried pipeline first thermal insulation layer; Described buried pipeline reflecting layer parcel alternate with buried pipeline thermal insulation layer; It is outside that described supporting layer is wrapped in buried pipeline the 4th reflecting layer; Described outer steel pipe is wrapped in supporting layer outside; Described polyurea anti-corrosion layer is wrapped in outer steel pipe outside.
3. steam low energy consumption long distance delivery device according to claim 2, is characterized in that: described aerial pipeline first thermal insulation layer and aerial pipeline second thermal insulation layer are the hydrophobic type alumina silicate needle punched blanket of thickness 35-50mm;
Described aerial pipeline the 3rd thermal insulation layer and aerial pipeline the 4th thermal insulation layer are the high temperature glass wool felt of thickness 50-65mm;
Described aerial pipeline first reflecting layer, aerial pipeline second reflecting layer and aerial pipeline the 3rd reflecting layer are reflective aluminum; Described reflective aluminum thickness 10-20 μm;
Described water-proof heat-insulation layer is bubble aluminium; Described bubble aluminium thickness is 5-8mm;
Described protective layer is the color steel that 0.5-1mm is thick;
Described buried pipeline first thermal insulation layer and buried pipeline second thermal insulation layer are the aerosil felt of thickness 10-20mm;
Described buried pipeline the 3rd thermal insulation layer and buried pipeline the 4th thermal insulation layer are the high temperature glass wool felt of thickness 40-50mm;
Described buried pipeline first reflecting layer, buried pipeline second reflecting layer, buried pipeline the 3rd reflecting layer and buried pipeline the 4th reflecting layer are reflective aluminum; Described reflective aluminum thickness 10-20 μm;
Described supporting layer is hard polyurethane ester layer.
4. steam low energy consumption long distance delivery device according to claim 3, is characterized in that: described aerial pipeline first thermal insulation layer, aerial pipeline second thermal insulation layer, aerial pipeline the 3rd thermal insulation layer and aerial pipeline the 4th thermal insulation layer are tied up with strapping strand respectively; It is mutually bonding that every layer of aerial pipeline reflecting layer and the aerial pipeline thermal insulation layer wrapped up in it pass through glue; Described glue is high-temperature plastic;
Described buried pipeline first thermal insulation layer, buried pipeline second thermal insulation layer, buried pipeline the 3rd thermal insulation layer and buried pipeline the 4th thermal insulation layer are tied up with strapping strand respectively, and it is mutually bonding that every layer of buried pipeline reflecting layer and the buried pipeline thermal insulation layer wrapped up in it pass through glue; Described glue is high-temperature plastic.
5. steam low energy consumption long distance delivery device according to claim 2, is characterized in that: outside described buried pipeline second thermal insulation layer, arrange leakage alarm line.
6. steam low energy consumption long distance delivery device according to claim 1 and 2, it is characterized in that: described built on stilts steam line and buried steam line all arrange steam trap connection, described steam trap connection comprises collector pipe, filtering grid plate and drain pipe; Described collector pipe is located at bottom built on stilts steam line or buried steam line, and the top of collector pipe and the connecting port place of built on stilts steam line or buried steam line are provided with filtering grid plate, the sealed bottom of collector pipe; Described drain pipe inserts in collector pipe, and the water intake of drain pipe is positioned at bottom collector pipe, and water outlet is positioned at outside collector pipe.
7. steam low energy consumption long distance delivery device according to claim 6, is characterized in that: the bottom of described collector pipe adopts circular head to seal;
The water intake that described drain pipe inserts in collector pipe is angle; The water intake gradient of described drain pipe is 45 °.
8. steam low energy consumption long distance delivery device according to claim 6, is characterized in that: the caliber d of described collector pipe
1with length L
1meet following requirement: when built on stilts steam line or buried steam line caliber d≤100mm, d
1=d, L
1>=100mm; When built on stilts steam line or buried steam line caliber 100mm < d≤200mm, d
1=100mm, L
1=150mm; When built on stilts steam line or buried steam line caliber d>=200mm, d
1>=d/2, L
1>=d.
9. steam low energy consumption long distance delivery device according to claim 1 and 2, it is characterized in that: described built on stilts steam line is provided with aerial pipeline antivibration Thermal insulative pipe carrier, described buried steam line is provided with buried pipeline antivibration Thermal insulative pipe carrier;
Described aerial pipeline antivibration Thermal insulative pipe carrier comprises pipe clamp, the first lower tube clip and bolt fastener group on the first hard shock resistant heat insulating layer, the first soft thermal-protective coating, riser, floor, base plate, first; On described first, to be fastened by bolts part group in addition fastening for pipe clamp and the first lower tube clip, forms built on stilts steam line conduit saddle; In built on stilts steam line conduit saddle, be provided with the first hard shock resistant heat insulating layer, the first soft thermal-protective coating, the described first soft thermal-protective coating is close to built on stilts steam line, is provided with the first hard shock resistant heat insulating layer outside the described first soft thermal-protective coating; Be connected with base plate through riser and floor bottom the first described lower tube clip, base plate is placed on supporting plane;
Described buried pipeline antivibration Thermal insulative pipe carrier comprises pipe clamp, the second lower tube clip and bolt fastener group on the second hard shock resistant heat insulating layer, the second soft thermal-protective coating, second; On described second, pipe clamp is outwards bent to form connection otic placode, and the second lower tube clip connects otic placode under bending inwards and being formed, and upper and lower otic placode is fastened by bolts the formation of part group and is fastenedly connected, and forms buried steam line conduit saddle; In buried steam line conduit saddle, be provided with the second hard shock resistant heat insulating layer, the second soft thermal-protective coating, the second soft thermal-protective coating is close to the supporting layer of buried steam line, is wrapped with the second hard shock resistant heat insulating layer at the described second soft thermal-protective coating.
10. steam low energy consumption long distance delivery device according to claim 9, is characterized in that: at the second described lower tube clip arranged outside teflon friction pair.
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