Steam low energy consumption long distance delivery device
Technical field
The invention belongs to Thermal Power Engineering technical field, it is related to a kind of steam low energy consumption long distance delivery device, and in particular to
Built on stilts steam pipeline heat-insulation technology and buried steam pipeline heat-insulation technology.
Background technology
With the expansion of central heating scope, especially in steam heating system, heat range of heat is increasingly longer, to temperature drop
It is required that also more and more higher.According to current conventional design, every kilometer of temperature drop of jet chimney is up to 15~20 DEG C, and pipeline heat loss reaches
10--20% is even more more.On the one hand the huge waste of the energy is caused;On the other hand it can not meet because steam temperature drop is excessive
User is required, parameter operation need to be dropped by steam turbine to meet steam quality requirement, hidden danger is brought to equipment safety production.
Jet chimney generally uses cellular insulant, and such as ceramic fibre, rock wool, mineral wool are incubated, but such
Insulation thickness is larger, invests higher.Mainly there is two ways in view of pipeline heat transfer:One is heat transfer;Two be heat radiation;
Convection heat transfer' heat-transfer by convection can be neglected.At present, by setting reflecting material in heat-insulation layer effectively to reduce pipeline radiant heat transfer amount
Technology, so as to reduce insulation thickness, but construction cost is higher, and effect has much room for improvement.
In jet chimney running, a certain amount of condensed water can be produced, need to be discharged by steam trap connection.But in medium
Impurity, such as welding slag is easily brought into the blocking that drain pipe is caused in steam trap connection.At present, the most hydrophobic dress of in the market
Put, fail the impurity in effective filter medium, influence hydrophobic effect, the operation to jet chimney brings risk.
Meanwhile, in jet chimney running, presence or steam load adjustment due to condensed water, pipe vibration are difficult to
Avoid.Traditional heat-insulating bracket often ignores vibration resistance, and its heat insulation is in the presence of oscillating load, easy cracking failure,
Potential safety hazard is also brought while leakage heat.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide in a kind of effective reduction steam course of conveying
Thermal losses, the steam low energy consumption long distance delivery device for reducing temperature drop.
The purpose of the present invention is achieved through the following technical solutions:
A kind of steam low energy consumption long distance delivery device, including built on stilts jet chimney and/or buried jet chimney;Described
Built on stilts jet chimney and buried jet chimney are connected by elbow;Described built on stilts jet chimney includes built on stilts jet chimney sheet
Body, at least 2 layer frame vacant duct heat-insulation layers, at least 1 layer frame vacant duct reflecting layer, 1 layer of water-proof heat-insulation layer and 1 layer of protective layer;First
Layer frame vacant duct heat-insulation layer is wrapped in the fissure of displacement between built on stilts jet chimney body exterior, each aerial pipeline heat-insulation layer and overlapped;It is described
Aerial pipeline reflecting layer it is alternate with aerial pipeline heat-insulation layer parcel;Described water-proof heat-insulation layer is wrapped in last layer frame blank pipe
Outside road heat-insulation layer;Described protective layer is wrapped in outside water-proof heat-insulation layer;Described buried jet chimney includes buried steam
Pipeline body, 1 layer of hot melt frictional layer, at least 1 layer buried pipeline heat-insulation layer, at least 1 layer buried pipeline reflecting layer, 1 layer of supporting layer,
1 layer of outer steel pipe and 1 strata urea anticorrosive coat;Described hot melt frictional layer is coated on the outer surface of buried jet chimney body, prevents
Only buried jet chimney body occurs to corrode and increase the frictional force between buried jet chimney body and insulation material;First layer
Buried pipeline heat-insulation layer is wrapped in outside hot melt frictional layer, and the fissure of displacement is overlapped between each buried pipeline heat-insulation layer;Described underground pipe
The number of plies in road reflecting layer is identical with the number of plies of buried pipeline heat-insulation layer, buried pipeline reflecting layer and the alternate bag of buried pipeline heat-insulation layer
Wrap up in;Described supporting layer is wrapped in outside last layer of buried pipeline reflecting layer;Described outer steel pipe is wrapped in outside supporting layer
Portion;Described polyurea anti-corrosion layer is wrapped in outside outer steel pipe.
The preferred technical scheme of built on stilts jet chimney of the present invention is:
Described built on stilts jet chimney includes built on stilts jet chimney body, 4 layer frame vacant duct heat-insulation layers, 3 layer frame vacant ducts
Reflecting layer, 1 layer of water-proof heat-insulation layer and 1 layer of protective layer;4 layer frame vacant duct heat-insulation layers are protected from the interior aerial pipeline first that is followed successively by outward
Warm layer, the heat-insulation layer of aerial pipeline second, the heat-insulation layer of aerial pipeline the 3rd and the heat-insulation layer of aerial pipeline the 4th;3 layer frame vacant ducts are anti-
Penetrate layer and be followed successively by the reflecting layer of aerial pipeline first, the reflecting layer of aerial pipeline second and the reflecting layer of aerial pipeline the 3rd outward from interior;
The described heat-insulation layer of aerial pipeline first is wrapped in the fissure of displacement between built on stilts jet chimney body exterior, adjacent aerial pipeline heat-insulation layer
Overlap joint;The described reflecting layer of aerial pipeline first is wrapped in outside the heat-insulation layer of aerial pipeline first;Described aerial pipeline reflection
Layer parcel alternate with aerial pipeline heat-insulation layer;Described water-proof heat-insulation layer is wrapped in outside the heat-insulation layer of aerial pipeline the 4th;It is described
Protective layer be wrapped in outside water-proof heat-insulation layer.
Further, the described heat-insulation layer of aerial pipeline first and the heat-insulation layer of aerial pipeline second are thickness 35-50mm
Hydrophobic type alumina silicate needle punched blanket;The described heat-insulation layer of aerial pipeline the 3rd and the heat-insulation layer of aerial pipeline the 4th is thickness 50-
65mm mm high temp glass blanket.
Preferably, described hydrophobic type alumina silicate needle punched blanket maximum operation (service) temperature is 1140 DEG C, thermal conductivity factor at 70 DEG C
For 0.044W/ (mK);Described high temp glass blanket maximum operation (service) temperature is 450 DEG C, and thermal conductivity factor is 0.032W/ at 70 DEG C
(m·K)。
Further, the described reflecting layer of aerial pipeline first, the reflecting layer of aerial pipeline second and aerial pipeline the 3rd are anti-
It is reflective aluminum to penetrate layer.
Preferably, the thickness of described reflective aluminum is 10-20 μm.
Preferably, described reflective aluminum is two-sided smooth, reflectivity is more than 0.97.
Described reflective aluminum uses reflective aluminium foil.
The heat-insulation layer of aerial pipeline first, the heat-insulation layer of aerial pipeline second, the heat-insulation layer of aerial pipeline the 3rd and aerial pipeline
Four heat-insulation layers are tied up with strapping respectively, are passed through per layer frame vacant duct reflecting layer with wrapping up the aerial pipeline heat-insulation layer in it
Glue is mutually bonded;Described glue is high-temperature plastic.(jet chimney sheet is maked somebody a mere figurehead for DN≤200mm jet chimney
Body), tied up every 200mm with strapping;For 200mm < DN < 600mm jet chimney, 200mm < tie up spacing
≤300mm;For DN >=600mm jet chimney, 300mm < tie up spacing≤400mm.Per pass strapping need to be tied individually
Prick, forbid to tie up on strapping two ends spiral.Have two layers or during more than two layers aerial pipeline heat-insulation layer, each aerial pipeline heat-insulation layer
It need to be layered and tie up.Dynamics is appropriate when tying up, with insulation material and steel pipe (making somebody a mere figurehead jet chimney body) or insulation material it
Between be adjacent to and be advisable.Tying up can not be too tight, to prevent from reducing heat insulation effect;Tying up can not be too loose, to prevent insulation material from coming off, sinking
Drop.
Further, described water-proof heat-insulation layer is bubble aluminium.Described bubble aluminium upper and lower surface is reflective aluminum, centre folder
Layer is double layer cell bubble thermal insulation layer.Preferably, described bubble aluminium thickness is 4-8mm.
Further, described protective layer is the thick color steels of 0.5-1mm.
The further preferred technical scheme of buried jet chimney of the present invention is:
Described buried jet chimney includes buried jet chimney body, 1 layer of hot melt frictional layer, 4 layers of buried pipeline 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 heat-insulation layer from
The heat-insulation layer of buried pipeline first, the heat-insulation layer of buried pipeline second, the heat-insulation layer of buried pipeline the 3rd and underground pipe are inside followed successively by outward
The heat-insulation layer of road the 4th;4 layers of buried pipeline reflecting layer are anti-from the interior reflecting layer of buried pipeline first, the buried pipeline second of being followed successively by outward
Penetrate layer, the reflecting layer of buried pipeline the 3rd and the reflecting layer of buried pipeline the 4th;Described hot melt frictional layer is coated on buried steam pipe
The outer surface of road body;The described heat-insulation layer of buried pipeline first is wrapped in outside hot melt frictional layer, adjacent buried pipeline insulation
The fissure of displacement is overlapped between layer;The described reflecting layer of buried pipeline first is wrapped in outside the heat-insulation layer of buried pipeline first;Described buries
Ground penstock reflection layer parcel alternate with buried pipeline heat-insulation layer;Described supporting layer is wrapped in outside the reflecting layer of buried pipeline the 4th
Portion;Described outer steel pipe is wrapped in outside supporting layer;Described polyurea anti-corrosion layer is wrapped in outside outer steel pipe.
Further, described hot melt frictional layer uses 3PE anticorrosion structures (i.e. 3-tier architecture polyolefin coating), first layer
100 μm of epoxy powder >, 170-250 μm of second layer adhesive, 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 frictional layer can strengthen steel pipe (i.e. buried jet chimney sheet
Body) cohesive force between the heat-insulation layer of buried pipeline first, improves the stability of buried jet chimney operation.
Further, leakage alarm line is set outside the described heat-insulation layer of buried pipeline second.
Further, the described heat-insulation layer of buried pipeline first and the heat-insulation layer of buried pipeline second are thickness 10-20mm
Silica (SiO2) aerogel blanket, the described heat-insulation layer of buried pipeline the 3rd and the heat-insulation layer of buried pipeline the 4th is thickness
40-50mm high temp glass blanket.
Preferably, described aerosil felt maximum operation (service) temperature is 650 DEG C, 25 DEG C of thermal conductivity factors are
0.018w/(m·K).Described high temp glass blanket maximum operation (service) temperature is 450 DEG C, and 70 DEG C of thermal conductivity factors are 0.032W/ (m
K)。
Further, the described reflecting layer of buried pipeline first, the reflecting layer of buried pipeline second, buried pipeline the 3rd reflect
Layer and the reflecting layer of buried pipeline the 4th are reflective aluminum.
Preferably, 10-20 μm described of reflective aluminum thickness.
Preferably, described reflective aluminum is two-sided smooth, reflectivity is more than 0.97.
Described reflective aluminum uses reflective aluminium foil.
The described heat-insulation layer of buried pipeline first, the heat-insulation layer of buried pipeline second, the heat-insulation layer of buried pipeline the 3rd and buried
The heat-insulation layer of pipeline the 4th is tied up with strapping respectively, and every layer of buried pipeline reflecting layer is incubated with the buried pipeline wrapped up in it
Layer is mutually bonded by glue;Described glue is high-temperature plastic.For DN≤200mm jet chimney (i.e. buried steam pipe
Road body), tied up every 200mm with strapping;For 200mm < DN < 600mm jet chimney, 200mm < are tied up
Spacing≤300mm;For DN >=600mm jet chimney, 300mm < tie up spacing≤400mm.Per pass strapping need to carry out list
Solely tie up, forbid to tie up on strapping two ends spiral.Have two layers or during more than two layers buried pipeline heat-insulation layer, each buried pipeline is protected
Warm layer need to be layered and tie up.Dynamics is appropriate when tying up, and is advisable with being adjacent between insulation material and steel pipe or insulation material.Tie up not
Can be too tight, to prevent from reducing heat insulation effect;Tying up can not be too loose, to prevent insulation material from coming off, settling.
Further, described supporting layer is hard polyurethane ester layer.Hard polyaminoester can foam-in-place cast, temperature in use
No more than 130 DEG C.The effect one of supporting layer is support, and two be waterproof, and three be insulation.
Further, described polyurea anti-corrosion layer is coated in formation outside outer steel pipe for polyurea anti-corrosion coating.
It is used as the further preferred technical scheme of steam low energy consumption long distance delivery device of the present invention:
Described built on stilts jet chimney and buried jet chimney are respectively provided with steam trap connection, and the steam trap connection is using supervisor three
It is logical to seal up header structure.In order to better profit from heat energy, prevent the generations of phenomenon such as water hammer, burn into leakage and steam trap connection is set.
Set before the end of steam low energy consumption long distance delivery device or minimum point, pressure-reducing valve and control valve, at temperature control device hydrophobic
Device.Generally, make somebody a mere figurehead jet chimney and buried jet chimney sets a hydrophobic point to install hydrophobic dress every 30-50m
Put.Described steam trap connection includes collector pipe, filter grid screen and drain pipe;Described collector pipe be located at built on stilts jet chimney or
Buried jet chimney bottom, the top of collector pipe at the connected entrance of built on stilts jet chimney or buried jet chimney with being provided with filter grid
Screen, the sealed bottom of collector pipe;In described drain pipe insertion collector pipe, the water inlet of drain pipe is located at bottom of the tube of catchmenting,
Delivery port is located at outside collector pipe.Filter grid screen while avoiding impurity from blocking drain pipe, can ensure again steam trap connection it is stable,
Efficiently run.
The caliber d of described collector pipe1With length L1Meet claimed below:When instrumentation tubes (make somebody a mere figurehead jet chimney or buried
Jet chimney) caliber d≤100mm when, d1=d, L1≥100mm;As instrumentation tubes caliber 100mm < d≤200mm, d1=
100mm, L1=150mm;As instrumentation tubes caliber d >=200mm, d1>=d/2, L1≥d。
Further, the bottom of described collector pipe is sealed using circular head;The water inlet of described drain pipe
For angle.Further, the water inlet gradient of described drain pipe is 45 °, and water inlet sets further increase using 45 ° of gradients
The big water inlet area of drain pipe.Described drain pipe can select L-type drain pipe.
It is used as the further preferred technical scheme of steam low energy consumption long distance delivery device of the present invention:
Described built on stilts jet chimney is provided with aerial pipeline antivibration Thermal insulative pipe carrier, and described buried jet chimney is provided with buried
Pipeline antivibration Thermal insulative pipe carrier;Thermal insulative pipe carrier maximum spacing is calculated according to strength condition and rigidity (or amount of deflection) condition and determined, takes it
Smaller value.When amount of deflection is smaller, in conventional caliber scope and temperature range, conduit saddle spacing is controlled with rigidity condition.
When operating temperature is higher, and piping load it is larger when, small pipeline often determines conduit saddle spacing according to rigidity condition.Described is built on stilts
Pipeline antivibration Thermal insulative pipe carrier and ground pipeline antivibration Thermal insulative pipe carrier pour the hard shock resistant heat insulating built up including antivibration heat insulating casting material
Layer, heat-insulated soft felt into soft thermal insulation layer, and steel construction.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 conductivity factors are 0.14~0.18W/ (mK), and compression strength is 10~
15.8MPa, rupture strength is 4.5~6MPa.
Described aerial pipeline antivibration Thermal insulative pipe carrier include the first hard shock resistant heat insulating layer, the first soft thermal insulation layer, riser,
Floor, bottom plate, pipe clamp, the first lower tube clip and bolt fastener group on first;Pipe clamp and the first lower tube clip are logical on described first
Cross bolt fastener group to be fastened, form built on stilts jet chimney conduit saddle;The first hard is provided with built on stilts jet chimney conduit saddle
Shock resistant heat insulating layer, the first soft thermal insulation layer, the first described soft thermal insulation layer are close to built on stilts jet chimney, soft described first
Matter thermal insulation layer is externally provided with the first hard shock resistant heat insulating layer;The first described lower tube clip bottom is connected through riser and floor with bottom plate,
Bottom 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 is with standing
Plate and floor are by being welded and fixed, and described bottom plate is with riser, floor by being welded and fixed.
Described buried pipeline antivibration Thermal insulative pipe carrier includes the second hard shock resistant heat insulating layer, the second soft thermal insulation layer, second
Upper pipe clamp, the second lower tube clip and bolt fastener group;Pipe clamp outward bending is formed under connection otic placode, second on described second
Pipe clamp bends inwards to form lower connection otic placode, and upper and lower otic placode is fastened by bolts the formation of part group and is fastenedly connected, and forms buried steam
Pipeline conduit saddle;Provided with the second hard shock resistant heat insulating layer, the second soft thermal insulation layer in buried jet chimney conduit saddle, second it is soft every
Thermosphere is close to the supporting layer of buried jet chimney, and the second hard shock resistant heat insulating is wrapped with the second described soft thermal insulation layer
Layer.The outer steel pipe of buried jet chimney is arranged outside described buried pipeline antivibration Thermal insulative pipe carrier.Antivibration heat insulating casting material is poured
Build that the second hard shock resistant heat insulating layer top to be formed is thin, bottom is thick, top forms confined air and drawn last breath thermosphere, bottom rise load-bearing and every
The effect of heat.
Further, polytetrafluoroethylene (PTFE) friction pair is set on the outside of the second described lower tube clip, to reduce frictional force.
Described antivibration heat insulating casting material is by the A that gathers materials, aluminate cement B, alkali-free glass fibre C and expanded perlite D groups
Into the mass ratio of formula composition is:
1)A:B=(50-70):(30-40),
2)C:E=(1-4):(85-100);E represents AB mixtures,
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%, flyash 40-50%, vermiculite 5-10%.
The particle diameter of described lightweight micro mist is 0.5-3mm.Described lightweight micro mist is silicon powder, silicon carbide micro-powder, oxidation
One or more in aluminium micro mist, quartz micropowder.
The particle diameter of described aglite vermiculite is 1-5mm.
Described expanded perlite D particle diameter is 0.5-2.5mm.
Described alkali-free glass fibre C length is 0.5-4mm, a diameter of 0.3-1mm.
The described aluminate cement B trade mark is CA-50-G6.
Beneficial effects of the present invention:
By integrated use pipeline heat-insulating technology, the hydrophobic technology of pipeline and pipeline antivibration heat-insulating technique, ensureing pipeline
While system operation is safe, the heat loss in high-temperature steam course of conveying can be effectively reduced, source benefit, reduction heat is improved
User's production cost.Using steam low energy consumption long distance delivery technology disclosed by the invention, when jet chimney conveying load is being set
When counting more than the 30% of load, steam by 15~20 DEG C of every kilometer of temperature drop of conventional design be reduced to 3~5 DEG C of every kilometer of temperature drop with
Interior, steam fed distance is up to 30~40 kilometers.In addition, jet chimney is hydrophobic more safe efficient;Steam pipeline support
More save, while having the multi-functional such as antivibration and sound absorption.
Brief description of the drawings
Fig. 1 is the structural representation of built on stilts jet chimney of the present invention;
Fig. 2 is the sectional view of built on stilts jet chimney of the present invention;
Fig. 3 is the structural representation of buried jet chimney of the present invention;
Fig. 4 is the sectional view of buried jet chimney of the present invention;
Fig. 5 is the structural representation of steam trap connection of the present invention;
Fig. 6 is the A-A' diagrammatic cross-sections of 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 jet chimney body;The heat-insulation layer of 2- aerial pipelines first;The heat-insulation layer of 3- aerial pipelines second;4-
The heat-insulation layer of aerial pipeline the 3rd;The heat-insulation layer of 5- aerial pipelines the 4th;6- water-proof heat-insulation layers;7- protective layers;8- strappings;9a- framves
The reflecting layer of vacant duct first;The reflecting layer of 9b- aerial pipelines second;The reflecting layer of 9c- aerial pipelines the 3rd;The buried jet chimneys of 10-
Body;11- heats frictional layer;The heat-insulation layer of 12- buried pipelines first;The heat-insulation layer of 13- buried pipelines second;14- buried pipelines
Three heat-insulation layers;The heat-insulation layer of 15- buried pipelines the 4th;16- supporting layers;17- outer steel pipes;18- polyurea anti-corrosions layer;19a- underground pipes
The reflecting layer of road first;The reflecting layer of 19b- buried pipelines second;19c- buried pipeline third layer reflecting layer;19d- buried pipelines the 4th
Layer reflecting layer;20- collector pipes;21- drain pipes;22- circular heads;23- filter grid screens;The first hard of 24- shock resistant heat insulating layer;
The soft thermal insulation layers of 25- first;26- risers;27- floors;28- bottom plates;Pipe clamp on 29- first;The lower tube clips of 30- first;31- bolts
Fastener group;32- polytetrafluoroethylene (PTFE) friction pairs;Pipe clamp on 33- second;The lower tube clips of 34- second;35- the second hard shock resistant heat insulatings
Layer;The soft thermal insulation layers of 36- second.
Embodiment
In order to illustrate technical scheme and technical purpose, below in conjunction with the drawings and specific embodiments to the present invention
It is further introduced.
A kind of steam low energy consumption long distance delivery device, including built on stilts jet chimney and/or buried jet chimney.Can not
Situation about avoiding is as passed through when road, building, and steam low energy consumption long distance delivery device is from built on stilts jet chimney
With the combination of buried jet chimney, described built on stilts jet chimney and buried jet chimney are connected by elbow.
As depicted in figs. 1 and 2, described built on stilts jet chimney, including built on stilts jet chimney body 1,4 layer frame vacant ducts are protected
Warm layer, 3 layer frame vacant duct reflecting layer, water-proof heat-insulation layer 6 and protective layer 7;4 layer frame vacant duct heat-insulation layers are followed successively by frame outward from interior
The first heat-insulation layer of vacant duct 2, the second heat-insulation layer of aerial pipeline 3, the heat-insulation layer 4 of aerial pipeline the 3rd and the heat-insulation layer of aerial pipeline the 4th
5;3 layer frame vacant duct reflecting layer from it is interior be followed successively by outward the first reflecting layer of aerial pipeline 9a, aerial pipeline the second reflecting layer 9b and
The reflecting layer 9c of aerial pipeline the 3rd;Described aerial pipeline reflecting layer parcel alternate with aerial pipeline heat-insulation layer, be specially:It is built on stilts
The first heat-insulation layer of pipeline 2, the first reflecting layer of aerial pipeline 9a, the second heat-insulation layer of aerial pipeline 3, the reflecting layer of aerial pipeline second
9b, the heat-insulation layer 4 of aerial pipeline the 3rd, the reflecting layer 9c of aerial pipeline the 3rd, the heat-insulation layer 5 of aerial pipeline the 4th are wrapped in built on stilts successively
Outside jet chimney body 1, the fissure of displacement is overlapped between adjacent aerial pipeline heat-insulation layer;Described water-proof heat-insulation layer 6 is wrapped in built on stilts
Outside the heat-insulation layer 5 of pipeline the 4th;Described protective layer 7 is wrapped in outside water-proof heat-insulation layer 6.
The described heat-insulation layer of aerial pipeline first and the heat-insulation layer of aerial pipeline second is thickness 40mm hydrophobic type silicic acid
Aluminium needle punched blanket;The described heat-insulation layer of aerial pipeline the 3rd and the heat-insulation layer of aerial pipeline the 4th is thickness 60mm high temperature glass wool
Felt.Hydrophobic type alumina silicate needle punched blanket maximum operation (service) temperature is 1140 DEG C, and thermal conductivity factor is 0.044W/ (mK) at 70 DEG C;High temperature
Blanket of glass wool maximum operation (service) temperature is 450 DEG C, and thermal conductivity factor is 0.032W/ (mK) at 70 DEG C.
The material in the described reflecting layer of aerial pipeline first, the reflecting layer of aerial pipeline second and the reflecting layer of aerial pipeline the 3rd
It is the reflective aluminum of 10-20 μm of thickness.Described reflective aluminum is two-sided smooth, and the reflectivity of reflective aluminum is 0.97.
Described the first reflecting layer of aerial pipeline 9a, aerial pipeline the second reflecting layer 9b and the reflecting layer 9c of aerial pipeline the 3rd
It is mutually bonded with wrapping up the aerial pipeline heat-insulation layer in it by high-temperature plastic.
The described material therefor of water-proof heat-insulation layer 6 is thickness 6mm bubble aluminium.The described material therefor of protective layer 7 is thickness
0.5mm color steel.
As shown in Figure 3 and Figure 4, described buried jet chimney includes buried jet chimney body 10,1 layer of hot melt frictional layer
11st, 4 layers of buried pipeline heat-insulation layer, 4 layers of buried pipeline reflecting layer, supporting layer 16, outer steel pipe 17 and polyurea anti-corrosion layer 18;4 layers
Buried pipeline heat-insulation layer is followed successively by the first heat-insulation layer of buried pipeline 12, the second heat-insulation layer of buried pipeline 13, underground pipe outward from interior
The heat-insulation layer 14 of road the 3rd and the heat-insulation layer 15 of buried pipeline the 4th;4 layers of buried pipeline reflecting layer are followed successively by buried pipeline outward from interior
First reflecting layer 19a, the second reflecting layer of buried pipeline 19b, the reflecting layer 19c of buried pipeline the 3rd and the reflecting layer of buried pipeline the 4th
19d;Described hot melt frictional layer 11 is coated on the outer surface of buried jet chimney body 10;Described buried pipeline first is incubated
Layer 12 is wrapped in outside hot melt frictional layer 11, and the fissure of displacement is overlapped between adjacent buried pipeline heat-insulation layer;Described buried pipeline first
Reflecting layer is wrapped in outside the heat-insulation layer of buried pipeline first, the described alternate bag in buried pipeline reflecting layer and buried pipeline heat-insulation layer
Wrap up in, be specially:The first heat-insulation layer of buried pipeline 12, the first reflecting layer of buried pipeline 19a, the second heat-insulation layer of buried pipeline 13, bury
The second reflecting layer of ground pipeline 19b, the heat-insulation layer 14 of buried pipeline the 3rd, the reflecting layer 19c of buried pipeline the 3rd, buried pipeline the 4th are protected
Warm layer 15, the reflecting layer 19d of buried pipeline the 4th are wrapped in outside hot melt frictional layer 11 successively;Described supporting layer 16 is wrapped in frame
Outside the reflecting layer 19d of vacant duct the 4th;Described outer steel pipe 17 is wrapped in outside supporting layer 16;Described polyurea anti-corrosion layer 18
It is wrapped in outside outer steel pipe 17.
Described hot melt frictional layer uses 3PE anticorrosion structures, 100 μm of first layer epoxy powder >, second layer adhesive
170-250 μm, third layer polyethylene 2.5-3.7mm.Three kinds of materials combine together, and form excellent anti-with steel pipe strong bonded
Rotten layer.Described hot melt frictional layer can strengthen the cohesive force between steel pipe and heat-insulation layer, improve the stability of buried pipeline operation.
Described polyurea anti-corrosion layer is coated in formation outside outer steel pipe for polyurea anti-corrosion coating.
Described the first heat-insulation layer of buried pipeline 12 and the second heat-insulation layer of buried pipeline 13 is thickness 10mm titanium dioxide
Silicon (SiO2) aerogel blanket, the described heat-insulation layer 14 of buried pipeline the 3rd and the heat-insulation layer 15 of buried pipeline the 4th is thickness 50mm
High temp glass blanket.Aerosil felt maximum operation (service) temperature is 650 DEG C, and 25 DEG C of thermal conductivity factors are 0.018w/ (m
K).High temp glass blanket maximum operation (service) temperature is 450 DEG C, and 70 DEG C of thermal conductivity factors are 0.032W/ (mK).
Described the first reflecting layer of buried pipeline 19a, the second reflecting layer of buried pipeline 19b, the reflecting layer of buried pipeline the 3rd
19c and the reflecting layer 19d of buried pipeline the 4th are the reflective aluminum that thickness is 10-20 μm.Described reflective aluminum is two-sided smooth, reflection
The reflectivity of aluminium is 0.97.
Described the first reflecting layer of buried pipeline 19a, the second reflecting layer of buried pipeline 19b, the reflecting layer of buried pipeline the 3rd
The 19c and reflecting layer 19d of buried pipeline the 4th is mutually bonded with wrapping up the buried pipeline heat-insulation layer in it by high-temperature plastic.
The described material therefor of supporting layer 16 is hard polyaminoester.
It is as follows using the technical requirements of hard polyaminoester to be effectively moistureproof:
(1) unit weight is 50kg/m3;
(2) 25 DEG C of thermal conductivity factors are 0.02W/ (mk);
(3) rate of closed hole >=98%;
(3) oxygen index (OI) is 30;
(4) water absorption rate≤2%;
(5) temperature in use is no more than 130 DEG C;
(6) can foam-in-place cast;
It is positive using sacrificing for buried jet chimney of the length more than 50 meters to ensure that buried jet chimney does not corrode
Pole cathode protection method.Cathodic protection performs GB/T21448-2008《Buried steel pipeline cathode protection technology specification》.
Each heat-insulation layer ties up technique in built on stilts jet chimney and buried jet chimney:For DN≤200mm jet chimney
(making somebody a mere figurehead jet chimney body or buried jet chimney body), is tied up every 200mm with strapping 8;For DN <
600mm jet chimney, ties up spacing≤300mm;For DN >=600mm jet chimney, spacing≤400mm is tied up.Per pass
Strapping 8 need to be tied up individually, forbid to tie up on the two ends spiral of strapping 8.Heat-insulation layer by two layers or two layers of composition described above when,
Each heat-insulation layer need to be layered and tie up.Dynamics is appropriate when tying up, and is advisable with being adjacent between insulation material and steel pipe or insulation material.Bundle
Pricking can not be too tight, to prevent from reducing heat insulation effect;Tying up can not be too loose, to prevent insulation material from coming off, settling.
The breathing that pipeline can be produced due to temperature change, is compensated using whirl compensator.Conventional vapor pipe insulation
Shi Bixu reserves thermal expansion amount, and thermal expansion amount need not be reserved using rotation compensation mode, can reduce steam heat waste.
Before the end of steam low energy consumption long distance delivery device or minimum point, pressure-reducing valve and control valve, at temperature control device
Steam trap connection is set.Generally, jet chimney and buried jet chimney are maked somebody a mere figurehead one hydrophobic point peace is set every 30-50m
Fill steam trap connection.
As illustrated in figs. 5-7, described steam trap connection is by instrumentation tubes (built on stilts jet chimney or buried jet chimney), collector pipe
20th, drain pipe 21 and filter grid screen 23 etc. are constituted.Described collector pipe 20 is located at the bottom of instrumentation tubes, described collector pipe 20
The connected entrance of top and instrumentation tubes is provided with filter grid screen 23, and the bottom of collector pipe 20 is sealed using circular head 22, institute
State in the insertion collector pipe 20 of drain pipe 21.
Described steam trap connection includes collector pipe 20, filter grid screen 23 and drain pipe 21;Described collector pipe 20 is located at
The bottom of built on stilts jet chimney or buried jet chimney, the top of collector pipe 20 and built on stilts jet chimney or buried jet chimney
Filter grid screen 23 is provided with connected entrance, the bottom of collector pipe 20 is sealed using circular head 22;Described drain pipe 21 is inserted
In collector pipe 20, the water inlet of drain pipe 21 is located at the bottom of collector pipe 20, and delivery port is located at outside collector pipe 20;Described drain pipe
21 water inlet is 45 ° of angles.
Punching has some of width about 8mm filter bags on described filter grid screen 23.
The caliber d of described collector pipe 201With length L1Meet claimed below:When built on stilts jet chimney or buried steam pipe
During road caliber d≤100mm, d1=d, L1≥100mm;When built on stilts jet chimney or buried jet chimney caliber 100mm < d≤
During 200mm, d1=100mm, L1=150mm;When built on stilts jet chimney or buried jet chimney caliber d >=200mm, d1≥d/
2, L1≥d。
Described built on stilts jet chimney is provided with aerial pipeline antivibration Thermal insulative pipe carrier, and described buried jet chimney is provided with buried
Pipeline antivibration Thermal insulative pipe carrier;Thermal insulative pipe carrier maximum spacing is calculated according to strength condition and rigidity (or amount of deflection) condition and determined, takes it
Smaller value.When amount of deflection is smaller, in conventional caliber scope and temperature range, conduit saddle spacing is controlled with rigidity condition.
When operating temperature is higher, and piping load it is larger when, small pipeline often determines conduit saddle spacing according to rigidity condition.Antivibration instlated tubular
Tropsch technology requires as follows:
(1) as shown in figure 8, described aerial pipeline antivibration Thermal insulative pipe carrier includes the first hard shock resistant heat insulating layer 24, first
Soft thermal insulation layer 25, riser 26, floor 27, pipe clamp 29, the first lower tube clip 30 and bolt fastener group 31 on bottom plate 28, first;
The lower tube clip 30 of pipe clamp 29 and first is fastened by bolts part group 31 and fastened on described first, forms built on stilts vapor conduit tube
Hold in the palm for clamping built on stilts jet chimney;It is soft provided with the first hard shock resistant heat insulating layer 24, first in built on stilts jet chimney conduit saddle
Thermal insulation layer 25, the first described soft thermal insulation layer 25 is close to built on stilts jet chimney, in the first described soft peripheral hardware of thermal insulation layer 25
There is the first hard shock resistant heat insulating layer 24;The described bottom of the first lower tube clip 30 is connected through riser 26 and floor 27 with bottom plate 28, bottom
Plate 28 is placed on supporting plane.
The lower tube clip 30 of pipe clamp 29 and first is steel pipe clamp on described first;The first described lower tube clip 30 and riser 26
And floor 27 is by being welded and fixed, described bottom plate 28 is with riser 26, floor 27 by being welded and fixed.
(2) as shown in figure 9, described buried pipeline antivibration Thermal insulative pipe carrier, including the second hard shock resistant heat insulating layer 35, second
Pipe clamp 33, the second lower tube clip 34 and bolt fastener group 31 on soft thermal insulation layer 36, second;Pipe clamp 33 is outside on described second
Connection otic placode is bent to form, the second lower tube clip 34 bends inwards to form lower connection otic placode, and upper and lower otic placode is fastened by bolts part
Group 31 is formed and is fastenedly connected, and forming buried jet chimney conduit saddle is used to clamp buried jet chimney;In the second described lower tube clip
34 outsides set polytetrafluoroethylene (PTFE) friction pair 32, to reduce frictional force;Resist in buried jet chimney conduit saddle provided with the second hard
Thermal insulation layer 35, the second soft thermal insulation layer 36 are shaken, the second soft thermal insulation layer 36 is close to the supporting layer 16 of buried jet chimney, described
The second soft thermal insulation layer 36 be wrapped with the second hard shock resistant heat insulating layer 35;Outside described buried pipeline antivibration Thermal insulative pipe carrier
It is arranged the outer steel pipe 17 of buried jet chimney.Antivibration heat insulating casting material pours the second 35 top of hard shock resistant heat insulating layer to be formed
Thin, bottom is thick, and top forms confined air and drawn last breath thermosphere, and load-bearing is played and heat-insulated in bottom.
(3) conduit saddle model is made up of 7 parts, such as BRHAF-250-200-600.BR represents BR type Thermal insulative pipe carriers;H represents sliding
Dynamic conduit saddle;A represents temperature range≤540 DEG C;F represents tetrafluoroethene friction pair (not marked without friction pair);250 represent pipeline
Nominal diameter;200 represent conduit saddle clear height;600 represent conduit saddle floor length.
(4) the Thermal insulative pipe carrier compressive resistance that existing market is generally used is 4MPa, and 300 DEG C of thermal conductivity factors are 0.3W/ (m
K).The mechanics of antivibration Thermal insulative pipe carrier of the present invention, heat-insulating property are increased substantially, and antivibration heat-proof quality is notable:The heat-insulated cast of antivibration
Material pour build up first and two hard shock resistant heat insulating layer can bear thermal conductivity factor under 1000 DEG C of high temperature, 350 DEG C of mean temperatures≤
0.188W/(m·K).Antivibration heat insulating casting material pour build up first and two hard shock resistant heat insulating layer compression strength be 10~
15.8MPa, rupture strength be 4.5~6MPa, 110 DEG C baking 5 hours after bulk density be 1.1~1.4g/cm3, have simultaneously
There are the multiple efficacies such as antivibration, sound absorption, heat-insulated, heat-insulated and antivibration effect is substantially increased relative to traditional Thermal insulative pipe carrier.
Described antivibration heat insulating casting material is by the A that gathers materials, aluminate cement B, alkali-free glass fibre C and expanded perlite D groups
Into the mass ratio of formula composition is:
1)A:B=(50-70):(30-40),
2)C:E=(1-4):(85-100);E represents AB mixtures,
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%, flyash 40-50%, vermiculite 5-10%.
The particle diameter of described lightweight micro mist is 0.5-3mm.Described lightweight micro mist is silicon powder, silicon carbide micro-powder, oxidation
One or more in aluminium micro mist, quartz micropowder.
The particle diameter of described aglite vermiculite is 1-5mm.
Described expanded perlite D particle diameter is 0.5-2.5mm.
Described alkali-free glass fibre C length is 0.5-4mm, a diameter of 0.3-1mm.
The described aluminate cement B trade mark is CA-50-G6.
(5) it should ensure that heat-insulated soft felt is intact when conduit saddle is installed, heat-insulated soft felt should keep away from moisture in transit, otherwise influence
The tearing strength and heat insulation effect of heat-insulated soft felt.
(6) it is guarantee conduit saddle and pipeline global displacement, it is to avoid the relative slip between conduit saddle and pipeline, bolt fastener group
Pre-fastening moment >=30Nm.
(7) different according to caliber, medium temperature, the height of conduit saddle, floor length, heat insulating casting material thickness are differed.
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, ensureing pipeline
While system operation is safe, the heat loss in high-temperature steam course of conveying can be effectively reduced, source benefit, reduction heat is improved
User's production cost.In addition, jet chimney is hydrophobic more safe efficient;Steam pipeline support is more saved, and is had simultaneously
The multi-functional such as antivibration and sound absorption.In Practical Project process of deployment, about 32 kilometers of jet chimney single line total length, pressure of steam supply
2MPa, 285 DEG C of temperature, 30~35t/h of flow.Using steam low energy consumption long distance delivery technology disclosed by the invention, 20 kilometers
Outer terminal temperature difference pressure reaches 1.44MPa, and temperature is up to 215 DEG C, and every kilometer of temperature drop is about 3.6 DEG C.
Above content describes general principle, principal character and its advantage of the present invention.Industry technical staff should
Solution, the present invention is not limited to the above embodiments, it is all without departing from the spirit and scope of the present invention, the present invention it is also each
Plant and improve and change, such modifications and variations are within the scope of the present invention.