CN102950694A - Polyurethane foaming device, its application and using method - Google Patents
Polyurethane foaming device, its application and using method Download PDFInfo
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- CN102950694A CN102950694A CN2011102349507A CN201110234950A CN102950694A CN 102950694 A CN102950694 A CN 102950694A CN 2011102349507 A CN2011102349507 A CN 2011102349507A CN 201110234950 A CN201110234950 A CN 201110234950A CN 102950694 A CN102950694 A CN 102950694A
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Abstract
The invention relates to a polyurethane foaming device and its application. The polyurethane foaming device comprises: a mixing output apparatus and a distributary pouring apparatus. The mixing output apparatus is used for mixing polyurethane reaction components into a polyurethane reaction system and outputs the polyurethane reaction system. The shunt pouring apparatus comprises a main pipe and at least two branch pipes. The main pipe is in connection with the mixing output apparatus so as to convey the polyurethane reaction system to the branch pipes, and the branch pipes are communicated with the main pipe to achieve distributary pouring of the polyurethane reaction system. The invention also relates to application of the polyurethane foaming device in manufacturing a polyurethane ballast bed and a preparation method of the polyurethane ballast bed.
Description
Technical field
The present invention relates to a kind of polyurethane foaming device, and the purposes in preparation polyurethane ballast aggregate railway roadbed, and the method for preparing polyurethane ballast aggregate railway roadbed.
Background technology
Railway ballast often refers to the ballastway that lay sleeper below, roadbed top, and it is the basis of track-frame, and Main Function is the supporting sleeper, the huge rolling stock load that rail and sleeper are transmitted, be distributed to equably on the subgrade bed face, reduce subgrade deformation, guarantee traffic safety.There is the railway ballast of ballastway to be also referred to as the ballast aggregate railway roadbed.In addition, the ballast aggregate railway roadbed also has the effects such as bumper and absorbing shock.Ballast aggregate railway roadbed versatility is good especially, and construction cost is very low, so the scope of application is very wide.
At a high speed and heavy haul train when passing through, substantial load will be transformed into enormous impact to the ballast aggregate railway roadbed by rail and sleeper.For preventing that the ballast aggregate building stones in the ballast aggregate railway roadbed from bumping, being shifted and broken the desertification, can be to cast polyurethane in the ballast aggregate building stones, polyurethane infiltrates building stones gap post-foaming, wrap up building stones and reinforce railway roadbed, thereby slow down the distortion of ballast aggregate railway roadbed, functional deterioration, prolong the maintenance cycle, improve service life.
The construction of polyurethane ballast aggregate railway roadbed is to be directly exposed under the natural conditions, therefore no matter be a newly-built polyurethane ballast aggregate railway roadbed, or reinforce an existing ballast aggregate railway roadbed with polyurethane foam material, all need to overcome the adverse effect factors such as temperature Change, sleet effect, geological conditions.Particularly, existing ballast aggregate railway roadbed reinforced with polyurethane foam material can only utilize of short duration withdrawal of train " Window time " to carry out, so the efficiency of construction of polyurethane ballast aggregate railway roadbed just seems very important.
US 2007172590A discloses a kind of method of building the ballast aggregate railway roadbed, and this ballast aggregate railway roadbed forms with ballast aggregate building stones and polyurethane foam, described polyurethane foam by isocyanates and can and the reactant mixture of the compound that reacts of isocyanates make.EP1619305 discloses a kind of method that expanded material improves the railway roadbed bearing capacity of introducing in the ballast aggregate gap of ballast aggregate railway roadbed, described expanded material solidifies after introducing.Described expanded material can be multi-component polymer such as polyurethane foam.The method is the polyurethane reaction system to be applied in the slit of track sleeper and polyurethane railway roadbed by pouring type to realize.
The device that polyurethane foam adopts generally includes two head tanks, deposits respectively required polyalcohol component and the isocyanate component of preparation polyurethane foam.Two kinds of raw material components abundant mixed-shaped generating polyurethane reaction system in mixing head, and output and pouring into a mould under certain pressure.
When preparation polyurethane ballast aggregate railway roadbed, the polyurethane reaction system can be cast in the zone that the ballast aggregate railway roadbed bears larger load, for example near the zone of sleeper, thereby optionally strengthens this part zone.When cast, for improving efficiency of construction, can improve the polyurethane reaction system discharge-amount at the sprue gate on the mixing head, but can not be too large, because crossing bottom or the quarrel shoulder bottom that senior general causes the polyurethane reaction system to be lost to the ballast aggregate railway roadbed, discharge-amount just begins to foam, thereby make the polyurethane foam too much ballast gap of filling and waste material, but also easily cause the polyurethane reaction system to be piled up.Therefore, to prepare efficiency of construction low for present polyurethane ballast aggregate railway roadbed.
Therefore, need the efficiently polyurethane foaming device of preparation polyurethane ballast aggregate railway roadbed, take full advantage of limited good weather and of short duration withdrawal of train " skylight phase " prepares polyurethane ballast aggregate railway roadbed rapidly with this.
Summary of the invention
For this reason, one of the object of the invention provides a kind of polyurethane foaming device of energy Quick pouring polyurethane reaction system.
According to an embodiment of the invention, the invention provides a kind of polyurethane foaming device, described polyurethane foaming device comprises:
One is mixed output device, and be used for the polyurethane reaction composition is mixed into the polyurethane reaction system, and export described polyurethane reaction system, and
A runner boxing device, described runner boxing device comprises a supervisor and at least two arms, described supervisor is connected that with described mixing output device described polyurethane reaction system is sent to described arm, described arm is communicated with described supervisor, with the described polyurethane reaction system of runner boxing.
In one embodiment of the present invention, the supervisor of runner boxing device uses dismountable connected mode to be connected with the mixing output device.Preferably, the supervisor of runner boxing device use be threaded, mode that socket joint connection, clamp connection or self-locking connect is connected with the mixing output device.More preferably, the supervisor of runner boxing device uses the self-locking connected mode to be connected with the mixing output device.
Another preferred embodiment in, the arm of runner boxing device of the present invention is straight tube, right-angle elbow pipe structure or half N-shaped structure.Preferably, each arm is radial even distribution take supervisor's center line as axle.More preferably, the distance between each arm port of export is 23-31 centimetre.
In another embodiment, the port of export in the arm of runner boxing device connects at least two again isocons.Preferably, the distance between the port of export of described again isocon is 23-31 centimetre.Isocon can use the structure identical with arm again.
In going back an embodiment, also be provided with an air inlet pipe on the described supervisor, be used for passing into the foam that gases at high pressure form with polyurethane reaction system residual in the clear described runner boxing device or the foaming of polyurethane reaction system to described runner boxing device.
One of the object of the invention is to provide with the purposes of described polyurethane foaming device for the preparation of polyurethane ballast aggregate railway roadbed.
One of the object of the invention is to provide a kind of polyurethane ballast aggregate road bed process for preparing, and the method comprises:
Obtain one section railway roadbed that is equipped with ballast aggregate; With
Use above-mentioned polyurethane foaming device that the polyurethane reaction system is poured in the ballast aggregate and foam, form polyurethane ballast aggregate railway roadbed with ballast aggregate.
Preferably, each arm of polyurethane foaming device is placed on respectively the sleeper both sides, so that the polyurethane foam system is poured in the ballast aggregate in the sleeper both sides by each arm; Also preferably each arm of polyurethane foaming device is placed on the homonymy of described sleeper, so that the polyurethane foam system is poured in the ballast aggregate at the sleeper homonymy by each arm.
A present invention also purpose is to provide a kind of method for preparing polyurethane ballast aggregate railway roadbed, and the method comprises:
Obtain one section railway roadbed that is equipped with ballast aggregate; With
Use the above-mentioned polyurethane foaming device that is provided with air inlet pipe supervisor that the polyurethane reaction system is poured in the ballast aggregate and foam, form polyurethane ballast aggregate railway roadbed with ballast aggregate, described air inlet pipe high-pressure gas pressure is preferably 2-20bar, and gas flow is 5-50Nm
3/ hour, more preferably, described high-pressure gas pressure is 8-15bar, gas flow is 30-50Nm
3/ hour.
Polyurethane foaming device provided by the present invention can be to a plurality of positions while cast polyurethane reaction systems on the ballast aggregate railway roadbed, avoided using single sprue gate to carry out too fast cast and the accumulation of the polyurethane reaction system that causes, also can be according to the fluence of watering of polyurethane foam time control polyurethane reaction system, rationally fill the ballast aggregate space, thereby improved the efficiency of construction of cast efficient and polyurethane ballast aggregate railway roadbed.
Description of drawings
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, other features, objects and advantages of the present invention will become apparent:
The sketch of the polyurethane foaming device 100 that provides according to one embodiment of present invention is provided Fig. 1;
The profile of the runner boxing device 200 that provides according to one embodiment of present invention is provided Fig. 2;
The profile of the runner boxing device 300 that provides according to one embodiment of present invention is provided Fig. 3;
The profile of the runner boxing device 400 that provides according to one embodiment of present invention is provided Fig. 4;
The profile of the runner boxing device 500 that provides according to one embodiment of present invention is provided Fig. 5;
The profile of the runner boxing device 600 that provides according to one embodiment of present invention is provided Fig. 6; With
Fig. 7 is the profile of runner boxing device 700 that air inlet pipe is provided on the supervisor who provides according to one embodiment of present invention.
The specific embodiment
The present invention is by introducing the runner boxing device with at least two arms in polyurethane foaming device, to a plurality of positions while cast polyurethane reaction systems on the ballast aggregate railway roadbed, improved cast efficient, avoided simultaneously using one-pipe to carry out too fast cast and the accumulation of the polyurethane reaction system that causes.
The polyurethane reaction system
Polyurethane reaction system of the present invention comprises one pack system, bi-component or multi-component polyurethane reaction system, preferably uses the polyurethane reaction system of bi-component.Can be used for preferred polyurethane reaction system of the present invention comprises:
(a) one or more polyisocyanates, described polyisocyanates can be used general formula R (NCO)
nExpression, wherein R represents to contain the aliphatic alkyl of 2-18 carbon atom or contains the aryl of 6-15 carbon atom or contain 8-15 carbon atom aryl aliphatic hydrocarbyl, n=2-4;
(b) one or more polyalcohols, described polyalcohol is selected from: PEPA, PPG and/or amine terminated polyether polyalcohol, polycarbonate polyol, PolyTHF polyalcohol, polycaprolactone polyol, polymer polyatomic alcohol or their mixing, the molecular weight of described polyalcohol is greater than 200, and degree of functionality is 2-6;
(c) one or more chain extenders; With
(d) one or more blowing agents of 0.3-4.5 % by weight, in the weight of b and c by 100 % by weight;
(e) one or more catalyst of 0.001-10%, in the weight of b and c by 100 % by weight.
The two component polyurethane reaction system comprises take isocyanates as main A component and take polyalcohol, amine terminated polyether or their mixtures as main B component.
The A component comprises one or more polyisocyanates.Described polyisocyanates can be used general formula R (NCO)
nThe expression, wherein R represent to contain 2-18 carbon atom aliphatic alkyl, contain 6-15 carbon atom aryl, contain 8-15 carbon atom aryl aliphatic hydrocarbyl, n=2-4.
Polyisocyanates is preferred but be not limited to, the vinyl vulcabond, tetramethylene 1, the 4-vulcabond, hexamethylene diisocyanate (HDI), dodecyl 1, the 2-vulcabond, cyclobutane-1, the 3-vulcabond, cyclohexane-1, the 3-vulcabond, cyclohexane-1, the 4-vulcabond, 1-NCO-3,3,5-trimethyl-5-NCO hexahydrotoluene, hexahydrotoluene-2, the 4-vulcabond, hexahydrobenzene base-1, the 3-vulcabond, hexahydrobenzene base-1, the 4-vulcabond, perhydro--carotene diphenyl-methane 2, the 4-vulcabond, perhydro--carotene diphenyl-methane 4, the 4-vulcabond, phenylene 1, the 3-vulcabond, phenylene 1, the 4-vulcabond, durene 1, the 4-vulcabond, stibene stibene 1, the 4-vulcabond, 3,3-dimethyl 4, the 4-diphenyl diisocyanate, Toluene-2,4-diisocyanate, 4-vulcabond (TDI), Toluene-2,4-diisocyanate, 6-vulcabond (TDI), diphenyl-methane-2,4 '-vulcabond (MDI), diphenyl-methane-2,2 '-vulcabond (MDI), diphenyl-methane-4,4 '-vulcabond (MDI), naphthylene-1,5-vulcabond (NDI), their isomers, mixture between they and they the isomers.
Polyisocyanates can also comprise the isocyanates with carbonization diamines, allophanate or isocyanate-modified gained, preferred but be not limited to the '-diphenylmethane diisocyanate of '-diphenylmethane diisocyanate, the modification of carbonization diamines, their isomers, the mixture between they and they the isomers.
Polyisocyanates can also be selected isocyanate prepolymer, and isocyanate prepolymer and preparation method thereof is well known in the art.The NCO content of described prepolymer, preferred but be not limited to the 8-30 % by weight, preferred 10-28 % by weight.
The B component comprises PEPA, PPG and/or amine terminated polyether polyalcohol, polycarbonate polyol, PolyTHF polyalcohol, polycaprolactone polyol, polymer polyatomic alcohol or their mixture.In addition, the polyurethane reaction system can further include chain extender, filler and blowing agent.
The molecular weight of PPG is 200-8000, preferred 500-6000, and average functionality is 2-6, preferred 2-4.PPG, preferred but be not limited to PPOX polyalcohol, PEO polyalcohol, PolyTHF polyalcohol and their mixture.
Amine terminated polyether, preferred but be not limited to PPG with uncle's ammonia and parahelium end-blocking, or their mixture, the degree of functionality of amine terminated polyether is 2-6, preferred 2-3.The molecular weight of amine terminated polyether is preferably greater than and equals 1000.The preparation method of described amine terminated polyether is well known in the art.
PEPA is made by dicarboxylic acids or dicarboxylic acid anhydride and polyol reaction.Dicarboxylic acids, preferred but be not limited to, the aliphatic carboxylic acid that contains 2-12 carbon atom, for example: succinic acid, malonic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, decanedioic acid, dodecyl carboxylic acid, maleic acid, fumaric acid, phthalic acid, isophathalic acid, terephthalic acids, their mixture.Dibasic acid anhydride, preferred but be not limited to phthalic anhydride, tetrachlorophthalic anhydride, maleic anhydride, their mixture.Polyalcohol, preferred but be not limited to, ethylene glycol, diethylene glycol (DEG), 1,2-propane diols, 1,3-PD, DPG, 1,3-methyl propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexylene glycol, neopentyl glycol, 1,10-decanediol, glycerine, trimethylolpropane, their mixture.PEPA also comprises the PEPA by the lactone preparation.By the PEPA of lactone preparation, preferred but be not limited to 6-caprolactone.
PPG can by known technical process preparation, for example, in the presence of catalyst, be made by alkylene oxide and initiator reaction.Catalyst, preferred but be not limited to, alkaline hydrated oxide, alkaline alkoxide, Antimony pentachloride, boron fluoride close ether, their mixture.Alkylene oxide, preferred but be not limited to oxolane, oxirane, 1,2-expoxy propane, 1,2-epoxy butane, 2,3-epoxy butane, styrene oxide, their mixture.Initiator, preferred but be not limited to, polyol, for example: water, ethylene glycol, 1,2-PD, 1,3-PD, diethylene glycol (DEG), trimethylolpropane, their mixture.
Polycarbonate polyol, preferred but be not limited to PCDL.PCDL can be made by glycol and dialkyl or diaryl carbonate or phosgene reaction.Glycol, preferred but be not limited to 1,2-PD, 1,3-PD, BDO, 1,5-PD, 1,6-hexylene glycol, diethylene glycol (DEG), metaformaldehyde glycol, their mixture.Dialkyl or diaryl carbonate, preferred but be not limited to diphenyl carbonate.
Polymer polyatomic alcohol is that solid strengthens the stabilising dispersions that particle forms in polyalcohol liquid.Any polymer as known in the art (or dispersion) polyalcohol all can be included in the polyol component of the present invention.Include but not limited to SAN polymer polyatomic alcohol, PHD polymer polyatomic alcohol, PIPA polymer polyatomic alcohol.The SAN polymer polyatomic alcohol refers to make in basic polyalcohol situ polymerization by acrylonitrile and cinnamic mixture; The PHD polymer polyatomic alcohol prepares in basic polyalcohol situ polymerisation by isocyanate mixture and diamines, and described PIPA polymer polyatomic alcohol prepares in basic polyalcohol situ polymerization by isocyanate mixture and glycol and/or glycol-amine.
Chain extender, usually select molecular weight less than 800 contain the reactive hydrogen atom compound, preferred molecular weight be 18-400 contain the reactive hydrogen atom compound.Contain the reactive hydrogen atom compound, preferred but be not limited to, alkyl diol, two alkylene dihydroxylic alcohols, poly-alkyl polyols, their mixture, for example: ethylene glycol, BDO, 1,6-hexylene glycol, 1,7-heptandiol, 1,8-ethohexadiol, 1,9-nonanediol, 1,10-decanediol, diethylene glycol (DEG), DPG, polyoxyalkylene glycol, their mixture.The described reactive hydrogen atom compound that contains, also can comprise other grafting or undersaturated alkyl diol, their mixture, for example: 1,2-propane diols, 2-methyl isophthalic acid, ammediol, 2,2-dimethyl-1, ammediol, 2-butyl-2-ethyl-1, ammediol, 2-butene-1,4-glycol, 2-butine-1,4-glycol, alkanolamine, N-alkyl two alkanolamines such as monoethanolamine, 2-Propanolamine, 3-amino-2,2-dimethyl propyl alcohol, N methyldiethanol amine, N-ethyldiethanolamine, their mixture.The described reactive hydrogen atom compound that contains, can also comprise aliphatic amine, aromatic amine, their mixture, for example: 1,2-ethylenediamine, 1,3-propane diamine, 1,4-butanediamine, 1,6-hexamethylene diamine, IPD, 1,4-cyclohexanediamine, N, N '-diethyl-phenyl diamines, 2,4-diaminotoluene, 2,6-diaminotoluene, their mixture.
Filler can be selected various inorganic fillers or organic filler.Inorganic filler is preferred but be not limited to silicate mineral, metal oxide, slaine, inorganic pigment, natural and synthetic fibrous mineral, nano material, their mixture, and its non-limiting example is calcium silicates, calcium carbonate, aerosil, nano zine oxide, barite, zinc sulphide, glass granules, wollastonite.Organic filler is preferred but be not limited to particulate, the cork of crystallization paraffin, polymer polyatomic alcohol, organic origin.Use can be used separately or mix to inorganic filler or organic filler.Filler can play the effects such as the intensity that strengthens polyurethane ballast layer, anti-flammability.The consumption of described filler is the 0-45 % by weight, 0-25 % by weight particularly preferably, 0-20 % by weight most preferably, in the weight of B by 100 % by weight.
Blowing agent can be selected various physical blowing agents or CBA, and is preferred but be not limited to water, halogenated hydrocarbons, hydrocarbon compound.Halogenated hydrocarbons, preferred but be not limited to chlorodifluoronmethane, dichloro one fluomethane, dichloro fluomethane, trichlorine fluomethane, their mixture.Hydrocarbon compound, preferred but be not limited to butane, pentane, pentamethylene, hexane, cyclohexane, heptane, their mixture.Blowing agent, particularly preferably, water.The consumption of blowing agent depends on the density of ballast layer of the filling polyurethane of required preparation, preferred but be not limited to the 0.3-4.5 % by weight, 0.5-3.6 % by weight particularly preferably, the spy is the 0.6-3.2 % by weight most preferably, with the weight of all polyalcohols in the polyurethane reaction system (both comprised the polyalcohol as reactive component, and also comprised the polyalcohol of using as in the polyalcohol of chain extender and other components) by 100 % by weight.
The B component can also comprise catalyst, surfactant and fire retardant etc.
Catalyst, preferred but be not limited to amines catalyst, organo-metallic catalyst, their mixture.Amines catalyst, preferred but be not limited to triethylamine, tri-butylamine, triethylenediamine, N-ethylmorpholine, N, N, N ', N '-tetramethyl-ethylenediamine, pentamethyl diethylidene-triamine, N, methylphenylamine, DMA, their mixture.Organo-metallic catalyst, preferred but be not limited to the organic tin compound, for example: tin acetate (II), tin octoate (II), thylhexoic acid tin, tin laurate, Dibutyltin oxide, dibutyl tin dichloride, dibutyl tin acetate, dibutyl maleic acid tin, dioctyl oxalic acid tin, their mixture.The consumption of catalyst is the 0.001-10 % by weight of the consumption of B component.
Surfactant can use to promote all even compounds that optionally is fit to regulate the foam microcellular structure of raw material.Preferred but be not limited to the ethylene oxide derivant of siloxanes.The consumption of described surfactant is the 0.01-5 % by weight of B amounts of components.
Fire retardant can be that organic fire-retardant also can be inorganic combustion inhibitor, organic fire-retardant, preferred but be not limited to three (2-chloroethyl) phosphates (TCEP), tricresyl phosphate (2-chloropropyl) ester TCPP, trichlorine propyl phosphate (TDCPP), dimethyl methyl phosphonate (DMMP), triphenyl phosphate, orthophosphoric acid melamine (MPP) etc. or their mixing; Inorganic combustion inhibitor, preferred but be not limited to algeldrate, hydronium(ion) oxidation magnesium, MAP, Diammonium phosphate (DAP), ammonium chloride, boric acid, hydration zinc borate (FB) etc. or their mixing.
In the polyurethane reaction system, the mol ratio of NCO group and OH group, preferred but be not limited to 70-130: 100,90-115 particularly preferably: 100, OH group, in whole OH contained in polyalcohol, chain extender, filler, the blowing agent in the B component.
The density of the polyurethane foam in the polyurethane ballast aggregate railway roadbed that makes according to method provided by the invention is 0.02-0.5g/cm
3, preferred 0.05-0.4g/cm
3, 0.1-0.3g/cm particularly preferably
3Hardness is 5-60Asker C, preferred 10-40Asker C.The elongation at break of the polyurethane foam in the polyurethane polyurethane ballast aggregate railway roadbed is 120-400%.
Polyurethane foaming device
Polyurethane foaming device of the present invention comprises mixing output device and runner boxing device.Wherein, described mixing output device can use the used mixing arrangement of known polyurethane foaming equipment.These equipment include but not limited to the equipment of one pack system, equipment or the multi-component equipment of bi-component, the preferred equipment that uses bi-component, the example include but not limited to the conventional high pressure casting machine of HK650 type, HK1250 type, HK2500 type available from Hennecke company.
Polyurethane foaming equipment comprises the equipment of fixed volume ratio or the equipment of on-fixed volume ratio.When using the equipment of fixed volume ratio, take isocyanates as main A component and the volume ratio take polyalcohol as main B component preferred but be not limited to 3: 1,2: 1,1: 1,1: 2,1: 3 or ratio that other is fixing.When using the equipment of on-fixed volume ratio, change between 10: 100 to 100: 10 take isocyanates as main A component with take the volume ratio of polyalcohol as main B component.
The runner boxing device can be connected output device and directly connect.Comprise an efferent duct if mix output device, the runner boxing device also can pass through this efferent duct and be connected the output device connection so.
If mixing the efferent duct of output device is the straight tube-like structure, in order to be connected with this efferent duct easily, the supervisor of runner boxing device can be the straight tube-like structure.This supervisor's a end is connected with the mixing output device, and the other end is connected with two or more arms.Any connected mode that supervisor and the connected mode of mixing arrangement can be known in the art, as long as it can be delivered to the polyurethane reaction system each arm, for example supervisor can be connected with the mixing output device by the mode of welding.
In the present invention, supervisor preferably is connected with the mixing output device by dismountable connected mode, so can change easily the runner boxing device, can prevent from stopping up such as polyurethane and the situation such as cause to pour into a mould behind the mouth of pipe and occur or use the runner boxing device that more is fit to on-the-spot cast polyurethane requirement instead.Dismountable connected mode refers to can in the situation of the physical arrangement that does not change two interconnective connectors, with the connected mode that connector separates, for example be threaded and can separate by relative rotary connector when needed.
Dismountable connected mode includes but not limited to be threaded, socket joint connection, clamp connection are connected with the self-locking connection.
As herein described being threaded refers to screw element (or threaded portion of connected piece) removably connecting that connected piece joins together.Threaded connector commonly used has bolt, double-screw bolt, screw and holding screw etc.
Socket joint as herein described connects mouthful insertion of taking out that refers to pipe or pipe fitting one end to be wanted in the bellmouth of fitting, and uses the connected mode of packing material (for example flax silk or asbestos cord) sealing in annular space.
Clamp connection as herein described refers to sealing ring of two ends cassette joint therebetween, then puts the connected mode that tube bank is locked.
Self-locking connection as herein described refers to need not to use other securing member, adhesive or assembly just can realize the connected mode of the locking of two connectors, the example includes but not limited to y-bend fast self-locking joint, trident fast self-locking joint, Simply-connected expansion buckle type auto-lock quick-acting joint, duplex expansion buckle type self locking quick connector, metal push-pull self-locking connection etc.
Because the installation and removal of self-locking connected mode are all fast and convenient, so the supervisor of runner boxing device preferably uses the self-locking connected mode to be connected with the mixing output device.
Fig. 1 is the sketch of polyurethane foaming device 100 according to an embodiment of the invention.As shown in Figure 1, polyurethane foaming device 100 of the present invention comprises mixing output device 110 and runner boxing device 120.Foam device 100 also comprises head tank 130 and 140, is respectively applied to isocyanate component A and polyol component B.Foam device 100 also comprise respectively with head tank 130 with are connected pump 150 and the pump 160 that is connected.
Component A and B component are pumped out under the effect of pump 150 and pump 160 respectively, and enter mixing output device 110 through corresponding pipeline.Under High Pressure, component A and B component be abundant mixed-shaped generating polyurethane reaction system in mixing output device 110, then 115 outputs of the efferent duct through mixing output device 110.
Should be noted in the discussion above that in Fig. 1, isocyanate component A and polyol component B also can premixeds in a head tank, and then enter to mix in the output device 110 and fully mix, and namely two head tanks among Fig. 1 can replace with a head tank.In addition, in some cases, the polyurethane foaming device 110 of Fig. 1 also can not comprise pump 150 and 160, and the polyurethane reaction component can flow into by effects such as gravity mixes mixed-shaped generating polyurethane reaction system in the output device 110.
Runner boxing device 120 is connected with efferent duct 115, is used for accepting from the polyurethane reaction system of efferent duct 115 outputs and with its runner boxing.Do not comprise efferent duct 115 if mix output device 110, runner boxing device 120 can directly be connected with mixing output device 110 so.
Runner boxing device 120 will be divided into several tributaries from the polyurethane reaction system of mixing output device 110 by its arm, therefore when the output quantity that keeps each arm sprue gate is certain, can correspondingly improve the output quantity of the polyurethane reaction system of mixing output device 110, and can pour into a mould simultaneously a plurality of positions of ballast aggregate railway roadbed, both improve cast efficient, and also can not cause the accumulation of polyurethane reaction system.
For example, when runner boxing device 120 has 2 arms, the output quantity of mixing the polyurethane reaction system at output device sprue gate can be increased to 2 times of former output quantity, so will pour into a mould efficient and be doubled.It should be understood that above example only is in order to illustrate, should not to be understood as limitation of the present invention.
The profile of the runner boxing device 200 that provides according to one embodiment of the present invention has been provided Fig. 2.Runner boxing device 200 comprises 210 and two arms 220 of supervisor, 230.In Fig. 2, two arms 220 have identical caliber with 230, and all are half n shape structure, evenly distribute to be responsible for 210 center line.In the present invention, each arm of runner boxing device can have different shapes and caliber, preferably is of similar shape and caliber.
Because the top of the trapezoidal cross-section of common railroad tie is about 22 centimetres, the base is about 32 centimetres, so the distance between the port of export of two arms 220 and 230 is preferably between 23-31 centimetre, so when cast polyurethane, described runner boxing device can straddle on the sleeper by each arm, from the both sides cast polyurethane reaction system of sleeper, thereby the sprue gate that effectively prevents arm when cast swings.
The profile of the runner boxing device 300 that provides according to an embodiment of the invention has been provided Fig. 3.Runner boxing device 300 comprises 310 and two arms 320 of supervisor, 330.Two arms 320 have identical caliber with 330, and all are the Straight structure, evenly distribute to be responsible for 310 center line.Preferably, distance between two arms 320 and 330 the port of export is preferably between 23-31 centimetre, so when cast polyurethane, described runner boxing device can straddle on the sleeper by each arm, from the both sides cast polyurethane reaction system of sleeper, thereby the sprue gate that effectively prevents arm when cast swings.
The profile of the runner boxing device 400 of a polyurethane foaming device that provides according to an embodiment of the invention has been provided Fig. 4.Runner boxing device 400 comprises 410 and three arms 420 of supervisor, 430,440.Three arms 420,430 and 440 have identical caliber, and are the Straight structure, radially distribute to be responsible for 410 center line.Preferably, distance between three arms 420,430 and 440 the port of export is preferably between 23-31 centimetre, so when cast polyurethane, described runner boxing device can straddle on the sleeper by each arm, from the both sides cast polyurethane reaction system of sleeper, thereby the sprue gate that effectively prevents arm when cast swings.
Fig. 5 has shown the profile that the runner boxing device 500 of a polyurethane foaming device is provided according to an embodiment of the invention.Runner boxing device 500 comprises 510 and four arms 520 of supervisor, 530,540,550.Four arms 520,530,540 and 550 have identical caliber, and are the Straight structure, radially distribute to be responsible for 510 center line.Preferably, distance between four arms 520,530,540 and 550 the port of export is preferably between 23-31 centimetre, so when cast polyurethane, described runner boxing device can straddle on the sleeper by each arm, from the both sides cast polyurethane reaction system of sleeper, thereby the sprue gate that effectively prevents arm when cast swings.
The profile of the runner boxing device 600 of a polyurethane foaming device that provides according to an embodiment of the invention has been provided Fig. 6.Runner boxing device 600 comprises the arm 620,630 of being responsible for 610 and two rectangular bend pipe structures.On two arms 620 and 630 of runner boxing device 600, respectively be connected with two again isocons, namely connected again isocon 624 and 628 at arm 620, connected again isocon 634 and 638 at arm 630.Each again isocon can take the structure identical with arm, also can take the structure different from arm.Preferably, the plane parallel at the plane at isocon 624 and 628 places and isocon 634 again and 638 places again, and vertical with the plane at 630 places with arm 620.Preferably, the distance between isocon 624 and 624 ports of export again, and the distance between isocon 634 and 638 ports of export is 23-31 centimetre again, said runner boxing device can straddle on the sleeper by isocon again, in sleeper both sides cast polyurethane reaction system, effectively prevent from when cast, swinging, also can pour into a mould simultaneously a plurality of zones simultaneously.
Fig. 7 has shown the profile that the runner boxing device 700 of a polyurethane foaming device is provided according to one embodiment of the present invention.Runner boxing device 700 is similar to runner boxing device 500 shown in Figure 5, also comprises 710 and four arms of supervisor.Runner boxing device 700 also comprises an air inlet pipe 720 that arranges supervisor 710, is used for passing into gases at high pressure to clean wherein residual polyurethane reaction system or the foam of polyurethane reaction System forming to runner boxing device 700, prevents line clogging.Pass into gases at high pressure cleanings runner boxing device and can be before the runner boxing polyurethane reaction system, afterwards or carry out when the situation of line clogging in the runner boxing process, occurring.Preferably, the angle of flow direction of air inlet pipe 720 and supervisor's 710 polyurethane reaction systems between 10 ° to 90 °, for example 10 °, 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, 80 ° or 90 °.
The duct cleaning effect is relevant with high-pressure gas pressure and flow.The air inlet pipe high-pressure gas pressure is 2-20bar, and gas flow is 5-50Nm
3/ hour; Preferably, gas pressure is 8-15bar, and gas flow is 30-50Nm
3/ hour.
In the present invention, described radial distribution comprises that the port of export of each arm is positioned to be responsible for the situation on the taper seat that link position with arm is the summit, if and arm quantity is more, the port of export that also comprises each arm is positioned to be responsible for the situation on two or more taper seats that link position with arm is the summit.
The purposes of polyurethane foaming device and using method
According to one embodiment of present invention, the present invention also provides the purposes of above-mentioned polyurethane foaming device for the preparation of polyurethane ballast aggregate railway roadbed.
According to embodiments of the invention, the present invention also provides a kind of method for preparing polyurethane ballast aggregate railway roadbed, and the method comprises:
Obtain one section railway roadbed that is equipped with ballast aggregate; With
Use polyurethane foaming device provided by the present invention that the polyurethane reaction system is poured in the described ballast aggregate and foam, form described polyurethane ballast aggregate railway roadbed with described ballast aggregate.
The railway roadbed that is equipped with ballast aggregate can be the ballast aggregate railway roadbed of laying in the process of preparation polyurethane railway roadbed, also can be the railway roadbed that renovates reconstruction that has been equipped with ballast aggregate, and ballast aggregate wherein is piled into suitable shape according to the requirement of construction of railways.
Preferably, each arm of described polyurethane foaming device is separately positioned on described sleeper both sides, so that described polyurethane foam system is poured in the ballast aggregate in described sleeper both sides by described each arm.Also preferably, each arm of described polyurethane foaming device is arranged on the homonymy of described sleeper, so that described polyurethane foam system is poured in the ballast aggregate at described sleeper homonymy by described each arm.
According to embodiments of the invention, the present invention also provides a kind of method for preparing polyurethane ballast aggregate railway roadbed, and the method comprises:
Obtain one section railway roadbed that is equipped with ballast aggregate; With
Using the polyurethane foaming device that is provided with air inlet pipe described supervisor provided by the invention that the polyurethane reaction system is poured in the ballast aggregate foams, form polyurethane ballast aggregate railway roadbed with ballast aggregate, wherein said air inlet pipe high-pressure gas pressure is 2-20bar, and gas flow is 5-50Nm
3/ hour.Preferably, described high-pressure gas pressure is 8-15bar, and gas flow is 30-50Nm
3/ hour, thereby clean the foam of polyurethane reaction system residual in the described runner boxing device or polyurethane reaction system foaming formation.
The pipe-line purging effect is relevant with high-pressure gas pressure and flow.As air inlet pipe high-pressure gas pressure 2-5bar greatly, gas flow is 5-20Nm
3/ hour the time, clean 2 minutes, pipeline still has a small amount of remaining polyurethane reaction system or polyurethane foam.When gas pressure is 5-8bar, gas flow is 20-30Nm
3/ hour, clean 1 minutes, polyurethane reaction system or the polyurethane foam of the remaining small amount of pipeline.When gas pressure is 8-15bar, gas flow 30-50Nm
3/ hour, only need clean 2-6 second, can reach same pipe-line purging effect.In practical operation, cleaning time can cleaning effect according to actual needs be determined.
Embodiment
The following example is used for the explanation preferred embodiment of the invention.It will be understood by those skilled in the art that in the technology disclosed in the following example to have represented inventor's technology that find, that in the present invention's practice, go on well, therefore can be considered to consist of in practice preferred pattern.But under enlightenment of the present disclosure, what those skilled in the art should understand that is when not leaving spirit and scope of the invention, can make many changes and obtain similar result disclosed specific embodiment.
Raw material and the description of equipment mentioned in the context are as follows:
Desmodur PF: the about 600mPas of viscosity when isocyanate prepolymer, 23.0%, 25 ℃ of NCO content, can buy from Bayer Material Science Co., Ltd.
Desmodur PA09: the about 475mPas of viscosity when isocyanate prepolymer, 24.5%, 25 ℃ of NCO content, can buy from Bayer Material Science Co., Ltd.
Desmodur 0926: the about 1000mPas of viscosity when isocyanates polyester-type prepolymer, 19.2%, 25 ℃ of NCO content, can buy from Bayer Material Science Co., Ltd.
Terathane 2000: the about 1200mPas of viscosity when PolyTHF (PTMEG), 56,40 ℃ of hydroxyl values, can buy from Bayer Material Science Co., Ltd.
Bayflex CE 8070: the about 18mPas of viscosity when chain extender, 1598,25 ℃ of hydroxyl values, can buy from Bayer Material Science Co., Ltd.
Bayflex CE 8075: the about 20mPas of viscosity when chain extender, 1610,25 ℃ of hydroxyl values, can buy from Bayer Material Science Co., Ltd.
Desmophen 2003E: the about 560mPas of viscosity when PEPA system, 56,75 ℃ of hydroxyl values, can buy from Bayer Material Science Co., Ltd.
Bayflex 12BX012: the about 1050mPas of viscosity when PPG system, 102,25 ℃ of hydroxyl values, can buy from Bayer Material Science Co., Ltd.
Dabco 33LV: the tertiary amine-type catalyst, can buy from air chemical products Co., Ltd.
DABCO DC193: surfactant, can buy from air chemical products Co., Ltd.
Solkane 365/227: blowing agent, can buy from Su Wei fluorine chemistry Co., Ltd.
The conventional high pressure casting machine of HK650 type: can buy from Hennecke company.
The conventional high pressure casting machine of HK1250 type: can buy from Hennecke company.
The conventional high pressure casting machine of HK2500 type: can buy from Hennecke company.
Embodiment 1
The ballast aggregate building stones are piled into the packed structures that satisfies the requirement of ballast aggregate railway roadbed.With the conventional high pressure casting machine of HK 650 types, in 20 seconds, the component DESMODUR PA 09 of polyurethane reaction system and BAYFLEX 12BX012 pressed runner boxing device 200 runner boxings of the listed consumption of table 1 by as shown in Figure 2, being the polyurethane reaction system is entered by the supervisor 210 of runner boxing device 200, and from two arms 220 and 230 outflows, be poured in the packed structures of ballast aggregate building stones, foaming is solidified, and polyurethane foam namely forms polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.Wherein the distance between two arms 220 and 230 the port of export is 25 centimetres.
Table 1:
Owing in the runner boxing device, having introduced two arms, having significantly improved the work discharge-amount that applies the conventional high pressure casting machine of polyurethane reaction system HK 650 types.After the polyurethane reaction system is shunted by this runner boxing device 200, be applied in the ballast gap that the ballast aggregate building stones are piled into roadbed through two arms 220 and 230 of runner boxing device, polyurethane reaction system foamed solidification forms polyurethane foam, namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.
Embodiment 2
The ballast aggregate building stones are piled into the packed structures that satisfies the requirement of ballast aggregate railway roadbed.With the conventional high pressure casting machine of HK 1250 types, in 25 seconds, the component of polyurethane reaction system is passed through as shown in Figure 3 Y type runner boxing device 300 shuntings by the listed consumption of table 2-1, to be the polyurethane reaction system by the supervisor 310 of Y type runner boxing device enter from two arms 320 and 330 flows out, be poured in the packed structures of ballast, foaming, solidify, polyurethane foam namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.Wherein the distance between two arms 320 and 330 the port of export is 27 centimetres.
Table 2-1
| Project | Unit | Property of raw material | Prescription 2-1 | Prescription 2-2 |
| Desmophen 2003E | Weight portion | Material temperature 30-40 ℃ | 100 | 100 |
| Desmodur 0926 | Weight portion | Material temperature 30-40 ℃ | 115 | 115 |
| Bayflex CE 8070 | Weight portion | Material temperature 30-40 ℃ | 17 | - |
| Bayflex CE 8075 | Weight portion | Material temperature 30-40 ℃ | - | 15 |
Polyurethane foam in this polyurethane ballast aggregate railway roadbed is obtained by PEPA system foaming, is specially adapted to the railway ballast of heavy haul railway railway roadbed and desert area based on the polyurethane ballast aggregate railway roadbed of PEPA system in the present embodiment.
Owing in the runner boxing device, having introduced two arms, significantly improved the work discharge-amount that applies the conventional high pressure casting machine of polyurethane reaction system HK 1250 types, after the polyurethane reaction system is shunted by this Y type runner boxing device, be applied in the ballast gap that the ballast aggregate building stones are piled into roadbed through two arms 320 and 330 of Y type runner boxing device, polyurethane reaction system foamed solidification forms polyurethane foam, namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.
Embodiment 3
The ballast aggregate building stones are piled into the packed structures that satisfies the requirement of ballast aggregate railway roadbed.With the conventional high pressure casting machine of HK 2500 types, in 16 seconds, the component of polyurethane reaction system is passed through as shown in Figure 4 runner boxing device 400 shuntings by the listed consumption of table 3-1, to be the polyurethane reaction system by the supervisor 410 of runner boxing device enter from three arms 420,430 and 440 flows out, be poured in the packed structures of ballast, foaming, solidify, polyurethane foam namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.Wherein the distance between three arms 420,430 and 440 ports of export is 29 centimetres.
Table 3-1
| Project | Unit | Property of raw material | Prescription 3-1 |
| Terathane 2000 | Weight portion | Material temperature 30-40 ℃ | 92.75 |
| BDO | Weight portion | Material temperature 30-40 ℃ | 6 |
| 33LV | Weight portion | Material temperature 30-40 ℃ | 1 |
| Water | Weight portion | Material temperature 30-40 ℃ | 0.15 |
| Desmodur PF | Weight portion | Material temperature 30-40 ℃ | 46 |
Among the embodiment 3, make the polyurethane ballast aggregate railway roadbed that the polyurethane reaction system prepares filling polyurethane with PolyTHF polyalcohol system and still keep at low temperatures good physical and mechanical properties, be applicable to railway ballast and the heavy haul railway railway roadbed of high height above sea level, extremely frigid zones.
Owing in the runner boxing device, having introduced three arms, significantly improved the work discharge-amount that applies the conventional high pressure casting machine of polyurethane reaction system HK 2500 types, after the polyurethane reaction system is shunted by this four-way pipe runner boxing device, be applied in the ballast gap that the ballast aggregate building stones are piled into roadbed through three arms 420,430 and 440, polyurethane reaction system foamed solidification forms polyurethane foam, namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.
Embodiment 4
The ballast aggregate building stones are piled into the packed structures that satisfies the requirement of ballast aggregate railway roadbed.With the conventional high pressure casting machine of HK 2500 types, component DESMODUR PA 09 and BAYFLEX 12BX012 with the polyurethane reaction system in 10 seconds pass through as shown in Figure 5 runner boxing device 500 shuntings by the listed consumption of table 4-1, be that the polyurethane reaction system is entered from four arms 520,530,540 and 550 outflows by the supervisor 510 of runner boxing device shown in Figure 5 respectively, be poured in the packed structures of ballast, foaming, solidify, polyurethane foam namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.Wherein the distance between four arms 520,530,540 and 550 ports of export is 26 centimetres.
Table 4-1
| Project | Unit | Property of raw material | Prescription 4-1 |
| Bayflex 12BX012 | Weight portion | Material temperature 25-30 ℃ | 100 |
| Desmodur PA 09 | Weight portion | Material temperature 25-30 ℃ | 44 |
Among the embodiment 4, polyurethane ballast aggregate railway roadbed has good physical and mechanical properties, good stability and good durability, curing cycle that can significant prolongation ballast aggregate railway roadbed, is specially adapted to the railway ballast in moist many water area.
Owing in the runner boxing device, having introduced four arms, significantly improved the work discharge-amount that applies the conventional high pressure casting machine of polyurethane reaction system HK 2500 types, after the polyurethane reaction system is shunted by this runner boxing device, be applied in the ballast gap that the ballast aggregate building stones are piled into roadbed through four arms 520,530,540 and 550, polyurethane reaction system foamed solidification forms polyurethane foam, namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.
Embodiment 5
The ballast aggregate building stones are piled into the packed structures that satisfies the requirement of ballast aggregate railway roadbed.With the conventional high pressure casting machine of HK 2500 types, component DESMODUR PA 09 and BAYFLEX 12BX012 with the polyurethane reaction system in 10 seconds pass through as shown in Figure 6 runner boxing device 600 runner boxings by the listed consumption of table 5-1, being the polyurethane reaction system enters two arms 620 and 630 by the supervisor 610 of runner boxing device shown in Figure 6, again from four again isocon 624,628,634 and 638 outflows, be poured in the packed structures of ballast, foaming, solidify, polyurethane foam namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.Again the distance between isocon 624 and 628 ports of export and again the distance between isocon 634 and 638 ports of export equate, be 25 centimetres.
Table 5-1
| Project | Unit | Property of raw material | Prescription 5-1 |
| Bayflex 12BX012 | Weight portion | Material temperature 25-30 ℃ | 100 |
| Desmodur PA 09 | Weight portion | Material temperature 25-30 ℃ | 44 |
Among the embodiment 5, polyurethane ballast aggregate railway roadbed has good physical and mechanical properties, good stability and good durability, curing cycle that can significant prolongation ballast aggregate railway roadbed, is specially adapted to the railway ballast in moist many water area.
Owing in the runner boxing device, having introduced four arms, significantly improved the work discharge-amount that applies the conventional high pressure casting machine of polyurethane reaction system HK 2500 types, after the polyurethane reaction system is shunted by this runner boxing device, be applied in the ballast gap that the ballast aggregate building stones are piled into roadbed through four arms 624,628,634 and 638, polyurethane reaction system foamed solidification forms polyurethane foam, namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.
Embodiment 6
The ballast aggregate building stones are piled into the packed structures that satisfies the requirement of ballast aggregate railway roadbed.With the conventional high pressure casting machine of HK 2500 types, component DESMODUR PA 09 and BAYFLEX 12BX012 with the polyurethane reaction system in 10 seconds pass through as shown in Figure 7 runner boxing device 700 shuntings by the listed consumption of table 6-1, to be the polyurethane reaction system by the supervisor 710 of runner boxing device shown in Figure 7 enter from four arms 730,740,750 and 760 flows out, be poured in the packed structures of ballast, foaming, solidify, polyurethane foam namely becomes polyurethane ballast aggregate railway roadbed with the ballast aggregate building stones.The runner boxing device supervisor 710 on air inlet pipe 720 is set, the angle of flow direction of 710 kinds of polyurethane reaction systems of this air inlet pipe and supervisor is 45 degree.
Table 6-1
| Project | Unit | Property of raw material | Prescription 6-1 |
| Bayflex 12BX012 | Weight portion | Material temperature 25-30 ℃ | 100 |
| Desmodur PA 09 | Weight portion | Material temperature 25-30 ℃ | 44 |
In the runner boxing device, introduce four arms, significantly improved the work discharge-amount that applies the conventional high pressure casting machine of polyurethane reaction system HK 2500 types.Simultaneously, introduce air inlet pipe 720 supervisor 710, after the cast of polyurethane reaction system finishes, gases at high pressure blow out from four arms by tracheae 720, cleaning remains in polyurethane reaction system in the runner boxing device or the foam of polyurethane reaction System forming, prevents the obstruction of runner boxing device, wherein, the pressure of gases at high pressure is 9bar, and gas flow is 40Nm
3/ hour.
The those skilled in the art easily knows, the present invention is not limited only to the detail of aforementioned illustrated embodiment, and under the prerequisite that does not break away from spirit of the present invention or key property, the present invention can be embodied as other particular forms.Therefore all should be with described embodiment regarded as illustrative from any angle and nonrestrictive, thereby by claims but not above stated specification is pointed out scope of the present invention; And therefore any change as long as it belongs in the implication and scope of claim equivalent, all should be regarded as and belong to the present invention.
Claims (16)
1. polyurethane foaming device comprises:
One is mixed output device, and be used for the polyurethane reaction component is mixed into the polyurethane reaction system, and export described polyurethane reaction system, and
A runner boxing device, described runner boxing device comprises a supervisor and at least two arms, described supervisor is connected that with described mixing output device described polyurethane reaction system is sent to described arm, described arm is communicated with described supervisor, with the described polyurethane reaction system of runner boxing.
2. described polyurethane foaming device according to claim 1, wherein, described supervisor is connected with described mixing output device with dismountable connected mode.
3. polyurethane foaming device according to claim 2, wherein, described dismountable connected mode for be threaded, socket joint connection, clamp connection or self-locking connect.
4. polyurethane foaming device according to claim 3, wherein, described dismountable connected mode is that self-locking connects.
5. polyurethane foaming device according to claim 1, wherein, one in the described arm is straight tube, right-angle elbow pipe structure or half n shape structure.
6. polyurethane foaming device according to claim 5, wherein, described each arm radially distributes take described supervisor's center line as axle.
7. polyurethane foaming device according to claim 6, wherein, the distance between described each arm port of export is 23-31 centimetre.
8. each described polyurethane foaming device according to claim 1-7, wherein, one the port of export in the described arm connects at least two again shunt pipes.
9. polyurethane foaming device according to claim 8, wherein, the distance between the port of export of described again shunt pipe is 23-31 centimetre.
10. each described polyurethane foaming device according to claim 1-7, wherein, also be provided with an air inlet pipe on the described supervisor, be used for passing into the foam that gases at high pressure form to clean the foaming of polyurethane reaction system residual in the described runner boxing device or polyurethane reaction system to described runner boxing device.
11. one kind prepares polyurethane ballast aggregate road bed process, described method comprises step:
Obtain one section railway roadbed that is equipped with ballast aggregate; With
Each described polyurethane foaming device is poured into the polyurethane reaction system in the described ballast aggregate and foams in using according to claim 1-10, forms described polyurethane ballast aggregate railway roadbed with described ballast aggregate.
12. method according to claim 11, described railway roadbed comprise one section sleeper, wherein, described runner boxing device can straddle on the sleeper by each arm, so that described polyurethane foam system is poured in the ballast aggregate in described sleeper both sides by described each arm.
13. method according to claim 11, wherein, described railway roadbed comprises one section sleeper, and each arm of described polyurethane foaming device is arranged on the homonymy of described sleeper, so that described polyurethane foam system is poured in the ballast aggregate at described sleeper homonymy by described each arm.
14. one kind prepares polyurethane ballast aggregate road bed process, described method comprises step:
Obtain one section railway roadbed that is equipped with ballast aggregate; With
Use polyurethane foaming device according to claim 10 that the polyurethane reaction system is poured in the described ballast aggregate and foam, form described polyurethane ballast aggregate railway roadbed with described ballast aggregate,
Wherein, described air inlet pipe high-pressure gas pressure is 2-20bar, and gas flow is 5-50Nm
3/ hour.
15. method according to claim 14, wherein said high-pressure gas pressure are 8-15bar, gas flow is 30-50Nm
3/ hour.
16. each described polyurethane foaming device is for the preparation of the purposes of polyurethane ballast aggregate railway roadbed among the claim 1-10.
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| CN2011102349507A CN102950694A (en) | 2011-08-16 | 2011-08-16 | Polyurethane foaming device, its application and using method |
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| CN2011102349507A CN102950694A (en) | 2011-08-16 | 2011-08-16 | Polyurethane foaming device, its application and using method |
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Cited By (2)
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| CN104991054A (en) * | 2015-07-15 | 2015-10-21 | 重庆科技学院 | Fluid test instrument multi-region flow dividing pipe and use method |
| CN114808565A (en) * | 2022-03-10 | 2022-07-29 | 中铁四局集团有限公司 | Construction method of polyurethane curing ballast bed |
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| CN101663437A (en) * | 2007-04-24 | 2010-03-03 | 亨内克股份有限公司 | The method and apparatus that is used for the foam filling of railway roadbed |
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Application publication date: 20130306 |