Summary of the invention
The invention provides a kind of two-sided baffle plate fixed bearing that stops 350 ℃ of built on stilts heat supply pipelines of heat bridge transmission, the technical problem of heat bridge effect appears in two-sided baffle plate fixed bearing easily that solved existing overhead type heat supply pipeline.
The present invention solves above technical problem by the following technical programs:
A kind of two-sided baffle plate fixed bearing that stops 350 ℃ of heat supply aerial pipelines of heat bridge transmission, comprise the support of pipelines crossbeam, outer protecting shell pipe and hot conveying steel pipe, the support of pipelines crossbeam is provided with a pair of support of pipelines load steel column, hot conveying steel pipe is arranged in the outer protecting shell pipe, between hot conveying steel pipe and outer protecting shell pipe, be provided with thermal insulation layer, the outer side wall of hot conveying steel pipe is provided with the two-sided baffle plate of a pair of steel, between the outer side wall of the two-sided baffle plate of steel and hot conveying steel pipe, be provided with the two-sided baffle plate stiffening rib of steel, fixedly connected with support of pipelines load steel column in the outer end of the two-sided baffle plate of steel, the end face of support of pipelines is provided with pre-embedded steel slab, the arc outer side surface is set with arc pallet at the end of hot conveying steel pipe, arc pallet is fixedly installed on the arc top surface carriage, the arc top surface carriage is provided with deep floor, pre-embedded steel slab is provided with the heat insulation novolac epoxy resin carriage of high strength of band pit, the arc top surface carriage is arranged in the pit of the heat insulation novolac epoxy resin carriage of high strength, stud bolt is fixed together the heat insulation novolac epoxy resin carriage of high strength and arc top surface carriage by the side plate of the heat insulation novolac epoxy resin carriage of high strength and the side plate of arc top surface carriage successively, between the inner side surface of the outer side surface of arc top surface carriage and the heat insulation novolac epoxy resin carriage of high strength, be provided with the glass wool thermal insulation layer, between the outer bottom of the pit bottom surface of the heat insulation novolac epoxy resin carriage of high strength and arc top surface carriage, be provided with the hard heat-insulated plate of calcium silicate, be provided with the heat insulation novolac epoxy resin baffle plate of high strength in the side of support of pipelines load steel column, on the outer surface of the two-sided baffle plate of steel, be provided with the alumina silicate heat insulation coating on the outer surface of the two-sided baffle plate stiffening rib of steel and on the outer surface of support of pipelines load steel column, be provided with the aluminium foil reflecting coating between the heat insulation novolac epoxy resin baffle plate of high strength and the two-sided baffle plate of steel, the two-sided baffle plate of steel abuts against with the activity of the heat insulation novolac epoxy resin baffle plate of high strength.
The heat insulation novolac epoxy resin carriage of described high strength and the heat insulation novolac epoxy resin baffle plate of high strength all are made of the heat insulation novolac epoxy resin composition of high strength, the heat insulation novolac epoxy resin composition of described high strength, in 100 weight portion weight, contain following material: the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part.
In 100 weight portion weight, described novolac epoxy resin is 65-75 part, and described glass fiber is 20-30 part, and described microporous calcium silicate is 5-8 part, and described curing agent is 2-3 part, and described promoter is 2-3 part.
The heat insulation novolac epoxy resin preparation of compositions of high strength method may further comprise the steps:
The first step, in 100 weight portion weight, get the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part;
Second step, the novolac epoxy resin of 60-80 part and the microporous calcium silicate of 2-10 part are put into stirrer, stir it is mixed;
In the 3rd step, the novolac epoxy resin and microporous calcium silicate mixture that promoter the joining of the curing agent of 1-3 part and 1-3 part mixed, stir;
The 4th step: the glass fiber of 15-30 part is immersed in the above mixture, heated 20 minutes, make the temperature of mixture reach 120 ℃-130 ℃, pressurization makes mixture solidified then, namely obtains the heat insulation novolac epoxy resin composition of high strength.
The invention has the beneficial effects as follows and blocked by defeated hot steel pipe to the heat bridge loss between support of pipelines, guaranteed that the external protective steel tube temperature is lower than 40 ℃, bearing of the present invention is identical with the working life of defeated hot steel pipe working life, and mechanical property of the present invention is identical with the two-sided fixed dam bearing of steel.
Embodiment
A kind of two-sided baffle plate fixed bearing that stops 350 ℃ of heat supply aerial pipelines of heat bridge transmission, comprise support of pipelines crossbeam 16, outer protecting shell pipe 3 and hot conveying steel pipe 1, support of pipelines crossbeam 16 is provided with a pair of support of pipelines load steel column 17, hot conveying steel pipe 1 is arranged in the outer protecting shell pipe 3, between hot conveying steel pipe 1 and outer protecting shell pipe 3, be provided with thermal insulation layer 2, the outer side wall of hot conveying steel pipe 1 is provided with the two-sided baffle plate 12 of a pair of steel, between the outer side wall of the two-sided baffle plate 12 of steel and hot conveying steel pipe 1, be provided with the two-sided baffle plate stiffening rib 13 of steel, fixedly connected with support of pipelines load steel column 17 in the outer end of the two-sided baffle plate 12 of steel, the end face of support of pipelines 16 is provided with pre-embedded steel slab 11, the arc outer side surface is set with arc pallet 4 at the end of hot conveying steel pipe 1, arc pallet 4 is fixedly installed on the arc top surface carriage 5, arc top surface carriage 5 is provided with deep floor 6, pre-embedded steel slab 11 is provided with the heat insulation novolac epoxy resin carriage 10 of high strength of band pit, arc top surface carriage 5 is arranged in the pit of the heat insulation novolac epoxy resin carriage 10 of high strength, stud bolt 7 is fixed together the heat insulation novolac epoxy resin carriage 10 of high strength by the side plate of the heat insulation novolac epoxy resin carriage 10 of high strength and the side plate of arc top surface carriage 5 successively with arc top surface carriage 5, between the inner side surface of the outer side surface of arc top surface carriage 5 and the heat insulation novolac epoxy resin carriage 10 of high strength, be provided with glass wool thermal insulation layer 9, between the outer bottom of the pit bottom surface of the heat insulation novolac epoxy resin carriage 10 of high strength and arc top surface carriage 5, be provided with the hard heat-insulated plate 8 of calcium silicate, be provided with the heat insulation novolac epoxy resin baffle plate 14 of high strength in the side of support of pipelines load steel column 17, on the outer surface of the two-sided baffle plate 12 of steel, be provided with alumina silicate heat insulation coating 15 on the outer surface of the two-sided baffle plate stiffening rib 13 of steel and on the outer surface of support of pipelines load steel column 17, be provided with the aluminium foil reflecting coating between the heat insulation novolac epoxy resin baffle plate 14 of high strength and the two-sided baffle plate 12 of steel, the two-sided baffle plate 12 of steel abuts against with heat insulation novolac epoxy resin baffle plate 14 activities of high strength.
The heat insulation novolac epoxy resin carriage 10 of described high strength and the heat insulation novolac epoxy resin baffle plate 14 of high strength all are made of the heat insulation novolac epoxy resin composition of high strength, the heat insulation novolac epoxy resin composition of described high strength, in 100 weight portion weight, contain following material: the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part.
In 100 weight portion weight, described novolac epoxy resin is 65-75 part, and described glass fiber is 20-30 part, and described microporous calcium silicate is 5-8 part, and described curing agent is 2-3 part, and described promoter is 2-3 part.
The heat insulation novolac epoxy resin preparation of compositions of high strength method may further comprise the steps:
The first step, in 100 weight portion weight, get the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part;
Second step, the novolac epoxy resin of 60-80 part and the microporous calcium silicate of 2-10 part are put into stirrer, stir it is mixed;
In the 3rd step, the novolac epoxy resin and microporous calcium silicate mixture that promoter the joining of the curing agent of 1-3 part and 1-3 part mixed, stir;
The 4th step: the glass fiber of 15-30 part is immersed in the above mixture, heated 20 minutes, make the temperature of mixture reach 120 ℃-130 ℃, pressurization makes mixture solidified then, namely obtains the heat insulation novolac epoxy resin composition of high strength.
When the heat medium flow in the hot conveying steel pipe 1 during through this fixed bearing, can be with the arc pallet 4 of heat by the steel support carriers, arc top surface carriage 5 and be welded on the pipeline the two-sided baffle plate 12 of steel to around transmit, the hard heat-insulated plate 8 of calcium silicate between arc top surface carriage 5 of the present invention and the high strength heat insulation loop epoxy resins carriage 10 can prevent effectively that heat from transmitting downwards, prevent effectively that at the cotton thermal insulation layer 9 of the space filling glass around the arc top surface carriage 5 and between the high strength heat insulation loop epoxy resins carriage 10 heat to transmitting, having guaranteed that the outer surface temperature of high strength heat insulation loop epoxy resins carriage 10 is less than 40 ℃ all around.Stud bolt 7 is one with arc top surface carriage 5 with high strength heat insulation loop epoxy resins carriage 10 close-coupled, simultaneously the weight of heat supply pipeline by stud bolt 7 be delivered to high strength heat insulation loop epoxy resins carriage 10 on, avoid the hard heat-insulated plate of calcium silicate 8 crushed, and satisfied the thrust requirement of heat supply pipeline.
Organic thermal-protective material has the low and high advantage of specific pressure intensity of thermal conductivity, be the ideal material of making high-strength heat isolating material, but the heatproof of organic thermal-protective material is lower, generally is no more than 150 ℃, can not be directly used in the heat insulated support of high temperature heat supply pipeline; And thermal insulation inorganic material has resistant to elevated temperatures advantage, but has the big shortcoming of water absorption rate; The present invention is the advantages with two class materials, forms the thermal-protective material of inorganic-organic composite structure, then can obtain the heatproof height, the high and high effect of intensity of heat-insulating efficiency.According to above-mentioned requirements, the present invention adopts epoxy resin as body material, adds reinforcing fiber and contains the strengthening agent of silicate composition, by adjusting each composition proportion, constitutes a kind of epoxy resin-matrix composite heat-insulated material.
Through the laboratory experiment test, the physical property of the heat insulation novolac epoxy resin composition of high strength of the present invention is as follows:
1, the intensity of the heat insulation novolac epoxy resin composition of high strength of the present invention sees the following form with variation of temperature
Temperature (℃) |
Room temperature |
100 |
150 |
200 |
Tensile strength sigma
b(MPa)
|
350-420 |
200-240 |
190-210 |
120-160 |
Compressive strength σ
bc(MPa)
|
160-230 |
110-130 |
90-120 |
80-100 |
2, the thermal conductivity of the heat insulation novolac epoxy resin composition of high strength of the present invention sees the following form
Temperature (℃) |
80? |
120 |
150 |
180 |
Thermal conductivity (w/m.K) |
0.315 |
0.327 |
0.336 |
0.342 |
3, the line of material expansion coefficient of the heat insulation novolac epoxy resin composition of high strength of the present invention sees the following form with the variation of temperature situation
The heat insulation novolac epoxy resin composition of high strength of the present invention can be applicable to medium temperature and on the fixing and sliding support, is made into the heat insulation bearing of high strength more than or equal to 350 ℃ pipeline, has blocked by working steel tube to the heat loss between support of pipelines.The present invention has also provided mechanical characteristic and the heat preservation property index of the heat insulation novolac epoxy resin composition of high strength first quantitatively.What the invention solves that prior art exists stops the problem of poor effect in the heat bridge loss of pipe support, the heat insulation novolac epoxy resin carriage 10 of high strength of the present invention is identical with the working life of hot conveying steel pipe with the working life of the heat insulation novolac epoxy resin baffle plate 14 of high strength, the mechanical property of the heat insulation novolac epoxy resin composition of high strength of the present invention and Q235B steel plate approach, and are high-intensity thermal-protective materials desirable in the pipe support.