CN86207500U - Direct buried insulation tube for resisting corrosion and high temperature - Google Patents

Direct buried insulation tube for resisting corrosion and high temperature Download PDF

Info

Publication number
CN86207500U
CN86207500U CN 86207500 CN86207500U CN86207500U CN 86207500 U CN86207500 U CN 86207500U CN 86207500 CN86207500 CN 86207500 CN 86207500 U CN86207500 U CN 86207500U CN 86207500 U CN86207500 U CN 86207500U
Authority
CN
China
Prior art keywords
layer
pipe
rpuf
direct
direct buried
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN 86207500
Other languages
Chinese (zh)
Inventor
周学禹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 86207500 priority Critical patent/CN86207500U/en
Publication of CN86207500U publication Critical patent/CN86207500U/en
Withdrawn legal-status Critical Current

Links

Images

Abstract

The utility model discloses a direct buried insulation tube which adopts the lacquer of the pipelines of epoxy coal tar or fluorocarbon lacquer as an anticorrosive layer, adopts rigid polyurethane foam plastic and extra-fine glass-wool felts without alkali as heat-insulating materials, and adopts the glass fibre reinforced plastic of chlorosulfonated polyethylene as a protecting layer. The utility model has the advantages of favorable heat-insulating property, low cost, convenient construction, long service life, water prevention, corrosion prevention, and anti-natural weathering. The direct buried insulation tube can be used for the direct buried pipelines of the areas of high underground water levels, and can also be used for pipe ditches and overhead laying.

Description

Direct buried insulation tube for resisting corrosion and high temperature
The utility model belongs to heat supply pipeline equipment.
Since 1954, the pipeline of municipal heating systems or district heating has generally used RPUF to make thermal insulation layer abroad, and plastic bushing is made the direct-burried heat supply pipeline of protective layer.University Of Tianjin has also proposed polyurethane direct-burried heat supply pipeline nineteen eighty-three, has solved the problem that waterproof, corrosion protection and the Wu Gou of direct-burried heat supply pipeline lay, and applies for a patent to Patent Office of the People's Republic of China.Announced with the 85.2.01017 application number." polyurethane " direct-burried heat supply pipeline has following four problems to fail to satisfactorily resolve: 1. pipeline serviceability temperature only limits to the cryotronl below 120 ℃; 2. the cyanogen price of coagulating is higher; 3. it is limited to make the glass fibre reinforced plastics anti-corrosion capacity with unsaturated polyester, and is afraid of solar radiation; 4. because cyanogen coagulates and polyurethane between secure bond together, when the steel pipe occurrence temperature be out of shape, can make thermal insulation layer occur rupturing, make it to lose waterproof and etch-proof ability.
The purpose of this utility model is to provide a kind of temperature limitation that is not subjected to, and strengthens corrosion protection, waterproof, anti-natural weathering, increases toughness, cheap heat supply thermal insulation pipe.
Characteristics of the present utility model are: direct-buried insulated pipe is made up of anticorrosive coat, thermal insulation layer and etch-proof protective layer three parts.Wherein, anticorrosive coat is to adopt the outer wall at metal tube to be coated with epoxide coal bituminous pipe paint of one deck or fluorine carbon lacquer equably, and it has the performance of acid-fast alkali-proof and the variation of heatproof degree, and has antimicrobial corrosion, the advantage of good insulation preformance; Thermal insulation layer adopts RPUF and alkali-free extra-fine glass-wool felt, or alumina silicate, and it has, and thermal conductivity is little, and water absorption rate is little, the advantage of the good and acid-fast alkali-proof of compression and tensile strength; Protective layer be direct-buried insulated pipe directly with extraneous contact segment, adopt chlorosulfonated polyethylene glass fibre reinforced plastics, it has wear-resistant, resistance to compression, waterproof, anti-strong acid and strong base and the etch of salt and the advantage that prevents natural weathering.
Structure of the present utility model is as shown in the figure: Fig. 1 is a low temperature thermal insulation pipe shaft side figure, and Applicable temperature is below 180 ℃, and Fig. 2 is the high temperature heat insulation pipe shaft side figure, and Applicable temperature is more than 180 ℃.Wherein, Fig. 1: 1-steel conduit; The epoxide coal bituminous pipe paint of 2-, and brush one deck pitch (or oil of the cold end) again on its surface; The 3-RPUF; 4-chlorosulfonated polyethylene glass fibre reinforced plastics.Fig. 2: 1-steel conduit; 2-fluorine carbon is painted brush one deck bituminous paint; The 3-RPUF; 4-chlorosulfonated polyethylene glass fibre reinforced plastics; 5-asphalt-bonded glass blanket, or alkali-free extra-fine glass-wool felt, or alumina silicate.
The utility model with heat supply pipeline be divided into 120 ℃, 150 ℃, 180 ℃, 300 ℃, various classifications more than 400 ℃ and 400 ℃.Corrosion-resistant coating and thermal insulation layer should be looked medium temperature and be different.A, when the fed sheet of a media temperature is below 180 ℃ the time, make anticorrosive with epoxide coal bituminous pipe paint, make thermal insulation layer with RPUF, polyurethane the upper limit temperature of heat tolerance is 133 ℃, serviceability temperature is 120 ℃, confirm when temperature surpasses 133 ℃ through test, polyurethane generation carbonization, structure there is no destruction, still plays insulation effect, along with the thickening of increase in temperature carburization zone, temperature is in the time of 180 ℃, carburization zone thickness is 1~1.5 centimeter, and 1.5 centimeters polyurethane foam no changes in addition are so the serviceability temperature limit of RPUF can be brought up to 180 ℃; B, when serviceability temperature is 180 ℃~300 ℃, make corrosion-resistant coating with fluorine carbon lacquer, with the composite heat-insulating layer insulation, composite heat-insulating layer is divided into two-layer: first layer alkali-free extra-fine glass-wool felt, or asphalt-bonded glass blanket, or alumina silicate.The second layer is still made thermal insulation layer with RPUF.Be the difference of composite bed according to the thermal insulation pipe temperature, the number of plies structure of decision composite heat-insulating layer; C, when the fed sheet of a media temperature is more than 400 ℃ or 400 ℃ the time, this pipeline mostly is built on stilts and lays, and can not make corrosion-resistant coating, thermal insulation layer still adopts lamination layer structure; D, between anticorrosive coat and thermal insulation layer, be coated with one deck pitch or oil of the cold end, when pipeline is not worked, this layer plays the anticorrosive effect of waterproof, when pipeline is worked, the temperature oil of the cold end that raises dissolves, make between pipeline and the thermal insulation layer to form one and can make pipeline free, to guarantee not reason pipe deforming and rupturing of thermal insulation layer along the space of stretching.
The anticorrosive paint that the utility model adopts, solidifying better than cyanogen from comprehensive comparison, and also cost is low, makes protective layer with chlorosulfonated polyethylene fiberglass, is that other resistant material is incomparable, and low price. This insulating tube can be in the factory process moulding, and the assembled in situ construction improves speed of application.
The utility model can be widely used in the industrial departments such as national defence, electric power, oil, chemical industry, urban construction, metallurgical heat supply network engineering, underground heat, refrigeration, be applicable to direct-burried underground pipings such as carrying various heating installation, hot water, natural gas, liquefied gas, oil product and other aqueous medium, also can be used as the usefulness of various empty frame pipelines.

Claims (3)

1, a kind of direct-buried insulated pipe of forming by conduit, anticorrosive coat, thermal insulation layer and etch-proof protective layer; it is characterized in that conduit is a steel pipe; the anticorrosive coat of outer wall of steel pipe is made anticorrosive coating with epoxide coal bituminous pipe paint or fluorine carbon lacquer; protective layer used RPUF and alkali-free extra-fine glass-wool felt; or alumina silicate is made thermal insulating material, waterproof, etch-proof protective layer used chlorosulfonated polyethylene glass fibre reinforced plastics.
2,, it is characterized in that said anticorrosive coat is according to the described direct-buried insulated pipe of claim 1: when fed sheet of a media below 180 ℃ the time, make anticorrosive coating with epoxide coal bituminous pipe paint; When fed sheet of a media during, make anticorrosive coating with fluorine carbon lacquer at 180 ℃~300 ℃.
3, according to the described direct-buried insulated pipe of claim 1, it is characterized in that: when fed sheet of a media more than 180 ℃ the time, make thermal insulating material with RPUF; When fed sheet of a media more than 180 ℃ the time, adopt composite heat-insulating layer, first layer alkali-free extra-fine glass-wool felt, or asphalt-bonded glass blanket, or alumina silicate; Second layer RPUF.
CN 86207500 1986-10-24 1986-10-24 Direct buried insulation tube for resisting corrosion and high temperature Withdrawn CN86207500U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 86207500 CN86207500U (en) 1986-10-24 1986-10-24 Direct buried insulation tube for resisting corrosion and high temperature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 86207500 CN86207500U (en) 1986-10-24 1986-10-24 Direct buried insulation tube for resisting corrosion and high temperature

Publications (1)

Publication Number Publication Date
CN86207500U true CN86207500U (en) 1988-04-13

Family

ID=4809916

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 86207500 Withdrawn CN86207500U (en) 1986-10-24 1986-10-24 Direct buried insulation tube for resisting corrosion and high temperature

Country Status (1)

Country Link
CN (1) CN86207500U (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101089447B (en) * 2006-06-14 2010-06-09 布鲁格罗尔控股公司 Conduit pipe with thermal insulation
CN102661472A (en) * 2012-05-07 2012-09-12 河北盛伟基业玻璃钢制品有限公司 Double-wall interlayer heat-insulation glass steel tank body or cylinder and manufacturing method thereof
CN104075044A (en) * 2014-07-19 2014-10-01 李小红 Natural gas pipeline
CN104406012A (en) * 2014-11-04 2015-03-11 北京市燃气集团有限责任公司 Heat insulation structure and heat insulation method of polyethylene gas pipeline
CN104455775A (en) * 2014-12-05 2015-03-25 广东省建筑工程集团有限公司 Neutron radiation resistant radioactive area relating air pipe
CN104747824A (en) * 2014-07-30 2015-07-01 李莹 Outer-hexagonal anti-corrosion sterilization steel pipe
CN104747821A (en) * 2014-07-30 2015-07-01 李莹 Hexagonal socket anti-corrosion flame retarding steel tube
CN106979424A (en) * 2017-04-05 2017-07-25 鑫鹏源智能装备集团有限公司 A kind of titanium alloy multipurpose reducer pipe
CN107387889A (en) * 2016-05-17 2017-11-24 高金龙 The durable body of multi-purpose type corrosion-resistant thermal insulation
CN107816600A (en) * 2017-10-04 2018-03-20 镇江市星耀智能装备有限公司 A kind of anti-corrosion pipeline
CN111098993A (en) * 2019-12-31 2020-05-05 吴江新华航标制造有限公司 Lamp pile suitable for corrosive environment

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101089447B (en) * 2006-06-14 2010-06-09 布鲁格罗尔控股公司 Conduit pipe with thermal insulation
CN102661472A (en) * 2012-05-07 2012-09-12 河北盛伟基业玻璃钢制品有限公司 Double-wall interlayer heat-insulation glass steel tank body or cylinder and manufacturing method thereof
CN104075044A (en) * 2014-07-19 2014-10-01 李小红 Natural gas pipeline
CN104747824A (en) * 2014-07-30 2015-07-01 李莹 Outer-hexagonal anti-corrosion sterilization steel pipe
CN104747821A (en) * 2014-07-30 2015-07-01 李莹 Hexagonal socket anti-corrosion flame retarding steel tube
CN104406012A (en) * 2014-11-04 2015-03-11 北京市燃气集团有限责任公司 Heat insulation structure and heat insulation method of polyethylene gas pipeline
CN104455775A (en) * 2014-12-05 2015-03-25 广东省建筑工程集团有限公司 Neutron radiation resistant radioactive area relating air pipe
CN107387889A (en) * 2016-05-17 2017-11-24 高金龙 The durable body of multi-purpose type corrosion-resistant thermal insulation
CN106979424A (en) * 2017-04-05 2017-07-25 鑫鹏源智能装备集团有限公司 A kind of titanium alloy multipurpose reducer pipe
CN107816600A (en) * 2017-10-04 2018-03-20 镇江市星耀智能装备有限公司 A kind of anti-corrosion pipeline
CN111098993A (en) * 2019-12-31 2020-05-05 吴江新华航标制造有限公司 Lamp pile suitable for corrosive environment

Similar Documents

Publication Publication Date Title
CN86207500U (en) Direct buried insulation tube for resisting corrosion and high temperature
CN2101155U (en) High-temp. resistant direct built-in type thermo-insulating tube
CN214789512U (en) Glass fiber reinforced plastic pipeline for ship
CN211738277U (en) Composite material anti-corrosion blow-off pipe for drainage engineering
CN211203163U (en) Ceramic lining composite steel pipe with corrosion resistance
CN205207940U (en) Anticorrosive compound incubation pipeline that buries of diameter -variable high temperature resistantly
CN216715452U (en) Wear-resisting type PP-R feed pipe
CN218914013U (en) Basalt Fiber (CBF) reinforced polyethylene composite pipe
CN111622684A (en) Nonmetal composite oil pipe for continuously coating cable
CN218031874U (en) Municipal works are with special corrosion-resistant pipeline of domestic water
CN215172917U (en) Anticorrosive low temperature resistant FRP pipe
CN218599028U (en) Special-shaped seamless steel pipe
CN211738276U (en) Wear-resistant water supply pipe
CN212657377U (en) Municipal administration drainage is with anticorrosion transport pipe way
CN215410595U (en) Heating system and communicating pipe thereof
CN211550779U (en) Corrosion-resistant PE water supply pipe
CN212811245U (en) Improved anti-freezing and cold-proof composite steel pipe structure
CN217927596U (en) Bamboo winding composite pipe with high tensile strength
CN2333865Y (en) Water repellent high-temp. direct-buried insulating pipe
CN220396780U (en) Novel corrosion-resistant pipeline
CN2536886Y (en) GFRP foamed anticorrosion thermal insulated heating pipeline
CN2200099Y (en) High or medium temp. direct embedded sliding type compound insulating thermal pipe
CN218118938U (en) Compound type shockproof overhead thermal insulation pipe
CN213900173U (en) High-strength and high-corrosion-resistance carbon fiber pipe
CN213176442U (en) Corrosion-resistant precision cold-rolled steel pipe for automobile transmission shaft

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C15 Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993)
RN01 Renewal of patent term
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee