CN102922651B - The processing method of anti-shearing high-temperature resistant water polyurethane composite thermal insulation pipe - Google Patents
The processing method of anti-shearing high-temperature resistant water polyurethane composite thermal insulation pipe Download PDFInfo
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- CN102922651B CN102922651B CN201210394022.1A CN201210394022A CN102922651B CN 102922651 B CN102922651 B CN 102922651B CN 201210394022 A CN201210394022 A CN 201210394022A CN 102922651 B CN102922651 B CN 102922651B
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Abstract
The invention discloses a kind of processing method of anti-shearing high-temperature resistant water polyurethane composite thermal insulation pipe, it is characterized in that taking following procedure of processing: (1) removes the impurity that outer wall of steel pipe attaches; (2) by lifting steel pipes on bracket, start spray gun heat-insulation material is evenly injected into outer wall of steel pipe with spray film form, coating thickness 1.5-2.5mm; (3) 1-1.5 hour after spraying, is enclosed within outer pillar outside steel pipe by poling machine; (4) adopt isocyanates and PPG to be spray coating foaming raw material, be sprayed onto in outer pillar by foamed and sprayed device, form foam heat-insulation layer.Invention increases the operation at outer surface of steel tube spray coating heat preservation heat-insulating material, this coating can reach the effect of insulation, cooling, enhances product performance.Under the service condition of superhigh temperature, the service life of insulating tube can be extended, replace the steam insulation pipe that pumped (conveying) medium temperature is lower simultaneously, reduce input cost, energy-saving and cost-reducing, meet the need of market.
Description
Technical field
The invention belongs to pipeline processing field, specifically a kind of processing method of insulating tube.
Background technology
In the prior art, China's hot water heat insulating pipe mainly adopts polyurethane heat-insulation form.In view of the characteristic of insulation material, maximum operation (service) temperature is confined to less than 120 DEG C always.But, at present in actual power plant, often occur that superhigh temperature uses phenomenon, temperatures as high 130-150 DEG C.In this case, be easy to the high temperature cabonization causing polyurethane insulation coating, affect heat insulation effect and the service life of insulating tube.
Summary of the invention
The object of the present invention, is to overcome the above-mentioned deficiency of prior art, provides a kind of processing method of refractory composite heat insulating steel pipe; manufacturing procedure is simple, and easy to operate, the insulating steel tube processed is high temperature resistant; polyurethane insulation coating can be effectively protected, and result of use is good, the life-span is long.
For reaching above-mentioned object, the present invention takes following procedure of processing:
1. remove the impurity that outer wall of steel pipe attaches;
2. by lifting steel pipes on bracket, start spray gun heat-insulation material is evenly injected into outer wall of steel pipe with spray film form, coating thickness 1.5-2.5mm;
3. 1-1.5 hour after spraying, is enclosed within outer pillar outside steel pipe by poling machine;
4. adopt isocyanates and PPG to be spray coating foaming raw material, be sprayed onto in outer pillar by foamed and sprayed device, form foam heat-insulation layer.
Wherein, the preferred processing method of technical solution of the present invention is:
(1) rust, earth, the greasy dirt that utilize ballasting rust remover to remove pipeline outer wall to attach and anyly affect the bonding impurity of froth bed, improve the cementability of foams and tubing;
(2) by lifting steel pipes to level can make its axial constant speed rotary and constant speed advance bracket on, select the mixture of ceramic fine bead and glue as heat-insulation material, start spray gun and be evenly injected into pipeline outer wall with spray film form, coating thickness 1.5mm, spray gun and steel pipe are upright position, and jet length is 0.5m;
(3) spray latter 1 hour, the coating gel of pipeline outer wall to a certain extent, is enclosed within outer pillar outside working steel tube by poling machine;
(4) adopt isocyanates and PPG to be spray coating foaming raw material, add effective catalyst wherein, be sprayed onto in outer pillar by foamed and sprayed device, form foam heat-insulation layer;
Wherein, for accelerating the gel of outer wall of steel pipe coating, intermediate frequency device is used to heat steel pipe rustproof lacquer.
The present invention takes above-mentioned process, has following beneficial effect: invention increases the operation at outer surface of steel tube spray coating heat preservation heat-insulating material, and this coating can reach the effect of insulation, cooling, enhances product performance.Under the service condition of superhigh temperature, the service life of insulating tube can be extended, replace the steam insulation pipe that pumped (conveying) medium temperature is lower simultaneously, reduce input cost, energy-saving and cost-reducing, meet the need of market.This insulation adiabatic coating can to reduce because of working media high temperature by working steel tube heat transfer to the temperature of heat-insulation layer, reaches the object that protection polyurethane insulation coating avoids high temperature cabonization.The present invention adopts isocyanates and PPG to be spray coating foaming raw material, and this spray coating foaming raw material reaction activity is high, and material is energy immediate response also rapid gel after being injected into body surface, can form froth bed rapidly at pipe surface.
Detailed description of the invention:
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment: the present invention takes following technique:
1. the rust, earth, the greasy dirt that utilize ballasting rust remover to remove pipeline outer wall to attach and anyly affect the bonding impurity of froth bed, improve foams and tubing cementability;
2. by lifting steel pipes to level can make its axial constant speed rotary and constant speed advance bracket on, select the mixture of ceramic fine bead and glue as heat-insulation material, startup spray gun is evenly injected into pipeline outer wall with spray film form;
3. spray latter 1 hour, the coating gel of pipeline outer wall to a certain extent, is enclosed within outer pillar outside working steel tube by poling machine;
4. adopt isocyanates and PPG to be spray coating foaming raw material, add effective catalyst wherein, be sprayed onto in outer pillar by foamed and sprayed device, form foam heat-insulation layer.
The present invention is the gel accelerating outer wall of steel pipe coating, and intermediate frequency device can be used to heat steel pipe rustproof lacquer.
The invention solves single polyurethane heat-preserving pipeline can not the difficult problem of Long-Time Service temperature more than 120 DEG C, spray gun slim and graceful dexterous, be easy to operation, spray gun and steel pipe are with upright position the best, and jet length general control is at about 0.5m.To strictly control steel pipe rotating speed in process of production, guarantee that translational speed is balanced, adapt with spray gun spray volume and speed.The present invention can utilize heating in medium frequency, makes the rapid gel of heat insulating coat, increases work efficiency.
Claims (1)
1. a processing method for anti-shearing high-temperature resistant water polyurethane composite thermal insulation pipe, is characterized in that taking following procedure of processing:
(1) rust, earth, the greasy dirt that utilize ballasting rust remover to remove pipeline outer wall to attach and anyly affect the bonding impurity of froth bed, improve the cementability of foams and tubing;
(2) by lifting steel pipes to level can make its axial constant speed rotary and constant speed advance bracket on, select the mixture of ceramic fine bead and glue as heat-insulation material, start spray gun and be evenly injected into pipeline outer wall with spray film form, coating thickness 1.5mm, spray gun and steel pipe are upright position, and jet length is 0.5m;
(3) spray latter 1 hour, the coating gel of pipeline outer wall to a certain extent, is enclosed within outer pillar outside working steel tube by poling machine;
(4) adopt isocyanates and PPG to be spray coating foaming raw material, add effective catalyst wherein, be sprayed onto in outer pillar by foamed and sprayed device, form foam heat-insulation layer;
Wherein, for accelerating the gel of outer wall of steel pipe coating, intermediate frequency device is used to heat steel pipe rustproof lacquer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210394022.1A CN102922651B (en) | 2012-10-04 | 2012-10-04 | The processing method of anti-shearing high-temperature resistant water polyurethane composite thermal insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210394022.1A CN102922651B (en) | 2012-10-04 | 2012-10-04 | The processing method of anti-shearing high-temperature resistant water polyurethane composite thermal insulation pipe |
Publications (2)
| Publication Number | Publication Date |
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| CN102922651A CN102922651A (en) | 2013-02-13 |
| CN102922651B true CN102922651B (en) | 2015-11-25 |
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| CN201210394022.1A Active CN102922651B (en) | 2012-10-04 | 2012-10-04 | The processing method of anti-shearing high-temperature resistant water polyurethane composite thermal insulation pipe |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557404B (en) * | 2013-11-06 | 2015-11-25 | 北京豪特耐管道设备有限公司 | The insulated piping that a kind of production method of insulated piping and employing the method are produced |
| CN109531908A (en) * | 2018-10-30 | 2019-03-29 | 中投（天津）热力股份有限公司 | A kind of glass fibre reinforced plastics casing insulating tube production technology |
| CN111745207A (en) * | 2019-03-27 | 2020-10-09 | 张家港市振原制管有限公司 | Pipe machining equipment and pipe machining method |
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| CN1458441A (en) * | 2002-05-14 | 2003-11-26 | 于宁 | Method for eliminating external protective pipe temperature difference stress in directly buried pipeline system |
| CN101709810A (en) * | 2009-10-31 | 2010-05-19 | 大庆油田有限责任公司 | Low-temperature prefabricating process of anticorrosive heat insulating compound pipeline |
| CN201521723U (en) * | 2009-09-28 | 2010-07-07 | 大庆油田有限责任公司 | Low-temperature high-strength anti-corrosion heat insulation composite pipeline |
| CN102430507A (en) * | 2011-08-08 | 2012-05-02 | 河北昊天管业股份有限公司 | Processing technology for polyurethane insulation layer of insulation pipe |
| CN102705595A (en) * | 2012-06-03 | 2012-10-03 | 李寿山 | Thermal insulation anti-corrosive high pressure bearing special steel-plastic composite pipe |
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2012
- 2012-10-04 CN CN201210394022.1A patent/CN102922651B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458441A (en) * | 2002-05-14 | 2003-11-26 | 于宁 | Method for eliminating external protective pipe temperature difference stress in directly buried pipeline system |
| CN201521723U (en) * | 2009-09-28 | 2010-07-07 | 大庆油田有限责任公司 | Low-temperature high-strength anti-corrosion heat insulation composite pipeline |
| CN101709810A (en) * | 2009-10-31 | 2010-05-19 | 大庆油田有限责任公司 | Low-temperature prefabricating process of anticorrosive heat insulating compound pipeline |
| CN102430507A (en) * | 2011-08-08 | 2012-05-02 | 河北昊天管业股份有限公司 | Processing technology for polyurethane insulation layer of insulation pipe |
| CN102705595A (en) * | 2012-06-03 | 2012-10-03 | 李寿山 | Thermal insulation anti-corrosive high pressure bearing special steel-plastic composite pipe |
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Address after: 061300, Chengnan Industrial Zone, Yanshan County, Hebei Province Applicant after: HAOTIAN ENERGY CONSERVATION EQUIPMENT CO., LTD. Address before: 061300, Chengnan Industrial Zone, Yanshan County, Hebei Province Applicant before: Hebei Haotian Pipe Industry Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: HEBEI HAOTIAN PIPES INDUSTRY CO., LTD. TO: HAOTIAN ENERGY CONSERVATION EQUIPMENT CO., LTD. |
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| C53 | Correction of patent for invention or patent application | ||
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Address after: 061300, Chengnan Industrial Zone, Yanshan County, Hebei Province Applicant after: HAOTIAN SAVING EQUIPMENT CO., LTD. Address before: 061300, Chengnan Industrial Zone, Yanshan County, Hebei Province Applicant before: HAOTIAN ENERGY CONSERVATION EQUIPMENT CO., LTD. |
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Free format text: CORRECT: APPLICANT; FROM: HAOTIAN ENERGY CONSERVATION EQUIPMENT CO., LTD. TO: HAOTIAN SAVING EQUIPMENT CO., LTD. |
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Owner name: HEBEI HAOTIAN ENERGY INVESTMENT GROUP CO., LTD. Free format text: FORMER OWNER: HAOTIAN SAVING EQUIPMENT CO., LTD. Effective date: 20150909 |
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Effective date of registration: 20150909 Address after: 061300, Chengnan Industrial Zone, Yanshan County, Hebei, Cangzhou Applicant after: Hebei Haotian Pipe Industry Co., Ltd. Address before: 061300, Chengnan Industrial Zone, Yanshan County, Hebei Province Applicant before: HAOTIAN SAVING EQUIPMENT CO., LTD. |
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Effective date of registration: 20180524 Address after: 061000 Rong Guan Tun in Xinhua District, Cangzhou, Hebei Patentee after: Hebei Haotian thermal development Co., Ltd. Address before: 061300 Chengnan Industrial Park, Yanshan County, Cangzhou, Hebei Patentee before: Hebei Haotian Pipe Industry Co., Ltd. |
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