CN102922651A - Processing method of anti-shearing and high temperature-resisting composite water-polyurethane heat-insulation pipe - Google Patents
Processing method of anti-shearing and high temperature-resisting composite water-polyurethane heat-insulation pipe Download PDFInfo
- Publication number
- CN102922651A CN102922651A CN2012103940221A CN201210394022A CN102922651A CN 102922651 A CN102922651 A CN 102922651A CN 2012103940221 A CN2012103940221 A CN 2012103940221A CN 201210394022 A CN201210394022 A CN 201210394022A CN 102922651 A CN102922651 A CN 102922651A
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- Prior art keywords
- pipe
- heat
- steel pipe
- insulation
- spray
- 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.)
- Granted
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 22
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 10
- 239000004814 polyurethane Substances 0.000 title claims abstract description 10
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 239000002131 composite material Substances 0.000 title claims abstract description 6
- 238000010008 shearing Methods 0.000 title claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000007921 spray Substances 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims abstract description 6
- 238000005187 foaming Methods 0.000 claims abstract description 6
- 239000012774 insulation material Substances 0.000 claims abstract description 6
- 239000012948 isocyanate Substances 0.000 claims abstract description 5
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 239000004721 Polyphenylene oxide Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229920000570 polyether Polymers 0.000 abstract 1
- 229920005862 polyol Polymers 0.000 abstract 1
- 150000003077 polyols Chemical class 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Landscapes
- Thermal Insulation (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a processing method of an anti-shearing and high temperature-resisting composite water-polyurethane heat-insulation pipe. The processing method is characterized by comprising the following processing steps of: (1) clearing away impurities adhered on the outer wall of a steel pipe; (2) lifting the steel pipe onto a bracket, starting a spray gun to uniformly spray a heat insulation material onto the outer wall of the steel pipe in the form of spray liquid, wherein the spray thickness is 1.5-2.5mm; (3) nesting an external protecting pipe outside the steel pipe through a pipe-penetrating machine within 1-1.5 hours after spraying; and (4) using isocyanate and polyether polyol as spray foaming raw materials, and spraying the raw materials into the external protecting pipe through a foam spraying device so as to form a foam heat-insulation layer. According to the processing method of an anti-shearing and high temperature-resisting composite water-polyurethane heat-insulation pipe, a procedure of spraying the heat insulation material onto the outer surface of the steel pipe is added, so that the coating can play a role of heat insulation and cooling and can improve the product performance; under the use conditions of ultrahigh temperature, the service life of the heat insulation pipe can be prolonged, and the heat insulation pipe can replace a vapor heat-insulation pipe for conveying low-temperature media, so that the input cost is reduced, the purposes of energy saving and consumption reduction are achieved, and the market demand is satisfied.
Description
Technical field
The invention belongs to the 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 the polyurethane heat-insulation form.In view of the characteristic of insulation material, maximum operation (service) temperature is confined to below 120 ℃ always.But, in actual power plant, superhigh temperature often occurring and use phenomenon at present, temperature is up to 130-150 ℃.In this case, be easy to cause the high temperature cabonization of polyurethane insulation coating, affect heat insulation effect and the service life of insulating tube.
Summary of the invention
The present invention's purpose is to overcome the above-mentioned deficiency of prior art, and a kind of processing method of refractory composite heat insulating steel pipe is provided; manufacturing procedure is simple, and is easy to operate, and the insulating steel tube that processes 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 purpose, the present invention takes following procedure of processing:
1. remove the impurity that outer wall of steel pipe attaches;
With lifting steel pipes to carriage, start spray gun and heat-insulation material evenly be injected into outer wall of steel pipe with the spray film form, coating thickness 1.5-2.5mm;
3. spraying is rear 1-1.5 hour, and outer pillar is enclosed within outside the steel pipe by poling machine;
4. adopting isocyanates and PPG is the spray coating foaming raw material, by foamed and sprayed device it is sprayed onto in the outer pillar, forms foam heat-insulation layer.
The present invention takes above-mentioned process, has following beneficial effect: the present invention has increased 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, can prolong the service life of insulating tube, contemporary for the lower steam insulation pipe of pumped (conveying) medium temperature, reduce input cost, energy-saving and cost-reducing, meet the need of market.This insulation adiabatic coating can reduce the temperature that conducts to heat-insulation layer because of working media high temperature by working steel tube heat, reaches the purpose that the protection polyurethane insulation coating is avoided high temperature cabonization.It is the spray coating foaming raw material that the present invention adopts isocyanates and PPG, and this spray coating foaming raw material reaction activity is high, and material is energy immediate response and rapid gel after being injected into body surface, can form rapidly froth bed at pipe surface.
The specific embodiment:
Below in conjunction with embodiment the present invention is described in detail.
Embodiment: the present invention takes following technique:
1. utilize ballasting rust remover to remove rust, earth, greasy dirt and any bonding impurity of froth bed that affects that pipeline outer wall attaches, improve foams and tubing cementability;
With lifting steel pipes to level can make that its axial constant speed rotary and constant speed advance carriage on, select the mixture of ceramic fine bead and glue as heat-insulation material, the startup spray gun evenly is injected into pipeline outer wall with the spray film form;
3. spray rear 1 hour, the coating gel of pipeline outer wall is enclosed within outer pillar outside the working steel tube by poling machine to a certain extent;
4. adopting isocyanates and PPG is the spray coating foaming raw material, adds therein effective catalyst, by foamed and sprayed device it is sprayed onto in the outer pillar, forms foam heat-insulation layer.
The present invention can use the intermediate frequency device that the steel pipe rustproof lacquer is heated for accelerating the gel of outer wall of steel pipe coating.
The invention solves for a long time difficult problem of serviceability temperature more than 120 ℃ of single polyurethane heat-preserving pipeline, slim and graceful dexterous, the easy operating of spray gun, spray gun and steel pipe are best with the upright position, and the jet length general control is about 0.5m.To strictly control the steel pipe rotating speed in process of production, guarantee that translational speed is balanced, adapts 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. the processing method of an anti-shearing high-temperature resistant water polyurethane composite thermal insulation pipe is characterized in that taking following procedure of processing:
(1) removes the impurity that outer wall of steel pipe attaches;
(2) with lifting steel pipes to carriage, start spray gun and heat-insulation material evenly be injected into outer wall of steel pipe with the spray film form, coating thickness 1.5-2.5mm;
(3) spraying is rear 1-1.5 hour, and outer pillar is enclosed within outside the steel pipe by poling machine;
(4) adopting isocyanates and PPG is the spray coating foaming raw material, by foamed and sprayed device it is sprayed onto in the outer pillar, forms foam heat-insulation layer.
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 |
|---|---|
| CN102922651A true CN102922651A (en) | 2013-02-13 |
| CN102922651B CN102922651B (en) | 2015-11-25 |
Family
ID=47637649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102922651B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557404A (en) * | 2013-11-06 | 2014-02-05 | 北京豪特耐管道设备有限公司 | Production method of heat insulation pipeline and heat insulation pipeline adopting method |
| 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 |
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 |
| 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 |
-
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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557404A (en) * | 2013-11-06 | 2014-02-05 | 北京豪特耐管道设备有限公司 | Production method of heat insulation pipeline and heat insulation pipeline adopting method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102922651B (en) | 2015-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
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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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: HEBEI HAOTIAN PIPES INDUSTRY CO., LTD. TO: HAOTIAN ENERGY CONSERVATION EQUIPMENT CO., LTD. |
|
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
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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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: HAOTIAN ENERGY CONSERVATION EQUIPMENT CO., LTD. TO: HAOTIAN SAVING EQUIPMENT CO., LTD. |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
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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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
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. |