CN105526438A - Joint end structure of composite heat-insulating pipes and construction method of joint end structure - Google Patents
Joint end structure of composite heat-insulating pipes and construction method of joint end structure Download PDFInfo
- Publication number
- CN105526438A CN105526438A CN201610062052.0A CN201610062052A CN105526438A CN 105526438 A CN105526438 A CN 105526438A CN 201610062052 A CN201610062052 A CN 201610062052A CN 105526438 A CN105526438 A CN 105526438A
- Authority
- CN
- China
- Prior art keywords
- hdpe
- oversheath
- hot melt
- ring
- joint
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/10—Adhesive or cemented joints
- F16L13/103—Adhesive joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints
- F16L59/20—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints for non-disconnectable joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention relates to the field of pipeline maintenance, in particular to a joint end structure of composite heat-insulating pipes. The joint end structure of the composite heat-insulating pipes comprises the steel pipes, high-density polyethylene (HDPE) outer sheaths and foamed heat-insulating layers, wherein the steel pipes are in butt joint, the steel pipes in butt joint are sleeved with the HDPE outer sheaths, and the foamed heat-insulating layers are arranged between the steel pipes and the HDPE outer sheaths. The joint end structure of the composite heat-insulating pipes is characterized in that the joint end structure further comprises HDPE hot-melting rings and an HDPE electric-melting outer sheath; the number of the HDPE hot-melting rings is two, and the two ends of a joint of the two steel pipes in butt joint are sleeved with the two HDPE hot-melting rings respectively, and the joint of the steel pipes in butt joint and the HDPE hot-melting rings at the two ends of the joint are wrapped with the HDPE electric-melting outer sheath. According to the joint end structure, the HDPE hot-melting rings below the HDPE electric-melting outer sheath can be molten by heating the HDPE electric-melting outer sheath, so that the joint of the heat-insulating pipes is reliably sealed and wrapped by the HDPE electric-melting outer sheath, and accordingly the joint is prevented from being corroded.
Description
Technical field
The present invention relates to pipe-line maintenance maintenance field, specifically a kind of tip side structure of compound thermal insulating pipe and method of construction thereof.
Background technique
With regard to thermal insulation pipe itself, thermal insulation property can reach designing requirement, because seal completely between HDPE oversheath and thick-walled seamless steel pipes, when being laid in underground, underground water cannot permeate, and can not destroy heat insulating stuffing further, and then produces corrosion failure to insulation pipe.
Summary of the invention
The object of the invention is to, provide a kind of tip side structure of compound thermal insulating pipe, it significantly can improve the construction quality of thermal insulation pipe Butt Section.
In order to achieve the above object, the present invention is achieved in that
A kind of tip side structure of compound thermal insulating pipe it comprise docking steel pipe, be enclosed within HDPE oversheath outside docking steel pipe and the insulating foam layer be located between steel pipe and HDPE oversheath; It is characterized in that: also comprise HDPE hot melt ring and HDPE electric heating melting oversheath, described HDPE hot melt ring has two, be placed on the seam two ends of the steel pipe of docking respectively, HDPE electric heating melting oversheath is wrapped in the seam crossing of docking steel pipe and is wrapped up by the HDPE hot melt ring at seam crossing two ends.
The method of construction of described end structure, is characterized in that: comprise
Step 1, before carrying out electric smelting HDPE oversheath and be coated, by anticorrosion to the surface of original insulation pipe, steel tube surface, clean;
Step 2, cleaned after, use HDPE hot melt rod on original pipeline, makes a ring, shape is similar to water-proof wing-ring;
Step 3, to carry out electric smelting HDPE oversheath coated, caking, and when bonding, HDPE hot melt rod can melt;
Step 4, carry out pressure test, guarantee there is no pressure leakages in electric smelting HDPE oversheath;
Step 5, thermal insulation foaming are filled;
Wherein, when carry out step 3, while electric smelting HDPE oversheath, HDPE hot melt rod ring heating roastingization that will originally add, has reached the effect of multiple adhering and sealing.
This tip side structure by heating HDPE electric heating melting oversheath, and then makes the HDPE hot melt ring below it melt, thus makes HDPE point hot melt oversheath reliably by thermal insulation pipe seam crossing sealed envelope, and then avoids being corroded herein.
Accompanying drawing explanation
Fig. 1 is the structural representation of this tip side.
Embodiment
The present invention is further illustrated below by way of specific embodiment.
As shown in Figure 1, a kind of compound thermal insulating pipe tip side structure it comprise docking steel pipe 1, be enclosed within HDPE oversheath 2 outside docking steel pipe 1 and the insulating foam layer 3 be located between steel pipe 1 and HDPE oversheath 2; Also comprise HDPE hot melt ring 4 and HDPE electric heating melting oversheath 5, described HDPE hot melt ring 4 has two, be placed on the seam two ends of the steel pipe 1 of docking respectively, HDPE electric heating melting oversheath 5 is wrapped in the seam crossing of docking steel pipe 1 and is wrapped up by the HDPE hot melt ring 4 at seam crossing two ends.
This tip side structure by heating HDPE electric heating melting oversheath 5, and then makes the HDPE hot melt ring 4 below it melt, thus makes HDPE point hot melt oversheath 5 reliably by steel pipe 1 seam crossing sealed envelope, and then avoids being corroded herein.
The method of construction of this tip side structure is as follows:
Step 1, before carrying out electric smelting HDPE oversheath 5 and be coated, by anticorrosion to the surface of original insulation pipe, steel tube surface, clean;
Step 2, cleaned after, use HDPE hot melt rod on original pipeline, makes a ring, shape is similar to water-proof wing-ring;
Step 3, carry out electric smelting HDPE oversheath bag 5 and cover, bonding, when bonding, HDPE hot melt rod can melt;
Step 4, carry out pressure test, guarantee there is no pressure leakages in electric smelting HDPE oversheath 5;
Step 5, thermal insulation foaming are filled.
Wherein, when carrying out the 3rd step, while electric smelting HDPE oversheath, HDPE hot melt rod ring heating roastingization that will originally add, has reached the effect of multiple adhering and sealing.
Claims (2)
1. a tip side structure for compound thermal insulating pipe, the steel pipe that it comprises docking, the insulating foam layer being enclosed within the HDPE oversheath outside docking steel pipe and being located between steel pipe and HDPE oversheath; It is characterized in that: also comprise HDPE hot melt ring and HDPE electric heating melting oversheath, described HDPE hot melt ring has two, be placed on the seam two ends of the steel pipe of docking respectively, HDPE electric heating melting oversheath is wrapped in the seam crossing of docking steel pipe and is wrapped up by the HDPE hot melt ring at seam crossing two ends.
2. a method of construction for end structure described in claim 1, is characterized in that: comprise
Step 1, before carrying out electric smelting HDPE oversheath and be coated, by anticorrosion to the surface of original insulation pipe, steel tube surface, clean;
Step 2, cleaned after, use HDPE hot melt rod on original pipeline, makes a ring, shape is similar to water-proof wing-ring;
Step 3, to carry out electric smelting HDPE oversheath coated, caking, and when bonding, HDPE hot melt rod can melt;
Step 4, carry out pressure test, guarantee there is no pressure leakages in electric smelting HDPE oversheath;
Step 5, thermal insulation foaming are filled;
Wherein, when carry out step 3, while electric smelting HDPE oversheath, HDPE hot melt rod ring heating roastingization that will originally add, has reached the effect of multiple adhering and sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062052.0A CN105526438A (en) | 2016-01-29 | 2016-01-29 | Joint end structure of composite heat-insulating pipes and construction method of joint end structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062052.0A CN105526438A (en) | 2016-01-29 | 2016-01-29 | Joint end structure of composite heat-insulating pipes and construction method of joint end structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105526438A true CN105526438A (en) | 2016-04-27 |
Family
ID=55768843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610062052.0A Pending CN105526438A (en) | 2016-01-29 | 2016-01-29 | Joint end structure of composite heat-insulating pipes and construction method of joint end structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105526438A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468939A (en) * | 2019-07-16 | 2019-11-19 | 嵊州市越通非开挖建设有限公司 | A kind of concrete reinforcement for seal for pipe joints junction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200836U (en) * | 1987-01-23 | 1988-04-13 | 哈尔滨市塑料四厂 | Hot-melt connective sheath of amticorrosion and heat preservation |
| JPH11201380A (en) * | 1998-01-12 | 1999-07-30 | Mesco Inc | Heat insulated water supply pipe |
| US20130285366A1 (en) * | 2010-10-22 | 2013-10-31 | Shawcor Ltd. | Non-crosslinked shrinkable casing member for forming a connection between tubular sections and method of forming said connection by induction fusion |
| CN103574231A (en) * | 2013-11-06 | 2014-02-12 | 北京豪特耐管道设备有限公司 | Construction method for thermal insulation of thermal insulation pipeline joint |
| CN203979777U (en) * | 2014-08-08 | 2014-12-03 | 青岛泰能科技实业发展有限公司 | A kind of PE cover steel thermal pipe repaired mouth structure |
| CN104896216A (en) * | 2014-03-06 | 2015-09-09 | 文安上元中宇科技有限公司 | High-density polyethylene corrugated outer protection pipe and double pipe heat insulation pipeline |
-
2016
- 2016-01-29 CN CN201610062052.0A patent/CN105526438A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200836U (en) * | 1987-01-23 | 1988-04-13 | 哈尔滨市塑料四厂 | Hot-melt connective sheath of amticorrosion and heat preservation |
| JPH11201380A (en) * | 1998-01-12 | 1999-07-30 | Mesco Inc | Heat insulated water supply pipe |
| US20130285366A1 (en) * | 2010-10-22 | 2013-10-31 | Shawcor Ltd. | Non-crosslinked shrinkable casing member for forming a connection between tubular sections and method of forming said connection by induction fusion |
| CN103574231A (en) * | 2013-11-06 | 2014-02-12 | 北京豪特耐管道设备有限公司 | Construction method for thermal insulation of thermal insulation pipeline joint |
| CN104896216A (en) * | 2014-03-06 | 2015-09-09 | 文安上元中宇科技有限公司 | High-density polyethylene corrugated outer protection pipe and double pipe heat insulation pipeline |
| CN203979777U (en) * | 2014-08-08 | 2014-12-03 | 青岛泰能科技实业发展有限公司 | A kind of PE cover steel thermal pipe repaired mouth structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468939A (en) * | 2019-07-16 | 2019-11-19 | 嵊州市越通非开挖建设有限公司 | A kind of concrete reinforcement for seal for pipe joints junction |
| CN110468939B (en) * | 2019-07-16 | 2021-04-20 | 嵊州市越通非开挖建设有限公司 | Concrete reinforcing method for pipeline sealing joint |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160427 |
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| WD01 | Invention patent application deemed withdrawn after publication |