CN203979777U - A kind of PE cover steel thermal pipe repaired mouth structure - Google Patents
A kind of PE cover steel thermal pipe repaired mouth structure Download PDFInfo
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- CN203979777U CN203979777U CN201420446077.7U CN201420446077U CN203979777U CN 203979777 U CN203979777 U CN 203979777U CN 201420446077 U CN201420446077 U CN 201420446077U CN 203979777 U CN203979777 U CN 203979777U
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Abstract
The utility model discloses a kind of PE cover steel thermal pipe repaired mouth structure; comprise that two ends are provided with the heat molten type PE cover of electric heating fuse; heat molten type PE cover is connected on the PE outer tube of thermal pipe of docking by electric heating fuse hot melt; heat molten type PE cover and thermal pipe stretch out PE outer tube steel pipe between be provided with polyurethane foam; heat molten type PE cover is enclosed with pyrocondensation belt with PE outer tube joint; heat molten type PE cover arranged outside has the sealing layer of flexible material, and sealing layer arranged outside has the protective layer of glass steel material.The beneficial effect of this programme can be learnt according to the narration to such scheme, simple in structure, reasonable in design; Can prevent infiltration and prevent that sharp object from destroying repaired mouth structure generation.
Description
Technical field
The utility model relates to a kind of heat distribution pipeline structure, relates in particular to a kind of PE cover steel thermal pipe repaired mouth structure.
Background technique
Heat distribution pipeline is the main thermal source transfer passage of realizing cities and towns central heat supply, and what its inside delivered mostly is the heat energy such as steam or superheated water medium, and medium temperature is high, pressure is large, flow velocity is fast, in the time of operation, can bring larger expansive force and impact force to pipeline.At present, the heat distribution pipeline in the most cities and towns of China is all taked buried operation, and pipeline is PE(polyethylene) cover steel structure, carries out pipe insulation by the method for inner filling-foam polyurethane.The steel pipe of this structure is compared asbestos insulation pipe, there is environmental protection, intensity is high, quality is light, compare steel sleeve steel structure and have the advantages that quality is light, corrosion-resistant, cost is low, but PE cover steel produces the but appearance again and again of situation of breaking at repaired mouth place in actual use, affect greatly the working life of this type of heat distribution pipeline.
Existing repaired mouth structure as shown in Figure 1, first adopt heat to melt the PE outer tube that type PE plate snaps into both sides to be coated, to bond the jointing of the exposed steel pipe of heat distribution pipeline is general, reserved circular inlet in the above, then the filling of the space between itself and steel pipe polyurethane foam is filled, and finally with rubber stopper, inlet is blocked.
The deficiency of the method mainly contain following some:
1. inlet belongs to protection weak spot, easily causes infiltration;
2. high-temp liquid causes that pipeline axial extends, and pyrocondensation belt and heat molten type PE interface position are easily ftractureed by shearing force effect, cause infiltration;
3. after moisture infiltrates polyurethane foam, once be subject to high-temperature steel tube baking, can produce a large amount of water vapour, steam is assembled pressure and is increased, and accelerating interface crack velocity, even can burst PE material.
This frequently damages repaired mouth place, often need to carry out maintain and replace, and the manpower, material resources and financial resources of Thermal Corp have been produced to greatly waste.
Model utility content
The utility model is for the existing deficiency of prior art, and provides a kind of simple in structure, reasonable in design, can prevent infiltration and prevent the PE cover steel thermal pipe repaired mouth structure that sharp object destroys repaired mouth structure generation.
To achieve these goals, the utility model provides a kind of PE cover steel thermal pipe repaired mouth structure, comprise that two ends are provided with the heat molten type PE cover of electric heating fuse, described heat molten type PE cover is connected on the PE outer tube of described thermal pipe of docking by described electric heating fuse hot melt, described heat molten type PE cover and described thermal pipe stretch out described PE outer tube steel pipe between be provided with polyurethane foam; Described heat molten type PE cover is enclosed with pyrocondensation belt with described PE outer tube joint, and described heat molten type PE cover arranged outside has the sealing layer of flexible material, and described sealing layer arranged outside has the protective layer of glass steel material.
Preferably, described sealing layer comprises being arranged at and is positioned at the annular boss of described PE outer tube near described heat molten type PE cover two ends place, also being provided with fiber reinforced pyrocondensation belt two wraps described boss described heat molten type PE cover is isolated from the outside, described pyrocondensation belt two arranged outside are useful on the protective cloth that prevents that pyrocondensation belt two from expanding, and the arranged outside that the two ends of described protective cloth and pyrocondensation belt two are positioned at described boss is useful on the Stainless Steel Band of tightening.
Another is preferred, and described sealing layer comprises the jacket casing of ethylene-propylene diene copolymer material, and described jacket casing two ends are provided with Stainless Steel Band and are fixed on the PE outer tube near described heat molten type PE cover two ends by described Stainless Steel Band.
Preferably, described protective layer comprises the sleeve of glass steel material, and the hollow sealing circle that is provided with filling polyurethane foam or silicone oil between described sleeve two ends and described PE outer tube makes the isolation of sleeve interior or exterior space.
Another is preferred, and described protective layer comprises the sleeve of glass steel material, and described sleeve two ends bore shrinks with described PE outer tube and is connected to form protective housing.
The beneficial effect of this programme can be learnt according to the narration to such scheme, simple in structure, reasonable in design; Can prevent infiltration and prevent that sharp object from destroying repaired mouth structure generation.Boss is set, and is in order to make pyrocondensation belt dimorphism become the sealing configuration of oversleeve type; Protective cloth is set, and is in order to prevent that pyrocondensation belt two is subject to the raw overexpansion of interior Hair Fixer.During another is preferred, adopt the jacket casing of ethylene-propylene diene copolymer material, two fixedly seals with Stainless Steel Band, to make because ethylene-propylene diene copolymer is that main raw material(s) is synthetic by ethene and propylene, ageing-resistant performance is good, at 120 DEG C, can use for a long time, can reach 15 years the working life under normal state.Ethylene-propylene diene copolymer also has excellent resistance to steam (230 DEG C, 100h, outward appearance is unchanged) and heat resistance, resistance to superheated water performance also better (has evidence, in 125 DEG C of hot water, soak after 15 months, mechanical property changes very little, and specific volumetric dilatation is only 0.3%), in addition, its elasticity and sealability are also better, are applicable to very much the working environment of thermal pipe.It is that sharp object in order to prevent outside landfill and pressure destroy repaired mouth structure generation that employing arranges glass fibre reinforced plastics sleeve, and two ends adopt the method for hollow sealing circle filling polyurethane foam or silicone oil, can form second sealing layer, further ensure sealing effect; Or shrink at glass fibre reinforced plastics sleeve two ends, form rigid protection cover structure.
Brief description of the drawings
Fig. 1 is the structural representation of PE cover steel thermal pipe repaired mouth structure in prior art;
Fig. 2 is the utility model embodiment embodiment 1 structural representation;
Fig. 3 is the utility model embodiment embodiment 2 structural representation;
In figure, 1, heat molten type PE cover; 2, electric heating fuse; 3, PE outer tube; 4, steel pipe; 5, polyurethane foam; 6, pyrocondensation belt; 7, seal ring; 8, jacket casing; 9, boss; 10, pyrocondensation belt two; 11, protective cloth; 12, Stainless Steel Band; 13, sleeve.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by embodiment, this programme is set forth.
Embodiment 1
As shown in Figure 2; the utility model is a kind of PE cover steel thermal pipe repaired mouth structure; comprise that two ends are provided with the heat molten type PE cover 1 of electric heating fuse; heat molten type PE cover 1 is connected on the PE outer tube 3 of thermal pipe of docking by electric heating fuse 2 hot melts; heat molten type PE cover 1 and thermal pipe stretch out PE outer tube 3 steel pipe 4 between be provided with polyurethane foam 5; heat molten type PE cover 1 is enclosed with pyrocondensation belt 6 with PE outer tube 3 joints; heat molten type PE overlaps 1 arranged outside the sealing layer of flexible material, and sealing layer arranged outside has the protective layer of glass steel material.
Sealing layer comprises and is arranged at the annular boss 9 that is positioned at PE outer tube 3 and overlaps near heat molten type PE 1 two ends place, also being provided with fiber reinforced pyrocondensation belt 2 10 wraps boss 9 heat molten type PE cover 1 is isolated from the outside, pyrocondensation belt 2 10 arranged outside are useful on the protective cloth 11 that prevents that pyrocondensation belt 2 10 from expanding, and the arranged outside that the two ends of protective cloth 11 and pyrocondensation belt 2 10 are positioned at boss 9 is useful on the Stainless Steel Band 12 of tightening.
Protective layer comprises the sleeve 13 of glass steel material, and the hollow sealing circle 7 that is provided with filling polyurethane foam or silicone oil between sleeve 13 two ends and PE outer tube 3 makes sleeve 13 interior or exterior space isolation.
Embodiment 2
As shown in Figure 3; the utility model is a kind of PE cover steel thermal pipe repaired mouth structure; comprise that two ends are provided with the heat molten type PE cover 1 of electric heating fuse; heat molten type PE cover 1 is connected on the PE outer tube 3 of thermal pipe of docking by electric heating fuse 2 hot melts; heat molten type PE cover 1 and thermal pipe stretch out PE outer tube 3 steel pipe 4 between be provided with polyurethane foam 5; heat molten type PE cover 1 is enclosed with pyrocondensation belt 6 with PE outer tube 3 joints; heat molten type PE overlaps 1 arranged outside the sealing layer of flexible material, and sealing layer arranged outside has the protective layer of glass steel material.
Sealing layer comprises the jacket casing 8 of ethylene-propylene diene copolymer material, jacket casing 8 two ends be provided with stainless steel 12 with and be fixed on and overlap on the PE outer tube 3 at 1 two ends near heat molten type PE by Stainless Steel Band 12.
Protective layer comprises the sleeve 13 of glass steel material, and sleeve 13 two ends bores shrink with PE outer tube 3 and are connected to form protective housing.
The utility model can pass through or adopt existing techniques in realizing without the technical characteristics of describing; do not repeat them here; certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example; variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present utility model, also should belong to protection domain of the present utility model.
Claims (5)
1. a PE cover steel thermal pipe repaired mouth structure, comprise that two ends are provided with the heat molten type PE cover of electric heating fuse, described heat molten type PE cover is connected on the PE outer tube of described thermal pipe of docking by described electric heating fuse hot melt, described heat molten type PE cover and described thermal pipe stretch out described PE outer tube steel pipe between be provided with polyurethane foam; Described heat molten type PE cover is enclosed with pyrocondensation belt with described PE outer tube joint, it is characterized in that, described heat molten type PE cover arranged outside has the sealing layer of flexible material, and described sealing layer arranged outside has the protective layer of glass steel material.
2. PE cover steel thermal pipe repaired mouth structure according to claim 1, it is characterized in that, described sealing layer comprises being arranged at and is positioned at the annular boss of described PE outer tube near described heat molten type PE cover two ends place, also being provided with fiber reinforced pyrocondensation belt two wraps described boss described heat molten type PE cover is isolated from the outside, described pyrocondensation belt two arranged outside are useful on the protective cloth that prevents that pyrocondensation belt two from expanding, and the arranged outside that the two ends of described protective cloth and pyrocondensation belt two are positioned at described boss is useful on the Stainless Steel Band of tightening.
3. PE cover steel thermal pipe repaired mouth structure according to claim 1, it is characterized in that, described sealing layer comprises the jacket casing of ethylene-propylene diene copolymer material, and described jacket casing two ends are provided with Stainless Steel Band and are fixed on the PE outer tube near described heat molten type PE cover two ends by described Stainless Steel Band.
4. according to the PE cover steel thermal pipe repaired mouth structure described in claim 1 or 2 or 3; it is characterized in that; described protective layer comprises the sleeve of glass steel material, and the hollow sealing circle that is provided with filling polyurethane foam or silicone oil between described sleeve two ends and described PE outer tube makes the isolation of sleeve interior or exterior space.
5. according to the PE cover steel thermal pipe repaired mouth structure described in claim 1 or 2 or 3, it is characterized in that, described protective layer comprises the protective housing of glass steel material, and described protective housing two ends bore shrinks and is connected with described PE outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420446077.7U CN203979777U (en) | 2014-08-08 | 2014-08-08 | A kind of PE cover steel thermal pipe repaired mouth structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420446077.7U CN203979777U (en) | 2014-08-08 | 2014-08-08 | A kind of PE cover steel thermal pipe repaired mouth structure |
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| CN203979777U true CN203979777U (en) | 2014-12-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526438A (en) * | 2016-01-29 | 2016-04-27 | 上海宝冶集团有限公司 | Joint end structure of composite heat-insulating pipes and construction method of joint end structure |
| CN105927803A (en) * | 2016-07-19 | 2016-09-07 | 华电青岛热力有限公司 | Installation method of waterproof-type electric-melting heat-preservation joint |
| CN105953015A (en) * | 2016-07-19 | 2016-09-21 | 华电青岛热力有限公司 | Waterproof type electric hot-melting insulation joint |
-
2014
- 2014-08-08 CN CN201420446077.7U patent/CN203979777U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526438A (en) * | 2016-01-29 | 2016-04-27 | 上海宝冶集团有限公司 | Joint end structure of composite heat-insulating pipes and construction method of joint end structure |
| CN105927803A (en) * | 2016-07-19 | 2016-09-07 | 华电青岛热力有限公司 | Installation method of waterproof-type electric-melting heat-preservation joint |
| CN105953015A (en) * | 2016-07-19 | 2016-09-21 | 华电青岛热力有限公司 | Waterproof type electric hot-melting insulation joint |
| CN105953015B (en) * | 2016-07-19 | 2019-04-02 | 华电青岛热力有限公司 | A kind of water-proof type electric heating melting thermal insulation joint |
| CN105927803B (en) * | 2016-07-19 | 2019-05-17 | 华电青岛热力有限公司 | A kind of water-proof type electric heating melting thermal insulation joint installation method |
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Effective date of registration: 20210618 Granted publication date: 20141203 |
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