CN202660163U - Joint structure of sealing-type prefabricated direct-buried thermal pipes of thermal contraction belt - Google Patents
Joint structure of sealing-type prefabricated direct-buried thermal pipes of thermal contraction belt Download PDFInfo
- Publication number
- CN202660163U CN202660163U CN 201220250434 CN201220250434U CN202660163U CN 202660163 U CN202660163 U CN 202660163U CN 201220250434 CN201220250434 CN 201220250434 CN 201220250434 U CN201220250434 U CN 201220250434U CN 202660163 U CN202660163 U CN 202660163U
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- prefabricated direct
- high density
- density polyethylene
- buried thermal
- sealing
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Abstract
The utility model discloses a joint structure of sealing-type prefabricated direct-buried thermal pipes of a thermal contraction belt. A working steel pipe is arranged between two sealing-type prefabricated direct-buried thermal pipes, a high density polyethylene sleeve pipe is sleeved outside the working steel pipe, opposite ends of the two sealing-type prefabricated direct-buried thermal pipes are coated at two ends of the high density polyethylene sleeve pipe. Polyurethane foam is filled between the working steel pipe and the high density polyethylene sleeve pipe, and the thermal contraction belt is used to seal the joint portion of the end portion of the high density polyethylene sleeve pipe and the end portion of the sealing-type prefabricated direct-buried thermal pipes. The thermal contraction belt is used to seal the joint portion of the end portion of the high density polyethylene sleeve pipe and the end portion of the sealing-type prefabricated direct-buried thermal pipes and then the polyurethane foam is filled between the working steel pipe and the high density polyethylene sleeve pipe so as to ensure thermal performance and sealing performance of a joint of the sealing-type prefabricated direct-buried thermal pipes, increase stability of a pipe network and prolong service life of the pipe network.
Description
Technical field
The utility model relates to a kind of joint structure, relates in particular to a kind of prefabricated direct-buried thermal insulation pipe joint structure of shrink belt sealed type.
Background technique
Prefabricated direct-buried thermal insulation pipe is widely used in the conveying of high-temp liquid, is a kind of good heat insulating, low, the safe and reliable engineering material of engineering cost.Prefabricated direct-buried thermal insulation pipe not only has advanced technology, the practicability that traditional trench and built on stilts channelling hardly match, but also has significant Social benefit and economic benefit, also is the effective measure of heating energy-saving.
In actual applications, the joint thermal insulating material of engineering site is generally glass wool and adds glass fibre cloth, rock wool, perlite etc.Because the intensity of above material is less, cause the joint bearing capacity relatively poor, under the frictional force effect that soil gravity and piping displacement produce, the joint thermal insulation layer destroys easily; Simultaneously, the sealing of joint is relatively poor, under the soil wet environment, easily causes corrosion and further destruction of joint pipeline, affects construction quality.Thereby, become the weak link in the prefabricated direct-buried thermal insulation pipe net, had a strong impact on stability and the working life of pipe network.
The model utility content
The utility model provides a kind of prefabricated direct-buried thermal insulation pipe joint structure of shrink belt sealed type for the drawback of prior art.
The prefabricated direct-buried thermal insulation pipe joint structure of shrink belt sealed type described in the utility model, comprise two sections adjacent prefabricated direct-buried thermal insulation pipes, be provided with working steel tube between described two sections prefabricated direct-buried thermal insulation pipes, be arranged with high density polyethylene (HDPE) cover sleeve outside the described working steel tube, and the two ends of described high density polyethylene (HDPE) cover sleeve cover respectively the relative end of two sections prefabricated direct-buried thermal insulation pipes; Between described working steel tube and high density polyethylene (HDPE) cover sleeve, be filled with polyurethane foam; The engaged at end place of described high density polyethylene (HDPE) oversleeve tube end and prefabricated direct-buried thermal insulation pipe adopts the shrink belt sealing.
In the prefabricated direct-buried thermal insulation pipe joint structure of shrink belt sealed type described in the utility model, adopt high density polyethylene (HDPE) cover sleeve as the joint external protective material, and seal with the junction point of shrink belt to this high density polyethylene (HDPE) cover sleeve and prefabricated direct-buried thermal insulation pipe, overlap filled polyurethane foam between sleeve and the working steel tube at high density polyethylene (HDPE) again, give full play to the excellent properties of polyurethane foam and high density polyethylene (HDPE) cover sleeve, guarantee thermal insulation property and the sealability of prefabricated direct-buried thermal insulation pipe joint, increased stability and the working life of pipe network.
Description of drawings
Fig. 1 is the cross-sectional schematic of the prefabricated direct-buried thermal insulation pipe joint structure of shrink belt sealed type described in the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, can implements according to this with reference to the specification literal to make those skilled in the art.
As shown in Figure 1, the prefabricated direct-buried thermal insulation pipe joint structure of shrink belt sealed type described in the utility model, comprise adjacent two sections prefabricated direct-buried thermal insulation pipes 1,6, for these adjacent two sections prefabricated direct-buried thermal insulation pipes 1,6 are welded and seal, in the utility model, between described two sections prefabricated direct-buried thermal insulation pipes 1,6, be provided with working steel tube 5, outside the described working steel tube 5 then cover high density polyethylene (HDPE) cover sleeve 3 is arranged, the two ends of this high density polyethylene (HDPE) cover sleeve 3 cover respectively two sections prefabricated direct-buried thermal insulation pipes 1,6 relative end.The junction point employing shrink belt 2 of described high density polyethylene (HDPE) cover sleeve 3 ends and prefabricated direct-buried thermal insulation pipe 1,6 end seals; Be filled with polyurethane foam 4 in the space between described working steel tube 5 and high density polyethylene (HDPE) cover sleeve 3.
The water vapour permeability of described high density polyethylene (HDPE) cover sleeve and shrink belt is low, and good sealing effect can tolerate 70 degrees centigrade ambient temperature, can also bear to a certain extent the abominable working condition of unusual water soaking in the trench and substantially keeps original performance.And the foam of using polyurethane foam and direct-buried insulated pipe joint joins, and does not leak hot slit, has guaranteed heat insulation effect.
In the prefabricated direct-buried thermal insulation pipe joint structure of shrink belt sealed type described in the utility model, adopt high density polyethylene (HDPE) cover sleeve as the joint external protective material, and seal with the junction point of shrink belt to this high density polyethylene (HDPE) cover sleeve and prefabricated direct-buried thermal insulation pipe, overlap filled polyurethane foam between sleeve and the working steel tube at high density polyethylene (HDPE) again, give full play to the excellent properties of polyurethane foam and high density polyethylene (HDPE) cover sleeve, guarantee thermal insulation property and the sealability of prefabricated direct-buried thermal insulation pipe joint, increased stability and the working life of pipe network.
Although embodiment of the present utility model is open as above, but it is not restricted to listed utilization in specification and the mode of execution, it can be applied to the various fields of the present utility model that are fit to fully, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend of describing.
Claims (1)
1. the prefabricated direct-buried thermal insulation pipe joint structure of a shrink belt sealed type, comprise two sections adjacent prefabricated direct-buried thermal insulation pipes, it is characterized in that, be provided with working steel tube between described two sections prefabricated direct-buried thermal insulation pipes, be arranged with high density polyethylene (HDPE) cover sleeve outside the described working steel tube, and the two ends of described high density polyethylene (HDPE) cover sleeve cover respectively the relative end of two sections prefabricated direct-buried thermal insulation pipes; Between described working steel tube and high density polyethylene (HDPE) cover sleeve, be filled with polyurethane foam; The engaged at end place of described high density polyethylene (HDPE) oversleeve tube end and prefabricated direct-buried thermal insulation pipe adopts the shrink belt sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250434 CN202660163U (en) | 2012-05-30 | 2012-05-30 | Joint structure of sealing-type prefabricated direct-buried thermal pipes of thermal contraction belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250434 CN202660163U (en) | 2012-05-30 | 2012-05-30 | Joint structure of sealing-type prefabricated direct-buried thermal pipes of thermal contraction belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202660163U true CN202660163U (en) | 2013-01-09 |
Family
ID=47455072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220250434 Expired - Lifetime CN202660163U (en) | 2012-05-30 | 2012-05-30 | Joint structure of sealing-type prefabricated direct-buried thermal pipes of thermal contraction belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202660163U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398267A (en) * | 2013-08-02 | 2013-11-20 | 北京豪特耐管道设备有限公司 | Thermal insulation pipe joint structure and construction method of thermal insulation pipe joint |
| CN107795795A (en) * | 2017-10-20 | 2018-03-13 | 北京市热力集团有限责任公司 | A kind of live insulation construction and construction method of prefabricated thermal insulation straight tube and special piece |
| CN111033111A (en) * | 2018-01-31 | 2020-04-17 | 普里亚克·S·加格 | Pre-insulated valve for fluid system |
-
2012
- 2012-05-30 CN CN 201220250434 patent/CN202660163U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398267A (en) * | 2013-08-02 | 2013-11-20 | 北京豪特耐管道设备有限公司 | Thermal insulation pipe joint structure and construction method of thermal insulation pipe joint |
| CN107795795A (en) * | 2017-10-20 | 2018-03-13 | 北京市热力集团有限责任公司 | A kind of live insulation construction and construction method of prefabricated thermal insulation straight tube and special piece |
| CN111033111A (en) * | 2018-01-31 | 2020-04-17 | 普里亚克·S·加格 | Pre-insulated valve for fluid system |
| KR20200113183A (en) * | 2018-01-31 | 2020-10-06 | 프리얀크 에스 가그 | Pre-isolated valves for fluid systems |
| EP3662194A4 (en) * | 2018-01-31 | 2021-04-21 | Garg, Priyank S. | Pre-insulated valves for fluid system |
| US11692637B2 (en) | 2018-01-31 | 2023-07-04 | Priyank S. Garg | Pre-insulated valves for fluid system |
| KR102559508B1 (en) | 2018-01-31 | 2023-07-26 | 프리얀크 에스 가그 | Pre-insulated valves for fluid systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |