CN204226961U - The heat insulation structure of polyvinyl fuel gas pipeline - Google Patents
The heat insulation structure of polyvinyl fuel gas pipeline Download PDFInfo
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- CN204226961U CN204226961U CN201420653374.9U CN201420653374U CN204226961U CN 204226961 U CN204226961 U CN 204226961U CN 201420653374 U CN201420653374 U CN 201420653374U CN 204226961 U CN204226961 U CN 204226961U
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- insulating pipe
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Abstract
The utility model discloses a kind of heat insulation structure of polyvinyl fuel gas pipeline, comprise one group and be embedded in the heat distribution pipeline in soil and be parallel to each other with it or the polyvinyl fuel gas pipeline of delivery of fuel gas medium that square crossing is laid; A coated thermal-insulating pipe case on polyvinyl fuel gas pipeline.Described thermal-insulating pipe case length direction is spliced mutually by the above cell cube thermal-insulating pipe case of two joints; Each cell cube thermal-insulating pipe case is formed by the little halfbody thermal-insulating pipe case docking of two halfbodies or more than three.Under its security context that can be not more than 40 DEG C or lower temperature in guarantee gas pipeline peripheral temperature, net level length and the vertical clearance of polyvinyl fuel gas pipeline and heat distribution pipeline can be shortened.
Description
Technical field
The utility model belongs to gas pipeline field of engineering technology, is specifically related to a kind of heat insulation structure laying polyvinyl fuel gas pipeline.
Background technique
When People's Republic of China (PRC) professional standard CJJ 63-2008 " polyvinyl fuel gas pipeline engineering code " defines and arranges underground polyvinyl fuel gas pipeline, underground polyvinyl fuel gas pipeline should and heat distribution pipeline between net level length and vertical clearance should not be less than specific value, and should guarantee that gas pipeline surrounding soil temperature is not more than 40 DEG C.
But in Practical Project, because pipeline various in community is more, and the space that can lay the line is less, therefore, when arranging polyvinyl fuel gas pipeline, the net level length of fuel gas polyethylene pipeline and heating pipeline parallel lay-up is difficult to ensure; Meanwhile, because heating pipeline earthing is generally 1.0 meters, fuel gas polyethylene pipeline thickness of earth covering is not less than 0.9 meter under motorway, under non-motorway (containing walk), must not be less than 0.6 meter, and vertical clearance when laying that intersects is difficult to ensure.Therefore, in order to meet the requirement of above-mentioned spacing and earthing, often polyethylene tube steel can be moulded crossover sub and be converted to steel pipe by designer, and polyethylene pipe antiseptic property is excellent, the advantage of long service life just cannot effectively utilize; If in intersection place ungratified with parallel clear distance, with steel pipe, other place polyethylene pipes, then the integrity of pipe-line system is destroyed again.
Summary of the invention
The purpose of this utility model is to provide a kind of heat insulation structure laying polyvinyl fuel gas pipeline, it can solve the problem of prior art, under the security context that guarantee gas pipeline peripheral temperature is not more than 40 DEG C or lower temperature, net level length and the vertical clearance of polyvinyl fuel gas pipeline and heat distribution pipeline can be shortened.
For achieving the above object, the utility model takes following design proposal:
A heat insulation structure for polyvinyl fuel gas pipeline, comprises one group and is embedded in the heat distribution pipeline in soil and is parallel to each other with it or the polyvinyl fuel gas pipeline of delivery of fuel gas medium that square crossing is laid; A coated thermal-insulating pipe case on polyvinyl fuel gas pipeline.
In the heat insulation structure of described polyvinyl fuel gas pipeline, described thermal-insulating pipe case length direction is spliced mutually by the above cell cube thermal-insulating pipe case of two joints; Each cell cube thermal-insulating pipe case is formed by the little halfbody thermal-insulating pipe case docking of two halfbodies or more than three.
In the heat insulation structure of described polyvinyl fuel gas pipeline, the independent Tenon that adopts engages separately between described each joint cell cube thermal-insulating pipe case and between the halfbody docked between two in described cell cube or little halfbody thermal-insulating pipe case, or adopts integral Tenon to engage.
In the heat insulation structure of described polyvinyl fuel gas pipeline, when adopting integral Tenon to engage between described each joint cell cube thermal-insulating pipe case and between the halfbody docked between two in described cell cube or little halfbody thermal-insulating pipe case, one length of the halfbody in described each cell cube or little halfbody thermal-insulating pipe case has mortise on docking end face, another is long to docking on end face with tenon, one side end face of this halfbody or little halfbody thermal-insulating pipe case has mortise, with tenon on opposite side end face, described two mortise UNICOMs (namely the long mortise opened on docking end face communicates with the mortise that a side end face has), described two tenons combine as a whole (namely another long on docking end face with tenon and opposite side end face on tenon combine as a whole).
In the heat insulation structure of described polyvinyl fuel gas pipeline, when one group of heat distribution pipeline and the mutual square crossing of polyvinyl fuel gas pipeline are laid, the segment length of thermal-insulating pipe case coated on described polyvinyl fuel gas pipeline to stretch out 1m from heating pipeline each two ends tube wall.
In the heat insulation structure of described polyvinyl fuel gas pipeline, a Cold winding band layer can be enclosed with in the periphery of thermal-insulating pipe case.
In the heat insulation structure of described polyvinyl fuel gas pipeline, thermal shrinkage waterproof cap can be added with in thermal-insulating pipe case two ends.
In the heat insulation structure of described polyvinyl fuel gas pipeline, insulation backplate together with can adding between heat distribution pipeline with polyvinyl fuel gas pipeline.
The utility model has the advantages that: can solve when Practical Project arranges fuel gas polyethylene pipeline, polyvinyl fuel gas pipeline and existing heat distribution pipeline intersect or parallel laid time when cannot meet the minimum level clear distance between embedded underground polyvinyl fuel gas pipeline and heat distribution pipeline or vertical clearance that CJJ 63-2008 " polyvinyl fuel gas pipeline engineering code " specifies, by adopting the technical solution of the utility model, polyvinyl fuel gas pipeline safe operation under peripheral temperature is not more than 40 DEG C or lower temperature can be ensured.
Accompanying drawing explanation
Fig. 1 a is the heat insulation structure one example structure schematic diagram (polyvinyl fuel gas pipeline buried underground and heat distribution pipeline are parallel to each other and lay) of the utility model polyvinyl fuel gas pipeline.
Fig. 1 b is the structural representation (A to) of Fig. 1 a illustrated embodiment.
Fig. 2 a is another example structure schematic diagram of heat insulation structure (polyvinyl fuel gas pipeline buried underground and the mutual square crossing of heat distribution pipeline are laid) of the utility model polyvinyl fuel gas pipeline.
Fig. 2 b is the structural representation (B to) of Fig. 2 a illustrated embodiment.
Fig. 3 is the utility model hard polyurethane foam thermal-insulating pipe case structural representation (three-dimensional view, two joint cell cube thermal-insulating pipe case docking compositions).
Fig. 4 a is the utility model hard polyurethane foam thermal-insulating pipe case structural representation (three-dimensional view, a halfbody thermal-insulating pipe case illustrate that its length direction one end is with tenon).
Fig. 4 b is the utility model hard polyurethane foam thermal-insulating pipe case structural representation (three-dimensional view, a halfbody thermal-insulating pipe case illustrate that its length direction one end is with mortise).
Fig. 4 c is the halfbody thermal-insulating pipe case structural representation (plan view) of the utility model hard polyurethane foam thermal-insulating pipe case.
Fig. 4 d is the halfbody thermal-insulating pipe case structural representation (side view) of the utility model hard polyurethane foam thermal-insulating pipe case.
Fig. 5 a is the another example structure schematic diagram of heat insulation structure (adding board-type insulation backplate) of the utility model polyvinyl fuel gas pipeline.
Fig. 5 b is a heat insulation structure example structure schematic diagram (adding arc insulation backplate) again of the utility model polyvinyl fuel gas pipeline.
Fig. 5 c is a heat insulation structure example structure schematic diagram (adding arc insulation backplate when the polyvinyl fuel gas pipeline buried underground and the mutual square crossing of heat distribution pipeline are laid) again of the utility model polyvinyl fuel gas pipeline.
In figure: 1. polyvinyl fuel gas pipeline; 2. heat distribution pipeline; 3. thermal-insulating pipe case; 301. tenon; 302. mortise; 4. Cold winding band layer; 5 '. board-type insulation backplate; 5. arc insulation backplate.
Below in conjunction with drawings and the specific embodiments, the utility model is described in further details.
Embodiment
Consult Fig. 1 a, Fig. 1 b, shown in Fig. 2 a and Fig. 2 b, the heat insulation structure main innovate point of the utility model polyvinyl fuel gas pipeline is: when Practical Project arranges the fuel gas polyethylene pipeline of delivery of fuel gas medium, polyvinyl fuel gas pipeline 1 and existing heat distribution pipeline 2 intersect or parallel laid time when cannot meet the minimum level clear distance between embedded underground polyvinyl fuel gas pipeline and heat distribution pipeline or vertical clearance that CJJ 63-2008 " polyvinyl fuel gas pipeline engineering code " specifies, sheathed thermal-insulating pipe case 3 (the general hard polyurethane foam that adopts makes) on polyvinyl fuel gas pipeline 1 body, further can be enclosed with a Cold winding band layer 4 again.
Described hard polyurethane foam thermal-insulating pipe case 3 is with hole-closing structure and the hard polyurethane foam selecting thermal conductivity (under 50 DEG C of states) to be less than or equal to 0.033W/ (mK) is good, can play insulation heat insulating function.For reaching heat insulation effect, it is good that the thickness of the hard polyurethane foam thermal-insulating pipe case 3 that the utility model polyvinyl fuel gas pipeline 1 body wraps up should be not less than 20mm thickness.
As shown in Fig. 2 a, Fig. 2 b, in concrete enforcement engineering, when one group of heat distribution pipeline 2 and when laying with the mutual square crossing of the polyvinyl fuel gas pipeline 1 of delivery of fuel gas medium, hard sleeve should be installed additional again outside the hard polyurethane foam thermal-insulating pipe case 3 of described polyvinyl fuel gas pipeline 1.
When one group of heat distribution pipeline 2 and square crossing is laid mutually with the polyvinyl fuel gas pipeline 1 of delivery of fuel gas medium time, the segment length of the hard polyurethane foam thermal-insulating pipe case that described polyvinyl fuel gas pipeline wraps up grows (see Fig. 2 b) from heating pipeline each two ends tube wall 1m that stretches out.
See Fig. 3, thermal-insulating pipe case 3 sheathed on polyvinyl fuel gas pipeline 1 body of the present invention can be mutually be spliced by the above cell cube thermal-insulating pipe case of two joints at length direction, each cell cube thermal-insulating pipe case can be again combined by the halfbody thermal-insulating pipe case of two docking, as shown in Fig. 4 a, Fig. 4 b, Fig. 4 c and Fig. 4 d, also the little halfbody thermal-insulating pipe case docking of more than three forms.Tenon is all adopted to engage (termination of halfbody thermal-insulating pipe case or interface on tenon 301 and mortise 302) between each joint cell cube thermal-insulating pipe case and between the halfbody thermal-insulating pipe cases of described two docking.Equally, when each joint cell cube thermal-insulating pipe case is docked by the little halfbody thermal-insulating pipe case of more than three, also Tenon joint is adopted between adjacent little halfbody thermal-insulating pipe case between two.
For obtaining better using effect, thermal shrinkage waterproof cap can also be added in the two ends of thermal-insulating pipe case 3.
For obtaining better heat insulation effect, the basis of technique scheme can add one insulation backplate again, see Fig. 5 a, Fig. 5 b and Fig. 5 c, the polyvinyl fuel gas pipeline no matter buried underground and heat distribution pipeline are parallel to each other and lay or mutually square crossing is laid, and can add board-type insulation backplate 5 ' or arc insulation backplate 5 simultaneously.
The heat insulation structure of the utility model polyvinyl fuel gas pipeline to be mainly used in Practical Project when embedded underground fuel gas polyethylene pipeline, polyvinyl fuel gas pipeline and existing heat distribution pipeline intersect or parallel laid time when cannot meet the minimum level clear distance between underground polyvinyl fuel gas pipeline and heat distribution pipeline or vertical clearance that CJJ 63-2008 " polyvinyl fuel gas pipeline engineering code " specifies, by being incubated polyvinyl fuel gas pipeline, polyvinyl fuel gas pipeline is protected, to ensure polyvinyl fuel gas pipeline safe operation under Soil Surrounding is not more than 40 DEG C or lower temperature.
Below, in conjunction with specific embodiments substantive distinguishing features of the present utility model and advantage are further described, but the utility model is not limited to listed embodiment.
Embodiment 1
Polyvinyl fuel gas pipeline 1 and heat distribution pipeline 2 parallel laid, reach every thermo-lag object by carrying out insulation to polyvinyl fuel gas pipeline.
As illustrated in figs. ia and ib, himself thermal-insulating pipe case external diameter of heat distribution pipeline 2 is 125mm, polyvinyl fuel gas pipeline 1 external diameter 90mm and this heat distribution pipeline 2 are buried underground underground same level is parallel, net level length is 300mm, the coated thick 30mm of polyvinyl fuel gas pipeline thermal-insulating pipe case 3, then be wound around a Cold winding band layer at the outer surface of thermal-insulating pipe case 3.
Embodiment 2
Polyvinyl fuel gas pipeline 1 intersects at heat distribution pipeline 2 upper vertical to be laid, and reaches every thermo-lag object by carrying out insulation to polyvinyl fuel gas pipeline.
As shown in Figure 2 a and 2 b, heat distribution pipeline 2 is confession backwater two pipelines of parallel laying, the insulating structure external diameter of himself is 125mm, polyvinyl fuel gas pipeline 1 external diameter 90mm, vertically pass through heat distribution pipeline 2, be 212mm with two heat distribution pipeline 2 vertical clearances, the coated thick 30mm of polyvinyl fuel gas pipeline thermal-insulating pipe case 3, for hard polyurethane foam, the outer surface of thermal-insulating pipe case 3 is wound around a Cold winding band layer 4, and installs hard sleeve additional, external diameter 168mm, thermal-insulating pipe case length is identical with sleeve pipe, stretches out 1m respectively long from two heat distribution pipeline 2 outer walls.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle; some improvements and modifications can also be made; therefore above explanation institute comprises and the structure shown in accompanying drawing should be considered as exemplary, and be not used to the protection domain that restriction the utility model applies for a patent.
Claims (8)
1. a heat insulation structure for polyvinyl fuel gas pipeline, comprises one group and is embedded in the heat distribution pipeline in soil and is parallel to each other with it or the polyvinyl fuel gas pipeline of delivery of fuel gas medium that square crossing is laid; It is characterized in that: a coated thermal-insulating pipe case on polyvinyl fuel gas pipeline.
2. the heat insulation structure of polyvinyl fuel gas pipeline according to claim 1, is characterized in that: described thermal-insulating pipe case length direction is spliced mutually by the above cell cube thermal-insulating pipe case of two joints; Each cell cube thermal-insulating pipe case is formed by the little halfbody thermal-insulating pipe case docking of two halfbodies or more than three.
3. the heat insulation structure of polyvinyl fuel gas pipeline according to claim 2, it is characterized in that: the independent Tenon that adopts engages separately between described each joint cell cube thermal-insulating pipe case and between the halfbody docked between two in described cell cube or little halfbody thermal-insulating pipe case, or adopts integral Tenon to engage.
4. the heat insulation structure of polyvinyl fuel gas pipeline according to claim 3, it is characterized in that: when adopting integral Tenon to engage between described each joint cell cube thermal-insulating pipe case and between the halfbody docked between two in described cell cube or little halfbody thermal-insulating pipe case, one length of the halfbody in described each cell cube or little halfbody thermal-insulating pipe case has mortise on docking end face, another is long to docking on end face with tenon, one side end face of this halfbody or little halfbody thermal-insulating pipe case has mortise, with tenon on opposite side end face, two described mortise UNICOMs, described two tenons combine as a whole.
5. the heat insulation structure of polyvinyl fuel gas pipeline according to any one of claim 1 to 4, it is characterized in that: when one group of heat distribution pipeline and the mutual square crossing of polyvinyl fuel gas pipeline are laid, the segment length of thermal-insulating pipe case coated on described polyvinyl fuel gas pipeline to stretch out 1m from heating pipeline each two ends tube wall.
6. the heat insulation structure of polyvinyl fuel gas pipeline according to any one of claim 1 to 4, is characterized in that: be enclosed with a Cold winding band layer in the periphery of thermal-insulating pipe case.
7. the heat insulation structure of polyvinyl fuel gas pipeline according to any one of claim 1 to 4, is characterized in that: be added with thermal shrinkage waterproof cap in the two ends of thermal-insulating pipe case.
8. the heat insulation structure of polyvinyl fuel gas pipeline according to any one of claim 1 to 4, is characterized in that: insulation backplate together with adding between heat distribution pipeline with polyvinyl fuel gas pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653374.9U CN204226961U (en) | 2014-11-04 | 2014-11-04 | The heat insulation structure of polyvinyl fuel gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653374.9U CN204226961U (en) | 2014-11-04 | 2014-11-04 | The heat insulation structure of polyvinyl fuel gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204226961U true CN204226961U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420653374.9U Active CN204226961U (en) | 2014-11-04 | 2014-11-04 | The heat insulation structure of polyvinyl fuel gas pipeline |
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| CN (1) | CN204226961U (en) |
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2014
- 2014-11-04 CN CN201420653374.9U patent/CN204226961U/en active Active
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