CN205489409U - Modified chlorination polyvinyl chloride cable protection double -ply bellows - Google Patents
Modified chlorination polyvinyl chloride cable protection double -ply bellows Download PDFInfo
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- CN205489409U CN205489409U CN201620038584.6U CN201620038584U CN205489409U CN 205489409 U CN205489409 U CN 205489409U CN 201620038584 U CN201620038584 U CN 201620038584U CN 205489409 U CN205489409 U CN 205489409U
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- polyvinyl chloride
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- cable protection
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Abstract
The utility model relates to a modified chlorination polyvinyl chloride cable protection double -ply bellows, including inlayer and skin, its characterized in that: inlayer and skin all are the corrugate, are formed by connecting in turn by crest and trough, and the crest be outside " U " shape structure of falling of relative directaxis, and the trough is relative directaxis inward " U " the structure that appears, the crest and the trough of inlayer coincide with outer crest and trough respectively to through the hot melt butt fusion together. The outer adoption fire -retardantly increases tough modified chlorination polyvinyl chloride material and makes, the inlayer adopts the modified chlorination polyvinyl chloride material of fire -retardant reinforcing to make, the utility model discloses have the tensile strength height, ring rigidity is high, and the heat resistance is good, and good heat dissipation and fire resistance are good, can satisfy non - excavation construction requirements.
Description
Technical field
This utility model relates to a kind of cable protection tubing, particularly relates to a kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows.
Background technology
Chliorinated polyvinyl chloride cable protection pipe many employings solid wall pipe structure at present, tubing connected mode uses bayonet joint, and tubing connects cannot be firm, it is impossible to be adapted to no-dig technique pipeline construction engineering, and construction has limitation.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of hot strength high, and ring stiffness is high, heat-resist, thermal diffusivity is good and good flame resistance disclosure satisfy that the modified chlorinated polyvinyl chloride cable protection pipe that non-excavating construction requires.
This utility model is achieved in that a kind of modified polyvinyl chloride cable protection double-ply bellows; including outer layer and internal layer; it is characterized in that: described outer layer and internal layer are the most corrugated; alternately it is formed by connecting by crest and trough; crest is the inverted " u "-shaped structure that relative longitudinal axis circular arc is outside, and trough is the " u "-shaped structure that relative longitudinal axis circular arc is inside；The crest of described internal layer and trough overlap with crest and the trough of outer layer respectively, and by hot-melt welds together.Described outer layer is the undulations surrounding using fire-retardant toughened modified chlorinated polyvinyl chloride material to make, and described internal layer uses the ripple internal layer that fire-retardant enhancing modified chliorinated polyvinyl chloride material is made.
This utility model has the following advantages: 1, ring stiffness: because using ripple struction, the inverse u shape structure of crest serves the effect of support, makes tubing compressive property be greatly improved, and ring stiffness is up to 50 more than kPa；2, heat conductivity: ripple struction, when having equal length, the overall heat dissipation area of tubing is equivalent to 2 times of solid-wall pipe；3, save material: because of " u "-shaped structure, compare solid-wall pipe, when reaching equality strength, greatly reduce material usage, also have a clear superiority in becoming present aspect；4, workability: because pipe material inner wall and cable are point cantact, reduce the contact area with cable, make cable more laborsaving when passing through, in hgher efficiency, tubing uses pipe collar to connect simultaneously, can be used for no-dig technique field, it is possible to be substantially reduced the construction infection and construction costs caused because of excavation.
Accompanying drawing explanation
This utility model is further described the most in conjunction with the embodiments.
Fig. 1 is the longitudinal profile structural representation of this utility model a kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows.
Fig. 2 is the outer layer longitudinal profile structural representation of this utility model a kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows.
Fig. 3 is the internal layer longitudinal profile structural representation of this utility model a kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is described in detail.
Refering to shown in Fig. 1, Fig. 2 and Fig. 3; a kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows described in the utility model; including outer layer 1 and internal layer 2; it is characterized in that: described outer layer 1 and internal layer 2 are the most corrugated; alternately it is formed by connecting by crest 3 and trough 4; crest 3 is the inverted " u "-shaped structure that relative longitudinal axis circular arc is outside, and trough 4 is the " u "-shaped structure that relative longitudinal axis circular arc is inside；The crest 3 of described internal layer and trough 4 overlap with crest 3 and the trough 4 of outer layer respectively, and by hot-melt welds together.
Described outer layer 1 uses fire-retardant toughened modified chlorinated polyvinyl chloride material to make, and can resist in transportation because the tubing collided with or cause because of ground settlement in running ruptures.Its formula is: chliorinated polyvinyl chloride (CPVC) 56%, polrvinyl chloride (PVC) 28%, precipitated calcium carbonate 3%, ground calcium carbonate 0.5%, stabilizer 5%, Tissuemat E 1.5%, ACR processing aid 2%, chlorinated polyethylene (CPE) 4%.
Described internal layer 2 uses fire-retardant enhancing modified chliorinated polyvinyl chloride material to make, and the comprcssive strength of tubing can be greatly improved.Its formula is: chliorinated polyvinyl chloride (CPVC) 26%, polrvinyl chloride (PVC) 53%, precipitated calcium carbonate 13%, ground calcium carbonate 0.5%, stabilizer 5%, Tissuemat E 1.5%, ACR processing aid 2%.
Wave height H of described ripple struction is 8～50mm, and pitch of waves L is 10～55mm.
Described outer layer 1 thickness is 2-5mm.
Described internal layer 2 thickness is 1-3mm.
The production method of this utility model a kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows, the steps include:
Step 1, by chliorinated polyvinyl chloride (CPVC), polrvinyl chloride (PVC), precipitated calcium carbonate, ground calcium carbonate, stabilizer, Tissuemat E, ACR processing aid, chlorinated polyethylene (CPE) is by 56: 28: 3: 0.5: 5: 1.5: 2: 4 mass percents are weighed, it is thoroughly mixed by homogenizer, simultaneously by chliorinated polyvinyl chloride (CPVC), polrvinyl chloride (PVC), precipitated calcium carbonate, ground calcium carbonate, stabilizer, Tissuemat E, ACR processing aid is by 26: 53: 13: 0.5: 5: 1.5: 2 mass percents are weighed, it is thoroughly mixed by homogenizer, respectively with two single screw extrusion machine extrusion outer layers 1 and internal layer 2；
Step 2, through double-layer coextrusion mould under the effect of vacuum by bonding to outer layer 1 and internal layer 2；
Step 3, by spraying cooling water outer layer 1 and internal layer 2 cooled down molding, form a kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows；
Step 4, by traction machine traction pulling out a kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows continuous-stable；
Step 5, by cutting machine by one modified chlorinated polyvinyl chloride cable protection double-ply bellows fixed length cutting, it is simple to pack, transport.
Claims (3)
1. a modified chlorinated polyvinyl chloride cable protection double-ply bellows; including outer layer and internal layer; it is characterized in that: described outer layer and internal layer are the most corrugated; and be alternately formed by connecting by crest and trough; crest is the inverted " u "-shaped structure that relative longitudinal axis circular arc is outside, and trough is the " u "-shaped structure that relative longitudinal axis circular arc is inside；The crest of described internal layer and trough overlap with crest and the trough of outer layer respectively, and by hot-melt welds together.
2.According to claim 1 DescribedA kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows, is characterized in that: described outer layer is the corrugated outer layer using fire-retardant toughened modified chlorinated polyvinyl chloride material to make.
3.According to claim 1 DescribedA kind of modified chlorinated polyvinyl chloride cable protection double-ply bellows, is characterized in that: described internal layer is the corrugated internal layer using fire-retardant enhancing modified chliorinated polyvinyl chloride material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620038584.6U CN205489409U (en) | 2016-01-16 | 2016-01-16 | Modified chlorination polyvinyl chloride cable protection double -ply bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620038584.6U CN205489409U (en) | 2016-01-16 | 2016-01-16 | Modified chlorination polyvinyl chloride cable protection double -ply bellows |
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| Publication Number | Publication Date |
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| CN205489409U true CN205489409U (en) | 2016-08-17 |
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| CN201620038584.6U Active CN205489409U (en) | 2016-01-16 | 2016-01-16 | Modified chlorination polyvinyl chloride cable protection double -ply bellows |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620837A (en) * | 2017-10-16 | 2018-01-23 | 南通世发船舶机械有限公司 | A kind of bellows |
-
2016
- 2016-01-16 CN CN201620038584.6U patent/CN205489409U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620837A (en) * | 2017-10-16 | 2018-01-23 | 南通世发船舶机械有限公司 | A kind of bellows |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |