CN203500703U - Fireproof polytetrafluoroethylene corrugated pipe assembly - Google Patents
Fireproof polytetrafluoroethylene corrugated pipe assembly Download PDFInfo
- Publication number
- CN203500703U CN203500703U CN201320527183.3U CN201320527183U CN203500703U CN 203500703 U CN203500703 U CN 203500703U CN 201320527183 U CN201320527183 U CN 201320527183U CN 203500703 U CN203500703 U CN 203500703U
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- CN
- China
- Prior art keywords
- sleeve
- buckling
- crimp head
- metal button
- guarantee
- 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.)
- Expired - Fee Related
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- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model provides a fireproof polytetrafluoroethylene corrugated pipe assembly, which comprises a metal buckling and pressing joint, a screw nut stop pin, an outer sleeve screw nut, a buckling and pressing sleeve, a fireproof organic silicon sealant layer, a polytetrafluoroethylene corrugated inner pipe and a metal wire reinforcing layer, wherein the outer diameter of the metal buckling and pressing joint is greater than the inner diameter of the polytetrafluoroethylene corrugated inner pipe, the buckling and pressing sleeve is arranged on the outer surface of the metal wire reinforcing layer, the end surface of the buckling and pressing sleeve is pasted in a way of being aligned with the end surface of the metal buckling and pressing joint, the outer sleeve screw nut is sheathed into the metal buckling and pressing joint, the screw nut stop pin is beaten into an annular groove from an annular groove starting point of the outer sleeve screw nut, the outer sleeve screw nut is ensured to be capable of flexibly rotating, and the fireproof organic silicon sealant layer is integrally vulcanized on the surfaces of the buckling and pressing sleeve and the metal wire reinforcing layer. The fireproof polytetrafluoroethylene corrugated pipe assembly has the advantages that high-temperature resistance, high-pressure resistance, long service life and high reliability are realized, a replaceable pipe joint is used, the joint can be easily replaced when a hose joint is damaged, and the use requirement of aero-engine outer pipelines is met.
Description
Technical field
The utility model relates to the hose construction field that aeroengine is used, particularly a kind of frpf polytetrafluoroethylbellows bellows component.
Background technique
In aeroengine exterior line, still adopt metal hard tube completely, this is because use security standpoint to consider from aeroengine, its exterior line all has fire protection requirement, and current used polytetrafluoroethylhose hose assembly is to be all wound around enhancement layer outward in teflon inner tube, and the heatproof of teflon own is not high, once breaking out of fire, hose also just cannot meet fire protection requirement, therefore, at aeroengine exterior line, all adopt metal hard tube and cannot adopt existing teflon hose.In addition, present used teflon hose, bending radius is excessive, be generally 10 times of left and right of hose outside diameter, this just requires to have larger installing space, and for limited external engine space, this has also limited the application of flexible pipe in aeroengine.
Model utility content
The purpose of this utility model is the polytetrafluorethylecorrugated corrugated hose that to have small-bend radius more and can meet the fire protection requirement of aeroengine exterior line in order to provide, and spy provides a kind of frpf polytetrafluoroethylbellows bellows component.
The utility model provides a kind of frpf polytetrafluoroethylbellows bellows component, it is characterized in that: described frpf polytetrafluoroethylbellows bellows component, comprise metal button crimp head 1, nut stop pin 2, cap nut 3, withholds sleeve 4, fire prevention organic silicon sealant layer 5, teflon ripple inner tube 6, wire reinforced layer 7;
Wherein: the external diameter of metal button crimp head 1 is larger than teflon ripple inner tube 6 internal diameters, guarantee between the two better laminating; Withhold sleeve 4 and be enclosed within wire reinforced layer 7 outer surfaces, guarantee wire reinforced layer 7 in metal button crimp head 1 and withhold between sleeve 4, withholding the end face of sleeve 4 and the end face of metal button crimp head 1 pastes neat, pass through crimping equipment, to withhold sleeve 4 and compress, guarantee to withhold non-loosening between sleeve 4, wire reinforced layer 7, teflon ripple inner tube 6 and metal button crimp head 1; Cap nut 3 is inserted in metal button crimp head 1, guarantee that cap nut 3 is coaxial with metal button crimp head 1, and the annular groove of the annular groove of cap nut 3 and metal button crimp head 1 is positioned at same cross section, nut stop pin 2 is squeezed into annular groove from the annular groove starting point of cap nut 3, after assembling, guarantee cap nut 3 energy flexible rotatings; There is fire prevention organic silicon sealant layer 5 withholding the 7 surface integrals sulfurations of sleeve 4 and wire reinforced layer.
Described fire prevention organic silicon sealant layer 5, infiltrate through in wire reinforced layer 7, guarantees fire prevention organic silicon sealant layer 5 and withholds voidlessness between sleeve 4 and wire reinforced layer 7.
Described frpf polytetrafluoroethylbellows bellows component, the flexibility of increase inner tube, utilizes ripple to reduce the elbow radius requirement of assembly.According to working pressure, outside teflon inner tube, be wound around the Stainless Steel Wire braid of the different numbers of plies, guarantee the compressive strength of flexible pipe.At Stainless Steel Wire, adopt the mode of overall sulfur resistant sealant outward, both played heat insulation, fire-retardant effect, make polytetrafluoroethylhose hose assembly meet fire protection requirement.Resistant sealant is penetrated into the space between wire reinforced layer, and while having avoided hose to use, phase mutual friction and the fracture of wire that causes has played protective action to wire reinforced layer between wire, has improved working life and the reliability of hose.By nut stop pin, cap nut is fixed on hose, when nut thread damages, carries out the replacing of cap nut, avoid, because thread damage causes scrapping of whole flexible pipe, having improved the utilization efficiency of hose.
Advantage of the present utility model:
Frpf polytetrafluoroethylbellows bellows component described in the utility model, high temperature resistant, high pressure, the life-span is long, reliability is high, uses Changable type pipe joint, is easy to change joint when hose coupling damages, and meets the usage requirement of aeroengine exterior line.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the utility model is described in further detail:
Fig. 1 is frpf polytetrafluoroethylbellows bellows component structural representation.
Embodiment
Embodiment 1
The present embodiment provides a kind of frpf polytetrafluoroethylbellows bellows component, it is characterized in that: described frpf polytetrafluoroethylbellows bellows component, comprise metal button crimp head 1, nut stop pin 2, cap nut 3, withholds sleeve 4, fire prevention organic silicon sealant layer 5, teflon ripple inner tube 6, wire reinforced layer 7;
Wherein: the external diameter of metal button crimp head 1 is larger than teflon ripple inner tube 6 internal diameters, guarantee between the two better laminating; Withhold sleeve 4 and be enclosed within wire reinforced layer 7 outer surfaces, guarantee wire reinforced layer 7 in metal button crimp head 1 and withhold between sleeve 4, withholding the end face of sleeve 4 and the end face of metal button crimp head 1 pastes neat, pass through crimping equipment, to withhold sleeve 4 and compress, guarantee to withhold non-loosening between sleeve 4, wire reinforced layer 7, teflon ripple inner tube 6 and metal button crimp head 1; Cap nut 3 is inserted in metal button crimp head 1, guarantee that cap nut 3 is coaxial with metal button crimp head 1, and the annular groove of the annular groove of cap nut 3 and metal button crimp head 1 is positioned at same cross section, nut stop pin 2 is squeezed into annular groove from the annular groove starting point of cap nut 3, after assembling, guarantee cap nut 3 energy flexible rotatings; There is fire prevention organic silicon sealant layer 5 withholding the 7 surface integrals sulfurations of sleeve 4 and wire reinforced layer.
Described fire prevention organic silicon sealant layer 5, infiltrate through in wire reinforced layer 7, guarantees fire prevention organic silicon sealant layer 5 and withholds voidlessness between sleeve 4 and wire reinforced layer 7.
Described frpf polytetrafluoroethylbellows bellows component, the flexibility of increase inner tube, utilizes ripple to reduce the elbow radius requirement of assembly.According to working pressure, outside teflon inner tube, be wound around the Stainless Steel Wire braid of the different numbers of plies, guarantee the compressive strength of flexible pipe.At Stainless Steel Wire, adopt the mode of overall sulfur resistant sealant outward, both played heat insulation, fire-retardant effect, make polytetrafluoroethylhose hose assembly meet fire protection requirement.Resistant sealant is penetrated into the space between wire reinforced layer, and while having avoided hose to use, phase mutual friction and the fracture of wire that causes has played protective action to wire reinforced layer between wire, has improved working life and the reliability of hose.By nut stop pin, cap nut is fixed on hose, when nut thread damages, carries out the replacing of cap nut, avoid, because thread damage causes scrapping of whole flexible pipe, having improved the utilization efficiency of hose.
Claims (2)
1. a frpf polytetrafluoroethylbellows bellows component, it is characterized in that: described frpf polytetrafluoroethylbellows bellows component, comprise metal button crimp head (1), nut stop pin (2), cap nut (3), withholds sleeve (4), fire prevention organic silicon sealant layer (5), teflon ripple inner tube (6), wire reinforced layer (7);
Wherein: the external diameter of metal button crimp head (1) is larger than teflon ripple inner tube (6) internal diameter, guarantee between the two better laminating; Withhold sleeve (4) and be enclosed within wire reinforced layer (7) outer surface, guarantee that wire reinforced layer (7) is positioned at metal button crimp head (1) and withholds between sleeve (4), withholding the end face of sleeve (4) and the end face of metal button crimp head (1) pastes neat, pass through crimping equipment, to withhold sleeve (4) and compress, guarantee to withhold non-loosening between sleeve (4), wire reinforced layer (7), teflon ripple inner tube (6) and metal button crimp head (1); Cap nut (3) is inserted in metal button crimp head (1), guarantee that cap nut (3) is coaxial with metal button crimp head (1), and the annular groove of the annular groove of cap nut (3) and metal button crimp head (1) is positioned at same cross section, nut stop pin (2) is squeezed into annular groove from the annular groove starting point of cap nut (3), after assembling, guarantee cap nut (3) energy flexible rotating; There is fire prevention organic silicon sealant layer (5) withholding the sulfuration of sleeve (4) and wire reinforced layer (7) surface integral.
2. according to frpf polytetrafluoroethylbellows bellows component claimed in claim 1, it is characterized in that: described fire prevention organic silicon sealant layer (5), infiltrate through in wire reinforced layer (7), guarantee fire prevention organic silicon sealant layer (5) and withhold sleeve (4) and wire reinforced layer (7) between voidlessness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320527183.3U CN203500703U (en) | 2013-08-27 | 2013-08-27 | Fireproof polytetrafluoroethylene corrugated pipe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320527183.3U CN203500703U (en) | 2013-08-27 | 2013-08-27 | Fireproof polytetrafluoroethylene corrugated pipe assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500703U true CN203500703U (en) | 2014-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320527183.3U Expired - Fee Related CN203500703U (en) | 2013-08-27 | 2013-08-27 | Fireproof polytetrafluoroethylene corrugated pipe assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500703U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748721A (en) * | 2019-09-03 | 2020-02-04 | 宜宾三江机械有限责任公司 | Non-flared catheter assembly and method of manufacturing the same |
| CN115372182A (en) * | 2022-07-29 | 2022-11-22 | 中国航发沈阳发动机研究所 | Accelerated life test method for polytetrafluoroethylene hose for aircraft engine |
-
2013
- 2013-08-27 CN CN201320527183.3U patent/CN203500703U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748721A (en) * | 2019-09-03 | 2020-02-04 | 宜宾三江机械有限责任公司 | Non-flared catheter assembly and method of manufacturing the same |
| CN115372182A (en) * | 2022-07-29 | 2022-11-22 | 中国航发沈阳发动机研究所 | Accelerated life test method for polytetrafluoroethylene hose for aircraft engine |
| CN115372182B (en) * | 2022-07-29 | 2024-05-17 | 中国航发沈阳发动机研究所 | Accelerated life test method for polytetrafluoroethylene hose for aeroengine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20210827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |