CN2658521Y

CN2658521Y - Multi-channel flexible composited hose

Info

Publication number: CN2658521Y
Application number: CN 200320103536
Authority: CN
Inventors: 金世源
Original assignee: SHENYANG PLASTIC MACHINERY INSTITUTE
Current assignee: SHENYANG PLASTIC MACHINERY INSTITUTE
Priority date: 2003-11-24
Filing date: 2003-11-24
Publication date: 2004-11-24
Anticipated expiration: 2013-11-24

Abstract

The utility model relates to a multi-channel flexible composite tube composed of a flexible tube. A plurality of internal flexible tubes are wrapped inside the flexible composite tube lengthwise. The internal tubes are parallel to one another and arranged circumferentially. The internal and external flexible tubes are the helix tubes or the corrugated pipes. The pitches or the pitches of the wave of the internal and external flexible tubes varies. The internal tubes are respectively and securely fused and contacted with the external tubes along the helical or corrugated ridges periodically, various tubes can be kept to stretch straightly within any length without any deformation and displacement. The internal and external tubes are consistent in the flexible performance. The whole tube has a good flexible performance and the load resistance capability are greatly enhanced.

Description

Multichannel flexible composite conduit pipe

Technical field

The utility model relates to a kind of conduit, particularly multichannel flexible composite conduit pipe.Can be used as the transporting of various optical cables, cable, communication cable, electric wire, fluid, gas etc.

Background technique

Existing multiple channel duct, a kind of is the rigidity multi-lumen tube that direct segmentation is produced, as: nine lumens of quincuncial five-tubed catheter, nine palace shapes etc., because the rigid construction of its section configuration is prone to stress and concentrates, ring stiffness is poor, do not satisfy the requirement of the anti-induced pressure when laying, its rigid construction in addition, causing in the forming process can only gravity cascade system, limit effective use length of conduit, and be not easy to transportation; The connection of tube and tube is many when laying, and inspection shaft is many, the comprehensive cost height.Another kind of flexible multiple channel duct commonly used generally is made up of the interspersed real wall pipe that combines in the binding mode in the real wall bassoon, though can coil, solid wall pipe does not have stretchability, and flexible bad, bearing capacity is limited.Chinese patent ZL01232652.6 and ZL00800848.5 disclose a kind of ripple multi-cavity optical cable conduit, outer tube is bellows or threaded pipe, interior pipe is solid wall pipe, in the pipe and outward corrugated tube between for extruding the processing welding, this conduit has improved the flexibility and the bearing capacity of outer tube, but because outward corrugated tube and interior solid wall pipe flexibility are inconsistent, easily misplace between the inner and outer pipes, the flexibility of outward corrugated tube can not be fully used, when needing less crooked of size, the restriction of solid wall pipe in being subjected to, the conduit overall flexibility is not enough, and rich closing quotation of the anti-induced pressure of this conduit and volume and transportation still are restricted.

Summary of the invention

The utility model solves the conformity of the inner and outer pipe flexibility of existing multiple channel duct, and a kind of complete flexible multichannel composite conduit is provided.

Main technical schemes: the utility model comprises a flexible outer duct, along the total length cladding many flexible innerduct are arranged in the middle of it, inner catheter circumferential array parallel to each other, flexible inside and outside conduit is volute or bellows, the pitch of inside and outside conduit or the pitch of waves do not wait, many inner catheters respectively with outer duct amplexiforming along the periodically fixing fusion in the ridge joint place of spiral or ripple, make each inner catheter in the composite conduit in any length, can both keep straight-line extension, non-warping dislocation.

Above-mentioned inside and outside conduit is the unequal spiral duct of pitch, and the pitch of external spiral conduit is greater than the pitch of inner helix pipe.

Above-mentioned flexible inside and outside conduit all is the single wall plastic spiral pipe.

Above-mentioned volute or bellows have class triangle, class quadrilateral, class is trapezoidal or the oval-shaped shape of cross section of class, make composite conduit have good proof to external pressure, guarantee the requirement of conduit to induced pressure.

The utility model effect:

It is inside and outside conduit that the utility model adopts equal flexible volute or bellows, and inside and outside conduit amplexiforms along periodically fixing fusion on the ridge joint of spiral or ripple, give full play to the three-dimension flexible of volute or bellows, and make the unanimity of inside and outside conduit flexibility, make conduit integral body have good flexibility, anti-load capacity significantly improves, and the ring stiffness value is greater than 6.3KN/m ², and have the advantage of conservation under the equivalent diameter, and be convenient to roll up rich closing quotation in the shaping operation, also be easy to long-distance transport; The effective length of pipe extends greatly when laying, and reduces tie point and inspection shaft in the construction and installation, significantly reduces comprehensive cost.

Description of drawings

Fig. 1 is the utility model plan view.

Fig. 2 is the sectional view of Fig. 1

Embodiment

As shown in Figure 1 and Figure 2, the utility model comprises a spiral outer duct 1, its inner cladding has many spiral inner catheters 2 along circumferential array, inner catheter circumferential array parallel to each other, the pitch of inside and outside conduit does not wait, and the pitch of external spiral conduit is greater than the pitch of inner helix pipe, and many inner catheters save 3 places periodically fixing fusion along spiral at ridge with outer duct respectively and amplexiform, make that each inner catheter can both keep straight-line extension in any length, non-warping dislocation.Volute or bellows have class triangle, class quadrilateral, class is trapezoidal or the oval-shaped shape of cross section of class, make composite conduit have good proof to external pressure, guarantee the requirement of conduit to induced pressure.

The processing of this multiple channel duct is the continuous extrusion preparation, extrude the spiral inner catheter earlier, circumferential array, and then the spiral outer duct is extruded in cladding outside inner catheter, when extruding outer duct, make inner catheter periodically fix fusion with outer duct respectively along spiral with saving 3 places and amplexiform at ridge.

Embodiment 1: by 5 circumferential array, the single wall volute of Ф 35.5mm is an inner catheter, pitch is 4mm, and the single wall volute of a Ф 116mm is extruded in cladding outside inner catheter, and pitch is 24mm, the sectional shape of internal and external screw conduit is a triangle, along Hand of spiral, amplexiform in the fixing fusion of ridge joint of the ridge joint place of per 2 pitch of spiral inner catheter and each pitch of external spiral conduit, make that each inner catheter can both keep straight-line extension in any length, non-warping dislocation, and kept the flexibility of conduit integral body.

Embodiment 2: by 5 circumferential array, the elliptic cross-section bellows of Ф 35.5mm is an inner catheter, the pitch of waves is 4mm, the elliptic cross-section bellows of a Ф 116mm is extruded in cladding outside inner catheter, the pitch of waves is 24mm, and fixing fusion the in the crest ridge joint place of per 2 pitch of waves of inner corrugated pipe and the crest ridge joint place of outer each pitch of waves of ripple conduit amplexiformed, and makes that each inner catheter can both keep straight-line extension in any length, non-warping dislocation, and kept the flexibility of conduit integral body.

Claims

1, a kind of multichannel flexible composite conduit pipe, comprise a flexible outer duct, along the total length cladding many flexible innerduct are arranged in the middle of it, inner catheter circumferential array parallel to each other, it is characterized in that: flexible inside and outside conduit is volute or bellows, and the pitch of inside and outside conduit or the pitch of waves do not wait, and many inner catheters are amplexiforming along the periodically fixing fusion in the ridge joint place of spiral or ripple with outer duct respectively, make each inner catheter in the composite conduit in any length, can both keep straight-line extension, non-warping dislocation.

2, composite conduit according to claim 1 is characterized in that: inside and outside conduit is the single wall plastic spiral pipe.

3, according to claim 1,2 described composite conduits, it is characterized in that: the inside and outside conduit pitch or the pitch of waves do not wait, and the pitch of outer duct or the pitch of waves are greater than the pitch or the pitch of waves of inner catheter.