CN2278826Y

CN2278826Y - Ribbed pressure-resistant plastic pipe and pipe connector

Info

Publication number: CN2278826Y
Application number: CN 97210709
Authority: CN
Inventors: 张国祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-23
Filing date: 1997-01-23
Publication date: 1998-04-15
Anticipated expiration: 2007-01-23

Abstract

The utility model relates to a ribbed pressure-resistant plastic pipe and pipe connector. Circumferential ribs of the existing ribbed pressure-resistant plastic pipes are arranged on the outer walls of pipes or on the middle parts of the inner walls of the pipes. The utility model arranges circular ribs in a pipe wall of a pipe or a pipe connector at the position near to an outer wall or an inner wall, improves the inertia moment of a pipe and the inertia moment of a pipe connector, and therefore, under the precondition that pipes with same diameter meet same rigidity and inner pressure resistant performance, a wall is thicker materials are saved and the cost is reduced. The ribbed pressure-resistant plastic pipe and pipe connector of the utility model can save materials by 20% to 40%, can obtain an obvious economic effect when being used for plastic pipes with large pipe diameters and pipe connectors.

Description

Ribbed pressure-resistant plastic tube and tubular union

The utility model belongs to a kind of plastic tube and pipe connecting member of plastics material, comprises the plastic tube and the tubular union of the fibre reinforced plastic tube material and the tubular union, particularly big caliber of glass fibre reinforced plastics class.

In order to improve the intensity of plastic tube, have in the prior art in the wall of tubing or the scheme of reinforcement on the outer wall, the disclosed technology of ZL93100742.9 is to establish hoop muscle material at the plastic tube outer wall, in order to outer rigidity and the anti-interior pressure energy power that improves tubing, under identical caliber and load performance, reduce wall thickness, save material; The disclosed technology of ZL94209612.6 is to establish netted tubular muscle material skeleton at half position (being intermediate portion in the tube wall) of pipe internal diameter and pipe outer diameter sum, this scheme also helps to improve the mechanical strength of tubing, but they also exist when pipe diameter increases, in order to satisfy outer rigidity and anti-internal pressure requirement, tube wall thickness increases thereupon, the deficiency that cost is higher.

The utility model aim to provide a kind of satisfy identical outside rigidity and anti-under the prerequisite of pressure request, can further reduce the tube wall materials, ribbed pressure-resistant plastic tube that reduces cost and pipe connecting member of plastics material.

The technological scheme that realizes above-mentioned purpose is: the utility model is provided with the hoop muscle that intensity and Young's modulus are significantly higher than the tube wall material in the tubular wall of plastic tube, it is characterized in that this hoop muscle has at least one deck to be provided in a side of to press close to the position of tube wall outer wall or internal face.

Pipe connecting member of plastics material is also adopted scheme same as described above, promptly in the tubular wall of pipe connecting member of plastics material, be provided with the hoop muscle that intensity and Young's modulus are significantly higher than the tube wall material, it is characterized in that this hoop muscle has at least one deck to be provided in a side of to press close to the position of tube wall outer wall or internal face.

The ring muscle can strengthen moment of inertia, for example: to the high-density polyethylene plastics tubing of 10mm wall thickness more the closer to outer wall or internal face, with diameter is that the steel wire of 2mm is when making spirality hoop muscle, if the ring muscle is by the described tube wall intermediate portion that is located at of prior art, during longitudinal pitch 5mm, moment of inertia is 124.4mm ⁴And if respectively establish one deck spirality hoop muscle at tube wall near the position of outer wall and internal face by one of the utility model conception plans; longitudinal pitch is 10mm; when (the muscle material keeps the 1mm spacing with outer pipe wall face and internal face separately and makes protective layer), moment of inertia then is 1602.4mm to two-layer hoop muscle radial center apart from 6mm ⁴Be the former 12.9 times; press performance identical in the two is anti-; the latter's moment of inertia has then improved tens times than the former; improved outer rigidity greatly; so under the condition that can satisfy tubing or tubular union outer wall surface or inner wall surface work ring tendon protective layer, should make as far as possible close outer wall of hoop muscle material or inwall wall in the wall.

The utility model can same caliber, satisfy identical outside under the prerequisite of rigidity and anti-internal pressure performance requirement, further reduce the pipe thickness of tubing or tubular union, obtain the effect of saving materials, reducing cost.During greater than the major diameter plastic tube of 200mm and tubular union, can obtain tangible economic benefit especially for diameter, generally can save tubing materials 20-40%.

Description of drawings

Fig. 1, the utility model embodiment 1 pipe structure schematic representation

1-plastic tube wall 2-hoop muscle 3-tube chamber φ-caliber

Fig. 2, the utility model embodiment 2 pipe structure schematic representation

4-hoop muscle 5-indulges muscle

Fig. 3, the utility model embodiment 3 pipe structure schematic representation

The 6-cavity

Fig. 4, the utility model embodiment 4 pipe structure schematic representation

The 7-packing

Fig. 5-the utility model embodiment 5 pipe structure schematic representation

The hollow special-shaped section bar of 8-

Fig. 6, the utility model embodiment 6 pipe structure schematic representation

Fig. 7, the new embodiment's 7 tubular union structural representations of this practicality

9-tubular union 10-tubing

Embodiment 1 (referring to Fig. 1)

This example is pressed close to outer wall in tube wall position is provided with spirality hoop muscle 2, and concerning bearing the pipe internal pressure, the supporting role of ring muscle to tube wall more can be brought into play reliably than being located near the position of inwall in the position that the ring muscle is located at close outer wall.

Embodiment 2 (referring to Fig. 2)

This example is pressed close to outer wall in tube wall position is provided with spirality hoop muscle 2, is provided with spirality hoop muscle 4 at the position of pressing close to inwall.This example also is provided with longitudinal rib 5 simultaneously, if longitudinal rib can reduce the longitudinal deformation of tubing, also can improve the mechanical strength of tubing axially loaded, needs bear the situation of larger axis to power in some use or course of working to adapt to, and further reach the purpose of saving material.

Embodiment 3 (referring to Fig. 3)

This example is pressed close to outer wall in tube wall position is provided with spirality hoop muscle 2, and the middle part also is provided with spirality hoop cavity 6 in the tube wall, and this hoop cavity can reduce cost satisfying the further materials that reduce under same diameter, moment of inertia, the mechanical property prerequisite.

This example adopts hot winding shaping process to make, and can form spirality hoop cavity in winding process.

Embodiment 4 (referring to Fig. 4)

This example is pressed close to outer wall and all is provided with spirality hoop muscle material with the position of pressing close to inwall in tube wall, the middle part is provided with spirality hoop cavity 6 in tube wall, and cheap packing 7 is arranged in the cavity.

By packing 7 is set, work in-process can form the cavity different with pipe wall material to this example in course of working.Packing price in the cavity is far below tubing, so can save the tubing materials.

This example is that diameter is 1.9 meters a glass fibre reinforced plastics plastic tube, press 0.6MPa in anti-, outer rigidity 5000Pa is owing to adopted structure of the present invention, make it to reduce 1/3rd than the tubing materials of existing same diameter and performance, price can be by 4500 yuan/meter of the 7600 yuan/Mi Jiangzhi that has tubing.

Embodiment 5 (referring to Fig. 5)

This example position near outer wall in tube wall is provided with the hoop muscle, and the middle part is provided with the hoop cavity 6 of making skeleton with hollow special-shaped section bar 8 in tube wall.It is the rectangular or the square of circular arc that the cross section of special-shaped section bar is four jiaos.

Cavity cross section can be circular, also four jiaos be the rectangular of circular arc or foursquare, the latter is more conducive to tubing than the former and reduces wall thickness, the saving materials.

Embodiment 6 (referring to Fig. 6)

This example is pressed close to outer wall and all is provided with spirality hoop muscle material with the position of pressing close to inwall in tube wall, the middle part is provided with two-layer spirality hoop cavity in tube wall.This structure is particularly useful for large diameter tubing, as Glass Steel Tube.

Embodiment 7

This example is a tubular union.The position of pressing close to outer wall in tubular union 9 tubular wall is provided with spirality hoop muscle 2, for improving its longitudinal load-bearing ability, also is provided with vertical muscle 5.

Claims

1, ribbed pressure-resistant plastic tube is provided with the hoop muscle that intensity and Young's modulus are significantly higher than the tube wall material in the tubular wall of tubing, it is characterized in that: described hoop muscle has at least one deck to be provided in a side of to press close to the position of tube wall outer wall or internal face.

2, ribbed pressure-resistant plastic tube according to claim 1 is characterized in that: press close to tube wall outer wall and internal face the position one deck spirality hoop muscle respectively is set.

3, ribbed pressure-resistant plastic tube according to claim 1 and 2 is characterized in that: the middle part also is provided with hoop cavity (6) in described tube wall.

4, ribbed pressure-resistant plastic tube according to claim 3 is characterized in that: it is the rectangular or the square of circular arc that the cross section of described hoop cavity (6) is four jiaos.

5, ribbed pressure-resistant plastic tube according to claim 1 and 2 is characterized in that: also be provided with longitudinal rib (5) in described tube wall.

6, ribbed pressure-resistant plastic tube according to claim 3 is characterized in that: also be provided with longitudinal rib (5) in described tube wall.

7, ribbed pressure-resistant plastic tube according to claim 4 is characterized in that: also be provided with longitudinal rib (5) in described tube wall.

8, ribbed pressure-resistant plastic tube link, be provided with the hoop muscle that intensity and Young's modulus are significantly higher than the tube wall material in the tubular wall of tubular union, it is characterized in that: described hoop muscle has at least one deck to be provided in a side of to press close to the position of tube wall outer wall or internal face.