CN2384096Y

CN2384096Y - Antifreezing water pipe for cold area

Info

Publication number: CN2384096Y
Application number: CN 98246025
Authority: CN
Inventors: 刘金声
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-04
Filing date: 1998-11-04
Publication date: 2000-06-21
Anticipated expiration: 2008-11-04

Abstract

The utility model relates to an anti-freezing water pipe for a cold area, which is suitable for the pipelines for water feeding and water distribution in the northern areas. The anti-freezing water pipe for a cold area belongs to the technical field of the principles of heat insulation and flexibility. Elements are conducted by pipe-shaped liquid which is made of non-poisonous engineering materials. The utility model is characterized in that both ends of the anti-freezing water pipe for a cold area are provided with a flange (A) and a flange (B); the middle is provided with the whole pipe body which is composed of an outer pipe, an inner pipe and pipe brackets; an air heat insulation layer is formed by the support of a plurality of pipe brackets between the outer pipe and the inner pipe; flexibility sections are arranged on the outer pipe and the inner pipe on the inner side of the flange (A) and the flange (B) and the outside of the flexibility sections is wrapped with a tube cover. The utility model has the advantages of convenient construction, simple manufacturing process, anti-freezing, strong folding proof property and low manufacture cost, and the problems of freezing and breakage of the water feeding and water distribution pipelines in the north cold areas at present are solved.

Description

The antifreeze supply pipe of cold area

The antifreeze supply pipe of the utility model cold area belong to adopt thermal insulation and flexible principle technology, by the injection molded tubulose liquid conductive element of nontoxic engineering resin material.Be applicable to northern area underground, on the ground confession, water distribution pipeline.

At present, confession, water distribution pipeline generally adopt cast iron tube, steel pipe and cement pipe (how cylinder iron pipe) to build up.Long winter time at northern area, and temperature is low, because water temperature is lower in the pipe, and heat distributes soon, and pipeline is often freezed; The soil layer generation frost heave of directly buried type pipeline produces vertical and horizontal stress to pipeline, and the accident of pipeline fracture is also happened occasionally.These accidents have promptly influenced produces and the normal water of living, and has also caused the equipment loss.Than the freezing and rupture of major diameter supply channel, also cause the waste of great lot of water resources, had a strong impact on the benefit of water supply department.

The purpose of this utility model will design a kind of can preventing exactly and freeze, and can alleviate again because the vertical and horizontal stress of the outer soil layer frost heave of pipe generation, thereby avoid the supply pipe that ruptures.Solving the problem of present northern area winter often freezing and rupture, in order to guarantee for the normal operation of, water distribution pipeline in cold winter for, water distribution pipeline.

The purpose of this utility model can realize in the following manner.Two ends are provided with flange first 1, flange second 2, and the centre is provided with many tube stays 5 between outer tube 3, interior pipe 4 and outer, the interior pipe, more than each integrated through injection molding, constitute tubulose integral body (consulting Fig. 1).Between outer tube 3 and interior pipe 4, the space of being supported by many tube stays 5 is heat-insulating layer 6 (consulting Fig. 1, Fig. 2).On the outer tube 3 and interior pipe 4 of flange first 1 and flange second 2 inboards, one section corrugated flexible section 3-1,3-2 and 4-1,4-2 respectively are set, and outside it, be provided with respectively pipe drape over one's shoulders 7 and pipe drape over one's shoulders 8.(consulting Fig. 1).Air ring ring recess 1-1, connecting bolt hole 1-2 and stiffening rib 1-3 are set on flange first 1 junction surface; (consulting Fig. 1, Fig. 2); Convex semi-circular section leakproof ring 2-1, connecting bolt hole 2-2 and stiffening rib 2-3 (consulting Fig. 1) are set on flange second 2 junction surfaces.

Its working principle is: utilize the low air of thermal conductivity as the heat-insulating layer medium, its thermal conductivity is 0.000057 Cal/ (cms a ℃), only be 0.000475 of cast iron tube thermal conductivity 0.12Cal/ (cms ℃), pipe Nei Shui is very little with the speed that the pipe ambient substance produces heat exchange, and water does not freeze in a long time in the pipe so can make.Because the utility model end is provided with flexible section, thereby makes body possess certain elasticity.And have and correspondingly drape over one's shoulders 7,8 and be wrapped in outside it, prevented the bonding one of soil layer and outer tube wall, so can alleviate stress in many ways.The toughness of material in addition, the cast iron tube of specific rigidity has stronger anti-folding, resistance to cracking.Cooperating with convex semi-circular section leakproof ring 2-1 on the flange second 2 with the air ring ring recess 1-1 of flange first 1 aspect the connection, changing the large-area planar contact of conventional flange.The leakproof ring 2-1 that uses the convex semi-circular section contacts with rubber cushion small size in the air ring ring recess 1-1, thereby strengthens footprint pressure, can effectively prevent to manage interior seepage (consulting Fig. 1).

Major advantage of the present utility model is: heat-insulating layer is set, and its thermal conductivity is low, can effectively prevent freezing of sealing; Flexible section is set and pipe drapes over one's shoulders, makes its anti-folding, resistance to fracture strong; High Voltage formula flange is set connects, can effectively prevent seepage; Its deadweight is little, is convenient to construction and maintenance; The utility tree fat raw material is than using the steel low cost of manufacture.So the utility model all is better than conventional cast iron tube in heat insulation, anti-folding, leakproof, construction and all many-sides of cost.In addition, the also low temperature resistant character of tool of the utility model.

Below in conjunction with accompanying drawing and the utility model is described in further detail.

Fig. 1 is this pipe longitudinal construction sectional drawing;

Fig. 2 is this pipe lateral structure sectional drawing.

In the present embodiment, through nontoxic engineering resin raw material is heated, mechanically flange first 1, flange second 2 and middle outer tube 3, interior pipe 4 and the many tube stays 5 with two ends is injection molded into the tubulose one, more than constitutes this pipe whole (consulting Fig. 1).Heat-insulating layer 6 between outer tube 3 and the interior pipe 4 supports to form (consulting Fig. 1, Fig. 2) by many organ timberings shape tube stay in length and breadth 5.The effect of tube stay 5 is the pressure that bears between outer tube and interior pipe, keeps heat-insulating layer.On flange first 1 and flange second 2, except that air ring ring recess 1-1, convex semi-circular section leakproof ring 2-1 and connecting bolt hole 1-2,2-2 are arranged respectively, stiffening rib 1-3 and 2-3 are set respectively also, in order to the join strength (consulting Fig. 1, Fig. 2) of reinforcing flange and body.Pipe drapes over one's shoulders 7, pipe drapes over one's shoulders 8 and aims at directly buried type pipeline adapted, and its thickness is to make with general hard plastics less than tube wall, is two pieces watts of formulas up and down, closes before the construction to be wrapped on the flexible section and (consults Fig. 1).

Claims

1, the antifreeze supply pipe of a kind of cold area, it is characterized in that: by the injection molded pipe member of nontoxic engineering resin, two ends are provided with flange first (1), flange second (2), and the centre is provided with outer tube (3), interior pipe (4) and many tube stays (5), and it is whole more than to constitute this pipe; Between outer tube (3) and interior pipe (4), be heat-insulating layer (6); On the inboard outer tube (3) and interior pipe (4) of flange first (1) and flange second (2), one section flexible section respectively is set, each is provided with separately that pipe drapes over one's shoulders (7), pipe drapes over one's shoulders (8) its outside; On flange first (1), flange second (2), gasket groove and leakproof ring are set respectively.

2, the antifreeze supply pipe of cold area according to claim 1 is characterized in that: on inboard outer tube (3) of flange first (1), flange second (2) and interior pipe (4), be provided with respectively corrugated flexible section (3-1), (3-2) and (4-1), (4-2); Between outer tube (3) and interior pipe (4) many tube stays (5) are set, supporting formed space by it is heat-insulating layer (6); At flexible section (3-1) with (3-2), be provided with separately respectively that pipe drapes over one's shoulders (7) and pipe drapes over one's shoulders (8).

3, the antifreeze supply pipe of cold area according to claim 1 is characterized in that: air ring ring recess (1-1), connecting bolt hole (1-2) and stiffening rib (1-3) are set on flange first (1) junction surface; Convex semi-circular section leakproof ring (2-1), connecting bolt hole (2-2) and stiffening rib (2-3) are set on flange second (2) junction surface.