CN2517945Y

CN2517945Y - Prestressed concrete pipe

Info

Publication number: CN2517945Y
Application number: CN 02218227
Authority: CN
Inventors: 徐明昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-04
Filing date: 2002-01-04
Publication date: 2002-10-23
Anticipated expiration: 2012-01-04

Abstract

The utility model relates to a prestress concrete pipe, which comprises a pipe core, a prestress steel wire, and a cement mortar protective layer. The utility model is characterized in that the pipe core is cast by utilizing the centrifugal force of a high speed rotating die assembly, in order to improve the compression strength of the pipe core, a plurality of prestress steel wires which are uniformly distributed on the periphery are wrapped around the outer periphery, acement mortar protective layer is poured on the outer periphery of the pipe core, and a smaller pusher-puller is arranged on each end socket of the pipe core for the convenience of the installation. The prestress concrete pipe utilizing the structure has the advantages that the density is high, the sealing performance is high, the stain resistance is high, and the service life is long.

Description

Prestressed concrete pipe

The utility model relates to a kind of pipe fitting, refers more particularly to a kind of prestressed concrete pipe by concrete for making.

In the urban construction process, all adopt steel pipe or prestressed concrete pipe in the water supply and sewage work such as various defeated horizontal pipes, distribution pipe, irrigation water pipe, sewage pressure pipe, syphon tube, pneumatic tube, industrial water pipe, water-cooling tube, water-bed intake pipe and Outlet Pipe.Because the steel pipe corrosion resistance that adopts is not high and inconvenience is installed, price is higher, so all adopt prestressed concrete pipe in the present various water supply and sewage work.At present, various prestressed concrete pipes all are that an end is cylindrical on the market, the other end is " loudspeaker " shape, adopt the prestressed concrete pipe of this structure to have following defective: the consistency of prestressed concrete own is inhomogeneous, compressive strength is not high, in use be an end that a cylinder port is inserted another root " loudspeaker " shape in addition, and then the space is filled up with concrete, adopt this installation method, in long-time the use, because pressure is bigger in the pipe, can cause concrete fill to be washed out, and causes whole supply and drain water system to leak.

The purpose of this utility model is to adopt a kind of novel mould to make a kind of consistency height, mounting structure prestressed concrete pipe easily.

The purpose of this utility model is achieved in that this prestressed concrete pipe is the mould that adopts high speed rotating; the tube core that utilizes the centrifugal force of mould to build; then in order to increase the compressive strength of tube core; on the excircle of tube core, be wound with a pre-power steel wire; a steel wire anchor is respectively arranged on the two ends of steel wire; and then on the periphery of tube core, make one deck cement mortar protective course, and a less degree of pulling out that pushes away is respectively arranged at the two ends of pipe, be convenient to the installation of pipe.

The utility model compared with prior art has following advantage: the pipe inner face is smooth, the flowing water resistance is little; The electronic centering of joint, easy for installation; The deflection degree of joint is big, water tightness is high; The inside and outside compressive strength height of pipe, consistency are even; Characteristics such as corrosion resistance height, long service life.

Below in conjunction with accompanying drawing the utility model is done further narration:

Fig. 1 is the structural representation of prestressed concrete pipe described in the utility model.

Fig. 2 is the A place partial enlarged drawing of prestressed concrete pipe shown in Figure 1.

1. tube core 2. vertical high tensile wire 3. pre-power steel wire 4. cement mortar protective courses 5. steel wire anchors

From Fig. 1 and Fig. 2 as can be seen, prestressed concrete pipe described in the utility model is made up of tube core 1, pre-power steel wire 3, cement mortar protective course 4, tube core 1 is the mould that adopts high speed rotating, utilize the centrifugal force of mould to form by concrete placement, some vertical high tensile wires 2 have equably distributed in the tube core 1, it is characterized in that: on the excircle of described tube core 1, be wound with a pre-power steel wire 3 of several even distribution circles, be fixed with a steel wire anchor 5 respectively in the two ends of pre-power steel wire 3; Cast one deck cement mortar protective course 4 on the excircle of described tube core 1; Each one the less degree of pulling out that pushes away in the two ends of tube core 1 is convenient to the installation of pipe.In installation process, as long as the pipe insertion is equipped with in the circular joint ring of rubber ring, when pressure in the pipe increased, pressure promoted rubber ring and moves, and rubber ring pushes away tighter and tighter, and better tightness water leakage phenomenon can not occur.

Claims

1. a prestressed concrete pipe is made up of tube core (1), pre-power steel wire (3), cement mortar protective course (4), some vertical high tensile wires (2) have equably distributed in the tube core (1), it is characterized in that: on described tube core (1) excircle, be wound with a pre-power steel wire (3) of several circumference that all distribute, be fixed with a steel wire anchor (5) respectively at the two ends of described pre-power steel wire (3); Excircle top-pour at described tube core (1) has one deck cement mortar protective course (4).

2. prestressed concrete pipe according to claim 1 is characterized in that: the two ends at described tube core (1) has less pushing away to pull out.