CN214466717U - Composite concrete pipe - Google Patents

Abstract

The utility model discloses a composite concrete pipe, which comprises a concrete pipe body, wherein the concrete pipe body comprises an inner liner layer, an anchor bolt is arranged on the outer wall of the inner liner layer, a shaped reinforcing mesh is arranged outside the inner liner layer, and the anchor bolt and the reinforcing mesh are both embedded in the concrete pipe body; the concrete pipe body also comprises a female end and a female end, wherein the interface between the female end and the inner wall of the female end is provided with a profile shaping concave to the pipe wall, the inner lining layer at the profile shaping position is provided with pipe end joints made of polypropylene materials, the pipe end joints are provided with two water pressure test holes, the two ends of the pipe end joints are provided with positioning grooves, and annular double-inclined-edge gaskets are sleeved outside the positioning grooves; the pipe end joint and the butted inner wall of the bell and spigot can be connected without welding, and can be tightly combined through a specially designed double-inclined-edge gasket, so that the cost and the time are saved; the static load can be kept under the dynamic load; can be quickly installed, pressed and safely operated.

Description

Composite concrete pipe

Technical Field

The utility model relates to a concrete pipe, in particular to compound concrete pipe.

Background

China is the country which produces and uses the most concrete pipes in the world at present, and according to incomplete statistics, about 5000 management and culvert production enterprises of various scales in China are currently in China. The main forming process comprises the following steps: the method comprises a centrifugal forming process, a suspension roller forming process, a vertical vibration forming process, a core mold vibration forming process and a radial extrusion forming process. The pipe connecting interface is usually in socket type, tongue-and-groove type and flat type.

In recent years, with the rapid development of urbanization construction, particularly, rain and sewage pipelines in underground spaces of towns have higher requirements on the sealing property of the joints and the corrosion resistance of pipe bodies of the pipelines, the traditional reinforced concrete pipelines cannot meet the requirements, and a novel composite pipeline and a manufacturing process thereof need to be developed.

Some lined reinforced concrete composite pipes lined with PVC, PE, glass fiber reinforced plastics and the like have appeared on the market, and because a manual production mode is adopted, the composite pipes have larger quality hidden dangers, such as the phenomena of inner liner bulging and cracking, connector falling, pipeline water seepage and the like frequently occur in the operation process of pipelines due to the fact that the composite materials are not firmly combined with concrete, the connectors need on-site secondary treatment, the pressure bearing capacity of concrete on the pipe wall is weak and the like. Meanwhile, the production operation also has the defects of low efficiency, higher cost and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provided a compound concrete pipe. The utility model adopts the technical proposal that: a composite concrete pipe comprises a concrete pipe body, wherein the concrete pipe body comprises a lining layer, the lining layer is made of a high-density polyethylene material resistant to chemical erosion and microbial erosion, the lining layer is cylindrical, and the wall thickness of the lining layer is 1.5-3 mm; a plurality of anchor bolts are arranged on the outer wall of the inner lining layer, and each anchor bolt comprises a cylindrical boss and a clamp buckle at the edge of the boss; a shaped reinforcing mesh is arranged outside the lining layer, and the anchor bolt and the reinforcing mesh are embedded in the concrete pipe body;

concrete pipe body still includes female end and socket end, the kneck of female end inner wall is provided with the female profile design to the socket of pipe wall, the kneck of socket end inner wall is provided with the female socket profile design to the pipe wall, the bolster profile design department with the socket profile design department all install the pipe end joint that the polypropylene material was made on the inner liner, the pipe end joint with the inner liner is connected, the overhead hydraulic test hole that is provided with of pipe end is two, two the hydraulic test hole with the central point that the pipe end connects is symmetry point central symmetry, the pipe end connects both ends and all is provided with the constant head tank, the constant head tank overcoat has annular double-inclined edge packing ring, double-inclined edge packing ring is including the left side edge and the right side edge that are located its top.

Furthermore, the inner surface of the inner liner layer is smooth and can be welded, prevent abrasion and resist microbial erosion.

Further, the chemical corrosion resistance degree of the inner liner layer is PH1-PH 14.

Further, the anti-pulling force of each anchor bolt is greater than or equal to 250N.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to a composite concrete pipe, with high density polyethylene inside lining and high strength concrete production pipeline economy very, it satisfies the basic requirement that is used for sewage treatment's pipeline: the pipe lining and the pipe end joint of the sleeve can permanently resist chemical erosion and microbial erosion within the PH1-PH14 range, even if the static load is kept under the dynamic load, and steel bell jacking pipes and non-reinforced pipes can be produced by using concrete with different quality grades.

2. The utility model relates to a compound concrete pipe, the polypropylene thermoplasticity pipe end joint that will make in advance installs on the inner liner of bell and spigot interface end profile design department, and both installations do not need the welding, only need can accomplish through the two slope edge packing rings of special design and combine closely, practiced thrift cost and time.

3. The utility model relates to a composite concrete pipe, job site easy operation owing to installed the pipe end and connect, is provided with two water pressure test holes on the pipe end connects, and two water pressure test holes use the central point that the pipe end connects as symmetry point central symmetry. Performing a water injection test through one of the water pressure test holes, wherein the water injection pressure is 0.15MPa, the constant pressure is 3min, and the water is qualified if no water leakage or pressure drop exists, so that the installation reliability of the rubber sealing ring, the pipe end joint, the double-inclined-edge gasket and the pipeline can be accurately and quickly judged; and then the water is discharged through another hydraulic test hole, so that the water pressure test device can be quickly installed and used for interface hydraulic test.

Safe installation and operation: reliable sealing connection, even the slope is less, also can the safe discharge sewage. The device is convenient to overhaul and is completely suitable for high-pressure flushing;

economic and efficient, and reasonably utilizes resources: concrete and high density polyethylene constitute a desirable combination of materials without the use of adhesives, resins or similar products.

4. The utility model relates to a compound concrete pipe can realize the automation of manufacturing process, from the full automatic system of artifical supplementary processing mould and product production, and operating personnel only need detect and control all processes in full automatic system.

Drawings

In order to more clearly explain the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without making any inventive changes.

Fig. 1 is a cross-sectional view of the horizontal overall structure of the present invention.

Fig. 2 is a schematic view of the pipe joint of the present invention.

Fig. 3 is a schematic view of the anchor bolt of the inner liner of the present invention.

Fig. 4 is a left side view of the dual bevel edge gasket of the present invention.

Fig. 5 is a vertical section view of the present invention.

In the figure, 1-a concrete pipe body, 2-an inner lining layer, 3-an anchor bolt, 4-a cylindrical boss, 5-a pincer button, 6-a reinforcing mesh, 7-a socket end, 8-a socket end, 9-a socket end profile shaping, 10-a socket end profile shaping, 11-a groove, 12-a rubber sealing ring, 13-a pipe end connector, 14-a water pressure test hole, 15-a positioning groove, 16-a double-inclined edge gasket, 17-a left flange and 18-a right flange.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings.

The core of the utility model is to provide a composite concrete pipe, which meets the basic requirements of a pipeline for sewage treatment, a polypropylene thermoplastic pipe end joint which is manufactured in advance is arranged on an inner liner layer with a shaped outline at an inner wall interface of a bell and spigot end, the connection of the pipe end joint and the inner liner layer can be realized without welding, and the tight combination can be completed only by a specially designed double-inclined edge gasket, thereby saving the cost and time; the static load can be kept even under the dynamic load, and the steel bell jacking pipe and the non-reinforced pipeline can be produced by using concrete with different quality grades; can be quickly installed, detected and safely operated.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the utility model discloses a composite concrete pipe, which comprises a concrete pipe body 1, wherein the concrete pipe body 1 comprises an inner liner layer 2, the inner liner layer 2 is made of high-density polyethylene material with chemical erosion resistance and microbial erosion resistance, the inner liner layer 2 is cylindrical, and the wall thickness is 1.5-3 mm; a plurality of anchor bolts 3 are arranged on the outer wall of the inner lining layer 2, and each anchor bolt 3 comprises a cylindrical boss 4 and a clamp buckle 5 at the edge of the boss; a shaped reinforcing mesh 6 is arranged outside the inner liner layer 2, and the anchor bolt 3 and the reinforcing mesh 6 are embedded in the concrete pipe body 1;

the concrete pipe body 1 also comprises a female end 7 and a female end 8, a female end profile shaping 9 which is concave to the pipe wall is arranged at the interface of the inner wall of the female end 7, a female end profile shaping 10 which is concave to the pipe wall is arranged at the interface of the inner wall of the female end 8, pipe end joints 13 made of polypropylene materials are respectively arranged on the inner liner 2 at the positions of the female end profile shaping 9 and the female end profile shaping 10, the pipe end joints 13 are connected with the inner liner 2, the pipe end joint 13 is provided with two water pressure test holes 14, the two water pressure test holes 14 are centrosymmetric by taking the central point of the pipe end joint 13 as a symmetric point, positioning grooves 15 are arranged at two ends of the pipe end joint 13, an annular double-inclined-edge gasket 16 is sleeved outside the positioning grooves 15, the double-inclined-edge gasket 16 is a double-inclined-edge gasket 16, and the double-inclined-edge gasket 16 comprises a left side flange 17 and a right side flange 18 which are positioned at the top of the double-inclined-edge gasket.

Specifically, the inner surface of the lining layer 2 is smooth and can be welded, prevent abrasion and resist microbial erosion.

Specifically, the inner liner layer 2 is chemically resistant to a degree of PH1 to PH 14.

Specifically, the pullout resistance of each anchor bolt 3 is 250N or more.

The utility model discloses the theory of operation: the reinforced concrete is used as a main body bearing structure of the concrete pipe body 1, the inner side of the main body bearing structure is provided with a high-density polyethylene inner liner layer 2 to enhance the corrosion resistance and the water passing capacity of the concrete, and the inner liner layers of the bell mouth outline shaping 9 and the socket outline shaping 10 are respectively provided with a pipe end joint 13 which is made of polypropylene materials and is provided with a positioning groove 15.

The inner liner 2 is made of High Density Polyethylene (HDPE), which is chemically resistant to PH1-PH14, resistant to microbial attack, extremely wear resistant and weldable, and has a smooth inner wall. The lining can be firmly connected with the surrounding concrete through one-time multiple fixation. The anchor bolts 3 are arranged in a dense manner on the inner lining of the socket profile 9 and the socket profile 10, thereby ensuring a reliable and permanent connection of the concrete pipes. The pulling resistance of each anchor bolt 3 is more than or equal to 250N, the whole lining layer 2 can continuously bear the underground water pressure of at least 0.15MPa, and even if the temperature fluctuates violently, the lining layer 2 cannot fall off from the concrete pipe body 1 around. The wall thickness of the inner liner 2 can be produced to be 1.5-3mm depending on the particular project.

The step 2 of installing the lining layer comprises the following steps: 1. cutting the width of the sheet inner liner according to the inner diameter of the concrete pipe body 1; 2. welding the sheet material lining layer into a lining pipe; 3. changing the shapes of the socket contour forming 9 and the socket contour forming 10 according to the pipeline connection requirement; 4. the lining layer 2 is fixed on the firm steel core. The whole process adopts special equipment for automatic operation, and a small amount of manpower is adopted for auxiliary completion of equipment operation.

Assembling a mold: conveying the steel core with the inner liner layer 2 to a die bottom die, heating the bell mouth outline shaping 9 position by adopting a tungsten lamp after the steel core is in place to enable the inner liner layer 2 at the heated position to have a deformation amount, lifting a bottom support on the bottom die to enter between the steel core and the inner liner layer 2, and shaping the bell mouth outline shaping 9 position. The steel core inner lining is sleeved into the inner lining layer 2, the steel bar mesh 6 which is manufactured in advance is arranged on the outer side of the inner lining layer 2, the outer die is assembled outside the steel bar mesh 6, and the outer die is fixed through bolts.

Pouring and forming: and (3) automatically and stably conveying the assembled pipe die to a forming station through crawler translation equipment, and pouring by adopting self-compacting concrete of C40-C50. The self-compacting concrete pouring process means that the concrete can flow compactly under the action of self gravity when the pipe core concrete is formed, and has good homogeneity without adding vibration force. The self-compacting concrete has the advantages of (1) ensuring good compactness of the concrete in pipeline pouring. (2) The production efficiency is improved. (3) Improve the working environment and the safety. (4) Saving electric energy and investment of wind vibrator. (5) The abrasion of the mould caused by vibration is avoided. (6) Reduce the abrasion of the concrete to the mixer. (7) The whole construction cost of the project is reduced.

Concrete curing: after pouring, the pipe die is automatically and stably conveyed to a curing station through crawler translation equipment, low-temperature steam curing can be adopted for curing, natural curing at ambient temperature can also be adopted, in order to improve the curing effect of concrete, materials such as curing agent, accelerated curing agent and the like can be added into the premixed concrete, and the demolding strength is not less than 20MPa in a short time.

Demolding the pipeline: and (3) demolding can be carried out when the strength of the concrete reaches demolding strength, the bolts of the outer mold are firstly released and moved out, then the concrete pipe body 1 and the pipe mold are automatically and stably transported to a demolding station through crawler translation equipment, then the concrete pipe body 1 is separated from the steel core by using a hoop lifting tool and is placed into a demolding bearing platform, a bottom support which is placed in advance at the position 9 for setting the contour of the socket is released through a clamp, then the pipe is overturned and horizontally placed, and the pipe is automatically and stably transported to the production station through the crawler translation equipment. The pipe die is transported to a die assembly station for the next production.

Mounting the pipe end joint 13: mounting a polypropylene thermoplastic pipe end joint 13 which is manufactured in advance on the inner liner 2 at the socket outline shaping 9 and the socket outline shaping 10, wherein the two are mounted without welding and can be tightly combined only by a specially designed double-inclined-edge gasket 16; the double-inclined-edge gasket 16 has good elastic deformation, the double-inclined-edge gasket 16 is firstly stretched in the pipe-end joint positioning groove 15, and the positioning groove 15 can firmly clamp the bottom of the double-inclined-edge gasket 16, so that the double-inclined-edge gasket 16 is not easy to fall off during installation, and plays a role in sealing through the compression of the left flange 17 and the right flange 18.

And (4) checking and accepting finished products: detect pipeline bell and spigot diameter, whether up to standard of ovality, whether up to standard of pipeline length, terminal surface gradient, whether the fastening is connected with the concrete pipe wall to inner liner 2, whether the fastening is connected with pipe end joint 13 to inner liner 2, whether up to standard of concrete pipe body 1 outer wall concrete protective layer, whether up to standard of concrete pipe body 1 appearance quality, whether the concrete strength satisfies the design requirement, whether inside and outside pressure load inspection satisfies the design requirement etc..

Installation and operation: during pipeline building site installation, through the hoist and mount point that 1 pipe shaft of concrete pipe body set up, can conveniently carry and hang and install. When the installation is carried out, firstly, the rubber sealing ring 12 is arranged on the positioning groove of the working surface of the faucet to center the pipe orifice, and the faucet is installed in place under the action of horizontal tension. The two water pressure test holes 14 are centrosymmetric by taking the central point of the pipe end joint 13 as a symmetric point, a water injection test is carried out through one water pressure test hole 14, the water injection pressure is 0.15MPa, the constant pressure is kept for 3min, and the water leakage and pressure drop are qualified, so that the installation reliability of the rubber sealing ring 12, the pipe end joint 13, the double-inclined-edge gasket 16 and the pipeline is accurately and quickly judged; after which the water is drained through another hydrostatic test port 14.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above-described embodiments of the present application do not limit the scope of the present application.

Claims (4)

1. A composite concrete pipe comprises a concrete pipe body and is characterized in that the concrete pipe body comprises a lining layer, the lining layer is made of chemical-erosion-resistant polyethylene materials, the lining layer is cylindrical, and the wall thickness is 1.5-3 mm; a plurality of anchor bolts are arranged on the outer wall of the inner lining layer, and each anchor bolt comprises a cylindrical boss and a clamp buckle at the edge of the boss; a shaped reinforcing mesh is arranged outside the lining layer, and the anchor bolt and the reinforcing mesh are embedded in the concrete pipe body;

concrete pipe body still includes female end and socket end, the kneck of female end inner wall is provided with the female profile design to the socket of pipe wall, the kneck of socket end inner wall is provided with the female socket profile design to the pipe wall, the bolster profile design department with the socket profile design department all install the pipe end joint that the polypropylene material was made on the inner liner, the pipe end joint with the inner liner is connected, the overhead hydraulic test hole that is provided with of pipe end is two, two the hydraulic test hole with the central point that the pipe end connects is symmetry point central symmetry, the pipe end connects both ends and all is provided with the constant head tank, the constant head tank overcoat has annular double-inclined edge packing ring, double-inclined edge packing ring is including the left side edge and the right side edge that are located its top.

2. The composite concrete pipe of claim 1, wherein the inner liner layer has a smooth inner surface that is weldable, abrasion resistant, and microbial resistant.

3. The composite concrete pipe of claim 1, wherein said inner liner is chemically resistant to a degree of PH1-PH 14.

4. The composite concrete pipe according to claim 1, wherein each of said anchor bolts has a pullout resistance of 250N or greater.

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