CN207569388U - A HDPE double-wall corrugated pipe - Google Patents

Abstract

The application discloses HDPE double-walled bellows, this HDPE double-walled bellows include: pipeline inner wall, the pipeline inner wall outside is equipped with the annular of corrugate protrudingly, between the annular arch no space connect and with pipeline inner wall integrated into one piece, the protruding outside of annular is equipped with the pipeline outer wall of corrugate, the trough department of pipeline outer wall with connect through rubber seal between the annular arch, the pipeline outer wall with be hollow structure between the annular arch, the pipeline outer wall is provided with first strengthening rib along the circumference direction in trough department. The inner wall of the pipeline is provided with the annular bulges which are closely connected, so that the stability of the HDPE double-wall corrugated pipe can be enhanced. The outer wall of the pipeline and the inner wall of the pipeline form mutually independent hollow structures through the sealing ring, and the pressure resistance of the pipeline is improved. The first reinforcing rib that the pipeline outer wall set up along circumference has increased the ring rigidity of this pipeline, has further strengthened the compressive capacity of pipeline.

Description

A HDPE double-wall corrugated pipe

technical field

The application relates to the field of pipe fittings, in particular to a HDPE double-wall corrugated pipe.

Background technique

HDPE (English full name: High Density Polyethylene; Chinese full name: High Density Polyethylene) double-wall corrugated pipe is a new type of lightweight pipe made of high-density polyethylene with a ring-shaped outer wall and a smooth inner wall. It has the characteristics of light weight, small drainage resistance, high compressive strength, corrosion resistance and convenient construction.

HDPE double-wall corrugated pipes are widely used in municipal engineering, underground drainage and sewage in residential quarters; pre-buried pipelines in expressways; The external pressure of HDPE double-wall corrugated pipe reflects the performance of the pipe, and the indicator of the ability to withstand external pressure is the ring stiffness. Therefore, ring stiffness is an important indicator for evaluating HDPE double-wall corrugated pipes. Ring stiffness is usually increased by improving the properties of the raw material or by adding reinforcing steel strips.

If the performance of raw materials is improved or a reinforced steel belt is added to the HDPE double-wall corrugated pipe, the production cost of the HDPE double-wall corrugated pipe will be greatly increased, the production is cumbersome, and the processing is complicated.

Utility model content

The present application provides a HDPE double-wall corrugated pipe to solve the technical problems that the existing HDPE double-wall corrugated pipes are not strong in compressive strength and stable enough.

In order to solve the above technical problems, the embodiment of the present application discloses the following technical solutions:

The application provides a HDPE double-wall corrugated pipe, the HDPE double-wall corrugated pipe includes: the inner wall of the pipe, the outer side of the inner wall of the pipe is provided with corrugated annular protrusions, and the annular protrusions are connected without gaps and connected with The inner wall of the pipeline is integrally formed, and the outer side of the annular protrusion is provided with a corrugated outer wall of the pipeline. The trough of the outer wall of the pipeline is connected to the annular protrusion through a rubber sealing ring. There is a hollow structure between the protrusions, and the outer wall of the pipeline is provided with first reinforcing ribs along the circumferential direction at the troughs.

Preferably, in the above-mentioned HDPE double-wall corrugated pipe, the crest of the outer wall of the pipe corresponds to the crest of the annular protrusion, and the trough of the outer wall of the pipe corresponds to the trough of the annular protrusion.

Preferably, in the above-mentioned HDPE double-wall corrugated pipe, one end of the HDPE double-wall corrugated pipe is provided with a flaring end, and the other end is provided with an interface end, and a sealing ring is arranged on the inner side of the flared end, and the interface ends are sequentially arranged from the inside to the outside. The inner wall of the pipe and the annular protrusion are provided.

Preferably, in the above-mentioned HDPE double-wall corrugated pipe, a second reinforcing rib is arranged circumferentially at the trough of the annular protrusion at the interface end, and the diameter of the second reinforcing rib is equal to the peak to the peak of the annular protrusion. The distance from the inner wall of the pipe.

Preferably, in the above-mentioned HDPE double-wall corrugated pipe, a waterproof layer is provided on the inner side of the inner wall of the pipe, and an anti-corrosion protection layer is arranged on the outer side of the outer wall of the pipe.

Compared with the prior art, the beneficial effects of the present application are:

The present application provides a HDPE double-wall corrugated pipe, the HDPE double-wall corrugated pipe includes the inner wall of the pipe, the outer side of the inner wall of the pipe is provided with corrugated annular protrusions, and the annular protrusions are connected without gaps and connected to the The inner wall of the pipe is integrally formed, and the outer side of the annular protrusion is provided with a corrugated outer wall of the pipe. There is a hollow structure between the ridges, and the outer wall of the pipeline is provided with first reinforcing ribs along the circumferential direction at the troughs. The inner wall of the pipe is provided with closely connected annular protrusions, which can enhance the stability of the HDPE double-wall corrugated pipe. Independent hollow structures are formed between the outer wall of the pipeline and the inner wall of the pipeline through the sealing ring, and the independent hollow structures increase the pressure resistance of the pipeline. The first reinforcing rib arranged along the circumference of the outer wall of the pipe increases the ring stiffness of the pipe and further enhances the compression resistance of the HDPE double-wall corrugated pipe.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Description of drawings

In order to illustrate the technical solution of the present application more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, on the premise of not paying creative labor, Additional drawings can also be derived from these drawings.

Fig. 1 is the basic structural representation of the HDPE double-wall corrugated pipe that the utility model embodiment provides;

Fig. 2 is a sectional view along the A-A direction of Fig. 1;

Explanation of reference signs: 1. inner wall of pipeline; 2. outer wall of pipeline; 3. annular protrusion; 4. first reinforcing rib; 5. flaring end; 51. sealing ring; 6. interface end; 7. second reinforcing rib ; 8, waterproof layer; 9, anti-corrosion protection layer.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

Referring to Fig. 1 , it is a schematic diagram of the basic structure of the HDPE double-wall corrugated pipe provided by the embodiment of the present invention. As shown in Figure 1, the HDPE double-wall corrugated pipe provided by the embodiment of the present application includes: the inner wall of the pipe 1, and the outer side of the inner wall 1 of the pipe is provided with corrugated annular protrusions 3, and there is no gap connection between the annular protrusions 3, and the corrugated The annular protrusions 3 are closely connected, which can increase the stability of the pipeline and enhance the pressure resistance of the pipeline. In addition, the annular protrusion 3 and the inner wall 1 of the pipe are integrally formed. The HDPE double-wall corrugated pipe in this application has strong integrity, and in terms of manufacturing process, if the annular protrusion 3 is connected to the inner wall 1 of the pipe, the manufacturing process is complicated. , and one-piece molding is relatively simple.

In this application, the outer side of the annular protrusion 3 is provided with a corrugated pipe outer wall 2, the trough of the pipe outer wall 2 and the annular protrusion 3 are connected by a rubber sealing ring, and the space between the pipe outer wall 2 and the annular protrusion 3 is a hollow structure . The outer wall 2 of the pipe and the inner wall 1 of the pipe form a hollow structure independent of each other through the sealing ring. When a certain pressure is received, the independent hollow structure has a good buffer function and increases the compression resistance of the HDPE double-wall corrugated pipe. . The outer wall of the pipe 2 is provided with first reinforcing ribs 4 along the circumferential direction at the troughs. A first reinforcing rib 4 is provided along the circumferential direction, and the first reinforcing rib 4 can cut off continuous corrugations to ensure a hollow structure between the outer wall of the pipe 2 and the annular protrusion 3, and a first reinforcing rib 4 is provided at the trough, It can increase the compressive performance at the trough, enhance the overall bending resistance of the HDPE double-wall corrugated pipe, and enhance the overall ring stiffness of the HDPE double-wall corrugated pipe.

In order to further optimize the technical solution, the peaks of the outer wall 2 of the pipe correspond to the peaks of the annular protrusion 3 , and the troughs of the outer wall 2 of the pipe correspond to the troughs of the annular protrusion 3 . Peak to peak, trough to trough, it is conceivable that in this case, the independent hollow structures formed between the outer wall 2 of the pipe and the annular protrusion 3 have relatively large hollow space structures. If the hollow space structure is relatively large, when the HDPE double-wall corrugated pipe is under pressure, it has a strong buffering capacity for pressure, so the compression resistance is relatively large.

In addition, one end of the HDPE double-wall corrugated pipe in this application is provided with a flaring end 5 , and the other end is provided with an interface end 6 . The interface end 6 of one HDPE double-wall corrugated pipe is inserted into the flaring end 5 of the other HDPE double-wall corrugated pipe. HDPE double-wall corrugated pipe is more convenient to connect and easy to use. A sealing ring 51 is provided on the inner side of the flaring end 5 , and the inner wall 1 of the pipe and the annular protrusion 3 are arranged in sequence at the interface end 6 from the inside to the outside. When the flaring end 5 is connected to the interface end 6, the sealing ring 51 can increase the sealing performance of the interface, and the annular protrusion 3 provided on the interface end 6 can enhance the pressure resistance of the joints of the pipes at both ends.

Further, a second reinforcing rib 7 is arranged circumferentially at the wave trough of the annular protrusion 3 of the interface end 6, and the diameter of the second reinforcing rib 7 is equal to the peak of the annular protrusion 3 to the inner wall 1 of the pipe. the distance. The second reinforcing rib 7 can increase the compressive stability at the interface. At the same time, the diameter of the second reinforcing rib 7 is the same as the distance from the crest of the annular protrusion 3 to the inner wall 1 of the pipe. The inner wall of the mouth end 5 is in contact, which can further achieve the effect of sealing.

Referring to Fig. 2, it is a cross-sectional view along the radial direction of the HDPE double-wall corrugated pipe in this application. It can be obtained from FIG. 2 that in the HDPE double-wall corrugated pipe provided by the embodiment of the present invention, a waterproof layer 8 is provided on the inner side of the inner wall 1 of the pipe. When the HDPE double-wall corrugated pipe is used for drainage and sewage discharge, the waterproof layer 8 can prevent the liquid in the pipe from seeping out. An anti-corrosion protection layer 9 is provided on the outer side of the pipe outer wall 2 . When the HDPE double-wall corrugated pipe is buried in the ground during work, the anti-corrosion layer can prevent the corrosion of the pipe by underground microorganisms, etc., and increase the service life of the pipe.

Since the above implementation methods are described in conjunction with reference to other methods, different embodiments have the same parts, and the same and similar parts between the various embodiments in this specification can be referred to each other. No further elaboration here.

It should be noted that in this specification, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion, such that an article or device comprising a series of elements includes not only those elements, but also includes Other elements not expressly listed, or elements inherent in the article or equipment. Without further limitations, the presence of an element qualified by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the article or device comprising said element.

Other embodiments of the present application will be readily apparent to those skilled in the art from consideration of the specification and practice of the utility disclosure disclosed herein. This application is intended to cover any modification, use or adaptation of the utility model, and these modifications, uses or adaptations follow the general principles of the application and include common knowledge or conventional techniques in the technical field not disclosed in the application means. The specification and examples are to be considered exemplary only, with the true scope and spirit of the application indicated by the contents of the appended claims.

The embodiments of the present application described above are not intended to limit the scope of protection of the present application.

Claims (5)

1. A HDPE double-wall corrugated pipe, characterized in that, the HDPE double-wall corrugated pipe comprises: a pipeline inner wall (1), and the outer side of the pipeline inner wall (1) is provided with a corrugated annular protrusion (3), the The annular protrusions (3) are connected without gaps and integrally formed with the inner wall of the pipeline (1). The outer side of the annular protrusions (3) is provided with a corrugated outer wall of the pipeline (2), and the outer wall of the pipeline (2) ) and the annular protrusion (3) are connected by a rubber sealing ring, the outer wall of the pipeline (2) and the annular protrusion (3) are hollow, and the outer wall of the pipeline (2) A first reinforcing rib (4) is arranged along the circumferential direction at the trough. 2. The HDPE double-wall corrugated pipe according to claim 1, characterized in that, the crest of the outer wall of the pipe (2) corresponds to the crest of the annular protrusion (3), and the trough of the outer wall of the pipe (2) corresponds to The trough of the annular protrusion (3). 3. The HDPE double-wall corrugated pipe according to claim 1, characterized in that, one end of the HDPE double-wall corrugated pipe is provided with a flared end (5), and the other end is provided with an interface port (6), and the flared end (5) A sealing ring (51) is arranged on the inner side, and the inner wall of the pipe (1) and the annular protrusion (3) are sequentially arranged on the interface end (6) from the inside to the outside. 4. The HDPE double-wall corrugated pipe according to claim 3, characterized in that, the trough of the annular protrusion (3) of the interface end (6) is provided with a second reinforcing rib (7) in the circumferential direction, The diameter of the second reinforcing rib (7) is equal to the distance from the crest of the annular protrusion (3) to the inner wall (1) of the pipe. 5. The HDPE double-wall corrugated pipe according to claim 1, wherein a waterproof layer (8) is provided on the inner side of the inner wall of the pipeline (1), and an anti-corrosion protection layer (8) is provided on the outer side of the outer wall (2) of the pipeline ( 9).