Buried detectable oriented rigid polyvinyl chloride pipe

Abstract

The utility model relates to the technical field of plastic pipes, and mainly discloses a buried detectable oriented rigid polyvinyl chloride pipe, which comprises pipe bodies and magnetic tracer strips, each pipe body comprises a straight pipe part and a joint part arranged at any end of the straight pipe part, the straight pipe part and the joint part are integrally formed, the other end of the straight pipe part is an embedded part, and when every two pipe bodies are connected, the embedded part is embedded into the straight pipe part. The embedded part of one pipe body is clamped into the connector part of the other pipe body, one or more grooves are axially formed in the pipe bodies, the grooves are formed in the outer pipe walls of the straight pipe parts and / or the connector parts, and one or more magnetic tracing strips are correspondingly embedded into the grooves, so that quick connection between pipelines can be realized, and the pipeline connection efficiency is improved. The pipeline has detectable magnetic property through the magnetic tracer strip, so that information such as pipeline trend and burial depth of the buried pipeline can be quickly and accurately found out.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipes, in particular to an oriented hard polyvinyl chloride pipe which is buried and detectable. Background Art

[0002] Oriented rigid polyvinyl chloride pipe (PVC-O pipe for short, also known as biaxially oriented polyvinyl chloride pipe) has excellent corrosion resistance, anti-leakage performance, thermal insulation performance, low fluid resistance and other characteristics of non-metallic pipes, and has been widely used in water supply and drainage projects. However, with the long time of pipeline commissioning, local economic development, large surface changes and other reasons, it is impossible to find the exact location. The direction and specific distribution of some pipelines are not clearly marked, and reliable directions cannot be provided for inspections. It has become one of the bottlenecks for efficient management of ground pipelines and has also led to a doubling of the cost of emergency response. In order to quickly and accurately find out the basic information such as the direction and burial depth of underground pipelines, pipeline detection technology is usually required. At present, the main method used for underground pipeline exploration at home and abroad is electromagnetic method. A large number of practices have also proved that electromagnetic method is the most widely used, effective, fast and low-cost method in underground pipeline exploration. It is a relatively economical and practical method. This method is based on the difference in conductivity and magnetic permeability between underground pipelines and surrounding media. According to the principle of electromagnetic induction, the electromagnetic space and time distribution law is observed and studied, so as to achieve the purpose of finding underground pipelines. However, since rigid polyvinyl chloride pipes have the properties of non-metallic pipes, how to make the pipes have magnetic properties and use commonly used electromagnetic detection technology to detect buried rigid polyvinyl chloride pipes has become one of the research focuses of many engineering and technical personnel. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems existing in the prior art and provide a buried detectable oriented rigid polyvinyl chloride pipe, which can realize the rapid connection between pipelines, and make the pipeline have detectable magnetic properties through the magnetic tracer strip, so as to facilitate the rapid and accurate identification of the pipeline direction and burial depth and other information of the buried pipeline.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a buried detectable oriented rigid polyvinyl chloride pipe, comprising a pipe body and a magnetic tracer strip, the pipe body is made of rigid polyvinyl chloride, preferably, the pipe body is a PVC-O pipe, the pipe body comprises a straight pipe portion and a joint portion arranged at either end of the straight pipe portion, the straight pipe portion and the joint portion are integrally formed, the other end of the straight pipe portion is an embedded portion, when two pipe bodies are connected, the embedded portion of one pipe body is inserted into the joint portion of the other pipe body, the pipe body is provided with one or more axially arranged grooves, the grooves are arranged on the outer pipe wall of the straight pipe portion and / or the joint portion, one or more magnetic tracer strips are correspondingly embedded in the grooves, and the magnetic tracer strip is a strip-shaped magnetic strip with a magnet arranged inside and rubber coated outside.

[0005] A further solution of the present utility model is that the joint head includes a first enlarged section, one end of the first enlarged section is connected to either end of the straight pipe section in a transitional manner, and the inner diameter of the first enlarged section matches the outer diameter of the straight pipe section.

[0006] A further solution of the present utility model is that an arc-shaped second enlarged section is provided on the first enlarged section, the inner diameter of the second enlarged section is larger than the inner diameter of the first enlarged section, an annular groove is formed in the second enlarged section, and a sealing rubber ring is provided in the annular groove.

[0007] A further solution of the present utility model is that there are four grooves, and the four grooves are circumferentially and arrayedly distributed on the outer tube walls of the straight pipe section and the joint head. There is one or two magnetic force tracing strips, and the one or two tracing strips are arranged in two of the grooves close to the ground.

[0008] A further solution of the present utility model is that there are six grooves, and the six grooves are circumferentially and arrayedly distributed on the outer tube walls of the straight pipe section and the joint head. There is one or two magnetic force tracing strips, and the one or two tracing strips are arranged in two of the grooves close to the ground.

[0009] A further solution of the present utility model is that the cross section of the groove is curve-shaped, the cross section of the magnetic force tracing strip is adapted to the cross section of the groove, the upper opening of the groove is smaller than the lower opening of the groove, and the upper dimension of the magnetic force tracing strip is smaller than the lower dimension of the magnetic force tracing strip.

[0010] A further solution of the present utility model is that the groove includes arc-shaped concave parts symmetrically arranged along the groove center line at the lower part and arc-shaped convex parts symmetrically arranged along the groove center line at the upper part. The magnetic force tracing strip includes a second clamping part which is recessed at the upper part and symmetrically arranged along the magnetic force tracing strip center line and a first clamping part which is convex at the lower part and symmetrically arranged along the magnetic force tracing strip center line. The shapes of the first clamping part and the second clamping part are respectively adapted to the shapes of the arc-shaped concave part and the arc-shaped convex part, and the first clamping part and the second clamping part are made of elastic rubber material.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] The utility model provides a buried detectable oriented rigid polyvinyl chloride pipe. By arranging grooves on the pipe body and embedding detectable magnetic tracing strips in the grooves, the pipe is given magnetic properties. Using the common electromagnetic detection technology, the detection of buried rigid polyvinyl chloride pipes is realized. Through the magnetic tracing strips, the detection and maintenance can be positioned in time, shortening the emergency repair time. The embedding parts and joint parts at both ends of the pipe body of the utility model realize the quick connection between pipes, facilitating installation. By arranging multiple grooves and multiple magnetic tracing strips on the pipe body, the detection sensitivity of the pipe is improved, so that the position of the pipe can be accurately judged. The shape design of the grooves and the magnetic tracing strips can facilitate the better clamping of the first clamping part and the second clamping part of the magnetic tracing strip into the arc concave part and the arc convex part of the groove, without damaging the magnetic tracing strip, improving the service life of the magnetic tracing strip, and the better fitting of the groove and the magnetic tracing strip, with better stability. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a three-dimensional schematic diagram of the pipe body structure of the present utility model;

[0016] Figure 3 For the present utility model Figure 1 It is a sectional view taken along the B-B direction in the present utility model;

[0017] Figure 4 For the present utility model Figure 1 It is a sectional view taken along the A-A direction in the present utility model;

[0018] Figure 5 For the present utility model Figure 4 It is an enlarged schematic diagram of the structure at C in the present utility model.

[0019] In the figure: 1, straight pipe part; 2, joint part; 3, magnetic tracing strip; 4, groove; 5, first enlarged section; 6, second enlarged section; 7, embedding part; 8, annular groove; 9, sealing rubber ring; 10, arc concave part; 11, arc convex part; 12, first clamping part; 13, second clamping part. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] As Figure 1 、 Figure 2 shown, a buried detectable oriented rigid polyvinyl chloride pipe includes a pipe body and a magnetic force tracer strip 3. The pipe body is made of rigid polyvinyl chloride material. Preferably, the pipe body is a circular oriented rigid polyvinyl chloride pipe, that is, a PVC-O pipe.

[0022] The pipe body includes a straight pipe portion 1 and a joint portion 2 provided at any one end of the straight pipe portion 1. The straight pipe portion 1 and the joint portion 2 are integrally formed. The other end of the straight pipe portion 1 is an embedding portion 7. When two pipe bodies are connected, the embedding portion 7 of one pipe body is clamped into the joint portion 2 of the other pipe body.

[0023] One or more grooves 4 are axially provided on the pipe body. The grooves 4 are provided on the outer pipe wall of the straight pipe portion 1 and / or the joint portion 2. One or more magnetic force tracer strips 3 are correspondingly embedded in the grooves 4. The magnetic force tracer strip 3 is a strip-shaped magnetic strip with a magnet inside and rubber coated outside.

[0024] In view of the processing difficulty of the groove 4 on the pipe body, generally only the groove 4 is provided on the straight pipe portion 1, which can meet the basic detection requirements. To ensure the continuity of pipeline detection, an extended groove 4 is also provided on the joint portion 2. The magnetic force tracer strip 3 extends to the joint portion 2. By providing the groove 4 on the pipe body and embedding the detectable magnetic force tracer strip 3 in the groove 4, the pipeline is given magnetic properties. Using the common electromagnetic detection technology, the detection of buried rigid polyvinyl chloride pipelines is realized. Through the magnetic force tracer strip 3, the detection and maintenance can be timely located, and the emergency repair time can be shortened.

[0025] As Figure 2 shown, the joint portion 2 includes a first enlarged section 5. One end of the first enlarged section 5 is connected to any one end of the straight pipe portion 1 in a transitional manner. The inner diameter of the first enlarged section 5 matches the outer diameter of the straight pipe portion 1. The embedding portion 7 can be directly embedded and installed in the first enlarged section 5.

[0026] As Figure 3As shown, in order to improve the sealing performance after connection between pipes, an arc-shaped second enlarged section 6 is provided on the first enlarged section 5. The inner diameter of the second enlarged section 6 is greater than that of the first enlarged section 5. An annular groove 8 is formed in the second enlarged section 6, and a sealing rubber ring 9 is provided in the annular groove 8. The embedding parts 7 and the connection heads 2 at both ends of the pipe body realize the quick connection between pipes, facilitating installation.

[0027] A further solution of the present utility model is that, as Figure 4 shown, four grooves 4 are provided. The four grooves 4 are circumferentially and arrayedly distributed on the outer pipe walls of the straight pipe portion 1 and the connection head 2. One or two magnetic force tracing strips 3 are provided, and one or two of the tracing strips are arranged in two of the grooves 4 close to the ground.

[0028] Preferably, six grooves 4 are provided. The six grooves 4 are circumferentially and arrayedly distributed on the outer pipe walls of the straight pipe portion 1 and the connection head 2. One or two magnetic force tracing strips 3 are provided, and one or two of the tracing strips are arranged in two of the grooves 4 close to the ground.

[0029] Generally, only one magnetic force tracing strip 3 is provided on the pipe body. During installation, the side with the magnetic force tracing strip 3 is facing upwards and directly facing the ground. During detection, the position of the pipe can be found by running a detector above the pipe, quickly and accurately identifying basic information such as the underground pipe route and burial depth. However, due to the complexity of the terrain where the pipelines are laid and the risk of failure of a single magnetic force tracing strip 3, multiple grooves 4 and multiple magnetic force tracing strips 3 can be provided on the pipe body, with the side with the magnetic force tracing strip 3 facing upwards and directly facing the ground, so as to improve the detection sensitivity of the pipe and thus accurately determine the position of the pipe.

[0030] As Figure 5 shown, the cross-section of the groove 4 is curved. The cross-section of the magnetic force tracing strip 3 is adapted to the cross-section of the groove 4. The upper opening of the groove 4 is smaller than the lower opening of the groove 4, and the upper dimension of the magnetic force tracing strip 3 is smaller than the lower dimension of the magnetic force tracing strip 3.

[0031] A further solution of the present utility model is that the groove 4 includes an arc concave portion 10 symmetrically arranged along the center line of the groove 4 at the lower part and an arc convex portion 11 symmetrically arranged along the center line of the groove 4 at the upper part. The magnetic force tracing strip 3 includes a second clamping portion 13 which is recessed at the upper part and symmetrically arranged along the center line of the magnetic force tracing strip 3 and a first clamping portion 12 which protrudes at the lower part and symmetrically arranged along the center line of the magnetic force tracing strip 3. The shapes of the first clamping portion 12 and the second clamping portion 13 respectively match the shapes of the arc concave portion 10 and the arc convex portion 11, and the first clamping portion 12 and the second clamping portion 13 are made of elastic rubber material. The shape design of the groove 4 and the magnetic force tracing strip 3 can facilitate the better clamping of the first clamping portion 12 and the second clamping portion 13 of the magnetic force tracing strip 3 into the arc concave portion 10 and the arc convex portion 11 of the groove 4 for fixation, without damaging the magnetic force tracing strip 3, improving the service life of the magnetic force tracing strip 3, and achieving better fitting and better stability between the groove 4 and the magnetic force tracing strip 3.

[0032] When manufacturing the present utility model, first, a PVC-O pipe is produced by using a pipe production line with a one-step or two-step production process. The straight pipe portion 1 and the joint portion 2 of the produced pipe are integrally formed. The integrally formed pipe with the groove 4 is directly extruded and formed by using a mold, or the formed PVC-O pipe is axially provided with the groove 4 by using a milling device, and then the magnetic force tracing strip 3 with a specific shape is embedded and installed in the groove 4 to make the pipe have magnetic properties.

[0033] When installing between two pipes, first, wipe the inner and outer pipe walls of the embedding portion 7 and the joint portion 2, then install a sealing rubber ring 9 inside the second enlarged section 6 of the joint portion 2 and apply a lubricant; then use a tool to center and lock the two pipes, and finally, check whether the sealing performance of the butted part is good.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A buried detectable oriented rigid polyvinyl chloride pipe, characterized in that: It includes a pipe body and a magnetic force tracing strip (3). The pipe body includes a straight pipe portion (1) and a joint portion (2) provided at any one end of the straight pipe portion (1). The other end of the straight pipe portion (1) is an embedding portion (7). One or more axially arranged grooves (4) are provided on the pipe body. The grooves (4) are provided on the outer pipe wall of the straight pipe portion (1) and / or the joint portion (2). One or more magnetic force tracing strips (3) are correspondingly embedded in the grooves (4).

2. The buried detectable oriented rigid polyvinyl chloride pipe according to claim 1, wherein: The joint portion (2) includes a first enlarged section (5). One end of the first enlarged section (5) is connected to any one end of the straight pipe portion (1) in a transitional manner. The inner diameter of the first enlarged section (5) matches the outer diameter of the straight pipe portion (1).

3. A buried detectable oriented rigid polyvinyl chloride pipe according to claim 2, characterized in that: A second enlarged section (6) is provided on the first enlarged section (5). The inner diameter of the second enlarged section (6) is larger than the inner diameter of the first enlarged section (5). An annular groove (8) is formed in the second enlarged section (6). A sealing rubber ring (9) is provided in the annular groove (8).

4. A buried detectable oriented rigid polyvinyl chloride pipe according to any one of claims 1-3, characterized in that: Four grooves (4) are provided. The four grooves (4) are circumferentially and arrayedly distributed on the outer pipe walls of the straight pipe portion (1) and the joint portion (2). One or two magnetic force tracing strips (3) are provided. One or two of the tracing strips are provided in the two grooves (4) close to the ground.

5. A buried detectable oriented rigid polyvinyl chloride pipe according to claim 4, characterized in that: Six grooves (4) are provided. The six grooves (4) are circumferentially and arrayedly distributed on the outer pipe walls of the straight pipe portion (1) and the joint portion (2). One or two magnetic force tracing strips (3) are provided. One or two of the tracing strips are provided in the two grooves (4) close to the ground.

6. A buried detectable oriented rigid polyvinyl chloride pipe according to any one of claims 1-3, characterized in that: The cross-section of the groove (4) is curved. The cross-section of the magnetic force tracing strip (3) is adapted to the cross-section of the groove (4). The opening above the groove (4) is smaller than the opening below the groove (4). The dimension above the magnetic force tracing strip (3) is smaller than the dimension below the magnetic force tracing strip (3).

7. An underground detectable oriented rigid polyvinyl chloride pipe according to claim 6, characterized in that: The groove (4) includes an arc concave portion (10) symmetrically arranged along the middle line of the groove (4) at the lower part and an arc convex portion (11) symmetrically arranged along the middle line of the groove (4) at the upper part. The magnetic force tracing strip (3) includes a second clamping portion (13) which is recessed at the upper part and symmetrically arranged along the middle line of the magnetic force tracing strip (3) and a first clamping portion (12) which protrudes at the lower part and symmetrically arranged along the middle line of the magnetic force tracing strip (3). The shapes of the first clamping portion (12) and the second clamping portion (13) are respectively adapted to the shapes of the arc concave portion (10) and the arc convex portion (11).

8. A buried detectable oriented rigid polyvinyl chloride pipe according to claim 7, characterized in that: The magnetic force tracing strip (3) is a strip structure with a magnet inside and rubber coated outside. The first clamping portion (12) and the second clamping portion (13) are made of elastic rubber material.

Images