PPR pipe fitting for repairing

Abstract

The utility model discloses a PPR (pentatricopeptide repeats) pipe fitting for repairing, which is characterized by comprising an arc section pipeline and a straight section pipeline, and one end of the arc section pipeline is fixedly connected and communicated with one end of the linear section pipeline. The pipeline repairing device can improve the efficiency and convenience of pipeline repairing.

Description

Technical Field

[0001] The utility model relates to the field of PPR pipe fittings, in particular to a PPR pipe fitting for repair. Background Art

[0002] PPR materials are brittle at low temperatures due to their molecular structure, and their brittleness becomes more obvious as the temperature drops. If improper operations are performed during product loading and unloading, transportation, cutting and welding, and finished product protection, external forces may cause hidden cracks in PPR pipes. Such cracks are difficult to detect in time through appearance, and pressure testing and acceptance work are required to promptly troubleshoot. However, due to the lack of responsibility in the pressure testing and acceptance work, some users may not even conduct pressure testing and acceptance work, which ultimately leads to the problem of brittle cracking of PPR pipes during use. The brittleness and linear cracking of such products after operation have also become common problems in the application of PPR products.

[0003] In our home decoration construction, the installation of pipes is essential for buildings. The main function of pipes is to transport water resources. Therefore, PPR water supply pipes, as a common application of PPR pipes, are widely used in urban and rural construction projects. Undoubtedly, once the use of products is involved, their maintenance will inevitably be involved. Similarly, once the pipes are installed, there will inevitably be a need to repair the pipes during their use.

[0004] During the use of PPR water supply pipes, due to improper product construction and application, including installation problems of hot-melt welding and use problems of over-temperature and over-pressure, freezing and icing in winter causing pipe expansion and bursting, etc., even if the performance of PPR products is fully qualified, pipeline leakage problems after operation will often occur. In response to the above situation, there are many PPR pipe fittings on the market that are specially used to repair leaking pipelines. However, since the pipeline cannot move axially, the existing repair pipe fittings have problems such as inconvenient installation, uneven welding quality, and large space occupation, which will greatly reduce the efficiency of pipeline repair. Utility Model Content

[0005] In order to overcome the defects of the prior art, the utility model provides a PPR pipe fitting for repair, which can improve the efficiency and convenience of pipeline repair.

[0006] An embodiment of the utility model provides a PPR pipe fitting for repair, characterized in that it comprises: an arc segment pipe and a straight segment pipe;

[0007] One end of the arc segment pipeline is fixedly connected and communicated with one end of the straight segment pipeline.

[0008] The utility model provides a repair PPR pipe fitting that is formed by splicing an arc segment pipe and a straight segment pipe, which can transform the repair scenario where the pipe to be repaired cannot move axially into two vertical directions, solve the size limitation during axis installation, and improve installation efficiency and product quality. At the same time, compared with the prior art, the utility model provides a repair PPR pipe fitting that has only two elbows and corners after installation, which has little effect on the water flow of the repaired pipe, thereby improving the effect of pipe repair.

[0009] Furthermore, the straight segment pipeline is located outside the arc of the arc segment pipeline, and intersects with the circular arc segment of the arc segment pipeline to form a fixed connection channel.

[0010] Furthermore, the end surface of the arc segment pipeline is also connected to a first socket end, and the end surface of the straight segment pipeline is also connected to a second socket end.

[0011] Preferably, the arc segment pipeline is connected to the pipeline to be repaired through the first socket end.

[0012] To facilitate subsequent welding and installation, the first socket end and the second socket end are fixedly connected to the input port of the arc segment pipeline and the output port of the straight segment pipeline respectively, for splicing with the pipeline to be repaired in subsequent installation.

[0013] Furthermore, the first socket end and the second socket end are both straight line segments, and a geometric center line of the first socket end is perpendicular to a geometric center line of the second socket end.

[0014] Furthermore, the distance between the end surface of the second socket end and the central axis of the outer wall of the first socket end does not exceed a preset distance threshold.

[0015] After the repair PPR pipe fitting provided by the utility model is installed on the pipeline to be repaired, the repair is completed and the water supply work is restarted, when the water flows through the repair PPR pipe fitting provided by the utility model, it needs to rise through the arc segment pipeline, and then fall back to the axial track through the straight segment pipeline. In this process, if the distance between the end face of the second socket end and the central axis of the outer wall of the first socket end is too large, that is, when the curvature of the arc segment pipeline is too large, the water flow through the pipeline needs to consume more kinetic energy to pass through the pipeline, which will have a greater impact on the water flow rate. Therefore, it is necessary to ensure that the distance between the end face of the second socket end and the central axis of the outer wall of the first socket end does not exceed the preset distance threshold during design.

[0016] Furthermore, the thinnest part of the bottom wall thickness of the first socket end is not less than a preset size threshold.

[0017] Furthermore, the first socket end, the second socket end, the arc segment pipe and the straight segment pipe are injection molded into an integrated structure.

[0018] The PPR pipe fitting for repair provided by the utility model has a simple structure and is easy to prepare, and is very suitable as a daily repair fitting for water pipelines.

[0019] Furthermore, the first socket end is a water inlet end, and the second socket end is a water outlet end.

[0020] Furthermore, the surface of the arc segment pipeline also includes water flow guide marks.

[0021] The utility model provides a PPR pipe fitting for repair, and a water flow guide mark is arranged on the surface of the pipe fitting, which is beneficial for maintenance personnel to judge the installation direction and improve the installation efficiency.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) The end faces of the water inlet and the water outlet and their axes are perpendicular to each other: By making the end faces of the water inlet and the water outlet of the repair pipe fitting perpendicular to each other, the installation direction of the repair pipe fitting is changed to solve the problem of insufficient installation dimensions in the axial direction of the pipe to be repaired.

[0024] (2) Simple structure and fewer corners after repair: Compared with the current pipeline rupture repair method that uses multiple elbows to solve the problem of insufficient installation dimensions in the axial direction of the pipeline, this new type of repair only has two elbow turning points, which can effectively reduce water flow losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic structural diagram of a PPR pipe fitting for repair provided in one embodiment of the present invention.

[0026] Figure 2 This is a schematic structural diagram of a preferred embodiment of a PPR pipe fitting for repair provided by the utility model.

[0027] Figure 3 This is a schematic diagram of the internal structure of the PPR pipe fitting for repair provided by the utility model.

[0028] Figure 4 A schematic diagram of an installation scenario of a PPR pipe fitting for repair provided by the utility model.

[0029] Figure 5 This is a schematic diagram of an installation scenario of one of the existing repair pipe fittings provided by the utility model.

[0030] Figure 6 A schematic diagram of an installation scenario of another existing repair pipe provided by the utility model.

[0031] Explanation of the reference numerals: 1-first socket end; 2-second socket end; 3-arc segment pipe; 4-straight segment pipe; 5-water flow guide mark; 6-pipeline to be repaired; 7-PPR straight through; 8-repair PPR pipe; 9-PPR right-angle elbow; 10-the thinnest part of the bottom wall. DETAILED DESCRIPTION

[0032] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0033] It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0034] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Reference Figure 1 , is a schematic structural diagram of a PPR pipe fitting for repair provided by an embodiment of the utility model, comprising: an arc segment pipe 3 and a straight segment pipe 4;

[0036] One end of the arc segment pipeline 3 is fixedly connected and communicated with one end of the straight segment pipeline 4 .

[0037] The utility model provides a repair PPR pipe fitting that is formed by splicing an arc segment pipe and a straight segment pipe, which can transform the repair scenario where the pipe to be repaired cannot move axially into two vertical directions, solve the size limitation during axis installation, and improve installation efficiency and product quality. At the same time, compared with the prior art, the utility model provides a repair PPR pipe fitting that has only two elbows and corners after installation, which has little effect on the water flow of the repaired pipe, thereby improving the effect of pipe repair.

[0038] Furthermore, the straight-segment pipeline 4 is located outside the arc of the arc-segment pipeline 3 and intersects with the circular arc segment of the arc-segment pipeline 3 to form a fixed connection channel.

[0039] In view of the problem of small installation space, the utility model solves the size limitation during axis installation by splicing the arc segment pipeline 3 and the straight segment pipeline 4.

[0040] Furthermore, the end surface of the arc segment pipe 3 is also connected to the first socket end 1, and the end surface of the straight segment pipe 4 is also connected to the second socket end 2.

[0041] Furthermore, the arc segment pipeline 3 is connected to the pipeline to be repaired 6 through the first socket end 1.

[0042] Preferably, the first socket end 1 and the second socket end 2 are both straight line segments, and a geometric center line of the first socket end 1 is perpendicular to a geometric center line of the second socket end 2 .

[0043] In a preferred embodiment, referring to Figure 2 To facilitate subsequent welding, a first socket end 1 and a second socket end 2 are respectively provided at the input port of the arc segment pipeline 3 and the output port of the straight segment pipeline 4, and the geometric center line of the first socket end 1 and the geometric center line of the second socket end 2 are perpendicular to each other.

[0044] The first socket end and the second socket end are fixedly connected to the input port of the arc segment pipeline and the output port of the straight segment pipeline respectively, so as to be spliced ​​with the pipeline to be repaired in subsequent installation, which can improve the convenience for subsequent welding and installation, thereby improving the efficiency of pipeline repair.

[0045] It is worth mentioning that Figure 2 It can be seen that the utility model solves the problem of the pipeline being unable to move axially by setting the end face of the input port of the arc segment pipeline 3 and the end face of the output port of the straight segment pipeline 4 to be perpendicular to each other and changing the installation direction of the repair pipe.

[0046] Preferably, the distance between the end surface of the second socket end 2 and the central axis of the outer wall of the first socket end 1 does not exceed a preset distance threshold.

[0047] In a preferred embodiment, the distance between the end surface of the second socket end 2 and the central axis of the outer wall of the first socket end 1 is approximately 0.5 times the diameter of the outer wall of the first socket end 1 .

[0048] After the repair PPR pipe fitting provided by the utility model is installed on the pipeline to be repaired, the repair is completed and the water supply work is restarted, when the water flows through the repair PPR pipe fitting provided by the utility model, it needs to rise through the arc segment pipeline, and then fall back to the axial track through the straight segment pipeline. In this process, if the distance between the end face of the second socket end and the central axis of the outer wall of the first socket end is too large, that is, when the curvature of the arc segment pipeline is too large, the water flow through the pipeline needs to consume more kinetic energy to pass through the pipeline, which will have a greater impact on the water flow rate. Therefore, it is necessary to ensure that the distance between the end face of the second socket end and the central axis of the outer wall of the first socket end does not exceed the preset distance threshold during design.

[0049] Furthermore, the thinnest part 10 of the bottom wall thickness of the first socket end 1 is not less than a preset size threshold.

[0050] In a preferred embodiment, referring to Figure 3The thinnest part 10 of the bottom wall thickness of the first socket end 1 must be greater than the national standard minimum size requirement for pipe fittings of this specification size.

[0051] Furthermore, the first socket end 1, the second socket end 2, the arc segment pipe 3 and the straight segment pipe 4 are injection molded into an integrated structure.

[0052] Preferably, the first socket end 1 is a water inlet end, and the second socket end 2 is a water outlet end.

[0053] Preferably, the surface of the arc segment pipeline 3 also includes a water flow guide mark 5.

[0054] In a preferred embodiment, by providing a water flow guide mark 5 on the surface of the pipe, users or maintenance personnel can more clearly identify that the first socket end 1 is the water inlet end and the second socket end 2 is the water outlet end.

[0055] Reference Figure 4 , is a schematic diagram of an installation scenario of a PPR pipe fitting for repair provided by the utility model. The installation process of the utility model is described below in conjunction with the accompanying drawings:

[0056] First, the broken part of the pipe 6 to be repaired is cut off. After the broken part is cut off, a PPR straight-through 7 is welded by hot-melt at one end of the water inlet direction of the pipe 6 to be repaired. At the same time, a PPR right-angle elbow 9 is also welded by hot-melt at the other end. Finally, the first socket end 1 of the repair PPR pipe fitting provided by the utility model is connected and fixed with the PPR straight-through 7 by hot-melt welding, and then the second socket end 2 is connected and fixed with the PPR right-angle elbow 9 by hot-melt welding, and the repair of the pipe 6 to be repaired is completed.

[0057] In order to reflect the advantages of the present invention over the prior art, the following will introduce the installation process of two existing repair pipes. By comparing the installation process of the present invention with the installation process of the existing repair pipes, the beneficial effects of the present invention can be clearly reflected.

[0058] Reference Figure 5 , is a schematic diagram of an installation scenario of one of the existing repair pipes provided by the utility model. The installation process of the existing repair pipe is specifically as follows:

[0059] First, the ruptured portion of the pipe 6 to be repaired is cut off. Then, a PPR through-hole 7 is welded to each end of the cut pipe. After measuring the distance between the two PPR through-holes 7, the required length of the repaired PPR pipe 8 is obtained. According to the required length for repair, a PPR pipe of appropriate length is taken as the repaired PPR pipe 8. Finally, the two ends of the repaired PPR pipe 8 are respectively hot-melt welded to the two PPR through-holes 7 to complete the repair of the pipe 6 to be repaired.

[0060] However, the existing repair pipe fittings have the following problems: since the length of the repair PPR pipe 8 is the distance between the internal stoppers of the two PPR through-holes 7, which is greater than the distance between the end faces of the through-holes 7, the installation process requires the flexibility of the pipe 8 to be bent to a certain arc before it can be hot-melted and plugged together. The installation process is relatively complicated and difficult, and it is easy to cause welding quality problems. At the same time, since large-diameter pipes have poor toughness and are difficult to bend, the existing repair pipe fittings are not suitable for large-diameter pipe repair;

[0061] Compared with the existing repair pipe fittings, the repair PPR pipe fittings provided by the utility model convert the repair scenario where the pipeline cannot move axially into two vertical directions. By setting the water inlet and outlet end faces of the repair pipe fittings to be perpendicular to each other, the installation direction of the repair pipe fittings is changed, solving the problem of insufficient axial installation dimensions of the pipeline to be repaired and the size limitations during axial installation, thereby improving installation efficiency and product quality.

[0062] Reference Figure 6 , is a schematic diagram of another installation scene of an existing repair pipe provided by the utility model. The installation process of the existing repair pipe is specifically as follows:

[0063] First, the ruptured portion of the pipe 6 to be repaired is removed. Then, a PPR right-angle elbow 9 is welded to each of the two ends after the removal. Subsequently, two repair PPR pipes 8 of appropriate length are taken and hot-melted and plugged into the two PPR right-angle elbows 9 respectively, so as to form two vertical channels at both ends of the ruptured portion of the pipe 6 to be repaired. Another repair PPR pipe 8 of appropriate length is taken, and the two ends are hot-melted and connected with the two PPR right-angle elbows respectively. Finally, the two vertical channels are connected by two PPR right-angle elbows 9, and finally a closed water flow channel is formed, and the repair of the pipe 6 to be repaired is completed.

[0064] However, the existing repair pipes have the following problems: the installation process is complicated, more pipes are used, which takes up a large space, and the repaired pipes have four elbows and corners, which easily affect the water flow efficiency and cause the water flow rate of the pipes to be low.

[0065] Compared with the existing repair pipe fittings, the repair PPR pipe fittings provided by the utility model have a simple structure, are easy to install, and occupy a small space. In addition, compared with the existing repair pipe fittings that have four elbows after the pipeline is repaired, the utility model has only two elbows after the pipeline is repaired, which has a lower impact on the water flow, can effectively reduce water flow losses, and thus improve the quality of pipeline repair.

[0066] In summary, the utility model aims at the leakage of PPR pipelines, studies and develops special PPR pipe fittings for quick repair, and develops one-piece "7"-shaped special pipe fittings for repair scenarios with small installation space and the pipeline cannot be moved axially, changes the welding direction, and improves the convenience of construction. In addition, for pipelines with long excavation distances, a flexible flange with a socket is designed to simplify the repair process, avoid the risk of centering and misaligned welding, improve the quality of the weld, and make the repair work of the PPR pipeline leakage point fast and convenient, stable operation, minimize the risk of secondary leakage, and reduce the impact of the repair section on the original pipeline flow.

[0067] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A PPR pipe fitting for repair, characterized in that: include: Arc segment pipeline (3) and straight segment pipeline (4); One end of the arc segment pipeline (3) is fixedly connected to and communicates with one end of the straight segment pipeline (4).

2. The PPR pipe fitting for repair according to claim 1, characterized in that: The straight segment pipeline (4) is located outside the arc of the arc segment pipeline (3), and intersects with the circular arc segment of the arc segment pipeline (3) to form a fixed connection channel.

3. The PPR pipe fitting for repair according to claim 1, characterized in that: The end surface of the arc segment pipeline (3) is also connected to a first socket end (1), and the end surface of the straight segment pipeline (4) is also connected to a second socket end (2).

4. The PPR pipe fitting for repair according to claim 3, characterized in that: The arc segment pipeline (3) is connected to the pipeline (6) to be repaired via the first socket end (1).

5. The PPR pipe fitting for repair according to claim 3, characterized in that: The first socket end (1) and the second socket end (2) are both straight line segments, and the geometric center line of the first socket end (1) is perpendicular to the geometric center line of the second socket end (2).

6. The PPR pipe fitting for repair according to claim 3, characterized in that: The distance between the end surface of the second socket end (2) and the central axis of the outer wall of the first socket end (1) does not exceed a preset distance threshold.

7. The PPR pipe fitting for repair according to claim 3, characterized in that: The thinnest part (10) of the bottom wall thickness of the first socket end (1) is not less than a preset size threshold.

8. The PPR pipe fitting for repair according to claim 3, characterized in that: The first socket end (1), the second socket end (2), the arc segment pipeline (3) and the straight segment pipeline (4) are injection molded into an integrated structure.

9. The PPR pipe fitting for repair according to claim 3, characterized in that: The first socket end (1) is a water inlet end, and the second socket end (2) is a water outlet end.

10. The PPR pipe fitting for repair according to claim 1, characterized in that: The surface of the arc segment pipeline (3) also includes a water flow guide mark (5).

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