PE pipeline thermal expansion and cold contraction eliminating device convenient to overhaul

Abstract

The utility model discloses a PE pipeline thermal expansion and cold contraction eliminating device convenient to overhaul, which comprises a pipeline compensator assembly, pipeline bodies and a positioning plate, the pipeline compensator assembly comprises a pipeline compensator body and connecting flanges arranged at the two end parts of the pipeline compensator body, the pipeline bodies are arranged at the two end parts of the pipeline compensator assembly, and the positioning plate is arranged at the two end parts of the pipeline compensator assembly. A pipeline flange is arranged on the inner side of the pipeline body and connected with a connecting flange, a plurality of first threaded holes are formed in the pipeline flange and the connecting flange, and bolts are arranged in the first threaded holes. According to the PE pipeline thermal expansion and cold contraction eliminating device convenient to overhaul, the connecting flange is positioned through a positioning plate arranged on the connecting flange and a positioning groove formed in the pipeline flange, so that a first threaded hole in the connecting flange is aligned with a first threaded hole in the pipeline flange; and therefore, the pipeline compensator can be quickly positioned after being disassembled and overhauled subsequently, and the pipeline compensator can be quickly mounted on the pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline compensators, in particular to a device for eliminating thermal expansion and contraction of PE pipelines which is convenient for maintenance. Background Art

[0002] Pipeline compensators, also known as expansion joints or expansion joints, are primarily used to compensate for the thermal expansion and contraction of pipelines due to temperature changes. If the pipeline cannot expand or contract completely freely during temperature changes, thermal stress will be generated in the pipeline. This stress must be considered in pipeline design, otherwise it may cause the pipeline to rupture and affect normal production. Pipeline compensators are widely used in PE pipelines.

[0003] When installing the pipe compensator, it is necessary to align the threaded holes of the end flange with the threaded holes of the flange on the pipe, and then connect them by bolts. However, most existing pipe compensators do not have the positioning function. During installation, it takes a certain amount of time to align the flange on the pipe compensator with the flange on the pipe. Later, after the pipe compensator is disassembled and repaired, it is not convenient to quickly position and install the pipe compensator. For this reason, we propose a PE pipe thermal expansion and contraction elimination device that is easy to repair. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the above problems and / or the problems existing in the existing PE pipe thermal expansion and contraction elimination devices, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide a PE pipe thermal expansion and contraction elimination device that is easy to maintain. The connecting flange is positioned by a positioning plate arranged on the connecting flange and a positioning groove opened on the pipe flange, so that the first threaded hole on the connecting flange is aligned with the first threaded hole on the pipe flange, so that the subsequent pipeline compensator can be quickly positioned after disassembly and maintenance is completed, thereby facilitating its rapid installation on the pipeline.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A device for eliminating thermal expansion and contraction of PE pipes that is convenient for maintenance, comprising:

[0009] The pipeline compensator assembly includes a pipeline compensator body and connecting flanges provided at both ends of the pipeline compensator body;

[0010] A pipe body is provided at both ends of the pipe compensator assembly, a pipe flange is provided on the inner side of the pipe body, the pipe flange is connected to the connecting flange, a plurality of first threaded holes are provided on the pipe flange and the connecting flange, bolts are provided in the first threaded holes, and a positioning groove is provided on the pipe flange;

[0011] A positioning plate is provided on the outer wall of the connecting flange, the positioning plate is engaged with the positioning groove, and a limit plate is rotatably provided on the outer wall of the positioning plate;

[0012] As a preferred solution of the device for eliminating thermal expansion and contraction of PE pipes that is easy to maintain described in the utility model, a sealing gasket is provided between the connecting flange and the pipe flange, and the material of the sealing gasket is rubber.

[0013] As an optimal solution of the PE pipe thermal expansion and contraction elimination device that is easy to maintain described in the utility model, a threaded rod is fixed to the positioning plate near the middle of the connecting flange end, a second threaded hole is opened on the outside of the connecting flange, and the threaded rod is threadedly connected to the second threaded hole.

[0014] As an optimal solution of the PE pipe thermal expansion and contraction elimination device that is easy to maintain described in the utility model, a rotating rod is fixed to the middle part of the inner wall of the limiting plate, a rotating plate is fixed to the inner wall of the rotating rod, and a slot is provided on the outer wall of the positioning plate, and the rotating rod and the rotating plate are rotatably arranged in the slot.

[0015] As a preferred solution of the device for eliminating thermal expansion and contraction of PE pipes that is easy to maintain described in the utility model, a protective pad is provided between the positioning plate and the limiting plate, and the material of the protective pad is rubber.

[0016] As a preferred solution of the device for eliminating thermal expansion and contraction of PE pipes that is easy to maintain described in the utility model, two positioning plates are provided.

[0017] Compared with the prior art, the utility model has the following beneficial effects: this PE pipe thermal expansion and contraction elimination device, which is easy to maintain, positions the connecting flange through the positioning plate arranged on the connecting flange and the positioning groove opened on the pipe flange, so that the first threaded hole on the connecting flange is aligned with the first threaded hole on the pipe flange, so that the subsequent pipeline compensator can be quickly positioned after disassembly and maintenance is completed, thereby facilitating its rapid installation on the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive labor. Among them:

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a PE pipe thermal expansion and contraction elimination device that is convenient for maintenance;

[0020] Figure 2 This is a schematic diagram of the partial three-dimensional structure of a PE pipe thermal expansion and contraction elimination device that is convenient for maintenance;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the pipe flange of a PE pipe thermal expansion and contraction elimination device that is convenient for maintenance;

[0022] Figure 4 This is a schematic diagram of the partial three-dimensional structure of a PE pipe thermal expansion and contraction elimination device that is convenient for maintenance;

[0023] In the figure: 100, pipeline compensator assembly; 110, pipeline compensator body; 120, connecting flange; 121, second threaded hole; 200, pipeline body; 201, pipeline flange; 202, positioning groove; 300, positioning plate; 301, limit plate; 302, rotating rod; 303, rotating plate; 304, slot; 305, threaded rod. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0027] The utility model provides a device for eliminating thermal expansion and contraction of PE pipes which is convenient for maintenance. The device positions the connecting flange by means of a positioning plate arranged on the connecting flange and a positioning groove opened on the pipe flange, so that the first threaded hole on the connecting flange is aligned with the first threaded hole on the pipe flange, so that the pipeline compensator can be quickly positioned after disassembly and maintenance is completed, thereby facilitating rapid installation on the pipeline.

[0028] Figure 1-Figure 4 The following is a schematic diagram showing the structure of an embodiment of a PE pipe thermal expansion and contraction elimination device that is convenient for maintenance. Figure 1-Figure 4 The present embodiment provides a PE pipeline thermal expansion and contraction elimination device that is easy to maintain, and its main body includes a pipeline compensator assembly 100, a pipeline body 200 and a positioning plate 300.

[0029] The pipeline compensator assembly 100 includes a pipeline compensator body 110 and connection flanges 120 provided at both ends of the pipeline compensator body 110 .

[0030] The pipe body 200 is disposed at both ends of the pipe compensator assembly 100. A pipe flange 201 is disposed on the inner side of the pipe body 200 and connected to the connecting flange 120. Multiple first threaded holes are defined in the pipe flange 201 and the connecting flange 120, each of which is provided with bolts. Positioning grooves 202 are defined in the pipe flange 201. Preferably, in this embodiment, a sealing gasket made of rubber is disposed between the connecting flange 120 and the pipe flange 201. The sealing gasket provided between the connecting flange 120 and the pipe flange 201 seals the gap between them, ensuring a tight connection between the two.

[0031] The positioning plate 300 is set on the outer wall of the connecting flange 120, and the positioning plate 300 is engaged with the positioning groove 202. The outer wall of the positioning plate 300 is rotatably provided with a limit plate 301. Preferably, in this embodiment, a threaded rod 305 is fixed to the middle part of the end of the positioning plate 300 near the connecting flange 120, and a second threaded hole 121 is provided on the outer side of the connecting flange 120. The threaded rod 305 is threadedly connected with the second threaded hole 121. The positioning plate 300 is threadedly installed on the connecting flange 120 under the action of the threaded rod 305 and the second threaded hole 121. Later, the operator can manually rotate the positioning plate 300 to remove it from the connecting flange 120 so as to disassemble and replace the positioning plate 300. A rotating rod 302 is fixed to the middle part of the inner wall of the limit plate 301, and a rotating plate 303 is fixed to the inner wall of the rotating rod 302. A slot 304 is provided on the outer wall of the positioning plate 300. The rotating rod 302 and the rotating plate 303 are rotatably arranged in the slot 304. The limit plate 301 can be rotated at the front end of the positioning plate 300 under the action of the rotating rod 302 and the rotating plate 303. After the positioning is completed, the limit plate 301 can be manually rotated so that the limit plate 301 is vertically set at the front end of the positioning plate 300, thereby limiting the entire pipeline compensator assembly 100 so that it can be subsequently installed by bolts. A protective pad is provided between the positioning plate 300 and the limit plate 301. The material of the protective pad is rubber. The protective pad provided between the positioning plate 300 and the limit plate 301 protects the two, prevents direct contact between the two and wear, and effectively extends their service life. There are two positioning plates 300, and the two positioning plates 300 further enhance the positioning of the pipeline compensator assembly 100.

[0032] Combine Figure 1-Figure 4 , a PE pipe thermal expansion and contraction elimination device that is easy to maintain in this embodiment is specifically used as follows: after the disassembly and maintenance of the pipe compensator is completed, the connecting flange 120 is positioned by setting it on the positioning plate 300 and on the pipe flange 201, so that the connecting flange 120 is positioned and installed on the pipe flange 201, thereby positioning the pipe compensator. After the positioning is completed, the first threaded holes on the connecting flange 120 and the pipe flange 201 are aligned, so that the pipe compensator after the disassembly and maintenance is completed can be quickly positioned so that it can be quickly installed on the pipe subsequently. By rotating the limit plate 301 set on the positioning plate 300, the limit plate 301 can be manually rotated after the positioning is completed, so that the limit plate 301 is vertically set at the front end of the positioning plate 300, thereby limiting the entire pipe compensator assembly 100, further facilitating its subsequent installation by bolts.

[0033] While the present invention has been described above with reference to specific embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the embodiments disclosed herein may be combined with one another in any manner, and the omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A device for eliminating thermal expansion and contraction of PE pipes that is convenient for maintenance, characterized in that: include: A pipeline compensator assembly (100) comprises a pipeline compensator body (110) and connecting flanges (120) arranged at both ends of the pipeline compensator body (110); A pipeline body (200) is provided at both ends of the pipeline compensator assembly (100); a pipeline flange (201) is provided on the inner side of the pipeline body (200); the pipeline flange (201) is connected to the connecting flange (120); a plurality of first threaded holes are provided on the pipeline flange (201) and the connecting flange (120); bolts are provided in the first threaded holes; and a positioning groove (202) is provided on the pipeline flange (201); A positioning plate (300) is arranged on the outer wall of the connecting flange (120), the positioning plate (300) is engaged with the positioning groove (202), and a limiting plate (301) is rotatably arranged on the outer wall of the positioning plate (300).

2. The device for eliminating thermal expansion and contraction of PE pipes that is convenient for maintenance according to claim 1 is characterized in that: A sealing gasket is provided between the connecting flange (120) and the pipeline flange (201), and the sealing gasket is made of rubber.

3. The device for eliminating thermal expansion and contraction of PE pipes that is convenient for maintenance according to claim 1 is characterized in that: A threaded rod (305) is fixed to the middle of the positioning plate (300) near the end of the connecting flange (120), and a second threaded hole (121) is opened on the outside of the connecting flange (120), and the threaded rod (305) is threadedly connected to the second threaded hole (121).

4. The device for eliminating thermal expansion and contraction of PE pipes that is convenient for maintenance according to claim 1 is characterized in that: A rotating rod (302) is fixed to the middle of the inner wall of the limiting plate (301), a rotating plate (303) is fixed to the inner wall of the rotating rod (302), a slot (304) is opened on the outer wall of the positioning plate (300), and the rotating rod (302) and the rotating plate (303) are rotatably arranged in the slot (304).

5. The device for eliminating thermal expansion and contraction of PE pipes that is convenient for maintenance according to claim 1 is characterized in that: A protective pad is provided between the positioning plate (300) and the limiting plate (301), and the material of the protective pad is rubber.

6. The device for eliminating thermal expansion and contraction of PE pipes that is convenient for maintenance according to claim 1 is characterized in that: Two positioning plates (300) are provided.

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