Protection device for expansion joint in pipeline

Abstract

The utility model relates to the technical field of expansion joints, and discloses a protection device for an expansion joint in a pipeline, which comprises the expansion joint, mounting sleeves are sleeved inside two sides of the expansion joint, and a first mounting plate and a second mounting plate are respectively and fixedly connected outside the joint of the expansion joint and the mounting sleeves. And a mounting piece is mounted outside the second mounting plate, and meanwhile limiting baffles are fixedly connected to the inner side of the mounting piece at equal intervals. According to the protection device for the expansion joint in the pipeline, a notch is formed in one side of an installation piece, the protection device can be conveniently installed outside a second installation plate through the notch, meanwhile, a protection shell is in a sheet shape, the sheet-shaped protection shell can be installed outside limiting baffles in a wrapping mode, and meanwhile the protection shell is fixed to one set of limiting baffles; and when the equipment vibrates, the limiting baffles and the protective shell synchronously stretch out and draw back, it is ensured that the expansion joint is sleeved with the protective shell, and the outer portion of the expansion joint is further protected.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to a protection device for an expansion joint in a pipeline. Background Technique

[0002] An expansion joint refers to a flexible element that can effectively compensate for axial deformation. For example, the expansion joint welded on the shell of a fixed tube-sheet heat exchanger has a large axial flexibility and is easy to deform. It can compensate for the thermal expansion difference between the tubes and the shell due to different wall temperatures, reduce their axial loads, thereby reducing the temperature difference stress between the tubes, tube sheets and the shell, and avoiding strength failure, instability failure and tube pull-off failure.

[0003] However, most of the existing expansion joints on the market are made of rubber. When the expansion joint is installed on a pipeline, if the liquid transported by the pipeline is corrosive, the expansion joint is easily corroded and damaged under the influence of factors such as pressure, temperature and corrosion. Furthermore, if the rubber inside it ruptures, it will still cause the liquid in the pipeline to splash, and the splashing corrosive liquid will cause harm to the operators. Therefore, we propose a protection device for an expansion joint in a pipeline. Content of the Utility Model

[0004] In view of the deficiencies of the existing protection devices for expansion joints in pipelines, the utility model provides a protection device for an expansion joint in a pipeline, which has the advantages of installing installation pieces outside the second mounting plate, and at the same time can control the protective shell to be wrapped outside the limit baffle, and the limit baffle and the protective shell can be telescopically adjusted, that is, reducing the interference of vibration force on the protection device, and by sleeving the protective shell outside the expansion joint, that is, avoiding the splashing of corrosive liquid, and solves the problems raised in the above background technique.

[0005] The utility model provides the following technical scheme: A protection device for an expansion joint in a pipeline, including an expansion joint, installation sleeves are sleeved inside both sides of the expansion joint, first mounting plates and second mounting plates are respectively fixedly connected to the outside of the connection between the expansion joint and the installation sleeves, installation pieces are installed outside the second mounting plate, and at the same time, limit baffles are fixedly connected at equal intervals inside the installation pieces. A protective shell is sleeved outside a group of the limit baffles, an installation groove is opened inside the protective shell, and positioning sleeves and pull ropes are respectively fixedly connected to the outside of both ends of the protective shell.

[0006] Preferably, a pipeline is connected to the outside of the installation sleeve, a sealing gasket is installed and limited inside the installation sleeve, and the sealing gasket is arranged between the connection of the expansion joint and the installation sleeve.

[0007] Preferably, fastening bolts are installed inside the installation pieces, and the fastening bolts sequentially pass through the inside of the first mounting plate, the second mounting plate and the installation pieces.

[0008] Preferably, a notch is provided in the middle of one side of the mounting piece, and an opening is provided outside the mounting piece, and the diameter of the opening is larger than the diameter of the flange spiral holes provided on the first mounting plate and the second mounting plate.

[0009] Preferably, the limiting baffle is movably sleeved inside the mounting groove, glue is adhered to the outside of one group of the limiting baffles, and the other group of the limiting baffles is movably sleeved inside the other end of the protective shell.

[0010] Preferably, the ends of the protective shell overlap each other, and at the same time, the pull rope installed on one side of the protective shell is movably sleeved inside the positioning sleeve installed on the other end, and a fastening bolt is installed inside the positioning sleeve.

[0011] Compared with the protection device of the expansion joint in the existing pipeline, the present utility model has the following beneficial effects:

[0012] 1. For the protection device of the expansion joint in the pipeline, a notch is provided on one side of the mounting piece, and it can be conveniently installed outside the second mounting plate through the notch. At the same time, the protective shell is in the shape of a thin sheet, and the thin-sheet protective shell can be wrapped and installed outside the limiting baffle. At the same time, the protective shell is fixed to one group of the limiting baffles, and the other group of the limiting baffles is sleeved inside the protective shell. When the equipment vibrates, the limiting baffle and the protective shell expand and contract synchronously to ensure that the protective shell is sleeved outside the expansion joint, and further protect the outside of the expansion joint.

[0013] 2. For the protection device of the expansion joint in the pipeline, since the protective shell is in the shape of a thin sheet, that is, after the protective shell is wrapped outside the limiting baffle, the protective shells are spliced together to form a circle, and at the same time, the two ends of the protective shell overlap each other. By controlling the positioning sleeve to be sleeved inside the pull rope, that is, the positioning sleeve and the pull rope drive the two ends of the protective shell to be fixed, improving the stability of the protective shell after splicing. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 is a schematic cross-sectional structure diagram of the main body of the present utility model;

[0016] Figure 3 is a schematic diagram of the structure of the present utility model without the expansion joint;

[0017] Figure 4 is a schematic diagram of the partially enlarged structure of the protective shell of the present utility model;

[0018] Figure 5 is a schematic diagram of the structure of the mounting piece of the present utility model;

[0019] Figure 6 is a schematic diagram of the enlarged structure at A of the present utility model.

[0020] In the figure: 1, expansion joint; 2, mounting sleeve; 3, first mounting plate; 4, second mounting plate; 5, mounting piece; 6, limiting baffle; 7, fastening bolt; 8, protective shell; 9, mounting groove; 10, positioning sleeve; 11, pull rope. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , a protection device for an expansion joint in a pipeline, including an expansion joint 1. Mounting sleeves 2 are sleeved inside both sides of the expansion joint 1. The mounting sleeves 2 and the expansion joint 1 are spliced and limited to each other. The outer parts at the connection of the expansion joint 1 and the mounting sleeves 2 are respectively fixedly connected with a first mounting plate 3 and a second mounting plate 4. The first mounting plate 3 and the second mounting plate 4 drive the connection treatment of the expansion joint 1 and the mounting sleeves 2. An installation piece 5 is installed outside the second mounting plate 4. The installation piece 5 is arranged outside the second mounting plate 4. At the same time, limiting baffles 6 are fixedly connected at equal intervals on the inner side of the installation piece 5. The limiting baffles 6 and the protective shell 8 are installed in cooperation with each other. A protective shell 8 is sleeved outside a group of limiting baffles 6. An installation groove 9 is opened on the inner side of the protective shell 8. The installation groove 9 provides an installation space for the limiting baffles 6 to prevent the position between the limiting baffles 6 and the protective shell 8 from shifting. Positioning sleeves 10 and pull ropes 11 are respectively fixedly connected to the outer parts at both ends of the protective shell 8.

[0023] Please refer to Figure 2 , a pipeline is connected to the outside of the mounting sleeve 2. A sealing gasket is installed and limited inside the mounting sleeve 2, and the sealing gasket is arranged between the connection of the expansion joint 1 and the mounting sleeve 2. By controlling the mutual sleeving and limitation between the expansion joint 1 and the mounting sleeve 2, that is, the expansion joint 1 can be installed inside the pipeline. At the same time, the expansion joint 1 is made of a flexible material. When the pipeline is squeezed or the like, by shrinking the expansion joint 1, the damage caused by the pressure to the pipeline can be reduced.

[0024] Please refer to Figure 6, a fastening bolt 7 is installed inside the mounting piece 5. The fastening bolt 7 sequentially passes through the first mounting plate 3, the second mounting plate 4 and the inside of the mounting piece 5. It is limited by the mutual socketing between the first mounting plate 3, the second mounting plate 4 and the mounting piece 5. At the same time, the fastening bolt 7 is controlled to pass through the inside of the first mounting plate 3, the second mounting plate 4 and the mounting piece 5. That is, the fastening bolt 7 drives the mounting piece 5 to be installed and limited outside the first mounting plate 3 and the second mounting plate 4, improving the stability when the equipment is spliced and installed.

[0025] Please refer to Figure 5 , a notch is opened in the middle of one side of the mounting piece 5, and an opening is opened outside the mounting piece 5. The diameter of the opening is larger than the diameter of the flange spiral holes opened on the first mounting plate 3 and the second mounting plate 4. By opening a notch on one side of the mounting piece 5, the notch facilitates driving the mounting piece 5 to be sleeved outside the mounting sleeve 2, improving the convenience when the position of the mounting piece 5 is spliced and installed. And an opening is opened inside the mounting piece 5, and the opening is installed in cooperation with the flange spiral holes opened outside the mounting sleeve 2. That is, the mounting piece 5 can be installed outside the mounting sleeve 2 through the fastening bolt.

[0026] Please refer to Figure 3 , the limiting baffle 6 is movably sleeved inside the mounting groove 9. Glue is adhered to the outside of a group of limiting baffles 6, and the other group of limiting baffles 6 is movably sleeved inside the other end of the protective shell 8. By opening a mounting groove 9 on the inner side of the protective shell 8, the protective shell 8 is sleeved outside the limiting baffle 6, and glue is adhesively installed on the outside of a group of limiting baffles 6. The glue drives the protective shell 8 to be adhesively installed outside the limiting baffle 6, and the mounting groove 9 opened on the inner side of the protective shell 8 contacts the limiting baffle 6. The stability is maintained when positioning the installation position through the mounting groove 9. At the same time, the other end of the protective shell 8 is sleeved outside the other group of limiting baffles 6. That is, the mounting piece 5 and the protective shell 8 can protect the outside of the expansion joint 1, and the protective shell 8 can be telescopically adjusted outside the limiting baffle 6. That is, when the expansion joint 1 undergoes buffering, the protective shell 8 can move outside the limiting baffle 6.

[0027] Please refer to Figure 3 , the ends of the protective shell 8 overlap each other. At the same time, the pull rope 11 installed on one side of the protective shell 8 is movably sleeved inside the positioning sleeve 10 installed at the other end. A fastening bolt is installed inside the positioning sleeve 10. Since the protective shell 8 is in a thin sheet shape in the normal state, when the equipment is installed, after the protective shell 8 is wrapped outside the limiting baffle 6, the protective shell 8 is spliced into a circle. At the same time, a positioning sleeve 10 and a pull rope 11 are installed at the ends of the protective shell 8. The pull rope 11 is controlled to pass through the inside of the positioning sleeve 10. That is, the pull rope 11 and the positioning sleeve 10 can drive the protective shell 8 to be collected and fixed, ensuring the stability when the protective shell 8 is spliced.

[0028] Working principle: When in use, the installation sleeve 2 is sleeved outside the expansion joint 1. At the same time, an installation piece 5 is sleeved outside the second installation plate 4 installed on the side of the installation sleeve 2. The two groups of installation pieces 5 are respectively sleeved outside the two groups of second installation plates 4. At the same time, fastening bolts 7 are installed between the joints of the installation piece 5, the second installation plate 4 and the first installation plate 3 to ensure the convenience of installing the installation piece 5. At the same time, a notch is opened on the outside of the installation piece 5, which facilitates driving the installation piece 5 to be arranged outside the second installation plate 4. At the same time, a thin protective shell 8 is sleeved outside the limit baffle 6. At the same time, the installation groove 9 opened at one end of the protective shell 8 is sleeved outside a group of limit baffles 6, and glue is adhered to the outside of a group of limit baffles 6 to improve the stability of the protective shell 8 when splicing and limiting outside the limit baffle 6. And the other end of the protective shell 8 is sleeved at the position of the other group of limit baffles 6. When the expansion joint 1 expands and contracts for buffering during use, the position of the limit baffle 6 inside the protective shell 8 can be adjusted, that is, the limit baffle 6 and the protective shell 8 can move relative to each other without interfering with the vibration.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protection device for expansion joints in a pipeline, comprising an expansion joint (1). An installation sleeve (2) is sleeved inside both sides of the expansion joint (1). First mounting plates (3) and second mounting plates (4) are fixedly connected to the outer parts at the connection of the expansion joint (1) and the installation sleeve (2) respectively. It is characterized in that: An installation piece (5) is installed on the outside of the second installation plate (4). Meanwhile, limiting baffles (6) are fixedly connected at equal intervals on the inner side of the installation piece (5). A protective shell (8) is sleeved outside a group of the limiting baffles (6). An installation groove (9) is formed on the inner side of the protective shell (8). Positioning sleeves (10) and a pull rope (11) are respectively fixedly connected to the outer parts of both ends of the protective shell (8).

2. The protection device for an expansion joint in a pipeline according to claim 1, characterized in that: A pipeline is connected to the outside of the installation sleeve (2). A sealing gasket is installed and limited inside the installation sleeve (2), and the sealing gasket is arranged between the expansion joint (1) and the connection part of the installation sleeve (2).

3. The protection device for an expansion joint in a pipeline according to claim 1, characterized in that: A fastening bolt (7) is installed inside the installation piece (5), and the fastening bolt (7) sequentially passes through the inside of the first installation plate (3), the second installation plate (4) and the installation piece (5).

4. The protection device for an expansion joint in a pipeline according to claim 1, characterized in that: A notch is formed in the middle of one side of the installation piece (5). An opening is formed on the outside of the installation piece (5), and the diameter of the opening is larger than the diameter of the flange spiral holes formed on the first installation plate (3) and the second installation plate (4).

5. The protection device for an expansion joint in a pipeline according to claim 1, characterized in that: The limiting baffles (6) are movably sleeved inside the installation groove (9). Glue is adhered to the outside of a group of the limiting baffles (6), and the other group of the limiting baffles (6) is movably sleeved inside the other end of the protective shell (8).

6. The protection device for expansion joints in a pipeline according to claim 1, characterized in that: The ends of the protective shell (8) overlap each other. Meanwhile, the pull rope (11) installed on one side of the protective shell (8) is movably sleeved inside the positioning sleeve (10) installed at the other end, and a fastening bolt is installed inside the positioning sleeve (10).

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