Telescopic compensation connecting structure of coal mine pipeline

Abstract

The utility model belongs to the technical field of pipeline compensation, and discloses a coal mine pipeline telescopic compensation connecting structure which comprises a corrugated compensator, the corrugated compensator comprises a corrugated pipe and connecting flanges symmetrically arranged at the two ends of the corrugated pipe, and supporting assemblies are arranged on the connecting flanges. The supporting assembly comprises a fixed disc, a movable disc, a first movable rod, a second movable rod and a fixed rod, one end of the first movable rod is connected with the movable disc, the other end of the first movable rod extends into the fixed disc to be connected with the second movable rod, one end of the second movable rod is inserted into the fixed disc, and the other end of the second movable rod is inserted into the fixed rod; the fixing rod is connected to the end, away from the first moving rod, of the fixing disc. The supporting assembly is arranged, synchronous mounting and dismounting of the multiple supporting rods can be achieved through the supporting assembly, the supporting rods do not need to be mounted and dismounted one by one, the efficiency of mounting and dismounting of the supporting rods is improved, and meanwhile mounting and dismounting of the supporting rods are facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline compensation technology, specifically relating to a coal mine pipeline expansion and contraction compensation connection structure. Background Technology

[0002] Expansion and contraction compensation connection structures for coal mine pipelines are devices used in underground or surface pipeline systems in coal mines to compensate for the expansion and contraction of pipelines caused by factors such as thermal expansion and contraction and foundation settlement. Existing expansion and contraction compensation connection structures for coal mine pipelines generally include corrugated compensator connection structures, sleeve compensator connection structures, spherical compensator connection structures, and square compensator connection structures.

[0003] A bellows compensator typically consists of a bellows and flanges. Its main function is to compensate for length changes in a piping system caused by temperature variations, vibration, or installation errors, while also absorbing vibrations and impacts. Currently, bellows compensators are usually transported using support rods and nuts to secure the bellows between two flanges, ensuring the bellows is securely fixed during transport. However, this requires disassembly after installation, and the large number of support rods and nuts makes both installation and disassembly cumbersome. Utility Model Content

[0004] The purpose of this utility model is to provide a coal mine pipeline expansion and contraction compensation connection structure to solve the problem mentioned in the background art, which is that the large number of support rods and nuts makes installation and disassembly more troublesome.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mine pipeline expansion and contraction compensation connection structure, including a corrugated compensator. The corrugated compensator includes a corrugated pipe and connecting flanges symmetrically arranged at both ends of the corrugated pipe. A support assembly is provided on the connecting flange. The support assembly includes a fixed plate, a movable plate, a first movable rod, a second movable rod, and a fixed rod. One end of the first movable rod is connected to the movable plate, and the other end extends into the interior of the fixed plate and is connected to the second movable rod. One end of the second movable rod is inserted into the fixed plate, and the other end is inserted into the fixed rod. The fixed rod is connected to the end of the fixed plate away from the first movable rod.

[0006] Preferably, the fixed plate has an internal mounting cavity, and the movable plate connecting the first movable rod and the second movable rod is located in the mounting cavity. A first spring is sleeved on the end of the first movable rod near the movable plate, and a second spring is sleeved on the end of the second movable rod near the movable plate.

[0007] Preferably, the end of the fixing rod away from the fixing plate has a bead groove, and a limiting bead is embedded in the bead groove.

[0008] Preferably, the fixing rod has a hollow structure, and the hollow cavity of the fixing rod is connected to the bead groove.

[0009] Preferably, the second movable rod includes a long rod, a first short rod, a second short rod, a third short rod, and a limiting short rod, wherein the first short rod is connected between the long rod and the second short rod, the second short rod is connected between the first short rod and the third short rod, and the third short rod is connected between the second short rod and the limiting short rod.

[0010] Preferably, the first short rod and the third short rod have the same structure, and the diameter of the second short rod is larger than the diameters of the first short rod and the third short rod.

[0011] Preferably, the cross-sectional diameter of the limiting bead is larger than the groove diameter of the bead groove.

[0012] Preferably, when the limiting bead abuts against the first short rod or the third short rod at one end of the hollow cavity of the fixing rod, the limiting bead is completely located in the bead groove; when the limiting bead abuts against the third short rod at one end of the hollow cavity of the fixing rod, one end of the limiting bead penetrates the bead groove and extends to the outside of the bead groove.

[0013] Preferably, the connecting flange has a through hole that allows the fixing rod to pass through.

[0014] Preferably, the ends of the first spring and the second spring furthest from the moving plate abut against the inner wall of the mounting cavity.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) The present invention is provided with a support component, which enables the synchronous installation and disassembly of multiple support rods without the need to install and disassemble them one by one, thereby improving the efficiency of support rod installation and disassembly and facilitating the installation and disassembly of support rods.

[0017] (2) This utility model achieves the limitation and fixation of two connecting flanges by using the combination of limiting beads, fixing rod and moving rod, which abandons the traditional method of fixing with nuts and improves the fixing efficiency. At the same time, the locking and unlocking of multiple limiting beads are also carried out simultaneously, which improves the disassembly and assembly efficiency of the support components and makes it convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the support component of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the second moving rod and the fixed rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first moving rod and the second moving rod of this utility model;

[0022] In the diagram: 1-Bellwall; 2-Connecting flange; 3-Fixed plate; 4-Moving plate; 5-First moving rod; 6-Second moving rod; 61-Long rod; 62-First short rod; 63-Second short rod; 64-Third short rod; 65-Limiting short rod; 7-Fixed rod; 8-Mounting cavity; 9-Moving plate; 10-First spring; 11-Second spring; 12-Bead groove; 13-Limiting bead. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 As shown, this utility model provides a technical solution: a coal mine pipeline expansion and contraction compensation connection structure, including a corrugated compensator. The corrugated compensator includes a corrugated pipe 1 and connecting flanges 2 symmetrically arranged at both ends of the corrugated pipe 1. A support assembly is provided on the connecting flanges 2. The support assembly includes a fixed plate 3, a movable plate 4, a first movable rod 5, a second movable rod 6, and a fixed rod 7. One end of the first movable rod 5 is connected to the movable plate 4, and the other end extends into the interior of the fixed plate 3 and is connected to the second movable rod 6. One end of the second movable rod 6 is inserted into the fixed plate 3, and the other end is inserted into the fixed rod 7. The fixed rod 7 is connected to the end of the fixed plate 3 away from the first movable rod 5.

[0025] The fixed plate 3 has an installation cavity 8 inside. The movable plate 9 connecting the first movable rod 5 and the second movable rod 6 is located in the installation cavity 8. The first movable rod 5 is fitted with a first spring 10 at the end near the movable plate 9, and the second movable rod 6 is fitted with a second spring 11 at the end near the movable plate 9.

[0026] The ends of the first spring 10 and the second spring 11 furthest from the moving plate 9 respectively abut against the inner wall of the mounting cavity 8.

[0027] like Figure 3 As shown, a bead groove 12 is provided at the end of the fixing rod 7 away from the fixing plate 3. A limiting bead 13 is embedded in the bead groove 12. The cross-sectional diameter of the limiting bead 13 is larger than the groove diameter of the bead groove 12, so that the limiting bead 13 cannot be removed from the bead groove 12.

[0028] The fixing rod 7 has a hollow structure, and the hollow cavity of the fixing rod 7 is connected to the bead groove 12, so that the limiting bead 13 can move in the bead groove 12 and the hollow cavity.

[0029] like Figure 3 As shown, the second moving rod 6 includes a long rod 61, a first short rod 62, a second short rod 63, a third short rod 64, and a limiting short rod 65. The first short rod 62 is connected between the long rod 61 and the second short rod 63, the second short rod 63 is connected between the first short rod 62 and the third short rod 64, and the third short rod 64 is connected between the second short rod 63 and the limiting short rod 65. The first short rod 62 and the third short rod 64 have the same structure, and the diameter of the second short rod 63 is larger than the diameters of the first short rod 62 and the third short rod 64.

[0030] When the end of the limiting bead 13 located in the hollow cavity of the fixing rod 7 abuts against the first short rod 62 or the third short rod 64, the limiting bead 13 is completely located in the bead groove 12. When the end of the limiting bead 13 located in the hollow cavity of the fixing rod 7 abuts against the third short rod 64, one end of the limiting bead 13 passes through the bead groove 12 and extends to the outside of the bead groove 12.

[0031] In the above technical solution, when installing the support assembly, the movable disk 4 is pressed towards the fixed disk 3, causing the movable disk 4 to move the first movable rod 5. The movement of the first movable rod 5 causes the movable plate 9 to move and compress the second spring 11, stretching the first spring 10. At the same time, the movable plate 9 moves the long rod 61, thereby causing the first short rod 62, the second short rod 63, the third short rod 64, and the limiting short rod 65 to move synchronously, so that the first short rod 62 moves to the position of the limiting bead 13. At this time, the fixed rod 7 is inserted into the through hole on the connecting flange 2. Since the distance between the limiting bead 13 and the first short rod 62 is greater than the distance between the limiting bead 13 and the second short rod 63, the fixed rod 7 is inserted into the through hole on the connecting flange 2. Therefore, the limiting bead 13 can fully enter the bead groove 12, allowing the fixing rod 7 to pass through the through hole on the flange 2. Then, the moving plate 4 is released, and under the elastic force of the second spring 11 and the first spring 10, the second short rod 63 is reset, thereby driving the limiting bead 13 through the bead groove 12 and extending to the outside of the bead groove 12. The part of the limiting bead 13 extending to the outside of the bead groove 12 forms a limit with the flange 2, thereby fixing the bellows 1 between the two connecting flanges 2. When disassembling, it is only necessary to move the moving plate 4 in the opposite direction so that the limiting bead 13 can fully enter the bead groove 12 again, thus realizing the disassembly of the support component, which is convenient for use.

[0032] The connecting flange 2 has a through hole that allows the fixing rod 7 to pass through, so that the two connecting flanges 2 can be fixed together by the fixing rod 7.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mine pipeline expansion and contraction compensation connection structure, comprising a corrugated compensator, the corrugated compensator comprising a corrugated pipe (1) and connecting flanges (2) symmetrically arranged at both ends of the corrugated pipe (1), the connecting flanges (2) being provided with a support assembly, the support assembly comprising a fixed plate (3), a movable plate (4), a first movable rod (5), a second movable rod (6) and a fixed rod (7), one end of the first movable rod (5) being connected to the movable plate (4), the other end extending into the interior of the fixed plate (3) and connected to the second movable rod (6), one end of the second movable rod (6) being inserted into the fixed plate (3), the other end being inserted into the fixed rod (7), the fixed rod (7) being connected to the end of the fixed plate (3) away from the first movable rod (5).

2. The coal mine pipeline telescopic compensation connecting structure according to claim 1, characterized in that: The fixed plate (3) has an installation cavity (8) inside. The moving plate (9) connecting the first moving rod (5) and the second moving rod (6) is located in the installation cavity (8). The first moving rod (5) is fitted with a first spring (10) at one end near the moving plate (9), and the second moving rod (6) is fitted with a second spring (11) at one end near the moving plate (9).

3. The coal mine pipeline telescopic compensation connecting structure according to claim 1, characterized in that: The fixed rod (7) has a bead groove (12) at one end away from the fixed plate (3), and a limiting bead (13) is embedded in the bead groove (12).

4. The coal mine pipeline telescopic compensation connecting structure according to claim 3, characterized in that: The fixing rod (7) is a hollow structure, and the hollow cavity of the fixing rod (7) is connected to the bead groove (12).

5. The coal mine pipeline telescopic compensation connecting structure according to claim 3, characterized in that: The second moving rod (6) includes a long rod (61), a first short rod (62), a second short rod (63), a third short rod (64), and a limiting short rod (65). The first short rod (62) is connected between the long rod (61) and the second short rod (63). The second short rod (63) is connected between the first short rod (62) and the third short rod (64). The third short rod (64) is connected between the second short rod (63) and the limiting short rod (65).

6. The coal mine pipeline telescopic compensation connecting structure according to claim 5, characterized in that: The first short rod (62) and the third short rod (64) have the same structure, and the diameter of the second short rod (63) is larger than the diameters of the first short rod (62) and the third short rod (64).

7. The coal mine pipeline telescopic compensation connecting structure according to claim 3, characterized in that: The cross-sectional diameter of the limiting bead (13) is larger than the groove diameter of the bead groove (12).

8. The coal mine pipeline telescopic compensation connecting structure according to claim 6, characterized in that: When the limiting bead (13) is located at one end of the cavity of the fixed rod (7) and abuts against the first short rod (62) or the third short rod (64), the limiting bead (13) is completely located in the bead groove (12). When the limiting bead (13) is located at one end of the cavity of the fixed rod (7) and abuts against the third short rod (64), one end of the limiting bead (13) passes through the bead groove (12) and extends to the outside of the bead groove (12).

9. The coal mine pipeline telescopic compensation connecting structure according to claim 1, characterized in that: The connecting flange (2) has a through hole that allows the fixing rod (7) to pass through.

10. The coal mine pipeline telescopic compensation connecting structure according to claim 2, characterized in that: The ends of the first spring (10) and the second spring (11) away from the moving plate (9) respectively abut against the inner wall of the mounting cavity (8).

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