Pendulum type support for pipeline

Abstract

The utility model relates to a swing type support for a pipeline, and belongs to the technical field of pipeline supports. Comprising a base, a lower arc plate and an upper arc plate, the lower arc plate and the upper arc plate are arranged above the base, the upper arc plate is detachably connected to the upper portion of the lower arc plate, rocker arm mechanisms are arranged at the two ends, corresponding to the lower arc plate, of the base in the length direction, the upper ends of the rocker arm mechanisms abut against the two ends of the lower arc plate respectively, and the bottom ends of the rocker arm mechanisms are rotationally connected with the base; guide mechanisms are arranged on the base, correspond to the guide seats, and are arranged on two sides of the guide seats along the length direction of the base. According to the utility model, the support for the axial movement of the pipeline is realized, the horizontal radial displacement of the pipeline is limited, the additional stress on the whole pipeline caused by the radial displacement of the pipeline is avoided, the support effect of the pipeline is improved, and the operation safety of the whole pipeline and equipment is ensured.

Description

Technical Field

[0001] The utility model relates to a swing-type support for a pipeline, and belongs to the technical field of pipeline supports. Background Art

[0002] Pipeline pendulum supports are mainly used to support and protect pipelines in petrochemical, thermal power, and nuclear power plants. They balance the forces of the pipeline system, limit pipeline displacement, and absorb vibration, thereby ensuring the safety and stable operation of the pipeline system. When transporting media, the pipeline will expand or contract due to temperature changes. The pendulum support allows the pipeline to expand and contract freely within a certain range, thereby avoiding damage to the pipeline due to excessive thermal stress. The pendulum support also has the function of supporting the weight of the pipeline and its contents, ensuring that the pipeline is stably installed according to the designed height and position.

[0003] With the rapid development of petrochemical, hydropower and infrastructure industries in my country, more and larger-sized pipelines are also used in the transportation of various gases and liquids. The demand for pendulum supports for pipelines is also increasing year by year. The pendulum supports commonly used in the market can only play a supporting role, but cannot reasonably assist the horizontal axial displacement of the pipeline and limit the horizontal radial displacement of the pipeline. The horizontal axial displacement caused by normal thermal expansion and contraction of the pipeline can be maintained, but excessive horizontal radial displacement will cause greater additional stress on the pipeline as a whole, causing shaking and instability of the pipeline.

[0004] A Chinese patent (CN216867732U) discloses a long-life pendulum-type bracket, which relates to the field of pipe brackets, and includes a mounting seat and a support ring. Support plates are provided at both ends of the mounting seat in the length direction. A rotating shaft is fixed to the lower end of the support plate. The rotating shaft is arranged along the length direction of the mounting seat. Both ends of the rotating shaft are rotatably connected to the mounting seat. The upper end surface of the support plate is an arc surface coaxial with the rotating shaft. The support ring includes an upper ring and a lower ring. The upper ring is detachably connected to the upper part of the lower ring. The upper ends of the two support plates are respectively abutted against the two ends of the lower ring. A load-bearing plate is provided in the middle position of the lower ring. The lower end of the load-bearing plate abuts against the mounting seat. The present application sets a load-bearing plate under the support frame to share the pressure on the support plate. The arc surface on the upper end of the support plate is not easily deformed, which is beneficial to prolonging the service life.

[0005] The problem with the above patent is that it can only support the pipeline, but cannot guide the horizontal axial movement of the pipeline, nor can it limit the horizontal radial movement of the pipeline. Utility Model Content

[0006] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a pendulum-type support for pipelines, which not only supports the axial movement of the pipelines, but also limits the horizontal radial displacement of the pipelines, thereby avoiding the additional stress on the overall pipelines caused by the radial displacement of the pipelines, improving the supporting effect of the pipelines, and ensuring the safe operation of the overall pipelines and equipment.

[0007] The utility model discloses a pendulum type support for a pipeline, comprising a base, a lower arc plate and an upper arc plate placed above the base, the upper arc plate being detachably connected to the top of the lower arc plate, rocker mechanisms are provided at both ends of the base in the length direction corresponding to the lower arc plate, the upper ends of the rocker mechanisms are respectively abutted against the two ends of the lower arc plate, the bottom ends of the rocker mechanisms are rotatably connected to the base, a guide seat is provided at the middle bottom of the lower arc plate, a guide mechanism is provided on the base corresponding to the guide seat, and the guide mechanism is provided on both sides of the guide seat along the length direction of the base.

[0008] The on-site pipeline is fixed by setting the upper arc plate and the lower arc plate, which are detachably connected by fastening bolts. By setting the rocker mechanism, when the pipeline produces horizontal axial displacement due to thermal expansion and contraction, the rocker mechanism rotates, and the supporting force on the pipeline remains unchanged, so as to achieve the free axial horizontal displacement of the pipeline. When the pipeline is subjected to external force and produces horizontal radial displacement, the guide mechanism will limit the displacement of the guide seat in the horizontal radial direction, preventing the pipeline from producing excessive horizontal radial displacement, thereby avoiding damage to the pipeline and equipment caused by excessive additional stress.

[0009] The rocker mechanism includes a rocker arm, a rotating sleeve is fixed at the bottom of the rocker arm, a rotating shaft is arranged in the rotating sleeve, a rotating bearing is arranged on the base corresponding to the rotating shaft, the rotating shaft is rotatably connected with the rotating bearing, and the upper end surface of the rocker arm is an arc surface coaxial with the rotating shaft. The rocker arm will roll with the axial movement of the pipeline, does not limit the axial displacement of the pipeline, and at the same time plays a supporting role for the pipeline.

[0010] A rolling plate is arranged on the top of the rocker arm, and the shape of the rolling plate matches the shape of the top of the rocker arm. The width of the rolling plate along the length direction of the base is greater than the width of the rocker arm along the length direction of the base. When the pipeline undergoes horizontal axial displacement due to thermal expansion and contraction, the rolling plate arranged on the top of the rocker arm will roll along with the movement of the pipeline. The width of the rolling plate is greater than the width of the rocker arm, thereby increasing the contact area with the lower arc plate and reducing the pressure on the rocker arm.

[0011] The two ends of the lower arc plate are provided with ear plates and baffles corresponding to the rocker arm, the rocker arm abuts against the ear plates, the baffles are provided in parallel with the rocker arm, the ear plates, baffles and the lower arc plate form a cavity with an opening at the bottom, and the rocker arm is placed in the cavity, so as to prevent the lower arc plate from being separated from the rocker arm when the lower arc plate moves too much in the horizontal radial direction or too much in the axial direction along with the pipeline.

[0012] The rocker arm is provided with pre-installed fixing bolts, which connect the baffle plate to the rocker arm. During installation, the rocker arm and the lower arc plate need to be pre-installed, that is, the rocker arm and the baffle plate are fixedly connected by pre-installed fixing bolts. The pre-installed offset distance is determined according to the actual on-site horizontal axial displacement. After the on-site installation is completed, the pre-installed fixing bolts are removed, and the rocker arm can rotate freely with the horizontal axial movement of the pipeline, thereby improving the accuracy and efficiency of on-site installation.

[0013] The guide mechanism includes a guide fixing seat, a roller fixing seat, an adjusting bolt and a guide roller. The guide roller is arranged corresponding to the guide seat. The guide fixing seat is detachably connected to the base. The guide roller is installed on the roller fixing seat. The roller fixing seat is connected to the guide fixing seat through an adjusting bolt. When the horizontal axial displacement of the pipeline is caused by thermal expansion and contraction, the guide seat will move with the movement of the lower arc plate. At this time, the base does not move, so the guide roller and the guide seat move relative to each other, and rolling friction occurs between the guide roller and the guide seat. The friction force is small and the influence on the movement of the guide seat is small. At the same time, it plays a guiding role in the horizontal axial movement of the guide seat. In addition, when the guide seat has a horizontal radial displacement with the pipeline, the guide roller will generate a reaction force on the guide seat, thereby limiting the radial displacement of the pipeline.

[0014] The adjusting bolt is connected to the roller fixing seat by threads. By screwing the adjusting bolt, the position of the roller fixing seat can be adjusted, thereby adjusting the distance between the guide roller and the guide seat, thereby limiting the displacement of the guide seat in the horizontal radial direction and preventing excessive displacement of the pipeline in the horizontal radial direction.

[0015] The gap between the guide roller and the guide seat is between 1.5 mm and 2 mm. The gap between the guide roller and the guide seat facilitates the installation of the guide roller and allows the guide seat to deviate in the radial direction.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The utility model fixes the on-site pipeline by setting an upper arc plate and a lower arc plate, and the upper arc plate and the lower arc plate are detachably connected by fastening bolts. By setting a rocker mechanism, when the pipeline produces horizontal axial displacement due to thermal expansion and contraction, the rocker mechanism rotates, and the supporting force on the pipeline remains unchanged, thereby realizing the axial horizontal free displacement of the pipeline. When the pipeline is subjected to external force and produces horizontal radial displacement, the guide mechanism will limit the displacement of the guide seat in the horizontal radial direction, preventing the pipeline from producing excessive horizontal radial displacement, thereby avoiding damage to the pipeline and equipment caused by excessive additional stress.

[0018] (2) The rocker mechanism includes a rocker arm, the top of which is in contact with both ends of the lower arc plate, the bottom of which is fixed with a rotating shaft, a rotating sleeve is provided on the base corresponding to the rotating shaft, the rotating shaft is rotatably connected with the rotating sleeve, and the upper end surface of the rocker arm is an arc surface coaxial with the rotating shaft. The rocker arm will roll with the axial movement of the pipeline, without limiting the axial displacement of the pipeline, and at the same time plays a supporting role for the pipeline.

[0019] (3) The guide mechanism includes a guide fixing seat, a roller fixing seat, an adjusting bolt and a guide roller. The guide roller is arranged corresponding to the guide seat. The guide fixing seat is detachably connected to the base. The guide roller is installed on the roller fixing seat. The roller fixing seat is connected to the guide fixing seat through an adjusting bolt. When the horizontal axial displacement of the pipeline is caused by thermal expansion and contraction, the guide seat will move with the movement of the lower arc plate. At this time, the base does not move, so the guide roller and the guide seat move relative to each other, and rolling friction occurs between the guide roller and the guide seat. The friction force is small and the effect on the movement of the guide seat is small. At the same time, it plays a guiding role in the horizontal axial movement of the guide seat. In addition, when the guide seat has a horizontal radial displacement with the pipeline, the guide roller will generate a reaction force on the guide seat, thereby limiting the radial displacement of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of the present utility model;

[0021] Figure 2 It is a left-side structural schematic diagram of Embodiment 1 of the present utility model;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the rocker arm mechanism of Example 1 of the utility model;

[0023] Figure 4 It is a schematic diagram of the main structure of the guide mechanism of Example 1 of the utility model.

[0024] In the figure: 1. base; 2. rotating sleeve; 3. oil hole; 4. rocker arm; 5. rib plate; 6. baffle; 7. reinforcement plate; 8. upper arc plate; 9. lower arc plate; 10. rotating bearing; 11. guide fixing seat; 12. adjusting bolt; 13. guide roller; 14. pre-installed fixing seat; 15. guide seat; 16. roller fixing seat; 17. rotating shaft; 18. pre-installed fixing bolt; 19. rolling plate; 20. tightening bolt; 21. ear plate; H, pre-biased distance. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with embodiments:

[0026] Example 1

[0027] like Figure 1 to Figure 4As shown, a pendulum-type support for a pipeline described in the utility model comprises a base 1, a lower arc plate 9 and an upper arc plate 8 placed above the base 1. The base 1 is composed of two channel steels and a fixed plate, and mainly bears the weight of the entire support. The upper arc plate 8 is installed above the lower arc plate 9 by fastening bolts 20. The fastening bolts 20 adopt a thick nut plus a thin nut to prevent the nuts from detaching due to long-term displacement. A reinforcing plate 7 is arranged on the upper arc plate 8. Rocker mechanisms are arranged at both ends of the length direction of the base 1 corresponding to the lower arc plate 9. The upper ends of the rocker mechanisms are respectively abutted against the two ends of the lower arc plate 9, and the bottom end of the rocker mechanism is rotatably connected to the base 1. A guide seat 15 is arranged at the middle bottom of the lower arc plate 9. A guide mechanism is arranged on the base 1 corresponding to the guide seat 15, and the guide mechanism is arranged on both sides of the guide seat 15 along the length direction of the base 1.

[0028] A pre-installed fixing seat 14 is arranged between the guide seat 15 and the base 1. Before pre-installation, the guide seat 15 and the base 1 are connected together through the pre-installed fixing seat 14 with bolts to prevent the position of the guide seat 15 from moving during transportation and installation. After pre-installation, the pre-installed fixing seat 14 is removed.

[0029] like Figure 1-Figure 3 As shown, the rocker mechanism includes a rocker 4, a rib plate 5 is arranged on the rocker 4 to increase the strength of the rocker 4, the top of the rocker 4 is in contact with the two ends of the lower arc plate 9, a rotating sleeve 2 is fixed at the bottom of the rocker 4, the bottom of the rocker 4 is welded and connected to the rotating sleeve 2, a rotating shaft 17 is arranged in the rotating sleeve 2, a rotating bearing 10 is arranged on the base 1 corresponding to the rotating shaft 17, the rotating shaft 17 is rotatably connected to the rotating bearing 10, an oil hole 3 is arranged on the rotating sleeve 2 to facilitate the addition of lubricating oil, and the upper end face of the rocker 4 is an arc surface coaxial with the rotating shaft 17. The rocker 4 will roll with the movement of the pipeline in the axial direction, without limiting the axial displacement of the pipeline, and at the same time play a supporting role for the pipeline.

[0030] A rolling plate 19 is arranged on the top of the rocker arm 4, and the shape of the rolling plate 19 matches the shape of the top of the rocker arm 4. The width of the rolling plate 19 along the length direction of the base 1 is greater than the width of the rocker arm 4 along the length direction of the base 1. When the pipeline moves horizontally axially, the rolling plate 19 is driven to rotate around the rotating shaft 17, thereby supporting the lower arc plate 9.

[0031] Ear plates 21 and baffles 6 are provided at both ends of the lower arc plate 9 corresponding to the rocker arm 4, the rocker arm 4 abuts against the ear plates 21, the baffles 6 are provided in parallel with the rocker arm 4, the ear plates 21, the baffles 6 and the lower arc plate 9 form a cavity with an opening at the bottom, and the rocker arm 4 is placed in the cavity. This prevents the lower arc plate 9 from being separated from the rocker arm 4 when the lower arc plate 9 moves too much horizontally radially or too much axially with the pipeline.

[0032] The rocker arm 4 is provided with a pre-installed fixing bolt 18, which connects the baffle 6 to the rocker arm 4. During installation, the rocker arm 4 and the lower arc plate 9 need to be pre-installed, that is, the rocker arm 4 and the baffle 6 are fixedly connected by the pre-installed fixing bolt 18. The pre-installed offset distance H is determined according to the actual on-site horizontal axial displacement, such as Figure 2 As shown, after the on-site installation is completed, the pre-installed fixing bolts 18 are removed, and the rocker arm 4 can rotate freely along with the horizontal axial movement of the pipeline, thereby improving the accuracy and efficiency of the on-site installation.

[0033] like Figure 1 and Figure 4 As shown, the guide mechanism includes a guide fixing seat 11, a roller fixing seat 16, an adjusting bolt 12 and a guide roller 13. The guide roller 13 is arranged corresponding to the guide seat 15. The guide fixing seat 11 is detachably connected to the base 1 by bolts. The guide roller 13 is installed on the roller fixing seat 16. The roller fixing seat 16 is connected to the guide fixing seat 11 by the adjusting bolt 12. The width of the guide seat 15 along the axial direction of the pipeline meets the maximum requirement of the axial displacement of the pipeline, so as to prevent the guide seat 15 from being separated from the restraint of the guide roller 13 when the axial movement distance of the pipeline is too large.

[0034] The adjusting bolt 12 is connected to the roller fixing seat 16 by threads. The gap between the guide roller 13 and the guide seat 15 is between 1.5 mm and 2 mm.

[0035] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A pendulum support for a pipeline, characterized in that: The utility model comprises a base (1), a lower arc plate (9) and an upper arc plate (8) arranged above the base (1); the upper arc plate (8) is detachably connected to the upper part of the lower arc plate (9); rocker mechanisms are arranged at both ends of the base (1) in the length direction corresponding to the lower arc plate (9); the upper ends of the rocker mechanisms are respectively abutted against the two ends of the lower arc plate (9); the bottom ends of the rocker mechanisms are rotatably connected to the base (1); a guide seat (15) is arranged at the middle bottom of the lower arc plate (9); a guide mechanism is arranged on the base (1) corresponding to the guide seat (15); and the guide mechanism is arranged on both sides of the guide seat (15) along the length direction of the base (1).

2. The pendulum support for pipeline according to claim 1, characterized in that: The rocker mechanism comprises a rocker arm (4), the top end of the rocker arm (4) abuts against two ends of a lower arc plate (9), a rotating sleeve (2) is fixedly arranged at the bottom end of the rocker arm (4), a rotating shaft (17) is arranged in the rotating sleeve (2), a rotating bearing (10) is arranged on the base (1) corresponding to the rotating shaft (17), the rotating shaft (17) is rotatably connected to the rotating bearing (10), and the upper end surface of the rocker arm (4) is an arc surface coaxial with the rotating shaft (17).

3. The pendulum support for pipeline according to claim 2, characterized in that: A rolling plate (19) is arranged on the top of the rocker arm (4); the shape of the rolling plate (19) is adapted to the outer shape of the top of the rocker arm (4); and the width of the rolling plate (19) along the length direction of the base (1) is greater than the width of the rocker arm (4) along the length direction of the base (1).

4. The pendulum support for pipeline according to claim 2, characterized in that: Ear plates (21) and baffle plates (6) are arranged at two ends of the lower arc plate (9) corresponding to the rocker arm (4); the rocker arm (4) abuts against the ear plates (21); the baffle plates (6) and the rocker arm (4) are arranged parallel to each other; the ear plates (21), the baffle plates (6) and the lower arc plate (9) enclose a cavity with an opening at the bottom; the rocker arm (4) is placed in the cavity.

5. The pendulum support for pipeline according to claim 4, characterized in that: A pre-installed fixing bolt (18) is arranged on the rocker arm (4), and the pre-installed fixing bolt (18) connects the baffle plate (6) and the rocker arm (4).

6. The pipeline pendulum support according to any one of claims 1 to 5, characterized in that: The guide mechanism comprises a guide fixing seat (11), a roller fixing seat (16), an adjusting bolt (12) and a guide roller (13); the guide roller (13) is arranged corresponding to the guide seat (15); the guide fixing seat (11) is detachably connected to the base (1); the guide roller (13) is mounted on the roller fixing seat (16); and the roller fixing seat (16) is connected to the guide fixing seat (11) via the adjusting bolt (12).

7. The pendulum support for pipeline according to claim 6, characterized in that: The adjusting bolt (12) is connected to the roller fixing seat (16) through threads.

8. The pendulum support for pipeline according to claim 6, characterized in that: The gap between the guide roller (13) and the guide seat (15) is between 1.5 mm and 2 mm.

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