Self-balancing universal pipe anti-vibration device

Abstract

The present invention provides a self-balancing universal pipe seismic absorber, which relates to the technical field of pipe seismic absorption. The pipe seismic absorber includes: an intermediate pipe and two sets of seismic absorption components; the two sets of seismic absorption components are symmetrically arranged on both sides of the intermediate pipe in the axial direction; the outer wall of the intermediate pipe is provided with a support plate, and guide rings and a first head are symmetrically arranged on both sides of the support plate; the seismic absorption components include: a connecting pipe, an end ring, a second head, a first outer cylinder, a second outer cylinder, a movable ring, a first bellows, a second bellows, a third bellows and a universal coupling. In the present invention, the first outer cylinder and the second outer cylinder can achieve relative displacement through the deformation of the first bellows, the intermediate pipe and the connecting pipe can achieve relative displacement through the deformation of the second bellows, and the intermediate pipe and the first outer cylinder can achieve relative displacement through the deformation of the third bellows; so that the pipe seismic absorber can adapt to the offset requirements of the seismic absorption design without leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline anti-seismic technology, and in particular to a self-balancing universal pipeline anti-seismic device. Background Art

[0002] The overall structure of modern construction industry is getting bigger and bigger, and the earthquake resistance design of buildings is becoming more and more advanced. The new design concept is the elastic sliding contact between the foundation and the building, and a building seismic damper is used. That is, the entire building above the ground is separated from the underground foundation by this damper, so as to achieve earthquake resistance. In earthquake resistance design, according to the nature of the building, the seismic fortification intensity is required to reach six or eight degrees.

[0003] Every building is equipped with numerous piping systems, most of which are located in underground pipe corridors. Therefore, when pipes exit the underground pipe corridors or enter above-ground buildings, the potential for sudden deformation of the pipes during seismic deformation must be considered. Ensure that the pipes do not rupture during deformation, causing secondary damage.

[0004] Because the pipelines are supported and fixed within the corridor and also within the building, a pipe seismic device is required to connect the foundation to the pipelines inside the building. When the building is designed for eight-degree earthquake resistance, some design institutes require a relative horizontal sliding distance between the building and the foundation of no less than 400mm, and a vertical sliding distance of no less than 200mm.

[0005] However, current pipeline seismic isolators are difficult to adapt to the offset requirements of seismic design without leakage. Summary of the Invention

[0006] (1) Technical problems solved

[0007] In view of the shortcomings of the existing technology, the present invention provides a self-balancing universal pipeline seismic device, which solves the problem that the pipeline seismic device cannot meet the offset requirements of the seismic design.

[0008] (2) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A self-balancing universal pipeline seismic device, comprising: an intermediate pipe and two sets of seismic components; the two sets of seismic components are symmetrically arranged on both sides of the intermediate pipe in an axial direction;

[0011] The outer wall of the intermediate tube is provided with a support plate, and the support plate is located on the radial symmetry plane of the intermediate tube; two guide rings and two first heads are symmetrically provided on both sides of the support plate, and the guide rings are seal-welded to the outer wall of the intermediate tube, and the first heads are seal-welded to the ports of the intermediate tube;

[0012] The anti-seismic components include: a connecting pipe, an end ring, a second head, a first outer cylinder, a second outer cylinder, a movable ring, a first bellows, a second bellows, a third bellows and a universal coupling;

[0013] The end ring seals the outer port of the second outer tube with the outer wall of the connecting pipe, the inner port of the second outer tube is connected to the inner port of the first outer tube through the first bellows, and the outer port of the first outer tube is sealed and welded to the movable ring;

[0014] The intermediate tube is inserted into the first outer tube through the through hole in the center of the movable ring, and the guide ring and the first end cap are both accommodated in the first outer tube; the second end cap is seal-welded to the inner port of the connecting pipe, and the second end cap is accommodated in the second outer tube; the first end cap and the second end cap are connected through a second bellows;

[0015] A gap is left between the guide ring and the inner wall of the first outer cylinder, and the guide ring and the inner wall of the movable ring are sealed by a third bellows;

[0016] A first through hole is provided on the side wall of the intermediate tube between the guide ring and the first head, and a second through hole is provided on the side wall of the connecting pipe between the end ring and the second head; the medium in the pipeline seismic absorber enters the second outer cylinder from the connecting pipe through the second through hole, enters the first outer cylinder from the second outer cylinder through the channel between the inner wall of the first corrugated tube and the outer wall of the second corrugated tube, then enters the intermediate tube through the first through hole, and then flows out from the connecting pipe on the other side through a symmetrical path.

[0017] Preferably, the first outer cylinder and the second outer cylinder are further connected via a universal coupling.

[0018] Preferably, the universal coupling includes: a coupling ring, a first connecting member, and a second connecting member; the coupling ring is sleeved outside the first bellows, one end of the first connecting member is fixed to the outer wall of the first outer cylinder, and the other end is rotatably connected to the coupling ring through a radially arranged first rotating shaft; one end of the second connecting member is fixed to the outer wall of the second outer cylinder, and the other end is rotatably connected to the coupling ring through a radially arranged second rotating shaft.

[0019] Preferably, the first rotating shaft and the second rotating shaft are perpendicular to each other.

[0020] Preferably, the second bellows and the third bellows are bellows of the same model and size.

[0021] Preferably, a support ear plate is radially provided on the outer wall of the first outer cylinder, and a plurality of axial control rods are circumferentially provided on the support ear plate. The support ear plate is provided with control holes corresponding to the control rods one by one, and the control rods pass through the control holes. Limit blocks are provided on the control rods on both sides of the control holes.

[0022] Preferably, the outer port of the connecting pipe is provided with a flange.

[0023] (3) Beneficial effects

[0024] The present invention provides a self-balancing universal pipe seismic device. Compared with the prior art, it has the following advantages:

[0025] In the present invention, the first outer tube and the second outer tube can achieve relative displacement through the deformation of the first bellows, the intermediate tube and the connecting tube can achieve relative displacement through the deformation of the second bellows, and the intermediate tube and the first outer tube can achieve relative displacement through the deformation of the third bellows; so that the pipeline seismic absorber can adapt to the offset requirements of the seismic design without leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 Schematic diagram of the structure of the pipeline anti-vibration device in an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the partial structure of the pipeline seismic isolator in an embodiment of the present invention.

[0029] Among them, the intermediate tube 10, the support plate 11, the guide ring 12, the first head 13, the first through hole 14, the control rod 15, the limit block 16, the connecting pipe 20, the end ring 21, the second head 22, the second bellows 23, the second through hole 24, the flange 25, the first outer tube 30, the second outer tube 31, the movable ring 32, the first bellows 33, the third bellows 34, the support ear plate 35, the connecting ring 40, the first connecting piece 41, the second connecting piece 42, the first rotating shaft 43, and the second rotating shaft 44. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] The embodiment of the present application solves the problem that the pipeline seismic isolator cannot meet the offset requirements of the seismic design by providing a self-balancing universal pipeline seismic isolator.

[0032] The technical solution in the embodiments of the present application is to solve the above technical problems, and the overall idea is as follows:

[0033] The first outer tube and the second outer tube can achieve relative displacement through the deformation of the first bellows, the intermediate tube and the connecting tube can achieve relative displacement through the deformation of the second bellows, and the intermediate tube and the first outer tube can achieve relative displacement through the deformation of the third bellows; so that the pipeline seismic absorber can adapt to the offset requirements of the seismic design without leakage.

[0034] It should also be noted that the inner wall of the first bellows is subjected to medium pressure and has a tendency to stretch, but the universal coupling limits the stretching of the first bellows, so that the forces on both sides of the first bellows are offset by each other through the universal coupling; the outer wall of the second bellows is subjected to medium pressure and has a tendency to shorten, that is, the two sides of the second bellows are subjected to equal and opposite extrusion forces F2 and F2' respectively; the outer wall of the third bellows is subjected to medium pressure and has a tendency to shorten, that is, the two sides of the third bellows are subjected to equal and opposite extrusion forces F3 and F3' respectively; since the second bellows and the third bellows are the same bellows, the extrusion forces of the medium on the second bellows and the third bellows are of the same magnitude. Etc., that is, F2=F2'=F3=F3'; wherein F2 is transmitted to the universal coupling through the second head, the connecting pipe, the end ring, and the second outer cylinder in sequence; F3' is transmitted to the universal coupling through the movable ring and the first outer cylinder in sequence, F2 and F3' are equal in size and opposite in direction, and cancel each other out through the universal coupling; F2' is transmitted to the intermediate pipe through the first head, and F3 is transmitted to the intermediate pipe through the guide ring, F2' and F3 are equal in size and opposite in direction, and cancel each other out through the intermediate pipe; so that under the pressure of the internal medium, the pipeline seismic absorber will not generate internal pressure thrust on the pipeline and the pipeline support, and is always in a self-balancing state, with a more stable structure and safer use.

[0035] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] Example:

[0037] like Figure 1 、 Figure 2 As shown, the present invention provides a self-balancing universal pipeline seismic device, which includes: an intermediate pipe 10 and two sets of seismic components; the two sets of seismic components are symmetrically arranged on both sides of the axial direction of the intermediate pipe 10;

[0038] The outer wall of the intermediate tube 10 is provided with a support plate 11, and the support plate 11 is located on the radially symmetrical plane of the intermediate tube 10; two guide rings 12 and two first heads 13 are symmetrically provided on both sides of the support plate 11, and the guide rings 12 are sealed and welded to the outer wall of the intermediate tube 10, and the first heads 13 are sealed and welded to the ports of the intermediate tube 10;

[0039] The anti-seismic components include: a connecting pipe 20, an end ring 21, a second head 22, a first outer cylinder 30, a second outer cylinder 31, a movable ring 32, a first bellows 33, a second bellows 23, a third bellows 34 and a universal coupling;

[0040] The end ring 21 seals the outer port of the second outer tube 31 with the outer wall of the connecting pipe 20. The inner port of the second outer tube 31 is connected to the inner port of the first outer tube 30 via the first bellows 33. The first outer tube 30 and the second outer tube 31 can achieve relative displacement through the deformation of the first bellows 33. The outer port of the first outer tube 30 is sealed and welded to the movable ring 32.

[0041] The intermediate tube 10 is inserted into the first outer tube 30 through the through hole at the center of the movable ring 32. The guide ring 12 and the first end cap 13 are both accommodated in the first outer tube 30. The second end cap 22 is seal-welded to the inner port of the connecting pipe 20 and is accommodated in the second outer tube 31. The first end cap 13 and the second end cap 22 are connected via a second bellows 23. The intermediate tube 10 and the connecting pipe 20 can achieve relative displacement through the deformation of the second bellows 23.

[0042] A gap is left between the guide ring 12 and the inner wall of the first outer cylinder 30, and a third bellows 34 is used to seal the guide ring 12 and the inner wall of the movable ring 32. This prevents the medium in the first outer cylinder 30 from leaking through the gap between the intermediate tube 10 and the movable ring 32, and the intermediate tube 10 and the first outer cylinder 30 achieve relative displacement through the deformation of the third bellows 34.

[0043] A first through hole 14 is provided on the side wall of the intermediate tube 10 between the guide ring 12 and the first head 13, and a second through hole 24 is provided on the side wall of the connecting pipe 20 between the end ring 21 and the second head 22; the medium in the pipeline seismic absorber enters the second outer tube 31 from the connecting pipe 20 through the second through hole 24, enters the first outer tube 30 from the second outer tube 31 through the channel between the inner wall of the first bellows 33 and the outer wall of the second bellows 23, then enters the intermediate tube 10 through the first through hole 14, and then flows out from the connecting pipe 20 on the other side through a symmetrical path.

[0044] The first outer tube 30 and the second outer tube 31 can achieve relative displacement through the deformation of the first bellows 33, the intermediate tube 10 and the connecting tube 20 can achieve relative displacement through the deformation of the second bellows 23, and the intermediate tube 10 and the first outer tube 30 can achieve relative displacement through the deformation of the third bellows 34; so that the pipeline seismic device can adapt to the offset requirements of the seismic design without leakage.

[0045] like Figure 1 、 Figure 2As shown, the first outer cylinder 30 and the second outer cylinder 31 are further connected via a universal coupling.

[0046] like Figure 1 、 Figure 2 As shown, the universal coupling includes a coupling ring 40, a first connecting member 41, and a second connecting member 42. The coupling ring 40 is sleeved outside the first bellows 33. One end of the first connecting member 41 is fixed to the outer wall of the first outer tube 30, and the other end is rotatably connected to the coupling ring 40 via a radially arranged first rotating shaft 43. One end of the second connecting member 42 is fixed to the outer wall of the second outer tube 31, and the other end is rotatably connected to the coupling ring 40 via a radially arranged second rotating shaft 44. The first rotating shaft 43 and the second rotating shaft 44 are perpendicular to each other. The universal coupling limits the relative telescopic displacement of the first outer tube 30 and the second outer tube 31, but does not affect the relative rotation of the first outer tube 30 and the second outer tube 31. This ensures that the pipeline seismic device does not generate internal pressure thrust on the pipeline and the pipeline support under the pressure of the internal medium, and is always in a self-balancing state.

[0047] like Figure 1 、 Figure 2 As shown, the second bellows 23 and the third bellows 34 are bellows of the same model and size.

[0048] like Figure 2 As shown, a force analysis of the pipeline seismic isolator under the action of internal medium pressure is performed. The inner wall of the first bellows 33 is subjected to the medium pressure and tends to stretch. However, the universal coupling limits the stretching of the first bellows 33, so that the forces on both sides of the first bellows 33 are offset by the universal coupling, and no force is generated on the structure outside the pipeline seismic isolator.

[0049] The outer wall of the second bellows 23 is subjected to the pressure of the medium and has a tendency to shorten, that is, the two sides of the second bellows 23 are subjected to equal extrusion forces F2 and F2' respectively; the outer wall of the third bellows 34 is subjected to the pressure of the medium and has a tendency to shorten, that is, the two sides of the third bellows 34 are subjected to equal extrusion forces F3 and F3' respectively; since the second bellows 23 and the third bellows 34 are the same bellows, the extrusion forces of the medium on the second bellows 23 and the third bellows 34 are equal, that is, F2 = F2' = F3 = F3'; where F2 is equal to F2'. It is transmitted to the universal coupling through the second head 22, the connecting pipe 20, the end ring 21, and the second outer cylinder 31; F3' is transmitted to the universal coupling through the movable ring 32 and the first outer cylinder 30 in turn. F2 and F3' are equal in size and opposite in direction, and offset each other through the universal coupling; F2' is transmitted to the intermediate pipe 10 through the first head 13, and F3 is transmitted to the intermediate pipe 10 through the guide ring 12. F2' and F3 are equal in size and opposite in direction, and offset each other through the intermediate pipe 10, so that no force is generated on the structure outside the pipeline seismic absorber and it is always in a self-balanced state.

[0050] like Figure 1 、 Figure 2 As shown, a support ear plate 35 is radially provided on the outer wall of the first outer cylinder 30, and a plurality of axial control rods 15 are circumferentially provided on the support plate 11. The support ear plate 35 is provided with control holes corresponding to the control rods 15 one by one. The control rods 15 pass through the control holes. Limit blocks 16 are provided on the control rods 15 on both sides of the control holes. The compression and extension amounts of the pipeline seismic absorber can be adjusted by adjusting the distance between the limit blocks 16 and the control holes. When the pipeline seismic absorber is installed horizontally, the control rods 15 also have the function of supporting the intermediate pipe.

[0051] like Figure 1 、 Figure 2 As shown, the outer end of the connecting pipe 20 is provided with a flange 25 to facilitate the connection of the connecting pipe 20 with an external pipeline.

[0052] During the compression and deflection of the pipeline anti-vibration device, assuming that the right flange 25 is relatively fixed, when the left flange 25 moves to the right, the connecting pipe 20 and the second end cap 22 will also move to the right, compressing the second bellows 23. Simultaneously, the end ring 21 and the outer cylinder assembly (the first outer cylinder 30, the second outer cylinder 31, and the universal joint) will also move to the right synchronously. Because the outer cylinder assembly cannot be compressed or stretched, the third bellows 34 will be stretched through the movable ring 32. The compression of the second bellows 23 is equal to the stretching of the third bellows 34. When this deflection reaches the distance L between the stop block 16 and the support lug 35, the support lug 35 will contact the stop block 16 on the control rod 15, and the third bellows 34 will no longer be stretched, and the second bellows 23 will no longer be compressed. At this time, when the pipeline seismic device continues to be compressed, under the action of the control rod 15 and the support plate 11, the middle tube 10 will continue to move to the right, while driving the second bellows 23 on the right to be compressed and the third bellows 34 to be stretched. When the compression reaches L again, the right limit block 16 on the control rod 15 will contact the right support ear plate 35, and the pipeline seismic device will not be further compressed, reaching the maximum compression state.

[0053] During the process of stretching and deflecting the pipeline anti-vibration device, assuming that the right flange 25 is relatively fixed, when the left flange 25 moves to the left, the connecting pipe 20 and the second end cap 22 will move to the left, stretching the second bellows 23. Simultaneously, the end ring 21 and the outer tube assembly will also move to the left synchronously. Because the outer tube assembly cannot be compressed or stretched, the third bellows 34 will be compressed through the movable ring 32. The stretching amount of the second bellows 23 is equal to the compression amount of the third bellows 34. When this offset reaches L, the support ear plate 35 will contact the limit block 16 on the control rod 15, and the third bellows 34 will no longer be compressed, and the second bellows 23 will no longer be stretched. At this time, when the pipeline seismic absorber continues to be stretched, under the action of the control rod 15 and the support plate 11, the middle tube 10 will continue to move to the left, while driving the second bellows 23 on the right to be stretched and the third bellows 34 to be compressed. When the stretching amount reaches L again, the right limit block 16 on the control rod 15 will contact the right support ear plate 35, and the pipeline seismic absorber will not be stretched further, reaching the maximum stretching state.

[0054] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0055] 1. In an embodiment of the present invention, the first outer tube and the second outer tube can achieve relative displacement through the deformation of the first bellows, the intermediate tube and the connecting tube can achieve relative displacement through the deformation of the second bellows, and the intermediate tube and the first outer tube can achieve relative displacement through the deformation of the third bellows. This allows the pipeline seismic isolator to adapt to the offset requirements of the seismic design without leaking.

[0056] 2. In the embodiment of the present invention, the inner wall of the first bellows is subjected to the pressure of the medium and has a tendency to stretch, but the universal coupling limits the stretching of the first bellows, so that the forces on both sides of the first bellows offset each other through the universal coupling; the outer wall of the second bellows is subjected to the pressure of the medium and has a tendency to shorten, that is, the two sides of the second bellows are subjected to equal and opposite extrusion forces F2 and F2' respectively; the outer wall of the third bellows is subjected to the pressure of the medium and has a tendency to shorten, that is, the two sides of the third bellows are subjected to equal and opposite extrusion forces F3 and F3' respectively; since the second bellows and the third bellows are the same bellows, the extrusion forces of the medium on the second bellows and the third bellows are of the same magnitude. Etc., that is, F2=F2'=F3=F3'; wherein F2 is transmitted to the universal coupling through the second head, the connecting pipe, the end ring, and the second outer cylinder in sequence; F3' is transmitted to the universal coupling through the movable ring and the first outer cylinder in sequence, F2 and F3' are equal in size and opposite in direction, and cancel each other out through the universal coupling; F2' is transmitted to the intermediate pipe through the first head, and F3 is transmitted to the intermediate pipe through the guide ring, F2' and F3 are equal in size and opposite in direction, and cancel each other out through the intermediate pipe; so that under the pressure of the internal medium, the pipeline seismic absorber will not generate internal pressure thrust on the pipeline and the pipeline support, and is always in a self-balancing state, with a more stable structure and safer use.

[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A self-balancing universal pipe seismic device, characterized in that: The pipeline anti-vibration device comprises: an intermediate pipe (10) and two sets of anti-vibration components; the two sets of anti-vibration components are symmetrically arranged on both axial sides of the intermediate pipe (10); The outer wall of the intermediate tube (10) is provided with a support plate (11), and the support plate (11) is located on the radial symmetry plane of the intermediate tube (10); two guide rings (12) and two first heads (13) are symmetrically provided on both sides of the support plate (11), the guide rings (12) are seal-welded to the outer wall of the intermediate tube (10), and the first heads (13) are seal-welded to the ports of the intermediate tube (10); The anti-seismic component comprises: a connecting pipe (20), an end ring (21), a second head (22), a first outer cylinder (30), a second outer cylinder (31), a movable ring (32), a first bellows (33), a second bellows (23), a third bellows (34) and a universal coupling; The end ring (21) seals the outer port of the second outer cylinder (31) with the outer wall of the connecting pipe (20); the inner port of the second outer cylinder (31) is connected to the inner port of the first outer cylinder (30) via a first bellows (33); and the outer port of the first outer cylinder (30) is sealed and welded to the movable ring (32); The intermediate tube (10) is inserted into the first outer tube (30) through the through hole in the center of the movable ring (32); the guide ring (12) and the first end cap (13) are both accommodated in the first outer tube (30); the second end cap (22) is seal-welded to the inner port of the connecting pipe (20); the second end cap (22) is accommodated in the second outer tube (31); the first end cap (13) and the second end cap (22) are communicated through the second bellows (23); A gap is left between the guide ring (12) and the inner wall of the first outer cylinder (30), and the guide ring (12) and the inner wall of the movable ring (32) are sealed by a third bellows (34); A first through hole (14) is provided on the side wall of the intermediate tube (10) between the guide ring (12) and the first end cap (13), and a second through hole (24) is provided on the side wall of the connecting pipe (20) between the end ring (21) and the second end cap (22); the medium in the pipeline seismic device enters the second outer cylinder (31) from the connecting pipe (20) through the second through hole (24), enters the first outer cylinder (30) from the second outer cylinder (31) through the channel between the inner wall of the first bellows (33) and the outer wall of the second bellows (23), then enters the intermediate tube (10) through the first through hole (14), and then flows out from the connecting pipe (20) on the other side through a symmetrical path; The first outer cylinder (30) and the second outer cylinder (31) are also connected via a universal coupling; The second bellows (23) and the third bellows (34) are bellows of the same model and size.

2. The self-balancing universal pipe seismic device according to claim 1, characterized in that: The universal joint comprises: a coupling ring (40), a first connecting member (41), and a second connecting member (42); the coupling ring (40) is sleeved outside the first bellows (33); one end of the first connecting member (41) is fixed to the outer wall of the first outer cylinder (30), and the other end is rotationally connected to the coupling ring (40) via a radially arranged first rotating shaft (43); one end of the second connecting member (42) is fixed to the outer wall of the second outer cylinder (31), and the other end is rotationally connected to the coupling ring (40) via a radially arranged second rotating shaft (44).

3. The self-balancing universal pipeline seismic device according to claim 2, characterized in that: The first rotating shaft (43) and the second rotating shaft (44) are perpendicular to each other.

4. The self-balancing universal pipeline seismic device according to any one of claims 1 to 3, characterized in that: A support ear plate (35) is radially provided on the outer wall of the first outer cylinder (30), and a plurality of axial control rods (15) are circumferentially provided on the support plate (11). The support ear plate (35) is provided with control holes corresponding to the control rods (15) one by one, and the control rods (15) pass through the control holes. Limiting blocks (16) are provided on the control rods (15) located on both sides of the control holes.

5. The self-balancing universal pipeline seismic device according to any one of claims 1 to 3, characterized in that: The outer port of the connecting pipe (20) is provided with a flange (25).

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