A multi-directional adjustable pipeline limiting device

Abstract

The present invention discloses a multi-directional adjustable pipeline limit device, wherein the lower side of a limit gap adjuster is sleeved on the upper part of a limit base, the lower side of a bearing column is inserted into the upper side of the limit gap adjuster, the limit angle adjuster and a top plate are sleeved on the upper side of the bearing column in sequence, the upper surface of the top plate is a spherical outer convex surface, and the lower surface of the limit plate is a spherical inner concave surface matched with the spherical outer convex surface; a dovetail is arranged at the bottom of the limit plate, and a dovetail groove matched with the dovetail is arranged on the side of the limit angle adjuster; a threaded hole is arranged on the side of the limit angle adjuster, and an anti-dropping bolt is inserted into the threaded hole. The device has the characteristics of adjustable limit gap, controllable maximum rotation angle of the limit plate, and anti-dropping of the limit plate.

Description

Technical Field

[0001] The present invention relates to a pipeline limiting device, and more particularly to a multi-directionally adjustable pipeline limiting device. Background Art

[0002] A pipeline is a transportation system for transporting media between two or more devices, and is widely used in energy industry fields such as thermal power plants, nuclear power plants, petrochemical industries, etc. Under the cyclic action of mechanical loads and thermal loads, the position of the pipeline will switch between different state lines. To ensure that the attitude of the pipeline is controllable in each state, it is necessary to apply a limiting constraint to the pipeline at specific positions. Under the constraint of the limiting device, the pipeline at the constraint point can only have a limited displacement in the limiting direction. Since the structural stiffness of the limiting device is much greater than the macroscopic stiffness of the pipeline in the limiting direction, the contact between the pipeline and the limiting device belongs to a typical "small strain, large stress" problem. In order to control the limiting contact force, that is, to control the stress level of the pipeline at the limiting point, it is necessary to precisely control the limiting gap of the limiting device. In addition, since the end face of the limiting pipe clamp connected to the pipeline at the limiting point will deflect in different states and cannot maintain the translational characteristics, in order to ensure that the limiting device and the limiting pipe clamp can form a "surface-surface" contact in any state, it is required that the limiting disk of the limiting device can rotate with the end face of the limiting pipe clamp within a set angle range.

[0003] Traditional pipeline limiting devices usually consist of a base, a limiting disk, and connecting bolts. During installation, the limiting gap cannot be precisely controlled, and there is no limiting angle adjustment function. In addition, due to unreasonable structural design, the connecting bolts often break, resulting in problems such as the limiting disk falling and injuring people and the failure of the limiting device. Therefore, it is necessary to design a more reasonable and effective pipeline limiting device, which has the following functions: adjustable limiting gap, controllable maximum rotation angle of the limiting disk, and anti-disengagement load of the limiting disk. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned disadvantages of the prior art, and provides a multi-directionally adjustable pipeline limiting device, which has the characteristics of adjustable limiting gap, controllable maximum rotation angle of the limiting disk, and anti-disengagement load of the limiting disk.

[0005] To achieve the above purpose, the multi-directionally adjustable limiting device described in the present invention includes a limiting disk, a top disk, a limiting angle adjuster, a bearing column, a limiting gap adjuster, and a limiting base;

[0006] The limit disk, top disk, limit angle adjuster, bearing column, limit clearance adjuster, and limit base are distributed in sequence from top to bottom. Among them, the lower side of the limit clearance adjuster is sleeved on the upper part of the limit base, the lower side of the bearing column is inserted into the upper side of the limit clearance adjuster, the limit angle adjuster and the top disk are sequentially sleeved on the upper side of the bearing column, the upper surface of the top disk is a spherical convex surface, and the lower surface of the limit disk is a spherical concave surface that matches the spherical convex surface;

[0007] A dovetail is provided at the bottom of the limit disk, and a dovetail groove that matches the dovetail is provided on the side of the limit angle adjuster;

[0008] A threaded hole is provided on the side of the limit angle adjuster, and an anti-drop bolt is inserted into the threaded hole.

[0009] The depth of the dovetail groove is H 1 and the height of the dovetail is H 2 , H 1 >H 2 .

[0010] The radius of curvature of the spherical convex surface is R 1 and the radius of curvature of the spherical concave surface is R 2 , R 2 >R 1 .

[0011] The lower side of the limit clearance adjuster is provided with a left-handed thread, the upper side of the limit clearance adjuster is provided with a right-handed thread, and the limit clearance adjuster is threadedly connected to the limit base and the bearing column.

[0012] Both the top disk and the limit angle adjuster are threadedly connected to the bearing column.

[0013] A through hole for rotating the limit clearance adjuster is provided on the side of the limit clearance adjuster.

[0014] The present invention has the following beneficial effects:

[0015] When the multi-directionally adjustable pipeline limiting device of the present invention is in specific operation, by rotating the limit clearance adjuster, the overall length from the limit disk to the limit base can be adjusted to precisely control the limit clearance of the limiting device, ensuring that the limiting device will not experience overload and unloading phenomena in any state, achieving the purpose of controlling the pipeline stress level at the limit point; in addition, by rotating the limit angle adjuster, the distance between the dovetail and the dovetail groove bracket can be adjusted to control the maximum deflection angle of the limit disk; furthermore, an anti-drop bolt is provided on the side of the limit angle adjuster to ensure that the limit disk does not experience unloading and dropping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present invention;

[0017] Figure 2 This is the exploded view of the present invention.

[0018] Among them, 1 is the limit disc, 2 is the top disc, 3 is the limit angle adjuster, 4 is the limit clearance adjuster, 5 is the limit base, 6 is the anti-drop bolt, and 7 is the load-bearing column. Specific embodiments

[0019] The present invention will be further described in detail below with reference to the accompanying drawings:

[0020] Reference Figure 1 and Figure 2 , the multi-directionally adjustable limiting device of the present invention includes a limit disc 1, a top disc 2, a limit angle adjuster 3, a load-bearing column 7, a limit clearance adjuster 4 and a limit base 5; the limit disc 1, the top disc 2, the limit angle adjuster 3, the load-bearing column 7, the limit clearance adjuster 4 and the limit base 5 are distributed in sequence from top to bottom. Among them, the lower side of the limit clearance adjuster 4 is sleeved on the upper part of the limit base 5, the lower side of the load-bearing column 7 is inserted into the upper side of the limit clearance adjuster 4, the limit angle adjuster 3 and the top disc 2 are sequentially sleeved on the upper side of the load-bearing column 7, the upper surface of the top disc 2 is a spherical convex surface, and the lower surface of the limit disc 1 is a spherical concave surface that matches the spherical convex surface; a dovetail is provided at the bottom of the limit disc 1, and a dovetail groove that matches the dovetail is provided on the side surface of the limit angle adjuster 3; a threaded hole is provided on the side surface of the limit angle adjuster 3, and an anti-drop bolt 6 is inserted into the threaded hole, and a through hole for rotating the limit clearance adjuster 4 is provided on the side surface of the limit clearance adjuster 4.

[0021] The depth of the dovetail groove is H 1 , the height of the dovetail is H 2 , H 1 >H 2 ; the radius of curvature of the spherical convex surface is R 1 , the radius of curvature of the spherical concave surface is R 2 , R 2 >R 1 .

[0022] The lower side of the limit clearance adjuster 4 is provided with a left-handed thread, the upper side of the limit clearance adjuster 4 is provided with a right-handed thread, and the limit clearance adjuster 4 is threadedly connected to the limit base 5 and the load-bearing column 7; both the top disc 2 and the limit angle adjuster 3 are threadedly connected to the load-bearing column 7.

[0023] The working principle of the present invention is:

[0024] The limit base 5 is welded to the building structural member. The end of the limit base 5 is machined with a left-handed thread. At the same time, the inner walls at both ends of the limit gap adjuster 4 are respectively machined with a left-handed thread and a right-handed thread. Rotate the limit gap adjuster 4 to make the limit gap adjuster 4, the bearing column 7, the limit angle adjuster 3, the top plate 2 and the limit plate 1 move as a whole along the axis of the limit device, so as to achieve the purpose of accurately controlling the limit gap.

[0025] The upper end of the top plate 2 is provided with a spherical convex surface, and the radius of curvature of the spherical convex surface is R 1 , the bottom surface of the limit plate 1 is a spherical concave surface, and the radius of curvature of the spherical concave surface is R 2 , where, R 2 >R 1 , and at the same time the inner diameter D of the limit plate 1 1 is greater than the outer diameter D of the top plate 2 2 , ensuring that the spherical concave surface and the spherical convex surface are always in tangential contact and no interference phenomenon will occur; in addition, the limit angle adjuster 3 is provided with a dovetail groove, and the depth of the dovetail groove is H 1 , the end of the limit plate 1 is provided with a dovetail, and the height of the dovetail is H 2 , H 1 >H 2 , rotate the limit angle adjuster 3 to control the distance H between the dovetail and the bottom surface of the dovetail groove 3 , the maximum deflection angle α of the limit plate 1 decreases with the increase of H 3 , and when H 3 =H 2 -H 1 , the limit plate 1 will be locked and cannot deflect. Since the limit plate 1 is connected to the limit angle adjuster 3 by a dovetail-dovetail groove connection method, and at the same time anti-dropping bolts 6 are arranged on the side surface of the limit angle adjuster 3 to ensure that the limit plate 1 does not undergo offloading and dropping.

[0026] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope introduced by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A multi-directional adjustable limit device, characterized in that: It comprises a limit plate (1), a top plate (2), a limit angle adjuster (3), a bearing column (7), a limit gap adjuster (4) and a limit base (5); The limiting plate (1), the top plate (2), the limiting angle adjuster (3), the bearing column (7), the limiting gap adjuster (4) and the limiting base (5) are arranged in sequence from top to bottom, wherein the lower side of the limiting gap adjuster (4) is sleeved on the upper part of the limiting base (5), the lower side of the bearing column (7) is inserted into the upper side of the limiting gap adjuster (4), the limiting angle adjuster (3) and the top plate (2) are sleeved on the upper side of the bearing column (7) in sequence, the upper surface of the top plate (2) is a spherical outer convex surface, and the lower surface of the limiting plate (1) is a spherical inner concave surface matched with the spherical outer convex surface; A dovetail is arranged at the bottom of the limiting plate (1), and a dovetail groove matching with the dovetail is arranged on the side of the limiting angle adjuster (3); A threaded hole is provided on the side of the limit angle adjuster (3), and an anti-falling bolt (6) is inserted into the threaded hole; The depth of the dovetail groove is H1, the height of the dovetail is H2, H1>H2; The radius of curvature of the spherical outer convex surface is R1, and the radius of curvature of the spherical inner concave surface is R2, R2>R1; The lower side of the limit gap adjuster (4) is provided with a left-handed thread, and the upper side of the limit gap adjuster (4) is provided with a right-handed thread. The limit gap adjuster (4) is connected to the limit base (5) and the bearing column (7) through threads. The top plate (2) and the limit angle adjuster (3) are both connected to the bearing column (7) via threads.

2. The multi-directional adjustable limit device according to claim 1, characterized in that: A through hole for rotating the position-limiting gap adjuster (4) is provided on the side surface of the position-limiting gap adjuster (4).

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