Metal compensator convenient to adjust

Abstract

The utility model relates to the technical field of compensators, and discloses a metal compensator convenient to adjust, which comprises a corrugated pipe, flanges are arranged at two ends of the corrugated pipe, a plurality of lugs are uniformly arranged on the side walls of the flanges, two corresponding lugs on the two flanges form a group, a pull rod penetrates through the lugs in one group, and the pull rod is connected with the corrugated pipe. Threads are arranged at the two ends of the pull rod, one end of the pull rod is in threaded connection with two limiting nuts, the other end of the pull rod is in threaded connection with two adjusting nuts, the two limiting nuts and the two adjusting nuts are evenly arranged on the two sides of the corresponding lugs, and a driving disc is installed on the flange close to the ends of the adjusting nuts. The driving disc can synchronously adjust all the adjusting nuts, the problems that when the pull rods are adjusted respectively, operation is tedious, and flanges are prone to inclining are solved, adjustment is convenient, and leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compensators, and more specifically, to a metal compensator which is easy to adjust. Background Art

[0002] Metal compensators are a flexible structure installed on the container shell or pipeline to compensate for the additional stress caused by temperature difference and mechanical vibration. As a flexible compensating element that can freely expand and contract, it has reliable operation, good performance and compact structure, and is widely used in chemical industry, metallurgy, nuclear energy and other fields.

[0003] When installing a metal compensator, it is necessary to adjust the tie rod nut for pre-stretching or pre-compression according to the working environment to increase the deformation margin of the metal compensator and adapt its structural dimensions to the current installation dimensions. The Chinese utility model patent with application number 202321316635.3 discloses a compensator with an adjustment function, which divides the metal compensator into an assembly type and adds an elastic compensation ring between the bellows to improve its deformation capacity and facilitate the adjustment of the installation dimensions. However, its multi-layer structure increases the risk of leakage. At the same time, it is necessary to adjust each tie rod separately, which is cumbersome to operate and cannot ensure the uniformity of the action length of all tie rods, which may cause the flange surface to deviate and cause leakage. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a metal compensator which can ensure the perpendicularity between the flange surface and the axis and is easy to adjust.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A metal compensator that is easy to adjust includes a bellows, flanges are provided at both ends of the bellows, a number of ears are evenly provided on the side walls of the flanges, two ears corresponding to the two flanges form a group, a pull rod is passed through a group of ears, threads are provided at both ends of the pull rod, one end of the pull rod is threadedly connected to two limit nuts, the other end of the pull rod is threadedly connected to two adjusting nuts, the two limit nuts and the two adjusting nuts are arranged on both sides of the corresponding ears, a drive disk is installed on the flange close to one end of the adjusting nut, and the drive disk can synchronously adjust all the adjusting nuts.

[0007] The utility model is further configured as follows: the outer periphery of the adjusting nut is provided with straight teeth, the driving plate comprises two external gears, the two external gears are arranged on both sides of the corresponding flange, and all the adjusting nuts are respectively meshed with the two external gears.

[0008] The utility model is further configured as follows: a plurality of connecting blocks are symmetrically arranged on the end surface of the external gear away from the flange side connected to the drive disk, and two corresponding connecting blocks on the two external gears form a group, and a push handle can be movably connected to a group of connecting blocks, and the push handle is "Y"-shaped, and the two front corners of the push handle can be inserted into a group of connecting blocks at the same time.

[0009] The utility model is further configured as follows: two slide grooves are arranged on the flange close to the adjusting nut, the slide grooves are in an annular shape coaxial with the flange, and the two external gears are rotatably connected to the two slide grooves respectively.

[0010] The utility model is further configured as follows: a sink groove is provided on one side of the ear piece away from the adjusting nut, and the corresponding limiting nut can be fitted in the sink groove.

[0011] The advantages of the utility model are:

[0012] An adjusting nut is arranged at one end of the pull rod. The outer circumference of the adjusting nut is gear-shaped. A driving disk is rotatably connected to the corresponding flange. The two external gears of the driving disk are respectively meshed with all the adjusting nuts on both sides of the ear piece. The "Y"-shaped push handle can be inserted into the connecting blocks of the two external gears at the same time. By pushing the push handle, the two external gears can be rotated synchronously, thereby driving all the adjusting nuts to rotate together. The operation is convenient and can ensure that all the adjusting nuts rotate through the same distance, that is, the verticality of the flange and the axis of the metal compensator can be ensured after pre-adjustment, thereby reducing the occurrence of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0014] Figure 2 for Figure 1 An enlarged view of part A is shown;

[0015] Figure 3 For along Figure 1 The BB line cross section is shown;

[0016] Figure 4 for Figure 3 An enlarged view of section C is shown;

[0017] Figure 5 for Figure 3 An enlarged view of part D is shown;

[0018] In the figure: 1, bellows; 2, flange; 21, slide groove; 3, ear piece; 31, sink groove; 4, pull rod; 5, limit nut; 6, adjusting nut; 7, driving plate; 71, connecting block; 8, push handle. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0021] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0022] See also Figure 1-5 , the utility model provides the following technical solutions:

[0023] A metal compensator that is easy to adjust, comprising a bellows 1, flanges 2 are arranged at both ends of the bellows 1, a number of lugs 3 are evenly arranged on the side walls of the flanges 2, two lugs 3 corresponding to the same angle on the two flanges 2 form a group, a pull rod 4 is passed through a group of lugs 3, so that the pull rod 4 can be parallel to the axis of the bellows 1, threads are arranged at both ends of the pull rod 4, one end of the pull rod 4 is threadedly connected to two limit nuts 5, the other end of the pull rod 4 is threadedly connected to two adjusting nuts 6, the two limit nuts 5 and the two The adjusting nuts 6 are evenly arranged on both sides of the corresponding ear pieces 3 and clamp the corresponding ear pieces 3 with each other. A recessed groove 31 is provided on one side of the ear piece 3 away from the adjusting nut 6. When the corresponding limiting nut 5 fits in the recessed groove 31, the rotation of the limiting nut 5 and the pull rod 4 can be limited, so that the adjusting nut 6 on the other side can be rotated to adjust the length of the bellows 1. By adjusting the distance between the corresponding limiting nut 5 and the adjusting nut 6, the length of the bellows 1 can be changed to perform pre-stretching or pre-compression to meet the requirements of deformation allowance and assembly.

[0024] A driving disk 7 is installed on the flange 2 near one end of the adjusting nut 6. The driving disk 7 can adjust all the adjusting nuts 6 synchronously, which not only avoids screwing the adjusting nuts 6 one by one, facilitating operation, but also ensures that all the adjusting nuts 6 move the same distance during adjustment, so that the flange 2 can always be perpendicular to the axis of the bellows 1, ensuring the sealing of the connection with other structures and reducing the occurrence of leakage.

[0025] The outer periphery of the adjusting nut 6 is provided with straight teeth, that is, the outer periphery of the adjusting nut 6 is gear-shaped, the driving disk 7 includes two external gears, and two slide grooves 21 are provided on the flange 2 close to the adjusting nut 6. The slide groove 21 is annular and coaxial with the flange 2. The two external gears are arranged on both sides of the corresponding flange 2 and are respectively rotatably connected with the two slide grooves 21. All the adjusting nuts 6 are respectively meshed with the two external gears; when the driving disk 7 is pushed to rotate on the flange 2, all the adjusting nuts 6 on both sides of the ear piece 3 can be driven to rotate at the same time, thereby realizing the adjustment of the length of the bellows 1.

[0026] A plurality of connecting blocks 71 are symmetrically arranged on the end face of the outer gear facing away from the flange 2 connected to it. Two connecting blocks 71 corresponding to each other in the longitudinal direction on the two outer gears form a group. A push handle 8 can be movably connected to a group of connecting blocks 71. The push handle 8 is "Y"-shaped. The two front corners of the push handle 8 can be inserted into a group of connecting blocks 71 at the same time. The push handle 8 can conveniently push the driving disk 7 to rotate through a group of connecting blocks 71.

[0027] Specifically, an adjusting nut 6 is provided at one end of the pull rod 4. The outer circumference of the adjusting nut 6 is gear-shaped. A driving disk 7 is rotatably connected to the corresponding flange 2. The two external gears of the driving disk 7 are respectively engaged with all the adjusting nuts 6 on both sides of the ear piece 3. The "Y"-shaped push handle 8 can be inserted into the connecting block 71 of the two external gears at the same time. By pushing the push handle 8, the two external gears can be rotated synchronously, thereby driving all the adjusting nuts 6 to rotate together. The operation is convenient and can ensure that all the adjusting nuts 6 rotate through the same distance, that is, the verticality of the flange 2 and the axis of the metal compensator can be ensured after pre-adjustment, thereby reducing the occurrence of leakage.

[0028] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar opposites, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0031] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A metal compensator that is easy to adjust, comprising a bellows (1), characterized in that: Flanges (2) are provided at both ends of the bellows (1), and a plurality of ear pieces (3) are evenly provided on the side walls of the flanges (2). Two corresponding ear pieces (3) on the two flanges (2) form a group, and a pull rod (4) is passed through a group of ear pieces (3). Threads are provided at both ends of the pull rod (4), and one end of the pull rod (4) is threadedly connected to two limit nuts (5), and the other end of the pull rod (4) is threadedly connected to two adjusting nuts (6). The two limit nuts (5) and the two adjusting nuts (6) are evenly arranged on both sides of the corresponding ear pieces (3), and a driving disk (7) is installed on the flange (2) close to one end of the adjusting nut (6), and the driving disk (7) can synchronously adjust all the adjusting nuts (6).

2. The easily adjustable metal compensator according to claim 1, characterized in that: The outer periphery of the adjusting nut (6) is provided with straight teeth, the driving disc (7) comprises two external gears, the two external gears are arranged on both sides of the corresponding flange (2), and all the adjusting nuts (6) are respectively meshed with the two external gears.

3. The easily adjustable metal compensator according to claim 2, characterized in that: A plurality of connection blocks (71) are symmetrically arranged on the end surface of the external gear away from the flange (2) connected to the drive disc (7), and two corresponding connection blocks (71) on two external gears form a group. A push handle (8) can be movably connected to a group of connection blocks (71). The push handle (8) is "Y"-shaped, and two front corners of the push handle (8) can be inserted into a group of connection blocks (71) at the same time.

4. The easily adjustable metal compensator according to claim 3 is characterized in that: Two slide grooves (21) are provided on the flange (2) near the adjusting nut (6), and the slide grooves (21) are in an annular shape coaxial with the flange (2), and the two external gears are respectively rotatably connected to the two slide grooves (21).

5. The easily adjustable metal compensator according to claim 1, characterized in that: A recessed groove (31) is provided on one side of the ear piece (3) away from the adjusting nut (6), and the corresponding limiting nut (5) can be fitted in the recessed groove (31).

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