Double-seal high-temperature rotary compensator

Abstract

The utility model discloses a double-seal high-temperature rotary compensator, which belongs to the field of pipeline connection and compensation and comprises a rotary inner pipe, a shell is arranged on the right side of the rotary inner pipe, a packing flange is arranged outside the rotary inner pipe, a plurality of fastener components are in threaded connection with the packing flange in the circumferential direction, and the fastener components are in threaded connection with the shell. An auxiliary part is arranged in the shell, and a connecting device is arranged on the side, away from the filler flange, of the rotary inner pipe and the side, away from the filler flange, of the shell. The rotary inner pipe and the shell are arranged, the packing flange is arranged between the rotary inner pipe and the shell, the auxiliary part is arranged in the shell, and the packing flange and the auxiliary part are matched with each other, so that the rotary inner pipe can rotate and displace in the shell, displacement of the pipeline caused by thermal expansion and cold contraction, vibration or installation errors at high temperature is compensated, and the pipeline is prevented from being damaged. And the compensator and the pipeline are conveniently connected through the connecting device, the connecting device also has a compensation effect, the compensation pressure of the compensator is reduced, and the compensation effect is better.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline connection and compensation technical field, specifically related to double seal high temperature rotary compensator. BACKGROUND

[0002] In the high temperature pipeline system of petrochemical industry, electric power, metallurgy and other industries, thermal expansion, mechanical vibration and installation deviation easily lead to pipeline stress concentration, causing leakage or structural damage. The traditional single seal compensator is easy to cause medium leakage due to sealing failure under extreme working conditions, especially for high temperature steam, corrosive gas and other dangerous media, the safety hidden danger is outstanding, in order to improve the reliability, double seal high temperature rotary compensator emerges as the times require. Its redundant design of main sealing and auxiliary sealing is combined with universal rotary structure, which reduces the risk of leakage through double sealing barrier while compensating multidirectional displacement. The main sealing bears high temperature and high pressure medium isolation, and the auxiliary sealing serves as safety redundancy, supports online maintenance, significantly prolongs service life, and is widely used in severe scenes such as heat pipe network and reactor inlet and outlet.

[0003] The double seal high temperature rotary compensator has the functions of rotary compensation and displacement, and the installation needs to ensure the normal work of the compensator, which does not affect the realization of the function of the compensator, so the installation process is complex and cumbersome, and the pipeline installation mode is fixed connection, which cannot reduce the compensation pressure of the compensator. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problems that the existing equipment is difficult to realize the double seal high temperature rotary compensator installation process complex and cumbersome, and the pipeline installation mode is fixed connection, which cannot reduce the compensation pressure of the compensator.

[0005] The technical scheme adopted to solve the above technical problems is to provide a double seal high temperature rotary compensator.

[0006] Further, the rotating inner tube is provided with a shell on the right side, the rotating inner tube is provided with a packing flange outside, the packing flange is provided with a plurality of fastener assemblies connected in a ring shape through threads, the fastener assemblies are connected with the shell through threads, the shell is provided with an auxiliary part inside, the rotating inner tube and the shell are provided with a connecting device on the side away from the packing flange, and the connecting device is symmetrically arranged.

[0007] Through the above technical scheme, the rotating inner tube can rotate and displace by a small angle in the shell through the cooperation of the packing flange and the auxiliary part, the displacement of the pipeline caused by thermal expansion and contraction, vibration or installation error under high temperature is compensated, the compensator is connected with the pipeline through the connecting device, the connecting device also has a compensation effect, the compensation pressure of the compensator is reduced, and the compensation effect is better.

[0008] Further, the auxiliary part comprises an annular flexible graphite ring, a sealing seat positioning ring is arranged on the right side of the annular flexible graphite ring, an end face closing ring is arranged on the right side of the sealing seat positioning ring, and a limiting block is arranged on the right side of the end face closing ring.

[0009] Further, the annular flexible graphite ring, the sealing seat positioning ring and the end face closing ring are located between the rotating inner tube and the shell and on the right side of the packing flange, the limiting block is located in the shell and is fixedly connected with the shell, and the limiting block is in abutment with the right side of the rotating inner tube.

[0010] By the above technical scheme, the packing flange is connected with the shell through the fastener assembly, the packing flange is located on the outer side of the rotating inner tube, the annular flexible graphite ring is arranged between the inner side of the shell and the outer side of the rotating inner tube in sequence, the sealing seat positioning ring is arranged on the right side of the annular flexible graphite ring, the end face closing ring is arranged on the right side of the sealing seat positioning ring, the limiting block is arranged on the right side of the end face closing ring, the limiting block is located on the right side of the rotating inner tube and is used for limiting the position of the rotating inner tube, the rotating inner tube can rotate and displace by a small angle in the shell, and displacement of the pipeline caused by thermal expansion and contraction, vibration or installation error under high temperature can be compensated.

[0011] Further, the connecting device comprises a first connecting piece, a second connecting piece is arranged on the side of the first connecting piece close to the packing flange, the second connecting piece is threadedly connected with the rotating inner tube and the shell respectively on the side close to the packing flange, and a plurality of connecting bolts are arranged on the first connecting piece and the second connecting piece in a ring shape.

[0012] Further, clamping rings are fixedly connected between the first connecting piece and the second connecting piece, a flexible sealing ring is arranged between the clamping rings, a plurality of springs are arranged in the flexible sealing ring, and the springs are fixedly connected with the clamping rings.

[0013] By the above technical scheme, the first connecting piece and the second connecting piece can be used for quickly connecting the compensator with the pipeline, the clamping ring, the flexible sealing ring and the spring are matched with each other, the connecting device has the telescopic property, the compensation pressure of the compensator is reduced, and the compensation effect is better.

[0014] The utility model discloses the beneficial effect is as follows:

[0015] The utility model discloses the beneficial effect is as follows: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall perspective view of the double-seal high-temperature rotary compensator of the utility model;

[0017] Figure 2 is the compensator perspective view of the double-seal high-temperature rotary compensator of the utility model;

[0018] Figure 3 is the compensator front view of the double-seal high-temperature rotary compensator of the utility model;

[0019] Figure 4 is the connecting device perspective view of the double-seal high-temperature rotary compensator of the utility model;

[0020] Figure 5 is the connecting device front view of the double-seal high-temperature rotary compensator of the utility model;

[0021] Figure 6 is the Figure 5 enlarged view of A of the double-seal high-temperature rotary compensator of the utility model.

[0022] Reference signs: 1, rotary inner tube; 2, shell; 3, packing flange; 4, connecting device; 401, first connecting piece; 402, second connecting piece; 403, connecting bolt; 404, clamping ring; 405, flexible sealing ring; 406, spring; 5, fastener assembly; 6, auxiliary piece; 601, annular flexible graphite ring; 602, sealing seat positioning ring; 603, end face closing ring; 604, limiting block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clear and intelligible, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0024] As shown in Figure 1 - Figure 6 The double-seal high-temperature rotary compensator includes a rotary inner tube 1, the right side of the rotary inner tube 1 is provided with a shell 2, the outside of the rotary inner tube 1 is provided with a packing flange 3, a plurality of fastener assemblies 5 are connected in the circumferential thread of the packing flange 3, the fastener assemblies 5 are used to connect the packing flange 3 and the shell 2, the fastener assemblies 5 are threadedly connected with the shell 2, the inside of the shell 2 is provided with an auxiliary piece 6, the auxiliary piece 6 includes an annular flexible graphite ring 601, the annular flexible graphite ring 601 is a kind of sealing material made of high-purity graphite by special processing, which has excellent high-temperature resistance, corrosion resistance and flexibility, and also has self-lubricating property, graphite layers are easy to slide, reducing friction and wear, and has compressibility and resilience, which can adapt to uneven flange or thermal expansion and contraction, and maintain sealing effect.

[0025] The right side of the annular flexible graphite ring 601 is provided with a sealing seat positioning ring 602, which is a key component in the sealing system and is mainly used for fixing the position of the sealing element to prevent it from deviating, extruding or twisting due to pressure or movement, thereby ensuring the reliability and service life of the sealing. The right side of the sealing seat positioning ring 602 is provided with an end face closing ring 603, which is a core component of the mechanical seal and is used for axial end face sealing of the rotating equipment to prevent fluid leakage. The right side of the end face closing ring 603 is provided with a limiting block 604, which is used to limit the position of the rotating inner tube 1. The annular flexible graphite ring 601, the sealing seat positioning ring 602 and the end face closing ring 603 are located between the rotating inner tube 1 and the shell 2 and on the right side of the packing flange 3. The limiting block 604 is located inside the shell 2 and is fixedly connected with the shell 2. The limiting block 604 and the right side of the rotating inner tube 1 abut against each other. The side of the rotating inner tube 1 and the shell 2 away from the packing flange 3 is provided with a connecting device 4, and the connecting device 4 is symmetrically arranged.

[0026] The connecting device 4 comprises a first connecting piece 401, the side of the first connecting piece 401 close to the packing flange 3 is provided with a second connecting piece 402, the side of the second connecting piece 402 close to the packing flange 3 is respectively threadedly connected with the rotating inner tube 1 and the shell 2. The first connecting piece 401 and the second connecting piece 402 are circumferentially provided with a plurality of connecting bolts 403, the connecting bolts 403 are used to connect the first connecting piece 401 and the second connecting piece 402. The first connecting piece 401 and the second connecting piece 402 are fixedly connected with clamping rings 404, the clamping rings 404 are used to ensure that the first connecting piece 401 and the second connecting piece 402 do not separate. The clamping rings 404 are provided with flexible sealing rings 405, the inside of the flexible sealing rings 405 is provided with a plurality of springs 406, the springs 406 are fixedly connected with the clamping rings 404. The flexible sealing rings 405 and the springs 406 are used to ensure the sealing performance of the first connecting piece 401 and the second connecting piece 402 while making them have the performance of expansion and contraction compensation.

[0027] The working principle of the embodiment is as follows. During installation, the rotating inner tube 1 is inserted into the inside of the shell 2, the packing flange 3 is connected with the shell 2 through the fastener assembly 5, the packing flange 3 is located outside the rotating inner tube 1, and the annular flexible graphite ring 601 is sequentially arranged between the inside of the shell 2 and the outside of the rotating inner tube 1. The right side of the annular flexible graphite ring 601 is provided with the sealing seat positioning ring 602, the right side of the sealing seat positioning ring 602 is provided with the end face closing ring 603, the right side of the end face closing ring 603 is provided with the limiting block 604, and the limiting block 604 is located on the right side of the rotating inner tube 1 and is used to limit the position of the rotating inner tube 1.

[0028] The connecting device 4 is symmetrically arranged, the first connecting piece 401 is connected with the high-temperature pipeline, the second connecting piece 402 is connected with the rotating inner tube 1 and the shell 2 respectively, the first connecting piece 401 and the second connecting piece 402 are connected through the connecting bolt 403, the clamping ring 404 is arranged between the first connecting piece 401 and the second connecting piece 402, the flexible sealing ring 405 is arranged in the clamping ring 404, the spring 406 is arranged in the flexible sealing ring 405, and the spring 406 is fixedly connected with the clamping ring 404.

[0029] The above merely describes a preferred embodiment of the present application, and is not intended to limit the protection scope of the present application.

Claims

1. Double-sealed high-temperature rotary compensator comprising a rotating inner tube (1), characterized in that: The right side of the rotating inner tube (1) is provided with a shell (2), the outer part of the rotating inner tube (1) is provided with a packing flange (3), a plurality of fastener assemblies (5) are connected to the packing flange (3) in a ring direction by screwing, the fastener assemblies (5) are connected to the shell (2) by screwing, the inside of the shell (2) is provided with an auxiliary part (6), the side of the rotating inner tube (1) and the shell (2) away from the packing flange (3) is provided with a connecting device (4), and the connecting device (4) is symmetrically arranged.

2. The double-seal high-temperature rotary compensator of claim 1, wherein, The auxiliary part (6) comprises an annular flexible graphite ring (601), the right side of the annular flexible graphite ring (601) is provided with a sealing seat positioning ring (602), the right side of the sealing seat positioning ring (602) is provided with an end face closing ring (603), and the right side of the end face closing ring (603) is provided with a limiting block (604).

3. The double-seal high-temperature rotary compensator of claim 2, wherein, The annular flexible graphite ring (601), the sealing seat positioning ring (602) and the end face closing ring (603) are located between the rotating inner tube (1) and the shell (2) and on the right side of the packing flange (3), the limiting block (604) is located in the inside of the shell (2) and is fixedly connected with the shell (2), and the limiting block (604) abuts against the right side of the rotating inner tube (1).

4. The double-seal high-temperature rotary compensator of claim 1, wherein, The connecting device (4) comprises a first connecting piece (401), the side of the first connecting piece (401) close to the packing flange (3) is provided with a second connecting piece (402), the side of the second connecting piece (402) close to the packing flange (3) is respectively connected to the rotating inner tube (1) and the shell (2) by screwing, and a plurality of connecting bolts (403) are arranged on the first connecting piece (401) and the second connecting piece (402) in a ring direction.

5. The double-seal high-temperature rotary compensator of claim 4, wherein, A clamping ring (404) is fixedly connected between the first connecting piece (401) and the second connecting piece (402), a flexible sealing ring (405) is arranged between the clamping rings (404), a plurality of springs (406) are arranged in the inside of the flexible sealing ring (405), and the springs (406) are fixedly connected with the clamping rings (404).

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