Rotary compensator and pipeline system

Abstract

The invention discloses a rotary compensator and a pipeline system, and belongs to the technical field of pipe joints, the rotary compensator comprises a reducer pipe, an inner sleeve, a first sealing element and a second sealing element, and the first sealing element and the second sealing element are connected and both arranged on the peripheral side of the inner sleeve in a sleeving mode; the second sealing piece comprises a second sealing seat, a second gland, a second flexible filler and a second fastening bolt. According to the invention, the second sealing element is additionally arranged on the first sealing element without stopping, and the second gland is adjusted by the second fastening bolt to move towards the direction close to the second sealing seat and is fixed, so that the second gland extrudes the second flexible filler to fill the gap among the inner sleeve, the first sealing element and the second sealing element; the sealing performance is greatly improved through the double-sealing structure, the glue injection hole is formed in the sealing seat, glue can be supplemented to the position of the flexible filler through the glue injection hole, leakage caused by filler failure and abrasion loss of the position is supplemented, and emergency treatment is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of pipe joints, and in particular to a rotary compensator and a pipeline system. Background Art

[0002] The rotary compensator is mainly used in pipeline systems with steam or liquid as the medium. The pipeline will expand due to heat at high temperature, and the pipeline will move along the direction of the sliding bracket after axial elongation. When starting and stopping or when the temperature of the pipeline network fluctuates, the rotary compensator converts the linear motion of the pipeline into rotary motion by rotating to eliminate the elongation of the pipeline after heating. However, during the production and operation process, there is a frequent leakage problem between the rotary compensator and the pipeline. The rotary compensator is sealed with graphite packing, which is easy to fail under high temperature and high pressure for a long time. The rotary compensator will rotate when starting and stopping and when the temperature changes. During the rotation process, the packing will be lost, causing the medium to leak along the gap between the outer diameter of the pipeline and the sealing box.

[0003] However, as the pipeline is a public production system, replacing a new rotary compensator requires the entire system to be shut down for processing, and the replacement construction work takes a long time. In addition, the updated rotary compensator also has the problems of short service life and frequent leakage. After leakage, a large amount of medium is sprayed out, causing pipeline vibration and sliding bracket tilt, resulting in serious safety hazards and waste of resources. The present invention proposes a new solution to the above problems. Summary of the invention

[0004] In order to overcome at least one of the above disadvantages, the present invention provides a rotary compensator and a pipeline system. The purpose of the present invention can be achieved by adopting the following technical solutions:

[0005] According to a first aspect of the present invention, a rotary compensator is provided, comprising a reducer, an inner sleeve, a first seal and a second seal, wherein the first seal is connected to the reducer, the first seal and the second seal are connected, the first seal and the second seal are both sleeved on the outer circumference of the inner sleeve, and the first seal comprises a first sealing seat, a first gland, a first flexible filler, a first fastening bolt and a centering bearing;

[0006] The second sealing member comprises a second sealing seat, a second gland, a second flexible filler and a second fastening bolt, the second sealing seat is connected to the first gland, the second sealing seat is sleeved on the outer peripheral side of the inner sleeve and an accommodating cavity is formed between the second sealing seat and the tube wall of the inner sleeve, the second flexible filler is arranged in the accommodating cavity, the second gland is sleeved on the outer peripheral side of the inner sleeve, the second sealing seat and the second gland are connected by a second bolt, and a part of the second gland can be inserted into the accommodating cavity and squeeze the second flexible filler;

[0007] Among them, a glue injection hole is opened on the first sealing seat, and the glue injection hole is connected with the chamber where the first flexible filler is located; and / or a glue injection hole is opened on the second sealing seat, and the glue injection hole is connected with the chamber where the second flexible filler is located, and is used to inject filling glue into the chamber where the first flexible filler is located and / or the chamber where the second flexible filler is located through the glue injection hole.

[0008] In one possible implementation manner, a glue injection joint is provided at the exposed opening of the glue injection hole, a through hole communicating with the glue injection hole is formed on the glue injection joint, and the filling glue includes a flexible graphite fiber material.

[0009] In one possible implementation manner, the glue injection hole is provided with an internal thread, the glue injection joint is provided with an external thread matched with the internal thread, and the glue injection joint is threadedly connected to the glue injection hole.

[0010] In one embodiment, the second sealing seat and the second gland are both split structures, the second sealing seat includes a first half seat body and a second half seat body, the first half seat body and the second half seat body are respectively located on both sides of the inner sleeve, the second gland includes a first half cover body and a second half cover body, the first half cover body and the second half cover body are respectively located on both sides of the inner sleeve; or,

[0011] The second sealing seat and the second pressure cover are both integrally formed structures and are closed along the circumferential direction.

[0012] In one possible implementation manner, the second sealing seat and the first pressure cover are welded, the inner diameter of the second sealing seat is larger than the outer diameter of the inner sleeve, the inner diameter of the second pressure cover is larger than the outer diameter of the inner sleeve, the outer diameter of the second pressure cover protrusion is smaller than the inner diameter of the second sealing seat, and the second pressure cover protrusion can be inserted into the accommodating cavity and move along the circumference of the inner sleeve.

[0013] In one embodiment, the second sealing member includes a second sealing seat, a second pressure cover, a second flexible filler and a second fastening bolt, the second sealing seat is connected to the first pressure cover, the second sealing seat is sleeved on the outer peripheral side of the inner sleeve and an accommodating cavity is formed between the edge of the tube wall of the inner sleeve, the second flexible filler is arranged in the accommodating cavity, the second pressure cover is sleeved on the outer peripheral side of the inner sleeve, the second sealing seat and the second pressure cover are connected by second bolts, and a part of the second pressure cover can be inserted into the accommodating cavity and squeeze the second flexible filler.

[0014] In one embodiment, the first sealing seat is sleeved on one end of the inner sleeve, the first gland is sleeved on the outer peripheral side of the inner sleeve, an outer flange is provided at one end of the inner sleeve, an inner flange is provided on the first sealing seat, and the inner flange is located between the outer flange and the reducer, so as to form a stopper for the inner sleeve to move away from the reducer;

[0015] A centering bearing is provided between the first sealing seat and the inner sleeve and between the first pressure cover and the inner sleeve, so that the inner sleeve can rotate with its own axis as the rotation center.

[0016] In one possible implementation manner, a groove is formed between the first sealing seat and the tube wall of the inner sleeve, a first flexible filler is arranged in the groove, a first fastening bolt is arranged between the first sealing seat and the first pressure cover, and the first fastening bolt is used to adjust the distance between the first sealing seat and the first pressure cover so that a part of the first pressure cover is inserted into the groove and squeezes the first flexible filler.

[0017] A second aspect of the present invention provides a pipeline system, comprising the rotary compensator described in any one of the first aspects, wherein the rotary compensator is used to connect pipe fittings.

[0018] In one embodiment, the pipeline system includes a first pipe fitting, a second pipe fitting and a third pipe fitting, a first rotation compensator is provided between the first pipe fitting and the second pipe fitting, and a second rotation compensator is provided between the second pipe fitting and the third pipe fitting;

[0019] The pipeline system also includes a fixed bracket and a sliding bracket for supporting the pipe fittings, and the length of the sliding bracket is greater than 600 mm.

[0020] Beneficial technical effects of the present invention: According to the contents of the present disclosure, the rotary compensator can install a second seal on the first seal without stopping the vehicle. The second seal includes a second sealing seat, a second pressure cover, a second flexible filler and a second fastening bolt. The second pressure cover is adjusted by the second fastening bolt to move toward the second sealing seat and fixed, so that the second pressure cover squeezes the second flexible filler to fill the gap between the inner sleeve, the first seal and the second seal. The double sealing structure greatly improves the sealing performance. A glue injection hole is opened on the sealing seat, and glue can be added to the flexible filler position through the glue injection hole to supplement leakage caused by filler failure and wear loss in this part, which is convenient for emergency treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the accompanying drawings, the following are given by way of example and not limitation:

[0022] Figure 1 A structural cross-sectional view of a rotary compensator is shown;

[0023] Figure 2 A structural cross-sectional view of a first sealing member, a second sealing member and a glue injection device is shown;

[0024] Figure 3 A structural cross-sectional view of the first sealing member, the reducer and the inner sleeve is shown;

[0025] Figure 4 A schematic diagram of the piping system structure is shown;

[0026] Figure 5 A schematic diagram of pipe fittings of a piping system is shown.

[0027] In the figure: 1, rotary compensator; 2, pipeline system; 11, first sealing member; 12, reducer; 13, inner sleeve; 14, second sealing member; 15, injection hole; 16, injection joint; 21, first pipe fitting; 22, second pipe fitting; 23, third pipe fitting; 24, sliding bracket; 25, fixed bracket;

[0028] 111. First sealing seat; 112. First pressure cover; 113. First flexible packing; 114. First fastening bolt; 115. Centering bearing; 141. Second sealing seat; 142. Second pressure cover; 143. Second flexible packing; 144. Second fastening bolt. DETAILED DESCRIPTION

[0029] In the following detailed disclosure, these embodiments are fully described with reference to the accompanying drawings. In order to make the technical scheme of the present invention more clear and specific to those skilled in the art, the implementation methods described below are not limited to this. The present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings.

[0030] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0032] The first aspect of the present invention, as Figure 1 and Figure 2 As shown, a rotary compensator 1 is provided, comprising a reducer 12, an inner sleeve 13, a first seal 11 and a second seal 14, wherein the first seal 11 is connected to the reducer 12, the first seal 11 and the second seal 14 are connected, and the first seal 11 and the second seal 14 are both sleeved on the outer peripheral side of the inner sleeve 13, the first seal 11 comprises a first sealing seat 111, a first pressure cover 112, a first flexible filler 113, a first fastening bolt 114 and a centering bearing 115; the second seal 14 comprises a second sealing seat 141, a second pressure cover 142, a second flexible filler 143 and a second fastening bolt 144, the second sealing seat 141 is connected to the first pressure cover 112, and the second sealing seat 141 is sleeved on the outer peripheral side of the inner sleeve 13 A accommodating cavity is formed between the inner sleeve 13 and the tube wall, the second flexible filler 143 is arranged in the accommodating cavity, the second pressure cover 142 is sleeved on the outer peripheral side of the inner sleeve 13, the second sealing seat 141 and the second pressure cover 142 are connected by a second bolt, and a part of the second pressure cover 142 can be inserted into the accommodating cavity and squeeze the second flexible filler 143; wherein, a glue injection hole 15 is opened on the first sealing seat 111, and the glue injection hole 15 is connected to the cavity where the first flexible filler 113 is located; and / or, a glue injection hole 15 is opened on the second sealing seat 141, and the glue injection hole 15 is connected to the cavity where the second flexible filler 143 is located, for injecting filling glue into the cavity where the first flexible filler 113 is located and / or the cavity where the second flexible filler 143 is located through the glue injection hole 15.

[0033] like Figure 2 and Figure 3As shown, the rotary compensator 1 can be equipped with a second seal 14 on the first seal 11 without stopping the vehicle. The first seal 11 and the second seal 14 are both arranged along the axial direction of the inner sleeve 13. The second seal 14 includes a second sealing seat 141, a second pressure cover 142, a second flexible filler 143 and a second fastening bolt 144. The second pressure cover 142 is adjusted by the second fastening bolt 144 to move toward the second sealing seat 141 so that the second pressure cover 142 squeezes the second flexible filler 143 to fill the gap between the inner sleeve 13, the first seal 11 and the second seal 14. The second pressure cover 142 and the second sealing seat 141 are fixed by the second fastening bolt 144, and the sealing performance is greatly improved by the double sealing structure of the first seal 11 and the second seal 14.

[0034] The rotary compensator 1 has a glue injection hole 15 on the sealing seat, through which glue can be added to the flexible filler position to compensate for leakage caused by filler failure and wear loss, thereby greatly improving the sealing performance and facilitating emergency treatment.

[0035] In one possible implementation, Figure 2 As shown, a glue injection joint 16 is provided at the exposed opening of the glue injection hole 15 , and a through hole communicating with the glue injection hole 15 is opened on the glue injection joint 16 .

[0036] It can be understood that the glue injection hole 15 is connected to the chamber where the flexible filler is located and one end leaks out. The leakage opening of the glue injection hole 15 can be movably connected / fixedly connected to the glue injection joint 16, which is convenient for the subsequent use of equipment such as a glue injection gun to align with the glue injection joint 16 and inject the filling glue into the flexible filler position through the glue injection hole 15.

[0037] Among them, the aperture of the glue injection hole 15 can be 3mm~6mm, and the through hole of the glue injection joint 16 is adapted to the glue injection hole 15, that is, the through hole and the glue injection hole 15 are coaxially arranged and have similar apertures. It can be designed specifically according to the size of the sealing seat and the volume of the chamber where the flexible filler is located.

[0038] Furthermore, the diameter of the glue injection hole 15 may be 4 mm to 5 mm.

[0039] In one embodiment, the filler glue includes a flexible graphite fiber material.

[0040] It can be understood that graphite packing is usually used to seal between the inner sleeve 13 and the sealing seat. The graphite packing is mainly made of graphite wires reinforced by various reinforcing fibers, metal wires, etc., and is carefully woven as raw materials. It is suitable for dynamic sealing under high temperature and high pressure conditions and can be used to seal hot water, superheated steam, heat transfer fluids and other media.

[0041] The first flexible filler 113 and the second flexible filler 143 are worn after long-term use, which affects the sealing effect, and the medium may leak from the worn part of the flexible filler. The filling glue includes a flexible graphite fiber material, which can be pressurized by a glue injection gun and other equipment. The filling glue will be deformed by the hydraulic pressure of the hydraulic pump and flow into the position of the flexible filler along the glue injection hole 15. The filling glue has a certain fluidity and can flow by itself and fill the worn position of the flexible filler. The filling glue has the characteristics of non-curing, fast glue discharge, and high temperature resistance.

[0042] For steam pipes with a temperature of about 200°C-450°C, the filling glue is made of flexible graphite fiber material, which can be used below 850°C and can be used in high temperature environments to improve the sealing effect.

[0043] The glue injection joint 16 and the glue injection hole 15 can be fixedly connected or movably connected, and can be fixed on the sealing seat by welding.

[0044] Among them, the glue injection joint 16 and the glue injection hole 15 can be movably connected, the glue injection hole 15 is provided with an internal thread, and the glue injection joint 16 is provided with an external thread adapted to the internal thread. The threaded connection between the glue injection joint 16 and the glue injection hole 15 is detachable, which is convenient for installing, disassembling and replacing the glue injection joint 16.

[0045] In one embodiment, the second sealing seat 141 and the second pressure cover 142 are both split structures, the second sealing seat 141 includes a first half seat body and a second half seat body, the first half seat body and the second half seat body are respectively located on both sides of the inner sleeve 13, and the second pressure cover 142 includes a first half cover body and a second half cover body, the first half cover body and the second half cover body are respectively located on both sides of the inner sleeve 13; or, the second sealing seat 141 and the second pressure cover 142 are both integrally formed structures and are closed along the circumferential direction.

[0046] Among them, when the second sealing seat 141 and the second pressure cover 142 are both split structures, it is more convenient to install the second sealing member 14 on the original first sealing member 11 without stopping the machine, which can ensure the continuity of production operation and improve economy.

[0047] The first half seat body and the second half seat body can be connected by welding or fixed by bolts; the first half cover body and the second half cover body can be connected by welding or fixed by bolts.

[0048] When the second sealing seat 141 and the second pressure cover 142 are both integrally formed structures and closed along the circumferential direction, the overall structure of the second sealing member 14 is more stable.

[0049] In one possible implementation, Figure 1 and Figure 2As shown, the second sealing seat 141 and the first pressure cover 112 are welded, the inner diameter of the second sealing seat 141 is larger than the outer diameter of the inner sleeve 13, the inner diameter of the second pressure cover 142 is larger than the outer diameter of the inner sleeve 13, the outer diameter of the convex portion of the second pressure cover 142 is smaller than the inner diameter of the second sealing seat 141, and the convex portion of the second pressure cover 142 can be inserted into the accommodating cavity and move along the circumferential direction of the inner sleeve 13.

[0050] In specific implementation, the outer edge of the abutment surface of the second sealing seat 141 and the first pressure cover 112 can be circumferentially welded to achieve a fixed connection, and a chamber for accommodating the second flexible filler 143 is formed between the second sealing seat 141 and the inner sleeve 13. A part of the second pressure cover 142 can be inserted between the second sealing seat 141 and the inner sleeve 13 and move along the axial direction of the inner sleeve 13, that is, the convex part of the second pressure cover 142 can be inserted into the chamber where the second flexible filler 143 is located and squeeze the second flexible filler 143 to deform it and seal the gap between the second pressure cover 142, the second sealing seat 141, the first pressure cover 112 and the inner sleeve 13, thereby achieving a secondary sealing effect.

[0051] Among them, the convex part of the second pressure cover 142 can be a ring cylinder, and the cross-sectional area of ​​the convex part is slightly smaller than the cross-sectional area of ​​the chamber where the second flexible filler 143 is located, that is, the convex part of the second pressure cover 142 and the second sealing seat 141 are matched with a small gap, and the convex part of the second pressure cover 142 and the inner sleeve 13 are matched with a small gap.

[0052] Among them, the second sealing member 14 includes a second sealing seat 141, a second pressure cover 142, a second flexible filler 143 and a second fastening bolt 144. The second sealing seat 141 is connected to the first pressure cover 112. The second sealing seat 141 is sleeved on the outer peripheral side of the inner sleeve 13 and an accommodating cavity is formed between the edge and the tube wall of the inner sleeve 13. The second flexible filler 143 is arranged in the accommodating cavity. The second pressure cover 142 is sleeved on the outer peripheral side of the inner sleeve 13. The second sealing seat 141 and the second pressure cover 142 are connected by a second bolt. A part of the second pressure cover 142 can be inserted into the accommodating cavity and squeeze the second flexible filler 143.

[0053] It can be understood that the second flexible filler 143 is placed in the accommodating cavity, that is, the lower end of the second flexible filler 143 is the first pressure cover 112, the inner side is the inner sleeve 13, and the outer side is the second sealing seat 141. The second pressure cover 142 at the upper end of the second flexible filler 143 moves toward the direction close to the first pressure cover 112, and the second pressure cover 142 and the second flexible filler 143 squeeze the second flexible filler 143 to deform until it is tightly fitted with the first pressure cover 112, the inner sleeve 13 and the second sealing seat 141 to achieve a sealing effect, and the position of the second pressure cover 142 is fixed by the second fastening bolts 144.

[0054] In one possible implementation, Figure 2As shown, the first sealing seat 111 is sleeved on one end of the inner sleeve 13, the first pressure cover 112 is sleeved on the outer peripheral side of the inner sleeve 13, one end of the inner sleeve 13 is provided with an outer flange, the first sealing seat 111 is provided with an inner flange, and the inner flange is located between the outer flange and the reducer 12, forming a stop for the movement of the inner sleeve 13 away from the reducer 12.

[0055] A centering bearing 115 is provided between the first sealing seat 111 and the inner sleeve 13 and between the first pressure cover 112 and the inner sleeve 13 so that the inner sleeve 13 can rotate with its own axis as the rotation center.

[0056] It can be understood that the first sealing seat 111 is connected to the reducer 12, and the first sealing seat 111 is sleeved on the outer peripheral side of the inner sleeve 13. The outer flange of the inner sleeve 13 is always connected to the first sealing seat 111 under the restriction of the inner flange of the first sealing seat 111, and the inner sleeve 13 can rotate with its own axis as the rotation center through a qualitative bearing.

[0057] A groove is formed between the first sealing seat 111 and the tube wall of the inner sleeve 13, and a first flexible filler 113 is arranged in the groove. A first fastening bolt 114 is arranged between the first sealing seat 111 and the first pressure cover 112, and the first fastening bolt 114 is used to adjust the distance between the first sealing seat 111 and the first pressure cover 112 so that a part of the first pressure cover 112 is inserted into the groove and squeezes the first flexible filler 113.

[0058] It can be understood that the first flexible filler 113 is placed in the groove, that is, the lower end of the first flexible filler 113 is the inner flange of the first sealing seat 111, the inner side is the inner sleeve 13, and the outer side is the first sealing seat 111. The first pressure cover 112 at the upper end of the first flexible filler 113 moves toward the direction close to the inner flange, and the first pressure cover 112 and the first flexible filler 113 squeeze the first flexible filler 113 to deform until it is tightly fitted with the inner sleeve 13 and the second sealing seat 141 to achieve a sealing effect, and the position of the first pressure cover 112 is fixed by the first fastening bolt 114.

[0059] Among them, the first fastening bolt 114 is arranged along the axial direction of the first seal 11, and the second fastening bolt 144 is arranged along the axial direction of the second seal 14. The distance between the gland and the sealing seat can be adjusted by the fastening bolts, and several fastening bolts are evenly arranged on the sealing seat and the gland along the circumferential direction.

[0060] The first fastening bolt 114 and the second fastening bolt 144 both include a screw rod and a nut.

[0061] The first fastening bolt 114 may include a screw rod and at least two nuts. The screw rod passes through the first sealing seat 111 and the first pressure cover 112 , and both ends of the screw rod are fixed by nuts.

[0062] The second fastening bolt 144 may include a screw rod and at least one nut, one end of the screw rod is threadedly connected or fixedly connected to the second sealing seat 141 , and the other end of the screw rod is fixed by the nut.

[0063] The second aspect of the present invention, as Figure 1-Figure 5 As shown, a pipeline system 2 is provided, comprising a rotary compensator 1 according to any one of the first aspects, and the rotary compensator 1 is used for connecting pipe fittings.

[0064] In one embodiment, the pipeline system 2 includes a first pipe 21 , a second pipe 22 and a third pipe 23 , a first rotation compensator 1 is provided between the first pipe 21 and the second pipe 22 , and a second rotation compensator 1 is provided between the second pipe 22 and the third pipe 23 .

[0065] like Figure 5 As shown in the figure, the arrow is the direction of elongation of the pipe after heating. In this embodiment, the first pipe 21, the second pipe 22 and the third pipe 23 are taken as examples. The elongation of the first pipe 21 drives the first rotary compensator 1 to move to the right, and the elongation of the third pipe 23 drives the second rotary compensator 1 to move to the left. At this time, a part of the first rotary compensator 1 rotates clockwise, and a part of the second rotary compensator 1 rotates clockwise. The second pipe 22 rotates clockwise by a certain angle driven by the first rotary compensator 1 and the second rotary compensator 1. The rotary compensator 1 converts the linear motion of the pipe into rotational motion by rotation, thereby achieving the effect of eliminating the elongation of the pipe after heating.

[0066] In one possible implementation, the pipeline system 2 further includes a fixed bracket 25 and a sliding bracket 24 for supporting pipe fittings, and the length of the sliding bracket 24 is greater than 600 mm.

[0067] Among them, the fixed bracket 25 and the sliding bracket 24 are used to support the pipe fittings. After the pipe fittings are heated and elongated, they can move linearly along the sliding bracket 24. By extending the length of the sliding bracket 24 to more than 600 mm, it is ensured that the pipe fittings always slide on the pipe rack beam on the sliding bracket 24 after being heated and elongated, thereby improving the structural stability.

[0068] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0070] In view of the above detailed description, these and other changes can be made to these embodiments, and this written description includes the best mode embodiments to disclose the present invention. The scope of the patent obtained by the present invention is defined by the claims, which are not limited by the present disclosure, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the scope disclosed by the present invention, according to the technical solution and its conception of the present invention, is equivalent to or changes, and all are within the protection scope of the present invention.

Claims

1. A rotary compensator, characterized in that: The invention comprises a reducer (12), an inner sleeve (13), a first sealing member (11) and a second sealing member (14); the first sealing member (11) is connected to the reducer (12); the first sealing member (11) and the second sealing member (14) are connected; the first sealing member (11) and the second sealing member (14) are both sleeved on the outer peripheral side of the inner sleeve (13); the first sealing member (11) comprises a first sealing seat (111), a first gland (112), a first flexible filler (113), a first fastening bolt (114) and a centering bearing (115); The second sealing member (14) comprises a second sealing seat (141), a second gland (142), a second flexible filler (143) and a second fastening bolt (144); the second sealing seat (141) is connected to the first gland (112); the second sealing seat (141) is sleeved on the outer peripheral side of the inner sleeve (13) and an accommodating cavity is formed between the second sealing seat (141) and the tube wall of the inner sleeve (13); the second flexible filler (143) is arranged in the accommodating cavity; the second gland (142) is sleeved on the outer peripheral side of the inner sleeve (13); the second sealing seat (141) and the second gland (142) are connected by a second bolt; a part of the second gland (142) can be inserted into the accommodating cavity and squeeze the second flexible filler (143); The first sealing seat (111) is provided with a glue injection hole (15), and the glue injection hole (15) is connected to the chamber where the first flexible filler (113) is located; and / or the second sealing seat (141) is provided with a glue injection hole (15), and the glue injection hole (15) is connected to the chamber where the second flexible filler (143) is located, so as to inject filling glue into the chamber where the first flexible filler (113) is located and / or the chamber where the second flexible filler (143) is located through the glue injection hole (15).

2. The rotary compensator according to claim 1, characterized in that: A glue injection joint (16) is provided at the exposed opening of the glue injection hole (15), and a through hole connected to the glue injection hole (15) is provided on the glue injection joint (16), and the filling glue comprises a flexible graphite fiber material.

3. The rotary compensator according to claim 2, characterized in that: The glue injection hole (15) is provided with an internal thread, the glue injection joint (16) is provided with an external thread matching the internal thread, and the glue injection joint (16) is threadedly connected to the glue injection hole (15).

4. The rotary compensator according to claim 1, characterized in that: The second sealing seat (141) and the second gland (142) are both split structures, the second sealing seat (141) comprises a first half seat body and a second half seat body, the first half seat body and the second half seat body are respectively located on both sides of the inner sleeve (13), the second gland (142) comprises a first half cover body and a second half cover body, the first half cover body and the second half cover body are respectively located on both sides of the inner sleeve (13); or, The second sealing seat (141) and the second pressure cover (142) are both integrally formed structures and are closed in the circumferential direction.

5. The rotary compensator according to claim 1, characterized in that: The second sealing seat (141) and the first pressure cover (112) are welded, the inner diameter of the second sealing seat (141) is larger than the outer diameter of the inner sleeve (13), the inner diameter of the second pressure cover (142) is larger than the outer diameter of the inner sleeve (13), the outer diameter of the convex portion of the second pressure cover (142) is smaller than the inner diameter of the second sealing seat (141), and the convex portion of the second pressure cover (142) can be inserted into the accommodating cavity and move along the circumference of the inner sleeve (13).

6. The rotary compensator according to any one of claims 1 to 5, characterized in that: The second sealing member (14) comprises a second sealing seat (141), a second pressure cover (142), a second flexible filler (143) and a second fastening bolt (144); the second sealing seat (141) is connected to the first pressure cover (112); the second sealing seat (141) is sleeved on the outer peripheral side of the inner sleeve (13) and an accommodating cavity is formed between the edge and the tube wall of the inner sleeve (13); the second flexible filler (143) is arranged in the accommodating cavity; the second pressure cover (142) is sleeved on the outer peripheral side of the inner sleeve (13); the second sealing seat (141) and the second pressure cover (142) are connected by a second bolt; a part of the second pressure cover (142) can be inserted into the accommodating cavity and squeeze the second flexible filler (143).

7. The rotary compensator according to claim 6, characterized in that: The first sealing seat (111) is sleeved on one end of the inner sleeve (13), the first pressure cover (112) is sleeved on the outer peripheral side of the inner sleeve (13), one end of the inner sleeve (13) is provided with an outer flange, the first sealing seat (111) is provided with an inner flange, the inner flange is located between the outer flange and the reducer (12), and forms a stop for the movement of the inner sleeve (13) in a direction away from the reducer (12); A centering bearing (115) is provided between the first sealing seat (111) and the inner sleeve (13) and between the first pressure cover (112) and the inner sleeve (13), so that the inner sleeve (13) can rotate with its own axis as the rotation center.

8. The rotary compensator according to claim 7, characterized in that: A groove is formed between the first sealing seat (111) and the tube wall of the inner sleeve (13), and a first flexible filler (113) is arranged in the groove. A first fastening bolt (114) is arranged between the first sealing seat (111) and the first pressure cover (112), and the first fastening bolt (114) is used to adjust the distance between the first sealing seat (111) and the first pressure cover (112) so that a part of the first pressure cover (112) is inserted into the groove and squeezes the first flexible filler (113).

9. A pipeline system, characterized in that: It comprises a rotary compensator as described in any one of claims 1 to 8, wherein the rotary compensator is used to connect pipe fittings.

10. The piping system according to claim 9, characterized in that The pipeline system comprises a first pipe member (21), a second pipe member (22) and a third pipe member (23), a first rotation compensator is arranged between the first pipe member (21) and the second pipe member (22), and a second rotation compensator is arranged between the second pipe member (22) and the third pipe member (23); The pipeline system also includes a fixed bracket (25) and a sliding bracket (24) for supporting the pipe fittings, and the length of the sliding bracket (24) is greater than 600 mm.

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