Rotary compensator for pipeline
By introducing an annular sealing box and arc-shaped thermosetting block into the rotary compensator, combined with friction reduction centering bearings and compression bolts, the sealing problem of the rotary compensator in high-temperature and pressure flue gas environment is solved, visual prompts of leakage and rapid positioning are achieved, and the stability and maintenance efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202422615518.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The existing rotary compensator sealing materials are easily damaged in high-temperature and pressure flue gas environments, resulting in leakage and is not easily discovered in time, and cannot effectively prevent leakage and prompt the operator.
A rotary compensator for pipes is designed, using an annular sealed box and arc-shaped thermosetting block structure, combining friction-reducing centering bearings and compression bolts to achieve enhanced sealing, and the leakage position is prompted through the lifting rod and digital plate system.
It improves the rotational stability and sealing of the rotary compensator, can promptly detect and locate the leakage position, and reduces maintenance difficulty and cycle.
Smart Images
Figure CN223165270U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compensators, and particularly relates to a rotary compensator for pipelines. Background Art
[0002] A compensator, also called an expansion joint, refers to a flexible element that can effectively compensate for axial deformation. For example, the expansion joint welded on the shell of a fixed tube-sheet heat exchanger has a large axial flexibility and is easy to deform. It can compensate for the thermal expansion difference between the tube and the shell due to different wall temperatures, reduce their axial loads, thereby reducing the temperature difference stress of the tube, tube sheet and shell, and avoiding strength failure, instability failure and tube pull-off failure.
[0003] A rotary compensator mainly relies on angular displacement to absorb or compensate for lateral displacement in one or more directions of a pipeline. This compensator should be used in pairs, and a single unit has no compensation ability, but it can be used as a universal joint for pipelines. In the flue gas conveying system of thermal power plants, rotary compensators are very common. However, when the existing rotary compensators are in use, due to the internal passage of high-temperature and high-pressure flue gas, after the sealing material is damaged after long-term use, leakage will occur at the connection gap. The existing compensators cannot make corresponding anti-leakage treatments for the leakage, nor can they form obvious prompts externally, and it is not easy for operators to find tiny leakage problems during the inspection process. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a rotary compensator for pipelines to solve the problems raised in the above background art.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A rotary compensator for pipelines, including a rotary cylinder body, a sealing gland is sleeved at the bottom of the rotary cylinder body, a sealing seat is sleeved at the bottom of the sealing gland, a sealing material is filled at the connection gap between the sealing gland and the sealing seat, a circular closed box is fixedly connected to the top end of the sealing seat, a plurality of partition plates are fixedly connected to the inner wall of the circular closed box at equal intervals, the interior of the circular closed box is divided into a plurality of chambers by the plurality of partition plates, and arc-shaped heat-set blocks are arranged in each of the plurality of chambers;
[0006] The top ends of the plurality of arc-shaped heat-set blocks are all fixedly connected with lifting rods, the top ends of the lifting rods are fixedly connected with lifting blocks, a plurality of anti-slip rings are embedded in the top end of the circular closed box at equal intervals, the plurality of lifting rods respectively penetrate through the plurality of anti-slip rings, a digital plate is fixedly embedded in the top end of the lifting block, and a connecting pipe is fixedly connected to the bottom end of the sealing seat.
[0007] As a preferred technical solution of the utility model, a first connecting ring is fixedly connected to the top end of the sealing gland, and a first anti-friction centering bearing is embedded and installed on the inner wall of the first connecting ring.
[0008] Through the above technical solution, the rotational contact friction is reduced while the rotational stability is enhanced.
[0009] As a preferred technical solution of the present utility model, two second connection rings are sequentially and fixedly connected to the outer wall of the sealing seat, and a plurality of pressing bolts are connected between the first connection ring and the two second connection rings.
[0010] Through the above technical solution, a firm connection is achieved by means of the pressing bolts, and disassembly and maintenance can also be carried out subsequently.
[0011] As a preferred technical solution of the present utility model, the pressing bolt includes a screw rod and a nut. The two ends of the screw rod sequentially penetrate through the first connection ring and the two second connection rings, and nuts are threadedly connected to the two ends of the screw rod.
[0012] Through the above technical solution, the structural components are simpler, and compared with complex fastening structures, they are less likely to be damaged and easier to maintain.
[0013] As a preferred technical solution of the present utility model, a second anti-friction centering bearing is embedded and installed on the inner wall of the sealing seat, and the outer wall of the rotating cylinder body is attached to the first anti-friction centering bearing and the second anti-friction centering bearing.
[0014] Through the above technical solution, two symmetrically arranged anti-friction centering bearings can improve the rotational stability.
[0015] As a preferred technical solution of the present utility model, the inner wall of the annular sealed box and one side wall of the partition plate are both in close contact with the outer wall of the sealing gland.
[0016] Through the above technical solution, the partition plate cooperates with the annular sealed box and the sealing gland, and the interior can be divided into multiple independent chambers.
[0017] As a preferred technical solution of the present utility model, an anti-slip sleeve is fixedly sleeved on the outer wall of the lifting rod, and the outer wall of the anti-slip sleeve is attached to the inner wall of the anti-slip ring.
[0018] Through the above technical solution, the sliding friction is increased. Therefore, when the pressure of the leaked flue gas is not high, the leaked flue gas can be blocked by means of the annular sealed box to prevent further leakage. When the leakage pressure is relatively high, the lifting rod will be pushed to rise.
[0019] As a preferred technical solution of the present utility model, the lifting block is placed at the top of the annular sealed box.
[0020] Through the above technical solution, after the lifting block rises, the displacement is more obvious and can be directly observed by the operator with the naked eye.
[0021] Compared with the prior art, the beneficial effects of the present utility model are:
[0022] 1. The utility model strengthens the rotational limit of the rotating cylinder by setting a first anti-friction centering bearing inside the first connecting ring and a second anti-friction centering bearing on the inner wall of the sealing seat. While ensuring its smooth rotation, the stability is better. The annular sealed box arranged at the top of the sealing seat can provide secondary protection for the connection and sealing part. Once there is a leakage of pressurized flue gas, it will enter the annular sealed box. Due to the arc-shaped thermosetting blocks arranged in multiple chambers inside the annular sealed box, it can be cured under the high-temperature catalysis of the pressurized flue gas, thereby further enhancing the internal seal and solving the leakage problem.
[0023] 2. By setting the lifting rod at the top of the arc-shaped thermosetting block and cooperating with the use of the lifting block and the digital plate, the utility model can make the lifting block rise significantly by means of the push of the flue gas. In this way, when the operator conducts maintenance and inspection, by visually observing whether one or more lifting blocks rise, it can be judged whether there is a leakage and the leakage situation. By observing the digital plate on the rising lifting block, the specific leakage position can be determined, so that subsequent rapid positioning and repair can be carried out, reducing the maintenance period and difficulty. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 is a schematic structural diagram of the utility model;
[0025] Figure 2 is a cross-sectional view of the utility model;
[0026] Figure 3 is a cross-sectional view of the annular sealed box of the utility model;
[0027] Figure 4 is a schematic structural diagram of the arc-shaped thermosetting block part of the utility model.
[0028] In the figure: 1. Rotating cylinder; 2. Sealing gland; 3. First connecting ring; 4. First anti-friction centering bearing; 5. Sealing seat; 6. Second connecting ring; 7. Screw; 8. Second anti-friction centering bearing; 9. Sealing material; 10. Annular sealed box; 11. Lifting block; 12. Digital plate; 13. Anti-slip ring; 14. Lifting rod; 15. Anti-slip sleeve; 16. Arc-shaped thermosetting block; 17. Partition plate; 18. Connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0030] Please refer toFigures 1 to 4 , the present utility model provides a technical solution for a rotary compensator for pipelines:
[0031] According to Figure 1 , Figure 2 and Figure 3 , Figure 4 As shown in
[0032] , a rotary compensator for pipelines includes a rotary cylinder body 1. A sealing gland 2 is sleeved at the bottom of the rotary cylinder body 1. A sealing seat 5 is sleeved at the bottom of the sealing gland 2. A sealing material 9 is filled in the connecting gap between the sealing gland 2 and the sealing seat 5. The top end of the sealing seat 5 is fixedly connected with an annular closed box 10. A plurality of partition plates 17 are fixedly connected to the inner wall of the annular closed box 10 at equal intervals. The interior of the annular closed box 10 is divided into a plurality of chambers by the plurality of partition plates 17. Arc-shaped heat-set blocks 16 are arranged in the interiors of the plurality of chambers. The arc-shaped heat-set blocks 16 are made of heat-set materials and could originally slide in the chambers. When high-temperature catalytic curing occurs and according to thermal expansion and contraction, after being fixed, they tightly abut against the inner top wall of the chambers to further block and seal the flue gas and solve the leakage problem;
[0033] The top ends of the plurality of arc-shaped heat-set blocks 16 are all fixedly connected with lifting rods 14. The top ends of the lifting rods 14 are fixedly connected with lifting blocks 11. A plurality of anti-slip rings 13 are embedded in the top end of the annular closed box 10 at equal intervals. The plurality of lifting rods 14 respectively penetrate through the plurality of anti-slip rings 13. A digital plate 12 is fixedly embedded in the top end of the lifting block 11. Numbers are sprayed on the digital plate 12. When the corresponding digital plate 12 rises, during the inspection stage by the operator, the rising numbers can be recorded first, and then the current leakage position can be recorded. During subsequent maintenance, the leakage position can be directly located and found. The bottom end of the sealing seat 5 is fixedly connected with a connecting pipe 18.
[0034] The inner wall of the annular closed box 10 and one side wall of the partition plate 17 are both in close contact with the outer wall of the sealing gland 2. An anti-slip sleeve 15 is fixedly sleeved on the outer wall of the lifting rod 14. The outer wall of the anti-slip sleeve 15 is in contact with the inner wall of the anti-slip ring 13. The lifting block 11 is placed at the top end of the annular closed box 10.
[0035] During specific use, for a rotary compensator for pipelines of the present utility model, during the assembly process, the rotary cylinder 1 and the sealing gland 2 are in rolling contact by means of the internally embedded first anti-friction centering bearing 4 and the second anti-friction centering bearing 8 to ensure the smooth rotation of the rotary cylinder 1. Between the sealing gland 2 and the sealing seat 5, a fastening connection is achieved by means of a plurality of compression bolts between the first connecting ring 3 and the two second connecting rings 6. The rotary cylinder 1 and the connecting pipe 18 are respectively externally connected to pipelines. The sealing material 9 filled at the connection between the sealing gland 2 and the sealing seat 5 increases the sealing performance at the connection after the external pipelines are connected. When the sealing material 9 is worn and leakage occurs here, the leaked pressurized flue gas will enter the annular sealed box 10 along the gap and enter the corresponding chamber, pushing the arc-shaped thermosetting block 16 in this chamber to rise. It will abut against the inner wall at the top of the annular sealed box 10 and then stop. The pressurized flue gas has a high temperature, and the high temperature causes the arc-shaped thermosetting block 16 to gradually solidify. After solidification and molding, it is fixed on the inner wall at the top of the annular sealed box 10 to further seal the annular sealed box 10 and prevent the pressurized flue gas from leaking along this place. It prompts the pressurized flue gas to flow along the rotary cylinder 1 or the connecting pipe 18. At the same time when the arc-shaped thermosetting block 16 rises, it will drive the lifting rod 14 and the lifting block 11 to rise, causing the lifting block 11 originally placed at the top of the annular sealed box 10 to rise significantly. In this way, when an operator inspects the rotary compensator, by visually observing whether one or more lifting blocks 11 rise, it can be determined whether leakage occurs. And according to the number plate 12 on the corresponding rising lifting block 11, the specific leakage location can be determined, and maintenance can be carried out quickly.
[0036] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one solution", "some solutions", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the solution or example are included in at least one solution or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same solution or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more solutions or examples.
Claims
1. A rotary compensator for pipelines, comprising a rotary cylinder body (1), characterized in that: A sealing gland (2) is sleeved at the bottom of the rotating cylinder body (1). A sealing seat (5) is sleeved at the bottom of the sealing gland (2). A sealing material (9) is filled in the connecting gap between the sealing gland (2) and the sealing seat (5). An annular closed box (10) is fixedly connected to the top end of the sealing seat (5). A plurality of partition plates (17) are fixedly connected to the inner wall of the annular closed box (10) at equal intervals. The interior of the annular closed box (10) is divided into a plurality of chambers by the plurality of partition plates (17). Arc-shaped heat-set blocks (16) are arranged in the interiors of the plurality of chambers; The top ends of the plurality of arc-shaped heat-set blocks (16) are fixedly connected with lifting rods (14). The top ends of the lifting rods (14) are fixedly connected with lifting blocks (11). A plurality of anti-slip rings (13) are embedded in the top of the annular closed box (10) at equal intervals. The plurality of lifting rods (14) respectively penetrate through the plurality of anti-slip rings (13). A digital plate (12) is fixedly embedded in the top end of the lifting block (11). A connecting pipe (18) is fixedly connected to the bottom end of the sealing seat (5).
2. The rotary compensator for pipelines according to claim 1, wherein: A first connecting ring (3) is fixedly connected to the top end of the sealing gland (2). A first anti-friction centering bearing (4) is embedded and installed on the inner wall of the first connecting ring (3).
3. The rotary compensator for pipelines according to claim 2, characterized in that: Two second connecting rings (6) are fixedly connected to the outer wall of the sealing seat (5) in sequence. A plurality of compression bolts are connected between the first connecting ring (3) and the two second connecting rings (6).
4. The rotary compensator for pipelines according to claim 3, wherein: The compression bolt comprises a screw rod (7) and nuts. The two end parts of the screw rod (7) penetrate through the first connecting ring (3) and the two second connecting rings (6) in sequence. Nuts are threadedly connected to the two end parts of the screw rod (7).
5. The rotary compensator for pipelines according to claim 4, wherein: A second anti-friction centering bearing (8) is embedded and installed on the inner wall of the sealing seat (5). The outer wall of the rotating cylinder body (1) is in contact with the first anti-friction centering bearing (4) and the second anti-friction centering bearing (8).
6. The rotary compensator for pipelines according to claim 1, characterized in that: The inner wall of the annular closed box (10) and one side wall of the partition plate (17) are both in close contact with the outer wall of the sealing gland (2).
7. The rotary compensator for pipelines according to claim 1, characterized in that: An anti-slip sleeve (15) is fixedly sleeved on the outer wall of the lifting rod (14). The outer wall of the anti-slip sleeve (15) is in contact with the inner wall of the anti-slip ring (13).
8. A rotary compensator for pipelines according to claim 1, characterized in that: The lifting block (11) is placed on the top of the annular closed box (10).