Non-thrust sleeve compensator

Abstract

The utility model discloses a thrust-free sleeve compensator, which relates to the technical field of compensators and comprises a core tube and a sealing seat, the bottom of the core tube is inserted into the sealing seat, the top end of the sealing seat is fixedly connected with a first connecting ring, the top of the first connecting ring is provided with a second connecting ring, and the inner wall of the second connecting ring is fixedly connected with a connecting seat. The non-thrust sleeve compensator is characterized in that a connecting seat is arranged on the inner wall of the sealing seat, a protrusion is arranged on the inner wall of the connecting seat, sealing filler is filled between the connecting seat and the protrusion arranged on the inner wall of the sealing seat, a containing cavity is formed in the middle of the interior of the protrusion, and a channel is formed in one side of the containing cavity. Under long-term use, when sliding compensation of the core tube is blocked, the limiting rod at the bottom can be adjusted from the rotating plate outside the compensator to move out and lock the movable rubber column, so that a proper amount of lubricant is controlled to flow out and be smeared on the sliding displacement surface of the core tube to enhance lubrication.

Description

Technical Field

[0001] The utility model relates to the technical field of compensators, in particular to a thrust-free sleeve compensator. Background Art

[0002] Sleeve compensator is also called tubular expansion joint, which is a compensation device for hot fluid pipelines. It is mainly used for absorbing and compensating the axial thermal expansion displacement that occurs after the auxiliary installation of straight pipelines. It is a compensator that is directly installed in any pipeline that conveys non-corrosive unidirectional or multi-directional fluids. Sleeve compensator mainly consists of sleeve (core tube), shell, sealing material, etc. Among them, the thrust-free sleeve compensator adopts a new type of sealing material, flexible graphite ring, which has the characteristics of high strength, no aging, good effect, and easy maintenance.

[0003] Since the sleeve compensator achieves compensation by means of the sliding displacement of the core tube, the smooth sliding of the core tube is very important during long-term use. The existing sleeve compensator may be easily blocked due to the presence of jams in the displacement connection during long-term use, which affects the normal compensation function. In addition, the internal sealing packing of the thrustless sleeve compensator needs to be replaced in time. When leakage occurs due to failure to replace it, the internal fluid leakage cannot be prevented. At the same time, trace leakage is not easy to detect and cannot be dealt with in time. Utility Model Content

[0004] The purpose of the present utility model is to provide a thrust-free sleeve compensator to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a thrust-free sleeve compensator, comprising a core tube and a sealing seat, wherein the bottom of the core tube is inserted into the interior of the sealing seat, the top of the sealing seat is fixedly connected to a first connecting ring, the top of the first connecting ring is provided with a second connecting ring, the inner wall of the second connecting ring is fixedly connected to a connecting seat, a sealing filler is filled between the connecting seat and a protrusion provided on the inner wall of the sealing seat, an accommodating cavity is provided in the middle of the interior of the protrusion, a channel is provided on one side of the accommodating cavity, a movable rubber column is rotatably connected to the interior of the channel, and a plurality of triangular grooves are equidistantly provided on the surface of the movable rubber column;

[0006] The top of the connecting seat is fixedly connected with an annular cover, the interior of the annular cover is filled with water-swelling material, the inner wall of the annular cover is in contact with the outer wall of the core tube, and a pit is provided in the middle of the annular cover.

[0007] As a preferred technical solution of the present invention, a plurality of screws are passed through between the first connecting ring and the second connecting ring, and both ends of the screws are threadedly connected with nuts.

[0008] Through the above technical solution, the connection function between the second connecting ring and the first connecting ring is achieved.

[0009] As a preferred technical solution of the present invention, a connecting pipe is fixedly connected to the bottom end of the sealing seat.

[0010] Through the above technical solution, the external pipeline is taken over.

[0011] As a preferred technical solution of the present invention, the interior of the accommodating cavity is filled with lubricant, and the accommodating cavity is communicated with the interior of the channel.

[0012] Through the above technical solution, the lubricant is selected to be a lubricant that does not react with the sealing filler and the internal flowing liquid, and the lubricant can flow from the channel to the outer wall of the core tube.

[0013] As a preferred technical solution of the present invention, a limiting rod is inserted into the interior of the accommodating cavity, and one end of the limiting rod is fixedly connected to a threaded rod.

[0014] Through the above technical solution, the limiting rod realizes the limiting function, and the threaded rod realizes the movement adjustment of the limiting rod.

[0015] As a preferred technical solution of the present invention, the threaded rod is threadedly connected to the sealing seat, one end of the threaded rod is fixedly connected to a rotating plate, and a tool groove is provided on the surface of the rotating plate.

[0016] Through the above technical solution, the rotating plate is arranged on the outside of the compensator, that is, the rotating plate can be operated by external operation and adjustment to drive the movement of the internal limit rod. The compensator does not need to be disassembled during the lubrication process. The shape of the tool slot matches the shape of the existing screwdriver, and the rotating plate can be rotated by inserting a screwdriver.

[0017] As a preferred technical solution of the present invention, one end of the limiting rod away from the threaded rod is inserted into the interior of one of the triangular grooves, and the side wall of the movable rubber column is in contact with the outer wall of the core tube.

[0018] Through the above technical solution, inserting one of the Mitsubishi grooves can limit the rotation of the movable rubber column, prevent the continuous outflow of lubricant, and control the amount of lubricant.

[0019] As a preferred technical solution of the present invention, the annular cover is made of high-temperature resistant rubber, and the water-absorbing and expanding material is made of water-absorbing and expanding resin.

[0020] Through the above technical solution, the water-swellable resin will expand in volume after absorbing the leaked solution, thereby notifying the operator of the leakage problem in a more obvious way.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The utility model provides an accommodating cavity in the protrusion of the inner wall of the sealing seat, and cooperates with a movable rubber column rotating on one side, a limit rod and a threaded rod. When the sliding compensation of the core tube is blocked during long-term use, the bottom limit rod can be adjusted from the rotating plate outside the compensator to move out and lock the movable rubber column, thereby controlling the outflow of an appropriate amount of lubricant and applying it to the sliding displacement surface of the core tube to enhance lubrication and avoid the increase in resistance at the sliding connection after long-term use that affects the normal telescopic compensation. The operation and adjustment process does not require disassembly of the compensator, and can be adjusted from the outside with the help of a screwdriver or other tool.

[0023] 2. The utility model provides an annular cover and a water-swelling material filled inside the annular cover. When the sealing filler loses its sealing effect and the internal hot solution flows out, the leaked solution can be absorbed and blocked. At the same time, the water-swelling material expands in volume after encountering the hot solution, causing the pit of the annular cover to bulge. In this way, during normal inspections, by observing whether the pit of the annular cover is convex or concave, it can be known whether there is an internal leakage. In this way, even a slight leak can be clearly alerted to the maintenance personnel, and timely corresponding treatment can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 It is a cross-sectional view of the utility model;

[0026] Figure 3 for Figure 2 Schematic diagram of the structure at point A.

[0027] In the figure: 1. core tube; 2. sealing seat; 3. first connecting ring; 4. second connecting ring; 5. screw; 6. sealing filler; 7. connecting seat; 8. annular cover; 9. pit; 10. water-swelling material; 11. accommodating cavity; 12. lubricant; 13. channel; 14. movable rubber column; 15. threaded rod; 16. limit rod; 17. rotating plate; 18. connecting pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1 to 3 , the utility model provides a technical solution of a thrust-free sleeve compensator:

[0030] Example 1:

[0031] according to Figure 1 、 Figure 2 and Figure 3 As shown, a thrust-free sleeve compensator includes a core tube 1 and a sealing seat 2. The bottom of the core tube 1 is inserted into the interior of the sealing seat 2. The top of the sealing seat 2 is fixedly connected with a first connecting ring 3. The top of the first connecting ring 3 is provided with a second connecting ring 4. The inner wall of the second connecting ring 4 is fixedly connected with a connecting seat 7. A sealing filler 6 is filled between the connecting seat 7 and the protrusion provided on the inner wall of the sealing seat 2. The sealing filler 6 is a flexible graphite ring. An accommodating cavity 11 is provided in the middle of the protrusion. A channel 13 is provided on one side of the accommodating cavity 11. A movable rubber column 14 is rotatably connected to the interior of the channel 13. A plurality of triangular grooves are equidistantly provided on the surface of the movable rubber column 14.

[0032] There are multiple screws 5 passing through the first connecting ring 3 and the second connecting ring 4, and both ends of the screws 5 are threadedly connected to nuts. The bottom end of the sealing seat 2 is fixedly connected to a connecting pipe 18, and the interior of the accommodating chamber 11 is filled with lubricant 12. The lubricant 12 is of a type that does not react with the solution in the current pipeline. In this way, the lubricant 12 applied to the outer wall of the core tube 1 will not affect the characteristics of the solution even if a trace amount enters the solution. This type of compensator is used for solution diversion with low purity requirements. The accommodating chamber 11 is connected to the interior of the channel 13, and a limiting rod 16 is inserted into the interior of the accommodating chamber 11. One end of the limiting rod 16 is fixedly connected to a threaded rod 15, which is threadedly connected to the sealing seat 2. One end of the threaded rod 15 is fixedly connected to a rotating plate 17. A tool groove is provided on the surface of the rotating plate 17. The end of the limiting rod 16 away from the threaded rod 15 is inserted into the interior of one of the triangular grooves, and the side wall of the movable rubber column 14 fits the outer wall of the core tube 1.

[0033] When used specifically, the utility model is a thrust-free sleeve compensator. The core tube 1 and the pipe 18 are connected to the pipes at both ends. A hot solution is injected into the core tube 1 and diverted from the pipe 18. When the pipe body is heated and expanded to produce stretching, the core tube 1 slides relative to the sealing seat 2 to compensate for the stretching force. Under long-term use, if the sliding displacement of the core tube 1 is blocked, an external tool, such as a screwdriver, can be inserted into the tool groove of the rotating plate 17 to rotate the rotating plate 17, thereby driving the rotation of the threaded rod 15, so that the threaded rod 15 is screwed out a section, so that the threaded rod 15 is fixed to the threaded rod 15. The limiting rod 16 will move out of the triangular groove, thereby losing its limiting effect on the movable rubber column 14. The lubricant 12 inside the accommodating chamber 11 will enter part of the triangular groove through the channel 13. Under the subsequent sliding displacement of the core tube 1, the movable rubber column 14 that fits therewith will be moved, so that a small amount of lubricant 12 is smeared on the outer wall of the core tube 1. Then the rotating plate 17 is reversed, so that the limiting rod 16 is inserted into the triangular groove again to achieve limiting, and the lubricant 12 is controlled to flow out in an appropriate amount for use, so as to avoid the increase of resistance at the sliding connection after long-term use, affecting the normal telescopic compensation.

[0034] Example 2:

[0035] Based on the first embodiment, Figure 1 and Figure 2 As shown, the top of the connecting seat 7 is fixedly connected to a ring cover 8, the interior of the ring cover 8 is filled with a water-absorbing and expanding material 10, the inner wall of the ring cover 8 fits with the outer wall of the core tube 1, and a pit 9 is provided in the middle of the ring cover 8. The ring cover 8 is made of high-temperature resistant rubber, and the water-absorbing and expanding material 10 is made of water-absorbing and expanding resin. After absorbing the leaked solution, the volume will expand, causing the pit 9 to bulge, which clearly reminds the operator that a leakage has occurred here. At the same time, a small amount of leakage will also be absorbed and processed and will not overflow into the environment.

[0036] During specific use, the utility model provides a thrust-free sleeve compensator. In the telescopic compensation of the compensator, the sealing filler 6 between the connecting seat 7 and the sealing seat 2 ensures the sealing between the core tube 1 and the connecting pipe 18. Once the sealing filler 6 is damaged and the hot solution leaks from the connecting gap, the leaked hot solution will enter the annular cover 8. The annular cover 8 is filled with water-absorbing and expanding material 10 to solve the problem of leakage of a small amount of solution, absorb and block the leaked solution, and at the same time, the water-absorbing and expanding material 10 expands in volume after encountering the hot solution, causing the pit 9 of the annular cover 8 to bulge. In this way, the operator can observe the state of the pit 9 of the annular cover 8 during normal inspection to know whether there is a leak inside. In this way, even a slight leak can be clearly prompted to the maintenance personnel, and timely corresponding processing can be carried out.

[0037] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" 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 descriptions with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more schemes or examples.

Claims

1. A thrust-free sleeve compensator, comprising a core tube (1) and a sealing seat (2), characterized in that: The bottom of the core tube (1) is inserted into the interior of the sealing seat (2), the top of the sealing seat (2) is fixedly connected to a first connecting ring (3), the top of the first connecting ring (3) is provided with a second connecting ring (4), the inner wall of the second connecting ring (4) is fixedly connected to a connecting seat (7), a sealing filler (6) is filled between the connecting seat (7) and a protrusion provided on the inner wall of the sealing seat (2), a receiving cavity (11) is provided in the middle of the protrusion, a channel (13) is provided on one side of the receiving cavity (11), a movable rubber column (14) is rotatably connected to the interior of the channel (13), and a plurality of triangular grooves are provided on the surface of the movable rubber column (14) at equal intervals; The top end of the connecting seat (7) is fixedly connected to an annular cover (8), the interior of the annular cover (8) is filled with a water-absorbing expansion material (10), the inner wall of the annular cover (8) is in contact with the outer wall of the core tube (1), and a recess (9) is provided in the middle of the annular cover (8).

2. The thrustless sleeve compensator according to claim 1, characterized in that: A plurality of screw rods (5) pass through the first connecting ring (3) and the second connecting ring (4), and both ends of the screw rods (5) are threadedly connected to nuts.

3. The thrustless sleeve compensator according to claim 1, characterized in that: The bottom end of the sealing seat (2) is fixedly connected to a connecting pipe (18).

4. The thrustless sleeve compensator according to claim 1, characterized in that: The interior of the accommodating cavity (11) is filled with lubricant (12), and the accommodating cavity (11) is communicated with the interior of the channel (13).

5. The thrustless sleeve compensator according to claim 1, characterized in that: A limiting rod (16) is inserted into the interior of the accommodating cavity (11), and one end of the limiting rod (16) is fixedly connected to a threaded rod (15).

6. The thrustless sleeve compensator according to claim 5, characterized in that: The threaded rod (15) is threadedly connected to the sealing seat (2), and one end of the threaded rod (15) is fixedly connected to a rotating plate (17), and a tool groove is provided on the surface of the rotating plate (17).

7. The thrustless sleeve compensator according to claim 6, characterized in that: One end of the limiting rod (16) away from the threaded rod (15) is inserted into the interior of one of the triangular grooves, and the side wall of the movable rubber column (14) is in contact with the outer wall of the core tube (1).

8. The thrustless sleeve compensator according to claim 1, characterized in that: The annular cover (8) is made of high-temperature resistant rubber, and the water-absorbing and expanding material (10) is made of water-absorbing and expanding resin.

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