Sleeve compensator with self-sealing structure

Abstract

The sleeve compensator with the self-sealing structure comprises an inner core pipe, the inner core pipe is arranged in an outer pipe, a moving block and a positioning block are arranged on the two sides of the middle of the outer side of the inner core pipe respectively, and a sealing assembly is arranged on the outer side, located at one end of the positioning block, of the inner core pipe. A second sealing gasket is arranged on the outer side of the end, away from the first protection sleeve, of the inner core pipe and located in one end of the outer pipe, and a second protection sleeve is arranged on the outer side of the end, away from the limiting sleeve base, of the outer pipe. According to the sleeve compensator with the self-sealing structure, by arranging a first sealing gasket, a second sealing gasket and a third sealing gasket, the inner core pipe has good connection sealing performance when moving, and meanwhile the space between one end of the inner core pipe and the supporting ring base is filled with sealing filler; and when a positioning block, a positioning rod, a buffer spring and a third sealing gasket are matched for use, the buffer spring is adopted to form an elastic self-sealing structure, so that the sealing effect is improved, and the sealing performance is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of sleeve compensators, specifically a sleeve compensator with a self-sealing structure. Background Technology

[0002] Sleeve compensators, also known as pipe expansion joints, are compensation devices for hot fluid pipelines. They are mainly used to absorb and compensate for axial thermal expansion displacement that occurs after the laying of straight pipelines. They are compensators that are directly installed in any pipeline transporting non-corrosive unidirectional or multidirectional fluids. Sleeve compensators are widely used in pipelines in industries such as urban heating, mining, power generation, petrochemicals, and construction.

[0003] A search revealed that a typical example of a sleeve compensator in the prior art is disclosed in CN215674196U, which describes a high-strength sleeve compensator. This compensator includes an outer sleeve with a core tube fitted to one side. The outer sleeve has two guide rings inside, one fixedly connected to the inside of the outer sleeve and the other fixedly connected to the top of the core tube. Two auxiliary guide mechanisms are interlaced between the two guide rings and are respectively installed in the middle of the front and back sides of the guide rings. Multiple anti-pull-out mechanisms are fixedly connected to the top end of the core tube, and these mechanisms are all fixedly connected to one side of the guide rings. The gap between the two guide rings is sealed with flexible sealing graphite. This high-strength sleeve compensator is equipped with anti-pull-out mechanisms to withstand stronger axial thermal expansion during sliding motion compensation. A spring and telescopic rod are positioned between the first and second fixed blocks. When sliding occurs, the spring's compression generates a rebound force that offsets part of the sliding force, thus increasing the strength of the sleeve compensator.

[0004] In summary, the existing sleeve compensator suffers from problems such as friction between the core tube and the outer sleeve during core tube movement, leading to wear of the sealing packing and a decrease in sealing performance. To address these issues, improvements to the existing equipment are necessary. Utility Model Content

[0005] The purpose of this utility model is to provide a sleeve compensator with a self-sealing structure to solve the problem mentioned in the background art of existing sleeve compensators where the position between the core tube and the outer tube is such that friction occurs between the core tube and the sealing packing when the core tube moves, causing wear of the sealing packing and resulting in a decrease in sealing performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sleeve compensator with a self-sealing structure, comprising an inner core tube,

[0007] The inner core tube is located inside the outer tube, and mounting flanges are symmetrically arranged on both sides of the outer tube. A moving block and a positioning block are respectively arranged on the outer sides of the inner core tube about the middle. A limiting sleeve is provided on the outer side of one end of the inner core tube near the moving block, and one end of the limiting sleeve is threadedly connected to a threaded groove on the inner side of one end of the outer tube. A first protective sleeve is threadedly connected to the outer side of the inner core tube near the limiting sleeve. A sealing assembly is provided on the outer side of the inner core tube near the positioning block, and a second sealing gasket is provided on the outer side of the inner core tube and the end away from the first protective sleeve. The second sealing gasket is located inside one end of the outer tube, and a second protective sleeve is provided on the outer side of the end of the outer tube away from the limiting sleeve.

[0008] Preferably, the inner core tube, outer tube, limiting sleeve, first protective sleeve, and second protective sleeve are all coated with anti-corrosion and wear-resistant coatings on their inner and outer sides.

[0009] Preferably, the mounting flange on one side is connected to the limiting sleeve by a fixing screw, and the fixing screw passes through the limiting sleeve and is connected to the fixing nut.

[0010] Preferably, a limiting groove is provided on the inner side of the limiting sleeve, and the position of the limiting groove corresponds to the position of the moving block.

[0011] Preferably, the second protective sleeve passes through the corresponding mounting flange and the first sealing gasket via a connecting screw and extends to the outside of the second protective sleeve, while the first sealing gasket is located inside the second protective sleeve near the outer tube.

[0012] Preferably, the sealing assembly includes a support ring seat, sealing filler, a positioning rod, a buffer spring, and a third sealing gasket. The support ring seat is sleeved on the outside of the inner core tube, and the outside of the support ring seat is threaded to the inside of the outer tube. At the same time, the support ring seat and the outer side of the inner core tube near the second protective sleeve are filled with sealing filler. A positioning rod is provided on the outer side of the support ring seat near the positioning block, and the positioning rod passes through the positioning block, the buffer spring, and the third sealing gasket to connect with the inside of the outer tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the sleeve compensator with a self-sealing structure,

[0014] (1) In order to solve the problem that the existing sleeve compensator has a position between the core tube and the outer tube, and the friction between the core tube and the sealing packing during the movement of the core tube causes the sealing packing to wear and the sealing performance to decline, this application sets a first sealing gasket, a second sealing gasket and a third sealing gasket, so that the inner core tube has a better connection and sealing performance when it moves. At the same time, the sealing packing is filled between one end of the inner core tube and the support ring seat. When used with positioning block, positioning rod, buffer spring and third sealing gasket, the buffer spring is used to form an elastic self-sealing structure, thereby improving the sealing effect and sealing performance.

[0015] (2) In order to solve the problem that the existing sleeve compensator is often buried underground, which makes the sealing structure susceptible to underground corrosion and damage, this application sets a first protective sleeve and a second protective sleeve to facilitate the protection of the connection between the inner core tube and the outer tube and the pipeline, thereby improving the sealing performance and extending the service life of the sleeve compensator. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 For this utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 For this utility model Figure 1 Enlarged structural diagram at point B;

[0019] Figure 4 This is a front view structural diagram of the present utility model.

[0020] In the diagram: 1. Inner core tube; 101. Moving block; 102. Positioning block; 2. Outer tube; 201. Mounting flange; 3. Limiting sleeve; 301. Limiting groove; 4. Fixing screw; 5. Fixing nut; 6. First protective sleeve; 7. Second protective sleeve; 8. Connecting screw; 9. First sealing gasket; 10. Second sealing gasket; 11. Support ring seat; 12. Sealing filler; 13. Positioning rod; 14. Buffer spring; 15. Third sealing gasket. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a sleeve compensator with a self-sealing structure, according to... Figure 1 , Figure 2 and Figure 4As shown, the inner core tube 1 is located inside the outer tube 2, and mounting flanges 201 are symmetrically arranged on both sides of the outer tube 2. Simultaneously, a moving block 101 and a positioning block 102 are respectively arranged on the outer sides of the inner core tube 1 about the middle. A limiting sleeve 3 is provided on the outer side of one end of the inner core tube 1 near the moving block 101, and one end of the limiting sleeve 3 is threadedly connected to a threaded groove on the inner side of one end of the outer tube 2. The mounting flange 201 on one side is connected to the limiting sleeve 3 via a fixing screw 4, and the fixing screw 4 passes through the limiting sleeve 3 and is connected to a fixing nut 5. A limiting groove 301 is provided on the inner side of the limiting sleeve 3, and the position of the limiting groove 301 corresponds to the position of the moving block 101. Through the limiting sleeve 3, the inner core tube 1 has a certain limiting and guiding property when moving, while reducing the impact of the inner core tube 1 on the inner tube 2. The wear of the wall is mitigated by the threaded connection of a first protective sleeve 6 to the outer side of the inner core tube 1 near the limiting sleeve 3. A second sealing gasket 10 is provided on the outer side of the inner core tube 1 and the side away from the first protective sleeve 6. The second sealing gasket 10 is located inside the outer tube 2. The second sealing gasket 10 improves the sealing performance of the connection between the pipe and the inner core tube 1. A second protective sleeve 7 is provided on the outer side of the outer tube 2 away from the limiting sleeve 3. The second protective sleeve 7 passes through the corresponding mounting flange 201 and the first sealing gasket 9 via a connecting screw 8 and extends to the outer side of the second protective sleeve 7. The first sealing gasket 9 is located inside the second protective sleeve 7 near the outer tube 2. The second protective sleeve 7 and the first sealing gasket 9 facilitate protection at the connection between the outer tube 2 and the pipe, improving the sealing performance of the connection.

[0023] To further explain, the inner core tube 1, outer tube 2, limiting sleeve 3, first protective sleeve 6 and second protective sleeve 7 are all coated with anti-corrosion and wear-resistant coatings on both the inner and outer sides, which further improves the service life of the inner core tube 1, outer tube 2, limiting sleeve 3, first protective sleeve 6 and second protective sleeve 7, so that they have a certain degree of wear resistance and corrosion resistance during use.

[0024] according to Figure 1 and Figure 3As shown, a sealing assembly is provided on the outer side of one end of the inner core tube 1 at the positioning block 102. The sealing assembly includes a support ring seat 11, a sealing filler 12, a positioning rod 13, a buffer spring 14, and a third sealing gasket 15. The support ring seat 11 is sleeved on the outer side of the inner core tube 1, and the outer side of the support ring seat 11 is threadedly connected to the inner side of the outer tube 2. At the same time, the outer side of the support ring seat 11 and the inner core tube 1 near the second protective sleeve 7 is filled with the sealing filler 12. The support ring seat 11 facilitates the limitation of the position of the sealing filler 12, so that the sealing filler 12 is positioned relative to the inner core tube. One end of the inner core tube 1 is sealed at the connection with the inner part of the outer tube 2 to improve the sealing effect. A positioning rod 13 is provided on the outer side of the support ring seat 11 near the positioning block 102. The positioning rod 13 passes through the positioning block 102, the buffer spring 14 and the third sealing gasket 15 and is connected to the inner part of the outer tube 2. The inner core tube 1 drives the positioning block 102 to move on the positioning rod 13 and squeezes the buffer spring 14, so that one end of the inner core tube 1 moves on one side of the third sealing gasket 15. The buffer spring 14 forms an elastic self-sealing structure, thereby improving the sealing effect and sealing performance.

[0025] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sleeve compensator with a self-sealing structure, comprising an inner core tube (1), characterized in that: The inner core tube (1) is located inside the outer tube (2), and mounting flanges (201) are symmetrically arranged on both sides of the outer tube (2). At the same time, a moving block (101) and a positioning block (102) are respectively arranged on the outer side of the inner core tube (1) about the middle side. A limiting sleeve (3) is provided on the outer side of the inner core tube (1) at one end of the moving block (101), and one end of the limiting sleeve (3) is threadedly connected to a threaded groove opened on the inner side of one end of the outer tube (2). At the same time, a first protective sleeve (6) is threadedly connected on the outer side of the inner core tube (1) near the limiting sleeve (3). A sealing component is provided on the outer side of the inner core tube (1) at one end of the positioning block (102), and a second sealing gasket (10) is provided on the outer side of the inner core tube (1) at the end away from the first protective sleeve (6). At the same time, the second sealing gasket (10) is located inside one end of the outer tube (2), and a second protective sleeve (7) is provided on the outer side of the outer tube (2) at the end away from the limiting sleeve (3).

2. The sleeve compensator with a self-sealing structure as described in claim 1, characterized in that: The inner core tube (1), outer tube (2), limiting sleeve (3), first protective sleeve (6), and second protective sleeve (7) are all coated with anti-corrosion and wear-resistant coatings on their inner and outer sides.

3. The sleeve compensator with a self-sealing structure as described in claim 1, characterized in that: The mounting flange (201) on one side is connected to the limiting sleeve (3) by a fixing screw (4), and the fixing screw (4) passes through the limiting sleeve (3) and is connected to the fixing nut (5).

4. The sleeve compensator with a self-sealing structure as described in claim 1, characterized in that: The limiting sleeve (3) has a limiting groove (301) on its inner side, and the position of the limiting groove (301) corresponds to the position of the moving block (101).

5. The sleeve compensator with a self-sealing structure as described in claim 1, characterized in that: The second protective sleeve (7) passes through the corresponding mounting flange (201) and the first sealing gasket (9) via the connecting screw (8) and extends to the outside of the second protective sleeve (7). Meanwhile, the first sealing gasket (9) is located inside the second protective sleeve (7) on the side close to the outer tube (2).

6. The sleeve compensator with a self-sealing structure as described in claim 1, characterized in that: The sealing assembly includes a support ring seat (11), sealing filler (12), positioning rod (13), buffer spring (14), and third sealing gasket (15). The support ring seat (11) is sleeved on the outside of the inner core tube (1), and the outside of the support ring seat (11) is threaded to the inside of the outer tube (2). At the same time, the support ring seat (11) and the outer side of the inner core tube (1) near the second protective sleeve (7) are filled with sealing filler (12). The outer side of the support ring seat (11) near the positioning block (102) is provided with a positioning rod (13), and the positioning rod (13) passes through the positioning block (102), the buffer spring (14), and the third sealing gasket (15) and is connected to the inside of the outer tube (2).

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