Direct-buried waterproof maintenance-free sleeve compensator

Abstract

This utility model discloses a direct-buried waterproof and maintenance-free sleeve compensator, relating to the field of sleeve compensators. It includes a sleeve compensator body, with a cylindrical helical compression spring installed on the outer wall of the body, and a balance ring installed on the side wall of the cylindrical helical compression spring. This utility model achieves a maintenance-free effect through the arrangement of the sleeve compensator body, cylindrical helical compression spring, balance ring, bellows, outer protective cover, and soil-proof cover. By adopting the technical solution of adding a cylindrical helical compression spring and a balance ring, it achieves a maintenance-free effect. The addition of a stainless steel bellows to the sliding surface of the core tube of the sleeve compensator body and the outer side of the maintenance-free structure achieves a waterproof effect. The addition of an outer protective cover to the outside of the bellows enables direct burial. This design not only improves the reliability of the equipment but also enhances its practicality.

Description

Technical Field

[0001] This utility model relates to the field of sleeve compensators, specifically a direct-buried waterproof and maintenance-free sleeve compensator. Background Technology

[0002] Sleeve compensators are widely used in heating network pipelines as a type of compensation device. Heating is a vital public service, making the quality and performance of these products particularly important. Currently, sleeve compensators on the market suffer from problems such as packing wear and leakage during use, short service life, and difficult maintenance. Furthermore, in some projects with high groundwater levels, when leaks occur at the insulation joint, groundwater or river water can penetrate the polyurethane insulation layer and boil at high temperatures. After being immersed in hot water, the polyurethane's cavitation structure gradually disappears, its volume decreases, and eventually the entire insulation layer's cavitation structure is eliminated. At this point, the sleeve compensator, constantly immersed in muddy water, causes corrosion and failure of the core tube sliding surface and the maintenance-free tension spring, leading to leakage. Therefore, directly buried waterproof maintenance-free sleeve compensators are needed.

[0003] Existing sleeve compensators are difficult to operate and maintain, have poor sealing performance, and are prone to leakage. Therefore, there is an urgent need for direct-buried waterproof and maintenance-free sleeve compensators. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a direct-buried waterproof maintenance-free sleeve compensator to solve the problems of existing sleeve compensators being difficult to maintain, having poor sealing effect, and being prone to leakage during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a direct-buried waterproof maintenance-free sleeve compensator, comprising a sleeve compensator body, a cylindrical helical compression spring installed on the outer wall of the sleeve compensator body, a balance ring installed on the side wall of the cylindrical helical compression spring, a bellows installed on the top of the outer sleeve compensator body, an outer protective cover installed on the top of the sleeve compensator body, and a soil-proof cover installed on the side wall of the outer protective cover.

[0006] Preferably, the cylindrical helical compression spring is movably connected to the sleeve compensator body, and the sleeve compensator body is threadedly connected to the balance ring.

[0007] Preferably, the bellows is U-shaped and is welded to the body of the sleeve compensator.

[0008] Preferably, the sleeve compensator body is bonded to the outer protective cover, and the outer protective cover is bonded to the soil barrier cover.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model, through the design of a sleeve compensator body, a cylindrical helical compression spring, a balance ring, a bellows, an outer protective cover, and a soil-proof cover, achieves a maintenance-free effect by adding a cylindrical helical compression spring and a balance ring. The addition of a stainless steel bellows to the sliding surface of the core tube of the sleeve compensator body and the outer side of the maintenance-free structure provides waterproofing. The addition of an outer protective cover to the bellows enables direct burial. This design not only improves the reliability of the equipment but also enhances its practicality. Attached Figure Description

[0011] Figure 1 is a vertical view of the present invention;

[0012] Figure 2 is an enlarged structural schematic diagram of point A in Figure 1 of this utility model.

[0013] In the diagram: 1. Sleeve compensator body; 2. Cylindrical helical compression spring; 3. Balance ring; 4. Bellows; 5. Outer protective cover; 6. Soil barrier. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0015] The embodiments of this utility model will be described below based on its overall structure.

[0016] Please refer to Figure 1- Figure 2A direct-buried, waterproof, maintenance-free sleeve compensator includes a sleeve compensator body 1. A cylindrical helical compression spring 2 is installed on the outer wall of the sleeve compensator body 1. A balance ring 3 is installed on the side wall of the cylindrical helical compression spring 2. A bellows pipe 4 is installed on the top of the sleeve compensator body 1. An outer protective cover 5 is installed on the top of the sleeve compensator body 1. A soil-proof cover 6 is installed on the side wall of the outer protective cover 5. The cylindrical helical compression spring 2 is movably connected to the sleeve compensator body 1, and the sleeve compensator body 1 is threadedly connected to the balance ring 3. The bellows 4 is U-shaped and welded to the sleeve compensator body 1. The sleeve compensator body 1 is bonded to the outer protective cover 5, and the outer protective cover 5 is bonded to the soil-proof cover 6. When using the device, a cylindrical helical compression spring 2 is added to the structure of the sleeve compensator body 1. Together with the balance ring 3, it can solve the problem of leakage caused by the reduction of the packing gland clamping force due to the long-term expansion and contraction wear of the core tube, which requires no maintenance. A stainless steel bellows 4 is installed on the sliding surface of the core tube and the outside of the maintenance-free device to effectively prevent external mud and water from corroding the core tube and the maintenance-free device. At the same time, it can provide a secondary seal in case of slight leakage in the sleeve compensator body 1 after long-term use, thus extending the service life of the product. An outer protective cover 5 is installed on the outside of the bellows 4 to effectively isolate the polyurethane foam and soil from intrusion, preventing the bellows 4 from being corroded and contaminated, and ensuring that the sleeve compensator body 1 is not affected. In addition, a soil isolation cover 6 is installed at the moving part of the outer protective cover 5 to effectively prevent mud and water from entering the inner cavity of the outer protective cover 5 and prevent groundwater from corroding the waterproof bellows 4. It can solve the problem of leakage caused by the reduction of the packing gland clamping force due to the long-term expansion and contraction wear of the core tube, which requires no maintenance and also plays a maintenance-free role. At the same time, it can effectively prevent external contamination of the core tube surface, sealing material and maintenance-free device.

[0017] Working principle: In use, first move the device to a suitable position, then install the cylindrical helical compression spring 2 and the balance ring 3 on the sleeve compensator body 1 respectively. This prevents packing wear and leakage, eliminating the need for subsequent maintenance. Then, weld the bellows 4 onto the sleeve compensator body 1. This reduces the erosion of the device's core tube and maintenance-free structure by external mud and water, while also enhancing the sealing performance of the sleeve compensator body 1 and extending its service life. Next, install the outer protective cover 5 on the sleeve compensator body 1 to prevent polyurethane foam or soil from affecting the bellows 4 and the sleeve compensator body 1. Then, install the soil isolation cover 6 at the movable part of the outer protective cover 5 to prevent external mud and water from entering the interior of the outer protective cover 5 and to prevent groundwater from eroding the bellows 4. This completes the device's operation. Content not described in detail in this manual belongs to prior art known to those skilled in the art.

[0018] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A direct-buried waterproof maintenance-free sleeve compensator, comprising a sleeve compensator body (1), characterized in that: A cylindrical helical compression spring (2) is installed on the outer wall of the sleeve compensator body (1), a balance ring (3) is installed on the side wall of the cylindrical helical compression spring (2), a bellows (4) is installed on the top of the sleeve compensator body (1), an outer protective cover (5) is installed on the top of the sleeve compensator body (1), and a soil-proof cover (6) is installed on the side wall of the outer protective cover (5).

2. The direct-buried waterproof maintenance-free sleeve compensator according to claim 1, characterized in that: The cylindrical helical compression spring (2) is movably connected to the sleeve compensator body (1), and the sleeve compensator body (1) is threadedly connected to the balance ring (3).

3. The direct-buried waterproof maintenance-free sleeve compensator according to claim 1, characterized in that: The bellows (4) is U-shaped and is welded to the sleeve compensator body (1).

4. The direct-buried waterproof maintenance-free sleeve compensator according to claim 1, characterized in that: The sleeve compensator body (1) is bonded to the outer protective cover (5), and the outer protective cover (5) is bonded to the soil barrier cover (6).

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