High-pressure-resistant pipeline compensator

Abstract

The utility model discloses a high-pressure-resistant pipeline compensator which comprises a corrugated pipe, flange plates are fixedly connected to the two ends of the corrugated pipe respectively, end covers are arranged at the two ends of the outer wall of the corrugated pipe respectively, a limiting mechanism is arranged between the two end covers jointly, and the limiting mechanism comprises two outer protective cylinders. An inner pile casing is jointly arranged between the two outer pile casings, limiting rings are fixedly connected to the outer side walls of the two ends of the inner pile casing, storage grooves are formed in the ends, close to each other, of the two outer pile casings, each outer pile casing comprises a pressure-resistant outer layer and an inner layer, and a positioning bolt is arranged outside each outer pile casing in a penetrating mode. The limiting mechanism, the outer protective cylinder and the inner protective cylinder are matched with one another, so that a central corrugated structure of the corrugated compensator is conveniently protected, and the corrugated compensator stretches and retracts in cooperation with the length change of the corrugated compensator during pipeline thermal displacement compensation, so that the pipeline compensator keeps good structural strength in a stretching state, and the service life of the pipeline compensator is prolonged. And deformation and damage are not easy to occur when the device is pressed and collided.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline compensators, in particular to a high-pressure resistant pipeline compensator. Background Technique

[0002] A pipeline compensator, also known as an expansion joint or expansion joint, expansion joint, is mainly used to compensate for the thermal expansion and contraction of pipelines caused by temperature changes. If the pipeline cannot expand or contract completely freely when the temperature changes, thermal stress will be generated in the pipeline. This stress must be considered in pipeline design, otherwise it may cause the pipeline to rupture and affect normal production. As an important part of pipeline engineering, the compensator plays an important role in ensuring the long-term normal operation of the pipeline.

[0003] At present, most of the existing corrugated pipeline compensators use their telescopic corrugated structures to compensate for the thermal displacement of the pipeline when in use. However, with the stretching of the corrugated compensator, due to the increase in the length of the corrugated structure, when it is externally collided and heavily pressed, the central corrugated structure is more likely to deform and be damaged, bringing a burden to the pipeline. Therefore, we propose to design a high-pressure resistant pipeline compensator. Content of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the utility model. However, such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] To solve the above technical problems, according to one aspect of the utility model, the following technical solutions are provided:

[0006] A high-pressure resistant pipeline compensator includes a corrugated pipe, both ends of the corrugated pipe are fixedly connected with flange plates, end covers are arranged on both outer walls of the corrugated pipe, and a limiting mechanism is jointly arranged between the two end covers;

[0007] The limiting mechanism includes two outer protection cylinders, an inner protection cylinder is jointly arranged between the two outer protection cylinders, limiting rings are fixedly connected to the outer side walls of both ends of the inner protection cylinder, receiving grooves are opened at one ends of the two outer protection cylinders close to each other, the outer protection cylinder includes a compression-resistant outer layer and an inner layer, and positioning bolts are arranged through the outside of the outer protection cylinder.

[0008] As a preferred scheme of a high-pressure resistant pipeline compensator according to the utility model, wherein both ends of the inner protection cylinder are respectively located inside the two receiving grooves, and the inner protection cylinder is slidably connected to the inner wall of the receiving groove. The inner protection cylinder can slide in the receiving groove to correspondingly adapt to the expansion and contraction of the corrugated pipe.

[0009] As a preferred solution of a high-pressure resistant pipeline compensator according to the present utility model, a limiting groove is provided on the inner wall of the storage groove, and the limiting ring is slidably connected to the limiting groove correspondingly, which is convenient for limiting the inner protection cylinder and preventing both ends thereof from slipping out of the storage groove.

[0010] As a preferred solution of a high-pressure resistant pipeline compensator according to the present utility model, corresponding magnets and iron rings are respectively fixedly connected to one ends of the compression-resistant outer layers of the two outer protection cylinders that are close to each other, and the magnets and the iron rings are attracted to each other by magnetic force. When the two outer protection cylinders are attached to each other, through the mutual attachment and magnetic attraction between the magnets and the iron rings, it is convenient for temporarily positioning the two outer protection cylinders.

[0011] As a preferred solution of a high-pressure resistant pipeline compensator according to the present utility model, screw holes corresponding to the positioning bolts are provided inside both the outer protection cylinder and the limiting ring. The positioning bolt penetrates through the outer protection cylinder and is threadedly connected to the limiting ring, which is convenient for connecting and fixing the outer protection cylinder and the inner protection cylinder, convenient for storage and transportation, and preventing the inner protection cylinder from slipping out of the outer protection cylinder before installation, resulting in an overly long overall length of the two, which is not conducive to installation.

[0012] As a preferred solution of a high-pressure resistant pipeline compensator according to the present utility model, the compression-resistant outer layer is made of wear-resistant engineering plastic material, which is convenient for providing a protective effect for the internal corrugated pipe as an outer layer and is not easily damaged after long-term use.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] Through the mutual cooperation of the limiting mechanism, the outer protection cylinder and the inner protection cylinder, the present utility model is convenient for protecting the central corrugated structure of the corrugated compensator, and expands and contracts in cooperation with the length change during the compensation of the thermal displacement of the pipeline. When the pipeline compensator is in a tensile state, it maintains good structural strength and is not easily deformed and damaged when being compressed and collided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0016] Figure 1 is a three-dimensional structural schematic diagram of a high-pressure resistant pipeline compensator according to the present utility model;

[0017] Figure 2 is a structural schematic diagram of a high-pressure resistant pipeline compensator according to the present utility model;

[0018] Figure 3 Schematic structural diagram of the limit mechanism of a high-pressure resistant pipeline compensator of the present utility model;

[0019] Figure 4 is Figure 3 Schematic diagram of the structure at position A in

[0020] Legend: 1, bellows; 2, flange; 3, end cover; 4, limit mechanism; 401, outer protection cylinder; 402, inner protection cylinder; 403, storage groove; 5, limit ring; 6, limit groove; 7, compressive outer layer; 8, inner layer; 9, magnet; 10, iron ring; 11, positioning bolt; 12, screw hole. Specific embodiments

[0021] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0022] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present utility model here. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0023] In order to make the purpose, technical solution and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Please refer to Figures 1-4 , the present utility model provides a high-pressure resistant pipeline compensator, including a bellows 1, flange plates 2 are fixedly connected to both ends of the bellows 1, end covers 3 are arranged on the outer walls of both ends of the bellows 1, and a limit mechanism 4 is jointly arranged between the two end covers 3.

[0025] The limit mechanism 4 includes two outer protection cylinders 401, an inner protection cylinder 402 is jointly arranged between the two outer protection cylinders 401, limit rings 5 are fixedly connected to the outer side walls of both ends of the inner protection cylinder 402, and storage grooves 403 are opened at one ends of the two outer protection cylinders 401 close to each other.

[0026] Both ends of the inner protection cylinder 402 are respectively located inside the two storage grooves 403, the inner protection cylinder 402 is slidably connected to the inner walls of the storage grooves 403, the inner protection cylinder 402 can slide in the storage grooves 403, and correspondingly adapt to the expansion and contraction of the bellows 1. Limit grooves 6 are opened on the inner walls of the storage grooves 403, and the limit rings 5 are slidably connected to the corresponding limit grooves 6, which is convenient for limiting the inner protection cylinder 402 and preventing its two ends from slipping out of the storage grooves 403.

[0027] The outer casing 401 includes a compressive outer layer 7 and an inner layer 8. Among them, the compressive outer layer 7 is made of wear-resistant engineering plastic. As the outer layer, it is convenient to provide a protective effect for the internal corrugated pipe 1 and is not easily damaged after long-term use.

[0028] At one end of the two outer casings 401 where the compressive outer layers 7 are close to each other, a corresponding magnet 9 and iron ring 10 are respectively fixedly connected. The magnet 9 and the iron ring 10 are attracted by magnetic force. When the two outer casings 401 are attached to each other, through the mutual attachment and magnetic attraction between the magnet 9 and the iron ring 10, it is convenient to temporarily position the two outer casings 401.

[0029] A positioning bolt 11 is disposed through the outside of the outer casing 401. Threaded holes 12 corresponding to the positioning bolt 11 are respectively formed inside the outer casing 401 and the limiting ring 5. The positioning bolt 11 passes through the outer casing 401 and is threadedly connected to the limiting ring 5, which is convenient for connecting and fixing the outer casing 401 and the inner casing 402, facilitating storage and transportation, and preventing the inner casing 402 from slipping out of the outer casing 401 before installation, resulting in an excessively long overall length of the two, which is not conducive to installation.

[0030] In the initial state, the magnet 9 and the iron ring 10 are magnetically attracted to each other to attach the two outer casings 401 to each other. At this time, the inner casing 402 is completely located in the two storage grooves 403. At this time, the positioning bolt 11 is passed through the outer casing 401 and threadedly connected to the limiting ring 5, so that the outer casing 401 and the inner casing 402 can be correspondingly fixed, and the overall length is fixed, facilitating movement and transportation.

[0031] During use, the two end flange plates 2 are connected and connected to the pipeline to be installed. The positioning bolt 11 is unscrewed to disconnect the fixing relationship between the outer casing 401 and the inner casing 402. In the initial state, there is a sliding distance at both ends of the storage groove 403, which is convenient to provide a sliding space for the stretching or contraction of the corrugated pipe 1 when compensating for the thermal displacement of the pipeline.

[0032] Taking the expansion and elongation of the corrugated pipe 1 as an example, when the corrugated pipe 1 elongates, the inner casing 402 slides in the outer casing 401, so that the overall length between the two outer casings 401 and the inner casing 402 is extended accordingly. However, during the elongation process, the outer casing 401 and the inner casing 402 can always wrap around the outside of the corrugated pipe 1. On the one hand, it limits the elongation direction of the corrugated pipe 1 so that it can expand and contract horizontally. On the other hand, it can protect the outside of the corrugated pipe 1 and improve its collision resistance and high-pressure resistance.

[0033] Although the present utility model has been described above with reference to the embodiments, various improvements can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the features in the embodiments disclosed by the present utility model can be combined with each other in any way, and the exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high pressure resistant pipeline compensator, comprising a bellows (1), characterized in that: Both ends of the bellows (1) are fixedly connected with flanges (2), both ends of the outer wall of the bellows (1) are provided with end covers (3), and a limiting mechanism (4) is provided between the two end covers (3); The limiting mechanism (4) comprises two outer protective tubes (401), an inner protective tube (402) is arranged between the two outer protective tubes (401), the outer side walls at both ends of the inner protective tube (402) are fixedly connected to the limiting ring (5), and the ends of the two outer protective tubes (401) close to each other are provided with a receiving groove (403), the outer protective tube (401) comprises a pressure-resistant outer layer (7) and an inner layer (8), and a positioning bolt (11) is arranged on the outside of the outer protective tube (401).

2. A high pressure resistant pipeline compensator according to claim 1, characterized in that: The two ends of the inner protective tube (402) are respectively located inside the two receiving grooves (403), and the inner protective tube (402) is slidably connected to the inner walls of the receiving grooves (403).

3. A high pressure resistant pipeline compensator according to claim 1, characterized in that: The inner wall of the receiving groove (403) is provided with a limiting groove (6), and the limiting ring (5) is slidably connected to the limiting groove (6) accordingly.

4. The high pressure resistant pipeline compensator according to claim 1, characterized in that: The ends of the pressure-resistant outer layers (7) of the two outer protective tubes (401) that are close to each other are respectively fixedly connected with corresponding magnets (9) and iron rings (10), and the magnets (9) and iron rings (10) are attracted to each other by magnetic force.

5. The high pressure resistant pipeline compensator according to claim 1, characterized in that: The outer casing (401) and the limiting ring (5) are both provided with screw holes (12) corresponding to the positioning bolts (11). The positioning bolts (11) penetrate the outer casing (401) and are threadedly connected to the limiting ring (5).

6. The high pressure resistant pipeline compensator according to claim 1, characterized in that: The compression-resistant outer layer (7) is made of wear-resistant engineering plastic material.

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