Corrugated pipe compensator without dirt accumulation

By setting up an inner tube and a cleaning tube structure in the corrugated pipe compensator, the problem of difficult cleaning of fluid impurities is solved, and effective flushing of impurities and efficient expansion and contraction performance of corrugated pipes is achieved.

CN223178442UActive Publication Date: 2025-08-01JIANGSU YAOYU NEW PIPE CO LTD
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Patent Information

Application Number
CN202422372992.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-28
Publication Date
2025-08-01
Estimated Expiration
2034-09-28

AI Technical Summary

Technical Problem

The fluid impurities in existing bellows compensators are precipitated in the lower groove of the bellows, which is difficult to clean, affecting the expansion and contraction performance of the bellows.

Method used

A corrugated pipe compensator without accumulation is designed. By setting an inner pipe and a cleaning pipe in the outer pipe, the inner pipe is sealed and welded with the left end of the corrugated pipe, and a cleaning pipe and sewage outlet are provided on the outer pipe. The cleaning pipe and sewage outlet are used to flush impurities to avoid fluid contact with the inner wall of the corrugated pipe.

Benefits of technology

It realizes that fluid impurities are difficult to retain, and the precipitates are easy to clean, which improves the service life and expansion performance of the corrugated pipe.

✦ Generated by Eureka AI based on patent content.

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Abstract

A corrugated pipe compensator without dirt accumulation is used for compensating thermal expansion and cold contraction of a pipeline, comprises a corrugated pipe (7), and is characterized in that the corrugated pipe (7) is arranged in an outer pipe (3), a first annular plate (2) is welded to the left end of the outer pipe in a sealed mode, a connecting pipe (1) is welded to the left side of the first annular plate in a sealed mode, a second annular plate (8) is welded to the right end of the outer pipe in a sealed mode, and the right end of the corrugated pipe is welded to the second annular plate (8) in a sealed mode. An inner pipe (12) is inserted into the corrugated pipe, the left end of the corrugated pipe is welded to the left portion of the inner pipe in a sealed mode, the left end of the inner pipe is inserted into a first annular plate (2), a cleaning pipe (5) is arranged on the outer pipe and communicated with an inner cavity of the outer pipe, and a sewage draining outlet (13) is formed in the outer pipe. The corrugated pipe compensator has the advantages that in the corrugated pipe compensator, fluid does not make contact with the inner wall of the corrugated pipe, impurities of the fluid are difficult to remain on the outer wall of the corrugated pipe, and even if a small amount of sediment exists, the sediment can be washed away conveniently.
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Description

Technical Field

[0001] The utility model relates to a corrugated pipe compensator without dirt accumulation, which is used for compensating the thermal expansion and contraction of pipelines. Background Art

[0002] The fluid medium of the existing bellows compensator passes through the inside of the bellows. Since the bellows has corrugated nodes, when the fluid contains impurities, they will settle in the grooves below the nodes. The sediment in the grooves is difficult to clean. When there is too much sediment, it will affect the expansion and contraction of the bellows. Utility Model Content

[0003] In view of the above problems, the present invention proposes a bellows compensator without dirt accumulation, in which impurities in the fluid are difficult to be retained, and even if there is a small amount of sediment, it can be easily cleaned away.

[0004] The technical solution of the present utility model is a kind of bellows compensator without dirt accumulation, which includes a bellows 7, characterized in that the bellows 7 is placed in the outer tube 3, the left end of the outer tube is sealed and welded with a first ring plate 2, the left side of the first ring plate 2 is sealed and welded with a connecting pipe 1, the right end of the outer tube is sealed and welded with a second ring plate 8, the right end of the bellows is sealed and welded to the second ring plate 8, an inner tube 12 is inserted in the bellows, the left end of the bellows is sealed and welded to the left part of the inner tube, the left end of the inner tube is inserted in the first ring plate 2, a cleaning pipe 5 is provided on the outer tube, the cleaning pipe is communicated with the inner cavity of the outer tube, a nut 6 is sealed and screwed on the cleaning pipe, a sewage outlet 13 is provided on the outer tube, and a sealing screw plug 15 is provided on the sewage outlet.

[0005] The beneficial effect is that impurities in the fluid are difficult to remain in the bellows compensator, and even if there is a small amount of sediment, it can be easily flushed away. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a structural diagram of the present utility model.

[0007] The accompanying drawings are marked as follows: 1-connecting pipe, 2-first ring plate, 3-outer pipe, 4-inlet hole, 5-cleaning pipe, 6-nut, 7-bellows, 8-second ring plate, 9-ring body, 10-third ring plate, 11-screw, 12-inner pipe, 13-drain outlet, 14-pipe column, 15-plug. DETAILED DESCRIPTION

[0008] A bellows compensator without dirt accumulation, which comprises a bellows 7. It is characterized in that the bellows 7 is placed in an outer pipe 3. The left end of the outer pipe is sealed and welded with a first ring plate 2. A connecting pipe 1 is sealed and welded to the left side of the first ring plate 2. The right end of the outer pipe is sealed and welded with a second ring plate 8. The right end of the bellows is sealed and welded to the second ring plate 8. An inner pipe 12 is inserted into the bellows. The left end of the bellows is sealed and welded to the left part of the inner pipe. The left end of the inner pipe is inserted into the first ring plate 2. A cleaning pipe 5 is provided on the outer pipe, which is communicated with an inlet hole 4 on the outer pipe wall. A nut 6 is screwed on the cleaning pipe in a sealed manner. A sewage outlet 13 is provided on the outer pipe, and a sewage pipe 14 is sealed and connected to the mouth of the sewage outlet. A plug 15 is screwed on the sewage pipe in a sealed manner.

[0009] The cleaning pipe 5 is located above the outer pipe in the radial direction, and the sewage pipe 14 is located below the outer pipe in the radial direction.

[0010] During installation, the connecting pipe is connected to a cross-section of the pipeline, and the extending end of the inner pipe is connected to another cross-section of the pipeline.

[0011] During use, the nut 6 and the plug 15 are tightened.

[0012] During flushing, a clean water source is connected to the cleaning pipe, and the sewage outlet is opened, and the sediment can be flushed away.

[0013] The characteristics of the bellows compensator without dirt accumulation are that since the inner pipe 12 is provided in the bellows, and the left end of the bellows is sealed and welded to the left part of the inner pipe, the fluid has no contact with the inner wall of the bellows, and there is no impurity precipitation on the inner wall of the bellows; the outer wall of the bellows will contact the fluid (the fluid enters the inner cavity of the outer pipe along the gap between the inner pipe and the first ring plate and contacts the outer wall of the bellows), but there is little precipitation on the outer wall of the bellows, and the sediment on the outer wall of the bellows can be easily flushed.

[0014] A ring body 9 is welded to the right side of the second ring plate 8. A third ring plate 10 is connected to the ring body 9 by bolts 11. The third ring plate 10 is fitted over the inner pipe 12. With the above structure, both ends of the inner pipe can be supported. When the pipeline expands and contracts due to heat, the expansion and contraction of the pipeline may deviate from the axial direction, but the inner pipe can maintain axial movement, avoiding unilateral expansion and contraction of the bellows, and also avoiding friction between the inner pipe and the right end of the bellows, improving the service life of the bellows.

Claims

1. The bellows compensator without dirt accumulation, which comprises a bellows (7), is characterized in that, The corrugated pipe (7) is placed in the outer pipe (3). The left end of the outer pipe is hermetically welded with a first ring plate (2). The left side of the first ring plate is hermetically welded with a connecting pipe (1). The right end of the outer pipe is hermetically welded with a second ring plate (8). The right end of the corrugated pipe is hermetically welded with the second ring plate (8). An inner pipe (12) is inserted into the corrugated pipe. The left end of the corrugated pipe is hermetically welded with the left part of the inner pipe. The left end of the inner pipe is inserted into the first ring plate (2). A cleaning pipe (5) is provided on the outer pipe. The cleaning pipe is communicated with the inner cavity of the outer pipe. A nut (6) is hermetically screwed on the cleaning pipe. A sewage outlet (13) is provided on the outer pipe. A plug (15) is hermetically screwed on the sewage outlet.

2. The non-fouling bellows compensator according to claim 1, wherein A ring body (9) is welded on the right side of the second ring plate (8). A third ring plate (10) is connected to the ring body (9) by bolts (11). The third ring plate (10) is fittedly sleeved on the inner pipe (12).