Stainless steel corrugated protective sleeve installation clamp spring beating method

By embedding a retaining ring into the stainless steel corrugated sleeve as a force support point for corrugation, the problem of removing the sleeve during nut installation is solved, achieving a tight connection and aesthetic effect between the nut and the sleeve.

CN121756060APending Publication Date: 2026-03-31汪鹏
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-11-09
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

The existing stainless steel corrugated sheathed pipe requires the sheath to be removed when installing nuts, resulting in poor aesthetics and loss of protection and insulation functions.

Method used

The process involves removing only 3-4 corrugations from one end of the stainless steel corrugated sleeve. A sleeve and a jacking tube are used to embed a retaining ring into the nut. The retaining ring is secured in the corrugated groove as a support point for corrugating, thus avoiding damage to the corrugated pipe. The retaining ring is also used to ensure a tight connection between the retaining ring and the nut.

Benefits of technology

This design achieves a tight connection between the nut and the sheath, preserving the protective and heat-insulating functions of the sheath to the greatest extent while maintaining an aesthetically pleasing appearance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a method for mounting a clamp spring for a stainless steel corrugated protective sleeve to beat waves, in particular to a method for mounting a nut (3) joint when a stainless steel corrugated pipe (1) is used. In order to not dismantle the protective sleeves (2) and to be attractive, only the 3-4 corrugated protective sleeves (2) at one end of the pipe head of the stainless steel corrugated protective sleeve are dismantled, the nut (3) is sleeved in, then the round lug-free open clamp spring (4) is embedded into the nut (3) by utilizing the sleeve (5) and the jacking pipe (6), and the clamp spring (4) is clamped in the corrugated grooves of the stainless steel corrugated pipe (1), so that the nut (3) can be limited, and the stainless steel corrugated pipe (1) can be assembled and disassembled. Meanwhile, the nut (3) is used as a stress supporting point for extruding the corrugations during corrugation, so that the stainless steel corrugated pipe (1) cannot be damaged during corrugation, meanwhile, the nut (3) is tightly connected with the sheath (2), the effect is attractive, and the sheath (2) is reserved to the maximum extent.
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Description

Technical Field

[0001] This invention relates to a method for installing snap rings and corrugations on stainless steel corrugated pipes, and to a method for installing nut joints in the use of stainless steel corrugated pipes. Background Technology

[0002] The existing stainless steel corrugated sheathed pipe has an outer sheath layer and an inner stainless steel corrugated pipe. Using the traditional method of corrugating and installing nuts, a portion of the sheath must be removed, which is unsightly, and the exposed portion loses the protective, insulating, and heat-insulating functions of the sheath. (Note: Corrugating involves using a punch to hammer and compress the corrugated wall of the original stainless steel corrugated pipe, forming a flattened circular step. One side prevents the nut from loosening, and the other side is used to install a rubber ring for sealing.) Summary of the Invention

[0003] The technical solution adopted by this invention to solve the problem is as follows: only remove the 3-4 corrugations of the stainless steel corrugated sleeve at one end of the tube head, insert a nut, and then use a sleeve and a top tube to embed a circular earless open retaining spring into the nut. The outer diameter of the retaining spring is larger than the inner diameter of the step of the nut, and the inner diameter of the retaining spring is smaller than the outer diameter of the stainless steel corrugated tube. The retaining spring is clamped in the corrugated groove of the stainless steel corrugated tube, which can limit the nut and at the same time serve as a force support point when the corrugations are squeezed during corrugation. In this way, the stainless steel corrugated tube will not be damaged during corrugation, and the nut and the sleeve are tightly connected, resulting in an aesthetically pleasing effect and preserving the sleeve to the greatest extent.

[0004] The aforementioned sheath can be made of: plastic materials, composite materials, or thermal insulation materials.

[0005] The aforementioned sleeve is a thin-walled metal tube with an inner diameter slightly larger than the outer diameter of the stainless steel corrugated pipe and a constricted end.

[0006] The aforementioned jacking pipe is a metal pipe with an inner diameter larger than that of the sleeve and an outer diameter smaller than the inner diameter of the nut thread.

[0007] The aforementioned retaining ring is a circular, open-ended retaining ring without lugs. The outer diameter of the retaining ring is larger than the inner diameter of the step of the nut, and the inner diameter of the retaining ring is smaller than the outer diameter of the stainless steel bellows. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0009] Figure 1 This is a cross-sectional view of the stainless steel corrugated sheath and nut of the present invention.

[0010] In the picture: 1. Stainless steel corrugated pipe, 2. Sheath, 3. Nut.

[0011] Figure 2 This is a cross-sectional view of the combination of the snap ring, sleeve, and jacking pipe of the present invention;

[0012] In the diagram: 4. Snap ring, 5. Sleeve, 6. Jacking pipe.

[0013] Figure 3 This is a schematic diagram illustrating the application process of the present invention;

[0014] In the diagram: 1. Stainless steel corrugated pipe, 2. Sheath, 3. Nut, 4. Snap ring, 5. Sleeve, 6. Jacking pipe.

[0015] Figure 4 This is a schematic diagram illustrating the application process of the present invention;

[0016] In the diagram: 1. Stainless steel corrugated pipe, 2. Sheath, 3. Nut, 4. Snap ring, 5. Sleeve, 6. Jacking pipe.

[0017] Figure 5 This is a schematic diagram illustrating the application process of the present invention;

[0018] In the picture: 1. Stainless steel corrugated pipe, 2. Sheath, 3. Nut, 4. Snap ring, 5. Sleeve, 6. Top pipe, 7. Corrugated punch, 8. Flat gasket. Detailed Implementation

[0019] Take a section of stainless steel corrugated pipe (1), remove part of the sheath (2) from one end, leaving 3-4 corrugations, insert the nut (3), put the snap ring (4) into the constricted end of the sleeve (5), put the top tube (6) into the sleeve (5), push the snap ring (4) forward, align the sleeve (5) with the stainless steel corrugated pipe (1), insert it to the bottom of the nut (3), continue to push the top tube (6), push the snap ring (4) to the bottom, keep the position of the top tube (6), pull out the sleeve (5), the snap ring (4) retracts after losing support and gets stuck in the groove on the outside of the stainless steel corrugated pipe (1), take out the top tube (6), use the corrugating punch (7) to hammer the reserved corrugations, the reserved corrugations are squeezed into a flat gasket (8) under the support of the snap ring (4) and the nut (3).

Claims

1. A small amount of sheath is removed from the stainless steel corrugated sheath pipe, and the clamping spring is installed into the nut with the help of the sleeve and the pipe jacking, and clamped in the corrugated groove of the stainless steel corrugated pipe.

2. The clamping spring embedded in the nut serves as the limiting and beating support of the nut.