Stainless steel corrugated pipe

Abstract

The utility model relates to a stainless steel corrugated pipe, and relates to the technical field of fluid conduits, the stainless steel corrugated pipe is used for being placed between two devices to guide fluid, the stainless steel corrugated pipe comprises a plurality of straight pipe sections and a plurality of corrugated sections which are integrally formed, the straight pipe sections and the corrugated sections are alternately arranged together, and the interiors of the corrugated sections and the straight pipe sections are communicated. The multiple corrugated sections are each of a spiral structure in the extending direction of the pipe body, and the thickness of the corrugated sections is consistent with that of the straight pipe sections. When flowing through the corrugated section of the threaded pipe, fluid can be affected by the spiral structure of the corrugated section to rotate along the pipe wall, in the process, the fluid can carry out impurities deposited at the bottom of the corrugated section of the corrugated pipe under the action of centrifugal force, and the effect of purifying the environment in the pipe is achieved.

Description

Technical Field

[0001] This application relates to the field of fluid conduit technology, and in particular to a stainless steel corrugated pipe. Background Technology

[0002] A metal bellows is a type of pipe with a regular wave-like shape. Commonly used metal bellows include those made of carbon steel and stainless steel. Among them, stainless steel bellows, due to their high bending fatigue strength, corrosion resistance, and good weldability, can be used as measuring, sealing, connecting, and compensating elements in corrosive media. In plumbing equipment, bellows serve to guide fluid flow.

[0003] However, existing metal bellows are mostly manufactured using extrusion, resulting in uneven thickness distribution of the corrugated sections. Furthermore, the corrugations in existing bellows are often arranged in parallel rings. When fluid flows through the corrugated sections, the different pipe diameters cause changes in fluid velocity, obstructing the flow and hindering the removal of impurities from the pipe body. Impurities also settle at the corrugated locations, reducing the bellows' effectiveness in removing impurities and, to some extent, interfering with fluid velocity. Utility Model Content

[0004] In order to improve the structure of the bellows so that the fluid can remove impurities inside the bellows during the flow process, this application provides a stainless steel bellows.

[0005] The stainless steel corrugated pipe provided in this application adopts the following technical solution:

[0006] A stainless steel corrugated pipe is used for fluid guidance between two devices. It includes a plurality of integrally formed straight pipe sections and a plurality of corrugated sections. The plurality of straight pipe sections and the plurality of corrugated sections are alternately arranged together, and the interiors of the plurality of corrugated sections and the plurality of straight pipe sections are all connected. The plurality of corrugated sections have a spiral structure along the extension direction of the pipe body, and the thickness of the corrugated sections is the same as the thickness of the straight pipe sections.

[0007] Optionally, each corrugated pipe includes at least 8 corrugated sections and 9 straight pipe sections.

[0008] Optionally, each of the corrugated segments has at least 15 convex waves, and some of the convex waves are straight.

[0009] Optionally, a concave wave is integrally provided between two adjacent convex waves of several corrugated segments, and the side of the concave wave near the inside of the tube is tangent to the side of the convex wave near the inside of the tube.

[0010] Optionally, each bellows includes an integrally connected head, middle section and tail, and the middle section has at least seven segments connected sequentially.

[0011] Optionally, the bellows undergoes solution treatment.

[0012] Optionally, the corrugated pipe can be made of stainless steel.

[0013] Optionally, the corrugated segment can be bent.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. The corrugated waves on the corrugated pipe have a spiral structure, which has a better effect on promoting the internal fluid flow compared to corrugated pipe fittings with side-by-side corrugated waves in a ring structure. In addition, the fluid can remove impurities at the bottom of the corrugated section of the pipe fitting during the flow of the fluid.

[0016] 2. In this application, the wall thickness of the corrugated section and the straight section of the corrugated pipe are the same, and a concave wave is integrally connected between two adjacent convex waves, so that the fluid will not be obstructed when passing through the corrugated section, thereby reducing the sound emitted when the fluid flows inside the corrugated pipe.

[0017] 3. The corrugated pipe is made of 304 or 316L steel, which has stronger pressure resistance than the flexible corrugated pipe commonly used in plumbing equipment. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of a stainless steel corrugated pipe according to this application.

[0019] Figure 2 This is a cross-sectional view of a stainless steel corrugated pipe according to this application.

[0020] Figure 3 yes Figure 1 Cross-sectional view at point AA.

[0021] Figure 4 yes Figure 3 A magnified view of point A in the middle.

[0022] Explanation of reference numerals in the attached diagram: 1. Corrugated section; 11. Convex wave; 12. Concave wave; 2. Straight pipe section. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0024] This application discloses a stainless steel corrugated pipe.

[0025] Reference Figure 1A stainless steel corrugated pipe is disclosed for placement between two devices to facilitate fluid flow. The corrugated pipe comprises several integrally formed and internally interconnected corrugated sections 1 and several straight pipe sections 2, which are alternately distributed and coaxial. The corrugated sections 1 have a helical structure along the pipe body's extension direction, allowing fluid to flow more smoothly without reducing velocity. It should be emphasized that the helical structure of the corrugated sections 1 described in this application can be left-handed or right-handed; the helical structure shown in the accompanying drawings is only for clearer illustration of the technical features and is not intended to limit the scope of protection of this application.

[0026] In this application, the preferred length of the corrugated pipe is 4000 mm, which enables long-distance fluid transmission. The corrugated pipe is flexible and includes at least 8 corrugated sections 1 and 9 straight pipe sections 2 to ensure that it can be bent as needed during fluid transmission to adapt to different installation requirements.

[0027] Reference Figure 1 and Figure 2 Because the bellows has a spiral structure, it also has the function of carrying out the impurities at the bottom of the bellows section 1 inside the bellows, which can purify the environment inside the bellows and prevent impurities from being mixed into the fluid flowing through the bellows later.

[0028] Preferably, each corrugated segment 1 has twenty straight convex waves 11, so that the corrugated pipe can have a larger bending radius and avoid local cracking due to the bending radius being too small when the corrugated pipe is bent.

[0029] Reference Figure 3 and Figure 4 Furthermore, the corrugated section 1 and the straight pipe section 2 have the same thickness, and a concave wave 12 is integrally provided between two adjacent convex waves 11 on the same corrugated section 1. The concave wave 12 has an arc-shaped cross-section, and one side of the concave wave 12 inside the pipe is tangent to the one side of the convex wave 11 inside the pipe, making the fluid flow smoother. Moreover, since the inner wall of the corrugated section 1 inside the corrugated pipe has a smooth connection structure, the noise when the fluid flows through the corrugated section 1 can be reduced, achieving a quieting effect.

[0030] Preferably, each bellows includes a head, a middle section and a tail section that are integrally connected in sequence, wherein there are seven middle sections that are integrally connected together, and the length of the head is less than the length of the tail section.

[0031] It is worth mentioning that the corrugated pipe of this application has passed a pressure resistance test of 2.5MPa and an airtightness test of 0.6MPa during the manufacturing process to ensure that the corrugated pipe has stable pressure resistance and airtightness during fluid transmission, preventing accidents. Furthermore, the material of the corrugated pipe undergoes solution treatment during manufacturing, thus possessing high toughness and corrosion resistance, making it suitable for a wider range of fluids and installation environments, thereby improving the economic value and applicability of the corrugated pipe.

[0032] Preferably, the material used for the corrugated pipe in this application is stainless steel, specifically 304 steel or 316L steel. 304 steel and 316L steel have good corrosion resistance and low cost, which increases the economic applicability of the corrugated pipe and reduces the manufacturing cost of the corrugated pipe.

[0033] The implementation principle of a stainless steel corrugated pipe in this application embodiment is as follows:

[0034] By incorporating several corrugated sections 1, the fluid inside the pipe fitting flows tightly against the inner wall of the corrugated section 1 under the action of centrifugal force, carrying away solid impurities located at the bottom of the corrugated section 1 and thus purifying the internal environment of the pipe fitting. Simultaneously, the smooth inner wall of the corrugated section 1 also reduces noise generated during fluid flow. Furthermore, the corrugated pipe can be bent to adapt to installation requirements in different environments.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stainless steel corrugated pipe for placement between two devices for fluid guidance, comprising a plurality of integrally formed straight pipe sections (2) and a plurality of corrugated sections (1), wherein the plurality of straight pipe sections (2) and the plurality of corrugated sections (1) are alternately arranged together, and the interiors of the plurality of corrugated sections (1) and the plurality of straight pipe sections (2) are all interconnected, characterized in that: Several of the corrugated sections (1) are spiral structures along the extension direction of the pipe body, and the thickness of the corrugated section (1) is the same as the thickness of the straight pipe section (2).

2. The stainless steel corrugated pipe according to claim 1, characterized in that: Each bellows comprises at least 8 of the bellows sections (1) and 9 of the straight pipe sections (2).

3. A stainless steel corrugated pipe according to claim 2, characterized in that: Each of the wavy segments (1) has at least 15 convex waves (11), and some of the convex waves (11) are straight.

4. A stainless steel corrugated pipe according to claim 3, characterized in that: A concave wave (12) is integrally provided between two adjacent convex waves (11) of several corrugated segments (1), and the side of the concave wave (12) near the inside of the tube body is tangent to the side of the convex wave (11) near the inside of the tube body.

5. A stainless steel corrugated pipe according to claim 4, characterized in that: Each bellows includes an integrally connected head, middle section and tail, and the middle section has at least seven segments connected sequentially.

6. A stainless steel corrugated pipe according to claim 5, characterized in that: The bellows undergoes solution treatment.

7. A stainless steel corrugated pipe according to claim 6, characterized in that: The corrugated pipe is made of stainless steel.

8. A stainless steel corrugated pipe according to claim 7, characterized in that: The corrugated segment (1) can be bent.

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