High-performance stainless steel seamless steel pipe for steam generator
By adding convex strips and annular grooves on the stainless steel seamless steel pipes for steam generators, combined with the circular auxiliary heat exchange sheet and positioning ring with holes in the middle, the problem of insufficient heat exchange capacity of existing stainless steel seamless steel pipes is solved, and more efficient heat exchange performance and stronger adaptability are achieved.
Patent Information
- Application Number
- CN202421342781.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-13
AI Technical Summary
The existing stainless steel seamless steel pipes have poor heat exchange capabilities in the evaporator, and the sleeve structure has problems of gaps and insufficient adaptability.
A high-performance stainless steel seamless steel pipe is designed. A number of convex strips extending along the shaft of the pipe body are arranged on the outer periphery of the pipe body, and multiple sets of annular grooves are arranged at equal distances on the pipe body, supplemented by a circular auxiliary heat exchange sheet and positioning ring with holes in the middle to improve heat exchange capacity and adaptability.
By increasing the contact area between the pipe body and the outside world and the design of the annular groove body, the heat exchange ability of the pipe body is effectively improved; the use of auxiliary heat exchange sheets and positioning rings makes the installation more flexible and efficient, and has stronger applicability, while ensuring corrosion resistance and long life.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to a high-performance stainless steel seamless pipe for a steam generator. Background Art
[0002] Stainless steel seamless pipes are often used as heat exchange pipes in large evaporators. In the prior art, such stainless steel seamless pipes generally require a sleeve to be placed outside the pipe body due to their poor heat exchange capacity. The sleeve is densely covered with heat exchange fins to increase the heat exchange surface area of the stainless steel seamless pipe. However, the above structure has the following shortcomings: a gap is inevitably left between the sleeve and the pipe body, which will lead to a decrease in the heat exchange capacity of the heat exchange pipe; the number of fins on the sleeve and the length of the sleeve cannot be adjusted, and the adaptability is poor. Utility Model Content
[0003] The utility model aims to overcome the deficiencies of the prior art and provide a high-performance seamless stainless steel pipe for a steam generator which has better heat exchange capacity and better adaptability.
[0004] The technical solution of the utility model is: a high-performance seamless stainless steel pipe for a steam generator, comprising a pipe body, the outer periphery of the pipe body is arrayed with a plurality of convex strips extending along the pipe body axis, the pipe body is also provided with a plurality of groups of annular grooves at equal distances, each group of annular grooves is composed of two annular grooves, and each of the annular grooves is composed of grooves located on the corresponding convex strips;
[0005] It also includes a plurality of auxiliary heat exchange fins, each of which is a circular auxiliary heat exchange fin with a hole in the middle, the shape of the hole corresponds to the tube body and each convex strip, and each of the auxiliary heat exchange fins is arranged on each group of corresponding annular groove bodies and is located between two annular groove bodies;
[0006] It also includes a plurality of positioning rings, each of which is clamped in a corresponding annular groove to position the auxiliary heat exchange plate.
[0007] Specifically, the tube body, the convex strips and the insertion end are an integrally formed structure of stainless steel.
[0008] Specifically, the cross section of the convex strip is in the shape of an isosceles trapezoid.
[0009] Optionally, the outer diameter of the auxiliary heat exchange plate is 1.5-2 times the outer diameter of the tube body.
[0010] Furthermore, a plurality of convex rings are respectively provided on the front and back surfaces of the auxiliary heat exchange fins.
[0011] Furthermore, both ends of the tube body are respectively provided with insertion ends, and the insertion ends are used to connect to the collecting pipe, and each of the convex strips extends to the connection between the tube body and the insertion end.
[0012] Furthermore, the positioning ring is an elastic ring body with an opening on one side.
[0013] Furthermore, a reinforcing ring is provided on the inner periphery of the positioning ring, and a side of the reinforcing ring facing the auxiliary heat exchange fin is flush with a side of the positioning ring facing the auxiliary heat exchange fin.
[0014] Furthermore, a circular piece is provided at each end of the opening of the positioning ring.
[0015] Specifically, the lower end of the circular sheet extends to the reinforcement ring.
[0016] The beneficial effects of the utility model are as follows: the convex strips arranged on the outer periphery of the tube body can, on the one hand, strengthen the strength of the tube body to avoid deformation of the tube body, and on the other hand, increase the contact area between the tube body and the outside world, and the annular groove body formed by the grooves on each convex strip can effectively improve the heat exchange capacity of the tube body itself; when the heat exchange capacity of the tube body itself is not enough to meet the performance requirements of the evaporator, different numbers of auxiliary heat exchange fins can be arranged on the tube body according to actual needs, and the auxiliary heat exchange fins on every two adjacent tube bodies can be staggered to compress the space required for the installation of the tube body and the auxiliary heat exchange fins; in addition, the auxiliary heat exchange fins are positioned on the tube body by a positioning ring, which is convenient for installation and disassembly and has stronger applicability; finally, the auxiliary heat exchange fins and the positioning rings are both stainless steel parts, which have the advantages of corrosion resistance, good elasticity and long service life, and the auxiliary heat exchange fins also conduct heat through the positioning ring to ensure heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model;
[0018] Figure 2 It is a cross-sectional view of the utility model;
[0019] Figure 3 It is a structural schematic diagram of the positioning ring of the utility model.
[0020] In the figure: tube body 1, convex strip 2, annular groove body 3, auxiliary heat exchange fin 4, positioning ring 5, convex ring 6, insertion end 7, reinforcement ring 8, circular sheet 9. DETAILED DESCRIPTION
[0021] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.
[0022] Combination Figure 1-3 As shown, a high-performance stainless steel seamless pipe for a steam generator comprises a pipe body 1, wherein the outer periphery of the pipe body 1 is provided with a plurality of convex strips 2 extending along the axis of the pipe body 1, and the pipe body 1 is provided with a plurality of groups of annular grooves 3 at equal distances, wherein each group of annular grooves 3 is composed of two annular grooves 3, and each of the annular grooves 3 is composed of grooves located on the corresponding convex strips 2, so as to avoid affecting the strength of the pipe body 1;
[0023] It also includes a plurality of auxiliary heat exchange fins 4, each of which is a circular auxiliary heat exchange fin 4 with a hole in the middle, the shape of the hole corresponds to the tube body 1 and each convex strip 2, and each of the auxiliary heat exchange fins 4 is arranged on each group of corresponding annular groove bodies 3 and is located between two annular groove bodies 3;
[0024] It also includes a plurality of positioning rings 5 , each of which is clamped in a corresponding annular groove body 3 to position the auxiliary heat exchange fins 4 .
[0025] In the above structure, the convex strips 2 arranged on the outer periphery of the tube body 1 can, on the one hand, strengthen the strength of the tube body 1 to avoid deformation of the tube body 1, and on the other hand, increase the contact area between the tube body 1 and the outside world, and cooperate with the annular groove body 3 formed by the grooves on each convex strip 2 to effectively improve the heat exchange capacity of the tube body 1 itself; when the heat exchange capacity of the tube body 1 itself is not enough to meet the performance requirements of the evaporator, different numbers of auxiliary heat exchange fins 4 can be arranged on the tube body 1 according to actual needs, and the auxiliary heat exchange fins 4 on every two adjacent tube bodies 1 can be staggered to compress the space required for the installation of the tube body 1 and the auxiliary heat exchange fins 4; in addition, the auxiliary heat exchange fins 4 are positioned on the tube body 1 through the positioning ring 5, which is convenient for installation and disassembly and has stronger applicability; finally, the auxiliary heat exchange fins 4 and the positioning ring 5 are both stainless steel parts, which have the advantages of corrosion resistance, good elasticity and long service life. The auxiliary heat exchange fins 4 also conduct heat through the positioning ring 5 to ensure heat exchange efficiency.
[0026] Specifically, the tube body 1, the convex strip 2 and the insertion end 7 are an integrally formed structure of stainless steel.
[0027] In another embodiment, if Figure 2 As shown, the cross-section of the convex strip 2 is in the shape of an isosceles trapezoid, so as to further expand the heat exchange area between the tube body 1 and the outside and facilitate the passage of airflow.
[0028] Optionally, the outer diameter of the auxiliary heat exchange fin 4 is 1.5-2 times the outer diameter of the tube body 1 .
[0029] In another embodiment, if Figure 2 As shown, a plurality of convex rings 6 are respectively provided on the front and back surfaces of the auxiliary heat exchange fins 4 to further increase the surface area of the auxiliary heat exchange fins 4 .
[0030] In another embodiment, if Figure 1 As shown, both ends of the tube body 1 are provided with insertion ends 7 respectively, and the insertion ends 7 are used to connect to the collecting pipe, and each of the convex strips 2 extends to the connection between the tube body 1 and the insertion ends 7.
[0031] In another embodiment, if Figure 3 As shown, the positioning ring 5 is an elastic ring body with an opening on one side so as to be smoothly inserted into the annular groove body 3.
[0032] In another embodiment, in combination Figure 2 and Figure 3 As shown, a reinforcing ring 8 is further provided on the inner periphery of the positioning ring 5, and the side of the reinforcing ring 8 facing the auxiliary heat exchange fin 4 is flush with the side of the positioning ring 5 facing the auxiliary heat exchange fin 4, so that it can be firmly clamped in the annular groove body 3, and the inner side of the positioning ring 5 can be more thoroughly abutted against the auxiliary heat exchange fin 4.
[0033] In another embodiment, if Figure 3 As shown, a circular piece 9 is provided at both ends of the opening of the positioning ring 5, respectively, and the circular piece 9 is convenient for handholding during assembly.
[0034] In another embodiment, if Figure 3 As shown, the lower end of the circular piece 9 extends to the reinforcing ring 8 to avoid causing a gap between the positioning ring 5 and the convex strips 2 .
Claims
1. A high-performance seamless stainless steel pipe for a steam generator, comprising a pipe body (1), characterized in that: The outer periphery of the tube body (1) is provided with a plurality of convex strips (2) extending along the axis of the tube body (1), and the tube body (1) is also provided with a plurality of groups of annular grooves (3) at equal distances, each group of annular grooves (3) is composed of two annular grooves (3), and each of the annular grooves (3) is composed of grooves located on the corresponding convex strips (2); It also comprises a plurality of auxiliary heat exchange fins (4), each of the auxiliary heat exchange fins (4) being a circular auxiliary heat exchange fin (4) with a hole in the middle, the shape of the hole corresponding to the tube body (1) and each convex strip (2), and each of the auxiliary heat exchange fins (4) being arranged on each group of corresponding annular groove bodies (3) and located between two annular groove bodies (3); It also comprises a plurality of positioning rings (5), each positioning ring (5) being clamped in a corresponding annular groove body (3) to position the auxiliary heat exchange plate (4).
2. A high performance seamless stainless steel pipe for steam generator as claimed in claim 1, characterized in that: The tube body (1), the convex strip (2) and the insertion end (7) are an integrally formed structure of stainless steel.
3. A high performance seamless stainless steel pipe for steam generator as claimed in claim 2, characterized in that: The cross section of the convex strip (2) is in the shape of an isosceles trapezoid.
4. A high performance stainless steel seamless pipe for steam generator as claimed in claim 3, characterized in that: The outer diameter of the auxiliary heat exchange fin (4) is 1.5 to 2 times the outer diameter of the tube body (1).
5. A high performance stainless steel seamless pipe for steam generator as claimed in claim 4, characterized in that: A plurality of convex rings (6) are respectively provided on the front and back surfaces of the auxiliary heat exchange fin (4).
6. A high performance seamless stainless steel pipe for steam generator as claimed in claim 5, characterized in that: Both ends of the tube body (1) are also provided with insertion ends (7) respectively, and the insertion ends (7) are used to connect to the collecting pipe, and each of the convex strips (2) extends to the connection between the tube body (1) and the insertion end (7).
7. A high performance seamless stainless steel pipe for steam generator as claimed in claim 6, characterized in that: The positioning ring (5) is an elastic ring body with an opening on one side.
8. The high performance seamless stainless steel pipe for steam generator according to claim 7, characterized in that: The inner circumference of the positioning ring (5) is also provided with a reinforcing ring (8), and the side of the reinforcing ring (8) facing the auxiliary heat exchange fin (4) is flush with the side of the positioning ring (5) facing the auxiliary heat exchange fin (4).
9. A high performance seamless stainless steel pipe for steam generator as claimed in claim 8, characterized in that: A circular piece (9) is also provided at both ends of the opening of the positioning ring (5).
10. The high performance seamless stainless steel pipe for steam generator according to claim 9, characterized in that: The lower end of the circular piece (9) extends to the reinforcement ring (8).