Novel steam generator with supporting structure

Abstract

The utility model relates to a novel steam generator with a supporting structure, and belongs to the technical field of steam generators. Comprising two tube plates, a heat exchange tube and a supporting cylinder, the two tube plates are arranged at the two ends of the supporting cylinder, the heat exchange tube is arranged in the supporting cylinder, at least one set of latticed first supporting rings are formed by intersecting first vertical plates and first transverse plates, and at least one set of latticed second supporting rings are formed by intersecting second vertical plates and second transverse plates. The first supporting ring and the second supporting ring are arranged in the supporting cylinder and are arranged at intervals in the axial direction of the supporting cylinder, grids formed by the first supporting ring and the second supporting ring are arranged in a staggered mode, and the heat exchange pipes are arranged in the first supporting ring and the second supporting ring; the pull rod is used for connecting and fixing the tube plate, the first supporting ring and the second supporting ring; and the stop block is arranged on the inner wall of the supporting cylinder and used for fixing the pull rod and the supporting cylinder. Vibration of the heat exchange tube is reduced, abrasion and fatigue fracture risks caused by vibration of the heat exchange tube are reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to a novel support structure steam generator, belonging to the technical field of steam generators. Background Technology

[0002] A steam generator is a common heat exchange device, primarily used to transfer heat from a high-temperature fluid to water on the other side, causing it to vaporize and produce steam. Its core structure consists of multiple parallel tubes, with a high-temperature fluid flowing inside the tubes and heated water flowing inside the shell, exchanging heat through the tube walls. However, the process of water vaporization to produce steam can easily trigger two-phase flow-induced vibrations, leading to wear, fatigue, and even breakage of the heat exchange tubes, severely impacting the service life and operational stability of the steam generator. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of support structure steam generator that reduces the vibration of the heat exchange tubes, reduces the risk of wear and fatigue fracture of the heat exchange tubes caused by vibration, and extends the service life of the equipment.

[0004] This utility model discloses a novel supported structure steam generator, comprising two tube sheets, heat exchange tubes, and a support cylinder. The two tube sheets are positioned at both ends of the support cylinder, and the heat exchange tubes are placed inside the support cylinder.

[0005] At least one set of grid-shaped first support rings formed by the intersection of a first vertical plate and a first horizontal plate, and at least one set of grid-shaped second support rings formed by the intersection of a second vertical plate and a second horizontal plate. The first support rings and the second support rings are placed inside the support cylinder and are arranged at intervals along the axial direction of the support cylinder. The grids formed by the first support rings and the second support rings are staggered. The heat exchange tubes are placed in the first support rings and the second support rings.

[0006] Tie rods are used to connect and fix the tube sheet, the first support ring, and the second support ring.

[0007] The stop block, placed on the inner wall of the support cylinder, is used to fix the tie rod to the support cylinder.

[0008] The first vertical plate and the first horizontal plate form a wedge-shaped flow guide structure at the front end facing the medium flow direction. The wedge-shaped flow guide structure can smoothly guide the fluid flow, reduce flow resistance, disperse fluid impact force, reduce vibration risk, and improve the service life of the steam generator.

[0009] The second vertical plate and the second horizontal plate form a wedge-shaped flow guide structure at the front end facing the medium flow direction. The wedge-shaped flow guide structure can smoothly guide the fluid flow, reduce flow resistance, disperse fluid impact force, reduce vibration risk, and improve the service life of the steam generator.

[0010] The first vertical plate, first horizontal plate, second vertical plate, and second horizontal plate are all made of stainless steel. Stainless steel has excellent corrosion resistance and remains stable under various chemical media and environmental conditions. This characteristic allows the heat exchanger to maintain long-term stable operation when handling corrosive fluids, reducing equipment damage and maintenance costs caused by corrosion.

[0011] The first vertical plate, the first horizontal plate, and the support cylinder are welded together, as are the second vertical plate, the second horizontal plate, and the support cylinder. This welding connection ensures a secure and reliable connection between the first vertical plate, the first horizontal plate, the second vertical plate, the second horizontal plate, and the support cylinder. This robust connection effectively prevents loosening or displacement during fluid impact or equipment operation, thereby improving the overall stability of the structure.

[0012] The tie rod and the second support ring are fixed together by a nut. This nut connection facilitates disassembly, making maintenance or component replacement easier. This design allows for easy removal of the tie rod and the second support ring without damaging the components, facilitating inspection, cleaning, or replacement.

[0013] Each heat exchange tube is surrounded and secured with four damping rods. These damping rods effectively absorb the vibration energy generated during operation, reducing the vibration amplitude. This vibration reduction significantly lowers the risk of fatigue fracture caused by vibration. Furthermore, the even distribution of the four damping rods around the heat exchange tubes disperses the vibration energy, preventing excessive localized vibration and further improving the stability of the heat exchange tubes.

[0014] The shock absorber rod is made of rubber. Rubber has good wear resistance and can resist fluid impact and mechanical wear during long-term operation. This wear resistance allows the rubber shock absorber rod to maintain stable performance under high flow rate and high pressure conditions, reducing the decrease in shock absorption effect caused by wear.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The mesh structure of the first and second support rings provides multi-point support for the heat exchange tubes within the support cylinder, effectively reducing vibration and displacement caused by fluid impact or thermal expansion during operation. Tie rods connect and fix the tube sheet, first support ring, and second support ring into a unified structure, enhancing the overall structural stability of the heat exchanger. Baffles placed on the inner wall of the support cylinder fix the tie rods to the cylinder, further strengthening the structure and ensuring stability under high pressure and high flow rate conditions. The multi-point support and staggered mesh design effectively reduce heat exchange tube vibration, lowering the risk of wear and fatigue fracture due to vibration, and extending the equipment's service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of this utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the sectional structure of the middle AA section;

[0019] Figure 3 yes Figure 1 Schematic diagram of the BB section;

[0020] Figure 4 This is a schematic diagram of the overlapping structure of the first and second support rings;

[0021] Figure 5 This is a schematic diagram of a wedge-shaped flow guide structure.

[0022] In the diagram: 1. Tube sheet; 2. Heat exchange tube; 3. First support ring; 301. First horizontal plate; 302. First vertical plate; 4. Second support ring; 401. Second horizontal plate; 402. Second vertical plate; 5. Tie rod; 6. Nut; 7. Support cylinder; 8. Stop block; 9. Vibration damping rod. Detailed Implementation

[0023] The present invention will be further described below with reference to embodiments:

[0024] Example 1

[0025] like Figures 1-5 As shown, the present invention discloses a novel support structure steam generator, comprising two tube sheets 1, heat exchange tubes 2, and a support cylinder 7. The two tube sheets 1 are placed at both ends of the support cylinder 7, and the heat exchange tubes 2 are placed inside the support cylinder 7. It also includes two sets of grid-shaped first support rings 3 formed by the intersection of a first vertical plate 302 and a first horizontal plate 301, and two sets of grid-shaped second support rings 4 formed by the intersection of a second vertical plate 402 and a second horizontal plate 401. The first support rings 3 and the second support rings 4 are placed inside the support cylinder 7 and are arranged at intervals along the axial direction of the support cylinder 7. The grids formed by the first support rings 3 and the second support rings 4 are staggered. The heat exchange tubes 2 are placed in the first support rings 3 and the second support rings 4.

[0026] Tie rod 5 is used to connect and fix tube sheet 1, first support ring 3 and second support ring 4; tie rod 5 is evenly distributed along the circumference, and its two ends pass through tube sheet 1, first support ring 3 and second support ring 4 respectively and are locked to nut 6.

[0027] The stop block 8 is placed on the inner wall of the support cylinder 7 and is used to fix the tie rod 5 to the support cylinder 7. The stop blocks 8 are welded to the inner wall of the support cylinder 7 and are arranged at intervals along the circumference.

[0028] The first vertical plate 302 and the first horizontal plate 301 form a wedge-shaped flow guide structure facing the front end of the medium flow direction, such as... Figure 5 As shown.

[0029] The second vertical plate 402 and the second horizontal plate 401 form a wedge-shaped flow guide structure directly facing the front end of the medium flow direction, such as... Figure 5 As shown.

[0030] The first vertical plate 302, the first horizontal plate 301, the second vertical plate 402, and the second horizontal plate 401 are all made of stainless steel.

[0031] The first vertical plate 302, the first horizontal plate 301, and the support cylinder 7 are welded together, and the second vertical plate 402, the second horizontal plate 401, and the support cylinder 7 are welded together.

[0032] Each heat exchange tube 2 is surrounded by four damping rods 9 for filling and fixing. The damping rods 9 are made of rubber.

[0033] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.

Claims

1. A novel supported structure steam generator, comprising two tube sheets (1), heat exchange tubes (2), and a support cylinder (7), wherein the two tube sheets (1) are placed at both ends of the support cylinder (7), and the heat exchange tubes (2) are placed inside the support cylinder (7), characterized in that, Also includes At least one set of grid-shaped first support rings (3) formed by the intersection of the first vertical plate (302) and the first horizontal plate (301), and at least one set of grid-shaped second support rings (4) formed by the intersection of the second vertical plate (402) and the second horizontal plate (401). The first support rings (3) and the second support rings (4) are placed inside the support cylinder (7) and are arranged at intervals along the axial direction of the support cylinder (7). The grids formed by the first support rings (3) and the second support rings (4) are staggered. The heat exchange tube (2) is placed in the first support rings (3) and the second support rings (4). Tie rod (5) is used to connect and fix tube sheet (1), first support ring (3) and second support ring (4); The stop block (8) is placed on the inner wall of the support cylinder (7) to fix the pull rod (5) to the support cylinder (7).

2. The novel support structure steam generator according to claim 1, characterized in that, The first vertical plate (302) and the first horizontal plate (301) form a wedge-shaped flow guide structure facing the front end of the medium flow direction.

3. The novel support structure steam generator according to claim 2, characterized in that, The second vertical plate (402) and the second horizontal plate (401) form a wedge-shaped flow guide structure facing the front end of the medium flow direction.

4. The novel support structure steam generator according to claim 3, characterized in that, The first vertical plate (302), the first horizontal plate (301), the second vertical plate (402), and the second horizontal plate (401) are all made of stainless steel.

5. The novel support structure steam generator according to claim 4, characterized in that, The first vertical plate (302), the first horizontal plate (301) and the support cylinder (7) are welded together, and the second vertical plate (402), the second horizontal plate (401) and the support cylinder (7) are welded together.

6. The novel support structure steam generator according to claim 5, characterized in that, The tie rod (5) and the second support ring (4) are connected and fixed by a nut (6).

7. The novel support structure steam generator according to any one of claims 1-6, characterized in that, Four damping rods (9) are installed around each heat exchange tube (2) to fill and fix it.

8. The novel support structure steam generator according to claim 7, characterized in that, The shock absorber (9) is made of rubber.

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