Sectional nuclear power low pressure outer cylinder

Abstract

The utility model discloses a segmented nuclear power low pressure outer cylinder, including upper cylinder body and lower cylinder body, and the upper cylinder body bottom and lower cylinder body top are equipped with horizontal connecting flange, and the upper cylinder body and lower cylinder body are fixed through horizontal connecting flange, and the upper cylinder body includes upper motor side and upper steam engine side, and the upper motor side and upper steam engine are equipped with upper vertical flange, and the upper motor side and upper steam engine side are fixed through upper vertical flane, and the lower cylinder body includes lower motor side, intermediate section and lower steam engine side, and the lower motor side and lower steam engine side are equipped with lower connecting flange, and the both sides of intermediate section are equipped with inner connecting plate, the utility model discloses segmented nuclear power low pressure outer cylinder adopts inner connecting plate, horizontal connecting flange, upper connecting flange and lower connecting flange, can be with upper cylinder body and lower cylinder body quick welding assembly into entire outer cylinder, and the structure design is simple, can be quick assembly, and is provided with reinforcing rib and reinforcing rod, can strengthen the strength of upper cylinder body and lower cylinder body, avoids entire outer cylinder deformation, and long service life.

Description

Technical Field

[0001] This utility model relates to outer cylinder assembly technology, specifically a segmented nuclear power low-pressure outer cylinder. Background Technology

[0002] The advent of steam turbines propelled the development of the power industry. The steam turbine industry is a relatively mature market with relatively stable demand. Customers in the target market are increasingly demanding higher standards for manufacturing processes and quality, leading to a gradual increase in the market share of mid-to-high-end products within the target market's demand structure. Domestically, with rapid urbanization, the steam turbine industry's market prospects are even broader. Internationally, with the gradual recovery of the international economic and financial markets and stabilizing demand in Europe and the United States, the international market, especially emerging economies, offers promising development prospects.

[0003] The low-pressure outer cylinder is a crucial component of the steam turbine, comprising an upper cylinder body and a lower cylinder body. The upper cylinder body includes the upper motor side and the upper turbine side of the low-pressure outer cylinder, connected by bolts via vertical flanges on both sides. The lower cylinder body includes the lower motor side, the lower turbine side, and the middle section of the lower cylinder, also connected by bolts via vertical flanges on both sides. The low-pressure outer cylinder is the most structurally complex component in the steam turbine unit, requiring high standards for both appearance and internal quality. Its production is extremely difficult, and it is highly susceptible to deformation. Current technology typically employs welded reinforcing ribs to the outer wall of the cylinder body to increase its strength and prevent deformation. However, simply using reinforcing ribs to improve the strength of the low-pressure outer cylinder is not very effective. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a segmented nuclear power low-pressure outer cylinder with a simple structure, which can be quickly assembled, has high strength, and a long service life.

[0005] To achieve the above technical objectives, this utility model adopts the following technical solution: a segmented nuclear power low-pressure outer cylinder, comprising an upper cylinder body and a lower cylinder body, wherein the upper cylinder body is located above the lower cylinder body, and both the bottom of the upper cylinder body and the top of the lower cylinder body are provided with horizontal connecting flanges. The upper cylinder body and the lower cylinder body are fixed by the horizontal connecting flanges. The upper cylinder body includes an upper motor side and an upper turbine side, and both the upper motor side facing the upper turbine side and the upper turbine side facing the upper motor side are provided with upper vertical flanges. The upper motor side and the upper turbine side are fixed by the upper vertical flanges. The lower cylinder body includes a lower motor side, an intermediate section, and a lower turbine side, wherein the intermediate section is located between the lower motor side and the lower turbine side, and both the lower motor side facing the intermediate section and the lower turbine side facing the intermediate section are provided with lower connecting flanges. Both sides of the intermediate section are provided with inner connecting plates, and the top of the inner connecting plates is also provided with lower connecting flanges. The lower motor side and the lower turbine side are fixedly connected to the intermediate section by the lower connecting flanges.

[0006] Preferably, an outer connecting plate is provided on both sides of the middle section. The outer connecting plate is conical, with the top of the outer connecting plate fixed to the upper motor side and the bottom of the outer connecting plate fixed to the lower motor side.

[0007] Preferably, both the lower connecting flange and the upper connecting flange are provided with several reinforcing ribs.

[0008] Preferably, the lower connecting flange, the upper connecting flange, and the inner connecting plate are all semi-circular rings.

[0009] Preferably, a number of reinforcing rods are provided between the lower connecting flange and the outer connecting plate, and between the upper connecting flange and the outer connecting plate.

[0010] Preferably, the two upper connecting flanges, the two adjacent lower connecting flanges, and the two horizontal connecting flanges are all fixed with bolts, and the lower connecting flanges are welded and fixed to the top of the inner connecting plate.

[0011] Preferably, the middle section is provided with a shaft groove.

[0012] In summary, this utility model achieves the following technical effects:

[0013] This utility model discloses a segmented nuclear power low-pressure outer cylinder, which uses an inner connecting plate, a horizontal connecting flange, an upper connecting flange, and a lower connecting flange. It can quickly weld and assemble the upper cylinder body and the lower cylinder body into the entire outer cylinder. The structure is simple and can be quickly assembled. Moreover, it is equipped with reinforcing ribs and reinforcing rods to enhance the strength of the upper cylinder body and the lower cylinder body, prevent the entire outer cylinder from deforming, and extend its service life. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the segmented low-pressure outer cylinder for nuclear power plants according to this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the segmented low-pressure outer cylinder of the nuclear power plant according to this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the segmented low-pressure outer cylinder of the nuclear power plant according to this utility model;

[0017] Explanation of reference numerals in the accompanying drawings: 11. Upper motor side; 12. Upper turbine side; 13. Upper connecting flange; 21. Lower motor side; 22. Intermediate section; 23. Lower turbine side; 24. Inner connecting plate; 25. Lower connecting flange; 3. Outer connecting plate; 4. Horizontal connecting flange; 5. Reinforcing rod; 6. Reinforcing rib. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] Example 1:

[0025] like Figure 1 As shown in Figure 2, a segmented nuclear power plant low-pressure outer cylinder includes an upper cylinder body and a lower cylinder body. The upper cylinder body is located above the lower cylinder body. Horizontal connecting flanges 4 are provided at the bottom of the upper cylinder body and the top of the lower cylinder body. The upper and lower cylinder bodies are fixed together by the horizontal connecting flanges 4. The upper cylinder body includes an upper motor side 11 and an upper turbine side 12. Upper vertical flanges are provided on both the upper motor side 11 facing the upper turbine side 12 and the upper turbine side 12 facing the upper motor side 11. The upper motor side 11 and the upper turbine side 12 are fixed together by the upper vertical flanges. The lower cylinder body includes a lower motor side 21, an intermediate section 22, and a lower turbine side 23. The intermediate section 22 is located between the lower motor side 21 and the lower turbine side 23. Both the lower motor side 21 facing the intermediate section 22 and the lower turbine side 23 facing the intermediate section 22 are provided with lower connecting flanges 25. Both sides of the intermediate section 22 are provided with inner connecting plates 24, and the top of the inner connecting plates 24 is also provided with lower connecting flanges 25. The lower motor side 21 and the lower turbine side 23 are fixedly connected to the intermediate section 22 through the lower connecting flanges 25.

[0026] The segmented nuclear power low-pressure outer cylinder of this embodiment uses an inner connecting plate 24, a horizontal connecting flange 4, an upper connecting flange 13, and a lower connecting flange 25, which can quickly weld and assemble the upper cylinder body and the lower cylinder body into the whole outer cylinder. The structure design is simple and can be quickly assembled. Moreover, the setting of reinforcing ribs 6 and reinforcing rods 5 can strengthen the strength of the upper cylinder body and the lower cylinder body, avoid deformation of the entire outer cylinder, and have a long service life.

[0027] like Figure 3 As shown, the middle section 22 is provided with external connecting plates 3 on both sides. The external connecting plates 3 are conical. The top of the external connecting plates 3 is fixed to the upper motor side 11, and the bottom of the external connecting plates 3 is fixed to the lower motor side 21.

[0028] Both the lower connecting flange 25 and the upper connecting flange 13 are provided with a number of reinforcing ribs 6; the setting of the reinforcing ribs 6 can improve the strength of the lower connecting flange 25 and the upper connecting flange 13.

[0029] The lower connecting flange 25, the upper connecting flange 13, and the inner connecting plate 24 are all semi-circular rings.

[0030] Several reinforcing rods 5 are provided between the lower connecting flange 25 and the outer connecting plate 3, and between the upper connecting flange 13 and the outer connecting plate 3. The reinforcing rods 5 connect the lower connecting flange 25 and the outer connecting plate 3, and the upper connecting flange 13 and the outer connecting plate 3, thereby improving the strength of the upper and lower cylinder bodies. In conjunction with the lower connecting flange 25 and the upper connecting flange 13 reinforced by reinforcing ribs 6, the strength of the entire cylinder body can be greatly enhanced.

[0031] The two upper connecting flanges 13, the two adjacent lower connecting flanges 25, and the two horizontal connecting flanges 4 are all fixed by bolts. The lower connecting flange 24 is welded and fixed to the top of the inner connecting plate 24.

[0032] The middle section 22 is provided with a shaft groove in the middle; the shaft groove is used to fit the rotor on the rotating shaft.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A segmented nuclear power plant low-pressure outer cylinder, characterized in that, The system includes an upper cylinder body and a lower cylinder body, with the upper cylinder body located above the lower cylinder body. Horizontal connecting flanges are provided at the bottom of the upper cylinder body and the top of the lower cylinder body, and the upper and lower cylinder bodies are fixed together by these horizontal connecting flanges. The upper cylinder body includes an upper motor side and an upper turbine side, with upper vertical flanges provided on both the upper motor side facing the upper turbine side and the upper turbine side facing the upper motor side, and these upper motor side and upper turbine side are fixed together by these upper vertical flanges. The lower cylinder body includes a lower motor side, an intermediate section, and a lower turbine side, with the intermediate section located between the lower motor side and the lower turbine side. Lower connecting flanges are provided on both the lower motor side facing the intermediate section and the lower turbine side facing the intermediate section. Inner connecting plates are provided on both sides of the intermediate section, and lower connecting flanges are also provided on the top of the inner connecting plates. The lower motor side and lower turbine side are fixedly connected to the intermediate section by these lower connecting flanges.

2. A segmented nuclear power plant low-pressure outer cylinder according to claim 1, characterized in that, The middle section is provided with external connecting plates on both sides. The external connecting plates are conical. The top of the external connecting plates is fixed to the upper motor side, and the bottom of the external connecting plates is fixed to the lower motor side.

3. A segmented nuclear power plant low-pressure outer cylinder according to claim 1, characterized in that, Both the lower and upper connecting flanges are provided with several reinforcing ribs.

4. A segmented nuclear power plant low-pressure outer cylinder according to claim 1, characterized in that, The lower connecting flange, upper connecting flange, and inner connecting plate are all semi-circular rings.

5. A segmented nuclear power plant low-pressure outer cylinder according to claim 2, characterized in that, Several reinforcing rods are provided between the lower connecting flange and the outer connecting plate, and between the upper connecting flange and the outer connecting plate.

6. A segmented nuclear power plant low-pressure outer cylinder according to claim 1, characterized in that, The two upper connecting flanges, the two adjacent lower connecting flanges, and the two horizontal connecting flanges are all fixed with bolts. The lower connecting flanges are welded and fixed to the top of the inner connecting plate.

7. A segmented nuclear power plant low-pressure outer cylinder according to claim 1, characterized in that, The middle section is provided with a shaft groove.

Images