Cylinder structure

Abstract

The utility model relates to a kind of cylinder body structures, the cylinder body structure includes: upper cylinder body and lower cylinder body;First connecting piece, and it is connected to the side of the upper cylinder body and the lower cylinder body, the first connecting piece is equipped with anti-rotation structure;Second connecting piece, with the other side of the upper cylinder body and the lower cylinder body fastening connection.By anti-rotation structure realizes the automatic accurate centering and anti-rotation of the upper cylinder body and the lower cylinder body joint surface, ensure the sealing property and security under high temperature and high pressure condition.By the other side of second connecting piece cooperation connection upper cylinder body and lower cylinder body, improve overall assembly efficiency and reliability, it is convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of mechanical structure technology, and in particular to a cylinder structure. Background Technology

[0002] As a core piece of equipment in thermal power generation, nuclear power generation, and other fields, the operating efficiency and reliability of steam turbines directly affect the performance of the entire power generation system. Steam turbines typically consist of high-pressure, intermediate-pressure, and low-pressure cylinders, and the assembly quality between these cylinders is crucial to the overall performance of the turbine. The cylinder assembly process is a key step in the manufacturing and assembly of steam turbines, aiming to ensure precise alignment and sealing of each cylinder under high-temperature and high-pressure conditions to prevent steam leakage, excessive vibration, and other problems. Currently, the traditional method for assembling steam turbine cylinders mainly uses bolts with heating pre-tightening to join the upper and lower cylinders together. However, this method is difficult to operate, requiring specialized heating equipment and operational techniques to ensure precise control of the pre-tightening force; otherwise, operational malfunctions are likely to occur. Summary of the Invention

[0003] Therefore, it is necessary to provide a cylinder block structure that is highly efficient in assembly, has a low failure rate, and is highly adaptable, in order to address the problem of the difficulty in assembling the turbine cylinder block.

[0004] This utility model provides a cylinder block structure, including:

[0005] Upper cylinder block and lower cylinder block;

[0006] A first connecting member is inserted through and connected to one side of the upper cylinder and the lower cylinder, and the first connecting member is provided with an anti-rotation structure;

[0007] The second connecting piece is fastened to the other side of the upper cylinder and the lower cylinder.

[0008] In one embodiment, a recess is provided on the mating surface of the lower cylinder, and the recess is connected in conjunction with the anti-rotation structure of the first connector.

[0009] In one embodiment, the recess is a square recess, and the anti-rotation structure is a square protrusion disposed on the body of the first connector, the protrusion being disposed within the recess.

[0010] In one embodiment, the cylinder structure further includes at least two fasteners that fasten the two ends of the first connector to the upper cylinder and the lower cylinder, respectively.

[0011] In one embodiment, the cylinder structure further includes a gasket 6 disposed between the fastener and the upper and lower cylinders.

[0012] In one embodiment, the fastener is a nut, and the first connector is a stud or a double-ended bolt.

[0013] In one embodiment, the second connector is a connecting pin that passes through the upper cylinder and connects to the lower cylinder.

[0014] The aforementioned cylinder block structure connects one side of the upper and lower cylinder blocks via a first connecting member, and a second connecting member securely connects the other side of the upper and lower cylinder blocks. An anti-rotation structure is provided on the first connecting member, which ensures automatic and precise alignment and prevents rotation of the mating surfaces of the upper and lower cylinder blocks, guaranteeing sealing and safety under high temperature and high pressure conditions. The second connecting member further connects the other side of the upper and lower cylinder blocks, improving overall assembly efficiency and reliability, and facilitating operation. Attached Figure Description

[0015] Figure 1 This is a cross-sectional schematic diagram of the cylinder block structure in one embodiment;

[0016] Figure 2 This is a partially enlarged cross-sectional view of the cylinder block structure in one embodiment;

[0017] Figure 3 This is a partial schematic diagram of the mating surface of the lower cylinder block in one embodiment of the cylinder block structure;

[0018] Figure 4 This is a schematic diagram of the first connecting member of the cylinder block structure in one embodiment;

[0019] Figure 5 This is a schematic diagram of the second connecting member of the cylinder block structure in one embodiment. Attached image description:

[0021] 1. Upper cylinder block; 2. Lower cylinder block; 3. First connecting piece; 4. Second connecting piece; 5. Fastener; 6. Gasket; 7. Recess. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] 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.

[0024] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] 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.

[0027] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] See Figures 1-5 This utility model provides a cylinder structure, including: an upper cylinder 1 and a lower cylinder 2; a first connecting member 3, which passes through and connects to one side of the upper cylinder 1 and the lower cylinder 2, and the first connecting member 3 is provided with an anti-rotation structure; and a second connecting member 4, which is fastened to the other side of the upper cylinder 1 and the lower cylinder 2. In this cylinder structure, the first connecting member 3 connects one side of the upper cylinder 1 and the lower cylinder 2, and the second connecting member 4 is fastened to the other side of the upper cylinder 1 and the lower cylinder 2. The anti-rotation structure on the first connecting member 3 achieves automatic and precise alignment and anti-rotation of the mating surfaces of the upper cylinder 1 and the lower cylinder 2, ensuring sealing and safety under high temperature and high pressure conditions. The second connecting member 4 connects the other side of the upper cylinder 1 and the lower cylinder 2, improving overall assembly efficiency and reliability, and facilitating operation.

[0029] like Figures 1-3 As shown, in one embodiment, a recessed platform 7 is provided on the mating surface of the lower cylinder 2, and the recessed platform 7 is connected to the anti-rotation structure of the first connecting member 3. The interlocking of the recessed platform 7 and the anti-rotation structure restricts the circumferential rotation of the connecting member, preventing misalignment of the mating surface. This design ensures that the cylinder maintains alignment accuracy under high-temperature expansion conditions, avoiding the risk of steam leakage.

[0030] In one embodiment, the recess 7 is a square recess 7, and the anti-rotation structure is a square protrusion provided on the body of the first connector 3. The protrusion is provided in the recess 7 to avoid deviation of the mating surface between the upper cylinder 1 and the lower cylinder 2.

[0031] In one embodiment, the cylinder structure further includes at least two fasteners 5, which fasten the two ends of the first connecting member 3 to the upper cylinder 1 and the lower cylinder 2 respectively. By adding fasteners 5 to both ends of the first connecting member 3, the upper cylinder 1 and the lower cylinder 2 are locked together.

[0032] In one embodiment, the cylinder structure further includes a gasket 6, which is disposed between the fastener 5 and the upper cylinder 1 and the lower cylinder 2. The elastic deformation of the gasket 6 compensates for the difference in thermal expansion, ensuring connection stability.

[0033] In one embodiment, the fastener 5 is a nut, and the first connector 3 is a stud or a double-ended bolt.

[0034] In one embodiment, the second connector 4 is a connecting pin that passes through the upper cylinder body 1 and connects to the lower cylinder body 2. The connecting pin enables "positioning before tightening," facilitating installation and disassembly.

[0035] Optionally, the pin hole of the lower cylinder 2 is a blind hole machined on the split surface, and the pin hole of the upper cylinder 1 is a through hole. During installation, the connecting pin and the first connecting piece 3 are connected to the lower cylinder 2, and then the upper cylinder 1 is installed on the lower cylinder 2 along the position of the first connecting piece 3 and the connecting pin. The cylinder clearance is checked to ensure accurate assembly.

[0036] The aforementioned cylinder structure connects one side of the upper cylinder 1 and the lower cylinder 2 via a first connecting member 3, and a second connecting member 4 securely connects the other side of the upper cylinder 1 and the lower cylinder 2. An anti-rotation structure is provided on the first connecting member 3, which ensures automatic and precise alignment and prevents rotation of the mating surfaces of the upper cylinder 1 and the lower cylinder 2, guaranteeing sealing and safety under high temperature and high pressure conditions. The second connecting member 4 further connects the other side of the upper cylinder 1 and the lower cylinder 2, improving overall assembly efficiency and reliability, and facilitating operation.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cylinder block structure, characterized in that, The cylinder block structure includes: Upper cylinder block and lower cylinder block; A first connecting member is inserted through and connected to one side of the upper cylinder and the lower cylinder, and the first connecting member is provided with an anti-rotation structure; The second connecting piece is fastened to the other side of the upper cylinder and the lower cylinder.

2. The cylinder block structure according to claim 1, characterized in that, The mating surface of the lower cylinder is provided with a recessed platform, which is connected to the anti-rotation structure of the first connector.

3. The cylinder block structure according to claim 2, characterized in that, The recessed platform is a square recessed platform, and the anti-rotation structure is a square protrusion provided on the body of the first connector, and the protrusion is located inside the recessed platform.

4. The cylinder block structure according to claim 1, characterized in that, The cylinder structure also includes at least two fasteners, which respectively fasten the two ends of the first connector to the upper cylinder and the lower cylinder.

5. The cylinder block structure according to claim 4, characterized in that, The cylinder structure also includes a gasket (6), which is disposed between the fastener and the upper and lower cylinders.

6. The cylinder block structure according to claim 4, characterized in that, The fastener is a nut, and the first connector is a stud or a double-ended bolt.

7. The cylinder block structure according to claim 1, characterized in that, The second connector is a connecting pin, which passes through the upper cylinder and connects to the lower cylinder.

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