Quickly-assembled steam turbine chassis and steam turbine

Abstract

The invention relates to a fast-assembly steam turbine chassis which comprises a first supporting assembly, a middle connecting assembly and a second supporting assembly which are connected in sequence. The first supporting assembly is of a flexible structure which counteracts thermal expansion of the air cylinder. The second support assembly is configured as a structure for mounting a cylinder. The turbine chassis has the advantages that due to the design of the first supporting assembly of the flexible structure, when a unit on the turbine chassis is heated to expand, the flexible structure can be used for allowing the front bearing seat to move front and back, and the left-right center of the unit on the chassis is kept unchanged; besides, due to the fact that the first supporting assembly, the middle connecting assembly and the second supporting assembly are detachably connected, for example, bolt connection is adopted, when the first supporting assembly, the middle connecting assembly and the second supporting assembly are machined and installed, all the parts can be independently machined, the progress cannot be influenced by one another, the production period is shortened, the production difficulty is lowered, and the installation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam turbines, in particular to a quick-assembly steam turbine chassis and a steam turbine. Background Art

[0002] At present, domestic steam turbine manufacturers mainly use the traditional integral chassis structure, which has complex processing and assembly, cumbersome installation process, and the front and rear platform and support beam are welded into a whole. It is difficult to adjust the center and the installation period is long. Summary of the Invention

[0003] The present invention aims to solve the technical problems existing in the prior art and provides a quick-assembly steam turbine chassis and a steam turbine, thereby reducing construction costs and periods.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A first aspect of the present invention provides a quick-install steam turbine chassis, comprising a first support assembly, an intermediate connection assembly, and a second support assembly connected in sequence; The first support assembly is configured as a flexible structure to offset thermal expansion of the cylinder; The second supporting assembly is configured as a structure for mounting a cylinder.

[0005] As a further technical solution, the first supporting assembly, the intermediate connecting assembly, and the second supporting assembly are detachably connected.

[0006] As a further technical solution, the first support assembly includes a first platen, a flexible support member, a first support member, and a second support member; The first platform carries the flexible support member, the first support member, and the second support member, and the first support member and the second support member are both connected to the first platform through the flexible support member; The first supporting member and the second supporting member are arranged in parallel and are both arranged horizontally on the upper portion of the first platform.

[0007] As a further technical solution, the first support member and the second support member are connected by a connecting plate.

[0008] As a further technical solution, an adjustment member is provided at the connection between the intermediate connection assembly and the first support assembly to offset the expansion of the cylinder.

[0009] As a further technical solution, the intermediate connecting assembly includes a first connecting oblique beam and a second connecting oblique beam; One common end of the first connecting oblique beam and the second connecting oblique beam is connected to the first support assembly through the adjustment member, and the other common end of the first connecting oblique beam and the second connecting oblique beam is connected to the second support member group, and the longitudinal cross-section structure formed by the first connecting oblique beam and the second connecting oblique beam is an eight-shaped structure.

[0010] As a further technical solution, the second support member assembly includes a base and a support seat; The base is used to support the support seat, and the base and the support seat are assembled into a structure that supports the cylinder.

[0011] As a further technical solution, the base includes a second platform, a third platform, and a horizontal connecting member; There are two of each of the second platform and the horizontal connecting member, and the inner side of one of the second platform is connected to one of the horizontal connecting members, and the two horizontal connecting members are connected via the third platform; The support seat is arranged on the third platen.

[0012] As a further technical solution, the support seat includes an intermediate support block, a vertical connecting pillar, and a rear bearing seat body connected in sequence from bottom to top; The bottom of the intermediate support block is arranged on the third platen; the rear bearing seat body is used to support the cylinder.

[0013] A second aspect of the present invention includes a steam turbine, comprising a quick-assembly steam turbine chassis as described in the first aspect.

[0014] The beneficial effects of the present invention are: 1. The design of the first support assembly of the flexible structure in the present invention allows the front bearing seat to move forward and backward when the unit on the steam turbine chassis expands due to heat, while maintaining the left and right center of the unit on the chassis unchanged; In addition, the structural mode of disassembly and connection of the first supporting assembly, the intermediate connecting assembly, and the second supporting assembly, such as bolt connection, facilitates the processing and installation of the first supporting assembly, the intermediate connecting assembly, and the second supporting assembly, and each part can be processed separately without affecting the progress of each other, thereby shortening the production cycle, reducing the production difficulty, and improving the installation efficiency; 2. The connection node between the first support assembly and the intermediate connection assembly is connected by an adjustment piece. The thickness of the adjustment piece can be selected according to the needs to offset some of the cylinder expansion. The combination of the adjustment piece and the first support assembly is designed to ensure that the center of the unit stator bearing and the center of the rotor bearing on the turbine chassis are consistent. 3. The second support assembly is welded to the rear cylinder as one, which enhances the support strength of the rear chassis, reduces the overall processing of the chassis, and reduces the number of installation steps; 4. When installing a steam turbine equipped with the chassis of the present invention, each part of the chassis can be installed separately without affecting each other, which can better control the deformation of the flexible structure, facilitate the single-layer layout of the whole machine, and has a compact structure and high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a quick-install steam turbine chassis of the present invention; Figure 2 This is a schematic top view of the structure of a quick-assembly steam turbine chassis of the present invention; Figure 3 for Figure 1 A schematic structural diagram of a longitudinal section of the second support assembly in perspective; Figure 4 This is a structural diagram of the second support assembly when the second platform, the third platform, and the horizontal connecting member are connected.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows: First support assembly 1, first platform 11, flexible support member 12, first support member 13, second support member 14, connecting plate 15; Intermediate connecting assembly 2, first connecting oblique beam 21, second connecting oblique beam 22, and cross beam 23; Second support assembly 3, base 31, second platform 311, third platform 312, horizontal connector 313; support base 32, middle support block 321, vertical connecting pillar 322, rear bearing seat 323; lower rib 33, bottom plate 34, upper rib 35, center split flange 36; Cylinder 4, adjusting part 5. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0018] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0019] In the description of this application, the term "for example" is used to mean "used as an example, illustration or explanation". Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any person skilled in the art to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art will recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0020] Example 1 See Figure 1-Figure 3 This embodiment provides a quick-install steam turbine chassis, including a first support assembly 1, an intermediate connection assembly 2, and a second support assembly 3 connected in sequence; the first support assembly 1 is constructed as a flexible structure to offset the thermal expansion of the cylinder 4; the second support assembly 3 is constructed as a structure for installing the cylinder 4.

[0021] It should be noted that the first support assembly 1 can be used to offset the thermal expansion of the turbine during operation. For example, when the turbine expands due to heat, the left and right centers of the unit on the chassis can be kept unchanged; the cylinder 4 is installed on the second support assembly 3. For example, the second support assembly 3 is welded to the cylinder 4 thereon, so that the overall strength is enhanced and the installation steps are reduced.

[0022] In a specific implementation, the first support assembly 1, the intermediate connection assembly 2, and the second support assembly 3 are removable and removable. For example, the first support assembly 1, the intermediate connection assembly 2, and the second support assembly 3 are connected by bolts to form the chassis of the steam turbine. Therefore, the steam turbine is placed on this chassis, enabling quick assembly and can be shipped as a complete unit.

[0023] This structural design allows each structure (such as the first support component 1, the intermediate connection component 2, and the second support component 3) to be processed and installed separately without affecting each other's progress, thereby shortening the construction period and improving the construction progress.

[0024] See Figure 1-Figure 3Furthermore, the first support assembly 1 includes a first platform 11, a flexible support member 12, a first support member 13, and a second support member 14; the first platform 11 carries the flexible support member 12, the first support member 13, and the second support member 14, and the first support member 13 and the second support member 14 are both connected to the first platform 11 through the flexible support member 12; the first support member 13 and the second support member 14 are arranged in parallel and are both horizontally arranged on the upper part of the first platform 11.

[0025] It should be noted that at least two flexible support members 12 are provided, i.e., each of the first support member 13 and the second support member 14 is connected to the first platen 11 via at least one flexible support member 12. For example, the first support member 13 is connected to the first platen 11 via one flexible support member 12, and the second support member 14 is connected to the first platen 11 via two flexible support members 12. In this case, the two flexible support members 12 connected to the second support member 14 are arranged parallel and spaced apart. For example, the flexible support members 12 can be made of low-alloy high-strength structural steel to better withstand flexible deformation.

[0026] It should be noted that the flexible support member 12 can better control the deformation of the turbine caused by thermal expansion to keep the left and right centers of the turbine unchanged; because the first support component 1 can be processed separately and then assembled with other structures, the deformation of the flexible support member 12 can be adjusted before assembling the chassis, and then the chassis can be assembled. The process is simple and practical, and can better meet the installation and operation of the turbine.

[0027] For example, to facilitate installation of the steam turbine-related structures on the chassis of this embodiment, the first support member 13 and the second support member 14 are connected by a connecting plate 15. It should be noted that if there are two connecting plates 15, the two connecting plates 15 are connected by the first supporting member 13, so that the cross-section formed by the connecting plates 15 and the first supporting member 13 forms a U-shape, with the opening of the U-shape facing the intermediate connecting assembly 2. It should be noted that, in this case, the two top ends of the U-shape are connected to the second supporting member 14.

[0028] The first supporting assembly 1 of the structure facilitates the installation of the steam turbine.

[0029] See Figure 1 、 Figure 2In a specific implementation, an adjustment member 5 is provided at the connection between the intermediate connection assembly 2 and the first support assembly 1 to offset the expansion of the cylinder 4. Specifically, during the preparation of the first support assembly 1 and the intermediate connection assembly 2, the adjustment member 5 can be prepared to accommodate the expansion of the cylinder 4. For example, the adjustment member 5 can be an adjustment pad. This adjustment pad can partially offset the expansion of the cylinder 4. Combined with the flexible support member 12, this ensures that the center of the stator bearing and the center of the rotor bearing of the steam turbine unit remain aligned.

[0030] See Figure 1-Figure 3 In the specific implementation process, the intermediate connecting component 2 includes a first connecting oblique beam 21 and a second connecting oblique beam 22; one common end of the first connecting oblique beam 21 and the second connecting oblique beam 22 are connected to the first supporting component 1 through the adjusting member 5, and the other common end of the first connecting oblique beam 21 and the second connecting oblique beam 22 are connected to the second supporting member 14, and the longitudinal cross-section structure formed by the first connecting oblique beam 21 and the second connecting oblique beam 22 is an eight-shaped structure.

[0031] For example, the first connecting oblique beam 21 and the second connecting oblique beam 22 are connected by a cross beam 23. It should be noted that, to improve stability and load-bearing capacity, two cross beams 23 are provided, for example, and are arranged in parallel and spaced apart between the first connecting oblique beam 21 and the second connecting oblique beam 22. For example, the first connecting oblique beam 21 is welded to the second connecting oblique beam 22 via the cross beam 23.

[0032] It should be noted that the first connecting oblique beam 21 and the second connecting oblique beam 22 are both connected to the first platform 11 through the adjusting member 5 .

[0033] See Figures 1-4 In a specific implementation, the second support assembly 3 includes a base 31 and a support seat 32. The base 31 is used to support the support seat 32, and the base 31 and the support seat 32 are assembled to support the cylinder 4. It should be noted that the second support assembly 3 is a structure with the cylinder 4. For example, the cylinder 4 and the second support assembly 3 are welded together.

[0034] For example, in order to improve stability and aesthetics, both sides of the base 31 (such as Figure 1 A lower rib plate 33, a bottom plate 34, an upper rib plate 35, and a center dividing surface flange 36 are symmetrically provided on the front and rear sides of the viewing angle; and the lower rib plate 33, the bottom plate 34, the upper rib plate 35, and the center dividing surface flange 36 are connected in sequence from bottom to top; it should be noted that the cylinder 4 is installed on the upper part of the center dividing surface flange 36.

[0035] Furthermore, the base 31 includes a second platform 311, a third platform 312, and a horizontal connecting piece 313; the second platform 311 and the horizontal connecting piece 313 are each provided with two, and the inner side of one second platform 311 is connected to one horizontal connecting piece 313, and the two horizontal connecting pieces 313 are connected through the third platform 312 to support the overall weight of the rear of the chassis, improve strength, reduce processing and installation, and ensure that the chassis can be moved along the platform. Figure 1 The left and right centers of the viewing angle structure remain unchanged; the support seat 32 is arranged on the third platform 312. It should be noted that the two second platforms 311 are as follows Figure 1 Front-to-back orientation of the viewing angle shown.

[0036] For example, the support base 32 includes an intermediate support block 321, vertical connecting struts 322, and a rear bearing seat body 323, which are sequentially connected from bottom to top. The bottom of the intermediate support block 321 is located on the third platform 312. The rear bearing seat body 323 is used to support the cylinder 4. This structural design serves as the main body supporting the cylinder 4, and combines with the second platform 311, the lower rib plate 33, the bottom plate 34, the upper rib plate 35, the center split flange 36, and other structures to stably support the cylinder 4. It also facilitates processing, allowing the second support assembly 3 with the cylinder 4 to be directly assembled and connected to the first support assembly 1 and the intermediate connecting assembly 2. During this process, the deformation of the flexible support member 12 and the size of the adjustment member 5 can also be controlled.

[0037] This embodiment has the characteristics of safe and reliable structure, sufficient bearing capacity, convenient operation of processing size, simple and practical manufacturing process, short processing cycle, which can effectively reduce manufacturing costs; and the installation and debugging process is convenient, which greatly shortens the installation and debugging cycle, and has a beautiful and elegant appearance.

[0038] Example 2 A steam turbine is provided, comprising a quick-install steam turbine chassis as described in Example 1. This chassis structure allows the steam turbine main engine and components to be installed on the chassis to be installed and debugged in the factory before shipment as a whole. During installation, the steam turbine can be integrated onto the chassis described in Example 1, allowing the entire unit to be arranged in a single layer, resulting in a compact structure and high operating efficiency.

[0039] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0040] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0041] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A quick-assembly steam turbine chassis, characterized in that: It comprises a first supporting assembly (1), an intermediate connecting assembly (2), and a second supporting assembly (3) which are connected in sequence; The first support assembly (1) is configured as a flexible structure for offsetting thermal expansion of the cylinder (4); The second support assembly (3) is configured as a structure for mounting the cylinder (4).

2. The quick-assembly steam turbine chassis according to claim 1, characterized in that: The first supporting assembly (1), the intermediate connecting assembly (2), and the second supporting assembly (3) are detachably connected.

3. The quick-assembly steam turbine chassis according to claim 1, characterized in that: The first support assembly (1) comprises a first platform (11), a flexible support member (12), a first support member (13), and a second support member (14); The first platform (11) carries the flexible support member (12), the first support member (13), and the second support member (14), and the first support member (13) and the second support member (14) are both connected to the first platform (11) via the flexible support member (12); The first support member (13) and the second support member (14) are arranged in parallel and are both arranged horizontally on the upper part of the first platform (11).

4. The quick-assembly steam turbine chassis according to claim 3, characterized in that: The first support member (13) and the second support member (14) are connected via a connecting plate (15).

5. The quick-assembly steam turbine chassis according to claim 1, characterized in that: An adjusting member (5) is provided at the connection between the intermediate connecting assembly (2) and the first supporting assembly (1) to offset the expansion of the cylinder (4).

6. The quick-assembly steam turbine chassis according to claim 5, characterized in that: The intermediate connection assembly (2) comprises a first connecting oblique beam (21) and a second connecting oblique beam (22); One common end of the first connecting oblique beam (21) and the second connecting oblique beam (22) is connected to the first support assembly (1) via the adjusting member (5), and the other common ends of the first connecting oblique beam (21) and the second connecting oblique beam (22) are connected to the second support member (14), and the longitudinal cross-section formed by the first connecting oblique beam (21) and the second connecting oblique beam (22) is in an eight-shaped structure.

7. The quick-assembly steam turbine chassis according to claim 6, characterized in that: The second support component (3) comprises a base (31) and a support seat (32); The base (31) is used to support the support seat (32), and the base (31) and the support seat (32) are assembled into a structure that supports the cylinder (4).

8. The quick-assembly steam turbine chassis according to claim 7, characterized in that: The base (31) includes a second platform (311), a third platform (312), and a horizontal connecting member (313); Two of the second platform (311) and the horizontal connecting member (313) are provided, and the inner side of one of the second platform (311) is connected to one of the horizontal connecting members (313), and the two horizontal connecting members (313) are connected via the third platform (312); The support seat (32) is arranged on the third platform (312).

9. The quick-assembly steam turbine chassis according to claim 8, characterized in that: The support seat (32) comprises an intermediate support block (321), a vertical connecting support column (322), and a rear bearing seat body (323) connected in sequence from bottom to top; The bottom of the intermediate support block (321) is arranged on the third platform (312); the rear bearing seat body (323) is used to support the cylinder (4).

10. A steam turbine, characterized in that: It comprises a quick-assembly steam turbine chassis as described in any one of claims 1-9.

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