A steam turbine diaphragm overhauling support

Abstract

The utility model belongs to the field of steam turbine auxiliary overhauling equipment provides a steam turbine bulkhead overhauls support, including bottom support and side support, its characterized in be that bottom support includes two parallel interval arrangement's long strip structure, be provided with a plurality of side support on bottom support, a plurality of side support interval setting along the length direction of bottom support, every side support is vertically connected between two long strip structures, the utility model discloses through the triple fixed structure of bottom support, side support, arc slot, steam turbine bulkhead can orderly be placed on steam turbine bulkhead overhauls and place support, greatly reduced the occupation of overhauling site, at the same time, the convenience of overhauling personnel to bulkhead or steam seal block carries out overhauling measurement work, improved work efficiency, solved the problem that traditional support is easy to shift, poor stability, arc slot fillet transition and arc gasket buffer design can also avoid bulkhead damage, greatly improve the overhauling stability and security.

Description

Technical Field

[0001] This utility model belongs to the field of steam turbine auxiliary maintenance equipment, specifically relating to a steam turbine diaphragm maintenance bracket. Background Technology

[0002] As a key component of the steam turbine, the turbine diaphragm requires measurement and adjustment of its various parts during maintenance, particularly the steam seal blocks. Currently, during turbine maintenance, the diaphragms are typically hoisted out and placed horizontally on a maintenance platform. When maintenance is needed, they are then lifted vertically or flipped over. Because there are many diaphragms in the turbine body, and their diameters are large, horizontal placement requires a large maintenance platform and necessitates ample open space, which also hinders maintenance work. Therefore, to save space and facilitate maintenance, a diaphragm maintenance support bracket was designed, effectively solving the problems of insufficient space and low efficiency in diaphragm and steam seal block maintenance during turbine body maintenance. Utility Model Content

[0003] The purpose of this invention is to provide a turbine diaphragm maintenance support that can effectively solve the problems of insufficient space and low efficiency in diaphragm and steam seal block maintenance during turbine body maintenance.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a turbine diaphragm maintenance bracket, including a bottom support and side supports, characterized in that the bottom support includes two parallel and spaced elongated strip structures, and a plurality of side supports are provided on the bottom support, the plurality of side supports are spaced apart along the length direction of the bottom support, and each side support is vertically connected between the two elongated strip structures.

[0005] Optionally, in the bottom support interval area formed by the separation of two adjacent side supports, grooves are correspondingly provided on both elongated structures of the bottom support.

[0006] Optionally, the groove is an arc-shaped groove, and the curvature of the arc-shaped groove is adapted to the arc surface of the edge of the turbine to be inspected.

[0007] Optionally, the edges of the arc-shaped grooves are connected by rounded corners to avoid scratching the turbine diaphragm and reduce stress concentration.

[0008] Optionally, at the interval between two adjacent side supports, each of the two elongated structures of the bottom support is provided with two arc-shaped grooves.

[0009] Optionally, each of the arc-shaped grooves is provided with an arc-shaped gasket, the shape of which is perfectly fitted to the structure of the arc-shaped groove.

[0010] Optionally, the side support is a rectangular frame structure, which is formed by four long cylindrical columns connected end to end; the bottom column of the rectangular frame is perpendicularly fixed to the two long cylindrical structures of the bottom support.

[0011] Optionally, side gaskets are provided on the two longitudinal side cylinders of the side support.

[0012] Optionally, there are two side gaskets, which are symmetrically arranged radially on the outer surface of the longitudinal side cylinder and cover the area in contact with the turbine partition.

[0013] Optionally, a support foot is provided at the junction of the bottom support and the side support to improve the stability of the entire bracket.

[0014] The beneficial effects of this utility model are as follows: By adopting the above-mentioned device, turbine diaphragms can be placed in an orderly manner on the turbine diaphragm maintenance support, which greatly reduces the occupation of maintenance space. At the same time, the diaphragms are placed vertically on the support, which facilitates maintenance personnel to carry out maintenance and measurement work on the diaphragms or steam seal blocks, greatly improving work efficiency.

[0015] The triple fixing structure of bottom support, side support and arc groove solves the problems of easy displacement and poor stability of traditional support. The rounded corner transition of the arc groove and the arc pad buffer design can also avoid damage to the partition, greatly improving the stability and safety of maintenance. The arc-shaped gasket and side gasket are removable and replaceable, reducing maintenance workload and costs. The overall structure balances support strength and lightweight design, with balanced stress distribution and long service life, meeting the needs of long-term, high-frequency maintenance. Attached Figure Description

[0016] Figure 1 : Schematic diagram of the overall structure of this utility model; Figure 2 A: A partially enlarged schematic diagram of the arc-shaped groove structure of this utility model; The components include: 1. bottom support; 2. side support; 3. arc groove; 4. arc pad; 5. side pad; and 6. support foot. Detailed Implementation

[0017] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0018] In this embodiment, see Figure 1-2 A turbine diaphragm maintenance bracket includes a bottom support 1 and side supports 2. The bottom support 1 includes two parallel and spaced elongated structures. Multiple side supports 2 are provided on the bottom support 1. The multiple side supports 2 are spaced apart along the length direction of the bottom support 1. Each side support 2 is vertically connected between the two elongated structures. Bottom support 1 ensures the height of the diaphragm placement and prevents the bottom of the diaphragm from dragging on the ground and damaging the maintenance area floor. Due to the large number and weight of the diaphragms, the bottom support is made of thick-walled steel pipe to increase the load-bearing capacity of the support and meet the placement requirements. Side support 2 is to prevent the diaphragms from tipping over and to divide the turbine diaphragm placement support into areas. The width and number of each area can be adjusted according to the actual situation to meet the use of different turbine unit diaphragms. Within the space between two adjacent side supports 2 forming the bottom support 1, grooves are correspondingly provided on both long strip structures of the bottom support 1. The groove can fit into the edge of the turbine diaphragm, further restricting the longitudinal movement of the diaphragm on the bottom support 1. Together with the side support 2, it forms a double limit in both the lateral and longitudinal directions, improving the stability of the diaphragm during maintenance and preventing the diaphragm from shifting due to operational collisions. The groove is shaped like an arc groove 3, and the curvature of the arc groove 3 is adapted to the arc surface of the edge of the turbine to be inspected. The groove is an arc-shaped groove 3, and the curvature of the arc-shaped groove 3 is adapted to the arc surface of the edge of the turbine diaphragm to be inspected. The arc design allows the edge of the turbine diaphragm to make surface contact with the groove, rather than point contact or line contact. This reduces the local stress on the edge of the diaphragm, avoids scratches or deformation caused by hard metal contact, and improves the tightness of the fit through the curvature adaptation, making the diaphragm more stable. The edges of the arc-shaped grooves 3 are all connected by rounded corners to avoid scratching the turbine diaphragm and reduce stress concentration. At the interval between two adjacent side supports 2, two arc-shaped grooves 3 are provided on each of the two long strip structures of the bottom support 1. The bottom support 1 has two arc-shaped grooves 3 on each of its two long strip structures, which can improve the support's capacity to accommodate the turbine partition. Each of the arc-shaped grooves 3 is provided with an arc-shaped gasket 4, the shape of which is completely fitted to the structure of the arc-shaped groove 3. The arc-shaped gasket 4 can be made of elastic material, which can not only buffer the contact pressure between the turbine diaphragm and the metal groove, avoiding wear on the surface coating of the turbine diaphragm, but also fill the small gap between the arc-shaped groove 3 and the edge of the turbine diaphragm, reducing the slight shaking of the diaphragm during maintenance. At the same time, the arc-shaped gasket 4 can be disassembled and replaced separately, reducing the maintenance cost of the bracket. The side support 2 is a rectangular frame structure, which is formed by four long cylindrical columns connected end to end; the bottom column of the rectangular frame is perpendicularly fixed to the two long cylindrical structures of the bottom support 1. Side gaskets 5 are provided on the two longitudinal side cylinders of the side support 2. There are two side gaskets 5, which are symmetrically arranged on the outer surface of the longitudinal side cylinder along the radial direction of the cylinder and cover the area in contact with the turbine partition. The side gasket 5 can directly contact the side of the turbine diaphragm, serving as a buffer layer between the metal support and the turbine diaphragm to avoid surface damage caused by direct friction between the two. At the same time, the side gasket 5 is also detachable. The presence of the side gasket 5 can increase the contact friction force, further preventing the turbine diaphragm from sliding laterally between the side supports 2, and improving the safety during maintenance operations. A support foot 6 is provided at the junction of the bottom support 1 and the side support 2 to improve the stability of the entire bracket.

[0019] Working principle: The bottom support 1 provides a stable base with two parallel, spaced-apart long strip structures, allowing operators to place it between the strips according to the width of the diaphragm for initial positioning. Multiple side supports 2, spaced along the length of the bottom support 1, are vertically connected to the long strip structures, forming a lateral limiting frame to restrict lateral sliding. Side gaskets 5 on the longitudinal cylindrical sides prevent scratching when the turbine diaphragm sides collide with the longitudinal cylindrical sides. In the interval area between adjacent side supports 2 and the bottom support 1, the arc-shaped grooves 3 on the two long strip structures precisely fit into the arc surface of the turbine diaphragm edge. The arc-shaped gaskets 4 in the arc-shaped grooves 3 and the side gaskets 5 of the side supports 2 form buffer layers from the edges and sides, respectively. The rounded corners of the arc-shaped grooves 3 prevent scratches. The support feet 6 at the junction of the bottom support 1 and the side supports 2 increase the grounding area, further enhancing overall stability and providing a safe foundation for maintenance.

[0020] The beneficial effects of this utility model are as follows: By adopting the above-mentioned device, turbine diaphragms can be placed in an orderly manner on the turbine diaphragm maintenance support, which greatly reduces the occupation of maintenance space. At the same time, the diaphragms are placed vertically on the support, which facilitates maintenance personnel to carry out maintenance and measurement work on the diaphragms or steam seal blocks, greatly improving work efficiency.

[0021] The triple fixing structure of bottom support 1, side support 2, and arc groove 3 solves the problems of easy displacement and poor stability of traditional supports. The rounded corner transition of arc groove 3 and the buffer design of arc pad 4 can also avoid damage to the partition, greatly improving the stability and safety of maintenance. The arc-shaped gasket 4 and the side gasket 5 are removable and replaceable, reducing maintenance workload and costs. The overall structure balances support strength and lightweight design, with balanced stress distribution and long service life, meeting the needs of long-term, high-frequency maintenance.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A turbine diaphragm maintenance support, comprising a bottom support (1) and side supports (2), characterized in that, The bottom support (1) includes two parallel strip-shaped structures. Multiple side supports (2) are provided on the bottom support (1). The multiple side supports (2) are spaced apart along the length direction of the bottom support (1). Each side support (2) is vertically connected between the two strip-shaped structures.

2. The turbine diaphragm maintenance bracket as described in claim 1, characterized in that, Within the interval area of ​​the bottom support (1) formed by the separation of two adjacent side supports (2), grooves are provided on both long strip structures of the bottom support (1).

3. The turbine diaphragm maintenance bracket as described in claim 2, characterized in that, The groove is an arc-shaped groove (3), and the curvature of the arc-shaped groove (3) is adapted to the arc surface of the edge of the turbine to be inspected.

4. The turbine diaphragm maintenance bracket as described in claim 3, characterized in that, The edges of the arc groove (3) are all connected by rounded corners to avoid scratching the turbine diaphragm and reduce stress concentration.

5. A turbine diaphragm maintenance bracket as described in claim 4, characterized in that, At the interval between two adjacent side supports (2), two arc-shaped grooves (3) are provided on each of the two long strip structures of the bottom support (1).

6. A turbine diaphragm maintenance bracket as described in claim 5, characterized in that, Each of the arc grooves (3) is provided with an arc-shaped gasket (4), the shape of which is completely fitted to the structure of the arc groove (3).

7. A turbine diaphragm maintenance bracket as described in claim 1, characterized in that, The side support (2) is a rectangular frame structure, which is formed by four long cylindrical columns connected end to end; the bottom column of the rectangular frame is vertically fixed to the two long cylindrical columns of the bottom support (1).

8. A turbine diaphragm maintenance bracket as described in claim 7, characterized in that, Side gaskets (5) are provided on the two longitudinal side cylinders of the side support (2).

9. A turbine diaphragm maintenance bracket as described in claim 8, characterized in that, There are two side gaskets (5), which are symmetrically arranged on the outer side surface of the longitudinal side cylinder along the radial direction of the cylinder and cover the area in contact with the turbine partition.

10. A turbine diaphragm maintenance bracket as described in claim 8, characterized in that, A support foot (6) is provided at the junction of the bottom support (1) and the side support (2) to improve the stability of the entire support.

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