Supporting table for steam turbine maintenance

Abstract

The utility model provides a supporting table for steam turbine maintenance, and belongs to the technical field of steam turbines. The problem that an existing supporting table is poor in stability is solved. The supporting table for steam turbine maintenance comprises two bottom plates which are transversely and oppositely arranged, a supporting plate is connected to the upper ends of the bottom plates in an inserted mode, the supporting plate is provided with two supporting rollers capable of allowing the end of a blade shaft to be placed, the supporting table further comprises two connecting plates which are longitudinally and oppositely arranged, and inserting grooves with downward openings are formed in the lower ends of the connecting plates. The bottom plate is provided with a positioning part capable of being embedded into the inserting groove, the connecting plates are inserted into the bottom plate, the positioning part is located in the inserting groove, the connecting plates and the bottom plate define a supporting cavity, the supporting plates are arranged on the connecting plates in a sleeving mode, and the two ends of the supporting roller are rotationally connected to the two connecting plates respectively. According to the supporting table of the structure, the stability of the supporting table can be guaranteed while the supporting table is convenient to disassemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam turbines and relates to a supporting platform for steam turbine maintenance. Background Art

[0002] At present, steam turbines are often needed in thermal power plants, especially in thermal power plants with million-megawatt units. Steam turbine is a device that converts steam thermal energy into mechanical energy. The core component of the steam turbine is the blade shaft. The incoming gas is diverted by the blades on the blade shaft. After the blade shaft has been used for a period of time, it will be repaired. The commonly used supporting device is a support frame with a left and right support frame structure. The crane supports the suspended blade shaft on the support frame for maintenance.

[0003] Since the blade shaft is large in size and heavy in weight, the support frame is usually formed by welding, and the entire welded support frame is inconvenient to move and replace.

[0004] For example, Chinese patent application [Authorization Announcement No.: CN219882442U] discloses a maintenance and repair bracket for a steam turbine in a power plant, comprising a mobile base, a fixed component arranged on the side of the mobile base, a laser positioning device arranged on the upper surface of the mobile base, a support frame arranged on the upper surface of the mobile base, a drive unit arranged on the upper surface of the support frame, and an adjustment component arranged on the upper surface of the drive unit. A groove is provided on the upper surface of the mobile base, and the bottom surface of the inner wall of the groove is detachably connected to the bottom surface of the laser positioning device. The fixed component comprises a fixed plate, a threaded rod, a handle and a rubber pad. The drive unit comprises a drive component and a driven roller. The adjustment component comprises a rotating handle, a screw rod, a mobile bracket and a fixing bolt.

[0005] Although the above structure can improve the positioning of blade shafts of different sizes, when in use, the entire mobile base can be moved and stable support can be achieved through the support frame. However, due to the excessive weight of the blade shaft, rollers are arranged under the mobile base, which still causes the setting of the mobile base to be unstable. In addition, the structure of using multiple support rods to surround the support frame makes the stability of the entire base poor, thereby affecting the supporting effect of the blade shaft. Utility Model Content

[0006] The purpose of the utility model is to solve the above problems in the existing technology and propose a support platform for steam turbine maintenance. The technical problem to be solved by the utility model is: how to solve the problem of poor stability of the existing support platform.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A support platform for steam turbine maintenance, comprising two base plates arranged opposite to each other in the transverse direction, a support plate being plugged into the upper end of the base plate, and two support rollers for placing the ends of blade shafts are arranged on the support plate, characterized in that the support platform also comprises two connecting plates arranged opposite to each other in the longitudinal direction, the lower ends of the connecting plates are each provided with a plug-in groove opening facing downward, the base plate has a positioning portion that can be embedded in the plug-in groove, the connecting plate is plugged into the base plate and the positioning portion is located in the plug-in groove, and the connecting plate and the base plate are combined to form a support cavity, the support plate is sleeved on the connecting plate, and the two ends of the support roller are respectively rotatably connected to the two connecting plates.

[0009] Working principle: The connection between the base plate and the support plate is realized by plugging. At this time, the end of the blade shaft can be set between the two support rollers, which is convenient for the maintenance of the blade shaft. In order to improve the strength of the support platform, a connecting plate can be plugged on the base plate. The upper end of the connecting plate can realize the rotation connection to the support roller, so that the connecting plate not only has the function of enhancing strength but also facilitates installation. The two connecting plates are arranged opposite to each other in the longitudinal direction, and the two base plates are arranged opposite to each other in the transverse direction. The positioning part and the plug-in groove are arranged to realize the transverse positioning of the bottom of the base plate, and the support cavity formed by the overall encirclement can not only improve the overall strength of the support platform, but also facilitate the disassembly of the connecting plate and the base plate. The lower end surface of the base plate and the lower end surface of the connecting plate are directly arranged on the ground, which improves the stability of the support platform, thereby facilitating disassembly while ensuring the stability of the support platform.

[0010] In the above-mentioned support platform for steam turbine maintenance, the support platform also includes a positioning screw and a positioning nut, and the positioning parts are partially located outside the corresponding connecting plate, and the two positioning parts located outside the same connecting plate are fixedly connected by the positioning screw and the positioning nut.

[0011] The setting of the positioning screw and the positioning nut further enhances the stability of the connection between the two base plates and the stability of the bottom of the support platform. The positioning screw and the positioning nut are relatively common detachable parts, which facilitates loading and unloading.

[0012] In the above-mentioned support platform for turbine maintenance, the support platform also includes connecting screws and connecting nuts. The left and right sides of the connecting plate both have connecting parts located outside the bottom plate, and the connecting parts located outside the same bottom plate are fixedly connected by connecting screws and connecting nuts.

[0013] The setting of the connecting screw and the connecting nut improves the stability of the bottom connection of the two connecting plates, thereby enhancing the supporting stability of the bottom of the support platform, and the connecting screw and the connecting nut are relatively common detachable parts, which is convenient for loading and unloading.

[0014] In the above-mentioned support platform for steam turbine maintenance, the upper end of the base plate protrudes upward to form a limiting portion, and the support plate is provided with limiting holes arranged one-to-one corresponding to the limiting portion. The support plate is sleeved on the limiting portion, and the lower end surface of the support plate abuts against the upper end surface of the base plate, and the upper end surface of the limiting portion is arranged flush with the upper end surface of the support plate.

[0015] The setting of the limiting part enables the support plate to be mounted on the limiting part, thereby improving the convenience of installing the support plate. In order to improve the stability of the support plate, the support plate can be welded to the base plate, and the setting of the upper end surface of the limiting part ensures that the connection between the base plate and the support plate does not affect the use of the support plate.

[0016] In the above-mentioned support platform for steam turbine maintenance, the upper end protrusion of the connecting plate forms a mounting portion for rotatably connecting the end of the supporting roller, the supporting plate is provided with a mounting hole for the mounting portion to pass through, the supporting plate is sleeved on the base plate and the mounting portion passes through the mounting hole, and the lower end surface of the supporting plate abuts against the upper end surface of the connecting plate.

[0017] The arrangement of the mounting portion enhances the stability of the connection between the connecting plate and the supporting plate, thereby further improving the stability of the supporting platform.

[0018] In the above-mentioned support platform for steam turbine maintenance, the support platform also includes a fixing screw and a fixing nut, the upper ends of the two connecting plates are fixed by the fixing screw and the fixing nut, and the upper ends of the two bottom plates are fixed by the fixing screw and the fixing nut.

[0019] The arrangement of this structure enhances the stability of the connecting plate and the upper portion of the bottom plate, and further improves the stability of the support platform.

[0020] In the above-mentioned support platform for steam turbine maintenance, the width of the lower ends of the connecting plate and the bottom plate is greater than the width of the upper ends.

[0021] The narrow top and wide bottom structure makes the bottom of the support platform more stable, further improving the support effect of the support platform.

[0022] Compared with the prior art, the support platform for steam turbine maintenance has the following advantages: the two connecting plates are arranged opposite to each other in the longitudinal direction, the two bottom plates are arranged opposite to each other in the transverse direction, and the arrangement of the positioning portion and the plug-in groove realizes the transverse positioning of the bottom of the bottom plate, and also makes the support cavity formed by the overall enclosed part, which can not only improve the overall strength of the support platform, but also facilitate the disassembly of the connecting plate and the bottom plate, and the lower end surface of the bottom plate and the lower end surface of the connecting plate are directly arranged on the ground, which improves the stability of the support platform, thereby facilitating disassembly while ensuring the stability of the support platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a partial structural schematic diagram of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the connecting plate in the utility model.

[0026] Figure 4 It is a structural schematic diagram of the bottom plate of the utility model.

[0027] In the figure, 1, bottom plate; 11, positioning part; 12, limiting part; 2, support plate; 21, limiting hole; 22, mounting hole; 3, support roller; 4, connecting plate; 41, plug-in slot; 42, connecting part; 43, mounting part; 5, support cavity; 6, positioning screw; 61, positioning nut; 7, connecting screw; 71, connecting nut; 8, fixing screw; 81, fixing nut. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] like Figure 1 As shown, the support platform for steam turbine maintenance comprises two bottom plates 1 which are arranged opposite to each other in transverse direction, a support plate 2 is inserted into the upper end of the bottom plate 1, and two support rollers 3 are arranged on the support plate 2 for placing the ends of the blade shaft.

[0030] Specifically, Figure 1-4 As shown, the support platform also includes two connecting plates 4 arranged longitudinally opposite to each other, and the lower ends of the connecting plates 4 are each provided with a plug-in groove 41 with an opening facing downward, the bottom plate 1 has a positioning portion 11 that can be embedded in the plug-in groove 41, the connecting plate 4 is plugged into the bottom plate 1 and the positioning portion 11 is located in the plug-in groove 41, and the connecting plate 4 and the bottom plate 1 are surrounded to form a support cavity 5, the support plate 2 is sleeved on the connecting plate 4, and the two ends of the support roller 3 are rotatably connected to the two connecting plates 4 respectively.

[0031] Working principle: The connection between the bottom plate 1 and the support plate 2 is realized by plugging. At this time, the end of the blade shaft can be set between the two support rollers 3, which is convenient for the maintenance of the blade shaft. In order to improve the strength of the support platform, a connecting plate 4 can be plugged on the bottom plate 1. The upper end of the connecting plate 4 can realize the rotation connection of the support roller 3, so that the connecting plate 4 not only has the function of enhancing strength but also facilitates installation. The two connecting plates 4 are arranged opposite to each other in the longitudinal direction, and the two bottom plates 1 are arranged opposite to each other in the transverse direction. The arrangement of the positioning portion 11 and the plug-in groove 41 realizes the transverse positioning of the bottom of the bottom plate 1, and also makes the supporting cavity 5 formed by the overall encirclement, which can not only improve the overall strength of the support platform, but also facilitate the disassembly of the connecting plate 4 and the bottom plate 1. The lower end surface of the bottom plate 1 and the lower end surface of the connecting plate 4 are directly arranged on the ground, which improves the stability of the support platform, thereby facilitating disassembly while ensuring the stability of the support platform.

[0032] like Figure 1 and Figure 2 As shown, the support platform also includes a positioning screw 6 and a positioning nut 61. The positioning parts 11 are partially located on the outside of the corresponding connecting plate 4. The two positioning parts 11 located on the outside of the same connecting plate 4 are fixedly connected by the positioning screw 6 and the positioning nut 61. The support platform also includes a connecting screw 7 and a connecting nut 71. The left and right sides of the connecting plate 4 both have a connecting part 42 located on the outside of the base plate 1. The connecting parts 42 located on the outside of the same base plate 1 are fixedly connected by the connecting screw 7 and the connecting nut 71.

[0033] like Figure 1-3 As shown, the upper end of the bottom plate 1 protrudes upward to form a limiting portion 12, and the support plate 2 is provided with limiting holes 21 arranged one-to-one corresponding to the limiting portion 12. The support plate 2 is sleeved on the limiting portion 12, and the lower end surface of the support plate 2 abuts against the upper end surface of the bottom plate 1, and the upper end surface of the limiting portion 12 is flush with the upper end surface of the support plate 2. The upper end of the connecting plate 4 protrudes to form a mounting portion 43 for rotatably connecting the end of the supporting roller 3. The support plate 2 is provided with a mounting hole 22 for the mounting portion 43 to pass through. The support plate 2 is sleeved on the bottom plate 1 and the mounting portion 43 passes through the mounting hole 22, and the lower end surface of the support plate 2 abuts against the upper end surface of the connecting plate 4.

[0034] like Figure 1-4 As shown, the support platform also includes a fixing screw 8 and a fixing nut 81, the upper ends of the two connecting plates 4 are fixed by the fixing screw 8 and the fixing nut 81, the upper ends of the two base plates 1 are fixed by the fixing screw 8 and the fixing nut 81, and the width of the lower ends of the connecting plates 4 and the base plates 1 are both greater than the width of the upper ends.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A support platform for steam turbine maintenance, comprising two bottom plates (1) arranged opposite to each other in transverse direction, a support plate (2) being inserted at the upper end of the bottom plate (1), and two support rollers (3) being arranged on the support plate (2) for placing the ends of the blade shaft, characterized in that: The support platform also includes two connecting plates (4) arranged opposite to each other in the longitudinal direction, the lower ends of the connecting plates (4) are each provided with a plug-in slot (41) opening downwards, the bottom plate (1) has a positioning portion (11) capable of being inserted into the plug-in slot (41), the connecting plates (4) are plugged into the bottom plate (1) and the positioning portion (11) is located in the plug-in slot (41), and the connecting plates (4) and the bottom plate (1) are combined to form a support cavity (5), the support plate (2) is sleeved on the connecting plates (4), and the two ends of the support roller (3) are rotatably connected to the two connecting plates (4) respectively.

2. The steam turbine maintenance support platform according to claim 1, characterized in that: The support platform further comprises a positioning screw (6) and a positioning nut (61), wherein the positioning portions (11) are partially located outside the corresponding connecting plate (4), and the two positioning portions (11) located outside the same connecting plate (4) are fixedly connected via the positioning screw (6) and the positioning nut (61).

3. The steam turbine maintenance support platform according to claim 1 or 2, characterized in that: The support platform further comprises a connecting screw (7) and a connecting nut (71), and the left and right sides of the connecting plate (4) both have connecting portions (42) located outside the bottom plate (1), and the connecting portions (42) located outside the same bottom plate (1) are fixedly connected via the connecting screw (7) and the connecting nut (71).

4. The steam turbine maintenance support platform according to claim 1 or 2, characterized in that: The upper end of the bottom plate (1) protrudes upward to form a limiting portion (12); the support plate (2) is provided with limiting holes (21) arranged one-to-one with the limiting portions (12); the support plate (2) is sleeved on the limiting portion (12); the lower end surface of the support plate (2) abuts against the upper end surface of the bottom plate (1); and the upper end surface of the limiting portion (12) is flush with the upper end surface of the support plate (2).

5. The steam turbine maintenance support platform according to claim 1 or 2, characterized in that: The upper end protrusion of the connecting plate (4) forms a mounting portion (43) for rotatably connecting the end of the supporting roller (3); the supporting plate (2) is provided with a mounting hole (22) for the mounting portion (43) to pass through; the supporting plate (2) is sleeved on the bottom plate (1) and the mounting portion (43) passes through the mounting hole (22); and the lower end surface of the supporting plate (2) abuts against the upper end surface of the connecting plate (4).

6. The steam turbine maintenance support platform according to claim 1 or 2, characterized in that: The support platform also includes a fixing screw (8) and a fixing nut (81), the upper ends of the two connecting plates (4) are fixed by the fixing screw (8) and the fixing nut (81), and the upper ends of the two bottom plates (1) are fixed by the fixing screw (8) and the fixing nut (81).

7. The steam turbine maintenance support platform according to claim 1 or 2, characterized in that: The width of the lower ends of the connecting plate (4) and the bottom plate (1) is greater than the width of the upper ends.

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