Auxiliary platform for foundation pit stator offline construction of vertical water-turbine generator set

Abstract

The utility model relates to the field of hydraulic and hydroelectric engineering, and discloses a foundation pit stator offline construction auxiliary platform for a vertical water-turbine generator set, a platform main body of the construction auxiliary platform is annular, the outer edge of the platform main body is circular, and the inner edge of the platform main body is polygonal; the platform main body comprises a plurality of unit structures, and each unit structure comprises a horizontal first arc-shaped plate and a horizontal second arc-shaped plate; the support rod groups are used for supporting the first arc-shaped plate and the second arc-shaped plate; transverse handrails are further arranged between the inner supporting rods of the adjacent supporting rod sets, and the connecting pieces are inclined hole flanges and are arranged at the tail ends of the transverse handrails. All the inner supporting rods of the platform body extend towards the upper portion of the first arc-shaped plate and are connected to an extension part, the top end of the extension part is connected to a horizontal fastening circular ring, and a plurality of lap joint rods extend outwards in the radial direction from the outer side of the fastening circular ring. According to the device, the adjacent unit structures are quickly connected through the transverse handrails and the connecting pieces, so that the quick erection of the platform main body is accelerated, and the construction period is effectively shortened.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic and hydroelectric engineering, and in particular to an auxiliary platform for the stator offline construction of a vertical water turbine generator set foundation pit. Background Art

[0002] The purpose of the stator offline process of the hydropower station generator set is to install and fix the winding of the generator stator to ensure the normal operation of the generator. The stator winding is an important part of the generator, responsible for generating a magnetic field, which in turn generates current when the rotor rotates. Therefore, the stator offline process is an important part of the generator set installation process, and its quality directly affects the performance and normal operation of the generator.

[0003] Traditional vertical turbine generator stator offline generally adopts offline construction at the installation site or full-frame scaffolding in the foundation pit to assist offline. Most of the manual operation procedures are to build traditional welding scaffolding, stairs, etc., which is inefficient, and all stator offline procedures are manually operated, which leads to greater danger when climbing traditional scaffolding and stairs, inconvenient construction and operation, and prone to safety problems. In addition, in order to waterproof the generator set after the stator offline construction is completed, it is generally necessary to lay a waterproof cloth covering the entire stator, so it is necessary to set up a support frame at the foundation pit entrance, resulting in the stacking of supports near the foundation pit entrance, which poses a safety hazard. Utility Model Content

[0004] The technical problem solved by the utility model is that in the prior art, the stator of a vertical hydro-turbine generator set is generally offline by offline construction at the installation site or by erecting a full-frame rack in the foundation pit to assist offline, which has low efficiency and high risks in the climbing process. In addition, after the stator offline installation is completed, a waterproof cloth needs to be laid. The prior art usually requires additional waterproof cloth brackets, which leads to stacking of brackets at the foundation pit mouth, posing a safety hazard.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a construction auxiliary platform for the stator offline of a vertical hydro-generator set foundation pit, wherein the platform body of the construction auxiliary platform is annular, the outer edge of the platform body is circular, and the inner edge is polygonal;

[0006] The platform body includes a plurality of unit structures connected to each other by connecting pieces, the unit structures include a first horizontal curved plate and a second curved plate, the first curved plate and the second curved plate are arranged up and down; and also include a plurality of support rod groups for supporting the first curved plate and the second curved plate, the support rod groups include outer support rods arranged at the outer edges of the first curved plate and the second curved plate and inner support rods arranged at the inner edges of the first curved plate and the second curved plate, and the outer support rods and the inner support rods of the same support rod group are arranged radially along the platform body;

[0007] A horizontal railing is also provided between the inner supporting rods of adjacent supporting rod groups, and the end of the horizontal railing extends outward beyond the inner supporting rod at the edge;

[0008] The connecting piece is an oblique hole flange, which is arranged at the end of the horizontal railing;

[0009] All inner support rods of the platform body extend upward from the first arc-shaped plate and are connected to the extension part, the top of which is connected to a horizontal fastening ring, and a plurality of lap rods are radially extended outward from the outer side of the fastening ring.

[0010] Particularly, a kick plate is erected upward from the inner edges of the first arc-shaped plate and the second arc-shaped plate.

[0011] Particularly, the extension portion comprises a plurality of vertical support rods connected end to end, and adjacent vertical support rods are detachably connected via flanges.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model realizes the rapid connection of adjacent unit structures through the horizontal rails and the connectors, thereby accelerating the rapid erection of the platform body and effectively shortening the construction period. In addition, the extension part and the lap rod replace the waterproof cloth bracket in the prior art, thereby changing the waterproof cloth support assembly from being stacked at the foundation pit mouth to being integrated with the stator offline auxiliary platform, effectively avoiding the situation where the bracket is stacked at the foundation pit mouth, effectively ensuring the construction quality while also avoiding safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the device of the utility model.

[0014] Figure 2 A schematic diagram of the unit structure.

[0015] The meanings of the numbers in the figure are: unit structure—1; first arc plate—11; second arc plate—12; inner support rod—3; outer support rod—4; horizontal railing—5; connecting piece—6; extension part—7; fastening ring—8; overlapping rod—81; kick plate—9. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the accompanying drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.

[0017] like Figure 1-2 As shown, the utility model is a vertical hydro-generator stator downline construction auxiliary platform, the platform body of the construction auxiliary platform is annular, the outer edge of the platform body is circular, and the inner edge is polygonal;

[0018] The platform body includes a plurality of unit structures 1 connected to each other by connecting members 6, the unit structure 1 includes a first horizontal curved plate 11 and a second curved plate 12, the first curved plate 11 and the second curved plate 12 are arranged up and down; and also includes a plurality of support rod groups for supporting the first curved plate 11 and the second curved plate 12, the support rod groups include an outer support rod 4 arranged at the outer edge of the first curved plate 11 and the second curved plate 12 and an inner support rod 3 arranged at the inner edge of the first curved plate 11 and the second curved plate 12, and the outer support rod 4 and the inner support rod 3 of the same support rod group are arranged radially along the platform body;

[0019] A horizontal railing 5 is further provided between the inner supporting rods 3 of the adjacent supporting rod groups, and the end of the horizontal railing 5 extends outward beyond the inner supporting rod 3 at the edge;

[0020] The connecting member 6 is an oblique hole flange, which is arranged at the end of the horizontal railing 5;

[0021] All the inner support rods 3 of the platform body extend upward from the first arc-shaped plate 11 and are connected to the extension part 7. The top end of the extension part 7 is connected to a horizontal fastening ring 8. A plurality of lap rods 81 extend radially outward from the outer side of the fastening ring 8.

[0022] In a certain embodiment of the utility model, the platform body is divided into three unit structures 1, and the central angle corresponding to a single unit structure 1 is 120°. During the actual installation, a unit structure 1 is hoisted into the recessed pedestal at the foundation pit mouth, and then another unit structure 1 is hoisted to a position close to the previous unit structure 1, and the adjacent unit structures 1 are spliced ​​using the connecting piece 6, and then the third unit structure 1 is hoisted, and the third unit structure 1 is fixedly connected to the first two unit structures 1 from both sides of the third unit structure 1 through the connecting piece 6, thereby completing the installation process of the platform body. After the installation, the first arc plate 11 and the second arc plate 12 are spliced ​​into two circular walking platforms arranged up and down, which are used for stator offline construction. The inner support rod 3 is connected upward to the extension part 7, and with the horizontal railing 5, it can act as a guardrail to prevent construction personnel from falling. The extension part 7 is used to lift the lap rod 81 to the height of the foundation pit, which is convenient for laying the waterproof cloth on the lap rod 81 and also provides support for the use of the lap rod 81 and the waterproof cloth; the through hole of the inclined hole flange is inclined, which is convenient for connecting the horizontal railings 5 ​​of adjacent unit structures 1 together. In addition, structures such as V-shaped connecting sleeves can also be selected.

[0023] As a preferred embodiment, a kick plate 9 is erected upward from the inner edges of the first arc plate 11 and the second arc plate 12 .

[0024] In this embodiment, a kick plate 9 is provided on the inner edge of the first curved plate 11 and the second curved plate 12 to prevent small objects from falling along the edge of the curved plate and also to assist in protection.

[0025] As a preferred embodiment, the extension portion 7 includes a plurality of vertical support rods connected end to end, and adjacent vertical support rods are detachably connected via flanges.

[0026] In this embodiment, a specific structure of an extension portion 7 is provided, wherein the vertical support rods are prefabricated standard parts, and a plurality of vertical support rods are connected end to end via flanges. The extension portion 7 can be extended or shortened according to the actual depth of the foundation pit cap, thereby effectively increasing the versatility of the device of the utility model.

[0027] The words “connection” and “fixation” appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0028] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A vertical hydro-turbine generator stator offline construction auxiliary platform, characterized in that: The platform body of the construction auxiliary platform is annular, the outer edge of the platform body is circular, and the inner edge is polygonal; The platform body comprises a plurality of unit structures (1) connected to each other by connecting members (6), wherein the unit structures (1) comprise a first horizontal curved plate (11) and a second curved plate (12), wherein the first curved plate (11) and the second curved plate (12) are arranged vertically; and further comprises a plurality of support rod groups for supporting the first curved plate (11) and the second curved plate (12), wherein the support rod groups comprise outer support rods (4) arranged at the outer edges of the first curved plate (11) and the second curved plate (12) and inner support rods (3) arranged at the inner edges of the first curved plate (11) and the second curved plate (12), wherein the outer support rods (4) and the inner support rods (3) of the same support rod group are arranged radially along the platform body; A horizontal railing (5) is further provided between the inner supporting rods (3) of adjacent supporting rod groups, and the end of the horizontal railing (5) extends outward beyond the inner supporting rod (3) at the edge; The connecting piece (6) is a flange with an inclined hole, and is arranged at the end of the horizontal railing (5); All inner support rods (3) of the platform body extend upwardly from the first arc-shaped plate (11) and are connected to the extension portion (7). The top end of the extension portion (7) is connected to a horizontal fastening ring (8). A plurality of lap rods (81) extend radially outwardly from the outer side of the fastening ring (8).

2. A vertical hydro-generator stator offline construction auxiliary platform as claimed in claim 1, characterized in that: A kick plate (9) is erected upwards on the inner edges of the first curved plate (11) and the second curved plate (12).

3. A vertical hydro-generator stator offline construction auxiliary platform as claimed in claim 1, characterized in that: The extension part (7) comprises a plurality of vertical support rods connected end to end, and adjacent vertical support rods are detachably connected via flanges.

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