A stator installation platform structure in a hydro-generator pit and its installation method

Abstract

The present invention belongs to the technical field of hydro-generator installation, specifically a stator installation platform structure in a hydro-generator pit, comprising a base and a casting layer covering the top of the base, a slot is longitudinally provided in the base, and a support seat is provided at the bottom of the base, an insert block is provided on the top of the support seat, and the insert block is inserted in the slot, a through groove is transversely provided in the insert block, and an annular groove is provided at the top of the base, an annular steel bar is provided in the annular groove, and the annular steel bar is passed through the through groove, a support assembly is provided at the bottom of the support seat, and a feed pipe is provided on the top of the support assembly, and the feed pipe longitudinally penetrates the insert block and extends upward. The present invention can tightly connect the insert block and the base through the annular steel bar, provide longitudinal support to the base through the support assembly under the insert block, and provide transverse support to the base through the transverse beam reinforcement, so that the base is more stable when subjected to bidirectional force, and can provide a good installation environment for the hydro-generator.

Description

Technical Field

[0001] The present invention relates to the technical field of hydro-generator installation, in particular to a stator installation platform structure in a hydro-generator pit and an installation method thereof. Background Art

[0002] Many large hydro-turbine generator stator installations are carried out within the machine pit, requiring the construction of an installation platform. Existing installation platforms are typically constructed from a combination of columns, covers, and beams. These platforms are inherently unstable, particularly when subjected to lateral or longitudinal forces, and their load-bearing capacity is poor, impacting the proper operation of the hydro-turbine generator. Summary of the Invention

[0003] The object of the present invention is to provide a stator mounting platform structure in a hydro-turbine generator pit and an installation method thereof, so as to solve the problems of insufficient overall stability proposed in the above-mentioned background technology, which makes it easy to fluctuate when subjected to lateral or longitudinal forces, and at the same time the bearing capacity of the mounting platform is poor.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a stator mounting platform structure in a pit of a hydro-turbine generator, comprising a base and a casting layer covering the top of the base, a slot being longitudinally provided in the base, and a support seat being provided at the bottom of the base, an insert being provided at the top of the support seat, and the insert being inserted in the slot, a through groove being transversely provided in the insert, and an annular groove being provided at the top of the base, an annular steel bar being provided in the annular groove, and the annular steel bar being passed through the through groove, a support assembly being provided at the bottom of the support seat, and a feed pipe being provided at the top of the support assembly, and the feed pipe longitudinally passes through the insert and extends upward.

[0005] Preferably, a circular plate body is provided in the middle of the top of the base, and two through grooves are longitudinally opened in the middle of the circular plate body and the middle of the base, and a circular steel body is provided in the circular plate body.

[0006] Preferably, a through slot three for transverse beam reinforcement is transversely opened in the insert block, the transverse beam reinforcement is transversely inserted in the through slot three, one end of the transverse beam reinforcement passes through the through slot three and is fixedly connected to the circular steel body in the circular plate body, and the other end of the transverse beam reinforcement extends outward.

[0007] Preferably, a supporting oblique beam is provided on the side wall of the supporting seat, and an end of the supporting oblique beam facing away from the supporting seat is fixedly connected to the bottom of the base.

[0008] Preferably, a steel bar fixing piece is provided on the top of the base, and an arc-shaped groove capable of accommodating annular steel bars is opened in the steel bar fixing piece, the inner wall of the arc-shaped groove is in contact with the outer wall of the annular steel bars, and the bottom of the steel bar fixing piece is fixedly connected to the base, the number of the steel bar fixing pieces is not less than one, and the multiple steel bar fixing pieces are connected by broken line steel bars.

[0009] Preferably, the support assembly includes an upper fixed seat, a lower fixed seat and a support column. The upper fixed seat is connected to the lower fixed seat through the support column. A bag body is also connected between the upper fixed seat and the lower fixed seat, and the bag body is covered on the outside of the support column. The upper fixed seat is fixedly connected to the bottom of the support seat, and the bottom of the feed pipe penetrates longitudinally into the upper fixed seat.

[0010] Preferably, a conical feed seat is provided in the casting layer, and a screw groove is opened at the bottom of the conical feed seat, a thread is provided on the outer wall of the top of the feed pipe, and the top of the feed pipe is screwed into the screw groove in the conical feed seat.

[0011] The method for installing a stator mounting platform structure in a hydro-generator pit comprises the following steps:

[0012] Step 1: First, place the support assembly into the support pit reserved in the ground, screw the conical feed seat onto the feed pipe, and inject grouting cement into the support assembly through the feed pipe. The grouting cement enters the bag and props up the bag. At the same time, it is connected to the support column, and the support assembly is fixed in the support pit, and the support seat is fixed;

[0013] Step 2: Align the insert on the support base with the slot in the base, install the base on the support base, pass one end of the circular steel bar through the through slot and weld it to the other end of the circular steel bar, place the welded circular steel bar into the circular groove on the base, weld the steel bar fixing piece to the base to fix the circular steel bar, and weld multiple steel bar fixing pieces through the broken line steel bar at the same time;

[0014] Step 3: Pass one end of the transverse beam reinforcement through the through slot three in the insert and weld it to the circular plate. Extend the other end of the transverse beam reinforcement and bury it in the soil. Finally, pour the casting layer on the base so that the casting layer covers the annular steel bar, circular plate, transverse beam reinforcement, and insert to form an overall installation platform.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) The present invention can tightly connect the plug and the base through the annular steel bars, provide longitudinal support to the base through the support assembly under the plug, and provide transverse support to the base through the transverse beam bars, so that the base is more stable when subjected to bidirectional forces, and can provide a good installation environment for the hydro-generator.

[0017] 2) The present invention not only supports the base through the support assembly, but also facilitates to improve construction efficiency during actual construction. It is used in conjunction with the base. The base is prefabricated. The combination of the two can increase the installation speed, shorten the installation period, and save engineering time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the ring steel bar structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the broken line steel bar and the steel bar fixing member of the present invention;

[0021] Figure 4 This is a schematic structural diagram of the conical feed seat of the present invention;

[0022] Figure 5 It is a schematic diagram of the support assembly structure of the present invention.

[0023] In the figure: 1. Casting layer; 2. Base; 3. Transverse beam reinforcement; 4. Support seat; 5. Support inclined beam; 6. Support assembly; 7. Insert block; 8. Ring reinforcement; 9. Circular plate; 10. Second through slot; 11. Feed pipe; 12. Rebar fixing piece; 13. Broken line reinforcement; 14. First through slot; 15. Conical feed seat; 16. Upper fixing seat; 17. Support column; 18. Lower fixing seat; 19. Bag body; 20. Circular steel body. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0026] Example:

[0027] See also Figure 1-5The present invention provides a technical solution: a stator installation platform structure in a pit of a hydro-turbine generator, comprising a base 2 and a casting layer 1 covering the top of the base 2, wherein a slot is longitudinally provided in the base 2, and a support seat 4 is provided at the bottom of the base 2, an insert block 7 is provided at the top of the support seat 4, and the insert block 7 is inserted in the slot, a through groove 14 is transversely provided in the insert block 7, and an annular groove is provided at the top of the base 2, an annular steel bar 8 is provided in the annular groove, and the annular steel bar 8 is passed through the through groove 14, a support assembly 6 is provided at the bottom of the support seat 4, and a feed pipe 11 is provided at the top of the support assembly 6, and the feed pipe 1 1 longitudinally penetrates the plug block 7 and extends upward. The plug block 7 and the base 2 can be tightly connected by the annular steel bar 8. The support assembly 6 below the plug block 7 can provide longitudinal support to the base 2. At the same time, the transverse beam reinforcement 3 can provide transverse support to the base 2, making the base 2 more stable when subjected to bidirectional forces, and providing a good installation environment for the hydro-generator. The support assembly 6 not only supports the base 2, but also facilitates the improvement of construction efficiency during actual construction. It is used in conjunction with the base 2, which is prefabricated. The cooperation of the two can increase the installation speed, shorten the installation period, and save engineering time.

[0028] A circular plate 9 is provided in the middle of the top of the base 2 , and longitudinal through grooves 10 are provided in the middle of the circular plate 9 and the middle of the base 2 . A circular steel body 20 is provided in the circular plate 9 .

[0029] A through slot three for the transverse beam 3 is transversely opened in the insert block 7, and the transverse beam 3 is transversely inserted in the through slot three. One end of the transverse beam 3 passes through the through slot three and is fixedly connected to the circular steel body 20 in the circular plate body 9, and the other end of the transverse beam 3 extends outward.

[0030] A supporting oblique beam 5 is provided on the side wall of the supporting seat 4 , and one end of the supporting oblique beam 5 which is away from the supporting seat 4 is fixedly connected to the bottom of the base 2 .

[0031] A steel bar fixing part 12 is provided on the top of the base 2, and an arc-shaped groove capable of accommodating the annular steel bar 8 is opened in the steel bar fixing part 12. The inner wall of the arc-shaped groove fits the outer wall of the annular steel bar 8, and the bottom of the steel bar fixing part 12 is fixedly connected to the base 2. The number of the steel bar fixing parts 12 is not less than one, and multiple steel bar fixing parts 12 are connected by broken line steel bars 13, which can improve the stability of the annular steel bar 8.

[0032] The support assembly 6 includes an upper fixed seat 16, a lower fixed seat 18 and a support column 17. The upper fixed seat 16 is connected to the lower fixed seat 18 through the support column 17. A bag body 19 is also connected between the upper fixed seat 16 and the lower fixed seat 18, and the bag body 19 is covered on the outside of the support column 17. The upper fixed seat 16 is fixedly connected to the bottom of the support seat 4, and the bottom of the feed pipe 11 longitudinally penetrates into the upper fixed seat 16.

[0033] A conical feed seat 15 is provided in the casting layer 1 , and a screw groove is provided at the bottom of the conical feed seat 15 . A thread is provided on the outer wall of the top of the feed pipe 11 , and the top of the feed pipe 11 is screwed into the screw groove in the conical feed seat 15 .

[0034] The method for installing the stator mounting platform structure in the turbine generator pit includes the following steps:

[0035] Step 1: First, place the support assembly 6 into the support pit reserved in the ground, screw the conical feed seat 15 onto the feed pipe 11, and inject grouting cement into the support assembly 6 through the feed pipe 11. The grouting cement enters the bag body 19 and props up the bag body 19, and at the same time connects it to the support column 17, fixes the support assembly 6 in the support pit, and fixes the support seat 4;

[0036] Step 2: Align the insert 7 on the support base 4 with the slot in the base 2, install the base 2 on the support base 4, pass one end of the annular steel bar 8 through the through slot 14 and weld it to the other end of the annular steel bar 8, place the welded annular steel bar 8 into the annular groove on the base 2, weld the steel bar fixing piece 12 to the base 2 to fix the annular steel bar 8, and weld multiple steel bar fixing pieces 12 through the broken line steel bar 13;

[0037] Step 3: Pass one end of the transverse beam reinforcement 3 through the through slot 3 in the insert 7 and weld it to the circular plate 9. Extend the other end of the transverse beam reinforcement 3 and bury it in the soil. Finally, pour the casting layer 1 on the base 2 so that the casting layer 1 covers the annular steel bar 8, the circular plate 9, the transverse beam reinforcement 3, and the insert 7 to form an overall installation platform.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure signs in the claims should not be regarded as limiting the claims involved.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A stator mounting platform structure in a hydro-turbine generator pit, comprising a base (2) and a casting layer (1) covering the top of the base (2), characterized in that: A slot is longitudinally provided in the base (2), and a support seat (4) is provided at the bottom of the base (2), an insert block (7) is provided at the top of the support seat (4), and the insert block (7) is inserted in the slot, a through groove (14) is transversely provided in the insert block (7), and an annular groove is provided at the top of the base (2), an annular steel bar (8) is provided in the annular groove, and the annular steel bar (8) is passed through the through groove (14), a support assembly (6) is provided at the bottom of the support seat (4), and a feed pipe (11) is provided at the top of the support assembly (6), and the feed pipe (11) passes through the insert block (7) longitudinally and extends upward.

2. The stator installation platform structure in the pit of a hydro-generator according to claim 1, characterized in that: A circular plate body (9) is provided in the middle of the top of the base (2), and two through grooves (10) are longitudinally opened in the middle of the circular plate body (9) and the middle of the base (2), and a circular steel body (20) is provided in the circular plate body (9).

3. The stator installation platform structure in the pit of a hydro-generator according to claim 2, characterized in that: A through slot three for the transverse beam reinforcement (3) is transversely opened in the insert block (7), and the transverse beam reinforcement (3) is transversely inserted into the through slot three. One end of the transverse beam reinforcement (3) passes through the through slot three and is fixedly connected to the circular steel body (20) in the circular plate body (9), and the other end of the transverse beam reinforcement (3) extends outward.

4. The stator installation platform structure in the pit of a hydro-generator according to claim 1, characterized in that: A supporting inclined beam (5) is provided on the side wall of the supporting seat (4), and the end of the supporting inclined beam (5) facing away from the supporting seat (4) is fixedly connected to the bottom of the base (2).

5. The stator installation platform structure in the pit of a hydro-generator according to claim 1, characterized in that: A steel bar fixing piece (12) is provided on the top of the base (2), and an arc-shaped groove capable of accommodating an annular steel bar (8) is provided in the steel bar fixing piece (12), the inner wall of the arc-shaped groove is in contact with the outer wall of the annular steel bar (8), and the bottom of the steel bar fixing piece (12) is fixedly connected to the base (2), the number of the steel bar fixing piece (12) is not less than one, and the plurality of steel bar fixing pieces (12) are connected by broken line steel bars (13).

6. The stator installation platform structure in the pit of a hydro-generator according to claim 1, characterized in that: The support assembly (6) comprises an upper fixing seat (16), a lower fixing seat (18) and a support column (17); the upper fixing seat (16) is connected to the lower fixing seat (18) via the support column (17); a bag body (19) is further connected between the upper fixing seat (16) and the lower fixing seat (18), and the bag body (19) is wrapped around the outside of the support column (17); the upper fixing seat (16) is fixedly connected to the bottom of the support seat (4), and the bottom of the feed pipe (11) longitudinally penetrates into the upper fixing seat (16).

7. The stator installation platform structure in the pit of a hydro-generator according to claim 6, characterized in that: A conical feed seat (15) is provided in the casting layer (1), and a screw groove is provided in the lower part of the conical feed seat (15); a thread is provided on the outer wall of the top of the feed pipe (11), and the top of the feed pipe (11) is screwed into the screw groove in the conical feed seat (15).

8. A method for installing a stator mounting platform structure in a hydro-generator pit according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: First, place the support assembly (6) into a support pit reserved in the ground, screw the conical feed seat (15) onto the feed pipe (11), and inject grouting cement into the support assembly (6) through the feed pipe (11). The grouting cement enters the bag body (19) and props up the bag body (19), and is connected to the support column (17) at the same time. The support assembly (6) is fixed in the support pit and the support seat (4) is fixed; Step 2: Align the insert (7) on the support seat (4) with the slot in the base (2), install the base (2) on the support seat (4), pass one end of the annular steel bar (8) through the through slot (14) and weld it to the other end of the annular steel bar (8), place the welded annular steel bar (8) into the annular groove on the base (2), weld the steel bar fixing piece (12) to the base (2) to fix the annular steel bar (8), and simultaneously weld multiple steel bar fixing pieces (12) through the broken line steel bar (13); Step 3: One end of the transverse beam reinforcement (3) is passed through the through slot 3 in the insert (7) and welded to the circular plate (9), and the other end of the transverse beam reinforcement (3) is extended and buried in the soil. Finally, the casting layer (1) is cast on the base (2), so that the casting layer (1) covers the annular steel bar (8), the circular plate (9), the transverse beam reinforcement (3), and the insert (7), forming an integral installation platform.

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