Liftable air deflector of large water-turbine generator set

Abstract

The invention discloses a lifting type air deflector of a large water-turbine generator set, which comprises an air deflector unit, a mounting table, an air baffle arranged at the mounting table, and a U-shaped hoop arranged on the air baffle. The lifting unit comprises a jack arranged on the mounting table, a supporting assembly arranged on the jack and a fixing assembly. The supporting unit comprises a support assembly arranged on the mounting table, a supporting rod assembly arranged on the support assembly and a connecting assembly arranged on the wind shield. According to the lifting type air deflector of the large water-turbine generator set, the air deflector is disassembled and supported, lifting of the air deflector can be completed in a narrow space, the overhaul period is shortened, and potential safety hazards of operators are eliminated. The adjustable structural form that the whole wind shield can be positioned, guided, synchronously lifted and safely locked in the whole stroke is provided and implemented, the dynamic adjustable and static locking functions of the wind shield are established, and the cooling air volume of the air cooler of the hydraulic generator is controllable.

Description

Technical Field

[0001] The invention relates to the technical field of wind guide devices, and in particular to a liftable wind guide plate of a large-scale water turbine generator set. Background Art

[0002] The generator adopts a closed, self-circulating, fanless, dual-path ventilation method. Fixed wind guide plates (also called wind shields) are installed at the upper and lower ends of the stator. The lower wind guide plate is composed of 30 pieces (each weighing about 35kg) to form a complete circle. Each wind guide plate is connected with 9 sets of M20×60 stainless steel bolts.

[0003] The wind deflector of the current generator is fixedly installed, and the lower wind deflector is only 500mm above the ground. The space is too narrow, and the workers must kneel or lie on the ground to dismantle it. The work is difficult and inconvenient, and it takes a lot of manpower and time. The dismantling and inspection work cannot be completed in the non-maintenance state. Therefore, in the non-maintenance state, the operation of the stator, the lower end of the rotor, and the air gap covered by the wind deflector has always been the inspection dead zone of the Goupitan Power Plant. If there is an abnormal sound at the lower end of the running generator, it cannot be checked in time. In addition, during maintenance, the stress changes caused by repeated disassembly of the wind deflector and the wind deflector assembly cause the connection seam to deform and crack, which seriously shortens the service life of the wind deflector and buries a huge safety hazard for the running generator. Summary of the invention

[0004] In view of the problems that the liftable wind guide plate of the above-mentioned existing large-scale hydro-turbine generator set is inconvenient to disassemble and repair, and is prone to deformation, the present invention is proposed.

[0005] Therefore, the present invention provides a liftable wind deflector for a large hydro-turbine generator set, the purpose of which is to solve the technical problems that the existing wind deflectors are difficult to disassemble and repair and are prone to deformation.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: comprising an air guide plate unit, a lifting unit, and a supporting unit.

[0007] The wind deflector unit includes a mounting platform, a wind shield plate arranged on the mounting platform, and a U-shaped clamp arranged on the wind shield plate.

[0008] The lifting unit comprises a jack arranged on the mounting platform, a supporting component arranged on the jack, and a fixing component arranged on the bottom surface of the windshield.

[0009] The support unit comprises a support assembly arranged on the mounting platform, a support rod assembly arranged on the support assembly, and a connection assembly arranged on the windshield.

[0010] As a preferred solution of the liftable wind deflector of the large hydro-turbine generator set described in the present invention, the support assembly includes a threaded rod arranged on the jack, and a nut arranged on the threaded rod.

[0011] As a preferred solution of the liftable wind guide plate of the large hydro-turbine generator set described in the present invention, the fixing component includes a connecting plate and a connecting block arranged on the connecting plate.

[0012] As a preferred solution of the liftable wind guide plate of the large hydro-generator set described in the present invention, the connecting plate is a U-shaped plate.

[0013] As a preferred solution of the liftable wind guide plate of the large hydro-turbine generator set described in the present invention, the support assembly includes a column arranged on the mounting platform, a locking member detachably arranged on the column, and a rotating plate movably arranged on the column.

[0014] As a preferred solution of the liftable wind guide plate of the large hydro-generator set described in the present invention, the rotating plate is provided with a through hole for the support rod assembly to pass through.

[0015] As a preferred solution of the liftable wind deflector of the large hydro-generator set described in the present invention, the support rod assembly includes a threaded straight rod passing through the through hole, and a locking portion arranged on the threaded straight rod.

[0016] As a preferred solution of the liftable wind guide plate of the large hydro-turbine generator set described in the present invention, the threaded straight rod is a full-thread screw.

[0017] As a preferred solution of the liftable wind guide plate of the large hydro-turbine generator set described in the present invention, the full-thread screw is M20*850, and the through hole is Φ25.

[0018] As a preferred solution of the liftable wind guide plate of the large hydro-turbine generator set described in the present invention, the connecting assembly includes a vertical plate arranged on the wind shield plate, a horizontal plate arranged on the vertical plate, and a mounting block arranged on the horizontal plate and connected to the wind shield plate.

[0019] The beneficial effects of the present invention are as follows: an air guide plate unit, a lifting unit, and a supporting unit are provided to realize the disassembly and support of the wind shield plate, and the lifting and lowering of the wind shield plate can be completed in a narrow space, thereby shortening the maintenance period and eliminating the safety hazards of operators.

[0020] Through the coordination of the lifting unit and the supporting unit, an adjustable structural form with overall positioning guidance, synchronous lifting and full-stroke safety locking of the wind shield is proposed and implemented, the functions of dynamic adjustment and static locking of the wind shield are established, and the cooling air volume of the turbine generator air cooler can be controlled.

[0021] For the first time in China and abroad, the application of liftable wind guide plates for large-scale hydro-turbine generator sets has been realized. In the past, after the wind shield was installed, it could only be inspected after dismantling the wind shield during maintenance. Now it has been changed to a liftable type. During regular inspections of the rotating parts, the wind shield can be dropped for inspection, which solves the problem that the internal operation of the generator wind shield cannot be inspected when not in maintenance state, and the rotating part of the hydro-turbine generator blocked by the wind shield can be inspected without blind spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the lifting unit in the second embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the support unit in the second embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the support assembly in the third embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Example 1, reference Figure 1-3 , which is the first embodiment of the present invention, provides a liftable wind deflector for a large hydro-turbine generator set, and the device includes a wind deflector unit 100, a lifting unit 200, and a support unit 300. The lifting unit 200 cooperates with the support unit 300, and when the lifting unit 200 releases the support lock of the wind deflector unit 100, it can drive the support unit 300 to descend together, so that the lifting unit 200 and the support unit 300 can jointly drive the wind deflector unit 100 to move downward stably, which is convenient for disassembly of the wind deflector unit 100. At the same time, the shape of the wind deflector unit 100 is protected, and the deformation and cracking of the connection of the wind deflector unit 100 due to gravity during the disassembly process are avoided. The wind deflector unit 100 is protected, which is conducive to extending the service life of the wind deflector unit 100, and the generator set can operate safely.

[0032] Among them, the wind guide plate unit 100 includes a mounting platform 101, a wind shield 102 arranged on the mounting platform 101, and a U-shaped clamp 103 arranged on the wind shield 102; there are multiple wind shields 102, and the multiple wind shields 102 are installed side by side on the mounting platform 101 to form an air guide channel; the U-shaped clamp 103 is installed on one side of the multiple wind shields 102, and is used to limit and fix the multiple wind shields 102, and belongs to the prior art. Before disassembling the multiple wind shields 102, the U-shaped clamp 103 is first removed.

[0033] The lifting unit 200 includes a jack 201 disposed on the mounting platform 101, a support assembly 202 disposed on the jack 201, and a fixing assembly 203 disposed on the bottom surface of the windshield 102; and the support assembly 202 is mounted on the fixing assembly 203, and the height of the fixing assembly 203 and the windshield 102 can be adjusted by adjusting the support assembly 202 by the jack 201, and the installation of the windshield 102 can be supported and adjusted, so as to facilitate the disassembly and maintenance of the windshield 102. The maximum lifting height of the jack 201 is 395 mm, and the descending height can be adjusted at any time, and the height can be maintained unchanged, which solves the problem that the disassembly space of the windshield 102 is small, which makes the work difficult, time-consuming and labor-intensive, and maximizes the use of the small space to complete the lifting and lowering of the windshield 102, shortens the maintenance period, and eliminates the safety hazards of the operators.

[0034] The support unit 300 includes a support assembly 301 disposed on the mounting platform 101, a support rod assembly 302 disposed on the support assembly 301, and a connection assembly 303 disposed on the windshield 102. The support rod assembly 302 is supported and adjusted by the support assembly 301, and the height of the windshield 102 can be adjusted and supported by the cooperation between the connection assembly 303 and the support rod assembly 302.

[0035] During use, the U-shaped clamp 103 is first released to limit the wind shield 102, and then the limit between the support rod assembly 302 and the support assembly 301 is contacted, and finally the lifting unit 200 and the support unit 300 are adjusted to drive the wind shield 102 to descend, thereby realizing the disassembly and support of the wind shield 102. The wind shield 102 can be lifted and lowered in a narrow space, shortening the maintenance period and eliminating safety hazards for operators.

[0036] Example 2, reference Figure 1-3 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: it is the first time in China and abroad that a lifting wind guide plate is applied to a large-scale hydro-turbine generator set, which solves the problem that after the wind shield 102 is installed, it can only be inspected after the wind shield 102 is disassembled during maintenance. Now it is changed to a liftable type, and the wind shield 102 is dropped for inspection during regular inspection of the rotating part, which solves the problem that the internal operation of the generator wind shield 102 cannot be inspected in the non-maintenance state, and the rotating part of the hydro-turbine generator blocked by the wind shield 102 can be inspected without blind spots.

[0037] Compared with the first embodiment, the support assembly 202 further includes a threaded rod 202a disposed on the jack 201 and a nut 202b disposed on the threaded rod 202a. Two nuts 202b are provided, and the two nuts 202b are clamped on the fixing assembly 203 up and down, thereby achieving the cooperation between the support assembly 202 and the fixing assembly 203.

[0038] Preferably, the fixing assembly 203 includes a connecting plate 203a and a connecting block 203b disposed on the connecting plate 203a. The connecting block 203b is mounted on the windshield 102 to fix the fixing assembly 203 to the windshield 102.

[0039] Furthermore, the connecting plate 203a is a U-shaped plate, which can facilitate the matching installation of the nut 202b.

[0040] In particular, the support assembly 301 includes a column 301a disposed on the mounting platform 101, a locking member 301b detachably disposed on the column 301a, and a rotating plate 301c movably disposed on the column 301a. The column 301a is a bolt, and the locking member 301b is a locking nut. The locking nut cooperates with the bolt to achieve the positional fixation of the rotating plate 301c, thereby fixing the position of the rotating plate 301c.

[0041] The remaining structures are the same as those of Example 1.

[0042] Example 3, reference Figure 1-4 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: through the cooperation of the lifting unit 200 and the supporting unit 300, an adjustable structural form of the wind shield 102 with overall positioning guidance, synchronous lifting, and full-stroke safety locking is proposed and implemented, and the functions of dynamic adjustment and static locking of the wind shield 102 are established, so that the cooling air volume of the turbine generator air cooler can be controlled.

[0043] Compared with the embodiment 2, further, the rotating plate 301c is provided with a through hole 301d for the support rod assembly 302 to pass through. The lower end of the support rod assembly 302 fits through the through hole 301d, and the support rod assembly 302 can be stably mounted on the rotating plate 301c, and the rotating plate 301c stably supports the support rod assembly 302 and the connecting assembly 303;

[0044] Preferably, the support rod assembly 302 includes a threaded straight rod 302a passing through the through hole 301d, and a locking portion 302b disposed on the threaded straight rod 302a. The locking portion 302b is provided with two groups, and the two groups of locking portions 302b are respectively locked on the rotating plate 301c and the connecting assembly 303, and the locking portion 302b includes two matching nuts, and the rotating plate 301c is stably clamped from the upper and lower sides by the two matching nuts;

[0045] Furthermore, the threaded straight rod 302a is a full-thread screw. By setting the full-thread screw, the rotation and movement of the locking part 302b can be facilitated, and the full-thread screw can be adjusted in height in the vertical direction, and the full-thread screw can drive the connection component 303 and the windshield 102 to change in height through the movable setting.

[0046] In particular, the full-thread screw is M20*850, and the through hole 301d is Φ25. The diameter of the through hole 301d is greater than the diameter of the full-thread screw. Since the rotating plate 301c is rotatably arranged on the column 301a, the position of the through hole 301d can be adjusted by adjusting the position of the rotating plate 301c, so that the axis of the through hole 301d coincides with the central axis of the full-thread screw, so that the full-thread screw can pass through the through hole 301d during the descending process without bending.

[0047] Furthermore, the connecting assembly 303 includes a vertical plate 303a disposed on the windshield 102, a horizontal plate 303b disposed on the vertical plate 303a, and a mounting block 303c disposed on the horizontal plate 303b and connected to the windshield 102. A space is formed between the vertical plate 303a, the horizontal plate 303b and the lower end surface of the windshield 102 for mounting the locking portion 302b.

[0048] The remaining structure is the same as that of Example 2.

[0049] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0050] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A liftable wind deflector for a large hydro-generator set, characterized in that: include, A wind deflector unit (100) comprises a mounting platform (101), a wind shield (102) arranged on the mounting platform (101), and a (U)-shaped clamp (103) arranged on the wind shield (102); A lifting unit (200) comprises a jack (201) arranged on the mounting platform (101), a supporting assembly (202) arranged on the jack (201), and a fixing assembly (203) arranged on the bottom surface of the windshield (102); and, The support unit (300) comprises a support assembly (301) arranged on the mounting platform (101), a support rod assembly (302) arranged on the support assembly (301), and a connection assembly (303) arranged on the windshield (102).

2. The liftable wind deflector of a large hydro-generator set according to claim 1 is characterized in that: The support assembly (202) comprises a threaded rod (202a) arranged on the jack (201), and a nut (202b) arranged on the threaded rod (202a).

3. The liftable wind deflector of a large hydro-generator set according to claim 2 is characterized in that: The fixing assembly (203) comprises a connecting plate (203a) and a connecting block (203b) arranged on the connecting plate (203a).

4. The liftable wind deflector of a large hydroelectric generator set according to claim 3 is characterized in that: The connecting plate (203a) is a U-shaped plate.

5. The liftable wind deflector of a large hydroelectric generator set according to claim 4 is characterized in that: The support assembly (301) comprises a column (301a) arranged on the mounting platform (101), a locking member (301b) detachably arranged on the column (301a), and a rotating plate (301c) movably arranged on the column (301a).

6. The liftable wind deflector of a large hydroelectric generator set according to claim 5 is characterized in that: The rotating plate (301c) is provided with a through hole (301d) for the support rod assembly (302) to pass through.

7. The liftable wind deflector of a large hydroelectric generator set according to claim 6 is characterized in that: The support rod assembly (302) comprises a threaded straight rod (302a) passing through the through hole (301d), and a locking portion (302b) arranged on the threaded straight rod (302a).

8. The liftable wind deflector of a large hydroelectric generator set according to claim 7 is characterized in that: The threaded straight rod (302a) is a full-thread screw.

9. The liftable wind deflector of a large hydroelectric generator set according to claim 8 is characterized in that: The full-thread screw is M20*850, and the through hole (301d) is Φ25.

10. The liftable wind deflector of a large hydroelectric generator set according to claim 9 is characterized in that: The connection assembly (303) comprises a vertical plate (303a) arranged on the wind shield (102), a horizontal plate (303b) arranged on the vertical plate (303a), and a mounting block (303c) arranged on the horizontal plate (303b) and connected to the wind shield (102).

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