Hole protection device applied to upper portion of rotor of large hydro-generator

Abstract

The utility model provides a protection device applied to a hole above a rotor of a large hydro-generator, which comprises a cover plate body, handle mounting holes are symmetrically arranged on the cover plate body, cover plate handles are fixedly mounted at the positions of the handle mounting holes, and the cover plate handles are positioned on the top end surface of the cover plate body. The bottom end face of the cover plate body is provided with a limiting structure used for being matched with the interior of the hole. The large head end of the cover plate body is provided with an edge folding structure. The device can effectively perform safety protection on the hole above the rotor during the unit maintenance period, prevents the situation that a constructor misses the step and falls, further effectively improves the safety level of a maintenance operation site during the unit maintenance period, and guarantees the personal safety of the maintainer.

Description

Technical Field

[0001] This utility model relates to the field of water turbine maintenance technology, specifically a protective device for holes above the rotor of a large water turbine generator. Background Technology

[0002] In the maintenance work environment of hydro-generator sets, the holes above the rotor lack effective sealing measures, which may cause a series of safety problems when maintenance work is carried out above the rotor, such as personnel stepping into the hole and falling, and parts falling.

[0003] When carrying out maintenance work above the rotor, the traditional method is to lay a safety net above the hole. This method has the following disadvantages: the safety net can only be hung with bolts, which are easy to fall off, and there are gaps in the safety net; after the safety net is laid, the construction workers in this area can still easily step into the gap. Although it can prevent people from falling, it also poses a risk of injury. Utility Model Content

[0004] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a protective device for holes above the rotor of a large hydro-generator. This device can effectively protect the holes above the rotor during unit maintenance, prevent construction workers from falling into the hole, and thus effectively improve the safety level of the maintenance site during unit maintenance and ensure the personal safety of maintenance personnel.

[0005] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: a protective device for holes above the rotor of a large hydro-generator, including a cover plate body, symmetrically provided handle mounting holes on the cover plate body, a cover plate handle fixedly installed at the position of the handle mounting hole, the cover plate handle being located on the top surface of the cover plate body, and a limiting structure for cooperating with the inside of the hole being provided on the bottom surface of the cover plate body.

[0006] The larger end of the cover plate body is provided with a folded edge structure.

[0007] The cover plate body is made of aluminum alloy patterned plate material;

[0008] The cover handle is located on the patterned surface; the limiting structure is located on the smooth surface.

[0009] The folded edge structure faces the surface where the limiting structure is located.

[0010] The cover plate body adopts a trapezoidal structure as a whole, and the external dimensions of the cover plate body match the size of the hole above the generator rotor.

[0011] The cover handle is fixedly connected to the cover body by rivets.

[0012] The limiting structure includes a first crossbar and a second crossbar fixed parallel to each other on the bottom end face of the cover plate body, and a vertical bar is vertically fixed at the middle part of the first crossbar and the second crossbar.

[0013] The first horizontal bar, the second horizontal bar, and the vertical bar are all made of channel steel.

[0014] It also includes a cover storage box for storing the cover body;

[0015] The cover storage box includes a box frame, with first side plates symmetrically fixed to the left and right sides of the top of the box frame, and second side plates symmetrically fixed to the front and rear sides of the top of the box frame. The first and second side plates form a rectangular box, with a top cover on the top of the rectangular box and multiple sets of supporting beams on the bottom of the rectangular box.

[0016] The bottom four corners of the box frame are equipped with casters.

[0017] A handle is installed on the upper outer wall of the first side panel.

[0018] The present invention has the following beneficial effects:

[0019] 1. This utility model device can effectively protect the holes above the rotor during unit maintenance, preventing construction personnel from falling into the hole, thereby effectively improving the safety level of the maintenance site and ensuring the personal safety of maintenance personnel.

[0020] 2. The structural design of this utility model is closely related to the overall structure of the hole above the rotor. It utilizes the actual structure of the equipment on site and can be perfectly applied without changing any other equipment.

[0021] 3. The connection between the cover plate body and the handle of this utility model adopts a riveting connection, which avoids the potential risks of traditional bolt connections, such as bolts and nuts falling off and being left in the wind tunnel, causing equipment damage.

[0022] 4. The cover plate of this utility model has an anti-slip function while covering the holes.

[0023] 5. The above-mentioned cover storage box can be used to effectively store the cover body. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a plan view of the cover plate body of this utility model.

[0026] Figure 2This is a side view of the cover plate body of this utility model.

[0027] Figure 3 For the present utility model Figure 2 Enlarged view of part of D.

[0028] Figure 4 This is a first-view 3D view of the cover plate body of this utility model.

[0029] Figure 5 This is a second-view three-dimensional view of the cover plate body of this utility model.

[0030] Figure 6 This is a first-view 3D view of the cover storage box of this utility model.

[0031] Figure 7 This is a second-view 3D view of the cover storage box of this utility model.

[0032] Figure 8 This is a third-person 3D view of the storage box with the top cover removed, according to the present invention.

[0033] In the diagram: 1. Cover plate body, 2. Handle mounting hole, 3. Vertical rod, 4. Second horizontal rod, 5. Folded edge structure, 6. First horizontal rod, 7. Rivet, 8. Cover plate handle, 9. Box frame, 10. Foot roller, 11. First side plate, 12. Box handle, 13. Top cover, 14. Second side plate, 15. Support beam. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1:

[0036] like Figure 1-8As shown, a protective device for holes above the rotor of a large hydro-generator includes a cover plate body 1. Handle mounting holes 2 are symmetrically arranged on the cover plate body 1. A cover plate handle 8 is fixedly installed at the location of the handle mounting holes 2, and the cover plate handle 8 is located on the top surface of the cover plate body 1. A limiting structure for engaging with the interior of the hole is provided on the bottom surface of the cover plate body 1. A folded edge structure 5 is provided at the larger end of the cover plate body 1. This device can effectively protect the holes above the rotor during unit maintenance, preventing workers from falling through gaps, thereby effectively improving the safety level of the maintenance work site and ensuring the personal safety of maintenance personnel. In practical use, by setting the limiting structure at the location of the hole and covering the hole with the entire cover plate body 1, a good protective effect is achieved.

[0037] Furthermore, the cover plate body 1 is made of aluminum alloy patterned plate material; by using the above-mentioned plate material, its structure is simplified, the processing difficulty is reduced, and the patterned plate also provides an anti-slip effect.

[0038] Furthermore, the cover handle 8 is located on the patterned surface; the limiting structure is located on the smooth surface. The cover handle 8 facilitates the subsequent overall handling and installation of the cover body 1.

[0039] Furthermore, the folded edge structure 5 faces the surface where the limiting structure is located. The aforementioned folded edge structure 5 facilitates close contact with the outer edge of the turbine generator rotor top cover, thereby ensuring the reliability of the cover plate body 1's fixation.

[0040] Furthermore, the cover plate body 1 adopts a trapezoidal structure, and its external dimensions match the size of the hole above the generator rotor. By adopting the above-mentioned dimensions, complete coverage of the hole can be ensured, thereby guaranteeing the safety and reliability of the protection.

[0041] Furthermore, the size perfectly covers the holes and has a load-bearing capacity of over 200Kg, with a non-slip surface.

[0042] Furthermore, the cover handle 8 is fixedly connected to the cover body 1 by rivets 7. This fixing method ensures the reliability of the cover handle 8's installation and fixation.

[0043] Furthermore, the limiting structure includes a first horizontal bar 6 and a second horizontal bar 4 fixed parallel to the bottom end face of the cover plate body 1, with a vertical bar 3 vertically fixed at the middle part of the first horizontal bar 6 and the second horizontal bar 4. This limiting structure effectively restricts the sliding of the cover plate above the hole, and the outer dimensions of the I-shaped fixing device perfectly match the hole.

[0044] Furthermore, the first horizontal bar 6, the second horizontal bar 4, and the vertical bar 3 are all made of channel steel. The use of channel steel simplifies the structure.

[0045] Example 2:

[0046] Since the holes above the turbine generator rotor are evenly arranged in a circle and there are many of them, in order to facilitate the subsequent overall handling and storage, a cover plate storage box is also involved to store the cover plate body 1.

[0047] Furthermore, the cover storage box includes a box frame 9, with first side plates 11 symmetrically fixed on the left and right sides of the top of the box frame 9, and second side plates 14 symmetrically fixed on the front and rear sides of the top of the box frame 9. The first side plates 11 and the second side plates 14 form a rectangular box, with a top cover 13 on the top of the rectangular box and multiple sets of supporting beams 15 on the bottom of the rectangular box.

[0048] Furthermore, the bottom four corners of the box frame 9 are provided with casters 10.

[0049] Furthermore, a box handle 12 is installed on the upper outer wall of the first side plate 11.

[0050] The working process and principle of this utility model:

[0051] First, the cover plate storage box containing the cover plate body 1 is moved to the top of the turbine generator rotor. Then, the cover plate body 1 is taken out and placed in the position of the hole using the cover plate handle 8. During placement, the limiting structure is matched with the hole, effectively restricting the sliding of the cover plate above the hole. The outer dimensions of the I-shaped fixing device are perfectly matched with the hole. The hole is then protected by the cover plate body 1. After maintenance is completed, the cover plate body 1 is removed and stored inside the cover plate storage box for future use.

Claims

1. A protective device for holes above the rotor of a large hydro-generator, characterized in that, Includes a cover plate body (1), on which handle mounting holes (2) are symmetrically arranged, and a cover plate handle (8) is fixedly installed at the location of the handle mounting hole (2). The cover plate handle (8) is located on the top surface of the cover plate body (1), and a limiting structure for cooperating with the inside of the hole is provided on the bottom surface of the cover plate body (1). The large end of the cover plate body (1) is provided with a folded edge structure (5).

2. The protective device for holes above the rotor of a large hydro-generator according to claim 1, characterized in that: The cover plate body (1) is made of aluminum alloy patterned plate material; The cover handle (8) is located on the patterned surface; the limiting structure is located on the smooth surface. The folded edge structure (5) faces the surface where the limiting structure is located.

3. The protective device for holes above the rotor of a large hydro-generator according to claim 2, characterized in that: The cover plate body (1) adopts a trapezoidal structure as a whole, and the external dimensions of the cover plate body (1) match the size of the hole above the generator rotor.

4. The protective device for holes above the rotor of a large hydro-generator according to claim 1, characterized in that: The cover handle (8) is fixedly connected to the cover body (1) by rivets (7).

5. The protective device for holes above the rotor of a large hydro-generator according to claim 1, characterized in that: The limiting structure includes a first crossbar (6) and a second crossbar (4) fixed parallel to the bottom end face of the cover plate body (1), and a vertical bar (3) is vertically fixed in the middle part of the first crossbar (6) and the second crossbar (4).

6. The protective device for holes above the rotor of a large hydro-generator according to claim 1, characterized in that: The first horizontal bar (6), the second horizontal bar (4), and the vertical bar (3) are all made of channel steel.

7. The protective device for holes above the rotor of a large hydro-generator according to claim 1, characterized in that: It also includes a cover plate storage box for storing the cover plate body (1); The cover storage box includes a box frame (9), with first side plates (11) symmetrically fixed on the left and right sides of the top of the box frame (9), and second side plates (14) symmetrically fixed on the front and rear sides of the top of the box frame (9). The first side plates (11) and the second side plates (14) form a rectangular box. The top of the rectangular box is provided with a top cover (13), and the bottom of the rectangular box is provided with multiple sets of supporting beams (15).

8. The protective device for holes above the rotor of a large hydro-generator according to claim 7, characterized in that: The bottom four corners of the box frame (9) are provided with casters (10).

9. The protective device for holes above the rotor of a large hydro-generator according to claim 7, characterized in that: A box handle (12) is installed on the upper outer wall of the first side plate (11).

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