Folding protective cover plate suitable for interior of generator hydrogen cooler shell

Abstract

The utility model belongs to the technical field of generators, in particular to a folding protective cover plate suitable for a generator hydrogen cooler shell, which comprises a hydrogen cooler chamber shell and a hydrogen cooler body arranged in the hydrogen cooler chamber shell, and a cover plate assembly is arranged on the surface of the hydrogen cooler chamber shell; during maintenance, the cover plate body is unfolded and placed above the ventilation hole to shield the ventilation hole, foreign matter can be prevented from falling into the bottom of the generator through the ventilation hole, the cover plate body is closed stably, a worker can stand on the surface of the cover plate body to maintain the hydrogen cooler body, and the maintenance efficiency is improved; according to the hydrogen cooler, the hydrogen cooler body can be limited through the fixing hoop, the hydrogen cooler body can be conveniently mounted or dismounted, the influence of vibration generated by working of a power station on the hydrogen cooler body can be reduced through the buffer damping, and the service life of the hydrogen cooler body is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of generators, and in particular relates to a foldable protective cover plate suitable for a hydrogen cooler shell of a generator. Background Art

[0002] The hydrogen cooler is an important component of the hydrogen-cooled steam turbine generator. Its function is to cool the hydrogen in the closed cycle in the generator through heat exchange, so as to ensure the safe and stable operation of the generator. The two sets of hydrogen coolers of some domestic steam turbine generators are installed in the top semicircular chambers on both sides of the generator steam and excitation, like two humps, so this cooling structure is called a hump-type hydrogen-cooled generator. This type of hydrogen cooler is easy to inspect and disassemble, and has a good cooling effect, so it is often used in the design of large-capacity generators.

[0003] After checking the announcement number: CN206190336U discloses a steam turbine generator hydrogen cooler, and this technology discloses "including upper water chamber cover, tube sheet I, casing, sealing gasket I, hydrogen cooler, tube sheet II, lower water chamber cover, outer flange, inner flange, inlet and outlet pipes, lower water chamber rear cover and sealing gasket II. The device adds a lower water chamber rear cover structure to the lower water chamber cover and other technical solutions, and has the following technical effects: when the generator set is running at low valley, the device can handle the hydrogen cooler failure without stopping; compared with general hydrogen coolers, the device takes less time to handle hydrogen cooler failure; the thermal conductivity of the device is improved; the service life of the hydrogen cooler of the device is extended, etc.";

[0004] However, the existing hump-type hydrogen-cooled generator has a cooler installed on the top of the generator, and the internal space of the semicircular chamber on the top is small. The cooling wind tunnel of the hydrogen cooler has a large space that goes straight through the bottom of the iron core, and the bottom iron core welded dead space is very small. Once objects or parts fall down, it is difficult to take them out from the bottom, which poses a threat to the safe operation of the generator. Therefore, special care must be taken when repairing the hydrogen cooler of this type of generator, and plastic sheets, partitions, etc. are used for protection during maintenance, which is not only troublesome, but also has a poor protective effect and cannot completely prevent foreign objects from falling during maintenance.

[0005] In order to solve the above problems, the present application proposes a foldable protective cover suitable for use in a hydrogen cooler housing of a generator. Utility Model Content

[0006] To solve the problems raised in the above background technology, the utility model provides a foldable protective cover suitable for the hydrogen cooler shell of the generator, which can cover the ventilation holes during maintenance, effectively solve the problem of foreign matter falling into the bottom of the power generation, and facilitate maintenance by personnel, greatly improving maintenance efficiency.

[0007] To achieve the above object, the utility model provides the following technical solutions: a foldable protective cover plate suitable for use in a hydrogen cooler housing of a generator, comprising a hydrogen cooler chamber shell and a hydrogen cooler body installed inside the hydrogen cooler chamber shell, wherein a cover plate assembly is provided on the surface of the hydrogen cooler chamber shell;

[0008] The cover plate assembly includes a plurality of ventilation holes symmetrically arranged on the bottom surface of the hydrogen cooler chamber shell, a fixed block arranged above the ventilation holes, and connecting blocks symmetrically hinged on both sides of the fixed block through a hinge axis, and the surface of the connecting block is fixedly connected to the cover plate body.

[0009] As a preferred foldable protective cover plate suitable for the hydrogen cooler shell of a generator according to the utility model, a card block is fixedly connected to one side of the outer shell surface of the hydrogen cooler chamber close to the cover body, and a card slot matching the card block is opened on one side of the cover body close to the card block.

[0010] As a preferred foldable protective cover plate suitable for the hydrogen cooler housing of a generator according to the utility model, the interior of the fixed block is rotatably connected to a rotating rod through a bearing, the surface of the rotating rod is fixedly connected to an elliptical block, a rotating groove matching the elliptical block is provided on one side of the fixed block close to the elliptical block, one end of the rotating rod passes through the interior of the fixed block and is fixedly connected to a handle arranged on the outside of the fixed block.

[0011] As a preferred foldable protective cover plate suitable for the inside of a hydrogen cooler housing of a generator according to the utility model, a plurality of groups of heat-conducting fins arranged at equal distances are fixedly connected to the surface of the hydrogen cooler body.

[0012] As a preferred foldable protective cover plate suitable for the generator hydrogen cooler shell of the utility model, the surface of the hydrogen cooler body is symmetrically installed with inlet and outlet water pipes, and the surface of the hydrogen cooler chamber shell close to the inlet and outlet water pipes is fixedly connected with a sealing ring gasket.

[0013] As a preferred foldable protective cover plate suitable for the hydrogen cooler shell of a generator according to the utility model, a mounting assembly is arranged on the surface of the hydrogen cooler body, and the mounting assembly includes a fixing clamp symmetrically arranged on the surface of the hydrogen cooler body, a mounting plate installed on the bottom surface of the hydrogen cooler body, and a fixing plate arranged inside the hydrogen cooler chamber shell close to one side of the mounting plate, and the mounting plate is respectively connected to the fixing clamp and the fixing plate by bolts.

[0014] As a preferred foldable protective cover suitable for the hydrogen cooler housing of the generator of the utility model, a movable groove is provided on one side of the hydrogen cooler chamber shell close to the fixed plate, and a buffer damper is fixedly connected between the fixed plate and the hydrogen cooler chamber shell. Compared with the prior art, the beneficial effects of the utility model are: by setting a cover assembly, during maintenance, the cover body is unfolded and placed above the vent to block the vent, which can prevent foreign matter from falling into the bottom of the generator through the vent, and the cover body is closed stably so that the staff can stand on the surface of the cover body to inspect the hydrogen cooler body, thereby improving the maintenance efficiency. At the same time, an installation assembly is set, and the hydrogen cooler body can be limited by a fixed clamp, which is convenient for installing or disassembling the hydrogen cooler body, and the buffer damper can reduce the impact of vibration generated by the operation of the power station on the hydrogen cooler body, thereby improving the service life of the hydrogen cooler body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the cover plate body and the heat conducting fins in the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the worm wheel and the worm in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the mounting plate and the fixing plate in the utility model.

[0020] In the figure:

[0021] 1. Hydrogen cooler chamber shell; 2. Hydrogen cooler body;

[0022] 3. Cover plate assembly; 31. Heat conducting fins; 32. Fixing block; 33. Cover plate body; 34. Connecting block; 35. Ventilation hole; 36. Water inlet and outlet pipes; 37. Sealing ring; 38. Rotating rod; 39. Oval block; 310. Block;

[0023] 4. Installation assembly; 41. Fixing clamp; 42. Buffer damping; 43. Installation plate; 44. Fixing plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] like Figure 1 As shown:

[0027] A foldable protective cover plate suitable for use in a hydrogen cooler housing of a generator comprises a hydrogen cooler chamber shell 1 and a hydrogen cooler body 2 installed inside the hydrogen cooler chamber shell 1.

[0028] In this embodiment: the existing public (announcement) number: CN206190336U discloses a steam turbine generator hydrogen cooler; to solve the technical problems existing in this prior art, as disclosed in the background technology above, "but the existing hump-type hydrogen-cooled generator, its cooler is installed on the top of the generator, and the internal space of the top semicircular chamber is small, and the cooling wind tunnel space of the hydrogen cooler is large and passes directly to the bottom of the iron core, and the bottom iron core welding dead space is very small. Once objects or parts fall down, it is difficult to take them out from the bottom, posing a threat to the safe operation of the generator. Therefore, this type of generator hydrogen cooler must be repaired with special care, and plastic sheets, partitions, etc. are used for protection during maintenance, which is not only troublesome, but also has poor protection effect, and cannot completely prevent foreign objects from falling during maintenance." In terms of combined use, this problem is obviously a real problem that exists and is relatively difficult to solve. In view of this, in order to solve this technical problem, a cover assembly 3 and an installation assembly 4 are added to the application document.

[0029] More specifically:

[0030] like Figure 1-Figure 4 As shown:

[0031] In combination with the above content, the cover plate assembly 3 includes a plurality of ventilation holes 35 symmetrically opened on the bottom surface of the hydrogen cooler chamber shell 1, a fixed block 32 arranged above the ventilation holes 35, and a connecting block 34 symmetrically hinged on both sides of the fixed block 32 through a hinge axis, and the surface of the connecting block 34 is fixedly connected to the cover plate body 33.

[0032] In this embodiment: when the generator hydrogen cooler needs to be inspected, the cover body 33 is unfolded by flipping the two sets of connecting blocks 34, and then the unfolded cover body 33 is placed above the ventilation holes 35 to block the ventilation holes 35 to prevent foreign matter from falling into the bottom of the generator through the ventilation holes 35 during inspection. The cover body 33 is closed and stable, so that the staff can stand on the surface of the cover body 33 to inspect the hydrogen cooler body 2, thereby improving the inspection efficiency.

[0033] Going further:

[0034] like Figure 1-Figure 4 As shown:

[0035] In order to facilitate the locking of the cover body 33 when it is unfolded, in an optional embodiment: a block 310 is fixedly connected to the side of the hydrogen cooler chamber shell 1 close to the cover body 33, and a groove matching the block 310 is provided on the side of the cover body 33 close to the block 310; a rotating rod 38 is rotatably connected to the interior of the fixed block 32 through a bearing, an elliptical block 39 is fixedly connected to the surface of the rotating rod 38, and a rotating groove matching the elliptical block 39 is provided on the side of the fixed block 32 close to the elliptical block 39, one end of the rotating rod 38 passes through the interior of the fixed block 32 and is fixedly connected to a handle arranged on the outside of the fixed block 32; a plurality of groups of heat-conducting fins 31 arranged at equal distances are fixedly connected to the surface of the hydrogen cooler body 2; inlet and outlet water pipes 36 are symmetrically installed on the surface of the hydrogen cooler body 2, and a sealing ring gasket 37 is fixedly connected to the side of the surface of the hydrogen cooler chamber shell 1 close to the inlet and outlet water pipes 36.

[0036] In this embodiment, when the generator hydrogen cooler needs to be repaired, the cover body 33 is unfolded by flipping the two groups of connecting blocks 34, and then the card slot on the unfolded cover body 33 is aligned with the card block 310, and the cover body 33 is pressed to make the card block 310 snap into the card slot, and the ventilation hole 35 is blocked by the cover body 33, so that foreign matter can be prevented from falling into the bottom of the generator through the ventilation hole 35 during maintenance. At the same time, the rotating rod 38 is rotated by the handle to drive the elliptical block 39 to rotate, so that the two ends of the elliptical block 39 are against the cover body 33, and the cover body 33 is limited by the elliptical block 39, so that the stability of the cover body 33 is increased, so that the staff can stand on the surface of the cover body 33 to repair the hydrogen cooler body 2, thereby improving the maintenance efficiency. The sealing effect of the hydrogen cooler chamber shell 1 can be improved by the sealing ring gasket 37. After the maintenance is completed, the cover body 33 is removed to ensure the normal operation of the ventilation hole 35, and the two groups of cover bodies 33 are folded to facilitate the storage of the cover body 33.

[0037] It should be noted that: inspection doors are provided on both sides of the hydrogen cooler chamber shell 1, so as to facilitate entering the interior of the hydrogen cooler chamber shell 1 through the inspection doors and carrying out inspection work on the hydrogen cooler body 2; the cover body 33 is assembled from high-strength glass fiber boards, and the cover body 33 is connected to the fixing block 32 through a high-strength resin hinge.

[0038] More specifically:

[0039] like Figure 1-Figure 4 As shown:

[0040] In combination with the above content, a mounting assembly 4 is provided on the surface of the hydrogen cooler body 2, and the mounting assembly 4 includes a fixing clamp 41 symmetrically arranged on the surface of the hydrogen cooler body 2, and a mounting plate 43 installed on the bottom surface of the hydrogen cooler body 2 and a fixing plate 44 arranged on the side of the mounting plate 43 inside the hydrogen cooler chamber shell 1, and the mounting plate 43 is connected to the fixing clamp 41 and the fixing plate 44 respectively by bolts; a movable groove is opened on one side of the hydrogen cooler chamber shell 1 near the fixing plate 44, and a buffer damper 42 is fixedly connected between the fixing plate 44 and the hydrogen cooler chamber shell 1.

[0041] In the present embodiment: when the generator vibrates, it will drive the hydrogen cooler chamber shell 1 to vibrate, and then the vibration can be buffered by the deformation of the buffer damper 42, thereby reducing the influence of the vibration on the hydrogen cooler body 2. When the hydrogen cooler body 2 needs to be disassembled, the mounting plate 43 can be removed from the surface of the fixing plate 44 by rotating the bolts on the mounting plate 43, and the hydrogen cooler body 2 can be disassembled. At the same time, the fixing clamp 41 can be released from the limit of the hydrogen cooler body 2 by rotating the bolts on the fixing clamp 41, so as to facilitate the maintenance of the hydrogen cooler body 2. Similarly, the fixing clamp 41 and the mounting plate 43 can facilitate the installation of the hydrogen cooler body 2 on the surface of the fixing plate 44.

[0042] Working principle: When the generator hydrogen cooler needs to be inspected, the cover body 33 is unfolded by flipping the two sets of connecting blocks 34, and then the slot on the unfolded cover body 33 is aligned with the block 310, and the cover body 33 is pressed to make the block 310 snap into the slot, and the ventilation hole 35 is blocked by the cover body 33, so as to prevent foreign matter from falling into the bottom of the generator through the ventilation hole 35 during inspection. At the same time, the rotating rod 38 is rotated by the handle to drive the elliptical block 39 to rotate, so that the two ends of the elliptical block 39 are against the cover body 33, and the cover body 33 is limited by the elliptical block 39, so as to increase the stability of the cover body 33 so that the staff can stand on the surface of the cover body 33 to inspect the hydrogen cooler body 2, thereby improving the inspection efficiency. The ring gasket 37 can improve the sealing effect of the hydrogen cooler chamber shell 1. After the inspection and maintenance is completed, the cover plate body 33 is removed to ensure the normal operation of the ventilation hole 35, and the two groups of cover plate bodies 33 are folded to facilitate the storage of the cover plate body 33. When the generator vibrates, it will drive the hydrogen cooler chamber shell 1 to vibrate, and then the vibration can be buffered by the deformation of the buffer damper 42 to reduce the impact of the vibration on the hydrogen cooler body 2. When the hydrogen cooler body 2 needs to be disassembled, the mounting plate 43 is removed from the surface of the fixing plate 44 by rotating the bolts on the mounting plate 43, and the hydrogen cooler body 2 can be disassembled. At the same time, the fixing clamp 41 can be released by rotating the bolts on the fixing clamp 41 to limit the hydrogen cooler body 2, which is convenient for the inspection and maintenance of the hydrogen cooler body 2.

[0043] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention to solve the problems raised in the above background technology.

Claims

1. A foldable protective cover plate for a generator hydrogen cooler housing, comprising a hydrogen cooler housing (1) and a hydrogen cooler body (2) installed inside the hydrogen cooler housing (1), characterized in that: A cover plate assembly (3) is provided on the surface of the hydrogen cooler chamber shell (1); The cover plate assembly (3) comprises a plurality of groups of ventilation holes (35) symmetrically arranged on the bottom surface of the hydrogen cooler chamber shell (1), a fixing block (32) arranged above the ventilation holes (35), and a connecting block (34) symmetrically hinged to both sides of the fixing block (32) via a hinge axis, wherein the surface of the connecting block (34) is fixedly connected to a cover plate body (33).

2. The foldable protective cover plate for the generator hydrogen cooler housing according to claim 1 is characterized in that: A clamping block (310) is fixedly connected to a side of the surface of the hydrogen cooler chamber shell (1) close to the cover plate body (33), and a clamping groove matching the clamping block (310) is provided on a side of the cover plate body (33) close to the clamping block (310).

3. The foldable protective cover plate for the inner shell of a hydrogen cooler of a generator according to claim 1 is characterized in that: The interior of the fixed block (32) is rotatably connected to a rotating rod (38) via a bearing, and the surface of the rotating rod (38) is fixedly connected to an elliptical block (39). A rotating groove matching the elliptical block (39) is provided on a side of the interior of the fixed block (32) close to the elliptical block (39), and one end of the rotating rod (38) passes through the interior of the fixed block (32) and is fixedly connected to a handle arranged on the outside of the fixed block (32).

4. The foldable protective cover plate for the inner shell of a hydrogen cooler of a generator according to claim 1 is characterized in that: A plurality of groups of heat-conducting fins (31) arranged at equal distances are fixedly connected to the surface of the hydrogen cooler body (2).

5. The foldable protective cover plate for the inner shell of a hydrogen cooler of a generator according to claim 1 is characterized in that: Inlet and outlet water pipes (36) are symmetrically mounted on the surface of the hydrogen cooler body (2), and a sealing ring gasket (37) is fixedly connected to one side of the surface of the hydrogen cooler chamber shell (1) close to the inlet and outlet water pipes (36).

6. The foldable protective cover plate for the inner shell of a hydrogen cooler of a generator according to claim 1 is characterized in that: The surface of the hydrogen cooler body (2) is provided with a mounting assembly (4), the mounting assembly (4) comprising a fixing clamp (41) symmetrically arranged on the surface of the hydrogen cooler body (2), a mounting plate (43) mounted on the bottom surface of the hydrogen cooler body (2), and a fixing plate (44) arranged inside the hydrogen cooler chamber shell (1) near the side of the mounting plate (43), the mounting plate (43) being connected to the fixing clamp (41) and the fixing plate (44) respectively by bolts.

7. The foldable protective cover plate for the generator hydrogen cooler housing according to claim 6 is characterized in that: A movable groove is provided on one side of the hydrogen cooler chamber shell (1) close to the fixed plate (44), and a buffer damper (42) is fixedly connected between the fixed plate (44) and the hydrogen cooler chamber shell (1).

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