Apparatus and method for moving emergency diesel generator in power plant

Abstract

Disclosed is an apparatus for moving a generator of an emergency diesel generator in a power plant, the apparatus moving a heavy emergency diesel generator (EDG) disposed in a limited space inside the power plant to a position where the EDG is to be repaired, and returning the EDG to its original position after repair. The present invention comprises: a first moving rail; a second moving rail spaced apart from the first moving rail and disposed to be parallel thereto; and multiple moving bodies arranged on the first moving rail and the second moving rail, wherein the multiple moving bodies include: an upper plate unit on which a heavy object is placed; a first side surface unit extending or coupled to a side surface from the upper plate unit; a second side surface unit maintaining a gap from the first side surface unit and extending or coupled to another side surface from the upper plate unit; a load support unit connecting the first side surface unit and the second side surface unit; and multiple rolling members arranged on an outer circumferential surface of the load support unit.

Description

Generator moving device and method for emergency diesel generator in power plant

[0001] The present invention relates to a device and method for moving a generator of an emergency diesel generator (EDG) within a power plant, which moves the generator of a heavy emergency diesel generator (EDG) placed in a limited space within the power plant to a location for maintenance and returns it to its original location after maintenance.

[0002] When disassembling, inspecting, or replacing an electric motor in a power plant, the electric motor is lifted and relocated using an overhead crane and hoist within the building to perform the disassembly, inspection, and maintenance work. Inside the emergency diesel generator building, a heavy emergency diesel generator (EDG), weighing approximately 50 tons, is placed in a confined space. These emergency diesel generators require workspace to perform maintenance work, such as replacing or disassembling and inspecting parts, in the event of a failure of internal components such as the cooling fan. However, because the emergency diesel generator is installed in a confined space in the building where it is installed, securing space for maintenance work is difficult. In particular, the building where the emergency diesel generator is installed lacks an overhead crane or hoist capable of moving the heavy emergency diesel generator generator, making it difficult to handle or relocate the emergency diesel generator generator.

[0003] Accordingly, the present invention has been proposed to solve the above-mentioned problem, and the purpose of the present invention is to provide a generator moving device and method for an emergency diesel generator in a power plant, which secures space for maintenance work by moving a heavy emergency diesel generator generator in a building in which the emergency diesel generator is installed, and then moves the emergency diesel generator generator back to its original location after maintenance.

[0004] In order to achieve the above object of the present invention, the present invention includes a first moving rail, a second moving rail arranged parallel to the first moving rail at a distance from the first moving rail, and a plurality of moving bodies arranged on the first moving rail and the second moving rail,

[0005] A plurality of the above moving bodies provide a generator moving device of an emergency diesel generator including an upper plate on which a weight is placed, a first side plate that extends laterally from or is joined to the upper plate, a second side plate that extends laterally from or is joined to another side from the upper plate while maintaining a gap from the first side plate, a load supporting portion that connects the first side plate and the second side plate, and a plurality of cloud members that are arranged on the outer circumference of the load supporting portion.

[0006] It is preferable that each of the plurality of above-mentioned cloud members has a rotation axis, and that the rotation axis is connected to the rotation axis of an adjacently arranged cloud member by a connecting member.

[0007] It is preferable that the first side portion and the second side portion are integrally fixed to the load-bearing portion by welding or fastening bolts.

[0008] It is preferable that the above load-bearing portion be supported by a plurality of cloud members arranged at the lower portion of the above load-bearing portion.

[0009] In addition, the present invention comprises the steps of: separating a coupling connecting a generator and an engine of an emergency diesel generator; after the step of separating the coupling, releasing a generator base bolt of the emergency diesel generator and placing a hydraulic ram at the bottom; after the step of placing a hydraulic ram at the bottom of the generator, operating the hydraulic ram placed at the bottom of the generator to lift the generator; after the step of lifting the generator, arranging a movable rail and a movable body at the bottom of the generator; after the step of arranging the movable rail and the movable body at the bottom of the generator, operating the hydraulic ram to seat the generator on an upper plate of the movable body; after the step of seated the generator on the upper plate of the movable body, removing the hydraulic ram from the bottom of the generator; after the step of removing the hydraulic ram from the bottom of the generator, moving the generator for maintenance and returning it to its original position; after the step of moving the emergency generator for maintenance and returning it to its original position, installing the hydraulic ram at the bottom of the generator and operating the hydraulic ram to lift the generator; and after the step of lifting the generator, removing the movable rail and A method for moving an emergency generator within a power plant is provided, including the steps of removing the moving body from the lower portion of the generator, returning the generator to its original position using the hydraulic ram, and then connecting the coupling of the generator of the emergency diesel generator and the engine and fastening the generator base bolt.

[0010] In the step of placing a movable rail and a movable body under the generator of the above emergency diesel generator,

[0011] The above moving rail includes a first moving rail and a second moving rail arranged parallel to the first moving rail at a distance from the first moving rail,

[0012] The above moving body is placed on the first moving rail and the second moving rail,

[0013] It is preferable to use a moving device including an upper plate on which a weight is placed, a first side plate that extends laterally from or is joined to the upper plate, a second side plate that extends laterally from or is joined to another side from the upper plate while maintaining a gap from the first side plate, a load-bearing portion that connects the first side plate and the second side plate, and a plurality of cloud members arranged on the outer surface of the load-bearing portion.

[0014] The present invention arranges moving rails in parallel, places a moving body on the moving rails, and places a generator of a heavy emergency diesel generator on the upper part of the moving body to secure a working space so that the generator of the emergency diesel generator is moved to a space where maintenance is possible, and after the generator of the emergency diesel generator is maintained, it is moved back to its original position, so that an emergency diesel generator installed in a narrow space can be easily maintained.

[0015] In particular, the present invention allows the load-bearing member to move in a state where a plurality of cloud members arranged on the lower surface of the load-bearing member are in direct contact with the load-bearing member, thereby sufficiently supporting a heavy load and easily moving the generator of the emergency diesel generator.

[0016] FIG. 1 is a schematic drawing of a moving device for moving a generator of an emergency diesel generator to explain an embodiment of the present invention.

[0017] Figure 2 is a cross-sectional view taken along section A-A' of Figure 1.

[0018] Figure 3 is a cross-sectional view taken along the line B-B' of Figure 1.

[0019] FIG. 4 is a drawing showing a moving rail on which a moving device is placed to explain an embodiment of the present invention.

[0020] FIG. 5 is a drawing showing a state in which a moving device is placed on a moving rail to explain an embodiment of the present invention.

[0021] FIG. 6 is a drawing showing a state in which the coupling and generator base bolts that connect the generator and engine are separated and the hydraulic ram is installed at the bottom of the generator to explain an embodiment of the present invention.

[0022] FIG. 7 is a drawing showing a state in which a generator is lifted by a hydraulic ram to explain an embodiment of the present invention.

[0023] FIG. 8 is a drawing showing a state in which a moving rail and a moving device are arranged at the bottom of a generator to explain an embodiment of the present invention.

[0024] FIG. 9 is a drawing showing a state in which a generator is mounted on a mobile device to explain an embodiment of the present invention.

[0025] FIG. 10 is a drawing for explaining a process of moving a generator to explain an embodiment of the present invention.

[0026] FIG. 11 is a drawing showing a state in which a generator is lifted by a hydraulic ram to explain an embodiment of the present invention.

[0027] FIG. 12 is a drawing showing a state in which the moving rail and moving device are removed from the bottom of the generator to explain an embodiment of the present invention.

[0028] FIG. 13 is a drawing showing a state in which the hydraulic ram placed at the bottom of the generator is removed to explain an embodiment of the present invention, and the coupling of the generator and the engine and the generator base bolt are re-secured.

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various other forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description have been omitted for clarity of description, and the same reference numerals will be assigned to identical or similar components throughout the specification.

[0030] FIG. 1 is a perspective view showing a moving body of a generator moving device of an emergency diesel generator in a power plant to explain an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along section AA of FIG. 1, and FIG. 3 is a cross-sectional view taken along section BB of FIG. 1, showing a moving body (100) of a generator moving device of an emergency diesel generator in a power plant. And FIG. 4 shows a moving rail (200) of a generator moving device of an emergency diesel generator in a power plant to explain an embodiment of the present invention.

[0031] The generator moving device of an emergency diesel generator in a power plant of an embodiment of the present invention includes a plurality of moving bodies (100) and a plurality of moving rails (200).

[0032] A plurality of moving bodies (100) include an upper plate (101), a first side surface (103), a second side surface (105), a load-bearing portion (107), and a plurality of cloud members (109), as shown in FIGS. 1 to 3.

[0033] The upper part (101) is a part where a heavy object such as an emergency diesel generator (300, EDG, Emergency Diesel Generator) is placed, and may be made of a steel plate having a predetermined thickness. In addition, the first side part (103) may extend from the upper part (101) to one side, or a separate steel plate may be joined to the side by welding or a fastening member such as a bolt. The second side part (105) is positioned at a distance from the first side part (103), and like the first side part (103), may extend from the upper part (101) to one side, or a separate steel plate may be joined to the side by welding or a fastening member such as a bolt.

[0034] The load-bearing member (107) is integrally fixed to the first side portion (103) and the second side portion (105). The load-bearing member (107) is made of a metal plate and is integrally fixed to the first side portion (103) and the second side portion (105) by welding or bolting.

[0035] That is, the upper portion (101), the first side portion (103), the second side portion (105), and the load-bearing portion (107) can have a cross-sectional shape that is approximately rectangular, as shown in FIG. 2.

[0036] The cloud member (109) may be formed in a cylindrical shape and is continuously arranged along the outer circumference of the load supporting portion (107). That is, the cloud member (109) is arranged with the rotation axis portion facing the first side portion (103) and the second side portion (105), and is arranged along the entire area of ​​the load supporting portion (107). These cloud members (109) may be arranged in total 18, 8 on the upper side of the load supporting portion (107), 8 on the lower side, and 1 each on the front and rear sides, based on the load supporting portion (107). These cloud members (109) are arranged in a state where the cloud members (109) arranged on the lower side of the load supporting portion (107) are in linear contact with the bottom surface of the load supporting portion (107). These cloud members (109) can be connected to adjacent cloud members (109) in pairs of two by means of connecting members (111).

[0037] The connecting members (111) are connected to the rotation axes (109a) of the cloud members (109). These connecting members (111) can be installed on both sides of the rotation axes (109a) of the cloud members (109). The cloud members (109) are connected in pairs by the connecting members (111), and the entire cloud members (109) are connected and can rotate around their respective rotation axes (109a). In addition, the cloud members (109) can move along the load supporting member (107) as a whole and their positions can be changed. The cloud members (109) can support the load of the load supporting member (107) by a plurality of cloud members (109) arranged at the lower end of the load supporting member (107).

[0038] That is, when a high load such as a generator (300) of an emergency diesel generator is placed on the upper part (101), its load is transferred to the upper part (101), the first side part (103), the second side part (105), and the load supporting part (107). The load transferred to the load supporting part (107) is transferred to the cloud members (109) arranged below the load supporting part (107) (see arrows in Fig. 3).

[0039]

[0040] A plurality of moving rails (200) are provided to guide a moving body (100) for a certain period of time, and include a first moving rail (201) and a second moving rail (203).

[0041] Since the first moving rail (201) and the second moving rail (203) can have the same structure, only the first moving rail (201) will be described, and the description of the second moving rail (203) will be replaced with the description of the first moving rail (201).

[0042] The first movable rail (201) includes a bottom surface portion (201a), a first side guide portion (201b), a second side guide portion (201c), a first stopper portion (201d), and a second stopper portion (201e). The bottom surface portion (201a) is a portion that is placed on the ground and has a constant width and a relatively long length. In addition, the first side guide portion (201b) and the second side guide portion (201c) are portions that extend vertically from the bottom surface portion (201a) at a distance from each other. In addition, the first stopper portion (201d) and the second stopper portion (201e) are configured to extend vertically from the start and end portions of the length of the bottom surface portion (201a) when viewed in the longitudinal direction. When compared to the length of the generator (300), it is preferable that the first moving rail (201) be made to be about 1.5 m longer than the length of the generator (300).

[0043] In this way, the bottom surface (201a) of the first movable rail (201) is the part where the movable body (100) is placed, and the first side guide part (201b) and the second side guide part (201c) serve to guide the cloud member (109) of the movable body (100) to move along a certain line when the movable body (100) moves. In addition, the first stopper part (201d) and the second stopper part (201e) of the first movable rail (201) serve to restrict the movement of the movable body (100).

[0044]

[0045] Figure 5 is a drawing showing an example of a generator moving device of an emergency diesel generator in a power plant, in which moving bodies (100) are installed on a moving rail (200).

[0046] That is, it is preferable that the generator moving device of the emergency diesel generator in the power plant of the present invention installs a first moving rail (201) and a second moving rail (203) at a certain interval at the bottom of the generator (300), and arranges two moving bodies (100) on the first moving rail (201) and arranges two moving bodies (100) on the second moving rail (203).

[0047]

[0048] A detailed description of a method for moving a generator (300) using a generator moving device of an emergency diesel generator in a power plant of the present invention is as follows.

[0049] First, as illustrated in FIG. 6, the worker releases the base bolt (not illustrated) installed on the bottom of the generator (300) of the emergency diesel generator and separates the coupling (350) connecting the generator (300) and the engine (500). After separating the coupling (350), a hydraulic ram (400) is installed on the bottom of the generator (300). If necessary, a plurality of hydraulic rams (400) may be placed on the bottom of the generator (300) (see FIG. 6).

[0050] After the hydraulic ram (400) is placed at the bottom of the generator (300), the generator (300) is lifted by operating the hydraulic ram (400) placed at the bottom of the generator (300) (see Fig. 7).

[0051] After the step of lifting the generator (300), when the generator (300) is raised to a sufficient height, space is created between the generator frame base (FB) and the lower part of the generator (300). Then, the worker arranges the first movable rail (201) and the second movable rail (203) parallel to each other on the lower part of the generator (300) and arranges a plurality of movable bodies (100) on the first movable rail (201) and the second movable rail (203) respectively (see Fig. 8). Then, after arranging the movable bodies (100) on the movable rails (200), the hydraulic ram (400) is operated to place the generator (300) on the upper part (101) of the movable body (100) (see Fig. 9).

[0052] After the generator (300) is installed on the upper part (101) of the moving body (100), the hydraulic ram (400) is removed from the lower part of the generator (300) (see Fig. 10). If the hydraulic ram (400) is installed in a location that does not impede the movement of the generator (300), the process of removing the hydraulic ram (400) is omitted.

[0053] And the generator (300) is installed on the upper part (101) of the moving body (100), and after removing the hydraulic ram (400), the generator (300) is moved for maintenance and then returned to its original position. At this time, the generator (300) can be moved by pushing or pulling the generator (300) using a separate device. Then, the load of the generator (300) is transferred to the load support member (107), and the load of the load support member (107) is respectively in direct contact with a plurality of cloud members (109) arranged below it. In this state, the cloud members (109) move along the movable rail (200) while being moved by an external force. At this time, the load of the generator (300) is transferred to the load support member (107). And, the cloud members (109) arranged and moving below the load support member (107) support the load of the generator (300) while being in direct contact with the load support member (107). That is, the load of the generator (300) transferred to the load support member (107) is distributed and transferred to the cloud members (109) arranged at the bottom of the load support member (107).

[0054] Therefore, the generator moving device of the emergency diesel generator of the present invention can easily move the generator (300) of the emergency diesel generator with a high load of up to 50 tons. Parts (e.g., cooling fan, etc.) of the generator (300) moved to a space where maintenance is possible are replaced, and the generator (300) is returned to its original position using the same method.

[0055] After servicing the generator (300) and returning it to its original position, the hydraulic ram (400) is placed at the bottom of the generator (300) and the hydraulic ram (400) is operated to raise the generator (300) again (see Fig. 11).

[0056] After lifting the generator (300), the mobile body (100) and the movable rail (200) are removed from the bottom of the generator (300) (see Fig. 12). After lifting the generator (300), the mobile body (100) and the movable rail (200) are removed from the bottom of the generator (300), and after placing the generator (300) in the initial position, the coupling (350) and base bolt of the generator (300) and the engine (500) are reconnected (see Fig. 13).

[0057]

[0058] In this way, the present invention arranges movable rails in parallel, places a movable body on the movable rails, and places a generator of a heavy emergency diesel generator on the upper part of the movable body to move it to a space where maintenance is possible, thereby securing a work space and enabling maintenance of the emergency diesel generator. In the present invention, since a plurality of rolling members are moved in a state where the rolling members arranged on the lower surface of the load-bearing member and the load-bearing member are in direct contact with each other, it can sufficiently support a heavy load and easily move it.

[0059] Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the claims, the detailed description of the invention, and the attached drawings, and it is obvious that this also falls within the scope of the present invention.

Claims

1. First moving rail, A second moving rail arranged parallel to the first moving rail at a distance from the first moving rail, and It includes a plurality of moving bodies arranged on the first moving rail and the second moving rail, Multiple of the above mobile bodies The upper part where the heavy object is placed, A first side portion extending laterally or joining from the upper portion, A second side portion extending or joining to another side from the upper portion while maintaining a gap with the first side portion; A load-bearing member connecting the first side portion and the second side portion, and A plurality of cloud members arranged on the outer surface of the above load-bearing member Generator moving device of an emergency diesel generator including.

2. In claim 1, The above cloud members are Each has a rotation axis, The above rotation axis is a generator moving device of an emergency diesel generator connected to the rotation axis of a cloud member arranged adjacently by a connecting member.

3. In claim 1, The above first side portion and the above second side portion A generator moving device of an emergency diesel generator that is integrally fixed to the above load-bearing member by welding or fastening bolts.

4. In claim 1, The above load-bearing part An emergency generator moving device supported by a plurality of cloud members arranged at the lower portion of the above load-bearing member.

5. Step of separating the coupling connecting the generator and engine of the emergency diesel generator. A step of placing a hydraulic ram at the bottom of the generator after the step of separating the coupling, After the step of placing a hydraulic ram at the bottom of the generator, the step of operating the hydraulic ram placed at the bottom of the generator to lift the generator, After the step of lifting the generator, the step of placing a movable rail and a movable body at the bottom of the generator; After the step of arranging the movable rail and the movable body on the lower part of the generator, the step of operating the hydraulic ram to place the generator on the upper part of the movable body; A step of removing the hydraulic ram from the lower part of the generator after the step of mounting the generator on the upper part of the moving body; After the step of removing the hydraulic ram from the bottom of the generator, the step of moving the generator for maintenance and returning it to its original position; After the step of moving the generator, servicing it, and returning it to its original position, the step of installing the hydraulic ram at the bottom of the generator and operating the hydraulic ram to lift the generator, and After the step of lifting the generator, the step of removing the moving rail and the moving body from the bottom of the generator, returning the generator to its original position using the hydraulic ram, and then connecting the coupling of the generator and the engine. A method for moving a generator of an emergency diesel generator within a power plant including a generator.

6. In claim 5, In the step of placing a movable rail and a movable body under the above generator The above moving rail First moving rail, and It includes a second moving rail arranged parallel to the first moving rail at a distance from the first moving rail, The above moving body It is arranged on the first moving rail and the second moving rail. The upper part where the heavy object is placed, A first side portion extending laterally or joining from the upper portion, A second side portion extending or joining to another side from the upper portion while maintaining a gap with the first side portion; A load-bearing member connecting the first side portion and the second side portion, and A method for moving a generator of an emergency diesel generator in a power plant using a moving device including a plurality of cloud members arranged on the outer surface of the load-bearing member.

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