A generator rotor extraction device

Abstract

The utility model provides a kind of generator rotor extraction device, it is related to the technical field of generator rotor extraction.The generator rotor extraction device includes base, hydraulic jack, lower clamping piece, upper clamping piece and fastening assembly;Base is equipped with limiting side plate and hydraulic cylinder, limiting side plate is equipped with limiting groove;Hydraulic jack is detachably installed in hydraulic cylinder;Lower clamping piece is installed in limiting groove, and its output end is in abutment with hydraulic jack;Upper clamping piece is installed above lower clamping piece;Fastening assembly includes lower fastening plate, upper fastening plate, threaded rod and nut;Lower fastening plate is welded on lower clamping piece, upper fastening plate is welded on upper clamping piece, threaded rod is arranged in upper fastening plate, and threaded rod is arranged in lower fastening plate, nut is threadedly connected with threaded rod.The generator rotor extraction device solves the technical problem that existing gas turbine generator rotor extraction mode is poor in fixing property for rotor head, which causes rotor to shake easily when moving.

Description

Technical Field

[0001] This utility model relates to the technical field of generator rotor extraction, and in particular to a generator rotor extraction device. Background Technology

[0002] Rotor extraction is a crucial step in generator maintenance. It requires removing the rotor from the stator cavity to facilitate important maintenance tasks such as coil testing, bearing replacement, and core maintenance.

[0003] The removal of existing gas turbine generator rotors is typically done manually with the aid of auxiliary tools. A rubber plate, a sliding plate, and a pad are placed sequentially in the gap between the stator and rotor, with lubricant applied to the contact surfaces of the sliding plate and the pad. Next, a rubber pad is placed over the rotor head, and a sling is attached to the pad and then hooked onto an electric hoist mounted on a lifting beam. The electric hoist is then activated to lift the rotor head, and the rotor is gradually removed from the equipment by moving the lifting beam. This method of removing gas turbine generator rotors provides poor stability for the rotor head, causing the rotor to wobble easily during movement.

[0004] In the process of implementing this embodiment, the inventors discovered at least the following problems: The existing method of extracting the rotor of a gas turbine generator has poor stability of the rotor head, which makes the rotor prone to shaking when moving. Utility Model Content

[0005] The purpose of this invention is to provide a generator rotor extraction device, which solves the technical problem that the existing gas turbine generator rotor extraction method has poor rotor head fixation, causing the rotor to easily shake when moving.

[0006] Utility model solution: This utility model provides a generator rotor extraction device, including a base, a hydraulic jack, a lower clamping member, an upper clamping member, and a fastening assembly. The base is provided with a limiting side plate and a hydraulic cylinder, and the limiting side plate is provided with a limiting groove. The hydraulic jack is detachably installed on the hydraulic cylinder. The lower clamping member is installed in the limiting groove and abuts against the output end of the hydraulic jack. The upper clamping member is installed above the lower clamping member. The fastening assembly includes a lower fastening plate, an upper fastening plate, a threaded rod, and a nut. The lower fastening plate is welded to the lower clamping member, the upper fastening plate is welded to the upper clamping member, the threaded rod passes through the upper fastening plate and the lower fastening plate, and the nut is threadedly connected to the threaded rod.

[0007] Furthermore, a sliding assembly is installed at the bottom of the base; the sliding assembly includes a slide block and a track roller; the slide block is provided with an installation groove, and a limiting plate is provided in the installation groove, and the track roller is fitted onto the limiting plate.

[0008] Furthermore, the base is provided with a locking hole.

[0009] Furthermore, the base is provided with a first lifting lug.

[0010] Furthermore, the hydraulic cylinder is provided with a hydraulic nozzle groove.

[0011] Furthermore, the upper clamping member is provided with a second lifting lug.

[0012] Furthermore, a lower rib is welded between the lower fastening plate and the lower clamping member; an upper rib is welded between the upper fastening plate and the upper clamping member.

[0013] Beneficial effects: This invention provides a generator rotor extraction device. In use, a hydraulic jack is installed on a hydraulic cylinder, and a lower clamping member is installed above the hydraulic jack and positioned within a limiting groove. The base is moved below the rotor head, and the hydraulic jack is activated, causing the lower clamping member to engage with the rotor's journal. The upper clamping member is then hoisted above the lower clamping member. A threaded rod is passed through the lower and upper fastening plates, and a nut is screwed into the threaded rod, ensuring that the upper nut abuts against the upper surface of the upper fastening plate, and the lower nut abuts against the lower surface of the lower fastening plate. This stabilizes the rotor head. The height of the rotor head can be adjusted using the hydraulic jack, and the rotor can be extracted from the stator by pulling the base with a crane. Therefore, this generator rotor extraction device provides excellent rotor head stability, preventing the rotor from easily shaking during movement. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the generator rotor extraction device provided in this embodiment; Figure 2 This is a schematic diagram of the generator rotor extraction device provided in this embodiment; Figure 3 This is a schematic diagram of the generator rotor extraction device provided in this embodiment; Figure 4 This is a schematic diagram of the generator rotor extraction device provided in this embodiment.

[0016] icon: 100-Base; 110-Limiting side plate; 111-Limiting groove; 120-Hydraulic cylinder; 121-Hydraulic nozzle groove; 122-Lock hole; 140-First lifting lug; 130-Sliding assembly; 131-Slide block; 132-Mounting groove; 133-Limiting plate; 134-Crawler roller; 200-Hydraulic jack; 300-lower clamping element; 400 - Upper clamping element; 410 - Second lifting lug; 500-Fastening assembly; 510-Lower fastener plate; 511-Lower rib plate; 520-Upper fastener plate; 521-Upper rib plate; 530-Threaded rod; 540-Nut. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, terms such as "horizontal" and "vertical" do not imply that the components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] This embodiment provides a generator rotor extraction device; please refer to [reference needed]. Figure 1-4 As shown, the assembly includes a base 100, a hydraulic jack 200, a lower clamping member 300, an upper clamping member 400, and a fastening assembly 500. The base 100 is provided with a limiting side plate 110 and a hydraulic cylinder 120, and the limiting side plate 110 is provided with a limiting groove 111. The hydraulic jack 200 is detachably installed on the hydraulic cylinder 120. The lower clamping member 300 is installed in the limiting groove 111 and abuts against the output end of the hydraulic jack 200. The upper clamping member 400 is installed above the lower clamping member 300. The fastening assembly 500 includes a lower fastening plate 510, an upper fastening plate 520, a threaded rod 530, and a nut 540. The lower fastening plate 510 is welded to the lower clamping member 300, the upper fastening plate 520 is welded to the upper clamping member 400, the threaded rod 530 passes through the upper fastening plate 520 and the lower fastening plate 510, and the nut 540 is threadedly connected to the threaded rod 530.

[0024] Specifically, the base 100 is welded from steel, and there are two limiting side plates 110 located on both sides of the base 100, two limiting grooves 111, two hydraulic cylinders 120, two hydraulic tops 200, each with a support capacity of 50t, grooves in the middle of the lower clamping member 300 and the upper clamping member, and fastening assembly 500 used to connect the upper clamping member 400 and the lower clamping member 300, two lower fastening plates 510 and two upper fastening plates 520, eight threaded rods 530, and sixteen nuts 540. In use, the hydraulic jack 200 is installed on the hydraulic cylinder 120, the lower clamping member 300 is installed above the hydraulic jack 200 and placed in the limiting groove 111, the base 100 is moved below the rotor head, the hydraulic jack 200 is activated, so that the lower clamping member 300 fits against the rotor journal, the upper clamping member 400 is hoisted above the lower clamping member 300, the threaded rod 530 is passed through the lower fastening plate 510 and the upper fastening plate 520, the nut 540 is screwed into the threaded rod 530, and the upper nut 540 abuts against the upper surface of the upper fastening plate 520, and the lower nut 540 abuts against the lower surface of the lower fastening plate 510. In this way, the rotor head can be stably fixed. At the same time, the height of the rotor head can be adjusted by the hydraulic jack 200. By pulling the base 100 with a crane, the rotor can be pulled out of the stator.

[0025] In this embodiment, a sliding assembly 130 is installed at the bottom of the base 100; the sliding assembly 130 includes a slide block 131 and a track roller 134; the slide block 131 is provided with an installation groove 132, and a limiting plate 133 is provided in the installation groove 132, and the track roller 134 is fitted onto the limiting plate 133.

[0026] Specifically, the sliding assembly 130 reduces the friction between the base 100 and the track, facilitating the movement of the base 100. Four slides 131 are provided at the bottom of the base 100. The mounting groove 132 is used to install the limiting plate 133 and the track roller 134. The limiting plate 133 is used to limit the position of the track roller 134 and prevent the track roller 134 from disengaging from the slide 131.

[0027] In this embodiment, the base 100 is provided with a lock hole 122.

[0028] Specifically, the lock hole 122 has three holes for installing hook locks.

[0029] In this embodiment, the base 100 is provided with a first lifting lug 140.

[0030] Specifically, the first lifting lug 140 is designed to facilitate the transfer of the base 100 to the vicinity of the rotor head.

[0031] In this embodiment, the hydraulic cylinder 120 is provided with a hydraulic nozzle groove 121.

[0032] Specifically, the hydraulic nozzle groove 121 is designed to facilitate the insertion of the hydraulic top 200, because the hydraulic nozzle of the hydraulic top 200 protrudes from the hydraulic top 200.

[0033] In this embodiment, the upper clamping member 400 is provided with a second lifting lug 410.

[0034] Specifically, the second lifting lug 410 is designed to facilitate the crane to lift the upper clamping member 400 above the lower clamping member 300.

[0035] In this embodiment, a lower rib plate 511 is welded between the lower fastening plate 510 and the lower clamping member 300; an upper rib plate 521 is welded between the upper fastening plate 520 and the upper clamping member 400.

[0036] Specifically, the lower rib plate 511 is used to strengthen the connection between the lower fastening plate 510 and the lower clamping member 300, and the upper rib plate 521 is used to strengthen the connection between the upper fastening plate 520 and the upper clamping member 400.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A generator rotor extraction device, characterized in that, It includes a base (100), a hydraulic jack (200), a lower clamping member (300), an upper clamping member (400), and a fastening assembly (500); The base (100) is provided with a limiting side plate (110) and a hydraulic cylinder (120), and the limiting side plate (110) is provided with a limiting groove (111). The hydraulic jack (200) is detachably installed on the hydraulic cylinder (120); The lower clamping member (300) is installed in the limiting groove (111) and abuts against the output end of the hydraulic jack (200); The upper clamping member (400) is mounted above the lower clamping member (300); The fastening assembly (500) includes a lower fastening plate (510), an upper fastening plate (520), a threaded rod (530), and a nut (540); The lower fastening plate (510) is welded to the lower clamping member (300), the upper fastening plate (520) is welded to the upper clamping member (400), the threaded rod (530) passes through the upper fastening plate (520) and the lower fastening plate (510), and the nut (540) is threadedly connected to the threaded rod (530).

2. The generator rotor extraction device according to claim 1, characterized in that, A sliding component (130) is installed at the bottom of the base (100); The sliding assembly (130) includes a slide block (131) and a track roller (134). The slide (131) is provided with an installation groove (132), and a limiting plate (133) is provided in the installation groove (132). The track roller (134) is fitted onto the limiting plate (133).

3. The generator rotor extraction device according to claim 2, characterized in that, The base (100) is provided with a lock hole (122).

4. The generator rotor extraction device according to claim 3, characterized in that, The base (100) is provided with a first lifting lug (140).

5. The generator rotor extraction device according to claim 4, characterized in that, The hydraulic cylinder (120) is provided with a hydraulic nozzle groove (121).

6. The generator rotor extraction device according to claim 5, characterized in that, The upper clamping member (400) is provided with a second lifting lug (410).

7. A generator rotor extraction device according to claim 6, characterized in that, A lower rib plate (511) is welded between the lower fastening plate (510) and the lower clamping member (300). An upper rib (521) is welded between the upper fastening plate (520) and the upper clamping member (400).

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