Converter cooling fan replacement device

Abstract

The application discloses a converter cooling fan replacement device, which comprises a hoisting device for hoisting the fan, a telescopic device connected with the hoisting device for realizing extension and retraction of the hoisting device, a rotating device comprising a support, a motor, a gear and two rotating seats and rotating parts, the rotating part being arranged on the support, the motor being arranged on the rotating part for driving the gear to rotate in opposite directions, the rotating seat being U-shaped and being provided with a gear rack matched with the gear, and a lifting device connected with the rotating seat for adjusting the height of the two rotating seats relative to the ground. In the application, multi-dimensional precise adjustment of fan replacement is realized, and multi-dimensional adjustment of fan replacement is realized through cooperation of the lifting device, the rotating device and the telescopic device.

Description

Technical Field

[0001] This invention relates to the field of fan replacement technology, and in particular to a fan replacement device for a converter cooler. Background Technology

[0002] In high-voltage direct current (HVDC) power transmission systems, converter transformers (CVTs) are critical equipment, and the stability of their cooling systems directly affects grid security. As an important component of the cooling system, cooler fans require maintenance or replacement after long-term operation. Currently, the industry primarily uses manual methods to replace faulty fans: two personnel must ride in an insulated boom lift to a high altitude, working together under energized or de-energized conditions, using simple manual hoists or manual lifting to disassemble and reassemble fans weighing over 45kg. The entire process lacks specialized mechanized tools or equipment to provide effective support, which not only increases the labor intensity and operational risks for workers but also affects the overall efficiency and safety of the operation. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned technical problems and to provide a converter cooler fan replacement device.

[0004] The technical solution of the present invention: a fan replacement device for a converter cooler, comprising: Lifting equipment, used for lifting fans; A telescopic device, connected to the hoisting device, is used to extend and retract the hoisting device; A rotating device includes a support, a motor, a gear, and two rotating seats and two rotating parts. The rotating parts are mounted on the support, and the motor is mounted on the rotating parts to drive the gear to rotate in both directions. The rotating seats are U-shaped and have a rack that matches the gear. A lifting device, connected to the rotating base, is used to adjust the height of the two rotating bases relative to the ground.

[0005] Preferably, the hoisting device includes a hook and two slings. One end of the hook is rotatably connected to the telescopic device, and the other end of the sling is connected to the hook. One end of the sling is provided with a self-locking anti-detachment buckle.

[0006] Preferably, the telescopic device includes a telescopic electric cylinder, two U-shaped slide rails, and a telescopic frame. The telescopic electric cylinder and the U-shaped slide rails are both mounted on the rotating device. The telescopic electric cylinder is used to drive the telescopic frame to extend and retract on the U-shaped slide rails.

[0007] Preferably, the U-shaped slide rail is provided with a sliding groove; the telescopic frame includes two inner short rods, four outer short rods, and a number of outer long rods, inner long rods, and round rods, wherein one end of the two inner long rods is connected to the sliding groove through the end of a round rod and can slide on the U-shaped slide rail, one end of the two outer long rods is rotatable on the U-shaped slide rail through a pin, the middle and end of the remaining inner long rods are rotatably disposed between the two outer long rods through the round rods, the ends of the inner short rods are rotatably disposed between the two outer long rods and the two outer short rods respectively through the round rods, and the outer short rods are rotatably disposed on the inner long rods through the round rods.

[0008] Preferably, the lifting device includes a housing, a lifting cylinder, a lifting bracket, two lifting slide rails, and several guide blocks. The lifting cylinder, the lifting bracket, and the lifting slide rails are all disposed in the housing. The guide blocks are disposed on the lifting bracket and cooperate with the lifting slide rails. The lifting cylinder is used to drive the lifting bracket to move up and down.

[0009] Preferably, it also includes a fence, and the lifting device is mounted on the fence.

[0010] The beneficial effects of this invention are: This invention realizes multi-dimensional precise adjustment of fan replacement. Through the combined use of lifting device, rotating device and telescopic device, multi-dimensional adjustment of fan replacement is realized. The integrated structure realizes the composite action of lifting, rotating and telescopic, which is especially suitable for scenarios with limited space and high precision requirements, such as converter cooler fans. Attached Figure Description

[0011] Figure 1 This is a perspective view of the overall structure of a preferred embodiment of the present invention; Figure 2 This is a side view of the overall structure of a preferred embodiment of the present invention; Figure 3 yes Figure 1 Enlarged view of a section at point A in the middle; Figure 4 This is a schematic diagram illustrating the extension and retraction principle of the telescopic device in a preferred embodiment of the present invention.

[0012] Reference numerals: 10. Bracket; 2. Motor; 3. Gear; 4. Rotary seat; 5. Rotating part; 401. Rack; 6. Hook; 7. Lifting cable; 8. Telescopic electric cylinder; 9. U-shaped slide rail; 901. Slide groove; 11. Inner short rod; 12. Outer short rod; 13. Outer long rod; 14. Inner long rod; 15. Round rod; 16. Box; 17. Lifting electric cylinder; 18. Lifting bracket; 19. Lifting slide rail; 20. Guide block; 21. Fence. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] Reference Figures 1 to 4 A converter transformer cooler fan replacement device, comprising: Lifting equipment, used for lifting fans; A telescopic device, connected to the hoisting device, is used to extend and retract the hoisting device; The rotating device includes a support 10, a motor 2, a gear 3, and two rotating seats 4 and two rotating parts 5. The rotating parts 5 are mounted on the support 10. The motor 2 is mounted on the rotating parts 5 to drive the gear 3 to rotate in both directions. The rotating seats 4 are U-shaped and have a rack 401 that is adapted to the gear 3. A lifting device, connected to the rotating seats 4, is used to adjust the relative height of the two rotating seats 4 to the ground. In this invention, after the hoisting device is connected to the fan, the lifting device drives the rotating seats 4 to rise to the required height, thereby hoisting the fan to the required height. The telescopic device extends the hoisting device to send the fan into the air duct. The motor 2 drives the gear 3 to rotate. Since the rotating seats 4 are equipped with a rack 401, the rotation of the gear 3 causes the rotating part 5 to rotate on the rotating seats 4, thereby changing the horizontal position of the fan and aligning it with the installation position in the air duct for installation. After installation, the hoisting device is removed from the fan, and the telescopic device retracts. Specifically, the motor 2 is a servo motor.

[0015] As a preferred embodiment of the present invention, it may also have the following additional technical features: In this embodiment, the hoisting device includes a hook 6 and two slings 7. One end of the hook 6 is rotatably connected to the telescopic device, and the other end of the sling 7 is connected to the hook 6. One end of the sling 7 is provided with a self-locking anti-detachment buckle. Specifically, one end of the hook 6 is provided with a fixing ring, which is rotatably connected to the round rod 15. The self-locking anti-detachment buckle on the sling 7 can automatically lock the opening after being attached to the fan, preventing the parts from accidentally falling off during hoisting. The self-locking anti-detachment buckle is existing technology and will not be described further here.

[0016] In this embodiment, the telescopic device includes a telescopic electric cylinder 8, two U-shaped slide rails 9, and a telescopic frame. The telescopic electric cylinder 8 and the U-shaped slide rails 9 are both mounted on the rotating device. The telescopic electric cylinder 8 is used to drive the telescopic frame to extend and retract on the U-shaped slide rails 9.

[0017] In this embodiment, the U-shaped slide rail 9 is provided with a slide groove 901; the telescopic frame includes two inner short rods 11, four outer short rods 12, and a number of outer long rods 13, inner long rods 14, and round rods 15. One end of the two inner long rods 14 is connected to the slide groove 901 through the end of the round rod 15 and can slide on the U-shaped slide rail 9. One end of the two outer long rods 13 is rotatable on the U-shaped slide rail 9 through a pin. The middle and end of the remaining inner long rods 14 are rotatably disposed between the two outer long rods 13 through the round rods 15. The ends of the inner short rods 11 are rotatably disposed between the two outer long rods 13 and the two outer short rods 12 through the round rods 15, respectively. The outer short rods 12 are rotatably disposed on the inner long rods 14 through the round rods 15. The output end of the telescopic electric cylinder 8 is connected to a round rod 15. When the telescopic electric cylinder 8 operates, it drives the round rod 15 downward. The end of the round rod 15 moves downward within the slide groove 901, causing the ends of the outer long rod 13 and the inner long rod 14 to rotate within the U-shaped groove of the U-shaped slide rail 9. The ends of the outer long rod 13 and the inner long rod 14 rotate relative to each other, thus retracting the telescopic frame. When the telescopic electric cylinder 8 operates, it drives the round rod 15 upward, thus extending the telescopic frame. Specifically, the end of the round rod 15 is secured by a nut and a pin.

[0018] In this embodiment, the lifting device includes a housing 16, a lifting cylinder 17, a lifting bracket 18, two lifting slide rails 19, and several guide blocks 20. The lifting cylinder 17, the lifting bracket 18, and the lifting slide rails 19 are all disposed within the housing 16. The guide blocks 20 are disposed on the lifting bracket 18 and cooperate with the lifting slide rails 19. The lifting cylinder 17 is used to drive the lifting bracket 18 to move up and down. The operation of the lifting cylinder 17 drives the lifting bracket 18 to move up and down within the housing 16, causing the rotating seat 4 to move up and down, which in turn drives the telescopic device to move up and down.

[0019] In this embodiment, a fence 21 is also included, and the lifting device is mounted on the fence 21.

[0020] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fan replacement device for a converter transformer cooler, characterized in that, include: Lifting equipment, used for lifting fans; A telescopic device, connected to the hoisting device, is used to extend and retract the hoisting device; The rotating device includes a bracket (10), a motor (2), a gear (3), and two rotating seats (4) and two rotating parts (5). The rotating parts (5) are mounted on the bracket (10), and the motor (2) is mounted on the rotating parts (5) to drive the gear (3) to rotate in both directions. The rotating seats (4) are U-shaped and have racks (401) that are adapted to the gears (3). A lifting device is connected to the rotating seat (4) to adjust the height of the two rotating seats (4) relative to the ground.

2. The converter cooler fan replacement device according to claim 1, characterized in that: The hoisting device includes a hook (6) and two slings (7). One end of the hook (6) is rotatably connected to the telescopic device, and the other end of the slings (7) is connected to the hook (6). One end of the slings (7) is provided with a self-locking anti-detachment buckle.

3. The converter cooler fan replacement device according to claim 1, characterized in that: The telescopic device consists of a telescopic electric cylinder (8), two U-shaped slide rails (9), and a telescopic frame. The telescopic electric cylinder (8) and the U-shaped slide rails (9) are both mounted on the rotating device. The telescopic electric cylinder (8) is used to drive the telescopic frame to extend and retract on the U-shaped slide rails (9).

4. The converter cooler fan replacement device according to claim 3, characterized in that: The U-shaped slide rail (9) is provided with a sliding groove (901); the telescopic frame includes two inner short rods (11), four outer short rods (12), and a number of outer long rods (13), inner long rods (14), and round rods (15). One end of the two inner long rods (14) is connected to the sliding groove (901) through the end of the round rod (15) and can slide on the U-shaped slide rail (9). One end of the two outer long rods (13) is rotatable on the U-shaped slide rail (9) through a pin. The middle and end of the remaining inner long rods (14) are rotatably arranged between the two outer long rods (13) through the round rod (15). The ends of the inner short rods (11) are rotatably arranged between the two outer long rods (13) and the two outer short rods (12) through the round rod (15). The outer short rods (12) are rotatably arranged on the inner long rods (14) through the round rod (15).

5. The converter cooler fan replacement device according to claim 1, characterized in that: The lifting device includes a housing (16), a lifting electric cylinder (17), a lifting bracket (18), two lifting slide rails (19), and several guide blocks (20). The lifting electric cylinder (17), the lifting bracket (18), and the lifting slide rails (19) are all located inside the housing (16). The guide blocks (20) are located on the lifting bracket (18) and cooperate with the lifting slide rails (19). The lifting electric cylinder (17) is used to drive the lifting bracket (18) to move up and down.

6. The converter cooler fan replacement device according to claim 1, characterized in that: It also includes a fence (21), on which the lifting device is mounted.

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