CN111029084A

CN111029084A - Transformer convenient to overhaul

Info

Publication number: CN111029084A
Application number: CN201911397628.9A
Authority: CN
Inventors: 王光照
Original assignee: Yum Electric Co Ltd
Current assignee: Yum Electric Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-17
Anticipated expiration: 2039-12-30
Also published as: CN111029084B

Abstract

The invention provides a transformer convenient to overhaul, which is characterized by comprising: the roller assembly comprises a telescopic device and a roller, and the roller is arranged in a groove in the bottom of the transformer main body through the telescopic device. According to the invention, the roller is designed into a liftable structure, and the transformer is directly placed on the guide rail, so that safety accidents such as sliding, toppling and the like easily caused when the transformer is placed through the roller are avoided; the transformer is designed to be of a movable structure, and the transformer can be conveniently moved out of the box-type transformer substation through the matching of the guide rails, the roller assemblies and the lifting device when the transformer is overhauled, so that manpower and material resources are greatly saved, the maintenance is convenient, and the working efficiency is high.

Description

Transformer convenient to overhaul

Technical Field

The invention relates to the technical field of distribution equipment, in particular to a transformer convenient to overhaul.

Background

The box-type substation is also called a pre-installed substation or a pre-installed substation. The high-voltage switch equipment, the distribution transformer and the low-voltage distribution device are factory prefabricated indoor and outdoor compact distribution equipment which are integrated according to a certain wiring scheme, namely, the functions of transformer voltage reduction, low-voltage distribution and the like are organically combined together and are arranged in a steel structure box which is damp-proof, rust-proof, dust-proof, rat-proof, fireproof, anti-theft, heat-insulating, totally-closed and movable. The box-type transformer substation is suitable for mines, factory enterprises, oil-gas fields and wind power stations, replaces the original civil power distribution room and power distribution station, and becomes a novel complete set of power transformation and distribution device.

The box-type substation comprises a box body, high-voltage switch equipment, low-voltage distribution equipment and a transformer. The transformer is large in size, heavy in weight and not easy to move, and once the transformer breaks down and needs to be overhauled, the transformer is very troublesome. Usually, no space is available on site for the forklift to deploy, and only manual means such as manpower and iron bar crowbars can be used for assistance, so that time and labor are wasted, and the forklift is very inconvenient to influence the transmission and use of electric power for a long time.

Disclosure of Invention

The invention aims to solve the problems and provides a transformer convenient to overhaul, and the technical scheme is as follows:

a transformer for ease of servicing, comprising: the transformer comprises a transformer main body, a lifting device, a roller assembly and a plurality of guide rails;

the lifting device is used for lifting or descending the transformer main body so as to enable the transformer main body to be separated from or combined with the guide rail;

the roller assemblies comprise telescopic devices and rollers, grooves are formed in the bottoms of the transformer main bodies, the rollers are arranged in the grooves through the telescopic devices, and the transformer main bodies can move on the guide rails through the roller assemblies;

when the lifting device lifts the transformer main body, the telescopic device can extend out to enable the roller to be matched with the guide rail, and at the moment, the roller can roll on the guide rail; when the telescopic device retracts to enable the roller to be separated from the guide rail, the transformer main body can descend to enable the transformer main body to be matched with the guide rail.

Preferably, the telescopic device comprises a cylinder, and a piston rod of the cylinder is connected with the roller.

Preferably, a first driving device for driving the roller to rotate is arranged on the transformer main body.

Preferably, the first driving device is arranged in a groove at the bottom of the transformer main body; the first driving device comprises a transmission shaft and a motor used for driving the transmission shaft to rotate, and the transmission shaft drives the roller to rotate through a chain transmission mechanism.

Preferably, the motor drives the transmission shaft to rotate through a driving gear, and a locking device used for limiting the rotation of the driving gear is arranged on the driving device.

Preferably, the locking device comprises a locking member and a second driving device, wherein the second driving device is used for driving the locking member to move so as to be inserted into the tooth space of the driving gear, so that the driving gear is limited to rotate or move out of the tooth space of the driving gear.

Preferably, the roller is a concave wheel, and the guide rail is matched with the concave opening of the roller.

Preferably, the guide rail and the transformer main body are provided with saw-tooth structures capable of being engaged with each other.

Preferably, the guide rail is provided with a side guard.

Preferably, the guide rail terminal is provided with a limit baffle.

Preferably, the transformer main body includes a case, a transforming device, and a heat dissipating device for dissipating heat from the transforming device.

Preferably, the heat sink comprises a heat dissipation grid arranged on the shell, and an oil tank, a heat exchange pipe, a transformer oil cooler and a circulating pump which are sequentially communicated in a circulating manner through pipelines; the oil tank, the transformer oil cooler and the circulating pump are arranged in the shell, the transformation device is arranged in the oil tank, the heat exchange pipe is arranged on the inner wall of the shell, the transformer oil cooler is connected with the exhaust fan, and the exhaust fan is used for discharging heat generated by the transformer oil cooler out of the shell.

Preferably, the bottom end of the oil tank is provided with a pad foot, and the bottom end inside the transformer main body is provided with a supporting groove matched with the pad foot.

Preferably, an elastic piece is arranged in the supporting groove.

The invention can obtain the following beneficial effects:

the transformer is designed into a movable structure, and the transformer can be conveniently moved out of the box-type transformer substation when being overhauled through the matching of the guide rail, the roller assemblies and the lifting device, so that the manpower and material resources are greatly saved, the maintenance is convenient, and the working efficiency is high.

According to the invention, the roller is designed into a lifting structure, and the transformer is directly placed on the guide rail, so that the problem that the transformer is not stably installed when placed in a box-type substation through the matching of the roller and the guide rail, and the safety accidents such as sliding, toppling and the like of the transformer are easily caused is avoided.

The invention drives the roller to rotate through the transmission matching of the motor and the transmission shaft, and simultaneously, the transformer can be conveniently moved through the matching of the roller and the guide rail, the moving process is stable in operation, the phenomenon of deviation from the guide rail is avoided, and the moving maintenance efficiency of the transformer is improved.

The locking device is arranged on the moving device of the transformer, the roller can be fixed and limited through the locking device, the roller is kept in a static state, the transformer can be stopped stably and accurately, and meanwhile, non-professional personnel are prevented from operating the transformer. The locking device has simple control principle and operation mode and can realize the automatic locking function.

Drawings

FIG. 1 is a schematic diagram of a transformer for easy access according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of a first driving means and a roller assembly in accordance with a preferred embodiment of the present invention;

FIG. 3 is a schematic structural view of a locking device according to a preferred embodiment of the present invention;

FIG. 4 is a schematic structural view of another locking device according to a preferred embodiment of the present invention;

fig. 5 is a partial side view of the preferred embodiment of the present invention with the guide rails disengaged from the transformer body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, a preferred embodiment of the present invention, a service-convenient transformer, includes: transformer main part 1, elevating gear 2, roller assembly 4 and a plurality of guide rail 5. The lifting device 2 is used for lifting or descending the transformer body 1 so as to enable the transformer body 1 to be separated from or to be matched with the guide rail 5; the roller assembly 4 comprises a telescopic device 42 and a roller 41, the bottom of the transformer body 1 is provided with a groove, and the roller 41 is arranged in the groove through the telescopic device 42; the transformer body 1 can move on the guide rail 5 through the roller assembly 4, when the lifting device 2 lifts the transformer body 1, the telescopic device 42 can extend out to enable the roller 41 to be matched with the guide rail 5, and at the moment, the roller 41 can roll on the guide rail 5; when the retractable device 42 is retracted and the roller 41 is disengaged from the guide rail 5, the transformer body 1 can be lowered to engage the transformer body 1 with the guide rail 5. When the transformer needs to be overhauled, the lifting device 2 lifts the transformer main body 1 to a certain position, the telescopic device 42 extends out to enable the roller 41 to descend to be matched with the guide rail 5, and at the moment, the transformer can be transported out of the box-type substation through the roller 41 to be overhauled; after the maintenance is finished, when the transformer is conveyed to the upper part of the lifting device 2 through the roller 41, the telescopic device 42 contracts to enable the roller 41 to retract into the groove, the lifting device 2 descends to enable the transformer body 1 to be matched with the guide rail 5, and the transformer is placed on the guide rail 5.

The transformer is designed into a movable structure, and the transformer can be conveniently moved out of the box-type transformer substation when being overhauled through the matching of the guide rail, the roller assemblies and the lifting device, so that the manpower and material resources are greatly saved, the maintenance is convenient, and the working efficiency is high. According to the invention, the roller is designed into a lifting structure, and the transformer is directly placed on the guide rail, so that the problem that the transformer is not stably installed when placed in a box-type substation through the matching of the roller and the guide rail, and the safety accidents such as sliding, toppling and the like of the transformer are easily caused is avoided.

In this embodiment, the telescopic device 42 includes a cylinder 43, a piston rod 44 of the cylinder 43 is connected to the roller 41, and the cylinder 43 drives the piston rod 44 to extend and retract so as to achieve the lifting and lowering of the roller 41. In practical applications, the telescopic device 42 may be any other commonly used telescopic device such as a hydraulic telescopic device, an electric telescopic device, a lead screw, and the like, but is not limited thereto.

In the present embodiment, the transformer body 1 is provided with a first driving device 6 for driving the roller 41 to rotate. The first driving device 6 is disposed in a groove at the bottom of the transformer body 1, and includes a transmission shaft 61 and a motor 62 for driving the transmission shaft 61 to rotate, the motor 62 drives the transmission shaft 61 to rotate through a driving gear 63, and the transmission shaft 61 drives the roller 41 to rotate through a chain transmission mechanism 64. The motor 62 and the transmission shaft 61 can realize transmission through the engagement between the driving gear 63 and the first driven gear 65 at the center of the transmission shaft; the two ends of the transmission shaft 61 are provided with second driven gears 66, and the rollers 41 are driven to rotate by the meshing of the chain transmission mechanism 64 and the transmission gears of the rollers 41. Drive gyro wheel 41 through the transmission cooperation of motor 62 with transmission shaft 61 and rotate, simultaneously through the cooperation of gyro wheel 41 with guide rail 5, make the transformer conveniently remove, and remove the process operation stably, can not produce the phenomenon of skew guide rail, promoted the removal maintenance efficiency of transformer. In this embodiment, two rollers 41 are simultaneously driven to rotate by one motor 62, in practical applications, a plurality of rollers 41 may be simultaneously driven to rotate by one motor 62, or a single roller 41 may be driven to rotate by a single motor 62, and the driving gear 63 and the first driven gear 65 may also be engaged by a chain to realize transmission, but are not limited thereto.

In the present embodiment, the driving device 6 is provided with a locking device 7 for restricting the rotation of the driving gear 63, and the roller 41 is fixed by restricting the rotation of the driving gear 63. The locking device can realize the fixed limiting effect on the idler wheel, keep the idler wheel in a static state, stably and accurately stop the transformer, and simultaneously prevent non-professionals from transporting the transformer out of a box-type substation and operating the transformer.

The locking device 7 includes a locking member 71 and a second driving means for driving the locking member 71 to be movable to be inserted into the backlash of the driving gear 63 to thereby restrict the rotation of the driving gear 63, or driving the locking member 71 to be movable to be moved out of the backlash of the driving gear 63 to thereby release the restriction. The second driving device comprises an air cylinder 72, a piston rod 73 of the air cylinder 72 is rotatably connected with a locking connecting rod 74 through a pin shaft, one end of the locking connecting rod 74 is rotatably connected with the locking part 71 through the pin shaft, and the other end of the locking connecting rod 74 is rotatably connected with a positioning column 75 through the pin shaft; the bottom of the transformer body is provided with a cavity 76, and the locking member 71 can move in the cavity 76. One end of the locking piece 71 is in a conical structure and is matched with the shape of the tooth gap of the driving gear 63; the locking connecting rod 74 is of a 7-shaped structure, the positioning column 75 is rotatably connected with the corner of the locking connecting rod 74, and the locking piece 71 and the piston rod 73 are respectively rotatably connected with two ends of the locking connecting rod 74. When the piston rod 73 extends, the locking connecting rod 74 rotates around the positioning column 75, and pushes the locking piece 71 to move out of the cavity 76 and insert into the tooth space of the driving gear 63, so as to limit the rotation of the driving gear 63; when the piston rod 73 is retracted, the lock link 74 pushes the lock member 71 to move into the cavity 76 and move out of the backlash of the drive gear 63 to release the restriction. The second driving device may also be an air cylinder 72 directly disposed in the cavity 76, a piston rod 73 of the air cylinder 72 is connected to the locking member 71, and the locking member 71 is driven to move in the cavity 76 by the extension and retraction of the piston rod 73 to restrict the rotation of the driving gear 63 or release the restriction. The locking device has simple control principle and operation mode and can realize the automatic locking function. In practical applications, the second driving device may be a hydraulic expansion device, an electric expansion device, a lead screw, or other common expansion devices, but is not limited thereto. In practical applications, a locking device may be directly disposed on the roller 41 to directly limit the rotation of the roller 41, so that the roller is in a stationary state, but the invention is not limited thereto.

In the embodiment, the lifting mechanism 2 is a hydraulic lifting column, a pneumatic lifting column or an electromechanical lifting column, and the control principle and operation method are simple, and the lifting efficiency is high, but not limited thereto.

In this embodiment, the roller 41 is a concave wheel, and the guide rail 5 is matched with the concave of the roller 41. In practical applications, the roller 41 may also be a cam, and the guide rail 5 is a groove structure matching with the roller 41, but is not limited thereto.

In this embodiment, the guide rail 5 is provided with a first saw-tooth structure 51 at the terminal end, and the transformer body 1 is provided with a second saw-tooth structure 11 capable of engaging with the first saw-tooth structure 51. When the transformer is installed in the box-type substation, the effect of accurate installation is achieved through meshing of the sawtooth structures. One of the edges of the sawtooth is a vertical edge, so that the sawtooth is accurately installed and has a limiting function, and the transformer is guaranteed not to be displaced during installation.

In the present embodiment, the guide rail 5 is provided with a side fence 52. The side baffles 52 may be disposed outside the two outermost guide rails 5, or may be disposed on both sides of each guide rail 5 and have a height not higher than the height of the guide rail 5, so as to prevent the transformer from shifting and falling.

In this embodiment, the guide rail 5 is provided with a limit stop 53 at the end. Wherein, the height of the limit baffle 53 is higher than that of the first sawtooth structure 51. The limit baffle 53 plays a role in positioning the sawtooth structure on one hand, and on the other hand, can prevent the damage caused by the transformer touching the shell of the box-type substation when being pushed.

In the embodiment, the transformer body 1 comprises the shell 12, the transformer device 13 and the heat dissipation device for dissipating heat of the transformer device 13, so that the damage probability of the transformer due to high temperature is reduced, and the maintenance cost is reduced.

The heat sink comprises a heat dissipation grid 31 arranged on the shell 12, and an oil tank 32, a heat exchange pipe 33, a transformer oil cooler 34 and a circulating pump 36 which are sequentially communicated in a circulating manner through pipelines; an oil tank 32, a transformer oil cooler 34 and a circulation pump 36 are provided in the case 12, the transformer 13 is provided in the oil tank 32, the heat exchanging pipes 33 are provided on the inner wall of the case 12, the transformer oil cooler 34 is connected to a discharge fan 35, and the discharge fan 35 is used for discharging heat generated by the transformer oil cooler 34 out of the case 12. In this embodiment, the heat exchange tubes 33 are disposed on the inner wall of the casing 12, and the heat of the transformer oil is first cooled by the heat exchange tubes 33 and the heat dissipation grids 31, and then is second cooled by the transformer oil cooler 34, so as to achieve rapid cooling. The heat exchange tube 33 may have a corrugated structure, so as to maximize the heat absorption surface and improve the cooling effect.

In this embodiment, the bottom end of the oil tank 32 is provided with a pad 14, and the bottom end inside the transformer body 1 is provided with a supporting groove 15 matched with the pad 14, so as to improve the stability of the transformer 13 inside the transformer. Wherein, can set up elastic component 16 in supporting groove 15, elastic component 16 can be spring, elasticity rubber etc. and the vibration that the transformer produced in the course of the work can be cushioned by elastic component 16 to transformer 13 inside the transformer is protected, avoids equipment to become flexible.

In this embodiment, the lifting device 2, the telescopic device 42, the first driving device 6 and the second driving device are electrically connected to the control device, and the control device automatically controls the actions of the transformer. The whole transformer can be provided with a mechanical interlocking device or an electrical interlocking device, so that non-professional personnel can be prevented from operating the transformer.

The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A transformer convenient to overhaul, comprising: the transformer comprises a transformer main body (1), a lifting device (2), a roller assembly (4) and a plurality of guide rails (5);

the lifting device (2) is used for lifting or descending the transformer main body (1) so as to enable the transformer main body (1) to be separated from or jointed with the guide rail (5);

the roller assembly (4) comprises a telescopic device (42) and a roller (41), a groove is formed in the bottom of the transformer main body (1), the roller (41) is arranged in the groove through the telescopic device (42), and the transformer main body (1) can move on the guide rail (5) through the roller assembly (4);

when the lifting device (2) lifts the transformer main body (1), the telescopic device (42) can extend out to enable the roller (41) to be matched with the guide rail (5), and at the moment, the roller (41) can roll on the guide rail (5); when the telescopic device (42) retracts to enable the roller (41) to be separated from the guide rail (5), the transformer body (1) can descend to enable the transformer body (1) to be matched with the guide rail (5).

2. An easy-to-service transformer according to claim 1, characterized in that the telescopic means (42) comprise a cylinder (43), the piston rod (44) of the cylinder (43) being connected to the roller (41).

3. An easy-to-service transformer according to claim 1, characterized in that the transformer body (1) is provided with a first driving device (6) for driving the rollers (41) to rotate.

4. An easy-to-service transformer according to claim 3, characterised in that the first driving means (6) is arranged in a recess in the bottom of the transformer body (1); the first driving device (6) comprises a transmission shaft (61) and a motor (62) for driving the transmission shaft (61) to rotate, and the transmission shaft (61) drives the roller (41) to rotate through a chain transmission mechanism (64).

5. An easy-to-service transformer according to claim 4, characterized in that the motor (62) drives the transmission shaft (61) to rotate through a driving gear (63), and the driving device (6) is provided with a locking device (7) for limiting the rotation of the driving gear (63).

6. An easy-to-service transformer according to claim 5, wherein the locking device (7) comprises a locking member (71) and a second driving device for driving the locking member (71) to move to be inserted into the backlash of the driving gear (63) so as to limit the rotation of the driving gear (63) or to move out of the backlash of the driving gear (63).

7. An easy-to-service transformer according to claim 1, characterized in that the rollers (41) are concave wheels, and the guide rails (5) match the recesses of the rollers (41).

8. An easy-to-service transformer according to claim 1, characterized in that the guide rail (5) and the transformer body (1) are provided with saw-tooth structures capable of engaging with each other.

9. An easy-to-service transformer according to claim 1, characterized in that the transformer body (1) comprises a housing (12), a transforming device (13) and a heat sink for dissipating heat from the transforming device (13).

10. An easy-to-service transformer according to claim 9, wherein the heat dissipating means comprises a heat dissipating grid (31) provided on the casing (12), and an oil tank (32), a heat exchanging pipe (33), a transformer oil cooler (34) and a circulating pump (36) which are in sequential circulating communication through a pipe; oil tank (32), transformer oil cooler (34) and circulating pump (36) set up in casing (12), transformer device (13) set up in oil tank (32), hot exchange pipe (33) set up on the inner wall of casing (12), exhaust fan (35) is connected in transformer oil cooler (34), exhaust fan (35) be used for with the heat that transformer oil cooler (34) produced is discharged casing (12).