Transformer oiling device

Abstract

The utility model provides a transformer oiling device, belongs to the technical field of transformer oiling, and aims to solve the problems that in the prior art, the oiling amount is inconvenient to adjust, and the oiling amount is difficult to adjust and control in the actual transformer production process, the transformer oiling device comprises an oil storage tank and an oiling barrel, and the bottom of the oil storage tank is communicated with the bottom of the oiling barrel through an oil inlet pipe; an oil outlet pipe is further arranged at the bottom of the oil injection barrel, the oil inlet pipe and the oil outlet pipe are provided with a first one-way valve and a second one-way valve respectively, the first one-way valve can only allow liquid to flow to the oil injection barrel from the oil storage tank, and the second one-way valve can only allow the liquid to flow out of the oil injection barrel; the piston is arranged in the oil injection barrel and used for pumping and draining liquid, and the driving device is used for providing power for movement of the piston in the oil injection barrel.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer oil filling, and more specifically, relates to a transformer oil filling device. Background Art

[0002] A transformer oil injector is a device used to add insulating oil to a transformer. Its main function is to inject insulating oil into the transformer to ensure that there is always enough insulating oil inside the transformer to ensure insulation performance and heat dissipation effect.

[0003] For example, a transformer oil filling device with application number CN201510620980.X is used to facilitate the replenishment of transformer oil in a transformer. A running wheel is provided at the bottom of the vehicle body, a lifting plate is slidably installed in a first groove on the left side of the vehicle body, and a lifting assembly is provided between the lifting plate and the bottom of the first groove to drive the lifting plate up and down. A liquid storage tank is placed on the lifting plate, and a cylinder is provided in a second groove on the right side of the vehicle body. A lug is fixed to the free end of the cylinder piston rod, a telescopic rod is hingedly installed on the lug, and a top screw is provided between the telescopic rod and the lug. A water pump is provided on the vehicle body, an oil inlet pipe is provided between the suction end of the water pump and the liquid storage tank, an oil outlet pipe is provided at the liquid outlet end of the water pump, an oil pipe clamp is provided at the free end of the telescopic rod, a nozzle is provided on the oil pipe clamp, the nozzle is connected to the oil outlet pipe, and a valve is provided on the nozzle. This solution can be used to fill oil into transformers to reduce labor intensity, but there are still shortcomings that need to be improved.

[0004] Based on the search of the above patents and in combination with the equipment in the prior art, it is found that the oil injection amount in the prior art is not easy to adjust. In the actual transformer production process, the oil injection amount is difficult to control.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and a transformer oil filling device is provided to achieve a purpose with greater practical value. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a transformer oil filling device to solve the problem that the oil filling amount in the prior art is not easy to adjust and is difficult to control in the actual transformer production process.

[0007] The purpose and effect of the transformer oil filling device of the utility model are achieved by the following specific technical means:

[0008] A transformer oil filling device, comprising:

[0009] An oil storage tank and an oil filling cylinder, wherein the bottom of the oil storage tank is connected to the bottom of the oil filling cylinder via an oil inlet pipe, and an oil outlet pipe is further provided at the bottom of the oil filling cylinder. The oil inlet pipe and the oil outlet pipe are respectively provided with a first one-way valve and a second one-way valve, wherein the first one-way valve only allows liquid to flow from the oil storage tank to the oil filling cylinder, and the second one-way valve only allows liquid to flow out of the oil filling cylinder;

[0010] A driving device and a piston, wherein the piston is disposed in the oil filling cylinder for pumping liquid, and the driving device is used to provide power for the piston to move in the oil filling cylinder;

[0011] The oil filling cylinder is provided with a glass window, and the glass window has scale lines distributed in the longitudinal direction.

[0012] Furthermore, the driving device includes a motor fixedly connected to the oil storage tank, a gear transmission connected to the motor, a rack meshing with the gear, and a slide plate fixedly connected to the oil storage tank, the rack is slidingly connected to the slide plate, the lower end of the rack is connected to the piston, and the rack and slide plate are vertically arranged.

[0013] Furthermore, the piston includes a plug plate fixedly connected to the lower end of the rack and a rubber ring clamped to the outer periphery of the plug plate, and the rubber ring is in contact with the inner wall of the oil filling cylinder.

[0014] Furthermore, a third one-way valve is provided at the oil outlet end of the oil outlet pipe, and a hook body is fixedly connected to the oil outlet pipe near the third one-way valve.

[0015] Furthermore, an oil inlet is provided on the upper portion of the oil storage tank, and a cover body threadedly connected to the oil inlet is also provided.

[0016] Furthermore, four universal wheels are provided at the bottom of the oil storage tank.

[0017] Furthermore, a handle is fixedly connected to the top of the oil storage tank.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The utility model is provided with an automatically retractable piston for draining transformer insulating oil, so that the piston draws the insulating oil in the oil storage tank into the oil filling cylinder. Since the oil filling cylinder is provided with observable scale lines, the amount of insulating oil entering the oil filling cylinder can be accurately controlled, so that a determined amount of insulating oil is discharged from the oil outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a three-dimensional structural diagram of a transformer oil filling device.

[0021] Figure 2The utility model is a partial cross-sectional structural schematic diagram of a transformer oil filling device.

[0022] Figure 3 The utility model is a partially cutaway three-dimensional structural diagram of a piston, a motor, a gear and a rack assembly of a transformer oil filling device.

[0023] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0024] Oil storage tank 11, oil filling cylinder 12, glass window 121, scale line 122, piston 13, plug plate 131, rubber ring 132, oil inlet pipe 14, first one-way valve 141, oil outlet pipe 15, second one-way valve 151, third one-way valve 152, drive device 16, motor 161, gear 162, rack 163, slide plate 164, hook body 17, oil inlet 18, cover body 19, universal wheel 20, handle 21. DETAILED DESCRIPTION

[0025] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] Example:

[0029] As attached Figure 1 To the attached Figure 3 As shown:

[0030] The utility model provides a transformer oil filling device, comprising:

[0031] The oil storage tank 11 and the oil filling cylinder 12 are connected to each other through an oil inlet pipe 14 at the bottom of the oil storage tank 11. An oil outlet pipe 15 is provided at the bottom of the oil filling cylinder 12. The oil inlet pipe 14 and the oil outlet pipe 15 are respectively provided with a first one-way valve 141 and a second one-way valve 151. The first one-way valve 141 only allows liquid to flow from the oil storage tank 11 to the oil filling cylinder 12, and the second one-way valve 151 only allows liquid to flow out of the oil filling cylinder 12.

[0032] A driving device 16 and a piston 13, wherein the piston 13 is disposed in the oil filling cylinder 12 for pumping liquid, and the driving device 16 is used to provide power for the piston 13 to move in the oil filling cylinder 12;

[0033] The oil filling cylinder 12 is provided with a glass window 121 , and the glass window 121 has scale lines 122 distributed in the longitudinal direction.

[0034] In this embodiment, an automatically retractable piston 13 is provided for draining the transformer insulating oil. The piston 13 draws the insulating oil from the oil storage tank 11 into the oil filling cylinder 12. The oil filling cylinder 12 is provided with a visible scale line 122. This ensures precise control of the amount of insulating oil entering the oil filling cylinder 12, thereby discharging a predetermined amount of insulating oil from the oil outlet pipe 15.

[0035] The driving device 16 includes a motor 161 fixedly connected to the oil storage tank 11, a gear 162 transmission-connected to the motor 161, a rack 163 meshing with the gear 162, and a slide plate 164 fixedly connected to the oil storage tank 11. The rack 163 is slidably connected to the slide plate 164, the lower end of the rack 163 is connected to the piston 13, and the rack 163 and the slide plate 164 are vertically arranged.

[0036] The motor 161 drives the gear 162 to rotate, thereby driving the rack 163 to move up and down along the slide plate 164 through the gear 162. The rack 163 is connected to the piston 13, so that the rack 163 can drive the piston 13 to move up and down.

[0037] The piston 13 includes a plug plate 131 fixedly connected to the lower end of the rack 163 and a rubber ring 132 clamped to the outer periphery of the plug plate 131 . The rubber ring 132 contacts the inner wall of the oil filling cylinder 12 .

[0038] The outer periphery of the rubber ring 132 is in close contact with the inner peripheral wall of the oil filling cylinder 12 , so that the rubber ring 132 moves up and down, thereby being able to suck in and discharge the insulating oil.

[0039] A third one-way valve 152 is provided at the oil outlet end of the oil outlet pipe 15 , and a hook body 17 is fixedly connected to the oil outlet pipe 15 near the third one-way valve 152 .

[0040] The arrangement of the third one-way valve 152 and the second one-way valve 151 can form a space for accommodating insulating oil therebetween, which is filled with insulating oil during use. When the device is filled with oil, since its oil outlet pipe 15 is filled with insulating oil, there is no need to first fill the gap between the third one-way valve 152 and the second one-way valve 151, and the oil can be directly injected, thereby reducing the error of the oil injection. At the same time, after the oil injection is completed, a small amount of insulating oil is not enough to open the third one-way valve 152, which can limit the outflow of insulating oil to a certain extent.

[0041] An oil inlet 18 is provided on the upper portion of the oil storage tank 11 , and a cover 19 threadedly connected to the oil inlet 18 is also provided.

[0042] The oil inlet 18 is provided to facilitate the injection of insulating oil into the oil storage tank 11, thereby allowing for measurement within the device. To avoid negative pressure in the oil storage tank 11 after oil is pumped out, a one-way valve is installed on the side wall of the oil storage tank 11 to ensure that gas can enter the oil storage tank 11 and balance the reduced gas pressure after oil is pumped out.

[0043] Four universal wheels 20 are provided at the bottom of the oil storage tank 11 .

[0044] The arrangement of four universal wheels 20 facilitates the movement of the device and makes it more convenient to use in a factory.

[0045] A handle 21 is fixedly connected to the top of the oil storage tank 11. The setting of the handle 21 is convenient for the user to push the device to move.

[0046] The specific usage and function of this embodiment are as follows:

[0047] When the utility model is in use, insulating oil can be continuously injected into the oil inlet 18 from the outside for temporary storage, so that the piston 13 can continuously suck the insulating oil. After the piston 13 moves upward under the action of the driving device 16, the oil inlet pipe 14 will suck the insulating oil at the bottom of the oil storage tank 11. Then, after the piston 13 moves downward under the action of the driving device 16, the insulating oil is discharged from the second one-way valve 151, the oil outlet pipe 15 and the third one-way valve 152 in sequence until it is discharged.

[0048] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A transformer oil filling device, characterized in that: include: An oil storage tank (11) and an oil filling cylinder (12), wherein the bottom of the oil storage tank (11) is connected to the bottom of the oil filling cylinder (12) through an oil inlet pipe (14), and an oil outlet pipe (15) is further provided at the bottom of the oil filling cylinder (12). The oil inlet pipe (14) and the oil outlet pipe (15) are respectively provided with a first one-way valve (141) and a second one-way valve (151), wherein the first one-way valve (141) can only allow liquid to flow from the oil storage tank (11) to the oil filling cylinder (12), and the second one-way valve (151) can only allow liquid to flow out of the oil filling cylinder (12); A driving device (16) and a piston (13), wherein the piston (13) is arranged in the oil filling cylinder (12) for pumping liquid, and the driving device (16) is used to provide power for the piston (13) to move in the oil filling cylinder (12); The oil filling cylinder (12) is provided with a glass window (121), and the glass window (121) has scale lines (122) distributed in the longitudinal direction.

2. A transformer oil filling device according to claim 1, characterized in that: The driving device (16) comprises a motor (161) fixedly connected to the oil storage tank (11), a gear (162) transmission-connected to the motor (161), a rack (163) meshed with the gear (162), and a chute plate (164) fixedly connected to the oil storage tank (11); the rack (163) is slidably connected to the chute plate (164); the lower end of the rack (163) is connected to the piston (13); and the rack (163) and the chute plate (164) are vertically arranged.

3. A transformer oil filling device according to claim 2, characterized in that: The piston (13) comprises a plug plate (131) fixedly connected to the lower end of the rack (163) and a rubber ring (132) clamped to the outer periphery of the plug plate (131), and the rubber ring (132) contacts the inner wall of the oil injection cylinder (12).

4. A transformer oil filling device according to claim 1, characterized in that: The oil outlet end of the oil outlet pipe (15) is provided with a third one-way valve (152), and a hook body (17) is fixedly connected to the oil outlet pipe (15) near the third one-way valve (152).

5. The transformer oil filling device according to claim 1, characterized in that: The upper portion of the oil storage tank (11) is provided with an oil inlet (18), and is also provided with a cover (19) threadedly connected to the oil inlet (18).

6. A transformer oil filling device according to claim 1, characterized in that: Four universal wheels (20) are provided at the bottom of the oil storage tank (11).

7. A transformer oil filling device according to any one of claims 1 to 6, characterized in that: A handle (21) is fixedly connected to the top of the oil storage tank (11).

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