Oil injection device for oil-immersed transformer

Abstract

The utility model discloses an oil-immersed transformer oiling device which comprises an oil storage tank, the inner wall of the oil storage tank is communicated with a funnel, the lower surface of the funnel is communicated with an outer sleeve, the inner surface of the outer sleeve is fixedly connected with an inner pipe, the inner pipe is provided with a plurality of oil inlets, the lower surface of the oil storage tank is communicated with a connecting pipe, and the connecting pipe is provided with an electromagnetic valve. The lower end of the connecting pipe is communicated with a water pump, the output end of the water pump is communicated with a hose, the other end of the hose is fixedly connected with a filling head, the inner wall of the inner pipe is fixedly connected with a middle-hole filter screen, the inner wall of the inner pipe is fixedly connected with a small-hole filter screen, and the middle-hole filter screen is located above the small-hole filter screen. Impurities are prevented from entering the transformer to affect operation of the transformer, and after the transformer is used, the impurities on the small-hole filter screen and the middle-hole filter screen can be flushed away from the filter screens through backflushing water flow, so that the filtering performance of the filter screens is recovered.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil -immersed transformer technical field, in particular to a kind of oil -immersed transformer oil injection device. BACKGROUND

[0002] The existing oil -immersed transformer oil injection device, usually by oil tank and oil filling component, mainly for injecting insulating oil into oil -immersed transformer, the insulating oil in oil -immersed transformer is an important insulating medium, it can fill the space inside transformer, the live parts such as winding and core and transformer shell and other parts are effectively isolated, prevent the discharge phenomenon between different potential components.

[0003] But in its use, the existing device lacks filter structure, cannot effectively intercept different impurities, in the oil injection process, impurities in oil, such as metal chips, etc. It is easy to enter the inside of transformer with oil, under high electric field intensity, metal impurities can cause partial discharge, reduce the insulation performance of transformer. UTILITY MODEL CONTENTS

[0004] The utility model is provided with a kind of oil -immersed transformer oil injection device, which can filter the oil to be extracted and injected by the middle hole filter screen and the small hole filter screen on the inner tube, the middle hole filter screen can intercept relatively larger impurity particles, and the small hole filter screen can further filter smaller impurities, prevent these impurities from entering the inside of transformer, affect the operation of transformer, after use, the sealing ring is lifted by the electric push rod to close the oil inlet of the inner tube and open the dirt outlet, water is filled into the connecting pipe by the flushing pipe, and the water will be upwardly flushed, the water flow of backflushing can easily flush the impurities on the small hole filter screen and the middle hole filter screen away from the filter screen, the impurities will enter the bottom of oil tank through the dirt outlet and the drain outlet, and then be discharged by the drain pipe, to prevent more impurities from accumulating on the filter screen, and realize the cleaning of filter screen to restore the filtering performance of filter screen.

[0005] The utility model discloses still provide with above-mentioned oil -immersed transformer oil injection device, include: oil storage tank, the inner wall of oil storage tank is connected with funnel, the lower surface of funnel is connected with outer sleeve, the inner surface of outer sleeve is fixedly connected with inner tube, be provided with a plurality of oil inlet on the inner tube, the lower surface of oil storage tank is connected with connecting pipe, be provided with electromagnetic valve on connecting pipe, the lower end of connecting pipe is connected with water pump, the output of water pump is connected with hose, the other end of hose is fixedly connected with filling head, the inner wall of inner tube is fixedly connected with medium -sized hole filter screen, the inner wall of inner tube is fixedly connected with small hole filter screen, medium -sized hole filter screen is located the top of small hole filter screen, the lateral surface of connecting pipe is connected with water filling pipe, be provided with the dirt outlet on the inner tube, the dirt outlet is located the top of medium -sized hole filter screen, be provided with the sliding groove between inner tube and outer sleeve, the inner surface of sliding groove is fixedly connected with electric push rod, the upper end of electric push rod is fixedly connected with sealing ring, sealing ring is movably connected with oil inlet and dirt outlet, be provided with the dirt outlet on the outer sleeve, the lower surface of oil storage tank is connected with dirt outlet pipe.

[0006] According to the oil -immersed transformer oil injection device of the utility model, the side surface of oil storage tank is connected with frame, and the inner wall of frame is fixedly connected with window.

[0007] According to the oil -immersed transformer oil injection device of the utility model, the upper surface of oil storage tank is movably connected with tank cover, and the upper surface of tank cover is fixedly connected with handle.

[0008] According to the oil -immersed transformer oil injection device of the utility model, the side surface of oil storage tank is fixedly connected with support frame, and support frame is movably connected with hose.

[0009] According to the oil -immersed transformer oil injection device of the utility model, the side surface of oil storage tank is fixedly connected with side plate, and the lower surface of side plate is fixedly connected with support leg.

[0010] According to the oil -immersed transformer oil injection device of the utility model, the lower surface of support leg is rotatably connected with rotating shaft, and the side surface of rotating shaft is fixedly connected with support.

[0011] According to the oil -immersed transformer oil injection device of the utility model, the inner surface of support is rotatably connected with rotating wheel, and the outer surface of rotating wheel is fixedly connected with anti -skid sleeve.

[0012] According to the oil -immersed transformer oil injection device of the utility model, the outer wall of water filling pipe is fixedly connected with connecting flange, and the connecting hole is set up on the connecting flange.

[0013] Beneficial effects

[0014] 1、Compared with the prior art, the oil-immersed transformer oil injection device can filter the oil to be extracted and injected through the middle hole filter screen and the small hole filter screen on the inner tube, the middle hole filter screen can intercept relatively large impurity particles, and the small hole filter screen can further filter out smaller impurities, preventing the impurities from entering the inside of the transformer and affecting the operation of the transformer, after use, the sealing ring is driven upward by the electric push rod to close the oil inlet of the inner tube and open the dirt outlet, water is filled into the connecting pipe through the water flushing pipe, the water flows upward, the water flow can easily flush the impurities on the small hole filter screen and the middle hole filter screen away from the filter screen, and the impurities will enter the bottom of the oil storage tank through the dirt outlet and the drain outlet and then be discharged by the drain pipe, preventing too many impurities from accumulating on the filter screen and restoring the filtering performance of the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further explained in connection with the drawings and examples;

[0016] Figure 1 It is the front view structural drawing of the utility model oil-immersed transformer oil injection device;

[0017] Figure 2 It is the cross section structure drawing of the utility model oil-immersed transformer oil injection device;

[0018] Figure 3 It is the bottom view structural drawing of the utility model oil-immersed transformer oil injection device;

[0019] Figure 4 It is the right view structural drawing of the utility model oil-immersed transformer oil injection device.

[0020] Legend:

[0021] 1, tank cover;2, frame;3, oil storage tank;4, side plate;5, support leg;6, connecting flange;7, connecting hole;8, anti-skid sleeve;9, runner;10, electromagnetic valve;11, handle;12, support frame;13, canning head;14, hose;15, water pump;16, rotating shaft;17, bracket;18, inner tube;19, connecting pipe;20, oil inlet;21, chute;22, dirt outlet;23, drain outlet;24, electric push rod;25, water filling pipe;26, hopper;27, outer sleeve;28, sealing ring;29, middle hole filter screen;30, small hole filter screen;31, drain pipe. DETAILED DESCRIPTION

[0022] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Referring to Figures 1-4 The utility model discloses an oil -immersed transformer oil injection device, it includes: oil storage tank 3 for storing oil, the lateral surface of oil storage tank 3 is connected with the frame 2 through, the inner wall of frame 2 is fixedly connected with the window, the upper surface of oil storage tank 3 is movably connected with the tank cover 1, the upper surface of tank cover 1 is fixedly connected with the handle 11, the lateral surface of oil storage tank 3 is fixedly connected with the support frame 12, support frame 12 is movably connected with the hose 14, the lateral surface of oil storage tank 3 is fixedly connected with the side plate 4, the lower surface of side plate 4 is fixedly connected with the support leg 5, the lower surface of support leg 5 is rotatably connected with the pivot 16, the lateral surface of pivot 16 is fixedly connected with the support 17, the inner surface of support 17 is rotatably connected with the runner 9, the outer surface of runner 9 is fixedly connected with the antiskid sleeve 8, the inner wall of oil storage tank 3 is communicated with the hopper 26, the lower surface of hopper 26 is communicated with the outer sleeve 27 for communicating hopper 26.

[0024] The inner surface of outer sleeve 27 is fixedly connected with the inner tube 18 for conveying oil, a plurality of oil inlets 20 are arranged on the inner tube 18 for making the oil in oil storage tank 3 into the inner tube 18, the lower surface of oil storage tank 3 is communicated with the connecting pipe 19, the connecting pipe 19 is provided with solenoid valve 10 for closing connecting pipe 19, the lower end of connecting pipe 19 is communicated with water pump 15, the output end of water pump 15 is communicated with the hose 14, the other end of hose 14 is fixedly connected with the filling head 13 for inserting into the oil injection port of oil -immersed transformer and injecting, the inner wall of inner tube 18 is fixedly connected with the medium -sized mesh 29 for intercepting relatively larger impurity particles, the inner wall of inner tube 18 is fixedly connected with the small -sized mesh 30 for further filtering smaller impurities, the medium -sized mesh 29 is located above the small -sized mesh 30, the lateral surface of connecting pipe 19 is communicated with the water filling pipe 25 for filling water in connecting pipe 19, when solenoid valve 19 is closed, water will be upwardly backflushed, thereby washing off the impurities on the surface of medium -sized mesh 29 and small -sized mesh 30.

[0025] The outer wall of water filling pipe 25 is fixedly connected with the connecting flange 6, the connecting flange 6 is provided with connecting hole 7, the inner tube 18 is provided with the dirt outlet 22 for discharging impurities from the inner tube 18, the dirt outlet 22 is located above the medium -sized mesh 29, the inner tube 18 and outer sleeve 27 are provided with the sliding groove 21, the inner surface of sliding groove 21 is fixedly connected with the electric push rod 24, the upper end of electric push rod 24 is fixedly connected with the sealing ring 28 for closing dirt outlet 22 when being below, closing oil inlet 20 when being above, the sealing ring 28 is movably connected with oil inlet 20 and dirt outlet 22, the outer sleeve 27 is provided with the dirt outlet 23 for discharging impurities to the bottom of oil storage tank 3, the lower surface of oil storage tank 3 is communicated with the dirt outlet pipe 31 for discharging the impurities at the bottom of oil storage tank 3.

[0026] Working principle: in use, through the electric push rod 24 drive sealing ring 28 down, thereby closed out of sewage mouth 22 open oil inlet 20, open electromagnetic valve 10, open water pump 15, can be into the oil tank 3 in the oil pumping hose 14, then through the filling head 13 into the transformer inside, during filling, using the hole filter screen 29 can filter out the slightly larger impurities in the oil, using the small hole filter screen 30 can filter out the tiny impurities in the oil, so that the oil is more pure.

[0027] The above embodiment of the present application is described in detail in combination with the drawings, but the present application is not limited to the above embodiment, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the present application.

Claims

1. An oil-immersed transformer oil filling device characterized by comprising: The utility model relates to an oil storage tank, which comprises an oil storage tank (3), a funnel (26) communicated with the inner wall of the oil storage tank (3), a outer sleeve (27) communicated with the lower surface of the funnel (26), an inner tube (18) fixedly connected with the inner surface of the outer sleeve (27), a plurality of oil inlets (20) arranged on the inner tube (18), a connecting pipe (19) communicated with the lower surface of the oil storage tank (3), an electromagnetic valve (10) arranged on the connecting pipe (19), a water pump (15) communicated with the lower end of the connecting pipe (19), a hose (14) communicated with the output end of the water pump (15), a canning head (13) fixedly connected with the other end of the hose (14), a medium mesh filter screen (29) fixedly connected with the inner wall of the inner tube (18), a small mesh filter screen (30) fixedly connected with the inner wall of the inner tube (18), wherein the medium mesh filter screen (29) is located above the small mesh filter screen (30). A water filling pipe (25) is communicated with the side surface of the connecting pipe (19), an outlet (22) for dirt is arranged on the inner tube (18) and located above the medium mesh filter screen (29), a sliding groove (21) is arranged between the inner tube (18) and the outer sleeve (27), an electric push rod (24) is fixedly connected with the inner surface of the sliding groove (21), a sealing ring (28) is fixedly connected with the upper end of the electric push rod (24), the sealing ring (28) is movably connected with the oil inlets (20) and the outlet (22) for dirt, a dirt outlet (23) is arranged on the outer sleeve (27), and a dirt discharge pipe (31) is communicated with the lower surface of the oil storage tank (3). A frame (2) is connected with the side surface of the oil storage tank (3), and a window is fixedly connected with the inner wall of the frame (2).

2. The oil-immersed transformer oil filling device according to claim 1, characterized in that, A lid (1) is movably connected with the upper surface of the oil storage tank (3), and a handle (11) is fixedly connected with the upper surface of the lid (1).

3. The oil-immersed transformer oil filling device according to claim 1, characterized in that, A support frame (12) is fixedly connected with the side surface of the oil storage tank (3), and the support frame (12) is movably connected with the hose (14).

4. The oil-immersed transformer oil filling device according to claim 1, characterized in that, A side plate (4) is fixedly connected with the side surface of the oil storage tank (3), and a supporting leg (5) is fixedly connected with the lower surface of the side plate (4).

5. The oil-immersed transformer oil filling device according to claim 1, characterized in that, A rotating shaft (16) is rotatably connected with the lower surface of the supporting leg (5), and a bracket (17) is fixedly connected with the side surface of the rotating shaft (16).

6. The oil-immersed transformer oil filling device according to claim 5, characterized in that, A rotating wheel (9) is rotatably connected with the inner surface of the bracket (17), and an anti-skid sleeve (8) is fixedly connected with the outer surface of the rotating wheel (9).

7. The oil filling device for oil-immersed transformer according to claim 6, characterized in that, A connecting flange (6) is fixedly connected with the outer wall of the water filling pipe (25), and a connecting hole (7) is arranged on the connecting flange (6).

8. The oil-immersed transformer oil filling device according to claim 1, characterized in that, ​

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