CN205104330U - Oil -immersed transformer's automatic oiling device - Google Patents

Abstract

The utility model relates to an automatic refueling device for an oil-immersed transformer, comprising an oil storage tank, a pressurization channel, a pressure piston, a first one-way air intake valve, an oil outlet, an oil outlet conduit, a check valve, a hose and an outlet valve. The oil nozzle, the pressurized channel is set on the top of the oil storage tank, and its upper end extends out of the oil storage tank, and its lower end extends into the oil storage tank. The pressure piston is sealed and attached to the inner wall of the pressurized channel, and can move up and down along the pressurized channel. The first unit The air inlet valve is set on the top of the oil storage tank, the oil outlet is set on the top of the oil storage tank, one end of the oil outlet conduit goes through the oil outlet and extends into the bottom of the oil storage tank, and the other end extends out of the oil storage tank, and the check valve is set on the top of the oil storage tank. The oil outlet conduit extends out of the end of the oil storage tank, one end of the hose communicates with the check valve, and the oil outlet nozzle is installed at the other end of the hose. Advantages: simple structure, convenient use, simple operation, safety and sanitation, high work efficiency and low use cost.

Description

An automatic refueling device for an oil-immersed transformer

technical field

The utility model relates to a refueling device for a transformer, in particular to an automatic refueling device for an oil-immersed transformer.

Background technique

In power grid operation and maintenance, transformer oil plays the role of insulating and cooling the high and low voltage components in the oil-immersed transformer. During the operation of the transformer, the transformer oil in the distribution transformer gradually increases with the operating load and the temperature rises. High impact will lead to the gradual reduction of the oil reserve in the transformer. When the oil reserve drops below the standard level, a series of safety hazards will be caused to the operation of the transformer, and the insulation and cooling standards will not be met, which will easily affect the transformer. service life, or even damage the transformer, serious cases will cause fire and other unsafe accidents.

Therefore, in the operation and maintenance of the power grid, it is necessary to replenish the amount of oil in the transformer in a timely manner. The traditional refueling method mostly uses tools such as oil pots and funnels for refueling, which has the following defects: 1) Many people are required to cooperate when refueling, but the transformer The upper space is limited, the operation is relatively crowded, and it is difficult to control the safety distance, which has potential safety hazards; 2) The oil pot and funnel are heavy, and they need to be dumped when refueling, the operation is complicated and difficult, and the labor intensity is high; 3) The refueling process Among them, the transformer oil is not fully sealed, which can easily lead to the incorporation of magazines, thereby reducing the quality of the transformer oil and affecting the normal use and service life of the transformer; 4) When refueling, the amount of refueling should not be controlled, and it is easy to overflow, resulting in waste of resources. It will pollute the surface of the transformer, affect its normal operation, and bring inconvenience to subsequent cleaning; 5) the efficiency of refueling is low, and the labor input cost is high.

Utility model content

The technical problem to be solved by the utility model is to provide an automatic refueling device for an oil-immersed transformer, which effectively solves the problem of large manual investment, high cost, difficult operation and high labor intensity when refueling the transformer in the traditional technology. , the work efficiency is low, and there are potential safety hazards.

The technical scheme of the utility model for solving the above-mentioned technical problems is as follows: an automatic refueling device for an oil-immersed transformer, including an oil storage tank, a pressurized channel, a pressure piston, a first one-way air intake valve, an oil outlet, an oil outlet conduit, Check valve, hose and oil nozzle, the above-mentioned pressurized passage is set on the top of the oil storage tank, and its upper end extends out of the oil storage tank, and its lower end extends into the oil storage tank. The above-mentioned pressure piston is sealed and attached to the inner wall of the pressurized passage, and can Moving up and down along the pressurized channel, the first one-way air intake valve is set on the top of the oil storage tank, the oil outlet is set on the top of the oil storage tank, and one end of the oil outlet conduit passes through the oil outlet and extends into the bottom of the oil storage tank , the other end extends out of the oil storage tank, the check valve is set at the end of the oil outlet conduit extending out of the oil storage tank, one end of the hose communicates with the check valve, and the oil outlet nozzle is installed at the other end of the hose.

Further, the above-mentioned pressure piston includes a piston cake and a piston connecting rod. The above-mentioned piston cake is sealed and attached to the inner wall of the pressurization channel. The above-mentioned piston connecting rod is vertically arranged, and its lower end is connected to the middle position of the upper end of the piston cake, and its upper end extends out of the above-mentioned pressurization channel. Inside, the above-mentioned piston connecting rod can drive the above-mentioned piston cake to move up and down along the inner wall of the pressurized channel.

Further, a sealing plug is sheathed on the above-mentioned piston connecting rod, and the above-mentioned sealing plug is screwed and installed at the upper port of the above-mentioned pressurized channel, and the above-mentioned piston connecting rod can slide up and down along the sealing plug.

Further, a handle is fixed on the top of the piston connecting rod.

Further, an air intake cavity is opened in the side wall of the above-mentioned oil storage tank, and the upper end of the above-mentioned air intake cavity is connected to the inside of the oil storage tank through a second one-way air intake valve, and a base is provided at the bottom of the above-mentioned oil storage tank, and an air pump is installed inside the base, The air outlet of the air pump is connected to the lower end of the air intake cavity, the air inlet of the air pump is connected to the outside of the base, and a power supply is provided in the base, and the power supply is connected to the air pump through a line.

Further, hanging buckles are respectively arranged on the upper and lower sides of the exterior of the above-mentioned oil storage tank, and straps are connected between the above-mentioned upper and lower hanging buckles.

The beneficial effects of the utility model are:

1) Move the oil discharge point from the transformer stand to the ground, and pour the transformer oil into a sealed container, replacing the traditional hand-held and rope-hanging methods, which saves manpower and is safe and hygienic;

2) Use a booster device to press out the transformer oil with high pressure, which reduces labor intensity and is easy to operate;

3) Use the hose and the oil outlet device to send the oil into the oil filling hole of the transformer, without using the funnel by hand, the amount of oil is easy to control, and the situation of waste is eliminated;

The whole device has the advantages of simple structure, convenient use, simple operation, safety and sanitation, high work efficiency and low use cost.

Description of drawings

Fig. 1 is the structural representation of the automatic refueling device of the oil-immersed transformer of the present utility model;

Fig. 2 is the sectional structure schematic diagram of the automatic refueling device of the oil-immersed transformer of the present invention;

Fig. 3 is an enlarged view of part A in Fig. 2 .

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Oil storage tank, 2. Pressurization channel, 3. Pressure piston, 4. First one-way intake valve, 5. Oil outlet, 6. Oil outlet conduit, 7. Check valve, 8. Hose, 9 , oil nozzle, 11, air intake cavity, 12, second one-way air intake valve, 13, base, 14, air pump, 15, power supply, 16, hanging buckle, 17, strap, 31, piston cake, 32, Piston connecting rod, 33, sealing plug, 34, handle.

detailed description

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

Embodiment: As shown in Figures 1 to 3, the automatic refueling device of the oil-immersed transformer in this embodiment includes an oil storage tank 1, a pressurized channel 2, a pressure piston 3, a first one-way intake valve 4, and an oil outlet 5 , an oil outlet conduit 6, a check valve 7, a flexible pipe 8 and an oil outlet nozzle 9, the above-mentioned pressurized channel 2 is arranged on the top of the oil storage tank 1, and its upper end stretches out of the oil storage tank 1, and its lower end extends into the oil storage tank 1. The above-mentioned The pressure piston 3 is tightly attached to the inner wall of the pressurized passage 2 and can move up and down along the pressurized passage 2. The above-mentioned first one-way intake valve 4 is set on the top of the oil storage tank 1, and the above-mentioned oil outlet 5 is set on the top of the oil storage tank 1 One end of the above-mentioned oil outlet conduit 6 passes through the oil outlet 5 and extends into the inner bottom of the above-mentioned oil storage tank 1, and the other end extends out of the oil storage tank 1. At the outer end, one end of the above-mentioned hose 8 is connected to the check valve 7, the above-mentioned oil nozzle 9 is installed on the other end of the hose 8, and the above-mentioned first one-way air intake valve 4 prevents gas leakage in the oil storage tank 1, and can pass through the The one-way valve replenishes gas into the oil storage tank 1, and the check valve 7 effectively prevents oil from flowing back into the oil storage tank 1.

The above-mentioned pressure piston 3 includes a piston cake 31 and a piston connecting rod 32. The above-mentioned piston cake 31 is tightly attached to the inner wall of the pressurization channel 2. The above-mentioned piston connecting rod 32 is vertically arranged, and its lower end is connected to the middle position of the upper end of the piston cake 31, and its upper end extends Out of the pressurization channel 2 , the piston connecting rod 32 can drive the piston cake 31 to move up and down along the inner wall of the pressurization channel 2 .

A sealing plug 33 is sheathed on the piston connecting rod 32 , and the sealing plug 33 is screwed and installed at the upper port of the pressurizing channel 2 , and the piston connecting rod 32 can slide up and down along the sealing plug 33 .

A handle 34 is fixed on the top of the piston connecting rod 32 .

There is an air intake cavity 11 in the side wall of the above-mentioned oil storage tank 1, and the upper end of the above-mentioned air intake cavity 11 is connected to the inside of the oil storage tank 1 through the second one-way air intake valve 12. The bottom of the above-mentioned oil storage tank 1 is provided with a base 13, and the base 13 An air pump 14 is installed inside, the air outlet of the air pump 14 is connected to the lower end of the intake cavity 11, the air inlet of the air pump 14 is connected to the outside of the base 13, and a power supply 15 is also provided in the base 13, and the power supply 15 is connected to the above-mentioned The air pump 14 and the above-mentioned second one-way air intake valve 12 effectively prevent the gas in the oil storage tank 1 from leaking through the air intake cavity 11 and effectively maintain the air pressure in the oil storage tank 1 .

Hanging buckles 16 are provided on the upper and lower sides of the oil storage tank 1 , and straps 17 are connected between the upper and lower hanging buckles 16 .

During the use of the automatic refueling device of the oil-immersed transformer of this embodiment, put the oil nozzle 9 into the refueling port of the transformer, then hold the handle 33 and push the piston connecting rod 32 up and down repeatedly, so that the piston cake 31 is aligned with the inside of the oil storage tank 1. The gas is squeezed, and then the oil in the oil storage tank 1 is introduced into the hose 8 through the oil outlet conduit 6, and finally enters the transformer through the oil outlet 9; The internal pressurization makes the oil flow out. The specific process is that the air pump 14 is running, and the air flows from the air inlet of the air pump 14 to the air outlet, and then enters the oil storage tank 1 through the air intake cavity 11 in the side wall of the oil storage tank 1. Pressurize the oil storage tank 1, and the oil will flow from the high pressure oil storage tank to the low pressure oil storage tank under the action of air pressure.

The automatic oiling device of the oil-immersed transformer of the utility model has the advantages of simple structure, convenient use, simple operation, safety and sanitation, high work efficiency and low use cost.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. the automatic fuelling device of an oil-filled transformer, it is characterized in that: comprise fuel reserve tank (1), pressurization passageway (2), pressure piston (3), first breather cheek valve (4), oil-out (5), oil out duct (6), check-valves (7), flexible pipe (8) and oil outlet (9), described pressurization passageway (2) is arranged on fuel reserve tank (1) top, and fuel reserve tank (1) is stretched out outward in its upper end, lower end is stretched in fuel reserve tank (1), described pressure piston (3) sealing paste is combined in pressurization passageway (2) inwall, and can move up and down along pressurization passageway (2), described first breather cheek valve (4) is arranged on fuel reserve tank (1) top, described oil-out (5) is arranged on fuel reserve tank (1) top, described oil out duct (6) one end is passed oil-out (5) and is stretched to described fuel reserve tank (1) inner bottom part, the other end stretches out fuel reserve tank (1) outward, described check-valves (7) is arranged on described oil out duct (6) and stretches out fuel reserve tank (1) end outward, described flexible pipe (8) one end is communicated with check-valves (7), described oil outlet (9) is arranged on flexible pipe (8) other end.

2. the automatic fuelling device of a kind of oil-filled transformer according to claim 1, it is characterized in that: described pressure piston (3) comprises piston cake (31) and piston rod (32), described piston cake (31) sealing paste is combined in pressurization passageway (2) inwall, described piston rod (32) is vertically arranged, its lower end connects piston cake (31) centre position, upper end, its upper end is stretched out in described pressurization passageway (2), and described piston rod (32) can drive described piston cake (31) to move up and down along pressurization passageway (2) inwall.

3. the automatic fuelling device of a kind of oil-filled transformer according to claim 2, it is characterized in that: described piston rod (32) is arranged with sealing plug (33), described sealing plug (33) screws and is arranged on described pressurization passageway (2) port, upper end, and described piston rod (32) can slide up and down along sealing plug (33).

4. the automatic fuelling device of a kind of oil-filled transformer according to claim 3, is characterized in that: described piston rod (32) top is fixed with handle (34).

5. the automatic fuelling device of a kind of oil-filled transformer according to any one of Claims 1-4, it is characterized in that: in described fuel reserve tank (1) sidewall, have air inlet cavity (11), it is inner that described air inlet cavity (11) upper end is communicated with fuel reserve tank (1) by the second breather cheek valve (12), described fuel reserve tank (1) bottom is provided with base (13), air pump (14) is installed in described base (13), described air pump (14) gas outlet is communicated with air inlet cavity (11) lower end, it is outside that described air pump (14) air inlet is communicated with base (13), power supply (15) is also provided with in described base (13), described power supply (15) is by air pump described in connection (14).

6. the automatic fuelling device of a kind of oil-filled transformer according to any one of Claims 1-4, it is characterized in that: described fuel reserve tank (1) outside upper and lower is respectively equipped with and buckles (16), described upper and lower buckling between (16) is connected with braces (17).