CN219591236U

CN219591236U - Intelligent transformer evacuation oiling tool equipment

Info

Publication number: CN219591236U
Application number: CN202320390944.9U
Authority: CN
Inventors: 金宝; 黄海涛; 吕东明; 孙希龙; 刘斌; 高键; 夏宝琪
Original assignee: TBEA Shenyang Transformer Group Co Ltd
Current assignee: TBEA Shenyang Transformer Group Co Ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-08-25
Anticipated expiration: 2033-03-06

Abstract

The utility model belongs to the field of transformer oil tanks, in particular to an intelligent transformer vacuumizing oiling tool device, wherein an oil level indicator and a pressure indicator are respectively arranged at the top of a transformer oil tank, a bottom valve is arranged at an oiling port at the bottom of the transformer oil tank in a sealing manner, the bottom valve is connected with an oiling control system through an oiling pipe, and a flowmeter is arranged on the oiling pipe; the oil level indicator is respectively provided with a differential switch A and a micro switch A, the differential switch A is positioned below the micro switch A, and the differential switch A and the micro switch A are connected with the oil injection control system; the pressure display meter is internally provided with a micro switch B which is connected with the vacuum control system. The utility model can well solve the problems that the prior production integral vacuumizing equipment cannot meet the structural size requirement of high-capacity products, the cost of newly purchased products is higher, the one-time qualification rate of the products is low, and the like. The utility model can effectively compress the dead time of the product and has strong universality.

Description

Intelligent transformer evacuation oiling tool equipment

Technical Field

The utility model belongs to the field of transformer oil tanks, and particularly relates to an intelligent vacuumizing oiling tool device for a transformer.

Background

At present, smaller insulation structures of small oil ducts of thin paper cylinders are adopted by various manufacturers in China for manufacturing 35kV box-type transformer products. The structure can meet the insulation performance requirement of the transformer only under the vacuum oiling process. The existing tank type transformer oil tank structure can cause that the original vacuumizing process can not realize vacuum oiling and oiling can not be carried out in a vacuumizing state. Meanwhile, oil is injected in a vacuum state, the oil speed is too high, operators cannot better control the oil level of the transformer in the process, transformer oil backflow is easily caused, and the operation safety of vacuum equipment is endangered.

Disclosure of Invention

Aiming at the problem that the oil injection speed of the tank type transformer oil tank cannot be realized to be too high in vacuum oil injection, the utility model aims to provide an intelligent transformer vacuumizing oil injection tooling device.

The aim of the utility model is realized by the following technical scheme:

according to the utility model, an oil level indicator and a pressure indicator are respectively arranged at the top of a transformer oil tank, a bottom valve is arranged at an oil injection port at the bottom of the transformer oil tank in a sealing way, the bottom valve is connected with an oil injection control system through an oil injection pipe, and a flow velocity meter is arranged on the oil injection pipe; the oil level indicator is respectively provided with a differential switch A and a micro switch A, wherein the differential switch A is positioned below the micro switch A, and the differential switch A and the micro switch A are connected with the oil injection control system; and a micro switch B is arranged in the pressure display meter and is connected with the vacuum control system.

Wherein: the bottom valve and the oil filling port are sealed through an embedded double-sealing structure.

The embedded double-sealing structure is characterized in that a sealing gasket B is embedded in the periphery of the joint of the bottom valve and one side of the connection of the oil filling port, a sealing gasket A is embedded in the periphery of the oil filling port, and sealing is realized between the bottom valve and the oil filling port through the embedded sealing gasket A and the embedded sealing gasket B.

And an electromagnetic valve for automatically adjusting the oiling flow rate is additionally arranged on the oiling pipe.

The oil injection control system comprises a plurality of tool devices, wherein each tool device shares one oil injection control system and one vacuum control system, a differential switch B is arranged at the same height inside a transformer oil tank in each tool device, and each differential switch B is respectively connected with the oil injection control system.

The differential switch B is positioned below an oil level indicator arranged on the transformer oil tank.

The utility model has the advantages and positive effects that:

1. the utility model can well solve the problems that the prior production integral vacuumizing equipment cannot meet the structural size requirement of high-capacity products, the cost of newly purchased products is higher, the one-time qualification rate of the products is low, and the like.

2. According to the utility model, through the arrangement of the valve, the oil speed of the oil injection pipe in a vacuumizing state is controlled, the oil level in the oil tank of the transformer can be well controlled in the oil injection process, and the backflow of the transformer oil is avoided.

3. The utility model can effectively compress the dead time of the product and has strong universality.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the oil filling state of the present utility model;

FIG. 3 is a schematic diagram of the vacuum pumping state of the present utility model;

FIG. 4 is a schematic diagram of a structure of multiple synchronous vacuuming oiling according to the present utility model;

FIG. 5 is a schematic structural view of an embedded dual seal structure of the present utility model;

wherein: the oil level gauge comprises a transformer oil tank 1, an oil level indicator 2, a pressure indicator 3, an oil injection control system 4, a vacuum control system 5, a flow rate meter 6, a bottom valve 7, an oil injection pipe 8, an oil injection port 9, a sealing gasket A10 and a sealing gasket B11.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

As shown in fig. 1-3, the top of a transformer oil tank 1 is respectively provided with an oil level indicator 2 and a pressure indicator 3, the oil injection port 9 at the bottom of the transformer oil tank 1 is provided with a bottom valve 7 in a sealing way, the bottom valve 7 is connected with an oil injection control system 4 through an oil injection pipe 8, and the oil injection pipe 8 is provided with a flow velocity meter 6 to ensure the accuracy of flow velocity measurement; the oil level indicator 2 is respectively provided with a differential switch A and a micro switch A, the differential switch A is positioned below the micro switch A, and the differential switch A and the micro switch A are connected with the oiling control system 4; the pressure display meter 3 is internally provided with a micro switch B which is connected with the vacuum control system 5.

The bottom valve 7 and the oil filling port 9 of the embodiment are sealed by an embedded double-sealing structure. As shown in fig. 5, in the embedded double-seal structure of this embodiment, a sealing pad B11 is embedded in the periphery of the connection part of the bottom valve 7 and the oil filling port 9, a sealing pad a10 is embedded in the periphery of the oil filling port 9, and sealing is achieved between the bottom valve 7 and the oil filling port 9 through the embedded sealing pad a10 and the sealing pad B11.

In this embodiment, an electromagnetic valve is additionally arranged on the oil filling pipe 8, and the oil filling flow rate is automatically adjusted according to the flow rate feedback information.

The oil level indicator 2 of the present embodiment is a conventional float type oil level indicator, and a differential switch a and a micro switch a are mounted on the inner wall of the casing of the oil level indicator 2 from bottom to top. In the process of oiling the transformer oil tank 1 (the oiling flow rate is high at the moment), the float rises along with the oil level, when the float touches the differential switch A, the differential switch A feeds back an information signal to the oiling control system 4, and the oiling control system 4 controls the electromagnetic valve to reduce the oiling flow rate; and oil is continuously injected into the transformer oil tank 1, and when the float touches the micro switch A, the micro switch A feeds back an information signal to the oil injection control system 4 and stops injecting oil into the transformer oil tank 1.

The pressure indicator 3 of the present embodiment is a conventional pointer-type pressure indicator, and the micro switch B is mounted on the inner wall of the housing of the pressure indicator 3. In the process of vacuumizing the transformer oil tank 1, the pointer on the pressure display meter 3 rotates along the dial, and when the vacuum degree reaches a set value, the pointer touches the micro switch B, and the micro switch B feeds back an information signal to the vacuum control system 5.

As shown in fig. 4, the fixture device of the present utility model may be multiple, each fixture device shares one oiling control system 4 and one vacuum control system 5, and differential switches B are respectively disposed at the same height inside the transformer oil tank 1 in each fixture device, and each differential switch B is respectively connected with the oiling control system 4. The differential switch B of the present embodiment is located below the oil level indicator 2 mounted on the transformer tank 1.

The oiling control system 4 and the vacuum control system 5 of the present utility model are both of the prior art, and are not described herein.

The working principle of the utility model is as follows:

in the vacuumizing process of the transformer oil tank 1, the in-situ pressure value is observed through tank top type vacuum pressure. That is, the vacuum degree in the tank is observed through the pressure display gauge 3 installed at the top of the transformer oil tank 1, and when the vacuum degree reaches a required vacuum value, an information signal is fed back to the vacuum control system 5 through the built-in micro switch B, and the vacuum control system 5 controls the transformer oil tank 1 to keep the vacuum degree. In the actual operation process, the vacuum degree can be adjusted at any time according to the actual observed value and the actual stability of the vacuum degree, the stability of the vacuum degree is ensured, and the vacuum effect of the transformer oil tank 1 is improved.

When the vacuum degree in the transformer oil tank 1 reaches a required value, the oiling control system 4 carries out oiling through the bottom valve 7, and the oiling port 9 meets the product vacuum oiling condition through an embedded double-sealing structure. In the oiling start stage, the oiling control system 4 receives feedback information of the vacuum control system 5 and starts oiling into the transformer oil tank 1. In the actual oiling process of the transformer oil tank 1, the oil level is intuitively observed through the oil level indicator 2, and meanwhile, the oil level is controlled through the differential switch A of the oil level indicator 2. When the actual oil level in the transformer oil tank 1 reaches a required value, an information signal can be fed back to the oiling control system 4 through the micro switch A, and oiling work is stopped. At the moment, the oil level can be observed under the stable state of the oil surface through the peripheral oil level observation window, and the oil level can be supplemented according to actual conditions.

In the actual oiling process, the transformer oil tank 1 performs flow rate observation and signal feedback through the flowmeter 6 on the oiling pipe 8, and performs flow rate adjustment through feedback information of the flowmeter 6, so that the transformer oil tank 1 is ensured not to generate bubbles due to too high flow rate in the oiling process. The operator refers to the oil injection process flow rate requirement according to the flow rate of the flow rate meter 6, and adjusts the oil speed through the opening and closing position of the bottom valve 7. The electromagnetic valve can be additionally arranged at the position, the flow speed is automatically adjusted according to the flow speed feedback information, and the intelligent and flow speed control accuracy of the device is improved.

The utility model can synchronously vacuumize and oil injection through the linkage of a plurality of devices. When a plurality of transformer oil tanks 1 are linked, a differential switch B is respectively arranged at the same height in each transformer oil tank 1, and when oil injection of each transformer oil tank 1 is asynchronous, the transformer oil tanks are not started and stopped at the same time, but are respectively controlled by themselves according to the oil levels of the transformer oil tanks; the differential switch B in the fast oil injection transformer tank 1 is triggered and fed back to the oil injection control system 4, the oil injection control system 4 only temporarily stops the oil injection in the transformer tank 1, and after the differential switches B in other transformer tanks 1 are triggered, the oil injection is started simultaneously to be respectively injected into the respective transformer tanks 1.

Claims

1. Intelligent transformer evacuation oiling tool equipment, its characterized in that: an oil level indicator (2) and a pressure indicator (3) are respectively arranged at the top of a transformer oil tank (1), a bottom valve (7) is arranged at an oil injection port (9) at the bottom of the transformer oil tank (1) in a sealing manner, the bottom valve (7) is connected with an oil injection control system (4) through an oil injection pipe (8), and a flow velocity meter (6) is arranged on the oil injection pipe (8); the oil level indicator (2) is respectively provided with a differential switch A and a micro switch A, the differential switch A is positioned below the micro switch A, and the differential switch A and the micro switch A are both connected with the oil injection control system (4); the pressure display meter (3) is internally provided with a micro switch B, and the micro switch B is connected with the vacuum control system (5).

2. The intelligent transformer vacuumizing oiling tool device according to claim 1, wherein: the bottom valve (7) and the oil filling port (9) are sealed through an embedded double-sealing structure.

3. The intelligent transformer vacuumizing oiling tool device according to claim 2, wherein: the embedded double-sealing structure is characterized in that a sealing gasket B (11) is embedded in the periphery of a joint of one side, connected with the oil filling port (9), of the bottom valve (7), a sealing gasket A (10) is embedded in the periphery of the oil filling port (9), and sealing is achieved between the bottom valve (7) and the oil filling port (9) through the embedded sealing gasket A (10) and the sealing gasket B (11).

4. The intelligent transformer vacuumizing oiling tool device according to claim 1, wherein: an electromagnetic valve for automatically adjusting the oiling flow rate is additionally arranged on the oiling pipe (8).

5. The intelligent transformer vacuumizing oiling tool device according to claim 1, wherein: the oil injection control system comprises a plurality of tool devices, wherein each tool device shares one oil injection control system (4) and one vacuum control system (5), differential switches B are arranged at the same height inside a transformer oil tank (1) in each tool device, and each differential switch B is connected with the oil injection control system (4) respectively.

6. The intelligent transformer evacuation oiling tool device of claim 5, wherein: the differential switch B is positioned below an oil level indicator (2) arranged on the transformer oil tank (1).