CN202067630U - Current transformer oil drain valve with control valve - Google Patents

Abstract

The utility model provides an oil discharge valve for a current transformer provided with a control valve. A control valve is installed at one end of the connecting pipe, the outer end of the control valve is connected with a top wire, and the end of the control valve opposite to the top wire is provided with a movable external connection; one end of the connecting head is provided with a movable internal connection, and a sealing ring is set on the movable internal connection . There are two sealing rings, which are set side by side on the connecting pipe. Because the control valve is installed on the connecting pipe, the oil discharge amount of the oil discharge valve can be controlled; because two sealing rings are set on the connecting pipe at the connecting end, a complete seal can be achieved to prevent oil leakage. The utility model is suitable for being installed on a current transformer for oil discharge.

Description

Current transformer oil drain valve with control valve

technical field

The utility model provides a current transformer oil discharge valve provided with a control valve for the current transformer oil discharge in the electrical field.

Background technique

The 220kv current transformer usually maintained, the model is LCB7-220W1, is an outdoor type, and the oil weight is 365kg. Due to seasonal changes, the temperature is high and the humidity is high in summer, which can easily cause the current transformer to be damp. Once the water content in the oil is greater than 10uL /L, oil treatment is necessary.

There is no valve on the oil discharge part of the existing current transformer, it is not easy to grasp the oil discharge amount when the oil is discharged, and it is difficult to realize complete sealing of the connected single-channel sealing ring, so oil leakage is prone to occur. Affect the use effect.

When the existing oil drain valve is installed, it is generally carried out under the power failure situation. Because the installation position of the oil drain valve at the lower part of the transformer oil tank is too low, and the oil drain tool is single, the control is often poor, and leakage occurs; and taking an oil sample requires the cooperation of multiple people, which is time-consuming and laborious, and the oil stains on the site are very serious. Uneconomical. As the movable joint rotates back and forth, oil seepage occurs at the joint. Furthermore, there is no valve system to control the amount of oil, which is very inconvenient to use.

Due to the improvement of power supply reliability, operations including oil sample testing can be completed without power failure, so it is urgent to change the original oil extraction method and design and manufacture a simple and easy oil extraction tool.

Contents of the invention

In order to overcome the shortcomings of the existing current transformer oil discharge valve, the utility model provides a current transformer oil discharge valve provided with a control valve. The oil drain valve solves the technical problem of oil drain of the current transformer by installing a control valve on the connecting pipe and setting two sealing rings at the connecting end.

The solution adopted by the utility model to solve the technical problem is: a control valve is installed at one end of the connecting pipe, the outer end of the control valve is connected with a top wire, and the opposite end of the control valve and the top wire is provided with a movable external connection; Connect, and the connecting pipe that is connected in the activity is sleeved with a sealing ring. There are two sealing rings, which are set side by side on the connecting pipe.

Positive effect, because the control valve is installed on the connecting pipe, the oil discharge amount of the oil drain valve can be controlled; because two sealing rings are set on the connecting pipe at the connecting end, a complete seal can be achieved to prevent oil leakage. The utility model is suitable for being installed on a current transformer for oil draining application.

Description of drawings

Fig. 1 is the overall structure diagram of the utility model

Fig. 2 is a structure diagram of the utility model movable internal connection end

Fig. 3 is the structural diagram of the movable external terminal of the utility model

In the figure, 1. connecting pipe, 2. control valve, 3. top wire, 4. movable external connection, 5. connecting head, 6. movable internal connection, 7. sealing ring.

Detailed ways

As shown in the figure, a control valve 2 is installed at one end of the connecting pipe 1, and a top wire 3 is connected to the outer end of the control valve. The end of the control valve opposite to the top wire is provided with a movable external connection 4; , a sealing ring 7 is sleeved on the movable inscribed connecting pipe. There are two sealing rings, which are set side by side on the connecting pipe.

Use of the utility model

When in use, open the oil discharge port of the current transformer, screw the top screw into the oil discharge port, open the oil release valve, the oil will flow out through the connecting pipe, movable inner connection and connector, and when the amount of oil is reached, close the control valve, stop taking oil, and unload the top wire from the oil drain port of the current transformer to complete an oil taking operation.

The connection head can connect the hose to store the drained oil in the oil container.

The inner diameter of the top screw is 8mm, which is used to control the amount of oil ejected. Another thread is connected to the movable joint. The oil volume is controlled by the internal rotation of the movable joint. The external connection of the movable joint is connected with the joint connected to the oil pipeline. After taking the oil, the external connection and the oil delivery pipe can be unloaded first, so as not to rotate together with the first half of the oil discharge valve, so as to achieve complete separation.

A control valve is installed in front of the movable joint, which can effectively control the amount of oil output. In addition, for oil leakage of movable joints, two sealing rubber rings are added to achieve reliable sealing. The total length of the whole set of tools is no more than 250mm.

Advantages of the utility model

1. Save time and effort, and improve work efficiency.

2. You can control the amount of oil taken by yourself to reduce waste.

3. No leakage, no pollution, clean and clean.

The role played by the utility model parts

Top wire: push out the oil in the current transformer;

Control valve: control oil volume;

Active external connection: valve connection;

Activity internal connections: internal and external connections;

Sealing ring: sealing function;

Connecting joint: connect the oil hose.

Claims (1)

1. be provided with the current transformer fuel outlet valve of control valve, it is characterized in that: at tube connector (1) one end control valve (2) is installed, the control valve outer end is connected with jackscrew (3), and the relative end with jackscrew of control valve is provided with movable external (4); Be provided with in the activity at connector (5) one ends and connect (6), be set with sealing ring (7) in the adapter that connects in the activity; Sealing ring is two, is sleeved in the adapter side by side.

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