CN201281150Y - Oil-guide hood for pressure-relief valve of transformer - Google Patents

Abstract

The utility model discloses an oil guide cover for a pressure release valve of a transformer, which comprises a cover body covered with a pressure release valve, and one side of the cover body is provided with an oil injection interface, which is characterized in that the oil injection interface is a flange type interface , the lower periphery of the cover body is connected with a transition flange, and the transition connection between the pressure relief valve and the original installation flange is realized through the transition flange. The utility model is especially suitable for the traditional pressure release valve which is already in operation and is an aviation plug, so that the installed early pressure release valve can be technically transformed at low cost to meet the needs of environmental protection.

Description

Oil guide cover for pressure release valve of transformer

technical field

The utility model relates to an oil guiding cover used for a pressure release valve of a transformer.

Background technique

The early pressure relief valve did not have a directional oil injection device (such as an oil guide cover). When the transformer fails and causes the pressure relief valve to operate, the transformer oil will splash everywhere, polluting the environment and wasting valuable transformer oil. Contaminated transformers need to be cleaned. In order to solve this problem, the pressure release valves used on the large transformers are now equipped with oil guide covers integrated with them. Therefore, the pressure release valve equipped with a supporting oil guide cover must be adjusted when the product is produced and used as a whole. Therefore, it is not possible to use this kind of oil guide cover on the traditional pressure relief valve that is already in operation.

Contents of the invention

The purpose of this utility model is to provide an improved pressure release valve oil guide cover, which is especially suitable for the traditional pressure release valve that is already in operation and has a signal switch and a display indicator rod, so that the installed early pressure release valve can be released. Low-cost technical transformation of the valve meets the needs of saving and environmental protection.

In order to achieve the above object, the utility model is realized by taking the following technical solutions:

An oil guide cover for a pressure release valve of a transformer, comprising a cover body covered with a pressure release valve, one side of the cover body is provided with an oil injection port, characterized in that the oil injection port is a flange type interface, and the lower part of the cover body There is a transition flange on the peripheral connection, through which the transition connection between the pressure relief valve and the original installation flange is realized.

In the above solution, the pressure release valve is equipped with a signal switch and a manual reset device, and an operating hand hole is opened on the side wall of the cover opposite to the manual reset device. A hole is opened on the top of the cover body for the extension of the alarm rod.

The utility model has the advantage that the transition connection with the pressure release valve and the original installation flange can be realized by setting the transition flange. Simultaneously, because the oil guide cover covers the signal switch of the pressure release valve in the cover, it can effectively prevent the switch from being drenched by rainwater. The oil injection interface is changed to a flange type interface, which can be consistent with other flange pipe connection forms of the transformer. A hand hole is opened on the side wall, so that it can easily realize manual reset after the pressure release valve operates. Through the above improvement measures, the utility model can carry out low-cost technical transformation to the installed early pressure release valve, and meets the need of environmental protection.

Description of drawings

Fig. 1 is a front sectional view of the oil guide cover of the pressure relief valve of the present invention (including the pressure relief valve).

FIG. 2 is a top view of FIG. 1 .

From Figure 1 to Figure 2: 1. Valve body; 2. Spring; 3. Alarm rod; 4. Cover body; 5. Signal switch; 6. Original installation flange of pressure relief valve; 7. Transition flange; 8. Transformer Fuel tank wall; 9. Manual reset device; 10. Operating hand hole; 11. Alarm lever hole; 12. Fuel injection interface.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

As shown in Fig. 1 and Fig. 2, a transformer pressure release valve oil guide cover includes a cover body 4 covered with a pressure release valve, the pressure release valve is equipped with a signal switch 5 and a manual reset device 9, and the inner diameter of the cover body 4 can be The signal switch 5 and the manual reset device 9 are accommodated. One side of the cover body is provided with an oil injection interface 12, which is a flanged interface that is easy to install on site. A transition flange 7 with multiple installation diameter holes is connected to the lower periphery of the cover body, through which the transition connection with the pressure relief valve and the original installation flange 6 can be easily realized. There is an operating hand hole 10 on the side wall of the cover body 4 opposite to the manual reset device. The top of the cover body has an alarm rod hole 11 for extending the alarm aluminum rod.

Claims (4)

1. An oil guide cover for a transformer pressure release valve, comprising a cover body covered with a pressure release valve, one side of the cover body is provided with an oil injection interface, characterized in that the oil injection interface is a flange type interface, and the A transition flange is connected to the lower periphery of the cover body, and the transition connection between the pressure relief valve and the original installation flange is realized through the transition flange. 2. The transformer pressure release valve oil guide cover according to claim 1, wherein the pressure release valve is equipped with a signal switch and a manual reset device. 3. The transformer pressure release valve oil guide cover according to claim 2, wherein an operating hand hole is opened on the side wall of the cover body opposite to the manual reset device. 4. The transformer pressure relief valve oil guide cover according to claim 2, wherein a hole is opened at the top of the cover for the alarm rod to extend out.

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