Double-channel self-resetting valve and working method thereof

Abstract

The invention relates to a double-channel self-resetting valve and a working method thereof. The double-channel self-resetting valve comprises a valve body, wherein three fluid channel ports are arranged on the valve body along the periphery and communicate with the inside of the valve body; a torsion spring limiting device sleeves and is fixed on the valve body above the fluid channel ports, andcomprises a cylindrical torsion spring mounting seat; a cylindrical limiting cylinder is coaxially fixed in the torsion spring mounting seat, and is coaxially sleeved with a torsion spring; an arc-shaped limiting groove is formed in the peripheral side of the torsion spring mounting seat, the tail end of the torsion spring is clamped at one end of the arc-shaped limiting groove, and the head end extends outwards from the other end of the arc-shaped limiting groove; a valve core is coaxially inserted into the center of the torsion spring limiting device from top to bottom and extends into the valve body, the top end of the valve core is controlled to rotate by a rotating handle, an L-shaped plate is fixedly connected with the lower surface of the tail end of the rotating handle to form a U-shaped groove, and the U-shaped groove is at the same level with the torsion spring. The double-channel self-resetting valve has reasonable structure, and can achieve self-resetting after switching and prevent oil leakage.

Description

technical field [0001] The invention relates to a double-channel self-resetting valve and a working method thereof. Background technique [0002] During the operation of the oil circuit of most online dissolved gas monitoring devices in transformer oil, it is necessary to install valves to connect the online dissolved gas monitoring devices in transformer oil and take oil samples from the transformer body for real-time oil sample analysis. Take oil samples directly for off-line analysis. However, the following problems often occur in daily operation: [0003] 1. In the daily operation of the valve of the online dissolved gas monitoring device in oil, there will be a certain probability of operational errors, such as forgetting to switch the channel back to the original state after switching the valve in different states, resulting in abnormal operation of the device; [0004] 2. For the online monitoring system of dissolved gas in oil, the sampling port of the oil valve is...

AI Technical Summary

Problems solved by technology

After a long time of operation, the sealing performance of the needle valve is reduced, and oil leakage is prone to occur;

[0005] 3. In the process of operating the valve, such as switching channels, closing the valve, etc., the overall force of the valve will be basically exerted. When the external force is uneven or often affected by external force, there will be a certain probability that each interface of the valve will become loose or loose over time. damage, resulting in oil leakage

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