Device and method for heating butterfly valve

Abstract

The invention discloses a device and method for heating a butterfly valve, and belongs to the technical field of mechanical engineering. According to the device for heating the butterfly valve, an omega-shaped groove is processed on the side surface of a lug boss in a valve body close to the sealing surface of the butterfly plate and the valve body. A heating pipe is arranged in the groove, and two heating pipe holes are formed in the middle part of the side surface of the valve body and on the same plane with the groove. Guide lines are respectively led out from the heating pipe and straightsections at two ends of the heating pipe, and the guide lines are connected with an external power supply. The heating pipe is attached to the valve body by the heating pipe fixing the nut and sealedby a heating pipe gasket. A counter bored hole is arranged on the side surface of an inner lug boss in the middle part of the other side of the valve body, and the valve body is provided with an outward hole which penetrates through the valve body. The outer surface of the valve body is welded with a thermocouple connecting base, and the thermocouple penetrates through a thermocouple joint and thevalve body from outside to inside and is inserted into the counter bored hole to be jointed with the valve body for measuring the temperature of the valve body. When the heating pipe is electrified and heated, the temperature of the valve body reaches the required temperature and the butterfly valve can be opened, the power supply can be cut off. The device for heating the butterfly valve has theadvantages of compact structure and easy operation, thereby troubleshooting online, guaranteeing the operation of system, and improving the working efficiency and the safety performance.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, and relates to a device and method for heating a butterfly valve. Background technique [0002] At present, in many chemical systems, butterfly valves are often used as fluid control components due to their advantages such as short structural length, light weight, and high cost performance, and are relatively common valves. In pipelines for gas transportation, including vacuum pipelines, butterfly valves are the most commonly used valves. [0003] In a certain chemical reaction system, the product of the reaction is a mixture of various gases, including iodine, which is a condensable gas at room temperature. This iodine vapor is a gas at high temperature, becomes liquid and solid as the temperature drops, and becomes a hard solid at normal temperature. The gas circulation pipeline is equipped with a butterfly valve to control the flow. After long-term operation, iodine vapor will...

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Problems solved by technology

[0005] The invention provides a butterfly valve heating device and method, which solves the problem that the butterfly valve installed in the pipeline containing condensable gas cannot be ope

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