Circulating heating single-end electrode heating pipe and machining process thereof

Abstract

The invention discloses a circulating heating single-end electrode heating pipe and a machining process thereof. An outer sleeve is included; an inlet guiding pipe of a to-be-heated low temperature medium is arranged at the bottom of the outer sleeve; one end of the upper portion of the outer sleeve is provided with an outlet guiding pipe of high temperature media heated by a heating pipe; an outer shell pipe is arranged in the outer sleeve in a sleeved manner, and one end of the outer shell pipe exceeds the outer sleeve; and a heating cavity is formed between the outer shell pipe and the outer sleeve. According to the circulating heating single-end electrode heating pipe, electrodes are arranged at the single end, the open end of the outer shell pipe is sealed by adopting high temperaturesealing insulating filler, the upper structure can achieve good sealing performance between a cavity in the outer shell pipe and a cavity between the outer shell pipe and the outer sleeve, meanwhile,the electrodes are isolated through an insulating material, and the problems that a power source is in short circuit and connection of the power source is bad are solved.

Description

Technical field [0001] The invention relates to the field of heating technology, in particular to a cyclic heating single-ended electrode heating tube and its processing technology. Background technique [0002] At present, most of the heating wires inside the electric heating tube have a spiral structure, the heat radiation area and heat exchange area are small, and the heat exchange efficiency is not high. In addition, the electrodes of the heating tube are mostly connected at both ends. In the case of liquid or steam, poor sealing will cause leakage of liquid and steam, as well as short circuit of the power supply and inconvenient power connection. Summary of the invention [0003] In order to solve the shortcomings of the prior art, the present invention provides a cyclic heating single-ended electrode heating tube, which can realize heating of a low-temperature medium into a high-temperature medium with high efficiency, safety and reliability. [0004] Circulating heating sing...

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Problems solved by technology

[0002] At present, the electric heating wire inside most electric heating tubes has a spiral structure, the heat radiation area and heat exchange area are small, and the heat exchange efficiency is not high; in addition, the electrodes of the heating tube are mostly connected at both ends. In the case of liquid or steam, poor sealing will lead to leakage of liquid and steam, as well as short circuit of power supply and inconvenient power supply connection.

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