Pipe coiling machine suitable for double-pipe heat exchanger

Abstract

The invention discloses a pipe coiling machine suitable for a double-pipe heat exchanger. The pipe coiling machine comprises a traction structure which is used for pulling an inner pipe of a sleeve to penetrate into an outer pipe of the sleeve so as to manufacture the sleeve, a driving structure which is used for driving the traction structure to perform traction, a pipe coiling structure which is used for making the sleeve pipe into a sleeve pipe type heat exchanger; and a linkage structure which is used for enabling the pipe coiling structure to be linked under the driving of the driving structure and the traction structure, wherein the traction structure, the driving structure, the pipe coiling structure and the linkage structure are installed in the same horizontal direction. According to the pipe coiling machine, by means of the traction structure, the inner pipe with the small diameter can penetrate into the outer pipe with the large diameter to achieve the function of preparing the sleeve, the sleeve can be made into the needed sleeve type heat exchanger through the pipe coiling structure, and the traction structure and the pipe coiling structure act under the same driving structure.

Description

technical field [0001] The invention belongs to the technical field of coil machines, and in particular relates to a coil machine suitable for casing heat exchangers. Background technique [0002] The helium refrigerator system requires the purity of helium to be maintained above 99.999%. The impurity gas will cause the freezing of the pipeline and affect the heat exchange efficiency of the refrigerator heat exchanger. The particulate impurities will also cause damage to the impeller of the turbo expander. Corrosion damage seriously affects the stable operation of the refrigerator system, and the purifier is used to purify helium to meet the helium purity requirement of more than 99.999% required for the operation of the helium refrigerator. [0003] The purifier consists of a desiccator and a low-temperature adsorption cylinder. The molecular sieve in the low-temperature adsorption cylinder needs to be cooled to the temperature of liquid nitrogen to absorb nitrogen and oxyg...

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Problems solved by technology

[0003] The purifier consists of a desiccator and a low-temperature adsorption cylinder. The molecular sieve in the low-temperature adsorption cylinder needs to be cooled to the temperature of liquid nitrogen to absorb nitrogen and oxygen contained in helium. In order to make full use of the cooling capacity, a copper The sleeve-type heat exchanger is made of high-temperature adsorption cylinder. The impure helium gas at room temperature before the inlet of the low-temperature adsorption cylinder and the cold helium gas purified by the low-temperature adsorption cylinder fully exchange heat in the heat exchanger. There are defects in the coil method of the heater, such as the casing equipment and the coil equipment are two separate sets of equipment, the equipment cost is high, the structure is relatively complicated, and the operation is inconvenient, etc.

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