Rotor type expansion energy saver for carbon dioxide transcritical cycle

Abstract

The invention discloses a rotor type expansion energy saver for carbon dioxide transcritical cycle in the technical field of carbon dioxide transcritical cycle. The rotor type expansion energy saver comprises an expansion energy saver body, an expansion cylinder air inlet pipe and an electromagnetic valve, wherein the expansion cylinder air inlet pipe is fixedly arranged on the outer wall of the left side of the expansion energy saver body, the expansion cylinder air inlet pipe comprises an outer pipe fixedly connected with the outer wall of the left side of the expansion energy saver body, aninner pipe is arranged in an inner cavity of the outer pipe, the right end of the inner pipe communicates with the outer wall of the left side of the expansion energy saver body, and supporting devices are uniformly arranged between the outer wall of the inner pipe and the inner wall of the outer pipe. According to the rotor type expansion energy saver, a telescopic spring stretches out and drawsback, so that a moving rod and a moving plate move, a buffering effect is achieved, the pressure caused by supercritical high-pressure carbon dioxide fluid entering the inner pipe to the inner wall of the inner pipe is reduced, the inner pipe is protected, the probability that the inner pipe is deformed due to the extrusion of high-pressure gas is reduced, and the service life of the expansion cylinder air inlet pipe is prolonged.

Description

technical field [0001] The invention relates to the technical field of carbon dioxide transcritical cycle, in particular to a rotor type expansion economizer for carbon dioxide transcritical cycle. Background technique [0002] The refrigerants commonly used in the traditional refrigeration industry are chlorofluorocarbons and hydrochlorofluorocarbons, which are easy to cause damage to the ozone layer. In order to increase the environmental protection performance of the refrigeration and air-conditioning industry, carbon dioxide is used as a refrigerant to replace the traditional refrigeration method through a transcritical cycle. It is still difficult to realize the carbon dioxide transcritical refrigeration cycle in industrial technology. In order to improve the performance of the carbon dioxide transcritical cycle and reduce the irreversible loss in the process, in the carbon dioxide transcritical refrigeration cycle, the rotor expansion energy saving is generally used. T...

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Problems solved by technology

[0002] The refrigerants commonly used in the traditional refrigeration industry are chlorofluorocarbons and hydrochlorofluorocarbons, which are easy to cause damage to the ozone layer. In order to increase the environmental protection performance of the refrigeration and air-conditioning industry, carbon dioxide is used as a refrigerant to replace the traditional refrigeration method through a transcritical cycle. It is still difficult to realize the carbon dioxide transcritical refrigeration cycle in industrial technology. In order to improve the performance of the carbon dioxide transcritical cycle and reduce the irreversible loss in the process, in the carbon dioxide transcritical refrigeration cycle, the rotor expansion energy saving is generally used. The throttle valve is replaced by a throttle valve to reduce energy loss. When the rotor-type expansion economizer is in use, the supercritical high-pressure carbon dioxide fluid enters the high-pressure chamber of the rotor-type expansion economizer from the intake pipe, but the supercritical high-pressure carbon dioxide fluid will carry a relatively high High pressure will squeeze the inner wall of the intake pipe. After long-term use, the intake pipe of the rotor-type expansion economizer may be deformed, resulting in damage to the intake pipe. Because the intake pipe is generally welded to the rotor-type expansion economizer, resulting in The damaged intake pipe is difficult to replace, which affects the service life of the rotor-type expansion economizer. Therefore, we propose a rotor-type expansion economizer for carbon dioxide transcritical cycle

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