Gas capacity variable frequency modulation self-excitation oscillation jet stream refrigerating machine

Abstract

The invention provides a variable gas capacity frequency modulation self-oscillation jet flow refrigerating machine and belongs to the gas pressure energy expansion refrigeration field. The whole machine of the invention is totally static, and adopts the combined structure of a reaction-type oscillation fluidic generator and an adopter, the actuation to the jet flow is realized by the compression wave reaction in order to generate the oscillatory wall-attachment jet, unsteady gas expansion refrigeration is realized by the cooperating work of a flow channel component, a regulating mechanism is coupled in a compression wave reaction channel, the switching frequency of the jet wall-attachment oscillation is changed via regulating gas capacity to adapt to different operating conditions, thereby obtaining the highest operating efficiency. The invention has no moving member or dynamic sealing, thereby being particularly suitable for high pressure situations, such as high pressure natural gas deep freezing dehydration, recovering heavy component from high pressure gas mixture and so on. The variable gas capacity frequency modulation self-oscillation jet flow refrigerating machine with higher refrigerating efficiency and lower refrigerating temperature than that of throttling decompression can run with liquid, thereby providing an efficient method and a device for efficient utilization of pressure energy in the combination gas stratum.

Description

technical field [0001] The invention relates to a variable gas capacity frequency modulation self-excited oscillating jet refrigerator, which is a gas refrigeration machine and belongs to the technical field of jet engineering of pressurized gas and gas expansion refrigeration. Background technique [0002] Utilizing expansion refrigeration of pressurized gas can obtain lower low temperature than refrigeration with working medium circulation. Expansion refrigeration technology has been widely used, especially in the fields of oil and gas development and processing. Gas wave refrigerators and heat separators (Chinese patents 87101903.5, 89213744.4, 90222999.0), etc., all belong to unsteady expansion refrigeration, and all rely on motors or use the gas jet reaction force to drive the gas distributor to spin, and the medium gas at a certain speed Sequentially inject jets to the receiving tubes closed at each end in the circumferential direction, and perform unsteady expansion ...

AI Technical Summary

Problems solved by technology

The efficiency of these refrigerators is relatively high, but due to the complex structure, there are many rotating parts, in order to prevent the leakage of gas outside and the leakage of different internal pressure areas, a rotating seal is required, which will reduce the pressure resistance of the machine

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