Compressed gas refrigerated dryer heat exchanging water removal structure

Abstract

The invention provides a compressed gas refrigerated dryer heat exchanging water removal structure which can improve the problems that the existing equipment is not impact in structure, and poor in gas and water separating effect and can cause ice blockage easily, and the inlet and outlet differential pressure of compressed gas is large. The compressed gas refrigerated dryer heat exchanging waterremoval structure comprises a first pipe vertically arranged, and a second pipe arranged in the first pipe, wherein the bottom of the second pipe is not in contact with the bottom of the first pipe; agas-liquid separation cavity is formed between the first pipe and the second pipe; a liquid collecting cavity is formed in the bottom of the gas-liquid separation cavity; a refrigerating cavity is formed in the second pipe and is provided with a refrigerating source outlet and a refrigerating source inlet; the refrigerating cavity communicates with a gas inlet; the compressed gas refrigerated dryer heat exchanging water removal structure further comprises one or more third pipes; one end of the third pipe communicates with the external world and serves as a gas outlet; the other end of the third pipe communicates with the upper part of the liquid collecting cavity; the gas enters from the gas inlet, is cooled through the refrigerating cavity and is subjected to gas-water separation through the gas-liquid separation cavity, then, condensate separates out and flows to the liquid collecting cavity, and the gas is discharged out of the gas outlet through the third pipe.

Description

technical field [0001] The invention relates to the technical field of gas dryers, in particular to a heat exchange and water removal structure of a compressed gas refrigeration dryer. Background technique [0002] The heat exchange structures of existing compressed air dryers mainly include the following categories: The first category is the heat exchange structure of general refrigerated dryers, such as Image 6 As shown, 1a-cooling and heat exchanger, 2a-evaporator, 3a-gas-liquid separator are made of separate barrels, the structure is complicated, the production is complicated, and the volume is huge. The evaporator adopts copper-aluminum fin type or stainless steel fin type. Heater, the fin gap is small, the condensate is easy to freeze in the evaporator, resulting in ice blockage. The second type, plate or plate-fin type cold dryer heat exchanger, such as Figure 7 As shown, this heat exchange structure has the following problems: 1. Aluminum plate-fin heat exchangers...

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Problems solved by technology

[0002] The heat exchange structures of existing compressed air dryers mainly include the following categories: The first category is the heat exchange structure of general refrigerated dryers, such as Image 6 As shown, 1a-cooling and heat exchanger, 2a-evaporator, 3a-gas-liquid separator are made of separate barrels, the structure is complicated, the production is complicated, and the volume is huge. The evaporator adopts copper-aluminum fin type or stainless steel fin type. Heater, the fin gap is small, the condensate is easy to freeze in the evaporator, resulting in ice blockage

The second type, plate or plate-fin type cold dryer heat exchanger, such as Figure 7 As shown, this heat exchange structure has the following problems: 1. Aluminum plate-fin heat exchangers or stainless steel plate heat exchangers are used for cold and heat exchange and evaporators, and the welding joints are easy to leak and cannot be repaired; 2. The plates are thin , is also easy to corrode and perforate and cannot be repaired; 3. Due to the small size, the gas-liquid separation effect is not good; if an external gas-liquid separator is installed, the compact structure cannot be achieved; 4. The gap between the plates is small, and it is easy to be dirty. Blockage, the accumulation of more dirt will affect the heat transfer effect, and the resistance will increase, making the pressure difference between the inlet and outlet of the compressed air more and more large, and the condensate is easy to freeze in the evaporator to block the compressed air channel, resulting in ice blockage Phenomenon; 5. The production is complicated, only professional plate or plate-fin heat exchanger manufacturers can make it, and the cost is high

The third category is a cold dryer with a cold heat exchanger and an evaporator built in a bucket, such as Figure 8 As shown in the figure: a-refrigerant inlet, b-refrigerant outlet, h-air inlet, i-air outlet, g-spiral tube, e-filter net, f-evaporator, the evaporator uses copper and aluminum fins Type or stainless steel fin heat exchanger, this structure has the following problems: 1) the fin gap is small, the condensate is easy to freeze in the evaporator, resulting in ice blockage; 2) there is no special gas-liquid separation device, and It relies on natural gravity to separate the liquid, the liquid is easily taken away by the air flow, and the gas-liquid separation effect is not good; 3) The production precision is high, the production process is complicated, and the cost is high

[0003] To sum up, the heat exchange structure of existing compressed air dryers is not ideal

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