Comprehensive nitrogen utilization device

Abstract

The invention discloses a comprehensive nitrogen utilization device. The comprehensive nitrogen utilization device comprises a liquid nitrogen storage tank, a high-low temperature test box, an evaporator, an SMT chip mounter and a comprehensive nitrogen utilization device body, wherein the liquid nitrogen storage tank is connected with the high-low temperature test box and the evaporator respectively; the comprehensive nitrogen utilization device body is connected with the high-low temperature test box, the evaporator and the SMT chip mounter respectively; liquid nitrogen in the liquid nitrogen storage tank is changed into nitrogen by virtue of the high-low temperature test box and the evaporator, and then nitrogen is discharged into the comprehensive nitrogen utilization device body to be stored; nitrogen stored in the comprehensive nitrogen utilization device body is supplied to the SMT chip mounter. By virtue of a comprehensive nitrogen utilization system, industrial devices with nitrogen emission and industrial devices requiring using nitrogen are integrated; the utilization and the emission of nitrogen are comprehensively utilized, so that nitrogen source can be effectively saved and the cost is lowered.

Description

technical field [0001] The invention belongs to the field of nitrogen use, and in particular relates to a nitrogen comprehensive utilization device. Background technique [0002] Nitrogen is an inert gas, usually a colorless and odorless gas, and is usually non-toxic. It is often used as a protective gas in industry. High-temperature objects are easily oxidized in the air. If nitrogen is used instead of air, avoid air and high temperature Object contact, then it can avoid oxidation and play a protective role; because nitrogen is a kind of gas, its volume is relatively large and it is inconvenient to transport, nitrogen is generally produced in the form of liquid nitrogen; in industry, liquid nitrogen is obtained by fractional distillation of air , after purifying the air, it is liquefied in a pressurized and cooled environment, separated by the different boiling points of the various components in the air, and then transported to the destination in liquid form. The temperatu...

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Problems solved by technology

[0003] The high and low temperature test chamber is the most common temperature test equipment in the environmental test equipment. This instrument is suitable for the reliability test of high temperature and low temperature of industrial products; The parts and materials of related products such as scientific research units and other related products are tested for their various performance indicators under the condition of high temperature and low temperature cycle changes; the high and low temperature test chamber can create a temperature-controllable environment to simulate the high and low temperatures that may exist in the natural environment Environment, one of the methods is to use liquid nitrogen gasification to absorb heat for refrigeration, and the nitrogen after refrigeration is discharged as waste gas, which is not fully utilized, resulting in waste of resources and costs

[0004] SMT is surface mount technology, which is the most popular technology and process in the electronic assembly industry at present. It compresses traditional electronic components into devices with only a few tenths of the volume, thus realizing high-density, high-density electronic product assembly. High reliability, miniaturization, low cost, and automation of production; SMT is an assembly process technology that uses nitrogen for protection. Usually, the nitrogen used in SMT placement machines is obtained by vaporizing liquid nitrogen, and the effect of liquid nitrogen vaporization and refrigeration is also Not utilized, resulting in waste of energy and cost

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