Multi-nozzle steam jet type heat pump and operation method

Abstract

The invention relates to a multi-nozzle steam jet type heat pump and an operation method. The multi-nozzle steam jet type heat pump comprises a high-pressure driving steam suction chamber, a nozzle fixing plate, a multi-nozzle group, a low-pressure steam chamber and a diffusion pipeline, wherein the high-pressure diving steam suction chamber is formed by welding cylindrical pipes; the nozzle fixing plate is in an arc shape, arranged inside the high-pressure driving steam suction chamber and used for fixing nozzles of the multi-nozzle group; the multi-nozzle group is composed of 3-8 nozzles which are evenly distributed on the arc-shaped nozzle fixing plate and form an included angle with a heat pump axis so as to jet toward a converge point; the low-pressure steam chamber is arranged under the nozzle fixing plate; the diffusion pipeline extends along the steam flowing direction to form a mixed steam outlet; high-pressure steam enters the high-pressure steam suction chamber, and ejecting coefficients are increased by means of effect of the multi-nozzle group, so that pressure of the mixed steam is stabilized, and the problem of energy waste caused by using steam with low pressure as the driving steam is avoided. The multi-nozzle steam jet type heat pump is stable to operate, simple in structure and convenient to manufacture, can be widely applied to industrial operation of heat pump evaporation, steam recovering through high-temperature condensing water, heat pump drying, heat pump rectification, starch ejecting liquefaction, humidifying through overheat steam and the like.

Description

technical field [0001] The invention relates to a novel nozzle steam injection heat pump and its operation method, in particular to a multi-nozzle steam injection heat pump and its operation method, belonging to the technical field of heat pumps. Background technique [0002] The steam jet heat pump is a device that boosts the pressure of low-pressure steam through high-pressure steam. It mainly uses high-pressure steam jets to cause heat exchange between low-pressure steam and high-pressure steam, so as to achieve the purpose of boosting and recycling low-pressure steam. Its functions also include low-pressure Boost recovery and reuse of steam, flash steam and equipment exhaust. At present, the single-nozzle steam injection heat pump used in domestic production must meet the injection coefficient required by the actual industry under the condition of driving steam with relatively high pressure, perform heat exchange, and produce mixed steam. As a result, due to the require...

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Problems solved by technology

As a result, due to the requirements of the heat pump on the injection coefficient, the pressure range of the driving steam used by the single-nozzle heat pump

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