SU800518A1

SU800518A1 - Ammonia-type cooling plant

Info

Publication number: SU800518A1
Application number: SU792752541A
Authority: SU
Inventors: Юрий Владимирович Осипов; Елена Михайловна Федотова; Юрий Васильевич Михайлов; Олег Константинович Щербаков
Original assignee: Ленинградский Технологическийинститут Холодильной Промышленности
Priority date: 1979-04-10
Filing date: 1979-04-10
Publication date: 1981-01-30

Description

(54) АММИАЧНАЯ ХОЛОДИЛЬНАЯ УСТАНОВКА(54) AMMONIA REFRIGERATION INSTALLATION

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Изобретение относитс к холодильной технике, а именно к аммиачньом холодильным установкам, используемым дл отделени масла из жидкого аммиаi a .The invention relates to refrigeration engineering, namely to ammonia refrigeration units used to separate the oil from liquid ammonia a.

Известны аммиачные холодильные установки, содержащие последовательно установленные в замкнутом контуре компрессор, нагнетательный трубопровод паров хладагента, конденсатор, линию жидкого хладагента с дроссельным вентилем,циркул ционный ресивер с насосом, гидроциклон с сборником масла и испаритель 1 .Ammonia refrigeration units are known that contain a compressor sequentially installed in a closed circuit, a refrigerant vapor discharge pipe, a condenser, a liquid refrigerant line with a throttle valve, a circulation receiver with a pump, a hydrocyclone with an oil collector, and an evaporator 1.

Недостатком известных установок вл етс трудность отделени масла из жидкого хладагента, кип щего при температуре ниже -30°С, вследствие примерзани масла к стенкам гидроциклона из-за сильного /повышени в зкости масла.A disadvantage of the known installations is the difficulty of separating the oil from the liquid refrigerant boiling at a temperature below -30 ° C, due to the freezing of the oil on the walls of the hydrocyclone due to a strong / increased oil viscosity.

Цель изобретени - улучшение отделени масла при температурах кипени жидкого хладагента ниже .The purpose of the invention is to improve the separation of the oil at lower boiling points of the liquid refrigerant.

Указанна цель достигаетс тем, что гйдроциклон снабжен тепловой рубашкой с входным и выходным патрубками; нагнетательный трубопровод паров хладагента дополнительно подключен к входному патрубку тепловой рубашки , а ее выходной патрубок подсоединен через дополнительный дроссельный вентиль к испарителю) входной и выходной патрубки тепловой рубашки включены в линию жидкого хладагента между конденсатором и дроссельным вентилем.This goal is achieved in that the hydrocyclone is equipped with a thermal jacket with inlet and outlet connections; The refrigerant vapor discharge pipe is additionally connected to the inlet of the thermal jacket, and its outlet is connected through an additional throttle valve to the evaporator) the inlet and outlet of the thermal jacket are included in the liquid refrigerant line between the condenser and the throttle valve.

На фиг. 1 схематически представлена предлагаема установка, с подсоединением тепловой рубсШ1ки к нагнетательному трубопроводу и через дополнительный дроссельный вентиль - к испарителю , на фиг. 2 - то же, с включением тепловой рубашки в линию 5 жидкого хладагента меноду конденсатором и дроссельным вентилем.FIG. 1 shows a schematic representation of the proposed installation, with the connection of a thermal switch to the discharge pipeline and through an additional throttle valve to the evaporator; FIG. 2 - the same, with the inclusion of a thermal jacket in line 5 of a liquid refrigerant with a condenser and a throttle valve.

Установка содержит компрессор 1, нагнетательный трубопровод 2 паровThe installation contains a compressor 1, discharge pipe 2 vapor

0 хладагента, конденсатор 3, линию 4 жидкого хладагента, дроссельный вентиль 5, циркул ционный ресивер 6, насос 7, гидроциклон В, сборник 9 масла, испаритель 10, тепловую рубашку 11 на гидроциклоне 8 с входным патрубком 12 и выходньм патрубком 13 и дополнительный дроссельный вентиль 14.0 refrigerant, condenser 3, liquid refrigerant line 4, throttle valve 5, circulation receiver 6, pump 7, hydrocyclone B, oil collector 9, evaporator 10, thermal jacket 11 on hydrocyclone 8 with inlet 12 and outlet 13 and additional throttle valve 14.

Claims

The installation works as follows. The refrigerant vapor is sucked from the circulation receiver 6 and injected through conduit 2 to condenser 3, where the vapor is liquefied, and received liquid is sent through line 4 through the throttle valve 5 to the circulation receiver 6 and further is pumped by pump 7 through the cyclone 8 to the evaporator 10 Here, during the production of cold, a vapor-liquid emulsion is formed, dividing further into vapor and liquid in the receiver 6. Part of the refrigerant vapor from line 2 enters through the pipe 12 into the heat jacket 11, where it condenses, heating The hydrocyclone 8, in which oil is recovered from the liquid refrigerant, flows into the collector 9. The liquid forming the jacket 11 flows through the nozzle 13 and the additional throttle valve 14 to the evaporator 10, where it boils together with the main flow of the liquid refrigerant (Fig. 1 ). The entire flow of liquid refrigerant after the condenser 3 through line 4 enters the heat jacket 11 through the pipe 12 and out through the pipe 13 and the throttle valve 5 into the receiver b (Fig. 2). Further, the circulation of liquid refrigerant and separation from its oil in the hydrocyclone 8 occurs as described above. Due to the heating of the hydrocyclone in the first case with condensable refrigerant vapor, and in the second i with warm liquid refrigerant oil, the oil settles on its walls and flows freely into the collector 9. The proposed installation allows to extend the turnaround time of the refrigeration unit due to better separation of oil from the liquid refrigerant Iput -t ta in the hydrocyclone, as well as improve the work of the evaporation system. Claims 1. A refrigeration plant comprising a compressor sequentially installed in a closed loop, a refrigerant vapor discharge pipe, a condenser, a liquid refrigerant line with a throttle valve, a circulation receiver with a pump, a hydrocyclone with an oil collector, and an evaporator, the goal of better oil separation at the boiling point of the liquid refrigerant below -30 ° C, the hydrocyclone is equipped with a thermal jacket with inlet and outlet nozzles.

2. The installation according to claim 1, wherein the discharge pipe of the refrigerant vapor is additionally connected to the inlet of the thermal jacket, and., Its outlet is connected to the evaporator via an additional throttle valve.

3. Installation according to claim 1, characterized in that the inlet and outlet pipes of the thermal jacket are included in the liquid refrigerant line between the condenser and the throttle valve. Sources of information taken into account during the examination 1. Vagabov I.I. and others. Industrial testing of a hydrocyclone for the separation of oil and liquid ammonia. Refrigeration equipment, 1976, 10, p. 41-42.