SU1208427A1 - Refrigerating plant - Google Patents

Description

The invention relates to refrigeration and can be used in the petrochemical, gas, food and other industries.

The purpose of the invention is to increase efficiency by increasing the degree of cooling of superheated refrigerant vapor.

Figure 1 is a diagram of the proposed refrigeration unit (for simplicity, it does not show a compressor, an evaporator, and a control valve); 2 shows the structure of the cooler.

The refrigeration unit is made with air-cooled condensers 1, which are connected in series with receiver 2 and pump 3. Before air-cooled condensers 1, a collector 4 is installed with a stand 5, the collector being installed, with a slope of 5-7 in the direction of the stand. from the compressor there is a cooler 6, made in the form of an i-shaped pipeline 7, the branches 8 of which have perforations 9, Moreover, the branches 8 are placed in separate casings 10 filled with a nozzle 11 and having liquid collections 12 in the lower part, which separated from the nozzle 11 by a perforated partition 13. Inside each branch 8 a liquid manifold 14 with nozzles 15 is placed. In the lower part of the cooler 6, a drainage receiver 16 with a circulation pump 17 is installed. pipe 18, and to liquid collectors 12. through pipes 19. Reuiser 2 is connected via a liquid pipe 20 with a valve 21 to collectors 14, to which a circulation outlet is also connected via valves 22 and 23 Asosa 17. When the pump 3 is installed a valve 24, and the pump 3 itself is provided with a bypass 25 with a valve 26. The riser 5 manifold 4 is connected via a conduit 27 with a check valve 28 to the drain 16 reviseru Ox1) aditel 6 is connected to one capacitor line 29.

Refrigeration unit operates as follows.

The refrigerant vapor through the heating pipe of the compressor enters the chiller 6, where intensive vapor cooling takes place. The non-evaporating part of the liquid is discharged through pipe 18 to the drainage receiver 16. Pump 17 carries out the return of the liquid to the branches 8 of the cooler 6 through the valves 22 and 23 .. From the branches B, steam enters the collector 4 and then from the upper points of the latter

it is sampled in air cooled condensers 1.

However, there may be a liquid phase in the steam flow after the cooler 6. To drain the fluid collector 4

set obliquely. After collector 4 through one hundred to five, non-return valve 28 and pipe 27, the liquid enters receiver 16 for reuse in chiller 6. After condensation in air-cooled condensers 1, liquid refrigerant flows through descending pipe into receiver 2 (or one hundred to a diameter of 200-250 mm) 5 serving for separating steam, fixing the liquid level and the stability of the operation of the pump 3. The liquid after the pump 3 and the valve 24 is distributed into two streams: one is directed to the refrigeration evaporator

installation, the other - on the liquid pipeline 20 to the cooler 6.

Cooling the refrigerant vapor in the cooler 6 is as follows. Through the heating pipe, steam from the compressor flows to the cooler 6, namely to its right branch 8. At the same time, liquid from the condenser 1 and the drainage receiver 16 through the collector 14 is injected with nozzles 15 into this branch 8 against the main vapor flow. The liquid coming from the condenser 1 I.1 of the drainage receiver 16 has a lower temperature than

cooled vapor flow. Liquid falling on. the surface of the perforated pipe branches 8, flows through the perforation 9 to the heat exchange nozzle 11, and then drain through

the partition 13 in the collection of 12 fluid. After the right branch 8, steam together with the liquid is directed to the left branch 8. In the lower part of the pipeline 7 there is a separation of the liquid

from the main steam flow, which is diverted through conduit 18 to the drainage receiver 16. In the left branch 8, contact heat exchange processes

 312084274

similar to the processes in the right no.8, only small 8 may be present. At the steam exit from the left wat dispersed liquid.

8ucnopu- 211 gtelniyu toetenu

From ifOff- npsfcofio

(Editor M. Dylyn

Compiled by V.Dobrotvortsev

Tehred O. Vashchishin Proofreader A.T.

2AO / 51 Circulation: 483 GP.

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, Proektna St., 4

Claims (2)

1. REFRIGERATING INSTALLATION, comprising a circulation circuit in which a compressor, a cooler, a condenser, a receiver, a control valve and an evaporator are installed in series, the receiver being connected to the cooler by means of a liquid pipe, characterized in that, in order to increase efficiency by increasing the degree of cooling of superheated vapors refrigerant, the installation additionally contains a bypass pump installed after the receiver, and a drainage receiver with a circulation pump, and the cooler is made in the form of a U-image pipeline with perforated branches located in separate casings filled with a nozzle and having a liquid collector in the lower part, while the drainage receiver is connected to a cooler at the base of the U-shaped pipeline and its fluid collectors, and a collector is additionally placed inside each branch of the mentioned pipeline with nozzles, connected to the liquid pipe and through the shut-off valve to the outlet of the circulation pump. 2. Installation according to claim 1, with regard to the fact that the capacitor at the input is equipped with an inclined collector connected via a check valve to the drainage receiver. >