Refrigerating plant

FIELD: refrigerating engineering.

SUBSTANCE: refrigerating plant comprises vessels and metallic pads that underlie the vessels and are connected to the pipeline through branch pipes. The pipeline is mounted with an inclination and is connected with the pressure-tight tank for collecting spilled ammonia. The tank is connected with the atmosphere through the pipeline and stop valve and is provided with air separator for removing air from its steam zone, branch pipes, and pipeline.

EFFECT: enhanced efficiency.

3 cl, 1 dwg

 

The invention relates to refrigeration and can be used in the chemical, oil and gas industry.

Known ammonia refrigeration plant that uses open concrete window wells, and collection of spilled ammonia of them is in a container with pressure below atmospheric (RF Patent No. 2219445, Gushchin A.V. Makarevich O.A., V.A. Gorbunov "Ammonia refrigeration installation).

The disadvantages of this setup is the need to maintain pressure in the vessel below atmospheric, which is not always possible, and the absence of clear liquid ammonia from mechanical impurities, oil, and air.

The technical result of the invention is to provide a safe and efficient protection of refrigeration units from an accidental release of liquid ammonia at a pressure loss of vessels and apparatus, and storing the collected refrigerant with high quality cleaning for re-use.

The technical result is achieved by the fact that under the vessels installed metal pallets, United fittings with tubing made with a slope of not less than 2% and the United sealed reservoir for collecting the spilled ammonia.

The technical result is achieved because in ammonia refrigeration installation sealed reservoir for collecting the spilled ammonia soy is inana through the shutoff valve on the pipe with the atmosphere.

The technical result is achieved because in ammonia refrigeration installation-tight tank equipped with air-purge drum to remove air from the vapor zone, tube and pipe.

The Association of metal trays placed under the vessel refrigeration pressure vessel, nozzles and piping through the valves, greatly simplifies the process of collecting spilled liquid ammonia.

For the free discharge of the liquid refrigerant from metal pallets in an airtight container tubing placed with a slope of not less than 2% of the level of placement of the pallets to containers, and to eliminate backwater in sealed containers last pipe connected to the atmosphere.

To remove air from the sealed containers, pipes, and pipelines that fall from the atmosphere, the scheme provides air-purge drum.

Comparative analysis of the proposed technical solution with the prototype shows that the proposed cooling equipment with the localization system spilled liquid ammonia is layout of pipes, trays and piping made with a bias towards sealed containers that provide free discharge of liquid ammonia in it from pallets and design pallets, airtight container, which is connected to drobopro the house with the atmosphere and equipped with air-purge drum.

The features distinguishing the claimed technical solution to the prototype, have been identified in other technical solutions in the study of the art.

The drawing shows a diagram of the ammonia refrigeration system localization shed ammonia.

Refrigeration with localization spilled liquid ammonia consists of vessels 1, 2, 3, 4, which is placed under metal pallets with 6 nozzles 7, the closed side of the pallet 6 fine filter mesh 18 and shut-off valves 8,10, and pipe 9, is placed under a bias towards an air-tight container 5, the air-purge drum 11, pipe 12 for connecting the steam cavity sealed containers 5 with the atmosphere, isolation 17, pipeline release of oil and impurities 16, the pipe feeding the purified liquid ammonia 13 in the cooling system pipe suction vapor ammonia 14, pipeline supply of hot vapors 15, detectors 19 and level sensors 20, placed on pallets 6 near the hole of the socket 7.

Refrigeration with localization spilled liquid ammonia works as follows.

When depressurization of one of the vessels 1, 2, 3, 4 refrigerating unit automatically stops, liquid ammonia is poured into a metal tray 6, the detector 19 and the sensor is level 20 automatically opens the shutoff valve 8 on the drain pipe 7 and liquid ammonia, passing through the filter fine mesh 18, the pipe 7 enters the pipe 9, is made with a bias towards 5 and it flows in an air-tight container 5, which is always empty, connected to the atmosphere by the pipe 12 and ready to receive the spilled liquid ammonia.

The bottom metal pallets 6 are made with a bias towards placing the drain pipe 7 to ensure complete draining of liquid ammonia from the tray 6, and the pipe 9 is made with a slope of not less than 2% in the direction of sealed containers 5.

At the completion of the collection of liquid ammonia (metal pallet 6 blank) at the team level sensor 20 shut-off valve 8 on the drain pipe 7 is closed automatically, and refrigeration installation with lowering the concentration of ammonia in the shop allowed to automatically run.

Liquid ammonia is collected in sealed containers 5, contaminated with oil and mechanical inclusions and steam spaces sealed containers 5, the nozzles 7 to shut-off valves 8, the drain pipe 9 is atmospheric air.

Therefore, for the purification of liquid ammonia and air removal is necessary to close the shutoff valve on the pipe 12, thereby sealing the container 5 with the pipe 9 and the pipe 7. Then to remove air enters the air-purge drum 11. When you remove all the air vostokovedenie the 11 turned off from work.

After sludge collected spilled liquid ammonia from mechanical impurities and oil due to the difference in specific weights of the last collected at the bottom of the tank 5, whence it is removed through the pipe 16 into the sump under the traditional scheme.

Cleaned from mechanical impurities and oils liquid ammonia according to the traditional scheme is squeezed out by the pressure of hot vapors by opening the shut-off valves 10 on the line 15, 13 in the cooling system for reuse.

After removal of the liquid ammonia from a sealed container 5 shut-off valves 10 on the pipes 13, 15 are closed and sealed container 5 is put on the exhaust fumes of ammonia by opening the shut-off valve 10 to the vapor suction piping 14.

When complete removal of ammonia vapors from an air-tight container 5, the nozzles 7 and the tube 9 shut-off valve 10 to the vapor suction piping 14 is closed and the shutoff valve 10 on the pipe 12, connected with the atmosphere open and the system is continuously ready to receive spilled liquid ammonia.

Tight tank 5 for collecting spilled liquid ammonia should be covered with insulation 17, sleep under a canopy to protect from direct sunlight and precipitation.

This solution allows to considerably simplify the scheme of collecting spilled ammonia, to create effective is cost-effective system for the protection of the refrigeration unit, to improve its security.

The economic effect from the use of the proposed technical solution is formed by reducing cost, saving shed ammonia for re-use and enhance the security provided by the automation process.

1. Ammonia refrigeration plant, including vessels, characterized in that the vessels under a metal pallets, United fittings with tubing made with a slope of not less than 2% and the United sealed reservoir for collecting the spilled ammonia.

2. Ammonia refrigeration installation according to claim 1, characterized in that the sealed reservoir for collecting the spilled ammonia is connected through a shutoff valve on the pipe with the atmosphere.

3. Ammonia refrigeration installation according to claim 1, characterized in that tight tank equipped with air-purge drum to remove air from the vapor zone, tube and pipe.



 

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