DD266140B3 - IMPACT LEVEL - Google Patents

Description

According to the invention the object is achieved in that by both sides and at the under *, ι fnde the baffle mounted parallel to the container axis guide walls, the baffle is designed like a parallelepiped with upper and side Ga-jdustrittsöffnungen, wherein the sum of the cross-sectional areas of the lateral gas outlet openings for Cross section of the upper gas outlet opening such as 1: 2 to): 1.5 behave. The inventive arrangement of the gas outlet openings not only above, but also on the side and the differentiated ratio of their cross-sectional areas to each other is achieved that speed peaks are avoided both within the deposition chamber, as well as in the subsequent space of Ölabscheidbbehälters.

In order to largely suppress the entrainment of the liquid droplets that jump back from the baffle wall, according to a further feature of the invention, two gas outlet openings each are arranged laterally above and above the inlet cross-section. This achieves a further reduction of speed peaks. The following separator knit as a fine separator is at all points with approximately greed ir speed flowed. The deposition improves considerably. There remain only small amounts of residual oil in the outflowing refrigerant gas, which has a favorable effect on the heat transfer in the evaporator and condenser and thus the energy consumption. Malfunctions due to oil displacements in refrigeration systems no longer occur.

Example

The accompanying drawing shows:

1 shows a vertical section through an oil separator in the diagram; 2 shows a plan view along the line A-A according to FIG. 1.

It consists of the container shell 1. It has the shape of a horizontal cylindrical Bl shutter with double-ended dished ends. About the inlet nozzle 2, the incoming gas-oil Gomisch enters the cuboid baffle 3 for pre-separation. The fine separation occurs in the deposition knit 4, which is designed as a cylindrical body. From the interior of the Abscheidegest.icks 4, the purified gas leaves the Austriltsstutzen δ the oil separator. Above the liquid level 6 are AbJ ^ kbleche 7, which largely prevent the contact between gas and already deposited oil in a flaky arrangement. When the incident on the inlet nozzle 2 incoming gas stream to the vertical baffle 8, the separation of gas and entrained oil. The majority of the oil flows down the baffle 8. About the parallel to the container axis leading lower guide wall 9 and the passage slot 10, the oil flows into the oil collection chamber 11 from.

The gas flowing back from the baffle 8 passes through a plurality of openings in the gas space of the oil separator. These are the upper gas outlet opening 12 and two lateral gas outlet openings 13. The lateral gas outlet openings 13 are arranged so that they lie above and below the central axis of the inlet nozzle 2. The inventive ratio of the cross sections of the gas outlet openings 12; 13 speed peaks are avoided and distributed from the cuboid baffle 3 gas flowing largely evenly distributed to the inner cross section of the oil separator. Thus, the Abscheidegestrick 4 is flowed on all sides with relatively uniform speed, so that approximately the same residence times are achieved in the passage of the gas. This is also a ADScheidung very fine oil droplets possible, so that the residual oil content is very low

 In the illustration of Fig. 2 is of particular interest, the upper gas outlet opening 12, dia hit. is clearly visible.

Claims (2)

1. baffle for a multi-stage, horizontal, cylindrical oil separator, which is arranged as an inner Abscheidekammer with vertical baffle and lower Flüssigkeitslgkeitsablauf after axial entry and designed by both sides and at the lower end of the baffle parallel to Bohälterachse mounted guide walls similar to a cuboid with upper and side gas outlet openings is, characterized in that the sum of the cross-sectional areas of the lateral Gasaustrittsöffnunnen (13) to the cross section of the upper gas outlet opening (12) as 1: 2 to 1: 1.5 behaves. 2. Impingement according to claim 1, characterized in that laterally each 2 gas outlet openings (13) respectively above and below the inlet nozzle (2) are arranged. For this 1 page drawings
Field of application of the invention The invention relates to a baffle for a multi-stage, lying, cylindrical oil separator, which is arranged as an inner separation chamber with a vertical baffle and lower liquid outlet after the axial inlet, preferably for separating oil from refrigerant jas in screw compressor units. Characteristic of the known state of the art In screw compressors, significant amounts of oil must be injected into the compression chamber for internal sealing, cooling and lubrication. Thereafter, this oil must be separated as much as possible from the compressed refrigerant gas again to supply it to the screw compressor after appropriate treatment. Residual oil quantities remaining in the refrigerant gas should be kept as small as possible, since this oil hinders heat transfer. The result is increased energy consumption and under unfavorable conditions malfunctions due to oil migration. In screw compressor packages, oil separators in the form of a horizontal, cylindrical container with corresponding internals have been used for some time now. They are space-saving and therefore favorable for a Aggregatbauwoiee. In such a known lying, cylindrical oil separator a vertical baffle plate is arranged after the axial entry. It forms with the container bottom an inner separation chamber with lower outlet opening for the oil. The gas outlet takes place above the baffle plate through an opening in the form of a circular section. Within this deposition chamber, different flow rates result. Thus, in the direction of Auströmöffnung the velocity of the gas is high, while locally lower flow velocities occur in the remaining parts of the deposition chamber. Due to the high flow velocity at the outlet, oil droplets returning from the baffle wall are undesirably entrained. Also on the way through the oil separator, the gas flows at very different speeds and then hits the separator knit of the FeinaDscheider. At the points at high speed it comes to entrainment of liquid droplets through the Abscheidegestrick so that the gas is still loaded with residual oil amounts (DD-PS 152 848). From DD-PS 225 343 a horizontal, cylindrical oil separator with axial inlet is known, which also has an inner separation chamber with lower oil drain as the first separation stage. The gas outlet is from the inner) Abscheidekammer above a pipe bend with alignment on another baffle. Again, based on the cross section of the oil separator, the flow rates at the individual points are so different. The residence time of the still laden with oil droplets gas at high flow rate sites is too small for further deposition by precipitation under the influence of gravity. The subsequent fine separator is in turn flowed at very different speeds. It also comes here in the places with higher speed entrainment of oil droplets and thus to an undesirable residual oil content. Object of the invention The aim of the invention is to improve the degree of separation of horizontal cylindrical oil separators, in particular for refrigeration systems with oil-filled screw compressor units, in order to reduce energy consumption and improve operational safety. Explanation of the essence of the invention The object of the invention is to make the Abströmverhältnisse from the inner deposition chamber of a horizontal cylindrical oil separator with axial inlet so that at all points de · cross section · within the separation chamber and the subsequent cross section of the ölabscheldebehälters a world-same flow rate of the gas stream is achieved.