RU2385757C1 - Separator - Google Patents

Abstract

FIELD: technological processes. ^ SUBSTANCE: invention is intended for use in technological process of gas-liquid flow separation into components as an internal separation device in process of steam generation and in devices of chemical industries. Separator comprises body with nozzles for inlet of gas-liquid mixture and discharge of separated components, concentrically installed louver sections with assembled collector, which are arranged in body between horizontal plates, perforated shells, cylindrical partitions installed between louver sections with planks of sinusoidal shape installed between them and fixed on them with their ends, and equipped with pockets arranged on side surfaces of corrugations via period of sinusoid and installed with inclination to axis of separator, at the same time the first cylindrical partition along with the flow is fixed on lower horizontal plate, and the second one - on the upper one. ^ EFFECT: higher efficiency of separation due to increased critical value of flow speed and organised drain of separated moisture, and also prevention of liquid film breakage and its repeated ingress into flow. ^ 4 dwg

Description

The invention relates to heat transfer technology and is intended for use as a separation device when achieving the necessary process for separating a gas-liquid stream into components.

A linear vertical steam separator is known, including a cylindrical body, a series of centrally located nozzles pushed one into the other and forming annular slots in the upper parts for the removal of steam, and a perforated shell mounted at the steam outlet from the separator, and it is equipped with vertical covering nozzles along the height of the separator , blinds, the passage channels of which are located radially, and their cross sections increase in the direction of steam movement. [one].

The disadvantage of this technical solution is that with rolls and trim, the water level in the separator rises against the wall of the housing on the side of the roll or trim and becomes unacceptably high, as a result, steam bubbling occurs through the through section of the perforated shell. Humidity increases stepwise, which has an extremely negative effect on the operation of a superheater of a nuclear power plant (NPP). In addition, there is no organized drain of the separated liquid along the trajectory of the gas-liquid flow.

A linear vertical steam separator is known, including a cylindrical body, a series of centrally located nozzles pushed one into the other and forming annular slots in the upper parts for the removal of steam, and a perforated shell mounted at the steam outlet from the separator, the vertical blinds being arranged concentrically located in the steam volume sections, providing parallel movement of steam through all sections and removal of the separated moisture [2].

The disadvantage of this technical solution is the insufficient separation of the gas-liquid stream from the fine droplets due to the fact that there is no organized drain of the separated liquid from the gas-liquid flow path. This significantly affects the operation of the nuclear superheater.

The technical result of the invention is to ensure the reliability of the flow of separated liquid and to prevent secondary entrainment of finely dispersed droplets by a moving steam stream when the critical speed is exceeded, which is due to the operation of the nuclear power plant in the mode of variable loads.

The specified technical result is achieved by the fact that the separator is equipped with cylindrical partitions installed between the louvre sections with sinusoidal strips located between them and fixed on their ends, provided with pockets placed on the side surfaces of the corrugations through a sinusoidal period and installed with an inclination to the separator axis, while the first cylindrical partition along the flow is mounted on the lower horizontal plate, and the second on the upper.

An information search for scientific and technical achievements on this topic, a thematic analysis of the inventions of the VTTB patent fund to solve this problem did not reveal a combination of distinctive features similar and inherent to the features of the invention, which can be used as a separation device to achieve the necessary technological process for separating gas-liquid flow on components. In accordance with the current legislation of Russia, the proposed invention meets the criteria of "novelty", "prior art", "industrial applicability".

The essence of the invention is illustrated by drawings,

where in Fig.1 is a longitudinal section of a separator;

figure 2 is a cross section of a separator;

figure 3 shows the movement of the flow in the separation device;

figure 4 - strip sinusoidal shape with pockets.

The separator comprises a housing 0 with a gas-liquid flow inlet pipe 1, a diffuser 2, a perforated sheet 3, a package of 4 horizontal funnel louvers, perforated shells 5, partitions 6 fixed to each other by means of sinusoidal bars 7 with pockets 8 located across the sinusoid period direct sections with an inclination towards the axis of the separator, a package of 9 vertical blinds, a pipe 10 for the exit of dried steam, a prefabricated manifold 11 under a package 9 of vertical blinds, a volume of 12 water, a pipe 13 of the water outlet. The louvre sections are concentrically arranged between horizontal plates.

The separator works as follows.

The gas-liquid flow enters the separator through the inlet pipe 1, enters the diffuser 2, where there is a slight change in the flow rate. After the passage of the perforated sheet 3 is distributed through the horizontal curved channels of the package 4 blinds, funnels, where it is exposed to centrifugal forces. At the same time, finely dispersed liquid as a heavier component due to surface tension forces falls on the walls of the packet 4 of the funnel shutters. The gas-liquid flow, bypassing the perforated shell 5, enters between the partitions 6, which form a passage channel, divided evenly along the perimeter by sinusoidal strips 7 with pockets 8, where further fine particles are separated from the stream, and the separated liquid collected in pockets 8 due to the film effect flows down the outer surface of the inner partition 6 with the entry into the collection manifold 11, from where it enters the volume 12 of water, and the dried gas-liquid stream follows further to the packet 9 vertical blinds, where there is a finer sedimentary separation, bypassing the second perforated shell 5 enters the pipe 10 of the dried gas. The liquid separated by means of separation devices and fed into the collection manifold 11 enters the volume of water, from where it is consumed through the fluid outlet pipe 13 for the thermal cycle of the nuclear power plant.

The use of the design of the separator of the proposed type allows efficient drainage of the separated liquid, and by increasing the critical velocity of the gas-liquid stream, the separation process is improved due to the prevention of the breakdown of the liquid film and the elimination of re-wetting of the stream with the separated liquid, which negatively affects the operation of the superheater of the nuclear power unit.

Information sources

1. Blinov K.A. et al. Linear vertical steam separator. A.S. SU N 101061, B01D 45/06. Priority 09.20.54. Publ. in BI N 12, 1955 - an analogue.

2. Sterman L.S. Vertical louver steam separator. A.S. SU N 134700, B01D 45/10. Priority 13.06.60. Publ. in BI N 1. 1961 - prototype.

Claims (1)

A separator comprising a housing with nozzles for introducing a gas-liquid mixture and output of separated components, concentrically arranged louvre sections with a prefabricated collector, perforated shells located in the case between horizontal plates, characterized in that it is provided with cylindrical partitions installed between the louvre sections and located between them and fixed to them with their ends strips of a sinusoidal shape, equipped with pockets placed on the side surfaces of the corrugations through the period d sinusoids and installed with an inclination to the axis of the separator, with the first along the flow cylindrical partition mounted on the lower horizontal plate, and the second on the top.

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