SU1333644A1 - Vacuum thermal deaerator - Google Patents

Abstract

The invention relates to a power system and industrial heat engineering, m. used in thermal power plants and in industrial heating boilers and allows to increase the reliability of work and increase the heat load of the deaerator. Between the jet 3 and the bubble 4 plates (T) there is a partially perforated overflow T. On the bubble T 4 there are partition walls 10, 11. The space 12 under T 9 is communicated with the evaporative compartment by means of boxes (K) 13, 14. Each of K is formed by one partition and the nearest walls of the deaerator housing. The steam generated during the boiling up of the overheated water in the evaporation compartment, with small thermal loads, feeds in K 13, 14 enters under T 9. Next, the passage through the perforation of the latter, with barbotage, is applied to the water on it. With an increase in heat load, the steam cushion under T 9 increases and the steam enters under T 4, thereby including it in operation. 2 Il. (L with so oo about 4 Fig. 2

Description

The invention relates to a power system and industrial heat engineering, namely to thermal deaerators, and can be used in thermal power plants and in industrial heating boilers.

The aim of the invention is to increase the reliability of operation and increase the heat load of the deaerator.

FIG. 1 shows a deaerator, a general view} in FIG. 2, a section A-A in FIG. 1,

The deaerator contains installed in the cylindrical case 1 jet 2, 3 and bubbling 4 plates, nozzles 5, 6 inlet and outlet of the deaerated

water and communication with the evaporative compartment 7 Pat, thinning 8 supply of superheated water. The deaerator is additionally equipped with an overflow plate 9 installed between the jetting 3 and the bubble 4 plates, which is partially perforated. On the bubble plate 4, the partitions 10, 11 are installed. The space 12 under the overflow plate 9 is communicated with the evaporative compartment 7 by means of the ducts 13, 14, each of which is formed by one partition 10, 11 and the nearest walls of the deaerator body 1.

The deaerator works as follows.

The source water through the pipe 5 enters the jet plate 2. This jet plate is designed to pass 30% of water at a nominal load and acts as an integrated evaporator cooler. The remaining water is drained to the second jet tray 3, which provides full water flow at all loads. From this plate, the water enters the perforated overflow plate 9 and further onto the bar10

15

out loadings along the ducts 13, 14 into the space 12 under the overflow plate 9 and, passing through its perforation by bubbling, processes the water on it. As the heat load increases, the steam cushion under the overflow plate 9 increases and the steam enters under the bubble plate 4, thereby activating it. Heated to a temperature close to the saturation temperature, and partially degassed on the elevation plate 9, the water flows to the bubble plate 4, where it is intensely deaerated.

The presence of steam volume between the overflow and bubbler plates

20 eliminates the occurrence of water hammer when even significantly submerged water is supplied to the perforated part of the overflow plate, which increases the reliability of the deaerator, and increasing the total area of bubbling increases its thermal load.

Claims (1)

Invention Formula thirty A vacuum thermal deaerator containing jet and bubbling plates installed in a cylindrical housing, supply pipes and drainage of deaerated water, and connecting to the evaporating compartment a supply of heated water, characterized in that, in order to increase reliability and 40 to increase the heat load, the deaerator is additionally equipped with a partially perforated overflow plate installed between the jetting and bubbling plates and two bogging plates 4 installed. The deaerated water 45. is partitioned by the bubbling plates through the branch pipe 6, which also heats the overflow space in the form of overheated water through the plate is communicated with the evaporating pipe 8 is fed into the evaporative compartment through the boxes, each compartment 7, where it boils, and the evolved one of which is formed towns and with steam supplied at low heat 50 surrounding the enclosure walls. the loads in the ducts 13, 14 into the space 12 under the overflow plate 9 and, passing through its perforation, sprays the water on it. As the heat load increases, the steam cushion under the overflow plate 9 increases and the steam enters under the bubble plate 4, thereby activating it. Heated to a temperature close to the saturation temperature, and partially degassed on the elevation plate 9, the water flows to the bubble plate 4, where it is intensively deaerated. The presence of steam volume between the overflow and bubbler plates eliminates the occurrence of water hammer when even significantly submerged water is supplied to the perforated part of the overflow plate, which increases the reliability of the deaerator, and an increase in the total bubbling area increases its thermal load. Invention Formula A vacuum thermal deaerator containing jet and bubbling plates installed in a cylindrical housing, inlet and outlet nozzles of deaerated water and an inlet of superheated water inlet to the evaporative compartment, characterized in that, in order to improve reliability of operation and to increase the heat load, the deaerator is additionally equipped with a partially perforated front plate installed between the jet and bubbling plates. Jeo30fJ-, Rodan7 ° ma Water Editor N. Shvydka Compiled by L. Simoi Tehred L. Oliynyk Proof-reader S. Cherni Order 3920/20 Circulation 850 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 FIG. / Subscription