SU1211578A1 - Steam condenser - Google Patents

Description

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The invention relates to heat engineering and can be used to condense exhaust steam from thermal power plants that have sources of compressed gas.

The aim of the invention is to reduce metal intensity and intensify heat exchange by increasing the degree of dilution.

The drawing shows a capacitor, a longitudinal section.

The steam condenser comprises a housing .1 made of sheet steel, and successively installed one after another along the steam section 2 steam injection section, condensation section 3, vacuum section 4, steam and condensate mixing section 5, and condensate collection section 6. The steam receiving section 2 is connected to a steam turbine (not shown). Section 3 of condensation contains horizontal tube sheets 7, in which vertical pipe elements are tightly fixed, made in the form of confusors 8, facing smaller diameters to section 4 of the rarefaction. Section 3 is divided by the middle tube plate 9 into two compartments, the top of which is 2/3 of the total volume of section 3. Confusors 8 are installed in the middle tube plate 9 with a gap. In the pipeline for supplying a cooling agent, a vortex cooler 10 is installed, communicated via a hot stream of greater flow with the upper compartment of section 3, and along the cold one with the lower compartment. Section 3 is installed in the housing 1 with a gap forming the shirt 1 1.

Section 4 of the vacuum is bounded below by a conical surface 12, and an overflow pipe 13 is mounted on its axis, which connects section 4 with section 6 of the condensate collection. Pipe 13 has a muffled walnut with perforation in the upper part. The side surface of the pipe 13 in its lower part is also made perforated, which is necessary to drain the condensate from section 4, the latter is connected by the downstream section 5, mixing a couple through an ejector 14 made a whirl.

The mixing section 5 comprises a collector 15 attached to the inner surface of the housing 1 and the pipe 13. A perforation is made in the collector 15115782

chi providing condensate dispersion to form a curtain. Section 5 is bounded below by a conical perforated partition 6,

5 attached to the housing 1 and the pipe 13.

Condensate collection section 6 is connected by pipe 17 through 18 to jacket 11, which, in turn, is connected to collector 15 of section 5. Diverting uncondensed gases serves as ejector 19 connected to mixing section 5. The condenser works as follows

5 way.

A coolant, for example compressed air at a pressure of 0.7 Mllia and above, is brought to the entrance of the vortex cooler 10, and

20 flows of a cooled agent with a flow ratio of 2/3 and 1/3 at cryogenic temperature levels for a cold stream with a lower flow rate are respectively supplied to the upper

25 and the lower compartments of section 3 of condensation for cooling convergers 8.

The presence of gaps in the middle tube plate 9 and a high thermal conductivity of the material of convergers 8 ensure 30

change variable

to the base the temperature of the confuser walls 8. The cooling agent from section 3 is withdrawn for utilization. Simultaneously with the start of the vortex cooling, l 10 ejectors 14 and 19 come into operation, to the inlets of which steam is supplied under a pressure of 0.25-0.5 MPa, thus providing a higher vacuum in the depression section 4 as compared to

 In order to have steam in section 2. For 5-7 minutes required for providing vacuum in section 4 and cooling of convergers 8, steam is supplied to the condenser. Steam due to

4C, below the pressure in section 4, is accelerated in the converters 8 and, in contact with their cold surface, condenses. When this condensate flows through the confusion 8 rapidly

5 due to the pressure on him of new, portions of steam. Next, the condensate enters section 4 and through perforation in pipe 13, section 6 of condensate collection is discharged.

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Due to the presence of the vacuum section 4 in the steam receiving section 2, a constant degree of vacuum is maintained, independent of changes in the ambient temperature.

With changes in steam consumption and a decrease in gas pressure at the inlet to the vortex cooler 10, uncondensed gases are withdrawn by ejector 14 to section 5 of the mixing. The pump 18 is turned on and the condensate from the condensate collection section 6 is fed through line 17 to the jacket 11 of section 3, where it is cooled by heat exchange with the gas that enters section 3 of the vortex cooler 10.

11578. four

Next, the condensate is led to the collector 15, dispersed and mixed with steam. Condensate, passage perforation in the partition 16, enters

5 to section 6, and the vapor from the upper part of section 5 is retracted by an ejector 19,

In the proposed condenser, there is ensured a high condensation efficiency, independent of the change in

10 ambient temperatures. Due to the intensification of heat exchange, the dimensions of the condenser can be reduced.

Compiled by I.Lapin Editor I.Rybchenko Tehred M.Parotsay Proofreader V.Sinitska

Order 632/45 Circulation 590 Subscription VNIIPI USSR State Committee

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

Branch of ShTP Patent, Uzhgorod, Proektna St., 4

Claims (2)

1. VAPOR CONDENSER, comprising sequentially along the steam, a condensation section installed in the housing with pipe elements and a coolant supply pipe, a steam-condensate mixing section connected to a non-condensable gas ejector, and a condensate collection section, characterized in that, for the purpose of lowering metal intensity and heat transfer enhancement by increasing the degree of rarefaction, the condenser is equipped with a vortex cooler located in the coolant supply pipe and communicated in pairs from the pipe elements of the condensation section by a rarefaction section with an ejector and an overflow pipe connecting it to the mixing section and the condensate collection section, respectively, the condensation section being divided into two compartments, the first of which is connected with the hot stream of the vortex cooler along the steam, and the second with the cold and is provided with a jacket included in condensate between the condensate collection section and the mixing section. 2. The condenser according to claim 1, characterized in that the pipe elements are made in the form of confusers, facing smaller diameters to the vacuum section. ω cz b MA sl m □ o> 121 1578