SU1520600A1 - Nuclear reactor cooling system - Google Patents

Abstract

The invention relates to nuclear technology, and more specifically to nuclear power installations. The aim of the invention is to improve the reliability of the cooling system of the nuclear reactor while reducing the level of the coolant below the lower branch pipes of the nuclear reactor. The heat carrier passing through the core 6 of the nuclear reactor 5 enters the inlet of the ejector 13 via the ejected medium under the action of the ejecting stream coming from the outlet of the circulation pump, the inlet of which is connected to the cold collector 7 of the steam generator 1. From the outlet of the ejector 13, the coolant enters the mountain collector 2 steam generators 1. The ejector inlet 13 through the ejected medium is equipped with a check valve, a centrosymmetric rosette collector and is located above the core of the nuclear reactor. 2 hp f-ly, 1 ill.

Description

one

(89) CS 250112 OS PV 7858-84 / 16,10.84

(48) 12/30/86

(21) 7774194 / 24-25

(22) 05.22.86

(46) 11/07/89. Bul № 41

(71) Energoprojekt p.and.o. (CS)

(72) Dalibor Sykora and Ilona Sykorova (CS)

(53) 621.039.5 (088.8)

(54) NUCLEAR REACTOR COOLING SYSTEM

(57) The invention relates to nuclear technology, and more specifically to nuclear power installations. The aim of the invention is to increase the reliability of the nuclear cooling system.

actor at a decrease in the level of the coolant below the lower nozzles of the nuclear reactor. The heat carrier passing through the core 6 of the nuclear reactor 5 enters the inlet of the ejector 13 via the ejected medium under the action of the ejecting stream coming from the outlet of the circulation pump, the inlet of which is connected to the cold collector 7 of the steam generator 1. From the outlet of the ejector 13, the coolant enters the mountain collector 2 steam generators 1. The ejector inlet 13 through the ejected medium is equipped with a check valve, a centrosymmetric rosette collector and is located above the core of the nuclear reactor. 2 z.p, f-ly, 1 ill.

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The invention relates to nuclear technology, and more specifically to nuclear power installations (NPI).

A known cooling system for a nuclear reactor containing a steam generator connected through a main circulation pump to a nuclear reactor (Ganchev B, G. and others. Nuclear power plants, M .: Energoatomizdat, 1983, p. 20. Fig. 1.4) . A disadvantage of the known system is uneven core cooling.

The closest to the invention: in its technical essence and the achieved result is a known nuclear reactor cooling system containing a steam generator connected through a main circulation pump to a derny reactor including a core (Ganchev et al. Nuclear power plants. -M .: Energoatom-izdat, J983, pp. 4J6, Fig. 10.3).

The disadvantage of this known system is the low reliability of cooling the nuclear reactor while reducing the level of the coolant below the lower nozzles of the nuclear reactor.

The purpose of the invention is to increase the reliability of the cooling system of the nuclear reactor while reducing the level of the coolant below the lower branch pipes of the nuclear reactor.

The drawing shows the scheme of the cooling system of a nuclear reactor.

The cooling system of the nuclear reactor contains a steam generator 9, which by a hot collector 8 through a hot pipe 14 with fittings 15 is connected to the outlet of a nuclear reactor 2 with an active zone 1, and a cold collector 10 through a cold pipe 12 with fittings 16 to the inlet (bottom) branch pipes of the nuclear reactor 2, the circulation pump 4, whose inlet through suction pipe 3 is connected to the cold collector 10 of the steam generator 9, and the outlet through the discharge pipe 5 to the inlet of the ejector 18 through the ejecting flow. Ejector 18. The inlet through the ejected medium is located (as low as possible) above the active zone 1 of the nuclear reactor 2. The outlet of the ejector 18 through the discharge pipe 5 is connected to a hot collector 8 of the steam generator 9. The cold collector 10 of the steam generator 9 is supplied

1520600 &

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for filling the primary side of the napoi e- reactor 9 while cooling the nuclear reactor with a low level of heat carrier. The ejector 18 may be placed above the active zone by means of a carrying cable and a central suspension.

The inlet of the ejector 18 through the ejected medium is provided with a non-return valve (for a reliable start) and connected to a centrosymmetric rosette collector 19, which is provided with locking supports 20.

The system works as follows.

The heat carrier passing through the core 1 of the nuclear reactor 2 enters the inlet of the ejector 1B via the ejected medium under the action of the ejecting stream flowing through the pressure pipe 5 from the outlet of the circulation pump 4. After mixing in the ejector 18, the coolant from its output enters the hot collector 8 steam generator 9 for cooling. The cold coolant from the cold collector 10 of the steam generator 9 enters the inlet of the circulation pump 4 through the suction pipe 3 and through the cold pipe 12 and the valve 16 to the inlet of the nuclear reactor 2 (the valve 15 on the hot pipe 14 is closed), where it takes heat from active zone 1. The use of a centrosymmetric rosette collector 19 in the space of the heated coolant over the active zone allows to increase the uniformity of the flow of the coolant through the cooling core.

Claims (1)

1. A nuclear reactor cooling system comprising a steam generator connected via a main circulation pump to a nuclear reactor, characterized in that an ejector and a circulation pump are introduced, the inlet of which is connected to the cold collector of the steam generator and the output to the ejector inlet through an ejecting flow, moreover, the output of ejecto5 15206006 pa is connected to a hot ejector on an ejected medium of the steam generator, while the inlet is a check valve, torus on the ejected medium is located-3. The system of PP, 1 and 2, OTL above the active nuclear zone, indicating that the inlet of the ejector. 2.1 The system of claim 1, about tl and centrosymmetric rosettes, is sochapan with that on. by the inputor.