SU1040528A1 - Device for localization of failure in the atomic power station - Google Patents

Abstract

1. DEVICE FOR LOCALIZATION OF AN EMERGENCY AT A NUCLEAR POWER PLANT with a multiloop design of the primary circuit, containing a hermetic shell, inside which a reactor with the equipment of the first circuit, a cooling tank, a starting tank with a condensate drain valve, a valve, and a valve are placed. the chamber displaced with the pool (liquid is cooled, and the diffuser is with the starting capacity, so that, in order to ensure the reliability of the device, it is made under the shell You have a hermetic manifold in communication with the steam nozzle of the injector, and self-contained boxes of dd olga or several circulation loops co-amp and one with the PSU manifold (with check valves. SP

Description

2, Usgroysgao according to the paragraph. If it is of a tschndbnsaga, u in it, that njCiKoBaa the capacity of the condensate

provided with a duplicate pipe fittings1shmt1 drain: boxes.

1040528,

moreover, nozzles spnva displayed in various

1 s; The invention relates to nuclear power, in particular, to reactors with a loop design of the first circulation loop. A device for monitoring avarica atomic is known; a power plant containing a hermetic enclosure in which a reactor is placed on the equipment of the first circulation loop, a cooling liquid pool, an injector, and a tank for collecting condensate of SD. A disadvantage of the device is the presence of a special container for dumping the condensate, which is associated with an increase in the dimensions of the device for localizing the accident. This disadvantage is largely eliminated in the known device for localizing the accident at the atomic electro-: stakgo I; containing a hermetic shell inside which a reactor is placed with the equipment of the first circuit, the pool is cooled; Yes1S8lei ldkosti, start-up tank with a condensate drain pipe, is equipped with a check valve and an injector, the displacement of which is communicated with the pool of cooling fluid, and the diffuser with putzhova capacity 23. However, in this system, the entire volume of the hermetic enclosure is used as a condensate collection tank, which expands the area of the accident and leads to significant costs in eliminating the consequences of the accident. The purpose of the invention is to increase the reliability of the device. This goal is achieved by the fact that under the casing a collector is made tightly connected to the steam injector nozzle and autonomous boxes for one or several circulation loops communicated to the collector by means of check valves. In addition, the starting capacity of sleep on the duplicate pipes of condensate drainage, with the discharge pipe is removed to various boxes. FIG. 1 shows a device for accidental accident; in fig. 2 side arrangement of circulation loops. The system contains a hermetic shell 1, inside of which is placed a reactor with the equipment of the primary circuit, a pool 2 of cooling liquid, and a starting one; . bone. 3 with a condensate drain pipe 4, equipped with a check valve, and an injector 5, the displacement chamber of which is connected to the coolant basin, and the diffuser 7 with the starting capacity. A sealed collector 8 connected to the steam nozzle 9 in: n ectopa and autonomous boxes 10 for circulating bodies communicating with the collector through check valves 11 are provided under the casing. The tank is equipped with redundant condensate drain pipes in different boxes. At the moment of the compaction of the circulation loop under the hermetic casing 1 in one of the autonomous boxes 10. a sharp increase in pressure occurs, resulting in emergency steam through. the check valve 11 enters the hermetic manifold 8, from where it enters the steam nozzle 9 of the injector 5, where, with some thermal overflow, it is accelerated to supersonic speed. Rdnov1r9menno in the chamber displacement 6, due to the -formed pressure differential, cooling fluid flows from the pool 1-1a 2. At the entrance to the diffuser 7, the vapor condenses. The resulting condensate enters the starting capacity 3 and through the nozzle 4 is discharged into one of the boxes, where there is no accident. In the event of accidents in the box into which the drain pipe is placed, the condensate is drained via a redundant pipe into another box. Thus, the use of the proposed device provides for the localization of an accident in a volume smaller than the volume under a hermetic shell, which greatly reduces the cost and duration of emergency response measures. This is due to the fact that not all of the exchange under the hermetic is used as a tank for condensate discharge. sheath, and one of the autonomous

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FIG. 2

Claims (2)

1. DEVICE FOR LOCALIZATION OF AN ATOMIC EMERGENCY - TROSTANIII mnogopeglevoy structure with the first loop containing 'hermetic shell, inside which are arranged' first reactor equipment ¹ ra contours, coolant pool launcher container with the condensate drain pipe provided with a valve ofagnym j, and an injector whose displacement chamber communicates with the swimming pool cooling liquid, and a diffuser with a starting capacity, which is characterized by the fact that, in order to “increase the reliability of the device’s operation,” a sealed collector connected to the steam nozzle (injected a and autonomous cells for one or more circulation loops communicated with the collector through the check valves. ,, 1040528 10405Y8, 2. The device according to π ·. 1, with the fact that the starting tank is equipped with duplicate drain pipes _: [Condensate, condensate boxes. moreover, the discharge pipes are displayed in various 1 ί