SU1691486A2 - Service water supply system - Google Patents

Abstract

The invention relates to the technical water supply systems of nuclear and thermal power plants, which are supplied with water from large reservoirs (sea, reservoir, lake, cooling pond). The goal is to increase reliability under seismic conditions up to 8-9 points. In the case of seismic oscillations exceeding 7 points, the discharge of thermal water from turbine condensers through pipes 7 to exhaust channel 5 stops and pump station 2 begins to take water from the reservoir not only with a supply channel, but also channel 5, now running. As a result, the pump station 2 is connected to both supply channels 1 and 5. Cold water, thus withdrawn, is directed to the responsible consumers, and the waste heated water from the reactor goes through water lines 8 directly into the reservoir between channels 1 and 5 2 il. i S cl

Description

The invention relates to the technical water supply systems of nuclear and thermal power plants, which are supplied with water from large reservoirs (sea, reservoir, lake, cooling pond) and are complementary to the main bus power plant. No. 1071692.

The purpose of the invention is to increase the reliability under seismic conditions up to 8-9 points.

Fig. 1 shows a technical water supply system for a nuclear power plant and a diagram of the movement of water under normal operating conditions with seismic effects up to 5-6 points; Fig. 2 shows a system and a scheme for the movement of water when a nuclear power plant is operating under seismic conditions up to 8 9 points.

The technical water supply system contains supply channel 1, pumping station 2, zebral wall 3 with inlet openings in the lower part, slotted jumper 4, outlet channel 5, which also supplies the earthquake at maximum sizes, discharge 6 - the water outlet pipes 7 of the warm ooda and the conduits 8 of the discharge of heated water from the reactor of the power plants, the outlets of which are located between channels 1 and 5, are installed.

The system with seismic effects up to 5-6 points works as follows.

Water from the reservoir through supply channel 1 flows to pumping stations 2, with a portion of the incoming flow passing through the inlet chamber through the inlets to

the return wall 3, and the other part of the total transit flow rushes through the slot-jumper 4 along the flow guide of the collecting wall 3 into the discharge channel 5. This transit flow is created by the action of a directional ejecting discharge of 6 tzploy water from consumers through the outflow pipes 7 to the initial a section of the outlet canape 5. The heat of the water from the condensers of the turbines is discharged through the pipe 7, which is well below the bottom of the channel 5, at speeds that provide a zhection effect, the selection of ejection speeds, and the size of the working In addition to the avant-chamber and channel 1, it is possible to achieve such a ratio of the speeds of the working l transit (suction) water flow that debris, sludge, algae and fish will be carried along with the transit flow into the diversion channel 5 with release to the water body.

Thus, lateral water withdrawal for the needs of an industrial enterprise from a transit flow excludes the possibility of full water intake structures, usually located at the end of the inlet channel, and therefore not able to pass garbage and so forth past water intake facilities, with the need for complete removing it from the surface of the pumping station’s debris devices. In addition, the spring direction wall is a hydraulically-e-CKIAM fish protection device, the efficiency of which reaches 60%.

In case of seismic oscillations exceeding 7 points, the discharge of warm water from the turbine condensers through pipes 7 into the discharge channel 5 stops

and pump station 2 begins to take water from the reservoir not only with supply channel 1, but also with channel 5 (now with supply). As a result of this pump

Station 2 is connected to both supply channels 1 and 5. The cold water withdrawn in this way is directed to the responsible consumers, and the waste water from the reactor flows through

The conduits 8 are discharged directly into the reservoir between channels 1 and 5.

The advantage of a technical water supply system for a nuclear power plant is a comprehensive solution to the following

problems: preventing contamination of water intake structures with debris, sludge and algae, diverting fish from pumping stations back into the reservoir, cooling warm waste water before discharging into

reservoir under normal conditions of operation of a nuclear power plant under seismic conditions of up to 5-6 points and improving the reliability of water supply to responsible consumers of reactor compartments under seismic conditions of up to 8-9 points.

This significantly increases the cost-effectiveness and reliability of the technical water supply system of a nuclear power plant.

Claims (1)

Invention Formula The system of technical water supply on the auth. No. 1071692, distinguished from By the fact that, in order to increase the reliability under seismic conditions up to 8-9 points, it is equipped with conduits for discharging heated water from the reactor of the power plant, the outlets of which are located between the channels. ffc ///// yy // yyyZz ///// J J  -J-t LLZ-LLLLL reservoir ®ig1 about t .. | .... | ... .. y ti i ii.i. /.% i. : IG one / ////// ,, /  II // u /// u ///// ill-and ///// Pond FIG. 2