Testing device for functional verification of steam generator accident emission system

Abstract

The invention discloses a testing device for functional verification of a steam generator accident emission system. The testing device comprises a main water supply pipeline, a main water supply isolation valve, a steam generator, a main steam isolation valve, a main steam pipeline, a first discharge valve, a second discharge valve, a discharge tank, a primary loop helium pressure measuring device, a secondary loop water supply pressure measuring device, a primary loop humidity detecting device, a man-machine interface display. a Labview data acquisition cabinet and a steam generator accidentemission DCS cabinet. The system can realize advanced verification of actual functions of the steam generator accident emission system.

Description

technical field [0001] The invention belongs to the field of nuclear energy science and engineering, and relates to a test device used for functional verification of an accidental discharge system of a steam generator. Background technique [0002] The accident discharge system of the steam generator is a special safety facility for the high temperature gas-cooled reactor. Since the pressure on the water and steam sides (secondary side) of the steam generator is higher than the helium pressure in the primary circuit, when the heat exchange tube of the steam generator breaks, The water and steam in the tube leak to the primary circuit, and the water vapor flows into the reactor with the helium flow, which will cause the increase of reactivity, the increase of the pressure of the primary circuit and the damage to the core of the reactor. In order to ensure the safety of the reactor, it is necessary to reduce the amount of water and steam entering the primary circuit system of ...

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Problems solved by technology

However, there are at least the following problems at present: since the accident discharge system of the steam generator is put into operation under the accident condition that the heat transfer tube of the steam generator breaks, it cannot be recovered through the extreme operating conditions of the emergency shutdown caused by the break of the heat transfer tube during operation. Actual verification of its functional reliability; at the same time, during the commissioning of the unit without fuel loading, the emergency shutdown protection system of the reactor cannot be put into operation, and the DCS platform does not have the test conditions to verify the design function of the steam generator accident discharge system, so it is difficult to expose and correct in advance Problems with Control Strategies

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