A High Pressure Safety Injection System for Nuclear Power Plant
A high-voltage safety, injection system technology, used in nuclear power generation, nuclear engineering, climate sustainability, etc., can solve problems such as the reduction of emergency cooling capacity of safety injection systems
Active Publication Date: 2016-12-21
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology
If this line fails, this function cannot be realized, and the emergency cooling capacity of the safety injection system is reduced
Method used
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] The nuclear power plant reactor includes a primary loop system, and the primary loop system includes 3 loops 5, figure 1 The middle table shows one of the loops 5; each loop includes a hot pipe section 502 and a cold pipe section 501; the coolant enters the pressure vessel 2 from the cold pipe section 501 through the pump 4 and absorbs heat from the core 1, and the coolant after absorbing heat Leaving the pressure vessel 2, the hot pipe section 502 passes through the steam generator 3 to release heat, and the coolant after releasing heat returns to the cold pipe section 501 and then enters the pressure vessel 2 again to realize circulation;
[0024] Such as figure 2 As shown, a nuclear power plant high-pressure safety injection system of the present invention includes at least one boric acid injection unit 15 and at least one coolant injection ...
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A high-pressure safe injection system for nuclear power stations is configured on multiple loops (5) of a loop system of a reactor. The high-pressure safe injection system comprises at least one boric acid injection unit (15) and at least one coolant injection unit (16). The boric acid injection unit (15) comprises a concentrated boric acid injection box (8) and a concentrated boric acid injection pipeline (7). One end of the concentrated boric acid injection pipeline (7) is connected to the concentrated boric acid injection box (8), and the other end of the concentrated boric acid injection pipeline (7) penetrates into a containment vessel (11) and then is connected to a cold tube section (501) of a loop (5) of a loop system of the reactor. The coolant injection unit (16) comprises a water source (14) and a coolant injection pipeline (6) connected to the water source (14). The coolant injection pipeline (6) comprises a cold tube section injection pipeline (9) and a heat tube section injection pipeline (10) that are connected in parallel; the cold tube section injection pipeline (9) penetrates into the containment vessel (11) and then is connected to a cold tube section (501) of a loop (5) of a loop system of the reactor; and the heat tube section injection pipeline (10) penetrates into the containment vessel (11) and then is connected to a heat tube section (502) of a loop (5) of a loop system of the reactor. Multiple pipelines of the injection system are not mutually interfered, thereby facilitating flow control; and the injection system has high security.
Description
technical field [0001] The invention relates to the field of pressurized water reactor nuclear power plants, in particular to a high-pressure safety injection system for pressurized water reactor nuclear power plants. Background technique [0002] In pressurized water reactor nuclear power plants, the safety injection system is one of the important special safety facilities to perform the emergency cooling function of the core when the main coolant pipeline or main steam pipeline rupture accident occurs. In previous designs, the high pressure safety injection system utilized two of the three top charge pumps for the chemistry and volume control system as safety injection pumps. The injection flow of each safety injection pump is aggregated through a main pipe and then distributed to the cold and hot sections of each loop. This design will affect the flow of other injection pipelines when a certain injection pipeline fails. A concentrated boric acid injection tank is install...
Claims
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IPC IPC(8): G21C15/18G21C15/14
CPCG21C9/033G21C15/182Y02E30/30
Inventor 任云赖建永
Owner NUCLEAR POWER INSTITUTE OF CHINA