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Flow measurement device and flow measurement method for pond type natural circulation reactor

A flow measurement device, a technology of natural circulation, applied in the direction of reactor, nuclear reactor monitoring, nuclear power generation, etc., can solve the problem of not using coolant flow measurement, avoid the complexity of the structure in the reactor, avoid increase, improve reliability and safety sexual effect

Active Publication Date: 2014-06-04
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

However, this method can only be used for coolant flow monitoring in thermal reactors. Most of the neutrons produced in fast reactors are high-energy neutrons. The existing neutron absorbing materials can only absorb low-energy neutrons. The introduction of neutron absorbing materials It will not cause significant changes in the neutron radiation field below the core, so this method cannot be used for the flow measurement of the primary loop coolant in the pool type natural circulation fast reactor

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  • Flow measurement device and flow measurement method for pond type natural circulation reactor
  • Flow measurement device and flow measurement method for pond type natural circulation reactor
  • Flow measurement device and flow measurement method for pond type natural circulation reactor

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Embodiment Construction

[0041] Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

[0042] like Figure 1-Figure 4 As shown, a flow measurement device for a pool-type natural circulation reactor of the present invention includes: a main container 2 and four shell-and-tube heat exchangers 3, and the four shell-and-tube heat exchangers 3 are symmetrically arranged in the main container 2; The shell side 4 of each shell-and-tube heat exchanger 3 is provided with an inlet window 5 and an outlet window 6, and two pressure sensors 8a, 9a are arranged at the inlet window 5 to measure the pressure of the primary circuit coolant 13 at the inlet window 5 , the primary circuit coolant 13 refers to the coolant that takes away the heat generated by the core 7 in the main vessel 2, and the primary circuit coolant 13 circulates in the main vessel 2; the other two pressure sensors 8b, 9b are symmetrical Arranged at the outlet window 6 of the shel...

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Abstract

The invention discloses a flow measurement device and a flow measurement method for a pond type natural circulation reactor. The flow measurement device comprises a shell-and-tube heat exchanger, four pressure sensors, two thermocouples and a flowmeter. According to the flow measurement device, a function of measuring a loop coolant flow in the pond type natural circulation reactor is realized, a system is simple in structure, no flow meter is additionally arranged in the reactor, the frequent maintenance problem caused by arranging the flow meter in the pond type reactor can be prevented, and the reliability and the safety of the reactor can be effectively improved.

Description

technical field [0001] The invention relates to a flow measurement technology, in particular to a flow measurement device and a measurement method of a pool type natural circulation reactor. Background technique [0002] In the pool type natural circulation reactor, the flow rate of the coolant in the primary circuit increases with the increase of the core power. However, in case of blockage in the core, the power increase of the core will not lead to a synchronous increase of the coolant flow in the primary circuit. If there is not enough coolant flow to take away the heat generated by the core, it may cause the fuel assembly of the core to burn. loss, so it is necessary to monitor the coolant flow in pooled natural circulation reactors. [0003] At present, the flow measurement methods of pool type natural circulation reactor mainly include the following methods: [0004] The first way is to use a pressure sensor to measure the pressure drop generated when the coolant pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/032
CPCY02E30/30
Inventor 刘书勇周涛柏云清吴宜灿
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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