System and method for directly measuring total helium mass flow rate of primary loop of high-temperature gas cooled reactor

A high-temperature gas-cooled reactor and mass flow technology, applied in indirect mass flow meters, mass flow measurement devices, etc., can solve the problems of increasing helium fan power requirements and large pressure loss, achieving no additional pressure loss, good reliability, Reproduce the effect with high precision

Active Publication Date: 2011-11-23
TSINGHUA UNIV
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Problems solved by technology

It can be seen that there is no position suitable for installing a flow meter for directly measuring the total flow of helium in the primary circuit helium circulation channel of the high-temperature gas-cooled demonstration reactor; although the 14 cold helium risers 4 have installed orifice plates and Venturi tube throttling However, the same flowmeter must be installed to maintain the balance of its flow resistance; at this time,

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  • System and method for directly measuring total helium mass flow rate of primary loop of high-temperature gas cooled reactor
  • System and method for directly measuring total helium mass flow rate of primary loop of high-temperature gas cooled reactor
  • System and method for directly measuring total helium mass flow rate of primary loop of high-temperature gas cooled reactor

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Embodiment Construction

[0038] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0039] An embodiment of the present invention provides a system for directly measuring the total mass flow rate of helium in the primary circuit of a high-temperature gas-cooled reactor, which includes:

[0040] Such as figure 2 , 3As shown, a precision-machined integral elbow flow sensor 5 is installed at the positions of the cold helium riser tubes 102, 106, 202, and 206 of the steam generator of the high-temperature gas-cooled reactor; a capacitive differential pressure transmitter 9 (1152DP) receives the differential pressure signal inside and outside the elbow sensor 5 through the pressure induction pipe 14 inside and outside the elbow flow sensor 5; the capacitive pr...

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Abstract

The invention discloses a system for directly measuring the total helium mass flow rate of a primary loop of a high-temperature gas cooled reactor and belongs to the technical field of air mass flow rate measurement. The system comprises an elbow meter set, and a data acquisition and processing device. Single elbow meter comprises an elbow flow sensor, a differential pressure transmitter, a pressure transmitter and a temperature transmitter; the pressure transmitter is used for measuring helium differential pressure inside and outside the elbow flow sensor; the pressure transmitter is used for measuring helium pressure; the temperature transmitter is used for measuring helium temperature; and the data acquisition and processing device is connected with the output ends of the differential pressure transmitter, and the pressure transmitter and the temperature transmitter of each elbow flow meter respectively and is used for calculating the helium mass flow rate according to differential pressure signals, pressure signals and temperature signals and calculating the total helium mass flow rate of the primary loop of the high-temperature gas cooled reactor by multiplying the helium mass flow rate by a correction factor. The system has a simple structure, is high in reliability and reproductibility accuracy, and does not have additional pressure loss.

Description

technical field [0001] The invention relates to the technical field of gas mass flow measurement, in particular to a system and method for directly measuring the total mass flow of helium in a primary circuit of a high-temperature gas-cooled reactor. Background technique [0002] In the 10MW high-temperature gas-cooled experimental reactor (HTR-10), ceramic coated granular fuel elements are used, with graphite as the moderator and helium as the coolant. The heat carried by the helium in the primary circuit heats the water in the secondary circuit into steam through the steam generator, and sends it to the steam turbine for power generation [1] . In order to ensure the safe operation of the reactor, the mass flow rate of helium in the primary circuit is one of the essential thermal parameters for performing the reactor protection function and calculating the thermal power of the reactor. Due to the limitations of the internal structure of the high-temperature gas-cooled exp...

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Application Information

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IPC IPC(8): G01F1/88
Inventor 仲朔平黄哓津孙艳飞丁业松熊德桂吴宗鑫
Owner TSINGHUA UNIV
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