Novel supercritical water parallel channel segment adjustable electric heating apparatus

An electric heating device and supercritical water technology, applied in electric heating devices, ohmic resistance heating, heating element materials, etc., can solve the problems of inability to realize, simulate, unstable flow of non-uniform heat flux, etc., to reduce the processing and manufacturing requirements, The effect of keeping the current output direction stable

Active Publication Date: 2017-03-22
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that in the existing research on the instability of non-uniform heat flux flow in thermal experiments, the method of non-uniform wall thickness is used, which requires a high level of processing and manufacturing of the heating channel, and it is impossible to realize the control of power. Distributed transient control and directional adjustment cannot be applied to experimental research with transient adjustment requirements
The p...

Method used

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  • Novel supercritical water parallel channel segment adjustable electric heating apparatus

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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, a novel supercritical water parallel channel section adjustable electric heating device of the present invention includes a heating channel 1 with equal wall thickness, at least three conductive copper bars 2 are arranged on the heating channel 1, and two adjacent conductive copper bars A heating module is connected between the rows 2, and the heating module includes a programmable DC power supply 3 and a one-way diode 4 connected to the programmable DC power supply 3. Two adjacent heating modules form a heating module group, and the two individual heating modules of the heating module group The negative poles of the two unidirectional diodes 4 are connected to the negative poles, the positive poles of the two unidirectional diodes 4 are connected to the positive poles, and the current loops formed by the two adjacent heating modules and the conductive copper bars 2 do not communicate with each other. .

[0035] Wherein, the heating channel 1...

Embodiment 2

[0047] Using the supercritical water parallel channel segmented adjustable electric heating device described in Example 1, the axial non-uniform distribution of the core power of the water-cooled reactor is simulated. During the simulation process, the power transient control and adjustment methods are manual adjustment control and automatic adjustment. control.

[0048] The manual adjustment control method is: each programmable DC power supply has a signal input port, and the operator can adjust the heating power of each programmable DC power supply by inputting a 4-20mA signal at the control terminal of the programmable DC power supply according to the test needs , because each programmable DC power supply is in one-to-one correspondence with a part of the heating channel, that is, a programmable DC power supply is connected to two adjacent conductive copper bars, one-way diodes, and the partial area of ​​the heating channel between two adjacent conductive copper bars A loop...

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Abstract

The invention discloses a novel supercritical water parallel channel segment adjustable electric heating apparatus. The apparatus comprises a heating channel with an equal wall thickness, the heating channel is provided with at least three conductive copper bars, a heating module is connected between two adjacent conductive copper bars, each heating module comprises a programmable DC power source and a unidirectional diode connected with the programmable DC power source, two adjacent heating modules form one heating module group, cathodes of two unidirectional diodes of the heating module group are connected, anodes of the two unidirectional diodes are connected, and two adjacent heating modules do not flow mutually with a current loop formed by the conductive copper bars. According to the invention, segment heating of a supercritical parallel channel is realized, heating power of each segment can realize independent transient adjustment, and simulation of non-uniform heating experiment conditions in reactor thermohydraulic experimental research is satisfied. At present, mechanism experimental research is conducted on a supercritical water cooled reactor by use of the apparatus provided by the invention.

Description

technical field [0001] The invention relates to the technical field of segmental heating of supercritical water parallel channels, in particular to a novel supercritical water parallel channel segmental adjustable electric heating device. Background technique [0002] Nuclear power is the pillar of low-carbon energy supply. Compared with traditional thermal power, hydropower and wind power, nuclear power has the advantages of no emission of carbon dioxide and waste gas, no environmental pollution, stable power generation and low cost. Due to the continuous development of the global economy and the demand for low-carbon emission reduction, nuclear power is favored by more and more countries. In order to further improve the safety and economy of future nuclear power plants, domestic and foreign nuclear power enterprises and scientific research institutions have started the research and development of the fourth-generation nuclear energy system. [0003] The supercritical wate...

Claims

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Application Information

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IPC IPC(8): H05B3/12H05B3/22H05B3/42H05B1/02
Inventor 眭曦臧金光李文林李永亮昝元峰闫晓肖泽军
Owner NUCLEAR POWER INSTITUTE OF CHINA
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