Heat loss testing method of thermodynamic comprehensive testing device

A technology of comprehensive testing and testing methods, applied in the testing of machines/structural components, measuring devices, instruments, etc., can solve problems such as difficult measurement, low accuracy, and low reliability, and achieve strong operability and accuracy High, reliable effect

Active Publication Date: 2016-08-31
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the heat loss test method of the traditional thermal comprehensive test device is to measure the fluid flow rate and inlet and outlet temperature of each equipment one by one, then calculate the thermal power absorbed by the fluid in each equipment and find out the thermal power of all equipment. The total heat loss of the test device can be obtained by subtracting the total heat power from the power of the heat source. This test method is difficult to measure the temperature difference at low power levels and the flow rate at low flow rates, and the accuracy is poor. There is a certain error in the accumulation of heat loss power , low reliability, unable to me

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  • Heat loss testing method of thermodynamic comprehensive testing device

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Embodiment 1

[0052] A heat loss test method of a thermal comprehensive test device of the present invention comprises the following steps,

[0053] a. Determine the heat loss test conditions

[0054] Determine the pressure and temperature of the reactor and the primary circuit system, the waste heat removal system, and the temperature of the pressurizer 4, that is, determine a working point, including the reactor and the primary circuit system, and the pressure of the waste heat discharge system is 15MPa, and the reactor and the primary circuit The temperature of the system is 300°C, and the temperature of the regulator 4 is 350°C.

[0055] b. Establish heat loss test conditions

[0056] b.1. According to the heat loss test conditions determined in step a, lay insulation cotton in the reactor, the primary loop system, and the secondary loop system, start the main pump 6 and the waste heat discharge pump 11, and put the main heat source simulator 1 into the reactor for simulation The devi...

Embodiment 2

[0066] Such as figure 1 As shown, the thermal comprehensive test device includes a reactor and a primary circuit system, a secondary circuit system, a waste heat removal system, and a cold source simulation system. The reactor and a primary circuit system include a main heat source simulator 1 and a secondary heat source simulator 2 , reactor simulator 3, pressurizer 4, steam generator simulation body 5, main pump 6, the main heat source simulator 1 is connected with reactor simulator 3, main pump 6, steam generator simulation body 5 in sequence, and the secondary heat source The simulator 2 is connected with the reactor simulator 3 and the steam generator simulation body 5 sequentially through the voltage stabilizer 4 .

[0067] Among them, the reactor and the primary loop system are also called the main system of the primary loop of the reaction. The function of the voltage stabilizer 4 in this system is to control the pressure of the coolant and prevent the core from deviat...

Embodiment 3

[0082] The present embodiment is as the comparative example of embodiment 1 and 2:

[0083] The heat loss test method of the existing thermal comprehensive test device will be described, including the following steps:

[0084] a. Determine the heat loss test conditions

[0085] Same operation as step a in Example 1.

[0086] b. Establish heat loss test conditions

[0087] The operation is the same as step b in Example 1.

[0088] c. Measure flow and temperature parameters

[0089] Keep the power of main heat source simulator 1 and secondary heat source simulator 2 constant, and stabilize the loop parameters for 20 minutes; measure the flow rate of main pump 6 and waste heat discharge pump 11, and measure reactor simulator 3, steam generator simulation body 5, and main pump 6. Equipment such as steam turbine simulator 8, waste heat discharge cooler 10, waste heat discharge pump 11, cold source simulator 13, and the inlet and outlet temperatures of pipelines between each devic...

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Abstract

The invention discloses a heat loss testing method of a thermodynamic comprehensive testing device. The heat loss testing method comprises the following steps: a, determining a heat loss testing working condition; b, establishing the heat loss testing working condition; c, blocking a cold source of a two-circuit system, a residual heat discharging system and a cold source simulation system; d, carrying out a heat loss test; and e, judging a heat balance state. The heat loss testing method disclosed by the invention is simple and reliable; heat loss power of the thermodynamic comprehensive testing device is the sum of powers of heat sources of a main heat source simulator and a secondary heat source simulator under a heat balance state. The heat loss testing method disclosed by the invention does not depend on low- speed flow speed measurement accuracy, does not have high requirements on temperature measurement accuracy and does not need to carry out complicated data processing; and no accumulated errors exist and the high-accuracy and high-reliability heat loss testing power can be obtained.

Description

technical field [0001] The invention relates to the technical field of heat loss testing, in particular to a heat loss testing method of a thermal comprehensive test device. Background technique [0002] In the field of nuclear power technology, the thermal comprehensive test device must accurately simulate the nuclear reactor system and the prototype of the ad hoc safety system. The thermal boundary simulation is one of the core issues of the overall simulation. If the thermal boundary simulation is too distorted, even if the heat source is well obtained However, if the simulation is performed, the cooling capacity of the ad hoc safety system still has a large distortion, which means that the test results cannot be fed back to the prototype, and the effectiveness of the thermal comprehensive test cannot be guaranteed. Therefore, the thermal boundary must be accurately simulated, and the basis of thermal boundary simulation is to accurately obtain the heat loss power of the ...

Claims

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Application Information

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IPC IPC(8): G01M99/00
CPCG01M99/002
Inventor 徐建军周慧辉黄彦平谭曙时朱海雁
Owner NUCLEAR POWER INSTITUTE OF CHINA
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