CN-122016926-A - Fusion device fused salt heat storage tank heat loss testing system and fusion device fused salt heat storage tank heat loss testing method

CN122016926ACN 122016926 ACN122016926 ACN 122016926ACN-122016926-A

Abstract

The invention provides a fusion device fused salt heat storage tank heat loss testing system and a fusion device fused salt heat storage tank heat loss testing method, which belong to the technical field of fusion device energy storage system core equipment performance detection, and comprise that an outlet of fused salt storage equipment is connected to an inlet of the fused salt heat storage tank through a first pump and a first valve in sequence, and an outlet of the fused salt heat storage tank is connected to an inlet of the fused salt storage equipment through a second pump and a second valve in sequence; the molten salt heat storage tank heater is arranged in the molten salt heat storage tank, the molten salt storage equipment heater is arranged in the molten salt storage equipment, the pipeline electric tracing is laid on the outer surface of the connecting pipeline, the liquid level meter is arranged on the side wall of the molten salt heat storage tank, and the plurality of groups of temperature measuring points are respectively laid on the inner part of the molten salt heat storage tank, the side wall of the heat preservation layer, the top part of the heat preservation layer and the outer surface of the bottom heat preservation structure. The invention can improve the heat storage efficiency of the heat storage tank of the fusion device.

Inventors

LI XUE
DING RUI
LI ZHAOJUN
LU GUANGBAO
ZHAO ZHILI

Assignees

聚变新能(安徽)有限公司
中国科学院合肥物质科学研究院

Dates

Publication Date: 20260512
Application Date: 20260410

Claims (10)

1. A fusion device fused salt heat storage tank heat loss testing system is characterized by comprising a fused salt heat storage tank, fused salt storage equipment, a first pump, a second pump, a first valve, a second valve, a fused salt heat storage tank heater, a fused salt storage equipment heater, pipeline electric tracing, a liquid level meter, a plurality of temperature measuring point groups, an environmental thermometer and an environmental anemometer, wherein an outlet of the fused salt storage equipment is connected to an inlet of the fused salt heat storage tank through the first pump and the first valve in sequence, an outlet of the fused salt heat storage tank is connected to the inlet of the fused salt storage equipment through the second pump and the second valve in sequence, the fused salt heat storage tank heater is arranged in the fused salt heat storage tank, the fused salt storage equipment heater is arranged in the fused salt storage equipment, the pipeline electric tracing is laid on the outer surface of a connecting pipeline, the liquid level meter is arranged on the side wall of the fused salt heat storage tank, the side wall of the heat preservation layer, the top and the outer surface of the heat preservation structure of the bottom of the heat preservation layer are respectively arranged in the fused salt heat storage tank, the temperature monitoring is carried out on each part of the fused salt heat storage tank and the heat loss of the unit area are respectively estimated by utilizing the plurality of temperature measuring point groups under different liquid levels and temperatures.
2. The fusion device molten salt heat storage tank heat loss testing system according to claim 1, wherein the plurality of temperature measuring point groups comprise a molten salt heat storage tank internal temperature measuring point group which at least comprises 9 temperature measuring points and covers not less than 3 horizontal sections and 3 vertical sections.
3. The fusion device molten salt heat storage tank heat loss testing system according to claim 1, wherein the plurality of temperature measuring point groups comprise temperature measuring point groups on the side wall of the heat preservation layer, wherein the temperature measuring point groups at least comprise 9 temperature measuring points and cover at least 3 horizontal sections and 3 vertical sections, the plurality of temperature measuring point groups further comprise temperature measuring point groups on the top of the heat preservation layer, the temperature measuring point groups at least comprise 4 temperature measuring points which are uniformly arranged, and the plurality of temperature measuring point groups further comprise temperature measuring point groups on the outer surface of the bottom heat preservation structure, and the temperature measuring point groups at least comprise 5 temperature measuring points.
4. The fusion device molten salt heat storage tank heat loss testing system of claim 1 further comprising a first thermocouple for measuring the temperature of molten salt in the molten salt storage device.
5. The fusion device molten salt heat storage tank heat loss testing system according to claim 1, wherein the ambient thermometer and the ambient anemometer are arranged at positions around the molten salt heat storage tank, wherein the positions do not affect temperature and wind speed measurement.
6. A fusion device molten salt heat storage tank heat loss test method, adopting the fusion device molten salt heat storage tank heat loss test system according to any one of claims 1 to 5, comprising: placing molten salt in molten salt storage equipment, heating to the lower limit value of the heat storage temperature of the fusion reactor, and then conveying to a molten salt heat storage tank to a set liquid level; Heating molten salt to a target test temperature, stopping heating, recording the temperature of each temperature measuring point and the ambient temperature of the outer surface of the heat-insulating structure in the molten salt heat storage tank, the side wall of the heat-insulating layer, the top of the heat-insulating layer and the bottom of the heat-insulating structure, and continuing an operation period; And calculating the total heat loss amount, the side wall heat loss amount, the top heat loss amount and the bottom heat loss amount of the molten salt heat storage tank at each moment in one operation period, and obtaining time-varying data of each heat loss of the molten salt heat storage tank, wherein the time-varying data are used for evaluating the heat loss of the molten salt heat storage tank.
7. The fusion device molten salt heat storage tank heat loss testing method according to claim 6, wherein the target testing temperature at least comprises a fusion reactor heat storage temperature lower limit value and a fusion reactor heat storage temperature upper limit value.
8. The fusion device molten salt heat storage tank heat loss testing method according to claim 6, wherein before each liquid level change, molten salt in the molten salt heat storage tank is returned to the molten salt storage device through the second pump and the second valve so as to adjust the liquid level to a medium liquid level or a low liquid level.
9. The fusion device molten salt heat storage tank heat loss testing method according to claim 6, wherein the temperatures of the temperature measuring point groups at the same time are respectively averaged for calculation of subsequent heat loss.
10. The fusion device molten salt heat storage tank heat loss testing method according to claim 6, wherein the total heat loss amount of the molten salt heat storage tank at each moment is calculated according to the molten salt mass, the specific heat capacity and the internal average temperature change rate, and the side wall heat loss amount, the top heat loss amount, the bottom heat loss amount, the side wall heat loss amount, the top heat loss amount and the bottom heat loss amount are calculated by combining the wall area, the ambient temperature, the wind speed and the infrared emissivity.

Description

Fusion device fused salt heat storage tank heat loss testing system and fusion device fused salt heat storage tank heat loss testing method Technical Field The invention belongs to the technical field of performance detection of core equipment of an energy storage system of a fusion device, and particularly relates to a fusion device fused salt heat storage tank heat loss testing system and method. Background With the development of controlled nuclear fusion energy technology, fusion stacks are gradually advancing from a physical testing stage to an engineering demonstration and commercial application stage as an advanced energy device with high energy density, low carbon emission and high safety. In a fusion reactor energy utilization system, high-grade heat energy generated by fusion plasma is usually required to be recovered and utilized through an energy conversion system, wherein an energy storage system is used as a key intermediate link for realizing connection between a heat source and a downstream power generation system, so that the contradiction between intermittent operation of the fusion reactor and the requirement of the power generation system on a stable heat source can be solved, and the stability and the reliable operation life of the system can be improved. The fused salt heat storage tank is core equipment in the existing fusion reactor heat storage system, part of heat in the fusion reactor operation period is transferred to fused salt and stored in the fused salt heat storage tank, and high-temperature fused salt is adopted to supply heat to the outside during the fusion reactor suspension period. The fused salt heat storage tank for the fusion reactor has the remarkable characteristics of high heat storage temperature, large heat storage capacity and the like, and the heat loss characteristic is particularly remarkable under the characteristics of high temperature and large capacity, so that the total amount of heat dissipated by the heat storage tank and the heat storage efficiency of a heat storage system are directly influenced. At present, the prior art mainly focuses on the anti-condensation heat requirement, mass and heat transfer process, energy storage test simulation of molten salt and the like of a heat storage tank, and does not focus on the heat loss performance test of the molten salt heat storage tank. Such as chinese patent application CN202510788075.9 (a prediction method of the anti-condensation heat requirement of the molten salt storage tank based on the physical information neural network), chinese patent application CN201610120525.8 (a test device for the heat and mass transfer process of the floating-roof crude oil storage tank and a test method thereof), chinese patent application CN202111372371.9 (a high-temperature chloride photo-thermal and energy storage circulation simulation test platform and test method), chinese patent application CN202111329333.5 (a high-temperature photo-thermal circulation simulation test platform and test method of binary chloride), and the like. Therefore, as the molten salt heat storage tank is core equipment of the fusion reactor heat storage system, the heat loss characteristic of the molten salt heat storage tank directly affects the efficiency of the whole heat storage system and the power generation capacity of the power generation system, and the focus of the current industry is mostly focused on the air tightness detection, mechanical property test and the like of the heat storage tank, the heat loss performance test device and the test method of the molten salt heat storage tank still belong to the blank, a test system and a corresponding test method capable of simulating the heat loss of the heat storage tank are needed, and reliable test basis and data support can be provided for design optimization and operation strategy formulation of the fusion reactor heat storage system. Disclosure of Invention The invention provides a fusion device fused salt heat storage tank heat loss test system and a fusion device fused salt heat storage tank heat loss test method, which are used for testing the heat loss quantity of a fusion device heat storage tank, acquiring the heat loss rule of each wall surface of the heat storage tank in an operation period, evaluating the heat loss characteristics of each heat preservation layer of the heat storage tank, and can be used for testing the heat loss parameters of the fused salt heat storage tank under different liquid levels and different temperatures, evaluating the heat loss quantity of each wall surface so as to be convenient for pertinently optimizing the heat preservation structure outside the heat storage tank, and have an important role in improving the heat storage efficiency of the fusion device heat storage tank. In order to achieve the above purpose, the invention adopts the following technical scheme: A fusion device fused salt heat storage tank heat loss testing system comprises