Simulated uniform-temperature electrically-driven standard heat source for isotope power supply system development

Abstract

The invention relates to a simulated uniform-temperature electrically-driven standard heat source for isotope power supply system development. The heat source comprises a supporting frame, a ceramic structure body, a heating wire, a heating wire lead, a thermocouple, a thermocouple lead, a heat source outer cladding, an external lead ceramic tube, an internal lead ceramic tube and a mounting and fixing flange, and the mounting and fixing flange is used for fixing the heating wire lead and the thermocouple lead to realize fixation of a lead leading-out experimental environment; the heat source outer cladding wraps the ceramic structure body, and the supporting frame is assembled at the upper end and the lower end of the heat source outer cladding to form a set of structure assembly body; the heating wire lead is led out from the heating wire and is connected to an external power supply end; and the thermocouple lead is led out from one end of the thermocouple and is connected to an external instrument. According to the invention, the problem of lack of long-life, high-reliability, easy-to-maintain and low-cost simulated heat source requirements in the space isotope power supply technology development process is effectively solved.

Description

technical field [0001] The invention relates to a simulated uniform temperature electrically driven standard heat source used for the development of an isotope power supply system, and belongs to the technical field of aerospace nuclear energy development. Background technique [0002] With the development of my country's space exploration technology, future exploration missions will be seriously affected by energy constraints, facing the problem of a sharp decline in solar illumination for deep space exploration and the inability to use solar energy in extremely harsh environments such as the backlight of extraterrestrial objects. In view of this, by the end of 2020, the United States has used more than 50 space isotope power supplies in more than 30 space missions. Among them, the "Perseverance" Mars rover launched in 2020, the isotope power supply used uses the standard General Purpose Heat Source modules (GPHS) with very mature technology as the core of energy supply. T...

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Problems solved by technology

[0004] At present, the existing electric-driven standard heat sources in China have a series of problems such as limited temperature range, high cost, long development cycle, short service life, low reliability, and poor maintainability.

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