Thermal field diaphragm temperature control device capable of being used for large-diameter foundation solar telescope

Abstract

The invention provides a thermal field diaphragm temperature control device capable of being used for a large-diameter foundation solar telescope. The thermal field diaphragm temperature control device comprises a thermal field diaphragm (1), a flow adjustment module (2), an air conditioner (3), a water collector (4), a temperature sensor (5), a temperature reading module (7), a water inlet pipe (8), a water outlet pipe (9) and the like. By means of the thermal field diaphragm temperature control device, control over the cooling medium flow and temperature can be controlled at the same time, temperature control over the thermal filed diaphragm can be conducted by adjusting the flow and temperature, the response speed and the temperature control range of the thermal field diaphragm temperature control device can be effectively increased and enlarged respectively, and vibration caused by the excessively large flow speed of the cooling media can be lowered at the same time.

Description

Technical field [0001] The invention relates to the technical field of thermal field diaphragm temperature control of solar telescopes, in particular to a thermal field diaphragm temperature control device that can be used for large-aperture ground-based solar telescopes. Background technique [0002] With the deepening of solar physics research, the scientific community's demand for high-resolution observation of solar active regions is becoming increasingly urgent, and at the same time, solar telescopes continue to develop in the direction of large apertures. Compared with space-based solar telescopes, ground-based solar telescopes have become an important direction for the development of solar telescopes because of their relatively low cost, easy maintenance, and multiple payloads. Divided by aperture, ground-based solar telescopes with an effective aperture of meter-level and above can be called large-aperture ground-based solar telescopes. While the large-aperture solar tel...

AI Technical Summary

Problems solved by technology

However, unlike small-aperture solar telescopes that generally use vacuum-type lens barrels, due to the difficulty in manufacturing large-aperture sealed windows and the pressure birefringence effect, large-aperture solar telescopes have abandoned vacuum-type lens barrels and adopted open-type lens barrels, that is, Optics are exposed to air

Therefore, for a large-aperture ground-based solar telescope with an open mirror tube, the solar radiation power density at the main focus is at least as high as several MW / m 2 , the thermal field diaphragm will also cause a sharp temperature rise of its substrate while cutting off the excessive heat flow input. The temperature rise may not only cause thermal damage to the substrate of the thermal field diaphragm, but also destroy the thermal stability of the air in the lens barrel. The formation of turbulent flow in the optical path of the telescope brings serious internal seeing effect, which eventually deteriorates the image quality of the telescope

Images