Big-caliber foundation solar telescope hot field diaphragm cooling device based on jet cooling principle

Abstract

The invention provides a big-caliber foundation solar telescope hot field diaphragm cooling device based on a jet cooling principle. The device comprises a liquid inlet channel, a pressure cavity, a spraying pipe, a jet flow cavity, a reflection panel and a liquid outlet channel. According to fluid continuity and a jet flow cooling principle, the big-caliber foundation solar telescope hot field diaphragm cooling device greatly improves cooling efficiency, and overcomes the defects that a traditional hot field diaphragm cooling device using forced water cooling needs large amounts of cooling liquid and is not uniform in temperature distribution after cooling, and the like. The hot field diaphragm cooling device has high cooling efficiency and can achieve good cooling effects with small cooling liquid flow. Meanwhile, a surface temperature of a diaphragm is low after cooling, temperature distribution is uniform, damage to air seeing in the working process of the diaphragm of a hot field is further reduced, and telescope imaging quality is effectively improved.

Description

technical field [0001] The invention relates to a solar telescope thermal field diaphragm cooling technology and equipment thereof, in particular to a cooling device based on the jet cooling principle and applied to the thermal field diaphragm of a large-diameter ground-based solar telescope. Background technique [0002] The sun provides the necessary guarantee for the survival of all things on the earth. At the same time, the activities of the sun also directly affect the earth's climate, communication and many other aspects. In recent years, with the development of solar physics, space astronomy and other sciences, the research on the sun has gone deep into the research on many local phenomena in the solar active region (such as sunspots, flares, solar prominences, solar magnetic field, etc.). [0003] Using ground-based solar telescopes to directly observe the sun has become one of the important means of studying solar activities. Whether the solar telescope can provide...

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Problems solved by technology

[0008] The technical solution of the present invention is to provide a high-efficiency cooling device for the thermal field diaphragm of a large-aperture ground-based solar telescope, so that it can only produce a very limited temperature rise under extremely high temperature loads, so that the temperature rise affects the air. The seeing degree reduces the aberration introduced by the beam in the field of view when it passes through the thermal field diaphragm to an acceptable range, and reduces the adverse effects of excessive temperature rise during the working process of the thermal field diaphragm on the final imaging quality of the telescope

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