Quartz lamp for high-power high-overload environments

Abstract

The invention discloses a quartz lamp for high-power high-overload environments. The quartz lamp comprises a porous quartz tube, a plurality of heating wires, leads and press sealing plates, wherein the heating wires are mounted in the porous quartz tube; the leads are respectively connected with two ends of each heating wire; the press sealing plates are used for packaging two ends of the poroustube; a plurality of clamping points are arranged on the inner tube wall of the porous quartz tube; a groove is formed, at each clamping point, in the inner part of the porous quartz tube; a retainerfor limiting the corresponding heating wire to move along the axial direction of the quartz lamp is mounted in each groove; and the retainers are sleeved on the heating wires and connected with the heating wires. Through the setting of the plurality of clamping points and the retainers, the retainers are limited to move in the tube wall, so that double-end stress of the heating wires is avoided, multi-point stress is realized and tensile strength of lamp filaments at two ends is shared to the greatest extent; and by adoption of the quartz lamp, the warming speed can be improved, so that the rapid temperature change requirement of transient high-temperature heat centrifugal test can be satisfied.

Description

technical field [0001] The invention belongs to the technical field of transient high-temperature equipment, and in particular relates to a quartz lamp used in a high-power and high-overload environment. Background technique [0002] Aircraft such as the American X-15 have become research hotspots of major aerospace powers in the world since the beginning of the 21st century because of their important characteristics such as fast flight speed, long stay in the air, and high maneuverability. With the substantial increase of relevant flight speeds, the high-temperature thermal environment caused by aerodynamic heating becomes more and more severe; when the aircraft flies at a high Mach, the stagnation point temperature exceeds 1000 degrees, The complex force environment such as vibration, overload and noise induced by the flow field around the outer surface. Foreign research institutions recognized the impact of transient thermal-mechanical composite environment on aircraft e...

AI Technical Summary

Problems solved by technology

[0004] 1. The temperature rise rate of the heating belt is slow (up to 1°C / min), and the maximum temperature does not exceed 300°C. The high-temperature tape used to wrap the heating belt may spontaneously ignite when the temperature rises to a certain level

[0005] 2. The temperature rise rate of the heating furnace is slow (up to 10°C / min), and the thermal inertia is large, so it is not suitable for the rapid temperature change requirements of the transient high temperature thermal centrifugation test

[0006] The reasons for the above shortcomings may be due to the fact that at the beginning of the establishment of experimental capabilities, there is often a process of first solving from scratch; on the other hand, there is less heating demand for transient high temperature-large overload thermal composite tests

Images