Scanning mechanism of isothermal design
A scanning mechanism and isothermal technology, applied in the field of scanning mechanism, can solve the problems of uneven surface distribution, large fluctuation of external heat flow, affecting working performance, etc., and achieve the effects of mature thermal design method, low product and material cost, and high reliability.
Active Publication Date: 2013-12-18
SHANGHAI SATELLITE ENG INST
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The external heat flow on the scanning mechanism fluctuates greatly and the distribution on each surface is extremely uneven, which causes the temperature gradient of the scanning mechanism
[0003] As a long-term working moving part of the load, the scanning mechanism has high requirements on the reliability of its movement. It must be ensured that it can work reliably under complex external heat flow conditions, and avoid jamming due to large temperature gradients, which will affect its working performance.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The technical solution of the present invention will be described in further detail below with reference to the drawings and specific embodiments.
[0018] figure 1 As shown, the scanning mechanism of the isothermal design provided by the present invention is mainly composed of a scanning mechanism frame 1 processed as a whole, a thermal control coating, an externally attached heat pipe 2, a thermally conductive filler, an electric heater 3, a thermistor 4 and The radiator plate 5 is formed.
[0019] In this example:
[0020] The material of the scanning mechanism frame 1 is aluminum-based silicon carbide, and the thermal conductivity is 235W / (m·°C).
[0021] The thermal control coating adopts Z306 black paint with emissivity greater than 0.90.
[0022] The external heat pipe 2 adopts a 25×12 double-hole rectangular heat pipe.
[0023] The thermal conductive filler adopts D3 thermal conductive silicone grease.
[0024] The electric heater 3 adopts a polyimide const...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A scanning mechanism of an isothermal design comprises a scanning mechanism frame which is integrally machined, thermal control coatings, externally-pasted heat pipes, heat conduction filler, electric heaters, thermistors and a heat dissipating plate, wherein the scanning mechanism frame which is integrally machined comprises four planes in the east direction, the west direction, the south direction and the north direction respectively, and thus an east and west supporting mechanism and a south and north supporting mechanism are combined into a whole; the surface of the scanning mechanism is coated with the thermal control coating; one ends of the externally-pasted heat pipes are installed on the planes of the scanning mechanism, and the other ends of the externally-pasted heat pipes are installed on the inner surface of the heat dissipating plate; the heat conduction filler is filled between the externally-pasted heat pipes and the mounting faces of the externally-pasted heat pipes; the electric heaters and the thermistors are arranged on the four planes of the scanning mechanism; the interior of the heat dissipating plate is coated with the thermal control coating, an OSR secondary surface mirror is pasted to the exterior of the heat dissipating plate, and heat of the scanning mechanism is dissipated to cold space. According to the scanning mechanism of the isothermal heat design, the temperature gradient is controlled, and meanwhile the temperature level of the scanning mechanism is controlled.
Description
technical field [0001] The present invention relates to a scanning mechanism, more specifically, to a scanning mechanism with isothermal design. Background technique [0002] With the development of the earth imaging observation payload technology, the accuracy of the earth observation and the scanning area requirements are continuously improved, and the payload is required to obtain the earth surface data in a fast and timely manner. The original single scanning mechanism has been developed to the stage of two-dimensional scanning, which includes scanning mechanisms in both east-west and north-south directions. The application of this technology also caused the increase of the caliber of the load hood, thus bringing about a sharp increase in the external heat flow entering the hood. The external heat flow on the scanning mechanism fluctuates greatly and the distribution on each surface is extremely uneven, which causes the temperature gradient of the scanning mechanism. ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/24
Inventor 胡炳亭江世臣付鑫刘炜葳
Owner SHANGHAI SATELLITE ENG INST