Sealed cabin perspective window and use thereof

A technology of sealed cabin and see-through window, applied in the theodolite and other directions, can solve problems such as measurement, and achieve the effect of high light transmittance

Inactive Publication Date: 2018-01-05

BEIJING INST OF SPACECRAFT ENVIRONMENT ENG

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Problems solved by technology

[0004] Aiming at the technical problem that measuring instruments such as theodolite cannot measure the equipment in the cabin under special environments such as pressurization and thermal vacuum in the sealed cabin of the...

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Method used

Consider sealing cabin body see-through window and glass installation and add sealing stri...

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Abstract

The invention discloses a sealed cabin perspective window. The sealed cabin perspective window comprises a bottom frame part, perspective glass, and sealing rings, pressing rings and fasteners respectively arranged on two sides of the perspective glass. The bottom frame part is a support which is used for fixing the cabin body and is provided with a groove. The sealing rings are arranged in two sides of the perspective glass and are pressed into the groove through the pressing rings. The fasteners are fixed to the bottom frame part through threaded holes evenly arranged on the bottom frame part. The invention also discloses a use of the sealed cabin perspective window. The sealed cabin perspective window has pressure resistance, heat resistance and high light transmittance. A test result shows that a device measurement accuracy error shown by a theodolite is within 5s. The sealed cabin perspective window satisfies the existing requirements on an installation precision of a spacecraft product.

Application Domain

Theodolites

Technology Topic

TransmittanceFastener +5

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Examples

Experimental program(1)

Example Embodiment

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, which are all exemplary and are not intended to give any indication or description of the protection scope thereof.

[0021] Such as figure 1 As shown, the see-through window of the sealed cabin of the present invention includes: a bottom frame part 1, a glass 2, a pressure ring 3, a sealing ring 4, a sealing ring 5, and a fastening 6. Process the bottom frame part 1 and the glass 2, and assemble the see-through device. The bottom frame part 1 of the fluoroscopy device is provided with a sealing groove. Install the sealing ring 5 on the groove, then install the glass 2, install the sealing ring 5 on the glass 2, and finally install the pressing ring 3 on the glass 2. During the installation process Install the fastener 6 according to the design installation position of the fastener to fasten the perspective window of the sealed cabin.

[0022] Such as figure 2 As shown, the structural configuration of the sealed cabin perspective window of the present invention under the pressure in the sealed cabin or the thermal vacuum environment in the sealed cabin applies theodolite for perspective collimation measurement method, including: theodolite 21, the sealed cabin perspective window 22, and The reference mirror 24 and the sealed cabin body 25 of the measured object are installed on the sealed cabin body 25 with the sealed cabin perspective window 22. The theodolite 21 passes through the perspective device 22 along the measurement optical path 23 to implement the alignment of the measured object reference mirror 24 Straight measurement.

[0023] The implementation steps of the theodolite perspective collimation measurement method and device are as follows:

[0024] 1) Machining bottom frame parts

[0025] When designing and processing, consider the installation of the perspective window of the sealed cabin and the glass installation and the sealing strip to the connection part with the cabin to ensure good sealing.

[0026] 2) Processed glass

[0027] a. The material is selected tempered K9 glass;

[0028] b. Surface finish: GBIII level;

[0029] c. The parallelism of the two planes of the glass: less than 15″.

[0030] d. The glass is coated on both sides, and the transmittance of the glass is not less than 98% when the incident angle is 0° and the wavelength range is 400mm to 750mm.

[0031] e. It can withstand a pressure of 0.5MPa under the specified size conditions of the product.

[0032] 3) Assemble the perspective device

[0033] a. Assemble the fluoroscopy device in a clean environment with moderate temperature and humidity to ensure that the glass is not contaminated.

[0034] b. The operator wears gloves and a mask. Place the bottom frame part 1-1 of the fluoroscopy device on a clean tabletop, and take the sealing ring 1-4 and install it in the groove on the bottom frame part 1-1.

[0035] c. Take the glass 12 and install it on the bottom frame member 11.

[0036] d. Take the sealing ring 15 and install it on the glass 12.

[0037] e. The pressure ring 13 is installed on the glass 12.

[0038] f. Install fasteners 16.

[0039] g. Measure the leak rate of the fluoroscopy device.

[0040] 4) Connect the see-through window 22 of the sealed cabin to the sealed cabin 25 by means of fasteners (ensure the sealing requirements).

[0041] 5) Install the test object 24 in the sealed cabin 25.

[0042] 6) Set the state of the sealed cabin body 25, that is, the cabin body is inflated to maintain pressure, or evacuated to a state that meets the design requirements.

[0043] 7) Set up the theodolite 21, the position of the theodolite 21 is selected in the forward direction of the reference mirror of the measured object 24.

[0044] 8) The theodolite 21 performs a collimation measurement on the reference mirror of the measured object 24, and saves the horizontal and pitch angles of the theodolite 21.

[0045] 9) Complete the measurement of the posture angle of the measured object in the sealed cabin by the theodolite through the perspective device.

[0046] Although the specific embodiments of the present invention are described and illustrated in detail above, it should be pointed out that we can make various equivalent changes and modifications to the above-mentioned embodiments according to the concept of the present invention, and the resulting functional effects are still not there. Anything beyond the spirit covered by the specification and drawings should fall within the protection scope of the present invention.

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Description & Claims & Application Information

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Inorganic powder-containing resin composition, film-forming material layer, transfer sheet, method for producing substrate with dielectric layer, and substrate with dielectric layer

InactiveUS20060199883A1High light transmittanceExcellent surface smoothnessGas-filled discharge tubesPlastic/resin/waxes insulatorsTransmittanceMeth-

Owner:NITTO DENKO CORP

Classification and recommendation of technical efficacy words

High light transmittance

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Sealed cabin perspective window and use thereof

A technology of sealed cabin and see-through window, applied in the theodolite and other directions, can solve problems such as measurement, and achieve the effect of high light transmittance

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Examples

Example Embodiment

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Description & Claims & Application Information

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