Sealing bayonet device for vacuumizing

Abstract

The invention discloses a sealing bayonet device for vacuumizing, which consists of an air exhaust tap and an operation wrench, wherein the air exhaust tap is arranged on equipment to be vacuumized and comprises an air exhaust tap seat, a screwed plug and a rubber ring; and the operation wrench comprises an exhaust tube, a magnetic steel shaft, a magnetic steel sleeve, a bearing block, a bearing cap, a bearing, a sealing ring, and the like. The left end of the operation wrench is connected with a vacuum pump; and the right end of the operation wrench is connected with the air exhaust tap by a threaded compressed sealing ring in a sealing manner. The magnetic steel sleeve in the atmosphere environment is turned, the magnet steel shaft inside the exhaust tube is driven by a magnetic force and the screwed plug is driven by a spline at the right end of the magnetic steel shaft to compress a rubber ring so as to seal a bayonet. After sealing, the exhaust tube is reversely turned to loose the threaded connection and separate the operation wrench from the air exhaust tap. The bayonet sealing by means of the device is carried out under a vacuum environment and can be repeatedly used multiple times; and the air exhaust tap can be separated from the operation wrench and has small size and light weight. The sealing bayonet device is especially suitable for realizing vacuumizing and bayonet sealing of space equipment such as control moment gyros, inertia momentum wheels, and the like.

Description

technical field [0001] The invention relates to a sealing bayonet device for vacuuming. The device has the characteristics of bayonet sealing in a vacuum environment, reusability and small volume, and is especially suitable for the control that requires strict volume and weight requirements and high vacuum degree. Vacuuming and bayonet sealing of aerospace products such as moment gyroscopes and inertial momentum wheels. Background technique [0002] Aerospace products such as control moment gyroscopes and inertial momentum wheels have rotors with high speed or high speed accuracy. The existence of air resistance will not only increase the power consumption of the system, but also affect the speed accuracy of the rotor. Therefore, these instruments and equipment all require a high degree of vacuum, and require a sealed bayonet operation. At the same time, aerospace products have very strict requirements on volume and weight. Because products such as control moment gyroscop...

AI Technical Summary

Problems solved by technology

This type of device has the characteristics of small size, but it is easy to leak air at the bayonet moment, resulting in the failure of the bayonet sealing operation. At the same time, because the copper tube is flattened, it is disposable and cannot be reused.

For this type of device, it is advisable to place the equipment to be sealed in a larger vacuum container, and use a manipulator to seal the bayonet in the vacuum container. This method requires the design of special tooling, and the cost is high

Images