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Protection device for prolonging service life of ionization gauge

A technology of protection device and vacuum ionization gauge tube, which is applied to vacuum gauges, particle separation tubes, air pressure measurement discharge tubes and other directions using ionization effect, can solve problems such as affecting product quality, increasing production costs, and poor working environment, and achieves good performance in motion. Effects of speed reduction, extended service life, temperature reduction

Inactive Publication Date: 2018-02-23
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the on-site equipment works continuously for 24 hours, there are many types of vacuum heat treatment parts, and the working environment of the ionization gauge is poor, resulting in the scrapping of 3 ionization gauges per year for a single equipment
While the production cost increases, there is also the risk of affecting product quality

Method used

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  • Protection device for prolonging service life of ionization gauge

Examples

Experimental program
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Effect test

Embodiment

[0029] In this embodiment, the diameter of the equipment vacuum degree detection port where the protection device is installed is 25mm, therefore, the connecting flange 3, metal filter screen 1, sealing ring 4 and connecting pipe 2 that are compatible with the equipment vacuum degree detection port are made , the sealing ring 4 is a rubber ring KF25 with an outer diameter of 30mm, the metal filter 1 is a stainless steel wire grid with a steel wire diameter of 1mm, the outer diameter of the metal filter 1 is 20mm, and the connecting pipe 2 is a serpentine bent at 90 degrees The connecting pipe 2 is a quarter-arc shape with an inner diameter of 10mm. All the connecting pipes 2 may be on the same plane or not. A circular groove, the circular groove is concentric with the connecting flange, and the metal filter screen 1 is directly opposite to the circular groove.

[0030] The protection device of the present invention has the advantages that the device is easy to realize, easy to...

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Abstract

The invention belongs to a protection device of a vacuum measurement system, in particular to a protection device for prolonging the service life of an ionization gauge. The protection device comprises a bending tube, wherein the bending tube comprises at least two connecting pipes which are sequentially connected; a connection part between two adjacent connecting pipe is provided with a metal screen; a free end of the connecting pipe at one end of the bending tube is connected with an equipment vacuum detection port and another metal screen is arranged between the connecting pipe and the equipment vacuum detection port; and the free end of the connecting pipe at the other end of the bending tube is connected with a vacuum ionization gauge connection port and another metal screen is arranged between the connecting pipe and the vacuum ionization gauge connection port. Conductive ions can be prevented from being inhaled into the ionization gauge through the protection device, so that theservice life of the ionization gauge can be prolonged.

Description

【Technical field】 [0001] The invention belongs to a protection device for a vacuum measurement system, in particular to a protection device for prolonging the service life of an ionization gauge. 【Background technique】 [0002] As a high vacuum detection sensor of vacuum equipment, the ionization gauge has very high requirements on the cleanliness inside the equipment. Since the vacuum ionization gauge uses high-pressure gas ionization for measurement, it will generate an electric field adsorption effect on the suspended conductive ions inside the device. Once the conductive ions are sucked into the ionization regulation, the reading of the ionization regulation will deviate, and in severe cases, the ionization regulation will be scrapped. Since the on-site equipment works continuously for 24 hours, there are many types of vacuum heat treatment parts, and the operating environment of the ionization gauge is poor, resulting in the scrapping of 3 ionization gauges per year fo...

Claims

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Application Information

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IPC IPC(8): H01J41/02G01L21/30
CPCH01J41/02G01L21/30
Inventor 雷勇古宏博王瑞范凯李茂安马强伟王晋张华
Owner AECC AVIATION POWER CO LTD
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