Degassing device for dissolved gas in insulating oil based on oscillation headspace

A technology of dissolved gas and degassing device, applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as inability to record errors, achieve consistent analysis data, ensure repeatability and accuracy, and good repeatability.

Pending Publication Date: 2020-05-08
HANGZHOU E ENERGY ELECTRIC POWER TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Quantitative calculation is to calculate the final position of the piston rod by accumulatively recording the number of steps of the stepping motor, and it is impossible to record the error caused by factors such as stepping motor out of step.

Method used

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  • Degassing device for dissolved gas in insulating oil based on oscillation headspace
  • Degassing device for dissolved gas in insulating oil based on oscillation headspace
  • Degassing device for dissolved gas in insulating oil based on oscillation headspace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a device for degassing dissolved gas in insulating oil based on oscillating headspace, such as Figure 1-5As shown, it consists of a degassing cylinder 100 (a piston-type sealed cylinder), a stepping motor 120, an oscillating motor 110, a rotating cylinder 112, a carrier gas pipeline, a chromatographic analysis system, and waste oil treatment and oil return equipment. The oscillating motor 110 is a conventional speed-adjusting DC motor.

[0037] The stepping motor 120 is connected with a screw rod 125, the piston rod 127 of the degassing cylinder 100 is located on the same axis as the screw rod 125, and the stepping motor 120 pushes the degassing cylinder piston rod 127 to reset through the screw rod 125. The top of the degassing cylinder 100 is provided with a first pressure sensor 104 for measuring the gas pressure in the degassing cylinder. The top of the screw rod 125 is provided with a film pressure sensor 124 for measuring the pressure wh...

Embodiment 2

[0076] Embodiment 2 laboratory or portable application

[0077] Will Figure 6 Replace the waste oil and return oil treatment equipment with conventional waste oil barrels, and add oil production pumps. The degassing device can be changed into a general laboratory automatic analysis device or a portable automatic analysis device.

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PUM

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Abstract

The invention discloses a degassing device for dissolved gas in insulating oil based on oscillation headspace. The device comprises a degassing cylinder, a stepping motor, an oscillating motor and a rotating cylinder. The stepping motor is connected with a lead screw, a piston rod of the degassing cylinder and the lead screw are located on the same axis, and the stepping motor pushes the piston rod of the degassing cylinder to reset through the lead screw. The degassing cylinder and the stepping motor are fixed on a sliding block, and the sliding block drives the degassing cylinder and the stepping motor to do reciprocating motion in a horizontal state through an oscillating motor to finish degassing. The oscillating motor is connected to the rotating air cylinder through a vertical part of a fixing plate, the degassing air cylinder, the stepping motor and the oscillating motor are driven to rotate through the action of the rotating air cylinder, and switching between the horizontal state and the vertical state is achieved. Accurate measurement of the liquid volume and the degassing volume in the degassing process is achieved, a degassing method the same as laboratory chromatography can be adopted, analysis data are consistent with laboratory chromatography analysis data, and repeatability is good.

Description

technical field [0001] The invention belongs to the field of chromatographic analysis of transformer insulating oil, in particular to a degassing device for dissolved gas in insulating oil based on an oscillating headspace. Background technique [0002] The insulating oil chromatographic on-line monitoring device is a necessary monitoring equipment for the operation of large transformers, and has been widely popularized at present. The insulating oil chromatographic on-line monitoring device mainly includes two parts: the oil-gas separation part and the chromatographic analysis part. Oil and gas separation methods commonly used in on-line monitoring of insulating oil chromatography include membrane permeation, vacuum degassing, dynamic headspace degassing, and circulating headspace degassing. At present, most of the chromatographic analysis of insulating oil in the laboratory adopts the headspace oscillating solution equilibrium degassing method based on the solution equili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/24G01N30/28
CPCG01N30/06G01N30/24G01N30/28
Inventor 明菊兰钱洲亥于志勇余璐静潘芝瑛徐恒昌胡家元王立华张黎晖龚宴涛张小兵
Owner HANGZHOU E ENERGY ELECTRIC POWER TECH
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