Oil-gas permeability testing apparatus based on hollow fibrous membrane and oil-gas permeability testing method
A test device and permeation device technology, applied in the field of electrical equipment insulation on-line monitoring and fault diagnosis, can solve the problems of oil not meeting the recovery standard, low degassing efficiency, poor economy, etc., meet the requirements of on-line monitoring technology, and be easy to operate , the effect of simple structure
Inactive Publication Date: 2014-11-19
CHONGQING UNIV +1
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Problems solved by technology
It means that the gas released from the oil is first collected by trapping, and then the gas is desorbed when it is to be used. The operation is simple and the sensitivity is high, but it will cause some pollution to the oil, which will cause the oil to fail to meet the recovery standard and the economy is poor.
[0008] The polymer membrane method is a method of oil and gas separation that has been studied in recent years. It is generally made of materials such as polytetrafluoroethylene (PIFE), polyimide (PI), polyvinylidene fluoride, and polyhexafluoropropylene. In addition to mechanical strength, it also has the characteristics of oil resistance and high temperature resistance. Compared with other degassing methods, the cost is lower, and it does not pollute and consume transformer oil, but the degassing efficiency is low. The oil-gas equilibrium time is generally more than 24 hours, or even several sky
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[0035] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.
[0036] The test device of the oil-gas permeation based on the hollow fiber membrane provided by the present invention is as figure 2 As shown, it includes an oil storage tank, an oil-gas permeation component, a temperature control device and a circulation device; the oil storage tank is connected to the oil-gas permeation device through the circulation device, and the temperature control device is used to adjust the temperature inside the oil-gas permeation device.
[0037] The oil and gas permeation device is as attached figure 1 As shown, the oil-gas permeation box includes a cubic structure, one or more heating rods installed on the wall of the oil-gas permeation bo...
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Abstract
The invention provides a gas permeability testing apparatus based on a hollow fibrous membrane. The oil-gas permeability testing apparatus based on the hollow fibrous membrane comprises an oil storage tank, an oil-gas permeability device, a temperature control device and a circulating device, wherein the oil storage tank is connected with the oil-gas permeability device through the circulating device, and the temperature control device is used for adjusting the temperature inside the oil-gas permeability device. Multi-component gas removed from the oil-gas permeability device enters a chromatographic column in a constant-temperature box under the driving of carrier gas, and mixed gas is separated. The monitoring characteristics of the multi-component mixed gas in transformer oil are tested, by analyzing the influencing of the amount of sample gas, the flow rate of the carrier gas and the temperature on the appearance time and a peak form, an optimal working parameter of an entire test system can be determined, and the effective separation and respective detection of the mixed gas in the transformer oil can be realized.
Description
technical field [0001] The invention belongs to the field of on-line monitoring and fault diagnosis of electrical equipment insulation, in particular to an experimental device based on a hollow fiber membrane for high-efficiency separation of oil and gas during on-line analysis of dissolved gas in transformer oil. Background technique [0002] As the core of energy conversion in the process of power transmission and distribution, power transformers are the most important and critical equipment in the safe operation of equipment. Serious accidents of transformers can lead to interruption of power supply and cause huge economic losses. Studies have shown that transformer faults caused by internal insulation problems account for the main part. The type, content and change trend of dissolved gas in transformer oil during operation can effectively reflect the operating status of the transformer; tracking and monitoring the change of dissolved gas in transformer oil and monitorin...
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IPC IPC(8): G01N15/08
Inventor 陈伟根熊友强王有元刘志强周渠邹经鑫万福
Owner CHONGQING UNIV