CN-121977105-A - Gas valve control device for transformer oil chromatographic analysis test

CN121977105ACN 121977105 ACN121977105 ACN 121977105ACN-121977105-A

Abstract

The invention discloses a gas valve control device for a transformer oil chromatographic analysis test, which belongs to the technical field of transformer monitoring and comprises a gas component analysis module, a gas information acquisition module, a valve switch control module and an electromagnetic valve, wherein the gas valve control device is arranged at a gas outlet of a steel cylinder used for the transformer oil chromatographic analysis test, the gas component analysis module is used for identifying gas types, the gas information acquisition module is used for acquiring gas flow rate and gas flow rate, and the valve switch control module is used for judging that the electromagnetic valve at the gas outlet of the steel cylinder used for the transformer oil chromatographic analysis test is not closed and controlling the electromagnetic valve to be closed when the gas flow rate is greater than a gas flow rate threshold or the gas flow rate is greater than a gas flow rate threshold.

Inventors

WANG HU
CHEN JIEZHENG
YE JIANZHONG
LIU AIHUA
Zhou Qiurou
WU DONGLIU
Cai Kaile
LIANG YUPENG
XU YANBIN
LIANG HAOQUAN
SHAO JI
Li Wandai
GAN JIANDA
HUANG SHUAIJUN
LI HAOXIAN
YI HUAQIANG

Assignees

广东电网有限责任公司江门供电局

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (10)

1. The gas valve control device for the transformer oil chromatographic analysis test is characterized by comprising a gas component analysis module, a gas information acquisition module, a valve switch control module and an electromagnetic valve; the gas valve control device is arranged at a gas outlet of a steel bottle used for transformer oil chromatographic analysis test; the gas component analysis module is used for analyzing the gas component at the gas outlet of the steel bottle used for the transformer oil chromatographic analysis test and obtaining corresponding gas types according to the gas component, wherein the gas types comprise standard gas and inert gas; The gas information acquisition module is used for acquiring the gas flow rate and the gas flow rate at the gas outlet of a steel bottle used for transformer oil chromatographic analysis test and transmitting the acquired gas flow rate and gas flow rate to the valve switch control module; the valve switch control module is used for comparing the gas flow rate with a preset gas flow rate threshold value, and if the gas flow rate is larger than the gas flow rate threshold value or the gas flow rate is larger than the gas flow rate threshold value, judging that an electromagnetic valve at a gas outlet of a steel bottle used for transformer oil chromatographic analysis test is not closed, controlling the electromagnetic valve to be closed immediately when the gas type is standard gas, and controlling the electromagnetic valve to be closed after a preset time period when the gas type is inert gas.
2. The gas valve control device for transformer oil chromatographic analysis test according to claim 1, wherein the gas component analysis module comprises a gas path unit, a sample injection unit, a separation unit and a detection unit; The gas path unit is used for drying and purifying gas at the gas outlet of a steel bottle used for transformer oil chromatographic analysis test and then conveying the gas to the sample injection unit; The sample injection unit is used for completely gasifying the entering gas and conveying the completely gasified gas to the separation unit; The separation unit is used for separating each component in the gas so that the separated component gas sequentially enters the detection unit at different times; The detection unit is used for detecting the gas of each component to obtain the gas component of the gas.
3. The gas valve control device for transformer oil chromatographic analysis test according to claim 2, wherein said obtaining a corresponding gas species from said gas component comprises: When the gas component contains hydrogen, at least one hydrocarbon gas and carbon oxide, the gas type in the steel cylinder used for the transformer oil chromatographic analysis test is judged to be standard gas, and when the gas component contains only one inert gas, the gas type in the steel cylinder used for the transformer oil chromatographic analysis test is judged to be inert gas.
4. The gas valve control device for transformer oil chromatographic analysis test according to claim 3, wherein the gas path unit comprises a purification drying pipe and a flow controller; the purification drying pipe is used for drying and purifying gas at the gas outlet of a steel bottle used for transformer oil chromatographic analysis test; and the flow controller is used for controlling the flow of the dried and purified gas entering the sample injection unit.
5. The gas valve control device for transformer oil chromatographic analysis test according to claim 4, wherein the separation unit comprises a chromatographic column; The chromatographic column comprises a stationary phase and a mobile phase; The chromatographic column is used for separating each gas composition in the gas according to the concentration of each gas component in the fixed phase and the concentration of each gas component in the mobile phase, so that each separated component gas enters the detection unit successively at different times.
6. The gas valve control device for transformer oil chromatographic analysis test according to claim 5, wherein the detection unit comprises a detector and a signal amplifier; The detector is used for detecting the entering component gases to obtain corresponding analog signals; The signal amplifier is used for amplifying the analog signal.
7. The gas valve control device for transformer oil chromatographic analysis test according to claim 6, wherein the gas information acquisition module comprises a gas pressure sensor and an acoustic wave sensor; The gas velocity and gas flow at the gas outlet of the steel bottle used for collecting transformer oil chromatographic analysis test comprise: collecting gas pressure at the gas outlet of a steel bottle used for the transformer oil chromatographic analysis test through the gas pressure sensor, and collecting gas flow rate at the gas outlet of the steel bottle used for the transformer oil chromatographic analysis test through the sound wave sensor; and calculating according to the gas pressure to obtain the gas flow at the gas outlet of the steel bottle used in the transformer oil chromatographic analysis test.
8. The gas valve control device for transformer oil chromatographic analysis test according to claim 7, further comprising a display module; the display module is used for visually displaying the gas flow rate, the gas flow and the gas components at the gas outlet of the steel bottle used for the transformer oil chromatographic analysis test.
9. The gas valve control device for transformer oil chromatographic analysis test according to claim 8, further comprising a communication module; The communication module is used for sending the gas flow rate and the gas flow rate at the gas outlet of the steel bottle used for the transformer oil chromatographic analysis test to the mobile terminal corresponding to the staff, so that the staff can judge whether the valve switch control module controls the electromagnetic valve to be closed according to the gas flow rate and the gas flow rate.
10. The gas valve control device for transformer oil chromatographic analysis test according to claim 9, further comprising an audible and visual alarm; And the audible and visual alarm is used for generating a corresponding audible and visual alarm signal when the electromagnetic valve at the gas outlet of the steel bottle used for the transformer oil chromatographic analysis test is not closed.

Description

Gas valve control device for transformer oil chromatographic analysis test Technical Field The invention relates to the technical field of transformer monitoring, in particular to a gas valve control device for transformer oil chromatographic analysis test. Background At the heart of the work of the oleochemical analysis of electric power systems is the analysis of the decomposition products of transformer oils during long-term operation, which generally comprise hydrocarbon decomposers, i.e.,,AndAnd other non-hydrocarbon gases,,And. The chromatographic analysis method is mainly adopted, namely, the mixed gas is separated and qualitatively analyzed by utilizing the difference of separation coefficients of various chemical decomposition products in chromatographic separation columns. Throughout the analysis, for non-hydrocarbon gases,,AndHigh temperature is generated in the process of combustion conversion analysis, so that inert gas is required to be introduced in the whole process to protect the whole process, and meanwhile, the flow and separation of each gas component in the chromatograph are promoted. In the oil chromatographic analysis test, two operation rules are provided, namely, standard gas is used, the gas is used as a reference standard of chromatographic analysis, the gas steel cylinder is required to be closed in time after being used, the gas components are ensured to be stable within the effective period of one year, and the standard requirements are met, and the inert gas is introduced for 30 minutes after the analysis work of the chromatographic analyzer is finished. Due to the uneven working capacity of the staff and the influence of a plurality of accidental factors, the condition that the staff forgets to close the valve after the analysis work is finished often occurs, and certain property loss and resource waste are caused for the company, but no relevant countermeasures exist in the prior art, and the situation is one of the pain points of the oiling work. Disclosure of Invention The invention provides a gas valve control device for a transformer oil chromatographic analysis test, which can solve the problem that no relevant countermeasures are needed for a worker to forget to close a valve after the analysis work is finished in the prior art. In order to solve the technical problems, the embodiment of the invention provides a gas valve control device for a transformer oil chromatographic analysis test, which comprises a gas component analysis module, a gas information acquisition module, a valve switch control module and an electromagnetic valve; the gas valve control device is arranged at a gas outlet of a steel bottle used for transformer oil chromatographic analysis test; the gas component analysis module is used for analyzing the gas component at the gas outlet of the steel bottle used for the transformer oil chromatographic analysis test and obtaining corresponding gas types according to the gas component, wherein the gas types comprise standard gas and inert gas; The gas information acquisition module is used for acquiring the gas flow rate and the gas flow rate at the gas outlet of a steel bottle used for transformer oil chromatographic analysis test and transmitting the acquired gas flow rate and gas flow rate to the valve switch control module; the valve switch control module is used for comparing the gas flow rate with a preset gas flow rate threshold value, and if the gas flow rate is larger than the gas flow rate threshold value or the gas flow rate is larger than the gas flow rate threshold value, judging that an electromagnetic valve at a gas outlet of a steel bottle used for transformer oil chromatographic analysis test is not closed, controlling the electromagnetic valve to be closed immediately when the gas type is standard gas, and controlling the electromagnetic valve to be closed after a preset time period when the gas type is inert gas. The gas component analysis module comprises a gas path unit, a sample injection unit, a separation unit and a detection unit; The gas path unit is used for drying and purifying gas at the gas outlet of a steel bottle used for transformer oil chromatographic analysis test and then conveying the gas to the sample injection unit; The sample injection unit is used for completely gasifying the entering gas and conveying the completely gasified gas to the separation unit; The separation unit is used for separating each component in the gas so that the separated component gas sequentially enters the detection unit at different times; The detection unit is used for detecting the gas of each component to obtain the gas component of the gas. Preferably, the obtaining the corresponding gas type according to the gas component includes: When the gas component contains hydrogen, at least one hydrocarbon gas and carbon oxide, the gas type in the steel cylinder used for the transformer oil chromatographic analysis test is judged to be standard g