A pressure control system for simulating insulating oil of substation equipment
A technology of pressure control and substation equipment, which is applied in the direction of electric fluid pressure control, fluid pressure control, control/regulation system, etc., can solve the problems of uncontrollability, unstable oil pressure, influence, etc., and achieves simple operation and responsiveness. Sensitive, accurate and stable effects
Active Publication Date: 2016-08-10
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0004] For the calibration device of the online monitoring device for dissolved gas in oil, currently only a few electric power research institutes and research institutions in China have carried out research on similar scientific and technological projects, and they are not mature, and there are problems of different sizes. Among them, the sealed or semi-sealed Oil tank design, there are oil pressure instability and uncontrollable problems, the oil sample content is easily affected by pressure instability and external atmosphere
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[0021] The present invention will be further described below in conjunction with accompanying drawing and embodiment:
[0022] Depend on Figure 1~6 It can be seen from the shown embodiment that it includes a circulation pump 1, a circulation solenoid valve 2, an oil inlet solenoid valve 4, an oil return solenoid valve 7, an oil cylinder 6 and an oil outlet solenoid valve 8; it is characterized in that it also includes an intake solenoid valve 3 , air outlet solenoid valve 5, pressure sensor 9, compressed air source 16 and pressure controller 17;
[0023] Described oil cylinder 6 top is the oil cavity that has oil inlet 18, and its bottom is the air chamber that is provided with air outlet 13 and air inlet 14; The axial position of the piston rod of oil cylinder 6 is provided with through hole; A pressure sensor 9 is installed at the bottom of the air chamber; the compressed air source 16 communicates with the air inlet 14 through a pipeline equipped with an air inlet electro...
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A pressure control system for simulated transformer device insulating oil, comprising: a circulation pump (1), a circulation magnetic valve (2), an oil inlet magnetic valve (4), an oil return magnetic valve (7), an oil cylinder (6), and an oil outlet magnetic valve (8); the system also comprises a gas inlet magnetic valve (3), a gas outlet magnetic valve (5), a pressure sensor (9), a compressed air source (16), and a pressure controller (17); the upper portion of the oil cylinder (6) is an oil chamber with an oil inlet hole (18), and the lower portion of the oil cylinder (6) is a gas chamber provided with an air outlet (13) and an air inlet (14); a through hole is provided in the axial position of the piston rod of the oil cylinder (6); the pressure sensor (9) is embedded at the bottom of the gas chamber; the compressed air source (16) communicates with the air inlet (14) via a pipe installed with the gas inlet magnetic valve (3); the air outlet (13) communicates with a pipe installed with the gas outlet magnetic valve (5); and the pressure controller (17) communicates, via a Bluetooth or a USB, with a host computer installed with control software. The system measures gas chamber pressure by using the pressure sensor (9) so as to automatically control the opening and closing of each magnetic valve, thus responding quickly and stabilizing the pressure of the oil cylinder.
Description
technical field [0001] The invention relates to a pressure control system for simulating insulating oil of substation equipment, belonging to the field of pressure control. Background technique [0002] At present, for testing indicators such as data accuracy and detection precision of the online monitoring device for dissolved gas in insulating oil, oil samples are usually taken on site and brought back to the laboratory for comparison and analysis using a gas chromatograph. The whole process of calibration takes a long time, the operation process is cumbersome, there are many human errors, and the on-site calibration of the transformer chromatographic online monitoring in operation cannot be performed, and it cannot truly reflect the on-site operating environment of the online device for dissolved gas in insulating oil. Therefore, a design A device specially prepared for insulating oil with a certain characteristic gas content. The characteristic gas and insulating oil are...
Claims
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IPC IPC(8): G05D16/20
CPCG05D16/2053F15B21/041F15B2211/655
Inventor 刘克成范辉马慧芳王娟怡龙潇
Owner STATE GRID CORP OF CHINA