Unlock instant, AI-driven research and patent intelligence for your innovation.

Gas relay calibration stand and calibration method thereof

A verification method and relay technology, which is applied in the direction of circuit breaker testing, circuit, electric switch, etc., can solve the problems of over-period operation and undetectable gas relay, and achieve fast test speed, easy operation, and accurate test data.

Active Publication Date: 2009-06-10
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
View PDF2 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The gas relay flow rate calibration platform of the present invention can meet the calibration and detection of various types of gas relays by adjusting the valve to finely and steplessly detect and control the flow rate of liquid oil fluid, especially to solve the problems of float type or floating ball type gas relays. The problem that the relay runs over cycle and cannot be detected

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gas relay calibration stand and calibration method thereof
  • Gas relay calibration stand and calibration method thereof
  • Gas relay calibration stand and calibration method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] As shown in the figure, the Buchholz relay test bench of the present invention includes a mechanical part, a liquid flow part, a flow detection part and a microcomputer control part. The external dimensions of the mechanical part are: 1800×800×1000 mm (length×width×height).

[0079] The mechanical part includes a work platform 15, a clamping device 1 for fixing the relay and a valve adjusting device 2 for controlling liquid flow. The liquid flow part includes: a pipeline 9, an oil storage tank 4 and a stabilized oil tank 5 connected to the pipeline 9, an oil pump 6 and a regulating valve 7 connected between the oil storage tank 4 and the stabilized oil tank 5, connected to The steady flow conduit 8 and the flow sensor 10 between the valve adjusting device 2 and the stabilized oil tank 5. The flow detection part includes a flow sensor. The microcomputer control part includes a computer 11, an industrial computer 12 connected to the computer 11 and a relay 3, an oil pump star...

Embodiment 2

[0131] Except that the calibrated relay of the flow velocity calibration station is Φ50mm, and the flow velocity range is 1.0-1.5 m / s, the others are the same as in Example 1, and the Buchholz relay flow velocity calibration station is made to calibrate the relay.

Embodiment 3

[0133] Except for the relay that can be calibrated by the flow rate calibration station, which is Φ25mm, the flow rate range is 1.0-1.5 m / s, when the light gas contact action volume value range is 150-250cm 3 When the alarm signal is sent out, the flow velocity value test range of fine stepless adjustment by the stepping motor: except 1-1.5m / s, and the others are the same as in Example 1, the Buchholz relay flow velocity calibration platform is made to verify the relay.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Dimensionsaaaaaaaaaa
Login to View More

Abstract

The present invention provides a gas-actuated relay checking table and a checking method thereof, wherein the gas-actuated relay checking table comprises the following components: a mechanical part, a fluid flow part, a flow capacity detecting part and a microcomputer control part, wherein the mechanical part comprises a clamping device (1), a pressure adjusting device (2) and a working table (15). The fluid flow part comprises an oil box (4), a pressure stabilizing oil box (5), an oil pump (6), a flow sensor (10), an adjusting valve (7), a strainless steel steady flow pipe (8) and a pipeline (9). The flow capacity detecting part comprises a flow capacity sensor. The microcomputer control part comprises a computer (11), an industrial control machine (12), a control interface plate, and an oil pump activating open-phase and over-current protecting circuit (14). The pulse current and voltage signal output by the checking table are input in the microcomputer for controlling oil flow capacity after amplifying and rectifying. Through the superfine and stepless detecting and control of adjusting valve to the flow velocity of fluid such as liquid and oil, the checking detection satisfying various gas-actuated relay can be obtained. Especially a problem that the floater type or floating ball type gas-actuated relay runs supra-periodically and can not detect is settled.

Description

Technical field [0001] The present invention relates to a protection device for a transformer, a reactor, and an on-load tap changer and a method of use thereof, and more specifically, the present invention relates to a test bench for a gas relay and a test method thereof. Background technique [0002] Transformers are electrical equipment used to change the magnitude of AC voltage, and occupy an extremely important position in power systems and power supply systems. At present, oil-immersed transformers are widely used in my country's power system. Protecting the safe operation of transformers has naturally become a key task of the power supply department. Gas protection is one of the effective technical measures to ensure the safe operation of oil-immersed transformers. The main advantages of gas protection are rapid action, high sensitivity, simple installation and wiring, and can reflect various faults inside the fuel tank. [0003] The basic working principle of gas protecti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R31/327H01H35/24
Inventor 倪裕康施震宇
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO