CN202141791U - Contact finger pressure testing device for high-voltage isolating switch - Google Patents
Contact finger pressure testing device for high-voltage isolating switch Download PDFInfo
- Publication number
- CN202141791U CN202141791U CN201120225840U CN201120225840U CN202141791U CN 202141791 U CN202141791 U CN 202141791U CN 201120225840 U CN201120225840 U CN 201120225840U CN 201120225840 U CN201120225840 U CN 201120225840U CN 202141791 U CN202141791 U CN 202141791U
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- China
- Prior art keywords
- hydraulic cylinder
- control valve
- solenoid directional
- isolating switch
- directional control
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Abstract
The utility model discloses a contact finger pressure testing device for high-voltage isolating switch, which comprises a forcipiform testing contact terminal, a hydraulic cylinder, a pressure gauge, a micro hydraulic station, magnetic exchange valves and a position switch; the rear end of the fixed end of the forcipiform testing contact terminal is fixed on the cylinder body of the hydraulic cylinder, the inner side of the rear end of the movable end is fixed on the piston rod of the hydraulic cylinder, when opening angle of the movable end is the maximum, the outer side of the contact terminal end or the rear end of the movable end is pressed on the position switch, two oil chambers of the hydraulic cylinder are connected with the micro hydraulic station via the magnetic exchange valves by a compression oil pipe and a decompression oil pipe respectively; and the pressure gauge is mounted on the compression oil pipe of the hydraulic cylinder. The device is simple in structure, convenient to use, small in volume, light in weight, convenient to carry and high in accuracy. The device can test contact finger gripping force of a high-voltage isolating switch, for solving generation of phenomenon of not enough contact finger gripping force of the high-voltage isolating switch in advance, and avoiding generation of problem of heating contact terminal of the high-voltage isolating switch caused by not enough contact finger gripping force of the isolating switch.
Description
Technical field
The utility model relates to a kind of parameter test device of high voltage isolator.
Background technology
At present, the high voltage isolation switch contact heating problem can cause the fusing of contact heating position, increases frequency of power cut, influences the operation of power networks structure.Analysis, statistics through to existing high voltage isolator heating problem are found; Disconnector is shaken hands to generate heat and is accounted for more than 80% of whole heating problems; And disconnector fingertip grip force deficiency account for disconnector shake hands the heating more than 60% of defective; Therefore, the key of minimizing high voltage isolator heating is the grip force that guarantees the disconnector fingertip.But also do not have at present can testing high voltage disconnector fingertip grip force device, detect disconnector fingertip grip force and lack technological means.
The utility model content
The purpose of the utility model is exactly to solve the problems referred to above that exist in the prior art; A kind of high-voltage isolating switch sensing finger pressure proving installation is provided; Adopt this device can testing high voltage disconnector fingertip grip force; So that find the deficiency of high voltage isolator fingertip grip force in advance, avoid generation because of the not enough high voltage isolation switch contact heating problem that causes of disconnector fingertip grip force.
For realizing above-mentioned purpose, the technical solution of the utility model is: a kind of high-voltage isolating switch sensing finger pressure proving installation, and it comprises tong-like test contact, hydraulic cylinder, tensimeter, micro hydraulic station, solenoid directional control valve and travel switch; The stiff end rear end of tong-like test contact is fixed on the hydraulic cylinder body; The movable end rear inside is fixed on the piston rod of hydraulic cylinder; When the movable end opening angle is maximum; The outside, movable end rear end withstands on the travel switch, and two oil pockets of hydraulic cylinder are connected on the micro hydraulic station through solenoid directional control valve by pressurization oil pipe and pressure release oil pipe respectively; On the pressurization oil pipe of hydraulic cylinder tensimeter is installed.
Above-mentioned described micro hydraulic station comprises direct supply, direct current generator, starting relay, hydraulic pump, fuel tank, pressure regulator valve and controller; Direct supply is a storage battery, and the positive and negative electrode of storage battery is connected the power input of controller after through K switch, also is connected with the normally opened contact J1-1 of the starting relay of series connection and the power supply of motor; Be connected the negative pole of storage battery behind the coil J of the control output end of controller through starting relay; The signal output part of travel switch is connected the signal input part of controller; Pressurization, the decompression of solenoid directional control valve are arranged, the startup of motor and stop button on the controller; Two solenoid directional control valve control ends of controller are connected to two signal input parts of solenoid directional control valve; The pressurization mouth of solenoid directional control valve is connected the oil outlet end of hydraulic pump by the pressurization oil pipe, and the pressure relief opening of solenoid directional control valve connects fuel tank by the pressure release oil pipe, and the oil outlet end of hydraulic pump also directly connects fuel tank through pressure regulator valve.
Above-mentioned described direct supply also can be provided by the mains ac power supply, forms described direct supply after the filtering of rectification and the filtering circuit of mains ac power supply through transformer step-down, rectification circuit.
Because the utility model adopted such scheme, the contact end of tong-like test contact is placed between the fingertip of high voltage isolator, connect K switch, point is the motor start-up button down, and hydraulic pump starts, and point is boost button down, and hydraulic cylinder begins pressurization; The movable end of tong-like test contact moves under the promotion of piston rod, when it moves to the position of contacting travel switch, and the travel switch action, controller is according to the instruction of travel switch, and with the hydraulic system sealing, the outage of hydraulic pump motor is out of service; Tensimeter shows pressure simultaneously, and this pressure is the fingertip grip force of disconnector just.The utility model is simple in structure, easy to use, and volume is little, in light weight, easy to carry, and accuracy is high.It can testing high voltage disconnector fingertip grip force, so that solve hold with a firm grip the generation of hypodynamic phenomenon of high voltage isolator fingertip in advance, avoids the generation because of the not enough high voltage isolation switch contact heating problem that causes of disconnector fingertip grip force.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
As shown in Figure 1, present embodiment comprises tong-like test contact 1, hydraulic cylinder 3, tensimeter 4, micro hydraulic station, solenoid directional control valve 5 and travel switch 2.The stiff end rear end of tong-like test contact 1 is fixed on hydraulic cylinder 3 cylinder bodies, and the movable end rear inside is fixed on the piston rod of hydraulic cylinder 3, and when the movable end opening angle was maximum, the outside, movable end rear end withstood on the travel switch 2.Two oil pockets of hydraulic cylinder 3 are connected the pressurization oil-out and the pressure release oil-in of solenoid directional control valve 5 respectively by pressurization oil pipe and pressure release oil pipe, the pressurization oil-in of solenoid directional control valve 5, pressure release oil-out and power supply are connected on the micro hydraulic station; On the pressurization oil pipe of hydraulic cylinder 3 tensimeter 4 is installed.The signal output part of travel switch 2 is connected on the micro hydraulic station.
Described micro hydraulic station comprises storage battery 10, direct current generator 8, starting relay, hydraulic pump 7, fuel tank 9, pressure regulator valve 6 and controller.The positive and negative electrode of storage battery 10 is connected the power input of controller after through K switch, also is connected with the normally opened contact J1-1 of the starting relay of series connection and the power supply of motor 8.Be connected the negative pole of storage battery 10 behind the coil J of the control output end of controller through starting relay.The signal output part of travel switch 2 is connected the signal input part of controller.Pressurizing button K1, decompression button K2 that solenoid directional control valve is arranged on the controller, the start button K3 of motor and stop button K4.Two solenoid directional control valve control ends of controller are connected to two signal input parts of solenoid directional control valve 5.The pressurization mouth of solenoid directional control valve 5 is connected the oil outlet end of hydraulic pump 7 by the pressurization oil pipe, and the pressure relief opening of solenoid directional control valve 5 connects fuel tank 9 by the pressure release oil pipe.The oil outlet end of hydraulic pump 7 also directly connects fuel tank 9 through pressure regulator valve 6.
Claims (3)
1. high-voltage isolating switch sensing finger pressure proving installation, it is characterized in that: it comprises tong-like test contact, hydraulic cylinder, tensimeter, micro hydraulic station, solenoid directional control valve and travel switch; The stiff end rear end of tong-like test contact is fixed on the hydraulic cylinder body; The movable end rear inside is fixed on the piston rod of hydraulic cylinder; When the movable end opening angle is maximum; The movable end contact end or the outside, rear end withstand on the travel switch, and two oil pockets of hydraulic cylinder are connected on the micro hydraulic station through solenoid directional control valve by pressurization oil pipe and pressure release oil pipe respectively; On the pressurization oil pipe of hydraulic cylinder tensimeter is installed.
2. high-voltage isolating switch sensing finger pressure proving installation according to claim 1 is characterized in that: described micro hydraulic station comprises direct supply, direct current generator, starting relay, hydraulic pump, fuel tank, pressure regulator valve and controller; Direct supply is a storage battery, and the positive and negative electrode of storage battery is connected the power input of controller after through K switch, also is connected with the normally opened contact J1-1 of the starting relay of series connection and the power supply of motor; Be connected the negative pole of storage battery behind the coil J of the control output end of controller through starting relay; The signal output part of travel switch is connected the signal input part of controller; Pressurization, the decompression of solenoid directional control valve are arranged, the startup of motor and stop button on the controller; Two solenoid directional control valve control ends of controller are connected to two signal input parts of solenoid directional control valve; The pressurization mouth of solenoid directional control valve is connected the oil outlet end of hydraulic pump by the pressurization oil pipe, and the pressure relief opening of solenoid directional control valve connects fuel tank by the pressure release oil pipe, and the oil outlet end of hydraulic pump also directly connects fuel tank through pressure regulator valve.
3. high-voltage isolating switch sensing finger pressure proving installation according to claim 2; It is characterized in that: described direct supply is provided by the mains ac power supply, forms described direct supply after the filtering of rectification and the filtering circuit of mains ac power supply through transformer step-down, rectification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120225840U CN202141791U (en) | 2011-06-30 | 2011-06-30 | Contact finger pressure testing device for high-voltage isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120225840U CN202141791U (en) | 2011-06-30 | 2011-06-30 | Contact finger pressure testing device for high-voltage isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141791U true CN202141791U (en) | 2012-02-08 |
Family
ID=45552846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120225840U Expired - Lifetime CN202141791U (en) | 2011-06-30 | 2011-06-30 | Contact finger pressure testing device for high-voltage isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141791U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253336A (en) * | 2011-06-30 | 2011-11-23 | 保定供电公司 | Device for testing pressure of contact finger of high-voltage isolating switch |
| CN104390768A (en) * | 2014-11-02 | 2015-03-04 | 国家电网公司 | Test tool for contact finger spring pressure in knife switch moving contact |
-
2011
- 2011-06-30 CN CN201120225840U patent/CN202141791U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253336A (en) * | 2011-06-30 | 2011-11-23 | 保定供电公司 | Device for testing pressure of contact finger of high-voltage isolating switch |
| CN104390768A (en) * | 2014-11-02 | 2015-03-04 | 国家电网公司 | Test tool for contact finger spring pressure in knife switch moving contact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120208 Effective date of abandoning: 20130904 |
|
| RGAV | Abandon patent right to avoid regrant |