CN201956672U - Overvoltage protection device for alternating current power supply of oil pumping unit - Google Patents
Overvoltage protection device for alternating current power supply of oil pumping unit Download PDFInfo
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- CN201956672U CN201956672U CN2010206992597U CN201020699259U CN201956672U CN 201956672 U CN201956672 U CN 201956672U CN 2010206992597 U CN2010206992597 U CN 2010206992597U CN 201020699259 U CN201020699259 U CN 201020699259U CN 201956672 U CN201956672 U CN 201956672U
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- pumping unit
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Abstract
The utility model relates to an overvoltage protection device for an alternating current power supply of an oil pumping unit, comprising a power input end, wherein the power input end is connected with a power output end through an overvoltage protection and control unit, the power output end is connected with a power input end of the oil pumping unit, when the input voltage is overhigh and exceeds a set value, a voltage threshold value control circuit works to cut off a circuit, so that the overhigh input voltage cannot be transmitted to the oil pumping unit, or when the input current is too large, a self-recovering protection circuit works, so that the overhigh input current cannot be transmitted to the oil pumping unit to damage the oil pumping unit; when the current recovers a normal value, the circuit automatically recovers work, and the power output end is connected with the power input end of the oil pumping unit; a circuit board is also additionally provided with a tip arc discharging circuit, and when voltage to ground of an input/output line exceeds a certain threshold, a tip arc discharging effect is initiated to realize rapid energy release. The overvoltage protection device has the advantages of simplicity and convenience for installing and debugging, low workload for maintaining and wide application range.
Description
Technical field
The utility model belongs to electronic technology field, relates to a kind of oil pumper AC power overvoltage protector.
Background technology
Along with development of producing and development of technology, more and more high to the operational reliability requirement of distribution line, control apparatus and motor, should guarantee the continuity of production process to greatest extent, avoid in all cases harm again equipment and personal safety.The power grid environment that the oil field oil pumping motor is worked unfavorable factors such as overvoltage, under-voltage, phase shortage occur through regular meeting, problem such as often occurs burning out, and influences normal operation, causes damage, so especially need motor protecter.Old protective devices such as fuse, thermal relay, thermal overload release because of the restriction of defective and external condition of itself, can not satisfy the requirement of modern production.
Patent 200820114752 " a kind of overvoltage of power supply under voltage open phase protector " relates to electric control appliance, it is characterized in that: when protecting, not influenced by the circuit load loop current and not influenced by the circuit load loop voltage.Patent 200420086181 " the intelligent motor control protector of multipurpose oil-field oil pumper intermittent recovery " has realized intermittent recovery and anti-intelligent control and electric motor protecting function of finding time with the organic assembling of devices such as thermal relay and microcomputer time switch.But the shortcoming of these protectors is: the circuit more complicated, and the cost height, specific aim is poor, and is poor to the extreme environment adaptive capacity.
Patent 200420057792 " surface-mount type overcurrent overvoltage integrated protector " is a protector of circuit being implemented overcurrent and overvoltage protection.When overcurrent through an electrode stream through positive temperature coefficient resistance material when another electrode, positive temperature coefficient resistance material resistivity sharply increases, and cuts off circuit.When overvoltage was added on the circuit loop, the voltage sensitivity material of insulation was switched on, and the energy that high pressure produces discharges through loop ground connection.Can be simultaneously carry out overcurrent and overvoltage protection and can automatically reply a circuit.But have complex process, debugging difficulty is big, and shortcomings such as inconvenience change are installed.
Summary of the invention:
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model provides a kind of oil pumper AC power overvoltage protector, has the advantage that Installation and Debugging are easy, maintenance workload is little, applied widely.
In order to achieve the above object, the technical scheme taked of the utility model is:
A kind of oil pumper AC power overvoltage protector comprises power input 1, and power input 1 is connected with power output end 6 by overvoltage protection control unit 5, and power output end 6 links to each other with the oil pumper power input.
Described overvoltage protection control unit 5 comprises voltage threshold control circuit 2, from recovery and protection circuit 3 and most advanced and sophisticated arc discharge circuit 4; power input 1 is by connecting with power output end 6 from recovery and protection circuit 3; be parallel with voltage threshold control circuit 2 between power input 1 and the power output end 6, also be parallel with most advanced and sophisticated arc discharge circuit 4 between power input 1 and the power output end 6.
Operation principle of the present utility model is:
Power line and the power input 1 in input well site is connected by socket, and input voltage is when set point is following, and circuit working is normal, any influence can not arranged to the input voltage of circuit.Input at this circuit is middle with output, added voltage threshold control circuit 2 and from recovery and protection circuit 3, when input voltage too high, voltage threshold control circuit 2 work when surpassing set point, cut off circuit, make too high input voltage can not be transferred to oil pumper, avoid damaging oil pumper, perhaps input current is too big, when surpassing set point, from 3 work of recovery and protection circuit, cut off circuit, make too high input current can not be transferred to oil pumper and make its damage; When electric current recovers to end normal value, circuit is resumed work automatically, power supply output 5 links to each other with the oil pumper power input, also added most advanced and sophisticated arc discharge circuit 4 in the circuit board, when the I/O line-to-earth voltage surpasses certain threshold value, to cause most advanced and sophisticated arc discharge effect, the rapid release energy, this mode is faster than pressure-sensitive material reaction speed.
The beneficial effects of the utility model are: Installation and Debugging are easy, maintenance workload is little, applied widely.Most advanced and sophisticated arc discharge effect can the rapid release energy, and this mode is faster than pressure-sensitive material reaction speed.
Description of drawings
Accompanying drawing is a schematic block circuit diagram of the present utility model.
Embodiment
Be elaborated below in conjunction with accompanying drawing with to the utility model.
With reference to accompanying drawing, a kind of oil pumper AC power overvoltage protector comprises power input 1, and power input 1 is connected with power output end 6 by overvoltage protection control unit 5, and power output end 6 links to each other with the oil pumper power input.
Described overvoltage protection control unit 5 comprises voltage threshold control circuit 2, from recovery and protection circuit 3 and most advanced and sophisticated arc discharge circuit 4; power input 1 is by connecting with power output end 6 from recovery and protection circuit 3; be parallel with voltage threshold control circuit 2 between power input 1 and the power output end 6, also be parallel with most advanced and sophisticated arc discharge circuit 4 between power input 1 and the power output end 6.
Operation principle of the present utility model is:
Power line and the power input 1 in input well site is connected by socket, and input voltage is when set point is following, and circuit working is normal, any influence can not arranged to the input voltage of circuit.Input at this circuit is middle with output, added voltage threshold control circuit 2 and from recovery and protection circuit 3, when input voltage too high, voltage threshold control circuit 2 work when surpassing set point, cut off circuit, make too high input voltage can not be transferred to oil pumper, avoid damaging oil pumper, perhaps input current is too big, when surpassing set point, from 3 work of recovery and protection circuit, cut off circuit, make too high input current can not be transferred to oil pumper and make its damage; When electric current recovers normal value, circuit is resumed work automatically, power supply output 5 links to each other with the oil pumper power input, also added most advanced and sophisticated arc discharge circuit 4 in the circuit board, when the I/O line-to-earth voltage surpasses certain threshold value, to cause most advanced and sophisticated arc discharge effect, the rapid release energy, this mode is faster than pressure-sensitive material reaction speed.
Claims (2)
1. an oil pumper AC power overvoltage protector comprises power input (1), it is characterized in that: power input (1) is connected with power output end (6) by overvoltage protection control unit (5), and power output end (6) links to each other with the oil pumper power input.
2. a kind of oil pumper AC power overvoltage protector according to claim 1; it is characterized in that: described overvoltage protection control unit (5) comprises voltage threshold control circuit (2), from recovery and protection circuit (3) and most advanced and sophisticated arc discharge circuit (4); power input (1) is by connecting with power output end (6) from recovery and protection circuit (3); be parallel with voltage threshold control circuit (2) between power input (1) and the power output end (6), also be parallel with most advanced and sophisticated arc discharge circuit (4) between power input (1) and the power output end (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206992597U CN201956672U (en) | 2010-12-31 | 2010-12-31 | Overvoltage protection device for alternating current power supply of oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206992597U CN201956672U (en) | 2010-12-31 | 2010-12-31 | Overvoltage protection device for alternating current power supply of oil pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201956672U true CN201956672U (en) | 2011-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206992597U Expired - Fee Related CN201956672U (en) | 2010-12-31 | 2010-12-31 | Overvoltage protection device for alternating current power supply of oil pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201956672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856320A (en) * | 2015-12-09 | 2017-06-16 | 青岛中石大蓝天石油技术有限公司 | A kind of oil well terminal voltage protection circuit |
-
2010
- 2010-12-31 CN CN2010206992597U patent/CN201956672U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856320A (en) * | 2015-12-09 | 2017-06-16 | 青岛中石大蓝天石油技术有限公司 | A kind of oil well terminal voltage protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20121231 |