CN201614921U

CN201614921U - Automatic power off device of broken strand of steel cable

Info

Publication number: CN201614921U
Application number: CN2010201070668U
Authority: CN
Inventors: 赵延霞; 周世安; 王海军; 赵延伟; 刘俊海
Original assignee: 王海军
Priority date: 2010-01-30
Filing date: 2010-01-30
Publication date: 2010-10-27
Anticipated expiration: 2020-01-30

Abstract

The utility model relates to an automatic power off device of a broken strand of a steel cable of a beam pumping unit. The technical scheme is as follows: the automatic power off device of the broken strand of the steel cable mainly comprises a transmitting device and a receiving device, wherein the transmitting device is formed by connecting a square battery of 9 volts, a current-limiting resistor, a rectifying diode, a capacitor, a light-emitting diode, a triode, an intermittent transmitting module, a transmitting module and a pair of micro switches together, wherein the intermittent transmitting module is connected with the transmitting module through the triode and the light-emitting diode. The automatic power off device of the broken strand of the steel cable has the benefits that when any end of a beam hanger shifts, the micro switches actuate, and then the digital signals of actuation of the micro switches are transmitted to a receiving module in a receiving circuit through an electronic transmitting circuit, thus cutting off an oil well control circuit, and further stopping the machine automatically; and the automatic power off device of the broken strand of the steel cable is applicable to the protection of hair cables and double-steel-cable lifting mechanisms of beam pumping units when in use.

Description

Steel wire stranded auto-power-off device

One, technical field:

The utility model relates to a kind of petroleum industry auxiliary equipment, the steel wire stranded auto-power-off device in particularly a kind of beam pumping unit.

Two, background technology:

In the oil production equipment in oil field, beam pumping unit has accounted for the overwhelming majority, it is the capital equipment of oil field oil pumping, oil pumper hair plait is the critical piece that bears load in the beam type pumping unit, and the coiling, release, bending, the stretching that go round and begin again on the pumping unit horsehead cambered surface by the hair plait become rod string pumping in pit shaft with the movement in a curve of pumping unit horsehead.

Along with the further exploitation in oil field, some oil well is seen poly-severe, and polymer is taken sand, causes the oil well load to increase; In the heavy oil development unit, when oil well is in latter stage in commentaries on classics week, oil is thick and liquid level is darker, the oil well load is heavier, very easily takes place disconnected strand at the following mao plait of the big load effect of oil well alternation, and disconnected burst of back of mao plait as discovery are untimely, oil pumper remains in operation, cut-off point can cause polished rod stretch bending even disconnection, increase the operation maintenance cost of oil well, if can cause blowout again and then cause environment pollution with next at well head.Because the uncertainty of disconnected strand time of origin of wire rope hair plait and disconnected burst of some position, make the well maintenance personnel can not accomplish the 100% ground discovery disconnected burst phenomenon of hair plait each time, therefore, the hair plait disconnects phenomenon and happens occasionally, cause oil well to stop the increase of well time, rate when having reduced oil recovery, and might make some sand output wells cause the well of lying, increase operating cost.

Three, summary of the invention:

The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, a kind of steel wire stranded auto-power-off device is provided, the displacement situation of external devices is sent to the CPU of programmed in advance, after the CPU judgment processing, sends the order of outage, thereby cut off device power supply (DPS) automatically.

Its technical scheme is: mainly be made up of emitter and receiving system, described emitter is by 9V side's battery, current-limiting resistance, commutation diode, electric capacity, light emitting diode, triode, intermittent transmission module, transmitter module and a pair of microswitch connect to form, and the intermittent transmission module is connected with transmitter module by triode, light emitting diode; Described microswitch is fixed on the wire rope end and withstands on the outer transverse plane of polished rod eye, when the arbitrary end of polished rod eye is subjected to displacement, the microswitch action, transmitter module is sent to the data signal of switch motion in the receiving device, after contactor receives signal, cut off the control loop of connected motor.

Above-mentioned receiving system is by regulator rectifier circuit, receiver module, relay indicating light, triode, cpu chip, compositions such as fly-wheel diode, the 380V AC power connects regulator rectifier circuit, and receiver module is accepted the signal of emitter transmission by telescopic antenna and is amplified, the output of receiver module is connected with CPU by current-limiting resistance, triode, the output of CPU connects relay indicating light and current-limiting resistance respectively, and described current-limiting resistance is connected with fly-wheel diode with contactor by triode.

The beneficial effects of the utility model are: the switch motion when arbitrary end of polished rod eye is subjected to displacement; by the electronics radiating circuit data signal of switch motion is sent to the receiver module of accepting in the circuit; thereby cut off the oil well control circuit; reach the purpose of autostop, this product is applicable to the use protection of beam pumping unit hair sennit in the oil field and two rope hoisting mechanisms.

Four, description of drawings:

Accompanying drawing 1 is the connection layout of oil pumper hair plait and polished rod eye;

Accompanying drawing 2 is circuit connection diagrams of the utility model emitter;

Accompanying drawing 3 is connection layouts of the transformation rectification circuit of the utility model receiving device;

Accompanying drawing 4 is circuit connection diagrams of the utility model receiving device;

Among the last figure: polished rod 1, wire rope 2, polished rod eye 3, current-limiting resistance (R1, R2, R3, R4), commutation diode (D1), electric capacity (C1, C2), light emitting diode (D2), triode (VT1, VT2), intermittent transmission module (NE555), transmitter module (272); Receiver module (262), relay indicating light (LED), triode (VT31, VT32), fly-wheel diode (D31), resistance (R31-R37), contactor (KM).

Five, the specific embodiment:

1-4 in conjunction with the accompanying drawings, the utility model will be further described:

The utility model mainly is made up of emitter and receiving system, wherein, emitter is by 9V side's battery, current-limiting resistance (R1, R2, R3, R4), commutation diode (D1), electric capacity (C1, C2), light emitting diode (D2), triode (VT1, VT2), intermittent transmission module (NE555), transmitter module (272) and a pair of microswitch are formed.Radiating circuit is connected power supply (providing power supply for radiating circuit by 9V side's battery) by the action of outside microswitch, through the resistance current limliting, behind the diode rectification electric capacity is charged, when electric capacity charges to rated voltage, make intermittent transmission module (NE555) 2 pin, 6 human hair combing wastes are given birth to high-low level saltus step (becoming high level by low level), after capacitor discharge is finished, 2 pin, 6 pin transfer low level again to, treat that electric capacity is full of electricity once more after, the high-low level saltus step then takes place again, and then make 9014 triode intermittent conduction, and signal is made transmitter module (272) inner contact conducting by light emitting diode (photoelectric isolating circuit), intermittently send signal.

(2) receiving system is by regulator rectifier circuit (specifically with reference to accompanying drawing 3), receiver module (262), relay indicating light (LED), triode (VT31, VT32), cpu chip, fly-wheel diode (D31), resistance (R31-R37), contactor compositions such as (KM).

Receiving circuit: external 380V AC power is through the internal transformer transformation and through the rectifier bridge rectification, again through 7812,7815 three terminal regulator voltage stabilizings, behind the capacitor filtering, for receiving circuit provide high-quality stable+12V and+the 5V dc source; Receiver module 262 is accepted the signal of radiating circuit by telescopic antenna and is amplified; thereby the signal after the amplification makes the triode conducting make the access human hair combing waste of cpu chip (for the existing conventional technology) give birth to the high-low level saltus step after the resistance current limliting; CPU detects the change (or change of state) that inserts the pin level signal and puts the output of amplification back in order by pre-set program; make corresponding indicator lamp flicker on the one hand; output signal makes the triode conducting after the current-limiting resistance current limliting on the other hand; connect contactor (KM) coil and cause built-in 12V contactor action; constant close contact disconnects; cut off the control loop of motor, thereby reach the purpose of autostop.

During use; polished rod 1 passes polished rod eye 3; polished rod eye is fixing by wire rope 2 (perhaps being the hair plait); and microswitch of the present utility model is fixed on wire rope 2 (perhaps being the hair plait) end and withstands on the outer transverse plane of polished rod eye 3; the switch motion when arbitrary end of polished rod eye 3 is subjected to displacement; transmitter module by emitter is sent to the receiver module of accepting in the circuit with the data signal of switch motion; and deliver to CPU and after the CPU judgment processing, send the order of opening circuit; thereby cut off the oil well control circuit, reach the purpose of autostop.

Claims

1. steel wire stranded auto-power-off device, it is characterized in that: mainly form by emitter and receiving system, described emitter is by 9V side's battery, current-limiting resistance, commutation diode, electric capacity, light emitting diode, triode, intermittent transmission module, transmitter module and a pair of microswitch connect to form, and the intermittent transmission module is connected with transmitter module by triode, light emitting diode; Described microswitch is fixed on the wire rope end and withstands on the outer transverse plane of polished rod eye, when the arbitrary end of polished rod eye is subjected to displacement, the microswitch action, transmitter module is sent to the data signal of switch motion in the receiving device, after contactor receives signal, cut off the control loop of connected motor.

2. steel wire stranded auto-power-off device according to claim 1, it is characterized in that: described receiving system is by regulator rectifier circuit, receiver module (262), relay indicating light (LED), triode (VT31, VT32), cpu chip, fly-wheel diode compositions such as (D31), the 380V AC power connects regulator rectifier circuit, and receiver module (262) is accepted the signal of emitter transmission by telescopic antenna and is amplified, the output of receiver module (262) is by current-limiting resistance (R31), triode (VT31) is connected with CPU, the output of CPU connects relay indicating light (LED) and current-limiting resistance (R32) respectively, and described current-limiting resistance (R32) is connected with fly-wheel diode (D31) with contactor (KM) by triode (VT32).