CN2932775Y - Oil field oil extractor electricity-saving control cabinet - Google Patents

Abstract

A power-saving control cabinet of oil field pumping unit, comprising a cabinet body, wherein the cabinet body is provided with a cabinet door having a safe-guard door lock, the cabinet body is provided with a single-chip and a power supply main return circuit. The utility model is characterized in that the cabinet body also comprises a control return circuit containing relays 1CJ to 4CJ, the main return circuit is also serially connected with an electromagnetic balancing step-down transformer, wherein an external power supply is connected with an electric motor through a circuit breaker, the electromagnetic balancing step-down transformer, the relay CJ and a current mutual-inductor, a current sampling circuit and a voltage sampling circuit of the main return circuit is connected with a CPU through the input port of the single-chip, the CPU is connected with the main return circuit through the output port of the single-chip and the relays 1CJ to 4CJ, and the CPU is also connected with the main return circuit through the output port of the single-chip, the relay JC and a capacitor. The utility model not only can control the intermittent operation of the electric motor of the pumping unit by the single-chip, but also has the advantages that the electric motor can step-down and start, the pumping unit can pre-alarm before automatically started and stop movement in low temperature, and the door lock of the control cabinet is not easily to be blocked.

Description

Oil-field oil pumper economize on electricity control cubicle

Technical field

The utility model relates to the economize on electricity control cubicle that a kind of oil field oil recovery machiner uses, and particularly relates to a kind of oil-field oil pumper intelligent energy-saving control cubicle that makes the work of motor of pumping unit in intermittent formula, belongs to the electric supply installation of oil field oil recovery machiner.

Background technology

Owing to the specific load characteristics of oil-field oil pumper, determined when selecting motor of oil extractor, inevitably to exist the phenomenon of low load with strong power.Save electric energy in order to reduce cost for oil production, the at present domestic power-saving technique that oil-field oil pumper is adopted has: adopt reactive power compensator 1.; 2. adopt the bidirectional triode thyristor battery saving arrangement; 3. adopt the bidirectional triode thyristor battery saving arrangement of filter; 4.Y/A conversion battery saving arrangement.The weak point that above-mentioned prior art exists is: 1. the function singleness of reactive power compensator and Y/A conversion battery saving arrangement, and effect is general, can not reach Based Intelligent Control; 2. the bidirectional triode thyristor battery saving arrangement can produce harmful harmonic wave, and because bidirectional triode thyristor itself consumes certain electric energy, so power savings is not remarkable; 3. adopt the bidirectional triode thyristor battery saving arrangement of filter, though the harmful harmonic filtration that produces can be absorbed, because bidirectional triode thyristor itself consumes certain electric energy, its power savings is also not too remarkable; 4. the door and the lock of the economize on electricity cabinet that present oil-field oil pumper is adopted do not adopt antitheft pattern, are easily pried open.China's utility model patent has provided a kind of " totally-enclosed distance type oil pumping machine control cabinet " for CN200420038723.2 number; comprise cabinet; underframe; control device and transformer four parts; it is characterized in that being separated into hyperbaric chamber and low-pressure chamber by vertical clapboard in the cabinet; the left side in hyperbaric chamber; right both sides are sealed with steel mesh; the top is a color-steel composite board and bolt draw bail alive; the left side of low pressure; right both sides are sealed with steel plate; the top is the color-steel composite board fixed connection structure; high; respectively there are an antitheft door and lock in the front of low-pressure chamber; the cabinet top left; right both sides are sealed with steel plate; underframe is a sledge shape structure; by upper beam; central sill; underbeam and column are formed; be welded into a whole with steel pipe or shaped steel; the base plate of cabinet is fixed on the upper beam of underframe; transformer is installed on the base plate in cabinet hyperbaric chamber; the electrical appliance part of control device is installed on the vertical clapboard of low-pressure chamber; building-out capacitor group and base thereof are installed on the base plate of low-pressure chamber; control device comprises total isolating switch (QS); electric capacity imaginary power automatic compensation (the QF of system; RD; TC; ZKQ; KA1～KAn; C1～Cn); control protection system and remote handling system (QS1～QSn along separate routes; KM1～KMn; BHQ1～BHQn and YKQ1～YKQn), transformer (TM) is selected for use and is subtracted appearance type transformer or still use the transformer of oil field in usefulness.China's utility model patent has also provided a kind of " having anti-electricity-theft and oil pumper intelligence controlling device power saving function " for CN02291272.X number, controllable silicon technology and single-chip microcomputer Based Intelligent Control have been adopted, comprise: signal deteching circuit is used to detect the load state of oil pumper; Intelligent control unit, the variation of the pump load situation that detects according to signal deteching circuit, control powers up and cuts off the power supply oil pumper.Though what above technical scheme provided can reduce wearing and tearing and energy consumption that the idle running of oil pumper causes effectively, take out the advantage of function between having, but can't accomplish the motor reduced voltage starting, the door lock of control cubicle is easily blocked, can not fully satisfy the specification requirement of applying unit.

The utility model content

The purpose of this utility model is to overcome the prior art above shortcomings, provide a kind of novel oil-field oil pumper economize on electricity control cubicle, the utility model be except that making oil-field oil pumper take out the function between having, and has also that motor reduced voltage starting, the automatic prestart of oil pumper are reported to the police in advance, low temperature is taken out between stopping and the door lock of control cubicle is difficult for the characteristics of function such as blocked.

The technical scheme that the utility model provides is: this oil-field oil pumper economize on electricity control cubicle, include cabinet, one sidewall of cabinet is provided with the cabinet door of band door lock, be provided with the singlechip CPU that software is housed in the cabinet and include external power supply, circuit breaker DZ, relay CJ, current transformer CT, the main circuit power supply of motor D, be characterized in also being provided with in the cabinet control loop that includes relay 1CJ～4CJ, also be serially connected with two cover electromagnetic balance reducing transformer CP in the described main circuit power supply, wherein external power supply is through circuit breaker DZ, electromagnetic balance reducing transformer CP, relay CJ, current transformer CT is connected with motor D, current sampling circuit in the main circuit power supply is connected with central processor CPU by input of single chip with voltage sample circuit, central processor CPU is connected with main circuit power supply with relay 1CJ～4CJ in the control loop by single machine output end, central processor CPU also passes through single machine output end, relay J C, capacitor C is connected with main circuit power supply, also be serially connected with fuse FU in the described control loop, the door lock of described cabinet door is the safe-guard door lock of 3 locking types.

For better realizing the purpose of this utility model, prevent from artificially to stop up the key hole of safe-guard door lock, the key hole of described safe-guard door lock is open through hole, even key hole is stopped up by foreign material, as long as key is inserted in the key hole, foreign material will be ejected by the another side of key from door.

Operation principle of the present utility model is: adopt the CT current sampling and the voltage sampling of real-time online, and then will detect power factor and the load factor real-time online data of oil-field oil pumper under the different loads operating condition and be input in the single-chip microcomputer.In major loop, seal in two cover electromagnetic balance reducing transformer CP, when starting, suit electromagnetic balance reducing transformer CP by the starting needs according to preset program central processor CPU automatic control relay 1CJ-4CJ, make motor D reduced voltage starting, quicken control according to oil pumper operating mode characteristics and finish motor D starting process.The overall process that central processor CPU judges that it need be controlled is detected and be input in motor D starting back by detecting current transformer CT to the motor running current.

Central processor CPU is according to the oil pumper operating condition, suitably adjust demand that terminal voltage of motor and electric current make the magnetic field energy of generation and load torque, accurately cooperate, making time and the quantity of control electromagnetic balance reducing transformer CP: CP greater than 75% time does not drop into when the negative piemarker rate of oil pumper, 75% to 60% drops into a CP, 65% to 30% drops into two CP, when the too low oil pumping quantity not sufficient of the oil level of oil-field oil pumper, detecting the back by CPU is stopped automatically by the CPU operating motor, the automatic starting operation of CPU control oil pumper is taken out function when treating the pasta rising between enforcement.Sent powerful alarm sound in 1 minute at the automatic prestart of oil pumper.When outdoor temperature is lower than 5 ℃, take out function stop.

In the technique scheme that the utility model provides, the software program of described single-chip microcomputer prepackage can directly be bought from the market for existing mature technology, also can be designed voluntarily by this field those of ordinary skill.

Compared with prior art, the beneficial effects of the utility model are:

1. export complete sine wave, do not produce any harmonic pollution;

2. motor is realized soft start in starting process, not only electrical network is impacted water, and little to oil-field oil pumper tool equipment impulsive force, prolongs the useful life of equipment;

3. motor of oil extractor is realized that reactive power compensation on the spot effectively improves power factor;

4. adopt the single-chip microcomputer real-time tracking to detect, realize closed loop management according to oil pumper actual condition and the negative piemarker voltage-tracing that automatically adjusts;

5. the cabinet door adopts 3 locking types and the antifouling stifled safe-guard door lock of energy of pick-proof and anti-theft.

Description of drawings

Fig. 1 provides the structural representation of embodiment for the utility model; Fig. 2 is the A-A cutaway view of Fig. 1; Fig. 3 is the left view of Fig. 1; Fig. 4 is that the A of Fig. 2 is to view; Fig. 5 provides the electrical principle schematic diagram of embodiment for the utility model.

Embodiment

As shown in Figure 1, this oil-field oil pumper economize on electricity control cubicle, include cabinet 1, the dividing plate in the cabinet 1 is provided with single-chip microcomputer 5 and the electric component circuit breaker 6 in main circuit power supply and the control loop, relay 7, current transformer 8, electromagnetic balance reducing transformer 9 and the motor that software is housed; As Fig. 2～shown in Figure 4, one sidewall of cabinet 1 is provided with the cabinet door 2 of band safe-guard door lock 3, this safe-guard door lock 3 is upper and lower 3 locking type pick-proof door locks that locking point 4 is all arranged, for preventing to stop up the key hole 11 of safe-guard door lock 3, the key hole 11 of safe-guard door lock 3 is open through hole, even key hole 11 is stopped up by foreign material, as long as key 10 is inserted in the key holes 11, foreign material will be ejected by the another side of key 10 from door.

As shown in Figure 5, in main circuit power supply of the present utility model, be serially connected with two cover electromagnetic balance reducing transformer CP, wherein external power supply is through circuit breaker DZ, electromagnetic balance reducing transformer CP, relay CJ, current transformer CT is connected with motor D, current sampling circuit in the main circuit power supply is connected with central processor CPU by input of single chip with voltage sample circuit, central processor CPU is connected with main circuit power supply with relay 1CJ～4CJ in the control loop by single machine output end, central processor CPU also passes through single machine output end, relay J C, capacitor C is connected with main circuit power supply, also is serially connected with fuse FU in the described control loop.

During work, external three phase mains is delivered to motor through DZ, CP, CJ, CT, by CPU, CP is put into operation when motor starting, carries out reduced voltage starting, relay 1CJ, 3CJ closure, and 2CJ, 4CJ open.For preventing that during starts motor is climbed the speed operation, the starting later stage is controlled CP by CPU, terminal voltage of motor is promoted finish starting.After starting is finished, detect by CPU control, and assign instruction by CPU, make relay 1CJ, 2CJ, 3CJ, 4CJ carry out branch, close a floodgate and adjust, reach real-time online control by the motor actual operating mode according to load condition.If the oil well oil mass is very few, then CPU assigns instruction and stops oil pumping, treats behind the certain hour that starting is taken out between carrying out voluntarily.If outdoor weather is cold excessively, then CPU assigns instruction and takes out between stopping, and recovers normally oil pumping.Be to guarantee near the oil pumper personnel and the safety of livestock, when taking out between oil pumper when restarting, CPU can assign instruction to warning circuit, sends in advance to surpass 120 decibels powerful alarm sound, to guarantee to accomplish safety in production.

Claims (3)

1. oil-field oil pumper economize on electricity control cubicle, include cabinet, one sidewall of cabinet is provided with the cabinet door of band door lock, be provided with the single-chip microcomputer that software is housed in the cabinet and include external power supply, circuit breaker DZ, relay CJ, current transformer CT, the main circuit power supply of motor D, it is characterized in that also being provided with in the cabinet control loop that includes relay 1CJ～4CJ, be serially connected with two cover electromagnetic balance reducing transformer CP in the described main circuit power supply, wherein external power supply is through circuit breaker DZ, electromagnetic balance reducing transformer CP, relay CJ, current transformer CT is connected with motor D, current sampling circuit in the main circuit power supply is connected with central processor CPU by input of single chip with voltage sample circuit, central processor CPU passes through single machine output end, relay 1CJ～4CJ in the control loop is connected with main circuit power supply, central processor CPU also passes through single machine output end, relay J C, capacitor C is connected with main circuit power supply, and the door lock of described cabinet door is the safe-guard door lock of 3 locking types.

2. oil-field oil pumper economize on electricity control cubicle according to claim 1 also is serially connected with fuse FU in the described control loop.

3. oil-field oil pumper economize on electricity control cubicle according to claim 1 and 2, the key hole that it is characterized in that described safe-guard door lock is open through hole.

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