The-Functional-Advantage-of-Ang-Yang-Long-Stroke-Pumping-Unit

The Functional Advantage of AYG Long Stroke Pumping Unit

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The power assembly of this machine uses worldwide leading commutation technology, with advanced braking devices. First, the flexible braking system is agile and accurate when the machine is stopped during operation; second, power loss braking is stable and reliable; third, automatic brake system will work when unblocking or out of control of external traction force. At the same time, the stroke limit protection device is installed at top dead center and lower dead center of the guide rail to ensure the safety and reliability of the machine during.

The machine is with direct gravity balance counterweight method, when the sucker rod moves up and down, the balanced weight makes the power source approach balanced driving, which effectively reduces the traction force and effectively reduces the power consumption during the operation of the pumping unit. Compared with the beam pumping unit, it can save more than 50% energy. And the counterweight box contains detachable counterweight blocks, which is convenient for user to adjust the weight of counterweight box according to underground working conditions. And the machine has one-sided suspension performance. Under the condition of weightlessness of external traction, the internal counterweight box can be lifted down without using any external lifting tools.

The electric control cabinet is installed at the bottom and behind of the equipment. The equipment can be controlled/operated both inside and outside of the cabinet. Its variable frequency speed control function can meet the needs of both low and high speed long stroke motion, and has jog operation function.

The professional design of automation control system is stable, safe and reliable. It meets the requirements of convenient operation, reliable performance, stable structure, low repair rate and high working efficiency.

The Technical Principle of Ang Yang Long Stroke Pumping Unit

The Technical Principle of AYG Long Stroke Pumping Unit

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The power transmission device is driven by Special Permanent Magnet Servo Large Torque Motor. Through special design of deceleration and torque increasing mechanism, the roller drives the internal and external traction belt, which wound around the roller, to do reciprocating motion, without intermediate transmission consuming power.

The internal counterweight is matching with downhole gravity and vertical connect by the traction belt directly, and the weight is changeless in work. Large torque output of deceleration and torque increasing mechanism by using small power source, no drive consumption by direct traction of the traction belt on the roller. And the arm gravity point is only one fifth of the same type of beam machine, so it consumes less power by changes little.

An electronically controlled frequency conversion control system specially designed for the transmission structure, which repeated field tests for more than three years by Shanghai Jiao tong National Electrical Appliance Control Research Center. Compare with the multifunctional frequency converter used in the domestic and overseas, it has the advantages of less program units, less energy consumption, reliable and durable energy-saving etc.

The traction belt is relatively wrapped around the rotation center of the roller of the pumping unit. When at TDC and BDC, the tension point of the inner and outer traction belt have force point difference with the center of the roller, and cause power consumption,  while little power consumption in the middle position.

Times of stroke of Smart Long Stroke Pumping Unit can be adjusted. Set a suitable speed when direction transform, according to the up-and-down velocity of Fixed Valve Ball of downhole pump and Plunger Valve Ball, the amount of liquid in the pump will increase markedly, the relative filling volume of the downhole pump will increase, and the pump efficiency will obviously increase. This is a special way to improve pump efficiency and cannot be achieved by conventional beam pumping units and any other pumping units.

The-Advantage-of-Ang-Yang-Long-Stroke-Pumping-Unit

Why Our Customers Choose AYG Long Stroke Pumping Unit?

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In recent years, in the discussion of non-beam pumping units, many manufacturers are striving to develop models / products for oil pumping in order to replace the outdated oil production equipment. At present, there are several kinds of non-beam pumping units put into oilfield market test and application as follows:

(1) No-beam Pumping Unit Driven by Chain Belt：Its electric reducer is at the lower of the body, the active sprocket is on the output shaft of reducer, and the driven sprocket is in the upper end of the body. The reciprocating movement of the counterweight box is driven by the Chain Shaft Joint Slider on chain. The connecting belt or wire rope on the counterweight box bypasses the upper roller and be connected with the rod of the sucker rod, to realize oil production work by making the sucker rod move up and down. The mechanical transmission structure of the machine is too much, and the resistance of the guiding mechanism of the counterweight box is too large. In addition, chain wear clearance must be adjusted and lubricated. Eventually lead to much power waste, high maintenance cost and inconvenience. And this machine does not have the function of arbitrary adjustment of stroke length.

(2) External Rotor Motor and Friction No-beam Pumping Unit：In order to meet the technical requirements of oil production, the external rotor motor is too large and expensive. It is the biggest disadvantage of using external rotor motor power. And it is hard to solve the problems of the high power outer rotor motor cooling, fast demagnetization and short life. The power system is on the frame outside the balance center of the body. When traction is out of control, safety protection measures cannot be implemented.

(3) Tower type Long Stoke Pumping Unit: Transmission structure adopts double-cycle chain drive. Due to the M-shaped main beam is distributed in the middle of the double-cycle chain and connected with the commutation mechanism, the movement of double-cycle chain becoming up-down reciprocating motion of the main suspension rope, which makes chain wearing fast , gap adjustment frequently and maintenance troublesome. And, chains must be lubricated, oil spill often occurs due to excessive storage of lubricating oil. And, this machine does not have the function of arbitrary adjustment of stroke length. Meanwhile, the outside counterweight box has a potential safety hazards, and the unloading operation requires hoisting machinery cooperating.

How Ang Yang Smart Long Stroke Pumping Unit Saves Energy for Customer

How AYG Smart Long Stroke Pumping Unit Saves Energy for Customer?

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The structure principle of Smart Long Stroke Pumping Unit is to reduce the traction power by balancing the counterweight. And its process performance is to increase the filling capacity of pump chamber by long stroke and slow speed, to improve the working efficiency of pumps. Accordingly, the benefits of saving energy and increasing production can be analyzed as follows：

(1) Conventional pumping units currently used in oil fields, such as: The power of the Beam pumping unit is 45KW and the daily power consumption is 600 degrees. So the annual power consumption is 219000 degrees.

(2) The actual power of Smart Long Stroke Pumping Unit, which correspondingwith the type of the Beam pumping unit, is 22 KW. The daily power consumption is 300 degrees and the annual power consumption is 109 500 degrees. Compared with conventional beam pumping units, each unit can save electricity cost every year：219000-109500=109500 degrees.

(3) At present, the downhole pump efficiency of conventional beam pumping units in a low level. Pump efficiency is 50-60% in 800-1500 meters of pump setting depth; pump efficiency is 40-50% in 1500-2500 meters of pump setting depth. But the pump efficiency of Smart Long Stroke Pumping Unit is greatly improved. Pump efficiency is75-85% in 800-1500 meters of pump setting depth; pump efficiency is65-75% in 1500-2500 meters of pump setting depth. The average increase of pump efficiency is more than 25%.

(4) If calculated the pump efficiency is increased by 15%, consider various reasons, conventional beam pumping units can produce 10 tons of crude oil per day with 30 tons of liquid production and 67% of water cut. Smart Long Stroke Pumping Unit can increase the production of crude oil to 12 tons per day with 35 tons of liquid production and 65% of water cut. The production of crude oil is increased by 2 tons per day. If it works 300 days a year, the annual output will increase 600 tons of crude oil.

Accordingly, Smart Long Stroke Pumping Unit can save energy and increase production annually as follows:

Increasing crude oil production by 600 tons + saving electricity by 109500 degrees.