CN212572095U - Energy-saving device of beam-pumping unit - Google Patents
Energy-saving device of beam-pumping unit Download PDFInfo
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- CN212572095U CN212572095U CN202021567898.8U CN202021567898U CN212572095U CN 212572095 U CN212572095 U CN 212572095U CN 202021567898 U CN202021567898 U CN 202021567898U CN 212572095 U CN212572095 U CN 212572095U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The utility model discloses an energy-saving device of a beam-pumping unit, which comprises a distribution control box fixed on a base, a manual brake device, a motor, a speed reducer and a pumping unit, wherein the distribution control box is internally provided with a motor power conversion controller and a power connector; the upper position sensor and the lower position sensor are used for sensing the position of the output shaft of the speed reducer; the motor, the motor/generator unit, the battery pack and the power connector are respectively connected with the motor power conversion controller through power cables. The motor/generator unit enables the motor and the generator to be coaxial, and enables the generator and the motor to be integrated by utilizing reversibility of the motor and the generator. The utility model discloses simple structure, convenient to use can effectively utilize the surplus kinetic energy of oil pumping in-process low-power consumption or braking process, improves motor operating efficiency, reduces the energy consumption.
Description
Technical Field
The utility model belongs to the technical field of the oil is equipped, specificly relate to an economizer of beam-pumping unit.
Background
The beam-pumping unit, which is the earliest and most widely used pumping unit in the world, is continuously used until now due to the characteristics of simple structure, easy operation and strong adaptability to various environments. Although the beam-pumping unit has the advantages, the beam-pumping unit also has considerable defects, wherein high energy consumption is the fatal defect of the beam-pumping unit, the most remarkable is power consumption, the power consumption of the beam-pumping unit is equivalent to twenty percent of the total energy consumption of the whole oil enterprise, which undoubtedly causes huge pressure on the economic operation cost of the oil enterprise, so that the whole oil exploitation energy cost rises to a new height, and the beam-pumping unit is used as the most important and most core mechanical equipment for oil exploitation, how to achieve energy conservation and consumption reduction is the problem to be solved by the beam-pumping unit urgently, and is the problem which always troubles the oil exploitation enterprise.
The current pumping unit structure: including fixing the distribution control box in base one side, the hand brake device, the motor, the speed reducer, the beam-pumping unit is constituteed, and the motor passes through the external electric wire netting of distribution control box, and distribution control box control motor starts, and the associated speed reducer drives beam-pumping unit reciprocating motion, has a power failure through the distribution control box when needing to shut down, and the hand brake device control motor brakes. The reason for large energy consumption of the beam pumping unit is mainly as follows:
1. low motor load, low efficiency operation: because the starting load is larger, in order to ensure the starting requirement of the oil pumping unit and enough overload capacity during operation, the installed power of the motor is generally larger, and the motor is in light-load operation during normal operation, so that the load rate of the oil pumping unit is low, the oil pumping unit is not matched with the motor, the production condition of a 'big horse-drawn trolley' is formed, and the power loss of a circuit, a transformer and the motor is increased; the operation efficiency of the motor depends on the load factor, the efficiency of the motor is very low under light load, when the load is increased to a certain value, the change is very small, and experiments prove that: when the load factor is less than 0.4, the change of the efficiency is not large, and when the load factor is more than 0.7, the efficiency is highest. When the load of the motor is low, the motor still needs to draw larger reactive power from the power grid, so that the power factor is reduced, which is the main reason for the low power factor of the motor at present.
2. The balance rate is low: the balance rate of the oil pumping unit used on site is low, the serious unbalance causes the waste of electric power, the current change of most motors is uneven, the internal consumption of the motors is greatly increased, and the efficiency of the whole oil pumping system is influenced.
3. The power generation phenomenon exists: the existing electricity-saving measures are mainly aimed at the situation of electric energy waste caused by low efficiency and low power factor under the condition of low load rate of a motor, and another important reason that the pumping unit wastes electric energy is that the pumping unit drags the motor to generate electricity. Because the load fluctuation of the pumping unit is large, the condition that the running speed of the input shaft of the speed reducer of the pumping unit is higher than the driving speed of the motor for the input shaft of the speed reducer of the pumping unit in the normal running of the pumping unit can occur, at the moment, the pumping unit drags the motor to generate electricity, the generated electricity can not be completely synchronous with a power grid, line loss exists, and the electricity generated by the motor can not be completely utilized by the power grid. In the whole conversion process of electric energy-mechanical energy-electric energy, a large part of energy can be wasted, and the energy consumption is high.
4. Energy consumption of the brake device: when the pumping unit stops, the pumping unit can continue to rotate or swing back and forth due to the inertia of the beam balance block, a braking system is needed to brake the pumping unit, and a large amount of energy is consumed in the braking process.
In view of the technical defect of large energy consumption of the existing beam-pumping unit, an energy-saving device of the beam-pumping unit is needed, which has a simple structure and is convenient to use, can effectively utilize the residual kinetic energy of low power consumption or braking process in the oil pumping process, improves the running efficiency of a motor and reduces the energy consumption.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, convenient to use can effectively utilize the surplus kinetic energy of oil pumping in-process low-power consumption or braking process, improves motor operating efficiency, reduces the economizer of beam-pumping unit of energy consumption.
In order to solve the problems, the utility model provides an energy-saving device of a beam-pumping unit, which comprises a distribution control box fixed on a base, a manual brake device, a motor, a speed reducer and a pumping unit, wherein the distribution control box is internally provided with a motor power conversion controller and a power connector; an upper position sensor is arranged above the output shaft of the speed reducer, and a lower position sensor is arranged below the output shaft of the speed reducer; the upper position sensor and the lower position sensor are used for sensing the position of the output shaft of the speed reducer; the upper position sensor and the lower position sensor are respectively connected with the motor power conversion controller through signal cables.
The motor, the motor/generator set, the battery pack and the power connector are respectively connected with the motor power conversion controller through power cables.
The motor/generator unit enables the motor and the generator to be coaxial, and enables the generator and the motor to be integrated by utilizing reversibility of the motor and the generator.
The motor/generator unit includes two operating states:
in the starting process and the oil pumping process: when the electric pumping unit works in the electric state, additional power is provided for the pumping unit through the speed reducer, and when the electric pumping unit works in the electric state, electric power is supplied by the battery pack;
in the process of stopping and braking and the oil absorption process: when the power generating device works in a power generating state, inertial power of the oil pumping unit and the speed reducer is converted into electric energy, and the electric energy is stored in the battery pack.
The motor power conversion controller is used for judging whether the oil pumping machine works in an oil pumping process or an oil absorption process according to signals of the upper position sensor and the lower position sensor, and is used for managing the charging and discharging process of the battery pack; when the electric quantity of the battery pack is insufficient, the electric energy is supplemented for the battery pack through the power connector.
An electric motor: the external power supply provides electric energy to provide conventional power for the pumping unit.
When the pumping unit is started, the motor and the motor/generator unit work simultaneously, the pumping unit is started by utilizing the maximum torque, and the motor/generator unit is powered by electric energy stored in the battery pack, so that the starting current of the motor can be reduced, and the impact on a power grid is reduced.
When the pumping unit normally operates, two processes are provided, one is an oil pumping process, and the other is an oil absorbing process.
In the oil pumping process, because the load of the oil pumping motor is increased, the motor/generator unit works in a motor state, and the battery pack provides energy to provide power for the motor and reduce the load of the motor.
In the oil absorption process, the motor load of the oil pumping unit is reduced, the motor/generator set is converted into a generator state, the motor load of the oil pumping unit is increased, and redundant energy is converted into electric energy which is stored in the battery pack.
When the pumping unit stops and brakes. The motor stops working, the motor/generator unit works in a power generation state, the torque increased by the generator improves the braking effect, and redundant mechanical energy is converted into electric energy to be stored in the battery pack, so that the energy-saving effect is achieved.
Further: the battery pack is a storage battery. The preferred models are: ternary lithium battery
Further: the motor/generator unit is characterized in that the motor and the generator are coaxial, the generator and the motor are integrated by utilizing reversibility of the motor and the generator, and the structure is particularly suitable for the field and exists for effectively adjusting load fluctuation of a power grid. The types of motor/generator units are: a permanent magnet synchronous motor.
Further: the motor power conversion controller is a high-power IGBT frequency conversion controller
Further: the upper position sensor and the lower position sensor are Hall position sensors.
The utility model has the advantages that:
1. the utility model relates to an economizer of beam-pumping unit utilizes the surplus kinetic energy of oil pumping in-process low-power consumption or braking process to generate electricity, with electric energy storage in the group battery, at the beam-pumping unit start-up formula, perhaps when transshipping, utilizes the electric energy drive auxiliary motor of group battery, for the beam-pumping unit provides the helping hand, reaches the purpose of energy saving.
2. The utility model discloses can solve the big horse of beam-pumping unit and draw the power consumption problem of dolly. The problems of low motor power factor and large load change of the beam pumping unit can be solved, and the running efficiency of the motor is improved.
3. The utility model discloses can become level and smooth with the power output of former beam-pumping unit engine, reduce and strike the electric wire netting, improve the transmission efficiency of electric wire netting.
4. The utility model discloses there are multiple combination mode and method, can establish motor/generator unit as a generator and a motor alone. The group battery can be placed with the block terminal in, also can set up and bury the ground case, can prevent that the temperature is crossed excessively or is too high winter and summer season, the efficiency of guarantee group battery.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the electric energy driving auxiliary motor of the battery pack is utilized in the oil pumping process of the utility model, and a schematic diagram of assistance is provided for the oil pumping unit.
Fig. 3 is the schematic diagram of the utility model discloses in the oil absorption process, the motor/generator unit changes into the generator state, turns into the electric energy with unnecessary energy.
The attached drawings are as follows:
1. distribution control box 2, manual brake device 3, motor
4. Motor/generator unit 5, speed reducer 6, lower position sensor
7. Upper position sensor 8, oil pumping unit 9 and motor power conversion controller
10. Battery pack 11, power connector 12 and base
13. Leather belt
The specific implementation mode is as follows:
as shown in fig. 1-3, fig. 1 is a schematic structural diagram of the present invention. Fig. 2 is the electric energy driving auxiliary motor of the battery pack is utilized in the oil pumping process of the utility model, and a schematic diagram of assistance is provided for the oil pumping unit. Fig. 3 is the schematic diagram of the utility model discloses in the oil absorption process, the motor/generator unit changes into the generator state, turns into the electric energy with unnecessary energy. The utility model discloses an economizer of beam-pumping unit, including fixing the distribution control box 1 on base 12, hand brake device 2, motor 3, speed reducer 5 and beam-pumping unit 8, the distribution control box 1 is equipped with motor power conversion controller 9 and power connector 11, wherein, motor 3, be provided with motor/generator unit 4 between the speed reducer 5, motor 3, motor/generator unit 4, speed reducer 5 links together through driving belt 13; an upper position sensor 7 is arranged above an output shaft of the speed reducer 5, and a lower position sensor 6 is arranged below the output shaft of the speed reducer 5; the upper position sensor 7 and the lower position sensor 6 are used for sensing the position of an output shaft of the speed reducer; the upper position sensor 7 and the lower position sensor 6 are respectively connected with a motor power conversion controller 9 through signal cables.
The power distribution control box further comprises a battery pack 10, wherein the battery pack 10 is fixed in the power distribution control box 1, or fixed on a base 12, or buried underground, and the motor 3, the motor/generator unit 4, the battery pack 10 and a power connector 11 are respectively connected with the motor power conversion controller 9 through power cables. The motor/generator unit 4 has the motor and the generator coaxial with each other, and uses the reversibility of the motor and the generator to integrate the generator and the motor into one.
The motor/generator unit 4 comprises two operating states:
in the starting process and the oil pumping process: when the electric pumping unit works in the electric state, additional power is provided for the pumping unit 8 through the speed reducer 5, and when the electric pumping unit works in the electric state, electric power is supplied by the battery pack 10;
in the process of stopping and braking and the oil absorption process: when the power generating device works in a power generating state, the inertial power of the oil pumping unit 8 and the speed reducer 5 is converted into electric energy, and the electric energy is stored in the battery pack 10.
The motor power conversion controller 9 is used for judging whether the oil pumping unit 8 works in the oil pumping process or the oil absorption process according to the signals of the upper position sensor 7 and the lower position sensor 6, and the motor power conversion controller 9 is used for managing the charging and discharging process of the battery pack 10; when the battery pack 10 is short of electricity, the power connector 11 supplements the battery pack 10 with electric energy, and the electric energy can be stored at a low electricity price at night and used in daytime.
The motor 3: the external power supply provides electric energy to provide conventional power for the pumping unit.
When the pumping unit is started, the motor 3 and the motor/generator unit 4 work simultaneously, the pumping unit is started by utilizing the maximum torque, and the motor/generator unit 4 is powered by the electric energy stored in the battery pack 10, so that the starting current of the motor 3 can be reduced, and the impact on a power grid is reduced.
When the pumping unit normally operates, two processes are provided, one is an oil pumping process, and the other is an oil absorbing process.
During the oil pumping process, as the load of the oil pumping motor 3 is increased, the motor/generator set 4 works in a motor state, and the battery pack 10 provides energy to provide power for the motor 3 so as to reduce the load of the motor.
In the oil suction process, the load of the motor 3 of the oil pumping unit is reduced, the motor/generator set 4 is changed into a generator state, the load of the motor of the oil pumping unit is increased, and redundant energy is converted into electric energy which is stored in the battery pack 10.
When the pumping unit stops and brakes. The motor 3 stops working, the motor/generator set 4 works in a power generation state, the torque increased by the generator improves the braking effect, and redundant mechanical energy is converted into electric energy to be stored in the battery pack 10, so that the energy-saving effect is achieved.
Operating principle of the motor/generator unit 4:
electric motor and generator: both are constructed identically. All consists of a coil, a magnet, a commutator and an electric brush. The connection mode of the two elements is the same. All the elements are connected in series to form a circuit. Both are influenced by the direction of the magnetic field, the direction of the current generated in the generator is related to the direction of the magnetic field; the force direction of the coil in the motor is related to the direction of the magnetic field.
The main differences are as follows:
the conversion of work purpose and energy is different: the generator needs to do work from the outside to convert the mechanical energy into electric energy; the motor does work externally to convert the electric energy into mechanical energy.
The generator has an operating state: the motor state means that the generator is dragged by the power grid to operate after being connected to the power grid, but the generator does not generate power and only rotates. This is now an electric motor. Therefore, in an ideal state, the problems of circuit connection and excitation are solved, if a motor can be used for ideally giving excitation current to a rotor and giving the rotating speed of a prime motor 3000, the voltage is output by a stator instead, so that the electric energy can be generated, and in the ideal state, the loss is not time, the excitation and the rotating speed are adjusted, and the generated electricity and the electric energy consumed by the motor can be basically the same.
Therefore, the motor/generator unit 4: the structure is particularly suitable for the field and exists for effectively adjusting the load fluctuation of a power grid. In practical application, the motor and the generator can be separated, and the electronic control part of the motor and the generator can be relatively simple.
Performance comparison
Will the utility model discloses carry out comparison energy-conserving effect with current beam-pumping unit as follows:
| group of | Starting up | Oil pumping unit | Oil absorption | Parking | Energy consumption |
| The utility model discloses | Auxiliary motor action and low energy consumption | Auxiliary motor action and low energy consumption | Inertia moment power generation and battery charging | Inertia moment power generation and battery charging | Low (25% -40%) |
| Oil pumping unit in prior art | Large starting torque and high energy consumption | Large oil pumping torque and high energy consumption | Small oil pumping moment and large inertia | Manual brake device with small oil pumping torque and large inertia | High (100%) |
To sum up, the utility model discloses utilize the surplus kinetic energy of oil pumping in-process low-power consumption or braking process to generate electricity, with electric energy storage in the group battery, at beam-pumping unit start-up formula, perhaps when transshipping, utilize the electric energy drive auxiliary motor of group battery, for the beam-pumping unit provides the helping hand, reach the purpose of energy saving. The utility model discloses can solve the big horse of beam-pumping unit and draw the power consumption problem of dolly. The problems of low motor power factor and large load change of the beam pumping unit can be solved, and the running efficiency of the motor is improved. The utility model discloses can become level and smooth with the power output of former beam-pumping unit engine, reduce and strike the electric wire netting, improve the transmission efficiency of electric wire netting. The utility model discloses there are multiple combination mode and method, can establish motor/generator unit as a generator and a motor alone. The group battery can be placed with the block terminal in, also can set up and bury the ground case, can prevent that the temperature is crossed excessively or is too high winter and summer season, the efficiency of guarantee group battery.
Claims (5)
1. An energy-saving device of a beam-pumping unit comprises a distribution control box (1) fixed on a base (12), a manual brake device (2), a motor (3), a speed reducer (5) and a pumping unit (8), wherein a motor power conversion controller (9) and a power connector (11) are assembled in the distribution control box (1), and the energy-saving device is characterized in that the motor (3) and a motor/generator unit (4) are arranged between the speed reducers (5), the motor (3) and the motor/generator unit (4) are connected together through a transmission belt (13); an upper position sensor (7) is arranged above an output shaft of the speed reducer (5), and a lower position sensor (6) is arranged below the output shaft of the speed reducer (5); the upper position sensor (7) and the lower position sensor (6) are used for sensing the position of the output shaft of the speed reducer; the upper position sensor (7) and the lower position sensor (6) are respectively connected with a motor power conversion controller (9) through signal cables.
2. The energy-saving device of the beam-pumping unit as claimed in claim 1, further comprising a battery pack (10), wherein the battery pack (10) is fixed in the power distribution control box (1), or fixed on the base (12), or buried underground, and the motor (3), the motor/generator set (4), the battery pack (10), and the power connector (11) are respectively connected with the motor power conversion controller (9) through power cables.
3. The energy-saving device of the beam-pumping unit as claimed in claim 2, wherein the motor/generator set (4) is used for coaxially arranging the motor and the generator, and the reversibility of the motor and the generator is used for integrating the generator and the motor.
4. Energy saving device for beam-pumping unit according to claim 3, characterized by that the motor/generator unit (4) comprises two operating states:
in the starting process and the oil pumping process: when the electric pumping unit works in the electric state, additional power is provided for the pumping unit (8) through the speed reducer (5), and when the electric pumping unit works in the electric state, electric power is supplied by the battery pack (10);
in the process of stopping and braking and the oil absorption process: when the power generating device works in a power generating state, inertial power of the oil pumping unit (8) and the speed reducer (5) is converted into electric energy, and the electric energy is stored in the battery pack (10).
5. The energy-saving device of the beam-pumping unit according to claim 2, wherein the motor power conversion controller (9) is used for judging whether the pumping unit (8) works in the oil pumping process or the oil suction process according to the signals of the upper position sensor (7) and the lower position sensor (6), and the motor power conversion controller (9) is used for managing the charging and discharging process of the battery pack (10); when the battery pack (10) is insufficient, the battery pack (10) is supplemented with electric energy through the power connector (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021567898.8U CN212572095U (en) | 2020-08-01 | 2020-08-01 | Energy-saving device of beam-pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021567898.8U CN212572095U (en) | 2020-08-01 | 2020-08-01 | Energy-saving device of beam-pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212572095U true CN212572095U (en) | 2021-02-19 |
Family
ID=74630509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021567898.8U Expired - Fee Related CN212572095U (en) | 2020-08-01 | 2020-08-01 | Energy-saving device of beam-pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212572095U (en) |
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2020
- 2020-08-01 CN CN202021567898.8U patent/CN212572095U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210219 Termination date: 20210801 |