CN221053859U

CN221053859U - Direct-drive system of oilfield water injection pump

Info

Publication number: CN221053859U
Application number: CN202320775447.0U
Authority: CN
Inventors: 王帅; 左振君; 袁辉; 王敏; 严英武
Original assignee: Recon Technology Co ltd
Current assignee: Recon Technology Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2024-05-31
Anticipated expiration: 2033-04-10

Abstract

The application discloses a direct-drive system of an oilfield water injection pump. The oilfield water injection pump direct-drive system comprises a water injection pump and a motor, wherein an output shaft of the motor is connected with an input shaft of the water injection pump; the cooling device is connected with the motor; the control cabinet is internally provided with a circuit board, the circuit board is provided with a controller, and the controller is respectively and electrically connected with the cooling device and the motor. The application solves the technical problems of low transmission efficiency, high energy consumption, easy damage of used parts, easy eccentric wear of the pump shaft of the water injection pump and potential safety hazard of the traditional driving system caused by the adoption of an asynchronous motor, belt transmission and belt pulley driving of the traditional driving system.

Description

Direct-drive system of oilfield water injection pump

Technical Field

The application relates to the technical field of water injection pumps, in particular to a direct-drive system of an oilfield water injection pump.

Background

Most of the conventional driving systems used on the water injection pumps of the oil fields at present consist of an asynchronous motor, belt transmission, belt pulleys and the like, and the transmission efficiency of the asynchronous motor for driving the belt pulleys to work is low; and the belt matched with the asynchronous motor is easy to damage, the replacement frequency is very high, the unilateral tension applied by the belt to the pump shaft of the water injection pump is large, the eccentric wear phenomenon of the pump shaft of the water injection pump and the supporting piece can be caused, the belt is easy to cause the injury of workers in the working process, and the belt is very unsafe.

Aiming at the problems that the traditional driving system in the related technology has low transmission efficiency and high energy consumption, used parts are easy to damage, the eccentric wear of the pump shaft of the water injection pump is easy to cause and potential safety hazard exists, no effective solution is proposed at present.

Disclosure of Invention

The application mainly aims to provide a direct-drive system of an oilfield water injection pump, which aims to solve the problems that the traditional drive system is low in transmission efficiency and high in energy consumption, used parts are easy to damage, eccentric wear of a pump shaft of the water injection pump is easy to cause and potential safety hazards exist.

In order to achieve the above purpose, the application provides a direct drive system of an oilfield water injection pump.

The oilfield water injection pump direct drive system according to the present application comprises: the water injection pump comprises a motor, wherein an output shaft of the motor is connected with an input shaft of the water injection pump; the cooling device is connected with the motor; the control cabinet is internally provided with a circuit board, the circuit board is provided with a controller, and the controller is respectively and electrically connected with the cooling device and the motor.

Further, the method further comprises the following steps: and the variable frequency controller is electrically connected with the motor.

Further, the control cabinet includes: the cabinet body is connected with a cabinet door; the circuit board is also provided with: the temperature collector and the communicator are respectively and electrically connected with the controller.

Further, the motor is a permanent magnet synchronous motor.

Further, a temperature sensor is arranged in the motor, and the temperature sensor is electrically connected with the temperature collector through a temperature collecting cable.

Further, the method further comprises the following steps: the touch screen is arranged at the position, close to the cabinet door, inside the cabinet body and is electrically connected with the controller.

Furthermore, the cooling device is a circulating water cooling device, and the circulating water cooling device is connected with the motor through a high-pressure water delivery pipe.

Further, the method further comprises the following steps: and the remote knob switch is in communication connection with the communicator.

Further, still be equipped with in the motor: a frequency output sensor, a first current sensor, a first voltage sensor, a first power sensor;

The circuit board is also provided with: the controller is respectively and electrically connected with the frequency output collector, the current collector, the voltage collector and the power collector;

the frequency output sensor is electrically connected with the frequency output collector; the first current sensor is electrically connected with the current collector; the first voltage sensor is electrically connected with the voltage collector; the first power sensor is electrically connected with the power collector.

Further, the variable frequency controller is internally provided with: a second circuit board; the second circuit board is provided with: the MCU, the three-phase voltage sensor, the second current sensor and the second power sensor; the MCU is electrically connected with the three-phase voltage sensor, the second current sensor and the second power sensor respectively.

In the embodiment of the application, a pump shaft of a water injection pump is directly driven by a motor to replace a traditional driving system, and an output shaft of the motor is connected with an input shaft of the water injection pump through the water injection pump and the motor; the cooling device is connected with the motor; the control cabinet, be equipped with the circuit board in the control cabinet, be equipped with the controller on the circuit board, the controller respectively with the heat sink with the motor electricity is connected, has reached the output shaft of motor directly with the purpose of water injection pump shaft connection to realize transmission efficiency improvement, the energy consumption reduces, improve the security performance, avoid the technical effect of eccentric wear water injection pump shaft, and then solved because traditional actuating system adopts asynchronous motor, belt drive, belt pulley drive, traditional actuating system transmission inefficiency that causes, the energy consumption is high, the spare part of use is fragile, lead to the water injection pump shaft to wear off the side easily and have the technical problem of potential safety hazard.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application. In the drawings:

FIG. 1 is a schematic diagram of a direct drive system for an oilfield injection pump in accordance with an embodiment of the present application;

FIG. 2 is a schematic circuit diagram of a direct drive system of an oilfield injection pump in accordance with an embodiment of the application;

fig. 3 is a schematic circuit diagram of a variable frequency controller according to an embodiment of the present application.

Reference numerals

1. A motor; 2. a cooling device; 3. a control cabinet; 4. a cabinet body; 5. a cabinet door; 6. a high-pressure water pipe; 7. a controller; 8. a temperature collector; 9. a communicator; 10. a circuit board; 11. a variable frequency controller; 12. a temperature sensor; 13. a touch screen; 14. a remote knob switch; 15. a frequency output collector; 16. a current collector; 17. a voltage collector; 18. a power harvester; 19. a frequency output sensor; 20. a first current sensor; 21. a first voltage sensor; 22. a first power sensor; 23. a three-phase voltage sensor; 24. a second voltage sensor; 25. a second current sensor; 26. a second power sensor; 27. an MCU; 28. and a second circuit board.

Detailed Description

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1-3, the present application relates to a direct drive system of an oilfield injection pump, comprising: the water injection pump comprises a motor 1, wherein an output shaft of the motor 1 is connected with an input shaft of the water injection pump; the cooling device 2 is connected with the motor 1; the control cabinet 3, be equipped with circuit board 10 in the control cabinet 3, be equipped with controller 7 on the circuit board 10, controller 7 respectively with heat sink 2 with motor 1 electricity is connected.

Specifically, the water injection pump is used for injecting water to an oil well with insufficient liquid supply, diluting the oil, and lifting the liquid level of the oil to a certain height so as to facilitate oil exploitation; the motor 1, the output shaft of the motor 1 is directly connected with the input shaft of the water injection pump, is used for providing power for the water injection pump through the motor 1, forms an integral direct-drive system, replaces the traditional belt and belt pulley driving system, greatly reduces the energy consumption, improves the transmission efficiency, also avoids the problem that the belt or belt pulley hurts people, and is safer; the cooling device 2 is connected with the motor 1 and used for cooling the motor 1, and the cooling device 2 can be a cold water cooling device, an air cooling device, a hydrogen cooling device, an oil cooling device and the like; the control cabinet 3, the control cabinet 3 is used for controlling, a circuit board 10 is arranged in the control cabinet, a controller 7 is arranged on the circuit board 10, and the controller 7 is used for controlling the rotating speed of the motor 1 and controlling the cooling power of the cooling device 2; so, through the operation of switch board 3 control motor 1 to motor 1's output shaft is direct to be connected with the water injection pump shaft, thereby makes motor 1 directly drive the water injection pump operation, has replaced traditional transmission mode, and controls heat sink 2 through switch board 3 and cools down for motor 1, avoids motor 1 overheat fault.

As can be seen from the above description, in the embodiment of the present application, the pump shaft of the water injection pump is directly driven by the motor 1, so as to replace the conventional driving system, and the output shaft of the motor 1 is connected with the input shaft of the water injection pump through the water injection pump, so that the water injection pump is driven by the motor 1; the cooling device 2 is connected with the motor 1; the control cabinet 3, be equipped with circuit board 10 in the control cabinet 3, be equipped with controller 7 on the circuit board 10, controller 7 respectively with heat sink 2 with motor 1 electricity is connected, has reached the output shaft of motor 1 directly with the purpose of water injection pump shaft connection to realize transmission efficiency improvement, the energy consumption reduces, improve the security performance, avoid the technical effect of eccentric wear water injection pump shaft, and then solved because traditional actuating system adopts asynchronous motor 1, belt drive, belt pulley drive, the spare part that traditional actuating system transmission efficiency low, the energy consumption is high, use is fragile, lead to the water injection pump shaft to wear partially and have the technical problem of potential safety hazard easily.

Preferably, the method further comprises: the variable frequency controller 11 is electrically connected with the motor 1, the variable frequency controller 11 is used for converting 50hz alternating current of a power grid into input electricity required by the working of the motor 1, and the motor 1 is at a constant speed when the variable frequency controller 11 outputs constant frequency; when the variable frequency controller 11 outputs high power, the torque of the motor 1 becomes large; when the variable frequency controller 11 inputs low power, the torque of the motor 1 becomes small; the variable frequency controller 11 can output a control torque in a larger range according to a load, and when the load is light, the output torque becomes small; when the load is heavy, the output torque is increased, and the torque of the motor 1 is regulated by the variable frequency controller 11, so that the aim of regulating the water injection quantity of the water injection pump is fulfilled; the variable frequency controller 11 also has overcurrent, overvoltage and overload protection functions so as to realize flexible starting and smooth running; the variable frequency controller 11 analyzes parameters of the permanent magnet synchronous motor 1 in real time, adopts a dynamic variable frequency control mode, cannot impact a power grid due to overlarge current at the starting moment, has larger starting torque, and can realize on-load starting.

Preferably, the control cabinet 3 includes: the cabinet body 4 is used for bearing and protecting circuit components arranged in the cabinet body 4, a cabinet door 5 connected with the cabinet body 4, and the cabinet door 5 is used for protecting parts arranged in the cabinet body 4 when closed and performing manual operation when opened; a circuit board 10 is arranged in the cabinet body 4, and the circuit board 10 is used for bearing the circuit modules arranged on the circuit board 10 and connecting the corresponding circuit modules; the circuit board 10 is provided with: the temperature collector 8 and the communicator 9 are respectively and electrically connected with the controller 7, the temperature collector 8 is used for collecting the temperature measured by the temperature sensor 12 and transmitting the measured data to the controller 7, the controller 7 is used for controlling the variable frequency controller 11 to control the motor 1 to reduce the rotating speed or controlling the cooling device to cool the motor 1 according to the temperature data measured by the temperature collector 8 when the temperature is overhigh; the communicator 9 is used for communicating and transmitting communication signals to the controller 7 or feeding back signals of the controller 7 to the communication terminal, so that the data of three-phase voltage input, voltage output, current output, variable frequency, power and the like measured by the variable frequency controller 11 and the temperature data acquired by the temperature acquisition device 8 are remotely controlled or acquired through the communication terminal; the control cabinet 3 is connected with municipal power supply and electricity taking, and is electrically connected with the motor 1 through a cable, and the control cabinet 3 is used for controlling starting and stopping; the control cabinet 3 is further electrically connected to the variable frequency controller 11, and is configured to obtain data, such as three-phase voltage input, voltage output, current output, variable frequency, power, etc., of the motor 1 collected by the variable frequency controller 11, so as to control output current, output voltage, output frequency, output power, etc., of the motor 1.

Preferably, the motor 1 is a permanent magnet synchronous motor 1, and the permanent magnet synchronous motor 1 is a built-in permanent magnet motor 1, which has the advantages of high efficiency, large power factor, large unit power density, strong weak magnetic speed expansion capability, high dynamic response speed and the like; the permanent magnet in the permanent magnet synchronous motor 1 provides all excitation magnetic fields of the permanent magnet motor 1, when the motor is static, three-phase symmetrical current is introduced into a stator winding to generate a stator rotating magnetic field, the permanent magnet placed on a rotor forms a rotor rotating magnetic field, asynchronous torque generated by interaction of the stator rotating magnetic field and the rotor rotating magnetic field enables the rotor to start to accelerate from static, so that the motor 1 generates rotating torque output, the starting torque is large, the motor can be started in a loaded mode, the speed is smoothly regulated, impact on a power grid caused by excessive current due to instantaneous loading of the starting is avoided, and the power grid is damaged.

Preferably, a temperature sensor 12 is arranged in the motor 1, the temperature sensor 12 is used for detecting real-time temperature in the motor 1, the temperature sensor 12 is electrically connected with the temperature collector 8 through a temperature collecting cable, the temperature collecting cable is used for transmitting temperature data detected by the temperature sensor 12 to the temperature collector 8, the temperature collector 8 is used for converting the received temperature data into data identifiable by the controller 7 and transmitting the data to the controller 7, and the controller 7 receives a feedback control signal to control the motor 1 to be decelerated or closed or to cool down the motor 1.

Preferably, the method further comprises: the touch screen 13, the touch screen 13 sets up in the inside position department that is close to cabinet door 5 of cabinet body 4, and be connected with the controller 7 electricity, the touch screen 13 is used for through the data such as configuration integration mode real-time display motor 1's output current, output voltage, output frequency, output power, real-time temperature and synchronous variable frequency controller 11's three-phase voltage input, voltage output, current output, variable frequency, data such as power, through setting up the mode of touch screen 13, not only be convenient for operating personnel observe data, can also control or control variable frequency controller 11 through touch screen 13 control controller 7 and control, it is very convenient.

Preferably, the cooling device 2 is a circulating water cooling device, the circulating water cooling device is used for cooling the motor 1 through circulating water, the circulating water cooling device is connected with the motor 1 through a high-pressure water conveying pipe 6, the circulating water cooling device is connected with the motor 1 through two high-pressure water conveying pipes 6, one high-pressure water conveying pipe 6 inputs low-temperature cold water into the motor 1, and the other high-pressure water conveying pipe 6 returns water heated by the motor 1 so as to achieve the effect of circularly cooling the motor 1; compared with an air cooling device, the circulating water cooling device can cool down the motor 1 more effectively due to eddy current loss, stator copper loss and temperature rise generated by mechanical friction in the running process of the motor 1 by means of a water cooling technology; and the circulating water cooling device has better cooling effect on the motor 1 relative to the air cooling mode of convection type heat dissipation and the water cooling of conduction type heat dissipation, the better cooling effect optimizes the working state of the motor 1, and the working efficiency of the motor 1 is also improved, so that the effects of energy conservation and consumption reduction are realized.

Preferably, the method further comprises: the remote knob switch 14, remote knob switch 14 and communication ware 9 communication connection for remote control need not to walk to the switch board 3 before the operation, and is more convenient, can install remote knob switch 14 in predetermined position department commonly used, and is very convenient.

Preferably, the motor 1 is further provided with: a frequency output sensor 19 for detecting an output frequency of the motor 1; a first current sensor 20 for detecting an output current of the motor 1; a first voltage sensor 21 for detecting an output voltage of the motor 1; a first power sensor 22 for detecting the output power of the motor 1; the circuit board 10 is also provided with: a frequency output collector 15 electrically connected to the frequency output sensor 19 for converting output frequency data of the motor 1 detected by the frequency output sensor 19 into data recognizable by the controller 7; a current collector 16 electrically connected to the first current sensor 20 for converting the output current of the motor 1 detected by the first current sensor 20 into data recognizable by the controller 7; a voltage collector 17 electrically connected to the first voltage sensor 21 for detecting, with the first voltage sensor 21, that the output voltage of the motor 1 is converted into data recognizable by the controller 7; the power collector 18 is electrically connected with the first power sensor 22 and is used for converting the output power of the motor 1 detected by the first power sensor 22 into data which can be identified by the controller 7, and the controller 7 is respectively electrically connected with the frequency output collector 15, the current collector 16, the voltage collector 17 and the power collector 18 and is used for controlling the motor 1 according to the output current, the output voltage, the output frequency, the output power and the real-time temperature of the motor 1 and transmitting the data to the touch screen 13 for real-time display.

Preferably, the variable frequency controller 11 is provided with: a second circuit board 28, the second circuit board 28 for carrying and connecting circuit elements disposed thereon; the MCU27 is used for controlling output power according to signals fed back by the sensor; a three-phase voltage sensor 23 for detecting a three-phase voltage input and feeding back the data to the MCU27; a second voltage sensor 24 for detecting an output voltage and feeding back the data to the MCU27; a second current sensor 25 for detecting an output current and feeding back the data to the MCU27; a second power sensor 26 for detecting output power and feeding back the data to the MCU27; the variable frequency controller 11 is used for detecting variable frequency, the variable frequency controller 11 is electrically connected with the controller 7, the variable frequency controller 11 is controlled by the controller 7, or data such as three-phase voltage input, voltage output, current output, variable frequency, output power and the like detected by the variable frequency controller 11 are displayed in real time through the touch screen 13.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An oilfield water injection pump direct drive system comprising: a water injection pump; characterized by further comprising:

the output shaft of the motor (1) is connected with the input shaft of the water injection pump;

The cooling device (2) is connected with the motor (1);

The control cabinet (3), be equipped with circuit board (10) in control cabinet (3), be equipped with controller (7) on circuit board (10), controller (7) respectively with heat sink (2) with motor (1) electricity is connected;

The control cabinet (3) comprises: a cabinet body (4) and a cabinet door (5) connected with the cabinet body (4); the circuit board (10) is also provided with: the temperature collector (8) and the communicator (9) are respectively and electrically connected with the controller (7);

Still be equipped with in motor (1): a frequency output sensor (19), a first current sensor (20), a first voltage sensor (21), a first power sensor (22);

The circuit board (10) is also provided with: the controller (7) is electrically connected with the frequency output collector (15), the current collector (16), the voltage collector (17) and the power collector (18) respectively;

the frequency output sensor (19) is electrically connected with the frequency output collector (15); the first current sensor (20) is electrically connected with the current collector (16); the first voltage sensor (21) is electrically connected with the voltage collector (17); the first power sensor (22) is electrically connected with the power collector (18);

Further comprises: the variable frequency controller (11), the said variable frequency controller (11) is connected with said electrical machinery (1) electrically; the variable frequency controller (11) is internally provided with: a second circuit board (28); the second circuit board (28) is provided with: the MCU (27), the three-phase voltage sensor (23), the second voltage sensor (24), the second current sensor (25) and the second power sensor (26); the MCU (27) is electrically connected with the three-phase voltage sensor (23), the second voltage sensor (24), the second current sensor (25) and the second power sensor (26) respectively.

2. The oilfield water injection pump direct drive system of claim 1, wherein the motor (1) is a permanent magnet synchronous motor (1).

3. The oilfield water injection pump direct drive system according to claim 1, wherein a temperature sensor (12) is arranged in the motor (1), and the temperature sensor (12) is electrically connected with the temperature collector (8) through a temperature collection cable.

4. The oilfield water injection pump direct drive system of claim 1, further comprising: the touch screen (13) is arranged at the position, close to the cabinet door (5), inside the cabinet body (4), and is electrically connected with the controller (7).

5. The oilfield water injection pump direct drive system according to claim 1, wherein the cooling device (2) is a circulating water cooling device, and the circulating water cooling device is connected with the motor (1) through a high-pressure water delivery pipe (6).

6. The oilfield water injection pump direct drive system of claim 1, further comprising: -a remote rotary switch (14), said remote rotary switch (14) being in communication with said communicator (9).