CN109441791B - Intelligent control system and method for double-pump combined control water injection of water injection station - Google Patents
Intelligent control system and method for double-pump combined control water injection of water injection station Download PDFInfo
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- CN109441791B CN109441791B CN201811360390.8A CN201811360390A CN109441791B CN 109441791 B CN109441791 B CN 109441791B CN 201811360390 A CN201811360390 A CN 201811360390A CN 109441791 B CN109441791 B CN 109441791B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 258
- 238000002347 injection Methods 0.000 title claims abstract description 211
- 239000007924 injection Substances 0.000 title claims abstract description 211
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims description 43
- 238000004891 communication Methods 0.000 claims description 33
- 230000005611 electricity Effects 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- General Engineering & Computer Science (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a double-pump combined control water injection intelligent control system and method for a water injection station, wherein the system comprises a host, an auxiliary machine, a combined control switch and a water distributor manifold, wherein the host comprises a main controller, a first vector frequency converter, a first water injection pump motor and a first pressure sensor, the main controller is connected with the first vector frequency converter, the first vector frequency converter is respectively connected with the first water injection pump motor and the first pressure sensor, the first water injection pump motor and the first pressure sensor are respectively connected with the water distributor manifold, the auxiliary machine comprises an auxiliary controller, a second vector frequency converter, a second water injection pump motor and a second pressure sensor, the auxiliary controller is connected with the second vector frequency converter, the second vector frequency converter is respectively connected with the second water injection pump motor and the second pressure sensor, the second water injection pump motor and the second pressure sensor are respectively connected with the water distributor manifold, and the combined control switch is respectively connected with the main controller and the auxiliary controller.
Description
Technical Field
The invention belongs to the technical field of oilfield water injection systems, and particularly relates to a double-pump combined control water injection intelligent control system and method for a water injection station, which can realize intelligent control and automatic water injection of the water injection station.
Background
In the development and production process of oil fields, the oil reservoir pressure is usually supplemented and maintained by manually injecting water into the oil reservoir, so that the oil extraction efficiency is improved, and therefore, the water injection system is required to maintain stable water injection quantity and water injection pressure, and the water injection control system plays a very important role in the operation stability as a core part of the water injection system. At present, most water injection pumps are started, stopped and operated at power frequency, in order to prevent the motor from being large in current impact during starting and avoid damaging a water injection mechanical system and a water delivery pipeline system, the water injection loop is required to be depressurized, then the water injection pump is started, and finally the water injection pressure is adjusted to a target value through a manual adjusting reflux valve, so that the problems of energy waste, low water injection efficiency, high manual operation danger coefficient, inaccurate manual adjusting pressure and the like exist in the method
When a water injection station has a plurality of water injection pumps to work simultaneously, and has two variable frequency operation, often can appear two water injection pump operating frequency different conditions, lead to a water injection pump work to be in high frequency operation, and another one is in low frequency operation, and the water injection pump motor of low frequency operation is easy to generate heat like this, can burn the motor when serious, also causes the waste of electric energy simultaneously.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a double-pump combined control water injection intelligent control system and method for a water injection station, which overcome the defects in the prior art 1: firstly, the water injection loop is required to be depressurized, then the water injection pump is started, and finally, the water injection pressure is adjusted to a target value through a manual adjusting reflux valve, so that the method has the advantages of energy waste, low water injection efficiency, high manual operation danger coefficient and inaccurate manual adjusting pressure; 2: when two water injection pumps are operated in variable frequency mode, the condition that the working frequencies of the two water injection pumps are different often occurs, so that one water injection pump is operated at high frequency, the other water injection pump is operated at low frequency, and therefore a water injection pump motor operated at low frequency is easy to generate heat, and the motor can be burnt when severe; 3: and meanwhile, the waste of electric energy and the like are caused.
In order to solve the technical problems, the technical scheme of the invention is as follows: an intelligent control method for double-pump joint control water injection of a water injection station comprises the following steps:
step one, electrifying a double-pump joint control water injection intelligent control system of a water injection station, performing self-checking on the system, and alarming to enter a ready-to-start state if all components have no faults;
step two, after the system self-checking, firstly judging the working state of the combined control switch, and if the combined control switch is in an off state, enabling the main machine and the auxiliary machine to enter an independent running state; if the combined control switch is in a closed state, the main machine and the auxiliary machine enter a combined control running state.
Step three, when the combined control switch is in a closed state, the host machine is started to operate, if the operating frequency of the host machine reaches or exceeds 50Hz, the actual operating pressure of the first water injection pump motor is smaller than the set target pressure, and the operating time exceeds 30min, at the moment, the main controller controls the auxiliary controller to automatically start the auxiliary machine through the combined control switch, otherwise, the system enters a stand-alone operating state of the host machine;
step four, starting the auxiliary machine, enabling the system to enter a double-pump combined control state, and automatically adjusting according to the set target pressure and the actual running pressure of the first water injection pump motor/the second water injection pump motor until the pressure value P of the first pressure sensor Actual practice is that of With the target pressure P set by the first display control unit Setting up Equal and the frequency value f of the first vector frequency converter of the host 1 Frequency value f of second vector frequency converter of auxiliary machine 2 Equivalently, the system enters a steady operation state, namely:and->；
Step five, after the system enters a stable operation state, if the first vector frequency converter frequency f of the host machine 1 If the frequency is smaller than 40Hz, the first independent fan and the second independent fan are started, so that the heat dissipation performance of the first water injection pump motor and the second water injection pump motor is not reduced under low frequency, and the service life of the motors is prolonged;
step six, when the set target pressure of the water injection station is changed, if the pressure value of the first pressure sensor is larger than the set target pressure value, and the frequency values of the first vector frequency converter and the second vector frequency converter are smaller than 25Hz, closing the auxiliary machine at the moment, entering a single working state of the main machine, automatically adjusting the system to reach a new stable state, and avoiding the first water injection pump motor and the second water injection pump motorAt ultralow frequencies, the fan is not hot enough to burn out, namely:and->。
And in the third step, the main machine and the auxiliary machine are started in a vector control full-load soft start mode with pressure, the start time is set to 40s, and the maximum current impact of starting is ensured to be smaller than rated currents of the first water injection pump motor and the second water injection pump motor.
The intelligent control system for double-pump combined control water injection of the water injection station comprises a host, an auxiliary machine, a combined control switch and a water distributor manifold, wherein the host comprises a main controller, a first vector frequency converter, a first water injection pump motor and a first pressure sensor, the main controller is connected with the first vector frequency converter, the first vector frequency converter is respectively connected with the first water injection pump motor and the first pressure sensor, the first water injection pump motor and the first pressure sensor are respectively connected with the water distributor manifold, the auxiliary machine comprises an auxiliary controller, a second vector frequency converter, a second water injection pump motor and a second pressure sensor, the auxiliary controller is connected with the second vector frequency converter, the second vector frequency converter is respectively connected with the second water injection pump motor and the second pressure sensor, the second water injection pump motor and the second pressure sensor are respectively connected with the water distributor manifold, and the combined control switch is respectively connected with the main controller and the auxiliary controller;
the host computer still includes first switch, first apparent accuse unit, first electricity and send out the control unit and first independent fan, wherein main control unit is connected with first switch, first vector converter, first electricity send out the control unit and allies oneself with the control switch respectively, first apparent accuse unit connects first switch, first vector converter connects first water injection pump motor, first independent fan and first pressure sensor respectively, wherein first water injection pump motor connects first independent fan and water knockout drum manifold respectively, first pressure sensor connects water knockout drum manifold;
the auxiliary machine further comprises a second switch, a second display control unit, a second electric parameter monitoring unit and a second independent fan, wherein the auxiliary controller is respectively connected with the second switch, a second vector frequency converter, the second electric parameter monitoring unit and the combined control switch, the second display control unit is connected with the second switch, the second vector frequency converter is respectively connected with a second water injection pump motor, the second independent fan and a second pressure sensor, the second water injection pump motor is respectively connected with the second independent fan and a water separator manifold, and the second pressure sensor is connected with the water separator manifold;
the combined control switch comprises a knob, a contact and a mounting base, wherein the knob is connected with the contact and is arranged on the mounting base; the main controller and the auxiliary controller comprise a control PC board, an output PC board, a controller shell, a point position indicator lamp and an external communication interface, wherein the controller shell of the main controller and the auxiliary controller internally comprises the control PC board and the output PC board, the control PC board is connected with the output PC board, and the point position indicator lamp and the external communication interface are arranged outside the controller shell;
the first display control unit and the second display control unit comprise a display control shell, a display control screen, a touch pad, a power I/O interface and a communication interface, wherein the upper end face of the display control shell is provided with the display control screen and the touch pad, and the side wall of the display control shell is provided with the power I/O interface and the communication interface.
The first switch and the second switch comprise a switch shell, a communication interface RJ45, an LED indicator light, an AlarmI/O interface and a redundant power supply I/O interface, wherein the switch shell is provided with the communication interface RJ45, the LED indicator light, the AlarmI/O interface and the redundant power supply I/O interface.
The first electric parameter monitoring unit and the second electric parameter monitoring unit comprise an electric parameter monitoring shell, a display control screen, a setting key, a power supply I/O interface, a CTI/O interface, a voltage input I/O interface and a communication I/O interface, wherein the display control screen and the setting key are arranged on the upper end face of the electric parameter monitoring shell, and the power supply I/O interface, the CTI/O interface, the voltage input I/O interface and the communication I/O interface are arranged on the side wall of the electric parameter monitoring shell.
Compared with the prior art, the invention has the advantages that:
(1) According to the invention, a mode of controlling the auxiliary machine by the host machine is adopted, the auxiliary machine is automatically thrown and cut off according to the water injection condition change, and the normal operation of the host machine and the auxiliary machine is ensured to keep the same frequency operation, so that the energy consumption of a water injection system is ensured to be the lowest, the problems that a water injection motor running at a low frequency excessively heats and burns electricity when two water injection pumps run at different frequencies are avoided, the double-pump combined control automatic water injection of the water injection station is realized, the automatic control degree of the water injection station is improved, the stable operation of the water injection system is realized, the energy is saved, the consumption is reduced, and the automatic water injection unattended operation of the water injection station is realized;
(2) The invention solves the problems that a plurality of water injection pump motors of a water injection station work, when two vector frequency converters work simultaneously, the two water injection pump motors are guaranteed to work cooperatively at the same frequency, the energy consumption of a frequency conversion system is guaranteed to be the lowest, the system is optimized, and simultaneously, the water injection station has 3 operation modes of double pump combined control, double pump independence and single pump independence, and automatic switching is carried out;
(3) The intelligent water injection control system has the advantages of reasonable design, simple structure, convenient operation and low cost, and greatly improves the working efficiency.
Drawings
FIG. 1, a connection block diagram of the present invention;
FIG. 2, a process flow diagram of the present invention.
Reference numerals illustrate:
the system comprises a main machine, a 2-first independent fan, a 3-first water injection pump motor, a 4-first vector frequency converter, a 5-first pressure sensor, a 6-main controller, a 7-first electric parameter monitoring unit, an 8-first switch, a 9-first display control unit, a 10-water separator manifold, an 11-combined control switch, a 12-auxiliary machine, a 13-second independent fan, a 14-second water injection pump motor, a 15-second vector frequency converter, a 16-second pressure sensor, a 17-second electric parameter monitoring unit, an 18-auxiliary monitor, a 19-second display control unit and a 20-second switch.
Detailed Description
The following describes specific embodiments of the invention with reference to the drawings and examples:
it should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely used in conjunction with the disclosure of the present invention, and are not intended to limit the applicable limitations of the present invention, but any modification, variation in proportions, or adjustment of the size of the structures, proportions, etc. should be construed as falling within the scope of the disclosure without affecting the efficacy or achievement of the present invention.
Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
Example 1
As shown in fig. 1, the invention discloses a double-pump combined control water injection intelligent control system of a water injection station, which comprises a main machine 1, an auxiliary machine 12, a combined control switch 11 and a water distributor manifold 10, wherein the main machine 1 comprises a main controller 6, a first vector frequency converter 4, a first water injection pump motor 3 and a first pressure sensor 5, the main controller 6 is connected with the first vector frequency converter 4, the first vector frequency converter 4 is respectively connected with the first water injection pump motor 3 and the first pressure sensor 5, the first water injection pump motor 3 and the first pressure sensor 5 are respectively connected with the water distributor manifold 10, the auxiliary machine 12 comprises an auxiliary controller 18, a second vector frequency converter 15, a second water injection pump motor 14 and a second pressure sensor 16, the auxiliary controller 18 is connected with the second vector frequency converter 15, the second vector frequency converter 15 is respectively connected with the second water injection pump motor 14 and the second pressure sensor 16, the second water injection pump motor 14 and the second pressure sensor 16 are respectively connected with the water distributor manifold 10, and the combined control switch 11 is respectively connected with the auxiliary controller 18.
Example 2
As shown in fig. 1, the invention discloses a double-pump combined control water injection intelligent control system of a water injection station, which comprises a main machine 1, an auxiliary machine 12, a combined control switch 11 and a water distributor manifold 10, wherein the main machine 1 comprises a main controller 6, a first vector frequency converter 4, a first water injection pump motor 3 and a first pressure sensor 5, the main controller 6 is connected with the first vector frequency converter 4, the first vector frequency converter 4 is respectively connected with the first water injection pump motor 3 and the first pressure sensor 5, the first water injection pump motor 3 and the first pressure sensor 5 are respectively connected with the water distributor manifold 10, the auxiliary machine 12 comprises an auxiliary controller 18, a second vector frequency converter 15, a second water injection pump motor 14 and a second pressure sensor 16, the auxiliary controller 18 is connected with the second vector frequency converter 15, the second vector frequency converter 15 is respectively connected with the second water injection pump motor 14 and the second pressure sensor 16, the second water injection pump motor 14 and the second pressure sensor 16 are respectively connected with the water distributor manifold 10, and the combined control switch 11 is respectively connected with the auxiliary controller 18.
As shown in fig. 1, preferably, the host 1 further includes a first switch 8, a first display control unit 9, a first electric parameter monitoring unit 7 and a first independent fan 2, where the main controller 6 is respectively connected with the first switch 8, the first vector frequency converter 4, the first electric parameter monitoring unit 7 and the joint control switch 11, the first display control unit 9 is connected with the first switch 8, the first vector frequency converter 4 is respectively connected with the first water injection pump motor 3, the first independent fan 2 and the first pressure sensor 5, where the first water injection pump motor 3 is respectively connected with the first independent fan 2 and the water separator manifold 10, and the first pressure sensor 5 is connected with the water separator manifold 10.
Example 3
As shown in fig. 1, the invention discloses a double-pump combined control water injection intelligent control system of a water injection station, which comprises a main machine 1, an auxiliary machine 12, a combined control switch 11 and a water distributor manifold 10, wherein the main machine 1 comprises a main controller 6, a first vector frequency converter 4, a first water injection pump motor 3 and a first pressure sensor 5, the main controller 6 is connected with the first vector frequency converter 4, the first vector frequency converter 4 is respectively connected with the first water injection pump motor 3 and the first pressure sensor 5, the first water injection pump motor 3 and the first pressure sensor 5 are respectively connected with the water distributor manifold 10, the auxiliary machine 12 comprises an auxiliary controller 18, a second vector frequency converter 15, a second water injection pump motor 14 and a second pressure sensor 16, the auxiliary controller 18 is connected with the second vector frequency converter 15, the second vector frequency converter 15 is respectively connected with the second water injection pump motor 14 and the second pressure sensor 16, the second water injection pump motor 14 and the second pressure sensor 16 are respectively connected with the water distributor manifold 10, and the combined control switch 11 is respectively connected with the auxiliary controller 18.
As shown in fig. 1, preferably, the host 1 further includes a first switch 8, a first display control unit 9, a first electric parameter monitoring unit 7 and a first independent fan 2, where the main controller 6 is respectively connected with the first switch 8, the first vector frequency converter 4, the first electric parameter monitoring unit 7 and the joint control switch 11, the first display control unit 9 is connected with the first switch 8, the first vector frequency converter 4 is respectively connected with the first water injection pump motor 3, the first independent fan 2 and the first pressure sensor 5, where the first water injection pump motor 3 is respectively connected with the first independent fan 2 and the water separator manifold 10, and the first pressure sensor 5 is connected with the water separator manifold 10.
As shown in fig. 1, preferably, the auxiliary machine 12 further includes a second switch 20, a second display control unit 19, a second electric parameter monitoring unit 17 and a second independent fan 13, where the auxiliary controller 18 is respectively connected to the second switch 20, the second vector frequency converter 15, the second electric parameter monitoring unit 17 and the combined control switch 11, the second display control unit 19 is connected to the second switch 20, the second vector frequency converter 15 is respectively connected to the second water injection pump motor 14, the second independent fan 13 and the second pressure sensor 16, where the second water injection pump motor 14 is respectively connected to the second independent fan 13 and the water separator manifold 10, and the second pressure sensor 16 is connected to the water separator manifold 10.
Example 4
As shown in fig. 1, the invention discloses a double-pump combined control water injection intelligent control system of a water injection station, which comprises a main machine 1, an auxiliary machine 12, a combined control switch 11 and a water distributor manifold 10, wherein the main machine 1 comprises a main controller 6, a first vector frequency converter 4, a first water injection pump motor 3 and a first pressure sensor 5, the main controller 6 is connected with the first vector frequency converter 4, the first vector frequency converter 4 is respectively connected with the first water injection pump motor 3 and the first pressure sensor 5, the first water injection pump motor 3 and the first pressure sensor 5 are respectively connected with the water distributor manifold 10, the auxiliary machine 12 comprises an auxiliary controller 18, a second vector frequency converter 15, a second water injection pump motor 14 and a second pressure sensor 16, the auxiliary controller 18 is connected with the second vector frequency converter 15, the second vector frequency converter 15 is respectively connected with the second water injection pump motor 14 and the second pressure sensor 16, the second water injection pump motor 14 and the second pressure sensor 16 are respectively connected with the water distributor manifold 10, and the combined control switch 11 is respectively connected with the auxiliary controller 18.
As shown in fig. 1, preferably, the host 1 further includes a first switch 8, a first display control unit 9, a first electric parameter monitoring unit 7 and a first independent fan 2, where the main controller 6 is respectively connected with the first switch 8, the first vector frequency converter 4, the first electric parameter monitoring unit 7 and the joint control switch 11, the first display control unit 9 is connected with the first switch 8, the first vector frequency converter 4 is respectively connected with the first water injection pump motor 3, the first independent fan 2 and the first pressure sensor 5, where the first water injection pump motor 3 is respectively connected with the first independent fan 2 and the water separator manifold 10, and the first pressure sensor 5 is connected with the water separator manifold 10.
As shown in fig. 1, preferably, the auxiliary machine 12 further includes a second switch 20, a second display control unit 19, a second electric parameter monitoring unit 17 and a second independent fan 13, where the auxiliary controller 18 is respectively connected to the second switch 20, the second vector frequency converter 15, the second electric parameter monitoring unit 17 and the combined control switch 11, the second display control unit 19 is connected to the second switch 20, the second vector frequency converter 15 is respectively connected to the second water injection pump motor 14, the second independent fan 13 and the second pressure sensor 16, where the second water injection pump motor 14 is respectively connected to the second independent fan 13 and the water separator manifold 10, and the second pressure sensor 16 is connected to the water separator manifold 10.
Preferably, the combined control switch 11 comprises a knob, a contact and a mounting base, wherein the knob is connected with the contact and is arranged on the mounting base; the main controller 6 and the auxiliary controller 18 all comprise a control PC board, an output PC board, a controller shell, a point position indicator light and an external communication interface, wherein the main controller 6 and the auxiliary controller 18 are arranged inside the controller shell and comprise the control PC board and the output PC board, the control PC board is connected with the output PC board, and the point position indicator light and the external communication interface are arranged outside the controller shell.
Preferably, the first switch 8 and the second switch 20 each include a switch housing, a communication interface RJ45, an LED indicator, an AlarmI/O interface, and a redundant power I/O interface, where the switch housing is provided with the communication interface RJ45, the LED indicator, the AlarmI/O interface, and the redundant power I/O interface.
Preferably, the first display control unit 9 and the second display control unit 19 each include a display control housing, a display control screen, a touch pad, a power I/O interface, and a communication interface, wherein the upper end surface of the display control housing is provided with the display control screen and the touch pad, and the side wall of the display control housing is provided with the power I/O interface and the communication interface.
Preferably, the first electric parameter monitoring unit 7 and the second electric parameter monitoring unit 17 each comprise an electric parameter monitoring shell, a display control screen, a setting key, a power supply I/O interface, a CTI/O interface, a voltage input I/O interface and a communication I/O interface, wherein the upper end face of the electric parameter monitoring shell is provided with the display control screen and the setting key, and the side wall of the electric parameter monitoring shell is provided with the power supply I/O interface, the CTI/O interface, the voltage input I/O interface and the communication I/O interface.
Preferably, the first vector frequency converter 4 and the second vector frequency converter 15 each include a frequency converter housing, an IGBT, a power PC board, a control PC board, a driving board, a dc reactor, a capacitor bank, a rectifier bank, a radiator fan, an I/O interface for input and output, a control terminal I/O interface, and a Keypad display control panel, where the inside of the frequency converter housing is provided with the IGBT, the power PC board, the control PC board, the driving board, the dc reactor, the capacitor bank, the rectifier bank, and the radiator fan, where the IGBT, the power PC board, the control PC board, the driving board, the dc reactor, the capacitor bank, and the rectifier bank are sequentially connected, a Keypad display control panel is provided on an upper end surface outside the frequency converter housing, and an I/O interface for input and output, and an I/O interface for control terminal are respectively electrically connected to the control PC board; the first pressure sensor 5 and the second pressure sensor 16 each comprise a mounting base, a sensor housing, a display LED, a pressure sensing assembly and a signal output I/O interface, wherein the sensor housing is disposed at the upper end of the mounting base, the pressure sensing assembly is disposed inside the sensor housing, the display LED and the signal output I/O interface are disposed outside the sensor housing, and the display LED and the signal output I/O interface are electrically connected with the pressure sensing assembly respectively.
Example 5
As shown in fig. 1, the invention discloses a double-pump combined control water injection intelligent control system of a water injection station, which comprises a main machine 1, an auxiliary machine 12, a combined control switch 11 and a water distributor manifold 10, wherein the main machine 1 comprises a main controller 6, a first vector frequency converter 4, a first water injection pump motor 3 and a first pressure sensor 5, the main controller 6 is connected with the first vector frequency converter 4, the first vector frequency converter 4 is respectively connected with the first water injection pump motor 3 and the first pressure sensor 5, the first water injection pump motor 3 and the first pressure sensor 5 are respectively connected with the water distributor manifold 10, the auxiliary machine 12 comprises an auxiliary controller 18, a second vector frequency converter 15, a second water injection pump motor 14 and a second pressure sensor 16, the auxiliary controller 18 is connected with the second vector frequency converter 15, the second vector frequency converter 15 is respectively connected with the second water injection pump motor 14 and the second pressure sensor 16, the second water injection pump motor 14 and the second pressure sensor 16 are respectively connected with the water distributor manifold 10, and the combined control switch 11 is respectively connected with the auxiliary controller 18.
As shown in fig. 1, preferably, the host 1 further includes a first switch 8, a first display control unit 9, a first electric parameter monitoring unit 7 and a first independent fan 2, where the main controller 6 is respectively connected with the first switch 8, the first vector frequency converter 4, the first electric parameter monitoring unit 7 and the joint control switch 11, the first display control unit 9 is connected with the first switch 8, the first vector frequency converter 4 is respectively connected with the first water injection pump motor 3, the first independent fan 2 and the first pressure sensor 5, where the first water injection pump motor 3 is respectively connected with the first independent fan 2 and the water separator manifold 10, and the first pressure sensor 5 is connected with the water separator manifold 10.
As shown in fig. 1, preferably, the auxiliary machine 12 further includes a second switch 20, a second display control unit 19, a second electric parameter monitoring unit 17 and a second independent fan 13, where the auxiliary controller 18 is respectively connected to the second switch 20, the second vector frequency converter 15, the second electric parameter monitoring unit 17 and the combined control switch 11, the second display control unit 19 is connected to the second switch 20, the second vector frequency converter 15 is respectively connected to the second water injection pump motor 14, the second independent fan 13 and the second pressure sensor 16, where the second water injection pump motor 14 is respectively connected to the second independent fan 13 and the water separator manifold 10, and the second pressure sensor 16 is connected to the water separator manifold 10.
Preferably, the combined control switch 11 comprises a knob, a contact and a mounting base, wherein the knob is connected with the contact and is arranged on the mounting base; the main controller 6 and the auxiliary controller 18 all comprise a control PC board, an output PC board, a controller shell, a point position indicator light and an external communication interface, wherein the main controller 6 and the auxiliary controller 18 are arranged inside the controller shell and comprise the control PC board and the output PC board, the control PC board is connected with the output PC board, and the point position indicator light and the external communication interface are arranged outside the controller shell.
Preferably, the first switch 8 and the second switch 20 each include a switch housing, a communication interface RJ45, an LED indicator, an AlarmI/O interface, and a redundant power I/O interface, where the switch housing is provided with the communication interface RJ45, the LED indicator, the AlarmI/O interface, and the redundant power I/O interface.
Preferably, the first display control unit 9 and the second display control unit 19 each include a display control housing, a display control screen, a touch pad, a power I/O interface, and a communication interface, wherein the upper end surface of the display control housing is provided with the display control screen and the touch pad, and the side wall of the display control housing is provided with the power I/O interface and the communication interface.
Preferably, the first electric parameter monitoring unit 7 and the second electric parameter monitoring unit 17 each comprise an electric parameter monitoring shell, a display control screen, a setting key, a power supply I/O interface, a CTI/O interface, a voltage input I/O interface and a communication I/O interface, wherein the upper end face of the electric parameter monitoring shell is provided with the display control screen and the setting key, and the side wall of the electric parameter monitoring shell is provided with the power supply I/O interface, the CTI/O interface, the voltage input I/O interface and the communication I/O interface.
Preferably, the first vector frequency converter 4 and the second vector frequency converter 15 each include a frequency converter housing, an IGBT, a power PC board, a control PC board, a driving board, a dc reactor, a capacitor bank, a rectifier bank, a radiator fan, an I/O interface for input and output, a control terminal I/O interface, and a Keypad display control panel, where the inside of the frequency converter housing is provided with the IGBT, the power PC board, the control PC board, the driving board, the dc reactor, the capacitor bank, the rectifier bank, and the radiator fan, where the IGBT, the power PC board, the control PC board, the driving board, the dc reactor, the capacitor bank, and the rectifier bank are sequentially connected, a Keypad display control panel is provided on an upper end surface outside the frequency converter housing, and an I/O interface for input and output, and an I/O interface for control terminal are respectively electrically connected to the control PC board; the first pressure sensor 5 and the second pressure sensor 16 each comprise a mounting base, a sensor housing, a display LED, a pressure sensing assembly and a signal output I/O interface, wherein the sensor housing is disposed at the upper end of the mounting base, the pressure sensing assembly is disposed inside the sensor housing, the display LED and the signal output I/O interface are disposed outside the sensor housing, and the display LED and the signal output I/O interface are electrically connected with the pressure sensing assembly respectively.
As shown in fig. 1-2, the invention discloses an intelligent control method for double-pump combined control water injection of a water injection station, which comprises the following steps:
step one, electrifying a double-pump joint control water injection intelligent control system of a water injection station, performing self-checking on the system, and alarming to enter a ready-to-start state if all components have no faults;
step two, after the system self-checking, firstly judging the working state of the combined control switch 11, and if the combined control switch 11 is in an off state, enabling the main machine 1 and the auxiliary machine 12 to enter an independent running state; if the combination control switch 11 is in the closed state, the main unit 1 and the sub-unit 12 enter the combination control operation state.
Step three, when the combined control switch 11 is in a closed state, the host 1 is started to operate, if the operating frequency of the host 1 reaches or exceeds 50Hz, the actual operating pressure of the first water injection pump motor 3 is smaller than the set target pressure, and the operating time exceeds 30min, at this time, the main controller 6 controls the auxiliary controller 18 through the combined control switch 11 to enable the auxiliary machine 12 to be started automatically, otherwise, the system enters a single machine independent operating state of the host 1;
step four, the auxiliary machine 12 is started, the system enters a double-pump combined control state, and the motor 3/the first water injection pump is started according to the set target pressureThe actual operating pressure of the two water injection pump motors 14 is automatically adjusted until the pressure value P of the first pressure sensor 5 Actual practice is that of With the target pressure P set by the first display control unit 9 Setting up Equal, and the frequency value f of the first vector converter 4 of the host 1 1 Frequency value f of second vector converter 15 of auxiliary machine 12 2 Equivalently, the system enters a steady operation state, namely:and is also provided with；
Step five, after the system enters the steady operation state, if the first vector converter 4 frequency f of the host 1 1 If the frequency is smaller than 40Hz, the first independent fan 2 and the second independent fan 13 are started, so that the heat dissipation performance of the first water injection pump motor 3 and the second water injection pump motor 14 is not reduced under low frequency, and the service life of the motors is prolonged;
step six, when the injection allocation of the water injection station changes or the set target pressure changes, if the pressure value of the first pressure sensor 5 is greater than the set target pressure value, and the frequency values of the first vector frequency converter 4 and the second vector frequency converter 15 are both smaller than 25Hz, the auxiliary machine 12 is closed at this time, the main machine 1 single machine working state is entered, the system is automatically adjusted to reach a new stable state, and the first water injection pump motor 3 and the second water injection pump motor 14 are prevented from being burnt due to insufficient fan heat under the ultralow frequency, namely:and is also provided with；
Preferably, the main machine 1 and the auxiliary machine 12 in the third step are started by adopting a vector control pressure full-load soft start mode, the start time is set to 40s, and the maximum current impact of starting is ensured to be smaller than rated currents of the first water injection pump motor 3 and the second water injection pump motor 14.
The linked switch 11 is used as a master switch for turning on or off the linked function.
The main controller 6 and the auxiliary controller 18 are used for completing the collection of peripheral signals, the control of the start and stop of the water injection pump motor, the start/operation protection of the water injection pump motor and the generation and execution of linkage control commands.
The function of the switch is to complete the data transmission between the main controller 18 and the display control unit and to interface with the oilfield digital platform communication interface.
The display control unit is used for realizing the monitoring of the technical parameters of the motor of the on-site water injection pump, the setting of the control parameters and the storage of alarm information.
The electric parameter monitoring unit is used for measuring electric quantity parameters of the on-site water injection pump motor, wherein the electric quantity parameters mainly comprise voltage, current, electric energy, power factor, power and the like, and in addition, the real-time value of the measured electric quantity is transmitted to the main/auxiliary controller 18 for processing and is used for remote storage and monitoring.
The vector frequency converter has the function of realizing the on-load starting and voltage-stabilizing water injection function of the on-site water injection pump motor.
The pressure sensor is used for realizing real-time pressure detection of the water injection main pipe, converting real-time pressure of 0-25 mpa into a current signal of 4-20 mpa, and transmitting the current signal to the main/auxiliary controller 18 for pressure control and system protection.
The working principle of the invention is as follows:
the invention has 3 operation modes of double-pump combined control operation, double-pump independent operation and single-pump independent operation, when the combined control switch 11 is in an off state, the system is in the double-pump independent operation mode; when the combined control switch 11 is in a closed state, the system is in a double-pump combined control mode; when one of the pumps is closed, the other pump is in an independent running state, a linkage control mode that the host 1 controls the auxiliary machine 12 to run is adopted, when the linkage control switch 11 is in a closed state, the frequency signal of the second vector frequency converter 15 of the auxiliary machine 12 and the signal of the second pressure sensor 16 are controlled by the signals of the first vector frequency converter 4 and the first pressure sensor 5 of the host 1, whether the first independent fan 2 and the second independent fan 13 in the water injection station double-pump linkage control intelligent system run or not is determined by the running frequency of the first vector frequency converter 4 and the second vector frequency converter 15, and when the running frequency is lower than 40Hz, the first independent fan 2 and the second independent fan 13 start to run, so that the good heat dissipation performance of a water injection pump motor is ensured, and the purpose of saving energy is achieved.
The invention adopts the mode of controlling the auxiliary machine 12 by the main machine 1, automatically performs the operation and the cutting of the auxiliary machine 12 according to the water injection condition change, ensures that the normal operation of the main machine 1 and the auxiliary machine 12 keeps the same frequency operation, ensures the lowest energy consumption of a water injection system, also avoids the problems of electricity burning caused by excessive heating of a water injection motor operated at low frequency when two water injection pumps are operated at different frequencies, simultaneously realizes the double-pump combined control automatic water injection of the water injection station, improves the automatic control degree of the water injection station, realizes the stable operation of the water injection system, saves energy and reduces consumption, and realizes the automatic water injection unattended operation of the water injection station.
The invention solves the problems that when a plurality of water injection pump motors of one water injection station work and two vector frequency converters work simultaneously, the two water injection pump motors are ensured to work cooperatively at the same frequency, the energy consumption of a frequency conversion system is ensured to be the lowest, and the system is optimized; meanwhile, the automatic switching device has 3 operation modes of double pump combined control, double pump independence and single pump independence, and is used for automatic switching; the intelligent water injection control system has the advantages of reasonable design, simple structure, convenient operation and low cost, and greatly improves the working efficiency.
While the preferred embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Many other changes and modifications may be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (4)
1. The control method of the double-pump combined control water injection intelligent control system of the water injection station is characterized by comprising the following steps of:
step one, electrifying a double-pump joint control water injection intelligent control system of a water injection station, performing self-checking on the system, and alarming to enter a ready-to-start state if all components have no faults;
step two, after the system self-checking, firstly judging the working state of the combined control switch, and if the combined control switch is in an off state, enabling the main machine and the auxiliary machine to enter an independent running state; if the combined control switch is in a closed state, the main machine and the auxiliary machine enter a combined control running state.
Step three, when the combined control switch is in a closed state, the host machine is started to operate, if the operating frequency of the host machine reaches or exceeds 50Hz, the actual operating pressure of the first water injection pump motor is smaller than the set target pressure, and the operating time exceeds 30min, at the moment, the main controller controls the auxiliary controller to automatically start the auxiliary machine through the combined control switch, otherwise, the system enters a stand-alone operating state of the host machine;
step four, starting the auxiliary machine, enabling the system to enter a double-pump combined control state, and automatically adjusting according to the set target pressure and the actual running pressure of the first water injection pump motor/the second water injection pump motor until the pressure value P of the first pressure sensor Actual practice is that of With the target pressure P set by the first display control unit Setting up Equal and the frequency value f of the first vector frequency converter of the host 1 Frequency value f of second vector frequency converter of auxiliary machine 2 Equivalently, the system enters a steady operation state, namely:and->；
Step five, after the system enters a stable operation state, if the first vector frequency converter frequency f of the host machine 1 If the frequency is smaller than 40Hz, the first independent fan and the second independent fan are started, so that the heat dissipation performance of the first water injection pump motor and the second water injection pump motor is not reduced under low frequency, and the service life of the motors is prolonged;
step six, when the set target pressure of the water injection station is changed, if the pressure value of the first pressure sensor is larger than the set target pressure value, and the frequency values of the first vector frequency converter and the second vector frequency converter are smaller than 25Hz, closing the auxiliary machine at the moment, entering the working state of a main machine single machine, and automatically adjusting the systemThe new steady state is reached, and the fan heat is not enough and burn out at the ultralow frequency of first water injection pump motor and second water injection pump motor is avoided, namely:and->；
The intelligent control system for double-pump combined control water injection of the water injection station comprises a host, an auxiliary machine, a combined control switch and a water distributor manifold, wherein the host comprises a main controller, a first vector frequency converter, a first water injection pump motor and a first pressure sensor, the main controller is connected with the first vector frequency converter, the first vector frequency converter is respectively connected with the first water injection pump motor and the first pressure sensor, the first water injection pump motor and the first pressure sensor are respectively connected with the water distributor manifold, the auxiliary machine comprises an auxiliary controller, a second vector frequency converter, a second water injection pump motor and a second pressure sensor, the auxiliary controller is connected with the second vector frequency converter, the second vector frequency converter is respectively connected with the second water injection pump motor and the second pressure sensor, the second water injection pump motor and the second pressure sensor are respectively connected with the water distributor manifold, and the combined control switch is respectively connected with the main controller and the auxiliary controller;
the host computer still includes first switch, first apparent accuse unit, first electricity and send out the control unit and first independent fan, wherein main control unit is connected with first switch, first vector converter, first electricity send out the control unit and allies oneself with the control switch respectively, first apparent accuse unit connects first switch, first vector converter connects first water injection pump motor, first independent fan and first pressure sensor respectively, wherein first water injection pump motor connects first independent fan and water knockout drum manifold respectively, first pressure sensor connects water knockout drum manifold;
the auxiliary machine further comprises a second switch, a second display control unit, a second electric parameter monitoring unit and a second independent fan, wherein the auxiliary controller is respectively connected with the second switch, a second vector frequency converter, the second electric parameter monitoring unit and the combined control switch, the second display control unit is connected with the second switch, the second vector frequency converter is respectively connected with a second water injection pump motor, the second independent fan and a second pressure sensor, the second water injection pump motor is respectively connected with the second independent fan and a water separator manifold, and the second pressure sensor is connected with the water separator manifold;
the combined control switch comprises a knob, a contact and a mounting base, wherein the knob is connected with the contact and is arranged on the mounting base; the main controller and the auxiliary controller comprise a control PC board, an output PC board, a controller shell, a point position indicator lamp and an external communication interface, wherein the controller shell of the main controller and the auxiliary controller internally comprises the control PC board and the output PC board, the control PC board is connected with the output PC board, and the point position indicator lamp and the external communication interface are arranged outside the controller shell;
the first display control unit and the second display control unit comprise a display control shell, a display control screen, a touch pad, a power I/O interface and a communication interface, wherein the upper end face of the display control shell is provided with the display control screen and the touch pad, and the side wall of the display control shell is provided with the power I/O interface and the communication interface.
2. The control method of the intelligent control system for double-pump combined control water injection of the water injection station according to claim 1, wherein the control method comprises the following steps: and in the third step, the main machine and the auxiliary machine are started in a vector control full-load soft start mode with pressure, the start time is set to 40s, and the maximum current impact of starting is ensured to be smaller than rated currents of the first water injection pump motor and the second water injection pump motor.
3. The control method of the intelligent control system for double-pump combined control water injection of the water injection station according to claim 1, wherein the control method comprises the following steps: the first switch and the second switch comprise a switch shell, a communication interface RJ45, an LED indicator light, an AlarmI/O interface and a redundant power supply I/O interface, wherein the switch shell is provided with the communication interface RJ45, the LED indicator light, the AlarmI/O interface and the redundant power supply I/O interface.
4. The control method of the intelligent control system for double-pump combined control water injection of the water injection station according to claim 1, wherein the control method comprises the following steps: the first electric parameter monitoring unit and the second electric parameter monitoring unit comprise an electric parameter monitoring shell, a display control screen, a setting key, a power supply I/O interface, a CTI/O interface, a voltage input I/O interface and a communication I/O interface, wherein the display control screen and the setting key are arranged on the upper end face of the electric parameter monitoring shell, and the power supply I/O interface, the CTI/O interface, the voltage input I/O interface and the communication I/O interface are arranged on the side wall of the electric parameter monitoring shell.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000058584A (en) * | 2000-02-19 | 2000-10-05 | 정현오 | Wireless Automation Water Level Control System |
| RU115842U1 (en) * | 2011-12-14 | 2012-05-10 | Федеральное государственное бюджетное образовательное учреждение Высшего профессионального образования Астраханский государственный технический университет (ФГБОУ ВПО АГТУ) | PUMP STATION AUTOMATIC CONTROL SYSTEM |
| CN105278352A (en) * | 2014-05-28 | 2016-01-27 | 株洲变流技术国家工程研究中心有限公司 | Oil field water injection automatic control system and method thereof |
| CN105471348A (en) * | 2015-12-19 | 2016-04-06 | 中国石油天然气股份有限公司 | Squirrel-cage-shaped motor driven water injection pump load start pressure-stabilizing water injection apparatus |
-
2018
- 2018-11-15 CN CN201811360390.8A patent/CN109441791B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000058584A (en) * | 2000-02-19 | 2000-10-05 | 정현오 | Wireless Automation Water Level Control System |
| RU115842U1 (en) * | 2011-12-14 | 2012-05-10 | Федеральное государственное бюджетное образовательное учреждение Высшего профессионального образования Астраханский государственный технический университет (ФГБОУ ВПО АГТУ) | PUMP STATION AUTOMATIC CONTROL SYSTEM |
| CN105278352A (en) * | 2014-05-28 | 2016-01-27 | 株洲变流技术国家工程研究中心有限公司 | Oil field water injection automatic control system and method thereof |
| CN105471348A (en) * | 2015-12-19 | 2016-04-06 | 中国石油天然气股份有限公司 | Squirrel-cage-shaped motor driven water injection pump load start pressure-stabilizing water injection apparatus |
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