CN110331967A - Control and protection system and method for on-load starting of high-pressure water injection pump - Google Patents
Control and protection system and method for on-load starting of high-pressure water injection pump Download PDFInfo
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- CN110331967A CN110331967A CN201910502426.XA CN201910502426A CN110331967A CN 110331967 A CN110331967 A CN 110331967A CN 201910502426 A CN201910502426 A CN 201910502426A CN 110331967 A CN110331967 A CN 110331967A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 238000002347 injection Methods 0.000 title claims abstract description 87
- 239000007924 injection Substances 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 27
- 238000012986 modification Methods 0.000 claims abstract description 6
- 230000004048 modification Effects 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000002332 oil field water Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- 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
-
- 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
-
- 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
- F04B51/00—Testing machines, pumps, or pumping installations
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention belongs to the technical field of oilfield water injection, and particularly relates to a control and protection system and method for on-load starting of a high-pressure water injection pump. According to the invention, through the organic arrangement of the input power supply, the strong cold air tail fan, the vector control output unit, the high-pressure water injection pump motor, the connection vector control output unit, the voltage sampling unit, the control and protection unit, the pressure fuzzy controller and the parameter setting unit, the four steps of signal acquisition and transmission, control parameter modification, water injection pump operation frequency and output voltage control and strong cold air tail fan start and stop control are adopted, the water injection pump starting process is simplified, the voltage fluctuation resistance of the water injection system is improved, the accurate control of the water injection pressure is ensured, the parameter manual adjustment mode is required when the control mode is switched is changed, the problem of overhigh temperature rise when the high-pressure water injection pump motor operates at low frequency is solved, and the purposes of stable operation of the water injection system, energy conservation and consumption reduction.
Description
Technical field
The invention belongs to oil-field flooding technical fields, and in particular to a kind of high pressure water-injection pump band carries the control protection system of starting
System and method.
Background technique
In oil field development production process, frequently with manually supplementing and keep formation pressure to the method for reservoir water,
To improve oil recovery efficiency, it is therefore desirable to which flood pattern keeps stable water injection rate and water injection pressure, and water injection control system is as note
The core part of water system, operation stability play very important effect.Water injecting pump is mostly power frequency start and stop and operation at present
Control, rush of current is larger on startup for motor in order to prevent, avoids damage water filling mechanical system and hydraulic pipeline system, needs
First to water filling loop pressure release, restart water injecting pump, adjusts water injection pressure to target value finally by manual adjustment return valve, it should
The problems such as method is there are energy dissipation, water-injection efficiency is low, manual operation danger coefficient is high, manual adjustment pressure is inaccurate；Work as electricity
Net voltage instability timing will force water injecting pump out of service or keep motor continuous service, force water injecting pump out of service greatly
Water-injection efficiency is influenced, influences to be safely operated if keeping motor continuous service, motor will be burnt out when serious.
For the system of the start and stop of industrial frequency control water injecting pump and operation, in addition to the above-mentioned problems, there is also water injection pressures without closed loop
The problems such as control, low reactance voltage fluctuation ability, needs to improve the control of high oil field water injection pump and defencive function for this problem.
Summary of the invention
The present invention provides a kind of high pressure water-injection pump band carry starting Control protection system and method, the purpose of the present invention it
One is to provide a kind of Control protection system of the high high pressure water-injection pump of closed-loop control water injection pressure, reactance voltage fluctuation ability and side
Method；The second object of the present invention is to provide one kind can even running, the Control protection system of energy-saving high pressure water-injection pump
And method；The third object of the present invention is to provide a kind of high pressure water-injection pump Control protection system that can accurately control water injection pressure
And method.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of high pressure water-injection pump band carries the Control protection system of starting, including
High pressure water injection pump motor；
Strong cold wind tail fan, Qiang Lengfeng tail fan is in high pressure water-injection pump outside motor and the setting of face high pressure water injection pump motor；
Vector controlled output unit connects high pressure water injection pump motor 6, for controlling the strong cold wind tail of high pressure water injection pump motor
The start and stop of fan；
Voltage sampling unit is connect with vector controlled output unit electric signal, for vector controlled output unit input electricity
The acquisition and conveying of pressure；
Control and protection unit is connect, for receiving electricity with vector controlled output unit and voltage sampling unit electric signal
The data of pressure sampling unit acquisition simultaneously control the DC voltage value in vector controlled output unit；
Pressure Fuzzy controller is connect with control and protection unit electric signal, for passing to external water injecting pump water injection pressure
Sensor signal is acquired and sends control signals to control and protection unit；
Parameter setting unit is connect with control and protection unit electric signal, for modifying in control and protection unit automatically
Control parameter；
Input power, input power be used for for vector controlled output unit, voltage sampling unit, control and protection unit,
Pressure Fuzzy controller, parameter setting unit and high pressure water injection pump motor provide power source.
The voltage sampling unit using model DMP-C530 Kind of Multifunctional Power Meter.
The input power is 380V.
The model FLC180V10 that the Pressure Fuzzy controller uses.
The strong air-cooler tail fan model QLFJ100-4.
The voltage sampling unit using model DMP-C530 Kind of Multifunctional Power Meter.
A kind of high pressure water-injection pump band carries the application method of the Control protection system started, includes the following steps
Step 1: the acquisition and conveying of signal
Voltage sampling unit is acquired the input voltage of vector controlled output unit, and is sent by serial communication to control
System and protection location；
Pressure Fuzzy controller, which is acquired external water injecting pump water injection pressure sensor signal and calculates motor, increases frequency amount
Or amount of frequency redution, and will increase frequency amount or amount of frequency redution signal be sent to control and protection unit；
Step 2: modification control parameter
Parameter setting unit modifies the control parameter in control and protection unit according to mode selection switch state automatically；
Step 3: control water injecting pump running frequency and output voltage
Control and protection unit is transferred to vector controlled output unit for signal is controlled, implement to water injecting pump running frequency and
The control of output voltage；
Step 4: strong cold wind tail fan start and stop are controlled
Output frequency size by controlling vector controlled output unit in step 4 controls the strong cold wind motor tail of external belt
The start and stop of fan.
The utility model has the advantages that
The invention has the following advantages:
1, the present invention avoids complicated start and stop water injection electric and water filling valve group operating process with starting technique is carried, and realizes
Water-injection station zero flows back, and reduces water filling valve group because of damage caused by frequently switching on the components such as return valve, extends the use of equipment
Service life.
2, the present invention uses vector controlled to high pressure water injection pump motor, solves the phase asynchronous electricity of squirrel-cage in the prior art
Output torque deficiency problem when machine low-frequency operation reduces rush of current when starting, guarantees that water injecting pump band carries the reliability of starting.
3, modularization of the invention setting can realize the unattended state of water-injection station, significantly in conjunction with remote monitoring platform
The labor intensity for reducing field maintenance person, avoids high pressure bring security risk completely.
4, the setting of fuzzy controller of the present invention can pass through fuzzy control knowledge according to water injection pressure target set point
Library calculates suitable motor and increases amount of frequency redution control water filling pump discharge pressure, realizes that water injection pressure accurately controls.Work as water injection pressure
When too low or excessively high, stop water filling pump operation.
5, voltage sampling unit of the invention has the function of that voltage sample, stall prevent and low-voltage protection, when power grid electricity
When pressure fluctuation, output voltage can be controlled and changed in a certain range, prevent from burning motor because of overtension.
6, control and protection unit of the invention realizes automatic setting operating parameter.
7, high pressure water injection pump motor of the invention configuration is not only internal is arranged coaxial tail fan and adds external strong cold wind tail fan,
Can be in water injecting pump low-frequency operation, motor coaxle tail fan and external strong cold wind tail fan are run simultaneously, take away the heat of motor generation
Amount；When water injecting pump high frequency is run, coaxial tail fan operation, external strong cold wind tail fan stops, and guarantees temperature rise when motor low-frequency operation
In the reasonable scope and play energy-saving effect.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is that the present invention constitutes schematic diagram；
Fig. 2 is flow chart of the invention.
In figure, 1- voltage sampling unit；2- Pressure Fuzzy controller；3- parameter setting unit；4- control and protection unit；
5- vector controlled output unit；6- high pressure water injection pump motor；7- input power.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Embodiment one:
A kind of high pressure water-injection pump band according to figure 1 carries the Control protection system of starting, including
High pressure water injection pump motor 6；
Strong cold wind tail fan, Qiang Lengfeng tail fan is in 6 outside of high pressure water injection pump motor and the setting of face high pressure water injection pump motor 6；
Vector controlled output unit 5 connects high pressure water injection pump motor 6, for controlling the strong cold wind of high pressure water injection pump motor 6
The start and stop of tail fan；
Voltage sampling unit 1 is connect with 5 electric signal of vector controlled output unit, is inputted for vector controlled output unit 5
The acquisition and conveying of voltage；
Control and protection unit 4 is connect, for receiving with vector controlled output unit 5 and 1 electric signal of voltage sampling unit
The data of the acquisition of voltage sampling unit 1 simultaneously control the DC voltage value in vector controlled output unit 5；
Pressure Fuzzy controller 2 is connect with 4 electric signal of control and protection unit, for external water injecting pump water injection pressure
Sensor signal is acquired and sends control signals to control and protection unit 4；
Parameter setting unit 3 is connect with 4 electric signal of control and protection unit, for modifying control and protection unit 4 automatically
In control parameter；
Input power 7, input power 7 are used to be vector controlled output unit 5, voltage sampling unit 1, control and protection list
Member 4, Pressure Fuzzy controller 2, parameter setting unit 3 and high pressure water injection pump motor 6 provide power source.
The preferably described voltage sampling unit using model DMP-C530 Kind of Multifunctional Power Meter.
Preferably the input power 7 is 380V.
The model FLC180V10 of the preferably described Pressure Fuzzy controller use.
The preferably strong air-cooler tail fan model QLFJ100-4.
The preferably described voltage sampling unit using model DMP-C530 Kind of Multifunctional Power Meter.
In actual use, voltage sampling unit 1 is acquired the input voltage of vector controlled output unit 5, and leads to
Serial communication is crossed to send to control and protection unit 4, for controlling the DC BUS voltage value in vector controlled output unit 5, thus
Limit the output voltage of vector controlled output unit 5.Pressure Fuzzy controller 2 senses the water injecting pump water injection pressure of the prior art
Device signal is acquired, and fuzzy control knowledge base calculates high pressure water injection pump motor increasing frequency amount or frequency reducing according to prior art
Amount, is sent to control and protection unit 4 for the control signal.Parameter setting unit 3 is repaired automatically according to mode selection switch state
Change the control parameter in control and protection unit 4.Control and protection unit 4 controls water injecting pump by vector controlled output unit 5
Running frequency and output voltage.Control and protection unit 4 controls external according to the output frequency size of vector controlled output unit 5
The start and stop of strong air-cooler tail fan 6.
Strong cold wind tail fan outside high pressure water injection pump motor 6, so that the cooling effect of high pressure water injection pump motor 6 is more preferable, and
Can preferably guarantee normal operation of the invention, the present embodiment using prior art model QLFJ100-4 strong cold wind
Tail fan, cost is relatively low.Power supply 7 is the 380V normal operation of the invention also for guarantee.
In the present embodiment, voltage sampling unit, parameter setting unit, control and protection unit, vector controlled output unit
With external strong air-cooler tail fan be all made of be the prior art equipment, the parameter setting unit is using model
The module of DVP16SP, control and protection unit model DVP20SX211R, vector controlled output unit model
CPC2200C43A。
Embodiment two:
A kind of high pressure water-injection pump band as shown in Figure 2 carries the application method of the Control protection system of starting, including walks as follows
Suddenly
Step 1: the acquisition and conveying of signal
Voltage sampling unit 1 is acquired the input voltage of vector controlled output unit 5, and by serial communication send to
Control and protection unit 4；
Pressure Fuzzy controller 2, which is acquired external water injecting pump water injection pressure sensor signal and calculates motor, increases frequency amount
Or amount of frequency redution, and will increase frequency amount or amount of frequency redution signal be sent to control and protection unit 4；
Step 2: modification control parameter
Parameter setting unit 3 modifies the control parameter in control and protection unit 4 according to mode selection switch state automatically；
Step 3: control water injecting pump running frequency and output voltage
Control and protection unit 4 is transferred to vector controlled output unit 5 for signal is controlled, and implements to water injecting pump running frequency
With the control of output voltage；
Step 4: strong cold wind tail fan start and stop are controlled
Output frequency size by controlling vector controlled output unit 5 in step 4 controls the strong cold wind motor tail of external belt
The start and stop of fan.
In actual use, the present invention passes through the acquisition and conveying of signal, modification control parameter, control water filling pump operation frequency
Rate and output voltage and strong four steps of cold wind tail fan start and stop of control, simplify operating process, realize the reflux of water-injection station zero, subtract
Lack water filling valve group because of damage caused by frequently switching on the components such as return valve, extends the service life of equipment.
In conclusion fuzzy controller is arranged in the present invention, fuzzy controller passes through existing according to water injection pressure target set point
There is the fuzzy control knowledge base of technology, calculate suitable high pressure water injection pump motor and increase amount of frequency redution control water filling pump discharge pressure,
Realize that water injection pressure accurately controls.When water injection pressure is too low or excessively high, stop water filling pump operation.The present invention is by configuring voltage
Sampling unit 1 can control output voltage and change in a certain range when voltage ripple of power network, prevent from burning because of overtension
Ruin high pressure water injection pump motor.Parameter of the present invention can be set automatically according to control model.It is configured outside high pressure water injection pump motor external strong
Air-cooler tail fan, when water injecting pump low-frequency operation, the coaxial tail fan and external strong air-cooler tail fan in high pressure water injection pump motor are same
Shi Yunhang；When water injecting pump high frequency is run, coaxial tail fan operation, external strong air-cooler tail fan stops, and guarantees high pressure water injection pump motor
Temperature rise when low-frequency operation in the reasonable scope and plays energy-saving effect.The present invention, integrated power-saving rate can reach
20%.This invention simplifies water injecting pump startup process, flood pattern reactance voltage fluctuation ability is improved, guarantees that water injection pressure is accurately controlled
When making, the mode that parameter need to manually adjust when changing control mode switch, while solving high pressure water injection pump motor low-frequency operation
The excessively high problem of temperature rise, realize flood pattern even running, energy-saving purpose.The present invention changes traditional squirrel-cage three-phase
Asynchronous machine output electric property curve increases motor output torque, can meet the function that high load is exported in motor large torque, i.e., high
Pressure injection pump variable frequency band carries starting；The temperature change that motor is controlled by the strong cold wind tail fan of outside motor, protects motor in low frequency
Lower normal operation, that is, reach high pressure water-injection pump motor control and protection system.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.The component and structure that the present embodiment does not describe in detail belong to this
The well-known components and common structure or conventional means of industry, do not describe one by one here.
Claims (7)
1. the Control protection system that a kind of high pressure water-injection pump band carries starting, it is characterised in that: including
High pressure water injection pump motor (6)；
Strong cold wind tail fan, Qiang Lengfeng tail fan is external in high pressure water injection pump motor (6) and face high pressure water injection pump motor (6) is arranged；
Vector controlled output unit (5) connects high pressure water injection pump motor (6), for controlling the strong cold of high pressure water injection pump motor (6)
The start and stop of wind tail fan；
Voltage sampling unit (1) is connect with vector controlled output unit (5) electric signal, defeated for vector controlled output unit (5)
Enter the acquisition and conveying of voltage；
Control and protection unit (4) is connect, for connecing with vector controlled output unit (5) and voltage sampling unit (1) electric signal
By voltage sampling unit (1) acquire data and control the DC voltage value in vector controlled output unit (5)；
Pressure Fuzzy controller (2) is connect with control and protection unit (4) electric signal, for external water injecting pump water injection pressure
Sensor signal is acquired and sends control signals to control and protection unit (4)；
Parameter setting unit (3) is connect with control and protection unit (4) electric signal, for modifying control and protection unit automatically
(4) control parameter in；
Input power (7), input power (7) are used for as vector controlled output unit (5), voltage sampling unit (1), control and protect
It protects unit (4), Pressure Fuzzy controller (2), parameter setting unit (3) and high pressure water injection pump motor (6) and power source is provided.
2. the Control protection system that a kind of high pressure water-injection pump band as described in claim 1 carries starting, it is characterised in that: described
Voltage sampling unit using model DMP-C530 Kind of Multifunctional Power Meter.
3. the Control protection system that a kind of high pressure water-injection pump band as described in claim 1 carries starting, it is characterised in that: described
Input power (7) is 380V.
4. the Control protection system that a kind of high pressure water-injection pump band as described in claim 1 carries starting, it is characterised in that: described
The model FLC180V10 that Pressure Fuzzy controller uses.
5. the Control protection system that a kind of high pressure water-injection pump band as described in claim 1 carries starting, it is characterised in that: described
Strong air-cooler tail fan model QLFJ100-4.
6. the Control protection system that a kind of high pressure water-injection pump band as described in claim 1 carries starting, it is characterised in that: described
Voltage sampling unit using model DMP-C530 Kind of Multifunctional Power Meter.
7. the application method that a kind of high pressure water-injection pump band carries the Control protection system of starting, it is characterised in that: include the following steps
Step 1: the acquisition and conveying of signal
Voltage sampling unit (1) is acquired the input voltage of vector controlled output unit (5), and by serial communication send to
Control and protection unit (4)；
Pressure Fuzzy controller (2) external water injecting pump water injection pressure sensor signal is acquired and calculate motor increase frequency amount or
Amount of frequency redution, and will increase frequency amount or amount of frequency redution signal be sent to control and protection unit (4)；
Step 2: modification control parameter
Parameter setting unit (3) modifies the control parameter in control and protection unit (4) according to mode selection switch state automatically；
Step 3: control water injecting pump running frequency and output voltage
Control and protection unit (4) is transferred to signal is controlled vector controlled output unit (5), and is implemented to water injecting pump running frequency
With the control of output voltage；
Step 4: strong cold wind tail fan start and stop are controlled
Output frequency size by controlling vector controlled output unit (5) in step 4 controls the strong cold wind motor tail fan of external belt
Start and stop.
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|---|---|---|---|
| CN201910502426.XA CN110331967A (en) | 2019-06-11 | 2019-06-11 | Control and protection system and method for on-load starting of high-pressure water injection pump |
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| CN201910502426.XA CN110331967A (en) | 2019-06-11 | 2019-06-11 | Control and protection system and method for on-load starting of high-pressure water injection pump |
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