CN105471348A - Squirrel-cage motor driven water injection pump load starting voltage-stabilizing water injection device - Google Patents
Squirrel-cage motor driven water injection pump load starting voltage-stabilizing water injection device Download PDFInfo
- Publication number
- CN105471348A CN105471348A CN201510950797.6A CN201510950797A CN105471348A CN 105471348 A CN105471348 A CN 105471348A CN 201510950797 A CN201510950797 A CN 201510950797A CN 105471348 A CN105471348 A CN 105471348A
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- China
- Prior art keywords
- water injection
- cage motor
- injection pump
- frequency converter
- squirrel
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000002347 injection Methods 0.000 title claims abstract description 68
- 239000007924 injection Substances 0.000 title claims abstract description 68
- 241000555745 Sciuridae Species 0.000 claims description 42
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention provides a squirrel-cage motor driven water injection pump loaded starting voltage-stabilizing water injection device, which comprises a water injection pump, a squirrel-cage motor for driving the water injection pump, an intelligent vector frequency converter, a redundant pressure controller and a pressure sensor. According to the invention, the intelligent vector frequency converter is adopted to carry out magnetic field guiding vector control on the squirrel-cage motor, so that the output torque of the squirrel-cage motor at low speed is improved, the water injection pump is started with load, and the starting current is small; the water injection pressure change is monitored in real time through a pressure sensor, a redundant pressure controller performs closed-loop control on a water injection pressure signal and the frequency output of an intelligent vector frequency converter, and the water injection pressure is adjusted by changing the rotating speed of a motor; an independent fan is added at the tail of the squirrel-cage motor, so that the air exhaust quantity of the squirrel-cage motor at low speed is increased, and the temperature rise of the motor is reduced.
Description
Technical field
The invention belongs to oil-field flooding technical field, the water injection pump band being specifically related to the dragging of a kind of squirrel cage motor carries and starts voltage stabilizing water filling device.
Background technology
In Changqing oilfields Development and Production process, water filling pressure charging system is the important measures ensureing that water injection rate completes, and generally adopts squirrel cage motor to drag plunger type water injection pump at present and carries out supercharging.In the injecting process, owing to affecting by factors such as the change of water injection well well number, injection allocation amount dynamic conditioning, often there is water-injection station injection allocation amount and the unmatched situation of water injection pump discharge capacity, normally to be greater than the pumpage water filling of injection allocation amount, more unnecessary water under high pressure is returned water tank by reflux pipeline; In the injecting process by the change of stratum water swelling elastomer, degradation factor affects under water injection pump pump efficiency, easily causes water injection pressure fluctuate, causes water injection well often to occur surpassing and short phenomenon.Affect by the allotment of water injection rate or water injection pump maintenance, need often to carry out to open, termination of pumping and and pump operation.
The water injection pump that current squirrel cage motor drags opens and the operating process of pump is: first open return valve pressure release, then start water injection pump, finally regulate return valve water injection pressure to be adjusted to the value of needs, normal water filling again.During pressure release, a large amount of water under high pressure is become low-pressure water, cause energy dissipation, rate when simultaneously affecting water filling, and there is certain security risk in manual operation high pressure reflow valve.
Summary of the invention
The object of the invention is to solve water injection pump that squirrel cage motor drags to start with load and water injection pressure fluctuates the large problem of the capacity of returns that causes.
For this reason, the water injection pump band that the invention provides the dragging of a kind of squirrel cage motor carries and starts voltage stabilizing water filling device, comprises the squirrel cage motor of water injection pump and dragging water injection pump, also comprises intelligent vector frequency converter, redundant pressure controller and pressure sensor;
Described intelligent vector frequency converter is connected with three-phase alternating-current supply, water injection pump header end is located at by described pressure sensor, pressure signal is fed to redundant pressure controller by this pressure sensor, the rate-adaptive pacemaker of the pressure signal received and intelligent vector frequency converter is formed closed-loop control by redundant pressure controller, described intelligent vector frequency converter is connected with squirrel cage motor, is changed the rotating speed of squirrel cage motor by intelligent vector frequency converter output frequency.
Described intelligent vector frequency converter is provided with out put reactor.
The afterbody of described squirrel cage motor is provided with strong cold independent blower fan.
Described intelligent vector frequency converter model is CPC2200C43A.
Described redundant pressure controller model is DTA10N-P.
The invention has the beneficial effects as follows: the water injection pump band that this squirrel cage motor provided by the invention drags carries and starts voltage stabilizing water filling device, by adopting intelligent vector frequency converter, magnetic field steering vector control is carried out to squirrel cage motor, improve squirrel cage motor Driving Torque under the low speed, realize water injection pump band and carry startup, and starting current is little; By the change of pressure sensor Real-Time Monitoring water injection pressure, by redundant pressure controller, water injection pressure signal and intelligent vector frequency converter rate-adaptive pacemaker are carried out closed-loop control, regulate water injection pressure by the rotating speed changing motor; Increase separate fan at squirrel cage motor afterbody, improve the exhaust air rate of low speed lower cage formula motor, reduce electric machine temperature rise.
Be described in further details below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is composition schematic diagram of the present invention.
In figure: 1, intelligent vector frequency converter; 2, redundant pressure controller; 3, out put reactor; 4, pressure sensor; 5, water injection pump; 6, squirrel cage motor; 7, strong cold independent blower fan.
Embodiment
Embodiment 1:
As shown in Figure 1, the water injection pump band present embodiments providing the dragging of a kind of squirrel cage motor carries and starts voltage stabilizing water filling device, comprise the squirrel cage motor 6 of water injection pump 5 and dragging water injection pump 5, also comprise intelligent vector frequency converter 1, redundant pressure controller 2 and pressure sensor 4;
Described intelligent vector frequency converter 1 is connected with three-phase alternating-current supply, water injection pump 5 header end is located at by described pressure sensor 4, pressure signal is fed to redundant pressure controller 2 by this pressure sensor 4, the rate-adaptive pacemaker of the pressure signal received and intelligent vector frequency converter 1 is formed closed-loop control by redundant pressure controller 2, described intelligent vector frequency converter 1 is connected with squirrel cage motor 6, changed the rotating speed of squirrel cage motor 6 by intelligent vector frequency converter 1 output frequency, reach the object automatically regulating water injection pressure and automatic voltage regulation water filling.
The present embodiment implementation process:
By the pressure of pressure sensor 4 Real-Time Monitoring water injection pump 5 header end, and pressure signal is fed to redundant pressure controller 2, and the rate-adaptive pacemaker of pressure signal and intelligent vector frequency converter 1 is formed closed-loop control, magnetic field steering vector control is carried out by intelligent vector frequency converter 1 pair of squirrel cage motor 6, improve squirrel cage motor 6 Driving Torque under the low speed, realize water injection pump 5 and be with a year startup, simultaneously by regulating intelligent vector frequency converter 1 output frequency automatically to regulate water injection pressure.During water injection pump 5 start-up course, intelligence vector driver adopts soft start, and squirrel cage motor 6 and water injection pump 5 slowly start running.
Embodiment 2:
On the basis of embodiment 1, intelligence vector frequency converter 1 is provided with out put reactor 3, increase the effective propagation path of frequency converter to motor, effectively suppress the instant high-voltage produced during the IGBT switch of frequency converter, reduce the harmful effect of this voltage to cable insulation and motor.
The afterbody of squirrel cage motor 6 is provided with strong cold independent blower fan 7 in the present embodiment, improves the exhaust air rate of squirrel cage motor 6 under the low speed, reduces squirrel cage motor 6 temperature rise.
Embodiment 3:
On the basis of embodiment 2, the water injection pump band adopting squirrel cage motor of the present invention to drag carries the water injection pump 5(model 5DS-25.7/20 starting voltage stabilizing water filling device and drag at the squirrel cage motor 6 that power is 185kW) upper test run, intelligence vector frequency converter 1 connects three-phase alternating-current supply, intelligence vector frequency converter 1 controls squirrel cage motor 6 by connecing out put reactor 3, squirrel cage motor 6 drags water injection pump 5 and operates, when water injection pressure is 17MPa, maximum starting current is 300A, be less than the rated current of motor, start more steady; When goal pressure is 18.5MPa, water injection pressure fluctuation is less than 0.1MPa; After motor afterbody increases strong cold independent blower fan 7, motor housing temperature reduces 5 DEG C, and completely eliminate backflow in station, integrated power-saving rate reaches 20%.
In the present embodiment, intelligent vector frequency converter 1 model is CPC2200C43A, and redundant pressure controller 2 model is DTA10N-P, and out put reactor 3 model is LM-ACR4002, and pressure sensor 4 model is YSH-131CR, and strong cold independent blower fan 7 model is G-112A.
In sum, the water injection pump 5 that this squirrel cage motor 6 provided by the invention drags is with to carry and is started voltage stabilizing water filling device, magnetic field steering vector control is carried out by adopting intelligent vector frequency converter 1 pair of squirrel cage motor 6, improve squirrel cage motor 6 Driving Torque under the low speed, realize water injection pump 5 and be with a year startup, and starting current is little; By the change of pressure sensor 4 Real-Time Monitoring water injection pressure, water injection pressure signal and intelligent vector frequency converter 1 rate-adaptive pacemaker are carried out closed-loop control by redundant pressure controller 2, regulate water injection pressure by the rotating speed changing motor; Increase separate fan at squirrel cage motor 6 afterbody, improve the exhaust air rate of low speed lower cage formula motor 6, reduce electric machine temperature rise.
The technology that the present embodiment does not describe in detail belongs to common practise or the common technology means of the industry, does not describe one by one here.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (5)
1. the water injection pump band of a squirrel cage motor dragging carries and starts voltage stabilizing water filling device, comprise the squirrel cage motor (6) of water injection pump (5) and dragging water injection pump (5), it is characterized in that: also comprise intelligent vector frequency converter (1), redundant pressure controller (2) and pressure sensor (4);
Described intelligent vector frequency converter (1) is connected with three-phase alternating-current supply, water injection pump (5) header end is located at by described pressure sensor (4), pressure signal is fed to redundant pressure controller (2) by this pressure sensor (4), the frequency output signal of the pressure signal received and intelligent vector frequency converter (1) is formed closed-loop control by redundant pressure controller (2), described intelligent vector frequency converter (1) is connected with squirrel cage motor (6), is changed the rotating speed of squirrel cage motor (6) by intelligent vector frequency converter (1) output frequency.
2. the water injection pump band that a kind of squirrel cage motor according to claim 1 drags carries and starts voltage stabilizing water filling device, it is characterized in that: described intelligent vector frequency converter (1) is provided with out put reactor (3).
3. the water injection pump band that a kind of squirrel cage motor according to claim 1 drags carries and starts voltage stabilizing water filling device, it is characterized in that: the afterbody of described squirrel cage motor (6) is provided with strong cold independent blower fan (7).
4. the water injection pump band that a kind of squirrel cage motor according to claim 1 drags carries and starts voltage stabilizing water filling device, it is characterized in that: described intelligent vector frequency converter (1) model is CPC2200C43A.
5. the water injection pump band that a kind of squirrel cage motor according to claim 1 drags carries and starts voltage stabilizing water filling device, it is characterized in that: described redundant pressure controller model is DTA10N-P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950797.6A CN105471348A (en) | 2015-12-19 | 2015-12-19 | Squirrel-cage motor driven water injection pump load starting voltage-stabilizing water injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950797.6A CN105471348A (en) | 2015-12-19 | 2015-12-19 | Squirrel-cage motor driven water injection pump load starting voltage-stabilizing water injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105471348A true CN105471348A (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510950797.6A Pending CN105471348A (en) | 2015-12-19 | 2015-12-19 | Squirrel-cage motor driven water injection pump load starting voltage-stabilizing water injection device |
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| Country | Link |
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| CN (1) | CN105471348A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441791A (en) * | 2018-11-15 | 2019-03-08 | 中国石油天然气股份有限公司 | Water injection station double-pump joint control water injection intelligent control system and method |
| CN110331967A (en) * | 2019-06-11 | 2019-10-15 | 中国石油天然气股份有限公司 | Control and protection system and method for on-load starting of high-pressure water injection pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201858132U (en) * | 2010-11-09 | 2011-06-08 | 漯河瑞来信节能科技有限公司 | Fan frequency conversion cabinet with variable-frequency and power-frequency switching function |
| CN103104449A (en) * | 2011-11-11 | 2013-05-15 | 刘旭 | Frequency-conversion speed regulating device and frequency-conversion speed regulating method applied to oilfield water injection system |
| CN203067252U (en) * | 2012-12-28 | 2013-07-17 | 永城煤电控股集团有限公司 | Underground coal mine water injection pump intelligent control system based on programmable logic controller (PLC) |
| CN205304671U (en) * | 2015-12-19 | 2016-06-08 | 中国石油天然气股份有限公司 | Squirrel-cage motor driven water injection pump load starting voltage-stabilizing water injection device |
-
2015
- 2015-12-19 CN CN201510950797.6A patent/CN105471348A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201858132U (en) * | 2010-11-09 | 2011-06-08 | 漯河瑞来信节能科技有限公司 | Fan frequency conversion cabinet with variable-frequency and power-frequency switching function |
| CN103104449A (en) * | 2011-11-11 | 2013-05-15 | 刘旭 | Frequency-conversion speed regulating device and frequency-conversion speed regulating method applied to oilfield water injection system |
| CN203067252U (en) * | 2012-12-28 | 2013-07-17 | 永城煤电控股集团有限公司 | Underground coal mine water injection pump intelligent control system based on programmable logic controller (PLC) |
| CN205304671U (en) * | 2015-12-19 | 2016-06-08 | 中国石油天然气股份有限公司 | Squirrel-cage motor driven water injection pump load starting voltage-stabilizing water injection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441791A (en) * | 2018-11-15 | 2019-03-08 | 中国石油天然气股份有限公司 | Water injection station double-pump joint control water injection intelligent control system and method |
| CN109441791B (en) * | 2018-11-15 | 2023-09-26 | 中国石油天然气股份有限公司 | Intelligent control system and method for double-pump combined control water injection of water injection station |
| CN110331967A (en) * | 2019-06-11 | 2019-10-15 | 中国石油天然气股份有限公司 | Control and protection system and method for on-load starting of high-pressure water injection pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160406 |