CN205304671U - 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
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- CN205304671U CN205304671U CN201521059627.0U CN201521059627U CN205304671U CN 205304671 U CN205304671 U CN 205304671U CN 201521059627 U CN201521059627 U CN 201521059627U CN 205304671 U CN205304671 U CN 205304671U
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- cage motor
- water injection
- squirrel
- squirrel cage
- frequency converter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 238000002347 injection Methods 0.000 title abstract description 32
- 239000007924 injection Substances 0.000 title abstract description 32
- 241000555745 Sciuridae Species 0.000 claims description 42
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000009096 changqing Substances 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
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Control Of Ac Motors In General (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The utility model provides a water injection pump area that squirrel-cage motor drags carries and starts steady voltage water injection device, including the squirrel-cage motor of water injection pump and drag water injection pump, still include intelligent vector converter, redundant pressure controller and pressure sensor. The utility model adopts the intelligent vector frequency converter to carry out magnetic field guiding vector control on the squirrel-cage motor, thereby improving the output torque of the squirrel-cage motor at low speed, realizing the loaded starting of the water injection pump and having small starting current; 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
This utility model belongs to oil-field flooding technical field, is specifically related to the water injecting pump band load startup voltage stabilizing water filling device that a kind of squirrel cage motor drags.
Background technology
In Changqing oilfields Development and Production process, water filling pressure charging system is to ensure that the important measures that water injection rate completes, and current commonly used squirrel cage motor drags plunger type water injection pump and carries out supercharging. In the injecting process, owing to being affected by factors such as the change of water injection well well number, the dynamically adjustment of injection allocation amount, water-injection station injection allocation amount and the unmatched situation of water injecting pump discharge capacity often occur, it is common that with the pumpage water filling more than injection allocation amount, more unnecessary water under high pressure is returned water tank by reflux pipeline; The injecting process is affected by degradation factor under the change of stratum water swelling elastomer, water injecting pump pump efficiency, it is easy to cause water injection pressure to fluctuate, cause that water injection well often occurs surpassing shorting phenomenon. Affected by the allotment of water injection rate or water injecting pump maintenance, it is necessary to often carry out opening, termination of pumping and and pump operation.
The water injecting pump that current squirrel cage motor drags opens and the operating process of pump is: is first turned on reflux inlet pressure release, then starts water injecting pump, finally regulates reflux inlet again and water injection pressure adjusts the value needed, normal water filling. During pressure release, a large amount of water under high pressures are become low setting-out, cause energy dissipation, affect rate during water filling simultaneously, and manual operation high pressure reflow valve exists certain security risk.
Utility model content
The purpose of this utility model is to solve the problem that water injecting pump can not start and the capacity of returns that causes of water injection pressure fluctuation is big that squirrel cage motor drags with load.
For this, this utility model provides the water injecting pump band load startup voltage stabilizing water filling device that a kind of squirrel cage motor drags, and including water injecting pump and the squirrel cage motor dragging water injecting pump, also includes intelligence vector frequency converter, redundant pressure controller and pressure transducer;
Described intelligence vector frequency converter is connected with three-phase alternating-current supply, described pressure transducer is located at water injecting pump header end, pressure signal is fed to redundant pressure controller by this pressure transducer, the rate-adaptive pacemaker of the pressure signal received with intelligence vector frequency converter is formed closed loop control by redundant pressure controller, described intelligence vector frequency converter is connected with squirrel cage motor, is changed the rotating speed of squirrel cage motor by intelligence vector frequency converter output frequency.
Described intelligence vector frequency converter is provided with output reactance device.
The afterbody of described squirrel cage motor is provided with strong cold independent blower fan.
Described intelligence vector frequency converter model is CPC2200C43A.
Described redundant pressure controller model is DTA10N-P.
The beneficial effects of the utility model are: the water injecting pump band load that this squirrel cage motor that this utility model provides drags starts voltage stabilizing water filling device, by adopting intelligence vector frequency converter that squirrel cage motor carries out magnetic field steering vector control, improve squirrel cage motor and export torque under the low speed, realize water injecting pump band load to start, and starting current is little; Monitored water injection pressure change by pressure transducer in real time, redundant pressure controller water injection pressure signal is carried out closed loop control with intelligence vector frequency converter rate-adaptive pacemaker, regulate water injection pressure by changing the rotating speed of motor; Increase separate fan at squirrel cage motor afterbody, improve the exhaust air rate of low speed lower cage formula motor, reduce motor temperature rise.
It is described in further details below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is composition schematic diagram of the present utility model.
In figure: 1, intelligence vector frequency converter; 2, redundant pressure controller; 3, output reactance device; 4, pressure transducer; 5, water injecting pump; 6, squirrel cage motor; 7, strong cold independent blower fan.
Detailed description of the invention
Embodiment 1:
As shown in Figure 1, present embodiments provide the water injecting pump band load startup voltage stabilizing water filling device that a kind of squirrel cage motor drags, including water injecting pump 5 and the squirrel cage motor 6 dragging water injecting pump 5, also include intelligence vector frequency converter 1, redundant pressure controller 2 and pressure transducer 4;
Described intelligence vector frequency converter 1 is connected with three-phase alternating-current supply, described pressure transducer 4 is located at water injecting pump 5 header end, pressure signal is fed to redundant pressure controller 2 by this pressure transducer 4, the rate-adaptive pacemaker of the pressure signal received with intelligence vector frequency converter 1 is formed closed loop control by redundant pressure controller 2, described intelligence vector frequency converter 1 is connected with squirrel cage motor 6, changed the rotating speed of squirrel cage motor 6 by intelligence vector frequency converter 1 output frequency, reach the purpose being automatically adjusted water injection pressure and automatic voltage regulation water filling.
The present embodiment implementation process:
The pressure of water injecting pump 5 header end is monitored in real time by pressure transducer 4, and pressure signal is fed to redundant pressure controller 2, and the rate-adaptive pacemaker of pressure signal with intelligence vector frequency converter 1 is formed closed loop control, by intelligence vector frequency converter 1, squirrel cage motor 6 is carried out magnetic field steering vector control, improve squirrel cage motor 6 and export torque under the low speed, realize water injecting pump 5 band load to start, be automatically adjusted water injection pressure by adjustment intelligence vector frequency converter 1 output frequency simultaneously. During water injecting pump 5 start-up course, intelligence vector driver adopts soft start, and squirrel cage motor 6 and water injecting pump 5 slowly start operating.
Embodiment 2:
On the basis of embodiment 1, intelligence vector frequency converter 1 is provided with output reactance device 3, increase the converter effective propagation path to motor, effectively suppress the instant high-voltage produced during the IGBT switch of converter, reduce the harmful effect to cable insulation and motor of this voltage.
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 injecting pump that this utility model squirrel cage motor drags is adopted to start, with load, the water injecting pump 5(model 5DS-25.7/20 that voltage stabilizing water filling device drags 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 output reactance device 3, squirrel cage motor 6 drags water injecting pump 5 and operates, when water injection pressure is 17MPa, maximum starting current is 300A, less than the rated current of motor, start more steady; When goal pressure is 18.5MPa, water injection pressure fluctuates less than 0.1MPa; After motor afterbody increases strong cold independent blower fan 7, motor housing temperature reduces 5 DEG C, completely eliminates station internal reflux, and integrated power-saving rate reaches 20%.
In the present embodiment, intelligence vector frequency converter 1 model is CPC2200C43A, and redundant pressure controller 2 model is DTA10N-P, and output reactance device 3 model is LM-ACR4002, and pressure transducer 4 model is YSH-131CR, and strong cold independent blower fan 7 model is G-112A.
In sum, the water injecting pump 5 band load that this squirrel cage motor 6 that this utility model provides drags starts voltage stabilizing water filling device, by adopting intelligence vector frequency converter 1 that squirrel cage motor 6 is carried out magnetic field steering vector control, improve squirrel cage motor 6 and export torque under the low speed, realize water injecting pump 5 band load to start, and starting current is little; Monitored water injection pressure change in real time by pressure transducer 4, water injection pressure signal is carried out closed loop control with intelligence vector frequency converter 1 rate-adaptive pacemaker by redundant pressure controller 2, regulates water injection pressure by changing the rotating speed of motor; Increase separate fan at squirrel cage motor 6 afterbody, improve the exhaust air rate of low speed lower cage formula motor 6, reduce motor temperature rise.
The technology that the present embodiment does not describe in detail belongs to known general knowledge or the common technology means of the industry, does not describe one by one here.
Exemplified as above is only to illustration of the present utility model, is not intended that the restriction to protection domain of the present utility model, every belongs within protection domain of the present utility model with the same or analogous design of this utility model.
Claims (5)
1. the water injecting pump band load startup voltage stabilizing water filling device that a squirrel cage motor drags, including water injecting pump (5) and the squirrel cage motor (6) dragging water injecting pump (5), it is characterised in that: also include intelligence vector frequency converter (1), redundant pressure controller (2) and pressure transducer (4);
Described intelligence vector frequency converter (1) is connected with three-phase alternating-current supply, described pressure transducer (4) is located at water injecting pump (5) header end, pressure signal is fed to redundant pressure controller (2) by this pressure transducer (4), the frequency output signal of the pressure signal received with intelligence vector frequency converter (1) is formed closed loop control by redundant pressure controller (2), described intelligence vector frequency converter (1) is connected with squirrel cage motor (6), is changed the rotating speed of squirrel cage motor (6) by intelligence vector frequency converter (1) output frequency.
2. the water injecting pump band load that a kind of squirrel cage motor according to claim 1 drags starts voltage stabilizing water filling device, it is characterised in that: described intelligence vector frequency converter (1) is provided with output reactance device (3).
3. the water injecting pump band load that a kind of squirrel cage motor according to claim 1 drags starts voltage stabilizing water filling device, it is characterised in that: the afterbody of described squirrel cage motor (6) is provided with strong cold independent blower fan (7).
4. the water injecting pump band load that a kind of squirrel cage motor according to claim 1 drags starts voltage stabilizing water filling device, it is characterised in that: described intelligence vector frequency converter (1) model is CPC2200C43A.
5. the water injecting pump band load that a kind of squirrel cage motor according to claim 1 drags starts voltage stabilizing water filling device, it is characterised in that: described redundant pressure controller model is DTA10N-P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059627.0U CN205304671U (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 |
|---|---|---|---|
| CN201521059627.0U CN205304671U (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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| Publication Number | Publication Date |
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| CN205304671U true CN205304671U (en) | 2016-06-08 |
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| CN201521059627.0U Active CN205304671U (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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471348A (en) * | 2015-12-19 | 2016-04-06 | 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 CN201521059627.0U patent/CN205304671U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471348A (en) * | 2015-12-19 | 2016-04-06 | 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |