CN203326949U - High frequency PWM chopped wave speed regulating system of oilfield water injection station - Google Patents
High frequency PWM chopped wave speed regulating system of oilfield water injection station Download PDFInfo
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- CN203326949U CN203326949U CN2013204369181U CN201320436918U CN203326949U CN 203326949 U CN203326949 U CN 203326949U CN 2013204369181 U CN2013204369181 U CN 2013204369181U CN 201320436918 U CN201320436918 U CN 201320436918U CN 203326949 U CN203326949 U CN 203326949U
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Abstract
A high frequency PWM chopped wave speed regulating system of an oilfield water injection station aims to solve problems that, in a conventional water injection station, a motor is hard to start, control is not intelligent, a motor protection function is poor, and related data of the motor cannot be collected and displayed. The motor is connected with a soft starter; the soft starter is connected with a rectifier; the output end of the rectifier is connected with the chopper; the output end of the chopper is connected with an inverter; the output end of the inverter is connected with the motor; a data acquisition unit is connected between the soft starter and the rectifier; the data output end of the data acquisition unit is connected with a controller; the control output end of the controller is connected with a modulation driver; the output end of the modulation driver is connected with the chopper; the inverting output end of the controller is connected with an inverter driver; the output end of the inverter driver is connected with the inverter; the data output end of the controller is connected with a display; and the control input end of the controller is connected with an input module. According to the utility model, the easy use, simple operation, advanced function and high practicability are realized.
Description
Technical field
The utility model belongs to the oil extraction in oil field field, relates to oilfield water injection equipment, specifically oil-field flooding station high-frequency PWM chopping speed regulating system.
Background technology
In oil field equipment, water-injection station is also an indispensable part, the effect of water-injection station is that water system is sent here and met the low-pressure water that injection water quality requires and pressurize and become the water under high pressure of oil field development needs by water pump, deliver to respectively the water filling main line through the high pressure valve group, be sent to water injection well through distributing room for water injection again, inject oil reservoir; In order to make flood effectiveness better; traditional water-injection station all improves pump; original motor mostly makes centrifugal water injection pump into; the problem that yet but there is the motor hard reboot in this traditional water-injection station, control is not intelligent, the electric motor protecting function is low and can't gather and show the motor related data; cause the water-injection station electric motor starting by normal instantaneous shutdown; or find after startup that the pump fluctuation is large, complete machine shakes or other mechanical friction is arranged; it is intelligent that Electric Machine Control can't reach; the frequent corrupted of motor is serious, and some relevant necessary datas have no way of learning etc.
Summary of the invention
There is the motor hard reboot in the utility model for solving traditional water-injection station, control not intelligent, low and the problem that can't gather and show the motor related data of electric motor protecting function, and the oil-field flooding station high-frequency PWM chopping speed regulating system proposed, comprise motor, the power input of motor connects power supply, be connected with soft initiator on described motor, soft initiator is connected with rectifier, the output of rectifier is connected with chopper, the output of chopper is connected with inverter, the output of inverter is connected with motor, be connected with data acquisition unit between soft initiator and rectifier, the data output end of data acquisition unit is connected with controller, the control output end of controller is connected with modulating driver, the output of modulating driver is connected with chopper, the inverting output terminal of controller is connected with the inversion driver, the output of inversion driver is connected with inverter, the data output end of controller is connected with display, the control input end of controller is connected with input module.
Described data acquisition unit comprises voltage sensor, current sensor, temperature sensor and data collection processor, and wherein temperature sensor is located on motor.
Described controller is PLC.
Be connected with overvoltage protector between described rectifier and chopper.
Be connected with the stalling protection device between described chopper and inverter.
Described soft initiator is the liquid soft starter device.
The beneficial effects of the utility model: by this system, can carry out effectively intelligent control to motor, gather the necessary datas such as electric moter voltage, electric current and temperature, by controller analysis and processing, soft initiator is controlled soft starter for motor, when soft starter for motor reaches power frequency, go to the rectifier power frequency operation, control the duty ratio of chopper, thereby by the inverter control motor speed, and be provided with overvoltage protector and stalling protection device in system; System makes soft starter for motor, intellectuality, electric motor protecting function high, and has collection and show the functions such as motor related data, easy to use, simple to operate, powerful and practical.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with Fig. 1, the utility model is described in further detail, oil-field flooding station high-frequency PWM chopping speed regulating system, comprise motor, the power input of motor connects power supply, be connected with soft initiator on described motor, control soft starter for motor, damage motor caused to remove the motor hard reboot, soft initiator is connected with rectifier, after soft starter for motor finishes, be that motor reaches power frequency, after normal speed, motor is connected with rectifier, controlling motor normally moves, the output of rectifier is connected with chopper, the rotor electric current is delivered to chopper be transformed into the pulsating direct current electric current after rectifier rectification after, IGBT element in chopper is done periodically turn-on and turn-off action, when the IGBT conducting, motor speed rises, when IGBT turn-offs, motor speed descends, the output of chopper is connected with inverter, electric current is remapped into to alternating current, the output of inverter is connected with motor, so that alternating current is fed back to the additional winding of motor stator, above process belongs to the process of regulating the Duty ratio control motor speed, be connected with data acquisition unit between soft initiator and rectifier, gather the related data of motor necessity, so that controller is processed and is analyzed, thereby by the adjusting to chopper, the intelligent motor speed of controlling, the data output end of data acquisition unit is connected with controller, the control output end of controller is connected with modulating driver, the output of modulating driver is connected with chopper, modulating driver is for the treatment of the signal of controller output, be that data are processed, the PWM of PLC output specifically digital signal is to modulating driver, modulating driver is sent to chopper after digital signal is converted to photosignal, the inverting output terminal of controller is connected with the inversion driver, the output of inversion driver is connected with inverter, in like manner, the inversion driver is processed for data, the data output end of controller is connected with display, demonstration for necessary data, the control input end of controller is connected with input module, so that the staff is controlled controller by input module.
Described data acquisition unit comprises voltage sensor, current sensor, temperature sensor and data collection processor, and wherein temperature sensor is located on motor, thereby gathers voltage, electric current and temperature data.
Described controller comprises PLC.
Be connected with overvoltage protector between described rectifier and chopper, the system components and parts are played a protective role.
Be connected with the stalling protection device between described chopper and inverter, play the effect of protection inverter.
Described soft initiator is the liquid soft starter device, so that effectively realize level and smooth the startup.
The beneficial effect of present embodiment: utilize soft initiator to make motor carry out soft start when starting, also strengthened working effect in the time of the protection motor, gather the motor necessary data by data acquisition unit, and send data to controller, the controller analysis and process after regulate chopper duty inverter when, thereby regulate the rotating speed of motor, reach the purpose to intelligent motor control, data are presented to display allows simultaneously, allow after the staff observes the data of demonstration, control controller work by input module, and be provided with the protector of components and parts in system, effectively solved the problem that there is the motor hard reboot in traditional water-injection station, control is not intelligent, the electric motor protecting function is low and can't gather and show the motor related data.
Claims (6)
1. oil-field flooding station high-frequency PWM chopping speed regulating system, comprise motor, the power input of motor connects power supply, it is characterized in that: on described motor, be connected with soft initiator, soft initiator is connected with rectifier, the output of rectifier is connected with chopper, the output of chopper is connected with inverter, the output of inverter is connected with motor, be connected with data acquisition unit between soft initiator and rectifier, the data output end of data acquisition unit is connected with controller, the control output end of controller is connected with modulating driver, the output of modulating driver is connected with chopper, the inverting output terminal of controller is connected with the inversion driver, the output of inversion driver is connected with inverter, the data output end of controller is connected with display, the control input end of controller is connected with input module.
2. oil-field flooding according to claim 1 station high-frequency PWM chopping speed regulating system, it is characterized in that: described data acquisition unit comprises voltage sensor, current sensor, temperature sensor and data collection processor, and wherein temperature sensor is located on motor.
3. oil-field flooding according to claim 1 station high-frequency PWM chopping speed regulating system, it is characterized in that: described controller is PLC.
4. oil-field flooding according to claim 1 station high-frequency PWM chopping speed regulating system, is characterized in that: between described rectifier and chopper, be connected with overvoltage protector.
5. oil-field flooding according to claim 1 station high-frequency PWM chopping speed regulating system, is characterized in that: be connected with the stalling protection device between described chopper and inverter.
6. oil-field flooding according to claim 1 station high-frequency PWM chopping speed regulating system, it is characterized in that: described soft initiator is the liquid soft starter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204369181U CN203326949U (en) | 2013-07-22 | 2013-07-22 | High frequency PWM chopped wave speed regulating system of oilfield water injection station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204369181U CN203326949U (en) | 2013-07-22 | 2013-07-22 | High frequency PWM chopped wave speed regulating system of oilfield water injection station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326949U true CN203326949U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204369181U Expired - Fee Related CN203326949U (en) | 2013-07-22 | 2013-07-22 | High frequency PWM chopped wave speed regulating system of oilfield water injection station |
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| CN (1) | CN203326949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-07-22 CN CN2013204369181U patent/CN203326949U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20160722 |
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| CF01 | Termination of patent right due to non-payment of annual fee |