CN204402434U - A kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device - Google Patents
A kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device Download PDFInfo
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- CN204402434U CN204402434U CN201420741743.XU CN201420741743U CN204402434U CN 204402434 U CN204402434 U CN 204402434U CN 201420741743 U CN201420741743 U CN 201420741743U CN 204402434 U CN204402434 U CN 204402434U
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- super capacitor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model discloses a kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device, comprise frequency converter, oil pumper, charge-discharge control circuit and super capacitor module, electrical network connects oil pumper by frequency converter, super capacitor module accesses frequency converter through charge-discharge control circuit, also comprise two-way DC/DC converter, charge-discharge control circuit is connected with super capacitor module by two-way DC/DC converter.The utility model adds two-way DC/DC converter in the DC loop of existing energy-saving device for beam-pumping, make its output voltage both can lower than also can higher than input voltage, improve the capacity usage ratio of super capacitor, and solve the problem excessive to the charging current of super capacitor, considerably increase the application life of super capacitor.
Description
Technical field
The utility model relates to oil-field oil pumper technical field, particularly relates to a kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device.
Background technology
Current pumping unit for oil field great majority still drive by ordinary three-phase synchronous, and efficiency only has 15%-25%, even lower.Part oil field brings into use frequency conversion speed-adjusting system to control oil pumper, and effectively improve oil pumper duty, efficiency reaches 40%.Frequency control pumping unit system, mainly comprises the part such as frequency converter and oil pumper, and frequency converter is primarily of rectification and inversion two parts composition.When oil pumper is operated in upstroke, alternating current is direct current through over commutation field transformation, and direct current is supplied to the voltage of oil pumper amplitude and frequency-adjustable through inverter circuit; When oil pumper is in down stroke or the unexpected power-off of system, oil pumper is in regenerative braking state, and oil pumper produces a large amount of recovered energies (if when oil pumper is magneto, recovered energy is even more serious).Recovered energy process problem is the key that frequency conversion pumping unit system is applied, and according to braking resistor or unit consumption, not only influential system efficiency, and the heat produced can increase system radiating burden; If by energy feedback to electrical network, one group of inverter be increased, both added cost, and also brought harmonic pollution.Therefore, this part recovered energy how is better utilized to be solve the low key factor of efficiency of the pumping unit.
In recent years in the process of oil pumper recovered energy, more achievement has been obtained, wherein utility model patent 200920098739.5 discloses a kind of super capacitor energy-storage type energy-saving device for beam-pumping, propose super capacitor in parallel on oil pumper frequency changer direct current bus, and control the charge and discharge process of super capacitor by charging and discharging circuit.This patent comprises the parts such as frequency converter, oil pumper, charge-discharge control circuit, super capacitor, electrical network is powered to oil pumper by frequency converter, super capacitor accesses frequency converter by charge-discharge control circuit, super capacitor is through the dc bus of IGBT module access frequency converter, constitute the charge control loop of super capacitor, super capacitor, through the dc bus of diode access frequency converter, constitutes the discharge control loop of super capacitor.Dc bus is connected with super capacitor by charging and discharging circuit by this patent, super capacitor electric discharge process in along with electric discharge time increase, the quantity of electric charge at super capacitor pole plate two ends reduces, when the undertension of super capacitor is to ensure the normal work of oil pumper, discharge process terminates, super capacitor has electric energy not greatly to be utilized, therefore there is the problem that the utilization rate of electrical of super capacitor is not high, and frequency changer direct current bus side voltage is larger, directly be connected with super capacitor, make the charging current of super capacitor excessive, shorten the application life of super capacitor.
Utility model content
The purpose of this utility model there are provided a kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device, reduce the charging/discharging voltage of super capacitor, the utilization rate of electrical of super capacitor can not only be improved, and the application life of super capacitor can be extended.
The technical solution adopted in the utility model is:
A kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device, comprise frequency converter, oil pumper, charge-discharge control circuit and super capacitor module, electrical network connects oil pumper by frequency converter, super capacitor module accesses frequency converter through charge-discharge control circuit, also comprise two-way DC/DC converter, charge-discharge control circuit is connected with super capacitor module by two-way DC/DC converter.
Also comprise power transfer device, RTU circuit and protection circuit, the electric energy output end of super capacitor module is connected with the electrical energy inputs of power transfer device, and the electric energy output end of power transfer device is connected with the electrical energy inputs of RTU circuit and protection circuit respectively.
Described two-way DC/DC converter adopts two-way Buck/Boost converter.
The utility model adds two-way DC/DC converter in the DC loop of existing energy-saving device for beam-pumping, make its output voltage both can lower than also can higher than input voltage, improve the capacity usage ratio of super capacitor, and solve the problem excessive to the charging current of super capacitor, considerably increase the application life of super capacitor.
Super capacitor is connected with RTU electricity and protection circuit by power transfer device by the utility model; after grid cut-off; the electric energy that super capacitor stores can supply RTU circuit and protection circuit work a period of time; after solving system accident power-off; operating personnel cannot learn the problem of presence states in time, and ensure that the safety of frequency converter and oil pumper.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Detailed description of the invention
As shown in Figure 1, the utility model comprises frequency converter, oil pumper, charge-discharge control circuit, super capacitor module, two-way DC/DC converter, power transfer device, RTU circuit and protection circuit.Electrical network connects oil pumper by frequency converter; frequency converter connects charge-discharge control circuit; charge-discharge control circuit connects two-way DC/DC converter; two-way DC/DC converter is connected with super capacitor module; the electric energy output end of super capacitor module connects the electrical energy inputs of power transfer device, and the electric energy output end of power transfer device connects the electrical energy inputs of RTU circuit and protection circuit respectively.
RTU circuit and protection circuit are original circuit in frequency conversion oil pumping system.RTU circuit is mainly used to realize the various functions such as data acquisition, equipment control, measurement, parameter adjustment and various types of signal warning.Protection circuit is mainly used to the safety protecting frequency converter and motor.Power transfer device is mainly used to control electrical network or super capacitor module is powered to RTU circuit and protection circuit; power transfer device mainly comprises the functions such as rectification, step-down and electrical source exchange; the application that power transfer device is existing more in the prior art, no longer too much describes with regard to its operating principle.
In the utility model, two-way DC/DC converter adopts two-way Buck/Boost converter.Two-way Buck/Boost converter is that a kind of output voltage both can lower than also higher than the DC converter of input voltage, being mainly used to conversion dc voltage.When oil pumper is operated in down stroke, the charge circuit conducting of super capacitor module charge-discharge control circuit, the recovered energy of oil pumper gives the charging of super capacitor module after the step-down of two-way Buck/Boost converter, and now two-way Buck/Boost converter is operated in Buck decompression mode; When oil pumper is operated in upstroke, the discharge loop conducting of super capacitor module charge-discharge control circuit, the electric energy of super electrical power storage feeds back to frequency changer direct current bus side after two-way Buck/Boost converter boost, for oil pumper, now two-way Buck/Boost converter is operated in Boost boost mode.The use of two-way Buck/Boost converter, substantially increases the utilization ratio of super capacitor storage power, and the situation that the charging current avoiding super capacitor module is excessive, increase the application life of super capacitor module.
When the unexpected power-off of electrical network, power transfer device automatically switches as to be powered by super capacitor module, and the electricity that super capacitor module stores can be used for RTU circuit and protection circuit work a period of time, to protect the safety of frequency converter and motor.Solve the adding of power transfer device the powerup issue of RTU circuit and protection circuit after power-off, further increase the utilization rate of super capacitor module store electrical energy.
Claims (3)
1. one kind has the pumping unit system of super capacitor energy-storage type frequency converting and energy saving device, comprise frequency converter, oil pumper, charge-discharge control circuit and super capacitor module, electrical network connects oil pumper by frequency converter, super capacitor module accesses frequency converter through charge-discharge control circuit, it is characterized in that: also comprise two-way DC/DC converter, charge-discharge control circuit is connected with super capacitor module by two-way DC/DC converter.
2. a kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device according to claim 1; it is characterized in that: also comprise power transfer device, RTU circuit and protection circuit; the electric energy output end of super capacitor module is connected with the electrical energy inputs of power transfer device, and the electric energy output end of power transfer device is connected with the electrical energy inputs of RTU circuit and protection circuit respectively.
3. a kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device according to claim 1 and 2, is characterized in that: described two-way DC/DC converter adopts two-way Buck/Boost converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741743.XU CN204402434U (en) | 2014-12-02 | 2014-12-02 | A kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741743.XU CN204402434U (en) | 2014-12-02 | 2014-12-02 | A kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402434U true CN204402434U (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420741743.XU Expired - Fee Related CN204402434U (en) | 2014-12-02 | 2014-12-02 | A kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204402434U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522891A (en) * | 2016-12-19 | 2017-03-22 | 西安理工大学 | Balanced pumping unit for regenerative power generation |
| CN116632877A (en) * | 2023-07-19 | 2023-08-22 | 深圳市清研储能技术有限公司 | Power supply device and power supply method of oil field pumping unit |
-
2014
- 2014-12-02 CN CN201420741743.XU patent/CN204402434U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522891A (en) * | 2016-12-19 | 2017-03-22 | 西安理工大学 | Balanced pumping unit for regenerative power generation |
| CN106522891B (en) * | 2016-12-19 | 2019-05-28 | 西安理工大学 | Regenerative electric power balanced oil extractor |
| CN116632877A (en) * | 2023-07-19 | 2023-08-22 | 深圳市清研储能技术有限公司 | Power supply device and power supply method of oil field pumping unit |
| CN116632877B (en) * | 2023-07-19 | 2024-04-30 | 深圳市清研储能技术有限公司 | Power supply device and power supply method of oil field pumping unit |
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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: 20150617 Termination date: 20171202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |