CN201435708Y - Constant frequency and constant pressure generating set - Google Patents
Constant frequency and constant pressure generating set Download PDFInfo
- Publication number
- CN201435708Y CN201435708Y CN2009200334469U CN200920033446U CN201435708Y CN 201435708 Y CN201435708 Y CN 201435708Y CN 2009200334469 U CN2009200334469 U CN 2009200334469U CN 200920033446 U CN200920033446 U CN 200920033446U CN 201435708 Y CN201435708 Y CN 201435708Y
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- generating set
- generator
- constant
- frequency
- control device
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model provides a constant frequency and constant pressure generating set for oil rig, which mainly settles the problems of uncontrollable frequency of energy saving generating set of the oil rig and low energy saving efficiency in prior art. The generating set comprises a compound box, an AC excitation generator and a power utilization system which are sequentially connected with a motor in series. The AC excitation generator is connected with a control device which provides excitation and controls the constant frequency and constant pressure of the generating set. The control device is composed of a digital signal processor, an inverter and a rectifier. The generating set has the advantages of effectively utilizing the power of the motor, increasing the usage factor of energy,reducing production cost and reducing failure rate of system, and truly realizes the purpose of energy saving in oil rig.
Description
Technical field
The utility model relates to a kind of oil-well rig generating set, is specifically related to a kind of oil-well rig constant frequency and constant voltage generating set.
Background technology
At present, the rig that is applied in the petroleum industry belongs to main equipment, and its power is provided by one or more Diesel engine.Diesel engine converges power by compound box, and the drilling equipments such as slush pump that drive rig then carry out work.
The generation of a series of problems such as in the course of work of oil-well rig, the Diesel engine most of the time all is in the lower operating state of duty ratio, has so directly caused fuel efficiency low, and energy waste is serious.Therefore, mostly adopt the synchronous generator that is equipped with DC excitation as energy-saving generator in the industry at present, mechanical energy engine is unnecessary by energy-saving generator is converted into electric energy, supplies with auxiliary power consumption equipment or other power consumption equipments of well site of rig, thereby realizes the energy-saving run of oil-well rig.
But adopt the synchronous generator of DC excitation, have following shortcoming:
The frequency of direct-current excited-field generator voltage and motor speed have fixing relation, frequency is non-adjustable, the oil-well rig drilling process is because the variation of load can cause the fluctuation of engine speed, the fluctuation of speed must cause the variation of generator voltage frequency, and this power consumption equipment that can influence other inductive load can not stable operation.
The frequency instability of direct-current excited-field generator voltage, make direct-current excited-field generator and other electrical networks not to be incorporated into the power networks, cause the power utilization of Diesel engine low, energy dissipation is serious, in the use of reality, can't normally use, equipment mostly is in idle state, can't satisfy the electricity needs of well site to constant frequency and constant voltage, does not reach energy-saving effect truly.
Summary of the invention
The utility model provides a kind of oil-well rig constant frequency and constant voltage generating set, mainly solves the problem that prior art PetroChina Company Limited. rig is uncontrollable with the energy-saving generator class frequency, energy-saving efficiency is low.
Technical solution of the present utility model is as follows:
This oil-well rig comprises compound box 4, generator 2 and the using electricity system 3 of connecting successively with engine 1 with the constant frequency and constant voltage generating set, and generator 2 is connected with the control device 5 that excitation is provided and controls generator 2 constant frequency and constant voltages, and generator 2 is ac excited generators.
Above-described control device 5 is made of digital signal processor 51, inverter 52 and rectifier 53.
Above-described control device 5 is connected on the excitation winding 21 of generator 2.
Advantage of the present utility model is:
1, the oil-well rig constant frequency and constant voltage generating set that provides of the utility model, adopt ac excited generator structure and control mode, send electric frequency, voltage and generator speed equivalent by gathering generator, feed back to frequency and amplitude size and phase place that control device comes the regulator generator exciting current, realized the constant frequency and the constant voltage of electric energy.
2, the oil-well rig constant frequency and constant voltage generating set that provides of the utility model can run on different meritorious, idle combination, to regulate power factor, simultaneously, realizes the function that is incorporated into the power networks of energy-saving generator and other electrical networks.
3, the oil-well rig constant frequency and constant voltage generating set that provides of the utility model has effectively utilized the power of engine, has improved energy utilization ratio, reduces production costs, and reduces system failure rate, really realizes the oil-well rig purpose of energy saving.
Description of drawings
Fig. 1 is the schematic diagram of the oil-well rig of constant frequency and constant voltage with the energy-saving generator group.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail:
This oil-well rig comprises compound box 4, generator 2 and the using electricity system 3 of connecting successively with engine 1 with the constant frequency and constant voltage generating set, being connected between compound box 4 and the generator 2 can be to be rigidly connected or elasticity connects, being rigidly connected can be coaxial connection, and it can be that belt connects that elasticity connects.Generator 2 is ac excited generators, generator 2 is connected with the control device 5 that excitation is provided and controls generator 2 constant frequency and constant voltages, control device 5 is made of digital signal processor 51, inverter 52 and rectifier 53, and control device 5 is connected on the excitation winding 21 of generator 2.
In the course of work, compound box 4 converges the power of engine 1 output, then a part of power is driven the drilling equipments such as slush pump of rig by output shaft, excess power is delivered to ac excited generator 2, be used to control the load variations in the control device 5 real time monitoring well sites of generator 2, by digital signal processor 51, inverter 52 and rectifier 53, the frequency of regulator generator 2 exciting currents and amplitude realize the constant frequency and constant voltage control to generator output electric energy, by the size of adjusting exciting current and the active power and the reactive power size of phase control generator output, thus the function that is incorporated into the power networks of realization energy-saving generator and other electrical network.
Claims (3)
1, a kind of oil-well rig constant frequency and constant voltage generating set, comprise compound box (4), generator (2) and the using electricity system (3) of connecting successively with engine (1), it is characterized in that: described generator (2) is connected with the control device (5) that excitation is provided and controls generator (2) constant frequency and constant voltage; Described generator (2) is an ac excited generator.
2, according to the described oil-well rig of claim 1 constant frequency and constant voltage generating set, it is characterized in that: described control device (5) is made of digital signal processor (51), inverter (52) and rectifier (53).
3, according to claim 1 or 2 described oil-well rig constant frequency and constant voltage generating sets, it is characterized in that: described control device (5) is connected on the excitation winding (21) of generator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200334469U CN201435708Y (en) | 2009-06-08 | 2009-06-08 | Constant frequency and constant pressure generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200334469U CN201435708Y (en) | 2009-06-08 | 2009-06-08 | Constant frequency and constant pressure generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201435708Y true CN201435708Y (en) | 2010-03-31 |
Family
ID=42054522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200334469U Expired - Fee Related CN201435708Y (en) | 2009-06-08 | 2009-06-08 | Constant frequency and constant pressure generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201435708Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554779A (en) * | 2021-02-22 | 2021-03-26 | 中铁长安重工有限公司 | Rock soil layer drilling exploration equipment for engineering construction |
-
2009
- 2009-06-08 CN CN2009200334469U patent/CN201435708Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554779A (en) * | 2021-02-22 | 2021-03-26 | 中铁长安重工有限公司 | Rock soil layer drilling exploration equipment for engineering construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20140608 |