CN205986678U - Use well drilling variable -frequency driving system of double layer capacitor - Google Patents
Use well drilling variable -frequency driving system of double layer capacitor Download PDFInfo
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- CN205986678U CN205986678U CN201620975862.0U CN201620975862U CN205986678U CN 205986678 U CN205986678 U CN 205986678U CN 201620975862 U CN201620975862 U CN 201620975862U CN 205986678 U CN205986678 U CN 205986678U
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Abstract
The utility model discloses an use well drilling variable -frequency driving system of double layer capacitor, including the drilling tool equipment of connecting the well drilling motor, the winch of outfit winch motor, winch motor and well drilling motor connect on the dc bus through winch motor converter and drilling tool motor converter respectively, pass through DC on the dc bus A double layer capacitor has been connected to the DC converter, still connects brake resistance through a braking chopper on the dc bus. The winch motor is under the start -up and the state of acceleration, and the double layer capacitor is used for the power supply of winch motor, the winch motor is under release braking power state, and the double layer capacitor charges through the dc bus. After the double layer capacitor is full of, consume extra braking electric energy by brake resistance. The utility model has the advantages that can provide more available power for the promotion of winch, brake resistance capacity can reduce by a wide margin, allow the generator with more steady output operation simultaneously, the operating efficiency has been guaranteed to the effect of filling out millet to the electric peak clipping of loading of well drilling has been played.
Description
Technical field
The present invention relates to drilling platforms, more particularly, it relates to the drilling platforms using transducer drive well system.
Background technology
One of equipment that well drilling hoist must configure as drilling platforms well system, its function is an up and lower caving
Drive, and jointed rod is driven by top and complete to pull out of hole and tripping operation.When in decentralization process, system is braked brake operation,
Winch motor is equivalent to electromotor, toward electrical network feedback electric energy, then consumes electric energy in lifting process.Frequency changing driving system is because adopting
Uncontrollable diode rectification unit and can not by winch motor braking produce electric energy feedback arrive upper level exchange main electrical network, therefore
Traditional drilling well frequency changing driving system and must be only capable of relying on and accesses brake resistor to consume the electric energy of feedback.Due to brake resistor
Corrosion resistance poor, they are arranged in the closing place on platform under normal circumstances, now by air cooling way cool down brake
The effect of resistance is poor, therefore needs on platform to provide a large amount of cooling waters to cool down brake resistor.On the other hand, for improving drilling well
Working performance, well drilling hoist has the process of an of short duration acceleration at the lifting operation initial stage, and now that moment of torsion is significantly increased is defeated for motor
Go out, stop for avoiding the rapid load adding that online generator overload may be made to exceed the speed limit or lead to pressure drop of grid excessive, Platform Power Stations
System is necessary to ensure that the electromotor on-line operation of enough number of units.
Can there is problems with traditional drilling well frequency-conversion drive apparatus：
1st, drilling platforms operation grade is not up to optimization, although the electromotor on-line operation of enough number of units ensure that brill
The efficiency of well operations, but when the steady lifting of well drilling hoist or operation gap, electricity consumption total load amount will decline to a great extent, electromotor
To be run with low output state, now the oil consumption of diesel engine is uneconomical.In whole trip-out operation, carry with well drilling hoist
The operating modes such as liter, standby, decentralization are constantly changed, and electromotor runs all the time in output wide cut is frequently shaken, and reduces bavin
The stability of oil machine group.
2nd, regenerate energy dissipation, not environmentally, during lower brill, winch motor is in dynamic braking state, and this portion of energy is not returned
It is fed to electrical network to be obtained by and consumed by brake resistor；It is cold that the heat that brake resistor produces simultaneously needs a large amount of cooling waters
But, increase the waste of resource.
Content of the invention
The present invention is used double layer capacitor as the energy storage equipment of drilling well frequency changing driving system, its objective is to solve tradition
Drilling platforms braking energy wastes and well drilling hoist accelerates the power demand problem in lifting operation.
In order to achieve the above object, the present invention provides a kind of drilling well frequency changing driving system of use double layer capacitor, bag
Include the drilling tool equipment connecting drilling motor, and realize described drilling tool equipment lifting and the winch of decentralization, outfit winch motor；Institute
State winch motor and drilling motor passes through winch motor converter respectively and drilling tool motor inverter accesses the direct current of power supply function
Bus；On described dc bus, a double layer capacitor is connected to by DC-DC converter.
Described double layer capacitor, from situation：Producer Maxwell, model：125V heavy transportation
Moudle, some groups.
Under optimal way, described dc bus connects brake resistor also by a brake chopper.
Additionally, described winch motor is under startup and acceleration mode, described double layer capacitor is used for described winch motor
Power supply；Under release braking energy state, described double layer capacitor is charged described winch motor by dc bus.
The startup of described winch motor and acceleration mode include
1st, Acceleration of starting under winch motor trip-out process, rotates forward, capacitor discharge；
2nd, enter under winch motor trip-out process at the uniform velocity, rotate forward, capacitor discharge finishes, stop electric discharge；
3rd, bore under winch motor and invert under braking procedure, capacitor charges；
4th, bore under winch motor and invert under braking procedure, capacitor is full of, charging termination；
5th, winch motor is not powered on, static, and capacitor does not charge and also do not discharge；
6th, winch motor is not powered on, static, and other drilling equipments run, capacitor discharge；
7th, winch motor is not powered on, static, and other drilling equipments run, and capacitor discharge finishes, and stops electric discharge.
Additionally, described winch motor, under release braking energy state, after double layer capacitor is full of, disconnects DC-DC
Changer, turns on brake chopper, controls brake resistor to consume extra braking electric energy.
The present invention uses the drilling well frequency changing driving system of double layer capacitor, including the drilling tool equipment connecting drilling motor,
And realize described drilling tool equipment lifting and the winch of decentralization, outfit winch motor；Described winch motor and drilling motor are respectively
Access the dc bus of power supply function by winch motor converter and drilling tool motor inverter；Pass through on described dc bus
DC-DC converter is connected to a double layer capacitor.One is connected also by a brake chopper on described dc bus
Brake resistor.Under startup and acceleration mode, described double layer capacitor is used for the confession of described winch motor to described winch motor
Electricity；Under release braking energy state, described double layer capacitor is charged described winch motor by dc bus, when electric double layer electricity
After container is full of, disconnect DC-DC converter, turn on brake chopper, control brake resistor to consume extra braking electric energy.
Advantages of the present invention is as follows：
1st, under identical station capacity, the present invention can provide more available horsepowers for the lifting of winch, and then has improved
Bore working performance, save the activity duration of drilling platforms.
2nd, in the present invention, brake resistor capacity more traditional drilling well frequency conversion system of required configuration significantly reduces, and reduces to flat
The cooling capacity demand of platform cooling system.
3rd, the present invention allow electromotor to run with more stably output so that electromotor closer be operated in optimal
On oil consumption point, the oil consumption of electromotor can be reduced.
4th, the present invention not only increases the available horsepower of well drilling hoist it is ensured that working performance, also acts to drilling well electricity
The effect of load peak load shifting, provides buffer protection for electrical network.
Brief description
Fig. 1 is double layer capacitor to be used as drilling well Frequency Convert System schematic diagram.
In figure, 1, commutator, 2, DC-DC converter, 3, brake chopper, 4, winch motor converter, 5, dc bus,
6th, brake resistor, 7, double layer capacitor, 8, winch motor, 9, drilling motor, 10, drilling tool motor inverter.
Specific embodiment
As shown in figure 1, during trip-out operation, drilling tool starts to be lifted from static, winch is converted to rotating forward from on-position and accelerates,
Winch motor converter 4 controls winch motor 8 to increase torque output, now connects double layer capacitor 7 on conducting direct current bus 5
DC-DC converter 2, double layer capacitor 7 discharges and provides big pulse electric energy for winch motor 8, increased the available of winch
Power, can meet the power demand during output of winch motor 8 high pulling torque.When well drilling hoist stops accelerating into hovering brake cabin
Have a rest, now double layer capacitor 7 stopping is allowed to discharge through dc bus 5 and is charged, fully charged rear wait next round lifting is made
The industry cycle；During tripping operation, drilling tool declines, and winch motor 8 brakes regenerative electric energy, and now conducting DC-DC converter 2 is electric double layer
Capacitor charges, and the electric energy of storage is available for the use of the equipment such as top drive during the winch working clearance.When double layer capacitor 7 is full of
Afterwards, disconnect DC-DC converter 2, turn on brake chopper 3, control brake resistor 6 to fall extra braking power consumption.
When drilling tool drops to correct position, drilling tool motor inverter 10 turns on, and drilling tool motor 9 is started working.
Double layer capacitor (electronic double layer capacitor) in the present invention, is to have high energy
The electrochemical capacitor of metric density, has the power density far above battery, has fast charging and discharging characteristic.Because well drilling hoist is
Intermittent work, the charging interval that work interval can meet double layer capacitor requires.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (4)
1. a kind of drilling well frequency changing driving system of use double layer capacitor, including connect drilling motor (9) drilling tool equipment, with
And realize described drilling tool equipment lifting and the winch of decentralization, outfit winch motor (8)；Described winch motor (8) and drilling motor
(9) pass through winch motor converter (4) respectively and drilling tool motor inverter (10) accesses the dc bus (5) of power supply function；
It is characterized in that, described dc bus (5) is upper to be connected to a double layer capacitor (7) by DC-DC converter (2).
2. according to claim 1 using double layer capacitor drilling well frequency changing driving system it is characterised in that described direct current
Brake resistor (6) is connected also by a brake chopper (3) on bus (5).
3. use double layer capacitor according to claim 1 or claim 2 drilling well frequency changing driving system it is characterised in that
Under startup and acceleration mode, described double layer capacitor (7) is used for described winch motor (8) to described winch motor (8)
Power supply；
Described winch motor (8) under release braking energy state, charged by dc bus (5) by described double layer capacitor (7).
4. according to claim 2 transducer drive well system drilling platforms it is characterised in that
Described winch motor (8), under release braking energy state, after double layer capacitor (7) is full of, disconnects DC-DC conversion
Device (2), conducting brake chopper (3), control brake resistor (6) to consume extra braking electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620975862.0U CN205986678U (en) | 2016-08-30 | 2016-08-30 | Use well drilling variable -frequency driving system of double layer capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620975862.0U CN205986678U (en) | 2016-08-30 | 2016-08-30 | Use well drilling variable -frequency driving system of double layer capacitor |
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| Publication Number | Publication Date |
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| CN205986678U true CN205986678U (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620975862.0U Active CN205986678U (en) | 2016-08-30 | 2016-08-30 | Use well drilling variable -frequency driving system of double layer capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947212A (en) * | 2017-12-29 | 2018-04-20 | 西安石油大学 | A kind of energy-storage system and recovery method formed based on ultracapacitor and storage battery |
-
2016
- 2016-08-30 CN CN201620975862.0U patent/CN205986678U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947212A (en) * | 2017-12-29 | 2018-04-20 | 西安石油大学 | A kind of energy-storage system and recovery method formed based on ultracapacitor and storage battery |
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