CN208153657U - The frequency converter of speed-increasing hydraulic coupler - Google Patents
The frequency converter of speed-increasing hydraulic coupler Download PDFInfo
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- CN208153657U CN208153657U CN201721505044.5U CN201721505044U CN208153657U CN 208153657 U CN208153657 U CN 208153657U CN 201721505044 U CN201721505044 U CN 201721505044U CN 208153657 U CN208153657 U CN 208153657U
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Abstract
A kind of frequency converter of speed-increasing hydraulic coupler, belongs to fluid-flywheel clutch technical field.The purpose of this utility model is not change speed-increasing hydraulic coupler overall structure, keeps speed-increasing hydraulic coupler overall structure motionless.Speed-increasing hydraulic coupler is transformed into the step-up gear connected by fluid coupling.This is the variable-frequency control technique of speed-increasing hydraulic coupler.The theory innovation point of the utility model is, under conditions of working oil chamber internal-filling liquid amount keeps maximum and load characteristic constant between acceleration type coupling device pump impeller and turbine, change fluid-flywheel clutch input speed, also input, the output characteristics of fluid-flywheel clutch are just changed, to achieve the purpose that adjust fluid-flywheel clutch output power and revolving speed.Here it is the theoretical basis of speed-increasing hydraulic coupler variable-frequency control technique transformation.The good effect of the utility model is to solve speed-increasing hydraulic coupler to deviate declared working condition, low efficiency, and the high drawback of energy consumption realizes speed-increasing hydraulic coupler freguency control reform through the invention, achievees the purpose that economize on electricity 20%, for industry energy conservation consumption reduction service.
Description
Technical field
The utility model belongs to fluid-flywheel clutch technical field.
Background technique
Power plant boiler electrically driven feed pump is mostly speed-increasing hydraulic coupler driving and speed regulation.Speed-increasing hydraulic coupler
Main function is first is that speedup, second is that speed regulation.Its main structure is substantially coupling device cabinet, speed increasing gear, the shaft-driven profit of input
Oil pump and work oil pump, electronic auxiliary oil pump, pump impeller, turbine, working oil chamber, scoop tube, speed adjusting gear, working oil path system,
The composition such as lubricant passage way system, fuel tank, working oil oil cooler, lubricating oil oil cooler, bitubular strainer.
The speed regulating method of speed-increasing hydraulic coupler is volumetric speed control method.So-called volumetric speed control method（Scoop tube speed regulation）Refer to liquid
Under conditions of couple clutch pump impeller revolving speed and load characteristic are all constant, change between coupling pump impeller and turbine in working oil chamber
Filling amount, also just changes the input-output characteristic of fluid-flywheel clutch, adjusts fluid-flywheel clutch output power to reach and turns
The purpose of speed, here it is fluid-flywheel clutch volumetric speed control methods.Namely scoop tube speed regulation method.
Power transfer between motor and fore pump, fluid-flywheel clutch and feed pump is completed by shaft coupling.Acceleration type
The transfer mode of the power of fluid-flywheel clutch is that motor passes to speed-increasing hydraulic coupler with 1490r/min constant speed and inputs
Axis discusses design speed through speed increasing gear speedup to pump and is transferred to pump impeller, and pump impeller is under the driving of pump impeller shaft with pump impeller design speed
Constant speed operation, transmits power by working oil between pump impeller and turbine, the torque of motor passes to pump impeller, pump impeller by speed increasing gear
Accelerate working oil and pump impeller torque is converted into the kinetic energy of working oil, working oil pushes turbine rotation to convert kinetic energy into turbine
Torque drags water supply pump operation.Fluid-flywheel clutch output power and revolving speed are by the filling liquid between pump impeller and turbine in working oil chamber
What amount was adjusted, the filling amount of working oil chamber is controlled by adjusting scoop tube position.
Speed-increasing hydraulic coupler delivery efficiency is equal to rotating ratio.When rated output full-load run, acceleration type fluid coupling
Device operational efficiency highest, therefore speed-increasing hydraulic coupler is only applicable to full-load run operating condition.In-service generating set load is root
It needs to be scheduled according to power grid, annual rate of load condensate is generally between 60~75%.The speed-increasing hydraulic coupler of in-service operation
Scoop tube aperture was generally 60% hereinafter, never reached 100%, and always far from 100%, often inefficient section is transported below 60%
Row.Fluid-flywheel clutch efficiency is in terms of 97.63%, and scoop tube is averaged aperture in terms of 60%, and fluid-flywheel clutch operational efficiency only has 58.58%,
Its space of economizing on electricity is up to 39%.This traditional transmission technology of speed-increasing hydraulic coupler, under the conditions of deviateing full-load run, low efficiency,
Energy consumption is high, is its maximum drawback.
Summary of the invention
The purpose of this utility model is not change speed-increasing hydraulic coupler overall structure, keeps speed-increasing hydraulic coupler
Overall structure is motionless.Speed-increasing hydraulic coupler is transformed into the step-up gear connected by fluid coupling.This is speedup
The frequency converter of type fluid-flywheel clutch.
The theory innovation point of the utility model is that working oil chamber internal-filling liquid amount is protected between acceleration type coupling device pump impeller and turbine
Hold maximum and load characteristic it is constant under conditions of, change fluid-flywheel clutch input speed, also just change the defeated of fluid-flywheel clutch
Enter, output characteristics, to achieve the purpose that adjust fluid-flywheel clutch output power and revolving speed.Here it is speed-increasing hydraulic couplers
The theoretical basis of variable-frequency control technique transformation.
The utility model fundamentally changes fluid-flywheel clutch power transfer mode.Specifically by acceleration type fluid coupling
Device is changed to the step-up gear connected by fluid coupling.Solution is to maintain pump impeller and turbine oil pocket oil-filled quantity most
Greatly.Scoop tube is fixed on 100%, and pump impeller is relatively fixed with turbine, and slip is minimum, and efficiency highest, fluid-flywheel clutch is at liquid at this time
Power shaft coupling.Speed-increasing hydraulic coupler is at the step-up gear connected by fluid coupling.Motor and high pressure open circuit
Increase a frequency converter and its power frequency bypath system between device.Motor is given with frequency control way transmitting power to be joined by fluid power
The step-up gear of axis device connection, and then the step-up gear connected by fluid coupling transmits power to feed pump.
The core technology of the utility model is that speed-increasing hydraulic coupler is transformed into the increasing connected by fluid coupling
Fast gear-box.Also fluid-flywheel clutch is transformed into fluid coupling.A mating height between high-voltage circuitbreaker and motor
Voltage frequency changer, by changing frequency converter frequency, to realize the frequency conversion of the step-up gear input shaft connected by fluid coupling
Speed governing operation realizes that the frequency control of the step-up gear connected by fluid coupling is run, and then realizes the change of feed pump
Frequency speed governing operation.
The good effect of the utility model is to solve speed-increasing hydraulic coupler to deviate declared working condition, low efficiency, energy consumption height
The drawbacks of, speed-increasing hydraulic coupler freguency control reform is realized by the utility model, achievees the purpose that economize on electricity 20%, for enterprise
The energy-saving service of industry.
Detailed description of the invention
Fig. 1 is the utility model fore pump, motor, speed-increasing hydraulic coupler, feed pump connection schematic diagram；
Fig. 2 is the utility model speed-increasing hydraulic coupler structural schematic diagram；
Fig. 3 is pump impeller and turbine structure schematic diagram inside the utility model speed-increasing hydraulic coupler.
Specific embodiment
Speed-increasing hydraulic coupler is transformed into the step-up gear connected by fluid coupling.Specific embodiment is
Oil-filled quantity maximum in pump impeller and turbine oil pocket is kept, slip is minimum, and efficiency highest, i.e. scoop tube are fixed on 100%.At this point,
Pump impeller is relatively fixed with turbine, and fluid-flywheel clutch is at fluid coupling（Attached drawing 3）.Speed-increasing hydraulic coupler is at passing through liquid
The step-up gear of power shaft coupling connection（Attached drawing 2）.
The utility model increases a change on the basis of above-mentioned solution between motor 2 and high-voltage circuitbreaker 6
Frequency device 7 and its power frequency bypath system 8 realize the frequency control of motor, realize the speed increasing gear connected by fluid coupling
The frequency control of case, and then realize the frequency control of feed pump.
Increase a frequency converter 7 and its power frequency bypath system 8 between the utility model motor 2 and high-voltage circuitbreaker 6, it is high
Voltage source 5 is connect with high-voltage circuitbreaker 6；2 one end of motor is connect with fore pump 1, the input of the other end and step-up gear 3
Axis 9 connects, and 3 rear end of step-up gear is connected on feed pump 4；12 aperture 100% of scoop tube inside step-up gear 3, increases simultaneously
Liquid is full of in pump impeller 11 and turbine 12 inside fast gear-box 3.
The utility model is described in further detail below：
The theory innovation point of the utility model is that working oil chamber internal-filling liquid amount is protected between acceleration type coupling device pump impeller and turbine
Hold maximum and load characteristic it is constant under conditions of, change fluid-flywheel clutch input speed, also just change the defeated of fluid-flywheel clutch
Enter, output characteristics, to achieve the purpose that adjust fluid-flywheel clutch output power and revolving speed.Here it is speed-increasing hydraulic couplers
The theoretical basis of freguency control reform.The blank of hydraulic power technology has been filled up in this theory innovation.Finish acceleration type fluid power
Coupling device cannot start speed-increasing hydraulic coupler and the energy conservation of frequency converter use in conjunction is dropped with the history of frequency converter connected applications
New era of consumption.
The utility model fundamentally changes fluid-flywheel clutch power transfer mode, is detailed in attached drawing 1, attached drawing 2, attached drawing 3.
Speed-increasing hydraulic coupler is specifically passed through into fluid coupling instead（Attached drawing 3）The step-up gear of connection（Attached drawing 2）.It solves
Scheme is to maintain pump impeller（The 10 of attached drawing 2,3）With turbine（The 11 of attached drawing 2,3）Working oil chamber oil-filled quantity is maximum（Attached drawing 2,3 scoop tubes
12 are fixed on 100%）, pump impeller（The 10 of attached drawing 2,3）With turbine（The 11 of attached drawing 2,3）Relatively fixed, slip is minimum, and efficiency is most
Height, i.e. scoop tube（The 12 of attached drawing 2,3）It is fixed on 100%, fluid-flywheel clutch is at fluid coupling at this time（Attached drawing 3）.Acceleration type liquid
Couple clutch is at the step-up gear connected by fluid coupling（Attached drawing 13, attached drawing 2）.Motor (the 2 of attached drawing 1) with
Increase a frequency converter between high-voltage circuitbreaker (the 6 of attached drawing 1)（The 7 of attached drawing 1）And its power frequency bypath system（The 8 of attached drawing 1）, electricity
Motivation（The 2 of attached drawing 1）The step-up gear connected by fluid coupling is given with frequency control way transmitting power（Attached drawing 1 it
3）, and then the step-up gear connected by fluid coupling（The 3 of attached drawing 1）Power is transmitted to feed pump（The 4 of attached drawing 1）.
The core technology of the utility model is that speed-increasing hydraulic coupler is transformed into the increasing connected by fluid coupling
Fast gear-box（Attached drawing 2）.Also fluid-flywheel clutch is transformed into fluid coupling（Attached drawing 3）.In high-voltage circuitbreaker（Attached drawing 1 it
6）With motor（The 2 of attached drawing 1）Between a mating high-voltage frequency converter（The 7 of attached drawing 1）, by changing frequency converter frequency, with reality
The step-up gear input shaft now connected by fluid coupling（The 9 of attached drawing 1, attached drawing 2）Frequency control operation, realization passes through
The step-up gear of fluid coupling connection（Attached drawing 13, attached drawing 2）Frequency control operation, and then realize feed pump（Attached drawing 1
4）Frequency control operation.
Working oil chamber internal-filling liquid amount keeps maximum between speed-increasing hydraulic coupler pump impeller and turbine and load characteristic is constant
Under conditions of, change speed-increasing hydraulic coupler input speed, input, the output for also just changing speed-increasing hydraulic coupler are special
Property, to achieve the purpose that adjust speed-increasing hydraulic coupler output power and revolving speed.Under the guidance of this innovation theory：
Speed-increasing hydraulic coupler is transformed into the step-up gear connected by fluid coupling.Specific embodiment is
Oil-filled quantity maximum in pump impeller and turbine oil pocket is kept, slip is minimum, and efficiency highest, i.e. scoop tube are fixed on 100%.At this point,
Pump impeller is relatively fixed with turbine, and fluid-flywheel clutch is at fluid coupling（Attached drawing 3）.Speed-increasing hydraulic coupler is at passing through liquid
The step-up gear of power shaft coupling connection（Attached drawing 2）.
A mating high-voltage frequency converter and its power frequency bypath system between high-voltage circuitbreaker and motor are become by changing
The frequency control of frequency device frequency, the step-up gear connected with to realize speed-increasing hydraulic coupler by fluid coupling is run,
And then realize the frequency control operation of feed pump.
Input shaft-driven grease pump, work oil pump（Attached drawing 2）, with input shaft frequency control operation, frequency control is transported
Row by calculating and test, determines the minimum setpoint frequency of frequency converter, sets electronic give to keep lubrication pressure and work oil mass
Water pump group minimum operation revolving speed, to ensure converting operation operating condition, lubrication pressure is in normal allowed band, it is ensured that converting operation work
Condition, work oil mass meet the needs of transmitting power.
The starting oil pump that former electronic auxiliary oil pump is run as frequency control.Electronic auxiliary oil pump is automatically stopped（Lubricating oil
Pressure reaches setting value）Afterwards, by the motor minimum speed set through frequency converter, lubrication pressure is kept within the allowable range.
The application of the utility model is the base in the same fluid-flywheel clutch power frequency constant speed input volumetric speed control method of operation
On plinth；Increase a frequency control input frequency control method of operation, makes same fluid-flywheel clutch that there is volumetric speed control（Scoop tube
Speed regulation）With two kinds of methods of operation of frequency control.And two kinds of methods of operation can be with the work frequency conversion switch type fluid coupling of switchover operation
Device.
The utility model has been successfully applied to the near coal-mine Power Generation Corporation Ltd. in the Tongliao river Huo Lin, No. 2 machines（600MW）1,2
In number feed pump speed-increasing hydraulic coupler freguency control reform.This application is the utility model 600MW unit electricity at home
Dynamic feed pump freguency control reform is initiated.Securely and reliably, convenient, flexible, economize on electricity is significant, and retrofit work amount is minimum, and the duration is most
Short, cost performance highest, the investment payback time is most short.
The utility model is characterized in that：
（1）Same fluid-flywheel clutch has power frequency constant speed（I.e. motor 1490r/min constant speed is run）Input, volume
Speed regulation（It is adjusted the speed with scoop tube）When, it is the variable speed fluid coupling method of operation；Frequency control（Motor frequency change speed regulation fortune
Row）Input is the step-up gear method of operation, two kinds of methods of operation can be with switchover operation, a fortune one when scoop tube is fixed on 100%
The new and effective extraordinary transmission new technology of standby mutual backup.
（2）When frequency control, scoop tube is fixed on 100%, and pump impeller and turbine oil pocket internal-filling liquid amount are fixed on best filling liquid
Amount, slip is minimum, efficiency highest, and turbine and pump impeller become fluid coupling, relatively fixed, plays shaft coupling, acceleration type
Fluid-flywheel clutch is at this time at the step-up gear connected by fluid coupling.
（3）Within the scope of frequency control, speed-increasing hydraulic coupler remains that speed-increasing hydraulic coupler passes through fluid power
The step-up gear method of operation of shaft coupling connection is constant, remains that permanent efficient operation is constant.
（4）Two kinds of prime mover driven modes, the i.e. driving of power frequency constant speed and frequency control driving are adapted to, two kinds of driving methods can
Mutually to switch.The driving of power frequency constant speed corresponds to speed-increasing hydraulic coupler, and it is even that frequency control driving corresponds to acceleration type fluid power
The step-up gear that clutch is connected by fluid coupling.
（5）When full-load run, power frequency constant speed is preferably used to input（Volumetric speed control）Occasionally meeting device mode is run acceleration type fluid power；It is negative
Lotus rate preferably uses frequency control input step-up gear method of operation operation in 90% and following operation.
The utility model becomes suitable for 150MW 200MW 300MW 600MW Steam Turbine electrically driven feed pump fluid-flywheel clutch
Frequency modulation speed technological transformation.Power saving rate is general up to 15~30% with rate of load condensate difference after transformation.
Claims (2)
1. a kind of frequency converter of speed-increasing hydraulic coupler, it is characterised in that：Motor（2）With high-voltage circuitbreaker（6）
Between increase a frequency converter（7）And its power frequency bypath system（8）, high voltage power supply（5）With high-voltage circuitbreaker（6）Connection；It is electronic
Machine（2）One end and fore pump（1）Connection, the other end and step-up gear（3）Input shaft（9）Connection, step-up gear（3）Afterwards
End is connected to feed pump（4）On；Step-up gear（3）Internal scoop tube（12）Aperture 100%, while step-up gear（3）It is internal
Pump impeller（10）And turbine（11）Interior liquid is full of.
2. the frequency converter of speed-increasing hydraulic coupler according to claim 1, it is characterised in that：By acceleration type liquid
Couple clutch replaces with the step-up gear connected by fluid coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505044.5U CN208153657U (en) | 2017-11-13 | 2017-11-13 | The frequency converter of speed-increasing hydraulic coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505044.5U CN208153657U (en) | 2017-11-13 | 2017-11-13 | The frequency converter of speed-increasing hydraulic coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208153657U true CN208153657U (en) | 2018-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721505044.5U Active CN208153657U (en) | 2017-11-13 | 2017-11-13 | The frequency converter of speed-increasing hydraulic coupler |
Country Status (1)
| Country | Link |
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| CN (1) | CN208153657U (en) |
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2017
- 2017-11-13 CN CN201721505044.5U patent/CN208153657U/en active Active
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