CN104695852A - Pneumatic multi-motor coal-bed drill with hybrid power device - Google Patents
Pneumatic multi-motor coal-bed drill with hybrid power device Download PDFInfo
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- CN104695852A CN104695852A CN201510041648.8A CN201510041648A CN104695852A CN 104695852 A CN104695852 A CN 104695852A CN 201510041648 A CN201510041648 A CN 201510041648A CN 104695852 A CN104695852 A CN 104695852A
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Abstract
The invention discloses a pneumatic multi-motor coal-bed drill with a hybrid power device, and belongs to the field of machinery. The pneumatic multi-motor coal-bed drill comprises a diesel engine, a controller, five frequency changers, five motors, five safety valves, four one-way valves, and five two-position two-port proportional valves, wherein the diesel engine is connected with an electric generator, and the diesel engine and the five two-position two-port proportional valves are respectively connected with the controller. The pneumatic multi-motor coal-bed drill is characterized in that the electric generator is connected with a power distribution unit and an electrical storage device respectively; the electric generator generates electricity and supplies the electricity to dragging motors of hydraulic pumps, and surplus electricity is stored in the electrical storage device. According to the pneumatic multi-motor coal-bed drill, through the frequency changers, the speed of the motor of each hydraulic pump of the main hydraulic system of the dragging drill is regulated; the independent control of an inlet and an outlet and a flow regenerating technique are adopted in the lifting system of the main hydraulic system; a secondary-regulation hydro-static transmission technique is adopted in a hydraulic system of a winch, so that energy recovery and recycle are realized; a double-way variable pump-double-way variable motor closed-volume speed regulating loop is adopted in a hydraulic system for rotation of a power head, so that the efficiency of the hydraulic systems is improved.
Description
Technical field
The invention belongs to mechanical field, be specifically related to a kind of all-hydraulic coal bed gas drilling machine equipment with mixed power plant, specifically there is serial mixed power device and adopt the all-hydraulic coal bed gas drilling machine of frequency control and Energy Recovery Technology.
Background technology
Coal bed gas belongs to the Unconventional forage from being conigenous storage formula.Exploitation has independent intellectual property right coal bed gas drilling machine to the imbalance between supply and demand alleviating the energy, and the energy strategy of the Implement of sustainable development has very important realistic meaning.
Existing coal bed gas drilling machine take Diesel engine as power set, and power is transferred to multiple stage hydraulic pump by transfer case, is that hydraulic energy carries out rig operation by changes mechanical energy.Operationally, greatly, when this works with coal bed gas drilling machine, operating mode is changeable relevant, as duty has in load change for complete machine hydraulic system: rig lifting, derrick landing, make a trip, creep into, back reaming, upper shackle and rig tool etc.During various operating mode, load change greatly.For meeting the requirement of complete machine dynamic property, configure Diesel engine not only installed power be large, and be always operating at high speed area, thus make when the little load behavior of rig, engine fuel economy is poor, simultaneously due to changing load, Diesel engine working speed can be caused to fluctuate comparatively large, cause diesel engine fuel-firing consumption to increase.
At present realize machine energy-saving consumption reduction in engineering machinery field, mainly contain and adopt the hydraulic systems and components of efficient energy-saving, adopt there is economic low emission advanced diesel engine power device, follow the tracks of load change tread and regulate Diesel engine throttle aperture to realize rotary speed of diesel engine steady operation in power-saving technologies such as economical and efficient districts.But only adopt Hydraulic Elements and the system of efficient energy-saving, the Diesel engine mated for meeting peak load requirements, then when easily appearing at most operating mode, Diesel engine works in the high rate of fuel consumption district of the little load of high rotating speed, machine energy-saving poor effect.Realize rotary speed of diesel engine by dynamic conditioning Diesel engine throttle aperture and be stabilized in economical and efficient district, the power match of Diesel engine and load can be realized to a certain extent, improve economy, but it is violent because load changes for the coal bed gas drilling machine with many pumps multiloop hydraulic system, and the response lag of diesel engine flywheel, throttle dynamic adjustments easily makes Diesel engine oil consumption increase on the contrary, discharge performance is deteriorated, if so adopt mixed power plant in coal bed gas drilling machine, then be conducive to stable Diesel engine load, optimize Diesel engine operation interval, reduce complete machine fuel consume and noxious emission.
Hybrid power type of drive mainly contains two kinds: serial mixed power drives and parallel type hybrid dynamic drives.For coal bed gas drilling machine, there is many pumps multiloop hydraulic system, each loop load intrinsic speed property difference is larger, in order to realize the power match of complete machine, in order to realize the power match of complete machine, first the economical and efficient of hydraulic system is required, inevitable requirement is to the rotating speed of main hydraulic system liquid press pump, the real-time control of discharge capacity, because parallel type hybrid dynamic mode is that motor and motor drive dynamical element jointly, for coal bed gas drilling machine split-pump hydraulic system, because transfer gear power coupling unavoidably can produce interference to the working speed of each hydraulic pump, influential system efficiency, therefore parallel type hybrid dynamic mode is not suitable for coal bed gas drilling machine, think fully realize Diesel engine economical and efficient run, stablize Diesel engine load, realize accurately controlling main hydraulic system pump performance, realize hydraulic system and drive motor is energy-efficient, make complete machine economical operation efficient work.
summary of the invention:
Problem to be solved by this invention is the matching problem of hydraulic system and engine power, makes both fully realize power optimum Match, thus reaches energy-saving and cost-reducing object.
The present invention, by Diesel engine drive electrical generators, realizes Diesel engine load, stabilization of speed, works in economical and efficient district.
Generator generate electricity and supply the dragging motor of each hydraulic pump, unnecessary electric energy is stored in electrical storage device; The electric machine speed regulation realized dragging rig main hydraulic system hydraulic pump by frequency converter is controlled.Adopt in the hoisting system of main hydraulic system and import and export independent control and flow regeneration techniques.
In winch hydraulic system of working, adopt secondary adjusting hydrostatic drive technology to realize energy regenerating and re-using, in unit head rotary work hydraulic system, adopt two-way variable displacement pump-double-action variable displacement motor enclosed volume speed-modulating loop, improve hydraulic system efficiency; Adopt individual motor type of drive at each major loop of hydraulic system, be beneficial to and eliminate load coupling and cause the interference to hydraulic pump rotating speed, be easy to realize related control strategies.
Technical scheme of the present invention:
Have the coal bed gas drilling machine of mixed power plant and multi-motor driving, comprise Diesel engine, Diesel engine is with rated speed steady operation, and drawing generator work exports electric energy, and electric energy mainly supplies motor work, and unnecessary electric energy is stored in electrical storage device.
Controller controls the supply frequency output of the first frequency converter, the second frequency converter, the 3rd frequency converter, the 4th frequency converter, the 5th frequency converter according to corresponding control strategy, makes the first motor, the second motor, three-motor, the 4th motor, the 5th motor respectively with corresponding rotary speed working.
First motor run constant-pressure variable hydraulic pump works, constant-pressure variable hydraulic pump, the first one way valve, accumulator composition constant pressure source, constant-pressure variable hydraulic pump oil-out and electrohydraulic proportion variable hydraulic pump-motors, the hydraulic energy that constant-pressure variable hydraulic pump exports is converted into mechanical energy at electrohydraulic proportion variable hydraulic pump-motor and exports and drive winch to rotate by the first reducer, and winch rotary speed changes electric-hydraulic proportion hydraulic pump-motor swashplate inclination angle by variable device and controls.
When winch inverted running, controller exports control signal to the variable device of electrohydraulic proportion variable hydraulic pump-motor configurations, change the swashplate angle zero crossing of electrohydraulic proportion variable hydraulic pump-motor, make electrohydraulic proportion variable hydraulic pump-motor operations in hydraulic pump operating mode, to accumulator input high pressure liquid force feed.
The speed probe being configured in winch rotating shaft place is in real time to the tach signal of controller feedback winch, if rotating speed is too high, then controller controls the variable device of electrohydraulic proportion variable hydraulic pump-motor to the motion of increase discharge capacity direction; Otherwise then reduce discharge capacity, effectively control winch and reversely rotate speed.
Electrohydraulic proportion variable hydraulic pump-motor operations at pump condition time, controller controls the out-put supply frequency of the first frequency converter, reduces the rotating speed of constant-pressure variable hydraulic pump dragging motor one, reduces energy consumption.
Second frequency converter output frequency is the power supply of alternating current as the second motor of 50Hz.Second motor output shaft and the first variable delivery hydraulic pump shaft are connected, and the second motor drives variable delivery hydraulic pump work with rated speed, and the first volume adjustable hydraulic pump and constant displacement hydraulic motor form enclosed volume speed-modulating loop.The oil-out of the first volume adjustable hydraulic pump is connected with constant displacement hydraulic motor, and output shaft and the pump shaft of constant displacement hydraulic motor are connected, and drives pump working.
Output shaft and the electric liquid two-way proportional variable delivery hydraulic pump shaft of three-motor are connected, electricity liquid two-way proportional volume adjustable hydraulic pump two hydraulic fluid port is connected with two hydraulic fluid ports of bidirectional variable hydraulic motor respectively, composition enclosed volume speed-modulating loop, bidirectional variable hydraulic motor and the second reducer input shaft are connected, second reducer output shaft and rotary power head are connected, be assemblied in the pressure sensor of electric liquid two-way proportional volume adjustable hydraulic pump oil port, be assemblied in the swash plate sensor on this pump, be assemblied in the speed probe at three-motor output shaft place and be assemblied in the speed probe Real-time Feedback pressure at the second reducer output shaft place, swashplate angle, the rotating speed of motor, the rotating speed of rotary power head is to controller, controller is according to control overflow, the out-put supply frequency and the motion of electrohydraulic proportion variable hydraulic pump variable device that control the 3rd frequency converter change swashplate angle, realize motor power (output) to match with bearing power as far as possible, improve system effectiveness.
Output shaft and the electrohydraulic proportion variable hydraulic pump shaft of the 5th motor are connected, the oil-out of electrohydraulic proportion variable hydraulic pump and the first bi-bit bi-pass proportioning valve, a valve port of the second bi-bit bi-pass proportioning valve is connected, another valve port of first bi-bit bi-pass proportioning valve is connected with lifting hydraulic cylinder rod chamber, second another valve port of bi-bit bi-pass proportioning valve is connected with lifting hydraulic cylinder rodless cavity, a valve port of the 3rd bi-bit bi-pass proportioning valve another valve port that is connected with fuel tank is connected with the rod chamber of lifting hydraulic cylinder, a valve port of the 4th bi-bit bi-pass proportioning valve another valve port that is connected with fuel tank is connected with the rodless cavity of lifting hydraulic cylinder.Namely above-mentioned four the bi-bit bi-pass proportioning valve spool displacement amounts of controller output signal control realize the control to valve port opening, thus realize importing and exporting independent control to lifting hydraulic cylinder, realize the control to the lifting hydraulic cylinder direction of motion and speed.
Be assemblied in the speed probe at the 5th motor output shaft place, be assemblied in the pressure sensor Real-time Feedback pressure signal at swashplate angle sensor on electrohydraulic proportion variable hydraulic pump and oil-out place, swashplate angle signal, tach signal to controller, the spool displacement amount of comprehensive first bi-bit bi-pass proportioning valve, the second bi-bit bi-pass proportioning valve, the 3rd bi-bit bi-pass proportioning valve, the 4th bi-bit bi-pass proportioning valve, control the motion of electrohydraulic proportion variable hydraulic pump variable device, determine pump delivery.Two hydraulic fluid ports of the 5th bi-bit bi-pass proportioning valve are connected respectively at two chambeies of lifting hydraulic cylinder, when hydraulic cylinder piston declines, controller controls the first bi-bit bi-pass proportioning valve, the second bi-bit bi-pass proportioning valve, the 3rd bi-bit bi-pass proportioning valve valve port cut out, 5th bi-bit bi-pass proportioning valve valve port standard-sized sheet, 4th bi-bit bi-pass proportioning valve valve port part is opened, and realizes flow regeneration.Control the 5th frequency converter out-put supply frequency with Time Controller, reduce the working speed of the 5th motor, realize energy-conservation.
4th frequency converter output frequency is the power supply of alternating current as the 4th motor of 50Hz, output shaft and the auxiliary transfer gear power shaft of the 4th motor are connected, auxiliary transfer gear output shaft is connected with quantitative hydraulic pump and the second volume adjustable hydraulic pump respectively, the outlet pressure of quantitative hydraulic pump is determined, as slippage pump by overflow valve set pressure.Second volume adjustable hydraulic pump oil-out is connected with attached hydraulic system, provides hydraulic energy.
the present invention has following beneficial effect:
1, adopt serial mixed power device, Diesel engine can run continuously in most economical operating point, stabilization of speed, is beneficial to Diesel engine and is operated in economical and efficient district, is also conducive to reducing noxious emission.
2, many motor driving systems are adopted, variable-frequency control technique can be used for coal bed gas drilling machine hydraulic system, each motor speed can be regulated according to the change of the load characteristic in loop each in hydraulic system, thus change hydraulic pump rotating speed, the power output of each motor and corresponding hydraulic circuit bearing power is made to reach Automatic adjusument, reduce power attenuation, improve system effectiveness.Remove transfer gear in total transmission system, the rotating speed interference that in existing system, load coupling causes can also be avoided, relax hydraulic shock.
3, in coal bed gas drilling machine main hydraulic system, in hoister system, adopt electrohydraulic proportion variable hydraulic pump-motor secondary component, when realizing reversely rotating winch, potential energy reclaims, and improves system effectiveness.In coal bed gas drilling machine main hydraulic system lifting hydraulic cylinder system, utilize five bi-bit bi-pass proportioning valves to realize importing and exporting the regeneration of independent sum flow to lifting hydraulic cylinder, in conjunction with electrohydraulic proportion variable hydraulic pump, reduce energy loss, realize energy regenerating, improve system effectiveness.In water pump hydraulic system and unit head rotary system, adopt enclosed volumetric speed control hydraulic circuit, reduce energy ezpenditure, improve system effectiveness.
4, adopt energy regenerating, high efficient and energy saving hydraulic loop and element, variable-frequency control technique etc., the installed power of Diesel engine can be effectively reduced, and this compensates serial mixed power device due to the energy most effective measures that repeatedly transformation efficiency is not high.
Accompanying drawing explanation
Fig. 1 is the structure diagram that the present invention has the multi-motor driving dynamical system of mixed power plant.
In figure, 1-Diesel engine; 2-generator; 3-electrical storage device; 4-electric power source distribution device; 5-the first frequency converter; 6-the first motor; 7-the first one way valve; 8-accumulator; 9-electrohydraulic proportion variable hydraulic pump-motor; 10-winch; 11-the first reducer; 12-the first safety valve; 13-constant pressure variable displacement pump; 14-the second frequency converter; 15-the second motor; 16-the first volume adjustable hydraulic pump; 17-the second safety valve; 18-water pump; 19-constant displacement hydraulic motor; 20-the three frequency converter; 21-the three-motor; 22-electric liquid two-way proportional volume adjustable hydraulic pump; 23-the three safety valve; 24-the second one way valve; 25-the four safety valve; 26-controller; 27-the three one way valve; 28-rotary power head; 29-the four one way valve; 30-overflow valve; 31-auxiliary transfer gear; 32-the four motor; 33-the four frequency converter; 34-auxiliary hydraulic system; 35-quantitative hydraulic pump; 36-the second volume adjustable hydraulic pump; 37-the first bi-bit bi-pass proportioning valve; 38-bidirectional variable hydraulic motor; 40-the second bi-bit bi-pass proportioning valve; 41-the four bi-bit bi-pass proportioning valve; 42-the five bi-bit bi-pass proportioning valve; 43-the five safety valve; 44-electrohydraulic proportion variable hydraulic pump; 45-lifting hydraulic cylinder; 46-the five motor; 47-the five frequency converter; 48-the three bi-bit bi-pass proportioning valve; 50-the second reducer.
detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is further described.
Freewheel output and the generator (2) of Diesel engine (1) are connected, with economic speed steady operation, (Diesel engine of the present embodiment configuration is 1700 revs/min to Diesel engine (1), drawing generator (2) work exports electric energy, electric energy mainly supplies motor work, and unnecessary electric energy is stored in electrical storage device (3).First frequency converter (5) is connected with the first motor (6), 3rd frequency converter (20) is connected with three-motor (21), 5th frequency converter (47) is connected with the 5th motor (46), controller (26) controls the first frequency converter (5) according to corresponding control strategy, 3rd frequency converter (20), the supply frequency of the 5th frequency converter (47) exports, control the first motor (6), three-motor (21), 5th motor (46) is each with corresponding rotary speed working, second frequency converter (14) is connected with the second motor (15), 4th frequency converter (33) is connected with the 4th motor (32), second frequency converter (14) and the 4th frequency converter (33) output frequency 50Hz power supply, second motor (15), 4th motor (32) is all with rated speed work.
Output shaft and constant-pressure variable hydraulic pump (7) axle of the first motor (6) are connected, drag constant pressure variable displacement pump (13) work, constant-pressure variable hydraulic pump (13) oil-out is connected with electrohydraulic proportion variable hydraulic pump-motor (9) by the first one way valve (7), output shaft and the first reducer (11) power shaft of electrohydraulic proportion variable hydraulic pump-motor (9) are connected, and the first reducer (11) output shaft and winch (10) axle are connected.Constant-pressure variable hydraulic pump (13), the first one way valve (7) and accumulator (8) composition constant pressure oil source.The hydraulic energy that constant pressure variable displacement pump (13) exports is converted into mechanical energy at electrohydraulic proportion variable hydraulic pump-motor (9) and exports by the first reducer (11) drive winch (10) rotation, be assemblied in the speed probe at winch (10) axle place and electrohydraulic proportion variable hydraulic pump-motor (9) swashplate angle sensor Real-time Feedback winch rotary speed and swashplate angle signal to controller (26), when winch inverted running, controller (26) exports control signal to the variable device of electrohydraulic proportion variable hydraulic pump-motor (9), change the swashplate angle zero crossing of electrohydraulic proportion variable hydraulic pump-motor (9), electrohydraulic proportion variable hydraulic pump-motor (9) is made to work in hydraulic pump operating mode, to accumulator (8) input high pressure liquid force feed.
If rotating speed too high (such as 220 revs/min), controller (26) controls the variable device of electrohydraulic proportion variable hydraulic pump-motor (9) to the motion of increase discharge capacity direction, otherwise then reduces discharge capacity, effectively controls winch (10) and reversely rotates speed.When electrohydraulic proportion variable hydraulic pump-motor (9) is operated in pump condition, controller (26) controls the out-put supply frequency of the first frequency converter (5), reduces the rotating speed that constant-pressure variable hydraulic pump (13) drags the first motor (6), reduces energy consumption.First safety valve (12) plays overload protective function, the maximum pressure of restriction constant-pressure variable hydraulic pump (13).
Second frequency converter (14) output frequency is the power supply of alternating current as the second motor (15) of 50Hz.Second motor (15) output shaft and the first volume adjustable hydraulic pump (16) axle are connected, second motor (15) drives the first volume adjustable hydraulic pump (16) to work with rated speed, the oil inlet and outlet of the first volume adjustable hydraulic pump (16) is connected with two hydraulic fluid ports of constant displacement hydraulic motor (19), composition volume speed-modulating loop, quantitative hydraulic pump (35) by the first one way valve (24) to this loop repairing.Output shaft and water pump (18) axle of constant displacement hydraulic motor (19) are connected, and drive water pump (18) work.Second safety valve (17) plays overload protective function, limits the maximum pressure of the first volume adjustable hydraulic pump (16).
Output shaft and electric liquid two-way proportional volume adjustable hydraulic pump (22) axle of three-motor (21) are connected, electricity liquid two-way proportional volume adjustable hydraulic pump (22) two hydraulic fluid port is connected with two hydraulic fluid ports of bidirectional variable hydraulic motor (38) respectively, composition volume speed-modulating loop, quantitative hydraulic pump (35) by the 3rd one way valve (27), the 4th one way valve (29) to this loop repairing.
Be assemblied in the pressure of pressure sensor Real-time Feedback electricity liquid two-way proportional volume adjustable hydraulic pump (22) oil port of electric liquid two-way proportional volume adjustable hydraulic pump (22) oil port to controller (26);
Be assemblied in the swash plate sensor Real-time Feedback on electric liquid two-way proportional volume adjustable hydraulic pump (22)
The swash plate angle of inclination of electricity liquid two-way proportional volume adjustable hydraulic pump (22) is to controller (26);
Be assemblied in the rotating speed of speed probe Real-time Feedback three-motor (21) at three-motor (38) output shaft place to controller (26);
Bidirectional variable hydraulic motor (21) is connected by the second reducer (50) and rotary power head (28), is assemblied in speed probe Real-time Feedback rotary power head (28) rotating speed at the second reducer (50) output shaft place to controller (26);
When rotary power head (28) starts to creep into, variable hydraulic motor discharge capacity is maximum, controller (26) controls electrohydraulic proportion variable hydraulic pump (22) variable device motion change swashplate angle and increases its discharge capacity, when dynamic rotation head rotating speed is greater than setting speed, controller (26) is according to control overflow, the out-put supply frequency reducing the 3rd frequency converter (20) reduces three-motor (38) rotating speed and the motion of electrohydraulic proportion variable hydraulic pump (22) variable device and changes swashplate angle and increase its discharge capacity, thus improve three-motor (38) and electrohydraulic proportion variable hydraulic pump (22) efficiency, reduce energy consumption.
Controller (26) is according to control overflow, and the out-put supply frequency and the motion of electrohydraulic proportion variable hydraulic pump (22) variable device that control the 3rd frequency converter (20) change swashplate angle,
3rd safety valve (23), the 4th safety valve (25) play overload protective function.
Output shaft and electrohydraulic proportion variable hydraulic pump (44) axle of the 5th motor (46) are connected, the oil-out of electrohydraulic proportion variable hydraulic pump (44) and the first bi-bit bi-pass proportioning valve (37), a valve port of the second bi-bit bi-pass proportioning valve (40) is connected, another valve port of first bi-bit bi-pass proportioning valve (37) is connected with lifting hydraulic cylinder (45) rod chamber, second bi-bit bi-pass proportioning valve (40) another valve port is connected with lifting hydraulic cylinder rodless cavity (45), a valve port of the 3rd bi-bit bi-pass proportioning valve (48) another valve port that is connected with fuel tank is connected with the rod chamber of lifting hydraulic cylinder (45), a valve port of the 4th bi-bit bi-pass proportioning valve (41) another valve port that is connected with fuel tank is connected with the rodless cavity of lifting hydraulic cylinder (45).
Controller (26) output signal controls the control of above-mentioned four bi-bit bi-pass proportioning valve spool displacement amounts realization to valve port opening, thus realize importing and exporting independent control to lifting hydraulic cylinder (45), realize the control to lifting hydraulic cylinder (45) direction of motion and speed.
Be assemblied in the tach signal of the speed probe Real-time Feedback the 5th motor (46) at the 5th motor (46) output shaft place, and the 5th motor (46) tach signal delivered to controller (26),
Be assemblied in the swashplate angle signal of swashplate angle sensor Real-time Feedback electrohydraulic proportion variable hydraulic pump (44) on electrohydraulic proportion variable hydraulic pump (44), and electrohydraulic proportion variable hydraulic pump (44) swashplate angle signal delivered to controller (26),
Be assemblied in pressure sensor Real-time Feedback electrohydraulic proportion variable hydraulic pump (44) pressure signal at electrohydraulic proportion variable hydraulic pump (44) oil-out place, and electrohydraulic proportion variable hydraulic pump (44) pressure signal is delivered to controller (26);
The spool displacement amount of comprehensive first bi-bit bi-pass proportioning valve (37), the second bi-bit bi-pass proportioning valve (40), the 3rd bi-bit bi-pass proportioning valve (48), the 4th bi-bit bi-pass proportioning valve (41), control the motion of electrohydraulic proportion variable hydraulic pump (44) variable device, determine the discharge capacity of electrohydraulic proportion variable hydraulic pump (44).
Two hydraulic fluid ports of the 5th bi-bit bi-pass proportioning valve (42) are connected with two chambeies of lifting hydraulic cylinder (45) respectively, when lifting hydraulic cylinder piston declines, controller (26) controls the first bi-bit bi-pass proportioning valve (37), the second bi-bit bi-pass proportioning valve (40), the 3rd bi-bit bi-pass proportioning valve (48) valve port cut out, 5th bi-bit bi-pass proportioning valve (42) valve port standard-sized sheet, 4th bi-bit bi-pass proportioning valve (41) valve port part is opened, and realizes flow regeneration.Same Time Controller (26) controls the 5th frequency converter (47) out-put supply frequency, reduces the working speed of the 5th motor (46), realizes energy-conservation.5th safety valve (43) plays overload protective function.
4th frequency converter (33) output frequency is the power supply of alternating current as the 4th motor (32) of 50Hz, output shaft and auxiliary transfer gear (31) power shaft of the 4th motor (32) are connected, auxiliary transfer gear (31) output shaft is connected with quantitative hydraulic pump (35) and the second volume adjustable hydraulic pump (36) respectively, the outlet pressure of quantitative hydraulic pump (35) is determined, as slippage pump by overflow valve (30) set pressure.Second volume adjustable hydraulic pump (36) oil-out is connected with attached hydraulic system, provides hydraulic energy.
Illustrate: in the present embodiment, winch rotating speed 160 ~ 220rpm, controller model: German dspace ITI 1103.
Claims (6)
1. there is the coal bed gas drilling machine of mixed power plant and multi-motor driving, comprise Diesel engine (1), controller (26), 5 frequency converters, 5 motor, 5 safety valves, 4 one way valves, 5 bi-bit bi-pass proportioning valves, Diesel engine (1) connects generator (2), Diesel engine (1) and 5 bi-bit bi-pass proportioning valves connection control device (26) respectively, is characterized in that generator (2) connects electric power source distribution device (4), electrical storage device (3) respectively;
Electric power source distribution device (4) connects 5 frequency converters respectively; First frequency converter (5) connects the first motor (6), first motor (6) connects constant-pressure variable hydraulic pump (13), constant-pressure variable hydraulic pump (13) connects the first one way valve (7), the first safety valve (12) respectively, first safety valve (12) connects accumulator (8), electrohydraulic proportion variable hydraulic pump-motor (9) respectively, electrohydraulic proportion variable hydraulic pump-motor (9) connects the first reducer (11), the first reducer (11) connection winch (10);
Second frequency converter (14) connects the second motor (15), second motor (15) link variable hydraulic pump (16), volume adjustable hydraulic pump (16) connects the second safety valve (17), fixed displacement motor (19) respectively, and fixed displacement motor (19) connects water pump (18);
3rd frequency converter (20) connects three-motor (21), three-motor (21) connects electric liquid two-way proportional volume adjustable hydraulic pump (22), electricity liquid two-way proportional volume adjustable hydraulic pump (22) connects the 3rd safety valve (23), the 3rd one way valve (27), the 4th one way valve (29), the 4th safety valve (25), bidirectional variable hydraulic motor (38) respectively, bidirectional variable hydraulic motor (38) connects the second reducer (50), and the second reducer connects rotary power head (28);
4th frequency converter (33) connects the 4th motor (32), 4th motor (32) connects auxiliary transfer gear (31), auxiliary transfer gear (31) connects quantitative hydraulic pump (35), volume adjustable hydraulic pump (36) respectively, and quantitative hydraulic pump (35) connects overflow valve (30), between the 3rd one way valve (27) and the 4th one way valve (29) respectively; Volume adjustable hydraulic pump (36) connects auxiliary hydraulic system (34);
5th frequency converter (47) connects the 5th motor (46), 5th motor (46) connects electrohydraulic proportion variable hydraulic pump (44), electrohydraulic proportion variable hydraulic pump (44) connects the 5th safety valve (43), the first bi-bit bi-pass proportioning valve (37), the second bi-bit bi-pass proportioning valve (40) respectively, and the first bi-bit bi-pass proportioning valve (37) connects the 3rd bi-bit bi-pass proportioning valve (48), the 5th bi-bit bi-pass proportioning valve (42), lifting hydraulic cylinder (45) respectively; Second bi-bit bi-pass proportioning valve (40) is connected the 4th bi-bit bi-pass proportioning valve (41) with on the connecting line between lifting hydraulic cylinder (45);
Pipeline between pipeline between volume adjustable hydraulic pump (16) and fixed displacement motor (19), the 3rd one way valve (27), the 4th one way valve (29) installs the second one way valve (24).
2. there is the coal bed gas drilling machine of mixed power plant and multi-motor driving according to claim 1, it is characterized in that generator (2) generate electricity by electric power source distribution device (4) flow to each frequency converter with coupling frequency supply each motor, the each major loop of hydraulic system drives by independent motor, according to load characteristic and the control overflow adjustment motor speed in each loop.
3. according to the coal bed gas drilling machine described in claim 1 with mixed power plant and multi-motor driving, it is characterized in that utilizing the operating mode between electrohydraulic proportion variable hydraulic pump-motor (19) to switch and realize potential energy recovery when winch (10) reversion declines, same Time Controller (26) controls the out-put supply frequency of the first frequency converter (5), when realizing winch reversion decline, reduce the first motor (6) rotating speed, reduce energy loss.
4. according to the coal bed gas drilling machine described in claim 1 with mixed power plant and multi-motor driving, it is characterized in that output shaft and the first hydraulic variable displacement pump (16) axle of the second motor (15) are connected, the first hydraulic variable displacement pump (16) and constant displacement hydraulic motor (19) form enclosed volume speed-modulating loop.
5., according to the coal bed gas drilling machine described in claim 1 with mixed power plant and multi-motor driving, it is characterized in that electric liquid two-way proportional volume adjustable hydraulic pump (22) and bidirectional variable hydraulic motor (38) form enclosed volume speed-modulating loop, bidirectional variable hydraulic motor (38) output shaft and dynamic rotation head (28) are connected, be assemblied in the pressure sensor at swashplate angle sensor on electric liquid two-way proportional variable pump (22) and oil-out place, be assemblied in the speed probe at three-motor (21) output shaft place, be assemblied in the speed probe Real-time Feedback pressure at the second reducer (50) output shaft place, swashplate angle, motor speed, rotary power head tach signal is to controller (26), according to control overflow, controller (26) controls the power supply output frequency of the 3rd frequency converter (20) and the variable device motion of electrohydraulic proportion variable hydraulic pump (22), realize regulating the rotating speed control of three-motor (21) and the discharge capacity of electrohydraulic proportion variable hydraulic pump (22).
6. according to the coal bed gas drilling machine described in claim 1 with mixed power plant and multi-motor driving, it is characterized in that output shaft and electrohydraulic proportion variable hydraulic pump (44) axle of the 5th motor (46) are connected, the oil-out of electrohydraulic proportion variable hydraulic pump (44) and the first bi-bit bi-pass proportioning valve (37), a valve port of the second bi-bit bi-pass proportioning valve (40) is connected, another valve port of first bi-bit bi-pass proportioning valve (37) is connected with lifting hydraulic cylinder (45) rod chamber, second bi-bit bi-pass proportioning valve (40) another valve port is connected with lifting hydraulic cylinder (45) rodless cavity, a valve port of the 3rd bi-bit bi-pass proportioning valve (48) another valve port that is connected with fuel tank is connected with the rod chamber of lifting hydraulic cylinder (45), a valve port of the 4th bi-bit bi-pass proportioning valve (41) another valve port that is connected with fuel tank is connected with the rodless cavity of lifting hydraulic cylinder (45), namely above-mentioned four the bi-bit bi-pass proportioning valve spool displacement amounts of controller (26) output signal control realize the control to valve port opening, thus realize importing and exporting independent control to lifting hydraulic cylinder (45), realize the control to lifting hydraulic cylinder (45) direction of motion and speed, be assemblied in the speed probe at the 5th motor (46) output shaft place, be assemblied in the pressure sensor Real-time Feedback pressure signal at swashplate angle sensor on electrohydraulic proportion variable hydraulic pump (44) and oil-out place, swashplate angle signal, tach signal to controller (26), the spool displacement amount of comprehensive first bi-bit bi-pass proportioning valve (37), the second bi-bit bi-pass proportioning valve (40), the 3rd bi-bit bi-pass proportioning valve (48), the 4th bi-bit bi-pass proportioning valve (41), control the motion of electrohydraulic proportion variable hydraulic pump (44) variable device, determine pump delivery, two hydraulic fluid ports of the 5th bi-bit bi-pass proportioning valve (42) are connected respectively at two chambeies of lifting hydraulic cylinder (45), when hydraulic cylinder piston declines, controller (26) controls the first bi-bit bi-pass proportioning valve (37), the second bi-bit bi-pass proportioning valve (40), the 3rd bi-bit bi-pass proportioning valve (48) valve port cut out, 5th bi-bit bi-pass proportioning valve (42) valve port standard-sized sheet, 4th bi-bit bi-pass proportioning valve (41) valve port part is opened, and realizes flow regeneration, same Time Controller (26) controls the 5th frequency converter (47) out-put supply frequency, reduces the working speed of the 5th motor (46).
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| CN201510041648.8A CN104695852B (en) | 2015-01-28 | 2015-01-28 | There is the coal bed gas drilling machine of mixed power plant and multi-motor driving |
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| CN201510041648.8A CN104695852B (en) | 2015-01-28 | 2015-01-28 | There is the coal bed gas drilling machine of mixed power plant and multi-motor driving |
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Cited By (5)
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| CN105649639A (en) * | 2016-01-31 | 2016-06-08 | 太原理工大学 | Hybrid driving system of shield tunnel tunneling machine and control method thereof |
| CN108775299A (en) * | 2018-05-25 | 2018-11-09 | 太原理工大学 | A kind of rotary drilling rig of liquid electricity combination drive |
| CN111075346A (en) * | 2019-12-30 | 2020-04-28 | 无锡市钻通工程机械有限公司 | Non-excavation rig's electric-hydraulic hybrid drive system and non-excavation rig system |
| CN114776671A (en) * | 2022-04-19 | 2022-07-22 | 太原理工大学 | High-energy-efficiency hydraulic control system for mining shuttle car |
| CN115163618A (en) * | 2022-02-22 | 2022-10-11 | 华侨大学 | Rotary driving device based on electro-hydraulic compound drive |
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| CN107537671A (en) * | 2017-08-15 | 2018-01-05 | 太原理工大学 | The disintegrating machine of combination drive |
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| CN114776671A (en) * | 2022-04-19 | 2022-07-22 | 太原理工大学 | High-energy-efficiency hydraulic control system for mining shuttle car |
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Effective date of registration: 20210513 Address after: No. 368, Liuxue Road, Baqiao District, Xi'an City, Shaanxi Province, 710038 Patentee after: THE FIRST ENGINEERING CO., LTD. OF CHINA RAILWAY NO. 12 BUREAU Group Address before: 030024 No. 79 West Main Street, Wan Berlin District, Shanxi, Taiyuan, Yingze Patentee before: Taiyuan University of Technology |
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