CN106988982A - A kind of emulsion liquid-feed device - Google Patents
A kind of emulsion liquid-feed device Download PDFInfo
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- CN106988982A CN106988982A CN201710229309.1A CN201710229309A CN106988982A CN 106988982 A CN106988982 A CN 106988982A CN 201710229309 A CN201710229309 A CN 201710229309A CN 106988982 A CN106988982 A CN 106988982A
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- Prior art keywords
- emulsion
- liquid
- feed device
- pipeline
- pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/20—Filtering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The present invention discloses a kind of emulsion liquid-feed device, liquid level sensor, liquid temperature sensor and mixing component are provided with emulsion box, emulsion box, suction filter, emulsion pump, accumulator group and force piece pass sequentially through liquor charging pipeline communication, mechanical relief valve and pressure sensor are arranged on the liquor charging pipeline, mechanical relief valve is also associated with back liquid pipeline, back liquid pipeline liquid outlet is stretched into emulsion box, and back liquid pipeline is provided with buffer;Liquid filter is returned to connect with force piece and emulsion box respectively by pipeline;Muff is socketed in emulsion box periphery, and forms return flow line therewith, and hot and cold water liquid feed device is connected by pipeline with the water stream channel.Emulsion liquid-feed device proposed by the present invention, saves substantial amounts of electric power resource, and reduces the frequency that emulsion pump breaks down, and saves the cost of overhaul, the stabilization of emulsion temperature, it is ensured that the performance of emulsion pump and the stationarity of hydraulic work system.
Description
Technical field
The present invention relates to colliery field, more particularly to a kind of emulsion liquid-feed device.
Background technology
Mine-used emulsion pump station is one of key equipment of underground coal mine modernization high-yield and high-efficiency fully-mechanized mining working, to ensure
Fully-mechanized mining working safe and reliable operation to mine-used emulsion pump station, it is necessary to carry out emulsion conveying.Traditional emulsion power pack is more
Using distributing feed flow, this mode emulsion pump in the state that runs at high speed, consumes substantial amounts of electric power resource for a long time;Through unloading
Carry valve and be back to a large amount of heat energy of pressure energy conversion produced during emulsion box, make the seal member aging in emulsion pump,
The performance of emulsion pump has been had a strong impact on, and has reduced the stationarity of hydraulic work system.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of electric power resource, reduction emulsion pump saved breaks down
Frequency, the saving cost of overhaul, emulsion temperature stabilization, the performance and hydraulic work system stationarity for ensureing emulsion pump
Emulsion liquid-feed device.
A kind of emulsion liquid-feed device proposed by the present invention, including:Multigroup emulsion liquor charging component, working face return liquid group
Part, heat insulation module and controller;
Emulsion liquor charging component includes emulsion box, suction filter, emulsion pump, accumulator group, mechanical relief valve and pressure
Sensor;Liquid level sensor, liquid temperature sensor and mixing component, emulsion box, suction filter, emulsification are provided with emulsion box
Liquid pump, accumulator group and force piece pass sequentially through liquor charging pipeline communication;Mechanical relief valve and pressure sensor are respectively provided with
On the liquor charging pipeline, mechanical relief valve is also associated with back liquid pipeline, and back liquid pipeline liquid outlet is stretched into emulsion box, returns liquid
Pipeline is provided with buffer;
Working face, which returns liquid component, includes back liquid filter, described time liquid filter by pipeline respectively with force piece and breast
Change liquid case connection;
Heat insulation module includes muff and hot and cold water liquid feed device, and muff is socketed in emulsion box periphery, and is formed back therewith
Circulation road, hot and cold water liquid feed device is connected by pipeline with the water stream channel;
Controller respectively with liquid level sensor, liquid temperature sensor, mixing component, emulsion pump, mechanical relief valve, pressure sensor
With the connection of hot and cold water liquid feed device;The pressure signal for the force piece hydraulic system that controller can be gathered according to pressure sensor
Control machinery unloads valve events and emulsion pump work;Or the liquid level signal gathered according to liquid level sensor controls mixing component work
Make;Or the liquid temperature signal gathered according to liquid temperature sensor controls hot and cold water liquid feed device to work.
Preferably, two stop valves are additionally provided with the liquor charging pipeline, two stop valves are located at emulsion pump feed liquor respectively
End and outlet end, can isolate to idle standby emulsion pump 5.
Preferably, safety valve is additionally provided with the liquor charging pipeline, when liquid supply pressure value exceedes setting, emulsification can be protected
The safety of liquid pump and force piece hydraulic system.
Preferably, high pressure filter is additionally provided with the liquor charging pipeline, emulsion can be further filtered, it is ensured that breast
Change the performance and output pressure of liquid.
Preferably, accumulator group includes two high pressure accumulators, realizes the maximization of economic benefit.
Preferably, screen pack is provided with emulsion box, the grade of filtration of the screen pack is more than the filtering of suction filter
Granularity, it can carry out horizontal movement with respect to emulsion box 1, after the solid particle of filtering deposited thereon reaches certain value, can take out
Go out screen pack, to carry out the cleaning of deposit.
Preferably, controller also communicates and is connected with precaution device, too high or liquid supply pressure value exceedes in the temperature of emulsion
During setting, the precaution device can remind related personnel to carry out trouble shoot with excluding.
Preferably, controller also communicates and is connected with display, can show the work shape of emulsion pump in real time by display
State, the pressure value of force piece hydraulic system and emulsion temperature etc., improve the interactive capability of the liquid feed device.
Preferably, mixing component is located above screen pack, and it includes motor and the stirring vane with motor drive connection,
Under emulsion long-time inactive state in emulsion box, oil emulsion can be caused to be layered with clear water, this design can ensure emulsification
The performance of liquid.
Preferably, emulsion liquor charging component is provided with 5 groups, during feed flow, and at least one set of emulsion liquor charging component is standby.
A kind of emulsion liquid-feed device proposed by the present invention, pressure value can put into advance according to needed for working face hydraulic system
The emulsion pump of fixed number amount, makes the pressure value that emulsion pump is provided be coincide with desirable value, and the emulsion pump not put into is then in
Low frequency is operated, and is which obviated the energy dissipation that emulsion pump is caused in running at high speed for a long time, is saved substantial amounts of electric power resource,
And the frequency that emulsion pump breaks down is reduced, save the cost of overhaul, it is ensured that the normal operation of force piece, effectively
Improve business efficiency.In addition, the liquid feed device can realize the stabilization of emulsion temperature, it is ensured that the usability of emulsion pump
The stationarity of energy and hydraulic work system.
Brief description of the drawings
Fig. 1 is a kind of structural representation of emulsion liquid-feed device proposed by the present invention.
Embodiment
As shown in figure 1, a kind of emulsion liquid-feed device proposed by the present invention, including:Multigroup emulsion liquor charging component, work
Liquid component, heat insulation module and controller are returned in face;
Emulsion liquor charging component includes emulsion box 1, suction filter 4, emulsion pump 5, accumulator group 6, the and of mechanical relief valve 7
Liquid level sensor 2, liquid temperature sensor 3 and mixing component 16, emulsion box 1, imbibition are provided with pressure sensor 8, emulsion box 1
Filter 4, emulsion pump 5, accumulator group 6 and force piece pass sequentially through liquor charging pipeline communication;Mechanical relief valve 7 and pressure
Force snesor 8 is arranged on the liquor charging pipeline, and mechanical relief valve 7 is also associated with back liquid pipeline, and back liquid pipeline liquid outlet is stretched
Enter in emulsion box 1, back liquid pipeline is provided with buffer 9;
Working face, which returns liquid component, includes back liquid filter 10, described time liquid filter 10 by pipeline respectively with force piece with
And emulsion box 1 is connected;
Heat insulation module includes muff 11 and hot and cold water liquid feed device, and muff 11 is socketed in the periphery of emulsion box 1, and shape therewith
Into return flow line, hot and cold water liquid feed device is connected by pipeline with the water stream channel;
Controller is passed with liquid level sensor 2, liquid temperature sensor 3, mixing component, emulsion pump 5, mechanical relief valve 7, pressure respectively
Sensor 8 and the communication connection of hot and cold water liquid feed device;The force piece hydraulic system that controller can be gathered according to pressure sensor 8
Pressure signal control machinery feather valve 7 action and emulsion pump 5 work;Or the liquid level signal gathered according to liquid level sensor 2
Control mixing component work;Or the liquid temperature signal gathered according to liquid temperature sensor 3 controls hot and cold water liquid feed device to work.
With reference to this programme in feed flow, an appropriate number of emulsion pump 5 is put into according to the fluid volume of force piece, other
Emulsion pump 5 then enter low frequency operation, and make emulsion in it and suction filter 4 and emulsion box in circulate, and
The emulsion conveyed to force piece enters suction filter 4 by emulsion box 1, filters out and emulsification is inhaled into after impurity particle
Liquid pump 5, emulsion pump 5 low pressure emulsion is boosted after by mechanical relief valve 7 and accumulator group 6 to force piece hydraulic pressure system
System feed flow.
During feed flow, if the emulsion pump of input only has 1, system adjusts the frequency of emulsion pump 5 by frequency converter
Rate so that the pressure value that pressure sensor 8 is gathered is coincide with the pressure value described in force piece hydraulic system;If the breast of input
Change liquid pump 5 and be more than 1, then system adjusts a kind of rotating speed of an emulsion pump by frequency converter, and remaining emulsion pump 5 is then
Power frequency is operated so that the pressure value that pressure sensor 8 is gathered is coincide with the pressure value described in force piece hydraulic system.
When the pressure value described in force piece hydraulic system reduces, system is calculated according to the fluid volume of force piece
The current desired quantity of emulsion pump 5, and the unnecessary frequency of emulsion pump 5 is lowered, until making the pressure that pressure sensor 8 is gathered
Value is coincide with the pressure value described in force piece hydraulic system.
When the pressure value increase described in force piece hydraulic system, system is calculated according to the fluid volume of force piece
The current desired quantity of emulsion pump 5, puts into the emulsion pump 5 lacked in addition in original quantity of emulsion pump 5, and progressively
The frequency of emulsion pump 5 separately put into is raised, until making the pressure value that pressure sensor 8 is gathered and force piece hydraulic system institute
The pressure value stated is coincide.
Buffer 9 in such scheme can enter row buffering to being back to the internal emulsification liquid of emulsion box 1 by mechanical relief valve 7,
Emulsion is avoided to be impacted when flowing back to return liquid system.
The emulsion that force piece hydraulic system is returned directly can be back to emulsion box 1 by returning liquid filter 10
It is interior, to realize the recycle and reuse to emulsion.
Emulsion is when returning liquid, and the pressure energy conversion that the emulsion that emulsion pump 5 is exported returns to the generation of emulsion box 1 is a large amount of
Heat energy, makes the seal member aging in emulsion pump 5, has had a strong impact on the performance of emulsion pump 5.Simultaneously as emulsification
Liquid temperature degree height produces moment impact and noise, reduces the stationarity of hydraulic work system.To have prevented the generation of above-mentioned phenomenon,
Liquid temperature sensor 3 gathers the emulsion temperature in emulsion box 1 in real time, and the data that system is gathered according to liquid level sensor 3 are controlled
Hot and cold water liquid feed device adjusts the temperature of emulsion, so as to will not be risen too high by the emulsion temperature of emulsion pump 5.
To isolate to idle standby emulsion pump 5, two stop valves 12, two are additionally provided with the liquor charging pipeline
Individual stop valve 12 is located at the liquid feeding end of emulsion pump 5 and outlet end respectively.When liquid supply pressure value exceedes setting, for protection emulsification
Safety valve 13 is additionally provided with the safety of liquid pump 5 and force piece hydraulic system, the liquor charging pipeline.To be carried out to emulsion
Further filtering, it is ensured that be additionally provided with high pressure filter 14 on the performance and output pressure of emulsion, the liquor charging pipeline.
This programme accumulator group 6 includes two high pressure accumulators, realizes the maximization of economic benefit.
Screen pack 15 is provided with emulsion box 1, the grade of filtration of the screen pack 15 is more than the filtering grain of suction filter 4
Degree, it can carry out horizontal movement with respect to emulsion box 1, after the solid particle deposited on screen pack 15 reaches certain value, can take out
Go out screen pack 15, to carry out the cleaning of deposit.
Under emulsion long-time inactive state in emulsion box 1, oil emulsion can be caused to be layered with clear water, so as to influence
The performance of emulsion, influences the safety of force piece hydraulic system, and this programme installs mixing component in emulsification tank 1
16, mixing component 16 is located at the top of screen pack 15, and it includes motor and the stirring vane with motor drive connection.
When the temperature of emulsion is too high or liquid supply pressure value exceedes setting, the precaution device being connected with controller is automatic
Alarm, reminds related personnel to carry out trouble shoot with excluding.
To improve the interactive capability of the liquid feed device, controller is also associated with display, can be real-time by display
Show working condition, the pressure value of force piece hydraulic system and emulsion temperature of emulsion pump 5 etc..
The emulsion liquor charging component of this programme is provided with multigroup, and at least one set of standby, the standby liquor charging component is by more
Selected in turn in group, in actual design, emulsion emulsion liquor charging component is provided with 5 groups, and one of which is standby.
Under normal operating conditions, its power consumption is broadly divided into two parts to traditional emulsion pump:One is for emulsification pump
" useful part " consumed when being pressurizeed for emulsion;Two be emulsification pump invalid operation consumption " useless portion under unloaded state
Point ".This two parts power consumption is analyzed below:
One pumping station system is set for each coal-face, often 2 emulsification pumps are installed at station(The using and the reserved).If separate unit emulsification pump
Rated power be N(Kw), emulsification pump operation 7 hours per bottom class.Face timbering operation is typically actually generally 1 with the liquid time
Hour or so(It is consistent substantially with practical measurement), then the emulsification pump no-load running time is 6 hours.
For being useful power consumption for the useful power consumption that emulsion pressurizes.Useful power consumption is calculated as follows per hour:
W1=k1h1N=0.85 × 1 × N=0.85N(Kwh)
In formula:W1- per the useful power consumption of bottom class, Kwh;k1- emulsification pump descends the rate of load condensate of motor at full capacity, takes 0.85;h1- per small
The liquid time is used in class's supporting operation, is 1 hour;N-separate unit emulsification pump motor rated power, is N(Kw).
Emulsification pump after unloading, emulsification pump still full-speed operation, emulsification pump not discharge pressure emulsion, therefore be invalid fortune
OK.In the invalid operation phase, its power consumption is mainly the wasting of motor, the mechanical friction loss of emulsification pump and emulsion by suction
Pipeline, liquid sucting valve, tapping valve, feather valve and back liquid pipeline circulate the pressure loss caused.At this moment, although emulsification pump is in
A kind of light running state, but because emulsion will overcome the spring into, tapping valve to produce resistance, emulsification during circulating
Pump is still carried under certain pressure and run, therefore, and the power that it is consumed is still larger.Through practical measurement, emulsification pump unloading operation
When, its load factor reaches motor rated power more than 60%, and its every bottom class's run time, up to 6 hours, the electricity that it is consumed is remote
More than useful power consumption.Emulsification pump is lost when operation is unloaded per bottom class and is expressed as:
W2=k2h2N=0.6 × 6 × N=3.6N(Kwh)
In formula:W2- per the electricity of bottom class's emulsion unloading operation consumption, Kwh;K2Load factor under the unloading operation of-emulsification pump
For 0.6;h2- per bottom class's emulsification pump unloading run time, it is 6 hours;N-separate unit emulsification pump motor rated power, is N(Kw).
The electricity consumed when separate unit emulsifies pump operation per bottom class is expressed as:
W=W1+ W2=0.85N+3.6N=4.45N(Kwh)
In formula:W-each working face of tradition feed flow is per the electricity of bottom class's emulsification pump consumption, Kwh;W1- per the useful power consumption of bottom class,
Kwh;W2- per the electricity of bottom class's emulsion unloading operation consumption, Kwh.
If a mine has the operation simultaneously of n coal-face, the total electricity that full mine emulsification pump is consumed per bottom class is:
WAlways=n × 4.45N(Kwh)
In formula:WAlways- using total electricity of full mine during the present embodiment feed flow per bottom class's emulsion consumption, Kwh;N-full mine is same
When operation working face number;N-separate unit emulsification pump motor rated power, is N(Kw).
The present embodiment employs VFC to emulsification pump, realizes " constant pressure, on demand feed flow ", therefore completely eliminate emulsification
The invalid operation of pump.If approximate supplying face pressure emulsion by the feed flow in the present embodiment and traditional feed flow two ways
Consumed to have power consumption to regard as equal(It is consistent substantially with actual), then disappeared using the full mine of ground central fluid supply mode per bottom class
The total electricity of consumption is calculated as follows:
W, Always=n × W1=n×0.85N(Kwh)
By the way that traditional feed flow is changed to after the present embodiment feed liquid way, its power saving rate is calculated as follows:
§=(WAlways- W, Always)÷WAlways=(N × 4.45N-n × 0.85N)÷ n × 4.45N=81%
Analysis is calculated more than to draw, it is reachable relative to traditional feed liquid way power saving rate using the feed liquid way in the present embodiment
More than 80%.
A kind of emulsion liquid-feed device proposed by the present invention, pressure value can put into advance according to needed for working face hydraulic system
The emulsion pump of fixed number amount, makes the pressure value that emulsion pump is provided be coincide with desirable value, and the emulsion pump not put into is then in
Low frequency is operated, and is which obviated the energy dissipation that emulsion pump is caused in running at high speed for a long time, is saved substantial amounts of electric power resource,
And the frequency that emulsion pump breaks down is reduced, save the cost of overhaul, it is ensured that the normal operation of force piece, effectively
Improve business efficiency;The stabilization of emulsion temperature can be realized, it is ensured that the performance and hydraulic system of emulsion pump
The stationarity of work.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of emulsion liquid-feed device, it is characterised in that including:Multigroup emulsion liquor charging component, working face return liquid component, protected
Warm component and controller;
Emulsion liquor charging component includes emulsion box(1), suction filter(4), emulsion pump(5), accumulator group(6), machinery
Feather valve(7)And pressure sensor(8);Emulsion box(1)It is interior to be provided with liquid level sensor(2), liquid temperature sensor(3)With stirring group
Part(16), emulsion box(1), suction filter(4), emulsion pump(5), accumulator group(6)And force piece leads to successively
Cross liquor charging pipeline communication, mechanical relief valve(7)And pressure sensor(8)It is arranged on the liquor charging pipeline;Mechanical relief valve
(7)Back liquid pipeline is also associated with, the back liquid pipeline liquid outlet stretches into emulsion box(1)Interior, the back liquid pipeline is provided with slow
Rush device(9);
Working face, which returns liquid component, includes back liquid filter(10), return liquid filter(10)By pipeline respectively with force piece with
And emulsion box(1)Connection;
Heat insulation module includes muff(11)With hot and cold water liquid feed device;Muff(11)It is socketed in emulsion box(1)Periphery, and
Return flow line is formed therewith, and hot and cold water liquid feed device is connected by pipeline with the water stream channel;
Controller respectively with liquid level sensor(2), liquid temperature sensor(3), mixing component, emulsion pump(5), mechanical relief valve
(7), pressure sensor(8)Communicate and connect with hot and cold water liquid feed device;Controller can be according to pressure sensor(8)The work of collection
The pressure signal control machinery feather valve of face support hydraulic system(7)Action and emulsion pump(5)Work;Or according to level sensing
Device(2)The liquid level signal control mixing component work of collection;Or according to liquid temperature sensor(3)The liquid temperature signal control of collection is cold and hot
Water liquid feed device works.
2. emulsion liquid-feed device according to claim 1;Cut characterized in that, being additionally provided with two on the liquor charging pipeline
Only valve(12), two stop valves(12)It is located at emulsion pump respectively(5)Liquid feeding end and outlet end.
3. emulsion liquid-feed device according to claim 1, it is characterised in that be additionally provided with safety valve on the liquor charging pipeline
(13).
4. emulsion liquid-feed device according to claim 1, it is characterised in that be additionally provided with height on the liquor charging pipeline and press through
Filter(14).
5. emulsion liquid-feed device according to claim 1, it is characterised in that accumulator group(6)Stored including two high pressures
Can device.
6. emulsion liquid-feed device according to claim 1, it is characterised in that emulsion box(1)It is interior to be provided with screen pack
(15).
7. emulsion liquid-feed device according to claim 1, it is characterised in that the controller is also associated with precaution device.
8. emulsion liquid-feed device according to claim 1, it is characterised in that the controller is also associated with display.
9. emulsion liquid-feed device according to claim 6, it is characterised in that mixing component(16)Positioned at screen pack(15)
Top, it includes motor and the stirring vane with motor drive connection.
10. emulsion liquid-feed device according to claim 1, it is characterised in that emulsion liquor charging component is provided with 5 groups,
During feed flow, at least one set of emulsion liquor charging component is standby.
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Cited By (5)
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CN107313913A (en) * | 2017-08-08 | 2017-11-03 | 贵州盘江矿山机械有限公司 | A kind of mining energy-saving emulsion power pack and its control method |
CN109114058A (en) * | 2018-09-13 | 2019-01-01 | 北京天地玛珂电液控制***有限公司 | The discharge mechanism of hydraulic system |
CN109372733A (en) * | 2018-09-13 | 2019-02-22 | 北京天地玛珂电液控制***有限公司 | The control system of the multistage off-load of centralization based on more pumping plant parallel connection liquid-supplying systems |
CN109372734A (en) * | 2018-09-13 | 2019-02-22 | 北京天地玛珂电液控制***有限公司 | Liquid-supplying system based on more pumping plants |
CN114810177A (en) * | 2022-04-29 | 2022-07-29 | 北京天玛智控科技股份有限公司 | Pressure-stabilizing liquid supply control method and system for emulsion pump station |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN114810177A (en) * | 2022-04-29 | 2022-07-29 | 北京天玛智控科技股份有限公司 | Pressure-stabilizing liquid supply control method and system for emulsion pump station |
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