CN103557146B - The flexible start control method of pumping system, device and pumping equipment - Google Patents
The flexible start control method of pumping system, device and pumping equipment Download PDFInfo
- Publication number
- CN103557146B CN103557146B CN201310572131.2A CN201310572131A CN103557146B CN 103557146 B CN103557146 B CN 103557146B CN 201310572131 A CN201310572131 A CN 201310572131A CN 103557146 B CN103557146 B CN 103557146B
- Authority
- CN
- China
- Prior art keywords
- discharge capacity
- pressure
- pumping
- shutdown
- pump cycles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides a kind of flexible start control method of pumping system, device and pumping equipment.This flexible start control method, comprising: obtain pumping system to stop pumping last time before shutdown discharge capacity; Obtain setting discharge capacity when pumping system starts again; Obtain the dead time stopping pumping last time and between again starting; According to the magnitude relationship of shutting down between discharge capacity and setting discharge capacity, revise to obtain the first startup discharge capacity to setting discharge capacity; Revise to obtain the second startup discharge capacity according to starting discharge capacity to first dead time; Control pumping system and run the first pump cycles with the second startup discharge capacity.The present invention can make system when again starting with the second startup discharge capacity, and power when power during startup was shut down with last time as far as possible matches, thus makes startup smooth.
Description
Technical field
The present invention relates to pumping equipment field, more specifically, relate to a kind of flexible start control method of pumping system, device and pumping equipment.
Background technique
In prior art, material pumping, when the pumping system as concrete pumping, sludge pumping etc. starts pumping, the startup discharge capacity of its pumping system is the current setting discharge capacity set manually.When dead time is longer, closely knit owing to gathering materials in material conveying pipe, thus, cause starting friction resistance to increase, namely load significantly increases.Now, if still started by setting discharge capacity, due to the response lag of single power limitation control system, its start-up course momentary overload, can cause pumping failure, such as, material remaining in material conveying pipe can be caused by further compacting, thus load is increased further, vicious circle like this, finally causes normally to open pump.
Summary of the invention
The present invention aims to provide a kind of flexible start control method and device of pumping system, with solve in prior art due to shut down cause again start time pumping failure problem.
For solving the problems of the technologies described above, according to a first aspect of the invention, provide a kind of flexible start control method of pumping system, comprising: obtain pumping system to stop pumping last time before shutdown discharge capacity; Obtain setting discharge capacity when pumping system starts again; Obtain the dead time stopping pumping last time and between again starting; According to the magnitude relationship of shutting down between discharge capacity and setting discharge capacity, revise to obtain the first startup discharge capacity to setting discharge capacity; Revise to obtain the second startup discharge capacity according to starting discharge capacity to first dead time; Control pumping system and run the first pump cycles with the second startup discharge capacity.
Further, control also to comprise after pumping system runs the first pump cycles with the second startup discharge capacity: step 1, obtains actual pressure and the actual displacement of a pump cycles; Step 2, obtain pumping system to stop pumping last time before shutdown pressure; Step 3, according to the actual pressure of a upper pump cycles and the magnitude relationship of shutting down between pressure, obtains the pump displacement of current pump cycles to the actual displacement correction of a upper pump cycles; Step 4, controls pumping system and runs the second pump cycles with the pump displacement of current pump cycles.
Further, method also comprises: the step 1 in circulation execution one or many claim 2 is to step 4; Control pumping system normally to run to set discharge capacity.
Further, obtain pumping system stopped pumping last time before shutdown discharge capacity comprise: obtain the multiple system pressure in the multiple pump cycles before stopping pumping last time and multiple discharge of main pump; Using the discharge of main pump corresponding to maximum in multiple system pressure as shutdown discharge capacity.
Further, obtain pumping system stopped pumping last time before shutdown pressure comprise: obtain the multiple system pressure in the multiple pump cycles before stopping pumping last time and multiple discharge of main pump; Using one maximum in multiple system pressure as shutdown pressure.
Further; according to the magnitude relationship of shutting down between discharge capacity and setting discharge capacity; revise to obtain the first startup discharge capacity to setting discharge capacity to comprise: judge to shut down the magnitude relationship between discharge capacity and setting discharge capacity; if setting discharge capacity is greater than shutdown discharge capacity; then will shut down discharge capacity and start discharge capacity as first, otherwise discharge capacity will be set as the first startup discharge capacity.
Further, revise to obtain the second startup discharge capacity comprise according to starting discharge capacity to first dead time: according to pre-set dead time/discharge capacity function relation determines the first discharge capacity parameter, wherein, dead time/discharge capacity function relation in, first discharge capacity parameter reduces along with the increase of dead time, and the first discharge capacity parameter be less than or equal to 1 positive number; Calculate the first discharge capacity parameter and first and start the product of discharge capacity to obtain the second startup discharge capacity.
Further, according to the actual pressure of a upper pump cycles and the magnitude relationship of shutting down between pressure, the pump displacement actual displacement correction of a upper pump cycles being obtained to current pump cycles comprises: the magnitude relationship comparing actual pressure and shut down between pressure, if actual pressure is greater than shutdown pressure, then the ratio of shutting down pressure and actual pressure is set to the second discharge capacity parameter; Otherwise be 1 by the second discharge capacity optimum configurations; Calculate the product of the second discharge capacity parameter and actual displacement to obtain the pump displacement of current pump cycles.
According to a second aspect of the invention, the flexibility providing a kind of pumping system starts control gear, comprising: the first acquisition module, stopping the shutdown discharge capacity before pumping last time for obtaining pumping system; Second acquisition module, for obtaining setting discharge capacity when pumping system starts again; 3rd acquisition module, for obtaining the dead time stopping pumping last time and between again starting; First correcting module, for according to the magnitude relationship of shutting down between discharge capacity and setting discharge capacity, revises to obtain the first startup discharge capacity to setting discharge capacity; Second correcting module, for revising to obtain the second startup discharge capacity according to starting discharge capacity to first dead time; First control module, runs the first pump cycles for controlling pumping system with the second startup discharge capacity.
Further, also comprise: the 4th acquisition module, for obtaining actual pressure and the actual displacement of a upper pump cycles; 5th acquisition module, stopped the shutdown pressure before pumping for obtaining pumping system last time; 3rd correcting module, for according to the actual pressure of a upper pump cycles and the magnitude relationship of shutting down between pressure, obtains the pump displacement of current pump cycles to the actual displacement correction of a upper pump cycles; Second control module, runs the second pump cycles for controlling pumping system with the pump displacement of current pump cycles.
Further, the first acquisition module comprises: the first puocessing module, stops multiple system pressure in the multiple pump cycles before pumping and multiple discharge of main pump last time for obtaining; Second puocessing module, for using the discharge of main pump corresponding to maximum in multiple system pressure as shutdown discharge capacity.
Further, the 5th acquisition module comprises: the 3rd puocessing module, stops multiple system pressure in the multiple pump cycles before pumping and multiple discharge of main pump last time for obtaining; 4th puocessing module, for using one maximum in multiple system pressure as shutdown pressure.
Further; first correcting module comprises: the 5th puocessing module, shuts down the magnitude relationship between discharge capacity and setting discharge capacity for judging, if setting discharge capacity is greater than shutdown discharge capacity; then will shut down discharge capacity and start discharge capacity as first, otherwise discharge capacity will be set as the first startup discharge capacity.
Further, second correcting module comprises: the first discharge capacity parameter processing module, for according to pre-set dead time/discharge capacity function relation determines the first discharge capacity parameter, wherein, dead time/discharge capacity function relation in, first discharge capacity parameter reduces along with the increase of dead time, and the first discharge capacity parameter be less than or equal to 1 positive number; First computing module, starts the product of discharge capacity to obtain the second startup discharge capacity for calculating the first discharge capacity parameter and first.
Further, 3rd correcting module comprises: the second discharge capacity parameter processing module, for the magnitude relationship comparing actual pressure and shut down between pressure, if actual pressure is greater than shutdown pressure, then the ratio of shutting down pressure and actual pressure is set to the second discharge capacity parameter; Otherwise be 1 by the second discharge capacity optimum configurations; Second computing module, for calculating the product of the second discharge capacity parameter and actual displacement to obtain the pump displacement of current pump cycles.
According to a third aspect of the present invention, provide a kind of pumping equipment, comprise pumping system, also comprise above-mentioned flexibility and start control gear, it is for controlling pumping system.
The present invention obtains the first startup discharge capacity according to setting discharge capacity with the magnitude relationship of shutting down discharge capacity, then according to the length of dead time, starts discharge capacity further revise, to obtain the second startup discharge capacity first.Like this, system can be made when again starting with the second startup discharge capacity, and power when power during startup was shut down with last time as far as possible matches, thus makes startup smooth.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the flow chart of flexible start control method of the present invention;
Fig. 2 flexibility shown in the present invention starts the structural representation of control gear.
Embodiment
Below embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As a first aspect of the present invention, please refer to Fig. 1, provide a kind of flexible start control method of pumping system, particularly a kind of flexible start control method of concrete pumping system, comprising: obtain described pumping system to stop pumping last time before shutdown discharge capacity; Obtain setting discharge capacity when described pumping system starts again; Obtain stopped described last time pumping and described again start between dead time; According to the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity, revise to obtain the first startup discharge capacity to described setting discharge capacity; Revise to obtain the second startup discharge capacity according to starting discharge capacity to described first described dead time; Control described pumping system and run the first pump cycles with described second startup discharge capacity.Preferably, described first pump cycles comprises one or more pump cycles.
Wherein, the discharge capacity in the present invention, such as, shut down discharge capacity, first and start discharge capacity and the second startup discharge capacity etc., can refer to the hydraulic pressure pump delivery of pumping system; Pressure in the present invention, such as actual pressure, system pressure etc., can refer to the hydraulic pressure of pumping system.Can pressure transducer be passed through, detect and obtain force value.
Such as, in concrete pumping machinery working procedure, there is the interval waiting material to shut down.In interval overload, the inevitable compacting of concrete remaining in concrete delivery pipe, makes starting friction resistance when again starting significantly rise, thus causes the load of its hydraulic system synchronously to increase.
Due to when shutting down last time, pumping system is in continuous normal pumping conditions, and further, the power of hydraulic system is constant.Due to the power N=P*Q of hydraulic system, wherein, P is system pressure, and Q is flow system flow.
When again starting, because starting friction resistance increases, therefore, system pressure for promoting load also can increase, and like this, namely load increase can cause system pressure synchronously to rise, like this, when system power is constant, flow system flow when again starting can correspondingly reduce.So power when the present invention can shut down according to last time, and loading condition when again starting, redefine flow system flow when again starting, match with the power realized when shutting down with last time, thus ensure successfully to start.
Specifically, because shutdown can cause the resistance of start to become large, discharge capacity when system discharge capacity makes it be less than shutdown when again starting, need be reduced.Therefore, when again starting, shutdown discharge capacity when first the present invention compares the setting discharge capacity that sets manually and shut down last time compares, thus obtains the first startup discharge capacity.Further, consider that the length of dead time can affect the resistance of start, therefore, the present invention, also according to the length of dead time, starts discharge capacity to first further and revises, to obtain the second startup discharge capacity.Like this, system can be made when again starting with the second startup discharge capacity, and power when power during startup was shut down with last time as far as possible matches, thus makes startup smooth.
Preferably; according to magnitude relationship between described shutdown discharge capacity and described setting discharge capacity; revise to obtain the first startup discharge capacity to described setting discharge capacity to comprise: judge the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity; if described setting discharge capacity is greater than described shutdown discharge capacity; then described shutdown discharge capacity is started discharge capacity as described first, otherwise described setting discharge capacity is started discharge capacity as described first.Such as, in one embodiment, if shutdown discharge capacity is Q0, setting discharge capacity is Qa, and the first startup discharge capacity is QA, then: if work as Qa>Q0, QA=Q0, as Qa≤Q0, QA=Qa.Especially, set discharge capacity Qa to be inputted by outside start stop apparatus by artificial.
Preferably, revise to obtain the second startup discharge capacity comprise according to starting discharge capacity to described first described dead time: according to pre-set dead time/discharge capacity function relation determines the first discharge capacity parameter, wherein, described dead time/discharge capacity function relation in, described first discharge capacity parameter reduces along with the increase of described dead time, and described first discharge capacity parameter be less than or equal to 1 positive number; Calculate the product that described first discharge capacity parameter and described first starts discharge capacity and start discharge capacity to obtain described second.
Such as, in one embodiment, if the first startup discharge capacity is QA, dead time is t, and the first discharge capacity parameter is δ 1, and the first discharge capacity parameter and existence function relation between dead time: δ 1=f(t).Wherein, dead time, t was longer, δ 1=f(t) less.Wherein, f for described in pre-set dead time/discharge capacity function relation, such as, can determine according to practical experience.
Further, first starts discharge capacity QA and second and starts between discharge capacity Q1 and the first discharge capacity parameter δ 1 and there is following relation:
Q1=δ1*QA
Therefore, discharge capacity can be started according to above formula to first and revise, thus obtain the second startup discharge capacity.
Preferably, control also to comprise after described pumping system runs the first pump cycles with described second startup discharge capacity: step 1, obtains actual pressure and the actual displacement of a pump cycles; Step 2, obtain described pumping system to stop pumping last time before shutdown pressure; Step 3, according to the magnitude relationship between the actual pressure of a described upper pump cycles and described shutdown pressure, obtains the pump displacement of current pump cycles to the actual displacement correction of a described upper pump cycles; Step 4, controls described pumping system and runs the second pump cycles with the pump displacement of described current pump cycles.Wherein, a upper pump cycles can refer to the first pump cycles, also can refer to previous second pump cycles of multiple second pump cycles circulation time.When a upper pump cycles is the first pump cycles (particularly last first pump cycles), current pump cycles refers to the second pump cycles.Especially, the quantity of the second pump cycles can be one or more.
Preferably, described method also comprises: circulation performs the above-mentioned step 1 of one or many to step 4; Control described pumping system normally to run with described setting discharge capacity.Such as, execution twice, the step 1 above-mentioned three times or more of can circulating is to step 4.Especially, when the system power after performing through above-mentioned circulation mates with the system power before shutdown, described pumping system can be controlled and normally runs with described setting discharge capacity.
Below for circulation execution twice above-mentioned steps 1 to step 4, the above-described embodiment in the present invention is described in detail.
In first time circulation (when namely performing step 1 to step 4); shutdown pressure P 0 when obtaining actual pressure P1, the actual displacement Q1 of the first pump cycles and shut down last time; then according to the magnitude relationship between actual pressure P1 and shutdown pressure P 0; the actual pressure P1 of the first pump cycles is revised, thus obtains the pump displacement Q2 of current pump cycles.So just, working control can be carried out according to the pump displacement Q2 of current pump cycles to current pump cycles; power during continuously normal pumping before the power of that second pump cycles at this first time circulation place and last time are shut down mates, thus reaches the normal object starting pumping.
In second time circulation (when namely again performing step 1 to step 4); shutdown pressure P 0 when obtaining actual pressure P2, the actual displacement Q2 of that the second pump cycles of above-mentioned first time circulation time and shut down last time; then according to the magnitude relationship between actual pressure P2 and shutdown pressure P 0; to first time, the actual pressure P2 of that the second pump cycles of circulation time revises, thus obtains the pump displacement Q3 of current pump cycles.So just, working control can be carried out according to the pump displacement Q3 of current pump cycles (i.e. second time circulation) to current pump cycles; power during continuously normal pumping before the power of that second pump cycles at this second time circulation place and last time are shut down mates, thus reaches the normal object starting pumping.
When existence more than three or three above-mentioned circulation (namely perform step 1 to step 4) time, similar with the situation of second time circulation time, this no longer describe.
Preferably, in one embodiment, according to the magnitude relationship between the actual pressure of a upper pump cycles and described shutdown pressure, the pump displacement actual displacement correction of a described upper pump cycles being obtained to current pump cycles comprises: the magnitude relationship between more described actual pressure and described shutdown pressure, if described actual pressure is greater than described shutdown pressure, then the ratio of described shutdown pressure and described actual pressure is set to the second discharge capacity parameter; Otherwise be 1 by described second discharge capacity optimum configurations; Calculate the product of described second discharge capacity parameter and described actual displacement to obtain the pump displacement of described current pump cycles.
In this embodiment, if the actual pressure of a upper pump cycles is PL, shutdown pressure is P0, and the second discharge capacity parameter is δ 2, then
Work as PL>P0, δ 2=P0/PL;
As PL≤P0, δ 2=1
Further, there is following relation between the pump displacement QC of current pump cycles and the actual displacement QL of the second discharge capacity parameter and a upper pump cycles:
QC=δ2*QL
Like this, just according to the above-mentioned size calculating the pump displacement of current pump cycles, then according to it, pumping system can be controlled, thus the power of current pump cycles is matched with power when shutting down better.
Preferably, obtain described pumping system stopped pumping last time before shutdown discharge capacity comprise: obtain the multiple system pressure in the multiple pump cycles before stopping pumping described last time and multiple discharge of main pump; Using the discharge of main pump corresponding to maximum in described multiple system pressure as described shutdown discharge capacity.Such as, the multiple system pressure in 5-10 pump cycles before stopping pumping last time and discharge of main pump can be gathered, then, therefrom find out the maximum discharge of main pump corresponding to that system pressure of system pressure as shutdown discharge capacity.
Preferably, obtain described pumping system stopped pumping last time before shutdown pressure comprise: obtain the multiple system pressure in the multiple pump cycles before stopping pumping described last time and multiple discharge of main pump; Using one maximum in described multiple system pressure as described shutdown pressure.Such as, the multiple system pressure in 5-10 pump cycles before stopping pumping last time and discharge of main pump can be gathered, then, therefrom find out that maximum system pressure of system pressure as shutdown pressure.
As a second aspect of the present invention, please refer to Fig. 2, the flexibility providing a kind of pumping system starts the flexibility startup control gear of control gear, particularly a kind of concrete pumping system, comprising: the first acquisition module, stopping the shutdown discharge capacity before pumping last time for obtaining described pumping system; Second acquisition module, for obtaining setting discharge capacity when described pumping system starts again; 3rd acquisition module, for obtain stopped described last time pumping and described again start between dead time; First correcting module, for according to the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity, revises to obtain the first startup discharge capacity to described setting discharge capacity; Second correcting module, for revising to obtain the second startup discharge capacity according to starting discharge capacity to described first described dead time; First control module, runs the first pump cycles for controlling described pumping system with described second startup discharge capacity.
Preferably, this flexibility starts control gear and also comprises: the 4th acquisition module, for obtaining actual pressure and the actual displacement of a upper pump cycles; 5th acquisition module, stopped the shutdown pressure before pumping for obtaining described pumping system last time; 3rd correcting module, for according to the magnitude relationship between the actual pressure of a described upper pump cycles and described shutdown pressure, obtains the pump displacement of current pump cycles to the actual displacement correction of a described upper pump cycles; Second control module, runs the second pump cycles for controlling described pumping system with the pump displacement of described current pump cycles.Wherein, flexibility in the present invention starts control gear concrete utilization and realizes above-mentioned flexible start control method, its part corresponding and consistent with above-mentioned flexible start control method, below repeats no more, can with reference to the above-mentioned part about flexible start control method.
Preferably, described first acquisition module comprises: the first puocessing module, stops multiple system pressure in the multiple pump cycles before pumping and multiple discharge of main pump described last time for obtaining; Second puocessing module, for using the discharge of main pump corresponding to maximum in described multiple system pressure as described shutdown discharge capacity.
Preferably, described 5th acquisition module comprises: the 3rd puocessing module, stops multiple system pressure in the multiple pump cycles before pumping and multiple discharge of main pump described last time for obtaining; 4th puocessing module, for using one maximum in described multiple system pressure as described shutdown pressure.
Preferably; described first correcting module comprises: the 5th puocessing module; for judging the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity; if described setting discharge capacity is greater than described shutdown discharge capacity; then described shutdown discharge capacity is started discharge capacity as described first, otherwise described setting discharge capacity is started discharge capacity as described first.
Preferably, described second correcting module comprises: the first discharge capacity parameter processing module, for according to pre-set dead time/discharge capacity function relation determines the first discharge capacity parameter, wherein, described dead time/discharge capacity function relation in, described first discharge capacity parameter reduces along with the increase of described dead time, and described first discharge capacity parameter be less than or equal to 1 positive number; First computing module, the product starting discharge capacity for calculating described first discharge capacity parameter and described first starts discharge capacity to obtain described second.
Preferably, described 3rd correcting module comprises: the second discharge capacity parameter processing module, for the magnitude relationship between more described actual pressure and described shutdown pressure, if described actual pressure is greater than described shutdown pressure, then the ratio of described shutdown pressure and described actual pressure is set to the second discharge capacity parameter; Otherwise be 1 by described second discharge capacity optimum configurations; Second computing module, for calculating the product of described second discharge capacity parameter and described actual displacement to obtain the pump displacement of described current pump cycles.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general computing device, they can concentrate on single computing device, or be distributed on network that multiple computing device forms, alternatively, they can realize with the executable program-code of computing device, thus, they can be stored and be performed by computing device in the storage device, or they are made into each integrated circuit module respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
As a third aspect of the present invention, provide a kind of pumping equipment, such as, concrete pumping equipment, comprises pumping system, and also comprise above-mentioned flexibility and start control gear, it is for controlling described pumping system.
First pump cycles of the beginning of the present invention in start-up course again, stops the uninterrupted pumping operating mode before pumping according to dead time and described last time, operating mode load when anticipation starts again, thus adjust system flow in advance, with matching system power.In pump cycles several times (i.e. the second pump cycles) subsequently, the actual conditions situation before sending according to the loading condition and termination of pumping of working as a front upper pump cycles, the load of the current pump cycles of anticipation, to shift to an earlier date adjust system flow matches system power.Like this, can according to actual conditions, mesh power and load in advance, thus it is delayed to solve current single power limitation control system responses, starts the problem that momentary overload causes pumping failure, achieves laddering smooth starting.
Especially, the present invention is not only adapted to closed type hydraulic system, is also applicable to open type hydraulic system.In addition, the present invention is applicable to concrete pumping machinery, and this system is when pumping starts, and Auto-matching power and load, effectively avoid system overpressure, and the pumping avoiding bringing thus failure.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. a flexible start control method for pumping system, is characterized in that, comprising:
Obtain described pumping system to stop pumping last time before shutdown discharge capacity;
Obtain setting discharge capacity when described pumping system starts again;
Obtain stopped described last time pumping and described again start between dead time;
According to the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity, revise to obtain the first startup discharge capacity to described setting discharge capacity;
Revise to obtain the second startup discharge capacity according to starting discharge capacity to described first described dead time;
Control described pumping system and run the first pump cycles with described second startup discharge capacity.
2. flexible start control method according to claim 1, is characterized in that, controls also to comprise after described pumping system runs the first pump cycles with described second startup discharge capacity:
Step 1, obtains actual pressure and the actual displacement of a pump cycles;
Step 2, obtain described pumping system to stop pumping last time before shutdown pressure;
Step 3, according to the magnitude relationship between the actual pressure of a described upper pump cycles and described shutdown pressure, obtains the pump displacement of current pump cycles to the actual displacement correction of a described upper pump cycles;
Step 4, controls described pumping system and runs the second pump cycles with the pump displacement of described current pump cycles.
3. flexible start control method according to claim 2, is characterized in that, described method also comprises:
Step 1 in claim 2 described in circulation execution one or many is to step 4;
Control described pumping system normally to run with described setting discharge capacity.
4. flexible start control method according to claim 1, is characterized in that, obtain described pumping system stopped pumping last time before shutdown discharge capacity comprise:
Obtain the multiple system pressure in the multiple pump cycles before stopping pumping described last time and multiple discharge of main pump;
Using the discharge of main pump corresponding to maximum in described multiple system pressure as described shutdown discharge capacity.
5. flexible start control method according to claim 2, is characterized in that, obtain described pumping system stopped pumping last time before shutdown pressure comprise:
Obtain the multiple system pressure in the multiple pump cycles before stopping pumping described last time and multiple discharge of main pump;
Using one maximum in described multiple system pressure as described shutdown pressure.
6. flexible start control method according to claim 1, is characterized in that, according to the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity, revises to obtain the first startup discharge capacity comprise described setting discharge capacity:
Judge the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity, if described setting discharge capacity is greater than described shutdown discharge capacity, then described shutdown discharge capacity is started discharge capacity as described first, otherwise described setting discharge capacity is started discharge capacity as described first.
7. flexible start control method according to claim 1, is characterized in that, comprises according to revising to obtain the second startup discharge capacity to described first startup discharge capacity described dead time:
According to pre-set dead time/discharge capacity function relation determines the first discharge capacity parameter, wherein, described dead time/discharge capacity function relation in, described first discharge capacity parameter reduces along with the increase of described dead time, and described first discharge capacity parameter be less than or equal to 1 positive number;
Calculate the product that described first discharge capacity parameter and described first starts discharge capacity and start discharge capacity to obtain described second.
8. flexible start control method according to claim 2; it is characterized in that; according to the magnitude relationship between the actual pressure of a upper pump cycles and described shutdown pressure, the pump displacement actual displacement correction of a described upper pump cycles being obtained to current pump cycles comprises:
Magnitude relationship between more described actual pressure and described shutdown pressure, if described actual pressure is greater than described shutdown pressure, is then set to the second discharge capacity parameter by the ratio of described shutdown pressure and described actual pressure; Otherwise be 1 by described second discharge capacity optimum configurations;
Calculate the product of described second discharge capacity parameter and described actual displacement to obtain the pump displacement of described current pump cycles.
9. the flexibility of pumping system starts a control gear, it is characterized in that, comprising:
First acquisition module, stopped the shutdown discharge capacity before pumping for obtaining described pumping system last time;
Second acquisition module, for obtaining setting discharge capacity when described pumping system starts again;
3rd acquisition module, for obtain stopped described last time pumping and described again start between dead time;
First correcting module, for according to the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity, revises to obtain the first startup discharge capacity to described setting discharge capacity;
Second correcting module, for revising to obtain the second startup discharge capacity according to starting discharge capacity to described first described dead time;
First control module, runs the first pump cycles for controlling described pumping system with described second startup discharge capacity.
10. flexibility according to claim 9 starts control gear, it is characterized in that, also comprises:
4th acquisition module, for obtaining actual pressure and the actual displacement of a upper pump cycles;
5th acquisition module, stopped the shutdown pressure before pumping for obtaining described pumping system last time;
3rd correcting module, for according to the magnitude relationship between the actual pressure of a described upper pump cycles and described shutdown pressure, obtains the pump displacement of current pump cycles to the actual displacement correction of a described upper pump cycles;
Second control module, runs the second pump cycles for controlling described pumping system with the pump displacement of described current pump cycles.
11. flexibilities according to claim 9 start control gear, and it is characterized in that, described first acquisition module comprises:
First puocessing module, stopped multiple system pressure in the multiple pump cycles before pumping and multiple discharge of main pump described last time for obtaining;
Second puocessing module, for using the discharge of main pump corresponding to maximum in described multiple system pressure as described shutdown discharge capacity.
12. flexibilities according to claim 10 start control gear, and it is characterized in that, described 5th acquisition module comprises:
3rd puocessing module, stopped multiple system pressure in the multiple pump cycles before pumping and multiple discharge of main pump described last time for obtaining;
4th puocessing module, for using one maximum in described multiple system pressure as described shutdown pressure.
13. flexibilities according to claim 9 start control gear, and it is characterized in that, described first correcting module comprises:
5th puocessing module; for judging the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity; if described setting discharge capacity is greater than described shutdown discharge capacity, then described shutdown discharge capacity is started discharge capacity as described first, otherwise described setting discharge capacity is started discharge capacity as described first.
14. flexibilities according to claim 9 start control gear, and it is characterized in that, described second correcting module comprises:
First discharge capacity parameter processing module, for according to pre-set dead time/discharge capacity function relation determines the first discharge capacity parameter, wherein, described dead time/discharge capacity function relation in, described first discharge capacity parameter reduces along with the increase of described dead time, and described first discharge capacity parameter be less than or equal to 1 positive number;
First computing module, the product starting discharge capacity for calculating described first discharge capacity parameter and described first starts discharge capacity to obtain described second.
15. flexibilities according to claim 10 start control gear, and it is characterized in that, described 3rd correcting module comprises:
Second discharge capacity parameter processing module, for the magnitude relationship between more described actual pressure and described shutdown pressure, if described actual pressure is greater than described shutdown pressure, is then set to the second discharge capacity parameter by the ratio of described shutdown pressure and described actual pressure; Otherwise be 1 by described second discharge capacity optimum configurations;
Second computing module, for calculating the product of described second discharge capacity parameter and described actual displacement to obtain the pump displacement of described current pump cycles.
16. 1 kinds of pumping equipments, comprise pumping system, it is characterized in that, the flexibility also comprised according to any one of claim 10 to 15 starts control gear, and it is for controlling described pumping system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310572131.2A CN103557146B (en) | 2013-11-15 | 2013-11-15 | The flexible start control method of pumping system, device and pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310572131.2A CN103557146B (en) | 2013-11-15 | 2013-11-15 | The flexible start control method of pumping system, device and pumping equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103557146A CN103557146A (en) | 2014-02-05 |
| CN103557146B true CN103557146B (en) | 2016-02-10 |
Family
ID=50011475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310572131.2A Active CN103557146B (en) | 2013-11-15 | 2013-11-15 | The flexible start control method of pumping system, device and pumping equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103557146B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3936231A (en) * | 1974-05-13 | 1976-02-03 | Dresser Industries, Inc. | Oil well pumpoff control system |
| US5545012A (en) * | 1993-10-04 | 1996-08-13 | Rule Industries, Inc. | Soft-start pump control system |
| CN101725517A (en) * | 2009-12-21 | 2010-06-09 | 三一重工股份有限公司 | Pump displacement control system, pump displacement control method and concrete pump |
| CN102269157A (en) * | 2011-06-08 | 2011-12-07 | 长沙中联重工科技发展股份有限公司 | Pressure regulating method and system for concrete pumping apparatus, and concrete pumping apparatus |
| CN102434443A (en) * | 2011-12-07 | 2012-05-02 | 中联重科股份有限公司 | Control device, control method and concrete pump for viscous body pumping mechanism |
-
2013
- 2013-11-15 CN CN201310572131.2A patent/CN103557146B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3936231A (en) * | 1974-05-13 | 1976-02-03 | Dresser Industries, Inc. | Oil well pumpoff control system |
| US5545012A (en) * | 1993-10-04 | 1996-08-13 | Rule Industries, Inc. | Soft-start pump control system |
| CN101725517A (en) * | 2009-12-21 | 2010-06-09 | 三一重工股份有限公司 | Pump displacement control system, pump displacement control method and concrete pump |
| CN102269157A (en) * | 2011-06-08 | 2011-12-07 | 长沙中联重工科技发展股份有限公司 | Pressure regulating method and system for concrete pumping apparatus, and concrete pumping apparatus |
| CN102434443A (en) * | 2011-12-07 | 2012-05-02 | 中联重科股份有限公司 | Control device, control method and concrete pump for viscous body pumping mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103557146A (en) | 2014-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102400855B (en) | Power adjusting method and device in wind farm | |
| US20130004337A1 (en) | System and method for driving a pump | |
| EP3578825A3 (en) | Control device, control system, control method, program and machine learning device | |
| CN102878152B (en) | Power control method and device of hydraulic system, and the hydraulic system | |
| CN103557146B (en) | The flexible start control method of pumping system, device and pumping equipment | |
| CN107489601A (en) | A kind of concrete pumping equipment control method for engine speed | |
| CN110529373A (en) | A kind of control method, system and the device of the energy saving peak regulation that draws water | |
| CN104976170A (en) | Hydraulic pump station with energy-saving buffering protection device | |
| CN107461321B (en) | Mining multi-pump multi-frequency conversion emulsion pump station system and quantitative liquid supply control method | |
| CN114109792A (en) | Method, device and equipment for dynamically adjusting flow of air compressor and storage medium | |
| CN103452958A (en) | Pressure valve debugging system | |
| CN105133699A (en) | Water supply pump frequency-variable control method and system | |
| CN104831782B (en) | The variable frequency water supply control system supplied water based on secondary booster and working method thereof | |
| CN104831930A (en) | Pumping control method, device, system and concrete pump truck | |
| CN103669463A (en) | Acceleration control method and device of rotary hydraulic system and excavator | |
| CN106049612B (en) | A kind of multiple ontology frequency-changing pressure stabilizing variable water management system | |
| CN103557207B (en) | A kind of hydraulic system, hydraulic system pressure controlling method and engineering machinery | |
| US10393122B2 (en) | Method for shutting off a pump as well as pump station arrangement | |
| CN103303833B (en) | Multireel is raised elevator synchronisation control means and the control device of single hook formula erecting equipment | |
| JP2014034926A (en) | Operation control method and operation control device for pump | |
| CN106150998A (en) | The control method of pump installation, Long-Range Surveillance Unit and pump installation | |
| CN111271270A (en) | Special frequency conversion emergency control system for water supply equipment | |
| CN205445980U (en) | Frequency conversion team control cabinet of pump | |
| CN206144876U (en) | Combine and adopt working face emulsion pump constant voltage solution feed system | |
| KR101131394B1 (en) | Control apparatus of changing flow level in booster pump system and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |