CN103557146A - Flexible start control method and device of pumping system and pumping device - Google Patents
Flexible start control method and device of pumping system and pumping device Download PDFInfo
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- CN103557146A CN103557146A CN201310572131.2A CN201310572131A CN103557146A CN 103557146 A CN103557146 A CN 103557146A CN 201310572131 A CN201310572131 A CN 201310572131A CN 103557146 A CN103557146 A CN 103557146A
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Abstract
The invention provides a flexible start control method and device of a pumping system and a pumping device. The flexible start control method of the pumping system comprises the following steps: obtaining the halt delivery capacity of the pumping system before the last pumping is stopped; obtaining the set delivery capacity of the pumping system when the pumping is started once more; obtaining the downtime between the time of last pumping stop and the time of once-more start; according to the relationship between the halt delivery capacity and the set delivery capacity, amending the set delivery capacity to obtain a first start delivery capacity; according to the downtime, amending the first start delivery capacity to obtain a second start delivery capacity; controlling the pumping system to operate for a first pumping period by using the second start delivery capacity. With adoption of the flexible start control method and device of the pumping system, the start power is enabled to be matched with the last halt power as much as possible when the pumping system is started once more by using the second start delivery capacity, so that the start can be implemented smoothly.
Description
Technical field
The present invention relates to pumping equipment field, more specifically, the flexibility that relates to a kind of pumping system starts controlling method, device and pumping equipment.
Background technique
In prior art, material pumping, while starting pumping as the pumping system of concrete pumping, sludge pumping etc., the startup discharge capacity of its pumping system is the current setting discharge capacity setting manually.The in the situation that of longer in dead time, closely knit owing to gathering materials in material conveying pipe, thereby, cause starting friction resistance to increase, i.e. load significantly increases.Now, if still started by setting discharge capacity, response lag due to single permanent power control system, its start-up course momentary overload, can cause pumping failure, for example, can cause material remaining in material conveying pipe by further compacting, thereby load is further increased, and so vicious circle, finally causes normally opening pump.
Summary of the invention
The flexibility that the present invention aims to provide a kind of pumping system starts controlling method and device, to solve in prior art the problem that causes pumping failure while again starting due to shutdown.
For solving the problems of the technologies described above, according to a first aspect of the invention, provide a kind of flexibility of pumping system to start controlling method, comprising: obtain pumping system and stopped the shutdown discharge capacity before pumping last time; Setting discharge capacity when obtaining pumping system and again starting; Obtain stopped pumping last time and again start between dead time; According to shutting down discharge capacity and setting the magnitude relationship between discharge capacity, to setting discharge capacity, revise to obtain the first startup discharge capacity; According to dead time the first startup discharge capacity being revised to obtain the second startup discharge capacity; Control pumping system and move the first pump cycles with the second startup discharge capacity.
Further, control pumping system and also comprise after moving the first pump cycles with the second startup discharge capacity: step 1, obtain actual pressure and the actual displacement of a pump cycles; Step 2, obtains pumping system and stopped the shutdown pressure before pumping last time; Step 3, according to the magnitude relationship between the actual pressure of a upper pump cycles and shutdown pressure, obtains the pump displacement of current pump cycles to the actual displacement correction of a upper pump cycles; Step 4, control pumping system moves 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; Controlling pumping system normally moves to set discharge capacity.
Further, obtaining the shutdown discharge capacity that pumping system stopped before pumping last time comprises: obtain a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped last time before pumping; Using a corresponding discharge of main pump maximum in a plurality of system pressures as shutting down discharge capacity.
Further, obtaining the shutdown pressure that pumping system stopped before pumping last time comprises: obtain a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped last time before pumping; Using one of maximum in a plurality of system pressures as shutting down pressure.
Further; according to shutting down discharge capacity and setting the magnitude relationship between discharge capacity; setting discharge capacity is revised to obtain the first startup discharge capacity to be comprised: judgement is shut down discharge capacity and set the magnitude relationship between discharge capacity; if set discharge capacity, be greater than shutdown discharge capacity; will shut down discharge capacity as the first startup discharge capacity, otherwise will set discharge capacity as the first startup discharge capacity.
Further, according to dead time the first startup discharge capacity being revised to obtain the second startup discharge capacity, comprise: according to the dead time/discharge capacity function relation setting in advance, determine the first discharge capacity parameter, wherein, in dead time/discharge capacity function relation, the first discharge capacity parameter reduces along with the increase of dead time, and the first discharge capacity parameter is to be less than or equal to 1 positive number; Calculate the first discharge capacity parameter and the first product that starts discharge capacity to obtain the second startup discharge capacity.
Further, according to the magnitude relationship between the actual pressure of a upper pump cycles and shutdown pressure, the pump displacement that the actual displacement correction of a upper pump cycles is obtained to current pump cycles comprises: compare actual pressure and shut down the magnitude relationship between pressure, if actual pressure is greater than shutdown pressure, the ratio of shutting down pressure and actual pressure is set to the second discharge capacity parameter; Otherwise the second discharge capacity parameter is set to 1; 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, provide a kind of flexibility of pumping system to start control gear, having comprised: the first acquisition module, stopped the shutdown discharge capacity before pumping last time for obtaining pumping system; The second acquisition module, the setting discharge capacity while again starting for obtaining pumping system; The 3rd acquisition module, for obtain stopped pumping last time and again start between dead time; The first correcting module, for according to shutting down discharge capacity and setting the magnitude relationship between discharge capacity, revises to obtain the first startup discharge capacity to setting discharge capacity; The second correcting module, for according to dead time the first startup discharge capacity being revised to obtain the second startup discharge capacity; The first control module, moves 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; The 5th acquisition module, stopped the shutdown pressure before pumping last time for obtaining pumping system; The 3rd correcting module, for according to the magnitude relationship between the actual pressure of a upper pump cycles and shutdown pressure, obtains the pump displacement of current pump cycles to the actual displacement correction of a upper pump cycles; The second control module, moves 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, for obtaining a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped last time before pumping; The second puocessing module, for using the maximum corresponding discharge of main pump of a plurality of system pressures as shutting down discharge capacity.
Further, the 5th acquisition module comprises: the 3rd puocessing module, for obtaining a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped last time before pumping; The 4th puocessing module, for using maximum one of a plurality of system pressures as shutdown pressure.
Further; the first correcting module comprises: the 5th puocessing module, and for judging, shut down discharge capacity and set the magnitude relationship between discharge capacity, if set discharge capacity, be greater than shutdown discharge capacity; will shut down discharge capacity as the first startup discharge capacity, otherwise will set discharge capacity as the first startup discharge capacity.
Further, the second correcting module comprises: the first discharge capacity parameter puocessing module, for determining the first discharge capacity parameter according to the dead time/discharge capacity function relation setting in advance, wherein, in dead time/discharge capacity function relation, the first discharge capacity parameter reduces along with the increase of dead time, and the first discharge capacity parameter is to be less than or equal to 1 positive number; The first computing module, for calculating the first discharge capacity parameter and the first product that starts discharge capacity to obtain the second startup discharge capacity.
Further, the 3rd correcting module comprises: the second discharge capacity parameter puocessing module, for comparing actual pressure and shutting down the magnitude relationship between pressure, if actual pressure is greater than shutdown pressure, the ratio of shutting down pressure and actual pressure is set to the second discharge capacity parameter; Otherwise the second discharge capacity parameter is set to 1; The second computing module, for the product that calculates 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, comprised pumping system, also comprised that above-mentioned flexibility starts 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, further the first startup discharge capacity is revised, to obtain the second startup discharge capacity.Like this, can make system when again starting with the second startup discharge capacity, the power when power while making to start was shut down with last time as far as possible matches, thereby makes to start smooth.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the flexible flow chart that starts controlling method of the present invention;
Fig. 2 shows the structural representation of the flexibility startup control gear in the present invention.
Embodiment
Below embodiments of the invention are elaborated, 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, the flexibility that provides a kind of flexibility of pumping system to start controlling method, particularly a kind of concrete pumping system starts controlling method, comprising: obtain described pumping system and stopped the shutdown discharge capacity before pumping last time; Setting discharge capacity when obtaining described pumping system and again starting; Obtain and stopped pumping and described dead time between startup again described last time; According to the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity, described setting discharge capacity is revised to obtain the first startup discharge capacity; According to starting discharge capacity to described first described dead time, revise to obtain the second startup discharge capacity; Control described pumping system and move the first pump cycles with described the second startup discharge capacity.Preferably, described the first pump cycles comprises one or more pump cycles.
Wherein, the discharge capacity in the present invention, starts discharge capacity and the second startup discharge capacity etc. such as shutting down discharge capacity, first, 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 pass through pressure transducer, detect and obtain force value.
For example, in concrete pumping machinery working procedure, there is the intermittence of waiting material to shut down.In intermittently transshipping, the inevitable compacting of concrete of remnants in concrete delivery pipe, the starting friction resistance while making again to start significantly rises, thereby causes the load of its hydraulic system synchronously to increase.
Due to when shutting down last time, pumping system is in continuously normal pumping state, 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, for promoting the system pressure of load, also can increase, like this, i.e. load increase can cause system pressure synchronously to rise, like this, in the situation that system power is constant, the flow system flow while again starting can correspondingly reduce.So power when the present invention can shut down according to last time, and the loading condition while again starting, redefine the flow system flow while again starting, the power while shutting down with last time to realize matches, thereby guarantees successfully to start.
Specifically, because shutdown can cause the resistance of start, become large, while again starting, need reduce system discharge capacity and make it be less than the discharge capacity while shutting down.Therefore,, when again starting, the setting discharge capacity that the present invention first relatively sets manually and the shutdown discharge capacity while shutting down last time compare, thereby obtain 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, further revises the first startup discharge capacity, to obtain the second startup discharge capacity.Like this, can make system when again starting with the second startup discharge capacity, the power when power while making to start was shut down with last time as far as possible matches, thereby makes to start smooth.
Preferably; according to magnitude relationship between described shutdown discharge capacity and described setting discharge capacity; described setting discharge capacity is revised to obtain the first startup discharge capacity to be comprised: 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; using described shutdown discharge capacity as described first, start discharge capacity, otherwise described setting discharge capacity is started to discharge capacity as described first.For example, in one embodiment, establishing and shutting down discharge capacity is Q0, and setting discharge capacity is Qa, and the first startup discharge capacity is QA: if work as Qa>Q0, QA=Q0, as Qa≤Q0, QA=Qa.Especially, setting discharge capacity Qa can be by manually being inputted by outside start stop apparatus.
Preferably, according to described dead time described the first startup discharge capacity being revised to obtain the second startup discharge capacity, comprise: according to the dead time/discharge capacity function relation setting in advance, determine the first discharge capacity parameter, wherein, in described dead time/discharge capacity function relation, described the first discharge capacity parameter reduces along with the increase of described dead time, and described the first discharge capacity parameter is to be less than or equal to 1 positive number; The product that calculates described the first discharge capacity parameter and described the first startup discharge capacity starts discharge capacity to obtain described second.
For example, in one embodiment, establishing the first startup discharge capacity is QA, and be t dead time, 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, dead time/discharge capacity function relation that f sets in advance described in being, for example, can determine according to practical experience.
Further, between the first startup discharge capacity QA and the second startup discharge capacity Q1 and the first discharge capacity parameter δ 1, there is following relation:
Q1=δ1*QA
Therefore, can to the first startup discharge capacity, revise according to above formula, thereby obtain the second startup discharge capacity.
Preferably, control described pumping system and with described second, start discharge capacity and also comprise after moving the first pump cycles: step 1, obtain actual pressure and the actual displacement of a pump cycles; Step 2, obtains described pumping system and stopped the shutdown pressure before pumping last time; 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 moves 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 a plurality of the second pump cycles circulation times.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 for one or more.
Preferably, described method also comprises: circulation is carried out the above-mentioned step 1 of one or many to step 4; Controlling described pumping system normally moves with described setting discharge capacity.For example, can circulate execution twice, three times or more times above-mentioned step 1 to step 4.Especially, can, at the system power when after above-mentioned circulation is carried out when system power before shutdown mates, control described pumping system and normally move with described setting discharge capacity.
It is example that twice above-mentioned steps 1 to step 4 carried out in the circulation of take below, and the above-described embodiment in the present invention is elaborated.
In circulation for the first time, (perform step 1 during to step 4); shutdown pressure P 0 when obtaining actual pressure P1, the actual displacement Q1 of the first pump cycles and shutting down last time; then according to the magnitude relationship between actual pressure P1 and shutdown pressure P 0; actual pressure P1 to the first pump cycles revises, thereby obtains the pump displacement Q2 of current pump cycles.So just, can to current pump cycles, carry out working control according to the pump displacement Q2 of current pump cycles; on power during continuously normal pumping before power and the last time of that second pump cycles at this place of circulating are for the first time shut down, mate, thereby reach the object of normal startup pumping.
In circulation for the second time, (again perform step 1 during to step 4); obtain actual pressure P2, the actual displacement Q2 of that the second pump cycles of above-mentioned circulation time for the first time and the shutdown pressure P 0 while shutting down last time; then according to the magnitude relationship between actual pressure P2 and shutdown pressure P 0; the actual pressure P2 of that the second pump cycles of circulation time is for the first time revised, thereby obtain the pump displacement Q3 of current pump cycles.So just, can to current pump cycles, carry out working control according to the pump displacement Q3 of current pump cycles (i.e. circulation for the second time); on power during continuously normal pumping before power and the last time of that second pump cycles at this place of circulating are for the second time shut down, mate, thereby reach the object of normal startup pumping.
When exist more than three or three above-mentioned circulation (perform step 1 during to step 4), similar with the situation of circulation time for the second time, at this, no longer narrate.
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 that the actual displacement correction of a described upper pump cycles is 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, the ratio of described shutdown pressure and described actual pressure is set to the second discharge capacity parameter; Otherwise described the second discharge capacity parameter is set to 1; Calculate the product of described the 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,
Work as PL>P0, δ 2=P0/PL;
As PL≤P0, δ 2=1
Further, 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, there is following relation:
QC=δ2*QL
Like this, just can then according to it, pumping system be controlled according to the above-mentioned size that calculates the pump displacement of current pump cycles, thus the power that makes current pump cycles better the power when shutting down match.
Preferably, obtaining the shutdown discharge capacity that described pumping system stopped before pumping last time comprises: obtain a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped described last time before pumping; Using a corresponding discharge of main pump maximum in described a plurality of system pressures as described shutdown discharge capacity.For example, can gather a plurality of system pressures and discharge of main pump in 5-10 the pump cycles stopping last time before pumping, then, therefrom find out the corresponding discharge of main pump of that system pressure of system pressure maximum as shutting down discharge capacity.
Preferably, obtaining the shutdown pressure that described pumping system stopped before pumping last time comprises: obtain a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped described last time before pumping; Using one of maximum in described a plurality of system pressures as described shutdown pressure.For example, can gather a plurality of system pressures and discharge of main pump in 5-10 the pump cycles stopping last time before pumping, then, therefrom find out that system pressure of system pressure maximum as shutting down pressure.
As a second aspect of the present invention, please refer to Fig. 2, provide a kind of flexibility of flexibility startup control gear, particularly a kind of concrete pumping system of pumping system to start control gear, comprise: the first acquisition module, stopped the shutdown discharge capacity before pumping last time for obtaining described pumping system; The second acquisition module, the setting discharge capacity while again starting for obtaining described pumping system; The 3rd acquisition module, stopped pumping and described dead time between startup again described last time for obtaining; The 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; The second correcting module, for revising to obtain the second startup discharge capacity according to starting discharge capacity to described first described dead time; The first control module, moves the first pump cycles for controlling described pumping system with described the 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; The 5th acquisition module, stopped the shutdown pressure before pumping last time for obtaining described pumping system; The 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; The second control module, moves 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 and specifically uses and realize above-mentioned flexibility startup controlling method, itself and the above-mentioned flexible part that controlling method is corresponding and consistent that starts, below repeat no more, can be with reference to the above-mentioned part that starts controlling method about flexibility.
Preferably, described the first acquisition module comprises: the first puocessing module, for obtaining a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped described last time before pumping; The second puocessing module, for using the maximum corresponding discharge of main pump of described a plurality of system pressures as described shutdown discharge capacity.
Preferably, described the 5th acquisition module comprises: the 3rd puocessing module, for obtaining a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped described last time before pumping; The 4th puocessing module, for using maximum one of described a plurality of system pressures as described shutdown pressure.
Preferably; described the 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; using described shutdown discharge capacity as described first, start discharge capacity, otherwise described setting discharge capacity is started to discharge capacity as described first.
Preferably, described the second correcting module comprises: the first discharge capacity parameter puocessing module, for determining the first discharge capacity parameter according to the dead time/discharge capacity function relation setting in advance, wherein, in described dead time/discharge capacity function relation, described the first discharge capacity parameter reduces along with the increase of described dead time, and described the first discharge capacity parameter is to be less than or equal to 1 positive number; The first computing module, the product that starts discharge capacity for calculating described the first discharge capacity parameter and described first starts discharge capacity to obtain described second.
Preferably, described the 3rd correcting module comprises: the second discharge capacity parameter puocessing module, for the magnitude relationship between more described actual pressure and described shutdown pressure, if described actual pressure is greater than described shutdown pressure, the ratio of described shutdown pressure and described actual pressure is set to the second discharge capacity parameter; Otherwise described the second discharge capacity parameter is set to 1; The second computing module, for the product that calculates described the 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 each module of the present invention or each step can realize with general computing device, they can concentrate on single computing device, or be distributed on the network that a plurality of computing devices form, alternatively, they can be realized with the executable program-code of computing device, thereby, they can be stored in storage device and be carried out by computing device, or they are made into respectively to each integrated circuit module, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
As a third aspect of the present invention, a kind of pumping equipment is provided, for example, concrete pumping equipment, comprises pumping system, also comprises that above-mentioned flexibility starts control gear, it is for controlling described pumping system.
The first pump cycles of the beginning of the present invention in start-up course again, according to dead time and described last time stopping the uninterrupted pumping operating mode before pumping, operating mode load when anticipation starts again, thereby adjust system flow in advance, with matching system power.In pump cycles several times (i.e. the second pump cycles) subsequently, according to the loading condition when a front upper pump cycles and termination of pumping, send front actual conditions situation, the load of the current pump cycles of anticipation, to shift to an earlier date adjust system flow matches system power.Like this, can be according to actual conditions, mesh power and load in advance, thus solved current single permanent power control system response lag, start the problem that momentary overload causes pumping failure, realized 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 of 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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (16)
1. the flexibility of pumping system starts a controlling method, it is characterized in that, comprising:
Obtain described pumping system and stopped the shutdown discharge capacity before pumping last time;
Setting discharge capacity when obtaining described pumping system and again starting;
Obtain and stopped pumping and described dead time between startup again described last time;
According to the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity, described setting discharge capacity is revised to obtain the first startup discharge capacity;
According to starting discharge capacity to described first described dead time, revise to obtain the second startup discharge capacity;
Control described pumping system and move the first pump cycles with described the second startup discharge capacity.
2. the flexible controlling method that starts according to claim 1, is characterized in that, controls described pumping system and with described second, starts discharge capacity and also comprise after moving the first pump cycles:
Step 1, obtains actual pressure and the actual displacement of a pump cycles;
Step 2, obtains described pumping system and stopped the shutdown pressure before pumping last time;
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 moves the second pump cycles with the pump displacement of described current pump cycles.
3. the flexible controlling method that starts according to claim 2, is characterized in that, described method also comprises:
Step 1 described in circulation execution one or many in claim 2 is to step 4;
Controlling described pumping system normally moves with described setting discharge capacity.
4. the flexible controlling method that starts according to claim 1, is characterized in that, obtains the shutdown discharge capacity that described pumping system stopped before pumping last time and comprises:
Obtain a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped described last time before pumping;
Using a corresponding discharge of main pump maximum in described a plurality of system pressures as described shutdown discharge capacity.
5. the flexible controlling method that starts according to claim 2, is characterized in that, obtains the shutdown pressure that described pumping system stopped before pumping last time and comprises:
Obtain a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped described last time before pumping;
Using one of maximum in described a plurality of system pressures as described shutdown pressure.
6. the flexible controlling method that starts according to claim 1, is characterized in that, according to the magnitude relationship between described shutdown discharge capacity and described setting discharge capacity, described setting discharge capacity is revised to obtain the first startup discharge capacity and 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, using described shutdown discharge capacity as described the first startup discharge capacity, otherwise described setting discharge capacity is started to discharge capacity as described first.
7. the flexible controlling method that starts according to claim 1, is characterized in that, according to described dead time described the first startup discharge capacity being revised to obtain the second startup discharge capacity, comprises:
According to the dead time/discharge capacity function relation setting in advance, determine the first discharge capacity parameter, wherein, in described dead time/discharge capacity function relation, described the first discharge capacity parameter reduces along with the increase of described dead time, and described the first discharge capacity parameter is to be less than or equal to 1 positive number;
The product that calculates described the first discharge capacity parameter and described the first startup discharge capacity starts discharge capacity to obtain described second.
8. flexibility according to claim 2 starts controlling method; 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 that the actual displacement correction of a described upper pump cycles is 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, the ratio of described shutdown pressure and described actual pressure is set to the second discharge capacity parameter; Otherwise described the second discharge capacity parameter is set to 1;
Calculate the product of described the 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:
The first acquisition module, stopped the shutdown discharge capacity before pumping last time for obtaining described pumping system;
The second acquisition module, the setting discharge capacity while again starting for obtaining described pumping system;
The 3rd acquisition module, stopped pumping and described dead time between startup again described last time for obtaining;
The 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;
The second correcting module, for revising to obtain the second startup discharge capacity according to starting discharge capacity to described first described dead time;
The first control module, moves the first pump cycles for controlling described pumping system with described the second startup discharge capacity.
10. the flexible control gear that starts according to claim 9, is characterized in that, also comprises:
The 4th acquisition module, for obtaining actual pressure and the actual displacement of a upper pump cycles;
The 5th acquisition module, stopped the shutdown pressure before pumping last time for obtaining described pumping system;
The 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;
The second control module, moves the second pump cycles for controlling described pumping system with the pump displacement of described current pump cycles.
The 11. flexible control gear that start according to claim 9, is characterized in that, described the first acquisition module comprises:
The first puocessing module, for obtaining a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped described last time before pumping;
The second puocessing module, for using the maximum corresponding discharge of main pump of described a plurality of system pressures as described shutdown discharge capacity.
The 12. flexible control gear that start according to claim 10, is characterized in that, described the 5th acquisition module comprises:
The 3rd puocessing module, for obtaining a plurality of system pressures and a plurality of discharge of main pump in a plurality of pump cycles that stopped described last time before pumping;
The 4th puocessing module, for using maximum one of described a plurality of system pressures as described shutdown pressure.
The 13. flexible control gear that start according to claim 9, is characterized in that, described the 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, using described shutdown discharge capacity as described the first startup discharge capacity, otherwise described setting discharge capacity is started to discharge capacity as described first.
The 14. flexible control gear that start according to claim 9, is characterized in that, described the second correcting module comprises:
The first discharge capacity parameter puocessing module, for determining the first discharge capacity parameter according to the dead time/discharge capacity function relation setting in advance, wherein, in described dead time/discharge capacity function relation, described the first discharge capacity parameter reduces along with the increase of described dead time, and described the first discharge capacity parameter is to be less than or equal to 1 positive number;
The first computing module, the product that starts discharge capacity for calculating described the first discharge capacity parameter and described first starts discharge capacity to obtain described second.
The 15. flexible control gear that start according to claim 10, is characterized in that, described the 3rd correcting module comprises:
The second discharge capacity parameter puocessing module, for the magnitude relationship between more described actual pressure and described shutdown pressure, if described actual pressure is greater than described shutdown pressure, the ratio of described shutdown pressure and described actual pressure is set to the second discharge capacity parameter; Otherwise described the second discharge capacity parameter is set to 1;
The second computing module, for the product that calculates described the 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, also comprise that in claim 10 to 15, the flexibility described in any one 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 |
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| CN103557146A true CN103557146A (en) | 2014-02-05 |
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|---|---|---|---|---|
| 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 |
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- 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 |
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