CN115013277A - Method and device for determining pumpability of material and pumping control method and device - Google Patents

Method and device for determining pumpability of material and pumping control method and device Download PDF

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Publication number
CN115013277A
CN115013277A CN202210701325.7A CN202210701325A CN115013277A CN 115013277 A CN115013277 A CN 115013277A CN 202210701325 A CN202210701325 A CN 202210701325A CN 115013277 A CN115013277 A CN 115013277A
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China
Prior art keywords
pumping
pumpability
processing window
pressure
pump
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CN115013277B (en
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谭明
黄建兵
聂一彪
尹君
王泽龙
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Priority to CN202210701325.7A priority Critical patent/CN115013277B/en
Publication of CN115013277A publication Critical patent/CN115013277A/en
Priority to PCT/CN2022/139062 priority patent/WO2023246013A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/30—Computing systems specially adapted for manufacturing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

The invention relates to the field of engineering machinery, and discloses a method and a device for determining pumpability of a material and a pumping control method and a pumping control device, wherein the method for determining the pumpability of the material comprises the steps of collecting pumping pressure data in a pumping processing window period when the material is pumped; determining pumpability judgment parameters corresponding to pumping processing window periods according to the collected pumping pressure data; and determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and a preset pumpability judgment parameter threshold value of the pumping processing window period. Thereby, an automatic determination of the pumpability of the material is achieved.

Description

Method and device for determining pumpability of material and pumping control method and device
Technical Field
The invention relates to the field of engineering machinery, in particular to a method and a device for determining pumpability of a material and a pumping control method and a pumping control device.
Background
Concrete pumpability is understood as "the ability of concrete to pass through a pipe under the action of pumping pressure". The further or higher the concrete can be delivered under a certain pressure, the lower the probability of pipe blockage. The phenomenon of pipe blockage in the pumping process can cause great economic losses such as loss of concrete, scrapping of conveying pipelines, delay of construction period, work occupation and the like in construction enterprises. At present, most of the methods for detecting pumpability in the industry collect concrete samples, judge the concrete samples through various experiments such as slump experiments, expansion degree, slump cone retention time and the like, and judge whether smooth pumping can be realized or not through experience. In the field concrete pumping process, an operator operates the pump truck for construction at a distance, and when the concrete cannot be pumped, the engine driver can only judge that the concrete cannot be pumped at the moment through the phenomenon that a tail end hose cannot discharge the concrete or through self experience such as listening to engine sound.
Disclosure of Invention
It is an object of the present invention to provide a method and a device for determining pumpability of a material and a method and a device for controlling pumping, which solve or at least partially solve the above problems.
To achieve the above object, an aspect of an embodiment of the present invention provides a method for determining pumpability of a material, the method including: acquiring pumping pressure data in a pumping processing window period when the material is pumped, wherein the pumping processing window period comprises at least one pumping material pushing process, and a pumping device for pumping the material is currently in the pumping process; determining pumpability judgment parameters corresponding to the pumping processing window period according to the collected pumping pressure data; and determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and a preset pumpability judgment parameter threshold value of the pumping processing window period.
Optionally, the pumping processing window period includes a plurality of pumping and material pushing processes, and the pumpability judgment parameter corresponding to the pumping processing window period is a pumping pressure trend parameter, where the pumping pressure trend parameter represents a trend of a change of the pumping pressure in the pumping processing window period.
Optionally, determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and a pumpability judgment parameter threshold of a preset pumping processing window period includes: under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is less than or equal to the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is not poor; and/or under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is larger than the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is poor.
Optionally, the pumping process window comprises a plurality of pumping processes, and the method further comprises: counting the number of the pumping and pushing processes corresponding to the poor pumpability of the materials in a single pumping and pushing process within the pumping processing window period; and dividing the materials which are judged to have poor pumpability into good pumpability or general pumpability according to the counted number and a preset number threshold.
Optionally, classifying the material determined as not poor in pumpability as good in pumpability or generally comprises, according to the counted number and a preset number threshold: judging that the pumpability of the material is good under the condition that the counted number is less than or equal to the preset number threshold; and/or under the condition that the counted number is larger than the preset number threshold value, judging that the pumpability of the material is general.
Optionally, the counting, in the pumping processing window period, the number of the pumping and pushing processes corresponding to the poor pumpability of the material in the single pumping and pushing process includes: for any of the pumped material pushing processes within the pumped processing window: determining the pumpability judgment parameter corresponding to the pumping material pushing process; judging whether the pumpability of the material in the pumping and material-pushing process is poor or not according to the pumpability judgment parameter corresponding to the pumping and material-pushing process and a preset pumpability judgment parameter threshold value of the pumping and material-pushing process; and counting the number of the pumping material pushing processes of which the pumpability of the material is judged to be poor so as to obtain the number.
Optionally, the pumpability judgment parameter corresponding to the pumping and material-pushing process is a pumping pressure stability parameter, where the pumping pressure stability parameter corresponding to one pumping and material-pushing process represents a discrete degree of pumping pressure in the pumping and material-pushing process.
Optionally, the pumping pressure stability parameter is a fluctuation coefficient, and for a pumping material pushing process, the fluctuation coefficient is a ratio of a pressure standard deviation of the pumping material pushing process to a pumping pressure average value of the pumping material pushing process.
Optionally, the pumping pressure trend parameter is a slope of a straight line, and determining the slope of the straight line according to the collected pumping pressure data includes: determining an average value of the pumping pressure of each pumping material pushing process in the pumping processing window period; and determining the slope of the straight line by adopting a straight line fitting method based on the determined average value of the pumping pressure.
Optionally, the method further comprises: determining a pumpability judgment parameter corresponding to a pumping process, wherein the pumping equipment is currently in the pumping process; and determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping process and a preset pumpability judgment parameter threshold value of the pumping process.
Optionally, the pumpability judgment parameter corresponding to the pumping process is a pumping pressure judgment parameter.
Optionally, determining the pump pressure evaluation parameter comprises: determining the average value and the characteristic of a pressure curve of pumping pressure in a pumping processing window period before a pumping stop stage and the corresponding pumping stop time of the pumping stop stage, wherein the pumping stop stage is a stage before the pumping process when the pumping equipment does not pump the material; and determining the starting pump pressure evaluation parameter based on the determined average value of the pumping pressure, the pressure curve characteristic and the pump stopping time.
Optionally, determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping process and a preset pumpability judgment parameter threshold in the pumping process includes: under the condition that the pumpability judgment parameter corresponding to the pumping process is smaller than or equal to the pumpability judgment parameter threshold of the preset pumping process, judging that the pumpability of the material is not poor; and/or under the condition that the pumpability judgment parameter corresponding to the pumping process is larger than the preset pumpability judgment parameter threshold value, judging that the pumpability of the material is poor.
Optionally, the method further comprises: and classifying the material which is judged to have poor pumpability into good pumpability or normal pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump stopping stage and the threshold value of the average value of the pumping pressure in the preset pumping processing window period, wherein the pump stopping stage is a stage before the pump starting process when the pumping equipment does not pump the material.
Optionally, classifying the material determined as not having poor pumpability as good pumpability or pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump stop stage and the threshold value of the average value of the pumping pressure in the preset pumping processing window period generally includes: judging that the pumpability of the material is good under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is less than or equal to the threshold value of the average value of the pumping pressure in the preset pumping processing window period; and/or judging that the pumpability of the material is general under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is larger than the threshold value of the average value of the pumping pressure in the preset pumping processing window period.
In addition, another aspect of the embodiments of the present invention provides a pumping control method, including: determining pumpability of the material according to the method for determining pumpability of the material described above; and in the case that a pumping device pumping the material is currently in a pumping process and the pumpability of the material is determined to be poor or general, controlling the pumping device by adopting at least one of a set of pumping process improvement measures, wherein the set of pumping process improvement measures comprises: increasing a rotational speed of a main pump of the pumping apparatus, decreasing a displacement current of the main pump of the pumping apparatus, and increasing a displacement current of a constant pressure pump of the pumping apparatus; and/or in the case that the pumping equipment is currently in a pumping process and the pumpability of the material is judged to be poor or general, controlling the pumping equipment by adopting at least one of a set of pumping process improvement measures, wherein the set of pumping process improvement measures comprises: increasing a rotational speed of a main pump of the pumping apparatus and decreasing a displacement current of the main pump of the pumping apparatus.
Optionally, in a case where the pumpability of the material is determined to be poor and the pumpability of the material is not improved with the improvement measure, the pumping control method further includes: and taking early warning measures.
Accordingly, another aspect of embodiments of the present invention provides an apparatus for determining pumpability of a material, the apparatus comprising: the system comprises an acquisition module, a storage module and a processing module, wherein the acquisition module is used for acquiring pumping pressure data in a pumping processing window period when the material is pumped, the pumping processing window period comprises at least one pumping material pushing process, and pumping equipment for pumping the material is currently in the pumping process; the pumping process pumpability judgment parameter determining module is used for determining a pumpability judgment parameter corresponding to the pumping processing window period according to the collected pumping pressure data; and the pumping process pumpability determining module is used for determining the pumpability of the material according to the pumpability judging parameter corresponding to the pumping processing window period and a preset pumpability judging parameter threshold value of the pumping processing window period.
Optionally, the pumping processing window period includes a plurality of pumping material pushing processes, and the pumpability judgment parameter corresponding to the pumping processing window period is a pumping pressure trend parameter, where the pumping pressure trend parameter represents a trend of a change in pumping pressure within the pumping processing window period.
Optionally, the determining, by the pumping process pumpability determining module, the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and a preset pumpability judgment parameter threshold for the pumping processing window period includes: under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is less than or equal to the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is not poor; and/or under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is greater than the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is poor.
Optionally, the pumping process window includes a plurality of pumping processes, and the apparatus further includes: the number counting module is used for counting the number of the pumping material pushing processes corresponding to the poor pumpability of the materials in a single pumping material pushing process within the pumping processing window period; the pumping process pumpability determination module is further to: and according to the counted number and a preset number threshold value, dividing the material which is judged to have poor pumpability into a material with good pumpability or a material with general pumpability.
Optionally, the step of classifying, by the pumping process pumpability determining module, the material that is determined to have poor pumpability according to the counted number and the preset number threshold into good pumpability or pumpability generally includes: judging that the pumpability of the material is good under the condition that the counted number is less than or equal to the preset number threshold; and/or under the condition that the counted number is larger than the preset number threshold value, judging that the pumpability of the material is general.
Optionally, the counting module counts the number of the pumping material pushing processes corresponding to the poor pumpability of the material in the single pumping material pushing process within the pumping processing window period, and the counting module includes: for any of the pumped material pushing processes within the pumped processing window: determining the pumpability judgment parameter corresponding to the pumping material pushing process; judging whether the pumpability of the material in the pumping and pushing process is poor or not according to the pumpability judgment parameter corresponding to the pumping and pushing process and a preset pumping judgment parameter threshold value of the pumping and pushing process; and counting the number of the pumping material pushing processes of which the pumpability of the material is judged to be poor so as to obtain the number.
Optionally, the pumpability judgment parameter corresponding to the pumping and material-pushing process is a pumping pressure stability parameter, where the pumping pressure stability parameter corresponding to one pumping and material-pushing process represents a discrete degree of pumping pressure in the pumping and material-pushing process.
Optionally, the pumping pressure stability parameter is a fluctuation coefficient, and for a pumping material-pushing process, the fluctuation coefficient is a ratio of a standard deviation of the pressure of the pumping material-pushing process to an average value of the pumping pressure of the pumping material-pushing process.
Optionally, the pumping pressure trend parameter is a slope of a straight line, and determining the slope of the straight line according to the collected pumping pressure data includes: determining an average value of the pumping pressure of each pumping material pushing process in the pumping processing window period; and determining the slope of the straight line by adopting a straight line fitting method based on the determined average value of the pumping pressure.
Optionally, the apparatus further comprises: the device comprises a pump starting process pumpability judgment parameter determining module, a pump starting process pumpability judgment module and a control module, wherein the pump starting process pumpability judgment parameter determining module is used for determining a pumpability judgment parameter corresponding to a pump starting process, and the pumping equipment is currently in the pump starting process; and the pump starting process pumpability determining module is used for determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pump starting process and a preset pump starting process pumpability judgment parameter threshold.
Optionally, the pumpability judgment parameter corresponding to the pumping process is a pumping pressure judgment parameter.
Optionally, the determining the pumping process pumpability judgment parameter by the pumping process pumpability judgment parameter determining module includes: determining the average value and the characteristic of a pressure curve of pumping pressure in a pumping processing window period before a pumping stop stage and the corresponding pumping stop time of the pumping stop stage, wherein the pumping stop stage is a stage before the pumping process when the pumping equipment does not pump the material; and determining the pump-up pressure evaluation parameter based on the determined average value of the pumping pressure, the pressure curve characteristic and the pump stopping time.
Optionally, the determining, by the pump starting process pumpability determining module, the pumpability of the material according to the pumpability judgment parameter corresponding to the pump starting process and a preset pump starting process pumpability judgment parameter threshold includes: under the condition that the pumpability judgment parameter corresponding to the pumping process is less than or equal to the pumpability judgment parameter threshold of the preset pumping process, judging that the pumpability of the material is not poor; and/or under the condition that the pumpability judgment parameter corresponding to the pumping process is larger than the preset pumpability judgment parameter threshold value, judging that the pumpability of the material is poor.
Optionally, the pumpout process pumpability determination module is further to: and classifying the material which is judged to have poor pumpability into good pumpability or normal pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump stopping stage and the threshold value of the average value of the pumping pressure in the preset pumping processing window period, wherein the pump stopping stage is a stage before the pump starting process when the pumping equipment does not pump the material.
Optionally, the classifying, by the pump starting process pumpability determining module, the material that is determined to have poor pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump stopping stage and the threshold value of the average value of the pumping pressure in the preset pumping processing window period into good pumpability or pumpability generally includes: judging that the pumpability of the material is good under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is less than or equal to the threshold value of the average value of the pumping pressure in the preset pumping processing window period; and/or judging that the pumpability of the material is general under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is larger than the threshold value of the average value of the pumping pressure in the preset pumping processing window period.
Accordingly, another aspect of the embodiments of the present invention also provides a pumping control apparatus, including: the above-described apparatus for determining pumpability of a material; and a control module to: in the case that a pumping device pumping the material is currently in a pumping process and the pumpability of the material is determined to be poor or general, controlling the pumping device with at least one of a set of pumping process improvements, wherein the set of pumping process improvements comprises: increasing a rotational speed of a main pump of the pumping apparatus, decreasing a displacement current of the main pump of the pumping apparatus, and increasing a displacement current of a constant pressure pump of the pumping apparatus; and/or in the case that the pumping equipment is currently in a pumping process and the pumpability of the material is judged to be poor or general, controlling the pumping equipment by adopting at least one of a set of pump-starting process improving measures, wherein the set of pump-starting process improving measures comprises the following steps: increasing a rotational speed of a main pump of the pumping apparatus and decreasing a displacement current of the main pump of the pumping apparatus.
Optionally, the pumping control device further comprises: and the early warning module is used for taking early warning measures under the condition that the pumpability of the material is judged to be poor and the pumpability of the material cannot be improved by adopting improvement measures.
In addition, another aspect of the embodiment of the present invention further provides a working machine, where the working machine includes the above-mentioned device for determining pumpability of material or the above-mentioned pumping control device.
In addition, another aspect of the embodiments of the present invention also provides a machine-readable storage medium, which stores instructions for causing a machine to execute the method for determining pumpability of a material or the pumping control method described above.
According to the technical scheme, the pumpability judgment parameter corresponding to the pumping processing window period is determined by acquiring the pumping pressure data, and the pumpability of the material is determined according to the pumpability judgment parameter corresponding to the pumping processing window period and the pumpability judgment parameter threshold of the preset pumping processing window period, so that the pumpability of the material is automatically determined. In addition, compared with the method that the pumpability of the material is determined manually and by experience, the pumpability of the material is determined automatically without manual participation, the accuracy is better, and the method has stronger practicability. In addition, the pumpability of the material can be determined only by collecting pumping pressure data, the operation is simple, and the practicability is high.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a method for determining pumpability of a material provided by an embodiment of the invention;
FIG. 2 is a logic diagram of a method for determining pumpability of a material provided by another embodiment of the invention;
FIG. 3 is a logic diagram of a method for determining pumpability of a material provided by another embodiment of the invention;
FIG. 4 is a logic diagram of an automatic control strategy provided by another embodiment of the present invention;
FIG. 5 is a logic diagram of an automated control strategy provided by another embodiment of the present invention;
FIG. 6 is a logic diagram of an automated control strategy provided by another embodiment of the present invention;
fig. 7 is a block diagram of an early warning system according to another embodiment of the present invention; and
fig. 8 is a block diagram of an apparatus for determining pumpability of a material according to another embodiment of the present invention.
Description of the reference numerals
1 mixer early warning unit 2 concrete transportation equipment communication unit
3 pumping equipment detection unit 4 pumping equipment control calculation unit
5 pumping equipment communication unit 6 concrete station communication unit
7 early warning unit of concrete station 8 early warning units of pumping equipment
9 acquisition module 10 pumping process pumpability judgment parameter determination module
11 Pumping process pumpability determination Module
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
One aspect of an embodiment of the present invention provides a method for determining pumpability of a material.
Fig. 1 is a flowchart of a method for determining pumpability of a material according to an embodiment of the invention. As shown in fig. 1, the method includes the following.
In step S10, pumping pressure data in a pumping processing window period when the material is pumped is collected, where the pumping processing window period is an interval including a preset number of pumping material-pushing processes for calculation processing, the pumping processing window period includes at least one pumping material-pushing process, and a pumping device for pumping the material is currently in the pumping process. In addition, it should be noted that, in the pumping process, at least one pumping material-pushing process included in the pumping processing window period is a pumping material-pushing process before the current pumping material-pushing process, and the last pumping material-pushing process in the pumping processing window period is adjacent to the current pumping material-pushing process in the pumping process. For example, the pumping process window period includes 3 pumping pushing processes. If the current pumping material pushing process is the 6 th pumping material pushing process, the pumping material pushing process included in the pumping processing window period is the 3 rd to 5 th pumping material pushing process; the last pumping material pushing process in the pumping processing window period is the 5 th pumping material pushing process which is adjacent to the current pumping material pushing process. If the current pumping material pushing process is the 7 th pumping material pushing process, the pumping material pushing process included in the pumping processing window period is the 4 th to the 6 th pumping material pushing process; the last pumping material pushing process in the pumping processing window period is the 6 th pumping material pushing process which is adjacent to the current pumping material pushing process. Alternatively, the pumping pressure data may be employed with a pressure sensor. Furthermore, the material may be any material that can be pumped by the pumping device, for example, the material may be a viscous substance that can be pumped, alternatively the material may be concrete. It should be noted that, the material pumping and pushing process refers to a process in which a single pumping cylinder piston pushes material from a starting point to an end point when the pumping equipment works; the pumping processing window period comprises at least one pumping material pushing process, namely that the pumping oil cylinder piston completes at least one material pushing process from the starting point to the end point, and similarly, the pumping oil cylinder completes a plurality of material pushing processes when the pumping oil cylinder piston comprises a plurality of pumping material pushing processes. The starting point and the end point of the pumping material pushing process can be obtained by controlling an electric signal of an electromagnetic directional valve for controlling the action of the pumping oil cylinder. The starting point and the end point of the pumping material pushing process can be obtained through signals of a displacement sensor for detecting the displacement of a piston of the pumping oil cylinder; the in-place signal of the proximity switch can be obtained by arranging the proximity switch at the starting point and the end point of the movement of the piston.
In step S11, a pumpability determination parameter corresponding to the pumping processing window is determined according to the collected pumping pressure data. The pumpability judgment parameter corresponding to the pumping processing window period can be any parameter based on which the pumpability of the material can be judged. For example, when the pumping processing window period includes a plurality of pumping material pushing processes, the pumpability determination parameter corresponding to the pumping processing window period may be a parameter representing a variation trend of the pumping pressure within the pumping processing window period; when the pumping processing window period only includes one pumping material pushing process, the pumpability judgment parameter corresponding to the pumping processing window period may be a parameter representing a discrete degree of the pumping pressure in the pumping processing window period. Optionally, the parameter representing the variation trend of the pumping pressure may be a slope of a straight line obtained by fitting the pumping pressure data; the parameter representing the degree of dispersion of the pumping pressure may be a fluctuation coefficient, and the fluctuation coefficient corresponding to the pumping processing window period may be a ratio of a standard deviation of the pressure within the pumping processing window period to an average value of the pumping pressure within the pumping processing window period.
In step S12, the pumpability of the material is determined according to the pumpability determination parameter corresponding to the pumping processing window period and the pumpability determination parameter threshold of the preset pumping processing window period. Specifically, the pumpability judgment parameter corresponding to the pumping processing window period may be compared with a preset pumpability judgment parameter threshold, and the pumpability of the material may be determined according to a size relationship between the pumpability judgment parameter corresponding to the pumping processing window period and the preset pumpability judgment parameter threshold. In addition, the preset pumpability judgment parameter threshold value of the window period of the pumping and material pushing process can be set according to experience.
According to the technical scheme, the pumpability judgment parameter corresponding to the pumping processing window period is determined by acquiring the pumping pressure data, and the pumpability of the material is determined according to the pumpability judgment parameter corresponding to the pumping processing window period and the pumpability judgment parameter threshold of the preset pumping processing window period, so that the pumpability of the material is automatically determined. In addition, compared with the method that the pumpability of the material is determined manually and by experience, the pumpability of the material is determined automatically without manual participation, the accuracy is better, and the method has stronger practicability. In addition, the pumpability of the material can be determined only by collecting pumping pressure data, the operation is simple, and the practicability is high.
Optionally, in an embodiment of the present invention, the pumping processing window period includes a plurality of pumping material pushing processes, and the pumpability determination parameter corresponding to the pumping processing window period may be a pumping pressure trend parameter, where the pumping pressure trend parameter represents a trend of a change of the pumping pressure in the pumping processing window period. For example, the pumping pressure trend parameter may be a slope of a straight line, or may also be a parameter calculated by an exponential smoothing method, and the like, and the pumping pressure trend parameter may be any parameter capable of reflecting a trend of a pumping pressure change. Alternatively, in the case that the pumping pressure trend parameter is a slope of a straight line, all methods capable of calculating the slope of the straight line from the collected pumping pressure data may be applied to the embodiment of the present invention. Specifically, the slope of the straight line can be calculated by the following. For example, whether several pumping and material pushing processes are included in the pumping processing window period, all the collected pumping pressure data can be subjected to straight line fitting to obtain the slope of the straight line. Or, the collected pumping pressure data is distinguished by taking the pumping and material pushing process as a unit, and the distinguished pumping pressure data is subjected to straight line fitting to obtain a straight line slope. Specifically, the step of distinguishing the collected pumping pressure data by taking the pumping and material pushing processes as a unit may be to obtain an average value of the pumping pressure for the pumping pressure in one pumping and material pushing process, and perform straight line fitting on the basis of the average value of the pumping pressure in each pumping and material pushing process to obtain a straight line slope. Or the collected pumping pressure data is distinguished by taking the pumping material pushing process as a unit, namely the maximum value of the pumping pressure or the middle value of the pumping pressure in any pumping material pushing process is selected, and straight line fitting is carried out on the basis of the maximum value of the pumping pressure or the middle value of the pumping pressure in each pumping material pushing process to obtain the straight line slope.
Optionally, in this embodiment of the present invention, determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and the pumpability judgment parameter threshold of the preset pumping processing window period includes: under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is less than or equal to the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is not poor; and/or judging that the pumpability of the material is poor under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is greater than the pumpability judgment parameter threshold value of the preset pumping processing window period. Wherein pumpability of a material refers to the ability of the material to pass through a pipe of a pumping apparatus under pumping pressure. Poor pumpability refers to poor material flowability, and the discharge at the tail end of a pipeline of pumping equipment is intermittent, so that little material can flow out; the opposite is true for poor pumpability.
Optionally, in the embodiment of the present invention, a further distinction can be made in the case of poor pumpability. Specifically, the pumping process window comprises a plurality of pumping material pushing processes, and the method further comprises: counting the number of pumping and pushing processes corresponding to the determined poor pumpability of the material in a single pumping and pushing process within a pumping processing window period; and classifying the materials which are judged to have poor pumpability into good pumpability or general pumpability according to the counted number and a preset number threshold. The pumpability of the materials is judged in a single pumping material pushing process, the number of the pumping material pushing processes with the pumpability of the materials in the pumping material pushing processes judged to be poor is counted, the materials with the non-poor pumpability are further distinguished according to the counted number and a preset number threshold, and the distinction is good pumpability or general pumpability. Specifically, the counted number is compared with a preset number threshold, and the materials with poor pumpability are further distinguished according to the size relationship between the counted number and the preset number threshold. In addition, the preset number threshold is related to the number of the pumping and material pushing processes included in the pumping processing window period, and may be set according to the number of the pumping and material pushing processes included in the pumping processing window period, for example, the preset number threshold may be a value obtained by multiplying 40% or 50% by the number of the pumping and material pushing processes included in the pumping processing window period. In addition, pumpability of the material generally means that the material flows in a pipeline generally, half-pipe flow or 1/3 pipeline inner diameter flow, and the tail end of the pipeline is discharged continuously; the good pumpability of the material means that the material flows smoothly in the pipeline, the material flows in a full pipe, and the tail end of the pipeline discharges continuously.
Optionally, in the embodiment of the present invention, the classifying the materials determined to have the poor pumpability as good pumpability or generally pumpability according to the counted number and the preset number threshold may include: judging that the pumpability of the material is good under the condition that the counted number is less than or equal to the preset number threshold; and/or judging that the pumpability of the material is general under the condition that the counted number is greater than a preset number threshold value.
Optionally, in the embodiment of the present invention, counting the number of pumping and material-pushing processes corresponding to the determination of poor pumpability of the material in a single pumping and material-pushing process in the pumping processing window period may include the following. And judging whether the pumpability of the materials in the pumping and pushing process is poor or not aiming at any pumping and pushing process in the pumping processing window period. In particular, pumpability of the material can be determined within a pumped material pushing process according to the following. And determining pumpability judgment parameters corresponding to the pumping and material pushing process. The pumpability judgment parameter corresponding to the pumping and pushing process can be a parameter representing the variation trend of the pumping pressure in the pumping and pushing process, or can be a parameter representing the dispersion degree of the pumping pressure in the pumping and pushing process. The parameter reflecting the pumping pressure change trend can be the slope of a straight line obtained by fitting pumping pressure data; the parameter representing the discrete degree of the pumping pressure can be a fluctuation coefficient, and the fluctuation coefficient corresponding to the pumping and pushing process can be a ratio of a standard deviation of the pressure in the pumping and pushing process to an average value of the pumping pressure in the pumping and pushing process. And judging whether the pumpability of the material in the pumping and material pushing process is poor or not according to the pumpability judgment parameter corresponding to the pumping and material pushing process and a preset pumping judgment parameter threshold value in the pumping and material pushing process. The threshold value of the pumpability judgment parameter in the process of presetting pumping and pushing materials can be set according to experience. And counting the number of the pumping and pushing processes of which the pumpability of the material is judged to be poor so as to obtain the number.
Optionally, in the embodiment of the present invention, the pumpability judgment parameter corresponding to the pumping and material-pushing process is a pumping pressure stability parameter, where the pumping pressure stability parameter corresponding to one pumping and material-pushing process represents a discrete degree of pumping pressure in the pumping and material-pushing process. Taking the material as concrete as an example, the description is given to the reason why the pumpability of the material is determined by using the pumping pressure stability parameter. Through concrete pumping data analysis, pressure curves of pumping hydraulic systems of the concrete easy to pump and the concrete difficult to pump are found, and the inconsistency of data fluctuation degrees in a pressure stabilization period in a pumping process is specifically reflected. In the pumping and pushing stage, the more stable the pumping pressure data is, the better the concrete condition is, the pumping is easy, and the pipe blockage is not easy to occur; in the pumping and pushing stage, the larger the pumping pressure data fluctuation is, the worse the concrete condition is, the concrete is difficult to pump, and the probability of pipe blockage is higher. The stability of the data can be measured by any quantity that characterizes the degree of dispersion, such as standard deviation, variance, etc. Specifically, in a single pumping and pushing process, the dispersion degree of the pumping pressure can be represented by the fluctuation coefficient of the pumping pressure, and the larger the fluctuation coefficient is, the larger the fluctuation is, the larger the dispersion degree is; the smaller the fluctuation coefficient, the smaller the fluctuation and the smaller the degree of dispersion. Within a single pumping and material pushing process, the fluctuation coefficient C v The standard deviation SD of the pumping pressure of the single pumping material pushing process/the Mean value Mean of the pumping pressure of the single pumping material pushing process.
Optionally, in an embodiment of the present invention, the pumping pressure stability parameter is a fluctuation coefficient, and for a pumping material-pushing process, the fluctuation coefficient is a ratio of a standard deviation of the pressure of the pumping material-pushing process to an average value of the pumping pressure of the pumping material-pushing process.
Optionally, in an embodiment of the present invention, the pumping pressure trend parameter may be a slope of a straight line, and determining the slope of the straight line from the collected pumping pressure data may include the following. Determining the average value of the pumping pressure of each pumping material pushing process in the pumping processing window period; and determining the slope of the straight line by adopting a straight line fitting method based on the determined average value of the pumping pressure.For example, the slope of the line may be determined using a least squares method. Specifically, the slope of the straight line can be calculated according to the following formula.
Figure BDA0003704000010000151
Wherein b represents the slope of the straight line, n represents the number of the pumping and pushing processes in the pumping processing window period, i represents the serial number of the pumping and pushing processes in the pumping processing window period, and x i Indicating the moment at which the ith pumping-pushing process is finished, y i The average value of the pumping pressure of the ith pumping and material pushing process is shown, x is the average value of the end time of the n pumping and material pushing processes, and y is the average value of the pumping pressure of the n pumping and material pushing processes. For example, the pumping processing window period includes 10 pumping material-pushing processes, and may be one processing window formed by the first 10 pumping material-pushing processes before the current pumping material-pushing process. And calculating the average value of the pumping pressure of each pumping material-pushing process in the 10 pumping material-pushing processes, and determining the slope b of the straight line by adopting a least square method.
Fig. 2 is a logic diagram of a method for determining pumpability of a material according to another embodiment of the invention. Wherein, in this embodiment, the pumping equipment is currently in the pumping process, and the material is concrete; in the concrete pumping process, the pumpability condition of the concrete is comprehensively determined through the characteristics (fluctuation coefficient) of a pressure curve and the pressure change trend. In addition, the pumping processing window period comprises 10 pumping material pushing processes, a processing window is formed by 10 pumping material pushing processes before the current pumping material pushing process, the fluctuation coefficient of a single pumping material pushing process is calculated in real time, and the number of the pumping material pushing processes of which the pumpability of the concrete is judged to be poor in the pumping processing window period is counted.
As shown in fig. 2, in this embodiment, the method includes the following. And collecting pumping pressure data of each pumping material pushing process in the pumping processing window. And calculating the fluctuation coefficient of the pumping pressure of each pumping material pushing process in the pumping processing window. In particular, within a single pumping and pushing process, the coefficient of variation C v Standard deviation SD of pumping pressure in single pumping material-pushing process/Mean value Mean of pumping pressure in single pumping material-pushing process. And judging the pumpability of the concrete in the pumping and pushing process according to the fluctuation coefficient and the threshold value corresponding to the fluctuation coefficient aiming at any pumping and pushing process. And when the fluctuation coefficient is smaller than or equal to the threshold value corresponding to the fluctuation coefficient, the pumpability of the concrete is not poor. And counting the number w of the pumping and pushing processes of which the pumpability of the concrete is judged to be poor. And determining the slope b of the straight line corresponding to the pumping treatment window period. Judging whether the number w is larger than a preset number threshold value w 0 . When the number w is less than or equal to the preset number threshold value w 0 In the case of (2), the pumpability of the concrete is judged to be good. When the number w is larger than a preset number threshold value w 0 In the case of (1), it is determined whether or not the slope b of the straight line is larger than a threshold b corresponding to the slope of the straight line 0 . When the slope b of the straight line is larger than the threshold b corresponding to the slope of the straight line 0 In the case of (2), it is judged that the pumpability of the concrete is poor; when the slope b of the straight line is less than or equal to the threshold b corresponding to the slope of the straight line 0 In the case of (2), the pumpability of the concrete is judged to be normal.
Optionally, in an embodiment of the present invention, in a case where the pumping apparatus is currently in a pumping process, the method for determining pumpability of the material may further include the following. And determining the pumpability judgment parameter corresponding to the pumping process. The pumpability judgment parameter corresponding to the pumping process can be any parameter capable of judging the pumpability of the material in the pumping process. For example, the pumpability determination parameter corresponding to the pumping process may be a pumping pressure evaluation parameter based on which the magnitude of the pumping pressure of the pumping process can be evaluated, and whether overpressure occurs in the pumping process may be evaluated based on the pumping pressure evaluation parameter. And determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping process and the pumpability judgment parameter threshold of the preset pumping process. Under the condition that the pumpability judgment parameter corresponding to the pumping process is smaller than or equal to the pumpability judgment parameter threshold of the preset pumping process, judging that the pumpability of the material is not poor; and/or judging that the pumpability of the material is poor under the condition that the pumpability judgment parameter corresponding to the pumping process is larger than the pumpability judgment parameter threshold of the preset pumping process.
Alternatively, in an embodiment of the present invention, the pump up pressure evaluation parameter may be determined according to the following. And determining the average value and the characteristic of a pressure curve of the pumping pressure in a pumping processing window period before the pumping stop stage and the corresponding pumping stop time of the pumping stop stage, wherein the pumping stop stage is a stage in which the pumping equipment does not pump materials before the pumping process. Additionally, the pumping process window may include at least one pumped material pushing process. It should be noted that, in the pump starting process, the pumping processing window period before the pump stopping stage refers to the pumping processing window period adjacent to the pump stopping stage and before the pump stopping stage, that is, the pumping material pushing process included in the pumping processing window period is the pumping material pushing process before the pump stopping stage, and the last pumping material pushing process is adjacent to the pump stopping stage. Furthermore, the pressure curve characteristic may be a parameter related to a fluctuation coefficient or a pumping pressure standard deviation or a pumping pressure variance, or the like. Wherein, in the case that the pumping processing window period comprises a pumping material pushing process, the pressure curve characteristic is a fluctuation coefficient; in the case that the pumping processing window period comprises a plurality of pumping material-pushing processes, the pressure curve characteristic is an average value of the fluctuation coefficients corresponding to a single pumping material-pushing process. In addition, in a single pumping material pushing process, the fluctuation coefficient is the ratio of the standard deviation of the pumping pressure in the single pumping material pushing process to the average value of the pumping pressure in the single pumping material pushing process. Under the condition that the pumping processing window period comprises a plurality of pumping material pushing processes, the fluctuation coefficient corresponding to each pumping material pushing process is determined, and then the average value of all the determined fluctuation coefficients is calculated, so that the average value of the fluctuation coefficients corresponding to a single pumping material pushing process is determined. Further, the pump-off time corresponding to the pump-off phase may be determined by determining the time during which the engine speed is in the idle state. And determining a starting pump pressure judgment parameter based on the determined average value of the pumping pressure, the pressure curve characteristic and the pump stopping time. Optionally, in the embodiment of the present invention, the pump start pressure evaluation parameter may be determined according to the average pumping pressure, the pressure curve characteristic, and the mapping relationship between the pump stop time and the pump start pressure evaluation parameter, where the mapping relationship mainly can establish the average pumping pressure before pump stop, the pump start pressure evaluation parameter, and the like,And the functional relation among the pressure curve characteristic, the pump stopping time and the pump starting pressure judging parameter. For example, the mapping relationship may be h (P, C) Z ，T)＝θ 1 P+θ 2 C Z +θ 3 T and h are pump starting pressure judgment parameters, P is the average value of the pumping pressure in the pumping processing window period before the pump stopping stage, C Z Is the pressure curve characteristic in the pumping processing window period before the pump stopping stage, T is the pump stopping time corresponding to the pump stopping stage, theta 1 、θ 2 、θ 3 Respectively, the coefficients of each variable. Wherein, theta 1 ，θ 2 ，θ 3 The loss function, e.g. the mean square error function L (theta), can be calculated by means of least squares 1 ，θ 2 ，θ 3 ) (ii) a Then solving the loss function L (theta) by using an optimization algorithm (such as a gradient descent method) 1 ，θ 2 ，θ 3 ) To thereby obtain theta 1 ，θ 2 ，θ 3 . In addition, the loss function can also be different loss functions such as an average absolute error function, an average deviation error function, a cross entropy loss function, a multi-classification SVN loss function and the like; the optimization algorithm can also be a gradient descent method, a Newton method, a quasi-Newton method, a conjugate gradient method and the like. In addition, the mapping relationship may also be h (P, C) Z ，T)＝θ 1 T+θ 2 P 2 +θ 3 (C Z ) 3 . Further, the mapping relationship may be established based on a neural network model. For example, for historical data, determining an occurred pump starting overpressure area from a large amount of material pumping condition data; acquiring a data set based on the average value and the pressure curve characteristics of the pumping pressure in the pumping processing window period before the pumping stop stage, the pumping stop time corresponding to the pumping stop stage and the pumping start pressure evaluation parameter; dividing a data set into a training set and a test set; respectively training and testing the neural network model through the training set and the testing set to determine the mapping relation h (P, C) Z ，T)。
Optionally, in the embodiment of the present invention, the materials determined to have poor pumpability may be further distinguished, and the materials may be classified as good pumpability or general pumpability. In particular, the method for determining the pumpability of a material further comprises the following. And classifying the materials which are judged to have poor pumpability into good pumpability or general pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump stopping stage and the threshold value of the average value of the pumping pressure in the preset pumping processing window period, wherein the pump stopping stage is a stage before the pump starting process when the pumping equipment does not pump the materials. Alternatively, materials that are determined to be not poor pumpable may be distinguished according to the following. Under the condition that the average value of the pumping pressure in the pumping processing window period before the pumping stopping stage is less than or equal to the threshold value of the average value of the pumping pressure in the preset pumping processing window period, the pumpability of the material is judged to be good; and/or judging that the pumpability of the material is general under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is larger than the threshold value of the average value of the pumping pressure in the preset pumping processing window period.
Fig. 3 is a logic diagram of a method for determining pumpability of a material according to another embodiment of the invention. In this embodiment, the pumping device is currently in the pumping process, the material is concrete, and the pumping processing window period includes 10 pumping material-pushing processes. The pump before stopping pumping is high in concrete pump pressure or poor in concrete condition, the pump stopping time is too long, action processing such as reverse pumping and inching is not carried out, and the phenomenon of overpressure pipe blockage occurs when the pump is started next time. In the embodiment, the average pressure before the pump is stopped and the pump stopping time are obtained, and the phenomenon of overpressure of the pump is pre-judged through the mapping relation, so that the pumpability condition of the concrete is evaluated.
As shown in fig. 3, the method includes the following. And determining the average value and the characteristic of the pressure curve of the pumping pressure in the pumping processing window period before the pump stopping stage and the corresponding pump stopping time of the pump stopping stage. And judging whether the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is larger than the threshold value of the average value of the pumping pressure in the preset pumping processing window period. And if the average value of the pumping pressure is not greater than the threshold value of the average value of the pumping pressure in the preset pumping processing window period, judging that the pumpability of the concrete is good. If the average value of the pumping pressure is larger than the threshold value of the average value of the pumping pressure in the preset pumping processing window period, determining a starting pump pressure judgment parameter according to the mapping relation, and continuously judging a starting pump pressure judgment parameter h (P, C) Z T) isWhether the pressure is larger than a preset pumping pressure judgment parameter threshold value theta 0 So as to judge whether the over-pressure phenomenon occurs in the current pumping process. Wherein, h (P, C) Z ，T)>θ 0 Judged as excessive pressure, h (P, C) Z ，T)≤θ 0 It is judged that overpressure does not occur. If the overpressure phenomenon occurs, judging that the pumpability of the concrete is poor; and if the overpressure phenomenon does not occur, judging that the pumpability of the concrete is normal. Further, θ 0 To determine the threshold, the threshold may be determined by the distribution of actual test conditions.
In addition, another aspect of the embodiments of the present invention provides a pumping control method. The pumping control method comprises the following steps: determining pumpability of the material according to the method for determining pumpability of a material described in the above embodiment; and under the condition that the pumping equipment for pumping the material is in the pumping process and the pumpability of the material is judged to be poor or general, controlling the pumping equipment by adopting at least one of a pumping process improvement measure set, wherein the pumping process improvement measure set comprises the following steps: increasing a rotational speed of a main pump of the pumping apparatus, decreasing a displacement current of the main pump of the pumping apparatus, and increasing a displacement current of a constant pressure pump of the pumping apparatus; and/or in the case that the pumping equipment is in the pumping process and the pumpability of the material is judged to be poor or general, controlling the pumping equipment by adopting at least one of a set of pump-starting process improving measures, wherein the set of pump-starting process improving measures comprises the following steps: increasing the rotational speed of the main pump of the pumping apparatus and decreasing the displacement current of the main pump of the pumping apparatus. In the case of poor or general pumpability of the material, the pumpability of the material can also be improved by means of an automatic control strategy. The rotating speed of a main pump of the pumping equipment is increased, and for the pumping equipment which takes an engine as power to drive the main pump, the rotating speed of the engine can be increased, the power of a chassis engine can be increased, and sufficient power is ensured; the pumping speed can be reduced by reducing the discharge current of the main pump; the displacement current of the constant pressure pump is increased, so that the swing speed and the force of the tilt cylinder can be improved. Furthermore, in the case of poor or general pumpability of the material, the degree may be different when increasing the rotational speed of the main pump of the pumping apparatus and/or decreasing the displacement current of the main pump and/or increasing the displacement current of the constant pressure pump, in particular the degree to which poor pumpability corresponds may be greater than the degree to which pumpability generally corresponds. In addition, the main pump is used for driving the main cylinder to move back and forth and providing oil for the pumping oil cylinder; the constant pressure pump is used for driving the tilt cylinder to move back and forth and providing oil for the distribution system.
The following takes concrete as a material and a pumping device as a pump truck as an example, and an automatic control strategy is exemplarily described with reference to fig. 4 and 5. Wherein in this embodiment the pump truck is in the process of pumping. As shown in fig. 4, in the case of poor pumpability or general concrete, the control unit improves the pumpability of the concrete from the constant pressure pump displacement current, the main pump displacement current and the chassis engine speed. Specifically, the pumpability of the concrete is improved by increasing the displacement current of the constant pressure pump, decreasing the displacement current of the main pump and increasing the engine speed. As shown in fig. 5, when the pumpability of concrete is good, the engine speed, the displacement current of the main pump, and the displacement current of the constant pressure pump are not changed. Specifically, the engine speed is controlled to be the speed corresponding to the current speed gear, the displacement current of the main pump is controlled to be the displacement current corresponding to the current gear of the displacement current, and the displacement current of the constant pressure pump is controlled to be the displacement current of the factory default setting of the constant pressure pump. Under the condition that the concrete pumpability is general, adjusting the engine speed to the sum of the speed corresponding to the current speed gear and an increment delta 1, wherein delta 1 can be set according to experience, and specifically, delta 1 can be 100rpm-200 rpm; adjusting the displacement current of the main pump to be the product of the displacement current corresponding to the current gear of the displacement current and a current coefficient alpha, wherein alpha is the rotating speed corresponding to the current rotating speed gear of the engine/(the sum of the rotating speed corresponding to the current rotating speed gear and an increment delta 1); and adjusting the displacement current of the constant-pressure pump to be the sum of the displacement current of the factory default setting of the constant-pressure pump and the increment delta 2. The increment Δ 2 may be determined as the case may be. For example, the delta 2 may be determined from a change in the average value of the pumping pressure during the pumping of the material. Specifically, in the case that the pumping processing window period includes a plurality of pumping material-pushing processes, Δ 2 changes according to a change of an average value of pumping pressures of the pumping material-pushing processes, for example, an increment Δ 2 is determined according to an increment of the average value of the pumping pressure of the last pumping material-pushing process in the pumping processing window period compared with an average value of remaining pumping pressure data excluding the pumping pressure data of the last pumping material-pushing process in the pumping processing window period. For example, the pumping pressure average value of the last pumping material pushing process in the pumping processing window period is increased by 3MPa compared with the average value of the remaining pumping pressure data except the pumping pressure data in the last pumping material pushing process in the pumping processing window period, the pressure of the constant pressure pump is increased by 3MPa, and the pressure change of the constant pressure pump is linearly converted into the increment delta 2. Under the condition that the pumpability of the concrete is poor, adjusting the rotating speed of the engine to the highest rotating speed of the engine; adjusting the displacement current of the main pump to be the product of the displacement current corresponding to the current gear of the displacement current and a current coefficient alpha, wherein alpha is the rotating speed corresponding to the current rotating speed gear of the engine/the highest rotating speed of the engine; and adjusting the displacement current of the constant-pressure pump to be the sum of the displacement current of the factory default setting of the constant-pressure pump and the increment delta 2. The setting of the increment Δ 2 may be set as described above.
Taking concrete as a material and pumping equipment as a pump truck as an example, the automatic control strategy is exemplarily described with reference to fig. 6. Wherein, in this embodiment, the pump truck is in the process of starting the pump. As shown in fig. 6, in the case where the concrete pumpability is good, the control strategy is not changed, that is, the engine speed and the displacement current of the main pump are not changed. When the pumpability of the concrete is not good, whether reverse pumping or inching main cylinder operation is performed during the pumping stop period before the current pumping process is judged. The pump before stopping pumping is high in concrete pump pressure or poor in concrete condition, the pump stopping time is too long, action processing such as reverse pumping and inching is not carried out, and the phenomenon of overpressure pipe blockage occurs when the pump is started next time. That is, in the case that the pumpability of the concrete is not good, it is determined whether the overpressure phenomenon occurs in the current pumping process, or whether the pumpability of the concrete is poor, and specifically, it may be determined whether the overpressure phenomenon occurs in the current pumping process or the pumpability of the concrete is poor by referring to the method described in the above embodiment. When the reverse pump operation or the inching master cylinder operation is performed during the pump stopping period, the overpressure phenomenon does not occur in the current pump starting process, the pumpability of the concrete is judged to be general, the rotating speed of the engine is adjusted to be the sum of the rotating speed corresponding to the current rotating speed gear and an increment delta 1, wherein the delta 1 can be set according to experience, and specifically, the delta 1 can be 100rpm-200 rpm; and adjusting the displacement current of the main pump to be the product of the displacement current corresponding to the current gear of the displacement current and a current coefficient alpha, wherein alpha is the rotating speed corresponding to the current rotating speed gear of the engine/(the sum of the rotating speed corresponding to the current rotating speed gear and the increment delta 1). When the reverse pump operation or the inching main cylinder operation is not carried out during the pump stopping period, the overpressure phenomenon can occur in the current pump starting process, the pumpability of the concrete is judged to be poor, the rotating speed of the engine is adjusted to be the highest rotating speed of the pump truck, and the displacement current of the main pump is adjusted to be the displacement current corresponding to the minimum gear of the displacement current.
Optionally, in an embodiment of the present invention, in a case where the pumpability of the material is determined to be poor and the pumpability of the material cannot be improved with the improvement measure, the pumping control method further includes: and taking early warning measures. For the materials with poor pumpability, an automatic control strategy is adopted, and the pumpability of the materials is improved. If the pumpability of the material cannot be improved through an automatic control strategy, early warning measures are taken to remind material system personnel, and manual intervention is required. Specifically, the alarm reminds the aircraft driver to perform different operations, so that the pipe blockage probability is reduced; warning to remind a material placing person, wherein materials in the stirring truck are likely to be separated, material placing is stopped, and the stirring drum is accelerated to stir the materials uniformly; reminding material production personnel to improve the mixture ratio of the materials.
Fig. 7 is a block diagram of an early warning system according to another embodiment of the present invention. Wherein in this embodiment the material is concrete. As shown in fig. 7, the warning system includes a pumping device detection unit 3, a pumping device control calculation unit 4, a communication unit, and a warning unit. The communication unit comprises a pumping equipment communication unit 5, a concrete transportation equipment communication unit 2 and a concrete station communication unit 6; the early warning unit is an early warning device and comprises a pumping equipment early warning unit 8, a mixer truck early warning unit 1 and a concrete station early warning unit 7; the pumping equipment detection unit 3 can detect the equipment states such as the rotating speed of an oil pump/engine, the pumping pressure and the like; the pumping equipment control calculation unit 4 is an industrial personal computer or a control device with strong computing capability and input and output, can acquire pumping pressure data in each pumping and pushing process, and calculates characteristics (such as fluctuation coefficients in the embodiment of the invention) of a pumping pressure curve or pumping pressure trend parameters (such as linear slope) and the like in each pumping and pushing process; the communication unit is responsible for communication between the early warning unit and the pumping equipment control and calculation unit 4, and can be a GPS module and a monitoring server thereof, a wireless communication module, a wired communication module and the like. The pumping equipment early warning unit 8 can be used for reminding such as light on a remote controller, characters changed on the remote controller, vibration of the remote controller, voice sent by the remote controller and the like; the mixer truck early warning unit 1 can be used for reminding of light, voice and the like at a hopper of a pump truck or reminding of light, voice and the like at a discharging position of a mixer truck; the concrete station early warning unit 7 can schedule indoor light, voice and other prompts.
The early warning system can remind an operator to carry out different operations and take different preventive measures, and the probability of pipe blockage is reduced, so that effective early warning is carried out on pipe blockage and pipe explosion. If the pump truck equipment early warning unit 8 is used for early warning and reminding a mechanical hand, different pumping operations are carried out, and the probability of pipe blockage is reduced; if the mixer early warning unit 1 gives an early warning to remind a discharging person, materials in the mixer are likely to be separated, discharging is stopped, and the mixing drum is accelerated to mix the concrete; if the concrete station early warning unit 7 reminds concrete production personnel of early warning, the proportion of the concrete is improved.
The embodiment of the invention provides a concrete pumpability judging method and an early warning system aiming at the defects of the existing concrete pumpability detecting method and pump pipe blockage early warning system, belonging to the field of concrete working performance detection and mainly comprising the steps of judging the concrete pumpability in the pump starting process and the pump pumping process. The technical scheme provided by the embodiment of the invention mainly comprises a judging method for quantifying the pumpability index and the pumpability of concrete in the concrete pumping process. Specifically, working parameters of a concrete pumping system are obtained, and a pumpability evaluation index is calculated through the working of the pumping system; aiming at the judgment of the pumpability in the pumping process, establishing a mapping relation among the working parameters of the pumping system, the pumping stop time, the pumpability evaluation index and the pumpability of the concrete, and evaluating the pumpability condition of the concrete through the mapping relation; and aiming at the pumpability judgment of the pumping process, judging the times of poor concrete pumpability judgment in a single pumping material pushing process in a pumping processing window period and the linear slope corresponding to the pumping processing window period in real time by combining pumpability evaluation indexes, and evaluating the pumpability condition of the concrete according to the relationship between the times and the time threshold value and the relationship between the linear slope and the threshold value corresponding to the linear slope. In addition, in the embodiment of the invention, for the concrete with poor pumpability or general concrete evaluated in the pumping process and the pumping process, different automatic control strategies can be adopted to improve the pumpability of the concrete. For the concrete with poor pumpability, if the pumpability of the concrete cannot be improved through an automatic control strategy, early warning is carried out to remind concrete trunk personnel, manual intervention is required, for example, early warning is carried out to remind a mechanical hand, different operations are carried out, and the probability of pipe blockage is reduced; warning to remind a discharging person, stopping discharging and accelerating the stirring drum to stir the concrete, wherein the material in the stirring truck is likely to be separated; the early warning reminds concrete production personnel to improve the proportion of the concrete.
At present, most of the methods for detecting pumpability in the industry collect concrete samples, judge the concrete samples through various experiments such as slump experiments, expansion degree, slump cone retention time and the like, and judge whether smooth pumping can be realized or not through experience. The technical scheme provided by the embodiment of the invention aims at the defects of the existing concrete pumpability detection method, and provides a concrete pumpability judgment method and an early warning system, so that concrete samples do not need to be manually collected on site, and the detection process is strong in real-time performance; the pumping control of the anti-blocking pipe is carried out by adopting an automatic control strategy in combination with the pumpability of the concrete; the concrete pumpability is combined, the early warning system is used for carrying out proper early warning on concrete dry system people so as to remind people, the pumpability of the concrete is improved from concrete production, transportation and conveying links, the phenomenon of pipe blockage is reduced, and the pipe blockage rate in the pumping process can be effectively reduced.
Accordingly, another aspect of embodiments of the present invention provides an apparatus for determining pumpability of a material.
Fig. 8 is a device for determining pumpability of a material according to another embodiment of the invention. As shown in fig. 8, the apparatus includes an acquisition module 9, a pumping process pumpability judgment parameter determination module 10, and a pumping process pumpability determination module 11. The acquisition module 9 is used for acquiring pumping pressure data in a pumping processing window period when the material is pumped, wherein the pumping processing window period comprises at least one pumping material pushing process, and pumping equipment for pumping the material is currently in the pumping process; the pumping process pumpability judgment parameter determining module 10 is used for determining a pumpability judgment parameter corresponding to a pumping processing window period according to the collected pumping pressure data; the pumping process pumpability determining module 11 is configured to determine pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and a preset pumpability judgment parameter threshold of the pumping processing window period.
Optionally, in an embodiment of the present invention, the pumping processing window period includes a plurality of pumping material pushing processes, and the pumpability determination parameter corresponding to the pumping processing window period is a pumping pressure trend parameter, where the pumping pressure trend parameter represents a trend of a change in pumping pressure within the pumping processing window period.
Optionally, in this embodiment of the present invention, the determining, by the pumping process pumpability determining module, pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and the pumpability judgment parameter threshold of the preset pumping processing window period includes: under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is less than or equal to the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is not poor; and/or judging that the pumpability of the material is poor under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is greater than the pumpability judgment parameter threshold value of the preset pumping processing window period.
Optionally, in an embodiment of the present invention, the pumping processing window includes a plurality of pumping material-pushing processes, and the apparatus further includes: the number counting module is used for counting the number of pumping and pushing processes corresponding to the judgment of poor pumpability of the material in a single pumping and pushing process within a pumping processing window period; the pumping process pumpability determination module is further to: and according to the counted number and a preset number threshold value, classifying the materials which are judged to have poor pumpability into good pumpability or general pumpability.
Optionally, in the embodiment of the present invention, the classifying, by the pumping process pumpability determining module, the material that is determined to have the poor pumpability as the material with the good pumpability or the material with the poor pumpability according to the counted number and the preset number threshold generally includes: judging that the pumpability of the material is good under the condition that the counted number is less than or equal to the preset number threshold; and/or judging that the pumpability of the material is general under the condition that the counted number is greater than a preset number threshold value.
Optionally, in the embodiment of the present invention, the counting module counts, in a pumping processing window period, the number of pumping and material-pushing processes corresponding to the determination of the poor pumpability of the material in a single pumping and material-pushing process, where the number of pumping and material-pushing processes corresponds to the determination of the poor pumpability of the material includes: for any pumped material pushing process within the pumped processing window period: determining pumpability judgment parameters corresponding to the pumping and material pushing process; judging whether the pumpability of the material in the pumping and pushing process is poor or not according to the pumpability judgment parameter corresponding to the pumping and pushing process and a preset pumping judgment parameter threshold value in the pumping and pushing process; and counting the number of the pumping and pushing processes of which the pumpability of the material is judged to be poor so as to obtain the number.
Optionally, in the embodiment of the present invention, the pumpability judgment parameter corresponding to the pumping and material-pushing process is a pumping pressure stability parameter, where the pumping pressure stability parameter corresponding to one pumping and material-pushing process represents a discrete degree of pumping pressure in the pumping and material-pushing process.
Optionally, in an embodiment of the present invention, the pumping pressure stability parameter is a fluctuation coefficient, and for a pumping material pushing process, the fluctuation coefficient is a ratio of a standard deviation of the pressure of the pumping material pushing process to an average value of the pumping pressure of the pumping material pushing process.
Optionally, in an embodiment of the present invention, the pumping pressure trend parameter is a slope of a straight line, and determining the slope of the straight line according to the collected pumping pressure data includes: determining the average value of the pumping pressure of each pumping material pushing process in the pumping processing window period; and determining the slope of the straight line by adopting a straight line fitting method based on the determined average value of the pumping pressure.
Optionally, in an embodiment of the present invention, the apparatus further includes: the device comprises a pump starting process pumpability judgment parameter determining module, a pump starting process pumpability judgment module and a control module, wherein the pump starting process pumpability judgment parameter determining module is used for determining a pumpability judgment parameter corresponding to a pump starting process, and pumping equipment is currently in the pump starting process; and the pump starting process pumpability determining module is used for determining the pumpability of the material according to the corresponding pumpability judgment parameter of the pump starting process and the preset pumpability judgment parameter threshold of the pump starting process.
Optionally, in the embodiment of the present invention, the pumpability judgment parameter corresponding to the pumping process is a pumping pressure judgment parameter.
Optionally, in this embodiment of the present invention, the determining the pumping pressure judgment parameter by the pumping process pumpability judgment parameter determining module includes: determining the average value and the characteristic of a pressure curve of pumping pressure in a pumping processing window period before a pumping stop stage and the corresponding pumping stop time of the pumping stop stage, wherein the pumping stop stage is a stage before the pumping process when pumping equipment does not pump materials; and determining a pump-up pressure evaluation parameter based on the determined average value of the pumping pressure, the pressure curve characteristic and the pump-down time.
Optionally, in this embodiment of the present invention, the determining, by the pump starting process pumpability determining module, pumpability of the material according to the pumpability judgment parameter corresponding to the pump starting process and the preset pump starting process pumpability judgment parameter threshold includes: under the condition that the pumpability judgment parameter corresponding to the pumping process is smaller than or equal to the pumpability judgment parameter threshold of the preset pumping process, judging that the pumpability of the material is not poor; and/or judging that the pumpability of the material is poor under the condition that the pumpability judgment parameter corresponding to the pumping process is larger than the pumpability judgment parameter threshold of the preset pumping process.
Optionally, in an embodiment of the present invention, the pumping process pumpability determining module is further configured to: and classifying the materials which are judged to have poor pumpability into good pumpability or general pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump stopping stage and the threshold value of the average value of the pumping pressure in the preset pumping processing window period, wherein the pump stopping stage is a stage before the pump starting process when the pumping equipment does not pump the materials.
Optionally, in this embodiment of the present invention, the classifying, by the pump starting process pumpability determining module, the material that is determined to have poor pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump stopping stage and the threshold of the average value of the pumping pressure in the preset pumping processing window period as good pumpability or pumpability generally includes: judging that the pumpability of the material is good under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is less than or equal to the threshold value of the average value of the pumping pressure in the preset pumping processing window period; and/or judging that the pumpability of the material is general under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is larger than the threshold value of the average value of the pumping pressure in the preset pumping processing window period.
The specific working principle and the benefits of the device for determining pumpability of a material provided by the embodiment of the invention are similar to those of the method for determining pumpability of a material provided by the embodiment of the invention, and will not be described again here.
In addition, another aspect of the embodiments of the present invention also provides a pumping control apparatus, including: the apparatus for determining pumpability of a material as described in the above embodiments; and a control module to: in the case that a pumping device pumping a material is currently in a pumping process and the pumpability of the material is determined to be poor or general, controlling the pumping device by using at least one of a set of pumping process improvement measures, wherein the set of pumping process improvement measures comprises: increasing a rotational speed of a main pump of the pumping apparatus, decreasing a displacement current of the main pump of the pumping apparatus, and increasing a displacement current of a constant pressure pump of the pumping apparatus; and/or in the case that the pumping equipment is currently in the pumping process and the pumpability of the material is judged to be poor or general, controlling the pumping equipment by adopting at least one of a set of pump-starting process improving measures, wherein the set of pump-starting process improving measures comprises the following steps: increasing the rotational speed of the main pump of the pumping apparatus and decreasing the displacement current of the main pump of the pumping apparatus.
Optionally, in an embodiment of the present invention, the pumping control device further includes: and the early warning module is used for taking early warning measures under the condition that the pumpability of the material is judged to be poor and the pumpability of the material cannot be improved by adopting improvement measures.
The specific working principle and the benefits of the pumping control device provided by the embodiment of the invention are similar to those of the pumping control method provided by the embodiment of the invention, and the detailed description is omitted here.
In addition, another aspect of the embodiments of the present invention provides a working machine, where the working machine includes the device for determining pumpability of material described in the above embodiments or the pumping control device described in the above embodiments.
In addition, another aspect of the embodiments of the present invention also provides a machine-readable storage medium, which stores instructions for causing a machine to execute the method for determining pumpability of a material described in the above embodiments or the pumping control method described in the above embodiments.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (36)

1. A method for determining pumpability of a material, the method comprising:
acquiring pumping pressure data in a pumping processing window period when the material is pumped, wherein the pumping processing window period comprises at least one pumping material pushing process, and a pumping device for pumping the material is currently in the pumping process;
determining pumpability judgment parameters corresponding to the pumping processing window period according to the collected pumping pressure data; and
and determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and a preset pumpability judgment parameter threshold value of the pumping processing window period.
2. The method according to claim 1, wherein the pumping processing window period includes a plurality of pumping material pushing processes, and the pumpability determination parameter corresponding to the pumping processing window period is a pumping pressure trend parameter, wherein the pumping pressure trend parameter represents a trend of a pumping pressure change within the pumping processing window period.
3. The method of claim 1, wherein determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and a preset pumpability judgment parameter threshold for the pumping processing window period comprises:
under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is less than or equal to the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is not poor; and/or
And under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is greater than the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is poor.
4. The method of claim 3, wherein the pumping process window comprises a plurality of the pumping material pushing processes, the method further comprising:
counting the number of the pumping and pushing processes corresponding to the poor pumpability of the material in a single pumping and pushing process within the pumping processing window period; and
and according to the counted number and a preset number threshold value, dividing the materials which are judged to have poor pumpability into the materials with good pumpability or the materials with general pumpability.
5. The method of claim 4, wherein the classifying the materials determined as having poor pumpability as good pumpability or generally pumpability according to the counted number and a preset number threshold comprises:
judging that the pumpability of the material is good under the condition that the counted number is less than or equal to the preset number threshold; and/or
And under the condition that the counted number is greater than the preset number threshold value, judging that the pumpability of the material is general.
6. The method according to claim 4, wherein the counting the number of the pumping material pushing processes corresponding to the determined poor pumpability of the material in the single pumping material pushing process within the pumping processing window period comprises:
for any of the pumped material pushing processes within the pumped processing window:
determining the pumpability judgment parameter corresponding to the pumping material pushing process; and
judging whether the pumpability of the material in the pumping and pushing process is poor or not according to the pumpability judgment parameter corresponding to the pumping and pushing process and a preset pumping judgment parameter threshold value of the pumping and pushing process; and
and counting the number of the pumping material pushing processes of which the pumpability of the material is judged to be poor so as to obtain the number.
7. The method according to claim 6, wherein the pumpability judgment parameter corresponding to the pumping material pushing process is a pumping pressure stability parameter, wherein the pumping pressure stability parameter corresponding to one pumping material pushing process represents a discrete degree of pumping pressure in the pumping material pushing process.
8. The method of claim 7,
the pumping pressure stability parameter is a coefficient of variation,
for one pumping material pushing process, the fluctuation coefficient is the ratio of the standard deviation of the pressure in the pumping material pushing process to the average value of the pumping pressure in the pumping material pushing process.
9. The method of claim 2, wherein the pumping pressure trend parameter is a slope of a line, and determining the slope of the line from the collected pumping pressure data comprises:
determining an average pumping pressure value of each pumping material pushing process in the pumping processing window period; and
determining the slope of the line using a line fitting method based on the determined average value of the pumping pressure.
10. The method according to any one of claims 1-9, further comprising:
determining a pumpability judgment parameter corresponding to a pumping process, wherein the pumping equipment is currently in the pumping process; and
and determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping process and a preset pumpability judgment parameter threshold value of the pumping process.
11. The method of claim 10, wherein the pumpability judgment parameter corresponding to the pumping process is a pumping pressure judgment parameter.
12. The method of claim 11, wherein determining the pump pressure evaluation parameter comprises:
determining the average value and the characteristic of a pressure curve of pumping pressure in a pumping processing window period before a pumping stop stage and the corresponding pumping stop time of the pumping stop stage, wherein the pumping stop stage is a stage before the pumping process when the pumping equipment does not pump the material; and
determining the pump-up pressure evaluation parameter based on the determined average pumping pressure, the pressure curve characteristic, and the pump-down time.
13. The method of claim 10, wherein determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping process and a preset pummability judgment parameter threshold value of the pumping process comprises:
under the condition that the pumpability judgment parameter corresponding to the pumping process is less than or equal to the pumpability judgment parameter threshold of the preset pumping process, judging that the pumpability of the material is not poor; and/or
And under the condition that the pumpability judgment parameter corresponding to the pumping process is larger than the preset pumpability judgment parameter threshold value, judging that the pumpability of the material is poor.
14. The method of claim 13, further comprising:
and dividing the material which is judged to have poor pumpability into good pumpability or general pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump stopping period and the threshold value of the average value of the pumping pressure in the preset pumping processing window period, wherein the pump stopping period is a period before the pump starting process when the pumping equipment does not pump the material.
15. The method of claim 14, wherein classifying the material determined to have poor pumpability as good pumpability or generally pumpability based on the average value of the pumping pressure within the pumping processing window period before the pump-down period and the threshold value of the average value of the pumping pressure within the preset pumping processing window period comprises:
judging that the pumpability of the material is good under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is less than or equal to the threshold value of the average value of the pumping pressure in the preset pumping processing window period; and/or
And under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is larger than the threshold value of the average value of the pumping pressure in the preset pumping processing window period, judging that the pumpability of the material is general.
16. A pumping control method, characterized by comprising:
determining pumpability of a material according to the method of any of claims 1-15; and
in the case that a pumping device that pumps the material is currently in a pumping process and the pumpability of the material is determined to be poor or general, controlling the pumping device with at least one of a set of pumping process improvement measures, wherein the set of pumping process improvement measures comprises: increasing a rotational speed of a main pump of the pumping apparatus, decreasing a displacement current of the main pump of the pumping apparatus, and increasing a displacement current of a constant pressure pump of the pumping apparatus; and/or
In the case that the pumping equipment is currently in a pumping process and the pumpability of the material is determined to be poor or general, controlling the pumping equipment by adopting at least one of a set of pump-up process improving measures, wherein the set of pump-up process improving measures comprises: increasing a rotational speed of a main pump of the pumping apparatus and decreasing a displacement current of the main pump of the pumping apparatus.
17. The pumping control method according to claim 16, wherein in a case where the pumpability of the material is determined to be poor and the pumpability of the material is not improved with the improvement measure, the pumping control method further comprises:
and taking early warning measures.
18. An apparatus for determining pumpability of a material, the apparatus comprising:
the system comprises an acquisition module, a storage module and a processing module, wherein the acquisition module is used for acquiring pumping pressure data in a pumping processing window period when the material is pumped, the pumping processing window period comprises at least one pumping material pushing process, and pumping equipment for pumping the material is currently in the pumping process;
the pumping process pumpability judgment parameter determining module is used for determining pumpability judgment parameters corresponding to the pumping processing window period according to the collected pumping pressure data; and
and the pumping process pumpability determining module is used for determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pumping processing window period and a pumpability judgment parameter threshold value of a preset pumping processing window period.
19. The apparatus according to claim 18, wherein the pumping processing window period includes a plurality of pumping material pushing processes, and the pumpability determination parameter corresponding to the pumping processing window period is a pumping pressure trend parameter, wherein the pumping pressure trend parameter represents a trend of a pumping pressure change within the pumping processing window period.
20. The apparatus of claim 18, wherein the determining of the pumpability of the material by the pumpability determination module according to the pumpability determination parameter corresponding to the pumping processing window period and a pumpability determination parameter threshold for a preset pumping processing window period comprises:
under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is less than or equal to the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is not poor; and/or
And under the condition that the pumpability judgment parameter corresponding to the pumping processing window period is greater than the pumpability judgment parameter threshold value of the preset pumping processing window period, judging that the pumpability of the material is poor.
21. The apparatus of claim 20, wherein the pumping process window comprises a plurality of the pumping strokes, the apparatus further comprising: the number counting module is used for counting the number of the pumping and pushing processes corresponding to the poor pumpability of the materials in a single pumping and pushing process within the pumping processing window period;
the pumping process pumpability determination module is further to: and according to the counted number and a preset number threshold value, dividing the materials which are judged to have poor pumpability into the materials with good pumpability or the materials with general pumpability.
22. The apparatus of claim 21, wherein the pump-handling-performance determining module classifies the material determined as not having the poor pump-handling performance as having the good pump-handling performance or having the pump-handling performance generally according to the counted number and a preset number threshold comprises:
judging that the pumpability of the material is good under the condition that the counted number is less than or equal to the preset number threshold; and/or
And under the condition that the counted number is larger than the preset number threshold value, judging that the pumpability of the material is general.
23. The apparatus of claim 21, wherein the counting module counts the number of the pumping material pushing processes corresponding to the determined poor pumpability of the material in the single pumping material pushing process within the pumping processing window period, and comprises:
for any of the pumped material pushing processes within the pumped processing window:
determining the pumpability judgment parameter corresponding to the pumping material pushing process; and
judging whether the pumpability of the material in the pumping and pushing process is poor or not according to the pumpability judgment parameter corresponding to the pumping and pushing process and a preset pumping judgment parameter threshold value of the pumping and pushing process; and
and counting the number of the pumping material pushing processes of which the pumpability of the material is judged to be poor so as to obtain the number.
24. The apparatus according to claim 23, wherein the pumpability determining parameter corresponding to the pumping material-pushing process is a pumping pressure stability parameter, wherein the pumping pressure stability parameter corresponding to one of the pumping material-pushing processes represents a discrete degree of pumping pressure in the pumping material-pushing process.
25. The apparatus of claim 24,
the pumping pressure stability parameter is a coefficient of variation,
for one pumping material pushing process, the fluctuation coefficient is the ratio of the standard deviation of the pressure in the pumping material pushing process to the average value of the pumping pressure in the pumping material pushing process.
26. The apparatus of claim 19, wherein the pumping pressure trend parameter is a slope of a line, wherein determining the slope of the line from the collected pumping pressure data comprises:
determining an average value of the pumping pressure of each pumping material pushing process in the pumping processing window period; and
determining the slope of the line using a line fitting method based on the determined average value of the pumping pressure.
27. The apparatus of any one of claims 18-26, further comprising:
the device comprises a pump starting process pumpability judgment parameter determining module, a pump starting process pumpability judgment module and a control module, wherein the pump starting process pumpability judgment parameter determining module is used for determining a pumpability judgment parameter corresponding to a pump starting process, and the pumping equipment is currently in the pump starting process; and
and the pump starting process pumpability determining module is used for determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pump starting process and a preset pump starting process pumpability judgment parameter threshold.
28. The apparatus according to claim 27, wherein the pumpability judgment parameter corresponding to the pumping process is a pumping pressure judgment parameter.
29. The apparatus of claim 28, wherein the pump-up process pumpability judgment parameter determining module determining the pump-up pressure judgment parameter comprises:
determining the average value and the characteristic of a pressure curve of pumping pressure in a pumping processing window period before a pumping stop stage and the corresponding pumping stop time of the pumping stop stage, wherein the pumping stop stage is a stage before the pumping process when the pumping equipment does not pump the material; and
determining the pump-up pressure evaluation parameter based on the determined average pumping pressure, the pressure curve characteristic, and the pump-down time.
30. The apparatus of claim 27, wherein the pump-up process pumpability determining module determining the pumpability of the material according to the pumpability judgment parameter corresponding to the pump-up process and a preset pump-up process pumpability judgment parameter threshold comprises:
under the condition that the pumpability judgment parameter corresponding to the pumping process is smaller than or equal to the pumpability judgment parameter threshold of the preset pumping process, judging that the pumpability of the material is not poor; and/or
And under the condition that the pumpability judgment parameter corresponding to the pumping process is larger than the preset pumpability judgment parameter threshold value, judging that the pumpability of the material is poor.
31. The apparatus of claim 30, wherein the pumpout process pumpability determination module is further configured to:
and classifying the material which is judged to have poor pumpability into good pumpability or normal pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump stopping stage and the threshold value of the average value of the pumping pressure in the preset pumping processing window period, wherein the pump stopping stage is a stage before the pump starting process when the pumping equipment does not pump the material.
32. The apparatus of claim 31, wherein the pump-up process pumpability determination module classifies the material determined to have poor pumpability as good pumpability or generally pumpability according to the average value of the pumping pressure in the pumping processing window period before the pump-down period and the threshold value of the average value of the pumping pressure in the preset pumping processing window period comprises:
judging that the pumpability of the material is good under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is less than or equal to the threshold value of the average value of the pumping pressure in the preset pumping processing window period; and/or
And under the condition that the average value of the pumping pressure in the pumping processing window period before the pump stopping stage is larger than the threshold value of the average value of the pumping pressure in the preset pumping processing window period, judging that the pumpability of the material is general.
33. A pumping control device, characterized by comprising:
the device of any one of claims 18-32; and
a control module to:
in the case that a pumping device pumping the material is currently in a pumping process and the pumpability of the material is determined to be poor or general, controlling the pumping device with at least one of a set of pumping process improvements, wherein the set of pumping process improvements comprises: increasing a rotational speed of a main pump of the pumping apparatus, decreasing a displacement current of the main pump of the pumping apparatus, and increasing a displacement current of a constant pressure pump of the pumping apparatus; and/or
In the case that the pumping equipment is currently in a pumping process and the pumpability of the material is determined to be poor or general, controlling the pumping equipment by adopting at least one of a set of pump-up process improving measures, wherein the set of pump-up process improving measures comprises: increasing a rotational speed of a main pump of the pumping apparatus and decreasing a displacement current of the main pump of the pumping apparatus.
34. The pumping control device of claim 33, further comprising:
and the early warning module is used for taking early warning measures under the condition that the pumpability of the material is judged to be poor and the pumpability of the material cannot be improved by adopting improvement measures.
35. A working machine, characterized in that the working machine comprises:
the device of any one of claims 18-32; or
A pumping control device as claimed in claim 33 or 34.
36. A machine-readable storage medium having stored thereon instructions for causing a machine to perform the method of any one of claims 1-15 or the pumping control method of claim 16 or 17.
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