CN116147950B - Water supply method and drip irrigation system performance test platform - Google Patents

Water supply method and drip irrigation system performance test platform Download PDF

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Publication number
CN116147950B
CN116147950B CN202310002132.7A CN202310002132A CN116147950B CN 116147950 B CN116147950 B CN 116147950B CN 202310002132 A CN202310002132 A CN 202310002132A CN 116147950 B CN116147950 B CN 116147950B
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water
drip irrigation
platform
irrigation system
irrigator
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CN116147950A (en
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王振华
杜柯欣
邢少博
刘宁宁
张继红
李淼
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Shihezi University
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Shihezi University
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion

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  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention provides a water supply method and a drip irrigation system performance test platform, wherein the water supply method comprises the following steps: acquiring a to-be-tested requirement of a target object and basic parameters of a variable-frequency water pump; determining a target water pressure form type based on the requirement to be tested; determining a target test parameter based on the target water pressure morphology type; generating a target water pressure curve based on the target test parameters and basic parameters of the variable-frequency water pump; and controlling the variable-frequency water pump to supply water to the target object according to the target water pressure curve. Different target water pressure curves are generated according to the to-be-tested requirements, the variable-frequency water pump is controlled to supply water to a target object according to the target water pressure curves, and the anti-blocking performance of the drip irrigation system and the drip irrigation belt/pipe is improved to a certain extent while the high-efficiency test of the anti-blocking performance of the drip irrigation system and the targets of various requirements of different users on the performance test of the drip irrigation system are realized.

Description

Water supply method and drip irrigation system performance test platform
Technical Field
The invention relates to the field of drip irrigation, in particular to a water supply method and a drip irrigation system performance test platform.
Background
The drip irrigation belt/pipe is one of key links and core equipment in a drip irrigation system, and an internal flow passage of the drip irrigation belt/pipe is usually narrow and is easy to be attached by impurities such as solid particles, microorganisms, soluble ions, organic matters and the like in a drip irrigation water source. With the popularization and development of the water and fertilizer integrated technology, the blocking phenomenon of the drip irrigation emitter is more complex and serious. The general solution is to improve the hydraulic performance or anti-blocking performance of the drip irrigation system by optimizing the structure of the emitter in the drip irrigation pipe or treating the water source, but the implementation difficulty and the optimization cost are high, so how to realize the high-efficiency test of the anti-blocking performance of the drip irrigation system and the drip irrigation pipe while reducing the change of the hydraulic performance of the drip irrigation pipe/the drip irrigation pipe becomes the current urgent problem.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that the cost for improving the hydraulic performance of the drip irrigation system is high, the implementation is difficult and the like in the prior art, such as optimizing the structure of the emitter, performing chemical/biological treatment on a water source, performing high-pressure irrigation and the like, and the comprehensive performance (anti-blocking performance and hydraulic performance) of the drip irrigation system and the drip irrigation belt/pipe cannot be rapidly and accurately tested, so that a water supply method and a drip irrigation system performance test platform are provided.
According to a first aspect, an embodiment of the present invention provides a water supply method applied to a multifunctional water pressure generating system including a variable frequency water pump, the method including:
acquiring a to-be-tested requirement of a target object and basic parameters of the variable-frequency water pump;
determining a target water pressure form type based on the to-be-tested demand;
determining a target test parameter based on the target water pressure morphology type;
generating a target water pressure curve based on the target test parameters and the basic parameters of the variable-frequency water pump;
and controlling the variable-frequency water pump to supply water to the target object according to the target water pressure curve.
Optionally, the multifunctional water pressure generating system further comprises a pressure transmitter, and the method further comprises:
Acquiring an electric signal corresponding to the water pressure at the inlet of the target object in real time based on the pressure transmitter;
adjusting basic parameters of the variable-frequency water pump based on the electric signals;
and adjusting the target water pressure curve based on the target test parameters and the adjusted basic parameters of the variable-frequency water pump, and returning to the step of controlling the variable-frequency water pump to supply water to the target object according to the target water pressure curve.
According to a second aspect, an embodiment of the present invention provides a drip irrigation system performance testing platform, the drip irrigation system performance testing platform comprising: the multifunctional water pressure generating system is connected with an irrigator water inlet end in the drip irrigation system through the pipeline system and is suitable for providing water pressure for testing the performance of the drip irrigation system for the drip irrigation system, wherein,
the multifunctional water pressure generation system comprises a water pressure regulation module and a variable-frequency water pump, wherein the water pressure regulation module comprises a memory and a processor, the memory and the processor are in communication connection, the memory stores computer instructions, and the processor executes the computer instructions so as to execute the method in the first aspect or any optional implementation manner of the first aspect;
The outlet end of the variable-frequency water pump is connected with the inlet end of the water and fertilizer integrated module of the drip irrigation system, and is suitable for supplying water to an irrigator of the drip irrigation system according to a target water pressure curve;
the measuring platform is connected with the outlet end of the irrigator of the drip irrigation system, and comprises a measuring device which is suitable for measuring the flow rate of the outlet end of the irrigator so as to detect the performance of the drip irrigation system.
Optionally, the measuring platform further comprises a measuring layer, wherein the measuring layer comprises a measuring chute and a chute support, the measuring chute is arranged on the chute support, the measuring chute is suitable for placing a measuring device for measuring the outlet end flow of the irrigator, and the measuring chute is detachably connected with the chute support and is suitable for testing the comprehensive performance of the irrigator.
Optionally, the multifunctional water pressure generating system further comprises: the pressure of the fluid in the fluid is transmitted to the pressure transmitter,
the pressure transmitter is characterized in that the input end of the pressure transmitter is connected with the outlet end of the water and fertilizer integrated module of the drip irrigation system, the output end of the pressure transmitter is connected with the water inlet end of the irrigator of the drip irrigation system, and the pressure transmitter is suitable for acquiring the water pressure of the water inlet end of the irrigator and converting the water pressure into an electric signal to be fed back to the water pressure regulating module.
Optionally, the drip irrigation system performance test platform further comprises: the support platform is respectively arranged at the front end and the tail end of the measuring platform, wherein the support platform comprises a support layer, a base and a support rope,
the supporting layer is suitable for providing support for the irrigator, a sheet-shaped structure which is flush with the top of the supporting layer is arranged in the supporting layer, through holes are formed in the sheet-shaped structure, and the sheet-shaped structure is suitable for providing support for the irrigator by the supporting cable;
the supporting rope is arranged in the sheet-shaped structure in a penetrating way;
the base is adapted to secure the support layer.
Optionally, the drip irrigation system performance test platform further comprises: the filtering module is used for filtering the liquid,
one end of the filtering module is connected with the outlet end of the variable-frequency water pump, and the other end of the filtering module is connected with the water and fertilizer integrated module and is suitable for filtering impurities at the outlet end of the variable-frequency water pump.
Optionally, the drip irrigation system performance test platform further comprises: the outlet end of the water storage tank is connected with the inlet end of the variable-frequency water pump.
Optionally, the drip irrigation system performance test platform further comprises: the water recovery system comprises a backwater chute, a collecting tank and a water suction pump, wherein,
One end of the backwater chute is fixed on a supporting platform base at the tail end of the measuring platform, the other end of the backwater chute is fixed at the front end of the measuring platform and is connected with one end of the collecting tank, and the chute direction is inclined from the supporting platform base to the front end of the measuring platform and is suitable for collecting water flowing out of the drip irrigation system;
the other end of the collecting tank is connected with the inlet end of the water suction pump;
the outlet end of the water suction pump is connected with the inlet end of the water storage tank, and is suitable for collecting the recovered water.
Optionally, the irrigator is a drip irrigation pipe/strip, and the irrigator is suspended above the measuring platform by the supporting platform.
The technical scheme of the invention has the following advantages:
1. according to the water supply method provided by the invention, the requirement to be tested of the target object and the basic parameter of the variable-frequency water pump are obtained; determining a target water pressure form type based on the to-be-tested demand; determining a target test parameter based on the target water pressure morphology type; generating a target water pressure curve based on the target test parameters and the basic parameters of the variable-frequency water pump; and controlling the variable-frequency water pump to supply water to the target object according to the target water pressure curve. Different target water pressure curves are generated according to the to-be-tested requirements, the variable-frequency water pump is controlled to supply water to a target object according to the target water pressure curves, so that not only is the efficient test on the anti-blocking performance of the drip irrigation system and the drip irrigation belt/pipe realized, but also the optimization cost is reduced while the targets of different users for testing the performance of the drip irrigation system are met, and the anti-blocking performance of the drip irrigation system is improved to a certain extent.
2. According to the drip irrigation system performance test platform, the multifunctional water pressure generation system is arranged, the water pressure regulation and control module in the multifunctional water pressure generation system is utilized to generate the target water pressure curve meeting the requirement to be tested, and the target water pressure curve is input into the variable-frequency water pump, so that the variable-frequency water pump is controlled to supply water to the drip irrigation system, and powerful guarantee is provided for subsequent drip irrigation system performance test; connecting the multifunctional water pressure generating system with a measuring platform through a pipeline system; based on the target water pressure curve which meets the test requirement generated by the multifunctional water pressure generating system, the variable-frequency water pump is controlled to supply water to the test platform through the pipeline system, and the performance test of the drip irrigation system is carried out through the measuring device, so that the high-efficiency test of the drip irrigation system and the anti-blocking performance of the drip irrigation belt/pipe is realized, the targets of different users on various requirements of the performance test of the drip irrigation system are met, the optimization cost is reduced, and the anti-blocking performance of the drip irrigation system is improved to a certain extent.
3. According to the drip irrigation system performance test platform, the measuring chute and the chute bracket are arranged, so that necessary structural support is provided for effectively measuring the performance of an irrigator of the drip irrigation system, the stable placement of the measuring device is ensured, the measuring process is controlled rapidly and accurately, the accuracy of a measuring result is further ensured, and the loading and unloading difficulty is reduced.
4. According to the drip irrigation system performance test platform provided by the invention, the pressure transmitter is arranged in the multifunctional water pressure generation system, the input end of the pressure transmitter is connected with the outlet of the drip irrigation system water-fertilizer integrated module, the output end of the pressure transmitter is connected with the water inlet end of the irrigator, the water pressure of the water inlet end of the irrigator can be effectively obtained by arranging the pressure transmitter between the water-fertilizer integrated module and the irrigator, and the data is fed back to the water pressure regulation and control module in real time to regulate the target water pressure curve in real time, so that the water pressure for testing can meet the test requirement of a user, and the performance test efficiency and accuracy are greatly improved.
5. The drip irrigation system performance test platform provided by the invention further comprises a support platform, wherein the support platform is provided with a support layer, a base and a support cable, the support layer is arranged to provide support for the irrigator, furthermore, a sheet-shaped structure which is flush with the top of the support layer is arranged on the support layer, a through hole is arranged in the sheet-shaped structure, one end of the support cable can be fixed on the support platform through the through hole, the base and the support cable are matched and fixed, the placement stability of the irrigator is ensured, the relative position fixation of the irrigator and the measurement platform is further ensured, and necessary early-stage guarantee is provided for effectively performing the drip irrigation system performance test.
6. The drip irrigation system performance test platform provided by the invention further comprises a filtering module, wherein the filtering module is arranged at the outlet end of the variable-frequency water pump, so that test water is filtered, excessive impurities are prevented from entering the water and fertilizer integrated module and further entering the irrigation pipe of the drip irrigation system, the influence of the impurities on the performance test of the drip irrigation system is greatly reduced, and finally, the efficient test of the drip irrigation system is realized.
7. According to the drip irrigation system performance test platform, the water storage tank is arranged at the inlet end of the variable-frequency water pump, so that test water is provided for the drip irrigation system performance test platform, and the water supply stability in the test process is ensured.
8. According to the drip irrigation system performance test platform, the water recovery system is arranged, so that test water can be quickly and simply recovered, a large amount of water resources are prevented from being wasted, wherein the water recovery system is provided with the water return chute, the direction of the water return chute is inclined along the front end of the measurement platform, the water automatically flows into the collecting tank by utilizing the gravity effect, and the collected recovered water is sent to the water storage tank by the water suction pump, so that the water storage tank can be used for subsequent test again, and the drip irrigation system performance test platform is more environment-friendly.
9. According to the performance test platform for the drip irrigation system, provided by the invention, the irrigator in the drip irrigation system is a drip irrigation pipe/belt, and the irrigator is suspended above the measurement platform, so that the test water in the irrigator can directly fall into the measurement device at the measurement platform, and the accuracy of a measurement result is effectively ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a drip irrigation system performance testing platform according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a hydraulic pressure control module according to an embodiment of the present invention;
FIG. 3 is a schematic view of an external structure of a hydraulic pressure control module according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating an internal structure of a hydraulic pressure control module according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a measurement platform according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a multifunctional hydraulic pressure generating system according to an embodiment of the present invention;
FIG. 7 is a schematic view of a supporting platform according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a header platform according to an embodiment of the present invention;
FIG. 9 is a side view of a water recovery system according to an embodiment of the present invention;
FIG. 10 is a top view of a water recovery system according to an embodiment of the present invention;
FIG. 11 is a flow chart of a water supply method according to an embodiment of the present invention;
FIG. 12 is a graph of sinusoidal water pressure for an embodiment of the present invention;
FIG. 13 is a graph of trapezoidal water pressure according to an embodiment of the present invention;
FIG. 14 is a rectangular water pressure graph of an embodiment of the present invention;
fig. 15 is a triangular water pressure graph of an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," second, "" third, "" fourth, "and fifth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
With the popularization and development of the water and fertilizer integrated technology, the blocking phenomenon of the drip irrigation emitter is more complex and serious, the common drip irrigation system testing platform at present has the defects of higher testing cost, lower efficiency and the like, on the basis, the embodiment of the invention provides the drip irrigation system performance testing platform, and the modularized design is adopted, so that the defects of high testing cost, low testing efficiency and the like are overcome, the operation is more convenient, and further, the embodiment of the invention provides a fluctuation water pressure working condition on the basis of providing constant water pressure, and can improve the blocking resistance to a greater extent while reducing the influence on the hydraulic performance of the emitter. Specifically, as shown in fig. 1, the drip irrigation system performance test platform includes: the multifunctional water pressure generating system 100, the measuring platform 19 and the pipeline system 200, wherein the multifunctional water pressure generating system 100 is connected with the water inlet end of the irrigator 11 in the drip irrigation system through the pipeline system 200 and is suitable for providing water pressure for testing the performance of the drip irrigation system to the drip irrigation system, and the multifunctional water pressure generating system comprises a water pressure measuring device, a water pressure measuring device and a water pressure measuring device, wherein,
The multifunctional water pressure generating system 100 comprises a water pressure regulating module 1 and a variable frequency water pump 2, wherein the water pressure regulating module 1 comprises a processor 901 and a memory 902, the memory 902 and the processor 901 are in communication connection, the processor 901 and the memory 902 can be connected through a bus or other modes, and the connection is exemplified by the bus in fig. 2.
The processor 901 may be a central processing unit (Central Processing Unit, CPU). The processor 901 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination thereof.
The memory 902 is used as a non-transitory computer readable storage medium for storing non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the methods of the embodiments of the present invention. The processor 901 executes various functional applications of the processor 901 and data processing, i.e., implements the methods in the above-described method embodiments, by running non-transitory software programs, instructions, and modules stored in the memory 902.
The memory 902 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created by the processor 901, and the like. In addition, the memory 902 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 902 optionally includes memory remotely located relative to processor 901, which may be connected to processor 901 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
One or more modules are stored in the memory 902 that, when executed by the processor 901, perform the methods in the method embodiments described below.
Specifically, as shown in fig. 3, the outside of the water pressure regulating module 1 includes a real-time pressure data display module 20 and a manual operation module 21, wherein, for the convenience of user operation, the user can implement the generation of the target water pressure by touching the manual operation module 21 to set options such as waveform, fluctuation period, pressure range, duration, highest pressure and lowest pressure. In practical application, the hydraulic regulation and control module can also be connected with a computer to realize remote control. The real-time pressure data display module 20 displays and stores the received pressure data, and may set the data acquisition frequency, acquisition time, and display time of the pressure pattern, pressure range, and other values. Specifically, the real-time pressure data display module 20 is provided with a touch screen (not shown in the figure) for facilitating the touch operation of the tester and a data export interface (not shown in the figure), which may be a universal USB interface for facilitating the insertion of mobile storage media such as a USB disk.
Specifically, as shown in fig. 4, the water pressure regulating module 1 includes a PLC controller 22, a frequency converter 23, a control system 25 and a related circuit 24, where the PLC controller 22 can control the variable frequency water pump 2 through the frequency converter 23 to generate periodic fluctuating water pressure or constant water pressure in different forms, and the control system 25 controls various hardware in the multifunctional water pressure generating system 100 and operation of the variable frequency water pump 2, and the arrangement and use method of each component can refer to related descriptions in the prior art and will not be repeated herein.
The specific details of the water pressure regulating module 1 may be correspondingly understood by referring to the corresponding related descriptions and effects in the following method embodiments, and will not be repeated here.
The outlet end of the variable-frequency water pump 2 is connected with the inlet end of the water and fertilizer integrated module 4 of the drip irrigation system, and is suitable for supplying water to the irrigator 11 of the drip irrigation system according to a target water pressure curve.
Specifically, in practical application, the variable frequency water pump 2 may be a three-phase ac variable frequency water pump. By matching with other circuit components, the pressure value required by the drip irrigation system performance test platform, the number of irrigators 11 and the flow rate are detected.
The measuring platform 19 is connected to the outlet end of the irrigator 11 of the drip irrigation system, the measuring platform 19 comprises a measuring device 34, the measuring device 34 is adapted to measure the flow rate of the outlet end of the irrigator 11 to detect the performance of the drip irrigation system.
Specifically, the structure of the measuring platform 19 is shown in fig. 5, and the measuring platform 19 is used for testing the flow rate of the outlet end of the irrigator 11, so that the performance test of the irrigator 11 under different water pressures is completed.
Specifically, in practical application, due to development of the water and fertilizer integration technology, a core element drip irrigation emitter in the irrigator 11 has been developed from an initial irrigation function to a multifunctional direction such as irrigation-fertilization, and composite blockage of the drip irrigation emitter becomes a main problem of blockage of the irrigator 11.
The irrigator 11 blockage is a process caused by long-term operation, and the current mainstream test method has a short-period reinforced physical blockage test or a long-period composite blockage test, and the embodiment of the invention can be used for completing the test and optimization of the hydraulic performance and the anti-blockage performance of the irrigator 11 by arranging the water-fertilizer integrated module 4 to adjust the water quality of a water source (adjust parameters such as the type, the content and the concentration of the fertilizer 5) and combining the multifunctional water pressure generating system 100 (generate different types of water pressure) and the water-fertilizer integrated module 4 (control parameters such as the type, the concentration and the quality of the fertilizer 5).
Specifically, in practical application, the water quality affecting the water source mainly comprises two factors, namely fertilizer and silt, wherein the adjustment of the fertilizer can be realized by adjusting the type, content and concentration of the fertilizer 5 in the water and fertilizer integrated module 4. For the adjustment of the silt factor, reference may be made to the following description of the water tank 300, and the details will not be repeated here.
The composite blockage of the irrigator 11 consists of physical, chemical and biological blockage, and the fertilizer 5 can have important influence on the three factors at the same time, so the water and fertilizer integrated module 4 in the system can be switched on and off and is used for analyzing the influence of parameters such as the water and fertilizer uniformity (which can be called as water and fertilizer uniformity) and the type, concentration and quality of the fertilizer 5 on the hydraulic performance and the anti-blockage performance of the irrigator 11 in the operation process of the drip irrigation belt/pipe.
According to the embodiment of the invention, the first valve 6 and the second valve 15 are respectively arranged at the front and the rear of the water and fertilizer integrated module 4, so that the water and fertilizer integrated module 4 is suitable for being switched on and off, the fertilizer 5 in the water and fertilizer integrated module 4 is convenient to replace, the blocking process of the simulated irrigator 11 is closer to the actual situation, and the accuracy of a test result is further ensured.
According to the drip irrigation system performance test platform provided by the embodiment of the invention, the multifunctional water pressure generation system 100 is arranged, the water pressure regulation and control module 1 in the multifunctional water pressure generation system 100 is utilized to generate a target water pressure curve meeting the requirement to be tested, and the target water pressure curve is input into the variable-frequency water pump 2, so that the variable-frequency water pump 2 is controlled to supply water to the drip irrigation system, and a powerful guarantee is provided for subsequent performance test of the drip irrigation system; connecting the multifunctional water pressure generating system 100 with the measuring platform 19 by arranging a pipeline system 200; based on the target water pressure curve which meets the test requirement generated by the multifunctional water pressure generating system 100, the variable-frequency water pump 2 is controlled to supply water to the test platform through the pipeline system 200, and the performance test of the drip irrigation system is carried out through the measuring device 34, so that not only is the efficient test on the performance test of the drip irrigation system and the drip irrigation belt/pipe realized, but also the optimization cost is reduced while the targets of different users on the performance test of the drip irrigation system are met, and the anti-blocking performance of the drip irrigation system is improved to a certain extent.
Specifically, in one embodiment, the measuring platform 19 further includes a measuring layer 31, where the measuring layer 31 includes a measuring chute 32 and a chute support 33, the measuring chute 32 is disposed on the chute support 33, the measuring chute 32 is adapted to place a measuring device 34 for measuring the flow rate at the outlet end of the irrigator 11, and the measuring chute 32 and the chute support 33 are detachably connected, so as to be adapted to test the comprehensive performance of the irrigator 11.
Specifically, in practical application, as shown in fig. 5, the measuring platform 19 provided by the embodiment of the invention has a measuring function, is used for measuring the water flow of the outlet end of the irrigator 11, and the setting position and number of the measuring platform 19 can be set according to the actual test requirement, can be set in a non-fixed manner, can be set at intervals of 2-5m according to the number of measuring points, and can also be set in a whole course.
Specifically, the measuring platform 19 is provided with two layers of measuring layers 31, the measuring layers 31 are provided with a chute bracket 33 and a measuring chute 32, and the two layers of measuring layers are detachably connected, wherein the measuring chute 32 is detachable and is used for placing a measuring device 34 for measuring the flow of the irrigator 11, the cross section of the measuring chute 32 is concave, and the measuring chute 32 is arranged on the chute bracket 33; the chute support 33 is not detachable.
Specifically, the measuring devices 34 may be pressure sensors respectively disposed on the measuring chute 32, and may also be related containers having a collecting function. Specifically, in practical application, the flow condition of the irrigator 11 can be calculated by performing mass measurement or pressure acquisition on the test water collected in the measuring device 34 and combining the test time.
Specifically, in practical application, the water at the outlet of the irrigator 11 collected by the measuring device 34 can be recovered, purified and reused later, so that unnecessary waste of test water can be greatly reduced, and the circulating water efficiency of the drip irrigation system performance test platform is further improved.
The drip irrigation system performance test platform provided by the embodiment of the invention provides necessary structural support for effectively measuring the performance of the drip irrigation system irrigator 11 by arranging the measuring chute 32 and the chute bracket 33, ensures the stable placement of the measuring device 34, rapidly and accurately controls the measuring process, further ensures the accuracy of the measuring result and reduces the loading and unloading difficulty.
Specifically, in an embodiment, the multifunctional water pressure generating system 100 further includes: the pressure transmitter 7 is provided with a pressure sensor,
the input end of the pressure transmitter 7 is connected with the outlet end of the water and fertilizer integrated module 4 of the drip irrigation system, the output end of the pressure transmitter 7 is connected with the water inlet end of the irrigator 11 of the drip irrigation system, and the pressure transmitter is suitable for acquiring the water pressure of the water inlet end of the irrigator 11 and converting the water pressure into an electric signal to be fed back to the water pressure regulating module 1.
Specifically, in practical applications, the pressure transmitter 7 may record the pressure value of the irrigator 11 in real time and transmit the data to the water pressure regulating module 1 through an electric circuit. Specifically, the pressure transmitter 7 may be disposed on a water inlet pipe in front of the irrigator 11, monitors the water pressure change at the water inlet of the irrigator 11 in real time, and converts the pressure signal into an output electric signal that is usable to be transmitted to the water pressure regulating module 1, so as to complete the control of the variable frequency water pump 2.
Specifically, in practical applications, because the curve of the fluctuating water pressure generated by the multifunctional water pressure generating system 100 cannot be completely fit to the ideal curve in practice, similar to the integration principle, the smaller the collection frequency of the pressure transmitter 7, the better the frequency response performance of the variable frequency water pump 2 to the frequency, the more the fluctuating water pressure waveform fits to the ideal curve, and this process is determined by the performances of the pressure transmitter 7 and the variable frequency water pump 2, and the measurement range of the pressure transmitter 7 may be set to 6MPa, and the collection frequency may be set to 10Hz, that is, the data is collected once at intervals of 0.1 s. The acquisition time of the pressure transmitter 7 can be determined by the user's needs and the storage space.
Specifically, in practical application, as shown in fig. 6, the multifunctional water pressure generating system 100 includes a water pressure regulating module 1, a variable frequency water pump 2 and a pressure transmitter 7, and a user can generate constant water pressure or variable fluctuation mode, fluctuation period and fluctuation amplitude fluctuation water pressure according to a setting, so as to realize the test targets of generating different target water pressure curves and testing the performance of the irrigator 11 according to different water pressure curves.
In actual operation, the variable-frequency water pump 2 is controlled by the water pressure regulating module 1 to generate target water pressure, the pressure transmitter 7 measures the pressure value of the water inlet pipe in front of the irrigator 11 in real time and feeds the value back to the water pressure regulating module 1, when the feedback value reaches the preset threshold value of the water pressure regulating module 1, the water pressure regulating module 1 controls the variable-frequency water pump 2 to perform the next action, the pressure transmitter 7 continuously feeds back the pressure value to the water pressure regulating module 1 in real time after the pressure is changed, the process is circularly reciprocated, and then constant water pressure or periodic fluctuation water pressure in different forms is generated.
According to the drip irrigation system performance test platform provided by the embodiment of the invention, the pressure transmitter 7 is arranged in the multifunctional water pressure generation system 100, the input end of the pressure transmitter 7 is connected with the outlet of the drip irrigation system water and fertilizer integrated module 4, the output end of the pressure transmitter 7 is connected with the water inlet end of the irrigator 11, the water pressure of the water inlet end of the irrigator 11 can be effectively obtained by arranging the pressure transmitter 7 between the water and fertilizer integrated module 4 and the irrigator 11, and the data is fed back to the water pressure regulation and control module 1 in real time to regulate the target water pressure curve in real time, so that the water pressure for testing can meet the test requirement of a user, and the performance test efficiency and accuracy are greatly improved.
Specifically, in an embodiment, the drip irrigation system performance test platform provided by the embodiment of the invention further includes: a support platform 9, wherein the support platform 9 is respectively arranged at the front end and the tail end of the measuring platform 19, the support platform 9 comprises a support layer 51, a base 52 and a support cable 50,
the supporting layer 51 is suitable for providing support for the irrigator 11, a sheet-shaped structure 53 which is flush with the top of the supporting layer 51 is arranged in the supporting layer 51, a through hole is arranged in the sheet-shaped structure 53, and the sheet-shaped structure 53 is suitable for providing the supporting rope 50 to provide support for the irrigator 11;
the supporting cable 50 is arranged in the sheet-shaped structure 53 in a penetrating way;
the base 52 is adapted to secure the support layer 51.
Specifically, as shown in fig. 1 and 7, the supporting platform 9 is used for supporting the irrigator 11, so that deformation of the irrigator 11 is reduced, influence of suspension deformation of the irrigator 11 on internal water flow of the irrigator 11 is reduced to the greatest extent, and accuracy of performance results of the irrigator 11 is guaranteed.
Specifically, as shown in fig. 7, the supporting platform 9 of the embodiment of the present invention is provided with two supporting layers 51, and a sheet structure 53 perforated at the top of the supporting layers 51 and leveled with the top is provided for arranging supporting cables 50 so as to connect with the measuring platform 19 or with the next supporting platform 9 to fix the irrigator 11. On this basis, the supporting platform 9 of the embodiment of the invention is further provided with a reinforcing base 52, wherein the base 52 is used for fixing the supporting platform 9, and stable support of the supporting platform 9 is ensured.
Specifically, in practical application, the supporting platforms 9 may be disposed at the front end and the rear end of the measuring platform 19, so as to avoid the situation that the irrigator 11 deforms due to gravity, resulting in inaccurate test data, but the practical situation is not limited thereto, the number and the setting positions of the supporting platforms 9 may be changed according to the length of the irrigator 11 and the practical test requirements, and the change of the number and the setting positions of the supporting platforms 9 to ensure the accuracy of the test data is also within the protection scope of the drip irrigation system performance test platform provided by the embodiment of the present invention.
Specifically, in practical application, when the supporting platform 9 is disposed at the front end and the rear end of the measuring platform 19, the supporting platform can be fixed on the ground through the supporting cable 50 by means of a wire rope or the like, so as to enhance the stability of the supporting platform; when the setting of supporting platform 9 is in intermediate position, non-measuring platform 19 front end, rear end, supporting cable 50 can provide the support for irrigator 11, and irrigator 11 accessible iron wire helps to be fixed on the supporting cable 50, avoid irrigator 11 to appear warping because of gravity, guarantee test data's accuracy.
It should be noted that, the front end and the rear end of the measuring platform 19 may be determined according to the front end and the tail end of the irrigator 11, that is, the front end of the irrigator 11 may be regarded as the front end of the measuring platform 19 before measuring the position, and the tail end of the irrigator 11 may be regarded as the rear end of the measuring platform 19 after measuring the position.
The drip irrigation system performance test platform provided by the embodiment of the invention further comprises a support platform 9, wherein the support platform 9 is provided with a support layer 51, a base 52 and a support cable 50, the support layer 51 is arranged to provide support for the irrigator 11, furthermore, a sheet structure 53 which is flush with the top of the support layer 51 is arranged on the support layer 51, a through hole is arranged in the sheet structure 53, the support cable 50 can be fixed on the support platform 9 through one end of the through hole, the base 52 and the support cable 50 are matched and fixed, the placement stability of the irrigator 11 is ensured, the relative position of the irrigator 11 and the measurement platform 19 is further ensured to be fixed, and necessary early-stage guarantee is provided for effectively performing the drip irrigation system performance test.
Specifically, in practical application, considering the possible deformation of the irrigator 11 due to its own weight, the embodiment of the present invention further designs the header platform 10 on the basis of combining the combined actions of the measurement platform 19 and the support platform 9, and the schematic structural diagram is shown in fig. 8.
Specifically, the header platform 10 includes a header supporting layer 40 and a header measuring layer 41, which have the dual functions of the measuring platform 19 and the supporting platform 9, have the functions of connection, support and measurement, and can be used for supporting the pipeline system 200 and the irrigator 11, and the header platform 10 of the embodiment of the invention can be arranged at the front end of the measuring platform 19 or at the front end and the rear end of the measuring platform 19 at the same time, so as to ensure that the irrigator 11 cannot deform due to self gravity, but the actual situation is not limited to this, and the arrangement position and the number of the header platform 10 can be changed according to the actual test requirements.
Specifically, the specific functions of the header platform 10 provided in the embodiment of the present invention are as follows:
(1) the connection function is as follows: connecting piping system 200 with irrigator 11.
(2) Support function: the bottom of the support platform is provided with a sheet-shaped punching structure (not shown in the figure, the structure is similar to a sheet-shaped structure 53 provided with a through hole at the support platform 9, and the details are not repeated here) for fixing the platform; its header support layer 40 may support irrigator 11 to reduce its deformation. It should be noted that, in practical applications, when the irrigator 11 is laid with a longer length, obvious deformation will usually occur, and the irrigator 11 needs to keep long and straight and horizontal during operation, and the deformation (bending and twisting) will affect the smooth passing of the pressurized water flow, so as to affect the accuracy of the platform measurement result. According to the embodiment of the invention, the irrigator 11 can be effectively supported through the head supporting layer 40 by arranging the head platform 10, so that the possibility of deformation of the irrigator 11 is greatly reduced, and the accuracy of a test result is ensured.
(3) Measurement function: the header platform 10 is provided with two header measurement layers 41, and the usage of the header measurement layers 41 can refer to the usage of the measurement layer 31 of the measurement platform 19, and will not be described herein.
It should be noted that, the support platform 9 according to the embodiment of the present invention has a support function (only has the support layer 51), the 1 st support platform 9 is disposed next to the header platform 10, and the 2 nd support platform 9 is disposed at a distance of 5-10m after the header platform 10. The two layers of supporting layers 51 of the supporting platform 9 are provided with the sheet-shaped structures 53 which are used for binding rope-shaped structures such as steel wires passing through two through holes in the sheet-shaped structures 53, so that the irrigator 11 is fixed on the steel wires in a binding belt mode, the deformation of the irrigator 11 is reduced, and the form stability of the irrigator 11 is ensured. The bottom sheet-like structure 53 with through holes is used for fixing the support platform 9.
In addition, the sheet-like perforated structure provided at the bottom of the header platform 10 and the sheet-like structure 53 provided at the bottom of the support platform 9 may be fixed to the ground by means of expansion screws or the like.
Specifically, the header platform 10 has the same measuring principle and similar measuring structure as the measuring platform 19, and the header platform 10 is provided with a header measuring chute 42 and a header chute bracket 43, and the measuring device 34 is placed through the measuring chute 32, so that the purpose of quickly starting or stopping measuring the water flow of the outlet end of the irrigator 11 is realized.
In practical use, the measurement chute 32 with the measurement device 34 placed on the head measurement layer 41 and/or the measurement layer 31 can be slid to the position right below the preset sampling point of the irrigator 11 in sequence according to the same time interval, the sampling at all the sampling points is completed, after the sampling time is over, the measurement chute 32 is slid to the position below the sampling point in sequence according to the previous sliding sequence according to the same time interval, the test is stopped, and then the electronic balance is used for weighing the sample to calculate the water quantity at the outlet end of the irrigator 11.
On the basis of fully considering the deformation problem of the irrigator 11 caused by self gravity, the embodiment of the invention designs the header platform 10 according to the measurement function of the measurement platform 19 and the support function of the support platform 9, and the header platform 10 is matched with the support platform 9 and the measurement platform 19 and has the functions of supporting and measuring, so that the situation that the irrigator 11 is possibly inaccurate in test result due to deformation is avoided, the test efficiency is improved, the high-efficiency accurate test of the irrigator 11 is realized, and the test efficiency is greatly improved.
Specifically, in an embodiment, the drip irrigation system performance test platform provided by the embodiment of the invention further includes: the filtering module 3 is provided with a filtering means,
one end of the filtering module 3 is connected with the outlet end of the variable-frequency water pump 2, and the other end of the filtering module is connected with the water and fertilizer integrated module 4, so that impurities at the outlet end of the variable-frequency water pump 2 are filtered.
Specifically, in practical applications, as shown in fig. 1, the filtering module 3 may be disposed at an outlet end of the variable frequency water pump 2, for filtering particulate matters in the pipeline system 200. The filtering module 3 can select a net filter, a lamination filter and the like according to actual testing requirements, and the filtering mode and type of the filtering module 3 can be selected and replaced according to cost and testing requirements.
In particular, in practical applications, the conventional filter is mainly used for filtering particulate matters such as particles, sand, scale and the like in irrigation water, and can also be used for filtering irrigation water containing a small amount of organic dirt (fertilizer particles, animal hair, plant debris). The filtered substances mainly comprise granular substances such as muddy sand, fertilizer which is not completely dissolved and the like contained in irrigation water, and strip-shaped, flocculent or filiform substances such as animal hair, plant fragments and the like. Common filters include centrifugal filters, sand filters, laminated filters, mesh filters, and the like.
Illustratively, the embodiment of the invention employs a mesh filter comprising a housing and a screen disposed therein, the principle being that dirt in the water is filtered by small holes in the screen after the dirt-laden water flow passes through the screen. The filter screen is usually a nylon screen or a stainless steel screen, and is classified into 120 mesh, 150 mesh, 200 mesh and the like, and the smaller the particle size of particles which can pass through the filter screen with larger mesh number is, the stronger the filtering capability is. In practical applications, the selection of the filtering module 3 may be comprehensively considered according to the filtering requirement, the installation location, the cleaning mode and the cost.
The drip irrigation system performance test platform provided by the embodiment of the invention further comprises the filter module 3, wherein the filter module 3 is arranged at the outlet end of the variable-frequency water pump 2 to filter test water, so that excessive impurities are prevented from entering the water-fertilizer integrated module 4 and further entering an irrigation pipe of the drip irrigation system, the influence of the impurities on the performance test of the drip irrigation system is greatly reduced, the actual running condition of the drip irrigation system in a field is simulated as much as possible, and finally the efficient test of the drip irrigation system is realized.
Specifically, in an embodiment, the drip irrigation system performance test platform provided by the embodiment of the invention further includes: the outlet end of the water storage tank 300 is connected with the inlet end of the variable-frequency water pump 2.
Specifically, in practical application, as shown in fig. 1, the water tank 300 is disposed at an inlet end of the variable-frequency water pump 2, an outlet end of the water tank 300 is connected to the inlet end of the variable-frequency water pump 2, and the variable-frequency water pump 2 can pump water in the water tank 300 to use in a test process, so as to realize recycling of the test water.
According to the drip irrigation system performance test platform provided by the embodiment of the invention, the water storage tank 300 is arranged at the outlet end of the variable-frequency water pump 2, so that test water is provided for the drip irrigation system performance test platform, and the water supply stability in the test process is ensured.
Further, as the water quality is greatly influenced by the fertilizer and the sediment, the sediment is added into the water storage tank 300, and the content and the particle size concentration of the sediment are adjusted, so that the water quality can be adjusted, different testing environments are formed, and different testing requirements are met.
Specifically, in an embodiment, the drip irrigation system performance test platform provided by the embodiment of the invention further includes: a water recovery system 400, the water recovery system 400 comprising a backwater chute 14, a collecting tank 13 and a suction pump 12, wherein,
one end of the backwater chute 14 is fixed on a base 52 of the supporting platform 9 at the tail end of the measuring platform 19, the other end of the backwater chute is fixed at the front end of the measuring platform 19 and is connected with one end of the collecting tank 13, and the chute direction is inclined from the base 52 of the supporting platform 9 to the front end of the measuring platform 19 and is suitable for collecting water flowing out of the drip irrigation system;
The other end of the collecting tank 13 is connected with the inlet end of the water suction pump 12;
the outlet end of the suction pump 12 is connected to the inlet end of the water storage tank 300, and is adapted to collect the recovered water.
Specifically, in practical application, as shown in fig. 9 and 10, the water recovery system 400 provided in the embodiment of the present invention includes the water return chute 14, the collecting tank 13 and the water suction pump 12, wherein one end of the water return chute 14 is fixed at the end of the irrigator 11, and the other end is fixed at the measuring platform 19 and inclined towards the measuring platform 19, but in practical application, considering the problem that the irrigator 11 deforms due to self gravity, the embodiment of the present invention is provided with the header platform 10 at the head end, or the head and tail ends, of the irrigator 11, and therefore, the other end of the water return chute 14 is fixed at the header platform 10 and inclined towards the header platform 10, and the arrangement schematic diagram is shown in fig. 1.
Specifically, in practical application, the middle part of the water return chute 14 is lower, and two sides of the water return chute are higher, and the two water return chutes are symmetrically arranged on the drip irrigation system performance test platform and are used for collecting water flowing out of the irrigator 11.
Specifically, in practical application, the cross section of the collecting tank 13 is in a "concave" shape, and is disposed at the lower side (the header platform 10 side) of the water return chute 14, for receiving water flowing out of the water return chute 14. The collection tank 13 may be a relatively low cost, water impermeable structure such as a plastic plate, tarpaulin, or the like.
Specifically, in practical application, the water suction pump 12 is connected with the collecting tank 13 and the water storage tank 300 through the pipeline system 200, and is used for pumping water flow in the collecting tank 13 into the water storage tank 300, so that the purposes of quickly and easily recycling water and reducing water resource waste are achieved.
According to the drip irrigation system performance test platform provided by the embodiment of the invention, the water recovery system 400 is arranged, so that test water can be quickly and simply recovered, and a large amount of water resources are prevented from being wasted, wherein the water is automatically flowed into the collecting tank 13 by the gravity effect through arranging the water return chute 14 and arranging the chute direction to incline along the front end of the measuring platform 19, and the collected recovered water is sent to the water storage tank 300 through the water suction pump 12, so that the water can be reused in subsequent tests, and the drip irrigation system performance test platform is more environment-friendly.
Specifically, in one embodiment, the drip irrigation system performance testing platform provided by the embodiment of the present invention, the irrigator 11 is a drip irrigation pipe/belt, and the irrigator 11 is suspended above the measuring platform 19 through the supporting platform 9.
Specifically, in practical application, the irrigator 11 provided by the embodiment of the invention can simultaneously form a drip irrigation pipe network by connecting a plurality of drip irrigation pipes/belts in parallel, and perform performance test on the drip irrigation pipe network. To facilitate the individual testing of each drip irrigation pipe/strip, embodiments of the present invention also provide a valve (not shown) in front of each drip irrigation pipe/strip, which may be, for example, a ball valve, butterfly valve, solenoid valve, etc., to provide more flexibility in testing.
According to the performance test platform for the drip irrigation system, provided by the embodiment of the invention, the irrigator 11 in the drip irrigation system is a drip irrigation pipe/belt, and the irrigator 11 is suspended above the measurement platform 19, so that the test water in the irrigator 11 can directly fall into the measurement device at the measurement platform 19, and the accuracy of a measurement result is effectively ensured.
Specifically, in practical applications, the embodiment of the present invention is further provided with a bypass 8 at the outlet of the pressure transmitter 7, which is adapted to connect the piping system 200 and the drip irrigation pipe network.
Specifically, in practical application, the embodiment of the invention is further provided with the third valve 16 between the outlet end of the water tank 300 and the variable frequency water pump 2, which is suitable for replacing the water tank 300 or overhauling and replacing the variable frequency water pump 2.
Specifically, in practical applications, the embodiment of the present invention is provided with the fourth valve 17 at the inlet end of the pressure transmitter 7, and the bypass pipeline system 500 is provided between the water tank 300 and the pipeline system 200, and the fifth valve 18 is additionally provided.
Specifically, the first valve 6, the second valve 15, the third valve 16, the fourth valve 17 and the fifth valve 18 in the embodiment of the present invention may be ball valves, but the actual situation is not limited thereto, and the change of the valve type and number may be changed according to the actual test requirement.
The embodiment of the invention provides a drip irrigation system performance test platform, which comprises: the multifunctional water pressure generating system 100, the pipeline system 200, the water storage tank 300, the filtering module 3, the water and fertilizer integrated module 4, a modularized operation platform (a header platform 10, a measuring platform 19 and a supporting platform 9), a water recovery system 400 and an irrigator 11. The multifunctional water pressure generating system 100 can generate periodic fluctuation water pressure or constant water pressure in different forms, and the multifunctional water pressure generating system 100 extracts water from the water storage tank 300 through the pipeline system 200, and sequentially passes through the filtering module 3 and the water and fertilizer integrated module 4 to enter the irrigator 11. The supporting platform 9, the header platform 10 and the measuring platform 19 are arranged below the irrigator 11, so that the irrigator 11 is ensured to be stable in shape, and the accuracy and the stability of performance detection are improved. The water is recovered by the water recovery system 400, thereby reducing the waste of resources.
Specifically, in practical application, the modularized operation platform (the supporting platform 9, the header platform 10 and the measuring platform 19) and the water recovery system 400 can be arranged in multiple groups according to requirements, so that the degree of freedom of the performance test platform of the drip irrigation system is greatly increased, and different test requirements are met.
The embodiment of the invention provides a water supply method which is applied to a multifunctional water pressure generating system, wherein the multifunctional water pressure generating system comprises a variable-frequency water pump, and as shown in fig. 11, the water supply method specifically comprises the following steps:
Step S101: and acquiring the to-be-tested requirement of the target object and the basic parameters of the variable-frequency water pump.
Step S102: and determining a target water pressure form type based on the to-be-tested requirement.
Specifically, in practical applications, a user selects a sine wave, triangle, rectangle, trapezoid or constant pressure mode through the multifunctional water pressure generating system. In practical application, the water pressure range is determined by the performance of the variable-frequency water pump, and the normal pressure range of the operation of the drip irrigation system is 0-0.30 MPa.
Furthermore, for practical considerations, the drip irrigation system test platform provided by the embodiment of the invention can also be directly applied to the drip irrigation work of an actual drip irrigation system, and for example, in a field drip irrigation system, the water pressure range is usually 0.03-0.30 MPa.
Step S103: and determining a target test parameter based on the target water pressure form type.
Specifically, in practical applications, as shown in fig. 12-15, sine and triangle waves need to be input with a fluctuation period, a highest pressure and a lowest pressure, and the duration setting item does not function at this time; the trapezoid and the rectangle need to input a fluctuation period, duration time, the highest pressure and the lowest pressure, and the duration time is the duration time of the horizontal line in fig. 13 and 14; the constant pressure outputs a pressure value, and other setting items do not play a role at the moment.
Step S104: and generating a target water pressure curve based on the target test parameters and the basic parameters of the variable-frequency water pump.
Referring to fig. 12-15, four types of fluctuating water pressures are taken as examples for explanation, wherein the four types of fluctuating water pressures are respectively sinusoidal water pressure, trapezoidal water pressure, rectangular water pressure and triangular water pressure, and H is max At the maximum water pressure, H min Is the minimum water pressure, H 0 And T is a period for the base water pressure.
Specifically, the setting process of each parameter is as follows:
1. base water pressure= (highest pressure + lowest pressure)/2.
2. The maximum value, the minimum value and the period of the water pressure are respectively determined according to the requirements, namely, different hydraulic performances, water and fertilizer uniformity and anti-blocking performance of drip irrigation pipes/belts of different types can be realized under different parameter combinations, so that the parameter combinations of the maximum value, the minimum value and the period under the optimal hydraulic performances, the water and fertilizer uniformity and the anti-blocking performance are obtained, and the parameter combinations are compared with constant water pressure in real time.
3. For example, the base water pressure may be 0.10MPa, the maximum value is 0.13MPa, the minimum value is 0.07MPa, the period may be set to 60s, and the duration is 30s.
The above data may be set according to specific test requirements, and will not be described herein.
Step S105: and controlling the variable-frequency water pump to supply water to the target object according to the target water pressure curve. The specific implementation process can refer to the related description of the performance test platform of the drip irrigation system, and will not be described herein.
By executing the steps, the water supply method provided by the embodiment of the invention obtains the to-be-tested requirement of the target object and the basic parameters of the variable-frequency water pump; determining a target water pressure form type based on the to-be-tested demand; determining a target test parameter based on the target water pressure morphology type; generating a target water pressure curve based on the target test parameters and the basic parameters of the variable-frequency water pump; and controlling the variable-frequency water pump to supply water to the target object according to the target water pressure curve. Different target water pressure curves are generated according to the to-be-tested requirements, the variable-frequency water pump is controlled to supply water to a target object according to the target water pressure curves, so that not only is the efficient test on the anti-blocking performance of the drip irrigation system and the drip irrigation belt/pipe realized, but also the optimization cost is reduced while the targets of different users for testing the performance of the drip irrigation system are met, and the anti-blocking performance of the drip irrigation system is improved to a certain extent.
Specifically, in an embodiment, the multifunctional water pressure generating system further includes a pressure transmitter, and the water supply method provided by the embodiment of the invention specifically further includes the following steps:
step S201: acquiring an electric signal corresponding to the water pressure at the inlet of the target object in real time based on the pressure transmitter;
step S202: adjusting basic parameters of the variable-frequency water pump based on the electric signals;
step S203: and adjusting the target water pressure curve based on the target test parameters and the adjusted basic parameters of the variable-frequency water pump, and returning to the step S105 to control the variable-frequency water pump to supply water to the target object according to the target water pressure curve.
Specifically, in practical application, the pressure sensing range of the pressure transmitter is 0.001-10 MPa, and the output current is 4-20 mA.
Taking the working frequency of the variable-frequency water pump as 50Hz as an example, the 50Hz output pressure is the corresponding output water pressure (the output pressure of the currently used water pump with the frequency of 50Hz is 6 MPa) when the variable-frequency water pump with the frequency of 50Hz, the working frequency is determined by the water pump parameters, and the pressure measuring range is determined by the pressure transmitter parameters.
The specific details of the water supply method can be correspondingly understood by referring to the corresponding related descriptions and effects in the embodiment of the drip irrigation system performance test platform, and are not repeated here.
According to the embodiment of the invention, the multifunctional water pressure generating system is utilized to generate constant water pressure or fluctuation water pressure in different forms, and water flows sequentially pass through the filtering module, the water and fertilizer integrated module and the pressure transmitter and finally enter the drip irrigation belt/pipe in the modularized operation platform and flow out of the drip irrigation belt/pipe, and the constant water pressure and the fluctuation water pressure can be returned to the water storage tank through the water recovery system, so that the comprehensive performance test of the hydraulic performance and the anti-blocking performance of the constant water pressure and the fluctuation water pressure on the drip irrigation belt/pipe in different categories or in different numbers is finally realized.
It will be appreciated by those skilled in the art that implementing all or part of the above-described methods in the embodiments may be implemented by a computer program for instructing relevant hardware, and the implemented program may be stored in a computer readable storage medium, and the program may include the steps of the embodiments of the above-described methods when executed. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a Flash Memory (Flash Memory), a Hard Disk (HDD), or a Solid State Drive (SSD); the storage medium may also comprise a combination of memories of the kind described above.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (4)

1. A drip irrigation system performance testing platform, comprising: the multifunctional water pressure generating system is connected with an irrigator water inlet end in the drip irrigation system through the pipeline system and is suitable for providing water pressure for testing the performance of the drip irrigation system for the drip irrigation system, wherein,
the multifunctional water pressure generation system comprises a water pressure regulation module and a variable-frequency water pump, wherein the water pressure regulation module comprises a memory and a processor, the memory and the processor are in communication connection, a computer instruction is stored in the memory, and the processor executes the computer instruction so as to acquire the to-be-tested requirement of a target object and the basic parameter of the variable-frequency water pump; determining a target water pressure form type based on the to-be-tested demand; determining a target test parameter based on the target water pressure morphology type; generating a target water pressure curve based on the target test parameters and the basic parameters of the variable-frequency water pump; controlling the variable-frequency water pump to supply water to the target object according to the target water pressure curve;
The outlet end of the variable-frequency water pump is connected with the inlet end of the water and fertilizer integrated module of the drip irrigation system, and is suitable for supplying water to an irrigator of the drip irrigation system according to a target water pressure curve;
the measuring platform is connected with the outlet end of the irrigator of the drip irrigation system, and comprises a measuring device which is suitable for measuring the flow rate of the outlet end of the irrigator so as to detect the performance of the drip irrigation system;
the measuring platform further comprises a measuring layer, wherein the measuring layer comprises a measuring chute and a chute bracket, the measuring chute is arranged on the chute bracket, the measuring chute is suitable for placing a measuring device for measuring the flow of the outlet end of the irrigator, and the measuring chute and the chute bracket are detachably connected and are suitable for testing the comprehensive performance of the irrigator;
the multifunctional water pressure generating system further includes: the pressure of the fluid in the fluid is transmitted to the pressure transmitter,
the input end of the pressure transmitter is connected with the outlet end of the water and fertilizer integrated module of the drip irrigation system, the output end of the pressure transmitter is connected with the water inlet end of the irrigator of the drip irrigation system, and the pressure transmitter is suitable for acquiring the water pressure of the water inlet end of the irrigator and converting the water pressure into an electric signal to be fed back to the water pressure regulating module;
The drip irrigation system performance test platform further comprises: the support platform is respectively arranged at the front end and the tail end of the measuring platform, wherein the support platform comprises a support layer, a base and a support rope,
the supporting layer is suitable for providing support for the irrigator, a sheet-shaped structure which is flush with the top of the supporting layer is arranged in the supporting layer, through holes are formed in the sheet-shaped structure, and the sheet-shaped structure is suitable for providing support for the irrigator by the supporting cable;
the supporting rope is arranged in the sheet-shaped structure in a penetrating way;
the base is suitable for fixing the supporting layer;
the drip irrigation system performance test platform further comprises a header platform, wherein the header platform comprises a header supporting layer and a header measuring layer;
the drip irrigation system performance test platform further comprises: the outlet end of the water storage tank is connected with the inlet end of the variable-frequency water pump;
the drip irrigation system performance test platform further comprises: the water recovery system comprises a backwater chute, a collecting tank and a water suction pump, wherein,
one end of the backwater chute is fixed on a supporting platform base at the tail end of the measuring platform, the other end of the backwater chute is fixed at the front end of the measuring platform and is connected with one end of the collecting tank, and the chute direction is inclined from the supporting platform base to the front end of the measuring platform and is suitable for collecting water flowing out of the drip irrigation system;
The other end of the collecting tank is connected with the inlet end of the water suction pump;
the outlet end of the water suction pump is connected with the inlet end of the water storage tank, and is suitable for collecting the recovered water.
2. The drip irrigation system performance testing platform of claim 1, wherein the processor further performs real-time acquisition of an electrical signal corresponding to water pressure at an inlet of the target object based on the pressure transmitter; adjusting basic parameters of the variable-frequency water pump based on the electric signals; and adjusting the target water pressure curve based on the target test parameters and the adjusted basic parameters of the variable-frequency water pump, and returning to the step of controlling the variable-frequency water pump to supply water to the target object according to the target water pressure curve.
3. The drip irrigation system performance testing platform of claim 1, further comprising: the filtering module is used for filtering the liquid,
one end of the filtering module is connected with the outlet end of the variable-frequency water pump, and the other end of the filtering module is connected with the water and fertilizer integrated module and is suitable for filtering impurities at the outlet end of the variable-frequency water pump.
4. The drip irrigation system performance testing platform of any of claims 1-3, wherein the irrigator is a drip irrigation tube/tape, the irrigator being suspended above the measurement platform by the support platform.
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