CN106954531A - Center pivot sprinkling machine showerhead configurations method and irrigation method - Google Patents

Center pivot sprinkling machine showerhead configurations method and irrigation method Download PDF

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Publication number
CN106954531A
CN106954531A CN201710272320.6A CN201710272320A CN106954531A CN 106954531 A CN106954531 A CN 106954531A CN 201710272320 A CN201710272320 A CN 201710272320A CN 106954531 A CN106954531 A CN 106954531A
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CN
China
Prior art keywords
height
shower nozzle
target
nozzle
irrigation
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CN201710272320.6A
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Chinese (zh)
Inventor
赵伟霞
李久生
栗岩峰
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中国水利水电科学研究院
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Priority to CN201710272320.6A priority Critical patent/CN106954531A/en
Publication of CN106954531A publication Critical patent/CN106954531A/en

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00Watering gardens, fields, sports grounds or the like
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00Watering gardens, fields, sports grounds or the like
    • A01G25/09Watering arrangements making use of movable installations on wheels or the like
    • A01G25/092Watering arrangements making use of movable installations on wheels or the like movable around a pivot centre
    • Y02A40/237

Abstract

The invention discloses a kind of center pivot sprinkling machine showerhead configurations method and irrigation method, belong to irrigation technique field.Wherein, showerhead configurations method includes:Obtain rainfall distribution characteristics of the shower nozzle of different model when using the target canopy height in target crop growth course as setting height(from bottom);The setting height(from bottom) is height of the shower nozzle apart from ground;According to rainfall distribution characteristics of the shower nozzle of each model when using the target canopy height in target crop growth course as setting height(from bottom), the nozzle system for the target canopy height set up suitable for target crop growth course.Irrigated using the nozzle system set up by the collocation method, can effectively ensure that the uniformity of irrigation, while improving the utilization rate of irrigation water.

Description

Center pivot sprinkling machine showerhead configurations method and irrigation method

Technical field

The present invention relates to irrigation technique field, more particularly to a kind of center pivot sprinkling machine showerhead configurations method and irrigation method.

Background technology

Center pivot sprinkling machine is also referred to as center pivot sprinkling machine, has the advantages that high degree of automation, applied widely, in agriculture Industry is widely applied in irrigating.Center pivot sprinkling machine includes being provided with many sag pipes, every on water-main, water-main The lower end of sag pipe is provided with counterweight tube and shower nozzle.When center pivot sprinkling machine is run, water-main rotates around central point, and current lead to Cross water-main and be delivered to each sag pipe, then crop is irrigated by shower nozzle ejection.Due to the running orbit of center pivot sprinkling machine For circle, in order to ensure uniformity that center pivot sprinkling machine irrigates, it is necessary to shower nozzle at reasonable disposition distance center point diverse location Model.

It is mainly to the method that center pivot sprinkling machine shower nozzle is configured at present:According to different model shower nozzle solid apart from ground Determine under height the rainfall distribution characteristics of (such as 1.2 meters), select suitable shower nozzle combination, make apart from center pivot sprinkling machine central point not It is uniformly distributed with the duty at position.

During the present invention is realized, the inventors discovered that at least there is problems with the prior art:By existing Showerhead configurations method can only ensure the irrigation uniformity of center pivot sprinkling machine of the shower nozzle under the level altitude of ground, but in reality During border is irrigated, the highly desirable of shower nozzle highly determines according to crop canopies, so as to cause to use existing showerhead configurations side Irrigation uniformity of the shower nozzle of method configuration in actual irrigation does not reach requirement.

The content of the invention

In order to solve above-mentioned technical problem, the embodiment of the present invention, which provides one kind, makes center pivot sprinkling machine irrigate different canopy layers There can be the center pivot sprinkling machine showerhead configurations method of good irrigation uniformity during height crop.

Specifically, including following technical scheme:

In a first aspect, the embodiment of the present invention provides a kind of center pivot sprinkling machine showerhead configurations method, the collocation method includes:

The shower nozzle of different model is obtained when using the target canopy height in target crop growth course as setting height(from bottom) Rainfall distribution characteristics;The setting height(from bottom) is height of the shower nozzle apart from ground;

According to the shower nozzle of each model when using the target canopy height in target crop growth course as setting height(from bottom) Rainfall distribution characteristics, set up the nozzle system of target canopy height suitable for target crop growth course.

Further, in the collocation method, the shower nozzle of each model of basis is in target crop growth course Target canopy height be used as rainfall distribution characteristics during setting height(from bottom), set up target suitable for target crop growth course After the nozzle system of canopy height, also include:

Choose multiple pre- in altitude range between the minimum canopy height and maximum canopy height of the target crop If height value;

Each shower nozzle is when using each preset height value as setting height(from bottom) in the nozzle system that acquisition is currently set up Rainfall distribution characteristics;

According to rainfall distribution characteristics of each shower nozzle when using each preset height value as setting height(from bottom), simulation meter Irrigation uniformity of the calculation nozzle system currently set up when using each preset height value as setting height(from bottom), and with Default irrigation uniformity is compared;

When irrigation of the nozzle system currently set up when using each preset height value as setting height(from bottom) is equal Evenness is all higher than or during equal to default irrigation uniformity, and the target crop is carried out with the nozzle system currently set up Irrigate.

Further, the target canopy height in the target crop growth course is the maximum canopy of the target crop Highly.

Further, target canopy height of the shower nozzle for obtaining different model in target crop growth course is made Rainfall distribution characteristics during for setting height(from bottom), is specifically included:

The database of the water distribution model of different model shower nozzle is set up, the water distribution model is used to characterize shower nozzle Relation between rainfall distribution characteristics and setting height(from bottom);

Target canopy of the shower nozzle of different model in target crop growth course is obtained described in the database Height is used as rainfall distribution characteristics during setting height(from bottom).

Further, the database of the water distribution model for setting up different model shower nozzle, is specifically included:

Statistics is applied to the agrotype of center pivot sprinkling machine irrigation and the maximum canopy height of every kind of crop;

Precipitation gauge is arranged according to preset rules, with the maximum canopy height of all crops irrigated suitable for center pivot sprinkling machine In calibrated altitude of the maximum as shower nozzle at the top of precipitation gauge, obtain the single spraying head rainfall distribution characteristics of each model shower nozzle Data;

According to water droplet migration model trajectory and single spraying head rainfall distribution characteristics data, the water of different model shower nozzle is obtained Measure distributed model.

Second aspect, the embodiment of the present invention provides a kind of irrigation method of center pivot sprinkling machine, the irrigation method include with Lower step:

The shower nozzle of different model is obtained when using the target canopy height in target crop growth course as setting height(from bottom) Rainfall distribution characteristics;

Choose multiple pre- in altitude range between the minimum canopy height and maximum canopy height of the target crop If height value;

Each shower nozzle is when using each preset height value as setting height(from bottom) in the nozzle system that acquisition is currently set up Rainfall distribution characteristics;

According to rainfall distribution characteristics of each shower nozzle when using each preset height value as setting height(from bottom), simulation meter Irrigation uniformity of the calculation nozzle system currently set up when using each preset height value as setting height(from bottom), and with Default irrigation uniformity is compared;

When irrigation of the nozzle system currently set up when using each preset height value as setting height(from bottom) is equal Evenness is all higher than or during equal to default irrigation uniformity, and the target crop is carried out with the nozzle system currently set up Irrigate;

According to the change of canopy height in the target crop growth course, shower nozzle setting height(from bottom) is adjusted.

Further, the irrigation method is implemented using the adjustable center pivot sprinkling machine of shower nozzle setting height(from bottom).

Further, the adjustable center pivot sprinkling machine of shower nozzle setting height(from bottom) includes:

Water-main, many sag pipes on the water-main, the counterweight installed in the sag pipe lower end Pipe, the shower nozzle installed in the counterweight tube lower end, and for fixing the attachment cap of the sag pipe and the counterweight tube;

The external diameter of the counterweight tube is slightly less than the internal diameter of the sag pipe, and the outer surface of the lower end of the sag pipe is machined with A part on external screw thread, the counterweight tube length direction is located at the inside of the sag pipe, and the attachment cap is set in sagging Outside pipe and the counterweight tube, and the inner surface setting of the attachment cap has the interior spiral shell that the external screw thread with the sag pipe is engaged Line;The circumferencial direction of sag pipe described in the lower end edge of the sag pipe is additionally provided with many bump contacted chips, and many bump contacted chips can The outer surface of the counterweight tube is closely coated in the presence of the attachment cap.

Further, the counterweight tube is connected through a screw thread with the shower nozzle.

The beneficial effect of technical scheme provided in an embodiment of the present invention:

In center pivot sprinkling machine showerhead configurations method provided in an embodiment of the present invention, by obtain the shower nozzle of different model with Target canopy height in target crop growth course is as rainfall distribution characteristics during setting height(from bottom), and according to each model Rainfall distribution characteristics of shower nozzle when using the target canopy height in target crop growth course as setting height(from bottom) is suitable to set up For the nozzle system of the target canopy height in target crop growth course, using the shower nozzle set up by above-mentioned collocation method System is irrigated, and can effectively ensure that the uniformity of irrigation, while improving the utilization rate of irrigation water.

Brief description of the drawings

Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing.

Fig. 1 is a kind of flow chart of center pivot sprinkling machine showerhead configurations method provided in an embodiment of the present invention;

Fig. 2 is the flow chart of another center pivot sprinkling machine showerhead configurations method provided in an embodiment of the present invention;

Fig. 3 is a kind of flow chart of the irrigation method of center pivot sprinkling machine provided in an embodiment of the present invention;

Fig. 4 is the schematic diagram of the connected mode of sag pipe and counterweight tube in center pivot sprinkling machine provided in an embodiment of the present invention.

Reference is represented respectively in figure:

1- sag pipes;

2- counterweight tubes;

3- attachment caps;

4- connection sheets.

Embodiment

To make technical scheme and advantage clearer, below in conjunction with accompanying drawing embodiment of the present invention is made into One step it is described in detail.Unless otherwise defined, all technical terms used by the embodiment of the present invention are respectively provided with and art technology The identical implication that personnel are generally understood that.

Operationally, water-main is rotated center pivot sprinkling machine around central point, and current are delivered to defeated with master by water-main In the connected each sag pipe of water pipe, then the shower nozzle ejection by being connected with each sag pipe, crop is irrigated.Water distribution is special Property be sprinkler performance important indicator, be also irrigate uniformity important factor in order.The shower nozzle of different model is installed different The rainfall distribution characteristics at highly place is different, in center pivot sprinkling machine, to shower nozzle water at rotary middle point diverse location The requirement of distribution character is also differed, therefore, in order to ensure the irrigation uniformity of center pivot sprinkling machine, it is necessary to center pivot sprinkling machine Nozzle system carries out reasonable disposition.According to rainfall distribution characteristics of the shower nozzle of different model under certain setting height(from bottom), Reasonable The model of the shower nozzle at distance center point diverse location is put, the nozzle system of center pivot sprinkling machine is set up.

Based on the above, the embodiments of the invention provide a kind of center pivot sprinkling machine showerhead configurations method and corresponding irrigation Method, and a kind of adjustable center pivot sprinkling machine of shower nozzle setting height(from bottom) is additionally provided, so as to ensure to irrigate uniformity, improve and irrigate Water use efficiency.

Referring to Fig. 1, Fig. 1 shows a kind of center pivot sprinkling machine showerhead configurations method provided in an embodiment of the present invention, the configuration Method comprises the following steps:

Step 101, the shower nozzle for obtaining different model is being used as peace using the target canopy height in target crop growth course Fill rainfall distribution characteristics during height;Setting height(from bottom) is height of the shower nozzle apart from ground.

Step 102, peace is being used as using the target canopy height in target crop growth course according to the shower nozzle of each model Rainfall distribution characteristics during height is filled, the nozzle system for the target canopy height set up suitable for target crop growth course.

In center pivot sprinkling machine showerhead configurations method provided in an embodiment of the present invention, the foundation of nozzle system is according to each type Number rainfall distribution characteristics of shower nozzle when using the target canopy height in target crop growth course as setting height(from bottom), citing For, it is when needing to irrigate canopy height for 2 meters of crop, then high in 2 meters of installation according to the shower nozzle of each model Rainfall distribution characteristics when spending, to determine the model of the shower nozzle at center pivot sprinkling machine rotary middle point diverse location, so that Set up corresponding nozzle system.Irrigated using the nozzle system thus set up, on the one hand ensure that the uniformity of irrigation, Shower nozzle can on the other hand be located just at the top of crop canopies, the evaporation of current is reduced, irrigation water using efficiency is improved.

Above-mentioned target canopy height can be arbitrary canopy height value in target crop growth course, in present invention implementation Example it is a kind of more preferred embodiment in, the target canopy height in target crop growth course is target crop growth course The middle maximum canopy height that can be reached.

In step 102, set up for the rainfall distribution characteristics of the shower nozzle according to each model suitable for target crop growth During target canopy height nozzle system specific method, the embodiment of the present invention is not particularly limited, using existing Center pivot sprinkling machine nozzle system collocation method, for example, can carry out showerhead configurations by showerhead configurations software.

Referring to Fig. 2, Fig. 2 shows another center pivot sprinkling machine showerhead configurations method provided in an embodiment of the present invention, and this is matched somebody with somebody The method of putting is a kind of shower nozzle Optimal Configuration Method based on single spraying head water droplet transport model, the shower nozzle obtained by the collocation method The irrigation uniformity of system is insensitive to the setting height(from bottom) of shower nozzle, you can real according to crop change of height in process of crop growth When adjust shower nozzle setting height(from bottom), on the one hand prevented when crop plant height increase crop canopies to sprinkling water droplet block act on and it is right The injury of shower nozzle, Influence of Evaporation of the wind to sprinkling water droplet is on the other hand reduced when crop plant height is smaller, crop is effectively ensured not With the irrigation uniformity of growth period, and improve irrigation water using efficiency.

Specifically, the collocation method comprises the following steps:

Step 201, the database of the water distribution model of different model shower nozzle is set up, water distribution model, which is used to characterize, to be sprayed Relation between the rainfall distribution characteristics and setting height(from bottom) of head, setting height(from bottom) is height of the shower nozzle apart from ground.

Wherein, the database of the water distribution model of different model shower nozzle can specifically be set up by following steps:

Step 2011, statistics is applied to the agrotype of center pivot sprinkling machine irrigation and the maximum canopy height of every kind of crop.

The applicable irrigation sprinkler type of Different Crop is different, only right in collocation method provided in an embodiment of the present invention Maximum canopy height the process of crop growth irrigated suitable for center pivot sprinkling machine is counted.

Step 2012, precipitation gauge is arranged according to preset rules, with all crops irrigated suitable for center pivot sprinkling machine most Calibrated altitude of the maximum as shower nozzle at the top of precipitation gauge in big canopy height, obtains the single spraying head water of each model shower nozzle Measure distribution character data, including spray radius, shooting angle and exit velocities etc..

In this step, according to default arrangement precipitation gauge, obtained respectively according to the amount of the water received in each precipitation gauge Take the respective single spraying head rainfall distribution characteristics data of each model.

Can be according to National Standard of the People's Republic of China GB/T 27612.3-2011《The 3rd, agricultural irrigation equipment shower nozzle Divide rainfall distribution characteristics and test method》In pertinent regulations arrangement precipitation gauge and obtain each model shower nozzle single spraying head water Measure distribution character data.

Step 2013, according to water droplet migration model trajectory and single spraying head rainfall distribution characteristics data, different model spray is obtained The water distribution model of head.

Water droplet migration model trajectory is the fundamental equation for setting up water droplet three-dimensional motion model, special with reference to single droplet distribution Property the ambient parameter such as data, water droplet evaporation model, initial drop diameter, water physical parameter and humiture, calculated available for simulation Drop particle diameter distribution situation in the range of shower nozzle spray radius, with reference to the corresponding water of different-grain diameter water droplet, you can obtain single spraying Distribution of the head water on ground.

Based on water droplet migration model trajectory, each model shower nozzle respective water distribution in different setting height(from bottom)s can obtain Characteristic, so as to set up the water distribution database of different model shower nozzle.Shower nozzle is obtained for migrating model trajectory by water droplet In the detailed process of the rainfall distribution characteristics of different setting height(from bottom)s, it may refer to《Sprinkling machine principle design application》(make Person:Xu Yifei, Xu Ping Hua, Agriculture Machine in China publishing house publish) record of Section seven of chapter 2.

It will be appreciated by persons skilled in the art that being required for when being not the showerhead configurations of each progress center pivot sprinkling machine Set up above-mentioned database.Only database need to be set up when first time carrying out showerhead configurations, number is directly transferred from database afterwards According to.

Step 202, target canopy of the shower nozzle of different model in target crop growth course is obtained from database Height is used as rainfall distribution characteristics during setting height(from bottom).

Step 203, peace is being used as using the target canopy height in target crop growth course according to the shower nozzle of each model Rainfall distribution characteristics during height is filled, the nozzle system for the target canopy height set up suitable for target crop growth course.

It will be appreciated by persons skilled in the art that the target canopy height the above-mentioned growth course suitable for target crop Nozzle system refer to using the nozzle system duty at center pivot sprinkling machine central point diverse location can be made equal Even distribution.

The mesh suitable for target crop growth course is set up for the rainfall distribution characteristics of the shower nozzle according to each model The specific method of the nozzle system of canopy height is marked, the embodiment of the present invention is not particularly limited, using existing center pivot sprinkling machine Nozzle system collocation method, for example, can carry out showerhead configurations by showerhead configurations software.

In order to adjust shower nozzle setting height(from bottom) in real time without influence according to crop change of height in process of crop growth The irrigation uniformity of nozzle system, after nozzle system foundation, to the irrigation uniformity of nozzle system currently set up to shower nozzle The sensitiveness of setting height(from bottom) is analyzed.Comprise the following steps that:

Step 204, choose multiple in the altitude range between the minimum canopy height of target crop and maximum canopy height Preset height value.

Above-mentioned minimum canopy height refers to the minimum canopy height in target crop growth course, and the minimum canopy height can To be 0.The gradient embodiment of the present invention between multiple preset height values is not particularly limited, and those skilled in the art can basis Actual conditions are selected, for example, each preset height is determined according to the canopy height of the different phase of the growth of target crop The concrete numerical value of value.

Step 205, obtain each shower nozzle in the nozzle system currently set up and installation height is being used as using each preset height value Rainfall distribution characteristics when spending.

Rainfall distribution characteristics of above-mentioned each shower nozzle when using each preset height value as setting height(from bottom) is from step 201 Obtained in the database of the water distribution model of the different model shower nozzle of foundation.

Step 206, the rainfall distribution characteristics according to each shower nozzle when using each preset height value as setting height(from bottom), mould Intend calculating irrigation uniformity of the nozzle system currently set up when using each preset height value as setting height(from bottom), and with presetting Irrigation uniformity is compared.When irrigation of the nozzle system currently set up when using each preset height value as setting height(from bottom) The uniformity is all higher than or during equal to default irrigation uniformity, and target crop is irrigated with the nozzle system currently set up.

Above-mentioned irrigation uniformity refers in spraying range that the uniformity coefficient of water distribution uses Christiansen coefficient of uniformity Represent (being represented in the form of percentage).

If it will be appreciated by persons skilled in the art that the nozzle system currently set up with step 205 determine it is every Individual preset height value is all higher than as irrigation uniformity during setting height(from bottom) or during equal to default irrigation uniformity, illustrates current The irrigation uniformity of the nozzle system of foundation is insensitive to shower nozzle setting height(from bottom), namely with the nozzle system currently set up to target When crop is irrigated, the setting height(from bottom) of shower nozzle can be adjusted according to the canopy height of crop, shower nozzle is located at all the time and makees At the top of thing canopy.

If as shown in Fig. 2 at least one height value of the nozzle system currently set up in each preset height value Be less than default irrigation uniformity as irrigation uniformity during setting height(from bottom), namely the nozzle system currently set up some or The irrigation uniformity of some setting height(from bottom)s does not reach requirement, then according to the method for step 203, and not reached with the irrigation uniformity will The height value asked re-establishes nozzle system as the setting height(from bottom) of shower nozzle, for example, can be sprayed by changing shower nozzle model, adjustment The modes such as outspoken footpath re-establish nozzle system.It is possible to further newly-established according to the method for step 206, then counterweight The irrigation uniformity of nozzle system is analyzed the sensitivity of setting height(from bottom), and irrigation uniformity is obtained to shower nozzle until setting up The insensitive nozzle system of setting height(from bottom).

The concrete numerical value embodiment of the present invention of above-mentioned default irrigation uniformity numerical value is not particularly limited, people in the art Member can be set according to actual conditions, can be according to relevant standard setting (GB/T50085-2007, Sprinkler Irrigation Project technology rule Model), for example can be 85%.

The irrigation uniformity of the nozzle system currently set up when using each preset height value as setting height(from bottom) is carried out The method embodiment of the present invention that simulation is calculated is not particularly limited, this area conventional method, for example can be using related soft Part, which is simulated, to be calculated.

In collocation method provided in an embodiment of the present invention, the target canopy height in target crop growth course is preferably The maximum canopy height of target crop.Based on this, above-mentioned steps 202 are specifically as follows the spray that different model is obtained from database Rainfall distribution characteristics of head when using the maximum canopy height of target crop as setting height(from bottom).Above-mentioned steps 203, specifically can be with For rainfall distribution characteristics of the shower nozzle according to each model when using the maximum canopy height of target crop as setting height(from bottom), build The nozzle system of the vertical target canopy height suitable for target crop growth course.

Referring to Fig. 3, Fig. 3 shows a kind of flow signal of the irrigation method of center pivot sprinkling machine provided in an embodiment of the present invention Figure, the irrigation method is realized based on above-mentioned showerhead configurations method, is initially set up an irrigation uniformity and is installed high with shower nozzle The insensitive nozzle system of degree change, recycles the nozzle system to irrigate target crop, during irrigation, according to mesh The change for being denoted as thing canopy height adjusts shower nozzle setting height(from bottom) in real time.

Specifically include following steps:

Step 301, the shower nozzle for obtaining different model is being used as peace using the target canopy height in target crop growth course Fill rainfall distribution characteristics during height.

Step 302, choose many in the altitude range between the minimum canopy height and maximum canopy height of target crop Individual preset height value.

Step 303, obtain each shower nozzle in the nozzle system currently set up and installation height is being used as using each preset height value Rainfall distribution characteristics when spending.

Step 304, the rainfall distribution characteristics according to each shower nozzle when using each preset height value as setting height(from bottom), mould Intend calculating irrigation uniformity of the nozzle system currently set up when using each preset height value as setting height(from bottom), and with presetting Irrigation uniformity is compared.

Step 305, the irrigation when the nozzle system currently set up when using each preset height value as setting height(from bottom) is equal Evenness is all higher than or during equal to default irrigation uniformity, and target crop is irrigated with the nozzle system currently set up.

Step 306, according to the change of canopy height in target crop growth course, shower nozzle setting height(from bottom) is adjusted.

For the specific implementation of 301~step 305 of above-mentioned steps, with reference to saying to step 201~step 206 above It is bright, it will not be repeated here.

Further, realized using the adjustable center pivot sprinkling machine of shower nozzle setting height(from bottom) real in target crop growth course When adjust shower nozzle setting height(from bottom).

As shown in figure 4, the embodiment of the present invention it is a kind of more preferred embodiment in, above-mentioned shower nozzle setting height(from bottom) is adjustable Center pivot sprinkling machine include:Water-main (not shown), many sag pipes 1 on water-main, is arranged on down The counterweight tube 2 of the lower end of nanubrium 1, the shower nozzle (not shown) installed in counterweight tube lower end, and for fixing sag pipe and matching somebody with somebody The attachment cap 3 of pipe again.Wherein, the external diameter of counterweight tube 2 is slightly less than the internal diameter of sag pipe 1, the outer surface processing of the lower end of sag pipe 1 There is the part on external screw thread, the length direction of counterweight tube 2 to be located inside sag pipe 1, attachment cap 3 is set in sag pipe 1 and counterweight Outside pipe 2, and the inner surface setting of attachment cap 3 has the internal thread that the external screw thread with sag pipe 1 is engaged;The lower end of sag pipe 1 Many bump contacted chips 4 are additionally provided with along the circumferencial direction of sag pipe 1, many bump contacted chips 4 can closely be coated in the presence of attachment cap 3 In the outer surface of counterweight tube 2.Counterweight tube 2 is also connected through a screw thread with shower nozzle.

When needing to be adjusted shower nozzle setting height(from bottom), attachment cap 3 is unscrewed, afterwards outwards by counterweight tube 2 from sagging Certain length is pulled out in pipe 1, or by push-in certain distance in the downward nanubrium 1 of counterweight tube 2, so as to drive what is be connected with counterweight 1 Carry or transfer on shower nozzle, realize the regulation to shower nozzle setting height(from bottom).After shower nozzle is adjusted to suitable setting height(from bottom), then revolve Tight attachment cap, makes the connection sheet of the lower end of sag pipe 1 closely be coated on the outer surface of counterweight tube 2, counterweight tube 2 is fixed with sag pipe 1.

In order to further improve the intensity that sag pipe 1 is connected with counterweight tube 2, it can be also provided with the outer surface of counterweight tube 2 External screw thread, and by the form that the indoor design of attachment cap 3 is shoulder hole, the upper end of shoulder hole is set and the outer surface of sag pipe 1 The internal thread that external screw thread is engaged, the lower end of shoulder hole sets the internal thread being engaged with the external screw thread of the outer surface of counterweight tube 2, I.e. the upper and lower ends of attachment cap 3 are connected through a screw thread with sag pipe 1 and counterweight tube 2 respectively.

It should be noted that at present in existing center pivot sprinkling machine, counterweight tube is integrally fixed at the outside of sag pipe, only It is to play counterweight, sag pipe is kept vertical effect, and in circular sprinkling irrigation provided in an embodiment of the present invention, by counterweight length of tube The part in direction is arranged on inside sag pipe, i.e. counterweight tube uses built-in form, and setting by attachment cap and right The simple modifications of sag pipe lower end structure, on the premise of counterweight tube weight balance function is retained, realize adjustment shower nozzle setting height(from bottom) Function.Also, center pivot sprinkling machine provided in an embodiment of the present invention only need to do simple modifications on the basis of existing center pivot sprinkling machine , cost is relatively low.

In the embodiment of the present invention, spy is not made for connected mode of the installation of water-main, sag pipe and water-main etc. It is different to limit, this area conventional technical means.

In the embodiment of the present invention, the adjustment to shower nozzle setting height(from bottom) can be also realized using other modes.

To sum up, insensitive circular jetting is changed with shower nozzle setting height(from bottom) the embodiments of the invention provide a kind of irrigation uniformity Filling machine showerhead configurations method, and the irrigation method based on the collocation method, while additionally providing a kind of for realizing above-mentioned filling The adjustable center pivot sprinkling machine of shower nozzle setting height(from bottom) of method is irrigate, it is real according to crop canopies height change in process of crop growth When adjust shower nozzle setting height(from bottom), shower nozzle is always positioned at the top of crop canopies, crop canopies pair prevented when crop plant height increases The effect of blocking and the injury to shower nozzle of sprinkling water droplet, Influence of Evaporation of the wind to sprinkling water droplet is reduced when crop plant height is smaller, The irrigation uniformity of crop different growing stage is effectively ensured, irrigation water using efficiency is improved.Also, it is provided in an embodiment of the present invention The adjustable center pivot sprinkling machine of shower nozzle setting height(from bottom) is simple in construction, it is only necessary to do simple modifications to existing center pivot sprinkling machine, into This is relatively low.

The above is for only for ease of it will be understood by those skilled in the art that technical scheme, not to limit The present invention.Within the spirit and principles of the invention, any modifications, equivalent substitutions and improvements made etc., should be included in this Within the protection domain of invention.

Claims (9)

1. a kind of center pivot sprinkling machine showerhead configurations method, its characteristic is that the collocation method includes:
Obtain water of the shower nozzle of different model when using the target canopy height in target crop growth course as setting height(from bottom) Measure distribution character;The setting height(from bottom) is height of the shower nozzle apart from ground;
According to water of the shower nozzle of each model when using the target canopy height in target crop growth course as setting height(from bottom) Distribution character is measured, the nozzle system for the target canopy height set up suitable for target crop growth course.
2. collocation method according to claim 1, its characteristic is, in the collocation method, each model of basis Rainfall distribution characteristics of shower nozzle when using the target canopy height in target crop growth course as setting height(from bottom), set up suitable After nozzle system for the target canopy height in target crop growth course, also include:
Multiple default height are chosen in altitude range between the minimum canopy height and maximum canopy height of the target crop Angle value;
Obtain each water of shower nozzle when using each preset height value as setting height(from bottom) in the nozzle system currently set up Measure distribution character;
According to rainfall distribution characteristics of each shower nozzle when using each preset height value as setting height(from bottom), simulation calculates institute Irrigation uniformity of the nozzle system currently set up when using each preset height value as setting height(from bottom) is stated, and with presetting Irrigation uniformity is compared;
When irrigation uniformity of the nozzle system currently set up when using each preset height value as setting height(from bottom) It is all higher than or during equal to default irrigation uniformity, the target crop is filled with the nozzle system currently set up Irrigate.
3. collocation method according to claim 2, its characteristic is, the target canopy in the target crop growth course Highly it is the maximum canopy height of the target crop.
4. collocation method according to claim 1, its characteristic is that the shower nozzle for obtaining different model is made with target Target canopy height in thing growth course is specifically included as rainfall distribution characteristics during setting height(from bottom):
The database of the water distribution model of different model shower nozzle is set up, the water distribution model is used for the water for characterizing shower nozzle Relation between distribution character and setting height(from bottom);
Target canopy height of the shower nozzle of different model in target crop growth course is obtained described in the database It is used as rainfall distribution characteristics during setting height(from bottom).
5. collocation method according to claim 4, its characteristic is, the water distribution mould for setting up different model shower nozzle The database of type, is specifically included:
Statistics is applied to the agrotype of center pivot sprinkling machine irrigation and the maximum canopy height of every kind of crop;
Precipitation gauge is arranged according to preset rules, with the maximum canopy height of all crops irrigated suitable for center pivot sprinkling machine Calibrated altitude of the maximum as shower nozzle at the top of precipitation gauge, obtains the single spraying head rainfall distribution characteristics number of each model shower nozzle According to;
According to water droplet migration model trajectory and single spraying head rainfall distribution characteristics data, the water point of different model shower nozzle is obtained Cloth model.
6. a kind of irrigation method of center pivot sprinkling machine, its characteristic is that the irrigation method comprises the following steps:
Obtain water of the shower nozzle of different model when using the target canopy height in target crop growth course as setting height(from bottom) Measure distribution character;
Multiple default height are chosen in altitude range between the minimum canopy height and maximum canopy height of the target crop Angle value;
Obtain each water of shower nozzle when using each preset height value as setting height(from bottom) in the nozzle system currently set up Measure distribution character;
According to rainfall distribution characteristics of each shower nozzle when using each preset height value as setting height(from bottom), simulation calculates institute Irrigation uniformity of the nozzle system currently set up when using each preset height value as setting height(from bottom) is stated, and with presetting Irrigation uniformity is compared;
When irrigation uniformity of the nozzle system currently set up when using each preset height value as setting height(from bottom) It is all higher than or during equal to default irrigation uniformity, the target crop is filled with the nozzle system currently set up Irrigate;
According to the change of canopy height in the target crop growth course, shower nozzle setting height(from bottom) is adjusted.
7. irrigation method according to claim 6, it is characterised in that the irrigation method is adjustable using shower nozzle setting height(from bottom) Center pivot sprinkling machine implement.
8. irrigation method according to claim 7, it is characterised in that the adjustable center pivot sprinkling machine of shower nozzle setting height(from bottom) Including:
Water-main, many sag pipes on the water-main, the counterweight tube installed in the sag pipe lower end, peace Shower nozzle mounted in the counterweight tube lower end, and for fixing the attachment cap of the sag pipe and the counterweight tube;
The external diameter of the counterweight tube is slightly less than the internal diameter of the sag pipe, and the outer surface of the lower end of the sag pipe is machined with outer spiral shell A part on line, the counterweight tube length direction is located at the inside of the sag pipe, the attachment cap be set in sag pipe and Outside the counterweight tube, and the inner surface setting of the attachment cap has the internal thread that the external screw thread with the sag pipe is engaged; The circumferencial direction of sag pipe described in the lower end edge of the sag pipe is additionally provided with many bump contacted chips, and many bump contacted chips can be in institute State the outer surface that the counterweight tube is closely coated in the presence of attachment cap.
9. irrigation method according to claim 8, it is characterised in that the counterweight tube is connected with the shower nozzle by screw thread Connect.
CN201710272320.6A 2017-04-24 2017-04-24 Center pivot sprinkling machine showerhead configurations method and irrigation method CN106954531A (en)

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CN109328998A (en) * 2018-11-07 2019-02-15 上海交通大学 Center pivot sprinkling machine spray nozzle configuration method based on the sprinkling irrigation of pulsewidth modulation variable

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CN105794605A (en) * 2016-05-30 2016-07-27 重庆云晖科技有限公司 Intelligent water-saving irrigation method and intelligent water-saving irrigation system

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CN103069997A (en) * 2013-01-30 2013-05-01 中国科学院遗传与发育生物学研究所 Water-saving irrigation method applicable to close-planting crop
CN204620300U (en) * 2015-05-11 2015-09-09 中国灌溉排水发展中心 A kind of telescopic water injector for giant sprinkler
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