CN118120592A - Salty and fresh water mixing irrigation system and method - Google Patents
Salty and fresh water mixing irrigation system and method Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
- A01G25/023—Dispensing fittings for drip irrigation, e.g. drippers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/20—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising
- B05B15/25—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising using moving elements, e.g. rotating blades
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Abstract
Description
技术领域Technical Field
本申请涉及农业灌溉技术领域，特别涉及一种咸淡水掺混灌溉系统及方法。The present application relates to the technical field of agricultural irrigation, and in particular to a salt-fresh water mixing irrigation system and method.
背景技术Background technique
我国水资源总量大但人均占有量不足，且水资源在东南-西北方向上呈现时空分布极度不均的状态，各行各业都存在出用水紧张的问题，这其中，农业用水资源不足尤为严峻。在一些土地盐碱化地区，在冬春季节常采用高定额灌溉洗盐的方式，因此会产生大量咸水。由于这些地区水资源极度短缺，因此对咸水的资源化利用正在兴起，旨在充分利用部分作物的耐盐特性，通过咸水和淡水的综合利用缓解农业水资源日趋紧张的现状。my country has a large total amount of water resources, but the per capita possession is insufficient, and the water resources are extremely unevenly distributed in time and space in the southeast-northwest direction. All walks of life have water shortage problems, among which the shortage of agricultural water resources is particularly severe. In some areas with salinized land, high-quota irrigation and salt washing methods are often used in winter and spring, which will produce a large amount of salt water. Due to the extreme shortage of water resources in these areas, the resource utilization of salt water is on the rise, aiming to make full use of the salt tolerance of some crops and alleviate the increasingly tense situation of agricultural water resources through the comprehensive utilization of salt water and fresh water.
现有技术提供了多种对于不同浓度的物质进行调配，进而进行农业应用的技术，例如CN111217639A提出了一种多元素定性定量配肥装置及方法，将回液、清水和肥料混合后重新用于农作物的生长。然而，上述专利用于施肥，和灌溉不同的是，施肥是间断进行的，因此不要求液体连续供应，但是灌溉则是一个连续的过程，要求在灌溉过程中液体能够持续供应，因此现有的用于施肥的技术并不能应用于对农作物的灌溉中。The prior art provides a variety of technologies for preparing substances of different concentrations for agricultural applications. For example, CN111217639A proposes a multi-element qualitative and quantitative fertilizer preparation device and method, which mixes return liquid, clean water and fertilizer and reuses them for the growth of crops. However, the above patent is used for fertilization, which is different from irrigation in that fertilization is intermittent and does not require continuous supply of liquid, but irrigation is a continuous process that requires continuous supply of liquid during the irrigation process. Therefore, the existing technology for fertilization cannot be applied to the irrigation of crops.
发明内容Summary of the invention
本申请实施例提供了一种咸淡水掺混灌溉系统及方法，用以解决现有技术中无法实现多种液体混合时的连续灌溉问题。The embodiments of the present application provide a salt-fresh water mixing irrigation system and method to solve the problem of continuous irrigation when multiple liquids cannot be mixed in the prior art.
一方面，本申请实施例提供了一种咸淡水掺混灌溉系统，包括：On the one hand, an embodiment of the present application provides a salt-fresh water mixing irrigation system, comprising:
咸水储水设施，用于存储咸水，咸水储水设施中设置有水质监测设施，该水质监测设施用于检测咸水的盐分浓度以及对作物生长有害的关键离子浓度；A salt water storage facility for storing salt water, wherein a water quality monitoring facility is provided in the salt water storage facility, and the water quality monitoring facility is used to detect the salt concentration of the salt water and the concentration of key ions harmful to crop growth;
淡水储水设施，用于存储淡水，淡水储水设施中也设置有水质监测设施，该水质监测设施用于检测淡水水质；Fresh water storage facilities are used to store fresh water. Water quality monitoring facilities are also provided in the fresh water storage facilities. The water quality monitoring facilities are used to detect the quality of fresh water;
咸淡水掺混装置，分别通过咸水进水管和淡水进水管与咸水储水设施和淡水储水设施连接，咸淡水掺混装置用于对输入的咸水和淡水进行搅拌，形成混合水，咸水进水管上设置有咸水流量计和咸水变频泵，淡水进水管上设置有淡水流量计和淡水变频泵，咸水流量计和淡水流量计分别用于检测流过的咸水流量和淡水流量，咸水变频泵和淡水变频泵则分别用于控制咸水流量和淡水流量；A salt-fresh water mixing device is connected to the salt water storage facility and the fresh water storage facility through a salt water inlet pipe and a fresh water inlet pipe, respectively. The salt-fresh water mixing device is used to mix the input salt water and fresh water to form mixed water. A salt water flow meter and a salt water variable frequency pump are provided on the salt water inlet pipe, and a fresh water flow meter and a fresh water variable frequency pump are provided on the fresh water inlet pipe. The salt water flow meter and the fresh water flow meter are used to detect the flow of salt water and the flow of fresh water respectively. The salt water variable frequency pump and the fresh water variable frequency pump are used to control the flow of salt water and the flow of fresh water respectively.
农田滴灌设施，通过混合水出水管与咸淡水掺混装置连接，农田滴灌设施用于利用混合水进行灌溉，混合水出水管上设置有混合水流量计，该混合水流量计用于检测混合水流量；The farmland drip irrigation facility is connected to the salt-fresh water mixing device through a mixed water outlet pipe. The farmland drip irrigation facility is used to irrigate with mixed water. A mixed water flow meter is provided on the mixed water outlet pipe. The mixed water flow meter is used to detect the mixed water flow rate.
掺混控制装置，用于获取咸水的盐分浓度、关键离子浓度以及淡水水质，根据咸水的盐分浓度、关键离子浓度、淡水水质以及设定的灌溉水适宜水质标准确定咸水流量和淡水流量的比例，最终通过咸水变频泵和淡水变频泵控制咸水和淡水按照比例输送至咸淡水掺混装置中，同时，掺混控制装置还根据咸水流量、淡水流量和混合水流量对咸水变频泵和淡水变频泵进行控制，使咸水流量、淡水流量之和与混合水流量相同。The mixing control device is used to obtain the salt concentration, key ion concentration and fresh water quality of the salt water, determine the ratio of the salt water flow rate to the fresh water flow rate according to the salt water concentration, key ion concentration, fresh water quality and the set suitable water quality standard for irrigation water, and finally control the salt water and fresh water to be transported to the salt-fresh water mixing device in proportion through the salt water variable frequency pump and the fresh water variable frequency pump. At the same time, the mixing control device also controls the salt water variable frequency pump and the fresh water variable frequency pump according to the salt water flow rate, the fresh water flow rate and the mixed water flow rate, so that the sum of the salt water flow rate and the fresh water flow rate is the same as the mixed water flow rate.
另一方面，本申请实施例还提供了一种咸淡水掺混灌溉方法，包括：On the other hand, the embodiment of the present application also provides a salt-fresh water mixing irrigation method, comprising:
检测咸水的盐分浓度以及对作物生长有害的关键离子浓度、咸水流量、淡水水质和淡水流量；Detect salt concentration of salt water and concentration of key ions harmful to crop growth, salt water flow, fresh water quality and fresh water flow;
根据咸水的盐分浓度、关键离子浓度、淡水水质以及设定的灌溉水适宜水质标准确定咸水流量和淡水流量的比例，通过咸水变频泵和淡水变频泵控制咸水和淡水按照比例输送至咸淡水掺混装置中；The ratio of salt water flow rate to fresh water flow rate is determined according to the salt water salinity, key ion concentration, fresh water quality and the set irrigation water suitable water quality standard, and the salt water and fresh water are transported to the salt-fresh water mixing device in proportion through the salt water variable frequency pump and the fresh water variable frequency pump;
对输入的咸水和淡水进行搅拌，形成混合水；The input salt water and fresh water are stirred to form mixed water;
检测混合水流量；Detect mixed water flow;
根据咸水流量、淡水流量和混合水流量对咸水变频泵和淡水变频泵进行控制，使咸水流量、淡水流量之和与混合水流量相同；The salt water variable frequency pump and the fresh water variable frequency pump are controlled according to the salt water flow, fresh water flow and mixed water flow, so that the sum of the salt water flow and the fresh water flow is the same as the mixed water flow;
利用混合水进行灌溉。Use mixed water for irrigation.
本申请中的一种咸淡水掺混灌溉系统及方法，具有以下优点：The salt-fresh water mixing irrigation system and method in the present application has the following advantages:
在将咸水和淡水搅拌均匀的同时，也确保始终有水输出，且输入的水和输出的水流量相同，使灌溉能够长时间且稳定连续的进行。While mixing salt water and fresh water evenly, it also ensures that there is always water output, and the flow rate of input water and output water is the same, so that irrigation can be carried out for a long time in a stable and continuous manner.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
图1为本申请实施例提供的一种咸淡水掺混灌溉系统的功能模块图；FIG1 is a functional module diagram of a salt-fresh water mixing irrigation system provided in an embodiment of the present application;
图2为本申请实施例提供的一种咸淡水掺混灌溉系统的结构示意图。FIG2 is a schematic diagram of the structure of a salt-fresh water mixing irrigation system provided in an embodiment of the present application.
具体实施方式Detailed ways
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
图1-2为本申请实施例提供的一种咸淡水掺混灌溉系统的组成示意图。本申请实施例提供了一种咸淡水掺混灌溉系统，包括：Figures 1-2 are schematic diagrams of the components of a salt-fresh water mixing irrigation system provided in an embodiment of the present application. The present application provides a salt-fresh water mixing irrigation system, comprising:
咸水储水设施，用于存储咸水，咸水储水设施中设置有水质监测设施，该水质监测设施用于检测咸水的盐分浓度以及对作物生长有害的关键离子浓度；A salt water storage facility for storing salt water, wherein a water quality monitoring facility is provided in the salt water storage facility, and the water quality monitoring facility is used to detect the salt concentration of the salt water and the concentration of key ions harmful to crop growth;
淡水储水设施，用于存储淡水，淡水储水设施中也设置有水质监测设施，该水质监测设施用于检测淡水水质；Fresh water storage facilities are used to store fresh water. Water quality monitoring facilities are also provided in the fresh water storage facilities. The water quality monitoring facilities are used to detect the quality of fresh water;
咸淡水掺混装置，分别通过咸水进水管和淡水进水管与咸水储水设施和淡水储水设施连接，咸淡水掺混装置用于对输入的咸水和淡水进行搅拌，形成混合水，咸水进水管上设置有咸水流量计和咸水变频泵，淡水进水管上设置有淡水流量计和淡水变频泵，咸水流量计和淡水流量计分别用于检测流过的咸水流量和淡水流量，咸水变频泵和淡水变频泵则分别用于控制咸水流量和淡水流量；A salt-fresh water mixing device is connected to the salt water storage facility and the fresh water storage facility through a salt water inlet pipe and a fresh water inlet pipe, respectively. The salt-fresh water mixing device is used to mix the input salt water and fresh water to form mixed water. A salt water flow meter and a salt water variable frequency pump are provided on the salt water inlet pipe, and a fresh water flow meter and a fresh water variable frequency pump are provided on the fresh water inlet pipe. The salt water flow meter and the fresh water flow meter are used to detect the flow of salt water and the flow of fresh water respectively. The salt water variable frequency pump and the fresh water variable frequency pump are used to control the flow of salt water and the flow of fresh water respectively.
农田滴灌设施，通过混合水出水管与咸淡水掺混装置连接，农田滴灌设施用于利用混合水进行灌溉，混合水出水管上设置有混合水流量计，该混合水流量计用于检测混合水流量；The farmland drip irrigation facility is connected to the salt-fresh water mixing device through a mixed water outlet pipe. The farmland drip irrigation facility is used to irrigate with mixed water. A mixed water flow meter is provided on the mixed water outlet pipe. The mixed water flow meter is used to detect the mixed water flow rate.
掺混控制装置，用于获取咸水的盐分浓度、关键离子浓度以及淡水水质，根据咸水的盐分浓度、关键离子浓度、淡水水质以及设定的灌溉水适宜水质标准确定咸水流量和淡水流量的比例，最终通过咸水变频泵和淡水变频泵控制咸水和淡水按照比例输送至咸淡水掺混装置中，同时，掺混控制装置还根据咸水流量、淡水流量和混合水流量对咸水变频泵和淡水变频泵进行控制，使咸水流量、淡水流量之和与混合水流量相同。The mixing control device is used to obtain the salt concentration, key ion concentration and fresh water quality of the salt water, determine the ratio of the salt water flow rate to the fresh water flow rate according to the salt water concentration, key ion concentration, fresh water quality and the set suitable water quality standard for irrigation water, and finally control the salt water and fresh water to be transported to the salt-fresh water mixing device in proportion through the salt water variable frequency pump and the fresh water variable frequency pump. At the same time, the mixing control device also controls the salt water variable frequency pump and the fresh water variable frequency pump according to the salt water flow rate, the fresh water flow rate and the mixed water flow rate, so that the sum of the salt water flow rate and the fresh water flow rate is the same as the mixed water flow rate.
示例性地，咸水储水设施可以采用咸水井、咸水储水罐等设备，相应地，淡水储水设施可以采用淡水井、淡水储水罐等设备。Illustratively, salt water storage facilities may employ salt water wells, salt water storage tanks and other equipment, and correspondingly, fresh water storage facilities may employ fresh water wells, fresh water storage tanks and other equipment.
咸淡水掺混装置包括搅拌罐、搅拌电机和搅拌器，搅拌电机的主体安装在搅拌罐的外顶部，搅拌电机的转轴向下延伸并插入搅拌罐内部，搅拌器则安装在搅拌电机的转轴末端，当咸水和淡水输送至搅拌罐后，搅拌单机通电工作以带动搅拌器转动，进而将咸水和淡水在短时间内搅拌均匀，形成混合水。The salt-fresh water mixing device includes a stirring tank, a stirring motor and an agitator. The main body of the stirring motor is installed on the outer top of the stirring tank, the rotating shaft of the stirring motor extends downward and is inserted into the stirring tank, and the agitator is installed at the end of the rotating shaft of the stirring motor. After the salt water and fresh water are transported to the stirring tank, the stirring unit is powered on to drive the agitator to rotate, thereby stirring the salt water and fresh water evenly in a short time to form mixed water.
在本申请的实施例中，咸水进水管上除了设置咸水流量计和咸水变频泵外，还设置了咸水电动阀和咸水过滤器，且咸水变频泵、咸水过滤器、咸水电动阀和咸水流量计在咸水进水管上按照咸水的流动方向依次设置，咸水电动阀用于对咸水进水管进行开闭控制，而咸水过滤器则用于过滤咸水中大尺寸的杂质。相应地，淡水进水管上除了设置淡水流量计和淡水变频泵外，还设置了淡水电动阀和淡水过滤器，且淡水变频泵、淡水过滤器、淡水电动阀和淡水流量计在淡水进水管上按照淡水的流动方向依次设置，淡水电动阀用于对淡水进水管进行开闭控制，而淡水过滤器则用于过滤淡水中大尺寸的杂质。In the embodiment of the present application, in addition to the salt water flow meter and the salt water frequency conversion pump, the salt water electric valve and the salt water filter are also provided on the salt water inlet pipe, and the salt water frequency conversion pump, the salt water filter, the salt water electric valve and the salt water flow meter are sequentially arranged on the salt water inlet pipe according to the flow direction of the salt water, the salt water electric valve is used to control the opening and closing of the salt water inlet pipe, and the salt water filter is used to filter large-sized impurities in the salt water. Correspondingly, in addition to the fresh water flow meter and the fresh water frequency conversion pump, the fresh water filter, the fresh water electric valve and the fresh water filter are also provided on the fresh water inlet pipe, and the fresh water frequency conversion pump, the fresh water filter, the fresh water electric valve and the fresh water flow meter are sequentially arranged on the fresh water inlet pipe according to the flow direction of the fresh water, the fresh water electric valve is used to control the opening and closing of the fresh water inlet pipe, and the fresh water filter is used to filter large-sized impurities in the fresh water.
进一步地，混合水出水管上除了设置混合水流量计外，还设置了混合水变频泵、混合水电动阀和混合水过滤器，且混合水电动阀、混合水流量计、混合水变频泵和混合水过滤器在混合水进水管上按照混合水的流动方向依次设置，混合水变频泵用于对混合水出水管输出的混合水进行加压，以满足农田滴灌设施的灌溉需求，混合水电动阀用于对混合水出水管进行开闭控制，而混合水过滤器则用于过滤混合水中大尺寸的杂质。Furthermore, in addition to a mixed water flow meter, a mixed water frequency conversion pump, a mixed water electric valve and a mixed water filter are also provided on the mixed water outlet pipe, and the mixed water electric valve, mixed water flow meter, mixed water frequency conversion pump and mixed water filter are arranged in sequence on the mixed water inlet pipe according to the flow direction of the mixed water. The mixed water frequency conversion pump is used to pressurize the mixed water output by the mixed water outlet pipe to meet the irrigation needs of the farmland drip irrigation facilities, the mixed water electric valve is used to control the opening and closing of the mixed water outlet pipe, and the mixed water filter is used to filter large-sized impurities in the mixed water.
在检测得到咸水的盐分浓度、关键离子浓度、淡水水质以及提前设定的灌溉水适宜水质标准后，可以通过下式计算得到咸水流量和淡水流量的比例：After testing the salt concentration of salt water, key ion concentration, fresh water quality, and the pre-set suitable water quality standards for irrigation water, the ratio of salt water flow to fresh water flow can be calculated using the following formula:
上式中，Ci标准表示灌溉水适宜水质标准，Ci咸表示咸水浓度，包括盐分浓度和关键离子浓度，Qi咸表示咸水流量，Ci淡表示淡水水质，Qi淡表示淡水流量。In the above formula, Cistandard represents the suitable water quality standard for irrigation water, Cisalpine represents the salt water concentration, including salt concentration and key ion concentration, Qisalpine represents the salt water flow, Cifresh represents the fresh water quality, and Qifresh represents the fresh water flow.
进一步地，咸水进水管、淡水进水管以及混合水出水管上的水质监测装置均包含Na离子浓度传感器、Cl离子浓度传感器和总矿化度传感器，分别用于检测Na离子浓度、Cl离子浓度和总矿化度。灌溉水适宜水质标准包括Na离子标准、Cl离子标准和总矿化度标准，掺混控制装置在对咸水流量和淡水流量进行控制时，使混合水中Na离子浓度小于或等于Na离子标准，Cl离子浓度小于或等于Cl离子标准，同时也使总矿化度小于或等于总矿化度标准。Furthermore, the water quality monitoring devices on the salt water inlet pipe, the fresh water inlet pipe and the mixed water outlet pipe all include a Na ion concentration sensor, a Cl ion concentration sensor and a total mineralization sensor, which are used to detect the Na ion concentration, the Cl ion concentration and the total mineralization, respectively. Suitable water quality standards for irrigation water include the Na ion standard, the Cl ion standard and the total mineralization standard. When the mixing control device controls the salt water flow rate and the fresh water flow rate, the Na ion concentration in the mixed water is less than or equal to the Na ion standard, the Cl ion concentration is less than or equal to the Cl ion standard, and the total mineralization is also less than or equal to the total mineralization standard.
由于咸水中既存在Na离子、Cl离子，也存在其他离子，可能出现混合水中Na离子浓度达到相应标准，但是Cl离子浓度或总矿化度却超过了相应标准，或者相反的情况，因此在两个离子浓度中需要确保两个都不超过相应的标准，总矿化度也不超过相应的标准，进而满足农作物的灌溉需要。Since salt water contains both Na ions and Cl ions as well as other ions, it is possible that the Na ion concentration in the mixed water reaches the corresponding standard, but the Cl ion concentration or the total mineralization exceeds the corresponding standard, or vice versa. Therefore, it is necessary to ensure that neither of the two ion concentrations exceeds the corresponding standard and the total mineralization does not exceed the corresponding standard, thereby meeting the irrigation needs of crops.
在一种可能的实施例中，混合水出水管上还设置有水质监测设施，该水质监测设施用于检测混合水的盐分浓度以及对作物生长有害的关键离子浓度，掺混控制装置根据混合水的盐分浓度和关键离子浓度与灌溉水适宜水质标准的差异对咸水流量和淡水流量进行调节和控制。In a possible embodiment, a water quality monitoring facility is also provided on the mixed water outlet pipe, and the water quality monitoring facility is used to detect the salt concentration of the mixed water and the concentration of key ions harmful to crop growth. The mixing control device adjusts and controls the salt water flow and the fresh water flow according to the difference between the salt concentration and the key ion concentration of the mixed water and the suitable water quality standard for irrigation water.
示例性地，通过上述公式计算出的浓度为理论浓度，其和实际的浓度可能存在偏差，因此为了确保混合水浓度的准确，还需要采用混合水浓度进行反馈控制，对咸水变频泵和淡水变频泵输送的咸水流量和淡水流量进行相应调整，最终使混合水浓度达到和灌溉水适宜水质标准可接受的误差范围内。For example, the concentration calculated by the above formula is a theoretical concentration, which may deviate from the actual concentration. Therefore, in order to ensure the accuracy of the mixed water concentration, it is also necessary to use the mixed water concentration for feedback control, and make corresponding adjustments to the salt water flow and fresh water flow delivered by the salt water variable frequency pump and the fresh water variable frequency pump, so as to ultimately make the mixed water concentration reach an acceptable error range of the irrigation water quality standard.
在一种可能的实施例中，在向咸淡水掺混装置中注入咸水之前，先在咸淡水掺混装置中注入一定量的淡水，然后再同时注入淡水和咸水，在确定咸水流量和淡水流量的比例时，掺混控制装置还考虑已经注入咸淡水掺混装置的淡水的体积。In a possible embodiment, before injecting salt water into the salt-fresh water mixing device, a certain amount of fresh water is first injected into the salt-fresh water mixing device, and then fresh water and salt water are injected at the same time. When determining the ratio of the salt water flow rate to the fresh water flow rate, the mixing control device also considers the volume of fresh water that has been injected into the salt-fresh water mixing device.
示例性地，由于咸淡水掺混装置在注入咸水和淡水之后需要一定的时间才能搅拌均匀并输送至农田滴灌设施中，因此为了缩短等待的时间，在搅拌前可以先将咸淡水掺混装置中注满淡水，在向农田滴灌设施输送淡水的同时注入咸水和淡水并进行搅拌，此时从咸淡水掺混装置中输出水的流量和注入水的流量相同，可以确保在灌溉的同时也能持续进行咸淡水的掺混，不影响灌溉的顺利进行。For example, since the salt-fresh water mixing device needs a certain amount of time to stir the salt water and fresh water evenly and transport them to the farmland drip irrigation facilities after injecting salt water and fresh water, in order to shorten the waiting time, the salt-fresh water mixing device can be filled with fresh water before stirring, and salt water and fresh water can be injected and stirred while transporting fresh water to the farmland drip irrigation facilities. At this time, the flow rate of water output from the salt-fresh water mixing device is the same as the flow rate of water injected, which can ensure that the mixing of salt water and fresh water can continue during irrigation without affecting the smooth progress of irrigation.
由于咸淡水掺混装置中预先注入了淡水，因此在向其中注入咸水和淡水时可以考虑这部分淡水的体积，尽可能使搅拌后混合水的浓度不会低于标准浓度太多。当然，也可以不考虑这部分淡水，因为这部分淡水的存在，按照上述公式确定的比例注入咸水和淡水后，搅拌得到的混合水的浓度必然会低于灌溉水适宜水质标准，而且经过一定时间后，这部分淡水的影响将逐渐消失，最终使混合水的浓度达到计算的灌溉水适宜水质标准附近。Since fresh water is pre-injected into the salt-fresh water blending device, the volume of this part of fresh water can be considered when injecting salt water and fresh water into it, so that the concentration of the mixed water after stirring will not be too much lower than the standard concentration. Of course, this part of fresh water can also be ignored, because with the existence of this part of fresh water, after injecting salt water and fresh water in the ratio determined by the above formula, the concentration of the mixed water obtained by stirring will inevitably be lower than the suitable water quality standard for irrigation water, and after a certain period of time, the influence of this part of fresh water will gradually disappear, and finally the concentration of the mixed water will reach near the calculated suitable water quality standard for irrigation water.
在一种可能的实施例中，灌溉水适宜水质标准根据农作物的种类和生长阶段确定。In a possible embodiment, the appropriate water quality standard for irrigation water is determined according to the type and growth stage of the crop.
示例性地，每种农作物的耐盐能力不同，即使是同一种农作物，在不同的生长阶段耐盐能力也不一样，因此可以预先在掺混控制装置中输入灌溉水适宜水质标准与农作物种类以及生长阶段的对应关系，当人工输入农作物的种类以及当前的生长阶段后，掺混控制装置就可以根据该对应关系确定灌溉水适宜水质标准。For example, each crop has a different salt tolerance. Even for the same crop, the salt tolerance is different at different growth stages. Therefore, the correspondence between the appropriate water quality standard for irrigation water and the crop type and growth stage can be input into the mixing control device in advance. After the crop type and the current growth stage are manually input, the mixing control device can determine the appropriate water quality standard for irrigation water based on the correspondence.
本申请实施例还提供了一种咸淡水掺混灌溉方法，该方法包括以下步骤：The present application also provides a method for irrigation with mixed salt and fresh water, the method comprising the following steps:
检测咸水的盐分浓度以及对作物生长有害的关键离子浓度、咸水流量、淡水水质和淡水流量；Detect salt concentration of salt water and concentration of key ions harmful to crop growth, salt water flow, fresh water quality and fresh water flow;
根据咸水的盐分浓度、关键离子浓度、淡水水质以及设定的灌溉水适宜水质标准确定咸水流量和淡水流量的比例，通过咸水变频泵和淡水变频泵控制咸水和淡水按照比例输送至咸淡水掺混装置中；The ratio of salt water flow rate to fresh water flow rate is determined according to the salt water salinity, key ion concentration, fresh water quality and the set irrigation water suitable water quality standard, and the salt water and fresh water are transported to the salt-fresh water mixing device in proportion through the salt water variable frequency pump and the fresh water variable frequency pump;
对输入的咸水和淡水进行搅拌，形成混合水；The input salt water and fresh water are stirred to form mixed water;
检测混合水流量；Detect mixed water flow;
根据咸水流量、淡水流量和混合水流量对咸水变频泵和淡水变频泵进行控制，使咸水流量、淡水流量之和与混合水流量相同；The salt water variable frequency pump and the fresh water variable frequency pump are controlled according to the salt water flow, fresh water flow and mixed water flow, so that the sum of the salt water flow and the fresh water flow is the same as the mixed water flow;
利用混合水进行灌溉。Use mixed water for irrigation.
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.
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