Device for irrigation protivosudorozhnogo

 

(57) Abstract:

The invention relates to agriculture, namely, irrigation systems, and is designed to protect plants from spring frosts by irrigation limited: in greenhouses, gardens and so on, the Device comprises a working tank, connected with the auxiliary capacitance Flex and hermetically closed by a cover, a discharge pipe connected thereto by a float valve, the float is located inside the auxiliary tank, which is filled with water. Working volume of the tank is determined from the relation Vp= Fh/ (t1- t2), where Vp- working volume of the tank; F - cross-sectional area of the auxiliary capacitance; h - move the float from the state of complete closure of the float valve to its full open; t1- the temperature at which you should begin the opening of the float valve; t2- the temperature at which the float valve is completely closed; - the coefficient of volume expansion of air = 1/273. During operation, the device monitors the temperature and automatically turn on and off water flow to the sprinkler nozzle for protelevision maintenance and energy costs. 3 Il.

The invention relates to irrigation systems and can be used to protect plants from spring frosts by automatic irrigation limited - greenhouses, gardens, etc.

Known effective way of dealing with spring frost - protivosudorozhnoe sprinkling [1] with low intensity rain (0,03-0,1 mm/min) and with a diameter of drops of 0.4 to 1.6 mm, the Device consists of sprinklers connected to the water network. Sprinkling is carried out directly during freezing, i.e., is activated at a temperature of 0 - (-0,5)oC and after freezing off at a temperature of 0 - (+0,5)oC. Given that the minimum negative temperature falls in the wee hours (4-5 hours. a.m.), the use of this device creates certain difficulties as it requires continuous monitoring of the temperature during the night.

Closer are devices with software control used in the UK, USA and other foreign countries [2], [3]. Such devices consist of a flexible pressure pipes with sprinkler heads. The management of these devices is carried out by means of electrical contact thermostast, relays, pumps, and so on)

The use of such devices is suitable in industrial environments and for large farms. For personal and small farms described devices are technically complex and expensive, require skilled maintenance and connection to an electrical outlet that is unsafe.

The purpose of the invention is to simplify the design of the device, reducing its cost and ease of maintenance. This goal is achieved by the fact that the device containing the auxiliary tank filled with water, a discharge pipe connected thereto, a float valve, the float is located inside the auxiliary capacity, equipped with a working capacity, hermetically closed by a cover, which is connected to the auxiliary capacitance Flex, with working volume of the tank is proportional to the product of the cross-sectional area of the auxiliary capacitance on the stroke of the float when the float valve actuation and inversely proportional to the temperature interval corresponding to the beginning and end of operation of this valve.

In Fig. 1 presents a diagram of the device. It consists of the discharge pipe 1 water mains, blocked the pipe with a sprinkler nozzle (not shown). Float 4 valve 3 mounted on the swinging lever 12, is located in the auxiliary tank 5, which is connected by a flexible pipe 6 with a working capacity of 7, hermetically closed by a cover 8. Working volume of the tank Vpmust be equal:

< / BR>
where F is the cross-sectional area of the auxiliary capacitance 5;

h - move the float from the state of complete closure of the valve to its full open,

t1the temperature at which it should start opening the float valve 3;

t2- the temperature at which the valve 3 is fully open;

- coefficient of volume expansion of the air

The operation of the device is as follows.

Is filled with water auxiliary tank 5. While working tank 7 should be hermetically closed by the lid 8. Water should be dissolved a certain amount of salt, given that the device must operate at low temperatures. The resulting solution (hereinafter referred to as water) should not freeze at the temperature of the alleged freezing. After filling with water the float 4 should emerge and be on the surface of the water in the auxiliary tank 5, and float cleanpath in the sprinkler nozzle. The lever 12 of the float valve will be raised up until it stops.

If filling with water was carried out at a temperature t1at the beginning of the opening of the float valve, thus preparing the device for operation completes. The device will then include in the work by means of valve 2. When the ambient temperature tin> t1the valve 3 is closed. With decreasing temperature tinthere is a reduction in the volume of air in the working tank 7 (for each degree decreases its volume by the value of Vp). As a result, the pressure inside the tank 7 is reduced in comparison with the atmospheric force on the water in the auxiliary tank 5. The water level in the tank is reduced by the value of h corresponding to the temperature t2in which the valve 3 is fully opened. As the valve opening 3 of the water pipe 1 will flow for irrigation. With further decrease of temperature tin<tthe water level in the tank 5 will be reduced, but the valve 3 will remain in the fully open position. After freezing will increase the air temperature inside the vessel 7 and a corresponding increase in its volume. UB the pan 3 is closed. When the temperature tin> t1the valve 3 will remain in the closed position.

If at the stage of preparation for the work of filling with water is performed at a temperature tin> t1(for example, in the daytime, when the temperature is usually above the night), after the initial filling of the tank 5 with water to close the valve 3 it is necessary to pour water volume V, is equal to: .

V = Vp(tin-t1)

When the float 4 will be inside the tank 5 scuttled by the value of h1; (Fig.1), as the lever 12 valve 3 at a temperature t1will be raised until it stops. However, due to the fact that the size of the auxiliary tank 5 is limited, then V and height h1and therefore, the temperature tinalso will be limited.

The height h1can be increased either by bending arm 12, i.e., by reducing its horizontal part and a corresponding increase in vertical within certain limits (this will change and move lever (h), or installing a extension cable 10 (Fig. 2) the vertical part of the lever 12. The extension is a rod, which by the clamp 13 or other known method is attached to the vertical castellucia will be virtually unchanged. The value of the permissible elongation depends on the size of the cross-section F and should not limit the stroke of the float 4 when triggered. The level height in the tank 5 water will be much lower than in the case when the extension is not installed. If the working volume of the tank 7 exceeds the required value of Vpin working tank 7 through the cover 8 fill in some additional volume of water V1to the remaining free volume was equal to the desired value Vp. Due to the fact that the capacity of the 7 and 5 are connected by a flexible pipe 6, adjust the height position of the auxiliary tank 5 so that her bottom was at the level of the water in the working tank 7. After that, the tank 7 is hermetically closed by a cover 8, and then pour the water in the auxiliary tank 5 in accordance with the above method.

If the working capacity of 7 do not pour extra volume V1or pour the reduced volume, as can be seen from consideration of the above formulas to determine the volume Vpthis will lead to an increase in Vp, and hence to a decrease of the temperature interval t1-t2(while maintaining the same parameters F, h and t2= 0oC). This valechennai volume V1this will lead to a decrease in Vpand under the same conditions (maintaining the same parameters V, h and t2= 0oC) to increase the temperature t1.

The increase in temperature t1also achieved by connecting through pipe 9 to the auxiliary tank 5 tank 11 (Fig. 3). In this case, there is an increase of the parameter F (parameters Vp, t2and h must be unchanged). Thus, the proposed device monitors the temperature and automatically turn on and off water flow to the sprinkler nozzle. The proposed device is structurally simple, does not require special equipment and connection to the electrical network. It is easy to use and does not require skilled care.

Sources of information

1. Y. A. Markov. Irrigation and collective gardens. 1969, page 16.

2. H. M. Ionov. Irrigation of fruit and berry crops in temperate climates (review). "Horticulture and viticulture", N 6, 1989, pp. 45, 46.

3. E. P. Olefir. Protivosudorozhnoe sprinkling of some agricultural crops in Moscow is samorodnogo irrigation, containing auxiliary tank filled with water, pressure pipe with attached float valve, the float is located inside the auxiliary tank, characterized in that the device has a working capacity, which is connected to the auxiliary capacitance Flex and hermetically closed by a cover, with working volume of the tank is equal to

< / BR>
where Vp- working volume of the tank;

F is the cross-sectional area of the auxiliary capacitance;

h - move the float from the state of complete closure of the float valve to its full open;

t1- the temperature at which you should begin the opening of the float valve;

t2- the temperature at which the float valve is completely closed;

- coefficient of volume expansion of the air,



 

Same patents:

The invention relates to agriculture, particularly the cultivation of plants in greenhouses

The invention relates to agriculture, particularly the cultivation of plants in greenhouses

The invention relates to irrigation systems and can be used to implement automatic irrigation limited - greenhouses - greenhouses and garden sites

Device for watering // 2108027
The invention relates to agriculture, in particular to the mechanization of irrigation, and can be used for irrigation of agricultural crops by discrete supply of water in the hydration pockets

Device for watering // 2108027
The invention relates to agriculture, in particular to the mechanization of irrigation, and can be used for irrigation of agricultural crops by discrete supply of water in the hydration pockets

Device for watering // 2101928
The invention relates to agriculture, in particular to the mechanization of irrigation, and can be used for irrigation of agricultural crops by discrete supply of water in the hydration pockets

The invention relates to the field of crop production, namely, equipment for growing plants in greenhouses and can be used for irrigation of greenhouses

The invention relates to the field of crop production, namely, equipment for growing plants in greenhouses and can be used for irrigation of greenhouses

The invention relates to agricultural irrigation, in particular for pulse irrigation, and can be used for irrigation of orchards and vineyards

The invention relates to irrigated agriculture and can be used for automatic irrigation garden, home sites, as well as for use on an industrial scale

The invention relates to irrigation systems and can be used to implement automatic irrigation limited - greenhouses - greenhouses and garden sites

The invention relates to the field of agriculture, and is intended for automation of irrigation

Device for watering // 2108027
The invention relates to agriculture, in particular to the mechanization of irrigation, and can be used for irrigation of agricultural crops by discrete supply of water in the hydration pockets

The invention relates to the field of crop production, namely, equipment for growing plants in greenhouses and can be used for irrigation of greenhouses
Up!