SU1215099A1 - Device for controlling level of underground water in well - Google Patents

Abstract

The invention relates to land reclamation and can be used to automate the regulation of groundwater levels in drainage and humidification systems. The device contains a membrane valve, the working chamber of which is in communication with the well and through a double valve box with a water pipe. The valves of the two-valve box are installed at the source and connected to the sensitive element. The implementation of the sensing element in the form of a hollow cylinder, the cavity of which communicates with the outlet pipe and the atmosphere, connecting the rod to one arm of the rocker arm, the other arm of which is connected to a vertical sealed tube immersed in the well, allows to simplify the adjustment process and improve the control of axle modes. - a stinging and moisturizing network. 1 hp f-ly. 1 il. W with ts3 01 with; o

Description

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Isoorem. Relate to land reclamation and can be used to automate the regulation of groundwater levels in drainage and humidification systems, the regulating network of which is made in the form of horizontal tubular drainage.

The purpose of the invention is to simplify the process of regulating groundwater levels and increasing the efficiency of controlling the drainage-humidifying network.

The drawing shows a diagram of the device.,

The device contains a membrane valve consisting of a disk 1 attached to an elastic membrane 2, a working chamber 3, the casing of which, by means of the ribs 4, is rigidly connected to the water discharge pipe 5, and the area of the membrane 2 significantly exceeds the area of the passage through section of the outlet pipe water supply pipe 5. The water outlet pipe 5 communicates the control well 6 with the open channel 7 and mates with the last mouth 8. The two valve box 9 is connected to the well 6 by the hole 10, with the water outlet pipe 5 - 115 with the working chamber 3 — pipeline 12. The opening 10 and the tube 11 are closed by valves 13 and 14 located on the rod 15, on which the sensitive element 16 is mounted, and its position on the rod is controlled by a screw 17. The sensitive element 16 is made in a hollow cylinder, the height of which exceeds the possible fluctuations, water levels in the well 6 and its cavity is connected with the water outlet pipe 5 or channel 7 with pipe 18 and with the atmosphere - hole 19. The stem 15 is tarnished with one arm of the rocker arm 20, the other shoulder of which St. The vertical sealed tube 21 is immersed in the well 6. The cross section of the tube 21 along its outer diameter is equal to the product of the common area of the cross sections of the walls of the hollow cylinder and the stem 15 and the ratio of the lengths of the arms of the rocker arms 20 (with equal arm of the balance arm the area of the pipe and the cross section of the metal structures of the sensing element are ). In the lower part of the hollow cylinder the float 22 is fixed, the moment of lifting force KOTopoi o at its

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diving under the minimum level

water exceeds the moment of force of the weight of the sensitive element 16 and the moving parts associated with it. At one of the arms of the rocker arm 20, a lightened counterweight 23 is installed, the position of which on the rocker arm determines the setpoint of the regulator.

The device works as follows about} 0 at a time.

When the water level in the well 6 is lower than the water level in channel 7 (levels 24 and 25), which occurs when water is supplied to the drainage network,

15 water level in the cavity of the hollow cylinder; which is practically equal to the water level in channel 7, is also higher than the water level in the well 6. At that, the position of the rod 15 depends on the difference

2Q of water levels in the hollow cylinder and well 6. Decreasing the water level in channel 7 leads to an increase in loading of the sensing element 16, lowering 15, decreasing by 25 times the water in the double valve box 9 and the working chamber 3. In this connection, the force of hydrostatic pressure decreases acting from the side of the working chamber 3, the membrane 2 bends inside the working chamber 3, the flow of water entering the well 6 increases, and the level in it increases. A level increase in the well 6 at a constant level in channel 7 entails an increase in the lifting force acting on 5 cylinders and raising the cylinder. At the same time, the pressure in the double valve box 9 and the working chamber 3 is increased, and the membrane 2 reduces the opening of the outlet section of the supply pipe 5. The weight of the hollow cylinder decreases due to submerging it under water at higher levels of water in the well 6 than at low compensated for

 force acting on the tube 21. When the hydraulic differential between the channel 7 and the well 6,. more given by an amount greater than the stroke 15,. the latter is at the bottom

50 position. In this case, the resultant pressure forces acting on the membrane 2 have the maximum value, the membrane 2 bends inside of whose chamber 3 and the maximum

55 but water supply to the drainage network is possible. Similarly, when the hydraulic differential between the well 6 and channel 7, less than the specified value.

thirty

3

exceeding the stroke of the rod 15, the latter is in the extreme upper position, the pressure of the water in chamber 3 is set equal to the pressure in the water outlet pipe 5. The forces acting on the membrane 2 from the inner side exceed the forces acting from the outer side due to the difference of the areas of the membrane 2 and the working the sections of the water outlet pipe 5, the membrane 2 bends, and the disk 1 completely overflows the water outlet.

If it is necessary to change the pressure of the drainage network, the water level in the channel 7 changes and when this level is lowered, the hydraulic differential between channel 7 and the well 6 increases, which results in an increase in water consumption fed to the drainage network until the predetermined differential is restored. When the water level in channel 7 decreases, water supply to the well stops.

6 until the level in it decreases, which corresponds to a predetermined difference (a decrease in the level in well 6 occurs due to evaporation of moisture from the soil surface and transpiration by its plants). If the amount of decrease in the level in channel 7 exceeds the value of the specified differential (the level decreases to level 26), the water level in the channel

7 and the cavity of the hollow cylinder becomes lower than level 24, the whole cylinder pops up, the rod 15 occupies the uppermost position and the pressure in the working chamber 3 corresponds to level 26. Because of the pressure difference across the membrane

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2 last bends inward, the working chamber 3 f causes the well 6 to be emptied and the piezometric head in the drainage network decreases. 5 In the same way, the network is switched to the drainage mode when the water level in channel 7 is converted to level 27.

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Claims (2)

1. A device for adjusting the level of groundwater in the well, containing a membrane valve installed on the water outlet pipe, the working chamber of which is connected to the well and through a two-valve box - with a water outlet pipe, valves of the two-valve box are installed on the rod and connected to a sensitive element characterized by that, in order to simplify the process of regulating groundwater levels and increase the efficiency of controlling the regimes of the drying and humidifying network, the sensitive element is made pologo cylinder cavity which communicates with the water discharge pipe and the atmosphere, wherein the rod is connected to one arm of the rocker, the other arm of which is connected to the vertical submerged in well sealed tube. 2. The POP.1 device, distinguished by the fact that the hollow cylinder is provided with a float set at the lowest possible water level in the well. Compiled by T. Zadvorna Editor K. Voloshchuk Tehred O. Nece CorrectorG. Reshetnik Order 907/56 Circulation 837 Subscription All the USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 .. ". .. m, J- IJ .. -II - ig .- -. , Branch PSh1 Patent, Uzhgorod, Proektna St., 4