SU1445301A1 - Device for sampling soil water from well - Google Patents

Abstract

This invention relates to the field of engineering research. The purpose of the invention is to increase the reliability of the sample being taken. The device contains a water intake chamber 1 suspended on a cable, with a drain valve 3 and a stopper 11 closing its inlet opening, which discharges the unit from the air outlet 4 CL 0 11 fi1

Description

By using channels 5t The device has a water outlet tube 4 with radial holes 9 10 rigidly fixed inside chamber 1 and forming an airtight cavity with it. The device has a messenger load that interacts with the cable. The lower end of the pipe 4 is located under the camera and forms its inlet. The assembly is made in the form of a valve with a stem 7. By means of a load, the stem 7 and the tightly connected plug I1 along the axis of the tube 4 "The stem 7 placed between the holes 9 and 10 are moved, thus protecting the tube 4 from the incoming water, ensuring removing air from chamber 1 and speeding up the process of filling it with water. When the cavity chamber I is filled with water, the load is removed and the rod 7 with the plug I1 seals the device, 2 sludge.

The invention relates to the field of engineering surveys, namely, devices for the selection of high-precision groundwater samples from observation wells.

The purpose of the invention is to increase the reliability of the sample being taken.

Fig, 1 shows the proposed device, the cut; Fig. 2 shows the position of the device when sampling in the well from two levels.

The device consists of a water intake chamber 1 suspended on a cable.

(FIG. 1) made in the form of a cylinder with upper and lower plugs. A ring 2 is welded to the upper plug of chamber 1 to secure the suspension cable that lowers the drop weight (not shown). A drain cock 3 is installed in the lower plug , Chamber J is equipped with a water intake tube 4 with a diameter of about 1 cm, passing through the entire water intake chamber and welded to its plugs to form an airtight cavity. The inlet of the intake chamber is formed at the lower end of the intake tube 4 located under the intake chamber at a distance equal to about half the height of this chamber. At the upper end of the water intake tube 4, radial holes are placed at DEUH levels, which connect the cavities of chamber 1 and tube 4 to. 6 with respect to the water intake tube 4 of the rod 7 protruding above the chamber 1 for interaction with the messenger load. Move

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the rod 7 is adjusted by a nut 8, and the rod stroke is chosen less than the distance between the radial holes -, mi 9 and 10 in the water intake tube 4; the inlet of the latter is closed by a stopper I1 rigidly connected to the rod 7, for example, using a metal needle 12, I

; The device works as follows.

The device is lowered into the well in such a way that the chamber 1 is completely submerged in water, and the end of the water intake tube 4 reaches a predetermined level of sampling. At the same time, the tube 4, due to its small diameter and long length of the protruding part, performs the function of a probe inserted into the studied layer without disturbing the natural state of the groundwater. Then, using a standard messenger load, mounted on a fishing line and lowered along a rope attached to ring 2, the rod 7 and the tightly connected plug 11 along the axis of the tube 4 are moved. This opens its inlet and water through the water intake tube 4 begins to flow through the holes 9 into the chamber I and force air out of it through the hole 10 and the air exhaust ducts 5, and in this position the rod 7 pc1 is displaced between the holes 9 and 10 and in a way protects the air exhaust holes 10 into the tube 4 of water, about Ensures air exhaust from chamber 1 and accelerates the process of filling the water sample device .; After the water sample completely fills chamber 1, the messenger load on the fishing line is removed.

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from the well, and the rod 7 and tube 11 seal the device.

After removing the device from the well, the water sample is transferred to the analyzer tank without breaking the vacuum sealing through the drain valve 3. As a result, contact of the water sample with atmospheric air and gas losses from the sample are excluded, Q

Claims (1)

The device eliminates mixing of the water sample with air and water from other levels of the well due to the fact that the sampler is immersed to the required sampling depth with its water intake tube, not entering chamber 1 into the test layer. The increase in the duration of sampling is a positive factor since the natural state of the groundwater flow is less disturbed. Invention Formula A device for sampling groundwater from a well, containing a water intake chamber suspended on a cable with a drain valve and a stopper, closed1 its inlet, and the air vent assembly with air vent channels, characterized in that, in order to increase the reliability of the sampled sample, it is equipped with a water intake tube with radial openings rigidly fixed inside the water intake chamber and forming a sealed cavity with it , and a messenger load interacting with the suspension cable, with the lower end of the water intake tube located under the water intake chamber and forming its inlet, the air outlet unit is designed as a valve with a stem, rigid connected to the stopper, spring-loaded relative to the water intake tube and installed inside its upper part with the possibility of B3ajiMo-action with a messenger load, sealing the water intake chamber in the upper position of the rod and communicating the inlet opening to the air intake channels and the cavity of the water intake chamber in lower rod position. 1 / g, 2. Editor Tehred M. Morgenthal Order 4331 Circulation 479 Subscription VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Razppskaya Embankment, 4/5 Production and Publishing Combine Patent, g, Uzhgorod, st. Gagarin, 101 Proofreader MoDamchik