RU51221U1 - LIQUID SAMPLE - Google Patents

Abstract

Liquid sampler refers to devices for sampling liquids from large depths from tanks, reservoirs, wells and can be used in various industries. The objective of the utility model is to increase the reliability of sampling the lower layers of the liquid. The technical result that can be obtained using the utility model is to reduce the sampling time due to the simultaneous actuation of the inlet and drain valves, as well as to improve the quality of sampling of the lower fluid layers by introducing a support device on a single spring-loaded movable rod. This object is achieved in that the liquid sampler comprises a sampling vessel made in the form of a cylindrical body with a heavy bottom and a lid, a locking device and a suspension with a support cable. In turn, the locking device is made in the form of a spring-loaded movable rod, in the upper part of which there is a plate, a sealing drain valve made on the outer surface of the sampler cover and a spring with a limiter installed on the side of its inner surface, and a plate is installed in the lower part of the rod, a sealing inlet valve made on the inner surface of the bottom of the sampler and the support device, on the side surface of which holes are made for the passage of fluid. Using the proposed sampler allows you to increase the reliability of the sample taken of the lower layers of the liquid due to the simultaneous opening of the valves of the sampler when it reaches the bottom of the reservoir, as well as due to the rapid flow of fluid from the lower layers of the reservoir. It is easy to manufacture and operate and eliminates spontaneous opening.

Description

The utility model relates to devices for sampling liquids from large depths from tanks, reservoirs, wells and can be used in various industries.

A known sampler containing a sampling vessel made in the form of a heavy cylindrical body with a hole in the top cover, a closed stopper, a cable with a freely sagging loop connected to a locking device with a magnetic latch, pendants in the form of brackets with ears, to which the sampler’s bow is attached ( AS 1045054, MKI: G 01 N 1/10, published in BI No. 36, 1983).

However, this sampler does not provide the reliability of the samples taken, because when lowering this sampler due to the accidental opening of the magnetic latch during lowering of the sampler, sampling may occur at a specified depth and the sample taken will not correspond to the sample from the required depth; in addition, when lifting a sampler with a sample taken in the test medium, the surface layer of the sample is mixed and it may be unreliable.

The closest in technical essence and the achieved technical effect to the proposed technical solution is a device for sampling liquids from great depths from tanks or ponds (RF patent No. 2191364 "Liquid sampler" IPC G 01 N 1/10 from 10.20.2002). It contains a sampling vessel, made in the form of a heavy cylindrical body with a hole in the top cover, closed with a stopper. The sampler has a suspension in the form of brackets with ears to which the handle of the sampler is attached. The sampler has a supporting cable with a freely sagging loop connected to a locking device. The latter is made in the form of a lever mounted on the cover of the sampler with a stopper mounted on it. The plug closes the inlet of the sampling tube. A calibrated thread connects the handle of the sampler to the bottom of the cable. The cable is attached to the lever with the formation of a freely sagging loop. This improves the reliability of the sample and ensures reliable operation of the sampler at a given depth.

In the process, the sampler on the cable is lowered to the desired depth. To take a sample, break the calibrated thread. After that, the section of the loosely sagging loop of the cable will be tensioned due to the force exerted on the cable, and will pull up the lever with the rubber stopper. The sampled fluid will enter the sampling vessel through a sampling tube.

After the sample vessel is completely filled with liquid, it is raised to the surface with a cable.

The disadvantage of this device is that the internal volume of the sampler is filled with liquid for a very long time. In addition, the liquid enters the inner surface of the sampler from the side of the lid, located at a certain height from the bottom of the reservoir, which does not allow you to take a sample from its lower layers.

The objective of the utility model is to increase the reliability of sampling the lower layers of the liquid.

The technical result that can be obtained using the utility model is to reduce the sampling time due to the simultaneous actuation of the inlet and drain valves, as well as to improve the quality of sampling of the lower fluid layers by introducing a support device on a single spring-loaded movable rod.

The problem is achieved in that the liquid sampler contains a sampling vessel made in the form of a cylindrical body with a heavy bottom and a cover, a locking device and suspension with a support cable. In turn, the locking device is made in the form of a spring-loaded movable rod, in the upper part of which there is a plate, a sealing drain valve made on the outer surface of the sampler cover and a spring with a limiter installed on the side of its inner surface, and a plate is installed in the lower part of the rod, a sealing inlet valve made on the inner surface of the bottom of the sampler and the support device, on the side surface of which holes are made for the passage of fluid.

The essence of the utility model is illustrated by drawings, in which Fig. 1 shows the position of the sampler in the initial state, Fig. 2 - during sampling and Fig. 3 - during the lifting of the sample, where: 1 - sampling vessel;

2 - locking device;

3 - suspension with a support cable;

4 - drain valve;

5 - inlet valve;

6 - stock;

7 - plate drain valve;

8 - plate inlet valve;

9 - supporting device;

10 - limiter;

11 - spring.

The sampler consists of a sampling vessel 1 (Fig. 1), made in the form of a cylindrical body with a heavy bottom and a cover, a locking device 2 and a suspension 3 with a support cable. On the outer surface of the cover of the sampling vessel 1, a drain valve 4 is made, and on the inner surface of its bottom, an inlet valve 5.

The locking device 2 is designed to fill the inner surface of the sampling vessel 1 with liquid and its sealing. It consists of a stem 6 and plates 7 of the drain valve 4 fixed thereon, plates 8 of the intake valve 5, a support device 9, on the side surface of which holes are made for the passage of fluid, and also a limiter 10 for the spring 11.

In the initial state, the rod 6 is in its lowest position (figure 1). Under the action of the spring 11 of the plate 7 and 8 hermetically close the valve seats 4 and 5.

The device operates as follows (figure 2).

The sampler on the cable fixed to the suspension is lowered to contact with the bottom surface of the reservoir. The heavy execution of the bottom of the sampling vessel 1 ensures its lowering strictly vertically.

At the end of the dive, corresponding to reaching the bottom of the reservoir, the pins made on the bottom of the sampling vessel 1 enter the bottom layer of the soil and the device is firmly fixed in the soil. At the same time, under the action of the force acting on the stem 6 from the bottom surface of the reservoir, it moves to its highest position, compressing the spring 11. At the same time, the drainage 4 and inlet 5 valves open simultaneously. The support device 9 also moves up to the stop in the bottom of the sampler. Through holes made on the side surface of the support device 9, the fluid begins to flow into the internal cavity of the sampler.

The simultaneous actuation of the drainage 4 and inlet 5 valves facilitates the rapid filling with liquid of the internal cavity of the sampler, which reduces the sampling time. Rapid filling of the internal cavity of the sampler with the lower layers of liquid contributes to the reliability of the sample taken.

After the sampler is completely filled with liquid, it is raised to the surface by means of a suspension 3 with a supporting cable. In this case, the sampler comes off the bottom of the reservoir. At this point, the rod 6 under the action of the spring 11 is moved to its lowest position (figure 3). Drain 4 and inlet 5 valves are closed, which seals the internal volume of the sampler and ensures non-mixing of the sampled

samples while raising the sampler.

To drain the selected sample, it is necessary to manually move the stem 6 upward, holding it in the area of the drain valve 4. After that, the sample through the inlet valve 5 is poured into the dishes for further analysis.

To take the next sample, the sampler is returned to its original state. If necessary, treat its inner surface.

Using the proposed sampler allows you to increase the reliability of the sample taken of the lower layers of the liquid due to the simultaneous opening of the valves of the sampler when it reaches the bottom of the reservoir, as well as due to the rapid flow of fluid from the lower layers of the reservoir. It is easy to manufacture and operate and eliminates spontaneous opening.

Claims (1)

A liquid sampler containing a sampling vessel made in the form of a cylindrical body with a heavy bottom and a cover, a locking device and a suspension with a support cable, characterized in that the locking device is made in the form of a spring-loaded movable rod, in the upper part of which there is a plate that seals the drainage valve, made on the outer surface of the cover of the sampler and a spring with a stopper installed on the side of its inner surface, and a plate is installed in the lower part of the stem an inlet valve made on the inner surface of the bottom of the sampler and the support device, on the side surface of which holes are made for the passage of fluid.