RU52972U1 - DISPENSER FOR LIQUID REAGENTS - Google Patents

Abstract

The utility model relates to chemical equipment, and more specifically, to devices for the dosed introduction of liquid reagents into a pressure pipeline, and can be used, for example, in water treatment systems, in the chemical and petrochemical industries, as well as in the extraction and transportation of oil and gas. The liquid reagent dispenser includes a hollow container, a liquid pipe, a first restriction located in the pipe, a first pipe connected to the pipe upstream of the first pipe and communicating with the container, a second pipe connecting the lower part of the container with the pipe downstream of the first pipe , an exhaust valve in communication with the lower part of the container, a filler neck in the upper part of the container, means for closing the filler neck, the first tube communicating with the upper part of the container Inner, both tubes are equipped with shut-off valves, and a second restriction is located inside one of the tubes.

Description

The utility model relates to chemical equipment, and more specifically, to devices for the dosed introduction of liquid reagents into a pressure pipeline, and can be used, for example, in water treatment systems, in the chemical and petrochemical industries, as well as in the extraction and transportation of oil and gas.

State of the art

A known system for mixing liquid [1]. A device for mixing a liquid in a water supply pipe includes a Venturi pipe in the pipe, the narrowing of which ends with a sharp protrusion, a reservoir for storing the liquid to be mixed, a connecting pipe between the above tank and the above Venturi pipe, a control valve on the above connecting pipe, and a pressure tank connected with piping and with the above tank. The disadvantages of the described design of the dispenser include its structural complexity and cumbersome due to the presence of a pressure tank, which must work under pressure. Another disadvantage is the difficulty and insecurity of maintaining a constant ratio between the flow of the dosed liquid and the medium in the pipeline using the control valve.

A device for dosing water treatment is known [2], in which the auxiliary water flow with a flow rate proportional to

flow rate in the main pipeline, is diverted from the latter before calibrated constriction, saturated with processing substances and returned to the main pipeline after constriction, in which the processing substances, which must be dissolved by the auxiliary stream, are placed on a bed of granular materials insoluble in water in a container, through which the auxiliary stream flows, flowing from the bottom to the top of the container. The device includes an inlet tube starting from the point before narrowing at the base of the container, and leading an auxiliary water stream below the bed of granular materials so that while it passes this bed, it is divided into separate small streams before passing through the substances for processing with which it saturates before finally joining the stream in the main pipeline. The disadvantages of this design include the use for the treatment of water solids dosed in water. This device is not suitable for dispensing liquid reagents, since when an auxiliary stream of water is supplied to the container, it is crushed into separate small streams and mixes well with the dosed reagent, as a result of which a solution of the dosed reagent in water is returned to the main pipeline.

The closest in essence and the technical result achieved to the claimed technical solution is a liquid dispenser for pressure feed line [3]. Dispenser contains closed

a hollow pressure container, the above container includes means dividing the inner cavity of the above container into first and second closed compartments, gas bypass means connecting the upper parts of the above compartments for pressurized gas from the upper part of the above first compartment to the upper part of the above second compartment, pressure a fluid pipe attached to the above container at an upper position relative to the upper boundary of the above container, the above the pressure pipe includes devices for collapsible connection of the supply and discharge lines, a restriction in the above pipeline, an auxiliary line connecting the above pipeline upstream of the restriction, with the lower part of the inner cavity of the above first compartment, communicating with its lower part, and a dosing liquid supply line connecting the lower part of the aforementioned second compartment with the aforementioned pipeline downstream of the narrowing, the aforementioned second compartment is adapted for supplying liquid to it, which should be proportionately dosed into the above pipeline, the above container has an exhaust valve in communication with the lower part of the above first compartment, the top cover of the above container has a filler neck through which liquid, which should be proportionately dosed into the above pipeline, can be introduced into the above second

compartment, and a removable cover for the above filler neck. The disadvantages of the described design of the dispenser include structural complexity and bulkiness. The internal cavity of the container is divided into two compartments by a special tool (partition). Strength analysis and manufacturing of such a container are laborious. The upper part of each compartment is filled with gas bypassed from one compartment to another. At the bottom of the first compartment is water. Because of this, the volume of the container must be significantly larger than the volume of the portion of the reagent to be filled into the container.

Utility Model Disclosure

The purpose of the claimed utility model is to simplify and improve the consumer qualities of the dispenser. The technical result, which is achieved by the claimed design, is to reduce the number of structural elements of the dispenser, reducing its dimensions, increasing reliability and ease of use.

The technical result is achieved by the fact that the dispenser for liquid reagents includes a hollow container, a liquid pipeline, a first restriction located in the pipeline, a first pipe connected to the pipeline upstream of the first restriction and communicating with the container, a second pipe connecting the lower part of the container to the pipeline downstream of the first constriction, an exhaust valve communicating with the lower part of the container, a filler neck in the upper part of the container, means for closing the filler neck,

moreover, the first tube communicates with the upper part of the container, both tubes are equipped with shut-off valves, and a second narrowing is located inside one of the tubes.

The dispenser works as follows. Through the filler neck, a reagent is placed in the container, the density of which should be greater than the density of the medium in the pipeline. After that, the filler neck is closed with the means intended for this and the shut-off valves on both tubes are opened. When the medium flows through the pipeline, an overpressure occurs before the first narrowing. The medium from the pipeline under this excess pressure through the first tube enters the upper part of the container filled with reagent. As a result, the reagent from the bottom of the container enters the pipeline through a second tube attached to the pipeline downstream of the first constriction. The flow rate of the medium from the pipeline to the upper part of the container and, accordingly, the flow rate of the reagent from the bottom of the container to the pipeline is limited by the second restriction in one of the tubes. After the reagent has been used up, the shut-off valves on both tubes are closed, the filler neck and the outlet valve are opened and the container is empty, after which the dosing process is repeated.

Compared with the prototype, the fact that the first tube communicates with the upper part of the container, both tubes are equipped with shut-off valves, and a second narrowing is located inside one of the tubes,

new. The fact that the first tube communicates with the upper part of the container eliminates the mixing of the reagent with the medium from the pipeline without dividing the container’s internal cavity into two parts, thereby simplifying the design of the dispenser and reducing its dimensions. The fact that both tubes are equipped with shut-off valves allows reagent to be loaded into the container without stopping the flow of medium through the pipeline and thereby increases the usability of the dispenser. The fact that a second narrowing is located inside one of the tubes eliminates the control valve and thereby simplifies the design of the dispenser and improves the reliability of dosing.

Brief Description of the Drawings

The figure shows a diagram of the implementation of the claimed utility model. The following notation is used in the diagram:

1 - container for reagent;

2 - pipeline;

3 - the first narrowing;

4 - the first tube;

5 - the second tube;

6 - exhaust valve;

7 - filler neck;

8 - means for closing the filler neck;

9 - shutoff valves;

10 - the second narrowing.

Utility Model Implementation

The liquid reagent dispenser contains a reagent container 1, a pipe 2, inside which the first restriction 3 is located. Upstream from the first restriction 3, a pipe 4 is connected to a pipe 2, communicating with the upper part of the container 1. A pipe 5 is connected to the lower part of the container 1, communicating with the pipeline 2 downstream from the first restriction 3. The exhaust valve 6 communicates with the lower part of the container 1. The filler neck 7 communicates with the upper part of the container 1 and can be closed by means 8 intended for this. Tubes 4 and 5 are equipped with shutoff valves 9. Inside one of the tubes (for example, inside the tube 5), a second restriction 10 is located.

The dispenser works as follows. Through the filler neck 7, a reagent is placed in the container 1, the density of which is greater than the density of the medium in the pipeline 2. After that, the filler neck 7 is closed with the means 8 intended for this and the shut-off valves 9 are opened on the tubes 4 and 5. When the medium flows through the pipeline 2 before the first narrowing 3 there is an excess pressure proportional to the square of the flow rate of the medium. According to this pressure, the medium from the pipeline 2 under this excess pressure passes through the pipe 4 to the upper part of the container 1, and the reagent from the lower part of the container 1 passes through the pipe 5 to the pipe 2. The medium flows from the pipeline 2 to the upper part of the container 1 and, accordingly , arrival rate

the reagent from the bottom of the container 1 to the pipe 2 is limited by the second constriction 10 and is proportional to the square root of the excess pressure. Therefore, the rate of reagent entry into the pipeline is proportional to the flow rate of the medium in the pipeline. After the reagent has been used up, the shutoff valves 9 on the tubes 4 and 5 are closed, the filler neck 7 and the outlet valve 6 are opened and the container 1 is empty, after which the dosing process is repeated.

Liquid dispenser can be used in industry. The inventive design is simple, cheap, reliable, and at the same time provides a constant ratio of the supply of reagent to the flow rate of the medium in the pipeline when changing the flow rate of the medium in the pipeline. These qualities make the use of the claimed design possible and advisable, for example, in water treatment systems, in the chemical and petrochemical industries, as well as in the extraction and transportation of oil and gas. To implement the claimed invention does not require complex technical means. The manufacture of a dispenser for liquid reagents of the described construction is possible using well-known and widely used in industry methods using equipment traditionally used in chemical and oil and gas engineering.

Sources taken into account when preparing the application:

1. US patent No. 2227646, NPK 299-84, publ. 01/07/1941. Liquid mixing system / Hillmann M.G.

2. UK patent No. 959149, IPC B 01 F, publ. 05/26/1964. Device for the treatment of water by dosing / Vandevelde A. G.

3. US patent No. 4112964, NPK 137 / 205.5, IPC F 16 K 19/00, publ. 09/12/1978. Liquid proportioner for pressure feed line / Banks B.W.

Claims (1)

Dispenser for liquid reagents, including a hollow container, a liquid pipeline, a first restriction located in the pipeline, a first pipe connected to the pipeline upstream of the first restriction and communicating with the container, a second pipe connecting the lower part of the container to the pipeline downstream of the first constriction, exhaust valve in communication with the lower part of the container, filler neck in the upper part of the container, means for closing the filler neck, characterized in that the first tube communicates with the top hne part of the container, both tubes are equipped with shut-off valves, and a second narrowing is located inside one of the tubes.