RU80890U1 - CHEMICAL REAGENT DOSING SYSTEM - Google Patents

Abstract

The utility model relates to the oil industry and can be used for dosed supply of chemical reagents into wells, process and main pipelines.

The objective of the utility model is to ensure reliable operation of the installation and ease of use.

The problem is solved in that the installation for the dosed supply of chemical reagents includes a container for the reagent, a dosing unit with suction and discharge pipelines connected to it, a filter, and a level sensor. The dosing unit is made in the form of a monoblock uniting a metering pump, drive, control system, automation, telemechanics, and is housed in a thermally insulated and explosion-proof housing equipped with a thermal control system. The suction pipe, placed in the tank for the reagent, is heated and equipped with a filter mounted on its lower end, and a level sensor. The discharge pipeline is heated, and a three-way valve is installed in it, one of the lines of which is connected with the tank. The container for the reagent is made in the form of a barrel for transporting the reagent and is placed in a metal casing on a sliding platform.

Description

The utility model relates to the oil industry and can be used for dosed supply of chemical reagents to wells, process and main pipelines.

A device (analogue) for the dosed supply of a chemical reagent into a well, comprising a dispenser hydraulically connected to a container for a chemical reagent and a discharge line communicated with the well, an exhaust valve, and a dispenser drive kinematically connected to the dispenser [1].

The disadvantage of this device is the possibility of solidification or freezing of the reagent during operation at low temperatures.

Closest to the claimed (prototype) is a metering pump unit [2], containing a container for the reagent with a neck for the bay and a drain hole, a metering pump connected to the tank through pipelines through a valve, a fine filter installed in front of the suction part of the pump dispenser, level gauge, electrical contact pressure gauge installed through the valve on the pipeline for supplying the reagent, shut-off valve and check valve. The fine cleaning device is removed from the tank, a level gauge is installed on it, a coarse filter is installed in the reagent neck in the reagent tank, and the reagent tank and all technological equipment are installed in a heat-insulated case equipped with a heater with a temperature sensor to maintain the set temperature inside the case.

The disadvantages of this method are the high cost of executing a thermally insulated body, the cost of energy for heating an empty

the space inside the case, the possibility of freezing or freezing of the reagent in the discharge line during operation of the device at low temperatures, which entails a halt in the operation of the device.

The objective of the utility model is to ensure reliable operation of the installation and ease of use.

The problem is solved in that the installation for the dosed supply of chemical reagents includes a container for the reagent, a dosing unit with suction and discharge pipelines connected to it, a filter, and a level sensor. The dosing unit is made in the form of a monoblock uniting a metering pump, drive, control system, automation, telemechanics, and is housed in a thermally insulated and explosion-proof housing equipped with a thermal control system. The suction pipe, placed in the tank for the reagent, is heated and equipped with a filter mounted on its lower end, and a level sensor. The discharge pipeline is heated, and a three-way valve is installed in it, one of the lines of which is connected with the tank. The container for the reagent is made in the form of a barrel for transporting the reagent and is placed in a metal casing on a sliding platform.

In FIG. schematically shows the inventive installation for the dosed supply of chemical reagents, where

1 - tank for reagent;

2 - dosing unit;

3 - casing of the dosing unit;

4 - suction pipe;

5 - discharge pipe;

6 - filter;

7 - level sensor;

8 - three-way valve;

9 - line three-way valve;

10 - metal casing;

11 - extendable platform.

The inventive installation operates as follows. When the installation is working, the heated reagent is pumped, since the suction pipe 4 is heated. In the dosage unit 2 itself, made in the form of a monoblock uniting a metering pump, a drive, control systems, automation, telemechanics, the temperature of the reagent is maintained, since it is located in a thermally insulated housing 3 equipped with a temperature control system. Next, the heated reagent is injected, since the discharge pipe 5 is also made with heating. So, due to the suction 4 and discharge 5 pipelines made with heating, only the reagent is heated, and not first the space and other components of the installation, followed by the transfer of heat to the reagent. The reagent is sucked from the tank 1 through a filter 6 mounted on the pressed end of the suction pipe 4, and a level 7 sensor is also installed there.

When operating at low temperatures, the unit provides for preheating of the reagent. So, before starting the installation, the three-way valve 8 closes the discharge pipe 5 and the reagent returns through the line of the three-way valve 9 to the tank 1. So, by pumping the reagent in a closed system, the tank - metering unit - the three-way valve - the three-way valve line - the tank preheats the reagent and exits setting to the required temperature. Then the three-way valve 8 is switched and the reagent enters the discharge pipe 5.

Heating reduces the viscosity of the reagent, which increases its efficiency, and also, when the unit is operated at low temperatures, prevents it from freezing and freezing, which increases the reliability of the installation.

As a container 1 for the reagent, a barrel for transporting the reagent is used. So the barrel from the vehicle is installed by the loader into the metal casing 10 on the sliding platform 11, then the sliding platform 11 is retracted to the initial position and the suction pipe 4 and the line of the three-way valve 9 are connected to the barrel. So the container for the reagent 7 is protected from damage by the metal casing 11, and in case of leakage from the tank 1, the reagent accumulates in the casing 11, which prevents the reagent from spilling onto the soil.

Thus, the inventive installation provides both a reliable supply of the reagent, and increases the efficiency of its action, and also reduces the loss of reagent, since there is no process of transfusion of the reagent from the barrel into a stationary container and if the barrel is damaged, the reagent accumulates in the casing.

Information sources:

1. Patent 20021274487 of the Russian Federation, 7 ЕВВ 37/06, 2004.

2. Patent 2007109040 of the Russian Federation, 7 ЕВВ 37/00, 2008.

Claims (5)

1. Installation for the dosed supply of chemical reagents, including a container for the reagent, a dosing unit with suction and discharge pipes connected to it, a filter, a level sensor, characterized in that the dosing unit is made in the form of a monoblock uniting a metering pump, drive, control system , automation, telemechanics, and is housed in a thermally insulated and explosion-proof enclosure equipped with a thermal control system. 2. Installation according to claim 1, characterized in that the suction pipe, placed in the tank for the reagent, is heated and equipped with a filter mounted on its lower end, and a level sensor. 3. Installation according to claim 1, characterized in that the discharge pipe is made with heating. 4. Installation according to claim 1, characterized in that a three-way valve is installed in the discharge pipe, one of the lines of which is in communication with the tank. 5. Installation according to claim 1, characterized in that the container is made in the form of a barrel for transporting the reagent and is placed in a metal casing on a sliding platform.