RU80031U1 - DEVICE FOR REGULATING THE CONSUMPTION OF THE ODORANT - Google Patents

Abstract

The utility model relates to automatic control of fluid flow and can be used in odorizing gas, where a proportional flow of odorant into the gas is required.

The objective of the utility model is to increase the operational reliability and efficiency of the device while maintaining sufficient accuracy in regulating the flow of odorant into the gas pipeline.

The technical result is achieved by the fact that the device for controlling the flow of odorant containing a flow tank with a level indicator and a fine filter, a metering pump, a flow meter and a gas pipeline, is equipped with a control unit with a gas flow meter to perform the function of automatic control of the metering pump, and the pump Dispenser made according to the diaphragm hydraulic booster scheme with the possibility of providing a discrete odorizable odorant feed by a feedback signal with a gas flow meter, a discharge line It is connected to a flowmeter made with memory and the possibility of instantly determining the flow rate of an odorant, while the flowmeter is connected to the gas pipeline through series-connected inspection dropper, non-return valve and injection nozzle. In addition, the device is additionally equipped with a coarse filter installed in front of the fine filter and has a visual measuring burette and an activated carbon breathing filter, connected by pipelines to a supply tank, under which the catch pan is located.

Description

The utility model relates to automatic control of fluid flow and can be used in odorizing gas, where a proportional flow of odorant into the gas is required.

Known pumping, absorbed, ejection and drip devices for regulating and consuming odorant (A.A. Danilov Gas distribution stations, ed. "Nedra" St. Petersburg, 1997, p.66-75)

However, these devices have a significant drawback, which consists in the violation of proportionality when changing the vapor pressure.

The closest in its technical essence is a device for regulating an odorant (Patent of Russia, No. 2 153 189, MPK7 G05D 7/00, 2000), containing a sensitive element, a pump-dispenser, a supply tank with an odorant and a gas pipeline. However, such a device does not communicate with the atmosphere, operates under pressure, which does not exclude problems with the vapor pressure of the odorant. The metered dose of odorant in proportion to the flow of odorized medium in such a device is at least 10%, which does not allow saving costly odorant, as well as partially odorizing the previously odorized medium to the desired concentration.

The proposed utility model over other known devices has several advantages:

- use without settlement and measuring complex and partial odorization to the desired concentration of previously odorized medium from its own microprocessor:

- dosed odorant injection in proportion to the flow of odorized environment with an accuracy of no more than 3%, which allows to save costly odorant;

- the use of a diaphragm metering pump, characterized by efficiency, durability, reliability and high metering accuracy due to the stable linear pressure head characteristics of the pump, providing a discrete dosed odorant supply by feedback from the odorized gas flow meter;

- automatic replenishment of the supply capacity without stopping the odorization process and protection against overflow of the supply capacity during refueling;

- disposal of odorant vapors when filling the supply tank from the underground (ground) storage of the odorant using a gas ejector;

- the absence of auxiliary or reduced pressure in the installation, which eliminates problems with the vapor pressure of the odorant;

- the presence of a double filter for cleaning odorant from mechanical impurities, which can significantly increase the life of the installation between periods of maintenance;

- the use of a flowmeter with memory for counting the amount of odorant consumed and for transmitting information to the upper level;

- measuring the concentration of odorant in the odorized environment for more accurate dosing using additional equipment of Russian or foreign production:

- operation of installations in various climatic conditions;

- the installation is connected by inserting the boss into the existing pipeline;

- the ability to connect the unit to an existing dropper.

The objective of the utility model is to increase the operational reliability and efficiency of the device while maintaining sufficient accuracy in regulating the flow of odorant into the gas pipeline.

The technical result is achieved by the fact that the device for controlling the flow of odorant containing a flow tank with a level indicator and a fine filter, a metering pump, a flow meter and a gas pipeline, is equipped with a control unit with a gas flow meter to perform the function of automatic control of the metering pump, and the pump Dispenser made according to the diaphragm hydraulic booster scheme with the possibility of providing a discrete odorizable odorant feed by a feedback signal with a gas flow meter, a discharge line It is connected to a flowmeter made with memory and the possibility of instantly determining the flow rate of an odorant, while the flowmeter is connected to the gas pipeline through series-connected inspection dropper, non-return valve and injection nozzle. In addition, the device is additionally equipped with a coarse filter installed in front of the fine filter and has a visual measuring burette and an activated carbon breathing filter, connected by pipelines to a supply tank, under which the catch pan is located.

The figure shows a General schematic diagram of the operation of the device.

The device comprises a supply tank 1 with a level 2 indicator, a double odorant cleaning filter 3 made of coarse and fine filters, a metering pump 4, a metering pump 4 control unit 4 with a gas flow meter 6, a flow meter 7 and a gas pipeline 8.

The supply tank 1 is equipped with a visual measuring burette 9 for torirovany the metering pump 4, a safety valve 10 from overpressure, a breathing filter 11 with activated carbon

for absorption of unpleasant odors and a drain valve 12. The degree of emptying of the supply tank is controlled both by visual measuring burette 9 and by means of a level 2 sensor, the output contacts of which signal through the control unit 5 the minimum (maximum) level in the supply tank 1 by a light and sound signal . In case of emergency pouring of the odorant, a catch pan 13 is provided, the dimensions of which are comparable to the dimensions of the supply tank 1.

Double odorant cleaning filter 3 consists of coarse and fine filters and is designed to protect against ingress of dirt and mechanical impurities into the supply container 1.

The pump-dispenser 4 provides a discrete metered supply of odorant by feedback signal from the meter 6 flow odorizable gas and is the main actuator of the device.

Thanks to the double cleaning filter 3, a clean, odorized product circulates in the system, which ensures the wear resistance of the working valves of the metering pump head 4.

The control unit 5 with a gas meter 6 is designed to perform the function of automatic control of the metering pump 4.

To confirm the normal functioning of the pump - dispenser 4, a flow controller 7 is provided, at the outlet of which a control pressure gauge 14 is located. The working pressure of the pumped liquid is monitored on the working scale of pressure gauge 14. The flow meter 7 is made with memory for counting the amount of consumed odorant (instant or daily) and for transmitting information to the upper level. It is connected to the gas pipeline 8 through an inspection dropper 15, a check valve 16 and an injection nozzle 17.

The nodes of the device are located on the mounting plate 18, interconnected by pipelines and threaded connections on which the cranes 19-21 and valves 22 are installed.

The device operates as follows.

Before operation of the device, it is necessary to fill the system with an odorant, for which, in the manual mode, operate the pump-dispenser 4 several times until the odorant appears in the inspection dropper 15, then set the necessary dosage (regulator 23) on the metering pump 4 (mm / piston stroke) and turn on the pump in automatic mode. Proportional to the amount of passing gas, the pulses generated by the pulse sensor of the gas flow meter 6 on the AGRS, through the control unit 5, set the stroke for the electromagnet of the diaphragm metering pump 4. At each stroke, the metering pump 4 injects into the gas line through the discharge line through an observation dropper 15, check valve 16 and injection nozzle 17 set amount of odorant (mm).

Thus, in the proposed device, a proportional dilution of gas is carried out by a discrete dosed odorant feed by a metering pump with automatic control from a gas flow meter. This ensures sufficient accuracy in regulating the flow of odorant into the gas pipeline.

The proposed device has a single unit - a metering pump containing moving parts, simple in design, the remaining elements are guest units, which determines its reliability in operation.

Thus, the main goal of the proposed utility model is achieved - improving the reliability, simplicity and manufacturability of the design, while maintaining sufficient accuracy in regulating the flow of odorant into the gas pipeline.

Claims (1)

A device for controlling the flow of an odorant containing a flow tank with a level indicator and a fine filter, a metering pump, a flow meter and a gas pipeline, characterized in that it is equipped with a control unit with a gas flow meter for performing the function of automatically controlling the metering pump, and a metering pump made according to the scheme of the membrane hydraulic booster with the possibility of providing a discrete odorizable odorant feed by a feedback signal with a gas flow meter, the discharge line is connected to the flow made with memory and the ability to instantly determine the flow of odorant, while the flow meter is connected to the gas pipeline through a series of connected inspection dropper, check valve and injection nozzle, in addition, the device is additionally equipped with a coarse filter installed in front of the fine filter, and has a visual measuring a burette and an activated carbon breathing filter, connected by pipelines to a supply tank, under which the catch pan is located.