RU2395069C2 - Facility for fluid dose bleeding - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: facility consists of reservoir with dosed fluid, and of intermediate measuring reservoirs with concave walls and rotary tubes installed inside them. The rotary tubes have a drive and can travel in several degrees of freedom. Also an inlet orifice of the rotary tubes can change its level relative to an upper level of fluid in the intermediary measuring reservoir. The facility contains a channel with consumption controls for supply of propellant into the reservoir with dosed fluid, the intermediary measuring reservoirs, a collector for withdrawing dose of fluid via a switch tap and a detector of gas phase at the output from the rotary tubes. The collector of fluid dose withdrawal is divided into individual channels for each intermediary measuring reservoir. Temperature and pressure sensors and fluid sprayers are installed at the output of each channel; amount of propellant is regulated by means of the switch tap upon a signal from the detectors of gas phase.

EFFECT: transition of dosed fluid into new aggregate state for intensification of evaporation or combustion.

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Description

The invention relates to devices that form a volume, pressure, speed, state of aggregation of a liquid sample in a flow of propellant. It can be used in preparative gas chromatography and in the fuel systems of internal combustion engines.

A device for sampling a dose of liquid (1), containing a container with a dosed liquid, placed above an intermediate measuring tank made with concave walls and installed inside it with a rotary tube having a drive and the ability to move in several degrees of freedom. The inlet of the rotary tube can change its level with respect to the upper liquid level in the intermediate measuring tank. The device (1) has a channel for supplying a propellant gas, a channel for supplying a dosed liquid passing through a switch valve located between the container with the dosed liquid and the intermediate measured tank.

The disadvantage of the device (1) is the low productivity, the inability to control the speed and volume of the propellant, the inability to spray the output sample.

A device for selecting a dose of liquid (2), containing a container with a dosed liquid, placed above the intermediate containers. The latter are made with concave walls and with rotary tubes installed inside them. Rotary tubes have a drive and the ability to move in several degrees of freedom. The inlet of the slewing tubes can change its level with respect to the upper liquid level in the intermediate measuring tanks. The device (2) has a channel for supplying a propellant gas and a channel for supplying a liquid dose passing through a switch tap located between the container with the liquid to be dosed and intermediate measuring tanks. The crane switch is controlled by gas phase detectors installed at the outlet of the slewing tubes. The device (2) ensures the continuity of the flow of the dosed liquid and the reduction of the dosing error.

The disadvantage of the device (2) is the low rate of filling of the liquid intermediate measuring tanks, which limits the rate of dispensing of liquid samples, and therefore the performance of the device.

A device for selecting a dose of liquid (3), containing a container with a dosed liquid, intermediate measuring tanks made with concave walls and mounted inside them with rotary tubes having a drive and the ability to move in several degrees of freedom, while the inlet of the rotary tubes can change its level with respect to the upper liquid level in the intermediate measured tank, a channel with flow controllers for supplying the propellant to the tank with the dosed liquid and intermediate measured capacities, a collector for outputting a dose of liquid through a tap-switch, a gas phase detector at the outlet of the rotary tubes. Device (3) is a prototype of the proposed.

The disadvantage of the prototype is the inability to transfer a liquid sample into a gas-liquid mixture.

The aim of the invention is the transfer of the dosed liquid to a new state of aggregation to intensify the processes of its evaporation or combustion.

This goal is achieved by the fact that in the device for selecting a dose of liquid containing a container with a dosed liquid, intermediate measuring containers made with concave walls and mounted inside them with rotary tubes having a drive and the ability to move in several degrees of freedom, while the inlet is rotary tubes can change its level with respect to the upper liquid level in the intermediate measuring tank, a channel with flow controllers for supplying the propellant to the tank with dosed liquid and intermediate measuring tanks, a liquid dose output manifold through a tap-switch, a gas phase detector at the outlet of the rotary tubes, a liquid dose output manifold is divided into individual channels for each intermediate measuring tank, with temperature, pressure, and liquid sprayers, and the amount of propellant is set by a switch tap according to the signal of the gas phase detectors.

The drawing shows a schematic diagram of a device.

The device contains a container 1 with a dosed liquid, channels 2, 16 for supplying a propellant, a crane switch 3, intermediate measuring tanks 4, 8, rotary tubes 5, 9, dose rate indicators 6, 12, drives 7, 13, output channels metering liquid and propellant 14, 25, a fluid dose channel 15, detectors for propellant 10, 11, flow regulators of propellant 17, 18, check valves 19, 20, strain gauge pressure sensors 21, 22, temperature sensors in in the form of resistance thermometers 26, 27, centrifugal nozzles 23, 24.

The device operates as follows. The atomizer bodies 23, 24 with pressure sensors 21, 22, temperature sensors 26, 27 and check valves 19, 20 are connected, for example, to chromatograph evaporators having proportional temperature controllers. On the intermediate tanks 4, 8, according to the dose indicator 6, 12, the dose value is set by the drive 7, 13 of the rotary tubes 5, 9. The flow regulator 17, 18 sets the flow rate of the propellant, and on the gas phase detectors 10, 11 - the response of the switch tap, which provides a sufficient amount of gas propellant to mix the sprayed liquid. In the initial position of the switch valve 3, the tank 1 through the output channel 15 is connected to the output of the rotary tube 5 of the intermediate measuring tank 4, which at the same time is connected to the atmosphere, and channel 2 through the flow regulator 18 is connected to the upper level of the intermediate measuring tank 8. Occurs filling the dosing liquid with an intermediate measuring tank 4 at a speed set by the flow regulator 17 in the channel 16, and displacing the volume of liquid located above the rotary tube 9 through the rotary tube 9, gas phase detector s 11, the switch-switch 3, channel 14, the non-return valve 19, the pressure sensor 21, the temperature sensor 26, the sprayer 23 at the speed set by the flow regulator 18 in the channel 2. Upon reaching the set signal level of the gas phase detector 11, the switch-3 switch changes your position. The tank 1 through the output channel 15 is connected to the output of the rotary tube 9 of the intermediate measuring tank 8, which at the same time is connected to the atmosphere, and the channel 2 through the flow regulator 18 is connected to the upper level of the intermediate measuring tank 4. The metering liquid is filled with the intermediate measuring tank 8 with the speed set by the flow regulator 17 in the channel 16, and the displacement of the liquid volume located above the rotary tube 5 through the rotary tube 5, the gas phase detector 10, the tap switch 3, channel 25, reverse to valve 20, pressure sensor 22, temperature sensor 27, spray gun 24 at the speed set by the flow regulator 18 in channel 2. Upon reaching the set signal level of the gas phase detector 10, the tap switch 3 returns to its original position and the device operation cycle starts again. During the operating time of the device, temperature sensors 26, 27 give a signal proportional to the resistance of the temperature in analog or digital form for remote monitoring. The pressure sensors 21, 22 generate a signal of the dependence of pressure on time during evaporation of a dose of liquid also for remote monitoring, characterizing the reproducibility of the readings, characterizing the stability of the parameters of the entire system. This makes it possible to quickly influence the quality of the device.

Information sources

1. RF patent No. 2016389, IPC 5 G01 N1 / 10, 1990

2. RF patent No. 2223474, IPC 7 G01 N1 / 10, 2002

3. RF patent No. 2334209, IPC G01 N1 / 10 (2006/01) - prototype.

Claims (1)

A device for selecting a dose of liquid containing a container with a dosed liquid, intermediate measuring containers made with concave walls and mounted inside them with rotary tubes having a drive and the ability to move in several degrees of freedom, while the inlet of the rotary tubes can change its level with respect to to the upper liquid level in the intermediate measuring tank, a channel with flow controllers for supplying a propellant to the tank with dosed liquid and intermediate measuring tanks, count a liquid dose output vector through a switch-tap, a gas phase detector at the exit of the rotary tubes, characterized in that the liquid dose output collector is divided into individual channels for each intermediate measuring tank, with temperature, pressure and spray sensors installed at the output of each channel liquid, and the amount of propellant is set by a switch tap according to the signal of the gas phase detectors.

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