CN210721156U - Multi-component gas simulation mixing system - Google Patents

Abstract

The utility model discloses a multi-component gas simulation mixing system, which belongs to the technical field of gas simulation mixing. After each component gas enters the rotary mixer separately, it is fully and uniformly mixed in the annular gas mixing chamber, and then water vapor is added by the water vapor generation unit. Gas, connected to the required system. The system has a reasonable design, improves the uniformity of multi-component gas concentration and flow rate distribution, and can achieve precise adjustment and control of moisture. It has a wide range of applications, simple operation and high efficiency.

Description

A Multicomponent Gas Simulation Mixing System

technical field

The utility model belongs to the technical field of gas simulation mixing, in particular to a multi-component gas simulation mixing system.

Background technique

Multi-component gas simulated mixing is widely used in laboratory research, industrial scale-up test and actual industrial production. The simulated mixing effect directly affects the test conclusion and industrial production, and its important role is obvious. The common gas simulation mixing mainly adopts special geometric shapes to make the fluid flow laterally or disorderly to achieve the purpose of mixing. The concentration distribution and flow velocity distribution of the simulated mixing gas are the key indicators to evaluate the simulated mixing effect.

In scientific experiments and scale-up experiments, general multi-component gas simulation mixing is relatively easy to achieve, but when there are many components or special components, multi-component gas simulation mixing brings difficulties to people. Some gas simulation methods have some problems and deficiencies. 1. When more than four components are simulated, the uniformity of the gas concentration distribution is poor, resulting in unstable properties of the simulated mixed gas; 2. The flow rate deviation is large, and the mixing ratio of the gas components fluctuates greatly; 3. When moisture is one of the component gases, There are problems such as difficulty in adding water and difficult control of water vapor concentration; 4. There are problems such as unstable multi-component gas pressure, large temperature fluctuation, and difficult adjustment of single-component.

SUMMARY OF THE INVENTION

In order to solve the above problems, the purpose of the present utility model is to provide a multi-component gas simulation mixing system, which has a reasonable design, improves the uniformity of the multi-component gas concentration and flow rate distribution, and can realize precise adjustment and control of moisture, and has a wide range of applications. , Simple operation and high efficiency.

The utility model is realized through the following technical solutions:

The utility model discloses a multi-component gas simulation mixing system, which comprises an air mixing unit, a water vapor generating unit and a monitoring unit which are connected in sequence through the main pipeline of the system, and an air intake unit connected with the air mixing unit;

The air intake unit includes several air intake pipelines;

The air mixing unit includes a rotary mixer and a central cylinder; the upper part of the rotary mixer is a cylindrical cylinder, and the lower part is a conical cylinder; the inlet end of the central cylinder is located inside the cylindrical cylinder and communicates with the interior of the cylindrical cylinder, and the outlet end of the central cylinder is connected to the main pipeline of the system Connection; an annular air mixing chamber is formed between the central tube and the cylindrical tube, all the air intake pipes are connected with the cylindrical tube, and the air intake pipelines are arranged in the tangential direction of the cylindrical tube;

The water vapor generating unit includes a heating device and a water storage device, the heating device is connected with the water storage device, the water storage device is connected with a weight measuring device for measuring the water volume of the water storage device, and the water storage device is connected with the main pipeline of the system through a connecting pipe;

The monitoring unit is used to monitor the relevant parameters of the multi-component gas;

A preheater is arranged between the air mixing unit and the water vapor generating unit, and a heater is arranged between the water vapor generating unit and the monitoring unit.

Preferably, the air intake unit includes a plurality of air storage devices, the air storage devices are connected to the cylinder through an air intake pipeline, and the air intake pipeline is provided with a switch, a flow setter and an air intake regulating valve in sequence.

Preferably, the central barrel is arranged concentrically with the cylindrical barrel.

Preferably, the length of the central barrel inside the cylindrical barrel is adjustable.

Preferably, a mixed gas return line is connected between the outlet end of the central cylinder and the lower part of the rotary mixer, and a mixed gas return valve is provided on the mixed gas return line.

Preferably, a water vapor return line is connected between the connecting pipe and the water storage device, and a water vapor return valve is provided on the water vapor return line.

Preferably, the connecting pipe is a fluororubber hose.

Preferably, the preheater is connected with a first temperature controller, and the heater is connected with a second temperature controller.

Preferably, the outer wall of the main system pipeline is provided with a thermal insulation layer, and the inner wall is provided with a hydrophobic layer.

Preferably, the monitoring unit includes a pressure gauge and a flowmeter, and the flowmeter has real-time flow and cumulative flow monitoring functions.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model discloses a multi-component gas simulating mixing system. After the multi-component gas enters the gas mixing unit through the air inlet unit for mixing, water vapor is added from the water vapor generating unit, and the multi-component gas and the After the relevant parameters of water vapor are obtained, the simulated mixed gas is obtained and connected to the required system. Each component gas enters the rotary mixer separately, and the parameters of each component gas are controllable. After each component gas enters the rotary mixer along the tangential direction, after mixing in the annular gas mixing chamber, due to the smaller space of the conical cylinder, each component gas can be mixed efficiently and evenly, avoiding the deviation of the concentration distribution of the mixed gas. The water vapor generation unit can accurately control the temperature and concentration of water vapor through the temperature control of the heating device and the quality change of the water volume, and ensure the accurate addition of water in the multi-component simulated mixed gas. The preheater and heater can control the temperature of the mixed gas before and after the addition of water vapor to avoid condensation of water vapor. The system has a reasonable design, improves the uniformity of multi-component gas concentration and flow rate distribution, and can achieve precise adjustment and control of moisture. It has a wide range of applications, simple operation and high efficiency.

Further, each component gas in the intake unit can pass through the flow rate setter and the intake adjustment valve, which can further improve the control accuracy and improve the simulation result.

Further, the central cylinder and the cylindrical cylinder are arranged concentrically, so that the two form a uniform annular gas mixing chamber, which further improves the mixing uniformity of the multi-component gas and reduces the concentration distribution deviation.

Further, the length of the central cylinder inside the cylindrical cylinder can be adjusted, and the size of the annular air mixing chamber can be adjusted according to the distribution range of the actual air intake pipeline, so as to make the mixing more efficient.

Further, the mixed gas return line and the mixed gas return valve can adjust the excess mixed gas amount and ensure the stable output of the system.

Further, the water vapor return line and the water vapor return valve can control the backflow of excess water vapor, realize the stable addition of steam to the main line of the system, and the addition amount is more precise and controllable.

Further, the connecting pipe adopts fluorine rubber hose, which minimizes the concentration fluctuation of the output water vapor, and is stable and reliable.

Further, the first thermostat can accurately control the heating temperature of the preheater and the temperature of the mixed gas in real time; the second thermostat can accurately control the heating temperature of the heater in real time to ensure that the temperature of the output gas of the system is stable.

Further, the outer wall of the system main pipeline is provided with a thermal insulation layer to reduce the temperature change range of the mixed gas; the inner wall is provided with a hydrophobic layer to prevent condensation loss of water vapor.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

In the figure: 1 is the gas storage device, 2 is the switch, 3 is the flow setter, 4 is the intake air regulating valve, 5 is the rotary mixer, 6 is the center cylinder, 7 is the first control valve, and 8 is the mixed gas return Valve, 9 is an on-off valve, 10 is a preheater, 11 is a first thermostat, 12 is a heating device, 13 is a water vapor return valve, 14 is a connecting pipe, 15 is a water vapor regulating valve, 16 is a heater, and 17 is a valve. The second thermostat, 18 is a second control valve, 19 is a pressure gauge, and 20 is a flow meter.

Detailed ways

The present utility model is described in further detail below in conjunction with the accompanying drawings, and its content is to explain rather than limit the present utility model:

As shown in Figure 1, it is a multi-component gas simulation mixing system of the present utility model, comprising an air mixing unit, a water vapor generation unit and a monitoring unit connected in turn through the main pipeline of the system, and an air intake unit connected with the air mixing unit;

The air intake unit includes a plurality of air storage devices 1, and the air storage devices 1 are respectively connected with the cylinder through the intake pipeline, and the intake pipeline is sequentially provided with a switch 2, a flow setter 3 and an intake regulating valve 4.

The air mixing unit includes a rotary mixer 5 and a central cylinder 6; the upper part of the rotary mixer 5 is a cylindrical cylinder, and the lower part is a conical cylinder; the inlet end of the central cylinder 6 is located inside the cylindrical cylinder and communicates with the interior of the cylindrical cylinder, preferably, the central cylinder 6. The length inside the cylindrical barrel is adjustable, and the central barrel 6 is arranged concentrically with the cylindrical barrel. An annular air-mixing chamber is formed between the central tube 6 and the cylindrical tube, all the air inlet pipelines are connected with the cylindrical tube, and the air intake pipelines are arranged in the tangential direction of the cylindrical tube. The outlet end of the central cylinder 6 is connected with the main system pipeline, and a mixed gas return pipeline is connected between the outlet end of the central cylinder 6 and the lower part of the rotary mixer 5, and a mixed gas return valve 8 is arranged on the mixed gas return pipeline.

The water vapor generating unit includes a heating device 12 and a water storage device, the heating device 12 is connected with the water storage device, and the water storage device is connected with a weighing device for measuring the water volume of the water storage device, and the weighing device can use an electronic scale or a weight sensor; water storage device The device is connected to the main system pipeline through a connecting pipe 14, which is provided with a water vapor regulating valve 15; a water vapor return line is also connected between the connecting pipe 14 and the water storage device, and a water vapor return valve 13 is provided on the water vapor return line. The connecting pipe 14 is preferably a fluororubber hose.

A preheater 10 is arranged between the air mixing unit and the water vapor generating unit, and the preheater 10 is connected with a first temperature controller 11 . A heater 16 is provided between the water vapor generating unit and the monitoring unit, and a second temperature controller 17 is connected to the heater 16 . A second control valve 18 is provided between the second thermostat 17 and the monitoring unit.

The monitoring unit includes a pressure gauge 19 and a flowmeter 20. The flowmeter 20 has real-time flow and cumulative flow monitoring functions.

The outer wall of the system main line is provided with an insulating layer, such as asbestos, polyurethane foam, etc.; the inner wall of the system main line is provided with a hydrophobic layer, such as fluoropolymer (PTFE, fluorinated polyethylene, fluorocarbon wax), polymer melt polymer ( polyolefin, polycarbonate, polyamide, polyacrylonitrile), etc.

The working process of the present utility model is explained below by taking the operation method of the two functions of the multi-component gas simulation mixing system of the present utility model as an example:

Function 1

The system generates a multi-component simulated gas without moisture: each component gas is set to a predetermined concentration in the flow setting device 3, and the switch 2, the intake adjustment valve 4 and the first control valve 7, the second control valve 18 and the water vapor are turned on. The regulating valve 15 is closed, the mixed gas return valve 8 is adjusted, the temperature of the first thermostat 11 and the second thermostat 12 are set, the preheater 10 and the heater 16 are turned on, the second control valve 18 is opened and the flow rate is set , open the switch valve 9, when the real-time flow reading of the flow meter 20 is stable, record the reading of the pressure gauge 19 and the reading of the second temperature controller 12, and simulate the mixed gas connection to the required system.

Feature 2

The system generates a multi-component simulated gas containing moisture: turn on the heating device 12, adjust the amount of water added by heating temperature and mass change rate, open the water vapor return valve 13, set the temperature of the second thermostat 12, and open the water vapor regulating valve 15. and the second control valve 18, until the real-time flow reading of the flow meter 20 stabilizes. Set the predetermined concentration of each component gas in the flow setting device 3, open the switch 2, the intake adjustment valve 4 and the first control valve 7, close the second control valve 18, adjust the mixed gas return valve 8, and set the first The temperature of the thermostat 11 and the second thermostat 12, turn on the preheater 10 and the heater 16, turn on the second control valve 18 and set the flow, open the switch valve 9, when the real-time flow reading of the flow meter 20 is stable After that, record the reading of the pressure gauge 19 and the reading of the second thermostat 12 to simulate the connection of the mixed gas to the required system.

The above is only a part of the implementation of the present invention, and the specific operations can be changed according to the situation on site. It must be understood that those skilled in the art can design various other improvements and embodiments, but the drawings and Changes in the position of the relevant device and its parts described in the claims shall fall within the protection scope of the present invention.

Claims (10)

1. a multi-component gas simulation mixing system, is characterized in that, comprises the air mixing unit, the water vapor generation unit and the monitoring unit connected successively by the system main pipeline, and the air inlet unit that is connected with the air mixing unit; The air intake unit includes several air intake pipelines; The air mixing unit comprises a rotary mixer (5) and a central cylinder (6); the upper part of the rotary mixer (5) is a cylindrical cylinder, and the lower part is a conical cylinder; the inlet end of the central cylinder (6) is located inside the cylindrical cylinder and is connected with the cylindrical cylinder. Internally communicated, the outlet end of the central tube (6) is connected with the main system pipeline; an annular air mixing chamber is formed between the central tube (6) and the cylindrical tube, all the air intake pipelines are connected with the cylindrical tube, and the air intake pipelines are arranged in the cylindrical tube. the tangential direction of the barrel; The water vapor generating unit comprises a heating device (12) and a water storage device, the heating device (12) is connected with the water storage device, the water storage device is connected with a weighing device for measuring the water volume of the water storage device, and the water storage device is connected through a connecting pipe (14) Connect to the main system of the system; The monitoring unit is used to monitor the relevant parameters of the multi-component gas; A preheater (10) is arranged between the air mixing unit and the water vapor generating unit, and a heater (16) is arranged between the water vapor generating unit and the monitoring unit. 2. The multi-component gas simulation mixing system according to claim 1, wherein the air intake unit comprises several air storage devices (1), and the air storage device (1) is connected to the cylinder through an air intake pipeline, and the air intake pipe A switch (2), a flow setter (3) and an air intake regulating valve (4) are arranged on the road in sequence. 3. The multi-component gas simulation mixing system according to claim 1, characterized in that the central cylinder (6) and the cylindrical cylinder are arranged concentrically. 4. The multi-component gas simulation mixing system according to claim 1, wherein the length of the central cylinder (6) inside the cylindrical cylinder is adjustable. 5. The multi-component gas simulation mixing system according to claim 1, wherein a mixed gas return line is connected between the outlet end of the central cylinder (6) and the lower part of the rotary mixer (5), and the mixed gas returns A mixed gas return valve (8) is arranged on the pipeline. 6. The multi-component gas simulation mixing system according to claim 1, wherein a water vapor return line is connected between the connecting pipe (14) and the water storage device, and a water vapor return valve (13) is provided on the water vapor return line. ). 7 . The multi-component gas simulation mixing system according to claim 1 , wherein the connecting pipe ( 14 ) is a fluorine rubber hose. 8 . 8. The multi-component gas simulation mixing system according to claim 1, wherein the preheater (10) is connected with a first temperature controller (11), and the heater (16) is connected with a second temperature controller (17). 9 . The multi-component gas simulation mixing system according to claim 1 , wherein the outer wall of the main pipeline of the system is provided with a thermal insulation layer, and the inner wall is provided with a hydrophobic layer. 10 . 10. The multi-component gas simulation mixing system according to claim 1, wherein the monitoring unit comprises a pressure gauge (19) and a flowmeter (20), and the flowmeter (20) has real-time flow and cumulative flow monitoring functions.

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