CN104689736A - Gas-water mixer with gas transmission channel for small-hole gas transmission - Google Patents

Abstract

An air-water mixer with a small hole in the air-transport channel is characterized in that the air-water mixer is composed of a water inlet, an air inlet, an outlet, and a cylinder body, wherein the cylinder body is divided into an air transmission section, a packing section, There are four parts, the transition section and the honeycomb section, and the joints of the four parts are provided with support pads; the gas delivery pipe is evenly arranged with air delivery holes, the packing section is filled with corrugated metal orifice packing, and the honeycomb section is filled with metal honeycomb. The cylinder is installed vertically, and the lengths of the gas transmission section, packing section, transition section and honeycomb section are equal. The pressure range of the experiment is 0.1-3Mpa, and the temperature range is 10 ⁰ C-230 ⁰ C.

Description

A kind of gas-water mixer with small holes for gas transmission channel

technical field

The invention relates to a gas-water mixer which comprehensively utilizes uniform gas transmission of small holes, corrugated packing of metal orifice plate and metal honeycomb.

Background technique

Gas-liquid two-phase flow is a new discipline developed in recent decades. It has important applications in thermal energy, power, chemical industry, nuclear energy, refrigeration, petroleum, metallurgy, aerospace, impeller machinery, electronic technology cooling and other fields. Two-phase flow experiments are an important part of researching, designing, and operating these industrial devices.

In gas-liquid two-phase flow experiments, air and water are commonly used as experimental media. Whether the air and water are mixed uniformly is the core technology for the success of the experiment.

The gas-water mixing device is used in the experimental circuit of gas-water two-phase flow, so that the gas-water can be fully mixed. The muddying device used in the existing gas-water two-phase flow circuit often adopts a structure such as a perforated plate, a pebble bed or a corrugated steel plate. The orifice plate structure has high resistance and is prone to cavitation, which causes the circuit to vibrate, and the gas-water mixing is not uniform enough, which affects the experimental results. Although the pebble bed or corrugated steel structure has a good mixing effect, it has high quality and high cost, and can be used in small circuits, but rarely used in large circuits. At the same time, the test range of these air-water mixing devices is limited and cannot fully meet the experimental requirements. In summary, it is of great significance to the development and improvement of the air-water mixer device.

A gas-water mixer with small holes in the gas transmission channel designed by the present invention is a special equipment for gas-water two-phase flow experiments in the gas-water two-phase flow circuit. It can not only fully stir the gas-water, but also guide Straight into the test section of the fluid, and reduce resistance as much as possible.

Contents of the invention

The present invention is aimed at the disadvantage of uneven mixing of the mixing device on the current two-phase flow circuit. For the first time, the metal orifice plate corrugated packing and the metal honeycomb are combined and used for air-water mixing to strengthen the uniform mixing of air and water. At the same time, for the first time, the air pipe with small air holes on the side wall is inserted into the mixing device to make the gas flow evenly and strengthen the mixing of air and water.

The main components of the gas-water mixer with small hole gas transmission in the gas transmission channel are composed of a water inlet, an air inlet, an outlet and a cylinder body. The barrel of the mixer is cylindrical, and is divided into four sections evenly along the length direction, which are the gas transmission section, the packing section, the transition section and the honeycomb section. The orifice plate corrugated filler and the metal honeycomb are installed in the cylinder, and the gas pipeline with small holes on the side wall enters the gas transmission section of the container from below, and at the same time, water enters the cylinder from bottom to top, and in the gas transmission section, it is in contact with the gas. mix. Considering the influence of gravity on the gas-liquid two-phase, in order to make the air and water mix uniformly, the flow direction of the fluid in the container is vertical flow. After the gas-water mixture is initially mixed in the gas transmission section, it enters the orifice corrugated packing for further mixing. Then enter the metal honeycomb guide.

Metal orifice corrugated packing and metal honeycomb are easy to process, easy to obtain and low in cost. The entire gas-water mixer has a simple structure and is easy to install.

Description of drawings

  This manual includes 4 drawings: Figure 1 is a plan view of the air-water mixer, Figure 2 is a cross-sectional view of the gas delivery port of the air-water mixer, Figure 3 is a top view of the air-water mixer, and Figure 4 is a cylinder of the air-water mixer Sectional view of the body. In the figure: 1. water inlet, 2. outlet, 3. cylinder, 4. air inlet, 5. air pipe, 6. air hole, 7. air section, 8. packing section, 9. transition section, 10. Honeycomb segment, 11. Metal orifice corrugated filler, 12. Support pad, 13. Metal honeycomb.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. As shown in the figure, an air-water mixer with small holes in the air-transport channel is characterized in that the air-water mixer is composed of a water inlet 1, an air inlet 4, an outlet 2 and a cylinder 3, wherein the cylinder 3 is divided into four parts: gas transmission section 5, packing section 8, transition section 9 and honeycomb section 10. Support pads 12 are provided at the joints of the four parts; Filled with corrugated packing 11 of metal orifice plate, the honeycomb segment 10 is filled with metal honeycomb 13 . The cylinder body 3 is vertically installed, and the gas transmission section 7, the packing section 8, the transition section 9, and the honeycomb section 10 are all equal in length.

Water enters the mixer from below, and at the same time, compressed air is injected into the water through the small hole on the side wall of the input pipe. After the two are mixed, they enter the metal orifice corrugated packing and are fully mixed, and then the air-water mixture enters the metal through the transition section. The honeycomb is further homogenized and straightened. The pressure range of the experiment is 0.1-3Mpa, and the temperature range is 10 ⁰ C-230 ⁰ C.

Claims (2)

1. An air-water mixer with a small hole in the air transmission channel, characterized in that the air-water mixer consists of a water inlet (1), an air inlet (4), an outlet (2) and a cylinder (3) The cylinder body (3) is divided into four parts: gas transmission section (5), packing section (8), transition section (9) and honeycomb section (10), and support pads (12) are provided at the joints of the four parts. Air delivery holes (6) are evenly arranged on the air delivery pipe (5), metal orifice plate corrugated packing (11) is filled in the packing section (8), and metal honeycomb (13) is filled in the honeycomb section (10). 2. The air-water mixer with small holes for gas transmission according to claim 1, characterized in that the cylinder (3) is vertically installed, the gas transmission section (7), the packing section (8), and the transition section (9), honeycomb segment (10), each segment length is equal.