阅读说明：本技术 一种气液两相涡流管 (Gas-liquid two-phase vortex tube ) 是由 刘业凤 张华� 祁影霞 孙伟 王东亮 于 2019-08-29 设计创作，主要内容包括：本发明公开一种气液两相涡流管,包括：涡流室,设置于管体的内部,用于对工作介质进行降压和加速；进气管道,与涡流室连通,连接于管体的顶部,具有进口,用于工作介质进入涡流室；气液分离结构,设置于涡流室内,用于将工作介质中的液体分离出来；冷端管道,设置于本体的一端,具有用于低温气体流出的冷端出口；热端管道,设置于本体的另一端,具有用于高温气体流出的热端出口；以及液体管道,与涡流室连通,设置于气液分离结构的底部,具有液体出口,其中,气液分离结构为刻于本体内壁的多个条缝形凹槽。本发明的气液两相涡流管能够在保证热端管流场不受影响的情况下,分离出液体,排除液体蒸发吸热加大涡流管的冷热效应。(The invention discloses a gas-liquid two-phase vortex tube, comprising: the vortex chamber is arranged in the pipe body and is used for reducing pressure and accelerating the working medium; the air inlet pipeline is communicated with the vortex chamber, is connected to the top of the pipe body and is provided with an inlet for the working medium to enter the vortex chamber; the gas-liquid separation structure is arranged in the vortex chamber and is used for separating liquid in the working medium; the cold end pipeline is arranged at one end of the body and is provided with a cold end outlet for low-temperature gas to flow out; the hot end pipeline is arranged at the other end of the body and is provided with a hot end outlet for high-temperature gas to flow out; and the liquid pipeline is communicated with the vortex chamber, is arranged at the bottom of the gas-liquid separation structure and is provided with a liquid outlet, wherein the gas-liquid separation structure is a plurality of strip-shaped grooves carved on the inner wall of the body. The gas-liquid two-phase vortex tube can separate liquid under the condition of ensuring that the flow field of the hot end tube is not influenced, and the cold and hot effects of the vortex tube, which are increased by heat absorption of liquid evaporation, are eliminated.)

1. A gas-liquid two-phase vortex tube, comprising:

The vortex chamber is arranged in the pipe body and is used for reducing pressure and accelerating the working medium;

The air inlet pipeline is communicated with the vortex chamber, is connected to the top of the pipe body, and is provided with an inlet for the working medium to enter the vortex chamber;

the gas-liquid separation structure is arranged in the vortex chamber and is used for separating liquid in the working medium;

The cold end pipeline is arranged at one end of the pipe body and is provided with a cold end outlet for low-temperature gas to flow out;

The hot end pipeline is arranged at the other end of the pipe body and is provided with a hot end outlet for high-temperature gas to flow out; and

A liquid pipeline communicated with the vortex chamber, arranged at the bottom of the gas-liquid separation structure and provided with a liquid outlet,

the gas-liquid separation structure is a plurality of slit-shaped grooves engraved on the inner wall of the pipe body.

2. The gas-liquid two-phase vortex tube of claim 1, wherein:

Wherein the liquid outlet is rectangular, circular or flared.

3. The gas-liquid two-phase vortex tube of claim 1, wherein:

Wherein, the strip-shaped grooves are mutually parallel or mutually staggered.

4. The gas-liquid two-phase vortex tube of claim 1, wherein:

Wherein the working medium is a gas-liquid two-phase medium.

Technical Field

The invention relates to a vortex tube, in particular to a gas-liquid two-phase vortex tube.

Background

the vortex tube is a cold-hot separation device which has small volume, simple structure and no moving parts, and has convenient operation and relatively low manufacturing cost. The conventional vortex tube uses compressed air as working medium to separate the compressed air into a cold air flow to generate cold effect, and another hot air flow is discharged. The vortex tube has the working principle and characteristics that high-pressure gas enters from an inlet of the vortex tube, after expansion and pressure reduction, the high-pressure gas almost enters the vortex chamber in a free vortex mode, the boundary angular velocity of the gas flow is very small, the angular velocity of the central point is very large, the gas flow velocity of the inner layer is gradually reduced and the gas flow velocity of the outer layer is gradually increased in the forward flowing process of the gas flow due to the action of viscous force, so that the power is transmitted from the inner layer to the outer layer, the temperature of the gas flow of the inner layer is reduced, the temperature of the gas flow of the outer layer is increased, the vortex effect is called vortex effect, hot gas. The gas applied by the traditional vortex tube has no vapor-liquid phase change and only has two outlets: a cold gas outlet and a hot gas outlet.

in a carbon dioxide transcritical vapor compression refrigeration cycle, a conventional expansion valve throttling process is an isenthalpic process due to large high and low pressure differences, such as: from 120bar down to 30bar, the irreversible losses due to throttling are large. When the vortex tube is used for replacing the traditional expansion valve, the pressure reduction process is close to the isentropic process, the irreversible loss is reduced, and the cycle performance of the refrigeration system is improved. However, in either a carbon dioxide transcritical vapor compression refrigeration cycle or a subcritical vapor compression refrigeration cycle of the conventional freon, the cooled high-pressure gas or liquid enters a vapor-liquid two-phase region after being depressurized by a vortex tube, and the vortex tube is required to separate the vapor phase of the gas into cold gas and hot gas and also separate the liquid phase of the gas from the cold gas and the hot gas. Otherwise, the liquid phase absorbs heat at the hot end of the vortex tube and evaporates, which results in poor cold-heat separation effect of the vapor phase. Therefore, it is very important to design and develop a new type of gas-liquid two-phase vortex tube capable of liquid separation.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a gas-liquid two-phase vortex tube.

the invention provides a gas-liquid two-phase vortex tube, which is characterized by comprising the following components: the vortex chamber is arranged in the pipe body and is used for reducing pressure and accelerating the working medium; the air inlet pipeline is communicated with the vortex chamber, is connected to the top of the pipe body, and is provided with an inlet for the working medium to enter the vortex chamber; the gas-liquid separation structure is arranged in the vortex chamber and is used for separating liquid in the working medium; the cold end pipeline is arranged at one end of the pipe body and is provided with a cold end outlet for low-temperature gas to flow out; the hot end pipeline is arranged at the other end of the pipe body and is provided with a hot end outlet for high-temperature gas to flow out; and the liquid pipeline is communicated with the swirl chamber, is arranged at the bottom of the gas-liquid separation structure and is provided with a liquid outlet, wherein the gas-liquid separation structure is a plurality of slit-shaped grooves carved on the inner wall of the pipe body.

In the gas-liquid two-phase vortex tube provided by the invention, the gas-liquid two-phase vortex tube also has the following characteristics: wherein, the shape of the liquid outlet is rectangle, round or bell mouth shape.

in the gas-liquid two-phase vortex tube provided by the invention, the gas-liquid two-phase vortex tube also has the following characteristics: wherein, the strip-shaped grooves are mutually parallel or mutually staggered.

in the gas-liquid two-phase vortex tube provided by the invention, the gas-liquid two-phase vortex tube also has the following characteristics: wherein, the working medium is a gas-liquid two-phase medium.

Action and Effect of the invention

according to the gas-liquid two-phase vortex tube, because the vortex chamber is arranged in the tube body, the working medium can be depressurized and accelerated; because the air inlet pipeline communicated with the vortex chamber is arranged, the working medium can enter the vortex chamber to be depressurized and accelerated; the gas-liquid separation structure is adopted, so that the working medium can be separated; because have cold junction pipeline, hot junction pipeline and liquid pipeline, so can flow out through different nozzles with the liquid and the gas of separating, can also flow out respectively with the gas of different temperatures.

Therefore, the gas-liquid two-phase vortex tube of the embodiment has a simple structure, is convenient to use, separates liquid under the condition of ensuring that the flow field of the hot end pipeline is not influenced, eliminates the cold and hot effects of the vortex tube caused by heat absorption of liquid evaporation, is particularly suitable for a throttling process related to a gas-liquid two-phase vapor compression refrigeration system and a gas-liquid two-phase chemical petroleum system, and improves the refrigerating capacity and the circulation efficiency in the field of vortex tube refrigeration; in the field of petrochemical gas-liquid separation, the device is convenient to maintain, has no moving parts, and also has potential economic value.

Drawings

FIG. 1 is a schematic structural view of a gas-liquid two-phase vortex tube in an embodiment of the invention;

Fig. 2 is a developed schematic view of a gas-liquid separation structure in a gas-liquid two-phase vortex tube in an embodiment of the invention.

Detailed Description

In order to make the technical means and functions of the present invention easy to understand, the present invention is specifically described below with reference to the embodiments and the accompanying drawings.