CN102967093A - Two-phase flow liquid storage flow stabilizer - Google Patents

Abstract

The invention provides a liquid storage stabilizer for two-phase flow, which comprises a liquid storage tank, an inflow port of refrigerant, an outflow port of refrigerant, and a gas-liquid two-phase distribution pipe inside the liquid storage tank; the liquid storage tank It is a high-pressure resistant sealed container with a heat insulation layer on the outer surface; the two external interfaces of the two-phase flow liquid storage stabilizer are respectively the inflow port of the refrigerant and the outflow port of the refrigerant; the gas-liquid two-phase flow The matching flow pipe is a straight pipe, which is mainly composed of two ports and a return hole located on the gas-liquid two-phase flow pipe; the function of the two-phase flow liquid storage stabilizer is to store the working medium and realize the flow of the working medium. Gas-liquid separation, rationally distribute the flow ratio of liquid working medium and gas working medium in the circulation loop, so as to form a stable two-phase flow of working medium in the circulation loop.

Description

A two-phase flow liquid storage stabilizer

technical field

The invention relates to a liquid storage device, in particular to a two-phase flow liquid storage stabilizer.

Background technique

In compressor refrigeration cycles and heat pipe heat exchange cycles such as refrigeration and cryogenic refrigeration, liquid storage tanks are one of the commonly used refrigeration heat exchange accessories. The traditional liquid storage tank has simple structure and single performance, and only has the function of liquid storage. In actual refrigeration and heat exchange, during the circulation process of the whole system, the refrigerant cannot be stably adjusted according to the demand of the evaporator and condenser of the system to achieve the maximum efficiency of refrigeration and heat exchange. The circulation of the refrigerant in the thermal cycle is a gas-liquid phase change cycle, and the efficiency of refrigeration and heat exchange can be greatly improved. Therefore, it is possible to find a way or equipment that can reasonably distribute the liquid working medium and gas working medium in the circulation loop. It is necessary to adjust the flow ratio to form a stable two-phase flow of the working medium in the circulation loop.

Contents of the invention

The purpose of the present invention is to provide a two-phase flow liquid storage stabilizer to solve the above problems, which can not only store the working medium, realize the gas-liquid separation of the working medium, but also reasonably distribute the liquid working medium and gas working medium in the circulation loop. The flow ratio of the medium is used to form a stable two-phase flow of the working medium in the circulation loop.

The present invention solves technical problem and adopts following technical scheme:

A two-phase flow liquid storage stabilizer, comprising a liquid storage tank, a refrigerant inflow port, a refrigerant outflow port and a gas-liquid two-phase flow pipe located inside the liquid storage tank; the liquid storage tank is an outer surface A high-pressure resistant sealed container with a heat insulation layer; the two external interfaces of the two-phase flow liquid storage stabilizer are respectively the inflow port of the refrigerant and the outflow port of the refrigerant; the gas-liquid two-phase flow pipe is A straight pipe, which is mainly composed of two ports and a return hole located on the gas-liquid two-phase flow pipe; one port of the gas-liquid two-phase flow pipe is connected to the refrigeration unit of the two-phase flow liquid storage stabilizer agent outflow port, and the other port is at the lower part of the liquid level of the liquid refrigerant in the two-phase flow liquid storage stabilizer; The upper part of the liquid surface of the working fluid.

The number of holes in the return hole of the gas-liquid two-phase distribution pipe mentioned above is one hole, or a plurality of holes with different heights. the

The above-mentioned return hole of the gas-liquid two-phase distribution pipe is a return slot along the direction of the pipeline, which replaces the function of multiple return holes distributed along the pipeline conveying direction.

The flow rate of a small amount of gaseous or liquid refrigerant flowing into the above-mentioned reflux holes or reflux slots is controlled by the size and number of apertures or the width and length of gaps, that is, the liquid working medium in the two-phase flow liquid storage stabilizer The height of the surface is used to control the number of holes in the reflow hole or the length of the reflow slot.

Compared with the prior art, the present invention has a simple structure and single performance for the general liquid storage tank, and only has the function of storing liquid. However, through the design of the two-phase flow liquid storage stabilizer, the two-phase flow liquid storage stabilizer can not only Store the working medium to realize the gas-liquid separation of the working medium. At the same time, it can reasonably distribute the flow ratio of the liquid working medium and the gas working medium in the circulation loop to form a stable two-phase flow of the working medium in the circulation loop, which improves the efficiency of refrigeration or replacement. The working efficiency and practicability of the thermal system are improved, and the stability of the entire system cycle is realized.

Description of drawings

Fig. 1 is a schematic structural diagram of a two-phase flow liquid storage stabilizer.

Fig. 2 is a schematic plan view of the return hole and the return slot of the two-phase distribution pipe.

Figure 3 is a schematic diagram of the use of the two-phase flow liquid storage stabilizer.

In the figure: (1) liquid storage tank; (2) refrigerant inflow port of two-phase flow liquid storage stabilizer; (3) refrigerant outflow port of two-phase flow liquid storage stabilizer; (4) gas Liquid two-phase distribution pipe; (41) return hole on gas-liquid two-phase distribution pipe; (42)~(43) two ports of gas-liquid two-phase distribution pipe; (44) return slot; (5) circulation pump; (6) Evaporator; (7) Condenser.

Specific implementation methods :

Below by embodiment and in conjunction with accompanying drawing, do further explanation:

The main structure of the system device involved in the implementation of this embodiment includes the liquid storage tank (1), the refrigerant inflow port (2) of the two-phase flow liquid storage stabilizer, and the refrigerant outflow of the two-phase flow liquid storage stabilizer Port (3), gas-liquid two-phase flow pipe (4), return hole (41) on the gas-liquid two-phase flow pipe, two ports (42)~(43) of the gas-liquid two-phase flow pipe, return slot ( 44), circulation pump (5), evaporator (6), condenser (7) and gas-liquid delivery pipes for communication requirements.

A two-phase flow liquid storage stabilizer as shown in Figure 1, including a liquid storage tank (1), a refrigerant inflow port (2) of the two-phase flow liquid storage stabilizer, a two-phase flow liquid storage stabilizer The outflow port (3) of the refrigerant of the device and the gas-liquid two-phase distribution pipe system (4) located inside the liquid storage tank; the liquid storage tank (1) is a high-pressure resistant sealed container with a heat insulation layer on the outer surface ; The two external ports (2; 3) of the two-phase flow liquid storage stabilizer are respectively the refrigerant inflow port (2) and the refrigerant outflow port (3); the gas-liquid two-phase flow The pipe (4) is a straight pipe mainly composed of two ports (42; 43) and a return hole (41) on the gas-liquid two-phase flow pipe; the gas-liquid two-phase flow pipe (4) One port (43) is connected to the refrigerant outflow port (3) of the two-phase flow liquid storage stabilizer, and the other port (42) is at the liquid level of the liquid refrigerant in the two-phase flow liquid storage stabilizer The lower part; the return hole (41) of the gas-liquid two-phase flow pipe (4) is located above the liquid level of the liquid refrigerant in the two-phase flow liquid storage stabilizer; in this way, the refrigerant flows from the two-phase flow liquid storage stabilizer The inflow port (2) of the refrigerant enters the liquid storage tank (4), and the gas-liquid refrigeration intermediate medium is separated in the liquid storage tank (4) according to their respective physical properties, and then the gas-liquid refrigeration intermediate medium passes through the gas-liquid two-phase flow pipe The role of (4) is to reasonably distribute the flow ratio of the liquid working medium and the gas working medium in the circulation loop, and deliver it to the system circulation through the outflow port (3) of the refrigerant of the two-phase flow liquid storage stabilizer, so that A stable two-phase flow of working medium is formed in the circulation loop.

Embodiment one:

The schematic diagram of the use of the two-phase flow liquid storage stabilizer shown in Figure 3, including the circulating pump (5), evaporator (6), condenser (7), two-phase flow liquid storage stabilizer and connecting pipelines, The circulating pump (5), evaporator (6), condenser (7) and the two-phase flow liquid storage stabilizer are connected in the above sequence through the connecting pipes to form a two-phase flow power heat pipe circulation system , when the two-phase flow power heat pipe circulation system is working, the circulation pump (5) extracts a large amount of liquid refrigerant from the liquid storage tank (1) of the two-phase flow liquid storage stabilizer and the part that passes through the return hole (41) Supplement a small amount of gaseous refrigerant that is stable throughout the cycle and enter the evaporator (6) through the evaporator liquid guide tube. The evaporator (6) is in contact with the high-temperature heat source. The liquid working medium is heated by the high-temperature heat source in the evaporator (6) Evaporate into gas and absorb heat, the gas formed by evaporation and part of the liquid intermediate medium that has not evaporated are mixed with each other in high-speed flow to form a gas-liquid two-phase fluid, which is transported to the condenser (7) through the two-phase flow pipe, and the condenser ( 7) When in contact with a low-temperature heat source, the gaseous working medium is cooled by the low-temperature heat source in the condenser (7) to condense into a liquid and release heat. The liquid working medium formed by condensation enters the two-phase flow storage liquid through the condenser tube In the liquid storage tank (1) of the flow device, it performs gas-liquid separation, and then the gas-liquid cooling intermediate medium passes through the gas-liquid two-phase flow distribution pipe (4), and reasonably distributes the liquid working medium and gas working medium in the circulation loop. Flow ratio, so that a stable two-phase flow of working medium can be formed in the circulation loop of the two-phase flow power heat pipe circulation system, which improves the working efficiency of the whole system.

Claims (4)

1. a two-phase flow liquid storage flow straightener comprises a fluid reservoir (1) and two external-connected ports (2; 3), it is characterized in that, also comprise the gas-liquid two-phase flow pipe (4) that is positioned at fluid reservoir inside; Described fluid reservoir (1) is the high-pressure-resistant sealed container that an outer surface is provided with thermal insulation layer; Two external ports (2 that connect of described two-phase flow liquid storage flow straightener; 3), be respectively the outflow port (3) of inflow port (2) and the cold-producing medium of cold-producing medium; Described gas-liquid two-phase flow pipe (4) is a straight tube, and it is mainly by two ports (42; 43) and the return port (41) that is positioned on the gas-liquid two-phase flow pipe consist of; A port (43) of described gas-liquid two-phase flow pipe (4) is connected in the cold-producing medium outflow port (3) of described two-phase flow liquid storage flow straightener, and its another port (42) is in the liquid level bottom of liquid refrigeration working medium in the two-phase flow liquid storage flow straightener; The return port (41) of described gas-liquid two-phase flow pipe (4) is in the liquid level top of liquid refrigeration working medium in the two-phase flow liquid storage flow straightener.

2. a kind of two-phase flow liquid storage flow straightener according to claim 1 is characterized in that, the quantity of return port (41) mesopore of described gas-liquid two-phase flow pipe (4) is a hole, or highly different a plurality of holes.

3. a kind of two-phase flow liquid storage flow straightener according to claim 1, it is characterized in that, the return port (41) of described gas-liquid two-phase flow pipe (4) be one along the backflow of duct orientation seam (44), it substitutes the effect of a plurality of return ports that distribute along the pipeline throughput direction.

4. according to claim 2 or 3 described a kind of two-phase flow liquid storage flow straighteners, it is characterized in that, the a small amount of gaseous state that flows in described return port (41) or the seam (44) that refluxes or the flow of liquid refrigerant have its pore size and number or gap width and length to control, and namely the liquid refrigerant liquid level is just controlled the length of the number in the hole in the return port or the seam that refluxes in two-phase flow liquid storage flow straightener.

Images