Gas-liquid separator for airborne refrigerating system

Abstract

The invention discloses a gas-liquid separator for an airborne refrigerating system, and belongs to the technical field of gas-liquid separators. Comprising a gas-liquid two-phase inlet (1), a gas-phase outlet (2), a gas-liquid separation baffle (3), a barrel (4), a spiral coil (5), a liquid leakage hole (6), a fixed liquid outlet pipe (7), a rotating mechanism (8) and a movable liquid outlet pipe (9). The device has the advantages that gas-liquid two-phase separation can be achieved without being affected by equivalent gravity, refrigeration performance reduction caused by refrigerant gas-liquid mixed flowing is avoided, and the stability and adaptability of an airborne refrigeration system are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas-liquid separators, and particularly relates to a gas-liquid separator for an airborne refrigeration system, which is not restricted by overload and attitude. Background Art

[0002] With the continuous development of aviation technology, airborne refrigeration systems play a crucial role in ensuring flight safety, improving flight performance, and maintaining the normal operation of airborne equipment. Many electronic, optical, and other equipment have increasingly strict requirements for temperature control. The gas-liquid separator in self-cascade refrigeration systems is used to separate gas-liquid mixed refrigerants, and the effective separation of gas and liquid is related to the refrigeration effect in the evaporator. Therefore, the optimization of the performance and function of the gas-liquid separator is particularly important. At present, gas-liquid separators mainly use fixed gas-liquid two-phase outlets, so the tank body must be placed in a fixed attitude. However, when the aircraft undergoes rapid overload changes or changes in attitude angles, the equivalent gravity of common gas-liquid separators will change, resulting in the inability to achieve gas-liquid two-phase separation. Summary of the Invention

[0003] The purpose of the present invention is to provide a gas-liquid separator for an airborne refrigeration system, which solves the problems that the equivalent gravity of common gas-liquid separators will change, resulting in the inability to achieve gas-liquid two-phase separation, etc.; it realizes that the gas-liquid separator of the refrigeration system of the aircraft is not restricted by overload and attitude, that is, good gas-liquid separation can still be achieved under variable equivalent gravity.

[0004] The present invention includes a gas-liquid two-phase inlet 1, a gas outlet 2, a gas-liquid separation baffle 3, a cylinder body 4, a spiral coil 5, a liquid leakage hole 6, a fixed liquid outlet pipe 7, a rotating mechanism 8, and a movable liquid outlet pipe 9. The upper part of the cylinder body 4 is provided with a gas-liquid two-phase inlet 1 and a gas outlet 2. The middle of the interior of the cylinder body 1 is provided with a spiral coil 5. The upper port of the spiral coil 5 is connected to the gas-liquid two-phase inlet 1. Liquid leakage holes 6 for discharging the liquid phase are opened on the outer side wall of the spiral coil 5. An opening is provided at the tail of the spiral coil 5, and the outlet direction is parallel to the tangential direction of the cylinder body 4 to ensure that the gas-liquid two-phase continues to rotate tangentially along the cylinder body 4 without generating a perpendicular impact on the cylinder body; a gas-liquid separation baffle 3 is provided at the lower end of the gas outlet 2 to prevent the liquid phase from flowing out of the gas outlet; a fixed liquid outlet pipe 7 is provided in the middle of the cylinder body 4, a rotating mechanism 8 is arranged on the fixed liquid outlet pipe 7, the rotating mechanism 8 is connected to the movable liquid outlet pipe 9, and the movable liquid outlet pipe 9 can rotate freely by 360°. The present invention can achieve gas-liquid separation under variable overload and attitude.

[0005] Preferably, the liquid leakage holes 6 are evenly arranged on the outer middle side wall of the spiral coil 5, and the orifices are opened in the horizontal direction or at a certain angle towards the fixed liquid outlet pipe 7.

[0006] Advantages of the present invention: It can achieve gas-liquid two-phase separation without being affected by the equivalent gravity, avoid the decline in refrigeration performance caused by the mixed flow of refrigerant gas and liquid, and improve the stability and adaptability of the airborne refrigeration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0008] Figure 1 It is a structural diagram of a gas-liquid separator for an airborne refrigeration system in a first preferred embodiment of the present invention.

[0009] Figure 2 It is a top view structural diagram of the gas-liquid separator in a first preferred embodiment of the present invention.

[0010] Figure 3 It is a structural diagram of the gas-liquid separator in an inverted state in a first preferred embodiment of the present invention.

[0011] Figure 4 It is a structural diagram of a gas-liquid separator for an airborne refrigeration system in a second preferred embodiment of the present invention.

[0012] In the figure: gas-liquid two-phase inlet 1, gas phase outlet 2, gas-liquid separation baffle 3, cylinder body 4, spiral coil 5, liquid leakage hole 6, fixed liquid outlet pipe 7, rotating mechanism 8, movable liquid outlet pipe 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following will further describe the present invention in detail with reference to the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0014] Figure 1 It is a structural diagram of a gas-liquid separator for an airborne refrigeration system in a first preferred embodiment of the present invention. As Figure 1As shown, a gas-liquid separator for an onboard refrigeration system of this embodiment includes a gas-liquid two-phase inlet 1, a gas phase outlet 2, a gas-liquid separation baffle 3, a cylinder 4, a spiral coil 5, a leakage hole 6, a fixed liquid outlet pipe 7, a rotating mechanism 8, and a movable liquid outlet pipe 9. In actual operation, the gas-liquid two-phase flow enters the spiral coil 5 from the inlet 1 at a certain initial velocity, and flows along the spiral coil 5, generating centrifugal force. Under the action of the centrifugal force, the liquid phase with a relatively large density will gather on the outer wall of the spiral coil 5, and then flow out through the leakage hole 6 horizontal to the opening direction and enter the cylinder 4, and generate a velocity component in the direction of the fixed liquid outlet pipe 7 under the action of equivalent gravity. The movable liquid outlet pipe 9 rotates under the action of the rotating mechanism 8 to ensure that the liquid suction port is below the liquid level of the liquid phase. The liquid is sucked into the movable liquid outlet pipe 9 and flows out from the fixed liquid outlet pipe 7. The gas phase fluid has a small centrifugal force due to its low density, and mainly flows out from the tail outlet of the spiral coil 5, gathers above the center of the cylinder 4, passes through the gap in the middle of the gas-liquid separation baffle 3, and flows out from the gas phase outlet 2.

[0015] like Figure 2 As shown, when the remaining two-phase flow flows out from the tail of the spiral coil 5 at a certain initial velocity, since the outlet direction of the tail of the spiral coil 5 is parallel to the tangential direction of the cylinder 4, it will continue to rotate along the tangential direction of the cylinder 4 without generating a significant vertical impact with the cylinder to destroy the flow direction, wherein the remaining liquid phase fluid is thrown to the cylinder wall because the centrifugal force it is subjected to is much greater than that of the gas phase fluid, and under the dual action of equivalent gravity and centrifugal force, the gas phase and liquid phase fluids are further separated.

[0016] like Figure 3 As shown, when the equivalent gravity of the aircraft is in the opposite direction, the movable liquid outlet pipe 9 rotates under the action of the rotating structure 8 to ensure that the liquid suction port is below the liquid surface of the liquid phase. Since the liquid phase fluid flowing out of the leakage hole 6 has only a horizontal initial velocity, the direction of the equivalent gravity is opposite at this time, and the flow direction is toward the movable liquid outlet pipe 9. The gas-liquid separation baffle 3 separates the gas and liquid phases, blocks the liquid phase from entering the gas phase outlet 2, and can also collect the separated liquid phase fluid to help the liquid phase fluid flow out of the movable liquid outlet pipe; the gas phase fluid flows out of the gas phase outlet 2 through the gap in the middle of the gas-liquid separation baffle 3.

[0017] Figure 4It is a structural diagram of a gas-liquid separator for an airborne refrigeration system in a second preferred embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the fixed liquid outlet pipe 7 is at the bottom of the cylinder body, and the liquid leakage holes 6 are evenly arranged on the outer side of the spiral coil pipe 5 but have a certain angle towards the fixed liquid outlet pipe 7. When the direction of the equivalent gravity is opposite to the direction of the conventional gravity, due to the large ejection speed of the liquid-phase fluid and the certain angle of the ejection port, there is an initial velocity towards the fixed liquid outlet pipe 7, which is sufficient to resist the influence of the equivalent gravity, and the liquid still mainly flows out from the fixed liquid outlet pipe 7. This embodiment is mainly suitable for aircraft with a very short time and small value under the condition that the direction of the equivalent gravity is opposite, or those that can accept a certain reduction in refrigeration performance within a certain period of time.

[0018] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should all be covered within the scope of the claims of the present invention.

Claims

1. A gas-liquid separator for an onboard refrigeration system, characterized in that: The invention comprises a gas-liquid two-phase inlet (1), a gas phase outlet (2), a gas-liquid separation baffle (3), a cylinder (4), a spiral coil (5), a liquid leakage hole (6), a fixed liquid outlet pipe (7), a rotating mechanism (8), and a movable liquid outlet pipe (9); the upper part of the cylinder (4) is provided with a gas-liquid two-phase inlet (1) and a gas phase outlet (2); the middle of the cylinder 1 is provided with a spiral coil (5); the upper end of the spiral coil (5) is connected to the gas-liquid two-phase inlet (1); a liquid leakage hole (6) for discharging the liquid phase is provided on the outer tube wall of the spiral coil (5); the spiral coil (5) is provided with a liquid leakage hole (6) for discharging the liquid phase; ) is provided at the tail end, and the outlet direction is parallel to the tangential direction of the cylinder (4), so as to ensure that the gas-liquid two-phases continue to flow in a tangential rotation along the cylinder (4) without generating a vertical impact with the cylinder; a gas-liquid separation baffle (3) is provided at the lower end of the gas phase outlet (2), which can prevent the liquid phase from flowing out of the gas phase outlet; a fixed liquid outlet pipe (7) is provided in the middle of the cylinder (4), and a rotating mechanism (8) is arranged on the fixed liquid outlet pipe (7), and the rotating mechanism (8) is connected to the movable liquid outlet pipe (9), and the movable liquid outlet pipe (9) can rotate freely at 360 degrees, so as to realize gas-liquid separation under changing overload and posture.

2. The gas-liquid separator for an onboard refrigeration system according to claim 1, characterized in that: The leakage holes (6) are evenly arranged on the outer middle side wall of the spiral coil (5), and the hole openings are opened in a horizontal direction or opened at a certain angle to the fixed liquid outlet pipe (7).

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