CN111721039A

CN111721039A - Gas-liquid separation and heat regeneration device of low-temperature refrigeration system

Info

Publication number: CN111721039A
Application number: CN202010589998.9A
Authority: CN
Inventors: 刘世童
Original assignee: Dalian Bahnen Petroleum Instrument Co ltd
Current assignee: Dalian Bahnen Petroleum Instrument Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-09-29

Abstract

The invention discloses a gas-liquid separation and heat regeneration device of a low-temperature refrigeration system. The gas-liquid separation and heat regeneration device of the low-temperature refrigeration system comprises a shell, an upper end enclosure and a lower end enclosure; the upper part and the lower part of the shell are respectively an upper end enclosure and a lower end enclosure, the shell, the upper end enclosure and the lower end enclosure form a cavity structure, the upper part of the upper end enclosure is communicated with an upper elbow, the bottom of the lower end enclosure is communicated with a lower elbow, the lower elbow is communicated with a throttling capillary tube, an air return pipe is coiled on the inner wall of the shell, the lower end of the air return pipe extends out of the shell from the position close to the lower end enclosure, and the upper end of the air return pipe penetrates out of the upper part of the shell and.

Description

Gas-liquid separation and heat regeneration device of low-temperature refrigeration system

Technical Field

The invention relates to the technical field of chemical equipment, in particular to a gas-liquid separation and heat regeneration device of a low-temperature refrigeration system.

Background

The mixed refrigerant is formed by mixing gas and liquid, the temperature of the mixed refrigerant rises after being refrigerated, and the mixed refrigerant can also cool by self if the temperature drops. At present, the mixed refrigerant is not used after refrigeration and self-cooling are finished, and new mixed refrigerant is continuously added, so that the refrigeration capacity is lost, and the self-cooling effect is poor.

Disclosure of Invention

In order to overcome the defects, the invention provides a gas-liquid separation and heat regeneration device of a low-temperature refrigeration system.

The gas-liquid separation and heat regeneration device of the low-temperature refrigeration system comprises a shell, an upper end enclosure and a lower end enclosure; the upper portion and the lower part of shell are upper cover and low head respectively, a housing, upper cover and low head form a cavity structure, the upper portion intercommunication of upper cover has the elbow, the bottom intercommunication of low head has the elbow, the elbow communicates the throttling capillary down, it has the muffler to coil on the shell inner wall, the lower extreme of muffler stretches out the shell from being close to the low head, the upper end of muffler is worn out and upwards extends from the upper portion of shell, the filter screen has been placed to the level below the muffler of shell, the three stationary flow otter board of horizontal distribution in the muffler, the level sets up the intake pipe between filter screen and the muffler bottom, a part of intake pipe is in the inside of shell, another part of intake pipe is in the outside of shell, the one end of the intake pipe of shell is sealed, a plurality of holes are arranged to the intake pipe bottom.

The filter screen is a square grid structure, and the length of one mesh is less than 0.5 mm.

Compared with the prior art, the invention has the beneficial effects that: the mixed refrigerant can utilize the refrigerant in the muffler to cool the mixed refrigerant, mainly cool the gas part of the mixed refrigerant, and the liquid part of the mixed refrigerant also has the cooling effect, and does not need to be cooled.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 2;

in the figure: 1. the device comprises a shell, 2, an upper end enclosure, 3, a lower end enclosure, 4, an air return pipe, 5, a flow stabilizing screen plate, 6, an air inlet pipe, 7, a lower elbow, 8, a throttling capillary pipe, 9, a filter screen, 10 and an upper elbow.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the gas-liquid separation and heat recovery device of the low-temperature refrigeration system comprises an upper end enclosure 2 and a lower end enclosure 3 of a shell 1, wherein the upper end enclosure 2 and the lower end enclosure 3 are respectively arranged at the upper part and the lower part of the shell 1, the upper end enclosure 2 and the lower end enclosure 3 form a cavity structure, the upper part of the upper end enclosure 2 is communicated with an upper elbow 10, the bottom of the lower end enclosure 3 is communicated with a lower elbow 7, the lower elbow 7 is communicated with a throttling capillary tube 8, a gas return tube 4 is coiled on the inner wall of the shell 1, the lower end of the gas return tube 4 extends out of the shell 1 from the position close to the lower end enclosure 3, the upper end of the gas return tube 4 penetrates out of the upper part of the shell 1 and extends upwards, a filter screen 9 is horizontally arranged below the gas return tube 4 of the shell 1, three steady flow mesh plates 5 are horizontally distributed in the gas return, the other part of the air inlet pipe 6 is arranged outside the shell 1, one end of the air inlet pipe 6 of the shell 1 is closed, and a plurality of holes are arranged at the bottom of the air inlet pipe 6 of the shell 1.

The filter screen 9 is a square grid structure, and the length of one mesh is less than 0.5 mm.

The mixed refrigerant is formed by mixing gas and liquid, the temperature of the mixed refrigerant is higher after the self-cooling of the mixed refrigerant is finished, but the mixed components of the gas and the liquid are still kept, the mixed refrigerant after the self-cooling is finished enters the inside of the shell 1 through the gas inlet pipe 6, the liquid part of the mixed refrigerant flows to the bottom of the lower end enclosure 3 through a plurality of holes arranged at the bottom of the gas inlet pipe 6 and enters the evaporative condenser through the throttling capillary tube 8, and the throttling capillary tube 8 is communicated with the evaporative condenser and is communicated with the evaporative condenser; the gas part of the mixed refrigerant rises to enter the evaporative condenser from the upper head 2, and the upper head 2 is communicated with the evaporative condenser. The gas part of the mixed refrigerant rises through the air return pipe 4, the temperature of the gas part of the mixed refrigerant is reduced due to the lower temperature of the air return pipe 4, the gas part of the mixed refrigerant enters the evaporative condenser through the upper end enclosure 2 after the temperature of the gas part of the mixed refrigerant is reduced, so that the mixed refrigerant entering the shell 1 is separated from gas and liquid and then enters the evaporative condenser for reutilization, no new mixed refrigerant needs to be continuously added, the refrigerating capacity is prevented from loss, and the self-cooling effect is good.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Gas-liquid separation and backheat device of low temperature refrigerating system, including shell (1), upper cover (2) and low head (3), its characterized in that: the upper part and the lower part of the shell (1) are respectively an upper seal head (2) and a lower seal head (3), the shell (1), the upper seal head (2) and the lower seal head (3) form a cavity structure, the upper part of the upper seal head (2) is communicated with an upper elbow (10), the bottom of the lower seal head (3) is communicated with a lower elbow (7), the lower elbow (7) is communicated with a throttling capillary tube (8), an air return pipe (4) is coiled on the inner wall of the shell (1), the lower end of the air return pipe (4) extends out of the shell (1) from the position close to the lower seal head (3), the upper end of the air return pipe (4) penetrates out of the upper part of the shell (1) and extends upwards, a filter screen (9) is horizontally placed below the air return pipe (4) of the shell (1), three steady flow net plates (5) are horizontally distributed in the air return pipe (4), an air inlet pipe (, one part of the air inlet pipe (6) is arranged in the shell (1), the other part of the air inlet pipe (6) is arranged outside the shell (1), one end of the air inlet pipe (6) of the shell (1) is closed, and a plurality of holes are arranged at the bottom of the air inlet pipe (6) of the shell (1).

2. The gas-liquid separating and heat regenerating device of a cryogenic refrigeration system according to claim 1, wherein: the filter screen (9) is of a square grid structure, and the length of one mesh is less than 0.5 mm.