CN111871160B - Membrane component structure of air separator - Google Patents
Membrane component structure of air separator Download PDFInfo
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- CN111871160B CN111871160B CN202010700956.8A CN202010700956A CN111871160B CN 111871160 B CN111871160 B CN 111871160B CN 202010700956 A CN202010700956 A CN 202010700956A CN 111871160 B CN111871160 B CN 111871160B
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- air inlet
- air outlet
- inlet end
- air
- seal head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/024—Hollow fibre modules with a single potted end
Abstract
The invention belongs to the air separation membrane technology, and relates to an improvement of a membrane component structure of an air separator. The method is characterized in that: the hollow fiber membrane bundle comprises a non-metal supporting cylinder 15 sleeved outside a hollow fiber membrane bundle 8, and two ends of the non-metal supporting cylinder 15 are respectively connected with an air inlet end epoxy resin seal head 7 and an air outlet end epoxy resin seal head 9 into a whole through epoxy resin pouring. The invention provides a membrane component structure of an air separator, so as to enhance the oxygen permeation capability of hollow fiber membrane tows close to an air outlet and improve the nitrogen production efficiency of the membrane component; the cracking probability of the epoxy resin seal head at the air inlet end is reduced, and the air tightness of the system is ensured; meanwhile, the heat loss in the high-altitude low-temperature environment is reduced.
Description
Technical Field
The invention belongs to the air separation membrane technology, and relates to an improvement of a membrane component structure of an air separator.
Background
A core device in an aircraft fuel tank inerting system is an air separator, a core component of the air separator is a membrane component, and the structure of the membrane component of the existing air separator is shown in figure 1 and comprises a cylinder body 1, an air inlet end 2, an air inlet end first sealing ring 3, an air inlet end screw 4, an air inlet end check ring 5, an air inlet end second sealing ring 6, an air inlet end epoxy resin seal head 7, hollow fiber membrane tows 8, an air outlet end epoxy resin seal head 9, an air outlet end second sealing ring 10, an air outlet end check ring 11, an air outlet end screw 12, an air outlet end first sealing ring 13 and an air outlet end 14. The cylinder 1 is a cylinder, an exhaust port 1a is arranged on the cylinder of the cylinder 1 close to the left side, the right end of the air inlet end 2 is connected with the left end of the cylinder 1 into a whole, the left end of the air outlet end 14 is connected with the right end of the cylinder 1 into a whole, and the air inlet end 2, the cylinder 1 and the air outlet end 14 form a shell of the membrane separation component. The left side of the air inlet end head 2 is provided with an air inlet 2a, the right side of the air outlet end head 14 is provided with an air outlet 14a, the air inlet end epoxy resin seal head 7, the hollow fiber membrane tows 8 and the air outlet end epoxy resin seal head 9 are integrally formed by casting and are positioned in the shell, the air inlet end epoxy resin seal head 7 is partially positioned in the air inlet end head 2, and the air outlet end epoxy resin seal head 9 is partially positioned in the air outlet end head 14. An air inlet end epoxy seal head sealing groove is formed in the position, close to the air inlet, of the outer cylindrical surface of the air inlet end epoxy seal head 7, and the air inlet end first sealing ring 3 is located in the air inlet end epoxy seal head sealing groove. An air inlet end check ring mounting groove is formed in the air inlet end epoxy seal groove on the outer cylindrical surface of the air inlet end epoxy seal head 7, the air inlet end check ring 5 is located in the air inlet end check ring mounting groove, a second air inlet end epoxy seal groove is formed in the air inlet end check ring mounting groove, and the second air inlet end seal ring 6 is located in the second air inlet end epoxy seal groove. An air outlet end epoxy seal head sealing groove is formed in the position, close to an air outlet, of the outer cylindrical surface of the air outlet end epoxy seal head 9, and the air outlet end first sealing ring 13 is located in the air outlet end epoxy seal head sealing groove. An air outlet end check ring mounting groove is formed in the air outlet end epoxy resin seal groove on the outer cylindrical surface of the air outlet end epoxy resin seal head 9, the air outlet end check ring 11 is located in the air outlet end epoxy resin seal groove, a second air outlet end epoxy resin seal groove is formed in the air outlet end check ring mounting groove, and the air outlet end second seal ring 10 is located in the second air outlet end epoxy resin seal groove. A gas inlet end flange is arranged at the right end opening of the gas inlet end 2, a cylinder body left flange is arranged at the left end opening of the cylinder body 1, and the gas inlet end flange, a gas inlet end retainer ring 5 and the cylinder body left flange are connected into a whole through a gas inlet end screw 4; the left end of the air outlet end 14 is provided with an air outlet end flange, the right end of the cylinder 1 is provided with a cylinder right flange, and the air outlet end flange, the air outlet end retainer ring 11 and the cylinder right flange are connected into a whole through an air outlet end screw 12. The disadvantages of this structure are: first, the hollow fiber membrane tow 8 has a high concentration and a large amount of oxygen leaking out near the air inlet. The existing structure enables high-concentration oxygen to be diffused to the whole annular space outside the hollow fiber membrane tows 8, so that the oxygen permeation capacity of the hollow fiber membrane tows 8 is weakened, and the nitrogen production efficiency of the hollow fiber membrane separation assembly is reduced. And secondly, the connection strength of the air inlet end epoxy resin seal head and the air inlet end is low. When the air inlet valve starts to work, the pressure of the air inlet rises, the air inlet end check ring 5 is greatly stressed, and when the air inlet valve repeatedly works for a long time, the air inlet end epoxy seal head 7 is easily cracked, so that the air tightness of the system is damaged. Thirdly, the membrane module works in the air at low temperature, and the nitrogen production efficiency is reduced due to the influence of low temperature.
Disclosure of Invention
The purpose of the invention is: the membrane component structure of the air separator is provided so as to enhance the oxygen permeation capability of the hollow fiber membrane tows close to the air outlet and improve the nitrogen production efficiency of the membrane component; the cracking probability of the epoxy resin seal head at the air inlet end is reduced, and the air tightness of the system is ensured; meanwhile, the heat loss in the high-altitude low-temperature environment is reduced.
The technical scheme of the invention is as follows: a membrane component structure of an air separator comprises a cylinder body 1, an air inlet end 2, an air inlet end first sealing ring 3, an air inlet end screw 4, an air inlet end second sealing ring 6, an air inlet end epoxy resin seal head 7, hollow fiber membrane tows 8, an air outlet end epoxy resin seal head 9, an air outlet end second sealing ring 10, an air outlet end screw 12, an air outlet end first sealing ring 13 and an air outlet end 14; the cylinder body 1 is a cylinder, an exhaust port 1a is arranged on the cylinder of the cylinder body 1 close to the left side, the right end of the air inlet end 2 is connected with the left end of the cylinder body 1 into a whole, the left end of the air outlet end 14 is connected with the right end of the cylinder body 1 into a whole, and the air inlet end 2, the cylinder body 1 and the air outlet end 14 form a shell of the membrane separation component; an air inlet 2a is arranged on the left side of the air inlet end 2, an air outlet 14a is arranged on the right side of the air outlet end 14, an air inlet end epoxy resin seal head 7, hollow fiber membrane tows 8 and an air outlet end epoxy resin seal head 9 are integrally formed in the shell through casting, the air inlet end epoxy resin seal head 7 is positioned in the air inlet end 2, and the air outlet end epoxy resin seal head 9 is positioned in the air outlet end 14; an air inlet end epoxy seal head sealing groove is formed in the position, close to an air inlet, of the outer cylindrical surface of the air inlet end epoxy seal head 7, and the air inlet end first sealing ring 3 is located in the air inlet end epoxy seal head sealing groove; a second air inlet end epoxy seal head sealing groove is formed in the outer cylindrical surface of the air inlet end epoxy seal head 7 and the inner side of the air inlet end epoxy seal head sealing groove, and an air inlet end second sealing ring 6 is located in the second air inlet end epoxy seal head sealing groove; an air outlet end epoxy seal head sealing groove is formed in the position, close to an air outlet, of the outer cylindrical surface of the air outlet end epoxy seal head 9, and the air outlet end first sealing ring 13 is located in the air outlet end epoxy seal head sealing groove; a second air outlet end epoxy seal head sealing groove is formed in the outer cylindrical surface of the air outlet end epoxy seal head 9 and inside the air outlet end epoxy seal head sealing groove, and the air outlet end second sealing ring 10 is located in the second air outlet end epoxy seal head sealing groove; a gas inlet end flange is arranged at the right end port of the gas inlet end 2, a cylinder body left flange is arranged at the left end port of the cylinder body 1, and the gas inlet end flange and the cylinder body left flange are connected into a whole through a gas inlet end screw 4; an air outlet end flange is arranged at the left end of the air outlet end 14, a cylinder body right flange is arranged at the right end of the cylinder body 1, and the air outlet end flange and the cylinder body right flange are connected into a whole through an air outlet end screw 12; the method is characterized in that: the hollow fiber membrane bundle is characterized in that a non-metal supporting cylinder 15 is sleeved outside the hollow fiber membrane bundle 8, two ends of the non-metal supporting cylinder 15 are respectively connected with an air inlet end epoxy resin seal head 7 and an air outlet end epoxy resin seal head 9 into a whole through epoxy resin pouring, a circle of exhaust holes which are uniformly distributed along the circumference are arranged on the non-metal supporting cylinder 15 close to the air inlet end epoxy resin seal head 7, the axial positions of the exhaust holes correspond to the axial positions of an exhaust port 1a, and the diameter of the exhaust holes is not smaller than that of the exhaust port 1 a; an air inlet end inner spigot 2b is arranged in the right end opening of the air inlet end 2, an air outlet end inner spigot 14b is arranged in the left end opening of the air outlet end 14, the air inlet end epoxy resin seal head 7 is inserted into the air inlet end inner spigot 2b, and the air outlet end epoxy resin seal head 9 is inserted into the air outlet end inner spigot 14 b.
The invention has the advantages that: the membrane component structure of the air separator is provided, so that the oxygen permeation capability of hollow fiber membrane tows close to the air outlet is enhanced, and the nitrogen production efficiency of the membrane component is improved; the cracking probability of the epoxy resin seal head at the air inlet end is reduced, and the air tightness of the system is ensured; meanwhile, the heat loss in the high-altitude low-temperature environment is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a conventional membrane module.
Fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
The present invention is described in further detail below. Referring to fig. 2, a membrane module structure of an air separator comprises a cylinder 1, an air inlet end 2, an air inlet end first sealing ring 3, an air inlet end screw 4, an air inlet end second sealing ring 6, an air inlet end epoxy resin seal head 7, a hollow fiber membrane tow 8, an air outlet end epoxy resin seal head 9, an air outlet end second sealing ring 10, an air outlet end screw 12, an air outlet end first sealing ring 13 and an air outlet end 14; the cylinder body 1 is a cylinder, an exhaust port 1a is arranged on the cylinder of the cylinder body 1 close to the left side, the right end of the air inlet end 2 is connected with the left end of the cylinder body 1 into a whole, the left end of the air outlet end 14 is connected with the right end of the cylinder body 1 into a whole, and the air inlet end 2, the cylinder body 1 and the air outlet end 14 form a shell of the membrane separation component; an air inlet 2a is arranged on the left side of the air inlet end 2, an air outlet 14a is arranged on the right side of the air outlet end 14, an air inlet end epoxy resin seal head 7, hollow fiber membrane tows 8 and an air outlet end epoxy resin seal head 9 are integrally formed in the shell through casting, the air inlet end epoxy resin seal head 7 is positioned in the air inlet end 2, and the air outlet end epoxy resin seal head 9 is positioned in the air outlet end 14; an air inlet end epoxy seal head sealing groove is formed in the position, close to an air inlet, of the outer cylindrical surface of the air inlet end epoxy seal head 7, and the air inlet end first sealing ring 3 is located in the air inlet end epoxy seal head sealing groove; a second air inlet end epoxy seal head sealing groove is formed in the outer cylindrical surface of the air inlet end epoxy seal head 7 and the inner side of the air inlet end epoxy seal head sealing groove, and an air inlet end second sealing ring 6 is located in the second air inlet end epoxy seal head sealing groove; an air outlet end epoxy seal head sealing groove is formed in the position, close to an air outlet, of the outer cylindrical surface of the air outlet end epoxy seal head 9, and the air outlet end first sealing ring 13 is located in the air outlet end epoxy seal head sealing groove; a second air outlet end epoxy seal head sealing groove is formed in the outer cylindrical surface of the air outlet end epoxy seal head 9 and inside the air outlet end epoxy seal head sealing groove, and the air outlet end second sealing ring 10 is located in the second air outlet end epoxy seal head sealing groove; a gas inlet end flange is arranged at the right end port of the gas inlet end 2, a cylinder body left flange is arranged at the left end port of the cylinder body 1, and the gas inlet end flange and the cylinder body left flange are connected into a whole through a gas inlet end screw 4; an air outlet end flange is arranged at the left end of the air outlet end 14, a cylinder body right flange is arranged at the right end of the cylinder body 1, and the air outlet end flange and the cylinder body right flange are connected into a whole through an air outlet end screw 12; the method is characterized in that: the hollow fiber membrane bundle is characterized in that a non-metal supporting cylinder 15 is sleeved outside the hollow fiber membrane bundle 8, two ends of the non-metal supporting cylinder 15 are respectively connected with an air inlet end epoxy resin seal head 7 and an air outlet end epoxy resin seal head 9 into a whole through epoxy resin pouring, a circle of exhaust holes which are uniformly distributed along the circumference are arranged on the non-metal supporting cylinder 15 close to the air inlet end epoxy resin seal head 7, the axial positions of the exhaust holes correspond to the axial positions of an exhaust port 1a, and the diameter of the exhaust holes is not smaller than that of the exhaust port 1 a; an air inlet end inner spigot 2b is arranged in the right end opening of the air inlet end 2, an air outlet end inner spigot 14b is arranged in the left end opening of the air outlet end 14, the air inlet end epoxy resin seal head 7 is inserted into the air inlet end inner spigot 2b, and the air outlet end epoxy resin seal head 9 is inserted into the air outlet end inner spigot 14 b.
The working principle of the invention is as follows: first, increase a cover at the support section of thick bamboo 15 of the non-metallic material in hollow fiber membrane silk bundle 8 outside, the both ends of supporting a section of thick bamboo 15 are passed through the epoxy pouring respectively with inlet end epoxy head 7, it is whole to go out the end epoxy head 9 and be connected, there is the exhaust hole of round along the circumference equipartition through the position that is close to inlet end epoxy head 7 on supporting a section of thick bamboo 15, the oxygen concentration that will be close to the air inlet and ooze is high, a large amount of waste gas is arranged to support a section of thick bamboo 15 outside, it is high to reduce the oxygen concentration that oozes, a large amount of influences to the 8 infiltration oxygen capacities of hollow fiber membrane silk bundle near gas outlet 14a, thereby the nitrogen making efficiency of membrane module has been improved. Secondly, the invention cancels a retainer ring structure, solves the axial positioning problem of the hollow fiber membrane tows technically, and comprises the following steps: two ends of the non-metallic supporting cylinder 15 are respectively connected with the air inlet end epoxy seal head 7 and the air outlet end epoxy seal head 9 into a whole through epoxy resin pouring; therefore, the integral structure can resist stretching and compression, and meanwhile, the spigot 2b is arranged in the air inlet end and the spigot 14b is arranged in the air outlet end, so that the problem of axial positioning of the integral structure is solved. Thirdly, the invention adopts the non-metal supporting cylinder 15, and the non-metal supporting cylinder 15 has the heat insulation effect, thereby preventing the heat loss of the high-temperature separation gas, further reducing the heat loss of the membrane module in the high-altitude low-temperature environment and improving the nitrogen production efficiency of the membrane module in the low-temperature environment.
In an embodiment 1 of the present invention, the membrane module is a cylinder, and the outer dimensions are as follows: the length is 1 meter, the maximum outer diameter of the end face circle is 200 mm, and by adopting the method, the nitrogen production efficiency of the membrane component can be increased by more than 20% in a normal temperature environment, and the nitrogen production efficiency is improved by more than 40% in a low-temperature-55-degree environment.
In an embodiment 2 of the present invention, the membrane module is a cylinder, and the external dimensions are as follows: the length is 1.2 meters, the maximum outer diameter of the end face circle is 200 millimeters, and by adopting the method, the nitrogen production efficiency of the membrane component can be increased by more than 24% in a normal temperature environment, and the nitrogen production efficiency is improved by more than 48% in a low-temperature-55-degree environment.
In an embodiment 3 of the present invention, the membrane module is a cylinder, and the external dimensions are as follows: the length is 1.5 meters, the maximum outer diameter of the end face circle is 200 millimeters, and by adopting the method, the nitrogen production efficiency of the membrane component can be increased by more than 30 percent in a normal temperature environment, and the nitrogen production efficiency is improved by more than 60 percent in a low-temperature-55-degree environment.
Claims (1)
1. A membrane component structure of an air separator comprises a cylinder body (1), an air inlet end (2), an air inlet end first sealing ring (3), an air inlet end screw (4), an air inlet end second sealing ring (6), an air inlet end epoxy resin end socket (7), hollow fiber membrane tows (8), an air outlet end epoxy resin end socket (9), an air outlet end second sealing ring (10), an air outlet end screw (12), an air outlet end first sealing ring (13) and an air outlet end (14); the membrane separation component is characterized in that the barrel body (1) is a cylinder, an exhaust port (1a) is arranged on the left side of the cylinder of the barrel body (1), the right end of the air inlet end (2) is connected with the left end of the barrel body (1) into a whole, the left end of the air outlet end (14) is connected with the right end of the barrel body (1) into a whole, and the air inlet end (2), the barrel body (1) and the air outlet end (14) form a shell of the membrane separation component; an air inlet (2a) is formed in the left side of the air inlet end (2), an air outlet (14a) is formed in the right side of the air outlet end (14), the air inlet end epoxy resin seal head (7), the hollow fiber membrane tows (8) and the air outlet end epoxy resin seal head (9) are integrally positioned in the shell through casting, the air inlet end epoxy resin seal head (7) is positioned in the air inlet end (2), and the air outlet end epoxy resin seal head (9) is positioned in the air outlet end (14); an air inlet end epoxy seal head sealing groove is formed in the position, close to an air inlet, of the outer cylindrical surface of the air inlet end epoxy seal head (7), and a first air inlet end sealing ring (3) is located in the air inlet end epoxy seal head sealing groove; a second air inlet end epoxy seal head sealing groove is formed in the outer cylindrical surface of the air inlet end epoxy seal head (7) and the inner side of the air inlet end epoxy seal head sealing groove, and an air inlet end second sealing ring (6) is located in the second air inlet end epoxy seal head sealing groove; an air outlet end epoxy seal head sealing groove is formed in the position, close to an air outlet, of the outer cylindrical surface of the air outlet end epoxy seal head (9), and a first air outlet end sealing ring (13) is located in the air outlet end epoxy seal head sealing groove; a second air outlet end epoxy seal head sealing groove is formed in the outer cylindrical surface of the air outlet end epoxy seal head (9) and inside the air outlet end epoxy seal head sealing groove, and an air outlet end second sealing ring (10) is located in the second air outlet end epoxy seal head sealing groove; the right port of the air inlet end (2) is provided with an air inlet end flange, the left port of the cylinder (1) is provided with a cylinder left flange, and the air inlet end flange and the cylinder left flange are connected into a whole through an air inlet end screw (4); the left port of the air outlet end (14) is provided with an air outlet end flange, the right port of the cylinder body (1) is provided with a cylinder body right flange, and the air outlet end flange and the cylinder body right flange are connected into a whole through an air outlet end screw (12); the method is characterized in that: the hollow fiber membrane bundle air inlet end sealing device is characterized by comprising a non-metal supporting cylinder (15) sleeved outside a hollow fiber membrane bundle (8), wherein two ends of the non-metal supporting cylinder (15) are respectively connected with an air inlet end epoxy resin sealing head (7) and an air outlet end epoxy resin sealing head (9) into a whole through epoxy resin pouring, a circle of exhaust holes which are uniformly distributed along the circumference are formed in the position, close to the air inlet end epoxy resin sealing head (7), of the non-metal supporting cylinder (15), the axial positions of the exhaust holes correspond to the axial positions of an exhaust port (1a), and the diameter of each exhaust hole is not smaller than that of the exhaust port (1 a); have tang (2b) in the end of admitting air in the right-hand member mouth of end of admitting air (2), have tang (14b) in the end of giving vent to anger in the left end mouth of end of giving vent to anger (14), in tang (2b) in end of admitting air is inserted in end of admitting air to end epoxy head (7), end epoxy head (9) of giving vent to anger insert in end of giving vent to anger tang (14 b).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010700956.8A CN111871160B (en) | 2020-07-20 | 2020-07-20 | Membrane component structure of air separator |
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| CN202010700956.8A CN111871160B (en) | 2020-07-20 | 2020-07-20 | Membrane component structure of air separator |
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| CN111871160A CN111871160A (en) | 2020-11-03 |
| CN111871160B true CN111871160B (en) | 2021-07-23 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201744280U (en) * | 2010-03-19 | 2011-02-16 | 张隆华 | High molecular hollow membrane compressed gas dehumidifier |
| CN205627544U (en) * | 2016-05-04 | 2016-10-12 | 合肥江航飞机装备有限公司 | Membrane separable set's end and connection structure of barrel |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6814780B2 (en) * | 2001-05-02 | 2004-11-09 | L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Hollow fiber membrane gas separation cartridge and gas purification assembly |
| US6755894B2 (en) * | 2001-05-02 | 2004-06-29 | Praxair Technology, Inc. | Hollow fiber membrane gas separation cartridge and gas purification assembly |
| US6776820B2 (en) * | 2001-07-10 | 2004-08-17 | Praxair Technology, Inc. | Integral hollow fiber membrane gas dryer and filtration device |
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2020
- 2020-07-20 CN CN202010700956.8A patent/CN111871160B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201744280U (en) * | 2010-03-19 | 2011-02-16 | 张隆华 | High molecular hollow membrane compressed gas dehumidifier |
| CN205627544U (en) * | 2016-05-04 | 2016-10-12 | 合肥江航飞机装备有限公司 | Membrane separable set's end and connection structure of barrel |
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| CN111871160A (en) | 2020-11-03 |
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