320系列气动系统

航空发表于 2011-4-9 10:40:02

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航空发表于 2011-4-9 10:40:37

PNEUMATIC MENU System Presentation 1/28 PNEUMATIC MENU System Presentation 2/28 Pneumatic System The A320 pneumatic system supplies high pressure air for : • air conditioning • wing anti icing • water pressurization • hydraulic reservoir pressurization • engine starting Wing anti icing Air conditioning Water pressurization Hydraulic reservoir pressurization Engine starting PNEUMATIC MENU System Presentation 3/28 Pneumatic System GGRROOUUNNDDAAIIRR AAPPUU EENNGGIINNEESS High pressure air can be supplied from three sources : • the engine bleed system • the APU • an external high pressure ground power unit Wing anti icing Air conditioning Water pressurization Hydraulic reservoir pressurization Engine starting PNEUMATIC MENU System Presentation 4/28 Pneumatic System BMC 1 BMC 2 The pneumatic system is controlled and monitored by 2 Bleed Monitoring Computers (BMC). There is one BMC for each engine bleed system. Both BMC are interconnected and if one fails, the other takes over most of its functions. PNEUMATIC MENU System Presentation 5/28 BMC 2 There are air leakage detection loops installed in the vicinity of the hot air ducts in the fuselage, wings and pylons. If a leak is detected, a signal is sent to the BMC which automatically isolate the affected area. BMC 1 PNEUMATIC MENU System Presentation 6/28 In flight, the primary source for high pressure air is the engines. Both engines bleed systems are similar. PNEUMATIC MENU System Presentation 7/28 Air is bled from two compressor stages of the engine, the Intermediate Pressure (IP) port and the High Pressure (HP) port. IIPP HHPP PNEUMATIC MENU System Presentation 8/28 There is a HP valve which can cut off bleed air from the high pressure port. It is automatically controlled by the system. IP HP PNEUMATIC MENU System Presentation 9/28 The High Pressure section (HP) is only used when there is insufficient pressure from the Intermediate output (IP), i.e. when the engines are at idle. Once the engine speed is high enough, the IP pressure is sufficient and the HP valve closes. IP HP PNEUMATIC MENU System Presentation 10/28 The air extracted from the compressor then goes to a bleed valve which acts as a shut off and pressure regulating valve. IP HP BLEED VALVE PNEUMATIC MENU System Presentation 11/28 Since the temperature of the bleed air is high, it passes through a precooler before being distributed to the users. The precooler uses cool air from the engine fan to regulate the temperature. IP HP BLEED VALVE Precooler PNEUMATIC MENU System Presentation 12/28 ENG 2 has an identical BLEED SYSTEM. IP HP BLEED VALVE Click on the blue box to display the engine 2 bleed system. Precooler ENG 1 PNEUMATIC MENU System Presentation 13/28 IP HP BLEED VALVE Precooler ENG 1 HP IP BLEED VALVE Precooler ENG 2 PNEUMATIC MENU System Presentation 14/28 IP HP HP IP BLEED VALVE BLEED VALVE Both systems are connected by a crossbleed duct. A crossbleed valve permits their interconnection or isolation. X BLEED VALVE Precooler Precooler ENG 1 ENG 2 PNEUMATIC MENU System Presentation 15/28 IP HP HP IP BLEED VALVE BLEED VALVE The APU can also be used for BLEED air supply. This is usually done on ground for air conditioning and for engine start. However, APU BLEED air is also available in flight. X BLEED VALVE APU Precooler Precooler ENG 1 ENG 2 PNEUMATIC MENU System Presentation 16/28 IP HP HP IP BLEED VALVE BLEED VALVE APU BLEED air is controlled by the APU bleed valve which operates as a shut off valve. X BLEED VALVE APU BLEED VALVE APU Precooler Precooler ENG 1 ENG 2 PNEUMATIC MENU System Presentation 17/28 ENG 1 ENG 2 APU GPU IP HP HP IP BLEED VALVE BLEED VALVE X BLEED VALVE Should the APU not be available, a high pressure ground power unit can be connected. This completes the pneumatic system. We will now show you how system information is displayed to the pilots. APU BLEED Precooler VALVE Precooler PNEUMATIC MENU System Presentation 18/28 APU IIP HP HP IIP PPrreeccoooolleerr PPrreeccoooolleerr GND The pneumatic system is displayed on the ECAM BLEED page. Click on the diagram to display the ECAM BLEED page... PNEUMATIC MENU System Presentation 19/28 APU IIP HP HP IIP PPrreeccoooolleerr PPrreeccoooolleerr GND Information on the pneumatic system is displayed on the lower part of the ECAM BLEED page. Note : we have shaded the upper part of the ECAM BLEED page because it is related to the AIR CONDITIONING chapter. This will be covered in a later module. PNEUMATIC MENU System Presentation 20/28 Let’s identify the system components on the ECAM page now : • The IP and HP ports, • the HP valves, PNEUMATIC MENU System Presentation 21/28 • the engine bleed valves, • the precoolers, • the APU bleed valve, PNEUMATIC MENU System Presentation 22/28 • the crossbleed valve • the high pressure ground connection. PNEUMATIC MENU System Presentation 23/28 The following information is also displayed : • bleed air pressure • bleed air temperature • engine identification numbers PNEUMATIC MENU System Presentation 24/28 Controls for the pneumatic system are part of the AIR COND panel, located on the overhead panel. Again, we have shaded those controls which belong to the AIR CONDITIONING chapter. PNEUMATIC MENU System Presentation 25/28 Each engine bleed valve is controlled by its associated pb sw on the AIR COND panel. PNEUMATIC MENU System Presentation 26/28 The APU bleed valve is controlled by its associated pb sw. PNEUMATIC MENU System Presentation 27/28 The X BLEED selector enables the pilot to open and close the crossbleed valve manually or to let the system operate the X BLEED valve automatically. PNEUMATIC MENU System Presentation 28/28 You will learn to interpret all the indications and operate these controls in the normal and abnormal operation modules. NEXT Module completed ! PNEUMATIC MENU System Presentation 29/28 LLIISSTTOOFFSSUUBBJJEECCTTSS EXIT AUDIO GLOSSARY FCOM RETURN SSYYSSTTEEMMIINNTTRROODDUUCCTTIIOONN EECCAAMMBBLLEEEEDDPPAAGGEE BLEED CONTROLS AND INDICATIONS AAIIRRCCOONNDDPPAANNEELLLLOOCCAATTIIOONN

txc2004701 发表于 2011-6-28 14:35:46

谢谢楼主的辛勤与无私

yw_1221 发表于 2011-7-9 20:46:45

很实用的东东。谢谢。

bocome 发表于 2011-7-31 07:18:35

320系列气动系统

tissle 发表于 2014-4-17 11:37:46

好资料，学习了。。。

diguo 发表于 2017-3-10 13:50:59

好东西，好好学习一下

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320系列气动系统