V2500发动机VBV系统求解

dxchen_09 · 发表于 2013-5-20 15:28:10

V2500发动机高压压气机第七级放气和第十级放气，就是所谓的VBV系统吗？

hjkl · 发表于 2013-5-20 16:34:20

Description of the  System .

The  VBV  actuation  system  provides an angular output through fuel gear motor assembly, master ballscrew actuator assembly and 11 ballscrew actuator assemblies. The  system  is interconnected by 11 flexible shaft assemblies. Eleven ferrules are installed in the engine struts to provide support for the flexible shaft assemblies.
The  system  is designed to open, close, or modulate the 12  VBV  doors to an intermediate position in response to an input command signal. The VBVs remain fully synchronized throughout their complete stroke by the continuous mechanical flexible shaft arrangement. High pressure fuel hydraulically activates the  VBV  actuation  system . The  VBV  position sensor provides  VBV  position bias to the ECU. The master ballscrew actuator assembly is connected by a push-pull feedback rod to the  VBV  position sensor.

QQ截图20130520163356.png

vbv应该是指这些

maymaymiao · 发表于 2013-5-20 17:28:33

对的就是

hyzhao_08 · 发表于 2013-5-20 17:38:37

好像是吧，没接触过！

1054867723 · 发表于 2013-5-20 20:20:19

只要你把楼上的英文看懂就行

路飞 · 发表于 2013-5-21 07:03:16

英文看起来好吃力啊

手谈天下事 · 发表于 2013-5-21 17:12:37

晕，LZ问的是V2500发动机的，楼上的英文是CFM56的，看懂也没用。对于A320系列，CFM56-5B发动机的VBV系统是伺服马达做动的12个VBV门，由ECU控制，燃油伺服做动；而对于V2500发动机，VBV系统除了有2.5级（低压压气机出口）放气带，还有3个高压7级放气活门和1个高压10级放气活门，由EEC控制，由P3引气通过伺服电磁阀做动。

shedengfeng · 发表于 2013-5-21 18:12:56

就是哈

xkxu_03 · 发表于 2013-5-21 18:34:13

手谈天下事:晕，LZ问的是V2500发动机的，楼上的英文是CFM56的，看懂也没用。对于A320系列，CFM56-5B发动机的VBV系统是伺服马达做动的12个VBV门，由ECU控制，燃油伺服做动；而对于V2500发动机，VBV系统除了有2.5级（ .. (2013-05-21 17:12)

你肯定是搞V2500的

手谈天下事 · 发表于 2013-5-21 20:53:45

xkxu_03:你肯定是搞V2500的
(2013-05-21 18:34)

我在定检搞A320，CFM56和V2500都做

拐幺捌 · 发表于 2013-6-2 18:04:47

vbv好像是可调放气活门

1176859894 · 发表于 2013-7-23 01:36:09

积极讨论

royersky · 发表于 2013-8-7 14:01:28

VBV是指CFM的，V2500上就直接叫放气活门。

xyang_04 · 发表于 2013-9-8 22:50:06

v2500发动机里面的vbv指的是 booster stage bleed valve(2.5级) + handling bleed valve（7A,7B,7C,10）

xinix1984 · 发表于 2013-11-21 10:40:16

17楼正解。全程应为BSBV 再补充一下
V2500 A1 构型为一周27个放气活门； A5构型为一周放气环。

lyin36 · 发表于 2013-11-21 11:05:50

hjkl:Description of the System .

The VBV actuation system provides an angular output through fuel gear motor assembly, master ballscrew actuator assembly and 11 ballscrew actuator assemblies. The& .. (2013-05-20 16:34)

厉害！！！！

longwei · 发表于 2013-12-1 22:00:14

V2500有两个BSBV，一个主，一个从

(1) Description

-    The two actuators are hydraulically connected units which operate together. Each of them is attached to a bracket on the intermediate structure.

-    The two bleed-valve actuating rods connect each actuator fork end to the synchronizing ring. The force to move the synchronizing and its linkage through the actuating rods, is supplied from the two actuators.

-    The master actuator gives an accurate control in relation to an electrical input signal (command signal) from the EEC. The master actuator also gives an electrical output signal (the positions of the actuator piston fork end) to an electrical input signal (command signal) from the EEC. The master actuator also gives an electrical output signal (the positions of the actuator piston fork end) to the EEC.

(2) Operation

-    the two actuators open or close in relation to the input signal from the EEC.

将星殒落 · 发表于 2013-12-5 23:26:14

VBV系统是CFM56的。。V2500的七级和十级放气活门相当于CFM56里面的TBV，CFM56的TBV就是把高压压气机十级的气直接放到低压涡轮。。

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