107484 HIGH STAGE REGULATOR

高级调节器

一、名称

HIGH STAGE REGULATOR

高级调节器

二、件号

107484-2~-7,10-62008-15,-31,-39,-42

三、章节号

36-13-93

四、适用机型

B737-300/-400/-500

五、系统

36 PNEUMATIC

气源

六、安装位置

on the right side of the aft fan case at the 2 o’clock position.

在尾部风扇箱的右侧，在2点钟的位置

七、部件原理

(1) Refer to Figure 2.

参考图2

(2) This is a remotely-located controller which functions together with a butterfly valve (not shown) to provide for regulation and shutoff of a high stage bleed air source.

这是一个远程控制器,与蝶板活门(未显示)一起工作,用于调节和关断高压级引气源。

(3) The high stage regulator includes a reference pressure regulator, a reverse flow check mechanism, a pneumatic shutoff and a relief valve assembly.

高级调节器包括基准压力调节器、反流止回机构、气动关断阀和安全阀组件。

(4) The reference pressure regulator contains a diaphragm assembly and a poppet valve assembly. The poppet valve assembly is made up of a poppet valve, guide, spring and retainer. The reverse flow check mechanism is made up of a diaphragm section and poppet valve section, which are connected by an L shaped actuating lever. A seal on the lever isolates the two sections. The poppet valve section is vented to ambient and the poppet is normally spring-loaded to the closed position.

基准压力调节器包含膜片组件和提升阀组件。提升阀组件由提升阀、导向器、弹簧和固定器组成。反流止回机构由膜片部分和提升阀部分组成,两者通过一个L形作动器连接器相连。连接器上的密封件将两部分隔开。提升阀部分与周围环境相通,提升阀通常在弹簧载荷下处于关闭位置。

(5) The rod arm of the poppet contacts one arm of the L shaped lever and the other arm of the lever is held in contact with the diaphragm by a spring. The diaphragm section of the reverse flow check mechanism consists of two chambers. One chamber contains a spring, which forces the diaphragm into contact with the L shaped lever. The other chamber is connected to the downstream pressure connection and downstream test port.

提升阀的杆臂与L形杠杆的一臂相接触,杠杆的另一臂通过弹簧与膜片保持接触。反流止回机构的膜片部分由两个腔室组成。一个腔室包含一个弹簧,该弹簧迫使膜片与L形杠杆接触。另一个腔室与下游压力连接器和下游测试端口相连。

(6) The pneumatic shutoff is made up of a diaphragm, spring and ball valve with two seats. One seat is vented to ambient pressure and the other seat is open to operating pressure. Chamber B of the diaphragm is connected to the supply pressure connection and supply test port.

气动关断装置由膜片、弹簧和带两个阀座的球阀组成。一个阀座通向环境压力,另一个阀座通向操作压力。膜片的腔室B连接到供压连接器和供压测试口。

(7) The relief valve assembly is a spring-loaded poppet valve installed in a housing. Identification information is mounted on the valve body assembly.

安全阀组件是一个安装在壳体中的弹簧载荷提升阀。识别信息安装在活门壳体组件上。

(8) Test ports are provided on the supply, control and downstream pressure connections to allow testing of the valve without disconnecting any lines.

供应、控制和下游压力连接器上设有测试端口,以便在不断开任何管道的情况下测试活门。

2. Operation

操作

(1) Inlet air from an external source enters the supply port and is ported to a reference pressure regulator, a reverse flow check mechanism and a pneumatic shut off. The air ported to the reference pressure regulator passes the metering poppet and is ported to Chamber A where it exerts a pressure force against the reference pressure regulator diaphragm. The diaphragm force balances the force of the regulator spring and moves the metering poppet toward the (closed) position. When the pressure and spring forces are balanced, the pressure downstream of the reference regulator is held at a constant value independent of the inlet pressure. This constant reference pressure is then ported out the control port. When the control port is connected to the remote valve actuator and supplied regulated air from the reference pressure regulator, the remote valve will regulate its downstream air to a constant gauge pressure level.

来自外部的进气进入供气口,并输送至基准压力调节器、反流止回机构和气动关断装置。输送至基准压力调节器的空气通过提升阀,并输送至A腔,在此对基准压力调节器的膜片施加压力。膜片力与调节器弹簧力平衡,并推动提升阀向(关闭)位置移动。当压力和弹簧力达到平衡时,基准调节器的下游压力将保持恒定,与入口压力无关。然后,恒定的基准压力从控制端口输出。当控制端口连接到远程活门作动器并从基准压力调节器提供调节空气时,远程活门将调节其下游空气,使其达到恒定的表压水平。

(2) The supply air source is ported to Chamber B of the pneumatic shut off. When the Chamber B pressure forces exceed a prescribed limit, they overcome the spring force acting on the diaphragm. This causes the poppet to stroke to the opposite seat from that shown, preventing inlet air from reaching the control port. The air pressure trapped in the remote valve actuator passes out through the vent port of the pneumatic shutoff, causing the remote valve to close.

气源连接到气动关断阀的B腔。当B腔压力超过规定限值时,就会克服作用在膜片上的弹簧力。这会导致提升阀向与所示位置相反的阀座移动,从而阻止进气到达控制端口。远程活门作动器中的空气压力通过气动关断阀的排气口排出,从而关闭远程活门。

(3) Downstream pressure from the remote valve is ported to the reverse flow check mechanism where it is compared to the remote valves upstream pressure acting on the opposite side of the diaphragm. If the downstream pressure rises to a predetermined level below the upstream pressure, the poppet is actuated open as shown. This causes the pressure downstream of the control orifice to drop to a low level. The resulting level supplied through the control port is then sufficiently low that the remote valve will close.

远程活门的下游压力被输送到反流止回机构,与作用在膜片另一侧的远程活门上游压力进行比较。如果下游压力上升到高于上游压力的预定水平,则提升阀作动器打开,如图所示。这会导致控制孔下游的压力下降到较低水平。通过控制端口提供的最终压力水平足够低,远程活门将关闭。

(4) A relief valve provides pressure regulation in the event of a reference pressure regulator failure. This regulation pressure is higher than the reference regulation pressure. Also the relief valve allows for rapid “dumping” of air pressure in the remove valve actuator to minimize remote valve pressure regulation “Overshoots” during transient operation.

安全阀可在基准压力调节器出现故障时提供压力调节。调节压力高于基准调节压力。此外,安全阀允许快速“释放”卸荷阀作动器中的气压,从而在瞬态操作期间将远程活门压力调节的“超冲”降至最低。

(5) Test ports are provided on the supply, control and downstream ports to allow testing of the valve without disconnecting any lines.

供气口、控制口和下游口均设有测试口,无需断开任何管路即可对活门进行测试。

八、工作参数

九、在飞机系统中的工作原理及互联

The high stage valve is a pneumatically actuated, spring-loaded closed,butterfly type valve used with the high stage regulator.

高压级活门是一种气动作动、弹簧载荷关闭的蝶板型活门,与高压级调节器配合使用。

High Stage Regulator (Fig. 5)

A. The high stage regulator is a device that functions to provide for regulation and shutoff of the high stage valve.

B. The high stage regulator includes a reference pressure regulator, reverse flow check mechanism, pneumatic shutoff, and a relief valve assembly.

C. The reference pressure regulator contains a diaphragm assembly and a poppet valve assembly consisting of a poppet valve, guide, spring and retainer. The reverse flow check mechanism is made up of two sections. A diaphragm section and poppet valve section are connected by an L shaped actuating lever. A seal on the lever isolates the two sections. The poppet valve section is vented to ambient and the poppet is normally spring loaded to the closed position. The rod arm of the poppet contacts one arm of the L shaped lever and the other arm of the lever is held in contact with the diaphragm by a spring. The diaphragm section of the reverse flow check mechanism consists of two chambers. One chamber contains a spring which forces the diaphragm into contact with the L shaped lever. The other chamber is connected to the downstream pressure connection and downstream test port.

D. The pneumatic shutoff is made up of a diaphragm, spring and ball valve with two seats. One seat is vented to ambient pressure. The opposite seat is open to upstream pressure. Chamber B side of the diaphragm is connected to the supply pressure connection and supply test port.

E. The relief valve assembly is a spring loaded poppet valve installed in a housing. Test ports are provided on the supply, control and downstream pressure connections to allow testing of the valve without disconnecting any lines.

F. Inlet air from the upstream source enters the supply pressure connection and is ported to the reference pressure regulator, reverse flow check mechanism and pneumatic shutoff. The air, ported to the reference pressure regulator, passes the metering poppet and is ported to Chamber A where it exerts pressure against the reference pressure regulator diaphragm. The diaphragm force overcomes the force of the reference pressure regulator spring and moves the metering poppet toward the closed position. When the forces are balanced, the pressure downstream of the reference pressure regulator is held at a constant value independent of the inlet pressure.

G. This constant reference pressure is then ported out the control pressure connection to the high stage valve.

H. The supply air source is ported to Chamber B of the pneumatic shutoff.When Chamber B pressure exceeds a prescribed limit, it overcomes the spring force acting on the diaphragm. This causes the poppet to stroke to the opposite seat from that shown, preventing inlet air from reaching the reference pressure regulator.

I. Downstream pressure from an external source is ported to the reverse flow check mechanism where it is compared to control pressure acting on the opposite side of the diaphragm. If downstream pressure rises to a predetermined level above the upstream pressure, the poppet is actuated open. This causes the reference pressure downstream of the control orifice to drop to a low level which closes the high stage valve.

J. A relief valve assembly provides pressure regulation in the event of a reference pressure regulator failure.

高压级调节器(图5)

A. 高压级调节器用于调节和关断高压级活门。

B. 高压级调节器包括基准压力调节器、反流止回机构、气动关断装置和安全阀组件。

C. 基准压力调节器包含一个膜片组件和一个由提升阀、导向器、弹簧和固定器组成的提升阀组件。反流止回机构由两部分组成。膜片部分和提升阀部分通过一个L形作动杆连接。作动杆上的密封件将两部分隔开。提升阀部分与周围环境相通,提升阀通常处于弹簧载荷下,处于关闭位置。阀芯的杆臂与L形杠杆的一臂相接触,杠杆的另一臂通过弹簧与膜片保持接触。反流止回机构的膜片部分由两个腔室组成。一个腔室包含一个弹簧,该弹簧迫使膜片与L形杠杆接触。另一个腔室与下游压力连接和下游测试端口相连。

D. 气动关断装置由膜片、弹簧和带两个阀座的球阀组成。一个阀座通向环境压力,另一个阀座通向上游压力。膜片的B腔侧连接到供气压力连接器和供气测试口。

E. 安全阀组件是一个安装在壳体内的弹簧载荷提升阀。在供气、控制和下游压力连接器上设有测试端口,以便在不断开任何管线的情况下测试活门。

F. 来自上游源的进气进入供气压力连接器,并连接到基准压力调节器、反流止回机构和气动关断装置。空气进入基准压力调节器,经过计量提升阀,进入A腔,对基准压力调节器的膜片施加压力。膜片力克服基准压力调节器弹簧的力,将计量提升阀移动到关闭位置。当力平衡时,基准压力调节器的下游压力保持恒定,与进气压力无关。

G. 然后,这个恒定的基准压力通过控制压力连接器输出到高压级活门。

H. 供给气源连接到气动关断阀的B腔。当B腔压力超过规定限值时,它将克服作用在膜片上的弹簧力。这会导致提升阀芯向与所示位置相反的阀座移动,从而阻止进气到达基准压力调节器。

I. 来自外部源的下游压力被输送到反流止回机构,与作用在膜片另一侧的控制压力进行比较。如果下游压力上升到高于上游压力的预定水平,则提升阀芯作动打开。这会导致控制孔下游的基准压力下降到低水平,从而关闭高压级活门。

J. 安全阀组件可在基准压力调节器发生故障时提供压力调节。

Engine Bleed Air Stage Selection

1) Each BACS receives air from either the engine low-stage bleed port or the high-stage bleed port. This selection of the bleed supply is controlled by the high-stage valve and the high-stage regulator setting.

2) During takeoff, climb, and most cruise and hold conditions,the pressure available from the low stage is above the switchover pressure. Air is extracted from the low-stage engine port and is ducted through the bleed air check valve to the pressure regulator and shutoff valve and precooler.

The high-stage valve remains closed during these operating modes.

3) The high stage valve and regulator use a simple bleed pressure sensing control that will use high stage bleed air when 5th stage pressure is below a range of 25-33 psig .As 5th stage pressure increases toward this range, the high stage valve will modulate toward close. When 5th stage pressure reaches this range, the high stage valve will be closed. The reverse of this is true on decreasing pressure. To prevent high temperature and pressure air entering the high stage regulator when 9th stage bleed is not required, the high stage pneumatic shutoff will be in the closed position. The shutoff is actuated when 9th stage pressure is 105-115 psig.

发动机引气级选择

1) 每个BACS从发动机低压级引气口或高压级引气口获取空气。引气源的选择由高压级活门和高压级调节器设置控制。

2) 在起飞、爬升以及大多数巡航和保持状态下,低阶引气口提供的压力高于切换压力。空气从低阶引气口抽出,通过引气单向活门进入压力调节器和关断阀以及预冷器。

在这些操作模式下,高压级活门保持关闭。

3) 当第五级压力低于25-33 psig时,高压级活门和调节器使用简单的引气压力感应控制,此时将使用高压级引气。当第五级压力接近该范围时,高压级活门将逐渐关闭。当第五级压力达到该范围时,高压级活门将关闭。反之,当压力降低时,情况则相反。当不需要第9级引气时,为了防止高温高压空气进入高阶调节器,高阶气动关断装置将处于关闭位置。当第9级压力为105-115 psig时,关断装置将作动。

Reverse Flow Check Operation

1) The reverse flow check mechanism provided in the high-stage regulator is designed to shut off the high-stage valve prior to a flow reversal. This is accomplished by sensing high stage port pressure upstream of the high-stage valve and comparing it to the pressure downstream of the precooler. As long as there is flow in the forward direction, the high stage port pressure upstream of the high-stage valve will be higher than the pressure downstream of the precooler because of the pressure drop between the high stage sense port and precooler outlet.

The reverse-flow check mechanism is designed to vent the opening chamber of the high-stage valve, causing it to close when the pressure drop between the two sense taps is less than 1.0 psi.

2) Additional protection against flow reversal is provided by the reverse flow check device in the bleed air regulator. This device senses pressure upstream of the pressure regulator and shutoff valve and downstream of the precooler. Upon a flow reversal, a switch is actuated which sends a signal to the valve’s shutoff solenoid. Switch actuation occurs at a maximum differential pressure of 0.3 psi in the reverse airflow condition.

反流止回操作

1) 高压级调节器中的反流止回机构设计用于在气流反向之前关断高压级活门。通过检测高压级活门上游的高压级端口压力并将其与预冷器下游的压力进行比较,即可实现这一功能。只要向前流动,高压级活门上游的高压级端口压力就会高于预冷器下游的压力,因为高压级感应端口和预冷器出口之间存在压降。

反流止回机构用于排放高压级活门的打开腔,当两个感应端口之间的压降小于1.0 psi时,高压级活门就会关闭。

2) 引气调节器中的反向流动止回装置可防止气流倒流。该装置可感知压力调节器和关断活门上游以及预冷器下游的压力。一旦发生气流倒流,开关就会作动,向活门的关断电磁阀发送信号。在反向气流条件下,开关作动时的最大压差为0.3 psi。