阅读说明：本技术 一种防尘型航空发动机润滑系统气压随动控制阀 (Pneumatic servo control valve of dustproof aero-engine lubricating system ) 是由 荆帅 韩金在 刘向坤 于 2020-11-05 设计创作，主要内容包括：本申请提供了一种防尘型航空发动机润滑系统气压随动控制阀,包括：安装座,具有控制腔进口及排气口；与安装座相对固定的控制阀壳体,具有控制气源入口；固定于安装座与控制阀壳体所形成的容腔内的阀门导向器,其将容腔分割成锥形阀腔和控制阀腔；分别设置于锥形阀腔和控制阀腔内的锥形阀体和控制阀体,锥形阀体通过锥形阀弹簧支撑,控制阀体通过控制阀弹簧支撑,且锥形阀体设置于控制阀体的导杆上；安装于控制气源入口的除尘组件,除尘组件包括：与控制气源入口连接的除尘器螺母、设置在控制气源螺母上的除尘器、与控制气源导管连接除尘器导管和用于连接除尘器导管和除尘器螺母的除尘器外罩,通过除尘组件能够对进入控制阀内的控制气源进行过滤。(The application provides a dust type aeroengine lubricating system pneumatic servo control valve includes: a mounting base having a control chamber inlet and an exhaust port; a control valve housing fixed relative to the mounting seat and having a control gas source inlet; the valve guider is fixed in a cavity formed by the mounting seat and the control valve shell and divides the cavity into a conical valve cavity and a control valve cavity; the conical valve body and the control valve body are respectively arranged in the conical valve cavity and the control valve cavity, the conical valve body is supported by a conical valve spring, the control valve body is supported by a control valve spring, and the conical valve body is arranged on a guide rod of the control valve body; install in the dust removal subassembly of control air supply entry, the dust removal subassembly includes: the dust remover comprises a dust remover nut connected with a control air source inlet, a dust remover arranged on the control air source nut, a dust remover outer cover connected with a control air source guide pipe, a dust remover guide pipe and a dust remover nut, wherein the dust remover outer cover is used for connecting the dust remover guide pipe and the dust remover nut, and a control air source entering the control valve can be filtered through a dust removing assembly.)

1. The utility model provides a dust protected aeroengine lubricating system pneumatic servo control valve which characterized in that includes:

a mount having a control chamber inlet and an exhaust port;

a control valve housing fixed relative to the mounting block, the control valve housing having a control gas source inlet;

the valve guide is fixed in a cavity formed by the mounting seat and the control valve shell and divides the cavity into a conical valve cavity and a control valve cavity;

the conical valve body is arranged in the conical valve cavity, the control valve body is arranged in the control valve cavity, the conical valve body is supported on one side of the valve guide through a conical valve spring, the control valve body is supported on the other side of the valve guide through the control valve spring, and the conical valve body is arranged on a guide rod of the control valve body; and

a dust removal assembly mounted to the control air supply inlet, the dust removal assembly comprising: the dust remover comprises a dust remover nut connected with a control air source inlet, a dust remover arranged on the control air source nut, a dust remover guide pipe connected with the control air source guide pipe and a dust remover outer cover used for connecting the dust remover guide pipe and the dust remover nut, and the control air source entering the control valve can be filtered through the dust removing assembly.

2. The air pressure servo control valve for a lubrication system of a dust-proof type aircraft engine according to claim 1, wherein the dust catcher has a triangular shape which is inverted in the dust catcher guide pipe, and the side wall of the dust catcher has an inlet hole which forms an obtuse angle with the axis of the dust catcher guide pipe.

3. The air pressure servo control valve for a dust-protection type aircraft engine lubrication system according to claim 2, wherein a gap is formed between the side wall of the dust remover and the dust remover guide pipe, and the gap forms a dust containing flow passage.

4. The air pressure servo control valve for a dust-protection type aircraft engine lubricating system according to claim 3, wherein a dust holding cavity is arranged between the dust collector guide pipe and the dust collector nut, and the dust holding cavity is positioned outside the dust collector and is communicated with the dust holding flow passage.

5. The air pressure servo control valve for a dustproof type aircraft engine lubrication system according to claim 1, wherein the opening pressure control of the control valve body is realized by adjusting the spring rate of a control valve spring, the opening pressure control of the conical valve body is realized by adjusting the spring rate of a conical valve spring, and the spring rate of the control valve spring is greater than the spring rate of the conical valve spring.

6. The air pressure servo control valve for a dustproof type aircraft engine lubricating system according to claim 1, wherein a control valve rod cavity and a conical valve rod cavity are formed between the control valve body and the conical valve body and a valve guider, the valve guider is provided with a control valve air release hole communicated with the control valve rod cavity at one side of the control valve cavity, and the valve guider is provided with a conical valve air release hole communicated with the conical valve rod cavity at one side of the conical valve cavity.

7. The air pressure servo control valve for a dustproof type aircraft engine lubrication system according to claim 6, wherein the valve guide radially extending support portion is provided with a plurality of circumferentially arranged air pressure fitting holes, and the air pressure fitting holes communicate the tapered valve rod cavity and the control valve cavity.

8. The air servo control valve for a lubrication system of a dust-protected aircraft engine according to claim 1, wherein the valve guide is axially positioned in the control valve housing by a collar.

9. The air pressure servo control valve for a lubrication system of a dust-protection type aircraft engine according to claim 1, wherein the installation angle of the control valve is between 0 and 90 degrees.

Technical Field

The application belongs to the technical field of aero-engines, and particularly relates to a pneumatic servo control valve of a dustproof aero-engine lubricating system.

Background

With the continuous development of aero-engines, the lubricating and ventilating system with a fixed flow path cannot meet the requirements of bearing cavity sealing and lubricating oil supply, the operating state of the lubricating and ventilating system needs to be adjusted according to the operating state of the aero-engine, and air pressure is generated along with the operation of a control valve. The air pressure follow-up control valve adopts the air-entraining control of the engine, and impurities in an air source flow into a valve gap to easily cause valve clamping stagnation, so that the working state of a lubricating system is abnormal, and the normal operation of the engine is influenced, therefore, the control valve also needs to have certain dustproof capacity. At present, a dustproof pneumatic servo control valve is not available in an aero-engine lubricating system, and a simple, effective and reliable device for realizing the servo control function of the lubricating system is urgently needed.

Disclosure of Invention

It is an object of the present application to provide a pneumatic servo control valve for a lubrication system of a dust-protected aircraft engine that solves or mitigates at least one of the problems of the background art.

The technical scheme of the application is as follows: a dust protected aero-engine lubrication system pneumatic servo control valve comprising:

a mounting base having a control chamber inlet and an exhaust port;

a control valve housing fixed relative to the mounting block and having a control gas source inlet;

the valve guide is fixed in a cavity formed by the mounting seat and the control valve shell and divides the cavity into a conical valve cavity and a control valve cavity;

the conical valve body is arranged in the conical valve cavity, the control valve body is arranged in the control valve cavity, the conical valve body is supported on one side of the valve guide through a conical valve spring, the control valve body is supported on the other side of the valve guide through the control valve spring, and the conical valve body is arranged on a guide rod of the control valve body; and

a dust removal assembly mounted to the control air supply inlet, the dust removal assembly comprising: the dust remover comprises a dust remover nut connected with a control air source inlet, a dust remover arranged on the control air source nut, a dust remover guide pipe connected with the control air source guide pipe and a dust remover outer cover used for connecting the dust remover guide pipe and the dust remover nut, and the control air source entering the control valve can be filtered through the dust removing assembly.

In this application, the precipitator is triangular in shape, inverted within a precipitator duct, the side walls of the precipitator having inlet holes at an obtuse angle to the axis of the precipitator duct.

In this application, there is a gap between the side wall of the precipitator and the precipitator duct, which gap forms a dust holding flow channel.

In this application, dust holding cavity has between dust remover pipe and the dust remover nut, dust holding cavity is located the outside of dust remover and with dust holding runner intercommunication.

In the application, the opening pressure control of the control valve body is realized by adjusting the spring stiffness of the control valve spring, the opening pressure control of the conical valve body is realized by adjusting the spring stiffness of the conical valve spring, and the spring stiffness of the control valve spring is greater than the spring stiffness of the conical valve spring.

In this application, be formed with control valve pole chamber and taper valve pole chamber between control valve body and taper valve body and the valve director, the valve director is located control valve chamber one side and has the control valve bleed hole in intercommunication control valve pole chamber, the valve director is located taper valve chamber one side and has the taper valve bleed hole in intercommunication taper valve pole chamber.

In this application, be equipped with the atmospheric pressure mating holes that a plurality of circumference were arranged on the supporting part of valve director radial extension, atmospheric pressure mating holes circulation toper valve pole chamber and control valve chamber.

In the present application, the valve guide is axially positioned in the control valve housing by means of a collar.

In the present application, the control valve has a setting angle of 0 to 90 degrees.

The pneumatic servo control valve of the dustproof aero-engine lubricating oil system has the following advantages:

1) the method and the device can freely extract the pressure in the engine flow passage according to the requirement to control the running state of the lubricating system;

2) the self-cleaning control valve can clean the control gas source by itself, so that the clean gas enters the control flow path, and the stable and reliable work of the valve is ensured;

3) the filter has the advantages of simple structure, small volume and strong interface universality, does not need filter materials, can be periodically detached, cleaned and removed from filter materials, has better maintainability, and meets the requirements of light weight and high reliability of an aircraft engine.

Drawings

In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.

Fig. 1 is a schematic view of a pneumatic servo control valve (closed state) of a dust-proof aircraft engine lubricating oil system of the present application.

Fig. 2 is a schematic view of the installation angle of the pneumatic servo control valve of the present application.

FIG. 3 is a schematic view of a dusting assembly of the present application.

Fig. 4 is a schematic view of the installation position of the pneumatic servo control valve of the present application.

Fig. 5 is a schematic view showing an open state of the pneumatic servo control valve according to the present application.

Reference numerals:

100-control valve

110-mounting seat

120-control valve housing

130-conical valve body

140-conical valve spring

150-valve guide

151-air pressure balance hole

152-control valve bleed

153-conical valve air release hole

160-control valve body

161-control valve stem cavity

162-tapered valve stem cavity

170-control valve spring

180-dust removal assembly

181-dust remover nut

182-dust remover outer cover

183-dust remover

184-dust remover pipeline

185-dust-containing runner

186-dust holding cavity

187-dust catcher inlet hole

190-retainer ring

210-exhaust pipe

220-control chamber mounting structure

230-control gas source conduit

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.

As shown in fig. 1 to 5, the present application provides a pneumatic servo control valve 100 for a lubrication system of a dust-proof aircraft engine, which mainly comprises a mounting seat 110, a control valve housing 120, a conical valve body 130, a conical valve spring 140, a valve guide 150, a control valve body 160, a control valve spring 170 and a dust removal assembly 180.

The left side of the mounting block 110 has a control chamber inlet for connection to the control chamber structure 220 and an exhaust port on the upper side for connection to the exhaust line 210.

The control valve housing 120 is fixedly connected to the mounting base 110, and the control valve housing 120 has a control air inlet at the rear for mounting the dust removing assembly 180.

A cavity is formed between the mounting seat 110 and the control valve housing 120, a valve guide 150 is installed in the cavity, and the cavity is divided into two cavities by the valve guide 150, namely a conical valve cavity and a control valve cavity.

A conical valve body 130 for closing off the inlet of the control chamber is arranged in the conical valve chamber, the conical valve body 130 being arranged on a valve guide 150 by means of a conical valve spring 140. A control valve body 160 for closing off the control chamber is provided in the control valve chamber, and the control valve body 160 is provided on the valve guide 150 by a control valve spring 170.

The dust removal component 180 is installed at the inlet of the control air source of the control valve housing 120, the dust removal component 180 comprises a dust remover nut 181, a dust remover outer cover 182, a dust remover 183 and a dust remover pipeline 184, the dust remover nut 181 is connected with the inlet of the control air source, the dust remover pipeline 184 is connected with the control air source pipeline 230, the dust remover 183 is installed between the dust remover pipeline 184 and the dust remover nut 181, the dust remover pipeline 184 is connected with the dust remover nut 181 through the dust remover outer cover 182, and the control air source entering the control valve 100 is filtered through the dust removal component 180.

In the preferred embodiment of the present application, as shown in fig. 2, the duster 183 is substantially in the shape of an open triangle which is inverted in the duster guide duct 184 (mostly in the duster guide duct 184), i.e. the triangular pyramid part faces the intake air flow, and the side wall of the duster 183 has duster inlet holes 187 at an obtuse angle to the axis of the duster guide duct 184, and the duster inlet 187 at the obtuse angle prevents easy entry of foreign matters.

In the above preferred embodiment, a gap is formed between the side wall of the dust catcher 183 and the dust catcher duct 184, and the gap forms the dust containing flow path 185, so that when foreign matters enter, the foreign matters need to enter the dust catcher entrance hole 187 along the dust containing flow path 185.

Further, a dust holding cavity 186 is formed between the dust collector duct 184 and the dust collector nut 182, the dust holding cavity 186 is located outside the dust collector 183 and is communicated with the dust holding flow channel 185, and the dust holding cavity 186 can store dust in the gas.

When the pneumatic servo control valve works, the dust remover pipeline 184 needs to be connected with the control air source conduit 230. The mounting seat 110 is installed on the control chamber installation structure 220, and the installation angle is not greater than 90 degrees, the control chamber inlet of the mounting seat 110 is connected with the control chamber installation structure 220, and the exhaust port of the mounting seat 110 is connected with the exhaust pipe 210.

The control air source from the control air source conduit 230 moves the control valve body 160 to control the position of the conical valve body 130 to control the valve status via bleed air, and the opening and closing of the conical valve body 130 to control the lubrication system status.

Therefore, in the present application, the opening pressure control of the control valve body may be realized by adjusting the spring rate of the control valve spring, the opening pressure control of the conical valve body may be realized by adjusting the spring rate of the conical valve spring, and the spring rate of the control valve spring is greater than the spring rate of the conical valve spring.

In a preferred mode of the above embodiment, the valve guide 150 is provided with a conical valve air release hole 153 at one side of the conical valve body 130, which is used for balancing the internal and external pressures of the conical valve rod cavity 162 of the conical valve body 130 during the actuation process; the valve guide 150 is provided with a control valve bleed hole 152 at one side of the control valve body 160 for balancing the pressure inside and outside the control valve stem chamber 161 during actuation of the control valve body 160.

Further, a circumferentially disposed air pressure balancing hole 151 is formed in the radially extending middle portion of the valve guide 150 for balancing the pressure in the chambers in which the conical valve body 130 and the control valve body 160 are located.

In one embodiment of the present application, the valve guide 150 is axially positioned within the control valve housing 120 using a retainer ring 190.

The mounting angle of the pneumatic servo control valve 100 of the dustproof aero-engine lubricating system provided by the invention is required to be 0-90 degrees.

The pneumatic servo control valve of the dustproof aero-engine lubricating oil system has the following advantages:

1) the method and the device can freely extract the pressure in the engine flow passage according to the requirement to control the running state of the lubricating system;

2) the self-cleaning control valve can clean the control gas source by itself, so that the clean gas enters the control flow path, and the stable and reliable work of the valve is ensured;

3) the filter has the advantages of simple structure, small volume and strong interface universality, does not need filter materials, can be periodically detached, cleaned and removed from filter materials, has better maintainability, and meets the requirements of light weight and high reliability of an aircraft engine.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.