Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hydraulic pump load control system for ground test of aero-engine with two pumps

A load control system and aero-engine technology, which is applied in fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc., can solve problems such as inability to test the vehicle, differences in verification methods, and affect the efficiency of the test run, so as to reduce Quantity, flow stability, and the effect of improving test run efficiency

Active Publication Date: 2018-01-16
CHENGDU ENGINE GROUP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current existing aero-engine hydraulic pump load system has the following shortcomings: each type of engine is only equipped with one set of hydraulic pump load system, and it is a single set of oil supply and return pipelines, and a single set of integrated hydraulic valve group, so it cannot be used for one machine with two The two engine hydraulic pumps of the pump engine are tested on the ground at the same time, resulting in differences between the verification method and the actual working conditions, and affecting the efficiency of the test run

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydraulic pump load control system for ground test of aero-engine with two pumps
  • Hydraulic pump load control system for ground test of aero-engine with two pumps
  • Hydraulic pump load control system for ground test of aero-engine with two pumps

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this embodiment, the hydraulic pump load control system used for the ground test run of an aero-engine with two pumps is composed of the first hydraulic loading cycle control system, the second hydraulic loading cycle control system and the oil cleaning system, and its structural block diagram is as follows figure 1 As shown, the hydraulic schematic diagram is as follows Figure 4 shown.

[0023] The first hydraulic loading cycle control system includes a first working oil tank 1, a first nitrogen pressurization device 15, a first oil inlet pipeline, a first oil return pipeline, a first flow regulator 11 and a first cooler 13; like Figure 4 As shown, the first working oil tank 1 is provided with a first manual oil discharge valve 20, a first manual air release valve 22 and a first safety valve 23, and the first nitrogen pressurizing device 15 is sequentially composed of the first nitrogen cylinder 15-1, The first remote pressure gauge 15-2, the first pressure redu...

Embodiment 2

[0031] In this embodiment, the hydraulic pump load control system used for the ground test run of an aero-engine with two pumps is composed of the first hydraulic loading cycle control system, the second hydraulic loading cycle control system and the oil cleaning system, and its structural block diagram is as follows figure 2 As shown, the hydraulic schematic diagram is as follows Figure 5 shown. The difference from Embodiment 1 is: ① Both the first engine hydraulic pump 3 and the second engine hydraulic pump 4 have overflow ports, so the first working oil tank 1 and the second working oil tank 2 are both provided with overflow pipe joints , during the test run, the overflow port of the first engine hydraulic pump 3 is connected to the overflow pipe joint provided by the first working oil tank 1 through the first overflow pipeline, and the overflow port of the second engine hydraulic pump 4 is connected through the second overflow pipe. The overflow pipeline is connected wi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a hydraulic pump load control system for a one-engine double-pump aero-engine ground test. The hydraulic pump load control system is composed of a first hydraulic loading circulation control system, a second hydraulic loading circulation control system and an oil cleaning system. The first hydraulic loading circulation control system comprises a first work oil tank, a first nitrogen pressurization device, a first oil inlet pipeline, a first oil return pipeline, a first flow adjuster and a first cooler. The second hydraulic loading circulation control system comprises a second work oil tank, a second nitrogen pressurization device, a second oil inlet pipeline, a second oil return pipeline, a second flow adjuster and a second cooler. The oil cleaning system comprises a circulation pump, a first refined oil filter, a first electric switch, a second electric switch, a third electric switch and a fourth electric switch, wherein the first electric switch and the second electric switch are used for controlling the first work oil tank to clean oil, and the third electric switch and the fourth electric switch are used for controlling the second work oil tank to clean the oil.

Description

technical field [0001] The invention belongs to the technical field of ground testing of aero-engines, and in particular relates to a hydraulic pump load control system for ground testing of aero-engines with one machine and two pumps. Background technique [0002] An aircraft engine with two pumps means that an aircraft engine is equipped with two engine hydraulic pumps at the same time. The engine hydraulic pumps can extract engine power and provide kinetic energy for the aircraft hydraulic actuation system, such as for aircraft doors, landing gear, etc. The hydraulic actuation system provides kinetic energy. The hydraulic pump load control system is used to conduct the engine hydraulic pump flow loading test to verify the stability of the working state of the aircraft hydraulic actuation system after the aircraft engine is extracted with part of the power. [0003] One engine with two pumps is a new field. In order to meet the ground test of one engine with two pumps, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/00F15B21/04
CPCF15B11/00F15B21/041
Inventor 佘磊李峥付玉杰冷承祥段国栋高维
Owner CHENGDU ENGINE GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com