Calibration method of engine flowmeter

A calibration method and flowmeter technology, applied in liquid/fluid solid measurement, measurement devices, instruments, etc., can solve problems such as inability to engine flowmeter, calibration, etc.

Inactive Publication Date: 2016-08-17
INHALE HYPERSONIC TECH RES CENT UNIT 63820 OF PLA
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can effectively solve the problem that the existing flo

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
  • Calibration method of engine flowmeter
  • Calibration method of engine flowmeter
  • Calibration method of engine flowmeter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0055] A calibration method for an engine flowmeter, the steps are as follows

[0056] 1. Establish the same calibration conditions as the use environment

[0057]The engine generally works in an environment where the total temperature of the incoming flow is above 1000K, and it is necessary to use a wind tunnel to establish calibration conditions consistent with the operating environment. The wind tunnel uses hydrogen and oxygen-enriched air combustion heating to obtain the required test flow. The simulated flow parameters include: total temperature, total pressure and Mach number, and choose different oxygen-enriched pipe gas distribution parameters and oxygen-enriched throats. Diameter, squeeze hydrogen supply pressure and hydrogen throat diameter and nozzle, can get different test flow conditions.

[0058] Second, the establishment of engine flow measurement system

[0059] Place two channel flowmeters respectively in the downstream of the oxygen-enriched air throat and ...

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 provides a calibration method of an engine flowmeter, and belongs to the technical field of flow measurement. The method comprises the following steps that 1, the calibration condition which is the same as that of the usage environment is established; 2, an engine flow measurement system is established; 3, a standard engine flow is obtained by means of a channel flowmeter; 4, engine flowmeter calibration data processing is conducted; 5, engine flowmeter calibration system uncertainty degree analysis is conducted. According to the calibration method of the engine flowmeter, the calibration problem of the engine flowmeter can be solved, the calibration coefficient and the uncertainty degree are provided, and the calibration method is mainly used for calibration of the engine flowmeter.

Description

technical field [0001] The invention belongs to the technical field of flow measurement Background technique [0002] Capture flow is one of the important performance parameters of the engine, and its accuracy is of great significance to the design and performance evaluation of the engine. Before the performance test of the engine, the intake port and the flow measuring device (referred to as the flowmeter) are usually connected together in a direct connection, and the capture flow is obtained through the test method. Therefore, the measurement accuracy of the flowmeter directly determines the capture flow measurement. accuracy. As with other types of sensors, the best way to obtain the measurement accuracy of a flow meter is to calibrate it. [0003] According to the existing calibration means, the method of flowmeter calibration can be broadly divided into direct calibration method and indirect calibration method according to the calibration principle. The direct calibr...

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
IPC IPC(8): G01F25/00
CPCG01F25/15
Inventor 邓维鑫杨顺华刘伟雄杨样晏至辉李宏斌任虎肖保国王西耀张穹洲田野邢建文张顺平李季
Owner INHALE HYPERSONIC TECH RES CENT UNIT 63820 OF PLA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap