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

low pressure signal

A low-pressure pressure and annunciator technology, applied in the measurement of elastic deformation force by measuring gauges, etc., can solve the problems of inability to measure low-pressure pressure, unable to meet pressure requirements, etc., and achieve the effect of light weight, compact structure and low detection pressure.

Active Publication Date: 2019-06-28
WUHAN AVIATION INSTR
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing mechanical annunciators cannot measure low-pressure pressure, and cannot meet the pressure requirements under special low-pressure conditions, such as 300kPa

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
  • low pressure signal
  • low pressure signal
  • low pressure signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] The low pressure signal device is composed of an input part, an elastic sensitive element, a transmission part, a contact part and an electrical output part.

[0052] 1) Input part

[0053] The input part consists of an O-ring 1, a sealing sheet 2, a nozzle assembly 3, a diaphragm top plate 5, a nozzle cover 6, a housing 13, a pressure plate 30, a cylindrical pin 32 and a set screw. O-ring 1 is a rubber sealing ring with a circular cross section, the diameter of the circular cross section is Φ1.8mm, and the material is made of fluorosilicone G409; the sealing sheet 2 is a circle processed by a polytetrafluoroethylene plate with a thickness of 0.5mm. Shaped parts with a diameter of Φ29.4mm; nozzle assembly 3 consists of a nozzle and a number of buffer plates with small holes, the nozzle is processed by aluminum alloy 2A12 rods, the inside is a stepped hole, and the bottom interface is M12×1 -6h thread; buffer plate 37 is processed by stainless steel 1Cr18Ni9Ti plate, 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 low-pressure pressure signal device, which comprises an input component, an elastic sensitive element, a transmission component, a contact component and an electrical output component, wherein the input component comprises an O-shaped ring (1), a sealing piece (2), a connecting pipe nozzle assembly (3), a diaphragm top plate (5), a connecting pipe nozzle cover plate (6), a shell (13), a pressing plate (30), cylindrical pins (32) and set screws (8); the elastic sensitive element comprises a spring (7); the transmission component comprises an ejection rod (4), a spring cover plate II (9), an ejection head (22), a spring cover plate I (28), countersunk-head screws (29) and a spring washer (31); and the contact component comprises a bushing ring (10), a bushing (11), a phi2 small washer (12), hexagonal nuts (17), phi2 spring washers (18), a lower contact piece assembly (19), an upper contact piece assembly (20) and a stud (21). The low-pressure pressure signal device has the advantages of low detection pressure, compact structure, light weight and the like, and is especially suitable for a low-voltage environment.

Description

technical field [0001] The invention belongs to the technology of pressure measuring instruments, and in particular relates to a low pressure signal device. Background technique [0002] Pressure signalizers are widely used in various airborne equipment of aircraft to provide pressure switch signals. According to the working principle, the pressure signal can be divided into two types: the first type is the mechanical signal, the principle is to use the deformation of the sensitive components such as the end tube and the diaphragm to push the connection of the micro switch or the contact piece through the transmission mechanism. Or off, so as to output the switch signal; the second type is an electronic annunciator, whose principle is to use silicon piezoresistive to measure the system pressure, output a voltage signal, and determine the on-off of the relay by comparing with the reference voltage, so as to control the pressure signal device on and off. Existing mechanical ...

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): G01L1/04
CPCG01L1/04
Inventor 叶浩肖建萍魏中良
Owner WUHAN AVIATION INSTR
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