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

Liquid small flow standard device with double-piston rack and pinion

A standard device, two-piston technology

Inactive Publication Date: 2017-03-29
CHINA JILIANG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional piston flow standard device has disadvantages such as complex structure, long distance of the overall structure of the device, inconvenient transportation, and only a single flowmeter can be verified for each operation, and the efficiency is not high.

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
  • Liquid small flow standard device with double-piston rack and pinion
  • Liquid small flow standard device with double-piston rack and pinion
  • Liquid small flow standard device with double-piston rack and pinion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Such as figure 1 As shown, the double-piston rack-and-gear hydraulic cylinder 27 is fixed on the base 29 by screws, and handles 23 are installed on the left and right sides of the base 29. The servo motor 25 cooperates with the high-precision rack and pinion of the hydraulic cylinder 27 to rotate through keys, and the hydraulic cylinder The left and right water outlets of 27 are all connected to buffer boxes 2, 20 by stainless steel joints 28, 21, and pressure sensors 1, 22 and temperature sensors 3, 19 are respectively installed on both sides of buffer boxes 2, 20; before and after buffer boxes 2, 20 The sides are respectively connected to the solenoid valves 7, 4, 17, 18 through the corrugated hose 5; the water inlets of the solenoid valves 4 and 17 are connected to the water inlet tank 6, and the water inlet tank 6 is placed on the water tank support base 8, and the solenoid valve The water outlets of 7 and 18 are connected with the flowmeters 11 and 14 to be tested ...

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 discloses a double-piston-type rack-gear liquid small-flow standard device. A double-piston-type rack-gear hydraulic cylinder is fixed on a base through screws, a handle is mounted on each of the left side and the right side of the base, a servo motor is in matched rotation with a high-precision gear and rack of the hydraulic cylinder through a key, a left water outlet and a right water outlet of the hydraulic cylinder are connected with a buffering box through stainless steel joints respectively, a pressure sensor and a temperature sensor are mounted on two sides of the buffering box respectively, the front side face and the rear side face of the buffering box are connected with electromagnetic valves through corrugated hoses respectively, a water inlet of the water incoming electromagnetic valve is connected with a water incoming tank, and a water outlet of the water outgoing electromagnetic valve is connected with a detected flowmeter through a right-angle joint. A closed-loop measuring system is realized by taking volume of the hydraulic cylinder as a measuring standard and utilizing a coder to feed displacement and speed of pistons back to a control system.

Description

technical field [0001] The invention relates to a small-flow standard device, in particular to a double-piston rack-gear liquid small-flow standard device. Background technique [0002] In recent years, research work on small liquid flow measurement has been carried out in many scientific research institutes, and the application of small liquid flow measurement and control in semiconductor manufacturing, bioengineering, medical chemical industry and other fields has become more and more common. [0003] At present, the piston type flow standard device is widely used in liquid small flow measurement verification system, which has the advantages of high accuracy and easy automation. However, the traditional piston flow standard device has disadvantages such as complex structure, long distance of the overall structure of the device, inconvenient transportation, and only a single flowmeter can be verified for each operation, which is not efficient. Contents of the invention ...

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): G01F25/00
Inventor 李东升阮晓柯胡佳成竺林坤郭明明
Owner CHINA JILIANG UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com