Supercharge Your Innovation With Domain-Expert AI Agents!

In-line measurement of nitrite content in metalworking fluids

A metal processing, nitrite technology, used in measuring devices, color/spectral property measurement, testing moving fluids/granular solids, etc., can solve problems such as low efficiency and high labor intensity

Pending Publication Date: 2022-04-01
CASTROL LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, where periodic testing is required, this manual approach can be labor-intensive and thus inefficient

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
  • In-line measurement of nitrite content in metalworking fluids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0087] figure 1 A schematic representation of an exemplary apparatus is shown wherein the sample inlet 2 connected in use to a source of metalworking fluid to be monitored is connected via valve V5 to a sampling volume / flow path 42 via valve V6 Connected to the vent 4 and outlet 6, which may be arranged as return lines to return the fluid to the metalworking fluid source from which the sample was obtained. Valves V5 and V6 are operable to hold a volume of sample in sample volume 42 .

[0088] An inline filter separates valve V5 from calibration valve V4 , which is operable to direct sample via flow path 16 for off-line calibration, or via flow path 14 . The flow path 14 is connected to the inlet of the reaction vessel 18 via a two-channel sample pump P2. Thus, the dilution fluid can be introduced into the reaction vessel 18 by the pump P2 at the same time as the sample.

[0089] The diluent inlet 8 is connected to a source of diluent fluid, such as water, and the diluent in...

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

There is provided an apparatus for in-line monitoring of nitrite content in a metalworking fluid, the apparatus comprising: a sample inlet for receiving a sample of the metalworking fluid; a diluent inlet for receiving a diluent fluid; a reagent inlet for receiving a photoactive reagent; a reaction volume for containing a sample mixture in fluid communication with the sample inlet, the diluent inlet, and the reagent inlet; a photometer for monitoring the sample mixture; and a flow control system for controlling fluid flow in the device to: selectively introduce a sample, a dilution fluid, and / or a photoactive reagent from the respective inlets to the reaction volume to form a sample mixture; retaining the sample mixture in the reaction volume; and discharging the sample mixture from the reaction volume.

Description

technical field [0001] The invention relates to on-line measurement of nitrite content in metal processing fluid. In particular, the present invention relates to an apparatus and process for photometrically measuring the nitrite content of metalworking fluids. Background technique [0002] Metalworking fluids are used in workshops around the world for the cutting and forming of metals. Their primary purpose is to cool and lubricate tools, workpieces and machines, inhibit corrosion, remove debris, and aid in the cutting, grinding and cleaning of metals. There are many different types of metalworking fluids. Metalworking fluids, and especially aqueous metalworking fluids, often contain nitrites, and in some cases it is necessary to measure the nitrite content of such fluids, for example to meet regulatory requirements. [0003] Monitoring of nitrite levels in metalworking fluids can be accomplished by taking samples of the fluid from the system to be monitored and evaluatin...

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 Applications(China)
IPC IPC(8): G01N21/31G01N1/38
CPCG01N31/227G01N1/38G01N2001/2064G01N2001/205G01N1/2035G01N21/78G01N21/94G01N21/31G01N21/77G01N21/85
Inventor A·菲斯汀J·格尔茨M·洛斯
Owner CASTROL LTD
Features
  • R&D
  • 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