Capillary tube thermostatic expansion valve mixing and filling device based on PLC (programmable logic controller)

A technology of thermal expansion valve and capillary tube, which is applied to equipment, mechanical equipment, container filling method, etc. into pressure vessels, can solve the problems of time-consuming adjustment of fixtures, inaccurate filling results, and difficulty in installation of filling parts, etc. High degree of automation, solving mixing and charging accuracy, easy maintenance and improvement effect

Inactive Publication Date: 2011-09-07
杭州中久自控系统有限公司
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most used filling methods are manual filling and single gas filling. The filling equipment has low degree of automation, difficul

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
  • Capillary tube thermostatic expansion valve mixing and filling device based on PLC (programmable logic controller)
  • Capillary tube thermostatic expansion valve mixing and filling device based on PLC (programmable logic controller)
  • Capillary tube thermostatic expansion valve mixing and filling device based on PLC (programmable logic controller)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0035] Before operation, according to the needs of different types of thermal expansion valves, adjust the position of the lower knife seat 43 on the slide rail 31 to adapt to different capillary lengths, adjust the refrigerant pressure reducing valve 5 and helium pressure reducing valve 6 to the specified pressure, and fine-tune the first Throttle valve 7 and second throttle valve 8, insert the thermal expansion valve capillary tube to be charged into the air inlet port 32 on the charging tool 5 during operation, and the PLC control system controls the rear cylinder 26 to push the charging connecting plate 34 to press O The ring 50 compresses the capillary tube of the thermal expansion valve, and sequentially opens and closes the vacuum solenoid valve 46, the helium gas inlet solenoid valve 44, the first refrigerant inlet solenoid valve 45, the second refrigerant inlet solenoid valve 48, and the deflation solenoid valve. The valve 47 is filled, if the qualified indicator light...

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 capillary tube thermostatic expansion valve mixing and filling device based on a PLC (programmable logic controller). The front end fixture table surface of a vertical operating table is provided with a thermostatic expansion valve filling fixture; a panel on the upper part of the fixture table surface is provided with a refrigerant reducing valve, a helium reducing valve, two throttling valves, two glass rotor flow meters, a qualification indicating lamp, a disqualification indicating lamp, a refrigerant pressure meter, a helium pressure meter, a touch screen display, a fluorescent lamp and a power supply switch; a panel at the lower part of the fixture table surface is an operating key region, and is provided with a scram starting button and a front door; the upper part of the vertical operating table is provided with gas circuit pipe fittings, such as a pressure sensor, an electromagnetic valve and the like, and the bottom of the vertical operating table is provided with an electric wiring board; and a PLC control system is adopted as an electric control device, and is respectively connected with the touch screen display, the pressure sensor, the scram starting switch, the qualification indicating lamp, the disqualification indicating lamp and the electromagnetic valve. The device provided by the invention has the advantages of being convenient to install, high in filling accuracy of two types of media and high in automatic degree, and being used for the difficulties of mixing and filling accuracy of the existing thermostatic expansion valve.

Description

technical field [0001] The invention relates to a thermal expansion valve charging device, in particular to a PLC-based capillary thermal expansion valve mixing charging device. Background technique [0002] As an important part of the refrigeration device, the thermal expansion valve is one of the four basic equipment of the refrigeration system. The thermal expansion valve realizes the throttling from the condensing pressure to the evaporating pressure, and controls the flow of the refrigerant. Its working quality directly determines the working quality of the entire refrigeration system. The flow regulation of the refrigerant depends on the vaporization saturation pressure of the filling medium in the temperature sensing bag, so the control of the filling medium is the key process for the qualification of the thermal expansion valve. At present, the filling methods mostly used are manual filling and single gas filling. The filling equipment has low degree of automation, ...

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): F17C5/00
CPCY02B30/72Y02B30/70
Inventor 蔡晋辉谷小红张扬姚燕蒋庆李立新
Owner 杭州中久自控系统有限公司
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