Check patentability & draft patents in minutes with Patsnap Eureka AI!

Equivalent expansion test system and method for studying two-phase expansion process

A technology of expansion process and testing method, applied in the direction of thermal expansion coefficient of materials, testing of machine/structural components, measuring devices, etc., can solve the problems of long cycle and high cost, and achieve high cost, simple structure, and controllable operating conditions Effect

Active Publication Date: 2021-11-19
XI AN JIAOTONG UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for studying two-phase The equivalent expansion test system and method of the expansion process get rid of the limitations of the structure and operating characteristics of the expander, and can be applied to the internal process test research of two-phase expanders of various types and various working fluids

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
  • Equivalent expansion test system and method for studying two-phase expansion process
  • Equivalent expansion test system and method for studying two-phase expansion process
  • Equivalent expansion test system and method for studying two-phase expansion process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] like Figure 4 As shown, the equivalent expansion test method of the present invention can adopt an open cycle.

[0046] The working fluid output module of the open system is directly connected to the atmosphere.

[0047] 1) Preparations before the start of the test: Check each test equipment to ensure that each test equipment is in good condition; keep the test system at the highest pressure operating condition to test the air tightness of the test system; calibrate the test instruments; Fill reservoir 1 with quality; close the valve on the test system.

[0048] 2) Testing phase:

[0049] Open stop valve 44-46, communicate with vacuum pump 9, vacuum tank 8, constant volume flash chamber 4 and working medium heating tank 3, use vacuum pump 9 to evacuate it; close all valves; open stop valve 42 again, the working medium Inject the working fluid into the heating tank 3, heat the water to the initial temperature; introduce the working fluid into the constant volume flas...

Embodiment 2

[0051] like Figure 5 As shown, the equivalent expansion test method of the present invention can adopt closed loop.

[0052] The working medium output module of the closed cycle recovers the working medium into the liquid storage tank 1, and this embodiment uses the constant volume flash chamber 4 with heating function, so the working medium heating tank 3 is removed.

[0053] 1) Preparations before the start of the test: Check each test equipment to ensure that each test equipment is in good condition; keep the test system at the highest pressure operating condition to test the air tightness of the test system; calibrate the test instruments; Fill reservoir 1 with quality; close the valve on the test system.

[0054] 2) Test stage: after starting the test, first heat the temperature of the constant volume flash chamber 4 to the initial temperature for preheating; open the valves 53 and 54, connect the vacuum pump 9, the vacuum tank 8 and the constant volume flash chamber 4,...

Embodiment 3

[0056] like Image 6 As shown, the equivalent expansion test method of the present invention can adopt a non-moving component cycle.

[0057] The circulation of non-moving parts does not use the working medium pump 2 and the compressor 10, and this embodiment uses the vacuum tank 8 with a condensing device, so the external condenser 11 is removed.

[0058] 1) Preparations before the start of the test:

[0059] Reasonably arrange the vacuum tank 8, the liquid storage tank 1 and the constant volume flash chamber 4 to ensure that the lowest point of the vacuum tank 8 is higher than the highest point of the liquid storage tank 1, and the lowest point of the liquid storage tank 1 is higher than the highest point of the constant volume flash chamber 4. point; check each test equipment to ensure that each test equipment is in good condition; keep the test system at the highest pressure operating condition to test the air tightness of the test system; calibrate the test instruments; ...

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

An equivalent expansion test system and method for studying a two-phase expansion process. The test system includes a flash condition adjustment test module, a working fluid input module, a working fluid output module, and a data acquisition component; the flash condition adjustment test module includes sequentially The connected constant volume flash chamber, mass flow meter, pressure regulating valve and vacuum tank; the data acquisition components include pressure sensors and temperature sensors arranged in the constant volume flash chamber for measuring the gas phase and liquid phase state; the constant volume flash chamber The interior of the chamber is arranged with solid boundaries that are geometrically similar to various types of expanders. The solid boundaries rotate under the drive of the constant-volume flash chamber to provide boundary disturbances that are similar to the motion and geometry of the actual expander. The test method of the present invention is simple and effective, and solves the difficult problems of difficult measurement of key parameters in previous two-phase expansion test research, high cost and long cycle of changing variable speed expansion curves and solid boundary disturbance forms.

Description

technical field [0001] The invention belongs to the field of expansion testing, and in particular relates to an equivalent expansion testing system and method for studying two-phase expansion processes. Background technique [0002] As an important part of my country's energy strategy, it is imminent to improve the utilization rate of low-grade thermal energy such as geothermal energy, industrial waste heat, and solar energy. The two-phase expander is the key equipment in the recovery of waste heat in the triangular flash cycle and the recovery of throttling loss in the refrigeration system. However, the low level of measured efficiency and the lack of efficiency-enhancing technical means are the bottleneck technical problems that restrict the popularization and application of two-phase expanders. The two-phase expansion process inside the expander belongs to the non-equilibrium flash phase transition process. [0003] Expander efficiency is limited by the intensity of the...

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): G01M99/00G01N25/16G01N25/12G01N25/14
Inventor 吴伟烽李晓然张寅李程翊王江峰何志龙
Owner XI AN JIAOTONG UNIV
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