Device and method for testing moisture absorption performance of refrigerating machine oil
A technology of hygroscopic performance and refrigeration oil, which is applied in the research field of laboratory refrigeration oil, can solve the problems of increased water content, not much, and different understandings of the hygroscopic performance of refrigeration oil, so as to shorten the experimental period and improve work efficiency. Effect
Inactive Publication Date: 2020-04-28
PETROCHINA CO LTD
View PDF8 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In addition, due to the large difference in temperature and humidity between the north and the south, refrigeration oil is also prone to moisture absorption problems during transportation and storage, resulting in increased moisture content
[0003] At present, there are not many literature reports on the research on the hygroscopicity of refrigeration oil at home and abroad, and the understanding of the hygroscopicity of various refrigeration oils is also different.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment
[0053] Select deeply refined low-aromatic naphthenic oil N46, highly refined low-aromatic paraffinic base oil N46, PAO semi-synthetic 46, PAO fully synthetic 46, alkylbenzene AB6, polyol ester synthetic base oil 1 # ,2 # and polyether synthetic base oil 1 # ,2 # Nine different types of refrigerating machine oil samples were tested to investigate the hygroscopic performance of different types of refrigerating machine oils. The conventional physical and chemical properties of the test oil samples are shown in Table 1 below:
[0054] Table 1 General physical and chemical properties of samples
[0055]
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
Login to View More Abstract
The invention discloses a method and device for testing the moisture absorption performance of refrigerating machine oil, and the method comprises the following steps: 1, carrying out the vacuumizingof a test oil sample at a certain temperature for a certain period of time, carrying out the sealed storage of the test oil sample and cooling the test oil sample to room temperature, and carrying outthe testing of the moisture content of the test oil sample cooled to the room temperature as a water content value of the test oil sample before testing; and 2, weighing a plurality of grams of the test oil sample treated in the step 1, placing the plurality of grams of the test oil sample in a device for testing the moisture absorption performance of the refrigerating machine oil under set testconditions for a moisture absorption test, continuously storing the plurality of grams of the test oil sample in the device, and determining the moisture content change of the test oil sample before and after the test. The method overcomes the defects of the existing refrigerating machine oil moisture absorption testing technology, improves the evaluation means of the moisture absorption performance of the refrigerating machine oil with different types and quality differences under specific temperature and humidity conditions, greatly shortens the product research and development experiment period, and improves the working efficiency.
Description
technical field [0001] The invention relates to a method and a device for testing the moisture absorption performance of refrigerating machine oil, and belongs to the technical field of laboratory refrigerating machine oil research. Background technique [0002] Water content is one of the important indicators of refrigerating machine oil. All kinds of refrigerating machine oils have higher requirements for water content, because the existence of water will affect the performance of refrigerating machine oil and refrigeration system. During the circulation process, the refrigeration oil will crystallize and precipitate in low-temperature parts such as low-temperature capillaries and expansion valves to form ice blockage, which will affect the circulation of refrigeration oil in the refrigeration compressor. Especially ester oils and polyether refrigeration oils are very hygroscopic. In addition, due to the large difference in temperature and humidity between the north and t...
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
Login to View More IPC IPC(8): G01N31/16G01N33/28
CPCG01N31/16G01N33/28
Inventor 王鹏李雁秋张秀娟张毅涛
Owner PETROCHINA CO LTD