CN116571296A - Method for prolonging defrosting period of cold and hot impact test box - Google Patents
Method for prolonging defrosting period of cold and hot impact test box Download PDFInfo
- Publication number
- CN116571296A CN116571296A CN202310428092.2A CN202310428092A CN116571296A CN 116571296 A CN116571296 A CN 116571296A CN 202310428092 A CN202310428092 A CN 202310428092A CN 116571296 A CN116571296 A CN 116571296A
- Authority
- CN
- China
- Prior art keywords
- cold
- box
- storage box
- hot impact
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009863 impact test Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010257 thawing Methods 0.000 title claims abstract description 9
- 238000005338 heat storage Methods 0.000 claims abstract description 6
- 230000009545 invasion Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000007791 dehumidification Methods 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Clinical Laboratory Science (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a method for prolonging defrosting cycle of a cold and hot impact test box, which adopts a front sea navigation dryer to treat and dry compressed air to below the dew point of minus 60 ℃, and the absolute water content per cubic unit is 0.006 g, so that the compressed air is continuously input into a cold storage box to form micro positive pressure on one hand, the invasion of external air moisture is effectively isolated, and a larger dry air flow is input into the heat storage box on the other hand, so that the heat storage box forms stronger positive pressure, and the negative pressure caused by the volume shrinkage of air when the cold impact is carried out from low temperature to high temperature is timely compensated. The invention can greatly prolong the dehumidification period of the cold and hot impact box from 30-50 times to 800-1000 times, meet continuous test conditions for a plurality of continuous weeks and improve the efficiency.
Description
Technical Field
The invention relates to the field of cold and hot impact test boxes, in particular to a method for prolonging defrosting period of a cold and hot impact test box.
Background
The cold and hot impact test box is necessary test equipment in the material industries such as metal, plastic, rubber, electronics and the like, is used for testing material structures or composite materials, and can detect chemical changes or physical injuries of a sample caused by thermal expansion and contraction in the shortest time through the tolerance degree of the test box under the continuous environment with extremely high temperature and extremely low temperature in the moment. The sample to be tested is placed in the hanging basket, and the sample is quickly moved from the heat storage box to the cold storage box in a mode of up-down or left-right movement of the hanging basket, so that the sample is quickly reduced from extremely high temperature to extremely low temperature, and the process from heat to cold is called a cycle. In a normal case, after thirty-fifty times of circulation, a large amount of frost is condensed on the surface of an evaporator in the cold accumulation box, so that the preset extremely low temperature requirement cannot be met, the test is suspended, a dehumidification program is required to be carried out on the cold accumulation box, the test rhythm is disturbed, and the test efficiency is seriously influenced; a method for prolonging the defrosting period of a cold and hot impact test box is provided.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a method for prolonging the defrosting period of a cold and hot impact test box so as to solve the problems of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a method for prolonging defrosting cycle of cold and hot impact test box comprises the following specific steps: the compressed air of the front sea navigation dryer is processed and dried to be below the dew point of minus 60 ℃, and the absolute water content per cubic unit is 0.006 g, so that the compressed air is continuously input into the cold storage box to form micro positive pressure, the invasion of external air moisture is effectively isolated, and the larger dry air flow is input into the heat storage box to form stronger positive pressure, so that the negative pressure caused by the shrinkage of the chilled volume of the air is timely compensated when the impact from low temperature to high temperature is carried out.
As a preferable technical scheme of the invention, the model of the front sea navigation dryer is QH102S.
The beneficial effects of the invention are as follows: the invention can greatly prolong the dehumidification period of the cold and hot impact box from 30-50 times to 800-1000 times, meet continuous test conditions for a plurality of continuous weeks and improve the efficiency.
Description of the embodiments
The following detailed description of the preferred embodiments of the invention will provide those skilled in the art with a better understanding of the invention with its advantages and features, and thus define the scope of the invention more clearly and clearly.
Examples: the invention provides a technical scheme that: a method for prolonging defrosting cycle of cold and hot impact test box comprises the following specific steps: the compressed air of the front sea navigation dryer is processed and dried to be below the dew point of minus 60 ℃, and the absolute water content per cubic unit is 0.006 g, so that the compressed air is continuously input into the cold storage box to form micro positive pressure, the invasion of external air moisture is effectively isolated, and the larger dry air flow is input into the heat storage box to form stronger positive pressure, so that the negative pressure caused by the shrinkage of the chilled volume of the air is timely compensated when the impact from low temperature to high temperature is carried out.
To extend the defrost cycle, the problem of large amounts of frosting of the cold storage box evaporator of the cold and hot impact test box must be solved, and the frosting of the evaporator has two reasons: 1. the extremely low temperature can lead the air volume in the cold accumulation box to shrink to generate negative pressure, and the negative pressure leads the outside atmosphere to be sucked into the box, so as to bring moisture into the box; 2. when the lifting basket moves from the cold accumulation box to the heat accumulation box, the high-temperature air in the heat accumulation box is rapidly cooled when encountering cold, the volume is violently contracted, and moisture is brought by air suction from the atmosphere.
The invention can greatly prolong the dehumidification period of the cold and hot impact box from 30-50 times to 800-1000 times, meet continuous test conditions for a plurality of continuous weeks and improve the efficiency.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (2)
1. A method for prolonging defrosting period of a cold and hot impact test box is characterized by comprising the following steps of: the method comprises the following specific steps: the compressed air of the front sea navigation dryer is processed and dried to be below the dew point of minus 60 ℃, and the absolute water content per cubic unit is 0.006 g, so that the compressed air is continuously input into the cold storage box to form micro positive pressure, the invasion of external air moisture is effectively isolated, and the larger dry air flow is input into the heat storage box to form stronger positive pressure, so that the negative pressure caused by the shrinkage of the chilled volume of the air is timely compensated when the impact from low temperature to high temperature is carried out.
2. A method of extending a defrost cycle for a cold and hot impact test chamber according to claim 1, wherein: the model of the front sea navigation dryer is QH102S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310428092.2A CN116571296A (en) | 2023-04-20 | 2023-04-20 | Method for prolonging defrosting period of cold and hot impact test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310428092.2A CN116571296A (en) | 2023-04-20 | 2023-04-20 | Method for prolonging defrosting period of cold and hot impact test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116571296A true CN116571296A (en) | 2023-08-11 |
Family
ID=87543690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310428092.2A Pending CN116571296A (en) | 2023-04-20 | 2023-04-20 | Method for prolonging defrosting period of cold and hot impact test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116571296A (en) |
-
2023
- 2023-04-20 CN CN202310428092.2A patent/CN116571296A/en active Pending
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