CN108318331A - A kind of cryogenic material Mechanics Performance Testing attemperator and its operating method - Google Patents
A kind of cryogenic material Mechanics Performance Testing attemperator and its operating method Download PDFInfo
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- CN108318331A CN108318331A CN201810443384.2A CN201810443384A CN108318331A CN 108318331 A CN108318331 A CN 108318331A CN 201810443384 A CN201810443384 A CN 201810443384A CN 108318331 A CN108318331 A CN 108318331A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The invention discloses a kind of cryogenic material Mechanics Performance Testing attemperator and its operating methods, including cooling chamber, computer and liquid nitrogen volatilizer, the cooling chamber is equipped with first temperature probe and second temperature probe, the both ends of the cooling chamber are respectively equipped with the first inlet end, second inlet end, first outlet side, second outlet side, the computer is connected by temperature feedback circuit with first temperature probe, the side that the cooling chamber is equipped with the first outlet side is connected by the first heater circuit with computer, the side that the cooling chamber is equipped with the second outlet side is connected by the second heater circuit with computer, first inlet end respectively with liquid nitrogen volatilizer, computer connects, second inlet end respectively with liquid nitrogen volatilizer, computer connects.The present invention by computer accurately control and the setting of cooling circuit keeps heat preservation the temperature inside the box stable, balanced, realize the intelligent control of temperature, while also improving the safety of system.
Description
Technical field
The invention belongs to quiet dynamic cryogenic material technical field of performance test, specifically, being related to a kind of cryogenic material power
Learn performance test attemperator and its operating method.
Background technology
It when test material cryogenic mechanics performance, needs to control the environment temperature of surrounding materials, to eliminate or reduce
Influence of the environment temperature for material mechanical performance.It is directed to this demand, has been developed that a variety of environment temperature control methods,
Two classes can be generally divided into.One kind is the control of integrated environment temperature, that is, builds large-scale temperature chamber, test equipment is all put
It is placed in temperature chamber.This method needs fairly large manufacture and maintenance, and the cost is relatively high, while equipment is in spy for a long time
At different temperature, especially some electronic components are easily damaged.Another kind of is partial temperature control, i.e., only controls test sample etc.
The temperature of relevant position.Equipment volume manufactured by this scheme is smaller, advantage of lower cost, is also easy to the guarantor of test equipment
It supports.But at present apparently, this kind of product is simultaneously immature, generally requires manual control, and stability is poor, and temperature control hysteresis quality is larger, from
Dynamicization and intelligentized level are low.Hu Shisheng etc. has made the liquid nitrogen cooling chamber of a manual control, when use direct servicing fluids
Nitrogen, this device is relatively easy, but cooling accuracy and uniformity is difficult to ensure (referring to the frozen soil dynamic forces such as Hu Shisheng
Learn the experimental study of performance).The researcher in the U.S. laboratories Sandia has developed one and can cool down simultaneously and apply pressure
Device, device freezed using liquefied ammonia, but liquefied ammonia itself volatilizees, and has a certain risk, and cannot it is temperature automatically controlled (referring to
Moo Y.Lee,Arlo Fossum,Laurence S,Costin,etal.Frozen soil material testing and
constitutive modeling).Monstafa Shazly, Vikas Prakash, Bradley A.Lerch devise one
The cooling device for the nitrogen refrigeration that a use is cooled down by liquid nitrogen, although safety is higher, but still cannot be temperature automatically controlled, Bu Nengwei
The equalized temperature of long period is held (referring to Monstafa Shazly, Vikas Prakash, Bradley A.Lerch.High
strain-rate behavior of ice under uniaxial compression)。
Invention content
It is an object of the invention to overcome the shortcomings of temperature regulating device safety in the prior art, uniformity, accuracy etc.,
A kind of cryogenic material Mechanics Performance Testing attemperator is provided and its operating method, the product can be for environment temperatures needed for experiment
Carry out intelligent control.
Its technical solution is as follows：
A kind of cryogenic material Mechanics Performance Testing attemperator, including cooling chamber, computer and liquid nitrogen volatilizer, it is described cold
But chamber is equipped with first temperature probe and second temperature probe, and the both ends of the cooling chamber are respectively equipped with the first inlet end, second
Inlet end, the first outlet side, the second outlet side, the computer are connected by temperature feedback circuit with first temperature probe, institute
It states side of the cooling chamber equipped with the first outlet side to connect with computer by the first heater circuit, the cooling chamber goes out equipped with second
The side at gas end is connected by the second heater circuit with computer, first inlet end respectively with liquid nitrogen volatilizer, computer
Connection, second inlet end are connected with liquid nitrogen volatilizer, computer respectively, first inlet end and liquid nitrogen volatilizer, meter
It is equipped with autocontrol valve between calculation machine and between second inlet end and liquid nitrogen volatilizer, computer.
Further, the first cooling circuit and the second cooling circuit are equipped in the cooling chamber, on the cavity wall of cooling chamber
Just and it is respectively arranged below with the first adding thermal resistance and the second adding thermal resistance, compression bar is respectively equipped at the both ends of the cooling chamber.
Further, described to be respectively equipped between the cavity wall and the first adding thermal resistance, the second adding thermal resistance of cooling chamber
First thermal insulation layer and second thermal insulation layer.
The operating method of cryogenic material Mechanics Performance Testing attemperator of the present invention, includes the following steps：
Step 1 sets up two parallel gas-guide tubes of spiral shape in small-sized incubator, to by the liquid nitrogen just to have gasified,
And make the center at incubator center, and resistance heater is set in the case.Two infrared temperatures of setting are popped one's head in case, are used
With to computer feedback environment temperature and heater, to be heated.
Step 2, two gas-guide tubes one terminate cryogenic gas valve, and the other end leads to outdoor.Another termination liquid of gas valve
Nitrogen tank, to receive low temperature nitrogen.Gas valve is controlled by computer (or microcontroller).
After step 3, set temperature, if set temperature is less than environment temperature in case, computer control valve is opened, to air guide
Low temperature nitrogen is inputted in pipe, by with after environment heat transfer in case, reducing the temperature inside the box, after reaching desired temperature, computer
Control valve reduces ventilatory capacity, makes the temperature inside the box kept in balance.If set temperature is higher than incubator internal temperature, computer
It controls to case internal heater energization heat release, the temperature inside the box is made to improve, when the set temperature is reached, stop to heating installation power supply.
Beneficial effects of the present invention：
The present invention cryogenic material Mechanics Performance Testing attemperator by computer accurately control and cooling circuit
Setting keep heat preservation the temperature inside the box stable, balanced, realize the intelligent control of temperature, while also improving the safety of system.
Description of the drawings
Fig. 1 is the structural schematic diagram of cryogenic material Mechanics Performance Testing attemperator of the present invention.
Fig. 2 is the structural schematic diagram of the cooling chamber of cryogenic material Mechanics Performance Testing attemperator of the present invention.
Specific implementation mode
Technical scheme of the present invention is described in more detail in the following with reference to the drawings and specific embodiments.
Referring to Fig.1, a kind of cryogenic material Mechanics Performance Testing attemperator, including cooling chamber 1, computer 2 and liquid nitrogen are waved
Device 3 is sent out, the cooling chamber 1 is equipped with first temperature probe 4 and second temperature probe 5, and the both ends of the cooling chamber 1 are respectively equipped with
First inlet end 6, the second inlet end 7, the first outlet side 8, the second outlet side 9, the computer 2 pass through temperature feedback circuit 10
It is connected with first temperature probe 4, the cooling chamber 1 is equipped with the side of the first outlet side 8 by the first heater circuit 11 and calculates
Machine 2 connects, and the side that the cooling chamber 1 is equipped with the second outlet side 9 is connected by the second heater circuit 12 and computer 2, described
First inlet end 6 respectively with liquid nitrogen volatilizer 3, computer 2 connect, second inlet end 7 respectively with liquid nitrogen volatilizer 3, meter
Calculation machine 2 connects, between first inlet end 6 and liquid nitrogen volatilizer 3, computer 2 and second inlet end 7 and liquid nitrogen
Autocontrol valve 13 is equipped between volatilizer 3, computer 2.
The temperature that computer is fed back according to set temperature and temp probe voluntarily judges to be heated or cooled, control
The switch of gas valve and heater circuit processed.If required temperature is less than cavity temperature, low temperature nitrogen is passed through to intracavitary until reaching
To required temperature；If cavity temperature is less than required temperature, do not ventilate to intracavitary, while being powered to heater circuit, until reaching
It is required that.
As shown in Fig. 2, the first cooling circuit 14 and the second cooling circuit 15 are equipped in the cooling chamber 1, in cooling chamber 1
The first adding thermal resistance 16 and the second adding thermal resistance 17 are respectively equipped with above and below cavity wall, at the both ends of the cooling chamber 1 point
It She You not compression bar 18.
It is described to be respectively equipped with first between the cavity wall and the first adding thermal resistance 16, the second adding thermal resistance 17 of cooling chamber 1
Thermal insulation layer 19 and second thermal insulation layer 20.
Cooling chamber 1 is directly applying required environment temperature.First inlet end 6 and the second inlet end 7 from both direction to
It is passed through low temperature nitrogen, after the heat exchange of circuit, is discharged from gas outlet by exhaust gas.Adding thermal resistance is evenly distributed on wall inner wall,
Electrified regulation when needing.Temp probe is freezed or is heated with selection to feed back the temperature inside the box to computer.Outside laying is heat-insulated
Layer is keeping the temperature.Cooling circuit helix shape portion in the cavity is sample reserved space.
The operating method of cryogenic material Mechanics Performance Testing attemperator of the present invention, includes the following steps：
Step 1 sets up two parallel gas-guide tubes of spiral shape in small-sized incubator, to by the liquid nitrogen just to have gasified,
And make the center at incubator center, and resistance heater is set in the case.Two infrared temperatures of setting are popped one's head in case, are used
With to computer feedback environment temperature and heater, to be heated.
Step 2, two gas-guide tubes one terminate cryogenic gas valve, and the other end leads to outdoor.Another termination liquid of gas valve
Nitrogen tank, to receive low temperature nitrogen.Gas valve is controlled by computer (or microcontroller).
After step 3, set temperature, if set temperature is less than environment temperature in case, computer control valve is opened, to air guide
Low temperature nitrogen is inputted in pipe, by with after environment heat transfer in case, reducing the temperature inside the box, after reaching desired temperature, computer
Control valve reduces ventilatory capacity, makes the temperature inside the box kept in balance.If set temperature is higher than incubator internal temperature, computer
It controls to case internal heater energization heat release, the temperature inside the box is made to improve, when the set temperature is reached, stop to heating installation power supply.
The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention is without being limited thereto, it is any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are each fallen in protection scope of the present invention.
Claims (4)
1. a kind of cryogenic material Mechanics Performance Testing attemperator, it is characterised in that：Including cooling chamber (1), computer (2) and liquid
Nitrogen volatilizer (3), the cooling chamber (1) are equipped with first temperature probe (4) and second temperature probe (5), the cooling chamber (1)
Both ends be respectively equipped with the first inlet end (6), the second inlet end (7), the first outlet side (8), the second outlet side (9), the meter
Calculation machine (2) is connected by temperature feedback circuit (10) and first temperature probe (4), and the cooling chamber (1) is equipped with the first outlet side
(8) side is connected by the first heater circuit (11) and computer (2), and the cooling chamber (1) is equipped with the second outlet side (9)
Side is connected by the second heater circuit (12) and computer (2), first inlet end (6) respectively with liquid nitrogen volatilizer (3),
Computer (2) connects, and second inlet end (7) connects with liquid nitrogen volatilizer (3), computer (2) respectively, first air inlet
It holds between (6) and liquid nitrogen volatilizer (3), computer (2) and second inlet end (7) and liquid nitrogen volatilizer (3), calculating
Autocontrol valve (13) is equipped between machine (2).
2. cryogenic material Mechanics Performance Testing attemperator according to claim 1, it is characterised in that：The cooling chamber
(1) the first cooling circuit (14) and the second cooling circuit (15) are equipped in, above and below the cavity wall of cooling chamber (1) respectively
Equipped with the first adding thermal resistance (16) and the second adding thermal resistance (17), compression bar (18) is respectively equipped at the both ends of the cooling chamber (1).
3. cryogenic material Mechanics Performance Testing attemperator according to claim 2, it is characterised in that：It is described in cooling chamber
(1) first thermal insulation layer (19) and are respectively equipped between cavity wall and the first adding thermal resistance (16), the second adding thermal resistance (17)
Two thermal insulation layers (20).
4. the operating method of cryogenic material Mechanics Performance Testing attemperator described in claim 1, it is characterised in that：Including following
Step：
Step 1 sets up two parallel gas-guide tubes of spiral shape in small-sized incubator, to by the liquid nitrogen just to have gasified, and makes
Resistance heater is arranged at incubator center in the center in the case；Two infrared temperatures of setting are popped one's head in case, to
Computer feedback environment temperature and heater, to be heated；
Step 2, two gas-guide tubes one terminate cryogenic gas valve, and the other end leads to outdoor；Another termination liquid nitrogen container of gas valve,
To receive low temperature nitrogen；Gas valve is controlled by computer or microcontroller；
After step 3, set temperature, if set temperature, less than environment temperature in case, computer control valve is opened, guide tracheal strips
Low temperature nitrogen is inputted, by with after environment heat transfer in case, reducing the temperature inside the box, after reaching desired temperature, computer control
Valve reduces ventilatory capacity, makes the temperature inside the box kept in balance；If set temperature is higher than incubator internal temperature, computer control
To case internal heater energization heat release, the temperature inside the box is made to improve, when the set temperature is reached, stopped to heating installation power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443384.2A CN108318331A (en) | 2018-05-10 | 2018-05-10 | A kind of cryogenic material Mechanics Performance Testing attemperator and its operating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443384.2A CN108318331A (en) | 2018-05-10 | 2018-05-10 | A kind of cryogenic material Mechanics Performance Testing attemperator and its operating method |
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| CN108318331A true CN108318331A (en) | 2018-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470578A (en) * | 2018-12-28 | 2019-03-15 | 内蒙古工业大学 | A kind of regulation low temperature environment testing apparatus and test method |
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| CN102331374A (en) * | 2011-06-09 | 2012-01-25 | 振石集团东方特钢股份有限公司 | Low-temperature tensile test device for metal material |
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Patent Citations (8)
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|---|---|---|---|---|
| CN1888852A (en) * | 2006-07-27 | 2007-01-03 | 中国科学院力学研究所 | Method and apparatus for hand controlling temperature antivibrating support low-temperature environment stretching and pressing test |
| CN102331374A (en) * | 2011-06-09 | 2012-01-25 | 振石集团东方特钢股份有限公司 | Low-temperature tensile test device for metal material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470578A (en) * | 2018-12-28 | 2019-03-15 | 内蒙古工业大学 | A kind of regulation low temperature environment testing apparatus and test method |
| CN109470578B (en) * | 2018-12-28 | 2024-02-27 | 内蒙古工业大学 | Test device and test method for regulating low-temperature environment |
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Application publication date: 20180724 |