CN103691500B - A kind of controlled flexible cavity high/low temperature environmental simulation system - Google Patents
A kind of controlled flexible cavity high/low temperature environmental simulation system Download PDFInfo
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- CN103691500B CN103691500B CN201310728470.5A CN201310728470A CN103691500B CN 103691500 B CN103691500 B CN 103691500B CN 201310728470 A CN201310728470 A CN 201310728470A CN 103691500 B CN103691500 B CN 103691500B
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Abstract
A kind of controlled flexible space high/low temperature environmental simulation system, comprises low temperature cold source feedway, vaporizer, electric heater, upper plenum chamber, lower plenum chamber, soft cover, upper fixing element, lower fixture, temperature sensor, data collecting instrument, elevator gear, controller, some valves and some pipelines.Soft cover is composited by multilayer metallized film reflecting layer and fibrous paper interval, and its top and upper plenum chamber are tightly connected by upper fixing element, and bottom and lower plenum chamber are tightly connected by lower fixture, forms the sealed chamber of a variable volume.Low temperature cold source feedway provides low temperature cold source, by vaporizer and valve, makes the Wen Chang space of soft cover be in low temperature; Electric heater is used for heating, makes the Wen Chang space of soft cover be in high temperature.Elevator gear is connected by lower fixture and lower plenum chamber with soft cover, to drive soft cover, upper and lower reciprocating motion occurs.The present invention achieves the generation of flexible high/low temperature temperature field and controlled with lower cost and simple technological process.
Description
Technical field
The present invention relates to a kind of flexible cavity simulation system of high and low temperature environment of controlled temperature, particularly relate to a kind of variable volume generating means that can realize the wide warm area high/low temperature temperature field of-100 DEG C ~+130 DEG C.
Background technology
In fields such as Aero-Space, automobile making and power electronics, often need resistance test, tests and degradation etc. that product component or complete machine are carried out under high temperature or cryogenic conditions.Therefore need to investigate the adaptability of this product under extreme environment operating mode or survival ability comprehensively.The development of the Space Docking Mechanism in such as solar-system operation, product experiences the motion under the high/low temperature condition of ground and Survival properties object test with regard to needing before formal transmitting.The special character of this kind of application is, owing to there is mechanical movement in docking operation, all for periphery electronic equipments and other measuring instruments etc. all can not be put in high and low temperature environment again.Therefore, must set up and allow spatially to move, the flexibility temperature field that namely volume change occurs could meet requirement target product being provided to local high and low temperature environment.
The high/low temperature environmental simulation device that current great majority are openly reported is all the airtight box like space of fixed structure, application scenario aforesaid space having motion occur cannot be met, as publication number be " small high-low temperature tester " of CN102941131, " GDJS (photoelectric type) " of publication number to be " a kind of Novel bunk incubator testing machine " of CN2914080 and publication number be CN301704076S.Further, publication number is that " high-low temperature test chamber of soft variable volume " of CN102091663 achieves transfiguration accumulated temperature field by drive unit and flexible material, but its applied environment is limited in the warm area scope of-50 DEG C ~+50 DEG C, and be provided with the labyrinths such as evaporation spray thrower in systems in which, device is huge, cost is higher, is not suitable for miniaturization, low cost, fast Test Application.
Therefore, those skilled in the art is devoted to the simulation system developed a kind of easy novel capacity flexible high/low temperature temperature field generation and maintain, to meet the high and low temperature environment test request of general wide warm area, capacity.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide a kind of flexible cavity high/low temperature environmental simulation system.
For achieving the above object, the invention provides a kind of controlled flexible cavity high/low temperature environmental simulation system, it is characterized in that, comprise low temperature cold source feedway (1), vaporizer (2), upper plenum chamber (3), upper fixing element (4), soft cover (5), lower plenum chamber (6), lower fixture (7), elevating table device (8), control cabinet (9), electric heater (10), blower fan (11), gas reservoir (12), temperature sensor (13), micro-pressure sensor (14), aviation connector (15), data collecting instrument (16), computer (17), some pipelines and some valves,
Described low temperature cold source feedway (1) is for providing low temperature cold source; Described vaporizer (2) is for being warming up to room temperature by described low temperature cold source; The top of described upper plenum chamber (3) is provided with admission line (31), return-air duct (32) and discharge duct (33); The bottom of described lower plenum chamber (6) is provided with admission line (61) and discharge duct (62);
Described low temperature cold source feedway (1), described vaporizer (2), described upper plenum chamber (3), described lower plenum chamber (6), described electric heater (10), to be connected by described pipeline between described blower fan (11) and described gas reservoir (12);
The output of described low temperature cold source feedway (1) is divided into two-way, and described valve (20) of leading up to is connected with the input port of described valve (21) with described vaporizer (2); Leading up to described valve (20) and described valve (21) is linked into the admission line (31) of described upper plenum chamber (3);
The output of described vaporizer (2) is divided into two-way: described valve (23) of leading up to introduces the admission line (61) of described lower plenum chamber (6) through described blower fan (11) and described electric heater (10); One tunnel is linked into described upper plenum chamber (3);
The return-air duct (32) of described upper plenum chamber (3) is linked into the admission line (61) of described lower plenum chamber (6) through described gas reservoir (12), described blower fan (11) and described electric heater (10) by described valve (24);
The top of described soft cover (5) is tightly connected by fixed (4) and described upper plenum chamber (3); The bottom of described soft cover (5) is tightly connected by described lower fixture (7) and described lower plenum chamber (6); Described elevating table device (8) and described lower fixture (7) are fixed together; Described elevating table device (8) drives described soft cover (5) to move up and down;
Described temperature sensor (13) is arranged in the warm field interior volume of described soft cover (5), and is connected to data collecting instrument (16) from the top of described upper plenum chamber (3) by aviation connector (15) extraction;
Data collecting instrument (16) is responsible for the signal of collecting temperature sensor (13) and is converted to data and sends computer (17) to.
Further, described low temperature cold source feedway (1) adopts with pressure from supercharging liquid nitrogen storage tank, and described low temperature cold source is liquid nitrogen.The warm field space temperature of soft cover (5) can be made like this to reach-100 DEG C.
Further, described upper plenum chamber (3) and described lower plenum chamber (6) are made up of corrosion resistant plate; And the bottom of described upper plenum chamber (3) and the top of described lower plenum chamber (6) are orifice plates.
Further, the percent opening of the orifice plate of described upper plenum chamber (3) and described lower plenum chamber (6) is 30%.
Further, described soft cover (5) is composited by multilayer metallized film reflecting layer and fibrous paper interval, and the surfaces externally and internally of described soft cover (5) is coated with sealant and waterproofing protection fabric.
Further, fixed (4) and lower fixture (7) are made up of cork or glass-reinforced plastic material.
Further, one end and the air of described micro-pressure sensor (14) are connected, and the other end is connected with the stainless steel tubule drawn from described soft cover (5) inner space by flexible pipe, for measuring the pressure reduction of described soft cover (5) and air.
Further, described elevating table device (8) integrated installation cylinder, controller, counter, limit switch and mechanical guide.
Further, described control cabinet (12) is for controlling described simulation system, and described control cabinet (12) comprises the switch of the controller of described cylinder, counter, limit switch and described electric heater (15).
Advantage and the good effect of a kind of controlled flexible space high/low temperature environmental simulation system of the present invention are:
1., compared to the high and low temperature environment generating means of traditional fixed structure dead space, the present invention can be used for the application scenario of the temperature field, capacity high/low temperature field that there is mechanical movement.
2. high/low temperature cavity of the present invention is adjustable within the scope of the wide warm area of-100 DEG C ~+130 DEG C, meets the extreme high and low temperature environment testing requirement in the field such as Aero-Space, power electronics.
3. the soft cover as flexible heat-insulation and heat-preservation critical piece adopts the multilayer heat-insulation material of metallized film+fiber insulation paper, meets to work long hours in the warm field environment of-100 DEG C ~+130 DEG C and outer surface does not condense, not obvious frosting.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the structural representation of a flexible space high/low temperature environmental simulation system of the present invention;
Fig. 2 is the generalized section of the upper plenum chamber of a flexible space high/low temperature environmental simulation system of the present invention;
Fig. 3 is the upward view of the upper plenum chamber of a flexible space high/low temperature environmental simulation system of the present invention;
Fig. 4 is the generalized section of the lower plenum chamber of a flexible space high/low temperature environmental simulation system of the present invention;
Fig. 5 is the top view of the lower plenum chamber of a flexible space high/low temperature environmental simulation system of the present invention;
Fig. 6 is the connection diagram of the upper fixing element of a flexible space high/low temperature environmental simulation system of the present invention, upper plenum chamber and soft cover;
Fig. 7 is the schematic shapes of the elevating table device of a flexible space high/low temperature environmental simulation system of the present invention soft cover when being in top dead centre state;
Fig. 8 be the elevating table device of a flexible space high/low temperature environmental simulation system of the present invention mediate dotted state time soft cover schematic shapes;
Fig. 9 is the schematic shapes of the elevating table device of a flexible space high/low temperature environmental simulation system of the present invention soft cover when being in lower dead center state;
Figure 10 is the distribution schematic diagram of the soft case temperature sensor of a preferred embodiment of a flexible space high/low temperature environmental simulation system of the present invention.
Detailed description of the invention
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment is implemented under with technical solution of the present invention prerequisite, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
One of the present invention controlled flexible space high/low temperature environmental simulation system as shown in Figure 1, comprise low temperature cold source feedway 1, vaporizer 2, upper plenum chamber 3, upper fixing element 4, soft cover 5, lower plenum chamber 6, lower fixture 7, elevating table device 8, control cabinet 9, electric heater 10, blower fan 11, gas reservoir 12, temperature sensor 13, micro-pressure sensor 14, aviation connector 15, data collecting instrument 16, input duct 18, computer 17, input duct 18, admission line 19, liquid valve 20, first liquid nitrogen control valve 21, second liquid nitrogen control valve 22, intake valve 23, return-air valve 24, upper air bleeding valve 25, lower air bleeding valve 26.
Wherein, the admission line 61 of the admission line 31 of input duct 18, admission line 19, upper plenum chamber 3, return-air duct 32 and lower plenum chamber 6 all adopts thermo-insulating pipe line.In the present embodiment, thermo-insulating pipe line selects stainless steel bellows, outsourcing multilayer insulation insulation material.
In the present embodiment, low temperature cold source feedway 1 is with pressure from supercharging liquid nitrogen container; Low temperature cold source is liquid nitrogen.Liquid valve 20 is installed, to regulate the flow of liquid nitrogen outlet from the outlet of supercharging liquid nitrogen storage tank.
The liquid nitrogen of low temperature cold source feedway 1 is after booster jar is regulated by liquid valve 20, and punish stream in input duct 18, a road is connected with the input port of vaporizer 2 through the second liquid nitrogen control valve 22; The admission line 31 of plenum chamber 3 is directly introduced through the first liquid nitrogen control valve 21 in one tunnel.
Vaporizer 2 adopts the sky bath vaporizer of aluminium material, and the liquid nitrogen stream of low temperature, through vaporizer 2, is heated up by fin and surrounding air heat exchange, is the nitrogen of room temperature by liquid nitrogen vaporization.The nitrogen of room temperature is shunted in the exit of vaporizer 2: a road is connected with blower fan 11 and electric heater 10 by admission line 19 through intake valve 23, the admission line 61 of the lower plenum chamber 6 of finally access; The admission line 31 of plenum chamber 3 is directly accessed on one tunnel.
Upper plenum chamber 3 is concrete as shown in Figure 2, and upper plenum chamber 3 is made up of corrosion resistant plate, and its top is provided with admission line 31, return-air duct 32 and discharge duct 33; Bottom is for being provided with the orifice plate being uniformly distributed perforate, and the percent opening of the perforate 34 of orifice plate is 30%, as shown in Figure 3.Muffler 32 is connected with the input port of gas reservoir 12 by return-air valve 24; Enter the mixture for low temperature liquid nitrogen and nitrogen at room of admission line 31, the mixed proportion of low temperature liquid nitrogen and nitrogen at room is controlled by the first liquid nitrogen control valve 21 and the second liquid nitrogen control valve 22; Discharge duct 33 directly accesses air, for Exhaust Gas.The low temperature nitrogen being entered upper plenum chamber 3 by admission line 31, after upper plenum chamber 3 cushions, is entered in soft cover (5) by the orifice plate uniform divided flows bottom upper plenum chamber 3.
Lower plenum chamber 6 is concrete as shown in Figure 4, and lower plenum chamber 6 is also made up of corrosion resistant plate, is provided with admission line 61 and discharge duct 62 bottom it; Its top is be provided with the orifice plate being uniformly distributed perforate, and the percent opening of orifice plate perforate 63 is 30%, as shown in Figure 5.The admission line 61 of lower plenum chamber 6 is connected with the delivery outlet of electric heater 10; Discharge duct 62 is directly connected with air, for Exhaust Gas.By admission line 61 enter heated by electric heater 10 after high temperature air inlet entered in soft cover 5 by the orifice plate uniform divided flows at lower plenum chamber 6 top after lower plenum chamber 6 cushions.
Soft cover 5 is tightly connected by upper fixing element 4 with upper plenum chamber 3; Soft cover 5, lower plenum chamber 6 and elevating table device 8 are tightly connected by lower fixture 7.Wherein, upper fixing element 4 is ring-type hardwood.The surrounding of the ring-type hardwood of upper fixing element 4 opens hole, by bolt by soft cover 5 and the fixed seal connection of upper plenum chamber 3.As shown in Figure 6, with diameter be the flexible copper tubing 41 of 6mm by soft cover 5 banding in the groove of the ring-type hardwood periphery of upper fixing element 4.Lower fixture 7 is solid cylinder, and hole is opened at the edge along solid cylinder, by bolt by soft cover 5 and the fixed seal connection of lower plenum chamber 6, mode and upper fixing element similar; Further, lower fixture 7 has fresh air inlet and vent corresponding to the position of the admission line 61 bottom lower plenum chamber 6 and discharge duct 62.The bottom of lower fixture 7 is connected with the top of elevating table device 8, and under elevating table device 8 drives in displacement process, fixture 7 pumps.
Soft cover 5 is heat-insulation and heat-preservation parts of flexible high/low temperature field generating means cavity.By the flexible multi-layered heat-insulating material of reflecting layer and spacer layer compound, and the sealant covering high-low temperature resistant is outward formed.The multilayer heat-insulation material of 30 layers of metallized film+30 layers of low-temperature thermal insulation paper selected by the heat-insulating material of the soft cover 5 of the present embodiment, and reflecting layer and spacer layer are superimposed.Sealant adopts Kapton, can protect high-low temperature resistant, waterproof again.
Elevating table device 8 comprises cylinder, controller, limit switch and mechanical guide.
In the present embodiment, elevating table device 8 is by the compressed air of 0.5MPa gauge pressure, and driving cylinder completes the lifting action along mechanical guide direction.Controller 9 and limit switch acting in conjunction, achieve the unidirectional or reciprocating motion of elevating table device 8 in 300mm stroke.Unidirectional or the reciprocating motion of elevating table device 8 drives lower fixture 7 to move back and forth, and soft cover 5 also changes shape and internal capacity thereupon.The shape of soft cover 5 in elevating table device running is as shown in Fig. 7,8 and 9.Fig. 7 is elevating table device 8 when upwards moving to top, the shape of soft cover 5.Fig. 8 is elevating table device 8 when being in center nature, the shape of soft cover 5; Fig. 9 is elevating table device 8 when moving to lowermost end downwards, the shape of soft cover 5.
The heater switch of the cylinder controller of elevating table device 8 and limit switch, counter, electric heater 10 etc. are unified to be arranged in control cabinet 9, to concentrate manipulation.
Further, controlled flexible space high/low temperature environmental simulation system of the present invention also comprises temperature sensor 13, micro-pressure sensor 14, data collecting instrument 16 and computer 17.
Temperature sensor 13 is arranged in the warm field interior volume of soft cover 5, for measuring the warm field space temperature of soft cover 5.Further, temperature sensor 13 is connected to data collecting instrument 16 after being drawn from the top of upper plenum chamber 3 by aviation connector 15.In a preferred embodiment of the present invention, temperature sensor 13 adopt 9 precision be ± 0.1 miniature platinum resistance thermometer, the concrete measurement point position of the interior volume that these thermometers are formed at soft cover 5 as shown in Figure 10, lays respectively at the upper, middle and lower portion of the soft inner left side of cover 5, the right and space center.
Air is directly accessed in micro-pressure sensor 14 one end, and the other end is connected from soft cover 5 inner space stainless steel tubule with drawing by flexible pipe and upper plenum chamber 3, to measure the inner pressure reduction with air of soft cover 5.The signal of micro-pressure sensor 14 introduces data collecting instrument 16 by holding wire, is read the data of micro-pressure sensor 14 by data collecting instrument 16.Wherein holding wire is in Fig. 1 shown in dotted line.
Controlled flexible space high/low temperature environmental simulation system of the present invention operationally, must advanced line replacement operating mode.When replacing operating mode, close the first liquid nitrogen control valve 21, open all the other all valves, soft cover 5 is entered through the admission line 31 of admission line 19 and upper plenum chamber 3 respectively by vaporizer 2 drying nitrogen out, with this, air in soft cover 5 space, each pipeline and each equipment is squeezed away from upper air bleeding valve 25 and lower air bleeding valve 26, complete gas displacement process.No matter be worst hot case or worst cold case, all first must carry out displacement operating mode, to ensure gas purity in working chamber, not water content and oxygen etc.
When worst cold case, employing is sent mode next time, as shown in Fig. 1 black arrows direction.Close intake valve 23 and return-air valve 24, do not open blower fan 11 and electric heater 10.Direct dependence is driving from the pressure of supercharging liquid nitrogen storage tank 1, opens liquid valve 20, first liquid nitrogen control valve 21 and the second liquid nitrogen control valve 22; , the liquid nitrogen in supercharging liquid nitrogen storage tank 1 is vaporized into room temperature under nitrogen through empty bath vaporizer 2; Liquid nitrogen and room temperature under nitrogen allocate its mixed proportion and flow by the first liquid nitrogen control valve 21 and the second liquid nitrogen control valve 22, obtain temperature required low-temperature circulating medium, low-temperature circulating medium enters upper plenum chamber by the air inlet pipe 31 of upper plenum chamber 3, and in upper plenum chamber 3 laminarization laggard enter soft cover 5, the inner gas at normal temperature of soft cover 5 is discharged by the discharge duct 62 of lower plenum chamber 6, forms open type cryogenic gas flow process.In whole process, data collecting instrument 16 is monitored after soft cover 5 inner space reaches design temperature, and manual adjustments exhaust valve 26 and liquid feed valve 21 input fixing cold and maintain environmental chamber and be stable at target temperature.
Controlled flexible space high/low temperature environmental simulation system of the present invention is when worst hot case, and the mode served back under employing, as shown in Fig. 1 hollow arrow direction.Close the first liquid nitrogen control valve 21, second liquid nitrogen control valve 22 and lower air bleeding valve 26, open return-air valve 24 and upper air bleeding valve 25, open blower fan 11 and electric heater 10.From vaporizer 2 export room temperature under nitrogen after electric heater 10 heat temperature raising, the air current flow of heating is driven by blower fan 11, to enter lower plenum chamber 6 by the admission line 61 of lower plenum chamber 6, then evenly flow into soft cover 5 by the top orifice plate of lower plenum chamber 6, the cryogenic gas after heat exchange passes back into gas reservoir 12 by the return-air duct 32 at upper plenum chamber 3 top.After soft cover 5 inner space is warming up to design temperature, reduce the power of electric heater 10, turn down air returning valve 24, make to form a closed high-temperature gas closed circuit by blower fan 11, electric heater 10, nitrogen storage tank 12, high temperature circulation pipeline, soft cover 5, keep being stable at target temperature in environmental chamber.Wherein, upper air bleeding valve 25 can intermittent be opened, for discharging because gas heating expands the pressure rising caused.
Environmental chamber, after namely soft cover 5 reaches the high/low temperature of setting, open the lifting platform switch on control cabinet 9, elevating table device 8 automatically completes Circularly liftable action under the help of counter.Elevating table device 8 connects lower fixture 7 and then connects soft cover 5, drives soft cover 5 bottom to pump, change shape and the internal capacity of soft cover 5 in displacement process, as shown in Fig. 7,8,9, forms the high and low temperature environment chamber of variable volume.And in running, by the change of data collecting instrument 16 and computer 17 monitoring of environmental chamber internal and external temperature and pressure.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that the ordinary skill of this area just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technical staff in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (7)
1. a controlled flexible cavity high/low temperature environmental simulation system, it is characterized in that, comprise low temperature cold source feedway (1), vaporizer (2), upper plenum chamber (3), upper fixing element (4), soft cover (5), lower plenum chamber (6), lower fixture (7), elevating table device (8), control cabinet (9), electric heater (10), blower fan (11), gas reservoir (12), temperature sensor (13), micro-pressure sensor (14), aviation connector (15), data collecting instrument (16) and computer (17), some valves and some pipelines, described low temperature cold source feedway (1) is for providing low temperature cold source, described vaporizer (2) is for being warming up to room temperature by described low temperature cold source, the top of described upper plenum chamber (3) is provided with admission line (31), return-air duct (32) and discharge duct (33), the bottom of described lower plenum chamber (6) is provided with admission line (61) and discharge duct (62),
Described low temperature cold source feedway (1), described vaporizer (2), described upper plenum chamber (3), described lower plenum chamber (6), described electric heater (10), to be connected by pipeline between described blower fan (11) and described gas reservoir (12);
Described low temperature cold source feedway (1) adopts with pressure from supercharging liquid nitrogen storage tank, and described low temperature cold source is liquid nitrogen; The output of described low temperature cold source feedway (1) is divided into two-way, and described valve (20) of leading up to is connected with the input port of described valve (21) with described vaporizer (2); Leading up to described valve (20) and described valve (21) is linked into the admission line (31) of described upper plenum chamber (3); Described vaporizer is empty bath vaporizer, and the liquid nitrogen stream of low temperature, through described vaporizer, is heated up by fin and surrounding air heat exchange, is the nitrogen of room temperature by liquid nitrogen vaporization; The output of described vaporizer (2) is divided into two-way: described valve (23) of leading up to introduces the admission line (61) of described lower plenum chamber (6) through described blower fan (11) and described electric heater (10); One tunnel is linked into described upper plenum chamber (3); The return-air duct (32) of described upper plenum chamber (3) is linked into the admission line (61) of described lower plenum chamber (6) through described gas reservoir (12), described blower fan (11) and described electric heater (10) by described valve (24);
The top of described soft cover (5) is tightly connected by fixed (4) and described upper plenum chamber (3); The bottom of described soft cover (5) is tightly connected by described lower fixture (7) and described lower plenum chamber (6);
Wherein, described upper plenum chamber (3) and described lower plenum chamber (6) are made up of corrosion resistant plate; And the bottom of described upper plenum chamber (3) and the top of described lower plenum chamber (6) are orifice plates;
The low temperature nitrogen being entered described upper plenum chamber (3) by admission line (31) after plenum chamber (3) buffering, enters in described soft cover (5) by the orifice plate uniform divided flows of described upper plenum chamber (3) bottom on described; What entered by admission line (61) enters described soft cover (5) in by the orifice plate uniform divided flows at described lower plenum chamber (6) top by the high temperature air inlet after described electric heater (10) heats after described lower plenum chamber (6) is cushioned;
Described elevating table device (8) and described lower fixture (7) are fixed together; Described elevating table device (8) drives described soft cover (5) to move up and down;
Described temperature sensor (13) is arranged in the warm field interior volume of described soft cover (5), and is connected to data collecting instrument (16) from the top of described upper plenum chamber (3) by aviation connector (15) extraction;
Described data collecting instrument (16) is for gathering the signal of described temperature sensor (13) and being converted to data and sending computer (17) to.
2. the high/low temperature environmental simulation system of a kind of controlled flexible cavity as claimed in claim 1, wherein, the percent opening of the orifice plate of described upper plenum chamber (3) and described lower plenum chamber (6) is 30%.
3. the high/low temperature environmental simulation system of a kind of controlled flexible cavity as claimed in claim 1; wherein; described soft cover (5) is composited by multilayer metallized film reflecting layer and fibrous paper interval, and the surfaces externally and internally of described soft cover (5) is coated with sealant and waterproofing protection fabric.
4. the high/low temperature environmental simulation system of a kind of controlled flexible cavity as claimed in claim 1, wherein, fixed (4) and lower fixture (7) are made up of cork or glass-reinforced plastic material.
5. the high/low temperature environmental simulation system of a kind of controlled flexible cavity as claimed in claim 1, wherein, one end of described micro-pressure sensor (14) is connected with the stainless steel tubule drawn from described soft cover (5) inner space by flexible pipe, the other end is communicated with air, for measuring the pressure reduction of described soft cover (5) and air.
6. the high/low temperature environmental simulation system of a kind of controlled flexible cavity as claimed in claim 1, wherein, described elevating table device (8) comprises cylinder, controller, counter, limit switch and mechanical guide.
7. the high/low temperature environmental simulation system of a kind of controlled flexible cavity as claimed in claim 1, wherein, described control cabinet (9) for controlling described simulation system, described control cabinet (9) the encapsulation and integration switch of the controller of described cylinder, counter, limit switch and described electric heater (10).
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| CN105675243B (en) * | 2016-01-25 | 2019-02-05 | 中国飞机强度研究所 | A kind of environment temperature simulation device for landing gear drop test |
| CN106571081A (en) * | 2016-11-03 | 2017-04-19 | 六禾(厦门)智能科技有限公司 | Six-dimensional motion spatial simulation thermal field system teaching test platform |
| CN106644466B (en) * | 2016-12-12 | 2019-02-01 | 西北工业大学 | A kind of simulating test device for aircraft rudder transmission mechanism |
| CN106679969B (en) * | 2016-12-12 | 2019-03-26 | 西北工业大学 | A kind of simulated testing system and test method for aircraft rudder transmission mechanism |
| CN107389622A (en) * | 2017-06-28 | 2017-11-24 | 广东省特种设备检测研究院茂名检测院 | A kind of optics cavity for being used to measure natural gas transmitted spectrum |
| CN108479865A (en) * | 2018-02-13 | 2018-09-04 | 中国科学院西安光学精密机械研究所 | It is a kind of can simulated high altitude climatic environment experimental rig |
| CN110108532B (en) * | 2019-05-17 | 2024-04-19 | 中国科学院理化技术研究所 | High-low temperature treatment equipment |
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| JPH06182235A (en) * | 1992-12-24 | 1994-07-05 | Hitachi Ltd | Thermal environment testing equipment |
| JP2999710B2 (en) * | 1996-03-21 | 2000-01-17 | タバイエスペック株式会社 | Wide-range environmental test equipment |
| CN201633073U (en) * | 2009-11-04 | 2010-11-17 | 戴觉全 | Microprocessor control stationery notebook label index cutting punching machine |
| CN102091663B (en) * | 2009-12-15 | 2015-05-27 | 上海宇航系统工程研究所 | Soft volume variable high and low temperature test box |
| CN102886284B (en) * | 2012-10-30 | 2015-01-14 | 上海交通大学 | High-low-temperature normal-pressure heat cycle test device |
| CN103341375B (en) * | 2013-06-18 | 2014-12-17 | 上海宇航系统工程研究所 | High and low temperature environment simulation experiment system |
| CN103318427B (en) * | 2013-06-25 | 2016-03-30 | 上海宇航系统工程研究所 | A kind of space environment simulation test system |
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