CN105867464B - A kind of fluctuating acceleration environmental test hot loading device and hot loading method - Google Patents
A kind of fluctuating acceleration environmental test hot loading device and hot loading method Download PDFInfo
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- CN105867464B CN105867464B CN201610377338.8A CN201610377338A CN105867464B CN 105867464 B CN105867464 B CN 105867464B CN 201610377338 A CN201610377338 A CN 201610377338A CN 105867464 B CN105867464 B CN 105867464B
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- temperature
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- heating tube
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Abstract
The invention discloses a kind of hot loading device of fluctuating acceleration environmental test, wherein, heating tube is placed in heat loading case, the induction end of temperature sensor is placed in heat loading case, the connection corresponding with temperature-controlled cabinet respectively of the signal output part of temperature sensor and the input of heating tube, the inside of heating tube is filled with magnesia and magnesia two ends ceramic seal, heating tube is installed on by multiple heat-insulated clips on the inwall of heat loading case, multiple fin are installed in heating tube, pivoted arm connection supporting plate is installed on the case mouthful of heat loading case and for being connected with centrifuge pivoted arm.The invention also discloses the hot loading method that a kind of fluctuating acceleration environmental test is used with hot loading device, using the hot loading method in dual temperature area or using response temperature methods.The present invention makes it have more preferable heat dispersion by filling magnesia inside heating tube and installing fin；Precision temperature control in heat loading case is realized by temperature-controlled cabinet, temperature sensor and heating tube.
Description
Technical field
The present invention relates to a kind of fluctuating acceleration environmental test device, more particularly to a kind of fluctuating acceleration environmental test heat
Loading device and hot loading method.
Background technology
Aircraft need to be accelerated, be slowed down and the action such as maneuvering flight in flight course.Will by from all directions,
Different size of fluctuating acceleration effect；Meanwhile, the temperature loading undergone in fluctuating acceleration flight course also has large change, such as
The temperature change brought by different atmosphere environment, the fluctuating acceleration of experience needed for constituting during aircraft flight-
Temperature combinational environment.When vehicle flight speeds meet or exceed 5 times of sound rows (such as hypersonic aircraft), aircraft is motor-driven
Act the fluctuating acceleration produced more obvious, meanwhile, the aerodynamic energy of rapid flight is converted into heat energy, aircraft surface response temperature
Degree rapidly heats up, and when temperature reaches aircraft interior, is likely to result in the consequences such as aircraft interior electronics device operational failure.
Examined therefore, it is necessary to carry out strict fluctuating acceleration-temperature combined environment testing to Related product in the ground development stage.
Different from single environment experiment, composite testing can expose single environment experiment the problem of can not expose, except this it
Outside, relative to stable state acceleration environment, fluctuating acceleration in terms of product component stress, internal temperature conduction to examining tighter
Extremely.Therefore, the hot load test technology of temperature under research fluctuating acceleration environmental condition, exploitation related compound environmental test equipment ten
Divide important.
According to GJB150A standards, China carries out single temperature environment experiment examination, general to be entered more using sweat box
OK, however, sweat box volume, weight are larger, and required supply of electric power during its work, it is larger for centrifuge collecting ring etc.
Burden, therefore it is difficult to be placed on progress on centrifuge.
China enters trip temperature-acceleration combined environment testing technical research and is still in the starting stage.The experiment of use
Method remains " centrifuge+temperature load test equipment " this form.Such as a Research Team of Zhejiang University, it is established that
One sleeving temperature-Circumstances of Centrifuging pilot system, in centrifuge end heater strip design temperature loading closed container, but its
Shaft length is less than 2m, and maximum linear acceleration 10g, small volume can only complete the exploration work of some test principles, nothing
Method undertakes temperature-Circumstances of Centrifuging test mission of specific product.
The domestic and international temperature of China Physics Institute's totality institute's environment center long-term follow-acceleration combined environment testing technical progress, profit
Film is heated with polytetrafluoroethylene (PTFE), cartridge heater is designed, in the case where not requiring fluctuating acceleration and temperature match curing conditions, it is possible to achieve acceleration
Below 50g, 60 degrees Celsius of temperature temperature-acceleration environmental simulation.This device can complete stable state acceleration-temperature and be combined
Environmental test is examined, but is required in terms of temperature temperature elevating range, temperature and rate of acceleration change, security, and is not applied to
In temperature-acceleration environment experiment of fluctuating acceleration environment, such as, polytetrafluoroethylene (PTFE) heating film heatproof is no more than 100 degree, because
This, maximum temperature, temperature rate-of-rise are necessarily restricted；Heating film is fitted in by container inner wall, this peace using high-temp glue
If dress mode is want to change heating film, very difficult；Polytetrafluoroethylene (PTFE) is a kind of plastics, in fluctuating acceleration, high temperature ring
Easily deformed, even melt by mechanical force, thermal stress under border, it is also possible to because high temperature, causing to take off inside heating film
Glue, the heater strip short circuit for triggering the inside to include, occurs security incident.In addition, the abrasion resistance of plastics, durable applicable performance, resist
Oxidation susceptibility is poor, easily triggers potential safety hazard.
The content of the invention
The purpose of the present invention is that and provides one kind in order to solve the above problems and meet the product fluctuating acceleration such as aircraft
Under the conditions of temperature index requirement and the fluctuating acceleration environmental test heat loading of security of system and practicality can be improved simultaneously
Device and hot loading method.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of hot loading device of fluctuating acceleration environmental test, including temperature-controlled cabinet, temperature sensor, heat loading case,
Heating tube, pivoted arm connection supporting plate, heat-insulated clip and fin, the heating tube are placed in the heat loading case, the temperature
The induction end of sensor is placed in the heat loading case, the input of the signal output part of the temperature sensor and the heating tube
End connection corresponding with the temperature-controlled cabinet respectively, the inside of the heating tube is filled with magnesia and magnesia two ends ceramics
Sealing, the heating tube is installed on the heat by multiple heat-insulated clips and loaded on the inwall of case, multiple fin
It is installed in the heating tube, the pivoted arm connection supporting plate is installed on the case mouthful of the heat loading case and is used for and centrifugal basket
Arm is connected.
Preferably, the fin is petal fin, with more preferable radiating effect, the heat-insulated clip is firm
Beautiful clip, with good heat resistance, insulating properties and rigidity；The heating tube is each independent two sections, described in every section
Heating tube is horizontally installed in the heat loading case, and the input of two sections of heating tubes is corresponding with the temperature-controlled cabinet respectively to be connected
Connect, can so realize subregion independent control, improve control accuracy.
In order to further improve mounting stability, the inner of the pivoted arm connection supporting plate is placed in the case of the heat loading case
Intraoral, the inner of the pivoted arm connection supporting plate is provided with support connecting plate between the intraoral wall of case of the heat loading case.
Preferably, the tank wall of the heat loading case is to be filled out in interlayer stainless steel plate, the interlayer of the interlayer stainless steel plate
Filled with heat insulation foam, this structure makes heat loading case have good rigidity and heat-proof quality concurrently.
The hot loading method that a kind of fluctuating acceleration environmental test is used with hot loading device, using hot loading side of dual temperature area
Method：Two sections of heating tubes are carried out with temperature control respectively, the high part of temperature reduces heating tube power output, the low part of temperature, increase
Heating tube power output；Or, using response temperature methods：One temperature sensor is placed on testpieces, directly obtained
Testpieces responds temperature, and a temperature sensor is placed on inside heat loading case in addition, is obtained test ambient temperature, is passed through control
It is consistent that the power output of two sections of heating tubes makes test ambient temperature respond temperature with testpieces.
The beneficial effects of the present invention are：
The present invention makes it have more preferable heat dispersion by filling magnesia inside heating tube, installs fin and enters
One step improves heat dispersion, and the two ends of heating tube use ceramic seal, its sealing property is protected；Temperature-controlled cabinet leads to
Excess temperature sensor detects heat loading case internal temperature in real time, and by controlling the power output of heating tube, realizes heat loading case
Interior precision temperature control；Supporting plate is connected by rotating shaft heat loading case is installed, make its installation more reliable and more stable；Using heat-insulated
The mode that clip fixes heating tube is heated, the replacing of heating tube, using more facilitating, and with good insulating, resistance to height
Warm, rigid good, safe the characteristics of；Using the hot designing load in dual temperature area, heating-up temperature can reach 400 degree, heat index
Higher, temperature control uniformity is more preferable, and powerful.
Brief description of the drawings
Fig. 1 is that the structure that fluctuating acceleration environmental test of the present invention is installed on after centrifuge rotating shaft with hot loading device is shown
It is intended to；
Fig. 2 is in showing in the structural representation of the hot loading device of fluctuating acceleration environmental test of the present invention, figure
Portion's structure.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Fig. 2 fluctuating acceleration environmental test of the present invention includes temperature-controlled cabinet (in figure not with hot loading device
Show), temperature sensor 7, heat loading case 84, heating tube 86, pivoted arm connection supporting plate 81, the heat-insulated clip 87 of corundum and it is petal dissipate
Backing 88, the tank wall of heat loading case 84 is to be filled with heat insulation foam 85 in interlayer stainless steel plate, the interlayer of the interlayer stainless steel plate,
Heating tube 86 is each independent two sections, and every section of heating tube 86 is horizontally installed in heat loading case 84, the sensing of temperature sensor 7
End is placed in heat loading case 84, the input of the signal output part of temperature sensor 7 and two sections of heating tubes 86 respectively with the temperature
Spend control cabinet correspondence to connect, the inside of heating tube 86 is filled with magnesia and magnesia two ends ceramic seal, and heating tube 86 is led to
Cross the heat-insulated clip 87 of multiple corundum to be installed on the inwall of heat loading case 84, multiple petal fin 88 are installed on heating tube 86
On, pivoted arm connect supporting plate 81 by connecting bolt 82 be installed on heat loading case 84 case mouthful and for centrifuge pivoted arm (see
Centrifuge pivoted arm 2 in Fig. 1) be connected, pivoted arm connection supporting plate 81 the inner be placed in heat loading case 84 case it is intraoral, pivoted arm
Connect the inner of supporting plate 81 and be provided with support connecting plate 83 between the intraoral wall of case of hot loading case 84.Here the finger that is connected
It is seamlessly connected between the case mouthful and centrifuge pivoted arm of heat loading case 84.
As shown in figure 1, in use, this hot loading device 8 also show into centrifugation on centrifuge pivoted arm 2 in Fig. 1
Machine balancing weight 1, instrument room 3, centrifuge rotating shaft 4, power/hoop 5, bearing 6 and temperature sensor 7, said temperature control cabinet
Be placed in instrument room 3, the input of the signal output part of temperature sensor 7 and two sections of heating tubes 86 by power/hoop 5 with
Temperature-controlled cabinet conversion connection.
With reference to Fig. 1 and Fig. 2, the hot loading method that fluctuating acceleration environmental test of the present invention is used with hot loading device,
Using the hot loading method in dual temperature area：Two sections of heating tubes 86 are carried out with temperature control respectively, the high part of temperature reduces the defeated of heating tube 86
Go out power, the low part of temperature increases the power output of heating tube 86；Or, using response temperature methods：One temperature is passed
Sensor is placed on testpieces, directly obtains testpieces response temperature, in addition a temperature sensor (TEMP i.e. in figure
Device 7) inside of heat loading case 84 is placed on, test ambient temperature is obtained, by controlling the power output of two sections of heating tubes 86 to make
Test ambient temperature is consistent with testpieces response temperature.
Above-described embodiment is presently preferred embodiments of the present invention, is not the limitation to technical solution of the present invention, as long as
The technical scheme that can be realized without creative work on the basis of above-described embodiment, is regarded as falling into patent of the present invention
Rights protection scope in.
Claims (5)
1. a kind of hot loading device of fluctuating acceleration environmental test, it is characterised in that：Including temperature-controlled cabinet, temperature sensor,
Heat loading case, heating tube, pivoted arm connection supporting plate, heat-insulated clip and fin, the heating tube are placed in the heat loading case,
The induction end of the temperature sensor is placed in the heat loading case, the signal output part of the temperature sensor and the heating
The connection corresponding with the temperature-controlled cabinet respectively of the input of pipe, the inside of the heating tube is filled with magnesia and magnesia two
End ceramic seal, the heating tube is installed on the heat by multiple heat-insulated clips and loaded on the inwall of case, Duo Gesuo
Fin is stated to be installed in the heating tube, pivoted arm connection supporting plate be installed on the case mouthful of the heat loading case and for
Centrifuge pivoted arm is connected.
2. the hot loading device of fluctuating acceleration environmental test according to claim 1, it is characterised in that：The fin is
Petal fin, the heat-insulated clip is corundum clip；The heating tube is each independent two sections, every section of heating tube
It is horizontally installed in the heat loading case, the input connection corresponding with the temperature-controlled cabinet respectively of two sections of heating tubes.
3. the hot loading device of fluctuating acceleration environmental test according to claim 1 or 2, it is characterised in that：The pivoted arm
The case that the inner of connection supporting plate is placed in the heat loading case is intraoral, and the inner and heat of the pivoted arm connection supporting plate is loaded
Provided with support connecting plate between the intraoral wall of case of case.
4. the hot loading device of fluctuating acceleration environmental test according to claim 1 or 2, it is characterised in that：The heat adds
The tank wall for carrying case is to be filled with heat insulation foam in interlayer stainless steel plate, the interlayer of the interlayer stainless steel plate.
5. the hot loading method that a kind of fluctuating acceleration environmental test according to claim 2 is used with hot loading device, its
It is characterised by：Using the hot loading method in dual temperature area：Two sections of heating tubes are carried out with temperature control respectively, the high part of temperature reduces heating
Pipe power output, the low part of temperature increases heating tube power output；Or, using response temperature methods：One temperature is passed
Sensor is placed on testpieces, directly obtains testpieces response temperature, and a temperature sensor is placed in heat loading case in addition
Portion, obtains test ambient temperature, by controlling the power output of two sections of heating tubes test ambient temperature is responded temperature with testpieces
Degree is consistent.
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| CN201610377338.8A CN105867464B (en) | 2016-05-30 | 2016-05-30 | A kind of fluctuating acceleration environmental test hot loading device and hot loading method |
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| CN107678459A (en) * | 2017-11-17 | 2018-02-09 | 北京强度环境研究所 | A kind of control system for Centrifugal Environment heat run |
| CN108414731A (en) * | 2018-05-08 | 2018-08-17 | 中国工程物理研究院总体工程研究所 | The geotechnical centrifuge structure of single-layer layout |
| CN109540692B (en) * | 2019-01-04 | 2023-09-19 | 中国工程物理研究院总体工程研究所 | Transient high-temperature large overload thermal composite test device |
| CN110739829B (en) * | 2019-11-18 | 2021-10-08 | 安睿智达(成都)科技有限公司 | Motor structure of integrated permanent magnet coupler |
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| US5610529A (en) * | 1995-04-28 | 1997-03-11 | Cascade Microtech, Inc. | Probe station having conductive coating added to thermal chuck insulator |
| CN105158006A (en) * | 2015-10-16 | 2015-12-16 | 中国工程物理研究院总体工程研究所 | Portable thermal loading device for temperature-acceleration composite environment test |
| CN105371882B (en) * | 2015-12-09 | 2017-10-17 | 中国工程物理研究院总体工程研究所 | A kind of high dynamic gondola |
| CN205670273U (en) * | 2016-05-30 | 2016-11-02 | 中国工程物理研究院总体工程研究所 | A kind of hot charger of fluctuating acceleration environmental test |
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