CN105867464A

CN105867464A - Thermal loading device and method for variable-accelerated-speed environment test

Info

Publication number: CN105867464A
Application number: CN201610377338.8A
Authority: CN
Inventors: 鲁亮; 胜来; 欧峰
Original assignee: General Engineering Research Institute China Academy of Engineering Physics
Current assignee: General Engineering Research Institute China Academy of Engineering Physics
Priority date: 2016-05-30
Filing date: 2016-05-30
Publication date: 2016-08-17
Anticipated expiration: 2036-05-30
Also published as: CN105867464B

Abstract

The invention discloses a thermal loading device for a variable-accelerated-speed environment test. A heating tube is arranged in a thermal loading box, the induction end of a temperature sensor is arranged in the thermal loading box, the signal output end of the temperature sensor and the input end of the heating tube are correspondingly connected with a temperature control box, the heating tube is filled with magnesium oxide, the two ends of the heating tube are sealed with ceramics, the heating tube is mounted to the inner wall of the thermal loading box through multiple thermal-insulation clamps, multiple cooling fins are mounted on the heating tube, and tumbler connecting and supporting plates are mounted on a box opening of the thermal loading box and used for being connected with a tumbler of a centrifugal machine in a seamless mode. The invention further discloses a thermal loading method adopted by the thermal loading device for the variable-accelerated-speed environment test, and a double-temperature-zone thermal loading method or a response temperature method is adopted. According to the thermal loading device and method for the variable-accelerated-speed environment test, the heating tube is filled with magnesium oxide, and the cooling fins are mounted, so that the device has better heat dissipation performance; through the temperature control box, the temperature sensor and the heating tube, precision control over the temperature inside the thermal loading box is achieved.

Description

A kind of fluctuating acceleration environmental test hot charger and hot loading method

Technical field

The present invention relates to a kind of fluctuating acceleration environmental test device, particularly relate to a kind of fluctuating acceleration environment examination Test with hot charger and hot loading method.

Background technology

Aircraft, in flight course, need to be accelerated, slow down and the action such as maneuvering flight.Will be by from respectively Individual direction, different size of fluctuating acceleration effect；Meanwhile, the temperature experienced in fluctuating acceleration flight course Load also has large change, such as the variations in temperature brought through different atmosphere environment, constitutes aircraft Fluctuating acceleration-temperature the combinational environment of required experience in flight course.When vehicle flight speeds meets or exceeds (such as hypersonic aircraft) during 5 times of sound row, the fluctuating acceleration that aircraft maneuver produces becomes apparent from, Meanwhile, the aerodynamic energy of rapid flight is converted into heat energy, and aircraft surface response temperature heats up rapidly, works as temperature Degree reaches aircraft interior, is likely to result in the consequences such as aircraft interior electronics device operational failure.Therefore, It is necessary that in the ground development stage, Related product being carried out strict fluctuating acceleration-temperature combined environment testing examines Core.

Being different from single environment test, composite testing can expose single environment and test the problem that cannot expose, In addition, relative to stable state acceleration environment, fluctuating acceleration is to product component stress, internal temperature conduction Etc. aspect examination harsher.Therefore, the temperature hot load test technology under research fluctuating acceleration environmental condition, Exploitation related compound environmental test equipment is particularly significant.

According to GJB150A standard, China carries out the test examination of single temperature environment, typically uses temperature more Degree case is carried out, but, sweat box volume, weight are relatively big, and required electric power supply during its work, for from Scheming collecting ring etc. is all bigger burden, is therefore difficult to be placed on centrifuge and carries out.

China carries out temperature-acceleration combined environment testing technical research and is still in the starting stage.Use Test method remains " centrifuge+temperature load test equipment " this form.A section such as Zhejiang University Grind team, it is established that one sleeving temperature-Circumstances of Centrifuging pilot system, set at centrifuge end heater strip Meter temperature loads hermetic container, but its shaft length is less than 2m, max line acceleration 10g, small volume, Only can complete the exploration work of some test principles, it is impossible to undertake the temperature-centrifugal compound ring of specific product Border test mission.

Overall institute's environment center, China Physics Institute domestic and international temperature of long-term follow-acceleration combined environment testing technology is entered Exhibition, utilizes politef to heat thin film, designs cartridge heater, under not changes persuing acceleration and temperature match curing conditions, Below acceleration 50g, the temperature-acceleration environmental simulation of temperature 60 degrees Celsius can be realized.This device Can complete the examination of stable state acceleration-temperature combined environment testing, but from temperature temperature elevating range, temperature and add The aspect requirement such as percentage speed variation, safety, is not particularly suited for the temperature-acceleration environment of fluctuating acceleration environment Test, such as, politef heating film heatproof is less than 100 degree, therefore, in maximum temperature, temperature Rise speed to be necessarily restricted；Use high-temp glue that heating film is fitted in container inner wall, if this mounting means Want heating film is replaced, the most difficult；Politef is a kind of plastics, at fluctuating acceleration, height Be susceptible to deformation by mechanical force, thermal stress, even melt under temperature environment, heating film internal it is also possible to Because high temperature, cause degumming, the heater strip short circuit comprised inside initiation, there is security incident.It addition, mould The abrasion resistance of material, durable applicable performance, antioxygenic property is the most poor, easily causes potential safety hazard.

Summary of the invention

The purpose of the present invention is that provide one to meet the product changes such as aircraft adds to solve the problems referred to above Temperature index under velocity conditions requires and can improve the fluctuating acceleration environment of security of system and practicality simultaneously Test with hot charger and hot loading method.

The present invention is achieved through the following technical solutions above-mentioned purpose:

A kind of hot charger of fluctuating acceleration environmental test, including temperature-controlled cabinet, temperature sensor, warm Load case, add heat pipe, pivoted arm connects gripper shoe, heat insulation clip and fin, described in add heat pipe and be placed in described Heat loads in case, and the induction end of described temperature sensor is placed in described heat and loads in case, described temperature sensor Signal output part and the described input adding heat pipe is corresponding with described temperature-controlled cabinet respectively connects, described in add The inside of heat pipe is filled with and magnesium oxide two ends ceramic seal, described in add heat pipe by multiple described heat insulation cards Hoop be installed on described heat load case inwall on, multiple described fin be installed on described in add on heat pipe, described Pivoted arm connects gripper shoe and is installed on the case mouth of described heat loading case and for being connected with centrifuge pivoted arm.

As preferably, described fin is petal fin, has more preferable radiating effect, described heat insulation Clip is corundum clip, has good heat resistance, insulating properties and rigidity；The described heat pipe that adds is respective Independent two sections, add heat pipe and are horizontally installed in described heat loading case described in every section, two sections of inputs adding heat pipe End is corresponding with described temperature-controlled cabinet respectively to be connected, and so can realize subregion and independently control, improve control Accuracy.

In order to improve mounting stability further, described pivoted arm connects the inner of gripper shoe and is placed in described heat loading In the case mouth of case, it is provided with between the inner and the case mouth inwall of described heat loading case of described pivoted arm connection gripper shoe Support connecting plate.

As preferably, the tank wall that described heat loads case is interlayer corrosion resistant plate, the folder of described interlayer corrosion resistant plate Being filled with heat insulation foam in Ceng, this structure makes heat load case and has good rigidity and heat-proof quality concurrently.

The hot loading method that a kind of fluctuating acceleration environmental test uses with hot charger, uses dual temperature district heat to add Support method: two sections are added heat pipe and carries out temperature control respectively, the part that temperature is high, reduce and add heat pipe output, The part that temperature is low, adds heat pipe output；Or, use response temperature methods: by a temperature Sensor is placed on testpieces, directly obtains testpieces response temperature, and an other temperature sensor is placed Load inside case in heat, obtain test ambient temperature, make test by controlling two sections of outputs adding heat pipe Ambient temperature is consistent with testpieces response temperature.

The beneficial effects of the present invention is:

The present invention is by adding inside heat pipe filling magnesium oxide so that it is has more preferable heat dispersion, installs and dissipate Backing further increases heat dispersion, and the two ends adding heat pipe use ceramic seal so that it is sealing property obtains Ensure；Temperature-controlled cabinet detects heat in real time by temperature sensor and loads case internal temperature, and is added by control The output of heat pipe, it is achieved heat loads the precision temperature control in case；Connect gripper shoe by rotating shaft to install Heat loads case so that it is install more reliable and more stable；Use heat insulation clip to fix to add the mode of heat pipe and heat, Add the replacing of heat pipe, use convenient, and there is good insulating, high temperature resistant, good rigidly, safety High feature；Using the hot designing load in dual temperature district, heating-up temperature can reach 400 degree, adds heating index higher, It is more preferable that temperature controls uniformity, and powerful.

Accompanying drawing explanation

Fig. 1 is after fluctuating acceleration environmental test of the present invention is installed on centrifuge rotating shaft with hot charger Structural representation；

Fig. 2 is the fluctuating acceleration environmental test structural representation of hot charger of the present invention, shows in figure Go out internal structure.

Detailed description of the invention

The invention will be further described below in conjunction with the accompanying drawings:

As in figure 2 it is shown, fluctuating acceleration environmental test of the present invention includes temperature-controlled cabinet with hot charger (not shown), temperature sensor 7, heat load case 84, add heat pipe 86, pivoted arm connect gripper shoe 81, The heat insulation clip of corundum 87 and petal fin 88, it is interlayer corrosion resistant plate that heat loads the tank wall of case 84, institute Being filled with heat insulation foam 85 in stating the interlayer of interlayer corrosion resistant plate, adding heat pipe 86 is the most independent two section, every section Adding heat pipe 86 to be horizontally installed in heat loading case 84, the induction end of temperature sensor 7 is placed in heat and loads case 84 In, the signal output part of temperature sensor 7 and two sections of inputs adding heat pipe 86 control with described temperature respectively Case correspondence connects, and the inside adding heat pipe 86 is filled with and magnesium oxide two ends ceramic seal, adds heat pipe 86 and leads to Crossing the heat insulation clip of multiple corundum 87 to be installed on the inwall of heat loading case 84, multiple petal fin 88 are pacified Being loaded on and add on heat pipe 86, pivoted arm connects gripper shoe 81 and is installed on heat loading case 84 by connecting bolt 82 Case mouth is also used for being connected with centrifuge pivoted arm (the centrifuge pivoted arm 2 see in Fig. 1), and pivoted arm connects support The inner of plate 81 is placed in the case mouth that heat loads case 84, and pivoted arm connects the inner of gripper shoe 81 and loads case with heat Support connecting plate 83 it is provided with between the case mouth inwall of 84.Being connected here refers to the case mouth that heat loads case 84 And seamless link between centrifuge pivoted arm.

During as it is shown in figure 1, use, this hot charger 8 is arranged on centrifuge pivoted arm 2, in Fig. 1 Also show centrifuge balancing weight 1, instrument room 3, centrifuge rotating shaft 4, power/hoop 5, bearing 6 and Temperature sensor 7, said temperature control chamber is placed in instrument room 3, the signal output part of temperature sensor 7 and Two sections of inputs adding heat pipe 86 are connected with temperature-controlled cabinet conversion by power/hoop 5.

In conjunction with Fig. 1 and Fig. 2, the heat loading that fluctuating acceleration environmental test of the present invention uses with hot charger Method, uses dual temperature district hot loading method: adds heat pipe 86 to two sections and carries out temperature control respectively, the part that temperature is high, Reduce the output adding heat pipe 86, the part that temperature is low, add the output of heat pipe 86；Or, Use response temperature methods: a temperature sensor be placed on testpieces, directly obtain testpieces response Temperature, an other temperature sensor (i.e. temperature sensor 7 in figure) is placed on heat and loads the interior of case 84 Portion, obtains test ambient temperature, by control two sections of outputs adding heat pipe 86 make test ambient temperature with Testpieces response temperature is consistent.

Above-described embodiment is presently preferred embodiments of the present invention, is not the restriction to technical solution of the present invention, As long as the technical scheme that can realize on the basis of above-described embodiment without creative work, all should regard In the range of falling into the rights protection of patent of the present invention.

Claims

1. the hot charger of fluctuating acceleration environmental test, it is characterised in that: include temperature-controlled cabinet, Temperature sensor, heat load case, add heat pipe, pivoted arm connection gripper shoe, heat insulation clip and fin, described Adding heat pipe to be placed in described heat loading case, the induction end of described temperature sensor is placed in described heat and loads in case, The signal output part of described temperature sensor and the described input adding heat pipe respectively with described temperature-controlled cabinet pair Should connect, described in add the inside of heat pipe and be filled with and magnesium oxide two ends ceramic seal, described in add heat pipe and pass through Multiple described heat insulation clips are installed on described heat and load on the inwall of case, and multiple described fin are installed on described Add on heat pipe, described pivoted arm connect gripper shoe be installed on described heat load case case mouth and for centrifugal basket Arm is connected.

The hot charger of fluctuating acceleration environmental test the most according to claim 1, it is characterised in that: Described fin is petal fin, and described heat insulation clip is corundum clip；The described heat pipe that adds is for the most solely Vertical two sections, add heat pipe and are horizontally installed in described heat loading case described in every section, two sections of inputs adding heat pipe Connection corresponding with described temperature-controlled cabinet respectively.

The hot charger of fluctuating acceleration environmental test the most according to claim 1 and 2, its feature exists In: described pivoted arm connects the inner of gripper shoe and is placed in the case mouth that described heat loads case, the connection of described pivoted arm It is provided with support connecting plate between the inner and the case mouth inwall of described heat loading case of fagging.

The hot charger of fluctuating acceleration environmental test the most according to claim 1 and 2, its feature exists In: the tank wall that described heat loads case is interlayer corrosion resistant plate, is filled with in the interlayer of described interlayer corrosion resistant plate Heat insulation foam.

5. one kind such as fluctuating acceleration environmental test according to claim 2 uses with hot charger Hot loading method, it is characterised in that: use the hot loading method in dual temperature district: add heat pipe to two sections and control respectively Temperature, the part that temperature is high, reduce and add heat pipe output, the part that temperature is low, add heat pipe output work Rate；Or, use response temperature methods: a temperature sensor be placed on testpieces, directly obtain Testpieces response temperature, an other temperature sensor is placed on heat and loads inside case, obtains experimental enviroment temperature Degree, makes test ambient temperature consistent with testpieces response temperature by controlling two sections of outputs adding heat pipe.