CN210154818U - Thermal vacuum test device with vacuum box arranged in constant temperature box - Google Patents
Thermal vacuum test device with vacuum box arranged in constant temperature box Download PDFInfo
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- CN210154818U CN210154818U CN201920733531.XU CN201920733531U CN210154818U CN 210154818 U CN210154818 U CN 210154818U CN 201920733531 U CN201920733531 U CN 201920733531U CN 210154818 U CN210154818 U CN 210154818U
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Abstract
The utility model discloses a thermal vacuum test device with a vacuum box arranged in the constant temperature box, which comprises a constant temperature box, a vacuum box, a stainless steel bottom plate with a trapezoid groove, a vacuum pumping system, a magnetic fluid sealing shaft, a driving loading device and a tested workpiece, wherein the vacuum box, the stainless steel bottom plate with the trapezoid groove, the magnetic fluid sealing shaft, the driving loading device and the tested workpiece are all arranged in the constant temperature box, the vacuum box, the driving loading device and the tested workpiece are arranged on the stainless steel bottom plate with the trapezoid groove, the driving loading device is arranged outside the vacuum box, the tested workpiece is arranged inside the vacuum box, the magnetic fluid sealing shaft is arranged between the vacuum box and the driving loading device, the utility model arranges the vacuum box, the driving loading device and the tested workpiece on the stainless steel bottom plate with the trapezoid groove, does not need the posture adjustment of each mounting platform, simplifies the adjusting mechanism and the adjusting process, the rigidity of the system is improved, and therefore the test precision is improved.
Description
Technical Field
The utility model relates to a spacecraft thermal vacuum test field, more specifically the saying so especially relates to a thermal vacuum test device in thermostated container is arranged in to vacuum chamber.
Background
During the development and service of the spacecraft, various types of space environment simulation tests must be carried out to fully expose potential defects of products and check the design and manufacturing quality of the spacecraft. The thermal vacuum test of the spacecraft mainly simulates a thermal environment and a vacuum environment. The existing thermal vacuum test mechanical system mainly comprises a vacuum tank, a heat sink system, a vacuum pumping system and a heating device, wherein the vacuum tank is used for providing a closed test space, the heat sink system is used for simulating a space cold and black environment, the vacuum pumping system is used for simulating a space vacuum environment, and the heating device is used for simulating a space thermal environment.
Aiming at the thermal vacuum long-life test of the spacecraft, a vacuum environment with relatively low temperature and stable temperature needs to be provided for a workpiece to be tested, and the driving loading device can normally work under the temperature. The existing method integrates a vacuum tank, a heat sink system, a heating device, a measured workpiece platform, a lifting mechanism and a heat insulation plate, and the method makes the structure of the vacuum tank complex and the maintenance difficult. Because the drive loading device can not normally work under the vacuum environment, so during the experiment, the drive loading device is arranged outside the vacuum tank, the workpiece to be tested is arranged inside the vacuum tank, the drive loading device and the workpiece to be tested are arranged on different platforms, the posture of each mounting platform needs to be adjusted to meet the requirement of the test coaxiality, and each mounting platform needs to be provided with 6 adjusting mechanisms with adjustable degrees of freedom. Before the test starts, 3 mounting platforms need to be adjusted to meet the specified coaxiality requirement due to the influences of temperature change, ground settlement and self stress change; in the process of testing, because the change of the temperature in the vacuum tank can cause the platform where the tested workpiece is located to deform, the flatness is changed, the coaxiality between the loading driving device and the tested workpiece is reduced, the postures of the mounting platforms are required to be frequently adjusted, the adjusting mechanisms and the adjusting process of the mounting platforms become complex, and meanwhile, the system rigidity of the thermal vacuum testing device can also be reduced. In the test process, the high-speed rotation of the drive loading device enables each mounting platform to easily generate vibration with different frequencies, so that the test result is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve and need adjust thereby making whole device and accommodation process become complicated in order to reach the regulation axiality among the current spacecraft heat vacuum long-life test, reduce the problem of overall system rigidity, provide a simple structure, the high vacuum chamber of system rigidity arranges the heat vacuum test device in the thermostated container in.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a thermal vacuum test device with a vacuum box arranged in a constant temperature box,
the device comprises a thermostat, a vacuum box, a stainless steel bottom plate with a trapezoidal groove, a vacuum air exhaust system, a magnetic fluid sealing shaft, a driving loading device and a workpiece to be detected, wherein the vacuum box, the stainless steel bottom plate with the trapezoidal groove, the magnetic fluid sealing shaft, the driving loading device and the workpiece to be detected are arranged in the thermostat, the vacuum box, the driving loading device and the workpiece to be detected are arranged on the stainless steel bottom plate with the trapezoidal groove, the driving loading device is arranged outside the vacuum box, the workpiece to be detected is arranged inside the vacuum box, the magnetic fluid sealing shaft is arranged between the vacuum box and the driving loading device and used for connecting the workpiece to be detected in the vacuum box and the driving loading device outside the vacuum box, the sealing performance of the vacuum box is ensured while motion is transmitted, the magnetic fluid sealing shaft and the vacuum box are connected through a flange plate, a sealing material and a heat insulating material are arranged at the connection part, an air exhaust hole is arranged at the stainless steel bottom plate with the trapezoidal groove for, and vacuumizing the vacuum box through a vacuum pumping system to simulate the vacuum environment of the thermal vacuum test.
Further, the incubator body is made of heat-insulating materials. Reduce thermal scattering and disappearing, there is temperature control system inside, can control the inside temperature of thermostated container, the change of the inside temperature of thermostated container can lead to the change of being surveyed the work piece temperature in the vacuum chamber, the heat that thermostated container temperature control system produced can transmit for being surveyed the work piece through heat-conduction and thermal radiation's mode, the temperature variation of being surveyed the work piece has certain hysteresis quality, when the thermostated container is during operation for a long time, can make the even target temperature that reaches of being surveyed the work piece, thereby the thermal environment among the simulation thermal vacuum test.
Furthermore, heating device is equipped with on the vacuum chamber wall, when the temperature of the work piece of being surveyed needs to be changed, heating device and thermostated container simultaneous working on the vacuum chamber wall, heating device heating temperature on the vacuum chamber wall is higher for the thermostated container to stop working before the work piece of being surveyed heats to the target temperature, the thermostated container continues work, thereby make the work piece of being surveyed reach the target temperature, heating device on the vacuum chamber wall can improve the temperature variation speed of the work piece of being surveyed, accelerate the change speed of the experimental thermal environment of hot vacuum.
Furthermore, the trapezoidal grooves on the stainless steel bottom plate with the trapezoidal grooves are not continuous, and the vacuum box, the driving loading device and the workpiece to be tested are arranged on the stainless steel bottom plate with the trapezoidal grooves through the trapezoidal grooves. The installation process is not required to adjust the postures of the installation platforms, the installation becomes simple due to the trapezoid grooves, the coaxiality requirement is easier to meet, meanwhile, the system rigidity can be improved, and therefore the test precision is improved.
Furthermore, the vacuum box is a cuboid and is made of a stainless steel plate and a sealing material which are connected through bolts. The vacuum box is fixed on a stainless steel bottom plate with a trapezoidal groove through bolts, sealing materials are arranged between the vacuum box and the stainless steel bottom plate with the trapezoidal groove, sealing of the vacuum box is achieved, the vacuum box is provided with an observation window which is right opposite to the observation window on the constant temperature box, and the motion state of a workpiece to be measured in the vacuum box can be observed in real time in the test process.
Furthermore, the vacuum pumping system is arranged outside the constant temperature box, is connected with the pumping hole of the stainless steel bottom plate with the trapezoid groove through the flange plate, and is responsible for pumping the vacuum degree in the vacuum box to be below the specified requirement and simulating the vacuum environment of the thermal vacuum test.
Furthermore, the constant temperature box is arranged on the stainless steel bottom plate with the trapezoidal groove, the installation of the thermal vacuum test device can be completed through the installation of the stainless steel bottom plate with the trapezoidal groove, and the stability of the stainless steel bottom plate with the trapezoidal groove is improved.
The beneficial effects of the utility model reside in that: the vacuum box, the drive loading device and the workpiece to be tested are arranged on the stainless steel bottom plate with the trapezoidal groove, so that the posture adjustment of each mounting platform is not needed, the adjusting mechanism and the adjusting process are simplified, the system rigidity is improved, and the test precision is improved; the vacuum box is made of stainless steel plates and sealing materials through bolt connection, a welding and heat sink system is not needed, the vacuum degree is improved, the structure of the original vacuum tank is simplified, and the cost is reduced; the vacuum box is made into a cuboid, so that the space utilization rate, the vacuumizing speed and the heating speed of the vacuum box can be improved, and energy is saved; the vacuum box is arranged in the constant temperature box to simulate constant temperature thermal environment, and the temperature stability is good.
Drawings
FIG. 1 is a schematic view of a thermal vacuum test apparatus with a vacuum chamber in an oven without the oven.
FIG. 2 is a schematic view of a thermal vacuum test apparatus in which a vacuum box is placed in an oven, together with the oven.
In the figure, 201-an incubator, 202-a driving loading device, 203-a magnetic fluid sealing shaft, 204-a vacuum box, 205-a workpiece to be measured, 206-a stainless steel bottom plate with a trapezoidal groove and 207-a bolt.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in FIGS. 1-2, a thermal vacuum test device with a vacuum box arranged in the incubator comprises an incubator 201, a vacuum box 204, a stainless steel base plate 206 with a trapezoid groove, a vacuum pumping system, a magnetic fluid sealing shaft 203, a driving loading device 202 and a workpiece to be tested 205, wherein the vacuum box 204, the stainless steel base plate 206 with the trapezoid groove, the magnetic fluid sealing shaft 203, the driving loading device 202 and the workpiece to be tested 205 are all arranged in the incubator, the vacuum box 204, the driving loading device 202 and the workpiece to be tested 205 are arranged on the stainless steel base plate 206 with the trapezoid groove, the driving loading device 202 is arranged outside the vacuum box 204, the workpiece to be tested 205 is arranged inside the vacuum box 204, the magnetic fluid sealing shaft 203 is arranged between the vacuum box 204 and the driving loading device 202 and is used for connecting the workpiece to be tested 205 in the vacuum box 204 and the driving loading device 202 outside the vacuum box 204, and ensuring the tightness of the vacuum box 204 while transmitting motion, the magnetic fluid sealing shaft 203 is connected with the vacuum box 204 through a flange, sealing materials and heat insulating materials are arranged at the connection position, an air exhaust hole is formed in the stainless steel bottom plate 206 with a trapezoid groove for installing the vacuum box 204, the vacuum box 204 is vacuumized through a vacuum air exhaust system, and the vacuum environment of a thermal vacuum test is simulated.
The body of the incubator 201 is made of heat-insulating material.
The body of the incubator 201 is made of heat-insulating material. Reduce thermal scattering and disappearing, there is temperature control system inside, can control the inside temperature of thermostated container, the change of the inside temperature of thermostated container can lead to the change of being surveyed work piece 205 temperature in the vacuum chamber 204, the heat that thermostated container 201 temperature control system produced can transmit for being surveyed work piece 205 through heat-conduction and thermal radiation's mode, the temperature change of being surveyed work piece 205 has certain hysteresis quality, when thermostated container 201 long-time during operation, can make the even target temperature that reaches of being surveyed work piece 205, thereby the thermal environment among the simulation thermal vacuum test.
The trapezoidal groove on the stainless steel bottom plate 206 with the trapezoidal groove is not continuous, and the vacuum box 204, the drive loading device 202 and the workpiece 205 to be tested are arranged on the stainless steel bottom plate 206 with the trapezoidal groove through the trapezoidal groove. The installation process is not required to adjust the postures of the installation platforms, the installation becomes simple due to the trapezoid grooves, the coaxiality requirement is easier to meet, meanwhile, the system rigidity can be improved, and therefore the test precision is improved.
The vacuum box 204 is a cuboid and is made of a stainless steel plate and a sealing material which are connected through bolts 207. The utility model discloses do not need the welding, reduced the influence of existence of welding point to vacuum chamber vacuum in the welding process, the vacuum chamber passes through the bolt fastening on the stainless steel bottom plate in area dovetail groove, has sealing material between the stainless steel bottom plate in vacuum chamber and area dovetail groove, realizes the sealed of vacuum chamber, and the vacuum chamber has the observation window, with observation window on the thermostated container is just right, can be in the test process real-time observation vacuum chamber in by the motion state of survey work piece.
The vacuum pumping system is arranged outside the constant temperature box 201, is connected with a pumping hole of the stainless steel bottom plate 206 with the trapezoid groove through a flange plate, and is responsible for pumping the vacuum degree in the vacuum box 204 to be below the specified requirement and simulating the vacuum environment of a thermal vacuum test.
The incubator 201 is mounted on the stainless steel base plate 206 with a trapezoidal groove.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.
Claims (7)
1. The utility model provides a hot vacuum test device in thermostated container is arranged in to vacuum chamber which characterized in that: the device comprises a constant temperature box (201), a vacuum box (204), a stainless steel bottom plate (206) with a trapezoidal groove, a vacuum pumping system, a magnetic fluid sealing shaft (203), a driving loading device (202) and a measured workpiece (205), wherein the vacuum box (204), the stainless steel bottom plate (206) with the trapezoidal groove, the magnetic fluid sealing shaft (203), the driving loading device (202) and the measured workpiece (205) are all arranged in the constant temperature box, the vacuum box (204), the driving loading device (202) and the measured workpiece (205) are arranged on the stainless steel bottom plate (206) with the trapezoidal groove, the driving loading device (202) is arranged outside the vacuum box (204), the measured workpiece (205) is arranged inside the vacuum box (204), the magnetic fluid sealing shaft (203) is arranged between the vacuum box (204) and the driving loading device (202) and is used for connecting the measured workpiece (205) in the vacuum box (204) and the driving loading device (202) outside the vacuum box (204), the tightness of the vacuum box (204) is guaranteed while motion is transmitted, the magnetic fluid sealing shaft (203) is connected with the vacuum box (204) through a flange plate, sealing materials and heat insulation materials are arranged at the joint, an air exhaust hole is formed in a stainless steel bottom plate (206) with a trapezoidal groove, which is used for installing the vacuum box (204), the vacuum box (204) is vacuumized through a vacuum air exhaust system, and the vacuum environment of a thermal vacuum test is simulated.
2. A thermal vacuum test apparatus having a vacuum chamber disposed in an incubator according to claim 1, wherein: the box body of the constant temperature box (201) is made of heat insulation materials.
3. A thermal vacuum test apparatus having a vacuum chamber disposed in an incubator according to claim 1, wherein: the box body of the constant temperature box (201) is made of heat insulation materials.
4. A thermal vacuum test apparatus having a vacuum chamber disposed in an incubator according to claim 1, wherein: the trapezoidal grooves on the stainless steel bottom plate (206) with the trapezoidal grooves are not continuous, and the vacuum box (204), the drive loading device (202) and the workpiece to be tested (205) are arranged on the stainless steel bottom plate (206) with the trapezoidal grooves through the trapezoidal grooves.
5. A thermal vacuum test apparatus having a vacuum chamber disposed in an incubator according to claim 1, wherein: the vacuum box (204) is a cuboid and is formed by connecting a stainless steel plate and a sealing material through a bolt (207).
6. A thermal vacuum test apparatus having a vacuum chamber disposed in an incubator according to claim 1, wherein: the vacuum pumping system is arranged outside the constant temperature box (201), is connected with a pumping hole of a stainless steel bottom plate (206) with a trapezoid groove through a flange plate, and is responsible for pumping the vacuum degree in the vacuum box (204) to be below the specified requirement and simulating the vacuum environment of a thermal vacuum test.
7. A thermal vacuum test apparatus having a vacuum chamber disposed in an incubator according to claim 1, wherein: the constant temperature box (201) is arranged on the stainless steel bottom plate (206) with the trapezoidal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920733531.XU CN210154818U (en) | 2019-05-21 | 2019-05-21 | Thermal vacuum test device with vacuum box arranged in constant temperature box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920733531.XU CN210154818U (en) | 2019-05-21 | 2019-05-21 | Thermal vacuum test device with vacuum box arranged in constant temperature box |
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| CN210154818U true CN210154818U (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920733531.XU Active CN210154818U (en) | 2019-05-21 | 2019-05-21 | Thermal vacuum test device with vacuum box arranged in constant temperature box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018011A (en) * | 2019-05-21 | 2019-07-16 | 浙江工业大学 | Vacuum tank is placed in the thermal vacuum test facility in insulating box |
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2019
- 2019-05-21 CN CN201920733531.XU patent/CN210154818U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018011A (en) * | 2019-05-21 | 2019-07-16 | 浙江工业大学 | Vacuum tank is placed in the thermal vacuum test facility in insulating box |
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