CN113376462A - High-temperature aging test machine with uniform temperature and high-temperature aging test method - Google Patents
High-temperature aging test machine with uniform temperature and high-temperature aging test method Download PDFInfo
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- CN113376462A CN113376462A CN202110639253.3A CN202110639253A CN113376462A CN 113376462 A CN113376462 A CN 113376462A CN 202110639253 A CN202110639253 A CN 202110639253A CN 113376462 A CN113376462 A CN 113376462A
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Abstract
The invention relates to the technical field of aging tests, in particular to a high-temperature aging test machine with uniform temperature and a high-temperature aging test method. The temperature of the inner cavity of the aging test box is rapidly increased, the high-temperature aging test can be performed on a plurality of samples at one time, the efficiency of performing the high-temperature aging test on the samples is improved, the temperature is uniform, and the high-temperature aging test quality is high.
Description
Technical Field
The invention relates to the technical field of aging tests, in particular to a high-temperature aging test machine with uniform temperature and a high-temperature aging test method.
Background
The high-temperature aging tester is equipment for simulating a high-temperature and severe environment test aiming at a product, is important experimental equipment for improving the stability and the reliability of the product, is an important production flow for improving the product quality and the competitiveness of various production enterprises, is widely applied to the fields of power electronics, computers, communication, biopharmaceuticals and the like, and has some defects in the conventional high-temperature aging tester, such as defects; the object is heated unevenly when the high temperature ageing oven carries out high temperature heating, thereby reducing the detection accuracy and greatly reducing the detection efficiency. Therefore, the drawbacks are obvious, and a solution is needed.
Disclosure of Invention
In order to solve the above-mentioned problems, an object of the present invention is to provide a high temperature burn-in tester and a high temperature burn-in testing method with uniform temperature.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-temperature aging tester with uniform temperature comprises a heat insulation rack, an aging test box, a heating device and a controller, wherein the aging test box is provided with a pressure release valve, a first constant-temperature cavity, an accommodating cavity and a second constant-temperature cavity are sequentially arranged in the heat insulation rack from left to right, the heating device is arranged in the heat insulation rack, the output end of the heating device is respectively communicated with the first constant-temperature cavity and the second constant-temperature cavity, the aging test box is positioned in the accommodating cavity, the inner cavity of the aging test box is provided with a plurality of loading platforms which are sequentially arranged from top to bottom, the inner cavity of the aging test box is divided into a plurality of aging test cavities by the plurality of loading platforms, the front side wall and the rear side wall of each aging test cavity are respectively provided with a temperature detection group, each temperature detection group comprises a plurality of temperature sensors arranged in a rectangular array, and the left side wall and the right side wall of each aging test cavity are respectively provided with a matrix valve group, the aging testing chamber is communicated with the first constant-temperature chamber and the second constant-temperature chamber through a matrix valve set, the matrix valve set comprises a plurality of control valves or automatic opening and closing doors, the control valves are arranged in a rectangular array mode, and the matrix valve set, the heating device and the temperature sensor are all electrically connected with the controller.
Furthermore, the left side wall and the right side wall of the aging test box are correspondingly provided with a plurality of sliding grooves, the sliding grooves are arranged from top to bottom, and the plurality of carrying platforms are in one-to-one corresponding sliding connection with the sliding grooves.
Furthermore, the middle part of the carrying platform is in a grid shape.
Further, the bottom of thermal-insulated frame is provided with removes the subassembly, remove the subassembly including installing in the cushion of the bottom of thermal-insulated frame and installing in the truckle of cushion, the truckle is provided with the brake.
Further, the elastic cushion is formed by laminating a plurality of rubber layers.
Furthermore, the controller is internally provided with a microprocessor, an acquisition module and a comparison module, and the acquisition module and the comparison module are electrically connected with the microprocessor.
Furthermore, temperature probes are arranged in the first constant temperature cavity and the second constant temperature cavity and electrically connected with the heating device.
The invention also provides a high-temperature aging test method, which comprises the following operation steps:
step one, after a product is placed on a carrying platform, a box door of an aging test box is closed;
step two, the controller controls all the matrix valve groups to be opened, the heating device provides hot air for the first constant temperature cavity and the second constant temperature cavity, the hot air in the first constant temperature cavity and the second constant temperature cavity enters the corresponding aging test cavities through the corresponding matrix valve groups until the temperature in each aging test cavity reaches a high-temperature aging test temperature value, and then the controller controls all the matrix valve groups to be closed so as to carry out high-temperature aging test on the sample;
step three, in the process of carrying out high-temperature aging test on the sample, the temperature detection group in the aging test cavity can carry out real-time detection on the temperature in the aging test cavity in an all-round and real-time manner, and the temperature sensors arranged in a rectangular array respectively carry out temperature detection on a specific coordinate area in the aging test cavity;
when a certain temperature sensor detects that the temperature of a corresponding coordinate area is lower than a temperature range value required by high-temperature aging test, the temperature sensor feeds back signals to the controller, and the controller controls the opening number of control valves or automatic opening and closing doors at corresponding positions of the aging test cavity and the opening caliber of the control valves or the automatic opening and closing doors according to the difference value between the temperature value detected by the temperature sensor and the high-temperature aging test temperature value, so that the temperature of the coordinate area can quickly reach the high-temperature aging test temperature value, the temperature of the inner cavity of the aging test box is uniform, and the high-temperature aging test is finished;
and step five, opening a box door of the aging test box, and taking out the sample subjected to the high-temperature aging test.
Further, in step three, the temperature probes in the first constant temperature cavity and the second constant temperature cavity are used for detecting the temperature in the first constant temperature cavity and the second constant temperature cavity, and when the temperature probes detect that the temperature in the first constant temperature cavity and the second constant temperature cavity is lower than a preset temperature value, the temperature probes feed back signals to the controller, so that the controller controls the heating device to be started, and the temperature in the first constant temperature cavity and the second constant temperature cavity is constant.
The invention has the beneficial effects that: in practical application, a box door of the aging test box is opened, a plurality of samples are respectively placed on a plurality of loading platforms, the box door of the aging test box is closed, all matrix valve groups are opened at the moment, the heating device is started, hot air is introduced into an inner cavity of the aging test box through the first constant temperature cavity and the second constant temperature cavity, the temperature in the aging test box quickly reaches a temperature value required by high-temperature aging test, and then all the matrix valve groups are closed to carry out high-temperature aging test on the samples; in the process of carrying out high-temperature aging test on a sample, a temperature detection group in an aging test cavity can carry out real-time detection on the temperature in the aging test cavity in an all-round manner, a plurality of temperature sensors arranged in a rectangular array respectively carry out temperature detection on a specific coordinate region in the aging test cavity, and meanwhile, a heating device intermittently introduces hot air into a first constant-temperature cavity and a second constant-temperature cavity to ensure the constant temperature in the first constant-temperature cavity and the second constant-temperature cavity and is favorable for accelerating the adjustment of the temperature of the specific coordinate region in the aging test cavity; when a certain temperature sensor detects that the temperature of a corresponding coordinate area is lower than a temperature range value required by high-temperature aging test, the temperature sensor feeds back signals to the controller, and the controller controls the opening number of the control valves or the automatic opening and closing doors at the corresponding positions of the aging test cavity and the opening caliber of the control valves or the automatic opening and closing doors according to the difference value between the temperature value detected by the temperature sensor and the high-temperature aging test temperature value, so that the temperature of the coordinate area can quickly reach the high-temperature aging test temperature value, the temperature of the inner cavity of the aging test box is uniform, and the high-temperature aging test is completed. The temperature of the inner cavity of the aging test box can be rapidly increased, the high-temperature aging test can be performed on a plurality of samples at one time, the efficiency of the high-temperature aging test on the samples is improved, the temperature is uniform in the high-temperature aging test process, and the effect and the quality of the high-temperature aging test on the samples are improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Description of reference numerals:
1. a heat insulating frame; 2. an aging test box; 3. a heating device; 4. a controller; 5. a pressure relief valve; 6. a first thermostatic chamber; 7. an accommodating cavity; 8. a second thermostatic chamber; 9. a stage; 10. an aging test chamber; 11. a temperature detection group; 12. a temperature sensor; 13. a matrix valve group; 14. a chute; 15. a moving assembly; 16. an elastic pad; 17. a caster wheel; 18. a temperature probe.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
As shown in fig. 1, the high temperature aging tester with uniform temperature provided by the invention comprises a heat insulation frame 1, an aging test chamber 2, a heating device 3 and a controller 4, wherein the aging test chamber 2 is provided with a pressure release valve 5, a first constant temperature chamber 6, a containing chamber 7 and a second constant temperature chamber 8 are sequentially arranged in the heat insulation frame 1 from left to right, the heating device 3 is arranged on the heat insulation frame 1, the output end of the heating device 3 is respectively communicated with the first constant temperature chamber 6 and the second constant temperature chamber 8, the aging test chamber 2 is positioned in the containing chamber 7, the inner chamber of the aging test chamber 2 is provided with a plurality of carrying platforms 9, the carrying platforms 9 are sequentially arranged from top to bottom, the inner chamber of the aging test chamber 2 is divided into a plurality of aging test chambers 10 by the carrying platforms 9, the front side wall and the rear side wall of each aging test chamber 10 are provided with a temperature detection group 11, the temperature detection group 11 comprises a plurality of temperature sensors 12 arranged in a rectangular array, the left side wall and the right side wall of every ageing test chamber 10 all are provided with matrix valve group 13, ageing test chamber 10 is through matrix valve group 13 and first thermostatic chamber 6 and 8 intercommunications in second thermostatic chamber, matrix valve group 13 includes a plurality of control valves or the automatic door that opens and shuts that are the setting of rectangular array, matrix valve group 13, heating device 3 and temperature sensor 12 all are connected with controller 4 electricity, relief valve 5 is used for carrying out the pressure release to the pressure in ageing test box 2.
In practical application, a box door of the aging test box 2 is opened, a plurality of samples are respectively placed on a plurality of loading platforms 9, the box door of the aging test box 2 is closed, all matrix valve groups 13 are opened at the moment, the heating device 3 is started and introduces hot air into an inner cavity of the aging test box 2 through the first constant temperature cavity 6 and the second constant temperature cavity 8, so that the temperature in the aging test box 2 quickly reaches a temperature value required by high-temperature aging test, and then all the matrix valve groups 13 are closed to carry out high-temperature aging test on the samples; in the process of carrying out high-temperature aging test on a sample, the temperature detection group 11 in the aging test cavity 10 can carry out real-time detection on the temperature in the aging test cavity 10 in all directions in real time, the temperature sensors 12 arranged in a rectangular array respectively carry out temperature detection on a specific coordinate region in the aging test cavity 10, and meanwhile, the heating device 3 intermittently introduces hot air into the first constant-temperature cavity 6 and the second constant-temperature cavity 8 to ensure that the temperature in the first constant-temperature cavity 6 and the second constant-temperature cavity 8 is constant, so that the temperature in the specific coordinate region in the aging test cavity 10 can be adjusted quickly; when a certain temperature sensor 12 detects that the temperature of a corresponding coordinate area is lower than a temperature range value required by a high-temperature aging test, the temperature sensor 12 feeds back a signal to the controller 4, and the controller 4 controls the opening number of the control valves or the automatic opening and closing doors at the matrix position corresponding to the matrix valve group 13 in the aging test cavity 10 and the opening caliber size of the control valves or the automatic opening and closing doors according to the difference value between the temperature value detected by the temperature sensor 12 and the high-temperature aging test temperature value, so that the temperature of the coordinate area can quickly reach the high-temperature aging test temperature value, and the temperature of the inner cavity of the aging test box 2 is uniform until the high-temperature aging test is finished. The temperature of the inner cavity of the aging test box 2 can be rapidly increased, the high-temperature aging test can be performed on a plurality of samples at one time, the efficiency of the high-temperature aging test on the samples is improved, the temperature is uniform in the high-temperature aging test process, and the effect and the quality of the high-temperature aging test on the samples are improved.
In this embodiment, the left side wall and the right side wall of the aging testing box 2 are correspondingly provided with a plurality of sliding grooves 14, the plurality of sliding grooves 14 are arranged from top to bottom, and the plurality of carrying platforms 9 are in one-to-one corresponding sliding connection with the plurality of sliding grooves 14. Placing a sample on the carrier 9, and inserting the carrier 9 into the chute 14 to realize the quick installation of the carrier 9; this structural design has realized the modularization of microscope carrier 9 with aging testing case 2, and the dismouting and the maintenance of microscope carrier 9 and aging testing case 2 of being convenient for also are convenient for place the sample on microscope carrier 9.
In this embodiment, the middle of the carrier 9 is in a grid shape; this structural design is favorable to the air current circulation in the aging testing case 2, and the temperature that is favorable to in the aging testing case 2 more is even, has further improved high temperature aging testing's accuracy.
In this embodiment, the bottom of the heat insulation frame 1 is provided with the moving assembly 15, and the moving assembly 15 can rotate, so that the machine can be transferred and carried conveniently; the moving assembly 15 comprises an elastic cushion 16 arranged at the bottom of the heat insulation frame 1 and a caster 17 arranged on the elastic cushion 16; in the moving process of the machine, the elastic pad 16 plays roles of buffering protection, shock absorption and noise reduction, and the moving stability of the machine is improved; the caster 17 is provided with a brake, and the brake is used for braking the caster 17 so that the machine stays at a required position.
In this embodiment, the elastic pad 16 is formed by laminating a plurality of rubber layers; the elastic cushion 16 with the structural design has good elasticity and long service life, and plays a better role in buffering protection and shock absorption and noise reduction.
In this embodiment, the controller 4 is internally provided with a microprocessor, an acquisition module and a comparison module, and the acquisition module and the comparison module are electrically connected with the microprocessor. The acquisition module is used for collecting the temperatures detected by all the temperature sensors 12, and the comparison module compares the temperatures detected by the temperature sensors 12 with the high-temperature aging test temperature, so that the controller 4 can accurately control the opening quantity of the control valves or the automatic opening and closing doors at the corresponding positions and the opening calibers of the control valves or the automatic opening and closing doors, the temperatures at the corresponding positions can be quickly adjusted, and the uniform temperature in the aging test box 2 is ensured.
In this embodiment, temperature probes 18 are disposed in both the first thermostatic chamber 6 and the second thermostatic chamber 8, and the temperature probes 18 are electrically connected to the heating device 3. When temperature probe 18 detects that the temperature in first thermostatic chamber 6 and the second thermostatic chamber 8 is less than the preset temperature value, temperature probe 18 feeds back signals to controller 4, makes controller 4 control heating device 3 start, thereby makes the temperature in first thermostatic chamber 6 and the second thermostatic chamber 8 invariable, is favorable to adjusting the temperature of corresponding position fast, has improved temperature regulation's efficiency.
The invention also provides a high-temperature aging test method, which comprises the following operation steps:
step one, after a product is placed on a carrying platform 9, a box door of the aging test box 2 is closed;
step two, the controller 4 controls all the matrix valve groups 13 to be opened, the heating device 3 provides hot air into the first constant temperature cavity 6 and the second constant temperature cavity 8, the hot air in the first constant temperature cavity 6 and the second constant temperature cavity 8 enters the corresponding aging test cavities 10 through the corresponding matrix valve groups 13 until the temperature in each aging test cavity 10 reaches a high-temperature aging test temperature value, and then the controller 4 controls all the matrix valve groups 13 to be closed so as to perform a high-temperature aging test on the sample;
step three, in the process of carrying out high-temperature aging test on the sample, the temperature detection group 11 in the aging test cavity 10 can carry out real-time detection on the temperature in the aging test cavity 10 in an all-round and real-time manner, and the temperature sensors 12 arranged in a rectangular array respectively carry out temperature detection on a specific coordinate area in the aging test cavity 10;
step four, when a certain temperature sensor 12 detects that the temperature of a corresponding coordinate area is lower than a temperature range value required by a high-temperature aging test, the temperature sensor 12 feeds back a signal to the controller 4, and the controller 4 controls the opening number of control valves or automatic opening and closing doors at corresponding positions of the aging test cavity 10 and the opening caliber size of the control valves or the automatic opening and closing doors according to the difference value between the temperature value detected by the temperature sensor 12 and the high-temperature aging test temperature value, so that the temperature of the coordinate area can quickly reach the high-temperature aging test temperature value, the temperature of an inner cavity of the aging test box 2 is uniform until the high-temperature aging test is finished;
and step five, opening the box door of the aging test box 2, and taking out the sample after the high-temperature aging test.
Further, in step three, the temperature probes 18 in the first constant temperature cavity 6 and the second constant temperature cavity 8 are used for detecting the temperatures in the first constant temperature cavity 6 and the second constant temperature cavity 8, and when the temperature probes 18 detect that the temperatures in the first constant temperature cavity 6 and the second constant temperature cavity 8 are lower than the preset temperature value, the temperature probes 18 feed back signals to the controller 4, so that the controller 4 controls the heating device 3 to start, and the temperatures in the first constant temperature cavity 6 and the second constant temperature cavity 8 are constant.
The invention provides a brand-new intelligent matrix control heating unit, and carries out heating matrix segmentation and fine unit control on the aging test chamber 10, can quickly carry out temperature rise control and uniform temperature control on the temperature of the inner cavity of the aging test box 2, ensures the temperature consistency of different positions of the aging test chamber 10, can carry out high-temperature aging test on a plurality of samples at one time, improves the accuracy of carrying out high-temperature aging test on the samples, has uniform temperature, and ensures the consistency of high-temperature aging test results of a plurality of products. The novel heating mode and the opening and closing of the matrix control valve or the automatic opening and closing door are adopted, and the bottleneck of poor heating temperature uniformity of the conventional aging box and the overshoot control problem of temperature heating are broken through.
All the technical features in the embodiment can be freely combined according to actual needs.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Claims (9)
1. The utility model provides a temperature uniformity's high temperature aging testing machine which characterized in that: the aging testing device comprises a heat insulation rack, an aging testing box, a heating device and a controller, wherein the aging testing box is provided with a pressure release valve, a first constant temperature cavity, a containing cavity and a second constant temperature cavity are sequentially arranged in the heat insulation rack from left to right, the heating device is arranged on the heat insulation rack, the output end of the heating device is respectively communicated with the first constant temperature cavity and the second constant temperature cavity, the aging testing box is positioned in the containing cavity, the inner cavity of the aging testing box is provided with a plurality of carrying platforms which are sequentially arranged from top to bottom, the inner cavity of the aging testing box is divided into a plurality of aging testing cavities by the plurality of carrying platforms, the front side wall and the rear side wall of each aging testing cavity are respectively provided with a temperature detection group, each temperature detection group comprises a plurality of temperature sensors which are arranged in a rectangular array, the left side wall and the right side wall of each aging testing cavity are respectively provided with a matrix valve group, and the aging testing cavity is communicated with the first constant temperature cavity and the second constant temperature cavity through the matrix valve group, the matrix valve group comprises a plurality of control valves or automatic opening and closing doors which are arranged in a rectangular array, and the matrix valve group, the heating device and the temperature sensor are all electrically connected with the controller.
2. The high temperature aging tester with uniform temperature according to claim 1, wherein: the left side wall and the right side wall of the aging test box are correspondingly provided with a plurality of sliding grooves, the sliding grooves are arranged from top to bottom, and the plurality of carrying platforms are in one-to-one corresponding sliding connection with the plurality of sliding grooves.
3. The high temperature aging tester with uniform temperature according to claim 1, wherein: the middle part of the carrying platform is in a grid shape.
4. The high temperature aging tester with uniform temperature according to claim 1, wherein: the bottom of thermal-insulated frame is provided with removes the subassembly, remove the subassembly including installing in the cushion of the bottom of thermal-insulated frame and installing in the truckle of cushion, the truckle is provided with the brake.
5. The high temperature aging tester with uniform temperature according to claim 4, wherein: the elastic cushion is formed by laminating a plurality of rubber layers.
6. The high temperature aging tester with uniform temperature according to claim 1, wherein: the controller is internally provided with a microprocessor, an acquisition module and a comparison module, and the acquisition module and the comparison module are electrically connected with the microprocessor.
7. The high temperature aging tester with uniform temperature according to claim 1, wherein: and temperature probes are arranged in the first constant temperature cavity and the second constant temperature cavity and are electrically connected with the heating device.
8. A high-temperature aging test method is characterized in that: the high temperature weatherometer as claimed in any one of claims 1 to 7, comprising the following operational steps:
step one, after a product is placed on a carrying platform, a box door of an aging test box is closed;
step two, the controller controls all the matrix valve groups to be opened, the heating device provides hot air for the first constant temperature cavity and the second constant temperature cavity, the hot air in the first constant temperature cavity and the second constant temperature cavity enters the corresponding aging test cavities through the corresponding matrix valve groups until the temperature in each aging test cavity reaches a high-temperature aging test temperature value, and then the controller controls all the matrix valve groups to be closed so as to carry out high-temperature aging test on the sample;
step three, in the process of carrying out high-temperature aging test on the sample, the temperature detection group in the aging test cavity can carry out real-time detection on the temperature in the aging test cavity in an all-round and real-time manner, and the temperature sensors arranged in a rectangular array respectively carry out temperature detection on a specific coordinate area in the aging test cavity;
when a certain temperature sensor detects that the temperature of a corresponding coordinate area is lower than a temperature range value required by high-temperature aging test, the temperature sensor feeds back signals to the controller, and the controller controls the opening number of control valves or automatic opening and closing doors at corresponding positions of the aging test cavity and the opening caliber of the control valves or the automatic opening and closing doors according to the difference value between the temperature value detected by the temperature sensor and the high-temperature aging test temperature value, so that the temperature of the coordinate area can quickly reach the high-temperature aging test temperature value, the temperature of the inner cavity of the aging test box is uniform, and the high-temperature aging test is finished;
and step five, opening a box door of the aging test box, and taking out the sample subjected to the high-temperature aging test.
9. The high temperature aging test method according to claim 8, wherein: in the third step, the temperature probes in the first constant temperature cavity and the second constant temperature cavity are used for detecting the temperature in the first constant temperature cavity and the second constant temperature cavity, and when the temperature probes detect that the temperature in the first constant temperature cavity and the second constant temperature cavity is lower than a preset temperature value, the temperature probes feed back signals to the controller, so that the controller controls the heating device to be started, and the temperature in the first constant temperature cavity and the second constant temperature cavity is constant.
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| CN117839776A (en) * | 2024-01-05 | 2024-04-09 | 广州威德玛环境仪器有限公司 | Temperature change test box early warning system |
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Application publication date: 20210910 |