CN114025519A - Test system protector under extreme environment - Google Patents
Test system protector under extreme environment Download PDFInfo
- Publication number
- CN114025519A CN114025519A CN202110905206.9A CN202110905206A CN114025519A CN 114025519 A CN114025519 A CN 114025519A CN 202110905206 A CN202110905206 A CN 202110905206A CN 114025519 A CN114025519 A CN 114025519A
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- equipment
- box body
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- temperature
- extreme environment
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- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 230000001012 protector Effects 0.000 title claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000005485 electric heating Methods 0.000 claims abstract description 15
- 238000005057 refrigeration Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 238000007791 dehumidification Methods 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 10
- 238000009423 ventilation Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Physics & Mathematics (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The application provides test equipment protector under extreme environment includes: the box body is used for accommodating the testing equipment, the inner wall and the outer wall of the box body are both made of steel plates, heat insulation filling materials are arranged between the inner wall and the outer wall, one side of the box body is provided with a lead hole, and the front wall and the rear wall of the box body are provided with single-opening hinge doors; the electric heating device is characterized by comprising a heating device formed in an electric heating tube mode, a dehumidifying device formed by a dehumidifier and a refrigerating device formed by an evaporator, a compressor, a coil and an axial flow fan, wherein the electric heating tube, the dehumidifier and the evaporator are arranged in a ventilating duct, and a stirring fan is arranged at an air outlet of the ventilating duct; and the temperature and humidity sensor is arranged at the top of the box body and close to the air outlet, and the electronic controller connected with the refrigeration equipment, the heating equipment and the dehumidification equipment controls the refrigeration equipment, the heating equipment and the dehumidification equipment to adjust the temperature and the humidity through signal feedback of the temperature and humidity sensor, so that a set temperature and humidity environment is kept in the box body.
Description
Technical Field
The application belongs to the technical field of airplane climate environment tests, and particularly relates to a test system protection device in an extreme environment.
Background
Because the flight environment of an airplane is complex, the airplane usually needs to carry out airplane environment tests in the design stage to verify that the airplane can adapt to various complex environments. When a climate environment test is carried out in a laboratory, such as high temperature (highest temperature +74 ℃), low temperature (lowest temperature-55 ℃), damp heat, rain, freezing rain and the like, test equipment on a test site needs to be capable of reliably working for a long time under various severe environments. Various extreme environments, particularly temperature and humidity, can affect the working performance of electronic components in the test equipment, cause measurement result distortion, and even damage the test equipment.
In the industrial field, the normal working environment temperature of electronic devices of general test equipment is-40 ℃ to +50 ℃, the environmental humidity is required to be less than 50% RH, and in order to ensure the reliability of the test equipment in extreme environments, a test equipment protection device is needed to solve the problem of environmental tolerance of the test equipment and ensure that the test equipment can normally work for a long time in extreme high/low temperature and damp and hot environments.
Disclosure of Invention
It is an object of the present application to provide a test equipment guard in extreme environments that solves or mitigates at least one of the problems of the background art.
The technical scheme of the application is as follows: a test device guard in an extreme environment, the guard comprising:
the testing device comprises a box body, wherein the box body is internally provided with a placing space for containing testing equipment, the inner wall and the outer wall of the box body are both made of steel plates, heat insulation filling materials are arranged between the inner wall and the outer wall, the side wall of the box body is provided with a lead hole for the cable of the testing equipment to pass in and out, and the front wall and the rear wall of the box body are provided with single-opening hinge doors;
the electric heating device comprises heating equipment formed in an electric heating pipe mode, dehumidifying equipment formed by a dehumidifier and refrigerating equipment formed by an evaporator, a compressor, a coil pipe and an axial flow fan, wherein the electric heating pipe, the dehumidifier and the evaporator are arranged in a ventilation pipeline, and an air outlet of the ventilation pipeline is provided with a stirring fan; and
the temperature and humidity sensor is arranged at the top of the box body and close to the air outlet, and the electronic controller connected with the refrigeration equipment, the heating equipment and the dehumidification equipment controls the refrigeration equipment, the heating equipment and the dehumidification equipment to adjust the temperature and the humidity through signal feedback of the temperature and humidity sensor, so that a set temperature and humidity environment is kept in the box body.
Furthermore, the thickness of the outer wall of the box body is larger than that of the inner wall of the box body.
Further, the heat insulation filling material is a rigid polyurethane foam heat insulation material.
Furthermore, a silicon rubber sealing gasket is arranged at the lead hole.
Further, the hinged doors on the front wall and the rear wall are opposite in door opening direction.
Furthermore, the bottom of the ventilation pipeline is provided with a condensed water collecting hole, the bottom of the condensed water collecting hole is provided with a drain pipe, and condensed water in the box body can be discharged outside the box body through the drain pipe.
Furthermore, an adjustable air guide device is additionally arranged at the air outlet and used for adjusting the air outlet direction and the air outlet quantity.
Furthermore, the bottom of the box body is provided with a universal wheel with a self-locking function, and the universal wheel is used for moving the protection device.
The test equipment protector under extreme environment that this application provided has following advantage:
1) the heat insulation treatment with the external environment is realized, and the heat transfer between the internal environment and the external environment of the protection device is effectively reduced;
2) the extrusion type flexible sealing measure is adopted, so that the protection device has good sealing performance;
3) the device has the functions of heating, refrigerating and dehumidifying, and provides a proper temperature and humidity environment for test equipment in the protection device;
4) the controllable internal circulation mode is adopted, so that the heat exchange efficiency of air in the device is improved;
5) the adjustable air guide device is adopted, so that the uniformity of air temperature and humidity in the protective device is ensured;
6) the temperature and humidity can be accurately controlled through a built-in electronic controller;
7) the protection device has accessibility, is convenient to overhaul and maintain and has strong practicability.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
FIG. 1 is a front cross-sectional view of a test equipment guard of the present application.
FIG. 2 is a side view of the test equipment guard of the present application.
FIG. 3 is a top cross-sectional view of the test equipment guard of the present application.
Reference numerals:
11-Steel plate
12-insulating filling material
13-handle
14-lead hole
15-sealing gasket
16-guide wheel
17-temperature and humidity sensor
18-wind guide device
19-hinge door
20-sealing strip
21-axial fan, 211-coil
22-compressor
23-evaporator
24-dehumidifier
25-stirring fan
26-electric heating tube
27-electronic controller
28-condensate collecting hole
29-water drainage pipe
30-test device
31-ventilating duct
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
In order to solve the problem of environmental tolerance of the test equipment 30 in an extreme environment and ensure that the test equipment 30 can be in a test environment in which the air temperature is maintained at 20 ℃ and the humidity is maintained at 30 RH% in the extreme high-low temperature and damp-heat environment, the application provides the test equipment protection device in the extreme environment.
The protective device of the test equipment mainly comprises the following components:
the external shape is a box body of a rectangular parallelepiped structure, and in this embodiment, the size of the box body is 2700 × 2196 × 1700 (mm). The box body is provided with a containing space, and two test devices 30 can be arranged. The inner wall and the outer wall of the box body are both made of steel plates 11, and the thickness of the steel plates on the outer wall is larger than that of the steel plates on the inner wall. For example, in this embodiment, an SUS316 stainless steel plate having a thickness of 2mm is used for the outer wall, and an SUS304 stainless steel plate having a thickness of 1mm is used for the inner wall. And a heat insulation filling material 12 is arranged between the inner wall and the outer wall of the box body, and the heat insulation filling material 12 can reduce the heat transfer between the internal environment of the box body and the external environment. In this example, the heat insulating filler was filled with a rigid polyurethane foam heat insulating material having a thickness of 100 mm.
The left or right side wall of the box is provided with two lead holes 14 for the entry and exit of cables of the test equipment 30, and in the illustrated embodiment, the two lead holes 14 are located on the same side of the box. Preferably, a silicone rubber gasket capable of resisting extreme environments is arranged at the lead hole 14 to realize sealing.
The front side wall and the rear side wall of the box body are respectively provided with a single-opening hinged door 19, the front side wall and the rear side wall are respectively used for maintenance and operation of equipment in the box body, and a silicon rubber sealing strip is arranged between the hinged door 19 and the box body for sealing. In this application, the hinged doors 19 on the front and rear walls rotate in opposite directions.
In addition, the box body is also provided with a handle 13, so that the box body is convenient to carry.
Heating equipment, refrigerating equipment (the refrigerating equipment comprises an evaporator 23, a compressor 22, a coil 211 and an axial flow fan 21) and dehumidifying equipment are arranged in the box body, the heating equipment 26 adopts an electric heating pipe 26 for heating, the maximum power is 10kW, the refrigerating equipment adopts a single-stage refrigerating compressor as a refrigerating mode, the cooling mode is air cooling, and the dehumidifying equipment adopts a dehumidifier 24.
The interior of the box body adopts an air internal circulation mode, the electric heating pipe 26, the evaporator 23 and the dehumidifier 24 are arranged in the ventilation pipeline 31 from top to bottom, and are rotated by the centrifugal stirring fan 25 arranged in the ventilation pipeline 31, so that hot air generated by the electric heating pipe 26 or cold air generated by refrigeration equipment is mixed and stirred, and is discharged into the box body through an air outlet at the upper part of the ventilation pipeline 31.
In order to ensure that the temperature and humidity of the whole inner part are uniformly distributed, an adjustable air guide device 18 is additionally arranged at the air outlet, and the air outlet direction and the force or the ventilation quantity can be adjusted.
In order to realize accurate control of the temperature and humidity of air inside the box body, a temperature and humidity sensor 17 is arranged at the position, close to the air outlet, of the top of the box body, an electronic controller 27 automatically adjusts the refrigeration equipment, the heating equipment and the dehumidification equipment through signal feedback of the temperature and humidity sensor 17, and adjusted air is stirred by a stirring fan 25 and then passes through an electric heating pipe 26 and an evaporator 23 from a lower air return opening to return to the air outlet again to continuously circulate and regulate, so that the set temperature and humidity of a test area are kept.
The bottom of a ventilating duct 31 in the box body is provided with a condensed water collecting hole 28, the bottom of the condensed water collecting hole 28 is provided with a drain pipe 29, and condensed water in the box body can be discharged to the outside of the box body through the drain pipe 29.
The bottom of the box body is provided with a universal wheel 16 with a self-locking function, and the universal wheel is used for moving the protection device.
Before carrying out a test of the aircraft climate environment in the laboratory in an extreme environment, the protective device is first moved into the laboratory and the test device 30 is energized. And after the power is normally switched on, opening a hinged door 19 on the protection device, moving the test equipment into the box body, starting the protection device after the temperature and humidity target value of the protection device is set, and then closing the hinged door 19.
In the test process, under the influence of self heating of the test equipment 30 and slow heat transfer of the external environment, when the temperature in the box body is higher than a set target value, the electronic controller 27 automatically turns on the refrigeration equipment and the stirring fan 25, automatically adjusts the air temperature in the box body, and after the air temperature reaches the target temperature, the electronic controller 27 automatically turns off the refrigeration equipment and the stirring fan 25; when the temperature in the box body is lower than a set target value, the electronic controller 27 automatically turns on the electric heating pipe 26 and the stirring fan 25, automatically adjusts the air temperature in the box body, and after the air temperature reaches the target temperature, the electronic controller 27 automatically turns off the electric heating pipe 26 and the stirring fan 25; when the humidity in the box body is lower than a set target value, the dehumidifier 24 does not work; when the humidity in the box body is higher than the set target value, the electronic controller 27 automatically starts the dehumidifier 24 to dehumidify the air in the box body, and when the humidity in the box body reaches the target set value, the dehumidifier 24 stops working. During the test, the condensate water produced in the tank is discharged out of the protection device through the condensate water collecting hole 28 and the drain pipe 29.
The test equipment protector under extreme environment that this application provided has following advantage:
1) the heat insulation treatment with the external environment is realized, and the heat transfer between the internal environment and the external environment of the protection device is effectively reduced;
2) the extrusion type flexible sealing measure is adopted, so that the protection device has good sealing performance;
3) the device has the functions of heating, refrigerating and dehumidifying, and provides a proper temperature and humidity environment for test equipment in the protection device;
4) the controllable internal circulation mode is adopted, so that the heat exchange efficiency of air in the device is improved;
5) the adjustable air guide device is adopted, so that the uniformity of air temperature and humidity in the protective device is ensured;
6) the temperature and humidity can be accurately controlled through a built-in electronic controller;
7) the protection device has accessibility, is convenient to overhaul and maintain and has strong practicability.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A test device protector in an extreme environment, the protector comprising:
the testing device cable box is characterized in that a box body for containing a placing space of testing equipment (30) is arranged in the box body, the inner wall and the outer wall of the box body are both made of steel plates, heat insulation filling materials (12) are arranged between the inner wall and the outer wall, the side wall of the box body is provided with a lead hole (14) for the test equipment cable to enter and exit, and the front wall and the rear wall of the box body are provided with single-opening hinge doors (19);
the device comprises heating equipment formed by an electric heating pipe (26), dehumidifying equipment formed by a dehumidifier (24) and refrigerating equipment formed by an evaporator (23), a compressor (22), a coil (211) and an axial flow fan (21), wherein the electric heating pipe (26), the dehumidifier (24) and the evaporator (23) are arranged in a ventilating duct (31), and an air outlet of the ventilating duct (31) is provided with a stirring fan (25); and
the temperature and humidity sensor (17) is arranged at the top of the box body and close to the air outlet, and an electronic controller (27) connected with the refrigeration equipment, the heating equipment and the dehumidification equipment controls the refrigeration equipment, the heating equipment and the dehumidification equipment to adjust the temperature and the humidity through signal feedback of the temperature and humidity sensor (17), so that a set temperature and humidity environment is kept in the box body.
2. The extreme environment test equipment shield of claim 1 wherein the outer wall of the enclosure has a thickness greater than a thickness of the inner wall.
3. The extreme environment test equipment protector as claimed in claim 1, wherein the insulating filling material (12) is a rigid polyurethane foam insulation.
4. The extreme environment test equipment protector as claimed in claim 1, characterised in that a silicone rubber gasket is provided at the lead hole (14).
5. The extreme environment test equipment shelter of claim 1, wherein the hinged doors (19) on the front and rear walls open in opposite directions.
6. The protective device for testing equipment in extreme environment as claimed in claim 1, wherein a condensed water collecting hole (28) is provided at the bottom of the ventilating duct (31), a drain pipe (29) is provided at the bottom of the condensed water collecting hole (28), and the condensed water in the box body can be drained to the outside of the box body through the drain pipe (29).
7. The protective device for testing equipment in extreme environment as claimed in claim 1, wherein an adjustable air guiding device (18) is added at the air outlet for adjusting the air outlet direction and air outlet amount.
8. The extreme environment test equipment shelter as claimed in claim 1, wherein universal wheels (16) with self-locking function are mounted at the bottom of the box for the moving operation of the shelter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905206.9A CN114025519A (en) | 2021-08-08 | 2021-08-08 | Test system protector under extreme environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905206.9A CN114025519A (en) | 2021-08-08 | 2021-08-08 | Test system protector under extreme environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114025519A true CN114025519A (en) | 2022-02-08 |
Family
ID=80054299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110905206.9A Pending CN114025519A (en) | 2021-08-08 | 2021-08-08 | Test system protector under extreme environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114025519A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526937A (en) * | 2022-04-22 | 2022-05-24 | 中国飞机强度研究所 | Hot air replacement system for testing high-temperature environment of airplane and replacement method thereof |
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