CN116984037A - Vibration-resistant multifunctional environment simulation test box for test - Google Patents
Vibration-resistant multifunctional environment simulation test box for test Download PDFInfo
- Publication number
- CN116984037A CN116984037A CN202310964962.8A CN202310964962A CN116984037A CN 116984037 A CN116984037 A CN 116984037A CN 202310964962 A CN202310964962 A CN 202310964962A CN 116984037 A CN116984037 A CN 116984037A
- Authority
- CN
- China
- Prior art keywords
- test
- vibration
- chamber
- box
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 213
- 238000004088 simulation Methods 0.000 title claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 65
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 238000005057 refrigeration Methods 0.000 claims abstract description 15
- 238000004378 air conditioning Methods 0.000 claims description 16
- 230000007613 environmental effect Effects 0.000 claims description 11
- 238000001704 evaporation Methods 0.000 claims description 11
- 230000008020 evaporation Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 239000010960 cold rolled steel Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 4
- 238000010257 thawing Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000004781 supercooling Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000007590 electrostatic spraying Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a multifunctional environment simulation test box for vibration resistance test, which adopts a three-box type integral structure and comprises a working chamber positioned in the middle of the test box, a pre-cooling chamber positioned at the rear of the test box, and a preheating chamber and a control chamber which are positioned at the front of the test box in parallel, wherein the preheating chamber and the pre-cooling chamber are respectively communicated with the working chamber; wherein, heating device has been placed in the preheating chamber, is equipped with air supply, vibration test and ultraviolet test device in the working chamber, has placed refrigerating plant in the precooling chamber, has placed controlling means in the control chamber, above each device be connected with controlling means respectively for at least one kind of simulated environment test in heating, vibration, ultraviolet irradiation and refrigeration is carried out in the working chamber. The test box can be used for switching and combining various natural test environments and mechanical test environments, meets the requirement of wider environment simulation test, has high integration level, can realize various purposes by only purchasing a single set of equipment, and has wide market application prospect.
Description
Technical Field
The invention belongs to the technical field of environmental test equipment, and particularly relates to a multifunctional environmental simulation test box for vibration resistance test.
Background
The environment test box is an acceleration test device for realizing indoor simulation of natural environment and mechanical environment, and is used for researching performance indexes and mechanisms of materials and products in related environments. Compared with natural environment tests, the environment test box can obtain a large amount of data in a short time, so that the environment test box has wide application, particularly in the field of aerospace, such as an aircraft taking off from the flat ground, when the aircraft rises to the altitude of nearly one thousand meters, the process can be carried out from 20 ℃ to-50 ℃ in a few minutes, and other environmental factors such as temperature, humidity, pressure and the like are changed sharply, so that the corresponding test box product is required to simulate the high-altitude environment condition before leaving the factory.
For the above reasons, the space product is required to be more similar to the environment where the real working state of the product is located in the simulation environment test, and the test under the action of single environmental stress cannot effectively check the performance stability of the real working state of the product, so that the multi-stress environment simulation test becomes very important even in the initial stage of product development. However, most of environmental test boxes on the market at present only have a single test function, for example, chinese patent CN115608425a discloses a high-low temperature test box for constant test, which comprises a high-low temperature test box main body, a test room is provided above the front side wall of the high-low temperature test box main body, an air outlet box is provided above the test room, a plurality of groups of air outlet holes are provided at the bottom of the air outlet box, a moving mechanism is provided on the rear side wall of the test room, a fixed plate is provided on the right side wall of the test room, a first rack is provided on the left side wall and the right side wall of the test room, cavities are provided in the three groups of placing plates, and an adjusting mechanism is provided in the three groups of cavities. The test chamber can uniformly distribute hot air or cold air blown out from the air outlet hole in the test chamber, so that the temperature in the test chamber is in a constant state, and the accuracy of a test result is improved. Therefore, a test box capable of integrating natural environment and mechanical environment in a coupling way is needed, and a simulated environment test is carried out on an aircraft on the ground under the working condition, so that the aircraft can endure various environments for a long time.
In view of the above, the present inventors have proposed a multifunctional environmental simulation test chamber for vibration resistance test to overcome the drawbacks of the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a multifunctional environment simulation test box for vibration resistance tests, which not only can carry out natural environment resistance tests such as high-low temperature tests and ultraviolet tests, but also can carry out mechanical environment resistance tests for vibration tests in a compatible manner, namely, the test box has high integration level, is convenient for carrying out environment simulation tests under the working condition on related samples such as an aircraft and the like in the same test box, and prolongs the service life of the test box in various environments.
The invention aims at solving the problems by the following technical scheme:
a vibration-resistant test is with multi-functional environmental simulation test case, the test case adopts three box overall structure, includes: the preheating chamber and the pre-cooling chamber are respectively communicated with the working chamber;
the device comprises a preheating chamber, a heating device, an air supply device, a vibration test device and an ultraviolet test device, wherein the heating device is arranged in the preheating chamber, a refrigerating device is arranged in the precooling chamber, a control device is arranged in the control chamber, the control device is respectively connected with the heating device, the vibration test device, the ultraviolet test device and the refrigerating device and used for heating, vibrating, ultraviolet irradiating and refrigerating a sample to be tested in the working chamber to simulate at least one environment test, and meanwhile, the control device is connected with the air supply device and used for enabling the temperature distribution in the working chamber to be uniform.
Further, the heating device is composed of a relay, an alternating current contactor and a heating rod, wherein the alternating current contactor is positioned between the relay and the heating rod and is respectively connected with the relay and the heating rod, and a control end of the relay is connected with the control device.
Further, the air supply device comprises an air conditioning box and a centrifugal fan impeller, the centrifugal fan impeller is arranged at an air outlet of the air conditioning box and is used for adjusting the uniformity of air supply of the air conditioning box, and the air conditioning box and the centrifugal fan impeller are connected with the control device.
Further, the vibration test device is composed of a vibration generator, a digital switch power amplifier, a vibration controller, a sensor and a cooling fan, wherein the cooling fan is connected with the vibration generator, the vibration generator is connected with the control device and is located below the sample carrying table and connected with the sample carrying table, the output end of the digital switch power amplifier is connected with the vibration generator, the input end of the digital switch power amplifier is connected with the output end of the vibration controller, the input end of the vibration controller is connected with the sensor, and the sensor is used for collecting vibration signals of samples to be tested on the sample carrying table.
Further, the ultraviolet test device is composed of a plurality of ultraviolet lamp tubes and a power regulator, the plurality of ultraviolet lamp tubes are arranged in parallel and installed on the inner top wall of the working chamber, the input end of the power regulator is connected with the control device, and the output end of the power regulator is connected with the plurality of ultraviolet lamp tubes.
Further, the refrigerating device is composed of a compressor and an evaporation condenser, the control end of the compressor is connected with the control device, the output end of the compressor is connected with the input end of the evaporation condenser, and the output end of the evaporation condenser is used for conveying refrigerating gas.
Further, the control device consists of a control screen and a controller, wherein the communication end of the control screen is connected with the communication end of the controller, and the control screen is used for carrying out digital display and test parameter setting;
the control screen displays first warning information when the heating device has a short circuit condition, displays second warning information when the refrigerating device has an overload or overpressure condition, and displays third warning information when the air supply device has an overload condition; when the control screen displays any one of the first warning information, the second warning information and the third warning information, the controller can correspondingly cut off the connection with the heating device, the air supply device and/or the refrigerating device.
Further, the outer shell of the test box is made of cold-rolled steel plates, the outer surface of the cold-rolled steel plates is subjected to electrostatic spraying, the inner wall of the test box is formed by adopting SUS304 stainless steel plates through TIG seamless welding, and meanwhile, heat insulation material materials are filled between the outer shell and the inner wall.
Further, be provided with the list that is used for getting to put the sample that awaits measuring on the lateral wall of studio and open the door, be provided with the sealing strip between the fixed side that singly opens the door and the lateral wall of studio, install electric heat defroster on the activity side that singly opens the door, electric heat defroster is connected with controlling means for get rid of the condensation or the frosting of the activity side border that singly opens the door when refrigeration simulation environment test, just the below that singly opens the door is provided with the water collector.
Further, an observation window for observing the state of a sample to be tested in the working chamber is arranged on the single door, a single light shielding door is arranged outside the observation window, and an LED white light tube is arranged in the observation window.
Compared with the prior art, the invention has the following beneficial effects:
1. the test box provided by the invention adopts a three-box type integral structure and comprises a preheating chamber, a working chamber, a precooling chamber and a control chamber; the working chamber is positioned in the middle of the test box, the preheating chamber and the control chamber are positioned in the front of the test box, the precooling chamber is positioned at the rear of the test box, the preheating chamber and the precooling chamber are respectively communicated with the working chamber, a vibration test device is arranged below a sample carrying table in the working chamber, an ultraviolet test device is arranged at the top of the working chamber, and a heating device in the preheating chamber, a refrigerating device in the precooling chamber, the vibration test device and the ultraviolet test device are respectively connected with a control device in the control chamber. The test box can simulate a high-temperature environment, a vibration environment, an ultraviolet environment and a low-temperature environment singly through different control of the control device, the test environments can be coupled together, the cold and hot impact temperature resistant environment, the ultraviolet-high-temperature environment, the ultraviolet-low-temperature environment, the ultraviolet-vibration environment, the vibration-high-temperature environment, the vibration-low-temperature environment, the ultraviolet-high-temperature-vibration environment, the ultraviolet-low-temperature-vibration environment, the ultraviolet-high-temperature-low-temperature-vibration environment and the like can be switched in a combined mode, and parameters of each simulation environment can be effectively controlled; therefore, the test box can be used for switching and combining various natural test environments and mechanical test environments, not only meets the wider environment simulation test requirements, but also has higher integration level, and can realize various purposes by purchasing single-set equipment by users, and has wide market application prospect.
2. According to the test box provided by the invention, the air supply device consisting of the air conditioning box and the centrifugal fan impeller is arranged in the working chamber, so that the temperature in the working chamber can be uniform through the air supply device, and the influence on the accuracy of a test sample in a simulated environment test caused by local supercooling or overheating in the working chamber is avoided.
3. According to the test box provided by the invention, the heating device, the air supply device, the vibration device, the ultraviolet test device and the refrigeration device are highly integrated in the test box, so that the requirement of the test box on hardware configuration is greatly reduced, the cost of the test box and the volume of the test box are effectively controlled, and the waste of purchase funds, sites, energy sources and the like is avoided; meanwhile, the test box has good operability, maintainability and safety, and does not pollute the environment and harm the health of human bodies.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate principles of the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of the structure of a multifunctional environmental simulation test chamber of the present invention;
FIG. 2 is a schematic view of the construction of a working chamber in the multifunctional environmental simulation test chamber of the present invention.
Wherein: 1 is a preheating chamber; 2 is a working chamber; 3 is a precooling chamber; 4 is a control room; 5 is a heating device; 6 is an air supply device; 7 is a vibration test device; 8 is an ultraviolet test device; 9 is a refrigerating device; 10 is a control device; 11 is a single door; 12 is a viewing window.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of devices that are consistent with aspects of the invention that are set forth in the following claims.
The present invention will be described in further detail below with reference to the drawings and examples for better understanding of the technical solutions of the present invention to those skilled in the art.
Referring to fig. 1-2, the embodiment of the invention provides a multifunctional environmental simulation test box for vibration resistance test, which adopts a horizontal three-box type integral structure, and comprises a preheating chamber 1, a working chamber 2, a pre-cooling chamber 3 and a control chamber 4, wherein the working chamber 2 is positioned in the middle of the test box, the preheating chamber 1 and the control chamber 4 are positioned in the front of the test box in parallel, the pre-cooling chamber 3 is positioned at the rear of the test box, and the preheating chamber 1 and the pre-cooling chamber 3 are respectively communicated with the working chamber 2, preferably through expansion plates, so that energy consumption is saved when single high-temperature resistant or low-temperature resistant simulation test is performed. Wherein, heating device 5 has been placed in preheating chamber 1, be provided with air supply arrangement 6 in the working chamber 2, vibration test device 7 and ultraviolet test device 8, cooling device 9 has been placed in the precooling chamber 3, control device 10 has been placed in the control chamber 4, and this control device 10 is connected with heating device 5 respectively, vibration test device 7, ultraviolet test device 8 and cooling device 9, be used for carrying out the simulation environment test of at least one of heating, vibration, ultraviolet irradiation and refrigeration to the sample that awaits measuring in working chamber 2, control device 10 is connected with air supply arrangement 6 simultaneously, be used for making the temperature distribution in the working chamber 2 even, improve the accuracy of simulation environment.
Through the above arrangement, the sample to be measured placed on the sample carrying table in the working chamber 2 can be subjected to a high temperature resistant simulation test by the heating device 5, a vibration simulation test by the vibration test device 7, an ultraviolet irradiation simulation test by the ultraviolet test device 8, or a low temperature resistant simulation test by the refrigerating device 9 under the control of the control device 10. Therefore, the multifunctional comprehensive simulation test box can singly simulate a high-temperature environment, a vibration environment, an ultraviolet environment and a low-temperature environment, and simultaneously the multifunctional comprehensive simulation test box can couple any two or more than two of the heating device 5, the vibration test device 7, the ultraviolet test device 8 and the refrigerating device 9 together through the control device 10, so that the multifunctional comprehensive simulation test box can simulate a cold and hot impact temperature resistant environment, an ultraviolet-high-temperature environment, an ultraviolet-low-temperature environment, an ultraviolet-vibration environment, a vibration-high-temperature environment, a vibration-low-temperature environment, an ultraviolet-high-temperature-vibration environment, an ultraviolet-low-temperature-vibration environment, an ultraviolet-high-temperature-low-temperature-vibration environment and the like. Therefore, the test box provided by the invention can enable the natural test environment and the mechanical test environment to be coupled and integrated and be freely combined and switched, so that the universality of the test box is improved, a user can realize multiple purposes by purchasing a single set of equipment, and the market competitiveness of the test box is improved. The test box can be used for carrying out simulated environment tests on the aircraft under various working conditions on the ground, so that the aircraft can endure the environment and can be used for a long time.
Specifically, the materials of the test chamber of the invention can be selected according to the use requirements. Preferably, the outer shell of the test box is prepared from a cold-rolled steel plate, the outer surface of the cold-rolled steel plate is subjected to electrostatic spraying, and the inner wall of the test box is formed by performing TIG seamless welding on an SUS304 stainless steel plate, so that the test box has higher strength and better tightness, and no leakage phenomenon occurs after long-term test. It is worth noting that in order to avoid the rapid heat loss during the high-low temperature simulation test, a heat insulation material is filled between the shell and the inner wall, and the heat insulation material is formed by compounding polyurethane foaming material and superfine centrifugal glass wool, and the thickness is 120-130 mm.
In order to facilitate taking and placing of a sample to be measured, a notch is formed in the side wall of the working chamber 2, a single door 11 is arranged at the notch, the opening angle of the single door 11 is more than or equal to 120 degrees, and a sealing strip is used for sealing between the fixed side of the single door 11 and the side wall of the working chamber 2, and the sealing strip is preferably a double high-low temperature resistant silicone rubber sealing strip so as to ensure good sealing performance and enable the sealing position to resist high and low temperatures and ageing. In addition, an electric defrosting device is arranged on the movable side of the single door 11, and a water receiving disc is arranged below the single door 11, the electric defrosting device is used for removing condensation or frosting on the edge of the movable side of the single door 11, and the water receiving disc is used for receiving condensed water attached to the inner wall of the single door 11.
Further, in order to facilitate the staff to observe the state of the sample to be measured in the working chamber 2 at any time, the embodiment of the invention is provided with an observation window 12 on the single door 11, a single light-shielding door is arranged outside the observation window 12, and an LED white light tube is arranged inside the observation window. The type of glass mounted on the observation window 12 may be selected in advance according to the need, for example, in this embodiment, an electrothermal film multi-layer hollow glass is used as the observation window glass, and this glass has high light transmittance and good heat insulation effect, and can visually observe the condition of each corner in the working chamber 2 through this glass.
In the embodiment of the invention, the heating device 5 consists of a relay, an alternating current contactor and a heating rod, wherein the alternating current contactor is positioned between the relay and the heating rod and is respectively connected with the relay and the heating rod, and the control end of the relay is connected with the control device 10. The relay is used as an electronic control device and plays roles of automatic regulation, safety protection, circuit switching and the like in a circuit; the relay adopted in this embodiment is an electromagnetic relay, the operating voltage of the electromagnetic relay is dc 24V, the closing voltage is less than or equal to 75% of the operating voltage, the opening voltage is greater than or equal to 12% of the operating voltage, and the electromagnetic relay has 4 pairs of contacts, and the closed circuit current value that each contact can bear is 12A. In addition, the ac contactor is a component that uses electromagnetic force and spring force to match to realize the connection and disconnection of the contacts therein, the type of the ac contactor can be preset according to the use requirement, for example, the ac contactor can be an air electromagnetic ac contactor, etc., and the embodiment of the invention is not limited in particular. In addition, the heating rods are members for heating, the number and the installation positions of the heating rods can be preset, for example, the number of the heating rods can be ten, the ten heating rods are installed at the bottom of the preheating chamber 1 in parallel, the types of the heating rods can be preset, and preferably, the heating rods in the embodiment are formed by adopting exposed spiral nickel-chromium heating wires and insulating ceramic supports, and the heating rods are small in surface load, and can achieve the effects of sensitive temperature control, large heat dissipation area and small temperature lag.
Through the above heating structure setting, when high temperature resistant simulation test is carried out in the test chamber, first the relay receives the control command from the control device 10, and then the relay can carry out the operation of power connection or disconnection according to the control command. When the relay is connected with the power supply, the contacts in the alternating current contactor are closed, the power supply supplies power to the heating rod, the heating rod heats the air in the preheating chamber 1, and the heated air flows into the working chamber 2 to perform a high temperature resistance test on a sample to be tested; when the relay cuts off the power supply, the contacts in the alternating current contactor are disconnected, the power supply cannot supply power to the heating rod, and at the moment, the heating rod can stop heating. Therefore, the relay can prevent the load of the heating rod from being excessive, and the alternating current contactor can control the starting and stopping of the heating rod. In the embodiment of the invention, the heating device 5 can be used for carrying out high temperature resistance test within the range of 60-230 ℃ on the sample to be tested.
In the embodiment of the invention, the air supply device 6 consists of an air conditioning box and a centrifugal fan impeller, the centrifugal fan impeller is arranged at an air outlet of the air conditioning box, the centrifugal fan impeller is used for adjusting the uniformity of air supply of the air conditioning box, the air conditioning box and the centrifugal fan impeller are both connected with the control device 10, and the control device 10 can send working instructions to the air conditioning box and the centrifugal fan impeller simultaneously to work together, and can also send working instructions to the air conditioning box or the centrifugal fan impeller separately to work sequentially. The speed and the flow direction of output air in the air conditioning box can be changed through the centrifugal fan impeller rotating at a high speed, so that air supply is uniformly distributed in the working chamber 2, the temperature in the working chamber 2 is uniform, local supercooling or overheating in the working chamber is avoided, and the accuracy of a test sample in a simulated environment test is improved.
In the embodiment of the invention, the vibration test device 7 consists of a vibration generator, a digital switching power amplifier, a vibration controller, a sensor and a cooling fan. The cooling fan is connected with the vibration generator, the vibration generator is connected with the control device 10, the vibration generator is located below the sample carrying platform and is connected with the sample carrying platform, the output end of the digital switch power amplifier is connected with the vibration generator, the input end of the digital switch power amplifier is connected with the output end of the vibration controller, the input end of the vibration controller is connected with the sensor, and the sensor is used for collecting vibration signals of samples to be tested on the sample carrying platform. That is, when it is necessary to simulate a vibration environment, the control device 10 controls the vibration of the vibration brake generator, and then the sensor detects the vibration signal and transmits the vibration signal to the vibration controller, which in turn transmits the amplified signal to the vibration generator to thereby start the cyclic vibration operation.
Specifically, the vibration generator is a member for generating vibration to drive the sample to be tested on the sample carrying platform to vibrate; the sensor is used for collecting a vibration signal component of a sample to be tested on the sample carrying table, and can periodically collect the vibration signal or collect the vibration signal in real time; the vibration controller is a component for receiving the vibration signal acquired by the sensor and correcting and modifying the vibration signal; the digital switching power amplifier is a component for receiving the modified signal and amplifying the modified signal in multiple stages; the cooling fan is used for cooling the temperature of the vibration generator so as to ensure that heat generated by the vibration generator can be discharged in time. The parts can be preselected according to the use requirement. The vibration generator adopted in the embodiment is ET-50LS3-445 type, the controller is IMI208C type, the power amplifier is SDA-50 type and B-5000 type cooling fans.
With the above vibration structure arrangement, when a vibration resistance simulation test is performed in the test box, a control instruction is given to the vibration generator through the control device 10, and the vibration generator performs vibration or stationary operation according to the control instruction. When the vibration generator vibrates, the vibration generator drives a sample to be tested on the sample carrying table to vibrate, at the moment, the sensor can collect a vibration signal of the sample to be tested and transmit the vibration signal to the vibration controller, the vibration controller can modify the collected vibration signal and transmit the modified vibration signal to the digital switch power amplifier, and the vibration signal is retransmitted to the vibration generator after being amplified by the digital switch power amplifier, so that the vibration generator continuously generates vibration to perform a vibration-resistant simulation test on the sample to be tested; when the vibration generator is static, the sample to be tested on the sample carrying table stops vibrating, and the vibration resistance test is finished.
It is worth noting that when the vibration generator continuously vibrates, the vibration generator can generate a large amount of heat, and at the moment, the cooling air machine can convey cold air to the vibration generator so as to ensure that the heat generated by the vibration generator is timely discharged, avoid damage caused by continuous heating of the vibration generator, and prolong the service life of the test box.
In the embodiment of the invention, the ultraviolet test device 8 consists of a plurality of ultraviolet lamp tubes and a power regulator, wherein the plurality of ultraviolet lamp tubes are arranged in parallel and are arranged on the inner top wall of the working chamber 2, the input end of the power regulator is connected with the control device 10, and the output end of the power regulator is connected with the plurality of ultraviolet lamp tubes. The ultraviolet lamp tubes are used for simulating ultraviolet illumination environment of the sample to be tested, the types of the ultraviolet lamp tubes can be selected according to the use requirements, for example, the air-cooled ultraviolet lamp tubes are arranged on the inner top wall of the working chamber 2 in parallel at equal intervals, so that the illumination range and the illumination uniformity are improved; the power regulator is a member for regulating the illuminance of the ultraviolet lamp, and the specific model is not limited as long as the regulation function can be realized.
Through the above ultraviolet irradiation structure setting, when carrying out ultraviolet irradiation resistant simulation test at the test box, give control command for the power regulator through controlling means 10, the power regulator can increase or adjust the operation of little to ultraviolet lamp's radiance according to this control command. The ultraviolet lamp tube irradiates the sample to be measured according to the set irradiation illuminance, and in the embodiment, the deviation of the irradiation illuminance is less than 10%.
In the embodiment of the invention, the refrigerating device 9 consists of a compressor and an evaporation condenser, wherein the control end of the compressor is connected with the control device 10, the output end of the compressor is connected with the input end of the evaporation condenser, an oxygen-free copper pipe is adopted during connection, welding is carried out under the atmosphere of nitrogen filling protection, and the output end of the evaporation condenser is used for conveying refrigerating gas. Preferably, in the embodiment, two compression refrigerators are adopted for cascade refrigeration, and in order to enhance the refrigeration effect and shorten the refrigeration time, the invention also adopts a liquid nitrogen auxiliary cooling system to be matched with the compressors for use; the evaporation condenser adopts a sine corrugated aluminum fin tube type heat exchanger as the evaporation condenser, and the plate exchange of the sine corrugated aluminum fin tube type heat exchanger adopts polyurethane foam materials, so that the heat transfer temperature difference is small, and the heat transfer efficiency is high.
It is further preferred that the refrigerating device 9 further comprises a damper, which is mounted on the compressor. In the working process of the compressor, vibration can be generated by the compressor, deformation dislocation of a connecting pipeline between the compressor and the evaporative condenser can be possibly caused, and the vibration amplitude of the compressor can be effectively reduced after the vibration absorber is adopted, so that the pipeline deformation dislocation caused by operation vibration change can be avoided, and the reliability of the whole refrigerating device 9 can be improved.
With the above refrigeration structure, when the low temperature resistance simulation test is performed in the test box, a control command is given to the compressor through the control device 10, and the compressor can be operated to be turned on or off according to the control command. When the compressor is started, firstly, the refrigerant vapor is absorbed, after the pressure of the refrigerant vapor is increased, the refrigerant vapor enters the evaporative condenser to perform cold and heat exchange, supercooling is realized, then the supercooling gas can refrigerate the air in the precooling chamber 3, and the refrigerated air can flow into the working chamber 2 to perform a low temperature resistance test on a sample to be tested; when the compressor is turned off, the cooling of the air in the working chamber 2 is stopped. In the embodiment, the low temperature resistance test within the range of-70-20 ℃ can be carried out on the sample to be tested through the refrigerating device 9.
In the embodiment of the invention, the control device 10 consists of a control screen and a controller, wherein the communication end of the control screen is connected with the communication end of the controller, and the control screen is used for carrying out digital display and test parameter setting. The controller may be a logic controller, a micro-program controller, or the like. For example, the controller can be a PLC, and the PLC adopts a control mode of 'multi-path input and multi-path output', and controls high temperature, low temperature, ultraviolet and vibration respectively, so that free switching combination of test environments such as heating/refrigerating, ultraviolet irradiation and vibration can be realized, the universality of the test box is further improved, multiple environment simulation tests can be completed in the same test box, the test sample is prevented from moving back and forth, and the test efficiency is improved.
The control screen is used for carrying out digital display and test parameter setting. For example, the control panel may display heating data of the heating device 5, vibration data of the vibration test device 7, irradiation data of the ultraviolet test device 8, and cooling data of the cooling device 9, and may store the above data. The technician can timely acquire the data through the control screen and timely modify and set the data. Specifically, the heating data of the heating device 5 may include whether the heating device 5 is heating, the temperature of the heating device 5, and the like; the vibration data of the vibration test apparatus 7 may include whether the vibration test apparatus 7 is vibrating, the vibration frequency of the vibration test apparatus 7, and the like; the irradiation data of the ultraviolet test device 8 may include irradiation illuminance or the like of the ultraviolet test device 8; the refrigeration data of the refrigeration device 9 may include whether the refrigeration device 9 is performing refrigeration, the temperature of the refrigeration device 9, and the like.
When the multifunctional comprehensive simulation test box is used for carrying out relevant environment-resistant tests, an operator can set and adjust test parameters and program curves through clicking operation, sliding operation, voice operation, gesture operation and other operations on the control screen, then the control screen can send execution commands to the controller according to the determined test parameters and program curves, and the controller can control the corresponding heating device 5, the vibration test device 7, the ultraviolet test device 8 and the refrigerating device 9 to start working after receiving the execution commands, so that simulation of different environment factors is realized. The control device can acquire the heating data of the heating device 5, the vibration data of the vibration test device 7, the irradiation data of the ultraviolet test device 8 and the working data of the refrigeration device 9 in real time, and transmit the data to the control screen, and the control screen can display the data in a chart or curve form when displaying the data, so that the whole working process can be displayed, and a technical person can call different data in the control screen.
It is noted that the control screen displays a first warning message when the heating device 5 has a short circuit condition, a second warning message when the refrigerating device 9 has an overload or overpressure condition, and a third warning message when the air supply device 6 has an overload condition; when the control screen displays any one of the first warning information, the second warning information and the third warning information, the control screen controls the controller to cut off the connection with the heating device 5, the air supply device 6 and/or the refrigerating device 9 correspondingly.
The multifunctional comprehensive simulation test box also comprises a power supply device, wherein the power supply device supplies power for electric equipment such as a heating device 5, an air supply device 6, a vibration test device 7, an ultraviolet test device 8, a refrigerating device 9, a control device 10 and the like. The power supply device may be a three-phase five-wire device, and the working voltage may be 380v±10% of direct current voltage, wherein the control device 10 may have an independent power source to supply power to itself.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It will be understood that the invention is not limited to what has been described above and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. Vibration-resistant is experimental with multi-functional environmental simulation test case, its characterized in that, the test case adopts three box overall structure, includes: the pre-cooling device comprises a pre-cooling chamber (1), a working chamber (2), a pre-cooling chamber (3) and a control chamber (4), wherein the working chamber (2) is positioned in the middle of a test box, the pre-cooling chamber (1) and the control chamber (4) are positioned in the front of the test box in parallel, the pre-cooling chamber (3) is positioned at the rear of the test box, and the pre-cooling chamber (1) and the pre-cooling chamber (3) are respectively communicated with the working chamber (2);
wherein heating device (5) has been placed in preheating chamber (1), be provided with air supply arrangement (6), vibration test device (7) and ultraviolet test device (8) in working chamber (2), refrigerating plant (9) have been placed in precooling chamber (3), controlling means (10) have been placed in control chamber (4), just controlling means (10) are connected with heating device (5), vibration test device (7), ultraviolet test device (8) and refrigerating plant (9) respectively for at least one kind of simulated environment test among the sample to be tested heats, vibrates, ultraviolet irradiation and refrigerates in working chamber (2), simultaneously controlling means (10) are connected with air supply arrangement (6) for make temperature distribution in working chamber (2) even.
2. The multifunctional environment simulation test box for vibration resistance test according to claim 1, wherein the heating device (5) consists of a relay, an alternating current contactor and a heating rod, the alternating current contactor is positioned between the relay and the heating rod and is respectively connected with the relay and the heating rod, and a control end of the relay is connected with the control device (10).
3. The multifunctional environment simulation test box for vibration resistance test according to claim 1, wherein the air supply device (6) consists of an air conditioning box and a centrifugal fan impeller, the centrifugal fan impeller is arranged at an air outlet of the air conditioning box and is used for adjusting the uniformity of air supply of the air conditioning box, and the air conditioning box and the centrifugal fan impeller are connected with the control device (10).
4. The multifunctional environment simulation test box for vibration resistance test according to claim 1, wherein the vibration test device (7) is composed of a vibration generator, a digital switching power amplifier, a vibration control instrument, a sensor and a cooling fan, the cooling fan is connected with the vibration generator, the vibration generator is connected with the control device (10), the vibration generator is located below the sample carrying table and is connected with the sample carrying table, the output end of the digital switching power amplifier is connected with the vibration generator, the input end of the digital switching power amplifier is connected with the output end of the vibration control instrument, the input end of the vibration control instrument is connected with the sensor, and the sensor is used for collecting vibration signals of samples to be tested on the sample carrying table.
5. The multifunctional environment simulation test chamber for vibration resistance test according to claim 1, wherein the ultraviolet test device (8) is composed of a plurality of ultraviolet lamp tubes and a power regulator, the plurality of ultraviolet lamp tubes are arranged in parallel and installed on the inner top wall of the working chamber (2), the input end of the power regulator is connected with the control device (10), and the output end of the power regulator is connected with the plurality of ultraviolet lamp tubes.
6. The multifunctional environment simulation test chamber for vibration resistance test according to claim 1, wherein the refrigerating device (9) is composed of a compressor and an evaporation condenser, a control end of the compressor is connected with the control device (10), an output end of the compressor is connected with an input end of the evaporation condenser, and an output end of the evaporation condenser is used for conveying refrigerating gas.
7. The multifunctional environment simulation test box for vibration resistance test according to claim 1, wherein the control device (10) consists of a control screen and a controller, the communication end of the control screen is connected with the communication end of the controller, and the control screen is used for digital display and test parameter setting;
the control screen displays first warning information when the heating device (5) has a short circuit condition, displays second warning information when the refrigerating device (9) has an overload or overpressure condition, and displays third warning information when the air supply device (6) has an overload condition; when the control screen displays any one of the first warning information, the second warning information and the third warning information, the controller can correspondingly cut off the connection with the heating device (5), the air supply device (6) and/or the refrigerating device (9).
8. The multifunctional environmental simulation test chamber for vibration resistance test according to any one of claims 1 to 7, wherein the outer shell of the test chamber is made of cold-rolled steel sheet, the outer surface of the cold-rolled steel sheet is electrostatically sprayed, the inner wall is made of SUS304 stainless steel sheet by TIG seamless welding, and meanwhile, a heat insulation material is filled between the outer shell and the inner wall.
9. The multifunctional environment simulation test box for vibration resistance test according to claim 8, wherein a single door (21) for taking and placing a sample to be tested is arranged on the side wall of the working chamber (2), a sealing strip is arranged between the fixed side of the single door (11) and the side wall of the working chamber (2), an electric defrosting device is arranged on the movable side of the single door (11), the electric defrosting device is connected with the control device (10) and is used for removing dew or frost on the edge of the movable side of the single door (11) during refrigeration simulation environment test, and a water receiving disc is arranged below the single door (11).
10. The multifunctional environment simulation test box for vibration resistance test according to claim 8, wherein an observation window (12) for observing the state of a sample to be tested in the working chamber (2) is arranged on the single door (11), a single light shielding door is arranged outside the observation window (12), and an LED white light tube is arranged in the observation window (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310964962.8A CN116984037A (en) | 2023-08-02 | 2023-08-02 | Vibration-resistant multifunctional environment simulation test box for test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310964962.8A CN116984037A (en) | 2023-08-02 | 2023-08-02 | Vibration-resistant multifunctional environment simulation test box for test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116984037A true CN116984037A (en) | 2023-11-03 |
Family
ID=88522860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310964962.8A Pending CN116984037A (en) | 2023-08-02 | 2023-08-02 | Vibration-resistant multifunctional environment simulation test box for test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116984037A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117968995A (en) * | 2024-01-10 | 2024-05-03 | 无锡超捷汽车连接技术有限公司 | Load vibration test device for automobile fastener |
-
2023
- 2023-08-02 CN CN202310964962.8A patent/CN116984037A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117968995A (en) * | 2024-01-10 | 2024-05-03 | 无锡超捷汽车连接技术有限公司 | Load vibration test device for automobile fastener |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116984037A (en) | Vibration-resistant multifunctional environment simulation test box for test | |
| CN203090942U (en) | Cold/thermal shock test box | |
| CN102974406A (en) | Constant temperature humidity chamber | |
| CN204925079U (en) | Temperature humidity vibration combined stress screening case | |
| CN207280893U (en) | Thermal shock test chamber | |
| CN102194364B (en) | Teaching training table for alternating-current variable-frequency multi-unit air conditioning unit | |
| CN102184672B (en) | Digital vortex multi-connected air conditioner refrigerating system teaching training station | |
| CN204595125U (en) | A kind of energy-saving dynamic test burn-in chamber | |
| CN215540963U (en) | Constant temperature and humidity test box | |
| CN204903328U (en) | Portable temperature collision test case of hanging flower basket | |
| CN209901320U (en) | Integrated ultra-low temperature high-temperature test box | |
| CN207704679U (en) | A kind of New-energy electric vehicle air-conditioning teaching experiment platform | |
| CN2766232Y (en) | Integrated air-conditioner testing room structure | |
| CN207319516U (en) | A kind of Refrigeration ＆ Air-Conditioning experimental real-training platform for teaching experiment real training | |
| CN106128274A (en) | A kind of separate type air conditioner skills practice training device | |
| CN203490893U (en) | Refrigeration training device | |
| KR100510745B1 (en) | Air-conditioning laboratory equipment | |
| CN206549659U (en) | Explosion-proof type high-low temperature test chamber | |
| CN202075911U (en) | Alternating-current variable-frequency multi-connected air conditioning unit teaching training platform | |
| CN116952823B (en) | Multifunctional environment simulation test box for salt spray resistance test | |
| CN205983258U (en) | Artifical filthy laboratory temperature control device | |
| CN116930055A (en) | Multifunctional comprehensive environment test box for fatigue resistance test | |
| KR100854130B1 (en) | Testing apparatus of air conditioner | |
| CN106732834A (en) | Explosion-proof type high-low temperature test chamber | |
| CN206563702U (en) | A kind of xenon lamp aging chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |