KR102138326B1 - Complex environment testing system - Google Patents

Abstract

The composite environmental test system according to the present invention is a chamber equipped with a test object therein, a storage tank connected to the chamber and storing a low-temperature source, a source through heat exchange with a source transferred from the storage tank between the chamber and the storage tank Including a sound providing unit for inducing a phase change of and providing an acoustic environment inside the chamber and a temperature control fluid supply for controlling the source delivered from the storage tank between the chamber and the storage tank to reach a set temperature and supplying it into the chamber , When testing the environment for the test object, the acoustic environment, the thermal environment, and the vibration environment test can be performed in combination at the same time. Therefore, the composite environment test system can simulate a complex environment more similar to the real environment.

Description

Complex environmental test system {COMPLEX ENVIRONMENT TESTING SYSTEM}

In an environmental test for a test object, a composite environmental test system is disclosed that can simultaneously perform acoustic, thermal, and vibration environmental tests.

In general, when there is a possibility that the development target will be affected by the changing surrounding environment, tests to verify the test subject under conditions similar to the actual conditions are performed to predict and prepare.

For example, in the process of burning fuel to move a vehicle, such as a satellite, a missile, or a projectile, noise is generated by the engine, and as the vehicle flies, heat is generated around the vehicle due to friction with the air. In addition, according to this, the vehicle is excited by sound caused by noise.

As described above, various environmental tests are performed in the development stage in order to predict the effect of the environment in which the vehicle can be placed and to verify the vehicle to be used in the above environment.

Conventional environmental testing facilities verify acoustics by performing acoustic tests, vibration tests, and thermal environmental tests, respectively.

However, in the case of a real environment in which a vehicle is placed, since acoustic, vibration, and thermal environments work simultaneously in a complex manner, it can be said that the results of the conventional independent environmental test methods are less reliable.

On the other hand, as a related technology, there is Korean Patent Registration No. 10-0644351 “Thermoacoustic Simulation Device” filed in Korea on November 14, 2005.

The purpose of the composite environment test system according to an embodiment is to simultaneously provide an acoustic environment and a thermal environment to a test body, and additionally provide a vibration environment to simulate a complex environment more similar to a real environment.

In addition, the purpose of the composite environmental test system according to an embodiment is to provide an environment in which no moisture or icing occurs due to a temperature difference when applying a thermal environment using nitrogen gas without moisture.

In addition, the purpose of the composite environmental test system according to an embodiment is to provide an acoustic environment, a thermal environment, and a vibration environment at the same time, thereby saving time and space required rather than performing tests independently applied to each environment. .

In addition, the purpose of the composite environmental test system according to an embodiment is to provide a variety of environments through various combinations of acoustic, heat, and vibration to be provided.

The problems to be solved in the embodiments are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The composite environmental test system according to an embodiment for achieving the above object stores a chamber provided with a test object therein, a storage tank connected to the chamber and stores a source of low temperature, and is located between the chamber and the storage tank, and An acoustic providing unit that provides an acoustic environment inside the chamber after causing a phase change of the source through heat exchange with a source transferred from a storage tank, and is located between the chamber and the storage tank and is transmitted from the storage tank It may include a temperature control fluid supply to adjust the source to reach a set temperature to supply the interior of the chamber.

In addition, the composite environmental test system according to an embodiment may be further installed in the chamber and further include an acoustic transmission structure surrounding the test body, the acoustic transmission structure being connected to the temperature control fluid supply and the temperature control fluid supply It serves as a boundary between the source supplied from and the gas inside the chamber, and at the same time, it is possible to transmit the sound supplied from the sound providing unit, so that an acoustic environment and a thermal environment can be simultaneously applied to the test body.

In addition, the temperature-controlled fluid supply unit of the composite environmental test system according to an embodiment heats a source to generate steam, and vaporizes the source delivered from the storage tank through heat exchange with steam delivered from the steam generator. A first vaporizer, and a temperature controller connected to the first vaporizer and finely adjusting the vaporized source in the first vaporizer to reach a set temperature.

In addition, the temperature controller of the composite environment test system according to an embodiment includes a heater that increases the temperature of the vaporized source in the first vaporizer, a cooler that reduces the temperature of the vaporized source in the first vaporizer, and the first vaporizer And it may include a direction controller for adjusting the direction of the source flowing to the heater or the cooler between the heater or the first vaporizer and the cooler.

In addition, the acoustic providing unit of the composite environmental test system according to an embodiment is connected to the steam generator to perform heat exchange with the steam delivered from the steam generator, thereby vaporizing the source delivered from the storage tank It may include a two-carburetor, and an acoustic vibrator that converts the vaporized source into sound and supplies it into the chamber.

Further, the source of the composite environmental testing system according to one embodiment may be provided as liquid nitrogen.

In addition, the composite environmental test system according to an embodiment may further include a vibration generator that transmits vibration to a test body provided in the chamber, and accordingly, a vibration environment may also be applied to a test body to which acoustic and thermal environments are simultaneously applied. have.

In addition, the acoustic transmission structure of the composite environmental test system according to an embodiment may have one end thereof communicating with the outside of the chamber to discharge fluid to the outside.

According to the composite environment test system according to an embodiment, an acoustic environment and a thermal environment are simultaneously provided to a test body, and an additional vibration environment is also provided to simulate a complex environment more similar to a real environment.

In addition, according to the composite environment test system according to an embodiment, it is effective to prevent occurrence of moisture or icing due to a temperature difference when applying a thermal environment using nitrogen gas without moisture.

In addition, according to the composite environment test system according to an embodiment, it provides an acoustic environment, a thermal environment, and a vibration environment at the same time, so that it takes less time and space required than performing tests independently applied to each environment. There is.

In addition, according to the composite environmental test system according to an embodiment, sound, heat, and vibration to be provided are adjustable, and thus there is an effect of realizing various environments through various combinations.

The effects of the composite environmental test system according to an embodiment are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

The following drawings attached to the present specification illustrate one preferred embodiment of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention. It should not be interpreted as limited.
1 is a schematic diagram of a complex environmental testing system according to an embodiment;
Figure 2 shows how a thermal environmental test is performed in a composite environmental testing system according to an embodiment;
3 shows a state in which a thermal environment and an acoustic environment test are performed simultaneously in a composite environmental test system according to an embodiment;
4 is a schematic diagram of a composite environmental test system according to another embodiment, which shows a state in which a thermal environment, an acoustic environment, and a vibration environment test are simultaneously performed in the composite environment test system.

Hereinafter, embodiments will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible, even if they are displayed on different drawings. In addition, in describing the embodiments, when it is determined that detailed descriptions of related well-known configurations or functions interfere with understanding of the embodiments, detailed descriptions thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), and the like can be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected to or connected to the other component, but another component between each component It should be understood that may be "connected", "coupled" or "connected".

Components included in any one embodiment and components including common functions will be described using the same name in other embodiments. Unless there is an objection to the contrary, the description described in any one embodiment may be applied to other embodiments, and a detailed description will be omitted in the overlapped range.

1 is a schematic diagram of a complex environmental testing system 10 according to one embodiment.

As shown in FIG. 1, the composite environmental test system 10 according to an embodiment includes a chamber 100, a storage tank 200, a temperature control fluid supply unit 300, an acoustic providing unit 400, and an acoustic transmission structure It may include 500.

The chamber 100 may be provided with a test object T at any position inside, and is connected to the temperature control fluid supply unit 300 and the sound providing unit 400.

In addition, the chamber 100 may be formed of, for example, a rectangular parallelepiped structure, and at least one hole for communicating with the temperature control fluid supply unit 300 and the sound providing unit 400 may be provided on one side. It is not limited.

The storage tank 200 is a sealed tank that stores a low temperature source therein, and may be connected to the chamber 100.

In addition, the storage tank 200 is connected to the sound providing unit 400 to supply the low temperature source stored therein to the sound providing unit 400 and the temperature control fluid supply unit 300, respectively, and the temperature control fluid supply unit ( 300), respectively. At this time, the flow rate of the source supplied to each can be adjusted.

The low-temperature source stored in the storage tank 200 may be a material that is converted into sound by volume change of the source through a series of phase change processes and converted into a heat medium by a temperature control process.

For example, the cold source can be liquid nitrogen. In addition, liquid nitrogen may be present inside the storage tank 200 at a temperature of -200°C.

The temperature control fluid supply unit 300 is located between the chamber 100 and the storage tank 200. The temperature control fluid supply unit 300 serves to vaporize the low temperature source supplied from the storage tank 200 and supply it into the chamber 100.

Specifically, the temperature control fluid supply unit 300 may include a steam generator 310, a first vaporizer 320, and a temperature controller 330, and vaporize a low temperature source through such components. .

In addition, the temperature controller 330 may include a heater 331, a cooler 332, and a direction controller 333, and may heat or cool the source vaporized by such components.

The sound providing unit 400 is located between the chamber 100 and the storage tank 200. The sound providing unit 400 serves to convert a low-temperature source supplied from the storage tank 200 into sound and provide it into the chamber 100.

Specifically, the sound providing unit 400 may include a second vaporizer 410, a heat exchanger 420, and an acoustic vibrator 430, and vaporize the low-temperature source by such components and sound Can be converted to

In particular, the acoustic vibrator 430 may be configured as a device using gas ejection. For example, the acoustic vibrator 430 discharges the vaporized nitrogen gas through the slit, and may generate noise while passing through a nozzle having a shape having an increased cross-sectional area.

That is, the nitrogen gas can be converted into high energy sound by the acoustic exciter 430 and provide an acoustic environment to the chamber.

The acoustic transmission structure 500 is located inside the chamber 100 and may be in a form surrounding the test object T.

In addition, the acoustic transmission structure 500 may communicate with the temperature control fluid supply unit 300.

Therefore, the acoustic transmission structure 500 may serve as a boundary for preventing the fluid supplied into the acoustic transmission structure 500 by the temperature control fluid supply unit 300 from flowing into the chamber 100. Accordingly, the fluid supplied into the acoustic transmission structure 500 by the temperature control fluid supply unit 300 can effectively form a thermal environment on the test object T.

On the other hand, the sound transmitting structure 500 may pass the sound provided from the sound providing unit 400 into the chamber 100.

For example, the acoustic transmission structure 500 may be made of a material that is capable of transmitting sound while blocking fluid inflow or heat transfer inside the chamber.

2 shows a state in which a thermal environmental test is performed in the composite environmental test system 10 according to an embodiment.

Referring to FIG. 2, a process of implementing a thermal environment on the test body T through the temperature control fluid supply unit 300 will be described.

The temperature control fluid supply unit 300 is located between the chamber 100 and the storage tank 200.

The temperature control fluid supply unit 300 may include a steam generator 310, a first vaporizer 320, and a temperature controller 330.

Specifically, the steam generator 310 in the temperature control fluid supply unit 300 functions as, for example, a boiler, and may generate high temperature steam. This high temperature steam may be delivered to the first vaporizer 320. In addition, a low-temperature source of the storage tank 200 may also be delivered to the first vaporizer 320. The source of the low temperature in the first vaporizer 320 may be in heat exchange with the high temperature steam delivered from the steam generator 310. The source can then reach the temperature set in the first vaporizer 320.

That is, the low-temperature source transferred from the storage tank 200 passes through the first vaporizer 320 and phase change may be performed. For example, nitrogen in a low-temperature liquid state in the storage tank 200 may be vaporized into gaseous nitrogen after passing through the first vaporizer 320.

In addition, by adjusting the heat exchange time in the first vaporizer 320 or the area through which the cold source passes, the source can reach a set temperature.

In addition, the source can reach the set temperature by passing through the temperature controller 330.

More specifically, the temperature controller 330 in the temperature control fluid supply unit 300 may include a heater 331, a cooler 332, and a direction controller 333.

As described above, the source vaporized by passing through the first vaporizer flows into the heater 331 or the cooler 332 depending on the test conditions to be performed. Through this, it can be heated or cooled to finely adjust to reach a set temperature or to further heat or cool.

In addition, the direction regulator 333 is located between the first vaporizer 320 and the heater 331 and between the first vaporizer 320 and the cooler 332. For example, the direction adjuster 333 may be in the form of a valve to adjust the direction of the source flowing into the heater 331 or the cooler 332.

In order to implement a high temperature thermal environment around the test object T, first, the source is vaporized by passing through the first vaporizer 320 in the temperature control fluid supply unit 300. The vaporized source flows into the heater 331 through a channel opened by the direction controller 333 according to the set temperature. It can then be further heated by heater 331 to adjust the temperature of the source to reach the set temperature.

Conversely, in order to implement a low temperature thermal environment around the specimen T, the source is first vaporized by passing through the first vaporizer 320 in the temperature control fluid supply unit 300. The vaporized source flows into the cooler 332 through a channel opened by the direction controller 333 according to the set temperature. It can then be further cooled in cooler 332 to adjust the temperature of the source to reach the set temperature.

Referring to FIG. 2, the temperature controller 330 in the temperature control fluid supply unit 300 may further include a flow regulator 334.

The flow regulator 334 may be located between the chamber 100 and the heater 331 and between the chamber 100 and the cooler 332.

The flow regulator 334 may adjust the flow rate supplied to the acoustic transmission structure 500 before the source passing through the heater 331 or the cooler 332 is supplied to the acoustic transmission structure 500.

Finally, the source that has passed through the flow regulator 334 is supplied into the acoustic transmission structure 500. The test object T is located inside the acoustic transmission structure 500.

Therefore, through the above-described process, the temperature control fluid supply unit 300 may provide a thermal environment according to the set temperature to the test body T.

3 shows a state in which a thermal environment test and an acoustic environment test are simultaneously performed in the composite environmental test system 10 according to an embodiment.

However, the process of implementing the thermal environment is the same as described above with reference to FIG. 2, and will be omitted below for the sake of simplicity.

Referring to FIG. 3, a process of implementing an acoustic environment on the test object T through the acoustic providing unit 400 will be described. The sound providing unit 400 is located between the chamber 100 and the storage tank 200.

The sound providing unit 400 may include a second vaporizer 410, a heat exchanger 420, and an acoustic vibrator 430.

Specifically, the sound providing unit 400 shares the temperature control fluid supply unit 300 and the steam generator 310, and the steam generator 310 may generate high temperature steam. The hot steam may be delivered to the second vaporizer 410 of the acoustic providing unit 400. In addition, a low temperature source from the storage tank 200 can also be delivered to the second vaporizer 410. The low-temperature source transmitted as described above may be heat-exchanged with high-temperature steam in the second vaporizer 410 and the heat exchanger 420 of the sound providing unit 400.

That is, the low-temperature source transferred from the storage tank 200 passes through the second vaporizer 410 and phase change may be performed. For example, nitrogen in a low-temperature liquid state in the storage tank 200 may be vaporized into gaseous nitrogen after passing through the second vaporizer 410.

After passing through the second vaporizer 410, the source may be converted into sound by the sound exciter 430.

For example, the acoustic vibrator 430 may be configured as a device that generates high energy noise while nitrogen gas passes through a nozzle having an increased cross-sectional area.

As described above, the vaporized source may be converted into sound by the sound vibrator 430 and provided to the chamber 100. At this time, vibration by the sound may be generated according to the size of the sound generated.

Therefore, the sound providing unit 400 may provide an acoustic environment inside the chamber through the above-described process.

As described above, the acoustic transmission structure 500 may be installed at any position inside the chamber 100, and may be in a form surrounding the test object T at an arbitrary distance from the test object T.

One end of the acoustic transmission structure 500 communicates with the temperature control fluid supply unit 300, which may be a passage through which a temperature controlled source is supplied from the temperature control fluid supply unit 300.

The other end of the acoustic transmission structure 500 passes through the chamber 100 to communicate with the outside of the chamber 100, which is a temperature controlled source supplied from the temperature control fluid supply unit 300 flows and is discharged to the outside It can be a passage.

The acoustic transmission structure 500 may serve as a boundary that allows the source supplied from the temperature control fluid supply unit 300 to be separated from the fluid inside the chamber 100. Accordingly, a temperature difference may occur between the fluid inside the chamber 100 and the source supplied from the temperature-controlled fluid supply unit 300.

In addition, regardless of the size of the chamber 100, a thermal environment can be created in the vicinity of the test object T according to a range between the test object T and the acoustic transmission structure 500.

The sound transmitting structure 500 may be made of a material having a function of heat insulation. At this time, the material may pass sound.

As a result, the sound transmission structure 500 can transmit the sound supplied from the sound providing unit 400 into the chamber 100, so that the sound can be transmitted to the test object T accordingly.

Accordingly, the composite environment test system 10 according to an embodiment may simultaneously apply the thermal environment provided by the temperature control fluid supply unit 300 and the acoustic environment provided by the sound provider 400 to the test object T. .

In addition, the composite environmental test system 10 according to an embodiment may simultaneously provide an acoustic environment and a thermal environment, thereby saving time and space required for testing rather than performing tests independently applied to each environment. have.

In addition, when the source supplied into the chamber 100 to provide an acoustic environment and a thermal environment is nitrogen gas, since the nitrogen gas does not contain moisture, an acoustic environment and a thermal environment are provided around the acoustic transmission structure 500. It can prevent the occurrence of moisture or icing due to the temperature difference of each source.

Hereinafter, a complex environmental test system 20 according to another embodiment will be described with reference to FIG. 4.

4 is a schematic diagram of a composite environmental test system according to another embodiment.

In addition, FIG. 4 shows a state in which a thermal environment, an acoustic environment, and a vibration environment test are simultaneously performed in the composite environment test system 20 according to another embodiment.

Since the composite environmental test system 20 according to the present embodiment includes components performing the same or similar functions to the components of the composite environmental test system 10 according to the above-described embodiment, the same or similar Components performing a function or a role will be described using the same reference numerals.

Therefore, hereinafter, the differences between the composite environment test system 20 according to the present embodiment and the composite environment test system 10 according to the above-described embodiment will be mainly described.

As shown in FIG. 4, the composite environmental test system 20 according to another embodiment includes a chamber 100, a storage tank 200, a temperature control fluid supply unit 300, an acoustic providing unit 400, and an acoustic transmission structure It may include 500.

However, the description of the chamber 100, the storage tank 200, the temperature control fluid supply unit 300, the sound providing unit 400, and the sound transmitting structure 500 will be omitted for simplicity.

4, the composite environmental test system 20 according to another embodiment may further include a vibration generator 600.

The vibration generator 600 may apply vibration to the test body T inside the chamber 100 through a vibration interface and a coupling structure connected to the test body T.

In addition, the vibration generator 600 is located outside the chamber 100, and the vibration interface and the coupling structure are connected to the vibration generator 600.

The vibration interface and the coupling structure may be in a form connected to the lower portion of the test body T through the chamber 100 and the acoustic transmission structure 500 from the vibration generator.

Accordingly, the composite environment test system 20 according to another embodiment additionally vibrates the test environment T to which the thermal environment provided by the temperature control fluid supply unit 300 and the acoustic environment provided by the acoustic supply unit 400 are simultaneously applied. It can also be applied simultaneously.

That is, the composite environment test system 20 according to another embodiment may test the specimen T in a composite environment more similar to the real environment.

In addition, the composite environmental test system 20 according to another embodiment provides an acoustic environment, a thermal environment, and a vibration environment at the same time, so that it takes time and space required for testing rather than performing tests independently applied to each environment. Can save.

In addition, the composite environmental test system 20 according to another embodiment can finely adjust the degree of sound, heat, and vibration to be provided, so that various combinations can be produced, and accordingly, test objects under various implemented environmental conditions ( T) can be tested.

As described above, in the embodiment of the present invention, specific matters such as specific components and the like have been described by the limited embodiment and the drawings, but this is provided only to help the overall understanding of the present invention. It is not limited, and those skilled in the art to which the present invention pertains can make various modifications and variations from these descriptions. For example, the described techniques may be performed in a different order than the described method, and/or components such as the structure, device, etc. described may be combined or combined in a different form from the described method, or may be applied to other components or equivalents. Even if replaced or substituted by, appropriate results can be achieved. Accordingly, the spirit of the present invention should not be limited to the described embodiments, and should not be determined, and all claims that are equivalent to or equivalent to the claims, as well as the claims to be described later, belong to the scope of the spirit of the present invention. .

10: complex environmental testing system
100: chamber
200: storage tank
300: temperature control fluid supply
310: steam generator
320: first vaporizer
330: temperature controller
331: heater
332: cooler
333: direction controller
334: flow regulator
400: sound provider
410: second vaporizer
420: heat exchanger
430: sound exciter
500: acoustic transmission structure
600: vibration generator

Claims (9)

A chamber in which a test body is provided;
A storage tank connected to the chamber and storing a cold source;
An acoustic providing unit for inducing a phase change of the source through heat exchange with a source transferred from the storage tank between the chamber and the storage tank, and providing an acoustic environment inside the chamber; And
A temperature-controlled fluid supply unit between the chamber and the storage tank, adjusting a source delivered from the storage tank to reach a set temperature and supplying it into the chamber; It includes,
A composite environmental test system that enables a composite environmental test by simultaneously applying an acoustic environment and a thermal environment to a test body by the acoustic providing unit and the temperature-controlled fluid supply unit.
According to claim 1,
It is installed inside the chamber, further comprising an acoustic transmission structure surrounding the test body,
The acoustic transmission structure is connected to the temperature control fluid supply unit, and serves as a boundary between the source supplied from the temperature control fluid supply unit and the gas inside the chamber, and is capable of transmitting sound supplied from the sound supply unit in a complex environment Test system.
According to claim 1,
The temperature control fluid supply unit,
A steam generator that heats the source to generate steam;
A first vaporizer that vaporizes a source transferred from the storage tank through heat exchange with steam transferred from the steam generator; And
A temperature controller connected to the first vaporizer and finely adjusting the temperature of the source vaporized in the first vaporizer; Composite environmental test system comprising a.
According to claim 3,
The temperature controller,
A heater that increases the temperature of the vaporized source in the first vaporizer;
A cooler that reduces the temperature of the vaporized source in the first vaporizer; And
A direction adjuster for adjusting a supply direction of a source flowing to the heater or the cooler between the first vaporizer and the heater or the first vaporizer and the cooler; Including a complex environmental test system to fine-tune the temperature of the vaporized source to reach a set temperature.
According to claim 3,
The sound providing unit,
A heat exchanger connected to the steam generator and performing heat exchange with steam delivered from the steam generator;
Thus, a second vaporizer for vaporizing the source delivered from the storage tank; And
An acoustic vibrator that converts a vaporized source into sound and supplies it into the chamber; Composite environmental test system comprising a.
According to claim 1,
The source is a complex environmental testing system using liquid nitrogen.
According to claim 1,
Further comprising a vibration generator for transmitting vibration to the test body provided in the chamber,
The vibration generator is a composite environment test system that enables a composite environment test by additionally applying a vibration environment to a test body to which acoustic and thermal environments are simultaneously applied.
According to claim 2,
One end of the acoustic transmission structure is connected to the outside of the chamber, a composite environmental test system capable of discharging fluid to the outside.
According to claim 4,
A composite environmental test system further comprising a flow regulator disposed between the temperature control fluid supply and the chamber, and configured to control a flow rate of fluid from the temperature control fluid supply.

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