KR102803608B1 - Shock Tube Apparatus and System having the same and Method for operating automated Shock Tube - Google Patents

Abstract

The present invention relates to a shock wave tube device, a material property experiment system including the same, and an automated shock wave tube operation method. One embodiment of the present invention provides a shock wave tube device including: a shock wave tube in which a plurality of tubes having circular or polygonal cross sections are connected and a shock wave is generated due to a pressure difference between the plurality of tubes; and a driving unit that moves at least one of the plurality of tubes using air pressure to separate and connect the plurality of tubes.

Description

Shock tube apparatus, material property test system including same, and method for operating automated shock tube {Shock Tube Apparatus and System having the same and Method for operating automated Shock Tube}

The present invention relates to a shock wave tube device, a material property experiment system including the same, and an automated shock wave tube operation method.

In order to develop a hypersonic vehicle, a full-scale flight experiment is required, but it costs a lot of money to manufacture a full-scale vehicle and conduct experiments during the development process. Accordingly, impulse test equipment that can simulate the high-altitude environment, including the aerodynamic phenomena of the hypersonic range, has been used in the past for vehicle development.

In order to evaluate the properties of a material, a method of applying a shock wave to the target of the property evaluation is being applied, and a shock wave tube device that generates a shock wave by rupturing a diaphragm using the pressure difference between a low-pressure tube and a high-pressure tube is being developed.

However, the conventional wind wave tube device has the problem of wasting manpower and time by manually connecting the low-pressure tube and the high-pressure tube with a diaphragm in between and then conducting the characteristic experiment.

Korean Patent Publication No. 10-0935658

The technical problem to be solved by the present invention is to provide a shock tube device capable of operating by automating the separation and connection of a shock tube for a material property experiment, a material property experiment system including the same, and an automated shock tube operation method.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

In order to achieve the above technical task, one embodiment of the present invention provides a shock wave tube device including a shock wave tube in which a plurality of tubes having circular or polygonal cross sections are connected and which generates a shock wave due to a pressure difference between the plurality of tubes; and a driving unit that moves at least one of the plurality of tubes pneumatically to separate and connect the plurality of tubes.

In an embodiment of the present invention, the shock wave tube includes a first tube and a second tube extending in a uniaxial direction, and a diaphragm disposed between the first tube and the second tube, and the driving unit connects the first tube and the second tube and can move at least one of the first tube and the second tube.

In an embodiment of the present invention, the driving unit may include: a first plate coupled to one end of the first pipe; a second plate coupled to one end of the second pipe and positioned facing the first plate; and at least one pneumatic device coupled to the first plate and the second plate and moving at least one of the first plate and the second plate using pneumatic pressure.

In an embodiment of the present invention, the pneumatic device may include a cylinder coupled to the first plate and arranged parallel to the first pipe; and a piston rod extending from the cylinder and coupled to the second plate.

In an embodiment of the present invention, the shock wave tube device may further include a movement assistance unit that supports the driving unit and assists movement of at least one of the first plate and the second plate.

In an embodiment of the present invention, the movement assistance unit may include a plurality of linear rails extending parallel to the first pipe; a linear shaft extending parallel to the first pipe and arranged on the linear rail; a cylinder bracket coupled to the first plate and/or the pneumatic device; a bracket support plate extending horizontally and arranged above the linear shaft and coupled to a lower portion of the cylinder bracket; and a linear block coupled to a lower portion of the bracket support plate to support the bracket support plate and slide along the linear shaft on the linear shaft.

In an embodiment of the present invention, the moving assistance unit may further include a support coupled to the bracket support plate to support the first tube.

In an embodiment of the present invention, the moving assistance unit may further include a guard plate coupled to the second pipe and/or the second plate and in close contact with one end of the linear shaft to prevent detachment of the linear block.

In order to achieve the above technical task, another embodiment of the present invention provides a material property experiment system including a shock wave tube device; at least one pressure sensor installed in the shock wave tube and detecting and/or measuring pressure generated in the first tube and/or the second tube to generate pressure data; a holder providing a mounting space for the shock wave tube device; and a control device controlling the operation of a driving unit.

In an embodiment of the present invention, the stand may include a frame designed and/or assembled to provide a mounting space for the shock wave tube device and/or the control device.

In an embodiment of the present invention, the control device may include a data analysis unit that collects and analyzes pressure data generated by the pressure sensor and generates control data for controlling the driving unit; and a driving control unit that controls the operation of the driving unit based on the control data.

In order to achieve the above technical problem, another embodiment of the present invention provides a shock tube automation operation method of a material property experiment system, which comprises a shock tube device, at least one pressure sensor installed in the shock tube and detecting and/or measuring pressure generated in the first tube and/or the second tube to generate pressure data, a holder providing a mounting space for the shock tube device, and a control device controlling the operation of a driving unit, the method comprising: (A) a step of supplying high-pressure gas into the shock tube; (B) a step of increasing the pressure inside the first tube to rupture a diaphragm; (C) a step of controlling the driving unit by the control device to separate (separate) the first tube and the second tube of the shock tube; and (D) a step of controlling the driving unit by the control device to close the first tube and the second tube of the shock tube when the diaphragm is loaded (inserted) between the first tube and the second tube.

In the embodiment of the present invention, in the above (C), the control device may analyze the collected pressure data to generate control data for controlling the driving unit, and may determine rupture of the diaphragm by comparing and/or analyzing the pressure data generated before and after the shock wave occurs, and may generate control data for operating the driving unit to replace the ruptured diaphragm after the shock wave occurs in the shock wave tube.

According to an embodiment of the present invention, the separation and connection of a shock tube for material property experiments can be automated and operated.

In addition, according to an embodiment of the present invention, waste of manpower and time for replacing a ruptured diaphragm can be reduced.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

Figure 1 is a drawing showing the configuration of a shock wave tube device according to one embodiment of the present invention.
FIG. 2 is a drawing exemplarily showing the configuration of a material characteristic experiment system according to one embodiment of the present invention.
FIGS. 3 and 4 are drawings showing the structure of a shock wave tube according to one embodiment of the present invention.
Figure 5 is a flowchart showing a material characteristic experiment method according to one embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention can be implemented in various different forms, and therefore is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are assigned similar drawing reference numerals throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, joined)" to another part, this includes not only cases where it is "directly connected" but also cases where it is "indirectly connected" with another member in between. Also, when a part is said to "include" a certain component, this does not mean that other components are excluded, unless otherwise specifically stated, but that other components can be included.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. As used herein, the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood to not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the attached drawings.

FIG. 1 and FIG. 2 are drawings showing the configuration of a material characteristic experiment system according to one embodiment of the present invention, FIG. 3 is a drawing showing the configuration of a shock tube device according to one embodiment of the present invention, FIG. 4 is an enlarged drawing of “S” in FIG. 3, FIGS. 5 to 7 are drawings showing the external appearance of a shock tube device according to one embodiment of the present invention, and FIG. 8 is a drawing showing the configuration of a control device according to one embodiment of the present invention.

Referring to FIGS. 1 to 8, a material characteristic test system (10) according to one embodiment of the present invention may include a shock wave tube device (100), a pressure sensor (200), a stand (300), and a control device (400).

Specifically, the shock wave tube device (100) may include a shock wave tube (110) that generates shock waves due to a pressure difference between the plurality of tubes (101, 102), in which a plurality of tubes (101, 102) having a circular or polygonal cross-section are connected, and a driving unit (120) that moves at least one of the plurality of tubes (101, 102) pneumatically to separate and join the plurality of tubes (101, 102).

Here, the shock wave tube (110) may be formed and/or configured in a one-way long straight line shape so as to measure the impact of shock waves generated by the flight of a high-speed aircraft, such as a missile or a supersonic fighter, on the exterior of the high-speed aircraft. In this regard, the shock wave tube (110) may include a first tube (101) and a second tube (102) extending in a uniaxial direction, and a diaphragm (103) arranged between the first tube (101) and the second tube (102).

The above first pipe (101) is a high-pressure pipe and is placed on one side of the shock wave pipe (110) and can be connected to the second pipe (102) through the driving unit (120).

The above second tube (102) is a low-pressure tube and is placed on the other side of the shock wave tube (110) and can be connected to the first tube (101) through the driving unit (120).

The diaphragm (103) may be arranged between the first tube (101) and the second tube (102) to partition the internal space of the shock wave tube (110), and may be formed of a material having lower rigidity than the shock wave tube (110). For example, the diaphragm (103) may be formed of a polyethylene material. In addition, when the diaphragm (103) is ruptured by an external force (external pressure), it may generate a shock wave that travels to one side of the shock wave tube (110). For example, when the gas supplied to the first tube (101) is compressed, a high pressure is gradually generated inside the first tube (101), and the diaphragm (103) connected to the first tube (101) may be ruptured when the internal pressure of the first tube (101) exceeds a critical point.

The above driving unit (120) connects the first pipe (101) and the second pipe (102) and can move at least one of the first pipe (101) and the second pipe (102). In this regard, the driving unit (120) can include a first plate (121) coupled to one end of the first pipe (101), a second plate (122) coupled to one end of the second pipe (102) and positioned facing the first plate (121), and at least one pneumatic device (130) coupled to the first plate (121) and the second plate (122) and using pneumatic pressure to move at least one of the first plate (121) and the second plate (122).

The above first plate (121) is arranged vertically, and the set position (center portion) can be joined to one end of the first pipe (101).

The second plate (122) is arranged vertically, and the set position (center portion) can be joined to one end of the second pipe (102). At this time, the second plate (122) is formed in a shape corresponding to the first plate (121), and can be arranged facing the first plate (121).

The above pneumatic device (130) may include a cylinder (131) coupled to the first plate (121) and arranged parallel to the first pipe (101), and a piston rod (132) extending from the cylinder (131) and coupled to the second plate (122).

Here, the cylinder (131) accommodates the piston rod (132) inside, and can move the piston rod (132) in a uniaxial direction using the supplied air. At this time, the cylinder (131) can operate in a single-acting or double-acting manner, and can move the piston rod (132) forward or backward by applying air pressure to the piston rod (132).

The piston rod (132) moves uniaxially by air inside the cylinder (131) so that the length exposed to the outside is adjusted, and the gap between the first plate (121) and the second plate (122) can be adjusted by adjusting the length. For example, the piston rod (132) can be extended by the length exposed to the outside of the cylinder (131) by air supplied to the cylinder (131), thereby separating the first plate (121) from the second plate (122). In addition, the piston rod (132) can be reduced by the length exposed to the outside of the cylinder (131), thereby bringing the first plate (121) into close contact with the second plate (122).

These pneumatic devices (130) may be used in multiple numbers to smoothly move the first plate (121) and the second plate (122). That is, the plurality of pneumatic devices (130) may be composed of first to nth pneumatic devices (where n is a natural number of 2 or greater) and may be coupled to the first plate (121) and the second plate (122) in a set arrangement form.

Meanwhile, the shock wave tube device (100) may further include a movement assistance unit (140) that supports the driving unit (120) and assists the movement of at least one of the first plate (121) and the second plate (122).

The above-described movement assistance unit (140) may include a plurality of linear rails (141) extending parallel to the first pipe (101), a linear shaft (142) extending parallel to the first pipe (101) and arranged on the linear rail (141), a cylinder bracket (143) coupled to the first plate (121) and/or the pneumatic device (130), a bracket support plate (144) extending horizontally and arranged on the upper side of the linear shaft (142) and coupled to the lower portion of the cylinder bracket (143), and a linear block (145) coupled to the lower portion of the bracket support plate (144) to support the bracket support plate (144) and slide along the linear shaft (142) on the linear shaft (142).

In addition, the moving assistance unit (140) may further include a support (146) that is coupled to the bracket support plate (144) to support the first pipe.

In addition, the moving assistance unit (140) may further include a guard plate (147) coupled to the second pipe (102) and/or the second plate (122) and in close contact with one end of the linear shaft (142) to prevent detachment of the linear block (145).

As described above, the shock wave tube (110) can generate a shock wave of up to about Mach 2 by compressing the gas (gas) supplied to the first tube (101) at high pressure and rupturing the diaphragm (103). At this time, the shock wave tube (110) can generate a shock wave of a higher Mach value by pressurizing the gas at a higher pressure or using helium gas that is further compressed as the gas (driver gas).

The pressure sensor (200) may be installed in at least one of the shock wave tubes (110) to detect and/or measure pressure generated in the first tube (101) and/or the second tube (102) to generate pressure data. Here, the pressure sensor (200) may provide the detected and/or measured pressure data to the data analysis unit (410).

The above-mentioned stand (300) can provide a mounting space for the shock wave tube device (100). In this regard, the stand (300) can include a frame (310) designed and/or assembled to provide a mounting space for the shock wave tube device (100) and/or the control device (400).

The above control device (400) can control the operation of the driving unit (120). In this regard, the control device (400) can include a data analysis unit (410) and a driving control unit (420).

The data analysis unit (410) can collect pressure data generated from the pressure sensor (200). In addition, the data analysis unit (410) can analyze the collected pressure data to generate control data for controlling the driving unit (120). For example, the data analysis unit (410) can compare and/or analyze pressure data generated before and after the occurrence of a shock wave to determine rupture of the diaphragm (103).

Here, the data analysis unit (410) can generate control data to prepare the shock wave tube (110) for re-experiment after a shock wave is generated in the shock wave tube (110). That is, the data analysis unit (410) can generate control data to operate the driving unit (120) to replace the ruptured diaphragm (103).

The above drive control unit (420) can receive the control data from the data analysis unit (410) and control the operation of the pneumatic device (130). Here, the drive control unit (420) can move the piston rod (132) of the pneumatic device (130) forward or backward at a set time and/or speed based on the control data. Through this, the drive control unit (420) can separate (separate) or bring the first tube (101) and the second tube (102) apart or close (connect) to replace a ruptured diaphragm after a shock wave is generated in the shock wave tube (110).

Below, an automated shock wave tube operation method performed by a material characteristic experiment system according to one embodiment of the present invention is described.

Figure 9 is a flow chart showing an automated shock tube operation method according to one embodiment of the present invention. The automated shock tube operation method according to one embodiment of the present invention can be performed in the material characteristic experiment system according to one embodiment of the present invention described above.

Referring to FIG. 9, the method may include a step of supplying high-pressure gas into the shock tube (S110), a step of increasing the pressure inside the first tube to rupture the diaphragm (S120), a step of controlling a driving unit in a control device to separate (isolate) the first tube and the second tube of the shock tube (S130), and a step of controlling a driving unit in a control device to close (connect) the first tube and the second tube of the shock tube when a diaphragm is loaded (inserted) between the first tube and the second tube (S140).

First, in step S110, high-pressure gas can be supplied to the first pipe using a pressurizing device connected to the first pipe.

Next, in step S120, the pressure inside the first tube can be increased by supplying gas to rupture the diaphragm. At this time, a shock wave can be generated in the shock wave tube due to the rupture of the diaphragm. In addition, a pressure sensor installed in the shock wave tube can detect and/or measure the pressure generated in the shock wave tube. Here, the pressure sensor can provide the detected and/or measured pressure data to the data analysis unit.

Next, in step S130, the control device may analyze the pressure data collected to generate control data for controlling the driving unit (120). At this time, the control device may compare and/or analyze the pressure data generated before and after the shock wave occurs to determine whether the diaphragm is ruptured.

Here, the control device can generate control data to prepare the shock tube for re-experiment after a shock wave is generated in the shock tube. That is, the control device can generate control data to operate the driving unit to replace the ruptured diaphragm.

In addition, the control device can control the operation of the driving unit based on the control data. Here, the control device can advance or reverse the piston rod of the driving unit at a set time and/or speed according to the control data. Through this, the control device can separate (separate) the first tube and the second tube to replace the ruptured diaphragm after the shock wave is generated in the shock wave tube.

Next, in step S140, after the diaphragm is loaded (inserted) between the first tube and the second tube, the control device can control the operation of the driving unit to tightly connect the first tube and the second tube.

Through the above process, the separation and connection of the first and second tubes for replacement of the diaphragm can be automated.

According to an embodiment of the present invention, the separation and connection of a shock tube for material property experiments can be automated and operated.

In addition, according to an embodiment of the present invention, waste of manpower and time for replacing a ruptured diaphragm can be reduced.

The above description of the present invention is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential characteristics of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single component may be implemented in a distributed manner, and likewise, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the claims described below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

10: Material Characteristics Experiment System
100: Shockwave tube device
110: Shockwave tube
120: Drive Unit
130: Pneumatic device
140: Mobility Aid
200: Pressure sensor
300: Stand
400: Control unit

Claims (13)

A shock wave tube device of a material characteristic experiment system that operates by automating the separation and connection of shock wave tubes, comprising a shock wave tube in which a plurality of tubes having circular or polygonal cross sections are connected and which generates a shock wave due to a pressure difference between the plurality of tubes, and a driving unit that moves at least one of the plurality of tubes pneumatically for separation and connection between the plurality of tubes,
The above shock wave tube,
It comprises a first tube and a second tube extending in a uniaxial direction, and a diaphragm arranged between the first tube and the second tube,
The above driving part,
It is characterized by connecting the first pipe and the second pipe and moving at least one of the first pipe and the second pipe,
The above diaphragm,
The internal space of the shock wave tube can be partitioned, and is formed of a polyethylene material having lower rigidity than the shock wave tube, so that a high pressure is gradually generated inside the first tube by the compression of the gas supplied to the first tube, and when the internal pressure of the first tube exceeds a critical point, it is connected to the first tube and ruptured.
When ruptured by external force (external pressure), a shock wave is generated that travels to one side of the shock wave tube.
The above shock wave tube,
A shock wave tube device characterized in that when the gas supplied to the first tube is compressed at high pressure and the diaphragm is ruptured, a shock wave of up to Mach 2 is generated, and when the shock wave tube pressurizes the gas at a higher pressure or uses helium gas that is further compressed as the gas (driver gas), a shock wave of a higher Mach value is generated .
delete In the first paragraph,
The above driving part,
A first plate coupled to one end of the first pipe;
A second plate coupled to one end of the second pipe and positioned facing the first plate;
At least one pneumatic device coupled to the first plate and the second plate and moving at least one of the first plate and the second plate using pneumatic pressure;
A shock wave tube device, characterized by including a .
In the third paragraph,
The above pneumatic device,
A cylinder coupled to the first plate and arranged parallel to the first tube; and
A piston rod extending from the cylinder and coupled to the second plate;
characterized by including,
The above cylinder,
It includes a cylinder that accommodates the piston rod inside, moves the piston rod in a uniaxial direction using supplied air, and operates in a single-acting or double-acting manner, and applies air pressure to the piston rod to move the piston rod forward or backward.
The above piston rod,
The length of the cylinder is adjusted by moving uniaxially by air inside the cylinder and exposed to the outside, and the gap between the first plate and the second plate is adjusted by adjusting the length.
characterized in that the length exposed to the outside of the cylinder is reduced to bring the first plate into close contact with the second plate,
The above pneumatic device,
A shock wave tube device characterized in that a plurality of the pneumatic devices are used to smoothly move the first plate and the second plate, and the plurality of the pneumatic devices are composed of first to nth pneumatic devices and are coupled to the first plate and the second plate in a set arrangement form .
In the third paragraph,
The above shock wave tube device,
A movement assistance unit that supports the driving unit and assists movement of at least one of the first plate and the second plate;
A shock wave tube device, characterized by further comprising:
In paragraph 5,
The above moving assistance part is,
A plurality of linear rails extending parallel to the first tube;
A linear shaft extending parallel to the first tube and arranged on the linear rail;
A cylinder bracket coupled to the first plate and/or the pneumatic device;
A bracket support plate extending horizontally and positioned on the upper side of the linear shaft and coupled to the lower part of the cylinder bracket; and
A linear block coupled to the lower portion of the bracket support plate to support the bracket support plate and slide along the linear shaft on the linear shaft;
A shock wave tube device, characterized by including a.
In Article 6,
The above moving assistance part is,
A support coupled to the above bracket support plate to support the first pipe;
A shock wave tube device, characterized by further comprising:
In Article 6,
The above moving assistance part is,
A guard plate coupled to the second pipe and/or the second plate and in close contact with one end of the linear shaft to prevent detachment of the linear block;
A shock wave tube device, characterized by further comprising:
A shock wave tube device according to any one of claims 1, 3 to 8 ;
A pressure sensor, at least one of which is installed in the shock wave tube and detects and/or measures pressure generated in the first tube and/or the second tube to generate pressure data;
A stand providing a space for mounting the shock wave tube device; and
A control device that controls the operation of a driving unit;
A material property test system including:
In Article 9,
The above stand is,
A material property test system, characterized in that it includes a frame designed and/or assembled to provide a mounting space for the shock wave tube device and/or the control device.
In Article 9,
The above control device,
A data analysis unit that collects and analyzes pressure data generated from the pressure sensor and generates control data for controlling the driving unit; and
A driving control unit that controls the operation of the driving unit based on the above control data;
Including
The above driving control unit,
A material property experiment system characterized in that the piston rod of the pneumatic device is advanced or reversed based on the above control data at a set time and speed, thereby separating (separating) or bringing the first tube and the second tube into close contact (connection) in order to replace the ruptured diaphragm after a shock wave is generated in the shock wave tube .
A shock wave tube automation operation method of a material property experiment system, comprising a shock wave tube device according to any one of claims 1, 3 to 8 , a pressure sensor installed in the shock wave tube at least one of which detects and measures pressures generated in the first and second tubes to generate pressure data, a holder providing a space for mounting the shock wave tube device, and a control device controlling the operation of a driving unit,
(A) a step of supplying high pressure gas into the inside of the shock wave tube;
(B) a step of increasing the pressure inside the first tube to rupture the diaphragm;
(C) a step of controlling the driving unit in the control device to separate (separate) the first and second tubes of the shock wave tube; and
(D) When a diaphragm is loaded (inserted) between the first and second tubes, a step of controlling a driving unit in a control device to bring the first and second tubes of the shock wave tube into close contact;
Including
The above (B) is,
A shock wave tube automation operation method characterized in that the pressure inside the first tube is increased by supplying gas to rupture the diaphragm, a shock wave is generated in the shock wave tube by the rupture of the diaphragm, a pressure sensor installed in the shock wave tube detects and measures the pressure generated in the shock wave tube, and the pressure sensor provides the detected and measured pressure data to a data analysis unit .
In Article 12,
In the above (C),
The above control device analyzes the collected pressure data to generate control data for controlling the driving unit, and compares and analyzes the pressure data generated before and after the occurrence of the shock wave to determine whether the diaphragm is ruptured.
It is characterized by generating control data for operating a driving unit to replace a ruptured diaphragm after a shock wave is generated in a shock wave tube.
In the above (D),
A shock wave tube automation operation method characterized in that after the diaphragm is loaded (inserted) between the first tube and the second tube, the control device controls the operation of the driving unit to tightly connect the first tube and the second tube, thereby automating the separation (separation) and tight connection (connection) of the first tube and the second tube for replacement of the diaphragm.

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