KR20230089267A - Apparatus for testing drainage and testing drainage system using the same - Google Patents

Abstract

The present embodiments are applied to a chamber constituting an enclosed space according to a drainage test, and are applied to a spray transfer unit and a spray transfer unit that inject liquid into the chamber and at the same time partially perform reciprocating motion due to water pressure by the liquid It provides a drainage test device comprising a control unit connected to and adjusting the pressure or flow rate of the liquid provided to the injection transfer unit.

Description

Drainage test device and drainage test system including the same {Apparatus for testing drainage and testing drainage system using the same}

The present invention relates to a drainage test apparatus and a drainage test system including the same, and relates to a drainage test apparatus capable of simultaneously or independently performing a transfer test and an injection test by a transfer piston, respectively, and a drainage test system including the same.

The contents described in this part merely provide background information on the present embodiment and do not constitute prior art.

The water supply device is an indispensable device in the design of a rocket propulsion engine using a water-reactive propellant. The pattern of water injected from the nozzle of the supply device affects the combustion performance, and for this purpose, appropriate pressure, flow rate, spray angle, etc. must be confirmed and reflected in the design. In the test process of manufacturing and verifying the water supply device, injection should be tested in a state in which an environment similar to the actual combustion chamber is simulated as much as possible, and it is necessary to develop a test device for this.

In addition, since the solid fuel burns and the volume of the combustion chamber changes in addition to the injection test, the operation test of the transfer piston that pushes the fuel is also very important, and the configuration of the test device for obtaining detailed data is also required.

Conventionally, there is no torpedo (propulsion engine) using a water reaction propellant, and there is no test device and experience constituting a pressure environment around a water jet. If the device is applied to an actual combustion chamber environment without confirming the pattern of the injection device in a pressurized closed space, it may show a different tendency from the injection pattern at normal temperature and pressure. This will soon affect the combustion performance and the performance of the entire device. In addition, when water is supplied at atmospheric pressure, test results different from those in actual underwater motion may be derived.

Embodiments of the present invention can test and predict injection patterns in real situations by implementing a test device that performs an injection test and a transfer test, and the main purpose of the invention is to simulate the differential pressure environment required for the transfer of propellant (solid fuel). There is a purpose.

Other non-specified objects of the present invention may be additionally considered within the scope that can be easily inferred from the following detailed description and effects thereof.

According to one aspect of this embodiment, the present invention is a chamber constituting an enclosed space according to the drainage test; a spray transfer unit that is applied to the chamber and injects liquid into the chamber and at the same time performs a reciprocating motion at a part thereof by water pressure caused by the liquid; and a control unit that is connected to the spray transfer unit and adjusts the pressure or flow rate of the liquid supplied to the spray transfer unit.

Preferably, the spray transfer unit may include a supply pump supplying the liquid into the chamber; a piston reciprocating by being pressurized by the water pressure of the liquid generated by the supply pump; and a first conduit connected to the supply pump and providing a passage through which liquid is injected into the chamber.

Preferably, the chamber includes: a first region in which the piston is provided and through which the first conduit passes; and a second area in which the liquid is injected into the inside using the injection differential pressure of the liquid through the first conduit passing through the first area and a preset pressure is maintained, wherein the first area and the second area are maintained. The regions are characterized by being separated.

Preferably, it is fixed to a side surface of the first region separated from the second region, and further includes a damper connected to the piston to fix the piston therein, wherein the damper is connected to the piston, regardless of the displacement of the piston. Characterized in that it is implemented to simulate the set pressure.

Preferably, the piston includes a pressurized area formed by performing the reciprocating motion by being pressurized by the supply pump, and the pressurized area uses water pressure of the liquid generated by the supply pump to shear. It is characterized in that it is formed as the piston moves to the rear end as pressurized.

Preferably, the damper applies a resistance to the reciprocating motion of the piston to the piston, the resistance is linearly proportional to the transfer speed according to the reciprocating motion of the piston, and when transferring the piston at a constant pressure It is maintained at a target speed and is characterized in that it is calculated by multiplying a damping coefficient of the damper and the conveying speed.

Preferably, the damping coefficient is characterized in that it is calculated in consideration of the pressure by the supply pump, the diameter of the piston, the number of the dampers, the conveying speed, and other resistance forces.

Preferably, the storage tank is connected to the lower end of the second region through a second conduit and includes a storage tank through which the liquid injected into the second region moves, and the storage tank is connected to the control unit so that the inside of the storage tank is connected to the control unit. It is characterized in that the liquid is provided to the jet transfer unit.

Preferably, it further includes an image capture unit for capturing a spray pattern of the liquid sprayed into the second region, wherein the spray pattern occurs when a certain pressure is formed, and the pressure, flow rate, and spray angle of the sprayed liquid are formed. It is characterized in that it is confirmed by considering at least one.

Preferably, the second region is characterized in that the constant pressure is maintained by using a separate pressure container or regulator.

Preferably, the control unit includes an auxiliary pump for adjusting the pressure of the liquid flowing into the injection transfer unit; and a control valve for controlling the flow rate provided to the jet transfer unit, wherein the auxiliary pump and the control valve are formed in a third conduit connecting a water storage tank containing liquid to the jet transfer unit.

According to another embodiment of the present invention, the present invention is a chamber constituting an enclosed space according to the drainage test; a spray transfer unit that is applied to the chamber and injects liquid into the chamber and at the same time performs a reciprocating motion at a part thereof by water pressure caused by the liquid; and a drainage test device connected to the spray transfer unit and including a control unit configured to adjust the pressure or flow rate of the liquid provided to the spray transfer unit; and a control unit controlling the drainage test device according to a spray test or a transport test.

Preferably, the control unit controls the spray transfer unit or the control unit according to the spray test or transfer test, and checks the spray pattern through a pattern image obtained by photographing the liquid sprayed into the chamber through an image capture unit. And, the control unit is characterized in that the spray pattern generated in a state in which a certain pressure is formed by considering at least one of the pressure, flow rate, and spray angle of the sprayed liquid.

As described above, according to the embodiments of the present invention, the present invention sprays a water injection device through a door spray / drain device in a pressurized environment into an airtight container simulating a combustion chamber, thereby providing a spray pattern in an actual combustion situation. There is an effect that can be tested and predicted.

In addition, the present invention has an effect capable of simulating a differential pressure environment required for the transfer of a propellant (solid fuel) transfer device.

Even if the effects are not explicitly mentioned here, the effects described in the following specification expected by the technical features of the present invention and their provisional effects are treated as described in the specification of the present invention.

1 is a view showing a drainage test apparatus according to an embodiment of the present invention.
2 and 3 are views showing in detail a drainage test apparatus according to an embodiment of the present invention.
4 is an exemplary view showing a transfer test through a drainage test apparatus according to an embodiment of the present invention.
5 is an exemplary diagram illustrating a spray test through a drainage test apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention, and methods for achieving them, will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms, only the present embodiments make the disclosure of the present invention complete, and the common knowledge in the art to which the present invention belongs It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used in a meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention, and singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Terms including ordinal numbers such as second and first may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a second element may be termed a first element, and similarly, a first element may be termed a second element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

The present invention relates to a driving device and a driving system including the same.

The water supply system is an indispensable device in the design of rocket propulsion systems using water-reactive propellants. The pattern of water injected from the nozzle of the supply device affects the combustion performance, and for this purpose, appropriate pressure, flow rate, injection angle, etc. can be confirmed and reflected in the design.

The drainage test apparatus 10 may perform a transfer test and an injection test according to injection in a state in which an environment as close as possible to an actual combustion chamber is simulated during a test process for manufacturing and verifying a water supply device.

The drainage test device 10 may be implemented as a device for testing a rocket engine using a water-reactive propellant that reacts with water and burns, but is not necessarily limited thereto.

1 is a view showing a drainage test apparatus according to an embodiment of the present invention.

Referring to FIG. 1 , the drainage test apparatus 10 includes a chamber 100, a spray transfer unit 200 and a control unit 300. The drainage test apparatus 10 may omit some of the various components exemplarily shown in FIG. 1 or may additionally include other components.

The chamber 100 may constitute an enclosed space according to the drainage test.

The chamber 100 includes a first area 110 and a second area 120 .

The first region 110 has a piston 220 therein, and a first conduit 230 may pass therethrough.

In the second area 120 , the liquid is injected into the second area 120 through the first conduit 230 passing through the first area 110 using the injection differential pressure of the liquid, and a preset pressure may be maintained.

A constant pressure inside the second region 120 may be maintained using a separate pressurized container or a regulator.

The first region 110 and the second region 120 may be separated from each other.

The spray transfer unit 200 is applied to the chamber 100, and at the same time injects liquid into the chamber 100, a portion thereof may perform a reciprocating motion due to water pressure caused by the liquid.

The injection transfer unit 200 includes a supply pump 210 , a piston 220 and a first pipe 230 .

The supply pump 210 may supply liquid into the chamber 100 .

The piston 220 may perform reciprocating motion by being pressurized by water pressure of the liquid generated by the supply pump 210 .

The piston 220 may include a pressurized area formed by being pressurized by the supply pump 210 and performing a reciprocating motion. Here, the pressure region may be formed as the piston 220 moves to the rear end as the front end is pressurized using the water pressure of the liquid generated by the supply pump 210 .

The first conduit 230 is connected to the supply pump 210 and may provide a passage through which liquid is injected into the chamber 100 .

The control unit 300 is connected to the jet transfer unit 200 and can adjust the pressure or flow rate of the liquid provided to the jet transfer unit 200 .

The control unit 300 includes an auxiliary pump 310 and a control valve 320 .

The auxiliary pump 310 may adjust the pressure of the liquid flowing into the spray transfer unit 200 .

The control valve 320 may adjust the flow rate provided to the supply pump 210 .

The auxiliary pump 310 and the control valve 320 may be formed in the third conduit 330 connecting the water storage tank 500 containing the liquid and the spray transfer unit 200 .

The drainage test apparatus 10 may further include a damper 400 .

The damper 400 is fixed to a side surface of the first area 110 separated from the second area 120, and is connected to the piston 220 to fix the piston 220 therein.

The damper 400 may be implemented to simulate a preset pressure regardless of the displacement of the piston 220 .

The damper 400 may apply resistance to the reciprocating motion of the piston 230 to the piston 230 .

The resistance force is linearly proportional to the transfer speed according to the reciprocating motion of the piston 230, and is maintained at the target speed when the piston 230 is transferred at a constant pressure, and the damping coefficient of the damper 400 and It can be calculated as a product of the feed rate.

The damping coefficient may be calculated by considering the pressure of the supply pump 210, the diameter of the piston 220, the number of dampers 400, the transfer speed, and other resistance forces.

The drainage test apparatus 10 may further include a water storage tank 500 .

The water storage tank 500 is connected to the lower end of the second area through the second conduit 510, and the liquid injected into the second area 120 can move.

The water storage tank 500 may be connected to the control unit 300 to provide liquid therein to the spray transfer unit 200 .

The drainage test apparatus 10 may further include an image capturing unit 600 .

The image capturing unit 600 may capture a spray pattern of liquid sprayed onto the second area 120 .

The spray pattern is generated in a state where a certain pressure is formed, and can be confirmed by considering at least one of the pressure, flow rate, and spray angle of the liquid to be sprayed.

According to one embodiment of the present invention, the drainage test system includes a drainage test device 10 and a control unit (not shown).

The control unit may control the drainage test device 10 according to the injection test or the transfer test.

The control unit controls the spray transfer unit 200 or the control unit 300 according to the spray test or the transfer test, and the liquid sprayed into the chamber 100 is photographed through the image capture unit 600 and sprayed through a pattern image obtained. You can check the pattern.

The control unit may check a spray pattern generated in a state in which a certain pressure is formed by considering at least one of the pressure, flow rate, and spray angle of the liquid to be sprayed.

2 and 3 are views showing in detail a drainage test apparatus according to an embodiment of the present invention.

According to one embodiment of the present invention, the drainage test device 10 may be used for a rocket propulsion engine using a water reaction propellant, a seawater intake rocket combustion device, a seawater intake type torpedo, and the like, but is not necessarily limited thereto.

When a motor (for example, a rocket engine) to be tested is driven, when water is injected as a propellant by an injector, the injected water and the propellant may react and burn. At this time, the rocket is propelled using the combustion pressure, and since the propellant disappears as much as it burns, the propellant can be pushed toward the combustion chamber, and the piston is pressed to transfer the propellant.

The drainage test device 10 is a test device for testing the above-described rocket engine, and confirms that the piston 220 is normally transported by pressurizing it, and a damper 400 is placed on the piston 220 to simulate the combustion pressure of the combustion chamber. By installing it, the resistance to the piston 220 can be simulated. In addition, it can be observed with a patterner to check the pattern of the liquid injected into the combustion chamber.

The drainage test apparatus 10 may introduce water into the chamber 100 through the supply pump 210 . Here, since the water flowing into the supply pump 210 operates underwater in the case of an actual torpedo, it may be introduced in a state in which dynamic pressure due to the speed of the torpedo and external pressure due to the depth of the water act. Accordingly, the drainage test device 10 may introduce pressurized water into the supply pump 210 at a certain level.

The drainage test device 10 may be capable of simulating a differential pressure environment required for transport of a propellant (solid fuel) transport device.

2 and 3, in the chamber 100, the first space 110 and the second space 120 are separated, and the piston 220 The transfer test according to and the injection test according to the liquid injected through the first conduit 230 may be performed simultaneously or independently.

According to one embodiment of the present invention, the liquid injected into the chamber 100 through the first conduit 230 may be water, but is not necessarily limited thereto.

By injecting the injection transfer unit 200 into the chamber 100 representing an airtight container simulating a combustion chamber, it is possible to test and predict an injection pattern in a combustion situation.

The injection transfer unit 200 may pressurize the front end of the piston 220 by using the water pressure generated by the supply pump 210 to push the piston 220 toward the rear portion. Here, the piston 220 may be applied with a resistance to transfer using the damper 400 .

The resistance force applied to the piston 220 by the damper 400 may be provided to simulate the pressure of high-pressure combustion gas generated when fuel is burned in an actual combustion chamber.

The damper 400 may simulate a constant pressure regardless of displacement using a hydraulic damper, but is not necessarily limited thereto. Here, the hydraulic damper refers to a device that damps vibration or alleviates shock by using viscous resistance or turbulence resistance of a fluid.

The first conduit 230 injects water, and similarly, a pressurized environment using pneumatic pressure may be simulated in order to check an injection pattern in a state in which combustion pressure is formed. Specifically, the second space 120 in which water is injected through the first conduit 230 is simulated as a pressurized environment using pneumatic pressure.

According to one embodiment of the present invention, the first conduit 230 may form a spraying part so that the liquid is sprayed from a portion located in the second space 120 . In addition, the first conduit 230 is connected to the piston 220 so that the liquid passing through the first conduit 230 flows into the pressurized area of the piston 220 and the piston 220 reciprocates due to the water pressure of the liquid. exercise can be performed. Here, the liquid flowing into the pressurized area of the piston 220 may be introduced through the first conduit 230 or may be introduced through a separate conduit connected to the first conduit 230, but is not necessarily limited thereto. .

According to one embodiment of the present invention, the second space 120 can be pressurized using a regulator, a nitrogen cylinder, or a pressurizing device, but is not necessarily limited thereto. A nitrogen bomb represents a high-pressure container into which nitrogen gas is compressed as high-pressure gas, a pressurization device represents a device for applying gas pressure, and a regulator may represent a device for setting and adjusting air pressure.

For example, the second space 120 may be implemented as a pneumatic tank, but is not necessarily limited thereto. A pneumatic tank can compress air above a certain pressure to represent a stored space.

The supply pump 210 may be equipped with a prototype or implemented as another pump to spray water. For example, the supply pump 210 may be implemented as a turbo pump, but is not necessarily limited thereto. Here, the turbo pump represents a pump that operates by converting kinetic energy into pressure energy by rotation of an impeller, and can be used to supply fuel to a rocket engine.

An auxiliary pump 310 is installed in front of the supply pump 210 to form a pressure for simulating dynamic pressure in water, which is an environment in which the water-reactive propellant is actually operated.

The auxiliary pump 310 is installed to assist the supply pump 210, which is the main pump, and may perform an auxiliary role before supplying the liquid contained in the water storage tank 500 to the supply pump 210.

An auxiliary pump 310 and a control valve 320 may be applied to the third conduit 330 .

The auxiliary pump 310 may adjust the water pressure of the liquid flowing into the supply pump 210 .

A flow meter 304 and a pressure gauge 302 may be further applied to the third conduit 330 to check the flow rate and pressure of the moving liquid, but is not necessarily limited thereto.

The drainage test apparatus 10 may simulate the liquid supplied into the chamber 100 by the supply pump 210 similarly to an actual underwater movement situation.

Therefore, the drain test device 10 is a device for spraying/draining liquid in a pressurized environment.

4 is an exemplary view showing a transfer test through a drainage test apparatus according to an embodiment of the present invention.

The drainage test apparatus 10 may perform a transfer test by applying the spray transfer unit 200 to the chamber 100 . At this time, the piston 220 of the injection transfer unit 200 is connected to the damper 400 used for simulating the combustion pressure, so that a transfer test can be performed.

Referring to FIG. 4 , the drainage test apparatus 10 supplies liquid into the chamber 100 and drives the piston 220 at the same time to perform the transfer test, and thus the piston 220 through the damper 400 Resistance can be simulated.

The damper 400 is provided in the first space 110, and specifically, it may be fixed and provided on the side where the first space 110 and the second space 120 are separated.

The damper 400 may fix the piston 220 to be positioned in the first space 110 . At this time, the piston 220 is connected through the supply pump 210 and the first conduit 230, it can be pressurized using the supply pump (210).

According to one embodiment of the present invention, the damper 400 may be adjustable or replaceable according to a test device for simulated combustion chamber pressure. Specifically, the damper 400 is used to simulate combustion pressure, and may be used to select the damper 400 through Equation 1 below.

Resistance according to the damper 400 may be defined as a product of a damping coefficient and a transport speed. Since the resistance force by the damper 400 is linearly proportional to the conveying speed, when the piston 220 is conveyed at a constant pressure, it can be maintained at a desired speed. The damping coefficient can be calculated through Equation 1.

In Equation 1, P represents the pressure by the supply pump 210, D represents the diameter of the piston 220, C represents the damping coefficient of the damper 400, n represents the number of dampers 400 Indicates, v represents the transfer speed of the piston 220, f represents the other resistance.

In the drainage test apparatus 10, the damper 400 may be selected using Equation 1 described above, or simulation pressure of the combustion chamber may be considered when designing.

The drainage test device 10 may check the pressure of the pressurized area according to the transport speed of the piston 220 and the movement of the piston 220 .

The auxiliary pump 310 is formed in the third passage 330 for delivering liquid to the supply pump 210 and can adjust the pressure introduced into the supply pump 210 .

5 is an exemplary diagram illustrating a spray test through a drainage test apparatus according to an embodiment of the present invention.

During the spray test, which is the same as the transfer test, a spray pattern of liquid sprayed through the first conduit 230 of the spray transfer unit 200 may be observed.

Specifically, the inside of the chamber 100 may be pressurized using an air compressor. At this time, the air compressor may maintain a constant pressure with a pressurized container and a regulator, but is not necessarily limited thereto.

The injection transfer unit 200 may inject the liquid into the airtight chamber 100 by using the injection differential pressure. Here, the injection differential pressure represents the difference between the pressure set in the engine supply system and the pressure in the combustion chamber, and can be adjusted by adjusting the flow rate.

The drainage test apparatus 10 further includes an image capturing unit 600, and a spray pattern of the liquid may be checked through the image capturing unit 600. For example, the drainage test apparatus 10 may check a spray pattern of a liquid spray image captured through the image capturing unit 600 using a patterner, but is not necessarily limited thereto.

The liquid injected into the chamber 100 may return to the storage tank 500 through the second conduit 510 connected from the lower end of the chamber 100 . Specifically, the drainage test device 10 is a liquid injected through the spray transfer unit 200 through the third conduit 330 connecting the lower end of the second space 120 of the chamber 100 and the water storage tank 500. may be transferred back to the water storage tank 500.

Specifically, the water storage tank 500 is connected to the spray transfer unit 200 through the third conduit 330 and connected to the chamber 100 through the second conduit 510, so that the liquid can be circulated and used.

The third conduit 330 includes an auxiliary pump 310 and a control valve 320 . The auxiliary pump 310 can control the pressure of the liquid flowing into the supply pump 210 , and the control valve 320 can control the flow rate of the liquid flowing into the supply pump 210 .

Therefore, the drainage test device 10 can simulate an underwater test, and can control 0, pressurization, and flow rate with a valve.

The above description is merely an example of the technical idea of the present invention, and those skilled in the art can make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . The protection scope of the present invention should be construed according to the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: drainage test device
100: chamber
110: first space 1
120: second space
200: injection transfer unit
210: feed pump
220: piston
230: first pipeline
300: control unit
310: auxiliary pump
320: control valve
400: damper
500: water tank
600: video recording unit

Claims (13)

A chamber constituting an enclosed space according to the drainage test;
a spray transfer unit that is applied to the chamber and injects liquid into the chamber and at the same time performs a reciprocating motion at a part thereof by water pressure caused by the liquid; and
Drainage test apparatus including a control unit connected to the jet transfer unit and adjusting the pressure or flow rate of the liquid provided to the jet transfer unit. According to claim 1,
The injection transfer unit,
a supply pump supplying the liquid into the chamber;
a piston reciprocating by being pressurized by the water pressure of the liquid generated by the supply pump; and
Drain test apparatus including a first conduit connected to the supply pump and providing a passage for injecting liquid into the chamber. According to claim 2,
the chamber,
a first region in which the piston is provided and through which the first conduit passes; and
A second region in which the liquid is injected into the inside using the injection differential pressure of the liquid through the first conduit passing through the first region and a predetermined pressure is maintained,
Drainage test apparatus, characterized in that the first area and the second area are separated. According to claim 3,
A damper fixed to a side surface of the first region separated from the second region and connected to the piston to fix the piston therein;
The damper is a drain test apparatus, characterized in that implemented to simulate a preset pressure regardless of the displacement of the piston. According to claim 4,
the piston,
A pressurized area formed by being pressurized by the supply pump to perform the reciprocating motion;
The pressure area is formed as the piston moves to the rear end by pressing the front end using the water pressure of the liquid generated by the supply pump. According to claim 4,
The damper is
Applying resistance to the reciprocating motion of the piston to the piston;
The resistance force is linearly proportional to the transfer speed according to the reciprocating motion of the piston, and is maintained at a target speed when the piston is transferred at a constant pressure, and the product of the damping coefficient of the damper and the transfer speed Drainage test apparatus, characterized in that calculated as. According to claim 6,
The attenuation coefficient is,
Drainage test apparatus, characterized in that calculated considering the pressure by the supply pump, the diameter of the piston, the number of the dampers, the transfer speed and other resistance forces. According to claim 3,
Further comprising a storage tank connected to the lower end of the second region through a second conduit and moving the liquid injected into the second region;
The driving device, characterized in that the storage tank is connected to the control unit to provide the liquid therein to the spray transfer unit. According to claim 3,
Further comprising an image capture unit for capturing a spray pattern of the liquid sprayed on the second area,
The spray pattern occurs in a state where a certain pressure is formed, and the drainage test device, characterized in that confirmed by considering at least one of the pressure, flow rate and spray angle of the sprayed liquid. According to claim 9,
The second region,
Drainage test apparatus, characterized in that the constant pressure is maintained using a separate pressurized container or regulator. According to claim 1,
The controller,
an auxiliary pump for regulating the pressure of the liquid introduced into the injection transfer unit; and
Including a control valve for adjusting the flow rate provided to the injection transfer unit,
The auxiliary pump and the control valve are formed in a third conduit connecting a water storage tank having a liquid and the injection transfer unit. A chamber constituting an enclosed space according to the drainage test; a spray transfer unit that is applied to the chamber and injects liquid into the chamber and at the same time performs a reciprocating motion at a part thereof by water pressure caused by the liquid; and a drainage test device connected to the spray transfer unit and including a control unit configured to adjust the pressure or flow rate of the liquid provided to the spray transfer unit; and
Drainage test system including a control unit for controlling the drain test device according to a spray test or a transfer test. According to claim 12,
The control unit,
According to the spray test or the transfer test, the spray transfer unit or the control unit is controlled, and the spray pattern is confirmed through a pattern image obtained by photographing the liquid sprayed into the chamber through an image capturing unit,
The control unit checks the spray pattern generated in a state in which a certain pressure is formed by considering at least one of the pressure, flow rate, and spray angle of the sprayed liquid.

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