KR101923422B1 - Suppling apparatus for ultra high pressure water for crack test of engine block - Google Patents

Suppling apparatus for ultra high pressure water for crack test of engine block Download PDF

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Publication number
KR101923422B1
KR101923422B1 KR1020150154268A KR20150154268A KR101923422B1 KR 101923422 B1 KR101923422 B1 KR 101923422B1 KR 1020150154268 A KR1020150154268 A KR 1020150154268A KR 20150154268 A KR20150154268 A KR 20150154268A KR 101923422 B1 KR101923422 B1 KR 101923422B1
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South Korea
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pressure
water
pressure water
ultra
air
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KR1020150154268A
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Korean (ko)
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KR20170052160A (en
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김윤진
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김윤진
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/16—Filtration; Moisture separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G01M3/3209—Details, e.g. container closure devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
    • G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel

Abstract

The present invention relates to an apparatus for inspecting cracks in an engine block. More particularly, the present invention relates to an apparatus for inspecting cracks in an engine block. More particularly, the present invention relates to an apparatus for inspecting cracks in an engine block, Pressure water supply device for inspecting an engine block crack by inspecting whether or not an engine block is cracked by injecting the high-pressure water into an engine block by discharging the high-pressure water.
A feature of the present invention is to provide an ultra high-pressure water supply device for inspecting the presence or absence of a crack in an engine block by injecting water at a predetermined position of the engine block, Pressure water cylinder tank, wherein the ultra-high-pressure water cylinder tank has a long cylindrical shape up and down, injects water into the upper portion, injects high-pressure air, and injects ultra-high pressure water into the engine block Pressure water to drain the ultra high-pressure water, and a pressure gauge for measuring the internal pressure of the upper part and a safety valve for lowering the pressure inside the ultra-high-pressure water cylinder tank when abnormal high pressure is formed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an ultra high pressure water supply apparatus for an engine block crack,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for inspecting cracks in an engine block, and more particularly, to an apparatus for inspecting cracks in an engine block, Pressure water supply device for inspecting an engine block crack by inspecting whether or not an engine block is cracked by injecting high-pressure water into an engine block.

Generally, the engine is used as a power generating device in various fields such as automobiles, shelves, aircraft, and railroad. Such an engine generates power by combustion of the fuel and must form a predetermined combustion space for combustion of the fuel.

Most of the combustion space is formed inside the engine block of the metal material and is manufactured to withstand the tremendous pressure in the combustion process. Most of the engines using gasoline, diesel, gas, etc. are burned in the cylinder, and the engine itself has a high temperature environment due to combustion during the combustion process, so that the engine is cooled.

It has been a long time since we started to produce these engines, and the engine manufacturing technology has become quite advanced, so that the engine is not just a combustion process, but also has a configuration capable of various complex operations and sensing. In addition, the durability is also considerable, enabling the engine to be used over a long period of time, which can last for decades. In the operation of the engine for such a long period of time, the impact force or the high temperature state generated during the combustion process of the engine is a factor that prevents the engine from being used for a long time.

Particularly, if minute cracks (cracks) are generated in the engine block, it may cause the engine to be inoperable due to the increase in the impact force of the combustion and the high cracking. Therefore, it is an important factor to find the cracks generated in the engine block early during the process of manufacturing the engine block.

However, the cracks may be located somewhere in a plurality of water flow circuits in the engine block, and there is a problem that such cracks are limited only by the conventional simple sonic detection. Therefore, a more effective crack inspection technique is required.

Open Patent No. 10-2015-0061907 (published on June 05, 2015) Open Patent No. 10-2002-0022046 (published on Mar. 23, 2002) Registered Patent No. 10-0391428 (issued on July 12, 2003) Registered Patent No. 10-1478711 (announced on December 26, 2014)

In order to solve such a problem, the present invention uses an ultra high-pressure water for inspecting a crack generated in an engine block for an engine having a long service life, so that cracks generated in the engine block as well as outside the engine block So that it can be effectively inspected.

Another object of the present invention is to provide high pressure water in an ultra-high pressure water cylinder tank in order to supply high pressure water of high pressure to the engine block, and to have a thick outer wall so that the ultra high pressure water cylinder tank body can withstand high pressure.

It is still another object of the present invention to provide a high-pressure environment by filling high-pressure water into the ultra-high-pressure water cylinder tank first to fill the water to a certain level.

Still another object of the present invention is to make it possible to easily check the water level and to check the state of the pressure.

According to an aspect of the present invention, there is provided an ultra high-pressure water supply device for inspecting the presence or absence of a crack in an engine block by injecting water at a predetermined position of the engine block, Pressure water cylinder tank for supplying ultrahigh-pressure water for supplying water of a very high pressure, wherein the ultra-high-pressure water cylinder tank has a vertically long cylindrical shape, water is injected into the upper portion, high pressure air is injected, And a safety valve for lowering the internal pressure of the ultra-high pressure water cylinder tank when an abnormal high pressure is formed is connected to the pressure gauge for measuring the internal pressure of the upper portion of the super high pressure water tank. Pressure water supply device for an engine block crack.

In a preferred embodiment of the present invention, the ultra-high-pressure water cylinder tank has a vertically long cylindrical shape, water is injected into the upper portion, high-pressure air is injected, Pressure water is discharged to the upper portion of the tank, a pressure gauge for measuring the internal pressure of the upper portion and a safety valve for lowering the pressure inside the ultra-high-pressure water cylinder tank when abnormal high pressure is formed are connected, Shell body; A lower cap covering the bottom of the shell body and containing water therein together with the shell body; And a water inlet blind flange for blocking the upper part of the shell body and for blocking the outside and the inside together with the shell body and the lower cap, wherein the water inlet blind flange is provided with a water inlet connection part to which a water inlet line is connected so that water is introduced; A high-pressure air inlet connection part in which a high-pressure air inlet line is connected to introduce high-pressure compressed air; a safety valve connection part in which a safety valve that reduces the pressure by discharging internal air when a high- And a gauge connection unit to which a pressure gauge is connected. A high-pressure water outlet connection unit is connected to one side of the shell body to connect a high-pressure water outlet line through which high-pressure water is discharged, and is installed inside the ultra- A level sensor for sensing the level of the injected water; An internal pressure sensor for measuring a pressure inside the ultra high pressure water cylinder tank; And a device controller for sending a control signal for sending an operation signal of the air compression pump when water is present at a predetermined level in the ultra high pressure water cylinder tank and a predetermined pressure or less and for stopping the operation of the air compression pump when the pressure is equal to or higher than a predetermined pressure; And the water level of the water supplied into the ultra high pressure water cylinder tank is located above the high pressure water outlet connection part.

In a preferred embodiment of the present invention, an air compression pump for compressing air to supply high-pressure compressed air into the ultra-high-pressure water cylinder tank; An air compression tank in which high-pressure compressed air compressed by the air compression pump is stored; An air filter for removing impurities from air introduced into the air compression pump; And an air filter for sensing the flow of air flowing through the air filter to the air compression pump side.

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According to the present invention configured as described above, cracks generated in the engine block as well as outside the engine block are effectively cracked by using ultra-high-pressure water for inspecting cracks generated in the engine block for engines having a long service life .

Another advantage of the present invention is that, in order to supply the high pressure water of high pressure to the engine block, the high pressure water is formed in the ultra high pressure water cylinder tank, and the high pressure water cylinder tank body is thickly provided so as to withstand the high pressure, It can be used in the environment.

Further, another effect of the present invention is that a high-pressure environment is formed by filling high-pressure water into the ultra-high-pressure water cylinder tank first to fill the water to a certain level.

Further, another effect of the present invention is that the water level of the water can be easily checked and the state of the pressure can be checked.

1 is a perspective view of an embodiment in which members are assembled with respect to an ultra-high-pressure water supply device for inspecting an engine block crack according to the present invention.
2 is a perspective view of a basic configuration of an ultra-high-pressure water supply device for inspecting an engine block crack according to the present invention.
3 is a view showing an embodiment in which members are connected to an ultra high-pressure water supply device for inspecting an engine block crack according to the present invention.
FIG. 4 is a view showing an example of connection with an engine block that performs crack inspection by high-pressure water supplied from an ultra-high-pressure water supply device for crack inspection of an engine block according to the present invention.
5 is a control block diagram for operation of an ultra high-pressure water supply device for an engine block crack inspection according to the present invention.
6 is a flowchart of a crack inspection method using an ultra high-pressure water supply device for cracking an engine block according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

That is, the method for inspecting an engine block crack using an ultra-high-pressure water supply device 10 for an engine block crack inspection and an ultra-high-pressure water supply device according to the present invention, High pressure water supply device (10) for inspecting the presence or absence of a crack in the engine block (11) by injecting water, and a crack inspection method therefor.

The engine block 11 made of metal is composed of a body equipped with an engine cylinder and a header on the body. Such an engine block appears to be a hard metal in appearance, but oil lubricating and cooling Many holes and flow circuits are formed. However, these holes may cause some cracks (cracks) in the molding process due to the metal characteristics of the engine block, and cracks can cause serious problems during engine operation. Therefore, It is an important factor in engine operation. The 'super' high pressure described in the present invention means a high pressure in which the pressure is increased to such an extent that water under high pressure penetrates even in a minute gap to confirm cracks. For this purpose, the compressed air Pressure state 'through a process of continuously pressurizing the air pressurized by the air compression pump 51, which will be described later, in the ultra-high-pressure water cylinder tank 20 for a predetermined period of time. That is, the term 'ultra-high pressure' in the present invention generally means that the pressurized air is further subordinately pressurized by the compressor, and then the further pressurized air is accumulated for a predetermined time to make the water under an augmented high pressure state something to do.

Therefore, the present invention is intended to check the presence or absence of a crack by injecting high-pressure water into the engine block with the engine block 11 as an object. Pressure water cylinder tank 20 for supplying ultra-high-pressure water to be injected at a predetermined position of the engine block.

The ultra-high pressure water cylinder tank 20 according to the present invention allows high-pressure water to be injected into the engine block, so that cracks can be detected by whether high-pressure water is leaked even if there is a small crack .

The ultra-high-pressure water cylinder tank 20 for this purpose has a long cylindrical shape up and down, injects water at the top, and injects high-pressure air.

In addition, in order to inject ultra high-pressure water into the engine block, the high-pressure water is drained from the engine block 11 to be injected into the engine block 11. A pressure gauge 34 for measuring the internal pressure of the upper portion and a safety valve 33 for lowering the internal pressure of the ultra high pressure water cylinder tank 20 when the abnormal high pressure is formed are connected. The pressure gauge 34 is used to check the pressure inside the ultra-high pressure water cylinder tank 20, and when the pressure is too high, the pressure gauge 34 maintains the pressure appropriately at a predetermined level .

The detailed configuration of the ultra high-pressure water cylinder tank 20 according to the present invention will be described as follows. First, a body for containing water and high-pressure air is provided inside. As one kind of such a body, the shell body 24 in a cylindrical shape having a thick thickness and the shell body 24 in the form of a thick body are covered with the shell body 24, A lower cap 25, and the like, according to an embodiment of the present invention.

And a blind flange 21 which blocks the upper part of the shell body 24 and blocks the outside and the inside together with the shell body 24 and the lower cap 25.

A shell flange 23 is formed at the upper circumference of the shell body 24 and connected to the edge of the outlet blind flange 21 by bolts. Between the tank shell flange 23 and the outlet blind flange 21 is provided a gasket 22 for airtightness.

The inlet and outlet blind flange 21 is provided with a water inlet connection part 211 through which the water inlet line 31 is connected to allow water to be introduced into the ultra high pressure water cylinder tank 20.

And a high-pressure air inlet connection portion 212 to which the high-pressure air inlet line 32 is connected so that the high-pressure compressed air flows. High pressure air is continuously injected into the ultra high pressure water cylinder tank 20 in a state in which water is contained, thereby forming an ultra high pressure state.

And a gauge connection part 214 to which a pressure gauge 34 is connected is provided with a safety valve connection part 213 to which a safety valve 33 for reducing the pressure by discharging internal air is formed when abnormal high pressure is formed .

Pressure water outlet connection portion 241 to which a high-pressure water outlet line 36 for discharging high-pressure water therein is connected to one side of the shell body 24, and the high-pressure water is supplied to the high-pressure water outlet connection portion 241, And is supplied to the engine block 11.

The ultra high pressure water cylinder tank 20 is fixed to the tank frame 27 as shown in the accompanying drawings, and the tank frame 27 is firmly fixed to the ground. The frame connecting legs 242 are provided on the side of the body of the ultra high pressure water cylinder tank 20 with respect to the tank frame 27 and are fixed to the tank frame 27.

Further, a drainage drain connection part 251 is provided under the ultra high-pressure water cylinder tank 20 to discharge the remaining solution through the drainage drain line 37 when cleaning or the like is performed.

The ultra-high-pressure water supply device (10) is also provided with a structure for supplying high-pressure compressed air to the ultra-high-pressure water cylinder tank (20).

Pressure compressor 51 for compressing air in order to supply high-pressure compressed air into the ultra-high-pressure water cylinder tank 20. The high-pressure compressed air compressed by the air compression pump 51 A stored air compression tank 52 is provided.

Of course, the air introduced into the air compression pump 51 can be further increased in pressure when the primary compressed air from the outside is supplied from a compressor or the like.

An air filter (41) for removing impurities from the air introduced into the air compression pump (51) is provided to prevent foreign matter from entering.

And an air filter section 42 for sensing the flow of air flowing through the air filter 41 to the air compression pump 51 side. In this air filter, the sensory part 42 may be configured to sense a generally used air flow, and may sense pressure. Such sensing sensors may transmit sensing information to the controller when some control embodiment is applied.

According to the present invention, there is provided an ultra-high pressure water supply apparatus 10 for inspecting an engine block crack, comprising: an inflow / outflow blind flange 21 which can be installed with a pressure gauge or a safety valve, The gasket 22 or the like is coupled to the tank shell flange 23 on the upper part of the body to block the upper part. And each valve is closed to form an airtight condition with the outside.

Then, the valve of the water inlet line 31 is opened to store water into the body of the ultra-high pressure water cylinder tank 20, and water is filled to a predetermined height in view of the water level shown in the water level gauge 26 at one side of the body The valve of the water inlet line 31 is closed to stop the water supply.

Thereafter, the air compression pump 51 is operated to compress the high-pressure air into the air compression tank 52 and the valve of the high-pressure air inlet line 32 coupled to the high-pressure air inlet connection portion 212 is opened, High pressure air is injected into the tank (20). Accordingly, the high-pressure air inlet connection portion 212 is located above the ultra-high-pressure water cylinder tank 20, so that high-pressure air is injected into the space where the water is contained.

As the high-pressure air is injected in this manner, the pressure inside the ultra-high-pressure water cylinder tank 20 is gradually increased. The pressure of the ultra high pressure water in the cylinder tank 20 can be confirmed through the pressure gauge 34 coupled to the upper side. When the pressure rises abnormally, the safe valve 33 is operated, Or more.

The water in the ultra-high pressure water cylinder tank 20 is discharged through the valve of the ultra-high pressure water outlet line 36 to the outside and is discharged to the outside through the engine block ultra high-pressure water injector 13 under the control of the crack inspection apparatus 15 The engine block 11 is injected into the engine block 11, so that the engine block 11 is fixed to the engine block fixing device 12 and cracks are inspected. Crack inspection can be performed by visually inspecting whether water leaks from the cracked area or using a special device to detect pressure through sensing and quantity sensing. Can be used.

Also, during the crack inspection by discharging the high-pressure water having a high pressure from the ultra-high-pressure water cylinder tank 20, the space becomes empty by discharging the high-pressure water in the ultra-high-pressure water cylinder tank 20 according to the discharge of the high- Pressure change can be detected through the pressure gauge 34. When the pressure falls below a predetermined pressure, the air compression pump 51 is operated, the valve is opened, and the high-pressure water in the cylinder tank 20 is supplied to the high- Let it be injected again. This allows the high pressure to continue to be formed so that the discharged water is discharged at a high pressure.

When the water level displayed on the level gauge 26 becomes lower than the predetermined height during the subsequent use, the discharge of the high-pressure water is stopped and the valve of the water inlet line 31 is opened to inject the water back into the ultra-high-pressure water cylinder tank 20 . As described above, when the predetermined level is reached, the valve is closed and compressed air is injected to establish a high-pressure environment. After the predetermined pressure is reached, the gas is injected into the engine block to proceed with crack inspection.

In order to inspect the cracks of the continuous engine block, the ultra high-pressure water cylinder tanks 20 according to the present invention may be provided in a plurality of the cylinders so as to be interlocked with each other.

The control device for discharging the high-pressure water from the ultra-high-pressure water supply device 10 may be constructed as follows.

Pressure sensor 63 for measuring the pressure inside the ultra-high-pressure water cylinder tank 20 and a water level sensor 62 for sensing the level of the injected water, .

In this way, the water level and pressure level of the water in the ultra-high pressure water cylinder tank 20 can be visually inspected through a level gauge or a pressure gauge or measured by the water level sensor 62 or the pressure sensor 63 It might be.

A control signal for stopping the operation of the air compression pump 51 when a predetermined level of water is present in the ultra high pressure water cylinder tank 20 and the pressure is lower than a predetermined pressure, And a device control unit 61 for transmitting the device information.

The other device control unit 61 may be operable to operate the air compression pump 51 or other pressurizing device and may also be provided with the data information from each sensor and the status information of each stage in the ultra high pressure water supply device 10 It may be provided to be transmitted to a control unit or a control monitor that can be viewed by an administrator.

Next, a description will be made of a crack inspection method using the ultra high-pressure water supply device for engine block crack inspection according to the present invention.

A gasket 22 and an outlet blind flange 21 are coupled to an upper portion of a cylindrical body to form an ultra high pressure water cylinder tank 20 so as to fill the inside with water and form an internal pressure, (20).

Thereafter, a water inflow step (S10) is performed in which water is filled into the ultra-high pressure water cylinder tank (20) at a predetermined water level to achieve a predetermined water level. Accordingly, the water is filled in the ultra-high-pressure water cylinder tank 20 at a predetermined height, and water can be filled so that only the upper portion (about 10 cm)

Next, the water is filled in the ultra-high-pressure water cylinder tank 20, the air inlet pump is closed, the air compression pump 51 is operated, and high-pressure compressed air is supplied into the ultra- The ultrahigh pressure forming step S20 is performed. So that an internal pressure of about 0.7 MPa (7.0 Kg / cm 2 G) (maximum 1.17 MPa (11.7 Kg / cm 2 G)) is formed. For this purpose, the shell body 24 and the like of the ultra-high-pressure water cylinder tank 20 are formed so as to form a sufficiently thick outer wall so that a high-pressure state can be stably achieved even at a high internal pressure.

In this state, in the state in which the pressure inside the ultra-high pressure water cylinder tank 20 forms a predetermined pressure, the ultra high pressure water outlet line 36 discharges the water formed with the high pressure in the ultra high pressure water cylinder tank 20 The discharging step S30 is performed.

And a crack inspection step for causing water having a high pressure supplied from the ultra-high pressure water cylinder tank 20 to flow into the engine block 11 through the engine block high pressure water injection device 13 coupled to the engine block 11 (S40). The high pressure water supplied from the ultra high pressure water cylinder tank 20 is injected into the one or more engine block 11 through the high pressure water supply line under the control of the crack inspection device 15, So that the crack test is performed.

When the pressure is decreased corresponding to the volume of high pressure water drained during the crack inspection of the engine block 11, the air compression pump is operated or high pressure compressed air is injected into the ultra high pressure water cylinder tank 20 to maintain the high pressure state When the water in the super high pressure water cylinder tank 20 is lower than a predetermined water level, the high pressure water discharge is stopped, the water is filled again, and the crack is inspected again by forming a high pressure. Further, when a plurality of ultra-high-pressure water cylinder tanks 20 are provided, engine crack inspection can be continued.

In this way, water is supplied to high-pressure high-pressure water for engine block crack inspection, and crack inspection can be easily performed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The technical idea of the present invention should not be construed as being limited.

10: super high-pressure water supply device 11: engine block
20: super high-pressure water cylinder tank 21: flow-in blind flange
24: Shell body 26: Water level gauge
41: air filter 51: air pump

Claims (5)

An ultra high-pressure water supply device for inspecting the presence or absence of a crack in an engine block by injecting water at a predetermined position of the engine block,
Pressure water cylinder tank for supplying ultra-high-pressure water for injection to a predetermined position of an engine block,
The ultra high pressure water cylinder tank,
A cylindrical shape is formed up and down, water is injected into the upper part, high pressure air is injected,
In one side, the ultra high-pressure water is drained to inject the ultra high-pressure water into the engine block,
A pressure gauge for measuring the inner pressure of the upper portion and a safety valve for lowering the pressure inside the super high pressure water cylinder tank when the abnormal high pressure is formed,
The ultra high pressure water cylinder tank,
A shell body in the form of a cylindrical tank;
A lower cap covering the bottom of the shell body and containing water therein together with the shell body; And
And an outlet blind flange which covers the upper part of the shell body and blocks the outside and the inside together with the shell body and the lower cap,
In the inflow blind flange,
A water inlet connection portion to which a water inlet line is connected to allow water to flow therein;
A high-pressure air inlet connection portion to which a high-pressure air inlet line is connected so that high-pressure compressed air flows;
A safety valve connection portion to which a safety valve for reducing the pressure by discharging the internal air when the high pressure is formed is connected; And
A gauge connection portion to which a pressure gauge is connected,
And a high-pressure water outlet connection portion to which a high-pressure water outlet line through which the high-pressure water is discharged is provided at one side of the shell body,
A water level sensor installed inside the ultra-high pressure water cylinder tank for sensing a level of the injected water;
An internal pressure sensor for measuring a pressure inside the ultra high pressure water cylinder tank; And
A device controller for sending an operation signal of an air compression pump when a predetermined level of water is present in the ultra high pressure water cylinder tank and a pressure lower than a predetermined pressure, and a control signal for stopping the operation of the air compression pump when the pressure is higher than a predetermined pressure;
Lt; / RTI >
Wherein the water level of the water supplied into the ultra high pressure water cylinder tank is positioned above the high pressure water outlet connection portion.
delete The method according to claim 1,
An air compression pump for compressing air to supply high-pressure compressed air into the ultra-high-pressure water cylinder tank;
An air compression tank in which high-pressure compressed air compressed by the air compression pump is stored;
An air filter for removing impurities from air introduced into the air compression pump; And
And an air filter for sensing the flow of air flowing through the air filter to the air compression pump side.
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KR1020150154268A 2015-11-04 2015-11-04 Suppling apparatus for ultra high pressure water for crack test of engine block KR101923422B1 (en)

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KR1020150154268A KR101923422B1 (en) 2015-11-04 2015-11-04 Suppling apparatus for ultra high pressure water for crack test of engine block

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KR101224192B1 (en) * 2012-04-06 2013-01-21 유종훈 High temperature high pressure valve test device
KR200475667Y1 (en) * 2013-02-14 2014-12-19 한전케이피에스 주식회사 Leak test device and method for close torque control moter operated parallel gate valve

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KR100448123B1 (en) * 2002-10-04 2004-09-10 현대자동차주식회사 Device for knowing crack of cylinder head
KR100684068B1 (en) * 2006-07-14 2007-02-20 고려검사주식회사 An apparatus for controlling the gas pressure
KR20130003225U (en) * 2011-11-23 2013-05-31 한국철도공사 test apparatus for membrane pump of KTX

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Publication number Priority date Publication date Assignee Title
KR101224192B1 (en) * 2012-04-06 2013-01-21 유종훈 High temperature high pressure valve test device
KR200475667Y1 (en) * 2013-02-14 2014-12-19 한전케이피에스 주식회사 Leak test device and method for close torque control moter operated parallel gate valve

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