KR101477577B1 - The water pressure cap for pressure testing a pipe - Google Patents

The water pressure cap for pressure testing a pipe Download PDF

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Publication number
KR101477577B1
KR101477577B1 KR20140108478A KR20140108478A KR101477577B1 KR 101477577 B1 KR101477577 B1 KR 101477577B1 KR 20140108478 A KR20140108478 A KR 20140108478A KR 20140108478 A KR20140108478 A KR 20140108478A KR 101477577 B1 KR101477577 B1 KR 101477577B1
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KR
South Korea
Prior art keywords
pipe
pressure
piping
circumferential surface
water
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KR20140108478A
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Korean (ko)
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이윤중
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이윤중
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Publication date
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Priority to KR20140108478A priority Critical patent/KR101477577B1/en
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Publication of KR101477577B1 publication Critical patent/KR101477577B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/02—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/115—Caps
    • 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
    • G01M3/28—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 pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12—Pressure testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0222—Temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/023—Pressure

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The present invention relates to a hydraulic cap for pressure testing of piping.
In order to achieve the above object, the present invention provides a hydraulic cap for pressure testing of a piping according to the present invention, wherein a seating space in which an end of the piping is inserted is formed in the body, A cover portion having a water supply passage and a drain passage communicating with the seating space; And a support portion attached to the cover portion and pressing the outer circumferential surface of the pipe.
In addition, inside the cover portion, an O-ring is in close contact with the outer circumferential surface of the pipe and the inner circumferential surface of the cover portion to prevent the fluid inside the pipe from leaking to the outside, and a cylindrical O-ring pressing member for pressing the lower portion of the O- The pressure cap for pressure testing of the piping is provided.
Therefore, according to the present invention, a cover portion having a water supply passage and a drain passage formed at an end portion of a pipe provided in a pipe pressure testing device for measuring a pipe pressure and a support portion for pressing the outer circumferential surface of the pipe, The airtightness can be maintained and the air inside the piping can be smoothly discharged through the drainage passage when the fluid flows through the water supply passage of the piping so that the pressure test of the piping can be performed while the water pressure is accurately raised to the set pressure inside the piping. The accuracy and reliability of the pressure test can be improved.
Further, an O-ring and an O-ring pressing member are further provided between the inner circumferential surface of the cover portion and the outer circumferential surface of the pipe to prevent the fluid of the pipe from leaking to the outside, and a fixing member having a toothed portion inside the support portion presses the pipe It is possible to test the state of the pipe in a state where other factors such as leakage are blocked when the pipe pressure test is performed by increasing the airtightness of the pipe.

Description

[0001] The present invention relates to a water pressure cap for pressure testing,

The present invention relates to a hydraulic cap for pressure testing of piping, and more particularly, to a hydraulic pressure cap for a piping pressure test apparatus, which comprises a cover portion having a water passage and a drain passage formed at an end of a pipe provided in a pipe pressure tester for measuring a pipe pressure, So that the airtightness of the pipe can be maintained by blocking the end of the pipe and the air in the pipe can be smoothly discharged through the water drain passage when the fluid flows through the water supply passage of the pipe, The pressure test of the pipe is carried out in a state in which the pressure is accurately raised to the set pressure, whereby the accuracy and reliability of the pressure test can be enhanced.

Further, an O-ring and an O-ring pressing member (50) are further provided between the inner circumferential surface of the cover portion and the outer circumferential surface of the pipe to prevent the fluid of the pipe from leaking to the outside, and a fixing member, To thereby improve the accuracy of the piping pressure test by increasing the airtightness of the piping.

Generally, in civil engineering works such as apartments, buildings, houses, tunnels, overpasses and bridges, various pipes for water supply, lubrication or heating, fire water and drainage are installed.

Most of these pipes are buried in the wall or floor of the building. They are gradually made according to the building process of the building. If there is a defect such as leakage in the pipe embedded in the wall or floor of the building, It is difficult to find the building and the construction cost is increased due to the delay of the construction such as the need to rework and the life of the building is shortened.

Therefore, the piping is a piping test suited to each application, and it is possible to perform nondestructive inspection such as ultrasonic inspection, eddy current test, infiltration method, magnetic particle inspection method, The presence or absence of a leak due to a defective joint, defects in the materials used, and patterns of deformation are checked by a pressure test.

The hydraulic test using the fluid during the above pressure test has a merit that relatively large pressure can be easily applied and that even if the pipe ruptures, the risk is comparatively small, it is widely applied not only to the piping but also to the test of the high pressure vessel, the pump and the tank.

However, in the pressure test of the piping, both ends of the piping are not completely sealed, or the accurate pressure can not be measured due to the residual air existing in the piping, so that the normal piping may be mistaken for defects and waste can be caused. The accuracy and reliability of the test can not be maximized.

In order to increase the accuracy of such piping, a conventional "hydraulic test apparatus for piping (Korean Patent Laid-open Publication No. 10-2014-0057771)" has been proposed. According to the hydraulic test apparatus for such piping, A supply water supply pipe for transferring the supply water in accordance with opening / closing degree of the control valve; A first blind flange coupled to one end of the pipe for hydraulic test to close one end of the pipe; And a second blind flange coupled to another end of the pipe to close the other end of the pipe, wherein the second blind flange is connected to the supply water supply pipe and is connected to the inside of the pipe And a supply water flow path formed by the supply water flow path.

Wherein an inlet of the supply water flow path connected to the supply water supply pipe is formed on an upper side of a rim of the second blind flange and an outlet port of the supply water flow path connected to the inside of the pipe is connected to an air discharge slot So that the water pressure test of the pipe can be performed by a simple method of sealing both ends of the pipe with the first blind flange and the second blind flange. On the other hand, When the supply water flow path is blocked by the supply water, that is, when a large amount of supply water flows in, the residual air is not discharged to the outside, and residual air still exists in the pipe, There is a disadvantage in that accuracy can not be secured.

Further, according to the conventional "assembled type hydraulic cap for pressure test of building granulation piping (Korean Registered Utility Model No. 20-0297181) ", after fixing the fastener fitted with the fixing bolt to the end of the granular pipe and fitting the packing, Is fastened to the threaded portion of the fastener in such a manner that the threaded portion of the connection port on which the pressure gauge is mounted is fitted.

However, in the conventional 'assembled water pressure cap for pressure test of building granulation piping', a plurality of fixing bolts are fixed radially to the outer circumferential surface after the fixing pipe is inserted into the granulation pipe, There is a problem that the tightness of the fixture and the granular pipe are loosened or released due to an external impact, resulting in poor accuracy and reliability of the pressure test.

In addition, since the air remaining in the granulated pipe can not be discharged, the water pressure inside the granulated pipe can not be raised normally, and the accuracy of the pressure test is lowered.

In order to solve the above-mentioned problems, the present invention provides a pipe pressure measuring apparatus for measuring a pipe pressure, comprising: a cover portion having a water passage and a drain passage formed at an end of a pipe installed in the pipe pressure testing device; And the airtightness of the pipe can be maintained by blocking the end of the pipe. When the fluid flows through the water supply passage of the pipe, the air inside the pipe is smoothly discharged through the drainage passage, The accuracy of the pressure test can be improved and the reliability of the pressure test can be improved.

Further, an O-ring and an O-ring pressing member are further provided between the inner circumferential surface of the cover portion and the outer circumferential surface of the pipe to prevent the fluid of the pipe from leaking to the outside, and a fixing member having a toothed portion inside the support portion presses the pipe Another object of the present invention is to make it possible to test the state of the piping in a state in which other factors such as leakage are blocked when the piping pressure test is performed by increasing the airtightness of the piping.

In order to attain the above object, the present invention provides a hydraulic cap for pressure testing of a piping, comprising: a body having a seating space into which an end of the piping is inserted; and a water supply passage and a water drain passage communicating with the seating space, A cover portion formed; And a support portion attached to the cover portion and pressing the outer circumferential surface of the pipe.

In addition, inside the cover portion, an O-ring is in close contact with the outer circumferential surface of the pipe and the inner circumferential surface of the cover portion to prevent the fluid inside the pipe from leaking to the outside, and a cylindrical O-ring pressing member for pressing the lower portion of the O- .

According to the present invention, a cover portion having a water supply passage and a drain passage formed at an end portion of a pipe provided in a pipe pressure testing device for measuring a pipe pressure and a support portion for pressing the outer circumferential surface of the pipe are provided to block the end portion of the pipe, The airtightness can be maintained and the air inside the piping can be smoothly discharged through the drainage passage when the fluid flows through the water supply passage of the piping so that the pressure test of the piping can be performed while the water pressure is accurately raised to the set pressure inside the piping. The accuracy and reliability of the pressure test can be improved.

Further, an O-ring and an O-ring pressing member are further provided between the inner circumferential surface of the cover portion and the outer circumferential surface of the pipe to prevent the fluid of the pipe from leaking to the outside, and a fixing member having a toothed portion inside the support portion presses the pipe It is possible to test the state of the pipe in a state where other factors such as leakage are blocked when the pipe pressure test is performed by increasing the airtightness of the pipe.

1 is a perspective view of a hydraulic cap for pressure testing of piping according to the present invention.
2 is an AA cross-sectional view of a hydraulic cap for pressure testing of piping according to the present invention.
3 is a BB sectional view of a hydraulic cap for pressure test of piping according to the present invention.
4 is an exploded view of a hydraulic cap for pressure testing of piping according to the present invention.
5 is a schematic view of a piping pressure testing apparatus provided with a hydraulic cap for pressure testing of piping according to the present invention.
6 is a use state of the hydraulic cap for pressure test of piping according to the present invention.

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

FIG. 1 is a perspective view of a hydraulic cap for pressure testing of a piping according to the present invention, FIG. 2 is a cross-sectional view of the hydraulic cap for pressure testing of a piping according to the present invention, And FIG. 4 is an exploded view of a hydraulic cap for pressure testing of piping according to the present invention.

1 to 4, in the hydraulic cap 1 for piping pressure test which is fastened to one end of the piping 2 so as to measure the pressure of the piping 2, A water supply passage 13 communicating with the seating space 12 and a water discharge passage 12 communicating with the seat space 12 are formed at one end of the body 11 in a body 11 in which a seat space 12 into which the end of the pipe 2 is inserted is formed, 14) are formed; And a support part 20 attached to the cover part 10 and pressing the outer circumferential surface of the pipe 2. [

The hydraulic cap for pressure test of the piping according to the present invention constructed as described above will be described in detail as follows.

The cover portion 10 of the hydraulic cap 1 for pressure test of the present invention is formed in a cylindrical shape with its bottom opened and a seating space 12 into which the pipe 2 is inserted is formed inside the body 11 do.

2 to 3, the supporting portion 20 is coupled to the support portion 20 for pressing the outer circumferential surface of the pipe 2 so as to increase the airtightness of the pipe 2, A coupling groove 15 on which the coupling protrusion 25 formed on the upper portion is seated is formed.

The cover portion 10 is provided with a water supply passage 13 for supplying fluid from the outer circumferential surface to the seating space 12 of the body 11 and supplying the fluid to the pipe 2, A drainage passage 14 for discharging the fluid after discharging the fluid is formed and a separate passage or device for discharging the air inside the pipe 2 is not required.

In addition, when the fluid flows into the pipe 2 through the water supply passage 13 and the air remaining in the pipe 2 is discharged to the outside through the water discharge passage 14, The fluid is discharged through the drainage passage 14 so that the water pressure of the pipe 2 is normally raised while the residual air of the pipe 2 is removed so that the accuracy and reliability of the pressure test It is possible to maximize it.

The inlet of the water supply passage 13 and the outlet of the water discharge passage are formed with female threads so that the water supply pipe 3 and the water discharge pipe 4 are connected to the water supply passage 13 and the water discharge passage 14, The formed nipple 60 is screwed.

When the fluid flowing into the seating space 12 of the body 11 falls from the upper surface of the pipe 2 to the floor surface, the longer the length of the pipe 2, (30) is formed in communication with the water supply passage (13) to prevent air from remaining in the water supply pipe (2).

The inlet pipe 30 may be integrally formed at the end of the water supply passage 13 but may be screwed to a thread formed at the end of the water supply passage 13 so that the cover portion 10 are separated from each other and are easily stored and moved.

In addition, a large amount of fluid flows into the pipe 2 by flowing the fluid into the pipe 2 through the inflow pipe 30 through the water supply passage 13, There is an advantage that it is possible to prevent a high pressure temporarily from being applied.

A fixture 16 fixed to the support table 410 of the pipe pressure testing apparatus 100 is provided at the center of the upper surface of the cover portion 10 so that the pipe 2 is shaken by water pressure or external force Can be prevented.

The fixture 16 is integrally formed on the upper end of the body 11 of the cover 10 and is formed as a rectangular plate having a space into which the support 410 can be inserted.

As shown in FIGS. 2 to 4, the support portion 20 of the hydraulic cap 1 for pressure test of the present invention is provided in a semicircular cylinder, and both sides thereof are screwed together to form a cylindrical body And a clamp for pressing the outer circumferential surface of the pipe (2).

The support part 20 is formed with a coupling protrusion 25 at an upper part thereof and is coupled to the coupling groove 15 of the cover part 10 and has an inner circumferential surface formed with a seating groove 22a ' A pushing member 23 having a toothed portion 23a formed on the inner circumferential surface thereof is screwed to the ball 22 and the mounting groove 22a so that the toothed portion 23a presses the outer circumferential surface of the pipe 2, The teeth 2 expand radially by the water pressure so that the teeth 23a further pressurize the outer circumferential surface of the pipe 2 to further enhance the airtightness of the pipe 2. [

A threaded hole 22b is formed at one side of the outer circumferential surface of the coupling hole 22 so as to be screwed with the pressing hole 23 and communicated with the threaded hole 22b, And a screw groove 23b formed with a thread on one side is formed.

The pressing part 23 and the coupling part 22 are formed in a simple structure for separation and coupling so that when the toothed part 23a of the pressing part 23 is worn out for a long time, Consumption can be minimized.

2 to 4, in the inside of the cover part 10, the fluid inside the pipe 2 leaks to the outside due to the water pressure, An O-ring 40 that is in close contact with the outer circumferential surface of the pipe 2 and the inner circumferential surface of the cover portion 10 is formed.

The O-ring 40 is installed in the lower part of the O-ring 40 in close contact with the inner circumferential surface of the cover 10 and the outer circumferential surface of the pipe 2 so that the O- An o-ring pressing member 50 is formed.

The lower end surface of the O-ring pressing member 50 is formed of a cylindrical metal pipe so that the lower end surface of the O-ring pressing member 50 can be closely attached to the upper end surface of the 'C' shaped seating groove 22a of the coupling hole 22, Can be prevented from leaking to the outside.

In addition, the O-ring 40 is initially seated in the O-ring groove 16 formed around the inner side surface of the cover portion 10, and the O-ring pressing member (not shown) is inserted between the cover portion 10 and the pipe 2 50 so as to be brought into close contact with the step 17 formed on the upper end of the inner side surface of the cover portion 10 so that the pipe 2 is inflated by the water pressure, The outer circumferential surface of the pipe 2 is further brought into close contact with the outer circumferential surface of the pipe 2, and the airtightness of the pipe 2 is further enhanced.

The hydraulic cap 1 for pressure testing of the piping according to the present invention is fastened to a plurality of pipes provided in the water tank 400 of the piping pressure testing apparatus 100, respectively.

The cover portion 10 is fastened to the lower portion of the pipe 2 in a structure in which the water supply passage 13 and the drainage passage 14 are not provided, 1 are fixedly installed on the bottom of the water tank 400.

5, the fluid supplied from the water supply device 200 is supplied to the pipe 400 of the water tank 400 through a supply part 300 electrically connected to the control box 700. In this case, (2) to raise the pressure of the pipe (2) to the set pressure.

The supply unit 300 includes an air tank 310 connected to the control box 700 to allow the fluid flowing into the pipe 2 to be introduced into the control box 700 at a predetermined amount and pressure, A high-pressure pump 320, and a pressurization pump 330.

In accordance with a signal from a pressure sensor 510 for measuring the pressure of the pipe 2 so as to check the abnormality of the pipe 2 while maintaining the pressure of the pipe 2 for a predetermined time, 2 and the fluid discharged from the pipe 2 are electrically connected to the control box 700. The control box 700 includes a valve body 500,

The valve unit 500 includes a first solenoid valve 520 for controlling the fluid flowing into the pipe 2 and a second solenoid valve 530 for controlling the fluid discharged from the pipe 2, The first solenoid valve 520 and the second solenoid valve 530 are operated according to the signal of the pressure sensor 510 when the pressure of the pressure sensor 510 is reached and the pressure set by the control box 700 is reached. It is possible to test the abnormality of the pipe 2 for the predetermined time.

At this time, it is preferable to apply a pressure of 5 to 10 bar depending on the diameter of the pipe 2.

The fluid supplied from the water supply device 200 and the fluid discharged from the pipe 2 are supplied to the water tank 400 through the water cooler and heater 600 so that the temperature of the pipe 2 can be kept constant. And the fluid in the water tank 400 is discharged to the water cooler and heater 600 so that the fluid can be circulated to each other and the fluid of 20 to 50 ° C is supplied to the water tank 400 according to the use environment of the pipe 2 .

In addition, the water tub 400 is provided with a fill valve 420 at one side so that a constant amount of fluid can be always stored.

The fill valve 420 is the same as a structure provided in a water supply cylinder of a general toilet, and a detailed description thereof will be omitted.

The upper part of the water tank 400 is provided with a support 410 through which the fixture 16 provided at the upper part of the cover part 10 passes and is fixed to the upper part of the water tank 400. The pipe 2 is shaken .

Hereinafter, embodiments of the pressure cap 1 for a pressure test of a piping according to the present invention will be described in detail with reference to the accompanying drawings.

6 is a use state view of a hydraulic cap for pressure testing of piping according to the present invention.

First, when a fluid flows into the pipe 2 through the water supply passage 13 of the cover 10 communicating with the water supply pipe 3, air existing in the pipe 2 flows into the cover portion 10 through the drainage passage 14 of the first and second branch pipes 10a, 10b.

The pipe 2 is expanded when the pressure of the pipe 2 is increased through the water supply passage 13 and the outer circumferential surface of the pipe 2 is connected to the support portion 20 and the O- The tightening force of the cover portion 10 coupled with the support portion 20 becomes stronger.

At this time, the fluid flows into the pipe 2 through the inlet pipe 30 connected to the end of the water supply passage 13, that is, the inner upper end of the cover portion 10, thereby preventing air bubbles do.

When the fluid is filled in the pipe 2, the fluid is discharged through the drainage passage 14 of the cover portion 10. In the state where the remaining air is discharged into the pipe 2, It is possible to prevent leakage such as leakage after the installation by examining the abnormality such as leaking or evacuation of the pipeline 2 beforehand to improve the accuracy and reliability of the test.

1. Water pressure cap 2. Piping
10. Cover part 11. Body
12. Seating space 13. Water passage
14. Drain passage 15. Fitting groove
16. Fixture 20. Support
21. Set screw 22. Coupling port
23. Pressurizer 30. Inflow pipe
40. O-ring 50. O-ring pressing member
60. Nipple 100. Pressure testing device
200. Water supply device 300. Supply section
400. Water tank 500. Valve part
600. Cold / hot water heater 700. Control box

Claims (7)

A hydraulic cap (1) for piping pressure test, which is fastened to one end of a pipe (2) so that the pressure of the pipe (2) can be measured,
The water pressure cap 1 is formed with a seating space 12 into which an end of the pipe 2 is inserted and a water supply passage 12 communicating with the seating space 12 is formed at one end of the body 11, (13) and a drainage passage (14);
And a support portion 20 attached to the cover portion 10 and pressing the outer circumferential surface of the pipe 2. The cover portion 10 has a fixing protrusion 25 formed on the upper end of the support portion 20, And a fixing groove (15) is formed around the outer circumferential surface of the cylindrical shape so as to be seated and fixed. The method according to claim 1,
The inflow pipe (30) is further provided in the water supply passage (13) of the cover part (10) so as to prevent air bubbles from being generated due to dropping of fluid flowing into the seating space (12) Hydraulic cap for pressure testing. The method according to claim 1,
An O-ring 40, which is in close contact with the outer circumferential surface of the pipe 2 and the inner circumferential surface of the cover 10 to prevent the fluid in the pipe 2 from leaking to the outside, And a cylindrical O-ring pressing member 50 for pressing the lower portion of the O-ring 40. The O-ring 40 is formed in the O-ring groove 16 formed around the inner side surface of the cover portion 10, Is pressurized by the member (50) to the step (17) formed at the upper end inside the cover part (10). The method according to claim 1,
The cover 10 is further provided with a fixture 16 fixed to the pipe pressure testing device 100 so as to prevent the pipe 2 from being shaken by water pressure or external force at the center of the upper surface Hydraulic cap for piping pressure test. 5. The method of claim 4,
The piping pressure testing apparatus 100 supplies the fluid supplied from the water supply apparatus 200 to the piping 2 inside the water tank 400 through a supply unit 300 electrically connected to the control box 700, (510) which measures the pressure of the pipe (2) so that the pressure of the pipe (2) can be increased and the pressure of the pipe (2) A valve unit 500 for controlling a fluid flowing into the pipe 2 and a fluid discharged from the pipe 2 is electrically connected to the control box 700 according to an operation of the control unit 500, The fluid supplied from the water supply device 200 and the fluid discharged from the pipe 2 are supplied to the water tank 400 through the water cooler and heater 600 so that the temperature can be maintained constant, To the cold / hot water heater (600) Pressure cap for pressure testing. The method according to claim 1,
The support portion 20 is provided with a pair of semicircular cylindrical members that are coupled to each other by a fixing screw 21, and has a fitting hole 22 having a seating groove 22a formed on an inner circumferential surface thereof;
And a semi-cylindrical pressurizing member (23) screwed into the mounting groove (22a) of the coupling member (22) and having a toothed portion (23a) on the inner circumferential surface thereof.










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KR20140108478A 2014-08-20 2014-08-20 The water pressure cap for pressure testing a pipe KR101477577B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160109252A (en) * 2015-03-10 2016-09-21 (주)아이에스피 Piping Hydro Test Jig
KR102640486B1 (en) * 2023-06-19 2024-02-27 국방과학연구소 Hele-Shaw cell experimental device using nano energetic material and shock tube

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002039490A (en) * 2000-07-21 2002-02-06 Murai Suisen Seisakusho:Kk Pipe end closing fixture
JP2012237701A (en) * 2011-05-13 2012-12-06 Japan Steel Works Ltd:The Internal pressure testing device and internal pressure testing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002039490A (en) * 2000-07-21 2002-02-06 Murai Suisen Seisakusho:Kk Pipe end closing fixture
JP2012237701A (en) * 2011-05-13 2012-12-06 Japan Steel Works Ltd:The Internal pressure testing device and internal pressure testing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160109252A (en) * 2015-03-10 2016-09-21 (주)아이에스피 Piping Hydro Test Jig
KR101666409B1 (en) * 2015-03-10 2016-10-14 (주)아이에스피 Piping Hydro Test Jig
KR102640486B1 (en) * 2023-06-19 2024-02-27 국방과학연구소 Hele-Shaw cell experimental device using nano energetic material and shock tube

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