KR101479308B1 - Testing devices for both hydraulic and pneumatic of welded tubes - Google Patents

Testing devices for both hydraulic and pneumatic of welded tubes Download PDF

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Publication number
KR101479308B1
KR101479308B1 KR20140103974A KR20140103974A KR101479308B1 KR 101479308 B1 KR101479308 B1 KR 101479308B1 KR 20140103974 A KR20140103974 A KR 20140103974A KR 20140103974 A KR20140103974 A KR 20140103974A KR 101479308 B1 KR101479308 B1 KR 101479308B1
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South Korea
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pneumatic
main body
fixed
link
welding tube
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KR20140103974A
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Korean (ko)
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김재훈
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주식회사 이스트밸리 티아이
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B13/00—Measuring arrangements characterised by the use of fluids
    • 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
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
    • G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
    • 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
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • 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
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • 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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The present invention provides a hydraulic and pneumatic test apparatus (1) for a welded tube, which tests the leakage of gas or liquid in the welded tube (P), or the like. The test apparatus (1) includes: each of both fixed head parts (3) including base panels (4) provided to be fixed to upper parts of both sides of a rectangular body (2), respectively, and support brackets (5) provided to be fixed to the top of the base panels (4) such that the support brackets can face each other in a sickle shape; each of clamps (6) formed on the fixed head part (3) to fix an end of the welded tube (P) by a clamping cylinder (63); each of injection heads (7) slid back and forth along an LM guide (72) by a sliding cylinder (71) provided on the support bracket (5) in the rear of the clamp (6) to be closely coupled to the end of the welded tube (P), and having a hydraulic nozzle (75) and a pneumatic nozzle (76) provided on an upper side to be coupled to each other such that an injection port (77) can communicate with the hydraulic nozzle and the pneumatic nozzle; a water storage tank (8) provided in a lower part of the body (2); and a lift (9) provided on a lower part of the body (2) to lift up the body. The hydraulic and pneumatic test apparatus (1) for a welded tube provides a simple structure, thereby reducing production costs, maintenance costs, etc. and improving operational reliability, and enables a user to select a hydraulic test or a pneumatic test in one apparatus with consideration of a type of a welded tube (P) and the shape and use conditions thereof not to require two apparatuses, thereby reducing purchasing costs and maximizing efficiency.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a water pressure and pneumatic test apparatus for welding tubes,

The present invention relates to a water pressure and pneumatic combined test apparatus for a welded tube. More specifically, the present invention provides a test apparatus for selectively testing a welded tube by supplying water pressure or pneumatic pressure equal to or higher than a working pressure to a welded tube manufactured by welding And more particularly, to a water pressure and pneumatic combined test apparatus for a welding tube.

Generally, in the case of a welded tube manufactured by forming a steel plate into a pipe shape by forging by using a plurality of rollers and performing welding or the like, a pressure higher than the working pressure is applied to the inside, (Leakage test or leaking test), or pressurized test to check strength and safety. In this case, when pressure is applied to the inside of the welding tube, the welding tube is clamped and then the inside (Hereinafter referred to as a pneumatic test apparatus) that supplies various types of liquid such as water or the like, such as a water pressure test apparatus or a compressed air, at a use pressure or more, or an air pressure test apparatus And the pressure of the welding tube was inspected.

Such a conventional hydraulic pressure testing apparatus is disclosed in Korean Patent No. 1158401 (published on Jun. 25, 2012), in which a center hole is formed at both sides of the center hole, and a sealing pad is tightly coupled to both ends of a pipe A water supply core provided in the center hole to be in close contact with the outer surface of the water supply core to prevent leakage of water to the water supply pipe, The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a pneumatic test apparatus and a pneumatic test apparatus, As shown in No. 113847 (published on Nov. 29, 2007), both ends of a sewer pipe (corresponding to a pipe or a tube) A vacuum pump for connecting the sealing packer to both ends of the sewer pipe and for evacuating the inside of the sewer pipe by a vacuum tube provided through the sealing packer, a compressor for generating compressed air for expanding the packer to perform the sealing function with the inner wall of the sewer pipe, And a sensor for recognizing the leakage of the water in the sewage pipe. The present invention provides a computerized display of leakage of water through a sensor by supplying compressed air after vacuum. So that they have to be provided separately according to the type of the tube to be tested.

If there is a minute gap in the tube to be tested, the liquid such as water may not leak due to the capillary phenomenon. However, in the case of air, it is possible to find a minute leak, and the test is easy and time- On the other hand, when air is supplied at a high pressure, there is a risk of accidents due to explosion when it is compressed. However, in the case of a high pressure and a large tube, a water pressure test using a liquid which is not self- The pneumatic test is advantageous, so that a water pressure and pneumatic test device capable of selectively performing the hydraulic test and the pneumatic test in accordance with the type, the form, and the use condition of the welding tube to be tested is desperately needed.

KR 10-1158401 B1 June 25, 2012. KR 10-2007-0113847A Nov. 29, 2007.

Accordingly, the present invention has been devised to solve the above-described problems of the prior art, and it is an object of the present invention to provide a method for selecting a water pressure test or a pneumatic test according to the type, form, The welding head is hermetically coupled to both ends of the welding tube to provide a gas such as water or compressed air selectively to the fixed head portion fixed to both sides of the body so as to have clamps for fixing both end portions of the welding tube. And an injection head which is slid forward and backward from a base fixed to the main body by a head cylinder is provided. When liquid is supplied to the inside of the welding tube through the injection head and liquid is leaked to the outside of the welding tube, To the reservoir installed with the injection head, When the gas is supplied to the inside of the welding tube and the gas is leaked to the outside of the welding tube when the pneumatic test is performed, the main body is lowered by the water tank in which the water is stored so that the welding tube and the injection heads at both ends are immersed in the water The bubble is generated by the gas in the water storage tank by providing a lift for raising and lowering the main body so that the manufacturing cost is reduced and the operation reliability is high. The present invention is to provide a water pressure and pneumatic test device for a welding tube that can maximize efficiency by being able to use both pneumatic tests.

According to the present invention, there is provided a test apparatus for both a water pressure and a pneumatic pressure for a welded tube, wherein the test apparatus of the present invention comprises a rectangular main body made of a frame, A pair of base plates and a base bracket fixedly mounted on the upper portions of both base panels to fix the ends of the base plate to the upper ends of the welding tubes, And a variable block mounted on the lower end of the piston rod so as to be lifted and lowered by a clamping cylinder fixed to the tip of the support bracket on the upper side of the fixed block. When the variable block descends, the fixed block and the variable block So that the ends of the welding tube are fixed A ramp and a sliding cylinder provided on the support bracket behind the clamp to slide back and forth along the LM guide provided on the base panel, and a protruding coupling hole having a watertight packing is formed so as to be sealed in the end portion of the welding tube at the front Pressure nozzles and pneumatic nozzles are coupled to the upper end of the welding tube so as to selectively inject liquid or gas when the protruding coupling is hermetically sealed, and an injection port communicating with each of the nozzles through the protruding coupling is provided A water storage tank installed at a lower portion of the main body to inject liquid into the interior of the welding tube through a hydraulic nozzle through an injection port of the injection head to store liquid leaked when the welding tube fails; The gas is injected into the inside of the welding tube, When failure is characterized in that the lower portion of the water storage tank to the internal body and the welded tube and the injection head to the water stored in the lock to confirm the leaking gas to the eye body includes a lift installed so that the main body is elevated.

According to the concrete means for solving the above-mentioned problems, in the test apparatus for both the water pressure and the pneumatic combination for a welding tube of the present invention, both ends of the welding tube are clamped with clamps, the injection head is hermetically sealed at both ends of the welding tube, It is possible to perform a hydraulic test or a gas injection to selectively perform a pneumatic test in accordance with the type, shape and use conditions of the test tube. In the case of a hydraulic test, In case of pneumatic test, the main body is lowered by the lift, and the welding tube fixed to both clamps and the injection head sealingly connected to both ends of the welding tube to inject the gas into the inside of the welding tube together with water stored in the water tank If the gas is leaked from the welding tube when the gas is supplied after being locked, The manufacturing cost can be significantly reduced by raising and lowering the main body while allowing the liquid or gas to be selectively injected into the injection head, thereby improving the reliability of operation while preventing frequent failures It is possible to select either one of the pressure test and the pneumatic test in one device in consideration of the type, form and use condition of the welded tube. Therefore, since two devices are not necessary, it is possible to maximize the efficiency with the reduction of the purchase cost. It is possible to easily and easily test even a non-expert, and the expected effect is a great invention.

1 is a plan view showing an example in which a test apparatus of the present invention is applied;
Fig. 2 is a side view of Fig.
3 is a front view showing the entire test apparatus of the present invention.
Fig. 4 is an enlarged view of one side fixing head portion of the test apparatus of the present invention
Fig. 5 is a plan view of Fig. 4
Fig. 6 is a side view of Fig.
Fig. 7 is an enlarged view of one side of the lift of the test apparatus of the present invention
8 is a side view of Fig. 7

The present invention is used in a pressure test of a welded tube which is formed into a pipe form by forging an iron plate and then formed by welding or formed by drawing and connected by welding and used as a pipe for a heat exchanger of a ship or a power plant, As shown in Figs. 1 and 2, a plurality of welding tubes P are stacked on one side, and a tube supply apparatus A configured to supply one to three test apparatuses 1 is provided together. The tube feeding device A and the tube discharging device B are provided together with a tube discharging device B configured to discharge and load the welding tube P subjected to the pressure test by the testing device 1 of the invention, (A) and the tube discharging device (B) are not shown in detail in the drawings. And the water pressure test using a liquid such as water and the like are carried out in one to three welding tubes P supplied from the tube supplying apparatus A such as the type and the form of the welding tube P, The present invention relates to a water pressure and pneumatic combined test apparatus 1 for a welding tube which can arbitrarily select a pneumatic test by a gas such as a gas.

1 to 3, the test apparatus 1 for a welded tube of the present invention is provided with a body 2 formed in a rectangular shape using a frame made of stainless steel, The fixing head 3 is provided on both sides of both sides of the base panel 4 while the fixing head 3 is provided with the base panel 4 fixed to both upper sides of the main body 2, And a support bracket 5 fixed to the upper portion of the support bracket 5 in the form of a translator.

4 to 6, the respective ends of the welding tubes P supplied from the tube feeding device A to the upper portion of the main body 2 are provided at the opposite ends of the fixed head portion 3 on both sides, The welding head 3 is hermetically sealed and joined to the end of the welding tube P while being hermetically engaged with the end of the welding tube P, And an injection head 7 for selectively injecting liquid or gas.

The clamps 6 provided on the both side fixed head portions 3 are fixed to the front end of the base panel 4 of the fixed head portion 3 and the lower side of the welding tube P supplied to the upper portion of the main body 2 is inserted into the inner side And a clamping cylinder 63 fixed to the distal end of the support bracket 5 of the fixed head 3 at the upper side of the fixed block 61. The clamping cylinder 61 has an inner groove 611 formed to be downwardly curved, And the variable block 62 includes a piston rod 631 of the clamping cylinder 63. The variable block 62 includes a pressurizing groove 621 formed to be upwardly curved such that the upper side of the welding tube P is inserted therein, The clamping cylinder 63 is engaged with the clamping cylinder 63 so that the clamping cylinder 63 contacts the clamping block 61 when the clamping cylinder 61 is lowered and the clamping cylinder 61 is brought into contact with the holding groove 611 and the pressing groove 621 between the clamping block 61 and the variable block 62 And the welding tube P is configured to be fixed.

The injection head 7 provided to the both side fixed head portions 3 is attached to the end of the piston rod 711 of the sliding cylinder 71 provided on the support bracket 5 at the back of the clamp 6, 61 and the support bracket 5 so that the piston rod 711 of the sliding cylinder 71 protrudes and retracts the LM guide 72 to be welded And a protrusion coupling hole 73 having a watertight packing 74 is formed in the front of the injection head 7 so as to be hermetically sealed in the end portion of the welding tube P, A water pressure nozzle 75 connected to the liquid tank C through piping so as to inject liquid into the injection head 7 and an air compressor D connected to the air compressor D for injecting the gas, A nozzle (76) is coupled and installed in the injection head (7) The nozzle 75 and the pneumatic nozzle 76 are communicated in front of the projecting engagement hole 73 so that the injection hole 77 is formed so that the liquid or gas is selectively supplied into the welded tube P through the projecting engagement hole 73 .

In addition, the present invention is provided in the lower part of the main body 2 and injects liquid into the inside of the welding tube P through the injection nozzle 77 of the injection head 7 through the hydraulic nozzle 75, The main body 2 is mounted on the lower part of the main body 2 so as to be lifted and lowered and is guided to the injection port 77 of the injection head 7 through the pneumatic nozzle 76, The welding tube P and the injection head 7 are inserted into the water stored in the water storage tank 8 so as to confirm the gas leaking out when the welding tube P is defective, The lift 9 is configured to be locked.

3, 7 and 8, the lift 9 is connected to a lower portion of the main body 2 by a pair of water storage tanks 8 opposed to each other in the longitudinal direction orthogonally to the inner bottom surface of the water storage tank 8, A first link 92 provided upwardly connected to the upper portion of each of the fixing brackets 91 so as to be freely rotated by a hinge, And a connecting shaft 94 fixed to the main body 2 so that the upper ends of the second links 93 are freely rotatably connected to the upper end of the second link 93. [ A support bracket 95a is provided on both sides in the longitudinal direction of the water storage tank 8 and fixed to the ground in a direction away from the water storage tank 8 in a bidirectional outer side orthogonal to the longitudinal direction of the water storage tank 8 The lifting cylinder (9 An adjustment link 96 having an upper end freely rotatably engaged with a connection bracket 95b fixed to the end of the piston rod 951 which is projected and withdrawn from each of the four lifting cylinders 95 by a pair of both sides, 96 are installed so that the water stored in the water storage tank 8 is prevented from leaking outside the water storage tank 8 so that the lower end of the piston rod 95 is fixedly installed so that the piston rod 951 is angularly moved when the piston rod 951 protrudes and retracts from the lifting cylinder 95 A lower end fixed to each of the rotary shafts 97 in the water storage tank 8 so as to face each other so that the upper part of the rotary shaft 97 can be angularly moved when the rotary shaft 97 rotates A plurality of upper ends of the first links 92 provided in the longitudinal direction of the water storage tank 8 and a plurality of upper ends of the plurality of second links 93 And a plurality of hinges connecting the first link 92 and the second link 93 between the lower ends thereof A lifting and driving part 90b including a pair of adjusting rods 99 which are connected to each other and are disposed in the water storage tank 8 so as to be opposed to each other in both directions orthogonal to the longitudinal direction, The adjustment link 96 is angularly moved by the action of the first link 95 so that the upper end of the rotation link 98 connected to the rotation axis 97 is angularly moved about the rotation axis 97, The main body 2 is lifted up from the inside of the water storage tank 8 by the angular movement of the first link 92 and the second link 93 by raising and lowering the adjusting rod 99, .

A sliding cylinder (not shown) provided on the support bracket 5 to the rear of the clamp 6 so as to slide the injection head 7 in the LM guide 72 above the base panel 4 back and forth in the both- 71 are rotatably provided on the rear upper side of the support bracket 5 as shown in Fig. 4 and are provided on the support bracket 5 between the end of the piston rod 711 of the sliding cylinder 71 and the rear side of the injection head 7 And one end of the connecting link 78 is connected to the end of the piston rod 711 of the sliding cylinder 71, And the other end of the connection link 78 is connected to the rear side of the injection head 7 so as to freely rotate so as to inject gas into the welding tube P through the injection head 7, When the test is performed, the body (2) and the clamp (6) are lifted by the lift (9) The sliding cylinder 71 is configured not to be submerged even if the injection head 7 hermetically coupled to the end of the fixed welding tube P and the welding tube P is submerged in the water stored in the water storage tank 8 .

1 and 2, the test apparatus 1 for a welding tube for a welding tube according to the present invention having the above-described configuration is configured such that the shape of the injection head 7 of the test apparatus 1 in the tube supply apparatus A on one side, The welding tube P having undergone the pressure test in the test apparatus 1 is discharged to the tube discharge apparatus B on the other side. The test apparatus 1 has three protruding engagement openings 73 in which the injection port 77 is communicated with the injection head 7 in the fixed head portion 3 so that the welding tube P in the tube supply device A is closed, .

The welding tube P supplied from the tube supply device A is supplied to the upper part of the main body 2 and fixed to the clamp 6 of the fixed head part 3 provided on both sides of the main body 2, 7 is hermetically sealed to both ends of the welding tube P and then the liquid of the liquid tank C or the gas of the air compressor D is supplied to the injection port 77 of the injection head 7 by the kind of the welding tube P , Shape, and conditions of use, and is supplied to the inside through both ends of the welding tube (P) so as to confirm whether liquid or gas leaks from the welding tube (P).

 The clamping by the clamp 6 is carried out by supplying the welding tube P to the upper portion of the main body 2 and by fitting the fitting groove 61 of the fixing block 61 fixed to the front end of the base panel 4 fixed to the main body 2 The clamping cylinder 63 is operated to lower the variable block 62 so that the welding tube 611 is inserted between the mounting groove 611 of the fixing block 61 and the pressing groove 621 of the variable block 62 P) is fixed.

The injection head 7 of the fixed head part 3 is connected to the welding tube 7 fixed to the clamp 6 in front of the LM guide 72 provided on the base panel 4 by the sliding cylinder 71 The watertight packing 74 having a plurality of protruding coupling openings 73 is provided at both ends of the welding tube P when the protruding coupling openings 73 of the injection head 7 are inserted and coupled And then the liquid or gas selected as described above is injected into the upper part of the injection head 7 by the hydraulic nozzle 75 or the pneumatic nozzle 76 communicating with the injection port 77. [ To the injection port 77 so that the injection port 77 is continuously injected into the interior of the welding tube P through the protruding engagement hole 73 communicating with the injection port 77.

When the fluid to be injected into the welding tube P through the injection port 77 of the injection head 7 through the hydraulic nozzle 75 or the pneumatic nozzle 76 is liquid, The liquid leaking out of the welding tube P is dropped and stored in the water storage tank 8 provided in the lower part of the main body 2 and the fluid to be injected into the welding tube P is discharged to the outside The gas is leaked to the outside of the welded tube P even if there is a slight gap due to a defective molding in the welded tube P. However, in the case of such a pneumatic test, the lift 9 installed at the lower part of the main body 2, So that the main body 2 is immersed in the water stored in the water storage tank 8 so that the gas leakage in the welding tube P and the injection head 7 immersed in the water of the water storage tank 8 together with the main body 2 So that it can be confirmed by occurrence.

The lifting action of the main body 2 by the lift 9 causes the lifting cylinder 95 of the lifting drive portion 90b to angularly move the lifting link 96 so that the lower end of the lifting link 96, The upper end of the pivotal link 98 which is angularly moved around the pivotal axis 97 is moved freely in the freezing chamber 97 by rotating the pivotal link 97, The first link 92 and the second link 93 configured to be coupled with each other are folded in such a manner that when the adjuster 99 is raised and lowered, The connecting shaft 94 of the elevating support portion 90a connected to the upper end of the first link 92 freely rotates and elevates so that the main body 2 having the connecting shaft 94 fixedly moves up and down.

A clamping cylinder 63 for lifting the variable block 62 of the clamp 6 when the main body 2 is lowered into the water storage tank 8 by the lift 9 and is submerged in water; The sliding cylinder 71 which slides the injection head 7 back and forth in the LM guide 72 is installed before and behind the supporting bracket 5 in the form of a tour operator of the fixed head part 3 so as not to be immersed in water, The lifting cylinder 95 is provided outside the water storage tank 8 so that water is not spilled into the water or the water does not flow into the water, so that various cylinders can be prevented from being damaged by water.

The present invention is characterized in that the shape of the main body 2, the fixed head part 3 and the water storage tank 8 and the shapes and types of the clamping cylinder 63, the sliding cylinder 71 and the lifting cylinder 95, The number of the projecting engagement holes 73 and the shapes of the various links in the guide groove 7 are not limited to those shown in FIGS. 1 to 8, and in the detailed description of the present invention, It is to be understood that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the described embodiments but should be determined by the equivalents as well as the appended claims.

P: Welding tube A: Tube feeder B: Tube extractor
C: liquid tank D: air compressor
1: Test device 2: Main body 3: Fixing head part
4: base panel 5: support bracket 51: long hole
6: Clamp 61: Fixing block 611:
62: variable block 621: pressure groove 63: clamping cylinder
631: piston rod 7: injection head 71: sliding cylinder
711: piston rod 72: LM guide 73:
74: watertight packing 75: hydraulic nozzle 76: pneumatic nozzle
77: Inlet port 78: Connection link 8: Reservoir
9: Lift 90a: Lift-up support portion 90b: Lift-
91: fixing bracket 92: first link 93: second link
94: connecting shaft 95: lifting cylinder 951: piston rod
95a: base bracket 95b: connection bracket 96: adjustable link
97: Pivot shaft 98: Rotation link 99:

Claims (5)

A rectangular main body 2 made of a frame,
A base panel 4 fixed to both upper sides of the main body 2 and both side fixing head parts 3 composed of support brackets 5 fixed on the top of the both side base panels 4 in a translator form,
A fixing block 61 fixed to the front end of the base panel 4 to fix the end portion of the welding tube P supplied to the upper portion of the main body 2 at each of the opposing ends of the two side fixed head portions 3, A clamp 6 composed of a variable block 62 coupled to the upper end of the support bracket 5 by being lifted and lowered by a clamping cylinder 63 fixed to the tip of the support bracket 5,
The LM guide 72 mounted on the base panel 4 is slid forward and backward by the sliding cylinder 71 provided on the support bracket 5 at the rear of the clamp 6 to be closed at the end of the welding tube P, An injection head 7 having a hydraulic nozzle 75 and a pneumatic nozzle 76 coupled to the upper side for selectively injecting liquid or gas,
A water tank 8 installed at a lower portion of the main body 2 for storing a liquid leaked due to a defect of the welding tube P after the liquid is injected into the welding tube P through the water pressure nozzle 75 of the injection head 7 )Wow,
The water stored in the water storage tank 8 is supplied to the inside of the water storage tank 8 so that the gas leaked due to the defect of the welding tube P can be visually confirmed after the gas is injected into the welding tube P through the pneumatic nozzle 76 of the injection head 7 And a lift (9) installed on the lower part of the main body (2) so that the main body (2) is lifted and lowered with the main body (2), the welding tube (P) and the injection head And pneumatic combined test equipment.
The method of claim 1,
The clamp 6 is provided with an installation groove 611 formed on the upper portion of the fixing block 61 and curved downward so that the lower side of the end of the welding pipe P is inserted,
Further comprising a pressing groove (621) formed at the lower portion of the variable block (62) and curved upward to allow the upper side of the end of the welding tube (P) to be inserted.
The method of claim 1,
The injection head 7 is provided with a projecting engagement portion 73 having a watertight seal 74 to be hermetically sealed in the end portion of the welding tube P and projecting forward,
And a pouring port (77) formed in the injection head (7) so as to communicate with the pneumatic nozzle (75) and the pneumatic nozzle (76) through the projecting engagement hole (73) Device.
The method of claim 1,
The lift 9 is provided with a fixing bracket 91 provided at a lower portion of the main body 2 and having a plurality of fixing brackets 91 fixed to an inner bottom surface of the water storage tank 8 at a predetermined interval, A second link 93 connected to the upper portion of the first link 92 in a freely rotatable manner and a second link 93 fixed to the main body 2 such that the upper end of the second link 93 is freely rotatably connected. A lifting and supporting portion 90a composed of a connecting shaft 94 is provided,
Lifting cylinders 95 provided on both sides in the longitudinal direction of the water storage tank 8 in such a manner that the lower ends thereof are freely rotatably engaged with the support brackets 95a fixedly spaced apart from the water storage tank 8 in the bidirectional outer side orthogonal to the longitudinal direction of the water storage tank 8 An adjustment link 96 provided at an end of the piston rod 951 of the lifting cylinder 95 so as to be rotatably connected to the upper end of the piston rod 951 and a lower end of the adjustment link 96 fixedly installed, A rotating shaft 97 configured to be rotated by an adjusting link 96 that is angularly moved by the operation of the lifting cylinder 95 and a rotating link 98 having a lower end fixed to the rotating shaft 97 inside the water storage tank 8, And an adjustable pedestal 99 provided at the upper end of the pivotal link 98 so as to freely rotate and having a plurality of hinges connected to the upper ends of the several first links 92 and the lower ends of the plurality of second links 93, (90b), which is made up of Hydraulic and pneumatic test equipment for welding tubes.
The method of claim 1,
The sliding cylinder 71 is rotatably installed on the upper side of the support bracket 5,
One end of the piston rod 711 of the sliding cylinder 71 is freely rotatably connected to the end of the piston rod 711 and the other end of the piston rod 711 is freely rotatably connected to the rear side of the injection head 7, And a connecting link (78) provided so as to be raised and lowered in a slot (51) formed in the bracket (5).
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444963A (en) * 2015-12-01 2016-03-30 罗敏聪 Automatic steel pipe underwater airtight testing machine
CN107941438A (en) * 2017-12-22 2018-04-20 南京新核复合材料有限公司 A kind of device and detection method for detecting sealing leakage in GRP pipe hand paste
CN108170889A (en) * 2017-11-28 2018-06-15 北京天地玛珂电液控制系统有限公司 A kind of emulation test method and system of hydraulic bracket controller software
CN110926705A (en) * 2019-12-03 2020-03-27 青岛新力通工业有限责任公司 Semi-automatic pipe section air tightness testing machine
CN114871781A (en) * 2022-05-18 2022-08-09 淮南市泰能电力工程有限公司 Pressurized water reactor device with nickel-based alloy ultrasonic argon arc welding seam
CN116754137A (en) * 2023-08-18 2023-09-15 常州市布迪拉纺机设备有限公司 Negative pressure tube tightness detection device for spinning machine
KR20230147310A (en) 2022-04-14 2023-10-23 모루시스템 주식회사 Automatic inspection system and method thereof

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JP2004093245A (en) 2002-08-30 2004-03-25 Ishikawajima Shibaura Mach Co Ltd Apparatus and method for inspecting water leakage of connected water supply conduit facility
KR101158401B1 (en) 2011-04-19 2012-06-25 서광기연 주식회사 Hydraulic pressure test machine for pipes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004093245A (en) 2002-08-30 2004-03-25 Ishikawajima Shibaura Mach Co Ltd Apparatus and method for inspecting water leakage of connected water supply conduit facility
KR101158401B1 (en) 2011-04-19 2012-06-25 서광기연 주식회사 Hydraulic pressure test machine for pipes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444963A (en) * 2015-12-01 2016-03-30 罗敏聪 Automatic steel pipe underwater airtight testing machine
CN108170889A (en) * 2017-11-28 2018-06-15 北京天地玛珂电液控制系统有限公司 A kind of emulation test method and system of hydraulic bracket controller software
CN107941438A (en) * 2017-12-22 2018-04-20 南京新核复合材料有限公司 A kind of device and detection method for detecting sealing leakage in GRP pipe hand paste
CN110926705A (en) * 2019-12-03 2020-03-27 青岛新力通工业有限责任公司 Semi-automatic pipe section air tightness testing machine
KR20230147310A (en) 2022-04-14 2023-10-23 모루시스템 주식회사 Automatic inspection system and method thereof
CN114871781A (en) * 2022-05-18 2022-08-09 淮南市泰能电力工程有限公司 Pressurized water reactor device with nickel-based alloy ultrasonic argon arc welding seam
CN114871781B (en) * 2022-05-18 2024-02-27 淮南市泰能电力工程有限公司 Pressurized water reactor device with nickel-based alloy ultrasonic argon arc welding seam
CN116754137A (en) * 2023-08-18 2023-09-15 常州市布迪拉纺机设备有限公司 Negative pressure tube tightness detection device for spinning machine
CN116754137B (en) * 2023-08-18 2023-11-03 常州市布迪拉纺机设备有限公司 Negative pressure tube tightness detection device for spinning machine

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