WO2021149847A1 - Dispositif d'inspection de détendeur - Google Patents

Dispositif d'inspection de détendeur Download PDF

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Publication number
WO2021149847A1
WO2021149847A1 PCT/KR2020/001084 KR2020001084W WO2021149847A1 WO 2021149847 A1 WO2021149847 A1 WO 2021149847A1 KR 2020001084 W KR2020001084 W KR 2020001084W WO 2021149847 A1 WO2021149847 A1 WO 2021149847A1
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WO
WIPO (PCT)
Prior art keywords
expansion valve
magnet
housing
inspection device
disposed
Prior art date
Application number
PCT/KR2020/001084
Other languages
English (en)
Korean (ko)
Inventor
김한국
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to PCT/KR2020/001084 priority Critical patent/WO2021149847A1/fr
Priority to KR1020227025633A priority patent/KR20220126732A/ko
Publication of WO2021149847A1 publication Critical patent/WO2021149847A1/fr

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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
    • G01M13/00—Testing of machine parts
    • G01M13/003—Machine valves
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment

Definitions

  • the present invention relates to an expansion valve inspection apparatus, and more particularly, to an inspection apparatus capable of confirming the presence or absence of failure of an expansion valve.
  • the expansion valve may be a configuration of a refrigerant flow control device of a cooling and heating device, and generally has a working process of turning on/off the power of the coil device, and the valve needle is used to accurately control the flow of refrigerant.
  • the degree of opening of the valve port can be adjusted.
  • an electromagnetic expansion valve may be used throughout.
  • Such an expansion valve may have a locking phenomenon inside the valve due to poor installation or foreign substances. At this time, if the inside of the valve is locked and the expansion valve fails to operate, it will lead to compressor failure.
  • the expansion valve device may be composed of a valve and a coil.
  • a valve In the case of coils, normal/abnormal can be easily identified by resistance measurement, but in the case of valves, there is a problem in how to determine internal defects because they are sealed with a steel case.
  • An object of the present invention is to provide an expansion valve inspection device capable of determining whether the expansion valve is normal by examining the locking phenomenon of the expansion valve.
  • Another object of the present invention is to provide an expansion valve inspection device capable of determining whether the expansion valve is normal even for a plurality of expansion valves having different outer diameters.
  • an apparatus for inspecting an expansion valve includes a housing including an insertion part forming an insertion space into which an expansion valve in which a magnet rotor is disposed is inserted, and movably disposed inside the housing. a magnet part, wherein the magnet part is movably disposed in a direction perpendicular to a direction in which the expansion valve is inserted, and the magnet part protrudes in a direction in which the insertion part is disposed, and is inserted into the insertion part. It is possible to grasp the movement of the magnet rotor disposed inside the expansion valve, including the corner portion in contact with the outer circumferential surface.
  • the magnet unit includes a magnet moving in the direction or opposite direction in which the insertion space is arranged, and a magnet cover surrounding a part of the magnet, wherein the magnet has two sides forming an inclination angle on one side and the insertion space A corner portion of the magnet portion may be in contact with the circumferential surface of the expansion valve inserted into the insertion space, including a corner portion in contact with the expansion valve inserted into the insertion space.
  • the corner portion is disposed closest to the center of the housing than other portions of the magnet portion disposed inside the insertion space, so that only the corner portion may contact the expansion valve.
  • the magnet includes an inner portion disposed inside the magnetic cover, and an exposed portion disposed to be exposed to the outside of the magnetic cover, and the corner portion is disposed on the exposed portion, and the magnet portion other than the exposed portion is formed by the magnetic cover. can be protected.
  • the magnet by using a ferrite magnet, it is possible to prevent the magnetic force loss of the magnet rotor.
  • the magnet cover may include a cover body that covers the magnet, and a stopper protruding outward from one end of the cover body to limit movement in one direction of the magnet part, thereby limiting the movement of the magnet part.
  • the expansion valve includes a valve housing forming a space therein, and a magnet rotor disposed inside the valve housing, wherein the magnet rotor has a ring shape, and magnets of N pole and S pole are intersected Since it has, the magnet part can react to the rotation of the magnet rotor.
  • the housing includes a housing body that forms an insertion part into which the expansion valve is inserted, and forms a space in which the magnet part is disposed, and a housing cover that covers an upper side of the housing body.
  • the housing body may include an outer circumferential portion having a cylindrical outer circumference, an insertion portion disposed inside the outer circumferential portion and forming an insertion space into which the expansion valve is inserted, and the magnet portion disposed inside the outer circumferential portion.
  • the expansion valve can be inspected with a simple structure, including a guide part for guiding movement, and a lower surface part connecting the lower end of the outer circumferential part and the lower end of the insertion part.
  • One side of the circumferential surface of the insertion part extends to the guide part, so that the magnet part may move into the insertion space.
  • the guide part may include a pair of guide surfaces formed in parallel so that the magnet part moves in a straight line, and the magnet part may move in a direction perpendicular to the direction in which the insertion space is formed on the circumferential surface of the expansion valve.
  • the pair of guide surfaces includes a first guide surface formed parallel to a tangent to the inner circumferential surface formed by the insertion unit, and a second guide surface formed perpendicular to a tangent to the inner circumferential surface formed by the insertion unit. do.
  • the housing cover may include a rotation guide portion formed to rotate the housing in which the expansion valve is inserted into the insertion part around the expansion valve, so that the expansion valve inspection device disposed around the expansion valve can be easily rotated.
  • the rotation guide part is radially spaced apart from the center of the housing.
  • the expansion valve inspection device includes a magnet part movably disposed in a direction perpendicular to the insertion direction of the expansion valve, so that it is possible to easily determine whether the expansion valve is malfunctioning.
  • the presence or absence of a failure can be determined without limitation in size, which has the advantage of being able to inspect expansion valves of various sizes with one device.
  • FIG. 1 is a cross-sectional view for explaining an expansion valve according to an embodiment that can be used in the expansion valve inspection device of the present invention.
  • FIG. 2 is a cross-sectional view illustrating the magnet rotor of the expansion valve of FIG. 1 .
  • FIG 3A is a perspective view of an expansion valve inspection device according to an embodiment of the present invention.
  • Figure 3b is a plan view of the expansion valve inspection device according to an embodiment of the present invention.
  • Fig. 3C is a cross-sectional view taken along line B-B' of Fig. 3B.
  • 3D is a cross-sectional view taken along line A-A' of FIG. 3A.
  • FIG. 4 is an exploded perspective view of an expansion valve inspection device according to an embodiment of the present invention.
  • 5A is an exploded perspective view of a magnet part according to an embodiment of the present invention.
  • 5B is a perspective view of a state in which a magnet unit is coupled according to an embodiment of the present invention.
  • FIG. 6 is a perspective view of an expansion valve inserted into an expansion valve inspection device according to an embodiment of the present invention.
  • FIG. 7A and 7B are cross-sectional views for explaining the arrangement and operation of the magnet of the expansion valve inspection device in a state in which expansion valves of different sizes are inserted.
  • the expansion valve 10 is connected to the valve seat 16 to which the first connection part 34 through which the fluid is introduced and the second connection part 36 through which the fluid is discharged is connected, and to the upper end of the valve seat 16, and has A valve housing 12 forming a space, a magnet rotor 14 disposed inside the valve housing 12, and a valve port 18 connected to the magnet rotor 14 and formed in the second connection part 36 and a valve needle 20 for opening and closing.
  • the valve needle 20 may contact or be spaced apart from the valve port 18 formed inside the valve seat 16 to open and close the valve port 18 . By changing the degree of opening of the valve port 18 as the valve needle 20 moves, it is possible to control the flow of the fluid.
  • the expansion valve 10 is disposed inside the valve housing 12 and is connected to a nut 22 fixedly disposed above the valve seat 16 and the nut 22 in a screw manner to move vertically by rotation, and the valve and a lead screw 24 connecting the needle 20 and the magnet rotor 14 .
  • the lead screw 24 connects the valve needle 20 and the magnet rotor 14 .
  • the valve needle 20 may be disposed below the lead screw 24 .
  • the lead screw 24 rotates in engagement with the inner side of the nut 22 , and may move the valve needle 20 .
  • the expansion valve 10 includes a stopper 26 protruding downward from the upper end of the valve housing 12, and a spring guide rail 28 disposed along the outer circumference of the stopper 26 and having a spiral shape. and a slide ring 30 connected to the lead screw 24 and moving along the spring guide rail 28, and a stopping rod 32 connecting the slide ring 30 and the lead screw 24. do.
  • the spring guide rail 28 is fixed to the stopper 26 , and the slide ring 30 is positioned to slide spirally on the spring guide rail 28 . Accordingly, the slide ring 30 moves along the spring guide rail 28 and can move the stopping rod 32 in the vertical direction. The slide ring 30 is limited in movement at the upper end and lower end of the spring guide rail 28 .
  • the stopping rod 32 when the stopping rod 32 moves upward, it may contact the upper end of the valve housing 12 to limit the upward movement of the slide ring 30 .
  • the valve needle 20 when the valve needle 20 moves downward, it comes into contact with the valve port 18 , thereby limiting the downward movement of the slide ring 30 .
  • the magnet rotor 14 may have a ring shape, and may have a form in which magnets of the N pole 14a and the S pole 14b are intersected.
  • An electromagnetic coil (not shown) is sleeved on the outer end of the housing, and the magnetic coil generates a pulse after being energized and rotates the magnet rotor 14, thereby causing the lead screw 24 to rotate. . As the lead screw 24 rotates, the valve needle 20 may move up and down.
  • the expansion valve inspection apparatus 100 includes a housing 110 forming an insertion part 116 into which the expansion valve 10 is inserted, and a direction perpendicular to the direction in which the expansion valve 10 is inserted inside the housing 110 . It includes a magnet part 200 that is movably disposed.
  • the housing 110 includes a housing body 112 that forms an insertion part 116 into which the expansion valve 10 is inserted, and a space in which the magnet part 200 is disposed, and the housing body 112 . It includes a housing cover 130 that covers the upper side.
  • the housing body 112 has a cylindrical shape with an open top.
  • the housing body 112 includes an insertion part 116 into which one side of the expansion valve 10 is inserted.
  • the magnet part 200 disposed inside the housing body 112 is movably disposed toward the insertion space 116a formed in the insertion part 116 .
  • the housing body 112 includes an outer circumferential portion 113 having a cylindrical outer shape, and an insertion portion (116a) disposed inside the outer circumferential portion 113 and forming an insertion space 116a into which the expansion valve 10 is inserted. 116), a guide portion 117 for guiding the movement of the magnet 200 disposed inside the outer circumference portion 113, and the lower end of the outer circumference portion 113 and the lower end of the insertion portion 116 to connect and a lower surface portion 122 . Between the lower surface portion 122 and the insertion portion 116, a curved portion 126 connected in a curved shape is formed. The curved portion 126 may facilitate insertion of the expansion valve 10 into the insertion space 116a.
  • the outer peripheral portion 113 has a cylindrical shape. At least one groove surface (114a, 114b, 114c) recessed in the central direction of the housing body (112) is formed on the outer surface of the outer peripheral part (113). At the lower side of the groove surfaces 114a, 114b, 114c formed in the outer peripheral portion 113, partly opened fastening holes 124a, 124b, 124c are formed.
  • the groove surfaces 114a , 114b , 114c are formed in the longitudinal direction of the outer circumferential portion 113 , and form a groove concave toward the center of the outer circumferential portion 113 .
  • the groove surfaces 114a , 114b , and 114c may have a curved shape with the outer circumferential portion 113 , thereby reinforcing the rigidity of the housing.
  • fastening holes (124a, 124b, 124c) to which the housing cover 130 is fastened are formed.
  • three groove surfaces (114a, 114b, 114c) are formed on the outer surface of the outer circumference portion 113, three groove surfaces (114a, 114b, 114c) on the lower side of the three fastening holes ( 124a, 124b, 124c) are formed.
  • the fastening holes 124a, 124b, and 124c may be opened downwardly and radially outward.
  • the insertion part 116 has a cylindrical shape in which one side of the circumferential surface is opened.
  • the insertion part 116 may have a radius half the size of the radius of the cylindrical shape formed by the outer circumference part 113 .
  • the insertion part 116 forms an insertion space 116a into which the expansion valve 10 is inserted.
  • the insertion part 116 may be opened in the vertical direction of the insertion space 116a. A portion of the circumferential surface of the insertion part 116 is opened, so that the magnet part hole 119 is disposed or a moving magnet part hole 119 is formed.
  • the guide portion 117 extends from the insertion portion 116 .
  • the guide part 117 may include a pair of guide surfaces 118a and 118b formed in parallel so that the magnet part 200 moves in a straight line.
  • the pair of guide surfaces 118a and 118b may have different lengths.
  • the pair of guide surfaces 118a and 118b includes a first guide surface 118a formed parallel to a tangent to the circumferential surface 117 formed by the insertion part 116 and a circumferential surface formed by the insertion part 116 . and a second guide surface 118b formed perpendicular to the tangent of 117 .
  • the first guide surface 118a may be formed in a tangential direction to one side of the circumferential surface of the insertion part 116 .
  • the second guide surface 118b may be spaced apart from the first guide surface 118a by a predetermined interval, and may be formed by forming an inclination angle ⁇ in the tangential direction of the other side of the circumferential surface of the insertion part 116 .
  • the second guide surface 118b may form a surface perpendicular to the tangential direction of the circumferential surface 117 of the insertion part 116 . That is, the first guide surface 118a and the second guide surface 118b may be spaced apart from each other by the radius of the cylinder formed by the insertion part 116 .
  • a ring-shaped inner space 128 is formed between the outer peripheral portion 113 and the insertion portion 116.
  • the housing cover 130 has a cover surface 132 that covers the upper portion of the housing body 112 and protrudes downward from the cover surface 132, and the fastening holes 124a, 124b, 124c of the housing body 112) It includes at least one fastening part (133a, 133b, 133c) fastened to the.
  • the housing cover 130 includes a rotation guide part 117 formed to rotate the housing 110 in which the expansion valve 10 is inserted into the insertion part 116 around the expansion valve 10 .
  • the cover surface 132 may have a disk shape forming an opening hole 132a in the center. In the center of the cover surface 132, an opening hole 132a communicating with the insertion space 116a is formed. The opening hole 132a is disposed at the center of the cover surface 132 and may have a circular shape.
  • the cover surface 132 has a circular rotation guide hole 140 on the upper side where the rotation guide part 117 is formed.
  • the rotation guide hole 140 is radially spaced apart from the center of the cover surface 132 .
  • the rotation guide hole 140 is disposed so as not to overlap the opening hole 132a formed in the cover surface 132 .
  • a diameter formed by the rotation guide hole 140 is smaller than a diameter formed by the opening hole 132a.
  • the fastening portions 133a , 133b , and 133c extend downward from the outer edge of the cover surface 132 .
  • the fastening portions 133a, 133b, and 133c include extension portions 134a, 134b, 134c extending downward from the cover surface 132, and lower ends of the extension portions 134a, 134b, and 134c in a radial direction outward. and hook portions 136a, 136b, and 136c that are used.
  • the extension parts 134a, 134b, 134c may be in close contact with the inside of the groove surfaces 114a, 114b, 114c.
  • the hook portions 136a , 136b , 136c may be disposed in the fastening holes 124a , 124b , 124c formed in the housing body 112 .
  • the rotation guide unit 117 may cause the expansion valve inspection device 100 into which the expansion valve 10 is inserted to rotate around the expansion valve 10 .
  • the rotation guide part 117 is formed to protrude downward from the cover surface 132, and forms a rotation guide part space 138b inward.
  • the rotation guide part space 138b communicates with the rotation guide hole 140 .
  • the user may rotate the expansion valve inspection device 100 by inserting a separate structure into the rotation guide space 138b.
  • the housing 110 is supported by the expansion valve 10 , so that the user can use the rotation guide space 138b in the form of a separate rod.
  • the upper portion of the rotation guide portion 117 is formed with a curved surface portion 138a that expands in the radial direction toward the upper side to facilitate insertion of a separate structure.
  • the expansion valve 10 In the case of the expansion valve 10, it is generally disposed in the inner space of the outdoor unit (not shown). Therefore, since the space for inspecting the expansion valve disposed inside the outdoor unit is limited, the expansion valve inspection device 100 is inserted around the expansion valve 10 in the limited space, and the expansion valve inspection device 100 is easily rotated. For this purpose, a guide part 117 may be disposed.
  • the magnet part 200 is disposed on the guide part 117, and the magnet 210 moves in the direction or the opposite direction in which the insertion space 116a is disposed, and the magnet cover 230 surrounding a part of the magnet 210. ) is included.
  • the magnet 210 may have a substantially rectangular parallelepiped shape.
  • the magnet 210 may include a corner portion 216 in which two surfaces form an inclination angle from one side.
  • the magnet 210 includes an inner portion 218 disposed inside the magnet cover 230 and an exposed portion 211 disposed to be exposed to the outside of the magnet cover 230 .
  • the corner portion 216 is disposed on the exposed portion 211 .
  • the exposed portion 211 includes two surfaces 212 and 214 extending in the longitudinal direction on which the insertion portion 116 is formed, and a corner portion 216 is formed between the two surfaces 212 and 214 . .
  • the two faces 212 and 214 forming the corner portion 216 have an inclination angle. Referring to FIG. 3D , the inclination angle ( ) formed between the two surfaces 212 and 214 formed on the exposed part 211 may be formed vertically. However, this is according to one embodiment, and the inclination angle may be formed within the range of 30 degrees to 150 degrees.
  • the corner portion 216 formed between the two surfaces 212 and 214 formed on the exposed portion 211 may also be formed to be elongated in the direction in which the insertion portion 116 is formed.
  • At least a portion of the exposed portion 211 is disposed inside the insertion space 116a formed by the insertion portion 116 .
  • the corner part 216 is disposed closest to the center of the housing 110 . Accordingly, when the expansion valve 10 is inserted into the insertion space 116a of the insertion part 116 , the corner part 216 may contact the circumferential surface of the expansion valve 10 .
  • the magnet 210 may be a ferrite magnet.
  • the magnet 210 may use the same type of magnet as the magnet rotor 14 disposed inside the expansion valve 10 .
  • the magnet 210 may be composed of one of an N pole and an S pole magnet included in the magnet rotor 14 .
  • the magnet cover 230 may prevent the magnet 210 from coming into contact with components other than the expansion valve 10 .
  • the magnet cover 230 covers the remaining portion except for the exposed portion 211 of the magnet 210 .
  • the magnet cover 230 includes a cover body 231 that covers the magnet 210 and a stopper 238 protruding outward from one end of the cover body 231 to limit the movement in one direction of the magnet unit 200 . ) is included.
  • the cover body 231 forms a space in which the inner part 218 of the magnet 210 is accommodated.
  • An insertion hole 236 into which the magnet 210 is inserted is formed at one side of the cover body 231 .
  • the cover body 231 may include a receiving portion 232 in which the magnet 210 is accommodated, and a locking portion 234 extending to one side from the receiving portion 232 and fixing one end of the magnet 210 .
  • the magnet 210 may be in contact with the surface on which the stopper 238 is formed at one end, and in contact with the engaging portion 234 at the other end, and may be fixedly disposed inside the magnet cover 230 .
  • the engaging portion 234 extends in a direction in which the insertion space 116a is formed in a portion adjacent to the first guide surface 118a among the first guide surface 118a and the second guide surface 118b.
  • the locking part 234 is disposed farther from the center of the housing 110 than the exposed part 211 .
  • the cover body 231 is disposed between the pair of guide parts 117 . Accordingly, the cover body 231 may move along the guide space 120 formed by the pair of guide parts 117 . As the cover body 231 moves along the guide space 120 , the exposed portion 211 of the magnet 210 may move toward the center of the housing 110 or move in the opposite direction.
  • the stopper 238 is disposed in a space formed between the insertion portion 116 and the outer circumferential portion 113 .
  • the stopper 238 is disposed at an end of the cover body 231 and protrudes in a direction perpendicular to a surface formed by the cover body 231 .
  • the stopper 238 is in contact with the ends of the pair of guide parts 117 to limit the movement of the cover body 231 .
  • the expansion valve inspection device by rotating the expansion valve testing device 100 while the expansion valve 10 is inserted into the insertion part 116, it is possible to determine whether the expansion valve 10 is malfunctioning. .
  • the expansion valve inspection apparatus 100 includes an expansion valve 10 having an outer circumference smaller than the diameter of the insertion space 116a formed in the insertion part 116 . It is possible to determine whether there is a malfunction. Accordingly, it is possible to check whether the expansion valves 10 of various sizes are malfunctioning with one expansion valve inspection device 100 .
  • the expansion valve 10 may be disposed inside a limited space of the outdoor unit. Accordingly, it is possible to insert the expansion valve 10 disposed at a fixed position into the insertion space 116a of the expansion valve inspection device 100 .
  • a separate structure in the form of a long bar may be inserted into the rotation guide part 117 of the expansion valve testing device 100 to rotate the expansion valve testing device 100 .
  • the expansion valve inspection device 100 may rotate based on the expansion valve 10 inserted into the insertion space 116a.
  • the edge portion 216 of the magnet 210 may contact the circumferential surface of the expansion valve 10 .
  • the magnet 200 disposed inside the housing 110 also rotates.
  • the magnet rotor 14 disposed inside the expansion valve 10 may also rotate according to the rotation of the magnet unit 200 . However, the magnet rotor 14 rotates as much as the slide ring 30 moving along the spring guide rail 28 can rotate.
  • the magnet rotor 14 rotating along the magnet part 200 rotates by a predetermined range and then stops.
  • the slide ring 30 has already rotated as much as it can move along the spring guide rail 28, even if the expansion valve inspection device 100 rotates in one direction, the magnetic rotor 14 will not rotate.
  • the magnet rotor 14 rotating along the magnet part 200 rotates by a certain range and then stops. In a state in which the slide ring 30 has already rotated as much as it can move along the spring guide rail 28, even if the expansion valve inspection device 100 rotates in the other direction, the magnet rotor 14 may not rotate. .
  • the magnet rotor 14 does not rotate, so the magnet unit 200
  • the corner portion 216 of the is rotated around the fixed magnet rotor (14). At this time, the corner portion 216 alternately passes through the N pole 14a and the S pole 14b of the magnet rotor 14 .
  • the magnet 210 of the magnet part 200 is formed with the same pole as any one of the N pole 14a and the S pole 14b.
  • the magnet portion 210 is in contact with the circumferential surface of the expansion valve 10 at the same pole among the N pole 14a and the S pole 14b, and the other of the N pole 14a and the S pole 14b Since the poles are spaced apart from the circumferential surface of the expansion valve 10 , noise and vibration may occur in the expansion valve inspection apparatus 100 due to a pole jumping phenomenon of the magnet.
  • the expansion valve inspection device 100 is rotated around the expansion valve 10 to determine whether the expansion valve 10 is faulty. That is, while the expansion valve 10 is inserted into the insertion part 116 of the housing, the expansion valve inspection device 100 is rotated a plurality of times in one direction, and the expansion valve inspection device 100 is rotated a plurality of times in the other direction. During the rotation process, it is possible to determine whether or not the expansion valve 10 is malfunctioning based on the occurrence and timing of noise and vibration generated by the expansion valve inspection device 100 .
  • noise and vibration are not generated at the initial stage of rotation of the one-way rotation, and noise and vibration are generated from the expansion valve inspection apparatus 100 when the rotation is over a certain range.
  • noise and vibration do not occur at the initial stage of rotation in the other direction, and noise and vibration are generated in the expansion valve inspection apparatus 100 when the rotation is over a certain range. This is because, at the initial stage of rotation, the magnet rotor 14 rotates along the edge portion 216 of the magnet 210 .
  • the expansion valve inspection device continuously when the expansion valve inspection device 100 rotates in one direction or in the other direction. At (100), noise and vibration occur.
  • the magnetic rotor 14 can be continuously rotated, so the expansion valve inspection apparatus 100 No noise and vibration are generated in the expansion valve inspection device 100 even when the rotation of the

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Temperature-Responsive Valves (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Details Of Valves (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)

Abstract

La présente invention concerne un dispositif d'inspection de détendeur. Le dispositif d'inspection de détendeur de la présente invention comprend : un boîtier comprenant une partie d'insertion destinée à former un espace d'introduction dans lequel est introduit un détendeur dans lequel est disposé un rotor magnétique ; et une partie aimant disposée de façon à être mobile à l'intérieur du boîtier, la partie aimant étant disposée de façon à être mobile dans la direction qui est verticale par rapport à la direction dans laquelle le détendeur est introduit, et la partie aimant comprend une partie bord faisant saillie dans la direction dans laquelle la partie d'introduction est disposée, de façon à venir en contact avec la surface circonférentielle extérieure du détendeur introduit dans la partie d'introduction.
PCT/KR2020/001084 2020-01-22 2020-01-22 Dispositif d'inspection de détendeur WO2021149847A1 (fr)

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PCT/KR2020/001084 WO2021149847A1 (fr) 2020-01-22 2020-01-22 Dispositif d'inspection de détendeur
KR1020227025633A KR20220126732A (ko) 2020-01-22 2020-01-22 팽창밸브 검사장치

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KR102532132B1 (ko) * 2023-03-03 2023-05-15 한전케이피에스 주식회사 대형 밸브의 접촉면 검사기구 및 검사방법

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US20070222438A1 (en) * 2006-03-23 2007-09-27 Dale Reeves Electromagnetic flaw detection apparatus for inspection of a tubular
JP2009133795A (ja) * 2007-12-03 2009-06-18 Tgk Co Ltd 組み込み膨張弁の漏れ検査方法
KR101330182B1 (ko) * 2012-05-23 2013-11-15 그린산업 주식회사 전자식 팽창 밸브의 구동부 검사장치 및 검사방법
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US20070222438A1 (en) * 2006-03-23 2007-09-27 Dale Reeves Electromagnetic flaw detection apparatus for inspection of a tubular
JP2009133795A (ja) * 2007-12-03 2009-06-18 Tgk Co Ltd 組み込み膨張弁の漏れ検査方法
KR101330182B1 (ko) * 2012-05-23 2013-11-15 그린산업 주식회사 전자식 팽창 밸브의 구동부 검사장치 및 검사방법
CN206573279U (zh) * 2017-01-03 2017-10-20 权星精机（上海）股份有限公司 膨胀阀检测台

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