KR20170049867A - The cutting machine for a power plant valve - Google Patents

The cutting machine for a power plant valve Download PDF

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Publication number
KR20170049867A
KR20170049867A KR1020150150725A KR20150150725A KR20170049867A KR 20170049867 A KR20170049867 A KR 20170049867A KR 1020150150725 A KR1020150150725 A KR 1020150150725A KR 20150150725 A KR20150150725 A KR 20150150725A KR 20170049867 A KR20170049867 A KR 20170049867A
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KR
South Korea
Prior art keywords
shaft
casing
cutting
fixed
hole
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KR1020150150725A
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Korean (ko)
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KR101819974B1 (en
Inventor
맹다해
Original Assignee
주식회사 동방브이앤티
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Priority to KR1020150150725A priority Critical patent/KR101819974B1/en
Publication of KR20170049867A publication Critical patent/KR20170049867A/en
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Publication of KR101819974B1 publication Critical patent/KR101819974B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/02—Milling surfaces of revolution
    • B23C3/05—Finishing valves or valve seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • B23C1/20—Portable devices or machines; Hand-driven devices or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/02—Milling surfaces of revolution
    • B23C3/05—Finishing valves or valve seats
    • B23C3/051—Reconditioning of valve seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Abstract

The present invention relates to a cutting and processing device for a power plant valve. The cutting and processing device comprises: a base body part in which a cylindrical body casing eccentrically fixed on the top surface part of a head part of a valve to be cut and processed and having open top and bottom sides is disposed and a worm gear rotated by an operation handle is installed at the top of the outer surface of the body casing; a rotation body part in which a cylindrical rotation body coupled with the inside of the body casing to be rotated is disposed, a penetration hole vertically punched in the rotation body is formed as a laterally long through-hole, and a worm wheel is fixed on the top outer circumferential surface of the rotation body to be rotated by being geared with the worm gear; a diameter adjusting part in which a guiderail member fixed to the top of the rotation body is disposed, a guide block is guided and coupled with the top surface of the guiderail member to be laterally moved, an axis casing penetration pipe is fixed in a vertical upward direction on the central part of the guide block, and a lateral position of the guide block is adjusted according to the diameter of a seatring; an ascending and rotating part in which an axis casing is disposed to have a longitudinally long shape and to have a height longitudinally adjusted by penetrating through the axis casing penetration pipe and the penetration hole of the rotation body and a rotation axis is installed in the axis casing to rotate by receiving driving force from a driving motor; and a cutting and processing part in which a cutting axis connected with the bottom of the axis casing and rotated by receiving driving force transferred from the rotation axis is disposed and a cutting bit for cutting and processing a seatring is formed to downwardly protrude on the bottom of the cutting axis.

Description

[0001] The present invention relates to a cutting apparatus for a power plant valve,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cutting apparatus which can easily mount a new seat ring by simply cutting a damaged seat ring when the seat ring is worn or damaged in an openable and closable valve installed in a piping line of various power plants, A main body casing having a cylindrical upper and lower main body casing fixedly installed concentrically on an upper surface of a head part of a valve to be cut; a base body part having a worm gear mounted on an upper side of an outer surface of the main casing, A through hole formed vertically through the inside of the rotating body is formed as a long elongated hole in the left and right direction and a worm wheel is fixed to the outer circumferential surface of the upper part of the rotating body, A rotating body portion rotated while being bitten, and a guide rail member fixedly installed on the rotating body portion And an axial casing pipe is vertically upwardly fixed to a center portion of the guide block so that the guide bolt is coupled to both the left and right sides of the guide rail member, And a shaft casing extending vertically and vertically through the through-holes of the shaft casing tube and the rotary body. The shaft casing is provided with a through- And a cutting shaft which is connected to a lower portion of the shaft casing and is rotated by receiving a driving force from the rotary shaft, and a seat ring is cut at a lower portion of the cutting shaft. And a cutting edge protruding downwardly from a cutting bit to be machined. Beuyong relates to a cutting device.

Generally, in various power plants, a large amount of water or fuel has been used to start and control power generation facilities. In such facilities, it is necessary to install a pipeline for transferring water or fuel through large pipes or conduits In order to control the flow of the fluid, a large number of large opening / closing valves having the form of a check valve or the like is installed in the piping line.

The opening / closing valve of the power plant has a diaphragm integrally formed with a drain hole therein, and a disk member for opening and closing the drain hole of the diaphragm is lifted and lowered in accordance with the rotation of the handle mounted on the head portion. The seat ring is fixedly installed on the inner circumferential surface of the discharge hole of the diaphragm so that the disc valve and the seat ring come into close contact with each other to prevent water leakage. However, since the disc valve is repeatedly opened and closed by the disc member for a long time, In this case, it is difficult to remove only the existing seat ring which is conventionally fixedly attached to the inner circumferential surface of the drain hole from the diaphragm of the valve, so that it is difficult to remove the entire opening / closing valve To a new one. With prolonged action to remove the entire valve from the valve when the line increases maintenance costs for reinstallation and reinstallation there is a problem that this causes major problems in the development function.

As a conventional technique for solving the above problems, Korean Patent Registration No. 10-0372272 discloses an apparatus for replacing a worn metal ring incorporated in a fluid flow opening / closing valve at a predetermined position, A discharge machining electrode which is formed in a two-step circular disk shape so as to cut the workpiece by electric discharge machining by applying (+) electric charge to the workpiece; First positioning means for horizontally moving and controlling the position of the discharge machining electrode in the X-axis direction; Second positioning means for horizontally moving and controlling the position of the machining electrode in the Y-axis direction; Third positioning means for vertically moving and controlling the position of the machining electrode in the Z-axis direction; Fourth positioning means for controlling the position of the machining electrode so as to repeat the progressive approach and retreat operation in the C-axis direction; A head motor assembly for transmitting a rotational force by a belt and a pulley so that the working electrode can approach and retract in a C-axis direction with respect to the workpiece while rotating; Welding means after the cutting process, the assembly with the welding torch and welding wire integrated therewith intended to weld between the annular contact surface of the new ring and the valve body; And a motor for applying the electric current to the electric discharge machining electrode from an external power source and for driving the first, second, third and fourth orienting means, the head portion motor assembly, the welding means, Disclosed is a metal ring replacement device incorporated in a fluid opening / closing valve composed of an external control device for remotely controlling operation.

However, in the above-mentioned prior art, only a valve equipped with a seat ring having a specified size and diameter is formed in a two-step disk shape so that the discharge machining electrode can cut the predetermined inner diameter of the ring, It is not applicable to a valve equipped with a seat ring having a thickness, an inner diameter and an outer diameter. Moreover, since the entire apparatus is placed separately from the valve, only the discharge machining electrode is inserted into the valve, The valve is moved by the impact and vibration during the machining process, and the discharge machining electrode is not brought into close contact with the seat ring, so that the machined surface is not smooth and uniform.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a valve head of a power plant to be cut with a cylindrical main body casing fixedly installed concentrically on an upper surface thereof, A guide rail member is fixed to an upper portion of the rotary body, and an axial casing pipe is vertically upwardly fixed to a guide block provided on an upper portion of the guide rail member so as to move left and right, And the shaft casing vertically penetrated through the shaft casing pipe and the through hole is rotated in the left and right position according to the inner and outer diameters of the valve seat ring while the shaft casing is adjusted up and down The valve is connected to the lower portion of the shaft casing according to the position and thickness of the seat ring mounted on the inner side of the valve It is an object to the processing of the cutting bit is stable in a fast, easy cutting operation to remove a variety of size and thickness of the seat ring, and in a valve having an outer diameter by a height adjustment so as to abut to the seat ring.

In order to achieve the above object, a valve main body casing having upper and lower portions opened and fixed concentrically on an upper surface of a head portion of a valve to be cut is provided, and a worm gear, And a through hole formed vertically through the inside of the rotating body is formed as a long hole in the right and left direction and a worm wheel is formed on the outer circumferential surface of the rotating body in the left and right direction, And a guide rail member fixedly installed on an upper portion of the rotary body. The upper surface of the guide rail member is guided and guided so that the guide block is moved left and right, and the center portion of the guide block An axial casing pipe is fixedly installed vertically upward, and both sides of the guide rail member A diameter adjuster for adjusting the left and right positions of the guide block in accordance with the seat ring diameter of the valve, respectively, and an adjustable bolt for adjusting the vertical height of the guide block through the through- And a cutting shaft which is connected to a lower portion of the shaft casing and is rotated by receiving a driving force from the rotating shaft, is provided in the inside of the shaft casing and is provided with a rotating shaft which is rotated by receiving a driving force from a driving motor And a cutting bit for cutting the seat ring is protruded downward at a lower portion of the cutting shaft.

As described above, according to the present invention, there is provided a cylindrical main body casing fixedly installed on a top surface of a valve head of a power plant to be cut, a rotating body rotatably installed on the inside of the main casing, In the guide block, which is fixedly installed on the upper portion of the guide rail member, a shaft casing pipe is vertically fixed to the guide block, and the through hole is formed in the left and right long holes The shaft casing vertically penetrating through the axial casing pipe and the through hole is rotated in the left and right position according to the inner and outer diameters of the valve seat ring so that the axial casing is adjusted up and down, Depending on the position and thickness of the ring, the cutting bit of the cutting tool, which is connected to the lower part of the shaft casing, Height-adjustable so as to abut on Tring whereby there is an effect that the cutting surface can be uniformly machined smooth and reliable easily machined in a short time the seat ring in various sizes and thickness, and within, the valve having an outer diameter.

1 is a front schematic view of a cutting apparatus for a power plant valve according to the present invention;
2 is a longitudinal sectional schematic view showing an exploded state of a cutting apparatus for a power plant valve according to the present invention;
3 is a longitudinal sectional schematic view showing an assembled state of a cutting apparatus for a power plant valve according to the present invention
4 is a schematic cross-sectional view taken along line A-A '
5 is a schematic cross-sectional view taken along line B-B '
Fig. 6 is a schematic longitudinal sectional view of a state in which a cutting edge of a cutting tool for a power plant valve according to the present invention is enlarged
7 is a schematic view of a longitudinal section of a cutting block of a power plant valve according to the present invention in a state in which a guide block of the cutting apparatus is moved to the right,
8 is a schematic cross-sectional view of a state in which a cutting tool for a power plant valve according to the present invention is installed in a concentric circle on a top surface of a head portion of a bail and a cutting bit is installed at a turning radius corresponding to the inner diameter of the seat ring,
FIG. 9 is a perspective view showing a state in which the cutting block of the power plant valve according to the present invention is fixed concentrically to the upper surface of the head portion of the bail, and the guide block is gradually moved to the left by the width of cutting of the seat ring, Sectional view of a state in which the elevating and lowering pivoting portion is moved downward in accordance with the thickness of the seat ring to be cut

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

The cutting apparatus 1 for a power plant valve according to the present invention includes a seat ring 7 damaged during wear and damage of the seat ring 7 of the openable and closable valve 3 installed in a piping line of various power plants as shown in Figs. The upper and lower portions fixed concentrically on the upper surface portion of the head portion 4 of the valve 3 to be cut, A base body portion 2 provided with a cylindrical main body casing 5 provided with a cylindrical main body casing 5 provided with a worm wheel 11 rotatably operated by an operation handle 12 on the outer side surface of the main body casing 5, And a through hole 15 formed vertically in the rotating body 14 is formed as a long elongated hole in the left and right direction and a through hole 15 formed in the rotating body 14 A worm wheel 16 is fixedly mounted on the upper peripheral surface of the worm gear 11, And a guide rail member 19 fixed to the upper portion of the rotary body 14. The guide block 20 is guided by the upper surface of the guide rail member 19, An axial casing pipe 25 is vertically upwardly fixed to a center portion of the guide block 20 and an adjusting bolt 21 is coupled to both the left and right sides of the guide rail member 19, A diameter adjusting section 18 for adjusting the left and right positions of the guide block 20 according to the diameter of the ring 7 and a through hole 15 (see FIG. 1) of the shaft casing pipe 25 and the rotating body 14, A lifting and rotating unit 33 provided inside the shaft casing 34 and provided with a rotating shaft 36 that is rotated by receiving driving force from the driving motor 35 is provided inside the shaft casing 34. [ A shaft casing 34 connected to the lower portion of the shaft casing 34, 45 is provided and configured to jeolsakga study (44) provided protruding the lower portion of the cutting shaft 45. The cutting bit (46) for cutting the sheet ring 7 downward.

As shown in FIGS. 1 to 5, 7, 8 and 9, the base body part 2 is provided on the upper surface of the openable and closable valve 3 installed on the piping line of the power plant to be cut, A main body casing 5 fixed to the top surface of the head portion 4 of the valve 3 to be cut and having a top and bottom open and fixed concentrically is provided, And a worm gear 11 rotatably operated by an operation handle 12 is installed on the outer side surface of the main body casing 5. The mounting flange 6 horizontally positioned on the bottom surface of the main casing 5 is detached And the mounting flange 6 is machined so as to have the same inner diameter as the outer diameter of the head portion 4 of the opening and closing valve 3 installed in the piping line of various power plants as shown in Figs. (4) of the various valves (3) The outer circumferential surface of the mounting flange 6 is assembled in a state in which the center of the mounting flange 6 is aligned with the bottom face of the main casing 5 in a state in which the inner and outer diameters of the mounting flange 6 are processed in accordance with this, The base body portion 2 is concentrically formed so as to coincide with the center of the valve 3 in a state where the base body portion 2 is perpendicular to the upper face portion of the head portion 4 of the valve 3, After the cutting operation of the seat ring 7 of the valve 3 is completed, the welded portion of the mounting flange 6 and the head portion 4 of the valve 3 is removed, (1) from the valve (3).

The openable and closable valve 3 is inserted into the upper portion of the head portion 4 and is inserted into a damaged sheet ring 3 inside the valve 3 in a state where a disk member (not shown) The cutting processing of the cutting tool 7 is performed.

One or a plurality of rotating body bearings 8 are provided at regular intervals on the inner circumferential surface of the main body casing 5 and a rotating body 14 penetrates inside the rotating body bearing 8 A worm gear mounting base 9 is fixed to one side of the outer circumferential surface of the main body casing 5 and a gear shaft 10 is rotatably installed on the upper portion of the worm gear mounting base 9 in the front- The worm gear 11 is integrally formed on the outer circumferential surface of the shaft 10 and an operation handle 12 is connected to one end of the gear shaft 10 so that the operation handle 12, The worm wheel 11 is rotated so that the worm wheel 16 of the rotating body 14, which is engaged with the worm gear 11, is driven to rotate.

1 to 5, 7, 8, and 9, the rotating body 13 is rotated together with the lifting / lowering pivoting portion 33, which is inserted through the inside of the rotating body portion 13, so that the inner peripheral surface of the seat ring 7 of the valve 3 A cylindrical rotating body 14 rotatably coupled to the inside of the main body casing 5 is provided as a portion for cutting the workpiece 44 by the cutting head 44, And the worm wheel 16 is fixedly mounted on the outer circumferential surface of the upper portion of the rotating body 14 so as to be rotated while being meshed with the worm gear 11. The rotating body 14 has a through hole 15, (14) is vertically penetrated and rotatably installed inside the rotating body bearing (8) provided on the inner circumferential surface of the main casing (5), and the upper portion is rotatably installed on the upper portion of the main casing The worm wheel 16 is integrally fixed to the outer peripheral surface of the boss, The worm wheel 16 is meshed with the worm gear 11 of the main body part 2 when the worm gear 11 is rotated by the operation handle 12 in a state of being engaged with the worm gear 11 so that the rotating body 14 is rotated integrally And a male screw part is formed on the outer circumferential surface of the lower end part of the rotating body 14 so that the finishing nut 17 is screwed from below and tightly supported on the inner surface of the bottom part of the rotating body bearing 8, The flow and rotating body 14 is prevented from slipping out to the upper side of the main casing 5.

As shown in FIG. 5, the through-hole 15 has an elongated left-right length longer than the longitudinal length of the through-hole 15. The through-hole 15 has an axial length corresponding to the longitudinal length of the through- The casing 34 is vertically movably inserted along the through hole 15 so as to be movable in the left and right direction.

The diameter adjusting portion 18 adjusts the left and right positions of the lifting and rotating pivot portion 33 according to the diameter of the seat ring 7 to be cut as shown in Figs. 1 to 5, 7, 8 and 9, A guide rail member 19 fixed to the upper portion of the rotary body 14 is provided at the upper portion of the guide rail member 19 and a guide block 20 An axial casing pipe 25 is fixed vertically upward in a central portion of the guide block 20 and an adjustment bolt 21 is coupled to the left and right sides of the guide rail member 19, The guide rail member 19 is fixed horizontally and integrally fixed to the upper portion of the rotating body 14 by adjusting the left and right positions of the guide block 20 according to the diameter of the seat ring 7. [ And a rotating body 14 is provided at the center thereof. The upper communication hole 22 having the same size and shape as the through hole 15 of the guide rail member 19 is perforated so that the through hole 15 and the upper communication hole 22 are vertically communicated, On the upper surface portion, rail grooves 23 are formed horizontally on both front and rear sides so that the guide blocks 20 are guided between the front and rear side rail grooves 23 in a mutually guided manner and are moved left and right. The right and left adjusting bolts 21 are horizontally positioned in the center of the left and right bolt fastening pieces 24 so as to penetrate the left and right horizontal adjusting bolts 21, 7 and 9, the right and left positions of the guide block 20 are adjusted as the left and right adjusting bolts 21 are loosened or tightened, The turning radius of the cutting pawl 44 connected to the lower portion of the elevating pivoting portion 33 is adjusted so as to be enlarged or reduced in accordance with the diameter of the seat ring 7, .

The shaft casing pipe tube 25 is vertically upwardly inserted through the center of the guide block 20 so as to be integrally fixed to the guide block 20 and is moved laterally together with the guide block 20, And the outer casing has one or a plurality of arc-shaped cut-out portions 26 formed therein, so that each of the cut-out portions (the inner cut- 26, the shaft casing tightening hole 27 is tightly fixed to the outer peripheral surface of the shaft casing 34 passing through the inside of the shaft casing pipe 25, The shaft casing tightening hole 27 is formed in the shape of an arc metal band conforming to each cutout portion 26 and has an inner circumferential surface formed with a rubber pad 29 2 and 3, When the shaft casing tightening hole 27 is assembled to each cutout portion 26 by a normal bolt or the like, the contact pad 29 comes into close contact with the outer peripheral surface of the shaft casing 34, Thereby preventing flow.

The flange plate 30 is fixed to the outer surface of the upper surface of the shaft casing pipe 25 and the gear box 31 is fixed to the upper surface of the flange plate 30. And is meshed with a rack-shaped gear 39 formed on the upper and lower straight lines along the outer circumferential surface of the shaft casing 34 while gear-driven by the drive shaft 32 in a state where a plurality of gears are built therein. The rack shaft 39 of the shaft casing 34 and the gear box 31 are driven in gear while the drive shaft 32 of the gear box 31 is rotated in the forward and reverse directions, 3, the cutting bit 46 of the cutting groove 44 is positioned at the mounting position of the seat ring 7 provided on the diaphragm 28 of the seat ring 7, 44 are cut and machined while adjusting the cutting bit 46.

As shown in Figs. 1 to 9, the elevating / lowering pivoting portion 33 is moved up and down according to the installation position of the seat ring 7 provided on the valve 3 and the thickness of the seat ring 7, And a shaft casing 34 which is vertically and vertically arranged and which is installed to be adjustable in height through the shaft casing pipe 25 and the through hole 15 of the rotating body 14 And a rotary shaft 36 rotatable by receiving a driving force from a driving motor 35 is installed inside the shaft casing 34. The shaft casing 34 is a circular tube whose upper and lower portions are open, And is adapted to protrude to the outside of the lower portion of the main casing 5 through the shaft casing pipe 25 and the through hole 15 of the rotating body 14, Shaft bearings 37a and 37b are provided on the inner side of the shaft bearings 37a and 37b, The motor mounting plate 38 is horizontally fixed to the upper surface of the shaft casing 34 and the motor mounting plate 38 is provided with a driving motor 35 So that the driving force is transmitted to the rotary shaft 36.

The shaft casing 34 is formed with an upper and lower rails 39 on the outer circumferential surface thereof and a rake holder 39 is fixed to the flange plate 30 of the shaft casing pipe 25, The drive shaft 32 provided in the gear box 31 is rotated by the gear box 31 so as to rotate the gear box 31 in the forward and reverse directions by means of an ordinary socket wrench or spanner, And the elevating / lowering pivoting portion 33 is operated to be elevated and lowered while being driven.

The rotary shaft 36 is inserted into the shaft bearings 37a and 37b of the shaft casing 34 so that the upper and lower ends of the shaft shaft 34 protrude outward from the shaft casing 34 The upper driven pulley 40a is connected to the driving pulley 41 provided on the shaft of the driving motor 35 by a belt or the like and the lower driven pulley 40b is connected to the driving pulley 41 44 is connected to a connecting pulley 48 axially provided at the upper end of the cutting shaft 45 so that a driving force from the driving motor 35 is transmitted to the cutting shaft 45 through the rotary shaft 36 .

7, the lifting and lowering unit 33 is mounted on the upper portion of the motor mounting plate 38 fixed to the upper surface of the shaft casing 34, And a drive motor 35 is fixedly mounted on the upper surface of the mount table 42 in a vertically downward direction and the shaft of the drive motor 35 is connected to the upper end of the rotary shaft 36 and the coupler 43 To directly receive the driving force.

1 to 4, 6, 7, 8, and 9, the cutting groove 44 is a portion for cutting and removing the seat ring 7 of the valve 3, And a cutting bit 45 for rotating the seat ring 7 is provided at a lower portion of the cutting shaft 45. The cut bit 45 is formed at a lower portion of the cutting shaft 45, And the cutting edge 44 is provided with a cutting housing 47 fixed to the lower end of the shaft casing 34 by a plurality of bolts and is vertically cut on one side of the cutting housing 47 A shaft 45 is rotatably inserted through the cutting shaft 45 and a connecting pulley 48 is installed at the upper end of the cutting shaft 45. A pulley mounting groove 49 is formed at an upper portion of the cutting housing 47, The connecting pulley 48 of the lower driven pulley 40b and the cutting shaft 45 axially installed at the lower end of the pulley 36, 49 is such that the driving force from the connection pivot axis 36 via a conventional belt or the like in the state positioned on the inner side rotation is transmitted to the cutting axis (45).

The cutting shaft 45 is installed so that its lower portion penetrates the cutting housing 47 and protrudes outward to the lower side and a cutting bit 46 having a plurality of cemented carbide pieces or diamond pieces is fixed to the lower end of the cutting axis 45, The cutting bit 46 is rotated at high speed together with the rotation of the cutting shaft 45 as shown in FIG. 8, so that the wear and damage of the seat ring 7 is cut from the inner diameter side to the outer diameter side to be removed As the rotating body 14 of the rotating body 13 is rotated, the lifting and rotating unit 33 is rotated around the center of the rotating body 14 and the cutting workpiece 44 is rotated together with the rotating body 14 The inner diameter portion of the seat ring 7 abutting within the turning radius of the cutting bit 46 is cut and machined while the cutting bit 46 is being revolved with the turning radius corresponding to the inner diameter of the seat ring 7, The drive shaft 3 of the gear box 31 2 is rotated to move the lifting and lowering pivoting portion 33 downward by a certain distance so as to vertically cut the inner diameter portion of the seat ring 7 having a certain thickness. After the inner diameter portion of the seat ring 7 is vertically cut, the guide block 20 is moved in the left and right direction by a predetermined distance as shown in FIG. 9 so as to enlarge the turning radius of the cutting groove 44 The seat ring 7 is gradually machined from the inner diameter side to the outer diameter side by a predetermined width.

Hereinafter, the operation of the present invention will be described.

In the case where the seat ring 7 damaged by abrasion of the opening and closing valve 3 installed in the piping line of various power plants is cut and processed by using the power plant valve cutting processing apparatus 1 according to the present invention, A disk member (not shown) which is lifted and lowered by a handle provided on the head portion 4 of the valve 3 to be subjected to the cutting processing is removed and the head portion 4 of the valve 3, The mounting flange 6 processed to have the inside and outside diameters in accordance with the outside diameter is assembled horizontally with the center of the main casing 5 on the lower face portion of the main casing 5 through a plurality of bolts, The base body portion 2 coincides with the center of the valve 3 in a state where the base body portion 2 is orthogonal to the upper face portion of the head portion 4 of the valve 3 in such a manner that the head portion 4 of the valve 3 is partially welded. So that it is fixedly installed in a concentric circle.

Next, the drive shaft 32 of the gear box 31 provided on the flange plate 30 of the diameter adjuster 18 is rotated forward to rotate the gear box 31 and the raising and lowering shaft 33 of the gear- The cutting edge 46 of the cutting edge 44 is lowered to a height corresponding to the seat ring 7 of the diaphragm 28 provided inside the valve 3, The left and right adjusting bolts 21 of the diameter adjusting portion 18 are loosened or tightened to adjust the left and right positions of the guide block 20 to move along the through holes 15 of the rotating body 14 The left and right positions of the lift and pivot portion 33 are adjusted together so that the lower end of the cutting bit 46 is positioned to abut the upper end of the inner circumference of the seat ring 7 and then the drive motor 35 is operated, And the driving force from the rotating shaft 36 is transmitted to the cutting axis 45 so that the cutting bit 46 is rotated and the sheet ring 7 abutting on the cutting bit 45 is cut The operation handle 12 of the worm gear mounting base 9 provided on one side of the outer circumferential surface of the main body casing 5 is rotated in the forward and reverse directions to rotate the worm gear 11 in the rotational body 14 The worm wheel 16 is rotated and driven so that the rotary body 14 is rotated and the elevating and rotating portion 33 penetrating the inside of the rotary body 14 rotates about the central portion of the rotary body 14, The cutting bit 46 of the seat ring 7 is revolved at the same turning radius along the inner diameter of the seat ring 7 at the same time as the rotation of the seat ring 7 and the inner peripheral surface of the seat ring 7 is cut into a certain thickness and width.

After the inner diameter portion of the seat ring 7 abuts within the turning radius of the cutting bit 46 as described above, the driving shaft 32 of the gear box 31 is rotated forward to rotate the lifting / The cutting bit 46 of the cutting edge 44 is rotated to revolve through the rotary body 14 so as to vertically cut the inner diameter portion of the seat ring 7 having a certain thickness, 9, the guide block 20 is moved by a predetermined distance in the left and right direction to cut the cutting edge 44, as shown in FIG. 9, after the inner diameter portion of the seat ring 7, which abuts within the radius of rotation of the bit 46, The seat ring 7 is gradually cut by a predetermined width from the inner diameter side to the outer diameter side so as to completely cut off the seat ring 7 fixedly mounted on the diaphragm 28 of the valve 3 do.

After the seat ring 7 of the valve 3 is cut off, the mounting flange 6 welded to the head portion 4 of the valve 3 is removed, The new seat ring 7 is fixedly mounted on the diaphragm 28 of the valve 3 and the maintenance work of the valve 3 is completed.

1. Cutting device for power plant valve 2. Base body part
3. Valve 4. Head
5. Body casing 6. Mounting flange
7. Seat ring 8. Rotating body bearing
9. Worm gear mount 10. Gear shafts
11. Worm gear 12. Operating handle
13. Rotating body 14. Rotating body
15. Through ball 16. Worm wheel
17. Finishing nut 18. Diameter control section
19. Guide rail member 20. Guide block
21. Adjustment bolt 22. Upper communication hole
23. Rail groove 24. Bolt connection
25. Axial casing pipe clearance 26. Cutting section
27. Axis casing tightening port 28. Diaphragm
29. Adhesive pad 30. Flange plate
31. Gear box 32. Drive shaft
33. Lifting and lowering shaft 34. Axial casing
35. Driving motor 36. Shaft
37a, 37b. Shaft bearing 38. Motor mounting plate
39. Rai size 40a, 40b. Driven pulley
41. Drive pulley 42. Cradle
43. Coupler 44. Cutting edge
45. Cutting axis 46. Cutting bits
47. Cutting housing 48. Connecting pulley
49. Pulley mounting groove

Claims (7)

A tubular main body casing 5 having upper and lower portions opened and fixed concentrically with the upper surface of the head portion 4 of the valve 3 to be cut is provided. A base body portion 2 provided with a worm gear 11 rotatably operated by a rotating body 14 and a cylindrical rotating body 14 rotatably coupled to the inside of the body casing 5, The through hole 15 is formed with a long hole extending vertically through the inside of the rotating body 14 and a worm wheel 16 is fixed to the outer circumferential surface of the rotating body 14 to rotate the worm gear 11 And a guide rail member 19 fixed to the upper portion of the rotary body 14 and a guide block 20 is guided on the upper surface of the guide rail member 19 so as to be moved left and right, An axial casing pipe 25 is vertically upwardly fixed to the center of the valve 3 A diameter adjusting portion 18 for adjusting the left and right positions of the guide block 20 according to the diameter of the seat ring 7 of the shaft casing 20, A shaft casing 34 which is installed so as to be height-adjustable through the hole 15 and in which a rotary shaft 36 which is rotated by receiving a driving force from a driving motor 35 is provided inside the shaft casing 34, And a cutting shaft 45 connected to a lower portion of the shaft casing 34 and rotated by receiving a driving force from the rotating shaft 36. A sheet ring 7 is disposed below the cutting shaft 45, And a cutting edge (44) provided so that a cutting bit (46) to be cut is protruded downward.
2. The rotary compressor according to claim 1, wherein one or a plurality of rotary body bearings (8) are installed on the inner circumferential surface of the main casing (5) at regular intervals and the rotary body (14) A worm gear mounting base 9 is fixed to one side of the outer circumferential surface of the main body casing 5 and a gear shaft 10 is rotatably installed on the upper side of the worm gear mounting base 9, The worm gear 11 is rotatably and rotatably connected to the worm gear 11. The worm gear 11 is rotatably and rotatably connected to the worm gear 11 at one end of the worm gear 10 And the worm wheel (16) of the rotating body (14), which is gear-engaged with the worm wheel (11), is rotationally driven.
3. The rotary compressor according to claim 1 or 2, wherein the rotary body (14) is vertically penetrated through the inside of a rotary body bearing (8) provided on the inner circumferential surface of the body casing (5) 5, a worm wheel 16 is integrally fixed to an upper outer circumferential surface protruding from the upper end portion of the rotary body 14, and a male screw portion is formed on the outer circumferential surface of the lower end portion of the rotary body 14, And the through hole 15 has an outer diameter that is longer than the longitudinal length and has an elongated shape that is longer than the longitudinal length and conforms to the longitudinal length of the through hole 15 Wherein the cylindrical shaft casing (34) is installed so as to be movable laterally along the through hole (15) in a state where it penetrates vertically through the inside of the through hole (15).
2. The apparatus according to claim 1, wherein the guide rail member (19) is horizontally positioned and fixed to the upper part of the rotating body (14) and rotates together with the through hole (15) of the rotating body An upper communication hole 22 having the same size and shape is perforated so as to be vertically communicated. A rail groove 23 is horizontally formed on both front and rear sides of the upper surface portion of the guide rail member 19 so that front and rear side rail grooves 23 The left and right bolt fastening pieces 24 are fixed to the left and right sides of the guide bolt 21 by bolts 21, And the right and left positions of the guide block 20 are adjusted as the left and right adjusting bolts 21 are loosened or tightened, The upper left (33) And the valve is adjusted together.
The shaft casing pipe (1) according to claim 1, wherein one or a plurality of arc-shaped cut-out portions (26) are formed on the outer side surface of the shaft casing pipe The shaft casing tightening hole 27 is tightly supported on the outer circumferential surface of the shaft casing 34 passing through the inside of the shaft casing pipe 25 so as to prevent the shaft casing 34 in the height- The shaft casing tightening unit 27 is formed in the shape of a metal bell in the shape of an arc conforming to each cutout portion 26. A rubber pad 29 is fixedly attached to the inner circumferential surface of the shaft casing tightening unit 27, Is tightened to each cutout portion (26) so that the contact pads (29) abut against the outer circumferential surface of the shaft casing (34) so as to prevent upward and downward flow of the shaft casing (34) Cutting device.
The bearing device according to any one of claims 1 to 5, wherein the shaft casing (34) is a circular tube having upper and lower openings, and axle bearings (37a) and (37b) And a rotary shaft 39 is formed on the outer circumferential surface of the shaft casing 34 in an up and down straight line. The rotary shaft 39 is fixed to the shaft casing 34, The gear box 31 fixed to the flange plate 30 provided on the upper surface portion of the pipe tube 25 and the drive shaft 32 provided on the gear box 31 are gear- (33) is lifted and lowered while the rack (39) is gear driven by the spring (31).
The cutting insert according to claim 1, wherein the cutting groove (44) has a cutting housing (47) fixed to the lower end of the shaft casing (34) by a plurality of bolts, A connecting pulley 48 is provided at the upper end of the cutting shaft 45 and a pulley mounting groove 49 is formed at an upper portion of the cutting housing 47 so that the rotary shaft 36 The lower pulley 40b and the connecting pulley 48 of the cutting shaft 45 are connected to each other through a belt in a state in which the lower pulley 40b is located inside the pulley mounting groove 49, And the driving force is transmitted to the cutting shaft (45) and rotated.
KR1020150150725A 2015-10-29 2015-10-29 The cutting machine for a power plant valve KR101819974B1 (en)

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CN108296735A (en) * 2018-01-30 2018-07-20 重庆市长寿区惠峰汽车修理有限公司 Auto parts machinery winding device
CN108673168A (en) * 2018-07-26 2018-10-19 郑莹 A kind of special waterwheel for processing profiled limb valve
CN114206054A (en) * 2021-12-10 2022-03-18 深圳市芯杰矽科技有限公司 Integrated equipment of fully integrated high-reliability integrated circuit
CN115179093A (en) * 2022-07-13 2022-10-14 上海弘盛特种阀门制造股份有限公司 Cutting equipment of valve processing usefulness

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KR102086139B1 (en) 2018-07-13 2020-04-23 주식회사 삼신 Apparatus for cutting seat ring of power plant valve
KR102175173B1 (en) 2019-04-08 2020-11-06 주식회사 삼신 Apparatus for cutting seat ring of power plant valve
KR102205500B1 (en) 2019-07-02 2021-01-21 삼신밸브기술(주) Spindle device for seat ring cutter of power plant valves
KR102192955B1 (en) 2019-09-23 2020-12-18 주식회사 삼신 Method for repair welding of seat ring for power plant

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JP2568162B2 (en) * 1991-01-30 1996-12-25 東亜バルブ株式会社 Device for processing valve seats such as gate valves and check valves
JP3917851B2 (en) * 2001-12-11 2007-05-23 岡野バルブ製造株式会社 Welded joint cutting device for valve seat with valve box
KR100997051B1 (en) 2010-07-28 2010-11-29 주식회사 해정 Bore working method of hollow matter using exclusive use nc apparatus for working a bore

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CN108296735A (en) * 2018-01-30 2018-07-20 重庆市长寿区惠峰汽车修理有限公司 Auto parts machinery winding device
CN108296735B (en) * 2018-01-30 2019-07-02 重庆市长寿区惠峰汽车修理有限公司 Automobile parts winding device
CN108673168A (en) * 2018-07-26 2018-10-19 郑莹 A kind of special waterwheel for processing profiled limb valve
CN114206054A (en) * 2021-12-10 2022-03-18 深圳市芯杰矽科技有限公司 Integrated equipment of fully integrated high-reliability integrated circuit
CN115179093A (en) * 2022-07-13 2022-10-14 上海弘盛特种阀门制造股份有限公司 Cutting equipment of valve processing usefulness

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