CN114670031A - Device and method for maintaining on-site cuttings of ball valve seat - Google Patents

Device and method for maintaining on-site cuttings of ball valve seat Download PDF

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Publication number
CN114670031A
CN114670031A CN202210386485.7A CN202210386485A CN114670031A CN 114670031 A CN114670031 A CN 114670031A CN 202210386485 A CN202210386485 A CN 202210386485A CN 114670031 A CN114670031 A CN 114670031A
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CN
China
Prior art keywords
chip
ball valve
valve seat
valve body
guide rail
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN202210386485.7A
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Chinese (zh)
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CN114670031B (en
Inventor
柳勇
王苇
赵振兴
代路
劳星胜
戴春辉
李少丹
郑召利
徐广展
何涛
杨小虎
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719th Research Institute of CSIC
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719th Research Institute of CSIC
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Priority to CN202210386485.7A priority Critical patent/CN114670031B/en
Publication of CN114670031A publication Critical patent/CN114670031A/en
Application granted granted Critical
Publication of CN114670031B publication Critical patent/CN114670031B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw

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

Abstract

The invention discloses a maintenance device and a maintenance method for on-site cutting of a ball valve seat. Wherein the maintenance device of the on-spot smear metal of ball valve seat includes: the cutting machine comprises a base, at least one guide rail, a cutting amount adjusting rod, a working machine frame, a cutting motor, a cutter frame and a cutter head. The base is fixed on the valve body to be maintained. At least one guide rail is transversely fixed on the base and is positioned above the valve body to be maintained. The chip quantity adjusting rod is transversely fixed on the base and is positioned above the guide rail. The top of the working rack is arranged on the chip quantity adjusting rod, the middle of the working rack is arranged on the guide rail, and the bottom of the working rack extends into the valve body to be maintained. The top of the chip motor is fixedly connected with the bottom of the working frame. Therefore, the maintenance device for on-site chip of the ball valve seat has a simple and reasonable structure, can realize on-site chip maintenance of the sealing end surface of the ball valve without disassembling the valve body of the valve in a ship cabin, shortens the maintenance period and reduces the maintenance cost.

Description

Device and method for maintaining on-site cuttings of ball valve seat
Technical Field
The invention relates to the technical field of mechanical valves, in particular to a maintenance device and a maintenance method for on-site cutting of a valve seat of a ball valve.
Background
Ball valves are widely used in marine and ocean engineering. Because the long-term operation is under high salt, moist marine environment, the surface corrosion often takes place for the ball valve seat face, forms surface defects such as pit, indent, makes the ball valve seat face lose the roughness and lose sealing capacity, leads to the ball valve to leak. In the conventional maintenance mode, a valve is disassembled from a ship system and returned to a factory, the valve seat surface of a valve body of the ball valve is maintained on a large machine tool, and then the valve is returned to a shipyard for installation on a ship. Firstly, the maintenance period is long, the valve can be transported back and forth for months, and the ship sailing task is influenced; secondly, the maintenance cost is high, and the costs are generated in the processes of disassembling the valve out of the cabin, transporting and maintaining the valve and installing the valve on the ship; thirdly, the valve is not suitable for some special valves, a plurality of ball valves in a ship system are connected to pipelines in a welding mode, and even some valves are directly welded on a pressure-resistant structure of a ship body and cannot be dismounted for maintenance.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a device and a method for maintaining the on-site chip of a valve seat of a ball valve, which have simple and reasonable structure, can realize the on-site chip maintenance of the sealing end surface of the valve of the ball valve under the condition that the valve body of the valve is not disassembled in a ship cabin, shorten the maintenance period, reduce the maintenance cost, solve the problems that the special valve body of the valve cannot be disassembled for the maintenance when being welded with a system and the like, and have important significance for improving the maintainability of the valve of the ship system.
In order to achieve the above object, in a first aspect, the present invention provides a ball valve seat in-situ chip repairing device, including: the cutting machine comprises a base, at least one guide rail, a cutting amount adjusting rod, a working machine frame, a cutting motor, a cutter frame and a cutter head. The base is fixed on the valve body to be maintained. At least one guide rail is transversely fixed on the base and is positioned above the valve body to be maintained. The chip quantity adjusting rod is transversely fixed on the base and is positioned above the guide rail. The top of the working rack is arranged on the chip quantity adjusting rod, the middle of the working rack is arranged on the guide rail, and the bottom of the working rack extends into the valve body to be maintained. The top of the chip motor is fixedly connected with the bottom of the working frame, and the output end of the chip motor faces to a surface to be processed in the valve body to be maintained. The cutter frame is fixedly connected with a rotating shaft of the cutting motor. And the tool bit is fixed on the tool rack. The adjusting rod can drive the working rack to transversely move on the guide rail by adjusting the cutting amount. When the cutting motor is started, the rotating shaft can drive the cutter frame and the cutter head to rotate, so that the cutter head can perform cutting operation on a surface to be machined.
In one embodiment of the present invention, the valve body to be maintained is a ball valve body, the surface to be processed is located at the side of the valve, and the base is fixed on the upper end surface of the valve body to be maintained through a plurality of fastening bolts.
In one embodiment of the present invention, a base includes: base plate and two bosss. The substrate is in a ring shape. And the two bosses are symmetrically arranged on the upper surface of the substrate. Wherein, two guide rail mounting holes and regulation pole mounting hole have all been seted up to the side looks same position of two bosss, and adjust the pole mounting hole and lie in between two guide rail mounting holes. The base plate is provided with a plurality of fixing holes, and the distribution positions of the fixing holes correspond to the positions of the mounting holes of the upper end face of the valve body to be maintained.
In an embodiment of the present invention, the number of the at least one guide rail is two, the two guide rails are both in the shape of a support bar, and both ends of each guide rail are disposed in the guide rail mounting holes of the bosses and are restrained and fixed.
In an embodiment of the present invention, the work frame is a square plate, and two guide holes and a chip amount adjusting hole are formed in a side surface of the work frame. The positions of the two guide holes are arranged corresponding to the positions of the two guide rail mounting holes of the two bosses. Wherein, the position of the chip cutting hole corresponds to the position of the mounting hole of the adjusting rod.
In one embodiment of the present invention, a chip amount adjustment lever includes: a rotating rod and a rotating handle. One end of the rotary rod sequentially penetrates through the adjusting rod mounting hole of one boss and the cutting amount adjusting hole of the working rack and is arranged in the adjusting rod mounting hole of the other boss, and the middle part of the rotary rod is provided with a thread section. And the rotating handle is fixedly connected with the other end of the rotating rod. The chip quantity adjusting hole of the working frame is a threaded hole and is used for being correspondingly matched with the threaded section of the rotary rod. Wherein, through rotatory swing handle, can drive the horizontal migration of work frame on the screw thread section.
In one embodiment of the invention, a tool rack comprises: casing, guide slot, screw rod and nut. The guide groove is arranged at one end below the shell and is close to the surface to be processed. The screw rod is vertically arranged in the shell. And the nut is screwed on the screw rod, and one end of the cutter head is fixedly connected with the nut. Wherein, tool bit and casing are sliding fit, and the other end of tool bit moves along the guide slot straight line.
In an embodiment of the invention, the field chip maintenance device for the ball valve seat further comprises a feed motor fixed above the shell of the tool rack, and a rotating shaft of the feed motor is coaxially connected with a screw rod of the tool rack. When the feeding motor is started, the feeding motor can drive the screw to rotate and drive the nut to move, so that the cutter head is driven to move along the surface to be machined, and chip feeding is achieved.
In one embodiment of the present invention, the two guide holes of the working frame are respectively sleeved on the two guide rails, and the working frame and the two guide rails are in sliding fit.
In a second aspect, the present invention provides a method for repairing a ball valve seat by cutting in situ, comprising: and step S1, removing the upper end cover of the valve body to be maintained and taking out the valve ball assembly. And step S2, fixing the base on the upper end surface of the valve body to be maintained through fastening bolts. And step S3, the screw is driven to rotate by the feed motor, the cutter head is driven to move towards the axis of the rotating shaft of the cutting motor, and the cutter head is positioned in the inner ring of the surface to be processed. And step S4, manually rotating the rotating handle to drive the cutter head to move towards the surface to be machined, and setting the cutting amount. And step S5, turning on a chip motor to drive the cutter frame to rotate, so as to drive the cutter head to rotate around the central axis. And step S6, starting a feed motor to drive a screw to rotate, and driving a cutter head to move towards the axis of a rotating shaft far away from a cutting motor, so as to realize the cutting processing of the surface to be processed until the whole surface to be processed is processed. Step S7, the base is removed, the valve ball assembly is installed, and the upper end cap is sealed.
Compared with the prior art, the device and the method for maintaining the on-site chip of the ball valve seat have simple and reasonable structure, can realize the on-site chip maintenance of the sealing end surface of the ball valve without disassembling the valve body in a ship cabin, shorten the maintenance period, reduce the maintenance cost, solve the problems that the special valve body is welded and connected with a system and cannot be disassembled for maintenance, and the like, and have important significance for improving the maintainability of the ship system valve.
Drawings
FIG. 1 is a front view of a device for in situ chip repair of a ball valve seat according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a ball valve seat in-situ chip repair apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic top view of a base of a field chip repair device for a ball valve seat according to an embodiment of the present invention;
FIG. 4 is a side view of a work frame of a device for in situ chip repair of a ball valve seat according to an embodiment of the present invention;
FIG. 5 is a front view schematically illustrating a chip amount adjusting lever of the device for repairing chips on a ball valve seat in situ according to an embodiment of the present invention;
FIG. 6 is a schematic view of the internal structure of a tool holder of the apparatus for the field chip repair of a ball valve seat according to an embodiment of the present invention;
FIG. 7 is a flow diagram illustrating a method for field chip repair of a ball valve seat according to an embodiment of the present invention.
Description of the main reference numerals:
1-valve body to be maintained, 2-base, 21-boss, 22-guide rail mounting hole, 23-fixing hole, 24-adjusting rod mounting hole, 25-base plate, 3-guide rail, 4-feeding motor, 5-working frame, 51-guide hole, 52-cutting amount adjusting hole, 6-cutting amount adjusting rod, 61-rotary rod, 62-rotary handle, 7-cutting motor, 8-cutter frame, 81-shell, 82-screw rod, 83-nut, 84-cutter head, 85-guide groove and 9-surface to be processed.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations such as "comprises" or "comprising", etc., will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a front view schematically showing a maintenance apparatus for in-situ cutting of a valve seat of a ball valve according to an embodiment of the present invention. Fig. 2 is a schematic top view of a device for field chip repair of a ball valve seat according to an embodiment of the present invention. Fig. 3 is a schematic top view of a base of a field chip repair device for a ball valve seat according to an embodiment of the present invention. FIG. 4 is a side view of the working frame of the device for repairing the valve seat of the ball valve by cutting chips in the field according to an embodiment of the invention. Fig. 5 is a front view schematically illustrating a chip amount adjusting lever of the apparatus for repairing chips on a ball valve seat in situ according to an embodiment of the present invention. Fig. 6 is a schematic view of the internal structure of a tool rest of the apparatus for in-situ chip repair of a ball valve seat according to an embodiment of the present invention.
As shown in fig. 1 to 6, in a first aspect, a ball valve seat in-situ chip repair apparatus according to a preferred embodiment of the present invention includes: a base 2, at least one guide rail 3, a chip amount adjusting bar 6, a work frame 5, a chip motor 7, a tool frame 8, and a cutter head 84. The base 2 is fixed on the valve body 1 to be maintained. At least one guide rail 3 is transversely fixed on the base 2 and is positioned above the valve body 1 to be maintained. The chip amount adjusting rod 6 is transversely fixed to the base 2 and is positioned above the guide rail 3. The top of the working frame 5 is arranged on the chip quantity adjusting rod 6, the middle of the working frame 5 is arranged on the guide rail 3, and the bottom of the working frame 5 extends into the valve body 1 to be maintained. The top of the chip motor 7 is fixedly connected with the bottom of the working frame 5, and the output end of the chip motor 7 faces to a surface 9 to be processed inside the valve body 1 to be maintained. The tool carrier 8 is fixedly connected to the rotation shaft of the chip motor 7. And the cutting head 84 is fixed to the tool carrier 8. Wherein, the adjusting rod 6 for adjusting the amount of cutting scraps can drive the working frame 5 to move transversely on the guide rail 3. When the chip motor 7 is started, the rotating shaft can drive the cutter frame 8 and the cutter head 84 to rotate, so that the cutter head 84 performs a chip operation on the surface 9 to be machined.
In one embodiment of the present invention, the valve body 1 to be maintained is a ball valve body, the surface 9 to be processed is located at the side of the valve, and the base 2 is fixed on the upper end surface of the valve body 1 to be maintained through a plurality of fastening bolts.
In one embodiment of the present invention, the base 2 includes: a base plate 25 and two bosses 21. The substrate 25 has a circular ring shape. And two bosses 21 are symmetrically disposed on the upper surface of the base plate 25. Wherein, two guide rail 3 mounting holes 22 and adjusting rod mounting hole 24 have all been seted up to the side same position of two bosss 21, and adjust rod mounting hole 24 and be located between two guide rail 3 mounting holes 22. The base plate 25 is provided with a plurality of fixing holes 23, and the distribution positions of the plurality of fixing holes 23 correspond to the positions of the mounting holes on the upper end surface of the valve body 1 to be maintained.
In an embodiment of the present invention, the number of the at least one guide rail 3 is two, the two guide rails 3 are both in the shape of a support bar, and both ends of each guide rail 3 are disposed in the guide rail 3 mounting holes 22 of the boss 21 and are restrained and fixed.
In one embodiment of the present invention, the work frame 5 is a square plate, and two guide holes 51 and one chip amount adjusting hole 52 are formed in a side surface of the work frame 5. Wherein, the positions of the two guide holes 51 are arranged corresponding to the positions of the two guide rail 3 mounting holes 22 of the two bosses 21. Wherein the position of the chip cutting hole corresponds to the position of the adjusting rod mounting hole 24.
In one embodiment of the present invention, the chip amount adjustment rod 6 includes: a lever 61 and a handle 62. One end of the rotary rod 61 passes through the adjusting rod mounting hole 24 of one boss 21 and the cutting amount adjusting hole 52 of the working frame 5 in sequence, and is arranged in the adjusting rod mounting hole 24 of the other boss 21, and the middle part of the rotary rod 61 is provided with a threaded section. And the rotary handle 62 is fixedly connected with the other end of the rotary rod 61. The chip quantity adjusting hole 52 of the working frame 5 is a threaded hole, and the chip quantity adjusting hole 52 is used for correspondingly matching with the threaded section of the rotating rod 61. Wherein, through rotating the rotating handle 62, the working machine frame 5 can be driven to transversely move on the thread section.
In one embodiment of the present invention, the tool rack 8 comprises: a housing 81, a guide groove 85, a screw 82, and a nut 83. The guide groove 85 is opened at one end of the lower part of the housing 81 and is close to the surface 9 to be processed. The screw 82 is vertically disposed in the housing 81. And a nut 83 is screwed on the screw rod 82, and one end of the cutter head 84 is fixedly connected with the nut 83. Wherein, the cutting head 84 is in sliding fit with the housing 81, and the other end of the cutting head 84 moves linearly along the guide groove 85.
In one embodiment of the present invention, the apparatus for repairing the ball valve seat by cutting in situ further comprises a feed motor 4 fixed above the housing 81 of the tool frame 8, and the rotation shaft of the feed motor 4 is coaxially connected to the screw 82 of the tool frame 8. When the feeding motor 4 is started, the feeding motor 4 can drive the screw 82 to rotate, and drive the nut 83 to move, so as to drive the cutter head 84 to move along the surface 9 to be machined, and further realize chip feeding.
In one embodiment of the present invention, the two guide holes 51 of the working frame 5 are respectively sleeved on the two guide rails 3, and the working frame 5 is in sliding fit with the two guide rails 3.
In a second aspect, a method for field chip repair of a ball valve seat according to another preferred embodiment of the present invention includes: and step S1, removing the upper end cover of the valve body 1 to be maintained and taking out the valve ball assembly. Step S2, the base 2 is fixed on the upper end face of the valve body 1 to be repaired by fastening bolts. In step S3, the screw 82 is driven to rotate by the feeding motor 4, and the cutter head 84 is driven to move toward the axis of the rotating shaft of the chip motor 7, so that the cutter head 84 is positioned inside the inner ring of the surface 9 to be machined. In step S4, the tool bit 84 is moved toward the surface to be machined 9 by manually rotating the knob 62, and the amount of chips is set. In step S5, the chip motor 7 is turned on to rotate the tool frame 8, thereby rotating the cutter head 84 about the central axis. And step S6, starting the feed motor 4 to drive the screw 82 to rotate, and driving the cutter head 84 to move towards the axis of the rotating shaft far away from the cutting motor 7, so as to realize the cutting processing of the surface 9 to be processed until the whole surface 9 to be processed is processed. Step S7, remove the base 2, install the valve ball assembly, and seal the upper end cap.
In practical application, the invention discloses a maintenance device and a maintenance method for on-site cutting of a ball valve seat, wherein a base plate 25 of a base 2 is in a circular ring shape, two rectangular bosses 21 which are bilaterally symmetrical are arranged on the upper surface of the base plate 25, and two guide rail 3 mounting holes 22 and an adjusting rod mounting hole 24 which are identical in size are respectively formed in the same positions of the side edges of the two rectangular bosses 21. The base plate 25 is provided with fixing holes 23, and the distribution positions of the fixing holes 23 correspond to the positions of the mounting holes on the upper end surface of the valve body 1 to be maintained (shown in fig. 3). The guide rail 3 is in the shape of a cylindrical rod, and the working machine frame 5 is a square flat plate, and can also be in other shapes. The side surface of the work frame 5 is provided with two guide holes 51 and a chip amount adjusting hole 52. The relative positions of the guide hole 51 and the chip amount adjusting hole 52 correspond to the positions of the guide rail 3 mounting hole 22 and the adjusting lever mounting hole 24 of the base 2 (shown in fig. 4). The chip amount adjusting lever 6 includes a turn lever 61 and a turn handle 62 (shown in fig. 5). The tool frame 8 comprises a tool frame 8 housing 81, a screw 82, a nut 83, a cutting head 84 and a guide groove 85. The cutting head 84 is in sliding fit with the housing 81, and the cutting head 84 moves linearly along the guide groove 85 of the housing 81. The cutter head 84 is fixedly connected with the nut 83, and the screw rod 82 is matched with the nut 83 through a screw nut 83 (shown in fig. 6). On the basis, the base 2 is fixed on the upper end face of the valve body 1 to be maintained through fasteners such as bolts.
On the basis, two guide rails 3 are arranged, and two ends of each guide rail 3 are arranged in the guide rail 3 mounting holes 22 of the base 2 and are fixed in a fully-restricted manner. The chip amount adjusting rod 6 is disposed in the adjusting rod mounting hole 24 of the base 2, and restricts axial and radial movements of the chip amount adjusting rod 6. Two guide holes 51 of the working frame 5 are respectively sleeved on the two guide rails 3, and a chip quantity adjusting hole 52 of the working frame 5 is sleeved on a rotary rod 61 of the chip quantity adjusting rod 6. The working machine frame 5 is in sliding fit with the guide rail 3, and the working machine frame 5 is matched with the cutting amount adjusting rod 6 by adopting a lead screw nut 83. The chip motor 7 is disposed at the bottom of the working machine frame 5. The tool frame 8 is fixedly connected to a rotation shaft of the chip motor 7 and rotates together with the rotation shaft of the chip motor 7.
On the basis, the feeding motor 4 is fixedly connected to the housing 81 of the tool rack 8, and the rotating shaft of the feeding motor 4 is coaxially connected with the screw 82 of the tool rack 8. The feed motor 4 rotates the shaft to rotate the screw 82.
When the cutting tool is used, the rotating handle 62 is manually rotated, the rotating rod 61 is matched with the screw nut 83 of the working rack 5, the working rack 5 is driven to horizontally move, and then the cutter head 84 is driven to move perpendicular to a cutting surface, so that the cutter head 84 is located at a proper cutting position, and a proper cutting amount is set. The chip cutting motor 7 is started to drive the cutter frame 8 to rotate, and further drive the cutter head 84 to rotate, so that the chip cutting process is completed. By starting the feeding motor 4, the screw rod 82 of the cutter frame 8 is driven to rotate, the screw rod 82 is matched with the screw nut 83 of the nut 83 to drive the nut 83 to move, and then the cutter head 84 is driven to move along a chip surface, so that chip feeding is realized.
When in use, the method comprises the following specific steps:
1. removing the upper end cover of the valve, and taking out valve components such as a valve ball and the like;
2. fixing a base 2 of the chip maintenance device on the upper end surface of the valve body 1 to be maintained through bolts;
3. the screw rod 82 is driven to rotate by the feeding motor 4, and the cutter head 84 is driven to move towards the axis of the rotating shaft of the chip motor 7, so that the cutter head 84 is positioned in the inner ring of the surface 9 to be processed;
3. the rotating handle 62 is manually rotated to drive the cutter head 84 to move vertical to the surface to be cut, and the cutting amount is set;
4. turning on a chip motor 7 to drive a cutter frame 8 to rotate, so as to drive a cutter head 84 to rotate around a central axis;
5. starting a feed motor 4 to drive a screw 82 to rotate, and driving a cutter head 84 to move towards the axis of a rotating shaft far away from a cutting motor 7, so that the cutting processing of a maintenance surface is realized until the processing of the whole maintenance surface is finished;
6. and (4) removing the chip maintenance device, installing valve components such as a valve ball and the like, and sealing an upper end cover of the valve.
In a word, the device and the method for maintaining the on-site chip of the ball valve seat have simple and reasonable structure, can realize the on-site chip maintenance of the sealing end surface of the ball valve without disassembling the valve body of the valve in a ship cabin, shorten the maintenance period, reduce the maintenance cost, solve the problems that the special valve body of the valve is welded and connected with a system and cannot be disassembled for the maintenance of the valve out of the cabin, and the like, and have important significance for improving the maintainability of the valve of a ship system.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (10)

1. A ball valve seat field chip repair device, comprising:
the base is fixed on the valve body to be maintained;
the guide rail is transversely fixed on the base and is positioned above the valve body to be maintained;
the chip quantity adjusting rod is transversely fixed on the base and is positioned above the guide rail;
the top of the working frame is arranged on the chip quantity adjusting rod, the middle of the working frame is arranged on the guide rail, and the bottom of the working frame extends into the valve body to be maintained;
the top of the chip motor is fixedly connected with the bottom of the working frame, and the output end of the chip motor faces to a surface to be machined in the valve body to be maintained;
the cutter frame is fixedly connected with a rotating shaft of the cutting motor; and
the cutter head is fixed on the cutter frame;
the cutting amount adjusting rod is adjusted to drive the working rack to transversely move on the guide rail;
when the chip cutting motor is started, the rotating shaft can drive the cutter frame and the cutter head to rotate, so that the cutter head can perform chip cutting operation on the surface to be machined.
2. The apparatus for in-situ chip repair of a ball valve seat as claimed in claim 1, wherein said valve body to be repaired is a ball valve body, said surface to be machined is located at a side of the valve, and said base is fixed to an upper end surface of said valve body to be repaired by a plurality of fastening bolts.
3. A ball valve seat field chip repair device as claimed in claim 1, wherein said base comprises:
the substrate is in a ring shape; and
the two bosses are symmetrically arranged on the upper surface of the substrate;
the two guide rail mounting holes and the adjusting rod mounting hole are formed in the same positions of the side edges of the two bosses, and the adjusting rod mounting hole is located between the two guide rail mounting holes;
the base plate is provided with a plurality of fixing holes, and the distribution positions of the fixing holes correspond to the positions of the mounting holes in the upper end face of the valve body to be maintained.
4. A ball valve seat in situ chip repair apparatus as claimed in claim 3, wherein said at least one guide rail is two in number, two of said guide rails are each in the shape of a help lever, and both ends of each of said guide rails are disposed in said guide rail mounting holes of said bosses and restrained fixedly.
5. The ball valve seat on-site chip maintenance device according to claim 4, wherein the working frame is a square flat plate, and two guide holes and a chip amount adjusting hole are formed in the side surface of the working frame;
the positions of the two guide holes are arranged corresponding to the positions of the two guide rail mounting holes of the two bosses;
the position of the chip cutting hole corresponds to the position of the adjusting rod mounting hole.
6. The ball valve seat in-situ chip repair apparatus of claim 5, wherein said chip amount adjusting lever comprises:
one end of the rotary rod sequentially penetrates through the adjusting rod mounting hole of one boss and the cutting amount adjusting hole of the working rack and is arranged in the adjusting rod mounting hole of the other boss, and a thread section is arranged in the middle of the rotary rod; and
the rotating handle is fixedly connected with the other end of the rotating rod;
the chip quantity adjusting hole of the working frame is a threaded hole and is used for being correspondingly matched with the threaded section of the rotary rod;
the rotary handle is rotated to drive the working rack to transversely move on the thread section.
7. A ball valve seat field chip repair apparatus as claimed in claim 1, wherein said tool carrier comprises:
a housing;
the guide groove is formed in one end below the shell and is close to the surface to be processed;
the screw rod is vertically arranged in the shell; and
the nut is screwed on the screw rod, and one end of the cutter head is fixedly connected with the nut;
the tool bit is in sliding fit with the shell, and the other end of the tool bit moves linearly along the guide groove.
8. The ball valve seat field chip repair device of claim 7, further comprising a feed motor fixed above said housing of said tool rack, a rotation shaft of said feed motor being coaxially connected to said screw of said tool rack;
when the feeding motor is started, the feeding motor can drive the screw to rotate and drive the nut to move, so that the cutter head is driven to move along the surface to be machined, and chip feeding is achieved.
9. The apparatus for in-situ chip repair of a ball valve seat as claimed in claim 5, wherein said two guide holes of said working frame are respectively sleeved on said two guide rails, and said working frame is slidably engaged with said two guide rails.
10. A ball valve seat on-site chip maintenance method based on the maintenance device as claimed in claims 1 to 9, characterized in that the ball valve seat on-site chip maintenance method comprises:
step S1, removing the upper end cover of the valve body to be maintained, and taking out the valve ball assembly;
step S2, fixing a base on the upper end face of the valve body to be maintained through a fastening bolt;
step S3, the screw rod is driven to rotate by the feed motor, and the cutter head is driven to move towards the axis of the rotating shaft of the cutting motor, so that the cutter head is positioned in the inner ring of the surface to be processed;
step S4, manually rotating the rotating handle to drive the cutter head to move towards the surface to be machined, and setting the cutting amount;
step S5, turning on the cutting motor to drive the cutter frame to rotate, so as to drive the cutter head to rotate around the central axis;
step S6, starting the feed motor to drive the screw rod to rotate, and driving the cutter head to move towards the axis of the rotating shaft far away from the chip cutting motor, so as to realize chip cutting of the surface to be machined until the whole surface to be machined is machined;
and step S7, removing the base, installing the valve ball assembly and sealing the upper end cover.
CN202210386485.7A 2022-04-13 2022-04-13 Maintenance device and method for on-site cutting of ball valve seat Active CN114670031B (en)

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CN202210386485.7A CN114670031B (en) 2022-04-13 2022-04-13 Maintenance device and method for on-site cutting of ball valve seat

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Application Number Priority Date Filing Date Title
CN202210386485.7A CN114670031B (en) 2022-04-13 2022-04-13 Maintenance device and method for on-site cutting of ball valve seat

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CN114670031B CN114670031B (en) 2024-04-26

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106392102A (en) * 2016-11-10 2017-02-15 丁乐冲 Flange end face machining device
CN207857977U (en) * 2017-12-19 2018-09-14 天津市开源第三阀门有限公司 Gate valve bonnet, connecting flange sealing surface inner chamfer circumcircle processing unit (plant)
KR20200007571A (en) * 2018-07-13 2020-01-22 주식회사 삼신 Apparatus for cutting seat ring of power plant valve
CN111842935A (en) * 2020-07-22 2020-10-30 常州中车西屋柴油机有限公司 Diesel engine valve seat ring repairing device and repairing method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106392102A (en) * 2016-11-10 2017-02-15 丁乐冲 Flange end face machining device
CN207857977U (en) * 2017-12-19 2018-09-14 天津市开源第三阀门有限公司 Gate valve bonnet, connecting flange sealing surface inner chamfer circumcircle processing unit (plant)
KR20200007571A (en) * 2018-07-13 2020-01-22 주식회사 삼신 Apparatus for cutting seat ring of power plant valve
CN111842935A (en) * 2020-07-22 2020-10-30 常州中车西屋柴油机有限公司 Diesel engine valve seat ring repairing device and repairing method thereof

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