CN114670031B - Maintenance device and method for on-site cutting of ball valve seat - Google Patents

Maintenance device and method for on-site cutting of ball valve seat Download PDF

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Publication number
CN114670031B
CN114670031B CN202210386485.7A CN202210386485A CN114670031B CN 114670031 B CN114670031 B CN 114670031B CN 202210386485 A CN202210386485 A CN 202210386485A CN 114670031 B CN114670031 B CN 114670031B
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CN
China
Prior art keywords
chip
adjusting rod
guide rail
valve body
motor
Prior art date
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Active
Application number
CN202210386485.7A
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Chinese (zh)
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CN114670031A (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
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Classifications

    • 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 method for on-site cutting of a ball valve seat. Wherein the maintenance device of the on-site cuttings of ball valve disk seat includes: the cutting machine comprises a base, at least one guide rail, a cutting quantity adjusting rod, a working rack, a cutting motor, a cutter rack 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 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 stretches 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 cutting of the ball valve seat has a simple and reasonable structure, can realize on-site cutting maintenance of the sealing end surface of the ball valve under the condition that the valve body of the valve is not disassembled in a ship cabin, shortens the maintenance period and reduces the maintenance cost.

Description

Maintenance device and method for on-site cutting of ball valve seat
Technical Field
The invention relates to the technical field of mechanical valves, in particular to a maintenance device and method for on-site cutting of a ball valve seat.
Background
Ball valves are widely used in marine and ocean engineering. Because the ball valve seat surface often generates surface corrosion when the ball valve is operated in a high-salt and wet marine environment for a long time, surface defects such as pits and dents are formed, the flatness of the ball valve seat surface is lost, the sealing capability is lost, and the ball valve is leaked. The existing maintenance mode is to detach the valve from the ship system and return the valve to the factory, maintain the valve seat surface of the ball valve body on the large machine tool, and then return the valve to the shipyard for installation on the ship. The maintenance mode has the advantages that firstly, the maintenance period is long, the valve can be transported back and forth for a plurality of months, and the ship sailing task is influenced; secondly, the maintenance cost is high, and the valve is required to be disassembled and taken out of the cabin, transported and maintained and installed on the ship; and thirdly, the valve is not applicable to some special valves, a plurality of ball valves in a ship system are connected to a pipeline in a welding mode, even some valves are directly welded to a hull pressure-resistant structure, and the valves cannot be removed 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 already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a maintenance device and a maintenance method for on-site cutting of a ball valve seat, which have simple and reasonable structure, can realize on-site cutting maintenance of the sealing end surface of a ball valve under the conditions of not detaching a valve body in a ship cabin, shorten the maintenance period, reduce the maintenance cost, solve the problems that a special valve body and a system are in welded connection and cannot be detached for cabin maintenance and the like, and have important significance for improving the maintainability of a ship system valve.
To achieve the above object, in a first aspect, the present invention provides a maintenance device for on-site cutting of a valve seat of a ball valve, comprising: the cutting machine comprises a base, at least one guide rail, a cutting quantity adjusting rod, a working rack, a cutting motor, a cutter rack 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 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 stretches 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 the rotating shaft of the chip motor. The tool bit is fixed on the tool frame. Wherein, through adjusting the smear metal volume regulation pole, can drive the work frame and transversely remove on the guide rail. When the chip motor is started, the rotating shaft can drive the cutter frame and the cutter head to rotate, so that the cutter head performs chip cutting operation on a surface to be processed.
In one embodiment of the invention, the valve body to be maintained is a ball valve body, the surface to be processed is positioned at the side edge 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, the base includes: a base plate and two bosses. The base plate is circular. And the two bosses are symmetrically arranged on the upper surface of the substrate. Wherein, two guide rail mounting holes and regulation pole mounting holes have all been seted up to the same position of side of two bosss, and adjust the pole mounting hole and be located between two guide rail mounting holes. The base plate is provided with a plurality of fixing holes, and the distribution positions of the plurality of fixing holes correspond to the mounting holes on the upper end face of the valve body to be maintained.
In one embodiment of the invention, the number of the at least one guide rail is two, the two guide rails are in the shape of an assisting rod, and two ends of each guide rail are arranged in the guide rail mounting holes of the boss and are restrained and fixed.
In one embodiment of the invention, the working frame is a square flat plate, and two guide holes and a chip amount adjusting hole are formed in the side face of the working frame. The positions of the two guide holes are corresponding to the positions of the two guide rail mounting holes of the two bosses. Wherein the positions of the chip holes correspond to the positions of the mounting holes of the adjusting rod.
In one embodiment of the present invention, the chip amount adjusting lever includes: a rotary rod and a rotary handle. One end of the rotary rod sequentially passes through the adjusting rod mounting hole of one boss and the chip quantity adjusting hole of the working frame, 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 cutting amount 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 knob, can drive the work frame and transversely move on the screw thread section.
In one embodiment of the present invention, a tool rack includes: the device comprises a shell, a guide groove, a screw rod and a nut. The guide slot 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. The cutter head is in sliding fit with the shell, and the other end of the cutter head moves linearly along the guide groove.
In one embodiment of the invention, the maintenance device for on-site cutting of the ball valve seat further comprises a feeding motor, wherein the feeding motor is fixed above the shell of the cutter frame, and the rotating shaft of the feeding motor is coaxially connected with the screw rod of the cutter frame. When the feeding motor is started, the feeding motor can drive the screw rod to rotate and drive the nut to move, so that the tool bit is driven to move along the surface to be processed, and chip feeding is realized.
In one embodiment of the invention, the two guide holes of the working frame are respectively sleeved on the two guide rails, and the working frame is in sliding fit with the two guide rails.
In a second aspect, the invention provides a method for repairing on-site cuttings of a valve seat of a ball valve, comprising the following steps: and S1, removing an upper end cover of the valve body to be maintained, and taking out the valve ball assembly. And S2, fixing the base on the upper end surface of the valve body to be maintained through a fastening bolt. And S3, driving the screw rod to rotate through the feeding motor, and driving the tool bit to move towards the axis of the rotating shaft of the chip motor, so that the tool bit is positioned in the inner ring of the surface to be processed. And S4, manually rotating the rotary handle to drive the tool bit to move towards the surface to be processed, and setting the chip quantity. And S5, starting a chip motor to drive the cutter frame to rotate, so as to drive the cutter head to rotate around the central axis. And S6, starting a feed motor to drive the screw rod to rotate, and driving the tool bit to move towards the axis of the rotating shaft far away from the chip motor, so as to realize chip processing on the surface to be processed until the whole surface to be processed is processed. And S7, removing the base, simultaneously installing the valve ball assembly and sealing the upper end cover.
Compared with the prior art, the on-site chip repairing device and method for the ball valve seat have the advantages that the structure is simple and reasonable, on-site chip repairing of the sealing end surface of the ball valve can be realized under the condition that the valve body is not disassembled in a ship cabin, the repairing period is shortened, the repairing cost is reduced, the problem that the special valve body cannot be disassembled for maintenance after being welded with a system is solved, and the on-site chip repairing device and method for the ball valve seat have important significance in improving the maintainability of the valve of a ship system.
Drawings
FIG. 1 is a schematic diagram of a front view of a maintenance device for in-situ cutting of a ball valve seat according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a service device for in-situ cutting of a ball valve seat according to one embodiment of the invention;
FIG. 3 is a schematic top view of the base of a servicing device for in-situ cutting of a ball valve seat according to one embodiment of the invention;
FIG. 4 is a schematic side view of a work frame of a service device for field chip removal of a ball valve seat according to an embodiment of the invention;
FIG. 5 is a schematic diagram showing a front view of a chip amount adjusting lever of a maintenance device for on-site chip on a valve seat of a ball valve according to an embodiment of the present invention;
FIG. 6 is a schematic view of the internal structure of a cutter frame of a maintenance device for in-situ cutting of a ball valve seat according to an embodiment of the present invention;
FIG. 7 is a flow chart of a method of servicing in-situ cuttings of a ball valve seat in accordance with an embodiment of the present invention.
The main reference numerals illustrate:
The valve comprises a valve body to be maintained, a 2-base, a 21-boss, a 22-guide rail mounting hole, a 23-fixing hole, a 24-adjusting rod mounting hole, a 25-base plate, a 3-guide rail, a 4-feeding motor, a 5-working frame, a 51-guiding hole, a 52-cutting amount adjusting hole, a 6-cutting amount adjusting rod, a 61-rotating rod, a 62-rotating handle, a 7-cutting motor, an 8-tool frame, a 81-shell, a 82-screw rod, a 83-nut, a 84-tool bit, a 85-guide groove and a 9-surface to be processed.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
Fig. 1 is a schematic front view of a maintenance device for on-site chipping 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 maintenance device for in-situ chipping of a ball valve seat according to one embodiment of the present invention. Fig. 3 is a schematic top view of the base of a maintenance device for in-situ chipping of a ball valve seat according to one embodiment of the invention. Fig. 4 is a schematic side view of a working frame of a maintenance device for field cutting of a ball valve seat according to an embodiment of the present invention. Fig. 5 is a schematic diagram showing a front view of a chip amount adjusting lever of a maintenance device for on-site chip on a valve seat of a ball valve according to an embodiment of the present invention. Fig. 6 is a schematic view showing the internal structure of a cutter frame of a maintenance device for on-site cutting 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 maintenance device for in-situ cutting of a valve seat of a ball valve according to a preferred embodiment of the present invention includes: the chip cutting machine comprises a base 2, at least one guide rail 3, a chip quantity adjusting rod 6, a working frame 5, a chip cutting motor 7, a cutter 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 fastened transversely to the base 2 and is located above the valve body 1 to be repaired. The chip quantity adjusting lever 6 is transversely fixed to the base 2 and is located above the guide rail 3. The top of the working frame 5 is arranged on the chip quantity adjusting rod 6, the middle part 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 in the valve body 1 to be maintained. The tool holder 8 is fixedly connected with the rotary shaft of the chip motor 7. And the cutter head 84 is fixed to the cutter frame 8. Wherein, through adjusting chip volume regulation pole 6, can drive work frame 5 lateral shifting on 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 chip cutting operation on the surface 9 to be processed.
In one embodiment of the invention, the valve body 1 to be maintained is a ball valve body, the surface 9 to be processed is positioned 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 shape. And the two bosses 21 are symmetrically disposed on the upper surface of the substrate 25. Wherein, two guide rail 3 mounting holes 22 and adjusting lever mounting holes 24 are all offered to the same position of side of two bosss 21, and adjusting lever mounting holes 24 are located between two guide rail 3 mounting holes 22. Wherein, a plurality of fixing holes 23 are arranged on the base plate 25, and the distribution positions of the plurality of fixing holes 23 correspond to 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 at least one guide rail 3 is two, both guide rails 3 are in the shape of an assistance rod, 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 invention, the work frame 5 is a square flat plate, and two guide holes 51 and a chip amount adjusting hole 52 are formed in the 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 positions of the chip holes correspond to the positions of the adjustment lever mounting holes 24.
In one embodiment of the present invention, the chip amount adjusting lever 6 includes: the lever 61 and the knob 62. One end of the screw 61 sequentially passes through the adjusting rod mounting hole 24 of one boss 21 and the chip amount adjusting hole 52 of the work frame 5, and is disposed in the adjusting rod mounting hole 24 of the other boss 21, and the middle part of the screw 61 has a screw thread section. And the rotary handle 62 is fixedly connected with the other end of the rotary rod 61. The chip amount adjusting hole 52 of the working frame 5 is a threaded hole, and the chip amount adjusting hole 52 is used for correspondingly matching with a threaded section of the rotary rod 61. Wherein by rotating the knob 62 the work frame 5 can be driven to move laterally over the thread segments.
In one embodiment of the invention, the tool holder 8 comprises: housing 81, guide groove 85, screw 82, and nut 83. The guide groove 85 is provided at one end of the lower portion of the housing 81 and is close to the surface 9 to be processed. The screw 82 is vertically disposed within the housing 81. And a nut 83 is screwed on the screw 82, and one end of the cutter head 84 is fixedly connected with the nut 83. Wherein, tool bit 84 is a sliding fit with housing 81, and the other end of tool bit 84 moves linearly along guide slot 85.
In one embodiment of the invention, the maintenance device for on-site cutting of the ball valve seat further comprises a feed motor 4, which is fixed above the housing 81 of the cutter frame 8, and the rotation shaft of the feed motor 4 is coaxially connected with the screw 82 of the cutter 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 that the tool bit 84 is driven to move along the surface 9 to be processed, and chip feeding is achieved.
In an 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 and the two guide rails 3 are in sliding fit.
In a second aspect, a method for in-situ chip repair of a ball valve seat according to another preferred embodiment of the present invention includes: and 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 surface of the valve body 1 to be repaired by fastening bolts. In step S3, the screw 82 is driven to rotate by the feed motor 4, so as to drive the tool bit 84 to move towards the axis of the spindle of the chip motor 7, and the tool bit 84 is located inside the inner ring of the surface 9 to be processed. Step S4, the rotary handle 62 is manually rotated to drive the tool bit 84 to move towards the surface 9 to be processed, and the chip quantity is set. In step S5, the chip motor 7 is turned on to drive the cutter frame 8 to rotate, so as to drive the cutter head 84 to rotate around the central axis. And S6, starting the feed motor 4 to drive the screw 82 to rotate, and driving the tool bit 84 to move towards the axis of the rotating shaft far away from the chip motor 7, so as to realize chip processing on the surface 9 to be processed until the whole surface 9 to be processed is processed. And S7, removing the base 2, simultaneously installing the valve ball assembly and sealing the upper end cover.
In practical application, the on-site chip repairing device and method for the ball valve seat of the invention have the advantages that the base plate 25 of the base 2 is in a circular ring shape, the upper surface of the base plate 25 is provided with two rectangular bosses 21 which are bilaterally symmetrical, and two guide rail 3 mounting holes 22 and one adjusting rod mounting hole 24 with the same 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 mounting holes on the upper end face of the valve body 1 to be maintained (shown in fig. 3). The guide rail 3 is in a cylindrical rod shape, and the working frame 5 is a square flat plate and can also be in other shapes. Two guide holes 51 and a chip quantity adjusting hole 52 are provided on the side of the work frame 5. The relative positions of the guide hole 51 and the chip amount adjustment hole 52 correspond to the positions of the guide rail 3 mounting hole 22 and the adjustment lever mounting hole 24 of the base 2 (shown in fig. 4). The chip amount adjustment lever 6 includes a rotation lever 61 and a rotation handle 62 (shown in fig. 5). The tool housing 8 includes a tool housing 8 housing 81, a screw 82, a nut 83, a bit 84, and a guide groove 85. The cutter head 84 is in sliding fit with the housing 81, and the cutter head 84 moves linearly along the guide groove 85 of the housing 81. The tool bit 84 is fixedly connected with the nut 83, and the screw 82 and the nut 83 are matched with each other by the screw nut 83 (shown in fig. 6). On the basis of the above, the base 2 is fixed to the upper end face of the valve body 1 to be repaired by a fastener such as a bolt.
On the basis of the above, 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 fully restrained and fixed. The chip amount adjustment lever 6 is provided in the adjustment lever mounting hole 24 of the base 2, and restricts the axial movement and the radial movement of the chip amount adjustment lever 6. The two guide holes 51 of the working frame 5 are respectively sleeved on the two guide rails 3, and the chip quantity adjusting holes 52 of the working frame 5 are sleeved on the rotary rod 61 of the chip quantity adjusting rod 6. The working frame 5 is in sliding fit with the guide rail 3, and the working frame 5 is matched with the chip quantity adjusting rod 6 by a screw nut 83. The chip motor 7 is arranged at the bottom of the work frame 5. The tool holder 8 is fixedly connected to the rotation shaft of the chip motor 7 and rotates together with the rotation shaft of the chip motor 7.
On the basis of the above, the feed motor 4 is fixedly connected to 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. The feed motor 4 rotates the screw 82.
When in use, the rotary handle 62 is manually rotated, and the working machine frame 5 is driven to horizontally move through the cooperation of the rotary rod 61 and the screw nut 83 of the working machine frame 5, so that the cutter head 84 is driven to vertically move along the cutting surface, and the cutter head 84 is positioned at a proper cutting position, namely, a proper cutting quantity is set. The cutting motor 7 is started to drive the cutter frame 8 to rotate, and then the cutter head 84 is driven to rotate, so that the cutting process is completed. By starting the feeding motor 4, the screw 82 of the cutter frame 8 is driven to rotate, the screw 82 and the screw nut 83 of the nut 83 are matched to drive the nut 83 to move, and then the cutter head 84 is driven to move along the chip surface, so that chip feeding is realized.
When in use, the specific steps are as follows:
1. Dismantling an upper end cover of the valve, and taking out valve components such as a valve ball and the like;
2. the base 2 of the chip repairing device is fixed on the upper end surface of the valve body 1 to be repaired through bolts;
3. The screw 82 is driven to rotate by the feed motor 4, and the tool bit 84 is driven to move towards the axis of the rotating shaft of the chip motor 7, so that the tool bit 84 is positioned in the inner ring of the surface 9 to be processed;
3. manually rotating the rotary handle 62 to drive the tool bit 84 to move vertically to the surface to be chipped, and setting the amount of chippings;
4. Turning on the chip motor 7 to drive the cutter frame 8 to rotate, so as to drive the cutter head 84 to rotate around the central axis;
5. starting the feed motor 4 to drive the screw 82 to rotate, driving the cutter head 84 to move towards the axis of the rotating shaft far away from the chip motor 7, and realizing chip processing of the maintenance surface until the whole maintenance surface is processed;
6. And 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 maintenance device and the maintenance method for on-site cutting of the ball valve seat are simple and reasonable in structure, can realize on-site cutting maintenance of the sealing end surface of the ball valve under the conditions of not detaching the valve body in a ship cabin, shorten the maintenance period, reduce the maintenance cost, solve the problem that the special valve body and a system are in welded connection and cannot be detached for maintenance, 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 are 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 the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various 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 (4)

1. A maintenance device for on-site cutting of a ball valve seat, comprising:
the base is fixed on the valve body to be maintained;
at least one guide rail transversely fixed on the base and 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 cutting motor is fixedly connected with the bottom of the working rack, and the output end of the cutting motor faces to a surface to be machined in the valve body to be maintained;
the cutter frame, with the rotation axis fixed connection of chip motor, just the cutter frame includes:
A housing;
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;
The tool bit is fixed on the tool frame, and one end of the tool bit is fixedly connected with the nut; and
A feed motor fixed above the housing of the cutter frame, a rotation shaft of the feed motor being coaxially connected with the screw of the cutter frame;
The cutter head is in sliding fit with the shell, and the other end of the cutter head moves linearly along the guide groove;
the cutting chip amount adjusting rod is adjusted to drive the working rack to transversely move on the guide rail;
when the chip motor is started, the rotating shaft can drive the cutter frame and the cutter head to rotate, so that the cutter head carries out chip cutting operation on the surface to be processed;
When the feeding motor is started, the feeding motor can drive the screw rod to rotate and drive the nut to move, so that the tool bit is driven to move along the surface to be processed, and chip feeding is realized;
The working machine frame is a square flat plate, and two guide holes and a chip quantity adjusting hole are formed in the side face of the working machine frame;
the two guide holes of the working machine frame are respectively sleeved on the two guide rails, and the working machine frame is in sliding fit with the two guide rails;
Wherein, the base includes:
The substrate is in a circular 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 plurality of fixing holes correspond to the mounting holes on the upper end face of the valve body to be maintained;
the chip quantity adjusting rod is arranged in the adjusting rod mounting hole of the base, and the adjusting rod mounting hole can restrict the axial movement and the radial movement of the chip quantity adjusting rod;
the valve body to be maintained is a ball valve body, the surface to be processed is positioned at the side edge of the valve, and the base is fixed on the upper end face of the valve body to be maintained through a plurality of fastening bolts;
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 positions of the chip holes correspond to the positions of the adjusting rod mounting holes.
2. The maintenance device for on-site cutting of valve seats of ball valves according to claim 1, wherein the number of the at least one guide rail is two, the two guide rails are in the shape of cylindrical rods, and both ends of each guide rail are arranged in the guide rail mounting holes of the bosses and are restrained and fixed.
3. The apparatus for repairing a ball valve seat in-situ chip as defined in claim 2, wherein said chip amount adjusting lever comprises:
One end of the rotary rod sequentially passes through the adjusting rod mounting hole of one boss and the chip quantity adjusting hole of the working frame, 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 rotary handle is fixedly connected with the other end of the rotary rod;
The cutting quantity adjusting hole of the working machine frame is a threaded hole and is used for being correspondingly matched with the threaded section of the rotary rod;
The working machine frame can be driven to transversely move on the thread section by rotating the rotary handle.
4. A method of repairing a ball valve seat in situ chip based on a repair device according to any one of claims 1 to 3, characterized in that it comprises:
s1, removing an upper end cover of a valve body to be maintained, and taking out a valve ball assembly;
S2, fixing a base on the upper end face of the valve body to be maintained through a fastening bolt;
S3, driving the screw rod to rotate through the feeding motor, and driving the tool bit to move towards the axis of the rotating shaft of the chip motor, so that the tool bit is positioned in the inner ring of the surface to be processed;
s4, manually rotating a rotary handle to drive the tool bit to move towards the surface to be processed, and setting the chip quantity;
S5, starting the chip motor to drive the cutter frame to rotate, so as to drive the cutter head to rotate around the central axis;
S6, starting the feed motor to drive the screw rod to rotate, driving the tool bit to move away from the axis of the rotating shaft of the chip motor, and realizing chip processing on the surface to be processed until the whole surface to be processed is processed;
s7, removing the base, simultaneously installing the valve ball assembly and sealing the upper end cover;
the cutting chip amount adjusting rod is adjusted to drive the working rack to transversely move on the guide rail;
when the chip motor is started, the rotating shaft can drive the cutter frame and the cutter head to rotate, so that the cutter head carries out chip cutting operation on the surface to be processed;
When the feeding motor is started, the feeding motor can drive the screw rod to rotate and drive the nut to move, so that the tool bit is driven to move along the surface to be processed, and chip feeding is realized;
the two guide holes of the working machine frame are respectively sleeved on the two guide rails, and the working machine frame is in sliding fit with the two guide rails;
Wherein, the base includes:
The substrate is in a circular 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 plurality of fixing holes correspond to the mounting holes on the upper end face of the valve body to be maintained;
the chip quantity adjusting rod is arranged in the adjusting rod mounting hole of the base, and the adjusting rod mounting hole can restrict the axial movement and the radial movement of the chip quantity adjusting rod;
the valve body to be maintained is a ball valve body, the surface to be processed is positioned at the side edge of the valve, and the base is fixed on the upper end face of the valve body to be maintained through a plurality of fastening bolts;
The working machine frame is a square flat plate, and two guide holes and a chip quantity adjusting hole are formed in the side face of the working machine 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 positions of the chip holes correspond to the positions of the adjusting rod mounting holes;
wherein, the cutter frame includes:
A housing;
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;
The tool bit is in sliding fit with the shell, one end of the tool bit is fixedly connected with the nut, and the other end of the tool bit moves linearly along the guide groove.
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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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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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 true 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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