CN107351011B - Device for replacing hole plug sealing piece of bolt hole of pressure container - Google Patents
Device for replacing hole plug sealing piece of bolt hole of pressure container Download PDFInfo
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- CN107351011B CN107351011B CN201710207139.7A CN201710207139A CN107351011B CN 107351011 B CN107351011 B CN 107351011B CN 201710207139 A CN201710207139 A CN 201710207139A CN 107351011 B CN107351011 B CN 107351011B
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- bolt hole
- jacking
- rod
- guide plate
- pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0028—Tools for removing or installing seals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention belongs to the technical field of nuclear power station maintenance, and particularly relates to a device for replacing a sealing element of a pressure vessel bolt hole plug, aiming at developing a device for replacing a sealing element of a pressure vessel bolt hole plug, which is used for disassembling and assembling a sealing element of a pressure vessel bolt hole plug and replacing the sealing element, and optimizing operation procedures and maintenance quality. The method is characterized in that: the device comprises a pressing mechanism, a locking mechanism, a supporting mechanism and a jacking mechanism; the pressing mechanism is arranged at the upper part of the supporting mechanism and is positioned above the bolt hole sealing plug; the locking mechanism is arranged in the middle of the supporting mechanism and positioned on two sides of the bolt hole sealing plug; the jacking mechanism is arranged at the lower part of the supporting mechanism and is positioned below the bolt hole sealing plug. The invention reduces the labor cost and improves the working efficiency. Meanwhile, the device has the advantages of compact structure, light dead weight, simplicity in operation, no high technical requirement on operators and strong practicability.
Description
Technical Field
The invention belongs to the technical field of nuclear power station maintenance, and particularly relates to a device for replacing a sealing element of a bolt hole plug of a pressure vessel.
Background
In a pressurized water reactor nuclear power plant, under the condition that a reactor refueling water tank is filled with water, in order to prevent coolant from entering a bolt hole to cause corrosion of the bolt hole, a sealing plug is required to be installed in the bolt hole, and the structure of the sealing plug is shown in fig. 1 and 2 and comprises an upper end plug 5, a movable plate 6, a lower end plug 7, a spring 8, a positioning pin 9, a pin 10, an inner ring 11, an outer ring 12 and a small sealing ring 13. The bolt hole sealing plug is arranged in the screw hole, 3 sealing rings are used for sealing, the sealing rings are made of butadiene-acrylonitrile rubber, and the sealing rings are easy to age and swell under the soaking of high-radiation boric acid water, so that the sealing effect is influenced. Therefore, the sealing plug needs to be periodically disassembled to replace the sealing ring.
The existing dismounting mode is multi-person cooperation and manual operation, more labor force needs to be occupied, and the mounting quality of the sealing element is difficult to ensure.
Disclosure of Invention
The invention aims to develop a device for replacing a sealing element of a bolt hole plug of a pressure container, which is used for disassembling and assembling the bolt hole sealing plug of the pressure container and replacing the sealing element, and optimizes the operation process and the maintenance quality.
The invention is realized by the following steps:
a device for replacing a sealing element of a hole plug of a bolt hole of a pressure container comprises a pressing mechanism, a locking mechanism, a supporting mechanism and a jacking mechanism; the pressing mechanism is arranged on the upper part of the supporting mechanism and is positioned above the bolt hole sealing plug; the locking mechanism is arranged in the middle of the supporting mechanism and positioned on two sides of the bolt hole sealing plug; the jacking mechanism is arranged at the lower part of the supporting mechanism and is positioned below the bolt hole sealing plug.
The whole supporting mechanism is of a frame structure and comprises an upper cross beam, a long supporting leg, a middle cross beam, a base, a short supporting leg, a jacking bottom plate and a guide plate; the upper cross beam is horizontally arranged, the left end and the right end of the upper cross beam are respectively fixedly connected with the upper ends of the two long supporting legs, and the middle part of the upper cross beam is provided with a mounting hole for mounting the pressing mechanism; the lower part of the long supporting leg is provided with a mounting hole, and the height of the mounting hole is greater than that of the base and used for fixing the locking mechanism; the middle cross beam is horizontally arranged, the left end and the right end of the middle cross beam are respectively fixedly connected with the upper parts of the two long supporting legs, and the middle part of the middle cross beam is provided with a through hole for limiting the movement of the pressing mechanism; the left end and the right end of the base are respectively fixedly connected with the lower parts of the two long supporting legs, and the front end and the rear end of the base are respectively fixedly connected with the upper ends of the two short supporting legs; the lower part of the short supporting leg is provided with a mounting hole for mounting a jacking mechanism; the front end and the rear end of the jacking bottom plate are respectively fixedly connected with the lower ends of the two short supporting legs; the guide plate is fixed at the upper end of the middle part of the jacking bottom plate, is positioned under the base and is used for limiting the movement of the jacking mechanism; the support mechanism is used to provide structural support to the overall device.
The main body part of the base is in a ring shape, and the central position of the ring shape and the guide plate are positioned on the same axis; an annular bulge is arranged on the inner wall of the base, the thickness of the annular bulge is smaller than that of the main body part, and the annular bulge is used for fixing the bolt hole sealing plug; the direction bulges are arranged on the outer wall of the main body part of the base along the front direction, the rear direction, the left direction and the right direction respectively and are used for being fixedly connected with the long supporting leg and the short supporting leg respectively.
The whole guide plate is in an inverted U shape, the lower end of the guide plate is fixedly connected with the jacking bottom plate, the central position of the upper end of the guide plate is provided with a through hole, and the position of the through hole and the circular central position of the base are positioned on the same axis and used for penetrating through the jacking mechanism and limiting the movement of the jacking mechanism; two mounting holes are respectively formed in the lower portions of the front end face and the rear end face of the guide plate, and the two mounting holes and the mounting holes formed in the lower portions of the short supporting legs are located on the same horizontal line and used for mounting the jacking mechanism.
The pressing mechanism comprises an operating rod, a crank, a connecting rod and a pressing rod; the rear end of the operating rod is fixedly connected with the front end of the crank; the upper end of the crank is movably connected with the upper cross beam through a mounting hole in the middle of the upper cross beam, and the bent part is movably connected with the upper end of the connecting rod; the lower end of the connecting rod is movably connected with the upper end of the pressing rod; the pressing rod penetrates through the through hole in the middle of the middle cross beam, and the lower end of the pressing rod is provided with an oblate pressing head used for pressing the bolt hole sealing plug from the upper side.
The locking mechanism comprises a pin cylinder, an operating rod, a locking pin and a spring; the spring is sleeved on the locking pin; the pin cylinder is sleeved on the locking pin and the spring; the operating rod is arranged at one end of the locking pin; the locking mechanism is used for radially fixing the bolt hole sealing plug.
The whole locking pin is of a two-section structure, the left section and the right section are both cylindrical, and the diameter of the right section is larger than that of the left section; the left end of the left section of the locking pin is provided with a circular through hole for mounting an operating rod; a flat head is processed at the right end of the right section and used for fixing a bolt hole sealing plug; the spring is sleeved on the left section of the locking pin, and the right end of the spring is in close contact with the right section of the locking pin.
The pin barrel is divided into a left part and a right part, and the left part and the right part are both hollow cylinders; the inner diameter of the left part of the pin cylinder is matched with the diameter of the left section of the locking pin, and the inner diameter of the right part of the pin cylinder is matched with the diameter of the right section of the locking pin; two strip-shaped grooves are symmetrically formed in the left end of the left part of the pin cylinder along the axial direction and used for accommodating the operating rod; two semicircular grooves are symmetrically formed in the positions, rotated by 90 degrees, of the two grooves and used for fixing the operating rod; the right part of the pin cylinder penetrates through the mounting hole of the long supporting leg, and a fixing flange is arranged on the outer wall of the connecting section of the left part and the right part of the pin cylinder and used for fixing the pin cylinder on the mounting hole of the long supporting leg.
The jacking mechanism comprises a handle, a transmission rod, a connecting rod and a jacking rod; the handle is positioned at the front end of the short leg; the front end of the transmission rod passes through the mounting hole of the short supporting leg, is movably connected with the short supporting leg and is fixedly connected with the handle; the rear end of the guide plate penetrates through the two mounting holes on the front end surface and the rear end surface of the guide plate in sequence and is movably connected with the guide plate; the rear part of the transmission rod is movably connected with the lower end of the connecting rod; the upper end of the connecting rod is movably connected with the lower end of the jacking rod; the upper end of the jacking rod penetrates through a through hole in the upper end of the guide plate and is used for jacking the bolt hole sealing plug from the lower part.
The pressing mechanism, the locking mechanism, the supporting mechanism and the jacking mechanism are all made of 45# steel, and the corrosion resistance of the surface is improved through phosphating and blackening; the outer surfaces of the compression rod and the jacking rod are made of nylon materials, so that a lubricating effect is achieved, and the hole shaft is prevented from being clamped in a matching action.
The invention has the beneficial effects that:
the invention provides an operation platform for the replacement work of the bolt hole sealing plug sealing element, so that the maintenance work is more formalized and specialized. The disassembly and the reinstallation of the sealing element use a crank sliding block mechanism, namely a pressing mechanism and a jacking mechanism, so that labor is saved. In the past, two persons are needed to cooperate and disassemble, and after the replacing device is used, the replacing work of the sealing element can be easily completed by only one person. The invention and the use of the device reduce the labor cost and improve the working efficiency. Meanwhile, the device has the advantages of compact structure, light dead weight, simplicity in operation, no high technical requirement on operators and strong practicability.
Drawings
FIG. 1 is a front cross-sectional view of a bolt hole sealing plug;
FIG. 2 is a top view of the bolt hole sealing plug;
FIG. 3 is a schematic view of the pressure vessel bolt hole plug seal changing apparatus of the present invention;
FIG. 4 is a schematic structural view of a support mechanism of the pressure vessel bolt hole plug seal replacing apparatus of the present invention;
FIG. 5 is a schematic structural view of a pressing mechanism of the pressure vessel bolt hole plug seal replacing device of the present invention;
FIG. 6 is a schematic structural view of a locking mechanism of the pressure vessel bolt hole plug seal replacing apparatus of the present invention;
FIG. 7 is a schematic view of the internal structure of the locking mechanism of the apparatus for replacing a plug seal in a bolt hole of a pressure vessel according to the present invention;
FIG. 8 is a schematic structural view of a jacking mechanism of the pressure vessel bolt hole plug seal replacing device of the present invention;
wherein: 1. the device comprises a pressing mechanism, a locking mechanism, a supporting mechanism, a jacking mechanism, a lifting mechanism, an upper end plug, a movable plate, a lower end plug, a spring, a positioning pin, a pin, 11, an inner ring, 12, an outer ring, 13, a small sealing ring, 101, an operating rod, 102, a crank, 103, a connecting rod, 104, a pressing rod, 201, a pin cylinder, 202, an operating rod, 203, a locking pin, 204, a spring, 301, an upper cross beam, 302, a long leg, 303, a middle cross beam, 304, a base, 305, a short leg, 306, a jacking bottom plate, 307, a guide plate, 401, a handle, 402, a transmission rod, 403, a connecting rod and 404, a jacking rod.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 3, the device for replacing the hole plug sealing element of the bolt hole of the pressure vessel comprises a pressing mechanism 1, a locking mechanism 2, a supporting mechanism 3 and a jacking mechanism 4. The pressing mechanism 1 is arranged on the upper part of the supporting mechanism 3 and is positioned above the bolt hole sealing plug. The locking mechanism 2 is arranged in the middle of the supporting mechanism 3 and positioned on two sides of the bolt hole sealing plug. The jacking mechanism 4 is arranged at the lower part of the supporting mechanism 3 and is positioned below the bolt hole sealing plug.
As shown in fig. 4, the support mechanism 3 is a frame structure as a whole, and includes an upper cross member 301, a long leg 302, a middle cross member 303, a base 304, a short leg 305, a jacking bottom plate 306, and a guide plate 307. The upper beam 301 is horizontally arranged, the left end and the right end are respectively fixedly connected with the upper ends of the two long supporting legs 302, and the middle part of the upper beam is provided with a mounting hole for mounting the pressing mechanism 1. The lower part of the long supporting leg 302 is provided with a mounting hole, and the height of the mounting hole is larger than that of the base 304, so as to fix the locking mechanism 2. The middle cross beam 303 is horizontally arranged, the left end and the right end of the middle cross beam are respectively fixedly connected with the upper parts of the two long supporting legs 302, and the middle part of the middle cross beam is provided with a through hole for limiting the movement of the pressing mechanism 1. The left and right ends of the base 304 are fixedly connected to the lower portions of the two long legs 302, and the front and rear ends are fixedly connected to the upper ends of the two short legs 305. The lower part of the short leg 305 is provided with a mounting hole for mounting the jacking mechanism 4. The front end and the rear end of the jacking bottom plate 306 are respectively fixedly connected with the lower ends of the two short supporting legs 305. The guide plate 307 is fixed to the upper end of the middle part of the jacking bottom plate 306, and is located right below the base 304, and is used for limiting the movement of the jacking mechanism 4. The support mechanism 3 is used to provide structural support to the overall device.
The main body of the base 304 is circular ring, and the center of the circular ring is located on the same axis as the guide plate 307. An annular bulge is arranged on the inner wall of the base 304, and the thickness of the annular bulge is smaller than that of the main body part and used for fixing the bolt hole sealing plug. The outer wall of the main body portion of the base 304 is provided with direction protrusions in the front, rear, left and right directions, respectively, for fixedly connecting with the long leg 302 and the short leg 305, respectively.
The guide plate 307 is an inverted U-shaped whole, the lower end of the guide plate is fixedly connected with the jacking bottom plate 306, the central position of the upper end of the guide plate is provided with a through hole, and the position of the through hole and the circular central position of the base 304 are on the same axis and used for penetrating through the jacking mechanism 4 and limiting the movement of the jacking mechanism 4. Two mounting holes are respectively formed in the lower portions of the front and rear end surfaces of the guide plate 307, and the two mounting holes are located on the same horizontal line as the mounting holes formed in the lower portions of the short legs 305, and are used for mounting the jacking mechanism 4.
As shown in fig. 5, the pressing mechanism 1 includes an operating lever 101, a crank 102, a link 103, and a pressing lever 104. The rear end of the operating rod 101 is fixedly connected to the front end of the crank 102. The upper end of the crank 102 is movably connected with the upper cross beam 301 through a mounting hole in the middle of the upper cross beam 301, and the bent part is movably connected with the upper end of the connecting rod 103. The lower end of the connecting rod 103 is movably connected with the upper end of the pressing rod 104. The hold-down bar 104 passes through a through hole in the middle of the middle cross beam 303, and the lower end is provided with an oblate hold-down head for holding down the bolt hole sealing plug from above.
As shown in fig. 6, the lock mechanism 2 includes a pin cylinder 201, an operation lever 202, a lock pin 203, and a spring 204. The spring 204 is fitted over the locking pin 203. The pin barrel 201 is sleeved on the locking pin 203 and the spring 204. The operating lever 202 is installed at one end of the locking pin 203. The locking mechanism 2 is used to radially secure the bolt hole sealing plug.
The whole locking pin 203 is of a two-section structure, the left section and the right section are both cylindrical, and the diameter of the right section is larger than that of the left section. A circular through hole is formed in the left end of the left section of the locking pin 203 and used for installing the operating rod 202; and a flat head is processed at the right end of the right section and used for fixing a bolt hole sealing plug. The spring 204 is sleeved on the left section of the locking pin 203, and the right end of the spring 204 is in close contact with the right section of the locking pin 203.
As shown in fig. 7, the pin cylinder 201 is divided into left and right portions, and each of the left and right portions has a hollow cylindrical shape. The inner diameter of the left part of the pin cylinder 201 is matched with the diameter of the left section of the locking pin 203, and the inner diameter of the right part of the pin cylinder 201 is matched with the diameter of the right section of the locking pin 203. Two strip-shaped grooves are symmetrically formed in the left end of the left part of the pin cylinder 201 along the axial direction and used for accommodating the operating rod 202; two semicircular grooves are symmetrically formed in the positions, rotated by 90 degrees, of the two grooves and used for fixing the operating rod 202. The right part of the pin cylinder 201 penetrates through the mounting hole of the long leg 302, and a fixing flange is arranged on the outer wall of the connecting section of the left part and the right part of the pin cylinder 201 and used for fixing the pin cylinder 201 on the mounting hole of the long leg 302.
The assembly sequence of the locking mechanism 2 is: firstly, sleeving the spring 204 on the left section of the locking pin 203, so that the right end of the spring 204 is tightly contacted with the right section of the locking pin 203; then the pin cylinder 201 is sleeved on the locking pin 203 from left to right, and the left end of the spring 204 is in close contact with the left part of the pin cylinder 201; continuing to push the locking pin 203 to the left, so that the locking pin 203 continues to move to the left against the spring force of the spring 204; when the round through hole at the left end of the locking pin 203 is exposed out of the pin cylinder 201 from the strip-shaped groove at the left part of the pin cylinder 201, the operating rod 202 is arranged on the round through hole; pulling the operating rod 202 to the left, and rotating the operating rod 202 by 90 degrees when the operating rod 202 is completely moved to the outside of the pin cylinder 201; at this time, the operating lever 202 is fixed in the semicircular groove at the left portion of the pin cylinder 201 by the restoring force of the spring 204. When the bolt hole sealing plug needs to be fixed, the operating rod 202 is pulled out leftwards and rotated by 90 degrees. At this time, under the action of the restoring force of the spring 204, the locking pin 203 drives the operating rod 202 to move rightwards, and the flat head of the locking pin 203 tightly props against the bolt hole sealing plug, so that the bolt hole sealing plug is fixed.
As shown in fig. 8, the jack 4 includes a handle 401, a transmission rod 402, a link 403, and a jack bar 404. A handle 401 is located at the front end of the short leg 305. The front end of the transmission rod 402 passes through the mounting hole of the short leg 305, is movably connected with the short leg 305, and is fixedly connected with the handle 401. The rear end of the guide plate 307 passes through two mounting holes on the front and rear end surfaces of the guide plate 307 in sequence and is movably connected with the guide plate 307. The rear part of the transmission rod 402 is movably connected with the lower end of the connecting rod 403. The upper end of the connecting rod 403 is movably connected with the lower end of the jacking rod 404. The upper end of the jacking rod 404 passes through the through hole at the upper end of the guide plate 307 for jacking the bolt hole sealing plug from below.
In this embodiment, the pressing mechanism 1, the locking mechanism 2, the supporting mechanism 3 and the jacking mechanism 4 are all made of 45# steel, and the corrosion resistance of the surface is improved through phosphating and blackening. The outer surfaces of the pressing rod 104 and the jacking rod 404 are made of nylon materials, so that a lubricating effect is achieved, and the hole shaft is prevented from being jammed in matching action.
The working principle of the device is as follows:
the upper end plug 5 of the bolt hole sealing plug is horizontally placed on the base 304 of the supporting mechanism 3; pressing and keeping the pressing mechanism 1 downwards, overcoming the acting force of the spring 8 and removing the pin 10; lifting the pressing mechanism 1, removing the lower end plug 7 and the spring 8, and removing the inner ring 11 and the outer ring 12; rotating the operating lever 202 of the locking mechanism 2 by 90 degrees so that the locking pin 203 is extended, thereby fixing the outer surface of the upper end plug 5; rotating a handle 401 of the jacking mechanism 4 to eject the flap 6 from the center; taking down the movable plate 6 and withdrawing the jacking mechanism 4; the operation lever 202 pulls back the lock pin 203 of the lock mechanism 2, and the operation lever 202 is rotated by 90 degrees to fix the lock pin 203. Thus, the bolt hole sealing plug is completely disassembled.
The method of carrying out the present invention has been described in detail with reference to the examples, but the present invention is not limited to the examples, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. The prior art can be adopted for the content which is not described in detail in the specification of the invention.
Claims (9)
1. The utility model provides a device is changed to pressure vessel bolt hole stopple sealing member which characterized in that: the device comprises a pressing mechanism (1), a locking mechanism (2), a supporting mechanism (3) and a jacking mechanism (4); the pressing mechanism (1) is arranged on the upper part of the supporting mechanism (3) and is positioned above the bolt hole sealing plug; the locking mechanism (2) is arranged in the middle of the supporting mechanism (3) and positioned on two sides of the bolt hole sealing plug; the jacking mechanism (4) is arranged at the lower part of the supporting mechanism (3) and is positioned below the bolt hole sealing plug; the supporting mechanism (3) is of a frame structure integrally and comprises an upper cross beam (301), a long supporting leg (302), a middle cross beam (303), a base (304), a short supporting leg (305), a jacking bottom plate (306) and a guide plate (307); the upper cross beam (301) is horizontally arranged, the left end and the right end are respectively fixedly connected with the upper ends of the two long supporting legs (302), and the middle part of the upper cross beam is provided with a mounting hole for mounting the pressing mechanism (1); the lower part of the long supporting leg (302) is provided with a mounting hole, and the height of the mounting hole is greater than that of the base (304) and used for fixing the locking mechanism (2); the middle cross beam (303) is horizontally arranged, the left end and the right end of the middle cross beam are respectively fixedly connected with the upper parts of the two long supporting legs (302), and the middle part of the middle cross beam is provided with a through hole for limiting the movement of the pressing mechanism (1); the left end and the right end of the base (304) are respectively fixedly connected with the lower parts of the two long supporting legs (302), and the front end and the rear end are respectively fixedly connected with the upper ends of the two short supporting legs (305); the lower part of the short supporting leg (305) is provided with a mounting hole for mounting the jacking mechanism (4); the front end and the rear end of the jacking bottom plate (306) are respectively and fixedly connected with the lower ends of the two short supporting legs (305); the guide plate (307) is fixed at the upper end of the middle part of the jacking bottom plate (306), is positioned right below the base (304), and is used for limiting the movement of the jacking mechanism (4); the support mechanism (3) is used to provide structural support to the entire device.
2. The pressure vessel bolt hole plug seal replacement device of claim 1, wherein: the main body part of the base (304) is in a circular ring shape, and the central position of the circular ring shape and the guide plate (307) are positioned on the same axis; an annular bulge is arranged on the inner wall of the base (304), the thickness of the annular bulge is smaller than that of the main body part, and the annular bulge is used for fixing the bolt hole sealing plug; the outer wall of the main body part of the base (304) is respectively provided with direction bulges along the front direction, the rear direction, the left direction and the right direction and is respectively used for being fixedly connected with the long supporting leg (302) and the short supporting leg (305).
3. The pressure vessel bolt hole plug seal replacement device of claim 2, wherein: the whole guide plate (307) is in an inverted U shape, the lower end of the guide plate is fixedly connected with the jacking bottom plate (306), the central position of the upper end of the guide plate is provided with a through hole, and the position of the through hole and the circular central position of the base (304) are positioned on the same axis and used for penetrating through the jacking mechanism (4) and limiting the movement of the jacking mechanism (4); two mounting holes are respectively formed in the lower portions of the front end surface and the rear end surface of the guide plate (307), and the two mounting holes and the mounting holes formed in the lower portions of the short supporting legs (305) are located on the same horizontal line and used for mounting the jacking mechanism (4).
4. The pressure vessel bolt hole plug seal replacement device of claim 3, wherein: the pressing mechanism (1) comprises an operating rod (101), a crank (102), a connecting rod (103) and a pressing rod (104); the rear end of the operating rod (101) is fixedly connected with the front end of the crank (102); the upper end of the crank (102) is movably connected with the upper cross beam (301) through a mounting hole in the middle of the upper cross beam (301), and the bent part is movably connected with the upper end of the connecting rod (103); the lower end of the connecting rod (103) is movably connected with the upper end of the pressing rod (104); the pressing rod (104) penetrates through a through hole in the middle of the middle cross beam (303), and an oblate pressing head is arranged at the lower end of the pressing rod and used for pressing the bolt hole sealing plug from the upper side.
5. The pressure vessel bolt hole plug seal replacement device of claim 1, wherein: the locking mechanism (2) comprises a pin cylinder (201), an operating rod (202), a locking pin (203) and a spring (204); the spring (204) is sleeved on the locking pin (203); the pin cylinder (201) is sleeved on the locking pin (203) and the spring (204); the operating rod (202) is arranged at one end of the locking pin (203); the locking mechanism (2) is used for radially fixing the bolt hole sealing plug.
6. The pressure vessel bolt hole plug seal replacement device of claim 5, wherein: the whole locking pin (203) is of a two-section structure, the left section and the right section are both cylindrical, and the diameter of the right section is larger than that of the left section; a circular through hole is formed in the left end of the left section of the locking pin (203) and used for mounting the operating rod (202); a flat head is processed at the right end of the right section and used for fixing a bolt hole sealing plug; the spring (204) is sleeved on the left section of the locking pin (203), and the right end of the spring (204) is in close contact with the right section of the locking pin (203).
7. The pressure vessel bolt hole plug seal replacement device of claim 6, wherein: the pin cylinder (201) is divided into a left part and a right part, and the left part and the right part are both hollow cylinders; the inner diameter of the left part of the pin cylinder (201) is matched with the diameter of the left section of the locking pin (203), and the inner diameter of the right part of the pin cylinder (201) is matched with the diameter of the right section of the locking pin (203); two strip-shaped grooves are symmetrically formed in the left end of the left part of the pin cylinder (201) along the axial direction and used for accommodating the operating rod (202); two semicircular grooves are symmetrically formed in the positions, rotated by 90 degrees, of the two grooves and used for fixing the operating rod (202); the right part of the pin cylinder (201) penetrates through the mounting hole of the long supporting leg (302), and fixing flanges are arranged on the outer walls of the connecting sections of the left part and the right part of the pin cylinder (201) and used for fixing the pin cylinder (201) on the mounting hole of the long supporting leg (302).
8. The pressure vessel bolt hole plug seal replacement device of claim 4, wherein: the jacking mechanism (4) comprises a handle (401), a transmission rod (402), a connecting rod (403) and a jacking rod (404); the handle (401) is positioned at the front end of the short supporting leg (305); the front end of the transmission rod (402) penetrates through the mounting hole of the short supporting leg (305), is movably connected with the short supporting leg (305), and is fixedly connected with the handle (401); the rear end of the guide plate (307) sequentially passes through two mounting holes on the front end surface and the rear end surface of the guide plate (307) and is movably connected with the guide plate (307); the rear part of the transmission rod (402) is movably connected with the lower end of the connecting rod (403); the upper end of the connecting rod (403) is movably connected with the lower end of the jacking rod (404); the upper end of the jacking rod (404) passes through a through hole at the upper end of the guide plate (307) and is used for jacking the bolt hole sealing plug from the lower part.
9. The pressure vessel bolt hole plug seal replacement device of claim 8, wherein: the pressing mechanism (1), the locking mechanism (2), the supporting mechanism (3) and the jacking mechanism (4) are all made of No. 45 steel, and the corrosion resistance of the surface is improved through phosphating and blackening; the outer surfaces of the pressing rod (104) and the jacking rod (404) are made of nylon materials, so that a lubricating effect is achieved, and the hole shaft is prevented from being clamped in a matching action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207139.7A CN107351011B (en) | 2017-03-31 | 2017-03-31 | Device for replacing hole plug sealing piece of bolt hole of pressure container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207139.7A CN107351011B (en) | 2017-03-31 | 2017-03-31 | Device for replacing hole plug sealing piece of bolt hole of pressure container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107351011A CN107351011A (en) | 2017-11-17 |
| CN107351011B true CN107351011B (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710207139.7A Active CN107351011B (en) | 2017-03-31 | 2017-03-31 | Device for replacing hole plug sealing piece of bolt hole of pressure container |
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| CN (1) | CN107351011B (en) |
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|---|---|---|---|---|
| CN110385670B (en) * | 2019-07-26 | 2021-04-20 | 中车贵阳车辆有限公司 | Brake adjuster sleeve body splitting device |
| CN112082713A (en) * | 2020-08-20 | 2020-12-15 | 苏泽然 | Canned food leakproofness check out test set |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200161479Y1 (en) * | 1996-12-28 | 1999-11-15 | 김영환 | Sealing ring removal apparatus |
| US6615467B1 (en) * | 2000-11-24 | 2003-09-09 | Gary Richards | Valve press tool |
| CN102117665B (en) * | 2009-12-31 | 2013-01-02 | 中国核动力研究设计院 | Sealing plug for kingbolt hole of reactor pressure vessel and operation tool thereof |
| CN103659234A (en) * | 2013-11-26 | 2014-03-26 | 山西浩业通用设备有限公司 | Hydraulic type oil cylinder guide sleeve demounting and mounting machine |
| CN203751662U (en) * | 2014-01-13 | 2014-08-06 | 肇庆理士电源技术有限公司 | Battery cover insert dismounting device |
| CN204525327U (en) * | 2015-01-13 | 2015-08-05 | 上海发电设备成套设计研究院 | A kind of for pressing the provision for disengagement of electrical penetration sealing ring in nuclear power station |
| CN206998761U (en) * | 2017-03-31 | 2018-02-13 | 中核核电运行管理有限公司 | Pressure vessel bolt hole stopple seal more changing device |
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2017
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