CN109461507B - Installation device and installation method for high-temperature gas cooled reactor containment vessel sealing support - Google Patents
Installation device and installation method for high-temperature gas cooled reactor containment vessel sealing support Download PDFInfo
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- CN109461507B CN109461507B CN201811110892.5A CN201811110892A CN109461507B CN 109461507 B CN109461507 B CN 109461507B CN 201811110892 A CN201811110892 A CN 201811110892A CN 109461507 B CN109461507 B CN 109461507B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/024—Supporting constructions for pressure vessels or containment vessels
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/028—Seals, e.g. for pressure vessels or containment vessels
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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
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- 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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Abstract
The invention relates to an installation device and an installation method for a containment sealing support of a high-temperature gas cooled reactor, and belongs to the technical field of nuclear power engineering construction. According to the installation device of the containment vessel sealing support, the space inside the structure is utilized, the influence of internal reinforcing steel bars, shielding cooling water pipes, nuclear measurement channels and other items is avoided, the installation, adjustment and fixation of the sealing support are realized through the fine adjustment mechanism and the bolt centering and fixing mechanism, the high-precision requirement of installation is met, and the stability and firmness of the sealing support are guaranteed against the disturbance of post concrete pouring; the method for installing and adjusting the sealing support in the form of parts and blocks solves the problem that the sealing support is difficult to install in place due to complex structure and dense reinforcing steel bars. The mounting device and the mounting method are simple, convenient and feasible to operate, ensure the mounting quality of the complete shell sealing support, improve the mounting work efficiency, and can be popularized and applied to the mounting of large-scale horizontal embedded parts in other engineering fields.
Description
Technical Field
The invention relates to an installation device and an installation method for a containment sealing support of a high-temperature gas cooled reactor, and belongs to the technical field of nuclear power engineering construction.
Background
The high-temperature gas cooled reactor nuclear power plant is an advanced nuclear power technology which has independent intellectual property rights and fourth-generation technical characteristics in China, and is one of sixteen major scientific and technological specialties in China. The reactor containment is an important safety barrier of a primary loop system, and the containment top sealing support plays a key role in connecting the containment cabin wall and the sealing cover plate, and has the characteristics of high installation precision and complex construction environment.
As shown in fig. 1(a), the containment top seal support 1 is located on the top of the inside of the pressure vessel cabin and evaporator cabin wall structure 2, and is arranged continuously around the cabin. As shown in fig. 1(b), the sealing support is composed of four parts, namely a sealing member 4, a pressure-bearing member 5, an embedded bolt 6 and a fastening bolt 7. The pressure bearing member 5 is used for supporting the cabin sealing cover plate 3; the embedded bolt 6 and the fastening bolt 7 are connected into a whole for fastening the sealing cover plate; the sealing component is used for placing a sealing ring, so that the cabin wall structure 2 and the cabin sealing cover plate 3 form a closed containment whole.
The three parts of the sealing support (the parts 4-6) are pre-embedded in a cabin wall concrete structure, the cabin wall structure is dense in steel bars, and nuclear measurement pore channels, screen cold water pipes, steel cladding and other items are arranged, so that the difficulty in mounting the sealing support is high. The sealing support is annular (the evaporator chamber is square) at the cabin part of the pressure container, the perimeter is close to 30 meters, and the levelness requirement after installation is less than or equal to 5 mm.
The traditional installation method of the sealing support comprises the steps of installing items in a structure and binding reinforcing steel bars; the sealing support is arranged on the steel reinforcement framework after the whole processing is finished; after the adjustment and installation precision meets the requirements, the steel bar framework is firmly fixed. The traditional mounting method of the sealing support has the following defects and difficulties:
(1) the installation of the sealing support and the binding of the reinforcing steel bars can only be carried out in series, so that the construction period is prolonged.
(2) The sealing support has 4 rows of anchor bars with the longitudinal distance of 200mm and the length of the embedded bolt of 1740mm, and is influenced by dense wall body steel bars and cannot be installed.
(3) The whole levelness of the installation of the sealing support and the verticality adjustment of the embedded bolt are mutually influenced.
(4) The sealing support is fixed through structural steel bars and is easy to be disturbed and displaced by concrete pouring.
In order to ensure that the installation precision of the containment vessel sealing support meets the requirement and accelerate the installation progress, a device and a method for completing the installation of the containment vessel sealing support in a complex structure need to be researched.
Disclosure of Invention
The invention aims to provide a device and a method for installing a containment top sealing support of a high-temperature gas cooled reactor nuclear power station, which are used for solving the difficulty of the traditional construction method, ensuring the installation quality and precision requirements of the containment top sealing support and greatly improving the construction efficiency.
The invention provides an installation device for a containment sealing support of a high-temperature gas cooled reactor, which comprises an upright post, a horizontal beam, a connecting cross beam, a screw nut for adjustment, a supporting channel steel, a vertical fixed column, a horizontal fixed beam and an adjusting centering fixed plate, wherein the upright post is fixed on the horizontal beam; the upright posts and the connecting beams form a supporting frame of the mounting device, and the lower ends of the upright posts are fixed in a wall structure at the top of the containment; the horizontal beam is fixed at the top of the supporting frame and is of a cantilever beam structure, and the screw nut for adjustment and the supporting channel steel are fixed at the cantilever end of the cantilever beam; the lower end of the vertical fixing column is fixed on a connecting cross beam at the cantilever beam end, the horizontal fixing beam is a cantilever beam, one end of the horizontal fixing beam is fixed at the upper end part of the vertical fixing column, the adjusting and centering fixing plate is fixed at the cantilever end of the horizontal fixing beam, and a round hole is formed in the center position of the adjusting and centering fixing plate.
The invention provides an installation method for a containment sealing support of a high-temperature gas cooled reactor, which comprises the following steps:
(1) when the wall structures of the pressure container cabin and the evaporator cabin are constructed to the preset elevation, arranging the installation device as described above, and the specific process is as follows:
arranging upright posts on the inner sides of vertical ribs of a cabin wall, fixedly welding the upright posts with embedded parts embedded on the wall structure, positioning horizontal beams at the tops of the upright posts and overhanging the horizontal beams to the lower parts of the sealing supports, continuously arranging support frames along the periphery of the cabin wall, wherein the distance between every two support frames is about 1.2m, and connecting the support frames into a whole through connecting cross beams;
the upright posts are welded and fixed with embedded parts embedded on a wall concrete structure of the lower cabin, and all the components are welded and connected, so that the overall stability of the supporting frame of the mounting device is ensured;
the cantilever end of the horizontal beam is provided with an adjusting screw rod, a nut and a supporting channel steel, and the adjusting screw rod and the nut corresponding to the sealing part are directly arranged on the upper flange of the horizontal beam; a screw rod and a nut for adjusting corresponding to the pressure-bearing member need to be provided with a supporting channel steel for adjusting the height on the horizontal beam, and then the adjusting screw rod and the nut are arranged on the upper flange of the supporting channel steel;
a vertical fixing column is arranged on a connecting cross beam on one side of the cantilever end of the horizontal beam, a horizontal fixing beam is arranged at the upper end of the vertical fixing column, and the plane position corresponds to the embedded bolt during installation;
(2) the sealing support is manufactured in parts and blocks:
manufacturing a sealing member, a pressure-bearing member, an embedded bolt and a fastening bolt of the sealing support respectively; the chamber part of the pressure container is divided into 6 sections according to 60 parts along the circumference0The length of each divided segment is about 5 m; the evaporator compartment portion is divided into 8 sections, each corner is divided into 1 section separately, and each straight section connected with the corner is divided into 1 section;
(3) the sealing part and the bearing part are positioned and finely adjusted:
adjusting the elevation of an adjusting screw at the lower part of the sealing part to be consistent with the theoretical elevation, then hoisting all the sealing parts to be positioned on the adjusting screw, adjusting the plane position of the sealing part to meet the requirement after the sealing part is positioned in place, then re-measuring the elevation and levelness of the sealing part, if the allowable deviation is exceeded, adjusting through the adjusting screw at the lower part until the allowable deviation is met, fixing the sealing part and the horizontal beam in a spot welding manner, and installing the next step bearing part;
before the pressure-bearing member is installed, the lower embedded bolt is firstly placed at a preset position and is led into a reserved bolt hole of the pressure-bearing member from bottom to top, and at the moment, the pressure-bearing member is not adjusted and fixed;
after the sealing member and the pressure-bearing member are installed and qualified through detection, the pressure-bearing member and the horizontal beam are welded through the additional steel plate to carry out integral fixing work;
(4) measuring and adjusting the center position of a reserved bolt hole to align a centering fixing plate;
the embedded bolt is a part embedded into a concrete structure below the pressure-bearing member, the fastening bolt is a part above the pressure-bearing member and used for subsequently fastening the cabin cover plate, the two parts of bolts are in threaded connection through the finish machining threaded sleeve and penetrate through the reserved bolt hole in the pressure-bearing member, and the central position of the reserved bolt hole after the pressure-bearing member is installed is used as a reference coordinate for bolt installation;
measuring the central coordinate of each reserved bolt hole on the pressure-bearing member through a total station, measuring and placing a cross positioning center line of the reserved bolt hole coordinate on the horizontal fixed beam, forming a phi 60 round hole on the horizontal fixed beam by taking the central coordinate as the circle center, measuring and placing a cross center line on the adjusting centering fixed plate, machining the round hole with the cross center as the circle center and forming a phi 38 round hole, wherein the size of the fastening bolt is phi 36;
(5) installing a fastening bolt, and adjusting and fixing the verticality;
penetrating a fastening bolt into a phi 60 round hole in a horizontal fixing beam 15 to enable the fastening bolt to be connected with an embedded bolt into a whole, penetrating the fastening bolt through an adjusting centering fixing plate and placing the adjusting centering fixing plate on the horizontal fixing beam, adjusting the adjusting centering fixing plate to enable a cross center line to be coincident with a cross center line on the horizontal fixing beam, enabling the center coordinates of the top and the lower part of the fastening bolt to be consistent, so that the verticality of the fastening bolt is ensured, welding the adjusting centering fixing plate and the horizontal fixing beam together after the adjustment is qualified, welding the embedded bolt and a pressure-bearing part together, and completing the final fixing of the embedded bolt 7 and the fastening bolt 8;
(6) the sealing support is welded into a whole:
and after the containment vessel sealing support is installed and qualified through inspection, and is fixedly fixed with the installation device, pouring wall concrete and welding splicing welding seams among the sealing support blocks are carried out, and finally the complete containment vessel sealing support is formed.
The invention provides a mounting device and a mounting method for a high-temperature gas cooled reactor containment vessel sealing support, which have the advantages that:
the installation device of the containment vessel sealing support provided by the invention fully utilizes the space inside the structure, avoids the influence of internal reinforcing steel bars, shielding cooling water pipes, nuclear measurement channels and other items, and achieves the high-precision requirement of installation by installing, adjusting and fixing the sealing support through the fine adjustment mechanism and the bolt centering and fixing mechanism, thereby ensuring the stability and firmness of the sealing support not to be disturbed by post-concrete pouring; the method for installing and adjusting the sealing support in the form of parts and blocks solves the problem that the sealing support is difficult to install in place due to complex structure and dense reinforcing steel bars. The installation device and the installation method successfully solve the difficulties of positioning, installation precision adjustment and support fixing of the containment sealing support of the high-temperature gas cooled reactor nuclear power station, are simple, convenient and feasible to operate, ensure the installation quality of the complete shell sealing support, improve the installation efficiency, and can be popularized and applied to the installation of large-scale horizontal embedded components in other engineering fields.
Drawings
FIG. 1 is a schematic view of the top structure arrangement of the containment vessel according to the present invention.
Fig. 2 is a schematic structural diagram of the mounting device for the containment.
FIG. 3 is a schematic diagram of the connection relationship between the containment seal support and the installation device of the high temperature gas cooled reactor of the present invention.
Fig. 4 is an enlarged view of the bolt centering and fixing mechanism in the mounting device of the present invention.
Fig. 5 is a floor plan of the mounting device of the present invention.
In fig. 1 to 5, 1 is a sealing support, 2 is a wall structure, 3 is a sealing cover plate, 4 is a sealing member, 5 is a pressure-bearing member, 6 is a sealing rivet, 7 is an embedded bolt, 8 is a fastening bolt, 9 is an upright post, 10 is a horizontal beam, 11 is a connecting cross beam, 12 is a screw and a nut for adjustment, 13 is a supporting channel steel, 14 is a vertical fixing column, 15 is a horizontal fixing beam, and 16 is an adjusting centering fixing plate.
Detailed Description
The structure of the mounting device for the containment sealing support of the high-temperature gas cooled reactor is shown in fig. 2, and the mounting device comprises an upright post 9, a horizontal beam 10, a connecting cross beam 11, a screw nut 12 for adjustment, a supporting channel steel 13, a vertical fixing post 14, a horizontal fixing beam 15 and an adjusting centering fixing plate 16. The upright posts 9 and the connecting cross beams 11 form a supporting frame of the mounting device, and the lower ends of the upright posts 9 are fixed in the wall structure 2 at the top of the containment. The horizontal beam 10 is fixed on the top of the supporting frame, the horizontal beam 10 is a cantilever beam structure, and the screw nut 12 for adjustment and the supporting channel steel 13 are fixed on the cantilever end of the cantilever beam. The lower ends of the vertical fixing columns 14 are fixed on the connecting cross beam 11 at the cantilever beam end. The horizontal fixed beam 15 is a cantilever beam, one end of the horizontal fixed beam 15 is fixed at the upper end part of the vertical fixed column 14, the adjusting and centering fixed plate 16 is fixed at the cantilever end of the horizontal fixed beam 15, and a round hole is formed in the center position of the adjusting and centering fixed plate 16.
The invention provides an installation method for a containment sealing support of a high-temperature gas cooled reactor, which comprises the following steps:
(1) when the wall structures of the pressure container cabin and the evaporator cabin are constructed to the preset elevation, arranging the installation device as described above, and the specific process is as follows:
as shown in fig. 2, the upright posts 9 are arranged at the inner sides of the vertical ribs of the cabin wall, the upright posts 9 are welded and fixed with embedded parts buried in the wall structure, the horizontal beams 10 are positioned at the tops of the upright posts and are cantilevered to the lower parts of the sealing supports, the support frames are continuously arranged along the periphery of the cabin wall, the plane arrangement is as shown in fig. 5, the distance between every two support frames is about 1.2m, and the support frames are connected into a whole through connecting cross beams 11;
the upright post 11 is welded and fixed with an embedded part embedded on a wall concrete structure of a lower cabin, all the components are welded and connected, and the integral stability of a supporting frame of the mounting device is ensured;
an adjusting screw, a nut 12 and a supporting channel steel 13 are arranged on the cantilever end of the horizontal beam 10, and the adjusting screw and the nut corresponding to the sealing part are directly arranged on the upper flange of the horizontal beam; a screw and a nut for adjusting corresponding to the pressure-bearing member are required to be firstly provided with a supporting channel steel 13 with the height adjusted on a horizontal beam, and then an adjusting screw and a nut 12 are arranged on an upper flange of the supporting channel steel 13;
a vertical fixing column 14 is arranged on a connecting cross beam 11 on one side of a cantilever end of the horizontal beam, a horizontal fixing beam 15 is arranged at the upper end of the vertical fixing column, and the plane position corresponds to the embedded bolt during installation;
(2) the sealing support is manufactured in parts and blocks:
in view of the difficulty in integral installation in place and the difficulty in ensuring the installation precision, the four components of the sealing component 4, the pressure-bearing component 5, the embedded bolt 7 and the fastening bolt 8 of the sealing support 1 are respectively manufactured; meanwhile, each part is processed in a segmented mode according to the shape and the characteristics of the planar arrangement. The segmentation position is shown in FIG. 5, the chamber part of the pressure vessel is divided into 6 segments (Y1-Y6), and the length of each segment which is divided by 60 degrees along the circumference is about 5 m; the evaporator compartment section is divided into 8 sections (Z1-Z8), each corner is divided into 1 section separately, and each straight section connected with the corner is divided into 1 section;
(3) the sealing part and the bearing part are positioned and finely adjusted:
as shown in fig. 3, the elevation of the adjusting screw at the lower part of the sealing member 4 is adjusted to be consistent with the theoretical elevation, then the sealing member 4 is completely hoisted and positioned on the adjusting screw 12, the plane position of the sealing member 4 is adjusted to meet the requirement after the sealing member is positioned in place, the elevation and the levelness of the sealing member 4 are measured again, if the allowable deviation is exceeded, the adjustment is carried out through the adjusting screw 12 at the lower part until the requirement is met, the sealing member 4 and the horizontal beam 10 are fixed by spot welding, and the next floating pressure-bearing member is installed;
the mounting method of the pressure-bearing member 5 is consistent with that of the sealing member 4, before the pressure-bearing member 5 is mounted, the lower embedded bolt 7 is firstly placed into a preset position and is led into a reserved bolt hole of the pressure-bearing member 5 from bottom to top, and at the moment, the adjustment and the fixation are not carried out;
after the sealing member 4 and the pressure-bearing member 5 are installed and qualified through detection, the pressure-bearing member 5 and the horizontal beam 10 are welded through an additional steel plate to carry out integral fixing work;
(4) measuring and adjusting the center position of a reserved bolt hole to align a centering fixing plate;
as shown in fig. 3, the embedded bolt 7 is a part embedded in the concrete structure below the pressure-bearing member 5, the fastening bolt 8 is a part above the pressure-bearing member and used for subsequently fastening the cabin cover plate, the two parts of bolts are connected by a finish machining threaded sleeve and penetrate through a reserved bolt hole on the pressure-bearing member, and the central position of the reserved bolt hole after the pressure-bearing member 5 is installed is used as a reference coordinate for bolt installation;
as shown in fig. 4, the central coordinate of each reserved bolt hole on the pressure-bearing member 5 is measured by a total station, meanwhile, a cross-shaped positioning center line of the reserved bolt hole coordinate is measured and placed on the horizontal fixed beam 15, a round hole with phi 60 is formed in the horizontal fixed beam 15 by taking the central coordinate as the circle center, a cross-shaped center line is measured and placed on the adjusting centering fixed plate 16, a round hole with phi 38 is formed by machining by taking the cross center as the circle center, and the size of the fastening bolt is phi 36;
(5) installing a fastening bolt, and adjusting and fixing the verticality;
penetrating a fastening bolt into a phi 60 round hole in a horizontal fixing beam 15 to enable the fastening bolt 8 and an embedded bolt 7 to be connected into a whole, penetrating an adjusting centering fixing plate 16 into the fastening bolt 8 and placing the fastening bolt on the horizontal fixing beam 15, adjusting the adjusting centering fixing plate 16 to enable a cross center line to coincide with a cross center line on the horizontal fixing beam, enabling the center coordinates of the top and the lower part of the fastening bolt 8 to be consistent, so as to ensure the verticality of the fastening bolt, welding the adjusting centering fixing plate 16 and the horizontal fixing beam 15 together after the adjustment is qualified, welding the embedded bolt and a pressure-bearing component together, and completing the final fixing of the embedded bolt 7 and the fastening bolt 8;
(6) the sealing support is welded into a whole:
and after the containment vessel sealing support is installed and qualified through inspection, and is fixedly fixed with the installation device, pouring wall concrete and welding splicing welding seams among the sealing support blocks are carried out, and finally the complete containment vessel sealing support is formed.
The invention successfully solves the difficulties of positioning, mounting precision adjustment and support fixing of the containment sealing support of the high-temperature gas cooled reactor nuclear power station, has simple, convenient and feasible operation, ensures the mounting quality of the complete containment sealing support, improves the mounting work efficiency, and can be popularized and applied to the mounting of large-scale horizontal embedded components in other engineering fields.
Claims (1)
1. A method for installing a containment sealing support of a high-temperature gas cooled reactor is characterized by comprising the following steps:
(1) arranging a mounting device which comprises an upright post, a horizontal beam, a connecting cross beam, a screw nut for adjustment, a supporting channel steel, a vertical fixed post, a horizontal fixed beam and an adjusting centering fixed plate when the wall structures of the pressure container cabin and the evaporator cabin are constructed to a preset elevation; the upright posts and the connecting beams form a supporting frame of the mounting device, and the lower ends of the upright posts are fixed in a wall structure at the top of the containment; the horizontal beam is fixed at the top of the supporting frame and is of a cantilever beam structure, and the screw nut for adjustment and the supporting channel steel are fixed at the cantilever end of the cantilever beam; the lower end of the vertical fixed column is fixed on a connecting cross beam at the cantilever beam end, the horizontal fixed beam is a cantilever beam, one end of the horizontal fixed beam is fixed at the upper end part of the vertical fixed column, the adjusting and centering fixed plate is fixed at the cantilever end of the horizontal fixed beam, and a round hole is formed in the center position of the adjusting and centering fixed plate;
(2) arranging upright posts on the inner sides of vertical ribs of a cabin wall, fixedly welding the upright posts with embedded parts embedded on the wall structure, positioning horizontal beams at the tops of the upright posts and overhanging the horizontal beams to the lower parts of the sealing supports, continuously arranging support frames along the periphery of the cabin wall, wherein the distance between every two support frames is about 1.2m, and connecting the support frames into a whole through connecting cross beams;
the upright posts are welded and fixed with embedded parts embedded on a wall concrete structure of the lower cabin, and all the components are welded and connected, so that the overall stability of the supporting frame of the mounting device is ensured;
the cantilever end of the horizontal beam is provided with an adjusting screw rod, a nut and a supporting channel steel, and the adjusting screw rod and the nut corresponding to the sealing part are directly arranged on the upper flange of the horizontal beam; a screw rod and a nut for adjusting corresponding to the pressure-bearing member need to be provided with a supporting channel steel for adjusting the height on the horizontal beam, and then the adjusting screw rod and the nut are arranged on the upper flange of the supporting channel steel;
a vertical fixing column is arranged on a connecting cross beam on one side of the cantilever end of the horizontal beam, a horizontal fixing beam is arranged at the upper end of the vertical fixing column, and the plane position corresponds to the embedded bolt during installation;
(3) the sealing support is manufactured in parts and blocks:
manufacturing a sealing member, a pressure-bearing member, an embedded bolt and a fastening bolt of the sealing support respectively; the chamber part of the pressure container is divided into 6 sections according to 60 parts along the circumference0The length of each divided segment is about 5 m; the evaporator compartment portion is divided into 8 sections, each corner is divided into 1 section separately, and each straight section connected with the corner is divided into 1 section;
(4) the sealing part and the bearing part are positioned and finely adjusted:
adjusting the elevation of an adjusting screw at the lower part of the sealing part to be consistent with the theoretical elevation, then hoisting all the sealing parts to be positioned on the adjusting screw, adjusting the plane position of the sealing part to meet the requirement after the sealing part is positioned in place, then re-measuring the elevation and levelness of the sealing part, if the allowable deviation is exceeded, adjusting through the adjusting screw at the lower part until the allowable deviation is met, fixing the sealing part and the horizontal beam in a spot welding manner, and installing the next step bearing part;
before the pressure-bearing member is installed, the lower embedded bolt is firstly placed at a preset position and is led into a reserved bolt hole of the pressure-bearing member from bottom to top, and at the moment, the pressure-bearing member is not adjusted and fixed;
after the sealing member and the pressure-bearing member are installed and qualified through detection, the pressure-bearing member and the horizontal beam are welded through the additional steel plate to carry out integral fixing work;
(5) measuring and adjusting the center position of a reserved bolt hole to align a centering fixing plate;
the embedded bolt is a part embedded into a concrete structure below the pressure-bearing member, the fastening bolt is a part above the pressure-bearing member and used for subsequently fastening the cabin cover plate, the two parts of bolts are in threaded connection through the finish machining threaded sleeve and penetrate through the reserved bolt hole in the pressure-bearing member, and the central position of the reserved bolt hole after the pressure-bearing member is installed is used as a reference coordinate for bolt installation;
measuring the central coordinate of each reserved bolt hole on the pressure-bearing member through a total station, measuring and placing a cross positioning center line of the reserved bolt hole coordinate on the horizontal fixed beam, forming a phi 60 round hole on the horizontal fixed beam by taking the central coordinate as the circle center, measuring and placing a cross center line on the adjusting centering fixed plate, machining the round hole with the cross center as the circle center and forming a phi 38 round hole, wherein the size of the fastening bolt is phi 36;
(6) installing a fastening bolt, and adjusting and fixing the verticality;
penetrating a fastening bolt into a phi 60 round hole in a horizontal fixing beam to enable the fastening bolt to be connected with an embedded bolt into a whole, penetrating the fastening bolt through an adjusting centering fixing plate and placing the fastening bolt on the horizontal fixing beam, adjusting the adjusting centering fixing plate to enable a cross center line to be coincident with a cross center line on the horizontal fixing beam, enabling the center coordinates of the top and the lower part of the fastening bolt to be consistent, so that the verticality of the fastening bolt is ensured, welding the adjusting centering fixing plate and the horizontal fixing beam together after the adjustment is qualified, welding the embedded bolt and a pressure-bearing part together, and completing the final fixing of the embedded bolt and the fastening bolt;
(7) the sealing support is welded into a whole:
and after the containment vessel sealing support is installed and qualified through inspection, and is fixedly fixed with the installation device, pouring wall concrete and welding splicing welding seams among the sealing support blocks are carried out, and finally the complete containment vessel sealing support is formed.
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| CN201811110892.5A CN109461507B (en) | 2018-09-22 | 2018-09-22 | Installation device and installation method for high-temperature gas cooled reactor containment vessel sealing support |
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| CN106223524A (en) * | 2016-07-21 | 2016-12-14 | 中核能源科技有限公司 | Reactor, vaporizer cabin detachable sandwich steel plate concrete cover plate |
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| CN109461507A (en) | 2019-03-12 |
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