CN114822890B - Nuclear power station equipment gate installation method - Google Patents
Nuclear power station equipment gate installation method Download PDFInfo
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- CN114822890B CN114822890B CN202210195018.6A CN202210195018A CN114822890B CN 114822890 B CN114822890 B CN 114822890B CN 202210195018 A CN202210195018 A CN 202210195018A CN 114822890 B CN114822890 B CN 114822890B
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- guide rail
- supporting platform
- containment sleeve
- floor
- lifting
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000009434 installation Methods 0.000 title claims abstract description 37
- 238000003466 welding Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 15
- 238000009933 burial Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
-
- 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
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/02—Arrangements of auxiliary equipment
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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)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Manufacturing & Machinery (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a method for installing a gate of nuclear power station equipment, which comprises the following steps: fixing the supporting platform on the connecting embedded part; one end of the adjusting tool is fixed on the connecting embedded part, the other end of the adjusting tool is fixed on the supporting platform, so that the adjusting tool is positioned above the supporting platform, and one side, far away from the connecting embedded part, of the supporting platform is pulled up to a preset height through the adjusting tool; the adjusting tool is of a telescopic or tractable structure; lifting the guide rail device, and connecting the top end of the guide rail column to the supporting platform so that the guide rail column is vertical; lifting and connecting the end socket on the guide box so that the end socket is positioned above the containment sleeve, and the axial direction of the end socket is parallel to the axial direction of the containment sleeve; the closure head is adapted to be lowered when it is desired to close the gate passageway to close the containment sleeve. The method for installing the nuclear power station equipment gate disclosed by the invention can solve the problem that the installation technical requirements of the large-size and heavy-weight nuclear power station equipment gate are difficult to meet at present.
Description
Technical Field
The invention belongs to the technical field of special facilities of nuclear engineering, and particularly relates to a method for installing a gate of nuclear power station equipment.
Background
The equipment gate of the nuclear power station is used as an inner layer shielding structure of a reactor factory building, has the function of preventing radioactive substances from leaking out, and is an important safety barrier of the nuclear power station. The main body structure of the equipment gate is a sealing head, and after the equipment gate is installed at a preset position corresponding to the gate channel, the equipment gate can move under the traction of hoisting equipment so as to open or close the gate channel as required.
The equipment gate has large size, large weight and high installation accuracy requirement, and the problems of how to match each component, how to realize accurate hoisting in place and how to meet the installation deviation requirement are always faced in the installation process of the equipment gate, so that the subsequent normal use of the equipment gate is ensured.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a method for installing a nuclear power station equipment gate, which aims to solve the problem that the installation technical requirements of the large-size and heavy-weight nuclear power station equipment gate are difficult to meet at present.
The invention adopts the following technical scheme to achieve the aim of the invention:
the installation method of the nuclear power station equipment gate is used for installing a gate assembly at a gate channel, a containment sleeve is arranged on the gate channel, a connecting embedded part is arranged above the gate channel, the gate assembly comprises a seal head, a supporting platform and a guide rail device, and the guide rail device comprises a guide rail column and a guide box which is connected to the guide rail column in a sliding manner; the nuclear power station equipment gate installation method comprises the following steps:
fixing the supporting platform on the connecting embedded part;
one end of the adjusting tool is fixed on the connecting embedded part, the other end of the adjusting tool is fixed on the supporting platform, so that the adjusting tool is positioned above the supporting platform, and one side, far away from the connecting embedded part, of the supporting platform is pulled up to a preset height through the adjusting tool; wherein the adjusting tool is of a telescopic or tractable structure;
lifting the guide rail device, and connecting the top end of the guide rail column to the supporting platform so that the guide rail column is vertical;
lifting and connecting the seal head to the guide box so that the seal head is positioned above the containment sleeve, and the axial direction of the seal head is parallel to the axial direction of the containment sleeve; the closure head is used for descending when the gate passage needs to be closed so as to cover the containment sleeve.
Further, the step of securing the support platform to the connection burial comprises:
setting a positioning tool on the connecting embedded part; the positioning tool is provided with a horizontal positioning surface;
and welding the supporting platform on the connecting embedded part and the horizontal positioning surface respectively.
Further, the adjusting tool comprises a first chain block; the step of fixing one end of the adjusting tool on the connecting embedded part and fixing the other end of the adjusting tool on the supporting platform so that the adjusting tool is positioned above the supporting platform and pulling up one side, far away from the connecting embedded part, of the supporting platform to a preset height through the adjusting tool comprises the following steps:
connecting one end of the first chain block to the connecting embedded part, and connecting the other end of the first chain block to one side, far away from the connecting embedded part, of the supporting platform;
and pulling the first chain block to enable one side of the supporting platform far away from the connecting embedded part to move relative to the connecting embedded part.
Further, the gate assembly further comprises a limiting seat, and the sealing head is provided with a matching piece; before the step of lifting the guide rail device, the method comprises the following steps:
fixing the limiting seat on the connecting embedded part and/or the supporting platform;
and after the step of lifting and connecting the end socket to the guide box so that the end socket is positioned above the containment sleeve and the axial direction of the end socket is parallel to the axial direction of the containment sleeve, the method comprises the following steps of:
the matching piece is detachably clamped in the limiting seat, so that the sealing head and the limiting seat are relatively fixed.
Further, the top end of the guide rail column is provided with a first hoisting part, and the bottom end of the guide rail column is provided with a second hoisting part; the step of lifting the guide rail device comprises the following steps:
simultaneously, lifting operation is carried out by taking the first lifting part and the second lifting part as lifting force application points so as to horizontally lift the guide rail device;
and the turning operation is carried out on the guide rail device through the force application cooperation of the first hoisting part and the second hoisting part, so that the guide rail device is turned from a horizontal state to a vertical state.
Further, the gate assembly further comprises a first positioning tool connected to the supporting platform, and the guide rail column is provided with a first positioning connecting part; the step of turning over the guide rail device by force application cooperation of the first hoisting part and the second hoisting part so as to enable the guide rail device to be turned over from a horizontal state to a vertical state comprises the following steps:
connecting the first positioning tool with the first positioning connecting part, and moving the guide rail device through the first positioning tool so as to enable the top end of the guide rail column to be in contact with the supporting platform; the first positioning tool is of a telescopic or tractable structure.
Further, the first positioning tool comprises a connecting bracket and a second chain block, and the connecting bracket is fixed on the supporting platform; the step of connecting the first positioning tool with the first positioning connection part and moving the guide rail device through the first positioning tool includes:
connecting one end of the second chain block to the connecting bracket, and connecting the other end of the second chain block to the first positioning connecting part;
and pulling the second chain block to enable the guide rail device to move relative to the connecting bracket.
Further, the gate assembly further comprises a second positioning tool, a second positioning connecting part is arranged at the bottom of the sealing head, and a third positioning connecting part is arranged at the top of the containment sleeve; the step of lifting and connecting the seal head to the guide box so that the seal head is located above the containment sleeve, and the axial direction of the seal head is parallel to the axial direction of the containment sleeve comprises the following steps:
the second positioning tool is respectively connected to the second positioning connecting part and the third positioning connecting part;
in the process of hoisting the end socket, the gravity center position of the end socket is adjusted through the second positioning tool; the second positioning tool is of a telescopic or tractable structure.
Further, the gate assembly further comprises a bearing floor, a floor hoisting assembly and a ground traction assembly, and a connecting bottom plate which extends outwards along the axial direction of the containment sleeve is arranged at the containment sleeve; after the step of lifting and connecting the end enclosure to the guide box so that the end enclosure is located above the containment sleeve and the axial direction of the end enclosure is parallel to the axial direction of the containment sleeve, the method comprises the following steps of:
the floor hoisting assembly is respectively connected with the top of the containment sleeve and the bearing floor so as to enable the bearing floor to do lifting movement by adjusting the floor hoisting assembly;
connecting the ground traction assembly with the connecting bottom plate and the bearing floor respectively so as to enable the bearing floor to move in the horizontal direction by adjusting the ground traction assembly;
lifting the bearing floor and feeding the bearing floor into the containment sleeve along the axial direction of the containment sleeve through the cooperation of the floor lifting assembly and the ground traction assembly;
and fixing the bearing floor at the bottom of the containment sleeve.
Further, before the step of connecting the floor hoisting assembly to the top of the containment sleeve and the load-bearing floor to raise and lower the load-bearing floor by adjusting the floor hoisting assembly, the method comprises:
a floor base is arranged at the bottom of the containment sleeve;
the step of securing the load floor to the bottom of the containment sleeve comprises:
and fixing the bearing floor on the floor base.
Compared with the prior art, the invention has the beneficial effects that:
according to the nuclear power station equipment gate installation method provided by the invention, the connecting embedded part is preset above the gate channel to fix the supporting platform, and the supporting platform after the installation is adjusted by utilizing the telescopic or traction action of the adjusting tool, so that the deviation of planeness and the like of the supporting platform can be accurately controlled, and the accuracy of verticality and the like of a guide rail device which is subsequently installed on the supporting platform is improved; based on the arrangement, after the end enclosure is hoisted to the guide rail device and is connected with the guide box to finish the installation and positioning work, the end enclosure can move up and down along the guide rail column under the drive of the hoisting device to realize the opening or closing of the gate channel, so that the installation technical requirements and the use requirements of the equipment gate are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of a nuclear power plant equipment gate in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a seal head according to an embodiment of the present invention;
FIG. 3 is a schematic view illustrating a distribution of the connecting burial in an embodiment of the present invention;
FIG. 4 is a schematic view of a support platform according to an embodiment of the present invention;
FIG. 5 is a schematic view of a rail apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an installation structure of a positioning tool according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an adjusting tool according to an embodiment of the invention;
FIG. 8 is a schematic diagram illustrating a structure of a limiting seat according to an embodiment of the present invention;
FIG. 9 is a schematic diagram illustrating a fitting structure of a limiting seat and a fitting according to an embodiment of the present invention;
FIG. 10 is a schematic view of an installation structure of a first lifting portion, a second lifting portion, and a first positioning connection portion on a rail apparatus according to an embodiment of the present invention;
FIG. 11 is a schematic diagram illustrating a fitting structure of a first positioning tool and a first positioning connection portion according to an embodiment of the present invention;
FIG. 12 is a schematic view of a connection structure of a second positioning tool according to an embodiment of the present invention;
FIG. 13 is a schematic view showing the overall structure of a nuclear power plant equipment shutter according to another embodiment of the present invention;
FIG. 14 is a schematic view of the connection of a load floor to a floor hoist assembly and a floor traction assembly in accordance with another embodiment of the invention;
FIG. 15 is a schematic view showing the distribution of floor bases according to another embodiment of the invention;
fig. 16 is a schematic view of a load floor in a hoisted position in accordance with another embodiment of the invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it should be understood that the specific embodiments described herein are only for explaining the present invention and are not limited thereto. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is referred to in the embodiment of the present invention, the directional indication is merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly. In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to fig. 1 to 16, an embodiment of the present invention provides a method for installing a gate assembly of a nuclear power plant equipment, for installing a gate assembly at a gate passage, the gate passage being provided with a containment sleeve 1, a connecting buried member 21 being provided above the gate passage, the gate assembly including a seal head 3, a support platform 4, an adjusting tool 5 and a guide rail device 6, the guide rail device 6 including a guide rail column 61 and a guide box 62 slidably connected to the guide rail column 61; the nuclear power station equipment gate installation method comprises the following steps:
s1, fixing a supporting platform 4 on a connecting embedded part 21;
s2, fixing one end of an adjusting tool 5 on the connecting embedded piece 21, fixing the other end of the adjusting tool 5 on the supporting platform 4 so that the adjusting tool 5 is positioned above the supporting platform 4, and pulling up one side, far away from the connecting embedded piece 21, of the supporting platform 4 to a preset height through the adjusting tool 5; wherein, the adjusting tool 5 is of a telescopic or tractable structure;
s3, lifting the guide rail device 6, and connecting the top end of the guide rail column 61 to the supporting platform 4 so that the guide rail column 61 is vertical;
s4, lifting the seal head 3 and connecting the seal head 3 to the guide box 62 so that the seal head 3 is positioned above the containment sleeve 1, and the axial direction of the seal head 3 is parallel to the axial direction of the containment sleeve 1; the closure head 3 is adapted to be lowered when it is required to close the sluice channel to close the containment sleeve 1.
In this embodiment, the gate channel is formed on the wall 2 for separating the reactor from the outside, the steel containment sleeve 1 covers the gate channel, the sealing head 3 is hemispherical and has a diameter corresponding to the inner diameter of the containment sleeve 1, so that the end face of the sealing head 3 can be covered on the containment sleeve 1 to close the gate channel, thereby achieving the shielding effect of preventing the radioactive substances from leaking.
The structure of the end enclosure 3 is shown in fig. 2, two main lifting lugs 31 for lifting can be arranged at the top of the end enclosure 3, supporting lug plates 32 for connecting a guide box 62 can be respectively arranged at the left side and the right side of the end enclosure, a plurality of connecting plates 33 are arranged on the spherical surface of the end enclosure 3 at intervals, and the connecting plates 33 are used for fixing an overhaul platform 36 and a steel cat ladder 37 (shown in fig. 1) on the end enclosure 3.
As shown in fig. 3, the connection embedded parts 21 may be embedded in the wall body 2 above the containment sleeve 1 by embedding, welding, expansion screw connection, etc., the installation positions of the plurality of connection embedded parts 21 may be set as required, and the related components may be fixed to the wall body 2 by connection with the connection embedded parts 21. It should be noted that, the connecting embedded parts 21 connected by different members described below do not refer to the same connecting embedded part 21, and may be connecting embedded parts 21 distributed at different positions, which are not distinguished by names for convenience of description.
The support platform 4 may be configured as shown in fig. 4, and is mainly composed of three longitudinal cantilever beams 41 of H400 x 300 x 14 x 24 and three transverse beams 42 of H400 x 300 x 14 x 24, where one end of the longitudinal cantilever beam 41 may be fixed on the connecting embedded member 21 by welding to form a cantilever structure on the wall body 2. In the implementation process, the supporting platform 4 can be lifted to the connecting burial piece 21 by a lifting device for workers to complete welding and fixing, and as shown in fig. 1, the supporting platforms 4 are preferably two and respectively positioned on the left side and the right side above the inner shell sleeve.
Because the supporting platform 4 is of an overhanging structure, the outer side (i.e. the side far away from the wall body 2) of the supporting platform is downwards deflected, and the outer side of the supporting platform 4 can be pulled up to a certain height (the preferred pulling-up height is 5mm higher than the design elevation) by utilizing the adjusting tool 5, so that the requirements of controlling deviation of flatness and the like and counteracting welding deformation are met, and the mounting position accuracy of other components (such as a guide rail device 6, a first positioning tool 8, a limiting seat 7, a lifting device and the like which are connected below the supporting platform 4 and used for moving the sealing head 3 and the like) in a connection relationship with the supporting platform 4 are ensured. The adjusting tool 5 may include a telescopic structure (such as a cylinder, a hydraulic device, a motor assembly, etc.) driven by air pressure, hydraulic pressure, electric energy, etc., and may also include a device that may be used for traction, such as a steel wire rope, an iron chain, a pulley, a chain block, etc., in the specific implementation process, the adjusting tool 5 only needs to perform the function of lifting the outer side of the supporting platform 4 by using the wall 2 as a fulcrum and through an external force (may be lifting by a telescopic driving device or lifting by a traction device), and the specific structure is not limited.
The step of attaching the adjustment tool 5 to the connection buried member 21 may be performed before or after the step of attaching the support platform 4, and the adjustment tool 5 may be fixed to the connection buried member 21 and the support platform 4 by welding, bolting, or the like.
The guide rail devices 6 can be hoisted by hoisting equipment, the top ends of the guide rail columns 61 can be fixed on the supporting platform 4 by means of bolting, welding and the like, as shown in fig. 1, the number of the guide rail devices 6 can be two corresponding to the supporting platform 4, and the guide rail devices 6 after being installed are vertically positioned below the supporting platform 4. As shown in fig. 5, a support 63 may be provided on the guide box 62.
The seal head 3 can also be hoisted by hoisting equipment, after the seal head 3 is hoisted to the height position of the guide box 62, the support lug plate 32 of the seal head 3 is erected on the support seat 63 of the guide box 62 at a preset angle by moving cooperation between the guide box 62 and the seal head 3, and the support lug plate 32 and the support seat 63 can be connected by welding, bolting and the like, so that the relative fixation of the seal head 3 and the guide box 62 is realized. In the specific implementation process, the guide rail device 6 can be lifted below the supporting platform 4 for temporary fixation, when the sealing head 3 is lifted, the guide rail device 6 can be matched with the sealing head 3 to finish positioning together, and finally, the guide rail column 61 with the positioned position is fixed below the supporting platform 4. Thus, after the guide rail device 6 and the seal head 3 are installed, in the subsequent application process, a lifting device can be arranged on the supporting platform 4, and the lifting device can pull the seal head 3 through the two main lifting lugs 31 at the top of the seal head 3, so that the seal head 3 moves up and down along the guide rail column 61 under the guiding action of the guide box 62. As shown in fig. 1, when the equipment gate is in a normal open state, the sealing head 3 is suspended above the containment sleeve 1 by a lifting device, and when the gate needs to be closed, the sealing head 3 is driven to move downwards only by the lifting device until the sealing head 3 completely covers the containment sleeve 1.
Therefore, in the installation method of the nuclear power station equipment gate provided by the embodiment, the connecting embedded piece 21 is preset above the gate channel to fix the supporting platform 4, and the supporting platform 4 after the installation is adjusted by utilizing the telescopic or traction action of the adjusting tool 5, so that the deviation of the planeness and the like of the supporting platform 4 can be accurately controlled, and the verticality and the like precision of the guide rail device 6 subsequently installed on the supporting platform 4 can be improved; based on the above arrangement, after the seal head 3 is hoisted to the guide rail device 6 and connected with the guide box 62 to finish the installation and positioning work, the seal head 3 can move up and down along the guide rail column 61 under the drive of the hoisting device to realize the opening or closing of the gate passage, thereby meeting the installation technical requirements and the use requirements of the equipment gate.
Specifically, referring to fig. 1 to 6, step S1 includes:
s11, arranging a positioning tool 211 on the connecting embedded part 21; the positioning tool 211 is provided with a horizontal positioning surface;
and S12, respectively welding the supporting platform 4 on the connecting embedded piece 21 and the horizontal positioning surface.
As shown in fig. 6, in this embodiment, the positioning tool 211 may be formed by two vertically arranged steel plates fixed at the same horizontal position on the connecting embedded part 21, the upper sides of the two vertical steel plates form a horizontal positioning surface, and the longitudinal cantilever beam 41 of the supporting platform 4 may be welded with the horizontal positioning surfaces of the connecting embedded part 21 and the two vertical steel plates at the same time, so that the supporting platform 4 may be quickly positioned, and the levelness of the supporting platform 4 may be ensured to a certain extent through the horizontal positioning surface.
Specifically, referring to fig. 1 to 7, the adjustment fixture 5 includes a first chain block 51; the step S2 comprises the following steps:
s21, connecting one end of the first chain block 51 to the connecting embedded part 21, and connecting the other end of the first chain block 51 to one side, far away from the connecting embedded part 21, of the supporting platform 4;
s22, pulling the first chain block 51 to enable one side of the supporting platform 4 away from the connecting embedded part 21 to move relative to the connecting embedded part 21.
The chain block is also called a chain block, and is usually provided with a fixed hook and a movable hook, wherein the fixed hook is connected with the movable hook through a hoisting chain wound on a pulley mechanism, a manual chain connected with the hoisting chain through a ratchet mechanism is further arranged in the chain block, when the manual chain is pulled clockwise or anticlockwise, the movable hook can slowly approach to the fixed hook or be far away from the fixed hook, and when the movable hook is connected with a heavy object, the lifting and the lowering of the heavy object can be realized by smaller pulling force. In addition, a braking device is arranged in the chain block, when the manual chain is stopped to be pulled, the lifting chain stops moving, and the weight on the movable hook can hover at the current position and cannot slide under the action of gravity. Because the chain block is the prior art, the working principle thereof is not described in detail herein; the chain block described later is not described in detail along the above structures.
In the implementation process, as shown in fig. 7, three connecting embedded parts 21 distributed at intervals may be disposed above each supporting platform 4, each connecting embedded part 21 is fixed with a hanging ring 52, three hanging rings 52 are also fixed at corresponding positions on the outer side of the supporting platform 4, each supporting platform 4 is correspondingly provided with three first chain blocks 51, two ends (i.e. a fixed hook and a movable hook) of each first chain block 51 are respectively hooked on the corresponding hanging ring 52 of the connecting embedded part 21 and the corresponding hanging ring 52 of the supporting platform 4 (a direct hooking manner may be adopted, or one end of each first chain block 51 is connected with the hanging ring 52 through a steel wire rope as shown in fig. 7). After the arrangement is finished, the outer side of the supporting platform 4 can be pulled up by pulling the manual chain of the first chain block 51, so that the outer side height of the supporting platform 4 can be conveniently adjusted.
Specifically, referring to fig. 1 to 9, the gate assembly further includes a limiting seat 7, and the sealing head 3 is provided with a matching piece 34; before step S3, the method includes:
s03, fixing the limiting seat 7 on the connecting embedded piece 21 and/or the supporting platform 4;
after step S4, it includes:
s5, the matching piece 34 is detachably clamped in the limiting seat 7, so that the sealing head 3 and the limiting seat 7 are relatively fixed.
As shown in fig. 8, the limiting seat 7 may specifically be a pin shaft connecting seat, where the pin shaft connecting seat includes a connecting beam 71, a supporting beam 72 and a pin shaft sleeve 73, the center of the pin shaft sleeve 73 is a pin hole arranged along the vertical direction, the connecting beam 71 may be fixed on the connecting embedded member 21 by a welding manner, and the upper end portion of the supporting beam 72 may be fixed on the supporting platform 4 by a bolt connection manner. As shown in fig. 2, the mating element 34 may include a vertically upwardly disposed shock resistant pin. As shown in fig. 9, when the end socket 3 is installed or in the open state of the gate, the anti-vibration pin can penetrate into the pin shaft sleeve 73 from bottom to top, and through the cooperation of the anti-vibration pin and the pin hole, the excessive swing amplitude of the end socket 3 can be avoided, and the anti-vibration effect is achieved.
Of course, in the practical application process, the anti-seismic pin may be disposed on the limiting seat 7, and the pin shaft sleeve 73 may be disposed on the end socket 3. The spacing seat 7 and the matching piece 34 may be in other manners than pin hole matching, but not limited thereto.
Specifically, referring to fig. 1 to 11, the top end of the rail post 61 has a first hanging portion 611, and the bottom end of the rail post 61 has a second hanging portion 612; in step S3, the step of lifting the rail device 6 specifically includes:
s31, simultaneously taking the first hoisting part 611 and the second hoisting part 612 as hoisting force application points to perform hoisting operation so as to horizontally hoist the guide rail device 6;
s32, the turning operation is performed on the rail device 6 by the force application cooperation at the first hanging portion 611 and the second hanging portion 612, so that the rail device 6 is turned from the horizontal state to the vertical state.
As shown in fig. 10, the first lifting portion 611 may be a lifting lug plate for connecting a main sling (not shown), which may be fixed to the top end of the rail post 61 by a high-strength bolt, and the second lifting portion 612 may be a hooking portion for connecting an auxiliary sling 613. In the actual lifting process, the main hanging belt can be connected to a main lifting device, the auxiliary hanging belt 613 is connected to an auxiliary lifting device, so that the guide rail device 6 horizontally placed on the ground is lifted horizontally through the main lifting device and the auxiliary lifting device to simultaneously apply upward lifting tension, and the situation that the guide rail device 6 is scratched before being completely lifted due to the fact that one end of the guide rail column 61 is not stressed is avoided; when the guide rail device 6 is completely hoisted into the air, the auxiliary hoisting equipment can be controlled to stop applying hoisting tension, so that the top end of the guide rail column 61 is continuously lifted and the bottom end of the guide rail column 61 is kept static, and the turning-over operation of the guide rail device 6 is realized.
Specifically, referring to fig. 1 to 11, the gate assembly further includes a first seating fixture 8, the first seating fixture 8 being connected to the support platform 4, the rail column 61 having a first seating connection 614; after step S32, it includes:
s33, connecting the first positioning tool 8 with the first positioning connecting part 614, and moving the guide rail device 6 through the first positioning tool 8 so that the top end of the guide rail column 61 is in contact with the supporting platform 4; wherein, the first locating fixture 8 is of a telescopic or tractable structure.
In the above embodiment, after the rail device 6 is turned to be in the vertical state, the auxiliary hanging strip 613 at the bottom end of the rail column 61 may be loosened, the rail device 6 may be continuously lifted to the vicinity of the supporting platform 4 by the main lifting apparatus, at this time, the rail device 6 may be pulled to the position of the first positioning tool 8 by means of the connection between the first positioning tool 8 and the first positioning connection 614, until the top end of the rail column 61 contacts with the supporting platform 4, so that the positioning of the rail device 6 is completed, and the operator may connect the top end of the rail column 61 with the supporting platform 4 by means of welding, bolting, etc. so as to implement the installation of the rail device 6. The parts of the components in the first positioning fixture 8 may be pre-connected to the supporting platform 4 before the supporting platform 4 is mounted on the connecting embedded part 21, or may be further connected according to the process requirement during the lifting process, which is not limited herein.
The first positioning tool 8 may include a telescopic structure (such as a cylinder, a hydraulic device, a motor assembly, etc.) driven by air pressure, hydraulic pressure, electric energy, etc., and may also include a wire rope, an iron chain, a pulley, a chain block, etc. that may be used for traction; the first in-place connection 614 may be a hanger, a hook, etc. that mates with the first in-place tooling 8. In the specific implementation process, the first positioning tool 8 only needs to play a role of enabling the guide rail device 6 to move towards a preset installation position, and the specific structure is not limited.
1-11, the first positioning tool 8 comprises a connecting bracket 81 and a second chain block 82, wherein the connecting bracket 81 is fixed on the supporting platform 4; step S33 includes:
s331, connecting one end of the second chain block 82 to the connecting bracket 81, and connecting the other end of the second chain block 82 to the first positioning connecting part 614;
and S332, pulling the second chain block 82 to enable the guide rail device 6 to move relative to the connecting bracket 81.
In this embodiment, the connection brackets 81 may be connected to the support platform 4 in advance before the support platform 4 is mounted to the connection burial 21, and as shown in fig. 7, the connection brackets 81 may be provided in two spaced below the support platform 4, each connection bracket 81 including a horizontal i-beam 811 and a vertical i-beam 812 welded to each other, and the vertical i-beam 812 is fixed to the support platform 4 by welding. The first positioning connection portion 614 may be two steel plates clamped at two sides of the middle of the guide rail column 61 by tightening bolts as shown in fig. 10, and the steel plates are provided with hanging lugs; the first positioning connection portion 614 also can play a limiting role in preventing the guide box 62 from falling down, and can be detached after the end socket 3 is installed. As shown in fig. 11, two ends of each second chain block 82 are respectively hooked on the connecting bracket 81 and the hanging lugs of the first positioning connecting portion 614. After the arrangement is completed, the guide rail device 6 can be moved to a direction approaching the connecting bracket 81 by pulling the manual chain of the second chain block 82, and finally the guide rail device 6 is positioned below the supporting platform 4. In the specific implementation process, the guide rail device 6 can be lifted to the connecting bracket 81 for temporary fixing, when the seal head 3 is lifted, the guide rail device 6 can be matched with the seal head 3 through the driving of the second chain block 82, so that the support lug plate 32 of the seal head 3 is connected to the preset position on the support seat 63 of the guide box 62, the seal head 3 and the guide rail device 6 are in place together, and finally the guide rail column 61 after the completion of the positioning is fixed below the supporting platform 4.
Specifically, referring to fig. 1 to 12, the gate assembly further includes a second positioning tool 12, the bottom of the seal head 3 has a second positioning connection portion 35, and the top of the containment sleeve 1 has a third positioning connection portion 11; the step S4 includes:
s41, connecting the second positioning tool 12 to the second positioning connecting part 35 and the third positioning connecting part 11 respectively;
s42, in the process of hoisting the end socket 3, adjusting the gravity center position of the end socket 3 through the second positioning tool 12; wherein the second positioning tool 12 is of a retractable or towable structure.
As shown in fig. 2, the second in-place connection portion 35 may be two lugs respectively arranged on the left and right sides of the bottom of the seal head 3; as shown in fig. 12, the third in-place connection portion 11 may also be a hanging tab correspondingly disposed on the top of the containment sleeve 1. The second positioning tool 12 may be specifically a third chain block, and two ends of each third chain block are hooked on the corresponding second positioning connecting portion 35 and the third positioning connecting portion 11 respectively. After the arrangement is finished, as shown in fig. 12, the seal head 3 can be moved in a direction approaching or separating from the containment sleeve 1 in the horizontal direction by pulling the manual chain of the third chain hoist, so that the gravity center position of the seal head 3 can be conveniently adjusted, the in-situ installation of the seal head 3 is completed together with the hoisting operation on the main lifting lug 31, and the support lug plate 32 of the seal head 3 is erected on the support seat 63 of the guide box 62 at a preset angle.
Further, with reference to fig. 1-16, in one exemplary embodiment, the gate assembly further comprises a load floor 9, a floor hoist assembly 91, and a ground traction assembly 92, the containment sleeve 1 being provided with a connection floor 10 extending outwardly in the axial direction of the containment sleeve 1; after step S4, it includes:
s6, respectively connecting the floor hoisting assembly 91 with the top of the containment sleeve 1 and the bearing floor 9, so as to enable the bearing floor 9 to do lifting movement by adjusting the floor hoisting assembly 91;
s7, connecting the ground traction assembly 92 with the connecting bottom plate 10 and the bearing floor 9 respectively, so that the bearing floor 9 moves in the horizontal direction by adjusting the ground traction assembly 92;
s8, lifting the bearing floor 9 and feeding the bearing floor 9 into the containment sleeve 1 along the axial direction of the containment sleeve 1 through the cooperation of the floor lifting assembly 91 and the ground traction assembly 92;
and S9, fixing the bearing floor 9 at the bottom of the containment sleeve 1.
In this embodiment, the load floor 9 may be configured in a flat plate shape as shown in fig. 14, which is used for workers and equipment to enter and exit the reactor building through the gate passageway. As shown in fig. 14 and 16, a plurality of lugs may be disposed on the top of the containment sleeve 1 and the upper surface of the load-bearing floor 9, and the floor hoist assembly 91 may specifically include a fourth chain block, in which the lifting chains of the fourth chain block may sequentially pass through the lugs in a vertically staggered manner, so that the load-bearing floor 9 is connected to the containment sleeve 1 through the lifting chains. After the arrangement is finished, the bearing floor 9 can be pulled in the vertical direction by pulling the manual chain of the fourth chain block, so that the bearing floor 9 can ascend or descend relative to the containment sleeve 1 as required.
As shown in fig. 14 and 16, a plurality of lugs may be provided on the upper surface of the connection base plate 10 and on the side surface of the load-bearing floor 9, and the ground traction assembly 92 may specifically include a fifth chain block, through which a hoist chain of the fifth chain block may sequentially pass in a horizontal direction, so that the load-bearing floor 9 is connected to the connection base plate 10 through the hoist chain. After the arrangement is finished, the bearing floor 9 can be pulled in the horizontal direction by pulling the manual chain of the fifth chain block, so that the bearing floor 9 can be close to or far away from the containment sleeve 1 as required.
Based on the above arrangement, the load-bearing floor 9 can be conveniently moved in two coordinate directions by the cooperation between the floor hoisting assembly 91 and the ground traction assembly 92, so that a series of actions of hoisting the load-bearing floor 9 and axially feeding the load-bearing floor 9 into the containment sleeve 1 and placing the load-bearing floor 9 at a preset installation position at the bottom of the containment sleeve 1 can be completed, and the worker can finally fix the load-bearing floor 9 in place on the containment sleeve 1 by means of welding, bolting, etc.
Specifically, referring to fig. 1 to 16, before step S6, it includes:
s06, arranging a floor base 13 at the bottom of the containment sleeve 1;
step S9 includes:
s91, the load-bearing floor 9 is fixed to the floor base 13.
The floor base 13 is used for supporting the load-bearing floor 9. Before installing the floor base 13, retest is needed to be carried out on the position of the bottom of the containment sleeve 1 for installing the floor base 13, after checking the design value, the cutting amount of the floor base 13 is calculated according to the elevation design value of the bearing floor 9, and secondary processing is carried out on the cutting amount. After the secondary processing is completed, as shown in fig. 15, the floor base 13 is fixed on the containment sleeve 1 in a welding manner according to a preset installation position, and deformation is required to be monitored in real time when the floor base 13 is welded due to the deformation in the welding process, so that the welding sequence is adjusted according to the deformation condition, and the floor base 13 after the welding is ensured to meet the elevation requirement, thereby meeting the requirements of the load-bearing floor 9, such as use function, parallelism and the like. By providing the floor base 13, pre-installation correction can be facilitated more, thereby improving the installation accuracy of the load-bearing floor 9.
It should be noted that, other contents of the installation method of the nuclear power plant equipment gate disclosed in the present invention can be referred to the prior art, and will not be described herein.
The foregoing description of the embodiments of the present invention should not be construed as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the following description and drawings or as applied directly or indirectly to other related technical fields.
Claims (8)
1. The installation method of the nuclear power station equipment gate is used for installing a gate assembly at a gate channel and is characterized in that a containment sleeve is arranged on the gate channel, a connecting embedded part is arranged above the gate channel, the gate assembly comprises a sealing head, a supporting platform, a guide rail device and a first positioning tool, the guide rail device comprises a guide rail column and a guide box which is connected to the guide rail column in a sliding manner, the first positioning tool is connected to the supporting platform, and the guide rail column is provided with a first positioning connecting part; the nuclear power station equipment gate installation method comprises the following steps:
fixing the supporting platform on the connecting embedded part;
one end of an adjusting tool is fixed on the connecting embedded part, the other end of the adjusting tool is fixed on the supporting platform, so that the adjusting tool is positioned above the supporting platform, and one side, far away from the connecting embedded part, of the supporting platform is pulled up to a preset height through the adjusting tool; wherein the adjusting tool is of a telescopic or tractable structure;
lifting the guide rail device, and connecting the top end of the guide rail column to the supporting platform so that the guide rail column is vertical;
lifting and connecting the seal head to the guide box so that the seal head is positioned above the containment sleeve, and the axial direction of the seal head is parallel to the axial direction of the containment sleeve; the seal head is used for descending when the gate passage needs to be closed so as to cover the containment sleeve;
the top end of the guide rail column is provided with a first hoisting part, and the bottom end of the guide rail column is provided with a second hoisting part; the step of lifting the guide rail device comprises the following steps:
simultaneously, lifting operation is carried out by taking the first lifting part and the second lifting part as lifting force application points so as to horizontally lift the guide rail device;
the turning operation is carried out on the guide rail device through the force application cooperation of the first hoisting part and the second hoisting part, so that the guide rail device is turned from a horizontal state to a vertical state;
connecting the first positioning tool with the first positioning connecting part, and moving the guide rail device through the first positioning tool so as to enable the top end of the guide rail column to be in contact with the supporting platform; the first positioning tool is of a telescopic or tractable structure.
2. A nuclear power plant equipment gate installation method as claimed in claim 1, wherein the step of securing the support platform to the connection burial comprises:
setting a positioning tool on the connecting embedded part; the positioning tool is provided with a horizontal positioning surface;
and welding the supporting platform on the connecting embedded part and the horizontal positioning surface respectively.
3. The nuclear power plant equipment gate installation method of claim 1, wherein the adjustment tooling comprises a first chain block; the step of fixing one end of the adjusting tool on the connecting embedded part and fixing the other end of the adjusting tool on the supporting platform so that the adjusting tool is positioned above the supporting platform and pulling up one side, far away from the connecting embedded part, of the supporting platform to a preset height through the adjusting tool comprises the following steps:
connecting one end of the first chain block to the connecting embedded part, and connecting the other end of the first chain block to one side, far away from the connecting embedded part, of the supporting platform;
and pulling the first chain block to enable one side of the supporting platform far away from the connecting embedded part to move relative to the connecting embedded part.
4. The nuclear power plant equipment gate installation method of claim 1, wherein the gate assembly further comprises a limiting seat, and the sealing head is provided with a matching piece; before the step of lifting the guide rail device, the method comprises the following steps:
fixing the limiting seat on the connecting embedded part and/or the supporting platform;
and after the step of lifting and connecting the end socket to the guide box so that the end socket is positioned above the containment sleeve and the axial direction of the end socket is parallel to the axial direction of the containment sleeve, the method comprises the following steps of:
the matching piece is detachably clamped in the limiting seat, so that the sealing head and the limiting seat are relatively fixed.
5. The nuclear power plant equipment gate installation method of claim 1, wherein the first positioning fixture comprises a connecting bracket and a second chain block, and the connecting bracket is fixed on the supporting platform; the step of connecting the first positioning tool with the first positioning connection part and moving the guide rail device through the first positioning tool includes:
connecting one end of the second chain block to the connecting bracket, and connecting the other end of the second chain block to the first positioning connecting part;
and pulling the second chain block to enable the guide rail device to move relative to the connecting bracket.
6. The nuclear power plant equipment gate installation method of claim 1, wherein the gate assembly further comprises a second in-place tooling, the bottom of the head has a second in-place connection, and the top of the containment sleeve has a third in-place connection; the step of lifting and connecting the seal head to the guide box so that the seal head is located above the containment sleeve, and the axial direction of the seal head is parallel to the axial direction of the containment sleeve comprises the following steps:
the second positioning tool is respectively connected to the second positioning connecting part and the third positioning connecting part;
in the process of hoisting the end socket, the gravity center position of the end socket is adjusted through the second positioning tool; the second positioning tool is of a telescopic or tractable structure.
7. The nuclear power plant equipment gate installation method of claim 1, wherein the gate assembly further comprises a load floor, a floor hoist assembly and a ground traction assembly, the containment sleeve being provided with a connection floor extending outwardly in an axial direction of the containment sleeve; after the step of lifting and connecting the end enclosure to the guide box so that the end enclosure is located above the containment sleeve and the axial direction of the end enclosure is parallel to the axial direction of the containment sleeve, the method comprises the following steps of:
the floor hoisting assembly is respectively connected with the top of the containment sleeve and the bearing floor so as to enable the bearing floor to do lifting movement by adjusting the floor hoisting assembly;
connecting the ground traction assembly with the connecting bottom plate and the bearing floor respectively so as to enable the bearing floor to move in the horizontal direction by adjusting the ground traction assembly;
lifting the bearing floor and feeding the bearing floor into the containment sleeve along the axial direction of the containment sleeve through the cooperation of the floor lifting assembly and the ground traction assembly;
and fixing the bearing floor at the bottom of the containment sleeve.
8. The nuclear power plant equipment door installation method of claim 7, wherein the step of connecting the floor hoist assembly to the top of the containment sleeve and the load-bearing floor to raise and lower the load-bearing floor by adjusting the floor hoist assembly, respectively, includes:
a floor base is arranged at the bottom of the containment sleeve;
the step of securing the load floor to the bottom of the containment sleeve comprises:
and fixing the bearing floor on the floor base.
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| CN202210195018.6A CN114822890B (en) | 2022-02-28 | 2022-02-28 | Nuclear power station equipment gate installation method |
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| CN202210195018.6A CN114822890B (en) | 2022-02-28 | 2022-02-28 | Nuclear power station equipment gate installation method |
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| CN116641559B (en) * | 2023-05-11 | 2024-03-22 | 中国核工业华兴建设有限公司 | Method for installing and positioning gate sleeve of circular arc-shaped concrete wall |
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