CN102518311B - Method for mounting nuclear island end beam of nuclear power station - Google Patents
Method for mounting nuclear island end beam of nuclear power station Download PDFInfo
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- CN102518311B CN102518311B CN201110428863.5A CN201110428863A CN102518311B CN 102518311 B CN102518311 B CN 102518311B CN 201110428863 A CN201110428863 A CN 201110428863A CN 102518311 B CN102518311 B CN 102518311B
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- end carriage
- nuclear island
- nuclear
- end beam
- circular orbit
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Abstract
The invention relates to a method for mounting a nuclear island of a nuclear power station, and particularly provides a method for mounting a nuclear island end beam of a nuclear power station, which solves the problems of easiness in tipping over and low mounting precision of a nuclear island end beam in the prior art. The method includes the steps of determining a mounting position of the end beam firstly; arranging at least two fixing rings on the inner wall of a nuclear island cylinder corresponding to the mounting position or arranging at least two fixing supports at the top of a civil engineering layer on the outer side of the nuclear island cylinder corresponding to the mounting position; mounting locking structures on the end beam corresponding to the fixing rings or the fixing supports in position, and hoisting the end beam with a hoisting device; after the end beam is hoisted in place, rigidly or flexibly connecting the locking structures with the corresponding fixing rings or the fixing supports, and arranging an intermediate support device between the end beam and the inner wall of the nuclear island cylinder if flexible connection is adopted; and fixing the end beam on a circular orbit by means of flexible connection, adjusting the position of the end beam and then demounting the hoisting device. Therefore, the end beam cannot tip over and is convenient in adjustment, and the mounting precision is improved.
Description
Technical field
The present invention relates to install the method for nuclear island of nuclear power station, relate in particular to the method that nuclear island end beam of nuclear power station is installed.
Background technology
In the prior art, normally first according to the installation site of nuclear island of nuclear power station girder, determine the installation site of end carriage, then adopt turned crane directly end carriage to be lifted on the circular orbit beam in nuclear island of nuclear power station, again by erection of main beam on end carriage, end carriage can be slided along ring-shaped guide rail on circular orbit beam.Like this, directly by lifting, end carriage is arranged on the circular orbit beam in nuclear island, in installation process, end carriage is installed easily tilt and then easily tumble because of lifting, and installation risk is high, has huge potential safety hazard; After end carriage lifting installation, cannot finely tune the installation site of end carriage, installation accuracy is low, has huge hidden danger of quality, and because being difficult for reaching installation requirement, installation effectiveness is low.
Summary of the invention
For solving, nuclear island end carriage is installed in prior art end carriage is easily occurred tumbles, installation risk is high, and the low problem of installation accuracy, and the present invention proposes a kind of method that nuclear island end beam of nuclear power station is installed, and the method comprises the steps:
The first step, determines the installation site of end carriage;
Second step is provided with at least two retainer rings on the corresponding described nuclear island cylinder inboard wall in the installation site with described end carriage or the top of the civil engineering layer in corresponding described nuclear island cylindrical shell outside is provided with at least two fixed supports in the installation site with described end carriage; Described fixed support is right-angled triangle frame construction, and the rod shaped structure of the vertical edges of this right-angled triangle frame construction protrudes upward vertex of a triangle;
The 3rd step, before lifting end carriage, latch-up structure is arranged on described end carriage, and the installation site of described latch-up structure on described end carriage is corresponding with described retainer ring or support bracket fastened position, to be connected with described retainer ring or fixed support, described end carriage is fixed on the circular orbit beam in described nuclear island, then with hanging apparatus, lift end carriage, so that described end carriage is arranged on described circular orbit beam vertically;
The 4th step, after described end carriage hoisted in position, if adopt and be rigidly connected between described latch-up structure and described retainer ring or fixed support, enters next step operation; If adopt and flexibly connect between described latch-up structure and described retainer ring or fixed support, between described end carriage and described nuclear island cylinder inboard wall, intermediate strutting device is set, to avoid described end carriage to tumble towards the direction of described nuclear island cylinder inboard wall;
The 5th step, is fixed on described end carriage on described circular orbit beam by flexibly connecting, and adjusts the position of described end carriage, so that the position of described end carriage meets the installation needs of the girder of described nuclear island, and then unloading hanging apparatus.
Like this, when end carriage is installed, when being connected by rigid connection structure between latch-up structure and fixed support, latch-up structure and fixed support and syndeton interact and can make end carriage fix not tumble; When being connected by flexible connecting structure between latch-up structure and fixed support, between end carriage and nuclear island cylinder inboard wall, intermediate strutting device is set, can make in the horizontal direction stressed in equilibrium state of end carriage, and then can avoid end carriage to tumble.In addition, in the process of end carriage is installed, can be as required to the smoothness of end carriage and end carriage the position on rail beam adjust, improve installation accuracy.
Preferably, in the 5th step of the method, locking deck is first installed after the adjustment of the position of described end carriage completes, then is unloaded hanging apparatus, to avoid described end carriage slide on described circular orbit beam or roll; Described locking deck is the integrative-structure that is provided with two U-shaped grooves dorsad, and U-shaped groove upward blocks the wheel on described end carriage, and U-shaped groove down blocks the guide rail on described circular orbit beam.Like this, just can utilize locking deck by the guide rail locking on end carriage and circular orbit beam, make end carriage relative fixing with the guide rail in the vertical direction on circular orbit beam, and then avoid end carriage to roll on circular orbit beam; In addition, due to U-shaped groove down of locking deck be stuck on circular orbit beam guide rail on, make to lock deck and be fixed on the guide rail on circular orbit beam, and then avoid end carriage to slide on circular orbit beam.
Preferably, described latch-up structure is the integrative-structure being formed by right-angled triangle frame construction and rectangular frame structure, described right-angled triangle frame construction is positioned at the top of described rectangular frame structure, and the base of described right-angled triangle frame construction and the top of described rectangular frame structure are same level straight-bar; The straight-bar of the vertical direction of described right-angled triangle frame construction is positioned at described end carriage away from a side of described nuclear island cylinder inboard wall, and stretches out vertex of a triangle along direction straight up; Described rectangular frame structure is enclosed hoop on described end carriage.Like this, can adopt the rectangular frame structure of this latch-up structure bottom that nuclear island end carriage is fixed, and can not cause damage to end carriage, improve installation effectiveness and effect is installed.
Preferably, between described latch-up structure and described retainer ring or described fixed support, with Chain block and/or chain, be connected.Like this, capable of regulating Chain block and/or chain, and then adjust the gradient of end carriage on circular orbit beam.
Preferably, described intermediate strutting device is jack.Like this, not only easy for installation, and can need to adjust jack according to installing, and then avoid described end carriage to tumble towards the direction of described nuclear island cylinder inboard wall.
Preferably, in the 5th step of the method, described in flexibly connect as Chain block and/or chain, by regulating this Chain block and/or chain to regulate the relative position of described end carriage and described circular orbit beam.Like this, can adjust as required the elasticity of Chain block and/or chain, and then adjust the permanent position of described end carriage on described circular orbit beam.
Accompanying drawing explanation
Fig. 1 is that the master of nuclear island end carriage installation in position looks schematic diagram;
Fig. 2 is that A-A in Fig. 1 is to enlarged diagram;
Fig. 3 installs the support bracket fastened perspective view of nuclear island end carriage;
Fig. 4 installs the perspective view of latch-up structure for nuclear island end carriage;
Fig. 5 installs the perspective view of locking deck for nuclear island end carriage.
The specific embodiment
As illustrated in fig. 1 and 2, when end carriage 1 is installed, the top of the civil engineering layer outside nuclear island cylindrical shell is provided with two fixed supports 2 as shown in Figure 3, position near two ends on end carriage 1 is provided with latch-up structure 3, and by fixed support 2 and the latch-up structure 3 of syndeton 4 connection correspondence positions, and syndeton 4 pulls to civil engineering layer by latch-up structure 3 by end carriage 1, thereby avoid end carriage 1 to tumble towards nuclear island center position.Meanwhile, between end carriage 1 and nuclear island cylinder inboard wall, be provided with intermediate strutting device 5, make end carriage 1 stress balance in the horizontal direction in plateau, and then avoid end carriage 1 to swing to nuclear island cylinder inboard wall because being subject to the effect of the power outside civil engineering layer that pulls to.In addition, the oblique locking deck 9 that is provided with in position that will contact with guide rail 7 at the wheel 8 of end carriage 1, the groove of the both sides up and down of this locking deck 9 blocks respectively wheel 8 and guide rail 7, make wheel 8 relative with guide rail 7 fixing, and then avoid end carriage 1 sliding or rolling along guide rail 7 on circular orbit beam 6.The two ends of end carriage 1 are connected with rail beam 6 by Chain block and/or chain 10, and Chain block and/or chain are in tension, so that end carriage 1 is fixed on rail beam 6.
As illustrated in fig. 1 and 2, first according to the installation site of girder, determine the installation site on the circular orbit beam 6 of end carriage 1 in nuclear island, and then the on-station position of definite fixed support 2 on civil engineering layer 11, then on the on-station position of this fixed support 2, measure and along the radial direction unwrapping wire of nuclear island, then fixed support as shown in Figure 32 is embedded in to the top of civil engineering layer 11, and this fixed support 2 is near the outer wall of nuclear island cylindrical shell.Certainly, also more fixed support 2 can be set at the top of civil engineering layer 11.Fixed support 2 is right-angled triangle frame construction, wherein straight-bar 12 is straight up positioned at the side near nuclear island cylinder body outer wall, the connecting portion of the brace 13 in straight-bar 12 and this right-angled triangle frame construction is positioned at the upper of straight-bar 12, preferably the top of close straight-bar 12; The length of the straight-bar 14 of horizontal direction is less than the length of the straight-bar 12 of vertical direction, and the straight-bar 14 of this horizontal direction is embedded in the top of civil engineering layer 11.Preferably, the straight-bar 14 of horizontal direction extends to two ends along the radial direction of nuclear island.Further preferably, the straight-bar 12 of the vertical direction of fixed support 2 is optional with i iron, and the straight-bar 14 of brace 13 and horizontal direction all can be selected channel-section steel.Preferably, for install central angle between two fixed supports of an end carriage 1 be 17 ° 4 '.Certainly, retainer ring also can be set on nuclear island cylinder inboard wall replaces fixed support 2 to fix syndeton 4.
As shown in Figure 2, before lifting end carriage 1, elder generation is the installation site of the latch-up structure 3 as shown in Figure 3 of the location positioning on nuclear island on end carriage 1 according to fixed support 2, and, after end carriage 1 installation, corresponding latch-up structure 3 is positioned at the in the radial direction same of nuclear island with fixed support 2.This latch-up structure 3 is formed and can be divided into upper and lower two parts by 4 sections of channel-section steels and 1 section of i iron welding, wherein, upper part is right-angled triangle frame construction 15, and straight-bar and the connecting portion between brace of the vertical direction in this right-angled triangle frame construction 15 are positioned at the upper of this straight-bar, and the position on the top of preferably close this straight-bar; Lower part is rectangular frame structure 16, and the straight-bar of the horizontal direction in right-angled triangle frame construction 15 is the upper part right-angled triangle frame construction 15 horizontal straight-bar shared with lower part rectangular frame structure 16.Rectangular frame structure 16 is enclosed hoop on end carriage 1, so that make latch-up structure 3 locking end carriages 1.Certainly, latch-up structure 3 can be also that shaft-like steel by other types forms by welding.Preferably, on the straight-bar of the vertical direction of the upper part right-angled triangle frame construction 15 of latch-up structure 3, be provided with clip 17, this clip 17 is positioned at the top of the connecting portion of this straight-bar and brace, preferably near the position at this straight-bar top.Certainly, the latch-up structure 3 of end carriage 1 can be also straight-bar structure, and this straight-bar structure can be directly by welding or be bolted to end carriage 1 near on the side at nuclear island center or on the bottom surface of end carriage 1, and this straight-bar structure is connected by Chain block and/or chain with retainer ring or fixed support.
As shown in Figure 2, when lifting end carriage 1, first utilize jack lift that end carriage 1 is sling and is placed in predetermined installation site, by syndeton 4, be connected and fixed support 2 and latch-up structure 3 again, and between end carriage 1 and nuclear island cylindrical shell, jack is set as intermediate strutting device 5 when not unloading crane, to avoid end carriage 1 to swing to nuclear island cylindrical shell.Preferably, syndeton 4 is positioned on the straight-bar 12 of vertical direction on fixed support 2 with the connecting portion of fixed support 2, and the position on the top of preferably close straight-bar 12; The connecting portion of syndeton 4 and latch-up structure 3 is positioned on the vertical bar of triangular structure of right angle 15 of latch-up structure 3, and preferably near the position on the top of this vertical bar.Certainly, can also adopt other hanging apparatus to lift end carriage 1.Further, syndeton 4 is positioned on same level height with the connecting portion of locking mechanism 3 with connecting portion and the syndeton 4 of fixed support 2.Syndeton 4 is Chain block and/or chain, can adjust by adjusting Chain block or the degree of tightness of chain and the state of jack the smoothness of end carriage 1 like this, make it in plateau, in case not-go-end beam 1 is tumbled because of laterally inclined, avoid occurring security incident.Certainly, this syndeton 4 can be also rigid structures, and such as connecting rod, and the two ends of this connecting rod are connected with latch-up structure 3 with fixed support 2 respectively, can also omit intermediate strutting device 5 like this.
As shown in Figure 1, after end carriage 1 installation in position, with Chain block and/or chain 10, end carriage 1 is fixed on circular orbit beam 6, the connecting portion of Chain block and/or chain 10 and end carriage 1 is positioned on the two ends of upper surface of end carriage 1, and the connecting portion of end carriage 1 and Chain block and/or chain 10 is positioned on the circumferential center line of upper surface of end carriage 1, the connecting portion of Chain block and/or chain 10 and circular orbit beam 6 is also positioned on the circumferential center line of upper surface of circular orbit beam 6.Like this, end carriage 1 just can not tumbled because of the active force of Chain block and/or 10 pairs of end carriages 1 of chain.Preferably, can be provided with in the end of end carriage 1 wire rope around end carriage, Chain block and/or chain 10 are connected with this wire rope, so that end carriage 1 is fixed with the relative position of circular orbit beam 6, prevent that end carriage direction along ng a path is moved or rolls along the radial direction of nuclear island.Then, with 9 pairs of end carriages 1 of locking deck, position, with locking deck 9, the guide rail 7 on the wheel on end carriage 1 and circular orbit beam is blocked, the relative position between wheel 8 and guide rail 7 is fixed.As shown in Figure 5, this locking deck 9 is the integrative-structure of U-shaped groove structure for upper and lower two parts, and the U groove of upper part is wheel locking slot 18, the opening upwards of this wheel locking slot 18, the U-shaped groove of lower part is guide rail locking slot 19, and Open Side Down for this guide rail locking slot 19.Wherein, wheel 8 is contained in wheel locking slot 18 with the position that locking deck 9 is connected, and guide rail 7 is contained in track locking groove 19 with the position that locking deck 9 is connected, and wheel locking slot 18 blocks wheel 8, and track locking groove blocks guide rail 7.
Finally nuclear island girder is lifted and is arranged on end carriage 1 by hanging apparatus, and by bolt or screw rod, girder and end carriage 1 are linked together, and then girder is detected, if erection of main beam is defective, girder sling and the position of end carriage 1 is adjusted, then reinstalling girder; If erection of main beam is qualified, remove end carriage 1 frock for preventing that end carriage 1 from tumbling used is installed, and transport out of job site storage, in order to continuing when follow-up nuclear island is installed, use.
Claims (5)
1. the method that nuclear island end beam of nuclear power station is installed, is characterized in that, the method comprises the steps:
The first step, determines the installation site of end carriage;
Second step is provided with at least two retainer rings on the corresponding nuclear island cylinder inboard wall in the installation site with described end carriage or the top of the civil engineering layer in corresponding described nuclear island cylindrical shell outside is provided with at least two fixed supports in the installation site with described end carriage; Described fixed support is right-angled triangle frame construction, and the rod shaped structure of the vertical edges of this right-angled triangle frame construction protrudes upward vertex of a triangle;
The 3rd step, before lifting end carriage, latch-up structure is arranged on described end carriage, and the installation site of described latch-up structure on described end carriage is corresponding with described retainer ring or support bracket fastened position, to be connected with described retainer ring or fixed support, described end carriage is fixed on the circular orbit beam in described nuclear island, then with hanging apparatus, lift end carriage, so that described end carriage is arranged on described circular orbit beam vertically;
Described latch-up structure is the integrative-structure being formed by right-angled triangle frame construction and rectangular frame structure, described right-angled triangle frame construction is positioned at the top of described rectangular frame structure, and the base of described right-angled triangle frame construction and the top of described rectangular frame structure are same level straight-bar; The straight-bar of the vertical direction of described right-angled triangle frame construction is positioned at described end carriage away from a side of described nuclear island cylinder inboard wall, and stretches out vertex of a triangle along direction straight up; Described rectangular frame structure is enclosed hoop on described end carriage;
The 4th step, after described end carriage hoisted in position, if adopt and be rigidly connected between described latch-up structure and described retainer ring or fixed support, enters next step operation; If adopt and flexibly connect between described latch-up structure and described retainer ring or fixed support, between described end carriage and described nuclear island cylinder inboard wall, intermediate strutting device is set, to avoid described end carriage to tumble towards the direction of described nuclear island cylinder inboard wall;
The 5th step, is fixed on described end carriage on described circular orbit beam by flexibly connecting, and adjusts the position of described end carriage, so that the position of described end carriage meets the installation needs of the girder of described nuclear island, and then unloading hanging apparatus.
2. the method for installation nuclear island end beam of nuclear power station according to claim 1, it is characterized in that, in the 5th step of the method, locking deck is first installed after the adjustment of the position of described end carriage completes, unload again hanging apparatus, to avoid described end carriage slide or roll on described circular orbit beam; Described locking deck is the integrative-structure that is provided with two U-shaped grooves dorsad, and U-shaped groove upward blocks the wheel on described end carriage, and U-shaped groove down blocks the guide rail on described circular orbit beam.
3. the method for installation nuclear island end beam of nuclear power station according to claim 1 and 2, is characterized in that, between described latch-up structure and described retainer ring or described fixed support, with Chain block and/or chain, is connected.
4. the method for installation nuclear island end beam of nuclear power station according to claim 1 and 2, is characterized in that, described intermediate strutting device is jack.
5. the method for installation nuclear island end beam of nuclear power station according to claim 1 and 2, in the 5th step of the method, described flexibly connecting as Chain block and/or chain, by regulating this Chain block and/or chain to regulate the relative position of described end carriage and described circular orbit beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110428863.5A CN102518311B (en) | 2011-12-20 | 2011-12-20 | Method for mounting nuclear island end beam of nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110428863.5A CN102518311B (en) | 2011-12-20 | 2011-12-20 | Method for mounting nuclear island end beam of nuclear power station |
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| CN201410584603.0A Division CN104481154B (en) | 2011-12-20 | 2011-12-20 | The method installing nuclear island end beam of nuclear power station |
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| CN102518311A CN102518311A (en) | 2012-06-27 |
| CN102518311B true CN102518311B (en) | 2014-12-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104060830B (en) * | 2014-06-13 | 2015-05-06 | 长江勘测规划设计研究有限责任公司 | Method for lifting and transporting large parts of underground nuclear power station |
| CN104058333B (en) * | 2014-06-13 | 2016-04-20 | 长江勘测规划设计研究有限责任公司 | A kind of underground nuclear power station reactor building circular crane crossbeam hanging method |
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