CN203384499U - High-seismic-resistance ladder type cable bridge for nuclear island of nuclear power plant - Google Patents
High-seismic-resistance ladder type cable bridge for nuclear island of nuclear power plant Download PDFInfo
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- CN203384499U CN203384499U CN201320409647.0U CN201320409647U CN203384499U CN 203384499 U CN203384499 U CN 203384499U CN 201320409647 U CN201320409647 U CN 201320409647U CN 203384499 U CN203384499 U CN 203384499U
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Abstract
The utility model belongs to a mechanical device for protecting cables in a nuclear island area of a nuclear power plant, and particularly relates to a high-seismic-resistance ladder type cable bridge for a nuclear island of a nuclear power plant. The high-seismic-resistance ladder type cable bridge structurally comprises two ladder sides and a plurality of cross arms which are punched by a whole plate, wherein the plurality of cross arms are arranged between the two ladder sides in parallel, a groove-shaped reinforcing rib is formed in each cross arm, and two ends, connected with the ladder sides, of each groove-shaped reinforcing rib adopt a Y-shaped branched structure. By means of the Y-shaped branched structures, the contact area of the cross arm and the ladder sides is increased, the stress is dispersed, the bearing strength of the cross arms is improved, and the cable bearing requirement can be met under the condition that the thickness of a bridge thickness is not increased.
Description
Technical field
The utility model belongs to the mechanical device of nuclear power plant's nuclear island zone protection cable, is specifically related to the high antidetonation ladder-type cable bridge of a kind of nuclear island of nuclear power station.
Background technique
The cable testing bridge system is the important product of a class in manufacturing industry, is for the main equipment of standard, protection cable and electric transmission line safety in each infrastructure project.The structural design of its terraced limit of ladder-type cable bridge, cross-arm has directly determined the overall performance of crane span structure (comprising the aspects such as bearing capacity, shock resistance, working life, outward appearance).
Traditional old-fashioned ladder-type cable bridge structure is that two terraced limits and cross-arm form at present, between two terraced limits and cross-arm, means of fixation commonly used has riveted joint, grafting or welding, because the intensity of riveted joint and plug in structure carrying is limited, therefore two terraced limits and cross-arm adopt the mode of welding to fix more.It is circular arc crimp or right angle side that the structure on old-fashioned terraced limit adopts top more, is the right-angle folding crimp below; Cross-arm mostly is U-shaped or π type.
There is following defect in old-fashioned ladder-type cable bridge:
1) docking port and solder joint cause the crane span structure total bearing capacity to descend, and less stable only has the thickness by increasing crane span structure sheet material to improve its bearing capacity and stability.This mode not only serious waste steel resources, do not meet the requirement of national energy-saving consumption reduction, and, due to the increase that increases plate material thickness and cause the crane span structure deadweight, increased the deadweight of supporting environment simultaneously, affect the antidetonation level of crane span structure system.
2) welding procedure of crane span structure can discharge a large amount of harmful gases such as CO2 when crane span structure welds, and environment is caused to certain pollution.Simultaneously, because of the existence of welding procedure, will inevitably there is the sour regurgitation phenomenon of zinc-plated rear part, cause the decline of the anticorrosion grade of soldering point, reduce its working life.
3), when cabling, the hidden danger that there is the scratch cable at the upper burr of beating of curved edges (or right angle side) or cusped edge place, be unfavorable for the carrying out of on-site cable cable laying operation.
4) cross-arm and terraced limit are artificial welding, its overall appearance is subject to artificial factors, work efficiency is not high, and its overall performance Safety performance is not high, crane span structure is when the workshop of shaking or the foreign object strike run into or earthquake disaster, be easy to from solder joint be distorted, crack conditions, Safety performance is not high, anti-seismic performance is lower.
The model utility content
The purpose of this utility model is to provide a kind of high strength, the high antidetonation ladder-type cable bridge of high corrosion-resistant nuclear island of nuclear power station, when the nuclear island of nuclear power station zone produces the design basis earthquake accident, guarantee under the fault condition produced at safe shutdown earthquake (SL ?2) that its cable testing bridge system is not damaged, thereby ensure that the nuclear safety relevant cables still can normally move.
The technical solution of the utility model is as follows: the high antidetonation ladder-type cable bridge of nuclear island of nuclear power station, comprise two terraced limits and several cross-arms of being made by the monoblock plate stamping, several cross-arms be arranged in parallel between two terraced limits, be provided with the flute profile stiffening rib on each cross-arm, the Y-shaped bifurcation structure in two ends that described flute profile stiffening rib is connected with terraced limit.
Further, the high antidetonation ladder-type cable bridge of nuclear island of nuclear power station as above, wherein, the middle cross section of described flute profile stiffening rib is π shape, at the upper surface of flute profile stiffening rib, is provided with some mounting holes.
Further, the high antidetonation ladder-type cable bridge of nuclear island of nuclear power station as above, wherein, described terraced limit is I-shaped structure, and the horizontal two ends on top, terraced limit are circular arc, and centre is linear section structure; Bottom, ladder limit is connected with described cross-arm by arc structure.
Further, the high antidetonation ladder-type cable bridge of nuclear island of nuclear power station as above, wherein, be provided with several mounting holes on described top, terraced limit and side; Described mounting hole is long-round-shape.
The beneficial effects of the utility model are as follows: the utility model adopts the monoblock plate stamping to make, without welding, the environmental pollution of having avoided welding procedure to cause, improved the antiseptic power of product, reduced the impact of welding on crane span structure sheet material stress, stiffening rib simultaneously that be flute profile on cross-arm in the middle of arranging, and cross-arm integral body is presented the curved arch structural design, the total bearing capacity of crane span structure and downward flex resistance have greatly been improved, in the middle of cross-arm, the Y-shaped bifurcated in two ends of flute profile stiffening rib has not only increased the surface of contact on cross-arm and terraced limit, disperseed lifting surface area, and improved the bearing strength of cross-arm, do not need just can meet the requirement of load-bearing cable in the situation by increasing crane span structure section bar thickness.
The utility model, with respect to traditional ladder-type cable bridge, also has following advantage:
(1) global formation, work efficiency is high; Adopt the mould punching moulding, change the original mechanical structure of material, directly stamp out stiffening rib and form cross-arm on crane span structure ground, then global formation, form the high antidetonation ladder-type cable bridge of three generations's nuclear island of nuclear power station.
(2) corrosion resistance is strong: due to the moulding of crane span structure integral die, avoided all defect of welding, without any docking hidden danger, have corrosion-resistant by force, the intensity advantages of higher.
(3) high shock resistance: the crane span structure global formation, many U-shapeds structural design on terraced limit and bottom cross-arm coordinate, and have effectively strengthened the flex resistance of crane span structure all directions, make crane span structure have high shock resistance.
(4) high strength: terraced limit, cross-arm all improve on conventional construction, comprise that the Y shape muscle at arch structure, cross-arm two ends on the arc of terraced limit I-shaped structure, cross-arm all can effectively improve intensity and the bearing capacity of crane span structure integral body.
The accompanying drawing explanation
The overall diagram that Fig. 1 is the high antidetonation ladder-type cable bridge of the utility model nuclear island of nuclear power station;
The local structural graph that Fig. 2 is the high antidetonation ladder-type cable bridge of the utility model nuclear island of nuclear power station;
The cross-section structure that Fig. 3 is the high antidetonation ladder-type cable bridge of the utility model nuclear island of nuclear power station;
The sectional view that Fig. 4 is A-A direction in Fig. 2;
The sectional view that Fig. 5 is B-B direction in Fig. 2;
The sectional view that Fig. 6 is C-C direction in Fig. 2.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Fig. 1-Fig. 6, the high antidetonation ladder-type cable bridge of three generations's nuclear island of nuclear power station of the present utility model, comprise two terraced limits 5,7 and several cross-arms 6, this ladder limit 5,7 and cross-arm 6 are made for the monoblock plate stamping, several cross-arms 6 be arranged in parallel between two terraced limits 5,7, and sheet material can adopt carbon steel, stainless steel etc. can meet the sheet material of requirement of strength.Each cross-arm 6 is provided with grooved stiffening rib 4, the Y-shaped bifurcated in the two ends of this grooved stiffening rib 4, and stressed more even, intensity is higher.
As shown in Figure 3, terraced limit 5,7 overall structures are I-shape construction, have greatly improved the flex resistance of crane span structure bearing capacity and vertical aspect in the high antidetonation ladder-type cable bridge of three generations's nuclear island of nuclear power station of the present utility model cross section.Upper level two ends, ladder limit are circular arc, centre is linear section structure, the inverted U structure that is similar to two levels forms, each arc-shaped structure all can improve crane span structure intensity and flex resistance, simultaneously between arc-shaped structure 1,2, having increased by one section straightway can increase the stability of crane span structure, and further strengthen crane span structure flex resistance (crane span structure is when adding loads, and dual-side is to inner flexural stress) in the horizontal direction.Bottom, ladder limit has increased the U-shaped structure that arc-shaped structure 3(tilts), improved about crane span structure and upper and lower anti-bending strength simultaneously, further improved the bearing capacity of crane span structure, when no matter cable is placed or taken out simultaneously, with the crane span structure contact position be all arc surface, can avoid the scuffing hidden danger of cable.Cross-arm 6 increases the design of arch arcuate structure, has greatly strengthened the bearing capacity of crane span structure.
The Y-shaped bifurcation structure in two ends that flute profile stiffening rib 4 is connected with terraced limit, its cross section as shown in Figure 4, the Y shape bifurcated has not only increased the surface of contact on cross-arm and terraced limit, disperseed lifting surface area, and improved the bearing strength of cross-arm, do not needed just can meet the requirement of load-bearing cable in the situation by increasing crane span structure section bar thickness.
Respectively as shown in Figure 5,6, wherein cross section is π shape to the structure of flute profile stiffening rib 4 other position cross sections, and on π shape, plane is provided with several vertical long-round-shape mounting holes.
The high antidetonation ladder-type cable bridge of three generations's nuclear island of nuclear power station of the present utility model at crane span structure under earthquake conditions, its overall structure is conducive to the whole uniform stressed of crane span structure, and arc-shaped structure 1,2,3 and flute profile stiffening rib 4 structures on terraced limit are worked in coordination, make crane span structure integral body all there is very strong flex resistance in all directions, by professional softwares such as PROE, ANSYS, this product is carried out to mechanical analysis, calculate the proof product and meet the nuclear island shockproof requirements that level and vertical direction seismic acceleration are 0.3g, thereby guarantee the safe operation of nuclear safety relevant cables.
The high antidetonation ladder-type cable bridge of three generations's nuclear island of nuclear power station of the present utility model cross-arm top, terraced avris section with above be evenly equipped with mounting hole 8,9 structures, as shown in Figure 1, 2, mounting hole 8,9 all is long-round-shape, make its crane span structure there is better thermal diffusivity and gas permeability, simultaneously, can meet various on-the-spot installation environments, the supporting connection of crane span structure and cable, cover plate and relevant attached accessory, install all extremely for convenience, and can greatly improve crane span structure installation efficiency at the scene.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if of the present utility model these are revised and within modification belongs to the scope of the utility model claim and equivalent technology thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (5)
1. the high antidetonation ladder-type cable bridge of nuclear island of nuclear power station, it is characterized in that: comprise two terraced limits (5,7) and several cross-arms (6) of being made by the monoblock plate stamping, several cross-arms (6) be arranged in parallel between two terraced limits (5,7), be provided with flute profile stiffening rib (4) on each cross-arm (6), the Y-shaped bifurcation structure in two ends that described flute profile stiffening rib (4) is connected with terraced limit (5,7).
2. the high antidetonation ladder-type cable bridge of nuclear island of nuclear power station as claimed in claim 1, it is characterized in that: the middle cross section of described flute profile stiffening rib (4) is π shape, at the upper surface of flute profile stiffening rib, is provided with some mounting holes (8).
3. the high antidetonation ladder-type cable bridge of nuclear island of nuclear power station as claimed in claim 1 or 2, it is characterized in that: described terraced limit (5,7) are I-shaped structure, and the horizontal two ends on top, terraced limit are circular arc (1,2), and centre is linear section structure; Bottom, ladder limit is connected with described cross-arm by arc structure (3).
4. the high antidetonation ladder-type cable bridge of nuclear island of nuclear power station as claimed in claim 3, is characterized in that: on described top, terraced limit and side, be provided with several mounting holes (9).
5. the high antidetonation ladder-type cable bridge of nuclear island of nuclear power station as claimed in claim 4, it is characterized in that: described mounting hole (9) is long-round-shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320409647.0U CN203384499U (en) | 2013-07-10 | 2013-07-10 | High-seismic-resistance ladder type cable bridge for nuclear island of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320409647.0U CN203384499U (en) | 2013-07-10 | 2013-07-10 | High-seismic-resistance ladder type cable bridge for nuclear island of nuclear power plant |
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| Publication Number | Publication Date |
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| CN203384499U true CN203384499U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320409647.0U Expired - Fee Related CN203384499U (en) | 2013-07-10 | 2013-07-10 | High-seismic-resistance ladder type cable bridge for nuclear island of nuclear power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398228A (en) * | 2013-07-10 | 2013-11-20 | 中国核电工程有限公司 | Nuclear power station nuclear island high anti-seismic ladder type cable bridge |
| CN111614032A (en) * | 2020-06-11 | 2020-09-01 | 上海外高桥造船有限公司 | Cable bracket |
-
2013
- 2013-07-10 CN CN201320409647.0U patent/CN203384499U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398228A (en) * | 2013-07-10 | 2013-11-20 | 中国核电工程有限公司 | Nuclear power station nuclear island high anti-seismic ladder type cable bridge |
| CN111614032A (en) * | 2020-06-11 | 2020-09-01 | 上海外高桥造船有限公司 | Cable bracket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20190710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |