CN108320823B - Anti-falling platform in nuclear power condenser - Google Patents
Anti-falling platform in nuclear power condenser Download PDFInfo
- Publication number
- CN108320823B CN108320823B CN201810228113.5A CN201810228113A CN108320823B CN 108320823 B CN108320823 B CN 108320823B CN 201810228113 A CN201810228113 A CN 201810228113A CN 108320823 B CN108320823 B CN 108320823B
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- Prior art keywords
- limiting
- condenser
- fixing
- tube
- plate
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- 239000004744 fabric Substances 0.000 claims abstract description 41
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000010936 titanium Substances 0.000 claims abstract description 21
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 21
- 229920000271 Kevlar® Polymers 0.000 claims description 22
- 239000004761 kevlar Substances 0.000 claims description 22
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 11
- 239000004917 carbon fiber Substances 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 13
- 239000004566 building material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 206010019345 Heat stroke Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/02—Arrangements of auxiliary equipment
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
An anti-falling object platform in a nuclear power condenser comprises a covering cloth (200) positioned above a titanium tube (100) of the condenser and a limiting structure for limiting the position of the covering cloth (200). The anti-falling platform in the nuclear condenser is ingenious in design and high in practicability.
Description
Technical Field
The invention relates to the field of overhaul equipment of nuclear power plants, in particular to an anti-falling platform in a nuclear power condenser.
Background
For the HN1000-6.43 type steam turbine of Siemens, germany (as shown in FIGS. 1-4), it has 1 high pressure cylinder and 2 low pressure cylinders. Each low-pressure cylinder corresponds to one condenser, and the condenser and the low-pressure outer cylinder are rigidly connected into a whole through welding. The condenser device mainly has the following functions: and receiving exhaust steam of the low-pressure cylinder of the steam turbine, and converting the exhaust steam into condensed water so that the steam-water system forms a closed cycle. The low-pressure cylinder of the cooling steam turbine is exhausted by using seawater; two groups of titanium tube bundles are arranged in each condenser, as shown in fig. 5: each group of titanium tube bundles has 13539 titanium tubes, and seawater is drained through the titanium tubes. The two condensers are respectively arranged below the two low-pressure cylinders. The two condenser shells are separated from each other, and each forms an independent steam space.
When the overhaul works, in particular to the overhaul work of the low-pressure cylinder opening of the steam turbine, an anti-falling object platform needs to be erected in the condenser, and the existing platform is erected by using an aluminum springboard, a steel scaffold tube, a fastener and the like. In practice it is found that: in the erection process, the erection material falls off, and the personnel have industrial safety risks such as high labor intensity (one low-pressure cylinder needs to continuously work for 36 hours), easy dehydration, heatstroke and the like.
Further, the problem that the titanium tube is crushed easily caused by falling of the setting material. If the titanium pipe is damaged, the water chamber is usually required to be detached firstly, and the disassembly and assembly period of the water chamber is about 10 days; when the titanium tube is disassembled, the tube holes on the tube plate are required to be plugged, and circulating cooling water is prevented from entering a steam area of the condenser, wherein the replacement period of one titanium tube is about 4 hours; if the damaged titanium pipe is not treated, as the cooling water in the titanium pipe of the condenser of the coastal power plant is seawater (the inland power plant is fresh water), the seawater is corrosive to equipment, and the circulating cooling water enters the steam area of the condenser and is converged with the condensed water, the condensed water quality is reduced, and the power of the unit is forced to be reduced until the unit is stopped.
Disclosure of Invention
The invention aims to solve the technical problems and provides an anti-falling object platform in a nuclear power condenser.
The technical scheme for solving the technical problems is as follows:
The invention provides an anti-falling object platform in a nuclear electric condenser, which comprises a covering cloth positioned above a titanium tube of the condenser and a limiting structure for limiting the position of the covering cloth.
In the anti-falling object platform in the nuclear power condenser, the covering cloth adopts Kevlar cloth; the Kevlar cloth is sewn by four layers.
In the anti-falling object platform in the nuclear power condenser, the edges of the covering cloth are provided with ropes; the limiting structure comprises a fastener structure for fixing the covering cloth, the fastener structure comprises a vertical pipe, a fixing plate which is axially inserted on the top of the vertical pipe and used for being sleeved and fixed by ropes, a first transverse pipe which is sleeved on the fixing plate and supported on the top of the vertical pipe, a second transverse pipe which penetrates through the fixing plate, and a limiting pipe which is inserted on the top of the fixing plate and matched with the second transverse pipe to limit the positions of the ropes therebetween.
In the anti-falling object platform in the nuclear power condenser, the top of the vertical pipe is provided with the first long groove extending along the axial direction of the vertical pipe; the fixed plate is inserted into the first long groove; the first transverse tube is provided with a first through hole extending along the radial direction of the first transverse tube, and the first transverse tube is sleeved on the fixed plate through the first through hole.
In the anti-falling object platform in the nuclear power condenser, the fixing plates are provided with the second through holes, and the second transverse pipes are respectively arranged through the second through holes of at least two fixing plates.
In the anti-falling object platform in the nuclear power condenser, the second long groove extending along the axial direction of the limiting pipe is formed at the bottom of the limiting pipe, and the limiting pipe is inserted into the top of the fixing plate through the second long groove.
In the anti-falling object platform in the nuclear power condenser, two adjacent covering cloths are tightly attached through the magic tape.
In the anti-falling object platform in the nuclear power condenser, the limiting structure further comprises a vertical plate leaning on the wall surface of the condenser and a limiting plate which is inserted on the vertical plate and is used for axially inserting the first transverse pipe; the limiting structure also comprises a carbon fiber tube which is fixed on the limiting plate and used for penetrating and fixing the edge of the covering cloth.
In the anti-falling object platform in the nuclear power condenser, the carbon fiber tube is fixed on the limiting plate by adopting the connecting piece;
a fourth long groove is formed in the bottom of the connecting piece and is spliced on the limiting plate through the fourth long groove; the fixed slot for fixing the carbon fiber tube is formed in the top of the connecting piece.
The anti-falling object platform in the nuclear condenser adopts Kevlar cloth as a main material, and is matched with a novel fastener to realize the characteristics of light and handy erection material, simple operation, safe use, low erection labor intensity, high erection speed, no damage to a titanium tube after the erection material falls off, and the like, and the on-site erection time is controlled within 8 hours. The weight bearing of the building material per square meter is more than 270KG, people can walk on the upper portion of the building material, and foreign matters above the building material can be effectively intercepted by falling, so that the damage of the titanium tube is prevented. Meanwhile, the anti-falling platform in the nuclear condenser also reduces the labor intensity of erection personnel, and greatly reduces the overhaul period. The anti-falling platform in the nuclear condenser is ingenious in design and high in practicability.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 shows a schematic general structural diagram of a HN1000-6.43 type steam turbine;
Fig. 2 shows a schematic external structure of a low pressure cylinder of the HN1000-6.43 type steam turbine shown in fig. 1;
FIG. 3 is a schematic cross-sectional view showing the internal structure of the low pressure cylinder shown in FIG. 2;
FIG. 4 is a schematic view showing the internal structure of the low pressure cylinder shown in FIG. 2;
FIG. 5 shows a titanium tube layout within a nuclear condenser of the HN1000-6.43 type steam turbine shown in FIG. 1;
fig. 6 shows a schematic structural diagram of an anti-falling platform in a nuclear condenser according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a fastener structure of a limiting structure of an anti-falling object platform in the nuclear power condenser shown in FIG. 6;
Fig. 8 shows a schematic structural view of a riser and a limiting plate of a limiting structure of an anti-falling platform in the nuclear power condenser shown in fig. 6.
Detailed Description
The technical problems to be solved by the invention are as follows: the existing anti-falling object platform is usually erected by using aluminum gangboards, steel scaffold pipes, fasteners and the like, and the erected materials are easy to fall off, so that the risk of material loss such as titanium pipe damage and the like can be caused, and the overhaul period can be prolonged. Meanwhile, a large amount of manpower is needed for erecting the overhaul platform by using the scaffold, and meanwhile, the cost control of overhaul and the optimization of the overhaul period are not facilitated. The technical thought provided by the invention regarding the technical problem is as follows: the novel fastener is designed to be matched with the cover cloth, and the cover cloth is made of Kevlar cloth, so that a falling object prevention platform in the nuclear power condenser is constructed.
In order to make the technical objects, technical solutions and technical effects of the present invention more apparent, so as to facilitate understanding and implementation of the present invention by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific examples.
Fig. 6 shows a schematic structural diagram of an anti-falling platform in a nuclear condenser according to an embodiment of the present invention. The anti-falling object platform in the nuclear power condenser comprises a covering cloth 200 positioned above the titanium tube 100 of the condenser and a limiting structure for limiting the position of the covering cloth 200. In the invention, the covering cloth 200 is made of Kevlar cloth, wherein the Kevlar cloth is light in weight, the weight of 1m 2 is only 1kg, and meanwhile, the Kevlar cloth is a nonmetallic material, if personnel errors occur in the erecting process, the erecting material falls off, and the titanium tube is not damaged by the erecting material after falling off. The filament of kevlar is made in the united states, and kevlar is widely used in the military field at present, such as tanks, airplanes and the like. According to practical needs, in this embodiment, each piece of kevlar cloth is cut to a size of 4.5m long, 1.5m wide and a weight of 6kg. Therefore, the area of 170m 2 in one condenser can be set up only by 4 people for 8 hours.
Further, four layers of sewing are adopted for the Kevlar cloth, so that 270kg of bearing per square meter can be met, namely, after the anti-falling object platform is installed, if two people walk on a single Kevlar cloth at the same time, the Kevlar cloth cannot be torn. Similarly, a weight of 30kg falls off at a position of 10 meters high and is crashed on the Kevlar cloth, and the Kevlar cloth cannot be damaged.
Further, the Kevlar cloth and the limiting structure are fixed through a rope, and the rope is formed by weaving wires of the Kevlar cloth; therefore, according to the maintenance characteristics of the nuclear turbine and the structural characteristics of equipment in the condenser, the Kevlar cloth is adopted to replace original building materials (such as a springboard, a steel pipe and a fastener), the installation difficulty of the anti-falling object platform in the nuclear turbine is reduced through the characteristics of light weight and flexibility, and the labor cost and the construction period are also reduced through a simple fixing mode.
Further, as shown in fig. 7, fig. 7 shows a structural schematic diagram of a fastener structure of a limiting structure of the anti-falling object platform in the nuclear power condenser shown in fig. 6; the edge of the cover cloth 200 is provided with a rope 210; the restraining structure includes a fastening structure 300 for fixing the drape 200, the fastening structure 300 including a stand pipe 310, a fixing plate 320 axially inserted on top of the stand pipe 310 for the ropes 210 to be sleeved and fixed, a first cross pipe 330 sleeved on the fixing plate 320 and supported on top of the stand pipe 310, a second cross pipe 340 penetrating the fixing plate 320, and a restraining pipe 350 inserted on top of the fixing plate 320 and cooperating with the second cross pipe 340 to define a position of the ropes 210 therebetween.
Specifically, in the present embodiment, riser 310 is preferably disposed vertically. A first long groove 311 extending along the axial direction of the vertical pipe 310 is formed at the top of the vertical pipe 310; the fixing plate 320 is inserted into the first elongated groove 311, thereby achieving the insertion of the fixing plate 320 with the stand pipe 310. Here, the fixing plate 320 has only one translational degree of freedom in the horizontal plane by the first elongated slot 311 of the stand pipe 310.
Further, the first transverse tube 330 is provided with a first through hole 331 extending along a radial direction thereof, and the first transverse tube 330 is sleeved on the fixing plate 320 through the first through hole 331, i.e. the fixing plate 320 is penetrated in the first through hole 331. Here, another translational degree of freedom of the fixing plate 320 in the horizontal plane is also defined by the first through hole 331 of the first cross tube 330, thereby achieving complete fixing of the fixing plate 320 in the horizontal direction.
Further, the fixing plate 320 is provided with second through holes 321, and the second transverse tubes 340 are respectively arranged in the second through holes 321 of at least two fixing plates 320 in a penetrating manner; and the second cross tube 340 is fixed by at least two fixing plates 320. The restriction of the horizontal relative position of the at least two fixing plates 320 is also achieved by the second transverse tube 340.
Further, in the present embodiment, a second elongated groove 351 extending in the axial direction of the defining tube 350 is opened at the bottom of the defining tube 350, and the defining tube 350 is inserted at the top of the fixing plate 320 through the second elongated groove 351 thereof. By the limiting tube 350, it is possible to limit the degree of freedom of vertical movement of the rope 210 that is fitted over the fixing plate 320 and located between the limiting tube 350 and the second lateral tube 340, thereby realizing the falling preventing function of the drape 200.
Further, the two adjacent covering cloths 200 are tightly attached by the magic tape, so that a gap does not exist in the main body of the anti-falling platform in the nuclear power condenser formed by the covering cloths 200.
Further, as shown in fig. 8, fig. 8 shows a schematic structural view of a riser and a limiting plate of a limiting structure of an anti-falling platform in the nuclear power condenser shown in fig. 6; aiming at the structural characteristics of equipment with no fixed points on four corner walls of the condenser, the limiting structure further comprises a vertical plate 360 leaning on the wall of the condenser and a limiting plate 370 which is inserted on the vertical plate 360 and is used for axially inserting the first transverse tube 330. Specifically, the end of the first transverse tube 330 is provided with a third elongated slot 332, and the limiting plate 370 is inserted into the third elongated slot 332. The limiting structure further includes a carbon fiber tube 380 fixed to the limiting plate 370 for penetrating and fixing the edge of the cover cloth 200. Here, by using the carbon fiber tube 380 to pass through the kevlar cloth, the falling object can be prevented from falling along the condenser.
Preferably, in the present embodiment, the carbon fiber pipe 380 is fixed to the limiting plate 370 by using a connector 390. Specifically, a fourth long groove 391 is formed at the bottom of the connecting piece 390, and the connecting piece is inserted into the limiting plate 370 through the fourth long groove 391; meanwhile, a fixing groove 392 for fixing the carbon fiber pipe 380 is formed at the top of the connector 390. It will be appreciated that in this embodiment, the carbon fiber tube 380 may be secured to the retainer plate 370 by means such as extrusion, clamping, bonding, and the like. And these fixing means should be within the scope of the present invention.
The anti-falling object platform in the nuclear condenser adopts Kevlar cloth as a main material, and is matched with a novel fastener to realize the characteristics of light and handy erection material, simple operation, safe use, low erection labor intensity, high erection speed, no damage to a titanium tube after the erection material falls off, and the like, and the on-site erection time is controlled within 8 hours. The weight bearing of the building material per square meter is more than 270KG, people can walk on the upper portion of the building material, and foreign matters above the building material can be effectively intercepted by falling, so that the damage of the titanium tube is prevented. Meanwhile, the anti-falling platform in the nuclear condenser also reduces the labor intensity of erection personnel, and greatly reduces the overhaul period. The anti-falling platform in the nuclear condenser is ingenious in design and high in practicability.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (7)
1. The anti-falling object platform in the nuclear power condenser is characterized by comprising a covering cloth (200) positioned above a titanium pipe (100) of the condenser and a limiting structure for limiting the position of the covering cloth (200);
The edge of the covering cloth (200) is provided with a rope (210); the limiting structure comprises a fastener structure (300) for fixing the covering cloth (200), wherein the fastener structure (300) comprises a vertical pipe (310), a fixing plate (320) axially inserted on the top of the vertical pipe (310) and used for sleeving and fixing the ropes (210), a first transverse pipe (330) sleeved on the fixing plate (320) and supported on the top of the vertical pipe (310), a second transverse pipe (340) penetrating through the fixing plate (320) and a limiting pipe (350) inserted on the top of the fixing plate (320) and matched with the second transverse pipe (340) to limit the positions of the ropes (210) between the fixing plate and the fixing plate;
A first long groove (311) extending along the axial direction of the vertical pipe (310) is formed at the top of the vertical pipe (310); the fixing plate (320) is inserted into the first long groove (311); the first transverse tube (330) is provided with a first through hole (331) extending along the radial direction of the first transverse tube, and the first transverse tube (330) is sleeved on the fixed plate (320) through the first through hole (331).
2. The nuclear condenser internal anti-falling object platform according to claim 1, wherein the cover cloth (200) is kevlar cloth; the Kevlar cloth is sewn by four layers.
3. The nuclear power condenser inner anti-falling object platform according to claim 1, wherein the fixing plates (320) are provided with second through holes (321), and the second transverse pipes (340) are respectively arranged through the second through holes (321) of at least two fixing plates (320).
4. A nuclear condenser internal anti-falling platform according to claim 3, wherein the second elongated groove (351) extending along the axial direction of the limiting tube (350) is formed at the bottom of the limiting tube (350), and the limiting tube (350) is inserted into the top of the fixing plate (320) through the second elongated groove (351).
5. The nuclear condenser internal anti-falling object platform according to claim 1, wherein two adjacent covering cloths (200) are tightly attached through a magic tape.
6. The nuclear condenser internal anti-falling platform according to claim 1, wherein the limiting structure further comprises a vertical plate (360) leaning on the wall surface of the condenser, and a limiting plate (370) which is inserted on the vertical plate (360) and is used for axially inserting the first transverse tube (330); the limiting structure also comprises a carbon fiber tube (380) which is fixed on the limiting plate (370) and used for penetrating and fixing the edge of the covering cloth (200).
7. The nuclear condenser internal falling object prevention platform according to claim 6, wherein the carbon fiber tube (380) is fixed on the limiting plate (370) by adopting a connecting piece (390);
A fourth long groove (391) is formed in the bottom of the connecting piece (390), and the connecting piece is inserted into the limiting plate (370) through the fourth long groove (391); the top of the connecting piece (390) is provided with a fixing groove (392) for fixing the carbon fiber tube (380).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810228113.5A CN108320823B (en) | 2018-03-20 | 2018-03-20 | Anti-falling platform in nuclear power condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810228113.5A CN108320823B (en) | 2018-03-20 | 2018-03-20 | Anti-falling platform in nuclear power condenser |
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| Publication Number | Publication Date |
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| CN108320823A CN108320823A (en) | 2018-07-24 |
| CN108320823B true CN108320823B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810228113.5A Active CN108320823B (en) | 2018-03-20 | 2018-03-20 | Anti-falling platform in nuclear power condenser |
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| CN (1) | CN108320823B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108320823A (en) | 2018-07-24 |
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