CN107795752A - A kind of nuclear power station feedwater piping laterally limits structure and laterally limits method - Google Patents
A kind of nuclear power station feedwater piping laterally limits structure and laterally limits method Download PDFInfo
- Publication number
- CN107795752A CN107795752A CN201710845466.5A CN201710845466A CN107795752A CN 107795752 A CN107795752 A CN 107795752A CN 201710845466 A CN201710845466 A CN 201710845466A CN 107795752 A CN107795752 A CN 107795752A
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- China
- Prior art keywords
- limited part
- feedwater piping
- shear key
- nuclear power
- power station
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Revetment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of nuclear power station feedwater piping to laterally limit structure and method, and structure includes the limited part of the feedwater piping radial motion for limiting；The limited part is connected by fixing bolt with concrete structure；Institute's limited part bottom is provided with shear key.Method includes：(1) analysis feedwater piping show that limited part is subjected to load；(2) size, positioning and the quantity that analysis draws shear key are calculated；(3) size, pre-buried depth and the position in reserved back-grouting hole are determined, and corresponding back-grouting hole is reserved on concrete structure；(4) limited part is fixedly mounted on the concrete structure, shear key is stretched into corresponding back-grouting hole, be in the milk pre-buried.The structure that laterally limits of the present invention undertakes transverse load by shear key, at least partly reduces the shearing load that the fixing bolt of limited part is subject to, whipping event caused by also just reducing bolt failure being capable of effective guarantee safety in production.
Description
Technical field
The present invention relates to laterally limit part shear Design field, and in particular to a kind of nuclear power station feedwater piping laterally limits knot
Structure and laterally limit method.
Background technology
In pressurized-water reactor nuclear power plant, main feed water pipe road is once broken, and due to the effect of spurting of high-temperature high-pressure medium, will be sent out
Raw pipeline whipping, produces huge whipping energy.If not used restraint to whipping pipeline, following secondary harm will be caused：(1)
Destroy nearby device, pipeline, instrument and structures；(2) due to producing plastic hinge secondary breakdown occurs for the pipeline being broken.
In some security-critical fields, to avoid the fracture of main feed water pipe road from causing secondary harm to destroy neighbouring item important to safety,
Further trigger more severe safety accident, tackle main steam and the fracture of main feed water pipe road is prevented.Therefore use main feed water pipe road
Laterally limit part.
Laterally limiting the need of part has shear resistance, and the existing part shearing resistance method that laterally limits mainly uses anchor bolt
Pretension, anchor bolt possess certain shear resistance；But the easy stress corrosion of anchor bolt, while bolt pretightening is excessive,
Finally easily cause the high-strength bolt fracture failure for laterally limiting part.
The content of the invention
It is horizontal it is an object of the invention to provide a kind of nuclear power station feedwater piping for the problems of in the prior art
Limiting structure and method is laterally limited, to ensure that main feed water pipe road laterally limits the shear resistance of part, bolt stress corruption does not occur
Lose fracture failure.
To achieve the above object of the invention, technical scheme is as follows：
A kind of nuclear power station feedwater piping laterally limits structure, includes the limitation of the feedwater piping radial motion for limitation
Part；The limited part is connected by fixing bolt with concrete structure；The limited part bottom is provided with shear key.
Further, above-mentioned nuclear power station feedwater piping laterally limits structure, and the shear key is including longitudinal steel plate and admittedly
Due to the horizontal steel plate of longitudinal steel plate both sides.
Further, above-mentioned nuclear power station feedwater piping laterally limits structure, and two horizontal steel plates are welded in the longitudinal direction
Edges of plate.
Further, above-mentioned nuclear power station feedwater piping laterally limits structure, between the horizontal steel plate and longitudinal steel plate
The welding gradient be 50 °.
Further, above-mentioned nuclear power station feedwater piping laterally limits structure, two horizontal steel plates of the shear key
The same side edge is welded in the limited part bottom, and the length direction of the shear key is perpendicular to plane where limited part.
Further, above-mentioned nuclear power station feedwater piping laterally limits structure, and the shear key is using back-grouting hole
Mode is connected with the concrete structure.
Correspondingly, present invention also offers a kind of nuclear power station feedwater piping to laterally limit method, including：
(1) feedwater piping is arranged in limited part, is carried out mechanical analysis to feedwater piping, is shown that limited part is subjected to carry
Lotus；
(2) bearing capacity that load, the bearing capacity of limited part and single shear key are subjected to according to limited part is carried out
Analysis is calculated, determines size, positioning and the quantity of shear key；
(3) load and shear key size is subjected to according to limited part, positioning and quantity determines what reserved back-grouting was cheated
Size, pre-buried depth and position, and corresponding back-grouting hole is reserved on concrete structure；
(4) limited part is fixedly mounted on the concrete structure, shear key is stretched into corresponding back-grouting hole, is entered
Row grouting is pre-buried.
The invention has the advantages that：
1st, the structure that laterally limits of the invention undertakes transverse load by shear key, at least partly reduces the fixation spiral shell of limited part
The shearing load that bolt is subject to, whipping event caused by also just reducing bolt failure being capable of effective guarantee safety in production.
2nd, it is of the invention to laterally limit method according to part mechanical analysis result is laterally limited, increase steel plate weld bead height, carry
High Weldability, increase shear key quantity, part form and mechanics situation are laterally limited according to different, meet that limited part shearing resistance will
Ask.
Brief description of the drawings
Fig. 1 is the shear key structural representation that one embodiment of the invention center plant feedwater pipeline laterally limits part.
Fig. 2 is the weld seam partial schematic diagram of horizontal steel plate and longitudinal steel plate in Fig. 1.
Fig. 3 is that the nuclear power station feedwater piping of one embodiment of the invention laterally limits the structural representation of part.
Fig. 4 is Fig. 3 face upwarding view.
Fig. 5 is the flow chart that nuclear power station feedwater piping of the present invention laterally limits method.
In above-mentioned accompanying drawing, 1, limited part；2nd, shear key；3rd, feedwater piping mounting hole；4th, horizontal steel plate；5th, longitudinal steel plate；
6th, fixing bolt.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
To avoid nuclear power station feedwater piping that whipping accident occurs, feedwater piping (especially main feed water pipe road) is arranged at limitation
In the feedwater piping mounting hole 3 of part (horizontal line limited part), for bearing the radial load of feedwater piping, limitation feedwater piping is limiting
Move in plane where product, to reduce the generation of whipping accident.
As shown in Figure 3 and Figure 4, the invention provides a kind of nuclear power station feedwater piping to laterally limit structure, for limiting core
Plant feedwater pipeline, security risk caused by whipping is avoided, include the limited part 1 of the feedwater piping radial motion for limitation；
The limited part 1 is connected by fixing bolt 6 with concrete structure；The bottom of limited part 1 is provided with shear key 2.
The structure of shear key 2 of a specific embodiment of the invention as depicted in figs. 1 and 2, including longitudinal steel plate 5 and is fixed on
The horizontal steel plate 4 of the both sides of longitudinal steel plate 5, in the present embodiment, two horizontal steel plates 4 are welded in longitudinal steel plate 5
Horizontal steel plate 4 and longitudinal steel plate 5 can be also integrally formed by edge, those skilled in the art according to the actual requirements.In the present embodiment
In, the welding gradient between the horizontal steel plate 4 and longitudinal steel plate 5 is 50 °, to cause welding to obtain more preferable shearing resistance effect.
The same side edge of two horizontal steel plates 4 of the shear key 2 is welded in the bottom of limited part 1, and described anti-
Cutting the length direction of key 2, (plane where limited part 1 refers to that feedwater piping connects with limited part perpendicular to the place plane of limited part 1
Plane where the section of synapsis), bigger shearing load can be born with this shear key 2.
To ensure the connection between limited part 1 and concrete structure, the shear key 2 using by the way of back-grouting hole and
The concrete structure connection.
As shown in figure 5, nuclear power station feedwater piping provided by the invention laterally limits method, including：
S100, feedwater piping are arranged in limited part 1, are carried out mechanical analysis to feedwater piping, are drawn and held needed for limited part
It is loaded；
S200, the bearing capacity for being subjected to according to limited part 1 load, the bearing capacity of limited part 1 and single shear key 2
Carry out calculating analysis, size, positioning and the quantity of shear key 2；
S300, the load and size of shear key 2, the positioning and reserved back-grouting of quantity determination are subjected to according to limited part 1
The size in hole, pre-buried depth and position, and corresponding back-grouting hole is reserved on concrete structure；
S400, limited part 1 is fixedly mounted on the concrete structure, shear key 2 stretches into corresponding back-grouting hole
In, be in the milk pre-buried.
It is a calculated examples below：
First, mechanical analysis is carried out to feedwater piping, show that limited part is subjected to load；
Known conditions is：
FEM calculation show that the maximum shear of single shear key is made a concerted effort V=2100KN；
FEM calculation draws the maximum tension stress ft=538.42Ma that M85 bolts are born.
Shear key height：H=140mm
Width：B=200mm
Plate thickness：tW=t=35mm
Shearing resistance key length：L=300mm
Base concrete strength grade C40 (axial compressive strength fc=19.1N/mm2, axial tensile strength ft=
1.71N/mm2)。
Bolt tension stress acceptability limit：560.0Mpa (according to industry standard)
Linear support member shear stress acceptability limit：172.9Mpa (according to industry standard)
Calculated and analyzed according to the above results, the material property such as following table of selection：
| Material | Yield strength Sy (MPa) | Tensile strength Su (MPa) |
| 42CrMo M85 bolts | 650 | 790 |
| Q345R sheet materials | 305 | 490 |
And to being evaluated using bolt made of the material and shear key：
1. anchoring bolt is evaluated：
Ft=538.42MPa ＜ 560MPa, intensity meet to require.
2. shear key is evaluated：
Shear key uses thickness of slab to be welded into H profile steel structure for 35mm sheet material, considers that its shear(ing) area obtains shear stress and is
141.76MPa ＜ 172.9MPa, intensity meet to require.
3. shearing-resistant member melt pit concrete local bearing strength is reserved according to above-mentioned calculating and evaluation structural accounting structure
(1) partially loaded area
Al=bL=200 × 300=60000mm2
Ab=3Al
(Al- concrete local compression area；AbThe calculating floor space of-local compression)
(2) intensity during concrete local compression improves coefficient
(3) area of section of melt pit local compression should meet claimed below：
Concrete bearing capacity due to local compression
F=1.35 β c β lfcAl=2679kN ＞ 2100kN, concrete partial pressing meet to require (note：Actual conditions are mixed
Meeting configuration reinforcement, can be greatly improved concrete compression bearing capacity in solidifying soil；During configuration reinforcement, those skilled in the art can be according to this
Field routine techniques makes accommodation to the compression bearing of concrete).
4. determine hole size
According to above-mentioned calculating and evaluation result, in the range of condition is met, it is final check by size 300mm ×
200mm × 140mm, adds constructing operation surplus, and hole is sized to 350mm × 300mm × 240mm.
In this way, the present invention can not have to independent procurement criteria I-steel, can increase according to part mechanical analysis result is laterally limited
Steel plate weld bead height, Weldability is improved, increases the quantity of shear key 2, part form and mechanics situation are laterally limited according to different,
Limited part with shear key 2 of the selection suitable for different situations.The structure that laterally limits of the present invention undertakes transverse direction by shear key 2
Load, at least partly reduce the shearing load that the fixing bolt 6 of limited part is subject to, whipping caused by also just reducing bolt failure
Event, being capable of effective guarantee safety in production.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if belonging to the model of the claims in the present invention and its equivalent technology to these modifications and variations of the present invention
Within enclosing, then the present invention is also intended to comprising including these changes and modification.
Claims (7)
1. a kind of nuclear power station feedwater piping laterally limits structure, it is characterised in that：Radially transported including the feedwater piping for limitation
Dynamic limited part (1)；The limited part (1) is connected by fixing bolt (6) with concrete structure；Limited part (1) bottom
It is provided with shear key (2).
2. nuclear power station feedwater piping as claimed in claim 1 laterally limits structure, it is characterised in that：Shear key (2) bag
Include longitudinal steel plate (5) and be fixed on the horizontal steel plate (4) of longitudinal steel plate (5) both sides.
3. nuclear power station feedwater piping as claimed in claim 2 laterally limits structure, it is characterised in that：Two horizontal steel plates (4)
It is welded in the edge of longitudinal steel plate (5).
4. nuclear power station feedwater piping as claimed in claim 3 laterally limits structure, it is characterised in that：The horizontal steel plate (4)
The welding gradient between longitudinal steel plate (5) is 50 °.
5. nuclear power station feedwater piping as claimed in claim 2 laterally limits structure, it is characterised in that：The shear key (2)
The same side edge of two horizontal steel plates (4) is welded in the limited part (1) bottom, and the length direction of the shear key (2)
Perpendicular to plane where limited part (1).
6. the nuclear power station feedwater piping as described in claim 1-5 is any laterally limits structure, it is characterised in that：The shear key
(2) it is connected by the way of back-grouting hole with the concrete structure.
7. a kind of nuclear power station feedwater piping laterally limits method, it is characterised in that including：
(1) feedwater piping is arranged in limited part, is carried out mechanical analysis to feedwater piping, is shown that limited part is subjected to load；
(2) bearing capacity that load, the bearing capacity of limited part and single shear key are subjected to according to limited part is calculated
Analysis, determine size, positioning and the quantity of shear key；
(3) load and shear key size are subjected to according to limited part, positioning and quantity determine size that reserved back-grouting cheats,
Pre-buried depth and position, and corresponding back-grouting hole is reserved on concrete structure；
(4) limited part is fixedly mounted on the concrete structure, shear key is stretched into corresponding back-grouting hole, is filled
Starch pre-buried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710845466.5A CN107795752B (en) | 2017-09-19 | 2017-09-19 | Transverse limiting structure and transverse limiting method for water supply pipeline of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710845466.5A CN107795752B (en) | 2017-09-19 | 2017-09-19 | Transverse limiting structure and transverse limiting method for water supply pipeline of nuclear power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107795752A true CN107795752A (en) | 2018-03-13 |
| CN107795752B CN107795752B (en) | 2021-07-16 |
Family
ID=61532363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710845466.5A Active CN107795752B (en) | 2017-09-19 | 2017-09-19 | Transverse limiting structure and transverse limiting method for water supply pipeline of nuclear power station |
Country Status (1)
| Country | Link |
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| CN (1) | CN107795752B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081260A (en) * | 2019-05-23 | 2019-08-02 | 江苏慧通管道设备股份有限公司 | A kind of anti-rejection limits device of circular section pressure pipeline annular and its method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2656513A1 (en) * | 1976-12-14 | 1978-06-15 | Babcock Brown Boveri Reaktor | PIPELINE SECURING FOR PIPELINES IN PARTICULAR IN NUCLEAR POWER PLANTS |
| CN102953354A (en) * | 2012-10-19 | 2013-03-06 | 中国核电工程有限公司 | Anti-shearing construction method of underground reinforced concrete trench with water pressure at turning part |
| CN203500663U (en) * | 2013-09-29 | 2014-03-26 | 大连宝原核设备有限公司 | Transverse limit part for main water supply pipe |
| CN105609148A (en) * | 2015-12-24 | 2016-05-25 | 上海核工程研究设计院 | Device for nuclear power plant push-pull device embedded component precision control and installation method thereof |
| EP3032155A1 (en) * | 2014-12-10 | 2016-06-15 | AREVA NP Uddcomb AB | Method for reinforcing pipe support structures for nuclear power plants |
| CN107122529A (en) * | 2017-04-13 | 2017-09-01 | 深圳中广核工程设计有限公司 | The classified calculating method and device of nuclear power plant's process pipe standard suspension and support duct member |
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2017
- 2017-09-19 CN CN201710845466.5A patent/CN107795752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2656513A1 (en) * | 1976-12-14 | 1978-06-15 | Babcock Brown Boveri Reaktor | PIPELINE SECURING FOR PIPELINES IN PARTICULAR IN NUCLEAR POWER PLANTS |
| CN102953354A (en) * | 2012-10-19 | 2013-03-06 | 中国核电工程有限公司 | Anti-shearing construction method of underground reinforced concrete trench with water pressure at turning part |
| CN203500663U (en) * | 2013-09-29 | 2014-03-26 | 大连宝原核设备有限公司 | Transverse limit part for main water supply pipe |
| EP3032155A1 (en) * | 2014-12-10 | 2016-06-15 | AREVA NP Uddcomb AB | Method for reinforcing pipe support structures for nuclear power plants |
| CN105609148A (en) * | 2015-12-24 | 2016-05-25 | 上海核工程研究设计院 | Device for nuclear power plant push-pull device embedded component precision control and installation method thereof |
| CN107122529A (en) * | 2017-04-13 | 2017-09-01 | 深圳中广核工程设计有限公司 | The classified calculating method and device of nuclear power plant's process pipe standard suspension and support duct member |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081260A (en) * | 2019-05-23 | 2019-08-02 | 江苏慧通管道设备股份有限公司 | A kind of anti-rejection limits device of circular section pressure pipeline annular and its method |
| CN110081260B (en) * | 2019-05-23 | 2024-03-15 | 江苏慧通管道设备股份有限公司 | Annular anti-swing limiting device and method for circular-section pressure pipeline |
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| CN107795752B (en) | 2021-07-16 |
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