CN106500939B - A method of pipe U-shaped section of equivalent stiffness support construction of heat transfer and realization support - Google Patents
A method of pipe U-shaped section of equivalent stiffness support construction of heat transfer and realization support Download PDFInfo
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- CN106500939B CN106500939B CN201610929860.2A CN201610929860A CN106500939B CN 106500939 B CN106500939 B CN 106500939B CN 201610929860 A CN201610929860 A CN 201610929860A CN 106500939 B CN106500939 B CN 106500939B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
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- Supports For Pipes And Cables (AREA)
Abstract
The invention discloses a kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer and implementation methods, pipe U-shaped section of equivalent stiffness support construction of the heat transfer includes elastic support sheet, connection bolt and fixing nut, the elastic support sheet is fixed on the connection bolt wherein end face of one end, fixing nut is socketed on connection bolt, the elastic support sheet includes egative film and arc-like sheet, the egative film is affixed with the end face for connecting bolt, one end of arc-like sheet is fixed on wherein one end of egative film, and the free end of arc-like sheet extends to the other end of egative film.The present invention is capable of providing the overall stiffness of heat-transfer pipe, and does not interfere External airflow field, while the support is with simple in structure, easy to process, disturbance flow field is reduced to greatest extent, being applicable in can flexibly install at an arbitrary position, and range in stiffness adjustable range is wide, adjust the features such as being easy.
Description
Technical field
The present invention relates to steam generator fields, and in particular to a kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer and reality
Existing method for supporting.
Background technology
The heat-transfer pipe of steam generator is easy to happen vibration under the two phase flow effect of secondary side, and bundle vibration can cause
A series of mechanics problem of heat-transfer pipes.The also boundary effect with primary Ioops water of the steam generator heat-transfer pipe beam of nuclear industry, pipe
There is breakage in Shu Yidan, and primary Ioops water with radionuclide can leak into secondary circuit, cause extremely serious leakage accident.Therefore
The mechanical integrity of assessment steam generator heat-transfer pipe beam is an important link for designing steam generator.Research and assessment are steamed
The Flow vibration problem of one of the dynamics problem of vapour generator heat-transfer pipe is often carried out by means of the mode of experimental study.It is steaming
In the experiment of machanics of vapour generator tube bank, bundle vibration characteristic is understood, it is particularly important to the analysis of the dynamic behavior of tube bank.
But a complete steam generator frequently includes thousands of heat-transfer pipes, is completely tested these tube banks often not existing
Real.General way is to carry out the model experiment of part.The general several rows for taking tube bank intermediate test as test model.
The heat-transfer pipe of steam generator is made of straight pipe and U-shaped bend pipe.Straight pipe is due to having different sections of support plate about
The general rigidity of beam is larger.And in the pipe U-shaped bend loss that conducts heat, the out-of-plane rigidity where bend pipe is weaker, and intrinsic frequency is relatively low.
In face outside direction vibration by a relatively large margin occurs for U-shaped bend pipe in order to prevent, using the insertion vibrationproof item between the tube bank of different rows
Mode prevent tube bank between gouging abrasion.Vibrationproof item is inserted into the mode in the gap between tube bank, is not connected with tube bank, because
And the vibration of the face outside direction of U-shaped bend pipe can only be constrained.It facts have proved that the design of vibrationproof mode is greatly reduced heat-transfer pipe
Flow vibration problem.Due to only having taken intermediate several combs to result in part due to the reduction of tube bank in partial model experiment
Stiffness reduction of the heat-transfer pipe of model on the inside and outside direction in face, thus its kinetic characteristics can not represent true heat-transfer pipe
Natural vibration characteristic.
Invention content
The purpose of the present invention is to provide a kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer and implementation methods, solve mesh
It is preceding when carrying out the mechanical test of bundle of steam generator, it is often intermediate only with tube bank since there are many bundle of steam generator
Several rows tested as test model, due to the reduction of tube bank, cause the heat-transfer pipe of partial model on the inside and outside direction in face
Rigidity reduce, thus its kinetic characteristics can not represent the natural vibration characteristic of true heat-transfer pipe, influence the standard of experiment
The problem of true property.
The present invention to achieve the above object, is realized using following technical scheme：
A kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer, including elastic support sheet, connection bolt and fixing nut, institute
It states elastic support sheet to be fixed on the connection bolt wherein end face of one end, fixing nut is socketed on connection bolt.Needle of the present invention
The feature weaker to the rigidity of the U-shaped bend loss of the partial model in heat-transfer pipe dynamic characteristic test, which has been invented, replaces overall stiffness
Elastic supporting member for supporting optical member.The connection bolt of this programme is fixed on by threaded hole on the chamber wall of steam generator, and connection bolt is solid
The one end for determining elastic support sheet is inserted into container and the end is flushed with container inner wall, and elastic support sheet is made to withstand on vibrationproof item,
By the nut that is tightened, entire support construction is set to be fixed on the chamber wall of steam generator, and elastic support sheet is made to provide
It is weaker with the rigidity of the elastic anchorage force of whole heating surface bank stiffnes s equivalent, the pipe U-shaped bend loss that solves the problems, such as to conduct heat, it is reasonable
The overall structure dynamic characteristic of simulation heat-transfer pipe provides condition.Connection bolt was both played a supporting role, and is also functioned to sealing and is made
With preventing the fluid inside container from leaking.Between elastic support sheet and vibrationproof item is just to contact, not pre- to connection bolt
Clamp force, it is easy to which the effect for providing rigidity support is not achieved in the loose or dislocation in vibration test, and fixing nut is right outside container
Connection one pretightning force of bolt application makes it closely be connect with chamber wall can be to avoid connection bolt because vibration cause to loosen.
Preferably, the elastic support sheet includes egative film and arc-like sheet, the egative film and the end face for connecting bolt
It is affixed, one end of arc-like sheet is fixed on wherein one end of egative film, and the free end of arc-like sheet extends to the other end of egative film.
Preferably, the arc-like sheet includes curved sections and planar section, and one end of curved sections and one end of egative film are neat
Flat to fix, the other end of curved sections and one end of planar section are fixed, and the other end of planar section is free end.
Preferably, the cross sectional shape of the curved sections is arc-shaped, and the center of circle of circle is located at bottom where the circular arc
In plane where piece.
Preferably, the distance of the fixing end of the planar section to egative film arrives egative film more than the free end of planar section
Distance.
Preferably, the planar section is contacted with egative film for line.
Preferably, the free end of the planar section flips up, and keeps the cross sectional shape of planar section L-shaped.
A method of using conducting heat, pipe U-shaped section of equivalent stiffness support construction realizes support, includes the following steps：
(a) one end for connecting bolt is screwed into corresponding screw hole on the chamber wall of steam generator, and makes elastic support sheet
It withstands on vibrationproof item；
(b) after installing connection bolt, it is ensured that the curved surface of curved sections is in face of fluid flow direction；
(c) fixing nut is screwed in from the other end of connection bolt, keeps connection bolt not rotate, passes through rotary fixing screw
Mother makes entire support construction fixation lock on the chamber wall of steam generator, and elastic support sheet is made to hold out against vibrationproof piece.
When will connect bolt on the chamber wall of steam generator, one end that bolt is contacted with elastic support sheet is connected
It flushes, cannot be protruded higher than chamber wall with container inner wall, the flow field in container cannot be interfered by connecting bolt in this way.
Compared with prior art, the present invention haing the following advantages and advantageous effect：The present invention is capable of providing the whole of heat-transfer pipe
Body rigidity, and do not interfere External airflow field, while the support has simple in structure, easy to process, reduces disturbance flow field to greatest extent,
Being applicable in can flexibly install at an arbitrary position, and range in stiffness adjustable range is wide, adjust the features such as being easy.
Description of the drawings
Fig. 1 is the stereogram of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the mounting structure schematic diagram of the present invention.
Fig. 4 is the location arrangements figure of elastic supporting member for supporting optical member in the experiment of certain Steam Generators in NPP heating surface bank Flow vibration.
Reference numeral is corresponding entitled in attached drawing：1, elastic support sheet, 2, connection bolt, 3, fixing nut, 4, egative film,
5, arc-like sheet, 6, curved sections, 7, planar section, 8, chamber wall, 9, vibrationproof item.
Specific implementation mode
The present invention is described in further detail with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1：
As shown in Figure 1, Figure 2, Figure 3 shows, pipe U-shaped section of equivalent stiffness support construction of a kind of heat transfer described in the present embodiment, including
Elastic support sheet 1, connection bolt 2 and fixing nut 3, the elastic support sheet 1 are fixed on the end face of connection bolt 2 wherein one end
On, fixing nut 3 is socketed on connection bolt 2.The support construction is simple, easy to process, and being applicable in flexibly can be at an arbitrary position
Installation.
Embodiment 2：
The present embodiment optimizes elastic support sheet 1 on the basis of the 1 of embodiment, i.e., elastic support sheet 1 includes bottom
Piece 4 and arc-like sheet 5, egative film 4 are affixed with the end face for connecting bolt 2, and one end of arc-like sheet 5 is fixed on wherein one end of egative film 4, arc
The free end of shape piece 5 extends to the other end of egative film 4.
Wherein, as shown in Figure 1 and Figure 2, arc-like sheet 5 includes curved sections 6 and planar section 7, one end and the egative film 4 of curved sections 6
One end flushes fixation, and one end of the other end and planar section 7 of curved sections 7 is fixed, and the other end of planar section 7 is free end.Curved surface
The cross sectional shape of section 6 is arc-shaped, and the center of circle of circle where the circular arc is located in the plane at 4 place of egative film.
The distance of the fixing end of planar section 7 to egative film 4 is more than the free end of planar section 7 to the distance of egative film 4.
The free end of the planar section 7 flips up, and keeps the cross sectional shape of planar section 7 L-shaped, L-shaped bending place and bottom
4 Linear smoother of piece contacts.Due to being a supporting point of resilient support at this, additional rigidity can be provided for entire support, because
This needs to reduce friction, needs smooth linear contact, thus designs L-shaped.Design l-shaped is equivalent to falling in structure processing
Angle, i.e. the contact position chamfering to planar section 7 and egative film will produce prodigious frictional force if not chamfering and provided to entire support
Additional rigidity.
As shown in figure 3, D represents vibrationproof item at a distance from container in figure, generally only several mm wides, the space of installation is compared
Narrow therefore designed elastic construction needs small.Above-mentioned requirements are met using the elastic support sheet of the structure.Heat-transfer pipe simultaneously
U-shaped section of support stiffness variation range it is bigger, such as this experiment range in stiffness from 4 × 106~21 × 106N/m,
It is difficult the resilient support for meeting this requirement, and using other blunt forms such as spiral using general spiral spring
Piece is mounted on position as shown in Figure 3, and it is often de- in structural member rear formation whirlpool that fluid flows through this irregular structure
It falls, causes to give heat-transfer pipe one additional excitation, influence the data of experiment, and use the elastic support sheet in the present embodiment,
Not only adjustable range is wide for rigidity, and will not interfere External airflow field.The stiffness tuning of elastic support sheet can by adjust а, β, δ,
R, the parameters such as L, H.Specifically, the calculation formula of stiffness coefficient is
Wherein, а indicates the corresponding radian of curved sections；β indicates the angle between planar section and egative film；δ indicates the thickness of egative film
Degree；R indicates the diameter length of curved sections；L indicates the length of egative film；H indicates the width of resilient support；E is the springform of material
Amount.
The example to stiffness tuning under some different parameters is given below, is the result of calculation of stainless steel material, calculates
The rigidity obtained afterwards is the rigidity of resilient support.
| α° | β° | δ(m) | L(m) | H(m) | R(m) | K(N/m) |
| 135 | 45 | 0.001 | 0.015 | 0.01 | 0.005 | 3.16E+06 |
| 116 | 26 | 0.002 | 0.018 | 0.0045 | 0.005 | 7.76E+06 |
| 116 | 26 | 0.002 | 0.018 | 0.005 | 0.005 | 8.63E+06 |
| 120 | 30 | 0.003 | 0.02 | 0.005 | 0.008 | 1.79E+07 |
As shown in figure 4,9 in the experiment of certain Steam Generators in NPP heating surface bank Flow vibration marked in figure
Pore vibrationproof location arrangements the type elastic supporting member for supporting optical member, range in stiffness are 3 × 106N/m~25 × 106N/m, the pipe of measurement
Beam entirety intrinsic frequency is in 16Hz~80Hz ranges.
Embodiment 3
As shown in figure 3, a kind of method that support is realized using pipe U-shaped section of equivalent stiffness support construction of conducting heat, including it is following
Step：
(a) one end for connecting bolt is screwed into corresponding screw hole on the chamber wall of steam generator, and makes elastic support sheet
It withstands on vibrationproof item 9；
(b) after installing connection bolt, it is ensured that the curved surface of curved sections is in face of fluid flow direction；
(c) fixing nut is screwed in from the other end of connection bolt, keeps connection bolt not rotate, passes through rotary fixing screw
Mother makes entire support construction fixation lock on the chamber wall of steam generator, and elastic support sheet is made to hold out against vibrationproof piece.
In step a, when will connect bolt on the chamber wall of steam generator, bolt and elastic support sheet are connected
One end of contact is flushed with container inner wall.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
According to the technical spirit of the present invention to any simple modification, equivalent variations made by above example, the protection of the present invention is each fallen within
Within the scope of.
Claims (8)
1. a kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer, it is characterised in that：Including elastic support sheet（1）, connection bolt
（2）And fixing nut（3）, the elastic support sheet（1）It is fixed on connection bolt（2）On the end face of one end, fixing nut（3）Set
It is connected on connection bolt（2）On；
The elastic support sheet（1）Including egative film（4）And arc-like sheet（5）, the egative film（4）With connect bolt（2）End face phase
Patch, arc-like sheet（5）One end be fixed on egative film（4）Wherein one end, arc-like sheet（5）Free end to egative film（4）The other end
Extend.
2. a kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer according to claim 1, it is characterised in that：The arc
Piece（5）Including curved sections（6）And planar section（7）, curved sections（6）One end and egative film（4）One end flush fixation, curved sections
（7）The other end and planar section（7）One end fix, planar section（7）The other end be free end.
3. a kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer according to claim 2, it is characterised in that：The curved surface
Section（6）Cross sectional shape be it is arc-shaped, and the circular arc where circle the center of circle be located at egative film（4）In the plane at place.
4. a kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer according to claim 2 or 3, it is characterised in that：It is described flat
Face section（7）Fixing end to egative film（4）Distance be more than planar section（7）Free end to egative film（4）Distance.
5. a kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer according to claim 4, it is characterised in that：The plane
Section（7）With egative film（4）It is contacted for line.
6. a kind of pipe U-shaped section of equivalent stiffness support construction of heat transfer according to claim 4, it is characterised in that：The plane
Section（7）Free end flip up, make planar section（7）Cross sectional shape it is L-shaped.
7. a kind of side for pipe U-shaped section of equivalent stiffness support construction realization support of being conducted heat using claim 1 ~ 6 any one of them
Method, it is characterised in that：Include the following steps：
（a）Bolt will be connected（2）One end be screwed into corresponding screw hole on the chamber wall of steam generator, and make elastic support sheet
（1）Withstand on vibrationproof item（9）On；
（b）Install connection bolt（2）Afterwards, it is ensured that curved sections（6）Curved surface in face of fluid flow direction；
（c）From connection bolt（2）The other end screw in fixing nut（3）, keep connection bolt（2）It does not rotate, it is solid by rotating
Determine nut（3）, so that entire support construction fixation is locked on the chamber wall of steam generator, and make elastic support sheet（1）It will prevent
The piece that shakes is held out against.
8. a kind of method that support is realized using pipe U-shaped section of equivalent stiffness support construction of conducting heat according to claim 7,
It is characterized in that：Bolt will be connected（2）When on the chamber wall of steam generator, bolt is connected（2）With elastic support sheet（1）
One end of contact is flushed with container inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610929860.2A CN106500939B (en) | 2016-10-31 | 2016-10-31 | A method of pipe U-shaped section of equivalent stiffness support construction of heat transfer and realization support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610929860.2A CN106500939B (en) | 2016-10-31 | 2016-10-31 | A method of pipe U-shaped section of equivalent stiffness support construction of heat transfer and realization support |
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| Publication Number | Publication Date |
|---|---|
| CN106500939A CN106500939A (en) | 2017-03-15 |
| CN106500939B true CN106500939B (en) | 2018-09-11 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3150142A1 (en) * | 1981-12-18 | 1983-07-07 | Türk & Hillinger GmbH & Co, 7200 Tuttlingen | Electric panel heating element |
| JPS61134595A (en) * | 1984-12-05 | 1986-06-21 | Mitsubishi Heavy Ind Ltd | Heat transfer pipe vibration-proof supporting device of heat exchanger |
| FR2709174B1 (en) * | 1993-08-20 | 1995-11-17 | Framatome Sa | Heat exchanger comprising means for holding anti-vibration bars inserted between the tubes of the heat exchanger bundle. |
| CN100523704C (en) * | 2004-11-22 | 2009-08-05 | 埃克森美孚研究工程公司 | Anti-vibration tube support |
| US9897234B2 (en) * | 2013-12-26 | 2018-02-20 | Nuscale Power, Llc | Steam generator tube support |
| CN204659177U (en) * | 2015-05-30 | 2015-09-23 | 胡保国 | A kind of thermal transfer printing printer |
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