CN203134394U - Pull bar device for upper horizontal support of steam generator at nuclear power station - Google Patents
Pull bar device for upper horizontal support of steam generator at nuclear power station Download PDFInfo
- Publication number
- CN203134394U CN203134394U CN2012207023087U CN201220702308U CN203134394U CN 203134394 U CN203134394 U CN 203134394U CN 2012207023087 U CN2012207023087 U CN 2012207023087U CN 201220702308 U CN201220702308 U CN 201220702308U CN 203134394 U CN203134394 U CN 203134394U
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- China
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- steam generator
- pull bar
- nuclear power
- power station
- pin
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- 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
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to the nuclear power technology, and specifically discloses a pull bar device for an upper horizontal support of a steam generator at a nuclear power station. The pull bar device comprises a pull bar, an upper centripetal joint bearing and an upper pin arranged on the upper end of the pull bar, and a lower centripetal joint bearing and a lower pin arranged on the lower end of the pull bar. The upper pin is installed on a connecting block, and the lower pin is installed on a pedestal. The pull bar device is adaptive to heat displacement when a vertical natural circulation steam generator at a PWR nuclear power station runs normally, restricts excessive heat displacement of the steam generator upon the occurrence of an accident, and provides effective support for the steam generator. Moreover, the pull bar device eliminates the gap between the upper horizontal support of the steam generator and the steam generator body, reduces the load on primary adapter of the steam generator upon the occurrence of an accident, and improves seismic performance of the steam generator.
Description
Technical field
The utility model belongs to the nuclear power technology field, is specifically related to a kind of stretching device with pull bar.
Background technology
In pressurized-water reactor nuclear power plant, adopt Vertical Natural Circulation Steam Generator usually, the type steam generator center of gravity is higher, is the but relatively poor equipment of anti-seismic performance in the system of entire reaction cooling in heap.Under accident conditions, how to guarantee the anti-seismic performance of steam generator, be related to the safety of nuclear power plant's (station).
For guaranteeing the anti-seismic performance of steam generator, Vertical Natural Circulation Steam Generator arranges vertical support and horizontal supporting structure usually.Steam generator upper level supporting structure in the past is for adapting to the displacement that thermal expansion produces under the normal operating condition of steam generator, there is the gap between supporting and the steam generator, there is adverse effect in the existence in gap to the anti-seismic performance of steam generator, brings more difficulty also for simultaneously installation and the adjustment of supporting.
Summary of the invention
The purpose of this utility model is to provide a kind of pull rod device for the supporting of nuclear power station steam generator upper level, and it can adapt to the displacement that thermal expansion produces under the normal operating condition of steam generator, eliminates the gap between supporting structure and the steam generator.
The realization the technical solution of the utility model is as follows:
A kind of pull rod device for the supporting of nuclear power station steam generator upper level, it comprises pull bar, the upper end of described pull bar is provided with plain radial bearing and upper pin, the lower end of described pull bar is provided with down plain radial bearing and lower bearing pin, described upper pin is installed on the contiguous block, and described lower bearing pin is installed on the base.
In above-mentioned a kind of pull rod device for the supporting of nuclear power station steam generator upper level, described base comprises the plate face that base plate is parallel with two, and the horizontal direction of plate face is provided with through hole, and lower bearing pin is positioned at through hole, passes the pull bar lower end simultaneously.
In above-mentioned a kind of pull rod device for the supporting of nuclear power station steam generator upper level, described contiguous block comprises two parallel plate faces, the plate face is provided with through hole, and upper pin passes the upper end of pull bar, and the two ends of upper pin lay respectively in two through holes on the plate face simultaneously.
In above-mentioned a kind of pull rod device for the supporting of nuclear power station steam generator upper level, be provided with the adjustment piece of annular in the through hole of described plate face, and the adjustment piece is sleeved on outside upper pin or the lower bearing pin.
In above-mentioned a kind of pull rod device for the supporting of nuclear power station steam generator upper level, described base fixedly is located on the secondary built-in fitting.
In above-mentioned a kind of pull rod device for the supporting of nuclear power station steam generator upper level, described secondary built-in fitting fixedly is located at the built-in fitting top one time.
The obtained beneficial effect of the utility model is as follows: this device can adapt to the thermal walking of pressurized-water reactor nuclear power plant Vertical Natural Circulation Steam Generator when normal operation, the over-large displacement of restriction steam generator under accident conditions, for steam generator provides effective supporting, simultaneously, can eliminate the gap between the supporting of steam generator upper level and the steam generator body, can reduce acting on the load (about 25%) that primary side of steam generator is taken under the accident conditions, improve the anti-seismic performance of steam generator.
Further, design two abundant firm bankings of built-in fitting, built-in fitting can tentatively be adjusted the position between secondary built-in fitting and the steam generator, adjusts piece and can regulate gap between bearing pin and the base, simultaneously, utilize baffle plate fixed pin shaft and plain radial bearing.
Description of drawings
Fig. 1 is a kind of pull rod device synoptic diagram for the supporting of nuclear power station steam generator upper level of the present invention;
Among the figure: 1. built-in fitting; 2. secondary built-in fitting; 3. base; 4. descend plain radial bearing; 5. lower bearing pin; 6. adjustment piece; 7. pull bar; 8. contiguous block; 9. plate face; 10. upper pin; 11. projection; 12. last plain radial bearing; 13. baffle plate.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
As shown in Figure 1, base 3 is installed on the secondary built-in fitting 2 and passes through bolt, base 3 comprises base plate, base plate and secondary built-in fitting 2 are bolted to connection, plate upper surface is processed with the projection 11 of rectangle, and protruding 11 centers are processed with grooving, makes projection 11 be divided into two, form two parallel plate faces 9, but the base plate of base 3 and the projection on the base plate 11 and 9 monoblock casts of plate face or forging.Horizontal direction at two boards face 9 is processed through hole, place pull bar 7 in the middle of the two boards face, the lower end of pull bar 7 also processes porose, and lower bearing pin 5 passes the hole of plate face and pull bar 7 lower ends, by in 7 times stomidiums of pull bar plain radial bearing 4 being installed down, so pull bar 7 can rotate around lower bearing pin 5.The external diameter of lower bearing pin 5 is less than the internal diameter of through hole during general the installation, so lower bearing pin 5 outer walls and through-hole wall have certain interval.In the middle of this enforcement, lower bearing pin 5 external diameters are 220mm, and the through hole internal diameter is 300mm.
In through hole, the two ends of lower bearing pin 5 cover loads onto the adjustment piece 6 of annular, can compensation equipment because the error that produces is installed.
Adopted and the same structure in pull bar 7 lower ends in the upper end of pull bar 7, pull bar 7 upper ends also process porose, and plain radial bearing 12 is installed in the hole.Upper pin 10 passes the hole of pull bar 7 upper ends.Pull bar 7 upper ends also are equipped with a contiguous block 8 identical with projection 11 structures on the base 3, also be processed with through hole on two plate faces 9 of contiguous block 8, the two ends of upper pin 10 lay respectively in two through holes on the plate face 9, in order to compensate assemblage gap, load onto the adjustment piece 6 of annular at upper pin 10 plate face through holes, upper pin overcoat.Contiguous block 8 can weld mutually with steam generator or similar devices, to realize being connected between pull rod device and the equipment.
In order to prevent that bearing pin from moving up and down in through hole, influence bearing accuracy, at the two ends of upper pin 10, lower bearing pin 5, the plate face outside all fixedly mounts baffle plate, alignment pin.
Secondary built-in fitting 2 is fixing by bolt and a built-in fitting 1 in the present embodiment.Built-in fitting is the connecting elements of base and civil engineering body of wall, and one time built-in fitting 1 was imbedded in the concrete in the civil engineering stage, is installed with the bolt of firm banking 3 usefulness in built-in fitting 1.Secondary built-in fitting 2 carries out concrete grouting after the steam generator installation in position, tentatively adjust the position between secondary built-in fitting 2 and the steam generator.
Pull rod device of the present utility model is horizontally disposed in the steam generator both sides, and all perpendicular to main pipe hot leg, pull rod device adopts bearing pin and oscillating bearing to be connected with steam generator and base.Pull rod device can adapt to steam generator along the displacement of main pipe hot leg direction by swing, but does not allow steam generator perpendicular to the displacement of trunk line direction.Because oscillating bearing is installed, pull rod device also can adapt to steam generator in the thermal expansion of vertical direction in addition.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.If these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (6)
1. one kind is used for the pull rod device that the nuclear power station steam generator upper level supports, it comprises pull bar (7), it is characterized in that: the upper end of described pull bar (7) is provided with plain radial bearing (12) and upper pin (10), the lower end of described pull bar (7) is provided with down plain radial bearing (4) and lower bearing pin (5), described upper pin (10) is installed on the contiguous block (8), and described lower bearing pin (5) is installed on the base (3).
2. a kind of pull rod device for nuclear power station steam generator upper level supporting as claimed in claim 1, it is characterized in that: described base (3) comprises the plate face (9) that base plate is parallel with two, the horizontal direction of plate face (9) is provided with through hole, lower bearing pin (5) is positioned at through hole, passes pull bar (7) lower end simultaneously.
3. a kind of pull rod device for nuclear power station steam generator upper level supporting as claimed in claim 1, it is characterized in that: described contiguous block (8) comprises two parallel plate faces (9), plate face (9) is provided with through hole, upper pin (10) passes the upper end of pull bar (7), and simultaneously the two ends of upper pin (10) lay respectively in the through hole on two plate faces (9).
4. as claim 2 or 3 described a kind of pull rod device for the supporting of nuclear power station steam generator upper level, it is characterized in that: be provided with the adjustment piece (6) of annular in the through hole of described plate face (9), and adjustment piece (6) is sleeved on outside upper pin (10) or the lower bearing pin (5).
5. as claim 1 or 2 or 3 described a kind of pull rod device for the supporting of nuclear power station steam generator upper level, it is characterized in that: described base (3) fixedly is located on the secondary built-in fitting (2).
6. a kind of pull rod device for nuclear power station steam generator upper level supporting as claimed in claim 5, it is characterized in that: described secondary built-in fitting (2) fixedly is located at above the built-in fitting (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207023087U CN203134394U (en) | 2012-12-18 | 2012-12-18 | Pull bar device for upper horizontal support of steam generator at nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207023087U CN203134394U (en) | 2012-12-18 | 2012-12-18 | Pull bar device for upper horizontal support of steam generator at nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203134394U true CN203134394U (en) | 2013-08-14 |
Family
ID=48942345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207023087U Expired - Lifetime CN203134394U (en) | 2012-12-18 | 2012-12-18 | Pull bar device for upper horizontal support of steam generator at nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203134394U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050160A (en) * | 2012-12-18 | 2013-04-17 | 中国核动力研究设计院 | Pull rod device for horizontal support at upper part of vapor generator in nuclear power station |
| CN110853784A (en) * | 2019-11-19 | 2020-02-28 | 中国核动力研究设计院 | Pressurized water reactor nuclear power plant stabiliser bearing structure |
-
2012
- 2012-12-18 CN CN2012207023087U patent/CN203134394U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050160A (en) * | 2012-12-18 | 2013-04-17 | 中国核动力研究设计院 | Pull rod device for horizontal support at upper part of vapor generator in nuclear power station |
| CN110853784A (en) * | 2019-11-19 | 2020-02-28 | 中国核动力研究设计院 | Pressurized water reactor nuclear power plant stabiliser bearing structure |
| CN110853784B (en) * | 2019-11-19 | 2022-07-29 | 中国核动力研究设计院 | Pressurized water reactor nuclear power plant stabiliser bearing structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
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| CX01 | Expiry of patent term |