CN106402132A - Special-shaped locking gasket for reactor core shell bearing ball cover plate of high temperature gas cooled reactor - Google Patents
Special-shaped locking gasket for reactor core shell bearing ball cover plate of high temperature gas cooled reactor Download PDFInfo
- Publication number
- CN106402132A CN106402132A CN201610387112.6A CN201610387112A CN106402132A CN 106402132 A CN106402132 A CN 106402132A CN 201610387112 A CN201610387112 A CN 201610387112A CN 106402132 A CN106402132 A CN 106402132A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- core shell
- htgr
- check washer
- upper cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011258 core-shell material Substances 0.000 title claims abstract description 35
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 239000010949 copper Substances 0.000 abstract description 4
- 230000002146 bilateral effect Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract 1
- 239000000306 component Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
- F16B39/108—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a locking washer under the nut or bolt head having at least one tongue or lug folded against the nut or bolt head, or against the object itself
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention belongs to the technical field of high temperature gas cooled reactors, and particularly relates to a special-shaped locking gasket for a reactor core shell bearing ball cover plate of a high temperature gas cooled reactor. According to the technical scheme, the gasket is effectively prevented from sliding through bilateral anti-rotation of the gasket, the friction coefficient of a contact surface of the gasket and an upper cover plate is increased, shear force in the circumferential direction of the gasket is reduced when bolts are screwed down, and the cracking danger at the root of an anti-rotation stopping piece is prevented. Meanwhile, the lower special-shaped sheet end of the special-shaped ring locking gasket can be turned up easily, so that construction difficulty is lowered. Moreover, after the lower special-shaped sheet end of the special-shaped ring locking gasket is turned up, parts of bolt heads can be wrapped, the bolt heads can be locked after being tightly knocked with a copper bar, and accordingly the locking function can be achieved.
Description
Technical field
The invention belongs to HTGR technical field is and in particular to HTGR heap core shell rotating bearing ball lid
Plate abnormity check washer.
Background technology
HTGR metal in-pile component reactor core shell rotating bearing ball is one of core component of heap core shell, if
Heap core shell rotating bearing ball cover plate bolt loosens, and rotating bearing ball will be unable to be operating normally in the runtime, to High Temperature Gas
The safe operation of cold dome causes inestimable impact.
According to pad designed at present, when constructing at the scene, run into problems with, when bolt is tightened, pad breaks
Split quantity more than half, constructional difficulties are it is impossible to effective clamping screw head.Existing design is on rotating bearing ball assembly
In cover plate M36 bolt rundown process, check washer is followed bolt and is rotated together, leads to pad anti-rotation catch root
Portion rupture, through analyze and investigate think rotating bearing ball cover plate working surface through Nitrizing Treatment, itself and locking
The case hardness higher (>=HRC50) of pad contact, leads to pad and upper cover plate contact surface coefficient of friction obvious
Less than pad and bolt head coefficient of friction, when causing bolt to be tightened, pad circumference shearing force is excessive.How to drop
Low difficulty of construction, when solving the problems, such as that bolt is tightened pad breakage problem and how effectively clamping screw head become
Support ball cover plate check washer design problem demanding prompt solution.
Not yet there is open source literature to disclose solution to the problems described above at present, therefore, need a kind of high temperature of development badly
HTGR heap core shell rotating bearing ball cover plate abnormity check washer, to improve the security of high temperature gas-cooled stack operation.
Content of the invention
The technical problem to be solved in the present invention is that a kind of HTGR heap core shell rotating bearing ball cover plate abnormity is locking
Pad, with pad breakage problem when solving that in existing design, bolt is tightened and cannot effectively clamping screw head ask
Topic, reduces difficulty of construction, improves efficiency of construction.
In order to realize this purpose, the present invention adopts the technical scheme that：
A kind of HTGR heap core shell rotating bearing ball cover plate abnormity check washer, is applied to HTGR
Metal in-pile component, rotating bearing ball assembly by upper cover plate, lower cover and is arranged in the middle of upper cover plate and lower cover
Two groups of cylindrical roller composition；In the upper-lower position of two groups of cylindrical roller, one group of tooth bar and ball are respectively set
It is fixedly connected, be meshed with the tooth bar being arranged on upper cover plate and lower cover both sides by above-mentioned tooth bar；
Upper cover plate is platy structure, and respectively there are 2 groups of tooth bars its both sides for being meshed with the tooth bar of cylindrical roller,
The groove of 4 φ 78 × 26mm is opened up on upper cover plate, opens up the circular hole of φ 39 × 69mm in groove,
The screwed hole of 4 M36 is arranged on heap core shell base plate, M36 fixing bolt will be upper by φ 39 × 69mm circular hole
Cover plate is fixed on heap core shell base plate；
Connecting between the head of M36 fixing bolt of heap core shell base plate and upper cover plate and the groove surface of upper cover plate
Setting check washer；
Check washer is symmetrical pyriform structure, and thickness is 1.5mm, including main part and bottom two
Point；Main part is external diameter is 75mm, and internal diameter is the annulus of 37mm, and outer arc length is 141.6mm；
The top of annulus is anti-rotation catch end, and the length at anti-rotation catch end is 27mm, opens in the centre at anti-rotation catch end
If the square openings of 8mm × 8mm；Bottom is radius is 25mm, the special-shaped bit end of arc length 71.5mm；
Anti- rotation catch is integral type structure with check washer, is divided into two pieces of left and right, is separately positioned on anti-rotation catch
Proper square aperture two ends；Every piece of anti-rotation catch is the platy structure of 8mm × 2.5mm × 1.5mm, its 8mm
The side of × 2.5mm respectively on the symmetrical left and right two parts of check washer, and perpendicular to check washer.
Further, a kind of HTGR heap core shell rotating bearing ball cover plate abnormity check washer as above,
It is applied to the metal in-pile component of HTGR, wherein：Rotating bearing ball assembly has 15 groups, and lower cover leads to
Cross M36 fixing bolt to be fixed in 15 supporting platforms in pressure vessel, upper cover plate fixes spiral shell by M36
Bolt is fixed on heap core shell base plate.
Further, a kind of HTGR heap core shell rotating bearing ball cover plate abnormity check washer as above,
It is applied to the metal in-pile component of HTGR, wherein：Upper cover plate is 440mm × 300mm × 95mm
Platy structure.
Further, a kind of HTGR heap core shell rotating bearing ball cover plate abnormity check washer as above,
It is applied to the metal in-pile component of HTGR, wherein：Check washer upper surface and the groove surface of upper cover plate
The head contact of contact, lower surface and above-mentioned M36 fixing bolt.
Further, a kind of HTGR heap core shell rotating bearing ball cover plate abnormity check washer as above,
It is applied to the metal in-pile component of HTGR, wherein：R20mm, arc length are passed through in the bottom of check washer
The circular arc of 10.9mm is smoothed with the annulus of main part and docks.
The having the beneficial effects that of technical solution of the present invention：
(1) in technical solution of the present invention, bilateral anti-rotation pad prevents the slip of pad effectively, increases
The coefficient of friction of pad and upper cover plate contact surface so that when bolt is tightened pad circumference shearing force reduce, prevent
Stop the risk of anti-rotation catch fracture of root.
(2) turn over easily in the bottom abnormity bit end of special-shaped ring check washer, reduce difficulty of construction, and under it
After turning in portion's abnormity bit end, bolt head is encased a part, bolt head can be locked after being struck tightly with copper rod,
Play locking effect.
Brief description
Fig. 1 is HTGR heap core shell rotating bearing ball cover plate abnormity check washer device side view；
Fig. 2 is HTGR heap core shell rotating bearing ball cover plate abnormity check washer device front view；
Fig. 3 is HTGR heap core shell rotating bearing ball cover plate abnormity check washer structure design schematic diagram.
In figure：1- anti-rotation catch, 2- check washer main part, 3- check washer bottom, 4-M36 fixes spiral shell
Bolt, 5- rotating bearing ball assembly upper cover plate, 6- square openings.
Specific embodiment
With specific embodiment, technical solution of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figures 1 to 3, a kind of HTGR of present invention heap core shell rotating bearing ball cover plate abnormity check washer,
It is applied to the metal in-pile component of HTGR, rotating bearing ball assembly by upper cover plate, lower cover and is arranged on
Two groups of cylindrical roller compositions in the middle of upper cover plate and lower cover；Each in the upper-lower position of two groups of cylindrical roller
Arrange one group of tooth bar to be fixedly connected with ball, by above-mentioned tooth bar be arranged on upper cover plate and lower cover both sides
Tooth bar is meshed；
Rotating bearing ball assembly has 15 groups, and lower cover is fixed on 15 in pressure vessel by M36 fixing bolt
In individual supporting platform, upper cover plate is fixed on heap core shell base plate by M36 fixing bolt.
Upper cover plate is the platy structure of 440mm × 300mm × 95mm, its both sides respectively have 2 groups of tooth bars for
The tooth bar of cylindrical roller is meshed, and opens up the groove of 4 φ 78 × 26mm, on upper cover plate in groove
Open up the circular hole of φ 39 × 69mm, the screwed hole of 4 M36 is arranged on heap core shell base plate, M36 fixes spiral shell
Bolt by φ 39 × 69mm circular hole, upper cover plate is fixed on heap core shell base plate；
Connecting between the head of M36 fixing bolt of heap core shell base plate and upper cover plate and the groove surface of upper cover plate
Setting check washer；Check washer upper surface is contacted with the groove surface of upper cover plate, lower surface and above-mentioned M36
The head contact of fixing bolt.
Check washer is symmetrical pyriform structure, and thickness is 1.5mm, including main part and bottom two
Point；Main part is external diameter is 75mm, and internal diameter is the annulus of 37mm, and outer arc length is 141.6mm；Annulus
Top be anti-rotation catch end, the length at anti-rotation catch end is 27mm, anti-rotation catch end centre open up 8mm
The square openings of × 8mm are as anti-trepanning；Bottom is radius is 25mm, the special-shaped bit end of arc length 71.5mm；
R20mm is passed through in the bottom of check washer, the circular arc of arc length 10.9mm is smoothed with the annulus of main part and docks.
Anti- rotation catch is integral type structure with check washer, is divided into two pieces of left and right, is separately positioned on anti-rotation catch
Proper square aperture two ends；Every piece of anti-rotation catch is the platy structure of 8mm × 2.5mm × 1.5mm, its 8mm
The side of × 2.5mm respectively on the symmetrical left and right two parts of check washer, and perpendicular to check washer.
The installation procedure of technical solution of the present invention is first abnormity pine pad to be placed in the groove of upper cover plate,
Anti- rotation catch inserts in the circular hole that then M36 fixing bolt inserts in anti-trepanning upper cover plate, is pulled with moment
Hand is tightened, and in rundown process, two anti-rotation catch prevent slip and the rotation of check washer, whole pad
Piece is non-rotary, after being tightened to moment values, will turn over, be covered in bolt head surface on the bottom of check washer,
Struck tightly with copper rod.
In supporting roller assembly upper cover plate M36 bolt rundown process, check washer follows bolt to existing design
Rotate together, lead to pad anti-rotation catch fracture of root, through analyzing and investigating the work thinking supporting roller cover plate
Make surface through Nitrizing Treatment, the case hardness that it contacts with check washer higher (>=HRC50), lead to pad
Piece and upper cover plate contact surface coefficient of friction are significantly less than pad and bolt head coefficient of friction, cause bolt to be tightened
When pad circumference shearing force excessive.For overcoming this problem, the present invention adopts bilateral anti-rotation catch, in anti-rotation
Hole both sides respectively process the anti-rotation catch of one side.
Existing design supporting roller assembly upper cover plate M36 bolt locking during, bag bolt on lock portion
Rostral face is only 5mm it is impossible to clamping screw effectively, and increased difficulty of construction.The present invention is using abnormity
Bolt head is encased a part after turning on the bottom of check washer by ring structure pad, then strikes tightly with copper rod,
Such that it is able to clamping screw effectively.
Claims (5)
1. a kind of HTGR heap core shell rotating bearing ball cover plate abnormity check washer, is applied to HTGR
Metal in-pile component it is characterised in that：
Rotating bearing ball assembly by upper cover plate, lower cover and is arranged on two groups of cylinders in the middle of upper cover plate and lower cover
Shape ball forms；Respectively arrange one group of tooth bar in the upper-lower position of two groups of cylindrical roller to be fixedly connected with ball,
It is meshed with the tooth bar being arranged on upper cover plate and lower cover both sides by above-mentioned tooth bar；
Upper cover plate is platy structure, and respectively there are 2 groups of tooth bars its both sides for being meshed with the tooth bar of cylindrical roller,
The groove of 4 φ 78 × 26mm is opened up on upper cover plate, opens up the circular hole of φ 39 × 69mm in groove,
The screwed hole of 4 M36 is arranged on heap core shell base plate, M36 fixing bolt will be upper by φ 39 × 69mm circular hole
Cover plate is fixed on heap core shell base plate；
Connecting between the head of M36 fixing bolt of heap core shell base plate and upper cover plate and the groove surface of upper cover plate
Setting check washer；
Check washer is symmetrical pyriform structure, and thickness is 1.5mm, including main part and bottom two
Point；Main part is external diameter is 75mm, and internal diameter is the annulus of 37mm, and outer arc length is 141.6mm；
The top of annulus is anti-rotation catch end, and the length at anti-rotation catch end is 27mm, opens in the centre at anti-rotation catch end
If the square openings of 8mm × 8mm；Bottom is radius is 25mm, the special-shaped bit end of arc length 71.5mm；
Anti- rotation catch is integral type structure with check washer, is divided into two pieces of left and right, is separately positioned on anti-rotation catch
Proper square aperture two ends；Every piece of anti-rotation catch is the platy structure of 8mm × 2.5mm × 1.5mm, its 8mm
The side of × 2.5mm respectively on the symmetrical left and right two parts of check washer, and perpendicular to check washer.
2. the locking pad of a kind of HTGR heap core shell rotating bearing ball cover plate abnormity as claimed in claim 1
Piece, be applied to the metal in-pile component of HTGR it is characterised in that：Rotating bearing ball assembly has 15 groups,
Lower cover is fixed in 15 supporting platforms in pressure vessel by M36 fixing bolt, and upper cover plate passes through M36
Fixing bolt is fixed on heap core shell base plate.
3. a kind of HTGR heap core shell rotating bearing ball cover plate abnormity check washer as claimed in claim 2,
Be applied to the metal in-pile component of HTGR it is characterised in that：Upper cover plate is 440mm × 300mm × 95mm
Platy structure.
4. a kind of HTGR heap core shell rotating bearing ball cover plate abnormity check washer as claimed in claim 3,
Be applied to the metal in-pile component of HTGR it is characterised in that：Check washer upper surface and upper cover plate
Groove surface contacts, the head contact of lower surface and above-mentioned M36 fixing bolt.
5. a kind of HTGR heap core shell rotating bearing ball cover plate abnormity check washer as claimed in claim 4,
Be applied to the metal in-pile component of HTGR it is characterised in that：The bottom of check washer pass through R20mm,
The circular arc of arc length 10.9mm is smoothed with the annulus of main part and docks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387112.6A CN106402132B (en) | 2016-06-02 | 2016-06-02 | A kind of high temperature gas cooled reactor heap core shell rotating bearing ball cover board abnormity locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387112.6A CN106402132B (en) | 2016-06-02 | 2016-06-02 | A kind of high temperature gas cooled reactor heap core shell rotating bearing ball cover board abnormity locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402132A true CN106402132A (en) | 2017-02-15 |
| CN106402132B CN106402132B (en) | 2018-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610387112.6A Active CN106402132B (en) | 2016-06-02 | 2016-06-02 | A kind of high temperature gas cooled reactor heap core shell rotating bearing ball cover board abnormity locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402132B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167457A (en) * | 2018-02-12 | 2018-06-15 | 无锡智能自控工程股份有限公司 | Three eccentricity sealed butterfly valve trim ring screw check structure |
| CN110552951A (en) * | 2018-05-30 | 2019-12-10 | 李瑛� | Novel screw anti-loosening method and novel anti-loosening screw |
| CN113819338A (en) * | 2021-10-14 | 2021-12-21 | 安徽恒生科技发展集团有限公司 | Bolt installation positioning anti-rotation structure special-shaped gasket for pipeline repair device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4711760A (en) * | 1986-02-27 | 1987-12-08 | Westinghouse Electric Corp. | Nuclear reactor incorporating locking device for threaded bolt connections |
| CN203130744U (en) * | 2013-01-08 | 2013-08-14 | 上海核工程研究设计院 | Loosening prevention fastening piece for nuclear power equipment connection |
| CN103879887A (en) * | 2014-03-27 | 2014-06-25 | 清华大学 | Centering device for hoisting shell of reactor core of high-temperature gas cooled reactor |
| CN105422582A (en) * | 2015-12-16 | 2016-03-23 | 同济大学 | Whole overturning single-edge bolt fastening piece |
| CN206175447U (en) * | 2016-06-02 | 2017-05-17 | 华能山东石岛湾核电有限公司 | High temperature gas cooled piles special -shaped check washer of reactor core shell supporting ball apron |
-
2016
- 2016-06-02 CN CN201610387112.6A patent/CN106402132B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4711760A (en) * | 1986-02-27 | 1987-12-08 | Westinghouse Electric Corp. | Nuclear reactor incorporating locking device for threaded bolt connections |
| CN203130744U (en) * | 2013-01-08 | 2013-08-14 | 上海核工程研究设计院 | Loosening prevention fastening piece for nuclear power equipment connection |
| CN103879887A (en) * | 2014-03-27 | 2014-06-25 | 清华大学 | Centering device for hoisting shell of reactor core of high-temperature gas cooled reactor |
| CN105422582A (en) * | 2015-12-16 | 2016-03-23 | 同济大学 | Whole overturning single-edge bolt fastening piece |
| CN206175447U (en) * | 2016-06-02 | 2017-05-17 | 华能山东石岛湾核电有限公司 | High temperature gas cooled piles special -shaped check washer of reactor core shell supporting ball apron |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167457A (en) * | 2018-02-12 | 2018-06-15 | 无锡智能自控工程股份有限公司 | Three eccentricity sealed butterfly valve trim ring screw check structure |
| CN110552951A (en) * | 2018-05-30 | 2019-12-10 | 李瑛� | Novel screw anti-loosening method and novel anti-loosening screw |
| CN113819338A (en) * | 2021-10-14 | 2021-12-21 | 安徽恒生科技发展集团有限公司 | Bolt installation positioning anti-rotation structure special-shaped gasket for pipeline repair device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106402132B (en) | 2018-10-23 |
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