CN106884868A - Anti- Transient deformation layer-stepping water lubrication thrust bearing shoe valve - Google Patents
Anti- Transient deformation layer-stepping water lubrication thrust bearing shoe valve Download PDFInfo
- Publication number
- CN106884868A CN106884868A CN201710158288.9A CN201710158288A CN106884868A CN 106884868 A CN106884868 A CN 106884868A CN 201710158288 A CN201710158288 A CN 201710158288A CN 106884868 A CN106884868 A CN 106884868A
- Authority
- CN
- China
- Prior art keywords
- baffle
- thrust bearing
- tiling
- stainless steel
- bearing shoe
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000005461 lubrication Methods 0.000 title claims abstract description 20
- 230000001052 transient effect Effects 0.000 title abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 42
- 239000010935 stainless steel Substances 0.000 claims description 42
- 239000012535 impurity Substances 0.000 abstract description 2
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000007704 transition Effects 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/16—Sliding surface consisting mainly of graphite
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention relates to a kind of anti-transient state layer-stepping water lubrication thrust bearing shoe valve, it is made up of tiling, base steel, insulation surface, the part of baffle plate four.Work tiling undertakes the bearing function of moisture film, with preferable self-lubricating function；Base steel undertakes and transmitter for the main of load, and insulation surface has compared with low heat conduction coefficient, when core main pump occurs hot transient state, suppresses axially to produce larger thermograde, and then control the improper deformation of tiling；Thrust bearing shoe valve face diameter reduces thrust bearing shoe valve because of tiling peeling caused by impact, improves reliability to gap, circumferential gapless is deposited, and work tiling is convenient with insulation surface to be replaced；Water lubrication thrust bearing shoe valve, with moist cunning, high temperature resistant, antiwear characteristic, has preferable chemical stability and relatively low impurity infiltration release rate in water, can be widely applied to three generations's nuclear power main pump and water conservancy and hydropower or steamer drives field.
Description
Technical field
The present invention relates to a kind of anti-Transient deformation layer-stepping water lubrication thrust bearing shoe valve.
Background technology
Three generations's nuclear power presurized water reactor has security feature higher, and core main pump is the pressure boundary of primary Ioops, and core main pump is general
It is divided into shield electric machine formula core main pump and wet-wound group electric motor type core main pump, two nucleoid main pumps are carried axially by water lubricating thrust bearing
Hydraulic thrust；Especially require that start and stop are not less than 3000 times without in the state of high-pressure medium jack-up, have higher to the hot transient state of thrust bearing shoe valve
It is required that.
Traditional water lubrication thrust tile-base surface material generally uses the fragile materials such as graphite, carborundum, and structure is rebuilding,
Upper strata is thrust tile-base surface, the stainless steel tile base of lower floor；When this kind of structure occurs hot transient state, the concave change shape of tiling can be obvious,
It is inhibited to being effectively formed for moisture film.Insulating layer structure is set up by the back side, by reliably fastener conjunction so that
Insulating layer material can be replaced with tiling by the cycle, reduce maintenance difficulties and expense.
The content of the invention
It is an object of the invention to provide the anti-wink that thrust tile-base surface during a kind of suppression hot transient state deforms excessive, effective moisture film reduction
State deforms layer-stepping water lubrication thrust bearing shoe valve.The technical scheme is that：Anti- Transient deformation layer-stepping water lubrication thrust bearing shoe valve, thrust
Tiling (1) installs stainless steel tile base (2) upside, and insulation surface (3) connects stainless steel tile base (2) downside, stainless steel tile base (2) right side
The first limited impression (11) is provided with, stainless steel base steel (2) left side is provided with the second limited impression (5), and stainless steel tile base (2) is left
Upper lateral part is provided with the 3rd limited impression (16), and stainless steel tile base (2) right upper portion is provided with the 4th limited impression (17), stainless steel watt
Base (2) lower floor sets support nahlock (4)；The outer circular direction of thrust tiling (1) is set in the first limited step (9), thrust tiling (1)
Circular direction sets the second limited step (10), and thrust tiling (1) left side sets first baffle (8), and thrust tiling (1) right side is set
Second baffle (7).
The stainless steel tile base of thrust tiling (1) of the present invention (2) upside, insulation surface (3) positioned at stainless steel tile base (2) downside, when
When thrust bearing water temperature rises rapidly, about 30K will be risen in 2 minutes, there is depositing for thrust tiling (1) and insulation surface (3), stainless steel
All deposit larger thermal resistance above and below Wa Ji (2), when there is hot transient state, stainless steel tile base (2) will not axially on deposit larger
Thermograde, and then when reducing hot transient state, the concave change shape of thrust tiling (1).Thrust tiling (1) concave change shape is generally 0.02-
Water film thickness under 0.04mm, and usual working condition is close, is deposited because upper and lower faces of the invention are nonmetallic, can be with
Concave change shape when ensureing transient state is down within 0.01mm so that do not constitute serious harm to playing fluid lubrication water film thickness.First
When limited impression (11) can ensure that stainless steel tile base (2) is moved axially, without departing from given area, general this scope is
0 to 2mm, if shaft orientation moving range is excessive, when thrust disc is contacted with thrust bearing shoe valve, can produce larger shock loading, cause crisp
Property thrust bearing shoe valve occur peel off even be broken, influence water lubricating thrust bearing safety.First limited step (9) can control thrust
Tiling (1) does not slide from outer circular direction, and the second limited step (10) can control thrust tiling (1) not slid from interior circular direction,
First baffle (8) can control thrust tiling (1) not slid from left direction, and second baffle (7) can control thrust tiling (1)
Do not slid from right direction.First limited step (9) deposits small gap, generally no greater than 0.5mm with thrust tiling (1)；Second
Limited step (10) also deposits small gap with thrust tiling (1), and strain is not more than 0.3mm；First baffle (8) and thrust tiling
(1) small―gap suture, generally no greater than 0.05mm are deposited；Second baffle (7) deposits small―gap suture with thrust tiling (1), generally no greater than
0.05mm。
First hexagon socket head cap screw (12) is contacted with the first lock washer (12) centering, first baffle (8) and stainless steel tile base
(2) gapless is contacted, strict to control the first hexagon socket head cap screw (12) locking torque, material is when the first hexagon socket head cap screw (12)
During A2-70, the corresponding locking torques of M6 are 8.1NM, and the corresponding locking torques of M8 are 18NM, hexagonal in locking torque too small first
Bolt (12) long-play can loosen, if locking torque is excessive, it will cause the first hexagon socket head cap screw (12) screw thread to occur
There is locked or bolt and be broken in deformation, stainless steel screw thread pair.
Second hexagon socket head cap screw (14) is contacted with the second lock washer (15) centering, second baffle (7) and stainless steel tile base
(2) gapless, strict control the second hexagon socket head cap screw (14) locking torque, when the second hexagon socket head cap screw (14) material is A- are contacted
When 70, the corresponding locking torques of M6 are 7.1NM, and M8 correspondence locking torques are 18NM, too small second hexagon socket head cap screw of locking torque
(14) long-play can loosen, if locking torque is excessive, it will cause the second hexagon socket head cap screw (14) screw thread to deform,
There is locked or bolt and be broken in stainless steel screw thread pair.
3rd hexagon socket head cap screw (19) is contacted with the 3rd lock washer (20) centering, locking clamping block (18) and stainless steel tile base
(2) gapless, locking clamping block (18) can carry out good axial limiting to insulation surface (3), but to ensure insulation surface (3) with it is stainless
Small gap, the general 0.1mm to 0.2mm of gap width are deposited between steel tile base (2), it can be ensured that the water suction after insulation surface (3) water suction
Situations such as expansion, also thermal expansion and stainless steel tile base (2) deform steady operation.3rd limited step (37) can control heat-insulated
Face (3) does not slide from stainless steel tile base (2) back side left side, and the 4th limited step (36) can control insulation surface (3) not from stainless
The sliding of steel tile base (2) back side right side.
5th limited step (23) may insure not fallen out when work tiling (1) is projecting, the 5th limited step (23) with
The axial gap of work tiling (1) is generally no greater than 0.1mm, and axial gap is too small to be unfavorable for assembling, and axial gap is crossed conference and made
It is excessive into shock loading.First boss (21) gos deep into stainless steel tile base (2) side, first boss (21) and stainless steel tile base (2)
Contacts side surfaces gapless.5th limited impression (24) is a small round recessed, it is ensured that not with thrust tiling (1) side plate point
Edge comes in contact stress.
The second counterbore (26) set on second baffle (7), can cause that a conjunction bolt nut is flat less than second baffle (7)
Face, reduces the obstruction to current between two thrust bearing shoe valves, and reduce loss improves stability.In first rounded corner (27) can be provided
Side is reduced and current is hindered to the rounding off of flowing water, and the second rounded corner (28) can provide the round and smooth of lateral direction flowing water
Transition, reduces and current is hindered.
Insulation surface (3) is sector, and the first rectangular opening (34) concedes space, the 6th rectangular opening for thrust bearing shoe valve axial limit structure
For thrust bearing shoe valve radial direction position limiting structure concedes space, the second rectangular opening (30), the 3rd rectangular opening (31), the 4th rectangular opening (29) and
Five rectangular openings (32) concede space for locking clamping block (18), and insulation surface (3) is with effect of heat insulation composite, heat-resistant anti-fatigue punching
Hit.
When water temperature lifted 20 degrees Celsius in 90 seconds, stainless steel tile base (2) only arranges thrust tiling (1), is pushed away through analysis
Power tiling (1) will occur concave change shape 0.03mm, and water film thickness when having exceeded normal operation destroys the elastohydrodynamic lubrication shape of aqueous medium
State so that friction pair occurs dry friction；When insulation surface (3) is installed in stainless steel tile base (2) bottom, will cause that concave change shape is down to
Below 0.01mm, will not be to moisture film impurity considerable influence, and thrust tile-base surface deforms excessive, effective moisture film when reaching suppression hot transient state
The purpose of reduction.
Brief description of the drawings
Fig. 1 anti-Transient deformation layer-stepping water lubrication thrust bearing shoe valve structure charts of the invention
Fig. 2 is the A direction views of Fig. 1
Fig. 3 is the C direction views of Fig. 2
Fig. 4 is the D direction views of Fig. 2
Fig. 5 is the B direction views of Fig. 1
Fig. 6 is the side view of sequence 8 in Fig. 2
Fig. 7 is the side view of sequence 7 in Fig. 2
Fig. 8 is the top view of sequence 3 of Fig. 5
Specific embodiment：
Fig. 1 is anti-Transient deformation layer-stepping water lubrication thrust tile structure, and the pad surface shape of thrust tiling 1 is sector, thrust bearing shoe valve
The material of face 1 is graphite tile or fibre reinforced composite tile, and the upper surface of thrust tiling 1 is the stepped structure of cylinder or approximate cylinder
Make, the right side of stainless steel tile base 2 is provided with the first limited impression 11, the left side of stainless steel base steel 2 is provided with the second limited impression 5, no
The rust left upper portion of steel tile base 2 is provided with the 3rd limited impression 16, and the right upper portion of stainless steel tile base 2 is provided with the 4th limited impression 17, no
Rust steel tile base 2 lower floor sets support nahlock 4, and the gap of 0.05mm-0.10mm is deposited between insulation surface 3 and stainless steel tile base 2, can be with
Preferably control concave change shape during hot transient state, it is to avoid during hot transient state, larger thermograde axially occurs, so as to avoid thrust
There is the concave change shape more than 0.01mm in tiling 1, destroy the hydrodynamic lubrication of water.
As shown in Fig. 2 the outer circular direction of thrust tiling 1 sets the first limited step 9, circular direction sets the in thrust tiling 1
Two limited steps 10, the left side of thrust tiling 1 sets first baffle 8, and the right side of thrust tiling 1 sets second baffle 7, can control to push away
The radial direction of power tiling 1 allows to slide by a small margin, and circumferential direction does not slide.
As shown in figure 3, the contact of the first hexagon socket head cap screw 12 and the first lock washer 13 is connected, the first lock washer 13 and the
One baffle plate 8 is contacted, and first baffle 8 is connected with stainless steel tile base 2, it is ensured that first baffle 8 and the gapless of stainless steel tile base 2.
As shown in figure 4, the contact of the second hexagon socket head cap screw 14 and the second lock washer 15 is connected, the second lock washer 15 and the
Two plate washers 7 are contacted, and the first plate washer 7 is connected with stainless steel tile base 2, it is ensured that second baffle 7 and the gapless of stainless steel tile base 2.
As shown in figure 5, the 3rd hexagon socket head cap screw 19 is connected with the contact of the 3rd lock washer 20, the 3rd lock washer 20 is contacted
Locking clamping block 18, locking clamping block 18 installs the upside of insulation surface 3, the 3rd limited step 37 and the left contact of insulation surface 3, and the 4th is spacing
Step 36 and the right contact of insulation surface 3, insulation surface 3 deposit the gap of 0.05mm-0.10mm with stainless steel tile base 2.
As shown in fig. 6, the upside of 23 first baffle of the 5th limited step 8, the 5th limited step 23 and first baffle platform 25
Connection, the 5th limited step 23 is higher by first baffle platform 25, and the 5th limited impression 24, first baffle 8 are set on first baffle 8
Upper setting first boss 21, first boss 21 sets the first counterbore 22, and the 5th limited impression 24 is a small round recessed, can be with
Guarantee does not come in contact stress with the side plate cusp edge of thrust tiling 1.
As shown in fig. 7, the left side of second baffle 7 sets the first rounded corner 27, the right side of second baffle 7 sets the first rounded corner
28, the outside of second baffle 7 sets the second counterbore 26, and the first rounded corner 27 can provide the rounding off of inner side direction flowing water, subtract
Few that current are hindered, the second rounded corner 28 can provide the rounding off of lateral direction flowing water, reduce and current are hindered.
As shown in figure 8, the first rectangular opening 34 is located at the top of insulation surface 3, the second rectangular opening 30 is located at the upper left quarter of insulation surface 3
Point, the 3rd rectangular opening 31 is located at the upper right portion of insulation surface 3, and the 4th rectangular opening 29 is located at the bottom left section of insulation surface 3, the 5th rectangular opening
32 are located at the lower right-most portion of insulation surface 3, and elliptical aperture 35 is located at the center section of insulation surface 3, and the 6th rectangular opening 33 is located under insulation surface 3
Portion.
Claims (7)
1. a kind of anti-Transient deformation layer-stepping water lubrication thrust bearing shoe valve, it is characterized in that：Thrust tiling (1) installs stainless steel tile base (2)
Upside, insulation surface (3) connects stainless steel tile base (2) downside, and stainless steel tile base (2) right side is provided with the first limited impression (11),
Stainless steel base steel (2) left side is provided with the second limited impression (5), and stainless steel tile base (2) left upper portion is provided with the 3rd limited impression
(16), stainless steel tile base (2) right upper portion is provided with the 4th limited impression (17), and stainless steel tile base (2) lower floor sets support nahlock
(4)；The outer circular direction of thrust tiling (1) sets the first limited step (9), and the interior circular direction of thrust tiling (1) sets the second limiting stand
Rank (10), thrust tiling (1) left side sets first baffle (8), and thrust tiling (1) right side sets second baffle (7).
2. a kind of anti-Transient deformation layer-stepping water lubrication thrust bearing shoe valve according to claim 1, it is characterized in that：First lock pad
Piece (13) is contacted with first baffle (8), and first baffle (8) is connected with stainless steel tile base (2).
3. a kind of anti-Transient deformation layer-stepping water lubrication thrust bearing shoe valve according to claim 1, it is characterized in that：Second lock pad
Piece (15) is contacted with second baffle (7), and first baffle (7) is connected with stainless steel tile base (2).
4. a kind of anti-Transient deformation layer-stepping water lubrication thrust bearing shoe valve according to claim 1, it is characterized in that：3rd limiting stand
Rank (37) and insulation surface (3) left contact, the 4th limited step (36) and insulation surface (3) right contact.
5. a kind of anti-Transient deformation layer-stepping water lubrication thrust bearing shoe valve according to claim 1, it is characterized in that：5th limiting stand
Rank (23) is connected positioned at first baffle (8) upside, the 5th limited step (23) with first baffle platform (25), the 5th limited step
(23) first baffle platform (25) is higher by, the 5th limited impression (24) is set on first baffle (8), set on first baffle (8)
First boss (21), first boss (21) sets the first counterbore (22).
6. a kind of anti-Transient deformation layer-stepping water lubrication thrust bearing shoe valve according to claim 1, it is characterized in that：Second baffle
(7) left side sets the first rounded corner (27), and second baffle (7) right side sets the second rounded corner (28), and second baffle (7) outside sets
Put the second counterbore (26).
7. a kind of anti-Transient deformation according to claim 1 is layered water lubrication thrust bearing shoe valve, it is characterized in that：First rectangular opening
(34) positioned at insulation surface (3) top, the second rectangular opening (30) is located at positioned at insulation surface (3) upper left, the 3rd rectangular opening (31)
Insulation surface (3) upper right portion, positioned at insulation surface (3) bottom left section, the 5th rectangular opening (32) is positioned at heat-insulated for the 4th rectangular opening (29)
Face (3) lower right-most portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710158288.9A CN106884868A (en) | 2017-03-17 | 2017-03-17 | Anti- Transient deformation layer-stepping water lubrication thrust bearing shoe valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710158288.9A CN106884868A (en) | 2017-03-17 | 2017-03-17 | Anti- Transient deformation layer-stepping water lubrication thrust bearing shoe valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106884868A true CN106884868A (en) | 2017-06-23 |
Family
ID=59181785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710158288.9A Pending CN106884868A (en) | 2017-03-17 | 2017-03-17 | Anti- Transient deformation layer-stepping water lubrication thrust bearing shoe valve |
Country Status (1)
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| CN (1) | CN106884868A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506333A (en) * | 2018-04-08 | 2018-09-07 | 清华大学 | Heat resistanceheat resistant Transient deformation folded-edge water lubrication thrust bearing shoe valve |
| CN112576611A (en) * | 2020-12-17 | 2021-03-30 | 哈尔滨电气动力装备有限公司 | Water lubrication thrust tile lateral elastic baffle limiting structure |
| CN114382776A (en) * | 2021-12-17 | 2022-04-22 | 哈尔滨电气动力装备有限公司 | Nuclear main pump thrust tile static water layer heat insulation structure |
| CN114412916A (en) * | 2022-02-09 | 2022-04-29 | 哈尔滨电气动力装备有限公司 | Structure for preventing tile from separating from tile base |
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| WO2017029969A1 (en) * | 2015-08-19 | 2017-02-23 | 大同メタル工業株式会社 | Vertical bearing device |
| CN206655907U (en) * | 2017-03-17 | 2017-11-21 | 哈尔滨电气动力装备有限公司 | Anti- Transient deformation layer-stepping water lubrication thrust bearing shoe valve |
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| US4358168A (en) * | 1980-12-08 | 1982-11-09 | Chore-Time Equipment, Inc. | Thrust bearing |
| JPH0497449U (en) * | 1991-01-21 | 1992-08-24 | ||
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| CN205190527U (en) * | 2015-12-09 | 2016-04-27 | 武汉船舶职业技术学院 | Damping type water lubrication thrust bearing made of baked clay that can incline |
| CN206655907U (en) * | 2017-03-17 | 2017-11-21 | 哈尔滨电气动力装备有限公司 | Anti- Transient deformation layer-stepping water lubrication thrust bearing shoe valve |
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Application publication date: 20170623 |