CN104332192B - A kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly - Google Patents
A kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly Download PDFInfo
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- CN104332192B CN104332192B CN201410454446.1A CN201410454446A CN104332192B CN 104332192 B CN104332192 B CN 104332192B CN 201410454446 A CN201410454446 A CN 201410454446A CN 104332192 B CN104332192 B CN 104332192B
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- welding
- square
- titanium alloy
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- 238000001816 cooling Methods 0.000 title claims abstract description 62
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 49
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910001928 zirconium oxide Inorganic materials 0.000 title claims abstract description 13
- 239000011229 interlayer Substances 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 79
- 238000003466 welding Methods 0.000 claims description 78
- 210000003371 toe Anatomy 0.000 claims description 35
- 239000000919 ceramic Substances 0.000 claims description 30
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 25
- 230000029142 excretion Effects 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 24
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 11
- 239000000395 magnesium oxide Substances 0.000 claims description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 11
- 239000004927 clay Substances 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 210000002683 foot Anatomy 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000006872 improvement Effects 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 description 11
- 239000000498 cooling water Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 210000001215 vagina Anatomy 0.000 description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- 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
- Y02E30/30—Nuclear fission reactors
Abstract
The present invention relates to a kind of nuclear reactor cooling equipment, a kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly, nuclear reactor interlayer body runners is positioned at lower semisphere bottom inner chamber, support foot rest is had to be placed on reactor Di Chi baseplane on lower semisphere bottom bottom outer surface, there is clip to seal fixed pressure above lower semisphere bottom and cool down cylinder, force have clip to seal fixed episphere top cover above cooling cylinder, episphere top cover top is outside upper packing seal hole, airtight fixed pilot pipe cylindrical in packing seal hole on nuclear reactor interlayer body top, as improvement: force there is spiral deflector on cooling cylinder cylinder medial wall, spiral deflector inward flange and nuclear reactor interlayer outer rim matched in clearance；It is circumscribed with the plumb joint outlet that pressure duct is connected on plumb joint exchanger on lower semisphere bottom, episphere top cover is circumscribed with back pressure pipeline and leads to the plumb joint back pressure mouth on plumb joint exchanger.
Description
Technical field
The present invention relates to a kind of pressure cooling device for removing decay heat from nuclear reactor, International Classification of Patents is
G21C15/18, is specifically related to a kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly.
Background technology
There is various ways for producing the structure of the nuclear reactor of electric energy, for coolant endless form, substantially can divide
For coolant forced circulation and the reactor of Natural Circulation.It will be appreciated that its coolant of the reactor of forced circulation, it is usually
Water, is circulated through its reactor core that nuclear reaction occurs, takes away heat from this reactor core, flowed to outside reactor vessel by pipeline
Portion, is discharged into heat in special heat exchanger, draws back reactor core with water pump the most again.Known so-called " centralized " reactor
Exterior line, heat exchanger is not had to set in being located in the container of reactor core.But, such reactor still includes circulating pump,
For carrying coolant with the pressure of less handkerchief to reactor core and exchanger.One major defect of coolant forced circulation reactor
Being the cooling line needing to arrange complexity in container, so setting is primarily to cold to transport pump at the delivery outlet of exchanger
But agent, is transported to reactor core the most again.Other weak point is, inside setting the most complicated cooling line needs the reaction of major diameter
Heap, therefore needs to be reduced the volume of reactor by coolant high-speed circulating.For simplifying cooling line, known scheme is,
Nuclear reactor internal relies solely on coolant Natural Circulation and realizes.
The open a kind of complete Passive containment cooling system of Large Copacity of Chinese patent CN102081976A.This containment is cold
But system may utilize the thermal parameter that sensor collection containment is relevant, follows the tracks of cooling procedure, is provided above at containment multiple
In order to store the hutch of different coolant, realized containment by the selection of coolant kind and the regulation of coolant flow
The dynamic control of cooling power；By using general passive control unit, the startup of this containment cooling system and whole fortune
Row process can be completely independent of external impetus supply, therefore has passive characteristic completely.This invention employs multiple low
Boiling point coolant, makes system become complicated, and adds construction and maintenance cost.
The harm that any glitch of nuclear facilities is brought is huge, and maintenance cost is high, therefore, enters reactor
The safe and efficient cooling of row is significant.
Summary of the invention
Present invention aims to top water tank cooling water use efficiency present in prior art the highest, pcs system
Complexity, by problems such as pressure and temperature regulating water flow existing defects, it is provided that one can improve cooling water application efficiency,
In the case of close reactor planform size is the most constant, by increasing external force circulation, remove decay from nuclear reactor
The pressure cooling device of heat.
The present invention is by the following technical solutions:
A kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly, nuclear reactor interlayer body runners is positioned at the bottom of lower semisphere
Cover cavity, described lower semisphere bottom bottom outer surface has support foot rest be placed on reactor Di Chi baseplane, described
There is the fixed cooling cylinder of forcing of flange seal above lower semisphere bottom, above described pressure cooling cylinder, have flange seal solid
Determining episphere top cover, episphere top cover top is outside upper packing seal hole, and the described airtight and watertight padding in packing seal hole is close
Close the pilot pipe cylindrical that encapsulate described nuclear reactor interlayer body top, as improvement: described pressure cooling cylinder
Spiral deflector, spiral deflector inward flange is had to join with described nuclear reactor interlayer outer rim gap on cylinder medial wall
Close；The plumb joint outlet that pressure duct is connected on plumb joint exchanger it is circumscribed with on described lower semisphere bottom, described
It is circumscribed with back pressure pipeline on episphere top cover and leads to the plumb joint back pressure mouth on described plumb joint exchanger, described plumb joint
Drain line is had to lead to the lower end in circulating cooling pond, on described plumb joint exchanger on plumb joint excretion mouth on exchanger
Plumb joint suction inlet on have high pressure suction pipe to lead to the upper end in described circulating cooling pond, described circulating cooling pond two ends
Between be disposed with the straight plate of water conservancy diversion, the titanium alloy power shaft outer end on described plumb joint exchanger is connected to power source；
Described plumb joint exchanger entirety also includes plumb joint pump body, sucks welding end cap and back pressure welding end cap,
The described upper and lower both sides of plumb joint pump body have water pump spiral casing and spiral case, the described master on plumb joint pump body respectively
Fixing a pair ceramic bearing cylindrical, ceramic bearing hole fixed square toes main shaft in internal hole, the upper and lower both sides of square toes main shaft are respectively
Fixed water pump vane and water machine runner；It is perpendicular on described water pump spiral casing in the tangential direction of described square toes main shaft
The plumb joint outlet stated, the pump cover step surface that the pump head stomidium of described water pump spiral casing welds end cap with described suction is removable
Unload airtight fastening；Have discharge bevel for welding in the described discharge welding end surface in plumb joint outlet, discharge bevel for welding with
Corresponding groove welding on pressure duct forms the discharge soldered that a circle is airtight；It is perpendicular to described on described spiral case
Square toes main shaft tangential direction on have described plumb joint excretion mouth, the water machine stomidium of described spiral case is with described
The detachable airtight fastening of cover step surface of back pressure welding end cap；Have in the described excretion welding end surface on plumb joint excretion mouth
Excretion bevel for welding, excretion bevel for welding groove welding corresponding with on described drain line forms the excretion weldering that a circle is airtight
Seam；
Described sucking has described plumb joint suction inlet to become with described pump cover step surface central axis on welding ends lid
Being arranged vertically, described sucking has pump cover axis hole to become coaxially arranged with described pump cover step surface central axis on welding ends lid,
It is matched in clearance between described pump cover axis hole and described titanium alloy power shaft, the described packing seal groove on pump cover axis hole
In have sealing ring to press described titanium alloy power shaft periphery；The axle head square hole of described titanium alloy power shaft lower end and institute
Slidably coordinate for axis between the pump end square shaft of the square toes main shaft upper end stated；Suction welding on described plumb joint suction inlet
There is suction bevel for welding on end face, suck bevel for welding airtight with corresponding groove welding formation one circle on described high pressure suction pipe
Suction soldered；Described plumb joint back pressure mouth and described cover step surface central shaft is had on described back pressure welding ends lid
Line becomes coaxially arranged, and the described back pressure welding end surface on plumb joint back pressure mouth has back pressure bevel for welding, back pressure bevel for welding
The back pressure soldered that a circle is airtight is formed with the corresponding groove welding on described back pressure pipeline；Outside described titanium alloy power shaft
Surface laser is coated with the titanium alloy hard anticorrosive material that a layer thickness is 0.58 to 0.62 millimeter, and described titanium alloy hard is resistance to
Elementary composition by following percentage by weight of rotten material: Ti:43 45, Zn:4.6 4.8, Cu:3.7 3.9, W:3.4
3.6, Sn:2.2 2.4, Ni:2.6 2.8, Cr:1.2 1.4, Mo:1.4 1.6, surplus is Fe and the most miscellaneous
Matter；The weight percent content of described impurity is: C less than 0.07, Si less than 0.12, Mn less than 0.16, S is less than 0.0l, P
Less than 0.02；Described ceramic bearing entirety material is zirconia ceramics, with ZrO2(zirconium dioxide) composite is base
Material, is equipped with mineralizer MgO (magnesium oxide), BaCO3(brium carbonate) and bonding clay form, and the weight percent of its each component
It is ZrO than content2:92.1—92.5； MgO:2.5—2.7； BaCO3:2.7—2.8；Bonding clay: 2.3 2.4.
As improving further: described spiral deflector (91) outward flange is along forcing inside cooling cylinder (90) cylinder
The lead angle of wall is 10 to 12 degree.
As improving further: described main body endoporus both sides have housing internal threads to be respectively toward to described water pump spiral casing
Inner chamber and described spiral case inner chamber, described square toes main shaft water pump side has pump bearing section, pump flat key section, pump successively
Thread segment and described pump end square shaft, the described the most organic bearing section in square toes main shaft hydraulic turbine side, machine thread segment and
Machine end optical axis, a pair described ceramic bearing hole respectively with described pump bearing section cylindrical and described machine bearing section cylindrical
Interference fit, a pair described ceramic bearing cylindrical and described main body endoporus interference fits, pair of bearings tight loop external screw thread
The ceramic bearing axial location described in fixed a pair is regulated with described housing internal threads；In the runner of described water machine runner
Screw thread fastens with described machine thread segment threaded engagement；The through hole inner circle of described water pump vane and described pump flat key section cylindrical
Interference fits, water pump nut and described pump thread segment rotational fastener, square hole four wall in described axle head square hole is with described
For being slidably matched between square shaft four sides on pump end square shaft.
As improving further: the runner unthreaded hole of described runner female thread bottom slides with described machine end optical axis and joins
Close, described runner unthreaded hole has six runner screws, described machine end optical axis has five light pin holes, the outer spiral shell of retaining pin
Stricture of vagina section and described runner screw rotational fastener, for sliding between described retaining pin straight pin section and described light pin hole
Coordinate.
As improving further: the square hole four wall degree of depth of described axle head square hole is 46 to 48 millimeters, described square hole four
Wall two opposite side distance is 26 to 28 millimeters, and described square hole four wall 13 port has the square hole groove of 1.5 × 45 degree；Described pump end
A length of 42 to 44 millimeters of the square shaft four sides of square shaft, described square hole four wall two opposite side distance is 26 to 28 millimeters, described side
Axle four sides port has on the square shaft groove of 1.5 × 45 degree, and four adjacent edges at described square shaft four sides and has 1.5 × 45 degree
Square shaft chamfering.
The invention has the beneficial effects as follows:
Being placed in by nuclear reactor interlayer body in pressure cooling cylinder body, particularly forcing to cool down has on cylinder cylinder medial wall
Spiral deflector, spiral deflector outward flange is that 10 to 12 degree are arranged along the lead angle forcing cooling cylinder cylinder medial wall
Enhance cooling effect, described episphere top cover is circumscribed with back pressure pipeline and leads to the welding on described plumb joint exchanger
Head back pressure mouth so that return pressure can obtain efficient recovery, has shared power source load and has reached 30%, it is achieved that fall can purpose；
Utilize and between the two ends of circulating cooling pond, be disposed with the straight plate of water conservancy diversion, simultaneously the excretion of the plumb joint on plumb joint exchanger
There is drain line to lead to the lower end in circulating cooling pond on mouth, the described plumb joint suction inlet on plumb joint exchanger has height
Pressure suction pipe leads to the upper end in described circulating cooling pond so that recirculated cooling water is fully dispelled the heat；
Plumb joint exchanger 60 overall structure of important step of the present invention uses solder design good leak tightness and high pressure resistant, no
Produce any seepage.Wherein plumb joint pump body uses both sides centrosymmetry to be provided with water pump spiral casing and spiral case so that
Mass action power is balanced；The particularly main body endoporus both sides on plumb joint pump body are both provided with housing internal threads, adapted
Pair of bearings tight loop is adjusted tools for alignment blind manipulation notches by socket wrench specially adapted for it and is adjusted in place, it is ensured that water pump vane and water machine runner with
A pair ceramic bearing and be accurately located among water pump spiral casing and spiral case respectively, high through experiment its energy conversion efficiency of display
Reach 68%；
The plumb joint exchanger of important step of the present invention has six runner screws and machine on the runner unthreaded hole of water machine runner
Five light pin hole dislocation correspondences on end optical axis, it is ensured that small rotation between runner female thread and the machine thread segment of water machine runner
Regulation, ensures that retaining pin is directed at runner screw and light pin hole simultaneously, it is achieved water machine runner can relative to square toes main shaft
Bear rotating without unclamping, quick and safe；
The plumb joint exchanger of important step of the present invention is additionally provided with pump end square shaft in the pump thread segment outer end of square toes main shaft
It is slidably matched with the axle head square hole of titanium alloy power shaft, it is achieved that external impetus inputs；The tooth two sides of described square hole four wall
Port has the square hole groove of 1.5 × 45 degree, the tooth two sides port at described square shaft four sides to have the square shaft groove of 1.5 × 45 degree,
It is easy to axle head square hole and is directed at importing with pump end square shaft；Particularly there is the side of 1.5 × 45 degree on four adjacent edges at square shaft four sides
Axle chamfering, it is ensured that precision-fit transmitting large torque between square shaft four sides and square hole four wall.
The key components and parts of the plumb joint exchanger of important step of the present invention, the titanium alloy power shaft of dynamic seal is at cylindrical
Surface laser is coated with one layer of titanium alloy hard anticorrosive material, and the ceramic bearing entirety material of dynamic friction bearing part is zirconium oxide pottery
Porcelain, the most corrosion-resistant but also wear-resistant.
Accompanying drawing explanation
Fig. 1 is schematic top plan view of the present invention.
Fig. 2 is by the profile at episphere top cover 97 center in Fig. 1.
Fig. 3 is the independent profile forcing cooling cylinder 90 in Fig. 2.
Fig. 4 is the generalized section of plumb joint exchanger 60 in Fig. 1.
Fig. 5 is plumb joint pump body 61 generalized section in Fig. 4.
Fig. 6 is suction welding end cap 41 generalized section in Fig. 4.
Fig. 7 is back pressure welding end cap 81 generalized section in Fig. 4.
Fig. 8 is enlarged local section schematic diagram residing for the water pump nut 72 in Fig. 1.
Fig. 9 is the A-A profile in Fig. 8.
Figure 10 is the B-B profile in Fig. 8.
Figure 11 is the C-C profile in Fig. 8.
Figure 12 is the axle head square hole 71 position enlarged drawing of titanium alloy power shaft 77 in Fig. 8.
Figure 13 is pump flat key section 34 and the transmission flat key 11 position enlarged drawing of square toes main shaft 33 in Fig. 8.
Figure 14 is enlarged local section schematic diagram residing for the retaining pin 19 in Fig. 1.
Figure 15 is the D-D profile in Figure 14.
Figure 16 is the machine thread segment 36 position enlarged drawing of square toes main shaft 33 in Figure 14.
Figure 17 is the runner female thread 26 position profile of Figure 14 moderate water apparatus runner 88.
Figure 18 is bearing tight loop 75 generalized section in Fig. 4.
Figure 19 is bearing tight loop 75 top view in Figure 18.
Detailed description of the invention
Structure and operation principle to the present invention are further elaborated in conjunction with the accompanying drawings and embodiments:
A kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly, nuclear reactor interlayer body 30 runners is positioned at lower semisphere
Bottom 92 inner chamber, described lower semisphere bottom 92 bottom outer surface has support foot rest 20 to be placed in baseplane, pond 10 at the bottom of reactor
On, there are the fixed cooling cylinder 90 of forcing of flange seal, described pressure cooling cylinder 90 above described lower semisphere bottom 92
There is flange seal fixed episphere top cover 97 top, and episphere top cover 97 top is outside upper packing seal hole 79, and described fills out
Material seals the airtight and watertight padding hermetic seal in hole 79 and pilot pipe 98 cylindrical at described nuclear reactor interlayer body 30 top,
As improvement: there is spiral deflector 91 on described pressure cooling cylinder 90 cylinder medial wall, spiral deflector 91 inward flange with
Described nuclear reactor interlayer body 30 outward flange matched in clearance；It is circumscribed with pressure duct 94 on described lower semisphere bottom 92 to connect
The plumb joint outlet 69 on plumb joint exchanger 60, described episphere top cover 97 is circumscribed with back pressure pipeline 87 and leads to institute
Plumb joint back pressure mouth 89 on the plumb joint exchanger 60 stated, on the plumb joint excretion mouth 82 on described plumb joint exchanger 60
Drain line 28 is had to lead to the lower end in circulating cooling pond 50, on the described plumb joint suction inlet 65 on plumb joint exchanger 60
There is high pressure suction pipe 56 to lead to the upper end in described circulating cooling pond 50, be disposed with between described circulating cooling pond 50 two ends
The straight plate of water conservancy diversion 21, titanium alloy power shaft 77 outer end on described plumb joint exchanger 60 is connected to power source 70；
Described plumb joint exchanger 60 entirety also includes plumb joint pump body 61, sucks welding end cap 41 and back pressure welding
End cap 81, described plumb joint pump body about 61 both sides have water pump spiral casing 67 and spiral case 66, described welding respectively
A pair ceramic bearing 73 cylindrical, ceramic bearing 73 endoporus fixed square toes main shaft is fixed in main body endoporus 63 on head pump body 61
33, square toes main shaft about 33 both sides fixed water pump vane 44 and water machine runner 88 respectively；On described water pump spiral casing 67 vertically
Described plumb joint outlet 69, the pump head end of described water pump spiral casing 67 is had in the tangential direction of described square toes main shaft 33
The detachable airtight fastening of pump cover step surface 46 of end cap 41 is welded in hole 64 with described suction；In described plumb joint outlet 69
Discharge welding end surface 53 on have discharge bevel for welding 55, discharge bevel for welding 55 and the corresponding groove welding on pressure duct 94
Form the discharge soldered 99 that a circle is airtight；The tangent line side of described square toes main shaft 33 it is perpendicular on described spiral case 66
Upwards having described plumb joint excretion mouth 82, the water machine stomidium 68 of described spiral case 66 welds end cap with described back pressure
The detachable airtight fastening of cover step surface 86 of 81；Excretion is had in the described excretion welding end surface 83 on plumb joint excretion mouth 82
Bevel for welding 85, excretion bevel for welding 85 forms the excretion that a circle is airtight with the corresponding groove welding on described drain line 28
Soldered 58；
Described sucking has described plumb joint suction inlet 65 and described pump cover step surface 46 center on welding end cap 41
Axis becomes to be arranged vertically, and described sucking has pump cover axis hole 47 and described pump cover step surface 46 central axis on welding end cap 41
Become coaxially arranged, be matched in clearance between described pump cover axis hole 47 and described titanium alloy power shaft 77, described pump cover axle
Packing seal groove 74 on hole 47 there is sealing ring press described titanium alloy power shaft 77 periphery；Described titanium alloy is defeated
Enter and slidably coordinate for axis between the axle head square hole 71 of axle 77 lower end and the pump end square shaft 31 of described square toes main shaft 33 upper end；
There is suction bevel for welding 45 in the described suction welding end surface 43 on plumb joint suction inlet 65, suck bevel for welding 45 with described
High pressure suction pipe 56 on corresponding groove welding form an airtight suction soldered 54 of circle；On described back pressure welding end cap 81
Described plumb joint back pressure mouth 89 is had to become coaxially arranged with described cover step surface 86 central axis, described plumb joint back pressure
Back pressure bevel for welding 95 is had, on back pressure bevel for welding 95 and described back pressure pipeline 87 in back pressure welding end surface 93 on mouth 89
Corresponding groove welding forms the back pressure soldered 59 that a circle is airtight；Described titanium alloy power shaft 77 outer surface laser spraying has one
Layer thickness is the titanium alloy hard anticorrosive material of 0.58 to 0.62 millimeter, and described titanium alloy hard anticorrosive material is by following weight
Percentage ratio elementary composition: Ti:43 45, Zn:4.6 4.8, Cu:3.7 3.9, W:3.4 3.6, Sn:2.2 2.4,
Ni:2.6 2.8, Cr:1.2 1.4, Mo:1.4 1.6, surplus is Fe and inevitable impurity；The weight hundred of described impurity
Proportion by subtraction content is: C less than 0.07, Si less than 0.12, Mn less than 0.16, S less than 0.0l, P less than 0.02；Described pottery
The overall material of bearing 73 is zirconia ceramics, with ZrO2(zirconium dioxide) composite is base material, is equipped with mineralizer MgO (oxygen
Change magnesium), BaCO3(brium carbonate) and bonding clay form, and the weight percent content of its each component is ZrO2:92.1—
92.5； MgO:2.5—2.7； BaCO3:2.7—2.8；Bonding clay: 2.3 2.4.
As improving further: described spiral deflector (91) outward flange is along forcing inside cooling cylinder (90) cylinder
The lead angle of wall is 10 to 12 degree.
As improving further: described main body endoporus 63 both sides have housing internal threads 62 to be respectively toward to described water pump
Spiral case 67 inner chamber and described spiral case 66 inner chamber, described square toes main shaft 33 water pump side has pump bearing section successively
35, pump flat key section 34, pump thread segment 32 and described pump end square shaft 31, described square toes main shaft 33 hydraulic turbine side has successively
Machine bearing section 37, machine thread segment 36 and machine end optical axis 39, described a pair ceramic bearing 73 endoporus respectively with described pump shaft
The section of holding 35 cylindrical and described machine bearing section 37 cylindrical interference fit, described a pair ceramic bearing 73 cylindrical and described master
Internal hole 63 interference fits, pair of bearings tight loop 75 external screw thread and described housing internal threads 62 regulate described in fixed a pair
Ceramic bearing 73 axial location；Runner female thread 26 and described machine thread segment 36 threaded engagement of described water machine runner 88
Fastening；The through hole inner circle 22 of described water pump vane 44 and described pump flat key section 34 cylindrical interference fits, water pump nut 72 with
Described pump thread segment 32 rotational fastener, square hole four wall in described axle head square hole 71 13 with on described pump end square shaft 31
For being slidably matched between square shaft four sides 14.
As improving further: the runner unthreaded hole 29 of described runner female thread 26 bottom is sliding with described machine end optical axis 39
Dynamic cooperation, described runner unthreaded hole 29 has six runner screws 15, described machine end optical axis 39 has five light pin holes 16,
Retaining pin 19 external thread section and described runner screw 15 rotational fastener, described retaining pin 19 straight pin section is with described
For being slidably matched between light pin hole 16.
As improving further: square hole four wall 13 degree of depth of described axle head square hole 71 is 46 to 48 millimeters, described side
13 liang of opposite side distances of Kong Sibi are 26 to 28 millimeters, and described square hole four wall 13 port has the square hole groove 23 of 1.5 × 45 degree；Institute
The square shaft of the pump end square shaft 31 stated 14 a length of 42 to 44 millimeters on four sides, described 13 liang of opposite side distances of square hole four wall are 26 to 28
Millimeter, described square shaft four sides 14 ports have a square shaft groove 24 of 1.5 × 45 degree, and described square shaft on four sides four of 14 adjacent
The square shaft chamfering 17 of 1.5 × 45 degree is had on limit.
As improving further: have 2 blind manipulation notches 76 on described bearing tight loop 75 1 side end face.
As improving further: described runner bucket 84 layout angle on water machine runner 88 and described square toes main shaft
33 rotation axiss become 47 to 49 degree angles, preferably 48 degree.
In embodiment:
Spiral deflector (91) outward flange is 11 degree along forcing the lead angle cooling down cylinder (90) cylinder medial wall；
Power source 70 selects frequency conversion motor, and the waterline 25 of the safety anti-explosive water in circulating cooling pond 50 is in packing seal hole
Below 79, the airtight and watertight padding in packing seal hole 79 presses pilot pipe 98 cylindrical, constitutes static sealing.
Water inlet control valve door 96 and outlet water control valve door 78 is had respectively, it is simple to maintenance on pressure duct 94 and back pressure pipeline 87
Process.
The titanium alloy that described titanium alloy power shaft 77 outer surface laser spraying has a layer thickness to be 0.43 to 0.47 millimeter
Hard anticorrosive material, elementary composition by following percentage by weight of described titanium alloy hard anticorrosive material: Ti:44, Zn:4.7,
W:3.5, Sn:2.3, Ni:2.7, Cr:1.3, Mo:1.5, surplus is Fe and inevitable impurity；The weight hundred of described impurity
Proportion by subtraction content is: C is 0.06, Si is 0.11, Mn is 0.15, S is 0.009, P is 0.018；
The overall material of described ceramic bearing 73 is zirconia ceramics, with Si3N4 (zirconium oxide) as base material, is equipped with mineralising
Agent MgO (magnesium oxide), BaCO3Brium carbonate and bonding clay form, and the weight percent content of its each component is Si3N4:
92.3； MgO:2.6； BaCO3:2.75；Bonding clay: 2.35.
The work process of the present invention is as follows:
One, plumb joint exchanger 60 assembles:
1. use to place after 500 to 525 degree thermostatic chambers continue 50 to 58 minutes a pair ceramic bearing 73 and take out, 3 minutes
Within by heating a pair ceramic bearing 73 be respectively fitted over pump bearing section 35 and machine bearing section 37, wait entirety after being cooled to room temperature to put
Put among the main body endoporus 63 on plumb joint pump body 61；
2. pair of bearings tight loop 75 is rotated on the housing internal threads 62 of main body endoporus 63 both sides respectively, by socket wrench specially adapted for it
Adjust tools for alignment blind manipulation notches 76 to be adjusted in place, it is ensured that water pump vane 44 and water machine runner 88 are accurately located at water pump the most respectively
Among spiral case 67 and spiral case 66；
3. the runner female thread 26 on water machine runner 88 and machine thread segment 36 rotatable engagement pretension, when on runner unthreaded hole 29
1 runner screw 15 in 6 runner screws 15 and any 1 the light pivot pin in 5 light pin holes 16 on machine end optical axis 39
Hole 16 is on time, by retaining pin 19 external thread section and runner screw 15 rotational fastener so that retaining pin 19 straight pin section with
For being slidably matched between described light pin hole 16.Ensure that retaining pin 19 is directed at runner screw 15 and light pin hole simultaneously
16, it is achieved water machine runner 88 can bear rotating without unclamping relative to square toes main shaft 33, quick and safe；
4. the cover step surface 86 of back pressure welding end cap 81 is directed at the water machine stomidium 68 of described spiral case 66, and uses
12 screws pass through 12 through holes on cover step surface 86 respectively, airtight 12 screws being fastened on water machine stomidium 68 periphery it
In；
5. the transmission flat key 11 in the alignment of the keyway on water pump vane 44 through hole pump flat key section 34 is pressed into so that water pump vane
The through hole inner circle 22 of 44 and described pump flat key section 34 cylindrical interference fits；
6. water pump nut 72 and pump thread segment 32 rotational fastener；
7. the pump cover step surface 46 sucking welding end cap 41 is directed at the pump head stomidium 64 of water pump spiral casing 67, and with 10 spiral shells
Nail passes through 10 through holes on pump cover step surface 46, among airtight 10 screws being fastened on pump head stomidium 64 periphery respectively；
8. axle head square hole 71 ecto-entad of titanium alloy power shaft 77 passes through the pump cover axis hole 47 sucked on welding end cap 41,
Using to have on pump cover axis hole 47 in packing seal groove 74 has sealing ring to press described titanium alloy power shaft 77 periphery composition
Movable sealing.Utilize square hole four wall 13 port to have the square hole groove 23 of 1.5 × 45 degree, and square shaft four sides 14 ports have 1.5 × 45
The square shaft groove 24 of degree, imports on pump end square shaft 31 by axle head square hole 71 alignment, so that it may transmission moment of torsion.
Two, plumb joint exchanger 60 pipeline connects:
By the discharge welding end surface 53 in described plumb joint outlet 69 and discharge bevel for welding 55 and pressure duct
Corresponding groove correction on 94 is directed at and welds and forms the discharge soldered 99 that a circle is airtight；
Described plumb joint is drained the excretion welding end surface 83 on mouth 82 and excretion bevel for welding 85 thereof and drain line
Corresponding groove correction on 28 is directed at and welds and forms the excretion soldered 58 that a circle is airtight；
By the suction welding end surface 43 on described plumb joint suction inlet 65 and suck bevel for welding 45 and high pressure suction pipe
Corresponding groove correction on 56 is directed at and welds and forms the suction soldered 54 that a circle is airtight；
By the back pressure welding end surface 93 on described plumb joint back pressure mouth 89 and back pressure bevel for welding 95 thereof and back pressure pipeline
Corresponding groove correction on 87 is directed at and welds and forms the back pressure soldered 59 that a circle is airtight.
Three, plumb joint exchanger 60 running:
Starting power source 70 high-power driving plumb joint exchanger 60, it is defeated that power source 70 outfan is fixedly connected titanium alloy
Enter axle 77 upper end, the pump end square shaft 31 of the axle head square hole of titanium alloy power shaft 77 lower end 71 and described square toes main shaft 33 upper end it
Between slidably coordinate for axis, square toes main shaft 33 high speed rotating described in driving；Then the water pump leaf on square toes main shaft 33 is driven
Wheel 44 and water machine runner 88 high speed rotating.
The centrifugal force utilizing water pump vane 44 high speed rotating to produce produces negative pressure at plumb joint suction inlet 65, inhales through high pressure
Pipe 56 sucks the recirculated cooling water in circulating cooling pond 50；Utilize the centrifugal force that water pump vane 44 high speed rotating produces water pump snail
Producing high pressure at shell 67, the pressures cycle cooling water that plumb joint outlet 69 is discharged is injected into lower semisphere bottom 92, along spiral
Deflector 91 accelerates flowing, lowers the temperature nuclear reactor interlayer body 30 outer surface, flows through after episphere top cover 97 from back pressure pipe
Road 87 leads to the plumb joint back pressure mouth 89 on described plumb joint exchanger 60, acts on the runner bucket 84 on square toes main shaft 33
On, become 48 degree of angles by means of runner bucket 84 layout angle on dampener runner 88 with the rotation axis of square toes main shaft 33, promote
Water machine runner 88, with identical direction of rotation more high speed rotating, drives square toes main shaft 33 rotary speed to improve 1 percentage point, shares
Power source 70 load reaches 30%, it is achieved that fall can purpose.
Nuclear reactor interlayer body 30 is placed in pressure cooling cylinder 90, particularly forces inside cooling cylinder 90 cylinder
There is spiral deflector 91 to enhance cooling effect on wall, described episphere top cover 97 is circumscribed with back pressure pipeline 87 and leads to described
Plumb joint exchanger 60 on plumb joint back pressure mouth 89 so that return pressure can obtain efficient recovery, has shared power source 70
Load reaches 30%, it is achieved that fall can purpose；
Utilize and between the two ends of circulating cooling pond 50, be disposed with the straight plate of water conservancy diversion 21, simultaneously by the weldering on plumb joint exchanger 60
Drain line 28 is had to lead to the lower end in circulating cooling pond 50, the described weldering on plumb joint exchanger 60 on joint excretion mouth 82
High pressure suction pipe 56 is had to lead to the upper end in described circulating cooling pond 50 on joint suction inlet 65 so that recirculated cooling water is filled
Dispersion heat.The particularly overall outer surface of nuclear reactor interlayer body 30 is in the high pressure state of cooling all the time, counteract nuclear reactor every
Layer partial high pressure impact within body 30.
Plumb joint exchanger 60 overall structure of important step of the present invention uses solder design good leak tightness and high pressure resistant, no
Produce any seepage.Wherein plumb joint pump body 61 uses both sides centrosymmetry to be provided with water pump spiral casing 67 and spiral case
66 so that mass action power is balanced；Particularly main body endoporus 63 both sides on plumb joint pump body 61 are both provided with housing
Female thread 62, adapted pair of bearings tight loop 75 is adjusted tools for alignment blind manipulation notches 76 by socket wrench specially adapted for it and is adjusted in place, it is ensured that water
Impeller of pump 44 and water machine runner 88 are accurately located among water pump spiral casing 67 and spiral case 66 the most respectively, show it through experiment
Energy conversion efficiency is up to 68%.
The plumb joint exchanger 60 of important step of the present invention has six runner spiral shells on the runner unthreaded hole 29 of water machine runner 88
Hole 15 misplaces corresponding with five light pin holes 16 on machine end optical axis 39, it is ensured that runner female thread 26 and the machine spiral shell of water machine runner 88
Between stricture of vagina section 36, small rotation regulates, and ensures that retaining pin 19 is directed at runner screw 15 and light pin hole 16 simultaneously, it is achieved
Water machine runner 88 can bear rotating without unclamping relative to square toes main shaft 33, quick and safe.
The plumb joint exchanger 60 of important step of the present invention is additionally provided with pump in pump thread segment 32 outer end of square toes main shaft 33
End square shaft 31 is slidably matched with the axle head square hole 71 of titanium alloy power shaft 77, it is achieved that external impetus inputs；Described square hole four
Wall 13 port has the square hole groove 23 of 1.5 × 45 degree, described square shaft four sides 14 ports to have the square shaft groove 24 of 1.5 × 45 degree,
It is easy to axle head square hole 71 and is directed at importing with pump end square shaft 31；Particularly have 1.5 × 45 on four adjacent edges at square shaft four sides 14
The square shaft chamfering 17 of degree, it is ensured that precision-fit transmitting large torque between square shaft four sides 14 and square hole four wall 13.
The key components and parts of the plumb joint exchanger 60 of important step of the present invention, the titanium alloy power shaft 77 of dynamic seal exists
Outer round surface laser spraying has one layer of titanium alloy hard anticorrosive material, and the overall material of the ceramic bearing 73 of dynamic friction bearing part is oxygen
Change zircon ceramic, the most corrosion-resistant but also wear-resistant.
The anti-corrosion wear experimental data contrast of (table 1) zirconia ceramics bearing and 316 stainless steel bearings
By the contrasting data of table 1 it follows that the corrosion resistant antiwear ability of zirconia ceramics bearing is better than far away 316 not
Rust steel bearing.
(table 2) is the titanium alloy hard anticorrosive material coating of titanium alloy power shaft 77 outer surface, with conventional stainless steel
The surface roughness extent of damage experimental data contrast
By the contrasting data of table 2 it follows that outer round surface laser spraying has the titanium of one layer of titanium alloy hard anticorrosive material
The surface roughness that the surface roughness extent of damage of alloy power shaft 77 is far smaller than conventional stainless steel outer surface is impaired
Degree.
Claims (5)
1. a plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly, nuclear reactor interlayer body (30) runners is positioned at lower semisphere
Bottom (92) inner chamber, described lower semisphere bottom (92) bottom outer surface has support foot rest (20) to be placed in pond at the bottom of reactor
(10), on baseplane, there is fixed pressure cooling cylinder (90) of flange seal described lower semisphere bottom (92) top, described
Forcing cooling cylinder (90) top to have flange seal fixed episphere top cover (97), episphere top cover (97) top is outside upper to be filled out
Material seals hole (79), and the described airtight and watertight padding hermetic seal in packing seal hole (79) described nuclear reactor interlayer body
(30) pilot pipe (98) cylindrical at top, is characterized in that: have spiral shell on described pressure cooling cylinder (90) cylinder medial wall
Rotation deflector (91), spiral deflector (91) inward flange and described nuclear reactor interlayer body (30) outward flange matched in clearance；Institute
It is circumscribed with, on the lower semisphere bottom (92) stated, the plumb joint outlet that pressure duct (94) is connected on plumb joint exchanger (60)
(69) it is circumscribed with back pressure pipeline (87) on, described episphere top cover (97) and leads to the weldering on described plumb joint exchanger (60)
Joint back pressure mouth (89), plumb joint excretion mouth (82) on described plumb joint exchanger (60) has drain line (28) to lead to
The lower end in circulating cooling pond (50), the described plumb joint suction inlet (65) on plumb joint exchanger (60) has high pressure suction pipe
(56) lead to the upper end in described circulating cooling pond (50), between described circulating cooling pond (50) two ends, be disposed with water conservancy diversion
Straight plate (21), titanium alloy power shaft (77) outer end on plumb joint exchanger (60) is connected to power source (70)；
Described plumb joint exchanger (60) entirety also includes plumb joint pump body (61), sucks welding end cap (41) and back pressure weldering
Connecing end cap (81), described plumb joint pump body (61) has water pump spiral casing (67) and spiral case (66) in both sides up and down respectively,
A pair ceramic bearing (73) cylindrical, ceramic bearing (73) is fixed in the described main body endoporus (63) on plumb joint pump body (61)
Endoporus fixed square toes main shaft (33), square toes main shaft (33) both sides up and down fixed water pump vane (44) and water machine runner respectively
(88)；It is perpendicular to have described plumb joint to arrange in the tangential direction of described square toes main shaft (33) on described water pump spiral casing (67)
Outlet (69), the pump head stomidium (64) of described water pump spiral casing (67) welds the pump cover step surface of end cap (41) with described suction
(46) detachable airtight fastening；Discharge bevel for welding is had in the described discharge welding end surface (53) in plumb joint outlet (69)
(55), discharge bevel for welding (55) and form the discharge soldered that a circle is airtight with the corresponding groove welding on pressure duct (94)
(99)；It is perpendicular to have described plumb joint in the tangential direction of described square toes main shaft (33) on described spiral case (66)
Excretion mouth (82), water machine stomidium (68) of described spiral case (66) welds the cover platform of end cap (81) with described back pressure
The detachable airtight fastening of terrace (86)；Excretion welding is had in the described excretion welding end surface (83) on plumb joint excretion mouth (82)
Groove (85), excretion bevel for welding (85) forms the row that a circle is airtight with the corresponding groove welding on described drain line (28)
Let out soldered (58)；
Have in described plumb joint suction inlet (65) and described pump cover step surface (46) in described suction welding end cap (41)
Mandrel line becomes to be arranged vertically, and described suction welding end cap (41) has pump cover axis hole (47) and described pump cover step surface (46)
Central axis becomes coaxially arranged, is matched in clearance between described pump cover axis hole (47) and described titanium alloy power shaft (77),
The described packing seal groove (74) on pump cover axis hole (47) there is sealing ring to press described titanium alloy power shaft (77) outward
Disc；The axle head square hole (71) of described titanium alloy power shaft (77) lower end and the pump end side of described square toes main shaft (33) upper end
Axle slidably coordinates for axis between (31)；Suction is had in the described suction welding end surface (43) on plumb joint suction inlet (65)
Bevel for welding (45), sucks bevel for welding (45) airtight with corresponding groove welding formation one circle on described high pressure suction pipe (56)
Suction soldered (54)；Described plumb joint back pressure mouth (89) and described cover is had in described back pressure welding end cap (81)
Step surface (86) central axis becomes coaxially arranged, and the described back pressure welding end surface (93) on plumb joint back pressure mouth (89) has back
Pressure bevel for welding (95), it is close that back pressure bevel for welding (95) forms a circle with the corresponding groove welding on described back pressure pipeline (87)
The back pressure soldered (59) closed；Described titanium alloy power shaft (77) outer surface laser spraying has a layer thickness to be 0.58 to 0.62
The titanium alloy hard anticorrosive material of millimeter, elementary composition by following percentage by weight of described titanium alloy hard anticorrosive material:
Ti:43—45、Zn:4.6—4.8、Cu:3.7—3.9、W: 3.4—3.6、Sn: 2.2—2.4、Ni:2.6—2.8、Cr:
1.2 1.4, Mo:1.4 1.6, surplus is Fe and inevitable impurity；The weight percent content of described impurity is: C is few
In 0.07, Si less than 0.12, Mn less than 0.16, S less than 0.01, P is less than 0.02；Described ceramic bearing (73) is overall
Material is zirconia ceramics, with ZrO2(zirconium dioxide) composite is base material, is equipped with mineralizer MgO (magnesium oxide), BaCO3
(brium carbonate) and bonding clay form, and the weight percent content of its each component is ZrO2:92.1—92.5； MgO:
2.5—2.7； BaCO3:2.7—2.8；Bonding clay: 2.3 2.4.
A kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly the most according to claim 1, is characterized in that: described
Spiral deflector (91) outward flange along force cooling cylinder (90) cylinder medial wall lead angle be 10 to 12 degree.
A kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly the most according to claim 1, is characterized in that: described
Main body endoporus (63) both sides have housing internal threads (62) to be respectively toward to described water pump spiral casing (67) inner chamber and described
Spiral case (66) inner chamber, described square toes main shaft (33) water pump side have successively pump bearing section (35), pump flat key section (34),
Pump thread segment (32) and described pump end square shaft (31), the described the most organic bearing section in square toes main shaft (33) hydraulic turbine side
(37), machine thread segment (36) and machine end optical axis (39), described a pair ceramic bearing (73) endoporus respectively with described pump shaft
The section of holding (35) cylindrical and described machine bearing section (37) cylindrical interference fit, described a pair ceramic bearing (73) cylindrical and institute
Main body endoporus (63) interference fits stated, pair of bearings tight loop (75) external screw thread is solid with the regulation of described housing internal threads (62)
Determine ceramic bearing (73) axial location described in a pair；The runner female thread (26) of described water machine runner (88) is with described
Machine thread segment (36) threaded engagement fastens；The through hole inner circle (22) of described water pump vane (44) and described pump flat key section (34)
Cylindrical interference fits, water pump nut (72) and described pump thread segment (32) rotational fastener, in described axle head square hole (71)
For being slidably matched between square shaft four sides (14) on square hole four wall (13) and described pump end square shaft (31).
A kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly the most according to claim 3, is characterized in that: described
The runner unthreaded hole (29) of runner female thread (26) bottom be slidably matched with described machine end optical axis (39), described runner unthreaded hole
(29) there are six runner screws (15) on, described machine end optical axis (39) has five light pin holes (16), retaining pin (19)
External thread section and described runner screw (15) rotational fastener, described retaining pin (19) straight pin section and described light pivot pin
For being slidably matched between hole (16).
A kind of plumb joint titanium alloy zirconium oxide nuclear reactor cooling assembly the most according to claim 3, is characterized in that: described
Square hole four wall (13) degree of depth of axle head square hole (71) be 46 to 48 millimeters, described square hole four wall (13) two opposite side distance is 26
To 28 millimeters, described square hole four wall (13) port has the square hole groove (23) of 1.5 × 45 degree；Described pump end square shaft (31)
A length of 42 to 44 millimeters of square shaft four sides (14), described square hole four wall (13) two opposite side distance is 26 to 28 millimeters, described
Square shaft four sides (14) port has the square shaft groove (24) of 1.5 × 45 degree, and on four adjacent edges of described square shaft four sides (14)
There is the square shaft chamfering (17) of 1.5 × 45 degree.
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