CN109899296A - Pump is filled on a kind of RCV - Google Patents
Pump is filled on a kind of RCV Download PDFInfo
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- CN109899296A CN109899296A CN201910276983.4A CN201910276983A CN109899296A CN 109899296 A CN109899296 A CN 109899296A CN 201910276983 A CN201910276983 A CN 201910276983A CN 109899296 A CN109899296 A CN 109899296A
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- bearing
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- impeller
- cylinder
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000010687 lubricating oil Substances 0.000 claims description 24
- 238000005461 lubrication Methods 0.000 claims description 23
- 238000011049 filling Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Abstract
The invention discloses pump, including cylinder is filled on a kind of RCV of nuclear power field, medium entrance and media outlet are respectively positioned on the bottom of the cylinder, and the medium entrance is located at the center of the cylinder, and the media outlet deviates the center of the cylinder；It is equipped in the cylinder and is connected to the medium entrance, run through the placing chamber of the cylinder vertically, be equipped with core packet in the placing chamber；The core packet includes the chopped-off head middle section set gradually from bottom to up, N-2 lower part middle section, final stage lower part middle section, interlude, final stage top middle section, N-2 top middle section and suction cover, and the top of the cylinder is closed by pump cover；Final stage top middle section, N-2 top middle section and the suction cover are linked to be top entirety by more top rods；The chopped-off head middle section, N-2 lower part middle section, final stage lower part middle section and the interlude are linked to be lower part entirety by more lower part rods；It is bolted between the whole and described lower part entirety in the top by connection, and is compressed by disk spring.
Description
Technical field
The present invention relates to fill pump on a kind of RCV of nuclear power equipment field.
Background technique
A kind of concern of the nuclear power as powerful, controllable and comparatively safe clean energy resource increasingly by many countries,
And environmental problem caused by greenhouse gas emission brings huge pressure, by Perspective of The World Nuclear Power Station good operational performance and
The nuclear power technology of promotion is gradually improved, so that world nuclear is fast-developing steadily.
The power generation total amount of China's nuclear power station is fewer, smaller compared with the generated energy in the whole nation, the core with other countries, the world
Electric average level is compared, first poor very remote.In order to ensure the energy safety of supply and meet the continuous increased requirement of China's electric power, subtract
Few environmental pollution, the sustainable and stable development readjusted the energy structure, guarantee national economy society, the nuclear power policy in China is made that suitable
When adjustment, " positive Nuclear Power Development " is gradually changed by " optimum development nuclear power ".Due to the support of national policy, promote China
Construction of Nuclear Electricity enters fast-developing period.
Pump is filled on RCV, is applied to the imperial No.1 heap-type nuclear power station of China, it will be through handling, such as purification plus hydrogen, dosing, degasification, tune
It is filled on reactor coolant after boron etc. into RCP system, provides No.1 axle envelope injection water for three reactor coolant pumps, is
The injector of hydrogenation stations, which provides, promotes stream.RCV is known as cvcs.RCP system is known as reactor coolant system
System.
The current problems faced of pump is filled on RCV includes:
Pump journey height is filled on RCV, series is more, need to comprehensively consider rotor dynamics, considers pump group rigidity, it is ensured that pump group vibration
Well.
Pump group should be able to be directly initiated in no pre-lubrication.
Summary of the invention
The purpose of the invention is to overcome the deficiencies of the prior art and provide to fill pump on a kind of RCV, can filter pump portion
Divide vibration, and in the thermal expansion of core packet, concedes the size incrementss of elongation, increase the stability and efficiency of pump.
Realizing a kind of technical solution of above-mentioned purpose is: filling pump, including cylinder on a kind of RCV, medium entrance and medium go out
Mouth is respectively positioned on the bottom of the cylinder, and the medium entrance is located at the center of the cylinder, and the media outlet deviates the cylinder
The center of body；It is equipped in the cylinder and is connected to the medium entrance, run through the placing chamber of the cylinder, the placing chamber vertically
It is interior to be equipped with core packet；
The core packet include the chopped-off head middle section set gradually from bottom to up, N-2 lower part middle section, final stage lower part middle section, in
Between section, final stage top middle section, N-2 top middle section and suction cover, the top of the cylinder passes through pump cover and closes；
It is whole that final stage top middle section, N-2 top middle section and the suction cover by more top rods are linked to be top
Body；
The chopped-off head middle section, N-2 lower part middle section, final stage lower part middle section and the interlude are worn by more lower parts
Thick stick is linked to be lower part entirety；
It is bolted between the whole and described lower part entirety in the top by connection, and is compressed by disk spring.
Further, the upper surface and the final stage lower part in the upper surface in the chopped-off head middle section, N-2 lower part middle section
A lower part guide vane is fixed in the upper surface in middle section, surrounds a first stage impeller space and the N-1 set gradually from bottom to up
Lower wheel space；
The lower end surface of the lower end surface in final stage top middle section, the lower end surface in N-2 top middle section and the suction cover is equal
A top guide vane is fixed, the N number of upper wheel space set gradually from bottom to up is surrounded；
The pump shaft runs through the core packet vertically, and is socketed with first stage impeller corresponding with the first stage impeller space, with
The corresponding N-1 lower impeller of the lower wheel spaces of N-1, and N number of upper impeller corresponding with N number of upper wheel space；
The water inlet of the first stage impeller and N-1 lower impellers is downward, and the water inlet of N number of upper impeller is upward.
Further, the radially inner side in final stage lower part middle section and the radially inner side in N-2 lower part middle section are fixed
There is a lower impeller ring；
The radially inner side of lower part guide vane corresponding with the chopped-off head middle section, N-2 corresponding with N-2 lower part middle section
The radially inner side of lower part guide vane is respectively and fixedly provided with a lower part guide blade sleeve, lower part corresponding with final stage lower part middle section guide vane and institute
State the clamping of interlude stairstepping；
Radially inner side, the radially inner side in N-2 top middle section and the radial direction of the suction cover in final stage top middle section
Inside is respectively and fixedly provided with a upper impeller ring；
The radially inner side and the suction cover of N-2 top guide vane corresponding with N-2 top middle section are corresponding
The radially inner side of top guide vane is respectively and fixedly provided with a top guide blade sleeve；Top corresponding with final stage top middle section guide vane and institute
State the clamping of interlude stairstepping.
Further, it is equipped between the chopped-off head middle section and the first stage impeller solid with the inner periphery in the chopped-off head middle section
Fixed lower guide bearing；The intermediate guide shaft fixed with the inner periphery of the interlude is equipped between the interlude and the pump shaft
It holds；Between the pump cover and the pump shaft, equipped with the top guide bearing that the inner periphery with the pump cover is fixed；
Annular gap between the core packet and the cylinder is divided into above the interlude by the interlude
Medium up rise channel is connected to the media outlet channel of the media outlet with below the interlude；
The interlude is equipped with the water outlet of the lower impeller of connection top and the medium mistake of the medium up rise channel
Circulation road, and it is connected to the water outlet of the upper impeller of lowermost end and the medium back flow channel of the media outlet channel；
The contact that the suction cover is equipped with the water inlet of the upper impeller of the connection medium up rise channel and top is logical
Road.
Further, formed between the sealing ring surface of the first stage impeller and the inner periphery of the lower guide bearing it is described under
The lubrication face of guide bearing；
There are the lubrication channels for the water outlet for being connected to the first stage impeller on the chopped-off head middle section；
The lower guide bearing is equipped with the radial lubrication channel for being connected to the lubrication channel and the lubrication face.
Also further, the bottom surface of the lower guide bearing is coaxially fixed with water-inlet horn, the lower guide bearing, it is described into
It is fixed along vertical direction between water loudspeaker and the chopped-off head middle section, the inner periphery of the water-inlet horn front end is equipped with the chopped-off head
The corresponding deflector of the water inlet of impeller.
Further, mechanical seal is equipped between the pump cover and the pump shaft, the mechanical seal is Double End machine
Tool sealing.
Further, the top surface of the pump cover is fixed with bearing body support frame, and the bearing body support frame is fixedly arranged above
The inner periphery of bearing body, the bearing body is equipped with ball bearing；
The radially inner side of the ball bearing, equipped with the bearing holder (housing, cover) being sleeved and fixed with the pump shaft；Inside the bearing holder (housing, cover)
Enter channel equipped with vertical lubricating oil；The excircle of the bearing body is equipped with lubricating oil return pipeline；Inside the bearing body
Equipped with lubricating oil memory space；The lubricating oil enters channel and is connected to the lubricating oil storage with the lubricating oil return pipeline
Space and the ball bearing.
Further, the excircle around the excircle of the bearing body and the lubricating oil memory space is all provided with
There is radiating rib plate, the sharp hook that the lower end of the bearing holder (housing, cover) excircle is equipped with the direction pump shaft gets rid of oily structure.
Further, the top of the bearing body is covered by bearing body and is closed, and the diameter of the bearing body capping is outside
Side is socketed with fan guard, and the excircle of the bearing body capping is equipped with the deflation feature stretched out outside the fan guard, the deflation
Component has maze-type structure.
Using the technical solution for filling pump on a kind of RCV of the invention, including cylinder, medium entrance and the equal position of media outlet
In the bottom of the cylinder, the medium entrance is located at the center of the cylinder, and the media outlet deviates in the cylinder
The heart；It is equipped in the cylinder and is connected to the medium entrance, run through the placing chamber of the cylinder vertically, be equipped in the placing chamber
Core packet；The core packet includes the chopped-off head middle section set gradually from bottom to up, N-2 lower part middle section, final stage lower part middle section, centre
It is closed by pump cover at the top of section, final stage top middle section, N-2 top middle section and suction cover, the cylinder；The final stage top
Middle section, N-2 top middle section and the suction cover are linked to be top entirety by more top rods；The chopped-off head middle section, N-2
Lower part middle section, final stage lower part middle section and the interlude are linked to be lower part entirety by more lower part rods；The top is whole
It is bolted between body and the lower part entirety by connection, and is compressed by disk spring.Its technical effect is that: utilize dish
The elastic filtration fraction of spring vibrates, and in the thermal expansion of core packet, the size incrementss of elongation are conceded by disk spring compression,
Increase the stability and efficiency of pump.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that pump is filled on a kind of RCV of the invention.
Fig. 2 is the enlarged diagram of part A in Fig. 1.
Fig. 3 is the enlarged diagram of part B in Fig. 2.
Fig. 4 is the enlarged diagram of C portion in Fig. 1.
Specific embodiment
Referring to Fig. 1, the present inventor in order to preferably understand technical solution of the present invention, is led to below
Specifically embodiment is crossed, and will be described in detail with reference to the accompanying drawings:
Referring to Fig. 1, the centrifugal pump that pump is multistage, vertical bottom sucking, bottom discharge is filled on a kind of RCV of the invention,
Overall structure is using double shell, Drawing-Core, impeller is arranged symmetrically, the structure of water lubriucated bearing.
Pump, including cylinder 100 are filled on a kind of RCV of the invention, medium entrance and media outlet are respectively positioned on the bottom of cylinder 100
Portion, wherein medium entrance is located at the center of cylinder 100, and media outlet deviates the center of cylinder 100.The bottom of medium entrance is equipped with
The bottom of suction flange 101, media outlet is equipped with outlet(discharge) flange 102.
The radially inner side formation of cylinder 100 is connected to medium entrance, the vertical placing chamber for running through cylinder 100.
Be successively arranged from bottom to up in placing chamber 201, eight, chopped-off head middle section lower part middle section 202, final stage lower part middle section 203,
Interlude 204,205, eight, final stage top middle section top middle section 206 and suction cover 207.The top of cylinder 100 passes through pump cover 103
Closing.It is fixed between pump cover 103 and the top surface of cylinder 100 by kingbolt, main nut and washer.
201, eight, chopped-off head middle section lower part middle section 202, final stage lower part middle section 203, interlude 204, final stage top middle section
205, eight top middle section 206 and suction cover 207 form core packet, have pulled core structure between core packet and cylinder 100.Core packet and cylinder
There are annular gaps between body 100.
Interlude 204 is bonded with the inner periphery of cylinder 100, and O is equipped between interlude 204 and the inner periphery of cylinder 100
Shape circle, so that the annular gap between the core packet and cylinder 100 to be divided into the medium up rise channel above interlude 204
100b, and it is located at 204 lower section of interlude, it is connected to the media outlet channel 100a of the media outlet.
The upper end of the upper surface in chopped-off head middle section 201, the upper surface in eight lower parts middle section 202 and final stage lower part middle section 203
A lower part guide vane 21 is fixed each by pin in face.Chopped-off head middle section 201 and corresponding lower part guide vane 21, surround first stage impeller
Space, eight lower parts middle section 202 and final stage lower part middle section 203 and corresponding lower part guide vane 21 are surrounded and are successively set from bottom to up
The eight lower wheel spaces set.
The lower end surface of the lower end surface in final stage top middle section 205, the lower end surface in eight top middle section 206 and suction cover 207 is each
A top guide vane 22,205, eight, final stage top middle section top middle section 206 and suction cover 207 are fixed from by pin, with
Corresponding top guide vane 22 is respectively enclosed to set gradually from bottom to up ten upper wheel spaces.
It, will be in 201, eight, chopped-off head middle section lower part middle section 202, final stage lower part for effective absorbing and absorbing thermal expansion
Section 203 and interlude 204 pass through more lower part rods 23 and are linked to be lower part entirety.
205, eight, final stage top middle section top middle section 206, suction cover 207 are linked to be top by more top rods 24
It is whole.
It is bolted between lower part entirety and top entirety by connection, and is compressed by disk spring 25.
It is vibrated using the elastic filtration fraction of disk spring 25, and in the thermal expansion of core packet, is compressed by disk spring 25
The size incrementss for conceding elongation increase the stability and efficiency of pump.
Pump shaft 3 runs through core packet vertically, and is socketed with 20 impellers, i.e., the first stage impeller 31 that sets gradually from bottom to up,
Nine lower impellers 32 and ten upper impellers 33.First stage impeller 31 corresponds to first stage impeller space, nine lower impellers 32, successively right
The nine lower wheel spaces that should be set gradually from bottom to up, ten upper impellers 33 are corresponding in turn to the upper leaf of ten be arranged from bottom to up
Take turns space.
The radially inner side in eight lower parts middle section 202 and the radially inner side in final stage lower part middle section 203 pass through screw and fix one
A lower impeller ring 212, the radially inner side of lower part corresponding with chopped-off head middle section 201 guide vane 21, and with eight lower parts middle section
The radially inner side of 202 corresponding eight lower part guide vanes 21 passes through screw and is fixed with a lower part guide blade sleeve 211.With final stage
The corresponding lower part guide vane 21 in lower part middle section 203 is clamped with 204 stairstepping of interlude.Lower impeller ring 212 and lower part guide blade sleeve
211 are all made of bearing material, and the cooperation of bearing lubrication is formed with corresponding impeller.
Radially inner side, the radially inner side in eight top middle section 206 and the radial direction of suction cover 207 in final stage top middle section 205
Inside passes through screw and is fixed with a upper impeller ring 222, top corresponding with eight top middle section 206 guide vane 22
Radially inner side, and the radially inner side of top corresponding with suction cover 207 guide vane 22 passes through screw and is fixed with a top
Guide blade sleeve 221.Top corresponding with final stage top middle section 205 guide vane 22 and 204 stairstepping of interlude are clamped.Upper impeller ring
222 and top guide blade sleeve 221 be all made of bearing material, with corresponding impeller formed bearing lubrication cooperation.
The water inlet of first stage impeller 31 and nine lower impellers 32 straight down, the lower impeller of first stage impeller 31 and lowermost end
Between 32, snap ring 35 is equipped between adjacent lower impeller 32.
The water inlet of ten upper impellers 33 straight up, is equipped with snap ring 35 between adjacent upper impeller 33.
Intermediate axle sleeve 34 corresponding with 204 position of interlude is also socketed on pump shaft 3.Under intermediate axle sleeve 34 and top
Impeller 32, i.e., the upper impeller 33 of lower impeller 32 corresponding with final stage lower part middle section 203 and lowermost end, i.e., and in final stage top
Section 205 corresponding upper impellers 33, between also be provided with snap ring 35.
The upper impeller 33 of pump shaft 3, first stage impeller 31, nine lower impellers 32 and ten constitutes rotor part.
The lower ten grades of impellers and ten grades of upper impellers 33 that first stage impeller 31 and nine lower impellers 32 form are symmetrical arranged, pump shaft 3
Axial force straight down, pump shaft 3 operate when be in tension state, be conducive to the stable of pump group.First stage impeller 31 and nine
The lower ten grades of impellers and ten grades of upper impellers 33 that a lower impeller 32 forms are cooperated at the cooperation between pump shaft 3 using stepped ramp type, are had
Effect ground reduces difficult installation and degree and shortens the set-up time.
The radially inner side in chopped-off head middle section 201 is fixed with a lower guide bearing 41.Between lower guide bearing 41 and chopped-off head middle section 201
Cooperated by step surface.The sealing ring surface 311 of first stage impeller 31 makes the sealing of first stage impeller 31 along the axial elongation of pump shaft 3
Annular gap is formed between anchor ring 311 and the inner periphery of lower guide bearing 41, is the lubrication face of lower guide bearing 41.
The bottom surface of lower guide bearing 41 is coaxially fixed with water-inlet horn 42.Lower guide bearing 41, water-inlet horn 42 and chopped-off head middle section
It is fixed along vertical direction by stud between 201, the inner periphery of 42 front end of water-inlet horn is equipped with the water inlet with first stage impeller 31
The corresponding deflector 421 of mouth, guarantees the stabilization of the rotation center of pump shaft 3.O is equipped between lower guide bearing 41 and chopped-off head middle section 201
Shape circle.
There are gap between chopped-off head middle section 201 and lower guide bearing 41, on chopped-off head middle section 201 there are for medium from first stage impeller
31 water outlet flows to the lubrication channel 201a in gap between chopped-off head middle section 201 and lower guide bearing 41.
It also is provided with being connected to the diameter in gap between its lubrication face and chopped-off head middle section 201 and lower guide bearing 41 on lower guide bearing 41
To lubrication channel 411.
Water-inlet horn 42, lower guide bearing 41, chopped-off head middle section 201 and corresponding lower part guide vane and the formation of first stage impeller 31
The lower guide bearing lubrication system of pump is filled on RCV.
Corresponding with first stage impeller 31 lower guide bearing 41 uses 31 water outlet diversion of first stage impeller, the cooperation of first stage impeller 31 compared with
Long lower guide bearing 41 is the water lubriucated bearing that vertical direction lengthens, and increases the operation stability of pump.
The radially inner side of interlude 204 is equipped with intermediate guide bearing 43.Between intermediate guide bearing 43 and the top surface of interlude 204
Step is fixed with merga pass stud.It is formed between annular between the inner periphery of intermediate guide bearing 43 and the excircle of intermediate axle sleeve 34
Gap is the lubrication face of intermediate guide bearing 43.There are annular gap, intermediate guide bearings between intermediate guide bearing 43 and interlude 204
O-ring is equipped between 43 and the radial direction of interlude 204.
Top guide bearing 44 is fixed on the inner periphery of pump cover 103 and is supported by the top surface of suction cover 207, and covers on pump shaft 3
Fixed Upper shaft sleeve 36 corresponding with 44 position of top guide bearing is connect, there are annulars between Upper shaft sleeve 36 and the inner periphery of top guide bearing 44
Gap forms the lubrication face of top guide bearing 44.
It is equipped with mechanical seal 5 between pump cover 103 and pump shaft 3, passes through stud between mechanical seal 5 and the top surface of pump cover 103
It is fixed with nut.The mechanical seal is the double mechanical seal for being equipped with sealing heat exchanger.
Interlude 204 is equipped with the water outlet of the lower impeller 32 of connection top and the medium mistake of medium up rise channel 100b
Circulation road 204a, and it is connected to the water outlet of the upper impeller 33 of lowermost end and the medium back flow channel of media outlet channel 100a
204b；
The contact that suction cover 207 is equipped with the water inlet of the upper impeller 33 of connection medium up rise channel 100b and top is logical
Road 207a.
There are the balance pipes for being connected to 31 water outlet of 44 upper surface of top guide bearing and first stage impeller on cylinder 100 for pump cover 103
Road 100c.
Medium passes through first stage impeller 31, and the transmission of nine grades of lower impellers 32 rises logical by medium flow channels 204a, medium
Road 100b, service channel 207a reach the water inlet of the upper impeller 33 of top, and the transmission of impeller 33 is gone up via ten grades, via
Medium back flow channel 204b and media outlet channel 100a is discharged from media outlet.
The radial outside of pump cover 103 is equipped with corresponding with balance pipeline 100c first and blocks flange 104 and the second plugging method
Orchid 105, first blocks flange 104 is fixed by stud and nut and pump cover 103, and first blocks between flange 104 and pump cover 103
Equipped with O-ring.It is fixed between second closure flange 105 and pump cover 103 by plug, stud and nut.Second blocks flange 105
O-ring is equipped between pump cover 103.
The radial outside of mechanical seal 5 is equipped with bearing body support frame 61, and bearing body support frame 61 and the top surface of pump cover 103 pass through pin
Positioning.
Bearing body support frame 61 is fixedly arranged above bearing body 62.The inner periphery of bearing body 62 is equipped with ball bearing 63, ball
The radially inner side of bearing 63, be equipped with equipped with the bearing holder (housing, cover) 64 being sleeved and fixed with pump shaft 3, inside bearing holder (housing, cover) 64 vertical lubricating oil into
Enter channel 641, the excircle of bearing body 62 is equipped with lubricating oil return pipeline 621, it is empty that lubricating oil storage is equipped with inside bearing body 62
Between 622, lubricating oil enters channel 641 and is connected to lubricating oil memory space 622 and ball bearing with lubricating oil return pipeline 621
63, lubrication oil circulation pipeline is consequently formed.Entire bearing body 62 is designed to the knot with oil storage function by such design
Structure avoids the excessively high problem of generated temperature under not pre-lubrication dry grinding state of ball bearing 63.
Around the excircle of bearing body 62 and the excircle of lubricating oil memory space 622, it is equipped with radiating rib plate 623,
While increasing by 62 rigidity of bearing body, increase heat dissipation area, radiates convenient for bearing body 62.
The top of bearing body 62 is socketed with fan guard by 65 closing of bearing body capping, the radial outside of bearing body capping 65
66, it is fixed between fan guard 66 and bearing body capping 65 by stud, the excircle of bearing body capping 65, which is equipped with, stretches out fan guard
Deflation feature 651 outside 66.Fan 67 corresponding with 66 position of fan guard is arranged at 3 top of pump shaft.Fan 67 can take away heat, nothing
It need in addition add cooling water cooling.
The sharp hook that 64 excircle lower end of bearing holder (housing, cover) is equipped with direction pump shaft 3 gets rid of oily structure 643, can be rotated by pump shaft 3 by axis
It holds the lubricating oil that the lubricating oil in body 62 is got rid of into bearing holder (housing, cover) 64 and enters channel 641, then flow to 63 top of ball bearing, from bottom to top
It is lubricated to ball bearing 63.
Deflation feature 651 in bearing body capping 65, has maze-type structure, is reliably prevented from moisture, dust etc.
Pollutant enters bearing body 62, also can be reduced the volatilization of lubricating oil.
Bearing body 62, ball bearing 63, bearing holder (housing, cover) 64, bearing body capping 65 and fan 67 constitute and fill pump on RCV
Bearing body component.
In accident conditions, pump is filled on a kind of RCV of the invention can be without pre-lubrication quick start, and can be in top guide bearing
44, lower guide bearing 41, intermediate guide bearing 43 and ball bearing 63 do not operate normally again plus in the case where lubricant in two years.
The top of pump shaft 3, is driven by induction alternating current (AC) motor, intermediate using band between pump shaft 3 and induction alternating current (AC) motor
The shaft coupling 39 of short axle, and mechanical seal 5 can be repaired and be replaced when not dismantling induction alternating current (AC) motor.
Top guide bearing 44, intermediate guide bearing 43, lower guide bearing 41 are all made of water lubriucated bearing, and preferably WR525 profile shaft is held, energy
The high temperature for bearing 135 DEG C, using pumped (conveying) medium self-lubricating.
The axial force automatic balancing function of pump shaft 3, to guarantee to fill the full flow model of pump operation on a kind of RCV of the invention
In enclosing, the axial thrust of pump is in a basic balance, to keep 63 axial load of ball bearing in bearing body 62 sufficiently small to meet and make
Use the service life.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (10)
1. fill pump, including cylinder on a kind of RCV, medium entrance and media outlet are respectively positioned on the bottom of the cylinder, the medium
Import is located at the center of the cylinder, and the media outlet deviates the center of the cylinder；It is equipped with and is given an account of in the cylinder
Matter inlet communication runs through the placing chamber of the cylinder vertically, is equipped with core packet in the placing chamber；It is characterized by:
The core packet include the chopped-off head middle section set gradually from bottom to up, N-2 lower part middle section, final stage lower part middle section, interlude,
It is closed by pump cover at the top of final stage top middle section, N-2 top middle section and suction cover, the cylinder；
Final stage top middle section, N-2 top middle section and the suction cover are linked to be top entirety by more top rods；
The chopped-off head middle section, N-2 lower part middle section, final stage lower part middle section and the interlude are connected by more lower part rods
At lower part entirety；
It is bolted between the whole and described lower part entirety in the top by connection, and is compressed by disk spring.
2. filling pump on a kind of RCV according to claim 1, it is characterised in that: the upper surface in the chopped-off head middle section, N-2
The upper surface in the upper surface in lower part middle section and final stage lower part middle section fixes a lower part guide vane, surrounds a chopped-off head
Wheel space and the N-1 set gradually from bottom to up lower wheel spaces；
The lower end surface of the lower end surface in final stage top middle section, the lower end surface in N-2 top middle section and the suction cover is fixed
One top guide vane surrounds the N number of upper wheel space set gradually from bottom to up；
The pump shaft runs through the core packet vertically, and is socketed with first stage impeller corresponding with the first stage impeller space, with N-1
The corresponding N-1 lower impeller of lower wheel space, and N number of upper impeller corresponding with N number of upper wheel space；
The water inlet of the first stage impeller and N-1 lower impellers is downward, and the water inlet of N number of upper impeller is upward.
3. filling pump on a kind of RCV according to claim 2, it is characterised in that: the radially inner side in final stage lower part middle section
A lower impeller ring is respectively and fixedly provided with the radially inner side in N-2 lower part middle section；
The radially inner side of lower part guide vane corresponding with the chopped-off head middle section, N-2 lower part corresponding with N-2 lower part middle section
The radially inner side of guide vane is respectively and fixedly provided with a lower part guide blade sleeve, lower part corresponding with final stage lower part middle section guide vane and it is described in
Between section stairstepping be clamped；
Radially inner side, the radially inner side in N-2 top middle section and the radially inner side of the suction cover in final stage top middle section
It is respectively and fixedly provided with a upper impeller ring；
The radially inner side of N-2 top guide vane corresponding with N-2 top middle section and the corresponding top of the suction cover
The radially inner side of guide vane is respectively and fixedly provided with a top guide blade sleeve；Top corresponding with final stage top middle section guide vane and it is described in
Between section stairstepping be clamped.
4. filling pump on a kind of RCV according to claim 2, it is characterised in that: the chopped-off head middle section and the first stage impeller
Between be equipped with the lower guide bearing fixed with the inner periphery in the chopped-off head middle section；It is equipped with and institute between the interlude and the pump shaft
State the fixed intermediate guide bearing of the inner periphery of interlude；Between the pump cover and the pump shaft, equipped with the inner circle with the pump cover
The top guide bearing that week is fixed；
Annular gap between the core packet and the cylinder is divided into the medium above the interlude by the interlude
Rising passway is connected to the media outlet channel of the media outlet with below the interlude；
The interlude is equipped with the water outlet of lower impeller of connection top and the medium of the medium up rise channel crosses circulation
Road, and it is connected to the water outlet of the upper impeller of lowermost end and the medium back flow channel of the media outlet channel；
The suction cover is equipped with the service channel for being connected to the water inlet of upper impeller of the medium up rise channel and top.
5. filling pump on a kind of RCV according to claim 4, it is characterised in that: the sealing ring surface of the first stage impeller and institute
State the lubrication face that the lower guide bearing is formed between the inner periphery of lower guide bearing；
There are the lubrication channels for the water outlet for being connected to the first stage impeller on the chopped-off head middle section；
The lower guide bearing is equipped with the radial lubrication channel for being connected to the lubrication channel and the lubrication face.
6. filling pump on a kind of RCV according to claim 5, it is characterised in that: the bottom surface of the lower guide bearing is coaxially fixed
Have water-inlet horn, fixed along vertical direction between the lower guide bearing, the water-inlet horn and the chopped-off head middle section, it is described into
The inner periphery of water loudspeaker front end is equipped with the corresponding deflector of water inlet of the first stage impeller.
7. filling pump on a kind of RCV according to claim 2, it is characterised in that: be equipped between the pump cover and the pump shaft
Mechanical seal, the mechanical seal are double mechanical seal.
8. filling pump on a kind of RCV according to claim 2, it is characterised in that: the top surface of the pump cover is fixed with bearing body
Bracket, the bearing body support frame are fixedly arranged above bearing body, and the inner periphery of the bearing body is equipped with ball bearing；
The radially inner side of the ball bearing, equipped with the bearing holder (housing, cover) being sleeved and fixed with the pump shaft；It is equipped with inside the bearing holder (housing, cover)
Vertical lubricating oil enters channel；The excircle of the bearing body is equipped with lubricating oil return pipeline；It is equipped with inside the bearing body
Lubricating oil memory space；The lubricating oil enters channel and is connected to the lubricating oil memory space with the lubricating oil return pipeline
With the ball bearing.
9. filling pump on a kind of RCV according to claim 8, it is characterised in that: around the excircle of the bearing body, and
The excircle of the lubricating oil memory space is equipped with radiating rib plate, and the lower end of the bearing holder (housing, cover) excircle, which is equipped with, is directed toward the pump
The sharp hook of axis gets rid of oily structure.
10. filling pump on a kind of RCV according to claim 8, it is characterised in that: pass through bearing body above the bearing body
Capping closing, the radial outside of the bearing body capping are socketed with fan guard, and the excircle of the bearing body capping, which is equipped with, to be stretched out
Deflation feature outside the fan guard, the deflation feature have maze-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276983.4A CN109899296A (en) | 2019-04-08 | 2019-04-08 | Pump is filled on a kind of RCV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276983.4A CN109899296A (en) | 2019-04-08 | 2019-04-08 | Pump is filled on a kind of RCV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109899296A true CN109899296A (en) | 2019-06-18 |
Family
ID=66954977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910276983.4A Pending CN109899296A (en) | 2019-04-08 | 2019-04-08 | Pump is filled on a kind of RCV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109899296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550909A (en) * | 2021-08-20 | 2021-10-26 | 镇江福泰克流体技术有限公司 | Pump body structure for ultra-high temperature high-speed alloy pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2786321Y (en) * | 2005-03-30 | 2006-06-07 | 上海山川泵业制造有限公司 | Low-noise tourmaline ecological water purifying pump |
| CN102606484A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Charging pump for nuclear power station |
| CN209925223U (en) * | 2019-04-08 | 2020-01-10 | 上海阿波罗机械股份有限公司 | RCV charging pump |
-
2019
- 2019-04-08 CN CN201910276983.4A patent/CN109899296A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2786321Y (en) * | 2005-03-30 | 2006-06-07 | 上海山川泵业制造有限公司 | Low-noise tourmaline ecological water purifying pump |
| CN102606484A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Charging pump for nuclear power station |
| CN209925223U (en) * | 2019-04-08 | 2020-01-10 | 上海阿波罗机械股份有限公司 | RCV charging pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550909A (en) * | 2021-08-20 | 2021-10-26 | 镇江福泰克流体技术有限公司 | Pump body structure for ultra-high temperature high-speed alloy pump |
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