CN205618368U - Horizontal double -shell emergency feedwater pump - Google Patents
Horizontal double -shell emergency feedwater pump Download PDFInfo
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- CN205618368U CN205618368U CN201620219970.5U CN201620219970U CN205618368U CN 205618368 U CN205618368 U CN 205618368U CN 201620219970 U CN201620219970 U CN 201620219970U CN 205618368 U CN205618368 U CN 205618368U
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Abstract
The utility model relates to a horizontal double -shell emergency feedwater pump. The internal pump core of installing of this pump barrel is installed on the barrel and is taken a percentage, and intake end lid and pump cover, pump core and pump cover connection are connected respectively to the barrel both ends to take out with integrative dismantlement of pump cover, taking a percentage and taking a percentage for the chopped -off head, the input of taking a percentage is connected with the suction casing, and the output is connected bearing parts respectively and is driven end, non - end, the motor of driving of bearing parts, bearing parts drives the interior installation cylindrical roller bearing of end, and cylindrical roller bearing and angular contact ball bearing are installed in driving the end to the bearing parts non -, and the cylindrical roller bearing all is connected with with angular contact ball bearing and is used for lubricated disc, and bearing parts drives the end, and not it all sets up the pressure balance part to drive the end with bearing parts, the last backpitch groove structure that sets up of balance drum. The utility model discloses structure safety, operation are reliable, easy dismounting, energy -efficient, whole anti -seismic performance are good, can satisfy nuclear power plant's high temperature, high pressure, high irradiation, thermal shock, contain the operating mode requirement of various harshnesses such as impurity, antidetonation.
Description
Technical field
This utility model relates to a kind of horizontal multi-stage, radially subdivision, two ends support double casing volute pump, especially a kind of suitable
For the emergency feedwater pump using Hua Longyi nuclear power technology to use.
Background technology
Use the emergency feedwater pump that the power plant of " No. Hua Longyi " nuclear power technology uses, be the emergency feedwater system of such nuclear power plant
One of visual plant in system (ASG).Aforementioned emergency feedwater pump is 3 grades of pumps of nuclear safety, is positioned in safe Factory Building, Main Function
For: fetch water from emergency feedwater supply system water tank, inject the steam generator of ASG emergency feedwater pump column；Machine after each shutdown
Before group starts, carry out wet preservation and water-filling first to steam generator water-filling；After unit starting, in primary pipe rupture, main steaming
When vapour line fracture, 3 class transient states, steam generator is carried out water-filling to ensure the safe operation of nuclear power generating sets.
The deficiency that current domestic common water pump exists:
First: radially subdivision multilevel barrel bag formula centrifugal pump dismounting, installation need dismounting to import and export flange, motor, or need
First to dismantle one end bearing housing, it is impossible to entirety is loosed core.Cannot quickly install and keep in repair, directly influence the peace in power station
Complete and maintenance maintenance personnel's is healthy；
Second: in the case of external source cooling water is not the most provided, need to meet the temperature fortune of the highest 60 DEG C of entrance medium
OK, it is impossible to meet the security reliability of bearing and motor；
3rd: under harsh radiation environment, it is impossible to ensure the integrity of pressure boundary；
4th: after violent earthquake, it is impossible to ensure structural intergrity and the performability of pump group.
Utility model content
The purpose of this utility model is to provide a kind of structural safety, emergency feedwater pump reliable, efficient, and this pump disclosure satisfy that
The requirements of emergency feedwater pump needed for Hua Longyi nuclear power technology.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: horizontal Double-casing emergency feedwater pump, in cylinder
Being provided with pump core, cylinder is provided with tap, the two ends of cylinder connect suction end cap and pump cover respectively, it is characterized in that: pump core with
Pump cover connects, and extracts out with pump cover integrated removal；Tap is chopped-off head tap, and tap input is connected with suction casing, and outfan divides
Lian Jie parts of bearings drive end, parts of bearings is non-drives end, motor；Parts of bearings installs cylinder roller bearing, bearing portion in driving end
Part is non-drives installation cylinder roller bearing and angular contact ball bearing in end, and cylinder roller bearing and angular contact ball bearing are respectively connected with use
In the disc of lubrication, parts of bearings drives end and is respectively provided with pressure balance component with the non-end that drives of parts of bearings；Arrange anti-on balancing drum
Helical groove structure.
Further, described pump core include parts of bearings drive end, suction casing, first stage impeller, stage casing, stator, secondary impeller,
The non-end that drives of pump shaft, final stage stator, balance set, balancing drum, parts of bearings, pump shaft is positioned at the center of pump core, the anterior connection of pump shaft
Parts of bearings drives end, and pump shaft is positioned at that the position of cylinder is sequentially connected with suction casing, first stage impeller, stage casing, secondary impeller, final stage are led
Connecting stator in leaf, balancing drum, first stage impeller and secondary impeller, connect balance set outside balancing drum, the rear portion of pump shaft connects bearing
Parts are non-drives end.
Further, described cylinder solid forging, increase wall thickness design, footing is provided with reinforcement gusset；Mechanical seal chamber with
Pump cover Integral design, and sealing leakage recovery line interface is set.
Further, the mounting means of described angular contact ball bearing is back-to-back installation.
Further, described pressure balance component includes pressure compensation opening and venting plug, and pressure compensation opening is arranged at bearing
Parts drive on end and the non-roof driving end of parts of bearings, and cavity mechanical oil seal and cylinder roller bearing formed is with venting plug phase
Even.
Further, described pump cover is connected with cylinder by pressure-bearing stud.
Further, in described pump, all non-metal workpieces are resistance to exposed material.
Further, described non-metal workpiece includes O, wound gasket.
Further, described resistance to exposed material includes the one in EP rubbers or nitrile rubber or graphite material or several
Kind.
This utility model has following several respects distinguishing feature:
1. in the case of not removing motor, importing and exporting pipeline, pump core parts (can be included suction casing, discharge when maintenance
Section, impeller at different levels, stator at different levels, stage casing at different levels, seal member, parts of bearings, pump cover, axle etc.) overall extraction in cylinder, turn
Move on to the maintenance of non-irradiation safety zone, it is possible to use complete pump core components spare part integral replacing, it is achieved Quick overhaul；
2. parts of bearings and motor are used pumped medium to carry out water-cooled by the method using chopped-off head tap；
3. bearing uses the design that radial force, axial force consider respectively, and parts of bearings uses two ends cylinder Roller Shaft
Holding the angular contact ball bearing of the back-to-back installation coordinating anti-drive end, radial force is born by the combination of two ends cylinder roller bearing, residual
Remaining axial force is born by angular contact ball bearing, and such method of salary distribution reduces the complexity of shaft strength, considerably reduces
Bearing temperature rise, mode pump bearing and motor cooled down in conjunction with pump chopped-off head tap, it is ensured that in pumped medium inlet temperature
In the case of 60 DEG C, bearing and motor still can run well；
4. bearing uses disc mode to lubricate, and arranges pressure balance component, prevents lubricating oil from producing because of air pressure difference
Leakage；
5. designing reverse acting spiral groove structure at balancing drum, the pumping force produced in operating decreases high-pressure side to low-pressure end
Volumetric loss, improves pump group efficiency；
6. in pump, all non-metal workpieces (O, wound gasket etc.) all use resistance to exposed material, such as EP rubbers, butyronitrile
Rubber, graphite material etc., it is ensured that equipment pressure boundary integrity under radiation environment and operational reliability；
7. the pressure-containing member such as cylinder, pump cover, stage casing, on the basis of meeting bearing capacity, considers the most emphatically whole
The rigid design of pump group, has all carried out particular design at wall thickness, reinforcement etc., has added the carrying of the pump housing, shock resistance.
Accompanying drawing illustrates:
Fig. 1: horizontal Double-casing emergency feedwater pump cross-sectional view.
Fig. 2: horizontal Double-casing emergency feedwater pump entirety is loosed core schematic diagram.
Fig. 3: horizontal Double-casing emergency feedwater pump chopped-off head tap schematic diagram.
Fig. 4: horizontal Double-casing emergency feedwater pump bearing modular construction schematic diagram.
Fig. 5: horizontal Double-casing emergency feedwater pump balancing drum structural representation.
In figure: parts of bearings drives end 1, end cap 2, cylinder 3, suction casing 4, first stage impeller 5, stage casing 6, stator 7, secondary impeller
8, pump shaft 9, final stage stator 10, balance set 11, balancing drum 12, pump cover 13, pressure-bearing stud 14, parts of bearings is non-drives end 15, cylinder
Roller bearing 16, angular contact ball bearing 17, disc 18, tap 19, pressure compensation opening 20, venting plug 21, mechanical oil seal 22.
Detailed description of the invention:
Below in conjunction with the accompanying drawings this utility model is described in further details.
As it is shown in figure 1, the horizontal Double-casing emergency feedwater pump that this utility model provides.This pump is horizontal multi-stage, radially cuts open
Point, first-stage double-absorption, tubular-bag tyep centrifugal pump, pump core is installed in cylinder 3, cylinder 3 is provided with tap 19, the two ends of cylinder 3 are divided
Lian Jie not suck end cap 2 and pump cover 13, pump cover 13 is connected with cylinder 3 by pressure-bearing stud 14.Pump core is connected with pump cover 13, and with
Pump cover 13 integrated removal is extracted out；Tap 19 is chopped-off head tap, and tap 19 input is connected with suction casing 4, and outfan connects respectively
Parts of bearings drives end 1, parts of bearings is non-drives end 15, motor；Parts of bearings installs cylinder roller bearing 16, bearing portion in driving end 1
Part is non-drives installation cylinder roller bearing 16 and angular contact ball bearing 17 in end 15, and the mounting means of described angular contact ball bearing 17 is
Back-to-back installation, cylinder roller bearing 16 and angular contact ball bearing 17 are respectively connected with the disc 18 for lubrication, parts of bearings
Drive end 1 drive end 15 non-with parts of bearings and be respectively provided with pressure balance component；Backpitch groove structure is set on balancing drum 12.
Described pump core includes that parts of bearings drives end 1, suction casing 4, first stage impeller 5, stage casing 6, stator 7, secondary impeller 8, pump
The non-end 15 that drives of axle 9, final stage stator 10, balance set 11, balancing drum 12, parts of bearings, pump shaft 9 is positioned at the center of pump core, pump shaft 9
The anterior parts of bearings that connects drives end 1, pump shaft 9 be positioned at the position of cylinder 3 be sequentially connected with suction casing 4, first stage impeller 5, stage casing 6,
Connecting stator 7 in secondary impeller 8, final stage stator 10, balancing drum 12, first stage impeller 5 and secondary impeller 8, balancing drum 12 is outer to be connected
Balance set 11, the rear portion of pump shaft 9 connects that parts of bearings is non-drives end 15.
Described pressure balance component includes pressure compensation opening 20 and venting plug 21, and pressure compensation opening 20 is arranged at parts of bearings
Drive on end 1 roof driving end 15 non-with parts of bearings, the same aerofluxus of cavity that mechanical oil seal 22 and cylinder roller bearing 16 are formed
Plug 21 is connected.
The solid forging of described cylinder 3, increases wall thickness design, and footing is provided with reinforcement gusset；Mechanical seal chamber is made with pump cover 13
It is integrated design, and sealing leakage recovery line interface is set.
As in figure 2 it is shown, this pump without mobile motor and imports and exports pipeline, after disassembling pressure-bearing stud 14, can be by institute
Pump core parts entirety is had to loose core；Pump core parts can carry out integral replacing, it is achieved rapid-maintenance；Pump core under simultaneously dismantling is permissible
Transport radiation property Factory Building to dismount, it is ensured that the convenience of power plant's maintenance and the safety of personnel.
As it is shown on figure 3, owing to this pump scene does not has external source to cool down water, for ensureing in the case of pump intake medium temperature 60 DEG C
Unit can design pump chopped-off head tap with steady running, and the heat exchange for pump bearing and motor uses.
As shown in Figure 4, bearing uses the cylinder roller bearing 16 at two ends to coordinate the corner connection of back-to-back installation of anti-drive end
Touching ball bearing 17, radial force is born by cylinder roller bearing 16 combination, and residual axial force is born by angular contact ball bearing 17；Bearing
Disc 18 is used to lubricate；Pressure balance component is set, prevents lubricating oil from producing leakage because of air pressure difference；Parts of bearings uses head
The water-cooling structure of level tap, it is ensured that 60 DEG C of safe and stable operations of inlet temperature.
As it is shown in figure 5, design reverse acting spiral groove structure at balancing drum 12, the pumping force produced in operating decreases high-pressure side
To the volumetric loss of low-pressure end, improve pump group efficiency.
Additionally, all non-metal workpieces in pump, such as: O, wound gasket all use resistance to exposed material, such as EP rubbers, fourth
Nitrile rubber, graphite material, it is ensured that equipment pressure boundary integrity under radiation environment and operational reliability；Cylinder 3, pump cover
13, the pressure-containing member such as stage casing 6, on the basis of meeting bearing capacity, considers the most emphatically the rigid design of whole pump group,
Wall thickness, reinforcement etc. have all carried out particular design, add the carrying of the pump housing, shock resistance.
Above content is to combine the further description that this utility model is done by optimal technical scheme, it is impossible to assert real
It is only limitted to these explanations with novel being embodied as.For this utility model person of an ordinary skill in the technical field,
On the premise of design of the present utility model, it is also possible to make simple deduction and replacement, all should be considered as this practicality new
The protection domain of type.
Claims (8)
- The most horizontal Double-casing emergency feedwater pump, is provided with pump core, cylinder (3) is provided with tap (19), cylinder in cylinder (3) (3) two ends connect suction end cap (2) and pump cover (13) respectively, it is characterized in that: pump core is connected with pump cover (13), and and pump cover (13) integrated removal is extracted out；Tap (19) is chopped-off head tap, and tap (19) input is connected with suction casing (4), and outfan is respectively Connect that parts of bearings drives end (1), parts of bearings is non-drives end (15), motor；Parts of bearings installs cylinder roller bearing in driving end (1) (16), parts of bearings is non-drives installation cylinder roller bearing (16) and angular contact ball bearing (17), cylinder roller bearing in end (15) (16) being respectively connected with the disc (18) for lubrication with angular contact ball bearing (17), parts of bearings drives end (1) and parts of bearings The non-end (15) that drives is respectively provided with pressure balance component；Backpitch groove structure is set on balancing drum (12).
- Horizontal Double-casing emergency feedwater pump the most according to claim 1, is characterized in that: described pump core includes that parts of bearings drives End (1), suction casing (4), first stage impeller (5), stage casing (6), stator (7), secondary impeller (8), pump shaft (9), final stage stator (10), The non-end (15) that drives of balance set (11), balancing drum (12), parts of bearings, pump shaft (9) is positioned at the center of pump core, the front portion of pump shaft (9) Connect parts of bearings and drive end (1), pump shaft (9) be positioned at the position of cylinder (3) be sequentially connected with suction casing (4), first stage impeller (5), The upper connection of stage casing (6), secondary impeller (8), final stage stator (10), balancing drum (12), first stage impeller (5) and secondary impeller (8) is led Leaf (7), balancing drum (12) connects outward balance set (11), and the rear portion of pump shaft (9) connects that parts of bearings is non-drives end (15).
- Horizontal Double-casing emergency feedwater pump the most according to claim 1, is characterized in that: described angular contact ball bearing (17) Mounting means is back-to-back installation.
- Horizontal Double-casing emergency feedwater pump the most according to claim 1, is characterized in that: described pressure balance component includes pressure Dynamic balance hole (20) and venting plug (21), pressure compensation opening (20) is arranged at parts of bearings and drives end (1) and parts of bearings is non-drives end (15), on roof, the same venting plug of the cavity (21) that mechanical oil seal (22) is formed with cylinder roller bearing (16) is connected.
- 5., according to the arbitrary described horizontal Double-casing emergency feedwater pump of Claims 1-4, it is characterized in that: described pump cover (13) leads to Cross pressure-bearing stud (14) to be connected with cylinder (3).
- 6., according to the arbitrary described horizontal Double-casing emergency feedwater pump of Claims 1-4, it is characterized in that: all non-in described pump Metal parts is resistance to exposed material.
- Horizontal Double-casing emergency feedwater pump the most according to claim 6, is characterized in that: described non-metal workpiece includes O type Circle, wound gasket.
- Horizontal Double-casing emergency feedwater pump the most according to claim 6, is characterized in that: described resistance to exposed material includes second third One or more in rubber or nitrile rubber or graphite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620219970.5U CN205618368U (en) | 2016-03-22 | 2016-03-22 | Horizontal double -shell emergency feedwater pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620219970.5U CN205618368U (en) | 2016-03-22 | 2016-03-22 | Horizontal double -shell emergency feedwater pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205618368U true CN205618368U (en) | 2016-10-05 |
Family
ID=57031950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620219970.5U Active CN205618368U (en) | 2016-03-22 | 2016-03-22 | Horizontal double -shell emergency feedwater pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205618368U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514384A (en) * | 2017-09-27 | 2017-12-26 | 上海阿波罗机械股份有限公司 | Emergency feedwater pump |
| CN109372792A (en) * | 2018-12-24 | 2019-02-22 | 淄博匠心防腐耐磨材料有限公司 | Horizontal pump is lubricated from medium |
| CN112412807A (en) * | 2019-08-20 | 2021-02-26 | 上海连成（集团）有限公司 | Double-suction volute core-pulling type long-shaft pump |
| CN112628146A (en) * | 2020-12-31 | 2021-04-09 | 上海凯泉泵业（集团）有限公司 | Multistage double suction pump with vertical structure |
| CN114909293A (en) * | 2022-05-20 | 2022-08-16 | 宜昌市西峡泵业有限公司 | Double-suction high-lift balance type odd-level centrifugal pump and operation method |
| CN114909294A (en) * | 2022-05-20 | 2022-08-16 | 宜昌市西峡泵业有限公司 | Double-suction high-lift balanced even-stage centrifugal pump and operation method |
-
2016
- 2016-03-22 CN CN201620219970.5U patent/CN205618368U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514384A (en) * | 2017-09-27 | 2017-12-26 | 上海阿波罗机械股份有限公司 | Emergency feedwater pump |
| CN109372792A (en) * | 2018-12-24 | 2019-02-22 | 淄博匠心防腐耐磨材料有限公司 | Horizontal pump is lubricated from medium |
| CN112412807A (en) * | 2019-08-20 | 2021-02-26 | 上海连成（集团）有限公司 | Double-suction volute core-pulling type long-shaft pump |
| CN112412807B (en) * | 2019-08-20 | 2024-05-07 | 上海连成（集团）有限公司 | Double-suction volute core-pulling type long-axis pump |
| CN112628146A (en) * | 2020-12-31 | 2021-04-09 | 上海凯泉泵业（集团）有限公司 | Multistage double suction pump with vertical structure |
| CN114909293A (en) * | 2022-05-20 | 2022-08-16 | 宜昌市西峡泵业有限公司 | Double-suction high-lift balance type odd-level centrifugal pump and operation method |
| CN114909294A (en) * | 2022-05-20 | 2022-08-16 | 宜昌市西峡泵业有限公司 | Double-suction high-lift balanced even-stage centrifugal pump and operation method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |