CN109899294A - A kind of double Shell multistage low pressure safety injection pump - Google Patents
A kind of double Shell multistage low pressure safety injection pump Download PDFInfo
- Publication number
- CN109899294A CN109899294A CN201910276452.5A CN201910276452A CN109899294A CN 109899294 A CN109899294 A CN 109899294A CN 201910276452 A CN201910276452 A CN 201910276452A CN 109899294 A CN109899294 A CN 109899294A
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- cylinder
- pump
- free end
- low pressure
- double shell
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Links
- 238000002347 injection Methods 0.000 title claims abstract description 30
- 239000007924 injection Substances 0.000 title claims abstract description 30
- 239000000411 inducer Substances 0.000 claims description 11
- 238000005461 lubrication Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of double Shell multistage low pressure safety injection pumps, including cylinder, middle section component, pump shaft, drive end bearing, driving terminal envelope, rotor part, balancing drum, free end sealed letter body, free end bearing and free terminal envelope, the cylinder is laterally arranged, the open at one end of the cylinder is provided with pump cover, another end opening is provided with suction casing component, is provided with suction passage in the suction casing component；Inlet and outlet adapter tube is provided on the lateral wall of the cylinder；The middle section component is arranged in the cylinder, and the middle section component and the cylinder form double Shell；The pump shaft is laterally arranged, and the pump shaft sequentially passes through suction casing component, middle section component and pump cover.Double Shell multistage low pressure safety injection pump of the invention, it is easy to maintenance, it runs smoothly, can satisfy safe operation.
Description
Technical field
The present invention relates to a kind of double Shell multistage low pressure safety injection pumps.
Background technique
Low pressure safety injection pump is applied to the imperial No.1 heap-type nuclear power station of China, is the safe two stage pump of Nuclear Power Station, undertakes in peace injection molding
Material-changing water tank (IRWST) water intaking (intake is provided with strainer) out of containment under formula, and it is cold to be injected into corresponding reactor
But it cold section of agent system (RCP) loop or the function of hot arc and fetches water under Residual heat removal mode from the hot arc of RCP, then will
Cold section of function of corresponding RCP loop is injected by the cooling water of heat exchanger.
The structure of current existing low pressure safety injection pump is not able to satisfy working condition requirement used in the pump, interface load and antidetonation and wants
It asks, no heat shielding is cooling, cannot achieve the requirement run under accident conditions, existing low pressure safety injection pump is not also able to satisfy the water of the pump
Power performance requirement, it cannot be guaranteed that the safe operation of pump.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies of existing technologies, a kind of double Shell multistage low pressure safety injection pump is provided, is repaired
It is convenient, it runs smoothly, can satisfy safe operation.
Realizing the technical solution of above-mentioned purpose is: a kind of double Shell multistage low pressure safety injection pump, including cylinder, middle portion
Part, pump shaft, drive end bearing, driving terminal envelope, rotor part, balancing drum, free end sealed letter body, free end bearing and freedom
Terminal envelope, in which:
The cylinder is laterally arranged, and the open at one end of the cylinder is provided with pump cover, and another end opening is provided with suction casing
Component is provided with suction passage in the suction casing component；
Inlet and outlet adapter tube is provided on the lateral wall of the cylinder；
The middle section component is arranged in the cylinder, and the middle section component and the cylinder form double Shell；
The pump shaft is laterally arranged, and the pump shaft sequentially passes through suction casing component, middle section component and pump cover；
The pump shaft extends the both ends outside the cylinder and respectively drives end and free end, and the driving end and institute
It is adjacent to state suction casing component；
The drive end bearing and driving terminal envelope are separately positioned on the driving end of the pump shaft, and the driving terminal seals
It is connected with the suction casing component, the end at the driving end of the pump shaft is provided with shaft coupling, and driving is arranged on the shaft coupling
Hold fan；
The rotor part is set on the pump shaft, and is located in the middle section component, and the rotor part includes luring
Guide wheel and three-level impeller, the inducer are adjacent with the suction casing component；
The balancing drum is set on the pump shaft, and is located in the pump cover；
The free end sealed letter body and free end bearing are separately positioned on the free end of the pump shaft, and the free end
Sealed letter body is fixed on the outside of the pump cover；
The free terminal big envelope is located on the pump shaft, and is located in the free end sealed letter body；
The end of the free end of the pump shaft is provided with axis head nut, and free end fan is provided on the axis head nut.
Above-mentioned a kind of double Shell multistage low pressure safety injection pump, wherein the drive end bearing uses air-cooled oil lubrication angle
Contact ball bearing；The free end bearing uses air-cooled oil lubrication cylinder roller bearing.
Above-mentioned a kind of double Shell multistage low pressure safety injection pump, wherein hydrophobic pipeline is set in the cylinder.
A kind of above-mentioned double Shell multistage low pressure safety injection pump, wherein the driving end at end of the pump shaft and described
Coupled between axis device using taper.
Above-mentioned a kind of double Shell multistage low pressure safety injection pump, wherein the inducer uses high anti-cavitation inducer.
Above-mentioned a kind of double Shell multistage low pressure safety injection pump, wherein be provided with and be used in the free end sealed letter body
Store the heat shielding chamber of cold water.
A kind of above-mentioned double Shell multistage low pressure safety injection pump, wherein the axis of the drive end bearing and free end bearing
Body is held using integral ring-shaped structure.
Double Shell multistage low pressure safety injection pump of the invention, has the advantage that compared with prior art
1) impeller progression is 3 grades, and using balancing drum balancing axial thrust, also remaining portion of residual axial force is in rotor
Tension state, residual axial force is by driving the angular contact ball bearing at end to bear；
2) Drawing-Core structure is used, it is easy to maintenance；It can be in the case where not unloading the import and export pipeline, not mobile motor and core packet
Carry out mechanical seal and the replacement of bearing；
3) pump driving end uses air-cooled oil lubrication angular contact ball bearing, and anti-drive end uses air-cooled oil lubrication cylindrical roller axis
It holds, realizes no pre-lubrication and play pump, simplify system configuration；Bearing body uses integral ring-shaped structure, compared with semicircular configuration,
Connection more fastens, and rigidity is good, and pump is with small vibration, runs smoothly；
4) setting of axially position bearing expands to free end after guaranteeing pump group heat-shock at driving end, makes the operation of pump
Not thermal expansion effects protect motor side apparatus；
5) parts of bearings is using pressure fan coolling；
6) hydrophobic pipeline is set in cylinder, to embody the mediator depletion containing irradiation dose in middle section and guide vane
The hommization of maintenance.
Detailed description of the invention
Fig. 1 is the cross-sectional view of double Shell multistage low pressure safety injection pump of the invention；
Fig. 2 is the three-dimensional structure diagram of double Shell multistage low pressure safety injection pump of the invention.
Specific embodiment
It is right with reference to the accompanying drawing in order to make those skilled in the art be better understood when technical solution of the present invention
Its specific embodiment is described in detail:
Please refer to Fig. 1 and Fig. 2, highly preferred embodiment of the present invention, a kind of double Shell multistage low pressure safety injection pump, including cylinder
1, middle section component 2, pump shaft 3, drive end bearing 4, driving terminal envelope 5, rotor part 6, balancing drum 7, free end sealed letter body 8,
Free end bearing 9 and free terminal envelope 10.
Laterally setting, the open at one end of cylinder 1 are provided with pump cover 11 to cylinder 1, and another end opening is provided with suction casing component
12, suction passage is provided in suction casing component 12, be ensure that the stabilization of runner, is enhanced the intake performance of pump.
Inlet and outlet adapter tube 13 is provided on the lateral wall of cylinder 1, inlet and outlet adapter tube 13 can satisfy inlet and outlet adapter tube load.
Middle section component 2 is arranged in cylinder 1, and middle section component 2 and cylinder 1 form double Shell；The laterally setting of pump shaft 3, pump
Axis 3 sequentially passes through suction casing component 12, middle section component 2 and pump cover 11；It is respectively to drive that pump shaft 3, which extends the both ends outside cylinder 1,
Moved end and free end, and drive end adjacent with suction casing component 12.
Drive end bearing 4 and driving terminal envelope 5 are separately positioned on the driving end of pump shaft 3, and drive terminal envelope 5 and suction casing
Component 12 is connected, and the end at the driving end of pump shaft 3 is provided with shaft coupling 14, setting driving end fan 15 on shaft coupling 14.Pump shaft 3
Driving end end and shaft coupling 14 between coupled using taper, it is convenient for disassembly and assembly.
Rotor part 6 is set on pump shaft 3, and is located in middle section component 2, and rotor part 6 includes inducer 61 and three-level
Impeller 62, inducer 61 are adjacent with suction casing component 12；Balancing drum 7 is set on pump shaft 3, and is located in pump cover 11.
Free end sealed letter body 8 and free end bearing 9 are separately positioned on the free end of pump shaft 3, and free end sealed letter body 8
It is fixed on the outside of pump cover 11；Free terminal envelope 10 is set on pump shaft 3, and is located in free end sealed letter body 8；Pump shaft 3
The end of free end is provided with axis head nut 16, and free end fan 17 is provided on axis head nut 16.
Drive end bearing 4 uses air-cooled oil lubrication angular contact ball bearing；Free end bearing 9 is rolled using air-cooled oil lubrication cylinder
Sub- bearing realizes no pre-lubrication and plays pump, simplifies system configuration.The bearing body of drive end bearing 4 and free end bearing 9 uses
Integral ring-shaped structure, semicircular configuration are compared, and connection more fastens, and rigidity is good, and pump is with small vibration, are run smoothly.
Hydrophobic pipeline is set in cylinder 1.Hydrophobic pipeline is set between every grade of middle section, to include middle section component and guide vane
There is the mediator depletion of irradiation dose, embodies the hommization of maintenance.
Inducer 61 uses high anti-cavitation inducer, promotes the anti-cavitation ability of whole pump.
The heat shielding chamber for storing cold water is provided in free end sealed letter body 8, this heat shielding structure can obstruct medium
Heat transfer is to gland seal device, it is ensured that the normal operation of pump.
Double Shell multistage low pressure safety injection pump of the invention, impeller progression are 3 grades, and using the structure of balancing drum, balance is big
Part axial force, also remaining portion of residual axial force makes rotor be in tension state, and residual axial force is by driving the corner connection at end
Ball bearing is touched to bear.Rotor part is rigidly good, and rotor speed is much smaller than its critical speed.It is splashed using thin oil oil bath+disc
Lubrication, free end bearing and drive end bearing are respectively adopted and drive end fan 15 to force fan coolling.
Double Shell multistage low pressure safety injection pump of the invention is horizontal multi-stage double shell centrifugal pump, using Drawing-Core structure,
Core packet can integrally extract replacement out, and site examining and repairing is convenient for disassembly and assembly.It can be the case where not unloading the import and export pipeline, not mobile motor and core packet
It is lower to carry out each mechanical seal and the replacement of bearing.Ensure to pump after gap (gap between rotor and stator) design between sound component
It being capable of 180 DEG C of the media-resistant thermal shocks in 5 seconds.
In conclusion double Shell multistage low pressure safety injection pump of the invention, easy to maintenance, run smoothly, can satisfy peace
Row for the national games.
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 (7)
1. a kind of double Shell multistage low pressure safety injection pump, which is characterized in that including cylinder, middle section component, pump shaft, drive end axle
It holds, drive terminal envelope, rotor part, balancing drum, free end sealed letter body, free end bearing and free terminal envelope, in which:
The cylinder is laterally arranged, and the open at one end of the cylinder is provided with pump cover, and another end opening is provided with suction casing component,
Suction passage is provided in the suction casing component；
Inlet and outlet adapter tube is provided on the lateral wall of the cylinder；
The middle section component is arranged in the cylinder, and the middle section component and the cylinder form double Shell；
The pump shaft is laterally arranged, and the pump shaft sequentially passes through suction casing component, middle section component and pump cover；
The pump shaft extends the both ends outside the cylinder and respectively drives end and free end, and the driving end and the suction
It is adjacent to enter section component；
The drive end bearing and driving terminal envelope are separately positioned on the driving end of the pump shaft, and driving terminal envelope and institute
It states suction casing component to be connected, the end at the driving end of the pump shaft is provided with shaft coupling, setting driving end wind on the shaft coupling
Fan；
The rotor part is set on the pump shaft, and is located in the middle section component, and the rotor part includes inducer
With three-level impeller, the inducer is adjacent with the suction casing component；
The balancing drum is set on the pump shaft, and is located in the pump cover；
The free end sealed letter body and free end bearing are separately positioned on the free end of the pump shaft, and the free end seals
Letter body is fixed on the outside of the pump cover；
The free terminal big envelope is located on the pump shaft, and is located in the free end sealed letter body；
The end of the free end of the pump shaft is provided with axis head nut, and free end fan is provided on the axis head nut.
2. a kind of double Shell multistage low pressure safety injection pump according to claim 1, which is characterized in that the drive end bearing
Using air-cooled oil lubrication angular contact ball bearing；The free end bearing uses air-cooled oil lubrication cylinder roller bearing.
3. a kind of double Shell multistage low pressure safety injection pump according to claim 1, which is characterized in that setting in the cylinder
Hydrophobic pipeline.
4. a kind of double Shell multistage low pressure safety injection pump according to claim 1, which is characterized in that the driving of the pump shaft
Coupled between the end at end and the shaft coupling using taper.
5. a kind of double Shell multistage low pressure safety injection pump according to claim 1, which is characterized in that the inducer uses
High anti-cavitation inducer.
6. a kind of double Shell multistage low pressure safety injection pump according to claim 1, which is characterized in that the free end sealing
The heat shielding chamber for storing cold water is provided in letter body.
7. a kind of double Shell multistage low pressure safety injection pump according to claim 1, which is characterized in that the drive end bearing
Integral ring-shaped structure is used with the bearing body of free end bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276452.5A CN109899294B (en) | 2019-04-08 | 2019-04-08 | Double-layer-shell multistage low-pressure safety injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276452.5A CN109899294B (en) | 2019-04-08 | 2019-04-08 | Double-layer-shell multistage low-pressure safety injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109899294A true CN109899294A (en) | 2019-06-18 |
| CN109899294B CN109899294B (en) | 2024-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910276452.5A Active CN109899294B (en) | 2019-04-08 | 2019-04-08 | Double-layer-shell multistage low-pressure safety injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109899294B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201377434Y (en) * | 2009-04-18 | 2010-01-06 | 赵景权 | Mining horizontal type multistage pump with high suction lift |
| CN205618370U (en) * | 2016-03-22 | 2016-10-05 | 大连深蓝泵业有限公司 | Hua longyi is low pressure safe injection pump for nuclear power technology |
| CN106402036A (en) * | 2016-12-06 | 2017-02-15 | 江苏海天科技有限公司 | Horizontal type double-shell radially-sectioned symmetrically-arranged cylindrical multi-stage centrifugal pump |
| CN209925212U (en) * | 2019-04-08 | 2020-01-10 | 上海阿波罗机械股份有限公司 | Multistage low pressure safety injection pump of double-deck casing |
| CN111980930A (en) * | 2020-08-10 | 2020-11-24 | 大连双龙泵业制造有限公司 | Novel inducer segment guide vane type multistage centrifugal pump |
-
2019
- 2019-04-08 CN CN201910276452.5A patent/CN109899294B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201377434Y (en) * | 2009-04-18 | 2010-01-06 | 赵景权 | Mining horizontal type multistage pump with high suction lift |
| CN205618370U (en) * | 2016-03-22 | 2016-10-05 | 大连深蓝泵业有限公司 | Hua longyi is low pressure safe injection pump for nuclear power technology |
| CN106402036A (en) * | 2016-12-06 | 2017-02-15 | 江苏海天科技有限公司 | Horizontal type double-shell radially-sectioned symmetrically-arranged cylindrical multi-stage centrifugal pump |
| CN209925212U (en) * | 2019-04-08 | 2020-01-10 | 上海阿波罗机械股份有限公司 | Multistage low pressure safety injection pump of double-deck casing |
| CN111980930A (en) * | 2020-08-10 | 2020-11-24 | 大连双龙泵业制造有限公司 | Novel inducer segment guide vane type multistage centrifugal pump |
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| Publication number | Publication date |
|---|---|
| CN109899294B (en) | 2024-06-21 |
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