CN204283996U - A kind of core main pump - Google Patents
A kind of core main pump Download PDFInfo
- Publication number
- CN204283996U CN204283996U CN201420656985.9U CN201420656985U CN204283996U CN 204283996 U CN204283996 U CN 204283996U CN 201420656985 U CN201420656985 U CN 201420656985U CN 204283996 U CN204283996 U CN 204283996U
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- CN
- China
- Prior art keywords
- pump
- pump housing
- core main
- main pump
- linear leaf
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Abstract
The utility model provides a kind of core main pump, by being similar spherical structure by pump body design, making the pump housing be easy to flaw detection, reaching the pump housing designed and there is strong mechanical performance, the pump housing of spherical structure also has the effect of the radial force of ballast pump, thus the pump housing designed has high Security; Be linear leaf and short blade two kinds of forms by the stator blade design of core main pump, the number of linear leaf is 1, and all the other are short blade, and linear leaf can prevent freezing mixture in core main pump inward turning transhipment use, thus reduces energy loss, improves the efficiency of core main pump.
Description
Technical field
The utility model relates to fluid machinery, particularly a kind of energy-efficient core main pump.
Background technique
In nuclear reactor coolant system, core main pump is unique high-speed rotating equipment, also be primary Ioops pressure boundary equipment, in one loop of nuclear power station, core main pump is used for High Temperature High Pressure and drives freezing mixture at RCP (reactor cooling system) system internal circulation flow, continuously the heat produced in reactor core is passed to steam generator, to determine that the temperature of reactor is maintained within a certain range, prevent the generation of a series of nuclear accident caused because core temperature is too high, make nuclear power station can stablize, work normally.Core main pump efficiency is determined by the energy loss of core main pump, energy loss is large, and then efficiency is low, the little then efficiency of energy loss is high, the energy loss during work of core main pump mainly comprises mechanical loss, disc friction and hydraulic loss, wherein hydraulic loss in total losses in occupation of the overwhelming majority, and mechanical loss and disc friction are generally difficult to reduce, and hydraulic loss often has very large reduction space.
The at present conventional pump housing is the pump housing of helical structure, but the pump housing of this structure can not meet the job requirement of High Temperature High Pressure due to reasons such as inconvenience of detecting a flaw, pressure distribution are asymmetric; The flow passage components of AP1000 core main pump form primarily of impeller, stator and the pump housing, the coolant velocity flowed out from stator is larger, and flowing velocity is higher, when freezing mixture flows through the pump housing and the impact loss of pump housing internal face and flow losses larger, in order to reduce the flowing velocity of freezing mixture in pump chamber, reduce energy loss, in order to reduce the flowing velocity of freezing mixture in pump chamber, must be larger by the area design of pump chamber; But when pump chamber area is larger, freezing mixture will be rotating flowing after stator flows out in pump chamber, multiple either large or small flowing whirlpool can be formed, so also can cause larger energy loss, therefore design a kind ofly prevent the core Structure of RCP of freezing mixture rotational flow in pump case to improving the efficiency of core main pump, energy saving is very meaningful, design a kind of job requirement that can meet core main pump High Temperature High Pressure, significant to the safe operation of nuclear power station.
Model utility content
In order to solve the problem, the utility model provides a kind of core main pump, solves the problems referred to above by the stator designing a kind of new structure, reaches the object improving core main pump efficiency, Security and energy saving.
Realizing the technological scheme that above-mentioned purpose adopts is:
A kind of core main pump, comprise front pump cover, impeller, the pump housing, stator, pump housing base, bearing, axle, described front pump cover is fixed on the pump housing, the pump housing is contained on pump housing base, be contained between described axle and the pump housing on bearing, described impeller, stator are all loaded on axle, it is characterized in that, the pump housing is similar spherical structure, and the blade of stator comprises linear leaf and short blade.
Further, the linear leaf of stator is a slice, and the pump housing internal face smooth contact near linear leaf and pump discharge, rest blade is short blade.
Further, the area equation in the described each cross section of pump housing runner.
Core main pump described in the utility model, in order to improve the Security of core main pump, the pump housing of core main pump is counted similar spherical structure, make the area equation in each cross section of pump housing runner, the pump housing of this structure facilitates the inside of material to detect a flaw on the one hand, the core main pump pump housing of strong mechanical performance can be produced like this, thus the core main pump pump housing is worked at high temperature under high pressure; The pump body design of core main pump is similar spherical structure by another aspect, and the pump housing of this structure can well balance the radial force suffered by the pump housing, reduces the stressed of pump, improves Security during pump operation.
In order to improve the efficiency of core main pump, be linear leaf and short blade two kinds of forms by the blade design of stator, the number of linear leaf is 1, remaining blade is short blade, internal face smooth contact near linear leaf and the pump housing export, in such pump housing originally will in pump case the freezing mixture of rotational flow, to pump housing output flow under the barrier effect of linear leaf, thus the object preventing freezing mixture from rotating in the pump housing will be reached.
The beneficial effects of the utility model are: make core main pump have higher Security, improve the efficiency of core main pump simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural drawing of core main pump described in the utility model.
Fig. 2 is the sectional view of core main pump described in the utility model.
In figure:
1-short blade, 2-linear leaf, 3-impeller blade, 4-front pump cover, 5-impeller, the 6-pump housing, 7-stator, 8-pump housing base, 9-bearing, 10-axle.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described, but protection domain of the present utility model is not limited to this.
As shown in Figure 1 and Figure 2, core main pump described in the utility model, comprise front pump cover 4, impeller 5, the pump housing 6, stator 7, pump housing base 8, bearing 9, axle 10, described front pump cover 4 is fixed on the pump housing 6, the pump housing 6 is contained on pump housing base 8, be contained between described axle 10 and the pump housing 6 on bearing 9, described impeller 5, stator 7 are all loaded on axle 10.The pump housing 6 is similar spherical structure, and the blade of stator 7 comprises linear leaf 2 and short blade 1.The linear leaf 2 of stator 7 is a slice, and the pump housing internal face smooth contact near linear leaf 2 and pump discharge, rest blade is short blade 1.The area equation in each cross section of the described pump housing 6 runner.
Freezing mixture flows into impeller 5 by front pump cover 4, flows into stator 7 along impeller blade 3, then finally flows into the pump housing 6 along linear leaf 2 and short blade 1; After freezing mixture flows out from the outlet of stator 7, can flow in the pump housing 6 along the pump housing 6 runner, when freezing mixture arrives near pump discharge, due to the existence of linear leaf 2, can not continue along the pump housing 6 runner circular movement, will export along with the runner of linear leaf 2 flows to the pump housing 6.
Core main pump described in the utility model, in order to improve the Security of core main pump, the pump housing 6 of core main pump is counted similar spherical structure, make the area equation in each cross section of the pump housing 6 runner, the inside of material is facilitated to detect a flaw on the one hand, improve the mechanical property of the core main pump pump housing 6, thus the core main pump pump housing 6 can be worked at high temperature under high pressure; The radial force suffered by the pump housing 6 can be balanced on the other hand, reduce the stressed of pump, improve Security during pump operation.Be linear leaf 2 and short blade 1 two kinds of forms by the blade design of stator 7, the number of linear leaf 2 is 1, remaining blade is short blade 1, linear leaf 2 and the pump housing 6 export neighbouring internal face smooth contact, in such pump housing 6 originally will in pump case the freezing mixture of rotational flow, to the pump housing 6 output flow under the barrier effect of linear leaf 2, thus the object preventing freezing mixture from rotating in the pump housing 6 will be reached, improve the efficiency of core main pump.
That more than makes with reference to an embodiment for the utility model patent illustrates, but the utility model is not limited to above-described embodiment, also comprises other embodiments in the utility model concept or variation.
Claims (3)
1. a core main pump, comprise front pump cover (4), impeller (5), the pump housing (6), stator (7), pump housing base (8), bearing (9), axle (10), described front pump cover (4) is fixed on the pump housing (6), the pump housing (6) is contained on pump housing base (8), be contained on bearing (9) between described axle (10) and the pump housing (6), described impeller (5), stator (7) is all loaded on axle (10), it is characterized in that, the pump housing (6) is similar spherical structure, the blade of stator (7) comprises linear leaf (2) and short blade (1).
2. core main pump as claimed in claim 1, it is characterized in that: the linear leaf (2) of stator (7) is a slice, and the pump housing internal face smooth contact near linear leaf (2) and pump discharge, rest blade is short blade (1).
3. core main pump as claimed in claim 1, is characterized in that: the area equation in each cross section of the described pump housing (6) runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656985.9U CN204283996U (en) | 2014-11-05 | 2014-11-05 | A kind of core main pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656985.9U CN204283996U (en) | 2014-11-05 | 2014-11-05 | A kind of core main pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283996U true CN204283996U (en) | 2015-04-22 |
Family
ID=52867161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420656985.9U Expired - Fee Related CN204283996U (en) | 2014-11-05 | 2014-11-05 | A kind of core main pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204283996U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275880A (en) * | 2015-10-16 | 2016-01-27 | 江苏大学 | Flow mixing type nuclear main pump |
| CN105805044A (en) * | 2016-04-25 | 2016-07-27 | 江苏大学 | Logarithmic spiral line guide vane with long and short blades for nuclear main pump and design method of logarithmic spiral line guide vane |
| CN106567859A (en) * | 2016-11-04 | 2017-04-19 | 江苏大学 | Nuclear main pump spherical pumping chamber |
| CN115163542A (en) * | 2022-07-28 | 2022-10-11 | 江苏大学 | Nuclear reactor main pump with shedding-inhibiting scroll plate |
-
2014
- 2014-11-05 CN CN201420656985.9U patent/CN204283996U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275880A (en) * | 2015-10-16 | 2016-01-27 | 江苏大学 | Flow mixing type nuclear main pump |
| CN105275880B (en) * | 2015-10-16 | 2019-02-05 | 江苏大学 | A kind of mixed-flow core main pump |
| CN105805044A (en) * | 2016-04-25 | 2016-07-27 | 江苏大学 | Logarithmic spiral line guide vane with long and short blades for nuclear main pump and design method of logarithmic spiral line guide vane |
| CN105805044B (en) * | 2016-04-25 | 2019-04-30 | 江苏大学 | Log spiral guide vane and its design method of the one seed nucleus main pump with deviated splitter vane |
| CN106567859A (en) * | 2016-11-04 | 2017-04-19 | 江苏大学 | Nuclear main pump spherical pumping chamber |
| CN106567859B (en) * | 2016-11-04 | 2019-04-02 | 江苏大学 | One seed nucleus main pump spherical shape pumping chamber |
| CN115163542A (en) * | 2022-07-28 | 2022-10-11 | 江苏大学 | Nuclear reactor main pump with shedding-inhibiting scroll plate |
| CN115163542B (en) * | 2022-07-28 | 2024-05-03 | 江苏大学 | Nuclear reactor main pump with vortex plate capable of inhibiting falling off |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20161105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |