CN202597257U - Pump casing structure of plant water pump for nuclear power plant - Google Patents
Pump casing structure of plant water pump for nuclear power plant Download PDFInfo
- Publication number
- CN202597257U CN202597257U CN 201220118849 CN201220118849U CN202597257U CN 202597257 U CN202597257 U CN 202597257U CN 201220118849 CN201220118849 CN 201220118849 CN 201220118849 U CN201220118849 U CN 201220118849U CN 202597257 U CN202597257 U CN 202597257U
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- China
- Prior art keywords
- guide plate
- outer cover
- inlet casing
- blower inlet
- pump
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a pump casing structure of a plant water pump for a nuclear power plant. The pump casing structure consists of a primary pump casing set, a secondary pump casing set and a final pump casing set which are sequentially connected in series from bottom to top; each pump casing set consists of a connecting casing and a diversion casing; the lower end of the primary connecting casing is connected with an inlet loudspeaker, and the upper end of the final pump casing set is connected with a connecting pipe; each of the primary pump casing set, the secondary pump casing set and the final pump casing set comprises a flow deflector outer cover, a flow deflector inner cover and a plurality of flow deflectors, wherein the flow deflector outer cover and the flow deflector inner cover form a diversion passage, and the flow deflectors are arranged in the diversion passage and connect the flow deflector outer cover and the flow deflector inner cover into a whole; the inlet of the flow deflector outer cover is in smooth transition with the outlet of the connecting casing; and the inside diameter of the outlet of the flow deflector outer cover of the final diversion casing is greater than the inside diameters of the outlets of the flow deflector outer covers of the lower two stages of diversion casing and is as same as the inside diameter of the inlet of the connecting pipe, so that the outlet of the flow deflector outer cover of the final diversion casing is in smooth transition with the inlet of the connecting pipe.
Description
Technical field
The utility model relates to a kind of house service pump that is used for nuclear power station, is specifically related to a kind of pump shell structure that is used for the house service pump of nuclear power station.
Background technique
The working medium that is used for the house service pump of nuclear power station is to contain sea of sand water.The major function of essential service water pump in nuclear power station is that the liquid heat that the component cooling water system transmission comes finally is transferred to seawater, and extracting seawater is cooled off component cooling water in other words.It is as the ultimate heat sink of nuclear island, and its significance is self-evident.
House service pump is to carry undressed seawater in the AP1000 nuclear power station, and the sand content in the seawater is than higher, and its flow passage components especially impeller need the anti-erosion that contains the sand medium.Under possible condition, the flow velocity that reduces the impeller outlet medium is to solve the effective way that contains the erosion of sand medium.The house service pump of existing structure is to adopt the single-stage impeller, so the applicant is improved to the three grades of forms that impeller is provided with up and down that adopt with house service pump.Three grades of impellers can reduce the external diameter of impeller for the single-stage impeller; Can reduce the speed of impeller outlet medium; Thereby can improve the anti-ability that contains the erosion of sand medium of flow passage components, prolong the working life of pump, therefore must configuration and three grades of pump cases that impeller is corresponding.
Summary of the invention
The purpose of the utility model is in order to overcome the deficiency of existing technology, a kind of pump shell structure that is used for the house service pump of nuclear power station to be provided, it can with the import smooth transition of connecting tube, thereby reduced hydraulic loss.
The technological scheme that realizes above-mentioned purpose is: a kind of pump shell structure that is used for the house service pump of nuclear power station; Said pump case is by chopped-off head pump case group, secondary pump case group and the final stage pump case group of serial connection constitute successively from bottom to top; Each pump case group constitutes by connecting shell and being connected the blower inlet casing that connects the shell upper end; The lower end that said chopped-off head connects shell connects import loudspeaker, the upper end connecting tube of said final stage blower inlet casing; Wherein,
Said chopped-off head connects shape and all identical and big up and small down horn shape of size that shell, secondary connection shell and final stage connect shell;
Said chopped-off head blower inlet casing, secondary blower inlet casing and final stage blower inlet casing include guide plate outer cover, guide plate inner cover and multi-disc guide plate; Said guide plate outer cover and guide plate inner cover constitute guide channel; Said multi-disc guide plate is dispersion shape and is distributed in the guide channel and with guide plate outer cover and guide plate inner cover and links into an integrated entity; The inner of said guide plate inner cover is provided with support sleeve, the import of said guide plate outer cover and the said outlet smooth transition that connects shell;
The outlet internal diameter of the guide plate outer cover of said chopped-off head blower inlet casing and the guide plate outer cover of secondary blower inlet casing is identical; The outlet internal diameter of the guide plate outer cover of said final stage blower inlet casing is greater than the outlet internal diameter of the following guide plate outer cover of two-stage blower inlet casing and identical with the import internal diameter of said connecting tube, so that the import smooth transition of the outlet of the guide plate outer cover of said final stage blower inlet casing and connecting tube.
The pump shell structure of the above-mentioned house service pump that is used for nuclear power station; Wherein, The outlet inwall of the outlet inwall of the guide plate outer cover of said chopped-off head blower inlet casing and the guide plate outer cover of said secondary blower inlet casing is up-small and down-big conical surface, and the outlet inwall of the guide plate outer cover of said final stage blower inlet casing is the cylndrical surface.
The pump shell structure of the above-mentioned house service pump that is used for nuclear power station, wherein, the import inwall of said connecting tube is up big and down small conical surface.
The technological scheme of the pump shell structure of the house service pump that is used for nuclear power station of the utility model; Adopt three groups of pump case groups that are connected in series successively to constitute from bottom to top; And following two-stage pump case group is measure-alike; The outlet diameter of final stage pump case group is greater than the outlet diameter of following two-stage pump case group and identical with the inlet diameter of connecting tube, make final stage pump case group outlet can with the import smooth transition of connecting tube, thereby reduced hydraulic loss.
Description of drawings
Fig. 1 is the schematic representation of the pump shell structure of the house service pump that is used for nuclear power station of the utility model.
Embodiment
In order to understand the technological scheme of the utility model better, below through embodiment particularly and combine accompanying drawing at length to explain:
See also Fig. 1; The pump shell structure of the house service pump that is used for nuclear power station of the utility model; Chopped-off head pump case group, secondary pump case group and final stage pump case group by being connected in series successively from bottom to top constitute, and each pump case group constitutes by connecting shell 11,21,31 and being connected the blower inlet casing 12,22,32 that connects shell 11,21,31 upper ends.The lower end that chopped-off head connects shell 11 connects import loudspeaker 3, and the upper end of final stage blower inlet casing 32 connects connecting tube 4.The import inwall of connecting tube 4 is up big and down small conical surface.
Chopped-off head connects shape and all identical and big up and small down horn shape of size that shell 11, secondary coupling housing 21 and final stage connect shell 31.
Chopped-off head blower inlet casing 12, secondary blower inlet casing 22 and final stage blower inlet casing 32 include guide plate outer cover 201, guide plate inner cover 202 and multi-disc guide plate 203; Wherein, Guide plate outer cover 201 and guide plate inner cover 202 constitute guide channel; Multi-disc guide plate 203 is dispersion shape and is distributed in the guide channel and two ends are separately fixed on guide plate outer cover 201 and the guide plate inner cover 202, so that guide plate outer cover 201 and guide plate inner cover 202 are linked into an integrated entity.
The inner of every grade of guide plate inner cover 202 is integrally formed with the support sleeve that cooperates with pump shaft.The import of every grade of guide plate outer cover 201 respectively with the outlet smooth transition that connects shell of the corresponding levels.
The outlet internal diameter of the guide plate outer cover 201 of chopped-off head blower inlet casing 12 and the guide plate outer cover 201 of secondary blower inlet casing 22 is identical; The outlet internal diameter of the guide plate outer cover 201 ' of final stage blower inlet casing 32 is greater than the outlet internal diameter of the following guide plate outer cover 201 of two-stage blower inlet casing 12,22 and identical with the inlet diameter of connecting tube 4, so that the import smooth transition of the upper outlet of the guide plate outer cover 201 ' of final stage blower inlet casing 32 and connecting tube 4.
The guide plate outer cover of chopped-off head blower inlet casing 12, secondary blower inlet casing 22 and final stage blower inlet casing 32 by the die casting moulding; And outlet inwall 200 is up-small and down-big conical surface; For the outlet of the guide plate outer cover 201 ' that makes final stage blower inlet casing 32 and the import smooth transition of connecting tube 4, the outlet inwall 200 ' of the guide plate outer cover 201 ' of final stage blower inlet casing 32 is processed as the cylndrical surface.
The pump shell structure of the house service pump that is used for nuclear power station of the utility model, can with the import smooth transition of connecting tube, thereby reduced hydraulic loss.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the utility model; And be not with the qualification of doing the utility model; As long as in the connotation scope of the utility model, all will drop in claims scope of the utility model the above embodiment's variation, modification.
Claims (3)
1. pump shell structure that is used for the house service pump of nuclear power station; It is characterized in that; Said pump case is by chopped-off head pump case group, secondary pump case group and the final stage pump case group of serial connection constitute successively from bottom to top; Each pump case group constitutes by connecting shell and being connected the blower inlet casing that connects the shell upper end, and the lower end that said chopped-off head connects shell connects import loudspeaker, the upper end connecting tube of said final stage blower inlet casing;
Said chopped-off head connects shape and all identical and big up and small down horn shape of size that shell, secondary connection shell and final stage connect shell;
Said chopped-off head blower inlet casing, secondary blower inlet casing and final stage blower inlet casing include guide plate outer cover, guide plate inner cover and multi-disc guide plate; Said guide plate outer cover and guide plate inner cover constitute guide channel; Said multi-disc guide plate is dispersion shape and is distributed in the guide channel and with guide plate outer cover and guide plate inner cover and links into an integrated entity; The inner of said guide plate inner cover is provided with support sleeve, the import of said guide plate outer cover and the said outlet smooth transition that connects shell;
The outlet internal diameter of the guide plate outer cover of said chopped-off head blower inlet casing and the guide plate outer cover of secondary blower inlet casing is identical; The outlet internal diameter of the guide plate outer cover of said final stage blower inlet casing is greater than the outlet internal diameter of the following guide plate outer cover of two-stage blower inlet casing and identical with the import internal diameter of said connecting tube, so that the import smooth transition of the outlet of the guide plate outer cover of said final stage blower inlet casing and connecting tube.
2. the pump shell structure that is used for the house service pump of nuclear power station according to claim 1; It is characterized in that; The outlet inwall of the outlet inwall of the guide plate outer cover of said chopped-off head blower inlet casing and the guide plate outer cover of said secondary blower inlet casing is up-small and down-big conical surface, and the outlet inwall of the guide plate outer cover of said final stage blower inlet casing is the cylndrical surface.
3. the pump shell structure that is used for the house service pump of nuclear power station according to claim 1 is characterized in that, the import inwall of said connecting tube is up big and down small conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118849 CN202597257U (en) | 2012-03-27 | 2012-03-27 | Pump casing structure of plant water pump for nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118849 CN202597257U (en) | 2012-03-27 | 2012-03-27 | Pump casing structure of plant water pump for nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597257U true CN202597257U (en) | 2012-12-12 |
Family
ID=47314804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220118849 Expired - Lifetime CN202597257U (en) | 2012-03-27 | 2012-03-27 | Pump casing structure of plant water pump for nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606539A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Pump shell structure of service water pump for nuclear power station |
-
2012
- 2012-03-27 CN CN 201220118849 patent/CN202597257U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606539A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Pump shell structure of service water pump for nuclear power station |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
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| CX01 | Expiry of patent term |