CN202914397U - Guide vane main feed water pump for nuclear power plant conventional island - Google Patents
Guide vane main feed water pump for nuclear power plant conventional island Download PDFInfo
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- CN202914397U CN202914397U CN 201220614119 CN201220614119U CN202914397U CN 202914397 U CN202914397 U CN 202914397U CN 201220614119 CN201220614119 CN 201220614119 CN 201220614119 U CN201220614119 U CN 201220614119U CN 202914397 U CN202914397 U CN 202914397U
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- pump
- pump cover
- main feed
- nuclear power
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Abstract
The utility model relates to pumps for nuclear power plant conventional islands, in particular to a guide vane main feed water pump for a nuclear power plant conventional island. The guide vane main feed water pump comprises a drive side bearing body, a left pump cover, a pump cylinder body component, a guide vane, a right pump cover, a non-drive side bearing body and a pump rotor component, wherein the left pump cover and the right pump cover are connected with the pump cylinder body component, the guide vane is covered on the right pump cover, the other end of the guide vane is matched with the left pump cover through a spigot, and a containing space with an annular hollow interior is formed after combined assembly is carried out; a suction connection pipe and spitting connection pipe of the pump are combined with a pump cylinder body into a whole in a welded mode, and a pump shaft is supported by the drive side bearing body and the non-drive side bearing body, penetrates out from the drive side bearing body, and is connected with a hydraulic coupler; and a vane wheel is in a double suction structure, fixedly connected to the shaft through a threaded sleeve, and matched with the guide vane for energy conversion. The guide vane main feed water pump for the nuclear power plant conventional island has the advantages of high pressure, high rotating speed, and high efficiency, is provided with a vane wheel hydraulic model with sharp descending performance, a suction chamber, the guide vane and an annular water pressure chamber, the suction chamber, the guide vane and the annular water pressure chamber are matched with the vane wheel hydraulic model, and thus basic using performance requirements of a system are met.
Description
Technical field
The utility model relates to the nuclear power station conventional island pump, specifically a kind of nuclear power station conventional island guide-vane main feed pump.
Background technique
Main feed pump is one of capital equipment in the nuclear power station secondary loop system, is the chief component of conventional island water supply system, is the key equipment of nuclear power station.The major function of nuclear power station conventional island main feed pump is with the extraction of the high-temperature water in the oxygen-eliminating device and boosts, delivers to steam generator through high-pressure heater, and utilize the water supply system regulatory function to provide different feedwater flows to steam generator.It is the important heat power engineering system that guarantees nuclear island safe operation and Steam-water Quality.
Along with country greatly develops Nuclear Electricity, the demand of conventional island main feed pump increases progressively fast.Domestic existing nuclear power station main feed pump mainly is to rely on import equipment since foreign technology monopolization, vibration and noise large, be not easy to safeguard, and cost is very high, has been difficult to satisfy the usage requirement of domestic nuclear power.
The model utility content
The purpose of this utility model is to provide a kind of nuclear power station conventional island guide-vane main feed pump that satisfies technical specification and nuclear power station usage requirement fully.
The purpose of this utility model is achieved through the following technical solutions:
The utility model comprises pump shaft, inboard bearing body, left pump cover, pump barrel body, stator, suction connection, the adapter that spues, right pump cover, non-drive side bearing support and impeller, wherein the both sides of pump barrel body are connected with respectively left pump cover and right pump cover, and the top of pump barrel body is communicated with respectively suction connection and the adapter that spues; Described stator is positioned at the pump barrel body, and an end of stator puts together on arbitrary pump cover, and the other end cooperates with another pump cover seam, attaches together the rear inner containing space that circularizes that forms; Described pump shaft passes left pump cover, pump barrel body and right pump cover, and two ends are supported by inboard bearing body and non-drive side bearing support respectively, and wherein the drive end of pump shaft is passed, linked to each other with hydraulic couplers by the inboard bearing body; Described impeller is installed on the pump shaft, is complementary with stator and carries out transformation of energy; Annular pumping chamber in suction chamber in suction connection on described impeller and the pump barrel body, left pump cover and the right pump cover, stator, the pump barrel body and the adapter that spues consist of the inner flow passage of a Conversion of Energy.
Wherein: described impeller is centrifugal double suction structure, is fixed on the pump shaft by thread bush, and the forward and backward choma that various outer diameter is set of this impeller makes impeller produce unidirectional axial force; Described inboard bearing body and non-drive side bearing support link to each other with right pump cover with left pump cover by bolt respectively, the drive end of described pump shaft links to each other with the inboard bearing body by sliding bearing, and anti-drive end links to each other with the non-drive side bearing support with thrust-bearing by sliding bearing; The radial force that produces when described main feed pump rotor weight and rotor running is by the sliding bearing radial support, and the one direction axial force that the main feed pump rotor produces is born by thrust-bearing; Be respectively equipped with mechanical seal between described pump shaft and left pump cover and the right pump cover; One end of described stator puts together on the right pump cover by bolt, is connected as a single entity with right pump cover, and the other end of stator cooperates with left pump cover seam, and is provided with the O RunddichtringO and seals; Described left pump cover and right pump cover link to each other with the pump barrel body by kingbolt respectively, attach together the rear inner containing space that circularizes hollow that forms; Carry out low pressure seal by metal wound gasket and O RunddichtringO between the outer stopper of the inner stopper of described left pump cover and right pump cover and pump barrel body; Carry out high pressure sealing by metal wound gasket and O RunddichtringO between the inner stopper of the outer stopper of left pump cover and right pump cover and pump barrel body; Described suction connection and the adapter that spues are welded on respectively the top of pump barrel body, and the longitudinal center line of suction connection is mutually 60 ° of angles with the longitudinal center line of taking over that spues; The longitudinal center line of the longitudinal center line of described suction connection, the adapter that spues and the radial centre lines of pump barrel body are coplanar, and plane of living in is perpendicular to the longitudinal center line of pump shaft; Be respectively equipped with the half-spiral runner on described left pump cover and the right pump cover, be provided with the man type double flow channel in the suction connection, half-spiral runner on left pump cover and the right pump cover and the man type double flow channel of suction connection consist of suction chamber, consist of the waterpower runner that is complementary with the annular chamber on impeller, stator, the pump barrel body and the adapter that spues.
Advantage of the present utility model and good effect are:
1. the utlity model has high pressure, at a high speed, efficiently, the characteristics of low net positive suction head, have the impeller hydraulic model of steep drop characteristic and the stator that is complementary with it and pump barrel body annular chamber, reached the basic usability requirement of system to pump.
2. impeller of the present utility model adopts centrifugal double suction structure, the axial force of ballast pump self preferably, and sealed at both ends ring arranges different external diameters, make residual axial force all the time towards a direction, stationarity when guaranteeing the pump running improves impeller working life, improves pump efficiency.
3. the every end two place's junction planes of left and right pump cover of the present utility model and pump barrel body are provided with metal wound gasket and O RunddichtringO, and medium does not occur for the thermal expansion non-uniform phenomenon that produces in the time of can absorbing thermal shock, the housing seal face that effectively guarantees reveals.
4. import of the present utility model, Way out and are on the same center line all up, can satisfy the specific (special) requirements of installation.
5. the suction passage of left and right pump cover of the present utility model is the semispiral type structure, is conducive to medium and does not produce circular rector and evenly enter impeller.
6. the utility model makes pump bear remaining end thrust by thrust-bearing, strengthens the stability of integral pump group; Come the radial force of radial support rotor gravity and generation by two sliding bearings radially of pump.
7. the utility model adopts the integrated mechanical sealing from flushing type, and the medium of available pump self washes, and need not external water source.
8. the utility model has overcome the not steady and pump group vibration large technological difficulties of foreign same type pump when small flow moves.
Description of drawings
Fig. 1 is internal structure schematic diagram of the present utility model;
Fig. 2 is that K among Fig. 1 is to view;
Wherein: 1 is pump shaft, and 2 is the inboard bearing body, and 3 is left pump cover, and 4 is the pump barrel body, 5 is stator, and 6 is suction connection, and 7 are the adapter that spues, and 8 is bolt, 9 is right pump cover, and 10 are mechanical seal, and 11 is the non-drive side bearing support, and 12 is sliding bearing, 13 is thrust-bearing, and 14 is kingbolt, and 15 is metal wound gasket, 16 is the O RunddichtringO, and 17 is sealing block, and 18 is impeller, 19 is thread bush, and 20 is pump pin assembly parts, and 21 for removing Baking soda.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Such as Fig. 1, shown in Figure 2, the utility model comprises pump barrel body 4, suction connection 6, spue and take over 7, stator 5, left pump cover 3, right pump cover 9, inboard bearing body 2, non-drive side bearing support 11, sliding bearing 12, thrust-bearing 13, impeller 18, pump shaft 1, thread bush 19, mechanical seal 10 and kingbolt 14, wherein pump barrel body 4 is welded as a whole with suction connection 6 and the adapter 7 that spues, the opening of suction connection 6 and the adapter 7 that spues all up, the longitudinal center line of suction connection 6, the radial centre lines of taking over 7 longitudinal center line and pump barrel body 4 of spuing is coplanar, and plane of living in is perpendicular to the longitudinal center line of pump shaft 1; Suction connection 6 and the adapter 7 that spues are welded on respectively the top of pump barrel body 4, and the longitudinal center line of suction connection 6 is mutually 60 ° of angles with the longitudinal center line of the adapter 7 that spues.
Inboard bearing body 2 puts together on the left pump cover 3 by bolt, and the inside of inboard bearing body 2 is provided with sliding bearing 12; Non-drive side bearing support 11 puts together on the right pump cover 9 by bolt, and the inside of non-drive side bearing support 11 is provided with sliding bearing 12 and thrust-bearing 13.Sliding bearing 12 is four oil film wedge sliding bearings, and thrust-bearing 13 is its type thrust-bearing of Jin Sibuli, and the bearing lubrication mode adopts pressure lubrication; Pump shaft 1 inserts from inboard bearing body 2, passes successively left pump cover 3, pump barrel body 4, stator 5, right pump cover 9 and non-drive side bearing support 11; Pump shaft 1 drive end is connected with inboard bearing body 2 by sliding bearing 12, anti-drive end is connected with non-drive side bearing support 11 with thrust-bearing 13 by sliding bearing 12, the radial force that two sliding bearings 12 produce when being used for radial support rotor weight and rotor running; The top of pump shaft 1 (drive end) is passed by inboard bearing body 2, links to each other by lengthening diaphragm coupling with hydraulic couplers; Be provided with integrated mechanical sealing 10 in the Seal cage between pump shaft 1 and left pump cover 3 and right pump cover 9, this mechanical seal 10 is self-circulation type, do not need external water of condensation, safe and reliable, mechanical seal 10 backwater are provided with device for detecting temperature, avoid the damaged condition that meets accident, can improve the working life of mechanical seal 10; Impeller 18 of the present utility model is centrifugal double-entry impeller, and choma size design is inconsistent before and after it, sets up the reservation axial force, makes rotor be in all the time tension state, strengthens the rigidity of rotor, and axial force is born by thrust-bearing 13; Double-entry impeller 18 adopts good anti-cavitation performance material, can improve the anti-cavitation performance of pump, by thread bush 19 impeller 18 is fixed on the pump shaft 1, the radial centre lines of impeller 18 radial centre lines and pump barrel body 4, left pump cover 3 and right pump cover 9 is coplanar, can satisfy the requirement of installation; Be parallel to the longitudinal center line direction at pump barrel body 4 cylindricals and be welded with pump pin assembly parts 20, install with the base substantially horizontal.
Working principle of the present utility model is:
The utility model is the centrifugal pump of single-stage, double suction, barrel-type, the support of two ends center line, is installed on the base by the pump pin assembly parts 20 on the pump barrel body 4.Motor operation drives pump shaft 1 rotation by hydraulic couplers, makes double-entry impeller 18 actings, to realize the stepless speed regulation of pump.Water is entered by suction connection 6, the flow through half-spiral volute chamber of left pump cover 3 and right pump cover 9, enter double-entry impeller 18 around pump shaft 1, through double-entry impeller 18 rotation actings, with medium transport behind stator 5 inside that are complementary with it, by stator 5 speed can be changed into pressure energy, medium is pressed into behind the annular chamber in the pump barrel body 4 again Conversion of Energy, takes over 7 from spuing at last and flows out.
Claims (10)
1. nuclear power station conventional island guide-vane main feed pump, it is characterized in that: comprise pump shaft (1), inboard bearing body (2), left pump cover (3), pump barrel body (4), stator (5), suction connection (6), the adapter (7) that spues, right pump cover (9), non-drive side bearing support (11) and impeller (18), wherein the both sides of pump barrel body (4) are connected with respectively left pump cover (3) and right pump cover (9), and the top of pump barrel body (4) is communicated with respectively suction connection (6) and the adapter (7) that spues; Described stator (5) is positioned at pump barrel body (4), and an end of stator (5) puts together on arbitrary pump cover, and the other end cooperates with another pump cover seam, attaches together the rear inner containing space that circularizes that forms; Described pump shaft (1) passes left pump cover (3), pump barrel body (4) and right pump cover (9), two ends are supported by inboard bearing body (2) and non-drive side bearing support (11) respectively, and wherein the drive end of pump shaft (1) is passed, linked to each other with hydraulic couplers by inboard bearing body (2); Described impeller (18) is installed on the pump shaft (1), is complementary with stator (5) and carries out transformation of energy; Annular pumping chamber in suction chamber in suction connection (6), left pump cover (3) and the right pump cover (9) on described impeller (18) and the pump barrel body (4), stator (5), the pump barrel body (4) and the adapter (7) that spues consist of the inner flow passage of a Conversion of Energy.
2. by nuclear power station conventional island claimed in claim 1 guide-vane main feed pump, it is characterized in that: described impeller (18) is centrifugal double suction structure, be fixed on the pump shaft (1) by thread bush (19), the forward and backward choma that various outer diameter is set of this impeller (18) makes impeller (18) produce unidirectional axial force.
3. by nuclear power station conventional island claimed in claim 1 guide-vane main feed pump, it is characterized in that: described inboard bearing body (2) and non-drive side bearing support (11) link to each other with right pump cover (9) with left pump cover (3) by bolt respectively, the drive end of described pump shaft (1) links to each other with inboard bearing body (2) by sliding bearing (12), and anti-drive end links to each other with non-drive side bearing support (11) with thrust-bearing (13) by sliding bearing (12); The radial force that produces when described main feed pump rotor weight and rotor running is by sliding bearing (12) radial support, and the one direction axial force that the main feed pump rotor produces is born by thrust-bearing (13).
4. by nuclear power station conventional island claimed in claim 1 guide-vane main feed pump, it is characterized in that: be respectively equipped with mechanical seal (10) between described pump shaft (1) and left pump cover (3) and the right pump cover (9).
5. by nuclear power station conventional island claimed in claim 1 guide-vane main feed pump, it is characterized in that: an end of described stator (5) puts together on the right pump cover (9) by bolt (8), be connected as a single entity with right pump cover (9), the other end of stator (5) cooperates with left pump cover (3) seam, and is provided with the O RunddichtringO and seals.
6. by nuclear power station conventional island claimed in claim 1 guide-vane main feed pump, it is characterized in that: described left pump cover (3) and right pump cover (9) link to each other with pump barrel body (4) by kingbolt (14) respectively, attach together the rear inner containing space that circularizes hollow that forms.
7. by nuclear power station conventional island claimed in claim 6 guide-vane main feed pump, it is characterized in that: carry out low pressure seal by metal wound gasket (15) and O RunddichtringO (16) between the inner stopper of described left pump cover (3) and right pump cover (9) and the outer stopper of pump barrel body (4); Carry out high pressure sealing by metal wound gasket (15) and O RunddichtringO (16) between the inner stopper of the outer stopper of left pump cover (3) and right pump cover (9) and pump barrel body (4).
8. by nuclear power station conventional island claimed in claim 1 guide-vane main feed pump, it is characterized in that: described suction connection (6) and the adapter (7) that spues are welded on respectively the top of pump barrel body (4), and the longitudinal center line of suction connection (6) is mutually 60 ° of angles with the longitudinal center line of the adapter (7) that spues.
9. by nuclear power station conventional island claimed in claim 8 guide-vane main feed pump, it is characterized in that: the longitudinal center line of the longitudinal center line of described suction connection (6), the adapter (7) that spues and the radial centre lines of pump barrel body (4) are coplanar, and plane of living in is perpendicular to the longitudinal center line of pump shaft (1).
10. by nuclear power station conventional island claimed in claim 1 guide-vane main feed pump, it is characterized in that: be respectively equipped with the half-spiral runner on described left pump cover (3) and the right pump cover (9), suction connection is provided with the man type double flow channel in (6), half-spiral runner on left pump cover (3) and the right pump cover (9) and the man type double flow channel of suction connection (6) consist of suction chamber, consist of the waterpower runner that is complementary with the annular chamber on impeller (18), stator (5), the pump barrel body (4) and the adapter (7) that spues.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220614119 CN202914397U (en) | 2012-11-19 | 2012-11-19 | Guide vane main feed water pump for nuclear power plant conventional island |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220614119 CN202914397U (en) | 2012-11-19 | 2012-11-19 | Guide vane main feed water pump for nuclear power plant conventional island |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914397U true CN202914397U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220614119 Expired - Lifetime CN202914397U (en) | 2012-11-19 | 2012-11-19 | Guide vane main feed water pump for nuclear power plant conventional island |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914397U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097037A (en) * | 2014-06-26 | 2014-10-15 | 哈尔滨电气动力装备有限公司 | Machining process for nuclear main pump guide blade of nuclear power station |
| CN104416259A (en) * | 2013-08-28 | 2015-03-18 | 上海凯泉泵业（集团）有限公司 | Welding process of water feed pump of nuclear power plant conventional island |
| CN106286396A (en) * | 2016-08-30 | 2017-01-04 | 柳州市酸王泵阀制造有限公司 | A kind of split type desulfurization slurry pump pump housing |
| CN107023490A (en) * | 2017-05-22 | 2017-08-08 | 江苏大学 | A kind of half-spiral inlet type double suction self priming pump |
-
2012
- 2012-11-19 CN CN 201220614119 patent/CN202914397U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104416259A (en) * | 2013-08-28 | 2015-03-18 | 上海凯泉泵业（集团）有限公司 | Welding process of water feed pump of nuclear power plant conventional island |
| CN104097037A (en) * | 2014-06-26 | 2014-10-15 | 哈尔滨电气动力装备有限公司 | Machining process for nuclear main pump guide blade of nuclear power station |
| CN106286396A (en) * | 2016-08-30 | 2017-01-04 | 柳州市酸王泵阀制造有限公司 | A kind of split type desulfurization slurry pump pump housing |
| CN107023490A (en) * | 2017-05-22 | 2017-08-08 | 江苏大学 | A kind of half-spiral inlet type double suction self priming pump |
| CN107023490B (en) * | 2017-05-22 | 2020-01-24 | 江苏大学 | Semi-spiral water inlet type double-suction self-sucking pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |