CN205297940U - On fill pump - Google Patents
On fill pump Download PDFInfo
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- CN205297940U CN205297940U CN201521042618.0U CN201521042618U CN205297940U CN 205297940 U CN205297940 U CN 205297940U CN 201521042618 U CN201521042618 U CN 201521042618U CN 205297940 U CN205297940 U CN 205297940U
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- pump
- cylinder
- fill
- impeller
- shaft
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Abstract
The utility model discloses an on fill pump is applicable to nuclear power generating sets, and this on fill pump contains: the barrel, the intake chamber and the pump cover of barrel both sides, the pump shaft is located to overlap in proper order from the drive end in the part of barrel and is equipped with chopped -off head impeller, secondary impeller, balance drum, the impeller outside sets up the stator, the stator outside sets up the middle section, set up the guide bearing on the stator, in the intake chamber outside, mechanical seal, journal bearing and shaft coupling set gradually on the non - drive end of pump shaft, be connected with outside drive device through the shaft coupling, in the pump cover outside, set gradually mechanical seal, thrust bearing and fan wheel on the pump shaft drive end. The utility model discloses can reduce the defect rate of part, reduce the pump maintenance requirement, reduce the vibration severity when moving, assurance equipment is stable at the safe and reliable at nuclear power station scene.
Description
Technical field
This utility model relates to nuclear power equipment technology field, is specifically related to a kind of fill pump suitable on ACP1000 nuclear power generating sets.
Background technology
On to fill pump be the important component part of upper charging system (RCV) in nuclear power station, filling pump on therefore is one of important safety equipment of nuclear power station, is also the key equipment of nuclear power station. On to fill pump be 2,3 grades of pumps of pressurized-water reactor nuclear power plant nuclear safety.
The same type of pump of current nuclear power station onsite application, as the part contacted with primary Ioops, needs thoroughly cleaning, and does not possess Drawing-Core design during maintenance. The guide bearing adopted is generally adopted rustless steel basic unit carbide-faced, hardness high but weak to dry grinding, dry bearing is had a degree of damage thus affecting the service life of bearing when starting. Vibration severity when field adjustable runs is higher, even if Repair is up to standard, also the safe and reliable operation of equipment is caused certain risk, the overall operation performance of nuclear power station is created certain impact.
Utility model content
The purpose of this utility model is in that in offer one to fill pump, it is possible to reduces the ratio of defects of part, reduces pump maintenance requirement, reduce vibration severity when running, it is ensured that equipment is safe and reliable stable nuclear power station scene.
In order to achieve the above object, the technical solution of the utility model is to provide in one and fills pump, comprise:
Cylinder;
It is arranged on the intake chamber of cylinder the first side;
It is arranged on the pump cover of cylinder the second side;
Pump shaft, the mid portion of this pump shaft is arranged in cylinder;
The mid portion of described pump shaft is arranged with successively first stage impeller, multistage secondary impeller, balancing drum from the first side to the second side;
The end of described pump shaft the first side is disposed with the first mechanical seal, journal bearing and shaft coupling after passing intake chamber, is connected with outside driving equipment by shaft coupling;
The end of described pump shaft the second side is disposed with the second mechanical seal, thrust bearing and blast fan after passing pump cover;
Wherein, described first side be on fill the drive end of pump;The anti-drive end of pump is filled on being in described second side.
Preferably, described intake chamber offering the water inlet filling pump, water inlet is provided with water-in flange;
The outlet filling pump on described is arranged on cylinder, and water outlet is configured with water-output flange;
Described water-in flange and water-output flange lay respectively at the both sides of cylinder.
Preferably, described secondary impeller has 11, and itself and first stage impeller are affixed, and collectively form the 12 grades of impellers filling pump; Described balancing drum is arranged on the second side of afterbody secondary impeller, is positioned the annular groove place of pump shaft.
Preferably, stator it is arranged with respectively outside described first stage impeller and secondary impeller at different levels;
Each stator is respectively arranged with guide bearing;
It is respectively arranged with stage casing outside each stator; It is provided with casing ring between described stage casing and corresponding first stage impeller or secondary impeller.
Preferably, described guide bearing is the bushing bearing of carbon graphite.
Preferably, described first mechanical seal, the second mechanical seal are integrated mechanical sealing;
The cyclone separator that the flushing water of the first mechanical seal is arranged on cylinder filters;
The flushing water of the second mechanical seal throttles from balancing drum.
Preferably, exhaust flange and tapping flange it are respectively provided with in the upper and lower of cylinder.
Preferably, prop up spike be connected with described cylinder by arranging pump, on fill pump and be fixed support.
Preferably, described cylinder, intake chamber and pump cover are made respectively through forging.
Preferably, described shaft coupling is cog-wheel coupling.
This utility model provides a kind of suitable in filling pump on nuclear power generating sets, and it compared with prior art has the advantage that structural design is compact, and hydraulic part design fluidised form is steady, and Inlet and outlet water housing adopts the method for forging to ensure the quality of part; Adopt carbon graphite guide bearing, wear-resisting and can pass through fine particle, medium self-lubricating, it is substantially reduced maintenance requirement, is effectively ensured the safety of this used in nuclear power station pump operation, reliably, stably.
Accompanying drawing explanation
Fig. 1 be described in the utility model on fill the overall structure generalized section of pump;
Fig. 2 be described in Fig. 1 on fill pump structure schematic top plan view.
Detailed description of the invention
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, this utility model is further elaborated.
As shown in Figure 1 and Figure 2, this utility model provides and fills pump in one, and this pump is horizontal cylinder bag sectional multi-stage centrifugal pump, and from motor drive terminal, pump rotation direction is counterclockwise, this fills pump and comprises: cylinder 1; It is arranged on the intake chamber 2 on the right side of cylinder 1; It is arranged on the pump cover 10 on the left of cylinder 1; Pump shaft 3, the mid portion of this pump shaft 3 is arranged in cylinder 1, and on the mid portion of described pump shaft 3, from the right side, a left side is arranged with first stage impeller 71, secondary impeller 72 and balancing drum 19 successively; Pump shaft 3 right-hand member is provided with journal bearing 5 after passing intake chamber 2, arranges shaft coupling 4 on the right side of journal bearing 5, is connected with the equipment of driving (such as motor) by shaft coupling 4; Pump shaft 3 left end arranges thrust bearing 11 after passing pump cover 10, arranges blast fan 12 on the left of thrust bearing 11.
Wherein, the side (left side in this example) at thrust bearing 11 place is the anti-drive end above filling pump, and the side (right side in this example) at journal bearing 5 place is the drive end above filling pump.
Preferably, described cylinder 1, intake chamber 2 and pump cover 10 are respectively adopted forging mode and manufacture.
Offering, on described intake chamber 2, the water inlet filling pump, water inlet is provided with water-in flange 21;On fill the outlet of pump and be arranged on the outside of cylinder 1, water outlet is configured with water-output flange 20. Described water-in flange 21 and water-output flange 20 lay respectively at the both sides of cylinder 1.
Preferably, described secondary impeller 72 has 11, and itself and first stage impeller 71 are affixed, and collectively form the 12 grades of impellers filling pump, and the suction bore of first stage impeller 71 is relatively big, and the number of blade is 5, improves cavitation of pump, to reach onsite application requirement.
Described balancing drum 19 is arranged on the left side of afterbody secondary impeller 72, is positioned the annular groove place of pump shaft 3, plays the effect of balancing axial thrust.
It is arranged with stator 81 respectively outside first stage impeller 71 and secondary impeller at different levels 72, plays and the liquid of impeller radial direction is transferred to axially, convert kinetic energy into the effect of pressure energy; Wherein, stator 81 sheathed outside afterbody secondary impeller 72 is called final stage stator 82, is additionally operable to collect within cylinder 1 impeller liquid out.
Described stator 81 is provided with guide bearing 18, pump operation process can support first stage impeller 71 and secondary impeller 72, play bearing effect. Described guide bearing 18 is specifically located between stator 81 and corresponding impeller. Preferred described guide bearing 18 is the bushing bearing of carbon graphite.
Having stage casing 9 in described stator 81 arranged outside, its liquid first stage impeller 71 and secondary impeller 72 flowed out together with stator 81 is by being radially converted to axially. Between described stage casing 9 and corresponding impeller, it is provided with casing ring 17, in order to prevent inter-stage from leaking, improves the efficiency of pump. Additionally, corresponding casing ring 17 can also be arranged between described first stage impeller 71 with intake chamber (suction chamber). Preferred described casing ring 17 is alveolate texture.
After described pump shaft 3 right-hand member passes cylinder 1, the arranged outside at intake chamber 2 has mechanical seal 61, and this mechanical seal 61 is positioned at the left side of journal bearing 5; Described pump shaft 3 left end is provided with mechanical seal 62 after passing cylinder 1 on the left of pump cover 10. Sealing function is played in described mechanical seal 61,62, it is possible to prevent liquid from cylinder 1 internal leakage.
Preferred described mechanical seal 61,62 is integrated mechanical sealing, single end face equilibrated type, and required flushing water carrys out self-pumping: the cyclone separator 16 that the flushing water of the mechanical seal 61 on right side is arranged on cylinder 1 filters; The flushing water of the mechanical seal 62 in left side throttles from balancing drum 19.
Exhaust flange 15 and tapping flange 14 it is respectively provided with in the upper and lower of cylinder 1. Prop up spike 13 be connected with described cylinder 1 by arranging pump, be used for fixing in support and fill pump.
The pump core packet portion of pump is filled, including intake chamber 2, thrust bearing 11 on described in the utility model, stator 81(at different levels are containing final stage stator 82), stage casing 9, impellers at different levels (containing first stage impeller 71 and secondary impeller 72), balancing drum 19, pump shaft 3, pump cover 10, journal bearing 5 parts such as grade, it is possible to overall extraction out from cylinder 1 and not influential system pipeline, greatly reduce the repair time, also make regular maintenance personnel's radioactive exposure can be reduced to floor level.
In this utility model, the design of pump shaft 3 considers very big allowance, it is ensured that can transmit moment of torsion required under different operating mode, and not produce excessive stress and vibration. Shaft coupling 4 adopts a point half a coupler, it is easier to assembly or disassembly pump, only need to by the Bolt dismantling on point half a coupler during dismounting, i.e. detachable jacket casing. Preferably, the shaft coupling 4 between pump and motor adopts cog-wheel coupling, with middle shaft coupling, and is furnished with the specific purpose tool that can radially remove shaft coupling 4 specially.Thus when not dismantling motor with regard to detachable bearing and mechanical seal, motor half a coupler and axle are interference fit.
Guide bearing 18 in this utility model is carbon graphite material. The advantage of this guide bearing is: wear-resisting, can pass through fine particle, medium self-lubricating, greatly reduce maintenance requirement, adopt other guide bearings (such as: match dragon, rubber etc.) can not do startup, need external flushing water before start, system pipeline and the unstable factor of pump itself certainly will be increased. And owing to carbon graphite bearing can effectively support rotor in running, reduce the vibration of pump.
Thrust bearing 11 is arranged on the left side of left end mechanical seal 62 by this utility model, participates in axial thrust and radial direction gravity in order to bear, and lubricating system is bath lubrication. This bearing is taper roll bearing, and oil temperature can by monitoring at bearing upper end one temperature thermal resistance of installation.
In sum, this utility model can reduce the ratio of defects of part, reduces pump maintenance requirement, reduces vibration severity when running, it is ensured that equipment is safe and reliable stable nuclear power station scene.
Although content of the present utility model has been made to be discussed in detail already by above preferred embodiment, but it should be appreciated that the description above is not considered as restriction of the present utility model. After those skilled in the art have read foregoing, multiple amendment of the present utility model and replacement all be will be apparent from. Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (10)
1. one kind is filled pump, it is characterised in that comprise:
Cylinder (1);
It is arranged on the intake chamber (2) of cylinder (1) first side;
It is arranged on the pump cover (10) of cylinder (1) second side;
Pump shaft (3), the mid portion of this pump shaft (3) is arranged in cylinder (1);
The mid portion of described pump shaft (3) is arranged with successively first stage impeller (71), multistage secondary impeller (72), balancing drum (19) from the first side to the second side;
The end of described pump shaft (3) first side is disposed with the first mechanical seal (61), journal bearing (5) and shaft coupling (4) after passing intake chamber (2), is connected with outside driving equipment by shaft coupling (4);
The end of described pump shaft (3) second side is disposed with the second mechanical seal (62), thrust bearing (11) and blast fan (12) after passing pump cover (10);
Wherein, described first side be on fill the drive end of pump; The anti-drive end of pump is filled on being in described second side.
2. on as claimed in claim 1, fill pump, it is characterised in that
Described intake chamber offers, on (2), the water inlet filling pump, and water inlet is provided with water-in flange (21);
The outlet filling pump on described is arranged on cylinder (1), and water outlet is configured with water-output flange (20);
Described water-in flange (21) and water-output flange (20) lay respectively at the both sides of cylinder (1).
3. on as claimed in claim 1, fill pump, it is characterised in that
Described secondary impeller (72) has 11, and itself and first stage impeller (71) are affixed, and collectively form the 12 grades of impellers filling pump;
Described balancing drum (19) is arranged on the second side of afterbody secondary impeller (72), is positioned the annular groove place of pump shaft (3).
4. on as claimed in claim 1, fill pump, it is characterised in that
Described first stage impeller (71) and secondary impeller at different levels (72) outside are arranged with stator (81) respectively;
Each stator (81) is respectively arranged with guide bearing (18);
Each stator (81) outside is respectively arranged with stage casing (9); It is provided with casing ring (17) between described stage casing (9) and corresponding first stage impeller (71) or secondary impeller (72).
5. on as claimed in claim 4, fill pump, it is characterised in that
Described guide bearing (18) is the bushing bearing of carbon graphite.
6. on as claimed in claim 1, fill pump, it is characterised in that
Described first mechanical seal (61), the second mechanical seal (62) are integrated mechanical sealing;
The flushing water of the first mechanical seal (61) filters through the upper cyclone separator (16) arranged of cylinder (1);
The flushing water of the second mechanical seal (62) throttles from balancing drum (19).
7. on as claimed in claim 1, fill pump, it is characterised in that
Exhaust flange (15) and tapping flange (14) it is respectively provided with in the upper and lower of cylinder (1).
8. on as claimed in claim 1, fill pump, it is characterised in that
Prop up spike (13) be connected with described cylinder (1) by arranging pump, on fill pump and be fixed support.
9. on as claimed in claim 1, fill pump, it is characterised in that
Described cylinder (1), intake chamber (2) and pump cover (10) are made respectively through forging.
10. on as claimed in claim 1, fill pump, it is characterised in that
Described shaft coupling (4) is cog-wheel coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042618.0U CN205297940U (en) | 2015-12-15 | 2015-12-15 | On fill pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042618.0U CN205297940U (en) | 2015-12-15 | 2015-12-15 | On fill pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297940U true CN205297940U (en) | 2016-06-08 |
Family
ID=56431951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521042618.0U Active CN205297940U (en) | 2015-12-15 | 2015-12-15 | On fill pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205297940U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351207A (en) * | 2015-12-15 | 2016-02-24 | 上海电气凯士比核电泵阀有限公司 | Charging pump |
| CN106567583A (en) * | 2016-10-18 | 2017-04-19 | 同济大学 | Particle damper with multi-mechanism energy dissipation function |
| WO2018050404A1 (en) * | 2016-09-15 | 2018-03-22 | Siemens Aktiengesellschaft | Single-shaft turbo compressor |
-
2015
- 2015-12-15 CN CN201521042618.0U patent/CN205297940U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351207A (en) * | 2015-12-15 | 2016-02-24 | 上海电气凯士比核电泵阀有限公司 | Charging pump |
| WO2018050404A1 (en) * | 2016-09-15 | 2018-03-22 | Siemens Aktiengesellschaft | Single-shaft turbo compressor |
| US11286948B2 (en) | 2016-09-15 | 2022-03-29 | Siemens Energy Global GmbH & Co. KG | Single-shaft turbo compressor |
| CN106567583A (en) * | 2016-10-18 | 2017-04-19 | 同济大学 | Particle damper with multi-mechanism energy dissipation function |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |