CN201671825U - Boiler feed pump - Google Patents
Boiler feed pump Download PDFInfo
- Publication number
- CN201671825U CN201671825U CN2010201946821U CN201020194682U CN201671825U CN 201671825 U CN201671825 U CN 201671825U CN 2010201946821 U CN2010201946821 U CN 2010201946821U CN 201020194682 U CN201020194682 U CN 201020194682U CN 201671825 U CN201671825 U CN 201671825U
- Authority
- CN
- China
- Prior art keywords
- boiler feed
- impeller
- pump
- feed pump
- stage casing
- Prior art date
- 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 - Fee Related
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Abstract
The utility model discloses a boiler feed pump and relates to the field of a water pump. The boiler feed pump comprises a stator component, a rotor component and a bracket for supporting the stator component and the rotor component. The stator component comprises a water inlet segment, a middle segment, a water outlet segment and thrust bearing devices, which are connected into one body by a bolt and a nut. The rotor component comprises a shaft and a sealing shaft sleeve, impellers and a balancing drum which are arranged on the shaft, wherein a sealing roll, the sealing shaft sleeve, the impellers and the balancing drum are locked on the shaft by a shaft end nut; the impellers are multilevel impellers; the middle segment is a multilevel middle segment; the outsides of the middle segment on the tail ends are connected with a pump cover; the balancing drum is arranged outside the pump cover; each impeller is arranged in one corresponding middle segment or in the middle segment and the pump cover; and the thrust bearing devices are respectively arranged at both ends of the shaft. By adopting the structure, the boiler feed pump of the utility model has the advantages of excellent cavitation performance, long service life, low cost and easy popularization and application.
Description
[technical field]
The utility model relates to water pump, particularly with the matching used boiler feed pump of large-scale thermal power machine group.
[background technique]
Present boiler feed pump all disposes the low speed front-mounted pump for preventing cavitation, makes that so not only the complexity of thermal power generation system increases, reliability reduces, and has also increased engineering cost simultaneously.Some producers are not provided with front-mounted pump for this reason, and adopt multi-stage impeller and inducer to solve the cavitation problem.But the progression of the pump volume of pump more for a long time also increases thereupon, so not only makes the volume of pump bigger than normal, also causes waste of material.In addition because the axial force of multistage pump is every grade of axial force of impeller sum, balance of axial force generally all adopts Balance disc on multistage pump, Balance disc not only can reach balance fully under declared working condition, even under the variable working condition situation, axial force also can autobalance.But the complete equilibrium of axial force, be not that rotor is fixed on a certain position, but transmission before and after this position upper frequency very highland, this just makes the Balance disc end face clash under very high frequency, thereby cause the heavy wear of Balance disc end face, the life-span of pump is reduced greatly.
Therefore, be necessary to invent a kind of novel boiler feed pump, to overcome above-mentioned defective.
[model utility content]
The purpose of this utility model provides a kind of boiler feed pump with good cavitation performance, long service life.
For achieving the above object, the technical solution of the utility model is: a kind of boiler feed pump, comprise stator component, rotor part reaches the carriage in order to support stator parts and rotor part, described stator component comprises inlet segment, the stage casing, water exit end, thrust bearing device also passes through screw, nut joins together, described rotor part comprises axle and is arranged on sealing axle sleeve on the axle, impeller, balancing drum, sealing axle sleeve wherein, impeller, balancing drum is locked on the axle by shaft end nut, described impeller is a multi-stage impeller, described stage casing is multistage stage casing, the outside, stage casing at end, two ends is connected with pump cover, described balancing drum is arranged at the pump cover outside, each impeller is arranged in the stage casing or stage casing and pump cover of one section correspondence, and described thrust bearing device is arranged at the two ends of axle respectively.
Wherein between described balancing drum and pump cover, also accompany gimbal.
Wherein said thrust bearing device comprises the bearing spider of thrust-bearing and support thrust bearing, and bearing spider is connected with carriage respectively.
Wherein said each grade impeller outer is provided with stator, is provided with the stator cover between stator and impeller, is provided with seal ring between impeller and stage casing or pump cover.
Be provided with between wherein said stator and stage casing or pump cover in order to fixing pin or pin.
Wherein said pump cover and between centers are provided with seal arrangement, and seal arrangement comprises mechanical seal and machine end-blocking lid.
Be connected with the balancing pipeline parts between wherein said inlet segment and water exit end.
Because adopt said structure, the boiler feed pump of the utility model has following beneficial effect:
1. have good cavitation performance, long service life
The boiler feed pump of the utility model is owing to adopt multi-stage impeller, and each impeller is equipped with stator, and be provided with balancing drum and thrust bearing device, except the whole thrusts of balancing drum balance 85%, 15% remaining thrust is born by thrust-bearing, thereby improved the working life of pump, also made pump have good cavitation.
Cost low, be easy to apply
The boiler feed pump of the utility model is owing to only increase the working life that balancing drum and thrust bearing device device etc. can increase pump, and cost is low, be easy to apply.
[description of drawings]
Fig. 1 is the structural representation of the utility model boiler feed pump.
Fig. 2 is the side view of the utility model boiler feed pump.
The primary component label declaration:
The 1-thrust bearing device, 2-axle, 3-sealing axle sleeve, 4-impeller, 5-balancing drum, the 6-pump cover, 9-mechanical seal, 10-machine end-blocking lid, 11-thrust-bearing, the 12-bearing spider, 13-carriage, 15-inlet segment, 17-balancing pipeline parts, the 18-seal ring, 19-stator, 20-stage casing, 21-pin, 22-stator cover, 23-seal ring, 26-pin, 27-water exit end, the 29-gimbal, 37-thrust bearing device, 45-water sealing (sealing water) pipe parts, 48-turnbuckle.
[embodiment]
Below in conjunction with drawings and Examples the utility model boiler feed pump is further described.
Please refer to shown in Figure 1, the utility model boiler feed pump comprises stator component, rotor part reaches the carriage 13 in order to support stator parts and rotor part, described stator component comprises inlet segment 15, stage casing 20, water exit end 27, thrust bearing device also passes through screw, nut joins together, described rotor part comprises axle 2 and is arranged on the sealing axle sleeve 3 of axle on 2, impeller 4, balancing drum 5, sealing axle sleeve wherein, impeller, balancing drum is locked on the axle by shaft end nut, described impeller 4 is a multi-stage impeller, described stage casing 20 is multistage stage casing, the outside, stage casing at end, two ends is connected with pump cover 6, balancing drum 5 is arranged at pump cover 6 outsides, each impeller 4 is arranged in the stage casing 20 or stage casing 20 and pump cover 6 of one section correspondence, described thrust bearing device 1,37 are arranged at the two ends of axle 2 respectively.
Also accompany gimbal 29 at described balancing drum 5 and 6 of pump covers.Described thrust bearing device comprises the bearing spider 12 of thrust-bearing 11 and support thrust bearing, and bearing spider 12 is connected with carriage 13 respectively.Described each grade impeller outer is provided with stator 19, and 4 in stator 19 and impeller are provided with stator cover 22, and 6 of impeller 4 and stage casing 20 or pump covers are provided with seal ring 18,23.6 of described stator 19 and stage casing 20 or pump covers are provided with in order to fixing pin 21 or pin 26.Described pump cover 6 and 2 on axle are provided with seal arrangement, and seal arrangement comprises mechanical seal 9 and machine end-blocking lid 10.27 of described inlet segment 15 and water exit ends are connected with balancing pipeline parts 17.Pump cover 6 bottoms at two ends are connected with turnbuckle 48 and water sealing (sealing water) pipe parts 45.
The utility model boiler feed pump is mainly used in the following middle and high pressure boiler feed water of 100MW.Boiler feed pump is by the direct transmission of motor, and rotating speed is 2950r/min, and according to user's needs, the kind of drive also can be by small turbine and fluid coupling transmission.The utility model boiler feed pump operating temperature is respectively 105 ℃ and 150 ℃, and outlet pressure is respectively 55kg/cm
2, 150kg/cm
2
Claims (7)
1. boiler feed pump, comprise stator component, rotor part reaches the carriage in order to support stator parts and rotor part, it is characterized in that, described stator component comprises inlet segment, the stage casing, water exit end, thrust bearing device also passes through screw, nut joins together, described rotor part comprises axle and is arranged on sealing axle sleeve on the axle, impeller, balancing drum, sealing axle sleeve wherein, impeller, balancing drum is locked on the axle by shaft end nut, described impeller is a multi-stage impeller, described stage casing is multistage stage casing, the outside, stage casing at end, two ends is connected with pump cover, described balancing drum is arranged at the pump cover outside, each impeller is arranged in the stage casing or stage casing and pump cover of one section correspondence, and described thrust bearing device is arranged at the two ends of axle respectively.
2. boiler feed pump as claimed in claim 1 is characterized in that: also accompany gimbal between described balancing drum and pump cover.
3. boiler feed pump as claimed in claim 2 is characterized in that: described thrust bearing device comprises the bearing spider of thrust-bearing and support thrust bearing, and bearing spider is connected with carriage respectively.
4. boiler feed pump as claimed in claim 3 is characterized in that: described each grade impeller outer is provided with stator, is provided with the stator cover between stator and impeller, is provided with seal ring between impeller and stage casing or pump cover.
5. boiler feed pump as claimed in claim 4 is characterized in that: be provided with between described stator and stage casing or pump cover in order to fixing pin or pin.
6. boiler feed pump as claimed in claim 5 is characterized in that: described pump cover and between centers are provided with seal arrangement, and seal arrangement comprises mechanical seal and machine end-blocking lid.
7. boiler feed pump as claimed in claim 6 is characterized in that: be connected with the balancing pipeline parts between described inlet segment and water exit end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201946821U CN201671825U (en) | 2010-05-14 | 2010-05-14 | Boiler feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201946821U CN201671825U (en) | 2010-05-14 | 2010-05-14 | Boiler feed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201671825U true CN201671825U (en) | 2010-12-15 |
Family
ID=43329237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201946821U Expired - Fee Related CN201671825U (en) | 2010-05-14 | 2010-05-14 | Boiler feed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201671825U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402137A (en) * | 2015-12-31 | 2016-03-16 | 镇江江大泵业科技有限公司 | Balanced type single-suction multistage sectional centrifugal pump |
| CN108506217A (en) * | 2018-03-29 | 2018-09-07 | 芜湖长捷航空动力科技有限责任公司 | A kind of multistage combined centrifugal water pump |
-
2010
- 2010-05-14 CN CN2010201946821U patent/CN201671825U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402137A (en) * | 2015-12-31 | 2016-03-16 | 镇江江大泵业科技有限公司 | Balanced type single-suction multistage sectional centrifugal pump |
| CN108506217A (en) * | 2018-03-29 | 2018-09-07 | 芜湖长捷航空动力科技有限责任公司 | A kind of multistage combined centrifugal water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20120514 |