CN201714679U - Condensate pump for million-kilowatt super-critical thermal power generating unit - Google Patents
Condensate pump for million-kilowatt super-critical thermal power generating unit Download PDFInfo
- Publication number
- CN201714679U CN201714679U CN 201020250393 CN201020250393U CN201714679U CN 201714679 U CN201714679 U CN 201714679U CN 201020250393 CN201020250393 CN 201020250393 CN 201020250393 U CN201020250393 U CN 201020250393U CN 201714679 U CN201714679 U CN 201714679U
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- pump
- generating unit
- impeller
- power generating
- seat
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Abstract
The utility model relates to a pump used in a thermal power station, in particular to a condensate pump for a million-kilowatt super-critical thermal power generating unit, which comprises a pump cylinder body, a pump shaft, multiple stages of impellers, connecting pipes, a discharge seat and a bearing support, wherein the bottom end of the pump cylinder body is closed, and the top end thereof is connected with one end of the discharge seat by a flange; the other end of the discharge seat is connected with the bearing support; the pump shaft is arranged in an interior space formed by the bearing support, the discharge seat and the pump cylinder body; one end of the pump shaft is arranged on the bearing support and connected on a motor, and the other end thereof is provided with the multiple stages of impellers; each stage of impeller is provided with a diversion shell, and all stages of diversion shells are connected and then communicated with the discharge seat by the connecting pipes; and the pump cylinder body and the discharge seat are respectively provided with a suction inlet and a discharge port. The condensate pump meets the requirement of the million-kilowatt super-critical thermal power generating unit, and fulfils the zero breakthrough of large-capacity condensate pumps for thermal power stations.
Description
Technical field
The utility model relates to thermal power station's pump, specifically a kind of gigawatt ultra supercritical fired power generating unit condensate pump.
Background technique
Ultra supercritical fired power generating unit condensate pump is the visual plant of thermal power station, and in a plurality of thermal power stations at home and abroad, ultra supercritical fired power generating unit condensate pump has become indispensable equipment.But in present existing ultra supercritical fired power generating unit condensate pump, the capacity of generator set at most only is 600,000 kilowatts, and, needing jumbo fired power generating unit nowadays according to the development of thermal power station, existing ultra supercritical fired power generating unit condensate pump can not satisfy the demand of development; Therefore, develop jumbo generator set and become problem demanding prompt solution.
The model utility content
The purpose of this utility model is to provide a kind of development need that satisfies, the gigawatt ultra supercritical fired power generating unit condensate pump that unit capacity is big.
The purpose of this utility model is achieved through the following technical solutions:
The utility model comprises pump barrel body, pump shaft, multi-stage impeller, take over, spue seat and bearing bracket, the wherein bottom of pump barrel body sealing, and the top links to each other by the end of flange with the seat that spues, and the other end of the seat that spues is connected with bearing bracket; Described pump shaft is installed in by in bearing bracket, spue seat and the inner space that forms of pump barrel body, and an end of pump shaft is installed on the bearing bracket and with motor and links to each other, and the other end of pump shaft is provided with multi-stage impeller; Every grade of impeller is equipped with blower inlet casing, and blower inlet casings at different levels connect the back and are communicated with by taking over the seat that spues; On the pump barrel body and the seat that spues, be respectively equipped with suction port and discharge opening.
Wherein: the first stage impeller in the described multi-stage impeller is the double suction form, and secondary impeller to impeller is the single suction form, and secondary impeller and impeller are general; Blower inlet casings at different levels form diversion space in the periphery of impeller, and the chopped-off head blower inlet casing is a spiral-shell, and secondary blower inlet casing to final stage blower inlet casing is the bowl-type shell; The outer wall of final stage blower inlet casing is evenly equipped with three cross-brace plates that are fixed on pump barrel body inwall; , tight between the blower inlet casings at different levels by the bolt handle by the seam location; Described pump shaft is divided into two, is connected by coupling, and each root axle is equipped with the middle bearing bracket of radial support, and the water lubrication guide bearing that is enclosed within on the axle is installed on this middle bearing bracket; The top of described pump shaft is installed on the bearing bracket by thrust-bearing, is being provided with the axle envelope that is installed on the pump shaft below the thrust-bearing, and pump shaft is by axle envelope and bearing bracket sealing; Described pump shaft is provided with and is installed in a other end that spues, balance pump shaft balance of axial force drum; Be respectively equipped with sealed letter body, relief hole on the described seat that spues and take off steam vent; Angle between described suction port and the discharge opening is 15 ° a integral multiple.
Advantage of the present utility model and good effect are:
1. the utility model has satisfied the requirement of gigawatt ultra supercritical fired power generating unit, has realized thermal power station's big capacity condensate pump breakthrough of zero.
2. first stage impeller of the present utility model is the double suction form, secondary to impeller be the single suction form; The chopped-off head blower inlet casing is a spiral-shell, secondary to the final stage blower inlet casing be the bowl-type shell, make the loss of liquid drop to minimum, flow velocity is more steady.
The utility model final stage blower inlet casing outer wall circumferentially uniform three cross-brace plates, played the effect of radial support, prevent teeter.
4. pump shaft of the present utility model is divided into two, all is provided with middle bearing bracket on the every axle, and the water lubrication guide bearing has been installed in middle bearing bracket, radial force that can the bearing pump rotor.
5. the axial force of the utility model pump generation can balance 95% by balancing drum, and residual axial force is born by thrust-bearing, and pump shaft is stressed little, and is not fragile.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Wherein: 1 is the pump barrel body, and 2 is pump shaft, and 3 for taking over, and 4 for spuing seat, 5 is electric machine support, and 6 is thrust-bearing, and 7 is the axle envelope, and 8 is discharge opening, 9 is bearing bracket, and 10 is balancing drum, and 11 is suction port, and 12 is middle bearing bracket, 13 is coupling, and 14 is the water lubrication guide bearing, and 15 is the cross-brace plate, and 16 is first stage impeller, 17 is the chopped-off head blower inlet casing, and 18 is secondary impeller, 19 level blower inlet casings, and 20 is three grades of impellers, 21 is three grades of blower inlet casings, and 22 is impeller, and 23 is the final stage blower inlet casing.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model comprises pump barrel body 1, pump shaft 2, multi-stage impeller, adapter 3, seat 4, electric machine support 5 and bearing bracket 9 spue, wherein pump barrel body 1 is the circular cylinder body of being made by the Fine Steel Casting iron coil weld, the bottom sealing of pump barrel body 1, the top links to each other by the end of flange with the seat 4 that spues, and the other end of the seat 4 that spues is connected with bearing bracket 9; Pump barrel body 1 is a double-layer shell structure, in order to constitute the outer pressure chamber of double Shell pump, is in negative pressure state during proper functioning in the chamber.Pump shaft 2 is installed in by in bearing bracket 9, spue seat 4 and the inner space that forms of pump barrel body 1, one end of pump shaft 2 is installed on the bearing bracket 9 by thrust-bearing 6, and be connected with an end of transmission shaft with fixed cover by cutting ferrule, the other end of transmission shaft links to each other with the output shaft of motor with elastic dowel pin shaft coupling or rigid coupling, and the other end of pump shaft 2 is provided with multi-stage impeller.In pump shaft 2 contacting point, be provided with the balancing drum 10 that is installed on the seat 4 that spues, the axial force that this balancing drum 10 can balance pump shaft 2 with seat 4 the other ends that spue.Pump shaft 2 between described balancing drum 10 and the thrust-bearing 6 is provided with axle envelope 7, and pump shaft 2 prevents leaked water by axle envelope 7 and bearing bracket 9 sealings; Axle envelope 7 can be packing seal or mechanism's sealing.Pump shaft 2 is divided into two, is connected by coupling 13, and this coupling 13 is the snap ring muff coupling; Be equipped with the middle bearing bracket 12 that plays the radial support effect on each root axle, the water lubrication guide bearing 14 that is enclosed within on the axle is installed on this middle bearing bracket 12.Impeller is the core parts that the transformation of energy of prime mover become the pumping liquid energy, the multi-stage impeller of present embodiment is respectively first stage impeller 17, secondary impeller 19, three grades of impellers 21, impeller 23, arrange in the same way and constitute pump rotor, the periphery of each grade impeller is respectively equipped with blower inlet casing, be chopped-off head blower inlet casing 18, secondary blower inlet casing 20, three grades of blower inlet casings 22 and final stage blower inlet casings 24, blower inlet casings at different levels are trapped among the peripheral diversion space that forms of impeller; The effect of blower inlet casing is to enter the next stage impeller equably after will flowing out the guiding fluid of impeller with the loss of minimum, between the blower inlet casings at different levels by the seam location, and then with bolt tightly; Final stage blower inlet casing 24 4 is communicated with the seat that spues by taking over 3 again.The first stage impeller 17 of present embodiment is the double suction form, and secondary impeller 19, three grades of impellers 21 and impeller 23 are the single suction form, and secondary impeller 19 is general with impeller 23; Chopped-off head blower inlet casing 18 is a spiral-shell, and secondary blower inlet casing 20, three grades of blower inlet casings 22 and final stage blower inlet casing 24 are the bowl-type shell.Outer wall at final stage blower inlet casing 24 is evenly equipped with three cross-brace plates 15 that are fixed on pump barrel body 1 inwall, prevents teeter.Side at pump barrel body 1 is provided with suction port 11, and the seat 4 that spues is provided with discharge opening 8, and the angle between suction port 11 and the discharge opening 8 is 15 ° a integral multiple, and present embodiment is 180 ° of horizontal arrangement.The seat that spues is respectively equipped with sealed letter body, relief hole and takes off steam vent on 4, and relief hole takes off steam vent in order to the gas in the pump barrel body is in time drained into vapour condenser in order to the shaft seal cavity internal pressure is minimized; The sealing water pipe is connected to the sealed letter body by discharge opening, also is provided with the water lubrication guide bearing in the sealed letter body, and water lubrication guide bearing 14 in the middle bearing bracket 13 and the water lubrication guide bearing in the sealed letter body are in order to bear the radial force of pump shaft 2.Pump shaft 2 is transmitting whole loads of rotor again both as the carrier of impeller; The axial force that pump produces balances 95% by balancing drum 10, and all the other residual axial force are born by thrust-bearing 6 or axial force is all born by motor.
Working principle of the present utility model is:
Machine operation drives pump shaft 2 rotations by transmission shaft, and the impellers at different levels on the pump shaft 2 are with pump shaft 2 rotations; Water is entered in the pump barrel body 1 by suction port 11,, continues upwards to flow by first stage impeller 17, secondary impeller 19, three grades of impellers 21 and impellers 23 through successively, is flowed out by discharge opening 8.
The flange on the utility model pump barrel body top can increase the handle and the intensity of pump; Adopt the bolt of overstriking to connect between adapter 3 and the final stage blower inlet casing 24; The assembling moment of bolts and nuts is 548Nm; The material of water lubrication guide bearing 114 is AC-3; First critical speed of rotation of impellers at different levels is 2746 rev/mins, and critical speed of second order is 4230 rev/mins; The material of balancing drum is RWA350; The linear velocity of mechanical seal is 632m/min; Thrust-bearing 6 adopts heavily loaded model 7338BCBM.
Claims (9)
1. gigawatt ultra supercritical fired power generating unit condensate pump, it is characterized in that: comprise pump barrel body (1), pump shaft (2), multi-stage impeller, adapter (3), spue the seat (4) and a bearing bracket (9), the wherein bottom of pump barrel body (1) sealing, the top links to each other by the end of flange with the seat (4) that spues, and the other end of the seat (4) that spues is connected with bearing bracket (9); Described pump shaft (2) is installed in the inner space that is formed by bearing bracket (9), spue seat (4) and pump barrel body (1), and an end of pump shaft (2) is installed on the bearing bracket (9) and with motor and links to each other, and the other end of pump shaft (2) is provided with multi-stage impeller; Every grade of impeller is equipped with blower inlet casing, and blower inlet casings at different levels connect the back and are communicated with the seat (4) that spues by taking over (3); On the pump barrel body (1) and the seat (4) that spues, be respectively equipped with suction port (11) and discharge opening (8).
2. by the described gigawatt ultra supercritical of claim 1 fired power generating unit condensate pump, it is characterized in that: the first stage impeller in the described multi-stage impeller is the double suction form, and secondary impeller to impeller is the single suction form, and secondary impeller and impeller are general; Blower inlet casings at different levels form diversion space in the periphery of impeller, and the chopped-off head blower inlet casing is a spiral-shell, and secondary blower inlet casing to final stage blower inlet casing is the bowl-type shell.
3. by the described gigawatt ultra supercritical of claim 2 fired power generating unit condensate pump, it is characterized in that: the outer wall of described final stage blower inlet casing is evenly equipped with three cross-brace plates (15) that are fixed on pump barrel body (1) inwall.
4. by the described gigawatt ultra supercritical of claim 2 fired power generating unit condensate pump, it is characterized in that:, tight between the described blower inlet casings at different levels by the bolt handle by the seam location.
5. by the described gigawatt ultra supercritical of claim 1 fired power generating unit condensate pump, it is characterized in that: described pump shaft (2) is divided into two, be connected by coupling (13), each root axle is equipped with the middle bearing bracket (12) of radial support, and the water lubrication guide bearing (14) that is enclosed within on the axle is installed on this middle bearing bracket (12).
6. by the described gigawatt ultra supercritical of claim 1 fired power generating unit condensate pump, it is characterized in that: the top of described pump shaft (2) is installed on the bearing bracket (9) by thrust-bearing (6), be provided with the axle envelope (7) that is installed on the pump shaft (2) in the below of thrust-bearing (6), pump shaft (2) is by axle envelope (7) and bearing bracket (9) sealing.
7. by the described gigawatt ultra supercritical of claim 1 fired power generating unit condensate pump, it is characterized in that: described pump shaft (2) is provided with and is installed in spue seat (4) the other end, balance pump shaft (2) balance of axial force drum (10).
8. by the described gigawatt ultra supercritical of claim 1 fired power generating unit condensate pump, it is characterized in that: be respectively equipped with sealed letter body, relief hole and take off steam vent on the described seat (4) that spues.
9. by the described gigawatt ultra supercritical of claim 1 fired power generating unit condensate pump, it is characterized in that: the angle between described suction port (11) and the discharge opening (8) is 15 ° a integral multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020250393 CN201714679U (en) | 2010-07-07 | 2010-07-07 | Condensate pump for million-kilowatt super-critical thermal power generating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020250393 CN201714679U (en) | 2010-07-07 | 2010-07-07 | Condensate pump for million-kilowatt super-critical thermal power generating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714679U true CN201714679U (en) | 2011-01-19 |
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ID=43460675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020250393 Expired - Lifetime CN201714679U (en) | 2010-07-07 | 2010-07-07 | Condensate pump for million-kilowatt super-critical thermal power generating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714679U (en) |
Cited By (8)
| 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 |
| CN102606540A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Water pump for factory for nuclear power station |
| CN105090065A (en) * | 2015-08-04 | 2015-11-25 | 芜湖环球汽车配件有限公司 | Condensation pump |
| CN105134640A (en) * | 2015-08-14 | 2015-12-09 | 上海深井泵厂股份有限公司 | Self-lubricating bearing for vertical long-shaft pump |
| CN105422463A (en) * | 2015-12-31 | 2016-03-23 | 镇江江大泵业科技有限公司 | Condensate pump for large thermal power plant |
| CN106401985A (en) * | 2016-12-09 | 2017-02-15 | 江苏大学 | Ship desulfurization pump |
| CN106438378A (en) * | 2016-12-09 | 2017-02-22 | 江苏大学 | Vertical carbon disulfide pump for chemical cargo ships |
| CN106567852A (en) * | 2016-11-17 | 2017-04-19 | 武汉船用机械有限责任公司 | Transmission shafting of immersed pump |
-
2010
- 2010-07-07 CN CN 201020250393 patent/CN201714679U/en not_active Expired - Lifetime
Cited By (10)
| 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 |
| CN102606540A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Water pump for factory for nuclear power station |
| CN102606540B (en) * | 2012-03-27 | 2014-04-09 | 上海阿波罗机械股份有限公司 | Water pump for factory for nuclear power station |
| CN105090065A (en) * | 2015-08-04 | 2015-11-25 | 芜湖环球汽车配件有限公司 | Condensation pump |
| CN105134640A (en) * | 2015-08-14 | 2015-12-09 | 上海深井泵厂股份有限公司 | Self-lubricating bearing for vertical long-shaft pump |
| CN105422463A (en) * | 2015-12-31 | 2016-03-23 | 镇江江大泵业科技有限公司 | Condensate pump for large thermal power plant |
| CN106567852A (en) * | 2016-11-17 | 2017-04-19 | 武汉船用机械有限责任公司 | Transmission shafting of immersed pump |
| CN106401985A (en) * | 2016-12-09 | 2017-02-15 | 江苏大学 | Ship desulfurization pump |
| CN106438378A (en) * | 2016-12-09 | 2017-02-22 | 江苏大学 | Vertical carbon disulfide pump for chemical cargo ships |
| CN106438378B (en) * | 2016-12-09 | 2019-01-25 | 江苏大学 | A kind of chemicals marine vertical carbon disulfide pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG BLOWER WORKS GROUP CORPORATION Free format text: FORMER OWNER: SHENYANG BLOWER WORKS GROUP CO., LTD. Effective date: 20110831 Owner name: SHENYANG TOUPING MACHINERY CO., LTD. SHENYANG BLOW Free format text: FORMER OWNER: SHENYANG TOUPING MACHINERY CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 110142 SHENYANG, LIAONING PROVINCE TO: 110869 SHENYANG, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110831 Address after: 110869 Shenyang economic and Technological Development Zone, Liaoning development road, a No. 16 Co-patentee after: Shenyang Turbo Machinery Co., Ltd. Patentee after: Shenyang Blower Works Group Corporation Co-patentee after: Shenyang Blower Works Group Nuclear Power Pump Co., Ltd. Address before: 110142, No. 16, development road, Shenyang economic and Technological Development Zone, Liaoning, China Co-patentee before: Shenyang Turbo Machinery Co., Ltd. Patentee before: Shenyang Blower Works Group Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG BLOWER WORKS GROUP NUCLEAR POWER PUMP CO. Free format text: FORMER OWNER: SHENYANG BLOWER WORKS GROUP CORPORATION Effective date: 20120328 Free format text: FORMER OWNER: SHENYANG TOUPING MACHINERY CO., LTD. SHENYANG BLOWER WORKS GROUP NUCLEAR POWER PUMP CO., LTD. Effective date: 20120328 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120328 Address after: 110869 Shenyang economic and Technological Development Zone, Liaoning development road, a No. 16 Patentee after: Shenyang Blower Works Group Nuclear Power Pump Co., Ltd. Address before: 110869 Shenyang economic and Technological Development Zone, Liaoning development road, a No. 16 Co-patentee before: Shenyang Turbo Machinery Co., Ltd. Patentee before: Shenyang Blower Works Group Corporation Co-patentee before: Shenyang Blower Works Group Nuclear Power Pump Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |
|
| CX01 | Expiry of patent term |