CN103883509A - High-flow feed pump double-driving speed increasing type speed regulating system - Google Patents
High-flow feed pump double-driving speed increasing type speed regulating system Download PDFInfo
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- CN103883509A CN103883509A CN201410135992.9A CN201410135992A CN103883509A CN 103883509 A CN103883509 A CN 103883509A CN 201410135992 A CN201410135992 A CN 201410135992A CN 103883509 A CN103883509 A CN 103883509A
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Abstract
A high-flow feed pump double-driving speed increasing type speed regulating system comprises a differential gear box, wherein a first input shaft of the differential gear box is connected with an output shaft of a main motor through a first brake, a second input shaft of the differential gear box is connected with an output shaft of a variable frequency motor through a second brake, an output shaft of the differential gear box is connected with a driving shaft of a feed pump, the first input shaft of the differential gear box is connected with an inner gear ring of a planetary mechanism, the inner gear ring is connected with a planetary carrier, the second input shaft of the differential gear box is connected with the planetary carrier through a gear, the planetary carrier is connected with a sun wheel, and the sun wheel is connected with the driving shaft of the feed pump through the output shaft of the differential gear box. The high-flow feed pump double-driving speed increasing type speed regulating system adopts a differential speed-increase gearbox, and combines the speed and power of the main motor with constant rotation speed with the speed and power of the variable frequency speed regulating motor, and forms the output of the speed and the power capable of being adjusted in a certain range, thereby meeting working requirements of the feed pump.
Description
Technical field
The present invention relates to a kind of boiler feed pump speed control system, relate in particular to a kind of large flow feed water pump Dual Drive acceleration type speed control system.
Background technique
Boiler feed pump is the important supplementary equipment of the one in thermal power plant.Along with popularizing of Electricity Generation unit application, the power of heavy duty boiler feed pump also increases thereupon, and, be the fluctuation and the variation that adapt to load in power generation process, require boiler feed pump regulation output flow at any time, to keep the water level of water bag in water supply system in allowed band.Regulating the most economical method of feed water pump flow is the working speed that regulates water pump, at present, conventional feed water pump speed regulating method is generally the several different methods such as the planetary pinion speed governing that speed regulation type hydrodynamic coupler speed governing, Steam Turbine Driven speed governing, high-voltage frequency conversion and speed-adjusting, hydraulic couplers and planetary cross-country power mechanism be complex as a whole.The shortcoming of first two speed regulating method is that efficiency is lower, and adopts when steam turbine speed control system maintenance work amount also larger.The shortcoming of high-voltage variable-frequency and variable-speed system is that cost is higher, and easily produces harmonic pollution, affects other equipment of unit and normally works.Last a kind of arrangements for speed regulation are external product, expensive, the inconvenience of maintenance standby redundancy, and also overall power loss is also bigger than normal.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of large flow feed water pump Dual Drive acceleration type speed control system, the speed and the power stage that regulate within the specific limits, thus meet the job requirement of feed water pump.
In order to achieve the above object, the technological scheme that the present invention takes is:
A kind of large flow feed water pump Dual Drive acceleration type speed control system, comprise differential case 3, the first input shaft 14 of differential case 3 is connected with the output shaft of main motor 1 by the first break 2, the second input shaft 7 of differential case 3 is connected with the output shaft of variable-frequency motor 5 by second brake 6, and differential case output shaft 12 is connected with the live axle of feed water pump 4.
The first input shaft 14 of described differential case 3 and the ring gear 10 of planetary mechanism are connected, and ring gear 10 is connected with planet carrier 9, and the second input shaft 7 of described differential case 3 is connected with planet carrier 9 by gear 8;
Beneficial effect of the present invention: adopt a differential speed accelerating case, speed and the power of the speed of the main motor of an invariablenes turning speed and power and a frequency control motor are combined, form the speed that can regulate within the specific limits and power stage, thereby meet the job requirement of feed water pump.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of differential case 3 of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
See figures.1.and.2, a kind of large flow feed water pump Dual Drive acceleration type speed control system, comprise differential case 3, the first input shaft 14 of differential case 3 is connected with the output shaft of main motor 1 by the first break 2, the second input shaft 7 of differential case 3 is connected with the output shaft of variable-frequency motor 5 by second brake 6, and differential case output shaft 12 is connected with the live axle of feed water pump 4.
With reference to Fig. 2, the first input shaft 14 of described differential case 3 and the ring gear 10 of planetary mechanism are connected, and ring gear 10 is connected with planet carrier 9; The second input shaft 7 of described differential case 3 is connected with planet carrier 9 by gear 8;
The principle of organizing altogether of the present invention is:
Can separate transmission in the situation of the road braking therein of two speed transfer routes between main motor 1 and variable-frequency motor 5 and feed water pump 4.In the time that the first break 2 of main motor 1 output terminal is braked, variable-frequency motor 5 can drive separately feed water pump 4 to work by differential case 3.This function can water supply pump 4 low speed starting and maintenance.In the time that variable-frequency motor 5 is braked, main motor 1 can be worked by differential case 3 drive feed water pumps 4.
In the time that main motor 1 and variable-frequency motor 5 are worked simultaneously, the working speed of feed water pump 4 and power are exactly the synthetic of the speed of these two motors while working independently and power, by adjusting the output speed of variable-frequency motor 5, the operating rate of feed water pump 4 just can realize within the specific limits and changing continuously, so just can meet the technological requirement of feed water pump 4 rotational speed regulation.
Dual Drive acceleration type speed-adjusting driving system is applicable to the rotational speed regulation of the similar devices such as large flow, high-power and high-revolving feed water pump, compressor.
Claims (2)
1. a large flow feed water pump Dual Drive acceleration type speed control system, comprise differential case (3), it is characterized in that: first input shaft (14) of differential case (3) is connected with the output shaft of main motor (1) by the first break (2), second input shaft (7) of differential case (3) is connected with the output shaft of variable-frequency motor (5) by second brake (6), and differential case output shaft (12) is connected with the live axle of feed water pump (4).
2. the large flow feed water pump of one according to claim 1 Dual Drive acceleration type speed control system, it is characterized in that: first input shaft (14) of described differential case (3) and the ring gear (10) of planetary mechanism are connected, ring gear (10) is connected with planet carrier (9), and second input shaft (7) of described differential case (3) is connected with planet carrier (9) by gear (8);
Planet carrier (9) is connected with sun gear (13), and sun gear (13) is connected with the live axle of feed water pump (4) by differential case output shaft (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410135992.9A CN103883509A (en) | 2014-04-04 | 2014-04-04 | High-flow feed pump double-driving speed increasing type speed regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410135992.9A CN103883509A (en) | 2014-04-04 | 2014-04-04 | High-flow feed pump double-driving speed increasing type speed regulating system |
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| CN103883509A true CN103883509A (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410135992.9A Pending CN103883509A (en) | 2014-04-04 | 2014-04-04 | High-flow feed pump double-driving speed increasing type speed regulating system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443684A (en) * | 2015-12-22 | 2016-03-30 | 中国兵器工业集团第二○二研究所 | Planet gear transmission infinite acceleration mechanism |
| CN106813091A (en) * | 2017-03-15 | 2017-06-09 | 合肥海鲨智能科技有限责任公司 | A kind of planetary gear oil pump |
| CN106968933A (en) * | 2017-04-06 | 2017-07-21 | 湛剀节能科技股份有限公司 | The pump speed control method realized using the star-wheel variable speed energy saving system of closed-loop control water pump |
| CN107046357A (en) * | 2017-04-06 | 2017-08-15 | 湛剀节能科技股份有限公司 | Star-wheel variable speed energy saving system |
| CN108386238A (en) * | 2018-02-11 | 2018-08-10 | 大同煤矿集团有限责任公司 | A kind of motor-small turbine variable speed dual drive system |
| CN108386538A (en) * | 2018-03-25 | 2018-08-10 | 大连碧蓝节能环保科技有限公司 | Planetary gear stepless speed changing retarder |
| CN108443435A (en) * | 2018-04-02 | 2018-08-24 | 大连碧蓝节能环保科技有限公司 | Planetary gear stepless speed changing speed increaser |
| CN108488350A (en) * | 2018-04-02 | 2018-09-04 | 大连碧蓝节能环保科技有限公司 | Planetary gear differential speed changer |
| CN109450167A (en) * | 2019-01-14 | 2019-03-08 | 中国船舶重工集团公司第七0三研究所 | A kind of mechatronics integration speed-regulating system and its soft-start method |
| CN109707809A (en) * | 2017-10-26 | 2019-05-03 | 彼得·斯佩克 | Device and method for operating speed variable working equipment |
| CN110500142A (en) * | 2019-08-01 | 2019-11-26 | 大唐郓城发电有限公司 | A kind of ultra supercritical double reheat power generation sets water supply mercury vapour electricity hybrid drive and method |
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| GB411149A (en) * | 1932-11-04 | 1934-06-04 | G & J Weir Ltd | Improvements in reciprocating pumps |
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| CN203796538U (en) * | 2014-04-04 | 2014-08-27 | 中国重型机械研究院股份公司 | Double-drive acceleration type speed regulation device for large-flow water feed pump |
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2014
- 2014-04-04 CN CN201410135992.9A patent/CN103883509A/en active Pending
Patent Citations (5)
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| GB411149A (en) * | 1932-11-04 | 1934-06-04 | G & J Weir Ltd | Improvements in reciprocating pumps |
| JPH10339274A (en) * | 1997-06-05 | 1998-12-22 | Aqueous Res:Kk | Compressor drive device |
| CN2766071Y (en) * | 2004-11-16 | 2006-03-22 | 西安重型机械研究所 | Planet gear differential speed regulating apparatus |
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| 赵玉良等: "大功率风机及泵的节能调速装置", 《节能环保技术》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443684A (en) * | 2015-12-22 | 2016-03-30 | 中国兵器工业集团第二○二研究所 | Planet gear transmission infinite acceleration mechanism |
| CN106813091A (en) * | 2017-03-15 | 2017-06-09 | 合肥海鲨智能科技有限责任公司 | A kind of planetary gear oil pump |
| CN106968933A (en) * | 2017-04-06 | 2017-07-21 | 湛剀节能科技股份有限公司 | The pump speed control method realized using the star-wheel variable speed energy saving system of closed-loop control water pump |
| CN107046357A (en) * | 2017-04-06 | 2017-08-15 | 湛剀节能科技股份有限公司 | Star-wheel variable speed energy saving system |
| CN109707809A (en) * | 2017-10-26 | 2019-05-03 | 彼得·斯佩克 | Device and method for operating speed variable working equipment |
| CN108386238A (en) * | 2018-02-11 | 2018-08-10 | 大同煤矿集团有限责任公司 | A kind of motor-small turbine variable speed dual drive system |
| CN108386238B (en) * | 2018-02-11 | 2023-09-05 | 晋能控股煤业集团有限公司 | Motor-small steam turbine variable-rotation-speed double-driving system |
| CN108386538A (en) * | 2018-03-25 | 2018-08-10 | 大连碧蓝节能环保科技有限公司 | Planetary gear stepless speed changing retarder |
| CN108443435A (en) * | 2018-04-02 | 2018-08-24 | 大连碧蓝节能环保科技有限公司 | Planetary gear stepless speed changing speed increaser |
| CN108488350A (en) * | 2018-04-02 | 2018-09-04 | 大连碧蓝节能环保科技有限公司 | Planetary gear differential speed changer |
| CN109450167A (en) * | 2019-01-14 | 2019-03-08 | 中国船舶重工集团公司第七0三研究所 | A kind of mechatronics integration speed-regulating system and its soft-start method |
| CN110500142A (en) * | 2019-08-01 | 2019-11-26 | 大唐郓城发电有限公司 | A kind of ultra supercritical double reheat power generation sets water supply mercury vapour electricity hybrid drive and method |
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Application publication date: 20140625 |