CN207864558U - Speed-regulating actuator, feed pump and rotation machinery - Google Patents
Speed-regulating actuator, feed pump and rotation machinery Download PDFInfo
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- CN207864558U CN207864558U CN201820227026.3U CN201820227026U CN207864558U CN 207864558 U CN207864558 U CN 207864558U CN 201820227026 U CN201820227026 U CN 201820227026U CN 207864558 U CN207864558 U CN 207864558U
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Abstract
The utility model provides speed-regulating actuator, and the feed pump with the speed-regulating actuator and rotation machinery are related to heat power plant boiler water supply pump technical field.Wherein, speed-regulating actuator includes input shaft, fluid torque-converter, planetary gear train and output shaft, fluid torque-converter has pump impeller and turbine, planetary gear train includes planetary gear, sun gear, planet carrier and ring gear, there are three power transmission point --- the first, second, third power transmission points for planetary gear train tool, three power transmission points are respectively one of planet carrier, sun gear, ring gear, and input shaft is arranged in parallel with output shaft；Input shaft is connect with pump impeller, is also sequentially connected with the first power transmission point of planetary gear train on input shaft；Second power transmission point of turbine and planetary gear train is sequentially connected；The third power transmission point of output shaft and planetary gear train is sequentially connected.The utility model can solve the technical issues of feed pump high energy consumption existing in the prior art is not easy speed governing.
Description
Technical field
The utility model is related to the actuation techniques fields of heat power plant boiler feed pump, more particularly to can be applied to fire
Speed-regulating actuator, feed pump and the application of power station boiler feed pump have the rotation machinery of above-mentioned speed-regulating actuator.
Background technology
Boiler feed pump is one of capital equipment of Power Plant Thermal System, and effect is will to pass through the saturation of heating, deoxygenation
It is sent to boiler after water boosting.According to statistics, the power of feed pump consumption accounts for about 3~5% of host capacity or so, is in power plant auxiliary machine
The highest equipment of energy consumption, water supply pump assembly it is energy saving whether the index (coal consumption, station service power consumption rate etc.) of power plant is influenced it is very big.
" motor+gear forward type hydraulic coupler transmission device " mode is that power plant's water supply pump assembly is most normal before reducing energy consumption
Unit pattern, the application of this pattern unit for many years, technology maturation stablize, reliability is high, speed governing is convenient, and fluid-flywheel clutch
In the presence of making shaft system of unit have certain flexible characteristic, equipment can be protected to a certain extent, but due to fluid power idol
The slippage characteristic of clutch itself, in current hosts peak regulation, long-term continuous operation, and often in underload and variable load operation
It is less efficient when state, so, when power plant is in peaking operation, energy consumption is very big.
In order to solve the problems, such as that " motor+gear forward type hydraulic coupler transmission device " type feed pump units consumption is high,
Ripe reducing energy consumption scheme mainly has following two.
Scheme one：Using " motor+frequency conversion " mode, such unit pattern developed comparatively fast in recent years, and degree of recognition is higher, tool
The advantages that big, efficient for speed adjustable range.But in order to be transformed into the unit of " motor+frequency conversion " pattern, power plant needs to be equipped with multiple
Miscellaneous frequency conversion speed-adjusting system replaces gear-box, and the equipment such as independent mating air-conditioning, ventilation, occupied space is larger, and investment is high, and electricity
Sub- device components are more, system complex, and operational reliability is lower than stoste idol unit.
Scheme two：Fluid-flywheel clutch in electric drive system is replaced using speed governing planet device (foreign countries are known as Vorecon),
Vorecon is pure Hydro-mechanical equipment, not only has the advantages that fluid-flywheel clutch high reliability, and in the operation of low operating mode
When can keep efficient feature (efficiency that 80%~96% can be kept in the speed adjustable range of water supply pump assembly), still
Vorecon equipment is planetary structure pattern, and complicated, coaxially arranged, axial dimension is big, and stoste idol unit is parallel axes cloth
It sets, the basis of dynamic former water supply pump assembly is needed in transformation process, rearranges feed pump pipeline etc., quantities is larger.For
Many original equipment arrangements just be more compact for power plant, Vorecon schemes may all cannot achieve unit arrangement.
Utility model content
The purpose of this utility model is to provide speed-regulating actuators, to solve feed pump energy consumption existing in the prior art
Height is not easy the technical issues of speed governing.
Speed-regulating actuator, including input shaft, fluid torque-converter, planetary gear train and output shaft, fluid torque-converter have
Pump impeller and turbine, planetary gear train include planetary gear, sun gear, planet carrier and ring gear, and there are three power for planetary gear train tool
Transfer point --- the first power transmission point, the second power transmission point, third power transmission point, three power transmission points are respectively to go
One of carrier, sun gear, ring gear, planetary gear is rotatably arranged on planet carrier, and planetary gear is nibbled with ring gear and sun gear
It closes, input shaft is arranged in parallel with output shaft；
Input shaft is connect with pump impeller, is also sequentially connected with the first power transmission point of planetary gear train on input shaft；
Second power transmission point of turbine and planetary gear train is sequentially connected；
The third power transmission point of output shaft and planetary gear train is sequentially connected.
The utility model speed-regulating actuator has the beneficial effect that：
The speed-regulating actuator is transferred to whirlpool by a part for the power for inputting input shaft via fluid torque-converter
Wheel, and power is transferred to planetary gear train by turbine, it can be by adjusting fluid torque-converter guide vane opening step-less adjustment fluid power
The rotating speed of torque converter turbine, so change planetary gear train the second power transmission point rotating speed, to change in planetary gear train with
The rotating speed for exporting the third power transmission point of the transfer point of axis connection, to change the rotating speed of output shaft.Moreover, because input shaft
It is arranged in parallel with output shaft.Can fluid torque-converter be arranged in parallel with planetary gear train, take full advantage of transmission device and exist
Space on width, and the arrangement of input shaft and output shaft is enabled to be as closely as possible to original gear assembly
Arrangement is conducive to the influence for reducing the arrangement to workshop existing equipment.
Preferred technical solution, supplementary features are that the first power transmission point is ring gear, and the second power transmission point is
Planet carrier, third power transmission point are sun gear.
When input shaft and ring gear transmission are driven, and turbine is with planet carrier drive connection, the transmission of transmission chain can be reduced
The volume of component, is directly driven, and to reduce the weight of part, reduces the cost of transmission device.
Preferred technical solution, supplementary features are that the first power transmission point is planet carrier, and the second power transmission point is
Ring gear, third power transmission point are sun gear.
Further preferred technical solution, supplementary features are, turbine and the circumferentially fixed company of parallel stage first gear
It connects, planet carrier and the circumferentially fixed connection of parallel stage second gear, parallel stage first gear are engaged with parallel stage second gear.
By the way that parallel stage first gear and parallel stage second gear is arranged, centre-to-centre spacing appropriate can be not only maintained, with original
The centre-to-centre spacing of some transmission devices is consistent.But also rational reduction ratio can be provided, it ensure that transformer turbine
Output torque is amplified to the torque that can meet planet carrier needs.
Further preferred technical solution, supplementary features are, turbine and the circumferentially fixed company of parallel stage first gear
It connects, ring gear and the circumferentially fixed connection of parallel stage second gear, parallel stage first gear are engaged with parallel stage second gear.
Further preferred technical solution, supplementary features are that input shaft and parallel stage third gear are circumferentially fixed
Connection, ring gear and the circumferentially fixed connection of the 4th gear of parallel stage, parallel stage third gear are engaged with the 4th gear of parallel stage.
Further preferred technical solution, supplementary features are that input shaft and parallel stage third gear are circumferentially fixed
Connection, planet carrier and the circumferentially fixed connection of the 4th gear of parallel stage, parallel stage third gear are engaged with the 4th gear of parallel stage.
Another of the utility model is designed to provide a kind of feed pump, is provided with any of the above-described regulator drive dress
It sets.
The feed pump has all technique effects of above-mentioned speed-regulating actuator.
Preferred technical solution, supplementary features are that feed pump is heat power station boiler feed pump.
Another of the utility model is designed to provide a kind of rotation machinery, is provided with any of the above-described regulator drive dress
It sets.
The rotation machinery has all technique effects of above-mentioned speed-regulating actuator.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the speed-regulating actuator of the utility model embodiment one；
Fig. 2 is that the power transmission of the utility model embodiment one flows to schematic diagram；
Fig. 3 is the structural schematic diagram of the speed-regulating actuator of the utility model embodiment two；
Fig. 4 is that the power transmission of the utility model embodiment two flows to schematic diagram；
The meaning that reference numeral used in each embodiment indicates is as follows：
1- input shafts；2- parallel stage third gears；3- fluid torque-converters；4- parallel stage first gears；5- parallel stages second
Gear；6- sun gears；7- planetary gears；8- ring gears；9- planet carriers；The 4th gear of 10- parallel stages；11- turbines；12- pump impellers；
13- guide vanes；14- output shafts.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
Embodiment one
As Figure 1-Figure 2, speed-regulating actuator, including input shaft 1, fluid torque-converter 3, planetary gear train and output shaft
14, fluid torque-converter 3 has pump impeller 12 and turbine 11, and planetary gear train includes planetary gear 7, sun gear 6, planet carrier 9 and internal tooth
Circle 8, there are three power transmission points for planetary gear train tool --- and the first power transmission point, the second power transmission point, third power pass
Defeated, three power transmission points are respectively one of planet carrier 9, sun gear 6, ring gear 8, and planetary gear 7 is rotatably arranged on row
In carrier 9, planetary gear 7 is engaged with ring gear 8 and sun gear 6, and input shaft 1 is arranged in parallel with output shaft 14；
Input shaft 1 is connect with pump impeller 12, is also sequentially connected with the first power transmission point of planetary gear train on input shaft 1；
Turbine 11 and the second power transmission point of planetary gear train are sequentially connected；
Output shaft 14 and the third power transmission point of planetary gear train are sequentially connected.
The utility model speed-regulating actuator has the beneficial effect that：
The speed-regulating actuator is transferred to whirlpool by a part for the power for inputting input shaft 1 via fluid torque-converter 3
Wheel 11, and power is transferred to 7 system of planetary gear by turbine 11, it can be stepless by adjusting fluid torque-converter 3 guide vane, 13 apertures
The rotating speed of 3 turbine 11 of fluid torque-converter is adjusted, and then changes the rotating speed of the second power transmission point of 7 system of planetary gear, to change
The rotating speed of the third power transmission point for the transfer point being connect with output shaft 14 in 7 system of planetary gear, to change turning for output shaft 14
Speed.Moreover, because input shaft 1 and output shaft 14 are arranged in parallel.It can make fluid torque-converter 3 is parallel with planetary gear train to set
It sets, takes full advantage of the space of transmission device on the width, and enable to the arrangement of input shaft 1 and output shaft 14 as far as possible
Close to the arrangement of original gear assembly, be conducive to the influence for reducing the arrangement to workshop existing equipment.
Particularly, the first power transmission point is ring gear 8, and the second power transmission point is planet carrier 9, third power transmission
Point is sun gear 6.
When input shaft 1 and the transmission of ring gear 8 are driven, and turbine 11 is with the drive connection of planet carrier 9, transmission chain can be reduced
The volume of transmission parts, is directly driven, and to reduce the weight of part, reduces the cost of transmission device.
Further particularly, turbine 11 and the circumferentially fixed connection of parallel stage first gear 4, planet carrier 9 and parallel stage
The circumferentially fixed connection of second gear 5, parallel stage first gear 4 are engaged with parallel stage second gear 5.Specifically, turbine 11 can
With coaxial with parallel stage first gear 4 and be fixedly connected, planet carrier 9 can be coaxial with parallel stage second gear 5 and be fixedly connected,
The centre-to-centre spacing of parallel stage first gear 4 and parallel stage second gear 5 is the distance between axles of input shaft 1 and output shaft 14.Parallel stage
One gear 4 and parallel stage second gear 5 may be located on the left side of planetary gear train shown in FIG. 1.Parallel stage first gear 4
The number of teeth be less than parallel stage second gear 5 the number of teeth.
By setting parallel stage first gear 4 and parallel stage second gear 5, centre-to-centre spacing appropriate can be not only maintained, with
The centre-to-centre spacing of original transmission device is consistent.But also rational reduction ratio can be provided, it ensure that 3 whirlpool of fluid torque-converter
It takes turns 11 output torques and is amplified to the torque that can meet the needs of planet carrier 9.
Further particularly, input shaft 1 and the circumferentially fixed connection of parallel stage third gear 2, ring gear 8 and parallel stage
The circumferentially fixed connection of 4th gear 10, parallel stage third gear 2 are engaged with the 4th gear 10 of parallel stage.Particularly, it inputs
Axis 1 can be keyed with parallel stage third gear 2, and ring gear 8 can be coaxial with the 4th gear 10 of parallel stage and be fixedly connected, and puts down
The centre-to-centre spacing of row grade third gear 2 and the 4th gear 10 of parallel stage is the distance between axles of input shaft 1 and output shaft 14.Parallel stage third
Gear 2 and the 4th gear 10 of parallel stage may be located on the right side of planetary gear train shown in FIG. 1.
The operating principle of the present embodiment is：
Input shaft 1 is driven by constant speed motor, and parallel stage third gear 2 engages with the 4th gear 10 of parallel stage and ensure that internal tooth
The constant of 8 rotating speeds is enclosed, 12 invariablenes turning speed of pump impeller of fluid torque-converter 3 can be stepless by adjusting fluid torque-converter 3 guide vane, 13 apertures
The rotating speed for adjusting 3 turbine 11 of fluid torque-converter, can shunt the power of input shaft 1 at fluid torque-converter 3.Shunting
A part of power passes through the engaging of parallel stage first gear 4 and parallel stage second gear 5, parallel stage second gear 5 and planet carrier 9
Connection, 3 turbine of fluid torque-converter, 11 rotating speed is transferred to planet carrier 9, i.e., planet carrier 9, which can pass through, adjusts 3 guide vane of fluid torque-converter
13 apertures carry out stepless speed regulation.And another part power can then pass through parallel stage third gear 2 and the 4th gear 10 of parallel stage
Power, is transferred to the ring gear 8 of planetary gear train by engagement.According to planetary differential principle, the ring gear 8 of constant rotational speed with can nothing
The planet carrier 9 of grade speed governing drives sun gear 6 jointly, to realize the stepless speed regulation output of sun gear 6.
The advantages of this programme, is：Parallel stage transmission both can guarantee centre-to-centre spacing (consistent with stoste idol centre-to-centre spacing) appropriate,
Providing rational reduction ratio again, (ensure that 3 turbine of fluid torque-converter, 11 output torque is amplified to can meet the needs of planet carrier 9
Torque), in practical liquid idol type feed pump Transformation of Unit engineering, the interface of novel variable speed energy saving equipment is can guarantee using this scheme
It is completely the same with stoste idol equipment, it can directly replace without adjusting the parts such as unit ground, pipeline, the construction period is short, replaces
Energy-saving effect is notable afterwards, and by taking 2 × 350MW supercritical units as an example, annual utilization hours 3500 hours, unit is in halfload throughout the year
State, through measuring and calculating, can economize on electricity 12,000,000 degree of electricity every year after replacement, and feed pump power consumption declines 0.7%~1.5%.
By taking the overcritical water supply pump assembly reducing energy consumptions of 350MW as an example, former water supply pump assembly is arranged as " constant speed motor -- gear
Forward type hydraulic coupler transmission device -- feed pump ".If carrying out Frequency Conversion Modification, it is necessary first to using step-up gear to stoste
Power coupler transmission device is replaced or is transformed, and separately also needs mating frequency converter, transformer, air-conditioning, ventilating system, harmonic filtration
The equipment such as device, and need to need to carry out civil construction in the independent air-conditioned room of outdoor construction.In addition, also needing outdoor frequency converter and electricity
Motivation plans connecting cable circuit, is also required to change to original motor cable connection.Comprehensive analysis, construction content is more, transformation pair
The original layout of power plant changes larger, long construction period.
If carrying out Vorecon transformations, since Vorecon equipment is longer than gear type fluid-flywheel clutch on axial length,
And Vorecon equipment is coaxially arranged, is different from the parallel shaft arrangement of original gear type fluid-flywheel clutch, needs to former feed pump
Crew base is transformed, and all devices (including feed pump pipeline) need to rearrange in unit, and quantities is big, and the period is transformed
Long, if former water supply pump assembly arrangement is natively compact, such modification scheme possibly even cannot achieve.Using this
The new structure pattern that utility model (utility model) is related to can accomplish：Total interface (including axial distance) and original gear are preposition
Formula hydraulic coupler transmission device is completely the same, can accomplish " to remove original gear forward type hydraulic coupler transmission device → installation
The flow of new and effective speed regulation device ", and without other quantities, and possess with frequency conversion and the comparable operational efficiency of Vorecon, can
The advantages that suitable with original gear type fluid-flywheel clutch by property.
Embodiment two
As shown in Figure 3-4, it is in place of the present embodiment and the difference of embodiment 1, the first power transmission point is planet carrier 9,
Second power transmission point is ring gear 8, and third power transmission point is sun gear 6.
Particularly, ring gear 8 and the circumferentially fixed connection of parallel stage second gear 5.
Particularly, planet carrier 9 and the circumferentially fixed connection of the 4th gear 10 of parallel stage.
Embodiment three
The present embodiment provides a kind of feed pumps, are provided with any of the above-described speed-regulating actuator.
The feed pump has all technique effects of above-mentioned speed-regulating actuator.
Particularly, feed pump is heat power station boiler feed pump.
Embodiment three
The present embodiment provides a kind of rotation machineries, are provided with any of the above-described speed-regulating actuator.
The rotation machinery has all technique effects of above-mentioned speed-regulating actuator.
It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement, such as：
(1) in embodiment 1 and embodiment 2, it is that engaging for parallel stage first gear and parallel stage second gear is utilized, puts down
Row grade third gear is engaged with the 4th gear of parallel stage, realize by power by turbine be transferred to planetary gear train and by power by
Input shaft is transferred to planetary gear train, actually can also select skin according to factors such as power, cost, space, use habits
The others driving form such as V belt translation or chain drive, can also complete the effect of power transmits.
(2) in embodiment 1, parallel stage first gear and parallel stage second gear are all disposed within planetary gear train shown in FIG. 1
Left side.Parallel stage third gear and the 4th gear of parallel stage are all disposed within the right side of planetary gear train shown in FIG. 1.It is practical
On, can parallel stage third gear and the 4th gear of parallel stage be also all disposed within planetary gear train shown in FIG. 1 as needed
Left side.
And these modifications or replacements, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. speed-regulating actuator, which is characterized in that including input shaft, fluid torque-converter, planetary gear train and output shaft, the liquid
Power torque-converters has pump impeller and turbine, and the planetary gear train includes planetary gear, sun gear, planet carrier and ring gear, the row
Star gear train tool is there are three power transmission point --- the first power transmission point, the second power transmission point, third power transmission point, and three
A power transmission point is respectively one of the planet carrier, the sun gear, the ring gear, the planetary gear rotation setting
On the planet carrier, the planetary gear is engaged with ring gear and sun gear, and the input shaft is arranged in parallel with the output shaft；
The input shaft is connect with pump impeller, is also driven and is connected with the first power transmission point of the planetary gear train on the input shaft
It connects；
Second power transmission point of the turbine and the planetary gear train is sequentially connected；
The third power transmission point of the output shaft and the planetary gear train is sequentially connected.
2. speed-regulating actuator according to claim 1, which is characterized in that the first power transmission point is the internal tooth
Circle, the second power transmission point are the planet carrier, and the third power transmission point is the sun gear.
3. speed-regulating actuator according to claim 1, which is characterized in that the first power transmission point is the planet
Frame, the second power transmission point are the ring gear, and the third power transmission point is the sun gear.
4. speed-regulating actuator according to claim 2, which is characterized in that the turbine is circumferential with parallel stage first gear
Fixed connection, the planet carrier and the circumferentially fixed connection of parallel stage second gear, the parallel stage first gear with it is described
Parallel stage second gear engages.
5. speed-regulating actuator according to claim 3, which is characterized in that the turbine is circumferential with parallel stage first gear
Fixed connection, the ring gear and the circumferentially fixed connection of parallel stage second gear, the parallel stage first gear with it is described
Parallel stage second gear engages.
6. speed-regulating actuator according to claim 2, which is characterized in that the input shaft and parallel stage third gear week
To fixed connection, the ring gear and the circumferentially fixed connection of the 4th gear of parallel stage, the parallel stage third gear and institute
State the engagement of the 4th gear of parallel stage.
7. speed-regulating actuator according to claim 3, which is characterized in that the input shaft and parallel stage third gear week
To fixed connection, the planet carrier and the circumferentially fixed connection of the 4th gear of parallel stage, the parallel stage third gear and institute
State the engagement of the 4th gear of parallel stage.
8. feed pump, which is characterized in that be provided with the speed-regulating actuator described in any one of claim 1-7.
9. feed pump according to claim 8, which is characterized in that the feed pump is heat power station boiler feed pump.
10. rotation machinery, which is characterized in that be provided with the speed-regulating actuator described in any one of claim 1-8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820227026.3U CN207864558U (en) | 2018-02-08 | 2018-02-08 | Speed-regulating actuator, feed pump and rotation machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820227026.3U CN207864558U (en) | 2018-02-08 | 2018-02-08 | Speed-regulating actuator, feed pump and rotation machinery |
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| CN207864558U true CN207864558U (en) | 2018-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119631A (en) * | 2018-02-08 | 2018-06-05 | 沈阳三科嘉诚流体传动有限公司 | Speed-regulating actuator, feed pump and rotation machinery |
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2018
- 2018-02-08 CN CN201820227026.3U patent/CN207864558U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119631A (en) * | 2018-02-08 | 2018-06-05 | 沈阳三科嘉诚流体传动有限公司 | Speed-regulating actuator, feed pump and rotation machinery |
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