CN208546283U - A kind of feed-water pump of the non-coaxial driving fore pump of displaced type - Google Patents
A kind of feed-water pump of the non-coaxial driving fore pump of displaced type Download PDFInfo
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- CN208546283U CN208546283U CN201820836528.6U CN201820836528U CN208546283U CN 208546283 U CN208546283 U CN 208546283U CN 201820836528 U CN201820836528 U CN 201820836528U CN 208546283 U CN208546283 U CN 208546283U
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Abstract
The utility model discloses a kind of feed-water pumps of the non-coaxial driving fore pump of displaced type, including frequency converter, water supply pump motor and step-up gear, wherein, the frequency converter is connect with the water supply pump motor, for controlling the output revolving speed of the water supply pump motor；The water supply pump motor is connect with the step-up gear, for the power of the water supply pump motor to be passed to the step-up gear；The step-up gear includes the intracorporal power input shaft of case described in cabinet and partial insertion and power output shaft.A kind of feed-water pump of the non-coaxial driving fore pump of displaced type provided by the utility model has the advantages that energy conservation and environmental protection, maintenance cost are low, energy utilization rate is high, enterprise's production cost is low etc., has relatively broad application prospect.
Description
Technical field
The utility model relates to drive apparatus energy saving and speed increasing fields, more particularly, to a kind of energy saving feed-water pump.
Background technique
Fig. 1 shows the operation principle schematic diagram using fluid coupling driving electrically driven feed pump system, arrow table in figure
Show water (flow) direction.
The electrically driven feed pump system of existing thermal power plant, as shown in Figure 1, electrically driven feed pump is driven using fluid coupling, by
Fore pump 11, water supply pump motor 12, fluid coupling 13 and 14 4 part of feed pump composition.Its working principle is that: feed pump
12 Driven by Coaxial fore pump 11 of motor and fluid coupling 13；Fore pump 11 will add under the driving of water supply pump motor 12
Water after pressure is continuously sent by pipeline 112 to the entrance 141 of feed pump 14 by the outlet 111 of fore pump 11；Fluid power coupling
The power of water supply pump motor 12 is passed to feed pump 14 by clutch 13, and driving feed pump 14 works；After feed pump 14 will pressurize
Water, then through outlet 142 send out.When the confluent of needs is reduced, feed pump 14 can be reduced by fluid coupling 13
Revolving speed is realized.And the continuous operation under rated speed, the revolving speed of fore pump 11 are also electric with feed pump always for water supply pump motor 12
As motivation 12, the continuous operation under rated speed, can satisfy 14 entrance of feed pump, 141 hydraulic pressure and flow so for a long time, from
And ensures feed pump 14 and cavitation does not occur.
According to statistics, the power consumption of electrically driven feed pump system accounts for nearly the 30% of power plant electricity consumption in thermal power plant, electronic
Machine 12 is during feed pump 14 energizes, and electric energy is first converted into kinetic energy and is input in fluid coupling 13, then by fluid power coupling
Kinetic energy is input in feed pump 14 by clutch 13.And kinetic energy is lost very big in the transmittance process of fluid coupling 13.This is
Since fluid coupling 13 is a kind of nonrigid coupling device using liquid as working media, as shown in Figure 1, its mechanical transfer unit
One to be made of the pump impeller 131 and turbine 132 of the same radius closed working chamber that liquid circulation can be made to flow.Fluid coupling
13 working principle is that pump impeller 131 is mounted on the coupling input axis 133 of fluid coupling 13, and turbine 132 is mounted on fluid power coupling
Liquid on the coupling output shaft 134 of clutch 13, when water supply pump motor 12 drives coupling input axis 131 to rotate, in working chamber
Body is thrown away by centrifugal pump impeller, this high-speed liquid impulse turbine 132, and turbine 132 is pushed to rotate, finally by coupling output shaft
134 impart power to feed pump 14.Simultaneously because fluid coupling 13 itself has scoop tube 135, pass through opening to scoop tube 135
Change of the degree between 0%~100% can be achieved that the output revolving speed of fluid coupling is controlled and adjusted.Fluid power coupling simultaneously
Intermeshing driving gear 136 and speed increasing gear 137 are also had in clutch 13, play the role of increasing output revolving speed, therefore
Often it is used on the electrically driven feed pump of thermal power plant.But during the transferring kinetic energy of fluid coupling 13, since liquid is
Flexible media, the case where easily causing skidding generation, thus prevent pump impeller 131 from kinetic energy to be transferred to turbine 132 completely, therefore fluid power
The operating power consumption of coupler 13 is larger, and the production cost of enterprise is higher.Separately for mounted fluid coupling, due to its equipment
Position has been determined, and front and back connection is complex, causes the higher cost removed, thus is badly in need of that a kind of simple mode is taken to come to electricity
Dynamic feed-water pump is transformed.
Utility model content
To solve the above-mentioned problems, the utility model replaces fluid coupling using step-up gear, and frequency converter is controlled
Preposition pump work is operated alone in the revolving speed of water supply pump motor processed, preposition pump motor, design it is a kind of low energy consumption, transformation it is convenient into
And energy conservation and environmental protection, the non-coaxial feed-water pump for driving fore pump of displaced type for reducing enterprise's production cost.
The utility model provides the following technical solutions:
One aspect according to the present utility model provides a kind of feed-water pump of non-coaxial driving fore pump of displaced type,
Including frequency converter, water supply pump motor and step-up gear, wherein the frequency converter is connect with the water supply pump motor, is used
In the output revolving speed for controlling the water supply pump motor；The water supply pump motor is connect with the step-up gear, and being used for will
The power of the water supply pump motor passes to the step-up gear；The step-up gear includes cabinet and partial insertion
The intracorporal power input shaft of the case and power output shaft.
An embodiment according to the present utility model, the water supply pump motor includes motor output shaft, the electricity
The output end of motivation output shaft is connect with the input terminal of the power input shaft by first shaft coupling, is used for the feed pump
The power of motor passes to the step-up gear.
An embodiment according to the present utility model, the step-up gear further include being present in the intracorporal sliding tooth of case
Wheel and speed increasing gear, the driving gear are mounted on the output end of the power input shaft, and the speed increasing gear is mounted on institute
It states on the input terminal of power output shaft, the driving gear is meshed with the speed increasing gear.
An embodiment according to the present utility model, further includes feed pump, the feed pump and the step-up gear
Connection, for transferring out the water after pressurization under the driving of the step-up gear.
An embodiment according to the present utility model, the feed pump include water supply pump input shaft, and the feed pump is defeated
Enter axis to connect with the output end of the power output shaft by second shaft coupling.
An embodiment according to the present utility model, further includes fore pump and preposition pump motor, wherein described preposition
The outlet of pump is connect by pipeline with the entrance of the feed pump, and the water for that will pass through the fore pump pressurization is supplied by pipeline
To the feed pump；The preposition pump motor is connect with the fore pump, for driving the preposition pump work.
Compared with the existing technology, the feed-water pump of the non-coaxial driving fore pump of a kind of displaced type provided by the utility model
It has the advantage that and is controlled and adjusted come the output revolving speed to water supply pump motor using frequency converter, meeting operating condition need
Under the premise of asking, frequency converter is provided simultaneously with effect of energy conservation, and to motor have soft start function and to protection gear etc. it is mechanical
Abrasion has remarkable result, to reduce the maintenance cost of equipment；By the power input shaft and power output shaft in step-up gear
It is rigidly connected using driving gear and speed increasing gear, kinetic energy is made, without slip loss, to guarantee to increase in the transmitting of power output shaft
Transmission efficiency in fast gear-box reaches highest, to improve the utilization rate of the energy, reduces enterprise's production cost；Using fore pump
Preposition pump work is operated alone in motor, makes fore pump according to the rated speed continuous operation before transformation, to ensure that water supply is pumped into
The hydraulic pressure and flow of mouth guarantee that cavitation does not occur for feed pump；In addition, original electrically driven feed pump system is being transformed in the utility model
When, it is not necessarily to overall pulling down, only need to replace stoste mechanical couple with step-up gear, and add frequency converter and preposition pump motor,
Transformation difficulty is small, at low cost, therefore a kind of feed-water pump of the non-coaxial driving fore pump of displaced type provided by the utility model
Have the advantages that energy conservation and environmental protection, maintenance cost are low, energy utilization rate is high, enterprise's production cost is low etc., there is relatively broad application
Prospect.
Detailed description of the invention
Fig. 1 is the operation principle schematic diagram that electrically driven feed pump system is driven using fluid coupling.
Fig. 2 is that a kind of feed-water pump working principle of the non-coaxial driving fore pump of displaced type provided by the utility model is shown
It is intended to.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, reference label refers to that this is practical new
Component, technology in type, so as to the advantages of the utility model and feature is realized under appropriate circumstances can be easier to be understood.Under
The description in face is the materialization to the utility model claims, and relevant to claim other is not clearly stated
Specific implementation also belongs to the scope of the claims.
Fig. 2 shows a kind of feed pump systems of the non-coaxial driving fore pump of displaced type according to the utility model one aspect
It unites operation principle schematic diagram, arrow indicates water (flow) direction in figure.
As shown in Fig. 2, a kind of feed-water pump of the non-coaxial driving fore pump of displaced type provided by the utility model, including
Frequency converter 21, water supply pump motor 22 and step-up gear 23, wherein the frequency converter 21 connects with the water supply pump motor 22
It connects, for controlling the output revolving speed of the water supply pump motor 22；The water supply pump motor 22 and the step-up gear 23
Connection, for the power of the water supply pump motor 22 to be passed to the step-up gear 23；The step-up gear 23 wraps
Include the intracorporal power input shaft 231 of case described in cabinet and partial insertion and power output shaft 232.
A kind of feed-water pump of the non-coaxial driving fore pump of displaced type provided by the utility model, using frequency converter 21 come
The voltage and frequency being input in water supply pump motor 22 are adjusted, changes power supply and is input to electric energy in water supply pump motor 22
Size, and then control water supply pump motor 22 output revolving speed.Water supply pump motor 22 is input to since frequency conversion 21 is adjustable
In voltage and frequency, therefore in the present embodiment the installation of frequency converter 21 further reached energy conservation effect.In addition, according to change
The characteristic of frequency device 21 itself, frequency converter 21 can also play a protective role to overcurrent, over-voltage or overload etc., and to protection gear etc.
Mechanical wear has remarkable result, so as to reduce the maintenance cost of feed-water pump.
A kind of feed-water pump of the non-coaxial driving fore pump of displaced type provided by the utility model, the feed pump are electronic
Machine 22 includes motor output shaft 221, the input of the output end of the motor output shaft 221 and the power input shaft 231
End is connected by first shaft coupling 222, for the power of the water supply pump motor 22 to be passed to the step-up gear 23.
The motor output shaft 221, which is realized with the power input shaft 231 by first shaft coupling 222, to be rigidly connected, and makes feed pump
The dynamic high efficiency of water supply pump motor 22 is passed to step-up gear 23 by motor output shaft 221 by motor 22.
A kind of feed-water pump of the non-coaxial driving fore pump of displaced type provided by the utility model, the step-up gear
23 further include being present in the intracorporal driving gear 233 of case and speed increasing gear 234, and the driving gear 233 is mounted on the power
On the output end of input shaft 231, the speed increasing gear 234 is mounted on the input terminal of the power output shaft 232, the driving
Gear 233 is meshed with the speed increasing gear 234.By the power input shaft 231 and power output shaft 232 in step-up gear 23
It is rigidly connected using driving gear and speed increasing gear, guarantees that kinetic energy without slip loss, in the transmitting of power output shaft 232
Transmission efficiency in step-up gear 23 reaches highest, to improve the utilization rate of the energy, reduces enterprise's production cost.Meanwhile
In order to realize that speedup effect, the present embodiment design are fixedly installed with the sliding tooth of major diameter in the output end of power input shaft 231
Wheel 233 is fixedly installed with the speed increasing gear 234 of minor diameter in the input terminal of power output shaft 232, drives gear 233 in power
It is operated under the driving of input shaft 231, the speed increasing gear 234 of engagement is driven also to be operated, since the diameter of driving gear 233 is big
In the diameter of speed increasing gear 234, therefore in the case where driving the rotation of gear 233 to turn around, the circle number that speed increasing gear 234 rotates is big
In a circle, and since speed increasing gear 234 is mounted on power output shaft 232, the rotation of power output shaft 232 is also greater than one
Circle, it is achieved that step-up gear 23 exports the effect that revolving speed increases.
A kind of feed-water pump of the non-coaxial driving fore pump of displaced type provided by the utility model, further includes feed pump
24, the feed pump 24 is connect with the step-up gear 23, for it will pressurize under the driving of the step-up gear 23 after
Water transfer out.
A kind of feed-water pump of the non-coaxial driving fore pump of displaced type provided by the utility model, the feed pump 24 wrap
Water supply pump input shaft 241 is included, the water supply pump input shaft 241 and the output end of the power output shaft 232 pass through the second shaft coupling
Device 242 connects.The water supply pump input shaft 241, which is realized with the power output shaft 232 by shaft coupling, to be rigidly connected, and makes described
The dynamic high efficiency of step-up gear 23 is passed to feed pump 24 by the power output shaft 232 by step-up gear 23.
A kind of feed-water pump of the non-coaxial driving fore pump of displaced type provided by the utility model, further includes fore pump 25
With preposition pump motor 26, wherein the outlet 251 of the fore pump 25 passes through the entrance 243 of pipeline 252 and the feed pump 24
Connection supplies the feed pump 24 by pipeline 252 for will pass through the water that the fore pump 25 pressurizes；The fore pump is electronic
Machine 26 is connect with the fore pump 25, for driving the fore pump 25 to work.In the present embodiment, if not using fore pump electric
Motivation 26, but in the way of 22 Driven by Coaxial fore pump 25 of water supply pump motor, then frequency converter 21 controls feed pump electricity
After motivation 22 adjusts the speed, it can be needed and the moment adjusting output revolving speed of water supply pump motor 22 according to operating condition；When the confluent of needs subtracts
When few, water supply pump motor 22 is adjusted to low speed operation, and 25 revolving speed of fore pump of Driven by Coaxial also can be with water supply pump motor 22
Revolving speed reduces simultaneously；The revolving speed of fore pump 25 reduces, and will affect 251 hydraulic pressure of outlet and flow of fore pump 25, gives to reduce
243 hydraulic pressure of entrance and flow of water pump 24 increase the risk of 24 cavitation of feed pump.Therefore, a reality provided by the utility model
The mode of applying be fore pump 25 and water supply pump motor 22 are separated, then to fore pump 25 increase a revolving speed meet the requirements it is preposition
Pump motor 26 is operated alone fore pump 25 by preposition pump motor 26 and works, makes fore pump 25 by the rated speed before transformation
Continuous operation, to ensure 251 hydraulic pressure of outlet and flow of fore pump 25, to guarantee 243 hydraulic pressure of entrance and stream of feed pump 24
Amount avoids feed pump 24 that cavitation occurs.
Compared with the existing technology, the feed-water pump of the non-coaxial driving fore pump of a kind of displaced type provided by the utility model
It has the advantage that and is controlled and adjusted come the output revolving speed to water supply pump motor 22 using frequency converter 21, meeting work
Under the premise of condition demand, frequency converter 21 be provided simultaneously with energy conservation effect, and to motor 22 have soft start function and to protection tooth
The mechanical wears such as wheel have remarkable result, to reduce the maintenance cost of equipment；By the power input shaft 231 in step-up gear 23
It is rigidly connected with power output shaft 232 using driving gear 233 and speed increasing gear 234, makes kinetic energy in power output shaft 232
Transmitting without slip loss, guarantee that the transmission efficiency in step-up gear 23 reaches highest, to improve the utilization rate of the energy, subtract
Few enterprise's production cost；Using preposition pump motor 26 be operated alone fore pump 25 work, make fore pump 25 according to transformation before
Rated speed continuous operation guarantees that cavitation does not occur for feed pump 24 to ensure the hydraulic pressure and flow of 24 entrance 243 of feed pump；This
Outside, the utility model is not necessarily to overall pulling down, only need to replace original with step-up gear 23 when original electrically driven feed pump system is transformed
Fluid coupling, and frequency converter 21 and preposition pump motor 26 are added, transformation difficulty is small, at low cost, therefore the utility model mentions
A kind of feed-water pump of the non-coaxial driving fore pump of the displaced type supplied has that energy conservation and environmental protection, maintenance cost be low, energy utilization rate
The high, advantages such as enterprise's production cost is low, have relatively broad application prospect.
The utility model is limited it should be noted that above-described embodiment illustrates rather than the utility model
System, and those skilled in the art can be designed alternative embodiment without departing from the scope of the appended claims.?
In claim, any reference symbol between parentheses should not be configured to limitations on claims.
Claims (6)
1. a kind of feed-water pump of the non-coaxial driving fore pump of displaced type, which is characterized in that including frequency converter (21), feed pump
Motor (22) and step-up gear (23), wherein
The frequency converter (21) connect with the water supply pump motor (22), for controlling the defeated of the water supply pump motor (22)
Revolving speed out；
The water supply pump motor (22) connect with the step-up gear (23), is used for the water supply pump motor (22)
Power passes to the step-up gear (23)；
The step-up gear (23) includes that the intracorporal power input shaft of case described in cabinet and partial insertion (231) and power are defeated
Shaft (232).
2. the feed-water pump of the non-coaxial driving fore pump of displaced type according to claim 1, which is characterized in that described to give
Pump motor (22) includes motor output shaft (221), and the output end and the power of the motor output shaft (221) are defeated
The input terminal for entering axis (231) is connected by first shaft coupling (222), for transmitting the power of the water supply pump motor (22)
Give the step-up gear (23).
3. the feed-water pump of the non-coaxial driving fore pump of displaced type according to claim 1, which is characterized in that the increasing
Fast gear-box (23) further includes being present in the intracorporal driving gear (233) of case and speed increasing gear (234), the driving gear
(233) it is mounted on the output end of the power input shaft (231), the speed increasing gear (234) is mounted on the power output
On the input terminal of axis (232), the driving gear (233) is meshed with the speed increasing gear (234).
4. the feed-water pump of the non-coaxial driving fore pump of displaced type according to claim 1, which is characterized in that further include
Feed pump (24), the feed pump (24) connect with the step-up gear (23), in the step-up gear (23)
The water after pressurization is transferred out under driving.
5. the feed-water pump of the non-coaxial driving fore pump of displaced type according to claim 4, which is characterized in that described to give
Water pump (24) includes water supply pump input shaft (241), and the water supply pump input shaft (241) is defeated with the power output shaft (232)
Outlet is connected by second shaft coupling (242).
6. the feed-water pump of the non-coaxial driving fore pump of displaced type according to claim 1, which is characterized in that further include
Fore pump (25) and preposition pump motor (26), wherein
The outlet (251) of the fore pump (25) is connect by pipeline (252) with the entrance (243) of the feed pump (24), is used
The feed pump (24) is supplied by pipeline (252) in the water that will pass through the fore pump (25) pressurization；
The preposition pump motor (26) connect with the fore pump (25), for driving the fore pump (25) to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820836528.6U CN208546283U (en) | 2018-05-31 | 2018-05-31 | A kind of feed-water pump of the non-coaxial driving fore pump of displaced type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820836528.6U CN208546283U (en) | 2018-05-31 | 2018-05-31 | A kind of feed-water pump of the non-coaxial driving fore pump of displaced type |
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| Publication Number | Publication Date |
|---|---|
| CN208546283U true CN208546283U (en) | 2019-02-26 |
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ID=65420674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820836528.6U Active CN208546283U (en) | 2018-05-31 | 2018-05-31 | A kind of feed-water pump of the non-coaxial driving fore pump of displaced type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208546283U (en) |
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2018
- 2018-05-31 CN CN201820836528.6U patent/CN208546283U/en active Active
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