CN203335769U - Improved frequency control type hydraulic coupler electrically driven feed pump - Google Patents
Improved frequency control type hydraulic coupler electrically driven feed pump Download PDFInfo
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- CN203335769U CN203335769U CN2013203425485U CN201320342548U CN203335769U CN 203335769 U CN203335769 U CN 203335769U CN 2013203425485 U CN2013203425485 U CN 2013203425485U CN 201320342548 U CN201320342548 U CN 201320342548U CN 203335769 U CN203335769 U CN 203335769U
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- Prior art keywords
- hydraulic coupler
- hydraulic couplers
- electrically driven
- feed pump
- output shaft
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Abstract
The utility model discloses an improved frequency control type hydraulic coupler electrically driven feed pump. The improved frequency control type hydraulic coupler electrically driven feed pump comprises a power circuit breaker, a motor, a hydraulic coupler and a feed pump, wherein a frequency converter is installed between the power circuit breaker and the motor, the hydraulic coupler comprises an input shaft, an output shaft, a driving gear and a driven gear, the driving gear and the driven gear are meshed with each other, a transmission shaft of the motor is connected with the input shaft of the hydraulic coupler, and the input shaft of the hydraulic coupler is fixedly connected with the driving gear of the hydraulic coupler. The improved frequency control type hydraulic coupler electrically driven feed pump is characterized in that the hydraulic coupler further comprises a cog-wheel coupling, a transmission shaft of the driven gear is connected with the output shaft of the hydraulic coupler through the cog-wheel coupling, and the feed pump is driven by the output shaft of the hydraulic coupler. According to the improved frequency control type hydraulic coupler electrically driven feed pump, the speed regulating method achieved with the hydraulic coupler is changed to the frequency control method, so that unit consumption of the feed pump is reduced; meanwhile, due to the fact that a pump impeller, a turbine and a working oil system are removed and a working oil cooler is eliminated, energy transmission loss of the hydraulic coupler is eliminated, and original manufacturing accuracy of the hydraulic coupler is guaranteed.
Description
Technical field
The utility model relates to a kind of feed water pump, and especially a kind of frequency-conversion speed-regulation type improves the hydraulic couplers electrically driven feedpump, belongs to the water work technical field.
Background technique
Heat power plant boiler electrically driven feedpump application hydraulic couplers is regulated speed of feedwater control feedwater flow and is widely used in China, feed water pump obtains power and the adjusting rotary speed of motor by hydraulic couplers, the working oil of hydraulic couplers is the medium of motor to the feed water pump transmitted power, the hydraulic couplers speed governing is slippage clutch mode, although hydraulic couplers has advantages of stepless speed regulation, the working oil of transmitting torque produces heat loss because of friction, and transmission efficiency and rotating speed are output into direct ratio.With the direct speed governing of motor frequency change, compare, the average power consumption of hydraulic couplers speed governing will exceed 25% left and right.So, for the consideration of energy-conservation aspect, the electrically driven feedpump of domestic application hydraulic couplers speed governing changes by frequency converter timing and has become the energy-conservation important means of heat power plant boiler feed water pump from now on.Hydraulic couplers in existing technology, mainly be comprised of two-part, and the one, the overdrive gear group, the effect of this part is the rated speed motor, is increased to the running speed that meets the feed water pump declared working condition; The one, pump impeller, turbine, scoop tube and recycle oil system, its effect is to regulate recycle oil by scoop tube, changes the oil-filled amount of Coupler pump impeller, turbine, thereby regulates the stepless time adjustment that secondary speed is realized output speed.
Existing renovation technique as shown in Figure 1, that frequency variator 3 is installed between power circuit breaker 1 and motor 2, the transmission shaft of motor 1 is connected with the input shaft 5 of hydraulic couplers 4, the driving gear 6 be fixedly connected with input shaft 5 and driven gear 7 engagements, the transmission shaft of driven gear 7 is fixedly connected with pump impeller 10, turbine 11 drives feed water pump 9 by output shaft 8, the speed-regulating function of hydraulic couplers is changed over to the constant speed output function, thereby realize the frequency control of motor speed of electrically driven feedpump, its advantage is to change greatly without the basis to hydraulic couplers and motor, only need new oil-adding pump to get final product, engineering work load is little, but still have 3～5% energy transmission loss of the specified through-put power of hydraulic couplers.
The model utility content
The purpose of this utility model is in order to solve the defect of above-mentioned prior art, provide a kind of frequency-conversion speed-regulation type to improve the hydraulic couplers electrically driven feedpump, can not change the Placement of existing motor, hydraulic couplers, feed water pump, and eliminate the energy transmission loss of hydraulic couplers, thereby reach the effect of frequency control of motor speed.
The purpose of this utility model can reach by taking following technological scheme:
Frequency-conversion speed-regulation type improves the hydraulic couplers electrically driven feedpump, comprise power circuit breaker, motor, hydraulic couplers and feed water pump, between described power circuit breaker and motor, frequency variator is installed, described hydraulic couplers comprises input shaft, output shaft and the driving gear be meshed and driven gear, the transmission shaft of described motor is connected with input shaft, described input shaft is fixedly connected with driving gear, it is characterized in that: described hydraulic couplers also comprises cog-wheel coupling, the transmission shaft of described driven gear is connected with output shaft by cog-wheel coupling, drive feed water pump by output shaft.
As a kind of preferred version, described cog-wheel coupling comprises external gear and two internal gears, and described two internal gears are connected with output shaft with the transmission shaft of driven gear respectively.
As a kind of preferred version, described two internal gears adopt the fastening means of screw and locating stud to be connected with output shaft with the transmission shaft of driven gear respectively.
As a kind of preferred version, on each teeth groove of described external gear, be equipped with lubrication hole.
As a kind of preferred version, described external gear adopts hard flank of tooth crowned teeth.
As a kind of preferred version, described hydraulic couplers is equipped with electric lubricating oil pump outward.
The utility model has following beneficial effect with respect to prior art:
1, the utility model is not in the situation that change existing motor, hydraulic couplers and feed water pump Placement, the inside and outside local flow improvement that carries out to hydraulic couplers, change the hydraulic couplers mode of speed regulation into frequency control way, to reduce specific consumption of feed-water pump, pump impeller, turbine and working oil system are removed simultaneously, and cancel the working oil oil cooler, thus the energy transmission loss of hydraulic couplers eliminated, and guaranteed the original accuracy of manufacturing of hydraulic couplers.
2, the gear teeth of cog-wheel coupling of the present utility model adopt profile of tooth, axial modification technology, the meshing interference that in the time of can effectively eliminating on-load, gear teeth resiliently deformable and thermal distortion cause, the impact of the shaft axis of driven gear transmission shaft and output shaft shaft axis decentraction when driven gear transmission shaft and output shaft can be eliminated load carrying by the cog-wheel coupling flexible connection, the life-span of prolongation driven gear.
The accompanying drawing explanation
Fig. 1 is traditional hydraulic couplers electrically driven feedpump structural principle block diagram.
The structural principle block diagram that Fig. 2 is the utility model hydraulic couplers electrically driven feedpump.
Embodiment
Embodiment 1:
As shown in Figure 2, the hydraulic couplers electrically driven feedpump of the present embodiment comprises power circuit breaker 1, motor 2, hydraulic couplers 4 and feed water pump 9, between described power circuit breaker 1 and motor 2, frequency variator 3 is installed, described hydraulic couplers 4 comprises input shaft 5, driving gear 6, driven gear 7, output shaft 8 and cog-wheel coupling 10, the transmission shaft of described motor 2 is connected with input shaft 5, described input shaft 5 is fixedly connected with driving gear 6, described driving gear 6 is meshed with driven gear 7, the transmission shaft of described driven gear 7 is connected with output shaft 8 by cog-wheel coupling 10, drive feed water pump 9 by output shaft 8.
The hydraulic couplers electrically driven feedpump of the present embodiment is as follows to the transformation process of hydraulic couplers:
1) remove pump impeller, turbine and the working oil system of former hydraulic couplers, and cancel the working oil oil cooler, retain driving gear 6, driven gear 7 and output shaft 8, an external electric lubricating oil pump 11;
2) adopt custom-designed cog-wheel coupling 10 flexible connections between the transmission shaft of driven gear 7 and output shaft 8, because centre has increased the flexible link of floating, to guarantee the smooth operation precision, can effectively reduce working machine to the radial and axial impact load of the transmission shaft of driven gear 7, extend the life-span of driven gear 7;
3) cog-wheel coupling 10 has external gear and two internal gears, wherein on each teeth groove of external gear, be equipped with lubrication hole, by electric lubricating oil pump 11 enforced lubricatings, two internal gears are connected with output shaft 8 with the transmission shaft of driven gear 7 respectively, and locking method adopts the form of screw and locating stud transmitting torque;
4) external gear of cog-wheel coupling 10 adopts the hard flank of tooth crowned teeth of fine grinding, material selection 18CrNiMo7-6, and through carburizing, quenching, gear-grinding process manufacture, internal gear adopts 40CrNiMoA scheduling nitriding treatment; The gear teeth of cog-wheel coupling 10 adopt profile of tooth, axial modification technology, the meshing interference that in the time of can effectively eliminating on-load, gear teeth resiliently deformable and thermal distortion cause.
In the transformation process of above-described embodiment, the basis of hydraulic couplers, without change, does not change the Placement of hydraulic couplers and motor, feed water pump yet, and the improvement project amount is little, reduces reforming cost.
The above; it is only the utility model preferred embodiment; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in scope disclosed in the utility model; be equal to replacement or changed according to the technical solution of the utility model and model utility design thereof, all being belonged to protection domain of the present utility model.
Claims (6)
1. frequency-conversion speed-regulation type improves the hydraulic couplers electrically driven feedpump, comprise power circuit breaker, motor, hydraulic couplers and feed water pump, between described power circuit breaker and motor, frequency variator is installed, described hydraulic couplers comprises input shaft, output shaft and the driving gear be meshed and driven gear, the transmission shaft of described motor is connected with input shaft, described input shaft is fixedly connected with driving gear, it is characterized in that: described hydraulic couplers also comprises cog-wheel coupling, the transmission shaft of described driven gear is connected with output shaft by cog-wheel coupling, drive feed water pump by output shaft.
2. frequency-conversion speed-regulation type according to claim 1 improves the hydraulic couplers electrically driven feedpump, and it is characterized in that: described cog-wheel coupling comprises external gear and two internal gears, and described two internal gears are connected with output shaft with the transmission shaft of driven gear respectively.
3. frequency-conversion speed-regulation type according to claim 2 improves the hydraulic couplers electrically driven feedpump, it is characterized in that: described two internal gears adopt the fastening means of screw and locating stud to be connected with output shaft with the transmission shaft of driven gear respectively.
4. frequency-conversion speed-regulation type according to claim 2 improves the hydraulic couplers electrically driven feedpump, it is characterized in that: on each teeth groove of described external gear, be equipped with lubrication hole.
5. improve the hydraulic couplers electrically driven feedpump according to the described frequency-conversion speed-regulation type of claim 2-4 any one, it is characterized in that: described external gear adopts hard flank of tooth crowned teeth.
6. improve the hydraulic couplers electrically driven feedpump according to the described frequency-conversion speed-regulation type of claim 1-4 any one, it is characterized in that: described hydraulic couplers is equipped with electric lubricating oil pump outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203425485U CN203335769U (en) | 2013-06-14 | 2013-06-14 | Improved frequency control type hydraulic coupler electrically driven feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203425485U CN203335769U (en) | 2013-06-14 | 2013-06-14 | Improved frequency control type hydraulic coupler electrically driven feed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335769U true CN203335769U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203425485U Ceased CN203335769U (en) | 2013-06-14 | 2013-06-14 | Improved frequency control type hydraulic coupler electrically driven feed pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN203335769U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088977A (en) * | 2014-07-26 | 2014-10-08 | 河北瑞兆激光再制造技术有限公司 | Overhauling method for hydraulic coupler |
| CN104196696A (en) * | 2014-08-26 | 2014-12-10 | 北京联优创展科技有限公司 | Water pump driving system |
-
2013
- 2013-06-14 CN CN2013203425485U patent/CN203335769U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088977A (en) * | 2014-07-26 | 2014-10-08 | 河北瑞兆激光再制造技术有限公司 | Overhauling method for hydraulic coupler |
| CN104196696A (en) * | 2014-08-26 | 2014-12-10 | 北京联优创展科技有限公司 | Water pump driving system |
| CN104196696B (en) * | 2014-08-26 | 2016-03-16 | 北京联优创展科技有限公司 | Pump drive system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20210614 |
|
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20151027 Decision number of declaring invalidation: 27267 Granted publication date: 20131211 |