CN101649843A - Power device for instantaneous starting of centrifugal pump - Google Patents
Power device for instantaneous starting of centrifugal pump Download PDFInfo
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- CN101649843A CN101649843A CN200910102000A CN200910102000A CN101649843A CN 101649843 A CN101649843 A CN 101649843A CN 200910102000 A CN200910102000 A CN 200910102000A CN 200910102000 A CN200910102000 A CN 200910102000A CN 101649843 A CN101649843 A CN 101649843A
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- centrifugal pump
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- starting
- live axle
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Abstract
The invention relates to an instantaneous rotation driving device, aiming to provide a power device for realizing the instantaneous working condition of the fast starting of an impeller of a centrifugal pump. The power device comprises a variable frequency motor, a chain type coupling and a driving shaft which are sequentially connected, wherein the driving shaft is supported on a bearing seat through a pair of bearings, the other end of the driving shaft is provided with an instantaneous jointing device formed by jointing a half coupling and the driven end of a dynamic clutch, the driving shaft is also sleeved with at least one energy storage device formed by jointing an energy storage disc and the driven end of a static clutch, wherein the energy storage disc is supported on the drivingshaft through the bearings, and the static clutch is fixed on the driving shaft through a clutch fixing ring. The invention can realize the basic function of driving an impeller shaft of the centrifugal pump to stably rotate to work and completes driving tasks of multiple instantaneous working conditions, i.e. the direct starting and the rotating speed changing process of the variable frequency motor, the fast energy storage starting of different energy storage discs, and the like; and in addition, the power device can also realize the power and speed testing functions of instantaneous starting when being arranged on equipment which needs to be tested.
Description
Technical field
The present invention relates to a kind of instantaneous rotating driving device, particularly engage with the rotation accumulation of energy and dynamic the instantaneous of clutch of static clutch, realize the power plant of the transient working condition that centrifugal pump impeller starts fast by the accumulation of energy dish.
Background technique
Centrifugal pump is widely used in the every field of productive life, continuous progress along with development in science and technology and engineering application, the mapping of centrifugal pump start-up course becomes one of focus of people's concern gradually: for example utilize the quick startup of centrifugal pump can realize the Underwater Battery emission, high-power pumping plant can produce instantaneous pressure and impact or excessive load when starting, may cause the impact failure of equipment or electrical network, therefore the step response of waterpower rotating machinery start-up courses such as research and exploration centrifugal pump is to need a practical problem of solution badly.
Centrifugal pump being started to carry out model test be the most direct means of research pump startup process, is the quick startup that realizes centrifugal pump, needs the power plant that can realize that centrifugal pump starts fast.And the available dynamic device often is not to design at start-up course specially.If directly adopt motor as power source, when starting power greater than 7.5 kilowatt hours, need the employing reduced-voltage starting, otherwise can cause excessive load and transient current, influence the working life of motor even burn motor; Utilize the direct impeller of steam turbine can realize the quick startup of output terminal, but because steam turbine adopts high-pressure air source to drive, can't realize the test of steady state condition, versatility is relatively poor.
Therefore how designing a kind of waterpower rotating machinery stable state such as centrifugal pump and general dynamics unit that starts fast of being applicable to, is a practical problem needing solution badly.
Summary of the invention
The objective of the invention is provides a kind of feasible general dynamics unit for having stabilized driving simultaneously and starting the occasion that requires fast, and for realizing goal of the invention, the present invention is achieved through the following technical solutions:
For realizing goal of the invention, the present invention is achieved through the following technical solutions:
A kind of power plant that are used for instantaneous starting of centrifugal pump are provided, comprise the variable-frequency motor, chain coupling and the live axle that connect successively, described live axle is supported on the bearing support by pair of bearings, and the other end of live axle is equipped with by half-coupling and engages the instantaneous bonding apparatus of being formed with dynamic clutch driven end; Also be set with at least one group on the live axle and engage the energy storage apparatus of being formed by the accumulation of energy dish with static clutch driven end, wherein on live axle, static clutch is fixed on the live axle by the clutch retaining ring accumulation of energy dish by bearings.
As a kind of improvement, described static clutch is a slipping toothed electromagnetic clutch.
As a kind of improvement, described dynamic clutch be friction disk type magnetic clutch or magnetic particle coupling wherein any one.
As a kind of improvement, described variable-frequency motor, static clutch and dynamic clutch all are connected to frequency-variable controller by signaling line, and by the unified control of frequency-variable controller.
As a kind of improvement, half-coupling links to each other with the centrifugal pump impeller axle with elastic coupling flexible coupling by the rotational speed and torque detector successively, can test transient speed and torque.
Beneficial effect of the present invention is, the present invention not only can realize driving the fundamental function of centrifugal pump impeller stabilizer shaft rotary work, specifically, can finish the driving task of direct startup of variable-frequency motor and multiple instantaneous conditionss such as variable speed process, the quick startup of different accumulation of energy dish accumulation of energy; This device is loaded on the equipment that needs test starting process transient speed and power, can also realizes starting instantaneous measurement of power speed measuring function.
This device has good versatility on the start-up course of rotating machineries such as simulation centrifugal pump, can remedy the deficiency of existing power plant.
Description of drawings
Fig. 1 is the power plant schematic representation that is used for instantaneous starting of centrifugal pump;
Reference character is among the figure: variable-frequency motor 1, chain coupling 2, bearing side cover 3, bearing upper cover 4, bearing 5, static clutch 6, live axle 7, friction disk type magnetic clutch 8, half-coupling 9, rotational speed and torque detector 10, elastic coupling flexible coupling 11, centrifugal pump 12, rotational speed and torque detector bearing 13, bearing 14, bearing base 15, little accumulation of energy dish 16, clutch retaining ring 17, axle sleeve 18, big accumulation of energy dish 19, bearing 20, motor cabinet 21.
Embodiment
The power plant that are used for instantaneous starting of centrifugal pump among the present invention, comprise the variable-frequency motor 1, chain coupling 2 and the live axle 7 that connect successively, described live axle 7 is supported on the bearing support by bearing 5,14, bearing support is made up of the bearing base 15 with two bearing holes, bearing side cover 3 and bearing upper cover 4, makes things convenient for the dismounting of live axle; The other end of live axle 7 is equipped with by half-coupling 9 and engages the instantaneous bonding apparatus of being formed with dynamic clutch 8 driven ends; Big accumulation of energy dish 19 and little accumulation of energy dish 16 are installed on the live axle 7, and each accumulation of energy dish respectively is supported on the live axle 7 by pair of bearings 20, and engages with static clutch 6 driven ends respectively.Static clutch 6 is fixed on the live axle 7 by clutch retaining ring 17, control respectively static clutch 6 initiatively with the interlock and the disengagement of driven end, can realize the synchronous or asynchronous rotation of big accumulation of energy dish 19, little accumulation of energy dish 16 and live axle 7.Half-coupling 9 links to each other with the centrifugal pump impeller axle with elastic coupling flexible coupling 11 by rotational speed and torque detector 10 successively, can test transient speed and torque.Variable-frequency motor 1, static clutch 6 and dynamic clutch 8 all are connected to frequency-variable controller by signaling line, and by the unified control of frequency-variable controller.
It in the present embodiment accumulation of energy drive unit that contains two accumulation of energy dishes of size, also can realize installing the accumulation of energy drive unit of single or two above accumulation of energy dishes by the different live axle 7 of design length, and can be by selecting the size accumulation of energy dish different with density to be installed to change the size of this mechanism's accumulation of energy or load.
For drive output starts fast, the dynamic clutch 8 described in the present invention can be friction disk type magnetic clutch or magnetic particle coupling, and static clutch 6 can be selected slipping toothed electromagnetic clutch.
The operator scheme of power plant:
Utilize the device among the present invention can realize stable state rotation operating mode and instantaneous conditionss such as direct-connected startup of motor and the quick startup of accumulation of energy rotation.
Steady state condition: connect dynamic clutch 8, promptly can disconnect under the steady state condition also can the static clutch 6 of interlock, by frequency-variable controller the rotating speed of variable-frequency motor 1 is set, and starts variable-frequency motor 1 and can realize that steady state condition drives.
The direct-connected startup operating mode of variable-frequency motor: connect dynamic clutch 8, promptly can disconnect under this operating mode also can the static clutch 6 of interlock, by frequency-variable controller the rotating speed and the starting time of variable-frequency motor 1 is set, and starts variable-frequency motor 1 and can realize the direct-connected startup of motor.
The accumulation of energy rotation starts operating mode fast: connect primary power supply, disconnect dynamic clutch 8, promptly dynamically the active of clutch 8 is a disengaged condition with driven end.Connect static clutch 6, it is synchronous to be about to big accumulation of energy dish 19, little accumulation of energy dish 16 and live axle 7.Behind frequency-variable controller setting tachometer value, start variable-frequency motor 1, be the synchronous rotation accumulation of energy stage of variable-frequency motor 1, live axle 7, big accumulation of energy dish 19 and little accumulation of energy dish 16 this moment.After treating spin stabilization, connect dynamic clutch 8, make the instantaneous joint of friction disk of its drive end and driven end, can realize that energy storage apparatus drives the quick start-up course of output shaft.Can realize that by selecting different accumulation of energy dishes multiple accumulation of energy starts combination.
It should be noted that, in operating process, static clutch 6 must interlock or relieving when accumulation of energy dish and live axle 7 are all static, can not engage static clutch 6 when rotating in that live axle 7 is relative with the accumulation of energy dish, otherwise the between cog bump will take place, smash the consequence of static clutch 6.
Be instantaneous output speed of test starting and torque, half-coupling joins by rotational speed and torque detector and coupling and output shaft successively.
When dynamically clutch was selected the friction disk type magnetic clutch of DLK1-40 type for use, fashionable of the short circuit of instantaneous bonding apparatus was about 0.35s.For preventing that loosening the flying out of part from causing accident, at big accumulation of energy dish 19 and little accumulation of energy dish 16 peripheral regions safety cover is installed, guarantee personal security.
What should be understood that is: above-mentioned mode of execution is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the present invention's spirit scope all fall among protection scope of the present invention.
Claims (5)
1, a kind of power plant that are used for instantaneous starting of centrifugal pump, comprise the variable-frequency motor, chain coupling and the live axle that connect successively, it is characterized in that, described live axle is supported on the bearing support by pair of bearings, and the other end of live axle is equipped with by half-coupling and engages the instantaneous bonding apparatus of being formed with dynamic clutch driven end; Also be set with at least one group on the live axle and engage the energy storage apparatus of being formed by the accumulation of energy dish with static clutch driven end, wherein on live axle, static clutch is fixed on the live axle by the clutch retaining ring accumulation of energy dish by bearings.
2, the power plant that are used for instantaneous starting of centrifugal pump according to claim 1 is characterized in that, described static clutch is a slipping toothed electromagnetic clutch.
3, the power plant that are used for instantaneous starting of centrifugal pump according to claim 1 is characterized in that, described dynamic clutch be friction disk type magnetic clutch or magnetic particle coupling wherein any one.
4, be used for the power plant of instantaneous starting of centrifugal pump according to described any one of claim 1 to 3, it is characterized in that, described variable-frequency motor, static clutch and dynamic clutch all are connected to frequency-variable controller by signaling line.
5, be used for the power plant of instantaneous starting of centrifugal pump according to described any one of claim 1 to 3, it is characterized in that, half-coupling links to each other with the centrifugal pump impeller axle with elastic coupling flexible coupling apart from detector by the rotating speed commentaries on classics successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102000A CN101649843A (en) | 2009-08-25 | 2009-08-25 | Power device for instantaneous starting of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102000A CN101649843A (en) | 2009-08-25 | 2009-08-25 | Power device for instantaneous starting of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101649843A true CN101649843A (en) | 2010-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910102000A Pending CN101649843A (en) | 2009-08-25 | 2009-08-25 | Power device for instantaneous starting of centrifugal pump |
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| CN (1) | CN101649843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937498A (en) * | 2016-05-21 | 2016-09-14 | 李丽容 | Low-starting-force water pump device and control method of low-starting-force water pump device |
| CN107591953A (en) * | 2017-09-02 | 2018-01-16 | 陈建民 | Electromagnetic adjustable speed motor |
-
2009
- 2009-08-25 CN CN200910102000A patent/CN101649843A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937498A (en) * | 2016-05-21 | 2016-09-14 | 李丽容 | Low-starting-force water pump device and control method of low-starting-force water pump device |
| CN105937498B (en) * | 2016-05-21 | 2018-10-19 | 李丽容 | A kind of low startup power pumping plant and its control method |
| CN107591953A (en) * | 2017-09-02 | 2018-01-16 | 陈建民 | Electromagnetic adjustable speed motor |
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Open date: 20100217 |