CN205136059U - Anhydrous shutdown protection device of electric centrifugal pump - Google Patents
Anhydrous shutdown protection device of electric centrifugal pump Download PDFInfo
- Publication number
- CN205136059U CN205136059U CN201520824648.0U CN201520824648U CN205136059U CN 205136059 U CN205136059 U CN 205136059U CN 201520824648 U CN201520824648 U CN 201520824648U CN 205136059 U CN205136059 U CN 205136059U
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- China
- Prior art keywords
- pump
- electric current
- relay
- centrifugal pump
- controller
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- Expired - Fee Related
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Abstract
Anhydrous shutdown protection device of electric centrifugal pump relates to pump technical field, its characterized in that: including relay, electric current appearance and controller, the relay include three the setting respectively on the three -phase power line of pump distribution motivation, the electric current appearance set up respectively on or many in arbitrary three -phase power line, the controller be connected with relay and electric current appearance respectively. The occasion that this patent was suitable for is extensive, and no matter the pump is carried the clear water or is contained the impurity medium, or it all can be equipped with dangerous medium such as to corrode, easily fire, easily explode, do not receive the operating pressure of pump, the restriction of flow isoparametric yet, automatic control, convenient to use, the reliability is high.
Description
Technical field:
The utility model relates to pump technical field, specifically the anhydrous shutdown protector of electric centrifugal pump.
Background technique:
When the centrifugal pump of a lot of structure operates, the medium that the parts thereof of pump needs it to carry cools, as mechanical seal, bearing, Balance disc etc.When occurring not having water suddenly in certain external cause pipeline, to such an extent as to do not have medium to operate in pump, now these component will there will be dry friction and then infringement, therefore need to prevent the situation due to pipeline unexpected lack of water damage pump.
The common methods taked at present mainly contains: pressure monitoring method and level monitoring method.Pressure monitoring ratio juris is when pump is anhydrous, and delivery side of pump pressure will decline, and now provides signal and shuts down, this method pump change of pressure comparatively large (as pump high volume work cavitation) or delivery side of pump pressure is lower time, easily report by mistake; Level monitoring ratio juris sets up float at the place such as water tank of import, shuts down when float arrives warning line, but at a lot of closed system or do not have the occasion of water tank not realize.
Model utility content:
Technical problem to be solved in the utility model is to provide a kind of easy to use, and reliability is high, and Security is high, the anhydrous shutdown protector of electric centrifugal pump of wide adaptability.
Technical problem to be solved in the utility model adopts following technological scheme to realize:
The anhydrous shutdown protector of electric centrifugal pump; it is characterized in that: comprise relay, electric current instrument and controller; described relay comprises on three three-phase power lines being separately positioned on pump distribution motivation; described electric current instrument is on to be separately positioned in any three-phase power line one or more of, and described controller is connected with relay and electric current instrument respectively.
Described electric current instrument is arranged on the rear end of relay.
Pump, when anhydrous running, is equivalent to motor substantially in idle running, and now the running current of pump distribution motivation is about as much as 30% when pump runs well.The working principle of this patent, as accompanying drawing: join any phase current of pump distribution motivation by monitoring pump, when pump is joined motor current sharply bust is to setting value; feedback signal will be sent immediately to controller; disconnect relay, cut off the power supply of pump distribution motivation, reach the object of protection pump assembly.
The beneficial effects of the utility model are: the occasion that this patent is suitable for is extensive, and no matter pump is conveying clear water or impure medium, or burn into is inflammable, explosive etc., and danger medium all can be equipped with; Also not by working pressure, the isoparametric restriction of flow of pump, automatically control, easy to use, reliability is high.
Accompanying drawing illustrates:
Structural representation when Fig. 1 is the utility model use.
Embodiment:
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
As shown in Figure 1; the anhydrous shutdown protector of electric centrifugal pump; comprise relay, electric current instrument and controller; relay comprises on three three-phase power line A, B and C being separately positioned on pump distribution motivation; electric current instrument is separately positioned on the A phase power line in any three-phase power line, and controller is connected with relay and electric current instrument respectively.Electric current instrument is arranged on the rear end of relay.The device of embodiment is connected in the starting circuit of pump distribution motivation, then presets protection value according to the rated current of pump distribution motivation, so just can prevent the damage that pump distribution motivation is brought because of dehydration.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. the anhydrous shutdown protector of electric centrifugal pump; it is characterized in that: comprise relay, electric current instrument and controller; described relay comprises on three three-phase power lines being separately positioned on pump distribution motivation; described electric current instrument is on to be separately positioned in any three-phase power line one or more of, and described controller is connected with relay and electric current instrument respectively.
2. the anhydrous shutdown protector of electric centrifugal pump according to claim 1, is characterized in that: described electric current instrument is arranged on the rear end of relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824648.0U CN205136059U (en) | 2015-10-22 | 2015-10-22 | Anhydrous shutdown protection device of electric centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824648.0U CN205136059U (en) | 2015-10-22 | 2015-10-22 | Anhydrous shutdown protection device of electric centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205136059U true CN205136059U (en) | 2016-04-06 |
Family
ID=55621858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520824648.0U Expired - Fee Related CN205136059U (en) | 2015-10-22 | 2015-10-22 | Anhydrous shutdown protection device of electric centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205136059U (en) |
-
2015
- 2015-10-22 CN CN201520824648.0U patent/CN205136059U/en not_active Expired - Fee Related
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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: 20160406 Termination date: 20171022 |