CN202441568U - Energy-efficient submerged motor pump, which prevents motor from burning under overload, open-phase and water shortage conditions - Google Patents
Energy-efficient submerged motor pump, which prevents motor from burning under overload, open-phase and water shortage conditions Download PDFInfo
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- CN202441568U CN202441568U CN2011205578698U CN201120557869U CN202441568U CN 202441568 U CN202441568 U CN 202441568U CN 2011205578698 U CN2011205578698 U CN 2011205578698U CN 201120557869 U CN201120557869 U CN 201120557869U CN 202441568 U CN202441568 U CN 202441568U
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Abstract
The utility model discloses an energy-efficient submerged motor pump, which prevents a motor from burning under overload, open-phase and water shortage conditions. The energy-efficient submerged motor pump comprises three-phase windings and is characterized in that at least two-phase windings in the three-phase windings are respectively provided with a protector, each protector comprises a moving contact and a static contact, when the temperature of the moving contact is lower than a set temperature, the moving contact is contacted to the static contact, and when the temperature exceeds the set temperature, the moving contact is separated from the static contact. According to the utility model, each phase of the three-phase AC motor is directly provided with a protector, the windings are timely protected from overheating, the motor is effectively prevented from burning out, and the price of the protector is low, thereby cost is low.
Description
Technical field
The utility model relates to Submerged Motor Pumps, particularly a kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor.
Background technique
Submersible electric pump motor often adopts threephase asynchronous machine, and its operation is to utilize threephase AC to feed three phase windings of motor, in stator cavity, produces rotating magnetic field, and rotor conductor is the magnetic line of force of cutting magnetic field relatively, produces rotatablely moving of rotor, and motor is turned over.
In reality, in order to guarantee motor safety work, motor all has short-circuit protection and overload protection arrangement,, cuts off the electricity supply protection motor and power supply line automatically so that when breaking down.
Existing protector is no matter be external or built-in; It all is to move through the curtage signal in the sensing circuit; Can't directly respond to the temperature in the winding and cost an arm and a leg; But in the reality, no matter be that overload, phase shortage or radiation system lost efficacy, the immediate cause of burn-down of electric motor all is that heating in winding produces high temperature.And existing protector because of its sensing be indirect signals such as electric current and voltage, the one, exist action to lag behind, the 2nd, exist not being that the temperature rise that overload or lack of water cause can't be discerned, the phenomenon that causes submersible electric pump motor to damage happens occasionally.
At this, to not being that the temperature rise that overload or lack of water cause all is to cause because of radiation system loses efficacy, it divides the two kinds of situation of doing.Wherein a kind of situation is lack of water to occur in the middle of Submerged Motor Pumps uses; Because of using the central heat that produces to feed water through the casing transmission, submersible electric pump motor dispels the heat; In case water shortage status takes place in the middle of using, and the heat that submersible electric pump motor produces just can't scatter and disappear and cause temperature to raise; A kind of in addition situation is to oil immersion type electric underwater pump, therefore plants in the winding of electric pump motor and is filled with the conduction oil that is used for heat transmission, and cause the problem of exploding for fear of expanded by heating; Conduction oil is generally all only pre-installed about eighty per cant of volume; This electric pump motor only under upright situation conduction oil could cover whole windings and play thermolysis, in case occur tilting or lie low, a part of motor windings will occur and expose outside conduction oil; Can't in time dispel the heat; Cause the conduction oil radiation system to lose efficacy, the motor heat is sharply accumulated, and finally cause the generation of burn-down of electric motor phenomenon.
The model utility content
To the problems referred to above; The utility model designed a kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor; It directly is provided with protector in each of the winding of three phase alternating current motor on mutually; Can in time protect the overheated of winding, can effectively avoid the generation of burn-down of electric motor phenomenon, and cheap.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
A kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor, include three phase windings, it is characterized in that: at least two phase windings of said three phase windings a protector is set respectively, protector includes movable touching plate and static touching plate; Said movable touching plate contacts with static touching plate when its temperature is lower than setting temperature, after its temperature surpasses setting temperature, separates with static touching plate.
Further, above-mentioned protector directly with corresponding windings in series setting mutually.
Further, above-mentioned protector does not connect with corresponding winding circuit mutually but both are fixed together, and each protector connect in regular turn the back be connected with the controller of Submerged Motor Pumps.
Further, above-mentioned movable touching plate is made up of the laminar body stack that two-layer different metal materials constitutes, and tinsel is littler than the thermal expansion coefficient of lower metal sheet at the middle and upper levels for it.
Further, above-mentioned movable touching plate tail end is fixed on the housing.
Further, above-mentioned movable touching plate afterbody is provided with a movable touching plate wiring terminal.
Further, above-mentioned static touching plate is connected through an insulating trip and housing.
Further, above-mentioned static touching plate afterbody is provided with a static touching plate wiring terminal.
When the rated power of Submerged Motor Pumps was less than 7.5kW, Submerged Motor Pumps can directly start, and the electric current of three phase windings of flowing through is little, and protector can directly be connected and inserted in the corresponding winding this moment.At this moment, when motor overload or phase shortage phenomenon occurring, the electric current that will cause flowing through protector increases; Temperature raises thereby the heating value that makes movable touching plate self increases, and the rising of movable touching plate temperature will make the expansion of generating heat rapidly of the double-level-metal chip architecture of movable touching plate, at this; Because of movable touching plate last layer tinsel littler than the thermal expansion coefficient of following one deck tinsel; The expansivity of lower metal sheet makes the bending deflection up gradually of whole movable touching plate greater than the upper strata tinsel, in case the movable touching plate temperature surpasses setting value; The amount of bow of movable touching plate is separated fully with static touching plate and is broken off with regard to being enough to; Cut off winding and motor cuts out, avoid winding temperature to continue to rise, avoid the generation of burn-down of electric motor phenomenon timely and effectively.
And when the rated power of Submerged Motor Pumps during greater than 7.5kW, excessive because of the electric current in the winding, Submerged Motor Pumps starts through controller; Each protector does not connect with corresponding winding circuit mutually but is fixed together with each winding at this moment, at this moment, and when motor overload or phase shortage phenomenon occurring; Electric current in the winding will increase, thereby the heating in winding amount is increased and temperature raises, and makes the protector that is fixed together with the winding intensification of being heated simultaneously; And the rising of protector movable touching plate temperature will make the expansion of generating heat rapidly of the double-level-metal chip architecture of movable touching plate, at this, because of movable touching plate last layer tinsel littler than the thermal expansion coefficient of following one deck tinsel; The expansivity of lower metal sheet makes the bending deflection up gradually of whole movable touching plate greater than the upper strata tinsel, in case the movable touching plate temperature surpasses setting value; The amount of bow of movable touching plate is separated fully with static touching plate and is broken off with regard to being enough to; Cut off controller and motor cuts out, avoid winding temperature to continue to rise, avoid the generation of burn-down of electric motor phenomenon timely and effectively.
At this; More than the Placement of both protectors and winding can play protection to the problem that the Submerged Motor Pumps radiation system lost efficacy, in case because of electric pump use in the middle of generation lack of water or oil immersed type electric pump occurrence of tilting, cause the heat radiation of submersible electric pump motor to carry out; Temperature in the motor windings will raise; And the protector temperature that is arranged on the corresponding windings also can raise simultaneously, makes the expansion of generating heat rapidly of the double-level-metal chip architecture of movable touching plate, the bending deflection up gradually of whole movable touching plate; In case the temperature of movable touching plate surpasses setting value; The amount of bow of movable touching plate makes it separate fully with static touching plate and breaks off with regard to being enough to, and cuts off winding or controller and motor cuts out, and avoids the generation of burn-down of electric motor phenomenon timely and effectively.
Description of drawings
The connection diagram of protector when Fig. 1, the utility model three phase windings employing star connection;
The connection diagram of protector when Fig. 2, the utility model three phase windings employing delta connection;
The structural representation of Fig. 3, the utility model protector.
When Fig. 4, rated power adopt star connection greater than 7.5kW the utility model three phase windings and the connection diagram of protector;
When Fig. 5, rated power adopt delta connection greater than 7.5kW the utility model three phase windings and the connection diagram of protector.
Embodiment
As shown in Figure 1; A kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor; Include three phase winding X, Y, the Z of star connection, its rated power is less than 7.5kW, and said winding X, Y two go up each series connection mutually one protector 1 is set; In the middle of reality is used, also can on winding X, Z or Y, Z or three-phase, one protector 1 be set each series connection.
As shown in Figure 3, said protector 1 includes movable touching plate 11 and static touching plate 12.Said movable touching plate 11 contacts with static touching plate 12 when protector 1 temperature is lower than setting temperature, after protector 1 temperature surpasses setting temperature, separates with static touching plate 12.
In the present embodiment; Movable touching plate 11 is made up of the laminar body stack that two-layer different metal materials constitutes; Tinsel 111 is littler than the thermal expansion coefficient of lower metal sheet 112 at the middle and upper levels for it, and this structure is provided with, and lower floor's tinsel 112 amount of deformation are greater than upper strata tinsel 111 amount of deformation when making movable touching plate 11 heatings or expanded by heating; In case the temperature of movable touching plate is higher than setting value, the amount of deformation that movable touching plate is crooked up just is enough to make it to separate with static touching plate 12.
Said movable touching plate 11 tail ends are fixed on the housing 13, and movable touching plate 11 afterbodys are provided with a movable touching plate wiring terminal 113 simultaneously.
Said static touching plate 12 is connected with housing 13 through an insulating trip 14, guarantees the effective insulation after dynamic and static contact 11,12 separates.Static touching plate 12 afterbodys are provided with a static touching plate wiring terminal 121 simultaneously.
As shown in Figure 2; Second kind of mode of execution for the utility model; A kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor, include three phase winding X, Y, the Z of delta connection, its rated power is less than 7.5kW; Last each series connection of said every phase winding X, Y, Z is provided with a protector 1, and its structure is identical with protector structure among the embodiment 1.
More than two kinds of example structure, in use, in case motor overload or phase shortage phenomenon occur; The electric current that will cause flowing through protector 1 increases, thereby movable touching plate 11 heating values is increased and temperature raises, and the rising of movable touching plate 11 temperature will make the expansion of generating heat rapidly of the double-level-metal chip architecture of movable touching plate 11; At this; Because of movable touching plate 11 upper strata tinsels 111 are littler than the thermal expansion coefficient of lower metal sheet 112, the expansivity of lower metal sheet 112 makes the bending deflection up gradually of whole movable touching plate 11 greater than upper strata tinsel 111; In case movable touching plate 11 temperature surpass setting value; The amount of bow of movable touching plate 11 is separated fully with static touching plate 12 and is broken off with regard to being enough to, and cuts off winding and motor cuts out, and avoids the generation of burn-down of electric motor phenomenon timely and effectively.
As shown in Figure 4; The third mode of execution for the utility model; A kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor, include three phase winding X, Y, the Z of star connection, its rated power is greater than 7.5kW; Respectively be connected on said winding X, Y, the Z three-phase and a protector 1, three protector 1 back of connecting in regular turn is set is connected with the controller 2 of control Submerged Motor Pumps startup.The structure of protector is identical with structure among the embodiment 1.
As shown in Figure 5; The 4th kind of mode of execution for the utility model; A kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor, include three phase winding X, Y, the Z of star connection, its rated power is greater than 7.5kW; Respectively be connected on said winding X, Y, Z three phase windings protector 1 is set, each protector 1 is connected successively and is connected with the controller 2 of control Submerged Motor Pumps startup.
For embodiment three and four, each protector 1 does not connect with corresponding winding circuit mutually but is fixed together with each winding at this moment, at this moment; When motor overload or phase shortage phenomenon occurring, the electric current in the winding will increase, thereby the heating in winding amount is increased and the temperature rising; Make the protector 1 that is fixed together with the winding intensification of being heated simultaneously, and the rising of protector movable touching plate 11 temperature will make the expansion of generating heat rapidly of the double-level-metal chip architecture of movable touching plate 11, at this; Because of movable touching plate upper strata tinsel 111 littler than the thermal expansion coefficient of lower metal sheet 112; The expansivity of lower metal sheet 112 makes the bending deflection up gradually of whole movable touching plate 11 greater than upper strata tinsel 111, in case movable touching plate 11 temperature surpass setting value; The amount of bow of movable touching plate 11 is separated fully with static touching plate 12 and is broken off with regard to being enough to; Cut off controller 2 and motor cuts out, avoid winding temperature to continue to rise, avoid the generation of burn-down of electric motor phenomenon timely and effectively.
For above four embodiments, in case Submerged Motor Pumps in the middle of using lack of water or oil immersed type electric pump occurrence of tilting takes place, can't carry out because of the heat radiation of submersible electric pump motor this moment; Temperature in the motor windings will raise; And protector 1 temperature that is arranged on the winding also can raise simultaneously, makes the expansion of generating heat rapidly of the double-level-metal chip architecture of movable touching plate 11, the bending deflection up gradually of whole movable touching plate 11; In case the temperature of movable touching plate 11 surpasses setting value; The amount of bow of movable touching plate 11 makes it separate fully with static touching plate 12 and breaks off with regard to being enough to, and cuts off winding or controller 2 and motor cuts out, and avoids the generation of burn-down of electric motor phenomenon timely and effectively.
To sum up; The utility model be a kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor; Its protector directly and the windings in series or the external setting that is connected of three phase alternating current motor; Can in time protect the temperature rise that overload, phase shortage, radiation system inefficacy cause, can effectively avoid the generation of burn-down of electric motor phenomenon.
In addition, the protector that the utility model relates to is equally applicable to common three phase alternating current motor, mounting type be equally directly series connection insert the three-phase winding at least two mutually in, can carry out real-time guard to overload or phase shortage, and cost economy, market price is no more than 5 yuan.
The above; It only is the preferred embodiments of the utility model; Be not that any pro forma restriction is done in invention, every foundation know-why of the present invention still belongs in the scope of technological scheme of the present invention any simple modification, equivalent variations or modification that above embodiment did.
Claims (8)
1. the energy-efficient Submerged Motor Pumps of a unburned motor when overload, phase shortage and lack of water includes three phase windings, it is characterized in that: at least two phase windings of said three phase windings a protector is set respectively, protector includes movable touching plate and static touching plate; Said movable touching plate contacts with static touching plate when its temperature is lower than setting temperature, after its temperature surpasses setting temperature, separates with static touching plate.
2. as claimed in claim 1 a kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor, it is characterized in that: said protector directly with corresponding windings in series setting mutually.
3. as claimed in claim 1 a kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor; It is characterized in that: said protector does not connect with corresponding winding circuit mutually but both are fixed together, and each protector connect in regular turn the back be connected with the controller of Submerged Motor Pumps.
As claim 1-3 each described a kind of when overload, phase shortage and the lack of water the energy-efficient Submerged Motor Pumps of unburned motor; It is characterized in that: said movable touching plate is made up of the laminar body stack that two-layer different metal materials constitutes, and tinsel is littler than the thermal expansion coefficient of lower metal sheet at the middle and upper levels for it.
5. as claimed in claim 4 a kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor, it is characterized in that: said movable touching plate tail end is fixed on the housing.
6. as claimed in claim 4 a kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor, it is characterized in that: said movable touching plate afterbody is provided with a movable touching plate wiring terminal.
7. as claimed in claim 5 a kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor, it is characterized in that: said static touching plate is connected through an insulating trip and housing.
8. as claimed in claim 4 a kind of when overload, phase shortage and lack of water the energy-efficient Submerged Motor Pumps of unburned motor, it is characterized in that: said static touching plate afterbody is provided with a static touching plate wiring terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205578698U CN202441568U (en) | 2011-12-28 | 2011-12-28 | Energy-efficient submerged motor pump, which prevents motor from burning under overload, open-phase and water shortage conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205578698U CN202441568U (en) | 2011-12-28 | 2011-12-28 | Energy-efficient submerged motor pump, which prevents motor from burning under overload, open-phase and water shortage conditions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441568U true CN202441568U (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205578698U Expired - Fee Related CN202441568U (en) | 2011-12-28 | 2011-12-28 | Energy-efficient submerged motor pump, which prevents motor from burning under overload, open-phase and water shortage conditions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108551220A (en) * | 2017-10-20 | 2018-09-18 | 台州市双龙泵业有限公司 | A kind of energy-efficient water pump stall, overload, phase shortage burn-free motor |
-
2011
- 2011-12-28 CN CN2011205578698U patent/CN202441568U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108551220A (en) * | 2017-10-20 | 2018-09-18 | 台州市双龙泵业有限公司 | A kind of energy-efficient water pump stall, overload, phase shortage burn-free motor |
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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 |
Granted publication date: 20120919 Termination date: 20171228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |