CN108551220A - A kind of energy-efficient water pump stall, overload, phase shortage burn-free motor - Google Patents
A kind of energy-efficient water pump stall, overload, phase shortage burn-free motor Download PDFInfo
- Publication number
- CN108551220A CN108551220A CN201810185488.8A CN201810185488A CN108551220A CN 108551220 A CN108551220 A CN 108551220A CN 201810185488 A CN201810185488 A CN 201810185488A CN 108551220 A CN108551220 A CN 108551220A
- Authority
- CN
- China
- Prior art keywords
- static contact
- movable contact
- protector
- contact spring
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 230000003068 static effect Effects 0.000 claims abstract description 48
- 230000001012 protector Effects 0.000 claims abstract description 45
- 238000004804 winding Methods 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000007769 metal material Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 206010037660 Pyrexia Diseases 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The technical scheme is that a kind of energy-efficient water pump stall, overload, phase shortage burn-free motor, including three-phase windings, it is characterised in that：A protector is respectively set at least two phase windings of the three-phase windings; the protector includes movable contact spring and static contact; the movable contact spring contacts when at a temperature below set temperature with static contact; it is detached with static contact higher than after set temperature in its temperature; the movable contact spring tail portion is provided with a movable contact spring binding post; the static contact tail portion is provided with a static contact binding post; it is parallel with a heating resistor below the static contact; heating resistor is dielectrically separated from static contact, and heating resistor both ends are connected on static contact binding post and movable contact spring binding post.The generation of motor damage phenomenon is effectively avoided, and protector is cheap, cost economy.
Description
Technical field
The present invention relates to a kind of motor for submerged pump, unburned more particularly, to a kind of energy-efficient water pump stall, overload, phase shortage
Motor.
Background technology
Submersible electric pump motor frequently with threephase asynchronous machine, operation be using three-phase alternating current be passed through the three-phase of motor around
Group, generates rotating excitation field in bore of stator, and the magnetic line of force of rotor conductor relatively cutting magnetic field generates the rotary motion of rotor,
Motor is set to turn over.
In practice, in order to ensure that motor trouble free service, motor have short-circuit protection and overload protection arrangement, to occur
It when failure, automaticallys cut off the power, protects motor and supply line.
Existing protector is that active and static contact separate formula, when occurring overloading or when phase shortage, electric current increased dramatically, and protect
The movable contact spring fever deformation on device is protected, detaches with static contact, to which disconnecting circuit makes motor stop, however moves after a period of time
Contact cooling after, movable contact spring restore deformation re-closed with static contact, motor restarting, movable contact spring because fever deformation and with it is quiet
Contact disconnects, and the startup that can so repeat motor stops, while can't resolve problem there is a great harm for motor, it is easy to burn
Motor.
Invention content
In view of the above-mentioned problems, the present invention devises a kind of energy-efficient water pump stall, overload, phase shortage burn-free motor, it is straight
It is connected in each phase of the winding of three phase alternating current motor and protector is set, the overheat of winding can be protected in time, can effectively be kept away
The generation for exempting from burn-down of electrical machinery phenomenon, so that protector movable contact spring will not automatically be closed because own temperature reduces before debugging
It closes, and cheap.
The technical scheme is that a kind of energy-efficient water pump stall, overload, phase shortage burn-free motor, including three-phase windings,
It is characterized in that：A protector is respectively set at least two phase windings of the three-phase windings, the protector includes movable contact spring
And static contact, the movable contact spring contact when at a temperature below set temperature with static contact, in its temperature higher than after set temperature
It is detached with static contact, the movable contact spring tail portion is provided with a movable contact spring binding post, and the static contact tail portion is provided with a static contact
Binding post, the static contact lower section are parallel with a heating resistor, and heating resistor both ends are connected to static contact binding post and move
On contact binding post.
Preferably, the protector is directly arranged with the windings in series of corresponding phase.
Preferably, the protector is not connected to the winding line of corresponding phase but the two is fixed together, and each protector
It is connect with the controller of immersible pump after sequentially connecting.
Preferably, the plates superposition that the movable contact spring is made of two layers of different metal materials forms, at the middle and upper levels metal
Piece is smaller than the coefficient of thermal expansion of lower metal piece.
Preferably, the movable contact spring tail end is fixed on protector housing.
Preferably, the static contact tail portion is connected by insulating trip and protector housing.
When the rated power of immersible pump is less than 7.5kW, immersible pump can directly initiate, and flow through the electric current of three-phase windings not
Greatly, protector can directly connect in the corresponding winding of access at this time.At this point, when there is motor overload or phase shortage phenomenon, it will
The electric current for leading to flow through protector increases, to make the calorific value increase of movable contact spring itself and temperature increases, and movable contact spring temperature
Raising will make the rapid fever expansion of double-level-metal chip architecture of movable contact spring, here, because under movable contact spring last layer sheet metal ratio
The coefficient of thermal expansion of one layer of sheet metal is small, and the expansion rate of lower metal piece is more than upper layer sheet metal, makes the gradual court of entire movable contact spring
Upper flexural deformation, once movable contact spring temperature is more than setting value, the amount of bow of movable contact spring is just enough to be kept completely separate and break with static contact
It opens, cuts off winding and motor is made to close, avoid winding temperature from continuing to rise, timely and effectively avoid the hair of burn-down of electrical machinery phenomenon
It is raw.The electric current in circuit can only be by generating heat, heating resistor heating at this time at heating resistor, and the heat at this makes dynamic touch
Piece is constantly in temperature constant state so that it is remained off between dynamic and static contact, only the energization of 1-2 watts of heating resistor, due to
The presence of heating resistor, electric current can become smaller, be not enough to start the normal operation of motor, motor is at closed state, keeps away
Exempt from winding temperature to continue to rise, dynamic and static contact can be prevented to be closed automatically and start motor, while avoiding the machine winding of immersible pump
There is high current to flow through and heating in winding is made to generate high temperature.
Here, the connection type of both of the above protector and winding can the problem of failure to submersible pump cooling system
Protection is played, is cooled down by water cooling because submersible pump is used, once water shortage occurs, there are certain skies inside oil immersed type electric pump motor
Between with blast protection, such as oil immersed type electric pump run-off the straight or drop to the ground, cause the heat dissipation oil inside submersible pump to misplace, can make motor
Heat dissipation can not carry out, the temperature in machine winding will increase, and the protector temperature being arranged in corresponding windings also can be same
Shi Shenggao, makes the rapid fever expansion of double-level-metal chip architecture of movable contact spring, entire movable contact spring will gradually flexural deformation upward, one
The temperature of denier movable contact spring is more than setting value, and the amount of bow of movable contact spring is just enough that it is made to be kept completely separate and disconnect with static contact, is generated heat
Resistance continuous heating so that movable contact spring is constantly in off-state so that motor is closed in time, and can prevent dynamic and static contact
Automatically it is closed and starts motor, timely and effectively avoid the generation of burn-down of electrical machinery phenomenon.
Description of the drawings
The structural schematic diagram of three protectors is connected when Fig. 1 is three-phase windings star connection of the present invention；
Fig. 2 is the structural schematic diagram that three-phase windings star connection of the present invention connects two protectors；
Fig. 3 is the structural schematic diagram of three-phase windings delta connection connection protector of the present invention；
Fig. 4 is that heating resistor of the present invention is arranged in internal protector structure schematic diagram；
Fig. 5 is the structural schematic diagram for the protector that heating resistor of the present invention is arranged below；
Fig. 6 is the structural schematic diagram for the protector that heating resistor of the present invention is disposed over；
Wherein：1-protector；11-protector housings；2-movable contact springs；21-movable contact spring binding posts；22-upper layer sheet metals；
23-lower metal pieces；3-static contacts；31-static contact binding posts；4-heating resistors；5-controllers；6-insulating trips.
Specific implementation mode
Below in conjunction with the accompanying drawings, invention is further described in detail.
As shown in Figure 1, a kind of energy-efficient water pump stall, overload, phase shortage burn-free motor, include the three-phase of star connection
Winding X, Y, Z, rated power are less than 7.5kw, have been arranged in series a protector 1 in winding X, Y two-phase, have actually used
In, a protector 1 can also be respectively arranged in series on winding X, Z or Y, Z or three-phase.
As shown in Fig. 2, for second of embodiment of the present invention, a kind of energy-efficient water pump stall, overload, phase shortage are unburned
Motor includes three-phase windings X, Y, Z of delta connection, and rated power is less than 7.5kW, described per on phase winding X, Y, Z
It is respectively arranged in series a protector 1, structure is identical as the protector structure in embodiment 1.
As shown in figure 3, for the third embodiment of the present invention, a kind of energy-efficient water pump stall, overload, phase shortage are unburned
Motor includes three-phase windings X, Y, Z of delta connection, and rated power is less than 7.5kW, described per on phase winding X, Y, Z
Two-phase on be respectively arranged in series a protector 1, structure is identical as the protector structure in embodiment 1.
As shown in Figures 4 to 6, the protector 1 includes movable contact spring 2 and static contact 3.The movable contact spring 2 is in 1 temperature of protector
It contacts, is detached with static contact 3 after 1 temperature of protector is more than set temperature, movable contact spring 2 with static contact 3 when less than set temperature
The plates superposition being made of two layers of different metal materials forms, thermal expansion of the sheet metal 22 than lower metal piece 23 at the middle and upper levels
Coefficient is small, the structure setting so that 23 deflection of lower layer's sheet metal is more than upper layer sheet metal when the fever of movable contact spring 2 or expanded by heating
22 deflections, once the temperature of movable contact spring is higher than setting value, the deflection that movable contact spring 2 is bent upward is just enough to make itself and static contact
3 separation.2 tail end of the movable contact spring is fixed on protector housing 11, while 2 tail portion of movable contact spring is provided with a movable contact spring binding post
21.The static contact 3 is connected by an insulating trip 6 with protector housing 11, is ensured effective exhausted after dynamic and static contact 2,3 detaches
Edge, while 3 tail portion of static contact is provided with a static contact binding post 31.3 lower section of the static contact is parallel with a heating resistor 4, sends out
4 both ends of thermal resistance are connected on static contact binding post 31 and movable contact spring binding post 21.
In two kinds of embodiments of Fig. 5 and Fig. 6, heating resistor itself is arranged upper grease proofing shell, avoids heating resistor sheet
Body is directly contacted with heat dissipation oil.
When in use, once there is motor overload or phase shortage phenomenon, the electric current increase for flowing through protector 1 is may result in, from
And make 2 calorific value increase of movable contact spring and temperature increases, and the raising of 2 temperature of movable contact spring will make the bimetallic strip of movable contact spring 2
The rapid fever expansion of structure, here, because 2 upper layer sheet metal 22 of movable contact spring is smaller than the coefficient of thermal expansion of lower metal piece 23, lower layer
The expansion rate of sheet metal 23 is more than upper layer sheet metal 22, makes the gradually flexural deformation upward of entire movable contact spring 2, once 2 temperature of movable contact spring
Degree is more than setting value, and the amount of bow of movable contact spring 2 is just enough to be kept completely separate with static contact 3 and disconnect, due to depositing for heating resistor 4
, electric current can become smaller, be not enough to start the normal operation of motor, and motor is at closed state, avoid winding temperature after
It is continuous to rise, the generation of burn-down of electrical machinery phenomenon is timely and effectively avoided, while the continuous heating of heating resistor 4 makes movable contact spring 2 one
It is straight to be in the state disconnected with static contact 3, dynamic and static contact 2,3 can be prevented to be closed automatically and start motor.
For above-described embodiment, once water shortage occurs in immersible pump use or oil immersed type electric pump is toppled over, at this time because
The heat dissipation of motor for submerged pump can not carry out, 1 temperature of protector that the temperature in machine winding will increase, and be arranged on winding
Also it can raise simultaneously, make the rapid fever expansion of double-level-metal chip architecture of movable contact spring 2, entire movable contact spring 2 will be gradually curved upward
Song deformation, once the temperature of movable contact spring 2 is more than setting value, the amount of bow of movable contact spring 2 is just enough that it is made to be kept completely separate with static contact 3
And disconnect, the presence of heating resistor 4 so that movable contact spring 2 is constantly in febrile state and is detached with static contact 3 so that motor closes
It closes, while dynamic and static contact 2,3 is constantly in off-state, timely and effectively avoids the generation of burn-down of electrical machinery phenomenon.
To sum up, protector of the present invention directly with the windings in series of three phase alternating current motor or external connected setting, can to overload,
Temperature rises caused by phase shortage, cooling system failure is protected in time, can effectively avoid the generation of burn-down of electrical machinery phenomenon.
In addition, protector of the present invention is equally applicable to common three phase alternating current motor, mounting means is equally direct
In at least two-phase of series connection access three-phase windings, real-time guard can be carried out to overload or phase shortage, and cost economy, market price do not surpass
Cross 5 yuan.
The above, be only the present invention better embodiment, not to invention make any form of restriction, it is every according to
According to the technical principle of the present invention any simple modification, equivalent variations or modification made to the above embodiment, the present invention is still fallen within
In the range of technical solution.
Claims (6)
1. a kind of energy-efficient water pump stall, overload, phase shortage burn-free motor, including three-phase windings, it is characterised in that：The three-phase
A protector is respectively set at least two phase windings of winding（1）, the protector（1）It include movable contact spring（2）And static contact
（3）, the movable contact spring（2）When at a temperature below set temperature and static contact（3）Contact, in its temperature higher than after set temperature
With static contact（3）Separation, the movable contact spring（2）Tail portion is provided with a movable contact spring binding post（21）, the static contact（3）Tail portion is set
It is equipped with a static contact binding post（31）, the static contact（3）Lower section is parallel with a heating resistor（4）, heating resistor（4）Both ends point
It is not connected to static contact binding post（31）With movable contact spring binding post（21）On.
2. a kind of energy-efficient water pump stall as described in claim 1, overload, phase shortage burn-free motor, it is characterised in that：It is described
Protector（1）Directly it is arranged with the windings in series of corresponding phase.
3. a kind of energy-efficient water pump stall as described in claim 1, overload, phase shortage burn-free motor, it is characterised in that：It is described
Protector（1）It is not connected to the winding line of corresponding phase but the two is fixed together, and each protector（1）It is after sequentially connecting and latent
The controller of water pump（5）Connection.
4. a kind of energy-efficient water pump stall, overload, phase shortage burn-free motor as claimed any one in claims 1 to 3, special
Sign is：The movable contact spring（2）The plates superposition being made of two layers of different metal materials forms, at the middle and upper levels sheet metal（22）
Than lower metal piece（23）Coefficient of thermal expansion it is small.
5. a kind of energy-efficient water pump stall as claimed in claim 4, overload, phase shortage burn-free motor, it is characterised in that：It is described
Movable contact spring（2）Tail end is fixed on protector housing（11）On.
6. a kind of energy-efficient water pump stall as claimed in claim 4, overload, phase shortage burn-free motor, it is characterised in that：It is described
Static contact（3）Tail portion passes through insulating trip（6）With protector housing（11）It is connected.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017109833688 | 2017-10-20 | ||
| CN201710983368 | 2017-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108551220A true CN108551220A (en) | 2018-09-18 |
Family
ID=63516343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810185488.8A Pending CN108551220A (en) | 2017-10-20 | 2018-03-07 | A kind of energy-efficient water pump stall, overload, phase shortage burn-free motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108551220A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070411A (en) * | 2019-12-12 | 2020-04-28 | 李素雅 | Cement mixer with motor protection function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718888Y (en) * | 2004-05-13 | 2005-08-17 | 郝云峰 | Motor with self-protecting device |
| CN201126958Y (en) * | 2007-12-07 | 2008-10-01 | 深大宇电器(深圳)有限公司 | Motor temperature, current protective circuit, protector as well as stirring machine with protector |
| CN201181885Y (en) * | 2008-02-22 | 2009-01-14 | 淄博市博山昊龙机械厂 | Three phase asynchronous motor for YGY series oil cooling type tumbling cylinder |
| CN202108684U (en) * | 2011-03-18 | 2012-01-11 | 森萨塔科技（常州）有限公司 | Air-conditioner compressor with protector for motor and air-conditioner |
| CN202405175U (en) * | 2011-11-25 | 2012-08-29 | 东明机电（深圳）有限公司 | Series excited motor, stator assembly and manual reset protector thereof |
| CN202441568U (en) * | 2011-12-28 | 2012-09-19 | 台州市双龙泵业有限公司 | Energy-efficient submerged motor pump, which prevents motor from burning under overload, open-phase and water shortage conditions |
| CN202888078U (en) * | 2012-11-16 | 2013-04-17 | 扬州宝珠电器有限公司 | Calibrated overheating overcurrent outage time delay reset protector |
| CN108448825A (en) * | 2017-10-20 | 2018-08-24 | 台州市双龙泵业有限公司 | High-efficiency energy-conserving small-sized three-phase water-pump motor |
| CN208128024U (en) * | 2017-10-20 | 2018-11-20 | 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 |
-
2018
- 2018-03-07 CN CN201810185488.8A patent/CN108551220A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718888Y (en) * | 2004-05-13 | 2005-08-17 | 郝云峰 | Motor with self-protecting device |
| CN201126958Y (en) * | 2007-12-07 | 2008-10-01 | 深大宇电器(深圳)有限公司 | Motor temperature, current protective circuit, protector as well as stirring machine with protector |
| CN201181885Y (en) * | 2008-02-22 | 2009-01-14 | 淄博市博山昊龙机械厂 | Three phase asynchronous motor for YGY series oil cooling type tumbling cylinder |
| CN202108684U (en) * | 2011-03-18 | 2012-01-11 | 森萨塔科技（常州）有限公司 | Air-conditioner compressor with protector for motor and air-conditioner |
| CN202405175U (en) * | 2011-11-25 | 2012-08-29 | 东明机电（深圳）有限公司 | Series excited motor, stator assembly and manual reset protector thereof |
| CN202441568U (en) * | 2011-12-28 | 2012-09-19 | 台州市双龙泵业有限公司 | Energy-efficient submerged motor pump, which prevents motor from burning under overload, open-phase and water shortage conditions |
| CN202888078U (en) * | 2012-11-16 | 2013-04-17 | 扬州宝珠电器有限公司 | Calibrated overheating overcurrent outage time delay reset protector |
| CN108448825A (en) * | 2017-10-20 | 2018-08-24 | 台州市双龙泵业有限公司 | High-efficiency energy-conserving small-sized three-phase water-pump motor |
| CN208128024U (en) * | 2017-10-20 | 2018-11-20 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070411A (en) * | 2019-12-12 | 2020-04-28 | 李素雅 | Cement mixer with motor protection function |
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