CN207489752U - Threephase asynchronous coil temperature control protective device - Google Patents
Threephase asynchronous coil temperature control protective device Download PDFInfo
- Publication number
- CN207489752U CN207489752U CN201721699076.3U CN201721699076U CN207489752U CN 207489752 U CN207489752 U CN 207489752U CN 201721699076 U CN201721699076 U CN 201721699076U CN 207489752 U CN207489752 U CN 207489752U
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- CN
- China
- Prior art keywords
- coil
- temperature control
- breaker
- motor
- contactor
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of threephase asynchronous coil temperature control protective devices; including the coil being arranged on motor stator core; the coil surface is provided with temperature controller; temperature controller is held tightly together with coil with insulated paint; the Wiring port of motor is connected with wire connection terminal, breaker and contactor in turn, and wire connection terminal, breaker and contactor are connected with each other composition circuit successively.It solves the problems, such as in the prior art shaft production to be caused to be delayed since motor burns coil.
Description
Technical field
The utility model belongs to electric circuit protection equipment technical field, and in particular to a kind of threephase asynchronous coil temperature
Control protective device.
Background technology
At present, the motor dosage of each industrial and mining enterprises of China is very extensive, and the probability that motor burns coil is comparable
Height, this just causes the delay in production and the maintenance cost of great number to production unit, first introduces threephase motor below
Burn several main causes of coil：
1. power phase shortage：When motor works normally, after having a phase firewire therein because of other reasons dead electricity, lead to motor
Coil two-phase works, and motor winding high temperature is caused to burn.
2. excess load：After the power-equipment of motor institute load has exceeded the rated power of motor, cause motor line
It is burnt after circle continuous high temperature work.
3. the motor in moist working environment：Motor winding is in moist environment and works, due to its surface
Insulation degree declines to a great extent after making moist, and coil is caused to be in hot operation state, and prolonged hot operation makes coil burnout.
4. rotor sweeps thorax：The prolonged continuous work of motor so that bearing of motor is radially increased to axial gap
It after limiting value, is such as changed without bearing and works on, the stator made and the mutual frictional heating of rotor cause motor winding to burn.
Utility model content
The purpose of this utility model is to provide a kind of threephase asynchronous coil temperature control protective device, solves existing
Since motor burns the problem of coil causes shaft production to be delayed present in technology.
The utility model is the technical scheme adopted is that threephase asynchronous coil temperature control protective device, including setting
The coil on motor stator core is put, the coil surface is provided with temperature controller, and temperature controller is closely glued with coil with insulated paint
It is combined, the Wiring port of motor is connected with wire connection terminal, breaker and contactor in turn, wire connection terminal, breaker and connects
Tentaculum is connected with each other composition circuit successively.
The utility model is also characterized by
Temperature controller includes the cylinder-like shell of one end open, and fixed seat and stent are provided in shell, is fixed in fixed seat
There is lead-out wire, one end of the lead-out wire extends to outside temperature controller from the openend of shell and connects with the fuse of breaker
It connects, the other end of lead-out wire is connected with bimetal leaf, and one end of bimetal leaf is fixed on stent, and the other end of bimetal leaf connects
Movable contact is connect, the first stationary contact, the second stationary contact, the first stationary contact are respectively arranged on the outer surface of lead-out wire and outer casing inner wall
It is contacted with the second stationary contact with bimetal leaf.
Epoxy resin layer is provided on the inner wall of shell.
Bimetal leaf is elastic sheet metal.
Wire connection terminal, breaker, contactor connection mode be that A, B, C connection jaws of wire connection terminal connection power cord connects
1,2,3 ports of line terminals are connect respectively with 1,3,5 ports of breaker, 2,4,6 ports of breaker respectively with contactor
L1, L2, L3 port connect, and T1, T2, T3 port of contactor are connect respectively with 6,7,8 ports of wire connection terminal, wire connection terminal
U, the Wiring port of V, W port access motor.
The beneficial effects of the utility model are,
1. temperature sensing part generated power by electrical-coil ontology, temperature controller execution unit, make temperature controller connect or
It disconnects.Temperature controller structure is simple, and reliability is high, and using effect is good, and service life is long.
2. simple in structure, cheap, motor service life 3 years or more can be extended, maintenance rate greatly reduces.
Description of the drawings
Fig. 1 is the structure chart of the utility model threephase asynchronous coil temperature control protective device；
Fig. 2 is the side sectional view of the utility model threephase asynchronous coil temperature control protective device；
Fig. 3 is the temperature controller structure figure of the utility model threephase asynchronous coil temperature control protective device；
Fig. 4 is the circuit diagram of the utility model threephase asynchronous coil temperature control protective device.
In figure, 1. motors, 2. contactors, 3. wire connection terminals, 4. breakers, 5. temperature controllers, 6. coils, 7. lead-out wires, 8.
Epoxy resin layer, 9. shells, 10. fixed seats, 11. first stationary contacts, 12. movable contacts, 13. second stationary contacts, 14. bimetallics
Piece, 15. stents.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The utility model threephase asynchronous coil temperature control protective device, structure as depicted in figs. 1 and 2, including setting
The coil 6 on 1 stator core of motor is put, 6 surface of coil is provided with temperature controller 5, and temperature controller 5 is close with insulated paint with coil 6
It is bonded together, the Wiring port of motor 1 is connected with wire connection terminal 3, breaker 4 and contactor 2, wire connection terminal 3, open circuit in turn
Device 4 and contactor 2 are connected with each other composition circuit successively.
The structure of temperature controller 5 is provided with fixed seat as shown in figure 3, the cylinder-like shell 9 including one end open in shell 9
10 and stent 15, lead-out wire 7 is fixed in fixed seat 10, and one end of lead-out wire 7 is extended to from the openend of shell 9 outside temperature controller
Portion is simultaneously connect with the fuse of breaker 4, and the other end of lead-out wire 7 is connected with bimetal leaf 14, and one end of bimetal leaf 14 is consolidated
It is scheduled on the stent 15, the other end connection movable contact 12 of bimetal leaf 14, on 9 inner wall of outer surface and shell of lead-out wire 7
Be respectively arranged with the first stationary contact 11, the second stationary contact 13, the first stationary contact 11 and the second stationary contact 13 with bimetal leaf 14
Contact.
Epoxy resin layer 8 is provided on the inner wall of shell 9, epoxy resin layer 8 has preferable heat resistance and electrical insulating property,
Have the advantages that curing is convenient, adhesion strength is strong low with shrinking percentage.
Bimetal leaf 14 is elastic sheet metal.
Wire connection terminal 3, breaker 4, contactor 2 connection mode be A, B, C connection jaws of wire connection terminal 3 connection power supply
Line, 1,2,3 ports of wire connection terminal 3 are connect respectively with 1,3,5 ports of breaker 4,2,4,6 ports of breaker 4 respectively with
L1, L2, L3 port connection of contactor 2,6,7,8 ports with wire connection terminal 3 connect respectively for T1, T2, T3 port of contactor 2
It connects, the Wiring port of U, V, W port access motor of wire connection terminal 3.
The utility model threephase asynchronous coil temperature control protective device, circuit diagram is as shown in figure 4, close breaker
QK presses start button SB2, and ac contactor coil KM2 obtains electric, contactor main contacts KM1 closures, while contactor auxiliary is touched
Point KM2, which is closed self-locking control circuit, makes motor M work, due to temperature controller P1P2It is connected in control loop, when on coil temperature
P when rising to protection value1P2Automatic to disconnect, contactor coil dead electricity disconnects main contacts, motor stall, is protected so as to play
Protect the effect of motor.
FU1, FU2, FU3 are fuse, can play the role of protecting circuit safety operation, SB1 is stop button, is being needed
It is used during emergency shutdown.
The utility model threephase asynchronous is with the operation principle of coil temperature control protective device, when the coil 6 of motor 1
During temperature rise to the boundary value set, temperature controller 5 can disconnect control loop automatically, and when temperature drops to setting value, it can be certainly
It is dynamic to reset.Automatic disconnect is according to the difference of expansion of metal coefficient, and when temperature is increased to setting value, moving in temperature controller 5 is touched
The deformation of point 12 is more than the deformation of the first stationary contact 11 and the second stationary contact 13, so as to make bimetal leaf 14 whole to movable contact 12
Curving generates deformation, disconnects contact；It is when temperature drops to non-protected value to automatically reset, and bimetal leaf 14 restores
Original state makes contact be closed automatically, so as to which motor 1 be protected not burnt out because of high temperature.
The utility model threephase asynchronous coil temperature control protective device is respectively added by the three-phase coil for giving motor
Fill a temp control switch and then by three temperature detect switch (TDS) concatenations in the control loop of motor, designing a motor job
Temperature control point, this temperature control point according to motor workplace require temperature select, if motor is because various
Reason causes coil temperature to be just automatically stopped power supply power supply when reaching temperature control point, makes motor stall, treats motor
Coil temperature restore it is normal when, after fixing a breakdown, restarting motor can normal use, can effectively prevent the line of motor
Circle is burned out, and substantially reduces the frequency of maintenance of motor, improves the service life of motor.
Claims (5)
1. threephase asynchronous coil temperature control protective device, which is characterized in that including being arranged on motor (1) stator core
Coil (6), coil (6) surface is provided with temperature controller (5), and the temperature controller (5) is closely glued with coil (6) with insulated paint
It is combined, the Wiring port of the motor (1) is connected with wire connection terminal (3), breaker (4) and contactor (2) in turn, described
Wire connection terminal (3), breaker (4) and contactor (2) are connected with each other composition circuit successively.
2. threephase asynchronous according to claim 1 coil temperature control protective device, which is characterized in that the temperature control
Cylinder-like shell (9) of the device (5) including one end open, the shell (9) is interior to be provided with fixed seat (10) and stent (15), described
Lead-out wire (7) is fixed in fixed seat (10), one end of the lead-out wire (7) extends to temperature controller from the openend of shell (9)
Outside is simultaneously connect with the fuse of the breaker (4), and the other end of the lead-out wire (7) is connected with bimetal leaf (14), institute
The one end for stating bimetal leaf (14) is fixed on the stent (15), the other end connection movable contact of the bimetal leaf (14)
(12), the first stationary contact (11), the second stationary contact are respectively arranged on the outer surface of the lead-out wire (7) and shell (9) inner wall
(13), first stationary contact (11) and the second stationary contact (13) are contacted with bimetal leaf (14).
3. threephase asynchronous according to claim 2 coil temperature control protective device, which is characterized in that the shell
(9) epoxy resin layer (8) is provided on inner wall.
4. threephase asynchronous according to claim 2 coil temperature control protective device, which is characterized in that double gold
It is elastic sheet metal to belong to piece (14).
5. threephase asynchronous according to claim 1 coil temperature control protective device, which is characterized in that the wiring
Terminal (3), breaker (4), contactor (2) connection mode be that A, B, C connection jaws of wire connection terminal (3) connection power cord connects
1,2,3 ports of line terminals (3) are connect respectively with 1,3,5 ports of breaker (4), 2,4,6 ports of breaker (4) respectively with
L1, L2, L3 port connection of contactor (2), T1, T2, T3 port of contactor (2) respectively with 6,7,8 ends of wire connection terminal (3)
Mouth connection, the Wiring port of U, V, W port access motor of wire connection terminal (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721699076.3U CN207489752U (en) | 2017-12-08 | 2017-12-08 | Threephase asynchronous coil temperature control protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721699076.3U CN207489752U (en) | 2017-12-08 | 2017-12-08 | Threephase asynchronous coil temperature control protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207489752U true CN207489752U (en) | 2018-06-12 |
Family
ID=62457842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721699076.3U Expired - Fee Related CN207489752U (en) | 2017-12-08 | 2017-12-08 | Threephase asynchronous coil temperature control protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207489752U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277767A (en) * | 2019-05-07 | 2019-09-24 | 重庆全营紧固件有限公司 | A kind of intelligent electric machine protective device |
-
2017
- 2017-12-08 CN CN201721699076.3U patent/CN207489752U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277767A (en) * | 2019-05-07 | 2019-09-24 | 重庆全营紧固件有限公司 | A kind of intelligent electric machine protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20191208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |