CN2629339Y - Single-tank water resisting motor starting device - Google Patents
Single-tank water resisting motor starting device Download PDFInfo
- Publication number
- CN2629339Y CN2629339Y CN 03257138 CN03257138U CN2629339Y CN 2629339 Y CN2629339 Y CN 2629339Y CN 03257138 CN03257138 CN 03257138 CN 03257138 U CN03257138 U CN 03257138U CN 2629339 Y CN2629339 Y CN 2629339Y
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- Prior art keywords
- motor
- short circuit
- starting
- electrodes
- resistance
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- Expired - Fee Related
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Abstract
The utility model discloses a winding motor starting device. When starting the motor, a three phase winding motor and a rotor winding need to be short connected through three electrodes and in the resistance liquid of one resistance box, then a lifting short disk connects the three electrodes gradually to make the motor run properly gradually. When a generator unit stator electrifies, a rotor induced current is short connected through the electrode in the resistance liquid and drives the motor, then the lifting short disk reduces the circuit resistance of the rotor, speeds the motor to the rated speed, at last the electrode and the short disk are short connected completely, thereby completing the starting process.
Description
The utility model belongs to three-phase alternating current wound rotor asynchronous motor starting device.Be applicable to the starting of all three-phase wound rotor asynchronous motors.
Present three box water resistance starting devices that use are although superior performance because complex structure, cost of manufacture height, thereby adopts when only limiting to super-huge motor starting.
The purpose of this utility model, foot provides a kind of simple in structure, with low cost, can be widely used in the new equipment of winding-type motor starting.
The purpose of this utility model adopts following measure to realize: this is by three electrodes, a short circuit dish and the starting device of motor that resistance box is formed that has lifting arm.Three electrodes are isosceles triangle and are installed in the resistance box top, its upper end respectively with by corresponding being connected of rotor winding terminal of the winding-type motor that started, 10 centimeters in the resistor fluid in the isometric immersion resistance box in its lower end.Electrode is made by fine copper.Its sectional area can designing and producing more than 1.5 times according to the rotor rated current.Three electrode mutual spacings are equidistant.Its spacing is big more bigger by the capacity of actuating motor.The short circuit dish is in bottom half, is made up of copper coin and an insulating bar of 1 centimetre of thickness.The diameter of short circuit dish should be to reach the length that can guarantee after the lifting with three complete short circuits of electrode.The spacing of short circuit dish and electrode must be greater than the mutual distance of electrode when not promoting.Guarantee to start initial current by the mutual short circuit of electrode, to obtain less starting current.The lifting arm lower end is fixed on short circuit disk center, its upper end is exposed on the resistance box top cover, (lifting device is identical with three box water resistors uses) resistance box is made by ambroin plate outer lining iron plate so that outside together lifting device is connected, and its end cap is selected the glass filament plate of 1 cm thick for use.In order to fix three electrodes, reach lifting device is installed, and leave steam vent, in order to exhaust and additional resistor fluid.Resistor fluid is formed by alkali and water modulation, changes its concentration, can reconcile the size of electric motor starting electric current.The volume of resistance box increases and decreases with the amount of capacity of motor, and conditions permit is then better big more.
The utility model has the advantages that simple in structure, whole device only uses a resistance box, three electrodes and the short circuit dish that can promote, its wiring is also extremely simple, only need the rotor winding terminal should be connected with three electrode pairs of starting device, the short circuit dish that can promote again is connected with the lifting device of outside, just can finish the whole starting process of motor.
Secondly owing to adopt single box, the rotor winding current through electrode directly in resistor fluid behind the short circuit, again by the short circuit dish that promotes gradually with the complete short circuit of electrode.In the whole process, the rotor loop resistance value reduces gradually, and motor speed rises gradually, and the rated speed that reaches motor behind short circuit runs well motor.The work effect is very desirable reliable.Avoided burning out by the serious accident of actuating motor because of starting device faults itself such as short circuit, ground connection etc. causing.Under the situation that reduces starting current, realize that safe starting runs well.
Description of drawings
Fig. 1 is embodiment of the present utility model
The capacity of motor is 380V for the 380KW rated voltage in the example that Fig. 1 provides, and its stator three-phase is connected with power supply through contactor J, and its rotor winding terminal is connected with three electrode a.b.c. of single case water resistance type starting device of motor respectively.Electrode is by long 70 centimetres, and the red copper bar that diameter is 2.4 centimetres is made.Mutual spacing r is 40 centimetres.Electrode and short circuit dish spacing R are 50 centimetres, and short circuit dish G is by a cm thick, and the copper plate that diameter is 60 centimetres is made.Lifting arm L is made by the ambroin of 2 centimetres of diameters rod, and its lower end is fixed on the center of G, and its upper end is connected with lifting device T on being installed in the resistance box top cover.Resistance box is 75 centimetres of diameters, and is high 100 centimetres, the cylinder of thick 0.5 centimetre ambroin bucket outer lining iron plate.The interior dress degree of depth is 65 centimetres a resistor fluid, and its top cover is made of thick 1 centimetre glass filament plate.
During motor D starting, the J conducting, D stator work, rotor winding induced current by starting device a.b.c in resistor fluid behind the short circuit, the D entry into service, T promotes G, D rotor loop resistance reduces gradually, and D accelerates to rated speed gradually, the complete short circuit of G and a.b.c, T quits work, D starting finishing normal operation.
T returns to G after J disconnects and is treated the start position by the outside robot control system(RCS) control of D.
Claims (2)
- A kind of novel single case water resistance type starting device of motor is characterized in that by a resistance box, and device is three electrodes of the a.b.c in the resistor fluid and the short circuit dish composition that can promote in case,(1) resistance box is a cylinder made from insulating material, the short circuit dish of its top cover in order to fix three electrodes and can promote, and its volume increases and decreases with amount of capacity,
- (2) three electrodes of a.b.c respectively with the corresponding connection of winding-type motor rotor winding, and in resistor fluid direct short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03257138 CN2629339Y (en) | 2003-05-09 | 2003-05-09 | Single-tank water resisting motor starting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03257138 CN2629339Y (en) | 2003-05-09 | 2003-05-09 | Single-tank water resisting motor starting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2629339Y true CN2629339Y (en) | 2004-07-28 |
Family
ID=34254139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03257138 Expired - Fee Related CN2629339Y (en) | 2003-05-09 | 2003-05-09 | Single-tank water resisting motor starting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2629339Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931887A (en) * | 2012-11-21 | 2013-02-13 | 新乡市豫新电器有限公司 | Soft starter for slip ring motor |
-
2003
- 2003-05-09 CN CN 03257138 patent/CN2629339Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931887A (en) * | 2012-11-21 | 2013-02-13 | 新乡市豫新电器有限公司 | Soft starter for slip ring motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |