CN2717103Y - Water resistance starting speed regulation device for wound cage type asynchronous motor - Google Patents
Water resistance starting speed regulation device for wound cage type asynchronous motor Download PDFInfo
- Publication number
- CN2717103Y CN2717103Y CN 200420076249 CN200420076249U CN2717103Y CN 2717103 Y CN2717103 Y CN 2717103Y CN 200420076249 CN200420076249 CN 200420076249 CN 200420076249 U CN200420076249 U CN 200420076249U CN 2717103 Y CN2717103 Y CN 2717103Y
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- water
- resistance
- asynchronous motor
- water resistance
- speed regulating
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Abstract
The utility model discloses a water resistance starting and speed regulating device for winding cage asynchronous motor, which aims to solve the technical problem of starting and speed regulating for the winding cage asynchronous motor primarily. The device is composed of a water-resistance speed regulating control system and a water-resistance liquid cooling circulating system. An operating interface, a programmable program controller, a servo actuator and a water resistance in the water-resistance speed regulating control system are in electric connection successively, which is mainly characterized in that: the water resistance in the water-resistance speed regulating control system is connected with the stator loop of B part of the winding cage asynchronous motor in series, and speed governing control is done via the programmable program controller. The heat generated during the water-resistance starting and speed regulating makes the temperature of the water-resistance liquid raise, and the high-temperature water-resistance liquid is cooled via the water-resistance liquid cooling circulating system. The utility model solves the difficulties of starting and speed regulating of the winding cage asynchronous motor and has good starting performance, wide regulating range, non-stage and easy regulating control, reliable operation and simple maintenance.
Description
Affiliated technical field
Motor starting speed adjusting technique field under the utility model relates to a kind of motor water resistance starting speed regulating device, particularly a kind of cage asynchronous motor water resistance starting speed regulating device.
Background technology
Used blower fan, pump class, the compressor in industrial production field generally all has certain rich ability, this is owing to it is maximum stream flow on demand and adds certain reserve capabillity and cause as selection ground, and in actual the use, usually do not need or do not fill the whole flows of Xu Rangqi and bring into play, must regulate flow with certain means.At present, using more speed adjusting technique mainly is frequency control, pole changing and the string utmost point/doubly-fed adjustable speed etc.Though variable-frequency control technique efficient, precision are all very high, technical sophistication costs an arm and a leg, and the localization rate of parts and components is low, and the general user can not accept.Pole changing is reliable, effective, control and safeguard also simple, but can not continuous speed adjustment, the scope of application is narrow.Tandem/doubly-fed adjustable speed technology is ripe, reliable, efficient is high, but big to harmonic pollution in electric power net, technical sophistication requires quite high maintenance levels, and is only applicable to winding motor.For all the foregoing reasons, for plant equipment such as high pressure, high-power blower, pump class and air compressor machines, except that small part adopts the fluid power idol power device speed governing of poor efficiency, the overwhelming majority still adopts conventional approach, butterfly is cut down or the opening angle of shutter to change, the way that promptly changes additional drag is regulated flow, and this way is simple, has but caused a large amount of waste of energy.
At present, weak point at above-mentioned various speed adjusting techniques, in analyzing China's industrial production, use on the basis of ac speed control technology present situation, actual needs according to high pressure, high-power blower, load of the pumps speed governing, a kind of cage asynchronous motor that integrates the advantage of squirrel-cage asynchronous motor and wire wound asynchronous motor of development and Design begins to use for society generalization.The cage asynchronous motor does not have slip ring, carbon brush, has the reliability, the ease for maintenance that are equivalent to squirrel-cage asynchronous motor, and the wire wound asynchronous motor starting torque is big, the performance of the little series resistor speed governing of starting current but have again.The cage asynchronous motor stator divides A, B two parts, two shared same rotors, and A portion stator connects power supply, B portion stator serial connection water resistance, the energy-saving speed regulating that is specially adapted to high pressure, high-power blower and pump class etc. moves.
Summary of the invention
The purpose of this utility model is exactly that a kind of starting performance that provides for the speed governing of coupling cage asynchronous motor starting is good, speed-regulating range width, stepless easy-regulating, reliable, safeguard simple cage asynchronous motor water resistance starting speed regulating device.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of cage asynchronous motor water resistance starting speed regulating device, operation interface in the water resistance speed-adjusting and control system, plc, servo actuator, water resistance are electrically connected in proper order, it is characterized in that: the water resistance in the water resistance speed-adjusting and control system is serially connected with in the cage asynchronous motor B portion stator loop, carries out speed regulating control by plc.
Water resistance regulation and control system described in the utility model technical solution is made up of operation interface, plc, servo actuator, water resistance.Water resistance in the water resistance regulation and control system is serially connected with cage asynchronous motor B portion stator loop, utilize mechanical driving device, evenly change the distance between the two-plate in the resistor fluid, make resistance value by big stepless reducing until being zero, thereby make the starting process that the cage asynchronous motor evenly quickens, smooth starting to rated speed is finished the cage asynchronous motor.The speed governing operation control of cage asynchronous motor, carry out the speed-regulating instruction of rotating speed detection and reception operation interface by plc after, the rotating speed that the water resistance resistance that is serially connected in cage asynchronous motor B portion by change changes the cage asynchronous motor carries out speed governing operation.
Water resistance described in the utility model technical solution is serially connected with in the cage asynchronous motor B portion stator loop, because during the starting speed governing operation, the heat that slip power produced that consumes on the water resistance, the water resistance liquid temp is raise, the water resistance liquid cooling but circulatory system is passed through circulating pump with the high-temperature water resistor fluid exactly, be evacuated in the heat exchanger, after carrying out heat exchange through " hot water---cold air " (air-cooled) or " hot water---cold water " (water-cooled), cooled water power blocking solution turns back to water resistance tank again, guarantee that the water resistance liquid temp in the water resistance tank is constant, guarantee that the water resistance resistance is stable, can not influence the normal speed governing operation of device because of water power blocking solution excess temperature.
The beneficial effects of the utility model are, because the water resistance in the water resistance speed-adjusting and control system is serially connected with in the cage asynchronous motor B portion stator loop, adapt to the cage asynchronous motor and have that starting torque is big in the wire wound asynchronous motor, starting current is little, but the performance of series resistor speed governing can make that the cage asynchronous motor is realized evenly, level and smooth, stepless starting and speed governing.The speed governing operation control of cage asynchronous motor, owing to adopt plc, can detect the rotating speed of cage asynchronous motor operation, behind the speed-regulating instruction that receives operation interface, the forward and backward of control servo actuator changes two interelectrode distances of water resistance, just changes the size of water resistance resistance, change the cage slip of induction motor, make the operation of cage induction motor drive.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the but schematic diagram of the circulatory system of water resistance speed-adjusting and control system of the present utility model and water resistance liquid cooling.
Embodiment
As shown in Figure 1, water resistance in the water resistance speed-adjusting and control system (2) is serially connected with cage asynchronous motor (1) stator A, in the B portion stator loop in B two parts, detect the rotating speed of cage asynchronous motor (1) by plc (3), and behind the speed-regulating instruction that receives operation interface (4), control servo actuator (5) forward or reverse, adjust the spacing of water resistance (2) two-plate, promptly change the size of water resistance (2) resistance value, change the revolutional slip of cage asynchronous motor (1), realize the speed governing operation of cage asynchronous motor (1).The heat that is produced in the water resistance speed regulation process raises the water resistance liquid temp, the high-temperature water resistor fluid is by the circulating water pump (6) in the resistor fluid cooling recirculation system, the high-temperature water resistor fluid is evacuated in the heat exchanger (7) carries out returning water resistance tank after the cold and hot exchange, guarantee that the water resistance starting speed governing normally moves.
Claims (1)
- A kind of cage asynchronous motor water resistance starting speed regulating device, operation interface in the water resistance speed-adjusting and control system (4), plc (3), servo actuator (5), water resistance (2) order are electrically connected, it is characterized in that: the water resistance in the water resistance speed-adjusting and control system (2) is serially connected with in cage asynchronous motor (1) the B portion stator loop, carries out speed regulating control by plc (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076249 CN2717103Y (en) | 2004-08-09 | 2004-08-09 | Water resistance starting speed regulation device for wound cage type asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076249 CN2717103Y (en) | 2004-08-09 | 2004-08-09 | Water resistance starting speed regulation device for wound cage type asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2717103Y true CN2717103Y (en) | 2005-08-10 |
Family
ID=34874391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420076249 Expired - Fee Related CN2717103Y (en) | 2004-08-09 | 2004-08-09 | Water resistance starting speed regulation device for wound cage type asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2717103Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368494A (en) * | 2012-03-30 | 2013-10-23 | 广州市龙自安电气有限公司 | A rotor frequency conversion redundancy speed adjusting device |
| CN105897066A (en) * | 2014-12-22 | 2016-08-24 | 李伏书 | New technology enabling high-voltage variable-frequency system to drag cement production line high-temperature fan to continuously operate |
| CN109507582A (en) * | 2018-10-10 | 2019-03-22 | 大禹电气科技股份有限公司 | Water resistance load regulating device |
-
2004
- 2004-08-09 CN CN 200420076249 patent/CN2717103Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368494A (en) * | 2012-03-30 | 2013-10-23 | 广州市龙自安电气有限公司 | A rotor frequency conversion redundancy speed adjusting device |
| CN103368494B (en) * | 2012-03-30 | 2017-11-14 | 广州市龙自安电气有限公司 | Rotor-side variable frequency redundancy arrangements for speed regulation |
| CN105897066A (en) * | 2014-12-22 | 2016-08-24 | 李伏书 | New technology enabling high-voltage variable-frequency system to drag cement production line high-temperature fan to continuously operate |
| CN109507582A (en) * | 2018-10-10 | 2019-03-22 | 大禹电气科技股份有限公司 | Water resistance load regulating device |
| CN109507582B (en) * | 2018-10-10 | 2021-08-10 | 大禹电气科技股份有限公司 | Water resistance load adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050810 Termination date: 20100809 |