CN202143019U - Water resistance starting and speed regulating device for liquid-level-adjustable wound rotor type motor - Google Patents
Water resistance starting and speed regulating device for liquid-level-adjustable wound rotor type motor Download PDFInfo
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- CN202143019U CN202143019U CN201120073804U CN201120073804U CN202143019U CN 202143019 U CN202143019 U CN 202143019U CN 201120073804 U CN201120073804 U CN 201120073804U CN 201120073804 U CN201120073804 U CN 201120073804U CN 202143019 U CN202143019 U CN 202143019U
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- speed regulating
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Abstract
The utility model belongs to the technical field of starting and speed regulating of a motor, in particular to a water resistance starting and speed regulating device for a liquid-level-adjustable wound rotor type motor, which is applicable to starting and speed regulating of high-power wound rotor type motors. The water resistance starting and speed regulating device is characterized in that the device adopts a form of an upper water tank and a lower water tank, electrode plates are driven to move back and forth by a driving lead screw to change distance between a dynamic electrode plate and a static electrode plate so as to change water resistance value. Simultaneously, by means of alternating work of a dry water pump and a water discharging electromagnetic valve, a resistor contact face of the dynamic electrode plate and the static electrode plate is changed by controlling the height of the liquid level inside the upper water tank so as to change resistance value of liquid resistance and obtain the purpose of speed regulating and operating of the wound rotor type motor. The water resistance starting and speed regulating device has the advantages that by means of a simple driving mechanism, stepless adjustment of a wide resistance section of water resistance is effectively controlled, starting and speed regulating operation of the wound rotor type motor is met, a problem that an adjusting range of resistance value is narrow before when water resistor liquid temperature rises is resolved, and the wound rotor type motor is enabled to have a higher and wider speed regulating range in a long-term operation state.
Description
Technical field
The utility model belongs to motor starting speed adjusting technique field, is specifically related to the adjustable liquid level type of a kind of wound-rotor motor water resistance starting speed regulating device, is applicable to the starting and the speed governing operation of large power winding formula motor.
Background technology
Large power winding formula motor has obtained using widely in industries such as metallurgy, building materials because its intrinsic characteristic utilizes its rotor loop series resistance to realize the starting and the speed governing operation of motor.At present; The speed governing operation of large power winding formula motor; Mainly the form with string water resistance in the rotor loop of wound-rotor motor realizes; The heat radiation of water resistance speed governing cabinet mainly contains two kinds of patterns: a kind of is the air blast cooling radiating mode, and the water power blocking solution that is about to high temperature is through fan and evaporator circulation cooling; Another kind is board-like heat exchange water-cooled radiating mode.Motor is after starting is accomplished, and its rotor loop is gone here and there the water resistance operation for a long time, the heat that the power that water resistance consumed produces; Utilize the mode of circulation that heat is taken away, but no matter be any heat radiation form, the negative temperature characteristic that the mountain has in water resistance; Its resistance will reduce after the water resistance temperature raises, even water resistance pole plate distance is transferred to maximum, crosstalk resistance in motor rotor loop is still too small; The speed adjustable range of wound-rotor motor is narrow, is generally the 70%-94% of rated speed.At present, need seek a kind of water resistance speed regulating device of simple, wound-rotor motor that speed adjustable range is wideer, to satisfy the needs of the on-the-spot various service conditions of user.
Summary of the invention
The purpose of the utility model is exactly to be directed against water resistance speed regulating device in the past; When adjusting liquid resistance resistance and carry out speed governing operation through the mode of single change polar plate spacing; Polar plate spacing changes weak points such as limited, that the change in resistance scope is too small, the device speed adjustable range is narrow in the resistance of existing water resistance temperature influence and liquid, but and a kind of simple, wound-rotor motor machine liquid level variable type speed regulating device that speed adjustable range is wideer is provided.
The technical solution of the utility model is: a kind of adjustable liquid level type wound-rotor motor speed regulating device comprise upper and lower water tank, dynamic and static pole plate, pole plate drive motor and drive lead screw, the electromagnetically operated valve that discharges water, moisturizing electromagnetically operated valve, dry type water pump, liquid level gauge etc.; During the device operation, the pole plate dragging motor drives movable plate electrode through drive lead screw and seesaws, and changes the distance between the sound pole plate; Promptly change the water resistance resistance; When the water resistance resistance was still less than normal when the sound pole plate has operated in maximum distance, device opened or closed the electromagnetically operated valve that discharges water through controller, and the liquid level of regulating upper water box reduces gradually; The sound pole plate is littler through the contact-making surface of water resistance, so liquid resistance resistance can significantly strengthen.Its principal character is: device adopts the lower header form that goes up; Utilize the alternation of the dry type water pump and the electromagnetically operated valve that discharges water; Height through the inner liquid level of control upper water box changes the resistance contact-making surface of sound pole plate, and then changes liquid resistance resistance, reaches the purpose that makes the wound-rotor motor speed governing operation.
Water tank described in the utility model technical solution is divided into two parts up and down; Separate by dividing plate; Upper water box is semi-enclosed water tank; Be connected through electromagnetically operated valve and water pipe with lower header at low liquid level place, connect filling pipe also parallelly connected a filling pipe and upper water box overflow pipe of lower header by solenoid control; Last lower header is outside to be connected with water pipe through a dry type self-priming water pump, can water in the lower header be extracted in the upper water box; Discharge water or the self-priming water pump alternation of drawing water through electromagnetically operated valve, the liquid level in the upper water box is changed in a predetermined scope.Filling pipe is on lower header top, and near dividing plate, low-water level switch is contained in the lower header, control moisturizing electromagnetically operated valve automatic water supplement when detecting the liquid level deficiency.Upper water box is established high liquid level and low liquid-level switch; The liquid level of upper water box when control is drawn water or discharged water, when liquid level was too high, the overflow pipe resistor fluid that upper water box is too high drained into lower header; Because the position limit of its intake is so keep most resistor fluid all the time in the upper water box.
The beneficial effect of the utility model is: adopt simple transmission mechanism; Drive the drive lead screw running through the pole plate drive motor; Thereby movable plate electrode moves back and forth in the control upper water box, promptly effectively controls the electrodeless adjusting of water resistance low resistance section, satisfies the starting and the speed governing operation of wound-rotor motor.Utilize the water pump and the mode of the electromagnetically operated valve alternation that discharges water to regulate the inner liquid level of upper water box simultaneously, change the resistance contact-making surface of sound pole plate, can realize the electrodeless adjusting of the big resistance section of water resistance.This device has adopted the version of the adjustable liquid level of lower header on the basis of existing conventional screw mandrel drive speed-adjusting cabinet; Utilize these the two kinds forms that change resistance that the resistance of water resistance is regulated in a big way; Solved the narrow problem of water power blocking solution temperature rise resistance adjustable range in the past, made wound-rotor motor that higher wide speed adjustable range arranged under the long-time running state.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, pole plate dragging motor; 2, movable plate electrode; 3, lead screw transmission mechanism; 4, static plate electrode; 5, dry type self-priming water pump; 6, upper water box; 7, lower header; 8, low-water level switch; 9, filling pipe; 10, the electromagnetically operated valve that discharges water; 11, moisturizing electromagnetically operated valve; 12, liquid level dividing plate.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As shown in Figure 1, resistor fluid is added to the top of upper water box (6) liquid level dividing plate (12), lower header adds the half the approximately volume place of resistor fluid to lower header (7).During wound-rotor motor work; Its rotor loop three phase windings connect speed regulating device three-phase static plate electrode (4); Pole plate dragging motor (1) drives movable plate electrode (2) to the direction of static plate electrode (4) (among the figure to the right) motion through drive lead screw (3), and when movable plate electrode (2) moved near static plate electrode (4), the speed regulating device controller sent the instruction of contactor short circuit; With main rotor winding three-phase short circuit, this moment, the wound-rotor motor starting was accomplished.When wound-rotor motor need switch to the speed governing operation state; Pole plate dragging motor (1) drives movable plate electrode (2) to away from the direction of static plate electrode (4) (among the figure left) motion through drive lead screw (3); Regulate the rotating speed of wound-rotor motor through the spacing that changes movable plate electrode (2) and static plate electrode (4), when movable plate electrode (2) moves to apart from static plate electrode (4) maximum distance (high order end among the figure), when the rotating speed of wound-rotor motor is still higher; Open the electromagnetically operated valve that discharges water (10); The liquid level of upper water box (6) descends gradually, and the water resistance resistance increases thereupon, and the wound-rotor motor rotating speed is descended.The upper water box set inside liquid level dividing plate (12); When liquid level was positioned at liquid level dividing plate (12) high water level place, dry type self-priming water pump (5) stopped pumping, when liquid level is positioned at dividing plate (12) high water level place; The electromagnetically operated valve (10) that discharges water stops to discharge water; Locate when lower header (7) liquid level drops to low-water level switch (8), and upper water box (6) liquid level starts moisturizing electromagnetically operated valve (11) to lower header (7) automatic water supplement when being less than the high liquid level of liquid level dividing plate (12).
Claims (1)
1. the adjustable liquid level type of wound-rotor motor water resistance starting speed regulating device comprise upper water box, lower header, movable plate electrode, static plate electrode, pole plate drive motor and drive lead screw, filling pipe, the electromagnetically operated valve that discharges water, moisturizing electromagnetically operated valve, dry type water pump; Wherein an end of upper water box is provided with filling pipe, is separately installed with discharge water electromagnetically operated valve and moisturizing electromagnetically operated valve on the filling pipe, and the other end links to each other with lower header through the dry type water pump; Lower header is positioned at the upper water box bottom, separates through dividing plate with upper water box, links to each other with the dry type water pump with filling pipe simultaneously; Pole plate drive motor and drive lead screw are positioned at the top of upper water box, and static plate electrode that links to each other with drive lead screw and movable plate electrode place upper water box respectively; The principal character of this device is: device adopts the lower header form that goes up, and drives the drive lead screw running through the pole plate drive motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120073804U CN202143019U (en) | 2011-03-21 | 2011-03-21 | Water resistance starting and speed regulating device for liquid-level-adjustable wound rotor type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120073804U CN202143019U (en) | 2011-03-21 | 2011-03-21 | Water resistance starting and speed regulating device for liquid-level-adjustable wound rotor type motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202143019U true CN202143019U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120073804U Expired - Fee Related CN202143019U (en) | 2011-03-21 | 2011-03-21 | Water resistance starting and speed regulating device for liquid-level-adjustable wound rotor type motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202143019U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270038A (en) * | 2014-09-29 | 2015-01-07 | 安吉县天宝电控设备有限公司 | Rheostat structure based on electro-hydraulic starter rheostat |
| CN106441951A (en) * | 2016-08-26 | 2017-02-22 | 山东华车能源科技有限公司 | Mobile circulating water locomotive water resistance test bed and application method thereof |
| CN107967972A (en) * | 2017-12-06 | 2018-04-27 | 杨晨光 | Motional resistance device and its application |
| CN111257587A (en) * | 2020-01-22 | 2020-06-09 | 武汉船用机械有限责任公司 | Rotating speed measuring device for double-speed motor |
-
2011
- 2011-03-21 CN CN201120073804U patent/CN202143019U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270038A (en) * | 2014-09-29 | 2015-01-07 | 安吉县天宝电控设备有限公司 | Rheostat structure based on electro-hydraulic starter rheostat |
| CN104270038B (en) * | 2014-09-29 | 2017-06-16 | 安吉县天宝电控设备有限公司 | Variable resistance structure based on electro-hydraulic starting rheostat |
| CN106441951A (en) * | 2016-08-26 | 2017-02-22 | 山东华车能源科技有限公司 | Mobile circulating water locomotive water resistance test bed and application method thereof |
| CN107967972A (en) * | 2017-12-06 | 2018-04-27 | 杨晨光 | Motional resistance device and its application |
| CN111257587A (en) * | 2020-01-22 | 2020-06-09 | 武汉船用机械有限责任公司 | Rotating speed measuring device for double-speed motor |
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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: 20120208 Termination date: 20140321 |