CN2316769Y - Liquid resistance starting slip speed-regulating controller - Google Patents
Liquid resistance starting slip speed-regulating controller Download PDFInfo
- Publication number
- CN2316769Y CN2316769Y CN 97241403 CN97241403U CN2316769Y CN 2316769 Y CN2316769 Y CN 2316769Y CN 97241403 CN97241403 CN 97241403 CN 97241403 U CN97241403 U CN 97241403U CN 2316769 Y CN2316769 Y CN 2316769Y
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- liquid
- starter
- utility
- resistance
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Abstract
The utility model belongs to a liquid resistance starting slip speed regulating controller. The utility model mainly solves the problem that when the existing electrohydraulic starter needs to slip and regulate the speed, an external connecting fixed metal resistance is needed. The utility model is characterized in that a programmable PLC controller is composed of a programmable controller, an over current detector, a liquid level detecting circuit, and an acoustic-optic alarm circuit; a liquid resistance box of the electrohydraulic starter is additionally provided with a fixing polar plate, and the upper part is provided with a liquid storage transit box; an electrohydraulic circulating pipe is arranged between the liquid storage transit box and the electrohydraulic starter. The utility model has the functions of liquid resistance start and slip speed regulation. The utility model is especially suitable for the start and the slip speed regulation of large size and medium size wound type asynchronous motors.
Description
The utility model relates to a kind of liquid resistance starter, the energy-conservation starting and the slip regulating speed of big-and-middle-sized wire wound asynchronous motor under particularly a kind of suitable fully loaded transportation condition are to improve the liquid resistance starting and the speed control device of the economical operation ability of motor in starting and the running.
Existing electric liquid starter only as the starting equipment of motor, in use, if need slip regulating speed, also need use traditional fixed metallic resistance.Its weak point is, metallic resistance dispels the heat difficult under high-power state, and volume is big, cost is high, failure rate is high, is step speed regulation, thereby cause the speed governing response speed slow, and lack of homogeneity makes under impact load shock situation, often because of the liquid resistance is excessive can not be to the timely resistance of surge current, cause the higher level protect the tripping operation or burn out corresponding electromechanical equipment, influence ordinary production; In addition, also make the superiority of the liquid resistance of electric liquid starter fail to give full play to.
The purpose of this utility model is exactly to provide a kind of employing liquid resistance to make slip regulating speed at above-mentioned weak point, the energy-conservation starting and the slip regulating speed that are suitable for big-and-middle-sized wire wound asynchronous motor are to improve the liquid resistance starting slip regulating speed control device of its economical operation ability.
Technical solution of the present utility model is: a kind of liquid resistance starting slip regulating speed control device comprises the programmable PLC control device of being made up of Programmable Logic Controller, over-current detector, liquid level detection circuit, sound light alarming circuit.Electricity liquid starter.It is characterized in that: fixed plate is other in three liquid resistance box of electric liquid starter sets up a fixed plate, forms three fixer resistances.Above electric liquid starter, be provided with a liquid storage transferring box, be provided with electric liquid circulation line between this liquid storage transferring box and the electric liquid starter.
What can adopt on the electric liquid circulation line described in the utility model technical solution is heat exchange fins.
The utility model then should be decided plate plate and original fixed resistance of fixed plate formation owing to set up a fixed plate in liquid resistance box, and so, the fixed resistance of three liquid resistance box and variable resistor constitute electric liquid rheostat.Owing to be provided with the liquid storage transferring box, with and and electric liquid starter between electric liquid circulation line, thereby, can guarantee to descend in working order the electrohydraulic box liquid level constant all the time, and can prevent effectively that the liquid temperature is too high.Owing on electric liquid circulation line, be provided with heat exchange fins, can force cooling to electric liquid, cost is low, and is effective.Compared with prior art, the utlity model has the dual-use function of liquid resistance starting and slip regulating speed, solved the electric liquid heating, the speed governing low-response that bring in the slip regulating speed process, problem such as evaporate, reach practical reliable, be quick on the draw, the energy-conservation starting and the slip regulating speed that are specially adapted to big-and-middle-sized wire wound asynchronous motor improve response speed and economical operation ability thereof.
The drawing of accompanying drawing is described as follows:
Fig. 1 is but circulation process figure of electric liquid cooling of the present utility model;
Fig. 2 is that the utility model electricity liquid becomes resistance part separation structure schematic diagram;
The utility model is described in further detail below in conjunction with accompanying drawing: as shown in Figure 1 and Figure 2, electric liquid becomes the resistance part and divides and be provided with three uniform liquid resistance box 12 in 1, is submerged in the electrohydraulic box 31 in the cabinet 21.29,30 and one groups of movable plate electrodes 11 of two groups of fixed plates be arranged in parallel, and often connect fixed resistance and variable resistor with the electric liquid 20 common three-phases of forming.Movable plate electrode linking arm 28, transmission component 27, driving belt 26, driving motor 25, fixed support 24 formed and become resistance and drive operating parts, identical with in the existing electric liquid starter.Liquid storage transferring box 10 is arranged on electric liquid change resistance part and divides 1 top, electricity liquid is drawn from the liquid outlet 32 of electrohydraulic box 31, through break valve 2,4,6, filter 3, infusion pump 5, enter heat exchanger 7, after cooling off, send into liquid storage transferring box 10 from outlet through unidirectional valve 13, feed liquor pipeline 15, the feed liquor mouth of pipe 18, in circulating pump work, electric liquid in the liquid storage transferring box 10 flows out in liquid back pipe mouth 19, liquid back pipe 23 automatically by atmospheric pressure, flows in the electrohydraulic box 31 through inlet 22, guarantees the normal liquid level of electrohydraulic box 31.For guaranteeing the safety of circulation line, also be provided with detected pressures table 9 and tapping valve 14, used with monitoring cooling system pressure and maintenance tapping.Heat exchanger 7 adopts air blast Final 8 refrigeration but, can the conserve water resource, guarantee safety.Be provided with the programmable PLC control device of forming by Programmable Logic Controller, over-current detector, liquid level detection circuit, sound light alarming circuit in the control cubicle 16, comprising liquid temperature, liquid level detector 33, become the resistance part through connecting line 17 and electric liquid and divide 1, connections such as the circulatory system 7,8,5,9, be electrically connected with control circuit be known prior art, no longer the statement.Often connect fixed resistance and variable resistor by what fixed plate 29,30 and movable plate electrode 11 were formed, and the control command that can send according to the various load signals that detected in the programmable PLC control device of main contactor, at any time or in advance drop into or excise the liquid resistance resistance in the main rotor loop, formation can respond or the even controlled machine operation process of speed governing in advance.Employing can often connect the mode that fixed resistance and variable resistor are combined into one, and has promptly satisfied the transient response requirement of impact load to the Wound-rotor type electromechanical shock, can guarantee certain stepless speed control scope again.Thereby realize starting of industry electrical machine energy-saving and slip regulating speeds such as metallurgy, mine, chemical industry, water supply.
Claims (2)
1, a kind of liquid resistance starting slip regulating speed control device comprises the programmable PLC control device of being made up of Programmable Logic Controller, over-current detector, liquid level detection circuit, sound light alarming circuit; Electricity liquid starter is characterized in that: fixed plate (29) is other in three liquid resistance box (12) of electric liquid starter sets up a fixed plate (30), forms three fixer resistances; Above electric liquid starter, be provided with a liquid storage transferring box (10), be provided with electric liquid circulation line (15,23) between this liquid storage transferring box (10) and the electric liquid starter.
2, liquid resistance starting slip regulating speed control device according to claim 1, it is characterized in that: what described electric liquid circulation line (15) was gone up employing is heat exchange fins (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97241403 CN2316769Y (en) | 1997-10-17 | 1997-10-17 | Liquid resistance starting slip speed-regulating controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97241403 CN2316769Y (en) | 1997-10-17 | 1997-10-17 | Liquid resistance starting slip speed-regulating controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2316769Y true CN2316769Y (en) | 1999-04-28 |
Family
ID=33950883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97241403 Expired - Fee Related CN2316769Y (en) | 1997-10-17 | 1997-10-17 | Liquid resistance starting slip speed-regulating controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2316769Y (en) |
-
1997
- 1997-10-17 CN CN 97241403 patent/CN2316769Y/en not_active Expired - Fee Related
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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 |