CN2185917Y - Liquid rheostat - Google Patents
Liquid rheostat Download PDFInfo
- Publication number
- CN2185917Y CN2185917Y CN 93247195 CN93247195U CN2185917Y CN 2185917 Y CN2185917 Y CN 2185917Y CN 93247195 CN93247195 CN 93247195 CN 93247195 U CN93247195 U CN 93247195U CN 2185917 Y CN2185917 Y CN 2185917Y
- Authority
- CN
- China
- Prior art keywords
- water tank
- liquid
- cabinet
- insulation water
- moving electrode
- 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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- Adjustable Resistors (AREA)
Abstract
The utility model relates to an adjustable liquid resistor, which is used for the starting of large-sized or middle-sized motors, and is composed of a cabinet body, an insulating water tank, an operating motor, a transmission screw rod, a transmission nut, a fixed electrode, a movable electrode, an operation indicating unit, a control unit, a cutting mechanism, etc., wherein, the transmission screw rod of the utility model is horizontally arranged; the movable electrode moves horizontally; the insulating water tank is composed of three equal grids; conductive liquid is arranged in the three equal grids, and is communicated by liquid fleeing holes; three pairs of the fixed and the movable electrodes are respectively arranged in the three grids. The utility model has the advantages of simple structure, compact structure, low cost, easy operation, and easy maintenance.
Description
The utility model relates to a kind of adjustable liquid rheostat, is used for the starting of large and medium-sized motor.It is made up of cabinet, insulation water tank, conducting liquid, fixed electrode, moving electrode, operating electrical machines, drive lead screw, transmission nut, excision mechanism, control unit, operation indicating member etc.
" cement technology " fourth phase in 1988 has been introduced a kind of liquid rheostat, the Decree of Patent Office of China a kind of electric liquid starting rheostat (89220361).These two kinds of liquid rheostats all adopt operating electrical machines to drive elevating mechanism by transmission mechanism and move up and down, the moving electrode that connects is with it moved up and down with it, thereby the moving electrode that is immersed in the insulation water tank liquid and the distance between fixed electrode are changed, and then corresponding variation takes place to interelectrode liquid resistance value and reaches and become the resistance purpose in each.The subject matter that these two kinds of liquid rheostats exist is:
1, elevating mechanism drive moving electrode moves up and down, and the interior space of cabinet can not effectively be utilized, and causes the cabinet volume excessive, the product cost height, and floor space is many.
2, the conducting liquid in the insulation water tank does not have accurate and visual indication, adds in debugging and use and changes the conducting liquid inconvenience.
The purpose of this utility model just provides a kind of compact conformation, can effectively utilize space in the cabinet, volume is little, take up an area of less, the liquid rheostat of dependable performance, convenient operating maintenance.
In order to achieve the above object, the utility model adopts following technical measures:
1, drive lead screw 37 is by bearing pedestal 15,25 supportings, horizontal insulation water tank 2 tops that are installed on, replaced vertical screw mandrel or the driving-chain that is positioned on the water tank in the former technology, be used for installing excision mechanism 9, control unit 10 and operation indicating member 11 thereby vacate cabinet 1 upper space.Cabinet 1 interior space is utilized effectively.
2, insulation water tank 2 is made three impartial lattice, and liquid is by scurrying liquid hole 12 UNICOMs in three lattice.Add during use that to change liquid more convenient.
3, the insulation water tank 2 positive liquid indicator tubes 13 of installing are as the liquid indication, directly perceived, convenient.
4, fixed electrode 5 vertical fixing are in insulation water tank 2 rear sides, and its lead-out wire links with excision mechanism 9 and is fixed on the insulation board 23 that connects with cabinet 1; Moving electrode 6 vertical hangings are in slide 19 times, and place three lattice of insulation water tank 2 respectively, and are simple in structure, save cost.
5, transmission nut 30 and 31 of the transmission pedestals that is enclosed within on the drive lead screw 37 has lead 29 and spring 28, is used for circumferentially spacing and cushions the inertia of whole driving-chain.
6, two pulley bases 24,26 are arranged on the slip support 19, pulley base 24,26 is equipped with pulley 18,21,27,32 respectively, and pulley 18,21,27,32 places on the guide rail 17,33.This simple in structure, motion is steadily reliable.
7, there are 4, six sealing joint strips 41 of water tank cover plate to be fixed on the plate body 40 of cover plate 4 by press strip 43, screw 42 respectively on the little case 2 of insulation, form three bands.Gusset 39 on the moving electrode 6 can be free to slide in three bands.
Fig. 1 is the front view of liquid rheostat
Fig. 2 is the left view of liquid rheostat
Fig. 3 is the vertical view of liquid rheostat
Fig. 4 is insulation water tank cover plate sealed structure chart
Below in conjunction with accompanying drawing principle of the present utility model and structure are described further:
Principle:
Operation principle of the present utility model is, learns according to the law of resistance, and the resistance between pole plate is directly proportional with distance between pole plate.Three pairs of pole plates are sealed in respectively by in the stator loop of starting motor or the rotor loop, change the size of resistance value by the distance that changes fixed electrode 5 and moving electrode 6, thereby reach the purpose of starting motor.Be in maximum distance position by moving electrode 6 before the actuating motor energising.By actuating motor energising back starting beginning, operating electrical machines 34 rotates, moving electrode 6 to fixed electrode 5 gradually near until contact.Resistance is from large to small until being zero.Electrode contact back contact block 20 makes limit switch 22 actions, control unit 10 makes excision mechanism 9 with the resistance excision, makes operating electrical machines 34 counter-rotatings simultaneously, and moving electrode 6 increases gradually with the distance of fixed electrode 5, make limit switch 16 action and stop until contact block 20, for getting ready next time.
Structure:
Insulation water tank 2 is placed in cabinet 1 bottom, and insulation water tank 2 is become by three lattices of equalization, by scurrying liquid hole 12 UNICOMs.Three pairs of electrodes 5,6 place each lattice respectively, and fixed electrode 5 is installed on insulation water tank 2 rear walls, and lead-out wire is connected with excision mechanism 9 and by actuating motor by bus-bar 8.Moving electrode 6 is installed on insulation board 7 times.Insulation board 7 is fixed in the slide 19, is fixed with pulley base 24,26 on the slide 19, and four pulleys 18,21,27,32 that are loaded on the pulley base 24,26 place guide rail 17,33 respectively.Slide 19 is connected with transmission pedestal 31.The seesawing of moving electrode 6 that hangs under the slide 19 is that operating electrical machines 34 drives drive lead screw 37 and rotates by small pulley 35, belt 36, big belt wheel 38, and transmission nut 30, transmission pedestal 31 moving linearlies are realized.When moving electrode 6 contacted with fixed electrode 5, the inertia of transmission device was cushioned by the spring 28 that is loaded on 31 of transmission nut 30 and transmission pedestals.Cabinet 1 rear side is equipped with limit switch 22, when moving electrode 6 is loaded on during with fixed electrode 5 contact on the slide 19 and makes limit switch 22 actions and send the signal of telecommunication with the contact block 20 of moving electrode 6 motions.Limit switch 16 is equipped with in the front side of cabinet 1, when contact block 20 with its shake-up, limit switch 16 can send signal, at this moment, the distance between moving electrode 6 and the fixed electrode 5 is maximum.
The utility model compared with prior art has following advantage:
1, drive lead screw 37 sleeping insulation water tank 2 tops that are loaded on, moving electrode 6 moves horizontally, and makes compact conformation. To operate indicating member 11, control module 10, excision mechanism 9 is loaded on drive lead screw 37 tops. Cabinet 1 interior space is utilized effectively. The complete machine manufacturing cost reduces greatly.
2, be divided into the insulation water tank 2 of three lattice, simple in structure, be easy to make; Have between three lattice and alter liquid hole 12 conducting liquid 3 in three lattice is communicated with, add in the working service process that to change liquid more convenient.
3, cover plate 4 is equipped with at insulation water tank 2 tops, and three bands that moving electrode 6 is slided are freely arranged on the cover plate 4. Cover plate 4 can seal water tank 2. Reduce conducting liquid 3 because of the corrosion of evaporation to cabinet 1 interior electric components, hardware.
4, liquid level indicator tube 13 is equipped with in insulation water tank 2 fronts, and liquid indicator tube 13 is communicated with insulation water tank 2 by elbow 14, is convenient to observe liquid level when preparation conducting liquid 3 and in the use procedure.
Claims (4)
1, a kind of new liquid rheostat that is used for large and medium-sized motor starting, it comprises cabinet (1), insulation water tank (2), conducting liquid (3), fixed electrode (5), moving electrode (6), drive lead screw (37), transmission nut (30), control unit (10), operation indicating member (11), excision mechanism (9) etc.; It is characterized in that: motor (34) links with the horizontal drive lead screw (37) that is installed on insulation water tank (2) top by small pulley (35), big belt wheel (38), belt (36); The transmission nut (30) that is enclosed within on the drive lead screw (37) links by transmission pedestal (31) and slide (19); Three-phase moving electrode (6) is suspended under the slide (19) and places in the insulation water tank (2); Connect by lead (29) between transmission nut (30) and transmission pedestal (31), be set with buffer spring (26) on the lead (29); Then be fixedly connected with pulley (18), (21), (27), (32) that four energy slide along guide rail (17), (33) on the slide (19); Operation indicating member (11), control unit (10), excision mechanism (9) are loaded on cabinet (1) top; Insulation water tank (2) is loaded on cabinet (1) bottom; Drive lead screw (37) places cabinet (1) middle part; It is interior and corresponding with three-phase moving electrode (6) that three-phase fixed electrode (5) is installed in insulation water tank (2).
2, new liquid rheostat as claimed in claim 1, the water tank (2) that it is characterized in that insulating is made into by scurrying equalization three lattice that liquid hole (12) is communicated with; Three pairs of fixed electrodes (5), moving electrode (6) place each lattice respectively.
3, new liquid rheostat as claimed in claim 1, liquid level indicator tube (13) is equipped with in water tank (2) front that it is characterized in that insulating.
4, new liquid rheostat as claimed in claim 1, the water tank (2) that it is characterized in that insulating is equipped with seal cover board (4), and three bands that are made of sealing joint strip (41) are arranged on the cover plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247195 CN2185917Y (en) | 1993-11-30 | 1993-11-30 | Liquid rheostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247195 CN2185917Y (en) | 1993-11-30 | 1993-11-30 | Liquid rheostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2185917Y true CN2185917Y (en) | 1994-12-21 |
Family
ID=33819651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93247195 Expired - Fee Related CN2185917Y (en) | 1993-11-30 | 1993-11-30 | Liquid rheostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2185917Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270036A (en) * | 2014-09-29 | 2015-01-07 | 安吉县天宝电控设备有限公司 | Resistance changing structure for electro-hydraulic starter rheostat |
| CN107068314A (en) * | 2015-02-28 | 2017-08-18 | 朱海燕 | Available for electronics or the electromagnetic drive rotating fluid of power system from variohm |
-
1993
- 1993-11-30 CN CN 93247195 patent/CN2185917Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270036A (en) * | 2014-09-29 | 2015-01-07 | 安吉县天宝电控设备有限公司 | Resistance changing structure for electro-hydraulic starter rheostat |
| CN104270036B (en) * | 2014-09-29 | 2016-08-17 | 安吉县天宝电控设备有限公司 | A kind of variable resistance structure of electro-hydraulic starting rheostat |
| CN107068314A (en) * | 2015-02-28 | 2017-08-18 | 朱海燕 | Available for electronics or the electromagnetic drive rotating fluid of power system from variohm |
| CN107068314B (en) * | 2015-02-28 | 2019-10-29 | 朱海燕 | It can be used for the electromagnetic drive rotating fluid of electronics or electric system from variohm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Huang Jinhua Document name: payment instructions |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Huang Jinhua Document name: Notice of termination |
|
| 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 |