CN204349840U - Liquid resistance starting cabinet resistance automatic preparing device and the starting cabinet with this device - Google Patents
Liquid resistance starting cabinet resistance automatic preparing device and the starting cabinet with this device Download PDFInfo
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- CN204349840U CN204349840U CN201520047702.5U CN201520047702U CN204349840U CN 204349840 U CN204349840 U CN 204349840U CN 201520047702 U CN201520047702 U CN 201520047702U CN 204349840 U CN204349840 U CN 204349840U
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- starting cabinet
- resistance
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Abstract
A kind of liquid resistance starting cabinet resistance automatic preparing device and the starting cabinet with this device, liquid resistance starting cabinet resistance automatic preparing device comprises the touch-screen for receiving extraneous input information, for gathering the Acquisition Circuit of the signal of telecommunication in the motor stator sub-loop of liquid resistance place to be detected, the central control unit PLC of instruction is sent after carrying out computing for external world's input information of receiving according to touch-screen and the signal of telecommunication of Acquisition Circuit collection, for sending the switching circuit of instruction unpack/closedown electrolytic powder passage according to central control unit PLC, for detecting electrolytic powder flow and feeding back to the flowmeter of central control unit PLC, for sending the motor that instruction moves up and down to drive movable plate electrode according to central control unit PLC.The utility model raises the efficiency saving, cost, structure simply, and easy to operate, automaticity is high.
Description
Technical field
The utility model is the application in the industry of a kind of automated system.
Background technology
Liquid resistance starter, also known as " liquid rheostat " (being commonly called as " water resistance "), is the starting performance for improving big-and-middle-sized alternating current motor and the new starter developed.The general principle of liquid resistance starter is the special fluid resistance having sealed in dividing potential drop and metering function in motor stator sub-loop, in starting process, by mechanical driving device, the distance of two parallel plate electrodes in conducting liquid is reduced gradually, liquid resistance resistance realizes descending stepless change within the predetermined time automatically, until when being close to zero, liquid resistance excision automatically, motor puts into operation.By making the resistance value sealed in motor stator loop smoothly reduce, thus realize the heavily loaded smooth starting of large and medium asynchronous motor.Which overcome that inrush current is large, the problem such as hard-to-start and operation inconvenience.Because it has good starting effect, and there is higher cost performance, be commonly used.
The preparation of liquid resistance cabinet resistance becomes the key of starting, it requires higher to technical staff's technical merit, veteran engineer after sale rule of thumb can differentiate the number adding electrolytic powder, and the electrician lacked experience is difficult to differentiate the number adding electrolytic powder, need special personnel after sale to field adjustable, considerably increase the operation cost of enterprise.
Summary of the invention
The purpose of this utility model is to provide a kind of liquid resistance starting cabinet resistance automatic preparing device, and it is raised the efficiency, cost-saving, resistance preparation is accurate.Another object of the present utility model is to provide a kind of starting cabinet, and structure is simple, and easy to operate, automaticity is high.
The technical solution of the utility model is: a kind of liquid resistance starting cabinet resistance automatic preparing device, comprise the touch-screen for receiving extraneous input information, for gathering the Acquisition Circuit of the signal of telecommunication in the motor stator sub-loop of liquid resistance place to be detected, the central control unit PLC of instruction is sent after carrying out computing for external world's input information of receiving according to touch-screen and the signal of telecommunication of Acquisition Circuit collection, for sending the switching circuit of instruction unpack/closedown electrolytic powder passage according to central control unit PLC, for detecting electrolytic powder flow and feeding back to the flowmeter of central control unit PLC, for sending the motor that instruction moves up and down to drive movable plate electrode according to central control unit PLC, the electromagnetically operated valve that described switching circuit comprises contactor one, is connected with contactor one, motor is connected with central control unit PLC through contactor two.
One output of described central control unit PLC is connected with an input of touch-screen.
Described Acquisition Circuit comprises current transformer, current transducer, voltage transmitter.
A kind of starting cabinet, comprises outer water tank, more than one inner water tank be loaded in outer water tank, and static plate electrode is fixed on inner water tank inner bottom part, and movable plate electrode is connected with motor through transmission mechanism, and the funnel for splendid attire electrolytic powder is loaded on inner water tank top, also comprise liquid resistance starting cabinet resistance automatic preparing device, described liquid resistance starting cabinet resistance automatic preparing device comprises the touch-screen for receiving extraneous input information, for gathering the Acquisition Circuit of the signal of telecommunication in the motor stator sub-loop of liquid resistance place to be detected, the central control unit PLC of instruction is sent after carrying out computing for external world's input information of receiving according to touch-screen and the signal of telecommunication of Acquisition Circuit collection, for sending the switching circuit of instruction unpack/closedown electrolytic powder passage according to central control unit PLC, for detecting electrolytic powder flow and feeding back to the flowmeter of central control unit PLC, for sending the motor that instruction moves up and down to drive movable plate electrode according to central control unit PLC, the electromagnetically operated valve that described switching circuit comprises contactor one, is connected with contactor one, motor is connected with central control unit PLC through contactor two, described flowmeter, electromagnetically operated valve are loaded on funnel bottom.
Described transmission mechanism comprises screw mandrel, the screw be set on screw mandrel, support, and screw mandrel is connected with motor-driven through belt, and screw mandrel lower end warp beam takes up on support, and screw is connected with movable plate electrode through pole.
One output of described central control unit PLC is connected with an input of touch-screen.
Described Acquisition Circuit comprises current transformer, current transducer, voltage transmitter.
The utility model is mainly to realize liquid resistance starting cabinet resistance automatic preparation.Device converts the analog signals of people to digital quantity signal by touch-screen and is transferred to central control unit PLC, the voltage signal received, current signal calculate by PLC, calculate required resistance, and the resistance examining side liquid constantly compares, until reach required liquid resistent value.Device is provided with touch-screen, the value relatable hindered by liquid by programming software and the relation of time are input to touch-screen, form the reference axis of liquid resistance resistance and the relation of time, the voltage and current signal detected goes out to give touch-screen by the change calculating resistance and time by central control unit PLC, liquid resistance and time are plotted in reference axis by touch-screen, form the numbering curve of a liquid resistance resistance, thus better observe the numbering of resistance in water tank.The utility model realizes the test-run a machine and the operation that are not having the electrician of operating experience also can realize electric motor starting cabinet, reduce equipment manufacturer after sale personnel to go on business number of times, raise the efficiency cost-saving.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of liquid resistance starting cabinet resistance automatic preparing device.
Fig. 2 is the structural representation of starting cabinet.
Embodiment
In Fig. 1, comprise one and gather the current transformer (3) of current signal, received current (3) signal and by this signal transmission to central control unit PLC(2) current transducer (4); Voltage signal is passed to central control unit PLC(2 by one) voltage transmitter (5); One is carried out the touch-screen (1) of information transmission with people, and touch-screen (1) is by high-voltage motor and system information conversion and by this signal transmission to central control unit PLC(2) carry out computing, obtain the required final resistance of fluid resistance; The current signal gathered, voltage signal are by central control unit PLC(2) carry out digitized processing to contactor one (6), contactor two (7) sends control command makes its adhesive, the adhesive of contactor makes electromagnetically operated valve (8) and motor (9) energized action, and then control in electrolytic powder adition process, motor (9) is moved up and down by screw mandrel band movable plate electrode (10) and solution is stirred, flowmeter (11) inspection adds the amount of electrolytic powder, fed back to central processing unit PLC, reach set amount and stop adding.Initial information is transferred to central control unit by touch-screen (1).The model of central control unit, producer are siemens PLC series of PLC.
In Fig. 2, motor (9) is rotated by belt drive screw mandrel (12), thus drive moving up and down of movable plate electrode (10), electrolyte is stirred, electrolytic powder is loaded in funnel (13), flowmeter (11), electromagnetically operated valve (8) are equipped with in funnel (13) bottom, flowmeter (11) detect add electrolytic powder number to central control unit PLC(2) feedback, central control unit PLC(2) break-make of Controlling solenoid valve of giving an order (8), electrolytic powder is made to add in water tank (14), by above-mentioned calculating process until reach required resistance value.
When starting cabinet is in trystate, now high-tension electricity must not be sent, 220V low tension is sent into starting cabinet, the on-the-spot parameter of electric machine is inputed to touch-screen (1), the signal received transforms and flows to central control unit PLC(2 by touch-screen), central control unit PLC(2) information computing is drawn the resistance that finally will configure liquid, current transformer (3) detects when movable plate electrode (10) is in the top and between static plate electrode (15), liquid current is transferred to current transducer (4), by current transducer (4) and voltage transmitter (5), the electric current after conversion and voltage signal are delivered to central control unit PLC(2 respectively), central control unit PLC(2) current and voltage signals of acceptance is carried out computing by programming formula, the initial resistance and the object resistance that calculate liquid compare, as initial resistance be less than object resistance time, central control unit PLC(2) just send signal and make contactor adhesive, electromagnetically operated valve (8) is opened, start to add electrolytic powder in water tank, central control unit PLC(2) open and close of Controlling solenoid valve (8) is carried out according to flowmeter (11), thus judge add electrolytic powder number, electrolytic powder adds when almost measuring, flowmeter (11) feeds back to central control unit PLC(2) thus electromagnetically operated valve (8) cuts out, while adding electrolytic powder, motor (9) is in running, the running of motor (9) drives the rotation of screw mandrel (12), movable plate electrode (10) is moved up and down, treat that liquid agitation is even, measure liquid resistance when movable plate electrode (10) is in the top to compare with object resistance again, as added electrolytic powder close to then stopping.
Claims (7)
1. a liquid resistance starting cabinet resistance automatic preparing device, it is characterized in that: comprise the touch-screen (1) for receiving extraneous input information, for gathering the Acquisition Circuit of the signal of telecommunication in the motor stator sub-loop of liquid resistance place to be detected, the central control unit PLC(2 of instruction is sent) after carrying out computing for external world's input information of receiving according to touch-screen (1) and the signal of telecommunication of Acquisition Circuit collection, for according to central control unit PLC(2) send the switching circuit of instruction unpack/closedown electrolytic powder passage, for detecting electrolytic powder flow and feeding back to central control unit PLC(2) flowmeter, for according to central control unit PLC(2) send the motor (9) that instruction moves up and down to drive movable plate electrode (10), the electromagnetically operated valve (8) that described switching circuit comprises contactor one (6), is connected with contactor one (6), motor (9) is through contactor two (7) and central control unit PLC(2) be connected.
2. a kind of liquid resistance starting cabinet resistance automatic preparing device according to claim 1, is characterized in that: described central control unit PLC(2) an output be connected with an input of touch-screen (1).
3. a kind of liquid resistance starting cabinet resistance automatic preparing device according to claim 1, is characterized in that: described Acquisition Circuit comprises current transformer (3), current transducer (4), voltage transmitter (5).
4. a starting cabinet, it is characterized in that: comprise outer water tank, more than one inner water tank (14) be loaded in outer water tank, static plate electrode (15) is fixed on inner water tank (14) inner bottom part, movable plate electrode (10) is connected with motor (9) through transmission mechanism, and the funnel (13) for splendid attire electrolytic powder is loaded on inner water tank (14) top; Also comprise liquid resistance starting cabinet resistance automatic preparing device;
Described liquid resistance starting cabinet resistance automatic preparing device comprises the touch-screen (1) for receiving extraneous input information, for gathering the Acquisition Circuit of the signal of telecommunication in the motor stator sub-loop of liquid resistance place to be detected, the central control unit PLC(2 of instruction is sent) after carrying out computing for external world's input information of receiving according to touch-screen (1) and the signal of telecommunication of Acquisition Circuit collection, for according to central control unit PLC(2) send the switching circuit of instruction unpack/closedown electrolytic powder passage, for detecting electrolytic powder flow and feeding back to central control unit PLC(2) flowmeter, for according to central control unit PLC(2) send the motor (9) that instruction moves up and down to drive movable plate electrode (10), the electromagnetically operated valve (8) that described switching circuit comprises contactor one (6), is connected with contactor one (6), motor (9) is through contactor two (7) and central control unit PLC(2) be connected, described flowmeter (11), electromagnetically operated valve (8) are loaded on funnel (13) bottom.
5. starting cabinet according to claim 4, it is characterized in that: described transmission mechanism comprises screw mandrel, the screw be set on screw mandrel, support, screw mandrel is in transmission connection through belt and motor (9), and screw mandrel lower end warp beam takes up on support, and screw is connected with movable plate electrode (10) through pole.
6. starting cabinet according to claim 4, is characterized in that: described central control unit PLC(2) an output be connected with an input of touch-screen (1).
7. starting cabinet according to claim 4, is characterized in that: described Acquisition Circuit comprises current transformer (3), current transducer (4), voltage transmitter (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520047702.5U CN204349840U (en) | 2015-01-23 | 2015-01-23 | Liquid resistance starting cabinet resistance automatic preparing device and the starting cabinet with this device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520047702.5U CN204349840U (en) | 2015-01-23 | 2015-01-23 | Liquid resistance starting cabinet resistance automatic preparing device and the starting cabinet with this device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204349840U true CN204349840U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520047702.5U Expired - Fee Related CN204349840U (en) | 2015-01-23 | 2015-01-23 | Liquid resistance starting cabinet resistance automatic preparing device and the starting cabinet with this device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204349840U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219456A (en) * | 2017-05-23 | 2017-09-29 | 国网天津市电力公司 | Waterr rheostat test device |
| CN109379000A (en) * | 2018-10-12 | 2019-02-22 | 襄阳市建盛工业控制有限公司 | A kind of liquid resistance soft-start cabinet |
-
2015
- 2015-01-23 CN CN201520047702.5U patent/CN204349840U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219456A (en) * | 2017-05-23 | 2017-09-29 | 国网天津市电力公司 | Waterr rheostat test device |
| CN109379000A (en) * | 2018-10-12 | 2019-02-22 | 襄阳市建盛工业控制有限公司 | A kind of liquid resistance soft-start cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20160123 |
|
| EXPY | Termination of patent right or utility model |