CN201266443Y - Device for training electric fault diagnosis - Google Patents
Device for training electric fault diagnosis Download PDFInfo
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- CN201266443Y CN201266443Y CNU2008201607806U CN200820160780U CN201266443Y CN 201266443 Y CN201266443 Y CN 201266443Y CN U2008201607806 U CNU2008201607806 U CN U2008201607806U CN 200820160780 U CN200820160780 U CN 200820160780U CN 201266443 Y CN201266443 Y CN 201266443Y
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- frequency converter
- pump
- training device
- contactor
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Abstract
The utility model discloses an electrical failure diagnosis practical training device, comprising a water box which is internally provided with two water pumps; the two water pumps are respectively connected with two check valves and communicated with a water tap by a connecting pipe; the connecting pipe is provided with a teletransmission pressure gauge; the two water pumps are respectively connected with two three-phase AC asynchronous motors controlled by a frequency converter; and the frequency converter and the teletransmission pressure gauge are also connected with a controller. The electrical failure diagnosis practical training device comprises typical industrial electrical products and control devices such as the frequency converter, a singlechip, the pressure gauge, an automatic air switch, an AC contactor, an intermediate relay, a button, a signal lamp, a terminal row, and the like; furthermore, the electric failure diagnosis practical training device also comprises a mechanical and process-loaded real electrical control system; simultaneously, the electric failure diagnosis practical training device has the advantages of simple design, smart structure, visual control process, strong visual impact force, hidden failure points, full failure types, convenient operation and low cost, and is convenient for the demonstration of teachers and practical training of students.
Description
Technical field
The utility model relates to a kind of electric fault diagnosis actual training device.
Background technology
Analyzing the electric fault phenomenon, carry out electric fault diagnosis, is one of most important technical ability of stipulating in the professional standard of maintenance electrician country.And existing electric fault diagnosis actual training device has been ignored the notion of engineering, adopts the course of work of control device simulation system, and actual training device has been made simple teaching aid, does not have the feature of physical device, can not reflect the real work situation of system truly; Do not adopt industrialized standard component and material, the layout of electric elements, instrument and line complanation, with industrial products require far apart; Do not contain frequency converter, do not contain single-chip microcomputer yet; Parameter can not be set fault, short trouble and equipment counter-rotating fault are set.The trouble spot exposes, and can fix a breakdown by the position of observing breakdown switch, loses the meaning that fault is set.Structure is huge, cost is high, not visual in image.Unit real trainings such as therefore, each is big, electric, the robotization of special secondary school universities and colleges, vocational school and relevant speciality, social electrician's training, each maintenance electrician of counties and cities identify institute press for the better electric fault diagnosis actual training device appearance that can overcome above-mentioned defective.
The utility model content
Goal of the invention: technical problem to be solved in the utility model is at the deficiencies in the prior art, and a kind of electric fault diagnosis actual training device is provided.
Technical scheme: the utility model discloses a kind of electric fault diagnosis actual training device, comprise water tank, be provided with two with charging pump in water tank, described water pump is connected with non-return valve respectively, and water pump is communicated with water swivel by connecting pipe; Connecting pipe is provided with the teletransmission tensimeter; Described water pump is connected with three-phase AC asynchronous motor by Frequency Converter Control respectively; Described frequency converter and teletransmission tensimeter also are connected with controller.
In the utility model, preferably, described controller is included as many pump controllers.
Beneficial effect: electric fault diagnosis actual training device described in the utility model has taken into full account the reality of industry spot, requirement according to industrial products, integrated application and integrated motor and electric drive technology, Electrical Control Technology, variable-frequency control technique, singlechip technology, automation instrument technology, fluid machinery technology etc., not only comprise frequency converter, single-chip microcomputer, tensimeter, automatic air-break switch, A.C. contactor, auxiliary reclay, button, signal lamp, typical industrial electric product such as terminal row and control device, and comprised real electric control system of machinery and technology load, it is succinct to have simultaneously design again, structure is ingenious, control procedure is directly perceived, give people's visual impact strong, the trouble spot is hidden, it is full fault type to be set, easy to operate, characteristics with low cost are convenient to teacher's demonstration and student's real training.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is done further and to be specified.
Fig. 1 is the utility model electric fault diagnosis actual training device structural representation.
Fig. 2 is an electric circuit diagram in the utility model.
Embodiment
As shown in Figure 1, the utility model discloses a kind of electric fault diagnosis actual training device, comprise water tank 1, in water tank 1, be provided with 2,6, two water pumps of two water pumps and be connected with two non-return valve 3,7 respectively, and be communicated with water swivel 5 by connecting pipe 8; Connecting pipe 8 is provided with teletransmission tensimeter 4; Two water pumps are connected with two three-phase AC asynchronous motors by Frequency Converter Control respectively; Frequency converter and teletransmission tensimeter also are connected with controller.Described controller is many pump controllers.
More particularly, as shown in Figure 2, the utility model actual training device three-phase total power switch QF1 end of incoming cables is connected with power supply, and thermal element, three-phase AC asynchronous motor M1 that three-phase total power switch QF1 leading-out terminal and A.C. contactor KM2 often open main contacts, electrothermal relay FR1 are connected in series.Actual training device total power switch QF1 leading-out terminal and frequency converter, A.C. contactor KM1 often open main contacts, three-phase AC asynchronous motor M1 is connected in series.Inverter output terminal and A.C. contactor KM1 often open main contacts, three-phase AC asynchronous motor M2 is connected in series.Thermal element, three-phase AC asynchronous motor M2 that actual training device total power switch QF1 leading-out terminal and A.C. contactor KM4 often open main contacts, electrothermal relay FR2 are connected in series.M1 and corresponding respectively 1# water pump, the 2# pump operation of dragging of M2.
The L1 of control power switch QF2 end of incoming cables and three-phase total power switch QF1 leading-out terminal mutually connects, after controlling power switch QF2 leading-out terminal and short trouble and switch FS1 is set is connected in series, and connecting to neutral line N.Control power light HL1 two ends are connected with zero line N with the QF2 leading-out terminal respectively.After normally opened contact, the frequency converter run indicator HL6 that QF2 leading-out terminal and open fault are provided with switch Fo1, frequency converter operation indicating relay K1 is connected in series, connecting to neutral line N.After indicating fault normally opened contact TA-TC, the frequency converter failure pilot lamp HL7 that open fault is provided with switch Fo1 leading-out terminal and frequency converter is connected in series, connecting to neutral line N.L end, the N end of the many pump controllers of FPC is provided with switch Fo1 leading-out terminal with open fault respectively, zero line N links to each other.Many pump controllers of FPC pressure signal input end V+, IN end, GND end are high-end with the teletransmission tensimeter respectively, pressure signal input end, public end link to each other.Stopping signal input switch SA1 links to each other with DI2 end, the CM2 end of the many pump controllers of FPC.The many pump controllers of FPC are just being transported line output signal end FWD, CM1 and are being connected with frequency converter terminal operation control terminal OP6, CM respectively; Many pump controllers of FPC output signal end D/A, CM2 are connected with frequency converter voltage analog quantity input port AN1, GND respectively, are used for the analog quantity speed governing.
After many pump controllers of FPC 1# pump variable frequency operation output terminal B1 and A.C. contactor KM2 normally closed auxiliary contact, A.C. contactor KM3 normally closed auxiliary contact, A.C. contactor KM1 coil are connected in series, connecting to neutral line N.1# pump variable frequency run indicator HL2 and A.C. contactor KM1 coil are connected in parallel.After many pump controllers of FPC 1# water pump power frequency operation output terminal G1 and A.C. contactor KM1 coil normally closed auxiliary contact, electrothermal relay FR1 normally closed contact, A.C. contactor KM2 coil are connected in series, connecting to neutral line N.1# water pump power frequency run indicator HL3 and A.C. contactor KM2 coil are connected in parallel.After many pump controllers of FPC 2# pump variable frequency operation output terminal B2 and A.C. contactor KM1 normally closed auxiliary contact, A.C. contactor KM4 normally closed auxiliary contact, A.C. contactor KM3 coil are connected in series, connecting to neutral line N.2# pump variable frequency run indicator HL4 and A.C. contactor KM3 coil are connected in parallel.After many pump controllers of FPC 2# water pump power frequency operation output terminal G2 and A.C. contactor KM3 normally closed auxiliary contact, electrothermal relay FR12 normally closed contact, A.C. contactor KM4 coil are connected in series, connecting to neutral line N.2# water pump power frequency run indicator HL5 and A.C. contactor KM4 coil are connected in parallel.Frequency converter operation indicator signal OUT, DC24V link to each other with direct current 24V relay K 1 coil corresponding end respectively.
Electric fault diagnosis actual training device circuit working process described in the utility model is as follows: short trouble is provided with switch FS1, is used for the mimic channel short trouble when closed; Open fault is provided with switch Fo1, is used for the mimic channel open circuit fault during disconnection.During operate as normal, short trouble is provided with switch FS1 and is in open position, and open fault is provided with switch Fo1 and is in the close position.At first will inject water in the water tank, behind power turn-on QF1, the QF2, energized, HL1 is bright for the control power light.Set the current pressure setting value by the many pump controllers of FPC.
Disconnect stopping signal input switch SA1, many pump controllers of FPC DI2 end and CM2 end are disconnected, many pump controllers carry out start and stop control by its FWD, CM1 terminal to frequency converter, by D/A, CM2 terminal frequency converter are carried out rotating speed control.Connect the B1 end of many pump controllers, A.C. contactor KM1 coil gets, A.C. contactor KM1 often leaves the main contacts closure, the 1# pump motor is connected frequency converter, start the work of 1# pump variable frequency, pilot lamp HL2 lamp is bright, feed pump by Frequency Converter Control is sent the water in the water tank into the water pipeline, increase along with the frequency converter output frequency, pump rotary speed raises, pipe network water pressure strengthens, and the teletransmission tensimeter of installing on the pipe network detects the variation of hydraulic pressure at any time, and detected simulating signal is sent in many pump controllers and relatively also handled with setting pressure.When water swivel was opened less (water consumption is less), frequency converter only needs that the 1# water pump is carried out variable frequency adjustment, and just can to keep the pressure stability of system be setting value.
If water swivel 5 is opened greatly (water consumption increasing), and the teletransmission tensimeter is less than normal at the hydraulic pressure that the pipe network end records, when not reaching the system pressure setting value, then the frequency converter output frequency raises, when 1# pump working frequency is elevated to 50Hz, through certain time-delay (delay time can be set arbitrarily), if measured pressure value does not still reach the system pressure setting value, many pump controllers then disconnect the B1 end, A.C. contactor KM1 coil losing electricity, A.C. contactor KM1 often leaves main contacts and disconnects, cutting off frequency converter is connected with the 1# pump motor, the 1# water pump stops the operation of frequency conversion state, pilot lamp HL2 lamp goes out, connect the G1 end of many pump controllers, A.C. contactor KM2 coil gets, A.C. contactor KM2 often leaves the main contacts closure, is the power frequency duty with the 1# water pump by the frequency conversion state exchange, and shutoff frequency converter, delayed time 3 seconds, connect the B2 end of many pump controllers, A.C. contactor KM3 coil gets electric, and A.C. contactor KM3 often leaves the main contacts closure, and the 2# pump motor is connected frequency converter, start the work of 2# pump variable frequency, pilot lamp HL4 lamp is bright, and frequency converter is switched to the 2# water pump, starts the 2# water pump and carries out frequency conversion work, water system relies on the frequency of operation of regulating the 2# pump to come systems stabilisation pressure, realizes frequency conversion double pump operation of a power frequency.When water swivel is opened little (water consumption minimizing), the output frequency of frequency converter can descend, when 2# water pump frequency drops to 0Hz, through certain time-delay (delay time can be set arbitrarily), the hydraulic pressure that the teletransmission tensimeter records at the pipe network end still surpasses the pressure of default, many pump controllers disconnect the G1 end, A.C. contactor KM2 coil losing electricity, A.C. contactor KM2 often leaves main contacts and disconnects, cut off the power supply of 1# pump motor power frequency, stop the water pump power frequency operation No. 1, carry out the pressure stability that variable frequency adjustment keeps system by the 2# water pump.If water swivel is opened greatly (water consumption increasing), when the 2# pump variable frequency is operated in 50Hz, through certain time-delay (delay time can be set arbitrarily), if gaging pressure does not still reach setting value, then the B2 end is disconnected, connect the G2 end, is the power frequency duty with the 2# pump by the frequency conversion state exchange, delayed time 3 seconds, and connected the B1 end, start the 1# pump and carry out frequency conversion work.During shutdown, closed stopping signal input switch SA1, the DI2 of many pump controllers end is closed with the CM2 end, and after DI2 surpassed for two seconds with the CM2 terminal is closed, all output of controller was all closed, and comprised that D/A exports.Set and show all normal with measurement.The order that output is closed is for closing earlier D/A3 second, and (CM1 FWD) 2 seconds, closes the variable frequency pump contactor, last orderly close-down power frequency contactor (at first stopping earlier), midfeather 2 seconds to close RUN.
In order to prevent that A.C. contactor KM1 and A.C. contactor KM2, A.C. contactor KM3 and A.C. contactor KM4 from moving simultaneously, damage frequency converter, between A.C. contactor KM1 and the A.C. contactor KM2, be provided with interlocking between A.C. contactor KM3 and the A.C. contactor KM4; Simultaneously in order to prevent that the frequency converter from driving two pump variable frequency operations simultaneously, also is provided with interlocking between A.C. contactor KM1 and A.C. contactor KM3.
In addition, electric fault diagnosis actual training device described in the utility model has taken into full account the reality of industry spot, have the anti-shake compensation control function of pressure measuring value, parameter adjustment and setting and have password locking and defencive function, employing artificial intelligence FUZZY ALGORITHMS FOR CONTROL, the control accuracy height, interior band watchdog circuit, adopt digital filtering and multinomial interference protection measure, prevent that software from running the chikung energy, have pressure transducer zero point and full scale compensate function, having low discharge water pump sleep control function; Have the manual operator function, but the manual adjustments output voltage comes the frequency of control of conversion device etc.
The utility model can be provided with fault, components and parts fault, parameter four kinds of fault, water pump counter-rotating faults are set.The setting of fault, any two same electrical sites all can be provided with breakdown switch Fo in circuit, and when breakdown switch Fo was closed, circuit was normal; When breakdown switch Fo disconnected, circuit generation open circuit fault was provided with switch Fo1 as open fault.Any in the drawings two different potentials points all can be provided with breakdown switch FS, and when breakdown switch FS disconnected, circuit was normal; When breakdown switch FS was closed, the circuit fault that is short-circuited was provided with switch FS1 as short trouble.
Electric control box is forward and backward in the utility model all opens the door with lockly, in a distance, distance control box back door one insulating barrier is set, and arranges that behind insulating barrier fault is installed is provided with switch.From the control box panel with open that the control box Qianmen sees, all the same element, arrangements of elements and wiring with technical grade product.The setting of fault and eliminating only need be opened the back door and be stirred fault and switch is set gets final product.During real training, after fault set, closing back door was also locked, thereby realized the thoroughly hidden of trouble spot.Tempered and cultivated the ability that the student uses the electrical principle analysis and searches fault.The setting of components and parts fault replaces normal components and parts with the components and parts that damage.Parameter is provided with fault, because that frequency converter or many pump controllers parameter are provided with is unreasonable, and the system that causes can't normally move.Be provided with too shortly as the frequency converter acceleration time, the frequency converter overcurrent fault can occur; It is too short that frequency converter is provided with deceleration time, frequency converter superpotential fault can occur.Water pump counter-rotating fault, set current pressure setting value P01=0.3Mpa, find that system pressure is 0.28Mpa when 1# pump variable frequency operation 50Hz, when still not reaching pressure set points 0.3Mpa, the 1# water pump is the power frequency duty by the frequency conversion state exchange, and shutoff frequency converter, delayed time 3 seconds, frequency converter is switched to the 2# water pump, realize 1# water pump power frequency, the operation of 2# pump variable frequency, but when the frequency of operation of water system adjusting 2# water pump reached 50Hz, system pressure but had only 0.25Mpa.Under the constant situation of water swivel aperture, 1# water pump power frequency has appearred, two water pumps of 2# pump variable frequency are opened does not simultaneously have the 1# pump variable frequency to open the big strange phenomenon of pressure separately.Failure cause is that aquifer yield was bigger when pump motor was just changeing due to the counter-rotating of 1# water pump power frequency, 2# pump variable frequency reversed, and pressure rises obviously, the pump motor counter-rotating, and pressure is little.Adjust A.C. contactor KM2 respectively, any two-phase of A.C. contactor KM3 main contacts electric power incoming line gets final product.
The utility model provides a kind of thinking and method of electric fault diagnosis actual training device; the method and the approach of this technical scheme of specific implementation are a lot; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.The all available prior art of each component part not clear and definite in the present embodiment is realized.
Claims (2)
1, a kind of electric fault diagnosis actual training device comprises water tank (1), is provided with two and it is characterized in that with charging pump described water pump is connected with non-return valve respectively in water tank (1), and water pump is communicated with water swivel (5) by connecting pipe (8); Connecting pipe (8) is provided with teletransmission tensimeter (4); Described water pump is connected with three-phase AC asynchronous motor by Frequency Converter Control respectively; Described frequency converter and teletransmission tensimeter also are connected with controller.
2, electric fault diagnosis actual training device according to claim 1 is characterized in that, described controller is many pump controllers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201607806U CN201266443Y (en) | 2008-10-20 | 2008-10-20 | Device for training electric fault diagnosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201607806U CN201266443Y (en) | 2008-10-20 | 2008-10-20 | Device for training electric fault diagnosis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266443Y true CN201266443Y (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201607806U Expired - Fee Related CN201266443Y (en) | 2008-10-20 | 2008-10-20 | Device for training electric fault diagnosis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266443Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980320A (en) * | 2010-11-25 | 2011-02-23 | 南京化工职业技术学院 | Control system of chemical operation training device |
| CN106710391A (en) * | 2016-12-28 | 2017-05-24 | 广东技术师范学院 | Frequency converter fault simulation system |
-
2008
- 2008-10-20 CN CNU2008201607806U patent/CN201266443Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980320A (en) * | 2010-11-25 | 2011-02-23 | 南京化工职业技术学院 | Control system of chemical operation training device |
| CN106710391A (en) * | 2016-12-28 | 2017-05-24 | 广东技术师范学院 | Frequency converter fault simulation system |
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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: 20090701 Termination date: 20111020 |