CN218601959U - Heating condensate constant-temperature water supply simulation device - Google Patents
Heating condensate constant-temperature water supply simulation device Download PDFInfo
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- CN218601959U CN218601959U CN202222484630.3U CN202222484630U CN218601959U CN 218601959 U CN218601959 U CN 218601959U CN 202222484630 U CN202222484630 U CN 202222484630U CN 218601959 U CN218601959 U CN 218601959U
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Abstract
The utility model discloses can solve the troubleshooting exercise of maintenance personal to constant temperature water supply equipment, design a set of heating condensate water constant temperature water supply analogue means, including logo controller, digital display appearance, converter, contactor KM, potentiometer and thermistor, logo controller is connected with digital display appearance, converter, contactor KM respectively; the direct current power supply is connected with the single-phase leakage protector, the logo controller and the transmitter; the digital display instrument is connected with the thermistor through the transmitter; the main loop of the frequency converter is connected with the contactor and the motor; a three-phase 380V power supply is connected to the upper side of a three-phase main contact of the contactor through a 3P air switch QF1, the lower side of the three-phase main contact of the contactor is connected to a three-phase power supply terminal of a frequency converter, and a three-phase load terminal of the frequency converter is connected to a motor. The device is flexible in design structure, and can repeatedly practice in aspects of wiring mode, parameter design, equipment programming and the like, so that the skill is improved. Meanwhile, statistical analysis can be carried out through common faults, practice is simulated, and maintenance efficiency is improved.
Description
Technical Field
The utility model relates to a maintenance electrician training technical field, concretely relates to heating condensate constant temperature water supply analogue means.
Background
The constant temperature water supply system has stable performance and good effect, is favored by a plurality of domestic heating enterprises, can be in case of system failure, needs maintenance personnel to maintain the system quickly, and provides a higher requirement for the skill level of the maintenance personnel.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving constant temperature water supply system maintenance personal and simulate the problem that the exercise is inconvenient and training time is not free on constant temperature water supply system to a heating condensate water constant temperature water supply analogue means can realize carrying out personnel's training anytime and anywhere, has promoted training efficiency greatly.
In order to realize the above utility model, the utility model provides a heating condensate constant temperature water supply analogue means, its characterized in that: the system comprises a logo controller, a digital display instrument, a frequency converter, a contactor KM, a potentiometer and a thermistor, wherein the logo controller is respectively connected with the digital display instrument, the frequency converter and the contactor KM; the direct current power supply is connected with the single-phase leakage protector, the logo controller and the transmitter; the digital display instrument is connected with the thermistor through the transmitter; the main loop of the frequency converter is connected with the contactor and the motor; a three-phase 380V power supply is connected to the upper side of a three-phase main contact of the contactor through a 3P air switch QF1, the lower side of the three-phase main contact of the contactor is connected to a three-phase power supply terminal of a frequency converter, and a three-phase load terminal of the frequency converter is connected to a motor; the lead wires of the potentiometer are respectively connected to No. 1, no. 2, no. 3 and No. 4 terminals of a control terminal of the frequency converter, wherein the No. 2 terminal and the No. 4 terminal are in short connection and then connected to one end of the potentiometer, the No. 1 terminal is connected to the other end of the potentiometer, and the No. 3 terminal is connected to a lead of a sliding resistor of the potentiometer; the No. 5 terminal and the No. 9 terminal of the frequency converter control loop are connected with an output contact Q3 of the logo controller;
the thermistor converts the temperature signal into a resistance signal, the resistance signal is converted into an analog quantity voltage signal through the transmitter and is sent into the digital display instrument, the digital display instrument sets an upper limit and a lower limit, and an upper limit output contact AH and a lower limit output contact AL of the digital display instrument are respectively connected to input points I3 and I4 of the logo controller;
when the actual water temperature exceeds the upper limit set by the CH6 digital display instrument, a high-order output point AH of the CH6 series digital display instrument acts, an action signal is input into an input point I3 of the logo controller, output contacts Q1 and Q2 of the logo controller are started through internal program setting, a main contactor is started to supply power to a frequency converter, then an output contact Q3 of the logo controller is started, the frequency converter starts a motor after receiving the starting signal, and the rotating speed of the motor is adjusted by adjusting the resistance value of a potentiometer; when the water temperature exceeds the lower limit set by the CH6 digital display instrument, the low-level output point AL of the CH6 series digital display instrument acts, an action signal is input into an input point I4 of the logo controller, and output contacts Q1, Q2 and Q3 of the logo controller are disconnected through internal program setting, so that a main contactor coil and a frequency converter starting signal are disconnected, and the motor is stopped.
Furthermore, the logo controller is also provided with a manual/automatic change-over switch SA1, a start button SB1 and a stop button SB2, when the manual/automatic change-over switch SA1 is arranged at a manual position, after the start button SB1 is pressed, output contacts Q1 and Q2 of the logo controller are closed, a main contactor is started to supply power to the frequency converter, then an output contact Q3 of the logo controller is started, the frequency converter starts the motor after receiving a start signal, and the rotating speed of the motor is adjusted by adjusting the resistance value of the potentiometer; when the stop button SB2 is pressed, the output contacts Q1, Q2 and Q3 of the logo controller are all disconnected, so that the main contactor coil and the frequency converter starting signal are disconnected, and the motor is stopped
The utility model discloses heating condensate water constant temperature water supply analogue means is simple light, easily moves, and the transport of being convenient for can realize the needs that carry out personnel's training anytime and anywhere. With the device, the training of maintenance personnel is not limited by the field, the training efficiency is greatly improved, and the training effect is enhanced.
Drawings
FIG. 1 is a button cartridge of the present invention;
FIG. 2 is a diagram of the position of the components of the present invention;
FIG. 3 is a connection diagram of the LOGO controller and the frequency converter of the present invention;
fig. 4 is an electrical schematic diagram of a constant temperature water supply simulation apparatus according to an embodiment of the present invention;
wherein 1, an operation table; 2. CH6 digital display instrument; 3. a start button; 4. a transfer switch; 5. a stop button; 6. an indicator light; 7. a mesh plate; 8. 3P is opened in an empty mode; 9. a single-phase leakage protector; 10. a direct current power supply; 11. a contactor; 12. a controller; 13. a frequency converter; 14. a thermistor; 15. an electric motor; 16. (ii) a A potentiometer; 17. and a transmitter.
Detailed Description
Referring to fig. 1 to 3, a CH6 digital display, a start button 3, a change-over switch 4, a stop button 5 and an indicator light 6 are arranged on an operation console 1 of the heating condensed water constant-temperature water supply simulation device; the original disc of the heating condensed water constant temperature water supply simulation device is provided with a 3P air switch 8, a single-phase leakage protector 9, a direct current power supply 10, a contactor 11, a controller 12, a frequency converter 13, a thermistor 14, a motor 15, a potentiometer 16 and a transmitter 17 on a mesh disc 7.
The heating condensed water constant temperature water supply simulation device adopts the Siemens logo controller as a main control element, and the element has stable performance, low cost, simple programming, easy operation, simple maintenance and easy learning, and is particularly suitable for the simple program control. The thermistor is adopted as a temperature measuring element, and belongs to a pressure spring type temperature sensing element, so that the vibration resistance is good; the temperature measurement precision is high; high mechanical strength and high-temp and pressure resistance. The frequency converter is adopted to control and protect the motor, so that the performance of the motor can be better exerted, the motor is protected to operate safely and reliably, and the utilization rate of electric energy is improved. The device is matched with sensors and transmitters output by various simulators to complete measurement, conversion, display and control of physical quantities such as temperature, pressure, liquid level, components and the like, is suitable for signal types such as standard voltage, current, thermal resistance, thermocouples and the like, has an error less than 0.5 percent F.S, has functions of adjustment and correction and digital filtering, is output in a transmission mode, and can output the measured and converted display values in a standard current and voltage mode for other equipment. The resistance signal of the thermistor is converted into an analog voltage signal by a transmitter and is supplied to a CH6 digital display instrument. The transmitter is very important and is one of the key elements for realizing temperature display.
The bottom plate of the heating condensed water constant-temperature water supply simulation device is respectively provided with an air switch, a contactor, a button, a Siemens logo controller, a frequency converter, a direct-current power supply, a CH6 series digital display instrument, a PT100 thermistor, a transmitter, an adjustable potentiometer and the like.
The logo controller is connected with the button, the digital display instrument, the frequency converter, the contactor and the indicator lamp respectively; the direct current power supply is connected with the single-phase leakage protector, the logo controller and the transmitter; the digital display instrument is connected with the PT100 thermistor through the transducer; the main loop of the frequency converter is connected with the contactor and the motor.
Through the connection, the temperature signal is converted into the resistance signal by the PT100, the resistance signal is converted into the analog voltage signal by the transmitter and is sent into the CH6 digital display instrument, the actual temperature can be displayed, the upper limit and the lower limit are set by the parameter setting of the digital display instrument, the upper limit output contact AH and the lower limit output contact AL of the digital display instrument are respectively connected to the input points I3 and I4 of the logo controller, and in addition, the automatic control can be realized by reasonable programming.
The digital display is used as a core element, not only can the temperature signal be identified, but also the liquid level signal, the pressure signal and the like can be identified, if a liquid level meter is added into the tray, the constant-temperature and constant-liquid-level water supply can be realized through reasonably setting parameters and programming; if a pressure sensor is added into the tray, constant-pressure and constant-temperature water supply can be realized through reasonable parameter setting and programming, and the functions can be expanded and the tray is practical.
Fig. 4 is an electrical schematic diagram of the present apparatus, and the following is an analysis of the schematic diagram.
(1) Main circuit analysis
A three-phase 380V power supply is connected to the upper side of a three-phase main contact of a contactor through a 3P air switch QF1, the lower side of the three-phase main contact of the contactor is connected to three-phase power supply terminals (L21, L22 and L23) of a frequency converter, and three-phase load terminals (U, V and W) of the frequency converter are connected to a motor.
(2) Control circuit analysis
The speed regulation function of the frequency converter: the function adopts manual potentiometer adjustment, lead wires of the potentiometer are respectively connected to No. 1, no. 2, no. 3 and No. 4 terminals of a control terminal of the frequency converter, wherein the No. 2 terminal and the No. 4 terminal are connected together in a short-circuit mode and then connected to one end of the potentiometer; the No. 1 terminal is connected to the other end of the potentiometer; the No. 3 terminal is connected to a lead of the sliding resistor of the potentiometer; the rotating speed of the motor is adjusted by adjusting the resistance value of the potentiometer.
The starting function of the frequency converter is as follows: this function adopts external terminal control mode, realizes with No. 5 terminals and No. 9 terminals of converter, and when No. 5 terminals and No. 9 terminal short circuits of converter control circuit, the starting signal has just been received to the converter, just later starts according to the starting mode that the converter set for, just runs according to the frequency that the potentiometre set for after the start-up.
Manual start-up: manual/automatic change-over switch SA1 arranges in manual position, presses start button SB1 after, and the output contact Q1 of logo controller, Q2 are closed and the auto-lock drives main contactor KM coil, and main contactor KM actuation has done the start preparation for the converter power transmission, has done after the converter gets electricity, lights operation pilot lamp HL simultaneously. After the frequency converter is electrified for three seconds, an output contact Q3 of the logo controller is closed, a terminal 5 of the frequency converter is in short circuit with a terminal 9 of the frequency converter, the frequency converter receives a starting signal, and the frequency converter drives the motor to operate at the frequency set by the potentiometer after being started.
Manual stop: the manual/automatic change-over switch SAS1 is arranged at a manual position, when the motor operates manually, the stop button SB2 is pressed, the output contacts Q1, Q2 and Q3 of the logo controller are all disconnected, the No. 5 terminal and the No. 9 terminal of the frequency converter are disconnected, the frequency converter stops operating, the coil of the main contactor KM is powered off, the main contactor is disconnected, the frequency converter has power failure, the operation indicator lamp HL is powered off, and the motor can be stopped manually.
Temperature display and control: through the cooperation of PT100 thermistor and changer, convert the analog quantity voltage signal that CH6 series digital display appearance can discern into in the digital display appearance with the temperature that will measure, the digital display appearance just changes according to the change of temperature automatically. And then the water pump is automatically started or stopped by setting the upper limit and the lower limit of the water temperature.
And (3) automatic start: the manual/automatic change-over switch SA1 is arranged at an automatic position, when the actual water temperature exceeds the upper limit set by the CH6 digital display instrument, a high-order output point AH of the CH6 series digital display instrument sends an action signal, the action signal is input into an input point I3 of the logo controller, output contacts Q1 and Q2 of the logo controller are started through internal program setting, a main contactor is started to supply power to the frequency converter, an operating indicator lamp is lightened at the same time, the output contact Q3 of the logo controller is started after three seconds, and the frequency converter starts the motor after receiving the starting signal.
Automatic stopping: the manual/automatic change-over switch SA1 is arranged at an automatic position, when the water temperature exceeds the lower limit set by the CH6 digital display instrument, a low-position output point AL of the CH6 series digital display instrument sends out an action signal, and output contacts Q1, Q2 and Q3 of the logo controller are disconnected through internal program setting, so that a frequency converter starting signal and a main contactor coil are disconnected, and the motor is stopped.
The utility model discloses can solve the maintenance personal and practise to the troubleshooting of constant temperature water supply equipment, design one set of heating condensate constant temperature water supply analogue means, this set of device project organization is nimble, and the accessible is in the mode of working a telephone switchboard, parameter design, and the aspect such as equipment programming is practised repeatedly, improves technical ability. Meanwhile, statistical analysis can be carried out through common faults, practice is simulated, and maintenance efficiency is improved. The device has stable performance, high accuracy and good expansibility, and can realize the expanded function by partially modifying the sensing element. The method has good economy and can be used for the skill identification and maintenance data analysis of electricians.
Claims (2)
1. The utility model provides a heating condensate constant temperature water supply analogue means which characterized in that: the system comprises a logo controller, a digital display instrument, a frequency converter, a contactor KM, a potentiometer and a thermistor, wherein the logo controller is respectively connected with the digital display instrument, the frequency converter and the contactor KM; the direct current power supply is connected with the single-phase leakage protector, the logo controller and the transmitter; the digital display instrument is connected with the thermistor through the transmitter; the main loop of the frequency converter is connected with the contactor and the motor; a three-phase 380V power supply is connected to the upper side of a three-phase main contact of the contactor through a 3P air switch QF1, the lower side of the three-phase main contact of the contactor is connected to a three-phase power supply terminal of a frequency converter, and a three-phase load terminal of the frequency converter is connected to a motor; the lead wires of the potentiometer are respectively connected to No. 1, no. 2, no. 3 and No. 4 terminals of a control terminal of the frequency converter, wherein the No. 2 terminal and the No. 4 terminal are in short connection and then connected to one end of the potentiometer, the No. 1 terminal is connected to the other end of the potentiometer, and the No. 3 terminal is connected to a lead of a sliding resistor of the potentiometer; the No. 5 terminal and the No. 9 terminal of the frequency converter control loop are connected with an output contact Q3 of the logo controller;
the thermistor converts the temperature signal into a resistance signal, the resistance signal is converted into an analog quantity voltage signal through the transmitter and is sent into the digital display instrument, the digital display instrument sets an upper limit and a lower limit, and an upper limit output contact AH and a lower limit output contact AL of the digital display instrument are respectively connected to input points I3 and I4 of the logo controller;
when the actual water temperature exceeds the upper limit set by the CH6 digital display instrument, a high-order output point AH of the CH6 series digital display instrument acts, an action signal is input into an input point I3 of the logo controller, output contacts Q1 and Q2 of the logo controller are started through internal program setting, a main contactor is started to supply power to a frequency converter, then an output contact Q3 of the logo controller is started, the frequency converter starts a motor after receiving the starting signal, and the rotating speed of the motor is adjusted by adjusting the resistance value of a potentiometer; when the water temperature exceeds the lower limit set by the CH6 digital display instrument, the low-level output point AL of the CH6 series digital display instrument acts, an action signal is input into an input point I4 of the logo controller, and output contacts Q1, Q2 and Q3 of the logo controller are disconnected through internal program setting, so that a main contactor coil and a frequency converter starting signal are disconnected, and the motor is stopped.
2. A heating condensed water constant temperature water supply simulation device according to claim 1, characterized in that: the logo controller is further provided with a manual/automatic change-over switch SA1, a start button SB1 and a stop button SB2, when the manual/automatic change-over switch SA1 is arranged at a manual position, after the start button SB1 is pressed, output contacts Q1 and Q2 of the logo controller are closed, a main contactor is started to supply power to a frequency converter, then an output contact Q3 of the logo controller is started, the frequency converter starts a motor after receiving a start signal, and the rotating speed of the motor is adjusted by adjusting the resistance value of a potentiometer; pressing stop button SB2, output contacts Q1, Q2, Q3 of the logo controller are all opened, thereby disconnecting the main contactor coil and the inverter start signal, and further stopping the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222484630.3U CN218601959U (en) | 2022-09-20 | 2022-09-20 | Heating condensate constant-temperature water supply simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222484630.3U CN218601959U (en) | 2022-09-20 | 2022-09-20 | Heating condensate constant-temperature water supply simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218601959U true CN218601959U (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222484630.3U Active CN218601959U (en) | 2022-09-20 | 2022-09-20 | Heating condensate constant-temperature water supply simulation device |
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| Country | Link |
|---|---|
| CN (1) | CN218601959U (en) |
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- 2022-09-20 CN CN202222484630.3U patent/CN218601959U/en active Active
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