CN211457003U - Closed-loop control safety switch power supply for water treatment equipment - Google Patents
Closed-loop control safety switch power supply for water treatment equipment Download PDFInfo
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- CN211457003U CN211457003U CN202020283459.8U CN202020283459U CN211457003U CN 211457003 U CN211457003 U CN 211457003U CN 202020283459 U CN202020283459 U CN 202020283459U CN 211457003 U CN211457003 U CN 211457003U
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Abstract
A safety switch power supply for closed-loop control of water treatment equipment comprises a shell, wherein a touch screen is arranged on the shell and used for setting an output power supply or an output current of the switch power supply; an electric unit and a controller which are matched with the touch screen are arranged in the shell, the electric unit comprises an alternating current input module which is electrically connected, the alternating current input module is used for being connected with 220V-380V alternating current commercial power, the alternating current input module is connected with a rectifying circuit, an inverter circuit, a high-frequency transformer, a filter circuit and a direct current output module, and the direct current output module is used for being connected with a load to supply power; the controller is electrically connected with the rectifying circuit through a voltage-undervoltage circuit, the controller is electrically connected with the inverter circuit through an overcurrent detector and a temperature detection circuit, and the controller is electrically connected with the high-frequency transformer through the temperature detection circuit; the overvoltage and undervoltage circuit is used for keeping the internal voltage of the switching power supply stable, and the overcurrent detector is used for keeping the output current of the switching power supply stable.
Description
The technical field is as follows:
the utility model relates to a safety switch power supply of closed-loop control for water treatment equipment.
Background art:
a switching power supply, also called a switching power supply or a switching converter, is a high-frequency electric energy device, and is a power supply, which is used for converting a level voltage into a voltage or a current required by a user terminal through different types of architectures; the input of a switching power supply is mostly an alternating current power supply, and the output is mostly a device requiring a direct current power supply.
The switching power supply product is widely applied to the fields of industrial automation control, military equipment, scientific research equipment, LED illumination, industrial control equipment, communication equipment, power equipment, instruments and meters, medical equipment, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, liquid crystal displays, LED lamps, communication equipment, audio-visual products, security monitoring, LED lamp belts, computer cases, digital products, instruments and the like.
In the field of water treatment equipment, the switching power supply is also widely applied; generally, the switching power supply can provide a corresponding level of supply voltage and supply current according to the requirement of a user, and the operating principle is as follows: the AC commercial power of 220V-380V is accessed, and is converted into DC voltage for users to use after filtering and rectifying; in the power supply process, the conventional switching power supply only provides electric energy for the load, and when the power grid fails or the voltage level fluctuates, the switching power supply is also influenced, cannot normally supply power to the direct current load, easily burns the load, and has low safety.
The utility model has the following contents:
the embodiment of the utility model provides a closed-loop control's safety switch power supply for water treatment facilities, structural design is reasonable, adopts closed-loop control, can keep long-time normal power supply to user side load, protects the load simultaneously, reduces the influence that commercial power electric wire netting is undulant or emergency fault brought the load, promotes the power supply security, has solved the problem that exists among the prior art.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
a safety switch power supply for closed-loop control of water treatment equipment comprises a shell, wherein a touch screen is arranged on the shell and used for setting an output power supply or an output current of the switch power supply; an electric unit and a controller which are matched with the touch screen are arranged in the shell, the electric unit comprises an alternating current input module which is electrically connected, the alternating current input module is used for being connected with 220V-380V alternating current commercial power, the alternating current input module is connected with a rectifying circuit, an inverter circuit, a high-frequency transformer, a filter circuit and a direct current output module, and the direct current output module is used for being connected with a load to supply power; the controller is electrically connected with the rectifying circuit through a voltage-undervoltage circuit, the controller is electrically connected with the inverter circuit through an overcurrent detector and a temperature detection circuit, and the controller is electrically connected with the high-frequency transformer through the temperature detection circuit; the overvoltage and undervoltage circuit is used for keeping the voltage inside the switching power supply stable, the overcurrent detector is used for keeping the output current of the switching power supply stable, and the temperature detection circuit is used for adjusting the temperature inside the shell.
The shell is also uniformly provided with heat dissipation holes.
The alternating current input module is a three-phase input wiring terminal.
The rectifier circuit comprises a rectifier transformer, wherein the primary side of the rectifier transformer is electrically connected with the three-phase input wiring terminal, and the secondary side of the rectifier transformer is connected with a rectifier bridge and a voltage detection pin.
An air switch and a fuse are arranged between the primary side of the rectifier transformer and the three-phase input connecting terminal.
The overvoltage and undervoltage circuit comprises a first comparator and a second comparator, wherein the negative input end of the second comparator is connected with the voltage detection pin through a second resistor, a first resistor and a variable resistor, and the variable resistor is used for adjusting the threshold value of overvoltage or undervoltage; the positive input end of the second comparator is connected with the positive input end of the first comparator through a third resistor and a fourth resistor which are connected in parallel, and the first comparator and the second comparator are connected with a power supply through a fifth resistor.
The first comparator is an under-voltage comparator, the second comparator is an over-voltage comparator, and the first comparator and the second comparator are both LM339 in model.
The inverter circuit is provided with diodes connected in parallel.
The type of the over-current detector is LM2903, eight pins are arranged on the over-current detector, the first pin is a first output pin, the second pin is a first input negative pin, the third pin is a first input positive pin, the fourth pin is a grounding pin, the fifth pin is a second input positive pin, the sixth pin is a second input negative pin, the seventh pin is a second output pin, and the eighth pin is a power supply pin.
The temperature detection circuit comprises a temperature detection chip, the model of the temperature detection chip is TC4427, eight pins are arranged on the temperature detection chip, the second pin of the temperature detection chip is connected with a sixth resistance connection power supply, the sixth pin of the temperature detection chip is connected with a second capacitor and a third capacitor which are connected in parallel, the fifth pin of the temperature detection chip is connected with an MOS (metal oxide semiconductor) tube through a seventh resistor and an eighth resistor which are connected in parallel, and the MOS tube is connected with a cooling fan matched with the cooling holes.
By adopting the structure, the utility model forms closed-loop control through each electric module and unit in the shell, and carries out real-time detection in the working process of the switching power supply, thereby preventing faults or emergency situations, ensuring the normal and stable operation of the switching power supply and improving the safety; the output voltage or the output current required by a user is set through the touch screen, and the setting of multiple sections of parameters can be carried out on the touch screen to meet different requirements of the user; the temperature inside the shell is reduced through the heat dissipation fan and the heat dissipation holes, the service life of the switching power supply is prolonged, and the switching power supply has the advantages of being strong in safety and convenient to operate and control.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic diagram of the internal structure of the present invention.
Fig. 4 is a schematic diagram of the connection between the electrical unit and the controller according to the present invention.
Fig. 5 is a schematic structural diagram of the ac input module according to the present invention.
Fig. 6 is an electrical schematic diagram of a rectifier circuit according to the present invention.
Fig. 7 is an electrical schematic diagram of the overvoltage/undervoltage circuit of the present invention.
Fig. 8 is an electrical schematic diagram of the inverter circuit of the present invention.
Fig. 9 is a schematic structural diagram of the over-current detector of the present invention.
Fig. 10 is an electrical schematic diagram of the temperature detection circuit of the present invention.
In the figure, the touch screen comprises a shell 1, a shell 2, a touch screen 3 and a heat dissipation hole.
The specific implementation mode is as follows:
in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
As shown in fig. 1-10, a safety switch power supply for closed-loop control of a water treatment device comprises a housing 1, wherein a touch screen 2 is arranged on the housing 1, and the touch screen 2 is used for setting an output power supply or an output current of the switch power supply; an electric unit and a controller which are matched with the touch screen 2 are arranged in the shell 1, the electric unit comprises an alternating current input module which is electrically connected, the alternating current input module is used for being connected with 220V-380V alternating current commercial power, the alternating current input module is connected with a rectifying circuit, an inverter circuit, a high-frequency transformer, a filter circuit and a direct current output module, and the direct current output module is used for being connected with a load to supply power; the controller is electrically connected with the rectifying circuit through a voltage-undervoltage circuit, the controller is electrically connected with the inverter circuit through an overcurrent detector and a temperature detection circuit, and the controller is electrically connected with the high-frequency transformer through the temperature detection circuit; the overvoltage and undervoltage circuit is used for keeping the voltage inside the switching power supply stable, the overcurrent detector is used for keeping the output current of the switching power supply stable, and the temperature detection circuit is used for adjusting the temperature inside the shell 1.
The shell 1 is also provided with heat dissipation holes 3 uniformly.
The alternating current input module is a three-phase input wiring terminal.
The rectifier circuit comprises a rectifier transformer, wherein the primary side of the rectifier transformer is electrically connected with the three-phase input wiring terminal, and the secondary side of the rectifier transformer is connected with a rectifier bridge and a voltage detection pin.
An air switch and a fuse are arranged between the primary side of the rectifier transformer and the three-phase input connecting terminal.
The overvoltage and undervoltage circuit comprises a first comparator and a second comparator, wherein the negative input end of the second comparator is connected with the voltage detection pin through a second resistor, a first resistor and a variable resistor, and the variable resistor is used for adjusting the threshold value of overvoltage or undervoltage; the positive input end of the second comparator is connected with the positive input end of the first comparator through a third resistor and a fourth resistor which are connected in parallel, and the first comparator and the second comparator are connected with a power supply through a fifth resistor.
The first comparator is an under-voltage comparator, the second comparator is an over-voltage comparator, and the first comparator and the second comparator are both LM339 in model.
The inverter circuit is provided with diodes connected in parallel.
The type of the over-current detector is LM2903, eight pins are arranged on the over-current detector, the first pin is a first output pin, the second pin is a first input negative pin, the third pin is a first input positive pin, the fourth pin is a grounding pin, the fifth pin is a second input positive pin, the sixth pin is a second input negative pin, the seventh pin is a second output pin, and the eighth pin is a power supply pin.
The temperature detection circuit comprises a temperature detection chip, the model of the temperature detection chip is TC4427, eight pins are arranged on the temperature detection chip, the second pin of the temperature detection chip is connected with a sixth resistance connection power supply, the sixth pin of the temperature detection chip is connected with a second capacitor and a third capacitor which are connected in parallel, the fifth pin of the temperature detection chip is connected with an MOS (metal oxide semiconductor) tube through a seventh resistor and an eighth resistor which are connected in parallel, and the MOS tube is connected with a cooling fan which is matched with the cooling holes 3.
The embodiment of the utility model provides an in the embodiment of a water treatment facilities is with closed-loop control's safety switch power's theory of operation does: based on the combined action of each electrical structure and each electrical component, the controller is matched to detect the running state and the running parameters in the switch power supply in real time, and closed-loop control is adopted to realize automatic protection, prevent the load from being burnt and improve the safety of the switch power supply.
In the using process, the switching power supply is placed in an adaptive environment, the working temperature is in the range of-10 ℃ to 40 ℃ under general conditions, and flammable, explosive and strong corrosive media influencing the use of products are not generated in a working place; the alternating current input end of the switching power supply is three-phase alternating current 380VAC, the rated output current of the direct current output end is DC 100A-800A, and the rated output voltage is DC 30V.
After the switching power supply is placed, the alternating current is correctly connected to the switching power supply through the air switch, the direct current output end is tightly connected with a lead of the electroplating equipment through a specified bolt according to the polarity requirement, and whether the connection of the ground wire and the grounding bolt is tight or not needs to be checked before the power is on.
And after the air switch is closed, checking whether the selection direction of the cooling fan is consistent with the identification direction, closing the starting switch, and enabling the switching power supply to enter a working state.
Firstly, selecting a constant current state and a constant voltage state on a touch screen, clicking multi-section parameter setting on the touch screen, setting a voltage value in the constant voltage state, and automatically generating a current value according to ohm's law; setting a current value in a constant current state, and automatically generating a voltage value according to ohm's law; in addition, historical data of the device in the running state can be inquired through the touch screen.
In detail, as shown in fig. 3, the electrical unit in the switching power supply includes an ac input module, a rectifier circuit, an inverter circuit, a high-frequency transformer, a filter circuit, and a dc output module, and is matched with the controller to complete power supply to the load.
In the power supply process, the controller is electrically connected with the rectifying circuit through an overvoltage and undervoltage circuit, as shown in fig. 7, wherein the first comparator is an undervoltage comparator, the second comparator is an overvoltage comparator, RL is a variable resistor, the overvoltage or undervoltage threshold value can be adjusted, and resistors or electrical components connected in parallel are arranged on the peripheries of the first comparator and the second comparator to match the functions of the circuit.
For the temperature detection circuit, as shown in fig. 10, the temperature inside the casing 1 is detected in real time by the temperature detection chip in cooperation with the peripheral MOS transistor and the heat dissipation fan, and the heat dissipation fan is triggered by the MOS transistor to cool the switching power supply, so as to ensure that the inside of the casing 1 is in a proper temperature range.
The embodiment of the utility model provides an in water treatment facilities with closed-loop control's main mode of operation of safety switch power include: a constant-current working mode and a constant-voltage working mode; in a constant-current working mode, when load change or input voltage fluctuation occurs, the switching power supply can keep current stable, and at the moment, the output voltage of the switching power supply changes along with the change of a load; in the constant voltage operation mode, when the change of the load or the fluctuation of the input voltage occurs, the voltage is kept stable, and at the moment, the output current of the switching power supply changes along with the change of the load.
The controller is a protection control circuit and can be matched with other peripheral circuits for use.
In the running process of the water treatment equipment, the safe switch power supply for closed-loop control of the water treatment equipment in the embodiment of the utility model can provide constant-voltage or constant-current power supply for the equipment according to the requirement, thereby ensuring the normal running of the water treatment equipment; generally, the operating voltage grade of the water treatment equipment is common 220V-380V alternating current commercial power, the switching power supply in the scheme can be completely applicable, the phenomenon that the load is burnt due to overlarge voltage cannot occur, and the safety is stronger.
To sum up, the embodiment of the utility model provides an in a water treatment facilities is with closed-loop control's safety switch power supply adopts closed-loop control through inside electric elements and the circuit structure that is connected, promotes switching power supply's security, can select different mode according to user's demand to carry out long-time stable power supply to user's load, compare with current switching power supply, security and reliability are higher, and the practicality is stronger.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (10)
1. The utility model provides a water treatment facilities is with safe switching power supply of closed loop control which characterized in that: the touch screen is arranged on the shell and used for setting an output power supply or an output current of the switching power supply; an electric unit and a controller which are matched with the touch screen are arranged in the shell, the electric unit comprises an alternating current input module which is electrically connected, the alternating current input module is used for being connected with 220V-380V alternating current commercial power, the alternating current input module is connected with a rectifying circuit, an inverter circuit, a high-frequency transformer, a filter circuit and a direct current output module, and the direct current output module is used for being connected with a load to supply power; the controller is electrically connected with the rectifying circuit through a voltage-undervoltage circuit, the controller is electrically connected with the inverter circuit through an overcurrent detector and a temperature detection circuit, and the controller is electrically connected with the high-frequency transformer through the temperature detection circuit; the overvoltage and undervoltage circuit is used for keeping the voltage inside the switching power supply stable, the overcurrent detector is used for keeping the output current of the switching power supply stable, and the temperature detection circuit is used for adjusting the temperature inside the shell.
2. A safety switching power supply for closed loop control of a water treatment apparatus as claimed in claim 1, wherein: the shell is also uniformly provided with heat dissipation holes.
3. A safety switching power supply for closed loop control of a water treatment apparatus as claimed in claim 1, wherein: the alternating current input module is a three-phase input wiring terminal.
4. A safety switching power supply for closed loop control of a water treatment apparatus as claimed in claim 3, wherein: the rectifier circuit comprises a rectifier transformer, wherein the primary side of the rectifier transformer is electrically connected with the three-phase input wiring terminal, and the secondary side of the rectifier transformer is connected with a rectifier bridge and a voltage detection pin.
5. A safety switching power supply for closed-loop control of a water treatment device as claimed in claim 4, wherein: an air switch and a fuse are arranged between the primary side of the rectifier transformer and the three-phase input connecting terminal.
6. A safety switching power supply for closed-loop control of a water treatment device as claimed in claim 4, wherein: the overvoltage and undervoltage circuit comprises a first comparator and a second comparator, wherein the negative input end of the second comparator is connected with the voltage detection pin through a second resistor, a first resistor and a variable resistor, and the variable resistor is used for adjusting the threshold value of overvoltage or undervoltage; the positive input end of the second comparator is connected with the positive input end of the first comparator through a third resistor and a fourth resistor which are connected in parallel, and the first comparator and the second comparator are connected with a power supply through a fifth resistor.
7. A safety switching power supply for closed loop control of a water treatment apparatus as claimed in claim 6, wherein: the first comparator is an under-voltage comparator, the second comparator is an over-voltage comparator, and the first comparator and the second comparator are both LM339 in model.
8. A safety switching power supply for closed loop control of a water treatment apparatus as claimed in claim 1, wherein: the inverter circuit is provided with diodes connected in parallel.
9. A safety switching power supply for closed loop control of a water treatment apparatus as claimed in claim 1, wherein: the type of the over-current detector is LM2903, eight pins are arranged on the over-current detector, and the pins comprise a first pin, a second pin, a third pin, a fourth pin, a fifth pin, a sixth pin, a seventh pin and an eighth pin; the first pin is a first output pin, the second pin is a first input negative pin, the third pin is a first input positive pin, the fourth pin is a grounding pin, the fifth pin is a second input positive pin, the sixth pin is a second input negative pin, the seventh pin is a second output pin, and the eighth pin is a power supply pin.
10. A safety switching power supply for closed loop control of a water treatment apparatus as claimed in claim 2, wherein: the temperature detection circuit comprises a temperature detection chip, the model of the temperature detection chip is TC4427, eight pins are arranged on the temperature detection chip, the second pin of the temperature detection chip is connected with a sixth resistance connection power supply, the sixth pin of the temperature detection chip is connected with a second capacitor and a third capacitor which are connected in parallel, the fifth pin of the temperature detection chip is connected with an MOS (metal oxide semiconductor) tube through a seventh resistor and an eighth resistor which are connected in parallel, and the MOS tube is connected with a cooling fan matched with the cooling holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020283459.8U CN211457003U (en) | 2020-03-10 | 2020-03-10 | Closed-loop control safety switch power supply for water treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020283459.8U CN211457003U (en) | 2020-03-10 | 2020-03-10 | Closed-loop control safety switch power supply for water treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211457003U true CN211457003U (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020283459.8U Active CN211457003U (en) | 2020-03-10 | 2020-03-10 | Closed-loop control safety switch power supply for water treatment equipment |
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| Country | Link |
|---|---|
| CN (1) | CN211457003U (en) |
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2020
- 2020-03-10 CN CN202020283459.8U patent/CN211457003U/en active Active
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