CN221103011U - Power supply circuit for drying chamber electric box - Google Patents
Power supply circuit for drying chamber electric box Download PDFInfo
- Publication number
- CN221103011U CN221103011U CN202323030979.0U CN202323030979U CN221103011U CN 221103011 U CN221103011 U CN 221103011U CN 202323030979 U CN202323030979 U CN 202323030979U CN 221103011 U CN221103011 U CN 221103011U
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- power supply
- voltage power
- output end
- phase line
- electrically connected
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- 238000001035 drying Methods 0.000 title claims abstract description 22
- 230000001012 protector Effects 0.000 claims abstract description 20
- 238000000819 phase cycle Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model provides a power supply circuit for an electric box of a drying chamber, which comprises a high-voltage power supply for supplying 380V electric energy and a low-voltage power supply for supplying 24V electric energy, wherein the output end of the high-voltage power supply is electrically connected with the power supply circuit for supplying power, and the output end of the low-voltage power supply is electrically connected with the power supply circuit for supplying power; the high-voltage power supply circuit comprises a first alternating current contactor and a second alternating current contactor, the high-voltage power supply circuit comprises a first leakage switch for outputting a three-phase line L1, a three-phase line L2, a three-phase line L3 and a zero line N, the three-phase line L1, the three-phase line L2 and the three-phase line L3 of the output end of the first leakage switch are electrically connected with a phase sequence protector, and the output end of the phase sequence protector is electrically connected with the first alternating current contactor through a first relay and a second relay in sequence. The utility model can safely and accurately supply power to the drying equipment.
Description
Technical Field
The utility model relates to the technical field of power supply boxes, in particular to a power supply circuit for a drying chamber power supply box.
Background
Crops such as grains or vegetables are harvested, and the crops are required to be dried in time in order to improve the storage time of the crops and avoid full-seat non-spoilage. Along with the development of science and technology and land planning, a large amount of crops are planted uniformly, and excessive moisture in the crops is removed by using a drying chamber, so that if the crops are not dried in time, a large amount of crops are decomposed. The electric box for distributing power to the drying chamber is needed, and the safety and accuracy of the operation of the drying equipment are improved while the electric box can normally supply power to the drying equipment in the drying chamber.
Disclosure of utility model
In view of the above, the present utility model aims to provide a power supply circuit for an electric box of a drying chamber, which can safely and accurately supply power to drying equipment.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The power supply circuit for the electric box of the drying chamber comprises a high-voltage power supply for supplying 380V electric energy and a low-voltage power supply for supplying 24V electric energy, wherein the output end of the high-voltage power supply is electrically connected with the high-voltage power supply circuit for supplying power, and the output end of the low-voltage power supply is electrically connected with the low-voltage power supply circuit;
The high-voltage power supply circuit comprises a first alternating current contactor and a second alternating current contactor, the high-voltage power supply circuit comprises a first leakage switch for outputting a three-phase line L1, a three-phase line L2, a three-phase line L3 and a zero line N, the three-phase line L1, the three-phase line L2 and the three-phase line L3 of the output end of the first leakage switch are electrically connected with a phase sequence protector, and the output end of the phase sequence protector is electrically connected with the first alternating current contactor through a first relay and a second relay in sequence.
Further, the output ends of the first alternating current contactor and the second alternating current contactor are respectively and electrically connected with a first interface used for being electrically connected with the heating equipment and a second interface used for being electrically connected with the motor, and a motor protector is arranged between the second alternating current contactor and the second interface in series.
Further, the high-voltage power supply comprises a second leakage switch for providing a three-phase line and a zero line, the output end of the second leakage switch is electrically connected with the power supply end of the thermometer, the thermometer is connected with a temperature sensor for monitoring the temperature of the electric box, and the output end of the thermometer is in data intercommunication with the control end of the low-voltage power supply.
Further, the output end of the low-voltage power supply is electrically connected with a delay relay for supplying power to the control module, and the output end of the delay relay is electrically connected with a power-off delay relay for supplying power to the control module.
Further, the control module is in data intercommunication with the temperature and humidity sensor and three electric meters respectively, and the three electric meters are used for monitoring currents on the three-phase line L1, the three-phase line L2 and the three-phase line L3.
Further, a current transformer is respectively arranged on the three-phase line L1, the three-phase line L2 and the three-phase line L3 of the output end of the first leakage switch, and the output end of the current transformer is in data intercommunication with three electric meters.
The utility model has the advantages and positive effects that:
through setting up first relay and second relay, when phase sequence protector false triggering gives transient feedback information, the interference signal is consumed to first relay and the second relay that switch on in proper order, and first relay and second relay output signal are more stable simultaneously, can effectually improve the accuracy and the stability of electronic box power supply, and safe and accurate is supplied power for drying equipment.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
fig. 1 is an overall configuration diagram of a power supply circuit for a drying chamber electric box of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model provides a power supply circuit for a drying chamber electric box, which is shown in fig. 1 and comprises a high-voltage power supply for supplying 380V electric energy and a low-voltage power supply for supplying 24V electric energy, wherein the high-voltage power supply is used for supplying power to the high-voltage power supply circuit, and the low-voltage power supply is used for supplying power to a control module through the low-voltage power supply circuit.
The high-voltage power supply circuit comprises a first interface and a second interface, wherein the first interface is electrically connected with the heating equipment, and the second interface is used for being electrically connected with the motor. The control module is used for controlling the heating equipment and the motor to act so as to adjust the temperature and the humidity in the drying chamber.
The high voltage power supply includes a first leakage switch that outputs three-phase power, which may be NXBLE-125 in type. The output end of the first electric leakage switch comprises a three-phase line L1, a three-phase line L2, a three-phase line L3 and a zero line N. The high-voltage power supply circuit comprises a first alternating-current contactor and a second alternating-current contactor, and the model of the high-voltage power supply circuit can be NC3-30-30-00. The output end of the first alternating current contactor is electrically connected with the first interface, and the output end of the second alternating current contactor is electrically connected with the second interface. The embodiment is as follows: the input end of the first alternating current contactor is electrically connected with a zero line N and a three-phase line L1. The input end of the second alternating current contactor is electrically connected with the three-phase line L1, the three-phase line L2 and the three-phase line L3.
In order to improve the safety of the motor during operation, a motor protector is arranged between the second alternating current contactor and the second interface in series, and the motor protector can give an alarm or protect when overload, phase failure, locked rotor, short circuit, overvoltage, undervoltage, electric leakage, three-phase imbalance, overheat, bearing abrasion and stator and rotor eccentricity occur to the motor.
In order to improve the safety of the heating equipment, the output end of the first leakage switch is electrically connected with a phase sequence protector, and the model of the phase sequence protector can be HHD5-E. The input end of the phase sequence protector is electrically connected with the three-wire line, the output end of the phase sequence protector is electrically connected with the control end of the first alternating current contactor, and when the phase sequence protector detects that the phase sequence is abnormal, the first alternating current contactor is controlled to be disconnected, and the first interface stops supplying power.
In order to avoid external interference and false triggering of the phase sequence protector, the first alternating current contactor is disconnected by mistake. A first relay and a second relay are sequentially arranged between the phase sequence protector and the first alternating current contactor in series, and the types of the two relays can be JQX13F. After the phase sequence protector is triggered, the first relay is conducted, the output end of the first relay conducts the second relay, the output end of the second relay stops the operation of the first alternating current contactor, and the probability of false triggering of the phase sequence protector is reduced while the stability of a trigger signal is improved.
The high-voltage power supply comprises a first leakage switch for outputting 220V power, and the output end of the first leakage switch comprises a three-phase line and a zero line. The embodiment is as follows: three phase line L3 and neutral line N. The output end of the first electric leakage switch is electrically connected with a thermometer to supply power for the thermometer. The signal receiving end of the thermometer is electrically connected with a temperature sensor, and the temperature sensor is used for acquiring the ambient temperature of the electric box and displaying a temperature value by the thermometer.
The low-voltage power supply circuit comprises a low-voltage power supply for supplying 24V electric energy, and the output end of the thermometer is electrically connected with the control end of the low-voltage power supply and used for controlling whether the low-voltage power supply supplies power or not. The output end of the low-voltage power supply is electrically connected with a delay relay, and the output end of the delay relay is electrically connected with a power-off delay relay. The model of the delay relay can be HHS6R, and the model of the power-off delay relay can be JSZ3F. When the power is normally supplied to the low-voltage power supply, the delay relay delays the conduction and outputs 24V electric energy, and meanwhile, the power-off delay relay is charged. When the power supply is powered off, the delay relay is disconnected, and the power-off delay relay outputs 24V electric energy, so that the control module is powered off in a delay manner, and the buffer time for the system to operate is provided.
When the thermometer is used, the thermometer is used for closing the low-voltage power supply (stopping power supply) when the temperature value is higher than a preset value, so that the probability of circuit damage in the low-voltage power supply is reduced.
And the three-phase line L1, the three-phase line L2 and the three-phase line L3 of the output end of the first leakage switch are respectively provided with a current transformer 1, a current transformer 2 and a current transformer 3, and the output ends of the current transformer 1, the current transformer 2 and the current transformer 3 are electrically connected with the input ends of three electric meters. The signal of the current transformer is CTK-38. The output ends of the three electric meters are electrically connected with a control module, the control module is in data intercommunication with the temperature and humidity sensor, receives temperature and humidity data in the drying chamber, and controls the heating equipment and the motor to act according to the temperature and humidity data and the power supply data.
The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by this patent.
Claims (4)
1. The power supply circuit for the electric box of the drying chamber is characterized by comprising a high-voltage power supply for supplying 380V electric energy and a low-voltage power supply for supplying 24V electric energy, wherein the output end of the high-voltage power supply is electrically connected with the high-voltage power supply circuit for supplying power, and the output end of the low-voltage power supply is electrically connected with the low-voltage power supply circuit;
The high-voltage power supply circuit comprises a first alternating-current contactor and a second alternating-current contactor, the high-voltage power supply comprises a first leakage switch for outputting a three-phase line L1, a three-phase line L2, a three-phase line L3 and a zero line N, the three-phase line L1, the three-phase line L2 and the three-phase line L3 at the output end of the first leakage switch are electrically connected with a phase sequence protector, and the output end of the phase sequence protector is electrically connected with the first alternating-current contactor through a first relay and a second relay in sequence;
The high-voltage power supply comprises a second leakage switch for providing a three-phase line and a zero line, wherein the output end of the second leakage switch is electrically connected with the power supply end of a thermometer, the thermometer is connected with a temperature sensor for monitoring the temperature of the electric box, and the output end of the thermometer is in data intercommunication with the control end of the low-voltage power supply;
The output end of the low-voltage power supply is electrically connected with a delay relay for supplying power to the control module, and the output end of the delay relay is electrically connected with a power-off delay relay for supplying power to the control module.
2. The power supply circuit for a drying chamber electric box according to claim 1, wherein the output ends of the first ac contactor and the second ac contactor are respectively electrically connected with a first interface for electrically connecting with a heating device and a second interface for electrically connecting with a motor, and a motor protector is arranged in series between the second ac contactor and the second interface.
3. The power supply circuit for an electric box of a drying room according to claim 1, wherein the control module is in data communication with a temperature and humidity sensor and three electric meters respectively, and the three electric meters are used for monitoring currents on three phase lines L1, L2 and L3.
4. The power supply circuit for a drying room electric box according to claim 3, wherein a current transformer is respectively arranged on a three-phase line L1, a three-phase line L2 and a three-phase line L3 of the output end of the first electric leakage switch, and the output end of the current transformer is in data intercommunication with three electric meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323030979.0U CN221103011U (en) | 2023-11-09 | 2023-11-09 | Power supply circuit for drying chamber electric box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323030979.0U CN221103011U (en) | 2023-11-09 | 2023-11-09 | Power supply circuit for drying chamber electric box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221103011U true CN221103011U (en) | 2024-06-07 |
Family
ID=91313420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323030979.0U Active CN221103011U (en) | 2023-11-09 | 2023-11-09 | Power supply circuit for drying chamber electric box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221103011U (en) |
-
2023
- 2023-11-09 CN CN202323030979.0U patent/CN221103011U/en active Active
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