CN219304461U - Ship electrical control cabinet with overload protection control function - Google Patents
Ship electrical control cabinet with overload protection control function Download PDFInfo
- Publication number
- CN219304461U CN219304461U CN202320211554.0U CN202320211554U CN219304461U CN 219304461 U CN219304461 U CN 219304461U CN 202320211554 U CN202320211554 U CN 202320211554U CN 219304461 U CN219304461 U CN 219304461U
- Authority
- CN
- China
- Prior art keywords
- module
- load
- resistor
- overload
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a ship electrical control cabinet with an overload protection control function, which relates to the field of control cabinets, and comprises: the control cabinet power supply module is used for introducing 220V alternating current from the control cabinet and outputting the 220V alternating current to the step-down rectifying and filtering module and the load working module; the voltage reduction rectifying and filtering module is used for converting 220V alternating current into direct current and supplying power to the fault alarm module and the overload control module, and compared with the prior art, the voltage reduction rectifying and filtering module has the beneficial effects that: the load current sampling module is used for sampling the current flowing through the load and converting the current into a voltage signal, the overload control module is used for judging whether the load current is overlarge, if so, the overload control module is used for judging that the load is overloaded and disconnecting the power supply line of the load, and meanwhile, the fault alarm module is arranged for detecting whether the load current sampling module works or not, so that the overload condition of the load and the line burnout are avoided when the load current sampling module breaks down.
Description
Technical Field
The utility model relates to the field of control cabinets, in particular to a ship electrical control cabinet with an overload protection control function.
Background
The ship control cabinet is characterized in that switching equipment, measuring instruments, protection appliances and auxiliary equipment are assembled in or on a closed or semi-closed metal cabinet according to the electric wiring requirement, the arrangement of the ship control cabinet meets the requirement of normal operation of a ship power system, the ship control cabinet is convenient to overhaul, and the safety of personnel and surrounding equipment is not endangered.
Because the output voltage of the control cabinet is supplied to the electric device, when the electric device is overloaded, the circuit is easy to damage, and improvement is needed.
Disclosure of Invention
The utility model aims to provide a ship electrical control cabinet with an overload protection control function, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an electrical control cabinet for a ship with overload protection control function, comprising:
the control cabinet power supply module is used for introducing 220V alternating current from the control cabinet and outputting the 220V alternating current to the step-down rectifying and filtering module and the load working module;
the step-down rectifying and filtering module is used for converting 220V alternating current into direct current and supplying power for the fault alarm module and the overload control module;
the load working module is used for loading power-on working;
the load current sampling module is used for sampling the working current of the load, converting the working current into a voltage signal and outputting the voltage signal to the overload control module as a sampling voltage;
the overload control module is used for judging whether the load working module is overloaded according to whether the sampling voltage exceeds a threshold value or not, and disconnecting the load working module when the load working module is overloaded;
the fault alarm module is used for detecting whether the sampling voltage of the load current sampling module exists or not, and alarming when the sampling voltage does not exist;
the control cabinet power module is connected with the buck rectifying and filtering module and the load working module, the buck rectifying and filtering module is connected with the fault alarming module and the overload control module, the load current sampling module is connected with the load working module, the overload control module and the fault alarming module, and the overload control module is connected with the load working module.
As still further aspects of the utility model: the load working module comprises a switch S21 and a switch S22, the control cabinet power module comprises a live wire L and a null wire N, one end of the switch S21 is connected with the live wire L, one end of the switch S22 is connected with the null wire N, the other end of the switch S21 is connected with one end of a load X, and the other end of the load X is connected with the other end of the switch S22.
As still further aspects of the utility model: the load current sampling module comprises a current transformer Y, a diode D4, a capacitor C4, a resistor R4 and a resistor R3, wherein one end of the current transformer Y is connected with the anode of the diode D4, the other end of the current transformer Y is connected with one end of the capacitor C4, the cathode of the diode D4 is connected with the other end of the capacitor C4 and one end of the resistor R4, the other end of the resistor R4 is connected with one end of the resistor R3, the overload control module and the fault alarm module, and the other end of the resistor R3 is grounded.
As still further aspects of the utility model: the overload control module comprises a resistor R2, a diode D1, an amplifier U1, a diode D2, a silicon controlled rectifier Z1, a relay J2 and a diode D3, wherein one end of the resistor R2 is connected with the anode of the diode D2, the buck rectifying and filtering module, the other end of the resistor R2 is connected with the cathode of the diode D1 and the inverting end of the amplifier U1, the anode of the diode D1 is grounded, the non-inverting end of the amplifier U1 is connected with the load current sampling module, the output end of the amplifier U1 is connected with the control electrode of the silicon controlled rectifier Z1, the anode of the silicon controlled rectifier Z1 is connected with the cathode of the diode D2, the cathode of the silicon controlled rectifier Z1 is connected with one end of the relay J2, the anode of the diode D3 is grounded, and the other end of the relay J2 is grounded.
As still further aspects of the utility model: the fault alarm module comprises a MOS tube V1, a buzzer SPEAKER, a capacitor C3 and a resistor R5, wherein one end of the resistor R5 is connected with the load current sampling module, the other end of the resistor R5 is connected with one end of the capacitor C3 and the G pole of the MOS tube V1, the D pole of the MOS tube V1 is grounded through the buzzer SPEAKER, and the S pole of the MOS tube V1 is connected with the step-down rectifying and filtering module.
Compared with the prior art, the utility model has the beneficial effects that: the load current sampling module is used for sampling the current flowing through the load and converting the current into a voltage signal, the overload control module is used for judging whether the load current is overlarge, if so, the overload control module is used for judging that the load is overloaded and disconnecting the power supply line of the load, and meanwhile, the fault alarm module is arranged for detecting whether the load current sampling module works or not, so that the overload condition of the load and the line burnout are avoided when the load current sampling module breaks down.
Drawings
Fig. 1 is a schematic diagram of an electrical control cabinet for a ship with overload protection control function.
Fig. 2 is a circuit diagram of a ship electrical control cabinet with overload protection control function.
Fig. 3 is a pin diagram of the amplifier LM 358.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Referring to fig. 1, a ship electrical control cabinet with overload protection control function includes:
the control cabinet power supply module is used for introducing 220V alternating current from the control cabinet and outputting the 220V alternating current to the step-down rectifying and filtering module and the load working module;
the step-down rectifying and filtering module is used for converting 220V alternating current into direct current and supplying power for the fault alarm module and the overload control module;
the load working module is used for loading power-on working;
the load current sampling module is used for sampling the working current of the load, converting the working current into a voltage signal and outputting the voltage signal to the overload control module as a sampling voltage;
the overload control module is used for judging whether the load working module is overloaded according to whether the sampling voltage exceeds a threshold value or not, and disconnecting the load working module when the load working module is overloaded;
the fault alarm module is used for detecting whether the sampling voltage of the load current sampling module exists or not, and alarming when the sampling voltage does not exist;
the control cabinet power module is connected with the buck rectifying and filtering module and the load working module, the buck rectifying and filtering module is connected with the fault alarming module and the overload control module, the load current sampling module is connected with the load working module, the overload control module and the fault alarming module, and the overload control module is connected with the load working module.
In particular embodiments: the output voltage of the power module of the control cabinet meets the requirements of electric devices, the voltage-reducing rectifying and filtering module reduces the voltage of 220V alternating current through the transformer W, the alternating current-direct current conversion is completed through the rectifier T, the filtering processing is completed through the capacitor C1, the capacitor C2 and the inductor L1, the switch S1 is a circuit main switch and is in a normally closed state, and the fault alarming module and the overload control module are closed again after the switch is opened to restart working.
In this embodiment: referring to fig. 2, the load working module includes a switch S21 and a switch S22, the control cabinet power module includes a live wire L and a neutral wire N, one end of the switch S21 is connected with the live wire L, one end of the switch S22 is connected with the neutral wire N, the other end of the switch S21 is connected with one end of a load X, and the other end of the load X is connected with the other end of the switch S22.
The switches S21 and S22 are normally closed, the load X is powered on, and when the relay J2 works, the switches S21 and S22 spring off, and the load X does not work. The load X represents a plurality of parallel-connected electric devices, the more the electric devices are, the larger the sum of current flowing through the load X is, the larger the consumed power is, and when the consumed power exceeds the output power of the power module of the control cabinet, the load X is in an overload condition.
In this embodiment: referring to fig. 2, the load current sampling module includes a current transformer Y, a diode D4, a capacitor C4, a resistor R4, and a resistor R3, wherein one end of the current transformer Y is connected to the positive electrode of the diode D4, the other end of the current transformer Y is connected to one end of the capacitor C4, the negative electrode of the diode D4 is connected to the other end of the capacitor C4 and one end of the resistor R4, the other end of the resistor R4 is connected to one end of the resistor R3, the overload control module, and the fault alarm module, and the other end of the resistor R3 is grounded.
The circuit transformer Y senses current on the load X, outputs direct current after rectification and filtration by the diode D4 and the capacitor C4, changes the direct current into voltage signals by the resistor R3 and the resistor R4, and outputs the voltage signals on the resistor R3 as sampling voltage to the overload control module and the fault alarm module.
In this embodiment: referring to fig. 2 and 3, the overload control module includes a resistor R2, a diode D1, an amplifier U1, a diode D2, a thyristor Z1, a relay J2, and a diode D3, wherein one end of the resistor R2 is connected to the positive electrode of the diode D2, the buck rectifying and filtering module, the other end of the resistor R2 is connected to the negative electrode of the diode D1, the opposite end of the amplifier U1, the positive electrode of the diode D1 is grounded, the same end of the amplifier U1 is connected to the load current sampling module, the output end of the amplifier U1 is connected to the control electrode of the thyristor Z1, the positive electrode of the thyristor Z1 is connected to the negative electrode of the diode D2, the negative electrode of the thyristor Z1 is connected to the negative electrode of the diode D3, one end of the relay J2, the positive electrode of the diode D3 is grounded, and the other end of the relay J2 is grounded.
The model of the amplifier U1 can be LM358, when the load X is in overload condition, the current induced by the circuit transformer Y exceeds a threshold value, and the sampling voltage is overlarge, so that the voltage of the in-phase end of the amplifier U1 is larger than the voltage of the voltage stabilizing diode D1 at the opposite phase end, the amplifier U1 outputs high level, the silicon controlled rectifier Z1 is triggered to be conducted, the relay J2 is powered on, and the switches S21 and S22 are controlled to be disconnected, so that line burning caused by overload is avoided. Diode D2 acts as a light emitting diode indicating overload.
In this embodiment: referring to fig. 2, the fault alarm module includes a MOS tube V1, a buzzer peak, a capacitor C3, and a resistor R5, wherein one end of the resistor R5 is connected to the load current sampling module, the other end of the resistor R5 is connected to one end of the capacitor C3, a G pole of the MOS tube V1, a D pole of the MOS tube V1 is grounded through the buzzer peak, and an S pole of the MOS tube V1 is connected to the buck rectifying and filtering module.
MOS pipe V1 is the PMOS pipe, switch on when the G utmost point voltage is low level, when load current sampling module normally works, output high level, charge for electric capacity C3 through resistance R5, electric capacity C3 charges and makes the G extremely high level of MOS pipe V1, MOS pipe V1 cuts off, under load current sampling module because current transformer Y trouble, or under the condition such as circuit disconnection, make load current sampling module not in output voltage, at this moment MOS pipe V1 switches on, buzzer SPEAKER gets the electricity to switch on, the warning of ringing, in time remind the staff, avoid overload, because load current sampling module trouble can't trigger overload control module work, cause the circuit to burn out.
The working principle of the utility model is as follows: the control cabinet power module introduces 220V alternating current from the control cabinet, outputs the 220V alternating current to the buck rectifying and filtering module and the load working module, the buck rectifying and filtering module converts the 220V alternating current into direct current, the fault alarming module and the overload control module supply power, the load working module is loaded to work electrically, the load current sampling module samples working current of the load and converts the working current into a voltage signal, the sampling voltage is output to the overload control module as sampling voltage, the overload control module judges whether the load working module is overloaded or not according to whether the sampling voltage exceeds a threshold value, the load working module is disconnected during overload, and the fault alarming module detects whether the sampling voltage of the load current sampling module exists or not and sounds to alarm when the sampling voltage does not exist.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a boats and ships electrical control cabinet of overload protection control function which characterized in that:
this overload protection control function's boats and ships electrical control cabinet includes:
the control cabinet power supply module is used for introducing 220V alternating current from the control cabinet and outputting the 220V alternating current to the step-down rectifying and filtering module and the load working module;
the step-down rectifying and filtering module is used for converting 220V alternating current into direct current and supplying power for the fault alarm module and the overload control module;
the load working module is used for loading power-on working;
the load current sampling module is used for sampling the working current of the load, converting the working current into a voltage signal and outputting the voltage signal to the overload control module as a sampling voltage;
the overload control module is used for judging whether the load working module is overloaded according to whether the sampling voltage exceeds a threshold value or not, and disconnecting the load working module when the load working module is overloaded;
the fault alarm module is used for detecting whether the sampling voltage of the load current sampling module exists or not, and alarming when the sampling voltage does not exist;
the control cabinet power module is connected with the buck rectifying and filtering module and the load working module, the buck rectifying and filtering module is connected with the fault alarming module and the overload control module, the load current sampling module is connected with the load working module, the overload control module and the fault alarming module, and the overload control module is connected with the load working module.
2. The ship electrical control cabinet with the overload protection control function according to claim 1, wherein the load working module comprises a switch S21 and a switch S22, the control cabinet power supply module comprises a live wire L and a neutral wire N, one end of the switch S21 is connected with the live wire L, one end of the switch S22 is connected with the neutral wire N, the other end of the switch S21 is connected with one end of a load X, and the other end of the load X is connected with the other end of the switch S22.
3. The ship electrical control cabinet with the overload protection control function according to claim 2, wherein the load current sampling module comprises a current transformer Y, a diode D4, a capacitor C4, a resistor R4 and a resistor R3, one end of the current transformer Y is connected with the positive electrode of the diode D4, the other end of the current transformer Y is connected with one end of the capacitor C4, the negative electrode of the diode D4 is connected with the other end of the capacitor C4 and one end of the resistor R4, the other end of the resistor R4 is connected with one end of the resistor R3, the overload control module and the fault alarm module, and the other end of the resistor R3 is grounded.
4. The ship electrical control cabinet with the overload protection control function according to claim 1, wherein the overload control module comprises a resistor R2, a diode D1, an amplifier U1, a diode D2, a silicon controlled rectifier Z1, a relay J2 and a diode D3, one end of the resistor R2 is connected with the positive electrode of the diode D2, a buck rectifying and filtering module, the other end of the resistor R2 is connected with the negative electrode of the diode D1 and the reverse end of the amplifier U1, the positive electrode of the diode D1 is grounded, the same phase end of the amplifier U1 is connected with a load current sampling module, the output end of the amplifier U1 is connected with the control electrode of the silicon controlled rectifier Z1, the positive electrode of the silicon controlled rectifier Z1 is connected with the negative electrode of the diode D2, the negative electrode of the silicon controlled rectifier Z1 is connected with the negative electrode of the diode D3, one end of the relay J2, the positive electrode of the diode D3 is grounded, and the other end of the relay J2 is grounded.
5. The ship electrical control cabinet with the overload protection control function according to claim 1, wherein the fault alarm module comprises a MOS tube V1, a buzzer SPEAKER, a capacitor C3 and a resistor R5, one end of the resistor R5 is connected with the load current sampling module, the other end of the resistor R5 is connected with one end of the capacitor C3 and a pole G of the MOS tube V1, a pole D of the MOS tube V1 is grounded through the buzzer SPEAKER, and a pole S of the MOS tube V1 is connected with the step-down rectifying and filtering module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320211554.0U CN219304461U (en) | 2023-02-14 | 2023-02-14 | Ship electrical control cabinet with overload protection control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320211554.0U CN219304461U (en) | 2023-02-14 | 2023-02-14 | Ship electrical control cabinet with overload protection control function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219304461U true CN219304461U (en) | 2023-07-04 |
Family
ID=86985001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320211554.0U Active CN219304461U (en) | 2023-02-14 | 2023-02-14 | Ship electrical control cabinet with overload protection control function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219304461U (en) |
-
2023
- 2023-02-14 CN CN202320211554.0U patent/CN219304461U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116094143B (en) | Power voltage detecting system | |
| CN204179660U (en) | Oil drilling spot sensor isolated from power protective device | |
| CN101976815B (en) | Loaded multifunctional protection circuit | |
| CN106059048A (en) | Electric connection accessory with direct current portable power source protection and instantaneous high-power output | |
| CN219304461U (en) | Ship electrical control cabinet with overload protection control function | |
| CN201022069Y (en) | Breaker with miss and under voltage buckle release and electronic over current buckle release | |
| CN205846840U (en) | Electric connection accessory with direct current portable power source protection and instantaneous high-power output | |
| CN201015172Y (en) | Suspending type induction power source | |
| CN101411929A (en) | Double-wire system special module | |
| CN110635447A (en) | Off-port control unit, electric leakage module and safe direct current Internet of things protection switch | |
| CN106972462B (en) | Low-voltage distribution cabinet neutral line breakage protection device | |
| CN115207877A (en) | Automatic power supply switching circuit of electrical equipment | |
| CN211701848U (en) | Novel combined DC direct current conversion power supply | |
| CN207782410U (en) | Ac-dc power supply circuit | |
| CN111092415A (en) | Short-circuit protection circuit of 12V300W DC power converter | |
| CN219164221U (en) | Electronic load protection circuit | |
| CN201118192Y (en) | Controller for limiting power utilization | |
| CN205158000U (en) | Control system recloses | |
| CN2338898Y (en) | Comprehensive protection arrangement for safety use of electricity | |
| CN214543780U (en) | Embedded switching power supply for 5G communication | |
| CN219980426U (en) | DC protection power supply system | |
| CN214674930U (en) | High-power direct-current power supply circuit | |
| CN117595458B (en) | Program-controlled power supply circuit with charging protection function | |
| CN2165557Y (en) | Multifunctional protector for motor | |
| CN219659425U (en) | Power supply module for electrical equipment and electrical equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |