CN211239308U - Solid heat storage type electric heating device group operation overpower protection device - Google Patents
Solid heat storage type electric heating device group operation overpower protection device Download PDFInfo
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- CN211239308U CN211239308U CN202020207347.4U CN202020207347U CN211239308U CN 211239308 U CN211239308 U CN 211239308U CN 202020207347 U CN202020207347 U CN 202020207347U CN 211239308 U CN211239308 U CN 211239308U
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Abstract
The utility model discloses a solid heat accumulation type electric heater unit group moves super power protection device, occupy acquisition unit, constant current source adder, settlement power value generator, comparator, output control unit including the equipment power. The device power occupation acquisition units are multiple and respectively acquire power occupation signals of corresponding devices and transmit the power occupation signals to the constant current source adder, the constant current source adder is further connected with a constant current source, the constant current source adder outputs the total occupancy rate obtained through addition to the comparator, the comparator compares the received total occupancy power value with the protection value generated by the reserved power value generator, and the final result is connected to the output control unit. The utility model discloses a complete hardware protection circuit, the reliability is high, ensures not to exceed the power consumption power that user power distribution system reserved, guarantees to use electrical safety.
Description
Technical Field
The utility model relates to an electrical protection technical field specifically is a solid heat accumulation type electric heater unit group operation overpower protection device.
Background
The solid heat storage type electric heating device is a system which converts valley electricity or electric energy with other properties into heat energy by using a specific device in a proper mode, stores the heat energy by using a certain heat storage material and releases the heat energy for utilization when needed.
When a high-power solid heat storage equipment group with the voltage of 10kV or more runs, the total power of the equipment is sometimes larger than the maximum power reserved by a user power distribution system, and generally, the equipment is started in turn in a time-sharing heating mode by adopting modes such as upper computer control and the like, so that the purpose that the used power does not exceed the reserved power of the user power distribution system is achieved. The upper computer generally relates to communication and complex program operation, is easy to break down, and needs a protection mode with better reliability in order to ensure that the power is not over-limit when faults such as operation errors and the like occur to the upper computer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solid heat accumulation type electric heater unit group moves super power protection device to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a solid heat accumulation type electric heating device group operation overpower protection device, occupies acquisition element, constant current source adder, reserve power value generator, comparator, output control unit including the equipment power, the equipment power occupies acquisition element has a plurality ofly, gathers the power occupation signal of corresponding equipment respectively and transmits for the constant current source adder, still is connected with a constant current source on the constant current source adder, and the constant current source adder will export the total occupancy that obtains through addition to the comparator, will receive on the comparator total occupancy power value and reserve the protection value that power value generator generated and do the comparison processing, and the final result is connected to output control unit, control unit has a plurality ofly, and the heating that corresponds equipment respectively enables the end, plays the guard action.
As a further aspect of the present invention: the comparator is a voltage comparator.
As a further aspect of the present invention: the comparator has a self-locking function, and once the protection is triggered, the comparator can be self-locked to keep output.
As a further aspect of the present invention: the protection value generated by the reserved power value generator can be set.
As a further aspect of the present invention: the output of the adder is connected with an occupied power display.
As a further aspect of the present invention: the output end of the set power value generator is connected with a reserved power display.
As a further aspect of the present invention: the output end of the comparator is also connected with an alarm prompt module.
As a further aspect of the present invention: the system also comprises a power supply module for supplying power to each module.
Compared with the prior art, the beneficial effects of the utility model are that: the protection device is simple and reliable, and plays a role in ensuring redundancy. And reliable protection is provided when faults such as normal operation errors of an over-power protection mode exist.
Drawings
FIG. 1 is an overall schematic block diagram of the present invention;
FIG. 2 is a schematic diagram of a summing circuit;
fig. 3 is a schematic diagram of the circuit operation of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a solid heat storage type electric heating device group operation overpower protection device comprises a plurality of device power occupation acquisition units, a constant current source adder, a set power value generator, a comparator and an output control unit, and is characterized in that the device power occupation acquisition units are used for respectively acquiring power occupation signals of corresponding devices and transmitting the power occupation signals to the constant current source adder, the constant current source adder is connected with a constant current source, the constant current source adder outputs the total occupancy rate obtained through addition to the comparator, the comparator compares the received total occupancy power value with a protection value generated by the set power value generator, and the final result is connected to the output control unit, and the control units are used for respectively corresponding to heating enabling ends of the devices to play a protection role.
The adder principle as shown in figure 2,
a constant current passes through the resistor, the voltage across the resistor is proportional to the resistance value, the voltage represents the size of the resistor, if the resistance value corresponds to the electric power of the equipment, the voltage represents the electric power of the equipment, so that the sum of the voltages is the sum of the electric power, and the addition calculation is completed by a hardware circuit.
The detailed principle of the present embodiment is shown in fig. 3, and the present embodiment is applicable to six devices.
In the figure, the constant current source is a U1 chip, generates a constant current of 20mA, and corrects the magnitude of the constant current through R8;
power occupation signals sent by the six devices are respectively connected to K1-K6, K1-K6 are switched on to indicate that the power of the corresponding device is not occupied, and the power is switched off to indicate that the corresponding device is occupied. If the K1 is turned off, it indicates that the 1# device is in a power-occupied state, and the current generated by the constant current source passes through the resistor R1, the voltage across the resistor R1 is 5V, which can indicate that the occupied power of the 1# device is 5MW, and the remaining power is occupied similarly, and the total voltage represents the total occupied power. This voltage is connected to a digital display U4 indicating the total power draw at that time.
The potentiometer R9 generates a voltage representing the reserved power level, which is connected to a digital display U3 indicating the reserved power level at that time.
When the voltage of the non-inverting input end is larger than that of the inverting input end, U2A outputs high voltage, Q1 is conducted, K7-K12 are attracted, contacts are disconnected, and the heating enable end of the equipment 1# -6# is disconnected and cannot be heated.
Q1 is conducted, X2 and LS1 are enabled to work at the same time, and sound and light alarm is given out.
Q1 is conducted, and the reverse input end of U2A is enabled to be low voltage through D1 and S1, so that U2A self-locking is formed, and S1 is manually pressed down, and self-locking can be released.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a solid heat accumulation type electric heating device group operation overpower protection device, includes that equipment power occupies acquisition element, constant current source adder, reserve power value generator, comparator and output control unit, its characterized in that, equipment power occupies acquisition element has a plurality ofly, gathers the power occupation signal of corresponding equipment respectively and transmits for constant current source adder, still is connected with a constant current source on the constant current source adder, and the total occupancy that the constant current source adder will obtain through the addition is exported the comparator, will receive total occupancy power value and the protection value that reserve power value generator produced on the comparator and do the comparison processing, and the final result is connected to output control unit, control unit has a plurality ofly, the heating that corresponds equipment respectively enables the end.
2. The group-operation overpower protection device of claim 1, wherein the comparator is a voltage comparator.
3. The group operating over-power protection device of claim 2, wherein the comparator has a self-locking function.
4. The group operating over-power protection device of claim 1, wherein the protection value generated by the reserve power generator is settable.
5. The group operating over-power protection device of claim 1, wherein the output of the adder is connected to an occupied power display.
6. The device for protecting the operation overpower of the solid heat storage type electric heating device group according to claim 1, wherein the output end of the reserved power value generator is connected with a reserved power display.
7. The device for protecting the operation of the solid heat storage type electric heating device group from the overpower of claim 1, wherein an alarm prompting module is further connected to an output end of the comparator.
8. The group operational over-power protection device of claim 4, further comprising a power module for powering each module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020207347.4U CN211239308U (en) | 2020-02-25 | 2020-02-25 | Solid heat storage type electric heating device group operation overpower protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020207347.4U CN211239308U (en) | 2020-02-25 | 2020-02-25 | Solid heat storage type electric heating device group operation overpower protection device |
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| CN211239308U true CN211239308U (en) | 2020-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162502A (en) * | 2020-02-25 | 2020-05-15 | 北京新能乐业科技有限公司 | Solid heat storage type electric heating device group operation overpower protection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162502A (en) * | 2020-02-25 | 2020-05-15 | 北京新能乐业科技有限公司 | Solid heat storage type electric heating device group operation overpower protection device |
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