CN209571813U - A kind of alternating current overload protection device with remote alarming function - Google Patents

Abstract

The utility model discloses electrical safety technical fields, and in particular to a kind of alternating current overload protection device with remote alarming function, comprising: guard box, exchange electric contactor, temperature detect switch (TDS), relay and NB-IoT wireless transport module；AC power supply input lead temperature control exchange electric contactor is monitored by temperature detect switch (TDS) and connects power supply when conductor temperature restores normal when conducting wire because overload load causes to disconnect power supply when the temperature is excessively high, to avoid electrical fire occurs；Meanwhile exchange electric contactor voltage change signal is acquired using relay, overload loading history whether occurs to cloud server report electricity consumption field wires via NB-IoT wireless transport module, realizes that the control of alternating current overload protection is information-based；The utility model is practical, high-efficient.

Description

An AC overload protection device with remote alarm function

technical field

The utility model relates to the technical field of electrical safety, in particular to an alternating current overload protection device with a remote alarm function.

Background technique

Ensuring residents' safe use of electricity is a basic requirement for people's livelihood, and preventing electrical fires is the most important and basic work for people's livelihood. The fire caused by overload is one of the main causes of electrical fire accidents. The overload refers to that when the current passing through the wire exceeds the safety threshold, the temperature of the wire will continue to rise; when the wire is overloaded, it will accelerate The aging of the wire insulation layer, when the load is severe, the temperature of the wire will continue to rise, which will easily cause the wire insulation layer to burn, thus causing a fire accident. Especially in old communities, the circuit is aging and the load capacity is declining. With the improvement of living standards, the residents have more and more electrical products, which can easily lead to overloading of the circuit. Therefore, how to effectively monitor the overload of the wire is a guarantee. The basic needs of residents' electricity safety. Based on this, the utility model designs an AC overload protection device with a remote alarm function to solve the above-mentioned problems, and at the same time assist management personnel to monitor and maintain the power consumption site.

Contents of the invention

(1) Solved technical problems.

The purpose of the utility model is to provide an alternating current overload protection device with a remote alarm function, so as to solve the safety and management problems of residents' electricity use.

(2) Technical solutions.

In order to achieve the above purpose, the utility model provides the following technical solutions: an AC overload protection device with a remote alarm function, including a protection box, an AC contactor, a temperature switch, a relay and a NB-IoT wireless transmission module; the protection box The top surface is equipped with a movable clamping protection box cover, the left side wall and the right side wall are respectively provided with input wire connection holes and output wire connection holes, the left side wall is provided with antenna connection holes, and the lower end is extended with fixed slots on both sides There are fixed notches on the left, middle and right sides of the inner lower end respectively; the AC contactor is fixed on the lower right side of the inner lower end of the protection box; the temperature switch is located on the left side of the AC contactor Above; the relay is fixed at the lower middle position inside the protection box; the NB-IoT wireless transmission module is fixed at the left side of the lower end inside the protection box; the temperature switch is electrically connected to the AC contactor The relay is electrically connected to the AC contactor; the NB-IoT wireless transmission module is electrically connected to the AC contactor and the relay.

Preferably, the left side of the AC contactor is provided with an incoming line main contact, a control coil contact and an incoming line auxiliary contact, and the right side is provided with an outgoing line main contact and an outgoing line auxiliary contact.

Preferably, the temperature switch monitors the temperature of the AC power supply input wire, and forms an overload protection control circuit with the AC contactor by connecting the auxiliary contact of the AC contactor.

Preferably, the relay detects the voltage change of the AC contactor, and outputs a switching value.

Preferably, the NB-IoT wireless transmission module is provided with a switch input interface, the input interface is connected to the relay output, the output end of the NB-IoT wireless transmission module is connected to an antenna, and the NB-IoT wireless transmission module is sequentially Communicate with remote servers through antennas, NB-IoT base stations.

(3) Beneficial effects.

(1) The utility model judges whether the power supply input wire is overloaded by monitoring the temperature of the AC power supply input wire; when the temperature of the power supply input wire rises to a threshold due to continuous overloading, the temperature switch controls the AC contactor to disconnect The main line stops power supply to avoid danger. At the same time, the relay outputs a power supply disconnection signal by detecting the voltage change of the AC contactor, and reports the occurrence of a wire overload event to the remote server through the NB-IoT wireless transmission module; when the temperature of the power supply input wire recovers To the safe range, the temperature switch controls the AC contactor to connect to the main line to restore power supply. At the same time, the relay detects the voltage change of the AC contactor to output a power supply recovery signal, and reports the power supply recovery event to the remote server through the NB-IoT wireless transmission module.

(2) The utility model can not only judge the overload state of the load end in real time and protect the safety of electricity consumption, but also facilitate the management personnel to locate and count the locations where electrical fires are prone to occur by reporting the overload event to the remote, so as to carry out power supply in a targeted manner Line maintenance work.

Description of drawings

Fig. 1 is a working principle diagram of the utility model.

Fig. 2 is a structural schematic diagram of the utility model.

Fig. 3 is a schematic diagram of the circuit principle of the utility model.

Explanation of symbols: 1 is the protection box, 101 is the input wire connection hole, 102 is the output wire connection hole, 103 is the antenna connection hole, 104 is the fixed notch, 105 is the fixed notch, 2 is the protection box cover, 3 is the AC contact 4 is a relay, 5 is an NB-IoT wireless transmission module, 6 is a temperature switch, 7 is a power supply input wire, and 8 is a power supply output wire.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

In the embodiment of the utility model, the directional indication (such as up, down, left, right) is only used to explain the relative positional relationship between the components in a certain posture (as shown in Figure 2), if the specific posture changes , the directional indication changes accordingly.

This embodiment provides an AC overload protection device with a remote alarm function, as shown in Figures 1 to 3, including a protection box 1, the top surface of the protection box 1 is provided with a protection box cover 2, the left side wall and the right side The side walls are respectively provided with an input wire connection hole 101 and an output wire connection hole 102, an antenna connection hole 103 is provided under the left side wall, and fixed notches 104 and 105 are extended on both sides of the lower end; An AC contactor 3 is fixedly installed on the side, a relay 4 is fixedly installed on the left side of the AC contactor 3, and a NB-IoT wireless transmission module 5 is fixedly installed on the left side of the relay 4; a temperature switch 6 is installed on the upper left side of the AC contactor 3 .

Deployment method: when the utility model is in daily use, open the protection box cover 2, connect the temperature switch 6 wiring terminal to the left side input auxiliary contact of the AC contactor 3; The input wire connection hole 101 on the side wall is passed in, connected to the left incoming main contact of the AC contactor 3, and at the same time, the contact of the temperature switch 6 is attached to the power supply input wire 7, and fixed with insulating electrical tape; The input line of 4 is connected to the left input auxiliary contact of AC contactor 3, the output line of relay 4 is connected to the input interface of NB-IoT wireless transmission module 5; the power supply line of NB-IoT wireless transmission module 5 is connected to The main contact on the left side of the AC contactor 3 is connected to the antenna of the NB-IoT wireless transmission module 5 through the antenna connection hole 103 under the left wall of the protection box; The main contacts of the outgoing lines are connected and passed out through the output wire connection hole 102 on the right side wall of the protection box 1 .

Working principle: the temperature switch 6 monitors whether the temperature control device of the power supply input wire 7 outputs alternating current; when the power consumption continues to be overloaded, the temperature of the power supply input wire 7 will continue to rise, and when the temperature of the power supply input wire 7 reaches the alarm threshold, The temperature switch 6 will control the AC contactor 3 to disconnect the circuit and stop the power supply. At the same time, the AC contactor 3 outputs a power-off signal through the relay 4, and reports the overload event at the location of the device to the remote server through the NB-IoT wireless transmission module 5; when the power supply The temperature of the input wire 7 returns to a safe range, and the temperature switch 6 will control the AC contactor 3 to turn on the loop to restore power supply, and at the same time, the AC contactor 3 outputs a power-on signal through the relay 4, and reports to the remote server through the NB-IoT wireless transmission module 5 Power recovery event at the location of the device.

The preferred embodiments of the present invention disclosed above are used to help explain the present invention. The preferred embodiment does not exhaustively describe all the details, and does not limit the utility model to only the described specific implementation modes. For those of ordinary skill in the art, these implementations can be made without departing from the principle of the utility model. Variations, modifications, substitutions and variations of the examples. The invention is to be limited only by the claims and their full scope and equivalents.

Claims (5)

1. a kind of alternating current overload protection device with remote alarming function, it is characterised in that: including guard box (1), institute It states guard box (1) top surface and is equipped with protection case lid (2), left side wall and right side wall are respectively equipped with input lead and connect hole (101) and output Conducting wire connects hole (102), and antenna is equipped with below left side wall and is connect hole (103), lower end both sides external extend be equipped with fixed notch (104) and (105)；Fixed setting exchange electric contactor (3) on the right side of guard box (1) interior lower end, the exchange electric contactor (3) are left Relay (4) are fixedly installed in side, and NB-IoT wireless transport module (5) are fixedly installed on the left of the relay (4)；The alternating current Contactor (3) is electrically connected temperature switch (6) and constitutes overload protection control circuit；Described in the relay (4) is electrically connected It exchanges electric contactor (3)；The NB-IoT wireless transport module (5) be electrically connected the exchange electric contactor (3) and it is described after Electric appliance (4).

2. a kind of alternating current overload protection device with remote alarming function according to claim 1, feature exist In: guard box (1) left side wall is equipped with input lead and connects hole (101) for accessing alternating current input lead, and right side wall is equipped with Output lead connects hole (102) for spreading out of alternating current output lead, and antenna is equipped with below left side wall and connects hole (103) for accessing day Line, lower end both sides external, which extends, is equipped with fixed notch (104) and (105) for fixing single unit system.

3. a kind of alternating current overload protection device with remote alarming function according to claim 1, feature exist In: enter line main contacts connection alternating current input lead, the connection exchange of right side outlet main contacts on the left of the exchange electric contactor (3) Electricity output conducting wire；The temperature switch (6) is close to enter the alternating current that line main contacts is connect with exchange electric contactor (3) left side Input lead, by monitoring input lead temperature, whether control device exports alternating current.

4. a kind of alternating current overload protection device with remote alarming function according to claim 1, feature exist In: the relay (4) is for detecting exchange electric contactor (3) the voltage change information.

5. a kind of alternating current overload protection device with remote alarming function according to claim 1, feature exist In: NB-IoT wireless transport module (5) input terminal is connected with the relay (4) output end；The NB-IoT is wirelessly passed Defeated module (5) successively communicates by antenna, the base station NB-IoT with remote server.