CN218729272U

CN218729272U - Block terminal alarm circuit, block terminal

Info

Publication number: CN218729272U
Application number: CN202221798379.1U
Authority: CN
Inventors: 宁琼
Original assignee: Shenzhen Tengyuan Electrical Equipment Co ltd
Current assignee: Shenzhen Tengyuan Electrical Equipment Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-03-24
Anticipated expiration: 2032-07-12

Abstract

The utility model belongs to the technical field of the block terminal monitoring, a block terminal alarm circuit is disclosed, the block terminal comprises a timer U, pin 1 of timer connects ground, pin 2 connecting resistance R8 of timer U, resistance R3 and electric capacity C2's one end, timer U's pin 6 is connected to resistance R8's the other end, resistance R3's other end connecting resistance R4's one end and timer U's pin 7 are connected, ground is connected behind electric capacity C2's the other end series resistance R5, triode Q1's base is connected to timer U's pin 3, triode Q1's the one end of connecting pilot lamp RW behind triode Q1's the current collection knot series connection loudspeaker LS, resistance R4's the other end, resistance R7's one end and triode Q2's current collection knot, pilot lamp RW's the other end connecting resistance R7's the other end, triode Q2's base connect source VCC, triode Q2's projecting pole connecting thermistor RTC's one end and diode D's positive pole, timer U's pin 4 is connected to RTC resistance's the other end, the utility model provides the high security of distribution box operation.

Description

Block terminal alarm circuit, block terminal

Technical Field

The utility model relates to a block terminal monitoring technology field especially relates to a block terminal alarm circuit, block terminal.

Background

The distribution box is a total circuit distribution box for all users. The distribution box is a low-voltage distribution device formed by assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirement. The distribution box has the characteristics of small volume, simple and convenient installation, special technical performance, fixed position, unique configuration function, no field limitation, universal application, stable and reliable operation, high space utilization rate, less occupied area and environmental protection effect.

The block terminal is at the in-process of distribution operation, and the conflagration takes place occasionally, has certain potential safety hazard, can cause huge loss when serious. Therefore, in order to protect the distribution box and the related equipment, corresponding high-temperature protection measures need to be designed for the distribution box.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a block terminal alarm circuit, block terminal aim at improving the security of block terminal when the distribution operation.

For the utility model purpose above the realization, on the one hand, the utility model discloses a block terminal alarm circuit, including timer U, pin 1 of timer U connects ground, pin 2 connecting resistance R8, resistance R3 and electric capacity C2's one end of timer U, resistance R8's the other end is connected timer U's pin 6, resistance R3's other end connecting resistance R4's one end is connected timer U's pin 7, connect ground behind electric capacity C2's the other end series resistance R5, triode Q1's base is connected to timer U's pin 3, connect the one end of pilot lamp RW behind triode Q1's the current collection knot series connection loudspeaker LS the other end of resistance R4, resistance R7's one end and triode Q2's current collection knot, the other end of pilot lamp RW is connected resistance R7's the other end, triode Q2's base connect the power VCC, triode Q2's projecting pole is connected thermistor RTC's one end and diode D's positive pole, thermistor's the other end is connected the RTC pin 4 of timer U.

The utility model discloses further set up to: the negative pole of the diode D is connected with the resistor R1 in series and then is connected with the ground, and the diode D and the resistor R1 are connected with the resistor R2 in parallel.

The utility model discloses further set up to: and a pin 5 of the timer U is sequentially connected with a resistor R6 and a capacitor C1 in series and then is connected with the ground.

The utility model discloses further set up to: and a pin 8 of the timer U is connected with the power supply VCC.

The utility model discloses further set up to: the emitter of the triode Q1 is connected with the ground.

The utility model discloses further set up to: the indicator light is a red indicator light.

The utility model discloses further set up to: the timer U is an ICM7555 timer.

The utility model discloses further set up to: the thermistor RTC is an MF53 thermistor.

The utility model discloses further set up to: the triode Q1 and the triode Q2 are both NPN triodes.

On the other hand, the utility model discloses a block terminal installs foretell block terminal alarm circuit, including the block terminal main part, pilot lamp mounting hole and loudspeaker mounting hole have been seted up at the top of block terminal main part one side.

To sum up, compare with prior art, the utility model discloses strengthen the barrier propterty of block terminal, improved the security of block terminal when the distribution operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic circuit diagram of an alarm circuit of a power distribution box according to the present embodiment;

fig. 2 is a schematic perspective structure diagram of the distribution box provided in this embodiment.

Reference numerals are as follows: 100. a distribution box main body; 101. an indicator lamp mounting hole; 102. a horn mounting hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments, it is to be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

In the description of the present invention, it should be noted that the terms "front", "back", "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

In one aspect, the present embodiment provides a power distribution box alarm circuit, as shown in fig. 1, including a timer U, a pin 1 of the timer U is connected to ground, a pin 2 of the timer U is connected to one end of a resistor R8, a resistor R3 and a capacitor C2, the other end of the resistor R8 is connected to a pin 6 of the timer U, the other end of the resistor R3 is connected to one end of a resistor R4 and is connected to a pin 7 of the timer U, the other end of the capacitor C2 is connected to ground after being connected in series with a resistor R5, a pin 3 of the timer U is connected to a base of a transistor Q1, a collector junction of the transistor Q1 is connected to one end of an indicator RW, the other end of the resistor R4, one end of the resistor R7 and a collector junction of a transistor Q2 after being connected to a speaker LS in series, the other end of the indicator RW is connected to the other end of the resistor R7, the base of the transistor Q2 is connected to a power supply VCC, an emitter of the transistor Q2 is connected to one end of a thermistor RTC and an anode of a diode D, the other end of the thermistor RTC is connected with a pin 4 of a timer U, the negative pole of the diode D is connected with the ground after being connected with a resistor R1 in series, the diode D and the resistor R1 are connected with a resistor R2 in parallel, a pin 5 of the timer U is connected with the ground after being connected with a resistor R6 and a capacitor C1 in series in sequence, a pin 8 of the timer U is connected with a power supply VCC, and an emitter of the triode Q1 is connected with the ground, in the embodiment, the indicator lamp is a red indicator lamp, the timer U is an ICM7555 timer, the thermistor RTC is an MF53 thermistor, the triode Q1 and the triode Q2 are both NPN triodes, in the specific implementation process, when the distribution box encounters a fire, the temperature around the thermistor RTC rises sharply, the resistance value drops sharply, at the time, the pin 4 of the timer U is changed from low level to high level, thereby triggering the pin 3 of the timer U, the triode Q1 is conducted, the horn LS gives an alarm sound, the indicator lamp lights red light, the operation personnel can stop the distribution operation of block terminal and extinguish the naked light in time after receiving the conflagration warning, and this embodiment has strengthened the barrier propterty of block terminal, has improved the security of block terminal when the distribution operation.

On the other hand, the present embodiment provides a distribution box, as shown in fig. 2, in which the above-mentioned alarm circuit of the distribution box is installed, and includes a distribution box main body 100, an indicator light installation hole 101 and a horn installation hole 102 are formed in a top portion of one side of the distribution box main body 100, in a specific implementation process, an indicator light RW is installed in the indicator light installation hole 101, and a horn LS is installed in the horn installation hole 102.

To sum up, the utility model discloses following beneficial effect has: the utility model discloses a block terminal alarm circuit, including timer U, pin 1 of timer connects ground, pin 2 connecting resistance R8 of timer U, resistance R3 and electric capacity C2's one end, pin 6 of timer U is connected to resistance R8's the other end, resistance R3's other end connecting resistance R4's one end and is connected timer U's pin 7, connect ground behind electric capacity C2's other end series resistance R5, triode Q1's base is connected to timer U's pin 3, connect the one end of pilot lamp RW behind triode Q1's the current collection knot series loudspeaker LS, resistance R4's the other end, resistance R7's one end and triode Q2's current collection knot, the other end connecting resistance R7's of pilot lamp RW the other end, the VCC that connects is connected to triode Q2's base, thermistor RTC's one end and diode D's positive pole are connected to triode Q2's projecting pole, timer U's the other end connecting resistance U's pin 4, diode D's negative pole series resistance R1 is connected ground behind the diode D and resistance R2, VCC that the time VCC that the terminal that the time of timer U connects ground connection increases the power distribution box, this utility model discloses the utility model has improved the power distribution terminal when the distribution terminal is connected.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a block terminal alarm circuit, includes timer U, its characterized in that: the pin 1 of the timer is connected with the ground, the pin 2 of the timer U is connected with one end of a resistor R8, a resistor R3 and a capacitor C2, the other end of the resistor R8 is connected with the pin 6 of the timer U, one end of the other end of the resistor R3 is connected with one end of a resistor R4 and is connected with the pin 7 of the timer U, the other end of the capacitor C2 is connected with the ground after being connected with a resistor R5 in series, the pin 3 of the timer U is connected with the base electrode of a triode Q1, one end of an indicator lamp RW, the other end of the resistor R4, one end of the resistor R7 and the collector junction of the triode Q2 are connected after the collector junction of the triode Q1 is connected with a loudspeaker LS in series, the other end of the indicator lamp RW is connected with the other end of the resistor R7, the base electrode of the triode Q2 is connected with a power supply VCC, the emitter of the triode Q2 is connected with one end of a thermistor RTC and the anode of a diode D, and the other end of the thermistor RTC is connected with the pin 4 of the timer U.

2. The electrical box alarm circuit of claim 1, wherein the diode D has a negative terminal connected in series with a resistor R1 and then connected to ground, and wherein the diode D and the resistor R1 are connected in parallel with a resistor R2.

3. The electrical box alarm circuit of claim 1, wherein pin 5 of timer U is connected in series with resistor R6 and capacitor C1 in series and then to ground.

4. The panelboard alarm circuit of claim 1, wherein pin 8 of said timer U is connected to said power source VCC.

5. A panelboard alarm circuit according to claim 1, wherein said emitter of transistor Q1 is connected to ground.

6. The electrical box alarm circuit of claim 1, wherein said indicator light is a red indicator light.

7. The panelboard alarm circuit of claim 1, wherein said timer U is an ICM7555 timer.

8. The electrical box alarm circuit of claim 1, wherein said thermistor RTC is an MF53 thermistor.

9. The electrical box alarm circuit of claim 1, wherein said transistor Q1 and said transistor Q2 are NPN transistors.

10. An electric box equipped with an electric box alarm circuit according to any of claims 1-8, comprising an electric box body (100), characterized in that: the top of one side of the distribution box main body (100) is provided with an indicator lamp mounting hole (101) and a horn mounting hole (102).