CN211791351U

CN211791351U - Gravity gliding control circuit of fireproof smoke-blocking motor

Info

Publication number: CN211791351U
Application number: CN202020136275.9U
Authority: CN
Inventors: 刘王雍杰; 刘乐; 王绍斌
Original assignee: Zhangzhou Anlin Electromechanical Research Institute Co ltd
Current assignee: Zhangzhou lianba Digital Technology Co.,Ltd.
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-10-27
Anticipated expiration: 2030-01-21
Also published as: WO2021147578A1

Abstract

The utility model provides a fire prevention keeps off cigarette motor gravity gliding control circuit, including controller, double-circuit relay, motor coil, bridge heap, electric capacity and MOS pipe, double-circuit relay's normally open contact is connected No. 1 port of controller with motor coil's No. 2 ports, double-circuit relay's normally closed contact is connected the positive pole of bridge heap with the drain electrode of MOS pipe, electric capacity connect in parallel in the bridge heap. It has solved the fire prevention and has kept off the too fast of cigarette descent speed to and during the fire alarm, the unable gravity of fire prevention that leads to when external motor connecting wire short circuit descends or the descent speed problem too slow.

Description

Gravity gliding control circuit of fireproof smoke-blocking motor

Technical Field

The utility model relates to a fire prevention keeps off cigarette and hangs down wall control technical field, especially relates to a fire prevention keeps off cigarette motor gravity gliding control circuit.

Background

The fireproof smoke-blocking vertical wall is mainly used for blocking the diffusion of smoke, is mainly applied to occasions such as high-rise or super high-rise large markets, office buildings, warehouses and the like, can effectively block the smoke from transversely flowing under the ceiling of a building, is favorable for improving the smoke exhaust effect in a smoke-proof subarea, and plays a positive role in guaranteeing the safety of lives and properties of people. Under unexpected circumstances, the smoke-blocking vertical wall descends by self weight, and the current smoke-blocking vertical wall adopts two modes: one is that after the fuse is fused, the brake is released, the smoke-blocking vertical wall slides down under the action of gravity, and the other is that when the external power supply is cut off, the brake is automatically released, and the smoke-blocking vertical wall slides down under the action of gravity. When the motor rotates and the smoke blocking vertical wall slides downwards, the sliding speed is very high, great potential safety hazards exist, and the safety of escape personnel below the smoke blocking vertical wall is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fire prevention keeps off cigarette motor gravity gliding control circuit has solved the fire prevention and has kept off the cigarette descending speed too fast to and during the fire alarm, the fire prevention that leads to when the short circuit of outside motor connecting wire keeps off the unable gravity of cigarette and descends or the descending speed problem too slow.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a fire prevention keeps off cigarette motor gravity gliding control circuit which characterized in that: including controller, double-circuit relay, motor coil, bridge heap, electric capacity and MOS pipe, the normally open contact of double-circuit relay connects the No. 1 port of controller with motor coil's No. 2 ports, the normally closed contact of double-circuit relay connects the positive pole of bridge heap with the drain electrode of MOS pipe, electric capacity connect in parallel in the bridge heap.

Preferably, the drain and the gate of the MOS transistor are connected to the first resistor, and the gate of the MOS transistor is grounded through the second resistor.

Preferably, the capacitor is an electrolytic capacitor.

Preferably, the MOS transistor is a P-channel MOS transistor.

To sum up, compare with prior art, the utility model has the advantages of: when an external power supply is cut off, the motor gravity glides downwards, the gliding speed of the motor gravity is adjusted through the MOS tube, and the influence on escape personnel below due to the too high descending speed of the fireproof smoke barrier is avoided; when external motor connecting wire short circuit, cut off external connection through the relay, avoid preventing that fire keeps off the unable gravity of cigarette and descend or the problem that the descent speed is too slow.

Drawings

Fig. 1 is a circuit diagram of the present invention.

The reference numbers in the figures are as follows:

1. the controller, 2, the double-circuit relay, 3, the motor coil, 4, the bridge stack, 5, the capacitor, 6, the MOS tube, 7, the first resistor, 8, the second resistor.

Detailed Description

The invention will be further described with reference to the following examples in the drawings.

As shown in fig. 1, the gravity glide control circuit of the fire and smoke prevention motor comprises a controller 1, a two-way relay 2, a motor coil 3, a bridge rectifier 4, a capacitor 5 and an MOS transistor 6. The circuit is arranged in the fireproof smoke-blocking tubular motor, is led out through a connecting wire and is connected with the controller 1 and a power supply. The normally open contact of double-circuit relay 2 connects No. 1 port of controller 1 and No. 2 ports of motor coil 3, and when external power supply was normal, this normally open contact was closed, and steerable motor normally worked under the power effect to realize keeping off the ascending and descending of cigarette plumbing wall, when conflagration etc. lead to motor external link disconnection or short circuit, cut off external connection line. After the external connecting line is disconnected, the normally closed contact of the two-way relay 2 is connected with the anode of the bridge stack 4 and the drain of the MOS tube 6, and the capacitor 5 is connected in parallel with the bridge stack 4. After the external connecting line is disconnected, the motor coil 3 discharges and is absorbed and consumed by the capacitor 5 and the MOS tube 6, and the descending speed of the motor is delayed.

The drain electrode and the grid electrode of the MOS tube 6 are connected with the first resistor 7, the grid electrode of the MOS tube 6 is grounded through the second resistor 8, the first resistor 7 is a 10R resistor, and the second resistor 8 is a 10K resistor.

The capacitor 5 is an electrolytic capacitor, and the negative electrode of the capacitor 5 is grounded. The MOS tube 6 is preferably a P-channel MOS tube.

The above description is only for explaining the present invention, so that the person skilled in the art can completely implement the present invention, but not for limiting the present invention, and after reading the present specification, the person skilled in the art can make modifications to the present embodiment as required without inventive contribution, which are all modifications without inventive contribution, but are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a fire prevention keeps off cigarette motor gravity gliding control circuit which characterized in that: including controller (1), double-circuit relay (2), motor coil (3), bridge heap (4), electric capacity (5) and MOS pipe (6), the normally open contact of double-circuit relay (2) is connected No. 1 port of controller (1) with No. 2 ports of motor coil (3), the normally closed contact of double-circuit relay (2) is connected the positive pole of bridge heap (4) with the drain electrode of MOS pipe (6), electric capacity (5) connect in parallel in bridge heap (4).

2. The fire and smoke protection motor gravity glide control circuit of claim 1, wherein: the drain electrode and the grid electrode of the MOS tube (6) are connected with the first resistor (7), and the grid electrode of the MOS tube (6) is grounded through the second resistor (8).

3. The fire and smoke protection motor gravity glide control circuit of claim 1, wherein: the capacitor (5) is an electrolytic capacitor.

4. The fire and smoke protection motor gravity glide control circuit of claim 1, wherein: the MOS tube (6) is a P-channel MOS tube.