CN203415061U

CN203415061U - Intelligent electrical fire hazard monitoring device

Info

Publication number: CN203415061U
Application number: CN201320424887.8U
Authority: CN
Inventors: 李欣; 王健; 熊鲁红; 黄建加
Original assignee: XIAMEN TAIHANG TECHNOLOGY Co Ltd
Current assignee: XIAMEN TAIHANG TECHNOLOGY Co Ltd
Priority date: 2013-07-17
Filing date: 2013-07-17
Publication date: 2014-01-29
Anticipated expiration: 2023-07-17

Abstract

The utility model discloses an intelligent electrical fire hazard monitoring device. A fire hazard monitoring alarm of the intelligent electrical fire hazard monitoring device is respectively connected with an N line of a working power supply, a phase line L3 of the working power supply, a phase line temperature sensor t3 arranged on the phase line L3 of the working power supply, a phase line temperature sensor t2 arranged on a phase line L2 of the working power supply, a phase line temperature sensor t1 arranged on a phase line L1 of the working power supply, residual current sensors, an environment temperature sensor, an environment humidity sensor and a data processing computer through leads. The intelligent electrical fire hazard monitoring device is characterized in that: the fire hazard monitoring alarm is further connected with the phase line L2 of the working power supply and the phase line L1 of the working power supply through leads; and the phase lines L3, L2 and L1 of the working power supply are respectively provided with current transformers CT3, CT2 and CT1, and the current transformers CT3, CT2 and CT1 are respectively connected with the fire hazard monitoring alarm through leads. The intelligent electrical fire hazard monitoring device is a fire hazard monitoring device integrated with residual current identification, arc current identification and short circuit identification functions.

Description

The electric fire-disaster monitoring device of a kind of intellectuality

Technical field

The utility model relates to the electric fire-disaster monitoring device of a kind of intellectuality.

Background technology

But according to public security fire-fighting department statistics, the fire causing because of electric reason in recent years accounts for the first place of all kinds of cause of fire, and still has the trend of continuous rising, the application of common electric fire monitoring system to play certain effect imperfection still.Be applied at present supply line's fire-disaster monitoring device, it is according to GB 14287.2-2005 < < electric fire monitoring system part 2: the residual current monitoring type of the standard manufacture of the installation and operation > > of residual current type detector for electric fire protection > > and GB 13955-2005 < < aftercurrent action protecting equipment, fire-disaster monitoring device is used zero sequence current mutual inductor to gather residual current, circuit is shown in Fig. 1, in three-phase power line, every practical wiring difference that arrives mutually user, ground capacitance is also different, therefore in the residual current collecting, there are pure resistive leakage current and line mutual-ground capacitor residual current, it during fire alarm, is not the residual current that has occurred warning critical value on true meaning, wrong report phenomenon is more serious.Many units are cancelled without hesitation not to be installed or installs and do not use, this has brought risk to the fire hazard monitoring on true meaning, also make fire hazard monitoring Technique Popularizing be affected, fault electric arc electric current, the short-circuit current in addition that cause in addition electric wiring breaking out of fire accident, the short-circuit current occurring in line terminal can not promote circuit breaker tripping sometimes.

Summary of the invention

The purpose of this utility model, to provide a kind of intellectuality electric fire-disaster monitoring device, particularly a kind of have residual current identification, flame current identification, short-circuit current and identify Trinitarian fire-disaster monitoring device, it can solve current electric fire monitoring device residual current detection is forbidden and the false alarm problem of appearance, and increase fault electric arc electric current, short-circuit current recognition function, control to greatest extent the generation of electrical fire.

The utility model is to realize like this, the electric fire-disaster monitoring device of described a kind of intellectuality, it comprises fire disaster monitoring alarm, fire disaster monitoring alarm is connected with working power N line respectively through wire, L3 is connected with working power phase line, be connected with the phase line temperature sensor t3 being located on working power phase line L3, be connected with the phase line temperature sensor t2 being located on working power phase line L2, be connected with the phase line temperature sensor t1 being located on working power phase line L1, be connected with residual current sensor, be connected with environment temperature sensor, be connected with ambient humidity sensor, be connected with data handling machine, it is characterized in that: described fire disaster monitoring alarm is also connected with working power phase line L2 through wire, L1 is connected with working power phase line, on working power phase line L3, L2, L1, be respectively equipped with Current Transmit 3, CT2, CT1, and be connected with fire disaster monitoring alarm respectively through wire.

The beneficial effects of the utility model are, the residual current that sensor is detected is delivered to phase discriminator and is carried out sorting, the heterogeneity electric current sub-electing is sent into data handling machine and is carried out Screening Treatment, then the leakage current causing because of Insulation Problems and fire hazard monitoring warning critical value are compared, reported to the police, eliminate electric disaster hidden-trouble.

Accompanying drawing explanation

Fig. 1 is now widely used residual current type fire hazard monitoring alarm principle figure.

Fig. 2 is the utility model fire hazard monitoring alarm principle figure.

Embodiment

The electric fire-disaster monitoring device of a kind of intellectuality described in the utility model, as shown in Figure 2, it comprises fire disaster monitoring alarm 1, fire disaster monitoring alarm 1 is connected with working power N line respectively through wire, L3 is connected with working power phase line, be connected with the phase line temperature sensor t3 being located on working power phase line L3, be connected with the phase line temperature sensor t2 being located on working power phase line L2, be connected with the phase line temperature sensor t1 being located on working power phase line L1, ZCT is connected with residual current sensor, t4 is connected with environment temperature sensor, RH is connected with ambient humidity sensor, be connected with data handling machine 15, described fire disaster monitoring alarm 1 is also connected with working power phase line L2 through wire, L1 is connected with working power phase line, on working power phase line L3, L2, L1, be respectively equipped with Current Transmit 3, CT2, CT1, and be connected with fire disaster monitoring alarm 1 respectively through wire.

In Fig. 2,1. fire disaster monitoring alarm, 2. working power N line contact, 3. working power phase line L3 contact, 4. working power phase line L2 contact, 5. working power phase line L1 contact, the 6. Current Transmit 3 on phase line L3,7. the temperature sensor t3 on phase line L3; 8. the Current Transmit 2 on phase line L2,9. the temperature sensor t2 on phase line L2; 10. the temperature sensor t1 on 1, the 11. phase line L1 of the Current Transmit on phase line L1; 12. residual current sensor ZCT, 13. environment temperature sensor t4,14. ambient humidity sensor RH, 15. data handling machines.

The principle of work of Fig. 2 is described below respectively:

(1), abnormal current protection: the working power phase line L3 of take is example: fire disaster monitoring alarm 1 is connected with working power phase line L3; it is upper that Current Transmit 3 and temperature sensor t3 are also arranged on working power phase line L3, is responsible for voltage, electric current and the temperature data of monitoring phase line L3.When there is abnormal current in phase line L3, voltage on phase line L3, electric current, temperature data and environment temperature sensor t4 data, ambient humidity sensor RH, residual current transformer ZCT give fire disaster monitoring alarm 1 by data simultaneously, 1 pair of above-mentioned six signal of fire disaster monitoring alarm carry out filtering, comparison, phase demodulation analyzing and processing, according to various faults arc waveform data, short-circuit current and the normal load current waveform data of storage in fire disaster monitoring alarm 1, compare calculating, and determine whether report to the police according to result of calculation.Various data and result of calculation are also given data handling machine 15 simultaneously and are shown.

(2), residual current sensor ZCT gives fire disaster monitoring alarm 1 by the residual current data in the three-phase line detecting, voltage in L3, L2, L1 phase line is given fire disaster monitoring alarm 1 by

contact

3,4,5 simultaneously, fire disaster monitoring alarm 1 phase discriminator carries out filtering to the line mutual-ground capacitor electric current in residual current, leave the residual current that real line insulation declines and causes, when this residual current surpasses setting value, send alerting signal.

Fig. 1 is now widely used residual current type fire hazard monitoring alarm principle figure, its principle of work is such: phase line temperature sensor t1, t2, t3 are responsible for monitoring supply line's temperature data, and compare with the data that environment temperature sensor t4 detects, the temperature detecting when phase line temperature sensor is during higher than setting value, illustrate that line load is overweight, provides alerting signal.Ambient humidity sensor RH is responsible for detecting humidity, for assessment line temperature with reference to.When detecting residual current off-rating, residual current sensor ZCT provides alerting signal.Its wrong report phenomenon is more serious, causes the distrust of people to its alerting signal.

In Fig. 1: 1. fire disaster monitoring alarm, 2. working power N line contact, 3. working power phase line L3 contact, 4. the temperature sensor t3 on phase line L3,5. the temperature sensor t2 on phase line L2,6. the temperature sensor t1 on phase line L1,7. residual current sensor ZCT, 8. environment temperature sensor t4,9. ambient humidity sensor RH, 10. data handling machine.

The utility model is a kind ofly to have residual current identification, flame current identification, short-circuit current and identify Trinitarian fire-disaster monitoring device.

Claims

1. the electric fire-disaster monitoring device of intellectuality, it comprises fire disaster monitoring alarm, fire disaster monitoring alarm is connected with working power N line respectively through wire, L3 is connected with working power phase line, be connected with the phase line temperature sensor t3 being located on working power phase line L3, be connected with the phase line temperature sensor t2 being located on working power phase line L2, be connected with the phase line temperature sensor t1 being located on working power phase line L1, be connected with residual current sensor, be connected with environment temperature sensor, be connected with ambient humidity sensor, be connected with data handling machine, it is characterized in that: described fire disaster monitoring alarm is also connected with working power phase line L2 through wire, L1 is connected with working power phase line, on working power phase line L3, L2, L1, be respectively equipped with Current Transmit 3, CT2, CT1, and be connected with fire disaster monitoring alarm respectively through wire.