CN204066313U - A kind of residual current type detector for electric fire protection - Google Patents

Abstract

The utility model discloses a kind of residual current type detector for electric fire protection, and this detector for electric fire protection is made up of residual current transformer, residual current input alarm module, man-machine interaction HMI module and corresponding protection and sound, light warning function etc.Residual current transformer is responsible for the detection of residual current induction of signal; residual current input alarm module is responsible for quantification treatment, the warning computing of electric leakage signal, report to the police output, Communication processing, protection act, and man-machine interaction HMI module in charge shows computing, accepts the operation etc. of human-computer interaction function.The utility model is that one has high integration degree, makes the lifting of product information modularization, automatic capability, mounting means residual current type detector for electric fire protection flexibly.

Description

A kind of residual current type detector for electric fire protection

Technical field

The utility model relates to a kind of detector for electric fire protection, particularly a kind of residual current type detector for electric fire protection.

Background technology

The warning function of earth detector is proposed in " residual current type detector for electric fire protection " GB, product safety and ambient adaptability General Requirements, it is the basic function of leakage fire alarming, it is the necessary functions of product, make product can meet because residual current produces the detection of fire hazard, report to the police, owing to not mentioning display mode in technical standard, ability to communicate, communication modes, mounting means, equipment building form, mutual inductor interstar connection mode, therefore common product makes an overall instrumentation module formula structure, display section is together with detection alarm partial design, and 1 loop can only be monitored, only has 1 communication port, possesses general fault detection capability, mounting means underaction, and current transformer is gone between longlyer easily to be disturbed, not there is product expansion interface or HMI interface.Therefore having can multichannel residual current detection, and employing can self-inspection transformer interface, and with multiple communication port, Install and configure mode flexibly residual current type detector for electric fire protection becomes a kind of demand.

Utility model content

For solving prior art above shortcomings, the utility model proposes a kind of residual current type detector for electric fire protection, adopt two-wire system or the wiring of four-wire system residual current transformer, and a detection alarm module can link one to four residual current transformer, there are 2 communication interfaces, a system integration or remote monitoring communication port, an expansion or HMI man-machine interaction special purpose interface, and HMI human-computer interaction module and detection alarm module separate configuration are installed.

The utility model is solved by following technical scheme:

The utility model is a kind of residual current type detector for electric fire protection; it comprises one to four residual current transformers; one to be connected with described residual current transformer and to be responsible for the detection alarm module of electric leakage signal collection, process, computing, warning and protection, communication function and one; the one HMI human-computer interaction module be connected with described input alarm module, HMI human-computer interaction module also comprises a LCD MODULE and man machine operation interface.

Independent HMI human-computer interaction module shell described in the utility model is provided with a LCDs.

Owing to adopting above technical scheme, a kind of residual current type detector for electric fire protection of the present utility model, which employs two-wire system or four-wire system residual current transformer interface, the probability decreasing wiring workload and make mistakes, detection alarm module has two communication interfaces, add expansion and the monitoring capacity of product, HMI human-computer interaction module and detection alarm module be installed separately can make residual current transformer as far as possible near detection alarm module improve accuracy of detection and also mounting means flexible, multiple detection alarm module can share a HMI human-computer interaction module, reduce costs, increase work efficiency, and the display of independent special HMI human-computer interaction module and interactive function can be more powerful.

Accompanying drawing explanation

Fig. 1 is the functional block diagram of a kind of residual current type detector for electric fire protection of the utility model

Embodiment

Below in conjunction with embodiment, set forth the utility model further:

As shown in Figure 1, a kind of residual current type detector for electric fire protection of the utility model, it comprises at least one high precision residual current transformer 1, and residual current transformer is responsible for residual current induction detection; One with this residual current transformer 1 input alarm module 2, this input alarm module core is that the simulating signal that residual current transformer exports is carried out front end conversion and filtering process, and necessary signal input output interface defencive function is provided, the central processing unit of detection alarm module completes quantised samples, simulating signal is converted to digital signal and carries out warning computing, warning output, communication management; The one man-machine interaction HMI module be connected with this input alarm module 23, man-machine interaction HMI module 3 comprises data message crystal display and the human-machine operation function of a Chinese mark; Input alarm module comprises: mutual inductor interstar connection part of detecting 4, can detect mutual inductor interstar connection virtual connection, the faults such as short-term; Residual current alarm part 5 can in real time this compared with the size of program preset value and actual detected value, if actual detected value reaches warning preset value, then residual current alarm part 5 sound and light alarm implement protection act in real time; Input expansion module 6 is the functional module that signal alarm module 2 is expanded, and increases the residual current loop number of monitoring of tools; Remote communication module 7 is mainly data and the action message that fire alarm certre or other long distance control system provide residual current protecting.

Principle of work of the present utility model is: residual current transformer (residual current transformer 1) exports corresponding vector value one residual current signal according to each line current vector correlation flowed through through mutual inductor, this residual current simulates vector signal after the sampling and modulation treatment of input alarm module 2 by central operation controller sample quantization, the size of this quantized value reflects the power of the total loop residual current flowing through mutual inductor, the power of residual current judges the hazard level of electric leakage initiation fire according to this, these residual current data and the residual current alarm data preset are compared, according to this comparatively result produce report to the police or other protection act.Detection alarm module 2 is responsible for again the communication management of telecommunication management, man-machine interaction HMI module 3 simultaneously.

Therefore basic telecommunications number is: residual current transformer (detectable signal) → central processing unit collection signal

By above technical scheme, the utility model has higher integrated level, and make IT application in product, automaticity is improved, monitoring performance is more powerful, installs networking mode more flexible.

But above-mentioned embodiment is exemplary, being to better enable those skilled in the art understand this patent, can not being interpreted as it is restriction this patent being comprised to scope; As long as according to this patent disclose any equivalent change done or the modification of spirit, all fall into the scope that this patent comprises.

Claims (5)

1. a residual current type detector for electric fire protection; comprise one to four residual current transformer; one to be connected with described residual current transformer and be responsible for residual current signals collecting, process, warning computing, teletransmission communication, HMI communication, substantially reports to the police exports and protection act at interior input alarm module, it is characterized in that: detection alarm module can link simultaneously one to four road residual current transformer also collection simultaneously makes corresponding calculation process and warning.

2. a kind of residual current type detector for electric fire protection according to claim 1, is characterized in that: the residual current transformer connected adopts two-wire system or four-wire system transmission, can realize wiring faults and detect.

3. a kind of residual current type detector for electric fire protection according to claim 2, is characterized in that: detection alarm module has 2 communication interfaces, 1 responsible the signal is far passed, 1 responsible HMI communication and the expansion of detection alarm module.

4. a kind of residual current type detector for electric fire protection according to claim 3, it is characterized in that: the HMI module of an independent special man-machine interaction of installing of connection, this module and detection alarm module adopt communication modes to be connected and adopt bus-powered mode, and HMI module can complete the real-time display of residual electricity flow valuve and the running status of institute's link block.

5. a kind of residual current type detector for electric fire protection according to claim 4, it is characterized in that: also comprise each module described in the higher a set of equipment of integrated level and be arranged in described 3 independent shells installed, and shared by the mode flexible data of communication.