CN201852876U

CN201852876U - Integral lightning protection module with functions of leakage current detection and discharge frequency

Info

Publication number: CN201852876U
Application number: CN2010205444858U
Authority: CN
Inventors: 邱续东; 唐沂勇
Original assignee: Guangzhou Jst Science & Technology Co Ltd; Guangzhou Zhongguang Electronic Technology Co Ltd
Current assignee: Guangzhou JST Science & Technology Co., Ltd.; Guangzhou Zhong Guang Electric Technology Co., Ltd.
Priority date: 2010-09-26
Filing date: 2010-09-26
Publication date: 2011-06-01
Anticipated expiration: 2020-09-26

Abstract

The utility model discloses an integral lightning protection module with functions of leakage current detection and discharge frequency, comprising a surge protective device (SPD) base and a signal acquisition circuit. An SPD connection port is arranged on the SPD base, and a sensing coil for acquiring real-time leakage current value signals and lightning frequency signals of the SPD is connected to the side of the SPD connection port. The signal acquisition circuit is electrically connected with the sensing coil and respectively outputs electric connection to an AC/DC module and an SPD voltage limiting module, the SPD voltage limiting module respectively outputs electric connection to a rectification amplitude limiting photoelectricity isolating module and the AC/DC module, and the rectification amplitude limiting photoelectricity isolating module is also electrically connected with the AC/DC module. The other end of the AC/DC module is electrically connected with a data storage/processing module, and the data storage/processing module respectively outputs electric connection to an LED indicating lamp, a buzzing early warning device and a 485 communication port. The AC/DC module is also electrically connected with the 485 communication port. In the utility model, integral design is adopted, when a traditional module type SPD is at a degradation critical value, sound and light alarm is carried out automatically to remind a user of replacement.

Description

A kind of integrated lightning-protection module with leakage current detection and discharge time function

Technical field

The utility model relates to the thunder resisting equipment technical field, especially a kind of integrated lightning-protection module with leakage current monitoring and discharge time function.

Background technology

Along with the high speed development of microelectronics electronic technology, with the large scale integrated circuit each field that the microelectronics system such as communication, measurement, computer network of core has extensively applied to modern industry, agricultural, national defence, science and education and people's life.In recent years, systemic breakdown and device damage that thunder and lightning causes can be found everywhere, and cause countless man power and material's loss.Therefore, thunder and lightning disaster and shocking preventing technology have obtained the extensive concern of various circles of society.

Surge Protector can be released a large amount of pulse energies that produce because of thunderbolt into ground in the shortest time, makes electronic equipment avoid the harm of Lightning Electromagnetic Pulse, is used widely.Along with popularizing of votage limit type SPD (Surge Protective Device) protection, online SPD quantity is more and more.In long-term the use, elements such as voltage dependent resistor (VDR) are owing to bear the effect (electricity, heat, mechanical effect and their synergy) of various stress, the deterioration of meeting various damages of generation or performance, aging, short circuit, open circuit as voltage dependent resistor (VDR) damage, the decline of pressure sensitive voltage or the rising of leakage current etc., can cause temperature to raise, cause that voltage dependent resistor (VDR) is aged to inefficacy, thereby cause leakage current to increase and the safeguard function inefficacy, possibility generating device blast, on fire when serious, thereby accidents caused causing damage.

In the lightning protection of low-voltage distribution system, because votage limit type SPD adopts voltage dependent resistor (VDR) usually, suppresses the assembly that diode is this class SPD.Have good characteristics such as through-current capacity is big, the response time fast, no afterflow, combination in any, manufacture maximum in numerous lightning protection components, application surface is the widest.

" building lightning protection device inspection specifications " explicitly calls in (GB/T21431-2008) and answers efficiently and effectively to carry out the SPD security performance to detect, estimate.Therefore, detect in time and damage or SPD that performance reduces, to the generation of avoiding accident, reducing the loss has very important significance.Please refer to illustrated in figures 1 and 2, Fig. 1 and Fig. 2 represent traditional lightning-protection module structural representation, it has SPD base 3, the bottom, one side of SPD base 3 is provided with the guide-track groove 4 of 35mm standard, on SPD base 3, be provided with SPD and dial slotting module 2, SPD dials slotting module 2 and is provided with SPD Wiring port 5, and deterioration pilot lamp 6; The online SPD of this conventional art, if thunderbolt environment of living in is more abominable, presumable SPD is impacted by surge for several times, be in critical zone normal and damage, even if do on-the-spot test with " thunder and lightning surge tester ", be difficult to also judge that whether qualified tested SPD is with " pressure sensitive voltage tester ", " leakage current Ile tester ".

Yet general unit does not have the lightning protection full-time staff, and there is potential safety hazard in online SPD security performance present situation for many years; And the SPD in important and unattended important places such as electric power, communication, national defence, the energy, measurement also has same potential safety hazard.Dynamic monitoring when SPD is carried out online in real time, judge the SPD combination property demand that is inevitable.

The utility model content

The purpose of this utility model is to overcome prior art tradition SPD module deterioration, losing efficacy can not real time on-line monitoring, the technical matters that system is existed potential safety hazard, a kind of integrated lightning-protection module with leakage current monitoring and discharge time function is provided, whether Real-time Alarm SPD device closes on to lose efficacy to online SPD runnability deterioration is carried out dynamic evaluation and early warning, eliminates the potential safety hazard of SPD; And having the counting thunder function, the novel intelligent SPD of 485 port communications is for the application of SPD provides more safe and reliable assurance.

For realizing above purpose, the utility model has been taked following technical scheme: a kind of integrated lightning-protection module with leakage current monitoring and discharge time function, include the SPD base, on this SPD base, be provided with the SPD Wiring port, be connected with the sensing coil gathered of signal that is used for real-time leakage current value signal of SPD and thunderbolt number of times at described SPD Wiring port side, also include the signal acquisition circuit that is electrically connected with sensing coil, this signal acquisition circuit is exported respectively and is electrically connected to AC/DC module and SPD pressure limiting module, SPD pressure limiting module is exported respectively and is electrically connected to rectification amplitude limit photoelectric isolation module and AC/DC module, and described rectification amplitude limit photoelectric isolation module also is electrically connected with the AC/DC module; The AC/DC module other end is electrically connected with data storage/processing module, and described data storage/processing module is exported respectively and is electrically connected to LED light, buzzing precaution device and 485 PORT COM, and above-mentioned AC/DC module also is electrically connected with 485 PORT COM.

On traditional modular SPD basis, integrated signal acquisition circuit to SPD leakage current value judges by micro treatment control system whether the SPD performance parameter value has been in the critical point of deterioration or inefficacy; On the basis that does not change traditional SPD mode of connection, at the SPD Wiring port ac current sensor coil is installed the signal of real-time leakage current value signal of SPD and thunderbolt number of times is gathered; Signal after the collection is handled through data storage/processing module through the A/D module converts again, carries out sound and light of alarm by single-chip computer control system, and 485 PORT COM are provided, and can monitor the on-line operation situation of SPD in real time.

Described AC/DC module comprises the AC/DC conversion module and the AC/DC insulating power supply of mutual electrical connection, and wherein signal acquisition circuit, AC/DC conversion module, data storage/processing module are electrically connected successively; SPD pressure limiting module, AC/DC insulating power supply, data storage/processing module are electrically connected successively; Rectification amplitude limit photoelectric isolation module is electrically connected with the AC/DC insulating power supply, and the AC/DC insulating power supply is electrically connected with 485 PORT COM.

The utility model compared with prior art has following advantage:

1, make the design of traditional lightning-protection module and leakage current monitoring integration, the energy intelligent alarm, and the counting thunder function is arranged.

2, online fully, real-time monitoring; The good Electromagnetic Compatibility of tool.

3, remind the user in time to change the SPD of deterioration, inefficacy, reduce the potential safety hazard that SPD brings.

4, be widely used in traditional modular SPD; Use the most suitable to key customer units such as national defence, petrochemical industry, combustion gas, communications.Integrated design when the deterioration critical value, is carried out sound and light alarm to traditional modular SPD voluntarily, reminds the user to change, rather than when the complete failure of SPD, and reminding user to replace when having complete hidden danger is prevented trouble before it happens.The user also understands the ruuning situation of SPD in real time by 485 ports.

Description of drawings

Fig. 1 is the lightning-protection module structural representation () of conventional art;

Fig. 2 is the lightning-protection module structural representation (two) of conventional art;

Fig. 3 is the utility model lightning-protection module structural representation ();

Fig. 4 is the utility model lightning-protection module structural representation (two);

Fig. 5 is the utility model SPD frame principles synoptic diagram;

Description of reference numerals: 1-sensing coil, 2-SPD are dialled slotting module, 3-SPD base, 4-guide-track groove, 5-SPD Wiring port, 6-deterioration pilot lamp, 7-LED pilot lamp, 8-buzzing precaution device, 9-485 PORT COM, 10-AC/DC module.

Embodiment

Below in conjunction with the drawings and specific embodiments content of the present utility model is described in further details.

Embodiment:

See also Fig. 3 to shown in Figure 5, a kind of integrated lightning-protection module with leakage current monitoring and discharge time function, include SPD base 3, be provided with the guide-track groove 4 of 35mm standard in the bottom, a side of this SPD base 3, be plugged with SPD on the SPD base 3 and dial slotting module 2 and deterioration pilot lamp 6, on this SPD base 3, also be provided with SPD Wiring port 5, SPD Wiring port 5 sides are connected with the sensing coil 1 gathered of signal that is used for real-time leakage current value signal of SPD and thunderbolt number of times, also include the signal acquisition circuit that is electrically connected with sensing coil 1, this signal acquisition circuit is exported respectively and is electrically connected to AC/DC module 10 and SPD pressure limiting module, SPD pressure limiting module is exported respectively and is electrically connected to rectification amplitude limit photoelectric isolation module and AC/DC module 10, and rectification amplitude limit photoelectric isolation module also is electrically connected with AC/DC module 10; AC/DC module 10 other ends are electrically connected with data storage/processing module, and data storage/processing module is exported respectively and is electrically connected to LED light 7, buzzing precaution device 8 and 485 PORT COM 9, and AC/DC module 10 also is electrically connected with 485 PORT COM 9.

The AC/DC module 10 of present embodiment comprises the AC/DC conversion module and the AC/DC insulating power supply of mutual electrical connection, and wherein signal acquisition circuit, AC/DC conversion module, data storage/processing module are electrically connected successively; SPD pressure limiting module, AC/DC insulating power supply, data storage/processing module are electrically connected successively; Rectification amplitude limit photoelectric isolation module is electrically connected with the AC/DC insulating power supply, and the AC/DC insulating power supply is electrically connected with 485 PORT COM 9.

The leakage current monitoring of the integrated lightning-protection module of present embodiment and the function of discharge time are the online in real time leakage current value and the excess current values of gathering lightning-protection module by sensing coil 1, signal acquisition circuit, and by AD/DC module 10 conversion and the little processing of single-chip microcomputer (51 series) system modules, realize the lightning-protection module Realtime Alerts, by 485 PORT COM, 9 communication discharge time functions, and monitor the on-line operation situation of lightning-protection module in real time.

Above-listed detailed description is at the specifying of the utility model possible embodiments, and this embodiment is not in order to limiting claim of the present utility model, does not allly break away from the equivalence that the utility model does and implements or change, all should be contained in the claim of this case.

Claims

1. integrated lightning-protection module with leakage current monitoring and discharge time function, include SPD base (3), on this SPD base (3), be provided with SPD Wiring port (5), it is characterized in that: be connected with the sensing coil (1) gathered of signal that is used for real-time leakage current value signal of SPD and thunderbolt number of times at described SPD Wiring port (5) side, also include the signal acquisition circuit that is electrically connected with sensing coil (1), this signal acquisition circuit is exported respectively and is electrically connected to AC/DC module (10) and SPD pressure limiting module, SPD pressure limiting module is exported respectively and is electrically connected to rectification amplitude limit photoelectric isolation module and AC/DC module (10), and described rectification amplitude limit photoelectric isolation module also is electrically connected with AC/DC module (10); AC/DC module (10) other end is electrically connected with data storage/processing module, described data storage/processing module is exported respectively and is electrically connected to LED light (7), buzzing precaution device (8) and 485 PORT COM (9), and above-mentioned AC/DC module (10) also is electrically connected with 485 PORT COM (9).

2. the integrated lightning-protection module that installs leakage current monitoring and discharge time additional as claimed in claim 1, it is characterized in that: described AC/DC module (10) comprises the AC/DC conversion module and the AC/DC insulating power supply of mutual electrical connection, and wherein signal acquisition circuit, AC/DC conversion module, data storage/processing module are electrically connected successively; SPD pressure limiting module, AC/DC insulating power supply, data storage/processing module are electrically connected successively; Rectification amplitude limit photoelectric isolation module is electrically connected with the AC/DC insulating power supply, and the AC/DC insulating power supply is electrically connected with 485 PORT COM (9).