CN104796080A - Automatic hard fire-proof junction box specially used for photovoltaic devices - Google Patents

Automatic hard fire-proof junction box specially used for photovoltaic devices Download PDF

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Publication number
CN104796080A
CN104796080A CN201510244691.4A CN201510244691A CN104796080A CN 104796080 A CN104796080 A CN 104796080A CN 201510244691 A CN201510244691 A CN 201510244691A CN 104796080 A CN104796080 A CN 104796080A
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CN
China
Prior art keywords
glass tube
fire
junction box
mechanical
fire prevention
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Granted
Application number
CN201510244691.4A
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Chinese (zh)
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CN104796080B (en
Inventor
龚再华
曹正兰
龚华
何力
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Wuxi City Yue Zhong Electromechanical Engineering Co Ltd
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Wuxi City Yue Zhong Electromechanical Engineering Co Ltd
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Priority to CN201510244691.4A priority Critical patent/CN104796080B/en
Publication of CN104796080A publication Critical patent/CN104796080A/en
Application granted granted Critical
Publication of CN104796080B publication Critical patent/CN104796080B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Photovoltaic Devices (AREA)

Abstract

The invention provides an automatic hard fire-proof junction box specially used for photovoltaic devices. The automatic hard fire-proof junction box specially used for photovoltaic devices comprises a junction box body, a diode, a guide strip and a mercury liquid glass tube lock, wherein the diode and the mercury liquid glass tube lock are arranged at the bottom inside the junction box body in an insulation manner, the guide strip is sequentially connected with the diode and the mercury liquid glass tube lock, and the diode and the mercury liquid glass tube lock are communicated with the outside of the junction box by virtue of the guide strip. A mechanical physical fire-proof mechanism with the highest reliability is adopted at the end of the junction box without adding an assembly package production process; and the automatic hard fire-proof junction box specially used for photovoltaic devices is designed only for preventing a fire of the mercury liquid glass tube lock added on the traditional junction box during production of the junction box.

Description

The Special Automatic hard fire-proof terminal box of photovoltaic
Technical field
The present invention relates to a kind of fire prevention terminal box, particularly relate to the Special Automatic hard fire-proof terminal box of a kind of photovoltaic.
Background technology
Along with country is further to attention and the support of energy-conserving and environment-protective industry, domestic Ge Jia enterprise develops wind-powered electricity generation in power, sun generating etc.; For solar energy, from 2008 so far, domestic with multi-form promotion green solar power engineering such as golden sun engineering, ARCHITECTURE OF DISTRIBUTED ENGINEERING DBMS, surface power station, power stations, roof, with regard to 2014, according to Chinese Credit actuarial, install about 44GW in the whole world, wherein China installs about 10.5GW, and estimate that global power plant construction gross investment is about 4,400 hundred million yuan, China is about 1,050 hundred million yuan, within 2015, estimate global 55GW, China guards as 15GW.
At present, be electrically connected with 1kv-1*4mm direct current cables because photovoltaic plant electric power collects with conveying 70%, each generator unit will be using electrical connector as cut-in point position; Because direct current cables distribution is comparatively expanded, electrical connector is too much, the reasons such as electric short circuit, construction reason and environmental aging, very easily cause electrical fire, and this direct current component transmission voltage grade one is removed as 600V to 1000V, unavailable general water is put out a fire, such causing more large-arealy crosses electricity and jeopardizes fire extinguishing life safety, again because photovoltaic plant area is excessive, one removes conventional 3MW power station about takes up an area 100 mu, with other fire-fighting mode too less than efficiency, because electrification in high voltage can not adopt above-water method, sometimes can only soon power station burning and without countermeasure; Therefore the Timeliness coverage at the beginning of power station fire is shaping just seems and is important, and the junction box of routine and photovoltaic panel installation is at present by diode, flow guide bar, and junction block forms, and all electrical connections are all employing welding; Once it is overheated to run into diode, internal short-circuit, the problems such as photovoltaic panel hot spot, because there is no fire protection design, one removes and only has by the time overheated appearances generation peculiar smell or on firely just to find afterwards, but because a photovoltaic field floor space is excessive, one removes at 500 mu to about 4000 mu, often the initial stage on fire cannot be felt and found out the very first time, by the time conventional floods fire mode cannot be adopted again when fiery formula expands due to electric loop band high pressure, be located in deserted mountain can only soon burnout, the problems referred to above are solved in the urgent need to us.
Summary of the invention
The object of this invention is to provide the Special Automatic hard fire-proof terminal box of a kind of photovoltaic, solve to run into diode overheated, internal short-circuit, can not Timeliness coverage and cut off separately the problem of hidden danger terminal box power supply during the problems such as hot spot.
To achieve these goals, technical scheme of the present invention is to provide the Special Automatic hard fire-proof terminal box of a kind of photovoltaic, comprise junction box body, diode and flow guide bar, also comprise mercury solution glass tube lock, diode and the insulation of mercury solution glass tube lock are arranged on the inner bottom part of junction box body, and flow guide bar connects diode and mercury solution glass tube lock and successively by the ft connection of flow guide bar and terminal box.
Mercury solution glass tube lock comprises the mechanical flap of fire prevention, fire prevention mechanical pedestal and machinery energy storage mechanism, mechanical flap of preventing fires is communicated with flow guide bar with fire prevention mechanical pedestal grafting laminating, the inside of fire prevention mechanical pedestal is provided with the spring eye be communicated with mechanical flap of preventing fires, machinery energy storage mechanism is arranged in spring eye, machinery energy storage mechanism comprises mercury solution glass tube and spring, and the mercury solution glass tube laminating mechanical flap of fire prevention is also fixed on spring aperture and is enclosed in spring eye by the Spring Card of compression.
Spring eye is around the grafting part of the mechanical flap of fire prevention with fire prevention mechanical pedestal.
Mechanical flap of preventing fires is convex shape, and fire prevention mechanical pedestal is concave structure.
Machinery energy storage mechanism and flow guide bar insulation are arranged.
Operation principle of the present invention occurs hot class when body photovoltaic component terminal box, short circuit, during diode overheated terminal box overtemperature prelude on fire, the mercury solution glass tube lock of customization will make reflection to it, the 80-90 degree when exceeding or reach certain design temperature, mercury solution glass tube breaks amplifying due to several times of mercury solution volume by mercury solution glass tube lock; Mechanical spring stored energy mechanism all pins being customized mercury solution glass tube lock with the absorption affinity being greater than mechanical flap of preventing fires at ordinary times, when the mercury solution glass tube customized destroys, the spring of mechanical spring stored energy mechanism mechanical flap of just preventing fires ejects, cut off the loop of body electric flow guide bar and fire prevention mechanical pedestal, make electric current can not conducting; Because photovoltaic monopolizing characteristic determines, this photovoltaic module and this optical crosstalk photovoltaic assembly 20 pieces will all suspend, and export, prevented the generation of naked light fire without any electric current.
The invention has the beneficial effects as follows mechanicalness physics fire-resistant mechanism the highest from fire prevention un-terminated line box employing reliability under the prerequisite not increasing component package production technology, mechanism making only increases the effect of mercury solution glass tube lock formation fire preventing generation to conventional electrical connectors when terminal box is produced.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the present invention prevents fires mechanical flap structural representation;
Fig. 3 is the fire prevention mechanical pedestal structural representation that the present invention is equipped with machinery energy storage mechanism;
Wherein: 1-junction box body, 2-diode, 3-flow guide bar, 4-prevents fires mechanical flap, and 5-prevents fires mechanical pedestal, 6-spring, 7-mercury solution glass tube.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing, protection scope of the present invention is not limited only to the present embodiment.
Embodiment as shown in Figure 1, Figure 2 and Figure 3, the present embodiment provides a kind of photovoltaic Special Automatic hard fire-proof terminal box, comprise junction box body 1, diode 2, flow guide bar 3 and mercury solution glass tube lock, junction box body 1 and photovoltaic panel connection, diode 2 and mercury solution glass tube lock is arranged on the inner bottom part of junction box body 1 and junction box body 1 insulate, flow guide bar 3 connects diode 2 successively and mercury solution glass tube lock and passes through the ft connection of flow guide bar 3 realization and junction box body 1.
Mercury solution glass tube lock comprises the mechanical flap 4 of fire prevention, fire prevention mechanical pedestal 5 and machinery energy storage mechanism, mechanical flap 4 of preventing fires is inserted as the fire prevention mechanical pedestal 5 of concave structure for convex shape, fire prevention mechanical pedestal 5 and the mechanical flap 4 of fire prevention are made up of flame-retarded plastic and copper electric conducting material respectively, flow guide bar 3 is communicated with copper electric conducting material respectively, and mechanical flap 4 of preventing fires is communicated with copper electric conducting material with fire prevention mechanical pedestal 5 grafting laminating.
The groove outside of fire prevention mechanical pedestal 5 is surrounded with the spring eye be communicated with of fitting with mechanical flap 4 of preventing fires, machinery energy storage mechanism is arranged in spring eye, machinery energy storage mechanism comprises the mercury solution glass tube 7 and spring 6 that are full of mercury solution, the fire prevention machinery flap 4 that mercury solution glass tube 7 laminating is inserted also is fixed on spring aperture, is enclosed in spring eye by the spring 6 of compression card.
Machinery energy storage mechanism and flow guide bar insulation are arranged.
Glass tube is filled the mercury solution of full amount by the present embodiment mercury solution glass tube lock original paper, mercury solution glass tube lock is not any change at normal temperatures, when self and environment temperature rise to uniform temperature, during as 80-90 degree Celsius, make glass tube broken because several times of mercury solution volume amplify, and then card envelope restriction is lost to the spring 6 of mechanical compress, spring 6 is made upwards to put thrust to good use, because the release force after spring 6 compression is by the absorption affinity much larger than the mechanical flap 4 of fire prevention and the grafting of fire prevention mechanical pedestal 5, finally backed down the mechanical flap 4 of fire prevention, reach the function of cut-off loop,
Fire prevention mechanical pedestal 5 is made up of respectively part flame-retarded plastic and the copper electric conducting material of part, is arranged on by machinery energy storage mechanism in fire prevention mechanical pedestal 5; The effect of 5 at the bottom of fire prevention mechanical block mainly mercury solution glass tube lock that is fixing, that be electrically connected and customize is installed;
Mechanical flap 4 original paper of preventing fires also is made up of respectively part flame-retarded plastic and the copper electric conducting material of part, makes assembly mechanical flap 4 of preventing fires export electric energy and fire prevention mechanical pedestal 5 conducting, be sent to inverter after finally delivering to cable by flow guide bar 3; This mechanical flap 4 of preventing fires also is the actual act device that electric loop is cut off in fire prevention;
Flow guide bar 3 take copper as base, and surface is coated with a kind of electric current transfer passage of tin;
Mercury solution material thermalexpansioncoefficientα in 10-6/K 20 ° of C; Be 60.4 when 25 ° of C, be that in complete series material, thermal coefficient of expansion is maximum, be filled in mercury solution glass tube 7.

Claims (5)

1. the Special Automatic hard fire-proof terminal box of photovoltaic, comprise junction box body, diode and flow guide bar, it is characterized in that: also comprise mercury solution glass tube lock, diode and the insulation of mercury solution glass tube lock are arranged on the inner bottom part of junction box body, and flow guide bar connects diode and mercury solution glass tube lock and successively by the ft connection of flow guide bar and terminal box.
2. the Special Automatic hard fire-proof terminal box of photovoltaic according to claim 1, it is characterized in that: mercury solution glass tube lock comprises the mechanical flap of fire prevention, fire prevention mechanical pedestal and machinery energy storage mechanism, mechanical flap of preventing fires is communicated with flow guide bar with fire prevention mechanical pedestal grafting laminating, the inside of fire prevention mechanical pedestal is provided with the spring eye be communicated with mechanical flap of preventing fires, machinery energy storage mechanism is arranged in spring eye, machinery energy storage mechanism comprises mercury solution glass tube and spring, the mercury solution glass tube laminating mechanical flap of fire prevention is also fixed on spring aperture and is enclosed in spring eye by the Spring Card of compression.
3. the Special Automatic hard fire-proof terminal box of photovoltaic according to claim 2, is characterized in that: spring eye is around the grafting part of the mechanical flap of fire prevention with fire prevention mechanical pedestal.
4. the Special Automatic hard fire-proof terminal box of photovoltaic according to claim 2, it is characterized in that: mechanical flap of preventing fires is convex shape, fire prevention mechanical pedestal is concave structure.
5. the Special Automatic hard fire-proof terminal box of photovoltaic according to claim 2, is characterized in that: machinery energy storage mechanism and flow guide bar insulation are arranged.
CN201510244691.4A 2015-05-14 2015-05-14 The Special Automatic hard fire-proof rosette of photovoltaic Expired - Fee Related CN104796080B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510244691.4A CN104796080B (en) 2015-05-14 2015-05-14 The Special Automatic hard fire-proof rosette of photovoltaic

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Application Number Priority Date Filing Date Title
CN201510244691.4A CN104796080B (en) 2015-05-14 2015-05-14 The Special Automatic hard fire-proof rosette of photovoltaic

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CN104796080A true CN104796080A (en) 2015-07-22
CN104796080B CN104796080B (en) 2017-03-01

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2192919Y (en) * 1994-03-16 1995-03-22 龙碧庭 Mercury waterproof siren
JP3744530B1 (en) * 2004-08-03 2006-02-15 住友電装株式会社 Terminal box for solar cell module
JP2006310439A (en) * 2005-04-27 2006-11-09 Yukita Electric Wire Co Ltd Terminal box for solar cell module
CN201758373U (en) * 2010-07-30 2011-03-09 吕纪坤 Junction box for photovoltaic components
CN201927620U (en) * 2010-12-09 2011-08-10 阿特斯(中国)投资有限公司 Explosion-proof terminal box used on photovoltaic component
CN202259362U (en) * 2011-09-09 2012-05-30 苏州快可光伏电子股份有限公司 Intelligent junction box and solar power generation system
KR101158499B1 (en) * 2011-03-16 2012-06-20 주식회사 엘스콤 Junction box for a photovoltaic module manufactured by double shot injection
CN203851096U (en) * 2014-05-17 2014-09-24 江苏核新太阳能电力有限公司 Intelligent junction box
US20140301003A1 (en) * 2011-08-19 2014-10-09 Phoenix Contact Gmbh & Co. Kg Socket for a Solar Panel with a Protective Circuit
CN204559502U (en) * 2015-05-14 2015-08-12 无锡市越众机电工程有限公司 The Special Automatic hard fire-proof terminal box of photovoltaic

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2192919Y (en) * 1994-03-16 1995-03-22 龙碧庭 Mercury waterproof siren
JP3744530B1 (en) * 2004-08-03 2006-02-15 住友電装株式会社 Terminal box for solar cell module
JP2006310439A (en) * 2005-04-27 2006-11-09 Yukita Electric Wire Co Ltd Terminal box for solar cell module
CN201758373U (en) * 2010-07-30 2011-03-09 吕纪坤 Junction box for photovoltaic components
CN201927620U (en) * 2010-12-09 2011-08-10 阿特斯(中国)投资有限公司 Explosion-proof terminal box used on photovoltaic component
KR101158499B1 (en) * 2011-03-16 2012-06-20 주식회사 엘스콤 Junction box for a photovoltaic module manufactured by double shot injection
US20140301003A1 (en) * 2011-08-19 2014-10-09 Phoenix Contact Gmbh & Co. Kg Socket for a Solar Panel with a Protective Circuit
CN202259362U (en) * 2011-09-09 2012-05-30 苏州快可光伏电子股份有限公司 Intelligent junction box and solar power generation system
CN203851096U (en) * 2014-05-17 2014-09-24 江苏核新太阳能电力有限公司 Intelligent junction box
CN204559502U (en) * 2015-05-14 2015-08-12 无锡市越众机电工程有限公司 The Special Automatic hard fire-proof terminal box of photovoltaic

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Address after: 214000 Wuxi, Jiangsu province high waves East Road 999-2 layer fifteen

Applicant after: Jiangsu Yuezhong integrated science and Technology Co Ltd

Address before: 214000 Jiangsu City, Wuxi province Binhu District Building West Road, building A, room ten, room 1003, room 599

Applicant before: Wuxi City Yue Zhong electromechanical engineering Co., Ltd

CB03 Change of inventor or designer information

Inventor after: Gong Zaihua

Inventor after: Ma Xiaolun

Inventor after: Cao Zhenglan

Inventor after: Gong Hua

Inventor after: He Li

Inventor after: Wang Bin

Inventor before: Gong Zaihua

Inventor before: Cao Zhenglan

Inventor before: Gong Hua

Inventor before: He Li

COR Change of bibliographic data
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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170301

Termination date: 20200514