CN207251120U - A kind of safety-type lightning prevention junction cabinet - Google Patents

Abstract

A kind of safety-type lightning prevention junction cabinet, including cabinet, and the lighting-proof branch base and lightning-protection module being arranged in cabinet；Lighting-proof branch base includes the line branch terminal for junction chamber internal/external signal cable, for the lightning protection terminal for lightning-protection module grafting and the lightning protection ground wire terminal for connecting lightning protection ground wire；Floor installation plate is provided with cabinet, lighting-proof branch base is provided with floor installation plate, lightning-protection module is plugged on the lightning protection terminal of lighting-proof branch base, lightning-protection module includes the lightning protection circuit that varistor and discharge tube are respectively welded to dropout connector both ends composition with low temperature solder materials, and the spring for pushing or pulling to discharge tube, making discharge tube maintain the potential energy for departing from the dropout connector.The lightning protection circuit of lightning-protection module in lightning prevention junction cabinet prevents overcurrent short-circuit function with dual, and the discharge tube of use has anti-short circuit isolation band, when having overcurrent by protection cable, can prevent that signal cable is short-circuit, have high reliability and security.

Description

A kind of safety-type lightning prevention junction cabinet

Technical field

The invention belongs to lightning protection field, a kind of specifically disclosed lighting-proof branch for applying to railway signal system lightning protection Cabinet.

Background technology

With the process of urbanization, track transportation industry develops rapidly, due to the convenience of track traffic, economy, fire Car or subway are trip instrument by more and more people's prioritizing selections.For this reason, reliability, security people to track traffic There is the requirement of higher.In general, Lightning Disaster causes equipment fault, it is an important factor for influencing track traffic reliability.Existing skill In art, substitute noseplate using lightning prevention junction cabinet and lightning protection is carried out to signal cable, achieve fairly good effect.But Lightning prevention junction cabinet also breaks down and influences the operation of train in itself, and the letter of many signalling arrangements has been concentrated in lightning prevention junction cabinet Number cable, when short trouble occurs for the lightning protection device in lightning prevention junction cabinet, by signal cable and ground short circuit, cause signalling arrangement therefore Barrier, influences train normal operation.Under extreme case, the high current of lightning-protection module short trouble causes component high fever and triggers and catch fire Event, existing lightning prevention junction cabinet there are reliability, security is not high the problem of；Signal cable in lightning prevention junction cabinet is each other Interference is there may be, causes signal entanglement, influences train normal operation.In the prior art, a kind of reliability, security are lacked High lightning prevention junction cabinet.

The content of the invention

The problem of causing signalling arrangement failure for the lightning protection device short circuit of prior art lightning prevention junction cabinet, the utility model carries For a kind of reliability, safe safety-type lightning prevention junction cabinet.

The utility model solve technical problem technical solution be：Including cabinet, and the lightning protection being arranged in cabinet point Line base and lightning-protection module；The lighting-proof branch base includes the line branch terminal for junction chamber internal/external signal cable, is used for Lightning protection terminal for lightning-protection module grafting and the lightning protection ground wire terminal for connecting lightning protection ground wire；Floor installation is provided with cabinet Plate, is provided with lighting-proof branch base on floor installation plate, lightning-protection module is plugged on the lightning protection terminal of lighting-proof branch base, described Lightning-protection module include with low temperature solder materials by varistor and discharge tube be respectively welded at a dropout connector both ends form Lightning protection circuit, and push or pull to discharge tube, discharge tube is maintained the potential energy for departing from the dropout connector Spring.The connecting component of varistor and discharge tube is welded with low temperature solder materials, when occurring overcurrent in lightning protection circuit extremely Varistor and the fever of/discharge tube, when temperature reaches low temperature solder materials fusing point, circuit is by acting force of the spring from varistor Or/and the weld of discharge tube and dropout connector disconnects, preventing temperature from continuing rise causes line short；Lightning-protection module is being pressed With having a low temperature trip point respectively at dropout connector and at discharge tube and dropout connector, lightning-protection module has quick resistance Dual heat protection function, prevents that protected circuit is short-circuit, the utility model has very high safety-type.

The further technical solution of the utility model is：The discharge tube is safety-type discharge tube, including electrode, porcelain tube And electronic emission material；The electrode forms confined space with porcelain tube, is equipped with and is placed in filled with gas, electrode in confined space Boss in confined space, electronic emission material are fixed on the boss of the electrode, and the porcelain tube inner wall is provided with conductive strips, In confined space anti-short circuit isolation band is equipped between the side of electrode and porcelain tube inner wall.The fault mode of discharge tube also has short Road situation, it is usually that metal on electrode produces high temperature melt by high current and is sprayed on magnetic tube inner wall, passes through magnetic tube Two electric pole short circuits together, are set anti-short circuit isolation band by inner wall in discharge tube, and magnetic tube inner wall is sprayed to when electrode melting When, due to the presence of anti-short circuit isolation band, prevent two electrodes from being linked together generation by magnetic tube inner wall by molten metal Short trouble, prevents by the short circuit of protection signal cable, the further security for improving the utility model lightning prevention junction cabinet.

Another embodiment of the utility model is：It is additionally provided with the lighting-proof branch base and electrically connects with line branch terminal The collection terminal for collection signal cable signal connect, gathers the collection being plugged with terminal for collection signal cable signal Module；Further include with acquisition module communication connection in the cabinet and be used to provide signal cable connected device Working status, early warning, the harvester module of warning message.Acquisition module is to being connected in the signal cable of lighting-proof branch base Signal is acquired, and after the signal of collection is done preliminary treatment, harvester module, harvester module are sent to communication modes It is further to received signal to be handled, then, there is provided the working status of connected device, early warning, warning information.Equipment Failure generally has a progressive formation, by the signal of collecting device signal cable, the variation tendency of signal Analysis, judges equipment Working status and following trend, can appreciate that the failure of equipment, take treatment measures in time, can prevent trouble before it happens, this practicality New lightning prevention junction cabinet has very high safety and reliability.

Another embodiment of the utility model is：Cable fixed plate is provided with cabinet, the cable fixed plate is set There is the shielding earth copper bar including the wire cable fixing clamp for fixed signal cable and connection signal cable shielded layer.External signal Cable enters inside cabinet, is fixed first at cable fixed plate with wire cable fixing clamp and proper alignment of standardizing, and herein will The shielded layer of cable is peeled off, and the shielded layer of stripping is connected on shielding earth copper bar, prevents external interference signals from entering cabinet It is interior.

Another embodiment of the utility model is：The cable fixed plate includes setting gradually for fixed signal cable Armouring shielded layer the first cable fixed plate, for the second cable fixed plate of the internal layer shielded layer of fixed signal cable, use In the 3rd cable fixed plate of the core cable shielded layer of fixed signal cable.Signal cable is gradually fixed after entering in cabinet with cable Card is fixed and peels off shielded layer, and shielded layer is connected on corresponding shielding earth copper bar, the fixation of signal cable and shielding effect Fruit more preferably, prevents that interference performance is good.

Another embodiment of the utility model is：There is lighting-proof branch base the one side of lightning protection terminal to include using in cabinet In the metal raceway for being laid with signal cable, the lightning protection ground wire copper being electrically connected with lightning protection ground wire terminal is provided with metal raceway Bar.Signal cable is layed in metal raceway after entering in cabinet, until being connected to the corresponding distribution terminal of lighting-proof branch base On son, signal cable has good shield effectiveness in metal raceway, prevents from disturbing with external signal between signal cable.

Another embodiment of the utility model is：The cabinet includes frame, and removably is fixed with frame Head cover, the bottom cover of connection, left plate, right plate, front door, Rear Door；The head cover and/or bottom cover are equipped with signal cable Wire inlet/outlet hole.The outer surface feature of cabinet, which is manufactured into, can dismantle mode, be convenient for changing, and easily quickly meet the outer of different clients Sight demand.

Another embodiment of the utility model is：The bottom of cabinet bulk is additionally provided with the use being connected with the bottom cover In the base for adjusting cabinet height.Set base to be used for the overall height for adjusting cabinet, can quickly meet the need of different clients Ask.

The good effect of the utility model is：The lightning protection circuit of lightning-protection module in lightning prevention junction cabinet has dual prevented Short circuit current function, the discharge tube of use also have anti-short circuit isolation band, when having overcurrent by protection cable, can prevent letter Number cable short circuit, has high reliability and security.Acquisition module and harvester module are plugged with lighting-proof branch base Communication, realizes and the equipment for being connected to signal cable on lighting-proof branch base is acquired, is handled, is monitored, can provide equipment Working status, early warning, warning information.It is neat that signal cable fixes specification, prevents signal cable mutual and exterior interference；Cabinet The surface part of body is connected using removably with frame, and bottom sets base to adjust cabinet overall height, can quickly expire The demand of sufficient different clients.

Below in conjunction with the drawings and specific embodiments, the present invention will be further described.

Brief description of the drawings

Fig. 1 is the utility model cabinet schematic diagram.

It is originally Fig. 1 cabinet exploded perspective views that Fig. 2, which is,.

Fig. 3 dismantles cabinet body frame component front schematic view for the utility model, unassembled lighting-proof branch base in figure.

Fig. 4 dismantles cabinet body frame component side schematic view for the utility model, and lighting-proof branch base, lightning protection are equipped with figure Module, acquisition module.

Fig. 5 coordinates assembling schematic diagram for the utility model lighting-proof branch base and lightning-protection module, acquisition module.

Fig. 6 coordinates assembling schematic diagram for the utility model lighting-proof branch base and lightning-protection module, acquisition module.

Fig. 7 is the lightning protection circuit principle schematic of the utility model lightning-protection module.

Fig. 8 is the safety-type discharge tube structure schematic diagram of the utility model lightning-protection module.

In figure：100 cabinets, 110 frames, 120 head covers, 130 bottom covers, 140 left plates, right plate, 150 front doors, back door Plate, 160 bases, 111 columns, 121 wire inlet/outlet holes, 200 cable fixed plates, 210 wire cable fixing clamps, 220 shielding earth copper bars, 300 floor installation plates, 310 base installing holes, 320 metal raceways, 330 lightning protection ground wire copper bars, 400 lighting-proof branch bases, 410 points Line terminals, 420 lightning protection terminals, 430 lightning protection ground wire terminals, 440 collection terminals, 450 acquisition modules, 500 lightning-protection modules, 510 pressures Quick resistance, 520 discharge tubes, 530 dropout connectors, 531,532 eutectic welding contacts, 540 springs, 521 electrodes, 522 magnetic tubes, 523 Electronic emission material, 524 boss, 525 conductive strips, 526 anti-short circuit isolation bands, 600 harvester installing plates, 610 harvester modules.

Embodiment

The utility model is described in further details below in conjunction with the drawings and specific embodiments.It should be noted that：This The combination of technical characteristic or technical characteristic described in embodiment is not construed as isolated, they can be by mutual group Close so as to reach superior technique effect, be all appreciated that it is the scope of the utility model.

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, wherein Fig. 2 is the exploded perspective view of cabinet, and Fig. 3 removes external frame for cabinet Front schematic view afterwards, is fitted without lighting-proof branch base in Fig. 3, Fig. 4 is the side schematic view for removing external frame, is installed in figure Lighting-proof branch base and its lightning-protection module, acquisition module.Safety-type lightning prevention junction cabinet, including cabinet 100, lighting-proof branch base 400th, lightning-protection module 500；As shown in Figure 5, Figure 6, the lighting-proof branch base 400 includes being used for junction chamber internal/external signal cable Line branch terminal 410, the lightning protection terminal 420 of lightning-protection module and the lightning protection ground wire terminal for connecting lightning protection ground wire described in grafting 430, the line branch terminal 410 is separately positioned on two opposite faces of lighting-proof branch base 400 with lightning protection terminal 420, is prevented Thunder module 500 is plugged on lightning protection terminal 420；Line branch terminal 410 divides for inlet wire line branch terminal and outlet line branch terminal, railway room After the signal cable of external signal equipment is connected to inlet wire line branch terminal, is drawn from outlet line branch terminal and be connected to corresponding indoor letter Number equipment；Lightning-protection module 500 is plugged on the lightning protection terminal 420 of lighting-proof branch base 400, and carrying out thunder and lightning to signal cable prevents Shield.

As shown in Fig. 2, at the top of the cabinet or bottom offers the wire inlet/outlet hole 121 for signal cable, such as Fig. 3 institutes Show, cable fixed plate 200 and floor installation plate 300 are longitudinally disposed with cabinet；In the cable fixed plate 200 Be provided with for fixed signal cable wire cable fixing clamp 210 and collect connection signal cable shielded layer shielding earth copper bar 220；There is base installing hole 310 on the floor installation plate 300, the lighting-proof branch base 400 has lightning protection terminal 420 One side be fixed on through base installing hole 310 on floor installation plate；On floor installation plate 300, lighting-proof branch base 400 has The one side for having lightning protection terminal 420 is provided with the lightning protection ground wire copper bar 330 for collecting connection lightning protection ground wire terminal 430；In cabinet It is additionally provided with the metal raceway 320 for being respectively used to be laid with inlet wire signal cable and outlet signal cable.

Cable fixed plate 200 is arranged in cabinet is screwed in cabinet close to top or bottom neighbouring position, both ends It is interior, it is provided with cable fixed plate 200 for the wire cable fixing clamp 210 of fixed signal cable and for connecting signal cable shielding The shielding earth copper bar 220 with multiple binding posts of layer.Signal cable passes through top or the entrance hole 121 of bottom enters cabinet It is interior to be fixed signal cable with wire cable fixing clamp 210 to cable fixed plate 200, make signal cable irremovable and neat specification Change arrangement；The shielded layer of signal cable is connected electrically on the binding post of shielding earth copper bar 220 after peeling off.Enter cabinet from outdoor Signal cable be usually multi-core cable, have armouring shield external layer, internal layer shielded layer, every cored wire also have individually shielding Layer, i.e. core cable shielded layer, usually have three layers of shielding；Accordingly cable fixed plate 200 is arranged to three layers, exterior inlet wire signal wire Cable is fixed with wire cable fixing clamp 210 at first layer cable fixed plate 200 and peels off armouring shield external layer, the shield external layer of stripping It is connected on shielding earth copper bar 220；Inlet wire signal cable be laid with second layer cable fixed plate 200 with wire cable fixing clamp 210 After fixation, internal layer shielded layer is peeled off, the internal layer shielded layer of stripping is connected on Article 2 shielding earth copper bar 220；Inlet wire line Cable continues to be fixed with wire cable fixing clamp 210 at laying to third layer cable fixed plate 200, and the shielded layer of cored wire is peeled off, is peeled off Cored wire shielded layer be connected on Article 3 shielding earth copper bar 220.Three shielding earth copper bar 220 collects connection in cabinet It is electrically connected to ground after together with cabinet exterior shield.After signal cable enters in cabinet, in order, gradually fix and peel off shielding Layer, being conducive to signal cable prevents interfering with each other for signal cable.Peeled off for the shielded layer of cored wire, signal can also be arranged on Before cable is connected to line branch terminal 410, the shielded layer of stripping is connected on corresponding shielding earth copper bar 220, in this way, can be most Limits prevent signal cable to be interfered.

The floor installation plate 300 is arranged at longitudinal middle point in cabinet 100, according to lighting-proof branch base 400 Quantity can set multilayer base installing plate 300 by longitudinal arrangement successively；Multiple use are disposed with every layer of floor installation plate 300 In the base installing hole 310 of installation lighting-proof branch base 400, usually each floor installation plate 300 is provided with 6-13 base peace Hole 310 is filled, the one side that the lighting-proof branch base 400 has lightning protection terminal 420 is located at bottom through the base installing hole The side of seat installing plate 300, the one side with line branch terminal 410 are located at the opposite side of the floor installation plate 300；Floor installation Plate 300 isolates lightning-protection module 500 and line branch terminal 410, prevents lightning-protection module to the signal cable that is connected on line branch terminal Interference.Lighting-proof branch base 400 has the one side of lightning protection terminal 420, is provided between two lighting-proof branch bases 400 point The metal raceway 320 of inlet wire signal cable and outlet signal cable Yong Yu be laid with, is divided into inlet wire metal raceway and outlet metal Wire casing；The quantity that metal raceway is set is opposite with 400 quantity of lighting-proof branch base of 300 transversely arranged setting of floor installation plate Should.Inlet wire metal raceway is used to be laid with inlet wire signal cable and has shielding action to it, and outlet metal raceway is used to be laid with outlet Signal cable simultaneously has shielding action to it.Inlet wire metal raceway extends longitudinally to all floor installation plates 300, outlet metal raceway Longitudinally covered all cable fixed plates 200 and floor installation plate 300 are simultaneously through to bottom at the top of cabinet；Inlet wire and outlet gold Belong in wire casing and cable-through hole is provided with 300 relevant position of floor installation plate, signal cable is electrically connected by the cable-through hole On line branch terminal 410 on to lighting-proof branch base 400；Lightning protection ground wire copper bar 330 is additionally provided with each inlet wire metal raceway, The lightning protection ground wire copper bar is electrically connected with the lightning protection ground wire terminal 430 in lighting-proof branch base 400, all lightning protection ground wire copper Bar, which collects, to be connected together and then is drawn out on the outer lightning protection ground wire of cabinet.Inlet wire metal raceway and outlet metal are used in cabinet Wire casing is laid with inlet wire signal cable and outlet signal cable respectively, can effectively prevent the mutual of inlet wire and outlet signal cable Interference and external signal interference.

As shown in Fig. 2, the cabinet includes the frame 110 being made with section bar, the head cover formed by board making 120, bottom cover 130, left plate, right plate 140, front door, Rear Door 150.The head cover, bottom cover, left plate, right plate, Front door, Rear Door are fastened on the outer surface that cabinet is formed on the frame with dismountable mode；Cabinet surrounding and on Lower surface portion part can be dismantled, and when client changes cabinet appearance appearance requirement, only replace head cover, the bottom of outer surface feature Cover, left plate, right plate, front door, Rear Door, rapidly adapt to the appearance requirement of different clients.Can also be by complicated, system Frame and its internal part well in advance when making trouble become prefabricated component, and the requirement according to client is customized to corresponding appearance table again Face component quickly meet can with various demands.Cabinet includes two parts of prefabricated component and customization part, only change customization part, The quick change for being adapted to market requires.The base of frame is provided with the base 160 for adjusting cabinet height, cabinet Frame is fixed on dismountable mode on the base.The overall height of cabinet is adjusted with the different base of dimensional height, Meet different clients to cabinet height requirement.The dismounting fixed form, can make to be screwed detachably, can also make Fixed with chain and detachably, can also be that the mode of any other aspect dismounting is fixedly connected.Set on the head cover or bottom cover Wire inlet/outlet hole 121 is equipped with, cabinet is passed in and out for signal cable.

Medium position at left and right sides of the lower portion is each provided with one and extends to frame roof from bottom Mount bar longitudinal direction column 111, the column is L-shaped, and a L-type side fastened by screw of its central post is in the frame On；Another L-type side is provided with the square hole of a row standard on column, configuration nut in square hole, the cable fixed plate 200, Floor installation plate 300 is coordinated by square hole nut and screw to be fastened on L-type column.Fixed laminate is installed in this way, Easy to dismantle and adjust the position of laminate later.

As shown in fig. 7, the lightning-protection module 500 is safety-type lightning-protection module.Have in the safety-type lightning-protection module Have by varistor 510, dropout connector 530,520 lightning protection circuit in series of discharge tube, the varistor 510, put Fulgurite 520 is welded on 530 both ends of dropout connector with low temperature solder materials, has two eutectic welding contacts 531,532； And push or pull to discharge tube, discharge tube is maintained the spring 540 for departing from the dropout connector potential energy, i.e. bullet Spring 540 is connected on discharge tube and applies external force to discharge tube, discharge tube and/or varistor is had the disengaging company of dropout The potential energy of fitting, the spring can produce thrust on the surface of discharge tube with apical grafting or one end hangs over discharge tube In corresponding mechanism, pulling force is produced to discharge tube.The spring can also be substituted with other elastomeric elements.The low-temperature welding Between 110 DEG C to 160 DEG C of the melt temperature of material, usually using the low temperature solder materials of 145 DEG C of fusing points.Using low-temperature welding material Varistor 510 and discharge tube 520 are welded on 530 both ends of dropout connector by material, pressure-sensitive when there is overcurrent to make in lightning protection circuit When resistance 510 or 520 temperature of discharge tube are increased to low temperature solder materials fusing point, spring makes discharge tube or varistor depart from dropout Connector, lightning protection circuit can be disconnected from any one low-temperature welding point, prevent protected signal line short circuit, lightning-protection module is because having Two eutectic welding contacts and there is dual overcurrent heat protection function.Current limliting is additionally provided with the dropout connector 530 to lead Electric section, the lightning protection circuit disconnect at current limliting conductive segment when meeting with lightning current, prevent that protected signal wire is short out Road, makes lightning-protection module have lightning current safeguard function.One end shape design and the piezoresistance electrode phase of dropout connector 530 Matching, the shape that the design of other end shape matches with electric discharge pipe electrode, to facilitate welding.

As shown in figure 8, the discharge tube 520 is safety-type discharge tube, the safety-type discharge tube includes electrode 521, porcelain tube 522 and electronic emission material 523, the electrode 521 form confined space with porcelain tube 522, are filled in confined space There is gas, electrode 521 is equipped with the boss 524 being placed in confined space, and electronic emission material 523 is fixed on the convex of the electrode On platform 524,522 inner wall of porcelain tube is provided with conductive strips 525, is located in confined space in side and the porcelain tube 522 of electrode 521 Being equipped between wall prevents 522 inner wall of magnetic tube and the anti-short circuit isolation band 526 of the short circuit of electrode 521.Equipped with anti-short circuit isolation band 526 Discharge tube failure mode is only in high-impedance state, and short circuit phenomenon will not occur using this discharge tube in lightning protection circuit.

As shown in Figure 3, Figure 4, harvester installing plate 600 is additionally provided with cabinet 100, is set on harvester installing plate 600 It is equipped with harvester module 610；Line branch terminal side is provided with collection terminal 440 on lighting-proof branch base 400, gathers terminal 440 On be plugged with acquisition module 450.Acquisition module 450 is plugged on collection terminal 440 to the signal by lighting-proof branch base 400 The simulating of cable, numeral or switching signal are monitored collection, and the progress preliminary treatment of the signal to collecting；Acquisition module 450 connect with the communication of harvester module 610, and signal after acquisition process is sent to harvester module 610 by signal cable, Harvester module 610 is further processed received signal, analyzes, and judges that signal cable connected device works It is whether normal, or have certain variation tendency, signalling arrangement failure is alerted or early warning.Lightning prevention junction cabinet, which has, to be alerted, is pre- Alert function.

External signal cable enters inside cabinet by the entrance hole of cabinet head cover or bottom cover, at cable fixed plate 200 Fixed with wire cable fixing clamp 210 and proper alignment of standardizing；The shielded layer of cable is peeled off here and is connected to shielding earth On copper bar 220, signal cable is layed in inlet wire metal longitudinally disposed on floor installation plate 300 after reaching floor installation plate 300 Continue to extend in wire casing, until being connected on the corresponding line branch terminal 410 of lighting-proof branch base 400, lightning-protection module is to signal Circuit carries out lightning protection, and acquisition module 450 is acquired processing to the signal of signal cable；Hereafter, signal cable is from lightning protection The outlet terminal side of wire separating support 400 is drawn, and is laid with longitudinal outlet metal raceway, the outlet hole most afterwards through head cover or bottom cover with External signal equipment is connected.Signal cable, until being left at outlet hole, is entirely lived through from entering in lightning prevention junction cabinet Journey does not occur to interfere with each other between signal cable, has very high antijamming capability there is no the situation that intersects.And institute For the lightning-protection module used for safety-type lightning-protection module, the discharge tube used prevents signal cable because of lightning protection for safety-type discharge tube Guard block failure and it is short-circuit, the utility model has very high antijamming capability and security and can monitor signal cable The working status of connected device simultaneously gives timely early warning, alarm.

The scope of the utility model preferred embodiment includes other realization, wherein can not wrap in the order presented Include according to involved function by it is basic at the same time in the way of or in the opposite order, carry out perform function, this should be by the utility model Embodiment technical field technician understanding.Description in embodiment is only exemplary, not as Limitation, the technical solution that those skilled in the art can be obtained by understanding embodiment technology contents, is to belong to this practicality newly The category of type.

Claims (10)

1. a kind of safety-type lightning prevention junction cabinet, including cabinet, and the lighting-proof branch base and lightning-protection module being arranged in cabinet； The lighting-proof branch base includes the line branch terminal for junction chamber internal/external signal cable, for for the anti-of lightning-protection module grafting Thunder terminal and the lightning protection ground wire terminal for connecting lightning protection ground wire；Floor installation plate is provided with cabinet, is set on floor installation plate Lighting-proof branch base is equipped with, lightning-protection module is plugged on the lightning protection terminal of lighting-proof branch base, it is characterised in that：The lightning protection Module includes varistor and discharge tube are respectively welded to the lightning protection of dropout connector both ends composition with low temperature solder materials Circuit, and the spring for pushing or pulling to discharge tube, making discharge tube maintain the potential energy for departing from the dropout connector.

2. safety-type lightning prevention junction cabinet according to claim 1, it is characterised in that：The discharge tube is safety-type electric discharge Pipe, including electrode, porcelain tube and electronic emission material；The electrode forms confined space with porcelain tube, and confined space is interior filled with gas Body, electrode are equipped with the boss being placed in confined space, and electronic emission material is fixed on the boss of the electrode, the porcelain tube Inner wall is provided with conductive strips, and anti-short circuit isolation band is equipped between the side of electrode and porcelain tube inner wall in confined space.

3. safety-type lightning prevention junction cabinet according to claim 1, it is characterised in that：Also set on the lighting-proof branch base The collection terminal for collection signal cable signal being electrically connected with line branch terminal is equipped with, gathers and is plugged with terminal for adopting Collect the acquisition module of signal cable signal；Further include with acquisition module communication connection in the cabinet and be used to provide Working status, early warning, the harvester module of warning message of signal cable connected device.

4. according to the safety-type lightning prevention junction cabinet described in claim 1 or 2 or 3, it is characterised in that：Cable is provided with cabinet to consolidate Fixed board, the cable fixed plate are provided with including the wire cable fixing clamp for fixed signal cable and connection signal cable shielding The shielding earth copper bar of layer.

5. safety-type lightning prevention junction cabinet according to claim 4, it is characterised in that：The cable fixed plate is included successively First cable fixed plate of the armouring shielded layer for fixed signal cable, the internal layer shielded layer for fixed signal cable are set The second cable fixed plate, the 3rd cable fixed plate for the core cable shielded layer of fixed signal cable.

6. according to the safety-type lightning prevention junction cabinet described in claim 1 or 2 or 3, it is characterised in that：The lighting-proof branch bottom in cabinet The one side that seat tool has lightning protection terminal includes being used to be laid with the metal raceway of signal cable, is provided with metal raceway and lightning protection ground wire The lightning protection ground wire copper bar that terminal is electrically connected.

7. according to the safety-type lightning prevention junction cabinet described in claim 1 or 2 or 3, it is characterised in that：The cabinet includes frame Frame, and head cover, the bottom cover that removably is fixedly connected with frame, left plate, right plate, front door, Rear Door；Described Head cover and/or bottom cover are equipped with signal cable wire inlet/outlet hole.

8. safety-type lightning prevention junction cabinet according to claim 7, it is characterised in that：The bottom of cabinet bulk be additionally provided with The base for being used to adjust cabinet height that the bottom cover is connected.

9. safety-type lightning prevention junction cabinet according to claim 4, it is characterised in that：The cabinet includes frame, and Head cover that removably is fixedly connected with frame, bottom cover, left plate, right plate, front door, Rear Door；The head cover and/ Or bottom cover is equipped with signal cable wire inlet/outlet hole.

10. safety-type lightning prevention junction cabinet according to claim 4, it is characterised in that：Lighting-proof branch base has in cabinet The one side for having lightning protection terminal includes being used for the metal raceway for being laid with signal cable, is provided with and lightning protection ground wire terminal in metal raceway The lightning protection ground wire copper bar of electric connection.