CN107294078A - A kind of safety-type lightning-protection module - Google Patents
A kind of safety-type lightning-protection module Download PDFInfo
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- CN107294078A CN107294078A CN201710434169.1A CN201710434169A CN107294078A CN 107294078 A CN107294078 A CN 107294078A CN 201710434169 A CN201710434169 A CN 201710434169A CN 107294078 A CN107294078 A CN 107294078A
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- Prior art keywords
- lightning
- inner cover
- discharge tube
- protection module
- safety
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/008—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for protective arrangements according to this subclass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of safety-type lightning-protection module, is related to a kind of safety-type lightning-protection module for applying to railway signal system lightning protection.To overcome more than the defect that there is short circuit after lightning-protection module failure in the prior art, including shell, bottom plate, and one group lightning protection circuit；Lightning protection circuit described in every group is separately mounted on an inner cover；Welded respectively with an electrode of described piezo-resistance and discharge tube with low temperature soldering tin material at the two ends of dropout connector；Spring is additionally provided between inner cover and discharge tube.When lightning-protection module breaks down; its failure mode is high-impedance state; prevent lightning protection circuit from occurring short trouble while doing sufficient lightning protection to protected circuit and its equipment; it is safe; railway signal lightning protection field is particularly well suited for use in, its own does not influence the normal work of signal line and its equipment after breaking down.
Description
Technical field
The present invention relates to a kind of lightning-protection module, more particularly to a kind of safety-type lightning protection for applying to railway signal system lightning protection
Module.
Background technology
At present, requirement more and more higher of the electronic equipment to thunder and lightning or surge protection.Generally electronics is set using lightning-protection module
Standby and its signal system is protected, and achieves certain lightning protection effect.In lightning-protection module generally using discharge tube and
It is pressure-sensitive after deterioration or piezo-resistance is generally gradually degraded over time as the core parts of lightning-protection module, but piezo-resistance
Resistance is usually short-circuit mode；Discharge tube is damaged because of various factors, is also possible to cause short circuit after damage.It is anti-in lightning-protection module
Thunder shorted devices, will can be connected, causing can not be normal by protection equipment failure, in serious conditions by protection equipment with the earth
Under, because lightning protection component short circuit also results in fire safety accident.
In railway signal system lightning protection field, because railway signals equipment is safety means, it is desirable to which event occurs in equipment
After barrier, it is necessary to swing to secure side, prevent signalling arrangement failure cause from causing security incident, simultaneously as railway is with punctual, accurate
Point requirement becomes increasingly conspicuous, to the reliability more and more higher of signalling arrangement.Therefore, the lightning protection mould protected for railway signal system
Block, secure side can be swung to after a failure by also requiring that, i.e., open circuit mode is presented after lightning-protection module failure, it is to avoid by signal and greatly
Ground, which is connected, causes progression of failure, prevents the normal work of lightning-protection module fault impact signalling arrangement and influences train operation.Existing skill
The lightning-protection module of art, although some failures taken subsequently ensure mode, but still there is lightning-protection module failure to cause row often
The situation of car operation occurs, and currently lacks a kind of safety-type lightning-protection module, train operation is not influenceed after breaking down.
The content of the invention
To overcome the defect that there is short circuit after lightning-protection module failure in the prior art, the present invention provides one kind and broken down
Afterwards, failure mode is only the safety-type lightning-protection module of high-impedance state, applies to the protection of railway signal system, prevents railway from believing
Number device line and ground short circuit, influence train operation.
The technical solution adopted for solving the technical problem of the present invention is：One kind has safety-type lightning-protection module, including shell
（1）, with shell（1）Coordinate the bottom plate covered（2）, and more than one group be located at shell（1）It is interior by piezo-resistance（6）, discharge tube
（5）, dropout connector（7）Lightning protection circuit in series；It is characterized in that：Lightning protection circuit described in every group is separately mounted to one
Individual inner cover（3）On；Piezo-resistance is fixedly mounted on inner cover（3）On, discharge tube（5）With inner cover（3）Between be slidably connected；Described
Dropout connector（7）Two ends respectively with described piezo-resistance（6）And discharge tube（5）An electrode low temperature soldering tin material
Welding；Inner cover（3）With discharge tube（5）Between be additionally provided with to discharge tube（5）Push or pull, make along stopper slot glide direction
Discharge tube maintains the disengaging dropout connector（7）Potential energy spring（4）.
The inner cover（3）On be provided with spring mounting hole（301）, spring（4）One end is placed in spring mounting hole（301）It is interior,
Discharge tube of the other end in the way of applying elastic force described in apical grafting（5）Outer wall；Boss is provided with described electric discharge pipe outer wall, it is interior
Cover（3）Provided with the chute being slidably matched with described boss（302）.
Described dropout connector（7）Upper setting current limiting conductive segment.
The discharge tube includes electrode, porcelain tube and electronic emission material, and described electrode and porcelain tube formation confined space are close
Close filled with gas in space, electrode is provided with the boss being placed in confined space, and electronic emission material is fixed on the electrode
On boss, the porcelain tube inwall is provided with conductive strips, confined space and set between the boss side of electrode and porcelain tube inwall
There is anti-short circuit isolation band.
Described shell（1）Three groups of lightning protection circuits are inside provided with, wherein the inner cover of two groups of lightning protection circuits（3）It is edge-on side by side to set
Put, bottom is installed on bottom plate（2）On；The inner cover of another group of lightning protection circuit（3）It is coupled across two groups of edge-on lightning protection circuits
Inner cover（3）Top.
Also include the alarm displaying block in shell（9）；Described alarm displaying block（9）With at least one set of lightning protection circuit
In inner cover（3）It is slidably connected, the discharge tube of each lightning protection circuit（5）Outer wall is respectively with alerting displaying block（9）Drive connection.
Described shell（1）On be provided with window（101）；Described alarm displaying block（9）Two kinds are scribbled in normality or event
Barrier state respectively with window（101）Corresponding color.
Remote signalling bar (8) is additionally provided with shell；Described remote signalling bar（8）It is provided with bulge loop（801）；Described inner cover（3）
On be provided with two projections（303）, it is respectively arranged with for remote signalling bar in projection（8）The through hole of insertion；Described bottom plate 2 is provided with
Through hole（201）；Described remote signalling bar（8）The projection penetrated on the inner cover（303）Through hole, top and described alarm are shown
Block（9）Apical grafting, bottom passes through bottom plate（2）On through hole（201）And stretch out outside bottom plate 2, and the bulge loop on remote signalling bar（801）With
Bottom plate（2）Abut.
In inner cover（3）Piezo-resistance is installed in outside, in inner cover（3）Inner side is installed by spring, discharge tube, dropout connector；Institute
State bottom plate（2）It is provided with three to six pins being connected respectively with three groups of lightning protection circuits.
The positive effect of the present invention is that, when lightning-protection module breaks down, its failure mode is high-impedance state, to by protective wire
Road and its equipment prevent lightning protection circuit from occurring short trouble while doing sufficient lightning protection, safe, are particularly suitable for making
Used in railway signal lightning protection field, its own does not influence the normal work of signal line and its equipment after breaking down.Together
When, three road lightning protection circuits can be set in a lightning-protection module, in the case where that outside need not train, may be selected to realize one
, longitudinal direction, vertically and horizontally protected mode horizontal to circuit, lightning-protection module overall volume are small, it is possible to achieve intensive lightning protection.
The present invention is further illustrated with reference to embodiment and accompanying drawing.
Brief description of the drawings
Fig. 1 is safety-type lightning-protection module principle schematic of the invention.
Fig. 2 is safety-type lightning-protection module dimensional structure diagram of the invention.
Fig. 3 is safety-type lightning-protection module decomposition texture schematic diagram one of the invention.
Fig. 4 is safety-type lightning-protection module internal breakup structural representation one of the invention.
Fig. 5 is safety-type lightning-protection module internal breakup structural representation two of the invention.
Fig. 6 is one of them interior cap assembly cooperation schematic diagram of safety-type lightning-protection module of the invention.
Fig. 7 coordinates side schematic view for one of them interior cap assembly of safety-type lightning-protection module of the invention.
Fig. 8 is conventional discharge tubular construction diagrammatic cross-section.
Fig. 9 is discharge tube structure diagrammatic cross-section of the invention.
Figure 10 is another discharge tube structure diagrammatic cross-section of the invention.
Figure 11 is another discharge tube structure diagrammatic cross-section of the invention.
In figure：1 shell, 2 bottom plates, 3 inner covers, 4 springs, 5 discharge tubes, 6 piezo-resistances, 7, which thread off, connects, 8 remote signalling bars, and 9 accuse
Alert displaying block.
Embodiment
The safety-type lightning-protection module of the present invention is described in further details below in conjunction with the drawings and specific embodiments.Should
It is to be noted that：The combination of technical characteristic or technical characteristic described in the present embodiment be not construed as it is isolated, they
It can be mutually combined to reach superior technique effect, all be appreciated that it is the scope of the present invention.
As shown in Figures 1 to 7, safety-type lightning-protection module of the invention includes shell 1, coordinates the bottom plate 2 covered with shell 1,
And more than one group of lightning protection circuit.
Every group of lightning protection circuit is in series by piezo-resistance 6, discharge tube 5, dropout connector 7, and every group of lightning protection circuit is also
Include an inner cover 3, piezo-resistance is fixedly mounted on inner cover 3, is slidably connected between discharge tube 5 and inner cover 3；Wherein pressure-sensitive electricity
Resistance 6 includes two electrodes 601,602, and discharge tube 5 includes two electrodes 501,502, and described discharge tube 5, piezo-resistance 6 are consolidated
Dingan County is on inner cover 3.One of electrode of described piezo-resistance 6 such as 601 electrical connection pins such as A1, another electrode
602 are welded together with one end of described dropout connector 7 using low temperature soldering tin material；Wherein the one of described discharge tube 5
The other end of individual electrode such as 501 and described dropout connector 7 is welded together using low temperature soldering tin material, another electrode
502 electrical connection pins B1.It is additionally provided between inner cover 3 and discharge tube 5 to discharge tube 5 and applies thrust or drawing along stopper slot glide direction
Power, discharge tube is set to maintain the spring 4 of the potential energy for departing from the dropout connector 7.Preferred scheme：It is provided with the inner cover 3
Spring mounting hole 301, one end of spring 4 is placed in spring mounting hole 301, the other end putting described in apical grafting in the way of applying elastic force
The outer wall of fulgurite 5；Boss is provided with described electric discharge pipe outer wall, inner cover 3 is provided with the chute being slidably matched with described boss
302.As shown in accompanying drawing 3,4, spring 4 loads after mounting hole 301, and one end props up the bottom of mounting hole 301, and the other end abuts discharge tube
Surface, described spring 4 makes discharge tube have mobile potential energy, when piezo-resistance or discharge tube temperature are increased to low-temperature welding material
After the fusing point of material, or dropout connector met with lightning current from conductive restricted section disconnect when, the potential energy ensure discharge tube movement one
Fixed distance, disconnects the lightning protection circuit in lightning-protection module.Boss on discharge tube, which coordinates, to be inserted in described chute 302, when putting
When fulgurite is moved, the moving direction of confined discharge pipe makes discharge tube to be moved linearly towards chute direction.It is of course also possible to will
The another side for being fixedly mounted on discharge tube of spring 4, pulling force is applied to discharge tube, discharge tube is had mobile potential energy.In addition,
Spring 4 can also be substituted using other flexible members.
Because dropout connector 7 is welded using low temperature soldering tin material with piezo-resistance, when piezo-resistance deterioration, lightning protection circuit
In there is overcurrent to cause piezo-resistance to be generated heat, the temperature of piezo-resistance is stepped up, when temperature is increased to low temperature solder materials
During fusing point, because discharge tube and dropout connector weld together and maintain the effect for the potential energy for departing from dropout connector 7, put
Fulgurite together departs from piezo-resistance 6 with dropout connector 7, is disconnected with electrode 602, blocks the overcurrent on lightning protection circuit, resistance
Only further the rise even failure of short circuit or burning occur lightning-protection module temperature.Equally, dropout connector 7 uses low temperature scolding tin
Material is welded with discharge tube, and when the breakdown conducting of discharge tube is in glow discharge conducting state, the voltage at its two ends is very low, stream
The electric current crossed is than larger, and the volume of discharge tube is much smaller than piezo-resistance, and the temperature of discharge tube is raised rapidly, when temperature is increased to
During the fusing point of low temperature soldering tin material, because discharge tube maintains the effect of the potential energy of disengaging dropout connector 7, discharge tube and the company of dropout
Fitting 7 departs from, and is disconnected with electrode 501 and blocks overcurrent, prevents the further rise of lightning-protection module temperature even burning short circuit event
Barrier occurs.The two ends of dropout connector 7 are all respectively welded using low temperature solder materials with piezo-resistance and discharge tube, are being put with spring
Apply thrust on fulgurite, make to be always maintained at the potential energy for departing from dropout connector 7 on discharge tube, either discharge tube or pressure-sensitive
Resistance breaks down, and causes piezo-resistance or discharge tube to overheat, can timely disconnect lightning protection circuit, prevent line short fault
Generation, lightning-protection module has the ability of dual short-circuit protection, substantially increases the security of lightning-protection module.
Further, current limiting conductive segment is set on described dropout connector 7, when lightning current exceedes current limliting conductive segment
During ability, dropout connector 7 is struck off at current limliting conductive segment, prevents lightning current from passing through, and prevents other parts of lightning-protection module
Ignition even short circuit is damaged by powerful lightning current, prevents protected circuit from forming short circuit.Described dropout connector one
As be made of copper metal material, according to ability of the copper material unit cross-sectional area by lightning current, and lightning-protection module design is most
Big through-current capability, calculates the size of conductive segment area of section, a portion of dropout connector is by the section face calculated
Product is fabricated to current limliting conductive segment.Current limliting conductive segment is set on dropout connector, and lightning-protection module had lightning current self-protection
Ability, further increases the security performance of lightning-protection module.
Described discharge tube 5 is safety-type discharge tube, and its failure mode only has discharge tube two after a kind of high-impedance state, failure
Individual interelectrode resistance is more than 1000M ohm.Described safety-type discharge tube, including electrode, porcelain tube and electronic emission material；Electricity
Filled with gas in pole and porcelain tube formation confined space, confined space, electrode is provided with boss, and electronic emission material is fixed on described
On the boss of electrode；The porcelain tube inwall is provided with conductive strips；Be located in confined space electrode boss side and porcelain tube inwall it
Between maintain discontiguous distance provided with anti-short circuit isolation band, i.e. electrode and porcelain tube inwall.Sent out using this safety-type discharge tube
During raw failure, lightning protection circuit is high-impedance state, and short circuit does not occur and its causes consequent malfunction upgrading phenomenon, further increases anti-
The security of thunder module.
Provided with three groups of lightning protection circuits in the safety-type lightning-protection module of the present invention, shell 1, wherein the inner cover 3 of two groups of lightning protection circuits
Edge-on side by side to set, bottom is installed on bottom plate 2；The inner cover 3 of another group of lightning protection circuit is coupled across edge-on two groups and fixed
At the top of inner cover 3 of lightning protection circuit.Three groups of lightning protection circuits are in door word structure setting；It is corresponding to be provided laterally for protected circuit
Or longitudinal direction or vertically and horizontally protected mode.Wherein first group lightning protection circuit divides two pins A1, B1 and protected a pair of circuits
Do not electrically connect, it is possible to achieve the cross-protection of this pair of circuit.First and second group of lightning protection circuit is electrically connected with protected a pair of circuits
Connect, it is possible to achieve the vertical protection of this pair of circuit.Three groups of lightning protection circuits are electrically connected with protected a pair of circuits, it is possible to achieve should
Vertically and horizontally protection to signal line.
The safety-type lightning-protection module of the present invention, in addition to alarm displaying block 9 is equipped with shell, alert displaying block 9
It is slidably connected with the inner cover 3 in two groups of edge-on lightning protection circuits, the outer wall of discharge tube 5 of each lightning protection circuit is respectively with alerting displaying block
9 drive connections.After the disconnection of any group of lightning protection circuit, when driving discharge tube 5 chute 302 of spring 4 is moved, discharge tube 5 is just
Alarm displaying block 9 can be promoted to be slided relative to inner cover 3, in specific implementation process, shifting that can be by alerting displaying block 9 controls to open
Triggering is closed, alarm signal is provided for outward appearance equipment.In addition, alarm displaying block 9 can also have two kinds of colors above, such as red 902
With green 901；Window 101 is provided with described shell 1, when lightning-protection module normal operating conditions, the correspondence of window 101 is shown
Green, represents that lightning-protection module is normal；When lightning-protection module failure, alarm displaying block 9 is driven by spring 4, and window 101 is externally shown
Red, represents that lightning-protection module is abnormal.
Described alarm displaying block 9 is with above the inner cover of one group of lightning protection circuit at top, alerting the left and right of displaying block 9
Inner cover of the two ends respectively with two groups of edge-on lightning protection circuits is slidably matched, when dropout connector 7 is at the electrode 602 of piezo-resistance
Or from when disengaging at electric discharge pipe electrode 501 and the potential energy movement because of presence, discharge tube drives the synchronous shifting of described alarm displaying block 9
It is dynamic, the RED sector for alerting displaying block 9 is shown, lightning-protection module failure exception is represented.It is disconnected when any group of lightning protection circuit
After opening, the discharge tube 5 of this group of lightning protection circuit can all drive the alert synchronizing moving of displaying block 9, and the RED sector for alerting displaying block is shown
Show to come, represent that lightning-protection module is abnormal.When lightning-protection module window shows red, people are pointed out to change as early as possible.
Remote signalling bar (8) is additionally provided with described safety-type lightning-protection module shell；Described remote signalling bar 8 is provided with bulge loop
801；The through hole being respectively arranged with two projections 303, projection for the insertion of remote signalling bar 8 is provided with described inner cover 3；Described
Bottom plate 2 is provided with through hole 201；The through hole for the projection 303 that described remote signalling bar 8 is penetrated on the inner cover, top and described announcement
The alert apical grafting of displaying block 9, bottom is through the through hole 201 on bottom plate 2 and stretches out outside bottom plate 2, and the bulge loop 801 on remote signalling bar and bottom
Plate 2 is abutted.Remote signalling bar 8 is used for the switch for triggering the remote alarm circuit of outside.Under normal circumstances, displaying block 9, inner cover 3 are alerted
On two projections 303, bottom plate 2 and its through hole 201 constrain the position of remote signalling bar 8, fix remote signalling bar 8 not removable jointly
Dynamic, when lightning-protection module failure exception, after discharge tube driving alarm displaying block 9 is moved, remote signalling bar then departs from the alarm display
The compacting constraint of block 9, produces position movement, so as to trigger the switch of remote alarm.
Piezo-resistance is installed in the outside of inner cover 3, spring, discharge tube, dropout connector are installed in the inner side of inner cover 3；The bottom
Plate 2 is provided with three to six pins being connected respectively with three groups of lightning protection circuits.According to the protected mode of protected circuit, respectively with
The pin electrical connection of corresponding lightning protection circuit.Piezo-resistance is installed in the outside of inner cover 3, and spring, discharge tube are installed in the inner side of inner cover 3, is taken off
Snap connector, can make the combination of lightning-protection module internal components compact, reduces lightning-protection module effectively using the space in lightning-protection module
Volume.I.e. by this structure arrangement, 3 road lightning protection circuits can be set in a lightning-protection module, may be selected to realize a pair of lines
Road is horizontal, longitudinal direction, vertically and horizontally protected mode, wherein with six piezo-resistances, six discharge tubes and six Thermal protection trip points,
Three are crossed lightning current dropout protection point, and lightning-protection module overall volume is small, it is possible to achieve intensive lightning protection.This small volume and
The lightning-protection module that a pair of circuits of energy are vertically and horizontally protected, lightning protection is carried out needing communication, railway signal to need to concentrate
More circuits under identical space environment, can be protected, with very big advantage by occasion；And normal conditions
Under, vertically and horizontally protected using the lightning-protection module of prior art, it is necessary to could be realized by outside wiring with three lightning-protection modules, body
Product is than larger, in the case where needing the more occasions of protection circuit, can be limited in space, and lightning-protection module is installed without position.
3-6 inserted sheet pin, the line requirements of pin A1, A2, A3, B1, B2, B3 foundation quilt of the lightning protection circuit are provided with bottom plate 2
Protected mode draw and be connected on corresponding inserted sheet pin, realize the electrical connection with protected circuit.
The safety-type lightning-protection module of the present invention, while using multistage anti-short circuit protection measures, hardly occur short circuit phenomenon,
Security is very high, even if lightning-protection module, which breaks down, nor affects on the normal work of protected circuit and its equipment, especially fits
Close railway signal system and its lightning protection of equipment.
Shown in reference picture 8 to 11, discharge tube of the invention includes electrode, porcelain tube and electronic emission material, described electricity
Filled with gas in pole and porcelain tube formation confined space, confined space, electrode is provided with the boss being placed in confined space, electronics hair
Penetrate material to be fixed on the boss of the electrode, the porcelain tube inwall is provided with conductive strips, confined space positioned at the convex of electrode
Anti- short circuit isolation band is provided between platform side and porcelain tube inwall.
Common discharge tube includes two or three electrodes, porcelain tube, electronic emission material, and conductive strips；Two of which
Electrode forms a confined space with porcelain tube with the mode of welding, filled with gas in the confined space；It is typically provided on electrode
Boss, at intervals, electronic emission material is coated on boss the boss of two electrodes with the mode of sintering, in described porcelain
Pipe is generally metallized ceramic insulator and makes cylindric, is additionally provided with its inwall along the axially extending strips of conductive of inwall
Band, the ionization of electric field acceleration region of discharge is acted on by it, discharge tube is had quick response characteristic, conductive strips are generally used
Pencil with 2B hardness line is formed, i.e., so-called carbon line.
The electrode of discharge tube is made by metal material, when discharge tube conducting be in arc discharge state when temperature very
Height, the metal at electrode boss position easily melts and sputtered on porcelain tube inwall, can be by two with the accumulation of inwall metal dust
Individual electrode connection, the failure of guiding discharge tube short circuit.
The discharge tube of the present invention sets anti-short circuit isolation band between porcelain tube inwall and electrode, when discharge tube conducting is in arc light
During discharge condition high temperature, the electrode metal of thawing is sputtered on porcelain tube inwall, due to the effect of isolation strip, the metal powder on inwall
End is not readily accessible to the electrode at two ends, and two electrodes of discharge tube can not pass through the short circuit of porcelain tube inwall, it is ensured that after electric discharge tube failure
For open-circuit condition, the insulaion resistance at test two ends is more than 1000M ohm.
Discharge tube one embodiment of the present invention is as shown in figure 9, including two electrode 1A, porcelain tube 2A, electronic emission material
3A, conductive strips 4A；A step 21A is in porcelain tube inwall side, after two electrodes and porcelain tube welded seal, step 21A and electricity
There is the two discontiguous spacing of holding between the 1A of pole；A groove 22A can also be set to increase inwall step on the step of porcelain tube
With electrode 1A distance, make to form anti-short circuit isolation band 5A between porcelain tube 2A and electrode 1A by this structure setting, when two
Metal on individual electrode is splashed to porcelain tube inwall by high temperature melt, even if metal dust has been expired in sputtering on inwall, due to isolation
The presence of band, will not be short-circuit by inwall.
For another embodiment of safety-type discharge tube of the invention, inner tube 7A, inner tube are set in the porcelain tube 2A of discharge tube
7A length is shorter than porcelain tube 2A, and it is combined fixation, inner tube 7A two ends and two lateral electrode 1A with porcelain tube 2A by fixing device 8A
Between have the two discontiguous spacing of holding, conductive strips 4A is arranged on inner tube 7A inwall, this structure make inner tube 8A, porcelain tube 2A with
Anti- short circuit isolation band 5A is formd between electrode 1A, after the metal on two electrodes is splashed to inner tube 7A by high temperature melt,
, will not be short-circuit by inner tube even if metal dust has been expired in sputtering on inner tube 7A inwall, due to the presence of isolation strip.
As shown in figure 11, another embodiment of safety-type discharge tube of the invention, is set in electrode 1A boss 11A surroundings
Resistant to elevated temperatures metal material set or insulation sleeve 6A, the boss position of electrode is encased, resistant to elevated temperatures metal material set or insulation sleeve
6A does tapered, slightly higher than the boss of electrode 1.When the metal on two electrodes is outwards sputtered by high temperature melt, due to resistance to
The metal material set or insulation sleeve 6A pyramidal structure and slightly above electrode boss of high temperature, make the metal sputtering angle of thawing by
Constraint, it is impossible to be ejected on the inwall of porcelain tube, can only be ejected on the electrode on opposite, i.e., in resistant to elevated temperatures metal material set or absolutely
Edge, which covers, forms an anti-short circuit isolation band 5A between 6A and porcelain tube inwall, due to the effect of isolation strip, two electrodes will not pass through porcelain
Inside pipe wall and it is short-circuit.Described resistant to elevated temperatures metal material set is made by tungsten copper.
One more embodiment of the present invention is to be set in described electrode 1A boss surface and reticulate concaveconvex structure, described
Electronic emission material be placed in the groove of netted concaveconvex structure, electronic emission material is placed in groove, it is not easy to come off,
The electronic material or metal dust so outwards sputtered is reduced, so as to reduce the short-circuit possibility at discharge tube the two poles of the earth.
Further, can be by the contraction in length of the strips of conductive band in porcelain tube, the distance of conductive strips and electrode is at least big
In 1mm, most preferably more than 1.5mm, conductive strips are more remote apart from electrode, and the possibility that two electrodes are turned on by porcelain tube inwall is just smaller.
The safety-type discharge tube of the present invention, applies power current until electric discharge tube failure, tests the insulation at two ends at two ends
Resistance is more than 1000OM ohm.Apply 8/20 dash current at two ends to be impacted, until electric discharge tube failure, tests the exhausted of two ends
Edge resistance is more than 1000OM ohm.Apply the test of high-frequency impulse high-speed switch at discharge tube two ends, until electric discharge tube failure, test
The insulaion resistance at two ends is more than 1000OM ohm.The discharge tube of failure is dissected, on porcelain tube inwall or has the metal of sputtering
Powder, but two electrode conductions will not be caused all the time.By above-mentioned it is demonstrated experimentally that setting anti-short circuit isolation inside discharge tube
Band, can make the failure mode of discharge tube there was only open circuit mode, without short-circuit mode.
The scope of the preferred embodiment for the present invention includes other realization, wherein can not in the order presented, including root
According to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be by embodiments of the invention
Art technician understanding.Description in embodiment is only exemplary, not as limitation, ability
The technical staff in domain, by understanding the technical scheme that embodiment technology contents are resulted in, is to belong to scope of the invention.
Claims (9)
1. one kind has safety-type lightning-protection module, including shell（1）, with shell（1）Coordinate the bottom plate covered（2）, and one group with
It is upper to be located at shell（1）It is interior by piezo-resistance（6）, discharge tube（5）, dropout connector（7）Lightning protection circuit in series；Its feature
It is：Lightning protection circuit described in every group is separately mounted to an inner cover（3）On；Piezo-resistance is fixedly mounted on inner cover（3）On, put
Fulgurite（5）With inner cover（3）Between be slidably connected；Described dropout connector（7）Two ends respectively with described piezo-resistance（6）
And discharge tube（5）An electrode with low temperature soldering tin material weld；Inner cover（3）With discharge tube（5）Between be additionally provided with to discharge tube
（5）Pushed or pulled along stopper slot glide direction, discharge tube is maintained the disengaging dropout connector（7）Potential energy
Spring（4）.
2. safety-type lightning-protection module according to claim 1, it is characterised in that：The inner cover（3）On be provided with spring peace
Fill hole（301）, spring（4）One end is placed in spring mounting hole（301）It is interior, the other end putting described in apical grafting in the way of applying elastic force
Fulgurite（5）Outer wall；Boss, inner cover are provided with described electric discharge pipe outer wall（3）Provided with what is be slidably matched with described boss
Chute（302）.
3. safety-type lightning-protection module according to claim 1, it is characterised in that：Described dropout connector（7）It is upper to set
Current limiting conductive segment.
4. safety-type lightning-protection module according to claim 1, it is characterised in that：The discharge tube include electrode, porcelain tube and
Filled with gas in electronic emission material, described electrode and porcelain tube formation confined space, confined space, electrode is close provided with being placed in
The boss closed in space, electronic emission material is fixed on the boss of the electrode, and the porcelain tube inwall is provided with conductive strips, close
Close and be provided with anti-short circuit isolation band in space between the boss side of electrode and porcelain tube inwall.
5. according to any described safety-type lightning-protection module of Claims 1-4, it is characterised in that：Described shell（1）Inside it is provided with
Three groups of lightning protection circuits, wherein the inner cover of two groups of lightning protection circuits（3）Edge-on side by side to set, bottom is installed on bottom plate（2）On；Another group
The inner cover of lightning protection circuit（3）It is coupled across the inner cover of two groups of edge-on lightning protection circuits（3）Top.
6. safety-type lightning-protection module according to claim 5, it is characterised in that：The alarm also included in shell is shown
Block（9）；Described alarm displaying block（9）With the inner cover at least one set of lightning protection circuit（3）It is slidably connected, each lightning protection circuit is put
Fulgurite（5）Outer wall is respectively with alerting displaying block（9）Drive connection.
7. safety-type lightning-protection module according to claim 6, it is characterised in that：Described shell（1）On be provided with window
（101）；Described alarm displaying block（9）Scribble two kinds normality or malfunction respectively with window（101）Corresponding color.
8. safety-type lightning-protection module according to claim 7, it is characterised in that：Remote signalling bar (8) is additionally provided with shell；Institute
The remote signalling bar stated（8）It is provided with bulge loop（801）；Described inner cover（3）On be provided with two projections（303）, set respectively in projection
It is equipped with for remote signalling bar（8）The through hole of insertion；Described bottom plate 2 is provided with through hole（201）；Described remote signalling bar（8）Penetrate described
Projection on inner cover（303）Through hole, top and described alarm displaying block（9）Apical grafting, bottom passes through bottom plate（2）On through hole
（201）And stretch out outside bottom plate 2, and the bulge loop on remote signalling bar（801）With bottom plate（2）Abut.
9. safety-type lightning-protection module according to claim 5, it is characterised in that：In inner cover（3）Piezo-resistance is installed in outside,
In inner cover（3）Inner side is installed by spring, discharge tube, dropout connector；The bottom plate（2）Three to six are provided with respectively with three groups to prevent
The pin of thunder and lightning road connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434169.1A CN107294078B (en) | 2017-06-09 | 2017-06-09 | Safe type lightning protection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434169.1A CN107294078B (en) | 2017-06-09 | 2017-06-09 | Safe type lightning protection module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107294078A true CN107294078A (en) | 2017-10-24 |
| CN107294078B CN107294078B (en) | 2020-03-31 |
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ID=60096851
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710434169.1A Active CN107294078B (en) | 2017-06-09 | 2017-06-09 | Safe type lightning protection module |
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| Country | Link |
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| CN (1) | CN107294078B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023202489A1 (en) * | 2022-04-20 | 2023-10-26 | 厦门赛尔特电子有限公司 | Thermally protected varistor |
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|---|---|---|---|---|
| CN101309008A (en) * | 2007-09-25 | 2008-11-19 | 深圳市科安达电子技术有限公司 | Multifunctional lightning protection module |
| CN204144938U (en) * | 2014-08-27 | 2015-02-04 | 深圳市海鹏信电子股份有限公司 | A kind of pcb board carries Surge Protector |
| CN204303722U (en) * | 2014-12-11 | 2015-04-29 | 上海电科电器科技有限公司 | Surge protector and thermal tripping mechanism thereof |
| CN206908287U (en) * | 2017-06-09 | 2018-01-19 | 深圳科安达电子科技股份有限公司 | A kind of safety-type lightning-protection module |
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2017
- 2017-06-09 CN CN201710434169.1A patent/CN107294078B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309008A (en) * | 2007-09-25 | 2008-11-19 | 深圳市科安达电子技术有限公司 | Multifunctional lightning protection module |
| CN204144938U (en) * | 2014-08-27 | 2015-02-04 | 深圳市海鹏信电子股份有限公司 | A kind of pcb board carries Surge Protector |
| CN204303722U (en) * | 2014-12-11 | 2015-04-29 | 上海电科电器科技有限公司 | Surge protector and thermal tripping mechanism thereof |
| CN206908287U (en) * | 2017-06-09 | 2018-01-19 | 深圳科安达电子科技股份有限公司 | A kind of safety-type lightning-protection module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023202489A1 (en) * | 2022-04-20 | 2023-10-26 | 厦门赛尔特电子有限公司 | Thermally protected varistor |
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| CN107294078B (en) | 2020-03-31 |
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