CN207925432U - Gas-discharge tube and overvoltage protection - Google Patents
Gas-discharge tube and overvoltage protection Download PDFInfo
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- CN207925432U CN207925432U CN201820109151.4U CN201820109151U CN207925432U CN 207925432 U CN207925432 U CN 207925432U CN 201820109151 U CN201820109151 U CN 201820109151U CN 207925432 U CN207925432 U CN 207925432U
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Abstract
The utility model discloses a kind of gas-discharge tube and overvoltage protection, the gas-discharge tube includes an at least insulator, at least two electrode assemblies and at least a cooling of electrode object, insulator is equipped with through-hole, the opposite surface of at least two electrode assemblies forms discharge face, insulator and at least two electrode assemblies are enclosed an electric discharge inner cavity jointly, through-hole is connected to electric discharge inner cavity, by the way that cooling of electrode object is connect with an electrode assembly, and the shortest distance between the surface and the discharge face of the electrode assembly of cooling of electrode object direction electric discharge inner cavity is H, the value range of H is 0mm≤H≤1.2mm.When inert gas carry out arc discharge when, cooling of electrode object cools down the electrode assembly being attached thereto, and delays discharge face temperature rise, prevent discharge face caused due to overheat electrode assembly burn or short circuit, improve safety.
Description
Technical field
The utility model is related to overvoltage protection technical field, more particularly to a kind of gas-discharge tube and have the gas
The overvoltage protection of body discharge tube.
Background technology
Gas-discharge tube is a kind of switching mode protection device, is used usually as overvoltage protecting device.Generally make at present
Gas-discharge tube is formed by insulation tube body and its both ends sealing electrode, inner cavity filling with inert gas.When gas-discharge tube electricity
When the voltage at pole both ends is more than the breakdown voltage of gas, gap discharge will be caused, the gas-discharge tube is rapidly by high-impedance state
Become low resistance state, conducting is formed, to protect other devices connected in parallel.Two of existing gas-discharge tube are relatively electric
Pole is formed with discharge face, and when discharge face is discharged, inner cavity temperature increases, and when inner cavity, temperature is increased to certain numerical value, discharge face
It is easy to lead to electrode burn or short circuit due to overheat.
Utility model content
The main purpose of the utility model is to provide a kind of gas-discharge tube, it is intended to delay discharge face temperature to increase, improve
Safety.
To achieve the above object, the utility model proposes gas-discharge tube, including：
An at least insulator, the insulator are equipped with through-hole；
At least two electrode assemblies, at least two electrode assembly are oppositely arranged, and at least two electrode assembly
Opposite surface forms discharge face, and the insulator and at least two electrode assemblies are enclosed an electric discharge inner cavity jointly, described
Through-hole is connected to the electric discharge inner cavity；
An at least cooling of electrode object, the cooling of electrode object are connect with an electrode assembly, and the cooling of electrode object direction
The shortest distance between the surface and the discharge face of the electrode assembly of inner cavity of discharging is H, the value range of H be 0mm≤H≤
1.2mm。
Preferably, the cooling of electrode object is set to surface of the electrode assembly away from the electric discharge inner cavity.
Preferably, the cooling of electrode object is set to surface of the electrode assembly towards the electric discharge inner cavity.
Preferably, an at least electrode assembly is equipped with an at least via, and the cooling of electrode object is contained in the via,
With the closed electric discharge inner cavity.
Preferably, an at least electrode assembly includes first electrode and an at least second electrode, and the first electrode offers
It is connected to an at least mounting hole for the electric discharge inner cavity, the second electrode blocks the mounting hole, the cooling of electrode object sandwiched
Between the first electrode and second electrode, to seal the electric discharge inner cavity.
Preferably, the second electrode includes main body and the protrusion set on the main body, the main body and first electrode
Outer surface connects, and the protrusion is contained in the mounting hole, and the cooling of electrode object is located in the protrusion and the mounting hole
Hole wall between.
Preferably, the cooling of electrode object include circular connector and along the connector one end periphery to rolled over
First fitting of curved extension, the connector are located between the protrusion and the hole wall of the mounting hole, and described first supports
Two surfaces of fitting are abutted with the outer surface of the main body and first electrode respectively.
Preferably, the cooling of electrode object further includes prolonging along the outside bending of periphery of the free end of first fitting
The second fitting stretched, second fitting are abutted with the periphery of the main body.
Preferably, most short between the raised surface and the discharge face adjacent with the protrusion towards the electric discharge inner cavity
Distance is h, and the value range of h is 0mm≤h≤0.6mm.
Preferably, the value range of h is 0.25mm≤h≤0.45mm.
Preferably, the protrusion is equipped with the first cathode coverage face towards the surface for the electrode assembly being arranged in contrast, should
Electrode assembly is equipped with the second cathode coverage face, first cathode coverage face and the second cathode coverage towards the surface of first electrode
Face is oppositely arranged.
Preferably, the surface of the relatively described first electrode of the electrode assembly is equipped with groove, second cathode coverage face
Set on the bottom wall of the groove, the depth of the groove is A, and the value range of A is 0mm≤A≤0.6mm.
Preferably, the value range of H is 0mm≤H≤0.6mm.
Preferably, the cooling of electrode object is solder either low-temperature adhesive or silica gel.
Preferably, the gas-discharge tube further includes an at least low temperature seal object, and the low temperature seal object is for sealing institute
State electric discharge inner cavity.
Preferably, the low temperature seal object is located between at least one electrode assembly and the insulator.
Preferably, an at least electrode assembly includes first electrode part and an at least second electrode part, the first electrode part
At least sealing hole for being connected to the electric discharge inner cavity is offered, the second electrode part blocks the sealing hole, and the low temperature is close
Envelope object is located between the first electrode part and second electrode part.
Preferably, the insulator is equipped with an at least gap, and the low temperature seal object seals the gap.
Preferably, an at least electrode assembly is equipped with intercommunicating pore, and the low temperature seal object seals the intercommunicating pore.
Preferably, the low temperature seal object is solder or low-temperature adhesive.
The utility model also provides a kind of overvoltage protection, and the overvoltage protection includes above-described gas
Body discharge tube.
The gas-discharge tube of the utility model includes an at least insulator, at least two electrode assemblies and at least an electrode is cold
But object, insulator are equipped with through-hole, and the opposite surface of at least two electrode assemblies forms discharge face, insulator and at least two electrodes
Component is enclosed an electric discharge inner cavity jointly, and through-hole is connected to electric discharge inner cavity, by connecting cooling of electrode object and an electrode assembly
It connects, and cooling of electrode object is H towards the shortest distance between the surface and the discharge face of the electrode assembly of electric discharge inner cavity, H's takes
It is worth ranging from 0mm≤H≤1.2mm.When inert gas carries out arc discharge, cooling of electrode object is to the electrode assembly that is attached thereto
Cooled down, delay discharge face temperature rise, prevent discharge face caused due to overheat electrode assembly burn or short circuit, improve
Safety.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the arc discharge theory structure schematic diagram of the utility model gas-discharge tube；
Fig. 2 is the cut-away view of one embodiment of the utility model gas-discharge tube；
Fig. 3 is the cut-away view of another embodiment of the utility model gas-discharge tube；
Fig. 4 is the cut-away view of the another embodiment of the utility model gas-discharge tube；
Fig. 5 is the structural schematic diagram of the utility model gas-discharge tube another embodiment；
Fig. 6 is the cut-away view of gas-discharge tube in Fig. 5；
Fig. 7 is the structural schematic diagram of the utility model gas-discharge tube another embodiment；
Fig. 8 is the cut-away view of gas-discharge tube in Fig. 7；
Fig. 9 is the enlarged structure schematic diagram at A in Fig. 8；
Figure 10 is the structural schematic diagram of the utility model gas-discharge tube another embodiment；
Figure 11 is the cut-away view of gas-discharge tube in Figure 10；
Figure 12 is the structural schematic diagram of the utility model gas-discharge tube another embodiment；
Figure 13 is the cut-away view of gas-discharge tube in Figure 12；
Figure 14 is the structural schematic diagram of the utility model gas-discharge tube another embodiment；
Figure 15 is the cut-away view of gas-discharge tube in Figure 14.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 100 | Gas-discharge tube | 343 | First cathode coverage face |
| 10 | Insulator | 35 | Second cathode coverage face |
| 11 | Through-hole | 36 | Groove |
| 13 | Gap | 37 | First electrode part |
| 30 | Electrode assembly | 371 | Sealing hole |
| 31 | Discharge face | 38 | Second electrode part |
| 32 | Via | 50 | Electric discharge inner cavity |
| 33 | First electrode | 70 | Cooling of electrode object |
| 331 | Mounting hole | 71 | Connector |
| 34 | Second electrode | 73 | First fitting |
| 341 | Main body | 75 | Second fitting |
| 342 | Protrusion | 90 | Low temperature seal object |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining relative position relation, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and cannot manage
Solution is instruction or implies its relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.It is " more in the description of the present invention,
It is a " it is meant that at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. should do broad sense reason
Solution, for example, " fixation " may be a fixed connection, may be a detachable connection, or integral；It can be mechanical connection, also may be used
To be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary the connection inside two elements
Or the interaction relationship of two elements, unless otherwise restricted clearly.It for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in the present invention is understood as the case may be.
In addition, the technical solution between each embodiment of the utility model can be combined with each other, but must be with ability
Domain those of ordinary skill can be implemented as basis, will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of this technical solution is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of gas-discharge tube 100, which is mainly used for overvoltage protection dress
It sets.
Referring to FIG. 1, for the arc discharge theory structure schematic diagram of the utility model gas-discharge tube 100, gas is put
Inner space when fulgurite 100 enters arc discharge is divided into three regions (areas a, the areas b, the areas c i.e. in figure), in gas-discharge tube
100 surface of emission opposed area is defined as arc discharge area of the areas a, and at this moment for 100 myopia of gas-discharge tube in short circuit, there are certain
Afterflow, electric current increase, and generate a large amount of heat (temperature in this region reaches as high as 1500 DEG C or so), gas expansion, and heat expands
Scattered radiation generates thermal shock to tube wall, to tube wall, this region is defined as nearly arc light radiation area (this regional temperature in the areas b by us
Moment is up to 800 DEG C or so).Heat by electrode conduct heat and gas expansion reach electrode sealing surface periphery, we by this
Region is defined as the remote arc light radiation area in the areas c (this regional temperature is minimum).
It please refers to Fig.2 to Figure 15, the utility model gas-discharge tube 100 includes：
An at least insulator 10, the insulator 10 are equipped with through-hole 11；
At least two electrode assemblies 30, at least two electrode assembly 30 are oppositely arranged, and at least two electrode
The opposite surface of component 30 forms discharge face 31, and the insulator 10 and at least two electrode assemblies 30 are enclosed one and put jointly
Electric inner cavity 50, the through-hole 11 are connected to the electric discharge inner cavity 50；
An at least cooling of electrode object 70, the cooling of electrode object 70 is connect with an electrode assembly 30, and the cooling of electrode
Object 70 towards electric discharge inner cavity 50 surface and the discharge face 31 of the electrode assembly 30 between the shortest distance be H, the value range of H
For 0mm≤H≤1.2mm.
Specifically, insulator 10 can cylinder tube body or cylindrical pellets body, insulator 10 be equipped with through-hole 11, at least two
A electrode assembly 30 is set to the both ends of insulator 10, blocks the through-hole 11 (such as Fig. 2 and Fig. 3, Fig. 7 to Figure 15), or at least two
A electrode assembly 30 is set to the same end of insulator 10, and an electrode assembly 30 blocks the through-hole 11 (such as Fig. 4 and Fig. 5).It is using
When the gas-discharge tube 100, can it be arranged heat-shrinkable T bush (not shown) in the outer surface of insulator 10 as needed, heat-shrinkable T bush rises
To the effect of insulation protection.Insulator 10 and at least two electrode assemblies 30 are enclosed an electric discharge inner cavity 50 jointly, in electric discharge
Chamber 50 is isolated from the outside world, internal to fill inert gas, such as argon gas.
Insulator 10 and at least two electrode assemblies 30 can be high-temperature soldering, and weldering is such as realized by the way of high-temperature soldering
It connects, the fusing point that high-temperature solder refers to is more than 500 DEG C of solder, and high temperature is the temperature more than 500 DEG C；Low temperature alleged by the utility model
It is the lower temperature for the opposite high temperature, is 500 DEG C and 500 DEG C of temperature below, the weldering of high-temperature solder, preferably silver-bearing copper
Material, the fusing point of solder can be according to actually being selected, and this is not restricted.Or insulator 10 and at least two electrode assemblies
30 are attached by low temperature seal object 90, and this is not restricted.
Cooling of electrode object 70 alleged by the utility model is solder (melting) or low-temperature adhesive (deformation or softening)
Or silica gel (deformation or softening).When cooling of electrode object 70 be solder, and part be set to electric discharge inner cavity 50 outside, partly set
When in inner cavity 50 of discharging, cooling of electrode object 70 can absorb heat in the environment higher than the low temperature melts liquefaction or deformation or soft
Change, lead to not seal, when cooling of electrode object 70 melts, the inert gas in inner cavity 50 of discharging is easy to pass through electrode assembly 30
And gas leakage, so that subsequent conditioning circuit is cut off rapidly, gas-discharge tube 100 is prevented to be burned out, cooling of electrode object 70 had both played leakage at this time
The effect of gas, and play the role of cooling electrode assembly 30；When cooling of electrode object 70 all set on electric discharge inner cavity 50 outside or
When internal, cooling of electrode object 70 plays the role of cooling electrode assembly 30.
It should be understood that cooling of electrode object 70 towards surface and the electrode assembly 30 of electric discharge inner cavity 50 discharge face 31 it
Between the shortest distance be H, the value range of H is 0mm≤H≤1.2mm, when cooling of electrode object 70 less than discharge face 31 or with electric discharge
When the shortest distance between face 31 is more than 1.2mm, it cannot achieve the effect that preferably to delay 31 temperature rise of discharge face.H's
It is 0mm≤H≤0.6mm that value range, which specifically has 0mm, 0.6mm, 1.2mm, the preferred H of the present embodiment,.
Herein, it should be noted that be based on above structure, the shape of insulator 10 can also be Polyhedral tube body or ellipse
The structures such as cylindricality, this is not restricted.
Accordingly, it is to be understood that, the technical solution of the utility model, when inert gas carries out arc discharge, electrode is cold
But object 70 cools down the electrode assembly 30 being attached thereto, and delays 31 temperature rise of discharge face, prevents discharge face 31 due to mistake
Heat and cause electrode assembly 30 burn or short circuit, improve safety.
Referring again to Fig. 2, cooling of electrode object 70 is set to surface of the electrode assembly 30 away from the electric discharge inner cavity 50.
It should be understood that cooling of electrode object 70 is set to electrode assembly 30 away from the surface of electric discharge inner cavity 50, that is, it is set to electric discharge
The outside of inner cavity 50, when being subjected to power frequency continued flow, cooling of electrode object 70 absorbs heat so that the temperature of discharge face 31 is quickly cooled down down
Come, extends electrode assembly 30 and melt the time burnt, improve the power frequency tolerance of discharge face 31, avoid in power frequency tolerance time
Gas-discharge tube 100 is burned out in range.Cooling of electrode object 70 plays the role of cooling electrode assembly 30 at this time, delays discharge face
The rising of 31 temperature prevents from burning gas-discharge tube 100.
Referring again to Fig. 3, cooling of electrode object 70 is set to the electrode assembly 30 towards the surface of the electric discharge inner cavity 50.
It should be understood that cooling of electrode object 70 is set to electrode assembly 30 towards the surface of electric discharge inner cavity 50, that is, it is set to electric discharge
The inside of inner cavity 50, when being subjected to power frequency continued flow, cooling of electrode object 70 absorbs heat one side cooling of electrode object 70 so that discharge face 31
Temperature cool down rapidly, extend electrode assembly 30 and melt time for burning, improve the ability of the power frequency tolerance of discharge face 31,
The gas-discharge tube 100 within the scope of power frequency tolerance time is avoided to be destroyed or burn, on the other hand, when electrode assembly 30 is opposite
When discharge face 31 is equipped with cathode emission material, the sputtering and evaporation of cathode emission material can be reduced, improve cathode emission material
The ability of sputter vaporization.
Referring again to Fig. 4, an at least electrode assembly 30 is equipped with an at least via 32, and the cooling of electrode object 70 is contained in
The via 32, with the closed electric discharge inner cavity 50.
It should be understood that cooling of electrode object 70 is set in via 32, when being subjected to power frequency continued flow, cooling of electrode object 70 is inhaled
Heat extends electrode assembly 30 and melts the time burnt, improve electric discharge on the one hand so that the temperature of discharge face 31 cools down rapidly
The ability of the power frequency tolerance in face 31, avoids within the scope of power frequency tolerance time gas-discharge tube 100 from being destroyed and burns；On the other hand
When the opposite discharge face 31 of electrode assembly 30 is equipped with cathode emission material, the sputtering and steaming of cathode emission material can be reduced
Hair improves the ability of cathode emission material sputter vaporization；Another further aspect is when being subjected to power current, when temperature is more than cooling of electrode
When the fusing point or softening point of object 70, the leakproofness of the melting of cooling of electrode object 70 or softening, electric discharge inner cavity 50 is destroyed, external empty
Gas enters electric discharge inner cavity 50 via via 32, is cooled down to discharge face 31, neutralizes discharge ion and electronics, realizes open circuit safety
Failure.
Referring again to Fig. 4 to Figure 15, an at least electrode assembly 30 includes first electrode 33 and an at least second electrode 34,
The first electrode 33 offers at least mounting hole 331 for being connected to the electric discharge inner cavity 50, and the second electrode 34 blocks institute
Mounting hole 331 is stated, the cooling of electrode object 70 is located between the first electrode 33 and second electrode 34, to be put described in sealing
Electric inner cavity 50.
It should be understood that cooling of electrode object 70 is folded between first electrode 33 and second electrode 34, it is continuous being subjected to power frequency
When stream, on the one hand, cooling of electrode object 70 absorbs heat, and the temperature of discharge face 31 is allowed to cool down, and can extend the fusing of electrode assembly 30
The time burnt improves the ability of the power frequency tolerance of discharge face 31, avoids the gas-discharge tube 100 within the scope of power frequency tolerance time
It is destroyed or burns；On the other hand, when the opposite discharge face 31 of electrode assembly 30 is equipped with cathode emission material, the moon can be reduced
The sputtering and evaporation of pole emissive material improve the ability of cathode emission material sputter vaporization；In another aspect, being subjected to power current
When temperature is more than the fusing point or softening point of cooling of electrode object 70, the fusing of cooling of electrode object 70 or softening, electric discharge inner cavity 50
Leakproofness is destroyed, and extraneous air quickly enters electric discharge inner cavity 50 via filling hole, and cooling discharge face 31 neutralizes discharge ion
And electronics, realize open circuit Safe Failure；In another aspect, when high current power current acts on, arc light area temperature rises rapidly, electricity
Pole cooling thing 70, which is absorbed heat, delays the rising of 30 temperature of electrode assembly, before 31 surface temperature of discharge face is not up to fusing point, electrode
Cooling thing 70 is rapidly reached the fusing point or softening point of cooling of electrode object 70, and the leakproofness of electric discharge inner cavity 50 is destroyed, and ambient atmos are fast
Speed enters the arc light area of electric discharge inner cavity 50, and cooling discharge face 31 neutralizes discharge ion and electronics, increases the insulating properties of gas, soon
Fast breaking arc realizes safety open circuit；In another aspect, after heat-shrinkable T bush wraps gas-discharge tube 100, power frequency is not interfered with
Safety open circuit performance when the function of current.
Referring again to Fig. 7 to Fig. 9, second electrode 34 includes main body 341 and the protrusion 342 set on the main body 341, institute
It states main body 341 to connect with the outer surface of first electrode 33, described raised 342 are contained in the mounting hole 331, the cooling of electrode
Object 70 is located between described raised 342 and the hole wall of the mounting hole 331.
It should be understood that since electric discharge inner cavity 50 need to have preferable sealing performance, the periphery and mounting hole of protrusion 342
331 periphery needs to be tightly connected, and setting protrusion 342 is in order to which when 31 temperature of discharge face increases, cooling of electrode object 70 is quickly inhaled
Heat allows the temperature of discharge face 31 to cool down, and can extend electrode assembly 30 and melt the time burnt, improve the work of discharge face 31
The ability of frequency tolerance, avoids the gas-discharge tube 100 within the scope of power frequency tolerance time from being destroyed or burn.
Further, cooling of electrode object 70 include circular connector 71 and along the connector 71 one end periphery to
The first fitting 73 that outer bending extends, the connector 73 be located in described raised 342 and the mounting hole 331 hole wall it
Between, two surfaces of first fitting 73 are abutted with the outer surface of the main body 341 and first electrode 33 respectively.
Based on above structure, it should be noted that in order to enhance the leakproofness between first electrode 33 and second electrode 34
Can, when 70 melted by heating of cooling of electrode object inside contracts, the first fitting 73 is set between main body 341 and first electrode 33, connection
Part 51 is located between protrusion 342 and the hole wall of mounting hole 331, the leak rate of sealing-in when effectively reducing manufacture.
Further, cooling of electrode object 70 further includes the outside bending of periphery along the free end of first fitting 73
The second fitting 75 extended, second fitting 75 are abutted with the periphery of the main body 341.
It should be understood that in order to further enhance the sealing performance between first electrode 33 and second electrode 34, second supports
Fitting 75 is abutted with the periphery of main body 341.
Further, protrusion 342 towards it is described electric discharge inner cavity 50 surface and the discharge face 31 adjacent with the protrusion 342 it
Between the shortest distance be h, the value range of h is 0mm≤h≤0.6mm.
It should be understood that protrusion 342 is less than discharge face 31, and protrusion 342 is towards the electric discharge surface of inner cavity 50 and convex with this
It is h, 0mm≤h≤0.6mm, cooling of electrode object 70 and the higher arc of temperature to play the shortest distance between 342 adjacent discharge faces 31
The areas light electric discharge a are close, and are partially exposed at the areas arc discharge a, and the high heat that arc light generates is quickly passed to cooling of electrode object 70,
70 fast endothermic of cooling of electrode object, allows the temperature of discharge face 31 to cool down, can extend electrode assembly 30 melt burn when
Between, the ability of the power frequency tolerance of discharge face 31 is improved, the gas-discharge tube 100 within the scope of power frequency tolerance time is avoided to be burned out.
When protrusion 342 is more than 0.6mm less than discharge face 31 or with the distance between discharge face 31, preferable cooling electric discharge can not achieve
The effect in face 31.Such as h values be 0mm, 0.25mm, 0.45mm, 0.6mm, preferably the value range of h be 0.25mm≤h≤
0.45mm。
Further, protrusion 342 is equipped with the first cathode coverage face towards the surface for the electrode assembly 30 being arranged in contrast
343, which is equipped with the second cathode coverage face 35, first cathode coverage face towards the surface of first electrode 33
343 and second cathode coverage face 35 be oppositely arranged.
It should be understood that the first cathode coverage face 343 and the second cathode coverage face 35 are oppositely arranged, work as gas-discharge tube
When 100 work, the first cathode coverage face 343 and the second cathode coverage face 35 are coated with cathode emission material, initial for providing
Electronics.
Further, the surface of the first electrode 33 relatively of electrode assembly 30 is equipped with groove 36, and second cathode applies
Clad can 35 is set to the bottom wall of the groove 36, and the depth of the groove 36 is A, and the value range of A is 0mm≤A≤0.6mm.
It should be understood that the second cathode coverage face 35 is set to the bottom wall of groove 36, fierce arc is entered in inert gas
When light discharges, gas ion will bombard discharge face 31, generate sputtering, the first cathode coverage face 343 and the second cathode coverage face 35
It will exempt from, to be bombarded, not generating sputtering, discharge face 31 is mainly metal electrode, the first cathode coverage face 343 and the second cathode
Coated side 35 is cathode emission material, and the fusing point of metal electrode is higher than the fusing point of cathode emission material, and resistance to bombardment ability is strong, therefore
The whole sputtering of gas-discharge tube 100 is smaller, and arcing probability is low, safe.The depth of groove 36 is A, and the value range of A is
0mm≤A≤0.6mm, when the depth of groove 36 is too small, the second cathode coverage face 35 will produce sputtering, when the depth of groove 36
When excessive, the second cathode coverage face 35 does not have the effect for providing initiating electron.To not increase the lightning stroke of discharging gap sacrifice
In the case of through-current capacity, achieve the purpose that fast arc extinction, the structure of groove 36 is set to the protection of cathode emission material more into one
Step improves lightning stroke through-current capacity, which solves well between the Safe Failure and lightning stroke through-current capacity of big power frequency continued flow
Conflicting problem.
Further, gas-discharge tube 100 further includes an at least low temperature seal object 90, and the low temperature seal object 90 is used for
Seal the electric discharge inner cavity 50.
Specifically, low temperature seal object 90 sealing electric discharge inner cavity 50 structure there are many, can be electrode assembly 30 or absolutely
Providing holes on edge body 10, low temperature seal object 90 seals the hole or low temperature seal object is located in, insulator 10 and electrode assembly
Equal structure between 30, this is not restricted.
It should be understood that low temperature seal object 90 is the sealing material for being resistant to low temperature, the material is higher than the low temperature
Environment in can melting deformation even liquefy, lead to not seal, when low temperature seal object 90 melt, electric discharge inner cavity 50 in it is lazy
Property gas be easy by low temperature seal object 90 to realize gas leakage, so that subsequent conditioning circuit is cut off rapidly.Low temperature seal object 90 and temperature
The areas higher arc discharge a are close, and are partially exposed at the areas arc discharge a, and the high heat that arc light generates is quickly passed to low temperature
Sealant makes it melt quickly, generates gas leakage so that extraneous air rapidly enters arc discharge area, raises arc voltage, promotes breakdown
Voltage generates gas leakage, Safe Failure to rapid breaking arc.To not increase discharging gap sacrifice lightning stroke through-current capacity
In the case of, achieve the purpose that fast arc extinction.
On the one hand, cooling of electrode object 70 cools down it in 30 temperature rise of electrode assembly, delays discharge face 31 warm
The rising of degree so that the temperature of arc discharge has time enough to be transmitted to low temperature seal object 90, this can expand discharge tube
The electric current of gas leakage open failure, gas-discharge tube 100 can occur below gas leakage Safe Failure in 60A.
Referring again to Figure 12 and Figure 13, an at least electrode assembly 30 includes first electrode part 37 and an at least second electrode
Part 38, the first electrode part 37 offer at least sealing hole 371 for being connected to the electric discharge inner cavity 50, the second electrode part
38 block the sealing hole 371, and the low temperature seal object 90 is located between the first electrode part 37 and second electrode part 38.
It should be understood that when the power current of low current flows through, what low temperature seal object 90 absorbed heat makes its heating, but extraneous
Can carry out cooling to the cooling of electrode object 70 outside being exposed to makes its cooling, when internal and external temperature reaches balance, gas-discharge tube 100
It is constantly in state of the conducting without open circuit, opens a way in low current larger by external influence, there is the risk that do not open a way.In electricity
The low temperature seal of setting elsewhere object 90 outside 70 position of pole cooling thing, in low current low temperature seal object 90 far from arc light area,
Heat can be continued to build up in lasting power current, 100 gas leakage of gas-discharge tube when reaching the fusing point of low temperature seal object 90, electricity
Arc is cut off, and realizes safe open failure.When high current power current acts on, arc light area temperature rises rapidly, cooling of electrode
Object 70, which absorbs heat, delays the rising of 31 temperature of discharge face, before 31 surface temperature of discharge face is not up to fusing point, cooling of electrode object 70
It is rapidly reached the fusing point or softening point of cooling of electrode object 70, electric discharge 50 body leakproofness of inner cavity is destroyed, and ambient atmos quickly enter arc
Light region of discharge, cooling discharge face 31, neutralizes discharge ion and electronics, increases the insulating properties of gas, and quick breaking arc realizes peace
Standard-sized sheet road.
Referring again to Figure 14 and Figure 15, insulator 10 is equipped with an at least gap 13, and the low temperature seal object 90 seals institute
State gap 13.
It should be understood that by opening up gap 13 in insulator 10, when the temperature rise in electric discharge inner cavity 50 a to fixed number
Value, 100 gas leakage of gas-discharge tube, arc cutting when reaching the fusing point of low temperature seal object 90 realize safe open failure.
Further, low temperature seal object 90 is located between at least one electrode assembly 30 and the insulator 10.
It should be understood that low temperature seal object 90 is located at least between an electrode assembly 30 and insulator 10, when in electric discharge
Temperature rise in chamber 50 is to certain numerical value, and 100 gas leakage of gas-discharge tube, electric arc are cut when reaching the fusing point of low temperature seal object 90
It is disconnected, realize safe open failure.
Further, an at least electrode assembly 30 is equipped with intercommunicating pore (not shown), and the low temperature seal object 90 seals described
Intercommunicating pore.
It should be understood that by the way that intercommunicating pore is arranged in electrode assembly 30, when the temperature rise in electric discharge inner cavity 50 is to centainly
Numerical value, 100 gas leakage of gas-discharge tube, arc cutting when reaching the fusing point of low temperature seal object 90, realizes safe open failure.
In the present embodiment, low temperature seal object 90 is solder or low-temperature adhesive.
It should be understood that low temperature seal object 90 is solder or low-temperature adhesive.Solder have low temperature soldering or
Glass solder, for fusing point at 350 DEG C or so, low-temperature adhesive has the organic bonds such as glue.
In addition, the areas low temperature seal object 90 and temperature higher arc discharge a are close in the present embodiment, and it is partially exposed at arc
The areas light electric discharge a, the high heat that arc light generates are quickly passed to low temperature seal layer, it are made to melt quickly, generate gas leakage so that external
Air rapidly enters arc discharge area, raises arc voltage, promotes breakdown voltage, to rapid breaking arc, generates gas leakage, safety is lost
Effect.
The utility model also proposes a kind of overvoltage protection, which includes gas-discharge tube 100,
The concrete structure of the gas-discharge tube 100 is with reference to above-described embodiment, since this overvoltage protection uses above-mentioned all realities
Whole technical solutions of example, therefore at least all advantageous effects caused by the technical solution with above-described embodiment are applied, herein
No longer repeat one by one.
The above is only the preferred embodiment of the present invention, and it does not limit the scope of the patent of the present invention,
Under every utility model in the utility model is conceived, equivalent structure made based on the specification and figures of the utility model
Transformation, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (21)
1. a kind of gas-discharge tube, which is characterized in that including：
An at least insulator, the insulator are equipped with through-hole；
At least two electrode assemblies, at least two electrode assembly are oppositely arranged, and at least two electrode assembly is opposite
Surface formed discharge face, the insulator and at least two electrode assemblies are enclosed an electric discharge inner cavity, the through-hole jointly
It is connected to the electric discharge inner cavity；
An at least cooling of electrode object, the cooling of electrode object are connect with an electrode assembly, and cooling of electrode object direction electric discharge
The shortest distance between the surface of inner cavity and the discharge face of the electrode assembly is H, and the value range of H is 0mm≤H≤1.2mm.
2. gas-discharge tube as described in claim 1, which is characterized in that the cooling of electrode object is carried on the back set on the electrode assembly
Surface from the electric discharge inner cavity.
3. gas-discharge tube as described in claim 1, which is characterized in that the cooling of electrode object is set to the electrode assembly court
To the surface of the electric discharge inner cavity.
4. gas-discharge tube as described in claim 1, which is characterized in that an at least electrode assembly is equipped with an at least via, institute
It states cooling of electrode object and is contained in the via, with the closed electric discharge inner cavity.
5. gas-discharge tube as described in claim 1, which is characterized in that an at least electrode assembly includes first electrode and at least
One second electrode, the first electrode offer at least mounting hole for being connected to the electric discharge inner cavity, and the second electrode blocks
The mounting hole, the cooling of electrode object are located between the first electrode and second electrode, to seal the electric discharge inner cavity.
6. gas-discharge tube as claimed in claim 5, which is characterized in that the second electrode include main body and be set to the master
The protrusion of body, the main body are connected with the outer surface of first electrode, and the protrusion is contained in the mounting hole, the cooling of electrode
Object is located between the protrusion and the hole wall of the mounting hole.
7. gas-discharge tube as claimed in claim 6, which is characterized in that the cooling of electrode object includes circular connector and edge
The first fitting that the outside bending of periphery of one end of the connector extends, the connector is located in the protrusion and institute
Between the hole wall for stating mounting hole, the outer surface of two surfaces of first fitting respectively with the main body and first electrode is supported
It connects.
8. gas-discharge tube as claimed in claim 7, which is characterized in that the cooling of electrode object further includes along described first
The second fitting that the outside bending of periphery of the free end of fitting extends, second fitting and the periphery of the main body support
It connects.
9. gas-discharge tube as claimed in claim 6, which is characterized in that it is described protrusion towards it is described electric discharge inner cavity surface and
The shortest distance with the protrusion between adjacent discharge face is h, and the value range of h is 0mm≤h≤0.6mm.
10. gas-discharge tube as claimed in claim 9, which is characterized in that the value range of h is 0.25mm≤h≤0.45mm.
11. gas-discharge tube as claimed in claim 6, which is characterized in that the electrode that the protrusion direction is arranged in contrast
The surface of component is equipped with the first cathode coverage face, which is equipped with the second cathode coverage face towards the surface of first electrode,
First cathode coverage face and the second cathode coverage face are oppositely arranged.
12. gas-discharge tube as claimed in claim 11, which is characterized in that the relatively described first electrode of the electrode assembly
Surface is equipped with groove, and second cathode coverage face is set to the bottom wall of the groove, and the depth of the groove is A, the value model of A
It encloses for 0mm≤A≤0.6mm.
13. gas-discharge tube as described in claim 1, which is characterized in that the value range of H is 0mm≤H≤0.6mm.
14. gas-discharge tube as described in claim 1, which is characterized in that the cooling of electrode object is solder or low
Warm adhesive or silica gel.
15. such as claim 1 to 14 any one of them gas-discharge tube, which is characterized in that the gas-discharge tube further includes
An at least low temperature seal object, the low temperature seal object is for sealing the electric discharge inner cavity.
16. gas-discharge tube as claimed in claim 15, which is characterized in that the low temperature seal object is located at least described in one
Between electrode assembly and the insulator.
17. gas-discharge tube as claimed in claim 15, which is characterized in that an at least electrode assembly include first electrode part and
An at least second electrode part, the first electrode part offer be connected to it is described electric discharge inner cavity an at least sealing hole, described second
Electrode piece blocks the sealing hole, and the low temperature seal object is located between the first electrode part and second electrode part.
18. gas-discharge tube as claimed in claim 15, which is characterized in that the insulator is equipped with an at least gap, described
Low temperature seal object seals the gap.
19. gas-discharge tube as claimed in claim 15, which is characterized in that an at least electrode assembly is equipped with intercommunicating pore, described
Low temperature seal object seals the intercommunicating pore.
20. gas-discharge tube as claimed in claim 15, which is characterized in that the low temperature seal object is solder or low
Warm adhesive.
21. a kind of overvoltage protection, which is characterized in that the overvoltage protection includes that claim 1 to 20 is any
Gas-discharge tube described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820109151.4U CN207925432U (en) | 2018-01-22 | 2018-01-22 | Gas-discharge tube and overvoltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820109151.4U CN207925432U (en) | 2018-01-22 | 2018-01-22 | Gas-discharge tube and overvoltage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207925432U true CN207925432U (en) | 2018-09-28 |
Family
ID=63605321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201820109151.4U Active CN207925432U (en) | 2018-01-22 | 2018-01-22 | Gas-discharge tube and overvoltage protection |
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| Country | Link |
|---|---|
| CN (1) | CN207925432U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091531A (en) * | 2018-01-22 | 2018-05-29 | 东莞市阿甘半导体有限公司 | Gas-discharge tube and overvoltage protection |
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2018
- 2018-01-22 CN CN201820109151.4U patent/CN207925432U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091531A (en) * | 2018-01-22 | 2018-05-29 | 东莞市阿甘半导体有限公司 | Gas-discharge tube and overvoltage protection |
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Effective date of registration: 20191111 Address after: 518000 west side of building e, zone a, Hongfa science and Technology Industrial Park, Tangtou community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Bencent Electronics Co., Ltd. Address before: 523000 Guangdong province Dongguan city of Songshan Lake High and New Technology Industrial Development Zone, No. 8 Industrial South Road, the 1 floor of the venture building Patentee before: Dongguan Agam Semiconductor Co., Ltd. |
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| TR01 | Transfer of patent right | ||
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Address after: 518000 west side of 1st floor, building e, area a, Hongfa science and Technology Industrial Park, Tangtou community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Penang Electronics Co.,Ltd. Address before: 518000 west side of 1st floor, building e, area a, Hongfa science and Technology Industrial Park, Tangtou community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Bencent Electronics Co.,Ltd. |
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