CN205177764U - Gas discharge tube - Google Patents
Gas discharge tube Download PDFInfo
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- CN205177764U CN205177764U CN201520998858.1U CN201520998858U CN205177764U CN 205177764 U CN205177764 U CN 205177764U CN 201520998858 U CN201520998858 U CN 201520998858U CN 205177764 U CN205177764 U CN 205177764U
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- low temperature
- gas discharge
- discharge tube
- temperature seal
- seal binding
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Abstract
The utility model provides a gas discharge tube, including two at least electrodes and with electrode sealing connection forms the insulating body of the inner chamber that discharges, be equipped with sealedly among the gas discharge tube the low temperature seal binder of inner chamber discharges, the low temperature seal binder takes place to melt when specific low temperature, makes gas leakage takes place for the inner chamber that discharges. The utility model discloses a gas discharge tube is standing the thunderbolt or during the surge overvoltage, can play the function of release lightning current or overvoltage, and, standing certain lasting power current or too big power current, heat up to melting because of generating heat during the low temperature seal binder, gas leakage can take place and send and open a way for this gas discharge tube, cuts off follow -up electric current rapidly.
Description
Technical field
The utility model relates to overvoltage protection product scope, particularly relates to a kind of gas discharge tube.
Background technology
Gas discharge tube is a kind of switching mode protection device, uses usually used as overvoltage protecting device.The general gas discharge tube used is formed by insulation body and two ends sealing electrode thereof at present, inner chamber filling with inert gas.When the voltage at gas discharge pipe electrode two ends exceedes the puncture voltage of gas, will cause gap discharge, this gas discharge tube becomes low resistance state from high-impedance state rapidly, forms conducting, thus protects other devices in parallel with it.But simultaneously, if this overvoltage duration is longer or the frequency of occurrences is higher or it is long-time to occur or the power frequency overcurrent of big current time, then gas discharge tube is because bearing for a long time or overcurrent and cause heating up frequently, too high temperature not only can affect the safe handling of other devices in circuit, and the risk making this gas discharge tube there is short circuit or burst, even the circuit board of client is burnt formation fire.
Utility model content
The purpose of this utility model is to provide a kind of gas discharge tube, can either provide effective overvoltage protection for circuit, can form open circuit again, cut off circuit in time when overcurrent heats up.
In view of this, the utility model embodiment provides a kind of gas discharge tube, comprise at least two electrodes and be tightly connected with described electrode and form the insulation body of the inner chamber that discharges, the low temperature seal binding sealing described electric discharge inner chamber is provided with in described gas discharge tube, described low temperature seal binding melts when specific low temperature, described electric discharge inner chamber is leaked gas, and forms open circuit.
Further, electrode described at least one is provided with axial air-vent, and the inner of described air-vent connects described electric discharge inner chamber, and the outer end of described air-vent connects cover plate by described low temperature seal binding.
Further, electrode described at least one is provided with radial air-vent, at least one port of described radial air-vent connects described electric discharge inner chamber, described radial air-vent is through the groove of described electrode outer surface, be provided with the cover plate covering described groove above described groove, described cover plate is connected to described electrode outer surface by described low temperature seal binding.
Further, described insulation body is provided with air-vent, and the outer end of described air-vent connects cover plate by described low temperature seal binding.
Further, described insulation body is provided with disconnection layer makes described insulation body radial direction be divided into two, and described low temperature seal binding is located in described disconnection layer, and be tightly connected the two joint insulation bodys be divided into two.
Further, the target of described gas discharge tube is provided with disconnection layer makes described target be split up into two parts, and described low temperature seal binding is located in described disconnection layer, and be tightly connected target described in separated two parts.
Further, electrode described at least one and adopt low temperature seal binding to be connected and sealed between described insulation body.
Further, describedly adopt low temperature seal binding to be connected and sealed between electrode and described insulation body described at least one, comprising:
Be provided with metal layer or becket between described electrode and described insulation body, between described electrode and described metal layer or described becket, adopt low temperature seal binding to be connected and sealed.
Further, described gas discharge tube also comprises spring assembly, described spring assembly has at least one free end, this free end is depressed into contraction state by the electrode bonded with described low temperature seal binding, when there is fusing in described low temperature seal binding, the reaction force of this free end to described electrode is greater than the bonding force between described electrode and described low temperature seal binding, and this free end stretches thus pulls open the electrode bonded with described low temperature seal binding.
Further, arranging described low temperature seal binding is given shape, makes described low temperature seal binding meet specific fusing requirement.
Further, on described electrode or described low temperature seal binding or described insulation body, arrange easy leak source, other positions relative are easy to fusing more in the position of described easy leak source to make described low temperature seal binding.
Further, described electric discharge lumen loading has insulated particle thing.
The gas discharge tube that the utility model embodiment provides, when standing Lightning Over-voltage, can play the performance of overvoltage protection; And living through big current or long-time overcurrent, when being warming up to the described low temperature seal binding of fusing because of heating, can there is gas leakage and cause open circuit in this gas discharge tube, thus cut off overcurrent, has good over-voltage and over-current protective value.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the axial section of the gas discharge tube that the utility model embodiment one provides;
Fig. 2 is the axial section of the gas discharge tube that the utility model embodiment two provides;
Fig. 3 is the axial section of the gas discharge tube that the utility model embodiment three provides;
Fig. 4 is the axial section of the gas discharge tube that the utility model embodiment four provides;
Fig. 5 is the axial section of the gas discharge tube that the utility model embodiment five provides;
Fig. 6 is the axial section of the gas discharge tube that the utility model embodiment six provides;
Fig. 7 is the axial section of the gas discharge tube that the utility model embodiment seven provides;
Fig. 8 is the axial section of the gas discharge tube that the utility model embodiment eight provides;
Fig. 9 is the axial section of the gas discharge tube that the utility model embodiment nine provides;
Figure 10 is the cross-sectional view of the low temperature seal binding of the gas discharge tube that the utility model embodiment seven provides;
Figure 11 is the axial section of the gas discharge tube of the first preferred version that the utility model embodiment eight provides;
Figure 12 is the axial section of the gas discharge tube of the second preferred version that the utility model embodiment eight provides;
Figure 13 is the axial section of the gas discharge tube of the 3rd preferred version that the utility model embodiment eight provides.
Embodiment
Below with reference to accompanying drawing, following examples are used to be further elaborated the utility model.Need predeclared, the solder that the fusing point that high-temperature solder alleged by the utility model refers to is greater than 500 DEG C, namely high temperature be greater than the temperature of 500 DEG C; Low temperature alleged by the utility model is the lower temperature of this high temperature relatively, is the temperature of less than 500 DEG C and 500 DEG C; Low temperature seal binding alleged by the utility model is the encapsulant that can tolerate low temperature, and this material can even liquefy by melting deformation in the environment higher than described low temperature, causes sealing; The utility model alleged insulation body is glass tube, porcelain tube or other be suitable for doing the insulation body of the material of gas discharge tube; Gas discharge tube alleged by the utility model comprises diode, triode and multi-electrode tube.
Referring to Fig. 1, is the axial section of the gas discharge tube that the utility model embodiment one provides.As shown in Figure 1, the gas discharge tube 1 of the present embodiment comprises: electrode 11, insulation body 12, low temperature seal binding 13, air-vent 14 and cover plate 15.Described electrode 11 is tightly connected with described insulation body 12 and forms the inner chamber 16 that discharges, and described air-vent 11 is arranged on described electrode 11, axially arranges.The inner of described air-vent 11 connects described electric discharge inner chamber 16, and outer end connects described cover plate 15 by described low temperature seal binding 13.
Concrete, described electrode 11 adopts high-temperature solder 17 to seal with described insulation body 12, and preferably, described high-temperature solder 17 is silver-copper brazing alloy.
Concrete, described low temperature seal binding 13 is solder or low-temperature adhesive.Preferably, described solder is low temperature soldering or glass solder, and fusing point is at about 350 DEG C.Described low-temperature adhesive is the organic bonds such as glue.
In a preferred embodiment, described air-vent 11 has multiple, all arranges on one of the electrodes.In another preferred embodiment, described air-vent 11 has multiple, is separately positioned on each electrode.
In another preferred embodiment, described cover plate 15 is matsurface cover plate or band permeability slot cover plate, to increase the adhesive force of described low temperature seal binding 13 on described cover plate 15, makes sealing effectiveness better.Meanwhile, when described low temperature seal binding 13 melts, the gas in described electric discharge inner chamber 16 leaks gas more easily by matsurface cover plate or the gap of being with permeability slot cover plate, and subsequent conditioning circuit is cut off rapidly.
The present embodiment has the following advantages:
Connect electric discharge inner chamber and outside air-vent owing to being provided with in gas discharge tube, and be provided with low temperature seal binding in the outer end of described air-vent, therefore, when standing Lightning Over-voltage, this gas discharge tube can not only play the performance of overvoltage protection; And; this gas discharge tube is when standing big current or long-time overcurrent is warmed up to specified temp; described low temperature seal binding reaches fusing point and starts fusing; described air-vent leaks gas; extraneous air enters in the electric discharge inner chamber of described gas discharge tube; thus cut off circuit rapidly, protect the safety of circuit.
Referring to Fig. 2, is the axial section of the gas discharge tube that the utility model embodiment two provides.As shown in Figure 2, the gas discharge tube 2 of the present embodiment comprises: electrode 21, insulation body 22, low temperature seal binding 23, air-vent 24 and cover plate 25.With embodiment illustrated in fig. 1 unlike, in the present embodiment, air-vent 24 is radial settings, a port or two, the left and right port of described radial air-vent 24 connect described electric discharge inner chamber, described radial air-vent 24 is through the groove of described electrode 21 outer surface, be provided with the cover plate 25 covering described groove above described groove, described cover plate 25 is connected to described electrode 21 outer surface by described low temperature seal binding 23.Remaining part is all identical with embodiment described in Fig. 1, repeats no more herein.
The present embodiment has the following advantages:
Connect electric discharge inner chamber and outside air-vent owing to being provided with in gas discharge tube, and be provided with low temperature seal binding in the outer end of described air-vent, therefore, when standing Lightning Over-voltage, this gas discharge tube can not only play the performance of overvoltage protection; And; this gas discharge tube is when standing big current or long-time overcurrent is warmed up to specified temp; described low temperature seal binding reaches fusing point and starts fusing; described air-vent leaks gas; extraneous air enters in the electric discharge inner chamber of described gas discharge tube; thus cut off circuit rapidly, protect the safety of circuit.
Referring to Fig. 3, is the axial section of the gas discharge tube that the utility model embodiment three provides.As shown in Figure 3, the gas discharge tube 3 of the present embodiment comprises: electrode 31, insulation body 32, low temperature seal binding 33.
Concrete, be provided with disconnection layer in the middle of described insulation body 32 and described insulation body radial direction is divided into two, described low temperature seal binding 32 is located in described disconnection layer, and be tightly connected the two joint insulation bodys be divided into two.Certainly, also can be regarded as, be sealed connected together by described low temperature seal binding 32 by two insulation bodys 32, its effect is the same with principle with the present embodiment three.
In a preferred embodiment, described low temperature seal binding 32 is arranged on the centre of described disconnection layer, more easily absorbs the heat of discharge tube when lasting arc discharge during power current, gas leakage open failure more easily occurs, thus cuts off circuit.
As another alternative embodiments of the present embodiment, also air-vent (not shown) can be established on described insulation body 32, the outer end of described air-vent connects cover plate by described low temperature seal binding and seals, and its effect and principle are still the same with the present embodiment three.
The present embodiment has the following advantages:
Owing to being provided with the disconnection layer with the sealing of low temperature seal binding in the insulation body of gas discharge tube, therefore, when standing Lightning Over-voltage, this gas discharge tube can not only play the performance of overvoltage protection; And; this gas discharge tube is when standing big current or long-time overcurrent is warmed up to specified temp; described low temperature seal binding reaches fusing point and starts fusing; described disconnection layer is leaked gas; extraneous air enters in the electric discharge inner chamber of described gas discharge tube; thus cut off circuit rapidly, protect the safety of circuit.
Referring to Fig. 4, is the axial section of the gas discharge tube that the utility model embodiment four provides.As shown in Figure 4, the gas discharge tube 4 of the present embodiment comprises: electrode 41, insulation body 42, low temperature seal binding 43.
Concrete, the gas discharge tube 4 described in the present embodiment is triode, comprises upper end electrode, lower end electrode and target.
The target 41 of described gas discharge tube 4 is provided with disconnection layer makes described target 41 be split up into two parts, and described low temperature seal binding 43 is located in described disconnection layer, and be tightly connected target 41 described in separated two parts.
The present embodiment has the following advantages:
Owing to being provided with the disconnection layer with the sealing of low temperature seal binding in the target of gas discharge tube, therefore, when standing Lightning Over-voltage, this gas discharge tube can not only play the performance of overvoltage protection; And; this gas discharge tube is when standing big current or long-time overcurrent is warmed up to specified temp; described low temperature seal binding reaches fusing point and starts fusing; described disconnection layer is leaked gas; extraneous air enters in the electric discharge inner chamber of described gas discharge tube; thus cut off circuit rapidly, protect the safety of circuit.
Referring to Fig. 5, is the axial section of the gas discharge tube that the utility model embodiment five provides.As shown in Figure 5, the gas discharge tube 5 of the present embodiment comprises: electrode 51, insulation body 52, low temperature seal binding 53.
With embodiment described in Fig. 4 unlike, the disconnection layer of the target 51 in the present embodiment is broken line opening shapes, and embodiment described in Fig. 4 to interrupt layers apart be straight line opening shape, its low temperature seal binding 53 is arranged on the section that is connected with the linear interior that discharges.Remaining part is all identical with embodiment described in Fig. 4, repeats no more herein.
The present embodiment has the following advantages:
Owing to being provided with the disconnection layer of broken line opening shape in the target of gas discharge tube, and seal its port be connected with electric discharge linear interior with low temperature seal binding, described low temperature seal binding, when standing product reflux welding, low temperature seal binding does not directly contact with the soldering-tin layer of paster external electrode, opening has the effect of heat radiation, makes low temperature seal binding be not easy heat damage when Reflow Soldering is welded, and produces gas leakage.But when standing Lightning Over-voltage, this gas discharge tube can not only play the performance of overvoltage protection; And; this gas discharge tube is when standing big current or long-time overcurrent is warmed up to specified temp; described low temperature seal binding reaches fusing point and starts fusing; described disconnection layer is leaked gas; extraneous air enters in the electric discharge inner chamber of described gas discharge tube; thus cut off circuit rapidly, protect the safety of circuit.
Referring to Fig. 6, is the axial section of the gas discharge tube that the utility model embodiment six provides.As shown in Figure 6, the gas discharge tube 6 of the present embodiment comprises: electrode 61, insulation body 62, low temperature seal binding 63.
To be arranged on unlike, the low temperature seal binding 63 in the present embodiment on the section that is connected with gas discharge tube outer linear with embodiment described in Fig. 5.Remaining part is all identical with embodiment described in Fig. 5, repeats no more herein.
The present embodiment has the following advantages:
Owing to being provided with the disconnection layer of fold-line-shaped in the target of gas discharge tube, and seal its port be connected with gas discharge tube outer linear with low temperature seal binding, its good sealing effect, described low temperature seal binding heat absorption is not easily melted comparatively slowly, is suitable for requiring slower occasion to burn-off rate.When standing Lightning Over-voltage, this gas discharge tube can not only play the performance of overvoltage protection; And; this gas discharge tube is when standing big current or long-time overcurrent is warmed up to specified temp; described low temperature seal binding reaches fusing point and starts fusing; described disconnection layer is leaked gas; extraneous air enters in the electric discharge inner chamber of described gas discharge tube; thus cut off circuit rapidly, protect the safety of circuit.
Referring to Fig. 7, is the axial section of the gas discharge tube that the utility model embodiment seven provides.As shown in Figure 7, the gas discharge tube 7 of the present embodiment comprises: electrode 71, insulation body 72 and low temperature seal binding 73.
Concrete, described insulation body 72 has upper and lower two ports, is called the first port and the second port.Sealed by low temperature seal binding 73 between first port of described insulation body 72 and described electrode 71.
In a preferred embodiment, the first port of described insulation body 72 is metal layer, and described low temperature seal binding 73 is solder.Preferably, described metal layer is molybdenum manganese layer, can be one deck or multilayer.Preferably, described solder is low temperature soldering.
In another preferred embodiment, the first port of described insulation body 72 is ceramic whiteware, and described low temperature seal binding 73 is low-temperature adhesive.Preferably, described low-temperature adhesive 73 is the organic bonds such as glue.
In a preferred embodiment, sealed by low temperature seal binding 73 between the second port of described insulation body 72 and described electrode 71.
Concrete, described second port is metal layer or ceramic whiteware, and when the second port is metal layer, described low temperature seal binding is solder; When the second port is ceramic whiteware, described low temperature seal binding is low-temperature adhesive.
In a preferred embodiment, the bond area of described insulation body 72 and described electrode 71 is set, thus makes described low temperature seal binding 73 meet specific fusing requirement.Concrete, described specific fusing requirement is: in side circuit, according to circuit environment for use and the resistance to elevated temperatures needing protection device, sets the burn-off rate of described low temperature seal binding 73.Such as: circuit normal working temperature is 0 ~ 350 DEG C; certain electronic devices and components that need protect the highest high temperature resistant be 370 DEG C continue 30 seconds; the specific fusing requirement that then described low temperature seal binding 73 need meet is: 0 ~ 350 DEG C non-fusible; fusing is started in 350 DEG C ~ 370 DEG C intervals; must melt in 25 seconds when reaching 370 DEG C; thus make described gas discharge tube gas leakage open circuit, protect this electronic devices and components.
Preferably, arranging described insulation body 72 has following four kinds of methods with the bond area of described electrode 71, comprising:
Method one, arranging the footpath of described insulation body 72 wide is specific width, to make the contact area of its and low temperature seal binding 73 for particular area, the burn-off rate of the described low temperature seal binding 13 of convenient control.
Method two, the port being undertaken sealing by low temperature seal binding 73 of described insulation body 72 arranges the projection of specific width, and this projection and described low temperature seal binding 73 bond, the convenient burn-off rate controlling described low temperature seal binding 73.
Method three, arranging described low temperature seal binding 73 is specific width, thus the convenient burn-off rate controlling described low temperature seal binding 73.
Method four, arrange the projection of specific width at the inner surface contacted with described low temperature seal binding 73 of described electrode 71, this projection and described low temperature seal binding 73 bond, the convenient burn-off rate controlling described low temperature seal binding 73.
Preferably, on the port of described electrode 71 and/or described low temperature seal binding 73 and/or described insulation body 72, easy leak source is set, make described insulation body 72 and described electrode 71 be less than the bond area of other positions at the bond area of described easy leak source position, described easy leak source is set to one or more.Concrete, incorporated by reference to the cross-sectional view of the low temperature seal binding 73 of the gas discharge tube provided for the present embodiment with reference to Figure 10, Figure 10, multiple easy leak source 101 is set in figure.
Concrete, described easy leak source 101 is the position of the easy fusings such as described low temperature seal binding 73 adhesive force is the most weak, material is minimum, and fusing makes described gas discharge tube leak gas, and cuts off circuit.
The present embodiment has the following advantages:
The gas discharge tube of the present embodiment is owing to using low temperature seal binding to seal it at the port of insulation body, and therefore, when standing Lightning Over-voltage, this gas discharge tube can not only play the performance of overvoltage protection; And; this gas discharge tube is when standing big current or long-time overcurrent is warmed up to specified temp; described low temperature seal binding reaches fusing point and starts fusing; electric discharge inner chamber leaks gas; extraneous air enters in the electric discharge inner chamber of described gas discharge tube; thus cut off circuit rapidly, protect the safety of circuit.
Referring to Fig. 8, is the axial section of the gas discharge tube that the utility model embodiment eight provides.As shown in Figure 8, the gas discharge tube 8 of the present embodiment comprises: electrode 81, insulation body 82, low temperature seal binding 83, becket 84 and high-temperature solder layer 85.Described insulation body 82 has upper and lower two ports, and be tightly connected two electrodes 81 respectively.Concrete, the upper port of insulation body 82 to be tightly connected becket 84 by high-temperature solder layer 85, and becket 84 to be tightly connected electrode 81 by low temperature seal binding 83; The lower port of insulation body 82 to be tightly connected electrode 81 by high-temperature solder layer 85.
Concrete, described becket 84 can adapt to and the elevated-temperature seal of described insulation body 82, can adapt to again and described electrode 81 low temperature seal.In a preferred embodiment, described becket 84 is non-oxidation copper ring.In a further advantageous embodiment, the surface contacted with described low temperature seal binding 83 of described becket 84 is matsurface, matsurface strong adhesion, can make described becket 84 more securely with described low temperature seal binding 83 seal bond.In a further advantageous embodiment, the section rings of described becket 84 is wider than the cross-sectional width of described insulation body 82, to increase the contact area of described becket 84 and described low temperature seal binding 83, namely increase both bond area, make described becket 84 more securely with described low temperature seal binding 83 seal bond.
Preferably, the upper port of described insulation body 82 is provided with metal layer (not shown), is preferably molybdenum manganese layer; Described becket 84, by high-temperature solder, is preferably silver-copper brazing alloy, is sealedly connected on the metal layer of described insulation body 82.
The present embodiment has the following advantages:
The gas discharge tube of the present embodiment owing to being provided with becket at the Single port of insulation body, and uses low temperature seal binding to seal it at this port.Therefore, when standing Lightning Over-voltage, this gas discharge tube can not only play the performance of overvoltage protection; And; this gas discharge tube is when standing big current or long-time overcurrent is warmed up to specified temp; described low temperature seal binding reaches fusing point and starts fusing; electric discharge inner chamber leaks gas; extraneous air enters in the electric discharge inner chamber of described gas discharge tube; thus cut off circuit rapidly, protect the safety of circuit.
The present embodiment also has other three preferred versions, and Figure 11 is the axial section of the gas discharge tube of the first preferred version, refers to shown in Figure 11.Gas discharge tube something in common shown in gas discharge tube shown in Figure 11 and Fig. 8 is: electrode, the body that insulate, low temperature seal binding, becket, high-temperature solder layer; Be with the gas discharge tube difference shown in Fig. 8, the gas discharge tube shown in Figure 11 has insulated particle thing 86 at electric discharge lumen loading.Preferably, described insulated particle thing is quartz sand particle.Its advantage is: due at electric discharge lumen loading insulated particle thing; then in electric discharge during cavity discharging the heat that produces by a large amount of absorption of insulated particle thing; make described gas discharge tube when standing big current; the electrode at described electric discharge inner chamber two ends is unlikely to the too fast generation fusing explosion splashing that heats up; for the time has been striven in the gas leakage that is melted to of described low temperature seal binding, strengthen the open-circuit-protection dynamics to circuit further.On the contrary, if do not add quartz sand, then described gas discharge tube is when standing big current, and the heat that sparks is excessive, and described low temperature seal binding may be caused also not have enough time to be melted to gas leakage, and described electrode first melting explosion splashes and causes short circuit.
Figure 12 is the axial section of the gas discharge tube of the second preferred version, refers to shown in Figure 12.Gas discharge tube something in common shown in gas discharge tube shown in Figure 12 and Fig. 8 is: electrode, the body that insulate, low temperature seal binding, becket, high-temperature solder layer; Be with the gas discharge tube difference shown in Fig. 8, gas discharge tube shown in Figure 12 also comprises spring assembly 87, described spring assembly 87 has a free end 871, this free end 871 is depressed into contraction state by the electrode bonded with described low temperature seal binding, when there is fusing in described low temperature seal binding, the reaction force of this free end 871 to described electrode is greater than the bonding force between described electrode and described low temperature seal binding, and this free end 871 stretches thus pulls open the electrode bonded with described low temperature seal binding.In like manner, when described gas discharge tube two ends are all provided with low temperature seal binding, described spring assembly can arrange two free end (not shown)s, as long as the low temperature seal binding of arbitrary free end melts, then this free end stretches and pulls open the electrode of this end.Its advantage is: when described gas discharge tube is when standing big current; diminish as long as described low temperature seal binding starts the bonding force be melted between itself and electrode; namely this spring assembly makes free end stretch because stress balance is broken; pull open rapidly the electrode bonded with described low temperature seal binding; cause rapid air leakage and open a way, strengthening the open-circuit-protection dynamics to circuit further.On the contrary, if do not add spring assembly, then described gas discharge tube is when standing big current, and the heat that sparks is excessive, described low temperature seal binding may be caused also not have enough time to be melted to gas leakage, and described electrode first melting explosion splashes and causes short circuit.
Figure 13 is the axial section of the gas discharge tube of the 3rd preferred version, refers to shown in Figure 13.Gas discharge tube shown in Figure 13 combines the advantage of the gas discharge tube shown in Figure 11 and Figure 12; namely; both spring assembly was set on described gas discharge tube; again at described electric discharge lumen loading insulated particle thing; the described gas discharge tube of further guarantee is when standing big current; can open a way timely, duplicate protection is carried out to circuit.
Referring to Fig. 9, is the axial section of the gas discharge tube that the utility model embodiment nine provides, and described gas discharge tube 9 comprises: insulation body 92, electrode 91, becket 94, low temperature seal binding 93 and high-temperature solder layer 95.Described insulation body 92 has upper and lower two ports, to be tightly connected becket 94 respectively by high-temperature solder layer 95, and becket 94 to be tightly connected electrode 91 by low temperature seal binding 93.
What remind is, the present embodiment is outside " also arranging becket 94 in the lower port of insulation body 92; and the lower port of the body that insulate to be tightly connected becket 94 by high-temperature solder layer 95; becket 94 to be tightly connected electrode 91 by low temperature seal binding 93 ", the feature of remainder is all identical with embodiment illustrated in fig. 8, specifically refer to embodiment illustrated in fig. 8, repeat no more herein.Becket and low temperature seal binding are all set at two ports of insulation body 92, make this gas discharge tube be more prone to when overcurrent is heating up, gas leakage occurs and cuts off circuit, ensure the safety of circuit further.
The present embodiment has the following advantages:
The gas discharge tube of the present embodiment owing to being provided with becket on two ports of insulation body, and uses low temperature seal binding to seal it at described port.Therefore, when standing Lightning Over-voltage, this gas discharge tube can not only play the performance of overvoltage protection; And; this gas discharge tube is when standing big current or long-time overcurrent is warmed up to specified temp; the described low temperature seal binding of any one port reaches fusing point and starts fusing; electric discharge inner chamber leaks gas; extraneous air enters in the electric discharge inner chamber of described gas discharge tube; thus cut off circuit rapidly, protect the safety of circuit.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.Some technical characteristic in above-mentioned any embodiment, also can be diverted in other embodiments, such as, the insulate setting of insulated particle thing in the setting of bond area of body and electrode, the setting of easy leak source, the inner chamber that discharges, arranging of spring assembly all can be applied in other embodiments.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.As long as have employed low temperature seal binding to seal electric discharge inner chamber; and described low temperature seal binding is when there is fusing in specific low-temperature melting point; can make described electric discharge inner chamber that the gas discharge tube of gas leakage occurs; among the protection range being all in the application, no matter and this low temperature seal binding is arranged at the position, where of this gas discharge tube in which way.
Claims (12)
1. a gas discharge tube, comprise at least two electrodes and be tightly connected with described electrode and form the insulation body of the inner chamber that discharges, its feature exists: be provided with the low temperature seal binding sealing described electric discharge inner chamber in described gas discharge tube, described low temperature seal binding melts when specific low temperature, and described electric discharge inner chamber is leaked gas.
2. gas discharge tube according to claim 1, is characterized in that, electrode described at least one is provided with axial air-vent, and the inner of described air-vent connects described electric discharge inner chamber, and the outer end of described air-vent connects cover plate by described low temperature seal binding.
3. gas discharge tube according to claim 1, it is characterized in that, electrode described at least one is provided with radial air-vent, at least one port of described radial air-vent connects described electric discharge inner chamber, described radial air-vent is through the groove of described electrode outer surface, be provided with the cover plate covering described groove above described groove, described cover plate is connected to described electrode outer surface by described low temperature seal binding.
4. gas discharge tube according to claim 1, is characterized in that, described insulation body is provided with air-vent, and the outer end of described air-vent connects cover plate by described low temperature seal binding.
5. gas discharge tube according to claim 1, it is characterized in that, described insulation body is provided with disconnection layer makes described insulation body radial direction be divided into two, and described low temperature seal binding is located in described disconnection layer, and be tightly connected the two joint insulation bodys be divided into two.
6. gas discharge tube according to claim 1, it is characterized in that, the target of described gas discharge tube is provided with disconnection layer makes described target be split up into two parts, and described low temperature seal binding is located in described disconnection layer, and be tightly connected target described in separated two parts.
7. gas discharge tube according to claim 1, is characterized in that, electrode described at least one and adopt low temperature seal binding to be connected and sealed between described insulation body.
8. gas discharge tube according to claim 7, is characterized in that, describedly adopts low temperature seal binding to be connected and sealed between electrode and described insulation body described at least one, comprising:
Be provided with metal layer or becket between described electrode and described insulation body, between described electrode and described metal layer or described becket, adopt low temperature seal binding to be connected and sealed.
9. gas discharge tube according to claim 8, it is characterized in that, also comprise spring assembly, described spring assembly has at least one free end, this free end is depressed into contraction state by the electrode bonded with described low temperature seal binding, when fusing occurs described low temperature seal binding, the reaction force of this free end to described electrode is greater than the bonding force between described electrode and described low temperature seal binding, and this free end stretches thus pulls open the electrode bonded with described low temperature seal binding.
10. the gas discharge tube according to any one of claim 1-9, is characterized in that, arranging described low temperature seal binding is given shape, makes described low temperature seal binding meet specific fusing requirement.
11. gas discharge tubes according to any one of claim 1-9, it is characterized in that, on described electrode or described low temperature seal binding or described insulation body, easy leak source is set, other positions relative are easy to fusing more in the position of described easy leak source to make described low temperature seal binding, and described easy leak source is set to one or more.
12. gas discharge tubes according to any one of claim 1-9, it is characterized in that, described electric discharge lumen loading has insulated particle thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520998858.1U CN205177764U (en) | 2015-12-04 | 2015-12-04 | Gas discharge tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520998858.1U CN205177764U (en) | 2015-12-04 | 2015-12-04 | Gas discharge tube |
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| Publication Number | Publication Date |
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| CN205177764U true CN205177764U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520998858.1U Expired - Fee Related CN205177764U (en) | 2015-12-04 | 2015-12-04 | Gas discharge tube |
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| Country | Link |
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| CN (1) | CN205177764U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826149A (en) * | 2015-12-04 | 2016-08-03 | 深圳市槟城电子有限公司 | Gas discharge tube |
| CN109301694A (en) * | 2018-10-19 | 2019-02-01 | 华格电子（昆山）有限公司 | A kind of discharge tube and its manufacturing method of more discharge cavity parallel connections |
-
2015
- 2015-12-04 CN CN201520998858.1U patent/CN205177764U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826149A (en) * | 2015-12-04 | 2016-08-03 | 深圳市槟城电子有限公司 | Gas discharge tube |
| WO2017092304A1 (en) * | 2015-12-04 | 2017-06-08 | 深圳市槟城电子有限公司 | Gas discharge tube |
| US10943757B2 (en) | 2015-12-04 | 2021-03-09 | Shenzhen Bencent Telectronics Co., Ltd. | Gas discharge tube |
| CN109301694A (en) * | 2018-10-19 | 2019-02-01 | 华格电子（昆山）有限公司 | A kind of discharge tube and its manufacturing method of more discharge cavity parallel connections |
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| C14 | Grant of patent or utility model | ||
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