CN219696917U - Multi-electrode patch type ceramic gas discharge tube structure - Google Patents
Multi-electrode patch type ceramic gas discharge tube structure Download PDFInfo
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- CN219696917U CN219696917U CN202320243272.9U CN202320243272U CN219696917U CN 219696917 U CN219696917 U CN 219696917U CN 202320243272 U CN202320243272 U CN 202320243272U CN 219696917 U CN219696917 U CN 219696917U
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- 239000000919 ceramic Substances 0.000 title claims abstract description 90
- 229910052751 metal Inorganic materials 0.000 claims abstract description 100
- 239000002184 metal Substances 0.000 claims abstract description 100
- 238000003466 welding Methods 0.000 claims abstract description 44
- PCEXQRKSUSSDFT-UHFFFAOYSA-N [Mn].[Mo] Chemical compound [Mn].[Mo] PCEXQRKSUSSDFT-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims 1
- 229910000679 solder Inorganic materials 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 29
- 229910052573 porcelain Inorganic materials 0.000 description 14
- 239000011261 inert gas Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- 238000009825 accumulation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 but not limited to Substances 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 229910052754 neon Inorganic materials 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a multi-electrode patch type ceramic gas discharge tube structure, which comprises a ceramic cavity piece and at least three metal electrodes which are arranged at intervals and welded on the ceramic cavity piece respectively, wherein a discharge tube inner cavity is formed in the ceramic cavity piece, and each metal electrode extends into the discharge tube inner cavity respectively; the method is characterized in that: the ceramic cavity piece is of an integral ceramic tube structure, electrode mounting holes which are opened outwards and communicated with the inner cavity of the discharge tube are respectively formed in the ceramic cavity piece corresponding to each metal electrode, and each metal electrode comprises an electrode pile part which extends into the inner cavity of the discharge tube and a patch welding part which is arranged at the outer end part of the electrode pile part; the ceramic cavity piece is provided with metal manganese molybdenum layers at the periphery of the outer end opening of each electrode mounting hole site, and the surface mount welding parts of each metal electrode are respectively welded on the corresponding metal manganese molybdenum layers through high-temperature solder layers. Through the structural design, the utility model has the advantages of novel structural design and good stability and reliability.
Description
Technical Field
The utility model relates to the technical field of ceramic gas discharge tubes, in particular to a multi-electrode patch type ceramic gas discharge tube structure.
Background
With the high-speed development of cloud computing industry, internet of things technology and smart power grids, intelligent digital products, mobile offices, intelligent home and the like are increasingly widely applied to daily life of people. The intelligent electrical appliance is the most different from the traditional electrical appliance in terms of high-precision electronic components, has very high requirements on input and output current and voltage stability, and is the basis of all works in research and development institutions of many large enterprises on how to prevent voltage and current surges in electronic road barriers.
Surge is also called surge, and refers to a phenomenon that voltage greatly exceeds normal voltage in a short time; the surge can slowly damage the electric equipment, especially to the precision electric equipment, resulting in reduced functionality or failure; even more, household appliances can be burned immediately to cause fire, so the surge hazard is not neglected.
Where does that surge hazard originate? There are two types of sources of surge hazard: external surges and internal surges. The external surge is mainly derived from lightning, and the other source is overvoltage generated on the power line by switching operation and the like in the power grid. While the internal surges are mainly derived from high power electrical equipment such as elevators, air conditioners and refrigerators. These high power devices require a large amount of electrical energy when starting and shutting down the compressor and motor, and such switching operations can create sudden and short-lived power demands that disrupt voltage stabilization. Although these surges are far less damaging than lightning, their strength can also immediately or slowly damage equipment components, which damage is common in many building power systems.
While surge hazards fall into two main categories: catastrophic and cumulative hazards. A catastrophic surge hazard means that a surge voltage exceeds the withstand capability of the device, and the device is completely destroyed or has a greatly reduced life. The accumulated surge hazard means that a plurality of small surge accumulation effects cause the performance degradation, equipment failure and service life shortening of the semiconductor device, and finally, the production halt or the productivity reduction are caused. Such cumulative surge hazards are often found in precision appliances such as computers, televisions, audio, cell phones, digital cameras, and the like.
In recent years, along with the continuous improvement of the living standard of people and the popularization of intelligent electric appliances in China, the concepts of safety and surge resistance of the electric appliances are also gaining more and more attention.
Among a plurality of surge protection products, the ceramic gas discharge tube is used as the characteristics of large through flow, small junction capacitance and switching characteristics, and is more applied to the surge protection of power and data ports. A ceramic gas discharge tube (GDT for short), wherein the inside of the ceramic gas discharge tube is provided with a closed device formed by filling inert gas in one or more discharge gaps; the electrical properties of ceramic gas discharge tubes depend on factors such as the gas species, gas pressure, internal electrode structure, fabrication process, etc. The two ends of the ceramic gas discharge tube are respectively provided with an electrode, when the voltage applied to the two electrodes reaches the voltage breakdown of the gas in the GDT, the discharge is started, the high impedance is changed into low impedance, the surge voltage is rapidly shorted to be close to zero voltage, and the overcurrent is released to the ground, so that the protection effect on the subsequent circuit is realized.
The patent number is: ZL 202122757414.7, patent name: the Chinese patent utility model of three-terminal isobaric ceramic gas discharge tube comprises a first side electrode, a second side electrode, a middle electrode, a first porcelain tube, a second porcelain tube, a first welding lug, a second welding lug, a third welding lug and a fourth welding lug; the first porcelain tube and the second porcelain tube are respectively arranged at two ends of the middle electrode; the first side electrode, the first welding lug and the third welding lug are all arranged in the second porcelain tube; the first welding lug is positioned between the first side electrode and the second porcelain tube, and the first side electrode is connected with the second porcelain tube through the first welding lug; the third welding lug is positioned between the second porcelain tube and the intermediate electrode, and the second porcelain tube is connected with the intermediate electrode through the third welding lug; the second side electrode, the second welding lug and the fourth welding lug are all arranged in the first porcelain tube; the second welding lug is positioned between the second side electrode and the first porcelain tube, and the second side electrode is connected with the first porcelain tube through the second welding lug; the fourth welding lug is positioned between the first porcelain tube and the intermediate electrode, and the first porcelain tube is connected with the intermediate electrode through the fourth welding lug.
It should be noted that, for the three-terminal isopiestic ceramic gas discharge tube described above, it has the following drawbacks, in particular:
1. the main body consists of two ceramic tubes, the two ceramic tubes are connected through electrodes at the middle position, and when vacuum welding is carried out, the problem that the ceramic tubes are distorted or shifted easily occurs in the main body structure part, so that the stability of the ceramic gas discharge tube structure is influenced;
2. each metal electrode is directly welded on the ceramic tube through a welding lug, and the welding instability problem exists when the metal electrode is directly welded through the welding lug due to the specificity of the ceramic material.
Disclosure of Invention
The utility model aims to provide a multi-electrode patch type ceramic gas discharge tube structure against the defects of the prior art, and the multi-electrode patch type ceramic gas discharge tube structure is novel in design, stable and good in reliability.
In order to achieve the above object, the present utility model is achieved by the following technical scheme.
The multi-electrode patch type ceramic gas discharge tube structure comprises a ceramic cavity piece and at least three metal electrodes which are arranged at intervals and welded on the ceramic cavity piece respectively, wherein a discharge tube inner cavity is formed in the ceramic cavity piece, and each metal electrode extends into the discharge tube inner cavity respectively;
the method is characterized in that: the ceramic cavity piece is of an integral ceramic tube structure, electrode mounting holes which are opened outwards and communicated with the inner cavity of the discharge tube are respectively arranged on the ceramic cavity piece corresponding to each metal electrode,
each metal electrode comprises an electrode pile part extending into the inner cavity of the discharge tube and a patch welding part arranged at the outer end part of the electrode pile part;
the ceramic cavity piece is provided with metal manganese molybdenum layers at the periphery of the outer end opening of each electrode mounting hole site, and the surface mount welding parts of each metal electrode are respectively welded on the corresponding metal manganese molybdenum layers through high-temperature solder layers.
The metal electrodes are respectively formed by stamping metal pieces, and the electrode pile parts and the patch welding parts of the metal electrodes are of an integrated structure.
The electrode piles of the metal electrodes are respectively spaced from the inner wall of the inner cavity of the discharge tube, and the inner end surfaces of the electrode piles of the metal electrodes are respectively provided with an electronic powder layer.
The inner end face of the electrode pile part of each metal electrode is respectively provided with a plurality of end face grooves which are distributed at intervals, and the electronic powder layer is coated or deposited in the end face grooves of the inner end face of the electrode pile part.
Wherein, the inner wall of the inner cavity of the discharge tube is provided with a trigger circuit.
The multi-electrode patch type ceramic gas discharge tube structure comprises three metal electrodes.
The multi-electrode patch type ceramic gas discharge tube structure comprises four metal electrodes, wherein the four metal electrodes are oppositely arranged in pairs.
The multi-electrode patch type ceramic gas discharge tube structure comprises six metal electrodes, wherein the six metal electrodes are oppositely arranged in pairs.
The multi-electrode patch type ceramic gas discharge tube structure comprises eight metal electrodes, wherein the eight metal electrodes are oppositely arranged in pairs.
Compared with the prior art, the utility model has the beneficial effects that:
1. compared with a plurality of ceramic tube combined structures in the prior art, the ceramic cavity piece can realize accurate and rapid positioning, can effectively avoid the problem of twisting and shifting of the ceramic tube part during vacuum welding, and has better stability and reliability;
2. the patch welding part of the metal electrode is welded on the corresponding metal manganese molybdenum layer through the high-temperature solder layer; the metal manganese molybdenum layer is used as a transition layer structure, and the metal electrode is a metal piece, the ceramic cavity piece is a ceramic piece, and the metal piece and the ceramic piece cannot be directly welded; by additionally arranging the metal manganese molybdenum layer structure, the utility model can ensure that the patch welding part of the metal electrode is stably and reliably welded on the ceramic cavity piece through the high-temperature solder layer, so as to achieve the aim of increasing the welding stability and reliability;
3. the utility model has the advantages of novel structural design and good stability and reliability.
Drawings
The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model.
Fig. 1 is a schematic structural view of a first embodiment of the present utility model.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a schematic structural view of a second embodiment of the present utility model.
Fig. 4 is an exploded view of fig. 3.
Fig. 5 is a schematic structural view of a third embodiment of the present utility model.
Fig. 6 is an exploded view of fig. 5.
Fig. 7 is a schematic structural view of a fourth embodiment of the present utility model.
Fig. 8 is an exploded view of fig. 7.
Fig. 9 is a schematic structural view of a fifth embodiment of the present utility model.
Fig. 10 is an exploded view of fig. 9.
Fig. 11 is a schematic structural view of a sixth embodiment of the present utility model.
Fig. 12 is an exploded view of fig. 11.
Fig. 1 to 12 include:
1-a ceramic cavity member; 11-a discharge tube lumen; 12-electrode mounting hole sites; 2-metal electrodes; 21-electrode stub portions; 211-end face grooves; 22-patch welds; a 3-metal manganese molybdenum layer; 4-high temperature solder layer.
Detailed Description
The utility model will be described with reference to specific embodiments.
In a first embodiment, as shown in fig. 1 to 12, a multi-electrode patch type ceramic gas discharge tube structure includes a ceramic cavity member 1, at least three metal electrodes 2 arranged at intervals and welded to the ceramic cavity member 1, wherein a discharge tube cavity 11 is formed in the ceramic cavity member 1, and each metal electrode 2 extends into the discharge tube cavity 11.
As shown in fig. 1 to 6, the multi-electrode patch type ceramic gas discharge tube structure comprises three metal electrodes 2. As shown in fig. 7 and 8, the multi-electrode patch type ceramic gas discharge tube structure comprises four metal electrodes 2, and the four metal electrodes 2 are arranged opposite to each other. As shown in fig. 9 and 10, the multi-electrode patch type ceramic gas discharge tube structure includes six metal electrodes 2, and the six metal electrodes 2 are arranged opposite to each other. As shown in fig. 11 and 12, the multi-electrode patch type ceramic gas discharge tube structure includes eight metal electrodes 2, and the eight metal electrodes 2 are arranged opposite to each other. Of course, the specific number of the metal electrodes 2 is not limited to the first embodiment, i.e., the multi-electrode patch type ceramic gas discharge tube structure of the first embodiment may further include other number of metal electrodes 2.
Further, the ceramic cavity member 1 is of an integral ceramic tube structure, and electrode mounting holes 12 which are open outwards and communicated with the inner cavity 11 of the discharge tube are respectively formed in the ceramic cavity member 1 corresponding to the metal electrodes 2.
Further, each metal electrode 2 comprises an electrode pile portion 21 extending into the inner cavity 11 of the discharge tube, and a patch welding portion 22 arranged at the outer end of the electrode pile portion 21; the surface of the soldering part 22 soldered to the ceramic cavity member 1 is a plane, and the surface of the soldering part 22 soldered to the PCB board is also a plane. When the multi-electrode patch type ceramic gas discharge tube structure of the first embodiment is welded on a PCB, the patch welding portions 22 of the metal electrodes 2 are respectively welded on the corresponding bonding pad positions on the PCB in a patch welding manner.
In addition, the ceramic cavity member 1 is provided with respective metal manganese molybdenum layers 3 on the outer end opening peripheral sides of the respective electrode mounting holes 12, and the patch welding portions 22 of the respective metal electrodes 2 are welded to the respective metal manganese molybdenum layers 3 by the high-temperature solder layers 4.
It should be noted that the inner chamber 11 of the discharge tube of the first embodiment is filled with an inert gas including, but not limited to, argon, nitrogen, neon, or a mixture of a plurality of inert gases, and the like.
It should be emphasized that, compared with the combined structure of a plurality of ceramic tubes in the prior art, the ceramic cavity piece 1 of the first embodiment of the present utility model can realize accurate and rapid positioning, and can effectively avoid the problem of distortion and displacement of the ceramic tube during vacuum welding, thereby achieving better stability and reliability.
Also, the patch welding portion 22 of the metal electrode 2 of the first embodiment is welded to the corresponding metal manganese molybdenum layer 3 by the high temperature solder layer 4; the metal manganese molybdenum layer 3 is used as a transition layer structure, and as the metal electrode 2 is a metal piece and the ceramic cavity piece 1 is a ceramic piece, the metal piece and the ceramic piece cannot be directly welded; by adding the structure of the metal manganese molybdenum layer 3, the first embodiment can make the bonding pad welding portion 22 of the metal electrode 2 be welded on the ceramic cavity member 1 stably and reliably through the high-temperature solder layer 4, so as to achieve the purpose of increasing the welding stability and reliability.
It should be further explained that, for the high temperature solder layer 4 of the first embodiment, it may be a stamped high temperature solid solder sheet assembled between the bonding pad 22 and the metal manganese molybdenum layer 3, or may be a paste solder layer structure formed by uniformly coating paste solder on the metal manganese molybdenum layer 3.
In summary, through the above structural design, the multi-electrode patch type ceramic gas discharge tube structure of the first embodiment has the advantages of novel structural design and good stability and reliability.
As shown in fig. 1 to 12, the second embodiment is different from the first embodiment in that: each metal electrode 2 is formed by stamping a metal piece, and the electrode post 21 and the bonding pad 22 of each metal electrode 2 are integrally formed.
Wherein each metal electrode 2 can be a copper electrode or an alloy electrode; of course, the copper material and the alloy material are not limited to the second embodiment, and the metal electrodes 2 of the second embodiment may be made of other metal materials.
It should be emphasized that, because the metal electrode 2 is formed by stamping a metal piece, the metal electrode 2 with the structural design can effectively ensure the overall strength of the electrode; in the process of welding each metal electrode 2 on the ceramic cavity piece 1 in a high-temperature vacuum brazing mode, the metal electrode 2 with higher strength can be conveniently clamped and positioned on one hand, and on the other hand, the situation that distortion cannot occur during welding can be guaranteed, namely, the welding position of the metal electrode 2 after high-temperature vacuum brazing is good in flatness, stable and reliable.
As shown in fig. 2, 4, 6, 7, 8, 10 and 12, the third embodiment is different from the first embodiment in that: the electrode stub portions 21 of the respective metal electrodes 2 are spaced apart from the inner wall of the inner chamber 11 of the discharge tube, and the inner end surfaces of the electrode stub portions 21 of the respective metal electrodes 2 are provided with an electron powder layer (not shown in the drawing).
Wherein the electron powder layer is composed of various oxide components including, but not limited to, silicon, cerium, titanium, cesium, etc.
Wherein, for the electronic powder layer to be convenient for set up in the interior terminal surface of electrode stake portion 21, this embodiment three can adopt following structural design, and is specific: the inner end surface of the electrode pile portion 21 of each metal electrode 2 is respectively provided with a plurality of end surface grooves 211 which are arranged at intervals, and the electronic powder layer is coated or deposited in the end surface grooves 211 of the inner end surface of the electrode pile portion 21.
The fourth embodiment is different from the first embodiment in that: the inner wall of the inner chamber 11 of the discharge vessel is provided with a trigger circuit (not shown in the figures).
The trigger circuit in the fourth embodiment is a graphite wire or a carbon wire uniformly distributed on the inner wall of the inner cavity 11 of the discharge tube according to actual needs, and the trigger circuit can be disposed on the inner wall of the inner cavity 11 of the discharge tube by chemical deposition and drawing.
The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.
Claims (9)
1. The utility model provides a multi-electrode paster type ceramic gas discharge tube structure, includes ceramic cavity spare (1), at least three interval arrangement and weld in metal electrode (2) of ceramic cavity spare (1) respectively, and the inside shaping of ceramic cavity spare (1) has discharge tube inner chamber (11), and each metal electrode (2) stretches into discharge tube inner chamber (11) respectively;
the method is characterized in that: the ceramic cavity piece (1) is of an integral ceramic tube structure, electrode mounting holes (12) which are open outwards and communicated with the inner cavity (11) of the discharge tube are respectively arranged corresponding to each metal electrode (2) of the ceramic cavity piece (1),
each metal electrode (2) comprises an electrode pile part (21) extending into the inner cavity (11) of the discharge tube and a patch welding part (22) arranged at the outer end part of the electrode pile part (21);
the ceramic cavity piece (1) is provided with metal manganese molybdenum layers (3) on the periphery of the outer end opening of each electrode mounting hole site (12), and the patch welding parts (22) of each metal electrode (2) are welded on the corresponding metal manganese molybdenum layers (3) through high-temperature welding layers (4).
2. The multi-electrode patch-type ceramic gas discharge tube structure according to claim 1, wherein: each metal electrode (2) is formed by stamping a metal piece, and an electrode pile part (21) and a patch welding part (22) of each metal electrode (2) are of an integrated structure.
3. The multi-electrode patch-type ceramic gas discharge tube structure according to claim 1, wherein: the electrode pile parts (21) of the metal electrodes (2) are respectively spaced from the inner wall of the inner cavity (11) of the discharge tube, and the inner end surfaces of the electrode pile parts (21) of the metal electrodes (2) are respectively provided with an electronic powder layer.
4. A multi-electrode patch-type ceramic gas discharge tube structure according to claim 3, wherein: the inner end surface of the electrode pile part (21) of each metal electrode (2) is respectively provided with a plurality of end surface grooves (211) which are distributed at intervals, and the electronic powder layer is coated or deposited in the end surface grooves (211) of the inner end surface of the electrode pile part (21).
5. The multi-electrode patch-type ceramic gas discharge tube structure according to claim 1, wherein: the inner wall of the inner cavity (11) of the discharge tube is provided with a trigger circuit.
6. The multi-electrode patch-type ceramic gas discharge tube structure according to claim 1, wherein: the multi-electrode patch type ceramic gas discharge tube structure comprises three metal electrodes (2).
7. The multi-electrode patch-type ceramic gas discharge tube structure according to claim 1, wherein: the multi-electrode patch type ceramic gas discharge tube structure comprises four metal electrodes (2), wherein the four metal electrodes (2) are oppositely arranged in pairs.
8. The multi-electrode patch-type ceramic gas discharge tube structure according to claim 1, wherein: the multi-electrode patch type ceramic gas discharge tube structure comprises six metal electrodes (2), wherein the six metal electrodes (2) are oppositely arranged in pairs.
9. The multi-electrode patch-type ceramic gas discharge tube structure according to claim 1, wherein: the multi-electrode patch type ceramic gas discharge tube structure comprises eight metal electrodes (2), wherein the eight metal electrodes (2) are oppositely arranged in pairs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320243272.9U CN219696917U (en) | 2023-02-17 | 2023-02-17 | Multi-electrode patch type ceramic gas discharge tube structure |
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|---|---|---|---|
| CN202320243272.9U CN219696917U (en) | 2023-02-17 | 2023-02-17 | Multi-electrode patch type ceramic gas discharge tube structure |
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| CN219696917U true CN219696917U (en) | 2023-09-15 |
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| CN202320243272.9U Active CN219696917U (en) | 2023-02-17 | 2023-02-17 | Multi-electrode patch type ceramic gas discharge tube structure |
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| Country | Link |
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| CN (1) | CN219696917U (en) |
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Effective date of registration: 20240613 Address after: 317600 Xuanmen Industrial Zone, Lupu Town, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: Zhejiang Liyang Semiconductor Co.,Ltd. Country or region after: China Address before: Room 501, Building 6, No. 310, Songbai Road, Liaobu, Liaobu Town, Dongguan City, Guangdong 523000 Patentee before: Guangdong Fuliu Semiconductor Co.,Ltd. Country or region before: China |
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