CN114203520B - Low electromagnetic interference long arc gas lamp - Google Patents
Low electromagnetic interference long arc gas lamp Download PDFInfo
- Publication number
- CN114203520B CN114203520B CN202111542035.4A CN202111542035A CN114203520B CN 114203520 B CN114203520 B CN 114203520B CN 202111542035 A CN202111542035 A CN 202111542035A CN 114203520 B CN114203520 B CN 114203520B
- Authority
- CN
- China
- Prior art keywords
- electrode
- arc
- gas lamp
- lamp
- electromagnetic interference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012423 maintenance Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 208000032365 Electromagnetic interference Diseases 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
Landscapes
- Discharge Lamp (AREA)
Abstract
The invention relates to a low electromagnetic interference long arc gas lamp, comprising: a first electrode, a lamp tube and a second electrode; the first electrode and the second electrode are packaged at two sides of the lamp tube; the second electrode is provided with a tip. The gas lamp greatly improves the arc stability under the state of the maintaining current, eliminates the instability and the discontinuity of the maintaining current, reduces the electromagnetic interference generated by the arc jump switching of the long-arc pulse gas lamp from an interference source, and improves the electromagnetic compatibility of the long-arc pulse gas lamp.
Description
Technical Field
The invention relates to the field of lighting of lamp tubes, in particular to a low electromagnetic interference long-arc gas lamp.
Background
The current of the existing pulse gas lamp is extremely high in the working state, so that the electrode shape is designed to be a blunt shape suitable for large-current discharge. In the sustain current state, since the discharge current is small, the plasma (arc) is not enough to cover the whole electrode, but the discharge path is continuously switched while being maintained, which is called arc jump.
The jump is that the arc is switched among a plurality of stable states, the time is extremely short, and the working performance of the gas lamp is not influenced in microsecond or even nanosecond level, and the function of the product is not influenced.
However, with the continuous increase of the electromagnetic compatibility requirements of the current industry (such as the medical/military industry in particular), the pulsed gas lamp shows discontinuous/unstable current during the arc jump switching, and shows strong broadband conduction/radiation interference in the frequency domain due to extremely short time of variation in the time domain.
The existing EMC (electromagnetic compatibility, in the same electromagnetic environment, equipment can not influence work because of interference of other equipment, and meanwhile, the equipment does not influence the interference of the work on other equipment, and the EMC comprises two requirements that on one hand, the electromagnetic interference generated by the equipment on the environment in the normal operation process cannot exceed a certain limit value, and on the other hand, the equipment has a certain degree of immunity, namely electromagnetic sensitivity, on the other hand, the electromagnetic interference is reduced by adopting the modes of power-up Lu Pingbo inductance/choke suppression, metal layer shielding and the like so as to meet the standard requirements. However, none of these methods has eliminated the root cause of the problem, and is only a temporary countermeasure.
The design of the gas lamp has not changed even after the gas lamp is mature gradually in the seventh and eighties of the last century, and the design fashion does not consider the influence of electromagnetic compatibility and the like at the moment, so that the design can not meet the requirements of the latest standard.
Disclosure of Invention
The invention aims to provide a low-electromagnetic-interference long-arc gas lamp, which greatly improves the arc stability under the state of maintaining current, eliminates instability and discontinuity of the maintaining current, reduces electromagnetic interference generated by arc jump switching of a long-arc pulse gas lamp from an interference source and improves the electromagnetic compatibility of the long-arc pulse gas lamp.
In order to achieve the above object, the present invention provides the following solutions:
a low electromagnetic interference long arc gas lamp, the long arc gas lamp comprising:
a first electrode, a lamp tube and a second electrode;
the first electrode and the second electrode are packaged at two sides of the lamp tube; the second electrode is provided with a tip.
Optionally, the tip is disposed at an end of the second electrode connected to the lamp tube.
Optionally, the tip is disposed at an end of the second electrode connected to the lamp tube and is recessed inward.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the scheme of the invention notices that the arc jump switching of the long-arc pulse gas lamp is a key cause of generating broadband electromagnetic interference in a maintenance current state, optimizes the electrode by changing the traditional electrode design thought and adopting a method of respectively considering a maintenance current arc path and a working current arc path, and improves the arc stability in the maintenance current state by utilizing a tip discharge principle, eliminates instability and discontinuity of the maintenance current, reduces the electromagnetic interference generated by the arc jump switching of the long-arc pulse gas lamp from an interference source and improves the electromagnetic compatibility of the long-arc pulse gas lamp.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a low electromagnetic interference long arc gas lamp according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of a tip portion of embodiment 1 of the present invention;
FIG. 3 is a low electromagnetic interference long arc gas lamp according to embodiment 2 of the present invention;
fig. 4 is a schematic view of a tip portion of embodiment 2 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a low-electromagnetic-interference long-arc gas lamp, which greatly improves the arc stability under the state of maintaining current, eliminates instability and discontinuity of the maintaining current, reduces electromagnetic interference generated by arc jump switching of a long-arc pulse gas lamp from an interference source and improves the electromagnetic compatibility of the long-arc pulse gas lamp.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1, fig. 1 is a schematic diagram of a low electromagnetic interference long arc gas lamp according to an embodiment of the present invention, the long arc gas lamp includes:
a first electrode 1, a lamp tube 2 and a second electrode 3;
the first electrode 1 and the second electrode 3 are packaged at two sides of the lamp tube 2 and are sintered, melted and fixed by the lamp tube 2; the second electrode 3 is provided with a tip 4.
The tip 4 is disposed at an end of the second electrode 3 connected to the lamp tube 2, as shown in fig. 2.
The gas lamp breaks down the gas in the lamp tube through the voltage difference between the positive electrode and the negative electrode at the two ends of the lamp tube 2 to form arc discharge and emit light, and when the current is smaller, the formed arc is finer, the electrode end face is easy to shift and jump, and stable arc is not easy to form. The end face in the electrode is processed into a plane (or cambered surface) plus a tip shape (tip is lower than the plane), when the passing current is smaller, a tip discharge principle (a discharge phenomenon generated by the sharp part of an object under the action of a strong electric field is called tip discharge, and belongs to corona discharge, and the more sharp the tip of a conductor is, the more obvious the tip effect is under the condition that the charged quantity of the conductor is the same as the surrounding environment thereof), the tip discharge is dominant, and a stable arc (basically no jump) is formed at the tip, which is similar to a constant-current working gas lamp. When the current is large, a coarser stable arc is formed at the flat end of the electrode, so that the gas lamp always forms a stable discharge arc during operation.
Example 2
As another embodiment of the present invention, as shown in fig. 2, the long arc gas lamp includes:
a first electrode 1, a lamp tube 2 and a second electrode 3;
the first electrode 1 and the second electrode 3 are packaged at two sides of the lamp tube 2 and are sintered, melted and fixed by the lamp tube 2; the second electrode 3 is provided with a tip 4.
The tip 4 is disposed at one end of the second electrode 3 connected to the lamp tube 2 and is recessed inward, as shown in fig. 4.
The working principle is the same as that in embodiment 1, and will not be described in detail.
Example 3
As another embodiment of the present invention, a stable arc may be formed by adding an auxiliary electrode. Specifically, the auxiliary electrode is formed by doping, attaching, coating and the like at or near the part of the main electrode, and the form is mainly based on the doping, attaching or coating material which is a low work function substance or a radioactive substance which is easier to emit electrons, so that a stable arc is easier to form.
The definition of the auxiliary electrode is as follows: in a maintenance current operation state of a long arc pulse gas or the like, the portion of the electrode discharge point thereof at the entire electrode fixing position is defined.
The scheme provided by the invention has the following advantages:
1. it was found that arc jump switching in the maintenance current state of a long arc pulsed gas lamp is a significant cause of broadband electromagnetic interference, which is not considered in the existing electrode designs.
2. The electrode of the long-arc pulse gas lamp is provided, and the maintenance current state and the working current state of the electrode need to be uniformly considered and designed, so that different requirements of stable electric arc in the maintenance current state and longer service life of the electrode in the working current state are met.
3. Two typical new electrode designs are proposed, including auxiliary tip electrode forms (sharper auxiliary electrodes for sustaining a current discharge, which form stabilizes the operating current mainly based on the tip discharge principle) and electrode local doping/addition/plating forms auxiliary electrode forms (auxiliary electrodes formed by doping or addition, plating, etc. in the local or near the main electrode, which forms are mainly based on doped, added or plated materials being low work function substances or radioactive substances which are more prone to emit electrons, thus more prone to form stable arcs).
The definition of the auxiliary electrode is as follows: in a state of maintaining current operation such as long-arc pulse gas, the electrode discharge point is limited to a part of the whole electrode fixing position
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (2)
1. A low electromagnetic interference long arc gas lamp, the long arc gas lamp comprising:
a first electrode, a lamp tube and a second electrode;
the first electrode and the second electrode are packaged at two sides of the lamp tube; the second electrode is provided with a tip; the tip is arranged at one end of the second electrode connected with the lamp tube and is recessed inwards.
2. The low electromagnetic interference long arc gas lamp of claim 1, wherein said tip is disposed at an end of said second electrode connected to said lamp tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111542035.4A CN114203520B (en) | 2021-12-16 | 2021-12-16 | Low electromagnetic interference long arc gas lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111542035.4A CN114203520B (en) | 2021-12-16 | 2021-12-16 | Low electromagnetic interference long arc gas lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114203520A CN114203520A (en) | 2022-03-18 |
| CN114203520B true CN114203520B (en) | 2024-03-12 |
Family
ID=80654494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111542035.4A Active CN114203520B (en) | 2021-12-16 | 2021-12-16 | Low electromagnetic interference long arc gas lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114203520B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4097762A (en) * | 1975-08-14 | 1978-06-27 | International Telephone & Telegraph Corporation | Xenon arc discharge lamp having a particular electrode composition and wherein the arc discharge is obtained without heating the electrode |
| JP2003223865A (en) * | 2002-01-31 | 2003-08-08 | Ushio Inc | Positive electrode for discharge lamp and short arc discharge lamp |
| CN101329981A (en) * | 2007-06-22 | 2008-12-24 | 株式会社Orc制作所 | Discharge lamp |
| JP2012248822A (en) * | 2011-05-31 | 2012-12-13 | Npc Inc | Three-electrode long arc xenon discharge tube solar simulator and lighting method therefor |
| JP2015185261A (en) * | 2014-03-20 | 2015-10-22 | 岩崎電気株式会社 | Long arc metal halide lamp |
| JP2017069077A (en) * | 2015-09-30 | 2017-04-06 | 株式会社オーク製作所 | Discharge lamp |
-
2021
- 2021-12-16 CN CN202111542035.4A patent/CN114203520B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4097762A (en) * | 1975-08-14 | 1978-06-27 | International Telephone & Telegraph Corporation | Xenon arc discharge lamp having a particular electrode composition and wherein the arc discharge is obtained without heating the electrode |
| JP2003223865A (en) * | 2002-01-31 | 2003-08-08 | Ushio Inc | Positive electrode for discharge lamp and short arc discharge lamp |
| CN101329981A (en) * | 2007-06-22 | 2008-12-24 | 株式会社Orc制作所 | Discharge lamp |
| JP2012248822A (en) * | 2011-05-31 | 2012-12-13 | Npc Inc | Three-electrode long arc xenon discharge tube solar simulator and lighting method therefor |
| JP2015185261A (en) * | 2014-03-20 | 2015-10-22 | 岩崎電気株式会社 | Long arc metal halide lamp |
| JP2017069077A (en) * | 2015-09-30 | 2017-04-06 | 株式会社オーク製作所 | Discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114203520A (en) | 2022-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2669216A1 (en) | Starting aid for hid lamp | |
| CN114203520B (en) | Low electromagnetic interference long arc gas lamp | |
| CN108598868B (en) | Electrode structure for gas spark switch and design method | |
| RU2007777C1 (en) | Magnetron | |
| CN102737927A (en) | Double electron beam electron gun and gyrotron | |
| CN103578898B (en) | A kind of electronic gun special for electron beam bombardment furnace | |
| Bokhan et al. | Study of the switching rate of gas-discharge devices based on the open discharge with counter-propagating electron beams | |
| WO2014098127A1 (en) | Discharge lamp lighting device | |
| CN111341633B (en) | Safety protection device for high-current negative hydrogen ion source | |
| DE69936929D1 (en) | ELECTRON HIGH-BEAM SCREEN TUBES WITH HIGH VOLTAGE STRENGTH AND CURRENT CONTROL | |
| US11373837B2 (en) | Metal ion source emitting device | |
| CN101834111B (en) | Fluorescent lamp | |
| JP2641461B2 (en) | Aging method of cathode ray tube | |
| CN105390366B (en) | Long arc discharge lamp | |
| CN208352190U (en) | Shielding case suspension type vacuum interrupter | |
| Moskvin et al. | Plasma source for auxiliary anode plasma generation in the electron source with grid plasma cathode | |
| CN218569496U (en) | Corona-assisted triggering gas switching device | |
| CN220985326U (en) | Arc extinguishing circuit of electron gun | |
| He et al. | A study of hollow-cathode electron beam source surface flashover discharge and suppression | |
| CN108183392B (en) | Pre-ionization triggered field distortion type high-pressure gas switch | |
| KR100359663B1 (en) | Electrode for Preventing Spark on Non-Thermal Plasma Reactor for Treating Hazardous Gas | |
| ATE297108T1 (en) | GAS-FILLED PARTICLE ACCELERATOR WITH A PULSED PLASMA SOURCE | |
| RU2209483C2 (en) | Electron-and-ion source | |
| CN116316080A (en) | Long-life repetition frequency high-power gas switch universal structure and design method thereof | |
| CN117154673A (en) | Arc extinguishing circuit of electron gun |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |