CN101427432A - Encapsulated, pressure-proof, non-hermetically sealed, rotationally symmetrical high-power spark gap - Google Patents
Encapsulated, pressure-proof, non-hermetically sealed, rotationally symmetrical high-power spark gap Download PDFInfo
- Publication number
- CN101427432A CN101427432A CNA2007800145367A CN200780014536A CN101427432A CN 101427432 A CN101427432 A CN 101427432A CN A2007800145367 A CNA2007800145367 A CN A2007800145367A CN 200780014536 A CN200780014536 A CN 200780014536A CN 101427432 A CN101427432 A CN 101427432A
- Authority
- CN
- China
- Prior art keywords
- electrode
- main electrode
- spring contacts
- face
- trigger
- 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.)
- Pending
Links
Images
Landscapes
- Fuses (AREA)
Abstract
The invention relates to an encapsulated, pressure-resistant, non-hermetically sealed, high-power spark gap having a rotationally symmetrical basic structure, comprising: the discharge electrode arrangement comprises two spaced, oppositely arranged main electrodes, a metal housing with an end-face curl, at least one trigger electrode, a discharge chamber and electrical connection contacts, preferably arranged at the end-face, for the main electrodes, and a main electrode insert and centering body for fixing the main electrodes relatively and relatively to the housing. In a first embodiment of the invention, for contacting the trigger electrode, an insulating wire or preferably a strip conductor is arranged in a gap-shaped space between the outer side of one of the main electrodes and the associated side of the main electrode insert and centering body, wherein the outer connection of the conductor is accessible in the region of the end face of the respective main electrode which is connected to the contact, and the inner, uninsulated end of the conductor is electrically connected to the trigger electrode. In a second embodiment, for contacting the trigger electrode, one of the main electrode insert and the centering body is designed in an insulating manner and has an axially extending bore, in which a spring contact is located, whose inner end contacts the trigger electrode and whose outer end is accessible in the region of the outer contact of the associated end face.
Description
Technical field
The present invention relates to a kind of encapsulation as described in the preamble, withstand voltage formation, non-gas-tight seal, basic structure by claim 1 is rotational symmetric duty spark gap, it has: the main electrode that is oppositely arranged at two intervals, metal shell with end face crimping, at least one trigger electrode, a discharge cavity and the preferred electrical connection contact that is provided with at end face that is used for main electrode.
Background technology
In the surge voltage protector of prior art on the gap basis, described gap encapsulates setting in the low pressure range planted agent time spent, in order to avoid discharge the high temperature or the ionized gas of threatening environment.
In belonging to the discharger of prior art early, the overwhelming majority, the power conversion until about 90% all is discharged in the environment with the form of hot gas.Clearly, adopt modern gap to avoid discharging, this has improved heat load and dynamic load.In the discharger of encapsulation, the load of this raising hinders in as far as possible little physical dimension and carries out necessary control for high impulse electric current and high continuous electric current.
For being implemented in the lower safety level in some kilovolt range, be provided with additional trigger equipment in the discharger.Such trigger equipment requires that another is additional, loads the insulation of the electrode of high pressure usually.More consumption on structure space and additional insulating material also cause other restriction of the discharger power realized by this way.
By DE 100 08 764 A1 and the gap of the encapsulation of wherein showing known, trigger electromotive force via the metal shell cover input of gap.Be arranged on the main electrode mutually insulated at this place and be installed in the gap with respect to shell.Yet based on short arc length and and the simple distribution of the electric arc scheme by the prior art be merely able to the afterflow limit that reaches less.
In the discharger of the encapsulation of DE 100 18 012 A1, the electromotive force of trigger electrode is transferred by the withstand voltage metal shell of gap equally.The pressure casing one here constitutes and is that the purpose of making adopts simple forming technology in case of necessity.Yet the insulating sleeve of abandoning triggering electromotive force causes being used for the insulator of gap inside in this flexible program expense increases, because two electrodes not only must insulate each other, and insulate with respect to whole casing.Except requiring more space, the obstruction of the insulator of the proof voltage that also expended of the heat radiation of gap particularly, this causes the increase of insulating element heat load, long cooling time and the significantly restriction in the space that provides for gap.All these shortcomings finally limit the power of gap.
If carry out the additional discharging of self-produced gas for the special parameter that improves gap, will produce higher power conversion, this power conversion causes continuation rising or the dynamic pressure in pulse current and the continuous electric current to load except that heat load.
The gap that triggers of having showed an encapsulation in DE101 64 025 A1, this gap is worked according to Radax Flow principle.In the solution of the prior art, the shell of the existing rectangular parallelepiped-shaped of gap is used for cooling down high-temperature gas.Be transported to trigger electrode by second insulating part with the main electrode of casing insulation.Based on the geometry form of implementation of shell, the higher and position of greatly having limited effective electric arc scope with respect to the zone that is used as refrigerating gas of such flexible program cost.
Above-mentioned comparatively valuable scheme of the prior art includes the low-pressure air gap that bears thunder and lightning, and this gap has high resistance to pressure with its structure.
Introduced the gap of a smaller power in EP 0 305 077 A1, wherein, trigger electrode passes the shell of being made by insulating material of gap.This does not have the gap that bears thunder and lightning and has less main electrode distance, and does not have the measure that improves arc voltage.The power transfer of the gap in the prior art and thing followed heat load and dynamic load all are inadequate.Such gap is not suitable for dropping into low voltage electric network and uses.The dynamic load of the shell here and the sleeve pipe of trigger electrode are equally all very little.
Summary of the invention
As known from the above, the objective of the invention is to, realize that further improved, encapsulation, withstand voltage formation, non-gas-tight seal, basic structure is rotational symmetric duty spark gap, it has: two main electrodes that the space is oppositely arranged, the shell of a metal crimping, at least one trigger electrode, a discharge cavity and the preferred electrical connection contact that is provided with at end face that is used for main electrode, wherein gap should guarantee to utilize simple trigger electrode contacting ability to bear to high surge currents in simple technology controlled architecture.
Realize target of the present invention by the gap by the characteristics combination of claim 1, wherein dependent claims discloses structure and the further design that meets purpose at least.
In first kind of form of implementation of the present invention, the contacting of trigger electrode realizes by the present invention by means of insulated electric conductor or preferred tape conductor, described conductor the spatial interpolation of slit-shaped go into to the outside of one of them main electrode and main electrode is built-in and the affiliated side of centering body between.
The outside link of described conductor can touch in the zone of the end face connecting terminal of corresponding main electrode, and the end of removing insulated hull of the inside of described conductor is electrically connected with trigger electrode.
The tape conductor of described preferred use is positioned at the slit-shaped space and abuts in when moulding on the outline of main electrode, and based on this fact, any the groove or the analog of other in the built-in and centering body all is unnecessary in main electrode.Have less hardness and fixedly especially true during elasticity, enough mechanical stabilities and sealing in the tape conductor zone that considering coexists lays when compare the built-in and centering body of main electrode with the material of tape conductor or each main electrode.
In having the form of implementation of tape conductor, this tape conductor almost can at random be guided between the part of gap, does not just rely on the electromotive force of corresponding adjacent component.To consider all that under which kind of situation the anti-pulse feature of the insulation of this band will be higher than the pulse voltage of trigger impulse.
Connection between the end of removing insulated hull of trigger electrode and band can be by clamping, soldering, melting welding, the bonding realization.
The trigger electrode of described contacting is further processed after assembling with existing joint then, that is to say, by having the built-in and centering body of first main electrode that is in first electrode wherein, having the object of second electrode of trigger electrode and the stacked structure that second main electrode that is oppositely arranged with it forms.Surround the built-in and centering body of the main electrode of second main electrode and hold tape conductor.Metal shell forms crimping respectively in the end region of described total in connection, makes to form very withstand voltage and firm gap.
In second kind of form of implementation of gap, be the contacting of trigger electrode, one of main electrode embedded body and centering body insulation ground setting also has a hole of extending in the axial direction.
In described hole, have spring contacts, the contact of helical spring form for example, its medial end contacts with trigger electrode and its outer end is palp in the zone of the external contact of the end face of attaching troops to a unit.
Described hole of extending in the axial direction is at the regional inner sealing of end face external contact, make the assembling of described structure finish after described spring contacts and trigger electrode pretension or pretension be bearing on this electrode.
In the zone, outer end of described spring contacts, can arrange another, but hole radially, that intersect with first hole of extending in the axial direction.Can be electrically connected spring contacts by described second hole radially.
Here also have preferred possibility, promptly insert second spring contacts in another hole radially, this second spring contacts contacts first spring contacts with the one end on the intersection point in described two holes, is electrically connected to set up.
Described second spring contacts can be connected with external lug, and contacts with metal shell, by described shell to be trigger electrode conveying trigger voltage.
Description of drawings
Next further describe the present invention by embodiment with reference to accompanying drawing.
That Fig. 1 illustrates is encapsulation, withstand voltage formation, basic structure is the sectional view of rotational symmetric duty spark gap, and described gap has and is used for the tape conductor of contacting trigger electrode,
Fig. 2 illustrates the sectional view of basic structure for the duty spark gap of rotation symmetry formation, comprises and trigger electrode being electrically connected by spring contacts.
Embodiment
Described rotational symmetric basically duty spark gap by accompanying drawing has two main electrodes that are oppositely arranged 2 and 3.
The cross section of described main electrode 2,3 is T-shaped, and wherein the arm that extends in the axial direction of T shape has an external electric joint, for example with the form of screwed hole.
Built-in and centering body 4 and 5 is with main electrode 2 and 3 fixing with respect to shell 1 by main electrode, and described shell 1 preferably is made of metal.
Described trigger electrode 6 is fixed in its position with respect to shell 1 and two main electrodes 2 and 3 by an insulator 6a.
Described shell 1 has crimping at the end face circumference, gives the resistance to pressure of overall structure with necessity.
Press among the embodiment of Fig. 1 the built-in and centering body 5 insulation ground formations of main electrode.It has been up to trigger electrode 6 and be in contact with it between the necessary parts that the strip 8 of an anti-pulse voltage is introduced in for gap.
Connection necessary between the end of removing insulated hull of trigger electrode 6 and described ribbon conductor 8 can be by clamping, soldering, melting welding and bonding realization.
Described preferred employing be with 8 to have following advantage with respect to electric wire, based on 8 from one millimeter to some submillimeter less thickness, need be in the corresponding parts of gap, particularly process or be provided with groove especially in the built-in and centering body 5, do not produce additional requirement at technical elements like this in main electrode.
The band that embeds before built-in and centering body 5 inserts with respect to attached main electrode 3 in main electrode not the assembling (it constitutes stacked structure) to the gap element cause hell and high water.
By the described encapsulation of the embodiment of Fig. 2, rotational symmetric substantially duty spark gap has on the basic structure condition and the similar structure of gap described by Fig. 1.
Different with the form of implementation of pressing Fig. 1, now, a hole of extending in the axial direction is set in main electrode embedded body and centering body 5, first spring contacts 9 is admitted in this hole.
Aforementioned apertures upwards, just towards integrally-built end face sealing, based on this fact, described spring contacts can be under the state that assemble under the spring pretension, can realize the reliable contacting of trigger electrode 6 like this by the free end of spring contacts 9.
In pressing example shown in Figure 2, in main electrode 3, also constitute a through hole 12, its diameter is greater than the diameter of spring contacts 9, to avoid short circuit (having an insulating barrier if can not reinstall the insulating part or the described spring of an additional hollow cylindrical in the hole 12 at this place).
Certainly, also exist following may, promptly instead of holes 12 is provided with a notch shape groove in the horizontal arm of T shape main electrode 3,9 of spring contacts contact with trigger electrode 6 like this.
For following situation, the insulating element 6a that promptly is used for fixing trigger electrode 6 is not a hollow cylinder, and these parts also have corresponding through hole, makes spring contacts 9 form with the surface of trigger electrode 6 and is electrically connected.
Press the displaying of Fig. 2, another hole radially of design in the built-in and centering body 5 in main electrode, described radial hole intersects with the hole of extending in the axial direction.
Described another pore volume is radially received a contact, particularly second spring contacts 10, and this contact can be fixed in the built-in and centering body 5 of main electrode by clamping by opening 11.
Though hole of extending in the axial direction and employing spring contacts 9 by necessity form integrally-built certain asymmetry, yet assembly expenses is to improve with comparing by the form of implementation of Fig. 1 minimumly.Also not needing provides more space to the contacting of trigger electrode 6.
Press the design of the solution of the present invention of Fig. 2, second spring contacts 10 can be connected with metal shell 1, introduces trigger voltage to give trigger electrode 6 by this shell.
In a word, can import the triggering electromotive force in gap insulation ground that will encapsulate in the mode that simply, does not influence the assembling process, withstand voltage, non-gas-tight seal by the present invention.Another advantage of the present invention is that nearly all member or assembly can be applied to not having trigger or having the structure of trigger of gap, makes the expense that relates to the manufacturing of part and be used to store in a warehouse all obtain reduction.
List of numerals
1 metal shell
2,3 main electrodes
Built-in and the centering body of 4,5 main electrodes
6 trigger electrodes
6a is used for the insulator of trigger electrode
7 discharge cavities
8 tape conductors
9 first spring contacts
10 second spring contacts
11 openings
Hole in 12 main electrodes 3
Claims (6)
1. that encapsulate, withstand voltage formation, non-gas-tight seal, basic structure is rotational symmetric duty spark gap, it has: the main electrode that is oppositely arranged at two intervals, metal shell with end face crimping, at least one trigger electrode, discharge cavity and be used for main electrode preferably in the electrical connection contact that end face is provided with, and be used for main electrode relative fixed and the fixing built-in and centering body of main electrode of opposite shell; It is characterized in that, contacting for trigger electrode, one insulated conductor or a preferred tape conductor are arranged on the outside of one of main electrode and main electrode is built-in and the affiliated side of centering body between the slit-shaped space in, the outside link of wherein said conductor is palp in the zone of the connecting terminal of the end face of corresponding main electrode, and the end of removing insulated hull of the inboard of described conductor is electrically connected with trigger electrode.
2. that encapsulate, withstand voltage formation, non-gas-tight seal, basic structure is rotational symmetric duty spark gap, it has: the main electrode that is oppositely arranged at two intervals, metal shell with end face crimping, at least one trigger electrode, discharge cavity and be used for main electrode preferably in the electrical connection contact that end face is provided with, and be used for main electrode relative fixed and the fixing built-in and centering body of main electrode of opposite shell; It is characterized in that, contacting for trigger electrode, the insulation of one of built-in and centering body of described main electrode constitutes and has a hole of extending at axial direction, one spring contacts is arranged in described hole, and the medial end contact trigger electrode of described spring contacts and the outboard end of described spring contacts are palp in the zone of the external contact of the end face of attaching troops to a unit.
3. according to the described gap of claim 2, it is characterized in that described hole of extending at axial direction is sealed in the zone of the external contact of end face, make structure assemble the surperficial pretension of described spring contacts in back and trigger electrode like this.
4. according to claim 2 or 3 described gaps, it is characterized in that another hole radially, that intersect with first hole of extending at axial direction is formed in the spring contacts outer end region.
5. according to the described gap of claim 4, it is characterized in that, in described hole radially second spring contacts is set, described second spring contacts contacts first spring contacts with the one end and is electrically connected to form on the joining in described two holes.
6. according to the described gap of claim 5, it is characterized in that described second spring contacts is connected with described metal shell, to carry trigger voltage to trigger electrode by described second spring contacts.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006011014.5 | 2006-03-09 | ||
| DE102006011014 | 2006-03-09 | ||
| DE102006020129.9 | 2006-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101427432A true CN101427432A (en) | 2009-05-06 |
Family
ID=40616765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800145367A Pending CN101427432A (en) | 2006-03-09 | 2007-03-05 | Encapsulated, pressure-proof, non-hermetically sealed, rotationally symmetrical high-power spark gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101427432A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103636085A (en) * | 2011-04-13 | 2014-03-12 | 上海电科电器科技有限公司 | Element for producing triggered arc |
| CN104409967A (en) * | 2014-11-17 | 2015-03-11 | 广东立信防雷科技有限公司 | Three-pole discharge gap body and discharge trigger circuit |
-
2007
- 2007-03-05 CN CNA2007800145367A patent/CN101427432A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103636085A (en) * | 2011-04-13 | 2014-03-12 | 上海电科电器科技有限公司 | Element for producing triggered arc |
| CN103636085B (en) * | 2011-04-13 | 2016-08-03 | 上海电科电器科技有限公司 | Produce the element triggering electric arc |
| CN104409967A (en) * | 2014-11-17 | 2015-03-11 | 广东立信防雷科技有限公司 | Three-pole discharge gap body and discharge trigger circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101189770B (en) | Encapsulated, pressure-proof, rotationally symmetrical high-power spark gap | |
| KR101401059B1 (en) | High power discharge fuel ignitor | |
| US5990778A (en) | Current-limiting resistor having PTC behavior | |
| US20090009921A1 (en) | Overvoltage protection element | |
| CA2615011A1 (en) | Electric cartridge type heater | |
| CN101903965A (en) | Insulation of a current interrupter of the vacuum bulb type by overmoulding | |
| CN101779349A (en) | The device and the module that are used for anti-thunder and lightning and overvoltage protection | |
| CN101911408B (en) | Overvoltage diverter with low response surge voltage | |
| CA2418177A1 (en) | Improved electrical connector for aircraft fuel pumps | |
| US5892427A (en) | Current limiting high voltage fuse | |
| CN106194548A (en) | Corona ignition device | |
| JP2018514905A5 (en) | ||
| US20220136422A1 (en) | Electrical current feed-through | |
| KR20110069023A (en) | Spark plug and methods of construction thereof | |
| JP2003187944A (en) | Current peaking spark plug | |
| US5952910A (en) | Isolator device for arrester | |
| CN101427432A (en) | Encapsulated, pressure-proof, non-hermetically sealed, rotationally symmetrical high-power spark gap | |
| CA2279289C (en) | Encapsulated fuse with corona shield | |
| US4150353A (en) | Current limiting fuse | |
| US3308758A (en) | Ignition device | |
| JP2017527769A (en) | Glow pin plug | |
| CN101536276B (en) | Encapsulated, voltage-proof surge arrester capable of carrying lightning currents and having power-frequency follow-current quenching capability | |
| US4150419A (en) | Electrical capacitor with a fuse | |
| US3065436A (en) | Sheathed heating element | |
| CN1998117B (en) | Automatically-released over-voltage discharge device and its use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |