Gas-filled discharge gap
View Patent ↗A gas-filled discharge gap includes at least two electrodes and an electrode-activation mass that is arranged on at least one of the electrodes. The electrode-activation mass contains K 2 WO 4 .
1. A gas-filled discharge gap comprising:
at least two electrodes; and
an electrode-activation mass arranged on at least one of the electrodes, wherein the electrode-activation mass comprises a base component of K 2 WO 4 , wherein the K 2 WO 4 is provided in a quantity between approximately 20 and 90 wt %.
2. The discharge gap according to claim 1 , wherein the discharge gap is realized in the form of a spark gap with two end electrodes arranged on end surfaces.
3. The discharge gap according to claim 1 , wherein the discharge gap is realized in the form of an overvoltage arrestor with two end electrodes arranged on end surfaces.
4. The discharge gap according to claim 1 , wherein the electrode-activation mass is arranged in a depression of at least one of the electrodes.
5. The discharge gap according to claim 1 , wherein the at least two electrodes comprise a first electrode and a second electrode, the discharge gap further comprising a cylindrical-shaped hollow body, wherein open end surfaces of the hollow body are closed by the first electrode and the second electrode.
6. The discharge gap according to claim 5 , wherein the hollow body and the first and second electrodes form a closed cavity that is filled with a noble gas.
7. The discharge gap according to claim 5 , wherein the electrode-activation mass is arranged on active surfaces of the first and second electrodes.
8. The discharge gap according to claim 7 , wherein the active surfaces include one or more depressions, the electrode-activation mass arranged in the one or more depressions.
9. The discharge gap according to claim 8 , wherein each of the first and second electrodes comprises a waffle-like structure for accommodating the electrode-activation mass.
10. The discharge gap according to claim 8 , wherein the active surface of each electrode comprises a plurality of depressions that do not intersect.
11. The discharge gap according to claim 1 , wherein the at least two electrodes comprise a first end electrode, a second end electrode and a center electrode, the discharge gap further comprising a hollow-cylindrical ceramic insulator arranged between the center electrode and one of the end electrodes.
12. The discharge gap according to claim 1 , wherein the K 2 WO 4 is provided in a quantity between approximately 30 and 60 wt %.
13. A gas-filled discharge gap comprising:
a first end electrode;
a second end electrode;
a center electrode; and
an electrode-activation mass arranged on the center electrode, wherein the electrode-activation mass contains K 2 WO 4 , wherein the K 2 WO 4 is provided in a quantity between approximately 20 and 90 wt %.
14. The discharge gap according to claim 13 , wherein the electrode-activation mass is further arranged on each of the first and second end electrodes.
15. The discharge gap according to claim 13 , wherein the center electrode includes a peripheral groove for accommodating the electrode-activation mass.
16. The discharge gap according to claim 13 , wherein the electrode-activation mass further contains a metal oxide, a metallic component, or a halide.
17. The discharge gap according to claim 13 , further comprising a hollow-cylindrical ceramic insulator arranged between the center electrode and the first end electrode.