High-voltage thyristor equipment

Claim 2

Thyristor equipment comprising a hollow annular receptacle for a coolant fluid, a plurality of tubular ducts equidistantly spaced from one another around the receptacle and upstanding therefrom in a cylindrical configuration, and a plurality of thyristors and associated circuitry mounted along the length of each duct which is arranged to conduct fluid from the receptacle, the thyristors being so arranged relatively to one another as to define a helical path encircling all the said ducts.

Claim 3

Thyristor equipment according to claim 1, comprising a sealed tubular enveloping housing, and a trough at the base of the housing adjacent the annular receptacle, the coolant fluid being caused to issue from the top of the ducts within the housing and thence flow downwardly into said trough.

Claim 4

Thyristor equipment according to claim 2, comprising a heat exchanger in the flow circuit of said coolant, and a pump for continuously pumping the fluid around this circuit.

Claim 5

Thyristor equipment according to claim 3, wherein the thyristors are so arranged as to define a plurality of separate helical paths interspersed and coextensive with one another.

Claim 6

Thyristor equipment according to claim 4, comprising corona shields connected to the thyristors and disposed between these thyristors and the inner surface of the housing.

Claim 7

Thyristor equipment according to claim 5, wherein the circuitry associated with the thyristors is principally located on the outer side of the ducts, together with the thyristors.

Claim 8

Thyristor equipment according to claim 5, comprising bundles of fiber optics extending along the ducts, the thyristors being light-fired by signals transmitted through these bundles.

Claim 9

Thyristor equipment according to claim 7, comprising a mixer block from which the fiber optic bundles extend, the mixer being operative to provide a uniform distribution of light amongst these bundles from primary light guides transmitting light thereto from a source external to the equipment.

Claim 10

Thyristor equipment comprising a hollow annular receptacle for a coolant fluid, a plurality of tubular ducts equidistantly spaced from one another around the receptacle and upstanding therefrom in cylindrical configuration, a trough adjacent the said receptacle, a sealed tubular enveloping housing, a pump for pumping the fluid through the ducts whereby it issues through the top of the ducts and thence flows downwardly into the said trough, a plurality of thyristors and associated circuitry mounted along the length of each duct, the thyristors being so arranged relatively to one another as to define a helical path encircling all the ducts, and bundles of fiber optics extending along the ducts whereby to transmit light-firing signals to said thyristors.

Claim 11

Thyristor equipment comprising a hollow annular receptacle for a coolant fluid, a plurality of tubular ducts equidistantly spaced from one another around the receptacle and upstanding therefrom in cylindrical configuration, a trough adjacent the said receptacle, a sealed tubular enveloping housing, a pump for pumping the fluid through the ducts whereby it issues through the top of the ducts and thence flows downwardly into the said trough, a plurality of thyristors and associated circuitry mounted along the length of each duct, the thyristors being so arranged relatively to one another as to define a helical path encircling all the ducts, and bundles of fiber optics extending along the ducts whereby to transmit light-firing signals to said thyristors.

Claim 12

Thyristor equipment according to claim 9, wherein the circuitry associated with the thyristors is principally located on the outer side of the ducts, together with the thyristors, said equipment further comprising corona shields connected to the thyristors and disposed between these thyristors and the inner surface of the housing.