Vintage arc xenon tube DKSTV-6000 48 cm long 220000 lm NOS

Description: water-cooled lamp for illumination of open spaces, as well as for illumination as a means of ventilation in technological installations. DIMENSIONS:Length: 480 mmMaximum color temperature 6000 KPressure 6000 WManufacturer: LismaReflector: НіBase PK32D-2Light flow 220000 lmDry lighting To brighten open spacesWorking position s30/h30 Some info from internet(links to last photos): 1 - outer glass tube; 2 — discharge quartz tube; 3 — electrode; 4 - pipe for cooling water Xenon arc tube lamps belong to the group of high-pressure gas-discharge lamps, in which current stabilization can be carried out without the help of a ballast resistor. This is explained by the fact that in such lamps the discharge occurs in plasma and is of a quasi-stationary saturated nature, in which the current density is almost independent of the degree of ionization of the gas, since an increase in the number of electrons leads to a proportional decrease in their free path. The corresponding geometric dimensions of the plasma column and its almost constant specific resistance ensure the constancy of the ohmic resistance of the saturated discharge. Figure 9.11 shows the design of a water-cooled DKsTV 6000 xenon tubular lamp. The lamp has a discharge tube 2 made of quartz with two electrodes 3 made of thoriated tungsten. The lamp inputs are made of molybdenum foil. The discharge tube is filled with xenon at a pressure of 0.05 MPa. The discharge tube is located coaxially with a glass cylinder /, forming a cavity for the circulation of cooling water. Water washes the discharge tube in a helical manner due to the displacement of the axes of the nozzles 4 relative to the plane passing through the axis of the lamp. Cooling water flow rate is 5 l/min at an initial temperature of 5°C and an outlet temperature of 40°C. For cooling, distilled water is used in a closed cycle (Fig. 9.12). The cooling system includes the following elements: tank B for cooling water, pump I, which provides the required water flow, filter F, which purifies the water from mechanical impurities, bypass valve K, for regulating the water pressure in the system, heat exchanger G for cooling the water leaving the lamps. Tap water can also be used for cooling, but this leads to rapid contamination of the surface of the tubes and reduces the effective output of the lamp. The frequent cleaning required in this case with disassembly and reassembly of water supply units leads to premature failure of the lamp due to breakage of its glass parts. In addition to water-cooled lamps, the domestic industry produces DK'sT xenon lamps with natural air cooling. The lamps are simple in design and easy to use. They are a quartz tube of certain dimensions, depending on the power of the lamp, at the ends of which electrodes are mounted - inside the tube and electrical inputs - outside it. Electrical inputs are made either in the form of contact pins or in the form of flexible stranded copper bundles equipped with a lug for connecting the lamp to the network using a three-bolt connection. The second input option, as the operation of the lamps has shown, is more reliable. Rice. 9.12. Basic simplified diagram of the starting device and cooling system of the DKsTV 6000 lamp. Xenon lamps do not require ballast resistance, but an igniter is required to ignite them. A simplified diagram of one of the options for the ignition device is shown in Figure 9.12. When the short-circuit button of the ignition transformer 3 is turned on, capacitor C1 is charged from the secondary winding of the 3 to the breakdown voltage of the spark gap R. When a breakdown occurs, capacitor C1 is discharged through part of the winding of the pulse transformer TI, a high-voltage ignition pulse is supplied to the lamp electrodes, causing breakdown and ionization of the interelectrode space of the lamp. Further development and maintenance of the discharge in the lamp occurs due to the mains voltage, Note. DKsTL 5000 lamps are connected in pairs in series to a 220 V network. Some time after the lamp is ignited, the winding of the pulse transformer is shunted by switch B, and the igniter can be turned off and used to ignite the next lamp. Capacitors C2 and SZ serve to protect the network from interference that occurs during lamp operation. Technical data for some types of high-pressure xenon lamps are given in Table 9.3. The distribution of the spectral radiation density of the DKsTV 6000 lamp is shown in Figure 9.13 (inset). The radiation of xenon lamps in the visible part of the spectrum is very close to natural solar radiation, but one cannot fail to note the excess of infrared and ultraviolet radiation from the lamps. DKsT lamps, whose quartz tube is transparent to short-wave radiation, are distinguished by especially powerful ultraviolet radiation. It should be borne in mind that when the illumination is more than 150 lux, the UV irradiation created by them is excessive and can cause a painful reaction in people who stay in this area for a long time. For the DKsTV lamp, the role of a filter that cuts off UV radiation is played by the glass of the outer tube, and the bulbs of the DKsTL lamp are made of quartz glass with doping additives that ensure transmission of radiation only with a wavelength of more than 300 nm. Xenon arc lamps have the highest unit power and luminous flux of all light sources and a favorable spectral composition of the visible part of the radiation. These qualities allow them to be used in lighting installations for large spaces and in irradiation installations for growing plants.

Price: 80 USD

Location: Vinnitsa

End Time: 2024-12-27T19:45:07.000Z

Shipping Cost: 33 USD