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How to detect failure problems nozzle

The role of the nozzle initially minor problem, and therefore is often overlooked. With the change of the throat, the gradual change of spray characteristics obvious and can be monitored.
Particle size: With the nozzle wear or corrosion, flow increases, the pressure drop, resulting in larger spray particles. This problem is usually finding out concept, but the results can be analyzed by the application.
Nozzle alignment: When a nozzle upload multiple fan nozzles, you need a complete uniform coverage, requiring all nozzles are accurately locate each other, that is, all of the fan-shaped spray pattern is accurate alignment to ensure accurate coverage area . All spray should be parallel to each other, and with the nozzle into the 5 ° - 10 ° angle. Otherwise the entire coverage will be uneven.

Flow: centrifugal, when the throat constant wear and tear, the nozzle under pressure, flow usually increases. Because of this increase in traffic is not easy concept found, it is recommended that regular flow detection. Flow rate detector can detect the flow meter readings or at a given pressure, with the collection of a certain period of time were collected to measure the amount of water. These readings and the readings on the comparison sample, or with the new, never used nozzle readings were compared. When using a reciprocating pump, throat wear constant flow of water, the liquid pressure drop in the pipeline.
Spray shape: fan nozzle throat damaged, blocked or bonding, the uneven spray pattern changes very easy outlook found. The throat gradually worn, spray shape change is not easy concept found until the flow increased significantly only when Outlook found. For applications requiring a very uniform spray coverage of applications require the use of special equipment or test to check the uniformity of the spray pattern.
Oval throat with a fan-shaped spray nozzle or tapered shape of the edge thickness of fan blade shape, and thus adjacent nozzles overlap distribution is satisfactory. With the throat wear, can be found in spray shape concept included angle decreasing. Then find more water flowing in the center, so that the water distribution increases. Can also be found in the spray bar shape, hollow.
Hollow cone nozzle - is basically a liquid ring, its uneven spray pattern is mainly manifested in certain areas was strip.
Solid cone, square or oval spray nozzles, which spray pattern the degree of unevenness of a fan nozzle, as more water is concentrated in the center. Solid internal vane nozzle clogging caused by spray shape change is not the law.
Spray pressure: pressure changes caused by the nozzle problem is difficult concept found. When using the pump, spray pressure remained unchanged, but the liquid flow rate is usually worn over the mouth of the nozzle throat increases. Increase in traffic would result in increased costs of spray liquid.
If a reciprocating pumps, flow is kept constant, the injection pressure with a nozzle and reduce wear or corrosion. Low pressure spray jet reduces the impact force. If the nozzles are clogged, the injection pressure increased, the system can exceed the maximum allowable pressure, causing equipment damage or personal injury.
Change is caused by the injection pressure spray coverage area changes.

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