41results about How to "Eliminate buildup" patented technology

Methods and devices for negating scale buildups on interior surfaces of a sliding sleeve valve housing above the flow tube. In some aspects, a wiper member provides additional clearance between the flow tube and housing to compensate for scale buildup. In other aspects, the interior surface of the valve housing is provided with a sleeve that is disposed between the interior surface of the valve housing and the general flowbore passing through the valve housing to protect the interior surface against scale buildup.

An interconnect structure that may reduce or eliminate stress induced voids is provided. In an embodiment, a via is formed below a conductive line to provide an electrical connection to an underlying conductive region. The conductive line includes a widened region above the via. The widened region serves to reduce or eliminate stress induced voids between the via and the underlying conductive region. In another embodiment, one or more redundant lines are formed extending from a conductive region, such as a contact pad, such that the redundant line does not electrically couple the conductive region to an underlying conductive region. In a preferred embodiment, the redundant lines extend from a conductive region on a side adjacent to a side having a conductive line coupled to a via.

The invention discloses an intelligent system for preventing boiler bottom combustible gas from detonating and a method. The system comprises a hot air conveying and distributing subsystem, a boiler bottom atmosphere measuring subsystem and a control system; the hot air conveying and distributing subsystem conveys hot air taken from a primary hot air mother tube and a secondary hot air tank to spray ports in slopes of a dry bottom hopper at the boiler bottom; the boiler bottom atmosphere measuring subsystem is arranged at the boiler bottom and is used for sampling boiler ash and smoke and measuring the accumulation concentration of the boiler bottom combustible gas; the control system is used for controlling all hot air control baffles of the hot air conveying and distributing subsystem according to the combustible gas concentration measured by a measuring device and the boiler operation state and eliminating the accumulated combustible gas until the combustible gas concentration of each measuring point is lower than a set value, and the boiler bottom combustible gas is prevented from detonating. With the system and the method, accumulation of the boiler bottom combustible gas is eliminated in a fixed-point manner, the boiler bottom combustible gas is effectively prevented from detonating, and no negative effects are caused to the combustion condition in the boiler and the economic efficiency of boiler operation.

This invention relates to a climate hall 100 comprising a foundation 102 to which a flexible wall arrangement 400 is connected. The flexible wall arrangement 400 extends along and is sealingly joined to the foundation 102. The climate hall 100 further comprises a ventilation plant 103. The ventilation plant 103 is configured to establish an overpressure inside the flexible wall arrangement 400, thereby causing the flexible wall arrangement 400 to erect to form a hall having an inner volume which is at least partly defined by inner side wall portions 408 and a ceiling portion 401 formed by said flexible wall arrangement 400. The ventilation plant 103 is further configured to established a controlled climate inside the hall, thereby forming a climate hall 100. The climate hall 100 further comprises an interior ground surface 200 configured for vehicle testing.

A lubricant formulation which is effective to remove or prevent carbon deposits in internal combustion engines has a solvency as defined by aniline point from about 20 to about 115, a volatility (as measured by NOACK) of less than 15%, an oxidative stability (as measured by PDSC) of above 40 minutes and a base oil viscosity of above 2 and below 10 cSt. The lubricant formulation can be formed from a blend of Group III, IV and V lubricants, in particularly polyalphaolefins, alkylated naphthalenes and polar Group V base stocks such as polyol esters. The carbon deposits can be removed from the engine piston by simply running the engine with the lubricant for one required cycle, or can be used continuously in the engine to prevent buildup.