37results about How to "Guaranteed settlement" patented technology

The invention discloses a biomass gasification extract liquid cooling device. The biomass gasification extract liquid cooling device comprises cooling pipes and a cooling fan. Each cooling pipe comprises a motor, an outer pipe with fins, a middle threaded rod, a threaded push plate for cleaning tar, a bearing, a fixed end socket and the like, wherein the threaded push plate is matched with the middle threaded rod through a screw pair; and the motor rotates to drive the cleaning plate to axially move so as to periodically clean tar accumulated in the pipe and guarantee the heat exchange effect. The cooling fan is arranged below the cooling pipes. Heat of the cooling pipes is taken away through air blasting, and accordingly extract liquid is cooled. By adopting the biomass gasification extract liquid cooling device, the problem that the heat exchange effect is reduced through a traditional indirect cooling method due to tar accumulated in pipelines is solved; and the environmental protection problem that VOC generated in the air by a direct cooling tower exceeds the standard is solved as well.

The invention discloses a construction method for controlling settlement convergence of a shallow buried loess tunnel with a high water level. The construction method includes the following steps that(1) precipitation of a precipitation well is achieved; (2) the reserved deformation amount is determined; (3) the step height is determined; (4) upper step excavation and preliminary bracing are achieved; (5) an upper step false stull is applied; (6) one sides of middle steps are excavated, and preliminary bracing is achieved; (7) a middle step false stull is applied; (8) one sides of lower stepsare excavated, and preliminary bracing is achieved; (9) primary support closed-loop construction is achieved; (10) secondary lining invert arch pouring is achieved; and (11) pouring of secondary lining arch wall is achieved. According to the method, design is reasonable, economic and social benefits are obvious, energy saving and environmental protection can meet the standard requirements, the technology reaches the advanced level in China, the method is used for quick installation construction of large-span, cross-railway transit T-shaped steel box girders, and the good application and promotion value is achieved.

The invention discloses a particle bed filter and dust removal device, which comprises an outer shell, the top of which is provided with a dust-containing gas inlet, the bottom is provided with a dust discharge port, and the inside is provided with at least two layers of particle bed filters along the vertical direction. There is a back blowing gas settling chamber, the gap between the inner wall of the outer shell and the outer periphery of the particle bed filter is used as the air flow chamber, the back blowing gas settling chamber runs through at least two layers of particle bed filters from the lowest layer, the back blowing gas settling chamber and the The dust outlet is connected, and the particle bed filter that is not penetrated by the back blowing gas settling chamber includes at least one filter unit, and the particle bed filter that is penetrated by the back blowing gas settling chamber includes at least two filter units and is distributed in the back blowing gas settling chamber On both sides of the airflow chamber, the blowback gas settling chamber is connected with the dust-laden gas vent, and the dust-laden gas vent is provided in the blowback gas settling chamber with a first inertial separator at an angle of 10° to 45° from the vertical direction. Deflector; the advantage is that it can make the blowback air flow downward, effectively ensuring the dust to settle and discharge.

The invention discloses an ultra-long shallow-buried excavation construction method for an existing pipeline in a complex environment. The method includes the following steps of firstly, arranging multiple top pipe curtains at the top elevation position of an underground passageway arranged along the portion below the pipeline of a road in a penetrating mode; secondly, arranging multiple side portion pipe curtains at the positions of the two side walls of the underground passageway within the height range of the underground passageway; thirdly, conducting soil body grouting in the internal area defined by the top pipe curtains and the side portion pipe curtains of the underground passageway; fourthly, pouring concrete on the wall face of the passageway after the internal area defined by the top pipe curtains and the side portion pipe curtains of the underground passageway is divided into a first guide hole, a second guide hole and a third guide hole for excavation and waterproofing is conducted on the side walls and the top wall. By means of the method, it is ensured that the whole construction process is conducted under the condition that safety is monitored.

The invention discloses an engine cooling system with a sand trap. The engine cooling system comprises a cylinder body water jacket, a cylinder cover water jacket and a water pump. The cylinder body water jacket and the cylinder cover water jacket are connected. A water outlet of the cylinder cover water jacket is connected with a water inlet of a radiator through a thermostat. A water outlet of the radiator is connected with the cylinder body water jacket through a water pump. The sand trap is arranged between a pipeline between the water outlet of the cylinder cover water jacket and the water inlet of the thermostat. The upper end of the sand trap is communicated with the pipeline. When cooling liquid enters the pipeline, the cooling liquid containing cylinder cover type sand granule impurities enters the thermostat after passing through the sand trap, and vortex produced through the sand trap enables the cylinder cover type sand granule impurities in the cooling liquid to be deposited at the bottom of the sand trap; then, when an engine is maintained, the bottom of the sand trap is detached to be cleaned, and after cleaning is finished, the bottom of the sand trap is installed, and cooling liquid is added into the engine. The engine cooling system is low in energy consumption, easy and convenient to disassemble and maintain, simple in structure, low in cost and easy to maintain.

The invention discloses a COB (Chip On Board) light source and a preparation process thereof. The COB light source is characterized by comprising a heat dissipation substrate (1), wherein a plurality of LED (Light Emitting Diode) chips (2) are arranged on the heat dissipation substrate (1), a circle of enclosure (3) is arranged outside the plurality of LED chips (2), and the enclosure (3) is connected with the upper surface of the heat dissipation substrate (1); an electrode (7) is arranged inside the enclosure (3); the LED chips (2) are connected with the electrode (7) by a gold thread (8); a hemispherical cured silica gel (6) is wrapped outside the LED chips (2); and a layer of fluorescent powder (5) is uniformly deposited outside the hemispherical cured silica gel (6). According to the COB light source and the preparation process thereof, the fluorescent powder around the LED chips is distributed uniformly, so the light distribution in each direction is uniform; the process is simple, the cost is low, the emission angle is large, the lighting effect is high, the color temperature consistency of the light source is good, and the product quality consistency is good.