44results about How to "Not prone to drift" patented technology

The invention relates to a high-efficiency slurry bed reactor, which belongs to the field of chemical machinery. It mainly consists of a solid-liquid separator, a variable-diameter inner sleeve, a reactor jacket, a heat exchanger with internal components, a gas riser with nozzles, an inner sleeve with heating and gas distribution functions, anti-blocking nozzles, nozzle mounting plates, Heat exchanger, heating coil outlet, secondary distribution plate, heating coil, etc. The beneficial effects of the present invention are that the distributor of the reactor is not easily blocked, the gas-liquid mixing is uniform, the gas-solid contact is sufficient, the reaction efficiency is high, the carrying amount of the catalyst and the solvent is small, the bias flow, channel flow and dead bed are not easy to occur, and the slurry flow rate Fast, the viscosity of the slurry in the reactor is basically the same, and the heat of reaction can be removed in time, especially in the stage of catalyst reduction and temperature rise, it is easy to realize the stable operation of the reactor. In addition, the distribution of the feed gas in the reactor along the axial direction is basically the same as the concentration of the catalyst. The catalyst can maximize its reactivity, and the space of the reactor can be fully utilized.

The invention discloses a construction method of a cast-in-situ hollow floorslab and an airbag-type core framework thereof. The airbag-type core framework comprises an airbag cover and a protecting layer sleeving outside; the airbag cover comprises a bottom surface, a top surface, side surfaces and transition slopes; mutually pulling pieces used for mutually pulling of the bottom surface and the top surface are arranged in the airbag cover, side mutually pulling parts are arranged on the side surfaces, and slope pulling pieces are arranged in places, located in the airbag cover, in the transition slopes. The construction method includes building of framework, mounting of anti-floating pieces, laying of lower steel bars, mounting of lower supporting and fixing pieces, laying of the inflatable airbag mandrel, mounting of upper supporting and fixing pieces, laying of upper layer steel bars and casting of concrete. The top surface and the bottom surface of the airbag-type core framework can become curved surfaces under the action of air pressure, use amount of concrete can be decreased, cost can be reduced, weight of the hollow floorslab can be reduced, quality of the upper surface and the lower surface of the hollow floorslab can be improved, the core framework can be chamfered, and a guiding function upon the concrete can be achieved; the airbag-type core framework can be prevented from being wrapped after being fixed.

The invention relates to a petroleum drilling-production machine capable of filtering crude oil associated gas. The petroleum drilling-production machine capable of filtering crude oil associated gascomprises a supporting frame, a sprinkler head and a screw rod, wherein the top of the supporting frame is provided with a connecting frame, the top end of the connecting frame is provided with a linkage plate, the inner wall of the linkage plate is movably provided with a connecting shaft, the outer side of the connecting shaft is provided with a roller, the inner side of the outer wall of the roller is provided with a fixing groove, a steel cable is movably arranged in the fixing groove, one end of the steel cable is connected with a box body, and a cylinder is installed at the bottom of thebox body. The petroleum drilling-production machine has the advantages that by arranging a filter screen, an inner wall layer, a chamber and the cylinder, and the filter screen is inlaid on the outerwall of the inner wall layer in a mesh-like structure way, when the device executes petroleum drilling-production work, associated gas in the crude oil can be filtered under the effect of the filterscreen on the outer side of the inner wall layer and enters the chamber, and it is ensured that outwards delivered soil is difficultly enters the inner side of the chamber during drilling-production operation of the device.

The invention relates to a composite volume pulse wave signal collecting and processing fingerstall which comprises a first unit and a second unit capable of being communicated with the first unit. The first unit comprises an upper shell, a control circuit unit, a sliding base and a spring contact. The second unit comprises a spring wafer, a base, a silica gel strip, a sensor and non-woven fabric. The control circuit unit is arranged in the upper shell, and first sliding rails are arranged on the two opposite side faces of the periphery of the sliding base. Second sliding grooves are formed in the inner sides of the two side faces of the base, and the silica gel strip is fixed to the finger through the non-woven fabric. The sliding base of the first unit can be connected with the base of the second unit through cooperation of the first sliding rails and the second sliding grooves. The overall structural design is ingenious and reasonable, the sensor and the finger are combined tightly, firmly and constantly, use is more convenient, no wire is needed, measurement accuracy and stability can be improved, certain components can be abandoned as consumables when damaged, normal use of other components is not influenced, cost is reduced, and resources are saved.