7results about How to "Portfolio diversification" patented technology

The application belongs to the technical field of petroleum drilling equipment, and discloses a combined blowout preventer pressure testing device and a use method. The combined blowout preventer pressure testing device comprises a pressure testing blind plate guide shoe and a pressure testing blind plate simulated drill string. The pressure testing blind plate guide shoe comprises an automatic guide mechanism, a centering mechanism, a pressure testing blind plate, a connecting groove, a water pressure interface, a pressure relief port and a sealing steel ring groove. The automatic guide mechanism is fixed to the top of the centering mechanism. The centering mechanism is located at the top of the pressure testing blind plate. The connecting groove is arranged at the center of the automatic guide mechanism and the centering mechanism. The lower end of the pressure testing blind plate simulated drill string is detachably arranged in the connecting groove. The water pressure interface and the pressure relief port are arranged in the centering mechanism and the pressure testing blind plate. The sealing steel ring groove is arranged on the upper end surface of the pressure testing blind plate. The combined blowout preventer pressure testing device is stable and reliable, can cover all specifications of blowout preventers, is convenient and fast to operate, saves time and effort, has high dismounting and mounting efficiency, and has small operation risk.

The utility model provides an auxiliary construction device of a concave-convex concrete pavement for an automobile detection line, which comprises a pavement processing part, an auxiliary part and a control part, a main body frame comprises a base, rollers, a support plate, a U-shaped carrier plate and a transfer carrier plate, and a transfer mechanism comprises a transverse transfer structure and a longitudinal transfer structure. The cleaning mechanism comprises a cleaning structure and a water circulation structure, the loading mechanism comprises a servo motor, an electric telescopic rod, a clamping jaw motor and an electric roll shaft, and the storage mechanism comprises a waterproof base plate. Compared with a traditional concave-convex pavement manufacturing mode, the manufacturing period is remarkably shortened; the mold reutilization rate is improved, and the pavement manufacturing cost is reduced; the workload of the emptying or stacking step is obviously reduced, and the consumed time is greatly shortened; the cost is low and no mechanical fault exists; maintenance steps are simplified, materials such as concrete are adopted for repair, and maintenance difficulty is low. The mold is diversified in combination and can meet the construction requirements of various test pavements.

This invention discloses a test system based on the transmission module of an onboard transponder for high-speed trains in the field of railway communication technology. The system includes an electronic tag installed on the high-speed train for storing train information; a receiving unit comprising an onboard BTM antenna for receiving radiated signals emitted by the train during operation and recording the magnetic field energy of the radiated signals; a locomotive identification unit for automatic identification of the train; a BTM electromagnetic interference source location unit for calculating the location of interference sources on the train based on the magnetic field energy received by the receiving unit and Biosava's law; and a data terminal for receiving, storing, and querying test data of the interference sources. This invention utilizes the magnetic field energy received by the BTM antenna and Biosava's law to locate the interference source with only one train run, reducing energy, time, and manpower consumption required for train runs and saving investigation costs.

The utility model relates to valve body shell technical field, concretely is a stamping, stretch forming split type welding assembly's valve body shell, including water inlet flange, water outlet flan, the water inlet flange and water outlet flan all include the annular groove flange, circular flange body and the outer turning ring circular flange of being provided with three kinds of flange form of circular notch, flat mouth and outer turning, and the annular groove flange, circular flange body and outer turning ring circular flan all are divided into two kinds of standard form of circular flange and circular flange with notch, the utility model has the advantages of multi-component combination welding, through the welding connection mode of many flanges makes the valve body shell more suitable, welding firm easy to assemble, production process and process are more environmental protection and do not have the advantages such as pollution discharge, solve the connecting drawbacks of existing water valve, matching and the limitation lead to in the installation process, and the problem of complicated production procedure and pollution emission in casting and forging process.

The utility model relates to the technical field of in-vehicle atmosphere lamps, and discloses a double-lamp hollow projection handrail and door plank, which comprises a handrail seat, a back plate and a mounting part, a first handle space is arranged between the handrail seat and the back plate, a second handle space is arranged among the handrail seat, the back plate and the mounting part, a first atmosphere lamp assembly is connected in the first handle space, and a second atmosphere lamp assembly is connected in the second handle space. And a second atmosphere lamp assembly is connected in the second handle space. The utility model solves the problems in the prior art that the irradiation range of an atmosphere lamp is limited when the atmosphere lamp is arranged in the handle space, and the effect of improving the atmosphere feeling of the car door position is limited.

The application discloses a semiconductor processing equipment and a wafer conveying platform thereof. The wafer conveying platform comprises a platform body, a mechanical hand for wafer grabbing arranged on the platform body, at least one extension cavity, the extension cavity being detachably installed on the platform body through a connecting piece and located on the side of the platform body, the extension cavity and the platform body constituting a platform area, and a reaction cavity group, the reaction cavity group being multiple groups and each reaction cavity group being arranged on the outer periphery of the platform area. When a certain or some reaction cavities are out of order, other reaction cavities arranged in parallel with the certain or some reaction cavities can be selected to complete work without stopping, so that the wafer processing efficiency is improved and the equipment maintenance cost is reduced.

This utility model relates to the field of water sample collection technology, and discloses a membrane-type passive sampler for pathogen enrichment in domestic sewage. It includes: a shell, a pressure cap that mates with the shell, and a separator disposed inside the shell; the separator divides the interior of the shell into at least two independent receiving cavities, each containing a detachable adsorption module for pathogen enrichment. The capsule-type adsorption module allows for convenient replacement and diverse combinations of adsorption materials. One sampler can collect one or two different pathogens, or perform parallel sample collection, greatly improving sampling efficiency and data reliability. Simultaneously, the internal structure of the sampler's shell and the separator ensure the independence and loading stability of the samples, avoiding cross-contamination.