7results about How to "Ensuring Safety and Reliability" patented technology

The utility model relates to valve technical field especially is a kind of valve mounting structure with positioning function, including valve main body, flange mechanism is arranged on the valve main body and is used for installing positioning, flange mechanism includes: positioning assembly is fixed in the flange seat of the import and export end of valve main body, annular plate is rotatably installed in the inside of flange seat, the extension ear is fixed on the outer wall upper end of annular plate, the inside of annular plate is opened and is equipped with several arc grooves of circumferential distribution, the slider is slidably installed in the inside of arc groove, the flange plate is fixed in the outside of flange seat, the inside of flange plate is opened and is equipped with several circumferential distribution sliding slot, the sliding strip is slidably installed in the inside of sliding slot, and the sliding strip inner end is rotatably connected with slider, and the sliding strip outer end is fixed with bolt head;By automatic control bolt head radial adjustment, it can adapt to the flange connecting surface of different specifications within certain range, realizes fast accurate alignment with pipeline flange, improves installation efficiency.

The invention discloses an online monitoring method and system for the state of a roller screw control rod driving mechanism and a medium. Relates to the technical field of online monitoring. The method is improved on the basis of a traditional control rod driving mechanism state monitoring technology, and for a roller lead screw type control rod driving mechanism, a first effective value signal and a second effective value signal are calculated based on an acceleration signal; the time points of action starting and action ending of the roller lead screw type control rod driving mechanism are determined, action time periods with the action time reaching the standard are screened out for feature discrimination, and finally the state of the roller lead screw type control rod driving mechanism is obtained by combining all feature discrimination results. The problem that the state of the roller lead screw type control rod driving mechanism cannot be monitored on line is solved, the early failure of the roller lead screw type control rod driving mechanism is found in advance, and the safety and reliability of the control rod driving mechanism are powerfully guaranteed.

The utility model provides a kind of double-mode multi-view angle's vehicle bottom safety inspection device, comprising: fixedly installed in the central main module (1) of preset vehicle scanning area, the first camera (105) included in the main module (1) is perpendicular to the plane of target to be scanned, for capturing the panoramic image of vehicle chassis main body area;Additional module (2) is equipped on the both sides of the main module (1), the second camera (22) included in the additional module (2) forms preset angle with the plane of target to be scanned, for capturing vehicle chassis oblique view angle image.

The utility model discloses a multi-level multi-topology series-parallel offshore wind power transmission system, which adopts a symmetrical single-pole power transmission scheme, a converter adopts a converter valve based on modular multi-level, and a medium-voltage direct-current power transmission main system is used for meeting remote electric energy transmission of various functional requirements. A symmetric bipolar power transmission system is adopted, and a converter valve based on the cascade three-level technology is adopted as a converter. By the adoption of the power transmission system, electric energy can be obtained from the alternating current side of the offshore wind power high-voltage direct current power transmission system 100 km away from the shore or above, then the medium-voltage direct current power transmission system is adopted, the power transmission system can be used for solving the problem that the power consumption load is 150 km away from the shore or above, high reliability and economical efficiency are achieved, and the power transmission system has important significance on multi-scene multifunctional development of the open sea.

The utility model discloses a unilaterally-fixed metal roof sliding support connecting node, which is positioned at the joint of vertical plate ribs of two adjacent metal roof plates and comprises a metal connecting base and a support connecting piece, and the support connecting piece is connected with the metal connecting base and can slide relative to the metal connecting base. The metal connecting base is provided with a flat plate area and an edge sliding groove area, the edge sliding groove area is provided with a sliding groove, the top of the sliding groove is provided with an opening groove, the sliding groove is connected with a support connecting piece, the flat plate area, located on one side of the sliding groove, of the metal connecting base is provided with a screw connecting hole, and the lower portion of the metal connecting base is provided with a plastic cushion block. And the metal connecting base and the plastic cushion block are fixed on the roof purline through screws. According to the utility model, a single-side connection fixing mode is adopted, so that the quality control precision of the roof support is improved, the mounting efficiency of the roof support is greatly improved, the construction period is saved for the construction of a metal roof, and the cost is reduced.

The application provides a deepwater plug-in mistake-proof buckle water-proof casing thread joint device, which comprises a plug-in male joint and a lead-in female joint. The plug-in male joint is sequentially provided with a plug-in nose end and a female thread flank from a plug-in end to a tail. The plug-in nose end and the female thread flank are step positioning structures. The lead-in female joint is internally provided with a lead-in groove. The lead-in groove is matched with the plug-in nose end. A male thread flank is arranged on the sidewall from the lead-in groove to the inner wall tail end of the lead-in female joint. The male thread flank is correspondingly arranged with the female thread flank. The application has the beneficial effects that: the plug-in pre-connection structure can simplify the deepwater water-proof casing buckling operation process, effectively reduce the adverse effects of environmental shaking on normal buckling operation, and improve the overall operation efficiency. Meanwhile, the double-layer sealing protection formed by the stop ring and the fluorine rubber O-shaped sealing ring enables the joint to have stable high dynamic sealing performance and meet the sealing requirements under the deepwater high pressure working condition.

A battery cell according to an embodiment of the present disclosure includes: a case configured to accommodate an electrode assembly in an accommodation space provided between a first case part and a second case part facing each other; and an electrode lead having one end connected to the electrode assembly and the other end extending to the outside of the case, and the case includes: a sealing portion provided by bonding an edge of the first case part and an edge of the second case part to each other so as to seal the accommodation space; and a venting portion provided in a portion of the case, excluding an edge portion where the sealing portion is provided.