6results about How to "Improve connection quality" patented technology

The utility model provides a connecting line crimping contact pin structure, the connecting line crimping contact pin structure comprises a connecting material belt and a plurality of crimping contact pins, the connecting material belt and the crimping contact pins are integrally formed through punching, the connecting material belt is provided with a positioning through hole, one side surface of the connecting material belt is convexly provided with a positioning bulge, and the positioning bulge is used for limiting the connecting material belt; the plurality of crimping contact pins are arranged at the extending end part in the width direction of the connecting material belt at intervals, each crimping contact pin is provided with a line connecting groove, one end, adjacent to the connecting material belt, of each crimping contact pin is provided with an inclined plane cutting groove, and the connecting material belt is convexly provided with an inclined plane supporting block which is adaptively embedded into the inclined plane cutting groove. The positioning through holes and the positioning protrusions on the connecting material belt are subjected to dual positioning in installed crimping equipment, so that the installation positions of the multiple crimping contact pins on the connecting material belt are accurate; and the connecting material belt is bent towards one side deviating from the inclined plane cutting groove, so that the crimping contact pins are quickly disconnected from the connecting material belt, and the production efficiency of connection of the plurality of crimping contact pins and the connecting wire is improved.

The utility model provides a kind of exempt from formwork piece prefabricated comprehensive pipe gallery structure, including along longitudinal piece prefabricated side wall, middle wall, roof and bottom plate;The side wall top is equipped with cantilevered plate integrally formed with one, and the cantilevered plate is used to rest roof and as the template of wet connecting node;The side wall and roof, the side wall and bottom plate are connected by steel bar lap joint and post-poured concrete to form wet connecting structure;The middle wall and roof are connected by high-strength bolt to form dry connecting structure;The middle wall and bottom plate are connected by mortise and tenon structure to form dry connecting structure;The longitudinal end of the side wall, roof and bottom plate is equipped with the connecting box of built-in steel wire rope ring, and the corresponding steel wire rope ring of adjacent pipe gallery section is connected by pin shaft steel bar and forms longitudinal connecting structure by pouring concrete.The utility model has good economy, and multiple segments can also be parallel advanced during construction, and efficiency is stable.

The invention provides a micro-channel heat exchange device based on high-entropy alloy connection and a preparation method and application of the micro-channel heat exchange device. According to the micro-channel heat exchange device, the connection quality of the joints of all layers of the micro-channel heat exchange device is improved, the tensile strength, the corrosion resistance and the hydrogen embrittlement resistance are improved, and the compactness, the corrosion resistance and the hydrogen embrittlement resistance of the fluid contact surface in the micro-channel heat exchange device are improved; the strength, the corrosion resistance and the hydrogen embrittlement resistance of the micro-channel heat exchange device are integrally improved, so that the micro-channel heat exchange device based on high-entropy alloy connection is suitable for places with high requirements for the space utilization rate and the reliability such as a hydrogen refueling station, and is particularly applied as a micro-channel heat exchanger of a hydrogen cooling system of the hydrogen refueling station.

This utility model provides a steel pipe pile assembly component and a steel trestle. The steel pipe pile assembly component includes a first sleeve, a second sleeve, and a partition plate. During assembly, two sections of steel pipe piles are respectively fitted into the first and second sleeves and then fixed with bolts. This avoids the series of processes involved in traditional welding operations, such as positioning, beveling, grinding, welding, and weld inspection, greatly improving installation speed. It also reduces the high requirements of traditional welding methods on the operating environment, enabling rapid construction even in complex environments such as the field, damp areas, and river channels. Unlike welding methods, it is not easily affected by human factors, leading to defects such as incomplete welds and cracks, resulting in better connection quality and stronger controllability. Furthermore, it avoids the disassembly difficulties associated with welding methods. After assembling the steel pipe piles using this assembly component, disassembly can be performed when necessary, facilitating the replacement of specific sections of the steel pipe piles or connecting parts, thus improving service life and maintenance efficiency.

The present application relates to oil and gas pipeline technical field, especially to a variable wall thickness steel pipe, a processing method and an oil and gas pipeline connecting system, aiming at solving the problem of large stress concentration and affecting the quality of oil and gas pipeline connection of unequal wall thickness steel pipe. The variable wall thickness steel pipe provided by the present application is used for connecting the first steel pipe and the second steel pipe with different wall thicknesses, the outer circle diameter of the variable wall thickness steel pipe is constant and equal to the outer circle diameters of the first steel pipe and the second steel pipe; the inner circle diameter of the variable wall thickness steel pipe gradually increases from one end to the other end; the inner circle diameters of the two ends of the variable wall thickness steel pipe are equal to the inner circle diameters of the first steel pipe and the second steel pipe respectively. The outer circle of the variable wall thickness steel pipe is equal to the outer circle diameters of the first steel pipe and the second steel pipe, and the inner circles of the two ends are equal to the inner circle diameters of the first steel pipe and the second steel pipe respectively, which eliminates the wall thickness difference, thereby avoiding stress concentration and improving the connection quality of the oil and gas pipeline girth weld.