10results about How to "Easy to enter" patented technology

The present application belongs to the technical field of geotechnical engineering test, and relates to a system and method for rapidly determining the permeability coefficient of low-permeability soil in situ, which comprises an inner sleeve, an outer sleeve, a pressurizing device and a pore water pressure sensor. The inner and outer sleeves are simultaneously driven into the soil to a specified depth, and then the outer sleeve is further pressed to form a sealed test cavity; water is injected into the inner sleeve and the top is closed, and a stable air pressure is applied through the pressurizing hole to accelerate the permeation; the pore water pressure sensor pre-embedded at the bottom of the outer sleeve is used to monitor the transient change data of the pore water pressure at the soil permeation interface in real time and in situ, instead of the traditional external water level change. Based on the monitored pressure decay data, the soil parameters can be calculated. Compared with the prior art, the present application discards the unreliable water level observation link, shortens the test time from several days to several hours, fundamentally avoids the errors introduced by the capillary effect and hysteresis effect, and realizes the rapid and high-precision test of low-permeability soil in situ.

The application belongs to the technical field of oil exploitation, and is especially a sand prevention well completion structure of an easily-pulled-out downhole sand prevention pipe column, which comprises a loose sandstone formation, an isolation body filling layer and a sand prevention pipe column, an inner part of the loose sandstone formation is provided with a well mouth, the sand prevention pipe column is arranged in the inner part of the well mouth, an inner part of the sand prevention pipe column is provided with the isolation body filling layer, an upper end of the well mouth is provided with a positioning mechanism, an upper end of the positioning mechanism is provided with a sealing mechanism, the positioning mechanism comprises a seat ring, a limiting plug and a positioning sliding cylinder, the bottom end of the seat ring is fixedly connected with the limiting plug, the limiting plug is inserted into the upper end of the well mouth, and the inner part of the limiting plug is provided with the positioning sliding cylinder, the positioning mechanism and the sealing mechanism are arranged, the downhole running and pulling-out operation of the sand prevention pipe column relative to the well mouth is facilitated, the upper part of the isolation body filling layer can be sealed and protected, and the use effect is better.

The utility model discloses a ground anchor device for electric power engineering, which comprises a fixed cylinder, the outer wall of the fixed cylinder is fixedly sleeved with a spiral blade, the bottom of the fixed cylinder is provided with a drill bit, a rotating rod is rotatably mounted in the fixed cylinder, and the outer wall of the rotating rod is fixedly sleeved with a cam. A plurality of inserting rods distributed at equal intervals slidably penetrate through the front end and the rear end of the fixing cylinder, one end of each inserting rod makes contact with the cam, the top of the rotating rod penetrates through the fixing cylinder to be connected with a locking assembly, a connecting frame is movably installed at the top of the outer wall of the fixing cylinder, and a wire pulling ring is arranged at the top of the connecting frame. By means of the arrangement, firmness between the ground anchor device and the interior of soil can be improved, and stable wire pulling or wire guiding work of electric power engineering is guaranteed.

This invention provides a large-scale offshore precast pile positioning fixture and its usage method. The precast pile positioning fixture includes a positioning pile, a pile driving positioning fixture, and a layout fixture. The pile driving positioning fixture is rectangular, and adjacent sides are connected by corresponding layout fixtures, which in turn are connected to their corresponding positioning piles. In this invention, the simple layout fixture determines the positions of the two sides of the pile driving positioning fixture. Because the pile driving positioning fixture itself is rectangular and reinforced with reinforcing rods, its strength and stability are ensured. Thus, by positioning two adjacent sides of the rectangular frame with two positioning fixtures, the pile driving positioning fixture can be quickly positioned. In this invention, the pile gripper can be integrated or separate. Separate positioning rings can be opened and locked using spring locks, allowing for easy disassembly and extraction of the pipe pile.

This application belongs to the field of hydro-generator installation and discloses a stator core slot clamping device for hydro-generators with measuring function. It includes a support cylinder and an insert block disposed at the front end of the support cylinder. The first end face of the insert block has outwardly extending lugs on both sides, and the opening formed by the lugs and the first end face mates with the slot opening of the hydro-generator stator core slot. A measuring scale is provided on the outer side of the insert block. A pressure sensor is provided on the inner side of the first end face of the insert block. A threaded through hole is provided in the middle of the insert block, and a screw rod is provided inside the support cylinder. The screw rod passes through the threaded through hole and is threadedly connected to the insert block. This reduces the difficulty of clamping the stator core wires in the hydro-generator and improves installation efficiency. The pressure sensor, in conjunction with the measuring scale, can determine whether the stator wires are clamped firmly and tightly against the bottom surface of the core slot, solving the problem that the stator wires are not easily fully lowered to the bottom of the stator core slot during installation, thus affecting the installation of the slot wedges.

The utility model discloses a blocking device for wind and sand control, and belongs to the technical field of wind and sand control. The blocking device for wind and sand control comprises a bottom plate, inserting holes are formed in the four corners of the top end of the bottom plate, positioning rods are inserted into the inner sides of the inserting holes, a blocking plate is installed at the top end of the bottom plate, a plurality of through holes are formed in one side of the blocking plate, reinforcing bases are installed at the bottom ends of the two sides of the blocking plate, and one sides of the reinforcing bases are inclined. A sand guide plate is mounted on one side of the reinforcing seat, a flapping mechanism for cleaning through holes is mounted at the top end of the barrier plate and comprises a pair of retaining seats, the bottom ends of the retaining seats are fixedly connected with the top end of the barrier plate, rotating shafts are rotatably connected to the inner sides of the retaining seats, connecting sleeves sleeve the outer sides of the rotating shafts, and vertical rods are mounted at the top ends of the connecting sleeves; according to the flapping cleaning device, the flapping cleaning function can be effectively achieved, holes of the blocking plate are prevented from being blocked by wind and sand, and the flapping cleaning device has high practical value.

This invention discloses a hybrid powertrain transmission device coupling an engine and an electric motor, including an engine, a generator, and a drive motor. A rotational transmission mechanism is provided between the drive motor and the wheels. A heat dissipation protection component is provided on the gearbox of the rotational transmission. The heat dissipation protection component includes a heat dissipation fin plate disposed inside the gearbox, an air duct communicating with the outside of the gearbox, and a heat dissipation fan and a lubricant spraying assembly disposed inside the air duct. The air duct is connected to the airflow channel of the heat dissipation fin plate. When the heat dissipation fan is working, the airflow generated flows through the heat dissipation fin plate to dissipate heat inside the gearbox. At the same time, the generated air pressure drives the lubricant spraying assembly to spray lubricant at the gear meshing position. In operation, the invention enables air to continuously flow through the heat dissipation fin plate by turning on the heat dissipation fan, thereby dissipating heat from the gearbox cavity and protecting the gears.

The utility model discloses an underwater oil and gas production tree tubing hanger plug which comprises a plug body, a metal sealing ring and a guide plate which are axially connected in sequence, and an inner fishing assembly is movably connected in the front end of the plug body. A first annular step is arranged at the position, close to the metal sealing ring, of the rear end of the plug body, the first annular step is sequentially sleeved with a first supporting ring, a first V-shaped sealing ring, an O-shaped ring, a second V-shaped sealing ring and a second supporting ring in the axial direction, and the end face, away from the second V-shaped sealing ring, of the second supporting ring makes contact with the front end of the metal sealing ring. According to the underwater oil production and gas production tree tubing hanger blanking plug, the metal sealing ring is matched with the first supporting ring, the first V-shaped sealing ring, the O-shaped ring, the second V-shaped sealing ring and the second supporting ring, multiple sealing is achieved, the blanking plug can move up and down in the working barrel while sealing is achieved, and the blanking plug is convenient to use. Therefore, the blanking plug is easy and convenient to salvage and easy to operate.

The application discloses an underwater robot grabbing device with a buffer structure and belongs to the underwater robot field.The underwater robot grabbing device comprises a grabbing dynamic guide structure, a multifunctional buffer matching and adjusting claw structure, a power module, a driven transmission module and other equipment which are connected with each other.The underwater robot grabbing device is designed in cooperation with the grabbing dynamic guide structure and the multifunctional buffer matching and adjusting claw structure, so that the underwater robot grabbing device is convenient to use underwater, and a multidirectional adjustable claw is formed, so that the underwater robot grabbing device is convenient to adjust the different volumes and different clamping angles underwater, and thus the underwater grabbing is facilitated.In addition, the underwater robot grabbing device is designed in cooperation with the reciprocating positioning derivation module and the buffer claw module, so that the underwater robot grabbing device is convenient to reciprocally impact the position which cannot be clamped and fixed by the underwater hard object, so that the positioning nail is punched into the interior, the underwater robot grabbing device is convenient to be applied to the underwater ore sample grabbing, and the design of the buffer structure avoids the impact from directly acting on the whole device, and the service life is facilitated to be prolonged.

The application provides an intervertebral space matching combined fusion device and an installation tool thereof, which comprises two bags and a fusion device body; each bag comprises a bag body and a connecting head arranged on one end of the bag body, the bag body has a hollow inner cavity, the connecting head is provided with a connecting head through hole communicated with the hollow inner cavity, and the connecting head is further provided with a connecting head connecting part; the top surface of the fusion device body is provided with a fusion device through hole; a spacing plate is arranged in the fusion device through hole, and all the spacing plates divide the fusion device through hole into two bag body receiving grooves with different widths; two installation through holes are arranged on one end surface of the fusion device body; each installation through hole is communicated with a corresponding bag body receiving groove, and each connecting head can be inserted into a corresponding installation through hole. The intervertebral space matching combined fusion device, the height of the bag body can be greater than the height of the fusion device body, and then the bag body filled with bone filling material can automatically fill the uneven end plate.