117 results about "Bell mouth" patented technology

The invention belongs to the technical field of house building roof drainage, and particularly relates to a double-sleeve structure for inverted roof drainage and a construction method of the double-sleeve structure. The structure is composed of a DN100 pre-embedded sleeve, a DN50 newly-added sleeve, a connecting rib and a waterproof horn mouth. The two sleeves are concentrically welded into a whole, a top opening of the pre-buried sleeve is flush with the lowest point of a slope making layer and used for draining seepage water above a waterproof layer, and a top opening of the newly-added sleeve is higher than a finished surface and provided with a horn mouth used for collecting surface open water to form an upper-lower layered independent drainage channel. During construction, the double-sleeve assembly is synchronously pre-buried in one-time pouring concrete of the structural slab and the upturning beam, a slope making layer, a waterproof layer, a heat preservation layer and a protection layer are constructed in sequence subsequently, post drilling is not needed, and the heat preservation layer and the waterproof layer are not damaged. Hydrostatic pressure of the waterproof layer can be thoroughly eliminated, the leakage risk of the roof is remarkably reduced, and the device is simple in structure, accurate in positioning, durable, free of maintenance and suitable for newly-built and reconstructed inverted roofs.

A heat source unit (1) of an air heat pump has a housing (10), a fan (22) housed in the housing (10) and rotatable about a central axis (30), a bell mouth (32) having an opening (32), and a grille (40, 42) covering the opening (32). The grille (40, 42) comprises a plurality of longitudinal first louvers (46), where each of the first louvers (46) has an inlet portion (66) facing the fan (22), and at least the inlet portions (66) are inclined with respect to a central axis (30) of the fan (22), where the inclination angle (alpha) varies in the longitudinal direction of the respective first louvers (46).

According to the post-grouting steel column base and the construction method, the steel column base adopts a hollow steel pipe, and the bottom of the steel column base is made into an expanded horn mouth; grouting holes are formed in the bottoms of the steel column feet; both the grouting hole and the hand hole are provided with threads and plugs; a civil foundation connected with the steel column base is provided with a cup opening with the narrow upper portion and the wide lower portion, and anchoring steel bars are embedded in the cup opening. The steel column base is installed on site through two times of grouting, the first time of grouting is conducted from the edge of a cup opening, the cup opening on a civil engineering foundation is fully filled, and meanwhile the original open column base is changed into a closed space; after first grouting hardening, the upper steel column and the steel beam which are connected with the steel column base can be installed; the micro-expansion grouting material is poured from a grouting opening in the lower end of the steel column foot for the second time of grouting, and the hole is locked by screwing a bolt after the micro-expansion grouting material is fully grouted until the grouting material is hardened. The construction site civil engineering foundation can be independently constructed, and adjustment space is available during installation; the connection strength is higher than that of a traditional mode.

An outdoor unit according to the present invention comprises: a box-shaped housing in which an intake port and a blowout port are formed; and an axial flow fan that is disposed inside the housing and rotates to form airflow. The housing has a cylindrical bell mouth that constitutes the blowout port and surrounds the outer circumference of the axial flow fan. The axial flow fan is provided with: a hub that is rotationally driven and forms a rotating shaft; a plurality of blades that are formed around the hub and extend radially outward from the hub; and a cylindrical ring part that is formed in an annular shape when viewed in the axial direction of the rotating shaft and is integrally formed with each blade end at the radially outer side of the plurality of blades. In the axial flow fan, a portion on the downstream side in the direction of the air flow formed by the rotation of the axial flow fan is positioned inside the bell mouth, and a portion on the upstream side thereof is positioned outside the bell mouth, and the ring part is disposed further to the upstream side than the bell mouth inside the housing.

The application discloses a high-speed compressor, which comprises a high-speed compressor support and a protective shell, wherein the high-speed compressor support is fixedly connected with the protective shell, a driving space is formed by the high-speed compressor support and the protective shell, a regulating assembly is arranged on the upper portion of the side surface of the protective shell and penetrates the protective shell and extends into the driving space, and an inlet casing assembly is arranged on the side of the regulating assembly close to the high-speed compressor support. The inlet guide section is an important part of the inlet of the centrifugal compressor, which mainly functions to keep the airflow entering the compressor stable, reduce airflow turbulence, and the diameter of the air inlet pipe is usually large in the traditional design, so that the airflow is prone to turbulence when entering from the atmosphere, which influences the performance of the impeller. In order to avoid this phenomenon, the air inlet pipe is optimized and designed, and the inlet of the inlet casing is designed in a trumpet-shaped expansion mode, so that the airflow is gradually and uniformly expanded after entering.

The invention discloses a pressurizing building based on assembly type unit curtain walls and a construction method thereof. The construction method comprises the steps that a plurality of curtain walls are prefabricated, hanging pieces are installed on the inner surfaces of the unit curtain walls, bellmouths are formed in the tops of the unit curtain walls, and inserting pieces are arranged at the bottoms of the unit curtain walls; mounting a main body frame, and mounting a hanging seat on the outer surface of the main body frame; positioning steel pipes are installed, the unit curtain walls are installed above the positioning steel pipes, the hanging pieces are correspondingly hung on the hanging seats, after the positions of the unit curtain walls are finely adjusted, the inserting pieces of the unit curtain walls on the upper portion are correspondingly inserted into the bell mouths of the adjacent unit curtain walls on the lower portion, and then the hanging pieces are locked on the hanging seats; gaps between the unit curtain walls are sealed to form a curtain wall system; and roof panels are installed to obtain the pressurized building. The obtained supercharged building has excellent thermotechnical and airtight performance, extremely high structural reliability and durability and good construction adaptability and economical efficiency, and the mounting adaptability of the unit curtain wall is greatly improved through cooperation of a hanging mode and a socket mode.

The utility model relates to the technical field of bottom plate runner machining, and discloses a positioning device for tool bottom plate machining, which comprises an operation table, and a positioning assembly is arranged on the top end face of the operation table. According to the positioning device for tool bottom plate machining, the inner wall of the clamping frame can be matched with bottom plates of different sizes through the horn mouth, the bottom plates of different sizes can be clamped and limited, in addition, the positioning device can be self-adaptive to the bottom plates of different sizes, a certain guiding effect is achieved, even if the position has small deviation during feeding and discharging, the bottom plates can be smoothly guided to enter the correct clamping positions, and the machining efficiency is improved. The two sets of movable frames synchronously move, the bottom plate is naturally positioned with the center line as the symmetric line, symmetry in follow-up operation is easily kept, size deviation is avoided, the bottom plate is pulled and then turned over outside, the bottom plate is kept on the clamping frame all the time, the bottom plate does not need to be taken down, replaced, aligned and positioned again, and therefore it can be guaranteed that the position of the bottom plate is accurate after the bottom plate is turned over, and the clamp does not need to be frequently adjusted.

A fan of which the blowing efficiency can be increased, the fan including a blade and a bell mouth. The blade rotates around a rotation axis that is along a first direction. The bell mouth includes a staircase structure positioned around the blade along a first plane perpendicular to the first direction. The staircase structure surrounds an opening that spreads toward a blowing direction of the blade.

The utility model relates to the field of pipe connecting engineering, in particular to a pipe and inspection well connecting structure. Comprising a connecting pipe fitting used for being installed in an inspection well and a pipe in butt joint with the connecting pipe fitting. The pipe comprises a pipe body and a socket end fixedly arranged at one end of the pipe body, and the connecting pipe fitting comprises a spigot end and a horn mouth arranged at the end of the spigot end. The horn mouth is located in the inspection well, the spigot end is located outside the inspection well, and the socket end can be connected with the spigot end; an anti-falling groove is formed in the inner wall of the socket end, an anti-falling part is fixedly arranged on the spigot end, and the anti-falling part is used for entering the anti-falling groove to be clamped with the anti-falling groove. According to the pipe and inspection well connecting structure, a cable can conveniently penetrate through the connecting structure.

The present disclosure relates to a ceiling mounted air conditioner indoor unit (1) for a heat pump comprising a refrigerant circuit, the indoor unit comprising: a casing (2) comprising an air inlet (2a) and at least one air outlet (2b); a drain pan (3) located at a bottom portion of the casing (2) having a first rim (3a) and a second rim (3b); a heat exchanger (4) being part of the refrigerant circuit and arranged above the drain pan (3) to accumulate water dripping from the heat exchanger (3) in the drain pan (3); a fan (5) housed in the casing (2) to draw air from the air inlet (2a) and discharge it from the at least one air outlet (2b) through the heat exchanger (4); a bell mouth (6) located at the air inlet (2a) and used to direct the drawn air to the fan (5); and a refrigerant leak detection sensor (7) for detecting a refrigerant leaking from the refrigerant circuit, wherein the refrigerant leak detection sensor (7) is located between an outer surface (8) of the second rim (3b) of the drain pan (3) and an inner surface (9) of the bell mouth (6), wherein the outer surface (8) of the second rim (3b) of the drain pan (3) and the inner surface (9) of the bell mouth (6) face each other.

The utility model discloses an efficient rotary cleaning device, and belongs to the technical field of product cleaning. Comprising an inlet outer cover and a conical horn mouth, and the inlet outer cover and the conical horn mouth are arranged in a matched mode to form a cleaning cavity for containing a to-be-cleaned product; n groups of air blowing pipes which are arranged in the vertical direction are arranged on the conical horn mouth, are equidistantly arranged along the same height of the conical horn mouth, and are provided with a plurality of groups of air blowing holes; the inlet outer cover is connected with a waste residue guide outer cover, and the waste residue guide outer cover is matched with the conical horn mouth in appearance, so that waste residues blown out through the blow holes are blown to the waste residue guide outer cover and the inclined surface of the conical horn mouth and fall into the discharge port. Multi-angle cleaning is achieved by arranging a plurality of sets of air blowing pipes and a plurality of sets of air blowing openings in the conical horn mouth, the waste residue guiding outer cover and the conical horn mouth are arranged in a matched mode, all cleaned waste residues fall to the discharging opening due to the gravity effect, all the cleaned waste residues are collected, and the problem of secondary pollution to products is completely eradicated.

The invention relates to the technical field of laser marking, in particular to a multi-degree-of-freedom self-adaptive positioning mechanism and laser marking equipment. According to the multi-degree-of-freedom self-adaptive positioning mechanism and the laser marking equipment provided by the embodiment of the invention, the plurality of spiral augers which are connected end to end and are opposite in rotation direction are erected on the belt conveyor, and a blade-free transition section design is adopted between every two adjacent spiral augers. The open end of the V-shaped flow dividing guide rail and the second end of the material gathering guide rail are seamlessly connected and used in a matched mode, and the whole material gathering guide rail is in a horn mouth shape and gathers towards the transition section of the spiral auger. In this way, bulk workpieces in batches can be gathered towards the transition section to form uniform intervals, and the situation that the workpieces are stacked is avoided. And meanwhile, the inclined postures of the workpieces can be corrected through cooperation of the V-shaped material distributing guide rail and the material gathering guide rail, so that the to-be-marked faces of the batch workpieces are in the unified orientation, and the high-precision marking requirement is met.

The application discloses an entrance guide groove structure, which comprises a base arranged at the front part, a support arranged at the rear part, a trumpet mouth, a first supporting top plate and a second supporting top plate; the base and the support are arranged along the rolling center line; the trumpet mouth is arranged at the front side top of the base; the first supporting top plate and the second supporting top plate are alternately and spacedly arranged on the base and the support; a plurality of inclined slot holes are arranged on the first supporting top plate along the length direction; the slot holes are in strip shape. A rolling production line machine based on a production line can prevent shearing and head warping. The application designs an entrance guide groove structure and a production line machine production process for preventing heat deformation, improves the heat dissipation function of the entrance guide groove, and reduces the phenomenon of steel stacking caused by the unstable entry of the rolled piece into the double-length shears due to the heat deformation of the entrance guide groove.

The utility model discloses a horn mouth blocking structure of a conveying line, which relates to the technical field of conveying lines and comprises a conveying bed, a side block, a vertical block, an inclined block and an angle block, and a horn-shaped blocking form is formed through specific layout, so that materials are blocked and are convenient to put; the side supports and the angle supports are obliquely arranged, so that the supporting effect is enhanced, and the internal space is increased; the supporting adjusting mechanism comprises an extension plate, a threaded rod, a fixing button, a supporting piece, a clamping base, a locking button, a supporting rod and a supporting roller, the height can be adjusted according to the size of goods, stable supporting is provided, fatigue of operators is reduced, meanwhile, movable supporting is achieved through the supporting roller, and flexibility is improved.

The application belongs to the technical field of aviation equipment, and particularly relates to a metal conduit protection cap. The protection cap is integrally processed from elastic rubber material and comprises a main body, a cavity, a boss and a conical tail. The main body is a cylindrical structure with one end closed and the other end open, and the closed end is inwardly processed with the boss for limiting and sealing the bell mouth of the metal conduit. The cavity is formed between the outer wall of the boss and the inner wall of the main body, and is used for accommodating the bushing and the outer sleeve nut which are successively sleeved outside the bell mouth. The conical tail is a circular truncated cone shell structure, with the large-diameter end connected with the open end of the main body and the small-diameter end sleeved on the outer wall of the metal conduit below the bushing. The boss and the conical tail cooperate to complete the axial positioning and primary sealing of the protection cap on the conduit. In the natural state, the small-diameter end of the conical tail slightly smaller than the outer diameter of the metal conduit is tightly wrapped on the conduit to perform secondary sealing. The protection cap has high sealing efficiency and good effect, and can be recycled and reused.

The utility model discloses a submarine cable inlet wire arrangement device for a J-shaped pipe of a pile body, and belongs to the technical field of offshore wind power engineering. Comprising a steel pipe pile provided with a first through hole. The structure further comprises a J-shaped pipe body penetrating through the first penetrating hole, one end of the J-shaped pipe body is obliquely downwards located on the outer side of the steel pipe pile, and the other end of the J-shaped pipe body is obliquely upwards located in the steel pipe pile. The J-shaped pipe body comprises a lower horn mouth, a straight section, a bent section and an upper horn mouth which are sequentially connected. Wherein the lower horn mouth is located outside the steel pipe pile, the straight section penetrates through the first through hole, and the bent section and the upper horn mouth are located inside the steel pipe pile and extend towards the top end of the steel pipe pile. The first through hole has the inclination angle, so that the J-shaped pipe body integrally extends towards the top end of the steel pipe pile after penetrating through the first through hole, and the deployment height of the fan single-pile foundation accessory structure can be effectively controlled in combination with the design of the bent section in the J-shaped pipe body.

The utility model relates to the technical field of fans, in particular to a support and air duct assembly of a fan, which solves the problems that an outer ring of an impeller and the inner wall of an air duct cannot be provided with a smaller gap in the structure of an existing fan and the rigidity of a support of the fan is insufficient, and is provided with a support and an air duct, the inner ends of the connecting ribs are fixed to the motor fixing disc, the outer ends of the connecting ribs are fixed to the air cylinder, the air cylinder and the motor fixing disc are steel plate forming parts, the connecting ribs are steel plate forming parts, the inner ends and the outer ends of the connecting ribs are welded to the motor fixing disc and the air cylinder respectively, and the connecting ribs are provided with air inlet folded edges close to the impeller and air outlet folded edges far away from the impeller. An included angle is formed between the air inlet folded edge and the air outlet folded edge, the air outlet folded edge is parallel to the axis of the air duct, the outer end of the connecting rib is provided with a welding folded edge attached to the inner wall of the air duct, the air outlet of the air duct is a horn mouth with a large opening outside, and the welding folded edge is attached to the inner wall of the horn mouth.

The invention relates to the technical field of air tightness testing, in particular to an underwater air tightness testing system capable of multiple groups of steel pipes and a testing method.The underwater air tightness testing system capable of multiple groups of steel pipes comprises a water tank, a lifting frame, a lifting driving assembly, a clamping and positioning device and an air tightness device, the airtight device can block two ends of the steel pipe and perform ventilation detection; the invention further comprises a testing method based on the system, the testing method comprises the steps of lifting the lifting frame, placing the steel pipe, blocking, descending, carrying out ventilation detection, lifting and taking the pipe, and the outer surface of the steel pipe can be dried through the horn mouth and the heating assembly after the pipe is taken. According to the device, underwater airtight detection can be carried out on multiple groups of steel pipes, the detection efficiency and accuracy are improved through reasonable device and step design, and meanwhile, the outer surfaces of the detected steel pipes can be dried.

The utility model relates to a novel gas explosion device in the technical field of recreational facilities. The water tank is a columnar high-pressure tank, the bottom of the water tank is provided with the base made of a steel plate, the base is provided with a bolt hole, the center of the water tank is provided with the accelerating device, the top face of the water tank is provided with the exhaust valve, and the side face of the upper portion of the water tank is provided with the air inlet pipe; the air inlet pipe is bent upwards after entering the water tank, an outlet is close to the top of the water tank, and a water supplementing pipe is arranged on the side face of the lower portion of the water tank and provided with a check valve. The accelerating device comprises an accelerating pipe, a spray head and a rectifying ring, a conical horn mouth is welded to a lower opening, in the water tank, of the accelerating pipe, the rectifying ring is welded to the lower portion of the conical horn mouth, the rectifying ring is formed by arranging three evenly-distributed radial steel belts in a circular steel belt, the spray head is a conical cap with a tapered inner cavity, and the top end of the conical cap is connected with a straight pipe. The conical cap is in threaded connection with the accelerating tube.

The utility model discloses a cooling system structure capable of improving three-way similar layer drainage bellmouth deformation, which comprises a temperature control system, a product cavity and a core structure, the temperature control system comprises a heating channel and a cooling water channel, the cooling water channel is distributed around the product cavity, and the heating channel penetrates through a bellmouth core. The product mold cavity is located in the movable mold frame and the fixed mold frame, the mold core structure comprises a bell mouth sliding block, a branch mouth sliding block, a bell mouth mold core and a branch mouth mold core, and the bell mouth mold core and the branch mouth mold core are located in the product mold cavity. Before production, a cooling water path is communicated to introduce normal-temperature cooling water; and then the heating channel is communicated, and the temperature of the filling tail end is increased. The heating channel can be heated by a heating strip or a mode of introducing water vapor or hot oil, the temperature of the filling tail end is increased, the molecular chain orientation degree is reduced, the stress of the area after mold filling is completed is reduced, and it is ensured that bellmouths of tee joint products on the same layer do not deform.

This utility model discloses a bell-shaped connection device for workover rigs. The device includes a first connecting assembly and a second connecting assembly. The first connecting assembly includes a first telescopic adjustment pipe, a main return pipe, and a flexible rubber joint connected sequentially. The first telescopic adjustment pipe is connected to the side of the expansion section of the bell-shaped opening, and the flexible rubber joint is used to connect to a mud collection device. The second connecting assembly includes a second telescopic adjustment pipe, the first end of which is connected to the second connecting section of the bell-shaped opening, and the second end of which is used to connect to a blowout preventer assembly. This bell-shaped connection device for workover rigs is easy to install on-site, reliable in operation, and adaptable to various adjustment scenarios.

The process of top-down construction of basement outer wall after construction of horizontal bracing structure by reverse construction method, sequentially constructs the horizontal bracing structure from top to bottom, simultaneously pours the guide wall of the basement outer wall during the construction of each layer of horizontal bracing structure, and pre-buries the steel sleeve in the guide wall for pouring the outer wall, specifically comprising the following steps: S1, construction of surrounding purlin; S2, horizontal bracing structure formwork; S3, pouring the first horizontal bracing structure; S4, sequentially constructing the lower horizontal bracing structure; S5, construction of outer wall formwork; S6, pouring of outer wall concrete; the application replaces the traditional "horn mouth" as the pouring and vibrating channel of the outer wall concrete by reserving the guide wall and steel sleeve in advance, ensures that the outer wall is poured to the top at one time, avoids the narrow space of the "horn mouth" from causing the new and old concrete contact part to be not vibrated in place, and causes the leakage hidden danger of honeycomb and dog hole of the old concrete.

The application provides a construction adjustment method for a portal girder when the girder is too long. By adjusting the position of the web plate-to-rib of the girder bell mouth and the rigid leg, the girder can still maintain the perpendicularity of the leg without adjusting the span of the trolley through the dislocation of the web plate-to-rib. The small dislocation can also meet the requirements of the web plate-to-rib of the leg, the correction amount is small, the size of the girder does not need to be modified again, the construction requirements are met while the investment cost is saved, and the overall structure of the portal is stable.

The unmanned aerial vehicle heat management device comprises an air inlet pipe and a heat exchange module, the air inlet pipe comprises a pipe part and a bell mouth bend pipe, the bell mouth bend pipe has a first bend pipe end and an air outlet end, one end of the pipe part is connected with the first bend pipe end, the air outlet end is connected with the heat exchange module, the pipe part is located on one side of the heat exchange module, a plane parallel to the height direction of the unmanned aerial vehicle heat management device is defined as a plane, and the first bend pipe end and the air outlet end both face the plane. The application can improve the compactness of the unmanned aerial vehicle heat management device as a whole and reduce the occupied area.

The bran removing device comprises a bran removing body, a material uniformizing plate, an air inlet and an air outlet, the material uniformizing plate is arranged at the top of the bran removing body, the air inlet and the air outlet are located in the left side and the right side of the lower portion of the bran removing body respectively and connected with the bran removing body, the air inlet is designed to be externally hung with a shutter, and the air volume is adjustable; the air outlet is horn-shaped, and a slope is arranged at the lower end. According to the bran removing device disclosed by the utility model, by utilizing the gravitational acceleration of wheat, a material layer can be thinned by 1 / 3 of the original thickness within the height of 1.8 m, the particle spacing is increased, and the ventilation is improved, so that the impurity removing efficiency is improved; according to the compartment type bran removal device, the air speed is adjusted by adjusting the angle of a shutter, it is ensured that materials fall uniformly through the design of a material uniformizing plate at the top of the bran removal body, the wheat bran separation efficiency is effectively improved, and by optimizing the air duct design, the difficulty that air pressure penetrates through a material layer is reduced, and energy consumption is reduced.

This invention relates to the field of jacking pipe installation, and more particularly to a sealed, self-locking, solid-wall jacking pipe for buried drainage. The sealed, self-locking, solid-wall jacking pipe for buried drainage includes a pipe body with a spigot and a socket at both ends; a reversible guide sleeve is disposed within an annular groove on the outer wall of the spigot, having a first state of being completely contained within the groove and a second state of the movable end flipping outward to form a guide bell-shaped opening; wherein, the inner and outer circumferential surfaces of the reversible guide sleeve are provided with toothed structures, and the bottom of the groove and the inner wall of the socket are provided with grooved structures matching the toothed structures to form an axial lock for the two pipe sections. In the sealed, self-locking, solid-wall jacking pipe for buried drainage provided by this invention, a guide channel is provided for the insertion of the socket by setting a reversible guide sleeve that can be manually flipped into an expanding bell-shaped opening. Construction personnel can easily achieve a high degree of concentricity in the initial connection of the pipes.

The utility model relates to elbow pipe end horn mouth outer diameter turning equipment which comprises a workbench, a workpiece clamp and a turning mechanism. According to the technical key points, the turning mechanism comprises a headstock, a main shaft, a main shaft outer shaft sleeve, a first outer shaft copper sleeve and a second outer shaft copper sleeve, wherein the main shaft outer shaft sleeve sleeves the front part of the main shaft through a thrust bearing; the first outer shaft copper sleeve is arranged between the front part of the peripheral surface of the main shaft outer shaft sleeve and the inner wall of a cavity of the headstock; the second outer shaft copper sleeve is arranged between the rear part of the peripheral surface of the main shaft outer shaft sleeve and the inner wall of the cavity of the headstock; the cutter head is arranged at the front end of the main shaft, the spline housing is connected with the rear part of the main shaft, the rotary driving mechanism is connected with the spline housing, the horizontal cutter feeding air cylinder is arranged above the headstock, the connecting frame is connected between an outer shaft sleeve of the main shaft and a cylinder rod of the horizontal cutter feeding air cylinder, and an axial avoiding hole corresponding to the connecting frame is formed in the top surface of the headstock. The device solves the problem that the turning machining difficulty of the horn-mouth-shaped end of an existing bent pipe is large, so that the dimensional tolerance requirement of a product is met, and the machining precision and the machining efficiency of the product are remarkably improved.

The utility model relates to carton technical field especially is a kind of multilayer protective carton with visual window, including carton bottom frame, the top of carton bottom frame is equipped with upper panel, rectangular window and bell mouth are respectively set up from top to bottom in the surface middle position of upper panel, the inside top surface of bell mouth is adhered with PVC transparent sheet, in the utility model, by the cover plate, central block, lightweight continuous column, color sealing gasket, adhesive layer, lower insertion frame and hollow buckle plate being set, the multilayer protective carton with visual window can be conveniently made when visualizing, the reserved setting of rectangular window and bell mouth is lowered, respectively in the inside of both, install upper fastening assembly and hollow buckle plate, to reach the strength of the multilayer protective carton reserved window position, prevent the problem that multilayer protective carton is weakened in subsequent actual use, partial strength and overall compressive strength significantly reduce, reduce the risk that window edge position is prone to tear damage.

The invention discloses an underwater leveling method for a single-point jacket. The underwater leveling method for the single-point jacket comprises the steps that the single-point jacket is hoisted in place underwater, and four sleeves connected with the jacket are inserted into a seabed; steel piles are inserted into four sleeves connected to the single-point jacket at intervals correspondingly, and the single-point jacket is preliminarily positioned; the lowest point position of the single-point jacket in the horizontal direction is measured, and the leveler is inserted into the steel pile of the sleeve at the lowest point position; a leveling oil cylinder of the leveler is clamped on a horn mouth of the sleeve; the leveling oil cylinder retracts according to the distance between the lowest point position and the highest point position, and the sleeve is lifted; after the lowest-point sleeve is lifted, the levelness of the single-point jacket in the horizontal direction is measured again, and the lowest-point sleeve measured for the second time continues to be lifted; measuring the levelness of the single-point jacket to meet the design requirement, and recycling the leveler. According to the underwater leveling method for the single-point jacket, the leveling efficiency and the leveling precision can be improved, and dependence on divers is avoided.