20results about How to "Avoid direct erosion" patented technology

The utility model relates to the technical field of papermaking felt, in particular to a novel wear-resistant and corrosion-resistant composite papermaking felt. Comprising a base cloth layer, the base cloth layer is internally provided with a self-adaptive adjusting layer used for reducing stress concentration and deformation generated in the use process of the blanket, and the outer wall of the base cloth layer is provided with a micro-nano layer used for increasing the surface roughness of the blanket. According to the novel wear-resistant and corrosion-resistant composite papermaking felt, the conditions of stress concentration and deformation of the felt in the using process can be reduced through the self-adaptive adjusting layer in the base cloth layer, and the abrasion resistance and corrosion resistance of the felt are improved through the micro-nano layer and the protective layer. The novel composite papermaking felt has the advantages that the surface roughness of the felt is increased, meanwhile, the felt is effectively prevented from being directly eroded by slurry and chemicals, the possibility of abrasion and corrosion is reduced, the service life of the novel composite papermaking felt is prolonged, and economic loss is avoided.

The utility model relates to motor fault monitoring technical field, and disclose a kind of underground motor fault monitoring device, comprising: base, the left and right sides of base are obliquely provided with connecting plate, connecting plate is fixedly connected with base by bolt, multiple fixed plates are arranged on the upper portion of connecting plate, the front and rear sides of base are all provided with quadrilateral vertical plate, quadrilateral vertical plate is fixedly connected with base by connecting piece and bolt, the top central portion of base is provided with host computer, the top of host computer is provided with protection frame, spring detection component and phonograph pick sensor are arranged in protection frame, spring detection component and phonograph pick sensor are electrically connected with host computer, the upper portion of protection frame is provided with protective cover;Through host computer cooperation spring detection component and phonograph pick sensor gather motor vibration data, reduce the risk of downhole operation, fast response motor anomaly, reduce downtime loss, prolong the life of monitoring device.

The utility model discloses an electronic paper display module structure, and relates to the technical field of electronic paper display modules, the electronic paper display module structure comprises a TFT backboard, an Eink paper film and a PS film, the PS film is internally provided with a VcomITO layer, the Eink paper film is internally provided with an electronic ink layer, and the electronic ink layer is provided with a transparent conductive film. According to the utility model, the Vcom ITO layer is made on the PS film instead of being made on the Eink paper film traditionally, and the silver paste holes are made in the mode that the Eink paper film carries out Laster semi-cutting on the silver paste holes and the Eink paper film silver paste hole organic solvent cleaning process traditionally, and the silver paste holes are made in the mode that the PS film carries out Laster semi-cutting on the silver paste holes, the PS film silver paste hole organic solvent cleaning and the Eink paper film carries out Laster full-cutting on the silver paste holes. The Eink paper film does not need to be cleaned by an organic solvent, under the condition that processing equipment does not need to increase extra cost, the degree of edge damage of the silver paste hole for high-temperature verification of the reliability of the electronic paper module can be greatly reduced, and the reliability quality of the electronic paper display module can be effectively improved.

This utility model discloses a low-shrinkage joint structure suitable for bridge widening and reconstruction projects, belonging to the field of bridge reconstruction technology. Its key technical features include an old bridge main body, a new bridge main body, a buffer component, and a support component. A joint is pre-installed between the old and new bridge main bodies. The buffer component is located within the joint and includes a top plate, a bottom plate, and a buffer plate. The buffer plate abuts against the inner wall of the joint. A connecting column is fixedly connected between the top and bottom plates. Two symmetrically distributed sliding sleeves are fitted onto the connecting column, and a spring abuts between the two sliding sleeves. A connecting rod is hinged between the sliding sleeves and the buffer plate. The technical effect is that by setting up the buffer component and support component, cracks caused by rigid tension are avoided when the new bridge main body settles or shifts laterally. This flexible buffer mechanism can control the relative displacement at the joint within a safe range, effectively eliminating stepped misalignments on the bridge deck and ensuring driving safety and smoothness.

The utility model provides a kind of protective cover and vehicle with it.The protective cover includes: fixed support, fixed support is used to be connected with vehicle body;Protective cover shell, protective cover shell is set on fixed support, protective cover shell has accommodating space, accommodating space is used to accommodate electrical part of positioning system, the outer surface of protective cover shell is provided with mounting portion, and mounting portion is used to install positioning antenna;Wherein, mounting portion includes mounting protrusion, and mounting protrusion is set out from the outer surface of protective cover shell, and electrical connection hole is opened on mounting protrusion, and electrical connection hole is communicated with accommodating space and is set, and mounting protrusion is used to install positioning antenna;Positioning antenna includes antenna assembly and antenna shell, antenna shell includes lower shell and upper shell, and lower shell and upper shell are enclosed into antenna accommodating cavity, and antenna accommodating cavity is used to accommodate antenna assembly, and lower shell is opened with antenna via hole.The present scheme solves the problem that existing technology is vulnerable to damage caused by exposed positioning system components.

The utility model discloses a vertical wall waterproof heat preservation decoration system which comprises a waterproof layer, a heat preservation layer and an outer decoration layer which are sequentially laid outwards from the wall face of a vertical wall, and the waterproof layer is composed of macromolecule waterproof coiled materials fixed to the wall face of the outer wall and sealing materials matched with the macromolecule waterproof coiled materials. The heat preservation layer is composed of heat preservation plates sequentially arranged on the outer side of the waterproof layer, an insertion strip is installed in a gap between any two adjacent heat preservation plates, the outer decoration layer is composed of outer decoration plates fixed to the outer sides of the heat preservation plates, and the specification of each outer decoration plate is the same as that of the outer surface of the heat preservation plate on the inner side. A gap between any two adjacent outer decoration plates is filled with weather-proof sealant, and the glue solution of the weather-proof sealant is also filled in the remaining gap between the insertion strip and the adjacent heat preservation plate at the same time. By means of the mode, the water seepage prevention capacity of the wall face can be improved, the overall heat preservation and heat insulation performance is further improved, and the installation stability is better.

A track is arranged on a ship body and serves as a carrier for sliding of a permanent magnet, when the ship sails on the sea, the ship jolts under driving of sea waves, thrust generated by jolting pushes the permanent magnet to reciprocate along the track, electric energy is generated in the movement process, and the permanent magnet is driven by the track to move along the track. The power generation system can continuously generate the electric energy in the sailing process, provides additional energy support for ships, improves the energy self-sufficiency rate, reduces dependence on external energy, generates power through natural physical phenomena, does not need additional fuel cost and maintenance cost, and is energy-saving and environment-friendly. When the ship encounters energy supply interruption or emergency, the ship can maintain basic operation depending on the power generation capacity of the ship, the autonomy and flexibility of the ship are enhanced, and the requirement of the ship for executing remote tasks is met.

This application discloses a graphite heat exchanger. By installing an impact-resistant plate on the side of the graphite block facing the feed inlet, the material entering the heat exchanger from the feed inlet first impacts the impact-resistant plate. After being buffered by the impact-resistant plate, the material then enters the heat exchange holes of the graphite block through the through holes. This avoids direct erosion of the graphite block by the material, thereby extending the service life of the equipment. Furthermore, because the end cap and lower cylinder are detachably connected, the graphite heat exchanger adopts a segmented design, with the end cap and lower cylinder separated. This facilitates easy installation and removal, allowing for periodic removal of the end cap to clean all heat exchange holes. This prevents localized blockage of heat exchange holes caused by prolonged operation, which would prevent uneven material flow through the heat exchanger and lead to material concentrating in only a few heat exchange holes, accelerating erosion and perforation of those holes. This also facilitates inspection and maintenance.

The utility model provides a protective cover of an electronic water pump, which comprises a protective cover main body which is of a hexahedron structure with a containing cavity, the front side surface of the protective cover main body is provided with an opening, and the electronic water pump is fixed in the containing cavity; the front baffle is detachably mounted on the front side surface of the protective cover main body; a plurality of strip-shaped heat dissipation holes are formed in the left side face, the right side face and the rear side face of the protective cover body, and heat dissipation protruding strips are fixed to the strip-shaped heat dissipation holes in the rear side face. The protective cover body is fixedly connected with the water pump support through the damping columns. The electronic water pump motor can effectively prevent most silt, sewage and the like from directly corroding the water pump, reduce the damage rate of water pump components and the noise abnormity of the water pump, guarantee the service life of the water pump, relieve vibration force generated when the electronic water pump motor works, dissipate heat generated when the electronic water pump motor works, and improve the service life of the water pump. The heat dissipation effect is good, and the problems that electronic water pumps of new energy buses and highway buses are prone to damage, noise is increased, and the service life is shortened are solved.

The present application relates to the technical fields of metallurgical equipment, and discloses a sealing device for a super-high power electric furnace cover and a mounting method. The device comprises a cover body and a furnace flange, and a composite sealing mechanism and a guiding alignment mechanism are arranged at the joint position of the cover body and the furnace flange. A precision adjustment mechanism is arranged around the outer edge of the cover body. The guiding alignment mechanism comprises guiding protrusions and limiting grooves. The guiding protrusions are discontinuously distributed along the circumferential direction of the cover body. The limiting grooves are provided on the furnace flange. The guiding protrusions are inserted into the limiting grooves. A heat expansion compensation gap is reserved between the side wall of the guiding protrusion and the inner wall of the limiting groove. A positioning pin is arranged on the limiting groove. A positioning pin hole matched with the positioning pin is provided at the bottom of the guiding protrusion. The present application realizes accurate assembly of the cover body by means of the guiding structure. The reserved gap is suitable for high-temperature deformation. The disadvantages of manual alignment and misalignment are avoided. The sealing and joint effect is stable.

The invention discloses a cofferdam structure, a waterproof bolt device and a construction method thereof, and belongs to the technical field of building construction, and the cofferdam structure comprises a cofferdam section, a transition section and a fixing bolt. The multiple cofferdam sections are sequentially connected end to end to jointly define a containing space. A transition section is arranged between every two adjacent cofferdam sections; the fixing bolt is inserted into the transition section from the inner wall of the transition section from inside to outside in the thickness direction of the transition section. The waterproof bolt device comprises a bolt body, a waterproof sleeve, a waterproof bolt cap and a fixing sleeve. Wherein the waterproof sleeve bolt main body is arranged in the waterproof sleeve in a penetrating manner; an opening is formed in the waterproof bolt cap in the axial direction of the waterproof sleeve, the waterproof bolt cap penetrates through the waterproof sleeve and abuts against the inner wall of the waterproof sleeve, and the bolt body penetrates through the opening and is in threaded connection with the waterproof bolt cap; and the fixing sleeve can penetrate through the waterproof sleeve and is connected to the bolt main body in a sleeving manner. The waterproof bolt device construction method is applied to the waterproof bolt device.

The utility model relates to a carbon steel coated stirring shaft which comprises a shaft head shaft core, a connecting assembly penetrating through the upper end and the lower end of the shaft head shaft core, a main shaft core mounted on the upper portion of the outer side of the shaft head shaft core, a main shaft coating layer mounted on the side wall of the main shaft core, and an end coating layer mounted at the bottom end of the main shaft core. The connecting assembly comprises an inserting column, a circular truncated cone is arranged on the inner side of the inserting column, a first threaded rod is fixedly connected to the bottom end of the circular truncated cone, the first threaded rod is in threaded connection with the shaft head shaft core, a prism block is fixedly connected to the bottom end of the first threaded rod, and three inserting blocks are installed on the side wall of the inserting column in a penetrating mode. The end, close to the circular truncated cone body, of the inserting block is provided with an inclined face attached to the side edge of the circular truncated cone body, and the side edge of the inserting column is fixedly connected with a positioning strip.

The utility model discloses a thin film deposition furnace tube and chemical vapor deposition equipment, the thin film deposition furnace tube comprises a furnace body, the inner wall of the furnace body is provided with a plurality of discrete first concave structures; and the protective coating is arranged on the inner wall of the furnace body, and a plurality of second sunken structures corresponding to the first sunken structures are formed on the protective coating in the direction away from the inner wall of the furnace body. In the embodiment of the utility model, the service life of the thin film deposition furnace tube can be prolonged by arranging the plurality of first concave structures and the protective coating on the inner wall of the furnace body, and the service life of the thin film deposition furnace tube can be better prolonged by combining the first concave structures and the protective coating.

The present invention discloses a floor base, a floor assembly and a floor, comprising an upper plate, a lower plate matched with the upper plate and an elastic connection structure arranged between the upper plate and the lower plate; the upper plate, the lower plate and the elastic connection structure are all made of metal materials; the present invention ensures that the floor has a long service life, good heat conduction effect, low operating cost and good moisture-proof effect through the matching arrangement of the upper plate, the lower plate and the elastic connection structure, thereby extending the service life of the wooden floor, reducing the decoration cost, improving the decoration effect and making the installation more stable.

The utility model relates to a drainage pipe technical field especially a reinforced polypropylene mould pressing drainage pipe with anticorrosive function, including the pipe body, the pipe body includes the reinforced polypropylene drainage pipe, anticorrosive layer and protective layer that set up in turn from inside to outside, the outside of reinforced polypropylene drainage pipe is connected with anticorrosive layer and protective layer in turn through hot melting, anticorrosive layer is made of ethylene propylene rubber material, protective layer is made of high density polyethylene material, one end of pipe body is provided with annular connecting groove, the other end of pipe body is provided with annular connecting boss, the outside of annular connecting boss is provided with first sealing groove, the inside of annular connecting boss is provided with second sealing groove, the utility model discloses reinforced polypropylene drainage pipe guarantees the basic strength and drainage function of pipeline, the anticorrosive layer made of ethylene propylene rubber can effectively isolate the corrosion medium in the soil, the protective layer made of high density polyethylene further enhances the overall protection effect, effectively solved the problem that the existing drainage pipe anticorrosive performance is insufficient.

The invention provides a vibration isolation structure for a dry-type transformer. The vibration isolation structure comprises a base fixedly installed at the bottom of the dry-type transformer. A plurality of damping supporting seats are mounted on the base, and the bottom of an iron core of the dry-type transformer is attached to the top surfaces of the damping supporting seats; a damping isolation mechanism is installed at the bottom of the base and comprises a telescopic protection assembly and a damping part arranged in the telescopic protection assembly. A ventilation opening is formed in the bottom of the telescopic protection assembly, and a dustproof net is installed in the ventilation opening in an embedded mode. The damping isolation mechanism is arranged on the base, the damping supporting seat is arranged on the iron core, damping can be directly provided for the iron core through the damping supporting seat, and the damping isolation effect is guaranteed; and through the arrangement of the telescopic protection assembly, surrounding type protection can be provided for the damping part, and the damping part is prevented from being damaged by dust and rainwater in the external environment.

The utility model relates to fluid control equipment technical field, concretely is a kind of one-way rotation closed pressure control valve, including valve body, still including the A interface and B interface being communicated with valve body respectively, A interface is communicated with valve body lower end, B interface is communicated with valve body side portion, valve body is provided with valve seat, and valve seat is opened with valve port, and valve port is provided with the valve core that can be blocked to it, valve core only allows fluid to flow from A interface to B interface direction, valve core can be moved up and down relative to valve body, while moving up and down in valve body, valve core can occur rotational movement. The utility model adopts the above structure, can be applicable to oilfield various application scenarios, and adopt the mode of rotation closed, avoid the impact when valve core closes valve port, to avoid the deformation caused by closing not tight.

The present invention relates to the technical field of waterway revetment, and in particular to a method for cooperating in the construction of a revetment structure and a lock chamber of a waterway ship lock. The revetment structure of the waterway ship lock includes a revetment shore foundation, an overflow dike, and an elevated protective dam. The present invention can effectively improve the structure's ability to resist long-term water flow impact through effective structural design and construction schemes, can effectively prevent the direct erosion of the slope by the water flow, and utilizes slope protection bricks to help disperse and guide the water flow, reducing the impact force on the foundation structure, and the concrete anti-seepage panel used in the base surface layer can effectively prevent the water flow from penetrating into the foundation structure, preventing the water flow from eroding or damaging the structure, and the base belly layer has high compressive strength and stability, and its porosity is less than 3%, which can effectively reduce the penetration of the water flow into the structure, increase the overall stability, ensure that the gaps between the masonry stones are well filled, further enhance the ability to resist water flow impact, and ensure the long-term stability and safety of the project.

The application relates to the field of wind turbine nacelle noise reduction technology and discloses a wind turbine nacelle active noise reduction device, which comprises a sound collecting part, a noise reduction part, a controller and a protection assembly. The sound collecting part is arranged in the wind turbine nacelle to collect noise. The noise reduction part is arranged in the wind turbine nacelle to emit directional sound waves. The controller is electrically connected with the sound collecting part and the noise reduction part, is used for receiving noise signals and generating reverse sound wave control signals. The protection assembly comprises a sound collecting protection part, the sound collecting protection part comprises a protection box, at least part of the sound collecting part is arranged in the protection box, and a sound collecting end of the sound collecting part faces a first side of the protection box. A mesh plate is arranged on the side to enable sound to enter the protection box. The device can actively reduce noise of local noise sources in the nacelle, meanwhile, the protection assembly can adapt to the complex environment of the wind turbine nacelle, and the long-term operation reliability is ensured.

The invention discloses a sealing type valve capable of preventing a sealing surface of a small-opening down-regulation valve from being blown and corroded, and relates to the technical field of carbon brushes. The sealing type valve comprises a valve seat, a valve element used in cooperation with the valve seat is correspondingly arranged at one end of the valve seat, a valve seat sealing surface is arranged on the outer side of the end, adjacent to the valve element, of the valve seat, and a valve element sealing surface is arranged on the inner side of the end, adjacent to the valve seat, of the valve element; compared with a traditional sealing type, under the condition of small opening degree, the flow speed of a medium is high, and the medium directly washes the valve element and the valve seat sealing face, the sealing type adopts the mode that the valve seat protrudes outwards and the valve element sinks inwards, when the valve is opened, the medium directly washes the first flat and straight face firstly and then flows through the valve element sealing face, and therefore the sealing effect is achieved. The valve seat sealing face is arranged on the outer side, far away from the channel, of the valve seat and cannot be directly scoured by media, the sealing face is effectively prevented from being directly scoured, inner leakage is reduced, and the service life of the valve seat and the service life of the valve element are prolonged.