43results about How to "Improve stability and security" patented technology

The application provides a method for improving the yield of oxygen-containing compounds in low-rank coal-derived soluble matters, and belongs to the technical field of low-rank coal pretreatment, and comprises the following steps: first, performing ozone oxidation pretreatment on low-rank coal to obtain modified low-rank coal; using cobalt acetate, copper acetate and iron acetylacetonate as a cobalt source, a copper source and an iron source respectively, using hydrazine hydrate as a strong reducing agent, and using a one-pot hydrothermal method to obtain magnetic Co-CuFe2O4 nanospheres; and using the prepared Co-CuFe2O4 nanosphere catalyst to perform catalytic ethanolysis reaction on the low-rank coal subjected to ozone oxidation pretreatment. In the application, appropriate ozone oxidation pretreatment can effectively improve the activity of the low-rank coal, and when the magnetic Co-CuFe2O4 nanospheres are applied to catalytic ethanolysis reaction of the low-rank coal subjected to ozone oxidation pretreatment and catalytic ethanolysis reaction of low-rank coal-related model compounds, the magnetic Co-CuFe2O4 nanospheres all exhibit excellent catalytic activity, higher-yield soluble components can be obtained, the yield of oxygen-containing compounds in the derived soluble matters is improved, and efficient and high-value utilization of the low-rank coal is realized.

The application provides a new method for improving side combustion chamber horizontal row curve, relates to the technical field of coke oven thermal regulation, and is mainly applied to the current large coke oven. With the prolongation of service time, the existence of factors such as the absence of fire clay between the masonry structure of the coke oven, the damage of the masonry, acid and alkali corrosion and the like, the internal leakage phenomenon of the coke oven occurs. Through the optimization and improvement of the equipment, the vertical flue corresponding to the side waste gas on-off valve control of the side combustion chamber is heated by coke oven gas instead of blast furnace gas. The side combustion chamber horizontal row curve in actual operation can be optimized from the'steamed bun type' to the 'oblique line type', and the uniform and stable maturation of the coke in the horizontal direction is ensured.

The utility model discloses an efficient self-heat-preservation combined assembly type wallboard structure and an energy-saving wall body structure comprising the same, the efficient self-heat-preservation combined assembly type wallboard structure comprises a wallboard body and a plurality of connecting tie pieces, the wallboard body comprises an inner side self-heat-preservation wallboard, an efficient heat preservation layer and an outer side self-heat-preservation wallboard which are sequentially arranged from inside to outside, and the connecting tie pieces are connected with the inner side self-heat-preservation wallboard, the efficient heat preservation layer and the outer side self-heat-preservation wallboard. The heat conductivity coefficient of the efficient heat preservation layer is superior to that of the inner side self-heat-preservation wall plate and that of the outer side self-heat-preservation wall plate, the fireproof grades of the inner side self-heat-preservation wall plate and the outer side self-heat-preservation wall plate both reach A2 or above, the compressive strength of the outer side self-heat-preservation wall plate reaches 0.30 MPa or above, the thickness of the outer side self-heat-preservation wall plate is 50 mm or above, and the compressive strength of the inner side self-heat-preservation wall plate reaches 3.5 MPa or above. The fireproof and heat-insulating effects are met; the overall bending resistance, fracture resistance and other properties are improved; and the safety and the stability of the efficient self-insulation combined assembly type wallboard structure are greatly improved.

This utility model discloses a cableway suspended platform installation structure, relating to the field of building construction technology. It includes a suspended platform guide mechanism and a suspended platform suspension mechanism installed on the top of a building. The guide mechanism comprises a guide mechanism frame and a guide wire rope. The upper end of the guide wire rope is connected to the guide mechanism frame, and the lower end is connected to the bottom of the building. The guide wire rope is inclined relative to the ground. A suspended platform is installed on the guide wire rope, and a pulley mechanism is installed on the suspended platform. The guide wire rope is connected to the pulley mechanism. The suspended platform suspension mechanism comprises a suspension mechanism frame and a suspension wire rope. The upper end of the suspension wire rope is connected to the suspension mechanism frame, and the lower end is connected to the suspended platform. The suspension wire rope is also connected to the movable end of a hoist. This cableway suspended platform installation structure can be installed on inclined facades and can be used for curtain wall construction, etc. It is convenient to install and dismantle, safe to operate, and saves time, solving a series of problems such as difficult scaffolding erection, high costs of scaffolding measures, and impact on construction schedules.

The invention discloses a ring network system for a well drilling site and an implementation method thereof, the ring network system comprises a redundant PLC system, at least two switch slave stations and at least two types of network lines, each switch slave station is connected with different types of well drilling equipment control systems, and the network lines are connected with the redundant PLC system. All the switch slave stations and the redundant PLC system are connected through each type of network lines to form a corresponding type of looped network, and the redundant PLC system is used for controlling the looped network system to be switched from the current looped network to the other type of looped network when it is detected that a node communication fault occurs in the connected looped network. The network stability and the system safety of a drilling site are improved, and stable operation of site construction is guaranteed.

The application discloses a method, system, electronic device and readable storage medium for obtaining gas-phase alkali metal concentration, and the method comprises the following steps: obtaining multiple operating parameters of a high-alkali coal boiler under a current working condition; inputting the multiple operating parameters into a preset temperature prediction model; obtaining a three-dimensional distribution of internal temperature of the current high-alkali coal boiler; determining preset value ranges into which the multiple operating parameters fall; each preset value range is previously provided with a preset relationship function between temperature and gas-phase alkali metal concentration; determining preset functions corresponding to the multiple operating parameters according to the preset value ranges into which the multiple operating parameters fall; and generating a three-dimensional distribution of internal gas-phase alkali metal concentration of the current high-alkali coal boiler according to the three-dimensional distribution of internal temperature and the multiple preset functions. According to the three-dimensional distribution of gas-phase alkali metal concentration, the application reduces the temperature in a high-concentration region, reduces the gas-phase alkali metal concentration, reduces the condensation of gas-phase alkali metal and the formation of low-temperature eutectic, and improves the safety and stability of the high-alkali coal boiler.

The utility model relates to an angle adjustable automobile steering axle steering knuckle belongs to automobile steering knuckle technical field, this angle adjustable automobile steering axle steering knuckle, include: transmission link, both ends of transmission link are fixedly connected with upper cross shaft and lower cross shaft, transmission buffer mechanism is used for buffering the transmission buffer mechanism setting in the steering knuckle road surface conduction vibration to one side of upper cross shaft and lower cross shaft, through setting transmission buffer mechanism in one side of upper cross shaft and lower cross axle, make the steering knuckle in the transmission steering torque at the same time to the road surface vibration is absorbed and is buffered. Protective assembly is coated in the flexible buffer layer that forms in the connecting axle outside, when the steering wheel is impacted through the elastic deformation absorption vibration energy, improves the driving smoothness and the comfort. Locking assembly sets up in the lower cross axle outside, can when parking or maintaining to the steering knuckle mechanical lock, prevent the steering wheel autorotation, enhances the safe stability of steering system.

This utility model discloses a magnetic charging base for walkie-talkies, relating to the field of charging technology for wired communication equipment. It includes a base assembly, and a magnetic head assembly is used for charging the walkie-talkie. The magnetic head assembly is connected to a control box assembly via a plug cable. The end face of the base assembly has a charging interface, a groove, and an anti-slip liner, while the end face of the magnetic head assembly has a charging port, a magnetic surface, and a protrusion. This magnetic charging base for walkie-talkies uses a magnetic connection for charging through the cooperation of the charging interface, charging port, and magnetic surface. It utilizes magnetic force to achieve a fast and stable connection, eliminating the need for cumbersome physical plugging operations, making operation simple and convenient. Simultaneously, the mechanical interlocking of the groove and protrusion assists the magnetic connection, and the high-friction anti-slip liner forms a three-dimensional anti-slip mechanism, solving the problem of insufficient stability in traditional magnetic charging and achieving a multi-dimensional anti-displacement effect.

The application relates to the technical field of power control, in particular to a coordinated control method and system for grid-connected new energy, wherein the total active power P all output by grid connection sent by an AGC of a power grid dispatching end and the real-time power P s of each grid-connected new energy power station are used to calculate an active power optimization distribution value of each target hydroelectric generating set; a first instruction I1 containing the active power optimization distribution value is sent to the target hydroelectric generating set participating in compensation, so as to instruct the target hydroelectric generating set to carry out load adjustment based on the active power optimization distribution value; when a power peak appears in the new energy power station, the target hydroelectric generating set reduces the output of active power; when a power valley appears in the new energy power station, the target hydroelectric generating set increases the output of active power; thereby, the change of grid-connected power is reduced, the accommodation capacity of the power grid for new energy is improved, and the safety and stability of power grid operation are improved.

The application relates to the technical field of optical chip testing, and relates to a chip testing system, which comprises a connecting piece, a temperature control device, a chip and a temperature measuring device.The connecting piece is provided with a recess, and the edge of the recess forms a corresponding enclosing part.The lower surface of the temperature control device is arranged in the recess through adhesive material.The chip is arranged on the upper surface of the temperature control device through adhesive material.The temperature measuring device is arranged on the upper surface of the temperature control device through adhesive material.The recess is extendedly provided with an outlet channel, and the signal lines of the temperature control device and the temperature measuring device are led out through the outlet channel.The testing system provided by the application is beneficial to realizing global testing of the chip.

The invention relates to the technical field of nursing materials, and discloses eye washing liquid for relieving eye fatigue and a preparation method thereof.The eye washing liquid is prepared from trehalose, taurine, sodium gualenate, sodium hyaluronate, ergothioneine, vitamin B12, vitamin B6, xanthophyll, mint, a humectant, a bacteriostatic agent, a chelating agent, a pH regulator and deionized water. Through the synergistic effect of the first synergistic composition and the second synergistic composition, retina cell injury induced by blue light can be effectively repaired, the repairing effect is superior to that of simple addition of a single component, blue light oxidative injury is repaired through a multi-target synergistic mechanism, a three-layer structure of a tear film lipid layer, a water layer and a mucoprotein layer can be reconstructed, and the repairing effect is good. According to the present invention, the tearable film stability is significantly improved, the excellent protection and repair effect is provided, the compatibility of the components is good, the product stability is high, and the multiple effects of ocular surface cleaning, asthenopia relieving, conjunctival congestion reducing and blue light oxidation damage preventing are provided.

The utility model discloses a wiredrawing mechanism for a copper clad aluminum enameled wire, which comprises a box body, a partition plate is fixedly connected to the middle position in the box body, backflow holes are arranged at two ends of the partition plate, connecting pipes are fixedly connected to two ends of the partition plate, cooling pipes are fixedly mounted at the upper ends of the connecting pipes, and the cooling pipes are fixedly connected to the lower ends of the connecting pipes. Wire drawing dies are rotatably mounted at the two ends of the cooling pipe, driven gears are fixedly connected to one ends of the wire drawing dies, the driven gears are rotatably connected to the two ends of the cooling pipe, mounting frames are fixedly connected to the two ends of the upper surface of the cooling pipe, and rotating shafts are rotatably mounted at one ends of the mounting frames; the two ends of the rotating shaft are rotatably provided with intermediate gears, the intermediate gears are engaged with one sides of the driven gears, and one end of the mounting frame is fixedly provided with a motor, so that the two ends can be synchronously driven for rotation adjustment, the uniformity of wire drawing is improved, the surface quality is ensured, combined use is facilitated, and the adaptability is high.

The utility model discloses a cable trench support capable of separating strong current from weak current, which comprises a cable trench and a stress rod, the bottom of the stress rod is fixedly connected with a bottom plate of the cable trench, a reinforcing rod is mounted between the lower part of the stress rod and a side wall of the cable trench, a plurality of cable supports are mounted on two sides of the upper part of the stress rod in a layered manner, and the cable supports are connected with the stress rod. The cable support on one side serves as a strong current line support, and the cable support on the other side serves as a weak current line support. The utility model has the advantages of simple structure, safety, reliability and clear stress, and is particularly suitable for cable trenches with steep slope surfaces, limited space and strong and weak current separation requirements.

The invention relates to the technical field of short message verification, and discloses a short message verification code interface refreshing prevention method based on Redis. Comprising the following steps: acquiring mobile phone number information and verification code sending button pressing information through a front-end page; checking a button state through a front-end page, and carrying out front-end anti-brushing checking; a short message verification code sending interface is called through a rear end to receive mobile phone number information, and Redis anti-refreshing check is carried out; calling a third-party short message service through the rear end to send the verification code, and sending a verification code sending result through the rear end; a verification code sending result sent by the rear end is received through the front end, and a front end prompt is generated according to the verification code sending result; obtaining mobile phone number information and verification code information through a front-end page, and sending the mobile phone number information and the verification code information to a rear end for verification; the method has the advantages of remarkably improving the security and stability of the verification code interface, the resource utilization rate and the overall service quality of the platform.

This utility model belongs to the field of converter technology and discloses a multi-functional combination plug. The plug includes a base and a plug body. The plug body includes at least a first plug and a second plug, both of which are disposed on the base. Both the first and second plugs are foldable. The base has corresponding slots for receiving the first and second plugs, respectively. The first slot and the second slot are connected. A notch is provided on the side of the first plug facing the second slot to accommodate a portion of the second plug. The fact that the second plug can be partially accommodated within the notch further shortens the distance between the first and second plugs, reducing the required height and size of the base. This effectively avoids the problem of unstable insertion into the socket due to the base being too high, greatly improving the safety and stability of the charging process and thus significantly enhancing the user experience.

The invention relates to the technical field of power electronics, and discloses a cooperative control method and device suitable for a fractional order type intelligent load and a medium. Comprises: acquiring node information; calculating a power reference value based on any node information; calculating a reference current based on the power reference value; pWM signals for driving a fractional order type intelligent load switch tube are adjusted based on the reference current, and primary control is achieved; the adjacent nodes exchange node information based on the communication network; replacing an actual value with a global average voltage estimated value based on information alternating current; generating a new nominal reference voltage based on the information alternating current and a fractional order parameter, wherein the fractional order parameter is obtained based on a power reference value; updating a power reference value in primary control based on the new nominal reference voltage signal; readjusting the PWM driving signal based on the updated power reference value to realize secondary control; and primary control and secondary control are combined to realize cooperative control on the fractional order type intelligent load, so that the safety and the stability of the system are improved.

This utility model relates to the field of water conservancy engineering pump station technology and discloses a seepage reduction and pressure relief structure for a pump station forebay, including: a forebay bottom slab, a seepage ditch, a pressure relief well, and a drainage hole. The forebay bottom slab is a reinforced concrete slab structure that connects to the inlet channel at the front and the pump station body at the rear. A filter layer and geotextile are laid sequentially on the lower part of the bottom slab. At the same time, the lateral extrusion of each layer is prevented by a deeply embedded retaining tooth wall around the perimeter, ensuring the stability and reliability of the filter layer. This utility model effectively reduces the seepage pressure in the pump station forebay by adopting multiple integrated measures, ensuring the stability of the station foundation seepage. The multiple safety defenses solve the problem of easy siltation and failure of traditional seepage reduction and pressure relief facilities, significantly improving the structural reliability and safety of the pump station forebay. The overall structure of the seepage reduction and pressure relief structure is simple in construction, flexible in operation, economical and efficient, and highly universal.

Embodiments of the present application provide a control system and a control method of an oxygen pressure regulating station, and relate to the technical field of oxygen pipeline pressure regulating. The system comprises a pressure acquisition unit configured to acquire a first pressure signal of a first oxygen pipeline, a second pressure signal of a second oxygen pipeline, and a third pressure signal of a third oxygen pipeline; a first control unit connected to the pressure acquisition unit, configured to receive the first pressure signal and the second pressure signal, and generate a first control signal output to the first oxygen pipeline and a second control signal output to the second oxygen pipeline; and a second control unit connected to the pressure acquisition unit, configured to receive the second pressure signal and the third pressure signal, and generate a third control signal output to the third oxygen pipeline. The system controls the oxygen pressure regulating station through two control units, and solves the gas pressure loss accident caused by the oxygen pressure regulating station out of control due to controller failure.

The application discloses an energy-saving three-phase motor with high safety performance, which comprises a motor body, a first connecting ring fixedly connected to the right side of the motor body, a second connecting ring arranged at the right side of the first connecting ring, and a plurality of U-shaped connecting plates for fixedly connecting the first connecting ring and the second connecting ring. The outer sides of the first connecting ring and the second connecting ring are jointly provided with an annular groove, and the annular groove is provided with an annular net. A driving shaft is arranged in the motor body, the right end of the driving shaft extends into the first connecting ring, and a plurality of axial fan blades are arranged on the driving shaft. A cleaning mechanism comprises two vertical plates fixedly connected to the inner sides of the first connecting ring and the second connecting ring. In actual use, the motor can realize self-cleaning of the filtering part, the self-cleaning can be performed simultaneously with the operation of the device, and the cleaning is comprehensive.

The utility model discloses a high-strength self-heat-preservation assembly type wallboard structure and an energy-saving wall body structure comprising the same, the high-strength self-heat-preservation assembly type wallboard structure comprises a wallboard body and a plurality of connecting tie pieces, the wallboard body comprises an inner side self-heat-preservation wallboard, an efficient heat preservation layer and an outer side self-heat-preservation wallboard which are sequentially arranged from inside to outside, the heat conductivity coefficient of the efficient heat preservation layer is superior to that of the inner side self-heat-preservation wall plate and that of the outer side self-heat-preservation wall plate, the fireproof grades of the inner side self-heat-preservation wall plate and the outer side self-heat-preservation wall plate both reach A2 or above, and the compressive strength of the inner side self-heat-preservation wall plate and that of the outer side self-heat-preservation wall plate both reach 3.5 MPa or above. The volume water absorption rate of the inner side self-heat-preservation wallboard and the volume water absorption rate of the outer side self-heat-preservation wallboard are both smaller than or equal to 15%, and the thickness of the outer side self-heat Fireproof and thermal insulation effects are considered; the overall bending resistance, fracture resistance and other properties are improved; the safety and the stability are greatly improved.

The utility model discloses a draw-bar box capable of improving bearing capacity, which comprises a lower box body, a hinge block is hinged to one side of the lower box body, an upper box body is hinged to one side of the hinge block, a zipper is sewn at the joint position of the lower box body and the upper box body, longitudinal reinforcing strips are fixedly connected to the outer surface of the lower box body and the outer surface of the upper box body, and the longitudinal reinforcing strips are fixedly connected to the outer surface of the lower box body and the outer surface of the upper box body. Transverse reinforcing strips are fixedly connected to the side faces of the longitudinal reinforcing strips, frameworks are fixedly embedded in the lower box body and the upper box body and comprise transverse rods and longitudinal rods, the transverse rods are fixedly embedded in the transverse reinforcing strips, and the longitudinal rods are fixedly embedded in the longitudinal reinforcing strips; bending heads are arranged at the two ends of the transverse rods and the two ends of the longitudinal rods, the bending heads are fixedly embedded in the side face positions of the lower box body and the upper box body, a fixing plate is fixedly connected to the middle position of the lower surface of the lower box body, and when the box is horizontally placed, auxiliary supporting can be achieved, deformation and dislocation are avoided, the anti-pressure capacity is improved, and combined use is facilitated.

This invention provides a repair device and method for underwater concrete layers. The repair device includes: multiple anchor assemblies fastened to the underwater concrete layer; a first conduit, one end of which extends underwater and is located above the underwater concrete layer; and a second conduit, one end of which extends underwater and is also located above the underwater concrete layer, with the second conduit spaced apart from the first conduit in a first direction. The end of the first conduit extending underwater can be used to pour concrete onto the underwater concrete layer, and the end of the second conduit extending underwater can be used to apply an underwater protective agent to the concrete pouring area. Based on the technical solution of this invention, the anchor assemblies can anchor the subsequently poured underwater self-protecting concrete layer to the underwater concrete layer. This avoids the problems of high repair costs and unstable repair effects caused by altering the properties of the concrete itself to maintain bond strength in related technologies.

The utility model provides a wet curtain structure, an air treatment device and a humidification device, and relates to the technical field of air treatment. The wet curtain structure can comprise the wet curtain body, the supporting assembly and the base, the first clamping piece is arranged at the supporting assembly, the second clamping piece is arranged at the supporting assembly, and the base and the supporting assembly are detachably connected through the first clamping piece and the second clamping piece, so that the base is conveniently detached from the supporting assembly; and therefore, the wet curtain body and the supporting assembly can be conveniently mounted and dismounted, and the wet curtain body can be conveniently cleaned and replaced.

This invention relates to the field of metallic materials technology, specifically disclosing a lightweight, high-strength seamless steel pipe for fitness equipment and its manufacturing process. The manufacturing process for the lightweight, high-strength seamless steel pipe for fitness equipment includes the following steps: 1. Normalizing a high-strength low-alloy steel pipe to obtain a pre-treated steel pipe; 2. Polishing the surface of the pre-treated steel pipe to obtain a polished steel pipe; 3. Spraying a protective liquid onto the surface of the polished steel pipe and drying it to obtain a pre-protected steel pipe; 4. Heating the pre-protected steel pipe to 100-105℃, holding it at that temperature for 20-30 minutes, and allowing it to cool naturally to obtain the lightweight, high-strength seamless steel pipe for fitness equipment. The protective liquid includes: solvent, water-based acrylic resin, film-forming aid, filler, coupling agent, processing aid, and modifier; the modifier is a compound of guar gum, guar gum, and jujube gum. This invention has the advantage of further improving the corrosion resistance of the lightweight, high-strength seamless steel pipe.

The invention discloses a software distribution and updating method based on a block chain, and relates to the technical field of software distribution, and the key point of the technical scheme comprises the following steps: obtaining complete data of software to be distributed and node identity authentication information of a block chain network; wherein the node identity authentication information comprises a node permission level, a field to which the node belongs and a node credible rating; processing the complete data of the software to be distributed to obtain a software block hash value; obtaining a node synchronization deviation value of the distributed software based on the software synchronization verification data of the distributed software in each authorized node; generating a software differentiation updating strategy of each authorized node according to the version abnormal coefficient and the node synchronization deviation value; node differentiation software updating is executed according to the software differentiation updating strategy, and updating traceability information is generated after Hash calculation and chain cascade are carried out in the software updating process, so that the effect of improving the safety and stability of a whole software distribution and updating system is achieved.

The utility model relates to the technical field of port and waterway engineering and water conservancy and hydropower engineering, and aims to provide a filling reclamation soft foundation dike structure which comprises a drainage cushion layer, a plurality of plastic drainage plates and a dike body ridge body, the drainage cushion layer is used for being laid on a soft foundation, the lower ends of the plastic drainage plates penetrate through the drainage cushion layer to enter the soft foundation, and the lower ends of the plastic drainage plates penetrate through the drainage cushion layer to enter the dike body ridge body. At least multiple layers of geotechnical reinforced sand bags are laid on the drainage cushion layer to form a bag body structure, the side, located on the upstream side, of the bag body structure is a slope, the dike body edge body is arranged on the bag body structure, and inverted filter layers are arranged on the surfaces of the sides, located on the upstream side, of the geotechnical reinforced sand bags and the dike body edge body. And land reclamation materials are filled on the inner sides of the geotechnical reinforced sand bags and the levee body prisms. The causeway structure has the advantages that the occupied area of the outer side of the causeway is obviously reduced, the land reclamation area is effectively increased, the land economic benefit is improved, and the causeway project cost is reduced.

The utility model relates to a mounting bracket and a Western blot tester, a bearing piece is arranged at the bottom of a main frame body provided with a limiting bulge, and a self-adaptive pushing mechanism composed of a pushing piece and an elastic piece is integrated on the bearing piece, when a pressing mechanism laterally presses a glass clamping plate to a sealing piece, the pushing piece is driven by the elastic force of the elastic piece pointing to the limiting bulge, and the sealing piece is tightly pressed on the glass clamping plate. The combination dynamically compensates the height tolerance of the glass clamping plate through the deformation of the elastic piece, and it is ensured that the top of the glass clamping plate is tightly attached to the lower edge of the limiting protrusion all the time. According to the mounting bracket provided by the invention, the problem of top gap leakage caused by tolerance of the glass clamping plates is effectively solved, the target liquid level height of electrophoresis liquid is accurately maintained while the hidden danger of liquid leakage is completely eradicated, and the uniform distribution of an electric field and the stability of an experiment are guaranteed.

The utility model discloses a flocked leather graining machine which comprises a fixing frame, a supporting shaft is rotatably installed at one end of the fixing frame, a guide roller is rotatably installed at one end of the supporting shaft, a motor is fixedly installed on the surface of one end of the fixing frame, a kneading barrel is rotatably installed at one end of the motor, and an annular table is arranged on the outer surface of the kneading barrel. A cavity is formed in the kneading cylinder, an arc-shaped groove is formed in the surface of the annular table, a positioning insertion hole is formed in the arc-shaped groove, an arc-shaped plate is clamped in the arc-shaped groove, limiting tables are arranged at the two ends of the arc-shaped plate, an insertion rod is fixedly connected to the lower surface of the arc-shaped plate, a positioning hole is formed in one end of the insertion rod, and a clamping groove is formed in the other end of the insertion rod. A threaded hole is formed in one end of the kneading cylinder, meanwhile, air can be blown from the interior to control heating stability, safety and stability are improved, combined use is facilitated, split maintenance is convenient, and adaptability is high.

This utility model relates to the field of new energy battery technology, and discloses a battery cell and a battery pack. The battery cell has a first direction and a second direction that are perpendicular to each other, and includes: a top cover plate with a positioning groove; an insulating component including a main body and a first protrusion, the first protrusion being located on the side of the main body away from the top cover plate, the first protrusion including a platform body with a clearance groove, the platform body being connected to the main body, the clearance groove penetrating a portion of the platform body along the second direction; and a first positioning post, one end of which passes through the positioning groove and is connected to the top cover plate, and the other end of which is connected to the main body. Along the first direction, the orthographic projection of the first positioning post on the first protrusion is at least partially located in the clearance groove, and the orthographic projection of the first positioning post on the main body is offset from the orthographic projection of the platform body on the main body. The first protrusion is a common location for the insulation component to collapse. Increasing the force exerted by the first positioning post on the insulation component at the first protrusion can reduce the collapse amplitude of the first protrusion and improve the safety and stability of the battery cell.

The utility model discloses an efficient and safe composite heat preservation device and a heat preservation wall structure comprising the same, the efficient and safe composite heat preservation device comprises an energy-saving outer protection plate, an inner side heat preservation layer and a bonding layer, the bonding layer is located between the energy-saving outer protection plate and the inner side heat preservation layer, the compressive strength of the energy-saving outer protection plate reaches 0.3 MPa or above, and the compressive strength of the bonding layer reaches 0.3 MPa or above. The fireproof grade of the energy-saving outer protection plate reaches A2 or above, the thickness of the energy-saving outer protection plate is not smaller than 50 mm, the energy-saving outer protection plate is made of A-grade fireproof organic and inorganic composite materials, the inner side heat preservation layer is made of efficient heat preservation materials with the heat conductivity coefficient lower than that of the heat preservation materials forming the energy-saving outer protection plate, and the efficient and safe composite heat preservation device further comprises at least one reinforcing net component. And the reinforcing net component is arranged inside and / or on the side surface of the energy-saving outer protective plate. The efficient and safe composite heat preservation device is safe in fire protection, flame-retardant and fireproof, and also has an excellent heat preservation effect. The overall structural strength is further enhanced, and the safety and stability of the thermal insulation wall structure are greatly improved.