37results about How to "Reduced insulation performance" patented technology

The utility model discloses a dustproof heat preservation double-layer cover for a tire vulcanizing device, which comprises a bottom plate, a supporting plate arranged on the outer wall of the top of the bottom plate and an electric sliding table arranged on the outer wall of one side of the supporting plate, and further comprises a shell arranged on a sliding piece of the electric sliding table, and a dust wiping assembly is arranged on the outer wall of the top of the shell. And a driving assembly is mounted on the inner wall of the top of the shell, and a partition plate is mounted on the inner wall of the shell. The shell can cover the outer part of the tire vulcanizing device, the heat preservation layer formed by the plurality of first heat preservation plates and the plurality of second heat preservation plates plays a heat preservation role on the tire vulcanizing device, the heat preservation effect is the best at the moment, and when the heat preservation effect is reduced to a certain degree according to the tire requirement or the environment temperature requirement, the heat preservation effect is good. The multiple first heat preservation plates can be driven to rotate at the same time through the driving assembly, the first heat preservation plates rotate to drive the two corresponding second heat preservation plates to rotate, a certain gap is formed between every two adjacent second heat preservation plates, and then the heat preservation effect is reduced.

The utility model discloses a kind of air leakage prevention structures of lead-free glass sealing titanium cup, including container mechanism and detection mechanism, the container mechanism includes inner bag, cup cover of sleeve connection in the outer side of the inner bag, handle connected with the outer wall of the cup cover, screw cap is rotated with the top end of the inner bag, detection mechanism, the detection mechanism includes the heat preservation cavity formed between the inner bag and cup cover. In the utility model, once holder feels heat preservation duration, heat preservation effect reduces, holder can add a small amount of clean water in cambered surface position, then extrude push rod to the inside of cup cover, then rubber plug extrudes the air in heat preservation cavity, air surges along the outer wall of inner bag, then overflow from cup cover top air leakage position, overflow phenomenon specifically shows, air leakage position bubbles, then holder finds air leakage position, can be targeted for repair, avoid resources being wasted, and sustainable development environmental protection concept is combined.

The transformer device and the transformer equipment provided by the embodiments of the present disclosure include: a first insulating substrate having a groove; a magnetic core is contained in the groove, and the groove is filled with a resin material; an upper conductive trace structure includes a second insulating substrate, a first side of the upper conductive trace structure is formed with an upper conductive trace, and the first side of the upper conductive trace structure is adhered to a first side of the first insulating substrate through a first adhesive layer; a lower conductive trace structure includes a third insulating substrate, a first side of the lower conductive trace structure is formed with a lower conductive trace, and the first side of the lower conductive trace structure is adhered to a second side of the first insulating substrate through a second adhesive layer; a first via structure penetrates through the upper conductive trace structure, the lower conductive trace structure and the first insulating substrate, and a conductive material is arranged on a sidewall of the first insulating substrate exposed due to formation of the first via structure to form a first conductive via structure.

The utility model relates to the technical field of wire wrapping machines, and discloses a paper-covered copper wire wrapping machine, which comprises a wrapping machine, the top surface of the wrapping machine is fixedly connected with a dustproof cover, and the bottom edge of the front surface of the dustproof cover is fixedly connected with a dustproof mechanism. According to the paper-covered copper wire wrapping machine, through the arrangement of the dustproof mechanism, when the paper-covered copper wire wrapping machine needs to be used, a moving window is pushed into deep grooves in the two sides in a sliding rail through pushing and pulling of a handle, the opening area is increased, after an internal copper wire is installed, the moving window is pulled out and folded, and then an internal machine can be isolated from the outside; the movable window is made of glass, so that the internal winding condition can be observed through the movable window, the effect of conveniently preventing dust from entering the device is achieved, and the problems that the dust settles on a paper-covered copper wire which is being wrapped, the uniformity and integrity of an insulating layer are damaged, the insulating performance is reduced, partial discharge is caused and the like are solved; the service life of equipment is shortened and potential safety hazards are increased.

The invention relates to the technical field of batteries, and discloses a pole column and a forming process thereof, a battery cell cover plate assembly and a battery cell. The pole forming process comprises the following steps: stamping and blanking a conductive composite board along a Z direction to obtain a pole body; wherein the pole body comprises a first conductive section and a second conductive section; wrapping and limiting the first conductive section, and extruding and expanding the local part of one end, far away from the first conductive section, of the second conductive section along the Z direction, so that an annular flange is formed on the side wall of the second conductive section on the X-Y plane; stamping and stretching the local part of the annular flange to enable the free end of the annular flange to form a pole turnup; wherein the pole turnup comprises a first turnup and a second turnup which are connected with each other, the first turnup extends towards the direction far away from the second conductive section along the Z direction, the first turnup and the first conductive section are arranged at an interval, and the second turnup extends towards the direction far away from the first conductive section. The pole prepared by the invention can reduce heat transferred to the upper plastic, and the insulating property of the pole is guaranteed.

The invention relates to the technical field of heat energy storage, in particular to a low-liquid-level fused salt storage tank for a photo-thermal power station. A low-liquid-level device is arranged at the position, corresponding to the molten salt pump, of a bottom plate of the tank body, and the low-liquid-level device comprises an annular-groove-shaped connecting pipe assembly and an annular-groove-shaped sleeve. A main body of the connecting pipe assembly is embedded in the foundation, the end, provided with an opening, of the connecting pipe assembly is fixedly connected to the peripheral wall, provided with the through hole, of the bottom plate, so that a low-liquid-level area communicated with the interior of the tank body is formed in the groove of the connecting pipe assembly, and a suction pump shaft of the molten salt pump extends into the low-liquid-level area. The sleeve is arranged outside the pipe connecting assembly in a sleeving mode and fixed into the foundation in an embedded mode so that a space for the pipe connecting assembly to move can be formed between the sleeve and the pipe connecting assembly. According to the low-liquid-level fused salt storage tank, the technical problem of dead salt in a low-liquid-level area is solved on the premise that relative movement between the bottom of the storage tank and a foundation is not affected.

The utility model discloses an electric control box assembly and an air conditioner with the electric control box assembly, and the electric control box assembly comprises an electric control box which is provided with a wire outlet; the insect-proof pad is arranged in the wire outlet, the insect-proof pad is provided with a plurality of comb tooth parts, the comb tooth parts are arranged at intervals in the axial direction of the wire outlet, and each comb tooth part is provided with a plurality of wire clamping seams. According to the electric control box assembly provided by the utility model, the insect-proof pad is arranged in the wire outlet, the insect-proof pad is provided with the plurality of comb tooth parts, the comb tooth parts are provided with the plurality of wire clamping seams, a motor wire can be arranged in the wire clamping seams in a penetrating manner, and the comb tooth parts can block the notch at the wire outlet, so that the area of the notch at the wire outlet is reduced, and insects are prevented from entering the electric control box from the wire outlet; the hidden danger of short circuit can be reduced, insect body fluid is prevented from reducing the insulation performance of the circuit board, the performance of components in the electric control box is guaranteed, the failure of the components is avoided, the fire risk and the electric shock risk are reduced, the potential safety hazard is reduced, and the overall reliability, stability and safety of the electric control box assembly are improved.

A sealing material for a power storage device is provided with a base material layer, a barrier layer, an adhesive layer, and a sealant layer in this order. In the sealing material for a power storage device, the adhesive layer is a thermally adhesive resin layer or an adhesive layer, and when the adhesive layer is the thermally adhesive resin layer, the hydrogen sulfide transmission coefficient of a laminate of the thermally adhesive resin layer and the sealing layer is 1.1 * 10 <-9 > cc * mm / cm2 * sec * cmHg or more and less than 1.0 * 10 <-8 > cc * mm / cm2 * sec * cmHg, and the hydrogen sulfide transmission coefficient is 0.1 * 10 <-8 > cc * mm / cm2 * sec * cmHg or more and less than 1.0 * 10 <-8 > cc * mm / cm2 * sec * cmHg or more and less than 1.0 * 10 <-8 > cc * mm / cm2 * sec * cmHg. When the adhesive layer is the adhesive layer, the hydrogen sulfide transmission coefficient of the sealing layer is at least 1.1 * 10 <-9 > cc * mm / cm < 2 > * sec * cm < Hg > and less than 1.0 * 10 <-8 > cc * mm / cm < 2 > * sec * cm < Hg >.

The invention discloses an insulator for a direct current converter transformer and an online monitoring method thereof, and relates to the technical field of insulators. According to the insulator for the direct current converter transformer, the insulator body and the connection structure are internally integrated with a multi-stage state monitoring system comprising a first-stage sensing unit, a second-stage sensing unit and a third-stage sensing unit; according to the invention, three types of key state data of internal mechanical stress of the insulator, the connection state of the first metal accessory and the second metal accessory and the overall temperature distribution can be synchronously acquired in real time, real-time monitoring of the insulator and multi-dimensional comprehensive information acquisition are realized, early warning is realized based on the multi-dimensional comprehensive information, and the reliability of the insulator is improved. According to the method, preliminary early warning can be carried out according to single data, meanwhile, time-space alignment and comprehensive judgment can be carried out on multi-dimensional data, high-level fault early warning is carried out, the stability and reliability of the insulator are improved, and sudden faults are reduced.

The utility model discloses a heating tube sealing structure and baking tray, aim at solving the existing heating tube seal not thoroughly, the assembly stability is poor and so on. The structure contains heating disc, its inside is equipped with magnesium oxide filler, and the first, second heating tube cold needle is projected with respectively two ends, and there is the heating wire that penetrates heating disc and is wrapped by magnesium oxide filler between two cold needles. In addition, still be equipped with first conducting rod subassembly and second conducting rod subassembly, two respectively with the both ends sealed connection of heating disc. This design through both ends conducting rod subassembly and the close seal of heating disc, can bear the gas expansion pressure in pipe, prevent gas leakage, maintain the pressure balance in pipe, enhance the sealing reliability, effectively solve the sealing problem caused by gas expansion. Meanwhile, the structure reduces the dependence on the size precision of single component, even if the size error exists in component processing, can realize good sealing connection, reduces the unstable situation of assembly caused by size deviation, improves the stability and success rate of assembly.

This invention discloses a high-performance meta-aramid / mica composite insulating paper and its preparation method. The paper is formed by wet papermaking and hot pressing of a mixed slurry composed of meta-aramid chopped fibers, meta-aramid precipitated fibers, and mica flakes. The composite insulating paper has a thermal decomposition temperature ≥425℃, tensile strength ≥52N / mm, tear strength ≥2.2N / mm, and voltage breakdown strength ≥13.8kV / mm. The mass ratio of chopped fibers to precipitated fibers is (50~80):(50~20). The amount of mica flakes added is 5wt%~10wt% of the total mass of the two aramid fibers. The hot pressing adopts a segmented hot pressing process of "low-temperature pre-pressing - medium-temperature strengthening - high-temperature setting". By controlling the key parameters of the precipitated fibers and optimizing the ratio of chopped fibers to precipitated fibers and the proportion of mica flakes added, the paper is prepared through processes such as raw material pretreatment, graded mixing and dissociation, wet papermaking, and segmented hot pressing. Advantages: Through multi-parameter coordinated control and process optimization, the technical bottlenecks such as the mechanical and insulation properties of existing aramid composite insulating paper and insufficient thermal stability have been solved.

The utility model relates to the technical field of electrified railway application, in particular to a multifunctional anti-bird cover for an electrified railway, which comprises a first mounting sheath and a second mounting sheath which are arranged oppositely, and the sides, close to each other, of the first mounting sheath and the second mounting sheath are detachably connected. The first mounting sheath and the second mounting sheath are hollow, a mounting sheath cavity is formed between the first mounting sheath and the second mounting sheath, and one end of the first mounting sheath extends forwards to be provided with an arc-shaped cover body. According to the utility model, the structure is novel, the design is ingenious, the moving or staying frequency of birds on the umbrella skirts of the insulator chain is reduced, the amount of bird droppings on the umbrella skirts of the insulator chain is reduced, the influence of the bird droppings on the insulation performance of the insulator chain is reduced, the reliability and safety of an overhead line on an electrified railway are improved, and a certain shielding effect is achieved; and external corrosion is reduced, so that the multi-functional effect is achieved.

The utility model discloses a bus duct convenient to assemble, which relates to the technical field of bus ducts and comprises a bus duct body, and an assembling mechanism is arranged in the bus duct body. According to the utility model, through the arrangement of the assembling mechanism, the copper bar can be conveniently assembled in the bus duct, the bus duct can be conveniently installed on a wall, and the bus ducts can be conveniently assembled and connected together, and in the use process, the situation that the copper bar cannot be conveniently assembled in the bus duct, so that the bus duct is convenient to assemble and connect can be avoided. The problems that the contact resistance is increased, the connection part is heated and the current-carrying capacity of the bus duct is reduced due to the fact that the copper bar and the bus duct are not tightly connected due to the fact that the copper bar and the bus duct are tightly connected due to the fact that the contact resistance is too large are solved, the bus duct assembling tightness is guaranteed, and the situation that the bus duct is installed on a wall and is complex is avoided. Therefore, the situation that the bus duct needs to be installed on the wall in a long time is avoided, and the installation convenience of the bus duct is ensured.

The invention belongs to the technical field of heating devices, and particularly relates to an electric shock and incrustation prevention water heater which comprises a hot water storage tank, and a heating device is detachably arranged in the hot water storage tank; the heating device comprises a shell and a heating element located in the shell. The heating element and the interior of the shell form a sealed cavity, and the cavity is filled with insulating temperature conducting liquid; the storage bin is located on one side of the hot water storage tank; and the storage bin is communicated with the cavity through a connecting pipe. The shell is arranged in the hot water storage tank, the insulating temperature conduction liquid and the heating element are arranged in the shell, the heating element and water are isolated through the insulating temperature conduction liquid, the electrified heating element does not make contact with the water at all, and the water heater is divided into the two insulating isolation units including the electrified unit and the non-electrified unit. The electric leakage risk is thoroughly eliminated from the physical principle; and the insulating temperature-conducting liquid has the properties of insulation and heat conduction.

This invention relates to the field of motor technology, and in particular to a carbon brush cleaning and cooling device for motors, comprising a fan, at least one air duct, and a fixing assembly. The air duct is mounted above the motor carbon brush assembly, with one end serving as an air inlet and the other end closed. Several ventilation holes facing the carbon brushes are provided at the bottom of the air duct. The fan's outlet is connected to the air inlet to supply cooling air to the air duct. The fixing assembly is connected to both the air duct and the motor body, detachably securing the air duct to the motor body. This invention features a simple structure, small footprint, and detachable installation on the motor body via the fixing assembly, requiring no modification to existing equipment. It is suitable for various exciters, back-pressure generators, and other motors, offering convenient installation and maintenance, and providing both cleaning and cooling functions.

This utility model discloses a battery, comprising: a casing having a receiving cavity, the casing having a lead-out wall surface, the lead-out wall surface having a first through hole communicating with the receiving cavity; a battery cell disposed within the receiving cavity, the battery cell including a tab assembly; a terminal assembly including a terminal body, a connecting piece, and an insulating and sealing connection layer, the connecting piece and the lead-out wall surface being welded together to form a solder mark, the connecting piece having a second through hole, the first through hole and the second through hole corresponding to each other, the terminal body being connected to the tab assembly, the terminal body including a sheet portion and a pillar portion, the pillar portion passing through the first through hole and the second through hole, the sheet portion and the pillar portion being connected, the insulating and sealing connection layer being disposed between the sheet portion and the connecting piece; and an insulating member disposed between the tab assembly and the casing, wherein, in the length direction of the battery, the orthographic projection of the insulating member on the lead-out wall surface at least partially covers the solder mark. The battery of this utility model embodiment not only has good sealing performance and simple manufacturing process, but also high energy density.

The invention belongs to the technical field of electric heaters, and particularly relates to a preparation method of a long-life high-temperature magnesium oxide powder heating pipe. The method comprises the steps that an electrothermal alloy wire is pre-oxidized for 1-3 h in an oxygen-containing atmosphere at 900-1100 DEG C, a compact oxidation film is generated on the surface of the electrothermal alloy wire, and a pre-oxidized electrothermal alloy wire is obtained; the pre-oxidized electrothermal alloy wire is arranged in the axial direction of a metal protective sleeve, the metal protective sleeve is filled with fused magnesia powder with the purity larger than or equal to 96 wt%, then diameter shrinkage is conducted on the metal protective sleeve, and the fused magnesia powder is compacted and wraps the pre-oxidized electrothermal alloy wire; carrying out curing heat treatment on the reduced metal sheath tube; annealing is carried out on the processed metal protective sleeve; and cleaning the two ends of the annealed metal sheath pipe to obtain the high-temperature magnesium oxide powder heating pipe.

The utility model discloses a thermal insulation storage device for concrete block production, which relates to the technical field of concrete block production and comprises a supporting table, supporting columns are arranged on the bottom surface of the supporting table, and supporting legs are arranged on the bottom surfaces of the supporting columns; a bearing plate and an inverted-U-shaped plate are arranged on the upper side of the supporting table, and the bottom face of the bearing plate is connected with the supporting table through a plurality of evenly-distributed buffer springs. A slide way is arranged on the top surface of the bearing plate; two sliding grooves are formed in the top face of the supporting table, sliding rails are arranged in the sliding grooves, and second sliding blocks are arranged on the two sliding rails. The two bottom faces of the inverted-U-shaped plate are fixedly connected with the two second sliding blocks correspondingly. According to the actual specifications of concrete blocks, the distance between the partition plates is adjusted, the positions of the partition plates are fixed through the limiting rods, the limiting holes and the limiting grooves, the concrete blocks are stacked on the bearing plate, the buffer springs at the bottom of the bearing plate can prevent the blocks from vibrating in the placing process, the situation that the blocks fall off is avoided, and then the blocks are protected.

The utility model discloses a dust-free high-flexibility cable sheath, which belongs to the technical field of cables, and comprises a buffer layer, the inner wall of the buffer layer is connected with a filling layer in a bonding manner, the filling layer is made of polyester fiber materials, and the inner wall of the buffer layer is connected with an isolation cover in a bonding manner; the inner wall of the isolation cover is fixedly connected with a cable, and the isolation cover is made of a polyethylene material. The surface of the buffer layer is connected with a reinforcing layer in a bonding manner, and the buffer layer is made of a polyurethane foam material; a fireproof layer is connected to the surface of the reinforcing layer in an adhesive mode, and the reinforcing layer is composed of a high-strength aramid fiber woven mesh. A shielding layer is connected to the surface of the fireproof layer in an adhesive mode, and the fireproof layer is made of mica tape materials. The surface of the shielding layer is bonded with a moisture-proof layer. According to the dust-free high-flexibility cable sheath, the dust-proof wear-resistant layer made of polytetrafluoroethylene is arranged, so that the influence of surface dust on a cable can be effectively avoided, the working environment of the cable can be effectively maintained, and data transmission is ensured to be error-free.

The utility model belongs to refrigerated container stereoscopic stacking machine warehouse shelf technical field discloses a kind of shelf structure for refrigerated container stereoscopic stacking machine warehouse, including at least two groups of parallelly arranged door-shaped frames, horizontal connecting pieces, goods bearing parts, track fixing parts and side wall supporting parts;Door-shaped frame is by vertical stainless steel square tube and top horizontal stainless steel square tube welding composition, horizontal connecting piece is stainless steel angle steel, horizontal connection vertical stainless steel square tube on adjacent door-shaped frame, goods bearing part is shelf crossbeam, two ends are fixed on vertical stainless steel square tube on door-shaped frame, track fixing part includes stacking machine ground rail crossbeam and overhead rail crossbeam, side wall supporting part is lengthened cross bracing, the bottom of door-shaped frame is equipped with footing.The utility model is by using integration shelf and track design, to reduce space occupancy, again with the cooperation of pre-buried positioning pin hole and adjustable footing, track and shelf synchronous calibration can be realized, to reduce maintenance cost.

The utility model discloses an electric control box assembly and an air conditioner with the electric control box assembly, and the electric control box assembly comprises an electric control box which is provided with a wire outlet; and the insect prevention brush is arranged at the wire outlet. According to the electric control box assembly provided by the utility model, the electric control box is provided with the wire outlet, the insect prevention brush is arranged at the wire outlet, and the bristles of the insect prevention brush can block the notch at the wire outlet, so that the area of the notch at the wire outlet is greatly reduced, insects are prevented from entering the electric control box from the wire outlet, and the hidden danger of short circuit can be reduced; the insect body fluid is prevented from reducing the insulation performance of the circuit board, the performance of components in the electric control box is guaranteed, the failure of the components is avoided, the fire risk and the electric shock risk can be greatly reduced, the potential safety hazard is reduced, and the overall reliability, stability and safety of the electric control box assembly are improved.

The invention discloses a high-flexibility torsion-resistant control cable for a wind power generation system, belongs to the technical field of torsion-resistant cables, and is used for solving the problem that in the prior art, a control cable oriented to the working condition characteristics of the wind power generation system is poor in flexibility. In order to solve the technical problems in the prior art that the flexibility and the reciprocating torsion resistant cycle life in a wide temperature range from low temperature to high temperature need to be further improved, the cable specifically comprises a cable core, and a non-woven fabric layer, a braid layer, an inner sheath layer, a torsion resistant layer and an outer sheath layer which are sequentially coated outside the cable core, and the cable core comprises at least one central core wire and a plurality of peripheral core wires. According to the invention, the non-woven fabric layer, the braid layer, the inner sheath layer, the torsion-resistant layer and the outer sheath layer are sequentially arranged outside the wire core after a plurality of strands of annealed soft copper conductors are matched with the SZ to form the cable, so that the crack resistance and wide temperature range stability of the cable material are improved, and high flexibility and long torsion-resistant service life are both considered under the working condition of-40 DEG C to 105 DEG C; and the bending rigidity is kept in a controllable window.

This invention relates to the field of solid solution alloy technology, specifically disclosing a tungsten-based solid solution alloy, its preparation method, and its applications. The tungsten-based solid solution alloy includes a matrix and alloying elements dissolved in the matrix, wherein the matrix is ​​metallic tungsten; and the alloying elements include hafnium, tantalum, and boron. This invention utilizes the homogeneity, low melting point, and strong capillary diffusion ability of the Hf-Ta-B amorphous alloy to pre-prepare its amorphous powder, which is then mixed with pure W powder to form the target alloy. The raw material powders are uniformly mixed by ball milling, and then the W-based solid solution alloy sintered body is prepared using conventional hot pressing sintering technology at a certain sintering temperature (slightly higher than the melting point of the Hf-Ta-B amorphous alloy). Finally, high-energy-rate forging further optimizes the composite solid solution strengthening of Hf and Ta, as well as the grain-refining strengthening effect of B, ultimately obtaining a fine-grained W-based rare-grain solid solution alloy with good composition and microstructure homogeneity, resulting in an alloy with both high thermal conductivity and excellent high-temperature mechanical properties.

This invention discloses a fixing structure for a high-power frameless motor used in humanoid robots, relating to the field of frameless motor technology. It includes: a stator assembly with positioning blocks fixed to both end faces of the stator assembly, two positioning blocks on each end face; and a rotor assembly housed within the stator assembly. This invention employs a structure with a double-disc body, double rotating rings, and a connecting seat. Relying on the positioning blocks and positioning grooves, and the protrusions and grooves forming a double alignment design, combined with a locking mechanism, it can quickly achieve concentric positioning of the stator assembly and rotor assembly, while effectively limiting radial movement of the rotor assembly. Furthermore, the connecting mechanism adopts an adjustable clamping structure design, which can adapt to output shafts of different sizes, ensuring coaxiality between the output shaft and the stator and rotor assemblies. This eliminates the need to replace the motor body or customize an adapter flange, significantly improving the equipment's versatility and adaptability to different operating conditions.

The application discloses a preparation method of environment-friendly aerogel particles for aerogel mortar, which comprises the following steps: placing wet gel particles and a drying medium in a drying kettle; the wet gel is composed of a gel skeleton and an intraparticle solvent, the intraparticle solvent is single or mixed alcohol, and the pore size is micro-nano level; the drying medium is single or mixed alcohol; and the purpose of removing the residual impurities in the aerogel particles is achieved by replacing the residual alcohol and by-product gas in the aerogel pores with an inert gas with a free path greater than the nanometer pore size of the aerogel. The prepared silica aerogel particles have remarkable advantages in environmental protection, and the low thermal conductivity, light weight, heat insulation, hydrophobicity and other characteristics make the silica aerogel particles have wide application prospect and environmental protection benefits in the field of environment-friendly mortar in the building field.

The invention belongs to the technical field of flushing fluid for an electric automobile cooling system, and particularly relates to low-conductivity flushing fluid for the electric automobile cooling system as well as a preparation method and application of the low-conductivity flushing fluid. The flushing fluid is prepared from the following components in parts by mass: 74.04 to 79.88 percent of deionized water, 20 to 25 percent of an alcohol solvent, 0.05 to 0.30 percent of a nonionic surfactant, 0.05 to 0.40 percent of a chelating agent, 0.005 to 0.05 percent of an anticorrosive agent, 0.001 to 0.02 percent of a silicon-based defoaming agent and 0.01 to 0.20 percent of a buffering agent, and the silicon-based defoaming agent exists in the form of a nano dispersion. The invention relates to a nanotechnology low-conductivity flushing fluid which is based on an ethylene glycol solvent system with the same polarity as a cooling liquid and has the advantages of cleaning power, low conductivity, corrosion resistance and foam inhibition.

The power transformer comprises a shell, a plurality of parallel annular silicon steel sheets are distributed in the shell, and coils are wound on the two sides of each silicon steel sheet; an air outlet is formed in the top of the shell, and a fan is arranged at the air outlet; side air inlets are formed in the two sides of the shell, and a lower air inlet is formed in the bottom of the shell; compared with the prior art, by optimizing the air duct design, introducing a targeted heat dissipation strategy and an innovative linkage self-cleaning air volume adjusting mechanism, the problems that a traditional transformer is low in heat dissipation efficiency, prone to dust accumulation, inconvenient to maintain and the like are effectively solved, the operation reliability of equipment is remarkably improved, the service life of the equipment is remarkably prolonged, and the operation convenience of the equipment is remarkably improved.

The invention discloses a box-type transformer substation, and relates to the technical field of transformer substations, the box-type transformer substation comprises a box-type transformer substation shell and further comprises a ventilation control mechanism, the ventilation control mechanism is arranged in the box-type transformer substation shell, the ventilation control mechanism comprises main ventilation openings formed in the left side and the right side of the box-type transformer substation shell, and the interior of the box-type transformer substation shell is fixedly connected with a limiting frame; a ventilation control plate is slidably inserted into the limiting frame, a supporting plate is fixedly connected to the interior of the box transformer substation shell, a corrugated copper pipe is fixedly connected to the upper surface of the supporting plate, a connecting lantern ring is fixedly connected to the top end of the corrugated copper pipe, and the connecting lantern ring is fixedly connected to the top end of the ventilation control plate; and a ventilation hole matched with the main ventilation opening is formed in the surface of the ventilation control plate, a guide column is fixedly connected to the upper surface of the supporting plate, and the guide column is inserted into the corrugated copper pipe, so that the problem that rainwater is poured into the ventilation opening or the interior of the ventilation opening is frozen is solved.

The utility model relates to a wall bushing technical field, concretely is a kind of wall bushing with insulating protective pad, including bushing body.This one wall bushing with insulating protective pad, when cable or pipeline needs to pass through wall bushing, it is from second insulating protective pad inner wall and enters.This time, since installation port is connected with ventilation room, with the rise of air pressure in ventilation room, elastic air bag will gradually expand, and tightly wrap the cable passing from all directions.This wrapping mode is different from rigid fixing, it has certain elasticity, can firmly fix cable, prevent cable from loosening, displacement due to external force in bushing, influence electrical transmission, and will not cause damage to cable skin because of excessive extrusion.

The utility model relates to the technical field of flange heat preservation sleeves, in particular to a mesoporous material flange heat preservation sleeve. According to the technical scheme, the heat preservation sleeve comprises a fixing sleeve, a heat preservation sleeve body and a supporting sleeve, a waterproof layer is fixed to the outer surface of the heat preservation sleeve body, a heat preservation layer is fixed to the inner wall of the heat preservation sleeve body, the fixing sleeve is fixedly embedded into the heat preservation sleeve body, the inner wall of the fixing sleeve communicates with a connecting sleeve, and the inner wall of the connecting sleeve communicates with the supporting sleeve; a sleeve groove is formed in the inner wall of the supporting sleeve, a mounting groove is formed in the inner wall of the heat preservation sleeve body, a fixing son sticker is sewn to the inner wall of the mounting groove, a fixing mother sticker is pasted to the inner wall of the fixing son sticker, a fixing frame is fixed to the inner wall of the fixing mother sticker, and a through groove is formed in the inner wall of the fixing frame; and a connecting mother sticker is sewn to the inner wall of the through groove, a connecting son sticker is pasted to the inner wall of the connecting mother sticker, and a connecting frame is fixed to the inner wall of the connecting son sticker. The utility model is suitable for flanges with different sizes.