72results about How to "With insulation function" patented technology

The invention provides a novel fuel tank for an automobile. The fuel tank comprises a tank body, a fuel filler, a fuel return pipe, a fuel supply pipe, a fuel pump, a gasoline steam output pipe and a fuel level sensor, wherein the tank body comprises an inner layer and an outer layer, the fuel pump is mounted at the lower part in the tank body and connected with the fuel supply pipe, the fuel level sensor is mounted at the top in the tank body, the fuel return pipe is mounted on the left side of the fuel supply pipe, the gasoline steam output pipe is mounted on the left side of the fuel return pipe, a check valve is mounted in the gasoline steam output pipe, the fuel filler is mounted on the right side of the fuel supply pipe, a fuel tank cover is mounted at the top of the fuel filler, and the fuel filler is mounted at the top of the tank body. The fuel tank has the benefits as follows: a vacuum interlayer is arranged between the outer layer and the inner layer, has insulation and heat isolation functions, can prevent fuel from freezing and can play roles in preventing burning of the fuel tank and explosives due to fuel temperature rise; the fuel tank is simple in structure, convenient to use, higher in safety, convenient to mount and capable of reducing environmental pollution.

The invention relates to a steel frame greenhouse technology for peach tree in low-latitude plateau area. The technology is characterized in that steel pipes are welded to form a semicircular steel frame greenhouse to be fixed to the peach tree farmland; a plastic greenhouse film and an inspect proof nets cover the frame; a nonwoven fabric covering surface is hung in the greenhouse; the plastic greenhouse film and the nonwoven fabric are contracted and stretched to realize the control to the temperature in the greenhouse of the peach tree at different growth periods and under the changeful air temperature condition at the low-latitude plateau area; meanwhile, an underground irrigating device, a novel double-layer ground film and a special fruit bag and other technologies are adopted, thus the damage factor under the natural condition is removed, the natural growth state of the peach tree is remained to the maximum, and the quantity of applied pesticides and chemical fertilizers is greatly decreased; the water for irrigating is about 40% that under the common planting condition, and the output is more than 150% that under the common planting condition; in addition, the peach quality is far more than that of the common peach, and the market price is 5 times that of the common peach.

The invention relates to a lithium battery pack fixing device which comprises a support with a centre hole and a discoid insulating shell, wherein the discoid insulating shell is arranged outside the support, is also provided with a centre hole and consists of a left shell and a right shell; axial grooves are arranged at the external rim of the support and embedded with axial raised lines arranged on the side wall of the insulating shell; and the left shell and the right shell are fixedly connected with each other by means that bolts penetrate through the raised lines and spud piles arranged around the centre hole, the spud piles are also used for fixing a battery protection board, and an elastic washer is arranged on the battery protection board so as to ensure the axial stability of the protection board. The lithium battery pack fixing device is simple in structure and beneficial to the heat dissipation of a battery pack and can be used for effectively enhancing the stability and safety of the battery pack and the protection board and prolonging the service life of the battery pack.

The invention relates to the technical field of outdoor tents, and discloses an inflatable outdoor tent with a heat insulation function convenient to fix and unfold. The inflatable outdoor tent with the heat insulation function convenient to fix and unfold comprises an outdoor tent body, an air inflation channel is fixedly installed on the right side of the outdoor tent body, ventilation windows are movably connected to the left side and the right side of the outdoor tent body through zippers, stabilizing rods are movably connected to the left side and the right side of the opposite sides of two connecting bases, and front faces and back faces of the left side and the right side of the outdoor tent body are each fixedly connected with a first bearing pedestal. According to the inflatable outdoor tent with the heat insulation function convenient to fix and unfold, the outdoor tent body is unfolded, the stress area during fixing is increased, a user can conveniently fix the outdoor tentbody, the fixing is stable, the outdoor tent body is prevented from being unfolded and scraped away by strong wind, the efficiency during fixing is improved, manpower and material resources are saved,the inflatable outdoor tent is convenient to use, and the inflatable outdoor tent is suitable for various situations.

The invention discloses high twig shears applied to a charged high-voltage line. The high twig shears comprise a tool rest, a static blade and a moving blade, the static blade is fixed on the tool rest, and the moving blade forms a hook-shaped shear mouth facing downwards; the tool rest is provided with a power transmission mechanism, a worm is fixed on an output shaft of the power transmission mechanism, a worm gear structure matched with the worm is arranged on the back of the moving blade, and insulating stay cords are connected to a big rotating wheel and a small rotating wheel respectively; a steering block is hinged to the lower portion of the tool rest through a draw-in bolt to form a tool rest steering mechanism; an insulating rod is connected to the lower portion of the steering block. According to the high twig shears, the problem that traditional high twig hears cannot be used on the condition that a high voltage line is charged is solved, operation can be conducted without power interruption, and the reliability of mains supply is guaranteed; meanwhile, the trimming range is widened, and the labor efficiency is improved.

The invention discloses a grounding mechanical locking device for the maintenance test of electric equipment, which comprises a grounding support fixed on a grounding flat iron of a substation, an insulating protective shell and a locking strip provided with a lock hole, and the insulating protective shell is covered on the grounding support The upper part is fixedly connected with the grounding support through the locking bar; the grounding support is provided with a ground threaded hole and a connecting groove for fixing the grounding wire connector; the insulating protective shell is provided with a lock, a locking bar channel and a grounding wire The lock is located at the opening end of the lock bar channel; the lock bar respectively passes through the connecting groove and the lock bar channel and connects the lock buckle and the lock hole correspondingly. Effectively prevent grounding wires from loosening and grounding devices from being misoperated, improve the accuracy of experimental data, and ensure personal and property safety.

The invention discloses a ceramic composite electronic cigarette heater which comprises a heating component and a ceramic wrapping layer. The heating component is an electric heating component, a main body of the heating component is embedded in the ceramic wrapping layer, and the heating component is led outside the ceramic wrapping layer through wiring pins. The heater is a typical tubular heater, the heating component is embedded in the tubular middle segment main body portion, and the ceramic wrapping layer on the middle segment main body portion is a ceramic tube provided with internal micro holes. One or more ends of the heater are connected with dense connection pieces. The dense connection pieces can be metal connection pieces or ceramic connection pieces, and when the connection pieces are metal connection pieces, the connection pieces are arranged at the ends of the tubular heater and also serve as wiring pins of the heating component; the heater can also be a spiral heater, an electric heating wire wound in a spiral mode serves as the heating component, and the ceramic wrapping layer is a coated ceramic thin layer arranged on the surface of the electric heating wire in a wrapped mode. The heating component wrapped by ceramic can achieve functions of being insulating with other components, liquid guidance, high temperature resistance and the like.

The invention relates to an electromagnetic core with an extension edge insulating layer, comprising an electromagnetic core and an insulating layer, wherein an insulating layer is also arranged on the outer side end surface of the electromagnetic core, the outer side surface insulating layer is mutually connected with an inner side surface insulating layer, the electromagnetic core is provided with a plurality of grooves, an insulating layer is arranged in each groove and extends outwards to form an extension edge, and the insulating layer extension edge partly covers the end surface of the electromagnetic core. Compared with the prior art, the invention has a structure that the end surface insulating layers are arranged at both ends of the electromagnetic core, the insulating layers of middle grooves form an extension surface through thermal forming, and the extension surface is tightly combined with the end surface insulating layers to enable a contact region of a chip of a motor, a generator or a transformer with an electromagnetic wire to fulfill an insulating function, thereby saving electromagnetic wires, reducing the length of a useless end of an electromagnetic winding, enhancing the efficiency of the motor, the generator and the transformer, and lowering the cost. The invention is suitable for asynchronous motors, DC motors, synchronous motors, series excited machines, servo motors, generators and transformers.

The invention relates to an internally-arranged protection device type lithium battery. The internally-arranged protection device type lithium battery comprises a battery cover plate, a battery shell and a coiling core located in the battery shell, wherein the coiling core is formed by overlapping and winding a negative pole piece, a membrane and a positive pole piece; a fixed ring, an insulating cover plate and an insulating gasket are sequentially arranged between the battery cover plate and the coiling core in a close fitting manner; the insulating gasket is used for tightly pressing the coiling core; the fixed ring is welded on the inner wall of the battery shell; the lithium battery further comprises a first negative pole current collector, a second negative pole current collector and a fuse connected between the first negative pole current collector and the second negative pole current collector; one end of the first negative pole current collector is located on the insulating gasket and the other end of the first negative pole current collector extends to an opening of the battery shell and is tightly pressed on the inner wall of the battery shell by the battery cover plate; one end of the second negative pole current collector is located on the insulating gasket and the other end of the second negative pole current collector extends towards the bottom of the battery shell and is welded with the negative pole piece. According to the internally-arranged protection device type lithium battery, an internally-arranged protection device with a simple structure is arranged so that the short-circuit protection capability and the shake-proof capability of the lithium battery are improved.

The invention discloses a preparation process of a composite fishing rod. The preparation process is characterized by comprising the following steps: (1) a composite material is fed in melting equipment for heating and melting to obtain a melt; (2) non-woven fabric is tailored by a set size, and the tailored non-woven fabric is dipped in the melt, so that the melt is combined with the non-woven fabric; and (3) the non-woven fabric dipped with the melt is wound on a core to be fed in curing equipment for curing, and then, the core is removed for painting and drying. The preparation process is simple in step and controllable; and the prepared fishing rod is smooth and compact in surface, and is excellent in mechanical performance.

The invention discloses a thermal insulation asphalt anticorrosion paint, which consists of isocyanate, polyether, an epoxy resin, phosphorous acid, coal tar pitch, methylbenzene, a thermal insulation material and a solvent, wherein the isocyanate is polymethylene polyphenyl isocyanate No.400, the solvent is dimethylbenzene, and the thermal insulation material consists of 50 to 80 portions of hollow glass fine powder and 80 to 100 portions of expanded perlite powder. The anticorrosion paint has the characteristics of thin coatings, low cost, time-saving and labor-saving coating, good thermal insulation performance, firm adhesion force, strong friction force resistance, resistance to chemical corrosion of acid, alkali and salt and so on.

The invention discloses a high-branch pruning pneumatic tool for charged high-voltage lines. The high-branch pruning pneumatic tool for the charged high-voltage lines comprises a casing, and an air cylinder is arranged in the casing; a piston rod is connected with a cutting saw blade, an L-shaped protecting rod fixed on one side of the casing is arranged above the cutting saw blade; a steering block is hinged below the casing; the casing is provided with a clamping block I and a clamping block II on two sides of the steering block; the steering block is connected together with the clamping block I and the clamping block II through a tension bolt, and the connecting part of the upper part of the steering block and the casing is in the shape of a circular arc; an insulation rod is fixedly connected at the lower end of the steering block. According to the invention, the hand-held operation part of the high-branch pruning pneumatic tool for the charged high-voltage lines is formed by combining the hollow insulation rod and an insulation pull rope, so that the high-branch pruning pneumatic tool for the charged high-voltage lines has the insulation function, and the protecting rod is arranged to provide a certain safe working range for the cutting saw blade; the high-branch pruning pneumatic tool has a cutter steering mechanism, thereby being convenient for pruning tree branches in any direction to improve the labor efficiency.

The invention provides a high-toughness fishing rod, and relates to the technical field of fishing gears. The high-toughness fishing rod comprises components in parts by mass as follows: 18-20 parts of macroporous absorption resin, 40-50 parts of carbon fiber, 4-6 parts of nano silicon carbide, 15-25 parts of polyethylene fiber, 1.5-2.5 parts of a curing agent, 4-6 parts of bamboo fiber, 2-4 parts of kaolin and 0.5-1.5 parts of an adhesive. The fishing rod has an insulation function and has the advantages that the toughness is good, the weight is light, a rod tip can bend for 180 degrees, the flexible rod tip better facilitates force unloading, and rod break or line break caused by struggle of big fierce fish is prevented; and meanwhile, accidents of lightning stroke and electric shock during fishing can be avoided, and the accident rate of outdoor fishing in thunderstorm days is reduced effectively.

The invention provides a piezoelectric acceleration sensor, which comprises an outer assembly, an inner assembly and an insulating hood. A containing cavity is formed in the outer assembly; the innerassembly is arranged in the containing cavity and comprises a shielding hood and a sensor core arranged in the shielding hood; and the insulating hood is arranged in the containing cavity and attachedto the peripheral wall of the shielding hood. The piezoelectric acceleration sensor provided by the invention has good pressure resistance and insulation, and is not prone to breakdown when encountering lightning or abnormal high-voltage input.

The invention discloses an aerial cable shock absorber with insulation performance. The aerial cable shock absorber comprises a base, wherein the base is fixedly connected with an electric pole for connecting cables; the base is connected with a shock absorber through a connecting rod; the shock absorber comprises a fixed plate, first springs connected onto the fixed plate and plastic rings connected onto the first springs; one side of the fixed plate is connected with a supporting plate parallel to the fixed plate; the supporting plate is connected with the connecting rod; one end of the connecting rod is articulated with the base, and the other end of the connecting rod is articulated with the supporting plate; two sides of the fixed plate are connected with the first springs respectively; each of the first springs is provided with the corresponding plastic ring respectively; the first springs positioned on the same side of the fixed plate are connected with the cables through the corresponding plastic rings; and the plastic rings are connected onto the cables in a sleeving manner. The two cables are connected together through the fixed plate and the first springs, the two cablesplay a role of interaction under the effect of the first springs, and simultaneously, the effect of shock absorption is achieved.

The invention discloses a stable electrocardiographfor medical treatment of internal medicine, which comprises a protective shell and a magnetic partition plate, an insulating layer is connected to the inner wall of the protective shell, a frosted bottom plate is embedded in the bottom end of the protective shell, a connecting bearing is arranged at the upper end of the outer surface of the protective shell, and fixing columns are fixed to the left upper end and the right upper end of the connecting bearing; a supporting partition plate is arranged at the upper end of the protective shell, handles are connected to the left end and the right end of the outer side of the protective shell, the magnetic partition plate is embedded in the lower end of the right surface of the protective shell, an electrocardiogram body is fixed to the middle of the inner side of the protective shell, and supporting frames are connected to four corner ports of the protective shell. According to the invention, A semi-enclosed structure is formed between the protective shell and the electrocardiogram body, so that the influence of the external environment on the electrocardiogram body can be avoided, the detected data is more accurate, the observation of a patient by medical personnel is facilitated, and the connection between the protective shell and the electrocardiogram body can be more stable by the arrangement of the supporting frames.

The invention discloses a safety protection system of an electric heating film heater. The safety protection system provided by the invention comprises an electric heating film plate, wherein one end of the electric heating film plate is provided with a temperature controller. The safety protection system is characterized in that a film is arranged between the temperature controller and the electric heating film plate, thus avoiding the phenomenon that the power supply of the temperature controller is cut off immediately when a temperature control sheet is tripped due to overquick temperature rise at the local part of the electric heating film plate.

The invention provides a moisture-curing thermal-insulation asphalt anticorrosive paint used for the external wall of the pipeline, consisting of two components; the anticorrosive paint is characterized in that a component A consists of isocyanate, polyether diol, epoxy resin, phosphoric acid, coal tar pitch, toluene, thermal insulation material and a solvent; a component B consists of toluene diisocyanate, acetone and trihydroxy polyether, wherein, the isocyanate is polymethylene polyphenyl isocyanate 300<model>; the solvent is xylene; and according to the parts by weight, the thermal insulation material consists of 50-80 parts of hollow glass micro-fine powders, and 80-100 parts of expansion perlite powders. The thermal-insulation asphalt anticorrosive paint has the advantages of thin coating layer, low cost, saving time and effort during coating process, good thermal insulation performance, firm adhesion, strong anti-friction force, resisting chemical corrosions such as acids, alkali, salt, and the like, reducing the transmission resistance of oil, natural gas, water and sewage, and hanging no scales or silt.

The invention discloses a horizontal axis semi-integrated type ocean current energy generator set. The horizontal axis semi-integrated type ocean current energy generator set comprises a propeller hubmodule, a main shaft gear case integrated module and a motor module which are sequentially arranged. The main shaft gear case integrated module comprises a main shaft, a power output shaft and a shell. A main shaft front end bearing pedestal and a main shaft rear end bearing pedestal are arranged between the two ends of the main shaft and the shell correspondingly. The main shaft front end bearing pedestal is located on the side, facing the propeller hub module, of the main shaft rear end bearing pedestal. A main shaft seal preventing seawater in the outside world from entering the main shaftgear case integrated module is arranged between the main shaft front end bearing pedestal and the main shaft. A propeller hub flange is arranged at the end, facing the main shaft, of the propeller hub module. A rapid replacement seal structure used for rapidly overhauling and replacing a seal ring of the main shaft seal is arranged between the main shaft and the propeller hub flange. The motor module comprises a motor input shaft. An elastic coupling module is arranged between the power output shaft and the motor input shaft.

The invention discloses a refrigerator door pad, which comprises a hook part, a magnet part and a thermal insulation part, wherein, the hook part is arranged on a mounting groove formed inside a refrigerator door; the magnet part is closely glued to the front of a refrigerator body and internally provided with a magnet; the thermal insulation part is formed between the hook part and the magnet part and internally provided with soft foaming foams; the hook part, the magnet part and the thermal insulation part are formed by extrusion of rubbers or soft synthetic resins; and the inside of the thermal insulation part is provided with the soft foaming foams which thermally isolate the inside and the outside of a refrigerator. The soft foaming foams with thermal insulation function has obvious thermal insulation characteristic compared with an air layer in the prior art, thereby the energy loss of the refrigerator can be reduced and the electricity can be saved.

The invention discloses a production method of wood and stone copying serial furniture with natural textures. Magnesium oxide, magnesium chloride, water and glass fiber reinforced materials are used as raw materials; a certain quantity of modifying agent, sawing wood powder and talcum powder are added; a mold and a skeleton structure are used for operating by steps; and the furniture is formed by shaping and oxidation. The production method can once manufacture a designed product through the mold; the product has textures of natural solid woods without carving; the process flow is simple; the source of the raw materials is wide; woods are not needed, or fewer woods are used, so that the forest resource consumption is largely reduced, and the ecological environment is protected; the product is green and environment-friendly, contains no substances harmful to human bodies, prevents insects, water and moisture, and generates no mould and deformation; and a decoration material has such functions as thermal isolation, sound isolation and insulation.

The invention relates to a 10kV portable auxiliary ladder stand, including a ladder body, a latch hook and a hoop. The lower part of the ladder body is provided with the hoop, the upper end of the ladder body is provided with the latch hook; and the latch hook is connected to a binding rope. The ladder stand provided by the invention can be used as a step ladder and a single ladder, and is convenient for carrying by the user. The ladder stand is insulative, expands the scope of application, protects the safety of construction workers, solves the operation and construction time, and improves work efficiency.

The invention discloses an anti-electric shock type water mixing valve. The anti-electric shock type water mixing valve comprises a valve body and a face cover, wherein a handle switch is arranged right ahead the valve body, a mounting seat is arranged at the rear part of the valve body, water inlet chambers and external thread interfaces are arranged on two sides of the valve body, a water outlet chamber is arranged at the lower part of the valve body, two ends of a plastic cold water tube and a plastic hot water tube are respectively sleeved with movable compression nuts, and the cold water tube and the hot water tube are locked on the external thread interfaces of the water inlet chambers of the valve body by virtue of the compression units on one ends of the plastic cold water tube and the plastic hot water tube; the valve body, the external thread interfaces and the mounting seat are subjected to once injection molding by virtue of engineering plastic so as to form an integral structure, and the handle is plastic; the face cover comprises a first hood sleeve and a second hood part, a handle switch is connected with a regulating rod, the regulating rod of a valve core penetrates through a through hole of the first hood sleeve and is inserted into an inner cavity of the handle switch, and the second hood part is sleeved outside the valve body. The anti-electric shock type water mixing valve has the advantages that the structure is simple and reasonable, the manufacturing cost is low, and an electric shock hazard can be effectively prevented.

The invention discloses a leveling lifting appliance for a suspension type welding machine. The leveling lifting appliance comprises a lifting lug and two draw bar assemblies and further comprises a screw, a beam and a U-shaped bolt, a connection sleeve is arranged on the lower portion of the lifting lug, the connection sleeve is sleeved on the screw, two adjusting screw nuts are in threaded connection with the screw, the two adjusting screw nuts respectively abut against the two ends of the connection sleeve, one draw bar assembly is respectively hinged with the two ends of the screw, each draw bar assembly comprises a jaw bolt, a first nut, a sleeve, a plug, an insulation sleeve and a draw bar, the lower portion of the draw bar is fixedly connected with the beam, and the end portion of the U-shaped bolt penetrates through a jack on the beam to be installed and connected onto the beam through a second nut. The leveling lifting appliance is simple in structure, simple and convenient to adjust and operate and applicable to the suspension type welding machine and has an insulation function.

The invention discloses a preparation process of a composite fishing rod. The preparation process is characterized by comprising the following steps: (1) a composite material is fed in melting equipment for heating and melting to obtain a melt; (2) non-woven fabric is tailored by a set size, and the tailored non-woven fabric is dipped in the melt, so that the melt is combined with the non-woven fabric; and (3) the non-woven fabric dipped with the melt is wound on a core to be fed in curing equipment for curing, and then, the core is removed for painting and drying. The preparation process is simple in step and controllable; and the prepared fishing rod is smooth and compact in surface, and is excellent in mechanical performance.

The invention discloses a communication tower which comprises a base, a support, steel plates and a steel cylinder. The support is arranged on the base. The steel cylinder is installed in the middle of the support. The base, the support and the steel cylinder are sequentially welded. A grounding device is arranged in the support. The steel plates are arranged on the two sides of the steel cylinder. An installation frame is arranged on the steel cylinder and is in a trapezoid mode. Reinforcing ribs are arranged in the installation frame and welded to the installation frame. A supporting rod is arranged in the middle of the installation frame and provided with a lightning rod. An insulator is installed at the bottom of the lightning rod. A metal ball is arranged on the top of the lightning rod. The communication tower is high in structural strength and convenient to install and has a lightning protection function.

The invention discloses a capacitive voltage transformer. The capacitive voltage transformer comprises a capacitance voltage division assembly and an electromagnetic unit, the capacitance voltage division assembly comprises a one-stage or multi-stage stacked column, which is a coupling capacitor, and the coupling capacitor includes: an upper cover plate, a lower cover plate, an insulating sleeve,a capacitor core, a mouse cage electrode, a volume adapting device, a high-voltage lead and a low-voltage lead, a medium-voltage lead and a lead terminal are also arranged on a lowermost coupling capacitor, the low-voltage lead of the lowermost coupling capacitor is led out through a low-voltage lead-out pipe arranged in the lead terminal, the medium-voltage lead of the lowermost coupling capacitor is led out through a medium-voltage lead-out column arranged in the lead terminal, and the medium-voltage lead-out column penetrates out of the low-voltage lead-out pipe and is coaxial with the low-voltage lead-out pipe. The capacitive voltage transformer provided by the invention has the advantages of good insulation performance, small partial discharge capacity, excellent sealing performance,reliable performance, high mechanical strength, small product height, long operation life, stable and reliable operation and the like.

The invention relates to an electric vehicle battery box. The electric vehicle battery box comprises a power battery pack supplying power to an electric vehicle and further comprises an electric box bracket and insulation bushings which are fixedly installed on the electric vehicle; the outer side of the power battery pack is fixedly connected with multiple locating pin shafts; the insulation bushings are made of insulation materials and are fixedly installed on the electric box bracket, and each insulation bushing is provided with pin holes in one-to-one correspondence with the locating pin shafts; the locating pin shafts are inserted into the pin holes, corresponding to the locating pin shafts, of the insulation bushings; the power battery pack is in insulation connection with the electric box bracket. The electric vehicle battery box is simple in structure, convenient to install and maintain and good in insulation performance. The invention further relates to the electric vehicle comprising the battery box.

The invention provides a transformer with an insulating function. The transformer comprises an outer shell, an insulating sleeve sleeves the outer surface of the outer shell, first fixing blocks are fixedly mounted on two sides of the outer surface of the insulating sleeve respectively, second fixing blocks are fixedly mounted on the other two sides of the outer surface of the insulating sleeve respectively, and outer surfaces of the first fixing blocks and the second fixing blocks are provided with slotted holes respectively. A circular plate is arranged on one side of each first fixing block, a semicircular rod is welded to one side of each circular plate, and one end of each semicircular rod sequentially penetrates two slotted holes and extends to the outer surface of the correspondingsecond fixing block to allow fixed mounting of a connection block. The transformer with the insulating function has advantages that by arrangement of the insulating sleeve, risks of electric leakage of aged coils can be reduced, so that risks of electric shock of pedestrians are reduced; by cooperation of the first fixing blocks, the second fixing blocks and the slotted holes with the semicircularrods and the connection blocks, convenience in demounting of the insulating sleeve sleeving the outer surface of the outer shell is achieved, and accordingly subsequent maintenance of a transformer body is facilitated.