225results about How to "Effectively cut off" patented technology

The invention discloses a seawater factory-style circulating water fish farming treatment method which comprises, removing the residual bait and excrement from the seawater flowing out of the fish pond through full-automatic conduit pipe filter apparatus, entering foam separate tank from the circulating pump to remove part of the suspended matter and protein, then removing ammonia nitrogen through biological cleaning tank, adjusting water temperature and pH, disinfecting through ultraviolet rays, oxygenation, charging the detected water into the fish pond again, thus completing a circulation.

The invention relates to a gas inlet regulating device of a double-cyclone dust collector. Two gas inlets of the double-cyclone dust collector are connected with a flue gas pipeline in parallel. The gas inlet regulating device is arranged at the gas inlet of the double-cyclone dust collector (8) and comprises a first valve plate (1-a), a second valve plate (1-b), a first valve plate rotating shaft (2-a), a second valve plate rotating shaft (2-b), a valve plate opening drive device (3), a gas flow rate monitoring unit (4) and a control system (7), wherein the first valve plate (1-a) and the second valve plate (1-b) are symmetrically positioned on the pipelines of the two gas inlets of the double-cyclone dust collector (8) respectively, the valve plate opening drive device (3) is used for respectively regulating the opening angles of the first valve plate (1-a) and the second valve plate (1-b) by the first valve plate rotating shaft (2-a) and the second valve plate rotating shaft (2-b), the air inlet pipeline is provided with the gas flow rate monitoring unit (4), and the valve plate opening drive device (3) and the gas flow rate monitoring unit (4) are respectively connected with the control system (7).

The invention relates to a phase shift soft switch high frequency isolation photovoltaic grid-connected inverter which comprises a main circuit, a DSP control circuit, an ARM control circuit, and an auxiliary switch power supply circuit. The invention firstly provides a full digitalization control photovoltaic grid-connected generating system, wherein a high frequency full bridge phase shift circuit combined with a high and low frequency full bridge inverter circuit is main circuit structure, and high speed embedded digital signal processor DSPTMS320F2808 is a core. Maximal power point tracking of solar cell panel output power and isolation of photovoltaic direct current and electrical network alternating current are realized, software realizes phase-locked loop control, perfect grid-connected and islanding protection functions are provided, and the whole system can operate safely and reliably.

The invention discloses a coastal kaline soil forestation method, comprising the following steps: A. trenching and building ridges, and building rain collection beds; B. setting rain collection surfaces; C. digging plant pits, and setting salt isolation layers; D. collecting tree species and planting; E. setting surface cover layers of plant pits; F. tending, and weeding at proper time; wherein, the step of trenching and building ridges, and building rain collection beds is based on the design of forestation spacing, and flow collection trenches are dug at interval of a row spacing along the direction of rows; the depth of the trench bottom is 20cm to 25cm; the ground surface between the ridge and the trench bottom is trimmed to form a shallow v-shaped groove; the sloping surfaces are leveled and compacted to form the rain collection beds. The coastal moderate kaline soil forestation technology of the invention greatly increases the water content of soil, and the salt is efficiently leached and reduced, thereby efficiently improving the survival rate, save rate and growing speed of forests; the survival rate of forests reaches greater than 85%.

The purpose of the present invention is to provide a wafer-processing tape that does not result in displacement at the interface between the adhesive layer and the sticky agent layer due to expansion, that has uniform expansion properties suitable for a step for dividing the adhesive layer, and that has excellent pickup performance. In the present invention, the wafer-processing tape is characterized by comprising: a substrate film; a sticky agent layer formed on the substrate film; and an adhesive layer formed on the sticky agent layer; the shear force of the sticky agent layer and the adhesive layer at 25 DEG C being no less than 0.2 N / mm2, and the peeling force between the sticky agent layer and the adhesive layer at a peeling angle of 180 DEG and a peeling speed of 300 mm / min in a standard state compliant with JIS-Z0237 after being irradiated by an energy beam of 200 mJ / cm2 being no greater than 0.3 N / 25 mm.

The invention provides a drive control device used for a proportional valve, comprising a drive unit, a drive feedback unit, a logic processing unit and a power supply and protective unit, wherein, the drive unit is used for receiving the input of control signals, converting the control signals into drive signals, and controlling the opening of the proportional valve according to the drive signal; the drive feedback unit is connected with the drive unit, and is used for monitoring the drive signals of the drive unit, and providing a monitoring signal; the logic processing unit is connected with the drive feedback unit, is used for processing the monitoring signal output by the drive feedback unit, and providing a protective signal; and the power supply and protective unit is connected between the logic processing unit and the proportional valve, and is used for executing the protective operation of the proportional valve according to the protective signal output by a logic processing component. The drive control device can enable the proportional valve to have high accuracy and safety.

A cutter for woven belts includes a handle having two ends respectively defined to be a first end and a second end. The handle has a circumferential side provided with a cutting opening located close to the first end, extended in a direction from the second end toward the first end and having an opposite sealed end connected with two guide grooves. A blade deposited in the handle is exposed in the cutting opening. Thus, when a woven belt is being cut by the cutter, the cut-off portion of the woven belt will be guided by the guide grooves to be separated from the original woven belt so that the woven belt cut apart can be prevented from being accumulated at the cutting opening or being hindered by a user's hand, enabling the cutter to effectively cut off woven belts for facilitating sequent work of removing the woven belts from goods.

The invention relates to a biological lysozyme compound preparation and a preparation method thereof. The preparation method comprises the following steps: dissolving lysozyme, amino acid, proteolytic enzyme, lysostaphin and peroxidase in water according to a certain proportion, transferring the mixed solution into a mixing tank, adding sorbitol, hydrated silica, aluminium hydroxide, glycerol, sodium lauroyl sarcosine, edible essence, cellulose gum, carrageenan, hydroxyethyl cellulose, sodium phytate, saccharin sodium, strontium chloride, trisodium phosphate, borneols, sodium borate, cinnabar, natrii sulfas exsiccatus and allantoin according to corresponding proportion, reacting for 47-49 h under a constant temperature condition of 38-42 DEG C to prepare the activated biological lysozyme compound preparation finished product. The biological lysozyme compound preparation belongs to a novel non-hormonic and non-antibiotic protein function preparation, has extremely great capacities of bacteriolyzing, reducing inflammation and enhancing immunity, and various effects of resisting various infections and promoting rehabilitation.

The invention relates to a touch-free key control device of an elevator. The device comprises a central control device and a key input circuit matched with the central control device, wherein a face recognition device, a voice input device and a two-dimensional code scanning device are further arranged, the output of the key input circuit is connected with a corresponding input / output interface ofthe central control device, a signal input switch of the key input circuit is an automatic induction switch or a switching circuit formed by connecting the automatic induction switch and a key switchin parallel, and the central control device controls the elevator to operate according to an input signal after receiving the input signal of any one of the face recognition device, the voice input device, the two-dimensional code scanning device and the automatic induction switch. The device is advantaged in that a user can operate and control the elevator without directly contacting the elevator key, so direct contact between a hand and the key is avoided, and the sanitation and safety hidden danger caused by contacting the key is eliminated.

The invention discloses a safety control device of an electric vehicle. A high-voltage battery control module cuts off a first control end of a high-voltage relay and / or a whole vehicle control module cuts off a second control end of the high-voltage relay through an emergency power-off module to make the high-voltage relay cut off, and thus a high-voltage power supply loop of all components of the whole vehicle is cut off. The invention further discloses a safety control method of the electric vehicle. By means of the safety control method and device of the electric vehicle, the high-voltage electricity of the whole vehicle can be effectively cut off in time when a collision occurs, and thus electric shock of people can be avoided; when a slight collision occurs or no electric leakage risk exists, the dynamic property of the whole vehicle can be maintained, and thus the vehicle can quickly leave a dangerous area; the structure is simplified, and safety and reliability are achieved.

The invention discloses an operation safety control system of a crane; the control system comprises a power supply, a get-off control unit and a get-on control unit; the power supply is connected with a power supply input end of an engine electronic control unit by a first power supply circuit, and is connected with a flameout signal input end and a get-on controller of the engine electronic control unit by a second power supply circuit; and the get-on control unit comprises a scram switch and a scram control device. The scram control device controls the on-off of the first and the second power supply circuits according to a scram gear or a restore gear on which the scram switch is located. Therefore, when an emergency situation happens in the get-on operation process of the crane, an operator can cut off the power supply of the engine ECU (electronic control unit) by using the scram control device, to enable the engine to be flamed-out, thereby effectively and completely cutting off the power system in time, and ensuring the safety of people, apparatuses and surrounding operation environments. On the above basis, the invention further provides an operation safety control method of the crane and the crane having the above control system.

The present invention provides a rotary blade and a small electric instrument having the rotator blade, wherein the rotator blade which can effectively introduce and efficiently cut off the beard and has easy cleaning of flock is provided. The rotator blade which comprises a blade body and a blade bracket that supports the blade body is composed. Etching treatment is performed for stainless steel plate thereby forming a group of rib-shaped small cutting edge and a group of cutting blade holes in the blade body. A plurality of blade bodies are fixed on a circumferential surface of the blade bracket and the rotator blade is composed to a cylinder shape. Each small cutting edge is provided with the following components: a cutting surface of an external surface; a non-cutting surface of an inner surface; a side edge part for connecting the cutting surface with the non-cutting surface; a cutting edge which is formed at an upstream side in a rotation direction of the cutting surface; and a back clearance surface edge which is formed at the downstream side in the rotation direction of the cutting surface. A width center of the non-cutting surface deviates from a width center of the cutting surface to the downstream side of the rotation direction. A cutting edge angle of the cutting edge, which is smaller than an edge angle of the back clearance surface edge, is formed.

The invention discloses a preparation method for odorless regenerated rubber. The preparation method is characterized in that tread rubber powder, an environment-friendly activator, a vegetable oil softener and water are added in the chemical desulfuration process; the environment-friendly activator is prepared from the following components in parts by weight: 3-3.5 parts of persulfate and 7-6.5 parts of aliphatic acid; the amount of the environment-friendly activator is 0.18%-0.29% of the mass of the tread rubber powder; the vegetable oil softener is prepared from cottonseed oil, colophony, pine tar oil, rap oil, drainage oil and olive oil; the amount of the cottonseed oil, the colophony, the pine tar oil, the rap oil, the drainage oil and the olive oil is 3.6%-4.6%, 0.6%-1%, 1.3%-1.9%, 1%-1.5%, 0.8%-1.4% and 0.7%-1.3% of the mass of the tread rubber powder respectively; the added quantity of water is 17%-20% of the mass of the tread rubber powder. According to the invention, products obtained through the preparation method are odorless without containing benzene compounds, are high in tensile strength, great in elongation and moderate in mooney point, and can reach the national-level standard of regenerated rubber; the products such as shoe soles produced from rubber prepared through the preparation method have no color migration.

The invention discloses a reinforced concrete pile crusher, and mainly relates to the field of building machinery. The reinforced concrete pile crusher comprises a plurality of crushing devices, wherein each crushing device comprises a top steel plate, a bottom steel plate, a device housing welded between the top steel plate and the bottom steel plate, a servo hydraulic cylinder, a slide motor base and a servo motor; the crushing devices are fixed with one another end to end; a device cavity is arranged on the inner part of the device housing; the slide motor bases are in horizontal sliding connection in the device cavity; the output shafts of the servo motors are connected with power rotary shafts; the tail ends of the power rotary shafts get out of the device housing, and are equipped with drill bits; and each crushing device is fixedly arranged at the top end of a big arm of an excavator through a chain, and the corresponding servo hydraulic cylinder works through a hydraulic systemon an excavator. The reinforced concrete pile crusher has the beneficial effects that a reinforced concrete pile can be effectively cut off and cut up, so that reinforcement can be separated from a concrete pile to the greatest extent for recycling the reinforcement.

The invention discloses a method for pruning a tea tree. After spring tea is picked every year, a tree crown of the tea tree which is more than 30 to 60 centimeters away from the ground is pruned completely by using a tea tree pruning machine in a horizontal pruning method from May 2nd to 15th. Due to the adoption of the pruning mode, exuberant branches with small physiological ages can be promoted to be sprouted from the tea tree, and large and full buds can be obtained in the following spring to meet the requirement on early time and quality of famous and high-quality single-bud tea. In addition, the method has certain effects on the prevention and control of plant diseases and insect pests of tea gardens and the improvement of the utilization rate of fertilizer water and the picking efficiency of the tea gardens.

The invention discloses a steel sheet pile support construction method for building an underground garage open caisson to reduce the construction complexity and improve the construction efficiency during open caisson building and reduce the building expenditure for the open caisson. According to the construction method, open caisson construction is carried out in an area defined by a steel sheet wall, wherein building of a wall of the open caisson is carried out in a manner of segment-by-segment construction from bottom to top. The building method comprises the steps that steel sheet piles are sunk, and the continuous steel sheet pile wall is formed; a certain of earthwork is excavated in the area defined by the steel sheet pile wall, then, a pile block enclosure purlin is erected on the top of the steel sheet pile wall, and horizontal braces are built on the inner side of the pile block enclosure purlin; and then, open caisson building is finished through a method that earthwork is excavated segment by segment, the wall is poured segment by segment and sinking is carried out.

The invention relates to an array substrate of a thin film transistor, comprising a substrate, a plurality of electrode wirings, a plurality of pixel units, a plurality of pads and a plurality of switch assemblies. The substrate has a display region and a peripheral line region. The electrode wirings are configured on the substrate and divide the display region into a plurality of pixel regions. Each pixel unit is respectively configured in one of the pixel regions and driven by the electrode wirings. The pads are configured in the peripheral line region. Each pad comprises a first main body part and a first extending part. The first extending part is narrower than the first main body part. Each pad is electrically connected with corresponding electrode wiring. The switching assemblies are configured in the peripheral line region, and at least one switch assembly is configured between two adjacent pads. Each switch assembly is electrically connected with the pads on both sides of the switch assembly.

The invention provides a cylindrical cell laser automatic peeling system. The system comprises a loading mechanism, a separation mechanism, a laser cutting and peeling mechanism, a cell conveying line, a finished product unloading mechanism and a finished product transportation mechanism; the loading mechanism is arranged at one end of the cell conveying line; the finished product unloading mechanism and the finished product transportation mechanism are arranged at the other end of the cell conveying line; the separation mechanism, the laser cutting and peeling mechanism, the finished productunloading mechanism and the finished product transportation mechanism are arranged in an operation direction of the cell conveying line in sequence; the separation mechanism is arranged near one end of the loading mechanism; and the laser cutting and peeling mechanism is arranged near one end of the finished product unloading mechanism. The system adopts a non-contact laser machining method to peel cells, meanwhile, adopts double production lines for automatic material separation, realizes full-automatic production through the loading mechanism, the cell conveying line, the finished product unloading mechanism and the finished product transportation mechanism, and greatly improves the machining efficiency on the basis of guaranteeing the performances of cell products.

The invention discloses a device for cutting auxiliary roots of wheat, which comprises a shovel handle and is characterized in that the lower side of the shovel handle is connected with a shovel tip, the upper side of the shovel tip is provided with a front cutting edge, and the lower side is provided with a rear cutting edge, and the front cutting edge and the rear cutting edge are vertical to the same plane. The device can effectively cut the partial auxiliary roots between every two wheat lines, has a certain loosening function, little advancing resistance and high working efficiency, needs not to dig, keeps the upper soil layer and the lower soil layer orderly to reduce the dispersion of soil moisture content, and can play the role of removing grass.

The present invention discloses a separation membrane and a preparation method thereof, and a lithium ion battery using the separation membrane. The separation membrane comprises a porous separation membrane substrate and a composite coating coated on at least a surface of the separation membrane substrate, wherein the composite coating comprises a polymer wax coated and modified ultra-fine glass fibers and an aqueous emulsion, and the melting point of the polymer wax for coating the ultra-fine glass fibers is 80-160 DEG C. The preparation method is used for preparing the separation membrane. Compared with the separation membrane in the prior art, the separation membrane of the present invention has advantages of high thermal stability, strong mechanical property, strong liquid absorbent ability, good safety and the like, such that the cycle performance and the safety of the lithium ion battery can be effectively improved.

[Problem] To provide a fixed-abrasive-grain wire-saw that enables improved workpiece cutting plane accuracy and grinding efficiency and further allows for a longer product service life, a method for manufacturing the fixed-abrasive-grain wire-saw, and a method for cutting a work piece using the fixed-abrasive-grain wire-saw. [Solution] When abrasive grains (2) are to be affixed to the external peripheral surface of a metallic core wire (1), a plurality of transfer rollers (18) provided with a plurality of very small holes (18a) filled with an adhesive (3a) are used to transfer the adhesive (3a) onto the external peripheral surface of the metallic core wire, whereby a plurality of lines (li) of a punctate adhesive layer (3) axially arranged in straight lines at a regular pitch are formed on the metallic core wire; and, after being provisionally bonded to the adhesive layer, the abrasive grains are permanently bonded by electrodeposition on a metallic plating layer (4).

The invention discloses a sharp blade double-level replaceable trepanning drill for fiber enhanced composite hole making, belongs to the field of machining tools, and relates to a sharp blade double-level replaceable trepanning drill for fiber enhanced composite hole making, wherein the sharp blade double-level replaceable trepanning drill is suitable for high-quality machining of composite holes with the large hole diameter through the single procedure. A drill bit comprises five parts including a sharp blade cutting mechanism, a sharp blade connecting ring, a broaching cutting area, a diameter changing area and a clamping area. The drill bit is provided with a double-level structure, the first level is a trepanning drill body with a sharp blade structure, and the trepanning drill body is fixed to a tool through a positioning locking block and an L-shaped positioning groove and can be rapidly replaced; and the second level is a twisted type structure in which a piece embedding area is formed through coping, a replaceable transition blade is installed in a transition area of the second level and the first level, and a plurality of replaceable broaching blades are arranged in the direction of a spiral groove. The drill bit can effectively cut out fiber through a sharp blade, the machining damage is reduced through the double-level structure, and the machining quality is improved; and the tool durability is improved through the replaceable mechanism and the replaceable blades, and the sharp blade double-level replaceable trepanning drill is suitable for machining large fiber enhanced composite holes.

The invention relates to a straw fixed-length cutting device with a controllable length. The straw fixed-length cutting device is characterized by comprising a machine frame, a power transmission device, a feeding device, a clamping roller squeezing and shearing device, a fixed-length cutting device body, a guide and protection device and a straw collecting device, wherein all the devices are installed on the machine frame, the feeding device is installed at the lower end of one side of the machine frame, the clamping roller squeezing and shearing device is installed at the tail end of the feeding device, the fixed-length cutting device body is installed at the discharging end of the clamping roller squeezing and shearing device, the straw collecting device is installed at the discharging end of the fixed-length cutting device, the guide and protection device is installed at the upper ends of the feeding device, the clamping roller squeezing and shearing device and the fixed-length cutting device body, the power transmission device provides power for the other devices, and the rotation speed of the fixed-length cutting device can be controlled by adjusting the power transmission device so that the cutting length of the straw can be adjusted.

The invention relates to a self-positioning waste PCB milling cutter handle recovering and cutting device and method. The self-positioning waste PCB milling cutter handle recovering and cutting devicecomprises a base; a first sliding rail and a second sliding rail are fixed to the base; a first slippage base is installed on the first sliding rail in a sliding fit mode and provided with a clampingdevice for clamping and rotating waste milling cutters; a cutting device for cutting bars is installed on the second sliding rail in a sliding fit mode; a discharging hopper is arranged on the top ofthe clamping device; an alignment mechanism for positioning and aligning of the waste milling cutters is installed on the side face of the clamping device; an unloading mechanism for unloading the milling cutter bars is arranged on side face of the lower portion of the clamping device; and a collecting box is arranged in the position, at the unloading mechanism, of the bottom end of the clampingdevice. The cutter handle recovering and cutting device can be used for automatically blanking PCB milling cutter handles, can also achieve automatic positioning and ensure the cutting length, and finally achieves fixed-length cutting.

The invention discloses a novel heat insulation structure for a segmented cabin body and the segmented cabin body with the novel heat insulation structure. The cabin-segment heat insulation structure consists of a cabin-segment inner cabin and a cabin-segment outer cabin, wherein the cabin-segment inner cabin consists of an inner cabin left side plate, an inner cabin base plate, an inner cabin right side plate and an inner cabin top plate, each of which consists of plywoods, inner cabin frameworks, inner cabin inner skins, flameproof hard polyurethane foaming plastic, inner cabin outer skins,asbestos cloth and rivets. By adoption of the novel heat insulation structure, a heat transmission way can be effectively cut off and the heat insulation property and the safety of the cabin body aregreatly improved; furthermore, the manufacturing process is simple; and cost and resources are saved.

The invention discloses a low-cost insulating rubber cable material and a preparation technology thereof. The low-cost insulating rubber cable material consists of the following components in parts by weight: 8-14 parts of chlorinated polyethylene, 15-21 parts of ethylene-octylene copolymer elastomer, 15-31 parts of modified calcination pottery clay, 5-8 parts of 80# paraffin base rubber oil, 0.5-1 part of active magnesium oxide, 4-7 parts of superfine talcum powder, 1-2 parts of active zinc oxide, 0.3-0.6 part of environment-friendly stabilizer, 1-2 parts of microcrystalline wax, 0.5-1 part of titanium dioxide, 0.5-0.8 part of 4,4' bis(alpha, alpha dimethyl benzyl) diphenylamine, 1-2 parts of dicumyl peroxide and 1-1.5 parts of triallyl cyanurate, wherein the mass fraction of the octylene monomer in the ethylene-octylene copolymer elastomer exceeds 20%. By adopting the low-cost insulating rubber cable material and preparation technology thereof disclosed by the invention, the inorganic powder is uniformly added, the technological range is wide, relatively high elongation at break is still kept when the continuous vulcanization temperature is 190-210 DEG C, and the cost is greatly reduced.

To provide a device for cutting an article being stitched by a sewing machine, which can cut from any position on the article being stitched regardless of whether or not stitching is present. A device (20) for cutting an article being stitched by a sewing machine comprises a fixed frame (41) attached to a sewing machine main body (21b), and a mobile frame (42) which is movably attached to the fixed frame (41). A rotary blade (34) is rotatably provided on the mobile frame (42). The fixed frame (41) is provided with a drive means (37) for driving the rotary blade (34) by way of a power transmission part (36), and an operation means (43) for operating the mobile frame (42) in such a way that the rotary blade (34) is moved from a position (P1) of not cutting the article being stitched to a position (P2) of cutting the article being stitched. A throat plate (32) provided on a bed part (22) side where the sewing machine main body (21b) is fixed is provided with a fixed blade (38) which cooperates with the rotary blade (34) in order to cut the article being stitched.

The invention discloses an explosion prevention and fire extinction testing device for a lithium ion battery. The device comprises a base 2 and a protective shell 9, and is improved in a way that a battery 1 is arranged between the base 2 and a cavity of the protective shell 9, and the cathode and the anode 14 of the battery are connected with testing terminals 12 on charging and discharging test lines 3; the base 2 is provided with a temperature controlled switch 4 which comprises a temperature sensor 6 and a signal line 5; the temperature sensor 6 is connected with the lithium ion battery 1. According to the explosion prevention and fire extinction testing device for the lithium ion battery, a high-temperature abnormal phenomenon can be timely sensed, a circuit can be timely, rapidly and effectively broken to reduce the temperature of the battery, and meanwhile, inert gas can be emitted to isolate the battery, so that the lithium ion battery can be prevented from being exploded and burnt due to high temperature.

The present invention relates to a standby power shut-off device for automatically shutting off standby power depending on whether an electronic product power source is on or off, and to a control method therefor. The present invention provides an electronic product which employs the standby power shut-off device and the control method therefor, and thus makes it possible to efficiently shut-off standby power using common types of power socket of the prior art rather than using a power socket with extra functionality added. Also, the present invention maximises convenience to the user since standby power is automatically shut off when the electronic product power source is off, without unplugging from the power source.

The invention relates to the field of a power system, and discloses a lightning arrester. The lightning arrester comprises an arc extinguishing segment and a resistance segment, wherein the arc extinguishing segment and the resistance segment are coaxially and vertically arranged, an upper end of the arc extinguishing segment is connected with a lower end of the resistance segment, an upper end of the resistance segment is connected with external ground, the arc extinguishing segment comprises an epoxy core rod and a spiral umbrella disc, the spiral umbrella disc is spirally wound around an outer side of the epoxy core rod, a plurality of arc extinguishing units are arranged at an outer edge of the spiral umbrella disc at intervals, the resistance segment comprises a cylindrical resistance body and a plurality of annular umbrella discs, the annular umbrella discs are sleeved at an outer side of the resistance body at intervals. By the lightning arrester, a lightning current is effectively released during lightning of a power transmission line, the current amplitude of a power frequency follow current after action of a lightning wave also can be limited, a circuit is prevented from being stricken, the power frequency follow current also can be effectively cut off even the resistance segment is damaged or failure, and the normal and stable running of the power transmission line is ensured.