CN112713510A - Safety protection device for electric power system - Google Patents

Abstract

The invention discloses a safety protection device for an electric power system in the technical field of electric power system protection, which comprises a protection box body, wherein transparent toughened glass plates are embedded and fixedly installed above the left side and the right side of the protection box body through grooves, equal-width equal-height channel steel sections and vertical plates are respectively fixed on the left side and the right side of the bottom of the protection box body, a box cover with a sealing rubber ring is hinged to the top of the protection box body, when a temperature signal sensed by a temperature sensor exceeds a set threshold value of a controller, two electric gates and a first suction fan are opened to finish heat dissipation, when a humidity signal sensed by a humidity sensor exceeds the set threshold value of the controller, a semiconductor refrigeration sheet and a second suction fan work, airflow in the protection box body flows, moisture in the air is separated and discharged through refrigeration, the humidity is reduced, and when the humidity and the temperature trigger the controller to work, the humidity and the temperature trigger are matched, convenient operation and high automation degree.

Description

Safety protection device for electric power system

Technical Field

The invention relates to the technical field of power system protection, in particular to a safety protection device for a power system.

Background

The electric power system is an electric energy production and consumption system which consists of links such as a power plant, a power transmission and transformation line, a power supply and distribution station, power utilization and the like. The function of the device is to convert the primary energy of the nature into electric energy through a power generation device, and then supply the electric energy to each user through power transmission, power transformation and power distribution. In order to realize the function, the power system is also provided with corresponding information and control systems at each link and different levels, and the production process of the electric energy is measured, regulated, controlled, protected, communicated and scheduled so as to ensure that users obtain safe and high-quality electric energy.

The main structures of the power system include a power source (power plants such as hydropower stations, thermal power plants, and nuclear power plants), a substation (a step-up substation, a load center substation, and the like), a power transmission and distribution line, and a load center. The power supply points are also mutually connected to realize the exchange and regulation of electric energy among different regions, thereby improving the safety and the economical efficiency of power supply. The network formed by the transmission line and the substation is usually called a power network. The information and control system of the power system consists of various detection devices, communication devices, safety protection devices, automatic control devices and automatic monitoring and dispatching systems. The structure of the power system should ensure that the reasonable coordination of the production and consumption of electric energy is realized on the basis of advanced technical equipment and high economic benefit, the most critical factor for normal operation and transmission of electric power in a power plant is the electrical equipment, however, the existing power system equipment does not have a safety protection device, and the existing power system equipment does not have the function of bunching wires, so that the connecting wires are knotted, the maintenance is inconvenient, and the existing heat dissipation function is not good, and the use is easily affected by damp in rainy weather, for example, CN210957503U discloses a safety protection device for electrical power system equipment, which comprises a protection cover body, a first motor and a second motor, wherein a first air pipe is inserted into the left inside of the protection cover body, and the inner bottom outlet of the first air pipe is fixedly provided with a filter frame, and the inside of the filter frame is provided with a fan through a bearing seat. This scheme is through being provided with first tuber pipe, it is outside to blow the protection casing body right side with the thermal current to rotate through the fan, be convenient for get rid of the outside of protection casing body at the moisture of moist weather from the moisture of protection casing body bottom, play damp-proofing effect, avoid first filter screen to wet the damage, the device is through being provided with axial fan, prevent that the inside high temperature of protection casing body from causing first filter screen to damage, influence the use, through the contractile force of spring self, be convenient for centre gripping multiunit connecting wire, be convenient for the bunch, prevent that the connecting wire from knoing, inconvenient maintenance, but the device can't intelligent control, bring inconvenience for the use, based on this, the safety device for electric power system has been designed to the invention, in order.

Disclosure of Invention

The present invention is directed to a safety protection device for an electrical power system, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a safety protection device for an electric power system comprises a protection box body, wherein transparent toughened glass plates are fixedly installed above the left side and the right side of the protection box body in an embedded mode through grooves, equal-width channel steel sections and vertical plates with equal heights are respectively fixed on the left side and the right side of the bottom of the protection box body in an equal-width mode, a box cover with a sealing rubber ring is hinged to the top of the protection box body, U-shaped seats are detachably installed on the front portion and the rear portion of the left side of the bottom of the box cover, a branching device is fixedly installed on the lower portion of the left side of the protection box body in an embedded protruding mode through grooves, electric push rods are vertically and fixedly installed on the front portion and the rear portion of the left side of the bottom of an inner cavity of the protection box body, connecting blocks are fixed to the top of each connecting block, a bending rod, a refrigerating device and an air circulating device are embedded and fixed in the middle of the front surface and the rear surface of the protective box body through grooves, a lifting control module is embedded and installed above the rear surface of the protective box body, and through grooves are oppositely formed in two side walls of the channel steel section;

the wire distributing device comprises a first T-shaped block with a sealing rubber ring, wherein the upper and lower protruding parts of the first T-shaped block are provided with first mounting holes, the middle part of the first T-shaped block is uniformly provided with a plurality of wire through holes at intervals, a conical hard rubber pipe is coaxially fixed on the left side edge opening of each wire through hole, the outer wall of each conical hard rubber pipe is uniformly provided with a plurality of circular shearing grooves at intervals, the upper and lower parts of the inner wall of each circular shearing groove on the outermost side are respectively and fixedly connected with a baffle plate, a manual telescopic rod is horizontally fixed on the outer surface of each baffle plate, a threaded hole plate is fixed at the outer end of each manual telescopic rod, an inner cavity of each threaded hole plate is in threaded connection with an adjusting bolt, an arched block with a rubber pad is rotatably mounted at the inner end of each adjusting bolt, and the;

the limiting device comprises a rectangular block, a plurality of limiting through holes are uniformly and transversely arranged on the rectangular block in a penetrating mode, each limiting through hole comprises a rectangular hole section, two sides of each rectangular hole section are communicated with each other to form a trapezoidal hole section, and arc plates which are mutually overlapped up and down are rotatably arranged on the upper edge opening and the lower edge opening of each rectangular hole section through a rotating shaft, a torsion spring and supporting angle iron;

installation device is including preceding back parallel arrangement's L type pole, two the inner wall horizontal part of L type pole has the grid plate through the fix with screw, two around the interior perpendicular wall from the top down of L type pole is fixed with the crossbeam, two around any same height fixed mounting has back the thin aluminum plate of style of calligraphy between the crossbeam, lift control module signal connection has the controller, controller signal connection has temperature sensor, humidity transducer and relay control module, relay control module signal connection has electric putter.

Furthermore, the box cover is connected with the U-shaped seat through a countersunk bolt.

Further, the air circulation device comprises a second T-shaped block with a sealing rubber ring, wherein the upper protruding portion and the lower protruding portion of the second T-shaped block are provided with second mounting holes, air vents are formed in the middle of the second T-shaped block vertically, the upper portion and the lower portion of the middle of the second T-shaped block are provided with an inner edge port of each air vent, a first electric gate and a second electric gate are mounted on the inner edge port of each air vent respectively, the outer ends of the air vents are detachably provided with a metal filter screen and a filter respectively, the lower portion of each air vent is provided with a first suction fan through a cushion block, and the first electric gate, the second electric gate and the first suction fan are all in signal connection.

Further, refrigerating plant is including the installation box, the left side lower part of installation box is provided with the square hole, the inboard bead of square hole is fixed with the second aspiration fan through the welding layer board, the right side of installation box is fixed with the semiconductor refrigeration piece through leading to the inslot, the inner chamber upper portion of installation box is provided with the deep bead, be provided with the gap between deep bead and the installation box inner wall, the fluid-discharge tube that runs through in the protection box is installed to the bottom of installation box, install the solenoid valve on the fluid-discharge tube, level sensor is installed to the inner chamber bottom of installation box, level sensor signal connection director, solenoid valve, semiconductor refrigeration piece and second aspiration fan signal connection relay control module.

Furthermore, the controller is electrically connected with a mains supply module through a leakage protector, and the semiconductor refrigeration sheet is electrically connected with the relay control module through a series voltage reducer and a rectifier.

Furthermore, noctilucent aluminum plates are embedded and fixed around the trapezoidal hole sections on the outer side.

Furthermore, the end face of the arc-shaped plate is provided with anti-skid grains.

Further, the bottom protrusion of grid plate installs the normally closed button, normally closed button concatenates on the circuit that lift control module and controller control descend.

Furthermore, the left side of the bottom of the installation box body is higher than the right side of the bottom of the installation box body, and the top of the liquid discharge pipe is positioned at the lowest position of the inner cavity of the installation box body.

Furthermore, the conical hard rubber tube is made of high-concentration polyethylene material.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the fixed electric wire is inserted into the wire distributing device, the electric wire inlet end is clamped by the limiting device, and is taken out of the protective box body along with the lifting of the electric push rod, and the electric push rod is lifted; the case lid is backed up to the pole of buckling, and then can install electrical equipment and accomplish the wiring on installation device, temperature signal when temperature sensor responds surpasss the controller and sets up the threshold value, open two electric gate and first suction fan and accomplish the heat dissipation, when humidity signal when humidity sensor responds surpasss the controller and sets up the threshold value, semiconductor refrigeration piece and second suction fan work, the inside air current of protection box flows, and come out and discharge the moisture in the air through refrigeration separation, reduce humidity, if humidity and temperature all trigger controller during operation, both cooperate the completion, the device can prevent that the wiring from knoing, and convenient for operation, degree of automation is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial top view of FIG. 1;

FIG. 3 is a schematic diagram of the structure of the branching device in FIG. 1;

FIG. 4 is a schematic structural view of the limiting device in FIG. 1;

FIG. 5 is a schematic view of the mounting device of FIG. 1;

FIG. 6 is a schematic diagram of the system of the present invention;

FIG. 7 is a schematic view of the air circulation device shown in FIG. 2;

fig. 8 is a schematic structural diagram of the refrigeration device in fig. 2.

In the drawings, the components represented by the respective reference numerals are listed below:

1-protective box body, 2-transparent toughened glass plate, 3-channel steel section, 4-vertical plate, 5-box cover, 6-U-shaped seat, 7-branching device, 8-electric push rod, 9-connecting block, 10-bending rod, 11-air circulation device, 12-limiting device, 13-mounting device, 14-refrigeration device, 15-lifting control module, 16-controller, 17-temperature sensor, 18-humidity sensor, 19-relay control module, 30-through groove, 700-first T-shaped block, 701-first mounting hole, 702-threading hole, 703-conical hard rubber tube, 704-circular shearing groove, 705-baffle, 706-manual telescopic rod, 707-threaded hole plate, 708-adjusting bolts, 709-arched blocks, 710-bolt and nut assemblies, 120-rectangular blocks, 121-rectangular hole sections, 122-trapezoidal hole sections, 123-arched plates, 130-L-shaped rods, 131-grid plates, 132-cross beams, 133-square-shaped thin aluminum plates, 110-second T-shaped blocks, 111-second mounting holes, 112-vent holes, 113-first electric gates, 114-second electric gates, 115-metal filter screens, 116-filters, 117-first suction fans, 140-mounting boxes, 141-square holes, 142-second suction fans, 143-semiconductor refrigeration sheets, 144-wind shields, 145-liquid discharge pipes, 146-liquid level sensors and 147-electromagnetic valves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: a safety protection device for an electric power system comprises a protection box body 1, wherein transparent toughened glass plates 2 are fixedly installed above the left side and the right side of the protection box body 1 through groove embedding, equal-width groove steel sections 3 and vertical plates 4 with equal height are respectively fixed on the left side and the right side of the bottom of the protection box body 1, a box cover 5 with a sealing rubber ring is hinged to the top of the protection box body 1, U-shaped seats 6 are detachably installed on the front side and the rear side of the left side of the bottom of the box cover 5, a branching device 7 is fixedly installed on the lower portion of the left side of the protection box body 1 through groove embedding and protruding, electric push rods 8 are vertically and fixedly installed on the front side and the rear side of the bottom of an inner cavity of the protection box body 1, connecting blocks 9 are fixed on the tops of the electric push rods 8, bending rods 10 are rotatably installed on the tops of the U-shaped, a refrigerating device 14 and an air circulating device 11 are embedded and fixed in the middle of the front surface and the rear surface of the protective box body 1 through grooves, a lifting control module 15 is embedded and installed above the rear surface of the protective box body 1, and through grooves 30 are oppositely arranged on two side walls of the channel steel section 3;

the wire dividing device 7 comprises a first T-shaped block 700 with a sealing rubber ring, the upper and lower convex parts of the first T-shaped block 700 are provided with first mounting holes 701, the middle part of the first T-shaped block 700 is provided with a plurality of wire holes 702 at uniform intervals, the left side edge opening of the wire holes 702 is coaxially fixed with a conical hard rubber tube 703, the outer wall of the conical hard rubber tube 703 is provided with a plurality of circular shearing grooves 704 at uniform intervals, the upper and lower parts of the inner wall of the outermost circular shearing groove 704 are respectively clamped with a baffle 705, the outer surface of the baffle 705 is horizontally fixed with a manual telescopic rod 706, the outer end of the manual telescopic rod 706 is fixed with a threaded hole plate 707, the inner cavity of the threaded hole plate 707 is screwed with an adjusting bolt 708, the inner end of the adjusting bolt 708 is rotatably provided with an arched block 709 with a rubber pad, and the front;

the limiting device 12 comprises a rectangular block 120, a plurality of limiting through holes are uniformly and transversely arranged on the rectangular block 120 in a penetrating mode, each limiting through hole comprises a rectangular hole section 121, two sides of each rectangular hole section 121 are communicated with and provided with a trapezoidal hole section 122, and arc-shaped plates 123 which are mutually overlapped up and down are rotatably arranged on the outer edge openings of the rectangular hole sections 121 through rotating shafts, torsion springs and supporting angle irons up and down;

the mounting device 13 comprises L-shaped rods 130 arranged in parallel in the front and back, grid plates 131 are fixed on the horizontal portions of the inner walls of the two L-shaped rods 130 through screws, cross beams 132 are fixed on the inner vertical walls of the two L-shaped rods 130 in the front and back at equal intervals from top to bottom, a back-shaped thin aluminum plate 133 is fixedly mounted between the two cross beams 132 at any same height in the front and back, the lifting control module 15 is in signal connection with the controller 16, the controller 16 is in signal connection with the temperature sensor 17, the humidity sensor 18 and the relay control module 19, and the relay control module 19 is in signal connection with the electric push rod 8.

Wherein, case lid 5 is connected with U type seat 6 through countersunk head bolt, can open case lid 5 manually through dismantling countersunk head bolt when electric putter 8 breaks down.

The air circulation device 11 comprises a second T-shaped block 110 with a sealing rubber ring, the upper and lower convex parts of the second T-shaped block 110 are provided with second mounting holes 111, the upper and lower parts of the middle part of the second T-shaped block 110 are provided with vent holes 112, the inner edge ports of the upper and lower vent holes 112 are respectively provided with a first electric gate 113 and a second electric gate 114, the outer ends of the upper and lower vent holes 112 are respectively detachably provided with a metal filter screen 115 and a filter 116, the inner cavity of the lower vent hole 112 is provided with a first suction fan 117 through a cushion block, the first electric gate 113, the second electric gate 114 and the first suction fan 117 are in signal connection with a relay control module 19, when a temperature sensor 18 detects that the temperature of the inner cavity of the protective box body 1 is higher, the controller 16 is used for matching with the relay control module 19 to open the first suction fan 117, the first electric gate 113 and the second, the heat dissipation is convenient, and the detachable metal filter screen 115 and the filter 116 are arranged to reduce dust entering.

The refrigerating device 14 comprises an installation box body 140, a square hole 141 is arranged at the lower part of the left side of the installation box body 140, a second suction fan 142 is fixed at the inner side edge opening of the square hole 141 through a welding supporting plate, a semiconductor refrigeration piece 143 is embedded and fixed at the right side of the installation box body 140 through a through groove, a wind shield 144 is arranged at the upper part of the inner cavity of the installation box body 140, a gap is arranged between the wind shield 144 and the inner wall of the installation box body 140, a liquid discharge pipe 145 penetrating through the protection box body 1 is arranged at the bottom of the installation box body 140, an electromagnetic valve 147 is arranged on the liquid discharge pipe 145, a liquid level sensor 146 is arranged at the bottom of the inner cavity of the installation box body 140, the liquid level sensor 146 is in signal connection with the controller 16, the electromagnetic valve 147, the semiconductor refrigeration piece 143 and the second suction fan 142 are in signal connection, the controller 16 is matched with the relay control module 19 to open the semiconductor refrigeration piece 143 and the second suction fan 142, air circulation heat dissipation is conducted on the inner cavity of the protective box body 1, moisture is condensed by the cold end of the semiconductor refrigeration piece 143, humidity is further reduced, and the condensed water is discharged by opening the electromagnetic valve 147 through the liquid level sensor 146 matched with the controller 16 and the relay control module 19.

The controller 16 is electrically connected with a commercial power module through a leakage protector, and the semiconductor refrigeration sheet 143 is electrically connected with the relay control module 19 through a series voltage reducer and a rectifier.

The periphery of the outer trapezoidal hole section 122 is embedded and fixed with a luminous aluminum plate, so that the wiring can be conveniently inserted in a dark place.

The terminal surface of arc 123 is provided with anti-skidding line, and the line setting is barb form, prevents that electric putter 8 from rising, and the electric wire separates with arc 123.

The bottom of the grid plate 131 is convexly provided with a normally closed button which is connected in series on a line for controlling the descending of the lifting control module 15 and the controller 16, and when the electric push rod 8 descends, the electric push rod can be automatically pressed to cut off the power, so that the operation is convenient.

The left side of the bottom of the installation box body 140 is higher than the right side of the bottom of the installation box body 140, and the top of the liquid discharge pipe 145 is positioned at the lowest position of the inner cavity of the installation box body 140, so that condensed water can be discharged in time.

The conical hard rubber tube 703 is made of high-concentration polyethylene material, and has the advantages of impact resistance, strong shock resistance, difficult aging, acid and alkali resistance, and long service life.

One specific application of this embodiment is: the channel steel section 3 can be fixed on the wall by the expansion bolt passing through the through channel 30, the cutter is used for cutting from the circular cutting groove 704, the conical hard rubber pipe 703 can be inserted into electric wires with different diameters, the arc block 709 and the bolt nut component 710 are used for clamping under the adjustment of the adjusting bolt 708 and the manual telescopic rod 706, the electric wires pass through the threading hole 702 and enter the trapezoidal hole section 122 and the rectangular hole section 121, the arc plate 123 is rotationally connected through the torsion spring and is set to be opened only by rotating right as shown in figure 4, and then the electric wires are difficult to pull out, the electric push rod 8 is extended by the lifting control module 15, the controller 16 and the relay control module 19, the bent rod 10 pushes the box cover 5 open, the electric equipment is installed on the square-shaped thin aluminum plate 133 and the grid plate 131 and connected with the electric wires, then the box cover 5 is closed, when the temperature sensor 18 detects that the temperature of the inner cavity of, utilize controller 16 cooperation relay control module 19 to open first suction fan 117, first electronic gate 113 and second electronic gate 114 make the inner chamber air flow, be convenient for dispel the heat, set up detachable metal filter 115 and filter 116 simultaneously, it gets into to reduce the dust, when humidity transducer 18 detects protection box 1 inner chamber humidity is higher, utilize controller 16 cooperation relay control module 19 to open semiconductor refrigeration piece 143 and second suction fan 142, give the air cycle heat dissipation of protection box 1 inner chamber, moisture is by the cold junction condensation of semiconductor refrigeration piece 143, and then reduce humidity, the comdenstion water passes through level sensor 146 cooperation controller 16 and relay control module 19 and opens solenoid valve 147 and discharges, both can carry out temperature and humidity control by the simultaneous working.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. The utility model provides a safety device for electric power system, includes protection box (1), its characterized in that: the protective box comprises a protective box body (1), wherein transparent toughened glass plates (2) are fixedly mounted above the left side and the right side of the protective box body (1) through the embedding of through grooves, the left side and the right side of the bottom of the protective box body (1) are respectively provided with equal-width channel steel sections (3) and vertical plates (4) with equal heights, the top of the protective box body (1) is hinged with a box cover (5) with a sealing rubber ring, U-shaped seats (6) are detachably mounted around the left side of the bottom of the box cover (5), a branching device (7) is fixedly mounted on the lower portion of the left side of the protective box body (1) through the embedding of through grooves in a protruding manner, electric push rods (8) are vertically and fixedly mounted around the left side of the bottom of an inner cavity of the protective box body (1), connecting blocks (9) are fixed at the tops of the electric push rods (8), bending rods (10) are rotatably mounted with the U, a limiting device (12) is fixed at the bottom of the left side of the mounting device (13), a refrigerating device (14) and an air circulating device (11) are embedded and fixed in the middle of the front surface and the rear surface of the protective box body (1) through grooves, a lifting control module (15) is embedded and installed above the rear surface of the protective box body (1), and through grooves (30) are oppositely arranged on two side walls of the channel steel section (3);

the wire distributing device (7) comprises a first T-shaped block (700) with a sealing rubber ring, wherein the upper and lower protruding parts of the first T-shaped block (700) are provided with first mounting holes (701), the middle part of the first T-shaped block (700) is uniformly provided with a plurality of wire through holes (702) at intervals, the left side edge opening of each wire through hole (702) is coaxially fixed with a conical hard rubber pipe (703), the outer wall of each conical hard rubber pipe (703) is uniformly provided with a plurality of circular shearing grooves (704) at intervals, the upper and lower inner walls of the outermost circular shearing grooves (704) are respectively clamped with a baffle (705), the outer surface of each baffle (705) is horizontally fixed with a manual telescopic rod (706), the outer end of the manual telescopic rod (706) is fixed with a threaded hole plate (707), the inner cavity of the threaded hole plate (707) is in threaded connection with an adjusting bolt (708), and the inner end of the adjusting bolt (708) is rotatably provided with an arch-shaped block, the two opposite arch blocks (709) are connected back and forth through bolt and nut assemblies (710);

the limiting device (12) comprises a rectangular block (120), a plurality of limiting through holes are uniformly and transversely arranged on the rectangular block (120) in a penetrating mode, each limiting through hole comprises a rectangular hole section (121), two sides of each rectangular hole section (121) are communicated with and provided with a trapezoidal hole section (122), and arc-shaped plates (123) which are mutually overlapped up and down are rotatably arranged on the outer edge opening of each rectangular hole section (121) through rotating shafts, torsion springs and supporting angle irons;

installation device (13) are including front and back parallel arrangement's L type pole (130), two the inner wall horizontal part of L type pole (130) is fixed with grid plate (131) through the screw, two from top to bottom evenly spaced and is fixed with crossbeam (132) in the interior perpendicular wall from the top down of L type pole (130), two around any same height fixed mounting has back word type thin aluminum plate (133) between crossbeam (132), lift control module (15) signal connection has controller (16), controller (16) signal connection has temperature sensor (17), humidity transducer (18) and relay control module (19), relay control module (19) signal connection has electric putter (8).

2. A safety shield for an electrical power system as defined in claim 1, wherein: the box cover (5) is connected with the U-shaped seat (6) through a countersunk head bolt.

3. A safety shield for an electrical power system as defined in claim 1, wherein: air circulating device (11) is including second T type piece (110) of taking sealing rubber ring, the upper and lower bulge of second T type piece (110) all is provided with second mounting hole (111), all be provided with air vent (112) about the middle part of second T type piece (110), two from top to bottom first electronic gate (113) and second electronic gate (114) are installed respectively to the inner bead mouth of air vent (112), two from top to bottom the outer end demountable installation of air vent (112) has metal filter screen (115) and filter (116), lower part first inhaling fan (117) are installed through the cushion to the inner chamber of air vent (112), first electronic gate (113), second electronic gate (114) and first inhaling fan (117) all with relay control module (19) signal connection.

4. A safety shield for an electrical power system as defined in claim 1, wherein: refrigerating plant (14) is including installation box (140), the left side lower part of installation box (140) is provided with square hole (141), the inboard bead of square hole (141) is fixed with second suction fan (142) through the welding layer board, the right side of installation box (140) is fixed with semiconductor refrigeration piece (143) through leading to the inslot, the inner chamber upper portion of installation box (140) is provided with deep bead (144), be provided with the gap between deep bead (144) and installation box (140) inner wall, fluid-discharge tube (145) that run through in protection box (1) are installed to the bottom of installation box (140), install solenoid valve (147) on fluid-discharge tube (145), level sensor (146) are installed to the inner chamber bottom of installation box (140), level sensor (146) signal connection controller (16), solenoid valve (147), The semiconductor refrigeration piece (143) and the second suction fan (142) are in signal connection with the relay control module (19).

5. The safety device according to claim 4, wherein: the controller (16) is electrically connected with a mains supply module through a leakage protector, and the semiconductor refrigeration sheet (143) is electrically connected with the relay control module (19) through a series voltage reducer and a rectifier.

6. A safety shield for an electrical power system as defined in claim 1, wherein: and noctilucent aluminum plates are embedded and fixed around the outer trapezoidal hole section (122).

7. A safety shield for an electrical power system as defined in claim 1, wherein: the end face of the arc-shaped plate (123) is provided with anti-skid grains.

8. The safety protection device for the power system as claimed in claim 1, wherein a normally closed button is installed at the bottom of the grid plate (131) in a protruding mode, and the normally closed button is connected in series on a line where the lifting control module (15) and the controller (16) control descending.

9. The safety protection device for the power system as claimed in claim 4, wherein the bottom of the installation box body (140) is higher at the left and the right, and the top of the drain pipe (145) is located at the lowest position of the inner cavity of the installation box body (140).

10. The safety protection device for the power system as claimed in claim 1, wherein the tapered hard rubber tube (703) is made of high-concentration polyethylene material.

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