CN111769463B - Outdoor high-voltage metering box protection device and use method thereof - Google Patents
Outdoor high-voltage metering box protection device and use method thereof Download PDFInfo
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- CN111769463B CN111769463B CN202010659496.9A CN202010659496A CN111769463B CN 111769463 B CN111769463 B CN 111769463B CN 202010659496 A CN202010659496 A CN 202010659496A CN 111769463 B CN111769463 B CN 111769463B
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- heat exchange
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
- H02B1/48—Mounting of devices therein
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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Abstract
The invention discloses an outdoor high-voltage metering box protection device and a use method thereof, belonging to the field of outdoor high-voltage metering boxes. Compared with the defects that the traditional fuse is low in initial investment cost, high in maintenance cost, and needs to be replaced after being burnt out, the device is low in maintenance cost, can jump off in overload, can be used after being reset normally, cannot cause the situation that the fuse needs to be replaced in overload, and can play a role in circuit breaking protection when a box door is opened when regular maintenance is needed, so that the safety of maintenance personnel is improved, personnel and an outdoor high-voltage metering box are protected, the operation is convenient, the structure maintenance cost is low, and the reliability is high.
Description
Technical Field
The invention relates to the field of outdoor high-voltage metering boxes, in particular to an outdoor high-voltage metering box protection device and a using method thereof.
Background
The high-voltage metering box is mainly used for metering high-voltage electric energy, is particularly suitable for users of medium and small transformers, can completely and accurately meter active electric energy and reactive electric energy, is ingenious and reasonable in product design, compact in structure, attractive and elegant, each part is tightly blocked, and the electricity larceny prevention capability is strong.
The existing high-voltage metering box generally does not have a protection device, when the high-voltage metering box has a short-circuit fault, a previous-stage demarcation switch is triggered to trip, even a trip-out event of the whole 10kv line is triggered, a single-family power failure is converted into a multi-family power failure or a whole 10kv line power failure, the power failure range is enlarged, or a fuse is generally used, but the maintenance cost of the fuse is high, the fuse needs to be replaced after being burnt out, the fuse does not have economy, a single circuit cannot be actively closed when a person overhauls the high-voltage metering box, the single circuit can only be closed from the previous stage, the domestic electricity consumption of residents or the electricity consumption of factories and the like are influenced, and therefore, the outdoor high-voltage metering box protection device and the using method thereof are provided to solve the problems.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a protection device for an outdoor high-voltage metering box and a using method thereof, which have the advantages of actively and passively protecting the high-voltage metering box from short circuit, solve the problems that the conventional high-voltage metering box generally does not have a protection device per se, when the high-voltage metering box has short-circuit fault, the upper-stage demarcation switch is tripped, even the override trip event of the whole 10kv line is triggered, the single-household power failure is converted into multi-household power failure or the power failure of the whole 10kv line, the power failure range is expanded, or the fuse is generally used, but the maintenance cost of the fuse is high, the fuse needs to be replaced after being burnt out, the economy is not achieved, the single circuit can not be closed initiatively when the personnel overhaul the high-voltage metering box, can only follow the complete shutdown of last level, influences the problem of resident's domestic power consumption or mill power consumption etc..
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A box door is hinged to the front side of the box body, a heat exchange box is fixedly mounted on the inner bottom wall of the box body, a glass heat exchange tube is fixedly mounted inside the heat exchange box, a containing cavity is formed in the inner wall of the glass heat exchange tube, mercury is filled inside the containing cavity, a first cable penetrates through the inner side of the glass heat exchange tube, the bottom end of the first cable penetrates through and extends to the bottom of the box body, lifting mechanisms are integrally formed on the left side and the right side of the glass heat exchange tube, a movable plate is contacted with the top of each lifting mechanism, a second cable fixedly connected with each lifting mechanism is penetrated through the movable plate, the top end of each second cable penetrates through and extends to the top of the box body, sliding mechanisms are fixedly mounted on the left side and the right side of each movable plate, and one side, away from the two sliding mechanisms, is contacted with the inner wall of the box body, the utility model discloses a box, including box, installation piece, clamping groove, movable block, dead lever, fly leaf, fixed plate, dead lever, fly leaf, first cable, second cable, the draw-in groove has all been seted up to the inside left and right sides of box, two the draw-in groove is located two slide mechanism's top respectively, the back of the inside of box and the equal fixed mounting in the back of chamber door have a movable block, two the movable block all includes the installation piece, two the installation piece respectively with the inner wall of box and the back fixed connection of chamber door, two the bottom of installation piece all rotates and is connected with the U-shaped piece, two it has the folding rod to articulate between the movable block, the last articulated pull rod that has of folding rod, the bottom interlude of pull rod has the dead lever, the bottom and fly leaf sliding connection of dead lever, first cable and the relative one end difference fixedly connected with inserted bar and intubate of second cable, the inserted bar bottom is pegged graft in the inside of intubate and with the inner wall sliding connection of intubate.
Preferably, the hoisting mechanism includes the stopper pipe, the bottom of stopper pipe is linked together with holding the chamber, the inboard sliding connection of stopper pipe has the ball stopper, the top fixed mounting of ball stopper has the ejector pin, the top of ejector pin extends to the top of stopper pipe and contacts with the fly leaf.
Preferably, two slide mechanism all includes the sleeve pipe, two the sleeve pipe is fixed mounting respectively in the left and right sides of fly leaf, two the equal sliding connection in sheathed tube inboard has the slide bar, two the slide bar one end that carries on the back mutually extends to two sheathed tube outsides respectively, two the slide bar one end that carries on the back mutually all rotates and is connected with the rubber gyro wheel, two one side of rubber gyro wheel all with the inside contact of box, two the equal fixedly connected with spring of the relative one end of slide bar, two the other end of spring respectively with two sheathed tube inner wall fixed connection.
Preferably, the back of the box body is fixedly connected with a limiting strip, the back of the movable plate is provided with a limiting groove, and the limiting strip is located on the inner side of the limiting groove and is in sliding connection with the inner wall of the limiting groove.
Preferably, a disc is integrally formed at the top of the fixing rod, a pull ring is fixedly connected to the bottom end of the pull rod, the fixing rod is inserted into the inner side of the pull ring, and the pull ring is located at the bottom of the disc.
Preferably, the glass heat exchange tube is fixedly connected with a red copper heat exchange tube, and the outer surface of the first cable is in contact with the inner wall of the red copper heat exchange tube.
Preferably, the distance between the pull ring and the movable plate is equal to the distance between the ball plug and the inner top wall of the plug tube.
Preferably, the distance between the rubber roller and the clamping groove is equal to the distance between the ball plug and the inner top wall of the plug tube.
The invention also provides a using method of the outdoor high-voltage metering box protection device, which comprises the following steps:
step one, when a short circuit phenomenon occurs inside the box body, the temperature of the first cable is increased due to resistance, and therefore mercury in the glass heat exchange tube is heated and expanded;
step two, mercury in the glass heat exchange tube exerts pressure on the lifting mechanism, and then the movable plate is pushed to move upwards;
step three, when the inserted bar and the insertion pipe are gradually separated along with the movement of the movable plate, and the sliding mechanism is clamped into the clamping groove when the inserted bar is separated from the insertion pipe, so that the power-off protection of the outdoor high-voltage metering box is realized;
step four, opening the box door when the box body is not short-circuited and needs to be overhauled by personnel;
fifthly, the positions of the two movable blocks can be changed in the opening process of the box door, the distance between the two mounting blocks is lengthened, the folding rod and the U-shaped block are connected and kept, and meanwhile, the folding rod can be changed into a straightening state from a folding state in the process;
step six, the folding rod stretches and can drive the pull rod to rise to cooperation disc and pull ring pulling dead lever drive fly leaf shift up, let inserted bar and intubate break away from, and then play the outage protection to outdoor high-voltage metering box, make things convenient for maintainer's maintenance work and safety.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme, adopt mechanical type circuit breaker principle, can take place the short circuit overload accident in outdoor high-voltage metering box, timely carry out short-circuit protection to the circuit, relative with traditional fuse initial stage investment cost low, but cost of maintenance is high, burn out the back and just need renew, the device cost of maintenance is low, overload can jump off, normal back resets and just can be used, the overload condition that just needs to trade the fuse just can not appear, when needs periodic overhaul, also can play the protection of opening circuit when opening the chamber door, thereby improve maintainer's security, protect personnel and outdoor high-voltage metering box, when convenient operation, structure cost of maintenance is low, high reliability.
(2) This scheme, because stopper pipe and the intraductal chamber intercommunication that holds of glass heat transfer, the pressure that gets into behind the mercury inflation and hold the chamber and promote the stopper pipe promotes the ball stopper, drives the ejector pin and shifts up, and then upwards the top with the fly leaf, the thermal expansion of mercury is effectual, can promote structure reaction rate, in time to the circuit break.
(3) This scheme, when the rubber gyro wheel moved the draw-in groove, utilized the elasticity of spring, popped out the inside of slide bar with the slide bar, and then let rubber gyro wheel and draw-in groove cooperation, blocked the hungry position of fly leaf, avoided when not handling the short circuit problem, the temperature reduces that mercury contracts back and causes the fly leaf to move down and arouse the short circuit accident once more.
(4) According to the scheme, the limit strips are matched with the limit grooves, so that the movable plate is prevented from being limited in balance when moving up and down, the movable plate is prevented from inclining, and the stability and the reliability of the device are improved.
(5) This scheme, when the pull rod moves up, pull ring and disc contact, and then drive the dead lever and shift up.
(6) This scheme, red copper heat exchange tube can increase the heat transfer area of glass heat exchange tube to improve being heated of glass heat exchange tube even, play certain protection effect to the glass heat exchange tube simultaneously, improve the expansion rate of mercury, strengthen the sensitivity of circuit breaking mechanism.
(7) This scheme, because the interval of pull ring and fly leaf equals the distance of ball stopper and stopper intraductal roof to the interval of rubber gyro wheel and draw-in groove equals the distance of ball stopper and stopper intraductal roof, and the ball stopper shifts up and can not touch the pull ring when driving the fly leaf activity and lead to the chamber door to open, and two kinds of circuit breaking modes can block the inside of draw-in groove with rubber gyro wheel card.
Drawings
FIG. 1 is a front cross-sectional structural schematic view of the present invention;
FIG. 2 is a side cross-sectional structural view of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of portion B of FIG. 1 according to the present invention;
fig. 5 is an enlarged schematic view of the portion C in fig. 1 according to the present invention.
The reference numbers in the figures illustrate:
1. a box body; 2. a box door; 3. a heat exchange box; 4. a glass heat exchange tube; 5. an accommodating chamber; 6. a first cable; 7. a lifting mechanism; 701. plugging the tube; 702. a ball plug; 703. a top rod; 8. a movable plate; 9. a sliding mechanism; 901. a sleeve; 902. a slide bar; 903. a rubber roller; 904. a spring; 10. a movable block; 101. mounting blocks; 102. a U-shaped block; 11. a folding bar; 12. a pull rod; 121. a pull ring; 13. fixing the rod; 131. a disc; 14. a card slot; 15. a limiting strip; 16. a limiting groove; 17. a second cable; 18. inserting a rod; 19. inserting a tube; 20. red copper heat exchange tube.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-5, a protection device for an outdoor high-pressure metering box comprises a box body 1, a box door 2 is hinged on the front surface of the box body 1, a heat exchange box 3 is fixedly installed on the inner bottom wall of the box body 1, a glass heat exchange tube 4 is fixedly installed inside the heat exchange box 3, a containing cavity 5 is arranged on the inner wall of the glass heat exchange tube 4, mercury is filled inside the containing cavity 5, a first cable 6 is inserted into the inner side of the glass heat exchange tube 4, the bottom end of the first cable 6 penetrates through and extends to the bottom of the box body 1, lifting mechanisms 7 are integrally formed on the left side and the right side of the glass heat exchange tube 4, a movable plate 8 is contacted with the top of the lifting mechanisms 7, a second cable 17 fixedly connected with the movable plate 8 is inserted into the movable plate 8, the top end of the second cable 17 penetrates through and extends to the top of the box body 1, sliding mechanisms 9 are fixedly installed on the left side and the right side of the movable plate 8, one sides of the two sliding mechanisms 9 far away from the movable plate 8 are contacted with the inner wall of the box body 1, the left side and the right side of the interior of the box body 1 are both provided with clamping grooves 14, the two clamping grooves 14 are respectively positioned at the tops of the two sliding mechanisms 9, movable blocks 10 are fixedly arranged on the back surface of the interior of the box body 1 and the back surface of the box door 2, the two movable blocks 10 respectively comprise mounting blocks 101, the two mounting blocks 101 are respectively fixedly connected with the inner wall of the box body 1 and the back surface of the box door 2, the bottoms of the two mounting blocks 101 are respectively and rotatably connected with a U-shaped block 102, a folding rod 11 is hinged between the two movable blocks 10, a pull rod 12 is hinged on the folding rod 11, a fixed rod 13 is inserted at the bottom end of the pull rod 12, the bottom end of the fixed rod 13 is in sliding connection with a movable plate 8, the ends of the first cable 6 opposite to the second cable 17 are respectively and fixedly connected with an inserting rod 18 and an inserting pipe 19, the bottom end of the inserting rod 18 is inserted in the interior of the inserting pipe 19 and is in sliding connection with the inner wall of the inserting pipe 19, the mechanical breaker principle is adopted, when a short-circuit overload accident happens to the outdoor high-voltage metering box, timely carry out short-circuit protection to the circuit, relatively with traditional fuse initial stage investment cost low, but cost of maintenance is high, just need change new after burning out, the device cost of maintenance is low, overload can jump off, reset just can be used after normally, the overload condition that just needs to change the fuse can not appear, when needs periodic overhaul, also can play the protection of opening circuit when opening chamber door 2, thereby improve maintainer's security, protect personnel and outdoor high-voltage metering box, when convenient operation, structure cost of maintenance is low, high reliability.
Further, hoist mechanism 7 includes stopper pipe 701, the bottom of stopper pipe 701 is linked together with holding chamber 5, the inboard sliding connection of stopper pipe 701 has ball stopper 702, the top fixed mounting of ball stopper 702 has ejector pin 703, the top of ejector pin 703 extends to the top of stopper pipe 701 and contacts with fly leaf 8, because stopper pipe 701 and the interior chamber 5 intercommunication that holds of glass heat exchange tube 4, the entering after the mercury inflation holds chamber 5 and promotes the pressure promotion ball stopper 702 of stopper pipe 701, drive ejector pin 703 and shift up, and then upwards the top with fly leaf 8 moves, the thermal expansion of mercury is effectual, can promote structure reaction rate, in time to the circuit break.
Further, two slide mechanism 9 all include sleeve 901, two sleeve 901 fixed mounting respectively in the left and right sides of fly leaf 8, the equal sliding connection in inboard of two sleeve 901 has slide bar 902, the one end that two slide bars 902 carried on the back extends to the outside of two sleeve 901 respectively, the one end that two slide bars 902 carried on the back all rotates and is connected with rubber roller 903, one side of two rubber roller 903 all with the inside contact of box 1, the equal fixed connection in one end that two slide bars 902 are relative has spring 904, the other end of two spring 904 respectively with the inner wall fixed connection of two sleeve 901, when the rubber roller 903 moves to the card slot 14, the sliding rod 902 is ejected out of the inner part of the sliding rod 902 by the elastic force of the spring 904, further, the rubber roller 903 is matched with the slot 14 to lock the position of the movable plate 8, so as to avoid short circuit accidents caused by downward movement of the movable plate 8 due to mercury retraction caused by temperature reduction when short circuit problems are not processed.
Furthermore, the back of the box body 1 is fixedly connected with a limiting strip 15, the back of the movable plate 8 is provided with a limiting groove 16, the limiting strip 15 is located on the inner side of the limiting groove 16 and is in sliding connection with the inner wall of the limiting groove 16, and the limiting strip 15 is matched with the limiting groove 16, so that the movable plate 8 is prevented from being balanced when the movable plate 8 moves up and down, the movable plate 8 is prevented from inclining, and the stability and reliability of the device are improved.
Furthermore, a disc 131 is integrally formed at the top of the fixing rod 13, a pull ring 121 is fixedly connected to the bottom end of the pull rod 12, the fixing rod 13 is inserted into the inner side of the pull ring 121, the pull ring 121 is located at the bottom of the disc 131, and when the pull rod 12 moves upwards, the pull ring 121 contacts with the disc 131, so that the fixing rod 13 is driven to move upwards.
Further, fixedly connected with red copper heat exchange tube 20 on the glass heat exchange tube 4, the surface of first cable 6 and the inner wall contact of red copper heat exchange tube 20, red copper heat exchange tube 20 can increase the heat transfer area of glass heat exchange tube 4 to improve being heated of glass heat exchange tube 4 evenly, play certain protection effect to glass heat exchange tube 4 simultaneously, improve the expansion rate of mercury, strengthen the sensitivity of circuit breaking mechanism.
Furthermore, the distance between the pull ring 121 and the movable plate 8 is equal to the distance between the ball plunger 702 and the inner top wall of the plug tube 701, and the ball plunger 702 moves upwards to drive the movable plate 8 to move without touching the pull ring 121, so that the box door 2 is not opened.
Further, the distance between the rubber roller 903 and the clamping groove 14 is equal to the distance between the ball plug 702 and the inner top wall of the plug tube 701, and the rubber roller 903 can be clamped into the clamping groove 14 in two breaking modes.
The invention also provides a using method of the outdoor high-voltage metering box protection device, which comprises the following steps:
step one, when a short circuit phenomenon occurs inside the box body 1, the temperature of the first cable 6 is increased due to resistance, and therefore mercury in the glass heat exchange tube 4 is heated and expanded;
step two, mercury in the glass heat exchange tube 4 applies pressure to the lifting mechanism 7, and then the movable plate 8 is pushed to move upwards;
step three, when the inserting rod 18 and the inserting tube 19 are gradually separated along with the movement of the movable plate 8, and the sliding mechanism 9 is clamped into the clamping groove 14 when the inserting rod 18 is separated from the inserting tube 19, so that the power-off protection of the outdoor high-voltage metering box is realized;
step four, when the box body 1 is not short-circuited and needs to be overhauled by personnel, the box door 2 is opened;
step five, the positions of the two movable blocks 10 can be changed in the opening process of the box door 2, the distance between the two mounting blocks 101 is lengthened, the folding rod 11 is connected with the U-shaped block 102 for keeping, and meanwhile, the folding rod 11 can be changed into a straightening state from a folding state in the process;
step six, the folding rod 11 is straightened to drive the pull rod 12 to ascend, and the fixed rod 13 is pulled by the disc 131 and the pull ring 121 to drive the movable plate 8 to move upwards, so that the inserted rod 18 is separated from the insertion tube 19, and the outdoor high-voltage metering box is protected from power failure, and the overhaul work and the safety of maintainers are facilitated.
The working principle is as follows: when a short circuit phenomenon occurs inside the box body 1, the temperature of the first cable 6 is increased due to resistance, so that mercury inside the glass heat exchange tube 4 is heated and expanded, the mercury inside the glass heat exchange tube 4 applies pressure to the lifting mechanism 7, so that the movable plate 8 is pushed to move upwards, when the movable plate 8 moves, the inserted rod 18 and the insertion tube 19 are gradually separated, the sliding mechanism 9 is clamped into the clamping groove 14 when the inserted rod 18 is separated from the insertion tube 19, so that power-off protection of the outdoor high-voltage metering box is achieved, when the box body 1 is not short-circuited and needs personnel to overhaul, the box door 2 is opened, the positions of the two movable blocks 10 are changed in the opening process of the box door 2, the distance between the two installation blocks 101 is lengthened, the folding rod 11 is kept through connection between the folding rod 11 and the U-shaped block 102, and the folding rod 11 is changed from a folded state to a straightened state in the process, the folding rod 11 drives the pull rod 12 to rise when being straightened, and the disc 131 and the pull ring 121 are matched to pull the fixed rod 13 to drive the movable plate 8 to move upwards, so that the inserted rod 18 is separated from the inserted tube 19, the outdoor high-voltage metering box is protected from power failure, and the overhaul work and safety of maintainers are facilitated. Adopt mechanical type circuit breaker principle, can take place the short circuit overload accident in outdoor high-voltage metering box, timely carry out short-circuit protection to the circuit, relative with traditional fuse initial investment cost low, but cost of maintenance is high, just need renew after burning out, the device cost of maintenance is low, overload can jump off, normal back resets and just can be used, the overload condition that just needs to trade the fuse just can not appear, when needs periodic overhaul, also can play the protection of breaking circuit when opening chamber door 2, thereby improve maintainer's security, protect personnel and outdoor high-voltage metering box, in the time of convenient operation, structure cost of maintenance is low, high reliability.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (8)
1. The utility model provides an outdoor high-voltage metering box protection device, includes box (1), the front of box (1) articulates there is chamber door (2), its characterized in that: the inner bottom wall of the box body (1) is fixedly provided with a heat exchange box (3), the inside of the heat exchange box (3) is fixedly provided with a glass heat exchange tube (4), the inner wall of the glass heat exchange tube (4) is provided with a containing cavity (5), mercury is filled in the containing cavity (5), a first cable (6) is inserted into the inner side of the glass heat exchange tube (4), the bottom end of the first cable (6) penetrates through and extends to the bottom of the box body (1), the left side and the right side of the glass heat exchange tube (4) are respectively and integrally formed with a lifting mechanism (7), the top of the lifting mechanism (7) is contacted with a movable plate (8), a second cable (17) fixedly connected with the movable plate (8) is inserted on the movable plate (8), the top end of the second cable (17) penetrates through and extends to the top of the box body (1), the left side and the right side of the movable plate (8) are respectively and fixedly provided with a sliding mechanism (9), one side, away from the movable plate (8), of each of the two sliding mechanisms (9) is in contact with the inner wall of the box body (1), the left side and the right side of the interior of the box body (1) are respectively provided with a clamping groove (14), the two clamping grooves (14) are respectively positioned at the tops of the two sliding mechanisms (9), the back of the interior of the box body (1) and the back of the box door (2) are respectively and fixedly provided with a movable block (10), the two movable blocks (10) respectively comprise an installation block (101), the two installation blocks (101) are respectively and fixedly connected with the inner wall of the box body (1) and the back of the box door (2), the bottoms of the two installation blocks (101) are respectively and rotatably connected with a U-shaped block (102), a folding rod (11) is hinged between the two movable blocks (10), a pull rod (12) is hinged on the folding rod (11), and a fixed rod (13) is inserted into the bottom end of the pull rod (12), the bottom end of the fixed rod (13) is connected with the movable plate (8) in a sliding manner, one ends of the first cable (6) and the second cable (17) opposite to each other are respectively and fixedly connected with an inserting rod (18) and an inserting pipe (19), and the bottom end of the inserting rod (18) is inserted into the inserting pipe (19) and is connected with the inner wall of the inserting pipe (19) in a sliding manner;
lifting mechanism (7) include stopcock (701), the bottom and the holding chamber (5) of stopcock (701) are linked together, the inboard sliding connection of stopcock (701) has ball stopper (702), the top fixed mounting of ball stopper (702) has ejector pin (703), the top of ejector pin (703) extends to the top of stopcock (701) and contacts with fly leaf (8).
2. An outdoor high-voltage metering box protection device according to claim 1, characterized in that: two slide mechanism (9) all include sleeve pipe (901), two sleeve pipe (901) fixed mounting is in the left and right sides of fly leaf (8) respectively, two the equal sliding connection in inboard of sleeve pipe (901) has slide bar (902), two the one end that slide bar (902) carried on the back mutually extends to the outside of two sleeve pipes (901) respectively, two the one end that slide bar (902) carried on the back mutually all rotates and is connected with rubber gyro wheel (903), two one side of rubber gyro wheel (903) all with the inside contact of box (1), two the equal fixedly connected with spring (904) of the relative one end of slide bar (902), two the other end of spring (904) respectively with the inner wall fixed connection of two sleeve pipes (901).
3. An outdoor high-voltage metering box protection device according to claim 1, characterized in that: the back fixedly connected with spacing strip (15) of box (1), restriction groove (16) have been seted up to the back of fly leaf (8), spacing strip (15) are located the inboard of restriction groove (16) and with the inner wall sliding connection of restriction groove (16).
4. An outdoor high-voltage metering box protection device according to claim 1, characterized in that: the disc (131) is integrally formed at the top of the fixing rod (13), the pull ring (121) is fixedly connected to the bottom end of the pull rod (12), the fixing rod (13) is inserted into the inner side of the pull ring (121), and the pull ring (121) is located at the bottom of the disc (131).
5. An outdoor high-voltage metering box protection device according to claim 1, characterized in that: the glass heat exchange tube (4) is fixedly connected with a red copper heat exchange tube (20), and the outer surface of the first cable (6) is in contact with the inner wall of the red copper heat exchange tube (20).
6. An outdoor high-voltage metering box protection device according to claim 4, characterized in that: the distance between the pull ring (121) and the movable plate (8) is equal to the distance between the ball plug (702) and the inner top wall of the plug tube (701).
7. An outdoor high-voltage metering box protection device according to claim 2, characterized in that: the distance between the rubber roller (903) and the clamping groove (14) is equal to the distance between the ball plug (702) and the inner top wall of the plug pipe (701).
8. A method of using the outdoor high voltage metering box protector of any one of claims 1-7, characterized in that: the method comprises the following steps:
step one, when a short circuit phenomenon occurs inside the box body (1), the temperature of the first cable (6) is increased due to resistance, and mercury in the glass heat exchange tube (4) is heated and expanded;
secondly, the mercury in the glass heat exchange tube (4) applies pressure to the lifting mechanism (7) to further push the movable plate (8) to move upwards;
thirdly, when the inserted rod (18) and the insertion pipe (19) are gradually separated along with the movement of the movable plate (8), and the sliding mechanism (9) is clamped into the clamping groove (14) when the inserted rod (18) is separated from the insertion pipe (19), so that the outdoor high-voltage metering box is protected from power failure;
step four, when the box body (1) is not short-circuited and needs to be overhauled by personnel, the box door (2) is opened;
fifthly, the positions of the two movable blocks (10) can be changed in the opening process of the box door (2), the distance between the two mounting blocks (101) is lengthened, the folding rod (11) is connected with the U-shaped block (102) for keeping, and meanwhile, the folding rod (11) can be changed into a straightening state from a folding state;
step six, the folding rod (11) is straightened to drive the pull rod (12) to ascend, and the disc (131) and the pull ring (121) are matched to pull the fixed rod (13) to drive the movable plate (8) to ascend, so that the inserted rod (18) is separated from the inserted pipe (19), and the outdoor high-voltage metering box is protected from power failure, and the overhaul work and safety of maintainers are facilitated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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