CN112467533B - Power distribution cabinet capable of overcurrent power-off and resetting automatically - Google Patents
Power distribution cabinet capable of overcurrent power-off and resetting automatically Download PDFInfo
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- CN112467533B CN112467533B CN202011264092.6A CN202011264092A CN112467533B CN 112467533 B CN112467533 B CN 112467533B CN 202011264092 A CN202011264092 A CN 202011264092A CN 112467533 B CN112467533 B CN 112467533B
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- distribution cabinet
- power distribution
- cabinet body
- annular
- lead
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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
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
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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
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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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
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses a power distribution cabinet capable of realizing overcurrent power failure and self-resetting, which comprises a power distribution cabinet body, wherein one side of the power distribution cabinet body is provided with a notch, a self-checking lead terminal board is fixedly welded at the notch, the outer end of the power distribution cabinet body is hinged with a protective cover at the outer side of a self-checking lead terminal, a plurality of lead holes are uniformly arranged on the protective cover at intervals, a plurality of annular grooves are arranged inside each lead hole, an annular air bag is arranged inside each annular groove, the annular air bags inside each lead hole are communicated through an air transmission pipeline, the side wall of the power distribution cabinet body is provided with pressure relief holes, and a blocking plate is arranged inside the pressure relief holes inside the power distribution cabinet body. The power distribution cabinet can perform power-off protection on overlarge current in the power distribution cabinet body, can be repeatedly used, has a good anti-explosion effect, can reduce dust from entering the cabinet body from a traditional power distribution cabinet wiring terminal, and is convenient for people to use.
Description
Technical Field
The invention relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet capable of being powered off in an overcurrent mode and capable of being reset automatically.
Background
The distribution cabinet (case) is a final-stage device of a distribution system and is divided into a power distribution cabinet (case), a lighting distribution cabinet (case) and a metering cabinet (case). The power distribution cabinet is a general name of a motor control center and is used in occasions with dispersed loads and less loops; motor control centers are used in load concentration and loop-rich situations and distribute the power of a circuit of a previous level of distribution equipment to nearby loads, and the level of equipment provides protection, monitoring and control for the loads.
With the continuous growth of scientific technology and the continuous improvement of safety awareness of people, the power distribution cabinet is provided with corresponding fuses in the using process, and the current fuses mainly comprise disposable fuses and recoverable fuses; to disposable fuse, in case blow, then need whole the change, this is very inconvenient to ordinary resident, and current recoverable fuse sets up the electrical components in the inside of switch board alone, can not use with the whole combination of switch board, and the function is comparatively single, and the supplementary switch board that can not be fine works, leads to the heat dissipation of switch board, explosion-proof and dustproof performance not enough.
Disclosure of Invention
The invention aims to provide a power distribution cabinet capable of being subjected to overcurrent and power off and self-resetting, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a power distribution cabinet capable of overcurrent power failure and self-resetting comprises a power distribution cabinet body, wherein a notch is formed in one side of the power distribution cabinet body, a self-checking lead terminal board is fixedly welded at the notch, the outer end of the power distribution cabinet body is hinged to the outer side of the self-checking lead terminal, a protective cover is hinged to the outer end of the power distribution cabinet body and is provided with a plurality of lead holes at uniform intervals, a plurality of annular grooves are formed in each lead hole, an annular air bag is arranged in each annular groove, the bottoms of the annular air bags in each lead hole are communicated with each other through an air transmission pipeline, the bottom ends of the air transmission pipelines are connected with a communication pipeline, an air inlet pipe is fixedly arranged at the bottom end of the communication pipeline, a cavity is formed in the side wall of the protective cover, a piston plate is arranged in the cavity, a spring is arranged at the bottom end of the piston plate, ropes are arranged on two sides of the bottom end of the piston plate, the bottom of rope passes the lateral wall of protection casing to fixed the setting on the connecting plate, the connecting plate is fixed to be set up on the lateral wall of the distribution cabinet body, the even a plurality of louvre that is provided with in upper end one side interval of the distribution cabinet body, the below that lies in the louvre on the distribution cabinet body side wall is provided with the pressure release hole, the internal portion of distribution cabinet is located the pressure release downthehole side and is provided with the shutoff board.
In a preferred embodiment, the self-checking lead terminal penetrates through the gap on the power distribution cabinet body, the self-checking lead terminal comprises a shell, one end of the shell is uniformly provided with a plurality of access lead terminals at intervals, one end of each access lead terminal is fixedly provided with a first conductive metal rod, one end of each first conductive metal rod penetrates through the side wall of the shell and is arranged in a detection cavity in the shell, a conductive block and a conductive piston are fixedly arranged in the detection cavity, one end of each first conductive metal rod is fixedly connected with the conductive block, one side of the conductive piston is fixedly provided with a second conductive metal rod, one end of each second conductive metal rod penetrates through the side wall of the shell, one end of the shell, far away from the access lead terminals, is uniformly provided with a plurality of lead-out terminals at intervals, and the interior of the lead-out terminal is provided with an installation cavity, the fixed reset spring that is provided with in inside of installation cavity, the fixed fly leaf that is provided with in one side of reset spring, the one end of second electrically conductive metal pole is fixed to be set up on the fly leaf, every the one end that is located electrically conductive piston in the detection intracavity portion is filled there is first expanding gas, every the outside in detection chamber all is provided with the annular chamber, one side of annular chamber all is fixed to be provided with heat-conducting ring, heat-conducting ring one side runs through the lateral wall of annular chamber and detects intracavity portion intercommunication, the inside of annular chamber is provided with annular seal piston, the fixed telescopic link that is provided with in one side of annular seal piston, the lateral wall setting that the casing was passed to telescopic link one end, the one end that is located the casing outside on the telescopic link is provided with the stay cord, the one end of stay cord is passed the leading wheel and is fixed to be set up on the closure plate.
In a preferred embodiment, one side of the annular cavity, which is located at the annular sealing piston, is filled with second inflation gas, one end of the annular cavity is provided with an air outlet, two ends of the casing, which are located at the lead-in terminal and are close to one side of the casing, which is located at the lead-in terminal, are provided with protective air bags, one end of the air outlet is arranged inside the protective air bags, a plurality of hanging rings are uniformly arranged at the outer side of the protective air bags at intervals, and hooks are fixedly arranged on the inner side of the protective cover.
In a preferred embodiment, the articulated outer end that sets up at the distribution cabinet body in protection casing upper end, the inboard embedding in bottom of protection casing is provided with adsorbs the iron plate, be provided with on the distribution cabinet body and adsorb iron plate assorted permanent magnet, all be provided with seal ring on the inside wall of protection casing, the articulated department of protection casing and distribution cabinet body is provided with the sealing washer.
In a preferred embodiment, annular gasbag and protective airbag all adopt fire-retardant, high pressure resistant rubber materials preparation to form, the even connecting piece that is provided with in interval on the annular gasbag lateral wall, the connecting piece sets up the inside at the ring channel, protective airbag is the rectangle setting, the protection casing adopts the preparation of high temperature resistant fire retardant material to form.
In a preferred embodiment, the inner sides of the heat dissipation hole and the pressure relief hole are both provided with filter screens, and one side wall of the blocking plate close to the pressure relief hole is provided with a sealing gasket.
In a preferred embodiment, the housing is made of a high-voltage-resistant insulating material, and an insulating plate is arranged inside the housing between the two annular cavities.
In a preferred embodiment, the first conductive metal rod and the second conductive metal rod are provided with sealing rings at contact positions with the housing, and the second conductive metal rod is connected with the housing in a sliding manner.
In a preferred embodiment, the pull rope is made of a high-temperature-resistant metal material, the guide wheels are arranged on the side wall of the upper end of the shell through supporting pieces, and a plurality of guide wheels are uniformly arranged at intervals.
In a preferred embodiment, a sealing ring is arranged at the joint of the telescopic rod and the shell, the telescopic rod is connected with the shell in a sliding manner, and a high-temperature-resistant sealing washer is arranged at the joint of the heat conduction ring and the detection cavity.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention is provided with the self-checking lead terminal, and the detection cavity, the annular cavity, the first expanding gas, the second expanding gas and the heat conducting ring are arranged in the self-checking lead terminal, when in use, the circuit can be rapidly heated when the internal circuit of the power distribution cabinet body is short-circuited, the short-circuit current can heat the first expanding gas in the detection cavity when passing through the self-checking lead terminal, the first expanding gas can push the conductive piston to be far away from the conductive block when encountering thermal expansion, so that the conductive piston is separated from the conductive block to break the circuit, the power distribution cabinet body can be protected, the temperature of the first expanding gas can be transmitted to the second expanding gas in the annular cavity through the heat conducting ring after being increased, the second expanding gas in the annular cavity can be subjected to thermal expansion, the expansion rod can be driven to move by the annular sealing piston when the second expanding gas, so that the expansion rod can lift the bottom end of the plugging plate through the pull rope, the air pressure in the power distribution cabinet body can be dispersed through the pressure relief hole, the phenomenon of explosion caused by high air pressure in the power distribution cabinet body when short circuit occurs is prevented, when the temperature in the self-checking lead terminal is recovered to be normal, the first expansion gas and the second expansion gas contract, the conductive piston is contacted with the conductive block again under the action of the reset spring, the circuit in the power distribution cabinet body is connected again, the telescopic rod moves towards the inner side of the annular cavity under the action of the pressure of the blocking plate and the negative pressure of the annular cavity, and the blocking plate falls to the pressure relief hole again to block the pressure relief hole;
2. according to the invention, the overcurrent protection device in the power distribution cabinet body is arranged together with the wiring terminal on the power distribution cabinet body, the protective cover is arranged on the outer side of the power distribution cabinet body, the lead in the power distribution cabinet body is connected with the self-checking lead terminal through the lead hole on the protective cover, the annular air bag is arranged at the lead hole, the protective cover needs to be rotated downwards when the protective cover is covered after the lead is installed, the piston plate in the protective cover moves under the action of the spring, the piston plate can guide gas in the cavity into the annular air bag, so that the annular air bag is expanded to be in close contact with the lead, the sealing performance of the lead hole can be ensured, dust is prevented from falling on the access lead terminal of the self-checking lead terminal, the dust can be reduced from entering the cabinet body from the traditional power distribution cabinet wiring terminal, and the use of people is facilitated;
3. according to the invention, the annular cavity, the exhaust port, the protective air bag, the hanging ring and the hook are arranged, the second expanding gas can enter the protective air bag through the exhaust port after encountering thermal expansion, the protective air bag can be rapidly expanded, the protective air bag can separate a short-circuited line from an adjacent line, the short-circuited line can be prevented from influencing other lines, and the protective air bag is hung on the inner side of the protective cover through the hanging ring during installation, so that the protective air bag is convenient to install and detach.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a self-test lead terminal of the present invention;
FIG. 3 is a schematic diagram of the internal structure of the self-test lead terminal of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 5 is an enlarged view of the structure at B in FIG. 3 according to the present invention;
FIG. 6 is a schematic cross-sectional view of the shield of the present invention;
FIG. 7 is a schematic view of the inner sidewall configuration of the shield of the present invention;
FIG. 8 is a schematic view of the structure of the air bag of the present invention;
in the figure: 1, a power distribution cabinet body; 2, a self-checking lead terminal; 3, a protective cover; 4, lead holes; 5, an annular groove; 6, an annular air bag; 7 gas transmission pipelines; 8, a protective air bag; 9 heat dissipation holes; 10 pressure relief holes; 11 a plugging plate; 12 a housing; 13, connecting a lead terminal; 14 a first conductive metal rod; 15 a detection chamber; 16 a conductive block; 17 an electrically conductive piston; 18 a second conductive metal rod; 19 leading out a lead terminal; 20 installing a cavity; 21 a return spring; 22 a movable plate; 23 a first expanding gas; a 24 annular cavity; 25 heat conducting rings; 26 an annular sealing piston; 27 telescopic rods; 28 pulling a rope; 29 a guide wheel; 30 a second expanding gas; 31 an exhaust port; 32 hanging rings; 33, hanging hooks; 34 a connecting piece; 35 an insulating plate; 36 a support member; 37 is communicated with a pipeline; 38 air inlet pipe; 39 a cavity; 40 piston plates; 41 a rope; 42 connecting plates; 43 spring.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-8, the invention provides a power distribution cabinet with overcurrent interruption and self-resetting, which includes a power distribution cabinet body 1, a gap is arranged on one side of the power distribution cabinet body 1, a self-checking lead terminal board 2 is welded and fixed at the gap, a protective cover 3 is hinged at the outer end of the power distribution cabinet body 1 and located outside the self-checking lead terminal board 2, a plurality of lead holes 4 are uniformly arranged on the protective cover 3 at intervals, a plurality of annular grooves 5 are arranged inside each lead hole 4, an annular air bag 6 is arranged inside each annular groove 5, the bottom ends of the annular air bags 6 inside each lead hole 4 are communicated through an air transmission pipeline 7, the bottom ends of the plurality of air transmission pipelines 7 are connected with a communicating pipeline 37, an air inlet pipe 38 is fixedly arranged at the bottom end of the communicating pipeline 37, and a cavity 39 is arranged inside the side wall of the protective cover 3, the one end of intake pipe 38 and the inside intercommunication of cavity 39, the inside of cavity 39 is provided with piston plate 40, piston plate 40's bottom is provided with spring 43, piston plate 40's bottom both sides all are provided with rope 41, the lateral wall of protection casing 3 is passed to rope 41's bottom to fixed the setting on connecting plate 42, connecting plate 42 is fixed to be set up on the 1 lateral wall of distribution cabinet, the even a plurality of louvre 9 that is provided with in upper end one side interval of distribution cabinet 1, the below that lies in louvre 9 on the distribution cabinet 1 lateral wall is provided with pressure release hole 10, the inside pressure release hole 10 inboard that lies in of distribution cabinet 1 is provided with shutoff board 11.
In a preferred embodiment, the self-test lead terminal 2 penetrates through a gap formed in the power distribution cabinet body 1, the self-test lead terminal 2 includes a housing 12, a plurality of access lead terminals 13 are uniformly arranged at an interval at one end of the housing 12, a first conductive metal rod 14 is fixedly arranged at one end of each of the access lead terminals 13, one end of the first conductive metal rod 14 penetrates through a side wall of the housing 12 and is arranged in a detection chamber 15 inside the housing 12, a conductive block 16 and a conductive piston 17 are fixedly arranged inside the detection chamber 15, one end of the first conductive metal rod 14 is fixedly connected with the conductive block 16, one side of the conductive piston 17 is fixedly provided with a second conductive metal rod 18, one end of the second conductive metal rod 18 penetrates through a side wall of the housing 12 and is arranged, a plurality of lead terminals 19 are uniformly arranged at an interval at one end of the housing 12 away from the access lead terminals 13, an installation cavity 20 is arranged inside the lead-out terminal 19, a return spring 21 is fixedly arranged inside the installation cavity 20, a movable plate 22 is fixedly arranged on one side of the return spring 21, one end of the second conductive metal rod 18 is fixedly arranged on the movable plate 22, one end of each detection cavity 15, which is positioned at the conductive piston 17, is filled with a first expansion gas 23, an annular cavity 24 is arranged outside each detection cavity 15, a heat conduction ring 25 is fixedly arranged on one side of each annular cavity 24, one side of each heat conduction ring 25 penetrates through the side wall of the annular cavity 24 and is communicated with the inside of the detection cavity 15, an annular sealing piston 26 is arranged inside each annular cavity 24, a telescopic rod 27 is fixedly arranged on one side of each annular sealing piston 26, one end of each telescopic rod 27 penetrates through the side wall of the shell 12, and a pull rope 28 is arranged at one end of each telescopic rod 27, which is positioned at the outside of the shell 12, one end of the pulling rope 28 is fixedly arranged on the plugging plate 11 through a guide wheel 29.
In a preferred embodiment, the side of the interior of the annular chamber 24 located at the annular sealing piston 26 is filled with a second inflation gas 30, one end of the annular cavity 24 is provided with an exhaust port 31, one side of the shell 12 close to the access lead terminal 13 is provided with protective airbags 8 at two ends of the access lead terminal 13, one end of the exhaust port 31 is arranged in the protective air bag 8, a plurality of hanging rings 32 are evenly arranged on the outer side of the protective air bag 8 at intervals, the inner side of the protective cover 3 is fixedly provided with a hook 33, the protective air bag 8 is hung on the inner side of the protective cover 33 through a hanging ring 32, the protective air bag 8 is convenient to mount and dismount, and the protection airbag 8 can form a closed space with the upper top surface and the lower top surface of the protection cover 3 after being swelled, the protective air bag 8 surrounds the short-circuited line, and the short-circuited line is prevented from influencing other lines.
In a preferred embodiment, the articulated outer end that sets up at the distribution cabinet body 1 in 3 upper ends of protection casing, the inboard embedding in bottom of protection casing 3 is provided with the absorption iron plate, be provided with on the distribution cabinet body 1 and adsorb iron plate assorted permanent magnet, all be provided with seal ring on the inside wall of protection casing 3, protection casing 3 is provided with the sealing washer with the articulated department of the distribution cabinet body 1, utilizes the adsorption of absorption iron plate and permanent magnet to fix protection casing 3 with the distribution cabinet body 1 is spacing fixed, can utilize the bolt to fix protection casing 3 with the distribution cabinet body 1 after adsorbing iron plate and permanent magnet in the installation, prevents to take place short circuit back protection gasbag 8 and push away protection casing 3.
In a preferred embodiment, the annular airbag 6 and the protective airbag 8 are made of flame-retardant and high-pressure-resistant rubber materials, the connecting pieces 34 are uniformly arranged on the outer side wall of the annular airbag 6 at intervals, the connecting pieces 34 are arranged inside the annular groove 5, the protective airbag 8 is arranged in a rectangular shape, the protective cover 3 is made of high-temperature-resistant and flame-retardant materials, the annular airbag 6 and the protective airbag 8 are made of TPU flame-retardant materials, the TPU materials have good elasticity and flame-retardant and high-pressure-resistant properties, can prevent the annular airbag 6 and the protective airbag 8 from being ignited due to short circuit, can bear high pressure and prevent explosion, the protective cover 3 is made of insulating mica materials, the outer side of the protective cover 3 is coated with heat-insulating materials, and the protective cover 3 is made of insulating mica, not only make protection casing 3 have better high temperature performance, have better insulating nature moreover, have better isolated effect to other circuits when protection gasbag 8 forms airtight space with protection casing 3.
In a preferred embodiment, the inboard of louvre 9 and pressure release hole 10 all is provided with the filter screen, be provided with seal ring on the one end lateral wall that shutoff board 11 is close to pressure release hole 10, the filter screen can reduce the dust in the air and enter into the inside of louvre 9, and seal ring can make shutoff board 11 and the inside switch board body 1 of pressure release hole 10 sealed effect better, prevents that the dust from entering into switch board body 1 inside through pressure release hole 10 in the usual use.
In a preferred embodiment, the housing 12 is made of a high-voltage-resistant insulating material, an insulating plate 35 is disposed inside the housing 12 between the two annular cavities 24, and the insulating plate 35 can block the two annular cavities 24 to prevent the temperature inside the other annular cavities 24 from being affected when the temperature of the short circuit of the line at one of the annular cavities 24 increases.
In a preferred embodiment, the first conductive metal rod 14 and the second conductive metal rod 18 are provided with a sealing ring at the contact position with the housing 12, the second conductive metal rod 18 is connected with the housing 12 in a sliding manner, and the first conductive metal rod 14 and the second conductive metal rod 18 are connected with the housing 12 in a sealing manner, so as to prevent the first expansion gas 23 from escaping from the housing 12.
In a preferred embodiment, the pull rope 28 is made of a high-temperature-resistant metal material, the guide wheels 29 are arranged on the side wall of the upper end of the shell 12 through the supporting members 36, a plurality of guide wheels 29 are evenly arranged at intervals, the pull rope 28 is made of the high-temperature-resistant metal material, the pull rope 28 can be prevented from being heated and melted, the service life of the pull rope 28 is prolonged, and the guide wheels 29 can change the direction of the pull rope 28, so that the pull rope 28 lifts up the bottom end of the plugging plate 11.
In a preferred embodiment, a sealing ring is disposed at a joint of the telescopic rod 27 and the housing 12, the telescopic rod 27 is slidably connected to the housing 12, a high temperature resistant sealing washer is disposed at a joint of the heat conducting ring 25 and the detection cavity 15, preferably, the heat conducting ring 25 is made of a metal heat conducting material, one end of the heat conducting ring 25 is disposed in the detection cavity 15, the other end of the heat conducting ring 25 is disposed in the annular cavity 24, the heat conducting ring 25 can absorb heat in the detection cavity 15 and transmit the heat to the annular cavity 24, and the high temperature resistant sealing washer can seal the joint of the heat conducting ring 25 and the detection cavity 15, so as to prevent the first expanding gas 23 and the second expanding gas 30 from flowing through each other.
The working principle of the invention is as follows: when the protective cover is installed, a lead wire required by the power distribution cabinet body 1 passes through the lead wire hole 4 on the protective cover 3 and is connected with the access lead terminal 13 at the outer end of the self-test lead terminal 2 after passing through the lead wire hole 4, the protective air bag 8 at the outer end of the shell 12 is hung on the hook 33 at the inner side of the protective cover 3 through the hanging ring 32 after the connection is finished, the protective cover 3 covers the outer side of the self-test lead terminal 2, when the protective cover 3 rotates, the bottom end of the protective cover 3 is gradually close to the connecting plate 42, the force of the rope 41 pulling the piston plate 40 is reduced, the piston plate 40 in the cavity 39 in the protective cover 3 is close to the direction of the lead wire hole 4 under the action of the spring 43, when the piston plate 40 moves, the interior in the cavity 39 can be led into the communicating pipeline 37 through the air inlet pipe 38 and then enters the air conveying pipeline 7 and the annular air bag 6 through the communicating pipeline 37, so that the annular air bag 6 is bulged out from the annular groove 5, the annular air bag 6 can coat the lead wire, so that the sealing of the lead wire hole 4 is realized, the outer side of the annular air bag 6 is fixed in the annular groove 5, the inner side of the annular air bag 6 bulges out of the annular groove 5, the sealing effect is high, when the protective cover 3 is lifted up, the rope 41 can pull the piston plate 40 to move towards the direction far away from the lead wire hole 4, so that the gas in the annular air bag 6 is sucked into the cavity 39 by negative pressure, the lead wire is conveniently led out from the lead wire hole 4, then the protective cover 3 is adsorbed on the power distribution cabinet body 1 by utilizing the adsorption iron block on the protective cover 3 and the permanent magnet on the power distribution cabinet body 1, then the protective cover 3 is fixed by utilizing the fixing bolt, the internal components of the power distribution cabinet body 1 are connected with the lead-out lead terminal 19 on the self-detection lead terminal 2 through the lead wire, and the installation of the lead wire of the power distribution cabinet body 1 is realized;
in the using process, current is transmitted to the conductive piston 17 through the access lead terminal 13, the first conductive metal rod 14 and the conductive block 16, and then is transmitted to the electronic component in the distribution cabinet body 1 through the second conductive metal rod 18 and the lead terminal 19, if a short circuit occurs in a certain line in the using process, the temperature of the short circuit current is increased and passes through the detection cavity 15, the first expansion gas 23 in the detection cavity 15 can be heated, the first expansion gas 23 can push the conductive piston 17 to be far away from the conductive block 16 after expanding when heated, after the conductive block 16 is separated from the conductive piston 17, the current is cut off at the detection cavity 15, so as to realize the protection of the internal line of the distribution cabinet body 1, after the temperature of the first expansion gas 23 is increased, the heat conducting ring 25 can absorb the temperature in the first expansion gas 23, and transmit the absorbed heat to the annular cavity 24, and heat the second expansion gas 30 in the annular cavity 24, the second expanding gas 30 can enter the protective airbag 8 through the exhaust port 31 after expanding when heated, so that the protective airbag 8 expands and swells, the upper end and the lower end of the expanded protective airbag 8 are respectively attached to the inner side walls of the upper end and the lower end of the protective cover 3, the short-circuited line is surrounded by the protective airbag 8, the operation of other lines is prevented from being influenced by the short-circuited line, when the protective airbag 8 swells to a certain degree, the second expanding gas 30 which continues to expand can push the annular sealing piston 26 in the annular cavity 24 to move, so that the annular sealing piston 26 drives the telescopic rod 27 to move towards the outer end of the shell 12, when the telescopic rod 27 moves towards the outer side, the plugging plate 11 can be pulled towards the inner side of the power distribution cabinet body 1 through the pull rope 28, the bottom end of the plugging plate 11 is lifted, so that the plugging plate 11 is far away from the inner side wall of the power distribution cabinet body 1, so that the pressure relief hole 10 is exposed, and the temperature and the air pressure in the power distribution cabinet body 1 can be discharged through the pressure relief hole 10, the heat dissipation performance and the explosion-proof performance of the power distribution cabinet body 1 can be effectively improved, when a short-circuit in the power distribution cabinet body 1 is broken for a period of time, the temperature in the detection cavity 15 and the annular cavity 24 is reduced, the first expansion gas 23 and the second expansion gas 30 contract, the conductive piston 17 approaches to the conductive block 16 under the action of the reset spring 21, when the temperature in the detection cavity 15 is reduced to a certain degree, the conductive piston 17 contacts with the conductive block 16, so that the short-circuit is continuously electrified, and when the temperature in the annular cavity 24 is lower, the second expansion gas 30 contracts, the gas in the protective airbag 8 is squeezed into the annular cavity 24 under the contraction action of the protective airbag 8, the annular sealing piston 26 drives the telescopic rod 27 to move towards the inner side of the annular cavity 24 under the negative pressure action in the annular cavity 24 and the squeezing action of the blocking plate 11, so that the blocking plate 11 approaches to the inner side wall of the power distribution cabinet body 1, thereby make shutoff board 11 block up pressure release hole 10, prevent that the dust from passing through pressure release hole 10 and entering into the inside of switch board body 1 when ordinary use.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a power distribution cabinet that overcurrent outage just from restoring to throne, includes the power distribution cabinet body (1), its characterized in that: one side of the power distribution cabinet body (1) is provided with a notch, the notch is fixedly welded with a self-checking lead terminal (2), the outer end of the power distribution cabinet body (1) is hinged with a protective cover (3) on the outer side of the self-checking lead terminal (2), a plurality of lead holes (4) are uniformly arranged on the protective cover (3) at intervals, a plurality of annular grooves (5) are arranged in each lead hole (4), each annular air bag (6) is arranged in each annular groove (5), the bottoms of the annular air bags (6) in each lead hole (4) are communicated through an air transmission pipeline (7), the bottoms of the air transmission pipelines (7) are connected with a communicating pipeline (37), the bottom end of the communicating pipeline (37) is fixedly provided with an air inlet pipe (38), and a cavity (39) is arranged in the side wall of the protective cover (3), a piston plate (40) is arranged inside the cavity (39), a spring (43) is arranged at the bottom end of the piston plate (40), ropes (41) are arranged on two sides of the bottom end of the piston plate (40), the bottom end of each rope (41) penetrates through the side wall of the protective cover (3) and is fixedly arranged on a connecting plate (42), the connecting plate (42) is fixedly arranged on the outer side wall of the distribution cabinet body (1), a plurality of radiating holes (9) are uniformly arranged at intervals on one side of the upper end of the distribution cabinet body (1), a pressure relief hole (10) is formed in the side wall of the distribution cabinet body (1) and is positioned below the radiating hole (9), and a blocking plate (11) is arranged inside the distribution cabinet body (1) and is positioned on the inner side of the pressure relief hole (10);
the self-checking lead terminal (2) runs through the notch arranged on the power distribution cabinet body (1), the self-checking lead terminal (2) comprises a shell (12), one end of the shell (12) is uniformly provided with a plurality of access lead terminals (13) at intervals, one end of each access lead terminal (13) is fixedly provided with a first conductive metal rod (14), one end of each first conductive metal rod (14) penetrates through the side wall of the shell (12) and is arranged in a detection cavity (15) inside the shell (12), a conductive block (16) and a conductive piston (17) are fixedly arranged inside the detection cavity (15), one end of each first conductive metal rod (14) is fixedly connected with the conductive block (16), one side of the conductive piston (17) is fixedly provided with a second conductive metal rod (18), one end of each second conductive metal rod (18) penetrates through the side wall of the shell (12), a plurality of lead-out lead terminals (19) are uniformly arranged at intervals at one end, far away from the lead-in terminal (13), of the shell (12), a mounting cavity (20) is arranged inside the lead-out lead terminals (19), a reset spring (21) is fixedly arranged inside the mounting cavity (20), a movable plate (22) is fixedly arranged on one side of the reset spring (21), one end of a second conductive metal rod (18) is fixedly arranged on the movable plate (22), one end, located on a conductive piston (17), inside each detection cavity (15) is filled with first expansion gas (23), an annular cavity (24) is arranged on the outer side of each detection cavity (15), a heat-conducting ring (25) is fixedly arranged on one side of each annular cavity (24), and one side of each heat-conducting ring (25) penetrates through the side wall of the annular cavity (24) and is communicated with the inside of the detection cavity (15), an annular sealing piston (26) is arranged in the annular cavity (24), a telescopic rod (27) is fixedly arranged on one side of the annular sealing piston (26), one end of the telescopic rod (27) penetrates through the side wall of the shell (12) to be arranged, a pull rope (28) is arranged at one end, located on the outer side of the shell (12), of the telescopic rod (27), and one end of the pull rope (28) penetrates through a guide wheel (29) to be fixedly arranged on the blocking plate (11);
a second expansion gas (30) is filled in one side, located on the annular sealing piston (26), of the annular cavity (24), an exhaust port (31) is formed in one end of the annular cavity (24), protective airbags (8) are arranged at two ends, located on the lead-in terminal (13), of one side, close to the lead-in terminal (13), of the shell (12), one end of the exhaust port (31) is arranged inside the protective airbags (8), a plurality of hanging rings (32) are uniformly arranged on the outer side of the protective airbags (8) at intervals, and hooks (33) are fixedly arranged on the inner side of the protective cover (3);
the upper end of the protective cover (3) is hinged to the outer end of the power distribution cabinet body (1), an adsorption iron block is embedded into the inner side of the bottom end of the protective cover (3), a permanent magnet matched with the adsorption iron block is arranged on the power distribution cabinet body (1), sealing washers are arranged on the inner side walls of the protective cover (3), and the sealing washers are arranged at the hinged positions of the protective cover (3) and the power distribution cabinet body (1);
annular gasbag (6) and protective airbag (8) all adopt fire-retardant, high pressure resistant rubber material to make and form, the even connecting piece (34) that is provided with in interval on annular gasbag (6) lateral wall, connecting piece (34) set up the inside at ring channel (5), protective airbag (8) are the rectangle setting, protection casing (3) adopt high temperature resistant fire-retardant material to make and form.
2. The power distribution cabinet capable of being powered off by overcurrent and automatically reset according to claim 1, wherein: the inner sides of the heat dissipation holes (9) and the pressure relief holes (10) are provided with filter screens, and one end side wall, close to the pressure relief holes (10), of the plugging plate (11) is provided with a sealing gasket.
3. The power distribution cabinet capable of being powered off by overcurrent and automatically reset according to claim 2, wherein: the shell (12) is made of high-voltage-resistant insulating materials, and heat insulation plates (35) are arranged between the two annular cavities (24) inside the shell (12).
4. The power distribution cabinet capable of being powered off by overcurrent and automatically reset according to claim 3, wherein: the contact positions of the first conductive metal rod (14) and the second conductive metal rod (18) with the shell (12) are both provided with sealing rings, and the second conductive metal rod (18) is in sliding connection with the shell (12).
5. The power distribution cabinet capable of being powered off by overcurrent and automatically reset according to claim 4, wherein: the pull rope (28) is made of high-temperature-resistant metal materials, the guide wheels (29) are arranged on the side wall of the upper end of the shell (12) through supporting pieces (36), and a plurality of guide wheels (29) are uniformly arranged at intervals.
6. The power distribution cabinet capable of being powered off under overcurrent and automatically resetting according to claim 5, wherein the power distribution cabinet is characterized in that: the joint of telescopic link (27) and casing (12) is provided with the sealing washer, telescopic link (27) and casing (12) sliding connection, the junction of heat conduction ring (25) and detection chamber (15) is provided with high temperature resistant seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011264092.6A CN112467533B (en) | 2020-11-12 | 2020-11-12 | Power distribution cabinet capable of overcurrent power-off and resetting automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011264092.6A CN112467533B (en) | 2020-11-12 | 2020-11-12 | Power distribution cabinet capable of overcurrent power-off and resetting automatically |
Publications (2)
| Publication Number | Publication Date |
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| CN112467533A CN112467533A (en) | 2021-03-09 |
| CN112467533B true CN112467533B (en) | 2022-09-06 |
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| CN202011264092.6A Active CN112467533B (en) | 2020-11-12 | 2020-11-12 | Power distribution cabinet capable of overcurrent power-off and resetting automatically |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113411999B (en) * | 2021-06-28 | 2022-09-27 | 王隽峰 | Information-based equipment based on Internet of things |
| CN113950218A (en) * | 2021-09-22 | 2022-01-18 | 朱志辰 | Die-casting aluminum box |
| CN114899651B (en) * | 2022-06-07 | 2023-08-22 | 中船永志泰兴电子科技有限公司 | Marine sealed electric connector with waterproof compressive structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209344536U (en) * | 2018-10-11 | 2019-09-03 | 南京苏尔机电科技有限公司 | A kind of safety type power cabinet |
| CN110707572A (en) * | 2019-12-04 | 2020-01-17 | 邱东升 | Power distribution cabinet heat dissipation device based on centrifugal principle |
| CN111786283A (en) * | 2020-08-06 | 2020-10-16 | 武汉金鑫华机械加工厂 | Power cabinet for power distribution network transformer substation |
| CN111864607A (en) * | 2019-08-29 | 2020-10-30 | 绍兴迪艾仕机械设计有限公司 | Dampproof device suitable for block terminal in plum rain season |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1296011B (en) * | 1966-07-02 | 1969-05-22 | Danfoss As Fa | Servomotor |
| CN204178930U (en) * | 2014-09-23 | 2015-02-25 | 广东明路电力电子有限公司 | Power-off explosion-proof type capacitor |
| CN207409861U (en) * | 2017-09-03 | 2018-05-25 | 青岛丰泰配电工程有限公司 | A kind of construction site distribution box of good heat dissipation effect |
| KR102138814B1 (en) * | 2017-11-14 | 2020-07-28 | 오영태 | Power Distributing Board having Nonpowered Cooling Structure |
| CN110212418B (en) * | 2019-05-15 | 2020-10-23 | 阮豪杰 | Low pressure stabiliser fire prevention installation cabinet |
| CN210350707U (en) * | 2019-08-26 | 2020-04-17 | 江苏瀚网智能科技有限公司 | Security protection intelligent network wiring case |
| CN210224658U (en) * | 2019-08-28 | 2020-03-31 | 南安市三落工业设计有限公司 | Switch board convenient to seal protection to cable |
| CN210608427U (en) * | 2019-10-24 | 2020-05-22 | 宜昌赤那思电气有限公司 | Automatically controlled cabinet of dust protected crosses line protector |
| CN211655348U (en) * | 2019-12-30 | 2020-10-09 | 上海成凡云计算科技有限公司 | Business turn over line hole with adjustable switch board aperture |
| CN211556518U (en) * | 2020-04-06 | 2020-09-22 | 浙江安港电力有限公司 | Novel power distribution cabinet |
| CN111313266B (en) * | 2020-04-10 | 2021-06-11 | 初行电力科技(江苏)有限公司 | Switch board that safety protection effect is good |
-
2020
- 2020-11-12 CN CN202011264092.6A patent/CN112467533B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209344536U (en) * | 2018-10-11 | 2019-09-03 | 南京苏尔机电科技有限公司 | A kind of safety type power cabinet |
| CN111864607A (en) * | 2019-08-29 | 2020-10-30 | 绍兴迪艾仕机械设计有限公司 | Dampproof device suitable for block terminal in plum rain season |
| CN110707572A (en) * | 2019-12-04 | 2020-01-17 | 邱东升 | Power distribution cabinet heat dissipation device based on centrifugal principle |
| CN111786283A (en) * | 2020-08-06 | 2020-10-16 | 武汉金鑫华机械加工厂 | Power cabinet for power distribution network transformer substation |
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| CN112467533A (en) | 2021-03-09 |
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Effective date of registration: 20220817 Address after: Room 301, Area B, Southwest corner of the intersection of Nandian Road and Pearl South Road, Yongzhou Economic and Technological Development Zone, Yongzhou City, Hunan Province 425000 Applicant after: Hunan Chenhao Electric Power Technology Co., Ltd. Address before: 225000 No.458 Jiangdu Road, Guangling District, Yangzhou City, Jiangsu Province Applicant before: Tang Jianwen |
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