CN117175770B - Alternating current power supply switching power supply protection assembly - Google Patents
Alternating current power supply switching power supply protection assembly Download PDFInfo
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- CN117175770B CN117175770B CN202310968503.7A CN202310968503A CN117175770B CN 117175770 B CN117175770 B CN 117175770B CN 202310968503 A CN202310968503 A CN 202310968503A CN 117175770 B CN117175770 B CN 117175770B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an alternating current power supply switching power supply protection assembly, which is characterized in that a main power supply switching assembly and a standby power supply switching assembly are identical in structure and symmetrically arranged at the left side and the right side of an alternating current output detector, a switching knife assembly which is rotationally connected inside a base assembly is arranged below the alternating current output detector, a counterweight assembly is arranged at the top of the switching knife assembly, and the alternating current relay can be prevented from frequently switching power along with unstable voltage, so that frequent shaking of a movable knife of the alternating current relay is avoided, contact burnout of the movable knife on the alternating current relay is avoided, and an arc extinguishing effect on an arc is achieved through the cooperation of an air-blowing arc extinguishing assembly and a magnetic-blowing arc extinguishing assembly.
Description
Technical Field
The invention relates to the technical field of power supply protection components, in particular to an alternating current power supply switching power supply protection component.
Background
The power supply switching assembly is generally arranged in the ring main unit of the power distribution network, the switching between the main power supply and the standby power supply is realized due to the fact that one power supply is abnormal, the safety and the reliability of power supply are guaranteed in time, the common power supply is required to be switched to the standby power supply through the switching power supply assembly, and the core component in the switching power supply assembly is also a 220VAC alternating current relay.
In an ac power supply switching power supply device for communication with the application number 202122162427.X, the current sensor monitors that the current is present in the electric wire, so that it is judged that the switching power supply device is converted from a normal power supply to a standby power supply, and meanwhile, the buzzer sounds to remind a maintainer, so that the maintainer can timely know that the circuit fails, and active and passive power supply switching can be realized.
However, in the actual use process, there are many drawbacks in the action processing of the ac relay on the unstable voltage, because the primary voltage in the power grid is not a stable value, the secondary voltage becomes rated 220VAC through the power-taking voltage transformer to supply power to the equipment in the ring main unit, the 220VAC also can change in a certain range, the coil bearing voltage value of the ac relay is 0.8 times UR (ur=220 VAC) and is a reliable action voltage threshold, when the input voltage of the ac relay is just near 0.8 times UR, the ac relay is just clamped near the action threshold value of the ac relay, because the voltage has the instability, the ac relay can jump about 0.8 times UR, at this moment, frequent action or reset can be performed under the condition of carrying load, namely the ac relay can make frequent switching operation along with the instability of the voltage, can lead to frequent shaking of the moving blades on the ac relay, in addition, because the moving blades of the ac relay are electrified working components, the switching point of the moving blades is a normally closed circuit, the switching point is carried out under the condition of the switching point, the moving contacts is more difficult to realize, the problem that the switching point is easy to realize, the switching point is more difficult, the problem is that the switching point is more easily occurs, the moving point is more easily, the arc contacts is switched over or is more easily, the arc contacts is more easily, the problem is more has is more easily, and is more difficult to be switched, and has the problem is more has the problem that the switching point is easily, and is easy to be switched over when the arc contacts is switched.
Disclosure of Invention
The invention aims to provide an alternating current power supply switching power supply protection assembly for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an alternating current power supply switches power supply protection subassembly, includes the basic subassembly, and fixed mounting has the alternating current output detector in the basic subassembly, the alternating current output detector left side is equipped with main power supply switching element, the alternating current output detector right side is equipped with stand-by power supply switching element, just main power supply switching element and stand-by power supply switching element structure are constituteed the same and symmetry sets up in alternating current output detector left and right sides, the below of alternating current output detector is provided with the switching knife assembly of rotating connection in the inside of basic subassembly, switching knife assembly top is equipped with the counter weight subassembly.
The main power supply switching assembly comprises a driving assembly connected with the switching knife assembly, an air blowing arc extinguishing assembly is arranged on the driving assembly, a power supply electrifying contact for switching on a main power supply and a standby power supply is arranged in the base assembly, and a magnetic arc extinguishing assembly is arranged on the power supply electrifying contact.
The gas-blowing arc extinguishing assembly is characterized in that the gas-blowing arc extinguishing assembly is provided with a drainage assembly, the drainage assembly comprises a protective insulating cover, a permanent magnet is fixed in the protective insulating cover, and an arc extinguishing grid plate is arranged on the outer side of the bottom of the protective insulating cover in an integrated manner.
The magnetic quenching assembly comprises a slide rail arranged at the bottom of a power supply energizing contact, a slide seat is slidably arranged in the slide rail, a supporting spring is fixedly connected to the side wall of the slide seat, the other end of the supporting spring is fixed to the inner side wall of the slide rail, a guide rod is fixed to the other side wall of the slide seat, the other end of the guide rod extends out of the power supply energizing contact and is fixedly connected with a partition insulating plate, and a bending device capable of bending and shaping the partition insulating plate is fixed to the bottom of the power supply energizing contact.
Preferably, the foundation assembly comprises a fixing plate, a protective shell is fixedly assembled on the front side wall of the fixing plate, the left side and the right side of the protective shell are divided into a main power supply connection area and a standby power supply connection area, a main power supply wiring terminal connected with a power supply energizing contact is arranged on the main power supply connection area, a standby power supply wiring terminal connected with the power supply energizing contact is arranged on the standby power supply connection area, and a working indicator lamp corresponding to the two groups of power supply energizing contacts is arranged on the protective shell.
Preferably, the ac output detector is provided with a first voltage comparing circuit, a second voltage comparing circuit, a latch circuit and a switch circuit, wherein the first voltage comparing circuit and the second voltage comparing circuit are electrically connected with the latch circuit, the latch circuit is electrically connected with the switch circuit, the switch circuit is electrically connected with the main power supply switching component and the standby power supply switching component, and the latch circuit is used for controlling the switch circuit to act and disconnect a corresponding power supply energizing contact to form a power supply switching action when the first voltage comparing circuit generates an overvoltage comparing result according to the received first sampling voltage and the first reference voltage or generates a comparing result according to the received second sampling voltage and the preset second reference voltage.
Preferably, the drive assembly includes the protecting crust of fixing on the outer lateral wall of the AC output detector, just protecting crust internal fixation has the yoke cup that is cylindric setting, yoke cup internal fixation is equipped with the coil, the interior slip fit of yoke cup has the armature, the top of armature is fixed with the bracing piece, just the outside cover of bracing piece is established and is equipped with the reset spring who fixes at the armature top, reset spring's the other end is fixed at protecting crust inner chamber top, the bottom fixedly connected with first haulage rope of armature.
Preferably, the air-blowing arc extinguishing assembly comprises a folding rod, the top end of the supporting rod extends out of the top of the driving assembly to be fixedly connected with the folding rod, and the drainage assembly is fixed at the bottom end of the folding rod.
Preferably, the switch knife assembly comprises a rotary table which is rotationally connected in the protective shell through a rotary shaft, a limiting plate is arranged on the left side and the right side of the rotary table in a symmetrical integrated manner, a movable knife which is 120 degrees with the included angle of the limiting plate is arranged on the other end of the limiting plate in an integrated manner, the bottom end of the movable knife is fixedly connected with the other end of the second traction rope, the included angle between the limiting plates is 150 degrees, the bottom end of the first traction rope extends out of the bottom of the driving assembly and is fixed at the top of the outer end of the limiting plate, and a jet head is fixed on the outer side wall of the limiting plate.
Preferably, the power-on contact comprises an insulating seat fixed in the protective shell, a fixed contact is fixedly arranged on the insulating seat, and the drainage component and the fixed contact are oppositely arranged.
Preferably, the counterweight assembly comprises a main counterweight hollow ball and an auxiliary counterweight hollow ball which are slidably assembled at the top of the limiting plate, the main counterweight hollow ball and the auxiliary counterweight hollow ball are connected through a steel wire rope, a support sleeved on the steel wire rope is fixed at the top of the turntable, and a limiting ring is fixed on the steel wire rope.
Preferably, the jet head and the drainage component are arranged oppositely, the jet head is connected with an external air pump through a conduit, and the external air pump is electrically connected with the alternating current output detector.
Preferably, the outer end of the guide rod is fixed with a clamp holder, the partition insulating plate is fixed in the clamp holder through a fastening bolt, the bending device comprises a supporting rod fixed at the bottom end of the fixed contact, the bottom end of the supporting rod is fixedly connected with an arc sleeve with the same radian as the fixed contact, the arc sleeve is provided with a flattening sleeve which is arranged on one side wall of the arc sleeve, close to the clamp holder, in an integrated manner, and the flattening sleeve and the partition insulating plate are oppositely arranged.
The invention has the technical effects and advantages that:
1. the alternating current output detector can monitor the voltage signals on the main power supply and the standby power supply at any time, so that the voltage average value in a certain time period can be calculated, the stable amplitude of the output voltage of the power supply can be obtained, comparison and logic judgment can be carried out when the jump amplitude of the determined voltage is large, the non-action control signals for the main power supply switching component and the standby power supply switching component are output, the alternating current relay can be prevented from carrying out frequent switching operation along with unstable voltage, the frequent shaking of a movable knife of the alternating current relay can not be caused, and the contact burnout of the movable knife on the alternating current relay can not be caused.
2. When the driving assembly provided by the invention is used for realizing power supply switching, the upward drainage of the electric arc is realized through the magnetic attraction matching of the isolating insulating plate and the permanent magnet, meanwhile, the magnetic blowing effect on the small electric arc can be realized through the magnetic attraction matching of the isolating insulating plate and the permanent magnet, the arc extinguishing effect is realized, and meanwhile, the isolating insulating plate can be wrapped on the outer side of the fixed contact, so that the wrapping protection effect on the fixed contact can be realized.
3. The counterweight component provided by the invention gives the rotating moment of the non-working movable switch blade around the rotating shaft under the action of the gravity of the main counterweight hollow ball or the auxiliary counterweight hollow ball, the rotating moment can increase the bonding degree of the working movable switch blade to the fixed contact, and the connection tightness is improved, so that the movable switch blade is prevented from separating from the fixed contact, and the problem of poor bonding degree of the movable switch blade to the fixed contact is solved.
4. The counterweight component provides a trigger signal for the air blowing action, not only finishes the drainage of the electric arc through the magnetic attraction flow action between the isolating plate and the permanent magnet, but also realizes the magnetic blowing and extinguishing of the electric arc by utilizing the magnetic attraction, and simultaneously blows the electric arc between the isolating plate and the permanent magnet by utilizing the jet head, so that the electric arc can be blown onto the arc extinguishing grid plate, and the electric arc can be decomposed by the area on the arc extinguishing grid plate, thereby realizing the air blowing and extinguishing, and achieving the arc extinguishing isolating action on the larger electric arc through the cooperation of the air blowing and extinguishing component and the magnetic blowing and extinguishing component.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic overall sectional structure of the present invention.
Fig. 3 is a schematic view of a partial structure of the present invention.
Fig. 4 is a schematic view of a partial assembly structure of the present invention.
Fig. 5 is a schematic diagram of a driving assembly structure of the present invention.
Fig. 6 is a schematic structural diagram of a switch blade assembly according to the present invention.
Fig. 7 is a schematic diagram of an assembly structure of a power-on contact and a magnetic quenching assembly of the present invention.
Fig. 8 is a schematic diagram of the assembly structure of the air-blowing arc extinguishing assembly and the magnetic arc extinguishing assembly of the present invention.
Fig. 9 is an enlarged schematic view of the portion a of the present invention.
Fig. 10 is a schematic view of a counterweight assembly according to the invention.
In the figure: a base component; 11. a fixing plate; 12. a protective shell; 13. a work indicator light; 14. a main power terminal; 15. a standby power terminal; 2. an ac output detector; 3. a main power switching assembly; 4. a standby power switching assembly; 5. a drive assembly; 51. a yoke cup; 52. a coil; 53. an armature; 54. a return spring; 55. a support rod; 56. a first traction rope; 6. a switch blade assembly; 61. a rotating shaft; 62. a turntable; 63. a limiting plate; 64. a moving knife; 65. a jet head; 7. an air blowing arc extinguishing assembly; 71. a folding rod; 72. a drainage assembly; 721. a permanent magnet; 722. a protective insulating cover; 723. arc extinction grating sheet; 8. a power supply power-on contact; 81. an insulating base; 82. a stationary contact; 9. a magnetic blow-out arc extinguishing assembly; 91. a slide; 92. a support spring; 93. a guide rod; 94. isolating an insulating plate; 95. a bending device; 96. a second traction rope; 10. a counterweight assembly; 101. a main weighted hollow sphere; 102. auxiliary weight hollow ball; 103. a wire rope; 104. and a limiting ring.
Description of the embodiments
The technical solutions of 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, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.
Examples
The invention provides an alternating current power supply switching power supply protection assembly as shown in fig. 1-10, which comprises a base assembly, wherein the base assembly comprises a fixed plate 11, a protective shell 12 is fixedly assembled on the front side wall of the fixed plate 11, the left side and the right side of the protective shell 12 are divided into a main power supply connection area and a standby power supply connection area, a main power supply terminal 14 connected with a power supply energizing contact 8 is arranged on the main power supply connection area, a standby power supply terminal 15 connected with the power supply energizing contact 8 is arranged on the standby power supply connection area, a work indicator lamp 13 corresponding to the two groups of power supply energizing contacts 8 is arranged on the protective shell 12, wires can be installed in the main power supply terminal 14 and the standby power supply terminal 15, the work indicator lamp 13 is connected with a switch blade assembly 6, and the work states of the main power supply connection area and the standby power supply connection area can be monitored in real time.
Referring to fig. 2-3, an ac output detector 2 is fixedly installed in a base component, a main power supply switching component 3 is installed on the left side of the ac output detector 2, a standby power supply switching component 4 is installed on the right side of the ac output detector 2, the main power supply switching component 3 and the standby power supply switching component 4 are identical in structure and symmetrically arranged on the left side and the right side of the ac output detector 2, a switch blade component 6 rotatably connected inside the base component is arranged below the ac output detector 2, the main power supply switching component 3 comprises a driving component 5 connected with the switch blade component 6, and a power supply energizing contact 8 for switching on the main power supply and the standby power supply is installed in the base component.
In this way, when in actual use, the ac output detector 2 can monitor the voltage signals on the main power supply and the standby power supply at any time, so that the voltage average value in a certain period of time can be calculated, the stable amplitude of the power supply output voltage can be obtained, when the jump amplitude of the determined voltage is larger, comparison and logic judgment are carried out, the inactive control signals of the main power supply switching component 3 and the standby power supply switching component 4 are output, namely, when the main power supply switching component 3 is connected to a circuit, the output voltage on the main power supply switching component 3 is repeatedly jumped at the critical value of 0.8UR at this time, and when the jump amplitude exceeds a preset value, the ac output detector 2 controls the standby power supply switching component 4 to not act, otherwise, the ac relay can be prevented from making frequent switching operation along with the unsmooth voltage, so that the moving knife 64 of the ac relay is not frequently shaken, and the contact of the moving knife 64 on the ac relay is not burnt.
The ac output detector 2 is internally provided with a first voltage comparing circuit, a second voltage comparing circuit, a latch circuit and a switch circuit, wherein the first voltage comparing circuit and the second voltage comparing circuit are electrically connected with the latch circuit, the latch circuit is electrically connected with the switch circuit, the switch circuit is electrically connected with the main power supply switching component 3 and the standby power supply switching component 4, the latch circuit is used for sending an action control signal to another switching component at this time to complete the safe switching operation of the power supply only when the latch circuit detects that the output voltage is stable within a stable range according to the received overvoltage comparing result generated by the first sampling voltage and the first reference voltage or the comparison result generated by the second sampling voltage comparing circuit and the preset second reference voltage is a preset level signal, and the action of the switch circuit is controlled to control the main power supply switching component 3 and the standby power supply switching component 4 to act or reset, so as to drive the switch knife switch component 6 to act or reset, and the corresponding power supply switching contact 8 is disconnected to form the power supply switching action.
Referring to fig. 5, the driving assembly 5 includes a protective housing fixed on an outer sidewall of the ac output detector 2, a yoke cup 51 having a cylindrical shape is fixed in the protective housing, a coil 52 is fixedly mounted in the yoke cup 51, an armature 53 is slidably mounted in the yoke cup 51, a supporting rod 55 is fixed on a top of the armature 53, a return spring 54 fixed on the top of the armature 53 is sleeved on an outer side of the supporting rod 55, the other end of the return spring 54 is fixed on a top of an inner cavity of the protective housing, and a first traction rope 56 is fixedly connected to a bottom of the armature 53.
When the alternating current output detector 2 outputs a control signal, the driving component 5 on the corresponding main power supply switching component 3 and the standby power supply switching component 4 can act, namely the coil 52 can generate adsorption force on the armature 53, so that the armature 53 is driven to move upwards against the compression resilience force of the return spring 54, the first traction rope 56 is driven to move upwards, the support rod 55 is driven to move upwards synchronously, the return spring 54 pushes the armature 53 to move downwards to reset after the coil 52 is powered off, the action speed of the driving component 5 is accelerated under the action of gravity of the armature 53, and the support rod 55 can be driven to reset and the first traction rope 56 is released.
Referring to fig. 4-6, the switch blade assembly 6 includes a rotary disc 62 rotatably connected in the protective shell 12 through a rotary shaft 61, a limiting plate 63 is symmetrically and integrally formed on the left and right sides of the rotary disc 62, a movable blade 64 with an included angle of 120 degrees with the limiting plate 63 is integrally formed on the other end of the limiting plate 63, the bottom end of the movable blade 64 is fixedly connected with the other end of the second traction rope 96, the included angle between the two groups of limiting plates 63 is 150 degrees, the bottom end of the first traction rope 56 extends out of the bottom of the driving assembly 5 and is fixed on the top of the outer end of the limiting plate 63, and a jet head 65 is fixed on the outer side wall of the limiting plate 63, so that when any group of movable blades 64 acts, the other group of movable blades 64 are driven to be separated from contact with the power-on contact 8, and the working independence of the two groups of movable blades 64 is ensured. .
Referring to fig. 3-9, the driving assembly 5 is provided with the air-blowing arc extinguishing assembly 7, the air-blowing arc extinguishing assembly 7 comprises a folding rod 71, the top end of the supporting rod 55 extends out of the top of the driving assembly 5 and is fixedly connected with the folding rod 71, the drainage assembly 72 is fixed at the bottom end of the folding rod 71, when in actual use, the driving assembly 5 is powered up to drive the supporting rod 55 to move upwards, then the drainage assembly 72 at the bottom end of the folding rod 71 is driven to move upwards, and meanwhile, the magnetic arc extinguishing assembly 9 can be driven to reset, the magnetic arc extinguishing assembly 9 is driven to be separated from the fixed contact 82, the movable knife switch 64 of the group is convenient to contact with the power-on electrical contact 8, and accordingly power switching action is realized.
Referring to fig. 3-9, the magnetic quenching assembly 9 is assembled on the power-on contact 8, the power-on contact 8 includes an insulation seat 81 fixed inside the protective shell 12, a fixed contact 82 is fixedly installed on the insulation seat 81, and the fixed contact 82 and the movable knife 64 are assembled in a fitting manner, the magnetic quenching assembly 9 includes a slide rail provided at the bottom of the power-on contact 8, a slide seat 91 is slidably assembled in the slide rail, a supporting spring 92 is fixedly connected on a side wall of the slide seat 91, the other end of the supporting spring 92 is fixed on an inner side wall of the slide rail, a guide rod 93 is fixed on the other side wall of the slide seat 91, a partition insulating plate 94 is fixedly connected with the other end of the guide rod 93, and a bending device 95 capable of bending and shaping the partition insulating plate 94 is fixed at the bottom of the power-on contact 8.
In actual use, when the standby power supply is switched to the main power supply, the left driving component 5 is driven to drive the air-blast arc extinguishing component 7 to move upwards along with the action of the main power supply switching component 3, meanwhile, the limiting plate 63 can be pulled to rotate around the rotating shaft 61 through the first traction rope 56, and when the limiting plate 63 is attached to the driving component 5, the movable knife 64 on the side is contacted with the fixed contact 82 on the side, so that the power supply switching is completed.
At this time, the driving component 5 in the standby power switching component 4 is turned from the working state to the non-working state, at this time, the standby power needs to be disconnected, that is, the left driving component 5 is electrified, so that the supporting rod 55 in the main power switching component 3 can be driven to move upwards, and then the drainage component 72 at the bottom end of the folding rod 71 is driven to move upwards, so that the moving blades 64 of the group are convenient to contact with the power-on contact 8, thereby realizing the power switching action, at the same time, the right moving blades 64 can be driven to synchronously rotate along with the rotation of the left moving blades 64, and the right driving component 5 is in the power-off state, that is, the right moving blades 64 is not pulled upwards, so that the switching action is realized by rotating the moving blade component 6 relative to the rotating shaft 61, and when the right driving component 5 is turned from the working state to the non-working state, the supporting force of the folding rod 71 is lost after the right driving component 5 is powered off, and at this time, the air blowing component 7 can move downwards to reset along with the power-off of the right driving component 5.
In this process, along with the separation of right movable knife 64 and right fixed contact 82, drainage subassembly 72 moves down in the synchronous action, and after the movable knife 64 of stand-by power supply switching subassembly 4 breaks away from with the fixed contact 82 of stand-by power supply, movable knife 64 has the traction effect to the fixed contact 82 bottom of stand-by power supply this moment, so along with the rotation of movable knife 64 and through second haulage rope 96 pulling slide 91 in the slide, can overcome the resilience force of supporting spring 92 and promote guide bar 93 and remove, then promote the removal of cut off insulation board 94 to being close to switch knife subassembly 6, because the bending ware 95 has the spacing effect to cut off insulation board 94, therefore in the removal in-process of cut off insulation board 94, the bending ware 95 can be with cut off insulation board 94 and fixed contact 82 radian the same separation blade, can be laminated with the fixed contact 82 bottom of stand-by power supply at the in-process that cut off insulation board 94 is bent, because cut off insulation board 94 has magnetism and is opposite with the magnetism of fixed contact 82 on the right movable knife 64, cut off 94 can move up along with the rotation of second haulage rope 96, cut off insulation board 94 can overcome the resilience force and promote the guide bar 93, then promote to cut off insulation board 94 to move to the direction towards the direction of switch off insulation board 94, can realize the insulation board 94 and take off the same time, can realize the insulation board and take off the insulation board with the insulation board and the side and the fixed contact 82 by the permanent magnet with the insulation board.
And although the standby power supply is not connected into a circuit at this time, the magnetic quenching assembly 9 can be caused to be in a working state along with the reset of the side driving assembly 5, namely, the magnetic quenching assembly 9 is attached to the side fixed contact 82, so that the wrapping protection of the fixed contact 82 on the standby power supply can be realized, and the air quenching assembly 7 and the magnetic quenching assembly 9 are in a protection state at this time.
It is further to be noted that, the outer end of guide bar 93 is fixed with the holder, and cut off insulation board 94 and pass through fastening bolt to be fixed in the holder, the bender 95 is including fixing the branch in the fixed contact 82 bottom, branch bottom fixedly connected with radian and the same arc cover of fixed contact 82, and the arc cover is close to one side lateral wall of holder on integrated into one piece be provided with the flattening cover, and flattening cover and cut off insulation board 94 set up relatively, be convenient for realize the centre gripping fixed while also be convenient for follow-up maintenance change to cut off insulation board 94 through the holder like this, the arc cover can be to cut off insulation board 94 and bend into the arc piece with fixed contact 82 looks adaptation, and cut off insulation board 94 can realize buckling at will, and the angle is fixed after buckling, the effect is the same with the bent bar of head of a bed mobile phone support, can realize buckling and can fix under the exogenic action, thereby realize the arc extinction to fixed contact 82, more importantly, cut off insulation board 94 outside is the insulation cover, the embedded has the magnetic sheet opposite with permanent magnet 721 magnetism, can utilize the magnetic blast realization to realize to the effect of flattening, and the purpose of cutting off insulation board 94 just is convenient to reset to realize the flattening.
Examples
When the driving component 5 drives the switch blade component 6 to act, the driving force is provided for the contact between the movable blade 64 and the fixed contact 82 only by virtue of the traction force of the driving component 5, so that the contact tightness between the movable blade 64 and the fixed contact 82 needs to be further enhanced, and the following improvement scheme is proposed:
referring to fig. 10, the counterweight assembly 10 includes a main counterweight hollow ball 101 and an auxiliary counterweight hollow ball 102 slidably mounted on top of a limiting plate 63, the main counterweight hollow ball 101 and the auxiliary counterweight hollow ball 102 are connected by a wire rope 103, a bracket sleeved on the wire rope 103 is fixed on the top of the turntable 62, a limiting ring 104 is fixed on the wire rope 103, pressure sensors are fixedly mounted on opposite side walls of the two sets of limiting rings 104, and the pressure sensors are electrically connected with the ac output detector 2.
Therefore, when a group of driving components 5 act, namely, the switching knife components 6 are driven to rotate, so that the main weight hollow ball 101 and the auxiliary weight hollow ball 102 at the top of the switching knife components 6 move in opposite directions at the upper parts of the driving components, wherein carbon dioxide gas and dry powder are filled in the main weight hollow ball 101 and the auxiliary weight hollow ball 102, the gravity of the dry powder can be utilized to drive the main weight hollow ball 101 and the auxiliary weight hollow ball 102 to move towards the moving knife 64 at the side which is just separated when the switching knife components 6 act, and then the rotating moment of the non-working moving knife 64 around the rotating shaft 61 is given under the action of the gravity of the main weight hollow ball 101 or the auxiliary weight hollow ball 102, the rotating moment can increase the fitting degree of the working moving knife 64 to the fixed contact 82, the connection tightness is improved, the moving knife 64 is prevented from separating from the fixed contact 82, and the problem of poor fitting degree of the moving knife 64 to the fixed contact 82 is solved.
Examples
If the load on the fixed contact 82 is large, the arc generated when the movable switch blade 64 and the fixed contact 82 are separated from each other is large, and if the arc extinguishing effect cannot be achieved by simply utilizing the magnetic blowing effect, the following improvement scheme is proposed based on the fact that:
referring to fig. 3-9, the air-blowing arc extinguishing assembly 7 is provided with a drainage assembly 72, the drainage assembly 72 includes a protective insulating cover 722, a permanent magnet 721 is fixed in the protective insulating cover 722, an arc extinguishing grid plate 723 is integrally formed at the outer side of the bottom of the protective insulating cover 722, the air-jet head 65 and the drainage assembly 72 are oppositely arranged, the air-jet head 65 is connected with an external air pump through a conduit, and the external air pump is electrically connected with the ac output detector 2.
The electric arc is generated between the movable knife 64 and the fixed contact 82 on the side which is just separated, along with the upward movement of the isolating and insulating plate 94 and the downward movement of the drainage component 72, the magnetic attraction flow action between the isolating and insulating plate 94 and the permanent magnet 721 is still adopted in the early stage, not only the electric arc is drained, but also the magnetic blowout of the electric arc is realized by utilizing the magnetic attraction, the work of the external air pump is controlled by the alternating current output detector 2, the breakdown of the isolating and insulating plate 94 is not caused by the electric arc, the electric arc is drained into the protective insulating cover 722 under the action of the isolating and insulating plate 94 and the permanent magnet 721, and in the process of moving the movable knife 64 to the side which is just separated by the movable knife 64, the limit ring 104 is not contacted with the support until the movable knife 64 and the fixed contact 82 of the other side are contacted, at this moment, the limit ring 104 and the support are contacted, the limit can be realized for the counterweight component 10, meanwhile, the pressure sensor on the limit ring 104 detects the pressure, at this moment, the alternating current output detector 2 can control the work of the external air pump, the nitrogen gas is guided into the air jet head 65 through the guide pipe, and then the jet head 65 can drain the electric arc into the protective insulating cover 722 under the action of the isolating and the action of the permanent magnet 721, and the arc extinguishing plate 723 can be decomposed by the arc-quenching component, and the arc-quenching blade 723 through the blowing-quenching blade, and the blowing-quenching component, and the arc quenching device can be realized.
It should be noted that, in the use process of the movable brake blade 64, serious abrasion is inevitably caused between the movable brake blade 64 and the fixed contact 82 after frequent switching actions, arc breakdown easily occurs in the later stage to cause fire disaster, under the condition of arc breakdown, the temperature near the arc can be rapidly increased, in order to solve the problem, carbon dioxide gas and dry powder are filled in the main weight hollow ball 101 and the auxiliary weight hollow ball 102, so that the carbon dioxide in the main weight hollow ball 101 and the auxiliary weight hollow ball 102 is promoted to expand by utilizing the temperature of the fire, and the carbon dioxide in the main weight hollow ball 101 and the auxiliary weight hollow ball 102 is expanded and burst after reaching a certain temperature to release the dry powder to complete fire extinguishing treatment at the brake blade, so that the protection of a switching assembly is finished, for example, the main weight hollow ball 101 and the auxiliary weight hollow ball 102 are set to be aluminum foil balls, so that the main weight hollow ball 101 and the auxiliary weight hollow ball 102 can reach the melting point after the arc breakdown and the temperature reaches 660 ℃, burst to release the carbon dioxide and dry powder to complete and operate the fire extinguishing.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and 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, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The utility model provides an alternating current power supply switches power supply protection component, includes basic subassembly, its characterized in that: an alternating current output detector (2) is fixedly installed in the base component, a main power supply switching component (3) is arranged on the left side of the alternating current output detector (2), a standby power supply switching component (4) is arranged on the right side of the alternating current output detector (2), the main power supply switching component (3) and the standby power supply switching component (4) are identical in structure composition and symmetrically arranged on the left side and the right side of the alternating current output detector (2), a switching knife component (6) which is rotationally connected inside the base component is arranged below the alternating current output detector (2), and a counterweight component (10) is arranged at the top of the switching knife component (6);
the main power supply switching assembly (3) comprises a driving assembly (5) connected with a switching knife assembly (6), an air blowing arc extinguishing assembly (7) is arranged on the driving assembly (5), a power supply electrifying contact (8) for switching on a main power supply and a standby power supply is arranged in the base assembly, and a magnetic blowing arc extinguishing assembly (9) is arranged on the power supply electrifying contact (8);
the gas-blowing arc extinguishing assembly (7) is provided with a drainage assembly (72), the drainage assembly (72) comprises a protective insulating cover (722), a permanent magnet (721) is fixed in the protective insulating cover (722), and an arc extinguishing grid plate (723) is integrally formed on the outer side of the bottom of the protective insulating cover (722);
the utility model provides a magnetic quenching subassembly (9) is including seting up the slide in power supply circular telegram contact (8) bottom, and slide sliding is equipped with slide (91), fixedly connected with supporting spring (92) on the lateral wall of slide (91), the other end of supporting spring (92) is fixed on the inside wall of slide, be fixed with guide bar (93) on the other lateral wall of slide (91), the other end of guide bar (93) extends power supply circular telegram contact (8) fixedly connected with and cuts off insulation board (94), the bottom of power supply circular telegram contact (8) is fixed with bending machine (95) that can bend the shaping to cutting off insulation board (94).
2. An ac power switching power supply protection assembly as claimed in claim 1, wherein: the foundation assembly comprises a fixing plate (11), a protective shell (12) is fixedly assembled on the front side wall of the fixing plate (11), the left side and the right side of the protective shell (12) are divided into a main power supply connection area and a standby power supply connection area, a main power supply wiring terminal (14) connected with a power supply energizing contact (8) is arranged on the main power supply connection area, a standby power supply wiring terminal (15) connected with the power supply energizing contact (8) is arranged on the standby power supply connection area, and a work indicator lamp (13) corresponding to the two groups of power supply energizing contacts (8) is arranged on the protective shell (12).
3. An ac power switching power supply protection assembly as claimed in claim 1, wherein: the alternating current output detector (2) is internally provided with a first voltage comparison circuit, a second voltage comparison circuit, a latch circuit and a switch circuit, wherein the first voltage comparison circuit and the second voltage comparison circuit are electrically connected with the latch circuit, the latch circuit is electrically connected with the switch circuit, the switch circuit is electrically connected with the main power supply switching component (3) and the standby power supply switching component (4), and the latch circuit is used for controlling the switch circuit to act and disconnecting with a corresponding power supply power contact (8) to form a power supply switching action when the first voltage comparison circuit generates an overvoltage comparison result according to a received first sampling voltage and a first reference voltage or a comparison result generated by a second sampling voltage comparison circuit and a preset second reference voltage is a preset level signal.
4. An ac power switching power supply protection assembly as claimed in claim 1, wherein: the driving assembly (5) comprises a protective shell fixed on the outer side wall of the alternating current output detector (2), a yoke iron cup (51) which is arranged in a cylindrical shape is fixed in the protective shell, a coil (52) is fixedly assembled in the yoke iron cup (51), an armature (53) is slidably assembled in the yoke iron cup (51), a supporting rod (55) is fixed at the top of the armature (53), a reset spring (54) fixed at the top of the armature (53) is sleeved outside the supporting rod (55), the other end of the reset spring (54) is fixed at the top of an inner cavity of the protective shell, and a first traction rope (56) is fixedly connected to the bottom of the armature (53).
5. An ac power switching power supply protection assembly as claimed in claim 4, wherein: the air-blowing arc extinguishing assembly (7) comprises a folding rod (71), the top end of the supporting rod (55) extends out of the top of the driving assembly (5) to be fixedly connected with the folding rod (71), and the drainage assembly (72) is fixed at the bottom end of the folding rod (71).
6. An ac power switching power supply protection assembly as claimed in claim 4, wherein: the switch knife assembly (6) comprises a rotary table (62) which is rotationally connected in a protective shell (12) through a rotary shaft (61), a limiting plate (63) is arranged on the left side and the right side of the rotary table (62) in a symmetrical integrated manner, a moving knife (64) which is 120 degrees with the limiting plate (63) in an included angle is arranged on the other end of the limiting plate (63) in an integrated manner, the bottom end of the moving knife (64) is fixedly connected with the other end of a second traction rope (96), the included angle between the limiting plate (63) is 150 degrees, the bottom of a first traction rope (56) extends out of the bottom of a driving assembly (5) and is fixed at the top of the outer end of the limiting plate (63), and a jet head (65) is fixed on the outer side wall of the limiting plate (63).
7. An ac power switching power supply protection assembly as claimed in claim 5, wherein: the power supply energizing contact (8) comprises an insulating seat (81) fixed inside the protective shell (12), a fixed contact (82) is fixedly arranged on the insulating seat (81), and the drainage component (72) and the fixed contact (82) are oppositely arranged.
8. An ac power switching power supply protection assembly as claimed in claim 6, wherein: the counterweight assembly (10) comprises a main counterweight hollow ball (101) and an auxiliary counterweight hollow ball (102) which are slidably assembled at the top of the limiting plate (63), the main counterweight hollow ball (101) and the auxiliary counterweight hollow ball (102) are connected through a steel wire rope (103), a support sleeved on the steel wire rope (103) is fixed at the top of the turntable (62), and a limiting ring (104) is fixed on the steel wire rope (103).
9. An ac power switching power supply protection assembly as claimed in claim 6, wherein: the jet head (65) and the drainage component (72) are oppositely arranged, the jet head (65) is connected with an external air pump through a conduit, and the external air pump is electrically connected with the alternating current output detector (2).
10. An ac power switching power supply protection assembly as claimed in claim 7, wherein: the outer end of guide bar (93) is fixed with the holder, just cut off insulation board (94) through fastening bolt fastening in the holder, bending machine (95) including fixing the branch in stationary contact (82) bottom, branch bottom fixedly connected with radian and the same arc cover of stationary contact (82), and the arc cover is provided with the exhibition flat cover near integrated into one side lateral wall of holder on integrated into one piece, just exhibition flat cover and cut off insulation board (94) set up relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310968503.7A CN117175770B (en) | 2023-08-03 | 2023-08-03 | Alternating current power supply switching power supply protection assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310968503.7A CN117175770B (en) | 2023-08-03 | 2023-08-03 | Alternating current power supply switching power supply protection assembly |
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| CN117175770A CN117175770A (en) | 2023-12-05 |
| CN117175770B true CN117175770B (en) | 2024-03-29 |
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| CN202310968503.7A Active CN117175770B (en) | 2023-08-03 | 2023-08-03 | Alternating current power supply switching power supply protection assembly |
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| CN2731812Y (en) * | 2004-09-22 | 2005-10-05 | 殷金先 | Small power source switching device |
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| CN213277963U (en) * | 2020-10-09 | 2021-05-25 | 江苏锦泰电力科技有限公司 | Switch breaker with long service life |
| WO2022099934A1 (en) * | 2020-11-10 | 2022-05-19 | 东莞市中汇瑞德电子股份有限公司 | High voltage direct current relay having auxiliary contact |
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2023
- 2023-08-03 CN CN202310968503.7A patent/CN117175770B/en active Active
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| CN2731812Y (en) * | 2004-09-22 | 2005-10-05 | 殷金先 | Small power source switching device |
| CN101350260A (en) * | 2008-09-03 | 2009-01-21 | 深圳市泰永科技股份有限公司 | Automatic transfer switch electric appliance for AC/DC mixing device |
| CN112017898A (en) * | 2020-09-01 | 2020-12-01 | 河源市省科院研究院 | State monitoring device for high-power supply equipment and using method |
| CN213277963U (en) * | 2020-10-09 | 2021-05-25 | 江苏锦泰电力科技有限公司 | Switch breaker with long service life |
| WO2022099934A1 (en) * | 2020-11-10 | 2022-05-19 | 东莞市中汇瑞德电子股份有限公司 | High voltage direct current relay having auxiliary contact |
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| CN117175770A (en) | 2023-12-05 |
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