CN118137214B - AC/DC serial complementary power transmission and distribution device - Google Patents
AC/DC serial complementary power transmission and distribution device Download PDFInfo
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Abstract
The invention provides an alternating current-direct current serial complementary power transmission and distribution device, and belongs to the technical field of power distribution circuit devices. The invention comprises a rectifier, a power transmission line and a heat radiation fan fixedly arranged at the rear side of the rectifier, wherein the end part of the power transmission line is fixedly connected with a relay terminal, a circuit board and a plurality of wiring terminals are arranged on the rectifier, a shielding plate is fixedly arranged between adjacent wiring terminals, and the invention further comprises: the positioning and mounting assembly, the contact induction assembly and the flow-guiding arc-extinguishing assembly; through the cooperation of the induction plate, the miniature motor and the current sensor, the device can induce the current change generated by the contacts, thereby controlling the rotation of the miniature motor, realizing the timely switching of the contacts and ensuring the stability and efficiency in the power transmission process; the design of explosion chamber can respond the electric arc that main contact and contact recess department appear rapidly, leads to the electric arc region through SF 6 gaseous laminar flow state accuracy, realizes quick cooling and arc extinction, has reduced the potential safety hazard because of electric arc leads to.
Description
Technical Field
The invention relates to the technical field of power distribution circuit devices, in particular to an alternating current-direct current serial complementary power transmission and distribution device.
Background
In recent years, with development of various dc power generation technologies such as photovoltaic power generation, an ac/dc hybrid power transmission and distribution system has become a research hotspot. In an ac-dc serial complementary power transmission and distribution device, an inverter is used as a core element for connecting an ac power grid and a dc power grid, and has a nonlinear time-varying characteristic, so that the transmission characteristic of fault electric quantity in the regulation and control process causes complex interaction effects on the power grids at two sides. An inverter is a broad term referring to a device capable of converting a form of electrical energy, including a rectifier and an inverter. In an ac-dc serial complementary power transmission and distribution device, a rectifier is very critical, and the rectifier is responsible for converting ac power into dc power so as to transmit and distribute the dc power in a dc system.
In the prior art, the terminal connection of the conventional rectifier is mostly exposed through screw fixation, environmental factors such as humidity and pollution may cause corrosion of metal contact points, metal terminals are exposed in the air to be oxidized to cause increase of contact resistance, and meanwhile frequent voltage change may cause the terminals to bear high electrical stress, which may cause faults (such as overload or electric arc) at the connection position of the rectifier terminals, so that the conductivity of the terminals is affected, at present, the problems at the connection position of the rectifier terminals are mostly solved by manually screwing the screws for maintenance after circuit breaking, the maintenance process is complicated and time-consuming is long, and meanwhile, potential safety hazards exist, and the problems are overcome; in addition, the terminal connection of the rectifier is easily interfered by surrounding electromagnetic signals, and the electromagnetic signals may come from other electrical equipment, wireless communication equipment and the like, when the electromagnetic signals interfere with the rectifier terminals, the problems of reduced signal transmission quality, reduced current transmission capacity and the like may be caused, the stability and efficiency of power transmission are affected, meanwhile, malfunction or faults of the rectifier may be caused, such as triggering unnecessary protection actions, causing equipment to stop and the like, and the faults not only affect the normal operation of a power system, but also may threaten the safety of personnel and equipment.
How to invent an ac/dc serial complementary power transmission and distribution device to improve these problems becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
To remedy the above-mentioned shortcomings, the present invention provides an ac/dc serial complementary power transmission and distribution device, which aims to improve the above-mentioned problems in the background.
The invention is realized in the following way:
the invention provides an alternating current-direct current serial complementary power transmission and distribution device, which comprises a rectifier, a power transmission line and a heat dissipation fan fixedly arranged at the rear side of the rectifier, wherein a relay terminal is fixedly connected to the end part of the power transmission line, a circuit board and a plurality of wiring terminals are arranged on the rectifier, a shielding plate is fixedly arranged between the adjacent wiring terminals, the wiring terminals are arranged above the circuit board, a power connection column is arranged between the wiring terminals and the circuit board, the power connection column is respectively connected with the wiring terminals and the circuit board in a welded mode, the upper end of the power connection column extends into the wiring terminals, and a contact groove is formed in the power connection column positioned in the wiring terminals, and the alternating current/direct current serial complementary power transmission and distribution device further comprises:
Positioning and installing components: the positioning and mounting assembly is arranged inside the wiring terminal and is used for clamping and mounting the power transmission line;
Contact sensing assembly: the contact induction assembly is arranged inside the wiring terminal and is used for switching the contact according to faults at the contact position of the contact and the grounding column;
Flow-guiding arc-extinguishing assembly: the flow-guiding arc-extinguishing assembly is arranged inside the positioning and mounting assembly and is used for eliminating electric arcs at the contact position of the contact and the electric connection column.
Preferably, the positioning and mounting assembly comprises a mounting cavity and a limiting cavity which are arranged in the wiring terminal, the mounting cavity is internally and slidably connected with a mounting seat, the front end of the mounting cavity penetrates through the side wall of the mounting area of the wiring terminal inside power connection column, the mounting seat is connected with a sealing baffle in a hinged mode close to the side wall of the power transmission line, the limiting cavity is internally and slidably connected with a limiting pull rod, a limiting ring is fixedly connected to the limiting pull rod and positioned in the limiting cavity, and a connecting spring is elastically connected between the upper side wall of the limiting ring and the top of the inner cavity of the limiting cavity.
Preferably, the inside of mount pad is provided with respectively with relay terminal and spacing pull rod assorted notch, the power transmission line passes through relay terminal joint and installs inside the mount pad, relay terminal's inside is provided with two wiring grooves, relay terminal's cross-section is flat slot form setting, relay terminal's upper end is provided with spacing hole, spacing hole's outer terminal surface is the arc, relay terminal's tip and the lower extreme of spacing pull rod are the arc form setting.
Preferably, the cross section of installation cavity is protruding font setting, the clearance is little between the structure that mount pad and sealing baffle constitute and the installation cavity inner chamber, the spacing chamber diapire is less than the distance between spacing pull rod lower extreme and the spacing ring diapire with spacing hole diapire.
Preferably, the contact sensing assembly comprises a driving block and a sensing plate fixedly connected with the front end of the mounting seat, a micro motor and a current sensor are fixedly connected with the outer side wall of the sensing plate in the same direction as the sealing baffle, the front end of the sensing plate is right opposite to the mounting area of the connecting terminal inside electric column, the output end of the micro motor penetrates through the side wall of the sensing plate and is rotationally connected with the side wall of the sensing plate, the output end of the micro motor is fixedly connected with a connecting shaft, the other end of the connecting shaft far away from the micro motor is rotationally connected with the side wall of the sensing plate, and the connecting shaft penetrates through the driving block and is fixedly connected with the connecting shaft.
Preferably, the main contact and the standby contact are installed in the driving block in a sliding clamping manner, the main conductive wire is installed on the end part of the main contact in a plugging manner, the standby conductive wire is installed on the end part of the standby contact in the driving block in a plugging manner, the notch matched with the main conductive wire and the notch matched with the standby conductive wire are respectively arranged on the driving block, the main contact and the standby contact, and the end parts of the main conductive wire and the standby conductive wire are respectively clamped in the corresponding wiring grooves and are electrically connected with the corresponding wiring grooves.
Preferably, the main contact and the standby contact are arranged in the same specification, the section of the main contact is in a knife handle shape, the end part of the main contact far away from the driving block is in an arc shape, the end part of the main contact in an initial state is right opposite to the contact groove and is electrically connected with the contact groove, an included angle between the main contact and the standby contact is the same, the induction plate, the micro motor and the current sensor are electrically connected, and the induction plate is made of nickel-iron alloy.
Preferably, the water conservancy diversion arc-extinguishing component includes two explosion chambers of fixed connection in the induction plate, two the explosion chamber is located main contact and spare contact's both sides and rather than adjacent lateral wall laminating setting respectively, the inside packing of explosion chamber has high pressure SF 6 gas, the cross-section of explosion chamber is the U-shaped and its port department just is right in the contact recess, the port department of explosion chamber is provided with the sealing membrane, towards the sealing membrane the inside of explosion chamber is fixed to be provided with the multiunit guide plate, multiunit the guide plate is along the direction of height equidistance distribution of sealing membrane, multiunit the guide plate is symmetrical pitch arc form setting along the central line of sealing membrane, relay terminal's tip offsets with the rear end lateral wall of explosion chamber.
The beneficial effects of the invention are as follows:
1. Through the cooperative work of the induction plate, the miniature motor and the current sensor, the device can induce the current change generated by the contacts, thereby controlling the rotation of the miniature motor, realizing the timely switching of the contacts and ensuring the stability and efficiency in the power transmission process; the design of the arc extinguishing chamber can rapidly respond to the arc appearing at the main contact and the contact groove, and the laminar state of SF 6 gas is accurately guided to an arc area, so that rapid cooling and arc extinguishing are realized, the arc extinguishing speed and reliability are improved, and the potential safety hazard caused by the arc is reduced;
2. Through the cooperation of the specific wiring terminal, the mounting seat and the sealing baffle, the erosion suffered by the contact is effectively reduced, the service life of the contact is prolonged, meanwhile, the switching contact design allows a user to quickly replace or maintain the rectifier without tools, and the downtime is greatly shortened; through the combination of the specific wiring terminal, the induction plate and the shielding plate and the arrangement of the filter, the transmission of electromagnetic waves is effectively blocked, and the electromagnetic interference at the connection point is reduced, so that the electromagnetic interference resistance of the end part of the transmission line is improved, and the stable operation of the system is ensured;
3. the design of the mounting seat allows the mounting seat to be divided into two parts, and the relay terminal can be easily inserted into the mounting seat by splitting the mounting seat, so that the specific design of the relay terminal ensures stable connection and easy positioning of the electric wire, improves the mounting efficiency and reduces the mounting difficulty; the mounting seat and the sealing baffle are matched for use, so that effective isolation is provided for the mounting cavity and the external environment, and hot air is allowed to flow out through the gap, so that a heat dissipation effect is realized, the service life of equipment is prolonged, and the performance stability of the equipment is improved;
4. The relay terminal and the mounting seat are physically limited through the cooperation of the connecting spring, the limiting hole and the limiting pull rod, so that the correct position of the relay terminal and the mounting seat in the mounting cavity is ensured, the stable transmission of electric power is ensured through the design, and the risk of electric power failure caused by improper positions is reduced; the sealing baffle not only serves as a protection device, but also can serve as a handle during disassembly, so that the assembly is convenient to maintain and replace, the maintainability of the equipment is improved, and the maintenance cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
Fig. 2 is a schematic diagram of a back structure of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a cross-sectional structure of a rectifier terminal of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
Fig. 4 is an enlarged schematic structural diagram of a position a in fig. 3 of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
Fig. 5 is a schematic diagram of a contact structure between a power receiving column and a main contact of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a connection structure between a circuit board and a connection terminal of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an internal structure of a connection terminal of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
Fig. 8 is an exploded schematic view of an internal structure of a connection terminal of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a cross-sectional structure of an arc extinguishing chamber of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
Fig. 10 is a schematic diagram of a cross-sectional structure of a relay terminal of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
Fig. 11 is a schematic diagram of a sealing film and a baffle structure of an ac/dc serial complementary power transmission and distribution device according to an embodiment of the present invention;
fig. 12 is a schematic diagram of an ac/dc serial complementary power transmission and distribution device mounting base and an induction plate structure according to an embodiment of the present invention.
In the figure: 1. a rectifier; 2. a heat dissipation fan; 3. a connection terminal; 4. a power transmission line; 5. a mounting base; 6. an arc extinguishing chamber; 7. a main contact; 8. a standby contact; 9. a spacing cavity; 10. a driving block; 11. a connecting shaft; 12. a micro motor; 13. a current sensor; 101. a circuit board; 102. a power connection column; 301. a shielding plate; 302. a mounting cavity; 401. a relay terminal; 402. a limiting hole; 403. wiring grooves; 501. an induction plate; 502. a sealing baffle; 601. a sealing film; 602. a deflector; 701. a main electric wire; 801. a standby conductive wire; 901. a limit pull rod; 902. a limiting ring; 903. and a connecting spring.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, 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 some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Referring to fig. 1-5, an ac/dc serial complementary power transmission and distribution device includes a rectifier 1, a power transmission line 4, and a heat dissipation fan 2 fixedly disposed at the rear side of the rectifier 1, an end portion of the power transmission line 4 is fixedly connected with a relay terminal 401, a circuit board 101 and a plurality of terminals 3 are disposed on the rectifier 1, a shielding plate 301 is fixedly disposed between adjacent terminals 3, the specific terminals 3 and the shielding plate 301 are combined with each other, a filter disposed on the circuit board 101 is further combined, propagation of electromagnetic waves can be effectively blocked, electromagnetic interference is reduced, an anti-electromagnetic interference capability of the end portion of the power transmission line 4 can be effectively improved, stable operation of the system is ensured, the terminals 3 are disposed above the circuit board 101, a power connection column 102 is disposed between the terminals 3 and the circuit board 101, the power connection column 102 is respectively welded with the terminals 3 and the circuit board 101, an upper end of the power connection column 102 extends into the terminal 3, and a contact groove is disposed on the power connection column 102 located in the terminal 3, and the contact groove is further provided with:
positioning and installing components: the positioning and mounting assembly is arranged in the wiring terminal 3 and is used for clamping and mounting the power transmission line 4;
Contact sensing assembly: the contact induction component is arranged in the wiring terminal 3 and is used for switching the contacts according to faults at the contact positions of the contacts and the grounding column 102;
Flow-guiding arc-extinguishing assembly: the flow-guiding arc-extinguishing assembly is arranged in the positioning installation assembly and is used for eliminating electric arcs at the contact position of the contact and the power connection column 102;
Further, the positioning and mounting assembly comprises a mounting cavity 302 and a limiting cavity 9 which are arranged in the wiring terminal 3, the mounting cavity 302 is slidably connected with the mounting seat 5, the mounting seat 5 is composed of two parts, the two parts of the mounting seat 5 can be clamped by a concave-convex buckle structure or stuck by glue, the front end of the mounting cavity 302 penetrates through the side wall of a mounting area of the power receiving column 102 in the wiring terminal 3, the mounting seat 5 is hinged with a sealing baffle 502 close to the side wall of the power transmission line 4, the mounting cavity 302 can be blocked from the external environment through the sealing baffle 502 on one hand, the mounting seat 5 can be taken as a handle when being dismounted, the mounting seat 5 is convenient to dismount, the limiting cavity 9 is slidably connected with a limiting pull rod 901, a limiting ring 902 is fixedly connected to the limiting pull rod 901 in the limiting cavity 9, and a connecting spring 903 is elastically connected between the upper side wall of the limiting ring 902 and the top of the inner cavity of the limiting cavity 9;
It should be noted that: the inside of the mounting seat 5 is respectively provided with a notch matched with the relay terminal 401 and the limit pull rod 901, the power transmission line 4 is clamped and mounted in the inside of the mounting seat 5 through the relay terminal 401, the inside of the relay terminal 401 is provided with two wiring grooves 403, the section of the relay terminal 401 is in a flat groove shape, so that the relay terminal is conveniently positioned, the upper end of the relay terminal 401 is provided with a limit hole 402, the outer end surface of the limit hole 402 is arc-shaped, the end part of the relay terminal 401 and the lower end of the limit pull rod 901 are arc-shaped, through the arrangement, one side of the relay terminal 401 with the limit hole 402 is upwards inserted into the mounting seat 5 directly, the relay terminal 401 can be limited through the limit pull rod 901, the section of the mounting cavity 302 is in a convex shape, the gap between the structure formed by the mounting seat 5 and the sealing baffle 502 and the inner cavity 302 is small, the hot air can flow out through the gap is ensured, the distance between the limit cavity 9 and the bottom wall of the limit hole 402 is smaller than the distance between the lower end of the limit pull rod 901 and the limit pull rod 902, and the limit pull rod 902 is ensured, and the limit terminal 401 can be simultaneously limited by connecting the spring 903, the limit pull rod 901 and the limit pull rod 5 can be matched with the limit pull rod 401 and the limit seat 5;
Referring to fig. 6 to 12, the contact sensing assembly includes a driving block 10 and a sensing plate 501 fixedly connected to the front end of the mounting seat 5, wherein a micro motor 12 and a current sensor 13 are fixedly connected to the outer side wall of the sensing plate 501 in the same direction as the sealing baffle 502, the front end of the sensing plate 501 is right opposite to the mounting area of the electric column 102 inside the wiring terminal 3, the output end of the micro motor 12 penetrates through the side wall of the sensing plate 501 and is rotationally connected with the side wall of the sensing plate 501, the output end of the micro motor 12 is fixedly connected with a connecting shaft 11, the other end of the connecting shaft 11 far away from the micro motor 12 is rotationally connected with the side wall of the sensing plate 501, the connecting shaft 11 penetrates through the driving block 10 and is fixedly connected with the connecting shaft 11, and the connecting shaft 11 can be controlled to rotate through the micro motor 12 so as to drive the driving block 10 to rotate;
Further, a main contact 7 and a standby contact 8 are installed in the driving block 10 in a sliding clamping manner, a main conductive wire 701 is installed at the end part of the main contact 7 in the driving block 10 in a plugging manner, a standby conductive wire 801 is installed at the end part of the standby contact 8 in the driving block 10 in a plugging manner, notches matched with the main conductive wire 701 and the standby conductive wire 801 are respectively arranged on the driving block 10, the main contact 7 and the standby contact 8, and the end parts of the main conductive wire 701 and the standby conductive wire 801 are respectively clamped in the corresponding wiring grooves 403 and are electrically connected with the corresponding wiring grooves, so that the contacts can be switched in time through rotation of the driving block 10;
It should be noted that: the main contact 7 and the standby contact 8 are arranged in the same specification, the section of the main contact 7 is in a knife handle shape, the end part of the main contact 7 far away from the driving block 10 is in an arc shape, the end part of the main contact 7 in an initial state is right opposite to the contact groove and is electrically connected with the contact groove, stable transmission of electric power between the main contact 7 and the power receiving column 102 is ensured, an included angle between the main contact 7 and the standby contact 8 is 90 degrees, the induction plate 501, the micro motor 12 and the current sensor 13 are electrically connected, the induction plate 501 is made of nickel-iron alloy, the nickel-iron alloy has very high magnetic conductivity and low hysteresis loss, a magnetic field generated by current passing through the contact can be effectively concentrated and guided, the signal intensity is improved, the signal can be directly transmitted to the current sensor 13 through the induction plate 501, and then the rotation of the micro motor 12 is controlled through the current sensor 13, the rotation amplitude of the micro motor 12 is controlled through a preset program, and the included angle between the micro motor 12 and the contact is equal, so that normal switching of the contact is realized;
Further, the flow-guiding arc-extinguishing assembly comprises two arc-extinguishing chambers 6 fixedly connected in the induction plate 501, the two arc-extinguishing chambers 6 are respectively positioned at two sides of the main contact 7 and the standby contact 8 and are attached to the adjacent side walls of the main contact 7 and the standby contact 8, when an arc appears at the positions of the main contact 7 and the contact grooves, the high temperature generated by the arc can be transmitted to the inside of the arc-extinguishing chambers 6 through the main contact 7, the inside of the arc-extinguishing chambers 6 is filled with high-pressure SF 6 gas, the cross section of the arc-extinguishing chambers 6 is U-shaped, the ports of the arc-extinguishing chambers 6 are opposite to the contact grooves, sealing films 601 are arranged at the ports of the arc-extinguishing chambers 6, after the pressure breaks through a threshold value, a plurality of groups of flow-guiding plates 602 are fixedly arranged in the direction of the inside of the arc-extinguishing chambers 6 of the sealing films 601, and the SF 6 gas which is heated and expands breaks through the sealing films 601 and passes through the plurality of groups of flow-guiding plates 602 and is directly guided to an arc area, so that timely arc-extinguishing treatment is realized;
It should be noted that: the multiunit guide plate 602 distributes along the direction of height equidistance of sealing membrane 601, multiunit guide plate 602 is symmetrical pitch arc form setting along the central line of sealing membrane 601, through setting up like this, SF 6 gas of high pressure can realize laminar flow characteristic, the electric arc that the contact department produced of elimination that can be better, the tip of relay terminal 401 offsets with the rear end lateral wall of explosion chamber 6, can carry out spacingly to it when relay terminal 401 installs through explosion chamber 6 on the one hand, on the other hand, when dismantling mount pad 5, through the pulling to sealing baffle 502, can directly drive relay terminal 401 and mount pad 5 simultaneously break away from binding post 3 by explosion chamber 6.
The working principle of the alternating current-direct current serial complementary power transmission and distribution device is as follows: during installation, the design of the installation seat 5 allows the installation seat 5 to be divided into two parts, which greatly simplifies the installation process of the device, the installation seat 5 is firstly divided into two parts (specifically, the two parts of the installation seat 5 can be clamped by a concave-convex clamping structure or stuck by glue), the relay terminal 401 is inserted into the installation seat 5, the main electric wire 701 and the standby electric wire 801 can be correspondingly clamped into the wiring groove 403 on the relay terminal 401 (the wiring groove is limited by the arc extinguishing chamber 6), then the two parts of the installation seat 5 can be buckled (or stuck by glue), the design of the relay terminal 401 (comprising the two wiring grooves 403 and a flat section) ensures stable connection and easy positioning of the electric wire, then the limit pull rod 901 is pulled, at this time, the limit pull rod 901 can drive the limit ring 902 to compress the connecting spring 903, then the sealing baffle 502 hinged on one side of the installation seat 5 is controlled to slide and push the installation seat 5 into the installation cavity 302, at this time, the main contact 7 can be directly abutted against the contact grooves on the electric post 102, and finally the sealing baffle 502 can be pushed to a position parallel to the surface of the wiring terminal 3, so that the installation cavity 302 and the heat-insulating component 302 can be conveniently detached, and the heat-insulating component can be further provided with the heat-insulating component, and the heat-insulating component can be easily removed, and the heat-insulating component can be used as the heat-insulating component is also used for the installation cavity is provided;
Through the cooperation of the connecting spring 903, the limiting hole 402 and the limiting pull rod 901, physical limiting is provided for the relay terminal 401 and the mounting seat 5, the correct position of the relay terminal 401 and the mounting seat 5 in the mounting cavity 302 is ensured, so that stable transmission of electric power is ensured, on one hand, the transmission line 4 and the mounting seat 5 can be simultaneously separated from the wiring terminal 3 by dragging the sealing baffle 502, on the other hand, the relay terminal 401 can be disconnected from the contact conducting wire, great convenience is provided for maintenance of the contact, and meanwhile, the risk in operation is reduced;
Through the specific wiring terminal 3, the induction plate 501 and the shielding plate 301, and the arrangement of the filter on the circuit board 101, the transmission of electromagnetic waves can be effectively blocked, the electromagnetic interference at the connection point is reduced, the electromagnetic interference resistance of the end part of the transmission line 4 can be effectively improved, and the stable operation of the system is ensured;
Because the induction plate 501 is made of nickel-iron alloy, and the nickel-iron alloy has very high magnetic permeability and low hysteresis loss, the material can effectively concentrate and guide magnetic fields, so that the magnetic fields generated during current transmission are more concentrated, the overall strength of the magnetic fields is enhanced, the magnetic interference of surrounding areas is reduced, the overall efficiency of the system is improved, the magnetic fields generated by the current passing through the contacts can be effectively concentrated and guided through the induction plate 501, the strength of the induced signals is improved, the current sensor 13 can more accurately detect the current change passing through the contacts, the signals can be directly transmitted to the current sensor 13 through the induction plate 501, the rotation of the micro motor 12 is controlled through the current sensor 13, the rotation amplitude of the micro motor 12 is controlled through a preset program, the included angle between the micro motor 12 and the contacts is equal, the normal switching of the contacts is realized, the current change generated through the contacts is sensed through the cooperative work of the induction plate 501, the micro motor 12 and the current sensor 13, the rotation of the micro motor 12 is controlled, the switching of the contacts is realized through the driving block 10, the switching of the contacts is automatically carried out, the rotation of the contacts is automatically carried out to the opposite to the contact 7, the state is controlled, the stability is ensured, and the stability is controlled, and the state is ensured;
The terminal connection of the conventional rectifier 1 is mostly exposed, environmental factors such as humidity and pollution can lead to corrosion of metal contact points, metal terminals are oxidized when exposed to air, contact resistance is increased, meanwhile, frequent voltage changes can lead to high electrical stress of the terminals, the terminal connection of the rectifier 1 can be caused to be failed, the corrosion of the contact points can be effectively reduced through the cooperation of the specific wiring terminal 3, the mounting seat 5 and the sealing baffle 502, the service life of the contact points is prolonged, in addition, the switching contact point design allows a user to quickly replace or maintain the rectifier 1 without tools, and the conventional screw connection requires tools such as a screwdriver, so that the conventional rectifier 1 is particularly useful in emergency, downtime can be greatly shortened, and the conventional rectifier 1 is more compact than screw connection, and the size of the whole equipment is reduced;
When an arc occurs between the main contact 7 and the contact grooves, a large amount of energy is released in a very short time, so that the temperature of the surrounding space is increased sharply, the high temperature generated by the arc is transferred to the inside of the arc extinguishing chamber 6 through the main contact 7 (because the main contact 7 is attached to the side wall of the arc extinguishing chamber 6, the heat transfer efficiency is high), at the moment, SF 6 gas in the arc extinguishing chamber 6 expands in volume due to heating, the heated and expanded SF 6 gas breaks through the sealing film 601, passes through between the multiple groups of guide plates 602 and is directly guided to an arc area at the contact, the SF 6 gas forms a laminar flow state when passing through the guide plates 602, compared with turbulent flow, the flow of the gas in the laminar flow state is more stable and orderly, the cooling gas is helped to be guided to the arc area accurately, the design reduces turbulence and unnecessary gas kinetic energy loss possibly generated in the arc extinguishing process, the SF 6 gas reaches the arc area in the most effective mode, the arc area is helped to cool the arc area rapidly, and the arc extinguishing speed and reliability are improved;
SF 6 gas has excellent electrical insulation and chemical stability, when being heated by an electric arc, the SF 6 gas can be rapidly diffused and disperse heat, so that the electric arc temperature can be quickly reduced, the SF 6 gas can be decomposed and recombined at high temperature, the decomposition products are also conducive to the arc extinguishing process, the SF 6 gas flowing at high speed can not only cool an electric arc area, but also change the pressure and chemical environment of the electric arc area, so that current is effectively disconnected, timely arc extinguishing treatment is realized, the design between the main contact 7 and the arc extinguishing chamber 6, particularly the arrangement of high-pressure SF 6 gas filled in the arc extinguishing chamber 6, the U-shaped section of the arc extinguishing chamber 6, the sealing film 601 and a plurality of groups of guide plates 602 are jointly acted on the instant arc extinguishing when the electric arc is generated, and the design not only effectively solves the problem of the electric arc, but also ensures the continuity and the safety of electric power transmission;
In summary, the device realizes high-efficiency, stable and safe transmission of electric power through intelligent control, safety protection and modularized design, an automatic switching mechanism and an arc extinguishing system of the device guarantee the reliability of continuous operation, and the consideration of heat dissipation and maintenance ensures the sustainability of long-term use.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
It should be noted that, specific model specifications of the motor need to be determined by selecting a model according to actual specifications of the device, and a specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an alternating current-direct current serial complementary power transmission and distribution device, includes radiator fan (2) of rectifier (1), power transmission line (4) and the fixed setting of rectifier (1) rear side, the tip fixedly connected with relay terminal (401) of power transmission line (4), be provided with circuit board (101) and a plurality of binding post (3) on rectifier (1), adjacent fixedly provided with shield plate (301) between binding post (3), binding post (3) set up in circuit board (101) top, be provided with between binding post (3) and circuit board (101) and connect electric post (102), connect electric post (102) respectively with binding post (3) and circuit board (101) welded connection, connect the upper end of electric post (102) to extend to inside binding post (3), be located in binding post (3) connect electric post (102) on be provided with the contact recess, its characterized in that still includes:
Positioning and installing components: the positioning and mounting assembly is arranged inside the wiring terminal (3) and is used for clamping and mounting the power transmission line (4);
The positioning and mounting assembly comprises a mounting cavity (302) and a limiting cavity (9) which are arranged in a wiring terminal (3), wherein a mounting seat (5) is connected in the mounting cavity (302) in a sliding manner, the front end of the mounting cavity (302) penetrates through the side wall of a mounting area of an internal power connection column (102) of the wiring terminal (3), the mounting seat (5) is connected with a sealing baffle (502) in a hinged manner close to the side wall of a power transmission line (4), a limiting pull rod (901) is connected in the limiting cavity (9) in a sliding manner, a limiting ring (902) is fixedly connected on the limiting pull rod (901) and positioned in the limiting cavity (9), and a connecting spring (903) is elastically connected between the upper side wall of the limiting ring (902) and the top of the inner cavity of the limiting cavity (9);
Contact sensing assembly: the contact induction assembly is arranged in the wiring terminal (3), and switches the contacts according to faults at the contact positions of the contacts and the grounding column (102);
Flow-guiding arc-extinguishing assembly: the flow-guiding arc-extinguishing assembly is arranged inside the positioning and mounting assembly and is used for eliminating electric arcs at the contact position of the contact and the power-receiving column (102).
2. The alternating current-direct current serial complementary power transmission and distribution device according to claim 1, characterized in that notches matched with a relay terminal (401) and a limiting pull rod (901) are respectively arranged in the mounting seat (5), the power transmission line (4) is installed inside the mounting seat (5) through the clamping of the relay terminal (401), two wiring grooves (403) are formed in the inside of the relay terminal (401), the cross section of the relay terminal (401) is in a flat groove shape, a limiting hole (402) is formed in the upper end of the relay terminal (401), the outer end face of the limiting hole (402) is arc-shaped, and the end portion of the relay terminal (401) and the lower end of the limiting pull rod (901) are arc-shaped.
3. The alternating current-direct current serial complementary power transmission and distribution device according to claim 2, wherein the section of the installation cavity (302) is in a convex shape, a gap between a structure formed by the installation seat (5) and the sealing baffle (502) and the inner cavity of the installation cavity (302) is small, and the distance between the bottom wall of the limit cavity (9) and the bottom wall of the limit hole (402) is smaller than the distance between the lower end of the limit pull rod (901) and the bottom wall of the limit ring (902).
4. An ac/dc serial complementary power transmission and distribution device according to claim 2, characterized in that, the contact induction assembly comprises a driving block (10) and an induction plate (501) fixedly connected with the front end of the mounting seat (5), the outer side wall of the induction plate (501) in the same direction as the sealing baffle (502) is fixedly connected with a micro motor (12) and a current sensor (13), the front end of the induction plate (501) is just opposite to the mounting area of the internal power connection column (102) of the wiring terminal (3), the output end of the micro motor (12) penetrates through the side wall of the induction plate (501) and is rotationally connected with the same, the output end of the micro motor (12) is fixedly connected with a connecting shaft (11), the other end of the connecting shaft (11) far away from the micro motor (12) is rotationally connected with the side wall of the induction plate (501), and the connecting shaft (11) penetrates through the driving block (10) and is fixedly connected with the same.
5. An ac/dc serial complementary power transmission and distribution device according to claim 4, characterized in that, a main contact (7) and a standby contact (8) are slidably clamped in the driving block (10), a main conductive wire (701) is inserted and installed on the end portion of the main contact (7) located in the driving block (10), a standby conductive wire (801) is inserted and installed on the end portion of the standby contact (8) located in the driving block (10), notches matched with the main conductive wire (701) and the standby conductive wire (801) are respectively arranged on the driving block (10), the main contact (7) and the standby contact (8), and the end portions of the main conductive wire (701) and the standby conductive wire (801) are respectively clamped inside the corresponding wiring groove (403) and are electrically connected with the main conductive wire and the standby conductive wire.
6. The alternating current-direct current serial complementary power transmission and distribution device according to claim 5, wherein the main contact (7) and the standby contact (8) are arranged in the same specification, the section of the main contact (7) is in a handle shape, the end part of the main contact (7) far away from the driving block (10) is in an arc shape, the end part of the main contact (7) in an initial state is right opposite to the contact groove and is electrically connected with the contact groove, an included angle between the main contact (7) and the standby contact (8) is 90 degrees, the induction plate (501), the micro motor (12) and the current sensor (13) are electrically connected, and the induction plate (501) is made of nickel-iron alloy materials.
7. The alternating current-direct current serial complementary power transmission and distribution device according to claim 5, wherein the flow-guiding arc extinguishing assembly comprises two arc extinguishing chambers (6) fixedly connected in an induction plate (501), the two arc extinguishing chambers (6) are respectively positioned at two sides of a main contact (7) and a standby contact (8) and are attached to adjacent side walls, high-pressure SF6 gas is filled in the arc extinguishing chambers (6), the cross section of the arc extinguishing chambers (6) is U-shaped, the ports of the arc extinguishing chambers are opposite to contact grooves, sealing films (601) are arranged at the ports of the arc extinguishing chambers (6), a plurality of groups of flow guiding plates (602) are fixedly arranged in the arc extinguishing chambers (6) towards the sealing films (601), the plurality of groups of flow guiding plates (602) are distributed at equal intervals along the height direction of the sealing films (601), the flow guiding plates (602) are symmetrically arranged in an arc shape along the center line of the sealing films (601), and the ends of the relay terminals (401) are abutted to the side walls at the rear ends of the arc extinguishing chambers (6).
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| CN202410559398.6A CN118137214B (en) | 2024-05-08 | 2024-05-08 | AC/DC serial complementary power transmission and distribution device |
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| CN202410559398.6A CN118137214B (en) | 2024-05-08 | 2024-05-08 | AC/DC serial complementary power transmission and distribution device |
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| CN118137214A CN118137214A (en) | 2024-06-04 |
| CN118137214B true CN118137214B (en) | 2024-07-05 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086937A (en) * | 2007-07-17 | 2007-12-12 | 刘万更 | Intelligent AC vacuum contactor |
| CN110137036A (en) * | 2019-05-16 | 2019-08-16 | 三友联众集团股份有限公司 | A kind of Multi-contact relay |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6480082B1 (en) * | 1996-12-25 | 2002-11-12 | Hitachi, Ltd. | Circuit breaker |
| CN219874198U (en) * | 2023-02-14 | 2023-10-20 | 广东中峰能源科技有限公司 | Low-voltage circuit power-on protection terminal |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086937A (en) * | 2007-07-17 | 2007-12-12 | 刘万更 | Intelligent AC vacuum contactor |
| CN110137036A (en) * | 2019-05-16 | 2019-08-16 | 三友联众集团股份有限公司 | A kind of Multi-contact relay |
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| CN118137214A (en) | 2024-06-04 |
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