CN114999867A - Low-voltage fixed-ratio charge control device - Google Patents
Low-voltage fixed-ratio charge control device Download PDFInfo
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- CN114999867A CN114999867A CN202210759405.8A CN202210759405A CN114999867A CN 114999867 A CN114999867 A CN 114999867A CN 202210759405 A CN202210759405 A CN 202210759405A CN 114999867 A CN114999867 A CN 114999867A
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- 230000005611 electricity Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000875 corresponding effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
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- 230000001070 adhesive effect Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
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- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
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- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
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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
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a low-voltage fixed-ratio cost control device, and relates to the technical field of power equipment; the method comprises the following steps: the load control terminal is used for receiving a control signal sent by the system master station; one end of the brake rod is provided with a closing contact, the other end of the brake rod is provided with a conductive winding, and the conductive winding is electrically connected with the load control terminal; the first permanent magnets are arranged at one end of the conductive winding at intervals, and the magnetic pole directions of the first permanent magnets extend along the axial direction of the conductive winding; the second permanent magnets are arranged at the other end of the conductive winding at intervals, and the magnetic pole directions of the second permanent magnets extend along the axial direction of the conductive winding; the load control terminal can control the direction and the on-off of the current of the conductive winding according to the control signal, and the magnetic pole directions of the first permanent magnet and the second permanent magnet are opposite. The invention controls the current direction of the conductive winding outside the iron core through the load control terminal, controls the movement of the brake lever, and trips and closes according to the electricity charging condition, has the characteristic of simple structure, and is suitable for being widely popularized and applied.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a low-voltage fixed-ratio cost control device.
Background
At present, a trip switch is arranged in an intelligent ammeter executing single electricity price, so that local charge control can be realized; however, low-voltage fixed-ratio users (usually referred to as residential electricity) need to execute a plurality of electricity prices in proportion, and the automation of electric power charge control is difficult to realize. With reference to fig. 1, for a low-voltage fixed-ratio user, a load control terminal and a shunt release are installed in a distribution box of the user, so that when power needs to be cut off, the shunt release is powered through the load control terminal, and thus the shunt release drives the release to work, so as to cut off the power. Although the automatic power-off can be realized, after the user pays the fee, the user needs to automatically switch on the switch, or a switch-on device electrically connected with the load control terminal is additionally arranged so as to automatically switch on the switch through the switch-on device. In addition, the existing shunt release adopts an electromagnet principle, so that a lever is driven by an armature, and a hook is driven by the lever to release. Therefore, the existing low-voltage fixed-ratio cost control device is complex in structure and difficult to popularize in a large quantity.
Disclosure of Invention
Aiming at the technical problem that the existing low-voltage fixed-ratio cost control device has a complex structure; the invention provides a low-voltage fixed-ratio charge control device, which controls the current direction of a conductive winding outside an iron core through a load control terminal, controls the movement of a brake lever, and trips and closes according to the electricity charging condition.
The invention is realized by the following technical scheme:
the invention provides a low-voltage fixed-ratio cost control device, which comprises: the load control terminal is used for receiving a control signal sent by the system master station; the device comprises a brake rod, a load control terminal and a control circuit, wherein one end of the brake rod is provided with a switching-on contact, the other end of the brake rod is provided with a conductive winding, and the conductive winding is electrically connected with the load control terminal; the first permanent magnets are arranged at intervals at one end, opposite to the closing contact, of the conductive winding, and the magnetic pole directions of the first permanent magnets extend along the axial direction of the conductive winding; the second permanent magnet is arranged at one end, far away from the closing contact, of the conductive winding at intervals, and the magnetic pole direction of the second permanent magnet extends along the axial direction of the conductive winding; the load control terminal can control the direction and the on-off of the current of the conductive winding according to the control signal, and the magnetic pole directions of the first permanent magnet and the second permanent magnet are opposite.
The existing low-voltage fixed-ratio cost control device drives a lever through an armature so as to drive a hook to trip through the lever, and although the purpose of power failure can be achieved, the low-voltage fixed-ratio cost control device is complex in structure, needs to be matched with a closing device to be used together, and is difficult to popularize in a large quantity. Therefore, only a small part of the low-voltage user entrance ends are suitable for being provided with the complete fee control device, and most of the low-voltage users still can use electricity when being owed by the users, so that the number of owed users is overstocked at the end of a month. For the part of users, after the system generates the arrearage information on the corresponding date every month, a customer manager needs to make a call or go to the user to prompt collection, and the time is short and the task is heavy. If the user refuses to pay the arrearages, the customer manager needs to perform arrearage brake pulling after fulfilling the notification obligations, and the process is easily influenced by factors such as traffic, weather and the like, so that the workload is increased, and the high-quality service risk and the safety risk are increased.
The low-voltage fixed-ratio charge control device provided by the invention is also provided with a brake lever on the basis of a load control terminal, one end of the brake lever is provided with a closing contact, the other end of the brake lever is provided with a conductive winding electrically connected with the load control terminal, the conductive winding is arranged between the first permanent magnet and the second permanent magnet at intervals, the magnetic pole directions of the first permanent magnet and the second permanent magnet are opposite to each other, the conductive winding is in a power-off state during normal use, and the first permanent magnet and the second permanent magnet cannot drive the brake lever, so that the closing contact is in a closing state.
Therefore, when the load control terminal receives a power-off signal sent by a system main station, a first current is input to the conductive winding, and due to the fact that the magnetic pole directions of the first permanent magnet and the second permanent magnet are opposite, the first permanent magnet repels the conductive winding, and meanwhile the second permanent magnet attracts the conductive winding, the brake rod is driven to move through the combined action of the first permanent magnet and the second permanent magnet, and automatic tripping is achieved. When the load control terminal receives a closing signal sent by a system main station, second current is input to the conductive winding, the direction of the second current is opposite to that of the first current, and due to the fact that the magnetic pole directions of the first permanent magnet and the second permanent magnet are opposite, the second permanent magnet repels the conductive winding while the first permanent magnet attracts the conductive winding, and therefore the brake bar is driven to reset through the combined action of the first permanent magnet and the second permanent magnet, and automatic closing is achieved.
In conclusion, when tripping and closing are needed, the low-voltage fixed-ratio charge control device provided by the invention simultaneously applies acting force on the brake rod through the first permanent magnet and the second permanent magnet, so that the brake rod can obtain enough driving power to generate corresponding action, tripping and closing can be carried out according to the electricity charging condition without adopting a shunt release to drive a lever and additionally configuring a closing device, and the low-voltage fixed-ratio charge control device has the characteristic of simple structure, is suitable for large-scale popularization and application, and avoids inconvenience caused by power consumption when a low-voltage fixed-ratio user is owed for time.
In an optional embodiment, the control signal comprises a trip signal, a close signal and a sustain signal; and under the condition that the load control terminal receives a maintaining signal, the load control terminal disconnects the current of the conductive winding, so that the brake lever keeps a closing or opening state.
In an optional implementation mode, the first permanent magnet is of an annular structure, and the first permanent magnet is sleeved outside the middle part of the brake rod at intervals, so that the first permanent magnet can be installed conveniently, a force transmission part is not required to be arranged, and the size of the cost control actuator can be reduced.
In an optional embodiment, both ends of the conductive winding are provided with limiting rings, and the outer diameter of each limiting ring is larger than the inner diameter of the first permanent magnet; and grooves are formed in one sides, far away from the conductive windings, of the two limiting rings and used for containing viscous grease.
The moving range of the brake bar is limited by the limiting ring, the brake bar is prevented from contacting with other contacts in the tripping process to cause circuit misconnection, and meanwhile, the damage to a closing contact and a closing wire column due to the fact that the stroke is too large in the closing process is avoided. During the use, pack adhesive grease in the slot for adhesive grease is covered whole spacing ring and is set up the side of slot, and then when the spacing ring contacts with corresponding permanent magnet, utilizes the damping characteristic of adhesive grease, plays the cushioning effect, avoids the permanent magnet to break by the impact of spacing ring, and, under the state that conductive winding is not circular telegram, the viscidity of usable adhesive grease bonds spacing ring and corresponding permanent magnet together, ensures the stability of combined floodgate and trip-out state.
In an alternative embodiment, the channel contains viscous grease.
In an optional embodiment, the brake lever comprises a ceramic segment and a magnetizable segment which are connected in sequence, and the conductive winding is wound outside the magnetizable segment to ensure the insulating property among the conductive winding, the magnetizable segment and the closing contact.
In an alternative embodiment, the brake rod is a hollow structure to reduce the weight of the brake rod itself, thereby reducing the resistance when driving the brake rod to move.
In an optional embodiment, the closing contact includes a fixing ring, and the fixing ring is sleeved outside the ceramic segment; closing wings are arranged on two sides of the fixing ring, extend along the length direction of the brake bar, and are shorter than the movable stroke of the brake bar, so that sufficient contact stroke of a closing contact and a closing string is ensured, and closing stability is ensured.
In an optional embodiment, the closing wing is disposed to be inclined toward a direction away from the magnetizable section, and the closing wing is a leaf spring, so that the closing wire is tightly pressed by the leaf spring, and further closing stability is ensured.
In an optional implementation manner, the load control device further comprises a box body, and the load control terminal, the brake lever, the first permanent magnet and the second permanent magnet are all installed in the box body; the box body is matched with a box door, a travel switch is arranged on one side of the box door, the travel switch is electrically connected with the load control terminal, and the load control terminal can feed back a state signal of the travel switch to the monitoring terminal.
Can carry out dustproof and waterproof protection to each component through the box, ensure the normal operating of expense accuse device, and adaptation travel switch on box and chamber door can feed back monitor terminal with the switching state of chamber door in real time to and the discovery chamber door not closed and the condition of opening unusually in time, and then ensure the power consumption safety and avoid stealing electricity.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention provides a low-voltage fixed-ratio charge control device, which is provided with a brake bar on the basis of a load control terminal, wherein one end of the brake bar is provided with a closing contact, the other end of the brake bar is provided with a conductive winding which is electrically connected with the load control terminal, the conductive winding is arranged between a first permanent magnet and a second permanent magnet at intervals, the magnetic pole directions of the first permanent magnet and the second permanent magnet are along the length direction of the winding, and the magnetic pole directions of the first permanent magnet and the second permanent magnet are opposite, when tripping and closing are needed, acting force is simultaneously exerted on the brake bar through the first permanent magnet and the second permanent magnet, so that the brake bar can obtain enough driving power to generate corresponding action, a shunt release is not needed to drive a lever to trip, a closing device is not needed to be additionally arranged, the tripping and closing can be carried out according to the electricity consumption charging condition, the low-voltage fixed-ratio charge control device has the characteristic of simple structure, and is suitable for being popularized and applied in large quantity, the inconvenience caused by the fact that the user can still use electricity when the low voltage is determined to be time-consuming is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
In the drawings:
FIG. 1 is a schematic diagram of a conventional cost control device;
FIG. 2 is a schematic circuit diagram of a low-voltage fixed-ratio cost control device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an actuator according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a brake lever according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a retainer ring according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a closing contact according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a principle of a door operation signal feedback circuit according to an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
10-load control terminal, 11-extension spring, 12-chain, 13-hook, 14-shunt release, 15-lever, 16-armature and 17-hinged seat;
20-a brake bar, 21-a ceramic section, 22-a magnetizable section, 30-a closing contact, 31-a fixed ring, 32-a closing fin, 40-a conductive winding, 41-a limiting ring, 42-a groove, 50-a first permanent magnet, 60-a second permanent magnet and 70-a travel switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. The embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the embodiments of the present application, the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like refer to orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that are conventionally used in the product of the present application, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are intended merely to facilitate the description of the present application and to simplify the description, but do not indicate or imply that the device or element that is referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present application.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "open," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
With reference to fig. 2, the present embodiment provides a low-pressure fixed-ratio cost control device, including: the load control terminal 10 is used for receiving a control signal sent by a system main station; a switch rod 20, one end of the switch rod 20 being provided with a switch-on contact 30, the other end of the switch rod 20 being provided with a conductive winding 40, the conductive winding 40 being electrically connected to the load control terminal 10; the first permanent magnets 50 are arranged at intervals at one end, facing the closing contact 30, of the conductive winding 40, and the magnetic pole direction of the first permanent magnets 50 extends along the axial direction of the conductive winding 40; the second permanent magnet 60 is arranged at one end of the conductive winding 40, which is far away from the closing contact 30, at intervals, and the magnetic pole direction of the second permanent magnet 60 extends along the axial direction of the conductive winding 40; the load control terminal 10 can control the direction and on-off of the current of the conductive winding 40 according to the control signal, and the magnetic pole directions of the first permanent magnet 50 and the second permanent magnet 60 are opposite.
It can be understood that, the cost control device integrating tripping and closing needs a tripping signal and a closing signal, and in this example, both closing and tripping are executed by the same execution mechanism, and in order to avoid control program error, the control signals include a tripping signal, a closing signal and a maintaining signal; in a state where the load control terminal 10 receives the maintaining signal, the load control terminal 10 disconnects the current of the conductive winding 40, so that the brake lever 20 maintains a closing or opening state.
Referring to fig. 3, the second permanent magnet 60 is disposed at an end of the conductive winding 40 away from the closing contact 30, and may be directly fixed at an end of the brake bar 20 at an interval, only in an axial direction of the conductive winding 40. The first permanent magnet 50 needs to be fitted to the brake lever 20 at an interval, and if the first permanent magnet 50 is made of a solid structure, the brake lever 20 needs to be avoided, which not only has a large volume, but also tends to cause uneven attraction or repulsion of the first permanent magnet 50 on the conductive winding 40, resulting in jamming of the brake lever 20. In view of this, in this embodiment, the first permanent magnet 50 is an annular structure, and the first permanent magnet 50 is sleeved outside the middle portion of the brake lever 20 at an interval, so as to facilitate the installation of the first permanent magnet 50, and a force transmission component is not required to be arranged, so that the volume of the cost control actuator can be reduced.
For the material of the first and second permanent magnets 50 and 60, neodymium iron boron is usually used to ensure that the first and second permanent magnets 50 and 60 can provide sufficient magnetic field strength.
Referring to fig. 4, the brake lever 20 includes a ceramic segment 21 and a magnetizable segment 22 connected in sequence, and the conductive winding 40 is wound outside the magnetizable segment 22 to ensure the insulating property between the conductive winding 40, the magnetizable segment 22 and the closing contact 30. To ensure that the magnetizable segment 22 can be demagnetized quickly, the magnetizable segment 22 is typically made of soft iron or silicon steel.
On this basis, the brake lever 20 has a hollow structure to reduce the weight of the brake lever 20 itself, thereby reducing resistance when the brake lever 20 is driven to move.
In addition, as shown in fig. 1, in the conventional low-voltage fixed-ratio cost control device, the lever 15 is driven by the armature 16, and the hook 13 is driven by the lever 15 to be released, so that the purpose of power failure can be achieved. Therefore, only a small part of the low-voltage user entrance ends are suitable for being provided with the complete fee control device, and most of the low-voltage users still can use electricity when being owed by the users, so that the number of owed users is overstocked at the end of a month. For the part of users, after the system generates the arrearage information on the corresponding date every month, a customer manager needs to make a call or go to the user to prompt collection, and the time is short and the task is heavy. If the user refuses to pay the arrearages, the customer manager needs to perform arrearage brake pulling after fulfilling the notification obligations, and the process is easily influenced by factors such as traffic, weather and the like, so that the workload is increased, and the high-quality service risk and the safety risk are increased.
The low-voltage fixed-ratio cost control device provided by this embodiment is further provided with a brake lever 20 on the basis of the load control terminal 10, one end of the brake lever 20 is provided with a closing contact 30, the other end of the brake lever is provided with a conductive winding 40 electrically connected with the load control terminal 10, the conductive winding 40 is arranged between the first permanent magnet 50 and the second permanent magnet 60 at intervals, the magnetic pole directions of the first permanent magnet 50 and the second permanent magnet 60 are along the length direction of the winding, and the magnetic pole directions of the first permanent magnet 50 and the second permanent magnet 60 are opposite, when the device is used normally, the conductive winding 40 is in a power-off state, and the first permanent magnet 50 and the second permanent magnet 60 cannot drive the brake lever 20, so that the closing contact 30 is in a closing state.
Therefore, when the load control terminal 10 receives a power-off signal (trip signal) from the system main station, a first current is input to the conductive winding 40, and due to the opposite magnetic pole directions of the first permanent magnet 50 and the second permanent magnet 60, the second permanent magnet 60 attracts the conductive winding 40 while the first permanent magnet 50 repels the conductive winding 40, so that the brake lever 20 is driven to move by the combined action of the first permanent magnet 50 and the second permanent magnet 60, thereby automatically tripping. When the load control terminal 10 receives a closing signal from the system master station, a second current is input to the conductive winding 40, the direction of the second current is opposite to the direction of the first current, and due to the opposite magnetic pole directions of the first permanent magnet 50 and the second permanent magnet 60, the first permanent magnet 50 attracts the conductive winding 40, and the second permanent magnet 60 repels the conductive winding 40, so that the combined action of the first permanent magnet 50 and the second permanent magnet 60 drives the brake lever 20 to reset, and the automatic closing is realized.
In summary, when the low-voltage fixed-ratio charge control device provided by the embodiment needs to be tripped and switched on, the first permanent magnet 50 and the second permanent magnet 60 simultaneously apply acting force on the brake rod 20, so that the brake rod 20 can obtain enough driving power to generate corresponding actions, the lever 15 does not need to be driven by the shunt release 14 to trip, and an additional switching-on device does not need to be configured, and tripping and switching-on can be performed according to the electricity consumption charging condition.
Example 2
With reference to fig. 5, the present embodiment provides a low-voltage fixed-ratio cost control device, based on the structure and principle described in embodiment 1, the closing contact 30 includes a fixing ring 31, both ends of the conductive winding 40 are provided with limiting rings 41, and the outer diameter of the limiting ring 41 is greater than the inner diameter of the first permanent magnet 50; grooves 42 are formed in the sides, away from the conductive winding 40, of the two limiting rings 41, and the grooves 42 are used for containing viscous grease.
The movement range of the brake lever 20 is limited by the limiting ring 41, so that the brake lever 20 is prevented from contacting with other contacts in the tripping process to cause line misconnection, and meanwhile, the damage to the closing contact 30 and the closing wire column due to the overlarge travel in the closing process is avoided. When the permanent magnet synchronous motor is used, viscous grease is filled in the groove 42, so that the viscous grease is fully distributed on the side face of the whole limiting ring 41 with the groove 42, and further, when the limiting ring 41 is in contact with a corresponding permanent magnet, the damping characteristic of the viscous grease is utilized to play a role in buffering, the permanent magnet is prevented from being broken by the impact of the limiting ring 41, and the limiting ring 41 and the corresponding permanent magnet are bonded together by the viscosity of the viscous grease under the condition that the conductive winding 40 is not electrified, so that the stability of closing and tripping states is ensured.
The viscous grease filled in the grooves 42 adopts grease with relatively high viscosity, such as lubricating grease, damping grease and the like.
Example 3
With reference to fig. 6, the present embodiment provides a low-voltage fixed-ratio cost control device, based on the structure and principle described in embodiment 1 or 2, the closing contact 30 includes a fixed ring 31, and the fixed ring 31 is sleeved outside the ceramic segment 21; closing wings 32 are arranged on two sides of the fixing ring 31, the closing wings 32 extend along the length direction of the brake bar 20, and the length of the closing wings 32 is smaller than the movable stroke of the brake bar 20, so that sufficient contact stroke of the closing contact 30 and a closing string is ensured, and the stability of closing is ensured.
On this basis, the closing wing piece 32 is obliquely arranged in a direction away from the magnetizable section 22, and the closing wing piece 32 is a spring piece so as to press the closing wire column through the spring piece, thereby further ensuring the stability of closing.
Example 4
With reference to fig. 7, the present embodiment provides a low-voltage fixed-ratio cost control device, which is based on the structure and principle described in any one of embodiments 1 to 3, and further includes a box body, where the load control terminal 10, the brake lever 20, the first permanent magnet 50, and the second permanent magnet 60 are all installed in the box body; the box body is matched with a box door, a travel switch 70 is arranged on one side of the box door, the travel switch 70 is electrically connected with the load control terminal 10, and the load control terminal 10 can feed back a state signal of the travel switch 70 to the monitoring terminal.
Can carry out dustproof and waterproof protection to each component through the box, ensure the normal operating of expense accuse device, and adaptation travel switch 70 on box and chamber door can feed back monitor terminal with the switching state of chamber door in real time to and the discovery chamber door not closed and the condition of opening unusually in time, and then ensure the power consumption safety and avoid stealing electricity.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A low pressure fixed ratio cost control device, comprising:
the load control terminal (10) is used for receiving a control signal sent by a system main station;
the device comprises a brake rod (20), wherein one end of the brake rod (20) is provided with a closing contact (30), the other end of the brake rod (20) is provided with a conductive winding (40), and the conductive winding (40) is electrically connected with the load control terminal (10);
the first permanent magnets (50) are arranged at one end, opposite to the closing contact (30), of the conductive winding (40) at intervals, and the magnetic pole direction of the first permanent magnets (50) extends along the axial direction of the conductive winding (40);
the second permanent magnet (60) is arranged at one end, away from the closing contact (30), of the conductive winding (40) at intervals, and the magnetic pole direction of the second permanent magnet (60) extends along the axial direction of the conductive winding (40);
the load control terminal (10) can control the direction and the on-off of the current of the conductive winding (40) according to the control signal, and the magnetic pole directions of the first permanent magnet (50) and the second permanent magnet (60) are opposite.
2. The low-voltage fixed-ratio cost control device according to claim 1, wherein the control signals comprise a trip signal, a close signal and a hold signal;
the load control terminal (10) disconnects the current of the conductive winding (40) in a state where the load control terminal (10) receives a sustain signal.
3. The low-pressure fixed-ratio cost control device as claimed in claim 1, wherein the first permanent magnet (50) is of an annular structure, and the first permanent magnet (50) is sleeved outside the middle part of the brake lever (20) at intervals.
4. The low-voltage fixed-ratio cost control device according to claim 3, wherein both ends of the conductive winding (40) are provided with limiting rings (41), and the outer diameter of each limiting ring (41) is larger than the inner diameter of the first permanent magnet (50);
and grooves (42) are formed in one sides, far away from the conductive winding (40), of the two limiting rings (41), and the grooves (42) are used for containing viscous grease.
5. The low pressure fixed ratio cost control device of claim 4, wherein said groove (42) contains viscous grease therein.
6. The low-voltage fixed-ratio cost control device of claim 1, wherein the brake bar (20) comprises a ceramic section (21) and a magnetizable section (22) which are connected in sequence, and the conductive winding (40) is wound outside the magnetizable section (22).
7. The low pressure fixed ratio cost control device of claim 6, wherein said brake lever (20) is of hollow construction.
8. The low-voltage fixed-ratio cost control device according to claim 6, wherein the closing contact (30) comprises a fixed ring (31), the fixed ring (31) is sleeved outside the ceramic section (21);
closing wings (32) are arranged on two sides of the fixing ring (31), the closing wings (32) extend along the length direction of the brake rod (20), and the length of the closing wings (32) is smaller than the movable stroke of the brake rod (20).
9. The low voltage fixed ratio cost control device of claim 8, wherein the closing wing (32) is inclined away from the magnetizable section (22), and the closing wing (32) is a spring plate.
10. The low-voltage fixed-ratio cost control device according to any one of claims 1 to 9, further comprising a box body, wherein the load control terminal (10), the brake lever (20), the first permanent magnet (50) and the second permanent magnet (60) are all mounted in the box body;
the box body is matched with a box door, a travel switch (70) is arranged on one side of the box door, the travel switch (70) is electrically connected with the load control terminal (10), and the load control terminal (10) can feed back a state signal of the travel switch (70) to the monitoring terminal.
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| CN202210759405.8A CN114999867A (en) | 2022-06-30 | 2022-06-30 | Low-voltage fixed-ratio charge control device |
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| CN202210759405.8A CN114999867A (en) | 2022-06-30 | 2022-06-30 | Low-voltage fixed-ratio charge control device |
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| CN202210759405.8A Pending CN114999867A (en) | 2022-06-30 | 2022-06-30 | Low-voltage fixed-ratio charge control device |
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