CN114894087B - Electric power protection device - Google Patents
Electric power protection device Download PDFInfo
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- CN114894087B CN114894087B CN202210472462.8A CN202210472462A CN114894087B CN 114894087 B CN114894087 B CN 114894087B CN 202210472462 A CN202210472462 A CN 202210472462A CN 114894087 B CN114894087 B CN 114894087B
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- light source
- connecting sheet
- pressing plate
- photodetector
- light
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- 238000001514 detection method Methods 0.000 claims abstract description 32
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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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
- H01H71/04—Means for indicating condition of the switching device
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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
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The embodiment of the invention discloses a power protection device. The power protection device comprises an outlet pressing plate and a position detection unit; the outlet pressing plate comprises a fixed component and a switching movable component which are movably connected, and the switching movable component comprises a connecting sheet; the position detection unit comprises at least one optical detection component, and the optical detection component is used for determining the position of the connecting sheet; wherein the positions include a plunge position and an exit position. By adding the optical detection component on the outlet pressing plate, the switching state of the outlet pressing plate is detected and the pressing plate fault is found in time under the condition that the original circuit loop is not affected, and operation and maintenance personnel are reminded to maintain.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a power protection device.
Background
The automatic protection device is widely applied to power grid lines and plays an important role in healthy operation of the lines. When the circuit is operated, the pressing plate of the protection device is frequently required to be operated in a throwing and retreating mode, if the pressing plate is temporarily thrown into or retreated from, the pressing plate is not recovered in time, or the knob is not screwed after the pressing plate is recovered, a protection signal cannot be exported to the coil, the action of the protection device is affected, and the circuit cannot isolate faults when the faults occur.
The circuit of the outlet pressing plate is connected with the opening and closing coil of the circuit breaker, if the method of detecting the opening and closing of the pressing plate by using voltage and current is used, the way of triggering the opening and closing coil is necessary, and misoperation of the circuit breaker is necessarily caused, so that the current electric power protection device does not realize detection on whether the outlet pressing plate is in place or not, and a novel electric power protection device is provided.
Disclosure of Invention
The embodiment of the invention provides an electric power protection device which can detect the switching state of an outlet pressing plate under the condition that an original circuit loop is not affected.
The embodiment of the invention provides a power protection device, which comprises:
the device comprises at least one outlet pressing plate, wherein the outlet pressing plate comprises a fixed component and a switching movable component which are movably connected, and the switching movable component comprises a connecting sheet; the position detection unit comprises at least one optical detection component, and the optical detection component is used for determining the position of the connecting sheet;
wherein the positions include a plunge position and an exit position.
Optionally, the power protection device further includes a controller, where the controller is electrically connected to the position detection component, and the controller is configured to compare whether the current position of the connecting piece determined by the position detection unit is consistent with a preset position;
if not, outputting alarm information.
Optionally, the fixing component includes a pressing plate base and a connection terminal located at a first end of the pressing plate base;
when the connecting sheet is positioned at the input position, the connecting sheet is parallel to the pressing plate base, and the first end of the connecting sheet is electrically connected with the connecting terminal;
when the connecting piece is located at the withdrawal position, the connecting piece and the pressing plate base form a first included angle which is different from zero, and the first end of the connecting piece is disconnected with the connecting terminal.
Optionally, the optical detection assembly includes at least one light source and a photodetector;
the light source is arranged on one side of the pressing plate base, which is close to the connecting sheet, and the light emergent surface of the light source faces the connecting sheet;
the photoelectric detector is provided with one side of the connecting sheet far away from the pressing plate base, and the light sensitive surface of the photoelectric detector faces the connecting sheet.
Optionally, the light source and the photodetector are located in the projection when the connection piece is located at the input position, when the photodetector receives the light signal emitted by the light source, the connection piece is located at the exit position, and when the photodetector does not receive the light signal emitted by the light source, the connection piece is located at the input position; or the light source and the photoelectric detector are positioned in the projection when the connecting piece is positioned at the exit position, when the photoelectric detector receives the light signal emitted by the light source, the connecting piece is positioned at the input position, and when the photoelectric detector does not receive the light signal emitted by the light source, the connecting piece is positioned at the exit position.
Optionally, the optical detection component includes a light source and a photoelectric detector disposed on one side of the platen base near the connecting piece, where a light emitting surface of the light source and a light sensing surface of the photoelectric detector face the connecting piece;
and the photoelectric detector determines the position of the connecting sheet according to the received optical signal reflected by the connecting sheet.
Optionally, the light source includes a first light source and at least one second light source, and the photodetector includes a first photodetector and a second photodetector;
the first light source and the first photoelectric detector are positioned in the projection when the connecting sheet is positioned at the input position, and the second light source and the second photoelectric detector are positioned in the projection when the connecting sheet is positioned at the exit position;
when the first photoelectric detector receives the light signal of the first light source reflected by the connecting sheet, the connecting sheet is positioned at the input position, and when the second photoelectric detector receives the light signal of the second light source reflected by the connecting sheet, the connecting sheet is positioned at the exit position.
Optionally, the light source comprises an infrared light source or an ultraviolet light source.
Optionally, a second end of the connecting piece is provided with a sleeve joint hole, a second end of the pressing plate base is provided with a connecting column, the connecting piece is movably sleeved on the connecting column through the sleeve joint hole and can rotate around the connecting column, the end part of the connecting column is provided with a first nut, and the end part of the connecting terminal is provided with a second nut;
at least one of the connection post and the connection terminal is provided with a pressure sensor for detecting whether the first nut and/or the second nut is screwed or not based on the measured pressure.
Optionally, an insulating gasket is disposed between the connecting piece and the pressure sensor.
Optionally, the power protection device further comprises a controller, wherein the controller is electrically connected with the pressure sensor, and the controller is used for comparing whether the measured pressure of the pressure sensor is smaller than a preset threshold value;
if yes, outputting alarm information.
According to the technical scheme provided by the embodiment of the invention, the position of the connecting sheet is determined by the optical detection component in the position detection unit, so that the switching state of the outlet pressing plate is detected and the pressing plate fault is found timely under the condition that an original circuit loop is not influenced, and the operation and maintenance personnel are reminded of maintenance.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other 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 a frame structure of an electric power protection device according to an embodiment of the present invention;
FIG. 2 is a schematic side view of an outlet platen according to an embodiment of the present invention in a throw-in state;
FIG. 3 is a schematic top view of an outlet platen according to an embodiment of the present invention in an input state;
FIG. 4 is a schematic side view of an exit platen according to an embodiment of the present invention in an exit state;
FIG. 5 is a schematic top view of an exit platen according to an embodiment of the present invention in an exit state;
FIG. 6 is a schematic side view of another embodiment of the present invention showing an outlet platen in an input state;
FIG. 7 is a schematic top view of another embodiment of the present invention with an outlet platen in an input state;
FIG. 8 is a schematic side view of an exit platen according to an embodiment of the present invention in an exit state;
FIG. 9 is a schematic top view of another exit platen according to an embodiment of the present invention in an exit state;
fig. 10 is a schematic diagram of a part of a power protection device according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic diagram of a frame structure of an electric power protection device according to an embodiment of the present invention, fig. 2 is a schematic diagram of a side view structure of an outlet pressing plate in a throw-in state according to an embodiment of the present invention,
FIG. 3 is a schematic top view of an outlet platen according to an embodiment of the present invention in an input state;
FIG. 4 is a schematic side view of an exit platen according to an embodiment of the present invention in an exit state;
fig. 5 is a schematic top view of an exit platen according to an embodiment of the present invention in an exit state. Referring to fig. 1 to 5 in combination, the power protection device includes: at least one outlet pressing plate 1, wherein the outlet pressing plate 1 comprises a fixed component 11 and a switching movable component 12 which are movably connected, and the switching movable component 12 comprises a connecting sheet 121; a position detecting unit 2, the position detecting unit 2 including at least one optical detecting component for determining the position of the connecting piece 121; the positions of the connecting pieces 121 include a throw-in position and a withdraw position.
The position of the connecting piece 121 will change correspondingly when the outlet pressing plate 1 is in the input state and the connecting piece 121 is in the position connected with the fixing component 11 when the outlet pressing plate 1 is in the output state, and the connecting piece 121 is in the position disconnected with the fixing component 11 when the outlet pressing plate 1 is in the output state. The position detecting unit 2 comprises an optical detecting component, the optical detecting component can send and receive optical signals, when the connecting sheet is in different positions of the input and the exit, the optical signals sent and received by the optical detecting component are different, and the position of the connecting sheet can be determined by judging the corresponding optical signals.
Optionally, the power protection device provided by the embodiment of the invention may further include a controller 3, an operator may set, on the controller 3, position information of the connecting sheet 121 when the outlet pressing plate 1 is in a correct throwing and retreating state, the controller 3 is electrically connected with the position detection unit 2, and may convert an optical signal of an optical detection component in the position detection unit 2 into an electrical signal and transmit the electrical signal to the controller 3, so that current position information of the connecting sheet may be collected and compared with the set position information when the outlet pressing plate 1 is in a correct throwing and retreating state, and if the state of the outlet pressing plate 1 does not match with a preset state, the controller 3 triggers an alarm signal to remind the operator to overhaul in time.
In practical applications, since the power protection device includes a plurality of outlet platens 1 (outlet platen #1 to outlet platen #n), the position detection unit 2 of the plurality of outlet platens 1 (outlet platen #1 to outlet platen #n) often uses a common controller 3 to reduce the cost, as shown in fig. 1.
According to the technical scheme provided by the embodiment of the invention, the position of the connecting sheet is determined by the optical detection component in the position detection unit, so that the switching state of the outlet pressing plate is detected and the pressing plate fault is found timely under the condition that an original circuit loop is not influenced, operation and maintenance personnel are reminded to maintain, and the operation stability of the power system is provided.
Specifically, in one embodiment, the fixing assembly 11 of the outlet platen includes a platen base 111 and a connection terminal 112 located at a first end of the platen base 111, when the connection piece 121 is located at the input position, the connection piece 121 is parallel to the platen base 111, and the first end of the connection piece 121 is electrically connected to the connection terminal 112, as shown in fig. 2 and 3. When the connecting piece 121 is located at the withdrawal position, the connecting piece 121 forms a first included angle with the platen base 111, and the first end of the connecting piece 121 is disconnected from the connecting terminal 112, as shown in fig. 4 and 5.
Through the structure, the embodiment can ensure the stable and reliable electric connection of the input state between the fixed component 11 and the switching movable component 12 of the outlet pressing plate 1; when the connecting piece 121 is at the withdrawal position, the connecting piece 121 is disconnected from the connecting terminal 112 at the first end, and the positional relationship between the connecting piece 121 and the platen base 111 forms an included angle which is different from zero.
Optionally, with continued reference to fig. 2 or fig. 4, the optical detection assembly includes a light source 21 and a photodetector 22, where the light source 21 is disposed on a side of the platen base 111 near the connection piece 121, and a light emitting surface of the light source 21 faces the connection piece 121; the photodetector 22 is disposed on a side of the connecting piece 121 away from the platen base 111, and a light sensing surface of the photodetector 22 faces the connecting piece 121.
Optionally, the light source and the photodetector are located in the projection when the connecting piece is located at the input position, when the photodetector receives the light signal emitted by the light source, the connecting piece is located at the exit position, and when the photodetector does not receive the light signal emitted by the light source, the connecting piece is located at the input position; or the light source and the photoelectric detector are positioned in the projection when the connecting sheet is positioned at the withdrawal position, when the photoelectric detector receives the light signal emitted by the light source, the connecting sheet is positioned at the input position, and when the photoelectric detector does not receive the light signal emitted by the light source, the connecting sheet is positioned at the withdrawal position.
In the embodiments of fig. 2 and fig. 3, the light source 21 and the photodetector 22 are both located in the projection of the input position of the connection piece 121, in this case, when the connection piece 121 is located in the input position, the connection piece 121 will block the light emitted by the light source 21, and at this time, the photodetector 22 cannot receive the light emitted by the light source 21; when the connecting piece 121 is at the withdrawal position, the connecting piece 121 does not shade the light emitted by the light source 21, at this time, the photodetector 22 can receive the light emitted by the light source 21, and according to whether the photodetector 22 can receive the light emitted by the light source 21, the connection piece 121 can be determined to be at the withdrawal position or the withdrawal position.
In another embodiment, as shown in fig. 4 and fig. 5, the light source 21 and the photodetector 22 may also be both located in the projection of the connection piece 121 in the exit position, where, contrary to the embodiment of fig. 2 and fig. 3, when the connection piece 121 is in the input position, the photodetector 22 can receive the light emitted by the light source 21, and when the connection piece 121 is in the exit position, the photodetector 22 cannot receive the light emitted by the light source 21, and at this time, whether the connection piece 121 is in the input position or the exit position may also be determined according to whether the photodetector 22 can receive the light emitted by the light source 21.
In this embodiment, by the above arrangement, the connection piece 121 can be determined to be in the input or exit position according to whether the photodetector 22 receives the light signal emitted from the light source 21.
It should be noted that, when the connecting piece 121 is at the withdrawal position, an included angle between the connecting piece 121 and the platen base 111 that is not zero has a larger range, so in practical application, multiple groups of light sources 21 and photodetectors 22 may be disposed in the projection at the withdrawal position (only one group is shown in fig. 4 and 5 for illustration due to limited space), and each group of light sources 21 and photodetectors 22 is disposed at positions corresponding to two sides of the projection at the current withdrawal position of the connecting piece 121, so as to determine the positions of the connecting piece 121 at different withdrawal positions by the corresponding light sources 21 and photodetectors 22. It should be noted that the drawings are only schematic, and it should be noted that, in practical application, no matter what angle the connecting piece 121 is at, the plane of the connecting piece 121 is always parallel to the plane of the pressing plate base 111, and in the arrangement of the light source 21 and the photodetector 22 in the same group, the positions of the light source 21 and the photodetector 22 are always fixed and not changed with the position of the connecting piece 121.
In the power protection device provided by the invention, the optical detection assembly can also adopt another arrangement mode. Optionally, the optical detection assembly includes a light source and a photoelectric detector disposed on one side of the platen base near the connecting piece, where the light emitting surface of the light source and the light sensing surface of the photoelectric detector face towards the connecting piece; the photoelectric detector determines the position of the connecting sheet according to the received optical signal reflected by the connecting sheet.
Fig. 6 is a schematic side view of another embodiment of the present invention, and fig. 7 is a schematic top view of another embodiment of the present invention. Referring to fig. 6 and 7, the optical detection assembly includes a light source 21 and a photodetector 22 that are disposed on a side of the platen base 111 near the connection piece 121, and a light emitting surface of the light source 21 and a light receiving surface of the photodetector 22 face the connection piece 121, and a bottom of the connection piece 121 is of a bright metal structure and can reflect light, in this embodiment, the light source 21 and the photodetector 22 are both located in a projection of a throwing position of the connection piece 121, when the connection piece 121 is located at the throwing position, the connection piece can transmit light emitted from the light source 21 to the connection piece 121 and then reflect the light to the photodetector 22 by the connection piece 121, when the connection piece 121 is located at the withdrawing position, the light emitted from the light source 21 cannot reflect to the photodetector 22 through the connection piece 121, and the photodetector 22 can determine whether the connection piece 121 is located at the throwing or withdrawing position according to whether a light signal reflected by the connection piece 121 is received.
In another embodiment, optionally, the light source comprises a first light source and at least one second light source, and the photodetector comprises a first photodetector and a second photodetector; the first light source and the first photoelectric detector are positioned in the projection when the connecting sheet is positioned at the input position, and the second light source and the second photoelectric detector are positioned in the projection when the connecting sheet is positioned at the exit position; when the first photoelectric detector receives the optical signal of the first light source reflected by the connecting sheet, the connecting sheet is positioned at the input position, and when the second photoelectric detector receives the optical signal of the second light source reflected by the connecting sheet, the connecting sheet is positioned at the exit position.
Fig. 8 is a schematic side view of an exit platen according to an embodiment of the present invention in an exit state, and fig. 9 is a schematic top view of an exit platen according to an embodiment of the present invention in an exit state. Referring to fig. 8 and 9, taking an example in which the light source includes a second light source, the light source includes a first light source 211 and a second light source 212, and the photo detector includes a first photo detector 221 and a second photo detector 222; the first light source 211 and the first photodetector 221 are located in the projection of the connection piece 121 when in the input position, and the second light source 212 and the second photodetector 222 are located in the projection of the connection piece 121 when in the exit position; when the first photodetector 221 receives the light signal of the first light source 211 reflected by the connection piece 121, it indicates that the light signal emitted by the first light source 211 is blocked by the connection piece 121 and reflected into the first photodetector 221, at this time, the connection piece 121 is in socket positioning contact with the connection terminal 112 at the first end, the connection piece 121 is parallel to the platen base 111, i.e. the connection piece 121 is in the input position, when the second photodetector 222 receives the light signal of the second light source 212 reflected by the connection piece 121, it indicates that the light signal emitted by the second light source 212 is blocked by the connection piece 121 and reflected into the second photodetector 222, at this time, the connection terminal 112 at the connection piece 121 and the first end is disconnected, and the positional relationship between the connection piece 121 and the platen base 111 forms an included angle which is not zero, i.e. the connection piece 121 is in the exit position.
Similarly, when the connecting piece 121 is at the withdrawal position, an included angle between the connecting piece 121 and the platen base 111, which is not zero, has a larger range, so in practical application, multiple groups of second light sources 212 and second photodetectors 222 (only one group is shown in fig. 8 and 9 for illustration due to limited space) can be disposed in the withdrawal position projection, and each group of second light sources 212 and second photodetectors 222 is at a position corresponding to the position below the projection of the withdrawal position where the connecting piece 121 is currently located, so as to realize that the corresponding second light sources 212 and second photodetectors 222 determine the positions of the connecting piece 121 at different withdrawal positions. Similarly, the drawings are only schematic, and it should be noted that, in practical application, no matter what angle the connecting piece 121 is at, the plane of the connecting piece 121 is always parallel to the plane of the pressing plate base 111, and in the arrangement of the same group of the second light source 212 and the second photodetector 222, the positions of the second light source 212 and the second photodetector 222 are always fixed and not changed with the change of the position of the connecting piece 121.
In the above embodiment, the light source 21 is usually an infrared light source or an ultraviolet light source, and in practical application, the power protection device is usually disposed in the protection cabinet, when the protection cabinet is opened, a large amount of external visible light enters, if the visible light is used as the light source, the light signal received by the photodetector is easy to form larger interference, and whether the received light signal is derived from the used light source or the light in the environment cannot be correctly distinguished.
Illustratively, the second end of the connecting piece 121 is provided with a socket hole 1211, the second end of the pressing plate base 111 is provided with a connecting post 1111, the connecting piece 121 is movably sleeved on the connecting post 1111 through the socket hole 1211 and can rotate around the connecting post 1111, the end of the connecting post 1111 is provided with a first nut 1112, and the end of the connecting terminal 112 is provided with a second nut 1121;
the protection device is characterized in that the protection device needs to be recovered in time after the protection device is temporarily put into or withdrawn from the outlet pressing plate, the nut needs to be screwed down after the protection device is recovered, if the nut is not screwed down, the protection signal cannot be discharged to the coil, the action of the protection device is affected, and the circuit cannot isolate faults when the faults occur.
Further, on the basis of the above-mentioned embodiments, fig. 10 is a schematic view of a part of the structure of a power protection device according to an embodiment of the present invention, in which a pressure sensor 4 is added between a connection column 1111 and a connection piece 121 and/or between a connection terminal 112 and the connection piece 121, for detecting a pressure value between the connection column 1111 and the connection piece 121 and/or between the connection terminal 112 and the connection piece 121, the pressure values detected by the pressure sensor 4 are different when the nuts are screwed and not screwed, and whether the first nut 1112 and/or the second nut 1121 are screwed can be detected according to the detected pressure values.
Optionally, the power protection device provided by the embodiment of the invention further includes a controller 5, the controller 5 is electrically connected with the pressure sensor 4, and is used for converting a digital signal in the pressure sensor 4 into an electrical signal and transmitting the electrical signal to the controller 5, a pressure threshold value is preset in the controller 5, and compared with a pressure value measured by the pressure sensor 4, if the pressure value measured by the pressure sensor 4 is greater than the pressure threshold value preset in the controller 5, the nut is indicated to be screwed; if the pressure value measured by the pressure sensor 4 is smaller than the preset pressure threshold value in the controller 5, the screw cap is indicated to be not screwed down, and the controller 5 triggers an alarm signal to remind operation and maintenance personnel. In particular, the controller 5 in this embodiment and the controller 3 in the above embodiment may be integrated into the same controller.
Optionally, an insulating gasket 6 is arranged between the connecting sheet 121 and the pressure sensor 4, and is used for insulating a loop between the connecting sheet 121 and the pressure sensor 4, so that the pressure sensor 4 is prevented from affecting an original circuit, and whether a nut is screwed down or not is monitored under the condition that the circuit where the original pressing plate is located is not affected.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (6)
1. A power protection device, comprising:
the device comprises at least one outlet pressing plate, wherein the outlet pressing plate comprises a fixed component and a switching movable component which are movably connected, and the switching movable component comprises a connecting sheet;
the position detection unit comprises at least one optical detection component, and the optical detection component is used for determining the position of the connecting sheet;
wherein the positions include a plunge position and an exit position;
the electric power protection device further comprises a controller, wherein the controller is electrically connected with the position detection unit and is used for comparing whether the current position of the connecting sheet determined by the position detection unit is consistent with a preset position or not;
if not, outputting alarm information;
the fixing component comprises a pressing plate base and a connecting terminal positioned at the first end of the pressing plate base;
when the connecting sheet is positioned at the input position, the connecting sheet is parallel to the pressing plate base, and the first end of the connecting sheet is electrically connected with the connecting terminal;
when the connecting piece is positioned at the withdrawal position, a first included angle which is different from zero is formed between the connecting piece and the pressing plate base, and the first end of the connecting piece is disconnected with the connecting terminal;
the second end of the connecting piece is provided with a sleeve joint hole, the second end of the pressing plate base is provided with a connecting column, the connecting piece is movably sleeved on the connecting column through the sleeve joint hole and rotates around the connecting column, the end part of the connecting column is provided with a first nut, and the end part of the connecting terminal is provided with a second nut;
at least one of the connection post and the connection terminal is provided with a pressure sensor for detecting whether the first nut and/or the second nut is screwed or not according to the measured pressure;
an insulating gasket is arranged between the connecting sheet and the pressure sensor;
the controller is electrically connected with the pressure sensor and is used for comparing whether the measured pressure of the pressure sensor is smaller than a preset threshold value or not;
if yes, outputting alarm information.
2. The power protection device of claim 1, wherein the optical detection assembly comprises at least one light source and a photodetector;
the light source is arranged on one side of the pressing plate base, which is close to the connecting sheet, and the light emergent surface of the light source faces the connecting sheet;
the photoelectric detector is provided with one side of the connecting sheet far away from the pressing plate base, and
the light sensitive surface of the photoelectric detector faces the connecting sheet.
3. The power protection device of claim 2, wherein the light source and the photodetector are positioned in a projection of the connection pad in the input position, the connection pad is in the exit position when the photodetector receives the light signal emitted from the light source, and the connection pad is in the input position when the photodetector does not receive the light signal emitted from the light source; or,
the light source and the photoelectric detector are located in the projection when the connecting piece is located at the withdrawal position, when the photoelectric detector receives the light signal emitted by the light source, the connecting piece is located at the input position, and when the photoelectric detector does not receive the light signal emitted by the light source, the connecting piece is located at the withdrawal position.
4. The power protection device according to claim 1, wherein the optical detection assembly comprises a light source and a photodetector arranged on one side of the platen base close to the connecting piece, and a light emitting surface of the light source and a light sensing surface of the photodetector face the connecting piece;
and the photoelectric detector determines the position of the connecting sheet according to the received optical signal reflected by the connecting sheet.
5. The power protection device of claim 4, wherein the light source comprises a first light source and at least one second light source, and the photodetector comprises a first photodetector and a second photodetector;
the first light source and the first photoelectric detector are positioned in the projection when the connecting sheet is positioned at the input position, and the second light source and the second photoelectric detector are positioned in the projection when the connecting sheet is positioned at the exit position;
when the first photoelectric detector receives the light signal of the first light source reflected by the connecting sheet, the connecting sheet is positioned at the input position, and when the second photoelectric detector receives the light signal of the second light source reflected by the connecting sheet, the connecting sheet is positioned at the exit position.
6. A power protection device according to any one of claims 2 to 5, wherein the light source comprises an infrared light source or an ultraviolet light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210472462.8A CN114894087B (en) | 2022-04-29 | 2022-04-29 | Electric power protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210472462.8A CN114894087B (en) | 2022-04-29 | 2022-04-29 | Electric power protection device |
Publications (2)
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| CN114894087A (en) | 2022-08-12 |
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