CN213398835U - Device for monitoring in-place closing of circuit breaker - Google Patents
Device for monitoring in-place closing of circuit breaker Download PDFInfo
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- CN213398835U CN213398835U CN202022277486.7U CN202022277486U CN213398835U CN 213398835 U CN213398835 U CN 213398835U CN 202022277486 U CN202022277486 U CN 202022277486U CN 213398835 U CN213398835 U CN 213398835U
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Abstract
The utility model discloses a device for monitoring the in-place closing of a breaker, which comprises a detected element, a mechanism bracket, a mounting plate and a position sensor; the detected element is fixed on the transmission shaft of the circuit breaker along the radial direction; the mechanism bracket is sleeved on the transmission shaft of the circuit breaker; the mounting plate is parallel to the axis of the transmission shaft of the circuit breaker and is fixed on the mechanism bracket; position sensors are respectively arranged on the mounting plate corresponding to the switching-on position and the just-on position of the detected element; the position sensor is used for detecting the position of the detected element; the detected element comprises a detection head and a fixing ring, the fixing ring is nested on the transmission shaft of the circuit breaker, and the detection head extends outwards along the radial direction; a plurality of position sensors are respectively arranged at the switching-on position and the just-switching-on position of the detected element; the output end of the position sensor corresponding to the switching-on position is connected with the switching-on and circuit, the output end of the position sensor corresponding to the just-on position is connected with the just-on and circuit, and the output ends of the switching-on and circuit and the just-on and circuit are connected with the judgment and circuit.
Description
Technical Field
The utility model relates to a high tension switchgear technical field specifically is device that monitoring circuit breaker combined floodgate targets in place.
Background
Statistical analysis of high-voltage switch accidents by domestic and foreign electric power departments shows that most of faults of the high-voltage circuit breaker occur in the mechanical aspect. Therefore, in an intelligent substation, an online monitoring system capable of recording mechanical characteristic data of the circuit breaker in real time is needed. However, the primary main loop of the circuit breaker carries high voltage and large current in the process of network hanging operation, and the state change moment of the fracture needs to be indirectly judged through other measurement parameters.
Meanwhile, when the circuit breaker is normally switched on, the arc contact is firstly contacted, the main contact is then switched on, and the main contact bears long-term load current. If the circuit breaker is not closed in place, the main contacts are not reliably contacted, the arc contacts generate heat more than the normal situation because the loop resistance contacted by the arc contacts is larger than the resistance when the normal main contacts participate in the conduction, and the arc contacts have no long-time current conduction capability because the structure and the material of the arc contacts mainly have short-time heat resistance. Other problems arise due to the occurrence of local overheating conditions as described above. Therefore, it is necessary to determine whether the breaker is in place.
In order to identify the mechanical fault of the circuit breaker, there are methods for monitoring the mechanical characteristic of the circuit breaker by image recognition, mechanical vibration signal, current signal, digital sensor, etc., but these methods have the following problems: firstly, when the mechanical characteristics of the circuit breaker are monitored by adopting an image identification method, geometric figure modeling, figure edge detection and figure matching calculation methods are complex and are not easy to install; secondly, when the mechanical characteristics of the circuit breaker are monitored by adopting a mechanical vibration signal method, the vibration signal is influenced by factors such as the structure of the circuit breaker and various environmental noises, and the vibration signal contains larger noises which are difficult to filter, so that the monitoring result is wrong, the equipment is expensive, and the calculation method is complex; thirdly, when the mechanical characteristics of the circuit breaker are monitored by adopting a current signal, the relative time of occurrence of an event is extracted, and the fault symptom is judged according to a time interval, so that the fault diagnosis is effective for diagnosing the fault of the action rejection and the fault misoperation, and whether the circuit breaker is in place or not can not be reliably judged; fourthly, when the mechanical characteristics of the circuit breaker are monitored by adopting the digital quantity sensor, IED monitoring equipment needs to be equipped, and the cost is high.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a device that monitoring circuit breaker combined floodgate targets in place, simple structure, convenient operation, it is with low costs, can effectively judge whether the circuit breaker combined floodgate targets in place.
The utility model discloses a realize through following technical scheme:
the device for monitoring the in-place closing of the circuit breaker comprises a detected element, a mechanism bracket, a mounting plate and a position sensor;
the detected element is fixed on the transmission shaft of the circuit breaker along the radial direction;
the mechanism bracket is sleeved on a transmission shaft of the circuit breaker;
the mounting plate is parallel to the axis of the transmission shaft of the circuit breaker and is fixed on the mechanism bracket; position sensors are respectively arranged on the mounting plate corresponding to the switching-on position and the just-on position of the detected element;
the position sensor is used for detecting the position of the detected element.
Furthermore, the detected element comprises a detection head and a fixing ring, the fixing ring is nested on the transmission shaft of the circuit breaker, and the detection head extends outwards along the radial direction.
Furthermore, a transverse kidney hole is formed in an end plate at one end of the mechanism support; the mounting plate is arranged in an L shape, a waist hole of the mounting plate is arranged on the short plate, and the sensor is fixed on the long plate; the directions of the transverse kidney holes and the mounting plate kidney holes are vertical to each other.
Furthermore, a plurality of position sensors are respectively arranged at the closing position and the just closing position corresponding to the detected element; the output end of the position sensor corresponding to the switching-on position is connected with the switching-on and circuit, the output end of the position sensor corresponding to the just-on position is connected with the just-on and circuit, and the output ends of the switching-on and circuit and the just-on and circuit are connected with the judgment and circuit.
Furthermore, the output end of the position sensor is connected with the collector, and the power end of the position sensor is connected with the power supply.
Furthermore, the position sensor adopts a proximity switch; at the corresponding switch-on position and the just-closed position, the detected element is made of metal, and the metal surface of the detected element is positioned in the effective detection range of the induction surface of the proximity switch.
Furthermore, the position sensor adopts a diffusion reflection type photoelectric sensor; the light projecting part and the light receiving part of the diffusion reflection type photoelectric sensor are arranged in the groove-shaped detection opening; and at the corresponding switch-on position and the just-on position, the detected element is positioned in the effective detection range of the detection port.
Furthermore, the position sensor adopts a travel switch, and a swing rod contact of the travel switch is arranged in contact with the detected element.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a corresponding the mode that sets up position sensor in the closing position that is detected the metal and just closing the position, measure the position that is detected the metal fixed with the circuit breaker transmission shaft, can realize whether the accurate judgement that the circuit breaker closed a floodgate and target in place, simple to operate can not receive the influence of other factors such as vibration, noise, can directly reflect contact closing position relatively.
Further, the utility model discloses when installing the mounting panel on mechanism's support, the bolt can pass the horizontal waist hole of mechanism's support, realizes that the horizontal Y direction of position sensor is adjusted, and two horizontal waist holes of mounting panel on the mounting panel can realize that the horizontal X direction of position sensor is adjusted.
Furthermore, a plurality of position sensors correspondingly arranged at the switching-on position and the just-switching-on position can accurately judge the positions, improve the reliability of detection, and can output switching-on signals when the two positions are in place.
Further, the utility model discloses well position sensor adopts proximity switch, realizes the position judgement of non-contact through using contactless proximity switch, realizes the measurement of non-contact circuit breaker contact position, can realize the judgement that whether the circuit breaker closed a floodgate and target in place, simple to operate, more directly reflects contact switching-on position.
Furthermore, the adoption of the diffusion reflection type sensor avoids the requirement of the common correlation type photoelectric sensor on the consistent installation of the superposition of the optical axes of the light projection part and the light receiving part. A diffuse reflection type sensor includes a light projecting portion and a light receiving portion, and is simple in structure and easy to install.
Further, the utility model discloses well position sensor adopts travel switch, through the pendulum rod with be detected the metal contact, with the power transmission when circuit breaker transmission part moves inside to travel switch. Extremely high mechanical repeatability accuracy can be achieved.
Drawings
Fig. 1 is the utility model discloses well circuit breaker switching on position structure schematic diagram.
Fig. 2 is the structure schematic diagram of the middle position of the breaker.
Fig. 3 is a front view of the transmission shaft of the present invention.
Fig. 4 is a sectional view of the transmission shaft of the present invention.
Fig. 5 is a schematic view of the mechanism bracket structure of the present invention.
Fig. 6a is a front view of the mounting plate structure of the present invention.
Fig. 6b is a front view of the mounting plate structure of the present invention.
Fig. 6c is a front view of the mounting plate structure of the present invention.
Fig. 7 is a schematic view illustrating mounting of a diffusion reflection type photosensor according to the present invention.
Fig. 8 is a schematic view of the travel switch of the present invention.
Fig. 9 is the utility model discloses the principle sketch that the monitoring circuit breaker combined floodgate targets in place.
In the figure: the device comprises a circuit breaker transmission shaft 1, an annular groove 11, a detected element 2, a mechanism bracket 3, a transverse kidney hole 31, a mounting plate 4, a mounting plate kidney hole 41, a proximity switch mounting hole 42, a just-closed position proximity switch 5, a closing position proximity switch 6, a power supply 7, a collector 8, a just-closed position sensing surface 51, a closing position sensing surface 61, a diffusion reflection type photoelectric sensor 9 and a travel switch 10.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The utility model discloses monitoring circuit breaker combined floodgate device that targets in place is a device that whether is used for detecting circuit breaker explosion chamber main contact to close a floodgate and targets in place, and it carries out the measurement that the circuit breaker closed a floodgate targets in place with position sensor, realizes the measurement of circuit breaker contact position, can realize the judgement that whether the circuit breaker closed a floodgate and targets in place.
The utility model discloses a device for monitoring the in-place closing of a circuit breaker, which comprises a detected element 2, a mechanism bracket 3, a mounting plate 4 and a position sensor, wherein as shown in figures 1 and 2, a circuit breaker transmission shaft 1 passes through the mechanism bracket 3, and the mounting plate 4 is fixed on the mechanism bracket 3 in parallel with the axis of the circuit breaker transmission shaft 1; position sensors are respectively arranged on the mounting plate 4 corresponding to the switching-on position and the just-switching-on position of the detected element 2; the detected element 2 comprises a detection head and a fixing ring, the fixing ring is nested on the transmission shaft 1 of the circuit breaker, and the detection head extends outwards along the radial direction; correspondingly, as shown in fig. 3 and 4, the transmission shaft 1 of the circuit breaker is provided with a circular groove 11 for positioning the detected element 2 in the Z-direction axially, so as to reduce the vibration of the detected element 2 in the transmission process of the circuit breaker and improve the stability of detection.
The utility model discloses monitoring circuit breaker combined floodgate device that targets in place when using, signal transmission is as follows:
during closing operation, the collector 8 connected with the proximity switch 5 at the closing position detects a pulse signal and judges that the breaker performs closing movement.
In the process of continuing to close the circuit breaker, as shown in fig. 9, when the collector 8 detects that the logic signal of the approach switch 5 at the just-closed position is 0 and the logic signal of the approach switch 6 at the closed position is 1, the logic signals are jointly input into the judgment and circuit, and then the main contact of the circuit breaker is judged to move to the closed position.
When a plurality of position sensors are respectively arranged corresponding to the switching-on position and the just-on position of the detected element 2; the output end of the position sensor corresponding to the switching-on position is connected with a switching-on and circuit, and the output logic signals of the positions of the proximity switches 6 at the switching-on positions are detected through the switching-on and circuit;
the output end of the position sensor corresponding to the just closing position is connected with the just closing circuit, and the positions of the plurality of just closing position proximity switches 5 are detected through the output logic signals of the just closing circuit;
the output ends of the closing and just closing circuit and the judgment and circuit are connected to judge the final position.
Example 1
In the preferred embodiment, the position sensor adopts a proximity switch; the detected element 2 is made of metal to form detected metal, and a closing position proximity switch 6 and a closing position proximity switch 5 are respectively arranged at the positions corresponding to the detected metal at the closing position and the closing position; the proximity switches are connected with a power supply 7 and a collector 8 respectively and used for collecting signals of the proximity switches.
As shown in fig. 1 and 2, when the distance between the detected metal and the closing sensing surface 61 of the closing position proximity switch 6 is smaller than the sensing distance of the closing position proximity switch 6, and the detected metal approaches the closing sensing surface 61 of the closing position proximity switch 6, the signal of the closing position proximity switch 6 is triggered to be converted into normally closed, so as to determine whether the circuit breaker is closed in place. Similarly, when the distance between the detected metal and the just-closed induction surface 51 of the just-closed position proximity switch 5 is smaller than the induction distance of the just-closed position proximity switch 5, and the detected metal approaches the just-closed induction surface 51 of the just-closed position proximity switch 5, the signal conversion of the just-closed position proximity switch 5 is triggered, and the signal is converted into normal close to judge whether the breaker is just closed in place.
In order to adapt to different breaker switches and accurately judge the closing of the breaker, the relative positions of the closing position proximity switch 5 and the closing position proximity switch 6 and the detected metal can be adjusted in three dimensions.
As shown in fig. 5, a transverse kidney hole 31 is formed in an end plate at one end of the mechanism bracket 3, as shown in fig. 6b, the mounting plate 4 is arranged in an L shape, as shown in fig. 6c, a mounting plate kidney hole 41 is formed in a short plate, and a sensor is fixed to a long plate; the transverse kidney holes 31 and the mounting plate kidney holes 41 are oriented perpendicular to each other. Specifically, when the mounting plate 4 is mounted on the mechanism bracket 3, the bolt can pass through the transverse kidney hole 31, so that the horizontal Y-direction adjustment of the just-closed position proximity switch 5 and the closing position proximity switch 6 is realized; two mounting plate kidney holes 41 are arranged on the mounting plate 4, and the horizontal X-direction adjustment of the approach switch 5 at the just closing position and the approach switch 6 at the closing position can be realized.
The three-dimensional adjustment of the approach switch 5 at the just-closed position and the approach switch 6 at the closing position relative to the detected metal position is mainly used for matching the induction distance of the approach switches; the sensing distance is the most important parameter of the proximity switch, and the position sensor can act when an object moves to the proximity switch and approaches a certain distance. It is necessary to analyze different distances between the proximity switch and the detected surface, i.e., the sensing range of the proximity switch in the horizontal X direction.
When the breaker is in a switch-on position, the relative positions of the mounting plate 4 and the mechanism bracket 3 in the horizontal X direction and the horizontal Y direction are adjusted through the mounting plate kidney hole 41 and the transverse kidney hole 31, so that the sensing surface of the proximity switch is parallel to the metal surface 21 of the detected metal. The horizontal X-direction distance between the sensing surface and the metal surface 21 is adjusted by moving the waist hole 41 of the mounting plate along the horizontal X-direction.
When the distance between the sensing surface of the same proximity switch and the metal surface 21 of the detected metal in the horizontal X direction is measured, the height in the vertical Z direction, namely the height distance between the detected metal and the transmission shaft 1 of the circuit breaker is adjusted in a matching manner, and different sensing distances of the proximity switch are measured.
When the central axis of the proximity switch coincides with the central axis of the metal to be detected, the time when the signal of the proximity switch is changed for the first time is obtained by adjusting the relative distance in the horizontal X direction between the sensing surface of the proximity switch and the metal surface 21 of the metal to be detected. This position is also a stable sensing position of the proximity switch. The purpose is to determine the horizontal X-direction distance between the sensing surface of the proximity switch and the metal surface 21 of the metal being detected.
In the preferred embodiment, the mounting plate 4 has four proximity switch mounting holes 42, and as shown in fig. 6a, each circuit breaker closing position monitoring device has 4 proximity switches. Two close position proximity switches 6 are provided at the close position and two close position proximity switches 5 are provided at the close position, so that two proximity switches are provided at each position for increasing the reliability of detection.
Example 2
In addition to embodiment 1, the position sensor may be replaced with the diffusion-reflection type photosensor 9, the detection target element 2 may be made of any material that can be detected by the diffusion-reflection type photosensor 9, and the shape of the detection head is set in accordance with the matching requirement with the diffusion-reflection type photosensor 9; otherwise, as in example 1, as shown in fig. 7, the light projecting portion and the light receiving portion of the diffusion reflection type photosensor 9 were both disposed in the groove type detection port; at the corresponding switch-on position and just-on position, the detected element 2 is located in the effective detection range of the detection port.
Both the photoelectric sensor and the proximity switch are non-contact position sensors. The adoption of the diffusion reflection type photoelectric sensor 9 avoids the requirement of the common correlation type photoelectric sensor on the consistent installation of the superposition of the optical axes of the light projection part and the light receiving part. A diffuse reflection type sensor includes a light projecting portion and a light receiving portion, and is simple in structure and easy to install.
Example 3
On the basis of embodiment 1, the position sensor is replaced by a travel switch 10, the detected element 2 can be made of any material which can be matched with the travel switch 10 for detection, and the shape of a detection head is set according to the matching requirement of the detection head and the travel switch 10; otherwise, as in embodiment 1, as shown in fig. 8, the travel switch 10 is a contact type position sensor, and the force generated when the transmission part of the circuit breaker moves is transmitted to the interior of the travel switch 10 by the contact of the swing lever with the detected element 2. Extremely high mechanical repeatability accuracy can be achieved.
Finally, it should be noted that: the utility model provides a three embodiment can independently carry out the monitoring that closes a floodgate targets in place respectively, also can make up the use, and above embodiment only is used for the explanation simultaneously the utility model discloses a technical scheme rather than to its restriction, though it is right to refer to above-mentioned embodiment the utility model discloses carry out detailed explanation, the ordinary skilled person in the art should understand: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as falling within the scope of the claims of the invention.
Claims (8)
1. The device for monitoring the in-place closing of the circuit breaker is characterized by comprising a detected element (2), a mechanism bracket (3), a mounting plate (4) and a position sensor;
the detected element (2) is fixed on the transmission shaft (1) of the circuit breaker along the radial direction;
the mechanism bracket (3) is sleeved on the transmission shaft (1) of the circuit breaker;
the mounting plate (4) is fixed on the mechanism bracket (3) in parallel with the axis of the transmission shaft (1) of the circuit breaker; position sensors are respectively arranged on the mounting plate (4) corresponding to the switching-on position and the just-switching-on position of the detected element (2);
the position sensor is used for detecting the position of the detected element (2).
2. The device for monitoring the in-place closing of the circuit breaker according to claim 1, wherein the detected element (2) comprises a detecting head and a fixing ring, the fixing ring is nested on the transmission shaft (1) of the circuit breaker, and the detecting head extends outwards in the radial direction.
3. The device for monitoring the in-place closing of the circuit breaker according to claim 1, wherein a transverse kidney hole (31) is formed in an end plate at one end of the mechanism bracket (3); the mounting plate (4) is arranged in an L shape, a mounting plate kidney hole (41) is formed in the short plate, and a sensor is fixed on the long plate; the directions of the transverse kidney holes (31) and the mounting plate kidney holes (41) are mutually vertical.
4. The device for monitoring the in-place closing of the circuit breaker according to claim 1, wherein a plurality of position sensors are respectively arranged corresponding to the closing position and the just closing position of the detected element (2); the output end of the position sensor corresponding to the switching-on position is connected with the switching-on and circuit, the output end of the position sensor corresponding to the just-on position is connected with the just-on and circuit, and the output ends of the switching-on and circuit and the just-on and circuit are connected with the judgment and circuit.
5. The device for monitoring the in-place closing of the circuit breaker according to claim 1, wherein the output end of the position sensor is connected with the collector (8), and the power supply end is connected with the power supply (7).
6. The device for monitoring the in-place closing of the circuit breaker as claimed in claim 1, wherein the position sensor is a proximity switch; at the corresponding switch-on position and the just-closed position, the detected element (2) is made of metal, and the metal surface of the detected element is positioned in the effective detection range of the induction surface of the proximity switch.
7. The device for monitoring the closing position of the circuit breaker according to claim 1, wherein the position sensor adopts a diffusion reflection type photoelectric sensor (9); the light projecting part and the light receiving part of the diffusion reflection type photoelectric sensor (9) are both arranged in the groove-shaped detection port; at the corresponding switch-on position and just-on position, the detected element (2) is positioned in the effective detection range of the detection port.
8. The device for monitoring the in-place closing of the circuit breaker according to claim 1, wherein the position sensor adopts a travel switch (10), and a rocker contact of the travel switch (10) is arranged in contact with the detected element (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022277486.7U CN213398835U (en) | 2020-10-13 | 2020-10-13 | Device for monitoring in-place closing of circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022277486.7U CN213398835U (en) | 2020-10-13 | 2020-10-13 | Device for monitoring in-place closing of circuit breaker |
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| CN213398835U true CN213398835U (en) | 2021-06-08 |
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| CN202022277486.7U Active CN213398835U (en) | 2020-10-13 | 2020-10-13 | Device for monitoring in-place closing of circuit breaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866623A (en) * | 2021-09-27 | 2021-12-31 | 广东电网有限责任公司 | Ground knife auxiliary node device of outdoor capacitor bank |
| EP4125106A1 (en) * | 2021-07-27 | 2023-02-01 | Abb Schweiz Ag | Monitoring system for a low voltage, medium voltage, or high voltage circuit breaker |
-
2020
- 2020-10-13 CN CN202022277486.7U patent/CN213398835U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4125106A1 (en) * | 2021-07-27 | 2023-02-01 | Abb Schweiz Ag | Monitoring system for a low voltage, medium voltage, or high voltage circuit breaker |
| US20230035067A1 (en) * | 2021-07-27 | 2023-02-02 | Abb Schweiz Ag | Monitoring System for a Low Voltage, Medium Voltage, or High Voltage Circuit Breaker |
| US12025664B2 (en) | 2021-07-27 | 2024-07-02 | Abb Schweiz Ag | Monitoring system for a low voltage, medium voltage, or high voltage circuit breaker |
| CN113866623A (en) * | 2021-09-27 | 2021-12-31 | 广东电网有限责任公司 | Ground knife auxiliary node device of outdoor capacitor bank |
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