Angular displacement sensor assembly of circuit breaker operating mechanism

Abstract

The utility model discloses an angular displacement sensor assembly of a circuit breaker operating mechanism, the circuit breaker operating mechanism comprises a mounting plate and an operating rotating shaft penetrating through the mounting plate, the angular displacement sensor assembly comprises a shell, a circuit board, a chip, a mounting sleeve and a magnetic ring, the shell is provided with a through hole, and the circuit board is arranged in the through hole. The shell sleeves the operating rotating shaft through the through hole and is fixed on the mounting plate, the circuit board is fixed in the shell, the chip is arranged on the circuit board, the mounting sleeve sleeves the operating rotating shaft and is linked with the operating rotating shaft, the mounting sleeve penetrates through the through hole, the magnetic ring fixedly sleeves the mounting sleeve, and the chip and the magnetic ring are correspondingly arranged. The chip senses the rotation angle of the magnetic ring so as to measure the angular displacement of the operating rotating shaft. Through innovative design of the structure and the installation structure of the angular displacement sensor assembly, the angular displacement sensor assembly has the advantages of improved durability, reduced maintenance cost, strong adaptability, enhanced safety, data accuracy, simple and convenient installation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of travel acquisition of a spring operating mechanism of an intelligent circuit breaker, and more specifically to an angular displacement sensor component of the circuit breaker operating mechanism. Background Art

[0002] In the power distribution industry, smart ring main units are gradually replacing traditional ring main units as key equipment to improve the automation and intelligence level of the power grid. These smart ring main units integrate advanced sensors and control systems to achieve remote monitoring, fault diagnosis and self-healing functions, thereby enhancing the reliability and efficiency of the power grid.

[0003] In the data acquisition system of the intelligent ring main unit, travel data acquisition is a key technical difficulty. In order to accurately obtain the travel data of the circuit breaker, this paper proposes an innovative solution, which is to use non-contact angular displacement sensor technology. This sensor can accurately measure the angular displacement of the circuit breaker operating mechanism, allowing the system to calculate a series of key parameters, including closing speed, opening speed, closing time, opening time, total travel and overtravel, and opening distance. With these data, the accuracy and reliability of the circuit breaker operation can be improved, thereby enhancing the performance and safety of the entire intelligent ring main unit.

[0004] There are two ways of travel of the existing collection ring network cabinet circuit breaker mechanism:

[0005] 1. Install the linear sensor on the upper end of the vacuum circuit breaker.

[0006] 2. To install the angular displacement sensor at the installation location of the sign, the sign needs to be removed.

[0007] However, the prior art has the following defects:

[0008] 1. The mature angular displacement sensors used in the laboratory are installed in contact on the measured axis. Contact measurement is prone to mechanical wear and cannot achieve the acquisition of tens of thousands or even hundreds of thousands of rotation angles.

[0009] 2. An indicator plate is installed at one end of the output shaft of the circuit breaker operating mechanism used in the ring main unit to indicate whether the circuit breaker is in the closed position or the open position; the other end is connected to the switch body to drive the rotation of the switch body. This makes it impossible to install the angular displacement sensor axially.

[0010] 3. The circuit breaker of the ring main unit switch body is a high-voltage live part with a carrying voltage of more than 12kV. The sensor is an electronic product and cannot withstand such a high voltage.

[0011] 4. Ring main units are used in a variety of environments and are subject to extreme temperatures, humidity, rain, and dust. Conventional sensors are easily affected by the environment. Summary of the invention

[0012] The utility model overcomes the shortcomings of the prior art and provides an angular displacement sensor assembly for a circuit breaker operating mechanism. The structure is reasonably designed. By innovatively designing the structure of the angular displacement sensor assembly and its installation structure, the utility model has the advantages of improved durability, reduced maintenance cost, strong adaptability, enhanced safety, data accuracy, and easy installation.

[0013] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0014] An angular displacement sensor assembly for a circuit breaker operating mechanism, the circuit breaker operating mechanism comprising a mounting plate and an operating shaft passing through the mounting plate, the angular displacement sensor assembly comprising a shell, a circuit board, a chip, a mounting sleeve and a magnetic ring, the shell being provided with a through hole, the shell being sleeved on the operating shaft through the through hole and being fixed on the mounting plate, the circuit board being fixed inside the shell, the chip being arranged on the circuit board, the mounting sleeve being sleeved on the operating shaft and being arranged in linkage with the operating shaft, the mounting sleeve being arranged passing through the through hole, the magnetic ring being fixedly sleeved on the mounting sleeve, the chip being arranged corresponding to the magnetic ring, and the chip sensing the rotation angle of the magnetic ring to realize the measurement of the angular displacement of the operating shaft.

[0015] Preferably, the mounting sleeve is configured as a non-magnetic conductive body.

[0016] Preferably, the mounting sleeve comprises a sleeve portion and a support portion which are integrally arranged, and the magnetic ring is fixedly sleeved on the sleeve portion and supported by the support portion.

[0017] Preferably, a penetration channel is provided on the operating shaft, a penetration hole is provided on the mounting sleeve at a position corresponding to the penetration channel, and fixing pins are provided in the penetration hole and the penetration channel, and the fixing pins fix the mounting sleeve on the operating shaft.

[0018] Preferably, a mounting groove is provided in the shell, the mounting groove is communicated with the through hole, the circuit board is adapted to the shape of the mounting groove, and the circuit board is fixed in the mounting groove.

[0019] Preferably, at least one positioning column is provided in the installation groove, a positioning hole is provided on the positioning column, and an opening corresponding to the positioning hole is provided on the circuit board.

[0020] Preferably, there is a gap between a side wall of the mounting groove and the circuit board, and at least one positioning strip is arranged in the gap.

[0021] Preferably, the shell includes a base and a cover body which are separately arranged, the through holes and the mounting grooves are arranged on the base, the cover body is provided with cover holes arranged corresponding to the through holes, the base and the cover body are fixedly connected by fasteners, and the fasteners pass through the shell and fix the shell on the mounting plate.

[0022] Preferably, a fixing column is provided in the base, a fixing hole penetrating the base is provided on the fixing column, and a mounting hole corresponding to the fixing hole is provided on the cover.

[0023] Beneficial effects of the utility model:

[0024] 1. Improved durability: Due to the use of non-contact measurement, mechanical wear is avoided, which significantly improves the durability and service life of the sensor and meets the needs of long-term continuous operation.

[0025] 2. Reduced maintenance costs: Non-contact sensors reduce maintenance requirements and require almost no replacement or calibration compared to traditional contact sensors, thereby reducing maintenance costs.

[0026] 3. Strong adaptability: The sensor design of the utility model can adapt to the high pressure and harsh environmental conditions of the ring network cabinet, including extreme temperature, humidity, rain and dust, ensuring the stability and reliability of the sensor.

[0027] 4. Enhanced safety: Through off-axis installation and magnetic induction measurement, the sensor is prevented from being directly exposed to high-voltage live parts, reducing safety risks.

[0028] 5. Data accuracy: Non-contact measurement technology provides high-precision angle measurement, ensuring accurate collection of travel data of the circuit breaker operating mechanism, which helps to improve the accuracy and reliability of circuit breaker operation.

[0029] 6. Easy installation: The utility model allows the sensor to be installed non-concentrically with the rotating end, providing greater installation flexibility and simplifying the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram reflecting the circuit breaker operating mechanism of a specific embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the angular displacement sensor assembly according to a specific embodiment of the utility model;

[0032] Figure 3 The exploded view of the angular displacement sensor assembly is shown in the specific embodiment of the utility model;

[0033] Figure 4 It is an exploded view of a shell according to a specific embodiment of the present utility model.

[0034] In the figure: 100, circuit breaker operating mechanism; 101, mounting plate; 102, operating shaft; 1021, penetration channel; 200, angular displacement sensor assembly; 1, shell; 11, through hole; 12, mounting groove; 13, positioning column; 131, positioning hole; 14, side wall; 15, gap; 151, positioning strip; 16, base; 161, fixing column; 162, fixing hole; 17, cover; 171, cover hole; 172, mounting hole; 2, circuit board; 3, chip; 4, mounting sleeve; 41, sleeve portion; 42, support portion; 43, penetration hole; 44, fixing pin; 5, magnetic ring; 6, fastener. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1-4As shown, an angular displacement sensor assembly of a circuit breaker operating mechanism, the circuit breaker operating mechanism 100 includes a mounting plate 101 and an operating shaft 102 passing through the mounting plate 101, the angular displacement sensor assembly 200 includes a housing 1, a circuit board 2, a chip 3, a mounting sleeve 4 and a magnetic ring 5, the housing 1 is provided with a through hole 11, the housing 1 is sleeved on the operating shaft 102 through the through hole 11 and is fixed on the mounting plate 101, the circuit board 2 is fixed inside the housing 1, the chip 3 is arranged on the circuit board 2, the mounting sleeve 4 passes through the through hole 11 and is sleeved on the operating shaft 102 The movable shaft 102 is linked with the operating shaft 102, the magnetic ring 5 is fixedly sleeved on the mounting sleeve 4, the chip 3 is arranged corresponding to the magnetic ring 5, and the chip 3 senses the rotation angle of the magnetic ring 5 to realize the measurement of the angular displacement of the operating shaft 102; the mounting sleeve 5 is configured as a non-magnetic conductor; the mounting sleeve 4 includes an integrally arranged sleeve portion 41 and a support portion 42, the magnetic ring 5 is fixedly sleeved on the sleeve portion 41 and supported by the support portion 42; a penetration channel 1021 is arranged on the operating shaft 102, and a penetration hole 43 is arranged at a position corresponding to the penetration channel 1021 on the mounting sleeve 4, and the penetration hole 43 is arranged at the position corresponding to the penetration channel 1021. A fixing pin 44 is provided in the hole 43 and the through channel 1021, and the fixing pin 44 fixes the mounting sleeve 4 on the operating shaft 102; a mounting groove 12 is provided in the housing 1, and the circuit board 2 is adapted to the shape of the mounting groove 12, and the circuit board 2 is fixed in the mounting groove 12; at least one positioning column 13 is provided in the mounting groove 12, and a positioning hole 131 is provided on the positioning column 13, and an opening corresponding to the positioning hole 131 is provided on the circuit board 2; there is a gap 15 between a side wall 14 of the mounting groove 12 and the circuit board 2, and at least one A positioning bar 151; the shell 1 includes a base 16 and a cover 17 which are separately arranged, the through hole 11 and the mounting groove 12 are arranged on the base 16, and the cover 17 is provided with a cover hole 171 arranged corresponding to the through hole 11, the base 16 and the cover 17 are fixedly connected by a fastener 6, and the fastener 6 passes through the shell 1 and fixes the shell 1 on the mounting plate 101; a fixing column 161 is arranged in the base 16, and a fixing hole 162 passing through the base 16 is arranged on the fixing column 161, and a mounting hole 172 arranged corresponding to the fixing hole 162 is arranged on the cover 17.

[0037] By adopting the above technical solution, in the utility model, through the innovative structural design, the main innovation lies in the structure of the angular displacement sensor assembly 200 and its installation. By fixing the magnetic ring 5 on the mounting sleeve 4, and fixing the mounting sleeve 4 to the operating shaft 102 through the fixing pin 44, when the operating shaft 102 rotates, the magnetic ring 5 will also rotate accordingly. By arranging the circuit board 2 and the chip 3 in the housing 1, wherein the chip 3 is arranged correspondingly to the magnetic ring 5, the angular displacement of the operating shaft 102 can be measured by sensing the rotation angle of the magnetic ring 5 by the chip 3, thereby realizing the rotation of the angular displacement sensor and the measured object, which is a structural form of different axes. The mounting sleeve 4 is configured as a non-magnetic body, and the mounting sleeve 4 can be an aluminum block, a non-magnetized metal block or a plastic part, etc. By providing the mounting groove 12, the circuit board 2 can be well positioned and installed, and the positioning and disassembly of the circuit board 2 can be facilitated by providing the gap 15 and the positioning bar 151.

[0038] In addition, the utility model adopts a non-contact measurement principle to avoid mechanical wear and ensure long-term stable operation; the utility model realizes off-axis installation of the sensor, allowing installation without interfering with existing signs and switch bodies; the utility model uses magnetic induction technology to measure magnetic field changes and accurately determine angles, and is suitable for high-voltage environments.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An angular displacement sensor assembly for a circuit breaker operating mechanism, the circuit breaker operating mechanism (100) comprising a mounting plate (101) and an operating shaft (102) passing through the mounting plate (101), characterized in that: The angular displacement sensor assembly (200) comprises a housing (1), a circuit board (2), a chip (3), a mounting sleeve (4) and a magnetic ring (5); the housing (1) is provided with a through hole (11); the housing (1) is sleeved on an operating shaft (102) through the through hole (11) and is fixed on a mounting plate (101); the circuit board (2) is fixed inside the housing (1); the chip (3) is arranged on the circuit board (2); the mounting sleeve (4) is sleeved on the operating shaft (102) and is arranged in linkage with the operating shaft (102); the mounting sleeve (4) is arranged through the through hole (11); the magnetic ring (5) is fixedly sleeved on the mounting sleeve (4); the chip (3) and the magnetic ring (5) are arranged correspondingly; the chip (3) senses the rotation angle of the magnetic ring (5) to achieve measurement of the angular displacement of the operating shaft (102).

2. The angular displacement sensor assembly of a circuit breaker operating mechanism according to claim 1, characterized in that: The mounting sleeve (4) is configured as a non-magnetic conductive body.

3. The angular displacement sensor assembly of a circuit breaker operating mechanism according to claim 2, characterized in that: The mounting sleeve (4) comprises a sleeve portion (41) and a support portion (42) which are integrally arranged, and the magnetic ring (5) is fixedly sleeved on the sleeve portion (41) and supported by the support portion (42).

4. An angular displacement sensor assembly for a circuit breaker operating mechanism according to claim 1, 2 or 3, characterized in that: The operating shaft (102) is provided with a penetration channel (1021), the mounting sleeve (4) is provided with a penetration hole (43) at a position corresponding to the penetration channel (1021), and a fixing pin (44) is provided in the penetration hole (43) and the penetration channel (1021), and the fixing pin (44) fixes the mounting sleeve (4) on the operating shaft (102).

5. An angular displacement sensor assembly for a circuit breaker operating mechanism according to claim 1, 2 or 3, characterized in that: A mounting groove (12) is provided in the housing (1), the circuit board (2) is adapted in shape to the mounting groove (12), and the circuit board (2) is fixed in the mounting groove (12).

6. The angular displacement sensor assembly of a circuit breaker operating mechanism according to claim 5, characterized in that: At least one positioning column (13) is arranged in the installation groove (12), a positioning hole (131) is arranged on the positioning column (13), and an opening corresponding to the positioning hole (131) is arranged on the circuit board (2).

7. The angular displacement sensor assembly of a circuit breaker operating mechanism according to claim 6, characterized in that: There is a gap (15) between a side wall (14) of the installation groove (12) and the circuit board (2), and at least one positioning strip (151) is arranged in the gap (15).

8. The angular displacement sensor assembly of a circuit breaker operating mechanism according to claim 5, characterized in that: The housing (1) comprises a base (16) and a cover (17) which are separately arranged. The through hole (11) and the mounting groove (12) are arranged on the base (16). The cover (17) is provided with a cover hole (171) arranged corresponding to the through hole (11). The base (16) and the cover (17) are fixedly connected by a fastener (6). The fastener (6) passes through the housing (1) and fixes the housing (1) on the mounting plate (101).

9. The angular displacement sensor assembly of a circuit breaker operating mechanism according to claim 8, characterized in that: A fixing column (161) is arranged inside the base (16), a fixing hole (162) penetrating the base (16) is arranged on the fixing column (161), and a mounting hole (172) corresponding to the fixing hole (162) is arranged on the cover (17).

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