CN113295120A - Circuit breaker contact displacement sensor - Google Patents
Circuit breaker contact displacement sensor Download PDFInfo
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- CN113295120A CN113295120A CN202110568785.2A CN202110568785A CN113295120A CN 113295120 A CN113295120 A CN 113295120A CN 202110568785 A CN202110568785 A CN 202110568785A CN 113295120 A CN113295120 A CN 113295120A
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- winding column
- fixed
- movable
- displacement sensor
- circuit breaker
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
A circuit breaker contact displacement sensor comprising: the device comprises a rigid rope, a fixed frame, a sliding block, a displacement sensor, a movable winding column, a fixed winding column and a rotating shaft; the pivot sets up the upper end at the mount, decide around the post setting in the pivot, decide around the post and include: the front fixed winding column, the middle fixed winding column and the rear fixed winding column; the displacement sensor is fixedly arranged at the lower end of the fixed frame, the sliding block is arranged outside the displacement sensor, the middle part of the movable winding column is rotatably arranged on the sliding block, one end of the movable winding column is a front movable winding column, and the other end of the movable winding column is a rear movable winding column; the rigid cord comprises: a rigid rope a, a rigid rope b and a rigid rope c; one end of the rigid rope a is fixedly arranged on a contact of the circuit breaker, the other end of the rigid rope a is fixedly arranged on the middle fixed winding column, the two ends of the rigid rope b are fixed on the front fixed winding column and the front movable winding column, and the two ends of the rigid rope c are fixed on the rear fixed winding column and the rear movable winding column.
Description
Technical Field
The invention relates to a power data sensor, in particular to a circuit breaker contact displacement data sensor.
Background
In recent years, with the rapid development of smart grid and internet of things technologies, smart sensing technologies are more and more widely applied to links of power generation, power transmission, power transformation, power distribution, power utilization and scheduling. Big data and high concurrent data processing technology supporting intelligent sensing application is one of the keys of the whole intelligent sensing technology application.
At present, the circuit breaker develops towards miniaturization, higher and higher requirements are provided for the performance and the size of the circuit breaker, good contact property of the closing action of a main loop needs to be ensured in the working process of the circuit breaker, the opening action can be quickly separated in place, and therefore the movement stroke of a moving contact of the main loop needs to be measured irregularly so as to facilitate the subsequent adjustment of the position of the moving contact, the former measuring method is that a displacement sensor is directly placed in the circuit breaker, when the circuit breaker stops working, the opening and closing action of the circuit breaker is controlled to detect the movement stroke of the moving contact in the circuit breaker, wherein the moving contact comprises a contact body and a pull rod which is connected with the contact body and drives the contact to reciprocate, but the size of the circuit breaker is continuously reduced, the internal space is also continuously reduced, and the measurement cannot be realized by adopting the former manual measurement or placing of the displacement sensor, increasing the difficulty of displacement measurement.
Disclosure of Invention
Therefore, the present invention has been made in view of the above problems, and the present invention is to solve the problem that the displacement of the contact is difficult to measure when the internal space of the circuit breaker is small, by a circuit breaker contact displacement sensor, and the above objects are achieved by the following technical solutions:
a circuit breaker contact displacement sensor comprising: displacement measuring devices, rigid cords;
the displacement measuring device includes: the device comprises a fixed frame, a sliding block, a displacement sensor, a movable winding column, a fixed winding column and a rotating shaft;
the fixed frame is fixedly arranged outside the breaker shell; the fixed upper end that sets up at the mount of pivot, decide to wind the post and rotate the setting in the pivot, decide to wind the post and include: the front fixed winding column, the middle fixed winding column and the rear fixed winding column; the front fixed winding column, the middle fixed winding column and the rear fixed winding column are coaxially and fixedly arranged in sequence and are rotatably arranged on the rotating shaft, and the rear fixed winding column is close to one end of the fixed frame;
the displacement sensor is fixedly arranged at the lower end of the fixed frame, a vertical sliding groove is formed in the outer portion of the fixed frame, the sliding block is arranged on the sliding groove outside the displacement sensor, the middle of the movable winding column is rotatably arranged on the sliding block, the sliding block extends out of two ends of the movable winding column, one end of the movable winding column is a front movable winding column, and the other end of the movable winding column is a rear movable winding column;
the rigid cord includes: a rigid rope a, a rigid rope b and a rigid rope c; the one end of rigidity rope a is fixed to be set up on the contact of circuit breaker, and its other end is fixed to be set up in decide around the post and twine, rigidity rope b both ends are fixed and twine around the post before with move around the cylinder surface of post before deciding, rigidity rope c both ends are fixed and twine around the post after with move around the cylinder surface of post after.
The invention has the following beneficial effects:
1. the diameter of the front fixed winding column is smaller than that of the middle fixed winding column, so that the take-up length of the front fixed winding column is smaller than the pay-off length of the middle fixed winding column when the fixed winding column rotates by the same angle, the ascending height of the sliding block is reduced, the effect of reducing the measuring stroke of the displacement sensor is achieved, the stroke of the displacement sensor is reduced, and the smaller displacement sensor can be installed.
2. The arrangement of the movable winding column ensures that the rope lengths of the front end and the rear end can be converted through the rotation of the movable winding column, and ensures that the rigid ropes of the front end and the rear end can be always in a tightened state.
3. According to the invention, the front and rear fixed winding columns are arranged, one end of each fixed winding column is wound, the other end of each fixed winding column is wound, and the diameter of each fixed winding column is larger than that of each fixed winding column, so that the winding length is larger than that of the winding and unwinding, and the ascending displacement of the sliding block is further reduced, thereby achieving the effect of further reducing the stroke of the displacement sensor, and further mounting a smaller displacement sensor.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front structural schematic view of the displacement measuring device of the present invention.
Fig. 3 is a rear structural schematic diagram of the displacement measuring device of the present invention.
Fig. 4 is a schematic diagram of a detailed structure of the displacement measuring device of the present invention.
The device comprises a circuit breaker 1, a circuit breaker 2, a displacement measuring device 3 and a rigid rope; 11. the circuit breaker comprises a circuit breaker shell, 12, a pull rod, 13, a movable contact, 14 and a fixed frame; 21. the device comprises a sliding block 22, a displacement sensor 23, a movable winding column 24, a fixed winding column 25 and a rotating shaft; 31. rigid ropes a, 32, b, 33, c; 231. front winding post 232, rear winding post 241, front winding post 242, middle winding post 243 and rear winding post.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those embodiments can be easily implemented by those having ordinary skill in the art to which the present invention pertains. However, the present invention may be embodied in many different forms and is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components not connected to the present invention will be omitted from the drawings.
As shown in fig. 1, a circuit breaker contact displacement sensor includes: the device comprises a circuit breaker 1, a displacement measuring device 2 and a rigid rope 3;
the circuit breaker 1 includes: the circuit breaker comprises a circuit breaker shell 11, a pull rod 12, a movable contact 13 and a fixed frame 14; the moving contact 13 is fixedly connected with a pull rod 12 at the lower end, the moving contact 13 is positioned above the breaker shell 11, the pull rod 12 moves up and down in the breaker shell 11, and the fixed frame 14 is fixedly arranged outside the breaker shell 11;
as shown in fig. 1 to 4, the displacement measuring device 2 includes: a sliding block 21, a displacement sensor 22, a movable winding column 23, a fixed winding column 24 and a rotating shaft 25; the fixed upper end that sets up in mount 14 the place ahead of pivot 25, decide to wind post 24 and rotate the setting on pivot 25, decide to wind the post, include: the diameter of the front winding column 241, the middle winding column 242 and the rear winding column 243 can be different, in the embodiment, the diameter of the middle winding column 242 is the largest, the diameter of the front winding column 241 is slightly smaller, and the diameter of the rear winding column 242 is the smallest;
as shown in fig. 1, 2, 3, and 4, the displacement sensor 22 is fixedly disposed at the lower end of the front of the fixing frame 14, and is provided with a vertical sliding groove on the outer portion thereof, the sliding block 21 is vertically slidably disposed in front of the displacement sensor 22, the displacement sensor 22 is a conventional art, the structure of the displacement sensor 22 is not unique, the displacement sensor 22 in this embodiment only needs to be able to limit the sliding block 21 to freely slide in the vertical direction and measure the displacement of the sliding block 21, the middle portion of the winding post 23 is rotatably disposed on the sliding block 21, the front end and the rear end of the winding post 23 extend out of the sliding block 21, the front end is a front winding post 231, the rear end is a rear winding post 232, and preferably as an implementation manner, the position of the winding post 23 is directly below the winding post 24, the front winding post 231 corresponds to be directly below the front winding post 241, the rear winding post 232 corresponds to be directly below the rear winding post 243, in other embodiments of the present invention, the position of the orbiting column 23 may not be directly below the stationary column 24; preferably, as an implementation mode, the diameters of the front movable winding column 231 and the rear movable winding column 232 are the same, and in other embodiments of the present invention, the diameters of the front movable winding column 231 and the rear movable winding column 232 may be different;
as shown in fig. 1, 2, 3 and 4, the rigid rope 3 includes: rigid cord a31, rigid cord b32, rigid cord c 33; the rigid rope 3 has the characteristics that the rope cannot be stretched in a certain tension range or the stretching amount in a certain tension range is very short and can be ignored; one end of the rigid rope a31 is fixedly arranged at the right end of the movable contact 13, the other end of the rigid rope a31 is fixedly arranged on the surface of the cylinder of the middle fixed winding column 242, the rigid rope a31 is wound on the surface of the cylinder of the middle fixed winding column 242 for a plurality of circles until the rigid rope a31 is in a tightened state, the rigid rope b32 is correspondingly fixed and wound on the surfaces of the cylinders of the front fixed winding column 241 and the front movable winding column 231 until the rigid rope b32 is in a tightened state, and the rigid rope c33 is correspondingly fixed and wound on the surfaces of the cylinders of the rear fixed winding column 243 and the rear movable winding column 232 until the rigid rope c33 is in a tightened state; preferably, as an implementation mode, the paying-off directions of the front fixed winding post 241 and the front movable winding post 231 after being wound by the rigid rope b32 are both the left side, the paying-off directions of the rear fixed winding post 243 and the rear movable winding post 232 after being wound by the rigid rope c33 are both the right side, and the paying-off direction of the middle fixed winding post 242 after being wound by the rigid rope a31 is the left side; in other embodiments of the present invention, other paying-off directions can be adopted for the fixed winding column 24 and the movable winding column 23;
the working principle of the invention is as follows:
when the movable contact 13 vertically rises, the movable contact 13 pulls the rigid rope a31 at the lower end, the rigid rope a31 pulls the fixed winding post 24 to rotate, in this embodiment, the rotation of the fixed winding post 24 can make the front fixed winding post 241 take up wires, the rear fixed winding post 243 pay out wires, because the diameter of the front fixed winding post 241 is greater than that of the rear fixed winding post 243, the length of the taken-up wires is greater than that of the taken-up wires, the rigid rope 3 pulls the sliding block 21 to rise for a distance, and the front movable winding post 231 and the rear movable winding post 232 respectively pay out and take up wires to ensure that the rigid rope b32 and the rigid rope c33 are always kept in a tightened state, and the movable winding post 23 is always in a horizontal state, and the displacement sensor 22 measures the rising displacement of the sliding block 21, i.e. the displacement of the movable contact 13 can be obtained through mathematical relations among various parameters.
Claims (5)
1. A circuit breaker contact displacement sensor comprising: a displacement measuring device (2), a rigid rope (3); the method is characterized in that:
the displacement measuring device (2) comprises: the device comprises a fixed frame (14), a sliding block (21), a displacement sensor (22), a movable winding column (23), a fixed winding column (24) and a rotating shaft (25);
the fixed frame (14) is fixedly arranged outside the shell of the circuit breaker (1); the fixed upper end that sets up at mount (14) in pivot (25), decide around post (24) and rotate the setting on pivot (25), decide around the post and include: a front winding column (241), a middle winding column (242), and a rear winding column (243); the front fixed winding column (241), the middle fixed winding column (242) and the rear fixed winding column (243) are coaxially and fixedly arranged in sequence and are rotatably arranged on the rotating shaft (25), and the rear fixed winding column (243) is one end close to the fixed frame (14);
the displacement sensor (22) is fixedly arranged at the lower end of the fixed frame (14), a vertical sliding groove is formed in the outer portion of the fixed frame, the sliding block (21) is arranged on the sliding groove outside the displacement sensor (22), the middle portion of the movable winding column (23) is rotatably arranged on the sliding block (21), two ends of the movable winding column (23) extend out of the sliding block (21), one end of the movable winding column is a front movable winding column (231), and the other end of the movable winding column is a rear movable winding column (232);
the rigid cord (3) comprises: a rigid cord a (31), a rigid cord b (32), and a rigid cord c (33); one end of the rigid rope a (31) is fixedly arranged on a contact of the circuit breaker (1), the other end of the rigid rope a (31) is fixedly arranged on the middle fixed winding column (242) and is wound, two ends of the rigid rope b (32) are fixedly wound on the cylinder surfaces of the front fixed winding column (241) and the front movable winding column (231), and two ends of the rigid rope c (33) are fixedly wound on the cylinder surfaces of the rear fixed winding column (243) and the rear movable winding column (232).
2. A circuit breaker contact displacement sensor according to claim 1, wherein: the diameters of the front winding column (241), the middle winding column (242) and the rear winding column (243) can be set differently according to the application environment and the conversion requirement.
3. A circuit breaker contact displacement sensor according to claim 1, wherein: the position of the movable winding column (23) is positioned right below the fixed winding column (24), the front movable winding column (231) corresponds to the position right below the front fixed winding column (241), and the rear movable winding column (232) corresponds to the position right below the rear fixed winding column (243).
4. A circuit breaker contact displacement sensor according to claim 1, wherein: the diameters of the front movable winding column (231) and the rear movable winding column (232) are the same.
5. A circuit breaker contact displacement sensor according to claim 1, wherein: the paying-off directions of the front fixed winding column (241) and the front movable winding column (231) after being wound by the rigid rope b (32) are both the left side, the paying-off directions of the rear fixed winding column (243) and the rear movable winding column (232) after being wound by the rigid rope c (33) are both the right side, and the paying-off direction of the middle fixed winding column (242) after being wound by the rigid rope a (31) is the left side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568785.2A CN113295120B (en) | 2021-05-25 | 2021-05-25 | Circuit breaker contact displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568785.2A CN113295120B (en) | 2021-05-25 | 2021-05-25 | Circuit breaker contact displacement sensor |
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| CN113295120A true CN113295120A (en) | 2021-08-24 |
| CN113295120B CN113295120B (en) | 2023-06-06 |
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| CN202110568785.2A Active CN113295120B (en) | 2021-05-25 | 2021-05-25 | Circuit breaker contact displacement sensor |
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| CN201628536U (en) * | 2010-02-03 | 2010-11-10 | 邓锦杰 | Displacement sensor for pull rope |
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2021
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| CN113295120B (en) | 2023-06-06 |
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