CN212008846U

CN212008846U - Switch cabinet dynamic and static contact centering matching online detection device

Info

Publication number: CN212008846U
Application number: CN202020351168.8U
Authority: CN
Inventors: 卢景华; 王耀星; 严叶滨; 苏志榕
Original assignee: Xiamen Peaks Electric Co ltd
Current assignee: Xiamen Peaks Electric Co ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-11-24
Anticipated expiration: 2030-03-19

Abstract

The utility model relates to a cubical switchboard moves stationary contact and to middle complex on-line measuring device, the stationary contact is fixed in on the cubical switchboard cabinet body, the moving contact is fixed in on the circuit breaker, the device can include circuit board, sensor and unsmooth cooperation structure, unsmooth cooperation structure includes cavity and arch, the cavity with the arch is installed respectively in stationary contact side and moving contact side, vice versa; the circuit board is electrically connected with the sensor and used for detecting whether the concave cavity and the bulge are in alignment engagement or not on line. The utility model discloses can be under the condition of not modifying circuit breaker primary unit, realize moving static contact to the cubical switchboard and to well complex on-line measuring, ensure the complete centering of static contact, be applicable to new switch cabinet and old cubical switchboard transformation project.

Description

Switch cabinet dynamic and static contact centering matching online detection device

Technical Field

The utility model relates to a cubical switchboard field specifically relates to a cubical switchboard moves stationary contact and to well complex on-line measuring device.

Background

The draw-out type circuit breaker of the switch cabinet has the structure that a fixed contact is fixed on a cabinet body of the switch cabinet, a moving contact is fixed on the circuit breaker, the circuit breaker is fixed on a chassis vehicle, and the engagement and the matching of the fixed contact and the moving contact are completed by swinging the circuit breaker into the chassis vehicle. Be fixed in circuit breaker on chassis car for the cabinet body and be a moving part, because design or assembly reason, can not accomplish complete centering cooperation when probably causing the meshing of sound contact, this can produce contact resistance between the sound contact to cause sound contact meshing part partial discharge or local overheat, light person leads to the switch to burn out, and heavy person leads to the switch to explode and split, seriously endangers electric wire netting safety.

Disclosure of Invention

The utility model aims at providing a cubical switchboard moves stationary contact and to well complex on-line measuring device to solve above-mentioned problem. Therefore, the utility model discloses a specific technical scheme as follows:

the device can comprise a circuit board, a sensor and a concave-convex matching structure, wherein the concave-convex matching structure comprises a concave cavity and a protrusion which are respectively arranged on the static contact side and the moving contact side, and vice versa; the circuit board is electrically connected with the sensor and used for detecting whether the concave cavity and the bulge are in alignment engagement or not on line.

Further, the protrusion is a ball head, and the cavity is a tapered hole with a large inlet and a small bottom.

Further, the sensor is a rocker sensor module, a rocker rod end of the rocker sensor module is the ball head, and the tapered hole is formed in a tapered cup.

Further, the rocker sensor module is mounted on the moving contact side, and the cone is mounted on the stationary contact side.

Furthermore, the rocker sensor module is arranged in the moving contact cavity or on the breaker frame, and the cone-shaped cup is arranged in the static contact cavity or on the switch cabinet body.

Further, the rocker of the rocker sensor module and the ball head are integrally formed.

Further, the bottom of the cone-shaped cup is provided with a flange.

Further, the rocker sensor module is fixedly mounted on the circuit board.

Furthermore, the circuit board adopts a current transformer to obtain power and adopts a built-in power supply to supply power in a combined manner.

Further, the built-in power supply is a rechargeable battery or a super capacitor.

Further, still include the display screen, the display screen is installed on the cubical switchboard cabinet external side, the circuit board is installed in the cubical switchboard, with the sensor electricity is connected, is used for handling the signal that the sensor detected and with the testing result show on the display screen.

The utility model adopts the above technical scheme, the beneficial effect who has is: the utility model discloses can be under the condition of not modifying circuit breaker primary unit, realize moving the stationary contact to the cubical switchboard and to well complex on-line measuring, be applicable to newly adorn cubical switchboard and old cubical switchboard transformation project.

Drawings

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

Fig. 1 is a perspective view of an on-line detection device for the middle-fit of a movable contact and a stationary contact of a switch cabinet according to an embodiment of the present invention;

FIG. 2 is a perspective view of the cavity side of the on-line detection device engaged in the moving and stationary contact pair of the switchgear shown in FIG. 1;

fig. 3 is a perspective view of the convex side of the on-line detection device engaged in the moving and stationary contact pair of the switchgear shown in fig. 1.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1 to 3, the on-line detection device for the centering fit of the moving contact and the static contact of the switch cabinet can comprise a circuit board 1, a sensor 2 and a concave-convex fit structure, wherein the concave-convex fit structure comprises a concave cavity and a convex protrusion, the concave cavity and the convex protrusion are respectively arranged on the side of the fixed contact and the side of the moving contact, and vice versa; the circuit board 1 is electrically connected with the sensor 2 and used for detecting whether the concave cavity and the bulge are in alignment engagement or not on line. The sensor 2 may be installed on the side of the concave cavity or on the side of the convex. In the process that the chassis vehicle shakes in the circuit breaker, if cavity and arch centering, then sensor 2 can not move, otherwise, sensor 2 can move, and the circuit board 1 just can measure the central offset of sound contact according to the signal (for example, resistance change) that sensor 2 detected. The center offset can be communicated by sound, displayed by a display screen, or both. The operator can adjust the operation according to the information heard or seen, which is very convenient. Specifically, the display screen is installed on the outer side of the switch cabinet body, and the circuit board is installed in the switch cabinet, is electrically connected with the sensor, and is used for processing the signal detected by the sensor and displaying the detection result on the display screen. The display screen can be a CRT display screen, an LED display screen or an LCD display screen which are commercially available.

Preferably, the protrusion is a ball head, and the cavity is a tapered hole with a large inlet and a small bottom. The concave-convex matching structure of the ball head and the conical hole is simple to process and low in cost. Specifically, in the present embodiment, the sensor 2 is a rocker sensor module, which is fixedly installed in the moving contact cavity or at a designated position on the breaker frame. The rocker 21 of the rocker sensor 2 is a normal straight rod, the rod end is designed as a ball head 22, and the ball head 22 serves as the protrusion. The ball 22 and the rocker 21 may be integrally formed, or may be two parts that are assembled together (e.g., threaded or welded). The rocker sensor module 2 may be a commercially available XY two-axis rocker sensor module. The structure of which is well known and will not be described here. The cavity is provided on a cone 3, i.e. cone 3 has a conical bore 31. The cone 3 is mounted (e.g., by a flange 32 at its bottom) at a fixed contact cavity or at a designated location in a fixed contact side cabinet. According to the designed movable contact and fixed contact fit allowable centering error, the outer diameter of the rod end ball head 22 of the rocker 21 of the rocker sensor module 2 and the inlet diameter of the tapered hole 31 of the tapered cup 3 can be designed to be a proper fit clearance, for example, 0.1 mm. In the process of meshing the moving contact and the static contact, if the moving contact and the static contact are not centered, the rocker ball 22 is in contact with the conical surface of the conical hole 31 to cause the rocker 21 to act, and the rocker sensor module 2 can feed back the offset of the moving contact and the static contact; if centered, the rocker ball 22 is introduced directly into the tapered bore 31 without an offset.

In the embodiment shown, the rocker sensor module 2 and the cone 3 are each fixedly mounted on a respective

fixed plate

4a and 4b, the

fixed plates

4a and 4b in turn being mounted on the breaker frame and on the switchgear cabinet body, respectively.

Preferably, the working power supply of the circuit board 1 and the rocker sensor module 2 adopts a current transformer to obtain power and a built-in power supply (such as a rechargeable battery or a super capacitor) to supply power in a combined manner. When the switch cabinet is not powered on, the built-in power supply supplies power; when the switch cabinet is powered on (current exists at one time), the current transformer is used for getting power and supplying power, and the function of charging the built-in power supply is realized.

The utility model discloses can be under the condition of not modifying circuit breaker primary unit, realize moving the stationary contact to the cubical switchboard and to well complex on-line measuring, be applicable to newly adorn cubical switchboard and old cubical switchboard transformation project.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The on-line detection device is characterized by comprising a circuit board, a sensor and a concave-convex matching structure, wherein the concave-convex matching structure comprises a concave cavity and a protrusion, the concave cavity and the protrusion are respectively arranged on the side of the fixed contact and the side of the movable contact, and vice versa; the circuit board is electrically connected with the sensor and used for detecting whether the concave cavity and the bulge are in alignment engagement or not on line.

2. The on-line detecting device for the centering fit of the dynamic and static contacts of the switch cabinet as claimed in claim 1, wherein the protrusion is a ball head, and the cavity is a tapered hole with a large inlet and a small bottom.

3. The on-line detecting device for the dynamic-static contact centering matching of the switch cabinet as claimed in claim 2, wherein the sensor is a rocker sensor module, the rocker rod end of the rocker sensor module is the ball head, and the tapered hole is arranged on a tapered cup.

4. The on-line measuring device of claim 3, wherein the rocker sensor module is installed in the moving contact cavity or on the breaker frame, and the cone is installed in the static contact cavity or on the switch cabinet body.

5. The on-line detecting device for the dynamic-static contact centering matching of the switch cabinet as claimed in claim 3, wherein the rocker of the rocker sensor module and the ball head are integrally formed.

6. The on-line detecting device for the centering fit of the dynamic and static contacts of the switch cabinet as claimed in claim 3, wherein the bottom of the cone-shaped cup is a flange.

7. The on-line detection device for the centering of a moving and stationary contact of a switch cabinet as claimed in claim 3, wherein said rocker sensor module is fixedly mounted on said circuit board.

8. The on-line detection device for the centering matching of the moving and static contacts of the switch cabinet as claimed in claim 1, wherein the circuit board adopts a current transformer to obtain power and an internal power supply to supply power in combination.

9. The on-line detection device for the fit between the dynamic contact and the static contact of the switch cabinet as claimed in claim 8, wherein the built-in power supply is a rechargeable battery or a super capacitor.

10. The on-line detecting device for the switch cabinet dynamic-static contact centering matching as claimed in claim 1, further comprising a display screen, wherein the display screen is installed on the outer side of the cabinet body of the switch cabinet, the circuit board is installed in the switch cabinet and is electrically connected with the sensor for processing the signal detected by the sensor and displaying the detection result on the display screen.