CN211016944U

CN211016944U - Circuit breaker capable of monitoring contact pressure in real time

Info

Publication number: CN211016944U
Application number: CN201921838794.3U
Authority: CN
Inventors: 辛娜
Original assignee: Shanghai Chint Intelligent Technology Co Ltd
Current assignee: Shanghai Chint Intelligent Technology Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-07-14
Anticipated expiration: 2029-10-29

Abstract

The application discloses a circuit breaker capable of monitoring contact pressure in real time, which comprises a shell, a moving contact, a static contact and a pressure sensor, wherein the moving contact, the static contact and the pressure sensor are arranged in the shell, one end of the static contact is a contact part, the other end of the static contact is a fixed part fixed on the shell, the contact part and the fixed part of the static contact are communicated, a static silver point matched with the moving contact is arranged on one side surface of the contact part of the static contact, the pressure sensor is arranged between the other side surface of the contact part and a bottom plate of the shell, and the pressure sensor is connected with an intelligent controller or; when the circuit breaker is switched on, the moving contact compresses the static silver point, the final pressure between the moving contact and the static silver point is transmitted to the pressure sensor, and the pressure sensor transmits information to the intelligent controller or the independent display module. An object of the utility model is to overcome prior art's defect, provide a simple structure, improve the reliability of product, but the convenient unusual real-time supervision contact pressure's of in time discovery operation circuit breaker.

Description

Circuit breaker capable of monitoring contact pressure in real time

Technical Field

The utility model relates to a low-voltage apparatus technical field, concretely relates to but circuit breaker of real-time supervision contact pressure.

Background

In the prior art, the pressure value of a contact is measured by simulating the opening and closing movement of the contact of the circuit breaker in the assembling and debugging stage of the circuit breaker, but the pressure value cannot be used under the normal operation and electrification condition, but a product capable of monitoring the final pressure of the contact in real time under the electrification condition is not found so far, and the operation state of the product cannot be monitored in real time.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, improve the reliability of product, but the convenient unusual real-time supervision contact pressure's of in time discovery operation circuit breaker.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the circuit breaker capable of monitoring the pressure of the contact in real time comprises a shell, a moving contact, a static contact and a pressure sensor, wherein the moving contact, the static contact and the pressure sensor are arranged in the shell, one end of the static contact is a contact part, the other end of the static contact is a fixed part fixed on the shell, the contact part and the fixed part of the static contact are communicated, a static silver point matched with the moving contact is arranged on one side surface of the contact part of the static contact, and the pressure sensor is arranged between the other side surface of the contact part and a bottom. The pressure sensor is used for being connected with the intelligent controller or the independent display module, when the circuit breaker is switched on, the moving contact compresses the static silver point, the final pressure between the moving contact and the static silver point is transmitted to the pressure sensor, and the pressure sensor transmits information to the intelligent controller or the independent display module.

Preferably, the bottom plate is provided with a containing groove, the pressure sensor is installed in the containing groove, a cushion block is arranged between the pressure sensor and the contact part of the static contact, and the cushion block is arranged in the containing groove and can slide in the depth direction of the containing groove.

Preferably, one side surface of the cushion block is a contact surface which is in contact with the contact portion of the fixed contact, the other side surface of the cushion block is a transmission surface which is in contact with the pressure sensor, the edge of the transmission surface of the cushion block protrudes or is flush with the edge of the contact surface, and the size of the transmission surface of the cushion block is smaller than or equal to that of the pressure sensor.

Preferably, the holding tank is square groove, pressure sensor is square pressure sensor, the cushion is the cuboid.

Preferably, the spacer is a thermal insulation.

Preferably, the pressure sensor is a high-temperature pressure sensor, is mounted on the bottom plate, and is directly connected with the contact portion of the static contact in a contact manner when the circuit breaker is switched on.

Preferably, the pressure sensor is fixed on the contact portion of the fixed contact, and the pressure sensor is in contact with the bottom plate when the circuit breaker is switched on.

Preferably, the fixed part of the static contact is fixed on the bottom plate of the housing and is arranged with the contact part, and the fixed part is connected with the contact part through flexible connection.

Preferably, the fixed contact is further provided with an arc striking plate, one end of the arc striking plate is connected to the contact portion of the fixed contact, and the other end of the arc striking plate is tilted and parallel to and spaced from the fixing portion.

Preferably, the pressure sensor is a thin film pressure sensor.

The utility model discloses a but circuit breaker of real-time supervision contact pressure through be equipped with pressure sensor between the opposite face of quiet silver point on quiet contact and casing, realizes can be in circuit breaker circular telegram use in real-time supervision contact pressure, and the effect of monitoring contact pressure is can judge the contact wearing and tearing condition, confirms whether the contact can also normally use to play the effect of control circuit breaker running state, conveniently in time discovers the abnormal condition of operation, and simple structure improves the reliability of product; meanwhile, the pressure sensor is arranged between the static contact and the shell, so that parts in the shell cannot be interfered, if the rotating wiring of the moving contact is not influenced, the structure is simple, and the layout is compact and reasonable.

Drawings

Fig. 1 is a side view of a part of the structure of the circuit breaker of the present invention;

fig. 2 is a side view of the static contact of the present invention;

fig. 3 is a front view of the static contact of the present invention;

fig. 4 is an exploded view of the housing part structure of the present invention.

Detailed Description

The following describes a specific embodiment of the circuit breaker capable of monitoring the contact pressure in real time according to the present invention with reference to the embodiments shown in fig. 1 to 4. The utility model discloses a but circuit breaker of real-time supervision contact pressure is not limited to the description of following embodiment.

As shown in fig. 1 and fig. 2, the utility model discloses a but circuit breaker of real-time supervision contact pressure, including casing 4, moving contact 5, static contact 1 and the pressure sensor 3 of setting in casing 4, the one end of static contact 1 is contact site 11, and the other end is fixed part 13 on casing 4 for be connected with the back row of connecing (not shown in the figure) electricity, switch on between contact site 11 and the fixed part 13 of static contact 1. A static silver point 10 matched with the movable contact 5 is arranged on one side surface of a contact part 11 of the static contact 1, a pressure sensor 3 is arranged between the other side surface of the contact part 11 and a bottom plate 40 of the shell 4, and the pressure sensor 3 is connected with an intelligent controller or an independent display module (not shown in the figure). When the circuit breaker is switched on, the movable contact 5 compresses the static silver point 10, the final pressure between the movable contact 5 and the static silver point 10 is transmitted to the pressure sensor 3, and the pressure sensor 3 transmits information to the intelligent controller or the independent display module for a user to observe. The utility model discloses a but circuit breaker of real-time supervision contact pressure through be equipped with pressure sensor between the opposite face of quiet silver point on quiet contact and casing, realizes can be in circuit breaker circular telegram use in real-time supervision contact pressure, and the effect of monitoring contact pressure is can judge the contact wearing and tearing condition, confirms whether the contact can also normally use to play the effect of control circuit breaker running state, conveniently in time discovers the abnormal condition of operation, and simple structure improves the reliability of product; meanwhile, the pressure sensor is arranged between the static contact and the shell, so that parts in the shell can not be interfered, such as wiring of the moving contact is not influenced, the structure is simple, and the layout is compact and reasonable.

As shown in fig. 1-4, in the first embodiment of the circuit breaker capable of monitoring the contact pressure in real time of the present invention, the cushion block 2 is disposed between the pressure sensor 3 and the contact portion 11 of the static contact 1, the bottom plate 40 is provided with the accommodating groove 400, the pressure sensor 3 is installed in the accommodating groove 400, the cushion block 2 is disposed in the accommodating groove 400, and can freely slide within a certain range in the depth direction (the direction indicated by the arrow in fig. 1) of the accommodating groove 400. When the breaker is switched on, the contact part 11 of the static contact 1 is contacted with the cushion block 2, and the final pressure between the movable contact 5 and the static silver point 10 is transmitted to the pressure sensor 3 through the cushion block 2. The spacer 2 of this embodiment is a heat insulating member. The heat on the effective isolated static contact is transmitted for pressure sensor through the cushion, also avoids pressure sensor direct and conductive system contact to prevent the measurement deviation that high temperature leads to, improve contact pressure measurement's precision, also can prevent to take place electric breakdown, reduce pressure sensor service environment's requirement simultaneously.

In this embodiment, one side surface of the pad 2 is a contact surface 20 in contact with the contact portion 11 of the static contact 1, the other side surface is a transmission surface in contact with the pressure sensor 3, an edge of the transmission surface of the pad 2 protrudes or is flush with an edge of the contact surface 20, and the size of the transmission surface of the pad 2 is smaller than or equal to that of the pressure sensor 3 (that is, when the pad 2 is placed on the pressure sensor 3, the transmission surface of the pad 2 can be entirely on the pressure sensor 3 without a suspended protruding portion). The pressure sensor prevents the part outside the sensing area of the pressure sensor from being stressed to influence the measurement precision, and improves the precision of the contact pressure measurement.

Specifically, as shown in fig. 4, the receiving groove 400 is a square groove, the pressure sensor 3 is a square pressure sensor, and the pad 2 is a rectangular parallelepiped, i.e., the edge of the transmission surface of the pad 2 is flush with the edge of the contact surface 20, i.e., the size of the contact surface 20 of the pad 2 is equal to the size of the transmission surface, the length L1 of the pad 2 is equal to or less than the length L2 of the pressure sensor 3, and the width W1 of the pad 2 is equal to or less than the width W2 of the pressure sensor 3.

The utility model discloses a but in the embodiment two of circuit breaker of real-time supervision contact pressure, pressure sensor 3 is high temperature type pressure sensor 3, installs on bottom plate 40, and is connected with the 11 direct contact of contact portion of static contact 1 when the circuit breaker closes a floodgate.

The utility model discloses a but in the embodiment three of real-time supervision contact pressure's circuit breaker, pressure sensor 3 fixes on the contact site 11 of static contact 1, and pressure sensor 3 and bottom plate 40 contactless when the circuit breaker is opened a floodgate, pressure sensor 3 and bottom plate 40 direct contact or indirect contact when the circuit breaker is closed a floodgate.

As shown in fig. 2 and fig. 3, in the static contact structure of the present invention, the fixing portion 13 of the static contact 1 is fixed on the bottom plate 40 of the housing 4, and is separately disposed from the contact portion 11, and the fixing portion 13 and the contact portion 11 are connected through the flexible connection 12 to realize conduction therebetween. The flexible connection 12 is made by stacking flexible copper sheets, and has certain mobility, but is not too flexible to cause the contact 11 to be shaken and influence the performance. Traditional static contact is overall structure generally, and is fixed with the bottom plate, such mounting structure can produce the pretightning force to the static contact, can disturb pressure sensor, and the utility model discloses a static contact 1 switches on through fixed part 13 and the 11 components of a whole that can function independently of contact part and through the flexible coupling 12 that has certain mobilizable nature between the two, can prevent to disturb pressure sensor because the pretightning force that fixed part 13 fastening of static contact 1 produced on bottom plate 40, improves the measurement accuracy of contact pressure, also can prevent simultaneously that product major loop from connecting female the arranging after, the postnotum is connected with fixed part 13 of static contact 1 and is produced external force, the stress point increases, influence the measurement of contact pressure between moving contact 5 and static contact 1.

In addition, as shown in fig. 2 and 3, the static contact 1 is further provided with an arc starting sheet 14, one end of the arc starting sheet 14 is connected to the contact portion 11 of the static contact 1, and the other end of the arc starting sheet 14 is tilted and parallel to and spaced from the fixing portion 13. The arc ignition piece 14 comprises an arc end 141, a transition section 142 and a connecting part 143 which are connected in sequence, the width of the transition section 142 is smaller than the width of the arc end 141 and the connecting part 143 at the connecting part, so that the transition section 142 is connected between the arc end 141 and the connecting part 143 in a concave shape, one end of the connecting part 143 of the arc ignition piece 14 is attached to the contact part 11 of the static contact 1, and the other end of the connecting part 143 tilts and is connected with the transition section 142 in a flush manner. The arc striking plate 14 is further provided with a waist-shaped hole 140, and the length of the waist-shaped hole 140 is longer and extends on the arc end 141, the transition section 142 and the connecting part 143.

The utility model discloses a pressure sensor 3 adopts film type pressure sensor. It should be noted that the pressure sensor 3, the intelligent controller or the separate display module are all commercially available products, and the pressure sensor monitors the pressure and transmits information to the intelligent controller or the separate display module to display, which is achievable by the prior art.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a circuit breaker of real-time supervision contact pressure which characterized in that: the pressure sensor comprises a shell (4), a moving contact (5) arranged in the shell (4), a static contact (1) and a pressure sensor (3), wherein one end of the static contact (1) is a contact part (11), the other end of the static contact is a fixed part (13) fixed on the shell (4), the contact part (11) and the fixed part (13) of the static contact (1) are communicated, a static silver point (10) matched with the moving contact (5) is arranged on one side surface of the contact part (11) of the static contact (1), and the pressure sensor (3) is arranged between the other side surface of the contact part (11) and a bottom plate (40) of the shell (4).

2. The circuit breaker capable of monitoring the pressure of the contact in real time according to claim 1, wherein: be equipped with holding tank (400) on bottom plate (40), install in holding tank (400) pressure sensor (3), be equipped with cushion (2) between contact site (11) of pressure sensor (3) and static contact (1), can slide on the direction of depth of holding tank (400) in holding tank (400) is arranged in to cushion (2).

3. The circuit breaker capable of monitoring the pressure of the contact in real time according to claim 2, wherein: one side face of the cushion block (2) is a contact face (20) in contact with a contact part (11) of the static contact (1), the other side face of the cushion block is a transmission face in contact with the pressure sensor (3), the edge of the transmission face of the cushion block (2) protrudes or is flush with the edge of the contact face (20), and the size of the transmission face of the cushion block (2) is smaller than or equal to that of the pressure sensor (3).

4. The circuit breaker capable of monitoring the pressure of the contact in real time according to claim 3, wherein: the holding tank (400) is a square groove, the pressure sensor (3) is a square pressure sensor, and the cushion block (2) is a cuboid.

5. The circuit breaker capable of monitoring the pressure of the contact in real time according to claim 2, wherein: the cushion block (2) is a heat insulation piece.

6. The circuit breaker capable of monitoring the pressure of the contact in real time according to claim 1, wherein: the pressure sensor (3) is a high-temperature pressure sensor (3), is arranged on the bottom plate (40), and is directly contacted and connected with the contact part (11) of the static contact (1) when the breaker is switched on.

7. The circuit breaker capable of monitoring the pressure of the contact in real time according to claim 1, wherein: the pressure sensor (3) is fixed on the contact part (11) of the static contact (1), and the pressure sensor (3) is contacted with the bottom plate (40) when the breaker is switched on.

8. The circuit breaker of any one of claims 1-7, wherein the circuit breaker is capable of monitoring contact pressure in real time, and comprises: the fixed part (13) of the static contact (1) is fixed on the bottom plate (40) of the shell (4) and is arranged separately from the contact part (11), and the fixed part (13) is connected with the contact part (11) through a flexible connection (12).

9. The circuit breaker of claim 8, wherein the real-time monitoring of contact pressure comprises: still be equipped with run-on piece (14) on static contact (1), the one end of run-on piece (14) is connected on contact portion (11) of static contact (1), and the other end perk of run-on piece (14) is parallel and looks interval with fixed part (13).

10. The circuit breaker of any one of claims 1-7, wherein the circuit breaker is capable of monitoring contact pressure in real time, and comprises: the pressure sensor (3) is a film type pressure sensor.