CN213816007U

CN213816007U - Circuit breaker with detachable temperature measurement module

Info

Publication number: CN213816007U
Application number: CN202022445491.4U
Authority: CN
Inventors: 邵江华; 司莺歌; 朱俊
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-07-27
Anticipated expiration: 2030-10-28

Abstract

The utility model provides a circuit breaker with detachable temperature measurement module, includes casing and looks utmost point and is used for gathering and handle the main line board of signal, the looks utmost point is including the binding post that is used for inserting the major loop, binding post is corresponding with the wiring hole of casing the outside of casing is equipped with detachable temperature measurement module, temperature measurement module and main line board are connected, temperature measurement module includes apron and temperature sensor. The utility model discloses a circuit breaker, its temperature measurement module detachable sets up in the both sides of casing, and this kind of temperature measurement module with annex form installation can enough avoid the temperature measurement module setting to occupy too much space inside the casing, has realized the detection to the binding post temperature again, satisfies the miniaturized, intelligent and modular development trend of circuit breaker.

Description

Circuit breaker with detachable temperature measurement module

Technical Field

The utility model relates to an electric power system field, concretely relates to circuit breaker with detachable temperature measurement module.

Background

Circuit breakers, also known as automatic air switches or automatic air circuit breakers, are important switching devices for electrical power systems, can be used to distribute electrical energy and to protect lines and power supply equipment from overloads and short circuits, and can also be used for infrequent line switching and for infrequent motor starting. When the circuit breaker normally operates, the circuit breaker can switch on and off load power of electrical equipment, fault current can be reliably cut off when the system breaks down, the electrical system and the electrical equipment can normally, stably and safely operate depending on reasonable adjustment and adaptation of various parameters of the circuit breaker, wherein the temperature of a wiring terminal of the circuit breaker is an important factor influencing the performance of the circuit breaker, when the circuit breaker normally operates, a main circuit of the circuit breaker can generate heat inevitably, and if the circuit breaker has the problem of poor contact between a wiring board and an external lead, the temperature of the wiring board and a main loop inside the circuit breaker can rapidly rise, the abnormal heat generation can cause unstable mechanical performance of a product of the circuit breaker due to reduction of insulation grade, and the service life of the circuit breaker is seriously influenced. However, the current circuit breaker is limited in internal space, and the temperature measuring function of the wiring terminal cannot be set, so that the circuit breaker is not beneficial to safe use, and the requirements of miniaturization, intellectualization and modularization of the circuit breaker gradually cannot be met.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, can measure the circuit breaker that has detachable temperature measurement module of binding post temperature.

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

the utility model provides a circuit breaker with detachable temperature measurement module, includes casing and looks utmost point and is used for gathering and handle the main line board of signal, the looks utmost point is including the binding post that is used for inserting the major loop, binding post is corresponding with the wiring hole of casing the outside of casing is equipped with detachable temperature measurement module, temperature measurement module and main line board are connected, temperature measurement module includes apron and temperature sensor.

Further, the apron is connected with the casing be equipped with first limit structure and second limit structure on the apron, first limit structure is used for fixed temperature sensor, and the thermocouple wire of connection on temperature sensor fixes on the second limit structure of apron, and temperature sensor is used for acquireing binding post's temperature condition.

Furthermore, the temperature measuring module is arranged above the wiring hole, a temperature sensing groove is arranged above the wiring hole, and the temperature sensor correspondingly extends into the temperature sensing groove to be contacted with a wiring board of the wiring terminal and is used for acquiring the temperature of the wiring terminal; and threading holes are formed in the two sides of the shell and are used for enabling signal wires connected between the temperature measuring module and the main circuit board to be connected in a threading mode.

Furthermore, the temperature sensor is electrically connected with the main circuit board through a thermocouple wire and used for feeding back a temperature signal of the wiring terminal to the main circuit board.

Further, the temperature measurement module still includes the secondary circuit board of being connected with the main line, the secondary circuit board is installed on the apron, and temperature sensor passes through the thermocouple line and is connected with the secondary circuit board electricity for to secondary circuit board feedback binding post's temperature signal, secondary circuit board's controller is with temperature signal conversion digital signal feedback to main circuit board.

Furthermore, a plug is arranged on the auxiliary circuit board, a socket is arranged on the main circuit board, and the main circuit board and the auxiliary circuit board realize signal transmission through the matching of the socket and the plug.

Further, the cover plate is provided with at least two buckling parts, the shell is provided with at least two clamping grooves, one clamping groove is also used as a threading hole, and the buckling parts correspond to the clamping grooves and are matched with the clamping grooves to fixedly connect the cover plate and the shell.

Furthermore, a groove structure is arranged on one side, close to the shell, of the cover plate, at least one first limiting boss serving as a first limiting structure is arranged on the edge of one side of the groove structure, an installation groove used for installing a temperature sensor is arranged in the middle of the first limiting boss, at least one second limiting boss serving as a second limiting structure is arranged on the edge of the other side of the groove structure, and a threading groove for a thermocouple wire to pass through is formed in the second limiting boss; the edge of the groove structure protrudes to form a buckling part, and the cover plate is detachably fixed on the shell through the buckling part.

Further, the cover plate is assembled to both side exteriors of the housing by screws.

Further, still be provided with the control pole in the casing, the control pole sets up with the looks utmost point side by side the inside drive module that sets up of control pole is used for realizing divide-shut brake, and drive module's main circuit board is laid in the inside of control pole.

The utility model discloses a circuit breaker with detachable temperature measurement module, its temperature measurement module detachable sets up in the both sides of casing, and this kind of temperature measurement module with annex form installation can enough avoid the temperature measurement module setting to occupy too much space inside the casing, has realized the detection to the binding post temperature again, satisfies the miniaturized, intelligent and the modular trend of circuit breaker.

In addition, the temperature sensor directly feeds back the temperature signal of the wiring terminal to the main circuit board through the thermocouple wire, so that the cost of the temperature measurement module is reduced, and the assembly of the temperature measurement module is facilitated; in addition, an auxiliary circuit board which is in signal connection with the main circuit board can be arranged on the cover board, the temperature signal obtained by the temperature sensor is converted into a digital signal on the auxiliary circuit board and transmitted to the main circuit board, so that the temperature condition of the wiring terminal can be more accurately and rapidly obtained by the main circuit board, and in addition, the main circuit board and the auxiliary circuit board are matched in a socket and plug mode, so that the assembly difficulty is simplified.

Drawings

Fig. 1 is a schematic structural diagram of a circuit breaker according to the present invention;

FIG. 2 is a front view of FIG. 1;

fig. 3 is a schematic structural diagram of a circuit breaker according to the present invention when the temperature measurement module is not installed;

fig. 4 is a schematic structural diagram of a circuit breaker according to the present invention when no cover plate is provided;

fig. 5 is a schematic structural view of the inside of a case of a circuit breaker according to the present invention;

fig. 6 is a schematic structural diagram of a temperature measurement module in a circuit breaker according to the present invention (a first embodiment);

fig. 7 is a schematic structural diagram of a temperature measurement module in a circuit breaker according to the present invention (a second embodiment);

fig. 8 is a schematic view of a structure of a cover plate in a circuit breaker.

Detailed Description

The following further describes a specific embodiment of the circuit breaker with a detachable temperature measurement module according to the present invention with reference to the embodiments shown in fig. 1 to 8. The utility model discloses a circuit breaker with detachable temperature measurement module is not limited to the description of following embodiment.

The utility model provides a circuit breaker with detachable temperature measurement module, includes casing 1 and looks utmost point 2 and is used for gathering and handle the main line board 31 of signal, the looks utmost point 2 is including being used for accessing binding post 21 of major loop, binding post 21 is corresponding with casing 1's wiring hole 11 the outside of casing 1 is equipped with detachable temperature measurement module 4, temperature measurement module 4 is connected with main line board 31, temperature measurement module 4 includes apron 41 and temperature sensor 42.

The utility model discloses a circuit breaker with detachable temperature measurement module, temperature measurement module 4 detachable set up in the both sides of casing 1, and this kind of temperature measurement module 4 with the installation of annex form can enough avoid temperature measurement module 4 to set up and occupy too much space in casing 1 is inside, has realized the detection to the 21 temperatures of binding post again, satisfies the miniaturized, intelligent and modular development trend of circuit breaker.

With reference to fig. 1 to 8, a circuit breaker with a detachable temperature measurement module includes a housing 1, and a control electrode 3 and a phase electrode 2 that are arranged in parallel inside the housing 1, wherein a driving module is arranged in the control electrode 3, the driving module includes a main circuit board 31 for collecting and processing signals, the main circuit board 31 is laid inside the control electrode 3, the main circuit board 31 is provided with a controller with collecting and signal processing functions, and the controller may be a chip or an MCU; the driving module is also provided with a motor and a transmission mechanism, the motor is matched with the handle of the phase pole 2 through the transmission mechanism to realize automatic switching-on, and is matched with the lock catch of the operating mechanism of the phase pole 2 to realize automatic switching-off.

As shown in fig. 1 to 4, two phase poles 2 are arranged in parallel on one side of the control pole 3, but three, four or more phase poles 2 are also possible, a pair of connection terminals 21 for connecting to the main circuit are arranged on both sides of each phase pole 2, the pair of connection terminals 21 are respectively arranged on both sides of the housing 1, and each connection terminal 21 corresponds to one connection hole 11 arranged on the housing 1. The temperature measuring module 4 is arranged outside the two sides of the shell 1, the temperature measuring module 4 is electrically connected with the main circuit board 31 and used for receiving and processing signals of the temperature of the reaction wiring terminal 21, preferably, the temperature measuring module 4 is arranged above the wiring hole 11, and the two sides of the shell 1 are provided with threading holes 13 for the cross connection of signal wires connected between the main circuit board 31 and the temperature measuring module 4. Temperature measurement module 4 includes apron 41 and temperature sensor 42, wherein apron 41 and casing 1's fixed connection be equipped with first limit structure and second limit structure on the apron 41, first limit structure is used for fixed temperature sensor 42, and thermocouple wire 43 of connecting on temperature sensor 42 fixes on the second limit structure of apron 41, and temperature sensor 42 is used for acquireing binding post 21's temperature condition. Preferably, as shown in fig. 3 and 5, a temperature sensing groove 12 is provided above the wiring hole 11, the temperature sensing groove 12 corresponds to a wiring board of the wiring terminal 21, and the temperature sensor 42 is inserted into the temperature sensing groove 12 to contact the wiring board and senses the temperature of the wiring terminal 21. Of course, the temperature sensor 42 may acquire the temperature of the connection terminal 21 in a non-contact manner.

As a first embodiment, the temperature sensor 42 is electrically connected to the main circuit board 31 directly through a thermocouple wire 43 for feeding back a temperature signal of the connection terminal 21 to the main circuit board 31, and the thermocouple wire 43 passes through the wire insertion holes 13 provided on both sides of the housing 1. At this time, preferably, the detachable connection between the cover plate 41 and the housing 1 is realized by a snap structure, and fig. 6 and 8 are combined to provide a specific structure of the cover plate 41, the cover plate 41 is rectangular as a whole, a groove structure is arranged on one side of the cover plate 41 close to the housing 1, at least one first limiting boss 411 as a first limiting structure is arranged on one side edge of the groove structure, two first limiting bosses 411 are arranged in fig. 1 to 4, two first limiting bosses 411 are arranged, a mounting groove is arranged in the middle of the first limiting boss 411, and a temperature sensor 42 is mounted in each mounting groove; at least one second limiting boss 412 serving as a second limiting structure is arranged at the edge of the other side of the groove structure, a threading groove for thermocouple wires 43 to pass through is formed in the middle of the second limiting boss 412, three second limiting bosses 412 are shown in fig. 6 and 8, two of the second limiting bosses 412 enable the thermocouple wires 43 to be linearly arranged in the cover plate 41 to avoid mutual winding among the thermocouple wires 43, and the other second limiting boss 412 is preferably arranged at a position corresponding to the threading hole 13 of the shell 1 and is used for collecting all the thermocouple wires 43 together to be connected with the main circuit board 31; the two opposite side edges of the cover plate 41 are respectively provided with a convex buckling part 413, as shown in fig. 6 and 8, the buckling part 413 is formed by the edge of the groove structure in a convex manner, the buckling part 413 is located at the left and right sides of the groove structure, in this embodiment, the housing 1 is correspondingly provided with two clamping grooves 14, at least one clamping groove 14 is also used as the threading hole 13, as shown in fig. 3 and 4, the clamping groove 14 located at the right part of one side of the housing 1 is used as the threading hole 13, of course, the two clamping grooves 14 can also be used as the threading hole 13 at the same time, the specific positions of the clamping groove 14 and the buckling part 413 are preferably determined by the position of the threading hole 13 on the housing 1, under the cooperation of the buckling part 413 and the clamping groove 14, the cover plate 41 is fixedly installed at the two sides of the housing 1, this structure of combining the functions of the threading hole 13 and the clamping groove 14 facilitates the installation of the temperature measuring module 4, and reduces the number of the openings on the housing 1, when the temperature of the wiring terminal 21 does not need to be measured, the temperature measuring module 4 can be detached, and the threading hole 13 and the clamping groove 14 are sealed by structures such as sealing plugs or partition plates. In this embodiment, the shapes of the first limit boss 411, the second limit boss 412 and the locking part 413 are not particularly limited, so as to achieve the limit function.

As a second embodiment, as shown in fig. 7 and 8, the temperature measuring module 4 further includes a sub circuit board 44 connected to the main circuit board 31, the sub circuit board 44 is mounted on the cover plate 41, the temperature sensor 42 is electrically connected to the sub circuit board 44 through a thermocouple wire 43 and is used for feeding back a temperature signal of the connection terminal 21 to the sub circuit board 44, a controller for acquiring and processing signals is arranged on the sub circuit board 44, and the controller of the sub circuit board 44 converts the temperature signal into a digital signal and feeds back the digital signal to the controller of the main circuit board 31. Preferably, a plug 441 is arranged on the auxiliary circuit board 44, a socket (not shown) is arranged on the main circuit board 31, the plug 441 extends into the casing 1 through the threading hole 13 or the socket extends out of the casing 1 through the threading hole 13, the main circuit board 31 and the auxiliary circuit board 44 realize signal transmission through the matching of the socket and the plug 441, and of course, the main circuit board 31 and the auxiliary circuit board 44 can also be connected through a conducting wire.

The cover plate 41 of the present embodiment is preferably assembled to the two sides of the housing 1 by screws, in this case, only one threading hole 13 needs to be arranged on the housing 1, and there is no need to arrange the card slot 14 and the buckling part 413 as in the first embodiment, the rest of the structure of the cover plate 41 is the same as that of the first embodiment, and all of the structure has the first limiting boss 411 and the second limiting boss 412, the sub circuit board 44 is installed in the groove structure of the cover plate 41 near the housing 1, the edge of the sub circuit board 44 is free from the first limiting boss 411 and the second limiting boss 412, and the plug 441 for socket-fitting with the main circuit board 31 is arranged on one side of the sub circuit board 44. Of course, the cover plate 41 of this embodiment may also adopt a snap connection manner as in the first embodiment, and the functions of the card slot 14 and the wiring hole 11 may be combined, or a card slot 14 having only a single function may be provided. In addition, when the main board 31 and the sub-board 44 adopt a structure in which the socket is fitted with the plug 441, the size of the wiring hole 11 is larger than that of the wiring hole 11 of the first embodiment.

In addition, the present application is equally applicable to a single-pole circuit breaker, or a circuit breaker without a separate drive pole 3, in which case the drive module may be disposed in one of the phase pole 2 modules, and the main wiring board 31 is laid in the phase pole 2.

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. A circuit breaker with a detachable thermometric module, comprising a casing (1) and a phase pole (2), and a main circuit board (31) for collecting and processing signals, said phase pole (2) comprising a connection terminal (21) for accessing the main circuit, said connection terminal (21) corresponding to a connection hole (11) of the casing (1), characterized in that: the temperature measurement device is characterized in that a detachable temperature measurement module (4) is arranged outside the shell (1), the temperature measurement module (4) is connected with the main circuit board (31), and the temperature measurement module (4) comprises a cover plate (41) and a temperature sensor (42).

2. The circuit breaker with the detachable thermometric module of claim 1, wherein: apron (41) are connected with casing (1) be equipped with first limit structure and second limit structure on apron (41), first limit structure is used for fixed temperature sensor (42), and thermocouple wire (43) of connection on temperature sensor (42) are fixed on the second limit structure of apron (41), and temperature sensor (42) are used for acquireing binding post (21) temperature condition.

3. The circuit breaker with the detachable thermometric module of claim 1, wherein: the temperature measuring module (4) is arranged above the wiring hole (11), a temperature sensing groove (12) is arranged above the wiring hole (11), and the temperature sensor (42) correspondingly extends into the temperature sensing groove (12) to be in contact with a wiring board of the wiring terminal (21) and is used for acquiring the temperature of the wiring terminal (21); and threading holes (13) are formed in two sides of the shell (1), and the threading holes (13) are used for enabling signal wires connected between the temperature measuring module (4) and the main circuit board (31) to be connected in a threading manner.

4. A circuit breaker with a detachable thermometric module according to any one of claims 1-3, wherein: the temperature sensor (42) is electrically connected with the main circuit board (31) through a thermocouple wire (43) and is used for feeding back a temperature signal of the wiring terminal (21) to the main circuit board (31).

5. The circuit breaker with the detachable thermometric module according to claim 1 or 2, wherein: the temperature measurement module (4) further comprises an auxiliary circuit board (44) connected with the main circuit, the auxiliary circuit board (44) is installed on the cover plate (41), the temperature sensor (42) is electrically connected with the auxiliary circuit board (44) through a thermocouple wire (43) and used for feeding back a temperature signal of the wiring terminal (21) to the auxiliary circuit board (44), and a controller of the auxiliary circuit board (44) converts the temperature signal into a digital signal and feeds back the digital signal to the main circuit board (31).

6. The circuit breaker with the detachable temperature measurement module of claim 5, wherein: the plug (441) is arranged on the auxiliary circuit board (44), the socket is arranged on the main circuit board (31), and the main circuit board (31) and the auxiliary circuit board (44) realize signal transmission through the matching of the socket and the plug (441).

7. The circuit breaker with the detachable thermometric module of claim 3, wherein: the cable connector is characterized in that at least two buckling parts (413) are arranged on the cover plate (41), at least two clamping grooves (14) are arranged on the shell (1), one clamping groove (14) is also used as a threading hole (13), and the cover plate (41) is fixedly connected with the shell (1) through matching with the clamping groove (14) corresponding to the buckling parts (413).

8. The circuit breaker with the detachable thermometric module of claim 2, wherein: a groove structure is arranged on one side, close to the shell (1), of the cover plate (41), at least one first limiting boss (411) serving as a first limiting structure is arranged on the edge of one side of the groove structure, an installation groove used for installing a temperature sensor (42) is formed in the middle of the first limiting boss (411), at least one second limiting boss (412) serving as a second limiting structure is arranged on the edge of the other side of the groove structure, and a threading groove for thermocouple wires (43) to pass through is formed in the second limiting boss (412); a buckling part (413) is formed by protruding the edge of the groove structure, and the buckling part (413) detachably fixes the cover plate (41) on the shell (1).

9. The circuit breaker with the detachable thermometric module of claim 1, wherein: the cover plates (41) are assembled outside two sides of the shell (1) through screws.

10. The circuit breaker with the detachable thermometric module of claim 1, wherein: still be provided with control pole (3) in casing (1), control pole (3) and looks utmost point (2) set up side by side set up drive module in the inside of control pole (3) and be used for realizing divide-shut brake, drive module's main circuit board (31) are laid in the inside of control pole (3).