CN220253948U - Intelligent monitoring device and switch cabinet - Google Patents

Abstract

The application discloses intelligent monitoring device and cubical switchboard. An intelligent monitoring device, comprising: a drawer body; the circuit breaker is arranged on the drawer body, is connected to the wire inlet plug through a first circuit and is connected to the wire outlet plug through a second circuit; the signal acquisition assembly comprises a plurality of signal acquisition units and is used for acquiring at least one of current, voltage and temperature information; the control module is arranged on the drawer body and is electrically connected with all the signal acquisition units and the circuit breaker. Therefore, the method can realize overload long delay, short circuit short delay, short circuit transient, grounding protection, leakage protection and fault wave recording; and (3) motor protection: overload, open-phase, locked-rotor, unbalanced load and abnormal voltage.

Description

Intelligent monitoring device and switch cabinet

Technical Field

The application relates to the field of switch cabinets, in particular to an intelligent monitoring device and a switch cabinet.

Background

In switchgear designs, the switching devices and control devices are integrated into the drawer; the most central parts of the switching device and the control device are a circuit breaker and a detection device. The circuit breaker can be connected to distribution busbar and electrical apparatus, and then with electric power transmission to electrical apparatus, and check out test set is used for detecting information such as the electric current, the voltage that pass through the circuit breaker, and temperature, then according to these information and artificial instruction, the break-make of control circuit breaker.

In the prior art, the devices for detecting the relevant parameters such as current, voltage and temperature are independent detection devices, and the independent detection devices comprise both a signal acquisition unit for detecting analog signals such as current, voltage and temperature and a signal processing unit for processing the analog signals.

Therefore, each individual detection device is bulky because it includes a signal acquisition unit, a signal processing unit, etc., and may be an individual device for which a housing, an input port, an output port are required. Therefore, when the detection device is arranged in the drawer, the input end and the output end of the detection device are required to be respectively connected through copper bars; while according to the relevant national regulations, sufficient safety clearance is required around these copper bars.

Therefore, the drawer proposal has a large number of copper bars in design and is difficult to install; because the clearance between the copper bars and the electrical clearance between the copper bars and the drawer shell needs to be considered, the whole volume of the whole drawer is large; meanwhile, because of the volume of the inspection equipment itself, when arranging the copper bars, the cost is increased because the inspection equipment needs to be avoided, which in turn leads to a longer use length of the copper bars.

In summary, the switch cabinet and the intelligent monitoring device on the market at present have high cost and large volume.

Disclosure of Invention

The content of the present application is intended to introduce concepts in a simplified form that are further described below in the detailed description. The section of this application is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

As a first aspect in the present application, in order to solve the technical problems of high cost and large volume of the switchgear and the control device of the switchgear, some embodiments of the present application provide an intelligent monitoring device, including:

a drawer body;

the circuit breaker is arranged on the drawer body, is connected to the wire inlet plug through a first circuit and is connected to the wire outlet plug through a second circuit;

the signal acquisition assembly comprises a plurality of signal acquisition units and is used for acquiring at least one of current, voltage and temperature information;

the control module is arranged on the drawer body and is electrically connected with all the signal acquisition units and the circuit breaker.

In the application, the signal acquisition unit is used for acquiring analog signals of related quantity, and the analog signals do not need to be directly converted into digital signals which can be directly read by the singlechip. Therefore, the signal acquisition unit does not integrate a part for calculating and processing analog signals, but rather is a functional module for analyzing the analog signals and converting the analog signals into specific information such as required voltage, current, temperature and the like, and the functional module is integrated on the control module, so that the volume of the signal acquisition unit is smaller. The control module is a functional module for information calculation, which integrates a part for analog signal processing, and although the volume of the control module is increased, only a part of the volume in the drawer is increased, and the problem that an input port and an output port for connecting copper bars are required to be configured for the control module is not involved, so that the volume of the whole drawer can be reduced.

Meanwhile, since the signal acquisition unit only needs to detect an initial analog quantity, in practice, the signal acquisition unit is directly attached to the first circuit or the second circuit, and does not greatly affect the arrangement of the first circuit and the second circuit. Therefore, when the first circuit and the second circuit are formed, the uneconomical wiring problem is planned without considering the volume of the signal acquisition unit assembly, so that the cost can be reduced.

The shape of the signal acquisition unit is different from that of the initial signal to be detected, and the current signal acquisition unit is generally a coil winding and is required to be sleeved on a circuit to be detected;

for a voltage detector, it only needs to have two distinct contact points with the circuit being detected;

for the temperature detector, it only needs to be attached to the circuit being detected. However, the shape of the copper bars is basically fixed; for this reason, when the signal acquisition unit is installed on the circuit, the copper bar at the installation position may need to be changed, which may lead to inconsistent specifications of the produced product and reduce the production efficiency. For this reason, the application provides following technical scheme:

further, the device also comprises a sampling piece, and a plurality of signal acquisition units are integrated on the sampling piece.

All the signal acquisition units are integrated on the sampling piece, so that the shape of the sampling piece is only required to be made to conform to the shapes of different signal acquisition units, and the rest of copper bars forming the first circuit and the second circuit do not need to be changed substantially, so that the copper bars forming the first circuit or the second circuit can be produced in advance even in the research and development stage during actual production. For example, item a requires 5 signal acquisition units and item B requires 4 signal acquisition units, but the specific signal acquisition unit type has not been determined. However, since it can be determined that the signal acquisition units are integrated on the sampling member, the structure of the sampling member is not changed due to the change in the number of signal acquisition units, and thus the remaining copper bars constituting the first circuit and the second circuit are not affected by the change in the signal acquisition units. Therefore, the factory can directly produce or customize corresponding copper bars first, and further the production efficiency of products can be increased.

Further, the sampling member is disposed on the first circuit.

Further, the first circuit includes a connector, one end of the connector is connected to the incoming plug, the other end of the connector is connected to the circuit breaker, and the sampling member is arranged at the end of the connector.

The sampling piece is located the tip of connecting piece, can avoid the sampling piece to differentiate two parts with the connecting piece, and then lead to the connecting piece structure to be further complicated. Thus, the sampling member is only one part of the end extension of the connecting member, and the design is simpler.

Further, the sampling member is disposed on the second circuit.

Further, the sampling piece is located at any end of the copper bar.

Further, the sampling piece is located the one end that copper bar and circuit breaker are connected.

Further, the sampling piece is located at one end of the copper bar, which is connected with the outlet plug.

Further, the sampling piece is arranged on the copper bar and is positioned at one end connected with the outlet plug.

The sampling piece sets up the tip at the copper bar, then the copper bar of connecting circuit breaker and outlet plug can not need split into several sections because of the sampling piece to the quantity of copper bar is few, and production process reduces, and the redesign of sampling piece style, structure is few to the influence of copper bar.

Further, the signal acquisition assembly comprises a current signal acquisition unit, and the current signal acquisition unit is a signal acquisition part of the milliamp-level current transformer.

The working principle of the milliamp-level current transformer is the same as that of the traditional transformer, only a winding is manufactured by selecting a smaller wire diameter, and the output induced current is milliamp-level, so that the volume of the signal acquisition assembly can be further reduced due to the fact that the number of turns of the coil is large, but the wire diameter is small and the volume is smaller. And because the current of milliamp level is safer, no need to dispose very large protection device for protecting it. Only the protection circuit part needs to be integrated in the control module. Compared with the traditional protection circuit of the current transformer, the protection circuit part integrated in the control module has smaller volume.

Further, the sampling element is disposed on the first circuit or the second circuit, or the sampling element is integrated on the first circuit or the second circuit, forming a component of the first circuit and the second circuit.

In order to solve the problem that intelligent circuit breaker can't realize intelligent control through detecting electric current, voltage and temperature of the circuit of circuit breaker, signal acquisition subassembly includes current signal acquisition unit, voltage signal acquisition unit and temperature signal acquisition unit.

The signal acquisition component provided by the application can synchronously complete the detection of temperature, current and voltage, so that the intelligent control of the circuit breaker is provided, and the support of relevant detection data is provided.

Further, the current signal acquisition unit is a mutual inductance coil sleeved on the sampling piece.

As a second aspect of the present application, in order to solve the technical problems of high cost and large volume of the switchgear and the control device of the switchgear, some embodiments of the present application provide a switchgear, including an intelligent monitoring device as described above.

To sum up: the application provides an intelligent monitoring device with small volume and low cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application.

In addition, the same or similar reference numerals denote the same or similar elements throughout the drawings. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.

In the drawings:

fig. 1 is a perspective view of a smart detection device in embodiment 1;

fig. 2 is a top view of the smart detection device in embodiment 1;

FIG. 3 is a top view of the intelligent detection device in embodiment 2;

fig. 4 is a schematic structural view of a circuit breaker and an incoming plug connection portion in embodiment 2;

FIG. 5 is a front view of the structure shown in FIG. 4;

fig. 6 is a front view of the connector in embodiment 2;

fig. 7 is a top view of the smart detection device in embodiment 3;

fig. 8 is a perspective view of the intelligent detecting device in embodiment 3, when the sampling member is disposed near the circuit breaker;

FIG. 9 is a perspective view of the intelligent detecting apparatus in example 3, when the sampling member is disposed near the outlet plug;

FIG. 10 is a front view of the sample member and the detection assembly in example 4;

fig. 11 is a cross-sectional view of fig. 10.

Example 1:

100. an intelligent monitoring device;

101. a drawer body; 1011. a wire inlet plug; 1012. an outlet plug;

102. a circuit breaker;

103. a signal acquisition assembly;

104. a control module;

105. a first circuit; 1051. a connecting piece;

106. a second circuit; 1061. a copper bar;

107. sampling a sample piece;

the implementation is as follows:

201. a drawer body; 2011. a wire inlet plug; 2012. an outlet plug;

202. a circuit breaker;

203. a signal acquisition assembly;

205. a first circuit; 2051. a connecting piece; 2051a, a connecting rod; 2051b, a first connection post; 2051c, a second connection post;

207. sampling a sample piece;

example 3:

301. a drawer body; 3011. a wire inlet plug; 3012. an outlet plug;

302. a circuit breaker;

305. a first circuit;

306. a second circuit; 3061. a copper bar;

307. sampling a sample piece;

the implementation is as follows:

403. a signal acquisition assembly; 4031. a current signal acquisition unit; 4032. a voltage signal acquisition unit; 4033. a temperature signal acquisition unit;

407. sampling a sample piece;

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

It should be noted that, for convenience of description, only the portions related to the present utility model are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1: referring to fig. 1 to 2:

the intelligent monitoring device 100 comprises a drawer body 101, a circuit breaker 102, a signal acquisition component 103 and a control module 104. Wherein the drawer body 101 is configured with a receiving cavity that receives the circuit breaker 102 and the signal acquisition assembly 103. The circuit breaker 102 is a common molded case circuit breaker 102, which may be an NSX molded case circuit breaker manufactured by schneider electric company. The control module 104 can control the on-off state of the circuit breaker 102, and the circuit breaker 102 is connected to the incoming line plug 1011 through the first circuit 105 and connected to the outgoing line plug 1012 through the second circuit 106; in practice, the incoming plug 1011 is connected to the distribution bus of the switchgear and the outgoing plug 1012 is connected to the consumer of electricity, so the circuit breaker 102 is on-off, i.e. the switch cabinet is controlled to supply power to the consumer. The signal acquisition component 103 comprises a plurality of kinds of signal acquisition units; the control module 104 is used for processing analog signals generated by various signal acquisition units, and the control module 104 is connected with the signal acquisition units through signal wires; the control module 104 is also connected to the circuit breaker 102 by a signal line.

In this way, the signal acquisition unit sends the acquired analog signal to the control module 104, and the control module 104 analyzes and monitors the analog signal to control whether the circuit breaker 102 is on or off.

The analog signal is an initial signal acquired by the signal acquisition unit, for example, the existing mutual inductance current signal acquisition unit is used for sleeving a mutual inductance coil on a conductor to be detected, when the conductor to be detected is electrified, induced current is generated on the mutual inductance coil, the magnitude of the induced current can reflect the magnitude of passing current on the conductor, the induced current is the analog signal, and the induced current is converted into a digital voltage signal after being processed and can be read by the MCU. In this application, the analog signals generated by the signal acquisition unit are directly sent to the control module 104, and the analog signals are processed by the analog signal processing unit built in the control module 104. Thus, under the technical scheme that this application designed, signal acquisition unit only has the part of collecting the signal, and the analog signal processing part that does not have, so signal acquisition unit's volume is littleer.

More specifically, because the signal acquisition units are arranged at different positions of the first circuit 105 or the second circuit 106, the first circuit 105 and the second circuit 106 are disconnected continuously, or part of positions need to be changed according to the requirement of arranging the signal acquisition units, so that the specifications of the copper bars 1061 forming the first circuit 105 and the second circuit 106 are easily changed due to the number, the types and the arrangement positions of the signal acquisition units, which is not beneficial to standardized production.

For this purpose, several signal acquisition units are integrated on a sampling element 107, the sampling element 107 being connected to the first circuit 105 or to the second circuit 106.

More specifically: the first circuit 105 includes a connection member 1051, one end of the connection member 1051 is connected to the incoming plug 1011, and the other end is connected to the circuit breaker 102, wherein the connection member 1051 is made of a conductive structure. The second circuit 106 includes a copper bar 1061, one end of the copper bar 1061 being connected to the incoming plug 1011 and the other end being connected to the circuit breaker 102.

Referring to fig. 3 to 4, in embodiment 2, a sampling member 207 is disposed on a first circuit 205.

Referring to fig. 3, in the switchgear, since the inlet plug 2011 is located on the drawer body 201, the position of the inlet plug 2011 is changed more conveniently, so the space between three phases of electricity of the distribution bus can be determined by the space between three phases of electrical interfaces of the inlet plug 2011; however, the spacing and type of the three-phase power on the circuit breaker 202 is related, so the position of the three-phase power on the inlet plug 2011 and the position of the three-phase power on the circuit breaker 202 may not correspond, and the style and structure of the connection 2051 may also vary somewhat.

Referring to fig. 3, when the positions of the three-phase sockets on the circuit breaker 202 and the positions of the three-phase sockets of the line plug 2011 correspond to each other.

The connection 2051 is directly connected to the circuit breaker 202, with the sampling member 207 disposed at either end of the connection 2051. As shown in fig. 3, the sampling member 207 is positioned on the connection 2051 near one end of the circuit breaker 202; that is, the sampling member 207 forms a part of the connection member 2051, or the sampling member 207 is connected to the sampling member 2051.

Referring to fig. 4, when the spacing of the distribution bars of the switchgear and the spacing of the connection locations on the circuit breaker 202 are not in a corresponding or consistent relationship with each other. For example, the three-phase power of the distribution bus is arranged transversely, and the connection positions of the three-phase power plug interfaces on the circuit breaker 202 are arranged longitudinally, so that the connection piece 2051 for connecting the line inlet 2011 and the circuit breaker 202 is arranged obliquely.

Referring to fig. 5, the connection piece 2051 includes a connection rod 2051a, a first connection column 2051b, and a second connection column 2051c, the first connection column 2051b and the second connection column 2051c are connected to the circuit breaker 202 and the inlet plug 2011, respectively, the sampling piece 207 is provided on the first connection column 2051b or the second connection column 2051c, or the sampling piece 207 is configured as a part of the first connection column 2051b or the second connection column 2051 c. Because the three-phase electrical junction interfaces of the circuit breaker 202 are arranged longitudinally, the three-phase electrical sockets of the inlet plug 2011 are arranged transversely, but there may also be an interface that can be brought into register with each other, for which the connection 2051 may be constructed as a straight rod.

It can be seen that the first circuit 205 is only the part for connection between the circuit breaker 202 and the inlet plug 2011, and that the position for arranging the various signal acquisition units, or the sampling member 207 for carrying the signal acquisition units, can be constructed, regardless of the change in its structure.

Referring to fig. 7 to 9, in embodiment 3, a sampling member 307 is disposed on the second circuit 306.

Embodiment one: referring to fig. 7 and 8, the sampling member 307 is located at one end of the copper bar 3061 to which the circuit breaker 302 is connected. Specifically, the sampling member 307 is disposed at the interface position of the circuit breaker 302 connected to the copper bar 3061, and the current flowing from the circuit breaker 302 to the copper bar 3061 needs to pass through the sampling member 307, so that the signal acquisition unit disposed on the sampling member 307 can collect the corresponding analog signal.

Embodiment two: referring to fig. 7 and 9, the sampling member 307 is located at one end of the copper bar 3061 where it is connected to the outlet plug 3012. Specifically, the sampling member 307 is disposed at the interface position of the outlet plug 3012 connected to the copper bar 3061, and thus the current from the circuit breaker 302 to the outlet plug 3012 needs to pass through the sampling member 307, so that the signal acquisition unit located on the sampling member 307 can collect the corresponding analog signal.

In combination with embodiments 1 to 3, it can be seen that the signal acquisition unit of the signal acquisition component may be disposed at any position of the first circuit and the second circuit. Or a sampling member for arranging the signal acquisition unit may be provided at any position of the first circuit and the second circuit.

Referring to fig. 10 to 11, example 4:

the signal acquisition component 403 includes a current signal acquisition unit 4031, a voltage signal acquisition unit 4032, and a temperature signal acquisition unit 4033. More specifically, a structure in which the signal acquisition assembly 403 is integrated with the sampling member 407 is provided below.

The current signal collecting unit 4031 is a mutual inductance coil, and in this embodiment, the current signal collecting unit 4031 is a milliamp-level current transformer, and the current passing through the inside is milliamp-level. The current signal acquisition unit 4031 is sleeved on the sampling member 407, the voltage signal acquisition unit 4032 is constructed into a ring structure, and the voltage signal acquisition unit 4032 has at least two different sampling points on the sampling member 407; the temperature signal acquisition unit 4033 is attached to the sampling member 407 so as to take up the sampling member, and can be used for the voltage signal acquisition unit 4032 and the temperature signal acquisition unit 4033 for the relevant signal acquisition.

In the present embodiment, the sampling member 407 is configured in a cylindrical structure, and in the remaining embodiments, the sampling member 407 may be configured in the remaining shape. The sampling member 407 has a screw hole formed in an end thereof, and is connected to an arbitrary position of the first circuit or the second circuit via the screw hole. In an embodiment, the sampling member 407 may be connected to the first circuit or the second circuit by screwing, welding, fastening, or the like.

Embodiment 5, after any of embodiments 1 to 4 are combined, is applied to a switch cabinet.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the utility model in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the utility model. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.

Claims (9)

1. An intelligent monitoring device, characterized by comprising:

a drawer body;

the circuit breaker is arranged on the drawer body, is connected to the wire inlet plug through a first circuit and is connected to the wire outlet plug through a second circuit;

the signal acquisition assembly comprises a plurality of signal acquisition units and is used for acquiring at least one of current, voltage and temperature information;

the control module is arranged on the drawer body and is electrically connected with all the signal acquisition units and the circuit breaker.

2. The intelligent monitoring device of claim 1, wherein: the device also comprises a sampling piece and a plurality of signal acquisition units integrated on the sampling piece.

3. The intelligent monitoring device of claim 2, wherein: the sampling member is disposed on the first circuit.

4. The intelligent monitoring device of claim 2, wherein: the first circuit comprises a connecting piece, one end of the connecting piece is connected to the incoming line plug, and the other end of the connecting piece is connected to the circuit breaker; the sampling member is disposed at an end of the connecting member.

5. The intelligent monitoring device of claim 2, wherein: the sampling member is disposed on the second circuit.

6. The intelligent monitoring apparatus of claim 5, wherein: the second circuit comprises a copper bar, one end of the copper bar is connected to the incoming line plug, the other end of the copper bar is connected to the circuit breaker, and the sampling piece is located at any one end of the copper bar.

7. The intelligent monitoring device of claim 6, wherein: the signal acquisition component comprises a current signal acquisition unit, and the current signal acquisition unit is a signal acquisition part of a milliamp-level current transformer.

8. The intelligent monitoring apparatus of claim 1, wherein the sampling member is disposed on the first circuit or the second circuit, or the sampling member is integrated on the first circuit or the second circuit, forming an integral part of the first circuit and the second circuit.

9. A switchgear characterized by comprising an intelligent monitoring device as claimed in any of claims 1-8.