CN220086650U

CN220086650U - Low-voltage distribution box

Info

Publication number: CN220086650U
Application number: CN202321736336.5U
Authority: CN
Inventors: 王世强; 许燕标
Original assignee: Xinjiang Shiqiang Energy Technology Co ltd
Current assignee: Xinjiang Shiqiang Energy Technology Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-11-24
Anticipated expiration: 2033-06-28

Abstract

The utility model relates to the technical field of distribution boxes, and provides a low-voltage distribution box which comprises a main loop module and a secondary loop controller connected with the main loop module; the secondary loop controller is provided with a plurality of functional terminals, a secondary loop is integrated in the secondary loop controller, and the secondary loop controller is connected with the main loop module through the functional terminals. The secondary circuit is integrated in the secondary circuit controller, the external circuit is connected with the external circuit through the peripheral functional terminal, and the external circuit is only connected with the corresponding functional terminal, so that the secondary circuit of the distribution box is simplified, the wiring time consumption of the distribution box is reduced, the circuit fault connection risk is reduced, the circuit is concise, the universality is strong, and the application value is good.

Description

Low-voltage distribution box

Technical Field

The utility model relates to the technical field of distribution boxes, in particular to a low-voltage distribution box.

Background

At present, a traditional low-voltage distribution box is generally formed by constructing a primary main circuit and a secondary control circuit according to a given control circuit diagram, and is mainly used for controlling water pumps and fans of residential buildings, industrial plants and the like, so that life and fire safety are guaranteed.

The specific secondary control loop is generally formed by combining components such as a contactor, a relay, a rotary switch, a button switch, a signal lamp, a wiring terminal, a connecting wire and the like, and as shown in fig. 1, the distribution box system can realize the on-off of the related coils KM1 and KM2 according to the logic of the secondary loop circuit.

However, the secondary wiring of the existing electric cabinet is complex, so that the consumed materials are more, the material cost and the labor cost are high, in addition, the production of the product is finished by depending on the strong working experience of staff and the corresponding standard operation flow, and the production efficiency of the product is low.

Disclosure of Invention

In order to solve the defect of complex wiring of the secondary control loop in the prior art, the utility model provides a low-voltage distribution box which comprises a main loop module and a secondary loop controller connected with the main loop module; the secondary loop controller is provided with a plurality of functional terminals, a secondary loop is integrated in the secondary loop controller, and the secondary loop controller is connected with the main loop module through the functional terminals.

In one embodiment, the main circuit module includes at least one set of circuit breakers QA, contactors QAC, and thermal relays FR in series.

In one embodiment, the plurality of functional terminals includes at least a NO terminal, an A1 terminal, a COM terminal, an FR terminal; the NO terminal is in signal connection with the contactor QAC and is used for detecting the working state of the contactor QAC; the terminal A1 and the terminal COM are 220V active output signals, and the terminal A1 and the terminal COM are respectively connected with a coil of the contactor QAC and are used for controlling the actuation or release of the contactor QAC; the FR terminal is connected with the thermal relay FR signal and is used for receiving the thermal relay FR action signal; the secondary circuit controller receives the thermal relay FR operation signal through the FR terminal, and controls the engagement or release of the contactor QAC through the A1 terminal and the COM terminal.

In one embodiment, the functional terminals further include SB and SS terminals for accessing the normally open and normally closed switches.

In one embodiment, the functional terminals further include 24V signal terminals, the 24V signal terminals for receiving a remote fire signal in response to fire control.

In an embodiment, the low-voltage distribution box further comprises a man-machine operation panel, wherein the man-machine operation panel is connected with the main loop module and the secondary loop controller, and the control of the main loop module and the secondary loop controller is realized through the man-machine operation panel.

In one embodiment, the low voltage distribution box further comprises a current detector connected with the main loop module and the secondary loop controller respectively to detect the current of the main loop module.

In an embodiment, the low-voltage distribution box further comprises a case, a through hole is formed in the case, the secondary circuit controller is arranged inside the case, and the functional terminal is connected with the current detector and the main circuit module through the through hole in a wiring mode.

In one embodiment, the secondary loop controller is model KZ-ZTX-1.

In one embodiment, the circuit breaker QA is model DZ47s 3P C, the contactor QAC is model CJX2s-2510, and the thermal relay FR is model JRS1 Ds-25.

Based on the above, compared with the prior art, the motor distribution box has the advantages that the secondary circuit is integrated in the secondary circuit controller, the external circuit is connected with the external circuit through the peripheral functional terminals, and the external circuit is only connected with the corresponding functional terminals, so that the secondary circuit of the distribution box is simplified, the wiring time consumption of the distribution box is reduced, the wrong connection risk of the circuit is reduced, the circuit is concise, the universality is strong, and the motor distribution box can be suitable for various scenes in the market.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

For a clearer description of embodiments of the utility model or of the solutions of the prior art, the drawings that are needed in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the utility model, and that other drawings can be obtained from them without inventive effort for a person skilled in the art; the positional relationships described in the drawings in the following description are based on the orientation of the elements shown in the drawings unless otherwise specified.

FIG. 1 is a schematic diagram of a secondary circuit of the prior art;

FIG. 2 is a schematic diagram of a main loop module according to the present utility model;

fig. 3 is a schematic diagram of a secondary loop controller according to the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model; the technical features designed in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that all terms used in the present utility model (including technical terms and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the present utility model belongs and are not to be construed as limiting the present utility model; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As shown in fig. 1, the secondary circuit controller in the prior art is composed of a K relay, an SB button, KM and KH passive contacts, an HG indicator lamp, a rotary switch, a KT time relay, and the like. When the distribution box works, the corresponding button of SB is required to be triggered, and the distribution box system can realize the on-off of the related coils KM1 and KM2 according to the logic of the secondary circuit. The on-off of the coil directly controls the contact of the QAC to be turned on and off, thereby realizing the running and stopping of the motor. When the motor fails, the corresponding contact KH of the FR device can change to act, and the contact of the QAC is disconnected according to the loop control logic, so that the motor stops running when the power is off. The existing electric cabinet is complex in secondary wiring, multiple in consumable materials and high in material cost and labor cost. The production of the product is finished by means of strong working experience of staff and corresponding standard working procedures. This also results in a lower production efficiency of the product.

The utility model provides a low-voltage distribution box, which is characterized in that: the primary loop module and the secondary loop controller are connected with the primary loop module; the secondary loop controller is provided with a plurality of functional terminals, a secondary loop is integrated in the secondary loop controller, and the secondary loop controller is connected with the main loop module through the functional terminals.

The secondary loop controller is internally integrated with a secondary loop and is used for controlling the state of the main loop, and an operator can directly control the secondary loop controller to control the secondary loop during specific operation, so that the control of the main loop is realized. The secondary circuit adopts a secondary circuit controller mode, the traditional complex wiring of the logic circuit is changed into the wiring of a black box, and the input and output architecture is clear and easy to understand.

As shown in fig. 2, the main circuit module includes at least one set of circuit breakers QA, contactors QAC, and thermal relays FR connected in series.

In particular, the main circuit module has at least one group, preferably, in this embodiment, the main circuit module has two groups, which specifically includes a circuit breaker QA1, a circuit breaker QA2, a contactor QAC1, a contactor QAC2, a thermal relay FR1 and a thermal relay FR2, where the circuit breaker QA1, the contactor QAC1 and the thermal relay FR1 are connected in series with the first motor to form a first branch circuit, and the circuit breaker QA2, the contactor QAC2 and the thermal relay FR2 are connected in series with the second motor to form a second branch circuit, and the first branch circuit and the second branch circuit are connected in parallel for controlling and protecting the motors.

The main circuit is not limited to the above-described circuit configuration of the main circuit, and may be other main circuits such as a general-purpose circuit breaker, a high-voltage motor, and the like, which require a control circuit.

As shown in fig. 3, the plurality of functional terminals include at least NO terminal, A1 terminal, COM terminal, FR terminal; the NO terminal is in signal connection with the contactor QAC and is used for detecting the working state of the contactor QAC; the terminal A1 and the terminal COM are 220V active output signals, and the terminal A1 and the terminal COM are respectively connected with a coil of the contactor QAC and are used for controlling the actuation or release of the contactor QAC; the FR terminal is connected with the thermal relay FR signal and is used for receiving the thermal relay FR action signal; the secondary circuit controller receives the thermal relay FR operation signal through the FR terminal, and controls the engagement or release of the contactor QAC through the A1 terminal and the COM terminal.

The NO terminal comprises a NO1 terminal and a NO2 terminal, and the NO terminal of the secondary loop is a passive normally open input point of the secondary loop controller;

wherein, the contact QAC1 and the contact QAC2 of the main circuit are respectively connected with the NO1 terminal and the NO2 terminal of the secondary circuit, the contact QAC1 and the contact QAC2 of the main circuit are respectively connected with the COM terminal, and the NO terminal is used for controlling the suction and release of the contact QAC1 and the contact QAC2 of the main circuit.

The A1 terminal comprises A1A 1 terminal and a 2A1 terminal, and the A1 terminal and the COM terminal are 220V active output signals;

the terminals 1A1 and 2A1 are connected to one ends of the contactors QAC1 and QAC2 of the main circuit, and the other ends of the contactors QAC1 and QAC2 are connected to the COM terminal to control the engagement and release of the contactors QAC1 and QAC 2.

The FR terminals comprise FR1 terminals and FR2 terminals, the FR1 terminals and FR2 terminals are connected with the thermal relays FR1 and FR2 of the main circuit, feedback signals are fed back to the thermal relays FR1 and FR2 of the main circuit, and the other ends of the thermal relays FR1 and FR2 of the main circuit are connected with the COM terminals.

The functional terminals also include a number of SB and SS terminals for accessing the normally open and normally closed switches.

In the implementation, SB and SS are passive input signals, are used for the contact signals of a button or a rotary switch, and are connected with normally open and normally closed keys at corresponding ports according to a control logic program established by a module, so that the operations of manual operation, manual stop, emergency stop and the like of the motor are realized.

The functional terminals also include 24V signal terminals, the 24V signal terminals for receiving a remote fire signal in response to fire control.

In specific implementation, the 24V signal terminal is an active input terminal signal, and when a remote fire control signal is input, the module control motor responds to fire control.

The low-voltage distribution box further comprises a man-machine operation panel, wherein the man-machine operation panel is connected with the main loop module and the secondary loop controller, and the control of the main loop module and the secondary loop controller is realized through the man-machine operation panel.

The low-voltage distribution box further comprises a current detector which is respectively connected with the main loop module and the secondary loop controller so as to detect the current of the main loop module.

When the current exceeds the preset value, the current triggers the current relay to act, and a protection signal is sent to the primary loop through the secondary loop controller according to the preset requirement of a user, so that the purpose of protection is achieved.

The low-voltage distribution box further comprises a case, a through hole is formed in the case, the secondary circuit controller is arranged inside the case, and the functional terminal is connected with the current detector and the main circuit module through the through hole in a wiring mode.

The secondary loop controller, the main loop module and the functional terminal are arranged in the box body, and the functional terminal is connected with the first current detector and the primary loop through the through hole.

It should be noted that, secondary circuit controller, main loop module and functional terminal are installed in the box, install ampere meter, pilot lamp, start-stop button on the chamber door, and the through-hole is reserved to box side or upper portion, makes things convenient for the outside wiring, and the size of box is 400mm 550mm 200mm.

Preferably, the secondary loop controller is KZ-ZTX-1, and a secondary loop controller of KZ-KZDZ may also be used.

Preferably, the circuit breaker QA is of the type DZ47s 3P C, the contactor QAC is of the type CJX2s-2510, the thermal relay FR is of the type JRS1 Ds-25, the fuse is of the type RT14 (RT 18), and the terminal is of the type TB-4503.

The types of the secondary circuit controller, the circuit breaker QA, the contactor QAC, the thermal relay FR, the fuse, and the connection terminal are not limited to the above, and a suitable type may be selected according to the circuit in actual use.

In summary, compared with the prior art, the wiring time of the low-voltage distribution box is reduced by 73%; the wiring personnel can be completed by basic workers without excessive technical instruction and training; the motor distribution box is simple in circuit and high in universality, and can be suitable for various scenes in the market.

In addition, it should be understood by those skilled in the art that although many problems exist in the prior art, each embodiment or technical solution of the present utility model may be modified in only one or several respects, without having to solve all technical problems listed in the prior art or the background art at the same time. Those skilled in the art will understand that nothing in one claim should be taken as a limitation on that claim.

Although terms such as primary loop module, secondary loop controller, functional terminals, etc. are used more herein, the possibility of using other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model; the terms first, second, and the like in the description and in the claims of embodiments of the utility model and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. A low voltage distribution box, characterized in that: the system comprises a main loop module and a secondary loop controller connected with the main loop module; the secondary circuit controller is provided with a plurality of functional terminals, a secondary circuit is integrated in the secondary circuit controller, and the secondary circuit controller is connected with the main circuit module through the functional terminals.

2. The low voltage distribution box of claim 1 wherein: the main circuit module comprises at least one group of circuit breakers QA, contactors QAC and thermal relays FR connected in series.

3. The low voltage distribution box of claim 2 wherein: the functional terminals at least comprise a NO terminal, an A1 terminal, a COM terminal and an FR terminal; the NO terminal is in signal connection with the contactor QAC for detecting the working state of the contactor QAC; the A1 terminal and the COM terminal are 220V active output signals, and the A1 terminal and the COM terminal are respectively connected with a coil of the contactor QAC and are used for controlling the suction or release of the contactor QAC; the FR terminal is in signal connection with the thermal relay FR for receiving the thermal relay FR action signal; the secondary circuit controller receives the thermal relay FR operation signal through the FR terminal and controls the engagement or release of the contactor QAC through the A1 terminal and the COM terminal.

4. The low voltage distribution box of claim 1 wherein: the functional terminals further comprise a plurality of SB terminals and SS terminals, wherein the SB terminals and the SS terminals are used for being connected with a normally open switch and a normally closed switch.

5. The low voltage distribution box of claim 1 wherein: the functional terminals also include 24V signal terminals for receiving a remote fire signal in response to fire control.

6. The low voltage distribution box of claim 1 wherein: the low-voltage distribution box further comprises a man-machine operation panel, wherein the man-machine operation panel is connected with the main loop module and the secondary loop controller, and the control of the main loop module and the secondary loop controller is realized through the man-machine operation panel.

7. The low voltage distribution box of claim 1 wherein: the low-voltage distribution box further comprises a current detector, and the current detector is respectively connected with the main loop module and the secondary loop controller so as to detect the current of the main loop module.

8. The low voltage distribution box of claim 7 wherein: the low-voltage distribution box further comprises a machine box, a through hole is formed in the machine box, the secondary circuit controller is arranged inside the machine box, and the functional terminal is connected with the current detector and the main circuit module through the through hole in a wiring mode.

9. The low voltage distribution box of claim 1 wherein: the model of the secondary circuit controller is KZ-ZTX-1.