CN201966608U - Circuit configuration structure with direct-current bus pole changing - Google Patents

Abstract

The utility model discloses a circuit configuration structure with direct-current bus pole changing, which comprises an I-1 bus and an I-2 bus, wherein a DL1-1 direct-current knife switch, a DL1-2 direct-current knife switch are respectively connected between the I-1 bus and the I-2 bus, and the I-1 bus and the I-2 bus are respectively connected with a B-section bus and an A-section bus. In the utility model, the labor efficiency is greatly improved, the labor intensity is lightened, the knife switch can be controlled manually and also can be controlled by a long-distance PLC (Programmable Logic Controller), and the controlling level is improved.

Description

The configuration circuit structure of dc bus change poles

Technical field

The utility model relates to a kind of configuration circuit structure of power line DC bus change poles of direct-flow electricity utilization apparatus.

Background technology

DC power supply has positive and negative electrode, and the polarity of direct-flow electricity utilization apparatus is also fixed generally speaking.In the ordinary course of things, only need to check accurate positive and negative bus position when direct-flow electricity utilization apparatus equipment is carried out outside bus bar configuration, carry out installation and get final product.But the positive and negative electrode of arts demand power consumption equipment is regularly exchanged sometimes, if the mode that at this moment adopts dismounting, replacing that positive and negative bus is installed is changed polarity, will increase difficulty of construction greatly, the process complexity, use duration, thereby influence production obviously is unpractical.Therefore need a kind of configuration structure of changing positive and negative bus polarity easily.

Summary of the invention

The technical problems to be solved in the utility model is: the configuration circuit structure that a kind of new DC bus change poles is provided, need not dismantle bus with the transposing that realizes the positive and negative polarity of bus, reduce the change poles time, enhance productivity, overcome dismounting, the positive and negative bus process complexity of replacing installation that prior art exists, use duration, thus deficiencies such as influence production.

In order to address the above problem, the utility model is taked following technical scheme: it comprises I-1 bus, I-2 bus, be connected DL1-1 direct current knife switch, DL1-2 direct current knife switch respectively between rectifier transformer and I-1 bus, I-2 bus, I-1 bus, I-2 bus are connected with B section bus, A section bus respectively.

Operation principle of the present utility model: knife switch DL1-1, DL1-2 are responsible for negative pole bus break-make, and knife switch DL2-1, DL2-2 are responsible for the break-make of positive electrode bus.DL1-1, DL2-2 establish chain control, the while break-make, and in like manner DL1-2, DL2-1 also establish chain control, simultaneously break-make.Positive electrode bus II-1, II-2 and negative pole bus I-1, I-2 have mutual interface point at the knife switch secondary side, are communicated with aluminium sheet.

During ordinary production, knife switch DL1-1, DL2-2 closure, DL1-2, DL2-1 disconnect, and at this moment the power supply of drawing from rectifier cabinet is (+) polarity just at A section bus, is negative (-) polarity on B section bus, supplies with process equipment and produces.When technological requirement transposing electric power polarity is that A section bus changes negative pole into, when B section bus changes positive pole into, can disconnect knife switch DL1-1, DL2-2 earlier, closed then DL1-2, DL2-1, just to switch into A section bus be negative (-) polarity to the power supply of sending from rectifier cabinet like this, be (+) polarity just on the B section bus, so far, electric power polarity is switched and is finished.

The beneficial effects of the utility model are: with in the past by the interim hand disassembly bus of workman, the structure that on-the-spot then reversed polarity is again installed is compared, new bus-bar collocation structure can disposablely be finished all installation tasks when construction, no longer need to dismantle repeatedly bus after the operation, only the direct current knife switch of break-make switching correspondence gets final product as requested, has improved efficiency greatly, alleviated labour intensity, knife switch both can manually be controlled, and also can pass through remote PLC control, had improved controlling level.

Description of drawings

Fig. 1 is an electrical connection logic theory schematic diagram of the present utility model.

Embodiment

Embodiment of the present utility model: the utility model changes the configuration mode that positive and negative in the past bus is respectively established a direct current knife switch, on the bus of each polarity, divide two places that a direct current knife switch respectively is installed, its circuit connects as shown in Figure 1, be connected DL1-1 direct current knife switch, DL1-2 direct current knife switch respectively between rectifier transformer and I-1 bus, I-2 bus, I-1 bus, I-2 bus are connected with B section bus, A section bus respectively.

Claims (1)

1. the configuration circuit structure of a dc bus change poles, it comprises I-1 bus, I-2 bus, it is characterized in that: be connected DL1-1 direct current knife switch, DL1-2 direct current knife switch respectively between rectifier transformer and I-1 bus, I-2 bus, I-1 bus, I-2 bus are connected with B section bus, A section bus respectively.

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