CN2419738Y - Thyristor current varying power device - Google Patents

Abstract

The utility model relates to a thyristor current-varying power device which makes the input of the alternating current power changed into the output of the direct current power. A radiator and pressing blocks positioned at both ends of the radiator are connected in series by a screw rod which is sheathed with an insulation sheath on the screw rod, thyristors are arranged between every two radiators, and an insulation pad is arranged between the radiator and the pressing blocks to form power component groups. Each of the power component groups is parallel mutually, is fixed between two connecting plates through nuts and the screw rod, and pressing screws and the pressing block are pressed on the insulation pad through one connecting plate. The integral bridge group is arranged at an air inlet side in an air channel arranged horizontally in a cabinet body, and is parallel to the air inlet. The thyristor current-varying power device has the advantages of simple structure, compact structure, easy installation and maintenance and good heat radiation effect.

Description

Thyristor unsteady flow power device

The utility model relates to a kind of thyristor unsteady flow power device, belongs to the device that the AC power input is transformed to direct current power output, comprises three-phase full-controlled bridge reversible and unidirectional type.

In the prior art, thyristor unsteady flow power device comprises the irreversible unsteady flow power device of the three-phase full-controlled bridge with six thyristors and has the reversible unsteady flow power device of three-phase full-controlled bridge of twelve earthly branches thyristor element.Its structure mainly is made up of thyristor, radiator, insulation cushion, air channel, blower fan, wind collecting unit, fast molten, busbar and cabinet etc., thyristor of two radiator folders is formed a thyristor unit, a power cell is made in per three thyristor unit, and between its each thyristor unit and two ends are equipped with insulation cushion.Two or four power cell horizontal positioned, from top to bottom be installed in the air channel that vertical is provided with in the cabinet, connect into three-phase full-controlled bridge irreversible unsteady flow bridge group or the reversible unsteady flow power bridge of three-phase full-controlled bridge group by busbar, the fast molten and/or busbar outside the air channel joins with AC power and DC load respectively in being arranged on cabinet then.The air channel links to each other with the blower fan that is installed in the cabinet top through wind collecting unit, and the cabinet below offers air inlet.During work, under the effect of blower fan, cooling air enters the air channel by air inlet, after the thyristor in the air channel is cooled off, discharges through wind collecting unit.The parts that this rating of set unit adopts are many, complex structure, and bridge group volume is big, the manufacturing cost height; Each power cell from top to bottom is installed in the air channel of vertical setting, the uniformity of influence heat radiation, busbar, fast molten being installed in outside the air channel can't obtain cooling, therefore limited the service efficiency of thyristor, general maximum rated output current can only reach 1200 peaces; After the power cell body is in place, carries out the bridge group and connect, and when certain thyristor damages, need pull down whole power cell body, just can finish the replacing of thyristor, installation, maintenance is very inconvenient.

The purpose of this utility model provides a kind of simple in structure, compact, is easy to install, safeguards, the thyristor unsteady flow power device of good heat dissipation effect is to save the space, to reduce cost, improve the service efficiency of thyristor.

The purpose of this utility model realizes by following technical solution.

A kind of thyristor unsteady flow power device, mainly form by thyristor, radiator, insulation cushion, air channel, blower fan, wind collecting unit, fast molten, busbar and cabinet, offer air inlet on the cabinet, the blower fan that is installed in cabinet top communicates on the air channel in wind collecting unit and cabinet.This device has the whole bridge group of being made up of radiator, thyristor, insulation cushion, housing pin, nut, screw rod, briquetting and connecting plate, the screw rod that is with insulating case on it is connected in series radiator mutually with the briquetting that is positioned at the radiator two ends, thyristor is installed between the radiator in twos, insulation cushion is installed between radiator and the briquetting is constituted a power component group, being parallel to each other between each power component group is fixed between two connecting plates by nut and screw rod, and housing pin is pressed on the insulation cushion through a plate and briquetting.This integral body bridge group is installed in the inlet air oral-lateral in the horizontally disposed air channel of being made up of two side shields, lower baffle plate and backboard in the cabinet, and is parallel to air intake vent.Radiator handle as bridge group input joins through busbar and AC power, and output radiator handle is through busbar, molten and busbar and DC load are joined soon.

Described whole bridge group, during as the reversible unsteady flow bridge of three-phase full-controlled bridge group, the busbar of cross structure group adopts conductive strips between the radiator handle.

The described busbar that is connected between radiator handle and fast the melting adopts conductive strips.

Described whole bridge group, its screw rod vertical is provided with, and each the power component group that is parallel to each other is fixed between its connecting plate up and down, and connecting plate and the briquetting of housing pin through being positioned at the top is pressed on the insulation cushion.

Described radiator is a copper radiator.

Air inlet on the described cabinet is opened in the top at its Qianmen, with corresponding position, air channel.

The advantage that the utility model is compared with prior art had is: 1. reduced the usage quantity of radiator and insulation cushion, and simple in structure, compact, saved the bridge group significantly and taken up space and manufacturing cost.2. whole bridge group has reduced the installation workload in cabinet, unclamps being connected between housing pin and radiator handle and the busbar, can realize the replacing of thyristor, is easy to install, safeguard.Particularly substitute the vertical placement of common busbar of part and power component group, make that the replacing of thyristor is more convenient with conductive strips with certain flexibility.3. all thyristors all are set in parallel in the inlet air oral-lateral in air channel, realized the parallel connection of thyristor air-supply, and heater element such as fast molten, busbar all can be installed in and obtain the heat radiation cooling in the air channel simultaneously, make thyristor rapid heat dissipation and evenly.The improvement of heat radiation cooling effect has improved the service efficiency of thyristor, and experiment shows that the maximum rated output current of this device can reach more than 1800 amperes.

Below in conjunction with accompanying drawing embodiment of the present utility model is discussed in detail.

Attached 1 is the structural representation of the utility model thyristor unsteady flow power device.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the rearview of Fig. 1.

Fig. 4 is the structural representation of the reversible unsteady flow bridge of the three-phase full-controlled bridge group of the utility model thyristor unsteady flow power device.

Fig. 5 is the left view of Fig. 4.

Fig. 6 is the circuit connection diagram of bridge group shown in Figure 4.

Fig. 7 is the structural representation of the irreversible unsteady flow bridge of the three-phase full-controlled bridge group of the utility model thyristor unsteady flow power device.

Fig. 8 is the left view of Fig. 7.

Fig. 9 is the circuit connection diagram of bridge group shown in Figure 7.

Embodiment 1:

The utility model thyristor unsteady flow power device as shown in Figure 1-Figure 3 is the reversible unsteady flow power device of three-phase full-controlled bridge, mainly by radiator 1, thyristor 2, insulation cushion 3, housing pin 4, nut 5, screw rod 6, briquetting 7, upper junction plate 8, lower connecting plate 9, air channel 11, cabinet 12, wind collecting unit 13, blower fan 14, molten 18, conductive strips 10,17 and busbar 15,16 are formed soon, radiator 1 is a copper radiator.Radiator 1, thyristor 2, insulation cushion 3, housing pin 4, nut 5, screw rod 6, briquetting 7, the whole bridge group that upper junction plate 8 and lower connecting plate 9 are formed, see Fig. 4, Fig. 5, be with the screw rod 6 vertical settings of insulating case on it, with 5 radiators 1 be positioned at its briquetting 7 up and down and be connected in series mutually, 4 thyristors 2 are installed in twos between the radiator 1, insulation cushion 3 is installed between radiator 1 and the briquetting 7 is constituted a power component group, be arranged in parallel between 3 power component groups, be fixed between upper junction plate 8 and the lower connecting plate 9 by nut 5 and screw rod 6, housing pin 4 is pressed on the insulation cushion 3 through upper junction plate 8 and briquetting 7, reaches to compress the required pressure of thyristor 2.Whole bridge group is installed in the inlet air oral-lateral in the horizontally disposed air channel of being made up of two side shield 11a, lower baffle plate 11b and backboard 11c in the cabinet 12 11, and is parallel to this air intake vent.Conductive strips 10 connect radiator handle 1a and form the bridge group, radiator handle 1a as bridge group power input joins through busbar 15 and the AC power outside the cabinet 12, as the radiator handle of bridge group power output end through conductive strips 17, be arranged on fast molten 18 in the air channel and busbar 16 joins with the DC load outside the cabinet 12, referring to Fig. 6, U, V, W are ac power input end among Fig. 6, and A is a DC load.The top at cabinet 12 Qianmens, with the corresponding position of 11 air intake vents, air channel on offer air inlet 12a, the upper end in the air channel 11 of the blower fan 14 that is installed in cabinet 12 tops in wind collecting unit 13 and cabinet communicates.

Embodiment 2:

The irreversible unsteady flow power device of the utility model thyristor unsteady flow power device-three-phase full-controlled bridge, the reversible unsteady flow power device of its overall structure and three-phase full-controlled bridge is identical, and difference only is the structure of its whole bridge group, as Fig. 7, shown in Figure 8.The screw rod 6 of vertical setting with 3 radiators 1 be positioned at its two briquettings 7 up and down and be connected in series mutually, two thyristors 2 are installed in twos between the radiator 1, insulation cushion 3 is installed between radiator 1 and the briquetting 7 is constituted a power component group, be arranged in parallel between 3 power component groups, be fixed between upper junction plate 8 and the lower connecting plate 9 by nut 5 and screw rod 6, housing pin 4 is pressed on the insulation cushion 3 through upper junction plate 8 and briquetting 7, forms the irreversible unsteady flow bridge of whole three-phase full-controlled bridge group.This integral body bridge group is installed in the inlet air oral-lateral in the horizontally disposed air channel 11 in the cabinet 12, and is parallel to this air intake vent.According to circuit connection diagram shown in Figure 9, join through the outer AC power of busbar 15 and cabinet 12 as the radiator handle 1a of bridge group power input, join through conductive strips 17, the DC load that is arranged on outside fast molten 18 in the air channel and busbar 16 and the cabinet 12 as the radiator handle of bridge group power output end.

During work, under the effect of blower fan 14, cooling air enters air channel 11 by air inlet 12a, in to all thyristors 2 realizations air-supply heat radiation in parallel cooling that is set in parallel in inlet air oral-lateral in the air channel 11, to the cooling of dispelling the heat of heater elements such as fast molten 18, the conductive strips 10,17 that are positioned at air channel 11 and busbar 15,16, then through wind collecting unit 13 discharges.When thyristor 2 that needs change to damage, owing to substitute the common busbar of part, only need unclamp housing pin 4, with radiator 1 segment distance that moves up, promptly replaceable thyristor with conductive strips.Because the minimizing that the bridge group is taken up space, bigger space is left in cabinet 12 bottoms, can be used to other devices such as installation and control system.

In the utility model thyristor unsteady flow power device, busbar is a general busbar of the prior art, and conductive strips are a kind of soft busbars with certain flexibility, and its trade name is conductive strips.

Claims (6)

1. thyristor unsteady flow power device, mainly by thyristor, radiator, insulation cushion, the air channel, blower fan, wind collecting unit, fast molten, busbar and cabinet are formed, offer air inlet on the cabinet, the blower fan that is installed in cabinet top communicates on the air channel in wind collecting unit and cabinet, it is characterized in that: have by radiator (1), thyristor (2), insulation cushion (3), housing pin (4), nut (5), screw rod (6), briquetting (7) and connecting plate (8), (9) the whole bridge group of Zu Chenging, the screw rod (6) that is with insulating case on it is connected in series radiator (1) mutually with the briquetting (7) that is positioned at radiator (1) two ends, thyristor (2) is installed between the radiator (1) in twos, insulation cushion (3) is installed between radiator (1) and the briquetting (7) is constituted a power component group, be parallel to each other between each power component group, be fixed on two connecting plates (8) by nut (5) and screw rod (6), (9) between, housing pin (4) is pressed on the insulation cushion (3) through a plate (8) and briquetting (7); This integral body bridge group is installed in the inlet air oral-lateral in the horizontally disposed air channel of being made up of two side shields (11a), lower baffle plate (11b) and backboard (11c) in the cabinet (12) (11), and is parallel to air intake vent; Join through busbar (15) and AC power as the radiator handle (1a) of bridge group input, join through busbar (17), fast molten (18) and busbar (16) and DC load as the radiator handle (1a) of bridge group output.

2. thyristor unsteady flow power device according to claim 1 is characterized in that: described whole bridge group, during as the reversible unsteady flow bridge of three-phase full-controlled bridge group, the busbar (10) of cross structure group adopts conductive strips between radiator handle (1a).

3. thyristor unsteady flow power device according to claim 1 and 2 is characterized in that: the described busbar (17) that is connected between radiator handle (1a) and fast molten (18) adopts conductive strips.

4. thyristor unsteady flow power device according to claim 1, it is characterized in that: described whole bridge group, its screw rod (6) vertical setting, each the power component group that is parallel to each other is fixed on is positioned between its up and down connecting plate (8), (9), connecting plate (8) and the briquetting (7) of housing pin (4) through being positioned at the top is pressed on the insulation cushion (3)

5. thyristor unsteady flow power device according to claim 1 is characterized in that: described radiator (1) is a copper radiator.

6. thyristor unsteady flow power device according to claim 1 and 2 is characterized in that: the air inlet (12a) on the described cabinet (12) is opened in the top at its Qianmen, with corresponding position, air channel (11).

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