WO2011035620A1

WO2011035620A1 - Capacitance compensation transfer switch

Info

Publication number: WO2011035620A1
Application number: PCT/CN2010/074489
Authority: WO
Inventors: 戴志勇; 陆伯帅
Original assignee: 常州市默顿电气有限公司
Priority date: 2009-09-28
Filing date: 2010-06-25
Publication date: 2011-03-31
Also published as: CN101667733A; CN101667733B

Abstract

A capacitance compensation transfer switch comprises a dissipation base (1), a thyristor module (2), and a circuit board (3-1). Dissipation fins (1-1) and a mounting bedplate (1-2) are fixed on the dissipation base. The output terminal of the circuit board is electrically connected to the control terminal (2-1) of the thyristor module. The radiation base is provided with a connecting bracket (1-4) in the middle and two mounting pins (1-3) in the bottom. The radiation fins (1-1) are disposed on the connecting bracket in the middle of the radiation base. T-shaped grooves are disposed on the upper surface and two outside surfaces of the mounting bedplate and the outside surfaces of the mounting pins. The thyristor module is fixed to the mounting bedplate. The capacitance compensation transfer switch further comprises a control box body (3). The circuit board is disposed in the control box body, or the circuit board is drilled through the control box body and the two ends of the circuit board are extended out of the control box body. The two ends of the control box body or the two extended ends of the circuit board are fixed to the sides of the mounting bedplate and the mounting pin. The capacitance compensation transfer switch is convenient to mount, and has good radiating effect and high reliability.

Description

Capacitor compensation switching switch

Technical field

The present invention relates to a capacitive compensation switching switch.

Background technique

Capacitor w Tapping switches are widely used. For example, they can be used in low-voltage reactive power compensation devices. Fast zero-crossing switching of low-voltage shunt capacitors can achieve no inrush current, no spark, and no noise in working conditions. The existing capacitor W tastes the switch package ^: hot film, three sets of controllable stone modules and three sets of trigger modules, because three sets of controllable stone modules and three sets of trigger modules are installed on the mounting table of the heat sink On the board, there are many parts installed on the mounting plate of the heat sink, so the installation is inconvenient, the space is large, the heat dissipation effect is poor, and the thyristor is easily damaged by overheating; and the trigger module is exposed to the air, which is easy to cause triggering. The module is wet and the reliability of the trigger module is low.

Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to provide a capacitor compensation switching switch which is not only easy to install, has a good heat dissipation effect, and is highly reliable.

In order to achieve the above object, the technical solution of the present invention is: a capacitor w taste switching switch, comprising: a hot base, a controllable stone module and a line if each board has a heat sink and an upper portion mounted thereon The output end of the circuit board is electrically connected to the control end of the thyristor module; the heat dissipation base has a middle connecting bracket and two lower mounting legs, and the connecting bracket in the middle of the heat dissipation base has a heat sink The heat sink on both sides of the connecting bracket extends in a horizontal direction, and the heat sink on the lower side of the connecting bracket extends in a vertical direction; the upper surface of the mounting table has two first τ-shaped grooves, and the two mounting plates Each of the outer side surfaces has a second τ-shaped groove, and the outer sides of the two mounting legs each have a third τ-shaped groove; the thyristor module is fixedly connected by fasteners in the two first τ-shaped grooves Mounting the platen; further comprising a control box body, the circuit board is installed in the control box body or the circuit board passes through the control box body and both ends extend out of the control box body; two ends of the control box body or two of the circuit board Extending through the second end of τ-groove side surface of the mounting platen and a fastener τ third groove type mounting leg fixedly attached at the side of the mounting platen and the side surface of ^^ Ann.

The bottom surfaces of the two mounting feet each have a fourth τ-shaped groove.

Each fin has a heat dissipation rib on both sides.

The connecting bracket in the middle of the heat dissipating base has a waist circular through hole. A protruding end of the circuit board is provided with a PCB terminal, and the PCB terminal is located outside the control box.

A heat conductive silicone layer is disposed between the mounting platen of the heat dissipation base and the thyristor module.

The positive effect of the invention is: Since only the thyristor module is mounted on the mounting plate of the heat dissipation base, the installed parts are few, so the installation is convenient, the structure is compact, and the heat dissipation base occupies a small space, and the heat dissipation effect is good. It is not easy to cause the thyristor to overheat and be damaged; and since the invention further comprises a control box body, and the control box body is mounted on the side of the heat dissipation base, and the circuit board is installed in the control box body or the circuit board passes through the control box body and extends at both ends Out of the control box, but the main body of the circuit board is also set in the control box body, so the circuit board is not easy to cause moisture and high reliability.

DRAWINGS

1 is a front elevational view showing the structure of a capacitor W-type switching switch of the present invention;

Figure 2 is a plan view of Figure 1;

Figure 3 is a left side view of Figure 1;

Figure 4 is a cross-sectional view taken along line A-A of Figure 2;

Figure 5 is a schematic view showing the structure of the heat dissipation base;

Figure 6 is an enlarged view of a portion B in Figure 5;

Figure 7 is a perspective view of the controllable stone module of the present invention;

Figure 8 is a perspective view of the terminal block of the thyristor module of the present invention;

9 is a perspective view of the thyristor module terminal fastening screw of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1, 2, 3, 4, 5, 6, 7, 8, and 9, a capacitor compensation switching switch includes a heat dissipation base 1, a thyristor module 2, and a circuit board 3-1, and the heat dissipation The base 1 has a heat sink 1-1 and an upper mounting platen 1-2, and the output end of the circuit board 3-1 and the control end of the thyristor module 2

The heat-dissipating base 1 has a connecting bracket 1-4 in the middle portion and two mounting legs 1-3 in the lower portion, and the connecting bracket 1-4 in the middle of the heat-dissipating base 1 has a heat sink 1-1. The fins 1-1 on both sides of the connecting bracket 1-4 extend in a horizontal direction, and the fins 1-1 on the lower side of the connecting bracket 1-4 extend in a vertical direction; the upper surface of the mounting board 1-2 has two a first T-shaped groove 1-2-1, each of the two outer side surfaces of the mounting platen 1-2 has a second T-shaped groove 1-2-2, and the outer sides of the two mounting legs 1-3 Each has a third T-shaped slot 1-2-3; the thyristor module 2 is fixedly connected to the mounting platen 1-2 through the fasteners 9 of the two first T-shaped slots 1-2-1; Also including a control box 3, the circuit board

3- 1 is installed in the control box body 3 or the circuit board 3-1 passes through the control box body 3 and both ends protrude outside the control box body 3; two ends of the control box body 3 or two of the circuit board 3-1 The protruding ends are fixedly connected by the fasteners 9 in the second T-shaped groove 1-2-2 on the side of the mounting platen 1-2 and the third T-shaped groove 1-3-3 on the side of the mounting foot 1-3. Install the sides of the platen 1-2 and the mounting plate 1-3. As shown in FIG. 1, 3, 4, 5, and 6, in order to increase the flexibility of the mounting of the control box body 3 and the line if boards 3-1, multi-faceted mounting can be realized, and the bottom surfaces of the two mounting feet 1-3 Each has a fourth T-shaped slot 1-3-4. Of course, the two ends of the control box body 3 or the two protruding ends of the circuit board 3-1 can also pass through the two fourth sides of the bottom surface of the mounting foot 1-3. The fasteners 9 in the T-slots 1-3-4 are fixedly attached to the bottom surface of the mounting feet 1-3.

As shown in FIG. 1, 4, and 5, in order to further increase the heat dissipation area of the heat dissipation base 1, the heat dissipation effect is good, and the reliability of use of the present invention is improved, and the heat dissipation fins 1-1 are provided on both sides of each heat sink 1-1. 1.

As shown in FIG. 1, 4, and 5, in order to save the substrate of the heat dissipation base 1, the production cost is reduced, and at the same time, the heat dissipation channel can be further used to further improve the heat dissipation effect, and the connection bracket 1-4 in the middle of the heat dissipation base 1 has a waist. Round through hole 1-4-1.

As shown in Figures 1, 2, and 4, in order to make the circuit board 3-1 and the second T-shaped slot 1-2-2 on the side of the mounting platen 1-2 and the third T-shaped slot 1 on the side of the mounting leg 1-3 -3-3 insulation at the joint to avoid signal interference, and further ensure the firm installation of the control box 3 or the circuit board 3-1. The circuit board is provided with an insulating column 8, which is fastened in the fastening Pieces, 9 ji. ^ ' "

As shown in FIG. 1, 2, 3, and 4, in order to reduce the wear between the signal line electrically connected to the circuit board 3-1 and the heat dissipation base 1 and enhance the safety, the insulating column 8 An insulating spacer 7 is provided between the side of the mounting platen 1-2.

As shown in FIG. 1, 2, 3, and 4, in order to facilitate the electrical connection between the PCB terminal of the circuit board 3-1 and the peripheral control circuit, and convenient installation and maintenance, a PCB is mounted on one extended end of the circuit board 3-1. Terminal 4, and the PCB terminal 4 is located outside the control box 3.

The bottom surface of the thyristor module ² of the present invention and the surface of the mounting platen 1-2 of the heat dissipation base 1 tend to have a certain degree of unevenness, so that the two cannot be completely closed, and thus the mounting plate 1 of the heat dissipation base 1 is -2 and the thyristor module 2 have a layer of thermal grease, the thermal grease layer fills the gap between the thyristor module 2 and the mounting plate 1-2 of the heat sink base 1, thereby increasing the effective contact area The heat dissipation effect is further improved, and the stable operation of the thyristor module 2 is ensured.

As shown in FIG. 1, 2, 4, 7, 8, and 9, the thyristor module 2 in the capacitor compensation switching switch of the present invention uses a bidirectional thyristor, and passes two unidirectional thyristors. The connecting piece 5 is connected in reverse parallel by the fastening screw 6. When in use, the output end of the peripheral control circuit is electrically connected to the PCB terminal 4 of the circuit board 3-1, and then the capacitor W is switched to the load and electrically connected to the load. .

Claims

Claim

1. A capacitor W tastes a switch, including a hot base (1), a thyristor module (2) and a circuit board (3-1), and the heat dissipation base (1) has a heat sink (1-1) And an upper mounting platen (1-2), the output end of the circuit board (3-1) is electrically connected to the control end (2-1) of the thyristor module (2);

a. The heat dissipation base (1) has a middle connection bracket (1-4) and a lower two mounting legs (1-3), and the connection bracket (1-4) in the middle of the heat dissipation base (1) has Heat sink ( 1-1 ), the heat sink (1-1) on both sides of the connecting bracket (1-4) extends horizontally, and the heat sink (1-1) on the lower side of the connecting bracket (1-4) is vertical. Stretch

b. The upper surface of the mounting platen (1-2) has two first T-shaped grooves (1-2-1), and the two outer sides of the mounting platen (1-2) each have a first a second T-shaped groove (1-2-2), the outer sides of the two mounting feet (1-3) each have a third T-shaped groove (1-3-3);

c, the thyristor module (2) is fixedly connected to the mounting platen (1-2) through the fasteners (9) in the two first T-shaped grooves (1-2-1);

d. further comprising a control box body (3), the circuit board (3-1) being mounted in the control box body (3) or the circuit board (3-1) passing through the control box body (3) and extending at both ends Control box body (3); said control box body

(3) The two ends of the circuit board or the circuit board (3-1) pass through the second T-slot (1-2-2) on the side of the mounting platen (1-2) and the mounting feet (1- 3) The fasteners (9) in the third T-slot (1-3-3) on the side are fixedly attached to the side of the mounting platen (1-2) and the mounting feet (1-3).

The capacitance compensation switching switch according to claim 1, wherein: the bottom surfaces of the two mounting legs (1-3) each have a fourth T-shaped groove (1-3-4).

The capacitance compensation switching switch according to claim 1, wherein each of the fins (1-1) has a heat dissipating rib (1-1-1) on both sides.

The capacitor W-type switching switch according to claim 1 or 2 or 3, wherein: the connecting bracket (1-4) in the middle of the heat dissipating base (1) has a waist circular through hole (1- 4-1).

The capacitance compensation switching switch according to claim 1, characterized in that: between the two extended ends of the circuit board (3-1) and the side of the mounting platen (1-2) An insulating column (8) is provided between the sides of ^^ (1-3), and the insulating column (8) is fitted on the fastener (9).

The capacitance compensation switching switch according to claim 5, wherein an insulating piece (7) is disposed between the insulating column (8) and the side surface of the mounting platen (1-2).

The capacitor W-type switching switch according to claim 1 or 5 or 6, wherein: a protruding end of the circuit board (3-1) is provided with a PCB terminal (4), and the PCB terminal ( 4) Located outside the control box (3).

8. A capacitor W taste switching switch according to claim 1 or 2 or 3, wherein: A thermal grease layer is disposed between the mounting platen (1-2) of the heat sink base (1) and the thyristor module (2).