KR900005887B1 - High-voltage - switch holding system - Google Patents

Abstract

The system holds and maintains state of solenoid-inserting type high voltage switch using a mechanical latch device. The system includes a hand-operated handle on the case, with an inner toggle spring; a driving shaft for separating or connecting contact point; a solenoid inserted in subsidiary case, linked by a link mechaninsm having the shaft and rotating disk; first toggle latch including first toggle lever (57) and link connecting plate (50) with latch lever (51) and semicircular latch cam (59); second toggle lever mechanism including latch releasing lever and second toggle lever (54).

Description

Method and device for maintaining dispersion of input state of solenoid input high pressure switch

1 is a front sectional view for showing the configuration of a conventional solenoid input high pressure switch.

2 is a side cross-sectional view of FIG.

3 is a plan view taken along the line A-A of FIG.

Figure 4 is a side cross-sectional view showing the operating state of the high-pressure switch (a) is a side cross-sectional view of the car cut-off state, (b) is a side cross-sectional view of the manual injection state, (c) is a side view of the automatic injection state.

5 is a side view of an open state maintaining apparatus constructed in accordance with the present invention.

6 is a side view of the input state maintaining apparatus configured according to the present invention.

Figure 7 is a plan view of the main portion showing a state in which the support and link connecting plate and the latch lever of the present invention is coupled.

* Explanation of symbols for main parts of the drawings

5: solenoid 5a: plunger

6: link 12: turntable

51: latch cover 52: fixed rotation shaft

53: tension spring 54: secondary toggle

55: latch surface 56: latch release lever

56 ': Link 56 ": Plate

57: primary toggle lever 57a: latch surface

58: link connecting plate 59: semicircular latch cam

59a: cam lever 59b: rotation shaft

60: trip coil

The present invention relates to a method and apparatus for maintaining a state of dispersion of a solenoid input high pressure switch.

In particular, the present invention provides a high-pressure switch for acquiring the input and open energy by the solenoid, wherein the closing spring is squeezed at the same time as the input of the solenoid, and the maintenance of the input state is performed as a mechanical latch mechanism. An apparatus and method are provided.

Conventional solenoid-type high-pressure switch is a holding coil type that continuously supplies current to the solenoid to maintain the input state continuously after the input is completed. It has a spring toggle mechanism that interlocks with the manual operation handle on one side. In this case, the main shaft is mechanically separated from the mechanism and the movable spindle for driving the main contact point is connected to the injection solenoid by the link mechanism.

The holding coil method can be used as a sequential control method in the △ system according to the protection cooperative method, but in the Y system, the switch is opened unconditionally when the power of the coil is lost, so it is installed in series with a recloser, sectionalizer, etc. It is impossible to use because it destroys the protection coordination when it is used. Since the holding coil is always excited, the deterioration of stability and reliability is accompanied by a failure of the entire system due to deterioration of the solenoid and failure of the control circuit.

In addition, since the solenoid is always excited, there is no way to remove the residual energy in the solenoid, and thus the application time is limited because the time required for opening after injection is long.

Here, look at the configuration and operation principle of the existing holding coil type switch as follows.

That is, as shown in FIGS. 1 and 2, 2 is a manual operation handle provided on the outer side of the case 1, and a lever 9 is fixedly installed at the end of the connecting shaft of the handle.

In addition, as shown in FIG. 4, the connecting shaft casing is provided with cams 11 having arcuate first and second operating parts 11a and 11b so as to be idling, between one side end and one side end of the lever 9. A vertical toggle spring 10 is provided with a ballistic ball. In addition, on the upper side of the inside of the casing (1), the movable spindle (3) having the movable contact (8a) provided with the movable contact (8a) as an insulating arm (7) at an opposite position of the fixed contact (8b) fixed to one wall along the longitudinal direction is supported While being installed, the movable main shaft 3 was provided in contact with the operating portions 11a and 11b of the cam 11 as rollers 3b and 3c above and below the spindle lever 3a.

On one side of the movable spindle 3, a link mechanism 4 composed of first, second and third swing levers 4a, 4c and 4e, first and second pull levers 4b and 4d and a rotation lever 4f is provided. Was hingedly installed with the plunger 5a of the automatic feeding solenoid 5 installed in the subsidiary case 1a below (see Fig. 3).

Looking at the operating state of the switch configured as described above is as follows.

First, manual closing state

When the handle 2 is turned clockwise in the state of FIG. 4A, the lever 9 directly connected to the handle turns from the point C to the right to reach the dead point B while the toggle spring 10 is scaled.

The lever 9 moves to the point A, and the cam 11 rotates quickly from the point B to the point D for the force of the compressed toggle spring when the dead point B is exceeded by the continuous turning operation. By using the 11a and 11b to pivot the upper and lower rollers 3b and 3c of the spindle lever 3a integrally assembled with the movable spindle 3, the spindle is pivoted in the same direction and coupled thereto. The main circuit is introduced while the movable contact 8a is coupled to the fixed contact 8b (see also figure 4b).

Second, passive blocking state

In the closing state of FIG. 4B, the lever 9 rotates counterclockwise and the lever 9 reaches the dead point B 'at the A point, and when the dead point is exceeded, the lever spring 10 is accumulated at the toggle spring 10. The lever 9 moves quickly from the point C to the point C and the cam 11 moves from the point D to the E by force. At this time, the first and second operating parts 11a and 11b are brought into contact with the rollers 3b and 3c. As the spindle lever 3a and the movable spindle 3 turn counterclockwise, the movable contact 8a is separated and the main circuit is interrupted (see also Fig. 4A).

Third, automatic closing state

When the solenoid 5 in the auxiliary case 1a is operated in the state of FIG. 4A and the plunger 5a is inserted, the movable spindle 3 is rotated clockwise by the link mechanism 4 and the rollers 3b and 3c are rotated. As a result, the cam 11 is moved from the position E to the position F to condense the toggle spring 10, and the movable contact 8a is engaged with the fixed contact 8b so that the main circuit is introduced (see FIG. 4c).

The above describes the structure of the existing holding coil type switch and its operation principle. Depending on the subdivided type, the spring toggle mechanism may be different, but the movable spindle and the spring toggle mechanism are basically separated, and the closing solenoid is linked. The structure for directly driving the movable spindle by the mechanism is operated by the same principle of operation.

However, the holding coil type switch as described above cannot be used in the Y ground system, which does not allow the power supply to be opened or closed unconditionally, and even when applied to the forward type control method in the △ system, When an abnormality occurs in the control circuit, it immediately causes a power failure state of the entire system, thereby reducing the safety and reliability of the product.

In addition, since the shortest operation time from opening to opening is about 0.7 seconds due to the residual energy of the solenoid, there is a problem such that it is impossible to use in a protection system requiring a higher speed operation.

Accordingly, an object of the present invention is to solve the above-mentioned problems and at the same time, minimize the time required for opening after injection and solve the residual energy problem of the solenoid, thereby enabling high re-input within the minimum opening time and the shortest time. In providing a switch.

It is another object of the present invention that the existing holding coil type switch is used only as a load switch of the △ system so that all the △, Y systems can be applied, and can be utilized as a breaker-class switch that requires high-speed operation. It is in a ship.

In order to achieve the above object, between the linkage connecting the movable spindle and the solenoid, the mechanical latch mechanism configured to directly interlock the plunger of the solenoid or to detach the plunger primarily, The plunger is automatically interrupted at the same time as the input to maintain the closing state, and when the latch mechanism is set by opening and closing the DC side of the rectifier circuit to which the solenoid closing coil is connected, it is opened by the residual energy of the closing solenoid. The delay of time is left unattended.

The latch method of the present invention is largely divided into a method of interlocking a plunger of an open solenoid and a method of primarily separating a plunger of a solenoid.

The method of interlocking the plunger of the solenoid at the time of opening is relatively simple, and it can be used as a general load switch because it can perform the opening operation time after about 5 cycles by the DC side control means of the present invention. It is difficult to apply to breakers.

In addition, the first method of separating the plunger of the solenoid at the time of opening may be applied to a switch that requires a high speed of about 3 cycles.

It will be described below in more detail based on the preferred embodiment of the present invention.

There is a manual operation handle part on one side of the case, a toggle spring axle mechanism part connected to the case, and a movable spindle for separating / contacting a mechanically separated contact part, and an injection solenoid in an auxiliary case connects the movable spindle and the rotating plate. The branch lever has a latch lever 51 and a semi-circular latch cam at a link portion for connection between the plunger of the input solenoid and the link mechanism for driving the contact, in order to maintain the closing state of the plunger in connection with the link mechanism. A primary toggle latch mechanism consisting of a support and link connecting plate 58 having a 59 and a primary toggle lever 57 is provided, and is composed of a latch release lever 56 and a secondary toggle lever 54. The solenoid closing high pressure switch is designed to eliminate the influence of residual energy of the closing solenoid at the time of opening while maintaining the closing state as a secondary toggle latch mechanism. As a method for maintaining the input state dispersion, the configuration thereof will be described with reference to FIGS. 5 and 6 as follows.

There is a manual operation handle part on one side of the case, a toggle spring axle mechanism part connected to the case, and a movable spindle for separating / contacting a mechanically separated contact part, and an injection solenoid in an auxiliary case connects the movable spindle and the rotating plate. In the configuration of the device for maintaining the state in which the branch is interlocked with the normal one connected as a link mechanism, the position of the primary toggle is further provided between the link 6 and the rotating plate 12 to collapse the primary toggle, so that the remaining of the solenoid It allows for quick opening regardless of energy or inertia of the plunger.

That is, in the open state, the primary toggle lever 57 is latched on the latch surface 57a by the semicircular latch cam 59 in the support, link, and connecting plate 58.

When the plunger of the solenoid 5 is pulled, the latch lever 51 connected to the link 6 rotates counterclockwise around the fixed rotation shaft 52, and the primary toggle mechanism linked thereto is pushed to move the link. The rotating plate 12 on the mechanism side rotates clockwise.

When the plunger is pulled to its maximum position, the link link 56 "connected to the rotating plate rotates about the shaft pin 56" by interlocking the latch release lever 56 so that the latch lever 51 is connected to the secondary toggle lever 54. By the latch surface 55.

When the trip coil 60 is urged, the primary toggle is collapsed by hitting the cam lever 59a on one side of the semicircular latch cam 59, and the rotary plate 12 rotates to open the switch.

In addition, the latch release lever 56 rotates about the central pin 56 " while hitting the secondary toggle lever 54 so that the latch of the plunger is released, and the plunger return tension spring 53 is released. By the plunger is returned by the latch lever 51 is rotated, the primary toggle mechanism is pulled, the latch is completed and ready to re-insert.

In this method, the rotary plate 12 sets the primary toggle mechanism between the links 6 of the plunger, so that the operating time during the opening operation is introduced, allowing the rapid operation while keeping the residual energy of the solenoid independent of the inertia force of the plunger. Therefore, it is possible to apply a high-speed breaker requiring an opening time of about 1.5 cycles.

In the figure, reference numeral 59c denotes a cam lever rotation angle adjusting hole, and 58c is a projection for the cam lever rotation angle stopper protruding from the support and link connecting plate.

The present invention, by setting the primary toggle mechanism on the plunger shaft link of the solenoid is connected to the rotating plate interlocked with the main shaft, thereby preventing the delay of the opening time due to the residual energy of the solenoid and the inertia force of the plunger during opening. have.

In addition, the mechanical latch mechanism is installed between the link mechanism of the main shaft driving the contact portion and the plunger of the solenoid, thereby eliminating the limitations of cooperation, reliability and stability of the holding coil system. There is another effect that can be made.

Claims (2)

There is a manual operation handle part on one side of the case, a toggle spring shaft mechanism part connected to the case, and a movable spindle for separating / contacting a mechanically separated contact part, and an injection solenoid in an auxiliary case connects the movable spindle and the rotating plate. The branch lever has a latch lever 51 and a semi-circular latch cam on a link portion for connection between the plunger of the input solenoid and the link mechanism for driving the contact, in order to maintain the closing state to the connected link mechanism. A secondary toggle lever composed of a support and link connecting plate 50 provided with a 59 and a primary toggle lever 57, and a latch release lever and a secondary toggle lever 54; While maintaining the closing state as a mechanism, the solenoid closing high pressure switch is designed to eliminate the residual energy effect of the closing solenoid at the time of opening. How to maintain particle dispersion. There is a manual operation handle part on one side of the case, a toggle spring shaft mechanism part connected to the case, and a movable spindle for separating / contacting a mechanically separated contact part. An injection solenoid in an auxiliary case connects the movable spindle and the rotating plate. In the configuration of the device for maintaining the state that is interlocked with the usual one connected as a link mechanism, the central portion is hinged to the fixed rotation shaft 52, and one side end is coupled with the plunger side link (6) On the front side, a rotary shaft of one end of the cam lever 59a which is interlocked with the tripping coil 60 by being latched with a latch lever 51 having a plunger return tension spring 53 and a torsion spring 46 on one side thereof. 59b) a support and link connection having a semicircular latch cam 59 on an extension and a central portion hingedly installed with the other side end of the latch lever 51; (58), and one latch hinge (57a) at the end, the center portion is hinged to the lower end of the support and link connecting plate, the leading end is hinged with the rotary plate (12) which is attached to the link mechanism (4) end of the switchgear. A second toggle lever 57 and a latch surface 55 for contacting the lever lever 51 on the upper side, and latched by a latch release lever 56 interlocked with the rotary plate 12 and the link link 56 '. The input state maintenance device of the solenoid-type high-pressure switch is characterized in that the vehicle toggle lever (54).

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