TWI582814B - Gas breaker - Google Patents

Description

Gas interrupter

The present invention relates to a gas interrupter that employs a bidirectional drive mechanism that drives electrodes in opposite directions to each other.

A gas interrupter used in a high-voltage power system generally uses a gas-clad gas interrupter called a blow-by gas gas interrupter that is pressurized by using an arc-extinguishing gas in the middle of the interrupting operation, and will compress The gas is blown toward the arc generated between the electrodes to interrupt the current. The electrode is constituted by a driven side electrode that is disposed to face the driving side electrode that is driven by an operator such as a hydraulic pressure or a spring, and each electrode is formed by a main contact that forms a main current path when normally connected, and is formed at the time of blocking. The arc contact of the arc is formed.

In order to improve the blocking performance of the blow-through gas circuit breaker, it has been proposed to drive a fixed bidirectional driving method in which the driven side electrode is driven in the opposite direction to the driving direction of the driving side electrode, and there are basically two types of methods.

One of them is to drive the main contact and the arc contact on the driven side at the same time. For example, Patent Document 1 proposes a rack and pinion method. In the present invention, the driven side arc will be driven at the bottom of the driven side main contact The contact is fixed, and the rack is mounted on the front end of the insulating nozzle on the driving side and the bottom of the main contact on the driven side, and the driving side main contact and the arc contact are driven by the rotation of the pinion therebetween. Drive in the opposite direction.

The other is to fix the main contact on the driven side and will The arc contact is driven, for example, the method of the fork rod proposed in Patent Document 2. The fork-shaped rod is rotated by the pin interlocked with the driving-side action, and the driving-side arc electrode is driven toward the driving-side electrode by converting it into a reciprocating motion in the direction of the opening and closing axis. Drive in the opposite direction.

[Previous Technical Literature] [Patent Document]

Patent Document 1 Japanese Patent Laid-Open Publication No. 2003-109479

Patent Document 2 US Patent No. 6,271,494

In order to satisfy the withstand voltage in the interrupted state of the interrupter, it is necessary to ensure the insulation distance of the electrode determined according to the voltage level. The insulation distance is approximately the distance between the main contacts on the driving side and the driven side and the arc contact point. Make a decision between the distances. On the other hand, although it is necessary to keep moving from a normal connection state to an interruption state, each contact must be kept in a certain state of energization, but since the arc contact must be temporarily energized after the main contact is disconnected, the arc connection is generally performed. The moving distance between points is more than the moving distance between the main contacts Big.

In Patent Document 1, since the main contact to be driven is advanced The row is driven so that the moving distance on the driving side can be relatively reduced and the operating energy can be reduced. On the other hand, since the main contact and the arc contact are combined, in order to ensure the moving distance between the arc contacts, it is necessary to increase the moving distance of the driven side main contact more than necessary.

In Patent Document 2, since only the moving distance is large Since the drive side arc contact is driven, the moving distance of the driven side arc contact can be reduced, and the bidirectional drive mechanism portion becomes tight. On the other hand, since the driven side main contact is not driven, in order to secure the moving distance between the main contacts, it is necessary to increase the moving distance of the driving side larger than that of Patent Document 1, and the operating energy is increased.

In order to solve the above problems, the gas shutoff device of the present invention has a driving side electrode and a driven side electrode facing each other in a sealing groove, and the driving side electrode has a driving side main contact and a driving side arc main contact, and the aforementioned The driving side electrode has a driven side main contact and a driven side arc contact, wherein the driving side main contact and the driving side arc contact are connected to an operator, the driven side main contact and the driven side arc The electrode is coupled to the bidirectional drive mechanism portion, and the bidirectional drive mechanism portion (10) includes a first drive side connecting rod (11) and a second drive side connecting rod (27), and receives driving from the driving side electrode. Force; the driven side arc contact connecting member (14) is connected to the driven side arc contact (5); The driving side connecting cylinder guiding member (16) is connected to the driven side main contact (3); the first rod (12) is simultaneously driven to the driven side arc with respect to the action of the first driving side connecting rod (11) The contact connecting member (14) and the driven side connecting cylinder guiding member (16) operate in opposite directions; and the second rod (28) is driven only with respect to the operation of the second driving side connecting rod (27) The side arc contact connecting member (14) operates in a reverse direction and has a bidirectional driving mechanism that simultaneously rotates the first rod (12) in the first half of the interrupting operation while simultaneously driving the driven main contact ( 3) Driven by the driven side arc contact (5), and only the driven side arc contact (5) is driven by rotating the second lever (28) in the second half of the interrupting action.

According to the present invention, since the moving distance on the driving side and the moving distance of the driven side main contact are suppressed to the minimum required, the operating energy can be reduced. Further, by keeping the moving distance on the driving side at the minimum required, the lever for transmitting the motion on the driving side and the driven side can be reduced, and the bidirectional driving mechanism portion can be tightened.

1‧‧‧operator

2‧‧‧Drive side main contact

3‧‧‧Driven side main contact

4‧‧‧Drive side arc contact

5‧‧‧Driven side arc contact

6‧‧‧Axis

7‧‧‧Mechanical compression chamber

8‧‧‧ nozzle

9‧‧‧ Thermal expansion chamber

10‧‧‧Two-way drive mechanism

11‧‧‧First drive side connecting rod

12‧‧‧first shot

13‧‧‧First rod fixing pin

14‧‧‧Driven side arc contact joint member

15‧‧‧Driven side connecting tube

16‧‧‧Driven side connecting cylinder guiding member

17‧‧‧First movable

18‧‧‧First drive side connecting rod groove cam

18A‧‧‧First straight line

18B‧‧‧Connecting Department

18C‧‧‧Second straight section

19‧‧‧ Guides

20‧‧‧ Guide groove cam A

21‧‧‧First rod groove cam A

22‧‧‧Second movable

23‧‧‧Driven side arc contact connecting member groove cam A

23A‧‧‧ Curve Department

23B‧‧‧Linear Department

24‧‧‧ Guide groove cam B

25‧‧‧First rod groove cam B

26‧‧‧Driven side connecting groove cam

27‧‧‧Second drive side connecting rod

28‧‧‧second shot

29‧‧‧Second rod fixing pin

30‧‧‧third movable

31‧‧‧Second drive side connecting rod groove cam

31A‧‧‧First straight line

31B‧‧‧Connecting Department

31C‧‧‧Second straight section

32‧‧‧ Guide groove cam C

33‧‧‧Second pole groove cam A

34‧‧‧fourth movable

35‧‧‧Driven side arc contact connecting member groove cam B

35A‧‧‧Linear Department

35B‧‧‧ Curve Department

36‧‧‧ Guide groove cam D

37‧‧‧Second rod groove cam B

38‧‧‧ Link

39‧‧‧First drive side fastening screw

40‧‧‧Second drive side fastening screw

41‧‧‧First fixed pin stop ring

42‧‧‧First movable pin stop ring

43‧‧‧Second movable pin stop ring

44‧‧‧Second fixed pin stop ring

45‧‧‧third movable pin stop ring

Fig. 1 is a detailed view of a bidirectional drive mechanism of a gas circuit breaker according to an embodiment of the present invention. Indicates the blocking state of the blocking unit.

Fig. 2 is a view showing the input of a gas interrupter according to an embodiment of the present invention A diagram of the state.

Fig. 3 is a front elevational view showing the bidirectional drive mechanism of the gas interrupter according to the embodiment of the present invention.

Fig. 4 is an exploded perspective view showing the bidirectional driving mechanism of the gas circuit breaker according to the embodiment of the present invention.

Fig. 5 is a view showing the stroke characteristics of the gas circuit breaker according to the embodiment of the present invention.

Fig. 6 is a view showing the driven side main contact and the driven side arc after the first movable pin approaches the curved portion of the first drive side connecting rod groove cam in the middle of the interruption of the gas shutoff device according to the embodiment of the present invention. A diagram of the state in which the contact starts at the same time.

Fig. 7 is a view showing the end of the drive-side main contact before the first movable pin is about to pass through the curved portion of the first drive-side connecting rod groove cam in the middle of the interruption of the gas shutoff device according to the embodiment of the present invention. A diagram of the previous state.

Fig. 8 is a view showing that the driven main contact is stopped before the third movable pin approaches the curved portion of the second drive side connecting rod groove cam in the middle of the blocking of the gas shutoff device according to the embodiment of the present invention, and is A diagram in which the driving side arc contact is temporarily stopped.

Fig. 9 is a view showing that, in the middle of the interruption of the gas shutoff device according to the embodiment of the present invention, after the third movable pin approaches the curved portion of the second drive-side connecting rod groove cam, only the driven side arc contact continues to operate. A diagram of the state.

Fig. 10 is a view showing the end of the driven side arc contact before the third movable pin is about to pass through the curved portion of the second drive side connecting rod groove cam in the middle of the interruption of the gas shutoff device according to the embodiment of the present invention. Previous state Figure.

Fig. 11 is a view showing a state of interruption of the gas shutoff device according to the embodiment of the present invention.

Hereinafter, the gas of the embodiment of the present invention will be described with reference to the drawings. The interrupter is explained. Further, the following examples are always implemented, and the gist of the invention is not intended to limit the scope of the invention to the following specific aspects. The invention itself can be implemented in various aspects in accordance with the contents described in the scope of the patent application. Although an example of a breaker having a mechanical compression chamber and a thermal expansion chamber will be described in the following embodiments, the present invention can also be applied to, for example, a breaker having only a mechanical compression chamber.

[Example 1]

Fig. 2 is a view showing an input state of the gas shutoff device according to the embodiment of the present invention.

In the seal groove 100, the drive electrode and the driven electrode are disposed coaxially opposite each other. The drive side electrode has a drive side main contact 2 and a drive side arc contact 4, and the driven electrode has a driven side main contact 3 and a driven side arc contact 5.

The operator 1 is disposed adjacent to the seal groove 100. The shaft 6 for transmitting the driving force is coupled to the operator 1, and the driving side arc contact 4 is provided at the front end of the shaft 6. The shaft 6 and the drive side arc contact 4 are disposed to penetrate through the mechanical compression chamber 7 and the thermal expansion chamber 9.

The drive side main contact 2 and the nozzle 8 are provided on the blocking portion side of the thermal expansion chamber 9. The driven side arc contact 5 is disposed coaxially with respect to the drive side arc contact 4. One end of the driven side arc contact 5 and the front end of the nozzle 8 are coupled to the bidirectional drive mechanism portion 10.

As shown in Fig. 2, the gas interrupter is set to drive the drive side main contact 2 and the driven side main contact 3 in the input state by the hydraulic pressure of the actuator 1 or the drive source formed by the spring. The position of the power system that constitutes the normal time.

When the short-circuit current caused by a lightning strike or the like is blocked, the operator 1 is driven in the opening direction, and the transmission-side main contact 2 and the driven-side main contact 3 are separated by the transmission shaft 6. At this time, an arc is formed between the driving side arc contact 4 and the driven side arc contact 5. The arc is arc-extinguished by the mechanical arc-extinguishing gas blowing generated by the mechanical compression chamber 7 and the arc-extinguishing gas blowing by the arc heat generated by the thermal expansion chamber 9, thereby interrupting the current.

In order to reduce the operating energy of the blow-by gas shutoff device, a bidirectional drive mechanism portion 10 is provided which drives the conventionally driven driven arc contact to the opposite direction of the drive direction of the drive side electrode. . Hereinafter, a bidirectional driving method according to an embodiment of the present invention will be described with reference to FIGS. 1 , 3 , and 4 .

In the two-way drive mechanism portion 10 of the present invention, as shown in Figs. 1 and 3 and 4, the first drive side connecting rod 11 and the second drive side connecting rod 27 and the driven side arc are guided by the guide 19. The contact connecting member 14 and the driven side connecting cylinder guiding member fixed to the driven side connecting cylinder 15 The 16 is movably held in the direction of the blocking operation, and is configured by being rotatably connected to the first rod 12 and the second rod 28 of the guide 19. The first rod 12 simultaneously operates the driven side arc contact connecting member 14 and the driven side connecting barrel 15, and the second rod 28 operates only the driven side arc contact connecting member 14.

The first drive-side connecting rod groove 18 is cut out to form the first drive-side connecting rod groove cam 18, and is viewed from the operator side by the second straight portion 18C, the connecting portion 18B, and the first straight portion 18A. The first straight portion 18A and the second straight portion 18C are provided on axes different from each other, and a connecting portion 18B is provided therebetween. Further, the shape of the connecting portion 18B can be arbitrarily designed in accordance with the operational characteristics of the blocking portion, and for example, it is conceivable to form a curve or a straight line. The first drive side connecting rod 11 restricts the displacement in the vertical direction by the groove provided in the guide 19, and can move only in the horizontal direction of the opening and closing operation axis of the blocking portion.

The first movable pin 17 is communicated with the first rod groove cam A21 and the first driving side connecting rod groove cam 18 which are formed by cutting out the first rod 12, and the guide groove cam A20 which is formed by cutting out the guide member 19.

By the rotational movement of the first rod, the first rod groove cam B25 formed by cutting the first rod 12 transmits the force to the second movable pin 22 passing through the groove. The second movable pin 22 is a curved portion 23A of the driven-side arc-contact connecting member groove cam A23 formed by cutting the driven-side arc-contact connecting member 14 and the driven-side connecting cylinder guiding member 16 The driven side connecting groove groove cam 26 formed by cutting out and the guide groove cam B24 formed by cutting out of the guide 19 are connected to each other, and the groove cam is connected to the driven side. 26 and the guide groove cam B24 are moved, and the driven side arc contact connecting member 14 and the driven side connecting barrel 15 are driven in the opposite directions of the first driving side connecting rod 11 and the second driving side connecting rod 27. Therefore, the driven side arc contact 5 connected to the driven side arc contact connecting member 14 and the driven side main contact 3 connected to the driven side connecting barrel 15 are connected to the first driving side connecting rod 11 and The drive side arc contact 4 and the drive side main contact 2 connected to the second drive side connecting rod 27 are driven on the opposite side.

When the first movable pin 17 is located at the first linear portion 18A and the second straight portion 18C of the first drive side connecting rod groove cam 18, or the second movable pin 22 is located at a straight portion of the driven side arc contact connecting member groove cam A23 At the time of 23B, the first rod 12 is held in position, the first movable pin 17 is located at the joint portion 18B of the first drive side connecting rod groove cam 18, and the second movable pin 22 is located at the driven side arc contact joint member groove cam A23. The first rod 12 is rotatable when the curved portion 23A is used.

The second drive side connecting rod groove 31 is cut out to form the second drive side connecting rod groove cam 31, and is constituted by the second straight portion 31C, the connecting portion 31B, and the first straight portion 31A as viewed from the operator side. The first straight portion 31A and the second straight portion 31C are provided on axes different from each other, and a connecting portion 31B is provided therebetween. Further, the shape of the connecting portion 31B can be arbitrarily designed in accordance with the operational characteristics of the blocking portion, and for example, it is conceivable to form a curve or a straight line. The second drive side connecting rod 27 restricts the displacement in the vertical direction by the groove provided in the guide 19, and can move only in the horizontal direction of the opening and closing operation axis of the blocking portion.

The third movable pin 30 is communicated with the second rod groove cam A33 and the second driving side connecting rod groove cam 31 which are formed by cutting out the second rod 28, And a guide groove cam C32 formed by cutting out the guide member 19.

By the rotational movement of the second lever, the second lever cam B37 formed by cutting the second lever 28 transmits the force to the fourth movable pin 34 passing through the groove. The fourth movable pin 34 is a curved portion 35B of the driven-side arc-contact connecting member groove cam B35 formed by cutting the driven-side arc-contact connecting member 14 and a guide formed by cutting out the guide 19 The groove cam D36 communicates with the driven side arc contact connecting member groove cam B35 and the guide groove cam D36, and drives the driven side arc contact connecting member 14 to the first driving side connecting rod 11 and the second. The driving side connecting rod 27 is driven in the reverse direction. Therefore, the driven side arc contact 5 connected to the driven side arc contact connecting member 14 is opposite to the driving side arc contact 4 connected to the first driving side connecting rod 11 and the second driving side connecting rod 27. Side drive.

When the third movable pin 30 is located on the first linear portion 31A and the second straight portion 31C of the second drive-side connecting rod groove cam 31, or the fourth movable pin 34 is located at a straight portion of the driven-side arc-contact connecting member groove cam B35. At 35A, the second lever 28 is held in position, the third movable pin 30 is located at the coupling portion 31B of the second driving side connecting rod groove cam 31, and the fourth movable pin 34 is located at the driven side arc contact connecting member groove cam B35. The second lever 28 is rotatable when the curved portion 35B is in use.

The driven side arc contact connecting member 14 and the driven side connecting cylinder guiding member 16 are displaced in the vertical direction by the grooves provided in the guide 19, and can be oriented only in the horizontal direction of the opening and closing operation axis of the blocking portion. mobile.

The connection between the two-way drive mechanism unit 10 and the drive side is, for example, As shown in Fig. 2, the connecting ring 38 is attached to the nozzle port 8, and the connecting ring 38 is provided with a hole through which the front end portion of the first driving side connecting rod 11 and a front end portion of the second driving side connecting rod 27 are inserted. The hole has a configuration in which the first drive side fastening screw 39 and the second drive side fastening screw 40 are locked by a nut.

Although the first rod fixing pin 13 may have a structure in which the guide member 19 and the first rod 12 are penetrated by one member, it is preferable that the two members are respectively provided as shown in FIGS. 3 and 4 At the both ends of the guide 19, the first rod 12 is rotatably held from both sides.

In order to prevent the first rod fixing pin 13 from being detached from the guide member 19, for example, it is possible to engrave the groove at both ends of the pin and to embed the first fixing pin retaining ring 41, respectively.

With such a configuration, since the first rod fixing pin 13 can be designed without hindering the first driving side connecting rod 11, the degree of freedom in design is improved.

Furthermore, although the second rod fixing pin 29 may have a structure in which the guide member 19 is penetrated by one member as shown in FIGS. 3 and 4, two members may be respectively provided on the guide member 19. At the end, the second lever 28 is rotatably held on one side.

In order to prevent the second rod fixing pin 29 from being detached from the guide member 19, for example, a groove can be formed at both ends of the pin, and the second fixing pin retaining ring 44 can be inserted, respectively.

Since the operation of the first movable pin 17, the second movable pin 22, the third movable pin 30, and the fourth movable pin 34 is smoothly transmitted, the guide member 19 is preferably penetrated by one member.

In order to prevent the first movable pin 17, the second movable pin 22, and the third movable pin 30 from being loosened from the guide member 19, for example, grooves may be carved at both ends of the pin, and the first movable pin may be respectively stopped. The movable ring 42, the second movable pin stop ring 43, and the third movable pin stop ring 45 are embedded.

If the fourth movable pin 34 is joined by the same snap ring, the guide 19 projects and blocks the driven side connecting cylinder guiding member 16. Therefore, the fourth movable pin 34 is formed to have a length in which the guide 19 is not protruded, and the both end positions of the fourth movable pin 34 are restricted by the end face of the driven side connecting cylinder guide member 16 on the guide 19 side.

The first rod 12 is formed to sandwich the plate member of the same shape from the outer side of the guide member 19 in order to uniformly receive the reaction force from the first movable pin 17, and the second rod 28 is equally received from the third movable pin 30. The reaction force of the rod is formed into a double-fork configuration for sandwiching the second drive-side connecting rod 27.

In the fourth embodiment, the driven-side connecting cylinder 15 is an example in which the semi-circular members are joined by a connecting member (not shown), but a tubular integrated body may be formed. Further, in order to reduce the weight, a weight reducing hole may be provided in each of the cylindrical surfaces. Further, instead of the tubular member, a rod-shaped member that connects the driven-side main contact 3 and the driven-side connecting cylinder guide member 16 may be used.

Hereinafter, the state in the middle of each disconnection operation will be described using Figs. 5 to 11 .

Fig. 5 is a diagram in which time is the horizontal axis, and the driving side stroke and the driven side stroke are the vertical axes.

The time a is the interruption start time, and the time b is the time after the operation of the driven side main contact 3 and the driven side arc contact 5 (the state of Fig. 6).

The time c is a state before the first movable pin 17 is about to pass through the connecting portion 18B of the first drive-side connecting rod groove cam 18 (state of Fig. 7), in other words, before the end of the operation of the driven side main contact 3 time.

The time d is a state in which the first movable pin 17 passes through the connecting portion 18B of the first driving-side connecting rod groove cam 18, and the third movable pin 30 approaches the connecting portion 31B of the second driving-side connecting rod groove cam 31 instantaneously. Further, it is a time at which the driven side main contact 3 and the driven side arc contact 5 are temporarily stopped (state of Fig. 8).

The time e is a state after the third movable pin 30 approaches the connecting portion 31B of the second drive-side connecting rod groove cam 31 (the state of FIG. 9), and is the time after the driving-side main contact 3 resumes the operation.

The time f is a state before the third movable pin 30 is about to pass through the connecting portion 31B of the second drive-side connecting rod groove cam 31 (the state of FIG. 10), and is before the end of the operation of the driven side main contact 3. time.

The time g is the time at which the state is blocked.

The stroke of the two electrodes at each time is expressed as, for example, s4ab from the time a to the time b of the drive side arc contact 4.

Figure 6 is a diagram showing the driven side main contact 3 and the driven side. A diagram of the state after the action of the arc contact 5. The stroke from time a to time b is s4ab (≠0) on the drive side arc contact 4, s5ab (≠0) on the driven side arc contact 5, and s3ac (≠0) on the driven side main contact 3. And the driven side arc contact 5 and the driven side main contact 3 are simultaneously driven.

Fig. 7 is a view showing a state before the first movable pin 17 is about to pass through the connecting portion 18B of the first drive-side connecting rod groove cam 18. The stroke from the time a to the time c indicating the stroke of the time is that the drive side arc contact 4 is s4ac (>s4ab), the driven side arc contact 5 is s5ac (>s5ab), and the driven side main contact is driven. 3 is s3ac (>s3ab), and the driven side arc contact 5 and the driven side main contact 3 are simultaneously driven.

Fig. 8 is a view showing a state in which the first movable pin 17 passes through the connecting portion 18B of the first driving-side connecting rod groove cam 18, and the third movable pin 30 approaches the connecting portion 31B of the second driving-side connecting rod groove cam 31 instantaneously. A diagram of the state. The stroke from the time a to the time d indicating the stroke of the time is that the drive side arc contact 4 is s4ad (>s4ac), the driven side arc contact 5 is s5ad (>s5ac), and the driven side main contact is driven. 3 is s3ad (>s3ac), and the driven side main contact 3 is stopped, and the driven side arc contact 5 is also temporarily stopped.

In the present embodiment, in the state from the sixth to eighth figures, the moving distance of the driven side arc contact 5 is larger than the driven side main contact 3. This difference is that the width of the opening/closing axis direction of the driven side connecting grooved groove cam 26 is zero, and the width of the curved portion 23A of the driven side arcing contact connecting member grooved cam A23 is not zero. Value, and While the driven side connecting cylinder guide member 16 travels a certain distance, the traveling distance of the driven side arc contact connecting member 14 is widened only by the opening and closing axis direction of the curved portion 23A of the driving side arc contact connecting member groove cam A23. Become bigger.

In addition, in this specification, from Figure 6 to Figure 8 The state shown is called "the first half of the interruption operation", and the state shown in Fig. 9 to Fig. 11 is referred to as "the second half of the interruption operation".

Figure 9 is a view showing the third movable pin 30 approaching the second driving side A view showing a state after the connection portion 31B of the rod groove cam 31 is connected. The travel from time a to time e is s4ae (>s4ad) on the drive side arc contact 4, s5ae (>s5ad) on the driven side arc contact 5, and s3ae (=s3ad) on the driven side main contact 3. And the drive side main contact 3 is stationary.

FIG. 10 is a view showing a state before the third movable pin 30 is about to pass through the connecting portion 31B of the second drive-side connecting rod groove cam 31. The travel from time a to time f is that the drive side arc contact 4 is s4af (>s4ae), the driven side arc contact 5 is s5af (>s5ae), and the driven side main contact 3 is s3af (=s3ad). And the drive side main contact 3 is stationary.

Fig. 11 is a view showing an interrupted state. The stroke from time a to time g is s4ag (>s4af) on the drive side arc contact 4, s5ag (>s5af) on the driven side arc contact 5, and s3ag (=s3ad) on the driven side main contact 3. And the drive side main contact 3 is stationary.

As in the present embodiment, at the beginning of the interruption operation, the first When the movable pin 17 moves in the connecting portion 18B of the first drive-side connecting rod groove cam 18, the first rod 12 is rotated by the second movable pin 22, and the driven side arc contact connecting member 14 and the driven side connecting barrel guide The lead member 16 is simultaneously driven, and when the third movable pin 30 moves in the connecting portion 31B of the second driving side connecting rod groove cam 31 in the intermediate stage of the blocking operation, the second rod 28 is rotated by the fourth movable pin 34 only The drive side arc contact connecting member 14 is driven, whereby the driven side main contact 3 can ensure the arc contact distance with the minimum required operation.

Furthermore, by the first shot at the beginning of the interruption action 12, a certain degree of movement distance of the driven side arc contact 5 is ensured, and the moving distance of the driven side arc contact 5 of the second rod 28 in the latter half of the interruption operation can be reduced. Although the rod must be lengthened when the moving distance of the driving side arc contact 5 becomes long, the rod can be restrained to the minimum required length in this configuration, and the bidirectional driving mechanism portion can be tightened.

5‧‧‧Driven side arc contact

11‧‧‧First drive side connecting rod

13‧‧‧First rod fixing pin

15‧‧‧Driven side connecting tube

17‧‧‧First movable

18A‧‧‧First straight line

18C‧‧‧Second straight section

20‧‧‧ Guide groove cam A

22‧‧‧Second movable

10‧‧‧Two-way drive mechanism

12‧‧‧first shot

14‧‧‧Driven side arc contact joint member

16‧‧‧Driven side connecting cylinder guiding member

18‧‧‧First drive side connecting rod groove cam

18B‧‧‧Connecting Department

19‧‧‧ Guides

21‧‧‧First rod groove cam A

23‧‧‧Driven side arc contact connecting member groove cam A

23A‧‧‧ Curve Department

23B‧‧‧Linear Department

24‧‧‧ Guide groove cam B

25‧‧‧First rod groove cam B

26‧‧‧Driven side connecting groove cam

27‧‧‧Second drive side connecting rod

28‧‧‧second shot

29‧‧‧Second rod fixing pin

30‧‧‧third movable

31‧‧‧Second drive side connecting rod groove cam

31A‧‧‧First straight line

31B‧‧‧Connecting Department

31C‧‧‧Second straight section

32‧‧‧ Guide groove cam C

33‧‧‧Second pole groove cam A

34‧‧‧fourth movable

35‧‧‧Driven side arc contact connecting member groove cam B

35A‧‧‧Linear Department

35B‧‧‧ Curve Department

36‧‧‧ Guide groove cam D

37‧‧‧Second rod groove cam B

Claims (8)

A gas interrupter is provided with a driving side electrode and a driven side electrode facing each other in a sealing groove, the driving side electrode having a driving side main contact and a driving side arc main contact, wherein the driven side electrode is driven The side main contact and the driven side arc contact, the drive side main contact and the drive side arc contact are connected to the operator, and the driven side main contact and the driven side electrode are coupled to the bidirectional drive mechanism The bidirectional drive mechanism portion (10) includes a first drive side connecting rod (11) and a second drive side connecting rod (27), and receives a driving force from the driving side electrode; An arc contact connecting member (14) is connected to the driven side arc contact (5); a driven side connecting barrel guiding member (16) is connected to the driven side main contact (3); the first rod (12) simultaneously moving the driven side arc contact connecting member (14) and the driven side connecting barrel guiding member (16) in the opposite direction with respect to the operation of the first driving side connecting rod (11) And a second rod (28) opposite to the aforementioned second driving side In the operation of the connecting rod (27), only the driven side arc contact connecting member (14) is operated in the reverse direction, and a bidirectional driving mechanism is provided which allows the first rod to be in the first half of the blocking operation ( 12) rotating while driving the driven side main contact (3) and the driven side arc contact (5), and by rotating the second rod (28) in the latter half of the interruption operation, only the foregoing Driven by the drive side arc contact (5). A gas interrupter as recited in claim 1, wherein a guide member (19) for restricting the first drive side connecting rod (11) and the second driving side connecting rod (27) and the driven side arc contact connecting member (14) and The operation of the driven side connecting cylinder guide member (16), the first driving side connecting rod groove cam (18) of the first driving side connecting rod (11), and the first movable pin (17), a guide groove cam A (20) provided on the guide member (19) and a first rod groove cam A (21) provided on the first rod (12) are connected, and the first drive side connecting rod is provided (11) and the operation of the second driving side connecting rod (27), wherein the first movable pin (17) connects the rod groove cam (18), the guide groove cam A (20), and the aforementioned The first rod groove cam A (21) moves, thereby rotating the first rod (12) so as to be opposite to the first movable pin (17) across the rotating shaft of the first rod (12) The second movable pin (22) on the side is disposed on the first rod groove cam B (25) opposite to the first rod groove cam A (21) via the rotation shaft of the first rod (12), The above-mentioned driven side arc contact The driven side arc contact connecting member groove cam A (23) included in the member (14), the guide groove cam B (24) provided on the guide (19), and the driven side connecting barrel guide The driven side connecting barrel cam (26) of the member (16) is in communication, and the first rod cam B (25) is engaged with the rotation of the first rod (12) by the second movable pin (22). And the driven side arc contact connecting member groove cam A (23), the guide groove cam B (24), and the driven side connecting groove cam (26) move while the driven side arc is simultaneously contact The connecting member (14) and the driven side connecting cylinder guiding member (16) are driven in opposite directions of the first driving side connecting rod (11) and the second driving side connecting rod (27), and have a bidirectional driving mechanism. The bidirectional drive mechanism drives the driven side arc contact (5) connected to the driven side arc contact connecting member (14) and the driven side connected to the driven side connecting barrel guiding member (16). The side main contact (3) is driven in the opposite direction to the driving side electrode connected to the first driving side connecting rod (11) and the second driving side connecting rod (27). The gas shutoff device according to claim 1, wherein the second drive side connecting rod groove cam (31) of the second drive side connecting rod (27) is respectively provided by the third movable pin (30) a guide groove cam C (32) provided on the guide member (19) and a second rod groove cam A (33) provided on the second rod (28) are connected to each other, and are connected by the first drive side The rod (11) and the second driving side connecting rod (27) operate to connect the third movable pin (30) to the second driving side connecting rod groove cam (31), the guide groove cam C (32), and Moving in the second rod groove cam A (33), thereby rotating the second rod (28) to be disposed relative to the third movable pin (30) relative to the rotating shaft of the second rod (28) The fourth movable pin (34) on the opposite side is disposed on the second rod groove cam B opposite to the opposite side of the second rod groove cam A (33) via the rotation shaft of the second rod (28). 37) the driven side arc connection of the driven side arc contact connecting member (14) a point connecting member groove cam B (35) and a guide groove cam D (36) provided on the guide member (19) are in communication, and the fourth movable pin (34) is engaged with the second rod (28) Rotating, moving in the second rod groove cam B (37), the driven side arc contact connecting member groove cam B (35), and the guide groove cam D (36), and the driven side arc connection The point connecting member (14) is driven in the opposite direction of the first driving side connecting rod (11) and the second driving side connecting rod (27), and has a bidirectional driving mechanism that is connected to the aforementioned driven The driven side arc contact (5) of the side arc contact connecting member (14) is connected to the driving side electrode of the first driving side connecting rod (11) and the second driving side connecting rod (27) Drive in the opposite direction. The gas shutoff device according to claim 2, wherein the second drive side connecting rod groove cam (31) of the second drive side connecting rod (27) is respectively provided by the third movable pin (30) a guide groove cam C (32) provided on the guide member (19) and a second rod groove cam A (33) provided on the second rod (28) are connected to each other, and are connected by the first drive side The rod (11) and the second driving side connecting rod (27) operate to connect the third movable pin (30) to the second driving side connecting rod groove cam (31), the guide groove cam C (32), and Moving in the second rod groove cam A (33), thereby rotating the second rod (28) to be disposed opposite to the aforementioned axis of rotation of the second rod (28) a fourth movable pin (34) on the opposite side of the third movable pin (30) is disposed on the opposite side of the second rod groove cam A (33) via a rotation axis of the second rod (28) The second rod groove cam B (37), the driven side arc contact connecting member groove cam B (35) included in the driven side arc contact connecting member (14), and the guide member (19) provided in the guide member (19) The guide groove cam D (36) is in communication, and the second rod groove cam B (37) and the driven side arc connection are connected to the second rod groove cam B (37) by the fourth movable pin (34). The point connecting member groove cam B (35) and the guide groove cam D (36) move, and the driven side arc contact connecting member (14) is moved to the first driving side connecting rod (11) and the foregoing The driving side connecting rods (27) are driven in the opposite direction, and have a bidirectional driving mechanism that is to be connected to the driven side arc contact connecting member (14) of the driven side arc contact (5) The driving is performed in the opposite direction to the driving side electrode connected to the first driving side connecting rod (11) and the second driving side connecting rod (27). The gas interrupter according to claim 4, wherein the first drive-side connecting rod groove cam (18) has a first straight portion, and the second straight portion is provided on a different axis from the first straight portion. And a connecting portion connecting the first straight portion and the second straight portion. A gas interrupter as recited in claim 4, wherein The second driving side connecting rod groove cam (31) has a first straight portion, a second straight portion disposed on a different axis from the first straight portion, and a connecting portion connecting the first straight portion and the second straight line unit. The gas shutoff device according to claim 4, wherein the driven side arc contact connecting member groove cam A (23) and the driven side arc are provided on the driven side arc contact connecting member (14) Each of the contact connecting member groove cams B (35) is a groove cam composed of a straight portion and a curved portion, and the straight portion and the curved portion are not interlaced. The gas shutoff device according to claim 4, wherein the first drive side connecting rod groove cam (18), the second drive side connecting rod groove cam (31), and the driven side arc contact are connected Each of the member groove cam A (23) and the driven side arc contact connecting member groove cam B (35) is parallel to the opening and closing operation axis of the blocking portion.