Gas interrupter of circuit

FIELD: electricity.

SUBSTANCE: gas interrupter of a circuit includes a fixed part, a movable part, a piston and a double compression mechanism. The fixed part comprises a fixed arc-quenching contact and the first fixed closer. The movable part comprises a movable arc-quenching contact, which selectively contacts with the fixed arc-quenching contact, a cylinder, where the movable arc-quenching contact is located, and the second fixed closer, which guides motion of the cylinder. The piston is arranged in the second fixed closer. The double compression mechanism is made to move the piston in direction opposite to the direction of movable part motion, when the movable part moves to separate the fixed arc-quenching contact and the movable arc-quenching contact for interruption of the damage current.

EFFECT: reduced energy required to perform an operation of damage current interruption.

11 cl, 5 dwg

The present disclosure relates to a gas circuit breaker.

Typically, the gas circuit breaker is located on the electricity transmission line to disconnect line power transmission to check the electricity transmission line and other devices or for protecting the electricity transmission line and load devices by interrupting the current in abnormal conditions. In particular, the gas circuit breaker can safely protect the power supply system high voltage by interrupting the current damage caused by ground fault or short circuit. In more detail, in order to interrupt the current damage in an abnormal state, with strict conditions, the gas circuit breaker compresses vysokoinertsionny arc gas and injects arc-quenching gas under high pressure through a nozzle to suppress the formation of arcs, while the interrupted current.

In the case of a hybrid interrupter circuit breaker, energy arc current damage is used as the energy source of the expansion chamber to interrupt the current damage. To do this at an early stage of operation interrupt current hybrid interrupter circuit breaker you want to move a huge amount of gas from the compression chamber into the expansion chamber.

Figure 1 is a view in cross-section, illustrating the condition of injection of the gas circuit breaker of the appropriate level of technology, and figure 2 is a view in cross-section, illustrating an open state of the gas circuit breaker.

With reference to figures 1 and 2, the gas circuit breaker of the relevant prior art includes interrupting portion for interrupting current damage, and a terminating portion consists of a fixed part and the movable part. When the current is interrupted, the fixed part may not move, and the movable part can move.

In detail, the fixed portion includes a fixed arc contact 1 and the fixed main contact 3. The movable part includes a nozzle 2, the movable arc contact 4, a cylinder 5, the expansion chamber 6, the compression chamber 7 and part 8 connection device manipulation.

In interrupt mode current all the movable part is moved, using the energy adopted from the control device. At this time, the compression chamber 7 is compressed, and thus, the gas can be injected under high pressure through the expansion chamber 6 and the nozzle 2 to interrupt high current damage. The gas injected from the compression chamber 7, extinguishes the arc generated when the contacts are open, that is, an arc generated between the fixed dosagecialis the m contact 1 and the movable arc contact 4.

As described above, if the gas circuit breaker of the relevant prior art includes the arc part, divided into the compression chamber 7 and the expansion chamber 6, to use the energy of the arc to interrupt the current damage, a significant expansion energy necessary to interrupt the current. Therefore, when the gas circuit breaker is initially set, a huge amount of gas SF₆served in the compression chamber 7, to keep the compression chamber 7 high pressure. However, this increases the length of the expansion of the gas circuit breaker or the cross-sectional area of the compression chamber 7.

Embodiments of provide a gas circuit breaker, which can interrupt the current damage with less energy needed for manipulation.

In one of the embodiments of the gas circuit breaker includes: a fixed part including a fixed arc contact and the first fixed contact; a movable portion includes a movable interrupter contact, selectively entering into contact with the fixed arc contact, a cylinder in which is located a movable arc contact and a second fixed contact, the guide movement of the cylinder; then the Yan, located in the second fixed contact; and a double compression mechanism configured to move the piston in a direction opposite to the direction of movement of the movable part when the movable part is moved to separate the fixed arc contact and a movable interrupter contact to interrupt the current damage.

In another embodiment, the gas circuit breaker includes: a fixed part including a fixed arc contact and the first fixed contact; a movable portion includes a movable interrupter contact, selectively entering into contact with the fixed arc contact, a cylinder in which is located a movable arc contact and a second fixed contact, the guide movement of the cylinder, and the connection part of the device manipulation; a piston located in the second fixed contact, the connection part of the device manipulation inserted through the piston; a pin extending from the surface portion of the connection device manipulation; a roller having an end, rotatably connected to the piston and configured to rotate the pin; and a rotary shaft supporting the roller so that the roller can rotate in the second fixed is consistent the trailer.

In yet another embodiment, the gas circuit breaker includes: a fixed part including a fixed arc contact and the first fixed contact; a movable portion includes a movable interrupter contact, selectively entering into contact with the fixed arc contact, a cylinder in which is located a movable arc contact and a second fixed contact, the guide movement of the cylinder, and the connection part of the device manipulation; a piston located in the second fixed contact, the connection part of the device manipulation inserted through the piston; a pin extending from the surface portion of the connection device manipulation; a roller having end, rotatably connected with the piston and is made to rotate the pin; and a rotary shaft supporting the roller so that the roller can rotate in the second fixed contact, in this case, if the connection part of the device manipulation is moved in a predetermined direction to separate the movable interrupter contact from the fixed arc contact to interrupt the current damage, the roller is rotated by the pin on the rotary shaft, and thus the piston moves in the opposite direction specified is UPRAVLENIE.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 is a view in cross section illustrating the state of introduction of the gas circuit breaker of the appropriate level of technology.

Figure 2 is a view in cross-section, illustrating an open state of the gas circuit breaker.

Figure 3 is a view in cross section illustrating the state of introduction of the gas circuit breaker according to a variant implementation.

4 is a view in cross-section, illustrating a transition state of the gas circuit breaker.

5 is a view in cross-section, illustrating an open state of the gas circuit breaker.

DETAILED DESCRIPTION of embodiments

Further, in the materials of the present application will be described in detail the construction and operation of the gas circuit breaker relative to the accompanying drawings showing exemplary embodiments of the implementation.

Figure 3 is a view in cross section illustrating the state of introduction of the gas interrupter circuit 10 according to a variant implementation; 4 is a view in cross-section, illustrating a transition state of the gas interrupter circuit 10; and figure 5 is a view in cross-section, illustrating an open state of the gas interrupter circuit 10.

With reference to Fig.3-5, the gas circuit breaker 10 circuit current version of the implementation includes a fixed frequent and the moving part. The basic configuration of the gas interrupter circuit 10 may be similar to the configuration of the gas circuit breaker of the related art. The fixed portion includes a fixed arc contact 11 and the first fixed contact 12, which is fixed arc contact 11. The movable part includes a first nozzle 13, in which is inserted a fixed arc contact 11, the cylinder 22 connected to the end of the first nozzle 13, the second fixed contact 21 which is movably cylinder 22 and the piston 18, movably located in the second fixed contact 21.

In more detail, the inner part of the cylinder 22 includes the expansion chamber 16 and the compression chamber 17, which are separated by a partition wall 221. The communication hole 223 formed in the partition wall 221 to connect the expansion chamber 16 and the compression chamber 17.

In the cylinder 22 part 222 of the connection device manipulation goes from the Central part of the partition 221. Part 222 of the connection device manipulation passes through the compression chamber 17 and the piston 18.

The end of the first nozzle 13 is connected to the end of the cylinder 22. The second nozzle 14 passes from the side walls 221 in the direction of the first nozzle 13. The movable arc contact 15 is what about the second nozzle 14. The movable arc contact 15 also passes from the partition 221 and is located close to the inner wall of the second nozzle 14. In the state of introduction of the fixed arcing contact 11 is inserted into the first nozzle 13, and the second nozzle 14 is maintained in contact with the movable arc contact 15.

End of the piston 18 is connected to part 222 of the connection device manipulation through the double compression mechanism 19. Double compression mechanism 19 includes a pin 191 extending from the surface part 222 of the connection, the roller 193, pivotally connected with the end of the piston 18, using the hinge shaft 192, and the rotational shaft 194 through which the roller 193 rotatably connected with the inner surface of the second fixed contact 21. Due to the rotational shaft of the roller 194 193 rotatably held in the second fixed contact 21. Guide part 195 is provided in the roller 193 to guide pin 191. Guide part 195 may be a recess or a hole formed in the roller 193.

Further, in the materials of the present application will be described an exemplary operation of the gas interrupter circuit 10 according to a variant implementation.

First, as shown in figure 3, the interrupt mode of the gas interrupter circuit 10 is inserted terminating portion of the gas priyatel the circuit 10 is pulled out as as the movable part extends from the fixed part by means of the energy device manipulation of the circuit breaker. Thus, the gas interrupter circuit 10 enters the open state shown in figure 5, after the transition state, shown in figure 4.

More, when the movable part is moved by the energy applied by the device manipulation of the circuit breaker, the first nozzle 13 is moved to the right side of figure 3. Then the fixed arc contact 11 is separated from the movable arc contact 15, causing an arc of high voltage. During the transition from the state of introduction in the transition state, as the movable part is moved, the portion 222 of the connection device manipulation and the cylinder 22 is moved to the right side of figure 3. Therefore, a compression chamber 17 is reduced in volume, and thus the pressure increases. Then, when the pin 191, located on the surface part 222 of the connection device manipulation, moving in the right direction, the roller 193 is rotated clockwise in figure 3. When the roller 193 is rotated clockwise, the piston 18 moves to the left side of figure 3.

When the cylinder 22 is moved to the right side of figure 3, a compression chamber 17 is compressed. Along with this, the piston 18 moves to the left side of figure 3, when the and the roller 193 is rotated, and thus, a compression chamber 17 is additionally compressed. That is, when functioning dual compression mechanism 19, a compression chamber 17 is compressed double compression.

Therefore, when the movable part is moved by a certain distance, due to the double compression mechanism 19 compression chamber 17 may be compressed to double the degree of compression of the compression chamber prior art. That is, approximately double the amount of gas supplied to the expansion chamber in the prior art, can be fed into the expansion chamber 16 through the communication hole 223 according to a variant implementation. Due to this fixed arc contact 11 can push twice as much power, and thus, the fixed arc contact 11 can be separated from the movable arc contact 15 faster. As a result, according to a variant implementation, the shock injuries may be interrupted quickly.

If the pressure of the expansion chamber 16 becomes greater than the pressure of the compression chamber 17, due to the energy of the arc formed when the fixed arc contact 11 is separated from the movable arc contact 15, double compression mechanism is not functioning. The other is the capture, after the transition state, the pin 191 is completely separated from the guide part 195 roller 193, and thus, although part 222 of the connection device manipulation moves further to the right, the piston 18 is not moved to the left side. In addition, after the pressure of the expansion chamber 16 becomes greater than the pressure of the compression chamber 17, in interrupt mode as a compression chamber 17 is compressed in one direction instead of being compressed in two directions, the energy required to move the movable part, not increase.

In the open state, shown in figure 5 as a fixed arc contact 11 is completely separated from the movable arc contact 15, the inner portion of the first nozzle 13 is connected with the expansion chamber 16. Hence, the arc of high voltage generated when the fixed arc contact 11 and the movable arc contact 15 are separated, can quickly be extinguished under high pressure arc-quenching gas supplied into the expansion chamber 16. That is, the arc-quenching gas is discharged from the expansion chamber 16 through the passage formed between the end of the first nozzle 13 and the second nozzle 14. As the arc gas is discharged from the expansion chamber 16 under high pressure and MSE of the spine, the arc generated when the fixed arc contact 11 and the movable arc contact 15 are separated, can be quickly repaid. As a result, in addition to the rapid extinction of the arc, the energy transfer from the arc into the expansion chamber 16 can also be prevented.

In addition, according to a variant implementation, a large amount of gas compressed in the compression chamber 17 can be fed into the expansion chamber 16 within a short time of operation of the circuit breaker without having to increase the internal volume of the compression chamber 17 through the double compression mechanism 19.

As described above, according to the options exercise, to interrupt the current damage, a compression chamber is compressed double compression image by adding roller and the movable support compression chamber to the existing structure of the compression chamber, are made so as to be compressed by movement in one direction. Therefore, according to the options exercise, a larger amount of gas can be supplied from the compression chamber into the expansion chamber when the movable part is moved by the same distance as the movable part of the relevant prior art. In addition, when the concept of the embodiments are applied to a hybrid of the WMD interrupter for the circuit breaker, a larger amount of gas can be supplied at an early stage of the interruption of the current, in which the gas expansion chamber is expanded, using the energy of the arc and, thus, the shock injuries may be interrupted more efficiently.

In addition, according to the options of implementation, because the dual compression is performed only when the initial movement of the movable part, the energy required for manipulation, can be reduced by interrupting the current damage. That is, according to the options of implementation, a compression chamber undergoes a double compression only at an early stage of operation, and then is compressed single image by moving the movable part, so that the energy required for manipulation, did not increase during the operation to interrupt the current damage.

While the options for implementation were described with reference to a number of illustrative embodiments, it should be clear that numerous other modifications and variations of the implementation can be developed by specialists in the art that will fall within the nature and scope of the principles of this disclosure. More precisely, different variants and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, drawings and prilog the emnd claims.

In addition to variations and modifications in the component parts and/or assemblies of the alternative uses will also be apparent to experts in the given field of technology.

1. Gas circuit breaker, comprising:
a fixed part containing a fixed arc contact and the first fixed contact;
the movable part containing the movable interrupter contact, selectively entering into contact with the fixed arc contact, a cylinder in which is located a movable arc contact and a second fixed contact, the guide movement of the cylinder;
a piston located in the second fixed contact; and
double compression mechanism configured to move the piston in a direction opposite to the direction of movement of the movable part when the movable part is moved to separate the fixed arc contact and a movable interrupter contact to interrupt the current damage.

2. Gas circuit breaker according to claim 1, in which the movable part further comprises a connection part of the device manipulation, passing from the side wall separating the inner space of the cylinder on the compression chamber and the expansion chamber, and the connection part of the device manipulation sun is assetsa through the piston, and
in which the movable interrupter contact passes from the other side of the partition and is located in the expansion chamber.

3. Gas circuit breaker according to claim 2, additionally containing a second nozzle surrounding the movable interrupter contact.

4. Gas circuit breaker according to claim 2, in which the end of double compression mechanism is connected with the side of the piston in the second fixed contact in a state in which the end of double compression mechanism at least partially rotates, thus
the other end of the double compression mechanism selectively connected with a part of the connection device manipulation.

5. Gas circuit breaker, comprising:
a fixed part containing a fixed arc contact and the first fixed contact;
the movable part containing the movable interrupter contact, selectively entering into contact with the fixed arc contact, a cylinder in which is located a movable arc contact, the second fixed contact, the guide movement of the cylinder, and the connection part of the device manipulation;
a piston located in the second fixed contact, and a connection part of the device manipulation inserted through the piston;
a pin extending from the surface of the part to connect the surveillance device manipulation;
roller having end rotatably connected with the piston and is made to rotate the pin; and
the rotational shaft supporting the roller so that the roller can rotate in the second fixed contact.

6. Gas circuit breaker according to claim 5, in which the guide part is located at the other end of the roller, so that the pin selectively picked up the guide part.

7. Gas circuit breaker according to claim 6, in which the guide portion is a recess or hole in which the selectively captured pin.

8. Gas circuit breaker according to claim 5, in which, when the connection part of the device manipulation is moved, the pin pushes the other end of the roller to rotate the roller, and
the piston moves in the direction opposite to the direction of movement of the parts of the connection device manipulation, by means of rotation of the roller.

9. Gas circuit breaker of claim 8 in which the roller is rotated by the pin up until the movable interrupter contact separates from the fixed arc contact.

10. Gas circuit breaker of claim 8 in which, after the movable interrupter contact separates from the fixed arc contact, the pin is separated from the roller.

11. Gas circuit breaker of claim 8 in which the piston moves R the face in a fraction of a period of time, in which interrupts the current damage.