JP2022178632A - Gas circuit breaker and adsorbent device - Google Patents

Abstract

To provide a gas circuit breaker and an adsorbent device capable of suppressing a rapid decline in adsorption capacity of an adsorbent and realizing stable adsorption performance.SOLUTION: A gas circuit breaker 1 includes a container 3 filled with an insulating gas, a first electrode 61 disposed within the container 3, a second electrode 62 that is arranged in the container 3 and can be switched between a contact position in contact with the first electrode 61 and a spaced position away from the first electrode 61, a nozzle 73 that extinguishes an arc discharge A1 by spraying insulating gas over the arc discharge A1 generated between the second electrode 62 and the first electrode 61 at the spaced position, an adsorbent case 81 that is arranged in the container 3, has an intake port 87 capable of taking in at least one of the cracked gas and moisture generated when the arc is extinguished, and contains an adsorbent K1 that adsorbs at least one of the cracked gas and moisture, and a stirring unit that stirs the adsorbent K1 accommodated in the adsorbent case 81 within the adsorbent case 81.SELECTED DRAWING: Figure 3

Description

The present invention relates to gas circuit breakers and adsorbent devices.

Patent Document 1 describes a conventional gas circuit breaker. The gas circuit breaker described in Patent Document 1 includes a pair of contactors, an insulating nozzle that extinguishes an arc generated when the pair of contactors are separated, and a container that houses them. The container is filled with insulating gas.

The insulating nozzle produces decomposition gases when the arc is extinguished. This decomposition gas may reduce the insulating performance of the insulating gas or cause corrosion inside the device. Therefore, in the gas circuit breaker described in Document 1, an adsorbent for adsorbing the cracked gas is spread on the inner surface of the container. Thus, in the invention described in Patent Document 1, the decomposition gas is adsorbed to maintain the insulating performance of the insulating gas.

Japanese Patent Application Laid-Open No. 2007-189798

By the way, when the decomposed gas is adsorbed by the adsorbent, the decomposed gas is adsorbed in contact with the surface of the adsorbent. Therefore, of the adsorbent spread in the container, the surface facing the space inside the container adsorbs the cracked gas, but only the surface can adsorb the cracked gas. For this reason, in the invention described in Patent Document 1, there is a problem that the adsorption capacity of the adsorbent may be rapidly lowered, resulting in unstable adsorption performance.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a gas circuit breaker and an adsorbent device capable of suppressing a rapid decline in adsorption capacity of an adsorbent and realizing stable adsorption performance.

A gas circuit breaker according to one aspect of the present invention comprises a container filled with an insulating gas, a first electrode arranged in the container, and a contact arranged in the container and in contact with the first electrode. a second electrode that is switched between a position and a spaced position away from the first electrode; a nozzle for blowing to extinguish the arc discharge; and an intake port disposed in the container for taking in at least one of cracked gas and moisture generated when the arc is extinguished, wherein the cracked gas and moisture are combined. and a stirring unit for stirring the adsorbent contained in the adsorbent case in the adsorbent case.

An adsorbent device according to one aspect of the present invention includes a container filled with an insulating gas, a pair of electrodes arranged in the container and switched to be in contact with or separated from each other, and when the pair of electrodes are separated from each other, and a nozzle for extinguishing the arc discharge by spraying the insulating gas against the arc discharge generated between the pair of electrodes, wherein the arc discharge is extinguished. an adsorbent case having an intake port capable of taking in at least one of cracked gas and water generated when arcing and containing an adsorbent that adsorbs at least one of the cracked gas and water; a stirring unit for stirring the contained adsorbent in the adsorbent case.

The gas circuit breaker and the adsorbent device according to the above aspects of the present invention have the advantage of being able to suppress rapid deterioration of the adsorption capacity of the adsorbent and realize stable adsorption performance.

FIG. 4 is a cross-sectional view of the gas circuit breaker according to one embodiment of the present invention when the second electrode is in the contact position; FIG. 4 is a cross-sectional view of the same gas circuit breaker when the second electrode is at the spaced position. It is a schematic sectional drawing in the vertical surface of the adsorption agent apparatus of a gas circuit breaker same as the above. It is a schematic sectional drawing in the vertical surface of the gas circuit breaker which concerns on the modification 1. FIG. It is a schematic sectional drawing in the vertical surface of the gas circuit breaker which concerns on the modified example 2. FIG. FIG. 11 is a schematic cross-sectional view along a vertical plane of an adsorbent device of a gas circuit breaker according to Modification 3;

<Embodiment>
A gas circuit breaker 1 according to this embodiment is a circuit breaker that opens and closes an electric circuit in a container 3 filled with an insulating gas. The gas circuit breaker 1 is used, for example, as one component of a gas insulated switchgear (GIS). As the gas circuit breaker 1 according to the present invention, for example, a mechanical puffer type in which the volume of the puffer chamber is changed mechanically, a thermal puffer type combined with a magnetic drive, a blast type, a series type in which a mechanical puffer chamber and a thermal puffer chamber are provided in series. A thermal puffer type and the like are included. The thermal puffer type gas circuit breaker combined with a magnetic drive rotates the arc in a gas atmosphere by the magnetic force generated by the drive coil. The circuit breaker is constructed so as to obtain both a heat puffer action that blows against the arc when the gas is released. In this embodiment, a mechanical puffer type gas circuit breaker 1 will be described as an example.

The gas circuit breaker 1 includes a circuit breaker body 2 and an adsorbent device 8, as shown in FIG.

(1) Circuit Breaker Main Body The circuit breaker main body 2 constitutes the main body of the gas circuit breaker 1 . The circuit breaker body 2 includes a container 3 , a pair of conductors 41 and 42 and a current interrupting device 5 .

(1.1) Container The container 3 is the housing of the gas circuit breaker 1 . The material of the container 3 is not particularly limited, and may be metal, insulator, or the like, for example. The container 3 includes a container body portion 31 , a pair of tubular portions 32 , and spacers 33 attached inside each tubular portion 32 .

The container body portion 31 is a portion that constitutes the main body of the container 3 . The container body 31 is hollow. The shape of the container main body 31 is not particularly limited, and examples thereof include a cylindrical shape, a rectangular tube shape, a box shape, and the like. The container main body 31 of this embodiment is formed in a cylindrical shape with a central axis extending along the horizontal plane.

The tubular portion 32 is electrically connected to a first conductor 41 electrically connected to one electrode (first electrode 61) of the pair of electrodes of the current interrupting device 5 and the other electrode (second electrode 62). The second conductor 42 connected to is the part that is passed through the inside. The tubular portion 32 protrudes from the container body portion 31 in a direction intersecting the central axis of the container body portion 31 . The interior of the tubular portion 32 communicates with the interior of the container body portion 31 .

The spacer 33 supports the conductors 41 and 42 while passing the conductors 41 and 42 through the tubular portion 32 . The spacer 33 is made of an electrically insulating material. The spacers 33 support the conductors 41 and 42 along the central axis of the tubular portion 32 without contacting the tubular portion 32 .

A housing space S<b>1 for housing the current interrupting device 5 is formed inside the container 3 . The accommodation space S1 is kept airtight and filled with an insulating gas. The accommodation space S<b>1 is a space partitioned by the container body 31 , the base of the tubular portion 32 , and the spacer 33 in this embodiment. However, in the present invention, the accommodation space S1 does not have to be partitioned by the spacer 33 as long as it is kept airtight, and even if it is a space smaller than the container body 31 in the container body 31, good.

The insulating gas is a gas having insulating and arc-extinguishing properties, and an inert gas is used. Examples of the insulating gas include SF ₆ gas (sulfur hexafluoride gas), CO ₂ gas (carbon dioxide gas), a mixed gas of CF ₃ I (trifluoromethane iodide) and N ₂ (nitrogen), and CF ₃ I. and _CO2 gas, argon gas, helium gas, etc. are used.

(1.2) Current Interrupting Device The current interrupting device 5 is a device that switches between an open circuit and a closed circuit in the electric circuit between the first conductor 41 and the second conductor 42 . The current interrupting device 5 includes a current interrupting section 6 and an arc extinguishing section 7, as shown in FIG. The current interrupting device 5 is supported by a pair of insulating supports 51 inside the container body 31 .

(1.2.1) Current Interrupting Section The current interrupting section 6 includes a first electrode 61 , a second electrode 62 and a driving device 63 . The current interrupter 6 can switch the second electrode 62 between a position (contact position) in contact with the first electrode 61 and a position (separate position) away from the first electrode 61 .

The first electrode 61 is a contact electrically connected to the first conductor 41 . The first electrode 61 extends along the central axis of an exhaust pipe 74 which will be described later, and is supported by the container 3 via the exhaust pipe 74 and the insulating support 51 . The first electrode 61 according to this embodiment is fixed to the container 3, that is, it is a fixed contact.

The second electrode 62 is a contact electrically connected to the second conductor 42 . The second electrode 62 extends along the central axis of a cylinder 71 to be described later and is fixed to the cylinder 71 . Therefore, as shown in FIG. 2, the second electrode 62 moves along the central axis together with the cylinder 71 when the cylinder 71 moves along the central axis. The second electrode 62 according to this embodiment is a movable contact that is movable with respect to the first electrode 61 .

The central axis of cylinder 71 is along the central axis of container 3 . Therefore, the second electrode 62 can reciprocate along the central axis of the container 3 between the contact position (FIG. 1) and the separation position (FIG. 2). The second electrode 62 in the contact position contacts the first electrode 61 thereby closing the electrical path between the first conductor 41 and the second conductor 42 . On the other hand, the second electrode 62 at the spaced position is separated from the first electrode 61 , thereby opening the electric circuit between the first conductor 41 and the second conductor 42 . The second electrode 62 is movably supported with respect to the container 3 via the driving device 63 and the insulating support 51 .

A driving device 63 drives the second electrode 62 and the cylinder 71 . The second electrode 62 and the cylinder 71 are moved between the contact position and the separated position along the central axis of the cylinder 71 by the driving device 63 . The driving device 63 is not particularly limited, and examples thereof include electric cylinders, pneumatic cylinders, hydraulic cylinders, motors, linear actuators, solenoids, and the like.

(1.2.2) Arc-extinguishing portion The arc-extinguishing portion 7 is an arc discharge A1 (arc) generated between the first electrode 61 and the second electrode 62 when the second electrode 62 is switched to the separated position. extinguish the arc. The arc extinguishing section 7 includes a cylinder 71 , a piston 72 , a nozzle 73 and an exhaust pipe 74 .

Cylinder 71 is formed in a cylindrical shape. Inside the cylinder 71, as described above, the second electrode 62 is arranged along the central axis. A nozzle 73 is attached to one of the ends of the cylinder 71 in the central axis direction, which faces the first electrode 61 . A piston 72 is attached between the cylinder 71 and the second electrode 62 so as to be movable with respect to the cylinder 71 . The piston 72 is movably attached to the cylinder 71 , but in this embodiment is attached immovably to the container 3 .

The nozzle 73 is a portion that discharges the insulating gas inside the cylinder 71 . The nozzle 73 is formed in a cylindrical shape, and as shown in FIG. 1, the first electrode 61 is passed through the nozzle 73 when the second electrode 62 is switched to the contact position. On the other hand, when the second electrode 62 is switched to the separated position, as shown in FIG. A1 is generated inside nozzle 73 .

Here, a chamber surrounded by the inner peripheral surface of the cylinder 71, the piston 72 and the second electrode 62 is called a "puffer chamber 75". The puffer chamber 75 and the nozzle 73 communicate with each other via a channel 76 . When the cylinder 71 and the second electrode 62 move along the center axis toward the contact position, the pressure in the puffer chamber 75 decreases and the puffer chamber 75 is filled with insulating gas, as shown in FIG. On the other hand, when the cylinder 71 and the second electrode 62 move along the center axis toward the separated position, the insulating gas in the puffer chamber 75 is pressurized as shown in FIG. It is discharged from the nozzle 73 through the channel 76 .

The insulating gas passing through nozzle 73 is sprayed onto arc discharge A1 generated between first electrode 61 and second electrode 62 . Thereby, the arc discharge A1 generated between the first electrode 61 and the second electrode 62 can be extinguished.

The insulating gas emitted from the nozzle 73 flows into the exhaust stack 74 . The insulating gas that has flowed into the exhaust pipe 74 exits the exhaust pipe 74 from the end opposite to the second electrode 62 among the ends of the exhaust pipe 74 in the central axis direction. The insulating gas coming out of the exhaust pipe 74 convects inside the container 3 .

(2) Adsorbent Device The adsorbent device 8 is a device that takes in and adsorbs a small amount of moisture (hereinafter referred to as "decomposed gas, etc.") contained in the decomposition gas and insulating gas generated during arc extinguishing. By adsorbing the decomposed gas or the like with the adsorbent device 8, it is possible to suppress deterioration of the insulation and arc-extinguishing properties of the insulating gas.

When the insulating gas is sprayed onto the arc discharge A1, the heat of the arc discharge A1 turns part of the insulating gas into plasma, dissociating and recombining the molecules of the insulating gas, and generating a cracked gas. For example, if the insulating gas is a gas containing CF ₃ I, a cracked gas containing iodine, hydrogen fluoride, hydrogen iodide, and the like is generated. Further, for example, when the insulating gas contains CO ₂ , oxygen ions generated by dissociation of CO ₂ molecules react with the metal to generate decomposition gas containing CO gas. These decomposed gases and moisture contained in the insulating gas may cause deterioration of the insulating properties and arc-extinguishing properties of the insulating gas.

The adsorbent device 8 includes, as shown in FIG. 3, an adsorbent case 81 containing an adsorbent K1 and a stirring section 9. As shown in FIG. The adsorbent K1 contained in the adsorbent case 81 has a contact surface ( The adsorption performance of the adsorbent K1 particles in the vicinity of the surface) tends to decrease. Therefore, in the adsorbent device 8 according to the present embodiment, the stirring unit 9 is provided to stir the adsorbent K1 in the adsorbent case 81, thereby suppressing a rapid decrease in the adsorption capacity of the adsorbent K1 and stabilizing the adsorption capacity. Adsorption performance can be realized.

Adsorbent K1 is not particularly limited as long as it can adsorb cracked gas. can do. The term "adsorbent K1" used herein means an aggregate of adsorbent particles. The adsorbent K1 may be, for example, solid, granular, powdery, etc., and is not particularly limited.

(2.1) Adsorbent Case The adsorbent case 81 is a case that accommodates the adsorbent K1. The adsorbent case 81 is arranged within the housing space S1 of the container 3 . In this embodiment, the adsorbent case 81 is arranged in the vicinity of the contacting first electrode 61 and second electrode 62 on the bottom surface of the container 3. It may be arranged at any position such as an internal corner between a face and a side face.

The shape of the adsorbent case 81 is not particularly limited as long as it can accommodate the adsorbent K1. Moreover, the material of the adsorbent case 81 is not particularly limited, and examples thereof include metal, synthetic resin, cloth, nonwoven fabric, and woven cloth. The adsorbent case 81 is detachably attached to the container 3, and when replacing the adsorbent K1, the adsorbent case 81 can be replaced along with the adsorbent case 81. Alternatively, the adsorbent case 81 can be removed from the container 3. Above, the adsorbent K1 can be replaced and attached to the container 3 again.

The adsorbent case 81 according to this embodiment includes a bottom wall 811, a plurality of peripheral walls 812, and a top wall 813, as shown in FIG. The bottom wall 811, the peripheral wall 812 and the top wall 813 are made of mesh material. In this embodiment, each mesh of the mesh material serves as an intake port 87 that takes the decomposed gas into the adsorbent case 81 .

A "mesh material" as used herein means a material having a large number of through holes. Examples of mesh materials include net materials, punching metals, expanded metals, porous plate materials, and honeycomb plates.

In the mesh of the adsorbent case 81, it is preferable that the dimension L1 between the opposing sides is smaller than the average particle size of the adsorbent K1. The term "length L1 between opposite sides" as used herein means the dimension between the opening edges of the mesh. is the diameter. This can prevent the adsorbent K1 from coming out of the adsorbent case 81 . The “average particle size” referred to here can be the average value of the results measured by the laser diffraction method/scattering method according to JIS Z 8825.

(2.2) Stirring Section The stirring section 9 stirs the adsorbent K1 accommodated in the adsorbent case 81 inside the adsorbent case 81 . According to the stirring unit 9, the adsorbent K1 deposited in the adsorbent case 81 can be switched between the surface side and the back side in the deposition direction, and the adsorbent K1 whose adsorption performance is not impaired can be transferred to the surface side. can be placed in As a result, it is possible to suppress a sudden deterioration in the adsorption performance of the adsorbent K1.

The stirring unit 9 can take various forms as long as it stirs the adsorbent K1 accommodated in the adsorbent case 81 within the adsorbent case 81, as will be described later in the modified examples, but this embodiment can take any form. Now, the blade 91 agitates the adsorbent K1. The motion of the blade 91 in the adsorbent case 81 includes, for example, rotary motion, swivel motion, linear motion, swing motion, and vibration.

The stirring unit 9 according to this embodiment includes a plurality of blades 91, a shaft 92, a driving unit 93, and a control unit 94, as shown in FIG.

The blade 91 is arranged inside the adsorbent case 81 . The blade 91 is moved within the adsorbent case 81 by the drive unit 93, thereby agitating the adsorbent K1. Each blade 91 is formed in an airfoil shape and is formed in a shape suitable for stirring the adsorbent K1. A plurality of blades 91 are attached around the shaft 92 . The shaft 92 is connected to the output shaft of the driving portion 93 and rotated by the driving portion 93 . Thereby, the plurality of blades 91 can rotate around the shaft 92 as a rotation axis.

The drive unit 93 serves as a drive source for the blade 91 . The drive unit 93 is configured by a motor that rotates the shaft 92 in this embodiment. However, if the blade 91 is to be moved in a linear motion, swinging motion, or other motion, the drive unit 93 may be, for example, an air cylinder, a solenoid, a linear actuator, or the like, in addition to the motor.

The control section 94 controls the driving section 93 . The control unit 94 is configured by a control circuit having a microprocessor as a main component, for example. The control unit 94 has a timer and can control the drive unit 93 using the timer.

When the driving device 63 of the current interrupting device 5 operates and the second electrode 62 is switched to the separated position, the control section 94 receives the electric signal and starts operating the driving section 93 accordingly. The control unit 94 stops the operation of the driving unit 93 after a predetermined period of time has elapsed. The "predetermined time" as used herein means a time during which the adsorbent K1 can be appropriately agitated. The stirring time is not particularly limited because it varies depending on the amount of the adsorbent K1.

Further, the control unit 94 may start the operation of the driving unit 93 after a predetermined time has passed after receiving the electric signal indicating that the second electrode 62 has been switched to the separated position.

(3) Operation An example of the operation of the gas circuit breaker 1 of this embodiment will be described below.

As shown in FIG. 1, when the second electrode 62 is switched to the contact position, the first electrode 61 and the second electrode 62 are brought into contact and the electrical path between the first conductor 41 and the second conductor 42 is closed. When the second electrode 62 is switched from this state to the separated position, the first electrode 61 and the second electrode 62 are separated from each other, and the electric path between the first conductor 41 and the second conductor 42 is separated as shown in FIG. is opened, and an arc discharge A1 is generated between the second electrode 62 and the first electrode 61 at the separated position. At this time, since the puffer chamber 75 pressurizes the insulating gas, the pressurized insulating gas passes through the flow path 76 and is sprayed from the nozzle 73 to the arc discharge A1. As a result, the arc discharge A1 is extinguished.

The decomposition gas generated by heating the insulating gas by the arc discharge A1 flows into the exhaust stack 74 and into the container 3 together with the insulating gas. The cracked gas that has flowed into the container 3 flows into the adsorbent case 81 and is adsorbed by the adsorbent K1. The blade 91 , which has started to operate when the second electrode 62 is switched to the separated position, agitates the adsorbent K1 in the adsorbent case 81 . The controller 94 stops the movement of the blade 91 after a predetermined period of time has elapsed.

<Modification>
The above embodiment is but one of the various embodiments of the present invention. The embodiment can be modified in various ways according to the design etc., as long as the object of the present invention can be achieved. Modifications described below can be applied in combination as appropriate.

(1) Modification 1
The adsorbent device 8 according to the above-described embodiment includes a blade 91, a shaft 92, and a drive unit 93 as the stirring unit 9, but the stirring unit 9 according to Modification 1 includes a pipe 95 as shown in FIG. The adsorbent K1 is agitated by blowing pressurized insulating gas into the adsorbent case 81 .

The piping 95 blows pressurized insulating gas into the adsorbent case 81 to agitate the adsorbent K1 in the adsorbent case 81 . One end of the pipe 95 in the longitudinal direction is open to the flow path 76 (this opening is referred to as an “injection port”), and the other end is open to the adsorbent case 81 . In this embodiment, the pipe 95 is composed of a flexible, heat-resistant hose, but may be, for example, a tube, a rigid steel pipe, a resin pipe, or the like. In addition, although the inlet of the pipe 95 is formed in the peripheral wall 812 , it may be formed in the top wall 813 . Further, the pipe 95 may be branched on the way and connected to a plurality of locations of the adsorbent case 81 .

When the second electrode 62 is switched to the separated position, the puffer chamber 75 pressurizes the insulating gas accordingly. Then, the pressurized insulating gas passes through the flow path 76 toward the nozzle 73 , but part of the insulating gas is blown into the adsorbent case 81 through the pipe 95 branched from the flow path 76 . The insulating gas blown into the adsorbent case 81 agitates the adsorbent K1 within the adsorbent case 81 .

In this modification, the pipe 95 is branched from the flow path 76 leading to the puffer chamber 75, but the insulation gas is added by using a pressurizing mechanism other than the puffer chamber 75, such as a compressor or a cylinder device. It may be pressurized and blown into the adsorbent case 81 through the pipe 95 .

(2) Modification 2
In this modification, as shown in FIG. 5, the stirring part 9 is moved by a power transmission device 96 that moves the adsorbent case 81 by power output from a drive source (here, the second electrode 62 and/or the cylinder 71). It is configured.

The power transmission device 96 is fixed to the cylinder 71 and fixed to the adsorbent case 81 . The adsorbent case 81 is movable with respect to the container 3 . Therefore, the power transmission device 96 moves in conjunction with the movement of the cylinder 71 (that is, the movement of the second electrode 62), moves the adsorbent case 81, and can agitate the adsorbent K1.

Materials for the power transmission device 96 include, for example, rigid materials such as metal, synthetic resin, and carbon. Methods for fixing the power transmission device 96 and the cylinder 71 include, for example, welding, screwing, pinning, riveting, fitting, insertion, adhesion, and welding. When the power transmission device 96 is directly attached to the second electrode 62, it is preferable to use a material having insulating properties.

Although the end of the power transmission tool 96 is attached to the adsorbent case 81 in this modified example, the adsorbent case 81 may be attached to any part of the power transmission tool 96 . Moreover, the power transmission tool 96 does not have to be fixed to the adsorbent case 81 . You can vibrate.

In this modified example, the drive source of the power transmission device 96 was the second electrode 62 and/or the cylinder 71, but for example, a drive source such as a motor, air cylinder, solenoid, linear actuator, vibrator, etc. may be provided separately. , the output from the drive source may be transmitted to the adsorbent case 81 via the power transmission device 96 .

(3) Modification 3
The adsorbent case 81 according to the above-described embodiment has only the accommodating portion 82 that accommodates the adsorbent K1. , a receiving portion 83 for receiving fragments K2 of the adsorbent K1, etc. is provided.

The accommodating part 82 is a part which accommodates the adsorbent K1. A bottom surface 84 of the housing portion 82 is made of a mesh material having a plurality of meshes (this will be referred to as a "first mesh material 85"). Further, the surfaces other than the bottom surface 84 of the housing portion 82 are also made of a mesh material having a plurality of meshes (this will be referred to as a "second mesh material 86").

The meshes of the first mesh material 85 are formed such that the dimension L2 between the facing portions is smaller than the average particle size of the adsorbent K1. Therefore, when the adsorbent particles are cracked or pulverized by agitation to form fragments K2, the fragments K2 pass through the bottom surface 84 of the accommodating portion 82 and move to the receiving portion 83.

A dimension L1 between opposing meshes of the second mesh material 86 is formed to be smaller than a dimension L2 between opposing meshes of the first mesh material 85 . That is, the mesh opening area of the second mesh material 86 is smaller than the mesh opening area of the first mesh material 85 . Therefore, the fragments K<b>2 of the adsorbent particles can be prevented from leaking from the adsorbent case 81 . As a result, it is possible to suppress the fragments K2 from dispersing in the atmosphere of the insulating gas, and to prevent the insulation performance from being affected.

The receiving portion 83 is provided below the accommodating portion 82 . Although the receiving portion 83 is made of the same mesh material as the second mesh material 86 in this embodiment, it may be made of a plate material without mesh. Also, the receiving portion 83 may be detachably attached to the accommodating portion 82 .

In addition, in this modification, as the stirring unit 9, a configuration including the blade 91, the shaft 92, and the driving unit 93 is illustrated. Case 81 may be applied.

(4) Other Modifications Modifications of the embodiment are listed below.

Although the gas circuit breaker 1 according to this embodiment is used as one component of the gas insulated switchgear (GIS), it may be used alone.

In the adsorbent case 81 according to the above-described embodiment, the intake port is made up of meshes of the mesh material. It may be configured to have two outlets.

In the gas circuit breaker 1 according to the above embodiment, the first electrode is a fixed contact and the second electrode is a movable contact. Both the first electrode and the second electrode may be movable electrodes.

In the gas circuit breaker 1 according to the above embodiment, the adsorbent K1 is configured to adsorb both cracked gas and moisture, but in the present invention, the adsorbent K1 is configured to adsorb only moisture. may be That is, the adsorbent K1 according to the present invention may be one that adsorbs at least one of cracked gas and moisture.

In this specification, expressions with "substantially" such as "substantially parallel" or "substantially orthogonal" may be used. For example, "substantially parallel" means substantially "parallel", and includes not only a strictly "parallel" state but also an error of several degrees. The same applies to expressions with other "abbreviations".

In addition, in this specification, expressions such as "end" and "end" are used to distinguish between the presence or absence of "... portion". For example, "edge" refers to the distal portion of an object, while "edge" refers to an area of definite extent that includes the "edge". Any point within a certain range including the edge is regarded as an "edge". The same applies to other expressions with "... part".

<Summary>
As described above, the gas circuit breaker 1 according to the first aspect includes the container 3, the first electrode 61, the second electrode 62, the nozzle 73, the adsorbent case 81, and the stirring section 9. Prepare. The container 3 is filled with an insulating gas. The first electrode 61 is arranged inside the container 3 . The second electrode 62 is arranged in the container 3 and can be switched between a contact position in which it contacts the first electrode 61 and a spaced position in which it separates from the first electrode 61 . The nozzle 73 blows insulating gas against the arc discharge A1 generated between the second electrode 62 and the first electrode 61 at the spaced position to extinguish the arc discharge A1. The adsorbent case 81 is arranged in the container 3, has an intake port 87 capable of taking in at least one of the decomposed gas and moisture generated when the arc is extinguished, and adsorbs at least one of the decomposed gas and moisture. Contains agent K1. The stirring unit 9 stirs the adsorbent K<b>1 contained in the adsorbent case 81 inside the adsorbent case 81 .

According to this aspect, the adsorbent K1 housed in the adsorbent case 81 can be stirred by the stirring unit 9, thereby suppressing a rapid decrease in the adsorption capacity of the adsorbent K1 and realizing stable adsorption performance. can do. As a result, even when using the same amount of adsorbent K1 as in the conventional case, the adsorption capacity can be increased and the life of the adsorbent K1 can be extended as compared with the conventional case.

In the gas circuit breaker 1 according to the second aspect, in the first aspect, the stirring unit 9 includes a blade 91 arranged inside the adsorbent case 81 and a driving unit 93 that moves the blade 91 inside the adsorbent case 81. , has

According to this aspect, the adsorbent K1 contained in the adsorbent case 81 can be agitated by the blade 91, so that the adsorbent K1 can be effectively agitated in the region where the blade 91 moves.

In the gas circuit breaker 1 according to the third aspect, in the second aspect, the stirring section 9 has the shaft 92 that serves as the rotating shaft of the blade 91 , and the drive section 93 is a motor that rotates the shaft 92 .

According to this aspect, the movement of the blade 91 can be realized with a simplified configuration.

In the gas circuit breaker 1 according to the fourth aspect, in the first aspect, the stirring unit 9 blows the pressurized insulating gas into the adsorbent case 81 to stir the adsorbent K1 in the adsorbent case 81. It has a pipe 95 .

According to this aspect, the compressed insulating gas can be used for agitation, and an increase in the number of parts can be suppressed.

In the fourth aspect, the gas circuit breaker 1 according to the fifth aspect further includes a puffer chamber 75 for pressurizing the insulating gas and a flow path 76 connecting the puffer chamber 75 and the nozzle 73, and the pipe 95 is It branches off from the flow path 76 .

According to this aspect, in the structure for stirring using the pipe 95, a simplified structure can be realized while suppressing an increase in the number of parts.

In the gas circuit breaker 1 according to the sixth aspect, in the first aspect, the stirring section 9 is a power transmission tool 96 that moves the adsorbent case 81 by power output from the drive source.

According to this aspect, since the adsorbent case 81 can be moved and stirred, the adsorbent K1 housed in the adsorbent case 81 can be stirred throughout.

In the gas circuit breaker 1 according to the seventh aspect, the power transmission tool 96 is configured to transmit the movement of the second electrode 62 to the adsorbent case 81 in the sixth aspect.

According to this aspect, since the adsorbent case 81 can be moved by using the movement of the second electrode 62, which is a movable contact, as a power source, a new drive source is not required, and a simplified configuration can be realized. can be done.

In the gas circuit breaker 1 according to the eighth aspect, in any one of the first to seventh aspects, the adsorbent case 81 accommodates the adsorbent K1, and at least part of the bottom surface 84 is made of a mesh material. It has a storage portion 82 and a receiving portion 83 provided below the storage portion 82, and the mesh material is configured such that the dimension between the meshes facing each other is smaller than the average particle diameter of the adsorbent K1. there is

According to this aspect, the fragments K2 of the adsorbent K1 that may be generated by stirring the adsorbent K1 can be collected in the receiving portion 83, and the recovery work is easy.

In the gas circuit breaker 1 according to the ninth aspect, in the eighth aspect, the mesh material is the first mesh material 85, and at least a part of the portion other than the bottom surface 84 of the housing portion 82 has a plurality of intake ports 87 The opening area of each mesh of the second mesh material 86 is smaller than the opening area of each mesh of the first mesh material 85 .

According to this aspect, it is possible to suppress the fragments K2 of the adsorbent K1 from leaking into the container 3 and prevent the fragments K2 from affecting the insulation in the container 3 .

The adsorbent device 8 according to the tenth aspect includes a container 3 filled with an insulating gas, a pair of electrodes arranged in the container 3 and switched to contact or separate from each other, and when the pair of electrodes are separated and a nozzle 73 for extinguishing the arc discharge A1 by blowing insulating gas against the arc discharge A1 generated between a pair of electrodes. Adsorbent case 81 has intake port 87 capable of taking in at least one of decomposed gas and moisture generated when arc discharge A1 is extinguished, and accommodates adsorbent K1 that adsorbs at least one of decomposed gas and moisture. and a stirring unit 9 for stirring the adsorbent K1 accommodated in the adsorbent case 81 within the adsorbent case 81 .

According to this aspect, by installing the adsorbent device 8 in the existing gas circuit breaker 1, it is possible not only to absorb the decomposition gas, but also to suppress a rapid decrease in the adsorption capacity of the adsorbent K1. , stable adsorption performance can be achieved.

1 Gas Circuit Breaker 3 Container 61 First Electrode 62 Second Electrode 73 Nozzle 75 Puffer Chamber 76 Channel 8 Adsorbent Device 81 Adsorbent Case 82 Accommodating Part 83 Receiving Part 84 Bottom 85 First Mesh Material 86 Second Mesh Material 87 Intake Mouth 9 Stirrer 91 Blade 92 Shaft 93 Actuator 95 Piping 96 Power transmission tool A1 Arc discharge K1 Adsorbent

Claims (10)

a container filled with insulating gas;
a first electrode disposed within the container;
a second electrode disposed within the container and switchable between a contact position in contact with the first electrode and a spaced position away from the first electrode;
a nozzle for extinguishing the arc discharge by spraying the insulating gas against the arc discharge generated between the second electrode and the first electrode at the spaced position;
An adsorption that is arranged in the container and has an intake port capable of taking in at least one of the cracked gas and moisture generated when the arc is extinguished, and that contains an adsorbent that adsorbs at least one of the cracked gas and moisture. a drug case;
a stirring unit for stirring the adsorbent contained in the adsorbent case in the adsorbent case;
comprising
gas circuit breaker. The stirring part is
a blade disposed within the adsorbent case;
a drive unit that moves the blade within the adsorbent case;
having
The gas circuit breaker according to claim 1. The stirring part has a shaft that serves as a rotating shaft of the blade,
The drive unit is a motor that rotates the shaft,
The gas circuit breaker according to claim 2. The stirring unit has a pipe for blowing the pressurized insulating gas into the adsorbent case to stir the adsorbent in the adsorbent case,
The gas circuit breaker according to claim 1. a puffer chamber for pressurizing the insulating gas;
a channel connecting the puffer chamber and the nozzle;
further comprising
The pipe branches off from the channel,
The gas circuit breaker according to claim 4. The stirring unit is a power transmission device that moves the adsorbent case by power output from a drive source.
The gas circuit breaker according to claim 1. wherein the power transmission is configured to transmit movement of the second electrode to the adsorbent case;
The gas circuit breaker according to claim 6. The adsorbent case is
a storage unit that stores the adsorbent and has a bottom surface at least part of which is made of a mesh material;
a receiving portion provided below the accommodating portion;
has
The mesh material is configured such that the dimension between opposing meshes is smaller than the average particle size of the adsorbent.
A gas circuit breaker according to any one of claims 1 to 7. Using the mesh material as a first mesh material,
At least part of the portion other than the bottom surface of the housing portion is made of a second mesh material including a plurality of meshes as the intake port,
The opening area of each mesh of the second mesh material is smaller than the opening area of each mesh of the first mesh material,
The gas circuit breaker according to claim 8. a container filled with insulating gas;
a pair of electrodes disposed within the vessel and switched into contact with or away from each other;
a nozzle for extinguishing the arc discharge by spraying the insulating gas against the arc discharge generated between the pair of electrodes when the pair of electrodes are separated;
An adsorbent device used in a gas circuit breaker comprising
an adsorbent case having an inlet capable of taking in at least one of decomposed gas and moisture generated when the arc discharge is extinguished, and containing an adsorbent that adsorbs at least one of the decomposed gas and moisture;
a stirring unit for stirring the adsorbent contained in the adsorbent case in the adsorbent case;
comprising
Adsorbent device.

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