WO2014167715A1 - ガス絶縁開閉装置 - Google Patents
ガス絶縁開閉装置 Download PDFInfo
- Publication number
- WO2014167715A1 WO2014167715A1 PCT/JP2013/061089 JP2013061089W WO2014167715A1 WO 2014167715 A1 WO2014167715 A1 WO 2014167715A1 JP 2013061089 W JP2013061089 W JP 2013061089W WO 2014167715 A1 WO2014167715 A1 WO 2014167715A1
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- WO
- WIPO (PCT)
- Prior art keywords
- disconnector
- axis
- container
- viewing window
- movable contact
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/002—Very heavy-current switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2223/00—Casings
- H01H2223/002—Casings sealed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/045—Details of casing, e.g. gas tightness
Definitions
- the present invention relates to a gas insulated switchgear.
- the gas insulated switchgear is configured by storing a plurality of devices such as a circuit breaker, a disconnect switch, a ground switch in a metal container and sealing the insulating gas.
- a container for storing the disconnector (hereinafter referred to as “disconnector container”) is provided with a viewing window for confirming the connection status of the movable contact of the disconnector from the outside.
- the disconnecting switch container often contains a grounding switch, and the disconnecting switch container may be provided with another viewing window for confirming the connection status of the movable contact of the grounding switch from the outside. is there.
- the observation window has a circular shape reflecting the above installation purpose, and is arranged at a position where the contact of the disconnecting switch or the grounding switch can be seen well.
- Patent Document 1 describes an internal inspection device for visually inspecting the inside of a gas insulating device from the outside.
- This internal inspection device is attached to a circular opening provided in a container of a gas insulating device.
- the cylindrical main body portion of the internal inspection device is inserted into the opening of the container, is movable in the axial direction of the main body portion, and is rotatably attached.
- the main body of the internal inspection device is provided with a lighting light path for guiding light from the outside of the container to the inside of the container and an inspection light path for guiding light from the inside of the container to the outside of the container.
- Both light paths open in the axial direction of the main body outside the container, open in the side of the main body inside the container, and a mirror for bending light and glass for blocking the inside and outside of the container are provided in the middle of the path. It is done.
- a fisheye lens is attached to the opening inside the container of the inspection optical path to widen the inspection range.
- the inspection range can be widened by rotating the main body.
- the conventional viewing window is circular, the size of the window is small, and the visible range visible from the outside is limited, so it is difficult to check the internal conditions other than the vicinity of the contact, especially the condition of the creeping surface of the insulating spacer. It was difficult to do.
- the insulating spacer is provided at the end of the disconnector container, and insulates and supports a part of the disconnector body or a conductor connected to the disconnector body.
- a discharge occurs at the boundary between the insulating spacer and the metal that is the support thereof, and such a discharge causes a dielectric breakdown.
- a trace remains on the creeping surface inside the disconnector container of the insulating spacer. Therefore, the presence or absence of the discharge can be confirmed by visually observing the creeping surface.
- the disconnector container can withstand high gas pressure. Whether the strength design needs to be reviewed. Further, increasing the number of viewing windows leads to an increase in the manufacturing cost of the disconnector container.
- the present invention has been made in view of the above, and based on a simple configuration in which a viewing window is provided in the disconnector container, at least one insulation in the disconnector container without increasing the number of viewing windows.
- An object of the present invention is to provide a gas-insulated switchgear capable of confirming a creeping state of a spacer and a connection state of movable contacts.
- a gas-insulated switchgear includes a first end portion having a first axis as a central axis and the first end line orthogonal to or identical to the first axis.
- a disconnector container provided with a second end different from the first end having a second axis as a central axis, and housed in the disconnector container, the first end A disconnection connected to the first conductor housed in the first container to be connected and connected to the second conductor housed in the second container connected to the second end.
- a gas-insulated switchgear comprising a disconnector having a viewing window disposed at a position opposite to the contact point between the movable contact and the fixed contact of the disconnector body, and having at least a view window including the contact point in a visible range.
- the viewing window includes a light transmitting member that closes an elliptical opening having a long diameter in the direction of the first axis, and the creeping surface of the first insulating spacer is in a visible range.
- the length of the major axis is set.
- the creeping state of the first insulating spacer in the disconnector container and the movable contact are not increased without increasing the number of inspection windows. There is an effect that the connection status can be confirmed.
- FIG. 1 is a side view showing a configuration of a gas insulated switchgear according to Embodiment 1.
- FIG. FIG. 2 is a longitudinal sectional view showing the configuration of the gas insulated switchgear according to Embodiment 1.
- 3 is a cross-sectional view taken along line AA in FIG. 4 is a cross-sectional view taken along the line BB in FIG.
- FIG. 5 is a side view showing a configuration of a conventional gas insulated switchgear.
- FIG. 6 is a longitudinal sectional view showing a configuration of a conventional gas insulated switchgear.
- 7 is a cross-sectional view taken along the line CC in FIG. 8 is a cross-sectional view taken along the line DD in FIG.
- FIG. 9 is a side view showing a configuration of a gas-insulated switchgear according to a modification of the first embodiment.
- FIG. 10 is a longitudinal sectional view showing a configuration of a gas insulated switchgear according to a modification of the first embodiment.
- FIG. 11 is a side view showing the configuration of the gas-insulated switchgear according to the second embodiment.
- FIG. 12 is a longitudinal sectional view showing the configuration of the gas-insulated switchgear according to the second embodiment.
- 13 is a cross-sectional view taken along line EE in FIG. 14 is a cross-sectional view taken along line FF in FIG. 15 is a cross-sectional view taken along the line GG in FIG.
- FIG. 16 is a side view showing a configuration of another conventional gas insulated switchgear.
- FIG. 17 is a longitudinal sectional view showing a configuration of another conventional gas insulated switchgear.
- 18 is a cross-sectional view taken along the line HH in FIG. 19 is a cross-sectional
- FIG. 1 is a side view showing a configuration of a gas insulated switchgear according to the present embodiment
- FIG. 2 is a longitudinal sectional view showing a configuration of a gas insulated switchgear according to the present embodiment
- FIG. 4 is a BB sectional view in FIG.
- the viewing windows 7 and 8 are shown by dotted lines.
- FIG. 3 since the purpose is to show the visible range of the viewing window 7, a part of the configuration is omitted.
- the end portion 12 b is also indicated by a dotted line, and the purpose is to show the visible range of the viewing window 7, and thus a part of the configuration is omitted.
- the gas-insulated switchgear includes a disconnector 2 in which a disconnector body is housed in a disconnector container 2a, and an end portion 12a (first of the disconnector container 2a).
- a conductor 33 first conductor
- a conductor 34 second conductor that is housed in a container 34a (second container) connected to the disconnection device 2 and connected to the disconnector 2.
- Each of the disconnector container 2a and the containers 33a and 34a is a metal tank, and the inside thereof is hermetically filled with an insulating gas, for example, sulfur hexafluoride gas.
- the conductors 33 and 34 are connected to other gas insulation devices (not shown).
- the disconnector main body includes a movable contact 2c and a fixed contact 2b.
- the gas insulated switchgear according to the present embodiment is applied to both the phase separation type and the three-phase collective type.
- the disconnect switch 2 is a disconnect switch with a so-called ground switch in which the disconnect switch body and the ground switch 6 are integrally formed in the disconnect container 2a.
- the disconnector container 2a is substantially L-shaped, and includes a cylindrical end portion 12a having an axis 50 (first axis) as a central axis, and an axis 51 (second axis) substantially orthogonal to the axis 50. And a cylindrical end portion 12b as a central axis. Further, the disconnector container 2a is longer in the direction of the axis 50 than in the direction of the axis 51, and the end 12b is drawn out in the direction of the axis 50 from the cylindrical portion having the axis 51 connected to the end 12a as the central axis. It is configured in an L shape.
- the disconnector container 2a includes an end 12c provided on the opposite side to the end 12a in the direction of the axis 50, and an end 12d (first) provided on the side opposite to the end 12b in the direction of the axis 51. 3), the opening of the end 12c is closed by the cover plate 5a, and the opening of the end 12d is closed by the cover 5b.
- the end 12a of the disconnector container 2a is connected to one end of the container 33a via the insulating spacer 10 (first insulating spacer). That is, the insulating spacer 10 is disposed in the opening of the end portion 12a.
- the insulating spacer 10 is made of, for example, an epoxy resin.
- the insulating spacer 10 insulates and supports the fixed contact 2b of the disconnector 2 and the fixed portion of the disconnector 2 including the electric field relaxation shield 2d covering the fixed contact 2b, and insulatively supports the conductor 33 connected to the fixed contact 2b. Yes.
- the insulating spacer 10 supports the fixed contact 2b through the electric field relaxation shield 2d. Further, a fixed side electrode connected to the fixed contact 2b also exists inside the electric field relaxation shield 2d, but the illustration is omitted.
- the end 12b of the disconnector container 2a is connected to one end of the container 34a via the insulating spacer 11 (second insulating spacer). That is, the insulating spacer 11 is disposed in the opening of the end 12b.
- the insulating spacer 11 is made of, for example, an epoxy resin.
- the insulating spacer 11 insulates and supports the movable conductor 13b of the disconnector 2 and also supports the conductor 34 connected to the conductor 13b.
- the conductor 13 b is connected to the movable contact 2 c of the disconnector 2 and the movable contact 6 b of the ground switch 6.
- the movable side electrode to which the movable contacts 2c and 6b and the conductor 13b are connected also exists inside the electric field relaxation shield 13a, but the illustration is omitted.
- the movable contact 2c can reciprocate along the axis 50 and is in contact with the fixed contact 2b or away from the fixed contact 2b. Further, the movable contact 6b can reciprocate along the axis 51, and is in contact with the fixed contact 6a of the ground switch 6 or away from the fixed contact 6a.
- the earthing switch 6 is opened when the disconnecting switch 2 is turned on, and the earthing switch 6 is opened when the disconnecting switch 2 is opened.
- the movable part is integrally configured so as to be in the charged state.
- the ground switch 6 includes a movable contact 6b, a fixed contact 6a, and an electric field relaxation shield 6c that covers the fixed contact 6a.
- the fixed contact 6a and the electric field relaxation shield 6c are provided on the lid plate 5b that closes the end 12d.
- the movable contact 6b is supported by the insulating spacer 11 through the conductor 13b integrally with the movable contact 2c.
- a viewing window 7 is provided in the disconnector container 2a.
- the viewing window 7 is provided in a cylindrical portion around the axis 50 including the end 12a in the disconnector container 2a.
- the viewing window 7 has an oval shape (including an elliptical shape) having a long diameter in the direction of the axis 50.
- the observation window 7 is configured by closing an oval opening with a light transmitting member 7a such as plate-like glass.
- the normal line of the light transmitting member 7a faces the direction toward the axis 50 that is the central axis of the cylindrical portion.
- the viewing window 7 is arranged at a position facing the movable contact 2c or a position facing the contact between the movable contact 2c and the fixed contact 2b so that the operation and connection status of the movable contact 2c of the disconnector 2 can be well confirmed. Is done.
- the viewing window 7 includes a contact point between the movable contact 2c and the fixed contact 2b within a visible range.
- the viewing window 7 has a length of the major axis determined so that both the creeping surface of the insulating spacer 10 and the creeping surface of the insulating spacer 11 are in the visible range, and the disconnection is performed.
- the circumferential position of the container 2a is determined. That is, the creeping surface of the insulating spacer 10 can be kept within the visible range by enlarging the long diameter of the viewing window 7 toward the insulating spacer 10. Furthermore, the creeping surface of the insulating spacer 11 can be kept within the visible range by enlarging the long diameter of the viewing window 7 toward the insulating spacer 11 and adjusting the circumferential position of the disconnector container 2a.
- the viewing window 7 is opposite to the end 12 b across the axis 50 when the disconnector container 2 a is viewed in a plan view from a direction perpendicular to the plane including the axes 50 and 51.
- the angle formed by the position in the circumferential direction of the viewing window 7 and the position in the circumferential direction of the end 12b is at least 90 °. Need to be bigger than. In FIG. 3, this angle is set to 135 °, for example.
- This angle is most preferably 180 ° for the purpose of visually confirming the creeping surface of the insulating spacer 11, but since the end portion 12d is provided in the disconnector container 2a, it is better to provide it at a position smaller than 180 °. Creation of the viewing window 7 is facilitated.
- the visible range of the viewing window 7 in a plane perpendicular to the axis 50 is indicated by hatching. From this figure, it can be seen that the creeping surface of the insulating spacer 11 is included in the visible range of the viewing window 7.
- the visible range of the viewing window 7 in the plane including the axis 50 is indicated by hatching. From the figure, it can be seen that the creeping surface of the insulating spacer 10 and the creeping surface of the insulating spacer 11 are included in the visible range of the viewing window 7. In FIG. 4, the visible range is approximately 160 ° in angle.
- the inspection window 7 is intended not only for confirming the operation and connection status of the movable contact 2c of the disconnector 2, but also for confirming the creeping state of the insulating spacer 10 and the creeping state of the insulating spacer 11. Is provided. Note that, by adjusting the length of the long diameter, the observation window 7 can keep the creeping surface of the insulating spacer 10 within the visible range regardless of the position of the disconnector container 2a in the circumferential direction.
- the visible range of the observation window 7 can be further expanded by using the light transmission member 7a as a fisheye lens.
- the disconnector container 2a is provided with a viewing window 8 (grounding switch viewing window) on the end 12d side.
- the observation window 8 has, for example, a circular shape, and is configured by closing an opening with a light transmission member (not shown) such as plate-like glass.
- the viewing window 8 is located at a position facing the movable contact 6b or a position facing the contact between the movable contact 6b and the fixed contact 6a so that the operation and connection status of the movable contact 6b of the ground switch 6 can be well confirmed. Be placed.
- the viewing window 8 includes a contact point between the movable contact 6b and the fixed contact 6a within a visible range.
- the viewing window 8 is viewed through the axis 51 when the disconnector container 2a is viewed from the direction perpendicular to the plane including the axes 50 and 51. By providing it on the side opposite to the side on which the window 7 is provided, creation is facilitated.
- the viewing window 8 may have an elliptical shape with a long diameter in the direction of the axis 51, and the light transmitting member may be a fisheye lens.
- the creeping surface of the insulating spacer 10 can be included in the visible range of the observation window 8, and the reliability of the internal confirmation is further improved.
- FIG. 5 is a side view showing the configuration of a conventional gas-insulated switchgear
- FIG. 6 is a longitudinal sectional view showing the configuration of a conventional gas-insulated switchgear
- FIG. 7 is a CC cross-sectional view in FIG.
- FIG. 9 is a DD cross-sectional view in FIG.
- the observation windows 17 and 18 are also indicated by dotted lines. 7 and 8 are intended to show the visible range of the viewing window 17, and a part of the configuration is omitted.
- sight windows 17 and 18 are provided instead of the sight windows 7 and 8 of the present embodiment. Since other configurations of the conventional gas insulated switchgear are the same as those of the present embodiment, in FIG. 5 to FIG. 8, the same components as those shown in FIG. 1 to FIG. Detailed description is omitted.
- the viewing window 17 is provided in the cylindrical part centering on the axis 50 containing the edge part 12a among the disconnector containers 2a.
- the observation window 17 has a circular shape, and is configured by closing a circular opening with a light transmission member 17a such as plate-like glass.
- the viewing window 17 is arranged at a position facing the movable contact 2c or a position facing the contact between the movable contact 2c and the fixed contact 2b so that the operation and connection status of the movable contact 2c of the disconnector 2 can be well confirmed. Is done.
- the viewing window 17 is provided on the side on which the end portion 12 b is provided with respect to the axis 50 when viewed in a plan view from a direction perpendicular to the plane including the axes 50 and 51.
- the visible range of the viewing window 17 in a plane perpendicular to the axis 50 is indicated by hatching.
- the visible range of the viewing window 17 in the plane including the axis 50 is indicated by hatching.
- the visible range of the viewing window 17 is approximately 60 ° in angle, the visible range is narrower than that of the present embodiment, and the creeping surface of the insulating spacer 10 is outside the visible range.
- the observation window 17 is circular.
- the position of the observation window 17 in the circumferential direction is assumed to be the same as that of the present embodiment.
- the viewing window 17 is circular and the visible range in the direction of the axis 51 is limited, it is difficult to include the creeping surface of the insulating spacer 11 in the visible range.
- the observation window 17 is only for the purpose of confirming the operation and connection status of the movable contact 2c of the disconnector 2, and is circular, has a small window size, and has a limited visible range visible from the outside. In addition, it is difficult to check the internal conditions other than the vicinity of the contacts, and it is difficult to check the creeping state of the insulating spacers 10 and 11.
- the sight glass 18 has a circular shape like the sight glass 8.
- the viewing window 18 is located at a position facing the movable contact 6b or a position facing the contact between the movable contact 6b and the fixed contact 6a so that the operation and connection status of the movable contact 6b of the ground switch 6 can be well confirmed. Be placed. Therefore, it is difficult for the viewing window 18 to include the creeping surfaces of the insulating spacers 10 and 11 in the visible range, similarly to the viewing window 8.
- the viewing window 7 installed for the purpose of confirming the operation and connection status of the movable contact 2c of the disconnector 2 is formed into an oval shape having a long diameter in the direction of the axis 50, and the disconnector container By adjusting the circumferential position of 2a, the creeping surfaces of both insulating spacers 10 and 11 can be kept within the visible range.
- discharge may generally occur at the boundary between the insulating spacer 10 and the metal (electric field relaxation shield 2d) or at the boundary between the insulating spacer 11 and the metal (conductor 13b). Discharge causes breakdown. In addition, when a discharge occurs, a trace remains on the creeping surface inside the disconnector container 2a of the insulating spacers 10 and 11, so that the presence or absence of the discharge can be confirmed by visually observing the creeping surface.
- the creeping surfaces of the insulating spacers 10 and 11 can be visually observed, and the presence or absence of occurrence of discharge can be confirmed.
- the visible range of the viewing window 17 was limited, and it was difficult to confirm the creeping state of the insulating spacers 10 and 11 through the viewing window 17. It was necessary, and it was necessary to secure the work cost for the dismantling work and the power outage time during the dismantling period.
- the dismantling work is unnecessary, and the work cost for the dismantling work and the power failure time during the dismantling period are unnecessary.
- the internal state of the disconnector container 2a can be confirmed over a wide range at all times from the outside, the quality is improved.
- the disconnector container 2a can withstand a high gas pressure. It is necessary to review the strength design of whether to obtain. Further, increasing the number of viewing windows leads to an increase in the manufacturing cost of the disconnector container 2a.
- the disconnect switch 2 is a disconnect switch with a ground switch.
- the ground switch 6 is installed separately from the disconnect switch 2 in the disconnect switch container 2a. It can be applied in the same way. Moreover, the earthing switch 6 does not need to be provided in the disconnector container 2a.
- FIG. 9 is a side view showing a configuration of a gas-insulated switchgear according to a modification of the present embodiment
- FIG. 10 is a longitudinal sectional view showing a configuration of the gas-insulated switchgear according to a modification of the present embodiment.
- the viewing windows 18 and 19 are also indicated by dotted lines.
- observation windows 19 and 18 are provided instead of the inspection windows 7 and 8 of the present embodiment. Since the other configuration of the gas insulated switchgear according to this modification is the same as that of the present embodiment, in FIG. 9 and FIG. 10, the same components as those shown in FIG. 1 and FIG. Detailed description will be omitted.
- the viewing window 19 is provided in the cylindrical part centering on the axis 50 containing the edge part 12a among the disconnector containers 2a.
- the viewing window 19 has an oval shape with a long diameter in the direction of the axis 50, and is configured by closing an oval opening with a light transmitting member (not shown) such as plate-like glass.
- the viewing window 19 is arranged at a position facing the movable contact 2c or a position facing the contact between the movable contact 2c and the fixed contact 2b so that the operation and connection status of the movable contact 2c of the disconnector 2 can be well confirmed. Is done.
- the viewing window 19 includes a contact point between the movable contact 2c and the fixed contact 2b within a visible range.
- the viewing window 19 is provided on the end 12b side with respect to the axis 50 when the disconnector container 2a is viewed in a plan view from a direction perpendicular to the plane including the axes 50 and 51. Therefore, the observation window 19 can keep the creeping surface of the insulating spacer 10 within the visible range by adjusting the length of the major axis. By making the light transmission member of the viewing window 19 a fisheye lens, the visible range can be further expanded.
- the viewing window 18 is the same as that shown in FIGS.
- FIG. FIG. 11 is a side view showing the configuration of the gas-insulated switchgear according to the present embodiment
- FIG. 12 is a longitudinal sectional view showing the configuration of the gas-insulated switchgear according to the present embodiment
- FIG. EE sectional view FIG. 14 is a sectional view taken along line FF in FIG. 12, and
- FIG. 15 is a sectional view taken along line GG in FIG.
- the gas-insulated switchgear includes the disconnector 2 in which the disconnector body is housed in the disconnector container 2a, and the end 12a (the first portion of the disconnector container 2a).
- a conductor 33 first conductor
- a conductor 35 second conductor that is housed in a container 35a (second container) connected to the disconnector 2 and connected to the disconnector 2.
- Each of the disconnector container 2a and the containers 33a and 35a is a metal tank, and an insulating gas such as sulfur hexafluoride gas is hermetically filled therein.
- the conductors 33 and 35 are connected to other gas insulation devices (not shown).
- the gas insulated switchgear according to the present embodiment is applied to both the phase separation type and the three-phase collective type.
- the disconnect switch 2 is a disconnect switch with a so-called ground switch in which the disconnect switch body and the ground switch 6 are integrally formed in the disconnect container 2a.
- the disconnector container 2a has a substantially linear shape along the axis 50, and includes cylindrical end portions 12a and 12c having the axis 50 (first or second axis) as a central axis.
- the disconnector container 2a includes a cylindrical end portion 12b having an axis 51 (third axis) substantially orthogonal to the axis 50 as a central axis, and a side opposite to the end 12b in the direction of the axis 51.
- the end 12d is provided, but the opening of the end 12b is closed by the cover plate 5c, and the opening of the end 12d is closed by the cover plate 5b.
- the end 12a of the disconnector container 2a is connected to one end of the container 33a via the insulating spacer 10 (first insulating spacer). That is, the insulating spacer 10 is disposed in the opening of the end portion 12a.
- the insulating spacer 10 is made of, for example, an epoxy resin.
- the insulating spacer 10 insulates and supports the fixed contact 2b of the disconnector 2 and the fixed portion of the disconnector 2 including the electric field relaxation shield 2d covering the fixed contact 2b, and insulatively supports the conductor 33 connected to the fixed contact 2b. Yes.
- the insulating spacer 10 supports the fixed contact 2b through the electric field relaxation shield 2d. Further, a fixed side electrode connected to the fixed contact 2b also exists inside the electric field relaxation shield 2d, but the illustration is omitted.
- the end 12c of the disconnector container 2a is connected to one end of the container 35a via an insulating spacer 29 (second insulating spacer). That is, the insulating spacer 29 is disposed in the opening of the end 12c.
- the insulating spacer 29 is made of, for example, an epoxy resin.
- the insulating spacer 29 insulates and supports the movable conductor 13c of the disconnector 2 and also supports the conductor 35 connected to the conductor 13c.
- the conductor 13 c is connected to the movable contact 2 c of the disconnector 2 and the movable contact 6 b of the ground switch 6.
- the movable contact 2c can reciprocate along the axis 50 and is in contact with the fixed contact 2b or away from the fixed contact 2b. Further, the movable contact 6b can reciprocate along the axis 51, and is in contact with the fixed contact 6a of the ground switch 6 or away from the fixed contact 6a.
- the earthing switch 6 is opened when the disconnecting switch 2 is turned on, and the earthing switch 6 is opened when the disconnecting switch 2 is opened.
- the movable part is integrally configured so as to be in the charged state.
- the ground switch 6 includes a movable contact 6b, a fixed contact 6a, and an electric field relaxation shield 6c that covers the fixed contact 6a.
- the fixed contact 6a and the electric field relaxation shield 6c are provided on the lid plate 5b that closes the end 12d.
- the movable contact 6b is supported by the insulating spacer 29 through the conductor 13c integrally with the movable contact 2c.
- the disconnector 2 of the present embodiment has the same structure as that of the first embodiment except that the shape thereof is a linear shape.
- a viewing window 27 is provided in the disconnector container 2a.
- the viewing window 27 is provided in a cylindrical portion around the axis 50 including the end portion 12a in the disconnector container 2a.
- the viewing window 27 has an elliptical shape (including an elliptical shape) having a long diameter in the direction of the axis 50.
- the observation window 27 is configured by closing an oval opening with a light transmitting member 27a such as plate-like glass.
- the normal line of the light transmitting member 27a faces the direction toward the axis 50 that is the central axis of the cylindrical portion.
- the viewing window 27 is disposed at a position facing the movable contact 2c or a position facing the contact between the movable contact 2c and the fixed contact 2b so that the operation and connection status of the movable contact 2c of the disconnector 2 can be well confirmed. Is done.
- the viewing window 27 includes a contact point between the movable contact 2c and the fixed contact 2b within a visible range.
- the length of the major axis of the viewing window 27 is determined so that the creeping surface of the insulating spacer 10 is in the visible range. That is, by enlarging the long diameter of the viewing window 27 toward the insulating spacer 10, the creeping surface of the insulating spacer 10 can be kept within the visible range.
- the viewing window 27 is provided on the end 12b side with respect to the axis 50 when the disconnector container 2a is viewed in a plan view from a direction perpendicular to the plane including the axes 50 and 51. Note that the position in the circumferential direction of the viewing window 27 may be another location as long as it is close to the viewing window 28 and it is difficult to create the viewing window.
- the disconnector container 2a is further provided with a viewing window 28 (grounding switch viewing window).
- the viewing window 28 is provided on the end 12d side.
- the viewing window 28 has an elliptical shape (including an elliptical shape) having a long diameter in the direction of the axis 51.
- the observation window 28 is configured by closing an oval opening with a light transmission member 28a such as plate-like glass.
- the normal line of the light transmission member 28a faces the direction toward the axis 51 that is the central axis of the end 12d.
- the viewing window 28 is located at a position facing the movable contact 6b or a position facing the contact between the movable contact 6b and the fixed contact 6a so that the operation and connection status of the movable contact 6b of the ground switch 6 can be well confirmed. Be placed.
- the viewing window 28 includes a contact point between the movable contact 6b and the fixed contact 6a within a visible range.
- the length of the major diameter of the viewing window 28 is determined so that the creeping surface of the insulating spacer 29 is in the visible range. That is, by enlarging the long diameter of the viewing window 28 toward the insulating spacer 29, the creeping surface of the insulating spacer 29 can be kept within the visible range.
- the viewing window 28 is provided on the end 12 a side with respect to the axis 51 when the disconnector container 2 a is viewed in a plan view from a direction perpendicular to the plane including the axes 50 and 51.
- the visible range of the viewing window 27 in a plane perpendicular to the axis 50 is indicated by hatching.
- the visible range of the viewing window 28 in a plane perpendicular to the axis 51 is indicated by hatching. From this figure, it can be seen that the creeping surface of the insulating spacer 29 is included in the visible range of the viewing window 28.
- the visible range of the viewing window 27 in the plane including the axis 50 is indicated by hatching. From the figure, it can be seen that the creeping surface of the insulating spacer 10 and a part of the creeping surface of the insulating spacer 29 are included in the visible range. In FIG. 15, the visible range is approximately 160 ° in angle.
- the observation window 27 is provided not only for confirming the operation and connection state of the movable contact 2c of the disconnector 2, but also for confirming the state of the creeping state of the insulating spacer 10.
- the observation window 28 is provided not only for confirming the operation and connection state of the movable contact 6 b of the ground switch 6 but also for confirming the creeping state of the insulating spacer 29.
- the visible range of the observation windows 27 and 28 can be further expanded by using the light transmission members 27a and 28a as fish-eye lenses.
- FIG. 16 is a side view showing the configuration of another conventional gas-insulated switchgear
- FIG. 17 is a longitudinal sectional view showing the configuration of another conventional gas-insulated switchgear
- FIG. 18 is a cross-sectional view taken along line HH in FIG. 19 and 19 are sectional views taken along the line II in FIG.
- the viewing windows 30 and 31 are also indicated by dotted lines.
- FIGS. 18 and 19 since the purpose is to show the visible range of the viewing window 30, a part of the configuration is omitted.
- observation windows 30 and 31 are provided in place of the observation windows 27 and 28 of the present embodiment. Since other configurations of another conventional gas-insulated switchgear are the same as those of the present embodiment, in FIG. 16 to FIG. 19, the same components as those shown in FIG. 11 to FIG. Detailed description will be omitted.
- the viewing window 30 is provided in the cylindrical part centering on the axis 50 containing the edge part 12a among the disconnector containers 2a.
- the viewing window 30 has a circular shape, and is configured by closing a circular opening with a light transmitting member 30a such as plate-like glass.
- the viewing window 30 is disposed at a position facing the movable contact 2c or a position facing the contact between the movable contact 2c and the fixed contact 2b so that the operation and connection status of the movable contact 2c of the disconnector 2 can be well confirmed. Is done.
- the viewing window 30 is provided on the side on which the end portion 12 b is provided with respect to the axis 50 when viewed in a plan view from a direction perpendicular to the plane including the axes 50 and 51.
- a viewing window 31 is further provided in the disconnector container 2a.
- the viewing window 31 is provided on the end 12d side of the disconnector container 2a.
- the viewing window 31 has a circular shape, and is configured by closing a circular opening with a light transmitting member (not shown) such as plate-like glass.
- the viewing window 31 is located at a position facing the movable contact 6b or a position facing the contact point between the movable contact 6b and the fixed contact 6a so that the operation and connection state of the movable contact 6b of the ground switch 6 can be well confirmed. Be placed.
- the viewing window 31 is provided on the side on which the end portion 12 a is provided with respect to the axis 51 when viewed in a plan view from a direction perpendicular to the plane including the axes 50 and 51.
- the visible range of the viewing window 30 in a plane perpendicular to the axis 50 is indicated by diagonal lines.
- the visible range of the viewing window 30 in the plane including the axis 50 is indicated by hatching.
- the visible range of the viewing window 30 is approximately 60 ° in angle, the visible range is narrower than that of the present embodiment, and both creeping surfaces of the insulating spacers 10 and 29 are outside the visible range. This is because the observation window 30 is circular. Further, the observation window 31 is also circular, and its visible range is narrow, and the creeping surface of the insulating spacer 29 is outside the visible range.
- the viewing window 27 installed for the purpose of confirming the operation and connection status of the movable contact 2c of the disconnector 2 is arranged in the direction of the axis 50.
- the observation window installed for the purpose of confirming the operation and connection status of the movable contact 6b of the earthing switch 6 can be accommodated within the visible range by forming the oblong shape of the long diameter at the top.
- the creeping surface of the insulating spacer 29 can be within the visible range.
- the observation windows 27 and 28 it is possible to visually observe the creeping surfaces of the insulating spacers 10 and 29 and to confirm whether or not a discharge has occurred.
- the disconnect switch 2 is a disconnect switch with a ground switch.
- the ground switch 6 is installed separately from the disconnect switch 2 in the disconnect switch container 2a. It can be applied in the same way. Moreover, the earthing switch 6 does not need to be provided in the disconnector container 2a.
- the disconnecting switch 2 and the grounding switch 6 are each configured such that the movable contact is linearly driven, but may be a blade type and rotationally driven.
- the arrangement of the viewing windows shown in the first and second embodiments is merely an example, and the arrangement can be appropriately changed as long as the insulating spacer is included in the visible range.
- the present invention is useful as a gas insulated switchgear.
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
Description
図1は、本実施の形態に係るガス絶縁開閉装置の構成を示す側面図、図2は、本実施の形態に係るガス絶縁開閉装置の構成を示す縦断面図、図3は、図2におけるA-A断面図、図4は、図3におけるB-B断面図である。なお、図2では、覗き窓7,8を併せて点線で示している。また、図3では、覗き窓7の可視範囲を示すことを目的としているので、構成の一部を省略して示している。また、図4では、端部12bを併せて点線で示し、覗き窓7の可視範囲を示すことを目的としているので、構成の一部を省略して示している。
図11は、本実施の形態に係るガス絶縁開閉装置の構成を示す側面図、図12は、本実施の形態に係るガス絶縁開閉装置の構成を示す縦断面図、図13は、図12におけるE-E断面図、図14は、図12におけるF-F断面図、図15は、図13におけるG-G断面図である。
Claims (7)
- 第1の軸線を中心軸とする第1の端部および前記第1の軸線と直交しまたは同一である第2の軸線を中心軸とする前記第1の端部とは別の第2の端部が設けられた断路器容器と、この断路器容器内に収納され、前記第1の端部に接続される第1の容器内に収納された第1の導体に接続されるとともに、前記第2の端部に接続される第2の容器内に収納された第2の導体に接続される断路器本体と、前記第1の端部に設けられ、前記断路器本体の固定コンタクトおよび前記第1の導体を支持する第1の絶縁スペーサと、前記第2の端部に設けられ、前記断路器本体の可動コンタクトに接続される可動側の導体および前記第2の導体を支持する第2の絶縁スペーサと、前記断路器容器のうち前記第1の端部を含む前記第1の軸線を中心軸とする円筒部分に設けられ、前記断路器本体の可動コンタクトに対向した位置、または前記断路器本体の可動コンタクトと前記断路器本体の固定コンタクトとの接点に対向した位置に配置されて、少なくとも当該接点を可視範囲内に含む覗き窓と、を有する断路器を備えたガス絶縁開閉装置であって、
前記覗き窓は、前記第1の軸線の方向に長径の長円形状の開口部を閉塞する光透過部材を有して成り、前記第1の絶縁スペーサの沿面が可視範囲内となるように長径の長さが設定されたものであることを特徴とするガス絶縁開閉装置。 - 前記第1の軸線は前記第2の軸線と直交し、前記断路器容器は概略L型の形状であり、
前記覗き窓は、前記第1および第2の軸線を含む平面に垂直な方向から前記断路器容器を平面視したときに、前記第1の軸線を挟んで前記第2の端部と反対側に設けられており、前記第2の絶縁スペーサの沿面も可視範囲内となるように、前記長径の長さおよび前記断路器容器における周方向の位置が設定されたものであることを特徴とする請求項1に記載のガス絶縁開閉装置。 - 前記断路器は、前記断路器容器内に接地開閉器を備えており、
前記断路器容器には、前記第2の軸線の方向において前記第2の端部と反対側に第3の端部が設けられており、
前記接地開閉器の固定コンタクトは前記第3の端部を閉塞する蓋板に設けられており、
前記接地開閉器の可動コンタクトは前記可動側の導体に接続されて前記第2の絶縁スペーサにより支持されており、
前記断路器容器には、前記第3の端部側に、前記接地開閉器の可動コンタクトに対向した位置、または前記接地開閉器の可動コンタクトと前記接地開閉器の固定コンタクトとの接点に対向した位置に配置されて、少なくとも当該接点を可視範囲内に含む接地開閉器用覗き窓が設けられていることを特徴とする請求項2に記載のガス絶縁開閉装置。 - 前記接地開閉器用覗き窓は、前記第1および第2の軸線を含む平面に垂直な方向から前記断路器容器を平面視したときに、前記第2の軸線を挟んで前記第1の端部と反対側に設けられていることを特徴とする請求項3に記載のガス絶縁開閉装置。
- 前記光透過部材は魚眼レンズであることを特徴とする請求項2に記載のガス絶縁開閉装置。
- 前記第1の軸線は前記第2の軸線と同一で、前記断路器容器は概略直線形状であり、
前記断路器は、前記断路器容器内に接地開閉器を備えており、
前記断路器容器には、前記第1の軸線と直交する第3の軸線を中心軸とする第3の端部が設けられており、
前記接地開閉器の固定コンタクトは前記第3の端部を閉塞する蓋板に設けられており、
前記接地開閉器の可動コンタクトは前記可動側の導体に接続されて前記第2の絶縁スペーサにより支持されており、
前記断路器容器には、前記第3の端部側で、かつ、前記第1および第3の軸線を含む平面に垂直な方向から前記断路器容器を平面視したときに前記第3の軸線に対して前記第1の端部側に配置されるとともに、前記接地開閉器の可動コンタクトに対向した位置、または前記接地開閉器の可動コンタクトと前記接地開閉器の固定コンタクトとの接点に対向した位置に配置されて、少なくとも当該接点を可視範囲内に含む接地開閉器用覗き窓が設けられており、
前記接地開閉器用覗き窓は、前記第3の軸線の方向に長径の長円形状の開口部を閉塞する光透過部材を有して成り、前記第2の絶縁スペーサの沿面が可視範囲内となるように長径の長さが設定されたものであることを特徴とする請求項1に記載のガス絶縁開閉装置。 - 前記覗き窓の光透過部材および前記接地開閉器用覗き窓の光透過部材はいずれも魚眼レンズであることを特徴とする請求項6に記載のガス絶縁開閉装置。
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PCT/JP2013/061089 WO2014167715A1 (ja) | 2013-04-12 | 2013-04-12 | ガス絶縁開閉装置 |
US14/652,588 US20160086744A1 (en) | 2013-04-12 | 2013-04-12 | Gas-insulated switchgear |
JP2013534094A JP5425347B1 (ja) | 2013-04-12 | 2013-04-12 | ガス絶縁開閉装置 |
CN201380074215.1A CN105009391A (zh) | 2013-04-12 | 2013-04-12 | 气体绝缘开关装置 |
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JPS59169516U (ja) * | 1983-04-28 | 1984-11-13 | 株式会社東芝 | ガス絶縁開閉装置用内部点検器 |
JPS61203808A (ja) * | 1985-03-06 | 1986-09-09 | 株式会社東芝 | ガス絶縁開閉装置 |
JPH11122726A (ja) * | 1997-10-07 | 1999-04-30 | Nissin Electric Co Ltd | 密閉電気機器の内部点検装置 |
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EP0678952B1 (de) * | 1994-04-19 | 1998-08-26 | Asea Brown Boveri Ag | Trenner für eine metallgekapselte gasisolierte Hochspannungsschaltanlage |
DE19519301A1 (de) * | 1995-05-26 | 1996-11-28 | Abb Management Ag | Trenner für eine metallgekapselte gasisolierte Hochspannungsschaltanlage |
FR2805406B1 (fr) * | 2000-02-23 | 2002-08-23 | Alstom | Commutateur electrique a trois positions avec un element de commutation mobile axialement |
DE102009030610A1 (de) * | 2009-06-23 | 2010-12-30 | Siemens Aktiengesellschaft | Hochspannungsanordnung |
JP5471925B2 (ja) * | 2010-07-16 | 2014-04-16 | 株式会社日立製作所 | 接地開閉器付断路器 |
-
2013
- 2013-04-12 WO PCT/JP2013/061089 patent/WO2014167715A1/ja active Application Filing
- 2013-04-12 JP JP2013534094A patent/JP5425347B1/ja active Active
- 2013-04-12 CN CN201380074215.1A patent/CN105009391A/zh active Pending
- 2013-04-12 US US14/652,588 patent/US20160086744A1/en not_active Abandoned
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59169516U (ja) * | 1983-04-28 | 1984-11-13 | 株式会社東芝 | ガス絶縁開閉装置用内部点検器 |
JPS61203808A (ja) * | 1985-03-06 | 1986-09-09 | 株式会社東芝 | ガス絶縁開閉装置 |
JPH11122726A (ja) * | 1997-10-07 | 1999-04-30 | Nissin Electric Co Ltd | 密閉電気機器の内部点検装置 |
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CN105009391A (zh) | 2015-10-28 |
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JPWO2014167715A1 (ja) | 2017-02-16 |
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