JP2008301690A - Gas-insulated switching apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-insulated switching apparatus capable of providing at low device cost and shortening the shipment preparation process and the installation process at a site by realizing an integrated transportation of the device and a control board, which is achieved by devising an arrangement relation and a mutual connection structure among the main body device portion of a gas-insulated switching apparatus, control board and control cable at factory shipment. <P>SOLUTION: In the main body device portion 1 of a gas-insulated switching apparatus, the control board 2 is directly fixed, as a figure for transportation, to a circuit breaker 10 which is one of the major devices of the main body device portion 1. The control board 2 is fixed with fixing reception seats 19, 25 formed on the body of the breaker 10 and fixing seats 18, 26 formed on the control board side. The fixing reception seats 19, 25 and fixing seats 18, 26 are formed at upper and lower end portions of the breaker 10, respectively, so as to fit to the vertically long shape of the breaker 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a gas insulated switchgear in which an insulating gas such as SF ₆ gas is sealed as an insulating medium in a sealed metal container.

  Currently, domestic electric power companies are gradually reducing their electricity charges in order to respond to the entry of new businesses due to various deregulations. Reduction of capital investment cost is essential for lowering electricity charges, and gas insulated switchgear in the power distribution sector is no exception.

  However, in order to maintain a stable power distribution mechanism, capital investment for the purpose of aging renewal and capital investment when configuring a new power transmission system is essential. Therefore, in order to reduce these capital investments, it is necessary to reduce not only the equipment quantity but also the equipment unit price. Therefore, a switchgear that can be supplied at a lower cost is required from the market.

  The breakdown of the cost of the switchgear applied to the power distribution mechanism is roughly divided into a manufacturing cost that is incurred up to the factory shipment stage of each manufacturer and a construction cost required for on-site construction and testing. For this reason, in order to enable a lower cost, it is necessary to reduce both the manufacturing cost and the construction cost.

  In general, reduction and simplification of equipment are effective in reducing manufacturing costs, and shortening of construction processes is effective in reducing construction costs. For electrical installation work such as gas insulated switchgear, equipment installation and wiring connection tests occupy the main work, and how to reduce those work is important for shortening the process.

  In a gas insulated switchgear for quasi-critical systems and power distribution systems of 168 kV class or less used in Japan, a technology that enables the main body and control panel to be transported and installed in a batch has already been established. In other words, the unit dimensions including the main equipment unit, control cables and control panel are within the transport limit of trailers and trucks. This is the main point that the gas insulated switchgear is 240 / 300kV or higher. It is realized even with the same equipment configuration as the gas insulated switchgear for the system.

  As a result, on-site construction of equipment that can be transported in bulk eliminates the need for control cable wiring connections and confirmation tests, and the construction process is less than half of the conventional construction. In this way, it is indispensable to drastically reduce the local construction cost to transport the control panel and equipment in a lump and delete the local wiring work.

  FIG. 25 is a single-line diagram showing a device configuration of a double bus configuration generally applied in a domestic backbone system of 240/300 kV or more and a quasi-core system of 168 kV or less. In the figure, the circuit configuration in which two main buses are connected to an external line via a circuit breaker via a circuit breaker is common to each domestic power company.

  Up to now, in the gas-insulated switchgear for the backbone system of 240 / 300kV or more, the main dimensions of each device are large, and the increase in the number of devices due to the double bus configuration also affects the transportation of the main unit and the control panel as an integrated configuration. It was impossible to install.

  For this reason, at the time of shipment from the factory, the main unit, control panel, control cable, etc. were divided into multiple units in order to keep them in transportable dimensions, and it was necessary to reassemble them locally. There was a problem that costs increased.

  In contrast, gas insulated switchgears for quasi-core systems and distribution systems of the 168 kV class and below have achieved significant reductions due to the combination and downsizing of individual equipment, and the same conditions as the equipment layout in FIG. Even so, there has already been proposed a device capable of transporting and installing the main body device unit, the control cable, and the control panel in a lump while maintaining necessary maintenance and inspection workability and accident response.

  In addition, due to recent advances in equipment specification rationalization and equipment downsizing technology, the development of equipment capable of transporting main equipment, control panels and control cables to the site in a 240/300 kV-class gas-insulated switchgear is also possible. Has been started.

For example, in Patent Document 1, a gas insulated switchgear cubicle, a gas insulated transformer, a high voltage panel, and a capacitor bank are installed on one base. Moreover, the cooler of the gas-insulated transformer is disposed above the transformer body. In this way, it is a single compact package, which enables the collective transportation by trailer, thereby reducing the transportation and field work costs and time of equipment constituting the substation equipment.
JP 2000-184527 A

  However, in the conventional gas insulated switchgear, it is necessary to arrange disconnectors etc. on both sides of the circuit breaker of the most important equipment in order to keep it within the transport limit dimensions, and the problem that sufficient maintenance and inspection space can not be secured, There were problems such as lengthening the time required for recovery in the event of an accident.

  Considering the maintenance and inspection of the normal circuit breaker and the disassembly and assembly workability at the time of the accident, the equipment configuration is that the circuit breaker is arranged at the end of the main equipment of the gas-insulated switchgear, and the side of the circuit breaker is sufficient. It is necessary to secure a working space.

  FIG. 26 shows a side view of the gas insulated switchgear having a double busbar configuration in consideration of securing the above-described circuit breaker work space and a low floor trailer 43 transporting the gas insulated switchgear at the same scale.

The gas-insulated switchgear of this configuration has a main body unit 1 composed of a main bus, a disconnector, a circuit breaker, an instrument transformer, an instrument current transformer, and the like assembled on the lower frame, an on-site operation function, and the like. It is comprised from the control panel 2 and the control cable 3 which connects these. The control panel 2 is installed at a position where a distance L3 is secured for the purpose of securing a space necessary for maintenance, inspection and assembly work on the side surface of the circuit breaker 10 disposed at the end of the main body device section 1 of the gas insulated switchgear. It has been. In FIG. 26, 10 is a circuit breaker, 10 ₁ is a circuit breaker operation mechanism box containing a hydraulic operation mechanism, a spring, etc., 11 is a current transformer for an instrument, 12 is a line disconnector, and 13 is a ground switch. , 14 is a main bus disconnector, 15 is an instrument transformer, 16 is a main bus, and 17 is a frame for main equipment.

  In the case of such equipment arrangement, the main equipment section 1 can be transported and installed in a lump because it fits within the overall length L5 of the loading platform 36 of the low-floor trailer 43, but the work space of the circuit breaker 10 is secured. The total length L4, which is the sum of the separation distance L3 and the control panel length L2, greatly exceeds the total length L5 of the trailer bed 36, so that it is impossible to perform collective transportation and installation with this arrangement.

  For this reason, at the time of shipment from the factory, the main unit 1 and the control panel 2 of the gas insulated switchgear are separated and transported as shown in FIG. It was necessary to connect the cable 3 for use. As a result, the local construction process was more than twice as long, and the construction cost was significantly increased.

  In addition, when the control cable 3 is connected between the main unit 1 of the gas-insulated switchgear and the control panel 2 before shipment from the factory and the operation check and the wiring continuity check are performed, the control cable 3 Additional work such as removal and shipping packaging and additional costs are also incurred.

  As described above, when the control panel 2 is shipped separately from the main equipment unit 1 of the gas-insulated switchgear, the cost increases in both the factory manufacturing cost and the local construction cost. Compared with the case where the device unit 1 and the control panel 2 are collectively transported, there is a problem that the device cost, the local construction process, and the product shipment preparation process are disadvantageous.

  The present invention has been made in order to solve the above-described problems of the prior art, and its purpose is to provide a main equipment unit, a control panel and a control cable for a gas-insulated gas-insulated switchgear at the time of factory shipment. By devising the arrangement relationship and the connection structure between them, the gas that can realize the collective transportation between the main unit and the control panel, and reduce the equipment cost, the local construction process, and the product shipment preparation process An object of the present invention is to provide an insulated switchgear.

  In order to achieve the above object, a gas insulated switchgear according to the present invention includes a circuit breaker, a disconnector, a main bus, an instrument current transformer, or an instrument transformer in a sealed container filled with an insulating gas as an insulating medium. In a gas-insulated switchgear comprising a device unit, and a control panel connected to the main device unit by a control cable and controlling each device included in the main device unit, and mounted on a carrier of a low floor trailer and transported The control panel is configured to be able to be fixed in a state where the control cable is connected to the main device unit during transportation, and the total length of the main device unit and the control panel at the time of fixing is low floor. It is characterized by being configured to be within the total transport limit of the trailer carrier.

  According to the present invention as described above, it is possible to fix the control panel after the factory shipment test to the dedicated fixing seat on the main unit side of the gas insulated switchgear with the control cable connected. . Furthermore, the overall dimensions of the equipment are also within the transport allowable dimensions of the low floor trailer, and the main body equipment and the control panel can be transported together. As a result, it is possible to reduce the cost of the work of disconnecting the control cable generated at the time of shipment from the factory and the cost of reconnecting the control cable in the field work, thereby reducing the equipment cost and shortening the work process at both the factory and the site. can do.

  According to the present invention, the arrangement of the main unit of the gas insulated gas insulated switchgear at the time of shipment from the factory, the control panel and the control cable, and the connection structure between them are devised, and the control cable is connected to the control panel. It can be moved as it is, and the distance for maintenance and inspection is reduced during transportation, and a regular distance is secured when installed on-site. As a result, the total length of the transported equipment can be shortened within the transport limit limit of the low-floor trailer loading platform, making it possible to realize a collective transportation between the main equipment section and the control panel. In addition, it is possible to provide a gas insulated switchgear that realizes shortening of the product shipment preparation process.

  Hereinafter, typical embodiments according to the present invention will be specifically described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same part through each figure, and the overlapping description is abbreviate | omitted suitably.

(1) 1st Embodiment The gas insulated switchgear in the 1st Embodiment of this invention is demonstrated with reference to drawings. FIG. 1 is a side view (a) and (b) comparing equipment dimensions of the gas-insulated switchgear according to the first embodiment and the installation state of the field, and FIG. FIG. 3 is an enlarged view of a peripheral portion “A” of the control panel 2 of FIG.

  In the main unit 1 of the gas insulated switchgear shown in FIG. 1, the control panel 2 is connected via the control cable 3 as shown in FIG. In the embodiment, as shown in FIG. 5B, the control panel 2 is directly fixed to the circuit breaker 10 which is one of the main devices in the main body device unit 1 as a transport form.

  A specific fixing method will be described with reference to FIG. 2. The control panel 2 includes a fixing seats 19 and 25 provided on the main body of the circuit breaker 10, and a fixing seat provided on the control panel 2 side. 18 and 26 are fixed in combination. The fixing seats 19 and 25 and the fixing seats 18 and 26 are provided on the upper and lower ends of the circuit breaker 10 in accordance with the shape of the vertically long circuit breaker 10. In this embodiment, the fixing seat 18 and the fixing receiving seat 19 are provided on the lower side, and the fixing seat 26 and the fixing receiving seat 25 are provided on the upper side, but this embodiment shows an optimal example. A mode in which the upper and lower sides are provided is also possible.

  The fixing seat 19 provided on the circuit breaker 10 side includes contact surfaces in the horizontal direction and the vertical direction in order to hold the weight of the control panel 2 and the control cable 3 connected to the control panel 2. On the other hand, the fixing seat 18 provided on the control panel 2 side is also provided with horizontal and vertical contact surfaces manufactured under the mating conditions so as to coincide with the contact surfaces described above. The restraint position of the control panel 2 is easily determined by the contact surface structure between the two planes, and is securely joined by the fixing bolt 20.

  Further, the fixing seat 25 and the fixing seat 26 are provided mainly for the role of preventing the control panel 2 from dropping off or falling over during movement. The fixing seat 19 and the fixing seat 26 In the same manner as in the case of joining to 18, the parts are restrained by components such as fixing bolts and connecting pins. With the arrangement of the fixing seats as described above, the control panel 2 can be reliably fixed to the circuit breaker 10.

  Thereby, in the field installation state, the required length L4 (see FIG. 26) to the control panel can be shortened to L6 within the transport allowable dimension L5 of the low floor trailer 43. Thereby, the integrated transportation including the control panel as in the transportation state of the gas insulated switchgear shown in FIG. In the figure, H1 is the height of the control panel 2 during transportation, H2 is the height of the circuit breaker 10, H3 is the height of the control panel 2, and H4 is the transport restriction height.

  Next, referring to FIG. 3 and FIG. 4, a method for moving and fixing the control panel 2 in the direction of the main device unit 1 in the present embodiment will be described.

  In FIG. 3, the control panel 2 is temporarily placed at a distance L3 away from the circuit breaker 10 at the time of assembly at the factory so as to ensure the same inspection and maintenance space as in the field installation state. Under this condition, the control cable 3 is connected between the main body device unit 1 and the control panel 2 of the gas insulated switchgear, and various confirmation tests such as mutual operation and contact are performed. Thereafter, the control panel 2 is lifted by hooking a hanging ear 38 attached to the upper part to a hook of a heavy machine (not shown) with a wire 37 and moved to the vicinity of the circuit breaker 10.

  FIG. 4 shows a state in which the control panel 2 is fixed to the circuit breaker 10 and a state at the time of field installation. The control panel 2 is moved by a distance L7 by a heavy machine and is securely fixed to the circuit breaker 10 by the structure of the fixing seat and the fixing receiving seat described in FIG.

  During the site construction, the control panel 2 is moved to the proper installation position. The moving means is carried out by a lifting work by heavy equipment with the wire 37 as in the factory. After moving the control panel 2 to the normal position, the fixing seats 18 and 26 on the control panel 2 side, which are required for on-site maintenance and inspection space, are removed as necessary. When moving, it is necessary to consider that an excessive load does not act on the connection portion of the control cable 3.

  In the gas-insulated switchgear according to the present embodiment as described above, the control panel can be moved with the control cable connected, the maintenance and inspection separation distance is reduced during transportation, and the regular separation distance is secured during field installation. can do. As a result, the total length of the transported equipment can be shortened to within the transport limit limit of the low-floor trailer platform, and the equipment and control panel can be transported together, reducing equipment costs, local construction processes and products. It is possible to shorten the shipping preparation process.

(2) Second Embodiment A gas-insulated switchgear according to a second embodiment of the present invention will be described with reference to FIGS. The gas-insulated switchgear according to the present embodiment is obtained by improving the method of holding and fixing the control panel 2 to the main device unit 1 in the configuration of the first embodiment. In the first embodiment, the circuit breaker 10 is provided. However, in this embodiment, as shown in FIG. 5, a control panel fixing frame 42 is provided on the side portion of the circuit breaker 10, and is held and fixed here.

  The control panel fixing frame 42 has a columnar shape, is provided on the side of the circuit breaker 10 on the main device unit frame 17 on which the main device unit 1 is mounted, and has a mounting surface toward the control panel 2 side. This mounting surface is provided at a position that forms substantially the same plane as the surface of the circuit breaker 10 facing the control panel 2 side.

  As in the first embodiment, the control panel 2 is provided with fixing seats 18 and 26 above and below the circuit breaker side of the control panel 2. On the other hand, fixing seats 19 and 25 are provided on the mounting surface of the control panel fixing frame 42 at positions corresponding to the fixing seats 18 and 26.

  The specific configuration of the fixing seat and the fixing seat is the same as that of the first embodiment, and the fixing seat 18 and the fixing seat 19 are connected to the control panel 2 and the control panel 2. In order to maintain the weight of the cable 3 for use, a contact surface is provided in the horizontal direction and the vertical direction. Further, the fixing seat 25 and the fixing seat 26 are provided mainly for the role of preventing the control panel 2 from dropping or falling over during movement.

  With such a configuration, the fixing seats 18 and 26 are reliably joined to the fixing receiving seats 19 and 25 by the fixing bolt 20. Further, like the fixing seats 18 and 26, the fixing seats 19 and 25 are restrained from each other by components such as fixing bolts and connecting pins, and mainly prevent the control panel 2 from falling off or falling over during movement. Can do. With the fixing seat arrangement as described above, the control panel 2 can be reliably fixed to the circuit breaker 10.

  As a result, as shown in the first embodiment, the required length L4 to the control panel can be reduced to L6 within the transport allowable dimension L5 of the low floor trailer 43 in the field installation state. Thereby, the integrated transportation including the control panel as in the transportation state of the gas insulated switchgear shown in FIG.

  Next, referring to FIGS. 5 and 6, a method for moving and fixing the control panel 2 in one direction of the main body unit in the present embodiment will be described.

  In FIG. 5, as in the first embodiment, the control panel 2 is temporarily placed at a distance L3 away from the circuit breaker 10 at the time of assembly of the factory so that the same space for inspection and maintenance can be secured. .

  Under this condition, the control cable 3 is connected between the main device 1 and the control panel 2, and various confirmation tests such as operation and contact between them are performed. Thereafter, the control panel 2 is lifted by the wire 37 with the hanging ear 38 attached to the upper part, and is moved to the control panel fixing frame 42 for supporting the control panel 2 installed in the vicinity of the circuit breaker 10.

  The control panel 2 is connected to the control panel fixing frame 42 by the fixing seats 18 and 26 and the fixing bolts 20 as in the first embodiment. The control panel fixing frame 42 is also provided with a horizontal coupling surface for receiving the weight of the control panel 2 and the control cable 3.

  FIG. 6 shows a state in which the control panel 2 is fixed to the control panel fixing frame 42 and a state at the time of field installation. As in the first embodiment, the control panel 2 is moved to the proper installation position. The moving means is carried out by a lifting work by heavy equipment with the wire 37 as in the factory. When moving, it is necessary to consider that an excessive load does not act on the connection portion of the control cable 3. After moving the control panel 2 to the normal position, the fixing seats 18 and 26 on the control panel 2 side, which are required for on-site maintenance and inspection space, are removed as necessary.

  According to the present embodiment configured as described above, unlike the conventional gas insulated switchgear of FIG. 26, it is not necessary to divide and transport the main equipment unit 1 and the control panel 2 of the gas insulated switchgear. The main dimensions of the main body equipment portion 1 of the gas insulated switchgear including the panel 2 and the control cable 3 are within the transport allowable dimensions of the low floor trailer 43 and can be transported in a lump.

  As a result, the cost for disconnecting the control cable generated at the time of shipment from the factory and the cost for reconnecting the control cable in the field work can be reduced, thereby reducing the equipment cost and shortening both the factory and the site work processes. .

(3) Third Embodiment A gas insulated switchgear according to a third embodiment of the present invention will be described with reference to FIGS. In the gas insulated switchgear according to the present embodiment, in the configuration of the first embodiment, as shown in FIG. 7, a fixed point 39 provided on the main equipment frame 17 along a path substantially parallel to the control cable 3. And a fixing point 40 provided on the frame 107 under the control panel 2 and a wire 41 connecting the two points is attached. The total length of the wire 41 is selected so that the extra length is smaller than that of the control cable 3.

  According to the present embodiment having such a configuration, the fixing point 39 provided on the main equipment frame 17 on which the main device 1 is mounted and the fixing point 40 provided on the frame 107 below the control panel 2, By attaching the wire 41, a tensile load acts on the wire 41 having the smallest extra length first when the distance more than the tolerance is accidentally moved during the lifting operation.

  Therefore, for example, by adding a function that generates a warning when a tensile load on the wire 41 is detected, it is possible to recognize the worker, and the movement of the connecting portion of the control cable 3 is excessive. It is possible to prevent a heavy load from acting.

  Next, a method of moving the control panel 2 in one direction of the main body unit in the present embodiment will be described with reference to FIGS. Note that the fixing method is the same as that in the first embodiment, and is therefore omitted. In FIG. 7, as in the first embodiment, the control panel 2 is temporarily placed at a distance L3 away from the circuit breaker 10 at the time of assembling at the factory so that the same space for inspection and maintenance can be secured.

  Under this condition, the control cable 3 is connected between the main unit 1 of the gas insulated switchgear and the control panel 2, and various confirmation tests such as operation and contact between them are performed. The control cable is attached with a wire 41 that connects between a fixed point 39 provided on the main equipment frame 17 and a fixed point 40 provided on the frame 107 at the bottom of the control panel 2 in a substantially parallel path. The total length of the wire 41 is selected so that the extra length is smaller than that of the control cable 3.

  Next, as in the first embodiment, the control panel 2 is moved up to the vicinity of the circuit breaker 10 by lifting the suspension ear 38 attached to the upper portion by the wire 37. At this time, if the distance more than allowable is accidentally moved during the lifting operation, the tensile load is applied to the wire 41 having the shortest extra length first. Therefore, for example, by adding a function that generates a warning when a tensile load on the wire 41 is detected, it is possible to recognize the operator, and the movement of the connection portion of the control cable 3 is excessive. It is possible to prevent a heavy load from acting.

  FIG. 8 shows a state in which the control panel 2 is fixed to the circuit breaker 10 and a state at the time of field installation. The control panel 2 is securely fixed to the circuit breaker 10 (main device part 1) by a fixing seat structure similar to that described in the first embodiment.

(4) Fourth Embodiment A gas-insulated switchgear according to a fourth embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 9, the gas insulated switchgear according to the present embodiment is fixed to the control cable 3 on the frame for the gas insulated switchgear main body along a path substantially parallel to the control cable 3 as shown in FIG. A point 39 and a fixed point 40 provided at the lower part of the control panel 2 are provided, and a wire 41 connecting the two points is attached. The total length of the wire 41 is selected so that the extra length is smaller than that of the control cable 3.

  According to the present embodiment having such a configuration, the fixing point 39 provided on the main equipment frame 17 on which the main device 1 is mounted and the fixing point 40 provided on the frame 107 below the control panel 2, By attaching the wire 41, a tensile load acts on the wire 41 having the smallest extra length first when the distance more than the tolerance is accidentally moved during the lifting operation.

  Therefore, for example, by adding a function that generates a warning when a tensile load on the wire 41 is detected, it is possible to recognize the worker, and the movement of the connecting portion of the control cable 3 is excessive. It is possible to prevent a heavy load from acting.

  Next, a method of moving the control panel 2 in one direction of the main body unit in this embodiment will be described with reference to FIGS. 9 and 10. Note that the fixing method is the same as in the second embodiment, and is therefore omitted. In FIG. 9, as in the second embodiment, the control panel 2 is temporarily placed at a distance L3 away from the circuit breaker 10 at the time of assembly of the factory so as to ensure the same inspection and maintenance space as in the field installation state.

  Under this condition, the control cable 3 is connected between the main unit 1 of the gas insulated switchgear and the control panel 2, and various confirmation tests such as operation and contact between them are performed. The control cable is provided with a wire 41 for connecting between a fixed point 39 provided in the frame portion for the gas insulated switchgear main body and a fixed point 40 provided in the lower part of the control panel 2 in a substantially parallel path, The total length of the wire 41 is selected so that the extra length is smaller than that of the control cable 3.

  Next, as in the second embodiment, the control panel 2 is lifted by the wire 37 to the suspension ear 38 attached to the upper portion and moved to the vicinity of the circuit breaker 10. At this time, if the distance more than allowable is accidentally moved during the lifting operation, the tensile load is applied to the wire 41 having the shortest extra length first. Therefore, for example, by adding a function that generates a warning when a tensile load on the wire 41 is detected, it is possible to recognize the operator, and the movement of the connection portion of the control cable 3 is excessive. It is possible to prevent a heavy load from acting.

  FIG. 10 shows a state in which the control panel 2 is fixed to the circuit breaker 10 and a state at the time of field installation. The control panel 2 is securely fixed to the circuit breaker 10 (main device part 1) by a fixing seat structure similar to that described in the second embodiment.

(5) Fifth Embodiment A gas insulated switchgear according to a fifth embodiment of the present invention will be described with reference to FIGS. The gas-insulated switchgear according to the present embodiment is improved in the moving structure of the control panel 2 at the time of holding and fixing, while the structure of the first embodiment and the mechanism for holding and fixing the control panel 2 to the circuit breaker 10 are the same. It is added.

  That is, as shown in FIG. 11, the gas-insulated switchgear according to the present embodiment has a four-bar link between a main equipment frame 17 on which the main device unit 1 is mounted and a control panel lower frame 107 on which the control panel 2 is mounted. This four-joint link mechanism is provided with two swing links 21 and 22 arranged in parallel.

  Of the two oscillating links, one oscillating link 22 has one end pivotally attached to the upper part of the main equipment frame 17 as a joint 241 and the other end pinned to the upper part of the control panel lower frame 107. The joint 231 is pivotally attached. The other swing link 21 has one end pivotally connected to the lower part of the main equipment frame 17 with a pin 242 and the other end pivotally connected to the lower part of the control panel lower frame 107 with a pin 232. It is said. As a result, the control panel 2 uses a fixed link between the joints 242 and 241 of the main equipment frame 17 and swings within a range of angle θ1 by swing links 21 and 22 pivotally attached to both ends of the fixed link. It is possible. Needless to say, the lengths of the swing links 21 and 22 are set so that the distance between the main body of the breaker 10 and the control panel 2 is the dimension L3.

  The gas-insulated switchgear according to this embodiment includes a control panel 2 and a control cable 3 connected to the control panel by two swing links 21 and 22 and the fixing seats 19 and 25 described in the first embodiment. Holding weight.

At the time of on-site construction, the control panel 2 is fixed to the side surface of the circuit breaker 10 as shown in FIG. 12, and is lifted by a heavy machine (not shown) and supported by the heavy machine, as in Embodiment 1-4 described above. In this state, the fixing bolts 20 (shown in FIG. 4) of the fixing receiving seat 25 and the fixing seat 26 are removed, and then the heavy machinery hook is aligned with the trajectory of the swing links 21 and 22 on the right side of the figure. When the control panel 2 is lowered while being moved, the control panel 2 swings by an angle θ1 to the right side of the figure while maintaining the standing state by the four-bar linkage mechanism, and stops in a state where it is placed on the foundation (FIG. 12). The horizontal movement distance L7 of the control panel 2 is a numerical value of the following formula 1 depending on the rotation radius R1 and the rotation angle θ1 of the swing links 21 and 22.
[Equation 1]
L7 = R1 cos θ1 (1)

  Since the link length is always constant, the control cable laid at the time of factory assembly needs to secure a surplus length in consideration of the rotation angle θ1 and the rotation radius R1 of the swing links 21 and 22.

  According to the present embodiment configured as described above, unlike the conventional gas insulated switchgear of FIG. 26, it is not necessary to divide and transport the main equipment unit 1 and the control panel 2 of the gas insulated switchgear. The main dimensions of the main body equipment portion 1 of the gas insulated switchgear including the panel 2 and the control cable 3 are within the transport allowable dimensions of the low floor trailer 43 and can be transported in a lump.

  As a result, the cost for disconnecting the control cable generated at the time of shipment from the factory and the cost for reconnecting the control cable in the field work can be reduced, thereby reducing the equipment cost and shortening both the factory and the site work processes. .

  In the above description, the control panel 2 is suspended by a heavy machine. However, if a drive mechanism that provides the rotational motion of the swing links 21 and 22 is provided on the main equipment frame 17, the control mechanism is controlled by this drive mechanism. The panel 2 can be moved and installed not only when it can not be lifted by heavy machinery, such as when it is delivered to an indoor electric power station. It is also possible to prevent the load from acting.

(6) Sixth Embodiment A gas-insulated switchgear according to a sixth embodiment of the present invention will be described with reference to FIGS. The gas-insulated switchgear according to this embodiment is an improvement of the fifth embodiment, and the fixing seat 26 shown in the first embodiment as one of the mechanisms for holding and fixing the control panel 2 to the circuit breaker 10. In addition, while adopting the fixing seat 25, other fixing means and the moving structure of the control panel 2 at the time of holding and fixing are improved.

  That is, in this embodiment, the control panel 2 can be moved between the transport position and the installation position by a four-bar linkage mechanism having two swing links as in the fifth embodiment. The fifth embodiment is different from the fifth embodiment in that the joints 241 and 242 of the swing link 21 and the joints 231 and 232 of the swing link 22 are respectively connected from the main device frame 17 and the control panel lower frame 107 to the main body of the circuit breaker 10. The control panel 2 is replaced with the side. Since other configurations are the same as those of the fifth embodiment, description thereof is omitted.

  FIG. 14 shows a state in which the control panel 2 is fixed to the circuit breaker 10 and a state at the time of field installation. The control panel 2 is securely fixed to the circuit breaker 10 (main device part 1) by a fixing seat.

  During the site construction, the control panel 2 is moved to the proper installation position. When the control panel 2 is moved, the fixing receiving seat 25 of the circuit breaker 10 and the fixing bolt 20 of the fixing seat 26 are removed, and then the swinging links 21 and 22 are rotated in the clockwise direction to form a four joint link configuration. Since the shape is a parallelogram arrangement, the control panel 2 can always move in an upright state.

  The horizontal movement distance L7 of the control panel 2 is obtained from the rotation radius R1 and the rotation angle θ1 of the swing links 21 and 22, and is a numerical value of Expression (1) in the fifth embodiment.

  According to the present embodiment configured as described above, unlike the conventional gas insulated switchgear of FIG. 26, it is not necessary to divide and transport the main equipment unit 1 and the control panel 2 of the gas insulated switchgear. The main dimensions of the main body equipment portion 1 of the gas insulated switchgear including the panel 2 and the control cable 3 are within the transport allowable dimensions of the low floor trailer 43 and can be transported in a lump.

  As a result, the cost for disconnecting the control cable generated at the time of shipment from the factory and the cost for reconnecting the control cable in the field work can be reduced, thereby reducing the equipment cost and shortening both the factory and the site work processes. .

  In addition, the control panel 2 can be moved only by giving a rotational motion to the swing links 21 and 22, and it can be installed even when it cannot be lifted by heavy machinery work, such as when delivered to an indoor electric station. In addition, it is possible to prevent an excessive load from acting on the connection portion of the control cable 3 during the movement. The control panel 2 may be moved while being suspended by a heavy machine.

(7) Seventh Embodiment A gas insulated switchgear according to a seventh embodiment of the present invention will be described with reference to FIGS. 15 and 16. FIG. 15 is a plan view schematically illustrating the movement of the control panel 2 of the gas insulated switchgear according to the present embodiment, and FIG. 16 is a front view schematically illustrating a state in which the control panel is fixed to the circuit breaker. is there. Here, the front means a surface facing the traveling direction of the vehicle when the gas insulated switchgear is mounted on the vehicle bed during transportation.

  In the gas insulated switchgear according to this embodiment, the configuration for holding and fixing the control panel 2 to the circuit breaker 10 during transportation is the same as that shown in the first embodiment, but to the fixed position and the fixed position with respect to the circuit breaker 10. The moving means is improved.

  As shown in FIGS. 15 and 16, the control panel 2 includes a fixing seat 19 provided on the main body of the circuit breaker 10 which is one of the main devices of the gas insulated switchgear, a fixing seat 18 on the control panel side, and It is fixed by the fixing bolt 20, and the detailed configuration of these fixing means is the same as that of the first embodiment.

  Next, means for moving the control panel 2 to the fixed position with respect to the circuit breaker 10 will be described. The circuit breaker 10 main body is provided with two joints 240 whose rotational centers are on the same axis (on the vertical axis), and two rotating rods 27 fixed directly to the side surface of the control panel 2 are arranged in the horizontal direction. It is.

  As shown by a two-dot chain line in FIG. 15, the rotary rod 27 is a distance that can secure a space for inspection and maintenance between the circuit breaker 10 and the control panel 2 when the control panel 2 is installed on site. L4 is ensured.

  During transportation, the rotary rod 27 is rotated to move the control panel 2 of FIG. 15 by 90 degrees with respect to the position indicated by the solid line, that is, the side surface direction of the circuit breaker 10. On the other hand, the fixing seat 19 is fixed with the fixing seat 18 and the fixing bolt 20 on the control panel side.

  At this time, as shown in FIG. 16, it is configured to fit within W1 which is the width of the loading platform 36 of the vehicle for transportation.

  According to the present embodiment configured as described above, unlike the conventional gas insulated switchgear of FIG. 26, it is not necessary to divide and transport the main equipment unit 1 and the control panel 2 of the gas insulated switchgear. The main dimensions of the main body equipment portion 1 of the gas insulated switchgear including the panel 2 and the control cable 3 are within the transport allowable dimensions of the low floor trailer 43 and can be transported in a lump.

  As a result, the cost for disconnecting the control cable generated at the time of shipment from the factory and the cost for reconnecting the control cable in the field work can be reduced, thereby reducing the equipment cost and shortening both the factory and the site work processes. .

  Furthermore, the control panel 2 can be moved simply by giving a rotational motion to the rotating rod 27, and not only can it be installed when it cannot be suspended by heavy machinery work, such as when delivered to an indoor electric power station. It is possible to prevent an excessive load from acting on the connection portion of the control cable 3 during the movement.

(8) Eighth Embodiment A gas insulated switchgear according to an eighth embodiment of the present invention will be described with reference to FIGS. FIG. 17 is a plan view schematically illustrating the movement of the control panel 2 of the gas insulated switchgear according to the present embodiment, and FIG. 18 is a front view schematically illustrating a state in which the control panel is fixed to the circuit breaker. is there. Here, the front means a surface facing the traveling direction of the vehicle when the gas insulated switchgear is mounted on the vehicle bed during transportation.

  In the gas insulated switchgear according to this embodiment, the configuration for holding and fixing the control panel 2 to the circuit breaker 10 during transportation is the same as that shown in the first embodiment, but to the fixed position and the fixed position with respect to the circuit breaker 10. The moving means is improved.

  As shown in FIGS. 17 and 18, the control panel lower frame 107 of the control panel 2 is fixed to the main device frame 17 of the main body of the circuit breaker 10 which is one of the main devices of the gas insulated switchgear. It is fixed rotatably by a receiving seat 19, a fixing seat 18 on the control panel side and a fixing bolt 20, and the detailed configuration of these fixing means is the same as in the first embodiment.

  Next, means for moving the control panel 2 to the fixed position with respect to the circuit breaker 10 will be described. The main body of the circuit breaker 10 is provided with a joint 240 whose rotation center is on the same axis (on the vertical axis), and one rotating rod 27 fixed directly to the side surface of the control panel lower frame 107 of the control panel 2 is vertical. Arranged in the direction.

  As shown by a two-dot chain line in FIG. 17, the rotating rod 27 is a distance that can secure a space for inspection and maintenance between the circuit breaker 10 and the control panel 2 when the control panel 2 is installed on site. L4 is ensured.

  During transportation, the rotary rod 27 is rotated to move the control panel 2 of FIG. 17 by 90 degrees in the position indicated by the solid line, that is, in the lateral direction of the circuit breaker 10, and the control panel 2 is moved with respect to the circuit breaker 10. Then, the fixing seat 19 is fixed with the fixing seat 18 and the fixing bolt 20 on the control panel side.

  At this time, as shown in FIG. 18, it is configured to fit within W1 which is the width of the loading platform 36 of the vehicle for transportation.

  According to the present embodiment configured as described above, it is not necessary to divide and transport the main equipment unit 1 and the control panel 2 of the gas insulated switchgear as in the conventional gas insulated switchgear of FIG. 2. The main dimensions of the main body equipment portion 1 of the gas insulated switchgear including the control cable 3 are within the allowable transport dimensions of the low floor trailer 43, and can be transported in a lump. As a result, the cost for disconnecting the control cable generated at the time of shipment from the factory and the cost for reconnecting the control cable in the field work can be reduced, thereby reducing the equipment cost and shortening both the factory and the site work processes. .

  Furthermore, it is possible to move the control panel 2 simply by applying a rotational motion to the rotating rod 27. In addition, when the suspension work cannot be performed by heavy machinery work such as when delivered to an indoor electric power station, the control panel 2 can be installed and moved. At this time, it is possible to prevent an excessive load from acting on the connection portion of the control cable 3.

(9) Ninth Embodiment A gas insulated switchgear according to a ninth embodiment of the present invention will be described with reference to FIGS. In the gas insulated switchgear according to this embodiment, the configuration for holding and fixing the control panel 2 to the circuit breaker 10 during transportation is the same as that shown in the first embodiment, but means for moving the circuit breaker 10 to a fixed position. Is an improvement.

  That is, in the gas-insulated switchgear according to the present embodiment, five swing links 21, 22, 31, 32, 33 for connecting them are arranged between the circuit breaker 10 and the control panel 2, and these links Due to the action, the control panel 2 moves to the side surface of the circuit breaker 10 during transportation and is held and fixed by the above-described fixing means.

  Therefore, the configuration of this link mechanism will be described in detail with reference to FIG. 20. The swing link 21 is connected to the swing link 32 via a bendable intermediate joint 29, and the swing link 22 is connected to the swing link 33. It is connected via a bendable intermediate joint 30. Further, the intermediate joints 29 and 30 of the swing links 21, 32 and 22, 33 are connected by an intermediate link 31, and the other joints 23 and 24 of the swing links 21 and 22 are connected to the circuit breaker 10 side. The other joints 34 and 35 of the swing links 32 and 33 are disposed on the side surface of the control panel 2. The link configuration has a link mechanism in which two four-bar link mechanisms are coupled by arranging an intermediate link 31.

  FIG. 20 shows a state in which the control panel 2 is fixed to the circuit breaker 10 and a state at the time of field installation. The control panel 2 is securely fixed to the circuit breaker 10 (main device part 1) by the same fixing seat and link arrangement as in the first embodiment.

  During the site construction, the control panel 2 is moved to the proper installation position. When the control panel 2 is moved, the fixing seat 25 on the circuit breaker 10 side and the fixing bolt 20 on the fixing seat 26 are removed, and then the rotation of the joints 23 and 24 of the equipment lower frame side structure is restricted, and the intermediate link If the intermediate joints 29 and 30 to which the reference numeral 31 is connected are used as the driving joints, and the movement conditions such that the links 34 and 35 on the lower frame side for the control panel are used as the driven nodes are given to the rocking links 32 and 33, the four joints are provided. Since the shape of the link configuration is a parallelogram arrangement, the control panel 2 always moves in an upright state.

When the rocking links 21, 22 and 32, 33 are parallel to each other, the rocking links 21, 22, 32 are moved at a position where the rotation angle of the intermediate joints 29, 30 as the driving joints is twice as large as θ1 in the drawing. , 33 are all parallel. The horizontal movement distance L7 of the control panel 2 under the condition that the rotation of the intermediate joints 29 and 30 of the link is constrained and the driving joint is switched to 23 and 24 under this moving condition is the rotational radius R1 of the swing links 21 and 22. The numerical value of the following formula (2) is obtained by the rotation radius R2 rotation angle θ1 of the swing links 32 and 33.
[Equation 2]
L7 = (R1 + R2) cos θ1 (2)

  When the rotation of the intermediate joints 29, 30 is restricted, the sum of the link lengths R1 + R2 is obtained, and is always constant. Therefore, the rotation angle θ1 of the swing links 21, 22, 32, 33 for the control cable laid at the time of factory assembly. The extra length may be secured in consideration of the rotation radii R1 and R2.

  According to the present embodiment configured as described above, unlike the conventional gas insulated switchgear of FIG. 26, it is not necessary to divide and transport the main equipment unit 1 and the control panel 2 of the gas insulated switchgear. The main dimensions of the main body equipment portion 1 of the gas insulated switchgear including the panel 2 and the control cable 3 are within the transport allowable dimensions of the low floor trailer 43 and can be transported in a lump.

  As a result, the cost for disconnecting the control cable generated at the time of shipment from the factory and the cost for reconnecting the control cable in the field work can be reduced, thereby reducing the equipment cost and shortening both the factory and the site work processes. . In addition, the control panel 2 can move the distance calculated by the rotation radius and rotation angle based on the length of the two links just by giving the rotary motion to the swing links 21 and 22, and delivered to an indoor electric station etc. Installation is possible even when lifting work such as heavy machinery is not possible.

  Further, when the height H3 of the control panel 2 is high and the equipment dimensions must be accommodated within the transport limit height H4, the link turning radius R1 is small, and the distance between the control panel 2 and the main body equipment portion 1 of the gas insulated switchgear is small. When the necessary maintenance and inspection space L3 is insufficient, the rotation radius R2 for another link can be added to the rotation radius R1, which is an effective measure in securing the maintenance and inspection space L3.

(10) Tenth Embodiment A gas insulated switchgear according to a tenth embodiment of the present invention will be described with reference to FIGS. In the gas insulated switchgear according to this embodiment, the configuration for holding and fixing the control panel 2 to the circuit breaker 10 during transportation is the same as that shown in the first embodiment, but means for moving the circuit breaker 10 to a fixed position. Is an improvement.

  That is, in the gas insulated switchgear according to the present embodiment, five swing links 21, 22, 32, 33 and five intermediate links 31 are arranged between the breaker 10 main body and the control panel 2 to connect them. The swing link 21 is connected to the swing link 32 via an intermediate joint 29, and the swing link 22 is connected to the swing link 33 via an intermediate joint 30. The intermediate joints 29 and 30 of the link are connected by an intermediate link 31, and the other joints 23 and 24 of the swing links 21 and 22 are connected to the body of the circuit breaker 10 and the other of the swing links 32 and 33. The joints 34 and 35 are disposed on a fixing seat of the control panel 2. In this link configuration, two intermediate joints 31 are arranged to form two four-joint link structures.

  FIG. 22 shows a state in which the control panel 2 is fixed to the circuit breaker 10 and a state at the time of field installation. The control panel 2 is securely fixed to the circuit breaker 10 (main device part 1) by a fixing seat and a link arrangement having the same configuration as in the first embodiment.

  During the site construction, the control panel 2 is moved to the proper installation position. When the control panel 2 is moved, the fixing seat 25 of the circuit breaker 10 and the fixing bolt 20 of the fixing seat 26 are removed, and then the rotation of the joints 23 and 24 on the equipment lower frame side is restricted, and the intermediate link 31 is connected. When the moving conditions are set such that the intermediate joints 29 and 30 are the driving joints and the joints 34 and 35 on the control frame lower frame side are the driven joints, the shapes of the four-link structure are parallel. Due to the quadrilateral arrangement, the control panel 2 always moves in an upright state.

  When the swing links 21, 22 and 32, 33 are parallel to each other, the swing links 21, 22 are moved at a position where the rotation angle of the intermediate joints 29, 30 as the joints on the driving side is twice as large as θ 1 in the figure. , 32, 33 are all parallel. The horizontal movement distance L7 of the control panel 2 under the condition that the rotation of the intermediate joints 29 and 30 of the link is constrained and the driving joint is switched to 23 and 24 under this moving condition is the rotational radius R1 of the swing links 21 and 22. The numerical value of the above equation (2) is obtained by the rotation radius R2 rotation angle θ1 of the swing links 32 and 33.

  When the rotation of the intermediate joints 29, 30 is restricted, the sum of the link lengths R1 + R2 is obtained and is always constant. Therefore, the rotation angle θ1, The extra length may be secured in consideration of the rotation radii R1 and R2.

  According to the present embodiment configured as described above, unlike the conventional gas insulated switchgear of FIG. 26, it is not necessary to divide and transport the main equipment unit 1 and the control panel 2 of the gas insulated switchgear. The main dimensions of the main body equipment portion 1 of the gas insulated switchgear including the panel 2 and the control cable 3 are within the transport allowable dimensions of the low floor trailer 43 and can be transported in a lump.

  As a result, the cost for disconnecting the control cable generated at the time of shipment from the factory and the cost for reconnecting the control cable in the field work can be reduced, thereby reducing the equipment cost and shortening both the factory and the site work processes. .

  Furthermore, the control panel 2 can be moved by a distance calculated by the rotation radius and the rotation angle corresponding to the length of the two links only by giving a rotational motion to the driving joint 24 of the swing links 21 and 22, such as an indoor electric station. Installation is possible even when lifting work by heavy machinery work is not possible, such as when delivering to the factory.

  In addition, when the height H3 of the control panel 2 is high and the equipment dimensions must be accommodated within the transport limit height H4, the link turning radius R1 is small, and the control panel 2 and the main equipment unit 1 of the gas insulated switchgear are provided. When the necessary maintenance and inspection space L3 is insufficient, the rotation radius R2 for another link can be added to the rotation radius R1, and this is an effective measure in securing the maintenance and inspection space L3.

(11) Eleventh Embodiment A gas insulated switchgear according to an eleventh embodiment of the present invention will be described with reference to FIGS. In the gas insulated switchgear according to this embodiment, the specific configuration for holding and fixing the control panel 2 to the circuit breaker 10 during transportation is the same as in the case of the first embodiment, but to the fixed position with respect to the circuit breaker 10. The moving means is improved.

  That is, the fixing means for the circuit breaker 10 of the control panel 2 includes a fixing seat 18 provided at the lower end of the control panel 2 and a fixing seat 19 on the circuit breaker 10 side. The details are as described in the first embodiment.

  Next, means for moving the control panel 2 to the fixed position with respect to the circuit breaker 10 in the gas insulated switchgear according to the present embodiment will be described. In the present embodiment, a pair of extendable swing links that connect the breaker 10 main body and the control panel 2 are arranged in parallel. One swingable swing link is composed of a swing link 21 and a swing link 32 having a sleeve, and the other swing link is composed of a swing link 22 and a swing link 33 having a sleeve. Yes. The swing links 21 and 22 are rotatably supported on the side surface of the circuit breaker 10 by joints 242 and 241 to form a joint, and the swing links 32 and 33 are rotated to the side surface of the control panel 2 by the joints 232 and 231. The joint is configured to be supported.

  FIG. 24 shows a state in which the control panel 2 is fixed to the circuit breaker 10 and a state at the time of field installation. The control panel 2 is securely fixed to the circuit breaker 10 (main device part 1) by the fixing seat and the link arrangement described in FIG. During the site construction, the control panel 2 is moved to the proper installation position.

  When the control panel 2 is moved, the fixing seat 25 of the circuit breaker 10 and the fixing bolt 20 of the fixing seat 26 are removed, and then the expansion / contraction mechanism of the sleeve structure is constrained, and the joints 241 and 242 side are used as the driving joints. If a movement condition such that the board side is a driven node is given to 21 and 22, a four-node link structure is formed. Since each link structure is a parallelogram arrangement, the control panel 2 always moves in an upright state. The horizontal movement distance L7 of the control panel 2 is a value obtained by adding the expansion / contraction length L8 of the sleeve portion to the numerical value of the equation (1) determined by the rotation radius R1 and the rotation angle θ1 of the swing links 21 and 22.

  According to the present embodiment configured as described above, unlike the conventional gas insulated switchgear of FIG. 26, it is not necessary to divide and transport the main equipment unit 1 and the control panel 2 of the gas insulated switchgear. The main dimensions of the main body equipment portion 1 of the gas insulated switchgear including the panel 2 and the control cable 3 are within the transport allowable dimensions of the low floor trailer 43 and can be transported in a lump.

  As a result, the cost for disconnecting the control cable generated at the time of shipment from the factory and the cost for reconnecting the control cable in the field work can be reduced, thereby reducing the equipment cost and shortening both the factory and the site work processes. .

  Furthermore, the control panel 2 can move the distance calculated by the rotation radius and the rotation angle corresponding to the length of one link and the expansion / contraction length on the coaxial link only by giving a rotational motion to the swing links 21 and 22. Therefore, installation is possible even when lifting work cannot be performed by heavy machinery work, such as when delivered to an indoor electric station.

  In addition, when the height H3 of the control panel 2 is high and the equipment dimensions must be accommodated within the transport limit height H4, the link turning radius R1 is small, and the control panel 2 and the main equipment unit 1 of the gas insulated switchgear are provided. When the necessary maintenance and inspection space L3 is insufficient, a length L8 corresponding to the extension of the link can be added in addition to the rotation radius R1, which is effective in securing the maintenance and inspection space L3.

1 is a side view of a gas insulated switchgear according to a first embodiment of the present invention. The enlarged view in the A section of FIG. The side view enlarged view of the gas insulated switchgear of the 1st Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 1st Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 2nd Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 2nd Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 3rd Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 3rd Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 4th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 4th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 5th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 5th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 6th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 6th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 7th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 7th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 8th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 8th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 9th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 9th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 10th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 10th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 11th Embodiment of this invention. The side view enlarged view of the gas insulated switchgear of the 11th Embodiment of this invention. The single wire connection diagram of the gas insulated switchgear generally applied to an electric power distribution backbone system. Double bus standard equipment configuration of the gas insulated switchgear in the field installation state. Transportation of the main equipment part of a conventional gas insulated switchgear.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Main body apparatus part 2 ... Control panel 3 ... Control cable 10 ... Circuit breaker 10 ₁ ... Hydraulic operation mechanism 17 ... Main equipment part frame 18, 26 ... Fixing seat 19, 25 ... Fixing seat 20 ... Fixing bolt 21, 22, 31, 32, 33 ... swing links 23, 24, 34, 35, 231, 232, 240, 241, 242... Joint 27 ... rotating rods 29, 30 ... intermediate joint 31 ... intermediate link 36 ... trailer Loading section 37, 41 ... Wire 38 ... Hanging ear 39, 40 ... Fixed point 42 ... Control panel fixing frame 43 ... Low floor trailer 107 ... Lower frame for control panel

Claims (11)

A main body unit including a circuit breaker, a disconnector, a main bus, an instrument current transformer or an instrument transformer in a sealed metal container filled with an insulating gas as an insulating medium, and connected to the main body unit by a control cable. In a gas insulated switchgear comprising a control panel for controlling each device included in the main device unit, and transporting the device placed on a loading platform of a low floor trailer,
The control panel is configured to be able to be fixed in a state in which the control cable is connected to the main body unit during transportation.
A gas-insulated switchgear characterized in that a total length of the main body device section and the control panel at the time of fixing is within a transport limit limited total length of a loading platform of a low floor trailer. At the end of the main device section, a circuit breaker having an operation mechanism box at the bottom is arranged,
The gas insulated switchgear according to claim 1, wherein the control panel is fixed to the circuit breaker. At the end of the main device section, a circuit breaker having an operation mechanism box at the bottom is arranged,
In the vicinity of the circuit breaker, a columnar control panel fixing frame for fixing the control panel is provided,
The control panel fixing frame is provided at a position where the mounting surface thereof forms substantially the same plane as the surface on the control panel side of the circuit breaker,
The gas insulated switchgear according to claim 1, wherein the control panel is fixed in the vicinity of the circuit breaker by being fixed to the control panel fixing frame during transportation.   A wire having a length shorter than that of the control cable is connected in parallel to the control cable to the frame having the main body unit mounted thereon and the frame having the control panel mounted thereon. The gas insulated switchgear according to any one of claims 1 to 3. The frame on which the main device unit is mounted and the frame on which the control panel is mounted are coupled by a four-bar linkage mechanism having two swing links,
2. The control panel is configured to move from an installation position to a fixed position during transportation by rotating the two swing links from a horizontal position to a substantially vertical position. The gas insulated switchgear according to any one of -3. The circuit breaker and the control panel are coupled by a four-bar linkage mechanism having two swing links,
3. The control panel is configured to move from an installation position to a fixed position at the time of transportation by rotating the two swing links from a horizontal position to a substantially vertical position. Or the gas insulated switchgear of 3. The frame on which the main device unit is mounted is provided with a pivoting portion,
A link is attached to this pivoting part so as to be rotatable about the vertical direction,
The other end of the link is fixed to the control panel,
The link is rotated 90 degrees from a straight line connecting the installation position of the control panel and the main body unit, so that the control panel is configured to move horizontally from the installation position to the fixed position during transportation. The gas insulated switchgear according to any one of claims 1 to 3. The circuit breaker is provided with a pivot part,
A link is attached to this pivoting part so as to be rotatable about the vertical direction,
The other end of the link is fixed to the control panel,
The link is rotated 90 degrees from a straight line connecting the installation position of the control panel and the circuit breaker, so that the control panel is configured to move horizontally from the installation position to a fixed position during transportation. The gas insulated switchgear according to claim 2 or 3.   The link mechanism having a pair of swing links that can be bent by a joint provided at an intermediate portion and a connecting link that connects between the intermediate joints is used instead of the four-bar link mechanism. Item 6. A gas insulated switchgear according to Item 5.   The link mechanism having a pair of swing links that can be bent by a joint provided at an intermediate portion and a connecting link that connects between the intermediate joints is used instead of the four-bar link mechanism. Item 7. A gas insulated switchgear according to Item 6.   The gas insulated switchgear according to any one of claims 5 to 8, further comprising a slider mechanism in which the two links are connected via a sleeve structure and can be expanded and contracted in the axial direction.

Images