JP2002025418A - Cutout assembly structure to gas-filling equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutout assembly structure for gas-filling equipment which can prevent gas sealed in a body case from leaking at exchange work of a cutout. SOLUTION: A connecting body 14 is mounted from the outside on a cutout assembly part 12a of a body case 12 with insulation gas being sealed in the inside and is made fixed on to the body case 12 by pressing a flange part 42 of the connecting body 14 toward the side of the body case 12 with a connecting body presser member 52, so that a fixing flange 28 for container body part 21 is made fixed to the connecting body presser member 52. As a result of this, the connecting body 14 is kept mounted airtightly on to the cutout assembly part 12a, even if the container body part 21 is removed. Therefore, insulation gas which is sealed in the body case 12 will not from the cutout assembly part 12a, even if exchange work of a high-pressure cutout 13 is conducted for maintenance or due to damage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutout mounting structure for a gas filling device such as a gas switch having a high pressure cutout.

[0002]

2. Description of the Related Art Generally, a ground-mounted transformer tower is used in an underground distribution line to supply electricity to low-voltage consumers. A transformer, a switch with a high-voltage cutout for protecting the transformer, a low-voltage circuit breaker, and the like are housed in the case of the transformer tower. As shown in FIG. 13, a high pressure cutout 1
02 is directly attached. That is, the main body case 10
A cut-out body 105 containing a current limiting fuse 104 is inserted into the insertion hole 103 on one side wall. A flange portion 106 is formed on the outer peripheral surface of the cutout body portion 105, and the flange portion 106
Is pressed toward the body case 101 side by
Cutout body 105 is fixed to main body case 101.

[0003]

In recent years, the size of transformer towers has been reduced, and accordingly, the size of the switches housed in the transformer towers needs to be reduced. However, air transformers are often used in the conventional transformer towers, and there is a limit to downsizing of the air transformers. Therefore, miniaturization can be considered by enclosing an insulating gas such as SF6 in the main body case 101 and using the air switch as a gas switch.
However, since the cut-out body 105 is attached to the main body case 101, consideration is given to gas-filled equipment, that is, measures for gas leakage, minimization of the opening to the sealed equipment case, and easy attachment and detachment of the cut-out in a gas-filled state. It is not designed in consideration of the nature. For this reason, when the high pressure cutout 102 is replaced due to maintenance, inspection, breakage, or the like, the insulating gas sealed in the main body case 101 leaks from the insertion hole 103, and the performance of the gas switch after the replacement operation is performed. Could not be maintained. In addition, the high-voltage cutout 102 is, in terms of its function, accompanied by an attachment / detachment operation of the built-in current limiting fuse 104, and an external force is applied to the high-pressure cutout 102 by this attachment / detachment operation.
There is also a possibility that the fixing position of the high-pressure cutout 102 with respect to the main body case 101 is displaced and airtight leakage occurs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a gas sealing device capable of preventing the gas sealed in a main body case from leaking when a cutout is replaced. An object of the present invention is to provide a cut-out mounting structure for a vehicle.

[0005]

According to a first aspect of the present invention, there is provided a cut-out mounting structure for a gas-filled device in which gas is sealed in a main body case, wherein a cut-out mounting portion of the main body case is provided. Fix the connection body airtight,
The gist of the invention is to fix the cutout to the main body case via the connecting body.

According to a second aspect of the present invention, in the first aspect of the invention, the connection body and the cutout are each formed of an insulating material, and the connection body and the cutout can be fitted to each other. A fitting portion and a cutout side fitting portion are respectively formed, and the connection body includes a connection conductor penetrated in an axial direction, and the cutout is electrically connectable to the connection conductor. The gist is that the connection conductor and the conductive portion are electrically connected when the two fitting portions are fitted to each other.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the connecting member is attached to the cutout mounting portion of the main body case from the outside, and the connecting member is attached to the outer peripheral surface of the connecting member. The connecting body is fixed to the main body case by pressing the formed flange portion toward the main body case by the connecting body pressing member, and a fixing flange formed on the outer peripheral surface of the cutout with respect to the connecting body pressing member. The gist is that is fixed.

According to a fourth aspect of the present invention, in the first or the second aspect of the present invention, the connecting member is attached to the cutout mounting portion of the main body case from the outside, and the outer peripheral surface of the connecting member is attached to the cutout mounting portion. The formed flange portion is inserted into a bolt erected on the outer surface of the main body case, and a connection body is fixed to the main body case by tightening a nut to the bolt, and a protruding portion of the bolt from the connection body is provided. Through the fixing flange formed on the outer peripheral surface of the cutout,
The gist of the invention is to fix the cutout to the main body case by tightening a nut to the bolt.

According to a fifth aspect of the present invention, in the first or the second aspect of the present invention, the connecting member is mounted on the cutout mounting portion of the main body case from the inside and the outer peripheral surface of the connecting member is attached to the cutout mounting portion. The connection body is fixed to the main body case by pressing the formed flange portion toward the main body case by the connection body pressing member, and the fixing flange formed on the outer peripheral surface of the cutout is erected on the outer surface of the main body case. The main point is that the cutout is fixed to the main body case by inserting the nut into the bolt and tightening a nut to the bolt.

According to a sixth aspect of the present invention, in the first or the second aspect of the present invention, the connector is attached to the cutout mounting portion of the main body case from the outside, and the outer peripheral surface of the connector is mounted on the outer peripheral surface of the connector. The formed flange portion is inserted into a bolt erected on the outer surface of the main body case, and the connecting body is fixed to the main body case by pressing the flange portion toward the main body case side by a connecting body pressing member. The fixing flange formed on the outer peripheral surface of the cutout is inserted into the protruding portion from the flange part of the cutout, and the nut is tightened to this bolt to fix the cutout to the main body case. Make a summary.

According to a seventh aspect of the present invention, in the first or second aspect of the present invention, a male screw portion is formed on a side of the connection body where the cutout mounting portion is mounted, and the connection body is cut. Attach the flange part formed on the outer peripheral surface of the connection body to the out mounting part from the outside and insert the flange part into the bolt erected on the outer surface of the main body case. Then, the connecting body is fixed to the main body case by tightening the nut, and a fixing flange formed on the outer peripheral surface of the cutout is inserted into a protruding portion of the bolt from the flange portion. The gist is that the cutout is fixed to the connecting body by tightening. (Operation) According to the first aspect of the present invention, the cutout is attached to the cutout attachment portion (attachment opening) of the main body case via a connection body fixed in an airtight manner. For this reason, even if the cutout is removed, the gas sealed in the main body case does not leak from the cutout mounting portion.

According to the second aspect of the present invention, in addition to the operation of the first aspect, the connecting body side fitting portion and the cutout side fitting portion are fitted to each other to form a connecting body. The connection conductor is electrically connected to the cutout conductive portion.

According to a third aspect of the present invention, in addition to the operation of the first or second aspect, the connecting member pressing member for pressing the flange portion of the connecting member toward the body case is cut. Out fixing flange is fixed.

According to a fourth aspect of the present invention, in addition to the operation of the first or second aspect, the flange portion of the connecting member is inserted through a bolt provided on the outer surface of the main body case. The connection body is fixed to the main body case by tightening the nut to the bolt. further,
A fixing flange of the cutout is inserted into a protruding portion of the bolt from the connecting body, and the cutout is fixed to the main body case by tightening a nut to the bolt.

According to a fifth aspect of the present invention, in addition to the effects of the first or second aspect, the connecting body is attached to the cutout mounting portion of the main body case from the inside, The connection body is fixed to the main body case by the flange of the connection body being pressed toward the main body case by the connection body pressing member. Furthermore, the fixing flange of the cutout is inserted into a bolt erected on the outer surface of the main body case, and the cutout is fixed to the main body case by fastening a nut to the bolt.

According to a sixth aspect of the present invention, in addition to the function of the first or second aspect, the flange portion of the connecting member is inserted into a bolt provided upright on the outer surface of the main body case. The connection body is fixed to the main body case by pressing the flange portion toward the main body case by the connection body pressing member. Further, a cutout fixing flange is inserted into a protruding portion of the bolt from the flange portion, and the cutout is fixed to the connection body by tightening a nut to the bolt.

According to a seventh aspect of the present invention, in addition to the operation of the first or second aspect, the flange portion of the connection body is inserted into a bolt provided upright on the outer surface of the main body case. The connection body is fixed to the main body case by tightening the nut to the male screw portion protruding into the main body case. Further, a fixing flange of the cutout is inserted into a protruding portion of the bolt from the flange portion, and the nut is tightened to the bolt to fix the cutout to the connection body.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a gas switch with a high-pressure cutout will be described below with reference to FIGS. The gas switch with high-pressure cutout is connected, for example, to the primary side of a ground-mounted transformer. The transformer is protected from overcurrent (especially short-circuit current) by high-voltage cutout, and the primary power supply can be selectively switched from two systems by a gas switch.

As shown in FIG. 1, on the upper surface of a main body case 12 of a gas switch 11 as a gas filling device in which an insulating and arc-extinguishing gas such as SF6 (sulfur hexafluoride) is filled. A plurality of high-pressure cutouts 13 corresponding to the respective phases on the load side are provided in parallel (only one phase is shown in FIG. 1). The high-pressure cutout 13 is attached to the main body case 12 via a connector 14 airtightly fixed to a cutout attachment portion 12 a on the upper surface of the main body case 12.

(High-Pressure Cutout) As shown in FIGS. 1 and 2, the high-pressure cutout 13 is integrally formed of a synthetic resin material having an insulating property, and has a cylindrical housing body having one end opened. 21, an inner cylinder 22 a and an outer cylinder 22
b, and a double cylindrical fitting portion 22. The housing body portion 21 and the fitting portion 22 have a horizontal L-shape in which the center axes thereof are orthogonal to each other. A power supply side electrode 23 and a load side electrode 24 are provided inside the housing body 21, and both electrodes 23 and 24 are electrically connected by disposing a current limiting fuse 25 inside the housing body 21. ing. A lid 2 for closing the opening 21 a is provided at the outer end of the housing body 21.
The current limiting fuse 25 can be attached to and detached from the housing body 21 by removing the lid 26.

In the fitting portion 22, a fitting recess 27 is provided between the outer periphery of the inner cylindrical portion 22a and the inner periphery of the outer cylindrical portion 22b. As shown in FIG. 4, a flat rectangular fixing flange 28 is protruded from the outer periphery of the distal end of the fitting portion 22, and a fixing hole 28a is formed at each of the four corners of the fixing flange 28. Have been. As shown in FIG. 1, the power-supply-side electrode 23 is connected via a connection conductor 31 to a tulip-shaped primary terminal 32 disposed in the inner cylindrical portion 22a. The load-side electrode 24 is connected to a secondary terminal 34 via a connection conductor 33, and the secondary terminal 34 is connected to a transformer (not shown) via a lead wire (not shown) connected by tightening a screw 35. It is connected to the primary side (not shown).

(Connector) As shown in FIGS. 1 and 2, the connector 14 is integrally formed of a synthetic resin material having an insulating property, and the insertion portion 41, the flange portion 42, and the fitting cylinder portion 4 are formed.
3 is provided. The insertion portion 41 is formed in a truncated cone shape whose diameter is reduced toward the distal end (downward in FIG. 1), and can be inserted into the cutout attachment portion 12a. The flange portion 42 has a larger diameter than the cutout mounting portion 12a, and the main body case 12 of the flange portion 42 has a larger diameter.
An annular groove 44 is formed on the side surface, that is, a portion that contacts the outer surface of the main body case 12. An O-ring 45 made of an insulating synthetic resin material is mounted in the groove 44.

The fitting tube portion 43 is formed in a cylindrical shape with an open top, and can be fitted to the fitting portion 22 with each other. That is, the fitting cylinder 43 can be fitted into the fitting recess 27 of the high-pressure cutout 13, and the inner cylinder 22 a of the high-pressure cutout 13 can be fitted into the fitting cylinder 43. ing. A connection conductor 46 penetrates through the center of the connection body 14 in the axial direction of the connection body 14. One end of the connection conductor 46 is led out from the tip of the insertion part 41 to the outside, and the other end is led out of the fitting tube part 43.

The fitting part 22 and the fitting cylinder part 43 are
A cutout side fitting portion and a connector side fitting portion which can be fitted to each other are formed. Further, the primary terminal 32 constitutes a conductive portion which can be electrically connected to the connection conductor 46.

(Assembling Structure) As shown in FIGS. 2 and 4,
On the outer surface of the main body case 12, a plurality of bolts 51 are erected near the opening edge of each cutout mounting portion 12a. The connection body 14 is mounted on the cutout mounting portion 12a from outside. That is, the insertion portion 4 of the connection body 14
1 is inserted into the cutout mounting portion 12a from the outside (the upper side in FIGS. 1 and 2) and protrudes into the main body case 12. Further, the lower surface of the flange portion 42 of the connection body 14 is locked to the opening edge of the cutout attachment portion 12a. The connecting body 14 is fixed to the main body case 12 by pressing the flange portion 42 toward the main body case 12 with the connecting body pressing member 52.

That is, as shown in FIG. 2, the connecting body pressing member 52 is formed in a low square cylindrical shape whose lower part is opened.
A plurality of insertion holes 52a are formed on the outer peripheral edge of the outer surface of the connector pressing member 52. In addition, the connector holding member 5
2, three connecting body insertion holes 52b (only one is shown in FIG. 2) correspond to the fitting cylindrical part 43 of the connecting body 14 mounted on each cutout mounting part 12a so as to be insertable. It is formed so that. As shown in FIGS. 1 and 2, each of the bolts 51 and the fitting cylindrical portion 43 of the connector 14 are provided with an insertion hole 52 of a connector holder 52.
a and the connector insertion hole 52b are inserted, and the connector pressing member 52 is fixed to the main body case 12 by tightening the nut 53 to each bolt 51.

In other words, the connecting body 14 is fixed to the main body case 12 by the flange portion 42 being sandwiched between the outer surface of the main body case 12 and the inner surface of the connecting body pressing member 52. As the nut 53 is tightened, the flange portion 42 is pressed toward the main body case 12 via the connector holding member 52. O-ring 45 in groove 44
Is crushed and is in close contact with the outer surface of the main body case 12, whereby airtightness inside and outside the main body case 12 is ensured. A tightening buffer member 54 is interposed between the outer surface of the flange portion 42 and the inner surface of the connector holding member 52.

As shown in FIGS. 2 and 4, four bolts 55 are erected near each opening edge of the connector pressing member 52. Each bolt 55 is arranged so that it can be inserted into each fixing hole 28 a of the fixing flange 28. Each bolt 55 has a packing 56,
Each fixing hole 28a of the fixing flange 28, the buffer member 57
And the cutout holding member 58 is inserted.

As shown in FIG. 3, the cutout holding member 58 is formed in a rectangular plate shape having an arc portion 58a along the outer periphery of the fitting portion 22. Further, the cutout holding member 58 is formed with two through holes 58b so as to coincide with two fixing holes 28a adjacent to each other in the direction along the central axis of the housing body 21. The two cut-out holding members 58 are connected to the respective arc portions 5.
8a are arranged so as to face each other via the fitting portion 22, and the through holes 58b are respectively inserted into the bolts 55.

Each bolt 51 is provided with a nut 5
By tightening 9, the high-pressure cutout 13 is fixed to the connector holding member 52. The fitting tube 43 of the connector 14 is fitted in the fitting recess 27 of the high-voltage cutout 13, and the inner tube 22 a of the high-pressure cutout 13 is fitted in the fitting tube 43 of the connector 14. are doing. One end of the connection conductor 46 is connected to each phase electrode portion (not shown) inside the main body case 12. The other end of the connection conductor 46 is fitted and connected to the primary terminal 32 of the high voltage cutout 13.

Next, the operation and effect of the gas switch constructed as described above will be described. High pressure cutout 13
Is fixed to the main body case 12 via the connecting body 14. For this reason, unlike the case where the high-pressure cutout 13 is directly attached to the main body case 12, even if the high-pressure cutout 13 is removed,
A connection body 14 is hermetically mounted on 2a. Therefore, even when the high-pressure cutout 13 is replaced due to maintenance or damage, the insulating gas sealed in the main body case 12 does not leak from the cutout mounting portion 12a, and the gas switch 11 Insulation performance can be maintained. Further, at the time of replacing the high-pressure cutout 13, there is no need to perform the operation in consideration of airtightness, so that the efficiency of the replacing operation can be improved. Furthermore, since the force for attaching / detaching the current limiting fuse 25 applied to the high-pressure cutout 13 does not directly act on the cutout mounting portion 12a, no external force is applied to the cutout mounting portion 12a, and the airtightness is not impaired. Further, since the bolt 55 is erected on the connecting body pressing member 52 by welding, welding to the main body case 12 can be reduced. (Second Embodiment) Next, a second embodiment of the present invention will be described. This embodiment is different from the first embodiment in that the connector pressing member 52 is omitted. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

As shown in FIG. 5 and FIG.
2, a plurality of bolts 61 are erected on the periphery of the opening of the cutout mounting portion 12a. Further, a plurality of insertion holes 62 are formed in the flange portion 42 of the connection body 14, and a deep counterbore 63 is formed above each of the insertion holes 62. Each bolt 61 has a corresponding one of the insertion holes 6 of the connector 14.
2 are inserted from the outside (the upper side in FIGS. 5 and 6), and the nuts 64 are tightened to the respective bolts 61, whereby the connector 14 is fixed to the main body case 12.

Each nut 64 is located inside the deep counterbore 63, and the packing 56 and the fixing flange 28 are provided on the protruding portions of the bolts 61 from the upper surface of the flange portion 42.
The fixing holes 28a and the through holes 58b of the cutout holding member 58 are respectively inserted from outside. Then, by tightening the nut 65 to each bolt 61, the high-pressure cutout 13 is connected to the connecting body 14
Fixed against. Therefore, according to the present embodiment, both the connection body 14 and the high-pressure cutout 13 are inserted through the plurality of bolts 61 erected on the main body case 12, and the nuts 64 and 65 are respectively fastened to the respective bolts 61. Thereby, it is fixed to main body case 12. For this reason, the connector pressing member 52 and the tightening buffer member 54 in the first embodiment are not required. Therefore, the number of parts can be reduced, and the structure for attaching the high-pressure cutout 13 to the main body case 12 can be simplified. (Third Embodiment) Next, a third embodiment of the present invention will be described. In the present embodiment, the connection body 14 is
The second embodiment differs from the first embodiment in that the second embodiment is fixed to the inner surface of the first embodiment.

As shown in FIG. 7 and FIG.
2 on the inner surface and the outer surface,
A plurality of bolts 71 and a plurality of bolts 72 are erected on the periphery of the opening. Fitting tube part 4 of connection body 14
Reference numeral 3 is inserted into the cutout mounting portion 12a from the inside (the lower side in FIGS. 7 and 8), and projects outside the main body case 12. The connector insertion hole 52b of the connector pressing member 52 is inserted into the insertion portion 41 of the connector 14, and the insertion holes 52a of the connector pressing member 52 are inserted through bolts 71, respectively. And each bolt 7
The connection body 14 is fixed to the inner surface of the main body case 12 by tightening the nuts 73 with respect to the respective 1. The airtightness between the connection body 14 and the inner surface of the main body case 12 is ensured by the O-ring 45 attached to the groove 44 on the upper surface of the flange portion 42 being in close contact with the inner surface of the main body case 12.

On the other hand, the fixing holes 28 a of the high-pressure cutout 13, the buffer members 57, and the respective through holes 58 b of the cutout holding member 58 are inserted into the bolts 72, respectively. The high-pressure cutout 13 is fixed to the main body case 12 by tightening 75. High pressure cutout 13
The airtightness between the housing and the outer surface of the main body case 12 is ensured by the packing 56.

Therefore, according to the present embodiment, the connecting member 14
Is fixed to the inner surface of the main body case 12, so that the flange portion 42 of the connection body 14 and the connection body pressing member 52 are located inside the main body case 12. That is, the number of members exposed to the outside of the main body case 12 is reduced.
Therefore, unlike the case where the connecting body 14 is fixed to the outer surface of the main body case 12, the appearance of the high-pressure cutout 13 attaching portion can be improved. (Fourth Embodiment) Next, a fourth embodiment of the present invention will be described. This embodiment is different from the first embodiment in that a bolt inserted into the fixing hole 28a of the fixing flange 28 is erected on the main body case 12 instead of the connector holding member 52.

As shown in FIGS. 9 and 10, on the outer surface of the main body case 12, a plurality of bolts are provided on the periphery of the opening of the cutout mounting portion 12a and on the cutout mounting portion 12a side from the standing position of each bolt 51. 81 are erected. Further, a plurality of insertion holes 82 are formed in the flange portion 42 of the connector 14 so as to correspond to the respective fixing holes 28 a of the high-pressure cutout 13.

Each of the bolts 81 has a corresponding one of the insertion holes 8 of the connector 14.
2 has been inserted. The connecting member insertion hole 52b of the connecting member pressing member 52 is inserted into the insertion portion 41 of the connecting member 14, and the respective insertion holes 52a of the connecting member pressing member 52 are inserted into the bolts 71, respectively. The connecting body 14 is fixed to the outer surface of the main body case 12 by tightening the nuts 73 to the bolts 71, respectively. The packing 56, the fixing holes 28 a of the fixing flange 28, and the through holes 58 b of the cutout holding member 58 are inserted through the protruding portions of the respective bolts 81 from the upper surface of the flange portion 42. The high-pressure cutout 13 is fixed to the main body case 12 by tightening the nut 83.

Therefore, according to the present embodiment, similarly to the first embodiment, the high-pressure cutout 13 is fixed to the main body case 12 via the connecting member 14 so that the high-pressure cutout 13 is fixed. Even if the replacement work is performed, the insulating gas sealed in the main body case 12 does not leak from the cutout mounting portion 12a, and the insulation performance of the gas switch 11 can be maintained. (Fifth Embodiment) Next, a fifth embodiment of the present invention will be described. This embodiment is different from the first embodiment in that the connector pressing member 52 is omitted.

As shown in FIGS. 11 and 12, a plurality of bolts 91 are erected near the outer edge of the opening of the main body case 12. Further, a male screw 92 is formed at the base end of the insertion portion 41 of the connection body 14, and a plurality of insertion holes 93 are formed in the flange 42 of the connection body 14.
The insertion portion 41 of the connection body 14 is inserted into the cutout attachment portion 12a from the outside (the upper side in FIGS. 11 and 12), and is tightened with a nut 94 to a male screw portion 92 protruding into the main body case 12. The connecting body 14 is fixed to the main body case 12.

Although the connecting member 14 tends to move inward with the tightening of the nut 94, the lower surface of the flange portion 42 is locked to the periphery of the opening of the cutout mounting portion 12a. The movement of the body 14 into the body case 12 is restricted. Flange part 4 of each bolt 91
The packing 56, the fixing holes 28 a of the fixing flange 28, and the through-holes 58 b of the cutout holding member 58 are inserted through the protruding portions from the upper surface of the 2. Then, the high-pressure cutout 13 is fixed to the main body case 12 via the connecting body 14 by tightening the nut 95 to each bolt 91.

Therefore, in the present embodiment, the connection body 14 is fixed to the main body case 12 only by tightening the nut 94 to the male screw portion 92 from the inside of the main body case 12. For this reason, the work of attaching the connection body 14 to the main body case 12 is simplified.

The above embodiments may be modified and implemented as follows. In the above embodiments, the present invention is embodied in the mounting structure of the high-pressure cutout 13 to the main body case 12 of the gas switch 11 with the high-pressure cutout. It may be applied to a cutout mounting structure. Even in this case, it is possible to prevent gas leakage during the cutout replacement operation. Further, the present invention may be applied to a cutout mounting structure for a case in which gas is not sealed, such as a case for an air switch.

In each of the above embodiments, the housing body 21 accommodating the current limiting fuse 25 is attached to the main body case 12, but the current limiting fuse 25 is not accommodated and the lead wire is simply derived. May be attached.

In each of the above embodiments, the shape of the connection body 14 may be changed to an arbitrary shape that allows the cutout mounting portion 12a to be hermetically sealed. For example, the insertion portion 41 may be omitted. Even in this case, the cut-out mounting portion 12
a is hermetically sealed by the connecting body 14, and the housing body 21 is attached to the main body case 12 via the connecting body 14.

Deep counterbore 63 in the third embodiment
May be formed on the fixing flange 28 side of the housing body 21. In each of the above embodiments, the O-ring 45 is interposed between the connector 14 and the main body case 12 to ensure airtightness inside and outside the main body case 12, but is replaced with another sealing device such as packing. You may.

Next, technical ideas other than the claimed invention which can be understood from the above embodiments will be described together with their effects. The sealing device (O-ring 45) is interposed between the connection body and the main body case, the cut-out mounting structure for gas-filled equipment according to any one of claims 1 to 7. With this configuration, airtightness inside and outside the main body case can be secured with a simple configuration.

A deep counterbore capable of accommodating a nut is formed above the bolt insertion hole of the flange portion.
Cut-out mounting structure for gas-filled equipment described in 1. With this configuration, the nut is housed in the deep counterbore and does not protrude from the flange portion of the connection body. Therefore, the flange portion of the connector and the fixing flange of the cutout can be brought into close contact with each other.

[0049]

According to the present invention, when the gas filling device and the cutout are integrated, the cutout is not directly fixed, so that the mounting opening of the gas filling device case can be made as small as possible. The cutout is maintained and inspected and replaced without taking into account any gas leaks in the gas-filled equipment because the cutout is detachably fixed to the cutout via a connector that is airtightly fixed. Can be easily implemented. In addition, since the operation force for inserting and removing the fuse generated in the cutout is not directly applied to the mounting opening of the gas filling device, the airtightness of the mounting portion is not impaired.

[Brief description of the drawings]

FIG. 1 is a front cross-sectional view of a main part of a high-pressure cutout mounting portion according to a first embodiment.

FIG. 2 is an exploded front sectional view showing attachment of a connection body and a high-pressure cutout in the first embodiment.

FIG. 3 is a plan view of a high pressure cutout.

FIG. 4 is a sectional view taken along line 1-1 in FIG. 1;

FIG. 5 is a front sectional view of a main part of a high-pressure cutout mounting portion according to a second embodiment.

FIG. 6 is an exploded front sectional view showing attachment of a connector and a high-pressure cutout in a second embodiment.

FIG. 7 is a front cross-sectional view of a main part of a high-pressure cutout mounting portion according to a third embodiment.

FIG. 8 is an exploded front sectional view showing attachment of a connector and a high-pressure cutout according to a third embodiment.

FIG. 9 is a front cross-sectional view of a main part of a high-pressure cutout mounting portion according to a fourth embodiment.

FIG. 10 is an exploded front sectional view showing attachment of a connector and a high-pressure cutout in a fourth embodiment.

FIG. 11 is a front sectional view of a main part of a high-pressure cut-out mounting portion according to a fifth embodiment.

FIG. 12 is an exploded front sectional view showing attachment of a connector and a high-pressure cutout according to a fifth embodiment.

FIG. 13 is a front sectional view showing a conventional high-pressure cutout mounting structure.

[Explanation of symbols]

11 gas switch (gas filling device), 12 body case, 12a cutout mounting part (mounting opening), 1
3 ... high-pressure cutout, 14 ... connection body, 21 ... housing body part, 22 ... fitting part (cutout side fitting part), 22a ...
Inner cylinder part, 22b ... outer cylinder part, 25 ... current limiting fuse, 27 ...
Fitting recess, 28: fixing flange, 28a: fixing hole,
31 connection conductor, 32 primary terminal (conductive part), 41
Insertion part, 42 ... flange part, 43 ... fitting cylinder part (connecting body side fitting part), 45 ... O-ring, 46 ... connecting conductor, 52 ... connecting body pressing member, 56 ... packing, 62, 82, 93 ...
Insertion hole, 63: counterbore, 92: male thread, 53, 5
9, 64, 65, 73, 75, 83, 94, 95 ... nuts, 51, 55, 61, 71, 72, 81, 91 ... bolts.

Claims (7)

[Claims] In a cut-out mounting structure for a gas-filled device in which gas is sealed in a main body case, a connecting body is air-tightly fixed to a cut-out mounting portion of the main body case. Cut-out mounting structure for gas-filled equipment in which the cut-out is fixed to the body case via 2. The connector and the cutout are each formed of an insulating material, and both have a connector-side fitting portion and a cutout-side fitting portion that can be fitted to each other. The connection body includes a connection conductor penetrated in the axial direction, the cutout includes a conductive portion that is electrically connectable to the connection conductor, and the two fitting portions are fitted to each other. The cutout mounting structure for a gas-filled device according to claim 1, wherein the connection conductor and the conductive portion are electrically connected when the connection is made. 3. A connection is made by mounting the connector from the outside to the cutout mounting portion of the main body case and pressing a flange formed on the outer peripheral surface of the connection body toward the main body case by the connection body pressing member. 3. The gas filling device according to claim 1, wherein the body is fixed to a main body case, and a fixing flange formed on an outer peripheral surface of a cutout is fixed to the connector holding member. 4. Cutout mounting structure. 4. A connector is attached to the cutout mounting portion of the main body case from the outside, and a flange formed on an outer peripheral surface of the connection body is inserted into a bolt erected on the outer surface of the main body case. The connection body is fixed to the main body case by tightening a nut to the bolt, a fixing flange formed on the outer peripheral surface of the cutout is inserted into a protruding portion of the bolt from the connection body, and the bolt is The cutout mounting structure for a gas-filled device according to claim 1 or 2, wherein the cutout is fixed to the main body case by tightening a nut. 5. A connection by mounting a connector from the inside to a cutout mounting portion of a main body case and pressing a flange formed on an outer peripheral surface of the connection body toward a main body case by a connection body pressing member. Fix the body to the body case, insert the fixing flange formed on the outer peripheral surface of the cutout into the bolt erected on the outer surface of the body case, and tighten the nut to this bolt to cut the cutout. 3. The cutout mounting structure for a gas-filled device according to claim 1, wherein the cutout mounting structure is fixed to a main body case. 6. A connection body is attached to a cutout mounting portion of the main body case from the outside, and a flange formed on an outer peripheral surface of the connection body is inserted through a bolt erected on an outer surface of the main body case. The connecting body is fixed to the main body case by pressing the flange portion toward the main body case by a connecting body pressing member, and a fixing flange formed on an outer peripheral surface of a cutout at a protruding portion of the bolt from the flange portion. The cut-out mounting structure for a gas-filled device according to claim 1 or 2, wherein the cut-out is fixed to the main body case by inserting a nut into the bolt. 7. A male screw portion is formed on the cutout mounting portion mounting side of the connecting member, and the connecting member is mounted on the cutout mounting portion from outside and formed on the outer peripheral surface of the connecting member. The connected body is fixed to the main body case by inserting the formed flange portion into a bolt erected on the outer surface of the main body case, and tightening a nut to the male screw portion protruding into the main body case. 2. A cut-out is fixed to a connection body by inserting a fixing flange formed on an outer peripheral surface of the cut-out into a protruding portion from the flange portion, and tightening a nut to the bolt. Or the cut-out attachment structure to the gas filling equipment according to claim 2.