JPH0317522Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a high-voltage cabinet incorporating a switching device for a branch connection point to a consumer side in an underground distribution line.

Since this high-voltage cabinet is installed on a public road or on a customer's premises, it is desirable that the area it occupies is as small as possible.Therefore, there is a demand for downsizing of the high-voltage cabinet and miniaturization of the switchgear.

Therefore, the opening/closing device does not have an opening/closing operation mechanism,
A portable power-storage operating tool is attached to the opening/closing device to perform horizontal opening/closing operations only during opening/closing operations, thereby reducing the size of the opening/closing device.

However, in these methods, in order to improve the closing/opening performance, the operating tool becomes large and heavy, and the power storage operation and installation operation are time-consuming.

On the other hand, in order to eliminate these inconveniences, a switching device has been developed in which an opening/closing operation mechanism is provided at the top of the switching device to perform opening/closing operations in a vertical direction. However, while the switchgear for the main line and the main line within the high-voltage cabinet are the property of the electric power company, the switchgear for the branch line is the property of the consumer and must be installed by the consumer. However, the high-voltage cabinet has a compact opening/closing mechanism on the top of the switchgear, and the three switchgears are connected by a molded busbar, so when installing the switchgear to the high-voltage cabinet, it is difficult to connect the power side and the consumer side. A switchgear shall be installed together with the switchgear. Therefore, the consumer side has the disadvantage of having to pay for an expensive switchgear.

Considering these points, this idea focuses on the fact that the branch line has a separate circuit breaker, so the switchgear inside the high-voltage cabinet does not necessarily require load switching performance, and the power side does not take up space and has high load switching performance. The purpose of the present invention is to provide a high-pressure cabinet equipped with a switching device that is easy to open and close, and that can be installed extremely easily on the consumer side at a reduced cost. .

Therefore, as a switchgear on the power side, a three-pole interlocking type switch with a switching mechanism section on the upper part is installed, which connects the incoming main line and the bus bar, and the down main line and the bus bar, respectively. Disconnectors for each of the three phases were installed to connect the branch lines, and operating tools were also provided to manually open and close each disconnector. This operating tool consists of an operating rod that can be locked at one end to a rotatable holder provided at the rear inside the cabinet body, and a tubular locking rod that is rotatably suspended from the middle of the operating rod. A column projecting from the upper surface of the movable lid of the disconnect switch is formed by a notch provided at the lower end of the locking rod and a key-shaped notch of the rotating tube provided at the outer periphery of the lower end of the locking rod. It is configured to be locked.

An embodiment of this invention will be described below with reference to the drawings.

In Figures 1 and 2, 1 is an opening 1a on the front.
2 is a separator plate that horizontally divides the inside of the cabinet body 1 into two large and small parts, 3 is a large empty space divided by this separator plate 2, and 4 is also a small empty room. , 5 is a substantially horizontal support shelf extending between the separator plate 2 of this large cavity 3 and one side of the cabinet body 1, and 6 is six switch elements installed in a row horizontally on the support shelf 5. As shown in FIG. 3, the switch element 6 includes two fixed electrode tubes 6a that are fixed through the front and rear of the support shelf 5, and the fixed electrode tubes 6a are fitted over these two fixed electrode tubes 6a. and a movable lid 6b that electrically connects fixed electrodes built into the holder. Reference numeral 7 denotes a three-phase lead-in main line that penetrates the bottom plate 8 below this support shelf 5 and is introduced from underground into the large empty space 3 of the cabinet body 1. It is connected to the lower part of the fixed electrode tube 6a in front of the three switch elements 6. 9 is also the large empty room 3 to the bottom plate 8
A three-phase main line led underground through the
The upper ends of these main pull-down lines 9 are respectively connected to the lower portions of the fixed electrode tubes 6a in front of the other three adjacent switch elements 6 using cable heads 9a. 1
0 is the movable cover 6b of the three switch elements 6 that connect the three-phase main line 7 to its fixed electrode tube 6a.
These three switch elements 6 constitute a switch A. Reference numeral 11 denotes a connector that integrally connects the movable lids 6b of the three switch elements 6, each of which connects the three-phase main line 9 to its own fixed electrode cylinder 6a. It constitutes B. Reference numeral 12 denotes an opening/closing mechanism section provided above each of these connectors 10 and 11 in the large cavity 3. By operating the operating rod 12a of this opening/closing mechanism section 12 with an operating rod, the power is opened via a power storage link mechanism, etc. The movable lids 6b of the switches A and B move up and down. Reference numeral 13 denotes three disconnectors installed in a horizontal line in the small cavity 4, and each of these disconnectors 13 is placed in front and behind a horizontal support shelf 22 provided in the small cavity 4, as shown in FIG. Two fixed electrode tubes 13a are penetrated and fixed, and a movable lid 13b spans and covers these two fixed electrode tubes 13a to electrically connect the fixed electrodes built in the two fixed electrode tubes 13a. It is configured. 14 is each of these disconnectors 1
Cable head 1 is attached to the fixed electrode tube 13a in front of 3.
These branch lines 14 are three-phase branch lines to consumers whose upper ends are fixed via the base plate 4a, and these branch lines 14 penetrate the bottom plate 8 and are led underground. Reference numeral 15 denotes a molded bus bar that penetrates the separator plate 2 and electrically connects the same-phase fixed electrodes of the switches A and B and the disconnector 13; Fixed electrode tube 6a and disconnector 1
Branch portions 15a are provided on the fixed electrode tubes 13a at the rear of 3.
The outer periphery of each mold bus bar 15 is covered with a conductive layer, and the three-phase mold bus bars 15 are bundled together with a binding fitting 16. 17 connects the above-mentioned lead-in main line 7, drop-down main line 9, and branch line 14 to the bottom plate 8, respectively.
Cable press fitting fixed in the main body 1 at the top, 1
8 is the main line 7, the main line 9 and the branch line 14.
A cable cover 19 is provided on the bottom plate 8 by inserting it into a hole in the cable cover, and 19 is a movable cover 13 of the disconnector 13.
a tube body protruding from the upper surface of b; 19a a pin protruding from the opposite side of the tube body 19; 20 a front door covering the front surfaces of the switches A and B of the large chamber 3 and the opening/closing mechanism section 12; Reference numeral 21 denotes a small hole bored above the front door 20, and the operating rod 12a of the opening/closing mechanism 12 is located within this small hole 21.

The opening 1a of the cabinet body 1 has a door, but it is omitted in the drawing. Reference numeral 23 denotes a support that is pivotally supported on the inner wall of the main body 1 at the rear upper part of each disconnector 13. This support 23 locks the end of the operating tool 35 and is freely rotatable in the vertical direction.

Next, FIG. 5 shows an operating tool 35 for opening and closing the disconnector 13, which has a long groove 36a penetrating the opposing outer periphery of the bar-shaped operating rod 36 in the middle.
The operating rod 36 is inserted into a bifurcated portion at the upper end of the locking rod 37 of the hollow cylindrical body, and the pin 38, which is loosely passed through the long groove 36a, is supported by the bifurcated portion. 3
Reference numeral 9 denotes a notch formed at an opposing position on the lower end edge of the locking rod 37, 40 a rotating tube capped on the lower end of the locking rod 37, and 41 a locking tube covered with the rotating tube 40. A long hole is bored in the opposing outer periphery of the rod 37 parallel to the lower edge of the locking rod 37, and pins 42 are fixed through the opposing outer periphery of the rotation tube 40.
2 loosely passes through the elongated hole 41. Reference numeral 43 denotes an inclined portion 43 that is bored diagonally upward from the lower end edge of the rotation tube 40.
a and a key-shaped notch 43b that is bent at an acute angle following the inclined part 43a and parallel to the lower edge of the rotary tube 40; It is a spring whose both ends are locked to one place on the inner wall and the pin 42, and the force of this spring 44 always engages the deep part of the notch 39 of the locking rod 37 and the key shape of the key-shaped notch 43 of the rotation tube 40. The rotation tube 40 is located at a location where the inner portion 43b coincides with the inner portion 43b.

In this embodiment, the operating rod 12a in the small hole 21 of the front door 20 is used to open and close the switches A and B.
is inserted into the recess of a rod (not shown) having a recess at one end, and when the rod is turned and the operating rod 12a is rotated upward, the opening/closing mechanism 12 is activated and the switch A or B is movable. As shown in FIG. 3B, the lid 6b is removed from the fixed electrode tube 6a, and the switch A or B is opened. In addition, to close switch A or B, use the operating rod 1.
2a should be lowered.

To open and close the disconnector 13 with the operating tool 35 attached, insert and lock the tip of the operating rod 36 of the operating tool 35 into the receiver 23, push the operating rod 36 downward, and lock the lower end of the locking rod 37. Movable lid 1 of disconnector 13
3b against the tube body 19. As a result, tube body 1
The pins 19a protruding from both sides of the pin 9 enter the notch 39, and the rotating tube 40 fits into the inclined part 43 of the key-shaped notch 43.
a and rotates against the force of the spring 44. When the pin 19a enters the inner part of the notch 39 and reaches the inner part of the inclined part 43a, the rotation tube 40 is rotated by the force of the spring 44, and the pin 19a enters the inner part 43b of the key-shaped notch 43 and is locked. The movable lid 13b is locked to the lower end of the rod 37. Then, if you hold the free end of the operating rod 36 and pull it upward, the movable lid 13b will open.
is removed from the fixed electrode tube 13a. Then, rotate the rotating tube 40 by hand against the force of the spring 44, remove the pin 19a from the key-shaped notch 43, and remove the movable lid 13b.
can be removed from the locking rod 37 of the operating tool 35. Furthermore, in order to attach the movable lid 13b to the fixed electrode tube 13a, the procedure may be reversed.

In addition, in the above embodiment, the movable cover 13 of the disconnector 13
Although the tube body 19 was provided protruding from the upper surface of b, this tube body 19
may be an appropriate column.

In this way, in this design, the lead-in main line 7 of the large vacant room 3
The switching device of the main line 9, that is, the switching device on the power side, is provided with three-pole interlocking switches A and B, each of which has a switching mechanism section 12 on its upper part. By moving the operating rod 12a of the section 12 up and down using a suitable rod, the power storage link mechanism of the opening/closing mechanism section 12 acts, allowing the switches A and B to be opened and closed very easily. Therefore, the operation is simple and the load can be opened and closed, and since the opening/closing mechanism section 12 is provided above each of the switches A and B, it does not take up much space and can be made compact. Also, small vacant room 4,
That is, the disconnector 13 on the consumer side is a single-pole disconnector, and a simple operation tool 35 is installed in the receiver 2 at the rear of the small empty room 4.
3, and the movable cover 13b of the disconnector 13 is attached to and detached from the fixed electrode cylinder 13a by the lever principle.
It is extremely easy to attach and detach the disconnector 3b, and the disconnector 13 can be opened and closed crisply. Therefore, the disconnector 13 for each of the three phases is composed only of a pair of fixed electrode tubes and a movable lid, and the structure is simple and costs are reduced.In addition, the power side switches A and B can be mounted inside the cabinet body 1. Even after the small empty space 4 of the cabinet body 1
It can be easily installed inside.

As described above, this idea divides the inside of the high-voltage cabinet into the power side and the consumer side, and the power side is equipped with a compact, single-pole interlocking switch that can switch and close the load and is easy to operate, and the consumer side is equipped with a single-pole interlocking switch that is compact and easy to operate. By providing a single-pole disconnector that is easy to install, structure, and operate,
The disconnect switch can be installed regardless of installation work on the power side, reducing costs. Further, an operating tool for manually opening and closing the disconnector is provided, one end of the operating rod of the operating tool is locked to a rotatable holder provided at the rear inside the cabinet main body,
If the lower end of the locking rod, which is rotatably suspended from the middle of the operating rod, is locked to the movable lid of the disconnector and the operating tool is moved, the disconnector can be opened without much force due to the lever action. It can be opened and closed and is extremely easy to operate.

[Brief explanation of the drawing]

Figure 1 is a front view of this invention with the door removed, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is an explanatory side view of the switch of this invention, where A indicates the closed circuit state. , B
indicates an open circuit state. Figure 4 is an explanatory side view of the disconnector of this invention, where A shows the closed state and B
indicates an open circuit state. Figure 5 shows A, B,
C is a side view of the operating tool used in this invention,
They are a side view of a main part and a bottom view of a main part. In the figure, 1 is the main body, 2 is a separator plate, 3 is a large cavity, 4 is a small cavity, 5 is a support shelf, 6 is a switch element, 7 is a lead-in line, 9 is a drop-down line, 12 is an opening/closing mechanism part, 13 is a disconnector, 14 is a branch line, 15 is a mold busbar, 19
22 is a support shelf, 23 is a receiver, 35 is an operating tool, 36 is an operating rod, 37 is a locking rod, 39 is a notch, 40 is a rotating tube, 43 is a key-shaped notch, 44 is a It's a spring.

Claims (1)

[Scope of utility model registration request] In a high-voltage cabinet that connects a main line drawn from underground, a main line drawn down to the underground, and a branch line to the customer side via a busbar, a cabinet that opens and closes at the top connects the main line drawn into the ground and the busbar, and the mainline drawn down and the busbar, respectively. Three-pole interlocking type switches A and B having mechanical parts are provided on one side of the cabinet main body, and disconnectors for each of the three phases connecting the branch line and the bus bar are provided on the other side of the cabinet main body. , each disconnector has a pair of fixed electrode cylinders covered with a removable movable cover, and the mutually connected movable electrodes in the movable cover are connected to the fixed electrodes in each fixed electrode cylinder. A column with pins protruding on both sides is installed on the top surface of the movable lid,
In addition, a vertically rotatable support is pivotally supported in the cabinet body behind each of these disconnectors, and an operating tool is provided for opening and closing each of these disconnectors. A tubular locking rod is rotatably suspended from the middle of the operating rod, which can be locked at one end, and a notch is formed in which each of the pins can be locked when the column is inserted into the lower end of the locking rod. A high-pressure cabinet, characterized in that the locking rod is bored on both sides of the lower end.