JPS642350Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the operating mechanism of the cutter and disconnector, which has been improved so that it can be operated without maintenance or inspection over a long period of time.

Traditionally, in order to ensure the reliability of equipment at power generation and substations, regular maintenance and
Inspection work was being carried out, and the same was true for the shiya disconnector. However, in recent years, there has been a tendency for gas shields and disconnectors to be used more frequently, and in the case of gas shields and disconnectors, the entire device is housed in an airtight container filled with insulating gas, which requires maintenance over a long period of time.・It has the advantage of not requiring inspection work. However, the operating mechanism for gas vents and disconnectors is still based on the conventional technology.The operating mechanism is housed in an operating mechanism box with a drip-proof structure, mainly consisting of mechanical operating parts, and an electrical control device that mainly has electrical contacts. , and external operation parts such as a terminal block, knife switch, and heater switch are used.
Since periodic inspections are required every two years, there has been a desire for an operating mechanism that requires no maintenance or inspection over a long period of time and is compatible with the maintenance and inspection periods for gas cylinders and disconnectors.

Therefore, the operating mechanism of the chopper and disconnector of the present invention consists mainly of mechanical operating parts such as link mechanisms that do not normally need to be handled, and electrical parts such as relays that do not normally need to be handled. control equipment, terminal blocks that need to be handled during normal times,
It consists of external operation parts such as knife switches, among which the former two, namely the operation part, are strongly influenced by the external environment over time and require maintenance and inspection work in a relatively short period of time to maintain performance. Focusing on the mechanical part and electrical control device, we integrated an oil-filled sealed chamber filled with oil, a sealed dry air chamber containing desiccant, and a drip-proof chamber with a drip-proof structure into an organic structure. An operating mechanism is provided within a single box body so as to achieve the desired performance as a whole while being connected to each other. an electrical control device such as a relay that does not need to be handled normally but whose performance would be impaired if placed in the oil-filled sealed chamber;
In addition to being isolated from the outside air, the oil-filled sealed chamber has the anti-rust and lubrication effect of oil to extend the maintenance and inspection period, and the drip-proof chamber is equipped with external operation parts that must be handled during normal times. It is an object of the present invention to provide an operating mechanism for a breaker that can be operated without maintenance or inspection for a long period of time while maintaining a convenient condition for normal use.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

A box body 1, which is an operation mechanism box, is divided by partition walls 1a and 1b to form an oil-filled sealed chamber 2, a sealed dry air chamber 3, and a drip-proof chamber 4. Note that the oil-filled sealed chamber 2, sealed dry air chamber 3, and drip-proof chamber 4 are each organically combined to function as the operating mechanism for the breaker.
Since it is necessary to achieve two functions, the box body 1 not only separates and houses an oil-filled sealed chamber 2, a sealed dry air chamber 3, and a drip-proof chamber 4 using partition walls 1a and 1b;
The oil-filled sealed chamber 2, sealed dry air chamber 3, and drip-proof chamber 4 must be arranged so that they can be mechanically and electrically connected to each other, for example, by means of operating axes (not shown), electrical wiring, etc. . In other words, as long as the mechanical cooperation is ensured, the mutual arrangement of the three functional divisions, that is, the oil-filled sealed chamber 2, the sealed dry air chamber 3, and the drip-proof chamber 4, should not be limited. The shape and configuration of the box 1 may also be set arbitrarily. The oil-filled sealed chamber 2 is filled with oil such as lubricating oil, and it is suitable for structural members for which rust prevention by oil is effective or at least to continue to be supplied with lubricating oil as appropriate, and which does not need to be handled in normal times. An operating mechanism section 6 is provided and sealed, which is comprised mainly of mechanical operating parts of the breaker, such as an operating source such as a mainspring spring, and a transmission mechanism such as a link mechanism. The operating shaft 6a of the operating mechanism section 6 is configured to be oil-tight with a suitable seal member (not shown) and is drawn out to the outside of the oil-filled sealed chamber 2. This is because the mainspring spring requires rust prevention and lubrication in order to alleviate hysteresis in its spring characteristics. In addition, a desiccant 7 such as silica gel is provided in the sealed dry air chamber 3.
At the same time, the closing coils or tripping coils, electrical relays, auxiliary switches, and limit switches, which do not need to be handled normally but whose performance will be impaired by oil if placed in the oil-filled sealed chamber 2, are stored. An electrical control device 8 mainly having electrical contacts such as the like is disposed and sealed. Furthermore, the drip-proof chamber 4 has an opening/closing door (not shown) and is formed to have a drip-proof structure that can be easily opened and closed. An external operation section 9 that needs to be handled from time to time is provided. That is, the terminal block is connected to a remote control room (not shown), and the connection may be changed, so it is necessary to handle it during normal times. Further, the knife switch is
It is used to disconnect remote operation in order to ensure work safety when inspecting the disconnector body or operating mechanism, and must be handled during normal times. Further, the heater switch is used to turn on and off the heater for dehumidifying the drip-proof chamber 4, and must be handled during normal times. If such an external operating section 9 that needs to be handled during normal times is placed in the oil-filled sealed chamber 2 or sealed dry air chamber 3, the sealed state must be broken every time the operation is performed. However, after the operation is completed, the sealed state must be restored, which makes the work extremely complicated. For this reason, the external operation section 9 is disposed within the drip-proof chamber 4 having a drip-proof structure that can be easily opened and closed.

In the present invention having the above structure, the operating mechanism section 6, which does not need to be handled in normal times and requires lubrication and rust prevention, is arranged in the oil-filled sealed chamber 2, so it is dust-proof and rust-proof. It is effective and the lubrication condition is good, making it possible to do no maintenance or inspection for a long period of time. In addition, the control device 8, which does not need to be handled in normal times but whose performance will be impaired if placed in the oil-filled sealed chamber 2, is placed in the sealed dry air chamber 3 in which the desiccant 7 is stored. Therefore, it is dust-proof and rust-proof, and there is no insulation deterioration or performance deterioration, and just like the operation mechanism section 6, it can be maintained and inspected for a long period of time. Furthermore, since the external operation section 9, which must be handled normally, is arranged in the drip-proof chamber 4 having a drip-proof structure that can be easily opened and closed, it can be easily operated.

As described above in detail with the embodiments, according to the present invention, an oil-filled sealed chamber filled with oil, a sealed dry air chamber containing a desiccant, and a drip-proof chamber having a drip-proof structure are integrated into one box. The operating mechanism, which does not need to be handled under normal conditions and requires lubrication and rust prevention, is placed inside the body, and the operating mechanism that does not need to be handled under normal conditions is placed inside the oil-filled sealed chamber. We have installed a control device that would impair performance if installed, and we have installed an external operation section in the protective room that must be handled during normal times, so it can be easily operated and will last for a long time. As a result, it is possible to obtain an operating mechanism for the cutter that can be operated without maintenance or inspection.

[Brief explanation of the drawing]

The figure is a structural diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Box body, 2...Oil-filled sealed chamber, 3...Dry air chamber, 4...Drip-proof chamber, 6...Operation mechanism section, 7...
Desiccant, 8...control device, 9...external mechanism section.

Claims (1)

[Scope of utility model registration request] A sealed oil-filled chamber filled with oil, a sealed dry air chamber containing a desiccant, and a drip-proof chamber with a drip-proof structure that can be opened and closed are provided in one box. An operating mechanism section consisting mainly of mechanical operating sections, such as a link mechanism, which does not require occasional handling, is suitable for at least one of rust prevention and lubrication using oil, and does not interfere with either, is installed, and the closed dry air Inside the room, there are mainly electrical contacts such as closing coils, tripping coils, relays, auxiliary switches, limit switches, etc., which do not need to be handled normally, but whose performance will be impaired by oil if placed inside the oil-filled sealed room. An electrical control device is provided in the drip-proof chamber, and external operating portions such as a terminal block, a knife switch, and a heater switch that need to be handled in normal times are provided in the drip-proof chamber. mechanism.