KR20240022308A - Locking apparatus for gas return port of gas insulation switchgear - Google Patents

Abstract

The present invention relates to a GIS gas recovery port locking device, comprising a main body covering a gas recovery port, a bolt connecting the main body and the gas recovery port, and a locking cover disposed on the main body to be capable of linear reciprocating movement, and the locking device. The bolt is disposed between the cover and the main body so that the bolt cannot be turned, which has the effect of preventing recovery of gas from the live section.

Description

GIS gas recovery port lock {LOCKING APPARATUS FOR GAS RETURN PORT OF GAS INSULATION SWITCHGEAR}

The present invention relates to a GIS gas recovery port locking device, and more specifically, to a GIS gas recovery port locking device that can lock a recovery port for recovering SF6 gas from a gas insulated switch.

As power demand rapidly increases due to industrial development, power systems are also becoming larger in capacity and ultra-high voltage, and the stabilization and reliability of power facilities are very important.

Generally, a switch device is installed on a transmission line or distribution line, and is a device that stably protects the power system by not only switching the switch under normal conditions but also opening the line under abnormal conditions such as ground fault or short circuit.

Switchgear can be classified into Air Insulated Switchgear (AIS), Solid Insulated Switchgear (SIS), and Gas Insulated Switchgear (GIS) depending on the insulating medium.

Gas insulated switchgear is used for indoor and outdoor power plants and substations. It is a switchgear that protects the power system by not only switching load current under normal use conditions but also safely switching lines under abnormal conditions such as accidents or short-circuit currents.

A gas insulated switchgear is a switchgear that has a gas circuit breaker, a disconnecting switch (DS), an earth switch (ES), a busbar, and conductors built into a container filled and sealed with SF6 gas. .

Meanwhile, the gas insulated switchgear may be provided with a gas injection port and a gas recovery port through which SF6 gas can be injected or recovered.

At this time, in the case of the gas recovery port, the bolt placed at the front can be unscrewed and the hose connected, so even though the work must be done after recovering the gas in the work section, the gas in the live line section is recovered, causing casualties and large-scale accidents due to insulation destruction of the gas insulated switchgear. Problems that cause power outages may occur.

Therefore, there is a need to develop a locking device that can prevent gas from being recovered from a live section by mistake.

The present invention was created to improve the problems of the conventional GIS gas recovery port as described above, and provides a GIS gas recovery port locking device that can prevent the gas recovery port for the live line section from opening and recovering gas from the live line section. The purpose is to provide.

In order to achieve the above-described object, the GIS gas recovery port locking device according to the present invention includes a main body covering the gas recovery port; Bolts connecting the main body and the gas recovery port; and a locking cover disposed on the main body to be capable of linear reciprocating movement, wherein the bolt may be disposed between the locking cover and the main body.

At this time, when the bolt is disposed between the locking cover and the main body, the main body can be maintained coupled to the GIS gas recovery port.

The GIS gas recovery port locking device according to the present invention further includes a driving part that moves the locking cover, wherein the driving part includes a motor that provides power; A gear unit rotated according to the operation of the motor; and a movable body coupled to the gear unit to perform linear reciprocating motion and to which the locking cover is coupled.

Meanwhile, the GIS gas recovery port locking device according to the present invention may further include a sensor unit that detects the position of the lock cover.

Meanwhile, the GIS gas recovery port locking device according to the present invention further includes a lamp that irradiates light, and the lamp can be operated while the lock cover covers the bolt.

As described above, according to the GIS gas recovery port locking device according to the present invention, recovery of gas in the live line section can be prevented by preventing the bolt that opens the gas recovery port from turning with respect to the gas recovery port for the live line section. It works.

Figure 1 is a perspective view illustrating a GIS gas recovery port locking device according to an embodiment of the present invention.
Figure 2 is a plan view of Figure 1.
Figure 3 is a perspective view to explain the internal structure of the main body of the GIS gas recovery port locking device according to an embodiment of the present invention.
Figure 4 is a top view of Figure 3.
Figure 5 is a diagram for explaining a state in which the rotation of the bolt is restricted in the GIS gas recovery port locking device according to an embodiment of the present invention.
Figure 6 is a photograph showing the state in which the GIS gas recovery port locking device according to an embodiment of the present invention is applied.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be interpreted as including all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

In describing the present invention, terms such as first and second may be used to describe various components, but the components may not be limited by the terms. The above terms are solely for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention.

The term “and/or” may include any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it means that it may be directly connected to or connected to that other component, but that other components may also exist in between. It can be understood. On the other hand, when a component is referred to as being “directly connected” or “directly connected” to another component, it can be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions may include plural expressions, unless the context clearly indicates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and one or more other features It can be understood that it does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries can be interpreted as having meanings consistent with the meanings they have in the context of related technologies, and unless clearly defined in this application, are interpreted as having an ideal or excessively formal meaning. It may not work.

In addition, the following examples are provided to provide a more complete explanation to those with average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

Figure 1 shows a perspective view for explaining a GIS gas recovery port locking device according to an embodiment of the present invention, Figure 2 shows a plan view of Figure 1, and Figure 3 shows a GIS gas recovery port locking device according to an embodiment of the present invention. A perspective view is shown to explain the internal structure of the main body in the GIS gas recovery port locking device, FIG. 4 shows a plan view of FIG. 3, and FIG. 5 shows a GIS gas recovery port locking device according to an embodiment of the present invention. A drawing is shown to explain the state in which the rotation of the bolt is restricted, and Figure 6 shows a photograph showing the state in which the GIS gas recovery port locking device according to an embodiment of the present invention is applied.

The GIS gas recovery port locking device 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6 as follows.

The GIS gas recovery port locking device (1) according to an embodiment of the present invention includes a main body (10), a bolt (20), a locking cover (30), a driving unit (40), a sensor unit (50), a lamp (60), and Includes a control unit 70.

The main body 10 constitutes the exterior of the GIS gas recovery port locking device 1 and can cover the gas recovery port 2. That is, the main body 10 can block the gas recovery port 2 to prevent gas from being recovered.

The main body 10 includes a base portion 11, a motor receiving portion 12, and a movement guide portion 13.

The base portion 11 is formed in a flat shape and may be arranged to cover the entire surface of the gas recovery port 2. For example, the base portion 11 may be formed in the shape of a square plate. At this time, the base portion 11 can cover at least a portion of the gas recovery port 2 to prevent the gas recovery port 2 from being exposed to the outside.

The motor accommodation unit 12 may protrude from the base unit 11 in a vertical direction and may be formed to accommodate the motor 41, the lamp 60, and the control unit 70 therein. That is, the motor accommodation unit 12 may be in the form of a wall protruding from the base unit 11, and may form a space therein that can accommodate the drive unit 40, the lamp 60, and the control unit 70. .

The movement guide unit 13 may protrude from the base unit 11 in a vertical direction and may be formed to accommodate the moving body 43 and the sensor unit 50 therein. That is, the movement guide unit 13 may be in the form of a wall protruding from the base unit 11, and the mobile body 43 may be accommodated therein so as to be capable of reciprocating movement, and sensor units may be installed at both ends of the movement area of the mobile body 43. (50) is acceptable.

Meanwhile, the inner space of the motor accommodating part 12 and the inner space of the movement guide part 13 may be formed to communicate with each other. For example, the inner space of the motor accommodating part 12 and the inner space of the movement guide part 13 may be formed as a whole in a T shape.

The bolt 20 can couple the main body 10 and the gas recovery port 2. For example, the bolt 20 may include an upper bolt 21 and a lower bolt 22. At this time, the upper bolt 21 and the lower bolt 22 may pass through the base portion 11 and be coupled to the gas recovery port 2.

Meanwhile, the bolt 20 may be disposed between the locking cover 30 and the main body 10. Accordingly, the locking cover 30 may be disposed in front of the bolt 20, and the locking cover 30 may block the bolt 20 to prevent the bolt 20 from being tightened or loosened.

Here, when the worker loosens the bolt 20 and separates the main body 10 and the gas recovery port 2, the gas recovery port 2 is exposed to the outside and the worker can recover the gas by combining a hose (not shown). there is.

On the other hand, when the worker tightens the bolt 20 to couple the main body 10 and the gas recovery port 2, the hole in the gas recovery port 2 is blocked, making gas recovery impossible.

Meanwhile, when the GIS gas recovery port locking device 1 is coupled to the gas recovery port 2, the upper bolt 21 may be disposed higher than the lower bolt 22. With this configuration, the movement of only one lock cover 30 can prevent the plurality of bolts 22.

The locking cover 30 may be disposed on the main body 10 to be capable of linear reciprocating movement. Specifically, the locking cover 30 is coupled to the moving body 43 and can be linearly moved back and forth together with the moving body 43. For example, the lock cover 30 may reciprocate linearly within a predetermined distance range in the left and right directions according to the operation of the motor 41.

At this time, the locking cover 30 can be moved to a position where it can cover the front of the bolt 20. And, it can be moved to a range that does not overlap with the motor receiving portion 12. That is, the locking cover 30 can be moved in the left and right directions along the movement guide unit 13 and within the range of the movement guide unit 13.

Based on the state in which the GIS gas recovery port locking device (1) is coupled to the gas recovery port (2), the locking cover (30) has a predetermined width and is formed along the vertical direction, with the vertical end of the locking cover (30) may be formed in a bent shape toward the gas recovery port (2). With this configuration, the locking cover 30 blocks the upper and lower spaces of the bolt 20, which has the effect of preventing the operator from arbitrarily tightening or loosening the bolt 20.

The locking cover 30 may be coupled to the moving body 43 through a member such as a screw. Accordingly, the locking cover 30 can be linearly moved back and forth together with the moving body 43.

The driving unit 40 can move the locking cover. Specifically, the driving unit 40 includes a motor 41, a gear unit 42, and a moving body 43.

The motor 41 can generate rotational force using electrical energy. The motor 41 may provide power to move the lock cover 30. Here, as the motor 41, various types of known motors may be applied, and detailed description will be omitted. However, it is preferable that the motor 41 can change the direction of rotation. That is, the motor 41 may be capable of rotating in both directions.

The gear unit 42 is connected to the motor 41 and can transmit the power of the motor 41 to the moving body 43. The gear unit 42 may include a driving gear connected to the shaft of the motor 41 and a driven gear that meshes with the driving gear to rotate and moves the moving body 43. At this time, a part of the driven gear may be formed in the form of a worm gear, and a screw thread may be formed inside the moving body 43. Accordingly, when the motor 41 operates and the driven gear of the gear unit 42 rotates, the moving body 43 can be moved linearly along the screw thread.

The moving body 43 may be coupled to the gear unit 42 to make a linear reciprocating motion, and a locking cover may be coupled thereto. For example, the mobile body 43 may be in the form of a block with a predetermined volume, and a locking cover 30 may be coupled to the front. At this time, the gear unit 42 may be coupled to the moving body 43 through penetration. Additionally, a screw thread is formed inside the moving body 43 so that it can be coupled to the gear portion 42 in the form of a worm gear.

The sensor unit 50 can detect the position of the lock cover.

The sensor unit 50 includes a first sensor 51 and a second sensor 52. At this time, the first sensor 51 and the second sensor 52 may be disposed on both sides of the movement guide unit 13 in the left and right directions, respectively. In particular, the first sensor 51 may be disposed between the upper bolt 21 and the lower bolt 22. And, the second sensor 52 may be disposed at a location where the motor accommodation unit 12 and the movement guide unit 13 are connected.

The first sensor 51 and the second sensor 52 may contact the locking cover 30 and detect the position of the locking cover 30. For example, the first sensor 51 and the second sensor 52 may be micro switches. Therefore, when the locking cover 30 is moved to a position covering the bolt 20, the locking cover 30 and the first sensor 51 can come into contact, and the first sensor 51 is connected to the locking cover 30. A signal indicating contact can be transmitted to the control unit 70. Additionally, when the locking cover 30 and the second sensor 52 come into contact, the second sensor 52 may transmit a signal indicating that it has made contact with the locking cover 30 to the control unit 70.

The lamp 60 can irradiate light. For example, lamp 60 may be an LED lamp. The lamp 60 irradiates light to allow the worker to recognize that the locking cover 30 covers the bolt 20.

The control unit 70 may be composed of a printed circuit board and elements mounted on the printed circuit board. The control unit 70 may be accommodated in the motor accommodation unit 12. The control unit 70 may be signally connected to a gas insulated switchgear (GIS). As an example, the signal may be an electrical signal. The control unit 70 may receive information about the input status of the grounding disconnector of the busbar from the gas insulated switchgear (GIS).

The control unit 70 can control the motor 41. The control unit 70 may operate the motor 41 to move the lock cover 30. At this time, the control unit 70 can change the rotation direction of the motor 41.

The control unit 70 may be signally connected to the first sensor 51 and the second sensor 52. The control unit 70 may receive a signal about the position of the lock cover 30 from the first sensor 51 and the second sensor 52.

The control unit 70 can control the lamp 60. The control unit 70 can control the lamp 60 on/off.

The control of the GIS gas recovery port locking device 1 by the control unit 70 is explained as follows.

When a grounding disconnector for work is applied to one of the two busbars, the busbar in question is in a diagonal state, and only the busbar on the other side is in a live state. At this time, the input signal of the ground disconnector is received by the control unit 70 of the gas recovery port locking device attached to the live wire bus side disconnector, and the control unit 70 operates the motor 41, so that the lock cover 30 is bolted ( The locking cover 30 is moved linearly so that it is placed on the front of 20). Accordingly, the bolt 20 is disposed between the locking cover 30 and the main body 10, and the bolt 20 cannot be loosened. Accordingly, the main body 10 can remain coupled to the GIS gas recovery port 2.

Meanwhile, when the locking cover 30 is placed on the front of the bolt 20, the locking cover 30 comes into contact with the first sensor 51, and the first sensor 51 transmits a signal to the control unit 70. do. And when the control unit 70 receives a signal from the first sensor 51, it stops operating the motor 41 and operates the lamp 60.

Accordingly, since the gas recovery port 2 of the live wire bus is covered by the locking cover 30, the bolt 20 cannot be loosened (see Fig. 5). Additionally, in this state, the lamp 60 lights up, so the operator can recognize that the 'gas recovery is prohibited' state.

Meanwhile, when work on the diagonal busbar is completed and the ground disconnector is opened, the signal can be received by the control unit 70. At this time, the control unit 70 can turn off the lamp 60 and operate the motor 41 to move the lock cover 30 in a direction away from the bolt 20. And, when the lock cover 30 comes into contact with the second sensor 52, the second sensor 52 transmits a signal to the control unit 70, and the control unit 70 receives the signal from the second sensor 52. After receiving, the operation of the motor 41 can be terminated.

Therefore, the gas recovery port 2 of the diagonal busbar is open so that the bolt 20 can be loosened, and the worker can easily unscrew the bolt 20 and recover the gas through the gas recovery port 2.

Although the present invention has been described in detail through specific examples, this is for detailed explanation of the present invention, and the present invention is not limited thereto, and the present invention is intended to be understood by those skilled in the art within the technical spirit of the present invention. It is clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

1: GIS gas recovery port lock
10: body
20: bolt
30: lock cover
40: driving part
50: sensor unit
60: lamp
70: control unit

Claims (5)

A body covering the gas recovery port;
Bolts connecting the main body and the gas recovery port; and
a locking cover disposed on the main body to enable linear reciprocating movement;
Including,
GIS gas recovery port locking device, characterized in that the bolt is disposed between the locking cover and the main body.
According to paragraph 1,
When the bolt is disposed between the locking cover and the main body, the GIS gas recovery port locking device is characterized in that the main body remains coupled to the GIS gas recovery port.
According to paragraph 1,
a driving unit that moves the locking cover;
It further includes,
The driving unit,
a motor that provides power;
a gear unit rotated according to the operation of the motor; and
A moving body coupled to the gear portion to perform linear reciprocating motion and to which the locking cover is coupled;
GIS gas recovery port lock including.
According to paragraph 1,
A sensor unit that detects the position of the lock cover;
GIS gas recovery port locking device further comprising.
According to paragraph 1,
A lamp that irradiates light;
It further includes,
The lamp is,
GIS gas recovery port locking device, characterized in that it is operated while the locking cover covers the bolt.