KR101966282B1 - Cylinder band for inspection of 154 kv gas insulated switchgear mechanisms - Google Patents

Abstract

The present invention relates to a cylinder band (10) for inspecting a 154 KV gas insulated switchgear (GIS) mechanism that separates the cylinder band while the piston (4) is inserted into the cylinder (1), which is fixed to surround a piston ring (6) installed on the outer surface of a piston (4) inserted into a cylinder (1) to prevent separation of the piston ring (6) before the piston (4) is inserted. According to the present invention, the cylinder band (10) comprises: a band main body (100) formed to be divided into first and second main bodies (110, 120) each having pushing projections (111, 121) erected on contact surfaces (112, 122) adhering on the upper surface of a piston ring (6) to be caught by an end of an inlet of a cylinder (1); and a hanging part (300) for fastening the first and second main bodies (110, 120) to fix the band main body (100) in a shape of surrounding the piston ring (6).

Description

154 KV GIS Mechanism Inspection Cylinder Band {CYLINDER BAND FOR INSPECTION OF 154 KV GAS INSULATED SWITCHGEAR MECHANISMS}

The present invention relates to a cylinder band for checking 154 KV GIS (Gas Insulated Switchgear) mechanisms.

Gas Insulated Switchgear (GIS) is a device that safely protects power system electrical equipment by opening and closing the line even in abnormal conditions such as grounding, short circuit, etc., as well as opening and closing transmission and substation lines in a normal state. Disconnecting Switch, Lightning Arrester, Main Bus, and Feeder Bus are built in grounded metal tanks and are insulated with SF6 gas or nitrogen gas, It is an advanced switching device with advantages such as miniaturization of substation, improvement of safety and reliability, ease of operation and maintenance, and harmony with environment.

The gas circuit breaker (GCB) is a main protective device that not only opens and closes a normal line but also protects the power system by blocking the fault current even in abnormal conditions such as line ground fault, short circuit and load accident.

 Such a circuit breaker moves a cylinder rod connected to a cylinder to a trip position by a driving force generated by an actuator such as an electric spring, which is charged by hydraulic pressure, pneumatic pressure or a motor which is a driving device of the circuit breaker, When the insulated SOG gas is compressed by the movement of the cylinder rod, compressed high-pressure SOG gas is injected into the arc to cool down the fault current to interrupt the current.

In order to operate the circuit breaker normally, a mechanism for compressing the SOG gas is required, and the mechanism needs periodic inspection for normal operation.

The inspection of the mechanism of the gas insulated switchgear (GIS, hereinafter collectively referred to as GIS) is completed by opening the cylinder cover for closing the cylinder, and sealing the cylinder cover again after the inspection. At this time, the piston is provided with an elastic piston ring on the outer surface for preventing a gap with the cylinder. This is as shown in Figs.

FIG. 1 is a side view showing a conventional GIS (Gas Insulated Switchgear) mechanism, FIG. 2 is a perspective view showing a state in which the cylinder cover of FIG. 1 is opened, and FIG. 3 is a side view of FIG.

1 to 3, a conventional 154 KV gas insulated switchgear (GIS) mechanism includes a cylinder 1 for compressing SOHO gas, a piston 4 driven inside the cylinder 1, A cylinder link 3 for connecting the piston 4 and the cylinder cover 2, a coupling means 5 for fixing the cylinder cover to the cylinder, And a piston ring (6) for preventing a gap between the inner surface of the piston ring (1).

The mechanism of the gas insulated switchgear (GIS) is checked by opening the cylinder cover 2 to replace the cylinder and piston and / or replacing the piston ring, As shown in FIG. At this time, the piston (4) is moved forward and backward by the sector link (3) at the front surface of the cylinder cover (2) with the piston ring installed, and is introduced into the cylinder.

Here, the piston ring 6 is not fixed to the end face of the piston 4 by a separate fixture, but is attached to the end face of the piston 4 in a shape in which the end face is surrounded and bonded and / or fixed It is not state.

Therefore, the piston ring 6 needs to be very careful to the operator since the piston ring 6 often breaks off during the process of pulling the piston 4 into the cylinder 1 after inspection or replacement.

That is, the conventional gas insulated switchgear (GIS) mechanism for 154 KV has a problem that the time is long in the process of assembling after inspection due to disengagement of the piston ring 6 in the inspection process, and fatigue of the worker is increased.

Korean Patent Publication No. 10-2009-0121589 (2009.11.26)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a gas insulated switchgear (GIS) And a cylinder band for inspecting a 154 KV GIS (Gas Insulated Switchgear) mechanism capable of preventing the piston ring from departing during the process.

Therefore, the present invention may include the following embodiments in order to achieve the above object.

In the embodiment according to the present invention, the piston ring fixed to the outer surface of the piston that is drawn into the inside of the cylinder is fixed so as to surround the piston ring to prevent the piston ring from being separated until the piston is drawn in, and the 154KV GIS Gas Insulated Switchgear A cylinder band for checking mechanisms is divided into a first body and a second body each having a jaw tilted upright on a contact surface which is in close contact with an upper surface of a piston ring so as to be caught by an inlet- And a hook body for fastening the band body to the shape of wrapping the piston ring by fastening the first body and the second body to each other. The band body is made of a metal or plastic sliding sheet A 154 KV GIS mechanism checking cylinder band may be included.

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Accordingly, it is possible to prevent the piston ring from coming off when the piston is drawn into the cylinder during the inspection of the 154KV GIS (Gas Insulated Switchgear) mechanism, thereby reducing the time and the fatigue of the operator during the reassembling process after checking the mechanism So that the working efficiency can be improved.

1 is a side view showing a conventional GIS (Gas Insulated Switchgear) mechanism.
2 is a perspective view showing a state in which the cylinder cover of Fig. 1 is opened.
Figure 3 is a side view of Figure 2;
4 is a perspective view showing a cylinder band for checking a 154 KV gas insulated switchgear (GIS) mechanism according to the present invention.
5 is a front perspective view showing the cylinder band of Fig.
6 is a rear perspective view showing the cylinder band of Fig.
Fig. 7 is a perspective view showing the engagement state of the cylinder bands. Fig.
8 is an enlarged side view of the fixing structure of the cylinder bands.
9 is a side view showing a process of adjusting the length of a cylinder band.
10 is a perspective view showing a fixed state of the cylinder bands.
11 is a perspective view for explaining the process of departing the cylinder bands.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Also, the terms " part, "" means, "," module, "and" device ", etc. described in the specification mean units for processing at least one function or operation. .

It is to be understood that the term "and / or" throughout the specification includes all possible combinations from one or more related items. For example, the meaning of "first item, second item and / or third item" may be presented from two or more of the first, second or third items as well as the first, second or third item It means a combination of all the items that can be.

Also, the name GIS (Gas Insulated Switchgear) described throughout the specification refers to the same apparatus as the abbreviated name of "Gas Insulated Switchgear" which is the English name of the gas insulated switchgear.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a cylinder band for inspecting a 154 KV gas insulated switchgear mechanism according to the present invention will be described with reference to the accompanying drawings.

4 is a perspective view showing a cylinder band for checking a 154 KV GIS (Gas Insulated Switchgear) mechanism according to the present invention, FIG. 5 is a front perspective view showing the cylinder band of FIG. 4, and FIG. 6 is a view showing the cylinder band of FIG. FIG.

Here, the cylinder 1, the cylinder cover 2, the sector link 3, and the piston 4, which are the same as the conventional components, are denoted by the same reference numerals.

4 to 6, a cylinder band 10 for inspecting a 154 KV gas insulated switchgear mechanism according to the present invention comprises a band body 100 divided and formed of an elastic material, A slider sheet 200 and 200 'made of a metal material for reducing frictional force with the cylinder ring 6 and a hook part 300 for fastening the divided band bodies 100 to each other, And a length adjusting unit 400 for adjusting the length.

The band body 100 is divided into a first body 110 and a second body 120, which are made of plastic, fiber, or metal.

The first body 110 and the second body 120 are connected by the hook portion 300. The second body 120 is connected to the first body 110 by a hook 300 on one side and the first body 110 and the second body 110 are connected to each other by a length adjuster 400 on the opposite side. .

The first main body 110 and the second main body 120 are provided with contact faces 112 and 122 forming a ring-shaped face so as to be in close contact with the upper face of the piston ring 6, And the jaws 111 and 121 that are erected at the side end portions.

The contact surfaces 112 and 122 are provided on the outer surface of the cylinder ring 6 in a curved surface so as to coincide with the outer surface of the cylinder ring 6. Here, the sliding faces 200 and 200 'may be provided so as to reduce frictional force with the outer surface of the cylinder ring 6 on the lower face of the contact faces 112 and 122.

The jaws 111 and 121 are erected so as to be engaged with the front side end portions of the contact surfaces 112 and 122, that is, the inlet side end portion of the cylinder 1. [ To this end, the jaws 111 and 121 have a height elevated such that the entire diameter of the piston 4 to which the cylinder band 10 is attached has a larger diameter than the inlet-side diameter of the cylinder 1. Since the cylinder jaws 111 and 121 are engaged with the inlet side end of the cylinder 1 when the cylinder ring to which the cylinder bands 10 are coupled is drawn into the cylinder 1, So as to be released from the cylinder ring 6.

The slide sheets 200 and 200 'are made of a material capable of reducing the frictional force such that the band bodies 100 are pushed by the jaws 111 and 121 on the front side of the cylinder 1, ≪ / RTI > For example, the sliding sheets 200 and 200 'may be formed of a thin sheet of aluminum, copper, or copper, or may be made of a plastic material. In addition, the sliding sheets 200 and 200 'may be adhered to the lower surfaces of the first body 110 and the second body 120.

That is, in the present invention, the cylinder band 10 prevents the piston ring 6 from being disengaged in the course of the piston 4 being pulled into the cylinder 1, while the piston ring 6 is inserted into the cylinder 1 And is detached from the piston ring (6) in the process.

The hook portion 300 will be described with reference to Figs. FIG. 7 is a perspective view showing a state of engagement of the cylinder bands.

4 to 7, the hooking unit 300 includes a hooking housing 310 rotatably fixed up and down, a plurality of fitting jaws 360 mounted on the contact surfaces 112 and 122 of the main body, A connecting ring 330 connecting between the fixing hook 320 and the hooking housing 310 and a connecting hook 330 connecting the hooking housing 310 to the hinge 360 for vertically rotatably fixing the hooking housing 310, Means 350, and a securing groove 340 for securing the hanger housing 310.

The hook housing 310 forms a downward side 314 on both sides of an upper surface 311 extending from the second body 120 to the first body 110 side. The hooking housing 310 includes a pressing plate 313 extending upward from the upper surface 311 to the rear side and a connecting rod 312 fixed between the both side surfaces and fastened to the fixing groove 340.

The pressure plate 313 is formed so as to extend upward from the upper surface 311 toward the rear side. This allows the operator to more easily engage and disengage the first body 110 and the second body 120 by operating the hooking housing 310. The operation of the pressure plate 313 will be described later in connection with the fixing groove 340 and the connecting rod 312.

The fastening rod 312 is fastened to the open upper surface of the fixing groove 340 as a rod connected and fixed between the both side surfaces 314. That is, when the worker presses using the pressure plate 313, it is fastened to the fixing groove 340, and when the pressure plate 313 is upwardly moved, it is released from the fixing groove 340.

The fixing groove 340 is erected on the contact surface 122 of the second main body 120 so that the upper surface thereof is opened. Here, the open upper surface of the fixing groove 340 has a smaller gap than the inner side, and when the pressing rod 312 is pressed against the pressing plate 313, it is tightly coupled.

When the pressure plate 313 is rotated upward, the fastening rod 312 is detached from the fixing groove 340 after being tightly fastened to the fixing groove 340.

The hinge unit 350 includes a hinge rod 351 hinged to both side surfaces 314 of the hooking housing 310 and a support body 352 for supporting the hinge rod 351. The hinge unit 350 includes a hooking housing 310, To be rotatable up and down.

The connection hook 330 connects the fixing hook 320 and the hooking housing 310. For this purpose, the linking ring 330 is formed with a "⊂" shape in which the distal end connected to the fixing ring 320 is horizontally extended and the rear end is bent at the horizontally elongated distal end and fixed to both side surfaces 314 of the hooking housing 310 Respectively.

The fixing ring 320 has a pair of side portions 321 whose rear end is fixed to the connecting ring 330 so as to be rotatable about the front end thereof and a pair of side portions 321 which are horizontally connected and / (322).

The pair of side portions 321 are plate members extending in an upright and unidirectional direction and are rotatably fixed to the ends of the linking hooks 330 at the rear side.

The loop bar 322 is horizontally connected and fixed at the tip of the pair of side portions 321. [ Here, the hook rod 322 is fitted in any one of a plurality of fitting jaws 360 sequentially aligned on the upper surfaces of the contact surfaces 112 and 122 of the first main body 110.

A plurality of fitting jaws 360 are sequentially arranged on the contact surface 112 of the first main body 110. Here, the lower end of the fitting jaw 360 is opened so that the hook rod 322 can be inserted and hooked. That is, as the number of fitting jaws 360 is sequentially aligned, the fixing ring 320 can be selectively inserted according to the diameter of the piston 4.

The length adjuster 400 will be described with reference to FIGS. 6 and 8. FIG. 8 is an enlarged side view of the fixed structure of the cylinder bands.

6 and 8, the length adjusting unit 400 includes a first supporting unit 410 formed of a plate material erected at one end of the second body 120, A second support means 420 made of a plate material erected at an end of the first body 110, a control rod 430 connected to the first support means 410 and the second support means 420, And adjusting means 440 for moving the pressing member 430 in the anteroposterior direction.

The first support means 410 includes a first upright plate 411 that is erected at the end of the second body 120 and a second upright plate 411 that extends from both ends of the second upright plate 421 toward the second support means 420 And includes a pair of first side plates 412.

The first upright plate 411 is formed with communication holes (not numbered) through which the adjusting rods 430 communicate and the pair of first side plates 412 are connected to the communication holes (Not shown) to guide the adjusting rod 430 connected to the second supporting means 420 side.

The second supporting means 420 extends from the end of the first body 110 to the first supporting means 410 at the both ends of the second upright plate 421 and the second upright plate 421 in an upright view And a pair of second side plates 422 for fixing the adjustment rods 430.

The second upright plate 421 is erected at an end where the fitting jaws 360 are not provided (an end opposite to the second main body 120 provided with the second supporting means 420).

The second side plate 422 extends from both side ends of the second upright plate 421 toward the first supporting means 410 to fix the adjusting rod 430 connected therebetween.

The adjusting rod 430 includes a head 431 protruding from one side of the first upright plate 411, a bar body 432 extending from the head 431, and a second side plate 422 at the end of the bar body 432. [ And a horizontal bar 433 which is fixed to the base plate 431.

The head 431 protrudes from one surface of the first upright plate 411 to prevent the adjustment means 440 from coming off.

The rod 432 is formed to extend in one direction between the head 431 and the horizontal bar 433 and a screw thread is formed on the outer surface to move the adjusting means 440 in the forward and backward directions.

The horizontal bar 433 extends horizontally at the end of the bar 432 and is fixed to the second side plate 422. The horizontal bars 433 are fixed to the second side plates 422 at both ends.

The adjusting means 440 presses the first upright plate 411 in the forward and backward directions while being rotated, for example, on the outer surface of the bar body 432.

That is, the adjusting means 440 is rotatably fixed to the outer surface of the rod 432 below the head 431 on one surface of the first upright plate 411 as a bolt, for example, In the front-rear direction.

Therefore, as shown in FIG. 8 (b), when the first upright plate 411 is rotated in one direction, the adjusting means may reduce the interval between the first and second main bodies 110 and 120, 8A, the gap between the first upright plate 411 and the second upright plate 421 can be enlarged by being rotated in the opposite direction.

That is, the present invention can be universally used for pistons 4 having different diameters because the operator can adjust the entire diameter of the cylinder bands 10 by rotating the adjusting means according to the diameter of the piston 4 .

The present invention includes the above-described configuration. Hereinafter, the operation and effect of the present invention achieved through the above-described configuration will be described with reference to FIGS. 9 to 11. FIG. 9 to 11 do not show the sector link 3 and the cylinder cover 2 in order to explain the operation of the cylinder band 10 according to the present invention. 9 to 11 correspond to a 154 KV Gas Insulated Switchgear (GIS) mechanism provided with a sector link 3 and a cylinder cover 2, which is shown briefly to explain the main features of the present invention .

9 is a side view showing a process of adjusting the length of a cylinder band.

9, the operator installs the cylinder bands 10 on the outer surface of the piston 4 so as to enclose the piston rings 6 provided on the outer surface of the piston 4. [ At this time, the worker adjusts the diameter of the cylinder band 10 by using the length adjuster 400 so as to be equal to the diameter of the piston 4.

For example, the operator rotates the adjusting means 440 in one direction to reduce the distance between the first upright plate 411 and the second upright plate 421 so that the first main body 110 and the second main body 120 Thereby reducing the overall length of the cylinder bands 10 included. Or the operator may rotate the adjusting means in the opposite direction to enlarge the gap between the first upright plate 411 and the second upright plate 421 so that the cylinder bands including the first body 110 and the second body 120 10) Extend the entire length.

Thereafter, the operator tightens the band body 100 so as to surround the outer surface of the piston ring 6. At this time, the first body 110 and the second body 120 are not connected due to the state before the hook 300 is fastened. Therefore, the cylinder bands 10 are installed in such a manner as to surround the outer surface of the piston 4 provided with the piston ring 6 as shown in Fig.

10 is a perspective view showing a fixed state of the cylinder bands.

Referring to FIG. 10, the cylinder band 10 is fixed by the hanger 300 in a state in which the outer surface of the piston 4 provided with the piston ring 6 is surrounded as shown in FIG. The worker first inserts the fixing hook 320 into one of the fitting jaws 360 of the first body 110 and presses the pressing plate 313 extending from the rear of the hooking housing 310.

The hook housing 310 is moved backward by the rotation of the hinge means 350 when the pressure is applied to the pressing plate 313 located at the rear side so that the hooking housing 310 pulls the fixing hook 320 fitted in the fitting jaw 360 . The fastening rod 312 of the hook housing 310 is inserted into the fixing groove 340. Therefore, the cylinder band 10 is fixed to the outer surface of the piston ring 6.

When the installation of the cylinder bands 10 is completed in this way, the operator uses the sector link 3 to pull the piston 4 into the cylinder 1.

11 is a perspective view for explaining the process of departing the cylinder bands.

Referring to Fig. 11, the piston 4 is drawn inward through the inlet of the cylinder 1. At this time, the jaws 111 and 121 of the cylinder band 10 are in an upright state on the contact surfaces 112 and 122 and protrude to the outside of the piston 4. Therefore, the jaws 111 and 121 are hooked to the outer end of the inlet of the cylinder 1 when the piston 4 is drawn into the cylinder 1.

The cylinder band 10 is pushed backward by the force applied to the jaws 111 and 121 when the piston 4 is moved forward and is drawn into the cylinder 1. [ Therefore, the piston 4 is completely drawn into the cylinder 1, and the cylinder band 10 is pushed backward and released from the outer surface of the piston 4.

Here, the cylinder bands 10 are prevented from friction with the piston rings 6 as the sliding sheets 200 and 200 'are attached to the lower surface of the band body 100, and can be easily separated from the front by the force applied from the front.

In addition, the piston ring 6 can be drawn into the cylinder 1 without being released from the state where the piston ring 6 is provided on the outer surface of the piston 4 by the cylinder band 10.

That is, the cylinder band 10 according to the present invention is installed on the outer surface of the piston 4 in a state where the piston ring 6 provided on the outer surface of the piston 4 is not fixed by the fixing jig, A situation of peeling off the outer surface of the piston 4 during the reassembling process after the inspection and / or replacement can be prevented.

Therefore, the present invention is very easy to assemble after checking the 154KV GIS (Gas Insulated Switchgear) mechanism, thereby reducing the fatigue of the operator and shortening the working time.

It will be apparent to those skilled in the art that various modifications and equivalent arrangements may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: Cylinder 2: Cylinder cover
3: Sector link 4: Piston
5: engaging means 6: piston ring
10: cylinder band 100: band body
110: first main body 111, 121:
112, 122: contact surface 120: second body
200, 200 ': sliding sheet 300:
310: Hook housing 311: Upper surface
312: fastening rod 313: pressure plate
314: Side 320: Retaining ring
321: side portion 322:
330: connecting collar 340: fixing groove
350: hinge means 351: hinge rod
352: Support body 360:
400: length adjusting portion 410: first supporting means
411: first upright plate 412: first side plate
420: second supporting means 421: second upright plate
422: second side plate 430: adjusting rod
431: Head 432: Loop
433: horizontal bar 440: adjusting means

Claims (7)

The piston ring 4 is fixed so as to surround the piston ring 6 provided on the outer surface of the piston 4 drawn into the inside of the cylinder 1 to prevent the piston ring 6 from being separated until the piston 4 is drawn in, In a cylinder band (10) for inspecting a 154 KV GIS (Gas Insulated Switchgear) mechanism which is withdrawn from the piston ring (6) while being drawn into the cylinder (1)
The cylinder bands (10)
A first main body 110 and a second main body 110 each having a pair of jaws 111 and 121 which are erected on the contact surfaces 112 and 122 which are in close contact with the upper surface of the piston ring 6 and which are engaged with the inlet- A band body 100 divided and formed as a main body 120; And
And a hook unit 300 which fastens the first body 110 and the second body 120 to fix the band body 100 in a shape to wrap the piston ring 6,
The band body 100
And a sliding sheet (200, 200 ') made of a metal or a plastic material is attached to a bottom surface of the piston ring (6) which is in close contact with the upper surface of the piston ring (6).
[3] The hanger according to claim 1,
A hanger housing (310) hinged to the second body (120);
A fitting jaw 360 in which a plurality of pieces are sequentially aligned on the contact surface 112 of the first body 110;
A hooking ring 330 connected to the hooking housing 310 to be rotatable up and down; And
And a retaining ring (320) connected to the front of the coupling ring (330) so as to be rotatable up and down, and having a locking bar (322) fitted in the fitting jaw (360) at the tip.
The hanger according to claim 2,
And a fixing groove 340 whose upper surface is opened to be fixed to the second main body 120 so as to insert a connecting rod 312 which is connected between both side surfaces 314 of the hook housing 310. The 154 KV GIS mechanism check Cylinder bands for use.
The hanger of claim 2, wherein the hanger housing (310)
And a pressure plate (313) extending upwardly from the upper surface (311) to provide a 154 KV GIS mechanism checking cylinder band.
The cylinder head according to claim 1, wherein the cylinder band (10)
A first upright plate 411 erected at one end of the first body 110 and a first side plate 412 extending from both sides of the first upright plate 411 to the second body 120 side. 1 support means (410);
A second upright plate 421 erected at a position opposite to the first supporting means 410 in the second main body 120 and a second upright plate 421 extending from the both sides of the second upright plate 421 toward the first main body 110 side. Second support means 420 having two side plates 422;
A control rod 430 fixed to the first upright plate 411 and the second upright plate 421 by being connected to each other; And
The first upright plate 411 is rotated about the outer surface of the adjusting rod 430 between the head 431 of the adjusting rod 430 and the first upright plate 411 to move the first upright plate 411 in the forward and backward direction, And adjusting means (440) for adjusting the length between the second upright plate (421) and the second upright plate (421).
[5] The apparatus of claim 5,
And a horizontal bar 433 horizontally extending from the end of the rod 432 extending in one direction from the head 431 and fixed to the second side plate 422. The cylinder bands for checking the 154 KV GIS mechanism.
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