KR20050023621A - cylindrical ground pipe buried deeply - Google Patents

Abstract

PURPOSE: A deeply buried cylindrical ground pipe is provided to form selectively the position of a discharge hole and to form a protrusion/depression member without an additional process. CONSTITUTION: One or more middle member(100) comprises the first pipe(110). One or more first combining members(112) are formed to a side wall of the first pipe. The first protrusion bolt(120) has the first discharge hole(122). An end of the first protrusion bolt is combined to the first combining member. The first closing nut(130) is combined detachably to the first protrusion bolt. A top member(200) covers the upper opening portion of the first pipe. A bottom member(300) comprise the second pipe(310). An end of the second pipe is closed and the other end of thereof is combined with the first pipe. One or more second combining members(312) is installed to a side wall of the second pipe. The second protrusion bolt(320) has the second discharge hole. An end of the second protrusion bolt is combined to the second combining member. The second closing nut(330) is combined detachably to the second protrusion bolt.

Description

Cylindrical ground pipe buried deeply}

The present invention effectively distributes the high-voltage current caused by external factors such as ground fault or lightning strike in the power system to the ground to prevent various electronic devices such as communication device or radar device from being damaged by reverse flashover. It relates to the ground rod of the grounding device.

Lightning strikes are a phenomenon in which huge electric energy generated by energizing air flow, such as static electricity, is discharged to the surface of the earth. These lightning strikes have tremendous destructive power, so when installing various facilities, be sure to equip the grounding device to discharge the current quickly to the ground when lightning strikes to prevent damage caused by lightning strikes. At this time, since the earth is like a capacitor having a large capacity, even if a current such as a lightning strike can be sufficiently absorbed, a phenomenon such as a potential rise does not occur.

Grounding is generally buried in the ground, and the current applied to the grounding electrode includes a surge such as an external lightning strike, a fault current caused by a failure of a power system and an electric device, and an unbalanced current caused by three-phase unbalance. This current needs to be quickly radiated to ground through the ground electrode.

The grounding device generally used is composed of a structure in which grounding poles are connected to the ground by connecting a grounding pole to a building and a steel structure that may be damaged by lightning strikes.In particular, a lightning rod is installed at the top of the building and the lightning rod is connected by a copper wire. Grounding structure is most widely used. At this time, the end of the buried copper wire is connected to a mesh ground network, a radial ground network or a simple copper ground rod is distributed in a wide area, it is configured to increase the discharge effect to the ground.

Also, in recent years, a grounding apparatus capable of injecting a conductive electrolyte into the ground rod has been developed so that the high-voltage current applied to the ground electrode can be discharged to the ground more effectively and more quickly.

Hereinafter, with reference to the accompanying drawings will be described a ground rod that can be added and adjusted the electrolyte.

Figure 1a is a perspective view of a conventional ground rod that can be added to the electrolyte.

As shown in FIG. 1A, a conventional ground rod includes a plurality of discharge holes 12 perforated at a side thereof, and a lower lower end thereof with a copper pipe 10 clogged with a bottom plate 14 and an upper end of the copper pipe 10. It consists of a cover 20 which is coupled in a fitting manner to the opening.

The reason why the copper pipe 10 is selected as the grounding copper pipe is to allow the input of salt and water, which play an role of an electrolyte therein. At this time, the discharge hole 12 is formed in the size of 3 ~ 4 mm in diameter to serve as the discharge hole so that the water drawn into the inside of the copper pipe 10 can be discharged to the outside, the upper end of the copper pipe 10 Plug 20 is coupled to block foreign matter or rainwater flows into the inside of the copper pipe 10, and serves to enable additional input of the electrolyte into the copper pipe (10).

In addition, the copper twisted pair 30 made of a highly conductive material is coupled to the side of the copper pipe 10, and an external current is transmitted to the copper pipe 10 through the tilted twisted pair 30.

1B is a cross-sectional view of a conventional ground rod.

When the ground rod is installed on the ground, as shown in FIG. 1B, the ground rod insertion hole 42 having a pit shape of a depth that can be buried by standing the copper pipe 10 in the soil 40 is excavated, and then the ground rod insertion hole 42 is disposed. Insert the copper pipe (10) upright in the vertical direction.

When the insertion of the copper pipe 10 is completed, the ground rod insertion port 42 around the copper pipe 10 is filled with the ground reducing soil 50 mixed with soil and ground reducing material 50: 50, and the inside of the copper pipe 10 After filling the electrolyte 60, the upper opening of the copper pipe 10 is covered with a cover 20.

The electrolyte 60 filled in the copper pipe 10 flows into the surrounding soil through the discharge hole 12 formed at the side of the copper pipe 10, and the ground reduction soil 50 has improved conductivity. Since the ground reduced soil 50 having improved conductivity acts to lower the resistivity of the original soil, the grounding effect of discharging the high pressure current to the ground through the copper pipe 10 and the ground reduced soil 50 is reduced. Is maximized.

However, if the ground rods having the structure described above are used, when the ground rods are installed at the point where the groundwater layer or the cave layer is present, the electrolyte 60 is mixed with the groundwater and lost or flowed into the cave layer, thereby improving the conductivity of the soil 40. The effect of improvement is lowered. In order to solve such a problem, when the discharge hole 12 is formed only at a position that is not in contact with the groundwater layer or the cave layer, there is a disadvantage in that the copper pipe 10 must be made to order according to the characteristics of the soil.

In addition, when the cover 20 is bonded to the copper pipe 10 for a long time, since an oxidation action occurs between the copper pipe 10 and the cover 20 and is fixed, the inside of the copper pipe 10 is refilled for electrolyte refilling. When removing the cover 20 to open, there is a disadvantage that the cover 20 must be broken.

In addition, in order to increase the effect that the high-voltage current applied to the copper pipe 10 is transmitted to the ground, there is a case in which a sharp protrusion shaped iron is formed on the outer wall of the copper pipe 10. Since the manufacturing process of the need to be added, the disadvantage arises that the production is cumbersome.

The present invention has been made to solve the above problems, it is possible to selectively form the position of the discharge hole, due to the oxidation does not occur the sticking phenomenon of the cover, without adding a separate manufacturing process to the iron The purpose is to provide a grounding rod that can be formed.

Cylindrical core ground rod according to the present invention for achieving the above object,

A first pipe having one or more first coupling holes formed on the side wall surface, a first protrusion bolt having a first discharge hole and one end thereof coupled to the first coupling hole, and a structure detachable from the first protrusion bolt At least one stop having a first sealing nut; An upper end coupled to cover the upper end of the first pipe; One end is sealed and the other end is coupled to the first pipe and the second pipe having one or more second coupling holes on the side wall surface, the second discharge hole is formed and one end is coupled to the second coupling hole It comprises a second protruding bolt, and a lower end including a second sealing nut coupled to the structure detachable to the second protruding bolt.

The first discharge hole is formed to penetrate through the center of the first protruding bolt, and the first protruding bolt is coupled to the coupler so that one end thereof protrudes outward of the first pipe.

In addition, the first sealing nut is coupled to the structure detachable to the first protruding bolt to seal the first discharge hole exposed to the outside of the first pipe, the second sealing nut is also exposed to the outside of the second pipe It is coupled to the removable structure to the second protruding bolt to seal the discharge hole.

In this case, the first pipe and the second pipe are preferably formed with the same diameter to facilitate mutual compatibility.

The first pipe and the second pipe are detachable, so that the first male thread is formed at the end of one pipe and the female thread is formed at the end of the other pipe.

In addition, when it is difficult to form a thread in the first pipe and the second pipe, the interruption portion is formed in a shape that can be joined to one end of the lower end of the first pipe and the other end of the pipe-shaped first screw is formed Coupling and a second coupling having one end is formed in a shape that can be coupled to the upper end of the first pipe and the second pipe, and the other end is formed with a second coupling screw that can be screwed with the first coupling screw Equipped.

In addition, the upper end portion is formed in a pipe shape that can be coupled to the upper end of the first pipe and one or more lower fastening protrusions having lower insertion holes formed therein are provided on the outer surface, and a shape capable of covering the upper end surface of the lower cover. When the upper cover of the lower cover is formed in the upper cover is formed on the outer surface and the upper fastening protrusion is formed in the position corresponding to the lower insertion hole, the upper cover and the lower insertion hole is inserted into the lower insertion hole It comprises a coupling pin for fastening the cover and the top cover.

In addition, at least one bottom discharge hole penetrating inside and outside is formed at a lower end of the second pipe so that the electrolyte filled into the second pipe may be drawn downward.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the cylindrical core ground rod according to the present invention.

Figure 2a is an exploded perspective view of a cylindrical shim ground rod according to the present invention.

As illustrated in FIG. 2A, the cylindrical shim ground rod according to the present invention includes one or more stop parts 100 formed in a pipe shape that can be continuously coupled in the longitudinal direction, and an upper end part coupled to cover the top opening of the stop part 100. 200 and the upper end is configured to include a lower end 300 that is coupled to the lower end of the stop 100.

The stop part 100 is formed of a metal material in the shape of a pipe, and at the same time, a first pipe 110 having four first coupling holes 112 formed therein and penetrating the inside and the outside thereof, and one end thereof being the first end. It is formed in a shape that can be coupled to the lower end of the pipe 110 and the other end of the pipe-shaped first coupling 140 is formed with a first coupling screw 142, one end is the first pipe 110 And a second coupling having a second coupling screw 152 having a female thread shape that can be coupled to an upper end of the second pipe 310 and that can be screwed to the first coupling screw 142 at the other end thereof. It is configured to include.

Although the first pipe 110 is coupled to the upper end of the first coupling 140 in the present embodiment, the coupling method between the first pipe 110 and the first coupling 140 is not limited thereto. It can be applied in a variety of ways, such as riveting or screwing. In addition, when sealing between the first pipe 110 and the first coupling 140 is required, the welding is performed using a welding or bond bonding method. The change of the coupling method may be applied to the coupling between the second pipe 310 and the second coupling 150.

The first coupling 140 and the second coupling 150 are coupled by the first coupling screw 142 and the second coupling screw 152 by screwing. At this time, the first coupling screw 142 is formed in the male screw shape and the second coupling screw 152 is formed in the female screw shape in the present embodiment, on the contrary, the second coupling screw 152 is formed in the male screw shape and the first screw The coupling screw 142 may be formed in a female screw shape to couple the first coupling 140 and the second coupling 150.

The first coupling hole 112 is coupled to the first protrusion bolt 120 of the column shape having a first discharge hole 122 penetrating through the central axis so as to protrude to the outside of the first pipe 110, The first sealing nut 130 is coupled to the end of the first protruding bolt 120 protruding to the outside of the first pipe 110 to seal the first discharge hole 122. The first protruding bolt 120 serves as an outlet of the electrolyte filled into the inside of the first pipe 110, and at the same time, serves as a ground part in which a current applied to the ground rod is grounded to the ground.

The coupling structure of the first protruding bolt 120 and the first sealing nut 130 will be described with reference to the separate drawings below.

In addition, in the present exemplary embodiment, four first coupling holes 112 are formed in one first pipe 110 such that the angle between the first coupling holes 112 is 90 °. The number and location of the first coupler 112 may be variously changed and applied.

The upper part 200 is broadly divided into a lower cover 210 formed in a pipe shape that can be coupled to the upper end of the first pipe 110 and an upper cover 220 formed in a shape that can cover the upper surface of the lower cover 210. Are distinguished.

On the outer surfaces of the lower cover 210 and the upper cover 220, a pair of lower fastening protrusions 212 having a lower insertion hole 214 formed therein and a pair of upper inserting holes 224 formed therein The upper fastening protrusions 222 are respectively provided, and the coupling pin 230 is inserted into the upper insertion hole 224 and the lower insertion hole 214 to fasten the lower cover 210 and the upper cover 220 further. It is provided.

In this case, the upper fastening protrusion 222 and the lower fastening protrusion 212 are coupled to a position where the upper insertion hole 224 and the lower insertion hole 214 coincide so that the coupling pin 230 can be easily inserted. .

When the upper cover 220 is coupled to the lower cover 210 by using the coupling pin 230 as shown in Figure 2a, the upper cover 220 and the lower cover 210 are fitted to the area in contact with each other It becomes narrower than the conventional ground rod cover which is coupled in a manner. Therefore, even though the upper cover 220 and the lower cover 210 are kept in a long-term bond state, adhesion does not occur due to oxidation, and thus, electrolyte refilling is facilitated.

The lower end 300 is formed in a pipe shape in which the lower end is sealed so that the upper end is coupled to the lower end of the first pipe 110 and has one or more second coupling holes 312 penetrating inside and outside on the sidewall surface. A second protruding bolt having a second pipe 310 and a column shape having a second discharge hole formed to penetrate the central axis and having one end coupled to the coupler to protrude outward of the second pipe 310 ( 320 and a second sealing nut 330 coupled to the second protruding bolt 320 to seal the second discharge hole exposed to the outside of the second pipe 310.

The lower end 300 of the second pipe 310 has a narrow cone shape so that the cylindrical seam ground rod according to the present invention can be more easily inserted when the earth is buried in the ground, and the radiation amount of current at the lower end can be increased. It is preferably formed in a shape. In addition, the lower end of the second pipe 310 penetrates the inside and outside of the lower end 300 so that the electrolyte filled in the second pipe 310 can be drawn out downward of the second pipe 310. A ball 314 is further formed.

In addition, in the present embodiment, the two stop portions 100 are connected between the upper portion 200 and the lower portion 300, but the buried depth of the ground rod that is increased or decreased by the size of the current to be grounded or the design value of the ground resistance requirement. The number of stops 100 coupled accordingly may be variously changed.

Figure 2b shows the coupling shape of the protruding bolt and the sealing nut.

As shown in FIG. 2B, the first protruding bolt 120 applied to the present invention includes a first discharge hole 122 penetrating the inside in the longitudinal direction and a first male thread 124 on the outer surface thereof. It is formed in a cylindrical shape, one end is coupled to the first coupler 112, the other end is screwed to the first sealing nut 130. In addition, a first female thread (not shown) having a structure that can be coupled to the first male thread 124 is formed in the first sealing nut 130 at a portion corresponding to the first male thread 124.

In addition, a spanner coupling jaw 126 having a polygonal cross section is further formed at the center portion of the first protruding bolt 120 so that a coupling tool such as a spanner can be used when screwing.

At this time, the first protruding bolt 120, although the thread is necessarily formed at the end of the side coupled to the first sealing nut 130 in order to be coupled to the first sealing nut 130 in a removable structure, 1 The end of the side that is coupled to the coupler 112 can be omitted thread formation. However, as shown in FIG. 2B, when threads of the same size are formed at both ends of the first protruding bolt 120, the side coupled to the first pipe 110 and the first sealing nut 130 are coupled to each other. Since it is not limited to the direction of the coupling to be separated side, there is an advantage that the assembly is more convenient and there are various conveniences in the production of the product.

The coupling shape and coupling structure of the second protruding bolt 320 and the second sealing nut 330, and the coupling shape and coupling structure of the first protrusion bolt 120 and the first sealing nut 130 shown in Figure 2b Since the same, detailed description thereof will be omitted.

Figure 3 sequentially shows the process of embedding the cylindrical shim ground rod in accordance with the present invention.

When embedding the cylindrical shim ground rod in the ground, as shown in FIG. 3a, the ground rod insertion hole 410 having a depth capable of burying the ground rod in the soil 400 is dug, and as shown in FIG. 3b, the top cover protrudes to the top of the ground surface. After inserting the ground rod into the ground rod insertion hole 410 so as to connect the copper twisted pair 30 for applying an external current to one side of the interruption portion 100. At this time, when there is no groundwater layer in the position to bury the ground rod as shown in Figure 3a, after separating the first sealing nut 130, the ground rod is inserted into the ground rod insertion hole 410.

When the ground rod is drawn in, the ground rod insertion hole 410 around the ground rod is filled with the ground reducing soil 500 as shown in FIG. 3C, and the top cover is opened to open the first pipe 110 and the second pipe 310. After filling the electrolyte into the interior of the first pipe 110 and the second pipe 310, the upper cover 220 is coupled as shown in FIG. 3D so that rainwater or foreign matter does not enter.

Electrolyte filled in the first pipe 110 and the second pipe 310 flows into the surrounding ground reduction soil 500 through the first discharge hole 122 and the second discharge hole, and thus the ground reduction soil ( 500) to improve conductivity. Since the ground reduced soil having improved conductivity acts to lower the resistivity of the original soil, the grounding effect of discharging the high-voltage current to the ground through the ground reduced soil 500 is maximized.

4 is a view showing a shape in which a cylindrical shim ground rod according to the present invention is embedded at a position where groundwater flows.

As shown in FIG. 4, when the groundwater layer 600 is located at the point where the ground rod is to be embedded, the first protruding bolt 120 at the portion meeting the groundwater layer 600 is sealed by the first sealing nut 130.

Therefore, since the electrolyte filled in the first pipe 110 is not lost by the groundwater layer 600 and the entire amount is introduced into the ground reduction soil 500, the grounding effect improved by the electrolyte can be maintained.

FIG. 5A is a result data of a lightning simulation conducted using a cylindrical shim ground rod according to the present invention, and FIG. 5B is a result data of a lightning simulation performed using a conventional ground rod.

5A and 5B are graphs showing the change in voltage of the ground rod over time when a high voltage current is applied to the fireproof base grounded with a hard copper wire, and the vertical axis represents the magnitude of the voltage generated in the ground rod. The horizontal axis represents the time for the experiment to proceed.

5a and 5b, it can be seen that the voltage remaining time in the ground rod is shorter when using the cylindrical shim ground rod according to the present invention than when using the conventional ground rod. This indicates that when using the cylindrical shim ground rod according to the present invention, the high-voltage current applied to the ground rod is grounded to the earth more quickly. Therefore, it can be seen that the cylindrical shim ground rod according to the present invention is superior to the conventional ground rod. .

As mentioned above, although this invention was demonstrated in detail using the preferable embodiment, the scope of the present invention is not limited to a specific embodiment and should be interpreted by the attached claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

By using the cylindrical shim ground rod according to the present invention, the user can selectively form the position of the discharge hole, so that the ground rod can be used in common irrespective of the soil characteristics to embed the ground rod, and the sticking phenomenon of the cover due to oxidation Since it does not occur, it is easy to maintain and manage, and there is an advantage in that the iron can be formed without adding a separate manufacturing process.

Figure 1a is a perspective view of a conventional ground rod that can be added to the electrolyte.

1B is a cross-sectional view of a conventional ground rod.

Figure 2a is an exploded perspective view of a cylindrical shim ground rod according to the present invention.

Figure 2b shows the coupling shape of the protruding bolt and the sealing nut.

Figure 3 sequentially shows the process of embedding the cylindrical shim ground rod in accordance with the present invention.

4 is a view showing a shape in which a cylindrical shim ground rod according to the present invention is embedded at a position where groundwater flows.

Figure 5a is a result of the lightning simulation simulated using a cylindrical shim ground rod according to the present invention.

Fig. 5B is a result data of a lightning simulation conducted using a conventional ground rod.

<Description of the symbols for the main parts of the drawings>

100: interruption unit 110: first pipe

112: first coupler 120: first protruding bolt

122: first discharge hole 124: first male thread

126: spanner coupling jaw 130: first sealing nut

140: first coupling 142: first coupling screw

150: second coupling 152: second coupling screw

200: upper portion 210: lower cover

212: lower fastening protrusion 214: lower insertion hole

220: top cover 222: top fastening protrusion

224: upper insertion hole 230: coupling pin

300: lower portion 310: second pipe

312: second coupler 314: lower discharge hole

320: second protruding bolt 330: second sealing nut

400: soil 410: ground rod insertion hole

500: reduced earth soil 600: hard copper stranded wire

Claims (6)

The first pipe 110 having one or more first coupling holes 112 formed on the side wall surface, the first discharge hole 122 is formed, and the first protruding bolt is coupled to the first coupling hole 112 at one end thereof. At least one stop part (100) having a first sealing nut (130) coupled to and detachable from the first protruding bolt (120); An upper end 200 coupled to cover an upper end opening of the first pipe 110; One end is sealed and the other end is coupled to the first pipe 110 and the second pipe 310 having one or more second coupling holes 312 on the side wall, and the second discharge hole is formed and one side A lower end 300 including a second protruding bolt 320 coupled to the second coupler 312 and a second sealing nut 330 detachably coupled to the second protruding bolt 320. ); Cylindrical core ground rod, characterized in that comprising a. The method of claim 1, The first pipe 110 and the second pipe 310, Formed with the same diameter; The stop unit 100, One end is formed in a shape that can be coupled to the lower end of the first pipe 110, and the other end of the pipe-like first coupling 140, the first coupling screw 142 is formed, One end is formed in a shape that can be coupled to the upper end of the first pipe 110 and the second pipe 310, the other end of the second coupling screw of the structure capable of screwing the first coupling screw 142 Cylindrical shim ground rod, characterized in that it further comprises a second coupling (150) is formed (152). The method according to claim 1 or 2, The upper end 200, A lower cover 210 formed in a pipe shape that can be coupled to an upper end of the first pipe 110 and having one or more lower fastening protrusions 212 formed on an outer side thereof with a lower insertion hole 214 formed therein; The upper insertion hole 224 is formed at a position corresponding to the lower insertion hole 214 when the upper surface of the lower cover 210 is formed to cover the upper surface of the lower cover 210. An upper cover 220 having an upper fastening protrusion 222 formed on an outer surface thereof; A coupling pin 230 inserted into the upper insertion hole 224 and the lower insertion hole 214 to fasten the lower cover 210 and the upper cover 220 to each other; Cylindrical core ground rod, characterized in that comprising a. The method according to claim 1 or 2, The second pipe 310 is, Cylindrical shim ground rod, characterized in that the lower portion 300 is formed with one or more lower discharge hole 314 penetrating the inner, outer. The method according to claim 1 or 2, The first protruding bolt 120, A first male thread acid 124 is formed at a portion engaged with the first sealing nut 130; The first sealing nut 130, Cylindrical deep ground rod, characterized in that the first female thread structure of the structure that can be combined with the first male thread 124 is formed in a portion corresponding to the first male thread 124. The method according to claim 1 or 2, The second protruding bolt 320 is, A second male thread acid is formed at a portion engaged with the second sealing nut 330; The second sealing nut 330, Cylindrical deep ground rod, characterized in that the second female thread of the structure that can be combined with the second male thread 124 is formed in a portion corresponding to the second male thread 124.