JPS6350779Y2 - - Google Patents
Info
- Publication number
- JPS6350779Y2 JPS6350779Y2 JP1982116785U JP11678582U JPS6350779Y2 JP S6350779 Y2 JPS6350779 Y2 JP S6350779Y2 JP 1982116785 U JP1982116785 U JP 1982116785U JP 11678582 U JP11678582 U JP 11678582U JP S6350779 Y2 JPS6350779 Y2 JP S6350779Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- rod
- grounding
- pipe
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Prevention Of Electric Corrosion (AREA)
Description
【考案の詳細な説明】
本考案は接地装置の改良に関するものである。
接地棒を埋設した土壌が強電解質である場合、接
地棒が電気化学的に腐食され、接地抵抗が経時的
に増大するといつた不合理がある。[Detailed Description of the Invention] The present invention relates to an improvement of a grounding device.
If the soil in which the grounding rod is buried is a strong electrolyte, the grounding rod will be electrochemically corroded and the grounding resistance will increase over time.
このため、本出願人は埋設接地棒の近傍に孔あ
き管を埋設し、該孔あき管に上記接地棒に対する
犠牲陽極を挿脱可能なように収納し、犠牲陽極が
ある程度消耗すればこれを交換することを既に提
案ずみである（実願昭54−153724号）。 For this reason, the present applicant buried a perforated pipe near the buried grounding rod, and housed the sacrificial anode for the grounding rod in the perforated pipe so that it could be inserted and removed. It has already been proposed to replace it (Utility Application No. 153724, 1983).
しかしながら、この装置においては接地棒と犠
牲陽極との間に孔あきプラスチツク管等の電気的
に比較的高抵抗の物質が存在しているので、接地
棒に対する防食効果（Galvanic Protection）の
完全さは望めず、他方、孔あき管を良導電性孔あ
き金属管とする場合は、この孔あき管の腐食が問
題となる。 However, in this device, there is a material with relatively high electrical resistance, such as a perforated plastic tube, between the ground rod and the sacrificial anode, so the galvanic protection effect on the ground rod is not complete. On the other hand, if the perforated tube is a highly conductive perforated metal tube, corrosion of the perforated tube becomes a problem.
本考案に係る接地装置は上述の点に鑑みて案出
されたものであり、マンホール壁部の穿孔に埋設
されるコンクリート管、アスベスト管または孔あ
きプラスチツク管の何れか一種からなる透水性パ
イプの内部に、接地棒と犠牲陽極棒とを、これら
両棒間をスペーサにより所定間隔離隔し且つ両棒
をリード線により電気的に接続した状態で上記パ
イプの長手方向に列設収納してなり、前記透水性
パイプ内には含水状態を保持させるための捕水材
を充填すると共にその頭部を前記マンホール壁部
の穿孔部分に設けた穿孔閉塞用止水板により外気
より密閉したことを特徴とする構成である。 The grounding device according to the present invention was devised in view of the above-mentioned points, and is a permeable pipe made of one of concrete pipes, asbestos pipes, or perforated plastic pipes, which is buried in a hole in a manhole wall. A grounding rod and a sacrificial anode rod are housed inside the pipe in a row in the longitudinal direction of the pipe with a predetermined spacing between the two rods by a spacer and electrically connected to each other by a lead wire, The permeable pipe is filled with a water-trapping material for maintaining a water-containing state, and its head is sealed from the outside air by a water stop plate for closing the perforation provided in the perforation part of the manhole wall. The configuration is as follows.
以下、図面により本考案を説明する。 The present invention will be explained below with reference to the drawings.
図において、１は既設マンホール、２はマンホ
ール壁１１に設けた穿孔である。３はこの穿孔２
より土壌中に打込んだ透水性パイプ（コンクリー
ト管、アスベスト管または孔あきプラスチツク管
の何れか一種よりなる）であり、その先端には必
要に応じて打込みを容易にするための円錐形コン
クリートブロツク３１が取付けてある。４は高透
水性パイプ３内に収納した接地棒（銅棒）、５は
接地棒４に対する犠牲陽極棒（マグネシウム陽極
棒）であり、これらはスペーサ６、…によつて一
定の間隔で離隔されている。７はリード線であ
り、このリード線７により接地棒４と犠牲陽極棒
５とが電気的に接続されている。８は高透水性パ
イプ３内に充填した捕水材例えばベントナイトで
ある。１０は上記穿孔２を閉塞せる止水板であ
り、パツキング１０１を介しボルト１０２、…に
よつてマンホール壁１１に取付けられている。上
記リード線７は止水板１０より引き出されてい
る。 In the figure, 1 is an existing manhole, and 2 is a perforation made in the manhole wall 11. 3 is this perforation 2
A permeable pipe (made of one of concrete pipes, asbestos pipes, or perforated plastic pipes) that is driven into the soil, with a conical concrete block at the end to facilitate driving if necessary. 31 is installed. 4 is a grounding rod (copper rod) housed in the highly permeable pipe 3, 5 is a sacrificial anode rod (magnesium anode rod) for the grounding rod 4, and these are separated at a constant interval by spacers 6,... ing. 7 is a lead wire, and the ground rod 4 and the sacrificial anode rod 5 are electrically connected by this lead wire 7. 8 is a water-catching material filled in the highly permeable pipe 3, such as bentonite. Reference numeral 10 denotes a water stop plate that closes the perforation 2, and is attached to the manhole wall 11 through packing 101 with bolts 102, . . . . The lead wire 7 is drawn out from the water stop plate 10.
本考案に係る接地装置は上述した通りの構成で
あり、接地棒を収納せる透水性パイプ例えばコン
クリートパイプ内に捕水材をマンホール内の外気
より密閉されるように充填しているから、透水性
パイプ壁内の含水が抜けきるのを防止し得、該パ
イプ壁を常に含水状態の低抵抗に保ち得る。従つ
て、接地棒がコンクリートパイプ内に存在するに
もかかわらず、所定の低接地抵抗となし得る。ま
た、犠牲陽極棒を透水性パイプ内に接地棒と共に
これら両棒間にスペーサを介して所定間隔離隔さ
せ且つ両棒をリード線により電気的に接続した状
態にて列設収納してあるから、犠牲陽極棒による
接地棒の防食を完全に行うことができ、土壌が強
電解質であつても上記の低抵抗を安全に維持でき
る。 The grounding device according to the present invention has the above-mentioned configuration, and the water-catching material is filled in a water-permeable pipe, such as a concrete pipe, in which the grounding rod is housed, so as to be sealed from the outside air in the manhole. It is possible to prevent water contained in the pipe wall from escaping, and it is possible to keep the pipe wall always in a water-containing state with low resistance. Therefore, a predetermined low grounding resistance can be achieved despite the presence of the grounding rod within the concrete pipe. In addition, the sacrificial anode rods and the ground rod are housed in the water-permeable pipe in a row with a predetermined distance between the two rods via a spacer, and the two rods are electrically connected by a lead wire. The sacrificial anode rod can completely protect the ground rod from corrosion, and the above-mentioned low resistance can be safely maintained even if the soil is a strong electrolyte.
図面は本考案に係る接地装置を示す説明図であ
る。
図において、３は透水性パイプ、４は接地棒、
５は犠牲陽極棒、８は捕水材である。
The drawing is an explanatory diagram showing a grounding device according to the present invention. In the figure, 3 is a permeable pipe, 4 is a grounding rod,
5 is a sacrificial anode rod, and 8 is a water-trapping material.
Claims (1)
ト管、アスベスト管または孔あきプラスチツク管
の何れか一種からなる透水性パイプの内部に、接
地棒と犠牲陽極棒とを、これら両棒間をスペーサ
により所定間隔離隔し且つ両棒をリード線により
電気的に接続した状態で上記パイプの長手方向に
列設収納してなり、前記透水性パイプ内には含水
状態を保持させるための捕水材を充填すると共に
その頭部を前記マンホール壁部の穿孔部分に設け
た穿孔閉塞用止水板により外気より密閉したこと
を特徴とする接地装置。 A grounding rod and a sacrificial anode rod are placed inside a permeable pipe made of concrete, asbestos, or perforated plastic pipe, which is buried in a hole in the manhole wall, with a spacer separating the two rods at a predetermined distance. The pipes are arranged and housed in a longitudinal direction with both rods separated and electrically connected by lead wires, and the water-permeable pipe is filled with a water-trapping material to maintain a water-containing state. A grounding device characterized in that its head is sealed from the outside air by a water stop plate for closing the hole provided in the hole in the manhole wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11678582U JPS5921578U (en) | 1982-07-31 | 1982-07-31 | earthing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11678582U JPS5921578U (en) | 1982-07-31 | 1982-07-31 | earthing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5921578U JPS5921578U (en) | 1984-02-09 |
| JPS6350779Y2 true JPS6350779Y2 (en) | 1988-12-27 |
Family
ID=30269086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11678582U Granted JPS5921578U (en) | 1982-07-31 | 1982-07-31 | earthing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921578U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62135224A (en) * | 1985-12-04 | 1987-06-18 | 株式会社テージーケー | Motor actuator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4978151A (en) * | 1972-12-01 | 1974-07-27 |
-
1982
- 1982-07-31 JP JP11678582U patent/JPS5921578U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4978151A (en) * | 1972-12-01 | 1974-07-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5921578U (en) | 1984-02-09 |
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