CN200994004Y

CN200994004Y - Cement base nonmetallic earthing electrode plate

Info

Publication number: CN200994004Y
Application number: CN 200620167443
Authority: CN
Inventors: 蔡庆宗
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-13
Filing date: 2006-12-13
Publication date: 2007-12-19
Anticipated expiration: 2016-12-13

Abstract

The utility model discloses a cement-base nonmetallic grounding electrode plate, and belongs to the electrical grounding device and component field. The utility model mainly solves the easy erosion, high maintenance cost and short service life of metallic grounding electrode plates, and has the advantages of a low resistance, a good conducting performance and a high tensile strength. The utility model comprises a conducting cement body (1) that contains graphite and has protruding strips (5) on the surface, and a stainless steel joint (2) having a flush blind hole (3) with an internal thread. The internal upper end of the joint (2) is welded with a reinforcing metal strip (4). The utility model has the advantages of a low resistance, a good conducting performance, an extremely high resistance to pressure and tensile strength; stable connection, a large contact area with the earth, a solid connection, quick discharging, and water absorbability; an extremely long service life, good resistance to large current and transient large current, especially suitable for the occasions of large-current safety grounding and lightning-proof grounding; strong adaptability to the environment; and high reliability, easy maintenance, easy production, low cost and easy construction.

Description

The nonmetal grounding electrode plate of a kind of cement based

Technical field

The utility model belongs to the electrical earth device part field, relates to the nonmetal grounding electrode plate of a kind of cement based.

Background technology

In the prior art, the grounding electrode plate in the electric and lightning arrester mostly is metal sheet type greatly and directly is embedded in the soil layer, and its weak point is, it is fast that earth electrode easily is corroded, resistivity rises, and useful life is short, and the counterpoises transformation is frequent, the maintenance cost height; Other has a kind of nonmetallic chemical glue gel material to mix the nonmetal grounding electrode plate that materials such as conductivity graphite are made, its weak point is: the resistivity height is 0.05 to 0.5 Ω m, and compression strength is low, have only about 1mpa, low to environmental suitability, too dry, moist, or under the higher environment of temperature, its electric conductivity declines to a great extent, and break easily, so reliability is low, useful life is short.

Summary of the invention

The technical problem that solves:

Provide a kind of cement based nonmetal grounding electrode plate, can overcome the deficiencies in the prior art, the low-resistivity, high conductivity, the high strength that had both had the wire ground electrode plate, be not corroded again, strong to environmental suitability, reliability is high, easy care, useful life with overlength, easily to make, cost is low.

The technical scheme that adopts:

The nonmetal grounding electrode plate of a kind of cement based has conducting concrete main body and the electrode nipple of mixing graphite, it is characterized in that: be welded with the reinforcement metal bar on the buried end in the conducting concrete main body of electrode nipple.

Beneficial effect:

The conducting concrete main body of cement based is embedded in has natural adaptability in the soil layer, conducting concrete main body of the present invention be adopt that application number is 200510064446.1, publication number is CN1073167A, and " a kind of preparation method who mixes the conducting concrete of graphite " that be authorized to disclosed scheme make, and electrode nipple is to adopt the disclosed scheme of Chinese patent CN2814699Y, has good conductivity and high compression strength; Electrode nipple is firm, connects, conducts electricity reliable; And the reinforcement metal bar more helps discharge and improve rupture strength; Lip-deep strip bulge can make it fully to contact with soil layer, and strengthens contact area, in conjunction with closely knit, quicken discharge, and have water absorption, therefore, imbed soil layer after its resistivity can further descend, conductivity and intensity can further improve; Reliability height, easy care, easily make, cost is low, easily construction, the useful life with overlength; Anti-big electric current and instantaneous large-current impact property are good, are particularly useful for the occasion of big electric current safety ground, lightning protection earthing, and extremely strong to environmental suitability.

Description of drawings

Fig. 1, general structure schematic diagram;

The stereoscopic-state schematic diagram of Fig. 2, reinforcement metal bar 4;

Fig. 3, by A shown in Figure 1 to view;

Fig. 4, by A-A cutaway view shown in Figure 3;

Fig. 5, by B shown in Figure 1 to view;

Fig. 6, reinforcement metal bar 4 are the staggered form distribution schematic diagram;

Fig. 7, application state schematic diagram;

Embodiment

Further auspiciously in conjunction with the accompanying drawings add explanation;

Shown in Fig. 1,2,4,6 and 7, buried electrode nipple 2 in conducting concrete main body 1, be the stainless steel cylinder of band blind screw hole 3, be welded with " fried dough twist " shape reinforcement metal bar 4 that is the staggered form distribution on the one end, this bonding jumper is buried in the conducting concrete main body 1.Bonding jumper 4 can quicken discharge and improve intensity.

Shown in Fig. 1,3,4 and 5, have strip bulge 5 on the surface of conducting concrete main body 1, in order to the contact area of increasing,, improve electric conductivity with abundant, closely knit the combining of soil layer with soil layer; Select one or all have strip bulge 5 on the bottom surface of conducting concrete main body 1, the end face, this projection is linear pattern or shaped form.

As shown in Figure 7, during application, grounding electrode plate is in place, install after, before burying, should encapsulate with the 8 pairs of external screws 6 of cement mortar and the position, connector lug 7 place of drawing that is locked thereof, to guarantee its reliability.

The concrete specification of conducting concrete main body 1 needs to set processing according to the specific requirement of its electric conductivity, required discharge.

The requirement of burying underground of grounding electrode plate is undertaken by corresponding electrical code.

Grounding electrode plate of the present invention, resistivity have only about 0.005 Ω m, and compression strength is about 20mpa.

Claims

1, the nonmetal grounding electrode plate of a kind of cement based has conducting concrete main body and the electrode nipple of mixing graphite, it is characterized in that: be welded with the reinforcement metal bar on the buried end in the conducting concrete main body of electrode nipple.

2, the nonmetal grounding electrode plate of a kind of cement based according to claim 1, it is characterized in that: buried electrode nipple (2) in conducting concrete main body (1), be the stainless steel cylinder of band blind screw hole (3), be welded with " fried dough twist " shape reinforcement metal bar (4) that is the staggered form distribution on the one end.

3, the nonmetal grounding electrode plate of a kind of cement based according to claim 1 and 2, it is characterized in that: reinforcement metal bar (4) is buried in the conducting concrete main body (1).

4, the nonmetal grounding electrode plate of a kind of cement based according to claim 1 and 2 is characterized in that: have strip bulge (5) on the surface of conducting concrete main body (1).

5, the nonmetal grounding electrode plate of a kind of cement based according to claim 3 is characterized in that: have strip bulge (5) on the surface of conducting concrete main body (1).

6, the nonmetal grounding electrode plate of a kind of cement based according to claim 4 is characterized in that: select one or all have a strip bulge (5) on the bottom surface of conducting concrete main body (1), the end face.

7, the nonmetal grounding electrode plate of a kind of cement based according to claim 5 is characterized in that: select one or all have a strip bulge (5) on the bottom surface of conducting concrete main body (1), the end face.