CN209896271U - Resistance-reducing grounding grid device for hydropower station - Google Patents

Abstract

The utility model discloses a resistance-reducing grounding grid device for a hydropower station, which comprises a leading-out wire, an electrode unit, a connecting wire and a discharge ring which are connected in sequence; the circumference of the discharge ring is also provided with a grounding rod; the electrode unit comprises an antifreeze metal electrode unit, an anticorrosion filler metal electrode unit and a resistance reducing filler metal electrode unit which are sequentially connected by a connecting wire; the grounding rod comprises a connecting rod and a pointed rod; one end of the connecting rod is fixedly connected with the discharge ring; the other end of the connecting rod is movably connected with the pointed rod; the pointed end of the pointed rod is provided with a section of spiral part; the surface of the pointed rod is also provided with a scale mark; the pointed rod is movably provided with a split type limiting chuck; the utility model discloses the technical scheme who takes has solved because the geological conditions difference in different areas leads to the earial drainage earth bar to be difficult to the male problem to and earial drainage annular earth bar depth of insertion is difficult to adjust the problem that the effect of hindering falls.

Description

Resistance-reducing grounding grid device for hydropower station

Technical Field

The utility model relates to a transmission of electricity technical field, concretely relates to power station is with falling resistance grounding grid device.

Background

The locations of the hydropower stations are many mountainous areas which are frequently generated by thunder; the hydropower station transmission line tower pole, the communication base station and the communication iron tower in the mountainous area all need to reach the grounding resistance values required by relevant specifications, so that the hydropower station transmission line tower pole, the communication base station and the communication iron tower are not influenced by lightning disasters to the greatest extent; the current solution mainly includes the measures of soil replacement, external leading of the grounding device, burying of the grounding module, and the adoption of an ion rod, etc., so that the grounding resistance is reduced to below a specified value. The existing commonly used grounding grid mainly comprises a leading-out wire, an electrode unit, a connecting wire, a current-discharging ring and a current-discharging grounding rod arranged below the current-discharging ring in sequence, wherein all the parts are flexibly connected, the whole structure is electrically conductive by electrons, and effective resistance reduction is realized in a limited area, so that a box can discharge fault current and lightning current greatly, and the normal operation and personal safety of power equipment are ensured. However, due to the fact that different regions have different geological conditions, the number of rocks and stones in some regions is large, and soil layers are hard, the leakage current grounding rod is difficult to insert, and due to the fact that the insertion depths of the leakage current grounding rod required in different soil conditions are different, the problem that the resistance reducing effect is affected due to the fact that the leakage current grounding rod is inaccurate and the insertion depths of the leakage current surrounding grounding rods are different due to the fact that the leakage current surrounding grounding rod is not uniform in the visual inspection mode or the marking mode in advance can occur at present.

Disclosure of Invention

An object of the utility model is to provide a power station is with falling and hinders grounding grid device solves because the geological conditions difference in different areas leads to the earial drainage earth bar to be difficult to the male problem to and earial drainage ring ground bar depth of insertion is difficult to the adjustment influence and falls the problem of hindering the effect.

In order to solve the technical problem, the utility model adopts the following technical scheme: a resistance-reducing grounding grid device for a hydropower station comprises a leading-out wire, an electrode unit, a connecting wire and a drainage ring which are sequentially connected; the circumference of the discharge ring is also provided with a grounding rod; the electrode unit comprises an antifreeze metal electrode unit, an anticorrosion filler metal electrode unit and a resistance reducing filler metal electrode unit which are sequentially connected by a connecting wire; the grounding rod comprises a connecting rod and a pointed rod; one end of the connecting rod is fixedly connected with the discharge ring; the other end of the connecting rod is movably connected with the pointed rod; the pointed end of the pointed rod is provided with a section of spiral part; the surface of the pointed rod is also provided with a scale mark; the pointed rod is movably provided with a split type limiting chuck;

further, the lower end of the connecting rod is in threaded connection with the upper end of the pointed rod;

furthermore, the limiting chuck comprises a first semicircular disc and a second semicircular disc; the first half disc and the second half disc are connected in a clamping mode;

further, arc-shaped grooves are formed in the opposite side walls of the first semicircular disc and the second semicircular disc; the arc-shaped grooves are butted to form a clamping groove for the pointed rod to pass through;

furthermore, the side wall of the first half disc is provided with a lug; the side wall of the second semicircular disc is provided with a clamping groove corresponding to the protruding block;

furthermore, a section of arc-shaped rib extends upwards from the edge of the upper surface of each of the first semicircular disc and the second semicircular disc;

the further technical proposal is that the lower surfaces of the first semicircular disc and the second semicircular disc are both provided with ground grabbing bulges.

Compared with the prior art, the beneficial effects of the utility model are one of following at least:

1. the anti-freezing agent metal electrode unit, the anti-corrosion filler metal electrode unit and the resistance-reducing filler metal electrode unit can be applied to complex geological soil environments around hydropower stations built in mountainous areas, and the application range of the grounding grid device is expanded;

2. the connecting rod of the grounding rod is used for connecting the pointed rod, and the helical blade arranged at one end of the pointed rod can improve the soil drilling capability and is convenient for inserting into soil with more rocks;

3. the pointed rod and the connecting rod are movably connected, so that the pointed rod and the connecting rod can be flexibly disassembled and assembled, transportation is facilitated, selective use is facilitated, and the length of the grounding rod is adjusted;

4. the pointed rods are provided with the scale marks for facilitating reading, the accuracy of the insertion depth is improved, the limiting chucks are clamped at positions indicated by the scale marks with the required depth, then the pointed ends of the pointed rods are inserted into soil, the drain rings are knocked downwards until the limiting chucks on each pointed rod move to the surface of the soil layer, knocking can be stopped, then the limiting chucks are disassembled and taken down from the pointed rods, the installation of the grounding rods is completed, the uniformity of the ground insertion depth of each grounding rod is improved through the limiting chucks, and the convenience of adjusting the ground insertion depth is improved;

5. the utility model discloses simple structure, simple installation have great popularization and practical value.

The utility model discloses a use method does: firstly, digging a groove at an installation point, and pouring a soil pretreatment agent into the groove; then uniformly laying composite backfill materials on the bottom of the groove and the wall of the gully; after the device is horizontally placed into the groove, the limiting chuck is clamped at the position indicated by the scale mark with the required depth, then the pointed end of each pointed rod is inserted into soil, the leakage ring is knocked downwards until the limiting chuck on each pointed rod is observed to move to the surface of a soil layer, knocking can be stopped, then the limiting chuck is detached and taken down from the pointed rod, and the grounding rod is installed; finally, the whole device is covered by the composite backfill material, and the clay is used for backfilling and tamping.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the ground rod.

Fig. 3 is a bottom view of the spacing chuck in a disassembled state.

Fig. 4 is a schematic structural diagram of the limiting chuck.

In the drawings: 1. an outgoing line; 2. an electrode unit; 3. a connecting wire; 4. a bleed ring; 5. a ground rod; 6. an antifreeze metal electrode power supply; 7. an anti-corrosive filler metal electrode unit; 8. a resistance-reducing filler metal electrode unit; 9. a connecting rod; 10. a tip bar; 11. a spiral portion; 12. scale marks; 13. a limiting chuck; 14. a first half disc; 141. a bump; 15. a second half-disk; 151. a card slot; 16. an arc-shaped slot; 17. arc-shaped ribs; 18. and (4) grabbing the ground protrusion.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1: as shown in fig. 1 to 4, a resistance-reducing grounding grid device for a hydropower station comprises an outgoing line 1, an electrode unit 2, a connecting line 3 and a leakage ring 4 which are connected in sequence; the circumference of the leakage ring 4 is also provided with a grounding rod 5; the electrode unit 2 comprises an antifreeze metal electrode unit 6, an anticorrosion filler metal electrode unit 7 and a resistance-reducing filler metal electrode unit 8 which are sequentially connected by a connecting wire 3; the grounding rod 5 comprises a connecting rod 9 and a pointed rod 10; one end of the connecting rod 9 is fixedly connected with the drainage ring 4; the other end of the connecting rod 9 is movably connected with the pointed rod 10; the pointed end of the pointed rod 10 is provided with a section of spiral part 11; the surface of the pointed rod 10 is also provided with a scale mark 12; the pointed rod 10 is movably provided with a split type limiting chuck 13. In this embodiment, each electrode unit 2 is a metal shell having a closed inner cavity, corresponding filler is filled in the shell, the filler is selected from conventional fillers, and the shell is further provided with a liquid outlet. The metal shell is also provided with a connector outside for connecting the connecting wire 3 or the outgoing wire 1, and the connecting modes are flexible connections.

The antifreeze metal electrode unit 2, the anticorrosion filler metal electrode unit 72 and the resistance-reducing filler metal electrode unit 8 can be applied to complex geological soil environments around hydropower stations built in mountainous areas, and the application range of the grounding grid device is expanded; the connecting rod 9 of the grounding rod 5 is used for connecting the pointed rod 10, and the helical blade arranged at one end of the pointed rod 10 can improve the soil drilling capability and is convenient for inserting into soil with more rocks; the pointed rod 10 and the connecting rod 9 are movably connected, so that the pointed rod 10 and the connecting rod 9 can be flexibly disassembled and assembled, transportation is facilitated, selective use is facilitated, and the length of the grounding rod 5 is adjusted; be provided with scale mark 12 on pointed stick 10 and be convenient for the reading, improve the depth of insertion accuracy, limit chuck 13 card is on the position that scale mark 12 of required degree of depth pointed first, then, insert the pointed end of pointed stick 10 in the soil, and beat the earial drainage ring 4 downwards, the limit chuck 13 on observing every pointed stick 10 moves to the soil layer surface, can stop beating, then dismantle limit chuck 13, and take off from pointed stick 10, accomplish the installation of earth bar 5, improved the even degree of each earth bar 5 depth of insertion through limit chuck 13, improved the convenience of adjustment depth of insertion.

The lower end of the connecting rod is in threaded connection with the upper end of the pointed rod; in this embodiment, can set up one section external screw thread at the surface of the lower extreme of connective bar, set up the mounting groove with connective bar lower extreme looks adaptation in pointed stick upper end to processing the internal thread on the inner wall of mounting groove, realizing through the screw thread interlock that the connective bar is connected with dismantling of pointed stick, the dismouting earth bar 5 of being convenient for is convenient for separately transport, avoids pointed stick accidental injury, is favorable to adjusting the length of earth bar 5 simultaneously.

The limiting chuck 13 comprises a first semicircular disc 14 and a second semicircular disc 15; the first half-round disc 14 is connected with the second half-round disc 15 in a clamping manner; first half disc 14 and second semicircle dish 15 joint, during the use, select suitable spacing position earlier, reduce half disc and second dish disc butt joint in this position department to form spacing chuck 13, the earth bar 5 installation is accomplished the back, on the soil layer surface, detaches first half disc 14 and second semicircle dish 15 once more, takes off from sharp head stick 10, is convenient for retrieve repetitious usage.

Arc-shaped grooves 16 are formed in the opposite side walls of the first semicircular disc 14 and the second semicircular disc 15; the arc-shaped grooves 16 are butted to form a clamping groove 151 for the pointed rod 10 to pass through; the arc-shaped grooves 16 on the side walls of the first half disc 14 and the second half disc form a clamping groove 151 matched with the outer diameter of the pointed rod 10 in a butt joint mode, and the clamping groove can be opened at a certain height of the pointed rod 10 and cannot slide downwards. An anti-slip rubber ring can be arranged on the inner wall of the arc-shaped groove 16, so that the friction coefficient is increased, and the anti-slip rubber ring can be prevented from slipping downwards due to knocking vibration.

The side wall of the first half disc 14 is provided with a lug; a clamping groove 151 is formed in the side wall of the second half-round disc 15 corresponding to the protruding block; through the clamping action of the convex blocks 141 and the clamping grooves 151, the first half-circular disc 14 and the second half-circular disc 15 can be stably combined after being butted, and the disassembly is convenient.

The upper surface edges of the first semicircular disc 14 and the second semicircular disc 15 extend upwards to form a section of arc-shaped rib 17; the arc-shaped ribs 17 facilitate the gripping of the first half disc 14 and the second half disc 15 by hand from the surface of the soil layer.

The lower surfaces of the first semicircular disc 14 and the second semicircular disc 15 are provided with ground grabbing protrusions 18; the grip protrusion 18 can increase the contact with the ground surface and prevent the other ground rod 5 from moving due to vibration when adjusted.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (7)

1. A resistance-reducing grounding grid device for a hydropower station comprises a leading-out wire (1), an electrode unit (2), a connecting wire (3) and a leakage ring (4) which are connected in sequence; the circumference of the leakage ring (4) is also provided with a grounding rod (5); the method is characterized in that: the electrode unit (2) comprises an antifreeze metal electrode unit (6), an anticorrosion filler metal electrode unit (7) and a resistance reducing filler metal electrode unit (8) which are sequentially connected by a connecting wire (3); the grounding rod (5) comprises a connecting rod (9) and a pointed rod (10); one end of the connecting rod (9) is fixedly connected with the drainage ring (4); the other end of the connecting rod (9) is movably connected with the pointed rod (10); the pointed end of the pointed rod (10) is provided with a section of spiral part (11); the surface of the pointed rod (10) is also provided with a scale mark (12); the pointed rod (10) is movably provided with a split type limiting chuck (13).

2. The resistance-reducing grounding grid device for the hydropower station according to claim 1, wherein: the lower end of the connecting rod (9) is in threaded connection with the upper end of the pointed rod (10).

3. The resistance-reducing grounding grid device for the hydropower station according to claim 1, wherein: the limiting chuck (13) comprises a first semicircular disc (14) and a second semicircular disc (15); the first half-round disc (14) is connected with the second half-round disc (15) in a clamping mode.

4. The resistance-reducing grounding grid device for the hydropower station according to claim 3, wherein: arc-shaped grooves (16) are formed in the opposite side walls of the first semicircular disc (14) and the second semicircular disc (15); the arc-shaped grooves (16) are butted to form a clamping groove (151) for the pointed rod (10) to pass through.

5. The resistance-reducing grounding grid device for the hydropower station according to claim 3, wherein: the side wall of the first half disc (14) is provided with a lug; and a clamping groove (151) is formed in the side wall of the second semicircular disc (15) and corresponds to the protruding block.

6. The resistance-reducing grounding grid device for the hydropower station according to claim 3, wherein: the edge of the upper surface of each of the first semicircular disc (14) and the second semicircular disc (15) extends upwards to form a section of arc-shaped rib (17).

7. The resistance-reducing grounding grid device for the hydropower station according to claim 3, wherein: the lower surfaces of the first semicircular disc (14) and the second semicircular disc (15) are provided with ground grabbing protrusions (18).

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