CN210379983U - Transformer substation secondary equipment grounding device - Google Patents
Transformer substation secondary equipment grounding device Download PDFInfo
- Publication number
- CN210379983U CN210379983U CN201921852975.1U CN201921852975U CN210379983U CN 210379983 U CN210379983 U CN 210379983U CN 201921852975 U CN201921852975 U CN 201921852975U CN 210379983 U CN210379983 U CN 210379983U
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- copper bar
- grounding
- ground
- secondary equipment
- transformer substation
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 77
- 229910052802 copper Inorganic materials 0.000 claims abstract description 77
- 239000010949 copper Substances 0.000 claims abstract description 77
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model discloses a transformer substation's secondary equipment earthing device, including ground copper bar and sheath, the sheath comprises insulated column and the lug of setting in insulated column bottom both sides, set up on the insulated column with ground copper bar assorted through-hole one, the ground copper bar sets up in through-hole one, the lug passes through bolt one and is connected with cable support, be provided with at least one tie point of being connected with transformer substation's secondary equipment on the ground copper bar, ground copper bar ground connection a bit, the utility model discloses the operation is maintained conveniently, can improve cable pit space utilization, reduces cable pit preparation cycle, can avoid appearing ground net "multiple spot ground connection" risk simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the earthing device of transformer substation uses, concretely relates to secondary equipment is sheath for ground connection copper bar.
Background
The normal and reliable operation of electrical secondary equipment in a transformer substation, such as relay protection, measurement control and the like, is an important defense line for ensuring the safety and stability of a power grid, the electrical secondary equipment is in a high-voltage magnetic field environment in the substation for a long time and is easily subjected to electromagnetic interference, and a shielding grounding point on the device needs to be reliably grounded so that the device has good anti-interference capability.
At present, secondary equipment of a transformer substation is indirectly grounded through a grounding copper bar laid in a cable trench, the grounding copper bar is a bare copper bar and is laid in a non-common layer with a control cable, an optical cable and the like in the cable trench to prevent other cables from leaking electricity to enable the grounding copper bar to be electrified, and the grounding copper bar and a cable support in the cable trench are fixed on a support in a bundling mode through a support insulator.
The existing grounding mode has the following defects and shortcomings:
1. because the ground copper bar can not lay with other cables altogether, lead to the cable pit to set up the multilayer, the cable pit degree of depth is higher, and cable pit preparation time limit for a project is longer in the work progress. In the later operation and maintenance process, operation and maintenance personnel need to jump into the cable trench to check the operation condition of the lower-layer cable, and the maintenance difficulty is high.
2. The grounding copper bar frequently slips to the cable support due to infirm bundling in the station, so that the bare copper bar is in direct contact with the metal cable support, a grounding grid multipoint grounding accident is caused, and the safe and stable operation of electrical secondary equipment is threatened.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at prior art not enough, provide a transformer substation's secondary equipment earthing device, the operation is maintained conveniently, can improve cable pit space utilization, reduces cable pit preparation cycle, can avoid appearing ground net "multiple spot ground connection" risk simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a transformer substation's secondary equipment earthing device, includes ground copper bar and sheath, the sheath comprises insulated column and the lug that sets up in insulated column bottom both sides, set up on the insulated column with ground copper bar assorted through-hole one, the ground copper bar sets up in through-hole one, the lug passes through bolt one and is connected with cable support, be provided with at least one tie point of being connected with transformer substation's secondary equipment on the ground copper bar, ground copper bar is ground at a point.
Furthermore, the cable support is a plurality of, every all set up the sheath on the cable support, set up the ground connection copper bar in the through-hole one, connect between the ground connection copper bar and form annular ground net, annular ground net is ground at a bit.
Further, the ground copper bar is perpendicular to the cable support.
Furthermore, the grounding copper bar is inserted into the first through hole, one or more of the first through holes are provided with three through holes, the three through holes are positioned on two sides of the insulating column, pin shafts are respectively and vertically inserted into the three through holes and are in contact with the outer peripheral surface of the insulating column, the other end of each pin shaft is provided with a second bolt, and the end surface of each second bolt is pressed against the outer peripheral surface of the insulating column.
Furthermore, the insulating column is made of ceramic materials, and the lug is made of angle steel.
The utility model has the advantages that:
1. a transformer substation secondary equipment grounding device comprises a grounding copper bar and a sheath, wherein the sheath consists of an insulating column and lugs arranged on two sides of the bottom end of the insulating column, a first through hole matched with the grounding copper bar is formed in the insulating column, the grounding copper bar is arranged in the first through hole, and the grounding copper bar is limited in the sheath, so that the risk of the grounding copper bar slipping caused by a traditional binding mode is avoided, the insulation between the periphery of the copper bar and a cable support can be realized, the cable support is prevented from being contacted, and a multipoint grounding accident is avoided; the lug passes through bolt one and cable support connection, can make the sheath fix on cable support through bolt one, be provided with at least one tie point of being connected with transformer substation's secondary equipment on the ground copper bar, ground copper bar ground connection a bit, the ground copper bar passes the sheath and lays for be full of insulating medium around the ground copper bar, cables such as other control cables, power cable can lay with the ground copper bar altogether layer, have both practiced thrift the ditch inner space, have reduced the cable trench degree of depth again, have reduced cable trench preparation engineering volume, have shortened cable trench preparation cycle, lay altogether simultaneously after, fortune dimension personnel can directly perceivedly inspect each cable running state in can not jumping into the ditch, convenient operation is maintained.
2. The cable support is a plurality of, every all set up the sheath on the cable support, set up ground connection copper bar in the through-hole, connect between the ground connection copper bar and form annular ground net, annular ground net ground connection a bit, a plurality of transformer substation's secondary equipment accessible share annular ground net realize a bit ground connection, avoid ground connection separately to arouse the potential difference, guarantee secondary equipment ground connection safety.
3. The ground copper bar is perpendicular to the cable support, namely the ground copper bar is parallel to the cable, and laying of the cable is not hindered.
4. The grounding copper bar is inserted in the first through hole, the structure is simple, the installation is convenient, one or more of the two through holes are formed in the grounding copper bar, the two through holes are located on two sides of the insulating column, the pin shafts are respectively and vertically inserted in the two through holes and are in contact with the outer peripheral surface of the insulating column, the other end of each pin shaft is provided with a second bolt, the end surfaces of the two studs of each bolt are pressed on the outer peripheral surface of the insulating column in a supporting mode, the positions of the grounding copper bar and the grounding grid are limited, the grounding copper bar and the grounding grid are prevented from moving, the grounding point is driven to deviate from the original position, and the stability of the grounding device.
5. The insulating column is made of ceramic materials, the lug is made of angle steel, and the insulating column is high in strength, stable in chemical property, not prone to damage and ageing and long in service life.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is an enlarged view of the portion C of FIG. 3;
fig. 5 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 6 is an enlarged view of portion D of FIG. 5;
the grounding device comprises a grounding copper bar 1, a sheath 2, an insulating column 3, a lug 4, a through hole I5, a bolt I6, a cable support 7, an annular grounding net 8, a through hole II 9, a pin shaft 10, a bolt II 11 and a through hole III 12.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
As shown in fig. 1-4, a first embodiment of the present invention is a grounding device for secondary equipment in a transformer substation, comprising a grounding copper bar 1 and a sheath 2, as shown in fig. 1, the sheath 2 is composed of an insulating column 3 and lugs 4 arranged at two sides of the bottom end of the insulating column 3, the insulating column 3 is of a cylindrical structure and made of ceramic, the lugs 4 are angle steel, two of them are arranged in a mirror image manner, vertical plates of the lugs 4 are fixed on the outer peripheral surface of the bottom end of the insulating column 3 through adhesive, in order to prevent the lugs 4 from falling off from the insulating column 3, contact positions between the lugs 4 and the insulating column 3 are cut by a cutting machine to form vertical surfaces, contact area is increased, a through hole two 9 is punched on a horizontal plate of the lugs 4 through a punching machine, as shown in fig. 2, a bolt one 6 is inserted in the through hole two 9, the bolt one 6 is a half-thread bolt, a screw hole matched with the lower part, the lower part of the first bolt 6 is installed in the screw hole in a threaded mode. Punch out one through-hole 5 with ground copper bar 1 assorted on the insulated column 3 through the puncher, ground copper bar 1 is pegged graft in one through-hole 5, ground copper bar 1 is perpendicular with cable support 7, punch out two through-holes three 12 through the puncher on the ground copper bar 1, as shown in fig. 3 and 4, through-hole three 12 is located insulated column 3 both sides, perpendicular grafting round pin axle 10 in three 12 through-hole, the outer peripheral face of round pin axle 10 head contacts with the outer peripheral face of insulated column 3, the round pin axle 10 other end is through the tapping machine and is beated out the screw, screw internal thread mounting bolt two 11, the terminal surface of bolt two 11 double-screw bolt is supported and is pressed the outer peripheral face of insulated.
During the use, fix sheath 2 on cable support 7 earlier, peg graft in through-hole one 5 with ground copper bar 1, later peg graft respectively in through-hole three 12 with two round pin axles 10, install bolt two 11 at last and screw up in the screw, make the terminal surface of bolt two 11 support to press on the outer peripheral face of insulated column 3, after the installation is accomplished, weld the earth connection of transformer substation's secondary equipment on ground copper bar 1, because ground copper bar 1 is the bare copper, consequently, can weld in any place of ground copper bar 1, make secondary equipment and ground copper bar 1 electricity be connected, ground copper bar 1 passes through ground copper cable electricity and connects the earthing pole, ground copper cable sets up one, one end of ground copper cable welds with one point of ground copper bar, other end welding earthing pole, the earthing pole buries soil.
Example two
As shown in fig. 5 and fig. 6, the second embodiment of the present invention, this embodiment is different from embodiment one in that, cable support 7 is a plurality of, use 40 as an example, arrange into four rows, ten per row, all fix sheath 2 on every cable support 7, the fixed mode of sheath 2 is the same as embodiment one, all peg graft ground copper bar 1 in every through-hole 5, the equal end-to-end welding of ground copper bar 1 in every row, after the welding is accomplished, weld ground copper bar between the head end and the tail end of adjacent ground copper bar, all ground copper bar 1 form annular ground net 8, set up round pin axle 10 on the ground copper bar 1 in the sheath 2 that is located the four corners, round pin axle 10 other end mounting bolt two 11, the position and the mounting means of round pin axle 10 and bolt two 11 communicate with embodiment one completely. When the transformer substation secondary equipment grounding wire is used, grounding wires of one or more transformer substation secondary equipment are welded on any point of the annular grounding grid 8, one end of the grounding copper cable is welded with one point of the annular grounding grid 8, the other end of the grounding copper cable is welded with a grounding electrode, and the grounding electrode is buried in soil.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The utility model provides a transformer substation's secondary equipment earthing device, its characterized in that, includes ground copper bar (1) and sheath (2), sheath (2) comprise insulator column (3) and lug (4) that set up in insulator column (3) bottom both sides, set up on insulator column (3) with ground copper bar (1) assorted through-hole (5), ground copper bar (1) sets up in through-hole (5), lug (4) are connected with cable support (7) through bolt (6), be provided with at least one tie point of being connected with transformer substation's secondary equipment on ground copper bar (1), ground copper bar (1) a little ground connection.
2. The grounding device for the secondary equipment of the transformer substation as claimed in claim 1, wherein the number of the cable supports (7) is multiple, each cable support (7) is provided with a sheath (2), a grounding copper bar (1) is arranged in each through hole I (5), the grounding copper bars (1) are connected with each other to form an annular grounding grid (8), and the annular grounding grid (8) is grounded at one point.
3. A substation secondary equipment grounding device according to claim 1, characterized in that the grounding copper bars (1) are perpendicular to the cable holder (7).
4. The grounding device for the secondary equipment of the transformer substation as claimed in claim 1 or 2, wherein the grounding copper bars (1) are inserted into the first through holes (5), one or more of the grounding copper bars (1) are provided with three through holes (12), the three through holes (12) are located on two sides of the insulating column (3), the three through holes (12) are respectively and vertically inserted with pin shafts (10), the pin shafts (10) are in contact with the outer peripheral surface of the insulating column (3), the other ends of the pin shafts (10) are provided with second bolts (11), and the end surfaces of the studs of the second bolts (11) are pressed against the outer peripheral surface of the insulating column (3).
5. A substation secondary equipment grounding device according to claim 1, characterized in that the insulating posts (3) are ceramic material and the lugs (4) are angle steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921852975.1U CN210379983U (en) | 2019-10-31 | 2019-10-31 | Transformer substation secondary equipment grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921852975.1U CN210379983U (en) | 2019-10-31 | 2019-10-31 | Transformer substation secondary equipment grounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210379983U true CN210379983U (en) | 2020-04-21 |
Family
ID=70257062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921852975.1U Active CN210379983U (en) | 2019-10-31 | 2019-10-31 | Transformer substation secondary equipment grounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210379983U (en) |
-
2019
- 2019-10-31 CN CN201921852975.1U patent/CN210379983U/en active Active
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