CN210201482U - Neutral point grounding protection device of power transformer - Google Patents
Neutral point grounding protection device of power transformer Download PDFInfo
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- CN210201482U CN210201482U CN201921533732.1U CN201921533732U CN210201482U CN 210201482 U CN210201482 U CN 210201482U CN 201921533732 U CN201921533732 U CN 201921533732U CN 210201482 U CN210201482 U CN 210201482U
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- mounting platform
- transformer
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Abstract
The utility model discloses a power transformer neutral point protection device that connects to ground, including mounting platform, the equal fixedly connected with support column in both ends of mounting platform bottom, one of them fixedly connected with electric cabinet on the support column, mounting platform's top fixedly connected with isolator and arrester, isolator keeps away from mounting platform's one end and is connected with the neutral wiring of transformer, the utility model relates to a power transformer neutral point protection device that connects to ground can change the connection condition between discharge rod and the regulating block through the locking bolt who sets up, loosens locking bolt, can make the discharge rod can slide in the recess on the regulating block, and when the discharge rod slides in the regulating block, can adjust the length that the discharge rod passed regulating block one end to because the electric column is fixed connection on the terminal of discharge transformer to the adjustment of interval between discharge rod and the electric column can be realized to the length that the regulating block one end was passed to the discharge rod to the adjustment.
Description
Technical Field
The utility model relates to a power transformer neutral point ground protection device belongs to transformer technical field.
Background
10kV and 220kV are main voltage levels of a power supply network, a neutral point generally adopts a direct grounding mode due to high voltage, and partial transformers adopt a neutral point ungrounded mode in order to limit single-phase short-circuit current due to the requirements of relay protection setting configuration, communication interference prevention and the like. In this operation mode, lightning strike, single-phase short-circuit fault and the like can cause neutral point overvoltage, and most transformers are in graded insulation, so that the overvoltage threatens the insulation of the neutral point greatly, and a protection device must be arranged on the neutral point to prevent accidents. The discharge rod and the electric pole in the existing power transformer central point ground protection device are respectively fixedly connected to the lightning arrester and the terminal of the discharge mutual inductor, the fixed connection structure cannot adjust the distance between the discharge rod and the electric pole, and when discharging, the circuit is very easy to cause unsmooth, so that accidents are caused, potential safety hazards are caused, and the safety of the existing protection device is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a power transformer neutral point grounding protection device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a power transformer neutral point grounding protection device is designed, and comprises an installation platform, wherein two ends of the bottom of the installation platform are fixedly connected with support columns, one of the support columns is fixedly connected with an electric cabinet, the top of the installation platform is fixedly connected with an isolating switch and a lightning arrester, one end of the isolating switch, which is far away from the installation platform, is connected with transformer neutral wiring, one end of the lightning arrester, which is far away from the installation platform, is fixedly connected with an adjusting support plate, one end of the transformer neutral wiring, which is far away from the isolating switch, is connected with the adjusting support plate, one end of the adjusting support plate, which is far away from the transformer neutral wiring, is fixedly connected with an adjusting block, a groove is formed in the adjusting block, a discharge rod is connected in the groove in a sliding manner, a locking bolt is arranged above the adjusting, the transformer neutral connection terminal is characterized in that a discharge mutual inductor is fixedly arranged at one end, far away from the transformer neutral connection, of the top of the mounting platform, the discharge mutual inductor is fixedly connected to the top of the supporting block, the supporting block is fixedly connected to the top of the mounting platform, a binding post is fixedly connected to the top of the discharge mutual inductor, one end, far away from the discharge mutual inductor, of the binding post is fixedly connected with an electric pole, and a discharge gap is formed between the electric pole and a discharge rod in a non-.
Preferably, one end of the support column, which is far away from the mounting platform, is fixedly connected with a support base plate, and the cross-sectional area of the support base plate is larger than that of the support column.
Preferably, equal fixedly connected with limit slide block on the lateral wall of discharge electrode both sides, all correspond limit slide block on the inner wall of recess both sides and seted up spacing spout, spacing spout and limit slide block phase-match set up, just limit slide block sliding connection is in the inside of spacing spout.
Preferably, a plurality of clamping grooves are formed in the top of the discharge rod, the distance between the clamping grooves is the same, and the clamping grooves are matched with the locking bolts.
Preferably, the outer wall of one end, far away from the adjusting block, of the locking bolt is fixedly connected with a shifting block.
The utility model provides a pair of power transformer neutral point ground protection device, beneficial effect lies in: the utility model relates to a power transformer neutral point grounding protection device is through the locking bolt that sets up, can change the connection condition between discharge rod and the regulating block, loosen the locking bolt, can make the discharge rod slide in the recess on the regulating block, when the discharge rod slides in the regulating block, can adjust the length that the discharge rod passed regulating block one end, and because the electric pole is fixed connection on discharge transformer's terminal, thereby adjust the length that the discharge rod passed regulating block one end and can realize the adjustment to interval between discharge rod and the electric pole.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of part A of the present invention;
fig. 3 is a schematic structural view between the middle adjusting block and the discharging rod of the present invention.
In the figure: the transformer neutral connection device comprises a mounting platform 1, a support column 2, a support base plate 3, an electric cabinet 4, an isolating switch 5, a lightning arrester 6, a transformer neutral connection 7, an adjusting support plate 8, an adjusting block 9, a groove 10, a discharge rod 11, a limiting slide block 12, a limiting slide groove 13, a locking bolt 14, a shifting block 15, a clamping groove 16, a support block 17, a discharge mutual inductor 18, a binding post 19 and an electric pole 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a power transformer neutral point grounding protection device comprises a mounting platform 1, wherein two ends of the bottom of the mounting platform 1 are fixedly connected with support columns 2, one of the support columns 2 is fixedly connected with an electric cabinet 4, the top of the mounting platform 1 is fixedly connected with an isolating switch 5 and a lightning arrester 6, one end of the isolating switch 5 far away from the mounting platform 1 is connected with a transformer neutral wire 7, one end of the lightning arrester 6 far away from the mounting platform 1 is fixedly connected with an adjusting support plate 8, one end of the transformer neutral wire 7 far away from the isolating switch 5 is connected with the adjusting support plate 8, one end of the top of the adjusting support plate 8 far away from the transformer neutral wire 7 is fixedly connected with an adjusting block 9, a groove 10 is formed in the adjusting block 9, a discharge rod 11 is slidably connected inside the groove 10, a locking bolt 14 is arranged above the adjusting block 9, one end of the locking bolt 14 penetrating through, one end of the transformer neutral connection wire 7 is kept away from at the top of the mounting platform 1, a discharge transformer 18 is fixedly mounted at the top of the supporting block 17 through the supporting block 17, the discharge transformer 18 is fixedly connected to the top of the supporting block 17, the supporting block 17 is fixedly connected to the top of the mounting platform 1, a binding post 19 is fixedly connected to the top of the discharge transformer 18, one end of the binding post 19, which is far away from the discharge transformer 18, is fixedly connected with an electric post 20, and a discharge gap is formed between the electric post 20 and.
The end of the support column 2 far away from the mounting platform 1 is fixedly connected with a support base plate 3, the cross-sectional area of the support base plate 3 is larger than that of the support column 2, the support base plate 3 increases the contact area between the support column 2 and the ground, so that the support column 2 and the ground can be more stably mounted, the side walls on two sides of the discharge rod 11 are fixedly connected with limit sliders 12, the inner walls on two sides of the groove 10 are respectively provided with a limit chute 13 corresponding to the limit sliders 12, the limit chutes 13 are arranged in a matching way with the limit sliders 12, the limit sliders 12 are connected inside the limit chutes 13 in a sliding way, when the discharge rod 11 moves along the groove 10, the limit sliders 12 can be driven to slide inside the limit chutes 13, so that the connection between the discharge rod 11 and the adjusting block 9 is more stable, the top of the discharge rod 11 is provided with a plurality of clamping grooves, and draw-in groove 16 and locking bolt 14 phase-match set up, locking bolt 14 passes the one end of regulating block 9 and pegs graft in the inside of draw-in groove 16, can be so that locking bolt 14 and regulating block 9 can be more stable carry out the centre gripping to discharge electrode 11, locking bolt 14 keeps away from fixedly connected with shifting block 15 on the outer wall of regulating block 9 one end, shifting block 15 can increase locking bolt 14's the arm of force, makes locking bolt 14 labour saving and time saving more when rotating.
The working principle is as follows: when the device is used, the locking bolt 14 can be driven to rotate by rotating the shifting block 15, the locking bolt 14 can move towards the discharge rod 11 when rotating forwards, the locking bolt 14 is inserted in the clamping groove 16 when the locking bolt 14 moves towards the discharge rod 11, the locking bolt 14 and the adjusting block 9 can clamp the discharge rod 11 more stably, when the locking bolt 14 is reversely rotated, the locking bolt 14 can be moved towards one end far away from the discharge rod 11, the locking bolt 14 is separated from the discharge rod 11, the discharge rod 11 can slide in the groove 10 on the adjusting block 9, when the discharge rod 11 slides in the adjusting block 9, the length of the discharge rod 11 penetrating through one end of the adjusting block 9 is adjusted, the electric pole 20 is fixedly connected to the terminal 19 of the discharge transformer 18, so that the adjustment of the distance between the discharge rod 11 and the electric pole 20 can be realized by adjusting the length of the discharge rod 11 penetrating through one end of the adjusting block 9.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The power transformer neutral point grounding protection device is characterized by comprising a mounting platform (1), wherein two ends of the bottom of the mounting platform (1) are fixedly connected with support columns (2), one of the support columns (2) is fixedly connected with an electric cabinet (4), the top of the mounting platform (1) is fixedly connected with an isolating switch (5) and a lightning arrester (6), one end of the isolating switch (5), far away from the mounting platform (1), is connected with a transformer neutral connection plate (7), one end of the lightning arrester (6), far away from the mounting platform (1), is fixedly connected with an adjusting support plate (8), one end of the transformer neutral connection plate (7), far away from the isolating switch (5), is connected with the adjusting support plate (8), one end of the adjusting support plate (8), far away from the transformer neutral connection plate (7), is fixedly connected with an adjusting block (9), a groove (10) is arranged on the adjusting block (9), a discharging rod (11) is connected in the groove (10) in a sliding manner, a locking bolt (14) is arranged above the adjusting block (9), the locking bolt (14) penetrates through one end of the adjusting block (9) to be contacted with the discharge rod (11), one end of the top of the mounting platform (1) far away from the neutral connection (7) of the transformer is fixedly provided with a discharge transformer (18) through a supporting block (17), the discharge transformer (18) is fixedly connected to the top of the supporting block (17), the supporting block (17) is fixedly connected to the top of the mounting platform (1), the top of the discharge transformer (18) is fixedly connected with a binding post (19), one end of the binding post (19) far away from the discharge transformer (18) is fixedly connected with an electric post (20), the electric pole (20) is not in contact with the discharge rod (11) and is provided with a discharge gap.
2. A power transformer neutral point grounding protection device according to claim 1, characterized in that a supporting base plate (3) is fixedly connected to one end of the supporting column (2) far from the mounting platform (1), and the cross-sectional area of the supporting base plate (3) is larger than that of the supporting column (2).
3. The power transformer neutral point grounding protection device according to claim 1, wherein the side walls of the two sides of the discharge rod (11) are fixedly connected with limiting sliding blocks (12), the inner walls of the two sides of the groove (10) are respectively provided with limiting sliding grooves (13) corresponding to the limiting sliding blocks (12), the limiting sliding grooves (13) are matched with the limiting sliding blocks (12), and the limiting sliding blocks (12) are slidably connected inside the limiting sliding grooves (13).
4. The neutral point grounding protection device of the power transformer as claimed in claim 1, wherein a plurality of slots (16) are formed at the top of the discharge rod (11), the plurality of slots (16) have the same spacing, and the slots (16) are matched with the locking bolts (14).
5. A neutral point grounding protection device of a power transformer as claimed in claim 1, wherein a shifting block (15) is fixedly connected to the outer wall of one end of the locking bolt (14) far away from the adjusting block (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921533732.1U CN210201482U (en) | 2019-09-16 | 2019-09-16 | Neutral point grounding protection device of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921533732.1U CN210201482U (en) | 2019-09-16 | 2019-09-16 | Neutral point grounding protection device of power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210201482U true CN210201482U (en) | 2020-03-27 |
Family
ID=69865704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921533732.1U Active CN210201482U (en) | 2019-09-16 | 2019-09-16 | Neutral point grounding protection device of power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210201482U (en) |
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2019
- 2019-09-16 CN CN201921533732.1U patent/CN210201482U/en active Active
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