CN218733212U - Adjustable transformer neutral point gap protection device - Google Patents
Adjustable transformer neutral point gap protection device Download PDFInfo
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- CN218733212U CN218733212U CN202223017850.1U CN202223017850U CN218733212U CN 218733212 U CN218733212 U CN 218733212U CN 202223017850 U CN202223017850 U CN 202223017850U CN 218733212 U CN218733212 U CN 218733212U
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- 230000007246 mechanism Effects 0.000 claims abstract description 7
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- 238000009413 insulation Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
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Abstract
The utility model discloses a neutral point gap protection device of an adjustable transformer, which comprises a base, and an isolating switch, an arrester and a current transformer which are sequentially arranged at the top of the base along the horizontal direction, wherein a protection gap is arranged between the current transformer and the arrester, the top end of the base is slidably connected with a slide plate, the top end of the slide plate is fixedly provided with a shielding box, and the current transformer is arranged on the shielding box; both sides of the sliding seat plate are provided with limiting grooves which are fixedly connected to the top end of the base, and the sliding seat plate is in limiting fit with the limiting grooves; install adjustment mechanism on the base, adjustment mechanism includes regulating part and location portion, and regulating part is used for adjusting the position of saddle, and location portion is used for fixing the position of saddle. The utility model can adjust the distance length of the protection gap, and is convenient for setting a proper protection gap according to the environment; and the change of the gap distance of the protective gap due to long-term use can be prevented, and the condition that neutral point insulation is damaged due to overvoltage is avoided.
Description
Technical Field
The utility model relates to a circuit protection device technical field especially relates to a transformer neutral point clearance protection device with adjustable.
Background
110kV 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.
Chinese utility model patent CN214314532U discloses a novel transformer neutral point gap ground protection device, and the distance in discharge gap is fixed, can't set up suitable protection clearance according to the environment at present. In addition, the change of the discharge gap is easy to occur in the long-term use process, and the risk of neutral point insulation damage caused by overvoltage exists, so that the neutral point gap protection device of the adjustable transformer is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a transformer neutral point clearance protection device with adjustable to solve the problem that above-mentioned prior art exists.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a neutral point gap protection device of an adjustable transformer, which comprises a base, an isolating switch, an arrester and a current transformer, wherein the isolating switch, the arrester and the current transformer are sequentially arranged at the top of the base along the horizontal direction; both sides of the sliding seat plate are provided with limiting grooves, the limiting grooves are fixedly connected to the top end of the base, and the sliding seat plate is in limiting fit with the limiting grooves; the adjusting mechanism is installed on the base and comprises an adjusting portion and a positioning portion, the adjusting portion is used for adjusting the position of the sliding seat plate, and the positioning portion is used for fixing the position of the sliding seat plate.
Preferably, the base comprises two parallel U-shaped plates, and the two limiting grooves are respectively and fixedly installed at the top ends of the two U-shaped plates; the adjusting part comprises a threaded hole plate, the two ends of the threaded hole plate are fixedly connected with the two U-shaped plates respectively, a lead screw is connected to the inner thread of a threaded hole of the threaded hole plate, a fixing plate is connected to one end of the lead screw in a rotating mode, and the fixing plate is fixedly connected to the bottom end of the sliding seat plate.
Preferably, the positioning part comprises positioning blocks respectively arranged in the two U-shaped plates, a first connecting rod is hinged to one side, away from the U-shaped plates, of the positioning block, and the tail end of the first connecting rod is hinged to the fixing plate; the positioning block is provided with a positioning block, the positioning block is provided with a positioning hole, the positioning block is connected with the U-shaped plate, and the positioning block is fixedly matched with the U-shaped plate through the connecting bolt and the threaded hole.
Preferably, a positioning plate is arranged between the two U-shaped plates, two ends of the top of the positioning plate are respectively in sliding connection with the top ends of the two U-shaped plates, and the positioning plate is sleeved on the screw rod in a sliding manner; a second connecting rod is hinged to one side, far away from the U-shaped plate, of the positioning block, the length of the second connecting rod is the same as that of the first connecting rod, and the tail end of the second connecting rod is hinged to the positioning plate; the top end of the U-shaped plate is provided with a fixing piece, and the positioning plate is fixedly matched with the U-shaped plate through the fixing piece.
Preferably, a through hole is formed in the positioning plate, a sliding sleeve is fixedly connected in the through hole, the sliding sleeve is sleeved on the screw rod, and a gap is formed between the sliding sleeve and the screw rod.
Preferably, the fixing part comprises a slide rail fixedly connected to the U-shaped plate, an L-shaped fixing block is connected to the slide rail in a limiting sliding manner, a vertical threaded hole is formed in the L-shaped fixing block, a fastening bolt is connected to the inner thread of the vertical threaded hole, and the bottom end of the fastening bolt is abutted to the top end of the positioning plate.
Preferably, the arrester top is close to one side demountable installation of current transformer has the horizontal clearance stick, current transformer's top fixed mounting has the installation sleeve, threaded connection has the locking swivel nut on the telescopic top outer wall of installation, the installation sleeve passes through the locking swivel nut can be dismantled and be connected with the right angle clearance stick, the horizontal clearance stick with the equal demountable installation of the relative one end of right angle clearance stick has the clearance ball, two clearance between the clearance ball does the protection clearance.
The utility model discloses a following technological effect:
the utility model provides an adjustable transformer neutral point clearance protection device, through the position of regulating part regulation slide block board, and then realize adjusting the distance length of protection clearance to be convenient for set up suitable protection clearance according to the environment; and fix the position of slide plate through location portion, can prevent that the change of clearance distance from appearing because of long-term the use in the protection clearance, avoid appearing because the condition that overvoltage causes neutral point insulation damage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the adjustable transformer neutral point gap protection device of the present invention;
FIG. 2 is a partial enlarged view of A in FIG. 1;
fig. 3 is a schematic right cross-sectional view of the adjusting mechanism of the present invention;
fig. 4 is a top view of the positioning block of the present invention;
the lightning arrester comprises an isolating switch-1, a lightning arrester-2, a current transformer-3, a protection gap-4, a sliding seat plate-5, a shielding box-6, a limiting groove-7, a U-shaped plate-8, a threaded hole plate-9, a lead screw-10, a fixing plate-11, a positioning block-12, a first connecting rod-13, a horizontal long hole-14, a connecting bolt-15, a positioning plate-16, a second connecting rod-17, a sliding sleeve-18, a sliding rail-19, an L-shaped fixing block-20, a fastening bolt-21, a horizontal gap rod-41, an installation sleeve-42, a locking threaded sleeve-43, a right-angle gap rod-44 and a gap ball-45.
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. 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.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The utility model provides a transformer neutral point clearance protection device with adjustable, including the base and along installing isolator 1, arrester 2, current transformer 3 at the base top in proper order in the horizontal direction, be provided with between current transformer 3 and the arrester 2 and protect clearance 4, base top sliding connection has slide plate 5, the top fixed mounting of slide plate 5 has shielding box 6, current transformer 3 fixed mounting is on shielding box 6; both sides of the sliding seat plate 5 are provided with limiting grooves 7, the limiting grooves 7 are fixedly connected to the top end of the base, and the sliding seat plate 5 is in limiting fit with the limiting grooves 7; install adjustment mechanism on the base, adjustment mechanism includes regulating part and location portion, and regulating part is used for adjusting the position of saddle board 5, and location portion is used for fixing the position of saddle board 5.
Furthermore, in order to conveniently adjust the position of the slide seat plate 5 and further change the distance of the protective gap 4 according to the environment, the base comprises two U-shaped plates 8 which are arranged in parallel, and two limiting grooves 7 are respectively and fixedly arranged at the top ends of the two U-shaped plates 8; the regulating part comprises a threaded hole plate 9, the two ends of the threaded hole plate 9 are fixedly connected with two U-shaped plates 8 respectively, a screw rod 10 is connected with the threaded hole of the threaded hole plate 9 in an internal thread mode, a fixing plate 11 is connected to one end of the screw rod 10 in a rotating mode, and the fixing plate 11 is fixedly connected to the bottom end of the slide plate 5.
Furthermore, in order to ensure that the gap distance of the protective gap 4 does not change due to long-term use, the positioning part comprises positioning blocks 12 which are respectively arranged in the two U-shaped plates 8, one side of each positioning block 12, which is far away from the U-shaped plate 8, is hinged with a first connecting rod 13, and the tail end of each first connecting rod 13 is hinged with the fixing plate 11; horizontal slot holes 14 are formed in the side walls of the U-shaped plates 8, connecting bolts 15 are arranged in the horizontal slot holes 14, threaded holes are formed in one sides, close to the U-shaped plates 8, of the positioning blocks 12, and the positioning blocks 12 are fixedly matched with the U-shaped plates 8 through the connecting bolts 15 and the threaded holes.
Furthermore, in order to conveniently adjust the position of the positioning block 12 so as to fix the positioning block 12 on the U-shaped plates 8, a positioning plate 16 is arranged between the two U-shaped plates 8, two ends of the top of the positioning plate 16 are respectively connected with the top ends of the two U-shaped plates 8 in a sliding manner, a through hole is formed in the positioning plate 16, a sliding sleeve 18 is fixedly connected in the through hole, the sliding sleeve 18 is sleeved on the screw rod 10, and a gap is formed between the sliding sleeve 18 and the screw rod 10; a second connecting rod 17 is hinged to one side, far away from the U-shaped plate 8, of the positioning block 12, the length of the second connecting rod 17 is the same as that of the first connecting rod 13, and the tail end of the second connecting rod 17 is hinged to a positioning plate 16; the top end of the U-shaped plate 8 is provided with a fixing piece, and the positioning plate 16 is fixedly matched with the U-shaped plate 8 through the fixing piece.
Further, when the positioning block 12 is fixed on the U-shaped plate 8, in order to prevent the position of the positioning plate 16 from sliding and influence the fixing effect between the positioning block 12 and the U-shaped plate 8, the fixing part comprises a slide rail 19 fixedly connected to the U-shaped plate 8, the slide rail 19 is connected with an L-shaped fixing block 20 in a limiting sliding manner, a vertical threaded hole is formed in the L-shaped fixing block 20, a fastening bolt 21 is connected with the inner thread of the vertical threaded hole, and the bottom end of the fastening bolt 21 is abutted to the top end of the positioning plate 16.
Further, one side demountable installation that the top of arrester 2 is close to current transformer 3 has horizontal gap stick 41, current transformer 3's top fixed mounting has installation sleeve 42, threaded connection has locking swivel nut 43 on installation sleeve 42's the top outer wall, installation sleeve 42 can be dismantled through locking swivel nut 43 and be connected with right angle gap stick 44, horizontal gap stick 41 and the equal demountable installation of the relative one end of right angle gap stick 44 have clearance ball 45, the clearance between two clearance balls 45 is protection clearance 4.
The utility model discloses transformer neutral point clearance protection device with adjustable's adjustment process as follows:
after the heights of the two clearance balls 45 are adjusted to be flush, the right-angle clearance rod 44 is fixed by using the locking threaded sleeve 43, if the distance of the protection clearance 4 needs to be adjusted, the connecting bolt 15 on the side wall of the U-shaped plate 8 and the fastening bolt 21 on the L-shaped fixing block 20 are firstly taken down, the positioning block 12 is separated from the U-shaped plate 8 by pushing the positioning plate 16, then the screw rod 10 is manually screwed, the front and back positions of the slide seat plate 5 are changed by using the screw rod 10, after the protection clearance 4 meets the requirements, the screw rod 10 is stopped being screwed, and the slide seat plate 5 can be fixed to a certain extent by using the matching of the threaded hole plate 9 and the screw rod; then the rethread promotes locating plate 16 to make locating piece 12 and U template 8 contact, and adjust the position of L type fixed block 20, make L type fixed block 20 and locating plate 16 align, utilize fastening bolt 21 to press locating plate 16 to U template 8 on, make the relative position of locating plate 16 and U template 8 fixed, then utilize connecting bolt 15 to fix locating piece 12 to U template 8 on, the position of locating piece 12 is fixed the back, under the effect of head rod 13, can further fix slide plate 5, prevent that protective gap 4 from appearing the change of clearance distance because of long-term the use.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (7)
1. A neutral point gap protection device of an adjustable transformer comprises a base, and an isolating switch (1), a lightning arrester (2) and a current transformer (3) which are sequentially arranged at the top of the base along the horizontal direction, wherein a protection gap (4) is arranged between the current transformer (3) and the lightning arrester (2), the neutral point gap protection device is characterized in that the top end of the base is connected with a slide plate (5) in a sliding manner, the top end of the slide plate (5) is fixedly provided with a shielding box (6), and the current transformer (3) is fixedly arranged on the shielding box (6); limiting grooves (7) are formed in two sides of the sliding seat plate (5), the limiting grooves (7) are fixedly connected to the top end of the base, and the sliding seat plate (5) is in limiting fit with the limiting grooves (7); the adjusting mechanism is installed on the base and comprises an adjusting portion and a positioning portion, the adjusting portion is used for adjusting the position of the sliding seat plate (5), and the positioning portion is used for fixing the position of the sliding seat plate (5).
2. The adjustable transformer neutral point gap protection device according to claim 1, wherein the base comprises two parallel U-shaped plates (8), and the two limiting grooves (7) are respectively fixedly installed at the top ends of the two U-shaped plates (8); the adjusting part comprises a threaded hole plate (9), two ends of the threaded hole plate (9) are respectively fixedly connected with the U-shaped plate (8), a screw rod (10) is connected to the inner thread of a threaded hole of the threaded hole plate (9), a fixing plate (11) is connected to one end of the screw rod (10) in a rotating mode, and the fixing plate (11) is fixedly connected to the bottom end of the sliding seat plate (5).
3. The device for protecting the gap between the neutral points of the transformer as claimed in claim 2, wherein said positioning portion comprises positioning blocks (12) respectively disposed in two said U-shaped plates (8), a first connecting rod (13) is hinged to one side of said positioning blocks (12) far away from said U-shaped plates (8), and the end of said first connecting rod (13) is hinged to said fixing plate (11); the U-shaped plate is characterized in that a horizontal long hole (14) is formed in the side wall of the U-shaped plate (8), a connecting bolt (15) is arranged in the horizontal long hole (14), a threaded hole is formed in one side, close to the U-shaped plate (8), of the positioning block (12), and the positioning block (12) is fixedly matched with the U-shaped plate (8) through the connecting bolt (15) and the threaded hole.
4. The device for protecting the gap between the neutral points of the adjustable transformer according to claim 3, wherein a positioning plate (16) is arranged between the two U-shaped plates (8), two ends of the top of the positioning plate (16) are respectively connected with the top ends of the two U-shaped plates (8) in a sliding manner, and the positioning plate (16) is sleeved on the screw rod (10) in a sliding manner; a second connecting rod (17) is hinged to one side, away from the U-shaped plate (8), of the positioning block (12), the length of the second connecting rod (17) is the same as that of the first connecting rod (13), and the tail end of the second connecting rod (17) is hinged to the positioning plate (16); the top end of the U-shaped plate (8) is provided with a fixing piece, and the positioning plate (16) is fixedly matched with the U-shaped plate (8) through the fixing piece.
5. The adjustable transformer neutral point gap protection device according to claim 4, wherein a through hole is formed in the positioning plate (16), a sliding sleeve (18) is fixedly connected in the through hole, the sliding sleeve (18) is sleeved on the screw rod (10), and a gap is formed between the sliding sleeve (18) and the screw rod (10).
6. The adjustable transformer neutral point gap protection device according to claim 4, wherein the fixing member comprises a slide rail (19) fixedly connected to the U-shaped plate (8), an L-shaped fixing block (20) is slidably connected to the slide rail (19) at an upper limit position, a vertical threaded hole is formed in the L-shaped fixing block (20), a fastening bolt (21) is connected to the vertical threaded hole in an internal thread manner, and the bottom end of the fastening bolt (21) abuts against the top end of the positioning plate (16).
7. The adjustable transformer neutral point gap protection device according to claim 1, wherein a horizontal gap rod (41) is detachably mounted on one side, close to the current transformer (3), of the top of the lightning arrester (2), a mounting sleeve (42) is fixedly mounted on the top of the current transformer (3), a locking threaded sleeve (43) is connected to the outer wall of the top of the mounting sleeve (42) in a threaded manner, a right-angle gap rod (44) is detachably connected to the mounting sleeve (42) through the locking threaded sleeve (43), a gap ball (45) is detachably mounted at one end, opposite to the horizontal gap rod (41) and the right-angle gap rod (44), of each horizontal gap rod and the corresponding end of the right-angle gap rod (44), and a gap between the two gap balls (45) is the protection gap (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223017850.1U CN218733212U (en) | 2022-11-14 | 2022-11-14 | Adjustable transformer neutral point gap protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223017850.1U CN218733212U (en) | 2022-11-14 | 2022-11-14 | Adjustable transformer neutral point gap protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218733212U true CN218733212U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223017850.1U Active CN218733212U (en) | 2022-11-14 | 2022-11-14 | Adjustable transformer neutral point gap protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218733212U (en) |
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2022
- 2022-11-14 CN CN202223017850.1U patent/CN218733212U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An adjustable neutral gap protection device for transformers Granted publication date: 20230324 Pledgee: Agricultural Bank of China Limited Baoding Gaokai District Branch Pledgor: BAODING JIAFENG ELECTRIC CO.,LTD. Registration number: Y2024980020881 |