CN221551628U - Current transformer protection casing convenient to oil supplementing - Google Patents
Current transformer protection casing convenient to oil supplementing Download PDFInfo
- Publication number
- CN221551628U CN221551628U CN202323445381.8U CN202323445381U CN221551628U CN 221551628 U CN221551628 U CN 221551628U CN 202323445381 U CN202323445381 U CN 202323445381U CN 221551628 U CN221551628 U CN 221551628U
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- CN
- China
- Prior art keywords
- current transformer
- shell
- oil
- cover
- expander
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- 230000001502 supplementing effect Effects 0.000 title claims description 9
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- 230000000007 visual effect Effects 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000013589 supplement Substances 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 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
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model discloses a current transformer protective cover convenient for oil supplement, which comprises a shell covered outside a corrugated expander, wherein an annular plate is sleeved outside the corrugated expander in the shell, telescopic rods with upward telescopic ends are respectively arranged on two sides of the annular plate, support plates which are horizontally arranged are fixed on the telescopic ends of the telescopic rods, movable clamping structures are respectively arranged on the support plates through locking bolts, and the two clamping structures are oppositely arranged; the side wall of the shell is provided with an observation window, the top of the shell is provided with a rain cover, and the top of the rain cover is provided with a ranging sensor.
Description
Technical field:
The utility model relates to the technical field of protective equipment, in particular to a current transformer protective cover convenient for oil supplementing.
The background technology is as follows:
The current transformer can convert high voltage and large current in the alternating current circuit into low voltage and small current in proportion, avoids danger caused by the high voltage and the large current, and supplies the high voltage and the large current to the measuring instrument and the protection device to monitor and measure the running condition of the power equipment; the oil immersed inverted current transformer has the advantages of low cost, good dynamic and thermal stability and the like, and is increasingly applied to power systems.
The oil-immersed inverted current transformer (simply called as the transformer) generally comprises a corrugated expander, a current transformer body, a support and a protective cover, wherein the support is arranged at the bottom of the current transformer body, the corrugated expander is arranged at the top of the current transformer body, the corrugated expander is communicated with the interior of the current transformer body and is filled with transformer oil, the protective cover is arranged on an outer cover of the corrugated expander, and the top end of the current transformer body is connected with a primary wiring terminal; when the oil immersed current transformer runs daily, the oil amount is reduced due to normal consumption, oil sample extraction and oil seepage, and the situation that oil is needed to be replenished exists; before oiling, operators are required to detach the whole protective cover; the transformer lacks oil, the corrugated expander reflecting the oil level is in a contracted state, and the corrugated expander is gradually unfolded along with the oil injection; after oiling is completed, the corrugated expander reflecting the oil level of the transformer can shrink to different degrees due to the influence of negative pressure and oil dead weight when the oiling joint is taken down, so that oil is sprayed out, and in order to avoid the situation, a crane mode is adopted to stabilize the corrugated expander, so that the corrugated expander is in a fully stretched state.
However, the crane occupies a large space, and the wires above the current transformer or adjacent intervals are often required to be stopped together with the bridge crossing wires, so that the production plan is greatly influenced; and the operation personnel disassemble and assemble the protective cover in the high air, so that the operation is complex, time and labor are wasted, and the safety risk is high.
The utility model comprises the following steps:
the utility model aims to provide a current transformer protective cover convenient for oil supplementing.
The utility model is implemented by the following technical scheme: the current transformer protective cover comprises a shell which is arranged outside a corrugated expander in a covering manner, annular plates are sleeved outside the corrugated expander in the shell, telescopic rods with upward telescopic ends are respectively arranged on two sides of the annular plates, a horizontally arranged supporting plate is fixed on the telescopic ends of each telescopic rod, movable clamping structures are respectively arranged on each supporting plate through locking bolts, and the two clamping structures are oppositely arranged; a rain cover is arranged at the top of the shell.
Preferably, the clamping structure comprises a connecting part and an arc-shaped plate, the connecting part is arranged on the supporting plate, a strip-shaped hole is formed in the connecting part in a penetrating mode, and the end portion of the locking bolt sequentially penetrates through the supporting plate and is in threaded connection with a nut through the strip-shaped hole.
Preferably, the rain-proof cover comprises a cylinder body and an arc cover body covering the top of the cylinder body, wherein external threads are arranged at the bottom of the cylinder body, internal threads are arranged at the top of the shell, and the bottom of the cylinder body is in threaded connection with the top of the shell.
Preferably, an observation window is arranged on the side wall of the shell, and the highest position and the lowest position of the corrugated expander are both located in the visible area of the observation window.
Preferably, the observation window comprises a rubber frame and a glass sheet, the rubber frame is embedded on the side wall of the shell, and the glass sheet is installed in the rubber frame through waterproof glue.
Preferably, a ranging sensor is arranged at the top of the rain cover, an audible and visual alarm is arranged on the outer wall of the rain cover, the ranging sensor is electrically connected with a controller, and the controller is electrically connected with the audible and visual alarm.
The utility model has the advantages that: firstly, the telescopic rod is arranged in the shell, the supporting plates are fixed on the telescopic ends of the telescopic rod, the movable clamping structures are arranged on the supporting plates through the locking bolts, firstly, the corrugated expander can be clamped through the mutual approaching of the clamping structures, secondly, the telescopic rod is controlled to extend to enable the supporting plates to ascend so as to drive the clamping structures to ascend, and therefore the corrugated expander is controlled to ascend, the corrugated expander can be in a fully stretched state, oiling is facilitated, the corrugated expander is stabilized in a crane mode, occupied space is small, and wires above the current transformer or adjacent interval bridging wires do not need to be stopped, so that production plans are not affected.
Second, the rain-proof cover is arranged at the top of the shell, the rain-proof cover comprises the barrel and the arc-shaped cover body covered at the top of the barrel, the outer threads are arranged at the bottom of the barrel, the inner threads are arranged at the top of the shell, the bottom of the barrel is in threaded connection with the top of the shell, the disassembly is convenient, the operation is simple, the whole protective cover is not required to be detached, the time and the labor are saved, and the safety risk is reduced.
And thirdly, the utility model is provided with a ranging sensor, the ranging sensor is electrically connected with a controller, the controller is electrically connected with an audible and visual alarm, the ranging sensor is used as a monitoring point to be installed on a rainproof cover, the distance between the corrugated expander and the top of the protective cover is acquired in real time, the acquired distance information is transmitted to the controller, the controller receives a signal, the audible and visual alarm is controlled to alarm, and the oil level in the oil immersed inverted current transformer is monitored in real time.
Description of the drawings:
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the structure of a current transformer body, a corrugated expander and a shield.
Fig. 2 is a longitudinal cross-sectional view of fig. 1.
Fig. 3 is a section A-A of fig. 1.
Fig. 4 is a schematic view showing a state in which the chucking structure clamps the bellows expander.
The components in the drawings are marked as follows: the corrugated expander 1, the oil filling port 1.1, the indication line 1.2, the shell 2, the observation window 2.1, the rubber frame 2.1.1, the glass sheet 2.1.2, the annular plate 3, the support column 4, the telescopic rod 5, the support plate 6, the clamping structure 7, the connecting part 7.1, the strip-shaped hole 7.1.1, the arc-shaped plate 7.2, the locking bolt 8, the nut 9, the rain cover 10, the cylinder 10.1, the arc-shaped cover 10.2, the ranging sensor 11, the controller 12, the audible-visual annunciator 13, the current transformer body 14 and the oil draining port 14.1.
The specific embodiment is as follows:
the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-4, a current transformer protective cover convenient for oil supplementing comprises a shell 2 which is covered outside a corrugated expander 1, wherein the shell 2 plays a role in protection, an oil filling port 1.1 is formed in the top of the corrugated expander 1, the bottom of the corrugated expander 1 is connected with a current transformer body 14, the corrugated expander 1 is communicated with the inside of the current transformer body 14 and is filled with transformer oil, the bottom of the current transformer body 14 is provided with an oil draining port 14.1, an oil draining valve is arranged at the oil draining port 14.1, the oil draining valve is opened, the transformer oil is drained through the oil draining port 14.1, an annular plate 3 is sleeved outside the corrugated expander 1 in the shell 2, a plurality of supporting columns 4 which are vertically arranged are uniformly fixed at the bottom of the annular plate 3 along the circumferential direction, the annular plate 3 is placed in the shell 2 through the supporting columns 4, telescopic rods 5 with upward telescopic ends are respectively arranged at two sides of the annular plate 3, the support plate 6 which is horizontally arranged is fixed on the telescopic end of each telescopic rod 5, the support plate 6 is lifted by the telescopic rod 5, the clamping structures 7 which can move along the length direction are respectively arranged on each support plate 6, the corrugated expander 1 is clamped by the clamping structures 7, the clamping structures 7 comprise a connecting part 7.1 and an arc-shaped plate 7.2, the connecting part 7.1 and the middle part of the arc-shaped plate 7.2 are fixedly connected into a whole, the connecting part 7.1 is arranged on the support plate 6, the connecting part 7.1 is penetrated and provided with a strip-shaped hole 7.1.1 along the length direction, the end part of the locking bolt 8 sequentially penetrates through the support plate 6 and the strip-shaped hole 7.1.1 to be connected with a nut 9 in a threaded manner, the two arc-shaped plates 7.2 are oppositely arranged, the nut 9 is screwed, the clamping structures 7 move relative to the support plate 6, when the arc-shaped plates 7.2 of the two clamping structures 7 are clamped at the trough position of the corrugated expander 1, the nut 9 is screwed, two clamping structures 7 are clamped on the corrugated expander 1;
The top of the shell 2 is provided with a rain cover 10, the rain cover 10 comprises a cylinder 10.1 and an arc-shaped cover body 10.2 covered on the top of the cylinder 10.1, the bottom of the cylinder 10.1 is provided with external threads, the top of the shell 2 is provided with internal threads, the bottom of the cylinder 10.1 is in threaded connection with the top of the shell 2, the rain cover 10 is in threaded connection with the shell 2, the disassembly is convenient, and the arc-shaped cover body 10.2 can enable rainwater to flow down along the surface, so that the water accumulation leakage at the top of the protective cover is avoided, and the operation of a current transformer is influenced;
The top of the arc-shaped cover body 10.2 is provided with a ranging sensor 11, the threaded end of the ranging sensor 11 is in threaded connection with the top of the arc-shaped cover body 10.2, the assembly, disassembly and replacement are convenient, an audible and visual alarm 13 is arranged on the outer wall of the rain-proof cover 10, the ranging sensor 11 is electrically connected with a controller 12, the controller 12 is electrically connected with the audible and visual alarm 13, the ranging sensor 11 is arranged on the rain-proof cover 10 as a monitoring point, the distance between the corrugated expander 1 and the top of the protection cover is acquired in real time, the acquired distance information is transmitted to the controller 12, the controller 12 receives a signal, the audible and visual alarm 13 is controlled to alarm, and the oil level in the corrugated expander 1 (namely the distance between the corrugated expander 1 and the top) is monitored in real time;
The side wall of the shell 2 is provided with an observation window 2.1, the observation window 2.1 comprises a rubber frame 2.1.1 and glass sheets 2.1.2, the side wall of the shell 2 is embedded with the rubber frame 2.1.1, and the glass sheets 2.1.2 are arranged in the rubber frame 2.1.1 through waterproof glue; the peak position of the expander is coated with a circle of indication line 1.2, the indication line 1.2 adopts fluorescent lines, the highest position and the lowest position of the corrugated expander 1 are both positioned in the visible area of the observation window 2.1, when the audible and visual alarm 13 prompts that the oil level of the oil-immersed inverted current transformer is abnormal, an operator ascends to confirm the position of the corrugated expander 1 through the observation window 2.1, and whether oil supplementing is needed is judged;
The working process comprises the following steps: when the current transformer normally operates, the distance measuring sensor 11 collects the distance between the corrugated expander 1 and the top of the protective cover in real time, and when the distance between the corrugated expander 1 and the top of the protective cover is higher or lower than a set range, the distance measuring sensor 11 transmits collected distance information to the controller 12, the controller 12 receives signals, controls the audible and visual alarm 13 to alarm, and prompts operators that the state of the oil-immersed inverted current transformer is abnormal;
The operator ascent confirms the position of the corrugated expander 1 through the observation window 2.1, if the indication line 1.2 is lower than the high-level mark line at the observation window 2.1; first, the rain cover 10 is screwed, and the rain cover 10 is detached from the housing 2; secondly, screwing the nuts 9, controlling the clamping structures 7 to move relative to the supporting plate 6, enabling the arc-shaped plates 7.2 of the two clamping structures 7 to be close to each other, and clamping the arc-shaped plates at the trough position of the corrugated expander 1; then, the nut 9 is screwed down to lock the clamping structure 7 on the supporting plate 6, and at the moment, the two arc-shaped plates 7.2 clamp the corrugated expander 1; finally, the expansion link 5 is controlled to extend, the supporting plate 6 drives the clamping structure 7 to ascend, the clamping structure 7 drives the corrugated expander 1 to ascend, the corrugated expander 1 is in a fully extended state, and an oiling joint is arranged for oiling;
When oiling is completed, firstly, the oiling joint is taken down, and the oiling port 1.1 is sealed; secondly, screwing the nuts 9, and controlling the clamping structures 7 to move relative to the supporting plate 6 so as to enable the arc-shaped plates 7.2 of the two clamping structures 7 to be away from each other; then, the nut 9 is screwed down to lock the clamping structure 7 on the supporting plate 6, and at this time, the two arc plates 7.2 are far away from the corrugated expander 1; finally, the telescopic rod 5 is controlled to shrink, the supporting plate 6 drives the clamping structure 7 to descend and return to the initial position, the rain cover 10 is installed on the shell 2, the operation is simple, a crane is not needed, the electric wires above the current transformer or adjacent interval bridging wires are avoided to be accompanied and stopped, the whole protective cover is not needed to be detached, time and labor are saved, and the safety risk is reduced; if the indication line 1.2 is higher than the low-level mark line at the observation window 2.1, the oil drain valve is opened to drain the transformer oil.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (6)
1. The current transformer protective cover is characterized by comprising a shell which is covered outside a corrugated expander, wherein an annular plate is sleeved outside the corrugated expander in the shell, telescopic rods with upward telescopic ends are respectively arranged on two sides of the annular plate, a supporting plate which is horizontally arranged is fixed on the telescopic ends of each telescopic rod, a movable clamping structure is respectively arranged on each supporting plate through a locking bolt, and the two clamping structures are oppositely arranged; a rain cover is arranged at the top of the shell.
2. The current transformer protective cover convenient for oil supplementing according to claim 1, wherein the clamping structure comprises a connecting portion and an arc-shaped plate, the connecting portion is arranged on the supporting plate, a strip-shaped hole is formed in the connecting portion in a penetrating mode, and the end portion of the locking bolt sequentially penetrates through the supporting plate and the strip-shaped hole in a threaded mode is connected with a nut.
3. The current transformer protective cover convenient for oil supplementing according to claim 1 or 2, wherein the rain-proof cover comprises a cylinder body and an arc-shaped cover body covered on the top of the cylinder body, the bottom of the cylinder body is provided with external threads, the top of the shell body is provided with internal threads, and the bottom of the cylinder body is in threaded connection with the top of the shell body.
4. A current transformer shield for facilitating oil make-up according to claim 3, wherein an observation window is provided on a side wall of said housing, and both a highest position and a lowest position of said bellows expander are located in a visible region of said observation window.
5. The current transformer shield for facilitating oil replenishment according to claim 4, wherein the observation window comprises a rubber frame and a glass sheet, the rubber frame is embedded on the side wall of the shell, and the glass sheet is installed in the rubber frame through waterproof glue.
6. The current transformer protective cover convenient for oil supplementing according to claim 1, wherein a ranging sensor is arranged at the top of the rain cover, an audible and visual alarm is arranged on the outer wall of the rain cover, the ranging sensor is electrically connected with a controller, and the controller is electrically connected with the audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323445381.8U CN221551628U (en) | 2023-12-15 | 2023-12-15 | Current transformer protection casing convenient to oil supplementing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323445381.8U CN221551628U (en) | 2023-12-15 | 2023-12-15 | Current transformer protection casing convenient to oil supplementing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221551628U true CN221551628U (en) | 2024-08-16 |
Family
ID=92225088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323445381.8U Active CN221551628U (en) | 2023-12-15 | 2023-12-15 | Current transformer protection casing convenient to oil supplementing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221551628U (en) |
-
2023
- 2023-12-15 CN CN202323445381.8U patent/CN221551628U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |