CN218769061U - Transformer oil surface temperature controller - Google Patents
Transformer oil surface temperature controller Download PDFInfo
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- CN218769061U CN218769061U CN202222525220.9U CN202222525220U CN218769061U CN 218769061 U CN218769061 U CN 218769061U CN 202222525220 U CN202222525220 U CN 202222525220U CN 218769061 U CN218769061 U CN 218769061U
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- thermal bulb
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- fixing block
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Abstract
The utility model belongs to transformer temperature controller field, concretely relates to transformer oil level temperature controller has the effect of sealing up once more at temperature package and mounting hole. The technical scheme comprises the following steps: the device comprises a bump fixing block, a temperature bulb, a heater and sealing wax. The oil immersed transformer is characterized in that the protruding fixing block is annular and protruding, the protruding fixing block is arranged on the upper portion of the oil immersed transformer, the through hole of the protruding fixing block and the mounting hole are concentric, and an annular groove is formed in the upper end face of the protruding fixing block. The thermal bulb comprises a thermal bulb end and a temperature sensing head; the lower end of the thermal bulb end is provided with a temperature sensing head, the temperature sensing head penetrates through the inner ring of the protruding fixing block and the mounting hole and is arranged in the oil-immersed transformer, and the lower end face of the thermal bulb end is attached to the upper end face of the protruding fixing block. The heater is of an annular structure and is fixed on the lower end face of the end of the thermal bulb, and the heater is arranged in the annular groove. And sealing wax is filled in the annular groove.
Description
Technical Field
The utility model belongs to transformer temperature controller field, concretely relates to transformer oil level temperature controller.
Background
The oil-immersed transformer temperature controller is a measuring instrument for measuring the oil temperature of a transformer in a power transformer. The upper part of the partial oil-immersed transformer is provided with a mounting hole of a temperature bulb of the temperature controller, and generally speaking, the temperature bulb and the mounting hole can be sealed. However, after the inspection, complete sealing between the thermal bulb and the mounting hole is often not achieved. After long-time operation, the situation of water vapor infiltration can be caused, so that oil inside the transformer seeps out under high pressure, and the temperature measurement of the temperature bulb is inaccurate.
Part oil-immersed transformer adopts the lock to close the lid, carries out the rainwater with bulb and mounting hole hookup location department and shelters from, but, transformer after the maintenance still has the problem that the inside oil of transformer oozes.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a transformer oil level temperature controller has and carries out sealed effect once more at temperature package and mounting hole.
In order to realize the technical purpose, the utility model provides a transformer oil level temperature controller. The transformer oil surface temperature controller is arranged on the oil-immersed transformer, and the upper part of the oil-immersed transformer is provided with a mounting hole;
wherein, the transformer oil level temperature controller includes: the device comprises a convex fixing block, a temperature bulb, a heater and sealing wax. The oil immersed transformer is characterized in that the protruding fixed block is annular protruding, the protruding fixed block is arranged on the upper portion of the oil immersed transformer, the through hole of the protruding fixed block and the mounting hole are concentric, and an annular groove is formed in the upper end face of the protruding fixed block. The thermal bulb comprises a thermal bulb end and a temperature sensing head; the lower end of the thermal bulb end is provided with a temperature sensing head, the temperature sensing head penetrates through the inner ring of the protruding fixing block and the mounting hole and is arranged in the oil-immersed transformer, and the lower end face of the thermal bulb end is attached to the upper end face of the protruding fixing block. The heater is of an annular structure and is fixed on the lower end face of the end of the thermal bulb, and the heater is arranged in the annular groove. And sealing wax is filled in the annular groove.
Preferably, the heater comprises a ring-shaped heating wire and an insulating sleeve sleeved outside the ring-shaped heating wire; the two ends of the annular heating wire pass through the interior of the thermal bulb end and extend to the outer side from the upper end face of the thermal bulb end.
Preferably, a fastening surface is arranged on the lower end surface of the thermal bulb end which is positioned right above the annular groove; the fastening face includes a plurality of protrusions and depressions.
Preferably, the thermal bulb further comprises an annular edge, the annular edge is fixed to the lower end of the thermal bulb, and the annular edge is sleeved on the outer side of the protruding fixing block.
Preferably, the outer diameter of the insulating sleeve is smaller than the length and width of the upper structure of the vertical section of the annular groove.
Preferably, the transformer oil level temperature controller further comprises a direct current power supply, and the direct current power supply is electrically connected with the annular heating wire to form a closed loop.
Preferably, the voltage of the direct current power supply is less than 24V.
Preferably, the mounting hole is provided with an internal thread; the temperature bulb further comprises a threaded pipe, the threaded pipe is sleeved on the temperature sensing head and is fixedly connected with the lower end face of the end of the temperature bulb, and the threaded pipe is arranged in the mounting hole.
Compared with the prior art, the utility model following beneficial effect has:
first, the utility model discloses an annular groove, bulb end and sealed wax can be with sealed wax cooling in order to form sealedly after the melting in the annular groove, realize appearing sealed when not tight in bulb and mounting hole, protruding fixed block and bulb end form sealedly, avoid appearing the phenomenon of the oil seepage of transformer and appear.
Second, the utility model discloses a mounting hole adopts the internal thread, and the bulb includes the screwed pipe, can realize that protruding fixed block is fixed mutually with the bulb end, avoids sealed wax to produce the gap because of relative displacement, causes the phenomenon appearance of the oil seepage of transformer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 inventive exercise.
FIG. 1 is a block diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1 according to the present invention;
fig. 3 is a structural diagram of the protruding fixing block provided by the present invention;
fig. 4 is a structural diagram of the thermal bulb end provided by the present invention;
FIG. 5 is a block diagram of another embodiment provided by the present invention;
fig. 6 is another structural diagram of the end of the thermal bulb provided by the present invention;
fig. 7 is a structural diagram of another embodiment provided by the present invention.
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 the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly and encompass, for example, a fixed connection, a releasable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Some embodiments of the utility model provide a transformer oil level temperature controller. As shown in fig. 1 and 2, the transformer oil level temperature controller is disposed on the oil-immersed transformer 5, and a mounting hole 51 is disposed at an upper portion of the oil-immersed transformer 5.
Wherein, the transformer oil level temperature controller includes: the device comprises a bump fixing block 1, a bulb 2, a heater 3 and sealing wax 4. The oil immersed transformer is characterized in that the protruding fixed block 1 is annular protruding, the protruding fixed block 1 is arranged on the upper portion of the oil immersed transformer 5, the through hole of the protruding fixed block 1 and the mounting hole are concentric, and an annular groove 11 is formed in the upper end face of the protruding fixed block 1. The thermal bulb 2 comprises a thermal bulb end 21 and a temperature sensing head 22; the lower end of the thermal bulb end 21 is provided with a temperature sensing head 22, the temperature sensing head 22 penetrates through the inner ring of the protruding fixed block 1 and the mounting hole 51 and is arranged in the oil-immersed transformer 5, and the lower end face of the thermal bulb end 21 is attached to the upper end face of the protruding fixed block 1. The heater 3 is of an annular structure and is fixed on the lower end face of the bulb end 21, and the heater 3 is arranged in the annular groove 11. The annular groove 11 is filled with sealing wax 4.
In some embodiments, as shown in fig. 3, the fixed protrusion block 1 may be a tubular structure, the wall thickness may be the same as the inner diameter of the fixed protrusion block 1, an annular groove 11 is provided on the upper end surface of the fixed protrusion block 1, and the cross section of the annular groove 11 on the vertical surface may be a square structure. When the thermal bulb end 21 is arranged on the protruding fixing block 1, the heater 3 is located in the annular groove 11, the sealing wax 4 is filled in the annular groove 11, two ends of the heater 3 are connected with a power supply, the sealing wax 4 is melted through the heater 3, and the sealing wax 4 is in contact with the inner wall of the annular groove 11 and the lower end face of the thermal bulb end 21 to form a sealing interface, so that oil in the oil-immersed transformer 5 can be prevented from seeping out.
In some embodiments, as shown in fig. 1, 2 and 4, the heater 3 includes a ring-shaped heating wire 31 and an insulating sheath 32 sleeved outside the ring-shaped heating wire; two ends of the annular heating wire 31 pass through the interior of the thermal bulb end 21 and extend to the outer side from the upper end face of the thermal bulb end 21.
Illustratively, the insulating sleeve 32 may be ceramic. In order to prevent the annular heating wire from contacting the oil-immersed transformer 5, two ends of the insulating sleeve 32 are sealed with the thermal bulb end 21.
In some embodiments, as shown in fig. 5 and 6, a fastening surface O is provided on the lower end surface of the thermal bulb end 21 directly above the annular groove 11; the fastening surface O includes a plurality of protrusions and depressions.
The projections and depressions can be better in contact with the sealing wax 4, the sealing effect is improved, wherein the projections can be annular projection rings, and the depressions can be annular depressions between two adjacent projection rings.
In some embodiments, as shown in fig. 7, the thermal bulb 2 further comprises an annular edge 23, the annular edge 23 is fixed to the lower end of the thermal bulb end 21, and the annular edge 23 is sleeved on the outer side of the protruding fixing block 1.
The annular edge 23 is used for sleeving the protruding fixing block 1, so that the corrosion of water vapor to the protruding fixing block can be reduced, and the water vapor infiltration is avoided.
In some embodiments, as shown in fig. 1, the outer diameter of the insulating sleeve 32 is smaller than the length L and width H of the upper vertical cross-sectional profile of the annular groove 11. The heater 3 is convenient to arrange in the annular groove 11, the use convenience can be improved, and the melting of the sealing wax 4 is facilitated. It can be understood that when the thermal bulb 2 needs to be disassembled and assembled, the heater 3 needs to be connected with a power supply, the heater 3 melts the sealing wax 4, and the thermal bulb end 21 is quickly disassembled and assembled by the sealing wax 4 in a molten state, so that the thermal bulb end 21 is separated from the protrusion fixing block 1.
In some embodiments, the transformer oil level temperature controller further comprises a direct current power supply, and the direct current power supply is electrically connected with the annular heating wire to form a closed loop.
In some embodiments, the voltage of the dc power supply is less than 24V.
In some embodiments, as shown in fig. 1 and 2, the mounting hole 51 is provided with an internal thread; the thermal bulb 2 further comprises a threaded pipe 24, the threaded pipe 24 is sleeved on the temperature sensing head 22, the threaded pipe 24 is fixedly connected with the lower end face of the thermal bulb end 21, and the threaded pipe 24 is arranged in the mounting hole 51.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (8)
1. The transformer oil surface temperature controller is arranged on the oil-immersed transformer, and the upper part of the oil-immersed transformer is provided with a mounting hole; it is characterized in that the transformer oil level temperature controller comprises:
the oil-immersed transformer mounting structure comprises a protrusion fixing block and an annular protrusion, wherein the protrusion fixing block is arranged at the upper part of the oil-immersed transformer, a through hole of the protrusion fixing block and the mounting hole are concentric, and an annular groove is formed in the upper end face of the protrusion fixing block;
the thermal bulb comprises a thermal bulb end and a temperature sensing head; the lower end of the thermal bulb end is provided with a temperature sensing head, the temperature sensing head penetrates through the inner ring of the protruding fixed block and the mounting hole and is arranged in the oil-immersed transformer, and the lower end face of the thermal bulb end is attached to the upper end face of the protruding fixed block;
the annular structure is fixed on the lower end face of the end head of the thermal bulb, and the heater is arranged in the annular groove;
and sealing wax is filled in the annular groove.
2. The transformer oil level temperature controller according to claim 1, wherein the heater comprises a ring-shaped heating wire and an insulating sleeve sleeved outside the ring-shaped heating wire;
the two ends of the annular heating wire pass through the interior of the thermal bulb end and extend to the outer side from the upper end face of the thermal bulb end.
3. The transformer oil level temperature controller according to claim 2, wherein a fastening surface is provided on a lower end surface of the thermal bulb end located right above the annular groove;
the fastening face includes a plurality of protrusions and depressions.
4. The transformer oil level temperature controller of claim 2 or 3, wherein the thermal bulb further comprises an annular edge, the annular edge is fixed at the lower end of the thermal bulb, and the annular edge is sleeved outside the protruding fixing block.
5. The transformer oil level temperature controller of claim 2 or 3, wherein the outer diameter of the insulating sleeve is smaller than the length and width of the upper shape structure of the vertical section of the annular groove.
6. The transformer oil level temperature controller according to claim 5, further comprising a DC power supply electrically connected to the loop heating wire in a closed loop.
7. The transformer oil level temperature controller of claim 6, wherein the voltage of the DC power supply is less than 24V.
8. The transformer oil level temperature controller of claim 1, 2, 6 or 7, wherein the mounting hole is provided with an internal thread;
the temperature bulb further comprises a threaded pipe, the threaded pipe is sleeved on the temperature sensing head and is fixedly connected with the lower end face of the end of the temperature bulb, and the threaded pipe is arranged in the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222525220.9U CN218769061U (en) | 2022-09-23 | 2022-09-23 | Transformer oil surface temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222525220.9U CN218769061U (en) | 2022-09-23 | 2022-09-23 | Transformer oil surface temperature controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218769061U true CN218769061U (en) | 2023-03-28 |
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ID=85695832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222525220.9U Active CN218769061U (en) | 2022-09-23 | 2022-09-23 | Transformer oil surface temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218769061U (en) |
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2022
- 2022-09-23 CN CN202222525220.9U patent/CN218769061U/en active Active
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