CN109781270B - Optical fiber temperature measuring probe of transformer - Google Patents
Optical fiber temperature measuring probe of transformer Download PDFInfo
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- CN109781270B CN109781270B CN201910071263.4A CN201910071263A CN109781270B CN 109781270 B CN109781270 B CN 109781270B CN 201910071263 A CN201910071263 A CN 201910071263A CN 109781270 B CN109781270 B CN 109781270B
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Abstract
The invention discloses an optical fiber temperature measuring probe of a transformer, which comprises a bottom shell and a top shell which are mutually buckled, wherein a temperature-sensitive optical fiber is installed in the bottom shell, an external thread part is arranged on the outer side of the bottom shell, an internal thread part which is mutually meshed with the external thread part is arranged on the inner side of the top shell, a capsule layer is wrapped on the surface of the external thread part, and a first extrusion plate is connected with the capsule layer on the top of the external thread part; the top of the internal thread portion is movably connected with a second extrusion plate through a clamping pin, the inner side edge of the second extrusion plate is connected with a sealing ring through an elastic sheet which is obliquely arranged, and the sealing ring is in sealing contact with the bottom shell. The invention can improve the defects of the prior art and improve the sealing effect when the probe adopts a split type assembly structure.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a transformer optical fiber temperature measuring probe.
Background
The transformer generates a large amount of heat during operation, and the temperature of the transformer needs to be controlled within an allowable range in order to ensure the normal operation of the transformer. Due to the special working condition structure of the transformer, the temperature of the transformer is generally monitored by adopting an optical fiber temperature measuring sensor in the prior art. The optical fiber temperature measuring sensor comprises a temperature measuring probe and a signal conversion module. The existing optical fiber temperature measuring probe is usually sealed by one-time packaging in order to ensure the sealing effect, so that if an internal optical fiber device fails, the probe can only be replaced, and the use cost is higher.
Disclosure of Invention
The invention aims to provide a transformer optical fiber temperature measuring probe, which can solve the defects of the prior art and improve the sealing effect when a split type assembly structure is adopted by the probe.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
An optical fiber temperature measuring probe of a transformer comprises a bottom shell and a top shell which are mutually buckled, temperature-sensitive optical fibers are installed in the bottom shell, an external thread part is arranged on the outer side of the bottom shell, an internal thread part meshed with the external thread part is arranged on the inner side of the top shell, a capsule layer is wrapped on the surface of the external thread part, and a first extrusion plate is connected to the capsule layer on the top of the external thread part; the inner wall of the top shell is movably connected with a second extrusion plate through a clamping pin, the inner side edge of the second extrusion plate is connected with a sealing ring through an elastic sheet which is obliquely arranged, the first extrusion plate is in extrusion contact with the second extrusion plate, and the sealing ring is in sealing contact with the bottom shell.
Preferably, the capsule layer is fixed on the tooth top of the external thread part, the elastic pressing sheets are fixed in the capsule layer, the elastic pressing sheets are symmetrically arranged between the elastic pressing sheets on two sides of the tooth top and the tooth top, the oil capsules are located in the capsule layer, the top of the capsule layer is connected with the first extrusion plate through the piston, and the oil capsules are communicated with the piston.
Preferably, the surface of the capsule layer is provided with a convex portion which is in sealing contact with the internal thread portion.
Preferably, the surface of the sealing ring is provided with an annular groove, the bottom of the annular groove is fixed with a connecting sheet, and the inner side wall of the annular groove is fixed with a sealing strip which is in contact with the bottom shell.
Preferably, hard stop blocks are arranged on two sides of the bottom of the sealing strip, and soft stop blocks are connected between the tops of the hard stop blocks and the side walls of the sealing strip.
Preferably, the top and the side of the top shell are provided with a plurality of heat conducting metal sheets.
Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: the invention utilizes the extrusion force in the thread meshing process to extrude the capsule layer through the internal thread part, so that the capsule layer is deformed, the elastic pressing sheet extrudes the oil bag, and the oil enters the piston, thereby pushing the first extrusion plate and the second extrusion plate to extrude. When the second extrusion plate deforms, the sealing ring is driven to be in sealing contact with the bottom shell. Thereby realize on the basis of thread seal, the sealed second grade seal structure of sealing washer. Meanwhile, the extrusion force of the sealing ring is realized through thread engagement, so that the stable maintenance of the extrusion force of the sealing ring can be ensured. In addition, the capsule layer can also perform sealing reinforcement on the threaded engagement part, and the convex part on the surface can further improve the sealing effect of the threaded engagement part. The invention optimizes the structural design of the sealing ring, realizes the deformation of the annular groove by extruding the sealing ring and the bottom shell by arranging the annular groove, and thus, the sealing strip on the inner side wall of the annular groove is contacted with the bottom shell to realize the sealing. Meanwhile, the stop blocks are arranged on two sides of the sealing strip, so that the supporting performance of the sealing strip when the sealing strip is pressed is effectively improved. In order to improve the detection precision of the temperature-sensitive optical fiber in the probe on the external temperature, the temperature difference between the inside and the outside of the probe can be effectively reduced by arranging the heat-conducting metal sheet.
Drawings
FIG. 1 is a block diagram of one embodiment of the present invention.
Fig. 2 is a diagram of the structure of a capsule layer in an embodiment of the present invention.
Fig. 3 is a structural view of a seal ring mounting structure according to an embodiment of the present invention.
FIG. 4 is an axial cross-sectional view of a seal strip in accordance with one embodiment of the present invention.
In the figure: 1. a bottom case; 2. a top shell; 3. a temperature sensitive optical fiber; 4. an external threaded portion; 5. an internal thread portion; 6. a capsule layer; 7. a first squeeze plate; 8. a bayonet 9 and a second extrusion plate; 10. a spring plate; 11. a seal ring; 12. a crest; 13. elastic tabletting; 14. an oil pocket; 15. a piston; 16. a boss portion; 17. an annular groove; 18. connecting sheets; 19. a sealing strip; 20. a hard stop block; 21. a soft stop block; 22. a thermally conductive metal sheet.
Detailed Description
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.
Referring to fig. 1-4, a specific embodiment of the present invention includes a bottom case 1 and a top case 2 which are fastened to each other, a temperature-sensitive optical fiber 3 is installed in the bottom case 1, an external thread portion 4 is provided on an outer side of the bottom case 1, an internal thread portion 5 engaged with the external thread portion 4 is provided on an inner side of the top case 2, a capsule layer 6 is wrapped on a surface of the external thread portion 4, and the capsule layer 6 on a top of the external thread portion 4 is connected to a first pressing plate 7; the inner wall of the top shell 2 is movably connected with a second extrusion plate 9 through a bayonet 8, the inner side edge of the second extrusion plate 9 is connected with a sealing ring 11 through an elastic sheet 10 which is obliquely arranged, the first extrusion plate 7 is in extrusion contact with the second extrusion plate 9, and the sealing ring 11 is in sealing contact with the bottom shell 1. The capsule layer 6 is fixed on the crest 12 of the external thread part 4, the elastic pressing sheets 13 are fixed in the capsule layer 6, the elastic pressing sheets 13 are symmetrically arranged between the elastic pressing sheets 13 on two sides of the crest 12 and the crest 12, the oil capsules 14 are arranged in the capsule layer 6, the top of the capsule layer 6 is connected with the first extrusion plate 7 through the piston 15, and the oil capsules 14 are communicated with the piston 15. The surface of the capsule layer 6 is provided with a convex portion 16 that is in sealing contact with the internal thread portion 5. The surface of the sealing ring 11 is provided with an annular groove 17, the bottom of the annular groove 17 is fixed with a connecting sheet 18, and the inner side wall of the annular groove 17 is fixed with a sealing strip 19 which is contacted with the bottom shell 1. Hard stop blocks 20 are arranged on two sides of the bottom of the sealing strip 19, and soft stop blocks 21 are connected between the tops of the hard stop blocks 20 and the side walls of the sealing strip 19. The top and sides of the top case 2 are provided with a plurality of heat conductive metal sheets 22.
The working principle of the invention is as follows: with drain pan 1 and 2 locks of top shell, rotatory top shell 2 makes external screw thread portion 4 and internal thread portion 5 intermeshing, and internal thread portion 5 extrudees capsule layer 6 at this in-process, and when capsule layer 6 strengthened sealedly to thread engagement, fluid got into the piston, drove first stripper plate 7 extrusion second stripper plate 9, and then under the drive of the elastic deformation of shell fragment 10, sealing washer 11 and drain pan 1 sealing contact realized that the second grade is sealed. When the sealing ring 11 is subjected to extrusion force, the annular groove 17 on the surface of the sealing ring deforms, and the opening angle is increased, so that the sealing strip 19 is in sealing contact with the bottom shell 11.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a transformer optic fibre temperature probe, includes drain pan (1) and top shell (2) of mutual lock, installs temperature sensitive optic fibre (3) in drain pan (1), its characterized in that: an external thread part (4) is arranged on the outer side of the bottom shell (1), an internal thread part (5) meshed with the external thread part (4) is arranged on the inner side of the top shell (2), a capsule layer (6) is wrapped on the surface of the external thread part (4), and the capsule layer (6) on the top of the external thread part (4) is connected with a first extrusion plate (7); the inner wall of the top shell (2) is movably connected with a second extrusion plate (9) through a clamping pin (8), the inner side edge of the second extrusion plate (9) is connected with a sealing ring (11) through an obliquely arranged elastic sheet (10), the first extrusion plate (7) is in extrusion contact with the second extrusion plate (9), and the sealing ring (11) is in sealing contact with the bottom shell (1); the capsule layer (6) is fixed on a tooth top (12) of the external thread part (4), an elastic pressing sheet (13) is fixed in the capsule layer (6), the elastic pressing sheets (13) are symmetrically arranged on two sides of the tooth top (12), an oil capsule (14) is arranged between the elastic pressing sheet (13) and the tooth top (12), the oil capsule (14) is positioned in the capsule layer (6), the top of the capsule layer (6) is connected with a first extrusion plate (7) through a piston (15), and the oil capsule (14) is communicated with the piston (15); an annular groove (17) is formed in the surface of the sealing ring (11), a connecting sheet (18) is fixed at the bottom of the annular groove (17), and a sealing strip (19) which is in contact with the bottom shell (1) is fixed on the inner side wall of the annular groove (17); hard stop blocks (20) are arranged on two sides of the bottom of the sealing strip (19), and soft stop blocks (21) are connected between the top of each hard stop block (20) and the side wall of the sealing strip (19).
2. The transformer optical fiber temperature measurement probe according to claim 1, wherein: the surface of the capsule layer (6) is provided with a bulge (16) which is in sealing contact with the internal thread part (5).
3. The transformer optical fiber temperature measurement probe according to claim 1, wherein: the top and the side of the top shell (2) are provided with a plurality of heat conducting metal sheets (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910071263.4A CN109781270B (en) | 2019-01-25 | 2019-01-25 | Optical fiber temperature measuring probe of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910071263.4A CN109781270B (en) | 2019-01-25 | 2019-01-25 | Optical fiber temperature measuring probe of transformer |
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| Publication Number | Publication Date |
|---|---|
| CN109781270A CN109781270A (en) | 2019-05-21 |
| CN109781270B true CN109781270B (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910071263.4A Active CN109781270B (en) | 2019-01-25 | 2019-01-25 | Optical fiber temperature measuring probe of transformer |
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| CN (1) | CN109781270B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113884192B (en) * | 2021-09-27 | 2022-06-21 | 华北电力大学 | Temperature measuring device for high-temperature solid oxide fuel cell stack |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1550624A (en) * | 1976-06-17 | 1979-08-15 | British Steel Corp | Pipe joints and pipe couplings |
| CN201953991U (en) * | 2011-04-27 | 2011-08-31 | 特瑞斯信力(常州)燃气设备有限公司 | C-shaped sealing ring |
| CN204740093U (en) * | 2015-07-10 | 2015-11-04 | 贵州大学 | Differential pressure sensor probe |
| CN105458800A (en) * | 2016-01-28 | 2016-04-06 | 广西玉林坤达机械制造有限责任公司 | Pneumatic/oil pressure auxiliary support |
| CN207234035U (en) * | 2017-08-21 | 2018-04-13 | 东莞市欧特派橡胶密封科技有限公司 | A kind of shaped seals coil structures |
| CN207486051U (en) * | 2017-11-30 | 2018-06-12 | 武汉保得汽车部件有限公司 | Steering shaft seal closure |
| CN108612849A (en) * | 2018-07-02 | 2018-10-02 | 哈尔滨奥瑞德光电技术有限公司 | A kind of reinforced seal structure of 3D hot-bending machines |
-
2019
- 2019-01-25 CN CN201910071263.4A patent/CN109781270B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1550624A (en) * | 1976-06-17 | 1979-08-15 | British Steel Corp | Pipe joints and pipe couplings |
| CN201953991U (en) * | 2011-04-27 | 2011-08-31 | 特瑞斯信力(常州)燃气设备有限公司 | C-shaped sealing ring |
| CN204740093U (en) * | 2015-07-10 | 2015-11-04 | 贵州大学 | Differential pressure sensor probe |
| CN105458800A (en) * | 2016-01-28 | 2016-04-06 | 广西玉林坤达机械制造有限责任公司 | Pneumatic/oil pressure auxiliary support |
| CN207234035U (en) * | 2017-08-21 | 2018-04-13 | 东莞市欧特派橡胶密封科技有限公司 | A kind of shaped seals coil structures |
| CN207486051U (en) * | 2017-11-30 | 2018-06-12 | 武汉保得汽车部件有限公司 | Steering shaft seal closure |
| CN108612849A (en) * | 2018-07-02 | 2018-10-02 | 哈尔滨奥瑞德光电技术有限公司 | A kind of reinforced seal structure of 3D hot-bending machines |
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| CN109781270A (en) | 2019-05-21 |
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