Optical fiber fixing structure and transformer

Abstract

The utility model belongs to the technical field of transformers, and discloses an optical fiber fixing structure and a transformer. The optical fiber fixing structure comprises N first optical fiber limiting pieces, N is a positive integer, one end of each first optical fiber limiting piece is provided with a first check block and a second check block at intervals in the first direction, the other end of each first optical fiber limiting piece is provided with a third check block, and a first wire concentration groove is formed between each first check block and the corresponding second check block; a second line concentration groove is formed between the third stop block and the first stop block and between the third stop block and the second stop block, the second line concentration groove is communicated with the first line concentration groove, a threading hole is formed in the third stop block, the threading hole is communicated with the second line concentration groove, and the threading hole and the first line concentration groove are coaxially arranged. According to the utility model, the distribution of optical fiber cables can be effectively regulated, and the overall delivery date of the transformer is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an optical fiber fixing structure and a transformer. Background Art

[0002] In power transformers, when the transformer transmits electric energy under working conditions, due to the no-load loss and load loss of the transformer itself, a part of the electric energy is consumed. This part of the electric energy must be converted into heat energy, which increases the temperature of the transformer. In order to ensure the service life of the transformer, the national standard GB1094.2-1996 "Power Transformer Part 2 Temperature Rise" specifies the transformer temperature rise limit in detail. The temperature rise is divided into winding temperature rise and oil surface temperature rise. There are many methods to measure the hot spot temperature of the winding, but the fiber optic temperature measurement method is more widely used. The biggest advantage of the fiber optic temperature measurement method is that it can directly measure any part of the live winding, so the fiber optic temperature measurement method is widely used in power transformers. The outlet head of the optical fiber cable configured for the power transformer is usually installed at the winding outlet position, and the layout and fixing method of the optical fiber cable inside the transformer is a difficult problem in the entire winding optical fiber assembly process.

[0003] At present, there are a large number of fiber optic cables in most transformers. There are 2-5 temperature measurement points in each phase winding. Traditional fiber optic cables are fixed on the winding coils by binding with electrical crepe paper. Not only are the fiber optic cables distributed in a disorderly manner, but the overall delivery time of the transformer is also extended due to the cumbersome operation. Utility Model Content

[0004] The utility model aims to provide an optical fiber fixing structure and a transformer, which can not only effectively regulate the distribution of optical fiber cables, but also shorten the overall delivery period of the transformer.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The optical fiber fixing structure comprises:

[0007] N first optical fiber stoppers, wherein N is a positive integer, a first stopper and a second stopper are provided at one end along a first direction at intervals, a third stopper is provided at the other end of the first optical fiber stopper, a first wire collecting groove is formed between the first stopper and the second stopper, a second wire collecting groove is formed between the third stopper and the first stopper and the second stopper, the second wire collecting groove is communicated with the first wire collecting groove, a wire threading hole is provided in the third stopper, the wire threading hole is communicated with the second wire collecting groove, and the wire threading hole is coaxially arranged with the first wire collecting groove.

[0008] As an optional solution for the optical fiber fixing structure, the two second cable collecting grooves and the first cable collecting groove form a Y-shaped or quasi-Y-shaped cable collecting groove.

[0009] As an optional solution of the optical fiber fixing structure, the first stopper and the second stopper are respectively provided with a first chamfered portion at one end facing the third stopper; and / or

[0010] The third stopper has one end facing the first stopper and the second stopper provided with a second chamfered portion.

[0011] As an optional solution for the optical fiber fixing structure, N is greater than or equal to 2, the N first optical fiber limiting members are arranged along the second direction, and the threading hole of one of two adjacent first optical fiber limiting members is connected to the first cable collecting groove of the other one.

[0012] As an optional solution of the optical fiber fixing structure, the N first optical fiber stoppers are integrally formed; or

[0013] The N first optical fiber stoppers are of separate type.

[0014] As an alternative to the optical fiber fixing structure,

[0015] As an optional scheme for the optical fiber fixing structure, the optical fiber fixing structure also includes a second optical fiber limiting member, one end of the second optical fiber limiting member is provided with a fourth stopper and a fifth stopper spaced apart along the first direction, the other end of the second optical fiber limiting member is provided with a sixth stopper, a third wire collection groove is formed between the fourth stopper and the fifth stopper, a fourth wire collection groove is formed between the sixth stopper, the fourth stopper and the fifth stopper, and the fourth wire collection groove is connected to the third wire collection groove.

[0016] As an optional solution of the optical fiber fixing structure, the second optical fiber stopper and N first optical fiber stoppers are arranged in sequence along the second direction.

[0017] As an optional solution for the optical fiber fixing structure, the fourth stopper and the fifth stopper are respectively provided with a third chamfered portion at one end facing the sixth stopper; and / or

[0018] A fourth chamfered portion is provided at one end of the sixth stopper facing the fourth stopper and the fifth stopper.

[0019] As an optional solution of the optical fiber fixing structure, the optical fiber fixing structure further includes a first cover plate, the first cover plate shields the first cable collection slot and the second cable collection slot; and / or

[0020] The optical fiber fixing structure further includes a second cover plate, and the second cover plate shields the third cable collection slot and the fourth cable collection slot.

[0021] A transformer comprises a winding outlet, a winding coil, an optical fiber cable and an optical fiber fixing structure as described in any one of the above items, wherein the optical fiber fixing structure is arranged on the outer wall surface of the winding coil, one end of the optical fiber cable is arranged at the temperature measuring point of the winding coil, and the other end of the optical fiber cable passes through the second collecting groove and the first collecting groove in sequence and is led out to the winding outlet.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The optical fiber fixing structure provided by the utility model has a first stopper and a second stopper spaced apart at one end of the first optical fiber limiter, a first collection groove is formed between the first stopper and the second stopper, and a stopper as a third stopper is provided at the other end of the first optical fiber limiter, wherein a second collection groove is formed between the third stopper and the first stopper and the second stopper, and the second collection groove is connected to the first collection groove. The outlet ends of the optical fiber cables on the transformer can pass through the second collection groove and then be uniformly led out along the first collection groove. The second collection groove and the first collection groove can play a role in limiting and fixing the optical fiber cables, avoiding the disorderly distribution of the optical fiber cables and shortening the overall delivery time of the transformer. By providing a threading hole in the third stopper, the optical fiber cables located below the first optical fiber limiter can also be led to the first collection groove through the threading hole, and the outlet ends of all optical fiber cables on the transformer are uniformly led out. Since the threading hole and the first collection groove are located on the same axis, the optical fiber cables can be prevented from bending.

[0024] The transformer provided by the utility model can monitor the temperature of the winding coil in real time through the optical fiber cable, and the outlet ends of the optical fiber cable are uniformly led out along the first collecting groove to the winding outlet part through the optical fiber fixing structure, thereby improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the installation of a separate optical fiber fixing structure on a transformer winding coil in an embodiment of the utility model;

[0026] Figure 2 It is a schematic diagram of the installation of an integrated optical fiber fixing structure on a transformer winding coil in an embodiment of the utility model;

[0027] Figure 3 It is an exploded schematic diagram of the first optical fiber stopper and the first cover plate in the embodiment of the utility model;

[0028] Figure 4 is a cross-sectional view of a first optical fiber stopper in an embodiment of the utility model;

[0029] Figure 5 It is a schematic diagram of a structure in which a plurality of first optical fiber stoppers are integrated in an embodiment of the utility model;

[0030] Figure 6 It is a schematic diagram of a structure in which a plurality of first optical fiber stoppers are separated in an embodiment of the utility model;

[0031] Figure 7 It is an exploded schematic diagram of the second optical fiber stopper and the second cover plate in the embodiment of the utility model;

[0032] Figure 8 is a cross-sectional view of a second optical fiber stopper in an embodiment of the utility model;

[0033] Fig. 9 It is a schematic diagram of a structure in which a first optical fiber stopper and a second optical fiber stopper are integrated in one embodiment of the utility model;

[0034] Fig.10 It is a schematic structural diagram of the two first optical fiber stoppers and the second optical fiber stoppers in an embodiment of the utility model as an integrated body.

[0035] In the figure:

[0036] 1. First optical fiber stopper; 2. First cover plate; 3. Second optical fiber stopper; 4. Second cover plate; 5. Optical fiber cable; 6. Winding coil; 7. Winding outlet member;

[0037] 11. first stopper; 12. second stopper; 13. third stopper; 14. first wire collecting slot; 15. second wire collecting slot; 16. threading hole; 17. first chamfered portion; 18. second chamfered portion;

[0038] 31. Fourth stopper; 32. Fifth stopper; 33. Sixth stopper; 34. Third wire collecting slot; 35. Fourth wire collecting slot; 36. Third chamfered portion; 37. Fourth chamfered portion. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] In order to effectively regulate the distribution of optical fiber cables and shorten the overall delivery period of transformers, this embodiment provides an optical fiber fixing structure and a transformer. Figures 1 to 10 The specific contents of this embodiment are described in detail. It should be noted that the first direction mentioned in this embodiment is Figure 4 The X direction in this embodiment is Figure 4 in the Y direction.

[0044] like Figure 3 and Figure 4 As shown, the optical fiber fixing structure in this embodiment includes N first optical fiber stoppers 1, where N is a positive integer. One end of the first optical fiber stopper 1 is provided with a first stopper 11 and a second stopper 12 at intervals along the first direction, and the other end of the first optical fiber stopper 1 is provided with a third stopper 13, a first wire collecting groove 14 is formed between the first stopper 11 and the second stopper 12, a second wire collecting groove 15 is formed between the third stopper 13 and the first stopper 11 and the second stopper 12, the second wire collecting groove 15 is connected to the first wire collecting groove 14, a threading hole 16 is provided in the third stopper 13, the threading hole 16 is connected to the second wire collecting groove 15, and the threading hole 16 is coaxially arranged with the first wire collecting groove 14.

[0045] In short, the optical fiber fixing structure provided in this embodiment has two blocks, namely the first block 11 and the second block 12, arranged at intervals at one end of the first optical fiber stopper 1, a first cable collecting groove 14 is formed between the first block 11 and the second block 12, and a block, namely the third block 13, is arranged at the other end of the first optical fiber stopper 1, wherein the third block 13 and the first block 11 and the second block 12 form a second cable collecting groove 15, and the second cable collecting groove 15 is connected to the first cable collecting groove 14. The outlet ends of the optical fiber cables 5 located on the transformer can pass through the second cable collecting groove 15 and then be uniformly led out along the first cable collecting groove 14. The second cable collecting groove 15 and the first cable collecting groove 14 can limit and fix the optical fiber cables 5, avoid the disorderly distribution of the optical fiber cables 5, and shorten the overall delivery period of the transformer. By providing a threading hole 16 in the third stopper 13, the optical fiber cable 5 located below the first optical fiber stopper can also be led to the first cable collection slot 14 through the threading hole 16, so that the outlet ends of all optical fiber cables 5 on the transformer are uniformly led out. Since the threading hole 16 and the first cable collection slot 14 are located on the same axis, the optical fiber cable 5 can be prevented from bending.

[0046] Exemplarily, the two second cable collection slots 15 and the first cable collection slot 14 form a Y-shaped or quasi-Y-shaped cable collection slot. The optical fiber cable 5 is arranged along the second cable collection slot 15 and the first cable collection slot 14 to avoid 90-degree bending of the optical fiber cable 5, which may cause the fiber core inside the optical fiber cable 5 to break.

[0047] Further, the first stopper 11 and the second stopper 12 are respectively provided with a first chamfered portion 17 at one end facing the third stopper 13, and the third stopper 13 is provided with a second chamfered portion 18 at one end facing the first stopper 11 and the second stopper 12. When the optical fiber cable 5 is arranged along the second cable collection groove 15 and the first cable collection groove 14, by adding the first chamfered portion 17 and the second chamfered portion 18, the first stopper 11, the second stopper 12 and the third stopper 13 can be prevented from scratching the surface of the optical fiber cable 5. Preferably, the first chamfered portion 17 and the second chamfered portion 18 are arc-shaped chamfers.

[0048] Exemplarily, N is greater than or equal to 2, N first optical fiber stoppers 1 are arranged along the second direction, and the threading hole 16 of one of two adjacent first optical fiber stoppers 1 is connected to the first cable collection slot 14 of the other one. Figure 5 As shown, in some application scenarios, by setting multiple first optical fiber stoppers 1 as an integrated structure, not only the processing steps are reduced, but also multiple installations are not required, further shortening the delivery cycle. Figure 6 As shown, in other application scenarios, the N first optical fiber stoppers 1 are separate, and the number of the first optical fiber stoppers 1 is limited according to actual usage, and no excessive restrictions are made here.

[0049] Optionally, the optical fiber fixing structure further includes a first cover plate 2, the first cover plate 2 sealing cover is arranged on the first optical fiber stopper 1, and the first cover plate 2 is used to cover the first cable collection groove 14 and the second cable collection groove 15. By arranging the first cover plate 2 on the first optical fiber stopper 1, the optical fiber cable 5 can be prevented from falling off from the notches of the first cable collection groove 14 and the second cable collection groove 15, thereby ensuring the installation stability of the optical fiber cable 5.

[0050] For example, the depth of the first cable collecting slot 14 and the second cable collecting slot 15 is 5 mm. The width of the slot of the first cable collecting slot 14 is 2 mm to 4 mm, and the thickness of the first cover plate 2 is 0.5 mm.

[0051] Furthermore, if Figure 7 and Figure 8 As shown, the optical fiber fixing structure also includes a second optical fiber stopper 3, one end of the second optical fiber stopper 3 is provided with a fourth stopper 31 and a fifth stopper 32 at intervals along the first direction, the other end of the second optical fiber stopper 3 is provided with a sixth stopper 33, a third cable collection groove 34 is formed between the fourth stopper 31 and the fifth stopper 32, a fourth cable collection groove 35 is formed between the sixth stopper 33 and the fourth stopper 31 and the fifth stopper 32, and the fourth cable collection groove 35 is connected with the third cable collection groove 34. The optical fiber cable 5 located below the first optical fiber stopper 1 can be fixed by the second optical fiber stopper 3. The optical fiber cables 5 below are collected into the fourth cable collection groove 35 along the third cable collection groove 34, and the optical fiber cables 5 in the fourth cable collection groove 35 then pass through the threading hole 16 of the first optical fiber stopper 1 to enter the first cable collection groove 14, so that all optical fiber cables 5 are collected in the first cable collection groove 14 and led out.

[0052] Optionally, the two fourth cable collecting slots 35 and the third cable collecting slot 34 together form a Y-shaped or quasi-Y-shaped cable collecting slot to prevent the optical fiber cable 5 from being bent 90 degrees and breaking the fiber core.

[0053] For example, Fig. 9 and Fig.10 As shown, the second optical fiber stopper 3 and several first optical fiber stoppers 1 are arranged in sequence along the second direction and are an integrated structure connected to each other, and the first collection groove 14, the threading hole 16 and the third collection groove 34 are located on the same axis. In some application scenarios, the second optical fiber stopper 3 and multiple first optical fiber stoppers 1 can be set as a whole, which not only reduces the processing procedures, but also eliminates the need for multiple installations, further shortening the delivery cycle. The number of first optical fiber stoppers 1 is limited according to actual usage, and no excessive restrictions are made here.

[0054] Preferably, the fourth stopper 31 and the fifth stopper 32 are respectively provided with a third chamfer 36 at one end facing the sixth stopper 33; the sixth stopper 33 is provided with a fourth chamfer 37 at one end facing the fourth stopper 31 and the fifth stopper 32. When the optical fiber cable 5 is arranged along the fourth cable collection groove 35 and the third cable collection groove 34, the fourth stopper 31, the fifth stopper 32 and the sixth stopper 33 can be prevented from scratching the surface of the optical fiber cable 5 by adding the third chamfer 36 and the fourth chamfer 37. Preferably, the third chamfer 36 and the fourth chamfer 37 are arc-shaped chamfers.

[0055] Furthermore, the optical fiber fixing structure also includes a second cover plate 4, which is sealed and covered on the second optical fiber stopper 3, and is used to cover the third collection slot 34 and the fourth collection slot 35. By arranging the second cover plate 4 on the second optical fiber stopper 3, the optical fiber cable 5 can be prevented from falling off from the notches of the third collection slot 34 and the fourth collection slot 35, thereby ensuring the installation stability of the optical fiber cable 5.

[0056] In a possible implementation, the first cover plate 2 and the second cover plate 4 may be separate plates, or the first cover plate 2 and the second cover plate 4 may be an integrated plate.

[0057] like Figure 1 and Figure 2 As shown, the present embodiment further provides a transformer, which includes a winding outlet 7, a winding coil 6, an optical fiber cable 5 and the optical fiber fixing structure mentioned above, wherein the optical fiber fixing structure is arranged on the outer wall surface of the winding coil 6, one end of the optical fiber cable 5 is arranged at the temperature measuring point of the winding coil 6, and the other end of the optical fiber cable 5 passes through the second collecting groove 15 and the first collecting groove 14 in sequence and is led out to the winding outlet 7. The temperature of the winding coil 6 can be monitored in real time through the optical fiber cable 5, and the integrated or separated optical fiber fixing structure can make the outlet ends of the optical fiber cable 5 uniformly lead out along the first collecting groove 14 to the winding outlet 7, avoiding the disorderly distribution of the optical fiber cable 5 and improving the installation efficiency.

[0058] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An optical fiber fixing structure, characterized in that: The invention comprises N first optical fiber stoppers (1), wherein N is a positive integer, a first stopper (11) and a second stopper (12) are arranged at intervals along a first direction at one end of the first optical fiber stopper (1), a third stopper (13) is arranged at the other end of the first optical fiber stopper (1), a first wire collecting groove (14) is formed between the first stopper (11) and the second stopper (12), a second wire collecting groove (15) is formed between the third stopper (13) and the first stopper (11) and the second stopper (12), the second wire collecting groove (15) is connected with the first wire collecting groove (14), a wire threading hole (16) is arranged in the third stopper (13), the wire threading hole (16) is connected with the second wire collecting groove (15), and the wire threading hole (16) is coaxially arranged with the first wire collecting groove (14).

2. The optical fiber fixing structure according to claim 1, characterized in that: The second cable collecting slot (15) and the first cable collecting slot (14) form a cable collecting slot with a Y-shaped or quasi-Y-shaped structure.

3. The optical fiber fixing structure according to claim 1, characterized in that: The first stopper (11) and the second stopper (12) are respectively provided with a first chamfered portion (17) at one end facing the third stopper (13); and / or A second chamfered portion (18) is provided at one end of the third stopper (13) facing the first stopper (11) and the second stopper (12).

4. The optical fiber fixing structure according to claim 1, characterized in that: The N is greater than or equal to 2, the N first optical fiber stoppers (1) are arranged along the second direction, and the threading hole (16) of one of two adjacent first optical fiber stoppers (1) is connected to the first cable collection groove (14) of the other one.

5. The optical fiber fixing structure according to claim 4, characterized in that: The N first optical fiber stoppers (1) are integrally formed; or The N first optical fiber stoppers (1) are of separate type.

6. The optical fiber fixing structure according to any one of claims 1 to 5, characterized in that: The optical fiber fixing structure also includes a second optical fiber stopper (3), one end of the second optical fiber stopper (3) is provided with a fourth stopper (31) and a fifth stopper (32) at intervals along the first direction, the other end of the second optical fiber stopper (3) is provided with a sixth stopper (33), a third wire collecting groove (34) is formed between the fourth stopper (31) and the fifth stopper (32), a fourth wire collecting groove (35) is formed between the sixth stopper (33) and the fourth stopper (31) and the fifth stopper (32), and the fourth wire collecting groove (35) is connected to the third wire collecting groove (34).

7. The optical fiber fixing structure according to claim 6, characterized in that: The second optical fiber stopper (3) and the N first optical fiber stoppers (1) are arranged in sequence along the second direction.

8. The optical fiber fixing structure according to claim 6, characterized in that: The fourth stopper (31) and the fifth stopper (32) are respectively provided with a third chamfered portion (36) at one end facing the sixth stopper (33); and / or A fourth chamfered portion (37) is provided at one end of the sixth stopper (33) facing the fourth stopper (31) and the fifth stopper (32).

9. The optical fiber fixing structure according to claim 6, characterized in that: The optical fiber fixing structure further comprises a first cover plate (2), wherein the first cover plate (2) covers the first cable collection slot (14) and the second cable collection slot (15); and / or The optical fiber fixing structure also includes a second cover plate (4), wherein the second cover plate (4) covers the third cable collection slot (34) and the fourth cable collection slot (35).

10. A transformer, characterized in that It comprises a winding outlet piece (7), a winding coil (6), an optical fiber cable (5) and an optical fiber fixing structure as described in any one of claims 1 to 9, wherein the optical fiber fixing structure is arranged on the outer wall surface of the winding coil (6), one end of the optical fiber cable (5) is arranged at the temperature measuring point of the winding coil (6), and the other end of the optical fiber cable (5) passes through the second collecting groove (15) and the first collecting groove (14) in sequence and is led out to the winding outlet piece (7).

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