CN217560827U - Cable head temperature measuring device - Google Patents
Cable head temperature measuring device Download PDFInfo
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- CN217560827U CN217560827U CN202220386990.7U CN202220386990U CN217560827U CN 217560827 U CN217560827 U CN 217560827U CN 202220386990 U CN202220386990 U CN 202220386990U CN 217560827 U CN217560827 U CN 217560827U
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- optical fiber
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Abstract
The utility model discloses a cable head temperature measuring device, which comprises an optical fiber sleeve and a clamping mechanism; optical fiber sheathing: the left end of the temperature measuring head is provided with a cable embedding inlet, the left side surface of the temperature measuring head is provided with a cable embedding inlet, the center of the inside of the optical fiber sleeve is provided with a temperature measuring optical fiber, and the left end of the temperature measuring optical fiber extends to the inside of the cable embedding inlet and is flush with the inner arc wall of the cable embedding inlet in a matching way; a clamping mechanism: the clamping piece is rotatably connected with the inside of the containing opening through a pin shaft, and the first spring is arranged between the clamping piece and the opposite inner side face of the containing opening; this cable head temperature measuring device can be fixed with the cable head centre gripping of different diameters to follow-up temperature measurement in-process cable head emergence offset, overall structure leakproofness is better, can effectively prevent conducting medium such as outside rainwater or dust to get into and influence the device's insulating nature, and then ensures the device's the temperature measurement degree of accuracy.
Description
Technical Field
The utility model relates to a distribution engineering technical field specifically is a cable head temperature measuring device.
Background
The ring main unit is a group of electric equipment which is arranged in a metal or non-metal insulating cabinet body or is made into an assembled interval ring main unit, and the core part of the ring main unit adopts a load switch and a fuse, so that the ring main unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like. The transformer substation is widely applied to distribution stations and box-type substations of load centers of urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like.
The cable head is used as a weak link for safe and reliable operation of the ring main unit, the performance quality of the cable head not only depends on the material of the cable head, but also depends on the manufacturing process of the cable head, the site construction control is realized, and the real-time load is related to the real-time load. Any of the above factors may cause the cable head in the ring main unit to generate heat, if the condition is not found in time, the load is continuously increased, the temperature of the cable head will rise until the explosion is caused, even the insulating sleeve in the ring main unit is cracked, the whole ring main unit is cracked, and therefore the real-time temperature of the cable head needs to be accurately monitored.
The existing cable head temperature measuring device can only measure the surface temperature of a cable head generally, a temperature measuring element cannot go deep into the cable head to measure the temperature of a heating point of an inner core of the cable head, the final measurement precision cannot be guaranteed, even if a small part of the temperature measuring device capable of completing the work exists, an external conductive medium is often led to enter due to poor sealing performance, the insulativity and the temperature measuring accuracy of the device are further affected, and therefore the cable head temperature measuring device is provided.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a cable head temperature measuring device, can be fixed with the cable head centre gripping of different diameters to follow-up temperature measurement in-process cable head takes place the offset, and overall structure leakproofness is better, can effectively prevent conductive medium such as outside rainwater or dust to get into and influence the device's insulating nature, and then ensures the device's temperature measurement degree of accuracy, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a cable head temperature measuring device comprises an optical fiber sleeve and a clamping mechanism;
optical fiber sheathing: the left end of the temperature measuring head is provided with a temperature measuring head, the left side surface of the temperature measuring head is provided with a cable embedding port, the center of the inside of the optical fiber sleeve is provided with a temperature measuring optical fiber, and the left end of the temperature measuring optical fiber extends to the inside of the cable embedding port and is flush with the inner arc wall of the cable embedding port;
a clamping mechanism: including containing port, clamping piece and first spring, the containing port evenly sets up in the cable inlays the interior arc wall left end of entry, and the inside of containing port all is connected with the clamping piece through the round pin axle rotation, is equipped with first spring between the relative medial surface of containing port at clamping piece and place, can be fixed with the cable head centre gripping of different diameters to follow-up temperature measurement in-process cable head emergence offset, overall structure leakproofness is better, can effectively prevent conducting medium such as outside rainwater or dust to get into and influence the device's insulating nature, and then ensure the device's the temperature measurement degree of accuracy.
Furthermore, the clamping piece is a polyimide resin clamping piece, and the normal development of subsequent temperature measurement work can be ensured through the high temperature resistance and the insulating property of the polyimide resin.
Furthermore, the outside activity cover of optic fibre cover is equipped with free cover, and the right flank of free cover is equipped with annular internal thread groove, can realize fixed the installation of device.
Furthermore, the sealing sheet is transversely connected to the inside of the annular inner thread groove in a sliding mode, and the second springs which are uniformly distributed are arranged between the left side face of the sealing sheet and the inner wall of the left side of the annular inner thread groove, so that the sealing performance of the device can be guaranteed, and the phenomenon that the insulation performance of the device is affected due to the fact that external rainwater, dust and other conducting media enter the device is avoided.
Furthermore, the sealing rings are arranged in the inner annular hoop groove and the outer annular hoop groove which are formed in the right side face of the free cover, and gaps between the free cover and the sealing plug of the external cable head can be plugged.
Further, the left side middle part of free cover is equipped with dodges the mouth, dodges the inside of mouth and is equipped with the sealing ring, can carry out the shutoff to the gap between free cover and the optic fibre cover, guarantees the device's leakproofness comprehensively.
Furthermore, the diameter of the optical fiber sleeve is larger than the inner diameter of the sealing ring, so that the sealing ring can be always in a cone bucket type tightening state.
Compared with the prior art, the beneficial effects of the utility model are that: this cable head temperature measuring device has following benefit:
1. the cable head temperature measuring device comprises a clamping piece, a first spring, a second spring, a clamping piece and a clamping piece, wherein the first spring is arranged at the bottom of a cable embedding opening, the first spring is arranged at the bottom of the cable embedding opening, the second spring is arranged at the bottom of the cable embedding opening, the first spring is arranged at the bottom of the cable embedding opening, the second spring is arranged at the top of the cable embedding opening, the first spring is arranged at the bottom of the cable embedding opening, the clamping piece is arranged at the bottom of the cable embedding opening, the measuring point part of the cable head is inserted into the inner part of the cable embedding opening, the clamping piece can be preferentially contacted with the measuring point part of the cable head in the process, and the clamping piece can contract towards the accommodating opening by a proper degree under the pressure of the cable head, so that the cable head with different diameters can be used.
2. Personnel will dissociate the annular internal thread groove of covering and external cable head sealing plug threaded connection, finally link together external cable head sealing plug and cable head and can realize the installation fixed to the device, so that the development of follow-up temperature measurement work, under this state, the gasket can remove towards annular internal thread groove because of the thrust effect that receives the second spring, make the gasket and the last connection site in close contact with of external cable head sealing plug, certain compression deformation can take place for the sealing washer because the extrusion that receives dissociative cover and external cable head sealing plug simultaneously, can make self outwards inflation through the elastic potential energy of sealing washer self this moment, so that carry out the shutoff to the gap between dissociative cover and the external cable head sealing plug, ensure the leakproofness of the device, so as to avoid conductive medium such as outside rainwater or dust to get into and influence the insulating nature of the device, because the diameter of optic fibre cover is greater than the internal diameter of sealing ring, the sealing ring can be in the state of tightening with the form of awl all the time, thereby carry out the shutoff to the gap between dissociative cover and the optic fibre cover, comprehensively guarantee the leakproofness of the device.
3. When temperature measurement work is needed, external excitation light guided in by the temperature measurement optical fiber can irradiate on a cable head located inside the temperature measurement head, the excitation light can be guided out to external spectral analysis equipment again through the temperature measurement optical fiber after being reflected by the cable head, and due to the fact that parameters of the excitation light after reflection have one-to-one correspondence with temperature, the real-time temperature of the cable head can be obtained by detecting the intensity or the service life of the excitation light, and therefore the temperature measurement work of the cable head is completed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the inner cross-section structure of the present invention;
FIG. 3 is the schematic diagram of the A-position amplification structure of the present invention
In the figure: 1 optic fibre cover, 2 temperature measuring head, 3 cable inlay mouth, 4 temperature measurement optic fibre, 5 fixture, 51 take in mouthful, 52 clamping pieces, 53 first spring, 6 free cover, 7 annular internal thread groove, 8 gasket, 9 second spring, 10 sealing washers, 11 dodge mouth, 12 sealing rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
Referring to fig. 1-3, the present embodiment provides a technical solution: a cable head temperature measuring device comprises an optical fiber sleeve 1 and a clamping mechanism 5;
an optical fiber sleeve 1: the left end of the temperature measuring head is provided with the temperature measuring head 2, the left side face of the temperature measuring head 2 is provided with the cable embedding port 3, the inner center of the optical fiber sleeve 1 is provided with the temperature measuring optical fiber 4, the left end of the temperature measuring optical fiber 4 extends to the inside of the cable embedding port 3 and is matched and flush with the inner arc wall of the cable embedding port 3, when temperature measuring work is needed, external excitation light guided by the temperature measuring optical fiber 4 can irradiate on the cable head positioned in the temperature measuring head 2, after the excitation light is reflected by the cable head, the excitation light can be guided out again to external spectral analysis equipment by the temperature measuring optical fiber 4, and as the parameters of the reflected excitation light have one-to-one correspondence relation with the temperature, the real-time temperature of the cable head can be obtained by detecting the intensity or the service life of the excitation light, so that the temperature measuring work of the cable head is completed;
the clamping mechanism 5: the cable head temperature measuring device comprises a containing port 51, clamping pieces 52 and a first spring 53, wherein the containing port 51 is uniformly arranged at the left end of an inner arc wall of a cable embedding port 3, the clamping pieces 52 are rotatably connected inside the containing port 51 through pin shafts, the first spring 53 is arranged between the clamping pieces 52 and the inner side surface of the containing port 51, the clamping pieces 52 are polyimide resin clamping pieces, firstly, measuring point parts of cable heads are inserted into the cable embedding port 3, in the process, the clamping pieces 52 can be preferentially contacted with the measuring point parts of the cable heads, meanwhile, the clamping pieces 52 can be compressed to a proper degree towards the containing port 51 by the pressurization of the cable heads, so that the cable heads with different diameters can be used, after the measuring point parts of the cable heads are completely inserted into the cable embedding port 3, the clamping pieces 52 can clamp and fix the cable heads under the influence of the elastic potential energy of the first spring 53, and the influence on the position deviation of the cable heads in the subsequent temperature measuring process on the temperature measuring accuracy is avoided.
Wherein: the outside movable sleeve of optic fibre cover 1 is equipped with free cover 6, and the right flank of free cover 6 is equipped with annular internal thread groove 7, and personnel will free annular internal thread groove 7 and the first sealing plug threaded connection of external cable on the cover 6, finally links together external cable head sealing plug and cable head can realize fixed the installation to the device again to the development of follow-up temperature measurement work.
Wherein: the inside horizontal sliding connection of annular internal thread groove 7 has sealing piece 8, be equipped with evenly distributed's second spring 9 between the left surface of sealing piece 8 and the left side inner wall of annular internal thread groove 7, sealing piece 8 can move towards annular internal thread groove 7 because of the thrust effect that receives second spring 9 for the sealing piece 8 and the last connection position in close contact with of outside cable head sealing plug ensure the leakproofness of the device, in order to avoid conductive medium such as outside rainwater or dust to get into and influence the insulating nature of the device.
Wherein: all be equipped with sealing washer 10 in two inside and outside annular hoop grooves of free cover 6 right flank setting, certain compression deformation can take place for sealing washer 10 because the extrusion that receives free cover 6 and external cable head sealing plug, and the elastic potential energy through sealing washer 10 self can make self outside inflation this moment to carry out the shutoff to the gap between free cover 6 and the external cable head sealing plug.
Wherein: free cover 6's left surface middle part is equipped with dodges mouthful 11, and the inside of dodging mouthful 11 is equipped with sealing ring 12, and the diameter of optic fibre cover 1 is greater than sealing ring 12's internal diameter, because the diameter of optic fibre cover 1 is greater than sealing ring 12's internal diameter, sealing ring 12 can be in with the form of awl bucket form all the time and tighten the state to carry out the shutoff to free cover 6 and the gap between the optic fibre cover 1, guarantee the device's leakproofness comprehensively.
The utility model provides a pair of cable head temperature measuring device's theory of operation as follows: firstly, a measuring point part of a cable head is inserted into the cable embedding opening 3, in the process, a clamping piece 52 can be preferentially contacted with the measuring point part of the cable head, meanwhile, the clamping piece 52 can be compressed to a proper degree from the cable head to the containing opening 51 by pressurization so as to meet the use requirements of the cable heads with different diameters, after the measuring point part of the cable head is completely inserted into the cable embedding opening 3, the clamping piece 52 can clamp and fix the cable head under the influence of the elastic potential energy of a first spring 53 so as to prevent the cable head from generating position deviation in the subsequent temperature measurement process and influencing the temperature measurement accuracy, then, a person connects an annular inner thread groove 7 on a free cover 6 with an outer cable head sealing plug in a threaded manner, finally, the outer cable head and the cable head are connected together to realize the installation and fixation of the device so as to facilitate the subsequent temperature measurement work, the sealing sheet 8 can move towards the annular inner thread groove 7 under the thrust action of the second spring 9, so that the sealing sheet 8 is in close contact with a connecting part on a sealing plug of an external cable head, meanwhile, the sealing ring 10 can generate certain compression deformation under the extrusion of the free cover 6 and the sealing plug of the external cable head, at the moment, the sealing ring 10 can expand outwards through the elastic potential energy of the sealing ring 10 per se so as to plug a gap between the free cover 6 and the sealing plug of the external cable head and ensure the sealing performance of the device, so that the insulating performance of the device is prevented from being influenced by the entering of external rainwater, dust and other conductive media, because the diameter of the optical fiber sleeve 1 is larger than the inner diameter of the sealing ring 12, the sealing ring 12 is always in a tightening state in a cone bucket shape, the gap between the free cover 6 and the optical fiber sleeve 1 is plugged, the sealing performance of the device is comprehensively ensured, when temperature measurement work is required, the external excitation light guided in by the temperature measuring optical fiber 4 can irradiate on the cable head positioned in the temperature measuring head 2, the excitation light can be guided out again to the external spectral analysis equipment by the temperature measuring optical fiber 4 after being reflected by the cable head, and the real-time temperature of the cable head can be obtained by detecting the intensity or the service life of the excitation light because the excitation light parameters after being reflected have one-to-one correspondence with the temperature, so that the temperature measuring work of the cable head is completed.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a cable head temperature measuring device which characterized in that: comprises an optical fiber sleeve (1) and a clamping mechanism (5);
optical fiber ferrule (1): the left end of the temperature measuring device is provided with a temperature measuring head (2), the left side surface of the temperature measuring head (2) is provided with a cable embedding port (3), the center of the inside of the optical fiber sleeve (1) is provided with a temperature measuring optical fiber (4), and the left end of the temperature measuring optical fiber (4) extends to the inside of the cable embedding port (3) and is flush with the inner arc wall of the cable embedding port (3) in a matching way;
clamping mechanism (5): including receiving opening (51), clamping piece (52) and first spring (53), receiving opening (51) evenly sets up in the interior arc wall left end of cable embedding mouth (3), and the inside of receiving opening (51) all is connected with clamping piece (52) through the round pin axle rotation, is equipped with first spring (53) between the relative medial surface of receiving opening (51) at clamping piece (52) and place.
2. The cable head temperature measuring device of claim 1, wherein: the clamping piece (52) is a polyimide resin clamping piece.
3. The cable head temperature measuring device of claim 1, wherein: the outside activity cover of optic fibre cover (1) is equipped with free cover (6), and the right flank of free cover (6) is equipped with annular internal thread groove (7).
4. The cable head temperature measuring device of claim 3, wherein: the inner side of the annular inner thread groove (7) is transversely connected with a sealing sheet (8) in a sliding mode, and second springs (9) which are uniformly distributed are arranged between the left side face of the sealing sheet (8) and the inner wall of the left side of the annular inner thread groove (7).
5. The cable head temperature measuring device of claim 3, wherein: sealing rings (10) are arranged in the inner annular hoop groove and the outer annular hoop groove which are arranged on the right side surface of the free cover (6).
6. The cable head temperature measuring device of claim 3, wherein: the middle of the left side face of the free cover (6) is provided with an avoiding opening (11), and a sealing ring (12) is arranged inside the avoiding opening (11).
7. The cable head temperature measuring device of claim 6, wherein: the diameter of the optical fiber sleeve (1) is larger than the inner diameter of the sealing ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220386990.7U CN217560827U (en) | 2022-02-25 | 2022-02-25 | Cable head temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220386990.7U CN217560827U (en) | 2022-02-25 | 2022-02-25 | Cable head temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217560827U true CN217560827U (en) | 2022-10-11 |
Family
ID=83467793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220386990.7U Active CN217560827U (en) | 2022-02-25 | 2022-02-25 | Cable head temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217560827U (en) |
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2022
- 2022-02-25 CN CN202220386990.7U patent/CN217560827U/en active Active
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