CN211696734U - Temperature on-line monitoring system of railway 27.5kV intelligent cable intermediate head department - Google Patents
Temperature on-line monitoring system of railway 27.5kV intelligent cable intermediate head department Download PDFInfo
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- CN211696734U CN211696734U CN202020456892.7U CN202020456892U CN211696734U CN 211696734 U CN211696734 U CN 211696734U CN 202020456892 U CN202020456892 U CN 202020456892U CN 211696734 U CN211696734 U CN 211696734U
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Abstract
The utility model is suitable for a cable on-line temperature measurement technical field provides a temperature on-line monitoring system of railway 27.5kV intelligent cable intermediate head department, including temperature monitoring system and temperature measurement subassembly, temperature monitoring system includes distributed optical fiber temperature measurement host computer and software analysis platform; the temperature measuring assembly comprises temperature measuring optical fibers and optical fiber fusion welding protection pipes, wherein the temperature measuring optical fibers are led out from copper wire shielding layers at two ends of a middle joint and then are fused with each other at the middle joint, then the joints are protected by the optical fiber fusion welding protection pipes, and finally the fused temperature measuring optical fibers are laid on the copper wire shielding layers continuously; the problem of temperature measurement optic fibre in the inside continuation of intermediate head has been solved to this technique, but the inside temperature of direct perception intermediate head after the butt fusion realizes the accurate temperature measurement to the inside temperature of intermediate head, with present existing leading out optic fibre to fix the mode at the cable outer jacket and compare, the temperature measurement is more accurate, and external disturbance is little.
Description
Technical Field
The utility model belongs to the technical field of the online temperature measurement of cable, especially, relate to a temperature on-line monitoring system of railway 27.5kV intelligent cable intermediate head department.
Background
The electrified railway is a large and complex integrated system, wherein a traction power supply system provides traction power for the whole system, and the 27.5kV cable of the electrified railway is commonly used as a feeder line of the power supply system, and the operation state of the electrified railway is one of the main factors influencing the safe operation of the railway system.
The cable intermediate joint is a device which is arranged between cables to form a continuous circuit, and actual operation experience and theoretical analysis show that the cable intermediate joint has more faults and is the weakest link in a cable line. According to the railway 27.5kV intelligent cable, optical fibers are arranged in the cable, wherein whether the connection at the middle joint is reliable or not directly influences the temperature monitoring of the whole cable, the temperature measuring optical fibers are bound outside the middle joint at present, the temperature measuring optical fibers are located on the outer protection layer of the cable, the influence of the environmental temperature is obvious, and the temperature measuring error is large.
SUMMERY OF THE UTILITY MODEL
The utility model provides a temperature on-line monitoring system of railway 27.5kV intelligent cable intermediate head department aims at solving the outside ligature temperature measurement optic fibre's of intermediate head technique that adopts at present, and temperature measurement optic fibre is located the cable outer jacket, receives ambient temperature to influence obviously, the great problem of temperature measurement error.
The utility model is realized in such a way, the temperature on-line monitoring system at the middle joint of the railway 27.5kV intelligent cable comprises a joint component and a monitoring component;
the connector assembly comprises two outer sheaths, an intermediate connector is fixedly connected between the two outer sheaths, the inner cavities of the two outer sheaths are sleeved with a belting layer, the inner cavity of the belting layer is sleeved with a copper wire shielding layer, the inner cavity of the copper wire shielding layer is sleeved with an insulating shielding layer, the inner cavity of the insulating shielding layer is sleeved with a conductor shielding layer, the inner cavity of the conductor shielding layer is sleeved with a plurality of strands of copper wires, and a conductor connecting pipe is fixedly connected between the two strands of copper wires;
the monitoring assembly comprises temperature measuring optical fibers, the temperature measuring optical fibers are located on the copper wire shielding layer between the belting layer and the insulating shielding layer, the opposite sides of the two temperature measuring optical fibers are fixedly connected, the temperature measuring optical fibers are electrically connected with a distributed optical fiber temperature measuring host, and the distributed optical fiber temperature measuring host is electrically connected with a monitoring host.
Preferably, the outer side of the temperature measuring optical fiber is sleeved with a stainless steel protection tube.
Preferably, the two temperature measuring optical fibers are fixed in a fusion mode.
Preferably, the outer side of the joint of the two temperature measuring optical fibers is sleeved with an optical fiber protective sleeve
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a temperature on-line monitoring system of kV intelligent cable intermediate head department, through the mutual butt fusion of temperature measurement optic fibre with both ends cable after drawing forth from the stainless steel protection tube, and lay the temperature measurement optic fibre that the butt fusion is good on the copper wire shielding layer, pass through the conductor connecting pipe with the inside stranded copper conductor of two cables again and connect fixedly, and fixed intermediate head between two oversheath, the technique of the outside ligature temperature measurement optic fibre of common intermediate head has been avoided, the unable accurate temperature measurement of intermediate head and real-time supervision's that causes problem.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic block diagram of the present invention;
fig. 3 is a side sectional view of the structure of the present invention.
In the figure: the temperature measurement device comprises a connector component 1, an outer sheath 11, a wrapping tape layer 12, a copper wire shielding layer 13, a conductor shielding layer 14, a copper wire 15, a plurality of strands, a conductor connecting pipe 16, an intermediate connector 17, an insulating shielding layer 18, a monitoring component 2, a stainless steel protection pipe 21, a temperature measurement optical fiber 22, an optical fiber protection sleeve 23, a distributed optical fiber temperature measurement host 24 and a monitoring host 25.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a technical solution: a temperature on-line monitoring system at a middle joint of a railway 27.5kV intelligent cable comprises a joint component 1 and a monitoring component 2;
the connector assembly 1 comprises two outer sheaths 11, an intermediate connector 17 is fixedly connected between the two outer sheaths 11, the inner cavities of the two outer sheaths 11 are sleeved with belting layers 12, the inner cavity of the belting layer 12 is sleeved with a copper wire shielding layer 13, the inner cavity of the copper wire shielding layer 13 is sleeved with an insulating shielding layer 18, the inner cavity of the insulating shielding layer 18 is sleeved with a conductor shielding layer 14, the inner cavity of the conductor shielding layer 14 is sleeved with a plurality of strands of copper wires 15, and a conductor connecting pipe 16 is fixedly connected between the two plurality of strands of copper wires 15;
the monitoring component 2 comprises temperature measuring optical fibers 22, the temperature measuring optical fibers 22 are positioned on the copper wire shielding layer 13 between the belting layer 12 and the insulation shielding layer 18, the opposite sides of the two temperature measuring optical fibers 22 are fixedly connected, the temperature measuring optical fibers 22 are electrically connected with a distributed optical fiber temperature measuring host 24, and the distributed optical fiber temperature measuring host 24 is electrically connected with a monitoring host 25.
In the embodiment, the corresponding stranded copper wires 15 in the two cables are connected and fixed, the temperature measuring optical fibers 22 of the cables at two ends are led out from the copper wire shielding layer 13 and then are mutually welded, the welded temperature measuring optical fibers 22 are laid in the copper wire shielding layer 13, the problem that the common middle joint external binding temperature measuring optical fiber technology cannot accurately measure the temperature of the middle joint is solved, the problem that the temperature measuring optical fibers 22 are connected in the middle joint is solved, the internal temperature of the middle joint can be directly sensed after welding, the accurate temperature measurement of the internal temperature of the middle joint is realized, the temperature measuring optical fibers 22 in the power transmission line are connected with a group of distributed optical fiber temperature measuring host computers 24, the distributed optical fiber temperature measuring host computers 24 are connected with the monitoring host computers 25, the temperature detected by the temperature measuring optical fibers 22 in the cables can be transmitted to the distributed optical fiber temperature measuring host computers 24 in real time and then transmitted to the monitoring host computers 25 by the, so as to realize the real-time monitoring of the temperature of the whole power transmission line.
Furthermore, the outer side of the temperature measuring optical fiber 22 is sleeved with a stainless steel protection tube 21.
In the present embodiment, the temperature measuring optical fiber 22 can be effectively protected by fitting the stainless steel protection tube 21 to the outside of the temperature measuring optical fiber 22
Further, an optical fiber protective sleeve 23 is sleeved outside the joint of the two temperature measuring optical fibers 22
In this embodiment, the optical fiber protective sleeve 23 is sleeved outside the joint of the two temperature measuring optical fibers 22, so that the joint of the two temperature measuring optical fibers 22 can be effectively protected.
The utility model discloses a theory of operation and use flow: the end part of the outer sheath 11 is removed from the copper wire shielding layer 13, the temperature measuring optical fiber 22 is led out to the rear part of the cable and is temporarily fixed, then the cable is stripped, the multiple copper wires 15 are pressed and connected, the connection and the main insulation of the multiple copper wires 15 are recovered, then the temperature measuring optical fiber 22 is connected and laid on the copper wire shielding layer 13, after the contact of the temperature measuring optical fiber 22 is completed, the temperature measuring unit is debugged and checked, the cable wrapping layer 12 and the outer sheath 11 are sequentially recovered after confirmation, and the whole middle joint installation is completed.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. The utility model provides a temperature on-line monitoring system of railway 27.5kV intelligent cable intermediate head department which characterized in that: comprises a joint component (1) and a monitoring component (2);
the connector assembly (1) comprises two outer sheaths (11), an intermediate connector (17) is fixedly connected between the two outer sheaths (11), inner cavities of the two outer sheaths (11) are sleeved with wrapping tape layers (12), inner cavities of the wrapping tape layers (12) are sleeved with copper wire shielding layers (13), inner cavities of the copper wire shielding layers (13) are sleeved with insulation shielding layers (18), inner cavities of the insulation shielding layers (18) are sleeved with conductor shielding layers (14), inner cavities of the conductor shielding layers (14) are sleeved with multi-strand copper wires (15), and conductor connecting pipes (16) are fixedly connected between the two multi-strand copper wires (15);
the monitoring assembly (2) comprises temperature measuring optical fibers (22), the temperature measuring optical fibers (22) are located on a copper wire shielding layer (13) between the belting layer (12) and the insulation shielding layer (18), opposite sides of the two temperature measuring optical fibers (22) are fixedly connected, the temperature measuring optical fibers (22) are electrically connected with a distributed optical fiber temperature measuring host (24), and the distributed optical fiber temperature measuring host (24) is electrically connected with a monitoring host (25).
2. The on-line temperature monitoring system at the middle joint of the railway 27.5kV intelligent cable as claimed in claim 1, wherein a stainless steel protection tube (21) is sleeved on the outer side of the temperature measuring optical fiber (22).
3. The on-line temperature monitoring system for the intermediate joint of the railway 27.5kV intelligent cable as claimed in claim 2, wherein: the two temperature measuring optical fibers (22) are welded and fixed.
4. The on-line temperature monitoring system for the intermediate joint of the railway 27.5kV intelligent cable as claimed in claim 1, wherein: and an optical fiber protective sleeve (23) is sleeved on the outer side of the joint of the two temperature measuring optical fibers (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020456892.7U CN211696734U (en) | 2020-04-01 | 2020-04-01 | Temperature on-line monitoring system of railway 27.5kV intelligent cable intermediate head department |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020456892.7U CN211696734U (en) | 2020-04-01 | 2020-04-01 | Temperature on-line monitoring system of railway 27.5kV intelligent cable intermediate head department |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211696734U true CN211696734U (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020456892.7U Active CN211696734U (en) | 2020-04-01 | 2020-04-01 | Temperature on-line monitoring system of railway 27.5kV intelligent cable intermediate head department |
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| Country | Link |
|---|---|
| CN (1) | CN211696734U (en) |
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2020
- 2020-04-01 CN CN202020456892.7U patent/CN211696734U/en active Active
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