Optical fiber temperature measurement cable conductor
By setting the optical fiber unit in the outermost conduit, the problem of troublesome connection and easy damage of the fiber temperature measurement cable conductor is solved, and efficient and accurate temperature measurement and conductive performance are achieved.
Patent Information
- Application Number
- CN202420020060.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-03
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-03
AI Technical Summary
During the connection between the cable and accessories, the optical fiber cannot be successfully introduced, which is troublesome and the optical fiber is easily damaged, affecting the temperature measurement accuracy and reliability.
The fiber unit is set on the outermost layer, the catheter is built-in optical fiber, the catheter is closely fitted with the conductor unit, and the fiber is moved in the catheter, which is easy to connect and protect, avoid extrusion damage, and achieve accurate temperature measurement.
The connection process between the fiber-optic temperature measurement cable conductor and cable accessories is simplified, the reliability and temperature measurement accuracy of the fiber are improved, the damage rate of the fiber is reduced, the damage of the fiber is avoided, and the conductive performance of the conductor is enhanced.
Smart Images
Figure CN222233342U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power cables, in particular to an optical fiber temperature measuring cable conductor. Background Art
[0002] With the rapid development of society, the urbanization process is accelerating. As an important equipment in urban power grids, the market demand for high-voltage cables has increased dramatically. At present, urban power grids are mainly cable lines. Due to the high load density and rapid growth in urban areas, in some developed cities, the existing power grids can no longer meet the needs of urban development, and it is imperative to increase the transmission capacity of cable lines. To increase the current carrying capacity of cable lines, it is necessary to accurately monitor the temperature of cable conductors in real time.
[0003] The current cable temperature monitoring scheme usually places the optical fiber in the center of the cable conductor. For example, the utility model patent with the authorization announcement number CN205069203U discloses a 500kV cross-linked polyethylene insulated optical fiber temperature measurement power cable, including a conductor and an optical unit assembly, wherein the optical unit is placed in the center of the conductor strand block, and the optical unit assembly is composed of a temperature measurement optical fiber wrapped in a steel loose tube. The above scheme places the temperature measurement optical fiber in the center of the cable, so that the optical temperature measurement optical fiber is better protected in terms of mechanical properties. However, the above scheme has the following shortcomings:
[0004] The cable conductor is composed of multiple conductor cores (conductor strands) twisted together. Since the optical fiber is located in the center of the cable conductor, the optical fiber cannot be smoothly led out during the subsequent connection of the cable and cable accessories. The conductor cores need to be disassembled before the optical fiber can be led out, which is troublesome to operate. Utility Model Content
[0005] The purpose of the utility model is to overcome the above-mentioned problems and provide a fiber optic temperature measuring cable conductor, which can be easily connected to cable accessories, and the optical fiber can be smoothly led out during the connection process, which is simple to operate and can improve the reliability of optical fiber splicing; in addition, the optical fiber of the fiber optic temperature measuring cable conductor can achieve accurate temperature measurement.
[0006] The purpose of the utility model is achieved through the following technical solutions:
[0007] A fiber optic temperature measuring cable conductor comprises a plurality of conductor units and an optical fiber unit; the plurality of conductor units are arranged in layers along the radial direction of the fiber optic temperature measuring cable conductor, and the optical fiber unit is arranged between two adjacent conductor units in the outermost layer; the optical fiber unit comprises a conduit and an optical fiber arranged inside the conduit.
[0008] The working principle of the above-mentioned optical fiber temperature measurement cable conductor is:
[0009] The conductor of the optical fiber temperature measurement cable is formed by twisting and pressing multiple conductor units and an optical fiber unit. The conductor unit is used to transmit electricity. The optical fiber in the optical fiber unit can detect the temperature of the conductor unit in real time. The optical fiber unit is set in the outermost layer. When the optical fiber temperature measurement cable conductor and cable accessories are installed, you only need to directly pull the optical fiber unit out from the outermost conductor unit to achieve the connection of the optical fiber unit. The operation is simple. At the same time, the optical fiber unit is completely free of force during the installation of the cable accessories, and the probability of damage is greatly reduced, which improves the reliability of optical fiber splicing. The optical fiber is built into the conduit, and the conduit can also transmit electricity and protect the optical fiber. When the conductor unit and the optical fiber unit are twisted into a cable, the optical fiber will not be squeezed, which can avoid damage to the optical fiber.
[0010] In a preferred embodiment of the present invention, there is a gap between the outer wall of the optical fiber and the inner wall of the conduit. The purpose is that when the optical fiber is built into the conduit, the optical fiber needs to be passed through the conduit when the optical fiber unit is manufactured. The gap between the outer wall of the optical fiber and the inner wall of the conduit facilitates the movement of the optical fiber inside the conduit, thereby facilitating the threading operation of the optical fiber.
[0011] Preferably, the conductor units of each layer are distributed along the circumferential direction. With the above structure, the structure of the optical fiber temperature measurement cable conductor becomes more compact, and the resistivity of the optical fiber temperature measurement cable conductor is reduced.
[0012] Preferably, a circular conductor is provided at the center position surrounded by the innermost conductor unit; the conductor unit is a fan-shaped conductor unit, and the conduit is a fan-shaped conduit. In the above structure, the circular conductor is also used to transmit electricity, and a circular conductor is provided, and a plurality of conductor units are arranged along the circumferential direction on the outside of the circular conductor and arranged in layers along the radial direction, and the fan-shaped conduit and the fan-shaped conductor unit can be connected more closely, so that the overall filling rate of the optical fiber temperature measurement cable conductor is high, and the width (diameter) of the optical fiber temperature measurement cable conductor can be reduced while meeting the load, thereby reducing the resistivity of the optical fiber temperature measurement cable conductor and reducing the weight per unit length.
[0013] Preferably, the conductor unit, the circular conductor and the conduit are all made of copper, which has good electrical conductivity.
[0014] Preferably, the conductor unit and the conduit are provided with arc surfaces on the inner and outer sides, the arc surface located on the inner side is the inner arc surface, the arc surface located on the outer side is the outer arc surface, the inner arc surface of the innermost conductor unit fits with the outer side of the circular conductor; between two adjacent conductor units, the inner arc surface of the conductor unit located on the outer layer fits with the outer arc surface of the conductor unit located on the inner layer. The purpose is to make each conductor unit fit closely and improve the conductive performance.
[0015] Preferably, the shape of the conduit is the same as that of the outermost conductor unit, and the inner arc surface of the conduit fits the outer arc surface of the conductor unit in the adjacent layer, so as to make the conduit and the conductor unit fit closely and improve the conductivity.
[0016] Preferably, the conductor unit has two layers distributed along the radial direction of the optical fiber temperature measurement cable conductor. By setting two layers, it is ensured that the conductor unit can have a good conductive effect, and the structure of the optical fiber temperature measurement cable conductor can be not too complicated, which is convenient for the production of the optical fiber temperature measurement cable conductor.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] 1. The optical fiber temperature measuring cable conductor in the utility model sets the optical fiber unit in the outermost layer. When the optical fiber temperature measuring cable conductor and the cable accessories are installed, it is only necessary to directly pull the optical fiber unit out from the outermost conductor unit, and the optical fiber unit can be smoothly led out, so that the connection of the optical fiber unit can be realized. The operation is simple. When connecting, the structure of the optical fiber temperature measuring cable conductor hardly needs to be changed, thereby improving the reliability of optical fiber splicing.
[0019] 2. The optical fiber temperature measurement cable conductor and the optical fiber unit of the utility model are completely free of stress during the installation of the cable accessories, so the probability of damage is greatly reduced, thereby improving the reliability of optical fiber splicing.
[0020] 3. In the conductor of the optical fiber temperature measuring cable of the present invention, the optical fiber is built into a conduit, and the conduit can also transmit electricity, act as a conductor, and protect the optical fiber. When the conductor unit and the optical fiber unit are twisted into a cable, the optical fiber will not be squeezed, thereby avoiding damage to the optical fiber.
[0021] 4. The conductor of the optical fiber temperature measuring cable in the present invention, the conduit is in direct contact with the conductor unit, and the optical fiber can accurately measure the temperature of the conductor unit. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a cross-sectional view of the conductor of the optical fiber temperature measurement cable in the present utility model.
[0023] Figure 2 It is a cross-sectional view of the optical fiber unit in the present utility model.
[0024] Figure 3 It is a schematic diagram of the preparation process of the optical fiber unit in the utility model.
[0025] Figure 4 It is a structural schematic diagram of the optical fiber temperature measurement cable conductor and cable accessories in the present invention when installed. DETAILED DESCRIPTION
[0026] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.
[0027] Example 1
[0028] See also Figure 1-Figure 2 This embodiment discloses an optical fiber temperature measuring cable conductor, comprising a plurality of conductor units 1 and an optical fiber unit 2; the plurality of conductor units 1 are arranged in layers along the radial direction of the optical fiber temperature measuring cable conductor, and the optical fiber unit 2 is arranged between two adjacent conductor units 1 in the outermost layer; the optical fiber unit 2 comprises a conduit 2-1 and an optical fiber 2-2 arranged inside the conduit 2-1.
[0029] See also Figure 1-Figure 2 The conduit 2-1 has a lumen, the optical fiber 2-2 is located in the lumen, and the interior of the lumen is the inner wall of the conduit 2-1; there is a gap 3 between the outer wall of the optical fiber 2-2 and the inner wall of the conduit 2-1. The purpose is that the optical fiber 2-2 is built into the conduit 2-1, and when making the optical fiber unit 2, the optical fiber 2-2 needs to pass through the conduit 2-1. There is a gap 3 between the outer wall of the optical fiber 2-2 and the inner wall of the conduit 2-1, which facilitates the movement of the optical fiber 2-2 inside the conduit 2-1, thereby facilitating the threading operation of the optical fiber 2-2; in addition, when the conductor unit 1 and the optical fiber unit 2 are twisted, since there is a gap 3 between the outer wall of the optical fiber 2-2 and the inner wall of the conduit 2-1, after the conduit 2-1 is squeezed, the gap 3 has a certain deformation buffer space, which prevents the conduit 2-1 from squeezing the optical fiber 2-2 after deformation.
[0030] See also Figure 1-Figure 2 The conductor units 1 of each layer are distributed along the circumferential direction. With the above structure, the structure of the optical fiber temperature measurement cable conductor becomes more compact, and the resistivity of the optical fiber temperature measurement cable conductor is reduced.
[0031] See also Figure 1-Figure 2 , a circular conductor 4 is arranged at the center position surrounded by the innermost conductor unit 1; the conductor unit 1 is a fan-shaped conductor unit, and the conduit 2-1 is a fan-shaped conduit. In the above structure, the circular conductor 4 is also used to transmit electricity. A circular conductor 4 is arranged, and a plurality of conductor units 1 are arranged along the circumferential direction and in layers along the radial direction on the outside of the circular conductor 4. The fan-shaped conduit and the fan-shaped conductor unit can be connected more closely, so that the overall filling rate of the optical fiber temperature measurement cable conductor is high, and the width (diameter) of the optical fiber temperature measurement cable conductor can be reduced while meeting the load, thereby reducing the resistivity of the optical fiber temperature measurement cable conductor and reducing the weight per unit length.
[0032] See also Figure 1-Figure 2The inner and outer sides of the conductor unit 1 and the conduit 2-1 are both provided with arc surfaces 20, the arc surface 20 located on the inner side is the inner arc surface, and the arc surface 20 located on the outer side is the outer arc surface, and the inner arc surface of the innermost conductor unit 1 is in contact with the outer side of the circular conductor 4; between two adjacent layers of conductor units 1, the inner arc surface of the conductor unit 1 located on the outer layer is in contact with the outer arc surface of the conductor unit 1 located on the inner layer. The purpose is to make each conductor unit 1 fit closely and improve the conductive performance.
[0033] See also Figure 1 The radius of the inner arc surface of the innermost conductor unit 1 is the same as the radius of the circular conductor 4, which is intended to make the inner arc surface of the innermost conductor unit 1 fit more closely with the outer side of the circular conductor 4 and to increase the contact area. In the conductor units 1 of two adjacent layers, the radius of the outer arc surface of the conductor unit 1 located in the inner layer is the same as the radius of the inner arc surface of the conductor unit 1 located in the outer layer, which is intended to make the conductor units 1 of the inner and outer layers fit more closely and to increase the contact area.
[0034] See also Figure 1-Figure 2 The outer shape of the conduit 2-1 is the same as that of the outermost conductor unit 1, and its purpose is to make the inner arc surface of the conduit 2-1 fit with the outer arc surface of the conductor unit 1 in the adjacent layer (i.e., located in the inner layer) to improve the conductive performance.
[0035] See also Figure 1-Figure 2 The conductor unit 1, the circular conductor 4 and the conduit 2-1 are all made of copper, which has good electrical conductivity.
[0036] See also Figure 1-Figure 3 The conductor units 1 in this embodiment are distributed in two layers along the radial direction of the optical fiber temperature measurement cable conductor. The number of the innermost conductor units 1 is 6, and the 6 conductor units 1 are distributed along the outer circumference of the circular conductor 4. The number of the outermost conductor units 1 is 11, and the 11 conductor units 1 and one optical fiber unit 2 are distributed along the outer circumference of the innermost conductor unit 1. By setting two layers, it is ensured that the conductor unit 1 can have a good conductive effect, and the structure of the optical fiber temperature measurement cable conductor will not be too complicated, which is convenient for the production of the optical fiber temperature measurement cable conductor. The conduit 2-1 is prepared by drawing or roll forming of a copper tube 8; before drawing or roll forming, the traction line 9 needs to be prefabricated in the tube 8 in advance. After drawing or roll forming, it is convenient to pull the optical fiber 2-2 through the traction line 9 and replace it into the conduit 2-1.
[0037] The conductor units 1 of this embodiment may be distributed in three layers, four layers, or five layers or more along the radial direction of the optical fiber temperature measurement cable conductor; the optical fiber unit 2 is located in the outermost layer.
[0038] The conduit 2-1 in this embodiment may be a circular conduit, and the conductor unit 1 may be a circular conductor unit. Further, the conduit 2-1 and the conductor unit 1 in this embodiment are not limited to being sector-shaped or circular, and other shapes of lines are also acceptable.
[0039] See also Figure 1-Figure 2 and Figure 4 , the working principle of the above optical fiber temperature measurement cable conductor is:
[0040] The optical fiber temperature measuring cable conductor 01 is formed by twisting and pressing multiple conductor units 1, an optical fiber unit 2 and a circular conductor 4 located in the center. The conductor unit 1 and the circular conductor 4 are used to transmit electricity. The optical fiber 2-2 in the optical fiber unit 2 can detect the temperature of the conductor unit 1 in real time. The optical fiber unit 2 is set in the outermost layer. When the optical fiber temperature measuring cable conductor 01 and the cable accessory 02 are installed, it is only necessary to directly pull the optical fiber unit 2 out of the outermost conductor unit 1 to achieve the connection of the optical fiber unit 2. The operation is simple. At the same time, the optical fiber unit 2 is completely free of force during the installation of the cable accessory 02, and the probability of damage is greatly reduced, thereby improving the reliability of the connection of the optical fiber 2-2. The optical fiber 2-2 is built into the conduit 2-1, and the conduit 2-1 can also transmit electricity and protect the optical fiber 2-2. When the conductor unit 1 and the optical fiber unit 2 are twisted into a cable, the optical fiber 2-2 will not be squeezed, thereby avoiding damage to the optical fiber 2-2.
[0041] The above is a preferred implementation mode of the present invention, but the implementation mode of the present invention is not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.
Claims
1. An optical fiber temperature measurement cable conductor, characterized in that: It includes multiple conductor units and an optical fiber unit; the multiple conductor units are arranged in layers along the radial direction of the optical fiber temperature measuring cable conductor, and the optical fiber unit is arranged between two adjacent conductor units in the outermost layer; the optical fiber unit includes a conduit and an optical fiber arranged inside the conduit.
2. The optical fiber temperature measurement cable conductor according to claim 1, characterized in that: There is a gap between the outer wall of the optical fiber and the inner wall of the conduit.
3. The optical fiber temperature measurement cable conductor according to claim 1, characterized in that: The conductor units of each layer are distributed along the circumferential direction.
4. The optical fiber temperature measurement cable conductor according to claim 3, characterized in that: A circular conductor is arranged at the center position surrounded by the innermost conductor unit; the conductor unit is a fan-shaped conductor unit, and the conduit is a fan-shaped conduit.
5. The optical fiber temperature measurement cable conductor according to claim 4, characterized in that: The conductor unit, the circular conductor and the conduit are all made of copper.
6. The optical fiber temperature measurement cable conductor according to claim 4, characterized in that: The inner and outer sides of the conductor unit and the conduit are both provided with arc surfaces, the arc surface located on the inner side is the inner arc surface, and the arc surface located on the outer side is the outer arc surface, and the inner arc surface of the innermost conductor unit is in contact with the outer side of the circular conductor; between the conductor units of two adjacent layers, the inner arc surface of the conductor unit located on the outer layer is in contact with the outer arc surface of the conductor unit located on the inner layer.
7. The optical fiber temperature measurement cable conductor according to claim 6, characterized in that: The outer shape of the conduit is the same as that of the outermost conductor unit, and the inner arc surface of the conduit is in contact with the outer arc surface of the conductor unit in an adjacent layer.
8. The optical fiber temperature measurement cable conductor according to claim 1, characterized in that: The conductor units are distributed in two layers along the radial direction of the optical fiber temperature measurement cable conductor.