Intelligent flexible busbar

Abstract

The utility model relates to intelligent flexible busbar, including busbar body, temperature detection structure and strain detection structure: the busbar body, the busbar body includes at least one group of flexible conductor unit and winding layer, the winding layer is covered in the outer periphery of at least one group of flexible conductor unit, the winding layer includes first side and second side, the temperature detection structure sets up in the winding layer, and is located first side, is used for monitoring the temperature of busbar body, the strain detection structure sets up in the winding layer, and is located second side, is used for monitoring the strain of busbar body. The flexible busbar sets up temperature detection structure in the winding layer of busbar body and at its first side, and sets up strain detection structure in the winding layer and at its second side, thereby can monitor the temperature of busbar body through the temperature detection structure and monitor the strain of busbar body through the strain detection structure.

Description

Technical Field

[0001] This utility model relates to the field of flexible busbar technology, and in particular to intelligent flexible busbars. Background Technology

[0002] With the continuous development of modern power systems, the demand for power transmission security and real-time monitoring is constantly increasing. The scale and speed of power cables are expanding, and voltage levels are also rising. As a component of the power grid, the monitoring of the busbar's operational status remains of paramount importance. Due to long-term operation, busbars are prone to insulation aging, which can easily lead to localized high temperatures or even fires under high internal load currents. Therefore, the goal of power production is to maintain the stability of the power system, ensure normal power supply, and prevent and eliminate major and catastrophic accidents such as fatalities, large-scale power outages, severe damage to main equipment, power plant collapses, and major fires, as well as accidents with significant social impact.

[0003] In the current operation of power systems, a large amount of heat is generated inside the busbars, causing their temperature to rise. Various types of faults can further increase the overall temperature of the busbars, directly leading to overheating or insulation aging. Therefore, taking targeted measures to effectively monitor busbar temperature and strain is of substantial significance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an improved intelligent flexible busbar, especially an intelligent flexible busbar with remote real-time monitoring of temperature and strain status, which is beneficial to ensuring its stable and effective operation.

[0005] The technical solution adopted by this utility model to solve its technical problem is: constructing an intelligent flexible busbar, including a busbar body, a temperature detection structure, and a strain detection structure.

[0006] The busbar body includes at least one set of flexible conductor units and a wrapping layer, the wrapping layer covering the outer periphery of the at least one set of flexible conductor units; the wrapping layer includes a first side and a second side.

[0007] The temperature detection structure is disposed in the wrapping layer and located on the first side, and is used to monitor the temperature of the busbar body;

[0008] The strain detection structure is disposed in the wrapping layer and located on the second side, and is used to monitor the strain of the busbar body.

[0009] In some embodiments, the temperature sensing structure and / or the strain sensing structure are fixedly connected to the flexible conductor unit.

[0010] In some embodiments, each of the flexible conductor units includes at least two flexible conductors and at least one flexible connector, wherein the at least two flexible conductors are arranged side by side and adjacent flexible conductors are connected by the flexible connector.

[0011] In some embodiments, the temperature detection structure has a first connector, which is disposed outside the busbar body and is used to be detachably inserted into the fiber optic port of the fiber optic grating demodulator.

[0012] And / or, the strain detection structure has a second connector, which is disposed outside the busbar body and is used to be detachably inserted into the fiber optic port of the fiber optic grating demodulator.

[0013] In some embodiments, the temperature detection structure includes a fiber optic temperature sensor;

[0014] The fiber grating temperature sensor includes a first fiber core, a capillary tube, and a first insulating shell.

[0015] One end of the first optical fiber core is embedded in the capillary in a free and relaxed state; the other end of the first optical fiber core is connected to the first connector; the capillary is encapsulated in the first insulating shell;

[0016] The first optical fiber core located in the capillary has a plurality of first grating stripes arranged along its length.

[0017] In some embodiments, the strain detection structure includes a fiber optic strain sensor;

[0018] The fiber optic strain sensor includes a second fiber core, a tight sheath, a loose sheath, and a second insulating shell.

[0019] The tight sleeve and the loose sleeve are arranged side by side in the second insulating shell along the axial direction of the second insulating shell;

[0020] The second optical fiber core is inserted into the tight sheath, with one end of the second optical fiber core being freely and loosely embedded in the loose sheath; the other end of the second optical fiber core is connected to the second connector.

[0021] In some embodiments, the second optical fiber core located in the tight sheath and the loose sheath is provided with a plurality of second grating stripes.

[0022] In some embodiments, the busbar body further includes an insulation layer, an armor layer, and a protective layer; the insulation layer, armor layer, and protective layer are disposed sequentially from the inside to the outside of the wrapping layer.

[0023] In some embodiments, a protective housing is also included, in which the bus body is disposed.

[0024] In some embodiments, the protective housing is provided with a plurality of fire-resistant breathing valves;

[0025] And / or, the intelligent flexible busbar further includes a fireproof board, which is disposed in the protective shell, and both opposite sidewalls of the fireproof board are provided with fire-resistant insulation layers;

[0026] And / or, at least one sidewall of the protective housing is provided with a heat dissipation structure.

[0027] The intelligent flexible busbar of this utility model has the following beneficial effects: By setting a temperature detection structure on the first side of the busbar body's wrapping layer and a strain detection structure on the second side of the wrapping layer, the temperature detection structure can monitor the temperature of the busbar body, and the strain detection structure can monitor the strain of the busbar body. The temperature detection structure can detect temperature changes in the busbar body caused by changes in the surrounding environment, while the strain detection structure can detect strain changes caused by changes in the surrounding environment. Devices connected to the temperature and strain detection structures can issue alarm signals based on preset temperature and strain values, prompting the user... Users should pay attention to the operating status of the busbar body, so that staff can understand its operating status and locate the fault location as soon as possible. It can monitor the temperature and strain of the busbar body in real time, avoiding safety accidents caused by overheating. This allows the busbar body to not only effectively transmit power, but also has the function of real-time monitoring of temperature and strain status. It can accurately measure the temperature and strain of the busbar body, effectively reflect the temperature and strain changes of the busbar body, and avoid safety accidents caused by overheating. It greatly improves the safety, reliability and intelligence of the power system, while also improving the heat dissipation effect and operating safety of the busbar body. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the structure of the intelligent flexible busbar in some embodiments of this utility model;

[0030] Figure 2 yes Figure 1 A partial structural exploded view of the intelligent flexible busbar shown.

[0031] Figure 3 yes Figure 1 Another partial structural exploded view of the intelligent flexible busbar shown.

[0032] Figure 4 yes Figure 2A schematic diagram of the busbar body structure of the intelligent flexible busbar shown.

[0033] Figure 5 yes Figure 4 A cross-sectional view of the intelligent flexible busbar shown.

[0034] Figure 6 yes Figure 5 The diagram shows the flexible conductor unit structure of the intelligent flexible busbar.

[0035] Figure 7 yes Figure 5 The diagram shows the overall structure of the temperature detection structure for the intelligent flexible busbar.

[0036] Figure 8 yes Figure 7 A partial cross-sectional view of the temperature detection structure shown.

[0037] Figure 9 yes Figure 5 A schematic diagram of the overall structure of the strain detection structure for the intelligent flexible busbar shown.

[0038] Figure 10 yes Figure 9 A partial cross-sectional view of the strain detection structure shown. Detailed Implementation

[0039] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by terms such as "upper," "lower," "longitudinal," "horizontal," "top," "bottom," "inner," and "outer" are based on the directions or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0040] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0041] Figure 1 Some preferred embodiments of the intelligent flexible busbar of this utility model are shown. This intelligent flexible busbar is an intelligent flexible busbar with remote real-time monitoring of temperature and strain status. It aims to solve the technical problems of existing flexible busbars that do not have real-time temperature and strain monitoring functions, are not intelligent enough, and cannot issue alarm signals in time to remind users to pay attention to the usage status of the flexible busbar when the flexible busbar exceeds the preset temperature and strain values.

[0042] like Figures 1 to 5 As shown, in some embodiments, the intelligent flexible busbar may include a protective housing 100, a busbar body 200, a temperature detection structure 300, and a strain detection structure 400. The busbar body 200 is disposed within the protective housing 100. Both the temperature detection structure 300 and the strain detection structure 400 are disposed within the busbar body 200, wherein the temperature detection structure 300 is used to monitor the temperature of the busbar body 200, and the strain detection structure 400 is used to monitor the strain of the busbar body 200.

[0043] like Figures 2 to 3As shown, in some embodiments, the protective housing 100 can be a metal protective housing, which can be made of sheet metal materials, such as aluminum plate or stainless steel plate, and mainly serves to fix and protect the busbar body 200, effectively resisting the influence of the external environment. In some embodiments, the protective housing 100 can be longitudinally arranged, specifically, the protective housing 100 can be generally rectangular in shape, with a hollow interior. In some embodiments, the protective housing 100 is provided with a plurality of fire-resistant breathing valves 101, specifically, the plurality of fire-resistant breathing valves 101 are provided on the upper end wall of the protective housing 100. The fire-resistant breather valve is a single-phase vent and is a fire-activated type, meaning it only closes when exposed to fire. By installing the fire-resistant breather valve 101, heat dissipation is accelerated, preventing excessively high internal temperatures of the protective housing 100 and improving the overload capacity of the busbar body 200. In some embodiments, the protective housing 100 is provided with a top cover 102, which is rotatably mounted on the upper end wall. The top cover 102 can be rotated to cover the plurality of fire-resistant breather valves 101. In some embodiments, the fire-resistant breather valves 101 and the top cover 102 can be omitted.

[0044] In some embodiments, the intelligent flexible busbar further includes a fireproof plate 103, which is disposed within the protective housing 100 and can be longitudinally arranged. The length direction of the fireproof plate 103 can be parallel to the length direction of the protective housing 100. In some embodiments, the fireproof plate 103 is embedded in the inner wall of the protective housing 100, which can effectively improve the fire resistance of the protective housing 100 and enhance the safety of the busbar body 200. In some embodiments, the fireproof plate 103 is formed of rock wool or high-temperature resistant mineral material. In other embodiments, the fireproof plate 103 can be omitted.

[0045] In some embodiments, the fireproof board 103 has a fire-resistant insulating layer 104 on each of its two oppositely arranged sidewalls. The fire-resistant insulating layer 104 can be applied, printed, or adhered to the fireproof board 103. The fire-resistant insulating layer 104 can be selected from insulating materials that are resistant to high temperatures, corrosion, and have good electrical insulation properties, effectively protecting the busbar body 200. Generally, the fire-resistant insulating layer 104 can be formed from polyester film, polytetrafluoroethylene, or cross-linked polyethylene. In other embodiments, the fire-resistant insulating layer 104 can be omitted.

[0046] In some embodiments, a heat dissipation structure 105 is provided on at least one sidewall of the protective housing 100. Specifically, the heat dissipation structure 105 is provided on two opposite sidewalls of the protective housing 100. Generally, the heat dissipation structure 105 can be a plurality of heat dissipation ridges protruding from the sidewall, each heat dissipation ridge extending along the length direction of the protective housing 100. In other embodiments, the heat dissipation structure 105 is not limited to a plurality of heat dissipation ridges protruding from the sidewall. In some embodiments, the heat dissipation structure 105 can also be a heat dissipation hole provided on the sidewall. By providing the heat dissipation structure 105, the heat dissipation area of ​​the protective housing 100 is increased, the heat dissipation performance of the protective housing 100 is improved, and the temperature rise of the bus body 200 is reduced, thereby improving the overload capacity and current carrying capacity of the bus body 200.

[0047] like Figure 1 , Figures 4 to 6 As shown, in some embodiments, the busbar body 200 can be multiple, and these multiple busbar bodies 200 can be spaced apart along the width direction of the protective housing 100. Of course, it is understood that in other embodiments, the busbar body 200 can also be a single unit. The busbar body 200 includes at least one set of flexible conductor units 201 and a wrapping layer 202. In some embodiments, the flexible conductor units 201 can be a set, and this set of flexible conductor units 201 can be wound up. In other embodiments, the at least one set of flexible conductor units 201 can be multiple sets, and these multiple sets of flexible conductor units 201 can be arranged side-by-side in the thickness direction of the flexible conductor units 201. The wrapping layer 202 can cover the outer periphery of at least one set of flexible conductor units 201, forming a longitudinally elongated sheet structure by wrapping the wound flexible conductor units 201. In some embodiments, the wrapping layer 202 includes a first side and a second side, wherein the first side and the second side can be two curved portions formed by winding the wrapping layer 202, and these two curved portions form the upper and lower sides of the wrapping layer 202.

[0048] In some embodiments, the flexible conductor unit 201 may be a flexible copper busbar. Each flexible conductor unit 201 may include at least two flexible conductors 2011 and a flexible connector 2012. The at least two flexible conductors 2011 may be arranged side by side. Specifically, the at least two flexible conductors 2011 may be multiple flexible conductors 2011, such as five flexible conductors 2011, six flexible conductors 2011, seven flexible conductors 2011, eight flexible conductors 2011, etc. In some embodiments, the multiple flexible conductors 2011 may be arranged side by side along the radial direction of the flexible conductors 2011. In some embodiments, the flexible conductor 2011 may be a flexible copper conductor. Two adjacent flexible conductors 2011 may be connected and fixed by the flexible connector 2012.

[0049] In some embodiments, the outer peripheral wall of the flexible conductor unit 201 is provided with a tin-plated or nickel-plated layer, which improves its oxidation resistance and corrosion resistance, reduces the impact of oxidation on the performance of the flexible conductor unit 201, and extends the service life of the flexible conductor unit 201.

[0050] In some embodiments, by using rows of flexible copper conductors to form flexible conductor units 201, stress concentration can be effectively reduced. This means that during current transmission, the current can be distributed more evenly on the surface of the flexible copper conductor, reducing the conductor's resistance and thus improving the conductivity of the busbar body. Compared with traditional rigid busbars, stress-relief flexible conductor units 201 can reduce heat generation under the same current load, reduce energy loss, and improve power utilization. They are also flexible, lightweight, and can achieve multiple degrees of torsional bending, curling, and bending, making them easy to process, transport, and install. They have very high safety and reliability, effectively meeting the power transmission needs of various extreme environments, and providing strong protection for industrial production and personnel safety.

[0051] In some embodiments, the wrapping layer 202 is formed using mica tape, fiberglass tape, or ceramic composite tape, which improves the insulation and fire resistance of the busbar body 200.

[0052] In some embodiments, the busbar body 200 further includes an insulation layer 203, an armor layer 204, and a protective layer 205. The insulation layer 203, armor layer 204, and protective layer 205 are sequentially disposed on the outer periphery of the wrapping layer 202 from the inner to the outer. That is, the insulation layer 203 wraps around the outer peripheral wall of the wrapping layer 202, the armor layer 204 covers the outer peripheral wall of the insulation layer 203, and the protective layer 205 covers the outer peripheral wall of the armor layer 204.

[0053] In some embodiments, the insulating layer 203 is formed of flame-retardant polyolefin, which has strong insulating properties and does not emit toxic gases when exposed to fire.

[0054] In some embodiments, the armor layer 204 can be a metal armor layer. The armor layer 204 is formed of highly flexible aluminum alloy self-locking armor. Aluminum alloy self-locking armor is lighter and easier to peel off than steel armor, has high strength, strong corrosion resistance, and is a non-magnetic material that will not generate sparks upon impact. It is safe and reliable when near flammable and explosive materials. The self-locking structure allows it to bend in a smaller space, has a 360° bending capability, and has a lighter weight and higher strength, making it easy to construct and install.

[0055] In some embodiments, the protective layer 205 is made of polyvinyl chloride or polyolefin material, which has good high temperature resistance, flame retardancy and aging resistance, ensuring the durability of the busbar body 200.

[0056] like Figure 5 , Figure 7 and Figure 8 As shown, in some embodiments, the temperature sensing structure 300 may be disposed in the wrapping layer 202 and located on the first side of the wrapping layer 202. The temperature sensing structure 300 may be fixedly connected to the flexible conductor unit 201. In some embodiments, the temperature sensing structure 300 may be fixedly connected to the flexible conductor unit 201 by an adhesive. In other embodiments, the temperature sensing structure 300 may not be limited to being fixedly connected to the flexible conductor unit 201 by an adhesive; it may simply be in close contact with the outer wall of the flexible conductor unit 201, and fixedly contacted with the outer wall of the flexible conductor unit 201 by the wrapping layer 202 covering and pressing. In some embodiments, a groove may be provided on the side wall of the flexible conductor unit 201, and the temperature sensing structure 300 may be fixedly disposed in the groove. The length direction of the temperature sensing structure 300 may be parallel to that of the flexible conductor unit 201. Of course, it is understood that in other embodiments, the temperature sensing structure 300 may not be fixedly connected to the flexible conductor unit 201.

[0057] In some embodiments, the temperature detection structure 300 includes a fiber Bragg grating temperature sensor. It should be noted that the mechanism of the fiber Bragg grating temperature sensor is based on the fact that thermal expansion and contraction of the fiber Bragg grating causes changes in its period and effective refractive index, resulting in a shift in the center wavelength of the fiber Bragg grating. The temperature change is measured by the relationship between the amount of temperature change and the amount of center wavelength shift.

[0058] In some embodiments, the fiber optic temperature sensor includes a first fiber core 301, a capillary tube 302, and a first insulating shell 303. The first fiber core 301 is longitudinally arranged, with one end freely and relaxed within the capillary tube 302. The fiber core 301 and the opening of the capillary tube 302 can be fixed and sealed with epoxy resin adhesive. In some embodiments, the capillary tube 302 can be columnar and can be made of a light-transmitting material. In some embodiments, the capillary tube 302 can be a capillary glass tube. In some embodiments, the capillary tube 302 can be encapsulated in the first insulating shell 303. In some embodiments, the first insulating shell 303 can be made of an insulating material. In some embodiments, the first insulating shell 303 can be an insulating ceramic armor shell; however, it is understood that in other embodiments, the first insulating shell 303 is not limited to a ceramic material and can also be made of quartz. In some embodiments, the cross-sectional dimension of the capillary 302 is smaller than that of the first insulating shell 303. In some embodiments, the capillary 302 and the first insulating shell 303 may be cylindrical, and the outer diameter of the capillary 302 may be smaller than the inner diameter of the first insulating shell 303. In some embodiments, the battery diameter of the first insulating shell 303 is 0.9 mm to 3.0 mm.

[0059] The gap between the capillary tube 302 and the first insulating shell 303 can be filled with a thermally conductive material 305, which in some embodiments can be thermally conductive oil. Filling with the thermally conductive material 305 can improve the temperature transfer rate.

[0060] The first optical fiber core 301 located in the capillary 302 has multiple first grating stripes 306 arranged along its length. These multiple first grating stripes 306 can effectively shield the fiber grating from the influence of external strain. The packaging method of this fiber grating temperature sensor not only protects the fiber grating, but also solves the problem of simultaneous sensitivity to temperature strain in the fiber grating.

[0061] In some embodiments, the temperature detection structure 300 has a first connector 307 disposed outside the bus body 200, which can be detachably inserted into the fiber optic port of the fiber optic demodulator. It should be noted that the fiber optic demodulator is a detection instrument that measures the center wavelength of the sensitive element (i.e., fiber optic grating) in various FBG sensors in real time.

[0062] like Figure 5 , Figure 9 and Figure 10 As shown, in some embodiments, the strain detection structure 400 is disposed within the wrapping layer 202, and may be located on the second side of the wrapping layer 202, that is, on the lower side of the wrapping layer 202. The strain detection structure 400 can be fixedly connected to the flexible conductor unit 201. In some embodiments, the strain detection structure 400 is connected and fixed to the flexible conductor unit 201 by an adhesive. In other embodiments, the flexible conductor unit 201 may also have grooves for mounting and fixing the strain detection structure 400.

[0063] In some embodiments, the strain detection structure includes a fiber Bragg grating strain sensor. The mechanism of the fiber Bragg grating strain sensor is based on the elastic-optical effect that occurs when a fiber Bragg grating is subjected to axial force. This alters the grating's period and effective refractive index, causing a shift in the grating's center wavelength. The strain is measured by the relationship between the change in grating strain and the shift in center wavelength. To measure the strain change of an object under test, the fiber Bragg grating strain sensor is often attached to the object using an adhesive. The grating and the object deform together, and the measured strain of the fiber Bragg grating is the strain of the object under test.

[0064] In some embodiments, the fiber optic strain sensor may include a second fiber core 401, a tight sheath 402, a loose sheath 403, and a second insulating shell 404. In some embodiments, the tight sheath 402 and the loose sheath 403 may be arranged side-by-side along the axial direction of the second insulating shell 404. The tight sheath 402 and the loose sheath 403 may be coaxially arranged with the second insulating shell 404. In some embodiments, the second fiber core 401 passes through the tight sheath 402, and one end of the second fiber core 401 is freely and loosely embedded in the loose sheath 403. The second insulating shell 404 may be cylindrical with a hollow inner side. In some embodiments, the second insulating shell 404, the tight sheath 402, and the loose sheath 403 are all cylindrical, and the outer diameter of the second insulating shell 404 may be larger than the outer diameters of the tight sheath 402 and the loose sheath 403. In some embodiments, the outer diameter of the second insulating shell 404 may be 0.9 mm to 3.0 mm. In some embodiments, the second insulating shell 404 will generate strain when subjected to force, and the second insulating shell 404 is affected by two parameters: temperature and strain. In some embodiments, the second insulating shell 404 may be made of insulating material. Generally, the second insulating shell 404 may be a second ceramic armor shell. It is understood that in some other embodiments, the second insulating shell 404 may not be limited to ceramic material. In some embodiments, the second insulating shell 404 may be made of quartz material.

[0065] In some embodiments, the gap between the second insulating shell 404 and the tight sleeve 402 and the loose sleeve 403 may be filled with adhesive 405, so that the tight sleeve 402 and the loose sleeve 403 are fixed in the second insulating shell 404. In some embodiments, the adhesive 405 may be epoxy resin glue.

[0066] In some embodiments, the second optical fiber core 401 located in the tight sheath 402 and the loose sheath 403 is provided with a plurality of second grating stripes 406.

[0067] In some embodiments, the strain detection structure 400 has a second connector 407 disposed outside the bus body 200, which can be detachably inserted into the fiber optic port of the fiber optic demodulator. In some embodiments, the other end of the second fiber core 401 can be connected to the second connector 407.

[0068] In some embodiments, both the temperature detection structure 300 and the strain detection structure 400 employ fiber optic grating sensors. Fiber optic grating sensors are characterized by high accuracy, high sensitivity, small size, flexibility, and embeddability, and have rapidly developed in the sensing field, becoming one of the most representative sensors in fiber optic sensing. Fiber optic gratings are made using the photosensitivity of optical fibers. Grating sensors measure strain using the principle of grating fringe stacking. A grating consists of densely packed, equally spaced parallel lines on a long strip of optical glass, with a line density of 10–100 lines / mm. The stacked grating fringes formed by the grating have optical magnification and error averaging effects, thus improving measurement accuracy.

[0069] With the development of fiber optic communication technology, fiber optic sensor technology has also emerged. Fiber optic sensors extract light signals, thus avoiding interference from surrounding electromagnetic fields. Fiber optic grating temperature sensors and fiber optic grating strain sensors can detect changes in the temperature and strain of the busbar itself caused by environmental changes. Based on preset temperature and strain values, they can issue alarm signals to alert users to the busbar's operating status. This effectively reflects changes in the busbar's temperature and strain, preventing safety accidents caused by overheating.

[0070] The emergence of fiber Bragg grating temperature sensors has effectively compensated for the shortcomings of traditional platinum resistance temperature sensors. Fiber Bragg grating temperature sensors offer the advantage of distributed measurement, while also being small in size and light in weight, and generally unaffected by electromagnetic interference during normal operation.

[0071] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A smart flexible busbar, characterized in that, This includes the busbar body, temperature detection structure, and strain detection structure. The busbar body includes at least one set of flexible conductor units and a wrapping layer, the wrapping layer covering the outer periphery of the at least one set of flexible conductor units; the wrapping layer includes a first side and a second side. The temperature detection structure is disposed in the wrapping layer and located on the first side, and is used to monitor the temperature of the busbar body; The strain detection structure is disposed in the wrapping layer and located on the second side, and is used to monitor the strain of the busbar body.

2. The intelligent flexible busbar according to claim 1, characterized in that, The temperature detection structure and / or the strain detection structure are fixedly connected to the flexible conductor unit.

3. The intelligent flexible busbar according to claim 1, characterized in that, Each of the flexible conductor units includes at least two flexible conductors and at least one flexible connector. The at least two flexible conductors are arranged side by side, and adjacent flexible conductors are connected by the flexible connector.

4. The intelligent flexible busbar according to claim 1, characterized in that, The temperature detection structure has a first connector, which is located outside the busbar body and is used to be detachably inserted into the fiber optic port of the fiber optic grating demodulator. And / or, the strain detection structure has a second connector, which is disposed outside the busbar body and is used to be detachably inserted into the fiber optic port of the fiber optic grating demodulator.

5. The intelligent flexible busbar according to claim 4, characterized in that, The temperature detection structure includes a fiber optic temperature sensor. The fiber grating temperature sensor includes a first fiber core, a capillary tube, and a first insulating shell. One end of the first optical fiber core is embedded in the capillary in a free and relaxed state; the other end of the first optical fiber core is connected to the first connector; the capillary is encapsulated in the first insulating shell; The first optical fiber core located in the capillary has a plurality of first grating stripes arranged along its length.

6. The intelligent flexible busbar according to claim 5, characterized in that, The strain detection structure includes a fiber optic strain sensor. The fiber optic strain sensor includes a second fiber core, a tight sheath, a loose sheath, and a second insulating shell. The tight sleeve and the loose sleeve are arranged side by side in the second insulating shell along the axial direction of the second insulating shell; The second optical fiber core is inserted into the tight sheath, with one end of the second optical fiber core being freely and loosely embedded in the loose sheath; the other end of the second optical fiber core is connected to the second connector.

7. The intelligent flexible busbar according to claim 6, characterized in that, The second optical fiber core located in the tight sheath and the loose sheath is provided with a plurality of second grating stripes.

8. The intelligent flexible busbar according to claim 1, characterized in that, The busbar body also includes an insulation layer, an armor layer, and a protective layer; the insulation layer, armor layer, and protective layer are arranged sequentially from the inside to the outside of the wrapping layer.

9. The intelligent flexible busbar according to claim 1, characterized in that, It also includes a protective housing, in which the busbar body is disposed.

10. The intelligent flexible busbar according to claim 9, characterized in that, The protective outer shell is equipped with multiple fire-resistant breathing valves; And / or, the intelligent flexible busbar further includes a fireproof board, which is disposed in the protective shell, and both opposite sidewalls of the fireproof board are provided with fire-resistant insulation layers; And / or, at least one sidewall of the protective housing is provided with a heat dissipation structure.

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