Wire bar and generator stator with temperature measurement function

Abstract

The utility model discloses a wire bar and generator stator with temperature measurement function, aims at solving the temperature sensor in traditional wire bar structure, cannot directly measure the temperature of wire bar conductor, there is temperature measurement result misalignment, temperature measurement efficiency is low and cannot realize the overheating early warning of generator stator's problem. The wire bar body and temperature sensor of the utility model, the wire bar body includes conductor and insulating layer, and the insulating layer is sleeved on the conductor, and the temperature sensor includes temperature sensing probe and signal transmission part, and temperature sensing probe is connected with signal transmission part, temperature sensing probe is connected with the conductor, and the insulating layer is connected with temperature sensing probe, and signal transmission part sets up between the insulating layer and the conductor and leads out from one end of the insulating layer. Through temperature sensing probe and conductor direct connection, make temperature sensor can directly monitor the temperature condition of conductor, avoid the thermal resistance delay of indirect temperature measurement, ensure the accuracy and timeliness of temperature monitoring, improve the efficiency of temperature monitoring.

Description

Technical Field

[0001] This utility model relates to the field of bar temperature detection technology, and in particular to a bar with temperature measurement function and a generator stator. Background Technology

[0002] The stator conductors of a generator are key conductive components, undertaking the core functions of power conversion and transmission. During long-term operation, they must withstand high voltage, high current, and complex electromagnetic environments. Abnormal temperature increases can easily lead to insulation aging, partial discharge, or even short-circuit faults, directly affecting the safety and lifespan of the generator unit. Therefore, real-time and accurate monitoring of the actual temperature of the conductors is of great significance for optimizing the unit's operating status, preventing overheating risks, and extending equipment lifespan.

[0003] Traditional stator bars employ a multi-layered composite structure. To monitor temperature, conventional methods embed temperature sensors within the interlayer insulation. However, the difference in thermal resistance between the insulation material and the conductor leads to a significant temperature difference between the interlayer temperature and the actual conductor temperature. Furthermore, the sensor's location within the insulation between two bar layers further amplifies this temperature difference. This discrepancy makes it difficult for traditional temperature measurement methods to accurately and promptly reflect the conductor's real-time temperature, hindering effective early warning of potential overheating risks and limiting improvements in the accuracy and response speed of temperature monitoring. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] The purpose of this invention is to provide a bar conductor and generator stator with temperature measurement function, aiming to solve the problems in traditional bar conductor structures where temperature sensors cannot directly measure the temperature of the bar conductor, resulting in inaccurate temperature measurement results, low temperature measurement efficiency, and the inability to provide overheat warnings for the generator stator.

[0006] (II) Technical Solution

[0007] To solve the above problems, the first aspect of this utility model provides a wire rod with temperature measurement function, including a wire rod body and a temperature sensor;

[0008] The bar body includes a conductor and an insulating layer, the insulating layer being sleeved on the conductor, and the temperature sensor includes a temperature sensing probe and a signal transmission unit, the temperature sensing probe being connected to the signal transmission unit;

[0009] The temperature sensing probe is connected to the conductor, the insulating layer is connected to the temperature sensing probe, and the signal transmission unit is disposed between the insulating layer and the conductor and leads out from one end of the insulating layer.

[0010] Preferably, the wire bar further includes a fixing part, the temperature sensing probe is attached to the conductor, and the temperature sensing probe is fixedly connected to the conductor through the fixing part.

[0011] Preferably, the insulating layer has a trace channel, the trace channel is connected to one end of the insulating layer, and the signal transmission unit is led out along the trace channel.

[0012] Preferably, a mounting groove is formed on the inner side of the insulating layer, the temperature sensing probe is disposed in the mounting groove, and the mounting groove is connected to the wiring channel.

[0013] Preferably, the temperature sensor further includes a signal connector, which is connected to the end of the signal transmission unit.

[0014] Preferably, the temperature sensor is an optical fiber temperature sensor, the signal transmission unit is an optical fiber, the signal connector is an optical fiber connector, and the optical fiber connects the optical fiber temperature sensor and the optical fiber connector.

[0015] Preferably, the routing direction of the wiring channel is parallel to the axis of the conductor.

[0016] According to another aspect of the present invention, a generator stator is provided, comprising a frame, an iron core, and wire bars;

[0017] The frame is fixedly connected to the iron core, the iron core has a groove, and the wire bar is disposed in the groove.

[0018] Preferably, a plurality of the wire rods are arranged in the groove, and an isolation component is provided between adjacent wire rods, the isolation component abutting against the outer side of the insulating layer.

[0019] Preferably, the temperature sensor is disposed between the rod and the insulation layer and located on the side close to the insulating component.

[0020] (III) Beneficial Effects

[0021] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0022] 1. By directly connecting the temperature probe to the conductor, the temperature sensor can directly monitor the temperature of the conductor, avoiding the thermal resistance delay that exists in indirect temperature measurement, ensuring the accuracy and timeliness of temperature monitoring, and improving the efficiency of temperature monitoring.

[0023] 2. By simultaneously covering the conductor and temperature sensor with an insulation layer, the conductor's own structure is not affected, while meeting the requirement of the temperature probe being in close contact with the conductor, improving the structural compactness of the rod and effectively adapting to the limited installation space inside the generator;

[0024] 3. The signal transmission part is placed between the insulation layer and the conductor. The signal transmission part is led out from one end of the insulation layer. The insulation part effectively protects the connection between the signal transmission part and the temperature probe, ensuring the stability of the temperature sensor during operation and the reliability of the signal transmission part in transmitting signals.

[0025] 4. By installing the temperature-measuring rod inside the generator stator and fixing the rod with the groove of the iron core, a stable operating environment for the temperature sensor is provided, ensuring the accuracy and stability of temperature monitoring. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a wire rod structure with temperature measurement function provided by this utility model;

[0027] Figure 2 yes Figure 1 A magnified schematic diagram of part A in the middle;

[0028] Figure 3 This is a diagram showing the arrangement of temperature sensors on a wire rod in the prior art;

[0029] Figure 4 This is a schematic diagram of the mechanism of a generator stator according to the present invention;

[0030] Figure 5 This is a partial schematic diagram of the relationship between multiple bars in the generator stator.

[0031] Figure label:

[0032] 100. Wire rod;

[0033] 110. Wire rod body; 111. Conductor; 112. Insulation layer; 112a. Wiring channel; 112b. Mounting groove;

[0034] 120. Temperature sensor; 121. Temperature probe; 122. Signal transmission unit; 123. Signal connector;

[0035] 200. Rack;

[0036] 300, iron core; 300a, groove;

[0037] 400. Isolation components. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0039] The accompanying drawings show schematic diagrams of layer structures according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0040] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0041] Combination Figure 1 and Figure 2 The first aspect of this utility model provides a wire rod with temperature measurement function, including a wire rod body 110 and a temperature sensor 120; the wire rod body 110 includes a conductor 111 and an insulating layer 112, the insulating layer 112 is sleeved on the conductor 111, the temperature sensor 120 includes a temperature sensing probe 121 and a signal transmission part 122, the temperature sensing probe 121 is connected to the signal transmission part 122; the temperature sensing probe 121 is connected to the conductor 111, the insulating layer 112 is connected to the temperature sensing probe 121, and the signal transmission part 122 is disposed between the insulating layer 112 and the conductor 111 and leads out from one end of the insulating layer 112.

[0042] Specifically, in combination Figure 3 , Figure 3 This diagram illustrates the arrangement of temperature sensors 120 on a conductor 100 in the prior art. Typically, multiple conductors 100 are arranged side-by-side, with a temperature sensor 120 located within an isolation component 400 between two conductors 100. This single temperature sensor 120 monitors the temperature of both conductors 100. In this configuration, the temperature of the conductor 111 within the conductor 100 needs to be transferred to the isolation component 400. The temperature sensor 120 determines the temperature of the conductor 111 by monitoring the real-time temperature of the isolation component 400. However, a temperature difference exists between the isolation component 400 and the conductor 111 during this process. This causes the temperature sensor 120 to fail to accurately reflect the actual temperature of the conductor 111 when it detects the temperature of the isolation component 400. Furthermore, the heat transfer time required for the conductor 111 to transfer heat to the isolation component 400 results in a lag in the temperature data detected by the temperature sensor 120, hindering effective overheat warnings for the conductor 111.

[0043] This invention connects the temperature sensor 120 directly to the conductor 111. The temperature sensor 120's temperature probe 121 directly monitors the temperature of the conductor 111. The signal transmission unit 122 transmits the monitored temperature data to the host computer. The specific structure of the host computer is not limited here; it can be a communication and display module of the structure used in the bar 100, as long as it can reflect the real-time temperature of the bar 100 in a timely manner.

[0044] By directly connecting the temperature probe 121 to the conductor 111, the temperature sensor 120 can directly monitor the temperature of the conductor 111, avoiding the thermal resistance delay present in indirect temperature measurement, ensuring the accuracy and timeliness of temperature monitoring, and improving the efficiency of temperature monitoring. Simultaneously covering the conductor 111 and the temperature sensor 120 with the insulation layer 112 does not affect the structure of the conductor 111 itself, while meeting the requirement for close contact between the temperature probe 121 and the conductor 111, improving the structural compactness of the rod 100 and effectively adapting to the limited installation space within the generator. The signal transmission unit 122 is positioned between the insulation layer 112 and the conductor 111, extending from one end of the insulation layer 112. The insulation effectively protects the connection between the signal transmission unit 122 and the temperature probe 121, ensuring the stability of the temperature sensor 120 during operation and the reliability of the signal transmission unit 122 in signal transmission.

[0045] It should be noted that the specific structure of the rod 100 is not limited here, nor is its specific application scenario. It can be applied to generators, transformers, or industrial electrical equipment, such as high-voltage switchgear and conductive rods in electrolytic cells. The configuration of the signal transmission unit 122 can be adaptively adjusted in different scenarios to meet the requirement of real-time and accurate temperature measurement of the rod 100. The number of temperature sensors 120 in each rod 100 is also not limited. When the size of a single rod 100 is large, resulting in temperature differences within a single rod 100, and temperature monitoring is required at multiple locations on the rod 100, multiple temperature sensors 120 can be set according to actual needs.

[0046] It should be noted that the specific method of fixing the temperature sensor 120 to the conductor 111 is not limited here. Without affecting the structure of the conductor 111 itself, the temperature sensor 120 can be fixed to the conductor 111 by snap-fitting, bonding, or welding. In a preferred embodiment, a fixing part is provided at the connection point between the temperature sensor 120 and the conductor 111, and the temperature probe 121 is in contact with the conductor 111, and the temperature probe 121 is fixedly connected to the conductor 111 through the fixing part. Specifically, before the insulation layer 112 is installed, the position between the sensor and the conductor 111 is fixed by the fixing part to ensure their initial positions, allowing the temperature probe 121 to be positioned at the designated location on the conductor 111, ensuring the accuracy of the temperature probe 121's monitoring.

[0047] The specific structure of the fixing part is not limited here. It is sufficient to achieve the fixing effect between the temperature sensor 120 and the conductor 111 by the fixing part before the insulation layer 112 is set. When the wire rod 100 is packaged, the positions of the conductor 111, the temperature probe 121 and the input end of the signal transmission part 122 are fixed first. The fixing part is used to fix them together. Then the insulation layer 112 is processed or installed, and the output end of the signal transmission part 122 is led out from the end of the insulation layer 112.

[0048] This design ensures a rigid connection between the temperature sensor 121 and the conductor 111 surface, eliminating vibration-induced separation and ensuring the continuity and stability of heat conduction. Furthermore, the fixing mechanism facilitates positional fixation between the temperature sensor 120 and the conductor 111 before the insulation layer 112 is processed or installed, improving the smoothness and quality of the overall processing. Additionally, during the use of the wire rod 100, the insulation layer 112 may deform with increasing temperature; the fixing mechanism ensures that the temperature sensor 121 remains in contact with the conductor 111, thereby guaranteeing data accuracy during temperature monitoring and the stability of the wire rod 100 structure.

[0049] In a preferred embodiment, the insulating layer 112 has a trace channel 112a connected to one end of the insulating layer 112, and the signal transmission unit 122 is led out along the trace channel 112a. Specifically, the trace channel 112a of the insulating layer 112 provides a built-in protective path for the signal transmission unit 122 to prevent external damage. The trace channel 112a is formed along the inner side of the insulating layer 112 and connects to the end of the insulating layer 112, guiding the signal transmission unit 122 to directional traces.

[0050] With this design, the inner wall of the wiring channel 112a is smooth and the path is straight, reducing bending and friction damage to the signal transmission section 122 and protecting the structural integrity of the signal transmission section 122 within the insulation layer 112. The wiring channel 112a facilitates the wiring operation of the signal transmission section 122, simplifies the assembly process, and improves the wiring consistency of the multi-bar 100. Furthermore, the wiring channel 112a, built into the insulation layer 112, does not require additional external space on the bar 100, improving the structural compactness.

[0051] It should be noted that the specific orientation of the wiring channel 112a is not limited here. As long as the signal transmission unit 122 can be led out from the end of the insulation portion and connected to a designated location according to the usage requirements of the conductor 100, signal transmission can be completed. In a preferred embodiment, the wiring channel 112a is arranged parallel to the axis of the conductor 111.

[0052] The wiring channel 112a is arranged parallel to the axis of conductor 111 to avoid stress concentration due to bending in the signal transmission section 122. The parallel arrangement means that the transmission section is only subjected to axial tensile force, without bending stress, reducing the risk of breakage and extending service life. The uniform direction of the wiring channel 112a facilitates standardized mold production, such as extrusion and compression molding, reducing manufacturing costs and processing difficulty. The axially parallel wiring channel 112a keeps the wiring of the signal transmission section 122 neat, avoiding cross-entanglement when multiple temperature sensors 120 need to be installed, and improving the utilization rate of the internal space of the wire rod 100.

[0053] In a preferred embodiment, a mounting groove 112b is formed on the inner side of the insulating layer 112, and the temperature sensor 121 is disposed within the mounting groove 112b. The mounting groove 112b is connected to the wiring channel 112a. Specifically, the size of the mounting groove 112b matches that of the temperature sensor 121, allowing the temperature sensor 121 to be attached to the surface of the conductor 111. The mounting groove 112b restricts the movement of the temperature sensor 121, and connects the mounting groove 112b to the wiring channel 112a, forming a continuous signal path. The signal transmission unit 122 is connected to the temperature sensor 121 within the mounting groove 112b, and then the signal is directly led out from the insulating layer 112 through the wiring channel 112a to achieve temperature signal transmission.

[0054] With this configuration, the size of the mounting groove 112b matches that of the temperature probe 121, allowing the temperature probe 121 to be fixed at a specific position on the surface of the conductor 111. This ensures that the temperature measurement points are consistent across the multiple rods 100, facilitating temperature data comparison and analysis. The mounting groove 112b is connected to the wiring channel 112a, allowing the signal transmission unit 122 to extend directly from the mounting groove 112b to the wiring channel 112a, reducing wiring bends and improving assembly efficiency and the lifespan of the signal transmission unit 122. This also prevents protrusions from appearing on the surface of the insulation layer 112 at the position corresponding to the temperature probe 121, ensuring the continuity of the insulation layer 112 coverage, maintaining the initial structure of the rods 100, preserving the overall insulation performance of the rods 100, and preventing structural damage caused by excessive compression of the temperature probe 121.

[0055] In a preferred embodiment, the temperature sensor 120 further includes a signal connector 123, which connects to the end of the signal transmission unit 122. Specifically, the signal connector 123 provides a standard plug-in interface, simplifying temperature information acquisition and maintenance. This configuration allows for quick plugging and unplugging of the signal transmission unit 122 with external devices, increasing the flexibility of the wire rod 100 during use. When maintenance of the temperature sensor 120 is required, it can be quickly disconnected from external devices via the signal connector 123, and in conjunction with the wiring channel 112a and mounting slot 112b, the sensor assembly can be quickly installed and removed, improving maintenance efficiency.

[0056] It should be noted that the specific type of temperature sensor 120 is not limited here. For example, it can be a surface acoustic wave temperature sensor 120, a capacitive thin-film sensor, a magnetic sensor, or a fiber optic temperature sensor 120, as long as it can meet the requirement of real-time monitoring of the temperature of conductor 111. In a preferred embodiment, the temperature sensor 120 is a fiber optic temperature sensor 120, the signal transmission unit 122 is an optical fiber, and the signal connector 123 is an optical fiber connector, with the optical fiber connecting the fiber optic temperature sensor 120 and the optical fiber connector.

[0057] With this setup, the optical fiber transmits optical signals, unaffected by the strong electromagnetic environment of the generator, avoiding noise interference from electrical signals, and ensuring the stability and accuracy of temperature monitoring results. The optical fiber itself has excellent insulation properties and can be directly applied to high-voltage line bar 100 scenarios without additional insulation treatment, simplifying structural design.

[0058] join Figure 4 and Figure 5 According to another aspect of this utility model, a generator stator is provided, including a frame 200, an iron core 300, and a conductor bar 100. The frame 200 is fixedly connected to the iron core 300, and the iron core 300 has a groove 300a, within which the conductor bar 100 is disposed. Specifically, the groove 300a and the conductor bar 100 are interference-fitted, and the frame 200 fixes the iron core 300, forming an overall structural support for the generator stator. The dimensions of the groove 300a match those of the conductor bar 100, ensuring that the conductor bar 100 is tightly installed and that the magnetic circuit air gap is uniform.

[0059] With this configuration, the temperature-sensing rod 100 is installed inside the generator stator and fixed by the groove 300a of the iron core 300, providing a stable operating environment for the temperature sensor 120 and ensuring the accuracy and stability of temperature monitoring. The temperature-sensing rod 100 is directly embedded in the groove 300a of the iron core 300, consistent with the traditional rod installation interface, allowing for quick replacement and upgrade of the rod 100 in the traditional stator. The outer surface of the rod 100 is in close contact with the groove wall of the iron core 300, utilizing the high thermal conductivity of the metal iron core 300 to accelerate heat dissipation, thereby ensuring the stability of stator operation.

[0060] It should be noted that the specific arrangement of the bars 100 is not limited here; it can be flexibly set according to the structure and requirements of the generator stator. In some generator stators, multiple bars 100 need to be stacked or layered. The temperature of each bar 100 or each layer of bars 100 may differ, requiring temperature monitoring of each individual bar 100. In this case, multiple bars 100 are arranged in the groove 300a, with an isolation component 400 between adjacent bars 100. The isolation component 400 abuts against the outer side of the insulation layer 112. The isolation component 400 (insulating material such as epoxy board or mica board) separates adjacent bars 100, serving as insulation and support, and preventing interlayer short circuits and vibration wear.

[0061] With this configuration, the isolation component 400 separates adjacent bars 100, blocks interlayer discharge paths, improves stator insulation level, and avoids short-circuit faults; the isolation component 400 acts as an elastic insulator to absorb the vibration energy of the bars 100, reduce the wear of the insulation layer 112 due to friction, and extend the life of the bars 100; the isolation component 400 forces uniform interlayer gaps, prevents the bars 100 from being deformed due to compression, and maintains the consistency of the insulation layer 112 thickness.

[0062] It should be noted that the specific location of the temperature sensor 120 is not limited here, as long as it can monitor the temperature of each rod 100. In a preferred embodiment, the temperature sensor 120 is positioned between the rod 100 and the insulation layer 112, and is located on the side close to the isolation member 400. Specifically, as shown... Figure 5 As shown, when adjacent bars 100 are arranged, adjacent conductors 111 are located on both sides near the isolation component 400, where there is a problem of temperature transfer and heat dissipation between them. The temperature here is generally higher than the temperature at other locations of conductors 111, which can easily lead to local overheating. The temperature sensor 120 is set on the side adjacent to the bar 100 and the isolation component 400 to accurately monitor the interlayer temperature.

[0063] With this setup, the temperature sensor 121 is positioned close to the isolation component 400, which can accurately capture temperature anomalies in the area, compensate for the monitoring blind spot of the conductor 111, and provide early warning of local overheating; timely detection of interlayer insulation degradation, triggering maintenance in advance, and preventing the fault from escalating; the temperatures at the locations of two adjacent temperature sensors 120 are usually not too different, and the temperature data monitored by the two adjacent temperature sensors 120 can be used to provide feedback on whether the temperature sensor 120 has failed or is inaccurate.

[0064] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A wire rod with temperature measuring function, characterized in that, The bar (100) includes a bar body (110) and a temperature sensor (120); The bar body (110) includes a conductor (111) and an insulating layer (112), the insulating layer (112) is sleeved on the conductor (111), and the temperature sensor (120) includes a temperature sensing probe (121) and a signal transmission part (122), the temperature sensing probe (121) is connected to the signal transmission part (122); The temperature sensing probe (121) is connected to the conductor (111), the insulating layer (112) is connected to the temperature sensing probe (121), and the signal transmission part (122) is disposed between the insulating layer (112) and the conductor (111) and extends out from one end of the insulating layer (112).

2. The wire bar (100) according to claim 1, characterized in that The wire rod (100) also includes a fixing part, the temperature probe (121) is attached to the conductor (111), and the temperature probe (121) is fixedly connected to the conductor (111) through the fixing part.

3. The wire bar (100) according to claim 1, characterized in that The insulating layer (112) has a trace channel (112a) which is connected to one end of the insulating layer (112), and the signal transmission unit (122) is led out along the trace channel (112a).

4. The wire bar (100) according to claim 3, characterized in that An installation groove (112b) is formed on the inner side of the insulating layer (112), and the temperature sensing probe (121) is disposed in the installation groove (112b). The installation groove (112b) is connected to the wiring channel (112a).

5. The wire bar (100) according to claim 4, characterized in that The temperature sensor (120) also includes a signal connector (123), which is connected to the end of the signal transmission unit (122).

6. The wire bar (100) according to claim 5, characterized in that The temperature sensor (120) is an optical fiber temperature sensor (120), the signal transmission unit (122) is an optical fiber, the signal connector (123) is an optical fiber connector, and the optical fiber connects the optical fiber temperature sensor (120) and the optical fiber connector.

7. The wire bar (100) according to claim 3, characterized in that The routing direction of the wiring channel (112a) is parallel to the axis of the conductor (111).

8. An electrical generator stator, characterized by, The generator stator includes a frame (200), an iron core (300), and a rod (100) as described in any one of claims 1-7; The frame (200) is fixedly connected to the iron core (300), the iron core (300) has a groove (300a), and the wire bar (100) is disposed in the groove (300a).

9. The generator stator of claim 8, wherein, A plurality of the wire rods (100) are arranged in the groove (300a), and an isolation component (400) is provided between adjacent wire rods (100). The isolation component (400) abuts against the outer side of the insulating layer (112).

10. The generator stator of claim 9, wherein, The temperature sensor (120) is disposed between the rod (100) and the insulating layer (112) and located on the side close to the insulating component (400).

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