Intelligent measuring device for elongation at break of electric wire and cable

Abstract

The utility model discloses an intelligent measuring device for the elongation at break of a wire and a cable. The intelligent measuring device is characterized by comprising a shell, a control module, a tensile measuring mechanism and a temperature control mechanism, the temperature control mechanism is composed of a multi-point temperature detection assembly and a temperature adjusting assembly, and the detection assembly is distributed in the length direction of the cable and used for monitoring the temperature change of the cable. The temperature adjusting assembly is attached to the flexible wrapping layer through a pair of heat conduction substrates arranged in a sliding mode and heating and cooling modules on the heat conduction substrates to make close contact with the cable, and heating or cooling is rapidly achieved. The device can dynamically adjust the surface temperature of the cable according to the detection data, and ensures the temperature uniformity and accuracy in the test process. The heat conduction substrate is matched with the flexible wrapping layer, the low efficiency of a traditional air conduction mode is avoided, the temperature control response speed is remarkably increased, and therefore the reliability and precision of experimental data are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wire and cable detection, specifically relates to a kind of wire and cable fracture elongation intelligent measuring device. BACKGROUND

[0002] Wire and cable is the most important component in power and communication equipment, with the continuous development of our country, the use of wire and cable is more and more, in order to ensure the use quality of wire and cable, often need to detect the fracture elongation of wire and cable, the current measuring device is by fixing the one end of wire and cable on the fixed frame, one end is fixed on the movable frame, by hydraulic cylinder drives movable frame away from fixed frame, wire and cable is pulled until breaking to reach the purpose of detecting the fracture elongation of wire and cable.

[0003] And in some time, the influence of temperature on wire and cable elongation also needs to be detected, but the existing device usually does not have temperature control module to directly heat wire and cable, before experiment, wire and cable is heated or cooled by constant temperature box and other equipment, so it is more troublesome, at the same time, after wire and cable leaves the environment of constant temperature box, temperature will change, so as to affect the accuracy of experimental results. And some devices also set temperature control module, which heats or cools the ambient temperature of wire and cable in sealed box, and then heats or cools wire and cable through air conduction. This way of heating and cooling wire and cable is low in efficiency, needs to wait for a long time, and greatly reduces the efficiency of experiment. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of wire and cable fracture elongation intelligent measuring device, solve the problem that the measuring device in prior art cannot realize the control to cable temperature and the low efficiency of temperature regulation for cable.

[0005] To achieve the above purpose, the utility model adopts the technical scheme: a kind of wire and cable fracture elongation intelligent measuring device, including shell and control module, the shell is provided with the tensile measuring mechanism for clamping and stretching two ends of cable, the shell is also provided with the temperature control mechanism electrically connected with control module, the temperature control mechanism includes the multiple-point temperature detection assembly located in the circumferential side of cable and temperature regulation assembly, the multiple-point temperature detection assembly is distributed along the length direction of cable, for detecting temperature distribution on cable, the temperature regulation assembly is used to and the surface of cable is bonded contact to heat or cool cable to set temperature.

[0006] The utility model further sets up, temperature regulation subassembly includes a pair of heat conducting base plate of sliding setting in the casing, the one side of heat conducting base plate is provided with flexible wrapping layer to cable, flexible wrapping layer adopts heat conducting material and is provided with heat conducting piece connected with heat conducting base plate in the inside, still be provided with heating module and refrigeration module of electric connection with control module on heat conducting base plate, is used for heating or refrigeration to heat conducting base plate.

[0007] The utility model further sets up, the flexible wrapping layer includes with heat conducting base plate fits silicon suit, the inside of silicon suit is distributed with flexible heat conducting piece, heat conducting piece one end fits with heat conducting base plate, silicon suit and heat conducting base plate between fill with flexible heat conducting material.

[0008] The utility model further sets up, heat conducting base plate symmetry sets up in casing two side inner wall, be provided with drive piece of electric connection with control module between heat conducting base plate casing, drive piece is used for controlling a pair of heat conducting base plate is close to or away from each other to drive flexible wrapping layer to wrap cable.

[0009] The utility model further sets up, heating module includes setting on a plurality of heat insulation strips of heat conducting base plate, heat insulation strip is provided with the heating wire of connecting power supply through control module.

[0010] The utility model further sets up, refrigeration module includes setting on a plurality of installation strips of heat conducting base plate, installation strip is provided with the refrigeration piece of connecting power supply through control module, the refrigeration end of refrigeration piece fits with heat conducting base plate, and the heat dissipation end is towards the direction of away from heat conducting base plate.

[0011] The utility model further sets up, installation strip and heat insulation strip are distributed on heat conducting base plate at equal distance interval between, be provided with the heat dissipation block of connecting a plurality of refrigeration piece heat dissipation ends between a plurality of installation strips.

[0012] The utility model further sets up, multi-point temperature detection subassembly includes a plurality of temperature sensors of distribution along cable length direction, temperature sensor sets up on stretch measuring mechanism and flexible wrapping layer, position corresponds cable two ends and cable middle part respectively, is used for obtaining the real-time temperature of cable two ends and cable middle part stretched part, temperature sensor is connected with temperature regulation subassembly through control module, is used for controlling the temperature that cable receives.

[0013] The utility model further sets up, temperature sensor is thin film thermocouple, is pasted on the clamping part of flexible wrapping layer and stretch measuring mechanism.

[0014] Summarized above, the beneficial effects of the utility model:

[0015] Compared with the prior art, the present application realizes accurate temperature control of the electric wire and cable during the breaking elongation test by setting the multi-point temperature detection assembly and the temperature adjusting assembly located on the side of the cable. The multi-point temperature detection assembly is evenly distributed along the length direction of the cable, which can detect the temperature changes of different positions of the cable during the stretching process in real time, especially the temperature monitoring of the two ends and the middle of the cable, to ensure that the temperature is uniform and controllable during the test. The temperature adjusting assembly can closely contact the surface of the cable through a pair of slidable heat-conducting base plates and a flexible wrapping layer attached thereto, to realize rapid and accurate heating and cooling adjustment. This design avoids the low efficiency problem of traditional air conduction heating, and the heat-conducting base plate directly transmits the temperature to the cable through the heat-conducting sheet, greatly improving the response speed of temperature adjustment. At the same time, the sliding of the heat-conducting base plate controlled by the driving part close to or away from the cable enables the flexible wrapping layer to automatically adapt to cables of different specifications, realizing flexible temperature adjustment. In addition, the heat-conducting material filled in the flexible wrapping layer ensures uniform temperature distribution, and local overheating or overcooling phenomenon does not occur, so as to ensure that the stretching experiment is carried out under stable temperature control, and improve the accuracy and reliability of the experimental data. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the present embodiment.

[0017] Figure 2 is a semi-sectional view of the present embodiment.

[0018] Figure 3 is an internal structure diagram of the present embodiment.

[0019] Figure 4 is an exploded view of the temperature adjusting assembly.

[0020] Figure 5 is an enlarged view of A.

[0021] Reference signs: 1, housing; 2, stretching measurement mechanism; 21, lifting cylinder; 22, fixed clamping part; 23, movable clamping part; 3, multi-point temperature detection assembly; 31, temperature sensor; 4, temperature adjusting assembly; 41, heat-conducting base plate; 42, flexible wrapping layer; 421, silica gel sleeve; 422, heat-conducting sheet; 43, heating module; 44, refrigeration module; 441, mounting strip; 442, refrigeration sheet; 443, heat dissipation block; 45, driving part. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present application.

[0023] As shown in Figure 1 The present embodiment discloses a kind of electric wire cable fracture elongation intelligent measuring device, including shell 1 and control module, shell 1 is provided with the tensile measuring mechanism 2 for the clamping and stretching of cable two ends, wherein tensile measuring mechanism 2 is connected with terminal by control module to realize the clamping, pulling and fracture elongation measurement of cable, control module is PLC control board, wherein tensile measuring mechanism 2 is prior art, including lifting cylinder 21, fixed clamping part 22 and moving clamping part 23 in shell 1, moving clamping part 23 is connected with the output end of lifting cylinder 21, can realize the axial movement relative to fixed clamping part 22, to be able to realize the clamping and pulling of cable;And simultaneously still be provided with multiple sensor module electrically connected with PLC control board, cable pulling force and moving clamping part 23 moving distance can be monitored, to be able to make staff calculate cable fracture elongation, wherein sensor module is prior art, can be set on moving clamping part 23 displacement sensor and pressure sensor are used to measure data.

[0024] And shell 1 is also provided with temperature control mechanism electrically connected with control module, temperature control mechanism includes multiple-point temperature detection assembly 3 and temperature adjusting assembly 4 located in the cable side, multiple-point temperature detection assembly 3 is distributed along the length direction of cable, for detecting temperature distribution on cable, as shown in Figures 2-3As shown, the temperature sensor 31 is arranged on the two clamping components of the tensile measuring mechanism 2 and the flexible wrapping layer 42, corresponding to the two ends and the middle of the cable, for obtaining the real-time temperature of the two ends and the middle of the cable, and the temperature sensor 31 is electrically connected to the temperature adjusting assembly 4 through the control module, for controlling the temperature of the cable, wherein the temperature sensor 31 is a thin film thermocouple, which has a thin and flexible structure, can adapt to the deformation of the flexible wrapping layer 42, and has good heat conduction performance, can realize fast heat response, so that the thin film thermocouple can be completely attached to the surface of the cable after the cable is completely wrapped by the flexible wrapping layer 42 and the two ends are clamped by the clamping component, thereby ensuring the accuracy of temperature detection, and the electrode terminal of the thin film thermocouple is connected to the PLC control board through a wire, and the wire on the flexible wrapping layer 42 can be wrapped with a heat insulation material on the surface, then passes through the conductive substrate and the flexible wrapping layer 42, and then winds to the PLC control board for connection; and the temperature sensor 31 in the clamping component can pass through the fixing frame of the clamping component, and then wind to the PLC control board for connection.

[0025] And the plurality of temperature sensors 31 correspond to the two ends and the middle of the cable, continuously monitor the temperature change of the two ends and the middle of the cable during the stretching process, so as to realize accurate monitoring of the temperature of the cable, thereby ensuring uniform distribution of the temperature on the cable.

[0026] As shown in Figures 4-5 The temperature adjusting assembly 4 is used to contact and attach to the surface of the cable to warm or cool the cable to a set temperature, and includes two heat-conducting substrates 41, a flexible wrapping layer 42, a heating module 43, and a refrigeration module 44. The heat-conducting substrates 41 are installed on the inner walls of the two sides of the shell 1, and the sliding positions of the heat-conducting substrates 41 are controlled by the driving member 45, so that the flexible wrapping layer 42 on the surface of the heat-conducting substrate 41 keeps good contact with the surface of the cable and wraps the cable. The heat-conducting substrates 41 are embedded with the heating module 43 and the refrigeration module 44, which realize heating and cooling through electric heating wires and refrigeration fins 442, respectively. The flexible wrapping layer 42 is attached to the heat-conducting substrate 41, and includes a silica gel sleeve 421 attached to the heat-conducting substrate 41, and flexible heat-conducting sheets 422 distributed on the inner side of the silica gel sleeve 421, one end of the heat-conducting sheet 422 being attached to the heat-conducting substrate 41, and the silica gel sleeve 421 being filled with flexible heat-conducting material between the heat-conducting substrate 41, wherein the heat-conducting sheet 422 and the flexible heat-conducting material filled in the silica gel sleeve 421 can accelerate the heat on the heat-conducting substrate 41 to be quickly conducted to the silica gel sleeve 421, thereby ensuring that the heat is uniformly transmitted to the surface of the cable, realizing fast temperature adjustment and uniform heating or cooling of the cable, thereby avoiding the low efficiency problem of traditional air conduction heating, and greatly improving the temperature control response speed. The flexible heat-conducting material can be heat-conducting silica gel particles.

[0027] Meanwhile, the driving component 45 is a telescopic rod, which adjusts the position of the heat-conducting substrate 41 by a cylinder drive, ensuring that the wrapping layer can flexibly adapt to cables of different specifications and guarantee the stability of temperature regulation.

[0028] The heating module 43 includes several heat insulation strips disposed on the heat-conducting substrate 41. Each heat insulation strip is equipped with a heating wire connected to a power source via a control module. When the control module detects that the cable temperature is lower than a set value, the heating wire is energized and heated. The heat is transferred through the heat-conducting sheet 422 to the flexible wrapping layer 42, and then evenly transferred to the cable surface by the wrapping layer. The cooling module 44 includes several mounting strips 441 disposed on the heat-conducting substrate 41. Each mounting strip 441 is equipped with a cooling chip 442 connected to a power source via a control module. The cooling end of the cooling chip 442 is in contact with the heat-conducting substrate 41, and the heat dissipation end faces away from the heat-conducting substrate 41. When the cable surface temperature is higher than the set value, the cooling chip 442 activates the cooling function through the control module. The cooling end contacts the heat-conducting substrate 41, and the heat dissipation end faces outward. The heat is dissipated more quickly through the heat dissipation block 443, and the cooling temperature is transferred to the cable surface by the heat-conducting sheet 422.

[0029] And such Figure 5 As shown, mounting strips 441 and heat insulation strips are evenly spaced on the heat-conducting substrate 41, and heat dissipation blocks 443 connecting the heat dissipation ends of several cooling chips 442 are provided between several mounting strips 441. The spaced distribution of mounting strips 441 and heat insulation strips can ensure that the temperature is evenly distributed on the heat-conducting substrate 41 during cooling and heating, while the heat dissipation blocks 443 can improve the heat dissipation efficiency of the hot ends of the cooling chips 442.

[0030] At the start of the experiment, both ends of the wire and cable are securely fixed by the fixed clamping component 22 and the movable clamping component 23, respectively. The control module first collects the initial temperature of the cable through the multi-point temperature detection component 3 and sets the target temperature according to the experimental requirements. Then, the temperature control mechanism is activated, and the heat-conducting substrate 41 slides to the cable surface under the action of the driving component 45, so that the flexible wrapping layer 42 is tightly attached to the cable surface. The heating module 43 or the cooling module 44 starts to work, and quickly transfers heat or cold to the cable surface through the heat-conducting plate 422 to ensure that the cable is subjected to tensile testing at the set temperature.

[0031] Once the cable surface temperature reaches the set value, the tensile measuring mechanism 2 begins operation. The telescopic cylinder, connected to an external power source, drives the moving clamping component 23 away from the fixed clamping component 22, gradually stretching the cable. The multi-point temperature detection component 3 continuously monitors the temperature changes at both ends and the middle of the cable during the stretching process. The control module adjusts the operation of the temperature control component based on the temperature data to ensure a constant temperature. As the tensile force increases, the cable is gradually stretched until it breaks. The control module records the cable's elongation and breakage point, completing the experimental data acquisition.

[0032] The device realizes accurate temperature control of the cable surface by setting the multi-point temperature detection assembly 3 and the temperature adjusting assembly 4, and ensures uniform distribution of the temperature in the cable stretching experiment. The heat-conducting substrate 41 and the flexible wrapping layer 42 can closely adhere to the surface of the cable, the temperature is rapidly adjusted through the heating or refrigeration module 44, the problem of low efficiency of traditional air conduction heating is avoided, and the temperature control response speed is greatly improved. Meanwhile, the driving part 45 drives and adjusts the position of the heat-conducting substrate 41 through the air cylinder, so that the wrapping layer can flexibly adapt to cables of different specifications, and the stability of temperature adjustment is ensured. The functions of rapid temperature control, accurate stretching test and multi-point temperature monitoring of the device make the experimental results of the cable breaking elongation test more accurate and reliable, and effectively solve the problems of low temperature control efficiency and uneven experimental temperature in the prior art.

[0033] The above is only a preferred embodiment of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement, improvement, etc. within the design concept of the utility model should be included in the protection scope of the utility model.

Claims

1. An intelligent measuring device for the elongation at break of an electric cable, comprising a housing (1) in which a tensile measuring mechanism (2) for clamping and stretching the cable at both ends is arranged, and a control module, characterised in that, The shell (1) is also provided with a temperature control mechanism electrically connected with the control module, which comprises a multi-point temperature detection assembly (3) arranged on the side of the cable and a temperature adjusting assembly (4), the multi-point temperature detection assembly (3) is distributed along the length direction of the cable for detecting the temperature distribution on the cable, and the temperature adjusting assembly (4) is used for abuttingly contacting with the surface of the cable to warm or cool the cable to a set temperature.

2. The intelligent device for measuring elongation at break of an electric wire or cable according to claim 1, wherein The temperature adjusting assembly (4) comprises a pair of heat-conducting base plates (41) slidingly arranged in the shell (1), one side of the heat-conducting base plate (41) is provided with a flexible wrapping layer (42), the flexible wrapping layer (42) is made of heat-conducting material and internally provided with a heat-conducting sheet (422) connected with the heat-conducting base plate (41), and the heat-conducting base plate (41) is also provided with a heating module (43) and a refrigeration module (44) electrically connected with the control module, for heating or refrigerating the heat-conducting base plate (41).

3. The intelligent device for measuring elongation at break of an electrical wire or cable according to claim 2, wherein The flexible wrapping layer (42) comprises a silica gel sleeve (421) abutting the heat-conducting base plate (41), the inside of the silica gel sleeve (421) is distributed with flexible heat-conducting sheets (422), one end of the heat-conducting sheet (422) abuts the heat-conducting base plate (41), and the silica gel sleeve (421) and the heat-conducting base plate (41) are filled with flexible heat-conducting material.

4. The intelligent device for measuring elongation at break of an electrical wire or cable according to claim 2, wherein The heat-conducting base plates (41) are symmetrically arranged on the inner walls of the shell (1), and the heat-conducting base plates (41) and the shell (1) are provided with driving members (45) electrically connected with the control module, the driving members (45) are used for controlling the pair of heat-conducting base plates (41) to approach or move away from each other to drive the flexible wrapping layer (42) to wrap the cable.

5. The intelligent device for measuring elongation at break of an electrical wire or cable according to claim 2, wherein The heating module (43) comprises a plurality of heat insulation strips arranged on the heat-conducting base plate (41), and the heat insulation strips are provided with electric heating wires connected with the power supply through the control module.

6. The intelligent device for measuring elongation at break of an electrical wire or cable according to claim 5, wherein The refrigeration module (44) comprises a plurality of mounting strips (441) arranged on the heat-conducting base plate (41), and the mounting strips (441) are provided with refrigeration sheets (442) connected with the power supply through the control module, one end of the refrigeration sheet (442) abuts the heat-conducting base plate (41), and the other end is directed away from the heat-conducting base plate (41).

7. The intelligent device for measuring elongation at break of an electrical wire or cable according to claim 6, wherein The mounting strips (441) and the heat insulation strips are equidistantly and spacedly distributed on the heat-conducting base plate (41), and a plurality of the mounting strips (441) are provided with heat dissipation blocks (443) connected with the heat dissipation ends of a plurality of the refrigeration sheets (442).

8. The intelligent device for measuring elongation at break of an electrical wire or cable according to claim 2, wherein The multi-point temperature detection assembly (3) comprises a plurality of temperature sensors (31) distributed along the length direction of the cable, the temperature sensors (31) are arranged on the stretching measurement mechanism (2) and the flexible wrapping layer (42) and correspond to the two ends of the cable and the middle part of the cable, respectively, for obtaining the real-time temperature of the stretched parts of the two ends of the cable and the middle part of the cable, and the temperature sensors (31) are electrically connected with the temperature adjusting assembly (4) through the control module for controlling the temperature received by the cable.

9. The intelligent device for measuring elongation at break of an electrical wire or cable according to claim 8, wherein, The temperature sensor (31) is a thin film thermocouple abutting the flexible wrapping layer (42) and the clamping part of the stretching measurement mechanism (2).

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