High-temperature-resistant detection mechanism for photovoltaic cable

Abstract

The utility model relates to a photovoltaic cable high temperature resistance detection mechanism, which belongs to the field of photovoltaic cable detection, and comprises a detection table, the upper side and the lower side of the front surface of the detection table are provided with stretching mechanisms for performing high temperature deformation detection on a photovoltaic cable, and the middle part of the front surface of the detection table is provided with a heating mechanism for performing high temperature heating detection on the photovoltaic cable. According to the high-temperature-resistant detection mechanism for the photovoltaic cable, the stretching mechanism is arranged, after a photovoltaic cable sample penetrates through the heating mechanism, a hand wheel is rotated to drive a two-way screw rod to rotate, and then a clamping plate is driven by a moving block to move towards one side of the photovoltaic cable; when the two clamping plates make contact with the surface of a photovoltaic cable, photovoltaic cables of different sizes can be clamped and fixed, then after the photovoltaic cables are heated at high temperature, four air cylinders can be started, output shafts of the air cylinders on the left side and the right side stretch out to move in the opposite directions, then the clamped photovoltaic cables are stretched, and therefore the photovoltaic cables can be fixed. And a heating mechanism is matched to detect the high-temperature-resistant deformation effect of the photovoltaic cable at a high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cable detection, in particular to a high temperature resistance detection mechanism for photovoltaic cables. Background Art

[0002] Photovoltaic cables, also known as photovoltaic special cables, are mainly used in photovoltaic power stations. They have the advantages of high temperature resistance, cold resistance, oil resistance, acid and alkali resistance, UV resistance, flame retardancy, environmental protection, and long service life. Therefore, they are mainly used in harsh climatic conditions with a service life of more than 25 years. Their characteristics are determined by their special insulation materials and sheath materials. Since photovoltaic cables may undergo thermal deformation when operating in a high temperature environment, it is necessary to test the thermal deformation performance of photovoltaic cables to ensure the quality of the product during normal operation. During the use and operation of photovoltaic cables, bending and rapid temperature changes will occur. Due to the different thermal expansion coefficients of the conductor and the insulating sheath material, the insulating sheath is easily broken in the case of a sudden temperature change, resulting in a short circuit accident. Therefore, the insulating sheath needs to be subjected to a thermal shock test.

[0003] As disclosed in Chinese Patent Publication No. (CN219320061U), a detection device for high-temperature resistant cable production includes a detection platform and a cable detection box, wherein table legs are installed at the bottom of the detection platform, a cable detection box is placed above the detection platform, a buzzer alarm, a switch button, an alarm light and a charging interface are arranged on the shell of the cable detection box, a cable body is placed between the cable detection box and the detection platform, two motors are arranged above the detection platform, the motor drives the rotating drum to rotate through a transmission turntable, a friction drag ring belt is arranged on the rotating drum, and the cable body is sandwiched between the two friction drag ring belts. This detection device for high-temperature resistant cable production can detect whether the inside of the epidermis is filled with cables by elastic extrusion, thereby performing streamlined and fully controllable detection of high-temperature cables, and has the advantages of simple structure, low cost, easy maintenance and high precision.

[0004] However, as mentioned in the above patent, there is still a problem of poor detection effect of tensile deformation of photovoltaic cables at high temperatures. For example, in the above patent, elastic extrusion is used to detect whether the inside of the skin is filled with cables, so as to perform streamlined and fully controllable detection of high-temperature cables. However, this method is not convenient for testing the performance of cables under high temperature conditions, and thus it is not convenient to understand the performance of cables, which affects the subsequent laying and use performance of photovoltaic sites in mountainous areas. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a high temperature resistance detection mechanism for photovoltaic cables, which has the advantages of high high temperature resistance detection effect, and solves the problem of poor detection effect of tensile deformation of photovoltaic cables at high temperatures in the existing technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a photovoltaic cable high temperature resistance detection mechanism, comprising a detection platform, the upper and lower sides of the front of the detection platform are provided with a stretching mechanism for performing high temperature deformation detection on the photovoltaic cable, and the middle part of the front of the detection platform is provided with a heating mechanism for performing high temperature heating detection on the photovoltaic cable;

[0007] The stretching mechanism includes four cylinders, four push plates, four connecting blocks, two bidirectional screws, four moving blocks and four clamping plates. The four cylinders are respectively fixed to the upper and lower sides of the front of the detection platform, the four push plates are respectively fixed to the outer sides of the output shafts of the four cylinders, the four connecting blocks are respectively fixed to the opposite sides of the left and right push plates, threaded holes are opened on the outer sides of the four connecting blocks, the two bidirectional screws are respectively threadedly connected to the inner walls of the threaded holes on the left and right sides, the four moving blocks are respectively threadedly connected to the outer sides of the two bidirectional screws, and the four clamping plates are respectively fixed to the front sides of the four moving blocks.

[0008] Furthermore, a hand wheel is fixed to the top end of the two bidirectional screws, and the clamping plate is in an arc shape.

[0009] Furthermore, a slide rail is fixed to the opposite side of the upper and lower connecting blocks, a slide groove is provided on the back of the moving block, and the moving block is slidably connected to the outer side of the slide rail through the slide groove.

[0010] Furthermore, anti-slip pads are fixed between opposite sides of the clamping plates on the upper and lower sides.

[0011] Furthermore, the heating mechanism includes a base plate, two heating frames, a plurality of electric heating tubes, a heat radiation plate, a top plate and an infrared thermal imager. The base plate is fixed to the middle of the front of the detection platform, the upper and lower sides of the front of the two heating frames are fixed, the plurality of electric heating tubes are respectively fixed between the left and right inner walls of the two heating frames, the heat radiation plate is fixed to the front of the base plate, between the top plate and the opposite side of the two heating frames, and the infrared thermal imager is fixed to the back of the top plate.

[0012] Furthermore, temperature sensors are fixed to the inner walls of the two heating frames, and heat insulation covers are fixed to the outer sides of the two heating frames.

[0013] Furthermore, two air inlets are provided on opposite sides of the two heating frames, and circulating fans are fixed on the inner walls of the four air inlets.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The photovoltaic cable high temperature resistance testing mechanism is equipped with a stretching mechanism. After the photovoltaic cable sample passes through the heating mechanism, the two hand wheels are rotated to drive the bidirectional screw to rotate, and then the moving block drives the clamping plate to move to one side of the photovoltaic cable. When the two clamping plates are in contact with the surface of the photovoltaic cable, photovoltaic cables of different sizes can be clamped and fixed. Then, after the photovoltaic cable is heated at high temperature, the four cylinders can be started, and the cylinder output shafts on the left and right sides are extended to move in opposite directions, thereby stretching the clamped photovoltaic cable to cooperate with the heating mechanism to detect the high temperature resistance deformation effect of the photovoltaic cable under high temperature.

[0016] 2. The photovoltaic cable high temperature resistance detection mechanism is equipped with a heating mechanism. The photovoltaic cable sample is passed through and placed between two heating frames. The heating frame is then heated by an electric heating tube to heat the cable. The temperature sensor detects and maintains the appropriate heating temperature. At the same time, the heat is dissipated through the heat radiation plate. During the heating process, four circulation fans are started to draw air into the space between the two heating frames to drive the hot air circulation to evenly heat the surface of the photovoltaic cable. The temperature distribution of the cable is monitored by an infrared thermal imager, so as to monitor the high temperature resistance of the cable at different temperatures through infrared thermal imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the stretching mechanism of the utility model;

[0019] Figure 3 It is a schematic diagram of the heating mechanism of the utility model.

[0020] In the figure: 1 testing table, 2 stretching mechanism, 21 cylinder, 22 push plate, 23 connecting block, 24 bidirectional screw, 25 moving block, 26 clamping plate, 27 threaded hole, 28 hand wheel, 29 slide rail, 3 heating mechanism, 31 bottom plate, 32 heating frame, 33 electric heating tube, 34 heat radiation plate, 35 top plate, 36 infrared thermal imager, 37 circulating fan. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 A photovoltaic cable high temperature resistance testing mechanism in this embodiment includes a testing platform 1, and a stretching mechanism 2 for performing high temperature deformation testing on the photovoltaic cable is provided on the upper and lower sides of the front of the testing platform 1, and a heating mechanism 3 for performing high temperature heating testing on the photovoltaic cable is provided in the middle of the front of the testing platform 1.

[0023] See also Figure 2 In order to perform high temperature tensile testing on photovoltaic cables, the stretching mechanism 2 in this embodiment includes four cylinders 21, four push plates 22, four connecting blocks 23, two bidirectional screws 24, four moving blocks 25 and four clamping plates 26. The four cylinders 21 are respectively fixed to the upper and lower sides of the front of the testing platform 1, the four push plates 22 are respectively fixed to the outer sides of the output shafts of the four cylinders 21, and the four connecting blocks 23 are respectively fixed to the opposite sides of the left and right push plates 22. After the photovoltaic cable sample passes through the heating mechanism 3, it is rotated The two hand wheels 28 are turned to drive the bidirectional screw 24 to rotate. The outer sides of the four connecting blocks 23 are provided with threaded holes 27. The two bidirectional screws 24 are threadedly connected to the inner walls of the threaded holes 27 on the left and right sides respectively. The four moving blocks 25 are threadedly connected to the outer sides of the two bidirectional screws 24 respectively. The bidirectional screws 24 drive the moving blocks 25 to move horizontally along the screw surfaces in cooperation with the slide rails 29, and then the moving blocks 25 drive the clamping plates 26 to move toward one side of the photovoltaic cable. The four clamping plates 26 are fixed to the front sides of the four moving blocks 25 respectively.

[0024] In this embodiment, a hand wheel 28 is fixed to the top of the two bidirectional screws 24, and the clamping plate 26 is in the shape of an arc. When the two clamping plates 26 are in contact with the surface of the photovoltaic cable, photovoltaic cables of different sizes can be clamped and fixed. The upper and lower connecting blocks 23 are fixed with slide rails 29 on opposite sides. A slide groove is provided on the back of the moving block 25, and the moving block 25 is slidably connected to the outer side of the slide rail 29 through the slide groove. Anti-slip pads are fixed between the opposite sides of the upper and lower clamping plates 26. After the photovoltaic cable is heated at high temperature, the four cylinders 21 can be started, and the output shafts of the cylinders 21 on the left and right sides extend out to move in opposite directions, thereby stretching the clamped photovoltaic cable to cooperate with the heating mechanism 3 to detect the high temperature deformation resistance effect of the photovoltaic cable under high temperature.

[0025] See also Figure 3In order to perform heating detection on the photovoltaic cable, the heating mechanism 3 in this embodiment includes a bottom plate 31, two heating frames 32, a plurality of electric heating tubes 33, a heat radiation plate 34, a top plate 35 and an infrared thermal imager 36. The bottom plate 31 is fixed to the middle of the front of the detection platform 1, and the upper and lower sides of the front of the two heating frames 32 are fixed. The photovoltaic cable sample is passed through and placed between the two heating frames 32, and then the heating frames 32 are heated by the electric heating tubes 33 to heat the cables. The plurality of electric heating tubes 33 are respectively fixed between the inner walls of the left and right sides of the two heating frames 32, the heat radiation plate 34 is fixed to the front of the bottom plate 31, the top plate 35 is between the opposite sides of the two heating frames 32, and the infrared thermal imager 36 is fixed to the back of the top plate 35. The temperature distribution of the cable is monitored by the infrared thermal imager 36, so as to monitor the high temperature resistance of the cable at different temperatures through infrared thermal imaging.

[0026] In this embodiment, temperature sensors are fixed on the inner walls of the two heating frames 32, and the appropriate heating temperature is maintained through detection by the temperature sensors. Heat insulation covers are fixed on the outer sides of the two heating frames 32. Two air inlets are provided on the opposite sides of the two heating frames 32, and circulating fans 37 are fixed on the inner walls of the four air inlets. Heat is dissipated through the heat radiation plate 34. During the heating process, the four circulating fans 37 are started to draw air into between the two heating frames 32 to drive the hot air circulation to evenly heat the surface of the photovoltaic cable.

[0027] The working principle of the above embodiment is:

[0028] (1) When the photovoltaic cable is used for high-temperature tensile testing, after the photovoltaic cable sample passes through the heating mechanism 3, the two hand wheels 28 are rotated to drive the bidirectional screw 24 to rotate, and then the bidirectional screw 24 drives the moving block 25 to move horizontally along the surface of the screw with the cooperation of the slide rail 29, and then the moving block 25 drives the clamping plate 26 to move toward one side of the photovoltaic cable. When the two clamping plates 26 contact the surface of the photovoltaic cable, photovoltaic cables of different sizes can be clamped and fixed. Then, after the photovoltaic cable is heated at high temperature, the four cylinders 21 can be started, and the output shafts of the cylinders 21 on the left and right sides extend to move in opposite directions, thereby stretching the clamped photovoltaic cable to cooperate with the heating mechanism 3 to detect the high-temperature deformation effect of the photovoltaic cable under high temperature.

[0029] (2) When the photovoltaic cable is used for heating detection, the photovoltaic cable sample is passed through and placed between the two heating frames 32, and then the heating frame 32 is heated by the electric heating tube 33 to heat the cable. The temperature sensor detects and maintains the appropriate heating temperature. At the same time, the heat is dissipated through the heat radiation plate 34. During the heating process, four circulation fans 37 are started to draw air into the space between the two heating frames 32 to drive the hot air circulation to evenly heat the surface of the photovoltaic cable. The temperature distribution of the cable is monitored by the infrared thermal imager 36, so as to monitor the high temperature resistance of the cable at different temperatures through infrared thermal imaging.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A photovoltaic cable high temperature resistance testing mechanism, comprising a testing platform (1), characterized in that: The upper and lower sides of the front of the test platform (1) are provided with stretching mechanisms (2) for performing high-temperature deformation testing on photovoltaic cables, and the middle of the front of the test platform (1) is provided with a heating mechanism (3) for performing high-temperature heating testing on photovoltaic cables; The stretching mechanism (2) comprises four cylinders (21), four push plates (22), four connecting blocks (23), two bidirectional screw rods (24), four moving blocks (25) and four clamping plates (26). The four cylinders (21) are respectively fixed to the upper and lower sides of the front of the detection platform (1); the four push plates (22) are respectively fixed to the outer sides of the output shafts of the four cylinders (21); the four connecting blocks (23) are respectively fixed to the opposite sides of the left and right push plates (22); the outer sides of the four connecting blocks (23) are provided with threaded holes (27); the two bidirectional screw rods (24) are respectively threadedly connected to the inner walls of the threaded holes (27) on the left and right sides; the four moving blocks (25) are respectively threadedly connected to the outer sides of the two bidirectional screw rods (24); and the four clamping plates (26) are respectively fixed to the front sides of the four moving blocks (25).

2. A photovoltaic cable high temperature resistance detection mechanism according to claim 1, characterized in that: A hand wheel (28) is fixed to the top of each of the two bidirectional screw rods (24), and the clamping plate (26) is in an arc shape.

3. A photovoltaic cable high temperature resistance detection mechanism according to claim 1, characterized in that: A slide rail (29) is fixed to the opposite side of the upper and lower connecting blocks (23), a slide groove is provided on the back of the moving block (25), and the moving block (25) is slidably connected to the outer side of the slide rail (29) via the slide groove.

4. A photovoltaic cable high temperature resistance detection mechanism according to claim 1, characterized in that: Anti-skid pads are fixed between the opposite sides of the clamping plates (26) at the upper and lower sides.

5. A photovoltaic cable high temperature resistance detection mechanism according to claim 1, characterized in that: The heating mechanism (3) comprises a bottom plate (31), two heating frames (32), a plurality of electric heating tubes (33), a heat radiation plate (34), a top plate (35) and an infrared thermal imager (36); the bottom plate (31) is fixed to the middle of the front of the detection platform (1); the two heating frames (32) are fixed to the upper and lower sides of the front; the plurality of electric heating tubes (33) are respectively fixed to the left and right inner walls of the two heating frames (32); the heat radiation plate (34) is fixed to the front of the bottom plate (31); the top plate (35) is fixed to the side opposite to the two heating frames (32); and the infrared thermal imager (36) is fixed to the back of the top plate (35).

6. A photovoltaic cable high temperature resistance detection mechanism according to claim 5, characterized in that: Temperature sensors are fixed to the inner walls of the two heating frames (32), and heat insulation covers are fixed to the outer sides of the two heating frames (32).

7. A photovoltaic cable high temperature resistance detection mechanism according to claim 5, characterized in that: Two air inlets are provided on opposite sides of the two heating frames (32), and circulating fans (37) are fixed to the inner walls of the four air inlets.

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