Cable low-temperature suspension testing device

Abstract

The utility model discloses a cable low-temperature suspension testing device, which comprises a low-temperature box body, a low-temperature suspension experiment device is arranged in the low-temperature box body; the low-temperature suspension experiment device comprises a bottom plate; a cable fixing support frame is arranged on the bottom plate; a sample cable is placed on the cable fixing bracket; a supporting plate lifting mechanism is arranged between the cable fixing brackets; the supporting plate lifting mechanism comprises a lifting motor and a cable lifting supporting plate; vertical lifting mechanisms are arranged on the left and right sides of the sample cable; a laser displacement sensor and a pressure sensor are arranged on the vertical lifting mechanism, and the laser displacement sensor is used for measuring the specific displacement of the sample cable during drooping; the pressure sensor is used for controlling the pressure applied by the vertical lifting mechanisms on the two sides to the sample cable so as to measure the displacement of the sample cable under the fixed pressure. The device is simple in structure and low in cost, can obtain an accurate measurement result, and provides an accurate test result for a production process. A large number of defective products caused by inaccurate measurement are avoided, and the production cost is greatly saved.

Description

Technical Field

[0001] This utility model relates to a low-temperature cable sag testing device, belonging to the technical field of wire and cable testing equipment. Background Technology

[0002] With the development of technology and the increase in electricity demand, the application of cryogenic cables has gradually gained attention. Especially in extremely cold northern regions, the sag performance of cables in low-temperature environments directly affects their service life and the reliability of power transmission. However, the market currently lacks effective tools and equipment to accurately measure the sag performance of cryogenic cables, forcing manufacturers to rely on simple manual testing methods. This method not only has significant errors but also fails to provide accurate parameter indicators, posing a considerable challenge to cable research and development and production.

[0003] In low-temperature environments, the physical properties of cables change significantly. Materials that should be flexible may become rigid and brittle, preventing the cable from bending properly and thus affecting its performance in practical applications. Therefore, developing cable products that can withstand extreme cold is particularly important. For this reason, manufacturers urgently need specialized testing equipment to systematically evaluate the low-temperature performance of cables. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a cable low-temperature sag testing device, thereby solving the aforementioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a low-temperature cable sag testing device, comprising a low-temperature chamber; a low-temperature sag testing device is installed inside the low-temperature chamber; the low-temperature sag testing device includes a base plate; a cable fixing support frame is installed on the base plate; a sample cable is placed on the cable fixing support frame; a pallet lifting mechanism is installed between the cable fixing supports; the pallet lifting mechanism includes a lifting motor and a cable lifting pallet; vertical lifting mechanisms are installed on the left and right sides of the sample cable; a laser displacement sensor and a pressure sensor are installed on the vertical lifting mechanism, the laser displacement sensor is used to measure the specific displacement value of the sample cable when it sags; the pressure sensor is used to control the pressure applied to the sample cable by the vertical lifting mechanisms on both sides, so as to measure the displacement value of the sample cable under a fixed pressure.

[0006] Furthermore, the cable fixing support frame includes a supporting base plate; a vertically arranged upright plate is connected to the supporting base plate; the supporting base plate is fixed to the base plate by bolts; a triangular reinforcing rib plate is connected between the upright plate and the supporting base plate; a cable fixing plate is connected to the upper end of the upright plate; an arc-shaped slot is provided on the cable fixing plate for placing the sample cable; the cable fixing plate is fixedly connected to the upper end of the upright plate by bolts.

[0007] Furthermore, the vertical lifting mechanism includes a side plate bracket; upper and lower baffles are arranged on the side of the side plate bracket near the sample cable; a guide post and a threaded rod are arranged between the upper and lower baffles; a slider is arranged on the guide post and the threaded rod; an L-shaped plate is connected to one side of the slider; a pressure sensor is arranged on the L-shaped plate; a pressure rod is also arranged on one side of the slider; a pressure sensor is connected to one side of the pressure rod; the pressure rod is located below the pressure sensor.

[0008] The beneficial effects of this utility model are:

[0009] This device enables convenient and quantitative measurement of the low-temperature sag performance of cables; at the same time, the cable can be frozen at low temperature in a straight state through the support plate assembly, avoiding data deviation caused by the cable naturally bending and freezing.

[0010] By setting a replaceable cable fixing plate, it can be adjusted according to the diameter requirements of the cable. It is easy to disassemble and the testing device has good versatility, enabling low-temperature suspension testing of cables with different diameters.

[0011] This device boasts advantages such as simple structure and low cost, and can obtain accurate measurement results, providing precise testing results for the production process. It avoids a large number of defective products caused by inaccurate measurements, significantly saving production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the low-temperature suspension experimental device of this utility model;

[0014] Figure 3 This is a schematic diagram of the cable's position and structure when it is horizontal, according to this utility model.

[0015] Figure 4 This is a schematic diagram of the positional structure of the cable under pressure according to this utility model.

[0016] In the diagram: 1. Cable fixing bracket, 11. Support base plate, 12. Vertical plate, 13. Triangular reinforcing rib plate, 14. Cable fixing plate, 141. Arc-shaped groove, 2. Cable lifting tray, 3. Sample cable, 4. Laser displacement sensor, 5. Pressure sensor, 6. Vertical lifting mechanism, 61. Side plate bracket, 62. Upper and lower baffles, 63. Threaded rod, 64. Slider, 65. L-shaped plate, 66. Pressure rod, 7. Tray lifting mechanism, 8. Low temperature chamber. Detailed Implementation

[0017] 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 the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0019] like Figures 1-4 As shown, a low-temperature cable sag testing device includes a low-temperature chamber 8; a low-temperature sag testing device is installed inside the low-temperature chamber 8; the low-temperature sag testing device includes a base plate; a cable fixing support frame 1 is installed on the base plate; a sample cable 3 is placed on the cable fixing support frame 1; a pallet lifting mechanism 7 is installed between the cable fixing supports 1; the pallet lifting mechanism 7 includes a lifting motor 71 and a cable lifting pallet 2; vertical lifting mechanisms 6 are installed on the left and right sides of the sample cable 3; a laser displacement sensor 4 and a pressure sensor 5 are installed on the vertical lifting mechanism 6; the laser displacement sensor 4 is used to measure the specific displacement value of the sample cable 3 when it sags; the pressure sensor 5 is used to control the pressure applied to the sample cable 3 by the vertical lifting mechanisms 6 on both sides, so as to measure the displacement value of the sample cable 3 under a fixed pressure.

[0020] In a preferred embodiment, the cable fixing support frame 1 includes a supporting base plate 11; a vertically arranged upright plate 12 is connected to the supporting base plate 11; the supporting base plate 11 is fixed to the base plate by bolts; a triangular reinforcing rib plate 13 is connected between the upright plate 12 and the supporting base plate 11; a cable fixing plate 14 is connected to the upper end of the upright plate 12; an arc-shaped slot 141 is provided on the cable fixing plate 14 for placing the sample cable 3; the cable fixing plate 14 is fixedly connected to the upper end of the upright plate 12 by bolts.

[0021] In this preferred embodiment, the vertical lifting mechanism 6 includes a side plate bracket 61; upper and lower baffles 62 are arranged on the side of the side plate bracket 61 near the sample cable 3; a guide post and a threaded rod 63 are arranged between the upper and lower baffles 62; a slider 64 is arranged on the guide post and the threaded rod 63; an L-shaped plate 65 is connected to one side of the slider 64; a pressure sensor 5 is arranged on the L-shaped plate 65; a pressure rod 66 is also arranged on one side of the slider 64; a pressure sensor 5 is connected to one side of the pressure rod 66; the pressure rod 66 is located below the pressure sensor 5.

[0022] This device is mainly composed of: two sets of vertical lifting mechanisms 6, one set of cable tray lifting mechanism 7, and cable fixing brackets at both ends 1.

[0023] The specific experimental procedure is as follows:

[0024] First, raise the pallet lifting mechanism 7 on the device to its highest position, at which point the height of the cable lifting pallet 2 is consistent with the bottom of the cable fixing brackets 1 on both sides. Then, place the sample cable 3 into the arc-shaped slot 141 of the cable fixing plate 14, at which point the cable is in a horizontal state. Subsequently, turn on the low-temperature chamber 8, set it to the required ambient temperature, and maintain it for a period of time. The displacement coordinate value of the highest point on the upper surface of the cable can be detected in real time by the laser displacement sensor 4. Then, lower the cable lifting pallet 2 to its lowest height. At this time, due to the self-weight of the sample cable 3, the two laser displacement sensors 4 can measure the specific displacement value of the two sample cables 3. The larger the sag value, the more flexible the cable is at low temperature. When the cable temperature is too low, the cable cannot sag naturally. At this time, the two sets of vertical lifting mechanisms 6 are activated. The pressure sensor 5 can control the pressure applied to the cable by the vertical lifting mechanisms 6 on both sides to measure the displacement value of the sample cable 3 under fixed pressure. The measurement result H value can then be displayed in real time on the screen.

[0025] This device boasts advantages such as simple structure and low cost, and can obtain accurate measurement results, providing precise testing results for the production process. It avoids a large number of defective products caused by inaccurate measurements, significantly saving production costs.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable low-temperature suspension testing device, characterized in that, The system includes a low-temperature chamber (8); a low-temperature suspension test device is installed inside the low-temperature chamber (8); the low-temperature suspension test device includes a base plate; a cable fixing bracket (1) is installed on the base plate; a sample cable (3) is placed on the cable fixing bracket (1); a pallet lifting mechanism (7) is installed between the cable fixing brackets (1); the pallet lifting mechanism (7) includes a lifting motor (71) and a cable lifting pallet (2); vertical lifting mechanisms (6) are installed on the left and right sides of the sample cable (3); a laser displacement sensor (4) and a pressure sensor (5) are installed on the vertical lifting mechanism (6); the laser displacement sensor (4) is used to measure the specific displacement value of the sample cable (3) when it is hanging; the pressure sensor (5) is used to control the pressure applied to the sample cable (3) by the vertical lifting mechanisms (6) on both sides, so as to measure the displacement value of the sample cable (3) under a fixed pressure.

2. The cable low-temperature suspension testing device according to claim 1, characterized in that, The cable fixing bracket (1) includes a supporting base plate (11); a vertically arranged upright plate (12) is connected to the supporting base plate (11); the supporting base plate (11) is fixed to the base plate by bolts; a triangular reinforcing rib plate (13) is connected between the upright plate (12) and the supporting base plate (11); a cable fixing plate (14) is connected to the upper end of the upright plate (12); an arc-shaped slot (141) is provided on the cable fixing plate (14), which is used to place the sample cable (3); the cable fixing plate (14) is fixedly connected to the upper end of the upright plate (12) by bolts.

3. The cable low-temperature suspension testing device according to claim 1, characterized in that, The vertical lifting mechanism (6) includes a side plate bracket (61); the side plate bracket (61) has upper and lower baffles (62) arranged on the side near the sample cable (3); a guide post and a threaded rod (63) are arranged between the upper and lower baffles (62); a slider (64) is arranged on the guide post and the threaded rod (63); an L-shaped plate (65) is connected to one side of the slider (64); a pressure sensor (5) is arranged on the L-shaped plate (65); a pressure rod (66) is also arranged on one side of the slider (64); a pressure sensor (5) is connected to one side of the pressure rod (66); the pressure rod (66) is located below the pressure sensor (5).

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