Online cable conductor resistance measuring device

Abstract

The utility model relates to the field of conductor resistance measurement, in particular to an online cable conductor resistance measuring device, which comprises a resistance measuring instrument, a bridge clamp and a bath. The bath comprises a bathing pool, a backflow pool and a storage pool, two ends of the bathing pool are respectively provided with a first notch convenient for a wire to pass through, and a waterproof sealing piece matched with the wire is arranged in each first notch; the two backflow pools are located at the two ends of the bathing pool respectively, second notches are formed in the sides, away from the bathing pool, of the backflow pools, and a plurality of water return holes communicated with the storage pool are formed in the bottoms of the backflow pools; a refrigerating sheet is arranged at the bottom of the storage pool, a medium circulating device and an electric heating pipe are arranged in the storage pool, and a water outlet of the medium circulating device is communicated with the bathing pool. According to the utility model, the on-line measurement of the wire resistance can be realized without cutting the cable conductor, and the overall structure enables the resistance measurement of the cable conductor to be more efficient.

Description

Technical Field

[0001] The utility model relates to the field of conductor resistance measurement, in particular to an online cable conductor resistance measuring device. Background Art

[0002] In the prior art, Chinese utility model application number CN202323610819.3 discloses a constant-temperature conductor resistance measuring device. The device immerses the conductor in a stable insulating heat-conducting medium. The insulating heat-conducting medium can quickly adjust the temperature of the conductor itself to the experimental requirements. At the same time, the temperature control device constantly controls the temperature of the insulating heat-conducting medium in the bath, which can effectively improve the accuracy of the conductor resistance measurement.

[0003] However, when using this device to measure the resistance of a conductor, it is necessary to cut a portion of the long conductor for measurement, and its own structure cannot realize the resistance measurement of a continuous online cable conductor. Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to provide an online cable conductor resistance measuring device, which adopts the following technical solutions:

[0005] The utility model provides an online cable conductor resistance measuring device, comprising a resistance measuring instrument, a bridge fixture and a bath, wherein the bridge fixture comprises two potential end fixtures and two current end fixtures, both of which are electrically connected to the resistance measuring instrument; the two current end fixtures are respectively arranged at both ends of the bath;

[0006] The bathtub includes a bathtub, a reflux pool and a storage pool. The potential end clamp is arranged in the bathtub. Both ends of the bathtub are provided with a first slot for facilitating the passage of the wire. The first slot is provided with a waterproof seal that cooperates with the wire. There are two reflux pools, which are respectively located at the two ends of the bathtub. The reflux pool is connected with the bathtub through the first slot. The reflux pool is provided with a second slot on the side away from the bathtub and corresponding to the first slot for facilitating the passage of the wire. The bottom of the reflux pool is provided with several return water holes that are connected with the storage pool. The storage pool is located below the bathtub. A cooling plate is provided at the bottom of the storage pool. A medium circulation device and an electric heating pipe are provided in the storage pool. The water outlet inlet of the medium circulation device is connected with the bathtub.

[0007] Preferably, a lifting device is provided at the bottom of the bathtub, and the body of the lifting device is fixed on the machine body; the lifting device is an electric cylinder or an oil cylinder.

[0008] Preferably, the resistance measuring instrument is arranged at the front of the machine body.

[0009] Preferably, the medium circulation device comprises a circulation pump, which is disposed in the storage tank, and an outlet of the circulation pump is connected to the bathing tank through a pipeline.

[0010] Preferably, the waterproof seal is a high-density sponge sleeve, and the outer wall of the sponge sleeve is axially provided with a cutout extending to the central hole.

[0011] Preferably, a detachable top cover is provided on the top of the bathtub.

[0012] Compared with the prior art, the beneficial technical effects of the present invention are:

[0013] The utility model can realize online measurement of the wire resistance without cutting the cable conductor, and the overall structure makes the cable conductor resistance measurement more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a front view of the utility model's online cable conductor resistance measuring device;

[0016] Figure 2 This is a schematic structural diagram of the bathtub of the utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the bathtub of the present invention.

[0018] Explanation of the accompanying symbols: 1. Resistance meter; 2. Bridge clamp; 201. Potential end clamp; 202. Current end clamp; 3. Bath; 301. Bath; 302. Reflux tank; 303. Storage tank; 304. First notch; 305. Waterproof seal; 306. Second notch; 307. Return hole; 308. Refrigeration plate; 309. Medium circulation device; 309-1. Circulation pump; 309-2. Pipeline; 310. Electric heating tube; 4. Lifting device; 5. Wire; 6. Machine body; 7. Top cover. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1As shown, this embodiment discloses an online cable conductor resistance measurement device, including a resistance measuring instrument 1 and a bridge fixture 2. The bridge fixture 2 includes two potential end fixtures 201 and two current end fixtures 202. Both the potential end fixtures 201 and the current end fixtures 202 are electrically connected to the resistance measuring instrument 1. The bridge fixture 2 is conventional, and those skilled in the art may use existing products or design their own structure.

[0021] The two potential end fixtures 201 are arranged in the bath 3 , and the two current end fixtures 202 are respectively arranged at both ends of the bath 3 . A fixture base is fixed at both ends of the bath 3 , and the current end fixtures 202 are fixed on the fixture base.

[0022] like Figure 2 and 3 As shown, the bath 3 includes a bath 301, a reflux pool 302 and a storage pool 303. The two potential end clamps 201 are spaced apart in the bath 301. Both ends of the bath 301 are provided with a first notch 304 for the wire 5 to pass through. The first notch 304 is provided with a waterproof seal 305 that cooperates with the wire 5. There are two reflux pools 302, which are respectively located at both ends of the bath 301. The reflux pool 302 is connected to the bath 301 through the first notch 304. The reflux pool 302 is in the A second slot 306 is provided on one side away from the bathing pool 301 and at a position corresponding to the first slot 304, for facilitating the passage of the wire 5. The bottom of the reflux pool 302 is provided with a plurality of return water holes 307 connected to the storage pool 303; the storage pool 303 is located below the bathing pool 301, and a cooling plate 308 is provided at the bottom of the storage pool 303. A medium circulation device 309 and an electric heating pipe 310 are provided in the storage pool 303, and the water inlet of the medium circulation device 309 is connected to the bathing pool 301.

[0023] The medium in storage tank 303 is pure water or oil. A temperature sensor is installed in storage tank 303 and is electrically connected to a temperature control device. The temperature control device receives a detection signal from the temperature sensor and controls the operation of the electric heating tube 310 and the cooling plate 308. It should be noted that a cooling plate, also known as a thermoelectric semiconductor cooling component or Peltier, refers to a thermally conductive patch with two sides: one absorbing heat and the other dissipating heat. This type of cooling plate is an existing product.

[0024] In this embodiment, the medium circulation device 309 includes a circulation pump 309 - 1 . The circulation pump 309 - 1 is disposed in the storage tank 303 . The outlet of the circulation pump 309 - 1 is connected to the bathing tank 301 through a pipe 309 - 2 .

[0025] In this embodiment, the waterproof sealing member 305 is a high-density sponge sleeve, and an outer wall of the sponge sleeve is provided with a cutout extending to the central hole along the axial direction.

[0026] In this embodiment, the first notch 304 and the second notch 306 are both U-shaped.

[0027] like Figure 1 As shown, a lifting device 4 is provided at the bottom of the bathtub 3. This device controls the entire bathtub 3 to move upward and downward. The lifting device 4 is an electric cylinder or a hydraulic cylinder. The main body of the lifting device 4 is fixed to the machine body 6, and the telescopic end of the lifting device 4 is connected to the bottom of the bathtub 3.

[0028] In this embodiment, the resistance measuring instrument 1 is arranged at the front of the body 6 .

[0029] In this embodiment, a detachable top cover 7 is provided on the top of the bathtub 3 for keeping the bathtub 3 warm.

[0030] The working principle of this utility model is as follows:

[0031] The continuously produced wire is conveyed through the wire wheels on both sides of the machine body 6. When the resistance of a certain section of the wire 5 needs to be measured, the wire conveyance needs to be paused, and the lifting device 4 is controlled to lift the bath 3. The wire 5 is placed horizontally in the bath 3 through the first notch 304 and the second notch 306. When the wire 5 is placed horizontally in the first notch 304, the waterproof seal 305 is installed on the wire 5 at the position corresponding to the first notch 304 (the waterproof seal 305 can be installed on the wire 5 through the cutout on the outer wall). The bridge clamp 2 clamps and fixes the wire 5 (both the current end clamp 202 and the potential end clamp 201 clamp and help fix the wire 5). After that, the top cover 7 is placed on the bath 3. The temperature control device controls the temperature of the medium in the storage tank 303 to maintain a stable value (generally controlled at 20±1°C). The medium circulation device 309 transports the medium into the bath 301. Since the waterproof seal 305 is a high-density sponge sleeve, it can prevent the medium from passing through the first slot 304, so that the medium completely submerges the wire 5. Then the resistance measuring instrument 1 can measure the resistance of the wire 5 in the bath 301.

[0032] After measuring the resistance of wire 5, top cover 7 is removed, bridge fixture 2 is opened, and lifting device 4 is controlled to lower bath 3 as a whole, separating bath 3 from wire 5. When first notch 304 is released from waterproof seal 305, the medium in bath 301 can flow through first notch 304 into recirculation tank 302 and then through return hole 307 at the bottom of recirculation tank 302 into storage tank 303. Once bath 3 is completely separated from wire 5, waterproof seal 305 is removed from wire 5, allowing wire 5 to continue to be transported.

[0033] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. An online cable conductor resistance measuring device, comprising a resistance measuring instrument (1) and a bridge fixture (2), wherein the bridge fixture (2) comprises two potential end fixtures (201) and two current end fixtures (202), wherein the potential end fixtures (201) and the current end fixtures (202) are both electrically connected to the resistance measuring instrument (1), and characterized in that: It also includes a bathtub (3), and the two current end clamps (202) are respectively arranged at two ends of the bathtub (3); The bath (3) comprises a bath (301), a reflow pool (302) and a storage pool (303); the potential end fixture (201) is arranged in the bath (301); both ends of the bath (301) are provided with a first notch (304) for facilitating the passage of the wire (5); the first notch (304) is provided with a waterproof seal (305) that cooperates with the wire (5); the number of the reflow pools (302) is two and they are respectively located at the two ends of the bath (301); the reflow pools (302) are connected to the bath (301) through the first notch (304); the reflow pools (302) are in contact with the bath (301) through the first notch (304); A second notch (306) is provided at a position away from the side of the bath (301) and corresponding to the first notch (304) for facilitating the passage of the wire (5), and a plurality of return holes (307) in communication with the storage tank (303) are provided at the bottom of the reflux tank (302); the storage tank (303) is located below the bath (301), a cooling plate (308) is provided at the bottom of the storage tank (303), a medium circulation device (309) and an electric heating pipe (310) are provided in the storage tank (303), and a water inlet of the medium circulation device (309) is in communication with the bath (301).

2. The online cable conductor resistance measuring device according to claim 1, characterized in that: A lifting device (4) is provided at the bottom of the bathtub (3), and the main body of the lifting device (4) is fixed on the machine body (6); the lifting device (4) is an electric cylinder or an oil cylinder.

3. The online cable conductor resistance measuring device according to claim 2, characterized in that: The resistance measuring instrument (1) is arranged at the front of the machine body (6).

4. The online cable conductor resistance measuring device according to claim 1, characterized in that: The medium circulation device (309) includes a circulation pump (309-1), which is arranged in the storage tank (303). The outlet of the circulation pump (309-1) is connected to the bathing tank (301) through a pipeline (309-2).

5. The online cable conductor resistance measuring device according to claim 1, characterized in that: The waterproof seal (305) is a high-density sponge sleeve, and the outer wall of the sponge sleeve is provided with a cutout extending to the central hole along the axial direction.

6. The online cable conductor resistance measuring device according to claim 1, characterized in that: A detachable top cover (7) is provided on the top of the bathtub (3).

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