Fast constant temperature system for measuring cable conductor resistance

Abstract

The utility model relates to the field of cable conductor resistance measurement, in particular to a rapid constant temperature system for measuring the resistance of a cable conductor, comprising a medium constant temperature system, a medium negative pressure treatment system and a constant temperature box, the constant temperature box being respectively connected with the constant temperature system and the medium negative pressure treatment system, the constant temperature box comprising an upper cover body and a lower cover body, the upper cover body being rotatably connected with the lower cover body, inner sides of the upper cover body and the lower cover body being provided with measuring cavities, the two measuring cavities forming a complete and closed measuring chamber, both ends of the measuring chamber being symmetrically provided with primary sealing block placement grooves, the other end of the primary sealing block placement groove being provided with a negative pressure chamber, the other end of the negative pressure chamber being provided with a secondary sealing block placement groove, a pressing device for measuring a cable conductor being slidably arranged in the measuring chamber, sealing blocks being arranged in the primary sealing block placement groove and the secondary sealing block placement groove, both ends of the top of the upper cover body and the lower cover body being provided with drying devices, the device has the advantages of simple structure, good sealing effect and high detection accuracy.

Description

Technical Field

[0001] The utility model relates to the field of cable conductor resistance measurement, in particular to a fast constant temperature system for cable conductor resistance measurement. Background Art

[0002] Cable conductors are widely used in the field of power transportation or signal transmission as a wire conductor for transmitting power and signals. In order to reduce the loss of cable conductors when transporting power and improve the stability of signal transmission, it is necessary to pass a variety of tests after the cable conductors are processed to ensure that the cable conductors have good performance. In order to accurately measure the data of the cable conductors during the cable conductor test, it is necessary to intercept part of the finished cable conductors and send them to a constant temperature room of a special testing agency for measurement. Not only is the measurement time long, but it also increases the company's testing costs. Therefore, in order to reduce the testing costs, most companies will build a constant temperature system suitable for the testing of cable conductors produced by themselves. The existing constant temperature system cannot solve the sealing problem of twisted conductors, and cannot ensure that the internal temperature of the twisted conductors is consistent with the external temperature. Therefore, a fast constant temperature system is needed for cable conductor resistance measurement to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a fast constant temperature system for measuring the resistance of a cable conductor. The device has a high sealing effect, effectively improves the constant temperature effect of cable conductor detection, and increases the data accuracy of the cable conductor resistance measurement.

[0004] The utility model aims to provide a rapid constant temperature system for measuring the resistance of a cable conductor, comprising a medium constant temperature system, a medium negative pressure treatment system and a constant temperature box, the constant temperature box being interconnected with the constant temperature system and the medium negative pressure treatment system respectively, the constant temperature box comprising an upper cover body and a lower cover body, the upper cover body being rotatably connected with the lower cover body, inner sides of the upper cover body and the lower cover body being provided with measuring cavities, and the two measuring cavities forming a complete and closed measuring chamber after the upper cover body and the lower cover body are rotated and closed, both ends of the measuring chamber are symmetrically provided with primary sealing block placement grooves, the other end of the primary sealing block placement grooves is provided with negative pressure chambers, the other end of the negative pressure chambers is provided with secondary sealing block placement grooves, a holding device for measuring a cable conductor is slidably arranged in the measuring chamber, the measuring chamber is interconnected with the medium constant temperature system, sealing blocks are arranged in the primary sealing block placement grooves and the secondary sealing block placement grooves, the negative pressure chamber is interconnected with the medium negative pressure treatment system, a drying device is arranged at the top of the upper cover body near the two ends and the lower cover body, and placement grooves for placing cable conductors are penetrated at both ends of the constant temperature box.

[0005] Furthermore, a through hole 1 is opened on one side of the negative pressure chamber, and a through hole 2 is opened at the bottom of both ends of the measuring chamber. Negative pressure pipelines are fixedly connected to through hole 1 and through hole 2, and the negative pressure chamber and the measuring chamber are connected to the medium negative pressure treatment system through the negative pressure pipeline.

[0006] Furthermore, the lower cover body is provided with a medium input port connected to the measuring chamber, and the medium input port is fixedly connected to the medium constant temperature system through a medium input pipeline. The top of the upper cover body is symmetrically provided with a medium output port connected to the measuring chamber, and the medium output port is fixedly connected to the medium constant temperature system through a medium output pipeline.

[0007] Furthermore, the drying device includes a drying feed inlet one and a drying feed inlet two. The drying feed inlet one can be set to two, the two drying feed inlets one are symmetrically arranged on the top of the upper cover body, and the drying feed inlet two is fixedly arranged at the bottom of the lower cover body. The drying feed inlet one and the drying feed inlet two are both connected to the measuring chamber, and heating wires are arranged in the drying feed inlet one and the drying feed inlet two.

[0008] Furthermore, one side of the upper cover body is rotatably connected to the lower cover body through a hinge arranged on one side of the upper cover body, and the other side of the upper cover body is fixedly connected to the lower cover body through a lock body arranged on one side of the upper cover body.

[0009] Furthermore, a handle is fixedly provided on one side of the upper cover body.

[0010] The working principle and use principle of the utility model are as follows: the device places the cable conductor to be measured in the constant temperature box through the placement groove on the constant temperature box, then closes the cover body through the hinge and fixes the cover body with the lock body, and transports the medium for constant cable conductor into the constant temperature box through the medium constant temperature system, and when the cable conductor is completely in a constant temperature state, the cable conductor is pressed and measured by a cable conductor measurement holding device, and sealing blocks are arranged in the first-level sealing block placement groove and the second-level sealing block placement groove, and the sealing effects of the measuring chamber and the constant temperature box are respectively improved by the sealing blocks, and the negative pressure chamber generates negative pressure through the negative pressure processing system, and the negative pressure generated by the negative pressure processing system is used to form a vacuum state in the negative pressure chamber, thereby further improving the sealing effect, and the drying device can dry the medium remaining on the surface of the cable conductor after measurement.

[0011] Compared with the prior art, the beneficial effects of the utility model are: the device effectively improves the sealing effect of the device through the primary sealing block placement groove, the secondary sealing block placement groove and the negative pressure chamber, avoiding external factors from affecting the accuracy of cable conductor detection, and the drying device can avoid the measurement medium from remaining on the surface of the cable conductor. The device has the advantages of simple structure, good constant temperature effect and high sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view schematic diagram of the overall structure of an embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the overall structure of the embodiment of the utility model from the back;

[0014] Figure 3This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 4 Schematic diagram of the working process of the embodiment of the present utility model.

[0016] Explanation of the reference numerals in the accompanying drawings: 1. Constant temperature box; 11. Measuring chamber; 12. Primary sealing block placement groove; 13. Negative pressure chamber; 131. Through hole one; 132. Through hole two; 14. Secondary sealing block placement groove; 2. Upper cover body; 21. Handle; 3. Lower cover body; 4. Lock body; 5. Hinge; 61. Drying feed inlet one; 62. Drying feed inlet two; 7. Medium input port; 71. Medium output port; 8. Holding device for cable conductor measurement; 9. Placement groove. DETAILED DESCRIPTION

[0017] according to Figure 1 and Figure 4 As shown: a rapid constant temperature system for measuring the resistance of a cable conductor, comprising a medium constant temperature system, a medium negative pressure treatment system and a constant temperature box 1, wherein the constant temperature box 1 is respectively connected to the constant temperature system and the medium negative pressure treatment system, and the constant temperature box 1 comprises an upper cover 2 and a lower cover 3, wherein the upper cover 2 and the lower cover 3 are rotatably connected, wherein the inner sides of the upper cover 2 and the lower cover 3 are provided with a measuring cavity, wherein the upper cover 2 and the lower cover 3 are rotated and closed so that the two measuring cavities form a complete and closed measuring chamber 11, wherein both ends of the measuring chamber 11 are symmetrically provided with a primary sealing block placement groove 12, wherein the primary sealing block placement groove 12 A negative pressure chamber 13 is provided at the other end of the negative pressure chamber 13, and a secondary sealing block placement groove 14 is provided at the other end of the negative pressure chamber 13. A cable conductor measurement holding device 8 is slidably provided in the measuring chamber 11, and the measuring chamber 11 is communicated with the medium constant temperature system. Sealing blocks are provided in the primary sealing block placement groove 12 and the secondary sealing block placement groove 14. The negative pressure chamber 13 is communicated with the medium negative pressure processing system. Drying devices are provided at the top of the upper cover body 2 near the two ends and the lower cover body 3, and placement grooves 9 for placing cable conductors are penetrated at both ends of the constant temperature box 1.

[0018] In specific implementation, the medium constant temperature system can adopt a constant temperature water bath device for wire and cable resistance with publication number CN220403639U, and use technology consistent with the principle of the patent to always keep the medium at a suitable temperature for cable measurement. The cable conductor measurement holding device 8 can measure the cable conductor, and the medium input pipe is used to transport the medium to the constant temperature box 1 so that the cable conductor to be measured is completely immersed in the medium. The sealing blocks are respectively arranged in the primary sealing block placement groove 12 and the secondary sealing block placement groove 14. The primary sealing block placement groove 12 and the secondary sealing block placement groove 14 are used to improve the sealing effect of the measuring chamber 11 to prevent the medium from flowing out of the measuring chamber 11. The negative pressure chamber 13 and the medium negative pressure processing system are connected through The negative pressure pipeline is connected, and the medium negative pressure processing system can adopt a vacuum loader with a publication number of CN217577392U. The negative pressure chamber 13 is connected using a technology consistent with the principle of the patent to form a negative pressure vacuum state in the negative pressure chamber 13. The negative pressure chamber 13 is used to further improve the sealing effect of the device. The drying device can dry the medium remaining on the cable conductor after the measurement. The handle 21 is fixedly connected to the upper cover body 2, and the handle 21 is used to facilitate the opening and closing of the upper cover body 2. One side of the placement groove 9 passes through the secondary sealing block placement groove 9, the negative pressure chamber 13, the primary sealing block placement groove 9 and the side wall of the measuring chamber 11. When measuring the cable conductor, the cable conductor is placed horizontally in the placement groove 9 and sealed by the sealing block for measurement.

[0019] according to Figure 2 and Figure 4 As shown: a through hole 131 is opened on one side of the negative pressure chamber 13, and a through hole 132 is opened at the bottom of both ends of the measuring chamber 11, and negative pressure pipelines are fixedly connected to the through hole 131 and the through hole 2 132, and the negative pressure chamber 13 and the measuring chamber 11 are connected to the medium negative pressure treatment system through the negative pressure pipeline; a medium input port 7 connected to the measuring chamber 11 is opened on the rear side of the measuring chamber 11, and the medium input port 7 is fixedly connected to the medium constant temperature system through the medium input pipeline, and the top of the upper cover body 2 is symmetrically provided with a medium output port 71 connected to the measuring chamber 11, and the medium output port 71 is fixedly connected to the medium constant temperature system through a medium output pipeline.

[0020] In specific implementation, the medium negative pressure treatment system is equipped with a negative pressure machine for generating negative pressure. The negative pressure generated by the negative pressure machine is used to generate negative pressure in the negative pressure chamber 13 and the measuring chamber 11, thereby further improving the sealing effect of the device. The medium constant temperature system is provided with a temperature treatment device for maintaining a constant temperature of the medium. The medium constant temperature system is used to maintain the medium at a temperature that is convenient for measuring the cable conductor, and the medium is transported from the medium input port 7 to the measuring chamber 11 through the medium input pipeline to perform constant temperature treatment on the cable conductor. The medium output port 71 is connected to a medium output pipeline to continuously extract the medium, thereby realizing continuous circulation of the medium and ensuring that the medium can always be maintained at a constant temperature.

[0021] according to Figure 3 As shown: one side of the upper cover body 2 is rotatably connected to the lower cover body 3 through a hinge 5 arranged on one side of the upper cover body 2, and the other side of the upper cover body 2 is fixedly connected to the lower cover body 3 through a lock body 4 arranged on one side of the upper cover body 2; the drying device includes a drying feed inlet 1 61 and a drying feed inlet 2 62, and the drying feed inlet 1 61 can be set to two, the two drying feed inlets 1 61 are symmetrically arranged on the top of the upper cover body 2, and the drying feed inlet 2 62 is fixedly arranged at the bottom of the lower cover body 3, the drying feed inlet 1 61 and the drying feed inlet 2 62 are both connected to the measuring chamber 11, and heating wires are arranged in the drying feed inlet 1 61 and the drying feed inlet 2 62.

[0022] In a specific implementation, the hinges 5 can be set to be multiple, and the upper cover body 2 can be rotated on the top side of the lower cover body 3 through the multiple hinges 5. The lock body 4 includes a locking block and a locking groove. The locking block is arranged on the upper cover body 2 on the other side of the hinge 5, and the locking groove is arranged on the side of the lower cover body 3 corresponding to the locking block. The upper cover body 2 and the lower cover body 3 can be locked by the lock body 4. The drying feed inlet 1 61 and the drying feed inlet 2 62 are equipped with heating wires. The drying feed inlet 1 61 and the drying feed inlet 2 62 can be used to inhale and heat the external air. The heated air can dry the medium remaining on the surface of the cable conductor after the measurement is completed.

[0023] In this embodiment, the medium may be insulating liquids such as insulating oil and ultrapure water.

Claims

1. A rapid constant temperature system for measuring cable conductor resistance, comprising a medium constant temperature system, a medium negative pressure treatment system and a constant temperature box (1), characterized in that: The constant temperature box (1) is respectively connected to the constant temperature system and the medium negative pressure treatment system. The constant temperature box (1) comprises an upper cover body (2) and a lower cover body (3). The upper cover body (2) and the lower cover body (3) are rotatably connected. The inner sides of the upper cover body (2) and the lower cover body (3) are both provided with measuring cavities. When the upper cover body (2) and the lower cover body (3) are rotated and closed, the two measuring cavities form a complete and closed measuring chamber (11). Both ends of the measuring chamber (11) are symmetrically provided with primary sealing block placement grooves (12). The other end of the primary sealing block placement groove (12) is provided with a negative pressure chamber (13). The negative pressure chamber (13) is provided with a first-stage sealing block placement groove (12). The other end of the chamber (13) is provided with a secondary sealing block placement groove (14), a cable conductor measurement holding device (8) is slidably provided in the measuring chamber (11), and the measuring chamber (11) is communicated with the medium constant temperature system, sealing blocks are provided in the primary sealing block placement groove (12) and the secondary sealing block placement groove (14), the negative pressure chamber (13) is communicated with the medium negative pressure treatment system, a drying device is provided at the top of the upper cover body (2) near both ends and the lower cover body (3), and placement grooves (9) for placing cable conductors are provided through both ends of the constant temperature box (1).

2. The rapid constant temperature system for measuring cable conductor resistance according to claim 1, characterized in that: A through hole 1 (131) is provided on one side of the negative pressure chamber (13), and through holes 2 (132) are provided at the bottoms of both ends of the measuring chamber (11). Negative pressure pipelines are fixedly connected to the through holes 1 (131) and 2 (132), and the negative pressure chamber (13) and the measuring chamber (11) are connected to the medium negative pressure treatment system via the negative pressure pipelines.

3. The rapid constant temperature system for measuring cable conductor resistance according to claim 1 or 2, characterized in that: The lower cover body (3) is provided with a medium input port (7) communicating with the measuring chamber (11), the medium input port (7) being fixedly connected to the medium constant temperature system via a medium input pipeline, and the top of the upper cover body (2) is symmetrically provided with a medium output port (71) communicating with the measuring chamber (11), the medium output port (71) being fixedly connected to the medium constant temperature system via a medium output pipeline.

4. The rapid constant temperature system for measuring cable conductor resistance according to claim 1 or 2, characterized in that: The drying device comprises a drying feed inlet one (61) and a drying feed inlet two (62). The drying feed inlet one (61) can be provided in two, the two drying feed inlets one (61) are symmetrically arranged on the top of the upper cover body (2), and the drying feed inlet two (62) is fixedly arranged on the bottom of the lower cover body (3). The drying feed inlet one (61) and the drying feed inlet two (62) are both connected to the measuring chamber (11), and heating wires are arranged in the drying feed inlet one (61) and the drying feed inlet two (62).

5. The rapid constant temperature system for measuring cable conductor resistance according to claim 3, characterized in that: The drying device comprises a drying feed inlet one (61) and a drying feed inlet two (62). The drying feed inlet one (61) can be provided in two, the two drying feed inlets one (61) are symmetrically arranged on the top of the upper cover body (2), and the drying feed inlet two (62) is fixedly arranged on the bottom of the lower cover body (3). The drying feed inlet one (61) and the drying feed inlet two (62) are both connected to the measuring chamber (11), and heating wires are arranged in the drying feed inlet one (61) and the drying feed inlet two (62).

6. The fast constant temperature system for measuring cable conductor resistance according to claim 1, 2 or 5, characterized in that: One side of the upper cover body (2) is rotatably connected to the lower cover body (3) via a hinge (5) arranged on the side of the upper cover body (2), and the other side of the upper cover body (2) is fixedly connected to the lower cover body (3) via a lock body (4) arranged on the side of the upper cover body (2).

7. The rapid constant temperature system for measuring cable conductor resistance according to claim 3, characterized in that: One side of the upper cover body (2) is rotatably connected to the lower cover body (3) via a hinge (5) arranged on the side of the upper cover body (2), and the other side of the upper cover body (2) is fixedly connected to the lower cover body (3) via a lock body (4) arranged on the side of the upper cover body (2).

8. The rapid constant temperature system for measuring cable conductor resistance according to claim 4, characterized in that: One side of the upper cover body (2) is rotatably connected to the lower cover body (3) via a hinge (5) arranged on the side of the upper cover body (2), and the other side of the upper cover body (2) is fixedly connected to the lower cover body (3) via a lock body (4) arranged on the side of the upper cover body (2).

9. The fast constant temperature system for measuring cable conductor resistance according to claim 1, 2, 5, 7 or 8, characterized in that: A handle (21) is fixedly provided on one side of the upper cover body (2).

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