Conductivity detection device for heat tracing cable

Abstract

The utility model discloses a conductive performance detection device for a heat tracing cable, and the device comprises a bottom plate, the upper surface of the bottom plate is symmetrically and fixedly provided with two installation vertical plates, the upper ends of the two installation vertical plates are jointly and fixedly connected with a top plate, and the lower surface of the top plate is fixedly provided with a fixed connection plate. A lifting air cylinder is fixedly arranged on the surface of the fixed connecting plate, a push plate is fixedly arranged at one end of a telescopic shaft of the lifting air cylinder, an insulating plate is fixedly arranged on the surface of one side of the push plate, and a first detection plate and a second detection plate are fixedly arranged on the surface of the side, facing the bottom plate, of the insulating plate; detection heads are arranged on the surfaces of the first detection plate and the second detection plate; a placement groove is formed in the upper surface of the bottom plate under the detection head, and a manual rotary valve is fixedly arranged on the upper surface of the bottom plate. According to the utility model, the heat tracing cable does not need to be stripped manually when the conductivity of the heat tracing cable is detected.

Description

Technical Field

[0001] The utility model relates to the technical field of cable performance detection, in particular to a conductive performance detection device for a heating cable. Background Art

[0002] The heating cable is composed of semiconductor heating material and two parallel busbars with an external insulating layer. The semiconductor heating material is composed of PTC plastic and conductive carbon particles. When the busbar is energized, the carbon particles form a circuit between the two power supply busbars and generate heat. The number of circuits between the busbars varies with the influence of the ambient temperature of the cable.

[0003] When the temperature around the heating cable becomes cold, the semiconductor heating material produces micro-molecule contraction, which connects the carbon particles to form a circuit. Current flows through these circuits, causing the cable to heat up. When the temperature rises, the semiconductor heating material produces micro-molecule expansion, which gradually separates the carbon particles, causing the circuit to be interrupted and the resistance to rise. The cable automatically reduces the power output, thereby achieving automatic adjustment of the cable heating temperature.

[0004] Therefore, when the heating cable is produced, its conductivity needs to be tested to ensure the normal use of the heating cable in the future. The existing testing method usually requires the operator to manually use a blade to strip the heating cable to expose the busbar (cable core) inside the heating cable, and then use a multimeter to test the conductivity. However, manual stripping is time-consuming and laborious, and the operator is easily injured during the stripping process. Therefore, a new conductivity performance testing device for heating cables is needed. Utility Model Content

[0005] The utility model aims to provide a conductive performance detection device for a heating cable, which is used to solve the problem that in the prior art, when conducting conductive performance detection of the heating cable, the conductive performance detection is achieved by manually stripping the heating cable, and the stripping process is time-consuming and labor-intensive, and is likely to cause injuries to operators.

[0006] To achieve the above-mentioned purpose, the embodiment of the present application adopts the following technical scheme: a conductive performance detection device for a heating cable, including a base plate, characterized in that: two mounting uprights are symmetrically fixedly arranged on the upper surface of the base plate, a top plate is fixedly connected to the upper ends of the two mounting uprights, a fixed connecting plate is fixedly arranged on the lower surface of the top plate, a lifting cylinder is fixedly arranged on the surface of the fixed connecting plate, a push plate is fixedly arranged at one end of the telescopic axis of the lifting cylinder, an insulating plate is fixedly arranged on one side surface of the push plate, a first detection plate and a second detection plate are fixedly arranged on the side surface of the insulating plate facing the base plate, two groups of detection heads are arranged on the surfaces of the first detection plate and the second detection plate, and two groups of detection heads are arranged on the surfaces of the first detection plate and the second detection plate. The surface of the second detection plate is provided with a lead wire that contacts the detection head, and the detection head can be used to contact the cable core of the heating cable to detect the conductive performance; one end of the lead wire is connected to the multimeter; a placement groove is provided on the upper surface of the base plate directly below the detection head, and the placement groove is used to accommodate the heating cable, and a limit block is fixedly provided inside one end of the placement groove, and a manual rotary valve is fixedly provided on the upper surface of the base plate, a main air vent is provided on one side surface of the manual rotary valve, and a first air vent and a second air vent are provided on the other side surface of the manual rotary valve, and a first air inlet and a second air inlet are provided on one side surface of the lifting cylinder, and the first air vent and the second air vent are connected to the first air inlet and the second air inlet through a hose.

[0007] Furthermore, in an embodiment of the utility model, a gap is left between the first detection plate and the second detection plate, and the distance of the gap is the same as the distance between two cable cores in the heating cable.

[0008] Furthermore, in an embodiment of the utility model, the two groups of detection heads are each composed of two conical columns, and a distance is left between the two conical columns, and the distance between the two conical columns is smaller than the diameter of the cable core.

[0009] Furthermore, in an embodiment of the utility model, a fixed mounting seat is provided on the upper surface of the base plate on one side of the placement slot, a locking seat is provided on the upper surface of the base plate on the other side of the placement slot, a pressure plate is rotatably connected inside the fixed mounting seat, a rubber sleeve is provided on the surface of the pressure plate facing the placement slot, the rubber sleeve can be used to limit the heating cable, a locking spring sheet is provided on the surface of the pressure plate on one side of the rubber sleeve, a locking groove is provided inside the locking seat, and the locking groove cooperates with the locking spring sheet.

[0010] Furthermore, in the embodiment of the utility model, transparent baffles are fixedly connected to the two opposite side surfaces of the two mounting vertical plates.

[0011] The beneficial effects of the utility model are as follows: the utility model can make the first detection plate and the second detection plate automatically contact the heating cable by setting a lifting cylinder, so that the detection head pierces the surface of the heating cable and contacts the cable core, so that there is no need to manually strip the heating cable for conductive performance testing, avoiding the phenomenon that the operator is easily injured by manually stripping the heating cable with a blade, and the blade easily scratches the cable core. The heating cable can be positioned by placing a groove, thereby avoiding the phenomenon that the heating cable moves during the detection process and improving the detection performance. The heating cable can be squeezed and fixed by setting a rubber ferrule, which further ensures that the heating cable can be stable when conducting conductive performance testing and improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 The utility model is a schematic diagram of the overall structure of a conductive performance detection device for a heating cable according to an embodiment of the present utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the overall structure when the medium pressure plate is opened.

[0015] Figure 3 yes Figure 1 Another perspective structural diagram of .

[0016] Figure 4 yes Figure 1 Schematic diagram of the internal cross-sectional structure after the detection head penetrates the heating cable.

[0017] Figure 5 yes Figure 3 Schematic diagram of the structure of the first detection board and the second detection board.

[0018] 10. Bottom plate 101, installation plate 102, top plate

[0019] 103, baffle 104, placement slot 105, fixed connection plate

[0020] 106. Limit block

[0021] 20. Manual rotary valve 201, main vent 202, first vent

[0022] 203. Second vent

[0023] 30. Lifting cylinder 301, push plate 302, insulation plate

[0024] 303, first detection plate 304, second detection plate 305, first air inlet

[0025] 306. Second air inlet 307. Detection head

[0026] 40, fixed mounting seat 401, pressing plate 402, rubber sleeve

[0027] 403, locking spring 404, locking seat

[0028] 50. Heating cable 501. Cable core DETAILED DESCRIPTION

[0029] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of 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.

[0030] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", and "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0033] like Figure 1-4 As shown, the present embodiment discloses a conductive performance testing device for a heating cable, comprising a bottom plate 10, on the upper surface of which two mounting upright plates 101 are symmetrically fixedly arranged, and on the surfaces of the two opposite sides of the two mounting upright plates 101, transparent baffles 103 are fixedly connected together, and the baffles 103 are arranged to prevent operators from accidentally reaching into the detection head 307 and causing pinching injuries when the conductive performance of the heating cable 50 is tested, and a top plate 102 is fixedly connected together at the upper ends of the two mounting upright plates 101, and a fixed connecting plate 105 is fixedly arranged on the lower surface of the top plate 102, and a lifting cylinder 30 is fixedly arranged on the surface of the fixed connecting plate 105, and a push plate 301 is fixedly arranged at one end of the telescopic shaft of the lifting cylinder 30, and on one side of the push plate 301 An insulating plate 302 is fixedly arranged on the surface, and a first detection plate 303 and a second detection plate 304 are fixedly arranged on the surface of the insulating plate 302 on one side facing the bottom plate 10. A spacing is left between the first detection plate 303 and the second detection plate 304, and the distance of the spacing is the same as the spacing between the two cable cores 501 in the heating cable 50. Two groups of detection heads 307 are arranged on the surfaces of the first detection plate 303 and the second detection plate 304. Specifically, the two groups of detection heads 307 are composed of two conical columns, and a spacing is left between the two conical columns. The spacing between the two conical columns is smaller than the diameter of the cable core 501. Specifically, the conical columns of the first detection plate 303 and the conical columns of the second detection plate 304 correspond to the two cable cores 501 in the heating cable 50, respectively. Two leads (not shown in the figure) electrically connected to the detection head 307 are arranged on the surface of the first detection plate 303 and the second detection plate 304. The detection head 307 can be used to contact the cable core 501 of the heating cable 50 to detect the conductivity. One end of the two leads is respectively connected to a multimeter (not shown in the figure), and the detection data of the heating cable is displayed by the multimeter. By setting the lifting cylinder 30, the first detection plate 303 and the second detection plate 304 can automatically contact the heating cable 50, so that the detection head 307 pierces the surface of the heating cable 50 and contacts the cable core 501, so that there is no need to manually strip the heating cable 50 for the conductivity test, and it is avoided that the heating cable 50 is stripped manually by a blade, which is easy to cause injuries to the operator.

[0034] like Figure 1 ,3 As shown, a placement groove 104 is provided on the upper surface of the bottom plate 10 directly below the detection head 307. The placement groove 104 is used to accommodate the heating cable 50. A limit block 106 is fixedly provided inside one end of the placement groove 104. A manual rotary valve 20 is fixedly provided on the upper surface of the bottom plate 10. A ventilation main port 201 is provided on one side surface of the manual rotary valve 20. A first vent 202 and a second vent 203 are provided on the other side surface of the manual rotary valve 20. A first air inlet 305 and a second air inlet 306 are provided on one side surface of the lifting cylinder 30. The first vent 202 and the second vent 203 are respectively connected to the first air inlet 305 and the second air inlet 306 through a hose. The manual rotary valve 20 belongs to the prior art, as long as the telescopic end of the lifting cylinder 30 can be moved up and down. The placement groove 104 can be used to position the heating cable 50, thereby avoiding the movement of the heating cable 50 during the detection process and improving the detection performance.

[0035] like Figure 2 As shown, a fixed mounting seat 40 is provided on the upper surface of the bottom plate 10 on one side of the placement slot 104, a locking seat 404 is provided on the upper surface of the bottom plate 10 on the other side of the placement slot 104, a pressing plate 401 is rotatably connected inside the fixed mounting seat 40, a rubber ferrule 402 is provided on the surface of the pressing plate 401 facing the placement slot 104, and the rubber ferrule 402 can be used to limit the heating cable 50, a locking spring 403 is provided on the surface of the pressing plate 401 on one side of the rubber ferrule 402, and a locking groove is provided inside the locking seat 404, and the locking groove cooperates with the locking spring 403. By providing the rubber ferrule 402, the heating cable 50 can be squeezed and fixed, which further ensures that the heating cable 50 can be stable when conducting the conductivity test, thereby improving the test efficiency.

[0036] The working principle of the utility model is as follows: when testing the conductivity of the heating cable 50, one end of the heating cable 50 is placed in the placement groove 104, and the end of the heating cable 50 placed in the placement groove 104 is made to fit with the surface of the limit block 106, so as to position the heating cable 50 to prevent the heating cable 50 from moving when testing the conductivity. After the heating cable 50 is placed, the operator rotates the pressing plate 401 toward the locking seat 404, so that the locking spring piece 403 is inserted into the locking groove of the locking seat 404, so that the rubber sleeve 402 fits the upper surface of the heating cable 50 to squeeze and fix the heating cable 50.

[0037] After the heating cable 50 is fixed, the operator turns the handle on the manual rotary valve 20 to start the lifting cylinder 30, and the telescopic shaft of the lifting cylinder 30 extends outward to drive the push plate 301 to move downward, and the push plate 301 drives the insulating plate 302, the first detection plate 303, and the second detection plate 304 to move downward. During the downward movement of the first detection plate 303 and the second detection plate 304, the detection head 307 pierces the surface of the heating cable 50, and stops after extending into the interior of the heating cable 50 and touching the cable core 501. When the detection head 307 touches the cable core 501, the leads set on the first detection plate 303 and the second detection plate 304 will display the detection data through the multimeter.

[0038] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A device for detecting the electrical conductivity of a heating cable, comprising a bottom plate, characterized in that: Two mounting vertical plates are symmetrically fixed on the upper surface of the bottom plate, a top plate is fixedly connected to the upper ends of the two mounting vertical plates, a fixed connecting plate is fixedly arranged on the lower surface of the top plate, a lifting cylinder is fixedly arranged on the surface of the fixed connecting plate, a push plate is fixedly arranged on one end of the telescopic shaft of the lifting cylinder, an insulating plate is fixedly arranged on one side surface of the push plate, a first detection plate and a second detection plate are fixedly arranged on the side surface of the insulating plate facing the bottom plate, two groups of detection heads are arranged on the surfaces of the first detection plate and the second detection plate, leads contacting with the detection heads are arranged on the surfaces of the first detection plate and the second detection plate, and the detection heads can be used to contact the cable core of the heating cable to detect the conductive performance; A placement groove is provided on the upper surface of the base plate directly below the detection head, and the placement groove is used to accommodate the heating cable. A limit block is fixedly provided inside one end of the placement groove, and a manual rotary valve is fixedly provided on the upper surface of the base plate. A main vent is provided on one side surface of the manual rotary valve, and a first vent and a second vent are provided on the other side surface of the manual rotary valve. A first air inlet and a second air inlet are provided on one side surface of the lifting cylinder, and the first air inlet and the second air inlet are connected to the first air inlet and the second air inlet through a hose.

2. A conductive performance detection device for a heating cable according to claim 1, characterized in that: A spacing is left between the first detection plate and the second detection plate, and the distance of the spacing is the same as the distance between two cable cores in the heating cable.

3. A conductive performance detection device for a heating cable according to claim 2, characterized in that: Both groups of detection heads are composed of two conical columns, and a distance is left between the two conical columns, and the distance between the two conical columns is smaller than the diameter of the cable core.

4. A conductive performance detection device for a heating cable according to claim 1, characterized in that: A fixed mounting seat is provided on the upper surface of the base plate on one side of the placement slot, a locking seat is provided on the upper surface of the base plate on the other side of the placement slot, a pressure plate is rotatably connected inside the fixed mounting seat, a rubber ferrule is provided on the surface of the pressure plate facing the placement slot, the rubber ferrule can be used to limit the heating cable, a locking spring sheet is provided on the surface of the pressure plate on one side of the rubber ferrule, a locking groove is provided inside the locking seat, and the locking groove cooperates with the locking spring sheet.

5. The conductive performance detection device for a heating cable according to claim 1, characterized in that: Transparent baffles are fixedly connected to the opposite side surfaces of the two mounting vertical plates.

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