Hand-held thermodetector for on-line temperature detection of cable

Abstract

The utility model relates to the cable production and detection field, and discloses a hand-held thermodetector used for cable on-line temperature detection, side frames are arranged behind the left side and the right side of a machine body housing, a supporting shaft is installed on the rear side of each side frame, a cable stabilizing wheel is rotatably installed at the rear end of each supporting shaft, an installation seat is installed on the front side of the machine body housing, and a cable is installed on the installation seat. A traditional thermocouple structure is changed into a wire-coil-shaped structure, the machine body shell is designed to be of a handheld structure, and therefore the temperature measuring device is convenient to carry, wire stabilizing wheels are arranged on the left side and the right side of the machine body shell, the top ends of outer rings of the wire stabilizing wheels are located below the top end of a contact disc, and therefore the temperature measuring device is convenient to carry. And the size of the space between the wire stabilizing wheel and the temperature measuring head can be changed as required, so that the outer ring of the core wire can be directly attached to the temperature measuring head, the outer ring and the temperature measuring head are in direct contact, the temperature measuring accuracy is improved, the temperature of the core wire at any part can be detected at any time, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the fields of cable production and detection, and particularly relates to a handheld temperature measuring instrument for on-line temperature detection of cables. Background Art

[0002] The production process of cables can be generally summarized as: drawing, single-wire annealing, stranding, insulation extrusion, cabling, inner sheath, armoring, and outer sheath. Among them, the "insulation extrusion" process is particularly important. In this step, the conductor inside the cable is coated with rubber or other materials on the outside to make the cable surface insulated. Before this process, a conductor preheater is needed to heat up the core wire so as to form with the subsequent insulating material. In the existing production technology, most production enterprises do not perform real-time temperature measurement after the core wire is preheated and then pass it through the extruder, resulting in a series of product defect problems, such as poor quality problems of rough surface, charring, and impurities; although there are already instruments such as on-line temperature measurement systems for core wires on the market, their large size and inconvenient movement limit their scope of use. Therefore, we have designed a handheld temperature measuring instrument for on-line temperature detection of cables. Content of the Utility Model

[0003] To solve the technical problem that instruments such as on-line temperature measurement systems are large in size and inconvenient to move, which limits their scope of use, the utility model provides a handheld temperature measuring instrument for on-line temperature detection of cables.

[0004] The utility model is realized by adopting the following technical solutions: a handheld temperature measuring instrument for on-line temperature detection of cables, including a body shell. A PCB main board is arranged inside the body shell. A body cover is installed above the body shell, and a touch screen is embedded in the body cover. The touch screen is electrically connected to the PCB main board. Side frames are arranged at the rear of both the left and right sides of the body shell. A support shaft is installed at the rear of the side frame, and a wire stabilizing wheel is rotatably installed at the rear end of the support shaft;

[0005] An installation seat is installed on the front side of the body shell. A temperature measuring head is rotatably installed on the front side of the installation seat, and the temperature measuring head is electrically connected to the PCB main board.

[0006] As a further improvement of the above solution, a storage battery is installed at the bottom end inside the body shell, and the storage battery is electrically connected to the PCB main board. A data transmission interface and a charging port are also arranged on the body shell, and the two are respectively electrically connected to the PCB main board and the storage battery. The data transmission interface is used to insert a U disk into the data transmission interface 6 on the body shell 3, and data is written into the U disk in the TXT text format once per second.

[0007] As a further improvement of the above solution, the temperature measuring head includes a guiding slip ring which rotates on the mounting base through a bearing. An electric couple 1, a contact disc, and an electric couple 2 are sequentially mounted on the guiding slip ring from the rear to the front. The inner side surfaces of the electric couple 1 and the electric couple 2 are designed as inclined surfaces, and the thicknesses of the electric couple 1 and the electric couple 2 gradually increase from the outer ring to the inner ring, so that the core wire can always be attached to the inner walls of the electric couple 1 and the electric couple 2 and is applicable to core wires of various different sizes.

[0008] As a further improvement of the above solution, the electric couple 1 and the electric couple 2 are made of two different metals and alloy materials, and the guiding slip ring is electrically connected to the PCB main board through a signal wire. The temperature measuring head is a kind of thermocouple. The operation of the thermocouple requires the contact of two different metal substances, that is, the electromotive force generated by two different materials under different temperatures. Through this principle, the temperature is converted into an electrical signal for output. The traditional thermocouple structure is changed into a wire coil structure, which enables the core wire to be attached between the electric couple 1 and the electric couple 2, so that the temperature measuring head can move along the core wire, and thus the temperature of any part of the core wire can be detected at any time, improving the work efficiency.

[0009] As a further improvement of the above solution, the side frame includes a fixed frame. A groove is opened at one end of the fixed frame away from the fuselage shell. A spring telescopic column is embedded in the groove. The top end of the telescopic rod in the spring telescopic column is connected to an extension frame. The wire stabilizing wheel is installed on the extension frame through a support shaft. The extension frame can move upward to the left and right, thereby changing the size of the space between the wire stabilizing wheel and the temperature measuring head, so that the core wire can be placed between the wire stabilizing wheel and the temperature measuring head through the gap between the two.

[0010] As a further improvement of the above solution, the top end of the outer ring of the wire stabilizing wheel is below the top end of the contact disc, and the cross section of the wire stabilizing wheel is in a funnel-shaped structure. The core wire can be clamped between the temperature measuring head and the two wire stabilizing wheels, ensuring full contact with the temperature measuring head and improving the accuracy of temperature measurement.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. By changing the traditional thermocouple structure into a wire coil structure, and installing the temperature measuring head formed by the thermocouple at the rear side of the fuselage shell, and designing the fuselage shell in a handheld structure, the present utility model is convenient to carry, can detect the temperature of any part of the core wire at any time, and improves the work efficiency;

[0013] 2. By arranging wire stabilizing wheels on the left and right sides of the fuselage shell, with the top of the outer ring of the wire stabilizing wheel being below the top of the contact disk and the size of the space between the wire stabilizing wheel and the temperature measuring head being changeable as needed, the outer ring of the core wire can be directly attached to the temperature measuring head, enabling direct contact between the two, improving the accuracy of temperature measurement. Moreover, the temperature measuring head can move directly along the core wire, allowing the temperature of any part of the core wire to be detected at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a hand-held temperature measuring instrument for on-line temperature detection of cables provided by the present utility model;

[0015] Figure 2 is Figure 1 the left and right isometric axonometric drawing of

[0016] Figure 3 is Figure 2 the schematic diagram of the structure after the extension frame is stretched;

[0017] Figure 4 is Figure 2 the schematic diagram without thermocouple 1 in

[0018] Figure 5 is Figure 1 the schematic diagram of the interior of the fuselage shell in

[0019] Figure 6 is the schematic diagram of the structure with the core wire placed on the temperature measuring head and the wire stabilizing wheel.

[0020] MAIN SYMBOL DESCRIPTION:

[0021] 1. Fuselage shell; 11. Fuselage cover; 12. Data transmission interface; 13. Charging port; 2. Touch screen; 3. Side frame; 31. Fixed frame; 32. Extension frame; 33. Spring telescopic column; 4. Wire stabilizing wheel; 41. Support shaft; 5. Mounting seat; 6. Temperature measuring head; 61. Thermocouple 1; 62. Contact disk; 63. Thermocouple 2; 64. Guide slip ring; 7. PCB main board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, in combination with the drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0023] Embodiment:

[0024] Please combine Figures 1-6, A handheld temperature measuring instrument for on-line temperature detection of cables in this embodiment includes a body shell 1. A PCB main board 7 is arranged inside the body shell 1. A body cover 11 is installed above the body shell 1, and a touch screen 2 is embedded in the body cover 11. The touch screen 2 is electrically connected to the PCB main board 7. Side frames 3 are arranged at the rear of both the left and right sides of the body shell 1. A support shaft 41 is installed at the rear of the side frame 3, and a wire stabilizing wheel 4 is rotatably installed at the rear end of the support shaft 41;

[0025] An installation seat 5 is installed on the front side of the body shell 1. A temperature measuring head 6 is rotatably installed on the front side of the installation seat 5, and the temperature measuring head 6 is electrically connected to the PCB main board 7.

[0026] A storage battery is installed at the bottom end inside the body shell 1, and the storage battery is electrically connected to the PCB main board 7. A data transmission interface 12 and a charging port 13 are also arranged on the body shell 1, and they are respectively electrically connected to the PCB main board 7 and the storage battery. The data transmission interface 12 is used to insert a U disk into the data transmission interface 126 on the body shell 13, and data in TXT text format is written to the U disk once per second.

[0027] The temperature measuring head 6 includes a guiding slip ring 64. The guiding slip ring 64 rotates on the installation seat 5 through a bearing. An electric couple 61, a contact disk 62, and an electric couple 63 are sequentially installed on the guiding slip ring 64 from the rear to the front. The inner side surfaces of the electric couple 61 and the electric couple 63 are designed as inclined surfaces. The thicknesses of the electric couple 61 and the electric couple 63 gradually increase from the outer ring to the inner ring, so that the core wire can always be attached to the inner walls of the electric couple 61 and the electric couple 63, and it is applicable to core wires of various different sizes.

[0028] The electric couple 61 and the electric couple 63 are made of two different metals and alloy materials, and the guiding slip ring 64 is electrically connected to the PCB main board 7 through a signal wire. The temperature measuring head 6 is a kind of thermocouple. The thermocouple needs the contact of two different metal substances to work, that is, the electromotive force generated by two different materials under different temperatures. Through this principle, the temperature is converted into an electrical signal output. The traditional thermocouple structure is changed into a wire coil structure, which enables the core wire to be attached between the electric couple 61 and the electric couple 63, so that the temperature measuring head 6 can move along the core wire, thereby detecting the temperature of any part of the core wire at any time and improving work efficiency.

[0029] The side frame 3 includes a fixing frame 31, which has a groove at one end away from the fuselage shell 1, in which a spring telescopic column 33 is embedded, and the top of the telescopic rod in the spring telescopic column 33 is connected to an extension frame 32, and the stabilizing wheel 4 is installed on the extension frame 32 through a support shaft 41. The extension frame 32 can move upward to the left and right sides, thereby changing the size of the space between the stabilizing wheel 4 and the temperature measuring head 6, so that the core wire can be placed between the stabilizing wheel 4 and the temperature measuring head 6 through the gap between the two, and then the spring telescopic column 33 retracts to restore the stabilizing wheel 4 to its original position, so that the core wire cannot be separated from the stabilizing wheel 4 and the temperature measuring head 6.

[0030] The top of the outer ring of the stabilizing wheel 4 is below the top of the contact plate 62, and the cross-section of the stabilizing wheel 4 is a funnel-shaped structure. The core wire can be clamped between the temperature measuring head 6 and the two stabilizing wheels 4 to ensure that it fully contacts the temperature measuring head 6, thereby improving the accuracy of temperature measurement.

[0031] The implementation principle of a handheld thermometer for online temperature detection of cables in the embodiment of the present application is as follows: in actual use, first, manually hold the handheld thermometer and press the button switch set on the body cover 11, the touch screen 2 lights up, then lightly touch the touch screen 2 and enter the interactive interface, press the temperature measurement button, enter the temperature measurement setting interface, adjust the temperature threshold (this procedure is the existing technology of the existing thermometer), and then pull the extension frames 32 on the left and right sides upward respectively, thereby changing the size of the space between the stabilizing wheel 4 and the temperature measuring head 6, so that the core wire can be placed between the stabilizing wheel 4 and the temperature measuring head 6, and because the top of the outer ring of the stabilizing wheel 4 is below the top of the contact plate 62, this allows the outer ring of the core wire to fit on the temperature measuring head 6 (such as Figure 6 As shown), at this time, the temperature measurement key is pressed. When the metal wire contacts the temperature measuring head 6, the temperature measuring head 6 will generate an electromotive force due to the thermoelectric effect, thereby converting the temperature into an electrical signal output. The ADC chip on the PCB main board 7 collects data, and then the measured temperature is displayed in real time through the algorithm. The temperature data is obtained in real time. If the threshold is exceeded, the temperature is displayed in red.

[0032] By changing the traditional electric thermocouple structure into a coil-shaped structure, and installing the temperature measuring head 6 formed by the thermocouple on the rear side of the body shell 1, and designing the body shell 1 as a handheld structure, it is easy to carry, so that the core wire temperature of any part can be detected at any time, thereby improving work efficiency;

[0033] By arranging the stabilizing wheel 4 on the left and right sides of the body shell 1, the top of the outer ring of the stabilizing wheel 4 is located below the top of the contact plate 62, and the size of the space between the stabilizing wheel 4 and the temperature measuring head 6 can be changed as needed, so that the outer ring of the core wire can be directly attached to the temperature measuring head 6, so that the two are in direct contact, thereby improving the accuracy of temperature measurement, and the temperature measuring head 6 can also move directly along the core wire, so that the core wire temperature of any part can be detected at any time.

[0034] The above embodiments are only the preferred embodiments of the present utility model, and the scope of protection of the present utility model cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model fall within the scope of protection required by the present utility model.

Claims

1. A handheld thermometer for online cable temperature detection, comprising a body shell (1), a PCB mainboard (7) is arranged inside the body shell (1), a body cover (11) is installed above the body shell (1), and a touch screen (2) is embedded in the body cover (11), and the touch screen (2) is electrically connected to the PCB mainboard (7), characterized in that: Side frames (3) are arranged at the rear of the left and right sides of the fuselage shell (1), a support shaft (41) is installed at the rear side of the side frame (3), and a line stabilizing wheel (4) is rotatably installed at the rear end of the support shaft (41); A mounting seat (5) is installed on the front side of the body shell (1), a temperature measuring head (6) is rotatably installed on the front side of the mounting seat (5), and the temperature measuring head (6) is electrically connected to the PCB main board (7).

2. A handheld thermometer for online cable temperature detection as claimed in claim 1, characterized in that: A storage battery is installed at the bottom of the body shell (1), and the storage battery is electrically connected to the PCB mainboard (7). The body shell (1) is also provided with a data transmission interface (12) and a charging port (13), which are electrically connected to the PCB mainboard (7) and the storage battery respectively.

3. A handheld thermometer for online cable temperature detection as claimed in claim 1, characterized in that: The temperature measuring head (6) comprises a guide slip ring (64), the guide slip ring (64) is rotated on the mounting seat (5) via a bearing, and the guide slip ring (64) is sequentially mounted with a thermocouple 1 (61), a contact plate (62), and a thermocouple 2 (63) from the back to the front, and the inwardly facing surfaces of the thermocouple 1 (61) and the thermocouple 2 (63) are designed to be inclined.

4. A handheld thermometer for online cable temperature detection as claimed in claim 3, characterized in that: The thermocouple 1 (61) and the thermocouple 2 (63) are made of two different metals or alloy materials, and the guide slip ring (64) is electrically connected to the PCB main board (7) via a signal line.

5. A handheld thermometer for online cable temperature detection as claimed in claim 1, characterized in that: The side frame (3) comprises a fixing frame (31), a groove is provided at one end of the fixing frame (31) away from the fuselage shell (1), a spring telescopic column (33) is embedded in the groove, the top end of the telescopic rod in the spring telescopic column (33) is connected to an extension frame (32), and the stabilizing wheel (4) is installed on the extension frame (32) via a support shaft (41).

6. A handheld thermometer for online cable temperature detection as claimed in claim 3, characterized in that: The top end of the outer ring of the stabilizing wheel (4) is located below the top end of the contact disk (62), and the cross-section of the stabilizing wheel (4) is a funnel-shaped structure.

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