Cable temperature measuring piece

Abstract

The invention provides a cable temperature measuring member, and the member comprises an installation member which is provided with a cable clamping groove, and the installation member can be connected with a cable body in a clamping manner through the cable clamping groove; and the temperature sensing color changing part is arranged on the mounting piece and is provided with a display surface which is positioned on one side, far away from the cable clamping groove, of the mounting piece. Through the technical scheme provided by the invention, the problem that an infrared temperature measurement means in the related technology is easily influenced by environmental factors can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power operation and maintenance, and in particular to a cable temperature measuring device. Background Art

[0002] Secondary cables are cables used to transmit low-voltage current, voltage, signals and control information in power systems. Secondary cables are mainly used in places such as substations or distribution rooms to connect various secondary devices (such as relay protection devices, automatic devices, measuring instruments and control equipment, etc.). The voltage level of secondary cables is usually low, generally below hundreds of volts. Compared with high-voltage primary cables, secondary cables pay more attention to the accurate transmission of signals and the execution of control instructions. Secondary cables often include conductors, insulation layers, shielding layers and sheaths. The conductors are used to transmit current or signals, the insulation layers are used to prevent current leakage of the conductors, the shielding layers can reduce the impact of external electromagnetic interference on the transmission signals of the conductors, and the sheaths provide additional structural protection for the conductors to prevent mechanical damage and environmental impacts on the conductors. In the operation of power systems, the stability and reliability of secondary cables are crucial because they are directly related to the working status of the control system and the measurement system. Heating of secondary cables is one of the common problems in operation. It may be caused by overload, poor contact or insulation aging. In severe cases, it will affect the normal operation of the power system and even cause accidents.

[0003] In related technologies, temperature monitoring and maintenance of secondary cables is an important part of power operation and maintenance. The temperature distribution on the surface of secondary cables is detected by infrared thermometers or infrared thermal imagers.

[0004] However, the infrared temperature measurement method used in the related art is easily affected by environmental factors. Summary of the invention

[0005] The present invention provides a cable temperature measuring device to solve the problem that infrared temperature measuring means used in the related art is easily affected by environmental factors.

[0006] The present invention provides a cable temperature measuring device, which includes: a mounting member having a cable slot, through which the mounting member can be snap-connected with a cable body; a temperature-sensitive color-changing portion, which is arranged on the mounting member, and has a display surface located on a side of the mounting member away from the cable slot.

[0007] Furthermore, the cable slot and the temperature-sensitive color-changing portion are respectively arranged on two opposite sides of the mounting component.

[0008] Furthermore, the temperature-sensitive color-changing portion includes a temperature-sensitive color-changing coating disposed on an outer surface of the mounting member.

[0009] Furthermore, the cable temperature measuring component also includes a transparent protective layer, which covers the side of the temperature-sensitive color-changing coating facing away from the mounting component.

[0010] Furthermore, the mounting piece is made of elastic material.

[0011] Furthermore, the cable slot extends along the length direction of the mounting component, and the cable slot runs through both ends of the mounting component.

[0012] Furthermore, the cable slot adopts an arc-shaped slot structure, and the central angle of the arc-shaped slot structure is greater than 180° and less than 360°.

[0013] Furthermore, the mounting part includes: a main body part, which has a heat-conducting channel, on which the cable slot and the temperature-sensitive color-changing part are both arranged, one end of the heat-conducting channel passes through the cable slot, and the other end of the heat-conducting channel extends to the temperature-sensitive color-changing part; a heat-conducting part, which is passed through the heat-conducting channel, one end of the heat-conducting part is provided with a contact surface adapted to the cable slot, and the other end of the heat-conducting part is in contact with the temperature-sensitive color-changing part.

[0014] Furthermore, the cable temperature measuring component also includes a connecting component, which is arranged on the mounting component and can be connected to the cable body.

[0015] Furthermore, the connecting member includes a connecting strap, a buckle and a clamping ring. One end of the connecting strap is connected to the mounting member, the buckle is arranged at the other end of the connecting strap, and the clamping ring is arranged on the mounting member. The buckle can be connected to the clamping ring. When the buckle is connected to the clamping ring, the connecting strap and the mounting groove are arranged to form a threading hole.

[0016] By applying the technical solution of the present invention, the cable temperature measuring component includes a mounting component and a temperature-sensitive color-changing portion. The mounting component is clamped to the cable body through a cable clamping groove. The temperature of the cable body is indirectly transmitted to the temperature-sensitive color-changing portion through the mounting component, so that the temperature-sensitive color-changing portion changes color as the temperature of the cable body changes. The heat of the cable body is directly reflected on the temperature-sensitive color-changing portion, and the temperature-sensitive color-changing portion indicates the temperature. Compared with infrared temperature measurement methods, the influence of environmental factors on the temperature measurement results can be reduced, which is convenient for accurately locating the cable body where the heating terminal is located. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a cable temperature measuring device provided in an embodiment of the present invention is shown;

[0019] Figure 2 A schematic structural diagram of a cable temperature measuring device and a secondary cable provided according to an embodiment of the present invention is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Mounting parts; 11. Cable slot;

[0022] 20. Cable body. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the related art, infrared temperature measurement is used to detect the heating condition of secondary cables, which has the following problems:

[0025] (1) It is necessary to use an infrared temperature measuring device for detection. If an infrared thermometer is not carried during daily equipment inspections, it is impossible to check the heating of the secondary cables, and it is difficult to detect the heating of the terminals in time;

[0026] (2) The use of infrared temperature measurement devices requires a lot of manpower and the temperature measurement time is very long;

[0027] (3) The temperature change of the secondary cable in the initial stage of heating is not obvious. When infrared temperature measurement is used, it is difficult to detect the heating of the secondary cable in time due to the influence of sunlight, terminal block installation angle, temperature measurement angle and distance, and temperature measurement skills;

[0028] (4) The heating of secondary cables generally requires comparison of different phases, because the secondary cables are relatively dense, and it is not easy to locate the secondary cables where the heating terminals are located during infrared temperature measurement;

[0029] (5) Secondary cables are usually located inside the equipment box. When the secondary cables are cross-layered and difficult to measure, the use of infrared temperature measuring devices for temperature measurement is more limited.

[0030] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a cable temperature measuring device, which includes a mounting member 10 and a temperature-sensitive color-changing portion. The mounting member 10 has a cable slot 11, and the mounting member 10 can be connected to a cable body 20 through the cable slot 11. The temperature-sensitive color-changing portion is arranged on the mounting member 10, and the temperature-sensitive color-changing portion has a display surface located on a side of the mounting member 10 away from the cable slot 11.

[0031] The cable temperature measuring device provided in this embodiment is applied, and the cable temperature measuring device includes a mounting member 10 and a temperature-sensitive color-changing portion. The mounting member 10 is clamped with the cable body 20 through the cable clamping groove 11. The temperature of the cable body 20 is indirectly transmitted to the temperature-sensitive color-changing portion through the mounting member 10, so that the temperature-sensitive color-changing portion changes color as the temperature of the cable body 20 changes, thereby directly reacting the heat of the cable body 20 to the temperature-sensitive color-changing portion, and the temperature-sensitive color-changing portion indicates the temperature. Compared with infrared temperature measurement methods, it can reduce the influence of environmental factors on the temperature measurement results, and is convenient for accurately locating the cable body where the heating terminal is located.

[0032] In this embodiment, the cable slot 11 and the temperature-sensitive color-changing portion are respectively arranged on two opposite sides of the mounting member 10 .

[0033] Among them, by respectively arranging the cable slot 11 and the temperature-sensitive color-changing part on the opposite sides of the mounting member 10, it is convenient for the user to intuitively observe the temperature-sensitive color-changing part from the side of the mounting member 10 away from the cable body 20, and it is convenient for the user to buckle the mounting member 10 on the cable body 20 from the observation side.

[0034] In this embodiment, the temperature-sensitive color-changing portion includes a temperature-sensitive color-changing coating disposed on the outer surface of the mounting member 10 .

[0035] Specifically, the temperature-sensitive color-changing coating is coated on the surface of the mounting member 10 except the groove wall of the cable slot 11, thereby increasing the area of ​​the temperature-sensitive color-changing coating and facilitating the user to observe the temperature-sensitive color-changing portion at different angles to read the displayed temperature.

[0036] In this embodiment, the cable temperature measuring component further includes a transparent protective layer, which covers the side of the temperature-sensitive color-changing coating facing away from the mounting component 10 .

[0037] Among them, by covering the transparent protective layer on the side of the thermochromic coating facing away from the mounting member 10, the transparent protective layer can be used to protect the thermochromic coating, prevent the thermochromic coating from drying out and falling off, and extend the service life of the thermochromic coating.

[0038] In this embodiment, the mounting member 10 is made of elastic material.

[0039] The mounting member 10 made of the above material has a certain elastic compression amount, and the mounting member 10 can be tightly buckled on the cable body to accurately reflect the temperature of the cable body.

[0040] In this embodiment, the cable slot 11 extends along the length direction of the mounting member 10 , and the cable slot 11 passes through both ends of the mounting member 10 .

[0041] The cable slot 11 with the above structure can increase the proportion of the cable slot 11 in the length direction of the mounting member 10, thereby increasing the clamping range of the cable slot 11 and improving the clamping reliability.

[0042] In this embodiment, the cable slot 11 adopts an arc-shaped slot structure, and the central angle of the arc-shaped slot structure is greater than 180° and less than 360°.

[0043] The above-mentioned arc groove structure is adopted, which conforms to the design shape of the commonly used cable clamp interface, so that the cable clamp groove 11 can be tightly clamped on the cable body 20, and because the mounting member 10 has a certain elastic compression amount, the mounting member 10 can also be tightly clamped with the cable body 20 within a certain cable diameter range through the cable clamp groove 11.

[0044] In this embodiment, the mounting member 10 includes a main body member and a heat-conducting member, the main body member has a heat-conducting channel, the cable slot 11 and the temperature-sensitive color-changing portion are both arranged on the main body member, one end of the heat-conducting channel passes through the cable slot 11, and the other end of the heat-conducting channel extends to the temperature-sensitive color-changing portion, the heat-conducting member is inserted into the heat-conducting channel, one end of the heat-conducting member is provided with a contact surface adapted to the cable slot 11, and the other end of the heat-conducting member is in contact with the temperature-sensitive color-changing portion.

[0045] Among them, the heat conductive member is used to transfer the temperature of the cable body 20 to the temperature-sensitive color-changing part through the heat conductive channel. The heat conductive channel can be used to insulate the heat conductive member, reduce heat loss during the transfer process, and enhance detection accuracy.

[0046] In this embodiment, the cable temperature measuring component further includes a connecting component, which is disposed on the mounting component 10 and can be connected to the cable body 20 .

[0047] The mounting member 10 is buckled onto the cable body 20 through the cable clamping groove 11 and then connected to the cable body 20 by a connecting member to reinforce the connection between the mounting member 10 and the cable body 20 .

[0048] In this embodiment, the connecting member includes a connecting strap, a buckle and a ring. One end of the connecting strap is connected to the mounting member 10. The buckle is arranged at the other end of the connecting strap. The ring is arranged on the mounting member 10. The buckle can be connected to the ring. When the buckle is connected to the ring, the connecting strap and the cable slot 11 are arranged to form a threading hole.

[0049] Specifically, the mounting piece 10 is buckled onto the cable body 20 through the cable slot 11, and then the connecting strap is wrapped around the side of the cable body 20 away from the mounting piece 10, and then the buckle is connected to the clamping ring, so that the connecting strap and the cable slot 11 are used to enclose a threading hole, and the connection between the mounting piece 10 and the cable body 20 is reinforced by the connecting strap.

[0050] The cable temperature measuring device provided in this embodiment has the following beneficial effects:

[0051] (1) No temperature measuring tools are required to directly sense the heating condition of the cable body;

[0052] (2) The heat of the cable body can be directly reflected on the temperature-sensitive color-changing part, and the temperature-sensitive color-changing part can indicate the temperature;

[0053] (3) The temperature-sensitive color-changing part adopts heat-sensitive materials, so that it can change color according to the temperature of the cable body to directly reflect the temperature of the cable body;

[0054] (4) The mounting member 10 is clamped with the cable body 20 through the cable clamping groove 11, so that the mounting member 10 fully senses the heat generated by the cable body, and the temperature-sensitive color-changing portion accurately reflects the temperature of the cable body;

[0055] (5) The cable temperature measuring device has a simple structure, is lightweight, easy to disassemble and assemble, firmly installed, and has low cost;

[0056] (6) The cable temperature measuring device can be installed at any position of the cable core and is not affected by the cross-lamination of the cable body.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cable temperature measuring device, characterized in that: The cable temperature measuring device comprises: The mounting member (10) has a cable slot (11), and the mounting member (10) can be engaged with the cable body (20) through the cable slot (11); The temperature-sensitive color-changing portion is arranged on the mounting member (10), and the temperature-sensitive color-changing portion has a display surface located on a side of the mounting member (10) away from the cable slot (11).

2. The cable temperature measuring device according to claim 1, characterized in that: The cable clamping slot (11) and the temperature-sensitive color-changing portion are respectively arranged on two opposite sides of the mounting member (10).

3. The cable temperature measuring device according to claim 1, characterized in that: The temperature-sensitive color-changing portion comprises a temperature-sensitive color-changing coating provided on the outer surface of the mounting member (10).

4. The cable temperature measuring device according to claim 3, characterized in that: The cable temperature measuring component also includes a transparent protective layer, which covers the side of the temperature-sensitive color-changing coating that is away from the mounting component (10).

5. The cable temperature measuring device according to claim 1, characterized in that: The mounting piece (10) is made of elastic material.

6. The cable temperature measuring device according to claim 1, characterized in that: The cable slot (11) extends along the length direction of the mounting component (10), and the cable slot (11) passes through both ends of the mounting component (10).

7. The cable temperature measuring device according to claim 1, characterized in that: The cable clamping groove (11) adopts an arc groove structure, and the central angle of the arc groove structure is greater than 180° and less than 360°.

8. The cable temperature measuring device according to claim 1, characterized in that: The mounting member (10) comprises: The main body has a heat conduction channel, the cable slot (11) and the temperature-sensitive color-changing portion are both arranged on the main body, one end of the heat conduction channel passes through the cable slot (11), and the other end of the heat conduction channel extends to the temperature-sensitive color-changing portion; A heat conducting member is inserted into the heat conducting channel, one end of the heat conducting member is provided with a contact surface matched with the cable slot (11), and the other end of the heat conducting member is in contact with the temperature-sensitive color changing portion.

9. The cable temperature measuring device according to claim 1, characterized in that: The cable temperature measuring component also includes a connecting component, which is arranged on the mounting component (10) and can be connected to the cable body (20).

10. The cable temperature measuring device according to claim 9, characterized in that: The connecting member comprises a connecting strap, a buckle and a clamping ring; one end of the connecting strap is connected to the mounting member (10); the buckle is arranged at the other end of the connecting strap; the clamping ring is arranged on the mounting member (10); the buckle can be connected to the clamping ring; when the buckle is connected to the clamping ring, the connecting strap and the cable slot (11) are arranged to form a threading hole.

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