High-voltage cable intermediate joint temperature measuring device

Abstract

The utility model relates to a temperature measuring device for an intermediate joint of a high-voltage cable, and the device comprises an installation hoop which comprises semicircular hoops, and the two semicircular hoops are connected with each other through a screw and a nut; the semicircular hoop comprises an arc-shaped groove and a guide groove; the movable part is arranged in the guide groove and comprises a mounting block and a hollow cylinder; the mounting part is arranged between the movable parts and extends into the hollow cylinder; the spring is arranged in the movable part and is in contact with the mounting part; the wireless temperature measurement sensor is arranged in the mounting piece; and the clamping block is arranged in the arc-shaped groove. According to the utility model, the wireless temperature measurement sensor can be fixed outside the cable and is in contact with the outer surface of the cable through the cooperation of the semicircular hoops, the movable member, the installation member and the like, thereby achieving the temperature measurement effect, and there is enough space between the installation hoops for heat dissipation.

Description

Technical Field

[0001] The utility model relates to a cable joint temperature measuring device, in particular to a high-voltage cable middle joint temperature measuring device. Background Art

[0002] High-voltage cable is a type of power cable, which refers to a power cable used to transmit power between 1kv-1000kv. It is mostly used in power transmission and distribution. The components of high-voltage cable from the inside to the outside include: conductor, insulation, inner sheath, filler (armor) and outer insulation.

[0003] During use, high-voltage cables are usually connected using joints, so that the high-voltage cables at both ends are connected into a whole cable. The joint is more likely to heat up than other parts of the high-voltage cable. Therefore, a temperature measuring device is usually used to measure the temperature of the joint. Common temperature measuring devices are generally fixed at the cable joint through a sleeve;

[0004] For example, Chinese patent CN221260152U discloses a cable joint temperature measuring device, which increases the sensing area by arranging a T-type probe and a cable splicing sleeve to cooperate with each other, so that the sensing result is more accurate. Since the cable splicing sleeve (i.e., the sleeve) is sleeved on the outside of the cable joint, when the joint is heated, the heat is limited to the inside of the splicing sleeve, resulting in the joint being unable to dissipate heat normally, causing the temperature of the joint to rise, thereby affecting the temperature measurement effect and making the detection result inaccurate. Therefore, a high-voltage cable intermediate joint temperature measuring device is proposed to solve the above-mentioned problems. Utility Model Content

[0005] Based on the above description, the utility model provides a temperature measuring device for a high-voltage cable intermediate joint to solve the problem that heat is not easily dissipated at the cable joint fixed by a sleeve, resulting in inaccurate detection results.

[0006] The utility model solves the above-mentioned technical problem through the following technical solution: a temperature measuring device for an intermediate joint of a high-voltage cable, comprising: a mounting hoop, the mounting hoop comprising a semicircular hoop, the two semicircular hoops being connected to each other by screws and nuts, the semicircular hoop comprising an arcuate groove and a guide groove, a movable part being arranged inside the guide groove, and comprising a mounting block and a hollow cylinder, the mounting part being arranged between the movable parts and extending to the inside of the hollow cylinder, a spring being arranged inside the movable part and in contact with the mounting part, a wireless temperature measuring sensor being arranged inside the mounting part, and a card block being arranged inside the arcuate groove.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the semicircular hoop includes a hoop body, and the outer surface of the hoop body is provided with mounting ears.

[0009] Furthermore, a guide groove is provided on the surface of the hoop body, and a limiting groove is provided on the inner surface of the guide groove.

[0010] Furthermore, an arc-shaped groove is arranged on the inner surface of the hoop body, and a through hole is arranged on the outer surface of the hoop body, and the through hole is communicated with the arc-shaped groove.

[0011] Furthermore, the movable part includes two mounting blocks, the two mounting blocks are connected to each other by screws, and a hollow cylinder is provided on the surface of the mounting block on the side away from the semicircular hoop.

[0012] Furthermore, a spherical groove is provided on one opposite side of the mounting block, a ball is provided inside the spherical groove, and the ball extends to the outside of the spherical groove and to the inside of the limiting groove.

[0013] Furthermore, the mounting member includes a hollow frame, the outer surface of the hollow frame is provided with a side hole, and the inside of the side hole is provided with a wireless temperature measuring sensor through a screw.

[0014] Furthermore, a T-bar is provided on the outer surface of the hollow frame, the T-bar is provided between the movable parts on both sides and extends to the inside of the hollow tube, and a spring is provided between the T-bar and the movable part.

[0015] Furthermore, the clamping block includes a block body, the block body is arranged inside the arc groove, a threaded rod is arranged on one side of the block body close to the movable part, and the threaded rod passes through the through hole and is connected to the semicircular hoop through a nut.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] 1. The utility model uses a semicircular hoop, a movable part, a mounting part and other components, and through the cooperation relationship between the above three, the wireless temperature sensor can be fixed on the outside of the cable and contact with the outer surface of the cable to achieve the effect of temperature measurement, and there is enough space between the mounting hoops for heat dissipation, thereby avoiding the problem of failure to perform normal heat dissipation;

[0018] 2. By setting the clamp block, the installation hoop is closely fitted with the cable through the clamp block, so that the installation hoop is connected to the cable through the clamp block. At this time, there is space between the installation hoop and the cable, so that the heat dissipation can be carried out normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a temperature measuring device for a high-voltage cable intermediate joint provided by an embodiment of the utility model;

[0020] Figure 2 for Figure 1 Structural cross-sectional view of

[0021] Figure 3 for Figure 2 A structural diagram from another perspective;

[0022] Figure 4 This is a schematic diagram of the structure of a semicircular hoop in an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the movable parts in the embodiment of the utility model;

[0024] Figure 6 for Figure 5 Schematic diagram of the explosion structure;

[0025] Figure 7 This is a schematic diagram of the structure of the mounting member in the embodiment of the utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the card block in the embodiment of the utility model;

[0027] Fig. 9 This is a schematic diagram of the use status of the temperature measuring device in the embodiment of the utility model;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Semicircular hoop; 11. Hoop body; 12. Mounting ear; 13. Arc groove; 14. Through hole; 15. Guide groove; 16. Limit groove; 2. Movable part; 21. Mounting block; 22. Spherical groove; 23. Ball; 24. Hollow cylinder; 3. Mounting part; 31. Hollow frame; 32. Side hole; 33. T-bar; 4. Spring; 5. Wireless temperature sensor; 6. Block; 61. Block; 62. Threaded rod. DETAILED DESCRIPTION

[0030] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0032] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0033] See also Figure 1 , Figure 2 and Figure 4 , a temperature measuring device for a high-voltage cable intermediate joint, comprising:

[0034] The mounting hoop comprises a semicircular hoop 1, wherein two semicircular hoops 1 are connected to each other via screws and nuts;

[0035] The semicircular hoop 1 comprises a hoop body 11, the outer surface of the hoop body 11 is provided with a mounting ear 12, the surface of the hoop body 11 is provided with a guide groove 15, the inner surface of the guide groove 15 is provided with a limiting groove 16, the inner surface of the hoop body 11 is provided with an arc groove 13, the outer surface of the hoop body 11 is provided with a through hole 14, and the through hole 14 is connected with the arc groove 13;

[0036] Based on the above, the mounting ear 12 cooperates with the screw and the nut so that the two semicircular hoops 1 can be connected to each other, the arc groove 13 and the through hole 14 cooperate with each other to fix the block 6, so that the block 6 and the semicircular hoop 1 are connected to each other, and the guide groove 15 and the limit groove 16 cooperate with each other so that the movable part 2 can move along the direction of the guide groove 15.

[0037] like Figure 5 and Figure 6 As shown, the movable member 2 is arranged inside the guide groove 15 and includes a mounting block 21 and a hollow cylinder 24;

[0038] The movable member 2 includes two mounting blocks 21, the two mounting blocks 21 are connected to each other by screws, a hollow cylinder 24 is provided on the surface of the mounting block 21 on the side away from the semicircular hoop 1, and a spherical groove 22 is provided on the opposite side of the mounting block 21, and a ball 23 is provided inside the spherical groove 22, and the ball 23 extends to the outside of the spherical groove 22 and extends to the inside of the limiting groove 16;

[0039] Based on the above, the ball 23 plays a role of auxiliary movement on the one hand, making the movable part 2 move more smoothly, and on the other hand cooperates with the limiting groove 16 so that the movable part 2 can only move along the direction of the limiting groove 16.

[0040] like Figure 2 , Figure 3and Figure 7 As shown, a mounting member 3 is arranged between the movable members 2 and extends to the inside of the hollow cylinder 24. The mounting member 3 includes a hollow frame 31. The outer surface of the hollow frame 31 is provided with a side hole 32. The inside of the side hole 32 is provided with a wireless temperature sensor 5 through a screw. The outer surface of the hollow frame 31 is provided with a T-bar 33. The T-bar 33 is arranged between the movable members 2 on both sides and extends to the inside of the hollow cylinder 24. A spring 4 is arranged between the T-bar 33 and the movable member 2.

[0041] a spring 4, which is arranged inside the movable part 2 and in contact with the mounting part 3;

[0042] A wireless temperature sensor 5, which is arranged inside the mounting member 3;

[0043] Based on the above, the mounting member 3 is fixed between the movable members 2 by clamping, and the spring 4 increases the stability of the mounting member 3 during installation. The screws and the side holes 32 cooperate with each other, so that the wireless temperature sensor 5 is arranged inside the hollow frame 31. The wireless temperature sensor 5 can use a sensor with model ATE100M.

[0044] like Figure 2 , Figure 3 and Figure 8 As shown, a clamping block 6 is arranged inside the arc groove 13, and the clamping block 6 includes a block body 61, and the block body 61 is arranged inside the arc groove 13. A threaded rod 62 is arranged on one side of the block body 61 close to the movable member 2, and the threaded rod 62 passes through the through hole 14 and is connected to the semicircular hoop 1 through a nut;

[0045] Based on the above, the clamp block 6 and the semicircular hoop 1 cooperate with each other to fix the installation hoop. The clamp block 6 fits tightly against the cable surface, thereby fixing the installation hoop. After being fixed by the clamp block 6, there is enough space between the installation hoop and the cable to facilitate heat dissipation.

[0046] In actual use, this embodiment is provided with the device on the outer surface of the cable, such as Fig. 9 As shown, at this time, the wireless temperature sensor 5 is in contact with the outer surface of the cable, and when the cable joint is heated, the wireless temperature sensor 5 can measure the temperature thereof;

[0047] Due to the arrangement of the semicircular hoop 1, there is a sufficiently large space between the semicircular hoop 1 and the cable connection and the wireless temperature sensor 5, so that the cable at the wireless temperature sensor 5 is in an open state and can directly exchange heat with the outside air (i.e., normal heat dissipation), thereby avoiding the situation where the heat cannot be dissipated and the detection result is inaccurate;

[0048] By setting the clamp block 6, there is enough space when the semicircular hoop 1 is connected to the cable, so that the air can flow normally to ensure that the heat can be dissipated normally;

[0049] By setting the movable part 2, when the movable part 2, the mounting part 3 or the wireless temperature sensor 5 is subjected to external force, i.e., collision, impact or strong wind force, the movable part 2 can move along the direction of the guide groove 15. During the movement, not only can the external force be consumed, but the position of the wireless temperature sensor 5 is changed after the movement, so that the force can be unloaded, which effectively increases the safety of the wireless temperature sensor 5 when in use.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A temperature measuring device for a high voltage cable intermediate joint, characterized in that: include: A mounting hoop, comprising a semicircular hoop (1), wherein two semicircular hoops (1) are connected to each other via screws and nuts; A semicircular hoop (1), comprising an arc-shaped groove (13) and a guide groove (15); A movable member (2) is arranged inside the guide groove (15) and comprises a mounting block (21) and a hollow cylinder (24); A mounting member (3) disposed between the movable members (2) and extending into the interior of the hollow cylinder (24); a spring (4), which is arranged inside the movable part (2) and in contact with the mounting part (3); A wireless temperature sensor (5) is arranged inside the mounting member (3); A clamping block (6) is arranged inside the arc-shaped groove (13).

2. The high-voltage cable intermediate joint temperature measuring device according to claim 1 is characterized in that: The semicircular hoop (1) comprises a hoop body (11), and the outer surface of the hoop body (11) is provided with a mounting ear (12).

3. The high-voltage cable intermediate joint temperature measuring device according to claim 2 is characterized in that: The surface of the hoop body (11) is provided with a guide groove (15), and the inner surface of the guide groove (15) is provided with a limiting groove (16).

4. The high-voltage cable intermediate joint temperature measuring device according to claim 3 is characterized in that: The inner surface of the hoop body (11) is provided with an arc-shaped groove (13), and the outer surface of the hoop body (11) is provided with a through hole (14), and the through hole (14) and the arc-shaped groove (13) are communicated with each other.

5. The high-voltage cable intermediate joint temperature measuring device according to claim 3 is characterized in that: The movable part (2) comprises two mounting blocks (21), the two mounting blocks (21) are connected to each other by screws, and a hollow cylinder (24) is provided on the surface of the mounting block (21) on the side away from the semicircular hoop (1).

6. The high-voltage cable intermediate joint temperature measuring device according to claim 5, characterized in that: A spherical groove (22) is provided on one opposite side of the mounting block (21), a ball (23) is provided inside the spherical groove (22), and the ball (23) extends to the outside of the spherical groove (22) and to the inside of the limiting groove (16).

7. The high-voltage cable intermediate joint temperature measuring device according to claim 1, characterized in that: The mounting member (3) comprises a hollow frame (31), the outer surface of the hollow frame (31) is provided with a side hole (32), and the interior of the side hole (32) is provided with a wireless temperature measurement sensor (5) via a screw.

8. The high-voltage cable intermediate joint temperature measuring device according to claim 7, characterized in that: The outer surface of the hollow frame (31) is provided with a T-bar (33), the T-bar (33) is arranged between the movable parts (2) on both sides and extends into the interior of the hollow cylinder (24), and a spring (4) is arranged between the T-bar (33) and the movable part (2).

9. The high-voltage cable intermediate joint temperature measuring device according to claim 4, characterized in that: The clamping block (6) comprises a block body (61), wherein the block body (61) is arranged inside the arc groove (13), and a threaded rod (62) is arranged on one side of the block body (61) close to the movable part (2), and the threaded rod (62) passes through the through hole (14) and is connected to the semicircular hoop (1) via a nut.

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