A temperature measuring device for power cable

Abstract

The present invention discloses a temperature measuring device for a power cable, comprising a first half shell, a second half shell, a limit rod, a pressure plate and a limit cylinder, wherein the bottoms of both sides of the second half shell and the tops of both sides of the first half shell are respectively provided with semicircular grooves, and the two semicircular grooves constitute an opening. The temperature measuring device for a power cable of the present invention can detect the cable at other positions by turning the adjusting screw to rotate, and the movement of the adjusting screw drives the limit rod to move until the limit rod is moved to a suitable position, and then the detection box can be directly moved, and the operation is relatively simple. If the displacement fluctuation of the detection box is large, the cable will exert a certain force on the first roller, and at this time the first roller will drive the movable block to move upward, and the movement of the movable block will exert a certain extrusion force on the extrusion spring, and the elastic action of the extrusion spring can reduce the impact force on the cable, thereby reducing the possibility of damage to the cable.

Description

Technical Field

[0001] The invention relates to a temperature measuring device, in particular to a temperature measuring device for a power cable. Background Art

[0002] With the development of the power system, the voltage and current of the cable load are constantly increasing, which will inevitably lead to the temperature of the cable approaching the limit temperature during operation; in addition, when the cable joints and the power system are not working properly (such as overload, short circuit tripping, etc.), the temperature rise of the cable may also be abnormal. Therefore, how to use effective methods to monitor the temperature changes of the cable during operation and operation is an important issue to ensure the safety of the power system, and it is also of great significance to the production and life that use electricity.

[0003] According to the "A power cable temperature measuring device" disclosed in the Chinese utility model patent (application number: CN201820740675.3, application date: 2018.05.18), its structure is "including a detection cylinder, through holes are arranged on both sides of the detection cylinder, rollers are arranged inside the through holes and on both sides of the detection cylinder, a temperature sensor is arranged inside the detection cylinder, a single-chip microcomputer is arranged on the top of the inner side of the detection cylinder, an alarm is arranged on the top of the detection cylinder, a support plate is arranged on the bottom of the inner side of the detection cylinder, and a support pad is arranged on the top of the support plate. By arranging the detection cylinder and the roller, the temperature of the cable in the detection cylinder is higher than the temperature outside the detection cylinder, the information can be transmitted to the staff through the alarm in time, sufficient time can be left for handling, and the temperature of the cable in the detection cylinder is less affected by wind, and the temperature inside and outside the cable is The difference is small. When it is necessary to detect cables at other positions, the limit rod is lifted upward by the operating rod to push the detection cylinder to move. The cable moves on the roller, which is beneficial to improve the timeliness of the detection and is more convenient to use. However, there are still some shortcomings in use. For example, when detecting other positions of the cable, it is necessary to lift the operating rod to the upper limit rod, and then move the detection cylinder, which is inconvenient. In addition, in the process of moving the detection cylinder, since it is a manual operation, the position of the detection cylinder is greatly moved, and the surface of the cable will be affected by the force of the roller and may be damaged. Since the temperature sensor at the bottom of the pressure plate is in contact with the cable for a long time, it may be damaged when the force between the two is large, and the detection cylinder is closed, which is not convenient for replacing the temperature sensor. Therefore, we make improvements to this and propose a temperature measuring device for power cables. Summary of the invention

[0004] In order to solve the defects in the prior art, the present invention provides a temperature measuring device for a power cable.

[0005] The present invention is implemented with the following technical scheme: a temperature measuring device for a power cable, comprising a first half detection shell, a second half detection shell, a limit rod, a pressure plate and a limit cylinder, the bottoms on both sides of the second half detection shell and the tops on both sides of the first half detection shell are respectively provided with semicircular grooves, the two semicircular grooves constitute an opening, a first roller is arranged at the bottom of the opening on the first half detection shell, elastic mechanisms are arranged on both sides of the first roller, second rollers are arranged in the two openings, the limit cylinder is fixedly arranged in the middle of the top end of the inner cavity of the second half detection shell, an extrusion spring is arranged at the top end of the inner cavity of the limit cylinder, the top end of the limit rod is fixedly connected with the extrusion spring, the bottom end of the limit rod passes through the limit cylinder and is slidably plugged with the limit cylinder, the pressure plate is detachably arranged at the bottom end of the limit rod, a connecting rod is fixedly arranged on one side of the bottom of the limit rod, and an adjusting screw for adjusting the position height of the limit rod is arranged at the top end of the connecting rod.

[0006] As a preferred technical solution of the present invention, the elastic mechanism includes two first fixed blocks, two movable blocks and two compression springs. The two first fixed blocks are fixedly connected to the first half detection shell, and the two movable blocks are respectively matched and placed in the slide grooves opened on the two first fixed blocks. The two ends of the first roller are respectively rotatably connected to the two movable blocks through bearings, and the two compression springs are respectively fixedly arranged on the top ends of the two movable blocks.

[0007] As a preferred technical solution of the present invention, the top ends of the two compression springs are fixedly connected to the top ends of the two slide grooves, and a sliding rod is provided in the compression springs, the two ends of the sliding rod are fixedly connected to the two ends of the slide grooves, and the sliding rod is slidably connected to the movable block.

[0008] As a preferred technical solution of the present invention, both ends of the second roller are rotatably connected to second fixed blocks via bearings, and the bottom ends of the two second fixed blocks are fixedly connected to the bottom end of the inner wall of the opening.

[0009] As a preferred technical solution of the present invention, the bottom end of the adjusting screw is rotatably connected to the connecting rod via a bearing, and the top end of the adjusting screw passes through the second half detection housing and is threadedly plugged into the second half detection housing.

[0010] As a preferred technical solution of the present invention, a sleeve is fixedly provided in the middle of the top of the pressure plate, an inner wall of the sleeve is provided with an internal thread, and an outer bottom end of the limiting rod is provided with an external thread matching the internal thread.

[0011] As a preferred technical solution of the present invention, one side of the first half detection shell and the second half detection shell are hinged by a hinge, and the other side of the first half detection shell and the second half detection shell are overlapped by a buckle, a detection box is formed between the first half detection shell and the second half detection shell, and a handle is fixedly provided on the first half detection shell.

[0012] The beneficial effect of the present invention is that when the temperature measuring device of the power cable is used to detect the cable at other positions, the adjusting screw can be turned to rotate, and the movement of the adjusting screw drives the limit rod to move until the limit rod is moved to a suitable position, and then the detection box can be directly moved, and the operation is relatively simple. If the displacement fluctuation of the detection box is large, the cable will exert a certain force on the first roller. At this time, the first roller will drive the movable block to move upward, and the movement of the movable block will exert a certain extrusion force on the extrusion spring. Through the elastic action of the extrusion spring, the impact force on the cable can be reduced, thereby reducing the possibility of damage to the cable. When the temperature sensor at the bottom of the pressure plate is damaged, the buckle can be opened to separate the first half detection shell and the second half detection shell, and then the pressure plate can be rotated to separate the pressure plate and the limit rod, thereby facilitating the replacement of the temperature sensor at the bottom of the pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0016] Figure 3 yes Figure 2 A schematic diagram of a local enlarged structure;

[0017] Figure 4 is a schematic diagram of the elastic mechanism structure;

[0018] Figure 5 It is a schematic diagram of the connection structure between the limit rod and the pressure plate.

[0019] In the figure: 1. first half of the detection shell; 2. second half of the detection shell; 3. limit rod; 4. first roller; 5. elastic mechanism; 501. first fixed block; 502. movable block; 503. compression spring; 504. slide rod; 6. opening; 7. pressure plate; 8. limit cylinder; 9. extrusion spring; 10. connecting rod; 11. adjusting screw; 12. sleeve; 13. handle; 14. second roller. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example: Figure 1-5 As shown, a temperature measuring device for a power cable comprises a first half detection shell 1, a second half detection shell 2, a limit rod 3, a pressure plate 7 and a limit cylinder 8. Semicircular grooves are respectively provided at the bottom of both sides of the second half detection shell 2 and the top of both sides of the first detection shell 1. The two semicircular grooves constitute an opening 6. A first roller 4 is provided at the bottom of the opening 6 on the first half detection shell 1. Elastic mechanisms 5 are provided on both sides of the first roller 4. Second rollers 14 are provided in both openings 6. The limit cylinder 8 is fixedly arranged in the middle of the top end of the inner cavity of the second half detection shell 2. An extrusion spring 9 is provided at the top end of the inner cavity of the limit cylinder 8. The top end of the limit rod 3 is fixedly connected to the extrusion spring 9. The bottom end of the limit rod 3 passes through the limit cylinder 8 and is slidably plugged with the limit cylinder 8. The pressure plate 7 is detachably arranged at the bottom end of the limit rod 3. A connecting rod 10 is fixedly provided on one side of the bottom of the limit rod 3. An adjusting screw 11 for adjusting the position height of the limit rod 3 is provided at the top end of the connecting rod 10.

[0022] The elastic mechanism 5 includes two first fixed blocks 501, two movable blocks 502 and two compression springs 503. The two first fixed blocks 501 are fixedly connected to the first half detection housing 1. The two movable blocks 502 are respectively matched and placed in the slide grooves opened on the two first fixed blocks 501. The two ends of the first roller 4 are respectively rotatably connected to the two movable blocks 502 through bearings. The two compression springs 503 are respectively fixedly arranged on the top ends of the two movable blocks 502. The top ends of the two compression springs 503 are respectively fixedly connected to the top ends of the two slide grooves. A sliding rod 504 is provided in cooperation with the compression spring 503, and the two ends of the sliding rod 504 are respectively fixedly connected to the two ends of the slide groove, and the sliding rod 504 is slidably plugged into the movable block 502. When the detection cylinder is moved, if the displacement fluctuation of the detection cylinder is large, the cable will exert a certain force on the first roller 4. At this time, the first roller 4 will drive the movable block 502 to move upward. The movement of the movable block 502 generates a certain squeezing force on the squeezing spring 9. Through the elastic action of the squeezing spring 9, the impact force on the cable can be reduced, reducing the possibility of damage to the cable.

[0023] Wherein, both ends of the second roller 14 are rotatably connected to second fixing blocks via bearings, and the bottom ends of the two second fixing blocks are fixedly connected to the bottom end of the inner wall of the opening 6 .

[0024] Among them, the bottom end of the adjusting screw 11 is rotatably connected to the connecting rod 10 through a bearing, and the top end of the adjusting screw 11 passes through the second half detection shell 2 and is threadedly plugged with the second half detection shell 2. When the detection cylinder is moved, the adjusting screw 11 can be turned to rotate, and the movement of the adjusting screw 11 drives the limit rod 3 to move until the limit rod 3 is moved to a suitable position. In this way, there is no need to carry the operating lever all the time during the process of moving the detection cylinder, and the operation is relatively simple.

[0025] Among them, a sleeve 12 is fixedly arranged in the middle of the top of the pressure plate 7, the inner wall of the sleeve 12 is arranged with an internal thread, and the outside of the bottom end of the limiting rod 3 is arranged with an external thread matching the internal thread. By threading the sleeve 12 and the limiting rod 3, when the temperature sensor at the bottom of the pressure plate 7 is damaged, the first half detection shell 1 and the second half detection shell 2 can be opened, and then the pressure plate 7 and the limiting rod 3 are separated, and the pressure plate 7 is disassembled, so as to facilitate the replacement of the temperature sensor at the bottom of the pressure plate 7.

[0026] Among them, the first half detection shell 1 is hinged to one side of the second half detection shell 2 by a hinge, and the other side of the first half detection shell 1 is overlapped with the second half detection shell 2 by a buckle, and the first half detection shell 1 and the second half detection shell 2 constitute a detection box, and a handle 13 is fixedly provided on the first half detection shell 1, and the detection box is convenient to carry through the provided handle 13.

[0027] Working principle: When testing cables at other positions, the adjusting screw 11 can be turned to rotate. The movement of the adjusting screw 11 drives the limit rod 3 to move until the limit rod 3 is moved to a suitable position, and then the detection box is moved to move. During the movement process, if the displacement fluctuation of the detection box is large, the cable will exert a certain force on the first roller 4. At this time, the first roller 4 will drive the movable block 502 to move upward. The movement of the movable block 502 will exert a certain extrusion force on the extrusion spring 9. Through the elastic action of the extrusion spring 9, the impact force on the cable can be reduced, thereby reducing the possibility of damage to the cable. When the temperature sensor at the bottom of the pressure plate 7 is damaged, the first half detection shell 1 and the second half detection shell 2 can be opened, and then the pressure plate 7 and the limit rod 3 are separated, and the pressure plate 7 is disassembled, so as to facilitate the replacement of the temperature sensor at the bottom of the pressure plate 7.

[0028] In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connected", and "connected" 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 an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. 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 temperature measuring device for a power cable, comprising a first half detection housing (1), a second half detection housing (2), a limit rod (3), a pressure plate (7) and a limit cylinder (8), characterized in that: The bottoms of both sides of the second half detection shell (2) and the tops of both sides of the first half detection shell (1) are respectively provided with semicircular grooves facing each other, the two semicircular grooves forming an opening (6), a first roller (4) is provided at the bottom of the opening (6) on the first half detection shell (1), elastic mechanisms (5) are provided on both sides of the first roller (4), second rollers (14) are provided in both openings (6), the limiting cylinder (8) is fixedly provided at the middle of the top end of the inner cavity of the second half detection shell (2), the limiting cylinder (8) ) is provided with a pressing spring (9) at the top end of the inner cavity, the top end of the limiting rod (3) is fixedly connected to the pressing spring (9), the bottom end of the limiting rod (3) passes through the limiting tube (8) and is slidably plugged with the limiting tube (8), the pressing plate (7) is detachably arranged at the bottom end of the limiting rod (3), a connecting rod (10) is fixedly arranged on one side of the bottom of the limiting rod (3), and an adjusting screw (11) for adjusting the position height of the limiting rod (3) is provided at the top end of the connecting rod (10), and turning the adjusting screw (11) drives the limiting rod (3) to move The elastic mechanism (5) comprises two first fixed blocks (501), two movable blocks (502) and two compression springs (503); the two first fixed blocks (501) are fixedly connected to the first half detection housing (1); the two movable blocks (502) are respectively matched and placed in the slide grooves opened on the two first fixed blocks (501); the two ends of the first roller (4) are respectively rotatably connected to the two movable blocks (502) through bearings; the two compression springs (503) are respectively fixedly arranged on the two movable blocks (502) The top ends of the two compression springs (503) are respectively fixedly connected to the top ends of the two slide grooves, and a slide rod (504) is provided in the compression spring (503) in cooperation with each other, and the two ends of the slide rod (504) are respectively fixedly connected to the two ends of the slide groove, and the slide rod (504) is slidably plugged into the movable block (502); the bottom end of the adjusting screw (11) is rotatably connected to the connecting rod (10) via a bearing, and the top end of the adjusting screw (11) passes through the second half detection housing (2) and is threadedly plugged into the second half detection housing (2).

2. A temperature measuring device for a power cable according to claim 1, characterized in that: Both ends of the second roller (14) are rotatably connected to second fixed blocks via bearings, and the bottom ends of the two second fixed blocks are fixedly connected to the bottom end of the inner wall of the opening (6).

3. The temperature measuring device for a power cable according to claim 1, characterized in that: A sleeve (12) is fixedly arranged in the middle of the top end of the pressure plate (7), an inner wall of the sleeve (12) is provided with an internal thread, and an outer portion of the bottom end of the limiting rod (3) is provided with an external thread matching the internal thread.

4. The temperature measuring device for a power cable according to claim 1, characterized in that: One side of the first half detection shell (1) is hinged to the second half detection shell (2), and the other side of the first half detection shell (1) is overlapped with the second half detection shell (2) by a buckle. The first half detection shell (1) and the second half detection shell (2) form a detection box, and a handle (13) is fixedly provided on the first half detection shell (1).

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