Wireless temperature measuring device for power cable

Abstract

The utility model relates to the technical field of temperature measuring devices, in particular to a wireless temperature measuring device for a power cable, which comprises a clamping assembly, the clamping assembly comprises a support and two symmetrically arranged clamping plates, the two clamping plates are mounted at the bottom of the support, and the support controls the two clamping plates to be clamped on the cable; the device further comprises a temperature measuring assembly, the temperature measuring assembly comprises a temperature sensor, a guide rail and a rack, the guide rail is installed on the support, the rack is installed on the guide rail, and the temperature sensor is installed on the side edge of the rack. According to the utility model, the clamping assembly is arranged and can be tightly sleeved on the cable, so that the temperature measuring assembly is stably arranged on the side edge of the cable, and the temperature change of the cable in one day can be detected through the temperature sensor, and detailed temperature parameters can be obtained, so that a worker can make a corresponding prevention scheme according to the temperature change; the current situations that data detected manually is not comprehensive enough, and other devices are high in cost and inconvenient to install are changed.

Description

TECHNICAL FIELD

[0001] The utility model relates to temperature measuring device technical field, especially in a kind of wireless temperature measuring device for power cable. BACKGROUND

[0002] Power system operating condition is complex and changeable, there are many situations that can make cable temperature abnormally high. In high load operation period, such as summer air conditioning use peak or industrial production season, power demand increases dramatically, the current carried by cable increases significantly, the heat generated far exceeds normal level, the risk of overheating significantly increases. And in high temperature environment, like summer outdoor cable, external heat transfer will hinder its own heat dissipation, further push up the cable temperature. For those cables that have been used for a long time or have defects, insulation aging, local damage and other problems can increase the resistance, heat more serious, at any time may cause failure. Newly built or reconstructed cable in initial operation period, due to construction technology, equipment running-in and other reasons, the running state is unstable, and temperature abnormality is also prone to occur. And, if there are industrial furnaces, steam pipes and other external heat sources around the cable, heat conduction and heat radiation will increase the ambient temperature around the cable, which also affects the safe operation of the cable. Therefore, it is necessary to detect the temperature of power cable regularly to make corresponding measures.

[0003] Early, power cable temperature measurement mainly relies on regular inspection by artificial, through touching cable skin or using simple infrared thermometer to measure surface temperature. This way is not convenient for long time monitoring of cable, and cannot obtain the temperature change of cable in a day, that is, it is difficult to achieve real-time monitoring, which is not conducive to the targeted plan of power workers. With the development of technology, some traditional online temperature measurement technologies are gradually applied, such as optical fiber temperature measurement technology, which has the advantages of high precision, anti-electromagnetic interference and the like, but the cost is high, and the installation and maintenance are difficult, which limits its large-scale promotion. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of wireless temperature measuring device for power cable, to improve the problem that artificial detection cable temperature is not comprehensive, or traditional temperature measuring equipment cost is high, inconvenient installation.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following scheme:

[0006] A kind of wireless temperature measuring device for power cable, including clamping assembly, clamping assembly includes support and two symmetrical clamping plates, two clamping plates are installed at the bottom of support, support controls two clamping plates clamping on cable;It also includes temperature measuring assembly, temperature measuring assembly includes temperature sensor, guide rail and rack, guide rail is installed on support, rack is installed on guide rail, temperature sensor is installed on the side of rack, and temperature sensor is arranged towards cable, motor control rack drives temperature sensor to move installed on the side of guide rail.

[0007] Further, the bracket comprises a base arranged in a gap formed by the top of the two clamping plates, a second end pipe and a first end pipe are arranged at the adjacent ends of the base and the clamping plates respectively, the first end pipe and the second end pipe are sleeved on the same shaft body; the two clamping plates are spliced to form an arc structure with a central angle greater than 180 degrees.

[0008] Further, the bracket further comprises a threaded rod, the bottom of the threaded rod is connected and inserted into the base through a bearing; the upper part of each clamping plate is hingedly provided with an inclined support plate, the top of the two inclined support plates is hingedly provided with an internally threaded pipe, and the internally threaded pipe is threadedly sleeved on the threaded rod.

[0009] Further, a top ball is arranged at the top of the threaded rod, a plug-in column is fixedly arranged at the bottom of the top ball, a counterbore is arranged through the top ball and the plug-in column, and a bolt is arranged through the counterbore.

[0010] Further, a plug-in groove is arranged on the top surface of the threaded rod, the plug-in groove and the plug-in column are arranged as a matched concave-convex structure, the plug-in column is inserted into the plug-in groove, and the bottom of the bolt is threadedly inserted into the bottom of the plug-in groove.

[0011] Further, the guide rail comprises one splicing plate, the side edge of the splicing plate is fixedly provided with a fixed plate, the side edge of the fixed plate is connected and arranged with a clamping arc plate through a bolt, and the threaded rod is arranged through the space formed by the clamping arc plate and the fixed plate.

[0012] Further, the rack is also arranged as one, and a guide plate is fixedly arranged on the inner side surface of the rack; a guide groove is arranged on the outer side wall of the splicing plate; the end surface formed by the guide plate and the rack and the end surface of the guide groove are both arranged as a convex structure; the guide plate is arranged in the guide groove, and the rack protrudes out of the guide groove.

[0013] Further, a support plate is fixedly arranged at the part of the rack protruding out of the guide groove, and a temperature sensor is arranged through the support plate; a support plate is fixedly arranged on the side edge of the splicing plate, a motor is arranged on the support plate, and a gear arranged on the power output shaft of the motor is connected with the rack in meshing.

[0014] Further, one more splicing plate can be additionally arranged, and the two splicing plates are connected and arranged in an upper-lower distribution mode through the ear plates at the ends thereof and bolts; and one more rack is additionally arranged, and the two racks are arranged in a first-last connection mode in the two guide grooves in communication.

[0015] Further, an electrical control box is additionally arranged, the motor and the temperature sensor are connected with the electrical control box, and the electrical control box is connected with a mobile power supply.

[0016] Compared with the prior art, the bracket has the following beneficial effects:

[0017] 1. The utility model discloses a clamping assembly, can be fastened and set on the cable when the power system regular inspection, and then makes the temperature measuring assembly stable setting at the side of cable, can detect the temperature change of cable in a day through temperature sensor, obtains more detailed temperature parameter, so that the power staff makes corresponding preventive scheme accordingly, changes the data of manual detection not enough comprehensive, other equipment cost higher and inconvenient installation's present situation.

[0018] 2. The utility model discloses two clamping plates hinged installation below the base, and the clamping plate is connected with the internal thread pipe of threaded rod through the inclined bracing plate and threaded sleeve, can adjust the height of internal thread pipe through the rotation threaded rod, adjusts the opening and closing angle of two clamping plates, provides support for the fastening and setting of clamping assembly in cable.

[0019] 3. The utility model discloses setting splice plate and rack, and setting guide groove on splice plate, and setting guide plate on the inboard of rack, can stably install rack on splice plate, and provide support for rack driving temperature sensor movement and realize cable multipoint detection. DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the utility model;

[0021] Figure 2 It is the structure schematic diagram of clamping assembly in the utility model;

[0022] Figure 3 It is the structure schematic diagram of support in the utility model;

[0023] Figure 4 It is the structure schematic diagram of clamping plate in the utility model;

[0024] Figure 5 It is the structure schematic diagram of temperature measuring assembly in the utility model;

[0025] Figure 6 It is the structure schematic diagram of guide rail in the utility model;

[0026] Figure 7 It is the structure schematic diagram of rack in the utility model.

[0027] In the drawing:

[0028] 1, clamping assembly; 11, clamping plate; 111, first end tube; 112, inclined support plate; 113, internally threaded tube; 12, support; 121, base; 122, second end tube; 123, threaded rod; 124, insertion slot; 125, top ball; 126, insertion column; 127, counterbore; 2, temperature measurement assembly; 21, temperature sensor; 22, guide rail; 221, ear plate; 222, fixed plate; 223, clamping arc plate; 224, splicing plate; 225, guide groove; 23, rack; 231, guide plate; 232, support plate; 24, support plate; 3, motor; 31, gear; 4, electrical control box. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Unless otherwise clearly and definitely specified and limited, the terms "mounting", "connection", "linking", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection; can be direct connection, or can be indirect connection through an intermediate medium; can be internal connection of two elements, or can be interaction relationship between two elements. For ordinary skilled in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0030] Embodiment one:

[0031] As shown in Figure 1 , Figure 2 , Figure 5 In order to obtain the temperature change parameters of the cable within a day during the periodical inspection of the cable system, reduce the cost of cable temperature monitoring, and facilitate the installation of the monitoring device on the cable, the embodiment provides a device for cable temperature measurement. The device comprises a clamping assembly 1, a temperature measurement assembly 2, an electrical control box 4 and the like. The clamping assembly 1 comprises a support 12 and two symmetrical clamping plates 11, and the two clamping plates 11 are installed at the bottom of the support 12. The temperature measurement assembly 2 comprises a temperature sensor 21, an arc-shaped guide rail 22 and the like, the guide rail 22 is installed on the support 12, the temperature sensor 21 is installed on the side of the guide rail 22, and the temperature sensor 21 is arranged towards the cable. The electrical control box 4 is also installed on the support 12, receives the signals transmitted by the temperature sensor 21, processes and stores these signals.

[0032] When the cable temperature detection is completed by using the above device, the opening and closing angle of the two clamping plates 11 is adjusted by adjusting the state of the support 12, and the central angle of the two clamping plates 11 spliced to form an arc structure greater than 180° is tightly sleeved on the cable, so that the clamping assembly 1 can be stably installed. After the clamping assembly 1 is stabilized, the guide rail 22 is installed on the support 12, and the guide rail 22 is arranged close to the cable. Then the temperature sensor 21 is installed on the side of the guide rail 22, and the end of the temperature sensor is arranged close to and towards the cable. By pressing the button of the electrical control box 4, the device can be started to realize long-time monitoring of the cable. In order to ensure long-time monitoring of the device, a mobile power supply (such as a mobile battery) is also needed for the device, and the mobile power supply is placed on the ground according to the needs, or the mobile power supply is connected below the cable by using a rope.

[0033] In order to be able to receive the signal of the temperature sensor 21, the electrical control box 4 includes a microcontroller (MCU), a temperature sensor interface circuit, a data storage module, a power management module, etc.

[0034] The microcontroller (MCU) is a common STM32 series single-chip microcomputer, which is the core of the control box, can receive the electrical signal output by the temperature sensor, and perform A / D conversion (if the sensor outputs an analog signal) and data processing, such as calculating the average temperature, judging whether the temperature exceeds the threshold value, etc. At the same time, it can also coordinate the work of various devices in the control box.

[0035] The temperature sensor interface circuit includes a signal conditioning circuit, which can perform signal amplification, filtering, and linearization processing for different types of temperature sensors, and convert the weak and easily disturbed signal output by the sensor into a standard level signal suitable for the microcontroller.

[0036] The data storage module can be set as a flash memory chip, such as a W25Q series flash memory with an SPI interface, which is used to store temperature data, device operating parameters, historical alarm records, etc. Even if the control box is powered off, the data will not be lost, which is convenient for subsequent query and analysis.

[0037] The power management module can include power switch devices, filter capacitors, overcurrent, overvoltage and undervoltage protection devices, etc., and can also include voltage conversion chips, so that the electrical control box 4 is connected with the mobile power supply to provide power for the work of various devices.

[0038] A data transmission module can also be provided in the electrical control box 4, which can be a wireless communication module. According to the transmission distance and needs, such as a Bluetooth module (such as HC-05) for short-distance devices such as mobile phones for debugging. A 4G module (such as Yidong EC20 series) can be used for long-distance transmission, which can stably transmit the processed temperature data to the control center through the mobile network.

[0039] As Figure 3 , Figure 4 shown, in order to be able to control the clamping assembly 1 fasten set on the cable, the bracket 12 includes a base 121, threaded rod 123 and so on. The base 121 is arranged in the gap composed of the top of the two clamping plates 11, and the second end tube 122 and the first end tube 111 are arranged at the adjacent end of the base 121 and the clamping plate 11 respectively, the first end tube 111 and the second end tube 122 are set on the same shaft body, realizing the hinged connection of the clamping plate 11 and the base 121. The bottom of the threaded rod 123 is connected and inserted into the base 121 through the bearing. The inclined bracing plate 112 is arranged above each clamping plate 11, and the inner threaded tube 113 is arranged at the top of the two inclined bracing plates 112, which is threaded on the threaded rod 123. Under the action of rotating the threaded rod 123, the inner threaded tube 113 can be forced to rise and fall, adjusting the inclination angle of the inclined bracing plate 112, and then adjusting the opening angle of the two clamping plates 11, providing support for forcing the two clamping plates 11 to fasten set on the cable. In addition, an anti-skid layer can also be provided on the side wall of the clamping plate 11 in contact with the cable, increasing the resistance of the clamping plate 11 relative to the cable.

[0040] As Figure 3 shown, in order to facilitate the staff to rotate the threaded rod 123, the top surface of the threaded rod 123 is provided with a plug-in slot 124, and the top of the threaded rod 123 is provided with a top ball 125, and the bottom of the top ball 125 is fixedly provided with a plug-in column 126, the plug-in slot 124 and the plug-in column 126 are provided as a matched concave-convex structure, and the plug-in column 126 is inserted into the plug-in slot 124. Therefore, when the staff holds the top ball 125 and rotates, the threaded rod 123 rotates synchronously, that is, the position of the inner threaded tube 113 can be adjusted.

[0041] As Figure 3 shown, in order to stably install the top ball 125 on the threaded rod 123, a counterbore 127 is provided through the top ball 125 and the plug-in column 126, a bolt is provided through the counterbore 127, and the bottom of the bolt is threaded into the bottom of the plug-in slot 124.

[0042] As Figure 6 shown, in order to be able to stably install the guide rail 22 on the side of the bracket 12, the guide rail 22 includes a splicing plate 224, the side of the splicing plate 224 is fixedly provided with a fixed plate 222, and the side of the fixed plate 222 is connected and provided with a clamping arc plate 223 through a bolt. After the bracket 12 is stably installed on the cable, the fixed plate 222 and the clamping arc plate 223 are connected and set on the threaded rod 123 through a bolt, so that the splicing plate 224 is stably arranged on the side of the cable.

[0043] As Figure 6 , Figure 7As shown in the drawings, in order to be able to detect the temperature of multiple points in the circumferential direction of the cable by the temperature sensor 21, the temperature measuring assembly 2 further comprises a rack 23, and a guide plate 231 is fixedly arranged on the inner side of the rack 23. A guide groove 225 is arranged on the outer side wall of the splicing plate 224, and the end faces of the guide plate 231 and the rack 23 and the end face of the guide groove 225 are all arranged in a convex structure, so that the guide plate 231 is installed in the guide groove 225, and the rack 23 protrudes from the guide groove 225. Meanwhile, a support plate 24 is fixedly arranged on the side of the splicing plate 224, a motor 3 (which can be a stepping motor, a servo motor, a rudder motor, etc.) is arranged at the support plate 24, a gear 31 installed on the power output shaft of the motor 3 is connected in meshing with the rack 23, the motor 3 is connected with an electrical control box 4, and a motor driver is arranged in the electrical control box 4, so that the motor 3 can be controlled to work by the electrical control box 4, and the rack 23 is forced to move along the guide groove 225.

[0044] As shown in the drawings, Figure 7 In addition, a support plate 232 is fixedly arranged at the part of the rack 23 protruding from the guide groove 225, and the temperature sensor 21 is arranged to penetrate through the support plate 232. That is, the position of the temperature sensor 21 can be changed when the rack 23 moves, so as to facilitate temperature detection of different positions of the cable.

[0045] Embodiment two:

[0046] As shown in the drawings, Figures 5-7 Based on the embodiment 1, if it is desired to further increase the temperature detection points of the cable, two splicing plates 224 are arranged on the guide rail 22, and an ear plate 221 is fixedly arranged at the end of each splicing plate 224, so that the two splicing plates 224 form an annular structure distributed in an upper and lower manner and surround the outer side of the cable in cooperation with the bolt. Meanwhile, two racks 23 are arranged, and the two racks 23 are installed in the two guide grooves 225 in a head-to-tail manner, so that the circumferential movement of the two racks 23 can be controlled by the motor 3, the movement of the temperature sensor 21 with a larger distance is met, and the detection of multiple points of the cable can be realized.

[0047] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. It should be pointed out that, for ordinary skilled persons in the art, changes, modifications or additions can be made without departing from the concept of the present application, and all of them shall belong to the protection scope of the present application.

Claims

1. A wireless temperature measuring device for power cables, characterized by: The utility model provides a kind of cable clamp, including clamping component (1), the clamping component (1) includes support (12) and two symmetrical clamping plates (11), two the clamping plate (11) is installed in the bottom of support (12), the support (12) controls two clamping plates (11) clamping on cable;It further includes temperature measuring component (2), the temperature measuring component (2) includes temperature sensor (21), guide rail (22) and rack (23), the guide rail (22) is installed on support (12), the rack (23) is installed on guide rail (22), the temperature sensor (21) is installed in the side of rack (23), and the temperature sensor (21) is towards cable arrangement, motor (3) is installed in the side of the guide rail (22) and controls rack (23) to drive temperature sensor (21) to move.

2. A wireless temperature measuring device for power cables according to claim 1, characterized in that: The support (12) includes a base (121) disposed in a gap formed by the top portions of the two clamping plates (11), a second end tube (122) and a first end tube (111) are respectively disposed at the ends adjacent to the base (121) and the clamping plates (11), and the first end tube (111) and the second end tube (122) are sleeved on the same shaft body.

3. A wireless temperature measuring device for power cables according to claim 2, characterized in that: The support (12) further includes a threaded rod (123) having a bottom connected to the base (121) through a bearing, and an inner threaded tube (113) is hingedly disposed at the top of each of the two clamping plates (11), and the inner threaded tube (113) is threadedly sleeved on the threaded rod (123).

4. A wireless temperature measuring device for power cables according to claim 3, characterized in that: A top ball (125) is disposed at the top of the threaded rod (123), a plug-in column (126) is fixedly disposed at the bottom of the top ball (125), a counterbore (127) is through-disposed on the top ball (125) and the plug-in column (126), and a bolt is through-disposed at the counterbore (127).

5. A wireless temperature measuring device for power cables according to claim 4, characterized in that: An insertion slot (124) is disposed on the top surface of the threaded rod (123), the insertion slot (124) and the plug-in column (126) are provided as matching concave-convex structures, the plug-in column (126) is inserted into the insertion slot (124), and the bottom of the bolt is threadedly inserted into the bottom of the insertion slot (124).

6. A wireless temperature measuring device for power cables according to claim 3, characterized in that: The guide rail (22) includes a splicing plate (224), a fixed plate (222) is fixedly disposed at the side of the splicing plate (224), a clamping arc plate (223) is connected through a bolt at the side of the fixed plate (222), and the threaded rod (123) is through-disposed in the space formed by the clamping arc plate (223) and the fixed plate (222).

7. A wireless temperature measuring device for power cables according to claim 6, characterized in that: The rack (23) is also provided as one, a guide plate (231) is fixedly disposed on the inner side surface of the rack (23), a guide groove (225) is disposed on the outer side wall of the splicing plate (224), the end surface formed by the guide plate (231) and the rack (23) and the end surface of the guide groove (225) are provided as convex structures, the guide plate (231) is installed in the guide groove (225), and the rack (23) is protruded from the guide groove (225).

8. A wireless temperature measuring device for power cables according to claim 7, characterized in that: The rack (23) is fixedly provided with a support plate (232) at the part protruding from the guide groove (225), and the temperature sensor (21) is provided through the support plate (232); a support plate (24) is fixedly provided at the side of the splicing plate (224), the motor (3) is installed at the support plate (24), and a gear (31) installed on the power output shaft of the motor (3) is engaged with the rack (23).

9. A wireless temperature measuring device for power cables according to claim 8, characterized in that: Two splicing plates (224) are further provided, and the two splicing plates (224) are connected by the ear plates (221) and bolts at the ends and are distributed in an annular structure in an up-down manner; meanwhile, two racks (23) are further provided, and the two racks (23) are installed in the two guide grooves (225) in a head-to-tail manner.

10. A wireless temperature measuring device for power cables according to claim 1, characterized in that: In addition, an electrical control box (4) is further provided, the motor (3) and the temperature sensor (21) are connected with the electrical control box (4), and the electrical control box (4) is connected with a mobile power supply.

Images