Overhead line temperature measurement module and temperature measurement device suitable for bad weather

Abstract

The application relates to the technical field of overhead transmission line temperature measuring devices, in particular to an overhead line temperature measuring module suitable for severe weather, which comprises a data acquisition unit used for collecting ambient temperature and measuring the temperature of different positions of an overhead line; an overhead line sampling resistance comparison unit used for comparing the temperature values of different positions of the overhead line, determining the collection input voltage of a voltage comparator IC3 after the comparison, taking the ambient temperature as the input reference of the voltage comparator IC3, and finally controlling whether the temperature measuring module alarms through a communication control unit. The alarm threshold of the overhead line temperature overrun of the application can be self-adaptively adjusted along with the temperature change of the environment around the overhead line, the power consumption is low, and the practicability is high.

Description

Technical Field

[0001] This application relates to the technical field of temperature measurement equipment for overhead transmission lines, and in particular to a temperature measurement module and device for overhead transmission lines suitable for severe weather. Background Technology

[0002] The statements in this section are merely background information related to this application and do not necessarily constitute prior art.

[0003] Temperature acquisition of overhead lines has always been a significant challenge because it is highly susceptible to external environmental influences. Even if the overhead line itself does not experience overheating or temperature rise, changes in the external environment, such as a sudden drop or rise in temperature, will alter the temperature data collected by the overhead line. Therefore, mitigating the impact of external temperature variations on overhead line temperature acquisition is a technical problem that needs to be addressed in current technologies.

[0004] On the other hand, the existing technology for measuring the temperature of overhead lines is relatively simple. It is affected by the installation location of the temperature sensor, the installation environment, the specifications of the temperature sensor itself, and more importantly, the wind force and direction. The temperature values ​​measured at different locations of the overhead line will have deviations, and there will be errors if only the temperature of one place is collected.

[0005] Therefore, it is necessary to provide an overhead line temperature measurement module and device suitable for severe weather to solve the above-mentioned technical problems. Summary of the Invention

[0006] Based on this, and in response to the aforementioned technical problems, this application provides an overhead line temperature measurement module and device suitable for severe weather.

[0007] The technical solution adopted in this application to solve the problems existing in the prior art is:

[0008] This application proposes an overhead line temperature measurement module suitable for severe weather, comprising:

[0009] The data acquisition unit includes a thermistor RTO for acquiring ambient temperature and a first temperature acquisition group and a second temperature acquisition group for measuring the temperature at different locations on the overhead line. The first temperature acquisition group includes thermistors RT arranged in parallel. 11 and thermistor RT 12 The second temperature acquisition group includes thermistors RT arranged in parallel. 21 and thermistor RT 22 ;

[0010] The overhead line sampling resistor comparison unit is used to compare the thermistor RT 11The real-time voltage is fed into the non-inverting input of the first comparator IC1 and the inverting input of the second comparator IC2; used to convert the thermistor RT 21 The real-time voltage is fed into the inverting input of the first comparator IC1 and the non-inverting input of the second comparator IC2.

[0011] The comparator sampling unit is used to determine, based on the output signals of the first comparator IC1 and the second comparator IC2 of the overhead line sampling resistor comparison unit, whether the resistor is the thermistor RT. 12 Still a thermistor RT 22 The control input is fed to the inverting input terminal of the third comparator IC3 to acquire the input voltage;

[0012] A reference voltage providing unit is used to provide a reference input voltage to the non-inverting input terminal of voltage comparator IC3; the reference input voltage is controlled by the thermistor RT0.

[0013] The communication control unit includes a voltage comparator IC3, which receives the acquired input voltage and the reference input voltage and outputs a communication drive signal to control the power-on of the communication module; after the communication module is powered on, it sends the warning information to the background server.

[0014] The power supply module is used to supply power to the data acquisition unit, the overhead line sampling resistor comparison unit, the comparator sampling unit, the reference voltage supply unit, and the communication control unit.

[0015] Preferably, the overhead line sampling resistor comparison unit includes a first comparator IC1, a second comparator IC2, and resistors R0 and R1 with the same resistance value; one end of resistor R0 is connected to the inverting input terminal of the first comparator IC1, the non-inverting input terminal of the second comparator IC2, and the thermistor RT. 21 One end of the resistor R1 is connected to the non-inverting input of the first comparator IC1, the inverting input of the second comparator IC2, and the thermistor RT. 11 One end of resistor R0 and the other end of resistor R1 are connected to ground;

[0016] Thermistor RT 21 The other end, the thermistor RT 11 The other end of each is connected to the positive terminal V+ of the power supply;

[0017] The thermistor RT 11 Thermistor RT 21 All are positive temperature coefficient thermistors.

[0018] The first comparator IC1 and the second comparator IC2 are electrically connected to the power module.

[0019] Preferably, the comparator sampling unit includes transistors Q1 and Q2 and a thermistor RT.12 and thermistor RT 22 The base of transistor Q1 is connected to one end of resistor R2, and the other end of resistor R2 is connected to the output of the first comparator IC1.

[0020] The base of transistor Q2 is connected to one end of resistor R3, and the other end of resistor R3 is connected to the output of second comparator IC2.

[0021] The emitter of transistor Q1 and the thermistor RT 12 One end is connected to the thermistor RT 12 The other end is grounded; the emitter of the transistor Q2 is connected to the thermistor RT. 22 One end is connected to the thermistor RT 22 The other end is grounded;

[0022] The collectors of transistors Q1 and Q2 are both connected to the inverting input of voltage comparator IC3 and one end of resistor R4; the other end of resistor R4 is connected to the positive power supply V+.

[0023] The thermistor RT 12 Thermistor RT 22 All are positive temperature coefficient thermistors.

[0024] Preferably, the reference voltage providing unit includes a thermistor RT0, resistors R5 and R6; one end of the thermistor RT0 is grounded, and the other end is connected to one end of resistor R6; the other end of resistor R6 is connected to one end of resistor R5 and the non-inverting input terminal of voltage comparator IC3; the other end of resistor R5 is connected to the positive power supply V+.

[0025] The thermistor RT0 is a negative temperature coefficient thermistor.

[0026] Preferably, the communication control unit includes a voltage comparator IC3 and a transistor Q3; the input terminal of the voltage comparator IC3 is connected in series with a resistor R9 and then connected to the base of the transistor Q3.

[0027] A resistor R7 is connected in series between the non-inverting input terminal of the voltage comparator IC3 and the resistor R6.

[0028] A resistor R8 is connected in parallel between the non-inverting input terminal of voltage comparator IC3 and the base of transistor Q3;

[0029] The collector of transistor Q3 is connected to the positive terminal V+ of the power supply, and the emitter of transistor Q3 is electrically connected to the communication module.

[0030] An overhead line temperature measurement device suitable for severe weather, based on the aforementioned overhead line temperature measurement module suitable for severe weather, includes:

[0031] Insulation shells used for mounting on overhead power lines;

[0032] The first and second rubber plugs are detachably installed at both ends of the heat insulation shell;

[0033] The testing mechanism is located inside the insulation shell;

[0034] The control box is located outside the heat insulation shell;

[0035] Both the first and second temperature acquisition groups are located within the detection mechanism.

[0036] Preferably, the heat insulation shell includes a first heat insulation shell and a second heat insulation shell that are detachably connected;

[0037] A fixing ring is fixedly sleeved on the outside of one end of the first heat insulation shell; a first half-fixing ring is fixedly sleeved on the outside of the other end of the first heat insulation shell;

[0038] One end of the second heat insulation shell is provided with a second half-fixing ring that cooperates with the first half-fixing ring, and the other end is detachably connected to the fixing ring;

[0039] The fixed ring is provided with an annular inner connecting ring, which is fixedly connected to the end of the first heat insulation shell;

[0040] When the second heat insulation shell is installed into the fixing ring, the slide bar is exactly in the slide groove;

[0041] The inner connecting ring is provided with a plurality of first fixing threaded holes, and the end of the second heat insulation shell is provided with a second fixing threaded hole that mates with the first fixing threaded holes. When the second heat insulation shell is installed into the fixing ring, the two are fixed by mounting screws.

[0042] There are accommodating spaces between the first half-fixed ring and the second half-fixed ring, as well as in the middle of the fixed ring.

[0043] Preferably, the heat insulation shell includes a first heat insulation shell and a second heat insulation shell that are detachably connected to each other; both the first heat insulation shell and the second heat insulation shell include a half shell, and a semi-circular ring is fixedly connected to both sides of the half shell.

[0044] The first and second heat insulation shells are both fixedly provided with connecting plates at the half-shell ends. The connecting plates are provided with matching mounting holes. The first and second heat insulation shells are fixed by installing fixing bolts in the mounting holes.

[0045] An accommodating space is formed in the middle between the half shells of the first and second heat insulation shells.

[0046] Preferably, the portion of the first heat insulation shell that connects to the second heat insulation shell is provided with a sliding strip, and the second heat insulation shell is provided with a sliding groove that mates with the sliding strip;

[0047] The inner walls at both ends of the first heat insulation shell are provided with a first internal thread; the inner walls at both ends of the second heat insulation shell are provided with a second internal thread that mates with the first internal thread.

[0048] The two accommodating spaces are respectively equipped with a first rubber plug and a second rubber plug;

[0049] Both the first rubber plug and the second rubber plug include a plug body. One end of the plug body is provided with a mounting threaded ring that is threaded to the end of the heat insulation shell. A tubular channel for the passage of overhead lines is formed in the middle of the plug body and the mounting threaded ring. The first rubber plug and the second rubber plug have openings along the central axial direction of the tubular channel.

[0050] The testing mechanism includes a first testing mechanism and a second testing mechanism; the first testing mechanism and the second testing mechanism are respectively disposed on the inner walls of the first heat insulation shell and the second heat insulation shell;

[0051] Both the first and second heat insulation shells have sliding cavities. The bottom of each sliding cavity is fixedly connected to one end of a compression spring, and the other end of the compression spring is fixedly connected to one side of a heat-conducting plate. The heat-conducting plate has sliding plates around its perimeter, and the sliding plates are slidably connected to the inner wall of the sliding cavity.

[0052] The first and second temperature acquisition groups are respectively fixedly installed on the heat-conducting plates inside the first and second heat-insulating shells and located in the sliding cavity.

[0053] Preferably, both the first and second heat insulation shells have outlets at the bottom of the sliding cavity, and the outlets are used for the passage of the detection wire;

[0054] The detection line is used to connect the first temperature acquisition group and the second temperature acquisition group to the circuit board inside the control box;

[0055] The heat insulation shell is made of insulating and heat-insulating material;

[0056] The first and second rubber plugs are made of rubber;

[0057] The heat-conducting plate is made of a heat-conducting material with high thermal conductivity.

[0058] Compared with the prior art, the beneficial effects of this application are as follows:

[0059] 1. This system enables temperature data acquisition at multiple locations on an overhead power line. The thermistors used at the same location by the sampling resistor comparison unit and the comparator sampling unit are not the same; instead, they are two adjacent thermistors. The effect is that the thermistors used in the sampling resistor comparison unit and the comparator sampling unit are isolated. The thermistor in the sampling resistor comparison unit is only used for comparison, while the thermistor in the comparator sampling unit is only used to provide the inverting voltage of the voltage comparator IC3. At any given time, the thermistor RT... 12 and thermistor RT 22 With only one component powered on, this design reduces power consumption. Furthermore, by having the comparison of the sampling resistors performed by the first comparator IC1 and the second comparator IC2 instead of data processing by the processor, power consumption and cost are both reduced.

[0060] 2. The ambient temperature detected by the thermistor RT0 is added to the reference voltage supply unit of the voltage comparator IC3. This design ensures that the overhead line temperature measurement module of this application, which is suitable for severe weather, has an alarm threshold for the overhead line temperature exceeding the limit. This threshold is not a fixed value, but a value that changes with the ambient temperature. In other words, the alarm threshold for the overhead line temperature exceeding the limit can be adaptively adjusted according to the temperature change of the environment around the overhead line.

[0061] 3. The testing mechanism is designed to be located at both ends of the overhead line. The larger temperature at each end is used as the measurement point, resulting in more accurate and reliable measurement results. Furthermore, the design of the compression spring and heat-conducting plate within the testing mechanism ensures that the heat-conducting plate remains pressed against the overhead line under the pressure of the compression spring when the line sways, guaranteeing reliable measurement results. Both the first and second rubber plugs are made of rubber, an elastic material. This prevents rigid damage to the temperature measuring device when the overhead line sways, thus extending the device's lifespan. Attached Figure Description

[0062] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0063] Figure 1 This is a schematic diagram of the internal circuit of an overhead line temperature measurement module suitable for severe weather, as described in this application.

[0064] Figure 2 This is an exploded view of the overall structure of an overhead line temperature measuring device suitable for severe weather, as described in this application.

[0065] Figure 3 for Figure 2 This application includes an installation diagram of an overhead line temperature measuring device suitable for severe weather conditions.

[0066] Figure 4 This application presents a schematic diagram of the overall structure of the first heat insulation shell of an overhead line temperature measuring device suitable for severe weather.

[0067] Figure 5 for Figure 4 A schematic diagram of the overall structure of the first heat insulation shell from another angle.

[0068] Figure 6 for Figure 5 Enlarged view of a portion of region A in the middle.

[0069] Figure 7 This is a schematic diagram of the overall structure of the second heat insulation shell of an overhead line temperature measuring device suitable for severe weather, as described in this application.

[0070] Figure 8 for Figure 7 A schematic diagram of the overall structure of the second insulation shell from another angle.

[0071] Figure 9 for Figure 7 Schematic diagram of the internal cross-sectional structure of the second insulation shell

[0072] Figure 10 for Figure 9 Enlarged view of a portion of region B in the middle.

[0073] Figure 11 This is a schematic diagram of the overall structure of the rubber plug of an overhead line temperature measuring device suitable for severe weather, as described in this application.

[0074] Figure 12 This is a schematic diagram of the overall structure of the first heat insulation shell of a second embodiment of an overhead line temperature measuring device suitable for severe weather according to this application.

[0075] In the picture:

[0076] 1. Overhead line; 2. Heat insulation shell; 20. First heat insulation shell; 200. Second heat insulation shell; 3. First rubber plug; 4. Second rubber plug; 5. Control box; 51. Outlet; 52. Detection line; 6. Temperature measuring thermistor; 7. Sliding cavity; 8. Heat-conducting plate; 9. Slide plate; 10. Compression spring; 11. Overhead line sampling resistance comparison unit; 12. Comparator sampling unit; 13. Reference voltage providing unit; 21. Fixing ring; 22. First half-fixing ring; 220. Second half-fixing ring; 23. Inner connecting ring; 24. First internal thread; 240. Second internal thread; 25. First detection mechanism; 250. Second detection mechanism; 26. Sliding bar; 260. Sliding groove; 27. First fixed threaded hole; 270. Second fixed threaded hole; 28. Third fixed threaded hole; 29. ​​Accommodation space.

[0077] 300. Plug body; 301. Threaded ring installation; 302. Opening.

[0078] 400. Connecting plate; 401. Half shell; 402. Semi-circular ring. Detailed Implementation

[0079] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0080] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0081] In this disclosure, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements in this disclosure, and do not specifically refer to any component or element in this disclosure, nor should they be construed as limiting this disclosure.

[0082] This application provides an overhead line temperature measurement module suitable for severe weather conditions, with reference to... Figure 1 This application discloses an overhead line temperature measurement module suitable for severe weather, comprising:

[0083] The data acquisition unit includes a thermistor RTO for acquiring ambient temperature and a first temperature acquisition group and a second temperature acquisition group for measuring the temperature at different locations on the overhead line. The first temperature acquisition group includes thermistors RT arranged in parallel. 11 and thermistor RT 12 The second temperature acquisition group includes thermistors RT arranged in parallel. 21 and thermistor RT 22 ;refer to Figure 10 The temperature-sensing thermistor 6 in the figure consists of two thermistors set in parallel.

[0084] Overhead line sampling resistor comparison unit 11 is used to compare the thermistor RT 11 The real-time voltage is fed into the non-inverting input of the first comparator IC1 and the inverting input of the second comparator IC2; used to convert the thermistor RT 21 The real-time voltage is fed into the inverting input of the first comparator IC1 and the non-inverting input of the second comparator IC2.

[0085] Comparator sampling unit 12 is used to determine, based on the output signals of the first comparator IC1 and the second comparator IC2 of overhead line sampling resistor comparison unit 11, whether the resistor is a thermistor RT. 12 Still a thermistor RT 22 The control input is fed to the inverting input terminal of the third comparator IC3 to acquire the input voltage;

[0086] The reference voltage providing unit 13 is used to provide a reference input voltage to the non-inverting input terminal of the voltage comparator IC3; the reference input voltage is controlled by the thermistor RT0.

[0087] The communication control unit includes a voltage comparator IC3, which receives the acquired input voltage and the reference input voltage and outputs a communication drive signal to control the power-on of the communication module; after the communication module is powered on, it sends the warning information to the background server.

[0088] The power supply module supplies power to the data acquisition unit, the overhead line sampling resistor comparison unit 11, the comparator sampling unit 12, the reference voltage supply unit 13, and the communication control unit. The battery module uses a lithium battery. In some embodiments, the power is drawn from the overhead line 1 by a CT (current transformer), while in others, a solar panel is installed for power. These are common techniques used by those skilled in the art and will not be elaborated upon here.

[0089] In some embodiments, the overhead line sampling resistor comparison unit 11 includes a first comparator IC1, a second comparator IC2, and resistors R0 and R1 with the same resistance value; one end of resistor R0 is connected to the inverting input terminal of the first comparator IC1, the non-inverting input terminal of the second comparator IC2, and the thermistor RT. 21 One end of the resistor R1 is connected to the non-inverting input of the first comparator IC1, the inverting input of the second comparator IC2, and the thermistor RT. 11 One end of resistor R0 and the other end of resistor R1 are connected to ground;

[0090] Thermistor RT 21 The other end, the thermistor RT 11 The other end of each is connected to the positive terminal V+ of the power supply;

[0091] The thermistor RT 11 Thermistor RT 21 All are positive temperature coefficient thermistors.

[0092] The first comparator IC1 and the second comparator IC2 are electrically connected to the power module.

[0093] In some embodiments, the comparator sampling unit 12 includes transistors Q1 and Q2 and a thermistor RT. 12 and thermistor RT 22The base of transistor Q1 is connected to one end of resistor R2, and the other end of resistor R2 is connected to the output of the first comparator IC1.

[0094] The base of transistor Q2 is connected to one end of resistor R3, and the other end of resistor R3 is connected to the output of second comparator IC2.

[0095] The emitter of transistor Q1 and the thermistor RT 12 One end is connected to the thermistor RT 12 The other end is grounded; the emitter of the transistor Q2 is connected to the thermistor RT. 22 One end is connected to the thermistor RT 22 The other end is grounded;

[0096] The collectors of transistors Q1 and Q2 are both connected to the inverting input of voltage comparator IC3 and one end of resistor R4; the other end of resistor R4 is connected to the positive power supply V+.

[0097] The thermistor RT 12 Thermistor RT 22 All are positive temperature coefficient thermistors.

[0098] In some embodiments, the reference voltage providing unit 13 includes a thermistor RT0, a resistor R5, and a resistor R6; one end of the thermistor RT0 is grounded, and the other end is connected to one end of the resistor R6; the other end of the resistor R6 is connected to one end of the resistor R5 and the non-inverting input of the voltage comparator IC3; the other end of the resistor R5 is connected to the positive power supply V+.

[0099] The thermistor RT0 is a negative temperature coefficient thermistor.

[0100] In some embodiments, the communication control unit includes a voltage comparator IC3 and a transistor Q3; the input terminal of the voltage comparator IC3 is connected in series with a resistor R9 and then connected to the base of the transistor Q3.

[0101] A resistor R7 is connected in series between the non-inverting input terminal of the voltage comparator IC3 and the resistor R6.

[0102] A resistor R8 is connected in parallel between the non-inverting input terminal of voltage comparator IC3 and the base of transistor Q3;

[0103] The collector of transistor Q3 is connected to the positive terminal V+ of the power supply, and the emitter of transistor Q3 is electrically connected to the communication module.

[0104] The working principle of the overhead line temperature measurement module for severe weather provided in this application is as follows:

[0105] refer to Figure 1 Thermistor RT 21 and thermistor RT 11 Simultaneously, temperature detection is performed on overhead line 1, and the non-inverting and inverting input terminals of the first comparator IC1 simultaneously acquire the temperature data from the thermistor RT. 21 and thermistor RT 11 The voltage when RT 11 High detected temperature, RT 11 The increased resistance causes the voltage at the non-inverting input of the first comparator IC1 to be higher than the voltage at its inverting input, and the first comparator IC1 outputs voltage V+. At this time, since the voltage at the non-inverting input of the second comparator IC2 is lower than the voltage at its inverting input, the second comparator IC2 will not output voltage. The transistor Q1 in the comparator sampling unit 12 in the figure will then conduct, providing the inverting input voltage to the voltage comparator IC3.

[0106] Meanwhile, the input voltage at the non-inverting input of voltage comparator IC3 is controlled by thermistor RT0. Thermistor RT0 collects the ambient temperature in real time. When the ambient temperature decreases, the resistance of thermistor RT0 increases, which is reflected in... Figure 1 In this case, the reference input voltage at the non-inverting input terminal of voltage comparator IC3 decreases. That is, only when the temperature of overhead line 1 is lower, and the sampling input voltage at the inverting input terminal of voltage comparator IC3 is lower, will voltage comparator IC3 output a signal. In other words, when the external ambient temperature decreases, the alarm temperature of overhead line 1 designed by the temperature measurement module of this application will also decrease; when the external ambient temperature increases, the alarm temperature of overhead line 1 designed by the temperature measurement module of this application will also increase.

[0107] This is because changes in the external environment have a certain impact on the temperature of overhead line 1 itself. Using a fixed alarm threshold for overhead line temperature exceeding the limit is not suitable for the needs of monitoring the temperature of overhead line 1 in harsh environments.

[0108] refer to Figure 2 as well as Figure 3 This application also provides an overhead line temperature measuring device suitable for severe weather. Except for the first and second temperature acquisition groups, the remaining parts of the temperature measuring module are all installed inside the control box 5 of the temperature measuring device. This overhead line temperature measuring device suitable for severe weather includes:

[0109] The heat insulation shell 2 is used to mount the overhead line 1; the first rubber plug 3 and the second rubber plug 4 are detachably set at both ends of the heat insulation shell 2; the detection mechanism is set inside the heat insulation shell 2; the control box 5 is set outside the heat insulation shell 2; the first temperature acquisition group and the second temperature acquisition group are both set inside the detection mechanism.

[0110] The applicable scenario for this embodiment is: during the construction and installation of overhead line 1, the temperature measuring module of this application is simultaneously installed at a suitable position on overhead line 1.

[0111] Specifically, refer to Figure 4 , Figure 5 , Figure 7 and Figure 8 The heat insulation shell 2 includes a first heat insulation shell 20 and a second heat insulation shell 200 that are detachably connected. A fixing ring 21 is fixedly sleeved on the outside of one end of the first heat insulation shell 20; a first half-fixing ring 22 is sleeved on the outside of the other end of the first heat insulation shell 20; a second half-fixing ring 220 that mates with the first half-fixing ring 22 is provided at one end of the second heat insulation shell 200, and the other end is detachably connected to the fixing ring 21; a sliding strip 26 is provided on the part of the first heat insulation shell 20 that connects to the second heat insulation shell 200, and a sliding groove 260 that mates with the sliding strip 26 is provided on the second heat insulation shell 200; an annular inner connecting ring 23 is fixedly provided inside the fixing ring 21, and the inner connecting ring 23 is fixedly connected to the end of the first heat insulation shell 20; both ends of the first heat insulation shell 20 have inner walls provided with… The first internal thread 24 is provided; the inner walls of both ends of the second heat insulation shell 200 are provided with second internal threads 240 that mate with the first internal thread 24; when the second heat insulation shell 200 is installed into the fixing ring 21, the slide bar 26 is exactly in the slide groove 260; the inner connecting ring 23 is provided with a plurality of first fixing thread holes 27, and the end of the second heat insulation shell 200 is provided with second fixing thread holes 270 that mate with the first fixing thread holes 27; when the second heat insulation shell 200 is installed into the fixing ring 21, the two are fixed by mounting screws; a receiving space 29 is formed between the first half-fixing ring 22 and the second half-fixing ring 220, and in the middle of the fixing ring 21; a first rubber plug 3 and a second rubber plug 4 are respectively provided in the two receiving spaces 29.

[0112] refer to Figure 11 The first rubber plug 3 and the second rubber plug 4 both include a plug body 300. One end of the plug body 300 is provided with a mounting thread ring 301 that is threaded to the end of the heat insulation shell 2. A tubular channel for the overhead line 1 to pass through is formed in the middle of the plug body 300 and the mounting thread ring 301. An opening 302 is formed in the first rubber plug 3 and the second rubber plug 4 along the central axial direction of the tubular channel.

[0113] refer to Figure 9 as well as Figure 10The detection mechanism includes a first detection mechanism 25 and a second detection mechanism 250; the first detection mechanism 25 and the second detection mechanism 250 are respectively disposed on the inner walls of the first heat insulation shell 20 and the second heat insulation shell 200; a sliding cavity 7 is provided on the first heat insulation shell 20 and the second heat insulation shell 200, and the bottom of the sliding cavity 7 is fixedly connected to one end of the compression spring 10, and the other end of the compression spring 10 is fixedly connected to one side of the heat conducting plate 8; a sliding plate 9 is provided around the heat conducting plate 8, and the sliding plate 9 is slidably connected to the inner wall of the sliding cavity 7; a first temperature acquisition group and a second temperature acquisition group are respectively fixedly disposed on the heat conducting plate 8 inside the first heat insulation shell 20 and the second heat insulation shell 200, located inside the sliding cavity 7.

[0114] refer to Figure 6 Both the first heat insulation shell 20 and the second heat insulation shell 200 have a cable outlet 51 at the bottom of the sliding cavity 7. The cable outlet 51 is used to pass through the detection line 52. The detection line 52 is used to connect the first temperature acquisition group and the second temperature acquisition group to the circuit board inside the control box 5.

[0115] In this embodiment, the heat insulation shell 2 is made of insulating and heat-insulating material; the first rubber plug 3 and the second rubber plug 4 are made of rubber; and the heat-conducting plate 8 is made of a heat-conducting material with strong thermal conductivity and a high thermal conductivity coefficient.

[0116] In this embodiment, the overhead line temperature measurement module suitable for severe weather should be installed with reference to... Figure 3 , Figure 4 and Figure 7 ,

[0117] First, separate the first heat insulation shell 20 from the second heat insulation shell 200; then, during the construction of the overhead line 1, first, fit the fixing ring 21 onto the overhead line 1, that is, place the first heat insulation shell 20 onto the overhead line 1, and then install the second heat insulation shell 200; tighten all the mounting screws; refer to Figure 11 Finally, install the first rubber plug 3 and the second rubber plug 4. When installing the rubber plugs, since rubber itself is elastic, align the opening 302 in the figure with the overhead line 1, put the first rubber plug 3 and the second rubber plug 4 on the overhead line 1 respectively, and then rotate them into the receiving space 29 and tighten them. Finally, tighten the screw in the third fixing threaded hole 28 to fix it.

[0118] In some embodiments, thermally conductive silicone grease is filled inside the heat insulation shell 2 between the first rubber plug 3 and the second rubber plug 4. The function of the thermally conductive silicone grease is to make the temperature measurement of the overhead line 1 by the heat-conducting plate 8 more accurate. Because the overhead line 1 may sway in harsh environments such as windy weather, friction and gaps may exist between the heat-conducting plate 8 and the overhead line 1, affecting the temperature measurement. Filling with thermally conductive silicone grease overcomes this defect. On the other hand, thermally conductive silicone grease is a paste-like thermal interface material and will not affect the function of the compression spring 10.

[0119] This application also provides a second preferred embodiment, see reference. Figure 12 Unlike the first embodiment, this embodiment is applicable to situations where, after the overhead line 1 has been constructed and installed, it is necessary to add temperature measuring points and install temperature measuring modules on the overhead line 1. (Refer to...) Figure 12 In the second embodiment, unlike the first embodiment, both the first heat insulation shell 20 and the second heat insulation shell 200 include a half-shell 401, with semi-circular rings 402 fixedly connected to both sides of the half-shell 401. A connecting plate 400 is fixedly provided at the end of each half-shell 401 of the first heat insulation shell 20 and the second heat insulation shell 200. The connecting plate 400 has mating mounting holes, and fixing bolts are installed in these mounting holes to secure the first heat insulation shell 20 and the second heat insulation shell 200. A receiving space 29 is formed in the middle between each pair of half-shells 401 of the first heat insulation shell 20 and the second heat insulation shell 200. The remaining parts are completely the same as in the first embodiment and will not be described in detail here.

[0120] In the second embodiment, when installing the overhead line temperature measurement module suitable for severe weather, the first heat insulation shell 20 and the second heat insulation shell 200 are placed on both sides of the overhead line 1, the slide groove 260 is aligned with the slide bar 26 and installed, and finally the fixing bolts are installed; finally, the first rubber plug 3 and the second rubber plug 4 are installed according to the installation method of the first embodiment.

[0121] The overhead line temperature measuring device of this application, applicable to severe weather, has a detection mechanism designed at both ends of the overhead line 1. The larger temperature at each end is used as the measurement point, resulting in more accurate and reliable measurement results. Furthermore, the design of the compression spring 10 and heat-conducting plate 8 within the detection mechanism ensures that the heat-conducting plate 8 remains pressed against the overhead line 1 under the pressure of the compression spring 10 when the overhead line 1 is shaken, guaranteeing reliable measurement results. Finally, the first rubber plug 3 and the second rubber plug 4 of this application are both made of rubber, an elastic material, preventing rigid damage to the temperature measuring device when the overhead line 1 shakes.

[0122] The overhead line temperature measurement module and device applicable to severe weather described in this application can collect temperature data at multiple locations on the overhead line 1. Furthermore, the thermistors used at the same location by the overhead line sampling resistor comparison unit 11 and the comparator sampling unit 12 are not the same, but two adjacent thermistors. This effectively isolates the thermistor used in the sampling resistor comparison unit from the thermistor used in the comparator sampling unit. The thermistor in the sampling resistor comparison unit is only used for comparison, while the thermistor in the comparator sampling unit is only used to provide the inverting voltage of the voltage comparator IC3. At the same time, the thermistor RT... 12 and thermistor RT 22 With only one component powered on, this design reduces power consumption. Furthermore, by having the comparison of the sampling resistors performed by the first comparator IC1 and the second comparator IC2 instead of data processing by the processor, both power consumption and cost are reduced. On the other hand, by adding the ambient temperature detected by the thermistor RT0 to the reference voltage supply unit 13 of the voltage comparator IC3, this design ensures that the overhead line temperature measurement module of this application, suitable for severe weather, does not have a fixed alarm threshold for over-limit overhead line temperature, but rather a value that changes with the ambient temperature. In other words, the alarm threshold for over-limit overhead line temperature can adaptively adjust to changes in the temperature of the environment surrounding the overhead line.

[0123] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0124] While the specific embodiments of this application have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this application. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this application are still within the scope of protection of this application.

Claims

1. An overhead line temperature measurement module suitable for severe weather, characterized in that: include: The data acquisition unit includes a thermistor RTO for acquiring ambient temperature and a first temperature acquisition group and a second temperature acquisition group for measuring the temperature at different locations on the overhead line. The first temperature acquisition group includes thermistors RT arranged in parallel. 11 and thermistor RT 12 The second temperature acquisition group includes thermistors RT arranged in parallel. 21 and thermistor RT 22 ; The overhead line sampling resistor comparison unit (11) is used to compare the thermistor RT 11 The real-time voltage is fed into the non-inverting input of the first comparator IC1 and the inverting input of the second comparator IC2; used to convert the thermistor RT 21 The real-time voltage is fed into the inverting input of the first comparator IC1 and the non-inverting input of the second comparator IC2; The comparator sampling unit (12) is used to determine, based on the output signals of the first comparator IC1 and the second comparator IC2 of the overhead line sampling resistor comparison unit (11), whether the resistor is a thermistor RT. 12 Still a thermistor RT 22 The control input is fed to the inverting input terminal of the third comparator IC3 to acquire the input voltage; The reference voltage providing unit (13) is used to provide a reference input voltage to the non-inverting input terminal of the voltage comparator IC3; the reference input voltage is controlled by the thermistor RT0; The communication control unit includes a voltage comparator IC3, which is used to receive the acquired input voltage and the reference input voltage and output a communication drive signal to control the power supply of the communication module; The communication module sends the warning information to the backend server after being powered on; The power supply module is used to supply power to the data acquisition unit, the overhead line sampling resistor comparison unit (11), the comparator sampling unit (12), the reference voltage supply unit (13), and the communication control unit.

2. The overhead line temperature measurement module suitable for severe weather as described in claim 1, characterized in that: The overhead line sampling resistor comparison unit (11) includes a first comparator IC1, a second comparator IC2, and resistors R0 and R1 with the same resistance value; one end of resistor R0 is connected to the inverting input terminal of the first comparator IC1, the non-inverting input terminal of the second comparator IC2, and the thermistor RT. 21 One end of the resistor R1 is connected to the non-inverting input of the first comparator IC1, the inverting input of the second comparator IC2, and the thermistor RT. 11 One end of resistor R0 and the other end of resistor R1 are connected to ground; Thermistor RT 21 The other end, the thermistor RT 11 The other end of each is connected to the positive terminal V+ of the power supply; The thermistor RT 11 Thermistor RT 21 All are positive temperature coefficient thermistors; The first comparator IC1 and the second comparator IC2 are electrically connected to the power module.

3. The overhead line temperature measurement module suitable for severe weather as described in claim 1, characterized in that: The comparator sampling unit (12) includes transistors Q1 and Q2 and a thermistor RT. 12 and thermistor RT 22 The base of transistor Q1 is connected to one end of resistor R2, and the other end of resistor R2 is connected to the output of the first comparator IC1. The base of transistor Q2 is connected to one end of resistor R3, and the other end of resistor R3 is connected to the output of second comparator IC2. The emitter of transistor Q1 and the thermistor RT 12 One end is connected to the thermistor RT 12 The other end is grounded; the emitter of the transistor Q2 is connected to the thermistor RT. 22 One end is connected to the thermistor RT 22 The other end is grounded; The collectors of transistors Q1 and Q2 are both connected to the inverting input of voltage comparator IC3 and one end of resistor R4; the other end of resistor R4 is connected to the positive power supply V+. The thermistor RT 12 Thermistor RT 22 All are positive temperature coefficient thermistors.

4. The overhead line temperature measurement module suitable for severe weather as described in claim 1, characterized in that: The reference voltage providing unit (13) includes a thermistor RT0, a resistor R5, and a resistor R6; one end of the thermistor RT0 is grounded, and the other end is connected to one end of the resistor R6; the other end of the resistor R6 is connected to one end of the resistor R5 and the non-inverting input of the voltage comparator IC3; the other end of the resistor R5 is connected to the positive power supply V+. The thermistor RT0 is a negative temperature coefficient thermistor.

5. The overhead line temperature measurement module suitable for severe weather as described in claim 1, characterized in that: The communication control unit includes a voltage comparator IC3 and a transistor Q3; the input terminal of the voltage comparator IC3 is connected in series with a resistor R9 and then connected to the base of the transistor Q3. A resistor R7 is connected in series between the non-inverting input terminal of the voltage comparator IC3 and the resistor R6. A resistor R8 is connected in parallel between the non-inverting input terminal of voltage comparator IC3 and the base of transistor Q3; The collector of transistor Q3 is connected to the positive terminal V+ of the power supply, and the emitter of transistor Q3 is electrically connected to the communication module.

6. An overhead line temperature measuring device suitable for severe weather, based on the overhead line temperature measuring module suitable for severe weather as described in any one of claims 1-5, characterized in that: include: Insulation shell (2) for mounting on overhead line (1); The first rubber plug (3) and the second rubber plug (4) are detachably installed at both ends of the heat insulation shell (2); The detection mechanism is installed inside the heat insulation shell (2); The control box (5) is located outside the heat insulation shell (2); Both the first and second temperature acquisition groups are located within the detection mechanism.

7. The overhead line temperature measuring device suitable for severe weather as described in claim 6, characterized in that: The heat insulation shell (2) includes a first heat insulation shell (20) and a second heat insulation shell (200) that are detachably connected. A fixing ring (21) is fixedly sleeved on one end of the first heat insulation shell (20); a first half fixing ring (22) is sleeved on the other end of the first heat insulation shell (20). One end of the second heat insulation shell (200) is provided with a second half-fixing ring (220) that cooperates with the first half-fixing ring (22), and the other end is detachably connected to the fixing ring (21); The fixing ring (21) is fixedly provided with an annular inner connecting ring (23), and the inner connecting ring (23) is fixedly connected to the end of the first heat insulation shell (20); When the second heat insulation shell (200) is installed into the fixing ring (21), the slide bar (26) is exactly in the slide groove (260); The inner connecting ring (23) is provided with a plurality of first fixing threaded holes (27), and the end of the second heat insulation shell (200) is provided with a second fixing threaded hole (270) that mates with the first fixing threaded holes (27). When the second heat insulation shell (200) is installed into the fixing ring (21), the two are fixed by the installation screws. A receiving space (29) is formed between the first half-fixed ring (22) and the second half-fixed ring (220), as well as in the middle of the fixed ring (21).

8. The overhead line temperature measuring device suitable for severe weather according to claim 6, characterized in that: The heat insulation shell (2) includes a first heat insulation shell (20) and a second heat insulation shell (200) that are detachably connected to each other; both the first heat insulation shell (20) and the second heat insulation shell (200) include a half shell (401), and a semi-circular ring (402) is fixedly connected to both sides of the half shell (401). The first heat insulation shell (20) and the second heat insulation shell (200) are both fixedly provided with connecting plates (400) at the ends of the half shells (401). The connecting plates (400) are provided with matching mounting holes. The first heat insulation shell (20) and the second heat insulation shell (200) are fixed by installing fixing bolts in the mounting holes. A receiving space (29) is formed in the middle between the half shells (401) of the first heat insulation shell (20) and the second heat insulation shell (200).

9. The overhead line temperature measuring device suitable for severe weather according to claim 7, characterized in that: The first heat insulation shell (20) is provided with a slide bar (26) at the part where it connects with the second heat insulation shell (200), and the second heat insulation shell (200) is provided with a slide groove (260) that cooperates with the slide bar (26). The inner walls at both ends of the first heat insulation shell (20) are provided with a first internal thread (24); the inner walls at both ends of the second heat insulation shell (200) are provided with a second internal thread (240) that mates with the first internal thread (24). The two accommodating spaces (29) are respectively provided with a first rubber plug (3) and a second rubber plug (4); The first rubber plug (3) and the second rubber plug (4) both include a plug body (300). One end of the plug body (300) is provided with a mounting thread ring (301) that is threaded to the end of the heat insulation shell (2). A tubular channel for the overhead line (1) is formed in the middle of the plug body (300) and the mounting thread ring (301). The first rubber plug (3) and the second rubber plug (4) have an opening (302) along the central axial direction of the tubular channel. The testing mechanism includes a first testing mechanism (25) and a second testing mechanism (250); the first testing mechanism (25) and the second testing mechanism (250) are respectively disposed on the inner walls of the first heat insulation shell (20) and the second heat insulation shell (200); The first heat insulation shell (20) and the second heat insulation shell (200) are both provided with sliding cavities (7). The bottom of each sliding cavity (7) is fixedly connected to one end of a compression spring (10), and the other end of the compression spring (10) is fixedly connected to one side of a heat-conducting plate (8). The heat-conducting plate (8) is provided with sliding plates (9) around its perimeter, and the sliding plates (9) are slidably connected to the inner wall of the sliding cavity (7). The first temperature acquisition group and the second temperature acquisition group are respectively fixed on the heat-conducting plate (8) inside the first heat insulation shell (20) and the second heat insulation shell (200) located in the sliding cavity (7).

10. The overhead line temperature measuring device suitable for severe weather according to claim 9, characterized in that: Both the first heat insulation shell (20) and the second heat insulation shell (200) have a wire outlet (51) at the bottom of the sliding cavity (7), and the wire outlet (51) is used to pass the detection line (52); The detection line (52) is used to connect the first temperature acquisition group and the second temperature acquisition group to the circuit board inside the control box (5); The heat insulation shell (2) is made of insulating and heat-insulating material; The first rubber plug (3) and the second rubber plug (4) are made of rubber; The heat-conducting plate (8) is made of a heat-conducting material.

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