Overhead line temperature measuring module and temperature measuring device suitable for severe weather

Abstract

The invention relates to the technical field of overhead transmission line temperature measurement equipment, in particular to an overhead line temperature measurement module suitable for severe weather, which comprises a data acquisition unit used for acquiring environment temperature and measuring temperature of different positions of an overhead line; the overhead line sampling resistance comparison unit is used for comparing the temperature values of different positions of the overhead line and then determining the acquisition input voltage input to the voltage comparator IC3 by the comparator sampling unit; on the other hand, the environment temperature is used as the input reference of the voltage comparator IC3; and finally, the communication control unit controls the temperature measurement module to give an alarm. The overhead line temperature out-of-limit alarm threshold value can be adaptively adjusted along with the temperature change of the surrounding environment of the overhead line, the power consumption is low, and the practicability is high.

Description

Technical Field

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

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

[0003] Temperature collection of overhead lines has always been a big problem, because the temperature collection of overhead lines is very susceptible to the influence of the external environment. Even if the overhead lines do not have the problem of overheating or temperature rise, when the temperature in the external environment changes, such as a sudden drop or rise in temperature, the temperature collected by the overhead lines will also change. How to reduce the impact of changes in the external environment temperature on the temperature collection of overhead lines is a technical problem that needs to be overcome in the existing technology.

[0004] On the other hand, the existing method for measuring the temperature of overhead lines is relatively simple, which is affected by the installation position, installation environment, and specifications of the temperature sensor itself, and more importantly, by the wind force and direction. The temperature values ​​measured at different positions of the overhead line are biased, and there will be errors in collecting the temperature at only one place.

[0005] In view of this, it is necessary to provide an overhead line temperature measurement module and a temperature measurement device suitable for severe weather to solve the above technical problems. Summary of the invention

[0006] Based on this, in order to solve the above technical problems, the present application provides an overhead line temperature measurement module and a temperature measurement device suitable for severe weather.

[0007] The technical solution adopted by 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 RT0 for collecting ambient temperature and a first temperature acquisition group and a second temperature acquisition group for measuring the temperature at different positions of the overhead line. The first temperature acquisition group includes the thermistors RT 11 and thermistor RT 12 The second temperature acquisition group includes thermistors RT arranged in parallel 21 and thermistor RT 22 ;

[0010] Overhead line sampling resistance comparison unit is used to compare thermistor RT 11The real-time voltage of the thermistor RT is fed into the non-inverting input of the first comparator IC1 and the inverting input of the second comparator IC2; 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 whether the over-the-air line sampling resistor comparison unit is a thermal resistor RT according to the output signals of the first comparator IC1 and the second comparator IC2. 12 Or thermistor RT 22 Control the collected input voltage input to the inverting input terminal of the third comparator IC3;

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

[0013] The communication control unit includes a voltage comparator IC3, which is used to receive the collected input voltage and the reference input voltage and output the communication drive signal to control the communication module to be powered on; after the communication module is powered on, the warning information is sent to the background server;

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

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

[0016] Thermistor RT 21 The other end of the thermistor RT 11 The other end is connected to the positive pole 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 a transistor Q1, a transistor Q2 and a thermistor RT12 and thermistor RT 22 The base of the transistor Q1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the output end of the first comparator IC1;

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

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

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

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

[0024] Preferably, the reference voltage providing unit comprises 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, and the other end of the resistor R6 is connected to one end of the resistor R5 and the non-inverting input end of the voltage comparator IC3; the other end of the resistor R5 is connected to the positive electrode V+ of the power supply;

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

[0026] Preferably, the communication control unit comprises a voltage comparator IC3 and a transistor Q3; the input end 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 the voltage comparator IC3 and the base of the transistor Q3;

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

[0030] The overhead line temperature measuring device suitable for severe weather is based on the above-mentioned overhead line temperature measuring module suitable for severe weather, and includes:

[0031] Thermal insulation shell for installation on overhead lines;

[0032] A first rubber plug and a second rubber plug detachably arranged at both ends of the heat insulation shell;

[0033] A detection mechanism disposed inside the heat-insulating shell;

[0034] A control box disposed outside the heat-insulating shell;

[0035] The first temperature collection group and the second temperature collection group are both arranged in the detection mechanism.

[0036] Preferably, the heat-insulating shell comprises a first heat-insulating shell and a second heat-insulating shell that are detachably connected;

[0037] One end of the first heat-insulating shell is externally sleeved with a fixing ring; the other end of the first heat-insulating shell is externally sleeved with a first half fixing ring;

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

[0039] An annular inner connecting ring is fixedly provided inside the fixing ring, and the inner connecting ring is fixedly connected to the end of the first heat-insulating shell;

[0040] When the second heat-insulating shell is installed in the fixing ring, the slide bar is just 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-insulating shell is provided with second fixing threaded holes matching with the first fixing threaded holes. When the second heat-insulating shell is installed in the fixing ring, the two are fixed by installing screws;

[0042] An accommodating space is formed between the first half fixing ring, the second half fixing ring, and in the middle of the fixing ring.

[0043] Preferably, the heat-insulating shell comprises a first heat-insulating shell and a second heat-insulating shell which are mutually matched and detachably connected; the first heat-insulating shell and the second heat-insulating shell each comprise a half shell, and both sides of the half shell are fixedly connected with a semicircular ring;

[0044] The ends of the half shells of the first heat-insulating shell and the second heat-insulating shell are both fixed with connecting plates, and the connecting plates are provided with matching mounting holes, and the first heat-insulating shell and the second heat-insulating shell 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 heat-insulating shell and the second heat-insulating shell.

[0046] Preferably, a sliding bar is provided at a portion of the first heat-insulating shell that is connected to the second heat-insulating shell, and a sliding groove that cooperates with the sliding bar is provided on the second heat-insulating shell;

[0047] The inner walls at both ends of the first heat-insulating shell are provided with first internal threads; the inner walls at both ends of the second heat-insulating shell are provided with second internal threads matching the first internal threads;

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

[0049] The first rubber plug and the second rubber plug both include a plug body, one end of the plug body is provided with a mounting thread ring threadedly connected to the end of the insulation shell, and a tubular passage for passing the overhead line is formed in the middle of the plug body and the mounting thread ring; the first rubber plug and the second rubber plug are formed with an opening along the central axial direction of the tubular passage.

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

[0051] The first heat-insulating shell and the second heat-insulating shell are both provided with a sliding cavity, the bottom of the 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 the heat-conducting plate; a sliding plate is provided around the heat-conducting plate, and the sliding plate is slidably connected to the inner wall of the sliding cavity;

[0052] A first temperature collection group and a second temperature collection group are fixedly disposed on the heat conducting plates in the first heat insulating shell and the second heat insulating shell and located in the sliding cavity.

[0053] Preferably, the first heat-insulating shell and the second heat-insulating shell are both provided with a wire outlet at the bottom of the sliding cavity, and the wire outlet is used for passing 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 in the control box;

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

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

[0057] The heat conducting plate is made of a heat conducting material with strong heat conducting capacity.

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

[0059] 1. Temperature collection is realized at multiple locations of overhead lines. The thermistor used by the overhead line sampling resistor comparison unit and the comparator sampling unit at the same location is not the same, but two adjacent thermistors. The effect is: the thermistor of the sampling resistor comparison unit is isolated from the thermistor used by the comparator sampling unit. The thermistor of the sampling resistor comparison unit is only used for comparison. The thermistor of the comparator sampling unit is only used to provide the reverse voltage of the voltage comparator IC3. At the same time, the thermistor RT 12 and thermistor RT 22 Only one is powered on. This design reduces power consumption on the one hand. On the other hand, the comparison of the sampling resistors is completed by the first comparator IC1 and the second comparator IC2 instead of data processing by the processor, which reduces power consumption and cost at the same time.

[0060] 2. The ambient temperature detected by the thermistor RT0 is added to the reference voltage providing unit of the voltage comparator IC3. This design ensures that the overhead line temperature measurement module of the present application is suitable for severe weather. The alarm threshold of the overhead line temperature exceeding the limit is not a fixed value, but a value that changes with the ambient temperature. That is, the alarm threshold of the overhead line temperature exceeding the limit can be adaptively adjusted as the temperature of the environment around the overhead line changes.

[0061] 3. The detection mechanism is designed to be set at both ends of the overhead line. The larger temperature at both ends of the overhead line is taken as the measuring point, and the measurement result is more accurate and reliable. On the other hand, the design of the compression spring and the heat conduction plate in the detection mechanism ensures that when the overhead line is shaking, the heat conduction plate is always against the overhead line under the pressure of the compression spring, and the measurement effect is reliable. The first rubber plug and the second rubber plug are both made of rubber, which is an elastic material. In this way, the overhead line will not cause rigid damage to the temperature measuring device of the present application when it is shaking, thereby increasing the service life of the temperature measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

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

[0065] Figure 3 for Figure 2 The installation diagram of an overhead line temperature measuring device suitable for severe weather in the present application is shown in FIG.

[0066] Figure 4 A schematic diagram of the overall structure of the first heat-insulating shell of an overhead line temperature measuring device suitable for use in severe weather according to the present application,

[0067] Figure 5 for Figure 4 Schematic diagram of the overall structure of the first heat insulation shell from another angle,

[0068] Figure 6 for Figure 5 A partial enlarged view of area 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 in this application.

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

[0071] Fig. 9 for Figure 7 Schematic diagram of the internal cross-section structure of the second thermal insulation shell

[0072] Fig.10 for Fig. 9 A partial enlarged view of area B in the middle.

[0073] Fig.11 This is a schematic diagram of the overall structure of a rubber plug for an overhead line temperature measuring device suitable for use in severe weather in this application. Fig.12 This is a schematic diagram of the overall structure of the first thermal insulation shell of the second embodiment of the overhead line temperature measuring device suitable for severe weather in the present application.

[0074] In the figure:

[0075] 1. Overhead line, 2. Insulation shell, 20. First insulation shell, 200. Second 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 resistor comparison unit, 12. Comparator sampling unit, 13. Reference voltage providing unit, 21. Fixed ring, 22. First half fixed ring, 220. Second half fixed 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. Accommodating space,

[0076] 300, plug body, 301, mounting thread ring, 302, opening,

[0077] 400. Connecting plate. 401. Half shell. 402. Semicircular ring. DETAILED DESCRIPTION

[0078] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0079] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0080] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present disclosure, and do not specifically refer to any part or element in the present disclosure and should not be understood as limitations on the present disclosure.

[0081] This application provides an overhead line temperature measurement module suitable for severe weather. Figure 1 , an overhead line temperature measurement module suitable for severe weather of the present application comprises:

[0082] The data acquisition unit includes a thermistor RT0 for collecting ambient temperature and a first temperature acquisition group and a second temperature acquisition group for measuring the temperature at different positions of the overhead line. The first temperature acquisition group includes the thermistors RT 11 and thermistor RT 12 The second temperature acquisition group includes thermistors RT arranged in parallel 21 and thermistor RT 22 ;refer to Fig.10 , the temperature measuring thermistor 6 in the figure is two thermistors arranged in parallel;

[0083] Overhead line sampling resistance comparison unit 11 is used to compare the thermistor RT 11 The real-time voltage of the thermistor RT is fed into the non-inverting input of the first comparator IC1 and the inverting input of the second comparator IC2; 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;

[0084] The comparator sampling unit 12 is used to determine whether the over-the-air line sampling resistance comparison unit 11 is caused by the thermistor RT according to the output signals of the first comparator IC1 and the second comparator IC2. 12 Or thermistor RT 22 Control the collected input voltage input to the inverting input terminal of the third comparator IC3;

[0085] A reference voltage providing unit 13 is used to provide a reference input voltage of a non-inverting input terminal of the voltage comparator IC3; the reference input voltage is controlled by the thermistor RT0;

[0086] The communication control unit includes a voltage comparator IC3, which is used to receive the collected input voltage and the reference input voltage and output the communication drive signal to control the communication module to be powered on; after the communication module is powered on, the warning information is sent to the background server;

[0087] The power module is used to supply power to the data acquisition unit, the overhead line sampling resistance comparison unit 11, the comparator sampling unit 12, the reference voltage providing unit 13, and the communication control unit. The battery module uses a lithium battery. In some embodiments, a CT is used to obtain power from the overhead line 1. In some embodiments, a solar panel is installed to obtain power. This is a common technical means used by those skilled in the art and will not be described in detail here.

[0088] In some embodiments, the overhead line sampling resistance comparison unit 11 includes a first comparator IC1, a second comparator IC2, and resistors R0 and R1 with the same resistance; one end of the resistor R0 is connected to the inverting input end of the first comparator IC1, the non-inverting input end of the second comparator IC2, and the thermistor RT 21 One end of the resistor R1 is connected to the non-inverting input end of the first comparator IC1, the inverting input end of the second comparator IC2, and the thermistor RT 11 The other ends of the resistors R0 and R1 are grounded;

[0089] Thermistor RT 21 The other end of the thermistor RT 11 The other end is connected to the positive pole V+ of the power supply;

[0090] The thermistor RT 11 、Thermistor RT 21 All are positive temperature coefficient thermistors.

[0091] The first comparator IC1 and the second comparator IC2 are electrically connected to the power module.

[0092] In some embodiments, the comparator sampling unit 12 includes a transistor Q1, a transistor Q2 and a thermistor RT 12 and thermistor RT 22The base of the transistor Q1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the output end of the first comparator IC1;

[0093] The base of the transistor Q2 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the output end of the second comparator IC2;

[0094] The emitter of transistor Q1 and thermistor RT 12 Connect one end of the thermistor RT 12 The other end of the transistor Q2 is grounded; the emitter of the transistor Q2 is connected to the thermistor RT 22 Connect one end of the thermistor RT 22 The other end is grounded;

[0095] The collector of the transistor Q1 and the collector of the transistor Q2 are both connected to the inverting input terminal of the voltage comparator IC3 and one end of the resistor R4; the other end of the resistor R4 is connected to the positive electrode V+ of the power supply;

[0096] The thermistor RT 12 、Thermistor RT 22 All are positive temperature coefficient thermistors.

[0097] 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, and the other end of the resistor R6 is connected to one end of the resistor R5 and the non-inverting input end of the voltage comparator IC3; the other end of the resistor R5 is connected to the positive electrode V+ of the power supply;

[0098] The thermistor RT0 is a negative temperature coefficient thermistor.

[0099] In some embodiments, the communication control unit includes a voltage comparator IC3 and a transistor Q3; the input end of the voltage comparator IC3 is connected in series with a resistor R9 and then connected to the base of the transistor Q3;

[0100] A resistor R7 is connected in series between the non-inverting input terminal of the voltage comparator IC3 and the resistor R6;

[0101] A resistor R8 is connected in parallel between the non-inverting input terminal of the voltage comparator IC3 and the base of the transistor Q3;

[0102] The collector of the transistor Q3 is connected to the positive electrode V+ of the power supply, and the emitter of the transistor Q3 is electrically connected to the communication module.

[0103] The working principle of the overhead line temperature measurement module suitable for severe weather provided in this application is as follows:

[0104] refer to Figure 1 , thermistor RT 21 and thermistor RT 11 At the same time, the temperature of the overhead line 1 is detected, and the non-inverting input terminal and the inverting input terminal of the first comparator IC1 simultaneously obtain the temperature of the thermistor RT 21 and thermistor RT 11 The voltage when RT 11 The detected temperature is high, RT 11 The resistance value increases, so that the voltage at the non-inverting input terminal of the first comparator IC1 is higher than the voltage at its inverting input terminal, and the first comparator IC1 outputs the voltage V+; at this time, since the voltage at the non-inverting input terminal of the second comparator IC2 is lower than the power supply at its inverting input terminal, the output terminal of the second comparator IC2 will not output a voltage; the transistor Q1 in the comparator sampling unit 12 in the figure will be turned on, providing the inverting input terminal voltage to the voltage comparator IC3;

[0105] At the same time, the input voltage of the non-inverting input terminal of the voltage comparator IC3 is controlled by the thermistor RT0. The thermistor RT0 collects the ambient temperature in real time. When the external ambient temperature decreases, the resistance of the thermistor RT0 increases, which is reflected in Figure 1 In the figure, the reference input voltage at the in-phase input terminal of the voltage comparator IC3 decreases, that is, at this time, only when the temperature of the overhead line 1 is lower, and the collection input voltage input to the inverting input terminal of the voltage comparator IC3 is lower, the voltage comparator IC3 will have a signal output; in other words, when the external ambient temperature decreases, the alarm temperature of the overhead line 1 designed by the temperature measurement module of the present application will also become lower; when the external ambient temperature increases, the alarm temperature of the overhead line 1 designed by the temperature measurement module of the present application will also increase;

[0106] This is because changes in the external environment have a certain impact on the temperature of the overhead line 1 itself. Using a fixed alarm threshold for the overhead line temperature exceeding the limit is not suitable for the needs of temperature monitoring of the overhead line 1 in harsh environments.

[0107] refer to Figure 2 as well as Figure 3 The present application also provides an overhead line temperature measuring device suitable for severe weather. Except for the first temperature acquisition group and the second temperature acquisition group, the rest of the temperature measuring module is installed in the control box 5 of the temperature measuring device. The overhead line temperature measuring device suitable for severe weather includes:

[0108] A heat-insulating shell 2 for being mounted on an overhead line 1; a first rubber plug 3 and a second rubber plug 4 detachably arranged at both ends of the heat-insulating shell 2; a detection mechanism arranged inside the heat-insulating shell 2; a control box 5 arranged outside the heat-insulating shell 2; the first temperature acquisition group and the second temperature acquisition group are both arranged in the detection mechanism.

[0109] This embodiment is applicable to the scenario where, when the overhead line 1 is being constructed and installed, the temperature measurement module of the present application is installed at a suitable position on the overhead line 1 .

[0110] Specifically, refer to Figure 4 , Figure 5 , Figure 7 and Figure 8 The heat-insulating shell 2 comprises a first heat-insulating shell 20 and a second heat-insulating shell 200 which are detachably connected; a fixing ring 21 is fixedly sleeved on the outside of one end of the first heat-insulating shell 20; a first half fixing ring 22 is sleeved on the outside of the other end of the first heat-insulating shell 20; a second half fixing ring 220 which cooperates with the first half fixing ring 22 is provided at one end of the second heat-insulating shell 200, and the other end is detachably connected to the fixing ring 21; a sliding bar 26 is provided at the part of the first heat-insulating shell 20 which is connected to the second heat-insulating shell 200, and a sliding groove 260 which cooperates with the sliding bar 26 is provided on the second heat-insulating 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-insulating shell 20; both ends of the inner wall of the first heat-insulating shell 20 are provided with There is a first internal thread 24; the inner walls at both ends of the second heat-insulating shell 200 are provided with second internal threads 240 that match the first internal threads 24; when the second heat-insulating shell 200 is installed in the fixing ring 21, the slide bar 26 is just in the slide groove 260; a plurality of first fixing threaded holes 27 are provided on the inner connecting ring 23, and the end of the second heat-insulating shell 200 is provided with second fixing threaded holes 270 that match the first fixing threaded holes 27. When the second heat-insulating shell 200 is installed in the fixing ring 21, the two are fixed by installing screws; an accommodating space 29 is formed between the first half fixing ring 22, the second half fixing ring 220, and the middle of the fixing ring 21; the two accommodating spaces 29 are respectively provided with a first rubber plug 3 and a second rubber plug 4;

[0111] refer to Fig.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 threadedly connected to the end of the insulation shell 2, and a tubular passage for passing 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 are formed with an opening 302 along the central axial direction of the tubular passage.

[0112] refer to Fig. 9 as well as Fig.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 arranged on the inner walls of the first insulation shell 20 and the second insulation shell 200; the first insulation shell 20 and the second insulation shell 200 are both provided with a sliding cavity 7, 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 conduction plate 8; a sliding plate 9 is arranged around the heat conduction plate 8, and the sliding plate 9 is slidably connected to the inner wall of the sliding cavity 7; the first temperature collection group and the second temperature collection group are respectively fixedly provided on the heat conduction plate 8 in the first insulation shell 20 and the second insulation shell 200, and are located in the sliding cavity 7.

[0113] refer to Figure 6 The first insulation shell 20 and the second insulation shell 200 are both provided with a wire outlet 51 at the bottom of the sliding cavity 7, and the wire outlet 51 is used to pass a 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 in the control box 5.

[0114] In this embodiment, the insulation shell 2 is made of 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 heat conductivity and high thermal conductivity coefficient.

[0115] When installing the overhead line temperature measurement module suitable for severe weather in this embodiment, refer to Figure 3 , Figure 4 and Figure 7 ,

[0116] First, separate the first insulation shell 20 from the second insulation shell 200; then, when constructing the overhead line 1, first put the fixing ring 21 on the overhead line 1, that is, place the first insulation shell 20 on the overhead line 1, and then install the second insulation shell 200; tighten all the installation screws; refer to Fig.11 , and finally install the first rubber plug 3 and the second rubber plug 4. When installing the rubber plug, since the rubber itself has elasticity, align the opening 302 in the figure with the overhead line 1, and respectively put the first rubber plug 3 and the second rubber plug 4 on the overhead line 1, and then rotate them into the accommodating space 29 and tighten them, and finally tighten the screws in the third fixing threaded hole 28 to fix them.

[0117] In some embodiments, thermal grease is filled between the first rubber plug 3 and the second rubber plug 4 inside the heat insulation shell 2. The function of the thermal grease is to make the temperature measurement of the overhead line 1 by the heat conducting plate 8 more accurate. In harsh environments such as windy weather, the overhead line 1 shakes, which will cause friction and gaps between the heat conducting plate 8 and the overhead line 1, affecting the temperature measurement. After filling with thermal grease, this defect is overcome. On the other hand, thermal grease is a paste-like thermal interface material and will not affect the function of the compression spring 10.

[0118] This application also provides a second preferred embodiment, referring to Fig.12 , which is different from the first embodiment, is that this embodiment is applicable to the case where it is necessary to add a temperature measuring point to the overhead line 1 and install a temperature measuring module after the overhead line 1 has been installed. Fig.12 In the second embodiment, the difference from the first embodiment is that: the first heat insulation shell 20 and the second heat insulation shell 200 both include a half shell 401, and both sides of the half shell 401 are fixedly connected with a semicircular ring 402; the ends of the half shells 401 of the first heat insulation shell 20 and the second heat insulation shell 200 are fixedly provided with a connecting plate 400, and a matching mounting hole is opened on the connecting plate 400, and the first heat insulation shell 20 and the second heat insulation shell 200 are fixed by installing fixing bolts in the mounting holes; and 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. The rest of the parts are exactly the same as the first embodiment, and are not repeated here.

[0119] When installing the overhead line temperature measurement module suitable for severe weather in the second embodiment, the first insulation shell 20 and the second insulation shell 200 are placed on both sides of the overhead line 1 respectively, and then the slide groove 260 is installed in alignment with the slide bar 26, 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.

[0120] The overhead line temperature measuring device applicable to severe weather of the present application has a detection mechanism designed at both ends of the overhead line 1, and the larger temperature at both ends of the overhead line 1 is taken as the measurement point, so that the measurement result is more accurate and reliable; on the other hand, the design of the compression spring 10 and the heat conducting plate 8 in the detection mechanism ensures that when the overhead line 1 is shaking, the heat conducting plate 8 is always against the overhead line 1 under the pressure of the compression spring 10, so that the measurement effect is reliable; finally, the overhead line temperature measuring device applicable to severe weather of the present application, the first rubber plug 3 and the second rubber plug 4 are both made of rubber material, which is an elastic material, so that the overhead line 1 will not cause rigid damage to the temperature measuring device of the present application when it is shaking.

[0121] The overhead line temperature measurement module and temperature measurement device applicable to severe weather of the present application can realize temperature collection at multiple positions of the overhead line 1, and the thermistor used by the overhead line sampling resistor comparison unit 11 and the comparator sampling unit 12 at the same position is not the same, but two adjacent thermistors, which has the effect of isolating the thermistor of the sampling resistor comparison unit from the thermistor used by the comparator sampling unit, the thermistor of the sampling resistor comparison unit is only used for comparison, the thermistor of the comparator sampling unit is only used to provide the reverse voltage of the voltage comparator IC3, and at the same time, the thermistor RT 12 and thermistor RT 22 Only one is powered on. This design reduces power consumption on the one hand, and on the other hand, the comparison of the sampling resistors is completed by the first comparator IC1 and the second comparator IC2 instead of data processing by the processor, which reduces power consumption and costs. On the other hand, the ambient temperature detected by the thermistor RT0 is added to the reference voltage providing unit 13 of the voltage comparator IC3. This design ensures that the overhead line temperature measurement module of the present application is suitable for severe weather, and its alarm threshold for the over-limit temperature of the overhead line is not a fixed value, but a value that changes with the ambient temperature, that is, the alarm threshold for the over-limit temperature of the overhead line can be adaptively adjusted as the temperature of the surrounding environment of the overhead line changes.

[0122] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0123] Although the above describes the specific implementation methods of the present application in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present application. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present application, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present application.

Claims

1. Overhead line temperature measurement module suitable for severe weather, characterized by: include: The data acquisition unit includes a thermistor RT0 for collecting ambient temperature and a first temperature acquisition group and a second temperature acquisition group for measuring the temperature at different positions of the overhead line. The first temperature acquisition group includes the thermistors RT 11 and thermistor RT 12 The second temperature acquisition group includes thermistors RT arranged in parallel 21 and thermistor RT 22 ; Overhead line sampling resistance comparison unit (11) is used to compare the thermistor RT 11 The real-time voltage of the thermistor RT is sent to the non-inverting input terminal of the first comparator IC1 and the inverting input terminal of the second comparator IC2; 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 whether the over-the-air line sampling resistance comparison unit (11) is caused by the thermistor RT according to the output signals of the first comparator IC1 and the second comparator IC2. 12 Or thermistor RT 22 Control the collected input voltage input to the inverting input terminal of the third comparator IC3; A reference voltage providing unit (13) is used to provide a reference input voltage of a common-phase input terminal of a voltage comparator IC3; the reference input voltage is controlled by a thermistor RT0; The communication control unit includes a voltage comparator IC3, which is used to receive the collected input voltage and the reference input voltage and output the communication drive signal to control the communication module to be powered on; The communication module sends the warning information to the background server after being powered on; A power supply module is used to supply power to a data acquisition unit, an overhead line sampling resistance comparison unit (11), a comparator sampling unit (12), a reference voltage providing unit (13), and a communication control unit.

2. The overhead line temperature measurement module suitable for severe weather according to claim 1, characterized in that: The overhead line sampling resistance comparison unit (11) comprises a first comparator IC1, a second comparator IC2, and resistors R0 and R1 with the same resistance; one end of the resistor R0 is connected to the inverting input end of the first comparator IC1, the non-inverting input end of the second comparator IC2, and the thermistor RT 21 One end of the resistor R1 is connected to the non-inverting input end of the first comparator IC1, the inverting input end of the second comparator IC2, and the thermistor RT 11 The other ends of the resistors R0 and R1 are grounded; Thermistor RT 21 The other end of the thermistor RT 11 The other end is connected to the positive pole 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 according to claim 1, characterized in that: The comparator sampling unit (12) comprises a transistor Q1, a transistor Q2 and a thermistor RT 12 and thermistor RT 22 The base of the transistor Q1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the output end of the first comparator IC1; The base of the transistor Q2 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the output end of the second comparator IC2; The emitter of transistor Q1 and thermistor RT 12 Connect one end of the thermistor RT 12 The other end of the transistor Q2 is grounded; the emitter of the transistor Q2 is connected to the thermistor RT 22 Connect one end of the thermistor RT 22 The other end is grounded; The collector of the transistor Q1 and the collector of the transistor Q2 are both connected to the inverting input terminal of the voltage comparator IC3 and one end of the resistor R4; the other end of the resistor R4 is connected to the positive electrode V+ of the power supply; The thermistor RT 12 、Thermistor RT 22 All are positive temperature coefficient thermistors.

4. The overhead line temperature measurement module suitable for severe weather according to claim 1, characterized in that: The reference voltage providing unit (13) comprises 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 end of the voltage comparator IC3; the other end of the resistor R5 is connected to the positive electrode V+ of the power supply; The thermistor RT0 is a negative temperature coefficient thermistor.

5. The overhead line temperature measurement module suitable for severe weather according to claim 1, characterized in that: The communication control unit includes a voltage comparator IC3 and a transistor Q3; the input end 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 the voltage comparator IC3 and the base of the transistor Q3; The collector of the transistor Q3 is connected to the positive electrode V+ of the power supply, and the emitter of the transistor Q3 is electrically connected to the communication module.

6. An overhead line temperature measuring device suitable for use in severe weather, based on the overhead line temperature measuring module suitable for use in severe weather as described in any one of claims 1 to 5 above, characterized in that: include: A heat-insulating shell (2) for being mounted on an overhead line (1); A first rubber plug (3) and a second rubber plug (4) detachably arranged at both ends of the heat-insulating shell (2); A detection mechanism disposed inside the heat-insulating shell (2); A control box (5) disposed outside the heat-insulating shell (2); The first temperature acquisition group and the second temperature acquisition group are both arranged in the detection mechanism.

7. The overhead line temperature measurement module suitable for severe weather according to claim 6, characterized in that: The heat-insulating shell (2) comprises a first heat-insulating shell (20) and a second heat-insulating shell (200) which are detachably connected; A fixing ring (21) is fixedly sleeved on the outside of one end of the first heat-insulating shell (20); a first half fixing ring (22) is fixedly sleeved on the outside of the other end of the first heat-insulating shell (20); One end of the second heat-insulating shell (200) is provided with a second half fixing ring (220) that matches the first half fixing ring (22), and the other end is detachably connected to the fixing ring (21); An annular inner connecting ring (23) is fixedly arranged inside the fixing ring (21), and the inner connecting ring (23) is fixedly connected to the end of the first heat-insulating shell (20); When the second heat-insulating shell (200) is installed in the fixing ring (21), the sliding strip (26) is exactly located in the sliding 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-insulating shell (200) is provided with second fixing threaded holes (270) that match the first fixing threaded holes (27). When the second heat-insulating shell (200) is installed in the fixing ring (21), the two are fixed by installing screws; An accommodation space (29) is formed between the first half fixing ring (22), the second half fixing ring (220), and in the middle of the fixing ring (21).

8. The overhead line temperature measurement module suitable for severe weather according to claim 6, characterized in that: The heat-insulating shell (2) comprises a first heat-insulating shell (20) and a second heat-insulating shell (200) which are mutually matched and detachably connected; the first heat-insulating shell (20) and the second heat-insulating shell (200) both comprise a half shell (401), and both sides of the half shell (401) are fixedly connected with a semicircular ring (402); The ends of the half shells (401) of the first heat-insulating shell (20) and the second heat-insulating shell (200) are both fixedly provided with connecting plates (400), and matching mounting holes are provided on the connecting plates (400), and the first heat-insulating shell (20) and the second heat-insulating shell (200) are fixed by installing fixing bolts in the mounting holes; An accommodating space (29) is formed in the middle between the half shells (401) of the first heat-insulating shell (20) and the second heat-insulating shell (200).

9. The overhead line temperature measurement module suitable for severe weather according to any one of claims 7 or 8, characterized in that: A sliding bar (26) is provided on the portion of the first heat-insulating shell (20) that is connected to the second heat-insulating shell (200), and a sliding groove (260) that cooperates with the sliding bar (26) is provided on the second heat-insulating shell (200); The inner walls at both ends of the first heat-insulating shell (20) are provided with first internal threads (24); the inner walls at both ends of the second heat-insulating shell (200) are provided with second internal threads (240) that match the first internal threads (24); A first rubber plug (3) and a second rubber plug (4) are respectively provided in the two accommodating spaces (29); The first rubber plug (3) and the second rubber plug (4) both comprise a plug body (300), one end of the plug body (300) being provided with a mounting thread ring (301) threadedly connected to the end of the heat insulation shell (2), a tubular passage for passing the overhead line (1) being 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) are formed with an opening (302) along the central axial direction of the tubular passage. The detection mechanism comprises a first detection mechanism (25) and a second detection mechanism (250); the first detection mechanism (25) and the second detection mechanism (250) are respectively arranged on the inner walls of the first heat-insulating shell (20) and the second heat-insulating shell (200); The first heat-insulating shell (20) and the second heat-insulating shell (200) are both provided with a sliding cavity (7), the bottom of the 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); 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 collection group and a second temperature collection group are fixedly provided on the heat conducting plates (8) in the first heat insulating shell (20) and the second heat insulating shell (200) and are located in the sliding cavity (7).

10. The overhead line temperature measurement module suitable for severe weather according to claim 9, characterized in that: The first heat-insulating shell (20) and the second heat-insulating shell (200) are both provided with a wire outlet (51) at the bottom of the sliding cavity (7), and the wire outlet (51) is used for passing a detection wire (52); The detection line (52) is used to connect the first temperature acquisition group and the second temperature acquisition group to the circuit board in the control box (5); The heat-insulating shell (2) is made of 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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