Electric power fitting temperature measuring device

Abstract

The invention discloses an electric power fitting temperature measuring device, and belongs to the field of temperature measurement, the electric power fitting temperature measuring device comprises a support, the two ends of the support are provided with clamps, and the support can be installed on a cable penetrating through the two ends of an electric power fitting through the clamps; two detection mechanisms are symmetrically arranged on the bracket; the detection mechanism comprises shells, heat conduction pipes are uniformly inserted into the side walls of the shells, the heat conduction pipes are located on the side walls of the adjacent sides of the two shells, elastic corrugated pipes are fixedly installed at the ends, away from the shells, of the heat conduction pipes, and the elastic corrugated pipes are made of metal materials; the elastic corrugated pipe, the heat conduction pipe, the first memory alloy wire, the heat conduction rod and the heat conduction plate are arranged; the elastic corrugated pipe has the telescopic characteristic, so that the application range of the device is expanded, and the device can be suitable for electric power fittings with irregular surfaces; and through mutual cooperation of a heat conduction pipe, a first memory alloy wire, a heat conduction plate and a heat conduction rod, multiple parts of the electric power fitting can be detected under the action of only arranging one temperature sensor.

Description

Technical Field

[0001] The present invention relates to the field of temperature measurement, and more specifically, to a temperature measurement device for electric power fittings. Background Art

[0002] Electric power fittings are metal accessories that connect and combine various devices in the power system, including wire clamps, line clamps, lead hooks, earthing cross arms, etc., and play a role in transmitting mechanical loads, electrical loads, and certain protective functions; since heat is generated when current passes through electric power fittings, some fittings may be damaged due to overheating, which not only affects the operation efficiency of the power system, but may also cause equipment failures and even safety accidents such as fires. Therefore, temperature measurement of electric power fittings is one of the important measures to ensure the safe and stable operation of the power system.

[0003] In the prior art, traditional temperature measurement methods mainly rely on manual inspections, but this method has problems such as low temperature measurement accuracy, poor real-time performance, high cost, and complex installation, and cannot meet the monitoring requirements;

[0004] Chinese Patent with the authorization announcement number: CN210922864U discloses a temperature measurement device for electric power fittings. A heat-conducting pendulum block that contacts and conducts heat with the electric power fitting is hinged at the free end of a pendulum rod, and a temperature sensor is arranged on the heat-conducting pendulum block; a pressing member for keeping the heat-conducting pendulum block in pressure contact with the electric power fitting is also arranged on the clamping block, so that multiple parts of the fitting can be measured by the movement of the heat-conducting pendulum block.

[0005] The above patent still has the following deficiencies:

[0006] During the swinging process of high-voltage wires and electric power fittings, due to the continuous relative movement between the two, frictional forces will generate a certain amount of heat. This additional heat generated by friction will be detected by the temperature sensor, thus interfering with the actual measurement results of the temperature sensor; the data recorded by the temperature sensor in this case does not fully reflect the true ambient or equipment temperature, resulting in relatively low accuracy of the final temperature readings; and multi-point detection can only be achieved by sliding to change the position. When not sliding, multiple parts of the electric power fitting cannot be synchronously detected.

[0007] Therefore, a temperature measurement device for electric power fittings is proposed. Summary of the Invention

[0008] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a temperature measurement device for electric power fittings, which can reduce the influence of external factors on the detection process. At the same time, through the cooperation of the temperature sensor with the heat-conducting rod and the heat-conducting tube, the applicable range of the device is expanded, so that the device can be applicable to different models of electric power fittings.

[0009] To solve the above problems, the present invention adopts the following technical solutions.

[0010] A temperature measuring device for electric power fittings includes a bracket. Clamps are provided at both ends of the bracket, and the bracket can be installed on the cable passing through both ends of the electric power fitting through the clamps.

[0011] Two detection mechanisms are symmetrically arranged on the bracket.

[0012] The detection mechanism includes a housing. Heat conduction tubes are evenly inserted on the side wall of the housing. The heat conduction tubes are located on the side walls of the adjacent sides of the two housings. One end of the heat conduction tube away from the housing is fixedly installed with an elastic corrugated pipe. The elastic corrugated pipe is made of a metal material. During installation, due to the elasticity of the elastic corrugated pipe, for the electric power fitting with an uneven surface, by utilizing the telescopic characteristic of the elastic corrugated pipe, the elastic corrugated pipe can be brought into contact with the electric power fitting. The heat generated by the electric power fitting is transferred to the elastic corrugated pipe and the heat conduction tube through heat exchange. One end of the heat conduction tube located inside the housing is open, and a heat conduction rod is movably inserted into the heat conduction tube. The heat conduction rod is in sliding fit with the inner wall of the heat conduction tube. A first shape memory alloy wire is jointly installed between the heat conduction rod and the inner end surface of the heat conduction tube. The heat conduction tube transfers heat to the heat conduction rod and the first shape memory alloy wire through heat exchange. The first shape memory alloy wire expands when heated and pushes the heat conduction rod out of the heat conduction tube.

[0013] A temperature sensor, a control mechanism and a heat conduction plate are arranged inside the housing. When the heat conduction rod transfers heat to the heat conduction plate, the control mechanism is used to control the temperature sensor to work. The temperature sensor is used to detect the temperature of the heat conduction plate. The heat conduction rod cooperates with the heat conduction plate. A cavity is formed on the heat conduction plate. Sleeves corresponding to the heat conduction rods one by one are inserted on the side wall of the cavity. The inner wall of the sleeve is frustum-shaped. The inner diameter of the sleeve at the end away from the plate is smaller than the inner diameter of the sleeve at the end close to the plate. A sealing plate is movably arranged inside the sleeve. The sealing plate is used to block the sleeve, and a driving mechanism cooperating with the sealing plate is arranged inside the sleeve. The sealing plate is made of a heat-insulating material. When the heat conduction rod extends out of the heat conduction tube and inserts into the sleeve, at this time, under the action of heat exchange, the heat conduction rod transfers heat to the heat conduction plate and the sleeve, so that the temperature of the heat conduction plate can be detected by the temperature sensor, and thus the temperature of the electric power fitting can be indirectly detected.

[0014] When the first shape memory alloy wire expands and pushes the heat conduction rod into contact with the sealing plate, the sealing plate is pushed by the heat conduction rod. At this time, the heat conduction rod inserts into the sleeve, and the heat of the heat conduction rod is transferred to the sleeve and the heat conduction plate. At the same time, the other sealing plates that are not in contact with the heat conduction rod are located at the end of the sleeve away from the cavity under the action of the driving mechanism. The sealing plates block the sleeve, preventing the cavity from communicating with the outside, playing a role in preventing the heat in the cavity from leaking, and improving the accuracy of the temperature sensor detection.

[0015] Furthermore, the control mechanism includes a switch fixedly installed on the inner wall of the housing near one side of the heat conducting rod. The switch is connected in series with the temperature sensor. By pressing the switch, the temperature sensor can be controlled to stop working, and when the pressing of the switch stops, the temperature sensor can start working. An elastic membrane is fixedly installed in the housing, and a pressing plate is embedded on the elastic membrane. When the pressing plate is not subjected to external pressure, the elastic membrane drives the pressing plate to squeeze the switch, making the temperature sensor in a power-off state. Small holes matching the heat conducting rod are evenly formed in the pressing plate, and the ratio of the diameter of the small holes to the diameter of the heat conducting rod is 1.5 - 2. Therefore, the heat conducting rod can pass through the small holes. A retaining ring matching the heat conducting rod is fixedly sleeved on the part of the heat conducting rod between the pressing plate and the switch, and the ratio of the outer diameter of the retaining ring to the diameter of the small holes is 1.5 - 2. Therefore, when the heat conducting rod is inserted into the small holes and continues to move, the heat conducting rod will push the pressing plate through the retaining ring. At this time, the elastic membrane deforms, and the pressing plate is separated from the switch. Therefore, the temperature sensor works. That is, when the electrical fitting is at a reasonable temperature, the temperature sensor does not need to work, which plays a role in saving electric energy. At the same time, it can reduce the working frequency of the temperature sensor, playing a role in extending the service life of the temperature sensor.

[0016] Furthermore, a heat preservation sleeve is commonly sleeved outside the heat conducting plate and the sleeve. The temperature sensor is embedded on the heat preservation sleeve, and the probe of the temperature sensor is attached to the surface of the heat conducting plate. The heat preservation sleeve is evenly provided with holes, and the holes correspond to the sleeves one by one. The heat preservation sleeve can prevent heat dissipation and improve the accuracy of the temperature sensor detection.

[0017] Furthermore, the driving mechanism includes chutes symmetrically formed on the inner side wall of the sleeve. The chutes are trapezoidal. Rectangular insertion holes are symmetrically formed on the side wall of the sealing plate. A rectangular sliding rod is slidably installed in the insertion holes, and the sliding rod is slidably arranged in the chutes. An elastic strip is fixedly installed between the sliding rod and the side wall of the insertion hole. The side walls of the chutes clamp the sliding rod, and under the action of the elastic strip, the sliding rod is always located in the chutes. Therefore, the angle of the sealing plate can be restricted by the rectangular sliding rod and the insertion hole, preventing the sealing plate from rotating, playing a role in ensuring that the sealing plate can block the sleeve.

[0018] An elastic member is installed between the side wall of the cavity and the sliding rod. When the sliding rod is not subjected to the pressure exerted by the heat conducting rod, the elastic member is in a freely extended state. At this time, under the action of the elastic member, the sealing plate is located at one end of the sleeve far from the cavity. When the heat conducting rod exerts pressure on the sealing plate, the elastic member contracts, and the sealing plate moves along the sleeve.

[0019] Furthermore, a diversion cavity is formed in the sleeve. Air holes are evenly formed on the side wall of the diversion cavity. The elastic member is an elastic airbag, and the output end of the elastic airbag extends into the diversion cavity.

[0020] During the process of the heat conducting rod pushing the sealing plate to move, the elastic airbag is squeezed. At this time, the gas in the elastic airbag is discharged into the diversion cavity and discharged through the air holes on the side wall of the diversion cavity. The gas discharged from the diversion cavity impacts the heat conducting rod inserted into the sleeve. Since the inner wall of the sleeve is frustum-shaped, there is a gap between the heat conducting rod and the inner side wall of the sleeve. Therefore, after the gas discharged from the air hole contacts the heat conducting rod and absorbs heat, it will flow into the cavity, and then the heat of the heat conducting rod can be evenly and quickly transferred to the heat conducting plate, enabling the temperature sensor to timely detect the real-time temperature of the electrical fitting with abnormal temperature, which plays a role in improving the detection efficiency.

[0021] Furthermore, a magnet is fixedly installed on the inner side wall of the elastic bellows away from the heat conducting tube. The magnets at symmetric positions on the two detection mechanisms attract each other. Since the two detection mechanisms are symmetrically arranged and the magnets in the adjacent corresponding elastic bellows on the two shells attract each other, when the shell is clamped on both sides of the electrical fitting, the two magnets symmetrically distributed on both sides of the electrical fitting attract each other. At this time, the pressure between the elastic bellows and the electrical fitting is increased, that is, the friction force is increased. Therefore, it can prevent the elastic bellows from generating heat due to friction on the surface of the electrical fitting, further improving the detection accuracy.

[0022] Furthermore, an elastic sheet is fixedly installed in the heat conducting tube, and the heat conducting rod is fixedly inserted on the elastic sheet. Therefore, during the process of the first shape memory alloy wire pushing the heat conducting rod to move, it can prevent the heat conducting rod from contacting the heat conducting tube, and further prevent the heat generated by the mutual friction between the heat conducting tube and the heat conducting rod from affecting the detection result, improving the detection accuracy.

[0023] Furthermore, ammonia gas is filled in the elastic bellows. When the heat is transferred to the elastic bellows, the ammonia gas is also heated. At this time, the ammonia gas expands. Since the elastic bellows has the characteristic of being able to stretch unidirectionally, when the ammonia gas expands, it can make the elastic bellows have a tendency to stretch, further increasing the pressure between the elastic bellows and the electrical fitting, improving the fixing effect on the elastic bellows, and being able to prevent the elastic bellows from shaking during the detection process, playing a role in improving the stability of the elastic bellows.

[0024] Furthermore, an elastic sleeve is fixedly installed on the outside of the elastic bellows. The ratio of the length of the elastic sleeve to the length of the elastic bellows is 1.1 - 1.2. Therefore, the elastic sleeve protrudes from the outside of the elastic bellows, and during installation, the end faces of the corresponding elastic bellows on the two shells are in a parallel state. Therefore, the elastic sleeve will fit on the surface of the electrical fitting, and the elastic sleeve is squeezed and deformed. The end face of the elastic sleeve away from the shell is evenly provided with negative pressure grooves, and multiple negative pressure grooves on the same elastic sleeve are interconnected. When the elastic sleeve is squeezed, the gas in the negative pressure grooves is squeezed out. Therefore, under the action of negative pressure, the elastic sleeve will tightly adsorb on the surface of the electrical fitting, further improving the stability of the elastic bellows.

[0025] A conduit extending into the negative pressure chamber is inserted into the bottom wall of the heat conduction tube. During the process of the heat conduction rod extending out of the heat conduction tube, the inside of the heat conduction tube is in a negative pressure state. Therefore, the heat conduction tube sucks air from the negative pressure chamber through the conduit, further enhancing the negative pressure intensity of the negative pressure chamber, improving the adsorption effect of the elastic sleeve, playing a role in enhancing the stability of the elastic corrugated pipe. At the same time, since the elastic sleeve can deform, it plays a role in ensuring that the heat conduction rod can extend out of the heat conduction tube in a timely manner.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] (1) In this solution, an elastic corrugated pipe, a heat conduction tube, a first shape memory alloy wire, a heat conduction rod and a heat conduction plate are provided; due to the telescopic characteristics of the elastic corrugated pipe, the applicable range of the device is expanded, and it can be applied to irregular surface electrical fittings; and through the mutual cooperation of the heat conduction tube, the first shape memory alloy wire, the heat conduction plate and the heat conduction rod, multiple parts of the electrical fitting can be detected under the action of only one temperature sensor, playing a role in cost saving;

[0028] (2) In this solution, a heat insulation sleeve, a sealing plate and an elastic member are provided; during the process of the heat conduction rod transferring heat to the heat conduction plate, heat loss can be prevented, improving the detection accuracy;

[0029] (3) In this solution, a sleeve with a frustum-shaped inner wall, an elastic member, a diversion cavity and air holes are provided; the heat conduction rod can transfer heat to the heat conduction plate in a timely manner, improving the detection efficiency of the temperature sensor;

[0030] (4) In this solution, two sets of detection mechanisms and magnets are symmetrically arranged, enabling the magnets symmetrically distributed on both sides of the electrical fitting to attract each other, thereby increasing the friction between the elastic corrugated pipe and the electrical fitting, preventing heat generation due to the sliding of the elastic corrugated pipe on the surface of the electrical fitting, and improving the detection accuracy;

[0031] (5) In this solution, an elastic sleeve, a conduit and a negative pressure chamber are provided, which can strengthen the fixing effect on the elastic corrugated pipe during the process of the heat conduction rod extending out, further improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a top view structural schematic diagram of the present invention;

[0033] Figure 2 is a bottom view structural schematic diagram of the present invention;

[0034] Figure 3 is a cross-sectional structural schematic diagram of the housing of the present invention;

[0035] Figure 4 is the present inventionFigure 3 A schematic diagram of the enlarged structure at A in the middle;

[0036] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0037] Figure 6 It is a schematic diagram of the structure of CC of the present invention;

[0038] Figure 7 It is a schematic diagram of the cross-sectional structure of the sealing plate of the present invention.

[0039] Description of the numbers in the figure:

[0040] 1. Bracket; 2. Clamp; 3. Shell; 4. Heat-conducting pipe; 5. Elastic bellows; 6. Heat-conducting rod; 7. First memory alloy wire; 8. Temperature sensor; 9. Heat-conducting plate; 10. Sleeve; 11. Sealing plate; 12. Switch; 13. Elastic membrane; 14. Pressing plate; 15. Clamp; 16. Insulating sleeve; 17. Sliding rod; 18. Elastic strip; 19. Elastic part; 20. Diversion chamber; 21. Air hole; 22. Magnet; 23. Elastic sheet; 24. Elastic sleeve; 25. Negative pressure groove; 26. Catheter. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0042] Embodiment 1:

[0043] See also Figures 1 to 7 , an electric power fitting temperature measuring device, comprising a bracket 1, both ends of the bracket 1 are provided with clamps 2, and the bracket 1 can be installed on the cable passing through the two ends of the electric power fitting through the clamps 2;

[0044] Two detection mechanisms are symmetrically arranged on the bracket 1;

[0045] The detection mechanism includes a housing 3. Heat conduction tubes 4 are evenly inserted on the side walls of the housing 3. The heat conduction tubes 4 are located on the side walls of two adjacent sides of the housing 3. One end of the heat conduction tube 4 far away from the housing 3 is fixedly installed with an elastic bellows 5. The elastic bellows 5 is made of a metal material. During installation, due to the certain elasticity of the elastic bellows 5, for the uneven-surfaced electrical fittings, by utilizing the telescopic characteristic of the elastic bellows 5, the elastic bellows 5 can be brought into contact with the electrical fittings. The heat generated by the electrical fittings is transferred to the elastic bellows 5 and the heat conduction tubes 4 through heat exchange. One end of the heat conduction tube 4 located inside the housing 3 is open. A heat conduction rod 6 is movably inserted into the heat conduction tube 4. The heat conduction rod 6 is in sliding fit with the inner wall of the heat conduction tube 4. A first shape memory alloy wire 7 is installed between the heat conduction rod 6 and the inner end face of the heat conduction tube 4. The heat conduction tube 4 transfers heat to the heat conduction rod 6 and the first shape memory alloy wire 7 through heat exchange. The first shape memory alloy wire 7 expands when heated and pushes the heat conduction rod 6 to extend out of the heat conduction tube 4;

[0046] A temperature sensor 8, a control mechanism and a heat conduction plate 9 are arranged inside the housing 3. When the heat conduction rod 6 transfers heat to the heat conduction plate 9, the control mechanism is used to make the temperature sensor 8 work. The temperature sensor 8 is used to detect the temperature of the heat conduction plate 9. The heat conduction rod 6 cooperates with the heat conduction plate 9. A cavity is formed on the heat conduction plate 9. Sleeves 10 corresponding to the heat conduction rods 6 one by one are inserted on the side wall of the cavity. The inner wall of the sleeve 10 is frustum-shaped. The inner diameter of the sleeve 10 at the end far away from the plate is smaller than the inner diameter of the sleeve 10 at the end close to the plate; A sealing plate 11 is movably arranged inside the sleeve 10. The sealing plate 11 is used to block the sleeve 10, and a driving mechanism cooperating with the sealing plate 11 is arranged inside the sleeve 10; The sealing plate 11 is made of a heat-insulating material; When the heat conduction rod 6 extends out of the heat conduction tube 4, the heat conduction rod 6 is inserted into the sleeve 10. At this time, under the action of heat exchange, the heat conduction rod 6 transfers heat to the heat conduction plate 9 and the sleeve 10, so that the temperature of the heat conduction plate 9 can be detected by the temperature sensor 8, and thus the temperature of the electrical fittings can be indirectly detected;

[0047] When the first shape memory alloy wire 7 expands and pushes the heat conduction rod 6 to contact the sealing plate 11, the sealing plate 11 is pushed by the heat conduction rod 6. At this time, the heat conduction rod 6 is inserted into the sleeve 10. At this time, the heat of the heat conduction rod 6 is transferred to the sleeve 10 and the heat conduction plate 9; At the same time, the other sealing plates 11 that are not in contact with the heat conduction rod 6 are located at the end of the sleeve 10 far away from the cavity under the action of the driving mechanism. The sealing plate 11 blocks the sleeve 10 to prevent the cavity from communicating with the outside, playing a role in preventing the heat in the cavity from leaking and improving the accuracy of the temperature detection by the temperature sensor 8.

[0048] Such as Figure 3As shown in the figure, the control mechanism includes a switch 12 fixedly installed on the inner wall of the housing 3 near one side of the heat conducting rod 6. The switch 12 is connected in series with the temperature sensor 8. By pressing the switch 12, the temperature sensor 8 can be controlled to stop working, and when the pressing of the switch 12 stops, the temperature sensor 8 can start working. An elastic membrane 13 is fixedly installed in the housing 3, and a pressing plate 14 is embedded in the elastic membrane 13. When the pressing plate 14 is not subjected to external pressure, the elastic membrane 13 drives the pressing plate 14 to press the switch 12, so that the temperature sensor 8 is in a power-off state. Small holes matching the heat conducting rod 6 are evenly formed in the pressing plate 14, and the ratio of the diameter of the small holes to the diameter of the heat conducting rod 6 is 1.5 - 2. Therefore, the heat conducting rod 6 can pass through the small holes. A snap ring 15 matching the heat conducting rod 6 is fixedly sleeved on the part of the heat conducting rod 6 between the pressing plate 14 and the switch 12, and the ratio of the outer diameter of the snap ring 15 to the diameter of the small holes is 1.5 - 2. Therefore, when the heat conducting rod 6 is inserted into the small holes and continues to move, the heat conducting rod 6 will push the pressing plate 14 through the snap ring 15. At this time, the elastic membrane 13 deforms, and the pressing plate 14 is separated from the switch 12. Therefore, the temperature sensor 8 works. That is, when the electrical fitting is at a reasonable temperature, the temperature sensor 8 does not need to work, which plays a role in saving electric energy. At the same time, the working frequency of the temperature sensor 8 can be reduced, which plays a role in prolonging the service life of the temperature sensor 8.

[0049] As Figure 3 shown, a heat preservation sleeve 16 is jointly sleeved outside the heat conducting plate 9 and the sleeve 10. The temperature sensor 8 is embedded in the heat preservation sleeve 16, and the probe of the temperature sensor 8 is attached to the surface of the heat conducting plate 9. Holes are evenly formed in the heat preservation sleeve 16, and the holes correspond to the sleeves 10 one by one. The heat preservation sleeve 16 can prevent heat dissipation and improve the detection accuracy of the temperature sensor 8.

[0050] As Figure 4 shown, the driving mechanism includes chutes symmetrically formed on the inner side wall of the sleeve 10. The chutes are trapezoidal. Rectangular insertion holes are symmetrically formed on the side wall of the sealing plate 11. A rectangular sliding rod 17 is slidably installed in the insertion holes. The sliding rod 17 is slidably arranged in the chutes. An elastic strip 18 is fixedly installed between the sliding rod 17 and the side wall of the insertion holes. The sliding rod 17 is clamped by the side walls of the chutes, and under the action of the elastic strip 18, the sliding rod 17 is always located in the chutes. Therefore, the angle of the sealing plate 11 can be restricted by the rectangular sliding rod 17 and the insertion holes, preventing the sealing plate 11 from rotating, which plays a role in ensuring that the sealing plate 11 can block the sleeve 10.

[0051] An elastic member 19 is installed between the side wall of the cavity and the sliding rod 17. When the sliding rod 17 is not subjected to the pressure applied by the heat conducting rod 6, the elastic member 19 is in a freely extended state. At this time, under the action of the elastic member 19, the sealing plate 11 is located at one end of the sleeve 10 away from the cavity. When the heat conducting rod 6 applies pressure to the sealing plate 11, the elastic member 19 contracts, and the sealing plate 11 moves along the sleeve 10.

[0052] As Figure 4 shown, a diversion cavity 20 is provided on the sleeve 10, air holes 21 are evenly provided on the side wall of the diversion cavity 20, the elastic member 19 is an elastic airbag, and the output end of the elastic airbag extends into the diversion cavity 20.

[0053] During the process that the heat conducting rod 6 pushes the sealing plate 11 to move, the elastic airbag is squeezed. At this time, the gas in the elastic airbag is discharged into the diversion cavity 20 and discharged through the air holes 21 on the side wall of the diversion cavity 20. The gas discharged from the diversion cavity 20 impacts the heat conducting rod 6 inserted into the sleeve 10. Since the inner wall of the sleeve 10 is frustum-shaped, there is a gap between the heat conducting rod 6 and the inner side wall of the sleeve 10. Therefore, after the gas discharged from the air hole 21 contacts the heat conducting rod 6 and absorbs heat, it will flow into the cavity, and then the heat of the heat conducting rod 6 can be evenly and quickly transferred to the heat conducting plate 9, enabling the temperature sensor 8 to timely detect the real-time temperature of the power fitting with abnormal temperature, playing a role in improving the detection efficiency.

[0054] As Figure 5 shown, a magnet 22 is fixedly installed on the inner side wall of the elastic corrugated pipe 5 on the side far from the heat conducting pipe 4. The magnets 22 at symmetric positions on the two detection mechanisms attract each other; since the two detection mechanisms are symmetrically arranged and the magnets 22 in the adjacent corresponding elastic corrugated pipes 5 on the two shells 3 attract each other, when the shell 3 is clamped on both sides of the power fitting, the two magnets 22 symmetrically distributed on both sides of the power fitting attract each other. At this time, the pressure between the elastic corrugated pipe 5 and the power fitting is increased, that is, the friction force is increased. Therefore, it can prevent the elastic corrugated pipe 5 from generating heat due to friction on the surface of the power fitting, further improving the detection accuracy.

[0055] As Figure 4 shown, an elastic sheet 23 is fixedly installed in the heat conducting pipe 4, and the heat conducting rod 6 is fixedly inserted on the elastic sheet 23. Therefore, during the process that the first shape memory alloy wire 7 pushes the heat conducting rod 6 to move, it can prevent the heat conducting rod 6 from contacting the heat conducting pipe 4, and further prevent the heat generated by the mutual friction between the heat conducting pipe 4 and the heat conducting rod 6 from affecting the detection result, improving the detection accuracy.

[0056] As Figure 5 shown, ammonia gas is filled in the elastic corrugated pipe 5; when heat is transferred to the elastic corrugated pipe 5, the ammonia gas is also heated. At this time, the ammonia gas expands. Since the elastic corrugated pipe 5 has the characteristic of being able to stretch unidirectionally, when the ammonia gas expands, it can make the elastic corrugated pipe 5 have a tendency to stretch, further increasing the pressure between the elastic corrugated pipe 5 and the power fitting, improving the fixing effect on the elastic corrugated pipe 5, and being able to prevent the elastic corrugated pipe 5 from shaking during the detection process, playing a role in improving the stability of the elastic corrugated pipe 5.

[0057] AsFigure 5 , Figure 6 As shown in Figure 6 , an elastic sleeve 24 is fixedly installed outside the elastic corrugated pipe 5. The ratio of the length of the elastic sleeve 24 to the length of the elastic corrugated pipe 5 is 1.1 - 1.2. Therefore, the elastic sleeve 24 protrudes from the outside of the elastic corrugated pipe 5. And during installation, the end faces of the corresponding elastic corrugated pipes 5 on the two shells 3 are in a parallel state. Thus, the elastic sleeve 24 will be attached to the surface of the electrical fitting, and the elastic sleeve 24 is extruded and deformed. The end face of the elastic sleeve 24 away from the shell 3 is evenly provided with negative pressure grooves 25; multiple negative pressure grooves 25 on the same elastic sleeve 24 communicate with each other; when the elastic sleeve 24 is extruded, the gas in the negative pressure grooves 25 is extruded. Therefore, under the action of negative pressure, the elastic sleeve 24 will be tightly adsorbed on the surface of the electrical fitting, further improving the stability of the elastic corrugated pipe 5.

[0058] A conduit 26 extending into the negative pressure groove 25 is inserted on the bottom wall of the heat conduction pipe 4. During the process of the heat conduction rod 6 extending out of the heat conduction pipe 4, the inside of the heat conduction pipe 4 is in a negative pressure state. Therefore, the heat conduction pipe 4 sucks air from the negative pressure groove 25 through the conduit 26, further strengthening the negative pressure intensity of the negative pressure groove 25, improving the adsorption effect of the elastic sleeve 24, playing a role in improving the stability of the elastic corrugated pipe 5. At the same time, since the elastic sleeve 24 can deform, it plays a role in ensuring that the heat conduction rod 6 can extend out of the heat conduction pipe 4 in time.

[0059] The above is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An electric hardware temperature measuring device, comprising a bracket (1), wherein both ends of the bracket (1) are provided with clamps (2); Features: The bracket (1) is symmetrically provided with a detection mechanism; The detection mechanism comprises a shell (3), a heat conducting pipe (4) is evenly inserted on the side wall of the shell (3), an elastic bellows (5) is fixedly installed at one end of the heat conducting pipe (4) away from the shell (3), and the elastic bellows (5) is made of a metal material, one end of the heat conducting pipe (4) located inside the shell (3) is open, a heat conducting rod (6) is movably inserted in the heat conducting pipe (4), and a first memory alloy wire (7) is installed between the heat conducting rod (6) and the inner end surface of the heat conducting pipe (4); The housing (3) is provided with a temperature sensor (8), a control mechanism and a heat conducting plate (9); the control mechanism is used to control the operation of the temperature sensor (8); the temperature sensor (8) is used to detect the temperature of the heat conducting plate (9); and the heat conducting rod (6) cooperates with the heat conducting plate (9); The heat conducting plate (9) is provided with a cavity, and a sleeve (10) corresponding to the heat conducting rod (6) is inserted on the side wall of the cavity, and the inner wall of the sleeve (10) is truncated cone-shaped; a sealing plate (11) is movably arranged in the sleeve (10), and the sealing plate (11) is used to seal the sleeve (10), and a driving mechanism cooperating with the sealing plate (11) is arranged in the sleeve (10).

2. The temperature measuring device for electric power fittings according to claim 1, characterized in that: The control mechanism comprises a switch (12) fixedly mounted on the inner wall of the housing (3) close to the heat-conducting rod (6), and the switch (12) is connected in series with the temperature sensor (8); an elastic membrane (13) is fixedly mounted inside the housing (3), and a pressure plate (14) is embedded on the elastic membrane (13); small holes matching the heat-conducting rod (6) are evenly formed on the pressure plate (14), and a retaining ring (15) matching the heat-conducting rod (6) is fixedly sleeved on the heat-conducting rod (6), and the ratio of the outer diameter of the retaining ring (15) to the diameter of the small hole is 1.5-2.

3. The temperature measuring device for electric power fittings according to claim 2, characterized in that: The heat conducting plate (9) and the sleeve (10) are together covered with a heat-insulating sleeve (16), the temperature sensor (8) is embedded in the heat-insulating sleeve (16), and the heat-insulating sleeve (16) is evenly provided with holes, which correspond one to one with the sleeve (10).

4. The temperature measuring device for electric power fittings according to claim 3 is characterized in that: The driving mechanism comprises a slide groove symmetrically provided on the inner wall of the sleeve (10), the slide groove being trapezoidal, a rectangular plug hole symmetrically provided on the side wall of the sealing plate (11), a rectangular slide rod (17) being slidably installed in the plug hole, the slide rod (17) being slidably arranged in the slide groove, and an elastic strip (18) being fixedly installed between the slide rod (17) and the side wall of the plug hole; An elastic member (19) is installed between the side wall of the cavity and the sliding rod (17).

5. The temperature measuring device for electric power fittings according to claim 4, characterized in that: The sleeve (10) is provided with a flow guiding cavity (20), and air holes (21) are evenly provided on the side wall of the flow guiding cavity (20). The elastic member (19) is an elastic air bag, and the output end of the elastic air bag extends into the flow guiding cavity (20).

6. The temperature measuring device for electric power fittings according to claim 5, characterized in that: A magnet (22) is fixedly mounted on the inner wall of the elastic bellows (5) on the side away from the heat conducting tube (4), and the magnets (22) located at symmetrical positions on the two detection mechanisms attract each other.

7. The temperature measuring device for electric power fittings according to claim 6, characterized in that: An elastic sheet (23) is fixedly installed in the heat conduction pipe (4), and the heat conduction rod (6) is fixedly inserted on the elastic sheet (23).

8. The temperature measuring device for electric power fittings according to claim 7, characterized in that: The elastic bellows (5) is filled with ammonia gas.

9. The temperature measuring device for electric power fittings according to claim 8, characterized in that: An elastic sleeve (24) is fixedly mounted on the outside of the elastic bellows (5), the ratio of the length of the elastic sleeve (24) to the length of the elastic bellows (5) is 1.1-1.2, and negative pressure grooves (25) are evenly formed on the end surface of the elastic sleeve (24) away from the housing (3).

10. The temperature measuring device for electric power fittings according to claim 9, characterized in that: A conduit (26) extending into the negative pressure groove (25) is inserted on the bottom wall of the heat conducting pipe (4).

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