A quick-install overheating sensor

Abstract

The present invention provides a quick-install overheating prevention sensor, which relates to the technical field of temperature sensors and comprises: a fixed threaded sleeve, on which a connecting threaded sleeve is provided, and the connecting threaded sleeve is connected to the fixed threaded sleeve by means of threads, and the chamfer at the bottom of the connecting threaded sleeve cooperates with the chamfer of a limiting column, and at the same time the limiting column drives an adjusting piece to expand outward, and the three adjusting pieces are in an umbrella-shaped open state, which can effectively ensure the stability of the connection between the fixed threaded sleeve and the detection equipment, so that the connection will not loosen due to overheating, thereby improving the reliability of the temperature sensor during operation, and solving the problem in the prior art that the temperature sensor is prone to loosening due to overheating when in use due to the continuation of the traditional threaded connection and fixing technology, and the loosening phenomenon will still occur despite the auxiliary tightening effect of the pad, thereby reducing the operating reliability of the temperature sensor.

Description

Technical Field

[0001] The invention relates to the technical field of temperature sensors, and in particular to a quick-installed overheating prevention sensor. Background Art

[0002] The temperature sensor is a thermistor or probe. Its principle is that the resistance value decreases rapidly as the temperature rises. Under a certain measurement power, the resistance value of the NTC thermistor decreases rapidly as the temperature rises. Using this characteristic, the NTC thermistor can be used to determine the corresponding temperature by measuring its resistance value, thereby achieving the purpose of detecting and controlling the temperature.

[0003] When the temperature sensor in the prior art is in use, due to the continued use of traditional threaded connection and fixing technology, the threaded connection is prone to loosening due to overheating during long-term installation and use. Although there is an auxiliary tightening effect of the pad, loosening will still occur, thereby reducing the reliability of the temperature sensor during operation. In addition, part of the heat will be transferred to the junction box through the protective tube, causing it to be affected by overheating, and the accuracy of the data cannot be effectively guaranteed. Summary of the invention

[0004] The disclosed embodiment relates to a quick-install overheating prevention sensor, in which a connecting threaded sleeve is located between three limiting columns. The chamfer at the bottom of the connecting threaded sleeve cooperates with the chamfer of the limiting column, so that the limiting column can simultaneously drive the adjusting piece to expand outward. The three adjusting pieces are in an umbrella-like open state, which can effectively ensure the stability of the connection between the fixed threaded sleeve and the detection equipment, thereby preventing the connection from loosening due to overheating, thereby improving the reliability of the temperature sensor during operation.

[0005] In a first aspect of the present disclosure, a quick-install overheating prevention sensor is provided, which specifically includes: a fixed threaded sleeve, a connecting threaded sleeve is provided on the fixed threaded sleeve, and the connecting threaded sleeve is connected to the fixed threaded sleeve by means of a thread; a cold end kit is provided on the top of the connecting threaded sleeve; an internal kit is provided in the cold end kit; a junction box is provided on the top of the cold end kit; a junction board is provided in the junction box; a connecting lead is provided at the bottom of the junction board; a platinum thermal resistor element is provided at the bottom of the connecting lead.

[0006] In at least some embodiments, an outer protective tube is provided at the bottom of the fixed threaded ferrule, a first adjusting nut is provided at the top of the fixed threaded ferrule, the fixed threaded ferrule is a cylindrical cavity structure, and three mounting grooves are provided on the side wall of the fixed threaded ferrule, the mounting grooves are located at the connection between the fixed threaded ferrule and the first adjusting nut, and the three mounting grooves are distributed in a circular array, and adjustment plates are provided in the three mounting grooves.

[0007] In at least some embodiments, a support plate is fixedly installed in the installation groove, and the support plate is located on the inner side of the adjustment plate. The support plate begins to have a limiting through groove, and the limiting through groove has a waist-shaped structure.

[0008] In at least some embodiments, the adjusting plate is rotatably connected to the fixed threaded sleeve via a pin shaft, and a limit column is provided on one side of the adjusting plate, a chamfer is provided on the end of the limit column, and a tension spring is mounted on the limit column, the limit column passes through the limit slot, and the two ends of the tension spring are respectively connected to the adjusting plate and the support plate.

[0009] In at least some embodiments, the bottom end of the connecting thread ferrule is provided with a chamfer, and an inner protective tube is provided at the bottom of the connecting thread ferrule, the inner protective tube is slidably inserted into the outer protective tube, and the platinum thermal resistor element is arranged in the inner protective tube, a second adjusting nut is provided on the top of the connecting thread ferrule, a rotating ring is rotatably installed on the connecting thread ferrule, and the rotating ring is located at the connection between the connecting thread ferrule and the second adjusting nut, and a lower pressure ring is mounted on the connecting thread ferrule.

[0010] In at least some embodiments, three connecting frames are provided on the outer circumference of the rotating ring, and the three connecting frames are distributed in a ring array. Support rings are provided at the ends of the connecting frames, and the support rings are located above the lower pressure ring.

[0011] In at least some embodiments, three sliding rods are provided on the top of the lower pressure ring, and the sliding rods correspond to the positions of the support ring. A compression spring is mounted on the sliding rod, and a baffle is provided on the top of the sliding rod. The sliding rod slides through the support ring, and the compression spring is supported between the lower pressure ring and the support ring.

[0012] In at least some embodiments, the cold end kit includes a fixed tube, a first telescopic tube, a second telescopic tube, a limiting slide groove, a convex shaft and an annular groove, the bottom end of the fixed tube is connected to the second adjusting nut, and the first telescopic tube is provided in the fixed tube, the second telescopic tube is provided in the first telescopic tube, and the top end of the second telescopic tube is connected to the junction box, the first telescopic tube and the second telescopic tube are provided with limiting slide grooves on the outer circumferences, and the limiting slide grooves are distributed in a serpentine state, the fixed tube and the first telescopic tube are provided with convex shafts on the inner circumferences near the top, and the convex shaft is slidably connected to the limiting slide groove, and the fixed tube is provided with an annular groove on the inner circumference near the bottom.

[0013] In at least some embodiments, the internal kit includes a first connecting tube, a second connecting tube, a third connecting tube, a guide groove, a guide column, a sliding column and a fixed column. The second connecting tube is provided in the first connecting tube, the third connecting tube is provided in the second connecting tube, and the connecting lead passes through the first connecting tube, the second connecting tube and the third connecting tube at the same time. The side walls of the first connecting tube and the second connecting tube are each provided with two guide grooves, and the two guide grooves are distributed in a symmetrical manner. The second connecting tube and the third connecting tube are each provided with two guide columns on the outer peripheral surface near the bottom end, and the guide columns are slidably connected to the guide grooves. The first connecting tube is provided with two sliding columns on the outer peripheral surface near the bottom end, and the third connecting tube is provided with two fixed columns on the outer peripheral surface near the top end.

[0014] In at least some embodiments, when the internal sleeve is in a connected state with the cold end sleeve, the third connecting tube is connected to the second telescopic tube via a fixed column, and the first connecting tube is slidably connected to the annular groove of the fixed tube via a sliding column.

[0015] The present invention provides a quick-install overheating prevention sensor, which has the following beneficial effects:

[0016] In the present invention, when the connecting threaded sleeve and the fixed threaded sleeve are in a connected state, the connecting threaded sleeve is located between three limit columns. By utilizing the chamfer at the bottom of the connecting threaded sleeve and the chamfer of the limit column to cooperate with each other, the limit column can simultaneously drive the adjusting piece to expand outward. By having the three adjusting pieces open in an umbrella-like state, the stability of the connection between the fixed threaded sleeve and the detection equipment can be effectively guaranteed, so that the connection will not loosen due to overheating, thereby improving the reliability of the temperature sensor during operation.

[0017] In addition, by driving the lower pressure ring to adjust downward through the rotating ring, the sliding rod and the supporting ring cooperate with each other, and the rebound effect of the compression spring is utilized, so that the lower pressure ring and the equipment to be tested can be stably supported to avoid overheating and loosening of the threaded connection, further ensuring the stability of the installation of the temperature sensor, which has a simple structure and convenient installation operation.

[0018] In addition, when the internal kit is in a connected state with the cold end kit, the third connecting tube is connected to the second telescopic tube through a fixed column, and the first connecting tube is slidably connected to the annular groove of the fixed tube through a sliding column. Through the double-layer multi-stage telescopic structure of the internal kit and the cold end kit, the telescopic state is more stable, while ensuring the air tightness of the external structure, and can greatly increase the cold end length of the temperature sensor, effectively avoiding the external junction box from being affected by overheating, and ensuring its normal and safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached picture:

[0022] Figure 1 A schematic diagram showing the overall axial viewing angle of the present application;

[0023] Figure 2 The structure disassembly diagram of the fixed threaded ferrule and the connecting threaded ferrule of the present application is shown;

[0024] Figure 3 A structural disassembly diagram of a fixed threaded ferrule of the present application is shown;

[0025] Figure 4 This application shows Figure 3 The enlarged structural diagram of the middle A part;

[0026] Figure 5 The structural disassembly diagram of the connecting threaded ferrule, the cold end kit, and the platinum thermal resistor element of the present application is shown;

[0027] Figure 6 The structural disassembly diagram of the connecting threaded sleeve of the present application is shown;

[0028] Figure 7 The structural disassembly diagram of the internal kit, the junction box and the junction board of the present application is shown;

[0029] Figure 8 The structural disassembly diagram of the cold end kit and the internal kit of the present application is shown.

[0030] List of reference numerals:

[0031] 1. Fixed threaded ferrule; 101. Outer protective tube; 102. First adjusting nut; 103. Mounting slot; 1031. Support plate; 1032. Limiting slot; 104. Adjusting plate; 1041. Limiting column; 1042. Tension spring; 2. Connecting threaded ferrule; 201. Inner protective tube; 202. Second adjusting nut; 203. Rotating ring; 2031. Connecting frame; 2032. Support ring; 204. Lower pressure ring; 2041. Sliding rod; 2042. Compression spring ; 2043, baffle; 3, cold end kit; 301, fixed tube; 302, first telescopic tube; 303, second telescopic tube; 304, limiting slide groove; 305, convex shaft; 306, annular groove; 4, internal kit; 401, first connecting tube; 402, second connecting tube; 403, third connecting tube; 404, guide groove; 405, guide column; 406, sliding column; 407, fixed column; 5, junction box; 6, junction board; 7, connecting lead; 8, platinum thermal resistor element. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figures 1 to 8 :

[0034] The present invention proposes a quick-installation overheating prevention sensor, comprising: a fixed threaded sleeve 1, which is fixedly installed on a device that needs to measure temperature by means of threads; a connecting threaded sleeve 2 is provided on the fixed threaded sleeve 1, and the connecting threaded sleeve 2 is connected to the fixed threaded sleeve 1 by means of threads; a cold end kit 3 is provided on the top of the connecting threaded sleeve 2; an internal kit 4 is provided in the cold end kit 3; a junction box 5 is provided on the top of the cold end kit 3; a junction board 6 is provided in the junction box 5; a connecting lead 7 is provided at the bottom of the junction board 6; a platinum thermal resistor element 8 is provided at the bottom of the connecting lead 7.

[0035] In the present disclosure, Figures 2 to 4 As shown, an outer protective tube 101 is provided at the bottom of the fixed threaded ferrule 1, a first adjusting nut 102 is provided at the top of the fixed threaded ferrule 1, the fixed threaded ferrule 1 is a cylindrical cavity structure, and three mounting grooves 103 are provided on the side wall of the fixed threaded ferrule 1, the mounting grooves 103 are located at the connection position of the fixed threaded ferrule 1 and the first adjusting nut 102, and the three mounting grooves 103 are distributed in a ring array, and adjusting sheets 104 are provided in the three mounting grooves 103;

[0036] A support plate 1031 is fixedly installed in the installation groove 103, and the support plate 1031 is located inside the adjustment plate 104. The support plate 1031 begins to have a limiting through groove 1032, and the limiting through groove 1032 is in a waist-shaped structure;

[0037] The adjusting piece 104 is rotatably connected to the fixed threaded sleeve 1 through a pin shaft, and a limiting column 1041 is provided on one side of the adjusting piece 104, and a chamfer is provided at the end of the limiting column 1041, and a tension spring 1042 is sleeved on the limiting column 1041, and the limiting column 1041 passes through the limiting groove 1032, and the two ends of the tension spring 1042 are respectively connected to the adjusting piece 104 and the support plate 1031;

[0038] A chamfer is provided at the bottom end of the connecting threaded sleeve 2, and an inner protective tube 201 is provided at the bottom of the connecting threaded sleeve 2. The inner protective tube 201 is slidably inserted into the outer protective tube 101, and the platinum thermal resistor element 8 is arranged in the inner protective tube 201. A second adjusting nut 202 is provided at the top of the connecting threaded sleeve 2. When the connecting threaded sleeve 2 and the fixed threaded sleeve 1 are in a connected state, the connecting threaded sleeve 2 is located between three limiting columns 1041. By utilizing the chamfer at the bottom of the connecting threaded sleeve 2 and the chamfer of the limiting column 1041 to cooperate with each other, the limiting column 1041 can simultaneously drive the adjusting piece 104 to expand outward. By having the three adjusting pieces 104 be in an umbrella-shaped open state, the stability of the connection between the fixed threaded sleeve 1 and the detection equipment can be effectively guaranteed.

[0039] In the present disclosure, Figure 5 and Figure 6 As shown, a rotating ring 203 is rotatably mounted on the connecting threaded sleeve 2, and the rotating ring 203 is located at the connection position between the connecting threaded sleeve 2 and the second adjusting nut 202, and a lower pressing ring 204 is sleeved on the connecting threaded sleeve 2;

[0040] Three connecting frames 2031 are arranged on the outer circumference of the rotating ring 203, and the three connecting frames 2031 are distributed in a circular array. A supporting ring 2032 is arranged at the end of the connecting frame 2031, and the supporting ring 2032 is located above the lower pressure ring 204;

[0041] Three sliding rods 2041 are provided at the top of the lower pressure ring 204, and the positions of the sliding rods 2041 and the support ring 2032 correspond. A compression spring 2042 is mounted on the sliding rod 2041, and a baffle 2043 is provided on the top of the sliding rod 2041. The sliding rod 2041 slides through the support ring 2032, and the compression spring 2042 is supported between the lower pressure ring 204 and the support ring 2032. During the connection process of the above-mentioned connecting threaded sleeve 2 and the fixed threaded sleeve 1, the lower pressure ring 204 is driven to adjust downward by the rotating ring 203. The sliding rod 2041 and the support ring 2032 cooperate with each other, and the rebound effect of the compression spring 2042 can be used to stably support the lower pressure ring 204 and the equipment to be tested, thereby avoiding overheating and loosening at the threaded connection.

[0042] Embodiment 2, based on embodiment 1, as Figure 7 and Figure 8As shown, the cold end kit 3 includes a fixed tube 301, a first telescopic tube 302, a second telescopic tube 303, a limiting slide groove 304, a convex shaft 305 and an annular groove 306, the bottom end of the fixed tube 301 is connected to the second adjusting nut 202, and the first telescopic tube 302 is arranged in the fixed tube 301, the second telescopic tube 303 is arranged in the first telescopic tube 302, and the top end of the second telescopic tube 303 is connected to the junction box 5, the outer circumferences of the first telescopic tube 302 and the second telescopic tube 303 are provided with limiting slide grooves 304, and the limiting slide grooves 304 are distributed in a serpentine state, the inner circumferences of the fixed tube 301 and the first telescopic tube 302 near the top are provided with convex shafts 305, and the convex shafts 305 are slidably connected with the limiting slide grooves 304, and the inner circumference of the fixed tube 301 near the bottom is provided with an annular groove 306;

[0043] The internal kit 4 includes a first connecting tube 401, a second connecting tube 402, a third connecting tube 403, a guide groove 404, a guide column 405, a sliding column 406 and a fixed column 407. The first connecting tube 401 is provided with a second connecting tube 402, the second connecting tube 402 is provided with a third connecting tube 403, and the connecting lead 7 passes through the first connecting tube 401, the second connecting tube 402 and the third connecting tube 403 at the same time. The side walls of the first connecting tube 401 and the second connecting tube 402 are each provided with two guide grooves 404, and the two guide grooves 404 are distributed in a symmetrical manner. The second connecting tube 402 and the third connecting tube 403 are each provided with two guide columns 405 on the outer circumference near the bottom end, and the guide columns 405 are slidably connected to the guide grooves 404. The first connecting tube 401 is provided with two sliding columns 406 on the outer circumference near the bottom end, and the third connecting tube 403 is provided with two fixed columns 407 on the outer circumference near the top end.

[0044] When the internal kit 4 is in a connected state with the cold end kit 3, the third connecting tube 403 is connected to the second telescopic tube 303 through the fixed column 407, and the first connecting tube 401 is slidably connected to the annular groove 306 of the fixed tube 301 through the sliding column 406. Through the double-layer multi-stage telescopic structure of the internal kit 4 and the cold end kit 3, the telescopic state is more stable, while ensuring the air tightness of the external structure, and can greatly increase the cold end length of the temperature sensor.

[0045] The working principle of this embodiment: during use, the fixed threaded ferrule 1 is fixedly installed on the equipment that needs to measure the temperature by means of threads. When the connecting threaded ferrule 2 is in a connected state with the fixed threaded ferrule 1, the connecting threaded ferrule 2 is located between the three limiting columns 1041. By using the chamfer at the bottom of the connecting threaded ferrule 2 and the chamfer of the limiting column 1041 to cooperate with each other, the limiting column 1041 can simultaneously drive the adjusting piece 104 to expand outward. By the three adjusting pieces 104 being in an umbrella-like open state, the stability of the connection between the fixed threaded ferrule 1 and the detection equipment can be effectively guaranteed; the lower pressure ring 204 is driven downward by the rotating ring 203 to adjust, and the sliding rod 20 41 and the support ring 2032 cooperate with each other, and the rebound effect of the compression spring 2042 is utilized to stably support the lower pressure ring 204 and the device to be tested, thereby avoiding overheating and loosening at the threaded connection; when the internal kit 4 and the cold end kit 3 are in a connected state, the third connecting tube 403 is connected to the second telescopic tube 303 through the fixed column 407, and the first connecting tube 401 is slidably connected to the annular groove 306 of the fixed tube 301 through the sliding column 406. Through the double-layer multi-stage telescopic structure of the internal kit 4 and the cold end kit 3, the telescopic state is more stable, while ensuring the airtightness of the external structure, and can greatly increase the cold end length of the temperature sensor.

[0046] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A quick-install overheating protection sensor, characterized in that: include: A fixed threaded ferrule, wherein a connecting threaded ferrule is provided on the fixed threaded ferrule, and the connecting threaded ferrule is connected to the fixed threaded ferrule by means of threads; a cold end kit is provided on the top of the connecting threaded ferrule; an internal kit is provided in the cold end kit; a junction box is provided on the top of the cold end kit; a terminal board is provided in the terminal box; a connecting lead is provided at the bottom of the terminal board; a platinum thermal resistor element is provided at the bottom of the connecting lead; an outer protective tube is provided at the bottom of the fixed threaded ferrule, a first adjusting nut is provided at the top of the fixed threaded ferrule, the fixed threaded ferrule is a cylindrical cavity structure, and three mounting grooves are provided on the side wall of the fixed threaded ferrule, the mounting grooves are located at the connection position of the fixed threaded ferrule and the first adjusting nut, and the three mounting grooves are distributed in a ring array, and adjusting sheets are provided in the three mounting grooves; A support plate is fixedly installed in the installation groove, and the support plate is located on the inner side of the adjustment plate. A limiting through groove is formed at the beginning of the support plate, and the limiting through groove is in a waist-shaped structure; The adjusting piece is rotatably connected with the fixed threaded sleeve through a pin shaft, and a limiting column is provided on one side of the adjusting piece, the end of the limiting column is provided with a chamfer, and a tension spring is sleeved on the limiting column, the limiting column runs through the limiting slot, and the two ends of the tension spring are respectively connected to the adjusting piece and the support plate; The bottom end of the connecting thread ferrule is provided with a chamfer, and the bottom of the connecting thread ferrule is provided with an inner protection tube, the inner protection tube is slidably inserted into the outer protection tube, and the platinum thermal resistance element is arranged in the inner protection tube, a second adjusting nut is provided on the top of the connecting thread ferrule, a rotating ring is rotatably installed on the connecting thread ferrule, and the rotating ring is located at the connection position of the connecting thread ferrule and the second adjusting nut, and a lower pressure ring is sleeved on the connecting thread ferrule; The outer circumference of the rotating ring is provided with three connecting frames, and the three connecting frames are distributed in a circular array. The ends of the connecting frames are provided with support rings, and the support rings are located above the lower pressure ring; The top of the lower pressure ring is provided with three sliding rods, and the sliding rods correspond to the positions of the support rings, a compression spring is mounted on the sliding rod, a baffle is provided on the top of the sliding rod, the sliding rod slides through the support ring, and the compression spring is supported between the lower pressure ring and the support ring; the cold end kit comprises a fixed tube, a first telescopic tube, a second telescopic tube, a limiting slide groove, a convex shaft and an annular groove, the bottom end of the fixed tube is connected with the second adjusting nut, and the fixed tube is provided with a first telescopic tube, the first telescopic tube is provided with a second telescopic tube, and the top end of the second telescopic tube is connected with the junction box, the outer circumferences of the first telescopic tube and the second telescopic tube are provided with limiting slide grooves, and the limiting slide grooves are distributed in a serpentine state, the inner circumferences of the fixed tube and the first telescopic tube near the top are provided with convex shafts, and the convex shaft is slidably connected with the limiting slide grooves, and the inner circumference of the fixed tube near the bottom end is provided with an annular groove; The internal kit includes a first connecting tube, a second connecting tube, a third connecting tube, a guide groove, a guide column, a sliding column and a fixed column. The second connecting tube is provided in the first connecting tube, the third connecting tube is provided in the second connecting tube, and the connecting lead passes through the first connecting tube, the second connecting tube and the third connecting tube at the same time. The side walls of the first connecting tube and the second connecting tube are each provided with two guide grooves, and the two guide grooves are distributed in a symmetrical manner. The second connecting tube and the third connecting tube are each provided with two guide columns on the outer circumferential surface near the bottom end, and the guide columns are slidably connected to the guide grooves. The first connecting tube is provided with two sliding columns on the outer circumferential surface near the bottom end, and the third connecting tube is provided with two fixed columns on the outer circumferential surface near the top end; when the internal kit is in a connected state with the cold end kit, the third connecting tube is connected to the second telescopic tube through the fixed column, and the first connecting tube is slidably connected to the annular groove of the fixed tube through the sliding column.

Images