Foldable inductor

Abstract

A foldable inductor comprises a left device, a bendable pipe and a right device which are connected in sequence. The structure of the right device is the same as that of the left device, the right device comprises an arc coil and a confluence plate, the two ends of the arc coil are connected with the bendable pipe and the vertical pipe, the vertical pipe is inserted into the Haff clamp, the Haff clamp is connected with the confluence plate, and the confluence plate is connected with the connecting plate. Then the bendable pipe is in an unfolded state or a folded state, then the to-be-machined part is close to the arc coil, then the connecting plate is powered on, and when the current reaches the arc coil and the bendable pipe, the surface of the to-be-machined part is heated; the shape of the arc coil is set according to the shape of the to-be-machined part, so that the whole arc coil can play a role in the to-be-machined part, and the utilization rate is high; and the shape of the inductor can be changed only by changing the shape of the bendable pipe, so that the use is convenient. Therefore, the design is high in utilization rate and convenient to use.

Description

Technical Field

[0001] The invention relates to an inductor, belonging to the field of induction hardening of cylindrical and semi-cylindrical parts, and in particular to a foldable inductor. Background Art

[0002] Induction hardening is a new type of metal parts strengthening treatment technology, which uses electromagnetic induction to generate eddy currents in metal parts to heat the parts, and then quickly cools the metal parts to form a high-hardness steel layer on the surface of the metal parts. Induction hardening has the advantages of fast heating speed, fast quenching speed, precise control, and a wide range of applications. It is widely used in the heat treatment of metal parts in the fields of automobiles, machinery manufacturing, aviation, etc.

[0003] A Chinese patent application with application number 201821551919.X and application date September 21, 2018 discloses a layered multi-turn inductor for high-frequency induction hardening, including a body, the body is provided with a slot, the inductor body is clamped in the slot, the left end of the inductor body is fixedly connected with a fixing seat, the fixing seat is provided with a positioning hole, the positioning hole is clamped with a positioning seat, the positioning seat is provided with a second groove, the second groove is contact-connected with a spring, the left end of the spring is contact-connected with a positioning rod, the surface of the positioning rod is fixedly connected with a pull rod, the left end of the positioning rod is clamped with a fixing seat, the body is provided with a first groove, the inner wall of the first groove is fixedly connected with a connecting rod, although this design can perform induction hardening on parts through the inductor, it still has the following defects: The coil of the inductor of this design is circular, and has better adaptability to cylindrical parts; however, when a semi-cylindrical part is induction hardened, half of the coil performs induction hardening on the semi-cylindrical part, and the other half of the coil does not play a role, but the half of the coil is still powered on and working, so there is a problem of low utilization rate in the prior art.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects and problems of low utilization rate in the prior art and to provide a foldable sensor with higher utilization rate.

[0006] To achieve the above objectives, the technical solution of the present invention is: A foldable sensor, the sensor comprising a left device, a right device and a bendable tube; The bendable tube comprises a left connecting portion, a bending portion and a right connecting portion connected in sequence, and the movement range of the right connecting portion is close to the left connecting portion and away from the left connecting portion; The right connecting part is connected to one end of the right device, and the left connecting part is connected to one end of the left device, and the structures of the left device and the right device are the same; the right device includes an arc coil and a busbar, one end of the arc coil is connected to one end of the left connecting part or the right connecting part, and the end of the arc coil away from the left connecting part or the right connecting part is connected to one end of the vertical pipe, and the middle part of the vertical pipe is inserted into the groove of the half clamp, and the half clamp is provided with fixing holes at the positions at both ends of the groove, and one end of the screw is inserted into the fixing hole; the end of the screw away from the fixing hole is inserted into the screw hole of the busbar, and the end of the busbar away from the screw hole is vertically connected to one end of the connecting plate.

[0007] The side of the busbar away from the half clamp is connected to the side of the insulating sheet, and the outer surface of the busbar is wrapped with insulating cloth.

[0008] The insulating sheet is a mica sheet, and the insulating cloth is a yellow wax cloth.

[0009] One end of the vertical pipe away from the arc coil is vertically connected to a water inlet pipe, and one end of the water inlet pipe away from the vertical pipe is provided with a pipe joint; the other end of the vertical pipe is connected to one end of the arc coil, and a plurality of water spray holes are evenly distributed on the arc coil.

[0010] The inner side of the circular arc coil is a right-angled portion, and the outer side of the circular arc coil is a water spraying portion. The water spraying portion includes an inclined surface, and a plurality of water spraying holes are evenly distributed in the middle of the inclined surface.

[0011] There are two inclined surfaces, which are symmetrically distributed along the water spraying portion, one end of each inclined surface is connected to one end of the connecting surface, and the other end of each inclined surface is connected to one end of the right-angle portion.

[0012] The included angle between the inclined plane and the vertical plane is forty-five degrees.

[0013] The half clamp comprises a left fixing plate and a right fixing plate; one end of the left fixing plate is connected to the top of one end of the groove, and the top of the other end of the groove is connected to one end of the right fixing plate.

[0014] The left fixing plate is provided with two fixing holes, and the right fixing plate is provided with two fixing holes.

[0015] The connection plate is evenly provided with three connection holes, and the positions of the connection holes match the connectors of the sensing device.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In a foldable inductor of the present invention, the inductor comprises a left device, a bendable tube and a right device connected in sequence, the bendable tube comprises a left connecting part, a bend part and a right connecting part connected in sequence, the left connecting part is connected to the left device, the right connecting part is connected to the right device, the right device has the same structure as the left device, the right device comprises an arc coil and a busbar, the arc coil is connected to a vertical pipe, the vertical pipe is clamped in a half clamp, the half clamp is connected to the busbar, and the busbar is also connected to a connecting plate. When used, the shape of the part to be processed is first observed. If the part to be processed is a cylindrical part, the bend part is in an unfolded state, that is, the left connecting part, the bend part and the right connecting part are in a vertical or horizontal plane. At this time, the two arc coils and the bendable tube are combined into a circle, and then the cylindrical part is inserted into the circle, and there is a certain gap between the cylindrical part and the arc coil; if the part to be processed is a semi-cylindrical part, the bending part is folded, at this time, the bending part is bent, the left connecting part and the right connecting part are parallel, and then the semi-cylindrical part and the arc coil are brought close, and there is a certain gap between the semi-cylindrical part and the arc coil; then the connecting plate is energized, and the current flows to the busbar and the arc coil, and then the arc coil generates an induced current on the surface of the cylindrical part or the semi-cylindrical part, and the induced current generates heat so that the cylindrical part or the semi-cylindrical part completes the heating stage in induction quenching. The advantages of the present invention also include: First point: when the bendable tube is in the unfolded state, the arc coil is circular, so it can match with the surface of the cylindrical part; when the bendable tube is in the folded state, the arc coil is semicircular, so it can match with the surface of the semi-cylindrical part; the arc coil can perfectly fit the shape of the outer surface of the part, and the arc coil as a whole can perform the heating stage of the induction quenching on the part, so the utilization rate of the present invention is relatively high; Second point: the bendable tube can be adjusted to an unfolded state or a folded state to fit a cylindrical or semi-cylindrical part, so the present invention is easy to use; Third point: the arc coil and the vertical pipe are connected to the busbar through the half clamp. When the arc coil is damaged, the arc coil and the vertical pipe are removed from the half clamp and replaced with a new arc coil, without the need to repair the entire inductor and remove the weld, so the present invention is easy to repair; Fourth point: After the present invention is used, the bendable tube can be folded, so the volume of the sensor becomes smaller, which can save storage space; Therefore, the present invention has high utilization rate and is easy to use.

[0017] 2. In a foldable inductor of the present invention, the arc coil, the vertical pipe and the water inlet pipe are connected in sequence, and the arc coil also includes a water spray hole. When the arc coil is used for induction hardening of cylindrical or semi-cylindrical parts, water first flows into the arc coil from the water inlet pipe and the vertical pipe, and then the water is sprayed from the water spray hole. Then the water reaches the outer surface of the part to cool the outer surface of the part, so the cooling stage in induction hardening can be completed, and the parts after the heating stage do not need to be transferred and placed in the cooling pool, so the cooling efficiency is improved. Therefore, the cooling efficiency of the present invention is relatively high.

[0018] 3. In a foldable sensor of the present invention, the half clamp also includes a left fixing plate and a right fixing plate, the left fixing plate and the right fixing plate are evenly distributed with fixing holes, and the connecting plate is evenly distributed with three connecting holes. When used, the connecting plate is connected to the connector of the induction device through the connecting holes; when the screws are inserted into the fixing holes and the screw holes of the busbar in sequence, the screws will push the fixing holes toward the groove direction, so the screws will move the left fixing plate and the right fixing plate toward the groove direction, and the vertical pipe located in the groove can be clamped, thereby completing the fixing effect of the vertical pipe and the arc coil. Therefore, the fixing effect of the present invention is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 yes Figure 1 Schematic diagram of the structure of the bendable tube.

[0021] Figure 3 yes Figure 2 Front view of .

[0022] Figure 4 yes Figure 1 Schematic diagram of the structure of the device in the middle right.

[0023] Figure 5 yes Figure 4 Schematic diagram of the structure of the device on the middle left.

[0024] Figure 6 yes Figure 5 main view.

[0025] Figure 7 yes Figure 1 Schematic diagram of the structure of the medium arc coil.

[0026] Figure 8 yes Figure 7 Right view of .

[0027] Fig. 9 yes Figure 8 Schematic diagram of the structure of the middle water spray hole.

[0028] Fig.10 yes Figure 1 Schematic diagram of the structure of the middle manifold.

[0029] Fig.11 yes Fig.10 Right view of .

[0030] Fig.12 yes Figure 1 Schematic diagram of the structure of the middle half clamp.

[0031] Fig.13 yes Fig.12 Right view of .

[0032] Fig.14 yes Figure 6 Schematic diagram of the structure of the middle right fixing plate.

[0033] Fig.15 yes Figure 1 Schematic diagram of the structure of the middle pipe joint.

[0034] In the figure: left device 1, right device 2, arc coil 21, water spray hole 212, convergence plate 22, screw hole 221, right angle part 222, water spray part 223, inclined surface 224, connecting surface 225, vertical pipe 23, connecting plate 24, connecting hole 241, flexible tube 3, left connecting part 31, bending part 32, right connecting part 33, half clamp 4, groove 41, fixing hole 42, screw 43, left fixing plate 44, right fixing plate 45, insulating sheet 5, insulating cloth 6, water inlet pipe 7, pipe joint 71, cylindrical part 8, semi-cylindrical part 81. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] See also Figure 1 — Fig.15 , a foldable sensor, the sensor comprising a left device 1, a right device 2 and a bendable tube 3; The bendable tube 3 comprises a left connecting portion 31, a bending portion 32 and a right connecting portion 33 which are connected in sequence, and the movement range of the right connecting portion 33 is close to the left connecting portion 31 and away from the left connecting portion 31; The right connecting part 33 is connected to one end of the right device 2, and the left connecting part 31 is connected to one end of the left device 1, and the structures of the left device 1 and the right device 2 are the same; the right device 2 includes an arc coil 21 and a busbar 22, one end of the arc coil 21 is connected to one end of the left connecting part 31 or the right connecting part 33, and the end of the arc coil 21 away from the left connecting part 31 or the right connecting part 33 is connected to one end of the vertical pipe 23, and the middle part of the vertical pipe 23 is inserted into the groove 41 of the half clamp 4, and the half clamp 4 is provided with fixing holes 42 at the two ends of the groove 41, and one end of the screw 43 is inserted into the fixing hole 42; the end of the screw 43 away from the fixing hole 42 is inserted into the screw hole 221 of the busbar 22, and the end of the busbar 22 away from the screw hole 221 is vertically connected to one end of the connecting plate 24.

[0037] The side of the busbar 22 away from the half clamp 4 is connected to the side of the insulating sheet 5 , and the outer surface of the busbar 22 is wrapped with an insulating cloth 6 .

[0038] The insulating sheet 5 is a mica sheet, and the insulating cloth 6 is yellow wax cloth.

[0039] One end of the vertical pipe 23 away from the arc coil 21 is vertically connected to the water inlet pipe 7, and the end of the water inlet pipe 7 away from the vertical pipe 23 is provided with a pipe joint 71; the other end of the vertical pipe 23 is connected to one end of the circular arc coil 21, and a plurality of water spray holes 212 are evenly distributed on the circular arc coil 21.

[0040] The inner side of the circular arc coil 21 is a right angle portion 222 , and the outer side of the circular arc coil 21 is a water spraying portion 223 . The water spraying portion 223 includes an inclined surface 224 , and a plurality of water spraying holes 212 are evenly distributed in the middle of the inclined surface 224 .

[0041] There are two inclined surfaces 224 , which are symmetrically distributed along the water spraying portion 223 , one end of each inclined surface 224 is connected to one end of the connecting surface 225 , and the other end of each inclined surface 224 is connected to one end of the right-angle portion 222 .

[0042] The included angle between the inclined surface 224 and the vertical surface is 45 degrees.

[0043] The half clamp 4 includes a left fixing plate 44 and a right fixing plate 45; one end of the left fixing plate 44 is connected to the top of one end of the groove 41, and the top of the other end of the groove 41 is connected to one end of the right fixing plate.

[0044] The left fixing plate 44 is provided with two fixing holes 42 , and the right fixing plate 45 is provided with two fixing holes 42 .

[0045] The connection plate 24 is evenly provided with three connection holes 241 , and the positions of the connection holes 241 match the connectors of the sensing device.

[0046] The supplementary description of the present invention is as follows: The material of the present invention is as follows: the arc coil 21 is made of a copper tube, and the bendable tube 3 is made of a bendable copper tube. The bendable copper tube has good flexibility, so the bendable tube 3 can be in an unfolded state or a folded state, and both ends of the bendable tube 3 are welded to the arc coil 21; the busbar 22 and the connecting plate 24 are made of copper plates; because copper has good electrical conductivity, the current can flow from the connecting plate 24 and the busbar 22 to the arc coil 21 and the bendable tube 3, and then the arc coil 21 and the bendable tube 3 generate an induced current on the surface of the cylindrical part 8 or the semi-cylindrical part 81, so that the surface of the cylindrical part 8 or the semi-cylindrical part 81 is heated to complete the heating stage in the induction quenching.

[0047] Embodiment 1: See also Figure 1 — Fig.15 A foldable sensor, the sensor includes a left device 1, a right device 2 and a bendable tube 3; the bendable tube 3 includes a left connecting portion 31, a bending portion 32 and a right connecting portion 33 connected in sequence, and the movement stroke of the right connecting portion 33 is close to the left connecting portion 31 and away from the left connecting portion 31; the right connecting portion 33 is connected to one end of the right device 2, the left connecting portion 31 is connected to one end of the left device 1, and the structures of the left device 1 and the right device 2 are the same; the right device 2 includes a circular arc coil 21 and a busbar 22, the circular arc coil 21 One end of the arc coil 21 is connected to one end of the left connection part 31 or the right connection part 33, and one end of the arc coil 21 away from the left connection part 31 or the right connection part 33 is connected to one end of the vertical pipe 23. The middle part of the vertical pipe 23 is inserted into the groove 41 of the half clamp 4. The half clamp 4 is provided with fixing holes 42 at both ends of the groove 41, and one end of the screw 43 is inserted into the fixing hole 42; the end of the screw 43 away from the fixing hole 42 is inserted into the screw hole 221 of the busbar 22, and the end of the busbar 22 away from the screw hole 221 is vertically connected to one end of the connecting plate 24. The side of the busbar 22 away from the half clamp 4 is connected to the side of the insulating sheet 5, and the outer surface of the busbar 22 is wrapped with insulating cloth 6. The insulating sheet 5 is a mica sheet, and the insulating cloth 6 is yellow wax cloth. Preferably, the screw 43 is wrapped with insulating tape, and the screw 43 is covered with an insulating washer and a nut. Preferably, the insulating cloth can be fixed to the busbar 22 for a long time.

[0048] When using, first observe whether the part to be processed is a cylindrical part 8 or a semi-cylindrical part 81. If the part to be processed is a cylindrical part 8, then make the bending part 32 in an unfolded state. At this time, the left connecting part 31, the bending part 32, and the right connecting part 33 are on the same vertical or horizontal plane; if the part to be processed is a semi-cylindrical part 81, then make the bending part 32 in a folded state. At this time, the bending part 32 is curved, and the left connecting part 31 and the right connecting part 33 are parallel to each other; then insert the vertical pipe 23 into the groove 41, and then align the fixing hole 42 with the screw hole 221 in turn, and then insert the screw 43 into the fixing hole 42 and the screw hole 221 in turn. At this time, both sides of the half clamp 4 The insulating sheet 5 is fixed between the busbars 22, and the busbars 22 are wrapped with insulating cloth 6, and the cylindrical part 8 or the semi-cylindrical part 81 is placed in the arc coil 21, so that there is a certain gap between the arc coil 21 and the cylindrical part 8 or the semi-cylindrical part 81, and then the connecting plate 24 is connected to the induction device, and then the induction device is turned on, and then the alternating current of the induction device flows through the connecting plate 24, the busbar 22, and the vertical tube 23 in turn, and the alternating current flows to the arc coil 21 and the flexible tube 3. At this time, the alternating current generates an alternating magnetic field located at The cylindrical part 8 or the semi-cylindrical part 81 in the alternating magnetic field generates a high-density induced current, which generates heat, so the surface of the cylindrical part 8 or the semi-cylindrical part 81 is rapidly heated up to complete the heating stage in the induction hardening; at this time, the arc coil 21 and the flexible tube 3 can move back and forth along the surface of the cylindrical part 8 or the semi-cylindrical part 81 to enhance the heating effect; then the cylindrical part 8 or the semi-cylindrical part 81 is subjected to a cooling stage, and after cooling, the induction hardening of the cylindrical part 8 or the semi-cylindrical part 81 is completed; there needs to be a certain gap between the arc coil 21, the flexible tube 3 and the surface of the cylindrical part 8 or the semi-cylindrical part 81, To prevent the strong alternating current in the arc coil 21 and the bendable tube 3 from burning the cylindrical part 8 or the semi-cylindrical part 81; the insulating sheet 5 is located between the two busbars 22 to prevent the two busbars 22 from short-circuiting and causing danger; the insulating cloth 6 is used to wrap the two busbars 22 to prevent the busbars 22 from leaking electricity; the insulating cloth 6 can be wrapped and fixed with the busbars 22 for a long time for continued use next time; the outside of the screw 43 is wrapped with insulating tape, and an insulating washer and a nut are also sleeved on one end of the screw 43 passing through the screw hole 221 to achieve insulation fixation of the screw 43 and the busbar 22 to prevent a short circuit between the busbars 22 caused by the connection between the screws 43.

[0049] Embodiment 2: The basic content is the same as that of Example 1, except that: See also Figure 1 — Fig. 9The end of the vertical pipe 23 away from the arc coil 21 is vertically connected to the water inlet pipe 7, and the end of the water inlet pipe 7 away from the vertical pipe 23 is provided with a pipe joint 71; the other end of the vertical pipe 23 is connected to one end of the arc coil 21, and the arc coil 21 is evenly distributed with a plurality of water spray holes 212. The inner side of the arc coil 21 is a right angle portion 222, and the outer side of the arc coil 21 is a water spray portion 223, and the water spray portion 223 includes an inclined surface 224, and a plurality of water spray holes 212 are evenly distributed in the middle of the inclined surface 224. There are two inclined surfaces 224, and the inclined surfaces 224 are symmetrically distributed along the water spray portion 223. One end of the inclined surface 224 is connected to one end of the connecting surface 225, and the other end of the inclined surface 224 is connected to one end of the right angle portion 222. The angle between the inclined surface 224 and the vertical plane is forty-five degrees.

[0050] When in use, first connect the pipe joint 71 to one end of the water outlet device, the water first flows from the water outlet device to the pipe joint 71, then flows to the water inlet pipe 7, then flows along the water inlet pipe 7 to the vertical pipe 23, then flows to the water spraying portion 223 and the right angle portion 222, when the water approaches the inclined surface 224, the water is sprayed out from the water spraying hole 212, and then the water flows to the surface of the cylindrical part 8 or the semi-cylindrical part 81 to cool the surface of the cylindrical part 8 or the semi-cylindrical part 81, so as to complete the cooling stage in the induction quenching; when the inclined surface 224 is forty-five degrees, the angle of the water sprayed from the water spraying hole 212 is also forty-five degrees, at this time, the water is for the cylindrical part 8 or the semi-cylindrical part The cooling effect of 81 is the best. If the angle of water spraying is less than forty-five degrees, the pressure of water spraying to the surface of cylindrical part 8 or semi-cylindrical part 81 will be relatively large, the surface of cylindrical part 8 or semi-cylindrical part 81 will be cooled rapidly, and there is a risk of cracking of cylindrical part 8 or semi-cylindrical part 81; if the angle of water spraying is greater than forty-five degrees, the pressure of water spraying to the surface of cylindrical part 8 or semi-cylindrical part 81 will be relatively small, the hardness of the surface of cylindrical part 8 or semi-cylindrical part 81 will decrease, resulting in failure to meet the processing requirements; when water is in the arc coil 21 and the flexible tube 3, the arc coil 21 and the flexible tube 3 are also cooled to a certain extent.

[0051] Embodiment 3: The basic content is the same as that of Example 1, except that: See also Figure 1 — Fig.15 The half clamp 4 includes a left fixing plate 44 and a right fixing plate 45; one end of the left fixing plate 44 is connected to the top of one end of the groove 41, and the top of the other end of the groove 41 is connected to one end of the right fixing plate. Two fixing holes 42 are provided on the left fixing plate 44, and two fixing holes 42 are provided on the right fixing plate 45. Three connecting holes 241 are evenly provided on the connecting plate 24, and the positions of the connecting holes 241 match the connectors of the sensing device.

[0052] In application, when the curved portion 32 is in the unfolded state, the two vertical tubes 23 are respectively located in two narrow grooves 41. Fig.12 When the curved portion 32 is in the folded state, the two vertical tubes 23 are both located in a wider groove 41, and the groove 41 is shown in FIG. Fig.14 ; After the vertical pipe 23 is inserted into the groove 41, the screw 43 is inserted into the fixing hole 42 and the screw hole 221 in sequence. At this time, the left fixing plate 44 and the right fixing plate 45 both move toward the vertical pipe 23, so the left fixing plate 44 and the right fixing plate 45 clamp the vertical pipe 23 from both sides of the vertical pipe 23, thereby achieving the fixing effect of the vertical pipe 23; the connecting hole 241 on the connecting plate 24 cooperates with the connector of the sensing device, and the position, size and number of the connecting hole 241 can be set according to the connector of the sensing device.

[0053] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A foldable sensor, characterized in that: The sensor comprises a left device (1), a right device (2) and a bendable tube (3); The bendable tube (3) comprises a left connecting portion (31), a bending portion (32) and a right connecting portion (33) which are connected in sequence, and the movement stroke of the right connecting portion (33) is close to the left connecting portion (31) and away from the left connecting portion (31); The right connecting portion (33) is connected to one end of the right device (2), the left connecting portion (31) is connected to one end of the left device (1), and the left device (1) and the right device (2) have the same structure; the right device (2) comprises an arc coil (21) and a busbar (22), one end of the arc coil (21) is connected to one end of the left connecting portion (31) or the right connecting portion (33), and one end of the arc coil (21) away from the left connecting portion (31) or the right connecting portion (33) is connected to the vertical pipe. The middle part of the vertical pipe (23) is inserted into the groove (41) of the half clamp (4), and the half clamp (4) is provided with fixing holes (42) at the two ends of the groove (41), and one end of a screw (43) is inserted into the fixing hole (42); the end of the screw (43) away from the fixing hole (42) is inserted into the screw hole (221) of the busbar (22), and the end of the busbar (22) away from the screw hole (221) is vertically connected to one end of the connecting plate (24).

2. The foldable sensor according to claim 1, characterized in that: A side of the busbar (22) away from the half clamp (4) is connected to a side of the insulating sheet (5), and an outer surface of the busbar (22) is wrapped with insulating cloth (6).

3. A foldable sensor according to claim 2, characterized in that: The insulating sheet (5) is a mica sheet, and the insulating cloth (6) is yellow wax cloth.

4. A foldable sensor according to claim 1, 2 or 3, characterized in that: One end of the vertical pipe (23) away from the circular arc coil (21) is vertically connected to a water inlet pipe (7), and one end of the water inlet pipe (7) away from the vertical pipe (23) is provided with a pipe joint (71); the other end of the vertical pipe (23) is connected to one end of the circular arc coil (21), and a plurality of water spray holes (212) are evenly distributed on the circular arc coil (21).

5. The foldable sensor according to claim 4, characterized in that: The inner side of the circular arc coil (21) is a right-angle portion (222), and the outer side of the circular arc coil (21) is a water spray portion (223). The water spray portion (223) includes an inclined surface (224), and a plurality of water spray holes (212) are evenly distributed in the middle of the inclined surface (224).

6. The foldable sensor according to claim 5, characterized in that: There are two inclined surfaces (224), which are symmetrically distributed along the water spray portion (223), one end of the inclined surface (224) is connected to one end of the connecting surface (225), and the other end of the inclined surface (224) is connected to one end of the right-angle portion (222).

7. The foldable sensor according to claim 6, characterized in that: The included angle between the inclined surface (224) and the vertical surface is forty-five degrees.

8. A foldable sensor according to claim 1, 2 or 3, characterized in that: The half clamp (4) comprises a left fixing plate (44) and a right fixing plate (45); one end of the left fixing plate (44) is connected to the top of one end of the groove (41), and the top of the other end of the groove (41) is connected to one end of the right fixing plate (45).

9. The foldable sensor according to claim 8, characterized in that: The left fixing plate (44) is provided with two fixing holes (42), and the right fixing plate (45) is provided with two fixing holes (42).

10. The foldable sensor according to claim 9, characterized in that: Three connection holes (241) are evenly arranged on the connection plate (24), and the positions of the connection holes (241) match the connectors of the sensing device.

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