Magnetic field level measuring device of small-gap magnet

Abstract

The invention discloses a magnetic field level measuring device of a small-gap magnet, the magnetic field level measuring device of the small-gap magnet comprises a magnetic field generator and a magnetic field detection belt, the magnetic field generator defines a measuring gap, the measuring gap comprises a first belt inlet and a first belt outlet which are opposite in the length direction of the measuring gap, the magnetic field generator is used for generating a preset magnetic field in the measurement gap; the magnetic field detection belt comprises a flexible belt and a magnetic field detector, the magnetic field detector and the heating wire are both arranged on the flexible belt, and the magnetic field detection belt penetrates through the first belt inlet and the first belt outlet so that one part of the magnetic field detection belt can be arranged in the measurement gap; and the magnetic field detection belt can move in the length direction of the measurement gap, so that the magnetic field detector can detect the magnetic field in the measurement gap. The magnetic field level measuring device of the small-gap magnet can measure the magnetic field in the small gap of the magnetic field generator.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic field measurement, and more particularly, to a magnetic field level measurement device for a small-gap magnet. Background Art

[0002] With the continuous development of advanced synchrotron radiation light sources and free electron laser devices, small-gap magnets with high excitation efficiency and strong peak magnetic fields have become a research direction for key technologies of advanced accelerators. The magnetic field level measurement system is mainly applicable to magnets with small magnetic gaps (magnetic gap < 15 mm). With the development of accelerator technology and the requirements of light source properties, small-gap magnets have become a new development trend. Before the magnet is installed on the accelerator and operated, the magnetic field needs to be measured in the working state. However, it is difficult to measure the magnetic field in the narrow gap of the magnet assembly with a narrow gap, making the magnetic field measurement process difficult to carry out. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present invention provides a magnetic field level measurement device for a small-gap magnet, which can measure the magnetic field in a smaller gap.

[0005] The magnetic field level measurement device for a small-gap magnet according to an embodiment of the present invention includes: a magnetic field generator that defines a measurement gap, the measurement gap including a first inlet and a first outlet opposite to each other in its length direction, and the magnetic field generator is used to generate a preset magnetic field in the measurement gap; a magnetic field detection tape, the magnetic field detection tape including a flexible tape and a magnetic field detector, the magnetic field detector and the heating wire are both provided on the flexible tape, the magnetic field detection tape passes through the first inlet and the first outlet so that a part of the magnetic field detection tape is disposed in the measurement gap, and the magnetic field detection tape can move in the length direction of the measurement gap so that the magnetic field detector can detect the magnetic field in the measurement gap.

[0006] The magnetic field level measurement device for a small-gap magnet according to an embodiment of the present invention sets a magnetic field detection tape on the flexible tape, so that the flexible tape can drive the magnetic field detection tape into the measurement gap, and the magnetic field detector can move along the length direction of the measurement gap. Therefore, the magnetic field detection tape can realize the measurement and acquisition of the magnetic field data in the measurement gap.

[0007] In some embodiments, the magnetic field level measuring device for the small-gap magnet further comprises: a guiding tube which penetrates through the second tape inlet, the measuring gap and the second tape outlet. The guiding tube includes a guiding section, at least part of the guiding tube is arranged in the measuring gap, at least part of the guiding tube is provided with guiding grooves, the extending direction of the guiding grooves is consistent with the length direction of the measuring gap, and a part of the magnetic field detection tape is movably arranged in the guiding grooves along the length direction of the measuring gap.

[0008] In some embodiments, the magnetic field level measuring device for the small-gap magnet further comprises: a heating wire. An installation groove is formed in the guiding tube, and the heating wire is arranged in the installation groove and is used for heating the guiding tube.

[0009] In some embodiments, the magnetic field level measuring device for the small-gap magnet further comprises: a vacuum test chamber and a detection tape driving assembly. The vacuum test chamber includes a second tape inlet and a second tape outlet. The magnetic field generator is arranged in the vacuum test chamber so as to isolate the magnetic field generator from the external atmosphere. The magnetic field detection tape is connected to the detection tape driving assembly so that the detection tape driving assembly can drive the magnetic field detection tape to move along the length direction of the measuring gap in the measuring gap.

[0010] In some embodiments, the magnetic field level measuring device for the small-gap magnet further comprises: a first sealing tube and a second sealing tube. The vacuum test chamber includes a first side wall and a second side wall opposite to each other in the length direction of the measuring gap. The second tape inlet is formed in the first side wall. The first sealing tube is arranged on the first side wall and includes a sealed tape inlet channel. The first sealing tube covers the second tape inlet and the second tape inlet communicates with the sealed tape inlet channel so that the magnetic field detection tape can movably penetrate through the sealed tape inlet channel and the second tape inlet. The second sealing tube is arranged on the second side wall and includes a sealed tape outlet channel. The second sealing tube covers the second tape outlet and the second tape outlet communicates with the sealed tape outlet channel so that the magnetic field detection tape can movably penetrate through the sealed tape outlet channel and the second tape outlet. At least one of the first sealing tube and the second sealing tube is provided with a vacuum pumping port.

[0011] In some embodiments, the magnetic field level measuring device for the small-gap magnet further comprises: at least one heater, and the heater is arranged on the first sealing tube; and / or the heater is arranged on the second sealing tube.

[0012] In some embodiments, the detection tape driving assembly includes a tape feeding driver and a tape rewinding driver. The tape feeding driver includes a tape feeding roller and a first bracket. The tape feeding roller is rotatably arranged on the first bracket. The tape rewinding driver includes a tape rewinding roller and a second bracket. The tape rewinding roller is rotatably arranged on the second bracket. One end of the magnetic field detection tape is connected to the tape feeding roller, and the other end of the magnetic field detection tape is connected to the tape rewinding roller. The rotation speed of the tape feeding roller is adapted to the rotation speed of the tape rewinding roller to keep the magnetic field detection tape taut.

[0013] In some embodiments, the first bracket includes a first base, a first moving plate body and a second moving plate body. The tape feeding roller is arranged on the second moving plate body. The first moving plate body is movably arranged on the first base along the length direction of the measurement gap. The second moving plate body is movably arranged on the first moving plate body along a first direction. The second bracket includes a second base, a third moving plate body and a fourth moving plate body. The tape rewinding roller is arranged on the fourth moving plate body. The third moving plate body is movably arranged on the second base along the length direction of the measurement gap. The fourth moving plate body is movably arranged on the third moving plate body along the first direction. The first direction is perpendicular to the length direction of the measurement gap.

[0014] In some embodiments, the first bracket further includes a first locking assembly and a second locking assembly. The first locking assembly includes a first fixing plate and a first pressing member. The first fixing plate is arranged on the first moving plate body, and the first fixing plate has a first through hole corresponding to the first base. The first pressing member is arranged in the first through hole. The second locking assembly includes a second fixing plate and a second pressing member. The second fixing plate is arranged on the second moving plate body, and the second fixing plate has a second through hole corresponding to the first moving plate body. The second pressing member is arranged in the second through hole. The second bracket further includes a third locking assembly and a fourth locking assembly. The third locking assembly includes a third fixing plate and a third pressing member. The third fixing plate is arranged on the third moving plate body, and the third fixing plate has a third through hole corresponding to the second base. The third pressing member is arranged in the third through hole. The fourth locking assembly includes a fourth fixing plate and a fourth pressing member. The fourth fixing plate is arranged on the fourth moving plate body, and the fourth fixing plate has a fourth through hole corresponding to the third moving plate body. The fourth pressing member is arranged in the fourth through hole.

[0015] In some embodiments, the tape feeding driver further includes a first tension pulley, a first support seat, and a first elastic member. The first support seat is disposed on the first bracket. The first support seat includes a first slide rail, and the extending direction of the first slide rail is perpendicular to the length direction of the measurement gap. The first tension pulley is movably clamped in the first slide rail along the extending direction of the first slide rail. One end of the first elastic member is connected to the first support seat, and the other end of the first elastic member is connected to the first tension pulley, so that the first tension pulley abuts against the magnetic field detection tape. The tape rewinding driver further includes a second tension pulley, a second support seat, and a second elastic member. The second support seat is disposed on the second bracket. The second support seat includes a second slide rail, and the extending direction of the second slide rail is perpendicular to the length direction of the measurement gap. The second tension pulley is movably clamped in the second slide rail along the extending direction of the second slide rail. One end of the second elastic member is connected to the second support seat, and the other end of the second elastic member is connected to the second tension pulley, so that the second tension pulley abuts against the magnetic field detection tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a magnetic field level measuring device for a small-gap magnet according to an embodiment of the present invention.

[0017] Figure 2 is a schematic structural diagram of a magnetic field level measuring device for a small-gap magnet according to an embodiment of the present invention.

[0018] Figure 3 is a schematic structural diagram of a magnetic field detection tape according to an embodiment of the present invention.

[0019] Figure 4 is a schematic structural diagram of a tape feeding driver and a tape rewinding driver according to an embodiment of the present invention.

[0020] Figure 5 is a schematic structural diagram of a tape feeding driver and a tape rewinding driver according to an embodiment of the present invention.

[0021] Figure 6 is a schematic structural diagram of a tape feeding driver and a tape rewinding driver according to an embodiment of the present invention.

[0022] Reference Signs:

[0023] Magnetic field level measuring device 100 for a small-gap magnet;

[0024] Magnetic field generator 1; First tape inlet 101; First tape outlet 102;

[0025] Magnetic field detection tape 2; Flexible tape 21; Magnetic field detector 22;

[0026] Guide tube 3;

[0027] The tape driving assembly 4; the tape feeding driver 41; the tape feeding roller 411; the first bracket 412; the first base 4121; the first moving plate body 4122; the second moving plate body 4123; the first fixing plate 4124; the first through hole 41241; the first pressing member 4125; the second fixing plate 4126; the second through hole 41261; the second pressing member 4127; the first tensioning wheel 413; the first supporting seat 414; the first elastic member 415; the tape rewinding driver 42; the tape rewinding roller 421; the second bracket 422; the second base 4221; the third moving plate body 4222; the fourth moving plate body 4223; the third fixing plate 4224; the third through hole 42241; the third pressing member 4225; the fourth fixing plate 4226; the fourth pressing member 4227; the fourth through hole 42261; the second tensioning wheel 423; the second supporting seat 424; the second elastic member 425;

[0028] The first sealing tube 51; the second sealing tube 52. Specific embodiments

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0030] The magnetic field level measuring device 100 of the small-gap magnet according to the embodiment of the present invention will be described below with reference to the drawings.

[0031] As Figures 1 - 6 shown, the magnetic field level measuring device 100 of the small-gap magnet according to the embodiment of the present invention includes a magnetic field generator 1 and a magnetic field detection tape 2.

[0032] The magnetic field generator 1 defines a measurement gap. The measurement gap includes a first tape inlet 101 and a first tape outlet 102 that are opposite in the length direction thereof (for example, the left-right direction in Figure 1 ). The magnetic field generator 1 is used to generate a preset magnetic field in the measurement gap. Among them, the preset magnetic field can be the magnetic field applied when the magnetic field generator 1 is installed on the accelerator and working, or other magnetic fields.

[0033] The magnetic field detection tape 2 includes a flexible tape 21 and a magnetic field detector 22. The magnetic field detector 22 is provided on the flexible tape 21. The magnetic field detection tape 2 passes through the first tape inlet 101 and the first tape outlet 102 so that a part of the magnetic field detection tape 2 is disposed in the measurement gap, and the magnetic field detection tape 2 can move in the length direction of the measurement gap so that the magnetic field detector 22 can detect the magnetic field in the measurement gap.

[0034] The specific implementation process of the magnetic field level measuring device 100 of the small-gap magnet according to the embodiment of the present invention will be described below with reference to the drawings.

[0035] The starting magnetic field generator 1 generates a preset magnetic field in the measurement gap. The magnetic field detection tape 2 is threaded into the measurement gap, and the magnetic field detection tape 2 is dragged to move along the length direction of the measurement gap, so that the magnetic field detector 22 installed on the flexible tape 21 can move along the length direction of the measurement gap, thereby using the magnetic field detector 22 to detect the magnetic field of each part in the length direction of the measurement gap in the measurement gap.

[0036] The magnetic field level measuring device 100 of the small-gap magnet according to the embodiment of the present invention enables the flexible tape 21 to drive the magnetic field detection tape 2 into the measurement gap and enables the magnetic field detector 22 to move along the length direction of the measurement gap by arranging the magnetic field detection tape 2 on the flexible tape 21. Therefore, the magnetic field detection tape 2 can measure and collect the data of the magnetic field of the measurement gap.

[0037] To make the present application easier to understand, the following takes the length direction of the measurement gap and the left-right direction as an example, and the first direction is consistent with the front-back direction as an example to further describe the magnetic field level measuring device 100 of the small-gap magnet according to the embodiment of the present invention.

[0038] As Figures 1 - 4 shown, the magnetic field level measuring device 100 of the small-gap magnet according to the embodiment of the present invention includes a magnetic field generator 1, a magnetic field detection tape 2, a guide tube 3, a heating wire, a vacuum test chamber, a detection tape drive assembly 4, a first sealing tube 51, a second sealing tube 52, and a heater.

[0039] In some embodiments, as Figure 1 and Figure 2 shown, the guide tube 3 is threaded through the second tape inlet, the measurement gap, and the second tape outlet. The guide tube 3 includes a guiding section. At least part of the guide tube 3 is arranged in the measurement gap. At least part of the guide tube 3 is provided with a guiding groove, and the extending direction of the guiding groove is consistent with the left-right direction. A part of the magnetic field detection tape 2 is movably arranged in the guiding groove along the length direction of the measurement gap. In other words, a part of the magnetic field detection tape 2 refers to the part of the magnetic field detection tape 2 that is located in the measurement gap during measurement. The flexible tape 21 carries the magnetic field detector 22 to move in the measurement gap, and this part will change as the magnetic field detection tape 2 moves. Therefore, this part does not refer to a certain fixed position of the magnetic field detection tape 2.

[0040] The guide tube 3 can play a role in restricting the magnetic field detection tape 2, enabling the magnetic field detection tape 2 to move precisely in the left-right direction, thereby greatly improving the measurement accuracy of the magnetic field level measuring device 100 of the small-gap magnet according to the embodiment of the present invention. And the guide tube 3 can separate the magnetic field detection tape 2 from the magnetic field generator 1, avoiding direct contact between the magnetic field detection tape 2 and the magnetic field generator 1 and preventing mutual interference between the magnetic field detection tape 2 and the magnetic field generator 1.

[0041] In some embodiments, the magnetic field detector 22 is a Hall probe, facilitating the detection of the magnetic field within the measurement gap.

[0042] In some embodiments, the guiding tube 3 is provided with a mounting groove, and a heating wire is disposed in the mounting groove for heating the guiding tube 3. When the magnetic field generator 1 is in a low-temperature environment, for example, the operating temperature is 300K, the guiding tube 3 is heated by the heating wire to maintain the guiding tube 3 at room temperature, for example, to maintain the guiding tube 3 at the ambient temperature. On the one hand, the heating wire heats the guiding tube 3 to prevent air frosting from hindering the normal movement of the magnetic field detection tape 2, thus ensuring the normal operation of the magnetic field level measurement device 100 of the small-gap magnet according to the embodiments of the present invention. On the other hand, by maintaining the guiding tube 3 at room temperature through the heating wire, the heat exchange between the guiding tube 3 and the magnetic field generator 1 is reduced.

[0043] Preferably, the heating wire surrounds the guiding tube 3, and the dimension of the heating wire in the left-right direction is the same as that of the guiding tube 3, so as to be able to fully heat the guiding tube 3 and make the temperature of the guiding tube 3 more uniform.

[0044] In some embodiments, the vacuum test chamber (not shown in the figure) includes a second tape inlet and a second tape outlet. The magnetic field generator 1 is disposed in the vacuum test chamber to isolate the magnetic field generator 1 from the outside atmosphere. The magnetic field detection tape 2 is connected to the tape driving assembly 4 so that the tape driving assembly 4 can drive the magnetic field detection tape 2 to move in the length direction of the measurement gap within the measurement gap. The use of the vacuum test chamber enables the magnetic field generator 1 and the magnetic field detection tape 2 to operate in a vacuum state, thereby further improving the measurement accuracy. And within a certain space of the vacuum test chamber, it is convenient to control the temperature in the vacuum test chamber, thus providing a low-temperature environment for the magnetic field generator 1, greatly improving the practicality and universality of the magnetic field level measurement device 100 of the small-gap magnet according to the embodiments of the present invention.

[0045] Further, the vacuum test chamber includes a first side wall and a second side wall opposite to each other in the left-right direction. The second tape inlet is opened on the first side wall. The first sealing tube 51 is disposed on the first side wall. The first sealing tube 51 includes a sealed tape inlet channel. The first sealing tube 51 covers the second tape inlet and the second tape inlet communicates with the sealed tape inlet channel, so that the magnetic field detection tape 2 is movably threaded through the sealed tape inlet channel and the second tape inlet. The second sealing tube 52 is disposed on the second side wall. The second sealing tube 52 includes a sealed tape outlet channel. The second sealing tube 52 covers the second tape outlet and the second tape outlet communicates with the sealed tape outlet channel, so that the magnetic field detection tape 2 is movably threaded through the sealed tape outlet channel and the second tape outlet. At least one of the first sealing tube 51 and the second sealing tube 52 is provided with a vacuum pumping port.

[0046] In other words, one end of the magnetic field detection tape 2 sequentially passes through the second tape inlet, the first tape inlet 101, the first tape outlet 102, and the second tape outlet. The first sealing tube 51 is hermetically connected to the vacuum test chamber through a sealed tape inlet channel, and the second sealing tube 52 is hermetically connected to the vacuum test chamber through a sealed tape outlet channel. The vacuum pumping port of at least one of the first sealing tube 51 and the first sealing tube 51 can be used to evacuate the vacuum test chamber to a vacuum state. For example, a fan is connected to the vacuum pumping hole to evacuate the vacuum test chamber to a vacuum state.

[0047] In some embodiments, there is at least one heater, that is, the heater is one or more. The heater is provided on the first sealing tube 51; and / or, the heater is provided on the second sealing tube 52. In other words, the heater is provided on the first sealing tube 51; or, the heater is provided on the second sealing tube 52; or, heaters are provided on both the first sealing tube 51 and the second sealing tube 52. The heater is used to heat the first sealing tube 51 to prevent the air in the sealed tape inlet channel from frosting, thereby preventing the frosting from hindering the movement of the magnetic field detection tape 2; the heater is used to heat the second sealing tube 52 to prevent the air in the sealed tape outlet channel from frosting, thereby preventing the frosting from hindering the movement of the magnetic field detection tape 2.

[0048] In some embodiments, as Figures 4 - 6 shown, the detection tape driving assembly 4 includes a tape feeding driver 41 and a tape winding driver 42. The tape feeding driver 41 includes a tape feeding roller 411 and a first bracket 412. The tape feeding roller 411 is rotatably provided on the first bracket 412. The tape winding driver 42 includes a tape winding roller 421 and a second bracket 422. The tape feeding roller 411 is rotatably provided on the second bracket 422. One end of the magnetic field detection tape 2 is connected to the tape feeding roller 411, and the other end of the magnetic field detection tape 2 is connected to the tape winding roller 421. The rotation speed of the tape feeding roller 411 is adapted to the rotation speed of the tape winding roller 421 to keep the magnetic field detection tape 2 taut. The tape feeding driver 41 and the tape winding driver 42 are used to traction the magnetic field detection tape 2 to move in the left-right direction, making the movement of the magnetic field detection tape 2 more stable, so that the detection effect of the magnetic field detector 22 is more stable and the collected data is more complete and accurate.

[0049] For example Figure 1As shown in the figure, the tape feeding drive 41 and the tape rewinding drive 42 are opposite to each other in the left-right direction. The tape feeding drive 41 is located on the left side of the vacuum test chamber, and the tape rewinding drive 42 is located on the right side of the vacuum test chamber. The left end of the magnetic field detection tape 2 is connected to the tape feeding roller 411, and the right end of the magnetic field detection tape 2 sequentially passes through the second tape inlet, the first tape inlet 101, the first tape outlet 102, and the second tape outlet and is connected to the tape rewinding roller 421 on the tape rewinding drive 42. Among them, the rotation axes of the tape feeding roller 411 and the tape rewinding roller 421 are both consistent with the front-back direction, and the rotation speeds of the tape feeding roller 411 and the tape rewinding roller 421 are adapted. For example, when the outer peripheral contour dimensions of the tape feeding roller 411 and the tape rewinding roller 421 are the same, the rotation speeds of the tape feeding roller 411 and the tape rewinding roller 421 are the same and both rotate clockwise, thereby driving the magnetic field detection tape 2 to move to the left or right.

[0050] Furthermore, the rotation of the tape feeding roller 411 and the tape rewinding roller 421 is driven by a motor, and an accelerator is configured on the motor to ensure that the rotation of the tape feeding roller 411 and the tape rewinding roller 421 is smoother.

[0051] In some embodiments, as Figures 4 - 6 shown, the first bracket 412 includes a first base 4121, a first moving plate body 4122, and a second moving plate body 4123. The tape feeding roller 411 is arranged on the second moving plate body 4123. The first moving plate body 4122 is movably arranged on the first base 4121 in the left-right direction, and the second moving plate body 4123 is movably arranged on the first moving plate body 4122 in the front-back direction. The second bracket 422 includes a second base 4221, a third moving plate body 4222, and a fourth moving plate body 4223. The tape rewinding roller 421 is arranged on the fourth moving plate body 4223. The third moving plate body 4222 is movably arranged on the second base 4221 in the left-right direction, and the fourth moving plate body 4223 is movably arranged on the third moving plate body 4222 in the front-back direction.

[0052] In other words, the position of the end of the magnetic field detection tape 2 connected to the tape feeding roller 411 in the left-right direction can be adjusted by adjusting the relative movement of the first moving plate body 4,122 and the first base 4121, thereby changing the moving direction of the magnetic field detection tape 2. The position of the end of the magnetic field detection tape 2 connected to the tape feeding roller 411 in the front-back direction can be adjusted by adjusting the relative movement of the first moving plate body 4122 and the second moving plate body 4123. Therefore, without changing the position of the first bracket 412, the position of the left end of the magnetic field detection tape 2 can be adjusted, and the operation is convenient.

[0053] The position of the end of the magnetic field detection tape 2 connected to the tape take-up roller 421 in the left-right direction can be adjusted by adjusting the relative movement of the third moving plate body 4222 and the second base 4221, thereby changing the moving direction of the magnetic field detection tape 2; the position of the end of the magnetic field detection tape 2 connected to the tape take-up roller 421 in the front-back direction can be adjusted by adjusting the relative movement of the fourth moving plate body 4223 and the third moving plate body 4222. Therefore, without changing the position of the second bracket 422, the position of the left end of the magnetic field detection tape 2 can be adjusted, which is convenient for operation.

[0054] In some embodiments, as Figures 4 - 6 shown, the first bracket 412 further includes a first locking assembly and a second locking assembly. The first locking assembly includes a first fixing plate 4124 and a first pressing member 4125. The first fixing plate 4124 is provided on the first moving plate body 4122, and the first fixing plate 4124 has a first through hole 41241, and the first through hole 41241 is provided with internal threads. The first through hole 41241 corresponds to the first base 4121. The first pressing member 4125 is provided in the first through hole 41241, and an external thread matching the internal thread of the first through hole 41241 is provided on the outer peripheral surface of the first pressing member 4125. Thus, the first pressing member 4125 is pressed against the first base 4121, so that the first moving plate body 4122 and the first base 4121 cannot move relative to each other, and further the first moving plate body 4122 and the first base 4121 are fixed.

[0055] The second locking assembly includes a second fixing plate 4126 and a second pressing member 4127. The second fixing plate 4126 is provided on the second moving plate body 4123, and the second fixing plate 4126 has a second through hole 41261, and the second through hole 41261 is provided with internal threads. The second through hole 41261 corresponds to the first moving plate body 4122. The second pressing member 4127 is provided in the second through hole 41261, and an external thread matching the internal thread of the second through hole 41261 is provided on the outer peripheral surface of the second pressing member 4127. Thus, the second pressing member 4127 is pressed against the first moving plate body 4122, so that the first moving plate body 4122 and the second moving plate body 4123 cannot move relative to each other, and further the first moving plate body 4122 and the second moving plate body 4123 are fixed.

[0056] The second bracket 422 further includes a third locking component and a fourth locking component. The third locking component includes a third fixing plate 4224 and a third pressing member 4225. The third fixing plate 4224 is provided on the third moving plate body 4222, and the third fixing plate 4224 has a third through hole 42241. The third through hole 42241 is provided with internal threads and corresponds to the second base 4221. The third pressing member 4225 is provided in the third through hole 42241, and external threads matching the internal threads of the third through hole 42241 are provided on the outer peripheral surface of the third pressing member 4225. Thus, the third pressing member 4225 presses against the second base 4221, preventing the third moving plate body 4222 from moving relative to the second base 4221, and further fixing the third moving plate body 4222 and the second base 4221.

[0057] The fourth locking component includes a fourth fixing plate 4226 and a fourth pressing member 4227. The fourth fixing plate 4226 is provided on the fourth moving plate body 4223, and the fourth fixing plate 4226 has a fourth through hole 42261. The fourth through hole 42261 is provided with internal threads and corresponds to the third moving plate body 4222. The fourth pressing member 4227 is provided in the fourth through hole 42261, and external threads matching the internal threads of the fourth through hole 42261 are provided on the outer peripheral surface of the fourth pressing member 4227. Thus, the fourth pressing member 4227 presses against the third moving plate body 4222, preventing the third moving plate body 4222 from moving relative to the fourth moving plate body 4223, and further fixing the third moving plate body 4222 and the fourth moving plate body 4223.

[0058] In some embodiments, as Figure 5 shown, the tape feeding driver 41 further includes a first tension pulley 413, a first support seat 414, and a first elastic member 415. The first support seat 414 is provided on the first bracket 412. The first support seat 414 includes a first slide rail, and the extending direction of the first slide rail is perpendicular to the length direction of the measurement gap, that is, the up and down direction. The first tension pulley 413 is movably clamped in the first slide rail along the up and down direction. One end of the first elastic member 415 is connected to the first support seat 414, and the other end of the first elastic member 415 is connected to the first tension pulley 413, so that the first tension pulley 413 abuts against the magnetic field detection tape 2. In other words, the first tension pulley 413 is subjected to the elastic force of the first elastic member 415, causing the first tension pulley 413 to abut against the magnetic field detection tape 2, thereby ensuring that the magnetic field detection tape 2 remains in a tensioned state, and thus making the movement of the magnetic field detection tape 2 more stable.

[0059] The tape take-up driver 42 further includes a second tension pulley 423, a second support seat 424, and a second elastic member 425. The second support seat 424 is provided on the second bracket 422. The second support seat 424 includes a second slide rail. The extending direction of the second slide rail is perpendicular to the length direction of the measurement gap. The second tension pulley 423 is movably clamped in the second slide rail along the extending direction of the second slide rail. One end of the second elastic member 425 is connected to the second support seat 424, and the other end of the second elastic member 425 is connected to the second tension pulley 423, so that the second tension pulley 423 abuts against the magnetic field detection tape 2. In other words, the second tension pulley 423 is subjected to the elastic force of the second elastic member 425, so that the second tension pulley 423 abuts against the magnetic field detection tape 2, thereby ensuring that the magnetic field detection tape 2 is kept in a tensioned state, and thus making the movement of the magnetic field detection tape 2 smoother.

[0060] In some embodiments, an angle decoder is provided on at least one of the tape pay-out driver 41 and the tape take-up driver 42. The angle decoder is used to detect whether the magnetic field detection tape 2 is subjected to torsion, so as to adjust the magnetic field detection tape 2.

[0061] In some embodiments, the magnetic field level measuring device 100 of the small-gap magnet according to the embodiment of the present invention further includes a four-axis controller. The four-axis controller is electrically connected to the tape pay-out driver 41 and the tape take-up driver 42. The four-axis controller can be directly programmed and controlled through Ethernet. The tape pay-out driver 41 and the tape take-up driver 42 are synchronously controlled by the four-axis controller, so as to achieve precise synchronization of the tape pay-out of the tape pay-out driver 41 and the tape take-up of the tape take-up driver 42, and thus further ensure the running stability of the magnetic field detection tape 2.

[0062] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0063] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0064] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0066] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0067] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A magnetic field level measuring device for small-gap magnets, characterized in that, Comprising: A magnetic field generator that defines a measurement gap including a first tape inlet and a first tape outlet opposite to each other in its length direction, and the magnetic field generator is configured to generate a preset magnetic field in the measurement gap; A magnetic field detection tape that includes a flexible tape and a magnetic field detector, and both the magnetic field detector and the heating wire are provided on the flexible tape. The magnetic field detection tape passes through the first tape inlet and the first tape outlet so that a part of the magnetic field detection tape is disposed in the measurement gap, and the magnetic field detection tape is movable in the length direction of the measurement gap so that the magnetic field detector can detect the magnetic field in the measurement gap.

2. The magnetic field level measuring device for small-gap magnets according to claim 1, characterized in that, Further comprising: A guiding tube that passes through the second tape inlet, the measurement gap, and the second tape outlet. The guiding tube includes a guiding section, at least a part of the guiding tube is disposed in the measurement gap, at least a part of the guiding tube is provided with a guiding groove, the extending direction of the guiding groove is consistent with the length direction of the measurement gap, and a part of the magnetic field detection tape is movably disposed in the guiding groove along the length direction of the measurement gap.

3. The magnetic field level measuring device for small-gap magnets according to claim 2, characterized in that, Further comprising: A heating wire, and an installation groove is formed on the guiding tube, and the heating wire is disposed in the installation groove and is configured to heat the guiding tube.

4. The magnetic field level measuring device for small-gap magnets according to claim 3, characterized in that, Further comprising: A vacuum test chamber and a detection tape driving assembly, the vacuum test chamber includes a second tape inlet and a second tape outlet, The magnetic field generator is disposed in the vacuum test chamber so as to isolate the magnetic field generator from the outside atmosphere, and the magnetic field detection tape is connected to the detection tape driving assembly so that the detection tape driving assembly can drive the magnetic field detection tape to move in the length direction of the measurement gap in the measurement gap.

5. The magnetic field level measuring device for small-gap magnets according to claim 4, characterized in that, Further comprising: A first sealing tube and a second sealing tube, the vacuum test chamber includes a first side wall and a second side wall opposite to each other in the length direction of the measurement gap, and the second tape inlet is formed on the first side wall, The first sealing tube is disposed on the first side wall, the first sealing tube includes a sealed tape inlet channel, the first sealing tube covers the second tape inlet and the second tape inlet communicates with the sealed tape inlet channel so that the magnetic field detection tape movably passes through the sealed tape inlet channel and the second tape inlet, The second sealing tube is disposed on the second side wall, the second sealing tube includes a sealed tape outlet channel, the second sealing tube covers the second tape outlet and the second tape outlet communicates with the sealed tape outlet channel so that the magnetic field detection tape movably passes through the sealed tape outlet channel and the second tape outlet, At least one of the first sealing tube and the second sealing tube is provided with a vacuum pumping port.

6. The magnetic field level measuring device for small-gap magnets according to claim 5, characterized in that Further comprising: At least one heater, the heater is disposed on the first sealing tube; and / or, the heater is disposed on the second sealing tube.

7. The magnetic field level measuring device for small-gap magnets according to claim 4, characterized in that The detection tape driving assembly includes a tape feeding driver and a tape rewinding driver. The tape feeding driver includes a tape feeding roller and a first bracket. The tape feeding roller is rotatably arranged on the first bracket. The tape rewinding driver includes a tape rewinding roller and a second bracket. The tape feeding roller is rotatably arranged on the second bracket; One end of the magnetic field detection tape is connected to the tape feeding roller, and the other end of the magnetic field detection tape is connected to the tape rewinding roller. The rotation speed of the tape feeding roller is adapted to the rotation speed of the tape rewinding roller to keep the magnetic field detection tape taut.

8. The magnetic field level measuring device for small-gap magnets according to claim 7, characterized in that, The first bracket includes a first base, a first moving plate body and a second moving plate body. The tape feeding roller is arranged on the second moving plate body. The first moving plate body is movably arranged on the first base along the length direction of the measurement gap. The second moving plate body is movably arranged on the first moving plate body along a first direction; The second bracket includes a second base, a third moving plate body and a fourth moving plate body. The tape rewinding roller is arranged on the fourth moving plate body. The third moving plate body is movably arranged on the second base along the length direction of the measurement gap. The fourth moving plate body is movably arranged on the third moving plate body along the first direction. The first direction is perpendicular to the length direction of the measurement gap.

9. The magnetic field level measuring device for a small-gap magnet according to claim 8, wherein, The first bracket further includes a first locking assembly and a second locking assembly. The first locking assembly includes a first fixing plate and a first pressing member. The first fixing plate is arranged on the first moving plate body, and the first fixing plate has a first through hole. The first through hole corresponds to the first base. The first pressing member is arranged in the first through hole. The second locking assembly includes a second fixing plate and a second pressing member. The second fixing plate is arranged on the second moving plate body, and the second fixing plate has a second through hole. The second through hole corresponds to the first moving plate body. The second pressing member is arranged in the second through hole; The second bracket further includes a third locking assembly and a fourth locking assembly. The third locking assembly includes a third fixing plate and a third pressing member. The third fixing plate is arranged on the third moving plate body, and the third fixing plate has a third through hole. The third through hole corresponds to the second base. The third pressing member is arranged in the third through hole. The fourth locking assembly includes a fourth fixing plate and a fourth pressing member. The fourth fixing plate is arranged on the fourth moving plate body, and the fourth fixing plate has a fourth through hole. The fourth through hole corresponds to the third moving plate body. The fourth pressing member is arranged in the fourth through hole.

10. The magnetic field level measuring device for small-gap magnets according to any one of claims 7-9, characterized in that The tape feeding driver further includes a first tensioning wheel, a first support seat and a first elastic member. The first support seat is arranged on the first bracket. The first support seat includes a first slide rail. The extending direction of the first slide rail is perpendicular to the length direction of the measurement gap. The first tensioning wheel is movably clamped in the first slide rail along the extending direction of the first slide rail. One end of the first elastic member is connected to the first support seat, and the other end of the first elastic member is connected to the first tensioning wheel to make the first tensioning wheel abut against the magnetic field detection tape; The tape take-up driver further includes a second tension pulley, a second support seat, and a second elastic member. The second support seat is provided on the second bracket. The second support seat includes a second slide rail, and the extending direction of the second slide rail is perpendicular to the length direction of the measurement gap. The second tension pulley is movably clamped in the second slide rail along the extending direction of the second slide rail. One end of the second elastic member is connected to the second support seat, and the other end of the second elastic member is connected to the second tension pulley, so that the second tension pulley abuts against the magnetic field detection tape.

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