Rogowski coil

Abstract

The application belongs to the technical field of measurement and testing, and particularly relates to a circulator detection tool and a detection method thereof. The circulator detection tool comprises a bearing plate, a plurality of groove positions for placing circulators are formed in the bearing plate, a detection mechanism, the detection mechanism comprises a detection cover, a plurality of exhaust passages are formed in the detection cover, the inlet of the exhaust passage is located on the inner wall of the detection cover, and a flow sensor is arranged in the exhaust passage, and a control module is configured to control the driving mechanism to drive the detection cover to move to cover the groove position, and then control the inflation assembly to inflate the detection cover, so that the airflow impacts the ferrite of the circulator to simulate the pressure load of the ferrite. The circulator detection tool and the detection method thereof simulate the stress load of the ferrite on the circulator by inflation, and obtain the flow data in each exhaust passage after the load to detect the parallelism of the ferrite, so that the unqualified circulator is avoided to be delivered.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of measurement testing, and particularly relates to measurement by acceleration and deceleration of fluid, and more particularly to a circulator detection tool and a detection method thereof. BACKGROUND

[0002] The ferrite produces a gyromagnetic effect under the joint action of a constant magnetic field and a high-frequency electromagnetic field, which is the core principle of the circulator to realize one-way transmission.

[0003] The circulator is formed by the ferrite and the grounding substrate which are parallel to each other and bonded by conductive adhesive. Under stress, the conductive adhesive may have a creep displacement, thereby changing the parallelism of the ferrite. If the ferrite and the grounding substrate have a parallelism deviation (such as tilting or local warping), it will cause uneven distribution of the applied bias magnetic field.

[0004] In the related art, the parallelism between the ferrite and the grounding substrate is generally detected by image recognition. However, this method cannot simulate the actual load working condition of the circulator, resulting in inaccurate detection data. Based on the above technical problems, the person skilled in the art urgently needs to design a circulator detection tool and a detection method thereof.

[0005] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background of the present application, and therefore, the above description is not considered to constitute prior art information. SUMMARY

[0006] The present application provides a circulator detection tool and a detection method thereof.

[0007] In a first aspect, the present application provides a circulator detection tool, comprising: a bearing plate, a plurality of slot positions for placing a circulator are formed on the bearing plate; a detection mechanism, comprising: a detection cover, a plurality of exhaust channels are formed on the detection cover, the inlet of the exhaust channel is located on the inner wall of the detection cover, and a flow sensor is arranged in the exhaust channel; a driving mechanism connected with the detection cover; an air charging assembly connected with the detection cover; and a control module configured to control the driving mechanism to drive the detection cover to cover the slot position, and configured to control the air charging assembly to charge air into the detection cover, so that the airflow impacts the ferrite of the circulator in a first state to simulate the ferrite load under pressure, and configured to control the air charging assembly to charge air into the detection cover after the ferrite load under pressure, so that the airflow impacts the ferrite of the circulator in a second state, and then control each flow sensor to obtain the flow data in the corresponding exhaust channel, and determine whether the parallelism of the ferrite is qualified according to the difference between the maximum flow data and the minimum flow data.

[0008] In an alternative embodiment, the airflow in the first state comprises airflow with disordered flow rate and disordered flow volume; wherein the control module is configured to control the air charging assembly to impact the upper surface of the ferrite with airflow with disordered flow rate and disordered flow volume, i.e. to simulate that the ferrite load is under pressure.

[0009] In an alternative embodiment, the airflow in the second state comprises airflow with constant flow rate and constant flow volume; wherein the control module is configured to control the air charging assembly to impact the ferrite with airflow with constant flow rate and constant flow volume after the ferrite load is under pressure, and then control the flow sensors to acquire flow data in the corresponding exhaust channels, and determine whether the parallelism of the ferrite is qualified according to the difference between the maximum flow data and the minimum flow data.

[0010] In an alternative embodiment, the inlets are uniformly distributed along the circumference of the detection cover and located at the same height; wherein the control module is configured to determine that the parallelism of the ferrite is unqualified when the difference between the maximum flow data and the minimum flow data is greater than a threshold value.

[0011] In an alternative embodiment, the top of the detection cover is provided with an air inlet channel, and the air charging assembly is connected with the air inlet channel; wherein the air inlet channel is coaxially arranged with the slot when the detection cover covers the slot.

[0012] In an alternative embodiment, the shape of the slot is adapted to the ground substrate of the circulator to position the circulator, and the inner diameter of the detection cover is greater than the diameter of the ferrite; wherein the ground substrate is located in the slot, and the ferrite is located in the detection cover.

[0013] In an alternative embodiment, each of the inlets is provided below with a sliding groove, and an “L”-shaped baffle is slidingly arranged in the sliding groove; wherein the lower end of the “L”-shaped baffle protrudes out of the sliding groove; when the detection cover covers the slot, the lower end of the “L”-shaped baffle abuts against the upper surface of the ferrite, and the upper end of the “L”-shaped baffle blocks part of the inlet.

[0014] In an alternative embodiment, a blocking strip is arranged on the sliding groove; wherein the blocking strip is used to prevent the “L”-shaped baffle from being separated from the sliding groove.

[0015] In a second aspect, the disclosure also provides a detection method of the circulator detection tool, comprising: placing the circulator in the slot of the bearing plate; controlling the driving mechanism to cover the slot with the detection cover through the control module; controlling the inflation assembly to inflate the detection cover through the control module, so that the airflow impacts the ferrite of the circulator in a first state to simulate the pressure on the ferrite load; after the ferrite load is pressed, the inflation assembly is controlled to inflate the detection cover through the control module, so that the airflow impacts the ferrite of the circulator in a second state, and then the flow data in the corresponding exhaust channel is obtained by controlling each flow sensor, and whether the parallelism of the ferrite is qualified is judged according to the difference between the maximum flow data and the minimum flow data.

[0016] In an optional embodiment, the airflow in the first state comprises airflow with disordered flow rate and disordered flow volume; and the airflow in the second state comprises airflow with constant flow rate and constant flow volume.

[0017] The circulator detection tool and the detection method thereof simulate the force load on the ferrite of the circulator by inflation, and detect the parallelism of the ferrite by obtaining the flow data in each exhaust channel after the load, so that unqualified circulators are avoided from being put into the market.

[0018] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the present application will be realized and achieved by the structure particularly pointed out in the description and the appended drawings.

[0019] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 A structural schematic diagram of a circulator detection tool provided by the present disclosure is shown in the figure;

[0022] Figure 2 A structural schematic diagram of a circulator provided by the present disclosure is shown in the figure;

[0023] Figure 3 A structural schematic diagram of a bearing plate provided by the present disclosure is shown in the figure;

[0024] Figure 4 A schematic diagram of a load plate structure provided with a circulator according to an embodiment of the present disclosure is provided;

[0025] Figure 5 A schematic diagram of a sectional structure of a load plate provided with a circulator according to an embodiment of the present disclosure is provided;

[0026] Figure 6 A schematic diagram of a detection cover structure according to an embodiment of the present disclosure is provided;

[0027] Figure 7 A schematic diagram of a sectional structure of a detection cover according to an embodiment of the present disclosure is provided;

[0028] Figure 8 A schematic diagram of a sectional structure when the parallelism of a ferrite is qualified according to an embodiment of the present disclosure is provided;

[0029] Figure 9 A schematic diagram of a sectional structure when the parallelism of a ferrite is unqualified according to an embodiment of the present disclosure is provided.

[0030] In the drawings:

[0031] Load plate 1, slot 11;

[0032] Detection cover 2, exhaust passage 21, inlet 211, air inlet passage 22, flow sensor 23, chute 24, “L”-shaped baffle 25, baffle bar 26;

[0033] Circulator 3, grounding substrate 31, ferrite 32, conductive glue 33;

[0034] Driving mechanism 4;

[0035] Air charging assembly 5. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the present disclosure will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present disclosure.

[0037] In the related art, the circulator 3 is installed on a device, and the lower surface of the grounding substrate 31 and the upper surface of the ferrite 32 are pressed; the device does not have a vibration load in a normal working condition, and the pressing force of the circulator 3 is stable; when the device vibrates, the circulator 3 follows the vibration, so that the pressing force of the circulator 3 is unstable, and if the circulator 3 has a quality problem, the unstable pressing force will affect the circulator 3, and the connection of the circulator 3 is unstable in the subsequent use process, so it is necessary to simulate and detect the circulator 3 before leaving the factory.

[0038] It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, in the drawings, the thickness of the components can be exaggerated or reduced for effective description of the technical content.

[0039] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0040] As shown in Figure 1 At least one embodiment provides a circulator detection tool, which comprises a bearing plate 1, a detection mechanism, a driving mechanism 4, an inflation assembly 5 and a control module, and the control module is electrically connected with the driving mechanism 4 and the inflation assembly 5.

[0041] In this embodiment, the control module can but is not limited to use PLC; the driving mechanism 4 can but is not limited to use a three-axis sliding table; and the inflation assembly 5 can but is not limited to use an air pump.

[0042] As shown in Figure 2 In some embodiments, the circulator 3 is bonded by the grounding substrate 31 and the ferrite 32 through the conductive adhesive 33, the grounding substrate 31 is located below, and the ferrite 32 is located above.

[0043] As shown in Figure 3 , Figure 4 In some embodiments, a plurality of groove positions 11 for placing the circulator 3 are formed on the bearing plate 1.

[0044] As shown in Figure 5 In some embodiments, the cross-sectional shape of the groove position 11 is adapted to the cross-sectional shape of the grounding substrate 31, and the grounding substrate 31 of the circulator 3 is located in the groove position 11, so as to position the position of the circulator 3 and prevent the translation of the circulator 3 under stress.

[0045] As shown in Figure 6 , Figure 7As shown, in some embodiments, the detection mechanism includes: a detection cover 2, which has a plurality of exhaust channels 21. The inlet 211 of the exhaust channel 21 is located on the inner wall of the detection cover 2, and each exhaust channel 21 is provided with an independent flow sensor 23. Each flow sensor 23 is electrically connected to the control module.

[0046] In some embodiments, the drive mechanism 4 is connected to the detection cover 2, and the control module is configured to control the drive mechanism 4 to drive the detection cover 2 to cover the slot 11, thereby forming a chamber between the slot 11 and the detection cover 2.

[0047] In some embodiments, the inflation assembly 5 is connected to the detection cover 2, and the control module is configured to control the inflation assembly 5 to inflate the detection cover 2.

[0048] In this embodiment, the working process of the equipment is as follows: the drive mechanism 4 drives the detection cover 2 to cover the slot 11 to form a detection chamber; then the inflation component 5 is controlled to inflate the detection cover 2, so that the airflow impacts the upper surface of the ferrite 32 in the first state, thereby simulating that the ferrite 32 is subjected to unstable pressure, and at the same time the airflow will be discharged from each exhaust channel 21; after the ferrite 32 is pressurized for a period of time, the inflation component 5 is controlled to make the airflow impact the upper surface of the ferrite 32 in the second state, thereby simulating that the ferrite 32 is subjected to stable pressure. At this time, the flow sensor 23 in each exhaust channel 21 collects data and sends it, so that the control module can determine whether the parallelism of the ferrite 32 is qualified according to the difference between the maximum flow data and the minimum flow data.

[0049] Specifically, the airflow in the first state is an airflow with disordered velocity and disordered flow rate. This airflow impacts the upper surface of the ferrite 32, which can simulate the unstable pressure experienced by the ferrite 32.

[0050] Specifically, the airflow in the second state is a constant flow rate and constant flow volume. This airflow impacts the upper surface of the ferrite 32, which can simulate the ferrite 32 being subjected to stable pressure.

[0051] like Figure 8 As shown, in some embodiments, the ferrite 32 of the circulator 3 is located inside the detection cover 2, and the inner diameter of the detection cover 2 is larger than the diameter of the ferrite 32, thereby preventing the ferrite 32 from being stuck when tilted under force.

[0052] like Figure 7 , Figure 8 As shown, in some embodiments, a groove 24 is provided below each inlet 211, and an "L"-shaped baffle 25 is slidably disposed in the groove 24; wherein the lower end of the "L"-shaped baffle 25 protrudes from the groove 24.

[0053] like Figure 7As shown, in some embodiments, the inlets 211 of each exhaust channel 21 are evenly distributed along the circumference of the detection cover 2 and are located at the same height.

[0054] In this embodiment, when the detection cover 2 covers the slot 11, the lower end of the "L"-shaped baffle 25 abuts against the upper surface of the ferrite 32, and the upper end of the "L"-shaped baffle 25 blocks part of the inlet 211; when the parallelism of the ferrite 32 is qualified, the upper ends of each "L"-shaped baffle 25 are at the same height, that is, the area of ​​each inlet 211 that is blocked is the same.

[0055] like Figure 9 As shown, in some embodiments, when the ferrite 32 is tilted, the height of the left baffle 25 decreases and the height of the right baffle 25 increases, that is, the cross-sectional area of ​​the left inlet 211 increases and the cross-sectional area of ​​the right inlet 211 decreases, thereby changing the airflow in the corresponding exhaust channel 21.

[0056] In some embodiments, the control module first controls the air filling component 5 to impact the surface of the ferrite 32 with an airflow of disordered velocity and flow rate, so that the ferrite 32 is subjected to unstable pressure, that is, to simulate the stress situation of the ferrite 32 when the equipment vibrates; then controls the air filling component 5 to impact the surface of the ferrite 32 with an airflow of constant velocity and flow rate, so that the ferrite 32 is subjected to unstable pressure, that is, to simulate the stress situation of the ferrite 32 when the equipment is in normal working condition; then controls each flow sensor 23 to acquire the flow data in the corresponding exhaust channel, and judges whether the parallelism of the ferrite 32 is qualified based on the difference between the maximum flow data and the minimum flow data.

[0057] In this embodiment, when the parallelism of ferrite 32 is qualified, such as Figure 8 As shown, the exposed areas of the inlet 211 of each exhaust channel 21 are the same, and the gas enters each exhaust channel 21 relatively uniformly. At this time, the flow data obtained by each flow sensor 23 are similar. When the parallelism of the ferrite 32 is not up to standard, the ferrite 32 tilts, as shown. Figure 9 As shown, the exposed areas of the inlet 211 of each exhaust channel 21 are different, some large and some small, that is, the gas flow rate entering each exhaust channel 21 is different, and the flow data obtained by each flow sensor 23 are very different.

[0058] In some embodiments, the control module is configured to determine that the parallelism of the ferrite 32 is unqualified when the difference between the maximum flow rate data and the minimum flow rate data is greater than a threshold.

[0059] Optionally, the detection cover 2 is provided with ten exhaust channels 21, and ten flow sensors 23 are arranged in the corresponding exhaust channels 21, that is, the control module obtains ten flow data (for example, n1, n2, n3, …, n10), at this time, the control module judges the obtained data, subtracts the maximum flow data (for example, n3 is 7.66) from the minimum flow data (for example, n7 is 5.03) to obtain a difference value (for example, the difference value is 2.63), and then judges the difference value and the threshold value (for example, the threshold value is 0.20), because the difference value 2.63 is greater than the threshold value 0.20, it is judged that the parallelism of the ferrite 32 is unqualified.

[0060] In some embodiments, the control module is configured to judge that the parallelism of the ferrite 32 is qualified when the difference value of the maximum flow data and the minimum flow data is less than the threshold value.

[0061] Optionally, the detection cover 2 is provided with ten exhaust channels 21, and ten flow sensors 23 are arranged in the corresponding exhaust channels 21, that is, the control module obtains ten flow data (for example, n1, n2, n3, …, n10), at this time, the control module judges the obtained data, subtracts the maximum flow data (for example, n3 is 6.13) from the minimum flow data (for example, n7 is 6.06) to obtain a difference value (for example, the difference value is 0.07), and then judges the difference value and the threshold value (for example, the threshold value is 0.20), because the difference value 0.07 is less than the threshold value 0.20, it is judged that the parallelism of the ferrite 32 is qualified.

[0062] In some embodiments, the top of the detection cover 2 is provided with an air inlet channel 22, the air inlet channel 22 is coaxially arranged with the slot 11, and the air charging assembly 5 is connected with the air inlet channel 22.

[0063] In some embodiments, the sliding groove 24 is provided with a blocking strip 26, and the blocking strip 26 is used to prevent the “L”-shaped blocking piece 25 from separating from the sliding groove 24.

[0064] At least one embodiment also provides a detection method of a circulator detection tool, which comprises the following steps: placing a circulator 3 in a slot 11 of a bearing plate 1; controlling a driving mechanism 4 to cover the slot 11 with a detection cover 2 through a control module; controlling an air charging assembly 5 to charge air into the detection cover 2 through the control module, so that the air flow impacts a ferrite 32 of the circulator 3 in a first state to simulate that the ferrite 32 is under pressure; after the ferrite 32 is under pressure, controlling the air charging assembly 5 to charge air into the detection cover 2 through the control module, so that the air flow impacts the ferrite 32 of the circulator 3 in a second state, then controlling each flow sensor 23 to obtain flow data in the corresponding exhaust channel 21, and judging whether the parallelism of the ferrite 32 is qualified according to the difference value of the maximum flow data and the minimum flow data.

[0065] The specific structure and implementation process of the circulator detection tool are described in the above embodiments, and will not be repeated here.

[0066] In some embodiments, the airflow in the first state comprises airflow with disordered flow rate and disordered flow volume; and the airflow in the second state comprises airflow with constant flow rate and constant flow volume.

[0067] In summary, the circulator detection tool and the detection method thereof simulate the stress load of the ferrite 32 on the circulator 3 by inflation, and obtain the flow data in each exhaust passage 21 after the load to detect the parallelism of the ferrite 32, thereby avoiding the unqualified circulator 3 from being shipped out.

[0068] In this document, when a first element is referred to as being on a second element, it can be directly on the second element or a third element can be interposed therebetween.

[0069] In this document, when an element or layer is referred to as being "on", "engaged to", "connected to", "attached to", or "coupled to" another element or layer, it can be directly on, engaged, connected, attached, or coupled to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on", "directly engaged to", "directly connected to", "directly attached to", or "directly coupled to" another element or layer, there are no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., "between" versus "directly between", "adjacent" versus "directly adjacent", etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0070] In this document, example embodiments of the disclosure will be described in greater detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of", when preceded by the term comprising, modifies the phrase "comprising a list of two or more elements" such that any and all combinations of one or more of the elements in the list are covered. For example, "at least one of a, b, and c" would cover a, b, c, a and b, a and c, b and c, or a, b, and c.

[0071] The terminology used herein is for the purpose of describing particular example configurations only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" can be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order of performance. Additional or alternative steps can be employed.

[0072] As used herein, the phrases "in an embodiment," "according to an embodiment," "in some embodiments," and the like generally mean the particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of the present disclosure. Thus, appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. As used herein, the term "example" or "exemplary" means "serving as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Rather, the use of the terms "example" or "exemplary" is intended to present concepts in a concrete manner.

[0073] In the description of the present application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, terms such as "first", "second" and other numerical terms are used herein without implying a sequence or order, unless the context clearly indicates otherwise. Therefore, the first element, component, region, layer or section discussed above can be referred to as the second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0075] Spatially relative terms, such as "inner," "outer," "beneath," "below," "lower," "above," "upper," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0076] In the above discussion, unless otherwise stated, the terms "about," "approximately," "substantially" and the like mean a variation of + / - 10% when used to describe a numerical value.

[0077] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant personnel can certainly make various changes and modifications within the scope of not deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A circulator detection fixture, characterized by, The utility model relates to a ring detector tool, including: a bearing plate (1) with a plurality of slots (11) for placing ringers (3) on it; wherein the ringers (3) are formed by the adhesion of ferrite (32) and grounding substrate (31) through conductive glue (33); a detection mechanism, which includes a detection cover (2) with a plurality of exhaust channels (21), the inlet (211) of the exhaust channel (21) is located on the inner wall of the detection cover (2), and a flow sensor (23) is arranged in the exhaust channel (21); a driving mechanism (4) connected to the detection cover (2); an inflation assembly (5) connected to the detection cover (2); a control module; wherein the control module is configured to control the driving mechanism (4) to move the detection cover (2) to cover the slot (11); the control module is further configured to control the inflation assembly (5) to inflate the detection cover (2), so that the airflow impacts the ferrite (32) of the ringer (3) in a first state to simulate the ferrite (32) under pressure; the control module is further configured to control the inflation assembly (5) to inflate the detection cover (2) after the ferrite (32) is under pressure, so that the airflow impacts the ferrite (32) of the ringer (3) in a second state, then control each flow sensor (23) to obtain the flow data in the corresponding exhaust channel (21), and determine whether the parallelism of the ferrite (32) is qualified according to the difference between the maximum flow data and the minimum flow data; the airflow in the first state includes airflow with disordered flow rate and disordered flow; wherein the control module is configured to control the inflation assembly (5) to impact the upper surface of the ferrite (32) with airflow of disordered flow rate and disordered flow, i.e. to simulate the ferrite (32) under unstable pressure; the airflow in the second state includes airflow with constant flow rate and constant flow; wherein the control module is configured to control the inflation assembly (5) to impact the ferrite (32) with airflow of constant flow rate and constant flow after the ferrite (32) is under pressure, to simulate the ferrite (32) under stable pressure, then control each flow sensor (23) to obtain the flow data in the corresponding exhaust channel (21), and determine whether the parallelism of the ferrite (32) is qualified according to the difference between the maximum flow data and the minimum flow data; a chute (24) is formed below each inlet (211), and an "L"-shaped baffle (25) is slidably arranged in the chute (24); wherein the lower end of the "L"-shaped baffle (25) protrudes out of the chute (24); when the detection cover (2) covers the slot (11), the lower end of the "L"-shaped baffle (25) abuts against the upper surface of the ferrite (32), and the upper end of the "L"-shaped baffle (25) blocks part of the inlet (211).

2. The ring detector tool according to claim 1, wherein each inlet (211) is uniformly distributed along the circumference of the detection cover (2) and located at the same height; wherein the control module is configured to determine that the parallelism of the ferrite (32) is unqualified when the difference between the maximum flow data and the minimum flow data is greater than a threshold value.

3. The circulator detection tool of claim 2, wherein, the top of the detection cover (2) is provided with an air inlet channel (22), and the air charging assembly (5) is connected to the air inlet channel (22); wherein, when the detection cover (2) covers the slot (11), the air inlet channel (22) is coaxially arranged with the slot (11).

4. The circulator detection tool of claim 3, wherein, the shape of the slot (11) is adapted to the grounding substrate (31) of the circulator (3) to position the circulator (3), and the inner diameter of the detection cover (2) is greater than the diameter of the ferrite (32); wherein the grounding substrate (31) is located in the slot (11); the ferrite (32) is located in the detection cover (2).

5. The circulator detection tool of claim 4, wherein, the slide groove (24) is provided with a blocking strip (26); wherein the blocking strip (26) is used to prevent the "L" shaped blocking piece (25) from being separated from the slide groove (24).

6. A method of detecting a circulator detection tool according to any one of claims 1 to 5, characterized in that, including: placing the circulator (3) in the slot (11) of the bearing plate (1); controlling the driving mechanism (4) to drive the detection cover (2) to cover the slot (11) through the control module; controlling the air charging assembly (5) to charge air into the detection cover (2) through the control module, so that the airflow impacts the ferrite (32) of the circulator (3) in a first state to simulate the ferrite (32) under load pressure; after the ferrite (32) is under load pressure, the air charging assembly (5) is controlled to charge air into the detection cover (2) through the control module, so that the airflow impacts the ferrite (32) of the circulator (3) in a second state, then the control each flow sensor (23) obtains the flow data in the corresponding exhaust channel (21), and according to the difference between the maximum flow data and the minimum flow data, it is judged whether the parallelism of the ferrite (32) is qualified.

7. The detection method of claim 6, wherein, the airflow in the first state includes: airflow with disordered flow rate and disordered flow rate; the airflow in the second state includes: airflow with constant flow rate and constant flow rate.

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