阅读说明：本技术 一种铁氧体居里温度测量装置及方法 (Ferrite Curie temperature measuring device and method ) 是由 马学龙 顾春健 杨宋兵 李慧勇 于 2021-10-29 设计创作，主要内容包括：一种铁氧体居里温度测量装置,包括烘箱,所述烘箱的顶面向其内腔体开设有插样口,所述烘箱的顶面位于所述插样口一侧置放有用于测试铁氧体磁环居里温度的LCR电桥测试仪,所述铁氧体磁环上绕制有测温线,所述测温线的引出端分别通过测试夹对应夹持,所述测试夹通过数据线与所述LCR电桥测试仪的电感值测试端口连接,所述铁氧体磁环自所述插样口插入所述烘箱的内腔体；所述烘箱安装于可定位升降的设备置放平台上。本发明可以根据不同身高的实验人员,合理调节设备置放平台的高度,从而使得整个测量装置的操作与观测变得方便。(A ferrite Curie temperature measuring device comprises an oven, wherein a sample inserting port is formed in the top surface of the oven towards the inner cavity of the oven, an LCR bridge tester for testing the Curie temperature of a ferrite magnetic ring is placed on one side of the sample inserting port in the top surface of the oven, temperature measuring wires are wound on the ferrite magnetic ring, leading-out ends of the temperature measuring wires are correspondingly clamped through test clamps respectively, the test clamps are connected with an inductance value test port of the LCR bridge tester through data wires, and the ferrite magnetic ring is inserted into the inner cavity of the oven from the sample inserting port; the oven is arranged on the equipment placing platform which can be positioned and lifted. The height of the equipment placing platform can be reasonably adjusted according to experimenters with different heights, so that the operation and observation of the whole measuring device are convenient.)

1. A ferrite Curie temperature measuring device is characterized in that: the device comprises an oven, wherein a sample inserting port is formed in the top surface of the oven towards the inner cavity of the oven, an LCR bridge tester for testing the Curie temperature of a ferrite magnetic ring is placed on one side of the sample inserting port in the top surface of the oven, temperature measuring wires are wound on the ferrite magnetic ring, leading-out ends of the temperature measuring wires are correspondingly clamped through test clamps respectively, the test clamps are connected with an inductance value test port of the LCR bridge tester through data wires, and the ferrite magnetic ring is inserted into the inner cavity of the oven from the sample inserting port;

the oven is arranged on the equipment placing platform capable of being positioned and lifted, the equipment placing platform comprises supporting components which are vertically and oppositely arranged, a storage component for placing the oven is horizontally arranged between the two supporting components, the end part of the storage component is in sliding connection with the corresponding supporting component through a connecting component, and the supporting component can drive the storage component to be positioned, lifted and moved.

2. The ferrite curie temperature measurement device of claim 1, wherein: the supporting assembly comprises a horizontally arranged bottom plate, the bottom plate is of a rectangular structure, supporting round rods are respectively and vertically and symmetrically arranged at two ends of the top surface of the bottom plate, the top ends of the two supporting round rods are bridged through a horizontally arranged top plate, a screw rod is vertically arranged between the top plate and the middle part of the bottom plate, two positioning nuts are screwed on the screw rod, the screw rod is in clearance cross connection with the end part of the object placing assembly, and the upper side and the lower side of the end part of the object placing assembly are respectively clamped and connected through the positioning nuts; the two sides of the end part of the article placing component are respectively connected with the corresponding supporting round rods in a sliding manner through the connecting components.

3. A ferrite curie temperature measurement device as claimed in claim 2, wherein: the anti-skidding foot pads of isosceles trapezoid structures are vertically and symmetrically arranged at two ends of the bottom surface of the bottom plate respectively.

4. A ferrite curie temperature measurement device as claimed in claim 2, wherein: the object placing assembly comprises an object placing flat plate with a rectangular structure, the middle part of the end surface of the object placing flat plate is respectively and integrally and horizontally butted with a convex plate, a first through hole is formed in the middle of the convex plate in a penetrating mode, and the convex plate is in clearance cross connection with the corresponding screw rod through the first through hole; the two sides of the convex plate are respectively and symmetrically provided with the connecting components.

5. The ferrite curie temperature measurement device of claim 4, wherein: limiting plates are vertically and symmetrically arranged on two sides of the top surface of the object placing flat plate respectively, and the distance between the two limiting plates is matched with the size of the oven; a plurality of heat dissipation holes are formed in the object placing flat plate between the two limiting plates in a penetrating mode.

6. The ferrite curie temperature measurement device of claim 4, wherein: the connecting assembly comprises a connecting block with a rectangular structure, a second through hole penetrates through the middle of the connecting block, the connecting block is connected with the corresponding supporting round rod in a sliding mode through the second through hole, and a plug board is integrally and horizontally butted on the side face, facing the object placing flat plate, of the connecting block; the end faces of the object placing flat plates on the two sides of the convex plate are respectively symmetrically and inwards provided with slots which are matched with the corresponding inserting plates in an inserting manner.

7. The ferrite curie temperature measurement device of claim 1, wherein: the oven is provided with a feedback control link module, a temperature control panel, an alarm module and a power switch, the temperature control panel is arranged at the front end of the feedback control link module, and the feedback control link module is electrically connected with the alarm module and the internal test module of the LCR bridge tester through cables respectively;

when the inductance test value of the LCR bridge tester rises to the maximum value and then falls to half of the maximum value of the inductance test value, the feedback control link module receives Curie temperature data from the LCR bridge tester, displays and records the data through the temperature control panel, controls the temperature control panel to keep warm and controls the alarm module to give an alarm.

8. The ferrite Curie temperature measurement method according to claim 7, comprising the steps of:

step S1: winding the temperature measuring wire on a ferrite bead to be tested, winding ten turns, and putting the ferrite bead with the temperature measuring wire wound in a baking oven;

step S2: clamping the connectors at the two ends of the temperature measuring wire through corresponding test clamps respectively, and connecting the data wire into an inductance value test port of the LCR bridge tester;

step S3: the temperature value is set through the temperature control panel of oven, and the switch who opens the oven begins to heat up, and along with the increase of temperature in the oven, the inductance test value of LCR bridge tester can increase always, before increasing to the Curie temperature, can sharply fall, when inductance value is zero, then for the Curie temperature point, nevertheless because of the coiling of temperature measurement line, lead to can not falling to zero, so set for: and when the inductance test value rises to the maximum value and then falls to half of the maximum value of the inductance test value, starting heat preservation and alarming.

Technical Field

The invention belongs to the technical field of ferrite, and particularly relates to a ferrite Curie temperature measuring device and method.

Background

The curie temperature is the transition temperature at which a ferrite material changes from ferromagnetic (or ferrimagnetic) to paramagnetic, generally denoted as Tc; the Curie temperature is a physical quantity representing the basic characteristics of magnetic materials such as ferrite and the like, and the determination of the Curie temperature of the magnetic materials such as ferrite and the like has very important significance not only for the research and development of magnetic materials and magnetic devices, but also for the application of engineering technology. The existing ferrite Curie temperature measuring device is generally placed on a fixed equipment placing platform when in use, so that the operation and observation are inconvenient for experimenters with different heights, and improvement is needed urgently.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a ferrite Curie temperature measuring device and a method, and the specific technical scheme is as follows:

a ferrite Curie temperature measuring device comprises an oven, wherein a sample inserting port is formed in the top surface of the oven towards the inner cavity of the oven, an LCR bridge tester for testing the Curie temperature of a ferrite magnetic ring is placed on one side of the sample inserting port in the top surface of the oven, temperature measuring wires are wound on the ferrite magnetic ring, leading-out ends of the temperature measuring wires are correspondingly clamped through test clamps respectively, the test clamps are connected with an inductance value test port of the LCR bridge tester through data wires, and the ferrite magnetic ring is inserted into the inner cavity of the oven from the sample inserting port;

the oven is arranged on the equipment placing platform capable of being positioned and lifted, the equipment placing platform comprises supporting components which are vertically and oppositely arranged, a storage component for placing the oven is horizontally arranged between the two supporting components, the end part of the storage component is in sliding connection with the corresponding supporting component through a connecting component, and the supporting component can drive the storage component to be positioned, lifted and moved.

Furthermore, the supporting assembly comprises a horizontally arranged bottom plate, the bottom plate is of a rectangular structure, supporting round rods are respectively and vertically and symmetrically arranged at two ends of the top surface of the bottom plate, the top ends of the two supporting round rods are bridged through a horizontally arranged top plate, a screw rod is vertically arranged between the top plate and the middle part of the bottom plate, two positioning nuts are screwed on the screw rod, the screw rod is in clearance cross connection with the end part of the object placing assembly, and the upper side and the lower side of the end part of the object placing assembly are respectively clamped and connected through the positioning nuts; the two sides of the end part of the article placing component are respectively connected with the corresponding supporting round rods in a sliding manner through the connecting components.

Furthermore, the two ends of the bottom surface of the bottom plate are respectively and vertically and symmetrically provided with anti-skidding foot pads with isosceles trapezoid structures.

The object placing assembly comprises rectangular object placing flat plates, the middle parts of the end faces of the object placing flat plates are respectively and integrally and horizontally butted with convex plates, first through holes are formed in the middle parts of the convex plates in a penetrating mode, and the convex plates are in clearance cross connection with the corresponding screw rods through the first through holes; the two sides of the convex plate are respectively and symmetrically provided with the connecting components.

Furthermore, limiting plates are respectively and vertically and symmetrically arranged on two sides of the top surface of the object placing flat plate, and the distance between the two limiting plates is matched with the size of the oven; a plurality of heat dissipation holes are formed in the object placing flat plate between the two limiting plates in a penetrating mode.

Furthermore, the connecting assembly comprises a connecting block with a rectangular structure, a second through hole penetrates through the middle of the connecting block, the connecting block is in sliding connection with the corresponding supporting round rod through the second through hole, and a plug board is integrally and horizontally butted on the side surface of the connecting block facing the object placing flat plate; the end faces of the object placing flat plates on the two sides of the convex plate are respectively symmetrically and inwards provided with slots which are matched with the corresponding inserting plates in an inserting manner.

Furthermore, a feedback control link module, a temperature control panel, an alarm module and a power switch are arranged on the oven, the temperature control panel is arranged at the front end of the feedback control link module, and the feedback control link module is electrically connected with the alarm module and the internal test module of the LCR bridge tester through cables respectively;

when the inductance test value of the LCR bridge tester rises to the maximum value and then falls to half of the maximum value of the inductance test value, the feedback control link module receives Curie temperature data from the LCR bridge tester, displays and records the data through the temperature control panel, controls the temperature control panel to keep warm and controls the alarm module to give an alarm.

A ferrite Curie temperature measuring method comprises the following steps:

step S1: winding the temperature measuring wire on a ferrite bead to be tested, winding ten turns, and putting the ferrite bead with the temperature measuring wire wound in a baking oven;

step S2: clamping the connectors at the two ends of the temperature measuring wire through corresponding test clamps respectively, and connecting the data wire into an inductance value test port of the LCR bridge tester;

step S3: the temperature value is set through the temperature control panel of oven, and the switch who opens the oven begins to heat up, and along with the increase of temperature in the oven, the inductance test value of LCR bridge tester can increase always, before increasing to the Curie temperature, can sharply fall, when inductance value is zero, then for the Curie temperature point, nevertheless because of the coiling of temperature measurement line, lead to can not falling to zero, so set for: and when the inductance test value rises to the maximum value and then falls to half of the maximum value of the inductance test value, starting heat preservation and alarming.

The invention has the beneficial effects that:

the oven in the ferrite Curie temperature measuring device is arranged on an equipment placing platform which can be positioned and lifted, the end part of a storage component in the equipment placing platform is in sliding connection with a corresponding supporting component through a connecting component, and the supporting component can drive the storage component to be positioned, lifted and moved; therefore, the height of the equipment placing platform can be reasonably adjusted according to experimenters with different heights, so that the operation and observation of the whole measuring device are convenient.

Drawings

FIG. 1 shows a schematic structural diagram of a ferrite Curie temperature measuring device of the present invention;

FIG. 2 is a schematic diagram illustrating a structure of a temperature measuring wire wound by a ferrite bead according to the present invention;

FIG. 3 is a schematic view showing the structure of the ferrite Curie temperature measuring device of the present invention assembled with a device placement platform;

FIG. 4 is a schematic diagram of the support assembly of the device placement platform of the present invention;

FIG. 5 is a perspective view of the storage assembly of the present invention;

fig. 6 shows a schematic perspective view of a connection assembly according to the present invention;

FIG. 7 shows a control link block diagram of the ferrite Curie temperature measurement method of the present invention.

Shown in the figure: 1. an oven; 11. inserting a sample port; 12. a feedback control link module; 13. a temperature control panel; 14. an alarm module; 15. a power switch; 2. an LCR bridge tester; 21. a data line; 22. a test clip; 3. a temperature measuring line; 4. a ferrite bead; 5. a device placement platform; 51. a support assembly; 511. a base plate; 512. anti-skid foot pads; 513. a support round bar; 514. a top plate; 515. a screw; 516. positioning a nut; 517. a spring; 52. an article placing component; 521. placing a flat plate; 5211. heat dissipation holes; 522. a convex plate; 523. a first through hole; 524. a slot; 525. a limiting plate; 53. a connecting assembly; 531. connecting blocks; 532. a second through hole; 533. and (4) inserting plates.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 3, a ferrite curie temperature measuring device includes an oven 1, a sample insertion port 11 is provided on a top surface of the oven 1 toward an inner cavity thereof, an LCR bridge tester 2 for testing curie temperature of a ferrite magnetic ring 4 is disposed on one side of the sample insertion port 11 on the top surface of the oven 1, temperature measuring wires 3 are wound on the ferrite magnetic ring 4, leading-out ends of the temperature measuring wires 3 are correspondingly clamped by test clamps 22, the test clamps 22 are connected with an inductance value test port of the LCR bridge tester 2 through data wires 21, and the ferrite magnetic ring 4 is inserted into the inner cavity of the oven 1 from the sample insertion port 11;

the oven 1 is mounted on an equipment placing platform 5 capable of being positioned and lifted, the equipment placing platform 5 comprises supporting components 51 which are vertically and oppositely arranged, an object placing component 52 used for placing the oven 1 is horizontally arranged between the two supporting components 51, the end part of the object placing component 52 is in sliding connection with the corresponding supporting component 51 through a connecting component 53, and the supporting component 51 can drive the object placing component 52 to be positioned, lifted and moved.

According to the technical scheme, the oven 1 in the ferrite Curie temperature measuring device is arranged on the equipment placing platform 5 which can be positioned and lifted, the end part of the object placing component 52 in the equipment placing platform 5 is in sliding connection with the corresponding supporting component 51 through the connecting component 53, and the supporting component 51 can drive the object placing component 52 to be positioned, lifted and moved; therefore, the height of the equipment placing platform 5 can be reasonably adjusted according to experimenters with different heights, so that the operation and observation of the whole measuring device are convenient.

As shown in fig. 4, the supporting assembly 51 includes a bottom plate 511 arranged horizontally, the bottom plate 511 is a rectangular structure, two ends of the top surface of the bottom plate 511 are respectively and vertically and symmetrically provided with supporting round rods 513, the top ends of the two supporting round rods 513 are bridged by a top plate 514 arranged horizontally, a screw 515 is vertically arranged between the top plate 514 and the middle part of the bottom plate 511, two positioning nuts 516 are screwed on the screw 515, the screw 515 is in clearance connection with the end part of the object placing assembly 52, and the upper and lower sides of the end part of the object placing assembly 52 are respectively clamped and connected by the positioning nuts 516; two sides of the end of the placement component 52 are slidably connected to the corresponding supporting rods 513 through the connecting components 53.

Through the technical scheme, the screw 515 is matched with the two positioning nuts 516, so that the object component 52 can be positioned and lifted; two sides of the end of the placement component 52 are slidably connected with the corresponding supporting round rods 513 through the connecting components 53, so that the stability of the placement component 52 during lifting can be kept.

As shown in fig. 4, two ends of the bottom surface of the bottom plate 511 are respectively vertically and symmetrically provided with an anti-skid foot pad 512 having an isosceles trapezoid structure.

Through the technical scheme, the anti-skid foot pad 512 of the isosceles trapezoid structure can increase the support anti-skid effect of the whole support assembly 51.

As shown in fig. 5, the article placing assembly 52 includes an article placing flat plate 521 with a rectangular structure, the middle parts of the end surfaces of the article placing flat plate 521 are respectively and integrally and horizontally butted with a convex plate 522, a first through hole 523 penetrates through the middle part of the convex plate 522, and the convex plate 522 is in clearance fit with the corresponding screw 515 through the first through hole 523; the connection assemblies 53 are symmetrically arranged on two sides of the convex plate 522 respectively.

By the technical scheme, the object placing flat plate 521 can be used for horizontally supporting the oven 1; the protruding plate 522 is in clearance connection with the corresponding screw 515 through the first through hole 523, and the connecting components 53 are symmetrically arranged on two sides of the protruding plate 522 respectively, so that the positioning and lifting of the object placing flat plate 521 can be realized, and the sliding connection between the connecting components 53 and the corresponding supporting round rods 513 is not hindered.

As shown in fig. 5, two sides of the top surface of the object placing flat plate 521 are respectively and vertically and symmetrically provided with a limiting plate 525, and the distance between the two limiting plates 525 is matched with the size of the oven 1; a plurality of heat dissipation holes 5211 are formed through the object placing flat plate 521 between the two limiting plates 525.

By the technical scheme, the arranged limiting plate 525 can be used for clamping and fixing the oven to keep the stability of the oven; a plurality of heat dissipation holes 5211 are formed through the flat storage plate 521, so that local heat dissipation and cooling of the oven 1 can be realized, and the service life of the oven is prolonged.

As shown in fig. 5 and 6, the connecting assembly 53 includes a connecting block 531 having a rectangular structure, a second through hole 532 is formed through the middle of the connecting block 531, the connecting block 531 is slidably connected to the corresponding supporting round rod 513 through the second through hole 532, and an inserting plate 533 is integrally and horizontally abutted to the side surface of the connecting block 531 facing the object placing flat plate 521; the end surfaces of the object placing flat plate 521 at the two sides of the protruding plate 522 are symmetrically and inwardly provided with slots 524 which are matched with the corresponding inserting plates 533 in an inserting manner.

Through the technical scheme, the inserting plate 533 of the connecting assembly 53 is in inserting fit with the corresponding inserting groove 524, so that the connecting assembly 53 is detachably connected with the object placing plate 521, and the later-stage dismounting and transferring are facilitated.

As shown in fig. 1 and 7, a feedback control link module 12, a temperature control panel 13, an alarm module 14 and a power switch 15 are arranged on the oven 1, the temperature control panel 13 is arranged at the front end of the feedback control link module 12, and the feedback control link module 12 is electrically connected with the alarm module 14 and the internal test module of the LCR bridge tester 2 through cables;

when the inductance test value of the LCR bridge tester 2 rises to the maximum value and then falls to half of the maximum value of the inductance test value, the feedback control link module 12 receives curie temperature data from the LCR bridge tester 2, displays and records the curie temperature data through the temperature control panel 13, controls the temperature control panel 13 to keep warm, and controls the alarm module 14 to give an alarm.

Through the technical scheme, the traditional ferrite Curie temperature measuring device needs one person to record and observe beside equipment until a Curie temperature point appears, so that the labor cost is too high; by establishing a feedback control link module 12 between a temperature control panel 13 of the oven 1 and an internal test module of the LCR bridge tester 2 and adding an alarm module 14, when an inductance test value is reduced to zero, an alarm is automatically given, the temperature is kept not to rise any more, and Curie temperature points are automatically recorded; therefore, one person is not required to record and observe beside the equipment until the Curie temperature point appears, and labor cost is saved.

As shown in fig. 1, 2 and 7, a ferrite curie temperature measuring method includes the steps of:

step S1: winding the temperature measuring wire 3 on a ferrite bead 4 to be tested, winding ten turns, and putting the ferrite bead 4 wound with the temperature measuring wire 3 into the oven 1;

step S2: the joints at the two ends of the temperature measuring wire 3 are respectively clamped by corresponding test clamps 22, and the data wire 21 is connected to the inductance value test port of the LCR bridge tester 2;

step S3: the temperature value is set through the temperature control panel 13 of the oven 1, the power switch 15 of the oven 1 is opened to start heating, along with the increase of the temperature in the oven 1, the inductance test value of the LCR bridge tester 2 can be increased all the time, and can be sharply reduced before the Curie temperature is increased, and when the inductance value is zero, the inductance value is a Curie temperature point, but the inductance value cannot be reduced to zero due to the winding of a temperature measuring line, so that the setting is as follows: and when the inductance test value rises to the maximum value and then falls to half of the maximum value of the inductance test value, starting heat preservation and alarming.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.