High-power ultrasonic magnetostrictive transducer

Abstract

The utility model relates to the field of transducers, in particular to a high-power ultrasonic magnetostrictive transducer. A high-power ultrasonic magnetostrictive transducer comprises a giant magnetostrictive rare earth rod, the giant magnetostrictive rare earth rod is inserted in a special iron core, and the outer side of the special iron core is sleeved with an electromagnetic induction coil. And a pre-tightening force is applied to the giant magnetostrictive rare earth rod. Threads are arranged at the two ends of the special iron core, the two prestressed screws are connected to the two ends of the special iron core through the threads, and the two prestressed screws are pressed on the giant magnetostrictive rare earth rod to apply pretightening force to the giant magnetostrictive rare earth rod. And the special iron core is fixed in the middle of the fixed base. According to the energy converter, the size of the energy converter is reduced under the condition that the output power of the energy converter is guaranteed through a new structural form, and the output power density of the energy converter is improved. A plurality of vibration units can be connected in series, and the defects in the prior art are overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of transducer more particularly, it is a kind of high-power ultrasonic magnetostrictive transducer. BACKGROUND

[0002] Current common high-power transducer is mostly sandwich transducer, which uses amplitude rod and tool head to emit ultrasonic waves longitudinally. Although the transducer of this structure can emit ultrasonic waves with high power density, it is limited by material and its own structure, so the transducer cannot operate efficiently for a long time. There are also circular tube type high-power transducers that can emit radially, but the power density is limited due to size and structure. In recent years, as power ultrasonic equipment becomes popular and develops, the influence of ultrasonic waves on fermentation process is attracting strong interest and high attention. The existing transducer needs to stack many piezoelectric ceramic elements to ensure the output power of the transducer, which is large in size and reduces the power density of the transducer output. It is difficult to connect each vibration unit together, and the overall power output is insufficient. SUMMARY

[0003] To overcome the shortcomings of the prior art, the utility model provides a high-power ultrasonic magnetostrictive transducer, which has the beneficial effects that the transducer of the present application reduces the size of the transducer while ensuring the output power of the transducer, and improves the power density of the transducer output. Multiple vibration units can be connected in series to make up for the shortcomings of the original technology.

[0004] The utility model solves the technical problems by adopting the following technical scheme:

[0005] A high-power ultrasonic magnetostrictive transducer, comprising a super-magnetostrictive rare earth rod, the super-magnetostrictive rare earth rod is inserted into a special iron core, and an electromagnetic induction coil is sleeved on the outside of the special iron core.

[0006] A pre-tightening force is applied to the super-magnetostrictive rare earth rod.

[0007] Both ends of the special iron core are provided with threads, and two pre-stressed screws are connected to both ends of the special iron core through threads, and the two pre-stressed screws press on the super-magnetostrictive rare earth rod to apply a pre-tightening force to the super-magnetostrictive rare earth rod.

[0008] The special iron core is fixed in the middle of the fixed base.

[0009] The special iron core and the fixed base are integrally formed.

[0010] The fixed base, the super-magnetostrictive rare earth rod, the electromagnetic induction coil, the special iron core and the pre-stressed screw form a vibration unit.

[0011] Multiple vibration units are placed in a steel sleeve.

[0012] The two adjacent vibration units are separated by a cylindrical gasket.

[0013] The electromagnetic induction coils on the plurality of vibration units are connected in parallel, and the wires for parallel connection are led out from the end of the steel sleeve.

[0014] The upper and lower ends of the inner side of the steel sleeve are provided with threads, and the upper and lower ends of the inner side of the steel sleeve are connected with the pressing sleeves through threads.

[0015] The beneficial effects of the high-power ultrasonic magnetostrictive transducer are:

[0016] 1. The structure of the vibration unit ensures that the transducer can stably and efficiently output large power density ultrasonic waves;

[0017] 2. The structure of the vibration unit determines that the transducer works in a specific vibration mode, ensuring the service life of the transducer;

[0018] 3. The vibration unit adopts a magnetostrictive transducer, which has good insulation performance, long service life, and is less affected by temperature and pressure. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described in detail below in combination with the drawings and specific implementation methods.

[0020] Figure 1 It is a structure diagram of a high-power ultrasonic magnetostrictive transducer Figure 1 ;

[0021] Figure 2 It is a structure diagram of a high-power ultrasonic magnetostrictive transducer Figure 2 ;

[0022] Figure 3 It is a structure diagram of a high-power ultrasonic magnetostrictive transducer Figure 3 ;

[0023] Figure 4 It is a structure diagram of a high-power ultrasonic magnetostrictive transducer Figure 4 ;

[0024] In the figure: fixed base 1, super magnetostrictive rare earth rod 2, electromagnetic induction coil 3, special iron core 4, pre-stressed screw 5; steel sleeve 6. DETAILED DESCRIPTION

[0025] As Figures 1-4 shown, this example can realize the effect of large transducer power capacity and small size.

[0026] The high-power ultrasonic magnetostrictive transducer includes a super magnetostrictive rare earth rod 2 inserted into a special iron core 4, which is surrounded by an electromagnetic induction coil 3. When the coil is energized, it drives the super magnetostrictive rare earth rod 2 inserted into the special iron core 4 to vibrate. The transducer is made of super magnetostrictive rare earth rods, which are stable in operation and less prone to damage.

[0027] The super magnetostrictive rare earth rod has large power capacity and small size, mainly due to the following factors:

[0028] 1. High magnetostriction coefficient

[0029] The magnetostriction coefficient of rare earth materials is much higher than that of traditional materials, which can produce significant deformation under weak magnetic fields, thus realizing high efficient energy conversion in a small volume.

[0030] 2. High energy density

[0031] The high energy density of rare earth materials allows them to store and release a large amount of energy in a small volume, making them suitable for high-power applications.

[0032] 3. Fast response

[0033] Rare earth materials respond quickly to external magnetic fields, making them suitable for high-frequency and high-power scenarios, further improving power capacity.

[0034] 4. High strength and durability

[0035] Rare earth materials have high mechanical strength and can withstand stress and strain under high power, ensuring long-term stable operation.

[0036] 5. High efficient energy conversion

[0037] The energy conversion efficiency of rare earth materials is high, reducing energy loss and improving overall power output.

[0038] 6. Compact design

[0039] High magnetostriction coefficient and high energy density make the device design more compact, suitable for space-limited applications.

[0040] As shown in the example, it can achieve the effect of enhancing the magnetostrictive effect and improving the energy conversion efficiency. Figures 1-4

[0041] ​Due to the pre-tightening force applied to the giant magnetostrictive rare earth rod 2, the pre-tightening force makes the internal stress distribution of the material more uniform, enhances the magnetostrictive effect, and improves the energy conversion efficiency. The pre-tightening force enhances the mechanical strength of the material, enabling it to withstand greater stress and strain, thereby supporting higher power output. The pre-tightening force optimizes the internal structure of the material, making it respond faster to external magnetic fields, suitable for high-frequency high-power applications. The pre-tightening force reduces the fatigue damage of the material under cyclic loading, prolongs the service life, and ensures the stability of long-term high-power operation.

[0042] As shown in Figures 1-4 , this example can achieve the effect of conveniently applying pre-tightening force to the giant magnetostrictive rare earth rod 2.

[0043] Since the special iron core 4 is provided with threads at both ends, two pre-stressed screws 5 are connected to the two ends of the special iron core 4 through threads, and the two pre-stressed screws 5 press on the giant magnetostrictive rare earth rod 2 to apply pre-tightening force to the giant magnetostrictive rare earth rod 2. By rotating the pre-stressed screw 5 and pressing it on the giant magnetostrictive rare earth rod 2, it is convenient to apply pre-tightening force to the giant magnetostrictive rare earth rod 2.

[0044] As shown in Figures 1-4 , this example can achieve the effect of providing a carrier for the fixed base 1, so that the special iron core 4 can be placed on it.

[0045] Since the special iron core 4 is fixed in the middle of the fixed base 1, the special iron core 4 is integrally formed with the fixed base 1, and the fixed base 1 provides a carrier so that the special iron core 4 can be placed on it.

[0046] As shown in Figures 1-4 , this example can achieve the effect of improving the power density of the transducer output.

[0047] The fixed base 1, the giant magnetostrictive rare earth rod 2, the electromagnetic induction coil 3, the special iron core 4 and the pre-stressed screw 5 form a vibration unit, a plurality of said vibration units are placed in the steel sleeve 6, through the superposition of a plurality of vibration units, the volume of the transducer is reduced under the condition of ensuring the output power of the transducer, and the power density of the transducer output is improved. Multiple vibration units can be connected in series to make up for the shortcomings of the original technology.

[0048] As shown in Figures 1-4 , this example can achieve the effect of preventing multiple vibration units from contacting each other.

[0049] Since the adjacent two vibration units are separated by a cylindrical gasket, the multiple vibration units are prevented from contacting each other, and the multiple vibration units are prevented from affecting each other after contacting.

[0050] As shown in Figures 1-4As shown, this example can achieve the effect of facilitating energization to multiple electromagnetic induction coils 3.

[0051] Because the electromagnetic induction coils 3 on multiple vibration units are in parallel, the wires used for parallel connection are led out from the end of the steel sleeve 6, thereby facilitating energization to multiple electromagnetic induction coils 3.

[0052] As shown, this example can achieve the effect of fixing multiple vibration units in the steel sleeve 6. Figures 1-4

[0053] Because the upper and lower ends of the inner side of the steel sleeve 6 are provided with threads, the upper and lower ends of the inner side of the steel sleeve 6 are connected with pressing sleeves through threads, and the two pressing sleeves are respectively pressed on the upper and lower vibration units, so that multiple vibration units are fixed in the steel sleeve 6 through the two pressing sleeves.​

Claims

1. A high power ultrasonic magnetostrictive transducer comprising a super magnetostrictive rare earth rod (2) characterised in that: The super magnetostrictive rare earth rod (2) is inserted into a special iron core (4), and the outside of the special iron core (4) is sleeved with an electromagnetic induction coil (3).

2. A high power ultrasonic magnetostrictive transducer according to claim 1, characterized in that: The super magnetostrictive rare earth rod (2) is applied with a pre-tightening force.

3. A high power ultrasonic magnetostrictive transducer according to claim 2, characterized in that: The special iron core (4) is provided with threads at both ends, and two pre-stressed screws (5) are threadedly connected at both ends of the special iron core (4) and press on the super magnetostrictive rare earth rod (2) to apply a pre-tightening force to the super magnetostrictive rare earth rod (2).

4. A high power ultrasonic magnetostrictive transducer according to claim 3, characterized in that: The special iron core (4) is fixed at the middle part of a fixed base (1).

5. A high power ultrasonic magnetostrictive transducer according to claim 4, characterized in that: The special iron core (4) is integrally formed with the fixed base (1).

6. A high power ultrasonic magnetostrictive transducer according to claim 5, characterized in that: The fixed base (1), the super magnetostrictive rare earth rod (2), the electromagnetic induction coil (3), the special iron core (4) and the pre-stressed screw (5) form a vibration unit.

7. A high power ultrasonic magnetostrictive transducer according to claim 6, characterized in that: A plurality of the vibration units are placed in a steel sleeve (6).

8. A high power ultrasonic magnetostrictive transducer according to claim 7, characterized in that: Two adjacent vibration units are separated by a cylindrical gasket.

9. A high power ultrasonic magnetostrictive transducer according to claim 8, characterized in that: The electromagnetic induction coils (3) on the plurality of vibration units are connected in parallel, and the wires for parallel connection are led out from the end of the steel sleeve (6).

10. A high power ultrasonic magnetostrictive transducer according to claim 9, characterized in that: The upper and lower ends of the inside of the steel sleeve (6) are provided with threads, and the upper and lower ends of the inside of the steel sleeve (6) are threadedly connected with pressing sleeves, and the two pressing sleeves press on the upper and lower vibration units, respectively.

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