CN210700826U

CN210700826U - Magnetostrictive ultrasonic valve

Info

Publication number: CN210700826U
Application number: CN201920738156.8U
Authority: CN
Inventors: 王正洪; 严柏平; 杨撞; 周繁华; 方许波; 王寿灵; 王正龙
Original assignee: Hangzhou Waring Mechanical And Electrical Co ltd
Current assignee: Hangzhou Waring Mechanical And Electrical Co ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-06-09
Anticipated expiration: 2029-05-22

Abstract

The utility model discloses a magnetostrictive ultrasonic valve, including the valve body, the end cover, giant magnetostrictive drive element includes first giant magnetostrictive drive element and the giant magnetostrictive drive element of second, and first giant magnetostrictive drive element and the giant magnetostrictive drive element of second are placed in the valve body, and seal fixedly through the end cover, and giant magnetostrictive drive element contains giant magnetostrictive material, excitation coil, preceding quality piece, becomes width of cloth pole and ring flange, the utility model discloses magnetostrictive ultrasonic valve has characteristics such as small, compact structure, two sets of ultrasonic vibration components of adoption in valve body structure to realize more powerful high-speed rivers output, have better using value in aspects such as ultrasonic cleaning, dust removal scale removal.

Description

Magnetostrictive ultrasonic valve

Technical Field

The utility model relates to an supersound valve field especially relates to a magnetostrictive ultrasonic valve.

Background

In recent years, ultrasonic energy and devices thereof have attracted much attention, and related device applications have become a breakthrough for solving the bottleneck problem in the industrial field, such as applications of ultrasonic cleaning in the fields of dust removal, descaling, rust removal and the like. The ultrasonic energy is utilized to accelerate the water flow containing the abrasive, so that the problem that the existing high-pressure water gun has dependence on a huge pressurizing device and is a hot point difficulty in the field of ultrasonic cleaning in recent years is solved.

The high pressure water gun realizes the acceleration of the water flow speed driven by high pressure mainly by the change of the sectional area in the water gun structure. However, the working mode has strong dependence on a high-voltage driving device, is not beneficial to portable application, has poor maneuvering performance and greatly weakens the popularization and application of the high-voltage driving device in the industry; meanwhile, the existing device is difficult to meet the requirement of high-speed water flow output under a small-volume structure. Aiming at the requirement, the patent provides that a giant magnetostrictive material is adopted to generate ultrasonic energy so as to accelerate water flow containing abrasive and expand the engineering application of ultrasonic water jet in the fields of industrial dust removal, descaling, rust removal and the like. Based on this thinking, this patent has proposed a magnetostrictive ultrasonic valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a magnetostrictive ultrasonic valve.

A magnetostrictive ultrasonic valve comprises a valve body, an end cover and a giant magnetostrictive driving element, wherein the giant magnetostrictive driving element comprises a first giant magnetostrictive driving element and a second giant magnetostrictive driving element, the first giant magnetostrictive driving element and the second giant magnetostrictive driving element are placed in the valve body and are sealed and fixed through the end cover, a grinding material flow passage, a fluid flow passage, a mixing cavity, an accelerating cavity and an injection cavity are respectively arranged on the central line of the valve body from left to right, the giant magnetostrictive driving element comprises a giant magnetostrictive material, an excitation coil, a front mass block, a horn and a flange plate, the giant magnetostrictive material is positioned in the center of the excitation coil, the giant magnetostrictive material and the excitation coil are encapsulated at the bottom end of the front mass block through epoxy, the horn is welded at the other end of the front mass block, and the flange plate is bonded at the end of the front mass block.

Preferably, the valve body, the end cover, the front mass block and the flange are made of high-strength high-permeability 10# steel, the giant magnetostrictive material is TbDyFe alloy, and the amplitude transformer is made of non-magnetic amorphous alloy.

Preferably, the excitation coil is an electric signal of 'direct current + alternating current' so as to meet the requirements of the industrial application on the matched application of the valve at various flow rates, the direct current generates a constant magnetic field of about 20-40kA/m, the alternating current adopts positive sine waves, the current amplitude generates a peak-to-peak alternating magnetic field of about 10-20kA/m, the frequency of the alternating current is selected to be a first-order resonance mode frequency of 20-30kHz, and the first giant magnetostrictive driving element and the second giant magnetostrictive driving element are in a resonance state when the valve works.

Preferably, the debugging specification of the single giant magnetostrictive driving element is as follows, ① excitation coils are connected with direct current signals with the equivalent value of 30kA/m, ② alternating current signals with the equivalent value of 10kA/m are connected on the basis of the direct current signals, frequency sweep test is carried out to complete primary resonance mode/frequency screening of the valve structure between 20kHz and 30kHz, ③ amplitude of alternating current signals with the equivalent value of 10kA/m to 20kA/m is adjusted under primary resonance frequency to summarize the drift range of primary resonance frequency and to determine the optimal working frequency, ④ adjusts the magnitude of direct current under the optimal working frequency to obtain the maximum power output point as the target to complete correction of alternating frequency, ⑤ repeats the third step and the fourth step to complete optimal debugging of excitation coil current signals in the single giant magnetostrictive driving element structure, in the valve structure, the influence of mutual coupling between a first giant magnetostrictive driving element and a second giant magnetostrictive driving element on resonance frequency is considered, and the debugging method is that the influence of the mutual coupling between the first giant magnetostrictive driving element and the second giant magnetostrictive driving element and the direct current signals in the alternating current driving element is properly corrected

Preferably, the super magnetostrictive material and the front mass block have the same mass M, the mass block and the flange plate are matched with each other in a small clearance mode and are bonded and fixed through structural adhesive, the amplitude transformer adopts a three-stage amplitude transformer structure, and the diameter of the end part of each stage of the amplitude transformer is d1: d2: d3: d4=1:0.4:0.16: 0.032.

Preferably, the operation method of the valve structure is as follows, under the action of a direct-current magnetic field and an alternating magnetic field generated by the excitation coil, the giant magnetostrictive material generates ultrasonic vibration energy to drive the mass block to generate high-frequency vibration, ultrasonic energy is generated through the amplitude transformer, the ultrasonic high-speed ejection of fluid is realized in the ejection cavity, meanwhile, water flows reach the mixing cavity through the fluid flow channel, the abrasive material is mixed with the water flows in the mixing cavity through the abrasive material flow channel, and the mixed liquid is ejected from the valve port through the acceleration cavity and the ejection cavity.

Compared with the prior art, the utility model beneficial effect who has:

the magnetostrictive ultrasonic valve provided by the utility model mainly utilizes the superior magnetic machine coupling characteristic and high energy conversion efficiency of the giant magnetostrictive material, thereby facilitating the small-sized and high-performance design of the ultrasonic transducer; meanwhile, ultrasonic energy generated by the device can further accelerate water flow containing abrasive materials so as to meet the requirements of dust removal and rust removal on the high-pressure water gun in industrial application.

The utility model discloses a magnetostrictive ultrasonic valve, its rivers that just have traditional valve structure function with higher speed itself adopts two magnetostrictive drive elements in valve exit position simultaneously, realizes the high-speed output of supersound of spraying intracavity rivers.

The utility model discloses a magnetostrictive ultrasonic valve, compact structure, easily installation is dismantled, writes can with current valve structure butt joint, adopts the working method of "direct current + alternating current" signal of telecommunication, can satisfy the engineering application demand of wide velocity of flow regulation among the current valve structure.

Drawings

FIG. 1 is a front view of a magnetostrictive ultrasonic valve structure;

FIG. 2 is a schematic view of another orientation of the magnetostrictive ultrasonic valve;

fig. 3 is a structural view of a giant magnetostrictive drive element.

Detailed Description

A magnetostrictive ultrasonic valve comprises a valve body 01, an end cover 02 and a giant magnetostrictive driving element 03, wherein the giant magnetostrictive driving element 03 comprises a first giant magnetostrictive driving element 03-1 and a second giant magnetostrictive driving element 03-2, and the first giant magnetostrictive driving element 03-1 and the second giant magnetostrictive driving element 03-2 are placed in the valve body 01 and are sealed and fixed through the end cover 02. The center line of the valve body 01 is provided with an abrasive flow passage 04, a fluid flow passage 05, a mixing chamber 06, an accelerating chamber 07 and an injection chamber 08 from left to right.

The giant magnetostrictive driving element 03 comprises a giant magnetostrictive material 031, an excitation coil 032, a front mass block 033, a variable amplitude rod 034 and a flange 035, wherein the giant magnetostrictive material 031 is located at the center of the excitation coil 032, the giant magnetostrictive material 031 and the excitation coil 032 are encapsulated at the bottom end of the front mass block 033 through epoxy, the variable amplitude rod 034 is welded at the other end of the front mass block 033, and the flange 035 is bonded at the end part of the front mass block 033.

The valve body 01, the end cover 02, the front mass block 033 and the flange 035 are made of high-strength high-permeability 10# steel; the giant magnetostrictive material 031 is made of TbDyFe alloy; the amplitude transformer 034 is made of non-magnetic amorphous alloy material.

The giant magnetostrictive material 031 has the same mass M as the front mass 033. The mass block 033 is fitted with the flange 035 with a small gap, and is bonded and fixed by structural adhesive. The amplitude transformer 034 adopts a three-stage amplitude-changing structure, and the end diameter of each stage of amplitude transformer is d1: d2: d3: d4=1:0.4:0.16: 0.032.

The exciting coil 032 selects an electrical signal of "dc + alternating current" to meet the requirement of matching application of valves at various flow rates in industrial application. The direct current generates a constant magnetic field of 20-40kA/m, the alternating current adopts a positive sine wave, the amplitude of the current generates a peak-to-peak alternating magnetic field of 10-20kA/m, and the frequency of the alternating current is selected as a first-order resonant mode frequency of 20-30 kHz. When the valve works, the first giant magnetostrictive driving element 03-1 and the second giant magnetostrictive driving element 03-2 are in a resonance state.

The debugging specification of the single giant magnetostrictive driving element 03 is as follows, ① direct current signals with the equivalent value of 30kA/m are introduced into a magnet exciting coil 032, ② alternating current signals with the equivalent value of 10kA/m are introduced on the basis of the direct current signals, frequency sweep test is carried out, primary resonance mode/frequency screening of the valve structure between 20kHz and 30kHz is completed, ③ amplitude of the alternating current signals with the equivalent value of 10kA/m to 20kA/m is adjusted under primary resonance frequency, drift range of the primary resonance frequency is summarized, optimal working frequency is determined, ④ adjusts the size of direct current under the optimal working frequency, the maximum power output point is obtained to complete correction of alternating frequency, ⑤ repeats steps three and four to complete optimal debugging of current signals of the magnet exciting coil 032 in the single giant magnetostrictive driving element 03 structure, in the valve structure, the influence of mutual coupling between a first giant magnetostrictive driving element 03-1 and a second giant magnetostrictive driving element 03-2 on harmonic frequency is considered, and the debugging method is that the influence of the first giant magnetostrictive driving element 03-1 and the second magnetostrictive driving element 03-2 on the alternating current signals in the single giant magnetostrictive driving element 03-2 is completed.

The working method of the valve structure is as follows, under the action of the direct-current magnetic field and the alternating magnetic field generated by the excitation coil 032, the giant magnetostrictive material 031 generates ultrasonic vibration energy to drive the mass block 033 to generate high-frequency vibration, and ultrasonic energy is generated through the amplitude transformer 034 to realize ultrasonic high-speed ejection of fluid in the ejection cavity 08; meanwhile, the water flow reaches the mixing cavity 06 through the fluid flow passage 05, the abrasive is mixed with the water flow in the mixing cavity 06 through the abrasive flow passage 04, and the mixed liquid is ejected from the valve port through the accelerating cavity 07 and the ejecting cavity 08.

Claims

1. The magnetostrictive ultrasonic valve is characterized by comprising a valve body (01), an end cover (02) and a giant magnetostrictive driving element (03), wherein the giant magnetostrictive driving element (03) comprises a first giant magnetostrictive driving element (03-1) and a second giant magnetostrictive driving element (03-2), the first giant magnetostrictive driving element (03-1) and the second giant magnetostrictive driving element (03-2) are placed in the valve body (01) and are sealed and fixed through the end cover (02), a grinding material flow channel (04), a fluid flow channel (05), a mixing cavity (06), an accelerating cavity (07) and a spraying cavity (08) are respectively arranged on the central line of the valve body (01) from left to right, and the giant magnetostrictive driving element (03) comprises a giant magnetostrictive material (031), an excitation coil (032), a front mass block (033), The magnetic excitation coil structure comprises an amplitude transformer (034) and a flange plate (035), wherein a giant magnetostrictive material (031) is located in the center of an excitation coil (032), the giant magnetostrictive material (031) and the excitation coil (032) are encapsulated at the bottom end of a front mass block (033) through epoxy, the amplitude transformer (034) is welded at the other end of the front mass block (033), and the flange plate (035) is bonded at the end of the front mass block (033).

2. The magnetostrictive ultrasonic valve according to claim 1, wherein the valve body (01), the end cover (02), the front mass block (033) and the flange plate (035) are made of high-strength high-permeability 10# steel, the giant magnetostrictive material (031) is made of TbDyFe alloy, and the amplitude transformer (034) is made of non-magnetic amorphous alloy.

3. A magnetostrictive ultrasonic valve according to claim 1, characterized in that the exciting coil (032) is selected from "dc + ac current" electrical signals to meet the requirements of industrial applications for valve applications at various flow rates, the dc current generates a constant magnetic field of about 20-40kA/m, the ac current uses positive-going waves, the amplitude of the current generates an ac magnetic field with a peak-to-peak value of about 10-20kA/m, the frequency of the ac current is selected from a first-order resonant mode frequency of 20-30kHz, and the first and second magnetostrictive driving elements (03-1, 03-2) are in resonance when the valve is in operation.

4. A magnetostrictive ultrasonic valve according to claim 1, characterized in that the magnetostrictive material (031) has the same mass M as the front mass (033); the mass block (033) and the flange plate (035) are matched with each other in a small clearance mode and are fixedly bonded through structural adhesive, the amplitude transformer (034) adopts a three-stage amplitude-changing structure, and the diameter of the end portion of each stage of amplitude transformer is d1: d2: d3: d4=1:0.4:0.16: 0.032.