CN117615529A - Longitudinal vibration transducer heat radiation structure and design method thereof - Google Patents
Longitudinal vibration transducer heat radiation structure and design method thereof Download PDFInfo
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- CN117615529A CN117615529A CN202311427812.XA CN202311427812A CN117615529A CN 117615529 A CN117615529 A CN 117615529A CN 202311427812 A CN202311427812 A CN 202311427812A CN 117615529 A CN117615529 A CN 117615529A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005855 radiation Effects 0.000 title claims description 4
- 238000013461 design Methods 0.000 title abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 32
- 230000026683 transduction Effects 0.000 claims abstract description 21
- 238000010361 transduction Methods 0.000 claims abstract description 21
- 230000017525 heat dissipation Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
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- 239000011521 glass Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000012546 transfer Methods 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000028161 membrane depolarization Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The invention provides a heat dissipation structure of a longitudinal vibration transducer and a design method thereof. The longitudinal vibration transducer heat dissipation structure comprises a watertight layer, a front cover plate, a transduction driving element, a prestress bolt, a rear cover plate, an insulating decoupling base, an insulating decoupling heat conduction material and a watertight housing; the front cover plate is arranged at the top of the watertight housing, and the watertight layer is wrapped on the outer side of the front cover plate; the front cover plate, the transduction driving element and the rear cover plate are sequentially arranged from top to bottom. A gap is arranged between the transduction driving element and the watertight housing; an insulating decoupling base and an insulating decoupling heat-conducting material are arranged between the rear cover plate and the watertight housing. According to the invention, the insulating heat-conducting material is laid between the rear cover plate and the watertight housing, so that a means of establishing a heat transfer path between the transducer driving element and the water body is completed, the heat dissipation and heat conduction capacity of the transducer is improved, and the working temperature of the transducer is reduced.
Description
Technical Field
The invention relates to the technical fields of heat dissipation technologies, underwater acoustic transducers and matrixes, marine equipment and underwater speakers, in particular to a longitudinal vibration transducer heat design technology, and particularly relates to a longitudinal vibration transducer heat dissipation structure.
Background
Acoustic waves are the only known energy form capable of being transmitted underwater in a long distance, and with the gradual penetration of human development on ocean and the requirement of military countermeasure, the technical indexes of underwater acoustic equipment such as sonar and the like are also higher and higher, and the higher and higher requirements are put on the transmitting power of a transducer.
The transmitting power limiting factors of the transducer comprise an electric limit, a cavitation limit, a thermal limit, a stress limit and the like, and the thermal limit of the transducer always appears at first in a high-power continuous wave working mode of the transducer, so that the transmitting power limiting factors are important bottleneck points for improving the transmitting power of the transducer. Under the thermal limit, the transducer can exhibit obvious temperature rise, and the temperature rise can cause the adverse effects of unstable signal emission of the transducer, short service life and the like; too high temperature of the transducer can also directly lead to failure of the watertight layer, water leakage and short circuit or piezoelectric ceramic depolarization to cause serious consequences such as performance losing and finally damage to the transducer. Therefore, reasonable thermal design of the transducer is essential for continuous high power operation of the transducer.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a longitudinal vibration transducer heat dissipation structure and a design method thereof.
The invention provides a heat radiation structure of a longitudinal vibration transducer, which comprises a watertight layer, a front cover plate, a transduction driving element, a prestress bolt, a rear cover plate, an insulating decoupling base, an insulating decoupling heat conduction material and a watertight shell, wherein the watertight layer is arranged on the front cover plate;
the front cover plate is arranged at the top of the watertight housing, and the watertight layer is wrapped on the outer side of the front cover plate;
the driving element, the rear cover plate, the insulating decoupling heat-conducting material and the insulating decoupling base are all arranged in the watertight housing; the front cover plate, the transduction driving element and the rear cover plate are sequentially arranged from top to bottom, one end of the prestress bolt is positioned in the rear cover plate, and the other end of the prestress bolt penetrates through the transduction driving element to extend into the front cover plate and is connected with the front cover plate;
a gap is arranged between the transduction driving element and the watertight housing;
an insulating decoupling base and an insulating decoupling heat-conducting material are arranged between the rear cover plate and the watertight housing.
Preferably, the transduction driving element comprises PZT piezoelectric ceramics.
Preferably, the back cover plate and the watertight housing are both made of heat conducting materials.
Preferably, the back cover plate is copper or steel.
Preferably, the watertight housing is metal.
Preferably, the insulating decoupling heat conducting material is a heat conducting silica gel pad.
Preferably, the watertight layer is made of polyurethane rubber material.
Preferably, the insulating decoupling base is an epoxy glass cloth rod or polyurethane rigid foam.
The invention provides a design method of a heat dissipation structure of a longitudinal vibration transducer, which comprises the following steps:
step 1: assembling the transduction driving element, the front cover plate, the rear cover plate and the prestress bolts into transducer vibrators and welding wires;
step 2: after the transducer vibrator is assembled and the welding lines are completed, cleaning the outer surface of the piezoelectric ceramic and the surface of the welding spots;
step 3: uniformly pasting all the circumferential surfaces of the rear cover plates of the array with insulating decoupling heat-conducting materials with the thickness of 1 mm;
step 4: and assembling the transducer vibrator treated by the process with the watertight housing, and finally completing watertight.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the insulating heat-conducting material is laid between the rear cover plate and the watertight housing, so that a means of establishing a heat transfer path between the transducer driving element and the water body is completed, the heat dissipation and heat conduction capacity of the transducer is improved, and the working temperature of the transducer is reduced.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a longitudinal vibration transducer without an insulating decoupling thermally conductive material;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a schematic illustration of heat transfer in accordance with the present invention;
FIG. 4 is a schematic diagram of temperature rise curves of the scheme of the invention under the same working condition as the scheme without adopting the insulating decoupling heat conducting material;
the figure shows:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
The invention provides a heat dissipation structure of a longitudinal vibration transducer, which is shown in fig. 2 and comprises a watertight layer 1, a front cover plate 2, a transduction driving element 3, a prestress bolt 5, a rear cover plate 6, an insulating decoupling base 7, an insulating decoupling heat-conducting material 8 and a watertight housing 4.
The front cover plate 2 is arranged at the top of the watertight housing 4, and the watertight layer 1 is wrapped on the outer side of the front cover plate 2; specifically, a watertight layer 1 is also arranged between the front cover plate 2 and the watertight housing 4. The driving element 3, the rear cover plate 6, the insulating decoupling heat conducting material 8 and the insulating decoupling base 7 are all arranged in the watertight housing 4; the front cover plate 2, the transduction driving element 3 and the rear cover plate 6 are sequentially arranged from top to bottom. The prestress bolt 5 is made of steel materials, one end of the prestress bolt 5 is located in the rear cover plate 6, and the other end of the prestress bolt 5 penetrates through the transduction driving element 3 to extend into the front cover plate 2 and is connected with the front cover plate 2; specifically, the head of the pre-stress bolt 5 is located in the rear cover plate 6, and the tail of the pre-stress bolt 5 is connected with the front cover plate 2. A gap is arranged between the transduction driving element 3 and the watertight housing 4; an insulating decoupling base 7 and an insulating decoupling heat-conducting material 8 are arranged between the rear cover plate 6 and the watertight housing 4.
In a preferred embodiment, the transducer driving element 3 is a main heat generating part, and the front and rear cover plates which are structurally and tightly connected with the transducer driving element are metal and are heat conductors. The transduction driving element 3 comprises a piezoelectric ceramic or rare earth, preferably PZT piezoelectric ceramic. The back cover plate 6 and the watertight housing 4 are both made of heat conducting materials, preferably, the back cover plate 6 is made of copper or steel, preferably copper. The watertight housing 4 is of low density metal, preferably 316L stainless steel. The insulating decoupling heat conducting material 8 is a heat conducting silica gel pad, preferably a high-performance heat conducting silica gel pad, the heat conductivity coefficient is 12W/(m×k), and the gap between the side surface of the rear cover plate 6 and the metal watertight housing is completely filled. The watertight layer 1 is made of polyurethane rubber material. The insulating decoupling base 7 is an epoxy glass cloth rod or polyurethane rigid foam.
In the above structure, the watertight layer 1 is arranged between the front cover plate 2 and the watertight housing 4, and the significance of arranging the gap and the insulation decoupling base 7 is that: in order to isolate the insulation and avoid the influence of the watertight housing 4 on the vibration of the transducer, the front cover plate 2 and the rear cover plate 6 and the driving element are not in direct contact with the watertight housing 4 of the transducer, so that a cavity (i.e. the gap) is sometimes formed between the watertight housing and the front cover plate, and an insulation decoupling material base 7 is sometimes designed, and the insulation decoupling base 7 is generally made of soft and strong materials such as epoxy glass cloth, polyurethane rigid foam and the like.
The meaning of the insulating decoupling heat conducting material 8 provided in the invention is that: the watertight layer 1, the gap and the insulating decoupling base 7 have poor heat conduction, which gives an obstacle to heat dissipation of the longitudinal vibration transducer. Considering that for a longitudinally vibrating underwater acoustic transducer, which generally works underwater, a wide body of water is a good heat carrier, the thermal limit problem of the transducer can be alleviated to some extent as long as good heat transfer between the drive element and the body of water is established. In order to achieve good heat dissipation of the longitudinal vibration transducer, the invention adopts a thermal design method for establishing a heat conduction path between the driving element and the water body, namely, a large-area insulating decoupling heat conduction material 8 is laid between the rear cover plate 6 and the watertight housing 4. Therefore, the establishment of a heat transfer path between the transducer driving element and the water body is completed, after the driving element heats, heat is transferred to the metal back cover plate, and the metal back cover plate transfers the heat to a wide water body finally along the insulating heat-conducting material and the heat-conducting watertight housing.
Compared with the structure shown in fig. 1, which does not adopt the insulating decoupling heat conducting material 8, the invention is durable and reliable, is simple and convenient to operate, can not increase the size of the transducer, does not influence the electroacoustic performance of the transducer, and has been verified in practical application and experiments.
It can be seen from fig. 4 that the heat designed transducer has a lower heat balance temperature than the heat designed transducer without, reducing the heat balance temperature by about 15 c, which verifies the effectiveness of the present invention.
The invention comprises the following steps: in order to change the heat dissipation capability of the transducer, the inventor firstly tries to change the watertight layer into a heat conduction material to establish a heat conduction path through the front cover plate according to common knowledge in the field, but the scheme is not feasible, because the inventor finds that the heat conduction is realized by adding heat conduction powder into the watertight material, the sound transmission efficiency and the long-term water soaking property of the watertight layer are also influenced, and the subsequent development difficulty is high; then, the inventor also considers using heat-conducting materials to manufacture the insulating decoupling base, but the insulating decoupling base is not feasible, because the general heat-conducting materials with certain strength comprise carbon fiber, heat-conducting ceramic, metal and the like, and the general heat-conducting materials have poor electric conduction and decoupling capacities and cannot meet the requirements; that is, the purpose of changing the heat dissipation capacity of the transducer cannot be achieved by common knowledge. It follows that the inventors have finally obtained the preferred solution of the present invention after having undergone inventive work.
In summary, the material of the rear cover plate is designed to be a good conductor of heat such as copper or steel; designing the watertight housing of the transducer to be a good conductor material of metal and the like; the large-area insulating heat-conducting material is laid between the back cover plate of the transducer and the watertight housing. Therefore, the establishment of a heat transfer path between the transducer driving element and the water body is completed, after the driving element heats, heat is transferred to the metal back cover plate, and the metal back cover plate transfers the heat to a wide water body finally along the insulating heat-conducting material and the heat-conducting watertight housing.
The invention also provides a design method of the heat dissipation structure of the longitudinal vibration transducer, which comprises the following steps:
step 1: assembling the transduction driving element 3, the front cover plate 2, the rear cover plate 6 and the prestress bolts 5 into transducer vibrators according to a conventional process and welding wires;
step 2: after the transducer vibrator is assembled and the welding lines are completed, cleaning the outer surface of the piezoelectric ceramic and the surface of the welding spots;
step 3: uniformly pasting all the circumference surfaces of the rear cover plate 6 of the array with insulating decoupling heat-conducting materials 8 with the thickness of about 1 mm;
step 4: the transducer vibrator treated by the process is assembled with the watertight housing 4, and watertight is finally completed.
The invention provides a general method based on the general design method of the transducer, which can be also used for other similar transducers, has better practical application effect,
in the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (9)
1. The heat dissipation structure of the longitudinal vibration transducer is characterized by comprising a watertight layer (1), a front cover plate (2), a transduction driving element (3), a prestress bolt (5), a rear cover plate (6), an insulating decoupling base (7), an insulating decoupling heat conduction material (8) and a watertight housing (4);
the front cover plate (2) is arranged at the top of the watertight housing (4), and the watertight layer (1) is wrapped on the outer side of the front cover plate (2);
the driving element (3), the rear cover plate (6), the insulating decoupling heat-conducting material (8) and the insulating decoupling base (7) are all arranged in the watertight housing (4); the front cover plate (2), the transduction driving element (3) and the rear cover plate (6) are sequentially arranged from top to bottom, one end of the prestress bolt (5) is positioned in the rear cover plate (6), and the other end of the prestress bolt (5) penetrates through the transduction driving element (3) to extend into the front cover plate (2) and is connected with the front cover plate (2);
a gap is arranged between the transduction driving element (3) and the watertight housing (4);
an insulating decoupling base (7) and an insulating decoupling heat-conducting material (8) are arranged between the rear cover plate (6) and the watertight housing (4).
2. A longitudinal vibration transducer heat sink according to claim 1, characterized in that the transduction driving element (3) comprises PZT piezoelectric ceramics.
3. The heat dissipation structure of a longitudinal vibration transducer according to claim 1, wherein the back cover plate (6) and the watertight housing (4) are both made of heat conductive materials.
4. A longitudinal vibration transducer heat dissipating structure according to claim 3, characterized in that the back cover plate (6) is copper or steel.
5. A longitudinal vibration transducer heat dissipating structure according to claim 3, characterized in that the watertight housing (4) is metal.
6. The longitudinal vibration transducer heat dissipating structure according to claim 1, characterized in that the insulating decoupling heat conducting material (8) is a heat conducting silicone pad.
7. The heat dissipation structure of a longitudinal vibration transducer according to claim 1, characterized in that the watertight layer (1) is a polyurethane rubber material.
8. The longitudinal vibration transducer heat dissipating structure according to claim 1, characterized in that the insulating decoupling base (7) is an epoxy glass cloth rod or a polyurethane rigid foam.
9. A method for designing a heat radiation structure of a longitudinal vibration transducer, which is according to any one of claims 1 to 8, characterized by comprising the steps of:
step 1: assembling the transduction driving element (3), the front cover plate (2), the rear cover plate (6) and the prestress bolts (5) into transducer vibrators and welding wires;
step 2: after the transducer vibrator is assembled and the welding lines are completed, cleaning the outer surface of the piezoelectric ceramic and the surface of the welding spots;
step 3: uniformly pasting an insulating decoupling heat-conducting material (8) with the thickness of 1mm on the whole circumferential surface of the rear cover plate (6) of the array;
step 4: and assembling the transducer vibrator treated by the process with a watertight housing (4) and finally completing watertight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311427812.XA CN117615529A (en) | 2023-10-30 | 2023-10-30 | Longitudinal vibration transducer heat radiation structure and design method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311427812.XA CN117615529A (en) | 2023-10-30 | 2023-10-30 | Longitudinal vibration transducer heat radiation structure and design method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117615529A true CN117615529A (en) | 2024-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311427812.XA Pending CN117615529A (en) | 2023-10-30 | 2023-10-30 | Longitudinal vibration transducer heat radiation structure and design method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117615529A (en) |
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2023
- 2023-10-30 CN CN202311427812.XA patent/CN117615529A/en active Pending
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