A split-buckling single-flange overflow circular ring launch transducer without barrier plate

Abstract

This invention provides a baffle-free, split-type, single-flange overflow ring transducer, comprising an annular flange and an upper oil bladder fixed to the hollow inner side of the annular flange; a lower oil bladder is fitted at the bottom of the annular flange; the annular flange, upper oil bladder, and lower oil bladder together form a sealed silicone oil cavity; a clamping ring is fitted on the outer side of the top of the lower oil bladder; a piezoelectric ceramic ring is assembled in the sealed silicone oil cavity through a limiting support structure; and an anti-detachment mechanism is also included, which is detachably installed on the annular flange. The anti-detachment mechanism includes an anti-detachment ring and a protective frame attached to the bottom of the lower oil bladder; a ring plate is provided on the outer wall of the lower oil bladder, with the top surface of the ring plate attached to the bottom of the clamping ring; the anti-detachment ring presses against the bottom surface of the ring plate. The annular flange replaces the traditional independent acoustic baffle, eliminating redundant acoustic interfaces, fully preserving the original acoustic field characteristics of the overflow ring, exhibiting regular beamform, high symmetry, excellent pointing accuracy, and good sidelobe suppression, meeting the requirements for high-precision underwater acoustic arrays.

Description

Technical Field

[0001] This invention relates to the field of underwater acoustic transducer technology, and in particular to a baffle-free, split-type, single-flange overflow ring transducer. Background Technology

[0002] Overflow ring transmitter transducers have advantages such as high beam symmetry, good sidelobe suppression, stable directivity, and large power capacity, making them a core component of deep-sea acoustic arrays.

[0003] Existing similar products generally adopt a structure with a solid disc flange and an independent acoustic baffle. The independent acoustic baffle is sealed to the end face of the rubber oil bladder, and the two together enclose a sealed oil-filled cavity. The independent baffle provides sound insulation and sound shielding, while the oil bladder, together with the silicone oil inside the cavity, completes pressure compensation and acoustic coupling. This traditional structure has two inherent defects: First, acoustic performance deteriorates. The independent acoustic baffle is an additional acoustic interface, forming a multi-layered acoustic impedance interface with the surrounding medium. Sound waves are prone to reflection, scattering, and interference, directly causing distortion of the original sound field of the overflow ring. This results in problems such as beam shift, directivity divergence, and increased sidelobe amplitude, making it difficult to meet the requirements for high-precision underwater acoustic detection.

[0004] Second, insufficient heat dissipation and emission efficiency. To improve the problem of sound field disturbance, the industry generally covers the outside of the piezoelectric ceramic ring with polyurethane or over-vulcanized rubber. These materials have poor thermal conductivity. Under high-power excitation, the piezoelectric ceramic continuously generates heat, which cannot be dissipated in time. This easily leads to temperature drift problems such as resonant frequency drift and decrease in electromechanical coupling coefficient, accelerating device aging. At the same time, the coating layer changes the acoustic impedance matching state, increases sound propagation loss, and significantly reduces sound energy emission efficiency.

[0005] Therefore, a baffle-free, split-type, single-flange overflow ring transmitter transducer is provided to address the above problems. Summary of the Invention

[0006] To address the technical problems of sound field distortion, poor heat dissipation of the piezoelectric ceramic fully enclosed structure, and low emission efficiency caused by the use of solid disc flanges and the addition of independent acoustic baffles in existing overflow ring transducers, this invention provides a baffle-free split-type snap-fit ​​single-flange overflow ring transducer.

[0007] The present invention solves the above-mentioned technical problems through the following technical solutions: This invention provides a baffle-free, split-type, snap-fit ​​single-flange overflow annular transmitter transducer, comprising an annular flange and an upper oil bladder fixed to the hollow inner side of the annular flange; a lower oil bladder is fitted at the bottom end of the annular flange; the annular flange, upper oil bladder, and lower oil bladder together form a sealed silicone oil cavity; a snap-fit ​​ring is fitted on the outer side of the top of the lower oil bladder, the snap-fit ​​ring radially clamping the lower oil bladder to the annular flange; a piezoelectric ceramic ring is assembled in the sealed silicone oil cavity through a limiting support structure, the limiting support structure being used for axial support and radial limiting of the piezoelectric ceramic ring; it also includes an anti-detachment mechanism, which is detachably installed on the annular flange, the anti-detachment mechanism including an anti-detachment ring and a protective frame attached to the bottom of the lower oil bladder; a ring plate is provided on the outer wall of the lower oil bladder, the top surface of the ring plate being attached to the bottom of the snap-fit ​​ring; the anti-detachment ring presses against the bottom surface of the ring plate, forming an axial stop for the snap-fit ​​ring and the lower oil bladder.

[0008] Preferably, the limiting support structure includes a supporting step disposed in the lower oil bladder and a plurality of limiting ribs; the supporting step is axially supported at the lower end face of the piezoelectric ceramic ring, and the plurality of limiting ribs are evenly distributed along the inner circumferential surface of the lower oil bladder, and the limiting ribs are connected to the limiting grooves opened on the outer circumferential surface of the piezoelectric ceramic ring.

[0009] Preferably, the sealed silicone oil cavity is filled with a high thermal conductivity modified silicone oil, the high thermal conductivity modified silicone oil having a thermal conductivity ≥0.18W / (m·K); the high thermal conductivity modified silicone oil is a compound of base silicone oil and thermally conductive filler, the thermally conductive filler being at least one of spherical alumina, aluminum nitride, and nano-graphite, the filler particle size being 50nm~200nm, and the mass blending ratio of the thermally conductive filler being 8%~15%.

[0010] Preferably, the anti-detachment mechanism further includes fastening rods fixed to the anti-detachment ring; the number of fastening rods is multiple, and the multiple fastening rods are distributed in a ring array on the anti-detachment ring; a stud is fixed to the top of the fastening rod, the stud passes through a slot opened in the annular flange, and a nut is threaded onto the stud; the nut and the top of the fastening rod respectively press against the top and bottom surfaces of the annular flange; the bottom end of the fastening rod is connected to the protective frame by screws, and a stop bar is fixed on the protective frame; the stop bar is in contact with the bottom surface of the lower oil bladder.

[0011] Preferably, at least one annular mounting groove is provided on the outer side wall of the bottom end of the annular flange, an oil-filled sealing ring is fixed in the mounting groove, and a pressure bladder is fixed on one side bottom of the annular flange; the top of the pressure bladder communicates with the oil-filled sealing ring through a channel provided in the annular flange, and the anti-detachment ring is pressed against the bottom of the pressure bladder.

[0012] Preferably, the annular flange is provided with a mounting hole, a watertight connector is installed in the mounting hole, the watertight connector passes through the mounting hole, and the watertight connector is electrically connected to the piezoelectric ceramic ring in the sealed silicone oil cavity.

[0013] Preferably, a fixing ring is fixedly sleeved on the watertight connector, the fixing ring is provided with an annular groove, and a limiting insertion mechanism is provided on the annular flange, the limiting insertion mechanism being inserted into the annular groove.

[0014] Preferably, the limiting insertion mechanism includes a pushing block and a push-receiving seat abutting against one side of the pushing block. A vertical rod is fixed to the bottom of the pushing block, and the vertical rod is slidably engaged with a guide hole opened on the annular flange. An end plate is fixed to the bottom end of the vertical rod, and the end plate is elastically connected to the annular flange through a first spring. A plug is fixed to one side of the push-receiving seat, and a sliding groove is opened on the plug. The sliding groove is slidably connected to a slider fixed to the top of the annular flange, and the slider and the plug are elastically connected through a second spring.

[0015] Preferably, a first wedge-shaped surface is provided on one side of the pushing block, and a second wedge-shaped surface is provided on one side of the pushed seat, with the first wedge-shaped surface and the second wedge-shaped surface fitting together.

[0016] Preferably, the slider is fixed with an upper stop and a lower stop, which are respectively attached to the top and bottom surfaces of the insertion post.

[0017] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0018] The positive and progressive effects of this invention are as follows: The aforementioned baffle-free, split-type, single-flange overflow ring transducer replaces the traditional independent acoustic baffle with a ring flange. The ring flange body directly assumes the backing, sound insulation, and sound shielding functions of the acoustic baffle, eliminating redundant acoustic interfaces and fully preserving the original acoustic field characteristics of the overflow ring. It exhibits a regular beam shape, high symmetry, excellent directivity, and good sidelobe suppression, meeting the requirements for high-precision underwater acoustic arrays. The hollow portion of the ring flange is sealed by an upper oil bladder, resulting in a compact structure that does not interfere with the main radiated sound field.

[0019] By abandoning the low thermal conductivity full-encapsulation structure, the piezoelectric ceramic ring directly contacts the high thermal conductivity modified silicone oil, eliminating the polyurethane and vulcanized rubber full-encapsulation layers. Under high-power continuous operation, the temperature rise is low, the electrical parameters of the device are highly stable, and the heat generated by the piezoelectric ceramic ring is quickly dissipated, effectively suppressing the temperature drift of the device parameters. At the same time, the acoustic impedance loss caused by the encapsulation layer is eliminated, and the acoustic energy emission efficiency is effectively improved.

[0020] The upper oil bladder is vulcanized and connected to the annular flange in an integrated manner, and the hollow sealing is completed simultaneously, ensuring a solid basic seal. The lower oil bladder adopts a snap-fit ​​assembly structure, which provides excellent sealing effect at the mating surface. Furthermore, the lower oil bladder is designed to be detachable, facilitating future maintenance and replacement.

[0021] An anti-detachment ring forms an axial stop, limiting the axial displacement of the clamping ring and the lower oil bladder. A matching annular protective frame blocks the bottom of the lower oil bladder. The combined action of the protective frame and the anti-detachment ring creates a double-limiting anti-detachment system, while also providing anti-collision protection. This double-limiting design effectively prevents the lower oil bladder from loosening or falling off under water pressure and vibration, improving the operational stability of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the protective frame of the present invention; Figure 3 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of section A in the middle; Figure 5 For the present invention Figure 3 Enlarged structural diagram of section B in the middle; Figure 6 This is a schematic diagram of the structure of the hole body and the annular flange of the present invention; Figure 7 This is a schematic diagram of the limiting insertion mechanism and the fixing ring of the present invention; Figure 8 This is a three-dimensional structural diagram of the limiting insertion mechanism of the present invention; Figure 9 This is a schematic diagram of the structure of the insert and the push-received seat of the present invention; Figure 10 This is a schematic diagram of the slider of the present invention; Figure 11 This is a schematic diagram of the structure of the lower oil bladder of the present invention.

[0023] Explanation of reference numerals in the attached figures 1. Annular flange; 101. Support ring; 102. Flange; 2. Upper oil bladder; 3. Lower oil bladder; 301. Ring plate; 302. Oil injection hole; 303. Support step; 304. Limiting rib; 4. Clamping ring; 5. Anti-detachment ring; 6. Fastening rod; 7. Stud; 8. Nut; 9. Protective frame; 901. Screw; 902. Stop bar; 10. Watertight connector; 11. Oil injection screw; 12. Piezoelectric ceramic ring; 13. Pressurized soft bladder; 14. Limiting insertion mechanism; 1401. Pushing block; 14011. First wedge-shaped surface; 14 02. Vertical rod; 1403. First spring; 1404. End plate; 1405. Insert post; 1406. Push seat; 14061. Second wedge surface; 1407. Slide groove; 1408. Slider; 14081. Upper stop; 14082. Lower stop; 1409. Second spring; 15. Oil-filled sealing ring; 1501. Connecting hole; 16. Vertical groove; 17. First connecting groove; 18. Second connecting groove; 19. Sealing strip; 20. Fixing ring; 2001. Annular groove; 21. Hole body; 22. Sealed silicone oil cavity. Detailed Implementation

[0024] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0025] like Figures 1-11 As shown, a baffle-free split-type crimping single-flange overflow annular transmitter transducer includes an annular flange 1 and an upper oil bladder 2 fixed to the hollow position inside the annular flange 1; specifically, the upper oil bladder 2 is fixed to the annular flange 1 by direct vulcanization bonding, sealing the hollow position of the annular flange 1.

[0026] By abandoning the traditional solid disc flange and independent acoustic baffle, the annular flange 1 replaces the traditional solid disc flange and independent acoustic baffle. The annular flange 1 directly undertakes the backing sound insulation and sound shielding functions of the acoustic baffle, realizing the sound field backing and sound shielding effect, and eliminating redundant independent baffle parts. The hollow area of ​​the annular flange 1 is directly sealed by the upper oil bladder 2 (which can be a rubber sheet), eliminating the additional acoustic interface caused by the independent baffle from the root and avoiding sound wave reflection and interference problems.

[0027] To improve the anti-detachment effect of the upper oil bladder 2, such as Figures 3-4As shown, a support ring 101 is integrally formed at the bottom of the hollow position inside the annular flange 1, and a flange 102 is integrally formed at the top of the hollow position inside the annular flange 1. When the upper oil bladder 2 is not installed in the hollow position inside the annular flange 1, the flange 102 is turned upwards, which does not affect the upper oil bladder 2 being installed from the top of the hollow position inside the annular flange 1. After the upper oil bladder 2 is installed in the hollow position and vulcanized and bonded, the flange 102 is deformed by stamping and wrapped around the top edge of the upper oil bladder 2, which further seals the connection between the upper oil bladder 2 and the annular flange 1 and forms a barrier to prevent the upper oil bladder 2 from detaching due to pressure.

[0028] The bottom end of the annular flange 1 is fitted with a lower oil bladder 3; the annular flange 1, the upper oil bladder 2, and the lower oil bladder 3 together form a sealed silicone oil cavity 22; A clamping ring 4 is fitted on the outer side of the top of the lower oil bladder 3. The clamping ring 4 makes the joint between the lower oil bladder 3 and the annular flange 1 radially tighten, so as to realize the detachable connection between the lower oil bladder 3 and the annular flange 1 and the radial sealing at the connection. The sealed silicone oil cavity 22 is formed by the annular flange 1, the upper oil bladder 2, and the lower oil bladder 3. The upper end of the upper oil bladder 2 is integrated with the inner end face of the annular flange 1 by a high-temperature vulcanization process, which also seals the hollow area of ​​the flange, ensuring a permanent and reliable sealing performance. The lower oil bladder 3 is a detachable structure, which is tightly assembled to the lower end of the annular flange 1 by an outer clamping ring 4, facilitating future maintenance and replacement. The upper oil bladder 2 and the lower oil bladder 3 are independent of each other and have no direct contact, abandoning the traditional lip-joint form of oil bladders.

[0029] The piezoelectric ceramic ring 12 is assembled in the sealed silicone oil cavity 22 by a limiting support structure. The limiting support structure is used to support the piezoelectric ceramic ring 12 axially and limit its radial movement. It should be noted that the piezoelectric ceramic ring 12 is placed entirely in the sealed silicone oil cavity 22, and the outer wall is not covered with a polyurethane or vulcanized rubber full-coverage layer.

[0030] By eliminating the polyurethane and vulcanized rubber full-coverage layer, the piezoelectric ceramic ring 12 is axially supported and radially limited by the limiting support structure, achieving uncovered floating assembly; the piezoelectric ceramic ring 12 is completely immersed in the silicone oil medium, ensuring assembly positioning accuracy, while eliminating heat accumulation and sound propagation loss caused by the covering layer.

[0031] It also includes an anti-detachment mechanism, which is detachably installed on the annular flange 1. The anti-detachment mechanism includes an anti-detachment ring 5 and a protective frame 9 that fits against the bottom of the lower oil bladder 3. A ring plate 301 is provided on the outer wall of the lower oil bladder 3, and the top surface of the ring plate 301 fits against the bottom of the clamping ring 4. The anti-detachment ring 5 presses the bottom surface of the ring plate 301 to form an axial stop and limit the clamping ring 4 and the lower oil bladder 3, preventing the lower oil bladder 3 from loosening and falling.

[0032] The anti-detachment ring 5 forms an axial stop, limiting the axial displacement of the clamping ring 4 and the lower oil bladder 3. A ring-shaped protective frame 9 is also included to block the bottom of the lower oil bladder 3. The combined action of the protective frame 9 and the anti-detachment ring 5 creates a double-limiting anti-detachment system, while also providing anti-collision protection. This double-limiting design effectively prevents the lower oil bladder 3 from loosening or falling off under water pressure and vibration, improving the operational stability of the equipment.

[0033] In practical implementation, both the upper oil bladder 2 and the lower oil bladder 3 are made of seawater-resistant and silicone oil-resistant neoprene rubber. The overall structure can withstand water pressure ≥60MPa and is suitable for deep-water operation environments up to 600m.

[0034] like Figure 3 and Figure 11 As shown, the limiting support structure includes a supporting step 303 disposed in the lower oil bladder 3 and several limiting ribs 304; the supporting step 303 is annular and integrally formed inside the lower oil bladder 3; the supporting step 303 is axially supported at the lower end face of the piezoelectric ceramic ring 12; several limiting ribs 304 are evenly distributed along the inner circumferential surface of the lower oil bladder 3, and the limiting ribs 304 are connected to the limiting grooves opened on the outer circular surface of the piezoelectric ceramic ring 12.

[0035] The piezoelectric ceramic ring 12 is assembled in a suspended state without covering by the axial support of the step 303 and the radial limiting provided by several limiting ribs 304.

[0036] The sealed silicone oil cavity 22 is filled with highly thermally conductive modified silicone oil, the thermal conductivity of which is ≥0.18W / (m·K). The highly thermally conductive modified silicone oil is composed of a base silicone oil and a thermally conductive filler. The thermally conductive filler is at least one of spherical alumina, aluminum nitride, and nano-graphite. The particle size of the filler is 50nm to 200nm, and the mass blending ratio of the thermally conductive filler is 8% to 15%.

[0037] Application Examples of High Thermal Conductivity Modified Silicone Oil Prepare high thermal conductivity modified silicone oil by weight: 100 parts base methyl silicone oil, add 12 parts spherical alumina thermally conductive filler with a particle size of 100nm, mix at high speed and then degas under vacuum, and pour the finished product into the sealed silicone oil cavity 22.

[0038] By abandoning the low thermal conductivity fully encapsulated structure, the piezoelectric ceramic ring 12 directly contacts the high thermal conductivity modified silicone oil, resulting in low temperature rise under high-power continuous operation, strong stability of device electrical parameters, and rapid heat dissipation of the heat generated by the piezoelectric ceramic ring 12 during operation, effectively suppressing temperature drift of device parameters; at the same time, it eliminates acoustic impedance loss caused by the encapsulation layer, and effectively improves acoustic energy emission efficiency.

[0039] like Figure 3As shown, an oil filling hole 302 is provided on the bottom side of the lower oil bladder 3, and a detachable oil filling screw 11 is threaded onto the oil filling hole 302 as a sealing plug. The oil filling hole 302 and the oil filling screw 11 enable convenient filling of silicone oil and reliable watertight sealing of the sealed silicone oil cavity 22, simplifying assembly and subsequent maintenance procedures.

[0040] like Figures 1-3 as well as Figure 5 As shown, the anti-detachment mechanism also includes a fastening rod 6 fixed to the anti-detachment ring 5; there are multiple fastening rods 6, and the multiple fastening rods 6 are distributed in a ring array on the anti-detachment ring 5. The top end of the fastening rod 6 is fixed with a stud 7, the stud 7 passes through a hole slot opened on the annular flange 1, and a nut 8 is threaded onto the stud 7. The nut 8 and the top end of the fastening rod 6 respectively press against the top and bottom surfaces of the annular flange 1; the bottom end of the fastening rod 6 is connected to the protective frame 9 by a screw 901, and a baffle 902 is fixed on the protective frame 9. The baffle 902 is in contact with the bottom surface of the lower oil bladder 3.

[0041] The anti-detachment mechanism is detachably installed on the annular flange 1 by means of studs 7 and nuts 8. During installation, studs 7 are passed through the slots on the annular flange 1, and nuts 8 are screwed onto studs 7. Nuts 8 and fastening rods 6 press the annular flange 1 together, while the anti-detachment ring 5 presses against the ring plate 301. The ring plate 301 is pressed against the bottom surface of the clamping ring 4, providing axial stop for the lower oil bladder 3 and the clamping ring 4, and limiting the axial displacement of the clamping ring 4 and the lower oil bladder 3. Then, the protective frame 9 is fixed to the bottom end of the fastening rod 6 by screws 901. The stop strip 902 on the protective frame 9 is in contact with the bottom surface of the lower oil bladder 3, providing secondary limit for the lower oil bladder 3. After the anti-detachment mechanism is installed, it surrounds the outside of the lower oil bladder 3, playing a role in anti-collision protection.

[0042] When disassembling the anti-detachment mechanism, unscrew the nut 8 on the stud 7, and then pull the stud 7 out of the slot on the annular flange 1.

[0043] like Figures 3-6 As shown, at least one annular mounting groove is provided on the outer side wall of the bottom end of the annular flange 1. An oil-filled sealing ring 15 is fixed in the mounting groove. A pressure bladder 13 is fixed on one side bottom of the annular flange 1. The top of the pressure bladder 13 is connected to the oil-filled sealing ring 15 through a channel provided in the annular flange 1. The anti-detachment ring 5 is pressed against the bottom of the pressure bladder 13.

[0044] The pressurizing soft bag 13 is a rubber corrugated hose with one end closed. The open end of the pressurizing soft bag 13 is fixed to the annular flange 1, while the closed end of the pressurizing soft bag 13 is used to be pushed by the anti-detachment ring 5.

[0045] The channel within the annular flange 1 includes a vertical groove 16, a first connecting groove 17, a second connecting groove 18, and a hole 21. The vertical groove 16, the first connecting groove 17, the second connecting groove 18, and the hole 21 are all formed on the annular flange 1. The oil-filled sealing ring 15 is integrally connected to the mounting groove through a high-temperature vulcanization process, and a connecting hole 1501 is formed on the inner ring of the oil-filled sealing ring 15. The connecting hole 1501 communicates with the first connecting groove 17, the first connecting groove 17 communicates with the vertical groove 16, the top of the vertical groove 16 and the hole 21 communicate with the second connecting groove 18, and the hole 21 is formed at the bottom of one side of the annular flange 1, i.e., at the position where the pressure bladder 13 is installed, and the hole 21 communicates with the opening end of the pressure bladder 13.

[0046] The processing procedure of the channel is as follows: First, the top surface of the annular flange 1 is milled to form the second connecting groove 18. Then, the bottom surface of the second connecting groove 18 is drilled to form the vertical groove 16. Next, the first connecting groove 17 is formed by drilling holes in the groove wall of the mounting groove. Then, a hole 21 is drilled at the bottom of one side of the annular flange 1. Finally, a sealing strip 19 is embedded in the second connecting groove 18 and the sealing strip 19 is seamlessly welded to the wall of the second connecting groove 18. The sealing strip 19 seals the top of the second connecting groove 18, while the bottom of the second connecting groove 18 is not sealed, so that the hole 21 can connect with the vertical groove 16.

[0047] The clamping ring 4 applies pressure to the outside of the lower oil bladder 3, causing the lower oil bladder 3 to tightly grip the annular flange 1. The lower oil bladder 3 and the annular flange 1 are tightly fitted to form a single seal, but the sealing performance of the single-seal structure is not good. The above solution, through the setting of the oil-filled sealing ring 15, the channel, and the pressurized soft bladder 13, is used to improve the sealing performance at the connection between the lower oil bladder 3 and the annular flange 1, forming a second sealing structure.

[0048] Specifically, the pressure bladder 13, the channel, and the oil-filled sealing ring 15 are filled with oil. When the clamping ring 4 is installed but the anti-detachment mechanism is not installed, the pressure bladder 13 is not compressed. When the anti-detachment mechanism is installed, the anti-detachment ring 5 presses the ring plate 301 and pushes the pressure bladder 13, compressing the pressure bladder 13. The oil in the pressure bladder 13 is then input into the oil-filled sealing ring 15 through the channel, causing the oil-filled sealing ring 15 to expand and press the lower oil bladder 3 to improve the sealing effect.

[0049] like Figure 3 As shown, the annular flange 1 is provided with a mounting hole, the watertight connector 10 is installed on the mounting hole, the watertight connector 10 passes through the mounting hole, and the watertight connector 10 is electrically connected to the piezoelectric ceramic ring 12 in the sealed silicone oil cavity 22.

[0050] like Figure 5As shown, a fixing ring 20 is fixedly sleeved on the watertight connector 10, and an annular groove 2001 is provided on the fixing ring 20. A limiting insertion mechanism 14 is provided on the annular flange 1, and the limiting insertion mechanism 14 is inserted into the annular groove 2001.

[0051] like Figure 7 As shown, the limiting insertion mechanism 14 includes a pushing block 1401 and a push-receiving seat 1406 abutting against one side of the pushing block 1401. A vertical rod 1402 is fixed to the bottom of the pushing block 1401. The vertical rod 1402 slides with a guide hole opened on the annular flange 1. An end plate 1404 is fixed to the bottom end of the vertical rod 1402. The end plate 1404 is elastically connected to the annular flange 1 through a first spring 1403. The first spring 1403 is sleeved on the vertical rod 1402. Two ends of a spring 1403 are fixed to an end plate 1404 and an annular flange 1, respectively. A pin 1405 is fixed to one side of the push seat 1406. A groove 1407 is provided on the pin 1405. The groove 1407 is slidably connected to a slider 1408 fixed to the top of the annular flange 1. The slider 1408 and the pin 1405 are elastically connected by a second spring 1409. One end of the second spring 1409 is fixed to the slider 1408, and the other end is fixed to the wall of the groove 1407.

[0052] like Figures 8-9 As shown, a first wedge-shaped surface 14011 is provided on one side of the pushing block 1401, and a second wedge-shaped surface 14061 is provided on one side of the pushed seat 1406, with the first wedge-shaped surface 14011 and the second wedge-shaped surface 14061 in contact.

[0053] like Figures 9-10 As shown, an upper stop 14081 and a lower stop 14082 are fixed on the slider 1408, and the upper stop 14081 and the lower stop 14082 are respectively attached to the top surface and bottom surface of the insert post 1405.

[0054] The watertight connector 10 is threaded onto the mounting hole on the annular flange 1. To improve the installation effect and prevent the watertight connector 10 from loosening due to long-term vibration after installation, a limiting insertion mechanism 14 is added.

[0055] When the anti-detachment mechanism is not installed, the anti-detachment ring 5 does not push the end plate 1404 of the limiting insertion mechanism 14 upward, and the insertion post 1405 is not inserted into the annular groove 2001. When the anti-detachment mechanism is installed, the anti-detachment ring 5 pushes the end plate 1404 upward, causing the end plate 1404, the vertical rod 1402, and the pushing block 1401 to move upward together and compress the first spring 1403. The pushing block 1401 pushes the second wedge surface 14061 of the push seat 1406 through the first wedge surface 14011, causing the push seat 1406 and the insertion post 1405 to move closer to the fixing ring 20 together and compress the second spring 1409. The insertion post 1405 is then inserted into the annular groove 2001 for limiting.

[0056] When the anti-detachment mechanism is disassembled, the anti-detachment ring 5 separates from the end plate 1404, and the end plate 1404 loses its pushing force. The end plate 1404, the vertical rod 1402 and the pushing block 1401 move downward together by the elastic force of the first spring 1403 until the pushing block 1401 is attached to the top surface of the annular flange 1. The push seat 1406 loses the pushing force of the pushing block 1401. The insertion post 1405 and the push seat 1406 move together by the elastic force of the second spring 1409. The insertion post 1405 leaves the annular groove 2001, and the limit insertion is released.

[0057] A method for assembling and lubricating a baffle-free, split-type, crimp-type, single-flange overflow ring transmitter transducer includes the following steps: S1 Integrated Vulcanization Sealing: The upper oil bladder 2 is permanently bonded to the inner side of the annular flange 1 through a high-temperature vulcanization process, and the flange 102 wraps around the edge of the upper oil bladder 2, using the body of the upper oil bladder 2 to seal the hollow area of ​​the annular flange 1. S2 Ceramic Positioning: The piezoelectric ceramic ring 12 is placed on the annular support step 303 inside the lower oil bladder 3, and radial positioning is achieved by relying on the circumferential limiting rib 304 to realize unencased floating assembly. S3 crimping assembly: The lower oil bladder 3 is coaxially arranged at the lower end of the annular flange 1, and a metal crimping ring 4 is fitted on the outside of the mating position to complete the radial pre-clamping; S4 Axial Locking Limit: Connect the fastening rod 6 to the annular flange 1, and use the anti-detachment ring 5 to achieve axial stop and limit; S5 Vacuum Oil Injection: High thermal conductivity modified silicone oil is vacuum injected into the sealed silicone oil cavity 22 through the oil injection hole 302. After the injection is completed, the oil injection screw 11 is installed to seal it. S6 External Protection: Install protective frame 9. Protective frame 9 and anti-detachment ring 5 work together to complete secondary anti-detachment and anti-collision protection. The overall assembly is complete.

[0058] This invention is not limited to the embodiments described above. Any changes made to their shape or structure fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications fall within the protection scope of this invention.

Claims

1. A baffle-free, split-type, snap-fit ​​single-flange overflow ring transmitter transducer, characterized in that: Includes an annular flange (1) and an upper oil bladder (2) fixed in the hollow position inside the annular flange (1); The bottom end of the annular flange (1) is fitted with a lower oil bladder (3); the annular flange (1), the upper oil bladder (2) and the lower oil bladder (3) together form a closed silicone oil cavity (22). A clamping ring (4) is fitted on the outer side of the top of the lower oil bladder (3), and the clamping ring (4) makes the joint between the lower oil bladder (3) and the annular flange (1) form a radial clamp; The sealed silicone oil cavity (22) is equipped with a piezoelectric ceramic ring (12) through a limiting support structure. The limiting support structure is used to support the piezoelectric ceramic ring (12) axially and limit it radially. It also includes an anti-detachment mechanism, which is detachably installed on the annular flange (1). The anti-detachment mechanism includes an anti-detachment ring (5) and a protective frame (9) attached to the bottom of the lower oil bladder (3). A ring plate (301) is provided on the outer wall of the lower oil bladder (3). The top surface of the ring plate (301) is attached to the bottom of the clamping ring (4). The anti-detachment ring (5) presses the bottom surface of the ring plate (301) to form an axial stop for the clamping ring (4) and the lower oil bladder (3).

2. The baffle-free split-type crimp-type single-flange overflow ring transmitter transducer as described in claim 1, characterized in that: The limiting support structure includes a supporting step (303) and several limiting ribs (304) disposed in the lower oil bladder (3); the supporting step (303) is axially supported at the lower end face of the piezoelectric ceramic ring (12), and several limiting ribs (304) are evenly distributed along the inner circumferential surface of the lower oil bladder (3), and the limiting ribs (304) are connected to the limiting grooves opened on the outer circular surface of the piezoelectric ceramic ring (12).

3. The barrier-free, split-type, crimp-type, single-flange overflow ring transmitter transducer as described in claim 1, characterized in that: The sealed silicone oil cavity (22) is filled with high thermal conductivity modified silicone oil, the thermal conductivity of which is ≥0.18W / (m·K); the high thermal conductivity modified silicone oil is composed of base silicone oil and thermally conductive filler, the thermally conductive filler is at least one of spherical alumina, aluminum nitride, and nano-graphite, the filler particle size is 50nm~200nm, and the mass blending ratio of the thermally conductive filler is 8%~15%.

4. The baffle-free split-type crimp-type single-flange overflow ring transmitter transducer as described in claim 1, characterized in that: The anti-detachment mechanism also includes a fastening rod (6) fixed on the anti-detachment ring (5); there are multiple fastening rods (6), and the multiple fastening rods (6) are arranged in a ring array on the anti-detachment ring (5). The top end of the fastening rod (6) is fixed with a stud (7), the stud (7) passes through the hole slot opened on the annular flange (1), and a nut (8) is threaded on the stud (7). The nut (8) and the top end of the fastening rod (6) press against the top and bottom surfaces of the annular flange (1) respectively. The bottom end of the fastening rod (6) is connected to the protective frame (9) by a screw (901). A baffle (902) is fixed on the protective frame (9), and the baffle (902) is in contact with the bottom surface of the lower oil bladder (3).

5. The baffle-free split-type crimp-type single-flange overflow ring transmitter transducer as described in claim 1, characterized in that: At least one annular mounting groove is provided on the outer side wall of the bottom end of the annular flange (1), and an oil-filled sealing ring (15) is fixed in the mounting groove. A pressure bladder (13) is fixed on one side bottom of the annular flange (1). The top of the pressure bladder (13) is connected to the oil-filled sealing ring (15) through a channel provided in the annular flange (1), and the anti-detachment ring (5) is pressed against the bottom of the pressure bladder (13).

6. The baffle-free split-type crimp-type single-flange overflow ring transmitter transducer as described in claim 1, characterized in that: The annular flange (1) is provided with an installation hole, and a watertight connector (10) is installed on the installation hole. The watertight connector (10) passes through the installation hole and is electrically connected to the piezoelectric ceramic ring (12) in the sealed silicone oil cavity (22).

7. The barrier-free, split-type, single-flange overflow ring transmitter transducer as described in claim 6, characterized in that: A fixing ring (20) is fixedly sleeved on the watertight connector (10), and an annular groove (2001) is provided on the fixing ring (20). A limiting insertion mechanism (14) is provided on the annular flange (1), and the limiting insertion mechanism (14) is inserted into the annular groove (2001).

8. A baffle-free, split-type, crimp-type, single-flange overflow ring transmitter transducer as described in claim 7, characterized in that: The limiting insertion mechanism (14) includes a pushing block (1401) and a push seat (1406) abutting against one side of the pushing block (1401). A vertical rod (1402) is fixed at the bottom of the pushing block (1401). The vertical rod (1402) is slidably engaged with a guide hole opened on the annular flange (1). An end plate (1404) is fixed at the bottom end of the vertical rod (1402). The end plate (1404) is elastically connected to the annular flange (1) through a first spring (1403). A plug (1405) is fixed on one side of the push seat (1406). A sliding groove (1407) is opened on the plug (1405). The sliding groove (1407) is slidably connected to a slider (1408) fixed at the top of the annular flange (1). The slider (1408) and the plug (1405) are elastically connected through a second spring (1409).

9. A baffle-free, split-type, crimp-type, single-flange overflow ring transmitter transducer as described in claim 8, characterized in that: The pushing block (1401) has a first wedge-shaped surface (14011) on one side, and the push seat (1406) has a second wedge-shaped surface (14061) on one side, with the first wedge-shaped surface (14011) and the second wedge-shaped surface (14061) in contact.

10. A baffle-free, split-type, crimp-type, single-flange overflow ring transmitter transducer as described in claim 8, characterized in that: The slider (1408) is fixed with an upper stop (14081) and a lower stop (14082), which are respectively attached to the top and bottom surfaces of the insert (1405).

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