A waterproof and pressure-resistant vibration sensor

Abstract

The application relates to a waterproof and pressure-resistant vibration sensor in the field of vibration sensors, which comprises a vibration sensor main body, the outer side of the vibration sensor main body is provided with an outer protective shell, the outer protective shell comprises a cylindrical shell and a flange ring, a reinforcing structure sleeve is fixedly connected in the outer protective shell, a fixing ring is clamped between the reinforcing structure sleeve and the outer protective shell, characterized in that: an inner closed shell is clamped in the reinforcing structure sleeve, a plurality of positioning screws are connected between the inner closed shell and the fixing ring, and compression springs are sleeved on the outer sides of the positioning screws; a bottom sealing ring covering the reinforcing structure sleeve and the inner closed shell is clamped in the outer protective shell, an annular groove matched with the outer protective shell is formed in the bottom sealing ring, and a sealing ring located in the annular groove is connected between the outer protective shell and the bottom sealing ring; high-precision measurement and stable transmission of the vibration sensor are realized, the waterproof and pressure-resistant performance of the sensor is remarkably improved, and stable work of the sensor in a harsh environment is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to a vibration sensor, in particular to a waterproof and pressure-resistant vibration sensor applied in the field of vibration sensors. BACKGROUND

[0002] Existing vibration sensors mainly include piezoelectric, capacitive, electromagnetic, optical fiber and MEMS (Micro-Electro-Mechanical System) vibration sensors. Piezoelectric vibration sensors use the property of some materials to generate electric charge when subjected to mechanical stress, and are widely used in industrial and automotive fields. Capacitive vibration sensors detect vibration by measuring the change in capacitance caused by vibration, and are suitable for low-frequency and high-precision measurement. Electromagnetic vibration sensors are based on Faraday's law of electromagnetic induction, and generate induced current through the relative movement of coil and magnet, which are commonly used in building and earthquake monitoring. Optical fiber vibration sensors use the principles of light interference and scattering, and have the advantages of anti-electromagnetic interference and long-distance transmission, and are suitable for security monitoring and communication systems. MEMS vibration sensors are widely used in consumer electronics and wearable devices due to their miniaturization, low cost and low power consumption.

[0003] Chinese patent CN110196096A discloses an underwater vibration sensor with good waterproof performance and stable connection, which comprises a sensor body, a sensing needle head is arranged at the bottom of the sensor body, a connecting block is fixedly connected to the top of the sensor body, an electric wire is electrically connected to the top of the connecting block, a threaded column is fixedly connected to the top of the sensor body, a fixed sheet is fixedly connected to the outside of the threaded column, a waterproof sheet is sleeved on the outside of the threaded column and located above the fixed sheet, a fixed nut is threadedly connected to the outside of the threaded column and located above the waterproof sheet, a waterproof pad is arranged between the waterproof sheet and the connecting block, and two fixed blocks are fixedly connected to the front of the sensor body. The underwater vibration sensor with good waterproof performance and stable connection realizes stable connection, reduces the damage probability of the sensor, realizes better waterproof performance, and avoids water ingress.

[0004] The Chinese invention patent CN111403945A specification discloses a kind of high-temperature-resistant waterproof connector for nuclear power vibration sensor, with Simple structure, firm and stable, high temperature resistance, water vapor prevention and other characteristics;Using the inner and outer boss, boss groove, matching thread, split slot, locking positioning block etc. in the application effectively solves the problems such as connector positioning, locking, fixing etc.;Using insulating ceramic surface glazing, second shell and cable welding, locking positioning block and cable welding, shell and cable welding, first shell and shell welding etc. effectively solves the problems such as connector insulation, sealing, waterproof etc.;Using insulating ceramic material, porcelain sealing alloy material, stainless steel material etc. effectively solves the problems such as connector high-temperature resistance, waterproof etc.;At the same time, the first shell outer thread, first pin etc. in the application matches the commercial cable socket, and has wide market promotion value in high-temperature, high-humidity environment fields such as nuclear power.

[0005] The existing vibration sensor has some defects in waterproof and pressure resistance, such as insufficient sealing performance, easy to fail in high-pressure or underwater environment; some sensor designs do not fully consider the influence of underwater pressure and water seepage on internal electronic components, resulting in reduced long-term reliability. SUMMARY

[0006] The technical problems to be solved by the present application are the defects of the existing vibration sensor in waterproof and pressure resistance, such as insufficient sealing performance, easy to fail in high-pressure or underwater environment; some sensor designs do not fully consider the influence of underwater pressure and water seepage on internal electronic components, resulting in reduced long-term reliability.

[0007] To solve the above problems, the present application provides a waterproof and pressure-resistant vibration sensor, which comprises a vibration sensor main body, an outer protective shell is arranged on the outer side of the vibration sensor main body, the outer protective shell comprises a cylindrical shell and a flange ring, a reinforcing structure sleeve is fixedly connected in the outer protective shell, a fixing ring is clamped between the reinforcing structure sleeve and the outer protective shell, an inner closed shell is clamped in the reinforcing structure sleeve, a plurality of positioning screws are connected between the inner closed shell and the fixing ring, and a compression spring is sleeved on the outer side of the positioning screw;

[0008] A bottom sealing ring covering the reinforcing structure sleeve and the inner closed shell is clamped in the outer protective shell, an annular groove matched with the outer protective shell is formed on the bottom sealing ring, and a sealing ring located in the annular groove is connected between the outer protective shell and the bottom sealing ring;

[0009] A plurality of threaded positioning sleeves are threadedly connected between the bottom sealing ring and the inner closed shell, a long screw rod is inserted into the threaded positioning sleeve, a snap ring is threadedly connected to the long screw rod, and the long screw rod and the snap ring clamp the sealing ring tightly;

[0010] A sliding groove matched with the position of the long screw rod is formed on the outer end of the inner closed shell, a damping sliding block is slidably connected in the sliding groove, the top end of the long screw rod is threadedly connected with the damping sliding block, and an electromagnet matched with the damping sliding block is fixedly connected to the top end of the sliding groove.

[0011] The aforementioned waterproof and pressure-resistant vibration sensor significantly improves the sensor's pressure resistance, enabling it to maintain stable operation under high-pressure environments.

[0012] As a further improvement of this application, the top of the inner enclosure is provided with a through hole that matches the wiring terminal of the vibration sensor body, and the outer end of the opening at the top of the through hole is fixedly connected with a terminal block that matches the electromagnet.

[0013] A waterproof terminal block is fixedly connected to the top of the outer protective shell, and a terminal cover that matches both the terminal block and the waterproof terminal block is fixedly connected to the top of the waterproof terminal block.

[0014] As a further improvement to this application, the reinforced structural sleeve has a honeycomb structure inside and is made of a high-strength alloy.

[0015] As a further improvement of this application, the sealing ring includes a movable ring that is clamped by a long screw and a retaining ring. The movable ring is covered with a water-absorbing and expanding adhesive layer, and the water-absorbing and expanding adhesive layer has positioning holes that match the long screw.

[0016] As a further improvement of this application, a retaining groove is provided in the middle of the slide, and an elastic block that matches the retaining groove is fixedly connected to the damping slider. When the damping slider moves up and down to the retaining groove, the elastic block is engaged in the retaining groove, so that the damping slider is limited and fixed, and the sealing ring is pressed.

[0017] As another improvement of this application, a buffer pad ring that matches the body of the vibration sensor is snapped onto the inner wall of the inner enclosure.

[0018] As a further improvement to this application, the waterproof terminal block includes a connector that matches the terminal cover, an outer waterproof ring connecting the connector and the outer protective shell, and an inner waterproof ring fitted onto the end of the connector near the terminal cover.

[0019] As a further improvement to this application, an auxiliary protection system is also included, which includes a control module, a data acquisition module, a data processing module, and a data storage module.

[0020] The control module receives and processes signals from the waterproof and pressure-resistant vibration sensor, and determines whether to activate the electromagnet or trigger an alarm based on preset logic.

[0021] The data acquisition module is used to continuously monitor the working status of the waterproof and pressure-resistant vibration sensor to ensure the real-time performance and accuracy of the data.

[0022] The data processing module processes and analyzes the data collected by the data acquisition module, identifies vibration sensor anomalies, and provides decision support for the control module.

[0023] The data storage module is used for storing historical data, analysis results and system log information.

[0024] In summary, the present application realizes high-precision measurement and stable transmission of the vibration sensor, and significantly improves the waterproof and pressure-resistant performance of the sensor. Through the combination of the outer protective shell and the reinforced structure sleeve, and the multiple sealing design of the inner closed shell and the sealing ring, water infiltration is effectively prevented, and stable operation of the sensor in harsh environments is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a front perspective view of the first embodiment of the present application;

[0026] Figure 2 is an exploded view of the first embodiment of the present application;

[0027] Figure 3 is a bottom perspective view of the first embodiment of the present application;

[0028] Figure 4 is a sectional view of the first embodiment of the present application;

[0029] Figure 5 is Figure 3 is a structural schematic view of A in FIG. 1;

[0030] Figure 6 is Figure 3 is a structural schematic view of B in FIG. 1;

[0031] Figure 7 is a system block diagram of the second embodiment of the present application.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1, vibration sensor body; 2, outer protective shell; 3, reinforced structure sleeve; 4, inner closed shell; 41, electromagnet; 42, damping slider; 5, fixing ring; 6, bottom sealing ring; 7, sealing ring; 8, threaded positioning sleeve; 9, screw; 10, snap ring; 11, waterproof terminal block. DETAILED DESCRIPTION

[0034] The two embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0035] First embodiment:

[0036] Figure 1 - Figure 6It shows a waterproof and pressure-resistant vibration sensor, which comprises a vibration sensor body 1, an outer protective shell 2 arranged outside the vibration sensor body 1, the outer protective shell 2 comprising a cylindrical shell and a flange ring for fixing with a mounting surface, and a reinforced structure sleeve 3 fixedly connected inside the outer protective shell 2, the reinforced structure sleeve 3 being in a honeycomb structure inside and being made of high-strength alloy;

[0037] A fixing ring 5 is clamped between the reinforced structure sleeve 3 and the outer protective shell 2, and an inner closed shell 4 is clamped inside the reinforced structure sleeve 3, the inner closed shell 4 and the reinforced structure sleeve 3 being further fixed by sealing glue;

[0038] A plurality of positioning screws are connected between the inner closed shell 4 and the fixing ring 5, and compression springs are sleeved outside the positioning screws; a buffer pad ring matched with the vibration sensor body 1 is clamped on the inner wall of the inner closed shell 4.

[0039] A bottom sealing ring 6 covering the reinforced structure sleeve 3 and the inner closed shell 4 is clamped inside the outer protective shell 2, and the bottom sealing ring 6 and the outer protective shell 2 are fixed by sealing glue, an annular groove matched with the outer protective shell 2 is formed on the bottom sealing ring 6, and a sealing ring 7 located in the annular groove is connected between the outer protective shell 2 and the bottom sealing ring 6; a moisture sensor is embedded and mounted at the bottom sealing ring 6, and the moisture sensor can detect water seepage when water seeps in the annular groove.

[0040] A plurality of threaded positioning sleeves 8 are threadedly connected between the bottom sealing ring 6 and the inner closed shell 4, long screw rods 9 are inserted into the threaded positioning sleeves 8, snap rings 10 are threadedly connected to the long screw rods 9, and the long screw rods 9 and the snap rings 10 clamp the sealing ring 7;

[0041] The sealing ring 7 comprises a movable ring clamped by the long screw rods 9 and the snap rings 10, a water-absorbing and expanding glue layer is laid on the movable ring, and positioning holes matched with the long screw rods 9 are formed on the water-absorbing and expanding glue layer.

[0042] A sliding groove matched with the position of the long screw rod 9 is formed at the outer end of the inner closed shell 4, a damping sliding block 42 is slidingly connected in the sliding groove, the top end of the long screw rod 9 is threadedly connected with the damping sliding block 42, an electromagnet 41 matched with the damping sliding block 42 is fixedly connected at the top end of the sliding groove, and a permanent magnet matched with the electromagnet 41 is installed in the damping sliding block 42;

[0043] A through hole matched with the wiring end of the vibration sensor body 1 is formed at the top end of the inner closed shell 4, and an electric wire column matched with the electromagnet 41 is fixedly connected at the outer end of the opening at the top end of the through hole;

[0044] When the electromagnet 41 works, the damping sliding block 42 repels and moves downward, so that the long screw rod 9 drives the sealing ring 7 to move downward, the sealing ring 7 is squeezed, the sealing ring 7 is further closed to the flange ring, and when the flange ring is loose, the gap between the device and the mounting surface is closed by the sealing ring 7, so that water does not seep into the vibration sensor body 1.

[0045] The top end of the outer protective shell 2 is fixedly connected with a waterproof terminal block 11, and the top end of the waterproof terminal block 11 is fixedly connected with a terminal cover matched with the terminal post and the terminal end of the waterproof terminal block 11;

[0046] The middle part of the sliding groove is provided with a buckling groove, and the damping sliding block 42 is fixedly connected with an elastic clamping block matched with the buckling groove. When the damping sliding block 42 moves up and down to the buckling groove, the elastic clamping block is clamped into the buckling groove, so that the damping sliding block 42 is fixedly limited, and at this time the sealing ring 7 is compressed tightly;

[0047] The waterproof terminal block 11 includes a connecting seat matched with the terminal cover, and an outer waterproof ring is connected between the connecting seat and the outer protective shell 2. The connecting seat is sleeved with an inner waterproof ring at one end close to the terminal cover.

[0048] The scheme can realize high-precision measurement and stable transmission of the vibration sensor body 1. Through the combination of the outer protective shell 2 and the reinforced structure sleeve 3, the pressure resistance of the sensor is significantly improved, so that it can work stably in a high-pressure environment. At the same time, the multiple sealing design of the inner closed shell 4 and the sealing ring 7 effectively prevents water from penetrating, thereby ensuring the waterproof performance of the sensor. In addition, the cooperation of the electromagnet 41 and the damping sliding block 42 realizes dynamic adjustment of the sealing ring 7, further enhancing the sealing effect of the sensor.

[0049] The second embodiment is as follows:

[0050] Figure 7 It is shown that the auxiliary protection system includes a control module, a data acquisition module, a data processing module and a data storage module.

[0051] The control module is used for receiving and processing signals from the waterproof and pressure-resistant vibration sensor, and determining whether the electromagnet 41 needs to be started or an alarm needs to be given according to a preset logic.

[0052] The data acquisition module is used for continuously monitoring the working state of the waterproof and pressure-resistant vibration sensor, ensuring the real-time and accuracy of the data, and the moisture sensor and the vibration sensor body 1 are signal connected with the data acquisition module.

[0053] The data processing module processes and analyzes the data collected by the data acquisition module, identifies the abnormal vibration sensor 1, and provides decision support for the control module.

[0054] The data storage module is used for storing historical data, analysis results and system logs and the like.

[0055] The auxiliary protection system of the scheme realizes comprehensive monitoring and intelligent management of the working state of the vibration sensor main body 1. The control module as the center of the system can quickly respond to the signals returned by the moisture sensor and the vibration sensor main body 1, and judge whether intervention measures need to be taken according to the signals, such as starting the electromagnet 41 to adjust the compression degree of the sealing ring 7 or triggering the alarm mechanism to remind the operator to pay attention when the vibration data is greater than the safety threshold or the moisture sensor detects moisture.

[0056] In summary, the scheme realizes high-precision measurement and stable transmission of the vibration sensor, and significantly improves the waterproof and pressure-resistant performance of the sensor. Through the combination of the outer protective shell 2 and the reinforced structure sleeve 3, and the multiple sealing design of the inner closed shell 4 and the sealing ring 7, water infiltration is effectively prevented, ensuring the stable operation of the sensor in harsh environments.

[0057] In combination with the current actual demand, the above-mentioned embodiments adopted by the present application are not limited to this, various changes within the knowledge range of those skilled in the art without departing from the concept of the present application still fall within the protection scope of the present application.

Claims

1. A waterproof and pressure-resistant vibration sensor, comprising a vibration sensor main body (1), the outer side of the vibration sensor main body (1) is provided with an outer protective shell (2), the outer protective shell (2) comprises a cylindrical shell and a flange ring, a reinforcing structure sleeve (3) is fixedly connected in the outer protective shell (2), and a fixing ring (5) is clamped between the reinforcing structure sleeve (3) and the outer protective shell (2), characterized in that: The reinforcing structure sleeve (3) is clamped with an inner closed shell (4), a plurality of positioning screws are connected between the inner closed shell (4) and the fixed ring (5), and the outer side of the positioning screw is sleeved with a compression spring; ​ The bottom sealing ring (6) covering the reinforcing structure sleeve (3) and the inner closed shell (4) is clamped in the outer protective shell (2), the bottom sealing ring (6) is provided with an annular groove matched with the outer protective shell (2), and the sealing ring (7) in the annular groove is connected between the outer protective shell (2) and the bottom sealing ring (6). A plurality of threaded positioning sleeves (8) are threadedly connected between the bottom sealing ring (6) and the inner closed shell (4), the inner insertion of the threaded positioning sleeve (8) is provided with a long screw rod (9), the long screw rod (9) is threadedly connected with a snap ring (10), and the long screw rod (9) and the snap ring (10) clamp the sealing ring (7); The outer end of the inner closed shell (4) is provided with a sliding groove matched with the position of the long screw rod (9), the sliding groove is slidably connected with a damping sliding block (42), and the top end of the long screw rod (9) is threadedly connected with the damping sliding block (42), and the top end of the sliding groove is fixedly connected with an electromagnet (41) matched with the damping sliding block (42); The sealing ring (7) comprises a movable ring clamped by the long screw rod (9) and the snap ring (10), the movable ring is provided with a water-absorbing and expanding glue layer, and the water-absorbing and expanding glue layer is provided with a positioning hole matched with the long screw rod (9); the middle part of the sliding groove is provided with a buckle groove, the damping sliding block (42) is fixedly connected with an elastic clamping block matched with the buckle groove, and when the damping sliding block (42) moves up and down to the buckle groove, the elastic clamping block is clamped into the buckle groove, so that the damping sliding block (42) is fixedly positioned, and at this time the sealing ring (7) is compressed.

2. The waterproof and pressure-resistant vibration sensor according to claim 1, characterized in that: The top end of the inner closed shell (4) is provided with a through hole matched with the wiring end of the vibration sensor main body (1), and the outer end of the opening at the top end of the through hole is fixedly connected with a wiring column matched with the electromagnet (41); The top end of the outer protective shell (2) is fixedly connected with a waterproof wiring seat (11), and the top end of the waterproof wiring seat (11) is fixedly connected with a wiring cover matched with the wiring end of the wiring column and the waterproof wiring seat (11).

3. The waterproof and pressure-resistant vibration sensor according to claim 1, wherein: The reinforcing structure sleeve (3) is internally provided with a honeycomb structure, and the reinforcing structure sleeve (3) is made of high-strength alloy.

4. The waterproof and pressure-resistant vibration sensor according to claim 1, wherein: The inner wall of the inner closed shell (4) is clamped with a buffer pad ring matched with the vibration sensor main body (1).

5. The waterproof and pressure-resistant vibration sensor according to claim 2, characterized in that: The waterproof wiring seat (11) comprises a connecting seat matched with the wiring cover, an outer waterproof ring connected between the connecting seat and the outer protective shell (2), and an inner waterproof ring sleeved with one end of the connecting seat close to the wiring cover.

6. A waterproof and pressure-resistant vibration sensor according to any one of claims 1-5, characterized in that: It also includes an auxiliary protection system, which comprises a control module, a data acquisition module, a data processing module and a data storage module; The control module is used for receiving and processing signals from the waterproof pressure-resistant vibration sensor, and determining whether the electromagnet (41) needs to be started or alarmed according to the preset logic; The data acquisition module is used for continuously monitoring the working state of the waterproof pressure-resistant vibration sensor to ensure the real-time and accuracy of the data. The data processing module processes and analyzes the data collected by the data acquisition module, identifies the abnormality of the vibration sensor main body (1), and provides decision support for the control module. The data storage module is used for storing historical data, analysis results and system log information.

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