Highly waterproof integral pressure sensor

Abstract

The utility model provides a highly waterproof integral pressure sensor, which comprises a mounting groove arranged in a shell and used for placing sensing equipment, and a pressure connecting mechanism capable of replacing interfaces of different sizes is arranged at the top of the shell, so that the pressure sensor of the same model can adapt to different equipment and environments. And higher flexibility and adaptability are provided. A waterproof mechanism for protecting internal elements is arranged in the mounting groove, so that moisture, dust and the like can be effectively prevented from entering the sensor from the top and the side wall of the sensor, the sensor is ensured to normally work in severe environments such as high humidity or underwater, additional protection is provided, and the service life of the sensor is prolonged. And direct damage of external physical impact to sensitive elements in the sensor is reduced. A ceramic sensing element is clamped in the ceramic base, the bottom of the ceramic sensing element abuts against a sensor module, and the ceramic sensing element and the sensor module are clamped and fixed through the ceramic base.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure sensors, in particular to a highly waterproof integrated pressure sensor. Background Art

[0002] With the development and popularization of industrial Internet of Things, enterprises have an increasing demand for pressure sensors that can work stably in various environments. These environments often include high humidity conditions such as wet or underwater, so the demand for pressure sensors with high waterproof performance has also increased. Highly waterproof integrated pressure sensors are widely used in many fields such as automobiles, medical, aerospace, etc. These fields have extremely high requirements for the reliability and stability of equipment, especially in harsh working environment conditions. Therefore, the demand for sensors with high waterproof performance has promoted the research and development and improvement of related products. However, in some specific applications, it may be necessary to use a threaded interface of a specific caliber to ensure the stability and sealing of the connection. In some complex installation environments, threaded interfaces of different calibers may be required to adapt to different installation depths or space restrictions. The interface of some existing pressure sensors is a fixed threaded interface, and the size of the threaded interface cannot be changed. Users may need to replace the entire sensor instead of just the threaded interface part, which may increase maintenance costs. At the same time, the internal parts of some existing pressure sensors are not equipped with shock absorption and sealing from both sides. When exposed to water or a humid environment, moisture may penetrate into the sensor, affecting its normal operation or even causing damage.

[0003] The highly waterproof integral pressure sensor with announcement number CN101517387B includes: a pressure detection element in the middle part or on the deep side of a through hole formed in a protrusion, and a main body (base and protrusion) made of ceramic or insulating resin material and molded into a predetermined shape. The pressure sensor is constructed as a molded interconnect device and a conductive pattern is formed on its surface, so that a smaller pressure sensor can be obtained.

[0004] However, when installing the above device, since the threaded interface at the top is fixed, it may not be able to adapt to all types of installation environments or supporting equipment. When installing the pressure sensor, the user needs to ensure that its threaded interface is compatible with the existing system, otherwise additional adapters or conversion components may be required, limiting the scope of use of the device. At the same time, when the device is in use, the components inside the sensor are not equipped with special sealing rings for filling during installation. The sensor components may age faster due to long-term exposure to harsh environments, thereby shortening their service life. The intrusion of water or moisture may interfere with the normal operation of the electronic components inside the sensor, resulting in unstable output signals or errors, affecting the accuracy of the measurement results. Therefore, it is necessary to provide a highly waterproof integrated pressure sensor to solve the above problems. Utility Model Content

[0005] The technical content of the utility model is to provide a highly waterproof integrated pressure sensor.

[0006] In order to solve the above problems, the utility model provides a highly waterproof integrated pressure sensor, including: a mounting groove for placing a sensor device inside a shell, a pressure connection mechanism that can replace interfaces of different sizes is arranged on the top of the shell, a waterproof mechanism for protecting internal components is arranged inside the mounting groove, a ceramic base is placed on the side of the mounting groove close to the pressure connection mechanism, a ceramic sensing element is clamped inside the ceramic base, a sensor module is abutted at the bottom of the ceramic sensing element, and the ceramic sensing element and the sensor module are clamped and fixed by the ceramic base; the pressure connection mechanism includes a mounting seat, wherein the mounting seat is fixed at the top center position of the shell 1; the waterproof mechanism includes a third sealing ring, wherein the third sealing ring abuts against the bottom of the mounting groove.

[0007] As a further solution of the present invention, the pressure connection mechanism includes a threaded interface, a mounting sleeve, a gasket and a mounting seat. The outer side of the threaded interface is evenly covered with threads, and the inner cavity of the threaded interface is connected to the mounting groove.

[0008] As a further solution of the present invention, the mounting seat is a circular ring structure, and the outer side of the mounting seat is evenly covered with threads, and the mounting sleeve is a concave circular ring structure, and the mounting sleeve is threadedly connected to the mounting seat.

[0009] As a further solution of the present invention, the threaded interface is a T-shaped structure, and the outermost radius of the bottom is the same as the inner radius of the mounting sleeve, and a gasket is sleeved between the threaded interface and the mounting sleeve.

[0010] As a further solution of the present invention, the gasket is annular in structure and is made of soft and waterproof material. The outer radius of the gasket is the same as the inner radius of the mounting sleeve, thereby avoiding inaccurate measurements caused by pressure leakage during use.

[0011] As a further solution of the present invention, the ceramic base is a circular convex structure, the bottom of the ceramic base is provided with a groove that matches the sensor module, and the circuit board of the sensor module is composed of a ceramic sheet. The ceramic sensing element is a square structure, and a groove that matches the ceramic sensing element is provided on the top of the ceramic base to limit and fix the sensor module, thereby reducing the displacement of the device that may cause incorrect measurement.

[0012] As a further solution of the utility model, the waterproof mechanism includes a first sealing ring, a second sealing ring and a third sealing ring. The first sealing ring is placed at the position where the mounting groove is connected to the inner cavity of the threaded interface. The third sealing ring is arranged between the mounting groove and the sensor module, and a limiting groove that cooperates with the first sealing ring and the third sealing ring is opened on the mounting groove, providing additional protection for the sensor, reducing direct damage to sensitive elements inside the sensor caused by external physical impact, thereby enhancing its durability and reliability.

[0013] As a further solution of the present invention, the radius of the second sealing ring is the same as that of the ceramic base, and a groove matching the second sealing ring is provided on the outer side of the ceramic base to prevent moisture from entering the interior from the side wall of the sensor, thereby ensuring that the sensor can work normally in harsh environments such as high humidity or underwater.

[0014] In summary, the utility model includes at least one of the following beneficial technical effects:

[0015] First, the utility model records a highly waterproof integrated pressure sensor, which records that by providing a pressure connection mechanism on the housing, the design of a replaceable threaded interface allows the same model of pressure sensor to adapt to different equipment and environments, providing higher flexibility and adaptability. This means that users can choose the most suitable threaded interface according to their needs so that the sensor can be compatible with various systems and devices, which can reduce maintenance costs and extend the service life of the sensor. Different threaded interfaces may be suitable for different pressure ranges and measurement environments. By replacing the interface, it can ensure that the sensor provides accurate measurement results under specific application conditions.

[0016] Second, the utility model records a highly waterproof integral pressure sensor, which records that by providing a waterproof mechanism inside the installation groove, the sealing ring can effectively prevent moisture from entering the interior from the top and side walls of the sensor, ensuring that the sensor can work normally in harsh environments such as high humidity or underwater. The sealing ring provides additional protection for the sensor, reduces direct damage to sensitive components inside the sensor by external physical impact, thereby enhancing its durability and reliability, and helps to block dust, dirt and other corrosive substances from entering the sensor, reducing the impact of these factors on the performance of the sensor and extending its service life. Due to the protective effect of the sealing ring, the frequency of maintenance required for the sensor may be reduced, thereby reducing maintenance costs and downtime, reducing the impact of external factors on measurement results, and ensuring the stability and accuracy of the output signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1This is a schematic diagram of the overall structure of the highly waterproof integrated pressure sensor of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the highly waterproof integrated pressure sensor of the utility model;

[0020] Figure 3 It is a schematic cross-sectional view of the pressure connection mechanism structure of the highly waterproof integrated pressure sensor of the utility model;

[0021] Figure 4 It is a schematic cross-sectional view of the housing structure of the highly waterproof integrated pressure sensor of the utility model;

[0022] Figure 5 It is a schematic diagram of the waterproof mechanism structure of the highly waterproof integrated pressure sensor of the utility model;

[0023] Figure 6 This is a schematic diagram of the structural decomposition of the ceramic base and sensor module of the highly waterproof integrated pressure sensor of the utility model;

[0024] Figure 7 The utility model is a schematic diagram of the connector and sensor module structure of the highly waterproof integrated pressure sensor.

[0025] Figure numerals: 1. housing; 2. pressure connection mechanism; 21. threaded interface; 22. mounting sleeve; 23. gasket; 24. mounting seat; 3. mounting groove; 4. waterproof mechanism; 41. first sealing ring; 42. second sealing ring; 43. third sealing ring; 5. ceramic base; 6. sensor module; 7. ceramic sensing element. DETAILED DESCRIPTION

[0026] Please refer to Figure 1-7 The highly waterproof integrated pressure sensor comprises: a mounting groove 3 for placing a sensing device in a housing 1, a pressure connection mechanism 2 for replacing interfaces of different sizes is arranged on the top of the housing 1, a waterproof mechanism 4 for protecting internal components is arranged inside the mounting groove 3, a ceramic base 5 is placed on the side of the mounting groove 3 close to the pressure connection mechanism 2, a ceramic sensing element 7 is clamped inside the ceramic base 5, a sensor module 6 is abutted at the bottom of the ceramic sensing element 7, and the ceramic sensing element 7 and the sensor module 6 are clamped and fixed by the ceramic base 5; the pressure connection mechanism 2 comprises a mounting seat 24, wherein the mounting seat 24 is fixed at the top center position of the housing 1; the waterproof mechanism 4 comprises a third sealing ring 43, wherein the third sealing ring 43 abuts at the bottom of the mounting groove 3.

[0027] Preferably, the pressure connection mechanism 2 includes a threaded interface 21, a mounting sleeve 22, a gasket 23 and a mounting seat 24. The outer side of the threaded interface 21 is evenly covered with threads, and the inner cavity of the threaded interface 21 is communicated with the mounting groove 3. The mounting seat 24 is a circular ring structure, and the outer side of the mounting seat 24 is evenly covered with threads. The mounting sleeve 22 is a concave circular ring structure, and the mounting sleeve 22 is threadedly connected to the mounting seat 24. The threaded interface 21 is a T-shaped structure, and the outermost radius of the bottom is the same as the inner radius of the mounting sleeve 22. A gasket 23 is sleeved between the threaded interface 21 and the mounting sleeve 22. When in use, a threaded interface 21 of a suitable size is selected according to the needs of the pressure device to be measured. The gasket 23 is a circular ring structure and has a soft material. And it is made of waterproof material, the outer radius of the gasket 23 is the same as the inner radius of the mounting sleeve 22, the gasket 23 is inserted from the threaded side of the threaded interface 21, and the threaded interface 21 is inserted into the mounting sleeve 22, and the mounting sleeve 22 is threadedly connected in the mounting seat 24, and ensure that the gasket 23 is tightly connected to the threaded interface 21 and the mounting sleeve 22. When the threaded interface 21 is damaged or needs to be replaced, the user can easily remove the old interface and install a new interface without replacing the entire sensor, which can reduce maintenance costs and extend the service life of the sensor. The design of the replaceable threaded interface 21 allows the same model of pressure sensor to adapt to different equipment and environments, providing higher flexibility and adaptability.

[0028] Preferably, the ceramic base 5 is a circular convex structure, a groove matching the sensor module 6 is provided at the bottom of the ceramic base 5, and the circuit board of the sensor module 6 is composed of a ceramic sheet, the ceramic sensing element 7 is a square structure, and a groove matching the ceramic sensing element 7 is provided at the top of the ceramic base 5, the waterproof mechanism 4 includes a first sealing ring 41, a second sealing ring 42 and a third sealing ring 43, the first sealing ring 41 is placed at the portion where the mounting groove 3 is connected to the inner cavity of the threaded interface 21, the third sealing ring 43 is arranged between the mounting groove 3 and the sensor module 6, and a limiting groove matching the first sealing ring 41 and the third sealing ring 43 is provided on the mounting groove 3, the first sealing ring 41 and the third sealing ring 43 are in contact with the sensor module 6 and the ceramic sensing element 7, when working, the pressure acts on the ceramic sensing element 7 to produce a slight deformation, and a voltage signal proportional to the pressure is generated through the Wheatstone bridge, the first sealing ring 41 is in contact between the mounting groove 3 and the ceramic sensing element 7, thereby buffering the ceramic sensing element 7 and ensuring the air tightness of the mounting groove 3.

[0029] Preferably, the radius of the second sealing ring 42 is the same as the radius of the ceramic base 5, and a groove matching the second sealing ring 42 is opened on the outer side of the ceramic base 5, and the second sealing ring 42 is sleeved on the ceramic base 5. By arranging the second sealing ring 42 on the ceramic base 5, it is possible to effectively prevent moisture from penetrating into the sensor, thereby improving the waterproof performance of the sensor, which is very important for using the sensor in a humid or watery environment, and can prevent the sensor from being damaged or failing due to moisture intrusion. The existence of the second sealing ring 42 can reduce the vibration and impact inside the sensor, thereby reducing the error and drift of the sensor, and maintaining accurate measurement results during long-term operation.

[0030] The working principle of the highly waterproof integrated pressure sensor provided by the utility model is as follows:

[0031] Select the appropriate sensor model according to the pressure range and environmental conditions to be measured.

[0032] Select a threaded interface 21 of appropriate size according to the needs of the pressure device to be tested. The gasket 23 is a circular ring structure and is made of soft and waterproof material. The outer radius of the gasket 23 is the same as the inner radius of the mounting sleeve 22. Insert the gasket 23 from the threaded side of the threaded interface 21, insert the threaded interface 21 into the mounting sleeve 22, and thread the mounting sleeve 22 into the mounting seat 24, and ensure that the gasket 23 is tightly connected to the threaded interface 21 and the mounting sleeve 22. When the threaded interface 21 is damaged or needs to be replaced, the user can easily remove the old interface and install a new interface, and install the installed threaded interface 21 of the sensor on the object to be measured to ensure a firm connection and good sealing.

[0033] After installing the sensor, it needs to be calibrated to ensure its accuracy. Perform the calibration operation according to the sensor's instruction manual, turn on the power and start the sensor, let it start working, wait for a while, read the data output by the sensor and record it. You can use data acquisition equipment or other tools to obtain data.

[0034] The threaded interface 21 is threadedly connected to the pressure source of the device to be tested, and the power supply voltage of the pressure sensor is ensured to be within the range of 5-30VDC to meet its normal power supply requirements, ensure that it can accurately detect pressure changes, pass the rated excitation power to the sensor, and ensure that there is enough stabilization time for accurate measurement. During the pressure measurement process, the ceramic sensing element 7 will deform due to slight deformation, and the first sealing ring 41 on the ceramic sensing element 7 and the third sealing ring 43 at the bottom will buffer the components inside the pressure sensor and ensure the airtightness of the mounting groove 3. After waiting for a period of time, read the data output by the sensor and record it. Data acquisition equipment or other tools can be used to obtain data.

[0035] When the threaded interface 21 needs to be replaced again, turn off the power supply and remove the sensor, and replace it with a new threaded interface 21 of another size as needed. During use, regularly monitor the performance of the sensor and perform necessary maintenance to ensure long-term stable operation.

[0036] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. Highly waterproof integrated pressure sensor, including: A mounting groove (3) for placing a sensor device is provided inside a housing (1), characterized in that: a pressure connection mechanism (2) capable of replacing interfaces of different sizes is provided on the top of the housing (1), a waterproof mechanism (4) for protecting internal components is provided inside the mounting groove (3), a ceramic base (5) is placed on one side of the mounting groove (3) close to the pressure connection mechanism (2), a ceramic sensing element (7) is clamped inside the ceramic base (5), a sensor module (6) is abutted against the bottom of the ceramic sensing element (7), and the ceramic sensing element (7) and the sensor module (6) are clamped and fixed via the ceramic base (5); The pressure connection mechanism (2) comprises a mounting seat (24), wherein the mounting seat (24) is fixed at a top center position of the housing (1); The waterproof mechanism (4) comprises a third sealing ring (43), wherein the third sealing ring (43) abuts against the bottom of the installation groove (3).

2. The highly waterproof integrated pressure sensor according to claim 1, characterized in that: The pressure connection mechanism (2) comprises a threaded interface (21), a mounting sleeve (22), a gasket (23) and a mounting seat (24); the outer side of the threaded interface (21) is evenly covered with threads, and the inner cavity of the threaded interface (21) is in communication with the mounting groove (3).

3. The highly waterproof integrated pressure sensor according to claim 2, characterized in that: The mounting seat (24) is a circular ring-shaped structure, and the outer side of the mounting seat (24) is evenly covered with threads. The mounting sleeve (22) is a concave circular ring-shaped structure, and the mounting sleeve (22) is threadedly connected to the mounting seat (24).

4. The highly waterproof integrated pressure sensor according to claim 3, characterized in that: The threaded interface (21) is a T-shaped structure, and the outermost radius of the bottom is the same as the inner radius of the mounting sleeve (22). A washer (23) is sleeved between the threaded interface (21) and the mounting sleeve (22).

5. The highly waterproof integrated pressure sensor according to claim 4, characterized in that: The gasket (23) is an annular structure and is made of a soft and waterproof material. The outer radius of the gasket (23) is the same as the inner radius of the mounting sleeve (22).

6. The highly waterproof integrated pressure sensor according to claim 1, characterized in that: The ceramic base (5) is a circular convex structure, a groove matching the sensor module (6) is provided at the bottom of the ceramic base (5), and the circuit board of the sensor module (6) is composed of a ceramic sheet, the ceramic sensing element (7) is a square structure, and a groove matching the ceramic sensing element (7) is provided at the top of the ceramic base (5).

7. The highly waterproof integrated pressure sensor according to claim 1, characterized in that: The waterproof mechanism (4) comprises a first sealing ring (41), a second sealing ring (42) and a third sealing ring (43); the first sealing ring (41) is placed at a portion where the mounting groove (3) is connected to the inner cavity of the threaded interface (21); the third sealing ring (43) is arranged between the mounting groove (3) and the sensor module (6); and a limiting groove for matching the first sealing ring (41) and the third sealing ring (43) is provided on the mounting groove (3).

8. The highly waterproof integrated pressure sensor according to claim 7, characterized in that: The radius of the second sealing ring (42) is the same as the radius of the ceramic base (5), and a groove matching the second sealing ring (42) is provided on the outer side of the ceramic base (5).

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