Flat membrane type pressure sensor

Abstract

A flat membrane type pressure sensor comprises a module shell, a flat membrane pressure inlet head and a membrane. A pressure sensing module is arranged in the module shell and fixedly connected with the module shell. A wire outlet head is arranged on the end face of one side of the module shell, the wire outlet head is fixedly connected with the module shell, a shell is arranged on the end face of the lower portion of the module shell, and the shell is fixedly connected with the module shell. The end face of the lower portion of the shell is connected with a flat membrane pressing head, the flat membrane pressing head is fixedly connected with the shell, the lower portion of the flat membrane pressing head is connected with a membrane, and the membrane is connected with the flat membrane pressing head in an open mode. The utility model has the advantages that: by adopting open connection, particles can be prevented from being accumulated or blocked in a sensor channel. Compared with a closed structure of a traditional pressure sensor, the open connection can better process the particle fluid, reduce the risk of blockage, and improve the stability and reliability of the sensor.

Description

Technical Field

[0001] The utility model relates to the field of pressure sensors, in particular to a flat membrane pressure sensor. Background Art

[0002] The background of pressure sensors can be traced back to the 1960s, when the demand for industrial automation and intelligence continued to increase, and the demand for measurement and control of various physical quantities was also increasing. Pressure, as an important physical quantity, plays a vital role in the monitoring and control of industrial processes, mechanical equipment and environmental quality. Therefore, researching and developing reliable and accurate pressure sensors has become an urgent need for engineering and technical personnel. With the development of science and technology, the design and manufacturing technology of pressure sensors has also been significantly improved. Currently, commonly used pressure sensors include sensors of different principles such as piezoresistive, capacitive, magnetoelectric, and resonant. They have the advantages of high sensitivity, fast response, high accuracy, and good stability, and can meet the needs of different application scenarios. Pressure sensors have a wide range of applications in various fields. In the industrial field, it is widely used in pressure control, monitoring and control of fluid systems, and pressure measurement of gases and liquids. In the automotive industry, pressure sensors are used for engine control, braking systems, tire pressure monitoring, etc. In the medical field, it is used for blood pressure measurement, ventilators, drug delivery, etc. In the field of environmental protection, pressure sensors can be used for atmospheric pressure monitoring, water quality monitoring, gas detection, etc. In short, as an important measurement and control tool, pressure sensors are constantly being improved and innovated to meet the needs of pressure monitoring in various fields. With the advancement of technology and the expansion of application scope, the development prospects of pressure sensors are still very broad.

[0003] However, the pressure sensor in the prior art still has the following disadvantages:

[0004] 1. The traditional pressure sensors in the prior art are easily clogged when measuring fluids with particles. Such disadvantages include: Blockage leads to errors: The blockage of particles will affect the passage of the fluid through the sensor, resulting in inaccurate pressure signals output by the sensor. Such errors may cause deviations in the measurement results, affecting the accurate control and judgment of pressure in the application. Impact on sensor performance: The blockage of particles will affect the sensitivity and response speed of the sensor. The blockage may hinder the contact between the sensor and the measured fluid, reduce the sensitivity of the sensor, and lead to a decrease in measurement accuracy. At the same time, the blockage also reduces the response speed of the sensor to pressure fluctuations, resulting in signal delays. Cleaning and maintenance are required: Since traditional pressure sensors are prone to clogging, they need to be cleaned and maintained frequently. This increases the complexity of operation and maintenance costs, and will cause the sensor to be unable to be used normally during cleaning and maintenance. Limited application scenarios: Due to the existence of the blockage problem, the application of traditional pressure sensors in certain liquids and gases is limited. In particular, for fluids containing a large number of particles, traditional pressure sensors may not meet the requirements of accurate measurement and stable operation. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a flat membrane pressure sensor.

[0006] In order to solve the above problems, the technical solution of the utility model is: a flat diaphragm pressure sensor, including a module shell, a flat diaphragm pressure head and a diaphragm; a pressure sensing module is arranged inside the module shell, and the pressure sensing module is fixedly connected to the module shell.

[0007] Furthermore, a wire outlet is provided on one end surface of the module shell, and the wire outlet is fixedly connected to the module shell. The wire outlet is used to connect the line and convert the signal of the pressure sensing module into an electrical signal for transmission.

[0008] Furthermore, a shell is provided on the lower end surface of the module shell, and the shell is fixedly connected to the module shell.

[0009] Furthermore, the lower end surface of the shell is connected to a flat membrane pressure inlet head, and the flat membrane pressure inlet head is fixedly connected to the shell.

[0010] Furthermore, a diaphragm is connected below the flat diaphragm pressure inlet head, and the diaphragm is openly connected to the flat diaphragm pressure inlet head, which can effectively prevent blockage.

[0011] The advantages of the utility model compared with the existing technology are:

[0012] 1. The flat diaphragm pressure sensor of the utility model adopts an open connection, which can effectively prevent blockage. Such advantages include: Preventing blockage: The design of the open connection can prevent particles from accumulating or blocking in the sensor channel. Compared with the closed structure of the traditional pressure sensor, the open connection can better handle particulate fluids, reduce the risk of blockage, and improve the stability and reliability of the sensor. Improve sensitivity: The open connection allows the sensor to contact the measured fluid more directly, improving the sensitivity of the sensor to pressure changes. By reducing the damping and interference between the fluid and the sensor, the open connection can provide more accurate and real-time pressure measurement results. Convenient cleaning and maintenance: Due to the design of the open connection, the sensor can be cleaned and maintained more easily. There is no need to disassemble the closed structure, and it can be cleaned only through the cleaning channel or interface, saving maintenance time and cost. Strong adaptability: The design of the open connection allows the sensor to adapt to different types of fluids and environments. Whether it is liquid or gas, the sensor can be connected to the system through the corresponding interface to achieve a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a stereogram of the flat membrane pressure sensor of the utility model.

[0014] As shown in the figure: 1. Module shell; 2. Wire outlet; 3. Shell; 4. Flat diaphragm pressure inlet; 5. Diaphragm. DETAILED DESCRIPTION

[0015] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0016] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0017] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0018] like Figure 1 As shown, the technical solution of the utility model is: a flat membrane pressure sensor, including a module shell 1, a flat membrane pressure head 4 and a diaphragm 5, the module shell 1 is internally connected to a pressure sensing module, the pressure sensing module is fixedly connected to the module shell 1, and the pressure sensing module is used for pressure detection.

[0019] like Figure 1 As shown, one end face of the module shell 1 is connected to the wire outlet 2, and the wire outlet 2 is fixedly connected to the module shell 1. The wire outlet 2 is used to connect the line and convert the signal of the pressure sensing module into an electrical signal for transmission.

[0020] like Figure 1 As shown, the lower end surface of the module shell 1 is connected to the shell 3, and the shell 3 is fixedly connected to the module shell 1. The shell 3 is used to protect the internal structure.

[0021] like Figure 1 As shown, the lower end surface of the shell 3 is connected to the flat membrane pressure inlet head 4, the flat membrane pressure inlet head 4 is fixedly connected to the shell 3, the lower side of the flat membrane pressure inlet head 4 is connected to the diaphragm 5, and the diaphragm 5 is openly connected to the flat membrane pressure inlet head 4, which can effectively prevent blockage.

[0022] In specific use, first connect the outlet head 2 to the circuit, then place the flat membrane pressure head 4 of the device into the fluid, so that the grinding plate 5 is in contact with the fluid, and then start the device so that the fluid flows through the shell 3. The pressure sensing module measures and then converts it into an electrical signal and projects it onto other devices through the circuit for display.

[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A flat membrane pressure sensor, characterized in that: The invention comprises a module shell (1), a flat membrane pressure inlet head (4) and a diaphragm (5); a pressure sensing module is arranged inside the module shell (1); the pressure sensing module is fixedly connected to the module shell (1); a shell (3) is arranged at the lower end surface of the module shell (1); the lower end surface of the shell (3) is connected to the flat membrane pressure inlet head (4); the flat membrane pressure inlet head (4) is fixedly connected to the shell (3); the lower part of the flat membrane pressure inlet head (4) is connected to the diaphragm (5); the diaphragm (5) is openly connected to the flat membrane pressure inlet head (4), which can effectively prevent blockage.

2. A flat membrane pressure sensor according to claim 1, characterized in that: A wire outlet (2) is provided on one end face of the module shell (1), the wire outlet (2) is fixedly connected to the module shell (1), and the wire outlet (2) is used to connect a line to convert a signal of the pressure sensing module into an electrical signal for transmission.

3. A flat membrane pressure sensor according to claim 1, characterized in that: The housing (3) is fixedly connected to the module shell (1).

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