A fixed seal structure for a pressure sensor

Abstract

The utility model discloses a fixed sealing structure of pressure sensor, including binding post and pressure sensor board, pressure sensor board is located the top of binding post, and the fixed sealing between pressure sensor board and binding post is through sealing glue. The utility model discloses, fills into the surface of pressure sensor board with silicone sealant, and the pressure sensor board is covered, because the flowability of glue, and the glue is flowed into the bottom space of binding post through the gap of pressure sensor board, and the glue fills the gap between pressure sensor board and binding post, and forms an integral whole with binding post, after the solidification of glue, guarantees that gas can not leak through the gap, realizes the sealing.

Description

Technical Field

[0001] This utility model relates to the field of pressure sensor fixing technology, specifically a pressure sensor fixing and sealing structure. Background Technology

[0002] Pressure sensors are one of the most commonly used sensors in industrial practice. They are widely used in various industrial automation environments, including water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil wells, power, shipbuilding, machine tools, pipelines and many other industries.

[0003] A ceramic capacitive pressure sensor packaging structure disclosed in CN107219027B includes a housing and a capacitor, a signal conditioning circuit board, an insulating protective cover, and a shielding grounding plate disposed within the housing. The capacitor is mounted on the signal conditioning circuit board, and terminals are also mounted on the circuit board and connected to the capacitor. The signal conditioning circuit board also includes a grounding post and an output line capable of transmitting electrical signals, with the grounding post connected to the shielding grounding plate. The signal conditioning circuit board is housed within the insulating protective cover, and the shielding grounding plate is mounted on the insulating protective cover. This ceramic capacitive pressure sensor packaging structure, by incorporating an insulating protective cover and a shielding grounding plate at the signal conditioning circuit board, achieves insulation protection for the capacitor and the signal conditioning circuit board, making the sensor more convenient and reliable for grounding, while also shielding against interference and improving product quality.

[0004] There are many existing packaging components, and the sealing performance after packaging is relatively poor. Therefore, we propose a fixed sealing structure for pressure sensors. Utility Model Content

[0005] The purpose of this invention is to provide a fixed sealing structure for a pressure sensor to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixed sealing structure for a pressure sensor, comprising a terminal block and a pressure sensor plate, wherein the pressure sensor plate is located on top of the terminal block, and the pressure sensor plate and the terminal block are fixedly sealed by sealant.

[0007] Preferably, the pressure sensor plate has multiple notches on its edge, and the multiple notches are evenly distributed on the edge of the pressure sensor plate; the sealant is poured onto the surface of the pressure sensor plate to cover the pressure sensor plate, and the sealant flows into the bottom space of the terminal block through the notches, and the sealant fills the gap between the pressure sensor plate and the terminal block.

[0008] Preferably, there are 2-4 notches in total.

[0009] Preferably, it also includes a wire extending into the terminal block, and a base is provided on the outside of the terminal block.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the four wires of the terminal block are inserted into the holes of the sensor board and soldered. The silicone sealant is poured onto the surface of the pressure sensor board to cover it. Because the adhesive is fluid, it flows into the bottom space of the terminal block through the notch of the pressure sensor board. The adhesive fills the gap between the pressure sensor board and the terminal block, forming an integral part with the terminal block. After the adhesive cures, it ensures that gas cannot leak through the gap, thus achieving a seal. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure when the sealant of this utility model is removed;

[0014] Figure 3 This is a utility model Figure 2 The exploded diagram.

[0015] In the diagram: 1. Terminal block; 2. Sealant; 3. Pressure sensor board; 4. Notch; 5. Base; 6. Wire. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0017] Please see Figure 1-3 In this embodiment of the present invention, a fixed sealing structure for a pressure sensor includes a terminal block 1 and a pressure sensor plate 3. The pressure sensor plate 3 is located on top of the terminal block 1, and the pressure sensor plate 3 and the terminal block 1 are fixedly sealed by sealant 2.

[0018] The pressure sensor plate 3 has multiple notches 4 along its edge, with a total of 2-4 notches 4, preferably 2, evenly distributed along the edge of the pressure sensor plate 3. The sealant 2 is poured onto the surface of the pressure sensor plate 3, covering it, and flows through the notches 4 into the bottom space of the terminal block 1, filling the gap between the pressure sensor plate 3 and the terminal block 1. The four wires of the terminal block are inserted into the holes of the sensor plate and soldered. Silicone sealant is then poured onto the surface of the pressure sensor plate, covering it. Due to the fluidity of the sealant, it flows through the notches into the bottom space of the terminal block, filling the gap between the pressure sensor plate and the terminal block, forming a unified structure. After the sealant cures, it ensures that gas cannot leak through the gaps, achieving a seal.

[0019] The conductor 6 extends into the terminal 1, and a base 5 is provided on the outside of the terminal 1.

[0020] The working principle of this utility model is as follows: the four wires of the terminal block are inserted into the holes of the sensor board and soldered. The silicone sealant is poured onto the surface of the pressure sensor board to cover it. Because the sealant is fluid, it flows into the bottom space of the terminal block through the notch of the pressure sensor board. The sealant fills the gap between the pressure sensor board and the terminal block, forming an integral part with the terminal block. After the sealant cures, it ensures that gas cannot leak through the gap, thus achieving a seal.

[0021] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixed sealing structure for a pressure sensor, comprising a terminal block (1) and a pressure sensor plate (3), characterized in that: The pressure sensor plate (3) is located on top of the terminal block (1), and the pressure sensor plate (3) and the terminal block (1) are fixed and sealed by sealant (2).

2. The fixed sealing structure for a pressure sensor according to claim 1, characterized in that: The pressure sensor plate (3) has multiple notches (4) on its edge, and the multiple notches (4) are evenly distributed on the edge of the pressure sensor plate (3); the sealant (2) is poured onto the surface of the pressure sensor plate (3) to cover the pressure sensor plate (3), and the sealant (2) flows into the bottom space of the terminal (1) through the notches (4), and the sealant (2) fills the gap between the pressure sensor plate (3) and the terminal (1).

3. The fixed seal structure of a pressure sensor according to claim 2, characterized by: There are a total of 2-4 gaps (4).

4. The fixed seal structure of a pressure sensor according to claim 1, characterized by: It also includes a wire (6) that extends into the terminal (1) and a base (5) is provided on the outside of the terminal (1).

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