CN220356570U

CN220356570U - Pressure sensor

Info

Publication number: CN220356570U
Application number: CN202322062193.0U
Authority: CN
Inventors: 程立; 秦根华; 黄小虎; 范新军; 马业存
Original assignee: Anhui Weil Low Carbon Technology Co ltd
Current assignee: Anhui Weil Low Carbon Technology Co ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2024-01-16
Anticipated expiration: 2033-08-02

Abstract

The utility model relates to the technical field of pressure sensors, and discloses a pressure sensor, which comprises an aluminum sensor shell, wherein a connector is arranged at the top of the outer side of the aluminum sensor shell, a connector terminal is arranged in the connector, a pressure core body is arranged at the inner bottom of the aluminum sensor shell, and the pressure sensor further comprises: the support ring is connected to the inside of the aluminum sensor shell, and the scarf joint grooves are formed in two sides of the side face of the support ring.

Description

Pressure sensor

Technical Field

The utility model relates to the technical field of pressure sensors, in particular to a pressure sensor.

Background

A pressure sensor is a device or apparatus that senses a pressure signal and converts the pressure signal to a usable output electrical signal according to a certain law. Pressure sensors are generally composed of a pressure sensitive element and a signal processing unit. Pressure sensors can be classified into gauge pressure sensors, differential pressure sensors, and absolute pressure sensors, according to the type of test pressure. The pressure sensor is the most commonly used sensor in industrial practice, is widely applied to various industrial self-control environments, and relates to various industries such as water conservancy and hydropower, railway traffic, intelligent building, production self-control, aerospace, military industry, petrochemical industry, oil well, electric power, ships, machine tools, pipelines and the like.

Because of the diversity of the use working conditions of the pressure sensor, static electricity can be generated when certain working condition media flow in the pipeline and can be accumulated on the shell of the pressure sensor, if the static electricity can not be released in time, the static electricity can be accumulated on the shell of the pressure sensor, and the static electricity can be discharged randomly, so that electronic components in the sensor are extremely damaged.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a pressure sensor.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a pressure sensor, includes aluminium system sensor housing, and the top in aluminium system sensor housing outside is provided with the connector, and the inside of connector is provided with the connector terminal, and the inner bottom of aluminium system sensor housing is provided with the pressure core, pressure sensor still includes:

the support ring is connected to the inside of the aluminum sensor shell, and the two sides of the side surface of the support ring are provided with scarf grooves;

the PCB is connected to the upper end face of the supporting ring, two sides of the side face of the PCB are provided with PCB edge bosses, the PCB edge bosses are arranged in the embedded grooves, and the upper end face of the PCB edge bosses is provided with conductive circuits;

the aluminum compression ring is connected to the edge position of the surface of the PCB; and

the first PCB connecting soft board and the second PCB connecting soft board are respectively connected to the upper side and the lower side of the PCB board.

As still further aspects of the utility model: the conductive circuit is electrically connected with the connector terminal through the first PCB connecting soft board, and the PCB is electrically connected with the pressure core through the second PCB connecting soft board.

As still further aspects of the utility model: the outside of aluminium pressing ring closely laminates with the inner wall of aluminium system sensor casing.

As still further aspects of the utility model: the junction of aluminium system sensor casing and pressure core is provided with first sealing washer, and aluminium system sensor casing passes through first sealing washer sealing connection with the pressure core.

As still further aspects of the utility model: the second sealing ring is arranged at the joint of the connector and the aluminum sensor shell, and the connector is in sealing connection with the aluminum sensor shell through the second sealing ring.

As still further aspects of the utility model: the bottom of the outer side of the aluminum sensor shell is provided with a liquid hammer preventing small hole.

As still further aspects of the utility model: the inner diameter of the liquid hammer preventing small hole is smaller than mm.

The utility model has the following beneficial effects:

1. through setting up aluminium system clamping ring, supporting ring, PCB board edge boss, scarf joint recess and first PCB connection soft board, can make aluminium system sensor housing self and connector terminal ground altogether to when aluminium system sensor housing self gathering more static, can in time release static.

2. Through setting up the liquid hammer aperture of preventing at aluminium system sensor housing lower surface eccentric position, the liquid hammer pressure that can cushion liquid medium to bring directly strikes the most sensitive central point of pressure core, effectively protects the pressure core not damaged to this pressure sensor's practicality has been improved.

Drawings

FIG. 1 is a schematic diagram of a pressure sensor according to the present utility model;

FIG. 2 is a schematic perspective view of an aluminum sensor housing and connector for a pressure sensor according to the present utility model;

fig. 3 is a schematic perspective view of a support ring, a PCB board and an aluminum compression ring of the pressure sensor according to the present utility model;

fig. 4 is a schematic diagram of a partial structure of a top surface of an aluminum sensor housing, a support ring, a PCB board and a conductive circuit of a pressure sensor according to the present utility model.

In the figure: 1. an aluminum sensor housing; 2. a first seal ring; 3. a second seal ring; 4. a connector; 5. a connector terminal; 6. the first PCB is connected with the soft board; 7. an aluminum compression ring; 8. a PCB board; 9. a support ring; 10. the second PCB is connected with the soft board; 11. a pressure core; 12. a liquid hammer preventing small hole; 13. PCB board edge boss; 14. the groove is embedded; 15. and a conductive circuit.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.

Referring to fig. 1 to 4, a pressure sensor, including an aluminum sensor housing 1, and a connector 4 is provided at the top of the outside of the aluminum sensor housing 1, a connector terminal 5 is provided inside the connector 4, and the connector 4 and the connector terminal 5 are integrated, a pressure core 11 is provided at the inner bottom of the aluminum sensor housing 1, the connector 4 is an insulating member, and the connector terminal 5 provided inside thereof and a system to be tested are connected to each other by a wire harness, and the preferred connector 4 is press-riveted with the aluminum sensor housing 1 to constitute a sensor external structure, the pressure sensor further includes:

the support ring 9 is connected to the inside of the aluminum sensor shell 1, the two sides of the side surface of the support ring 9 are respectively provided with an embedding groove 14, the support ring 9 is preferably made of an insulating material, the lower end surface of the support ring 9 is propped against the outer side of the pressure core 11, namely the pressure core 11 is limited in the inside of the aluminum sensor shell 1 through the support ring 9;

the PCB 8 is connected to the upper end face of the supporting ring 9, the PCB 8 is a sensor control circuit board, two sides of the side face of the PCB 8 are provided with PCB edge bosses 13, the PCB edge bosses 13 are arranged in the embedded grooves 14, the PCB edge bosses 13 are matched with the embedded grooves 14 in shape, and the upper end face of the PCB edge bosses 13 is provided with conductive circuits 15;

the aluminum pressing ring 7 is connected to the edge position of the surface of the PCB 8, and the lower end surface of the aluminum pressing ring 7 is tightly attached to the conductive circuit 15 on the PCB edge boss 13 arranged on the PCB 8; and

the first PCB connecting flexible board 6 and the second PCB connecting flexible board 10 are respectively connected to the upper and lower sides of the PCB 8, the conductive circuit 15 is electrically connected with the connector terminal 5 through the first PCB connecting flexible board 6, and the PCB 8 is electrically connected with the pressure core 11 through the second PCB connecting flexible board 10.

In the above technical solution, the manner of connecting the conductive circuit 15 on the PCB edge boss 13 with the connector terminal 5 through the first PCB connection flexible board 6 is adopted, so that the aluminum sensor housing 1 and the connector terminal 5 can be grounded together, and when the aluminum sensor housing 1 gathers more static electricity, the static electricity can be released in time.

In this embodiment, the outer side of the aluminum pressing ring 7 is tightly attached to the inner wall of the aluminum sensor housing 1, that is, the aluminum pressing ring 7 is in interference connection with the aluminum sensor housing 1, so as to ensure that the connection between the aluminum pressing ring 7 and the PCB 8 is compact enough.

In this embodiment, the junction of aluminium system sensor housing 1 and pressure core 11 is provided with first sealing washer 2, and aluminium system sensor housing 1 and pressure core 11 pass through first sealing washer 2 sealing connection, the junction of connector 4 and aluminium system sensor housing 1 is provided with second sealing washer 3, and connector 4 and aluminium system sensor housing 1 pass through second sealing washer 3 sealing connection, through first sealing washer 2 and second sealing washer 3, the leakproofness of being connected between aluminium system sensor housing 1 and pressure core 11 and second sealing washer 3 and connector 4 can be very big degree to guarantee this pressure sensor's stability degree in the use.

Based on the research extension of the technical scheme, the application also makes the following optimal design: the bottom of the outer side of the aluminum sensor shell 1 is provided with a liquid hammer preventing small hole 12, the inner diameter of the liquid hammer preventing small hole 12 is smaller than 1mm, and the liquid hammer preventing small hole 12 is preferably arranged at an eccentric position of the surface of the aluminum sensor shell 1 away from the center of the shell;

when the liquid medium flows on the aluminum sensor shell 1, the liquid hammer phenomenon is that the liquid is blocked suddenly after flowing, the liquid at the back has a certain kinetic energy, the kinetic energy is released suddenly to generate impact, and when the liquid hammer phenomenon is encountered in the use process of the sensor, the core inside the sensor is very easy to damage, in the application, the liquid hammer preventing small holes 12 are arranged at the eccentric position of the lower surface of the aluminum sensor shell 1, the most sensitive central position of the pressure core can be directly impacted by the liquid hammer pressure brought by the liquid medium, the pressure core is effectively protected from being damaged, and the practicability of the pressure sensor is improved.

The working process of the pressure sensor comprises the following steps: the pressure of the system to be tested is transmitted to the pressure core 11 through the liquid hammer preventing small hole 12 at the bottom end of the aluminum sensor shell 1, the pressure core 11 converts a pressure signal into a voltage signal, the voltage signal is processed through the control circuit of the PCB 8, and the voltage signal is output to the connector 4 level signal or the switch signal according to the requirement.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a pressure sensor, includes aluminium system sensor housing (1), and the top in aluminium system sensor housing (1) outside is provided with connector (4), and the inside of connector (4) is provided with connector terminal (5), and the interior bottom of aluminium system sensor housing (1) is provided with pressure core (11), its characterized in that, pressure sensor still includes:

the support ring (9) is connected to the inside of the aluminum sensor shell (1), and the two sides of the side surface of the support ring (9) are provided with scarf grooves (14);

the PCB (8) is connected to the upper end face of the supporting ring (9), two sides of the side face of the PCB (8) are provided with PCB edge bosses (13), the PCB edge bosses (13) are arranged in the embedded grooves (14), and the upper end face of the PCB edge bosses (13) is provided with a conductive circuit (15);

the aluminum compression ring (7) is connected to the edge position of the surface of the PCB (8); and

the first PCB connecting soft board (6) and the second PCB connecting soft board (10) are respectively connected to the upper side and the lower side of the PCB (8).

2. A pressure sensor according to claim 1, characterized in that the conductive track (15) is electrically connected to the connector terminals (5) via a first PCB connecting flexible board (6), and the PCB board (8) is electrically connected to the pressure core (11) via a second PCB connecting flexible board (10).

3. A pressure sensor according to claim 1, characterized in that the outer side of the aluminium pressure ring (7) is in close contact with the inner wall of the aluminium sensor housing (1).

4. A pressure sensor according to claim 1, characterized in that the connection of the aluminium sensor housing (1) and the pressure core (11) is provided with a first sealing ring (2), and that the aluminium sensor housing (1) and the pressure core (11) are sealingly connected by means of the first sealing ring (2).

5. A pressure sensor according to claim 1, characterized in that the connection of the connector (4) to the aluminium sensor housing (1) is provided with a second sealing ring (3), and that the connector (4) is sealingly connected to the aluminium sensor housing (1) by means of the second sealing ring (3).

6. A pressure sensor according to claim 1, characterized in that the bottom of the outside of the aluminium sensor housing (1) is provided with a liquid hammer preventing aperture (12).

7. A pressure sensor according to claim 6, characterized in that the inner diameter of the liquid hammer preventing aperture (12) is smaller than 1mm.