Pressure sensor structure

Abstract

The utility model relates to a pressure sensor structure comprising a connecting pipe, the connecting pipe is provided with a channel, the channel is provided with a first end contacted with fluid, and a second end of the channel extends into the connecting pipe and is fixedly provided with a sensor through a locking member; a layer of membrane is arranged between the locking component and the connecting pipe, the membrane is arranged at the second end of the channel in a surrounding mode and wraps and seals the outer side of the sensor, the sensor is locked and fixed through the locking component, and meanwhile the membrane is arranged between the locking component and the connecting pipe. And the outer side of the sensor is wrapped and sealed through the diaphragm, so that the sealing performance of the sensor is improved, the locking force between the locking component and the connecting pipe is increased, and the locking effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure sensor field, more specifically, the utility model further relates to a pressure sensor structure. BACKGROUND

[0002] Pressure sensor is the device or device that can feel pressure signal and can according to certain rule convert pressure signal into usable output electric signal.

[0003] Sensor is the core component of pressure sensor, is responsible for converting external pressure signal into electric signal, has high sensitivity, high accuracy and long-term stability, but the existing pressure sensor will appear unstable phenomenon after long time use, and fluid leakage phenomenon will appear simultaneously, thereby leading to pressure sensor data deviation, measurement result inaccuracy phenomenon. UTILITY MODEL CONTENT

[0004] In order to realize the purpose of the utility model, the technical scheme that the utility model adopts is as follows: a pressure sensor structure, comprising: connecting pipe, the connecting pipe is equipped with a passageway, the passageway is equipped with the first end in contact with fluid, the passageway second end extends to the sensor fixedly arranged in the connecting pipe through locking member;

[0005] A layer of diaphragm is arranged between the locking member and the connecting pipe, and the diaphragm is arranged around the second end of the passageway and seals the outside of the sensor.

[0006] Preferably, the locking member is connected with a display screen through an isolation column, and a circuit board is fixedly arranged between the locking member and the display screen, an outer shell is connected between the display screen and the connecting pipe, and the outer shell, the display screen and the connecting pipe form a sealed cavity for placing the sensor and the circuit board.

[0007] Preferably, the display screen and the outer shell are sealed by a first sealing ring at the connection.

[0008] Preferably, the outer shell and the connecting pipe are sealed by a second sealing ring at the connection.

[0009] Preferably, two circuit boards are arranged in the sealed cavity, and an isolation space is formed between the two circuit boards and the circuit board and the locking member driven by the isolation column.

[0010] Preferably, one end of a circuit board connecting wire joint is connected, and the other end of the wire joint extends to the outside of the outer shell and is connected with an external power supply and a communication interface.

[0011] Preferably, a third sealing ring is arranged below the diaphragm, and the third sealing ring is arranged between the sensor and the connecting pipe.

[0012] Preferably, the locking member adopts a compression nut.

[0013] Compared with the prior art, the pressure sensor structure has the beneficial effects that:

[0014] 1. The sensor is locked and fixed by the locking member, a diaphragm is arranged between the locking member and the connecting pipe, and the outer side of the sensor is wrapped and sealed by the diaphragm, so that the sealing property of the sensor is improved, the locking force between the locking member and the connecting pipe is increased, and the locking effect is improved.

[0015] 2. The first sealing ring, the second sealing ring and the third sealing ring improve the overall sealing effect of the pressure sensor, reduce the fluid leakage phenomenon, and improve the accuracy of the measurement result.

[0016] 3. The isolation column drives the circuit board and forms an isolation space between the circuit board and the locking member, so that the isolation column supports and fixes the circuit board, and prevents short circuit and interference. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a sectional view of the overall structure of the pressure sensor structure of the utility model;

[0018] Figure 2 is an enlarged view of the structure at A of the pressure sensor structure of the utility model;

[0019] Figure 3 is an enlarged view of the structure at B of the pressure sensor structure of the utility model;

[0020] Figure 4 is an enlarged view of the structure at C of the pressure sensor structure of the utility model;

[0021] Figure 5 is an exploded view of the overall structure of the pressure sensor structure of the utility model.

[0022] In the figure: 1, connecting pipe; 101, passage; 2, locking member; 3, sensor; 4, diaphragm; 5, display screen; 6, circuit board; 7, shell; 8, first sealing ring; 9, second sealing ring; 10, wire joint; 11, third sealing ring; 12, isolation column. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, any person skilled in the art who does not make any creative effort can also belong to the scope of protection of the utility model.

[0024] Figure 1 As Figure 3As shown, the utility model provides a technical scheme: a pressure sensor structure, include: connecting pipe 1, connecting pipe 1 is the bridge between sensor 3 and fluid pressure, keep stable pressure transmission, connecting pipe 1 is equipped with a passageway 101, passageway 101 is equipped with the first end with fluid contact, passageway 101 second end extends to the sensor 3 fixedly arranged in connecting pipe 1 through locking member 2. Locking member 2 adopts compression nut. Compression nut ensures stable connection and sealing during long-term use.

[0025] Locking member 2 is connected with display screen 5 through isolation column 12, display screen 5 is used to show the measurement result of pressure sensor 3, locking member 2 and display screen 5 are fixedly provided with circuit board 6, display screen 5 is connected with connecting pipe 1 and is provided with shell 7, shell 7 and display screen 5 and connecting pipe 1 form the airtight cavity for placing sensor 3 and circuit board 6 between them. Shell 7 has waterproof and dustproof functions, is used to prevent the interference and damage of external environment.

[0026] Two circuit boards 6 are arranged in the airtight cavity, and the isolation column 12 drives the two circuit boards 6 and forms an isolation space between the circuit board 6 and the locking member 2. The circuit board 6 serves as the control center of the pressure sensor 3, is responsible for receiving the electrical signal output by the sensor 3, amplifying, filtering and digitizing, and finally displaying the processed data on the display screen 5.

[0027] The isolation column 12 drives the circuit board 6 and forms an isolation space between the circuit board 6 and the locking member 2, thereby supporting and fixing the circuit board 6 by the isolation column 12, preventing short circuit and interference.

[0028] The circuit board 6 is connected to the wire connector 10 at one end, and the other end of the wire connector 10 extends to the outside of the shell 7 and is connected to an external power supply and a communication interface.

[0029] A diaphragm 4 is arranged between the locking member 2 and the connecting pipe 1, and the diaphragm 4 is arranged around the second end of the passageway 101 and seals the outside of the sensor 3. This improves the sealing of the sensor 3 and increases the locking force between the locking member 2 and the connecting pipe 1, improving the locking effect.

[0030] Detail one: the connection between the display screen 5 and the shell 7 is sealed by a first sealing ring 8. The display screen 5 and the isolation column 12 are connected by three screws, and the isolation column 12 is connected to the compression nut at the bottom, forming a whole structure. The display screen 5 has a layer of sealing ring outside, which plays a role in tight isolation.

[0031] Detail two: there is a diaphragm 4 between the sensor 3 and the connecting pipe 1, and the diaphragm 4 is waterproof. A third sealing ring 11 is arranged below the diaphragm 4, and the third sealing ring 11 is arranged between the sensor 3 and the connecting pipe 1 to ensure tight connection.

[0032] Detail three: the connecting pipe 1 and the shell 7 are connected through the second sealing ring 9, and are tightly combined with the shell 7, are pressed from top to bottom, form a sealed whole, and guarantee the firmness of the connection.

[0033] The embodiments of the utility model discloses the preferable embodiment, but is not limited to this, and the ordinary skilled person in the art, the spirit of the utility model is appreciated to the above-mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.

Claims

1. A pressure sensor structure, characterized by The utility model relates to a kind of sensor connection pipe and display screen, including: Connecting pipe, the connecting pipe is equipped with a passage, the passage is equipped with the first end with fluid contact, the passage second end extends to the sensor fixedly arranged in connecting pipe by locking member; The locking member is equipped with a layer of diaphragm between the connecting pipe, the diaphragm is arranged around the second end of passage and is sealed to the outside of sensor.

2. The pressure sensor structure of claim 1, wherein, The locking member is connected with display screen by isolation column, the locking member is fixedly arranged with circuit board between display screen, and the display screen is connected with the shell between connecting pipe, and the shell is formed with the closed cavity for placing sensor and circuit board between display screen and connecting pipe.

3. The pressure sensor structure of claim 2, wherein, The display screen is sealed by first sealing ring at the junction with shell.

4. The pressure sensor structure of claim 2, wherein, The shell is sealed by second sealing ring at the junction with connecting pipe.

5. The pressure sensor structure of claim 2, wherein, Two circuit boards are arranged in the closed cavity, and the isolation column drives two circuit boards and forms isolation space between circuit board and locking member.

6. The pressure sensor structure of claim 2, wherein, The circuit board connection wire connector one end, the wire connector other end extends to the outside of shell and is connected with external power supply and communication interface.

7. The pressure sensor structure of claim 1, wherein, The diaphragm is provided with third sealing ring below, and the third sealing ring is arranged between sensor and connecting pipe.

8. The pressure sensor structure of claim 1, wherein, The locking member adopts compression nut.

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