Pressure sensor convenient to disassemble, assemble and maintain

Abstract

The utility model discloses a pressure sensor convenient to disassemble, assemble and maintain, relates to the technical field of pressure sensors, and aims to solve the problems that an internal structure and a shell of a conventional pressure sensor are inconvenient to disassemble, the maintenance operation is inconvenient, and the overall practicability needs to be improved. A first inner sleeve and a second inner sleeve are installed in the first shell, the first inner sleeve and the second inner sleeve are distributed in an involution mode, a piezoresistive structure is installed in the involution first inner sleeve and the involution second inner sleeve, the second inner sleeve is sleeved with a third shell, the third shell is in threaded connection with one end of the first shell, and the other end of the third shell is in threaded connection with the other end of the first shell. One end face of the third shell is provided with a detection port, and the detection end of the piezoresistive structure penetrates through the detection port. The effects that the internal structure and the shell can be conveniently disassembled, the internal structure of the pressure sensor can be conveniently overhauled and replaced, and practicability is high are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensors, in particular to a pressure sensor which is easy to disassemble, assemble and repair. Background Art

[0002] Pressure sensors are the most commonly used sensors in industrial practice. They are widely used in various industrial automatic control environments, involving many industries such as water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemicals, oil wells, electricity, ships, machine tools, pipelines, etc. As a data collection unit, it is a core component of automated management.

[0003] Existing pressure sensors are not easy to disassemble the internal structure and housing, and maintenance operations are inconvenient, and the overall practicality needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure sensor that is easy to disassemble and repair, and the internal structure and the shell can be easily disassembled, so that the internal structure of the pressure sensor can be easily repaired and replaced, and the utility model has high practicality.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A pressure sensor that is easy to disassemble and repair includes a first shell, a first inner sleeve and a second inner sleeve are installed inside the first shell, the first inner sleeve and the second inner sleeve are arranged in a matched manner, and a piezoresistive structure is installed inside the matched first and second inner sleeves, and a third shell is connected to the outside of the second inner sleeve, the third shell is threadedly connected to one end of the first shell, a detection port is provided on one end surface of the third shell, and the detection end of the piezoresistive structure passes through the detection port.

[0007] By adopting the above technical solution, disassembly and assembly can be conveniently performed, and the piezoresistive structure can be conveniently repaired and replaced, and the overall maintenance convenience is high.

[0008] Furthermore, a second shell is fixedly engaged with one end of the first shell, a circuit board is provided inside the second shell, and the first shell is communicated with the interior of the second shell.

[0009] By adopting the above technical solution, the installation operation is flexible and convenient.

[0010] Furthermore, the electrical connection ends of the circuit board and the piezoresistive structure are both provided with quick connectors that cooperate with each other.

[0011] By adopting the above technical solution, the circuit board and the piezoresistive structure can be electrically connected quickly and can also be disassembled quickly and conveniently.

[0012] Furthermore, an end cover is mounted on the upper port of the second shell, and one end of the end cover is pressed against an edge of the circuit board.

[0013] By adopting the above technical solution, the position stability of the circuit board can be improved.

[0014] Furthermore, the outside of the piezoresistive structure is wrapped with a thermal insulation sleeve, and the thermal insulation sleeve is located inside the matched first inner sleeve and the second inner sleeve.

[0015] By adopting the above technical solution, the influence of external temperature on the piezoresistive structure can be effectively reduced.

[0016] Furthermore, two rubber sealing rings are provided at the connection points of the first shell, the third shell, the first inner sleeve and the second inner sleeve.

[0017] By adopting the above technical solution, the sealing of the connection is ensured.

[0018] In summary, the beneficial technical effects of the present invention are:

[0019] 1. The utility model can first dismantle the second shell when a fault occurs, so that the second shell is separated from the first shell. Since the circuit board and the piezoresistive structure are connected by a quick connector, they can be easily disassembled to separate the circuit board and the piezoresistive structure. Then, the third shell is twisted. Since the third shell is threadedly connected to the first shell, the third shell can be easily disassembled. Then the first inner sleeve and the second inner sleeve can be easily pulled out. Since the first inner sleeve and the second inner sleeve are fitted and sleeved on the outside of the piezoresistive structure, the second inner sleeve can be easily disassembled. At this time, the piezoresistive structure can be easily repaired and replaced. When a circuit board fault occurs, the end cover can be removed, and then the circuit board can be taken out for inspection and replacement. The overall maintenance convenience is high and the practicality is strong.

[0020] 2. The utility model can effectively improve the stability of the position of the piezoresistive structure inside the first shell and the third shell by setting the first inner sleeve, the second inner sleeve and the thermal insulation sleeve, and at the same time reduce the influence of the external temperature on the piezoresistive structure, thereby further improving the practicality and improving the working stability of the pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is the internal structure diagram of the utility model;

[0023] Figure 3 For this utility model Figure 2 Enlarged view of point A.

[0024] In the figure: 1. First shell; 2. Second shell; 3. End cover; 4. Third shell; 5. Circuit board; 6. Quick connector; 7. First inner sleeve; 8. Second inner sleeve; 9. Rubber sealing ring; 10. Thermal insulation sleeve; 11. Piezoresistive structure. DETAILED DESCRIPTION

[0025] The method of the utility model is further described in detail below with reference to the accompanying drawings.

[0026] Reference Figure 1 、 Figure 2 、 Figure 3 , a pressure sensor that is easy to disassemble and repair, including a first shell 1, a first inner sleeve 7 and a second inner sleeve 8 are installed inside the first shell 1, the first inner sleeve 7 and the second inner sleeve 8 are distributed in pairs, and a piezoresistive structure 11 is installed inside the matched first inner sleeve 7 and the second inner sleeve 8, the outside of the second inner sleeve 8 is sleeved with a third shell 4, the third shell 4 is threadedly connected to one end of the first shell 1, a detection port is provided on one end surface of the third shell 4, the detection end of the piezoresistive structure 11 passes through the detection port, one end of the first shell 1 is clamped and fixed with the second shell 2, a circuit board 5 is provided inside the second shell 2, the first shell 1 is communicated with the interior of the second shell 2, the electrical connection ends of the circuit board 5 and the piezoresistive structure 11 are provided with mutually matching quick connectors 6, the upper port of the second shell 2 is clamped and installed with an end cover 3, one end of the end cover 3 abuts It is pressed on the edge of the circuit board 5, where the second shell 2 can be disassembled first when a fault occurs, so that the second shell 2 is separated from the first shell 1. Since the circuit board 5 and the piezoresistive structure 11 are connected by a quick connector 6, they can be easily disassembled, so that the circuit board 5 and the piezoresistive structure 11 are separated, and then the third shell 4 is twisted. Since the third shell 4 is threadedly connected to the first shell 1, the third shell 4 can be easily disassembled, and then the first inner sleeve 7 and the second inner sleeve 8 can be easily pulled out. Since the first inner sleeve 7 and the second inner sleeve 8 are fitted and sleeved on the outside of the piezoresistive structure 11, the second inner sleeve 8 can be easily disassembled. At this time, the piezoresistive structure 11 can be easily repaired and replaced. When the circuit board 5 fails, the end cover 3 can be removed, and then the circuit board 5 can be taken out for repair and replacement. The overall maintenance convenience is high and the practicality is strong.

[0027] Reference Figure 2 、 Figure 3 The outside of the piezoresistive structure 11 is wrapped with an insulating sleeve 10, which is located inside the first inner sleeve 7 and the second inner sleeve 8. Two rubber sealing rings 9 are provided at the connection between the first shell 1, the third shell 4, the first inner sleeve 7, and the second inner sleeve 8. The arrangement of the first inner sleeve 7, the second inner sleeve 8, and the insulating sleeve 10 can effectively improve the stability of the position of the piezoresistive structure 11 inside the first shell 1 and the third shell 4, and at the same time reduce the influence of the external temperature on the piezoresistive structure 11, thereby further improving the practicality and improving the working stability of the pressure sensor.

[0028] Working principle: When in use, one end of the third shell 4 can be threaded into the threaded hole of the external device. At this time, the piezoresistive structure 11 is in contact with the external medium and can effectively detect the pressure of the external medium. Since the outside of the piezoresistive structure 11 is wrapped with a thermal insulation sleeve 10, the influence of the external temperature on the piezoresistive structure 11 can be reduced. When the pressure sensor fails, first remove the second shell 2 to separate the second shell 2 from the first shell 1. Since the circuit board 5 and the piezoresistive structure 11 are connected by a quick connector 6, they can be easily disassembled to separate the circuit board 5 and the piezoresistive structure 11. Then, twist the third shell 4. Since the third shell 4 is threadedly connected to the first shell 1, the third shell 4 can be easily disassembled. Then, the first inner sleeve 7 and the second inner sleeve 8 can be easily pulled out. Since the first inner sleeve 7 and the second inner sleeve 8 are fitted and sleeved on the outside of the piezoresistive structure 11, the second inner sleeve 8 can be easily removed. At this time, the piezoresistive structure 11 can be easily repaired and replaced. When the circuit board 5 fails, the end cover 3 can be removed, and then the circuit board 5 can be taken out for repair and replacement. The overall maintenance convenience is high.

[0029] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A pressure sensor that is easy to disassemble and repair, comprising a first housing (1), characterized in that: A first inner sleeve (7) and a second inner sleeve (8) are installed inside the first shell (1), the first inner sleeve (7) and the second inner sleeve (8) are arranged in a matched manner, and a piezoresistive structure (11) is installed inside the matched first inner sleeve (7) and the second inner sleeve (8), and a third shell (4) is sleeved on the outside of the second inner sleeve (8), the third shell (4) is threadedly connected to one end of the first shell (1), a detection port is provided on one end face of the third shell (4), and the detection end of the piezoresistive structure (11) passes through the detection port.

2. The pressure sensor that is easy to disassemble and repair according to claim 1, characterized in that: One end of the first shell (1) is fixedly engaged with the second shell (2), a circuit board (5) is provided inside the second shell (2), and the first shell (1) and the second shell (2) are in communication with each other.

3. The pressure sensor that is easy to disassemble and repair according to claim 2, characterized in that: The electrical connection ends of the circuit board (5) and the piezoresistive structure (11) are both provided with quick connectors (6) that cooperate with each other.

4. The pressure sensor that is easy to disassemble and repair according to claim 2, characterized in that: An end cover (3) is mounted on the upper port of the second shell (2), and one end of the end cover (3) is pressed against the edge of the circuit board (5).

5. The pressure sensor that is easy to disassemble and repair according to claim 1, characterized in that: The outside of the piezoresistive structure (11) is wrapped with a heat-insulating sleeve (10), and the heat-insulating sleeve (10) is located inside the matched first inner sleeve (7) and second inner sleeve (8).

6. The pressure sensor that is easy to disassemble and repair according to claim 1, characterized in that: Two rubber sealing rings (9) are provided at the connection points of the first shell (1), the third shell (4), the first inner sleeve (7), and the second inner sleeve (8).

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