CN212432401U

CN212432401U - Magnetorheological pressure sensing device based on wedge-shaped structure

Info

Publication number: CN212432401U
Application number: CN202021500386.XU
Authority: CN
Inventors: 周崇秋; 陈俊元; 贺新升; 高春甫; 张可; 林永久
Original assignee: Zhejiang Normal University CJNU
Current assignee: Zhejiang Normal University CJNU
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-01-29
Anticipated expiration: 2030-07-27

Abstract

The utility model relates to a magnetic current becomes pressure sensing device based on wedge structure, the device by shell, wedge awl, piston rod, polar plate, No. two polar plates, No. three polar plates, No. four polar plates, No. five polar plates, No. six polar plates, end cover, a spring, controller shell, controller, No. two springs, circular telegram wire, signal line, No. three elastomers, No. two elastomers, an elastomer, excitation coil, sealing washer constitute. The wedge-shaped cone is placed at the center of the inner part of the shell and is sealed by a sealing ring; the first polar plate, the third polar plate and the fifth polar plate are tightly attached to the side surface of the piston rod; the second pole plate, the fourth pole plate and the sixth pole plate are embedded in the shell and are arranged on the side surface of the piston rod; the first elastic body, the second elastic body and the third elastic body are respectively arranged at the concave part of the piston rod; the controller is arranged in the controller shell, and the output end of the controller is connected with a signal wire and a power-on wire; the second spring is placed at the bottom of the wedge-shaped cone.

Description

Magnetorheological pressure sensing device based on wedge-shaped structure

Technical Field

The invention relates to a pressure sensing device, in particular to a magnetorheological pressure sensing device based on a wedge-shaped structure.

Background

With the development of underwater detection technology, underwater pressure sensing devices are widely applied to submarines and underwater robots. However, as the underwater detection depth is deeper and deeper, the water pressure of the sea bottom exceeds the measurement range of a common pressure sensor, and an underwater pressure sensing device with a wider measurement range is urgently needed. Therefore, the invention designs the magneto-rheological pressure sensing device based on the wedge-shaped structure by combining the magnetic control rigidity variable property and the piezoresistive property of the magneto-rheological elastomer

Disclosure of Invention

The invention aims to provide a magnetorheological pressure sensing device based on a wedge-shaped structure, which can measure the pressure of the sea bottom and the change process of the seawater pressure.

In order to effectively solve the above problems, the present invention is implemented as follows: the device comprises a shell 1, a wedge-shaped cone 2, a piston rod 3, a first pole plate 4, a second pole plate 5, a third pole plate 6, a fourth pole plate 7, a fifth pole plate 8, a sixth pole plate 9, an end cover 10, a first spring 11, a controller shell 12, a controller 13, a second spring 14, an electrified lead 15, a signal wire 16, a third elastic body 17, a second elastic body 18, a first elastic body 19, an excitation coil 20 and a sealing ring 21. The wedge-shaped cone 2 is placed at the inner center of the shell 1 and sealed by a sealing ring 21; the piston rod 3 is horizontally arranged in the shell 1 and is tightly attached to the wedge-shaped cone 2; the first polar plate 4, the third polar plate 6 and the fifth polar plate 8 are tightly attached to the side surface of the piston rod 3; the second pole plate 5, the fourth pole plate 7 and the sixth pole plate 9 are embedded in the shell 1 and are arranged on the side surface of the piston rod 3; the first elastic body 19, the second elastic body 18 and the third elastic body 17 are respectively arranged at the concave part of the piston rod 3; the end cover 10 is in threaded connection with the shell 1; the first spring 11 is placed between the end cover 10 and the piston rod 3; the controller shell 12 is placed at the bottom of the shell 1 and is welded with the shell 1; the controller 13 is arranged in the controller shell 12, and the output end of the controller is connected with a signal wire 16 and an electrified conducting wire 15; the second spring 14 is placed at the bottom of the wedge-shaped cone 2; the exciting coil 20 is wound inside the piston rod 3.

The inner part and the surface of the shell 1 are both subjected to insulation treatment.

The first polar plate 4, the second polar plate 5, the third polar plate 6, the fourth polar plate 7, the fifth polar plate 8 and the sixth polar plate 9 are all made of copper.

The first elastomer 19, the second elastomer 18 and the third elastomer 17 are all pre-structured magnetorheological elastomers.

And the surface of the piston rod 3 is subjected to insulation treatment.

The magneto-rheological pressure sensing device based on the wedge-shaped structure has the advantages that: the pressure is characterized by measuring the piezoresistive value of the pre-structured magneto-rheological elastomer, and the measured piezoresistive average value is taken, so that the measured data is more accurate; because there are four measurement orientations, the seawater pressure is divided into four parts equally, and the pressure characterization range can be enlarged, so that the seawater pressure at a deeper position can be measured.

Drawings

FIG. 1 is a top view of a magnetorheological pressure sensing device based on a wedge structure.

FIG. 2 is a schematic diagram of an internal structure of a magnetorheological pressure sensing device based on a wedge structure.

In the figure: 1. the novel electric switch comprises a shell, 2. a wedge-shaped cone, 3. a piston rod, 4. a first pole plate, 5. a second pole plate, 6. a third pole plate, 7. a fourth pole plate, 8. a fifth pole plate, 9. a sixth pole plate, 10. an end cover, 11. a first spring, 12. a controller shell, 13. a controller, 14. a second spring, 15. a power-on lead, 16. a signal wire, 17. a third elastic body, 18. a second elastic body, 19. a first elastic body, 20. an excitation coil and 21. a sealing ring.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In fig. 2, the magnetorheological pressure sensing device based on the wedge-shaped structure of the invention is composed of a shell 1, a wedge-shaped cone 2, a piston rod 3, a first pole plate 4, a second pole plate 5, a third pole plate 6, a fourth pole plate 7, a fifth pole plate 8, a sixth pole plate 9, an end cover 10, a first spring 11, a controller shell 12, a controller 13, a second spring 14, an electrified lead 15, a signal wire 16, a third elastic body 17, a second elastic body 18, a first elastic body 19, an excitation coil 20 and a sealing ring 21. The wedge-shaped cone 2 is placed at the inner center of the shell 1 and sealed by a sealing ring 21; the piston rod 3 is horizontally arranged in the shell 1 and is tightly attached to the wedge-shaped cone 2; the first polar plate 4, the third polar plate 6 and the fifth polar plate 8 are tightly attached to the side surface of the piston rod 3; the second pole plate 5, the fourth pole plate 7 and the sixth pole plate 9 are embedded in the shell 1 and are arranged on the side surface of the piston rod 3; the first elastic body 19, the second elastic body 18 and the third elastic body 17 are respectively arranged at the concave part of the piston rod 3; the end cover 10 is in threaded connection with the shell 1; the first spring 11 is placed between the end cover 10 and the piston rod 3; the controller shell 12 is placed at the bottom of the shell 1 and is welded with the shell 1; the controller 13 is arranged in the controller shell 12, and the output end of the controller is connected with a signal wire 16 and an electrified conducting wire 15; the second spring 14 is placed at the bottom of the wedge-shaped cone 2; the exciting coil 20 is wound inside the piston rod 3.

And the surface of the piston rod 3 is subjected to insulation treatment.

The working principle of the magnetorheological pressure sensing device based on the wedge-shaped structure is as follows: when seawater enters from the top of the shell 1, the wedge-shaped cone 2 moves downwards due to pressure intensity to extrude the piston rods 3 around to move towards the horizontal direction, at the moment, the controller 13 outputs current to the electrified lead 15, the magnet exciting coil 20 connected with the electrified lead 15 generates a magnetic field, the magnetic field changes, and the rigidity of the first elastic body 19, the second elastic body 18 and the third elastic body 17 changes, so that the pressure of the seawater is balanced. The mean values of the piezoresistances between the first pole plate 4 and the second pole plate 5, between the third pole plate 6 and the fourth pole plate 7, and between the fifth pole plate 8 and the sixth pole plate 9 in a single direction are measured through a signal line 16, the mean values of the piezoresistances in the four directions are taken in combination with the mean values of the piezoresistances in the other three aspects, and finally the seawater pressure is calibrated.

Claims

1. A magnetorheological pressure sensing device based on a wedge-shaped structure is characterized in that: the device comprises a shell (1), a wedge-shaped cone (2), a piston rod (3), a first pole plate (4), a second pole plate (5), a third pole plate (6), a fourth pole plate (7), a fifth pole plate (8), a sixth pole plate (9), an end cover (10), a first spring (11), a controller shell (12), a controller (13), a second spring (14), an electrified lead (15), a signal wire (16), a third elastic body (17), a second elastic body (18), a first elastic body (19), a magnet exciting coil (20) and a sealing ring (21); the wedge-shaped cone (2) is placed at the center of the inner part of the shell (1) and is sealed by a sealing ring (21); the piston rod (3) is horizontally arranged in the shell (1) and is tightly attached to the wedge-shaped cone (2); the first polar plate (4), the third polar plate (6) and the fifth polar plate (8) are tightly attached to the side surface of the piston rod (3); the second pole plate (5), the fourth pole plate (7) and the sixth pole plate (9) are embedded in the shell (1) and are arranged on the side face of the piston rod (3); the first elastic body (19), the second elastic body (18) and the third elastic body (17) are respectively arranged at the concave part of the piston rod (3); the end cover (10) is in threaded connection with the shell (1); the first spring (11) is arranged between the end cover (10) and the piston rod (3); the controller shell (12) is placed at the bottom of the shell (1) and is welded with the shell (1); the controller (13) is arranged in the controller shell (12), and the output end of the controller is connected with a signal wire (16) and an electrified lead (15); the second spring (14) is placed at the bottom of the wedge-shaped cone (2); the excitation coil (20) is wound inside the piston rod (3).

2. The magnetorheological pressure sensing device based on the wedge structure according to claim 1, wherein: the inner part and the surface of the shell (1) are subjected to insulation treatment.

3. The magnetorheological pressure sensing device based on the wedge structure according to claim 1, wherein: the first pole plate (4), the second pole plate (5), the third pole plate (6), the fourth pole plate (7), the fifth pole plate (8) and the sixth pole plate (9) are all made of copper.

4. The magnetorheological pressure sensing device based on the wedge structure according to claim 1, wherein: the first elastomer (19), the second elastomer (18) and the third elastomer (17) are all pre-structured magnetorheological elastomers.

5. The magnetorheological pressure sensing device based on the wedge structure according to claim 1, wherein: the surface of the piston rod (3) is subjected to insulation treatment.