Small-size one-piece cable type triaxial watertight acceleration sensor

Abstract

The utility model belongs to the technical field of acceleration sensors, and particularly relates to a small-size conjoined cable type triaxial watertight acceleration sensor, which comprises a shell 1, a cover plate a2, an inner shell cover a3, a circuit a4, a core a5, an inner base a6, an insulating base a7, a base 8, a cover plate b9, an inner shell cover b10, an inner base b11, a core b12, an insulating base b13, a circuit b14, a cover plate c15, an inner shell cover c16, a circuit c17 and a core c18. The sensor is specially designed for the underwater environment, the water tightness is better, the sensor is of an integrated cable design, various measuring ranges can be selected, different requirements are met, the outer shell and the connecting nozzle are both made of TA1 titanium alloy and can tolerate high water pressure, the water pressure resistance of the sensor can reach 3 MPa, the structure of the sensor is a three-axis structure, the sensor is different from a traditional single-axis sensor, X-direction vibration, Y-direction vibration and Z-direction vibration are measured respectively, and the measurement precision is high. The outer diameter of the finished sensor is only phi 36 which is far smaller than the outer diameter of the existing sensor, the thickness is only phi 20, the weight is lighter, and the sensor is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to acceleration sensor technical field especially relates to a small size three -dimensional water -resistant acceleration sensor of cable type. BACKGROUND

[0002] Acceleration sensor is a kind of acceleration information that can be received measured and is converted into electric signal or other required form information output according to certain law, is usually used as the health state of detection equipment, especially some equipment working in special environment, such as high temperature, strong water pressure environment etc.Acceleration sensor is usually composed of mass block, center column, piezoelectric material (sensitive element), fastener, fixing piece, (circuit), base, shell, joint etc.According to the difference of sensitive element, acceleration sensor is usually divided into piezoelectric type, piezoresistance type, capacitance type, inductance type, strain type etc.Three -dimensional acceleration sensor can measure acceleration of three different directions in space simultaneously, compared with single -axis and double -axis acceleration sensor, it has high integration, light weight, small volume, measurement is more accurate and comprehensive, therefore, it is favored in actual complex application.

[0003] In prior art, water -resistant acceleration sensor is mostly single -axis or double -axis acceleration sensor, cannot meet the needs of three -dimensional measurement.Acceleration is space vector, in order to understand the motion property of measured equipment accurately and comprehensively, the component on three coordinate axes must be measured, three -dimensional acceleration sensor can only be applied to detect its acceleration signal.In addition, three -dimensional acceleration sensor is also based on gravity principle, therefore, double -axis positive and negative 90 degrees or double -axis 0-360 degrees inclination can be realized by three -dimensional acceleration sensor, and the accuracy after correction is higher than double -axis acceleration sensor greater than the measurement angle of 60 degrees, three -dimensional acceleration sensor can more comprehensively and accurately reflect the motion property of measured object while possessing the measurement characteristics of single -axis and double -axis sensor, to this end, we provide a small size three -dimensional water -resistant acceleration sensor of cable type for solving the above problems. Utility model content

[0004] In view of the deficiency of prior art, the utility model provides a small size special integrated cable type water -resistant three -dimensional acceleration sensor, is designed for underwater test environment, measures X axis, Y axis, Z axis axial acceleration simultaneously, and the finished product outer diameter of sensor is only φ36, saves space, and the thickness is only φ20, and the weight is light, integrated cable design, moisture -resistant and corrosion -resistant after vulcanization treatment, and the water pressure resistance can reach 3Mpa.

[0005] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0006] A small size connected cable type three-axis water-tight acceleration sensor, comprising: a shell 1, a cover plate a2, an inner shell cover a3, a circuit a4, a core body a5, an inner base a6, an insulating base a7, a base 8, a cover plate b9, an inner shell cover b10, an inner base b11, a core body b12, an insulating base b13, a circuit b14, a cover plate c15, an inner shell cover c16, a circuit c17, a core body c18, an inner base c19, an insulating base c20, a sealing seat 21, a cable shell 22, glue 23, a cable 24 and a cable external sealing 25 are provided.

[0007] The shell 1 is provided with a hole b27 at the right end, and the hole b27 is matched and installed with the cable shell 22, and the sealing seat 21 is installed in the hole b27.

[0008] The top of the inner base a6, the inner base b11 and the inner base c19 is provided with a prism circular column a28, the bottom of the inner base a6, the inner base b11 and the inner base c19 is provided with a prism circular column b29, and a plurality of prism circular columns b29 are installed on the insulating base a7, the insulating base b13 and the insulating base c20 respectively, and the top of the inner base a6, the inner base b11 and the inner base c19 is fixedly installed with the core body a5, the core body b12 and the core body c18 respectively.

[0009] The surface of the inner shell cover a3, the inner shell cover b10 and the inner shell cover c16 is provided with a plurality of holes c30.

[0010] The cable shell 22 is provided with a through hole in the inside.

[0011] The base 8 is provided with a concentric hole a26.

[0012] As a preferred scheme of the utility model, the material of the shell 1, the cover plate a2, the cover plate b9, the cover plate c15, the inner shell cover a3, the inner shell cover b10, the inner shell cover c16, the inner base a6, the inner base b11, the inner base c19, the base 8, the sealing seat 21, the cable shell 22, the prism circular column a28 and the prism circular column b29 is TA1 titanium alloy. Advantages

[0013] 1, the sensor is designed for underwater environment, better sealing, glass sealing seat sealing, realizing water-tight sealing function;

[0014] 2、The sensor is a three-axis structure, different from the traditional single-axis sensor, respectively measures X-direction, Y-direction and Z-direction vibration, saves space, the finished product outer diameter of the sensor is only φ36, far less than the existing sensor outer diameter size, the thickness is only φ11, and the weight is lighter, and the use is more convenient;

[0015] 3、The sensor shell and the connecting nozzle are made of TA1 titanium alloy, can resist strong water pressure, and the water pressure resistance of the sensor can reach 3MPa;

[0016] 4、The sensor is stable and reliable, and the frequency response characteristic is high;

[0017] 5、The sensor is an integral cable design, various ranges can be selected, and different requirements can be met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a schematic view of the appearance of the utility model;

[0019] Fig. 2 is a sectional view of the internal structure of the utility model;

[0020] Fig. 3 is a sectional view of the shell structure of the utility model;

[0021] Fig. 4 is a schematic view of the appearance of the inner base of the utility model;

[0022] Fig. 5 is a sectional view of the structure of the inner shell cover of the utility model;

[0023] Fig. 6 is a schematic view of the structure of the inner shell cover of the utility model.

[0024] In the drawing: 1, shell; 2, cover plate a; 3, inner shell cover a; 4, circuit a; 5, core a; 6, inner base a, 7, insulating base a; 8, base; 9, cover plate b; 10, inner shell cover b; 11, inner base b; 12, core b; 13, insulating base b; 14, circuit b; 15, cover plate c; 16, inner shell cover c; 17, circuit c; 18, core c; 19, inner base c; 20, insulating base c; 21, sealing seat; 22, cable shell; 23, glue; 24, cable; 25, cable external sealing; 26, hole a; 27, hole b; 28, prismatic circular column a; 29, prismatic circular column b;

[0025] 30, hole c. DETAILED DESCRIPTION

[0026] 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.

[0027] EMBODIMENT

[0028] Referring to FIG. 1-6, a small size integrated cable type three-axis water-tight acceleration sensor, comprising: a shell 1, a cover plate a2, an inner shell cover a3, a circuit a4, a core body a5, an inner base a6, an insulating base a7, a base 8, a cover plate b9, an inner shell cover b10, an inner base b11, a core body b12, an insulating base b13, a circuit b14, a cover plate c15, an inner shell cover c16, a circuit c17, a core body c18, an inner base c19, an insulating base c20, a sealing seat 21, a cable shell 22, glue 23, a cable 24 and a cable external seal 25;

[0029] The shell 1 is provided with a hole b27 at the right end, and the hole b27 is matched and installed with the cable shell 22, the sealing seat 21 is installed in the hole b27, the sealing property of the inside of the sensor after the sensor is connected with the cable is guaranteed, and external laser welding is adopted;

[0030] The top of the inner base a6, the inner base b11 and the inner base c19 is provided with a prism circular column a28, the bottom of the inner base a6, the inner base b11 and the inner base c19 is provided with a prism circular column b29, a plurality of prism circular columns b29 are respectively installed on the insulating base a7, the insulating base b13 and the insulating base c20, and the top of the inner base a6, the inner base b11 and the inner base c19 is fixedly installed with the core body a5, the core body b12 and the core body c18 respectively;

[0031] The surface of the inner shell cover a3, the inner shell cover b10 and the inner shell cover c16 is provided with a plurality of holes c30, so that pre-tightening is facilitated;

[0032] The inside of the cable shell 22 is provided with a through hole, so that the cable 24 connected with the sensor core body can pass through, and the inside of the cable shell 22 and the shell 1 is coated with glue 23 for sealing after being connected;

[0033] The base 8 is provided with a concentric hole a26 for installation when the sensor is used;

[0034] The core body a5 is used for X-axis acceleration measurement, the core body b12 is used for Y-axis acceleration measurement, and the core body c18 is used for C-axis acceleration measurement.

[0035] As a preferred scheme of the utility model, the material of the shell 1, the cover plate a2, the cover plate b9, the cover plate c15, the inner shell cover a3, the inner shell cover b10, the inner shell cover c16, the inner base a6, the inner base b11, the inner base c19, the base 8, the sealing seat 21, the cable shell 22, the prism circular column a28 and the prism circular column b29 adopts TA1 titanium alloy, which has the characteristics of light weight, high toughness and high strength.

[0036] Through the above structure, by stripping the cable 24 one end of the core line connection core b12, through the right end hole b27 of the shell 1 and the cable shell with glue 23 bonding, the middle seal seat 21, the core a5 and the core c18 are threaded on the inner seat a6 and the inner seat c19, and the shell 1 is laser welded with the cable shell 22.

[0037] The above only describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A small size tri-axial water proof acceleration sensor in a cable form, characterized by, It includes: The shell (1), cover a (2), inner shell cover a (3), circuit a (4), core a (5), inner base a (6), insulating base a (7), base (8), cover b (9), inner shell cover b (10), inner base b (11), core b (12), insulating base b (13), circuit b (14), cover c (15), inner shell cover c (16), circuit c (17), core c (18), inner base c (19), insulating base c (20), sealing seat (21), cable shell (22), glue (23), cable (24) and cable external sealing (25); The shell (1) right end opening has hole b (27), and hole b (27) is installed with cable shell (22), and sealing seat (21) is installed in hole b (27); The top of the inner base a (6), inner base b (11) and inner base c (19) is installed with the prism cylinder a (28), the bottom of the inner base a (6), inner base b (11) and inner base c (19) is installed with the prism cylinder b (29), multiple prism cylinder b (29) is installed on the insulating base a (7), insulating base b (13) and insulating base c (20) respectively, the top of the inner base a (6), inner base b (11) and inner base c (19) is fixedly installed between core a (5), core b (12) and core c (18) respectively; The surface of the inner shell cover a (3), inner shell cover b (10) and inner shell cover c (16) is provided with a plurality of hole c (30); The inside of the cable shell (22) is provided with a through hole; The base (8) is provided with concentric hole a (26).

2. A small size triaxial water proof acceleration sensor of the type defined in claim 1, characterized in that, The shell (1), cover a (2), cover b (9), cover c (15), inner shell cover a (3), inner shell cover b (10), inner shell cover c (16), inner base a (6), inner base b (11), inner base c (19), base (8), sealing seat (21), cable shell (22), prism cylinder a (28) and prism cylinder b (29) The material of the shell (1), cover a (2), cover b (9), cover c (15), inner shell cover a (3), inner shell cover b (10), inner shell cover c (16), inner base a (6), inner base b (11), inner base c (19), base (8), sealing seat (21), cable shell (22), prism cylinder a (28) and prism cylinder b (29) is TA1 titanium alloy.

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