CN211783832U

CN211783832U - Optical fiber vibration sensor device

Info

Publication number: CN211783832U
Application number: CN202020604199.XU
Authority: CN
Inventors: 叶建森
Original assignee: Zhengzhou Institute of Technology
Current assignee: Zhengzhou Institute of Technology
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-10-27
Anticipated expiration: 2030-04-21

Abstract

The utility model belongs to the technical field of optical fiber vibration sensors, in particular to an optical fiber vibration sensor device, which comprises a shell, a sensor body and an optical fiber connector, wherein the sensor body and the optical fiber connector are arranged in the shell; the first shell and the second shell are connected through a fastening bolt to form a cylindrical shell; and a waterproof rubber strip is laid around the periphery of the accommodating cavity on the plane of the first shell. The technical scheme of the utility model design into two parts through the shell with optic fibre vibration sensor, fix the two through articulated mode fixed with fastening nut, inside sealed annular and the semi-ring groove on through spacing rubber and spacing piece cooperation outer qiao inner wall of shell is fixed sensor body and fiber connector in the shell, and not only easy to assemble and later maintenance still have certain cushioning effect, can avoid taking place to damage in the transportation.

Description

Optical fiber vibration sensor device

Technical Field

The utility model belongs to the technical field of the optical fiber vibration sensor, particularly, relate to an optical fiber vibration sensor device.

Background

In the process of sensor development towards sensitivity, accuracy, adaptability, compactness and intelligence, new members of this family of sensors are favored by fiber optic sensors, which have many excellent properties, such as: the material has the performance of resisting electromagnetic and atomic radiation interference, and has the mechanical properties of thin diameter, soft quality and light weight; insulating, non-inductive electrical performance; the sensor has the chemical properties of water resistance, high temperature resistance, corrosion resistance and the like, can play the role of human ears and eyes in places where people cannot reach or regions harmful to people, can exceed the physiological limit of people, and can receive external information which cannot be sensed by the senses of people, wherein the basic working principle of the optical fiber vibration sensor is that an optical signal from a light source is sent into a modulator through an optical fiber, so that the optical property of light is changed after the parameter to be measured interacts with the light entering a modulation region, the optical signal becomes a modulated signal source, and the parameter to be measured is obtained after the optical fiber is sent into a light detector and demodulated.

Most of the existing optical fiber vibration sensors for liquid environments are not tight enough at the connection part, so that liquid flows into the optical fiber vibration sensors along the gap, the parts in the optical fiber vibration sensors are corroded, the service life of the optical fiber vibration sensors is seriously influenced, and meanwhile, the problem of inconvenience in assembly exists.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an optical fiber vibration sensor device, which is not tight enough to seal the optical fiber acoustic sensor junction in the prior art, and has the liquid flowing into the inside of the optical fiber vibration sensor along the gap, so as to cause the corrosion of the parts inside the sensor, which seriously affects the service life and other problems of the optical fiber vibration sensor, and at the same time, has the problem of inconvenient assembly.

In order to solve the problems, the utility model provides an optical fiber vibration sensor device, including shell, the sensor body and the optical fiber connector of installation in the shell, the shell includes first casing and second casing, and first casing and second casing one side are articulated, and the opposite side passes through fastening bolt to be connected, first casing and second casing structure are the same, first casing transversely becomes olive-shaped, and the cross-section is semicircular, has seted up semicircular holding chamber on the first casing plane, and holding chamber both ends all are connected with the half slot, are provided with sealed annular groove on the half slot, are close to and all be provided with two half annular grooves side by side on the lateral wall at holding chamber both ends; the sensor body is fixedly connected with a first sealing ring and a first limiting sheet, two sides of the first limiting sheet are respectively provided with a first limiting rubber ring, and the first sealing ring and the first limiting rubber ring are respectively matched with the sealing ring groove and the semicircular groove; the optical fiber connector is also fixedly connected with a second sealing ring and a second limiting sheet, two sides of the second limiting sheet are respectively provided with a second limiting rubber ring, and the second sealing ring and the second limiting rubber ring are respectively matched with the sealing ring groove and the semicircular groove; the sensor body is connected with the optical fiber connector in the accommodating cavity through an internal optical fiber; the first shell and the second shell are connected through fastening bolts to form a cylindrical shell; and a waterproof rubber strip is laid around the periphery of the accommodating cavity on the plane of the first shell.

Further, the thickness of the waterproof rubber strip is between 0.2 and 0.5mm, and the width of the waterproof rubber strip is between 0.8 and 1 cm.

Further, the first shell and the second shell are hinged through a hinge.

Furthermore, the first limiting rubber ring is sleeved on the sensor body in a sliding mode, and the second limiting rubber ring is sleeved on the optical fiber connector in a sliding mode.

Further, a protective cap is arranged at the end part of the shell at the end of the sensor body, and the protective cap is connected to the end part of the shell through threads.

The utility model has the advantages that: the technical scheme of the utility model through design into two parts with optic fibre vibration sensor's shell, fix the two through the fixed mode of articulated and fastening nut, inside the shell through spacing rubber and spacing piece cooperation outer foreign matter on the inner wall seal ring groove and semi-ring groove with sensor body and fiber connector fixed in the shell, not only easy to assemble and later maintenance, still have certain cushioning effect, cooperate the use of protective cap, can avoid the sensor body to take place to damage in the transportation;

waterproof rubber strips are laid between the first shell and the second shell of the shell, so that the shell has a strong waterproof effect, and meanwhile, the shell and the second shell can be conveniently separated in an air heater heating mode.

Drawings

In the drawings:

fig. 1 is an overall structure opening schematic diagram of the present invention;

fig. 2 is a schematic view of the open structure of the housing of the present invention;

FIG. 3 is a general view of the external structure of the present invention;

in the figure, 1 is a sensor body, 2 is a first sealing ring, 3 is a first housing, 3-1 is a protective cap, 4 is a first limit rubber ring, 5 is a semi-ring groove, 6 is a containing cavity, 7 is a fixing plate, 8 is an internal optical fiber, 9 is a screw hole, 10 is a second limit sheet, 11 is an optical fiber connector, 12 is a second housing, 13 is a hinge, 14 is a waterproof rubber strip, 15 is a sealing ring groove, 16 is a semi-circular groove, 17 is a fastening bolt, 18 is a first limit sheet, 19 is a second sealing ring, and 20 is a second limit rubber ring.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1: as shown in fig. 1 to 3, an optical fiber vibration sensor device includes a housing, a sensor body 1 and an optical fiber connector 11 installed in the housing, the housing includes a first housing 3 and a second housing 12, one side of the first housing 3 is hinged to the second housing 12, the other side is connected by a fastening bolt 17, specifically, the first housing 3 and the second housing 12 are provided with a corresponding fixing plate 7 from the right side, and the fixing plate 7 is provided with three round holes for installing the fastening bolts 17; the structure of the first shell 3 is the same as that of the second shell 12, the first shell 3 is horizontally olive-shaped, the cross section of the first shell is semicircular, a semicircular accommodating cavity 6 is formed in the plane of the first shell 3, two ends of the accommodating cavity 6 are connected with semicircular grooves 16, the two semicircular grooves 16 on the first shell 3 and the second shell 12 are spliced together to form an accommodating space of the sensor body 1 or the optical fiber connector 11, a sealing ring groove 15 is formed in each semicircular groove 16, and two side-by-side semicircular grooves 5 are formed in the side walls close to the two ends of the accommodating cavity 6; the sensor body 1 is fixedly connected with a first sealing ring 2 and a first limiting piece 18, two sides of the first limiting piece 18 are respectively provided with a first limiting rubber ring 4, and the first sealing ring 2 and the first limiting rubber ring 4 are respectively matched with a sealing ring groove 15 and a semicircular groove 5; a second sealing ring 19 and a second limiting sheet 10 are fixedly connected to the optical fiber connector 11, a second limiting rubber ring 20 is respectively arranged on two sides of the second limiting sheet 10, and the second sealing ring 19 and the second limiting rubber ring 20 are respectively matched with the sealing ring groove 15 and the semicircular groove 5; the sensor body 1 and the optical fiber connector 11 are connected in the accommodating cavity 6 through the internal optical fiber 8; the first shell 3 and the second shell 12 are connected through a fastening bolt 17 to form a cylindrical shell; a waterproof rubber strip 14 is laid around the circumference of the accommodating chamber 6 on the plane of the first housing 3.

In this embodiment, the thickness of the waterproof strip 14 is 0.2-0.5mm, and the width is 0.8-1cm, or a groove having a shape consistent with that of the waterproof strip 14 is formed on the first shell or the second shell 12 where the waterproof strip 14 is located, and the depth of the groove is one third of the thickness of the waterproof strip. The first casing 3 and the second casing 12 are hinged by a hinge. The first limiting rubber ring 4 is sleeved on the sensor body 1 in a sliding manner, and the second limiting rubber ring 20 is sleeved on the optical fiber connector 11 in a sliding manner. The end part of the shell at the end of the sensor body 1 is provided with a protective cap 3-1, the protective cap 3-1 is made of transparent plastic, and the protective cap 3-1 is screwed and connected on a protrusion at the end part of the shell through internal threads arranged on the inner wall of the edge.

The assembling process comprises the following steps: the first shell and the second shell are opened, the limiting rubber rings are sleeved on two sides of the sensor body and the cable connector body, the first sealing ring is sleeved on the sensor body, the second sealing ring is sleeved in a ring groove of the optical fiber connector for installing the first sealing ring and the second sealing ring, and the sensor body and the optical fiber connector are connected through internal optical fibers; placing the assembled sensor body and the optical fiber connector in a first shell, and laying a waterproof adhesive tape around an accommodating cavity of the first shell; finally, the second shell is turned upwards, and the first shell and the second shell are fixed together through fastening bolts; the protective cap can be sleeved on the shell in a non-use state, and the protective cap can be taken down when the protective cap is used.

The use principle is as follows: the optical transmitter transmits an optical signal to the sensor body through the optical fiber, the light resonates through a sensitive element of the sensor body, the light is transmitted to the optical receiver after being received by the optical fiber, and the optical receiver is processed by the signal processing unit in the later period to perform complete vibration detection.

The foregoing detailed description has been presented to illustrate the principles and embodiments of the present application by way of example, and the foregoing detailed description is only for the purpose of facilitating understanding the method and the core concept of the present application, and the present disclosure should not be construed as limiting the present application by way of limitation, as will be apparent to those skilled in the art based on the teachings herein.

Claims

1. The utility model provides an optic fibre vibration sensor device, includes the shell, installs sensor body and the fiber connector in the shell, its characterized in that: the shell comprises a first shell and a second shell, one side of the first shell is hinged with one side of the second shell, the other side of the first shell is connected with the second shell through a fastening bolt, the first shell and the second shell are identical in structure, the first shell is transversely olive-shaped, the cross section of the first shell is semicircular, a semicircular accommodating cavity is formed in the plane of the first shell, two ends of the accommodating cavity are connected with semicircular grooves, sealing ring grooves are formed in the semicircular grooves, and two side-by-side semicircular grooves are formed in the side walls close to the two ends of the accommodating cavity; the sensor body is fixedly connected with a first sealing ring and a first limiting sheet, two sides of the first limiting sheet are respectively provided with a first limiting rubber ring, and the first sealing ring and the first limiting rubber ring are respectively matched with the sealing ring groove and the semicircular groove; the optical fiber connector is also fixedly connected with a second sealing ring and a second limiting sheet, two sides of the second limiting sheet are respectively provided with a second limiting rubber ring, and the second sealing ring and the second limiting rubber ring are respectively matched with the sealing ring groove and the semicircular groove; the sensor body is connected with the optical fiber connector in the accommodating cavity through an internal optical fiber; the first shell and the second shell are connected through fastening bolts to form a cylindrical shell; and a waterproof rubber strip is laid around the periphery of the accommodating cavity on the plane of the first shell.

2. The fiber optic vibration sensor device of claim 1, wherein: the thickness of the waterproof adhesive tape is between 0.2 and 0.5mm, and the width of the waterproof adhesive tape is between 0.8 and 1 cm.

3. The fiber optic vibration sensor device of claim 1, wherein: the first shell and the second shell are hinged through a hinge.

4. The fiber optic vibration sensor device of claim 1, wherein: the first limiting rubber ring is sleeved on the sensor body in a sliding mode, and the second limiting rubber ring is sleeved on the optical fiber connector in a sliding mode.

5. The fiber optic vibration sensor device of claim 1, wherein: and a protective cap is arranged at the end part of the shell at the end of the sensor body and is connected to the end part of the shell through threads.