CN218628377U - Fiber grating sensor adopting resin composite material - Google Patents
Fiber grating sensor adopting resin composite material Download PDFInfo
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- CN218628377U CN218628377U CN202222846434.6U CN202222846434U CN218628377U CN 218628377 U CN218628377 U CN 218628377U CN 202222846434 U CN202222846434 U CN 202222846434U CN 218628377 U CN218628377 U CN 218628377U
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Abstract
The utility model discloses an adopt resin composite's fiber grating sensor, including optic fibre and be used for carrying out the packaging structure who encapsulates to optic fibre, optic fibre inlays to be established inside packaging structure, and packaging structure carries out the epoxy who fills including being used for as the glass fiber base plate of packaging structure main part and being used for optic fibre and glass fiber base plate's junction, the glass fiber base plate with epoxy constitutes dual flexible packaging structure jointly, the beneficial effects of the utility model are that the sensor is whole to be flexible structure, can laminate the appearance of testee, is difficult for droing, and glass fiber base plate constitutes double-deck packaging structure with epoxy jointly, avoids fiber grating and packaging structure's junction to appear the phenomenon of rupture, and connection stability is good, can the real-time supervision of wide application in nonmetal testee, and the practicality is strong to it has the electric smelting structure, heats the electric smelting structure through reserving the contact, can make the sensor and by survey pipeline combine together, and it is convenient to install.
Description
Technical Field
The utility model belongs to the technical field of the sensor technique and specifically relates to an adopt resin combined material's fiber grating sensor is related to.
Background
In the prior art, the basic principle of the fiber grating sensor is that ultraviolet light is adopted to expose the side surface of an optical fiber or perform other writing methods, so that the refractive index of a small segment of the fiber core of the optical fiber is periodically changed along the axis of the optical fiber to obtain the fiber grating; the fiber grating may reflect some or all of the light of a particular wavelength in the incident light. And the absolute measurement of the strain and temperature magnitude of the measured structure is realized by detecting the Bragg wavelength spectrum reflected by the grating. Because the shearing resistance of the existing fiber grating sensor is poor and the fragility of the test main body of the fiber grating sensor limits the application of the fiber grating in some special environments or even extreme environments, the fiber grating sensor is divided into a substrate type and a tubular type in the prior art, most of the fiber grating sensor is made of metal materials as a bearing medium, the fiber grating sensor can adapt to most of service environments, but the glass fiber material object to be tested or the nonmetal object to be tested can be bonded insecurely or cannot be welded.
The application numbers are: 201710119255.3, a chinese patent of the invention discloses a fiber grating sensor capable of being quickly installed and connected and a manufacturing method thereof, and belongs to the technical field of sensors. The manufacturing method comprises the following steps: 1) Selecting a single-core or double-core rubber-insulated optical cable; 2) Stripping off the protective layer from one end of the rubber-insulated-wire cable, reserving the fiber core and the reinforcing piece, and carrying out photoetching treatment on the fiber core at a proper position to obtain the fiber bragg grating sensor integrated with the rubber-insulated-wire cable; 3) And (3) adopting the fiber cloth and the adhesive to package the fiber grating sensor integrated with the rubber-insulated-wire optical cable, thus obtaining the fiber grating sensor capable of being quickly installed and connected. However, the condition of insecure bonding or incapability of welding can occur when the fiber bragg grating sensor which can be quickly installed and connected is matched with a measured object made of glass fiber materials or a non-metal measured object, the connection stability is poor, the fiber bragg grating sensor is integrated with a rubber-covered wire optical cable, and in the use process, because the connection part of the rubber-covered wire optical cable and an optical fiber section is arranged into an encapsulation structure, the phenomenon of fracture easily occurs, the phenomenon of poor contact is caused, the normal use of the fiber bragg grating sensor is influenced, and the practicability is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an adopt resin composite's fiber grating sensor.
In order to achieve the above object, the present invention provides a technical solution:
the utility model provides an adopt resin combined material's fiber grating sensor, includes optic fibre and is used for carrying out the packaging structure who encapsulates to optic fibre, and the optic fibre inlays to be established inside packaging structure, and packaging structure is including being used for as the glass fiber base plate of packaging structure main part and being used for carrying out the epoxy who fills optic fibre and glass fiber base plate's junction, the glass fiber base plate with epoxy constitutes dual flexible packaging structure jointly.
The glass fiber substrate is composed of two glass fiber substrates which are oppositely attached, one side, attached to each other, of each of the two glass fiber substrates is provided with a placing groove, and the placing grooves in the two glass fiber substrates are jointly spliced to form a closed accommodating cavity structure.
The optical fiber and the epoxy resin are positioned in the containing cavity of the glass fiber substrate, and the containing cavity structure is filled with the epoxy resin.
The optical fiber comprises an optical fiber grating section and an optical fiber section, wherein the optical fiber section is positioned at one end of the optical fiber grating section, and the optical fiber grating section and the optical fiber section are coaxially arranged and are jointly configured in the accommodating cavity of the glass fiber substrate.
The fiber grating optical fiber cable is characterized by further comprising a fiber protecting sleeve, wherein the fiber protecting sleeve is arranged at the position, away from the fiber grating section, of one end of the fiber section is sleeved with the fiber grating section, the fiber protecting sleeve is close to the end part of the fiber section is embedded in the glass fiber substrate, and the glass fiber substrate is located in the accommodating cavity.
Still include the electric smelting structure, the electric smelting structure includes electric smelting base plate and heater strip, the electric smelting base plate sets up one side of glass fiber base plate and with the laminating of glass fiber base plate sets up, the heater strip inlays to be established the inside of electric smelting base plate.
The heating wires are uniformly coiled inside the electric melting substrate, and the end parts of the heating wires protrude out of the electric melting substrate to be used as electrode contacts.
The electric smelting base plate comprises two-layer HDPE membrane that the laminating set up side by side, the electric smelting base plate with the glass fiber substrate constitutes SMD sensor's major structure jointly, the glass fiber substrate passes through the electric smelting base plate subsides are established on the surface of testee.
The utility model has the advantages that:
the whole flexible construction that is of sensor, the appearance of testee can laminate, be difficult for droing, the glass fiber base plate constitutes double-deck packaging structure with epoxy jointly, avoid fiber grating and packaging structure's junction to appear the phenomenon of rupture, connection stability is good, can wide application in water supply pipeline, the real-time supervision of nonmetal testees such as heat supply pipeline, the appearance is small and exquisite, sensitivity is high, anti-electromagnetic interference, therefore, the clothes hanger is strong in practicability, and it has the electric smelting structure of pre-buried heater strip in the HDPE layer, heat the electric smelting structure through reserving the contact, can make the sensor and surveyed the pipeline fuse together, it is convenient to install.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the optical fiber protective sleeve of the present invention cooperating with a glass fiber substrate;
fig. 3 is a schematic view of the heating wire and the electric melting substrate of the present invention;
fig. 4 is a schematic view of the fit between the binding band and the glass fiber substrate of the present invention.
In the figure: 1. a glass fiber substrate; 2. epoxy resin; 3. a fiber grating segment; 4. a fiber segment; 5. an optical fiber protective sleeve; 6. an electrofusion substrate; 7. heating wires; 8. an electrode contact; 9. and (6) attaching the binding band.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings,
the utility model provides an adopt resin combined material's fiber grating sensor, includes optic fibre and is used for going on the packaging structure who encapsulates to optic fibre, and optic fibre inlays to be established inside packaging structure, and packaging structure is including being used for as the glass fiber base plate 1 of packaging structure main part and being used for carrying out the epoxy 2 of filling optic fibre and glass fiber base plate 1's junction, and glass fiber base plate 1 constitutes dual flexible packaging structure with epoxy 2 jointly, the utility model discloses overall structure schematic diagram is as shown in FIG. 1.
Glass fiber substrate 1 comprises the glass fiber base that two relative laminating set up, and one side that two glass fiber base laminated each other is equipped with the standing groove, and the common amalgamation of standing groove on two glass fiber bases holds the cavity structure for the confined, and wherein, glass fiber substrate 1 that two glass fiber base constitute jointly is used for as SMD sensor packaging structure's main part shell, holds the cavity structure and is used for providing accommodation space for optic fibre and epoxy 2.
Optic fibre and epoxy 2 are located the intracavity that holds of glass fiber substrate 1 and epoxy 2 is full of and holds the chamber structure, and wherein, epoxy 2 fills the chamber that holds between optic fibre and the glass fiber substrate 1 to constitute double-deck base plate structure jointly with glass fiber substrate 1, guarantee sensor packaging structure's stability.
Optical fiber includes fiber grating section 3 and fiber segment 4, fiber segment 4 is located fiber grating section 3's one end, fiber grating section 3 and fiber segment 4 coaxial arrangement and dispose the intracavity that holds at glass fiber substrate 1 jointly, wherein, fiber grating section 3 and fiber segment 4 constitute the main part of optic fibre jointly, the main part of optic fibre inlays the protective properties that can promote the fiber structure in glass fiber substrate 1 and constitutes flexible sensor structure jointly with glass fiber substrate 1.
Still include fiber optic protective sleeve 5, fiber optic protective sleeve 5 cover is established and is kept away from the one end of fiber optic section 4 and cup jointed with fiber optic grating section 3 in fiber optic grating section 3, and fiber optic protective sleeve 5 is close to the tip of fiber optic section 4 and inlays the intracavity that holds that inlays that 1 inside and be located glass fiber substrate 1 at glass fiber substrate, and wherein, fiber optic protective sleeve 5 is used for providing the protection for fiber optic structure, and fiber optic protective sleeve 5 is close to the tip of fiber optic section 4 and inlays the connection stability that 1 inside can promote fiber optic grating section 3 and packaging structure junction at glass fiber substrate, prevents that the phenomenon of rupture from appearing in fiber optic grating section 3 and packaging structure's junction, the utility model discloses fiber optic protective sleeve 5 cooperates the schematic diagram with glass fiber substrate 1 as shown in fig. 2.
Still include the electric smelting structure, the electric smelting structure includes electric smelting base plate 6 and heater strip 7, electric smelting base plate 6 sets up in one side of glass fiber base plate 1 and sets up with 1 laminating of glass fiber base plate, heater strip 7 inlays the inside of establishing at electric smelting base plate 6, the electric smelting structure passes through electric smelting base plate 6 and the cooperation of heater strip 7, constitute the mounting structure of sensor, wherein, electric smelting base plate 6 is used for installing glass fiber base plate 1 on the testee fast, heater strip 7 is used for heating electric smelting base plate 6, thereby install glass fiber base plate 1 on the testee fast.
The even dish of heater strip 7 is established in electric smelting base plate 6 inside and its tip salient in electric smelting base plate 6 in order being regarded as electrode contact 8, and wherein, accessible electric smelting machine is connected electrode contact 8 and is heated heater strip 7 to heat electric smelting base plate 6, the utility model discloses heater strip 7 and electric smelting base plate 6 cooperation sketch map are shown in fig. 3.
Electric smelting base plate 6 comprises two-layer HDPE membrane that the laminating set up side by side, and electric smelting base plate 6 constitutes SMD sensor's major structure jointly with glass fiber base plate 1, and glass fiber base plate 1 pastes through electric smelting base plate 6 and establishes on the surface of testee, and wherein, electric smelting base plate 6 is used for as glass fiber base plate 1's installation basis, and accessible electric smelting base plate 6 is with fiber grating sensor rapid Assembly on the testee.
The manufacturing process of the fiber grating sensor in the scheme is as follows:
firstly, placing demolding cloth in a mold, laying glass fiber prepreg in the mold, then placing a layer of demolding cloth, and then placing the demolding cloth in a vulcanizing machine for heating, pressurizing, curing and molding to obtain a glass fiber substrate 1; placing the HDPE film on a heating table for heating, arranging a heating wire 7 above the HDPE film in a coiling manner, reserving electrode contacts 8 at two ends, covering another HDPE film after the completion, and cooling to obtain an electric melting substrate 6; coating a polyimide solution on the head of the fiber grating, heating and curing, then placing the fiber grating in the right middle position of a glass fiber substrate 1, pouring epoxy resin 2, due to the surface tension of the resin, enabling the resin to be higher than the glass fiber substrate 1, buckling the other glass fiber substrate 1 with the epoxy resin 2, extruding the redundant epoxy resin 2 from two sides and simultaneously discharging air, and then placing an electric melting substrate 6 above the glass fiber substrate 1; putting the mixture into a vulcanizing machine again at 120 ℃ and 0.8MPa, and curing for 60 minutes; and (5) standing for 24 hours after the sensor is taken out, ensuring that the epoxy resin 2 is completely cured, and finishing the manufacture of the sensor.
Still include laminated structure, laminated structure is laminating bandage 9, laminating bandage 9 sets up the one side of keeping away from electric smelting base plate 6 at glass fiber base plate 1, laminating bandage 9's middle part and 1 fixed connection of glass fiber base plate and its both ends salient in glass fiber base plate 1, wherein, when monitoring the pipeline under test, paste the fiber grating sensor and establish when the pipeline under test, accessible laminating bandage 9 binds the fiber grating sensor on the pipeline under test, cooperation electric smelting structure can guarantee that the fiber grating sensor promotes its and the laminating degree of pipeline under test when being connected with the pipeline under test stable, the utility model discloses laminating bandage 9 cooperates the sketch map as shown in figure 4 with glass fiber base plate 1.
The working principle is as follows:
packaging structure and optic fibre constitute double-deck flexible SMD sensor structure jointly, guarantee the laminating of sensor and nonmetal measured object, be applicable to pipeline structure, the phenomenon of rupture appears in the junction of fiber grating section 3 and packaging structure can be prevented to fiber sheathing pipe 5, and sensor accessible electric smelting structure pastes and covers on the measured object surface, need not the welding and can guarantee the stability of being connected between sensor and the measured object, be convenient for assemble, can add laminated structure in addition, thereby further promote the laminating degree between sensor and the measured pipeline.
The beneficial effects of the utility model are that the sensor is whole to be flexible structure, the appearance of testee can laminate, be difficult for droing, the glass fiber base plate constitutes double-deck packaging structure with epoxy jointly, avoid fiber grating and packaging structure's junction to appear phenomenon of splitting, connection stability is good, can wide application in water supply pipe, the real-time supervision of non-metal testees such as heat supply pipeline, the appearance is small and exquisite, sensitivity is high, anti-electromagnetic interference, therefore, the clothes hanger is strong in practicability, and it has the electric smelting structure of pre-buried heater strip in the HDPE layer, heat the electric smelting structure through reserving the contact, can make the sensor and surveyed the pipeline fuse together, it is convenient to install.
While one embodiment of the present invention has been described in detail, the present invention is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (8)
1. The utility model provides an adopt resin composite's fiber grating sensor, includes optic fibre and is used for carrying out the packaging structure who encapsulates to optic fibre, and the optic fibre inlays to be established inside packaging structure, its characterized in that, packaging structure is including being used for as glass fiber substrate (1) of packaging structure main part and being used for carrying out epoxy (2) filled to the junction of optic fibre and glass fiber substrate (1), glass fiber substrate (1) with epoxy (2) constitute dual flexible packaging structure jointly.
2. The fiber grating sensor adopting the resin composite material as claimed in claim 1, wherein the glass fiber substrate (1) is composed of two glass fiber substrates which are oppositely attached, a placing groove is arranged on one side where the two glass fiber substrates are attached to each other, and the placing grooves on the two glass fiber substrates are jointly spliced to form a closed accommodating cavity structure.
3. A fiber grating sensor made of resin composite material according to claim 2, wherein the optical fiber and the epoxy resin (2) are located in the cavity of the glass fiber substrate (1) and the cavity structure is filled with the epoxy resin (2).
4. A fiber grating sensor made of resin composite material according to claim 3, wherein the optical fiber comprises a fiber grating section (3) and a fiber section (4), the fiber section (4) is located at one end of the fiber grating section (3), and the fiber grating section (3) and the fiber section (4) are coaxially arranged and jointly configured in the accommodating cavity of the glass fiber substrate (1).
5. The fiber grating sensor made of the resin composite material according to claim 4, further comprising a fiber protecting sleeve (5), wherein the fiber protecting sleeve (5) is sleeved on one end of the fiber grating section (3) far away from the fiber section (4) and is sleeved on the fiber grating section (3), and an end of the fiber protecting sleeve (5) close to the fiber section (4) is embedded inside the glass fiber substrate (1) and is located in the accommodating cavity of the glass fiber substrate (1).
6. The fiber grating sensor made of the resin composite material according to claim 1, further comprising an electrofusion structure, wherein the electrofusion structure comprises an electrofusion substrate (6) and a heating wire (7), the electrofusion substrate (6) is disposed on one side of the glass fiber substrate (1) and is attached to the glass fiber substrate (1), and the heating wire (7) is embedded inside the electrofusion substrate (6).
7. A fiber grating sensor using resin composite material according to claim 6, wherein said heating wires (7) are uniformly coiled inside said electrofusion substrate (6) and have ends protruding from said electrofusion substrate (6) to serve as electrode contacts (8).
8. The fiber grating sensor made of the resin composite material according to claim 7, wherein the electrofused substrate (6) is formed by two layers of HDPE films which are attached side by side, the electrofused substrate (6) and the glass fiber substrate (1) together form a main structure of the patch sensor, and the glass fiber substrate (1) is attached to a surface of an object to be measured through the electrofused substrate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222846434.6U CN218628377U (en) | 2022-10-27 | 2022-10-27 | Fiber grating sensor adopting resin composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222846434.6U CN218628377U (en) | 2022-10-27 | 2022-10-27 | Fiber grating sensor adopting resin composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218628377U true CN218628377U (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222846434.6U Active CN218628377U (en) | 2022-10-27 | 2022-10-27 | Fiber grating sensor adopting resin composite material |
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| Country | Link |
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| CN (1) | CN218628377U (en) |
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- 2022-10-27 CN CN202222846434.6U patent/CN218628377U/en active Active
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