High-temperature-resistant optical fiber sensor

Abstract

The utility model discloses a high-temperature-resistant optical fiber sensor, relates to the technical field of sensors, and aims to solve the problems that in the prior art, a structure capable of rapidly dissipating heat is lacked, and when the use temperature of an optical fiber connector is too high, the normal use of equipment is easily influenced by the too high temperature, the high-temperature-resistant optical fiber sensor comprises the optical fiber connector, the optical fiber connector comprises an outer shell, the inner wall of the outer shell is connected with a cooling pipe, the inner wall of the cooling pipe is connected with an inner shell, and one end of the inner shell is connected with a check ring. According to the utility model, the cooling liquid is injected into the cavity of the cooling pipe, the cooling liquid is used for cooling the internal temperature of the optical fiber connector, the cooling sheet is used for cooling the cooling liquid, the heat conduction plate is used for transmitting the temperature on the cooling sheet to the heat dissipation plate, and the heat dissipation fan is matched to drive the air in the fixed shell to exchange with the outside for flowing. Heat of the heat dissipation plate in the fixing shell is dissipated and discharged, and the low-temperature working environment of the optical fiber connector is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a high-temperature resistant fiber optic sensor. Background Art

[0002] A fiber optic sensor is a sensor that converts the state of a measured object into a measurable optical signal. The working principle of a fiber optic sensor is to send the light beam incident from a light source into a modulator through an optical fiber. Inside the modulator, it interacts with the external measured parameter, causing changes in the optical properties of the light, such as the intensity, wavelength, frequency, phase, polarization state, etc. of the light, becoming a modulated optical signal. Then, it is sent through the optical fiber to an optoelectronic device and the measured parameter is obtained after demodulation. Throughout the process, the light beam is introduced through the optical fiber and then emitted after passing through the modulator. The role of the optical fiber is first to transmit the light beam and second to act as a light modulator.

[0003] The existing fiber optic sensors lack a structure that can dissipate heat quickly. When the operating temperature of the fiber optic connector is too high, the excessive temperature is likely to affect the normal use of the device. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a high-temperature resistant fiber optic sensor, which overcomes the deficiencies of the prior art and effectively solves the problem in the prior art that there is a lack of a structure that can dissipate heat quickly, and when the operating temperature of the fiber optic connector is too high, the excessive temperature is likely to affect the normal use of the device.

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

[0006] A high-temperature resistant fiber optic sensor includes a fiber optic connector. The fiber optic connector includes a housing, and a cooling pipe is connected to the inner wall of the housing. The inner wall of the cooling pipe is connected to an inner housing, and a retaining ring is connected to one end of the inner housing. A fixing shell is inserted and fixed at the top of the inner housing, and dust-proof rings are respectively inserted at the top parts of the outer walls on both sides of the fixing shell. Partition plates are fixed on the inner walls around the fixing shell, and heat conduction plates are inserted and fixed at equal distances at the bottom of the partition plates. The bottom ends of the heat conduction plates are connected to a refrigeration chip, and the top ends of the heat conduction plates are connected to a heat dissipation plate.

[0007] By injecting a coolant into the cavity of the cooling pipe, the temperature inside the fiber optic connector is cooled by the coolant. The coolant is cooled by the refrigeration chip. The heat conduction plates transfer the temperature on the refrigeration chip to the heat dissipation plate, and cooperate with a cooling fan to drive the air inside the fixing shell to exchange and flow with the outside, dissipating and discharging the heat of the heat dissipation plate inside the fixing shell, ensuring a low-temperature working environment for the fiber optic connector.

[0008] Preferably, the outer diameter of the retaining ring is adapted to the outer diameter of the housing, and the inner diameter of the retaining ring is adapted to the inner diameter of the inner housing.

[0009] One end of the outer shell, the cooling pipe and the inner shell is blocked by a retaining ring.

[0010] Preferably, through holes are formed at the tops of the outer walls on both sides of the fixed shell, and the through holes are in plug-in fit with the dust-proof rings.

[0011] The dust-proof rings inserted into the outer walls on both sides of the fixed shell through the through holes are convenient for disassembly, installation and cleaning.

[0012] Preferably, dust-proof nets are fixed at one ends of the annular inner walls of the dust-proof rings, and a cooling fan is fixed at the other end of the annular inner wall of one of the dust-proof rings.

[0013] The air passing through is filtered by the dust-proof nets, and the cooling fan drives the air inside the fixed shell to flow and replace with the outside air, so as to dissipate the heat inside the fixed shell.

[0014] Preferably, a cavity is arranged between the outer wall and the inner wall of the cooling pipe, and the fixed shell is communicated with the cavity.

[0015] By injecting a coolant into the cavity of the cooling pipe, the low temperature inside the optical fiber connector is ensured by the coolant.

[0016] Preferably, an opening is formed at the top of the outer wall of the outer shell, and the specification of the opening is adapted to the specifications of the outer walls around the fixed shell.

[0017] The fixed shell penetrates through the outer wall of the outer shell through the opening and is inserted and fixed with the cooling pipe.

[0018] The beneficial effects of the present utility model are as follows:

[0019] By injecting a coolant into the cavity of the cooling pipe, the temperature inside the optical fiber connector is cooled down by the coolant, the coolant is cooled down by the refrigerating sheet, the heat on the refrigerating sheet is transferred to the heat dissipation plate by the heat conduction plate, and the heat of the heat dissipation plate inside the fixed shell is dissipated and discharged by cooperating with the cooling fan to drive the air inside the fixed shell to flow and replace with the outside air, so as to ensure the low-temperature working environment of the optical fiber connector, effectively solving the problem in the prior art that there is a lack of a structure that can quickly dissipate heat, and when the use temperature of the optical fiber connector is too high, the too high temperature is likely to affect the normal use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic diagram of the overall structure of a high-temperature resistant optical fiber sensor proposed by the present utility model;

[0021] Figure 2 FIG. is a schematic diagram of the split structure of the optical fiber connector of a high-temperature resistant optical fiber sensor proposed by the present utility model;

[0022] Figure 3Schematic diagram of the cooling pipe structure of a high-temperature resistant optical fiber sensor proposed by the present utility model.

[0023] In the figure: 1, optical fiber connector; 2, outer shell; 3, cooling pipe; 4, inner shell; 5, retaining ring; 6, fixed shell; 7, dust-proof ring; 8, cooling fan; 9, partition board; 10, heat conduction plate; 11, refrigeration chip; 12, heat dissipation plate. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Embodiment:

[0026] Refer to Figures 1-3 , a high-temperature resistant optical fiber sensor, including an optical fiber connector 1. The optical fiber connector 1 includes an outer shell 2. The inner wall of the outer shell 2 is connected with a cooling pipe 3. The inner wall of the cooling pipe 3 is connected with an inner shell 4. One end of the inner shell 4 is connected with a retaining ring 5. The top of the inner shell 4 is inserted and fixed with a fixed shell 6. The top parts of the outer walls on both sides of the fixed shell 6 are respectively inserted with dust-proof rings 7. The inner walls around the fixed shell 6 are fixed with partition boards 9. The bottom of the partition board 9 is inserted and fixed with heat conduction plates 10 distributed at equal distances. The bottom end of the heat conduction plate 10 is connected with a refrigeration chip 11, and the top end of the heat conduction plate 10 is connected with a heat dissipation plate 12;

[0027] The outer diameter of the retaining ring 5 is adapted to the outer diameter of the outer shell 2, and the inner diameter of the retaining ring 5 is adapted to the inner diameter of the inner shell 4. One end of the outer shell 2, the cooling pipe 3 and the inner shell 4 is blocked by the retaining ring 5. Through holes are opened at the top parts of the outer walls on both sides of the fixed shell 6. The through holes form an insertion fit with the dust-proof rings 7. The dust-proof rings 7 inserted into the outer walls on both sides of the fixed shell 6 through the through holes are convenient for disassembly and cleaning. Dust-proof nets are fixed at one ends of the annular inner walls of the dust-proof rings 7. A cooling fan 8 is fixed at the other end of the annular inner wall of one of the dust-proof rings 7. The air passing through is filtered by the dust-proof nets. The cooling fan 8 drives the air in the fixed shell 6 to be replaced and flow with the outside, and the inside of the fixed shell 6 is cooled;

[0028] A cavity is arranged between the outer wall and the inner wall of the cooling pipe 3. The fixed shell 6 is communicated with the cavity. By injecting a coolant into the cavity of the cooling pipe 3, the low temperature of the inside of the optical fiber connector 1 is ensured by the coolant. An opening is opened at the top of the outer wall of the outer shell 2. The specification of the opening is adapted to the specification of the outer walls around the fixed shell 6. The fixed shell 6 penetrates through the outer wall of the outer shell 2 through the opening and is inserted and fixed with the cooling pipe 3.

[0029] Working principle:

[0030] During operation, coolant is injected into the cavity of the cooling pipe 3, and the coolant cools down the temperature inside the optical fiber connector 1. The Peltier element 11 cools down the coolant, and the heat conducting plate 10 transfers the temperature on the Peltier element 11 to the heat dissipating plate 12. The cooling fan 8 is used to drive the air inside the fixed housing 6 to flow and exchange with the outside, dissipating and discharging the heat of the heat dissipating plate 12 inside the fixed housing 6, ensuring a low-temperature working environment for the optical fiber connector 1.

[0031] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A high temperature resistant optical fiber sensor, comprising an optical fiber connector (1), characterized in that: The optical fiber connector (1) comprises an outer shell (2), and the inner wall of the outer shell (2) is connected to a cooling tube (3), the inner wall of the cooling tube (3) is connected to an inner shell (4), and one end of the inner shell (4) is connected to a retaining ring (5), the top of the inner shell (4) is plugged and fixed with a fixed shell (6), and the tops of the outer walls on both sides of the fixed shell (6) are respectively plugged with dust rings (7), the inner walls around the fixed shell (6) are fixed with partitions (9), and the bottom of the partitions (9) are plugged and fixed with heat conduction plates (10) distributed at equal distances, the bottom end of the heat conduction plate (10) is connected to a cooling plate (11), and the top of the heat conduction plate (10) is connected to a heat dissipation plate (12).

2. A high temperature resistant optical fiber sensor according to claim 1, characterized in that: The outer diameter of the retaining ring (5) matches the outer diameter of the outer shell (2), and the inner diameter of the retaining ring (5) matches the inner diameter of the inner shell (4).

3. A high temperature resistant optical fiber sensor according to claim 1, characterized in that: Through holes are provided at the tops of the outer walls on both sides of the fixed shell (6), and the through holes are plug-fitted with the dustproof ring (7).

4. A high temperature resistant optical fiber sensor according to claim 1, characterized in that: A dustproof net is fixed to one end of the annular inner wall of each dustproof ring (7), and a heat dissipation fan (8) is fixed to the other end of the annular inner wall of one of the dustproof rings (7).

5. A high temperature resistant optical fiber sensor according to claim 1, characterized in that: A cavity is provided between the outer wall and the inner wall of the cooling pipe (3), and the fixed shell (6) and the cavity are communicated with each other.

6. A high temperature resistant optical fiber sensor according to claim 1, characterized in that: An opening is provided at the top of the outer wall of the outer shell (2), and the specifications of the opening are compatible with the specifications of the surrounding outer walls of the fixed shell (6).

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