Probe positioning assembly and fluorescent optical fiber temperature measuring device

Abstract

The utility model discloses a probe positioning assembly and a fluorescent optical fiber temperature measuring device, the probe positioning assembly is used for positioning and fixing an optical fiber, and the probe positioning assembly comprises an outer sleeve which is arranged outside an outer protective sleeve along an outer area of a fluorescent material layer, and the outer sleeve comprises a first sleeve body; the pressing assembly is arranged in the cross direction in the first sleeve body, and an inner pressing plate is arranged at one end of the pressing assembly; the pressing assembly comprises a first fixing plate, a second fixing plate and a pressure spring, the pressure spring is fixedly arranged between the first fixing plate and the second fixing plate, the first fixing plate is fixed to the first sleeve body, and the second fixing plate is fixed to the inner pressing plate. According to the utility model, the effect of further pressing the fluorescent material filled in the gap is realized, so that the problem that the temperature measurement precision is affected due to the displacement and even falling of the fluorescent material filled in the gap caused by the enlargement of the gap between the sleeve and the end part of the optical fiber is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of fluorescent fiber optic temperature measurement devices, and in particular to a probe positioning component and a fluorescent fiber optic temperature measurement device. Background Technology

[0002] Fluorescent fiber optic thermometry is a novel temperature measurement method based on fiber optic sensing and fluorescence thermometry principles. It utilizes rare-earth ion-doped fluorescent materials as temperature sensors. These materials, when excited by light of a specific wavelength, transition from the ground state to an excited state, and then return to the ground state via radiative transition, emitting characteristic fluorescence. A certain parameter of the fluorescence (such as fluorescence intensity, fluorescence peak position, or fluorescence lifetime) is modulated by temperature, and the relationship between them exhibits monotonicity; therefore, this relationship can be used for temperature measurement.

[0003] A fluorescence fiber optic temperature measurement device typically consists of a light source, optical fiber, fluorescence temperature sensor, photodetector, signal processing unit, temperature calculation unit, and human-machine interface. The light source provides stable excitation light, generally a pulsed laser or modulated LED. The optical fiber transmits the excitation light and fluorescence signal, typically using quartz optical fiber. The fluorescence temperature sensor, based on rare-earth-doped fluorescent material, converts temperature information into an optical signal. The photodetector receives and converts the fluorescence signal, then transmits the converted electrical signal to the signal processing unit for amplification, filtering, and digitization. The temperature calculation unit converts changes in the fluorescence signal into temperature values ​​based on a calibration curve and displays real-time temperature data on the human-machine interface, while also allowing users to set temperature parameters and manage historical data.

[0004] The probe positioning assembly of a fluorescent fiber optic temperature measurement device is a crucial component of fluorescent fiber optic temperature measurement technology. It directly affects the accuracy and stability of temperature measurements, as well as the device's applicability in various complex environments. Currently, most fluorescent fiber optic temperature measurement probes on the market employ a method of directly coating the fluorescent material onto the end of the optical fiber and then wrapping it with a sleeve.

[0005] Because the gap between the sleeve and the fiber end may widen, the fluorescent material filling the gap may shift or even fall off, affecting the temperature measurement accuracy. Furthermore, traditional probe positioning components are often difficult to position and install precisely, causing inconvenience in practical use.

[0006] Therefore, it is necessary to solve the problems existing in the current technology and improve the accuracy and stability of temperature measurement, which has important practical significance and application value. Utility Model Content

[0007] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0008] Another objective of this invention is to provide a fluorescent fiber optic temperature measuring device and a probe positioning component, which achieves the effect of further compressing the fluorescent material filling the gap, thereby effectively avoiding the problem that the fluorescent material filling the gap will shift or even fall off due to the gap between the sleeve and the end of the optical fiber becoming larger, thus affecting the temperature measurement accuracy.

[0009] To achieve the above objectives and some other objectives, the present invention adopts the following technical solution:

[0010] A probe positioning assembly for positioning and fixing an optical fiber, wherein a fluorescent material layer is disposed on the outer side of the optical fiber, and the optical fiber and the fluorescent material layer are jointly covered by an outer protective sleeve; the probe positioning assembly includes:

[0011] An outer sleeve, disposed outside the outer protective sleeve along the outer region of the fluorescent material layer, the outer sleeve comprising a first sleeve body; and

[0012] A clamping assembly is disposed inside the first sleeve body in a cross direction, and an inner clamping plate is provided at one end of the clamping assembly; the clamping assembly includes a first fixing plate, a second fixing plate and a pressure spring, the pressure spring being fixedly disposed between the first fixing plate and the second fixing plate, the first fixing plate being fixed to the first sleeve body, and the second fixing plate being fixed to the inner clamping plate.

[0013] Preferably, there are four clamping components, symmetrically arranged in a cross direction inside the first sleeve body.

[0014] Preferably, there are two pressure springs between the first fixing plate and the second fixing plate, and the two pressure springs are disposed on both sides between the first fixing plate and the second fixing plate.

[0015] Preferably, an outer fastening sleeve is provided on one side of the outer protective sleeve, the outer fastening sleeve including a second sleeve body, the inner surface of the second sleeve body being spirally provided with an internal thread groove.

[0016] Preferably, the first sleeve body is integrally connected with an external thread, and the first sleeve body and the second sleeve body are connected by an internal thread groove and an external thread.

[0017] Preferably, a rectangular slot is formed on the outer surface of the first sleeve in a cross direction, one end of the rectangular slot penetrates the first sleeve body, and the penetrating end of the rectangular slot is set towards the direction of fastening the sleeve outward.

[0018] Preferably, the outer protective sleeve has an outer semi-circular limiting strip arranged in a ring along the outer region of the fluorescent material layer on its outer surface, and the outer semi-circular limiting strip is extruded.

[0019] The inner surface of the inner pressing plate is provided with a ring array of semi-circular limiting grooves, and the four semi-circular limiting grooves on the inner pressing plate are matched in position and shape with the outer semi-circular limiting strip.

[0020] Preferably, the second sleeve body has a connecting platform integrally connected to the side away from the outer sleeve.

[0021] Preferably, an outer connecting tube is integrally connected to one side of the connecting platform, the inner diameter of the outer connecting tube matches the outer diameter of the outer protective sleeve, and a gripping part is integrally connected to the middle of the outer side of the outer connecting tube, with multiple bends provided on the outer surface of the gripping part.

[0022] In addition, this utility model also provides a fluorescent fiber optic temperature measuring device, including the probe positioning component as described above.

[0023] This utility model has at least the following beneficial effects:

[0024] 1. In this invention, the outer sleeve is pushed inward along the outer protective sleeve, and during the advancement of the inner clamping plate, it moves outward. The pressure spring is compressed and deformed, giving the inner clamping plate a reaction force that presses against the outside of the outer protective sleeve. Through the combined action of the outer sleeve, the clamping assembly, and the outer fastening sleeve, the outer protective sleeve is firmly positioned, preventing loosening and displacement, and improving the stability and accuracy of the temperature measurement results. It also achieves a further pressing effect on the fluorescent material filling the gaps, effectively avoiding the problem of the fluorescent material shifting or even falling off due to the widening gap between the sleeve and the fiber end, thus affecting the temperature measurement accuracy.

[0025] 2. In this utility model, the design of the rectangular slot and the elastic clamping structure can adapt to the aging of the outer protective sleeve material, always maintain a tight clamping effect, and extend the service life of the temperature measuring device.

[0026] 3. In this utility model, the matching design of the limiting strip and the limiting groove ensures the accurate positioning of the outer sleeve and improves the stability and reliability of the positioning structure. Furthermore, the matching design of the limiting strip and the limiting groove increases the contact area of ​​the structure, which is more conducive to a firm and secure clamping.

[0027] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the probe positioning component of the fluorescent fiber optic temperature measuring device of this utility model from the main view.

[0029] Figure 2This is a schematic diagram of the overall structure of the probe positioning assembly of the fluorescent fiber optic temperature measuring device of this utility model from the rear view.

[0030] Figure 3 This is a schematic diagram of the outer sleeve of the probe positioning assembly of the fluorescent fiber optic temperature measuring device of this utility model.

[0031] Figure 4 This is a schematic diagram of the clamping assembly of the probe positioning component of the fluorescent fiber optic temperature measuring device of this utility model.

[0032] Figure 5 This is a schematic diagram of the outer fastening sleeve of the probe positioning assembly of the fluorescent fiber optic temperature measuring device of this utility model.

[0033] Figure 6 This is a front view of the probe positioning assembly of the fluorescent fiber optic temperature measuring device of this utility model.

[0034] Figure 7 This is a cross-sectional view of the probe positioning component of the fluorescent fiber optic temperature measuring device of this utility model at point AA.

[0035] Figure 8 This is an enlarged view of section B of the probe positioning component of the fluorescent fiber optic temperature measuring device of this utility model. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can implement it after referring to this specification.

[0037] like Figure 1-8 As shown, a fluorescent fiber optic temperature measuring device may include a probe positioning component.

[0038] The fluorescent optical fiber has an optical fiber 1, a fluorescent material layer 3 is disposed on one side of the outer side of the optical fiber 1, and the optical fiber 1 and the fluorescent material layer 3 are jointly covered by an outer protective sleeve 2.

[0039] The probe positioning assembly includes an outer sleeve 5, which is disposed outside the outer protective sleeve 2 along the outer region of the fluorescent material layer 3. The outer sleeve 5 includes a first sleeve body 6.

[0040] A clamping assembly 9 is disposed inside the first sleeve body 6 in a cross direction, and an inner clamping plate 13 is disposed at the other end of the clamping assembly 9; the clamping assembly 9 includes a first fixing plate 10, a second fixing plate 11 and a pressure spring 12, the pressure spring 12 is fixedly disposed between the first fixing plate 10 and the second fixing plate 11, the first fixing plate 10 is fixed to the first sleeve body 6, and the second fixing plate 11 is fixed to the inner clamping plate 13.

[0041] In the above scheme, the fluorescent material layer is used to emit a fluorescent signal during temperature measurement, and the outer protective sleeve protects the optical fiber and the fluorescent material layer from damage by the external environment, ensuring the stability and accuracy of the temperature measuring element and improving the temperature measuring performance.

[0042] The clamping assembly uses the elastic force of the pressure spring to make the inner clamping plate fit tightly against the outer protective sleeve, achieving a firm positioning effect, ensuring a tight connection between the outer sleeve and the outer protective sleeve, preventing loosening, and improving the positioning firmness.

[0043] In a preferred embodiment, there are four clamping components 9, symmetrically arranged in a cross direction inside the first sleeve body 6.

[0044] In a preferred embodiment, there are two pressure springs 12 between the first fixing plate 10 and the second fixing plate 11, and the two pressure springs 11 are disposed on both sides between the first fixing plate 10 and the second fixing plate 11.

[0045] In a preferred embodiment, an outer fastening sleeve 15 is provided on the other side of the outer protective sleeve 2. The outer fastening sleeve 15 includes a second sleeve body 16, and the inner surface of the second sleeve body 16 is spirally provided with an internal thread groove 17.

[0046] The above scheme prepares for the subsequent re-tightening of the connection.

[0047] In a preferred embodiment, the first sleeve body 6 is integrally connected with an external thread 7, and the first sleeve body 6 and the second sleeve body 16 are connected by a threaded connection between the internal thread groove 17 and the external thread 7.

[0048] In the above scheme, the threaded connection allows the outer fastening sleeve to further tighten the outer sleeve, achieving a reliable connection between the outer sleeve and the outer fastening sleeve, and further enhancing the positioning firmness.

[0049] In a preferred embodiment, a rectangular slot 8 is formed on the outer surface of the first sleeve body 6 in a cross direction. One end of the rectangular slot 8 penetrates the first sleeve body 6, and the penetrating end of the rectangular slot 8 is set towards the direction of the outward fastening sleeve 15.

[0050] In the above scheme, as the outer fastening sleeve is advanced, the first sleeve body deforms inward at the rectangular slot, thereby pressing the clamping component and causing the pressure spring to further tighten the outer protective sleeve. This structure can adapt to the aging of the outer protective sleeve material, ensuring a long-term stable clamping effect and extending the service life of the temperature measuring device.

[0051] In a preferred embodiment, the outer protective sleeve 2 has an outer semi-circular limiting strip 4 arranged in a ring along the outer region of the fluorescent material layer 3 on its outer surface, and the outer semi-circular limiting strip 4 is extruded.

[0052] The inner surface of the inner pressing plate 13 is provided with a ring array of semi-circular limiting grooves 14, and the position and shape of the four semi-circular limiting grooves 14 on the inner pressing plate 13 are matched with the outer semi-circular limiting strips 4.

[0053] In the above scheme, the position and shape of the limiting strip and the limiting groove are matched to ensure that the outer sleeve can be accurately positioned on the outer protective sleeve, thereby improving the accuracy and stability of the positioning.

[0054] In a preferred embodiment, the second sleeve body 16 is integrally connected to the connecting platform 18 on the side away from the outer sleeve 5.

[0055] In the above scheme, the inner diameter of the outer connecting tube matches the outer diameter of the outer protective sleeve, which is used to connect other components or devices. This structure facilitates connection and fixation with other components.

[0056] In a preferred embodiment, an outer connecting tube 19 is integrally connected to the other side of the connecting platform 18. The inner diameter of the outer connecting tube 19 matches the outer diameter of the outer protective sleeve 2. A gripping part 20 is integrally connected to the middle of the outer side of the outer connecting tube 19. The outer surface of the gripping part 20 is provided with multiple bends.

[0057] In the above solution, this structure makes it easy for users to hold and rotate the outer fastening sleeve, improving the convenience and comfort of operation and optimizing the user experience.

[0058] First, push the outer fastening sleeve inward along the outer protective sleeve. Then, align the semi-circular limiting groove of the inner pressure plate on the outer sleeve with the outer semi-circular limiting strip on the outer protective sleeve, and push the outer sleeve inward along the outer protective sleeve. As the inner pressure plate moves outward during the pushing process, the pressure spring is compressed and deformed, giving the inner pressure plate a reaction force to press against the outside of the outer protective sleeve.

[0059] Next, the outer fastening sleeve is pushed towards the outer sleeve until the external thread engages with the internal thread groove. Rotating the gripping part causes the second sleeve to rotate. Since the inner diameter of the second sleeve is slightly smaller than the outer diameter of the first sleeve, and the first sleeve has a rectangular slot, as the second sleeve is pushed forward, the first sleeve deforms inward and presses against the clamping assembly. The pressure spring further tightens the outer protective sleeve. Generally, the outer fastening sleeve is only pushed forward about halfway initially. As the outer protective sleeve material ages, the coating effect on the optical fiber and fluorescent material layers decreases, at which point the outer fastening sleeve is pushed forward further.

[0060] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A probe positioning assembly for positioning and fixing an optical fiber, wherein a fluorescent material layer is disposed on the outer side of the optical fiber, and the optical fiber and the fluorescent material layer are jointly covered by an outer protective sleeve; characterized in that, The probe positioning component includes: An outer sleeve, disposed outside the outer protective sleeve along the outer region of the fluorescent material layer, the outer sleeve comprising a first sleeve body; and A clamping assembly is disposed inside the first sleeve body in a cross direction, and an inner clamping plate is provided at one end of the clamping assembly; the clamping assembly includes a first fixing plate, a second fixing plate and a pressure spring, the pressure spring being fixedly disposed between the first fixing plate and the second fixing plate, the first fixing plate being fixed to the first sleeve body, and the second fixing plate being fixed to the inner clamping plate.

2. The probe positioning assembly as described in claim 1, characterized in that, There are four clamping components, symmetrically arranged in a cross direction inside the first sleeve body.

3. The probe positioning assembly as described in claim 1, characterized in that, There are two pressure springs between the first fixed plate and the second fixed plate, and the two pressure springs are arranged on both sides between the first fixed plate and the second fixed plate.

4. The probe positioning assembly as described in claim 1, characterized in that, An outer fastening sleeve is provided on one side of the outer protective sleeve. The outer fastening sleeve includes a second sleeve body, and the inner surface of the second sleeve body is spirally provided with an internal thread groove.

5. The probe positioning assembly as described in claim 4, characterized in that, The first sleeve body has an integral external thread, and the first sleeve body and the second sleeve body are connected by an internal thread groove and an external thread.

6. The probe positioning assembly as described in claim 4, characterized in that, A rectangular slot is formed on the outer surface of the first sleeve in a cross direction. One end of the rectangular slot penetrates the first sleeve body, and the penetrating end of the rectangular slot is set towards the direction of fastening the sleeve outward.

7. The probe positioning assembly as described in claim 1, characterized in that, The outer protective sleeve has an outer semi-circular limiting strip arranged in a ring along the outer region of the fluorescent material layer on its outer surface. The outer semi-circular limiting strip is extruded and formed. The inner surface of the inner pressing plate is provided with a ring array of semi-circular limiting grooves, and the four semi-circular limiting grooves on the inner pressing plate are matched in position and shape with the outer semi-circular limiting strip.

8. The probe positioning assembly as described in claim 4, characterized in that, The second sleeve has a connecting platform integrally connected to the side of the sleeve away from the outer sleeve.

9. The probe positioning assembly as described in claim 8, characterized in that, An outer connecting tube is integrally connected to one side of the connecting platform. The inner diameter of the outer connecting tube matches the outer diameter of the outer protective sleeve. A gripping part is integrally connected to the middle of the outer connecting tube. Multiple bends are provided on the outer surface of the gripping part.

10. A fluorescent fiber optic temperature measuring device, characterized in that... Includes the probe positioning component as described in any one of claims 1-9.

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