Fluorescent optical fiber temperature measurement probe, temperature sensor and temperature measurement system

Abstract

The utility model relates to the field of fluorescent optical fiber temperature measurement sensors, in particular to a fluorescent optical fiber temperature measurement probe, a temperature sensor and a temperature measurement system. The fluorescent fiber temperature measurement probe comprises a bare fiber having a first end and a second end; the fluorescent head assembly comprises a fluorescent piece, and the fluorescent piece is fixed at the first end of the bare fiber and covers the end face of the first end; the connector is arranged at the second end of the bare optical fiber; the optical fiber sheath is only composed of a spiral protection sleeve, the spiral protection sleeve is directly arranged on the bare optical fiber in a sleeving mode, one end of the spiral protection sleeve is connected with the fluorescent head assembly, and the other end of the spiral protection sleeve is connected with the connector. According to the utility model, the slim design of the fluorescent fiber temperature measurement probe can be promoted so as to be used and installed in a narrow space, and excessive bubbles do not exist in the probe when the probe is immersed in transformer oil, thereby improving the measurement precision.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorescent optical fiber temperature measurement, in particular to a fluorescent optical fiber temperature measurement probe, a temperature sensor and a temperature measurement system. Background Art

[0002] Fluorescent fiber optic temperature probe has the advantages of high temperature resistance, corrosion resistance, insulation, and anti-magnetic interference. Temperature sensors using fluorescent fiber optic temperature probes have broad application prospects in many fields such as oil-immersed transformer temperature measurement.

[0003] In order to maintain the temperature measurement accuracy, the fluorescent fiber temperature probe needs to be immersed in high-temperature and high-frequency vibrating transformer oil for temperature measurement. However, in the related art, the structure of the optical fiber of the fluorescent fiber temperature probe is mostly a complex structure wrapped with multiple layers of protective layers, the main purpose of which is to protect the bare optical fiber inside. Specifically, the protective layer includes a loose tube, a water-blocking material, a reinforcing member, an outer sheath, etc.

[0004] However, this type of fluorescent fiber temperature probe is not suitable for the temperature measurement environment of oil-immersed transformers. The main reasons are: on the one hand, although it can better protect the bare optical fiber inside, its protective structure is not airtight. When immersed in transformer oil, it is easy to store a lot of air inside the protective layer. The presence of air can easily lead to internal discharge and other problems, thus affecting the measurement accuracy; on the other hand, the protective layer has a complex structure, a large volume, and occupies a lot of space, making it difficult to achieve a slim and miniaturized design, and it is not convenient to assemble in a small space.

[0005] Therefore, there is an urgent need to provide a fluorescent fiber optic temperature measuring probe that can promote the slim design of the fluorescent fiber optic temperature measuring probe so that it can be used and installed in a small space, and there will not be too many bubbles inside when immersed in transformer oil, thereby improving the measurement accuracy. Utility Model Content

[0006] Based on this, it is necessary to provide a fluorescent fiber optic temperature measurement probe, a temperature sensor and a temperature measurement system to address the existing problems, aiming to promote the slim design of the fluorescent fiber optic temperature measurement probe so that it can be installed in a small space, and there will not be too many bubbles inside it when immersed in transformer oil, thereby improving the measurement accuracy.

[0007] The first aspect of the present application provides a fluorescent optical fiber temperature measuring probe, which comprises:

[0008] A bare optical fiber having a first end and a second end;

[0009] A fluorescent head assembly, comprising a fluorescent component, wherein the fluorescent component is fixed to the first end of the bare optical fiber and covers the end surface of the first end;

[0010] A connector, arranged at the second end of the bare optical fiber;

[0011] The optical fiber sheath is only composed of a spiral protective sleeve, which is directly sleeved on the bare optical fiber, one end of the spiral protective sleeve is connected to the fluorescent head assembly, and the other end of the spiral protective sleeve is connected to the connector.

[0012] In some embodiments, the wall thickness of the spiral protective sleeve is not less than 2 mm and not more than 4 mm; and / or,

[0013] The spiral gap width of the spiral protective sleeve is not less than 0.3 mm and not more than 1 mm; and / or,

[0014] The spiral protection sleeve is made of PTFE or PFA.

[0015] In some embodiments, the fluorescent head assembly further includes:

[0016] The tail handle is provided with an insertion through hole;

[0017] An insert core is fixed to one end of the tail handle, the insert core has a core hole connected to the insertion through hole, the first end passes through the insertion through hole and is inserted into the core hole, and the end surface of the first end is located at the opening of the core hole;

[0018] The outer sleeve is sleeved on the insert, and the fluorescent component is accommodated in the outer sleeve and covers the end surface of the first end.

[0019] In some embodiments, the insertion through hole includes a bare fiber jack section, a ferrule jack section, and a countersunk recess section that are connected in sequence, the ferrule is plugged into the ferrule jack section, and the countersunk recess section is plugged into the outer sleeve.

[0020] In some embodiments, the fluorescent fiber optic temperature measuring probe further includes an adhesive, the insertion through hole is filled with the adhesive, the tail handle and the core are bonded together by the adhesive, and the tail handle and the outer sleeve are bonded together by the adhesive.

[0021] In some embodiments, the fluorescent fiber optic temperature measuring probe further comprises:

[0022] A heat shrink tube, wherein the spiral protective sleeve is connected to the tail handle through the heat shrink tube.

[0023] In some embodiments, the tail handle includes a sleeve section, an outer surface of the sleeve section protrudes outward to form a limiting protrusion, and the limiting protrusion presses against the inner wall of the heat shrink tube.

[0024] In some embodiments, the limiting protrusion is an annular protrusion centered on the axis of the tail handle, there are multiple annular protrusions, and the multiple annular protrusions are arranged at intervals along the extension direction of the axis of the tail handle.

[0025] A second aspect of the present application provides a temperature sensor, which includes a demodulation host and a fluorescent fiber optic temperature measurement probe provided by any of the above embodiments, wherein the fluorescent fiber optic temperature measurement probe is connected to the demodulation host.

[0026] A third aspect of the present application provides a temperature measurement system, which includes an edge terminal and the temperature sensor provided in the above embodiment, and the demodulation host is communicatively connected with the edge terminal.

[0027] Beneficial effects of the utility model:

[0028] The fluorescent head assembly of the fluorescent fiber optic temperature measuring probe of the utility model comprises a fluorescent component, which is fixed to the first end of the bare optical fiber and covers the end face of the first end; a connector is arranged at the second end of the bare optical fiber; the optical fiber sheath is composed of only a spiral protective sleeve, which is directly sleeved on the bare optical fiber, one end of the spiral protective sleeve is connected to the fluorescent head assembly, and the other end of the spiral protective sleeve is connected to the connector. The optical fiber sheath has a simple structure, which is conducive to the slim design of the fluorescent fiber optic temperature measuring probe so that it can be used and installed in a small space; moreover, the spiral protective sleeve has its own gap, and when the fluorescent fiber optic temperature measuring probe is immersed in transformer oil, the interior of the spiral protective sleeve can quickly penetrate and fill with transformer oil, and thus no excessive bubbles will be stored, which is conducive to improving the measurement accuracy during the later use process; in addition, the spiral protective sleeve is spirally shaped and has good bending, tensile and compression resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of a fluorescent optical fiber temperature measuring probe provided for an embodiment of the utility model;

[0031] Figure 2 A schematic diagram of a partial disassembly of a fluorescent optical fiber temperature measuring probe provided in an embodiment of the utility model;

[0032] Figure 3 A schematic cross-sectional view of a fluorescent optical fiber temperature measuring probe provided in an embodiment of the present utility model;

[0033] Figure 4 A schematic diagram of a temperature sensor provided in an embodiment of the present utility model;

[0034] Figure 5 A schematic diagram of a temperature measurement system provided for an embodiment of the present utility model.

[0035] Reference numerals:

[0036] 1. Bare optical fiber; 11. First end; 12. Second end;

[0037] 2. Fluorescent head assembly; 21. Fluorescent component; 22. Tail handle; 221. Insertion through hole; 2211. Bare fiber insertion section; 2212. Insert core insertion section; 2213. Countersunk concave section; 222. Socket section; 2221. Limiting protrusion; 23. Insert core; 231. Core hole; 24. Outer sleeve;

[0038] 3. Connector; 4. Spiral protective sleeve; 5. Adhesive; 6. Heat shrink tube; 7. Demodulation host; 8. Edge terminal. Implementation

[0039] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "liquid level", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "second" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "second" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a feature "above" or "below" the second feature may be in direct contact with the second feature, or in indirect contact with the second feature through an intermediate medium. Moreover, a feature "above", "above" and "above" the second feature may mean that the feature is directly above or obliquely above the second feature, or simply indicates that the liquid level of the feature is higher than the second feature. A feature "below", "below" and "below" the second feature may mean that the feature is directly below or obliquely below the second feature, or simply indicates that the liquid level of the feature is lower than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "liquid horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0045] In the related art, the structure of the optical fiber of the fluorescent fiber optic temperature probe is mostly a complex structure wrapped with multiple layers of protective layers, the main purpose of which is to protect the bare optical fiber inside. Specifically, the protective layer includes a loose tube, a water-blocking material, a reinforcing member, an outer sheath, etc. The fluorescent fiber optic temperature probe with this structure is not suitable for the temperature measurement environment of oil-immersed transformers. The main reasons are: on the one hand, although it can better protect the bare optical fiber inside, its protective structure is not airtight. When immersed in transformer oil, a large amount of air is easily stored inside the protective layer. The presence of air can easily lead to problems such as internal discharge, thereby affecting the measurement accuracy; on the other hand, the protective layer has a complex protective structure, a large volume, and occupies a lot of space. It is difficult to achieve a slim and miniaturized design, and it is not convenient to assemble in a small space.

[0046] For the above problems, refer to Figure 1-3The embodiment of the present application provides a fluorescent fiber temperature measuring probe, which includes a bare optical fiber 1, a fluorescent head assembly 2, a connector 3 and an optical fiber sheath. The bare optical fiber 1 has a first end 11 and a second end 12; the fluorescent head assembly 2 includes a fluorescent component 21, which is fixed to the first end 11 of the bare optical fiber 1 and covers the end face of the first end 11; the connector 3 is arranged at the second end 12 of the bare optical fiber 1; the optical fiber sheath is composed of only a spiral protective sleeve 4, which is directly sleeved on the bare optical fiber 1, one end of the spiral protective sleeve 4 is connected to the fluorescent head assembly 2, and the other end of the spiral protective sleeve 4 is connected to the connector 3.

[0047] In the embodiment of the present application, the optical fiber sheath is only composed of a spiral protective sleeve 4, which is directly sleeved on the bare optical fiber 1, one end of the spiral protective sleeve 4 is connected to the fluorescent head assembly 2, and the other end of the spiral protective sleeve 4 is connected to the connector 3. The fluorescent head assembly 2, the connector 3 and the spiral protective sleeve 4 bear the external tensile and compressive stress, and the bare optical fiber 1 is more comprehensively physically protected. The connection between the spiral protective sleeve 4 and the connector 3 can be glued, plugged or sleeved. In addition, the optical fiber sheath has a simple structure, which is conducive to the slim design of the fluorescent optical fiber temperature probe for use and installation in a small space; moreover, the spiral protective sleeve 4 has its own gap. When the fluorescent optical fiber temperature probe is immersed in transformer oil, the interior of the spiral protective sleeve 4 can quickly penetrate and fill the transformer oil, and then there will not be too many bubbles, which is conducive to improving the measurement accuracy during the later use process. In addition, the spiral protective sleeve 4 is spirally shaped and has good bending, stretching and compression resistance, which is convenient for achieving large angle bending in actual use.

[0048] In some embodiments, the ratio of the inner hole diameter of the spiral protective sleeve 4 to the outer diameter of the bare optical fiber 1 is greater than 4, so as to ensure that there is a large space inside for the bare optical fiber 1 to pass through.

[0049] In addition, the bare optical fiber 1 can be a plastic optical fiber or a quartz optical fiber, etc., and the specific material is not limited. Of course, quartz optical fiber can be selected as a priority. The bare optical fiber 1 is the optical fiber structure without the protective cover provided in the related technology. Taking quartz optical fiber as an example, the bare optical fiber 1 can be an optical fiber structure composed of a core, a cladding wrapped outside the core, and a coating layer applied to the cladding, or it can be an optical fiber structure composed of a core and a cladding wrapped outside the core. Among them, the cladding is usually composed of a material with a lower refractive index such as silicon or microsilicon to ensure the propagation of the optical signal in the core.

[0050] For the spiral protective sleeve 4, the size of the spiral angle of the spiral protective sleeve 4 is related to the bending ability, tensile strength and protection ability. The acute angle between the tangent of the spiral line and the straight generatrix of the cylindrical surface passing through the tangent point is called the spiral angle. A smaller spiral angle means that the sleeve is tighter and can withstand greater bending force without breaking; a smaller spiral angle will increase the tensile strength of the sleeve, allowing it to withstand greater tension; the larger the spiral angle, the better the protection of the wires or pipes inside it. A larger spiral angle can increase the thickness and rigidity of the sleeve, thereby providing better protection. In some embodiments, it has been verified that the spiral angle of the spiral protective sleeve 4 can be 28° to 32°, so as to take into account the bending, tensile and protection capabilities of the spiral protective sleeve 4. In addition, the pitch of the spiral protective sleeve 4 can be 3mm to 4mm, the inner hole diameter of the spiral protective sleeve 4 can be 720μm to 800um, and the outer diameter of the bare optical fiber 1 can be 100um to 200um.

[0051] In addition, the thickness of the spiral protective sleeve 4 is related to the pressure resistance. A too thin spiral protective sleeve 4 is difficult to ensure the pressure resistance, and a too thick spiral protective sleeve 4 is not conducive to realizing a small volume design. In some embodiments, the wall thickness of the spiral protective sleeve 4 can be not less than 2 mm and not more than 4 mm.

[0052] The spiral gap width of the spiral protective sleeve 4 is not too large or too small. If it is too large, the bare optical fiber 1 inside will be exposed to the outside, while if it is too small, it will be difficult for the external transformer oil to quickly and fully penetrate and fill the inside of the spiral protective sleeve 4. In some embodiments, the spiral gap width of the spiral protective sleeve 4 is not less than 0.3 mm and not more than 1 mm.

[0053] In some embodiments, the spiral protective sleeve 4 is made of PTFE or PFA. PFA is the abbreviation of perfluoroalkoxy. PFA has a low friction coefficient and excellent non-stick properties. It is a very flexible polymer with high resistance to stress cracking and can resist almost all solvents and chemicals. Polytetrafluoroethylene PTFE, full name polytetrafluoroethylene, PTFE is a polymer compound formed by polymerization of tetrafluoroethylene, with excellent chemical stability, corrosion resistance, sealing, high lubricity and non-stickiness, electrical insulation and good anti-aging resistance.

[0054] In some embodiments, reference Figure 1-3, the fluorescent head assembly 2 also includes a tail handle 22, a core 23 and an outer sleeve 24. The tail handle 22 is provided with an insertion through hole 221; the core 23 is fixed to one end of the tail handle 22, and the core 23 has a core hole 231 connected to the insertion through hole 221. The first end 11 passes through the insertion through hole 221 and is inserted into the core hole 231, and the end face of the first end 11 is located at the opening of the core hole 231; the outer sleeve 24 is sleeved on the core 23, and the fluorescent member 21 is accommodated in the outer sleeve 24 and covers the end face of the first end 11. The end face of the first end 11 is located at the opening of the core hole 231, which means that the end face of the first end 11 is just flush with the plane where the opening of the core hole 231 is located, or the end face of the first end 11 slightly protrudes from the opening of the core hole 231.

[0055] In the manufacturing process of the fluorescent fiber temperature probe, it is usually necessary to first pass the bare optical fiber 1 through the tail handle 22 and insert the ferrule 23, and then fix the bare optical fiber 1 to the tail handle 22 and the ferrule 23, usually by glue sealing; then, the end face of the first end 11 needs to be polished to ensure that the end face of the first end 11 has a high degree of flatness. Therefore, the end face of the first end 11 needs to be able to be polished, and the bare optical fiber 1 will not be damaged during the polishing process. Therefore, before the polishing process, the length of the first end 11 extending out of the core hole 231 should not be too long. Finally, after polishing, the end face of the first end 11 is located at the opening of the core hole 231 and is covered by the fluorescent component 21.

[0056] In some embodiments, reference Figure 1-3 The insertion through hole 221 includes a bare fiber jack section 2211, a ferrule jack section 2212 and a countersunk recess section 2213 which are connected in sequence. The ferrule 23 is plugged into the ferrule jack section 2212, and the countersunk recess section 2213 is plugged into the outer sleeve 24. Therefore, some forces of the ferrule 23 and the outer sleeve 24 can be transmitted to the tail handle 22, thereby improving the stability and reliability of the structure.

[0057] In some embodiments, reference Figure 1-3 The fluorescent fiber temperature probe also includes adhesive 5, and the insertion through hole 221 is filled with adhesive 5, thereby further fixing the position of the bare optical fiber 1, and the tail handle 22 is bonded to the core 23 by the adhesive 5, and the tail handle 22 is bonded to the outer sleeve 24 by the adhesive 5, so that some forces of the core 23 and the outer sleeve 24 can be transmitted to the tail handle 22, thereby improving the stability and reliability of the structure. In some embodiments, the core 23 and the outer sleeve 24 are respectively plugged with the tail handle 22 on the one hand, and the adhesive 5 is added at the plug-in position to achieve bonding, which can further increase the stability and reliability and is not easy to be damaged.

[0058] In some embodiments, reference Figure 1-3The fluorescent optical fiber temperature measuring probe further includes a heat shrink tube 6, through which the spiral protective sleeve 4 is connected to the tail handle 22. The heat shrink tube 6 fixes the relative position of the spiral protective sleeve 4 and the tail handle 22, and at the same time, various forces on one end of the spiral protective sleeve 4 connected to the tail handle 22 can be directly transmitted to the tail handle 22, so as to better protect the bare optical fiber 1 inside.

[0059] In some embodiments, reference Figure 1-3 The tail handle 22 includes a sleeve section 222, and the outer surface of the sleeve section 222 bulges outward to form a limiting protrusion 2221. The limiting protrusion 2221 presses against the inner wall of the heat shrink tube 6, which can improve the stability and reliability of the connection.

[0060] In some embodiments, reference Figure 1-3 The limiting protrusion 2221 is an annular protrusion centered on the axis of the tail handle 22. There are multiple annular protrusions, and the multiple annular protrusions are arranged at intervals along the extending direction of the axis of the tail handle 22 to further improve the stability and reliability of the connection.

[0061] In addition, reference Figure 4 The embodiment of the present application also provides a temperature sensor, which includes a demodulation host 7 and a fluorescent fiber optic temperature measuring probe provided by any of the above embodiments, and the fluorescent fiber optic temperature measuring probe is connected to the demodulation host 7.

[0062] In addition, reference Figure 5 The embodiment of the present application further provides a temperature measurement system, which includes an edge terminal 8 and the temperature sensor provided in the above embodiment, and the demodulation host 7 is communicatively connected with the edge terminal 8.

[0063] Finally, it should be noted that the various technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. A fluorescent optical fiber temperature measuring probe, characterized in that: include: A bare optical fiber (1) having a first end (11) and a second end (12); A fluorescent head assembly (2), comprising a fluorescent component (21), wherein the fluorescent component (21) is fixed to the first end (11) of the bare optical fiber (1) and covers the end surface of the first end (11); A connector (3) arranged at the second end (12) of the bare optical fiber (1); The optical fiber sheath is composed only of a spiral protective sleeve (4), wherein the spiral protective sleeve (4) is directly sleeved on the bare optical fiber (1), one end of the spiral protective sleeve (4) is connected to the fluorescent head assembly (2), and the other end of the spiral protective sleeve (4) is connected to the connector (3).

2. The fluorescent optical fiber temperature measuring probe according to claim 1, characterized in that: The wall thickness of the spiral protective sleeve (4) is not less than 2 mm and not more than 4 mm; and / or, The spiral gap width of the spiral protective sleeve (4) is not less than 0.3 mm and not more than 1 mm; and / or, The spiral protective sleeve (4) is made of PTFE or PFA.

3. The fluorescent optical fiber temperature measuring probe according to claim 1, characterized in that: The fluorescent head assembly (2) further comprises: The tail handle (22) is provided with an insertion through hole (221); An insert (23) is fixed to one end of the tail handle (22), the insert (23) having a core hole (231) communicating with the insertion through hole (221), the first end (11) passing through the insertion through hole (221) and inserted into the core hole (231), and the end surface of the first end (11) is located at the opening of the core hole (231); An outer sleeve (24) is sleeved on the insert (23); the fluorescent element (21) is accommodated in the outer sleeve (24) and covers the end surface of the first end (11).

4. The fluorescent optical fiber temperature measuring probe according to claim 3, characterized in that: The insertion through hole (221) comprises a bare fiber insertion hole section (2211), a core insertion hole section (2212) and a countersunk hole recess section (2213) which are connected in sequence; the core insertion hole (23) is plugged into and matched with the core insertion hole section (2212), and the countersunk hole recess section (2213) is plugged into and matched with the outer sleeve (24).

5. The fluorescent optical fiber temperature measuring probe according to claim 3, characterized in that: The fluorescent optical fiber temperature measuring probe further comprises an adhesive (5), the insertion through hole (221) is filled with the adhesive (5), the tail handle (22) and the insert core (23) are bonded together by the adhesive (5), and the tail handle (22) and the outer sleeve (24) are bonded together by the adhesive (5).

6. The fluorescent optical fiber temperature measuring probe according to any one of claims 3 to 5, characterized in that: Also includes: A heat shrink tube (6), wherein the spiral protective sleeve (4) is connected to the tail handle (22) via the heat shrink tube (6).

7. The fluorescent optical fiber temperature measuring probe according to claim 6, characterized in that: The tail handle (22) comprises a sleeve section (222), the outer surface of the sleeve section (222) convexly forms a limiting protrusion (2221), and the limiting protrusion (2221) is pressed against the inner wall of the heat shrink tube (6).

8. The fluorescent optical fiber temperature measuring probe according to claim 7, characterized in that: The limiting protrusion (2221) is an annular protrusion centered on the axis of the tail handle (22), and there are a plurality of the annular protrusions, which are arranged at intervals along the extension direction of the axis of the tail handle (22).

9. A temperature sensor, characterized in that: It comprises a demodulation host (7) and the fluorescent optical fiber temperature measuring probe according to any one of claims 1 to 8, wherein the fluorescent optical fiber temperature measuring probe is connected to the demodulation host (7).

10. A temperature measurement system, characterized in that: It comprises an edge terminal (8) and the temperature sensor according to claim 9, wherein the demodulation host (7) is communicatively connected to the edge terminal (8).

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