Replaceable wind driven generator blade temperature sensor

Abstract

The utility model discloses a replaceable wind driven generator blade temperature sensor, which comprises a sensing body, a sensor and a sealing plug, the sensing body is used for fixing the sensor on the surface of a fan blade, the sensor is used for measuring the temperature of the fan blade, the sensing body comprises a lower gasket, an upper gasket and a penetration pipe, the lower gasket is fixed on the surface of the fan blade, and the upper gasket is fixed on the surface of the fan blade. The upper gasket is fixed on one side of the lower gasket, the penetrating pipe is connected with the lower gasket and the upper gasket through clamping structures, and a large-diameter hole is formed in one end, far away from the upper gasket, of the penetrating pipe. The sensor and the sensing body are detachably installed and can be replaced as required, the sealing plug is used for sealing the interior of the sensing body when the sensing body is not provided with the sensor, so that the interior of the device is not affected by the outside, fixing and replacing of the temperature sensor are achieved, and sealing of the device is achieved through mutual matching and limiting of component appearances.

Description

Technical Field

[0001] The utility model relates to the technical field of fan blade temperature measurement, in particular to a replaceable wind generator blade temperature sensor. Background Art

[0002] Wind power generation is a clean and renewable way of generating electricity by using the energy generated by the natural movement of air. my country is rich in wind energy resources, and the wind power industry is also in a state of continuous development. With the increase in wind power installations, some problems in the power generation process have also become prominent. Most wind power generation areas are located in relatively cold areas, so from November to February and March of the following year, these areas often experience a lot of fog and freezing rain. In such an environment, the surface of the wind turbine blades is very easy to freeze, resulting in an increase in the unbalanced load of the unit, which brings about a series of hazards such as reduced life of wind turbine components and reduced power generation efficiency.

[0003] Therefore, the fan blades are often equipped with heating membranes to prevent ice from forming on their surfaces. In order to accurately know when to turn on the heating membranes, it is often necessary to monitor the temperature of the fan blades. However, the fan blades are installed at high locations and are long, often tens or hundreds of meters in the air. The use of traditional electrical temperature sensors is prone to lightning hazards, so optical fiber temperature sensors are often used for temperature monitoring.

[0004] At present, the wind blade optical fiber temperature sensors on the market are all fixed, the sensor is fixed under the heating film cloth, the optical fiber is led out through the reserved hole on the heating film cloth to measure the temperature of the wind blade; once the sensor is damaged, it is almost impossible to replace it. If the temperature measurement needs to be continued, the temperature sensor can only be re-arranged, which brings a huge amount of engineering. Therefore, it is necessary to develop a wind turbine blade temperature sensor that is easy to install on the wind blade and can be replaced. Utility Model Content

[0005] 1. Technical problems to be solved by the utility model

[0006] In view of the defects in the above-mentioned background technology, the purpose of the utility model is to provide a replaceable wind turbine blade temperature sensor, which is fixed on the wind blade through a sensor body. The sensor and the sensor body are detachably installed, which is convenient for fixing and replacing the temperature sensor, easy to operate and reduces workload.

[0007] 2. Technical solution

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A replaceable wind turbine blade temperature sensor comprises a sensing body and a sensor, wherein the sensing body is used to fix the sensor on the surface of the wind blade, and the sensor is used to measure the temperature of the wind blade;

[0010] The sensor body comprises a lower gasket, an upper gasket and a penetration tube, wherein the lower gasket is fixed on the surface of the wind blade, the upper gasket is fixed on one side of the lower gasket, the penetration tube is connected to the lower gasket and the upper gasket through a clamping structure, a large-diameter hole is provided at one end of the penetration tube away from the upper gasket, a step hole is provided on one side of the large-diameter hole and located inside the penetration tube, and a small-diameter blind hole communicating with the step hole is provided inside the penetration tube;

[0011] The sensor includes a combined limit piece, a locking piece, a transition piece and a temperature sensor body. A sensor probe is provided at one end of the temperature sensor body. The temperature sensor body has one end of the sensor probe inserted into a small-aperture blind hole. The combined limit piece, the locking piece and the transition piece are sequentially sleeved on the outside of the temperature sensor body from left to right. One end of the locking piece is connected to the step hole. The combined limit piece is placed inside the step hole for sealing. The transition piece is used to limit the position of the temperature sensor body.

[0012] Preferably, the clamping structure includes a lower rectangular groove opened at the center position of the lower gasket, an upper rectangular groove opened at the center position of the upper gasket, and a clamping groove symmetrically opened at one end of the penetration tube near the upper gasket, the two opposite sides of the lower rectangular groove and the upper rectangular groove are milled arc surfaces, the arc surfaces of the lower rectangular groove and the upper rectangular groove are arranged perpendicular to each other, the end face of the penetration tube near the upper gasket is set as the lower end face, the lower end face of the penetration tube can pass through the upper rectangular groove and the lower rectangular groove, and the lower gasket and the upper gasket are clamped in the clamping groove through the upper rectangular groove and the lower rectangular groove.

[0013] Preferably, the lower gasket, the upper gasket and the penetration tube are fixed by gluing.

[0014] Preferably, the locking member includes a large diameter end, a first step portion arranged on one side of the large diameter end, and a small diameter end arranged on one side of the first step portion, the first step portion can be inserted into the large diameter hole, the outer wall of the small diameter end is provided with an external thread, the inside of the step hole is provided with an internal thread, the small diameter end is threadedly connected to the step hole, the other side of the large diameter end is provided with an opening, and the locking member is provided with a first through hole connected to the opening, and the first through hole is used for the temperature sensor body to pass through.

[0015] Preferably, a first arc surface groove is annularly formed on the outer wall of the first step portion, and a second sealing ring is clamped and fixed in the first arc surface groove.

[0016] Preferably, the combined stopper comprises two sleeves sleeved on the outside of the temperature sensor body and a first sealing ring arranged between the two sleeves, and the first sealing ring is also sleeved on the outside of the temperature sensor body.

[0017] Preferably, the transition piece includes a large diameter cylindrical portion, a small diameter cylindrical portion arranged on one side of the large diameter cylindrical portion, and a corrugated portion arranged on the other side of the large diameter cylindrical portion, the small diameter cylindrical portion can be inserted into the opening, and a second through hole is opened inside the transition piece for the temperature sensor body to pass through.

[0018] Preferably, the sensor further comprises a bellows, which is sleeved on the outside of the temperature sensor body and has one end fixedly clamped on the outside of the corrugated portion of the transition piece.

[0019] Preferably, it also includes a sealing plug, a second step portion is provided on one side of the sealing plug, a threaded head is provided on one side of the second step portion, the threaded head is threadedly connected in the step hole, and the second step portion can be inserted into the large diameter hole.

[0020] Preferably, a second arc surface groove is formed in an annular shape on the outer side of the second step portion, and a third sealing ring is clamped and fixed in the second arc surface groove.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] (1) The utility model is composed of a sensing body, a sensor and a sealing plug. The sensing body includes a lower gasket, an upper gasket and a penetration tube, which are used to fix the device on the wind blade. The sensor includes a combined limiter, a locking member, a transition member, a temperature sensor body and a bellows, which can be replaced as needed. The sealing plug is used to seal the inside of the sensing body when the sensor is not assembled with the sensor, so that the inside of the device is not affected by the outside world. The device fixes and replaces the temperature sensor by means of the threaded cooperation between the penetration tube and the locking member, and the sealing of the device is achieved by means of the mutual cooperation of the component shapes to limit the position.

[0024] (2) When the sensor and the sensor body are assembled, the temperature sensor body will not rotate with the rotation of the locking member, thereby preventing the optical cable at the rear section of the temperature sensor from becoming tangled or entangled due to rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a replaceable wind turbine blade temperature sensor;

[0026] Figure 2 This is a schematic diagram of the sensor body split structure;

[0027] Figure 3 is a schematic diagram of the lower gasket structure;

[0028] Figure 4 Schematic diagram of the upper gasket structure;

[0029] Figure 5It is a schematic diagram of the structure of the penetration pipe part;

[0030] Figure 6 It is a schematic diagram of the structure of the penetration pipe from a top view;

[0031] Figure 7 for Figure 6 AA direction profile in;

[0032] Figure 8 This is a schematic diagram of the disassembled structure of a replaceable wind turbine blade temperature sensor;

[0033] Fig. 9 It is a cross-sectional view of a replaceable wind turbine blade temperature sensor;

[0034] Fig.10 It is a schematic diagram of the assembly structure of the sealing plug and the sensor body;

[0035] Fig.11 It is a schematic diagram of the sealing plug structure.

[0036] In the figure: A1, sensor body; A2, sensor;

[0037] 1. Lower gasket; 101. Lower rectangular groove;

[0038] 2. Upper gasket; 201. Upper rectangular groove;

[0039] 3. Insertion tube; 301. Large diameter hole; 302. Small diameter blind hole; 303. Snap-in groove; 304. Lower end surface; 305. Step hole;

[0040] 4. Combined stopper; 401. Sleeve; 402. First sealing ring;

[0041] 5. Locking member; 501. Large diameter end; 502. First step portion; 503. Small diameter end; 504. First arc surface groove; 505. First through hole; 506. Opening;

[0042] 6. transition piece; 601. small diameter cylindrical portion; 602. large diameter cylindrical portion; 603. corrugated portion; 604. second through hole;

[0043] 7. Temperature sensor body; 701. Sensor probe;

[0044] 8. Bellows;

[0045] 9. Sealing plug; 901. Second step portion; 902. Threaded head; 903. Second arc surface groove. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0047] Example:

[0048] See also Figure 1-Figure 11 This embodiment provides a replaceable wind turbine blade temperature sensor, including a sensor body A1 and a sensor A2. The sensor body A1 is used to fix the sensor A2 on the surface of the wind blade, and the sensor A2 is used to measure the temperature of the wind blade.

[0049] In this embodiment, if Figure 1 , Figure 2 and Fig. 9 As shown, the sensor body A1 includes a lower gasket 1, an upper gasket 2 and a penetration tube 3. The lower gasket 1 is fixed on the surface of the wind blade, and the upper gasket 2 is fixed on one side of the lower gasket 1. The lower gasket 1 is slightly larger than the upper gasket 2. The penetration tube 3 is connected to the lower gasket 1 and the upper gasket 2 through a clamping structure. A large-diameter hole 301 is provided at one end of the penetration tube 3 away from the upper gasket 2, and a step hole 305 is provided on one side of the large-diameter hole 301 in the penetration tube 3. A small-diameter blind hole 302 communicating with the step hole 305 is provided inside the penetration tube 3.

[0050] In this embodiment, if Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the clamping structure includes a lower rectangular groove 101 opened at the center of the lower gasket 1, an upper rectangular groove 201 opened at the center of the upper gasket 2, and a clamping groove 303 symmetrically opened at one end of the penetration tube 3 close to the upper gasket 2. The clamping groove 303 is an arc-shaped groove, and the arc surface is set at a certain angle to facilitate the cooperation between the penetration tube 3 and the lower gasket 1 and the upper gasket 2. The two opposite sides of the lower rectangular groove 101 and the upper rectangular groove 201 are milled arc surfaces. The arc surfaces of the upper rectangular groove 201 are arranged perpendicular to each other, and the end face of the penetration tube 3 close to the upper gasket 2 is set as the lower end face 304, and the shape of the lower end face 304 matches the upper rectangular groove 201 of the upper gasket 2. The lower end face 304 of the penetration tube 3 can pass through the upper rectangular groove 201 and the lower rectangular groove 101, and the lower gasket 1 and the upper gasket 2 are clamped in the clamping groove 303 through the upper rectangular groove 201 and the lower rectangular groove 101, wherein the lower gasket 1, the upper gasket 2 and the penetration tube 3 are fixed by gluing.

[0051] When assembling the sensor body A1, first align the upper rectangular groove 201 of the upper gasket 2 with the lower end surface 304 of the penetration tube 3 and insert it into the snap-in groove 303, and then rotate 90° along the arc surface of the snap-in groove 303. At this time, the penetration tube 3 cannot escape from the upper gasket 2, but can still rotate relatively; thereafter, align the lower rectangular groove 101 of the lower gasket 1 with the lower end surface 304 of the penetration tube 3 and insert it into the snap-in groove 303, and also rotate 90° along the arc surface of the snap-in groove 303. At this time, through the snap-in groove 303, the lower rectangular groove 101 and the upper rectangular groove 201 are engaged with each other, so that the penetration tube 3 cannot escape from the lower gasket 1 and the upper gasket 2, nor can it rotate relatively. Finally, glue is injected along the joint surface of the lower gasket 1, the upper gasket 2 and the penetration tube 3, and the lower gasket 1 and the upper gasket 2 are fixed into one by gluing, thereby completing the pre-assembly of the sensor body A1.

[0052] In this embodiment, if Figure 8 As shown, the sensor A2 includes a combined limit member 4, a locking member 5, a transition member 6 and a temperature sensor body 7. A sensor probe 701 is provided at one end of the temperature sensor body 7. The temperature sensor body 7 has one end of the sensor probe 701 inserted into the small-aperture blind hole 302. The combined limit member 4, the locking member 5 and the transition member 6 are sequentially sleeved on the outside of the temperature sensor body 7 from left to right. One end of the locking member 5 is connected to the step hole 305. The combined limit member 4 is placed inside the step hole 305 for sealing. The transition member 6 is used to limit the position of the temperature sensor body 7. The front end of the temperature sensor body 7 is a hard, insulating, temperature-resistant sensor probe 701 for contact temperature measurement. The packaging material can be selected from epoxy resin, glass fiber, ceramic, glass, temperature-resistant fluorine material and other materials. The length of the temperature sensor body 7 is set as required, and the other end can use an optical fiber connector to connect other devices.

[0053] In this embodiment, if Figure 8 and Fig. 9 As shown, the locking member 5 includes a large diameter end 501, a first step portion 502 arranged on one side of the large diameter end 501, and a small diameter end 503 arranged on one side of the first step portion 502. The large diameter end 501, the first step portion 502 and the small diameter end 503 are integrally formed, the first step portion 502 can be inserted into the large diameter hole 301, the outer wall of the small diameter end 503 is provided with an external thread, the inside of the step hole 305 is provided with an internal thread, the small diameter end 503 is threadedly connected to the step hole 305, and an opening 506 is provided on the other side of the large diameter end 501. A first through hole 505 communicating with the opening 506 is provided inside the locking member 5, and the first through hole 505 is used for the temperature sensor body 7 to pass through. The temperature sensor body 7 and the first through hole 505 are clearance-matched. The locking member 5 is used to connect and fix the temperature sensor body 7 in the penetration tube 3, so that the sensor A2 and the sensor body A1 can be detachably installed through a threaded connection, and can be replaced as needed, thereby realizing the sensor replaceable function.

[0054] In this embodiment, if Figure 8 and Fig. 9 As shown, the outer wall of the large diameter end 501 is provided with anti-slip knurling, and the outer wall of the first step portion 502 is provided with a first arc surface groove 504 in an annular manner. A second sealing ring is clamped and fixed in the first arc surface groove 504. When the locking member 5 is connected to the penetration tube 3, the large diameter end 501 is placed in the large diameter hole 301 for limiting the position, and the second sealing ring is used to improve the sealing of the connection between the locking member 5 and the penetration tube 3.

[0055] In this embodiment, if Figure 8 and Fig. 9 As shown, the combined limiting member 4 includes two sleeves 401 sleeved on the outside of the temperature sensor body 7 and a first sealing ring 402 arranged between the two sleeves 401. The first sealing ring 402 is also sleeved on the outside of the temperature sensor body 7. The two sleeves 401 are used together for limiting, and the sealing ring 402 plays a sealing role, further improving the sealing effect.

[0056] In this embodiment, if Figure 8 and Fig. 9 As shown, the transition piece 6 includes a large diameter cylindrical portion 602, a small diameter cylindrical portion 601 arranged on one side of the large diameter cylindrical portion 602, and a corrugated portion 603 arranged on the other side of the large diameter cylindrical portion 602. The small diameter cylindrical portion 601 can be inserted into the opening 506. A second through hole 604 for the temperature sensor body 7 to pass through is provided inside the transition piece 6. The temperature sensor 7 and the second through hole 604 of the large diameter cylindrical portion 602 and the corrugated portion 603 of the transition piece 6 are interference fit, so that the temperature sensor body 7 cannot be displaced and rotated relative to the transition piece 6. The small diameter cylindrical portion 601 of the transition piece and the opening 506 of the locking piece are clearance fit. The small diameter cylindrical portion 601 of the transition piece 6 and the opening 506 of the locking piece 5 are clearance fit. The fastener 5 is threadedly assembled with the penetration tube 3. When the locking member 5 is rotated, the temperature sensor body 7 will not rotate with the locking member 5, thereby preventing the optical cable at the rear section of the temperature sensor from getting knotted or entangled due to rotation. After the locking member 5 is assembled with the penetration tube 3, the locking member 5 and the transition member 6 are glued together. At this time, the sensor A2 has been combined into a whole. The large-diameter cylindrical portion 602 of the transition member 6 covers the opening 506 of the locking member 5 to prevent external pollution from entering the internal space of the sensor from this gap, thereby protecting the temperature sensor body 7. Components with matching sizes are used to make the entire device completely sealed and tightly combined, so that the temperature sensor body 7 will not move or rotate inside the device.

[0057] In this embodiment, if Figure 1 and Fig. 9As shown, the sensor A2 also includes a bellows 8, which is sleeved on the outside of the temperature sensor body 7, and one end of which is fixedly connected to the outside of the corrugated portion 603 of the transition piece 6. The setting of the corrugated portion 603 facilitates fixing the position of the bellows 8. The bellows 8 is used to protect the temperature sensor body 7, and the length of the bellows 8 can be set as required.

[0058] When assembling sensor A2, first insert the small-diameter cylindrical portion 601 of the transition piece 6 into the opening 506 of the locking piece 5, then insert the temperature sensor body 7 into the combined device from the second through hole 604 of the transition piece 6, and the combined limiter 4 is sleeved on the temperature sensor body 7 from the sensor probe 701 end. Finally, one end of the bellows 8 is sleeved on the corrugated portion 603 of the transition piece 6 to complete the pre-assembly of sensor A2.

[0059] In this embodiment, if Figure 1 , Fig.10 and Fig.11 As shown, it also includes a sealing plug 9, a second step portion 901 is provided on one side of the sealing plug 9, a threaded head 902 is provided on one side of the second step portion 901, the threaded head 902 is threadedly connected to the step hole 305, the second step portion 901 can be inserted into the large diameter hole 301, and a second arc surface groove 903 is annularly opened on the outer side of the second step portion 901, and a third sealing ring is fixed in the second arc surface groove 903. In order to prevent the laying project of devices such as fan blade heating membrane cloth from contaminating the inside of the sensor body, the sealing plug 9 can be used to seal the sensor body A, and the threaded head 902 of the sealing plug 9 is connected to the step hole 305 of the penetration tube 3 to quickly connect the sealing plug 9 to the penetration tube 3. The step portion 901 of the sealing plug 9 is placed in the large diameter hole 301, and the sealing performance is improved by the third sealing ring. The sealing plug 9 can use anti-glue material to seal the opening of the penetration tube 3.

[0060] Working principle: When in use, first assemble the sensor body A1, fix the sensor body A1 on the surface of the fan blade, penetrate the tube 3 through the reserved hole of the fan blade heating membrane cloth, and use the sealing plug 9 to seal the sensor body. After the heating membrane cloth and other facilities of the fan blade are laid out, remove the sealing plug 9, take out the pre-assembled sensor A2, and extend the sensor probe 701 end of the temperature sensor body 7 from the large diameter hole 301 of the penetration tube. The sensor probe 701 contacts the inner bottom surface of the penetration tube 3. During this process, the combined limiter 4 is sleeved on the outside of the temperature sensor body 7 to limit the locking member 5 and seal the penetration tube 3. The locking member 5 is threadedly matched with the penetration tube 3 in the space of the small-diameter blind hole 302, and is rotated and screwed until the bottom surface of the small-diameter end 503 contacts one end of the combined stopper 4. The first step portion 502 of the locking member 5 is matched with the large-diameter hole 301 of the penetration tube 3. The sealing ring 507 sleeved on the first step portion 502 seals the step hole 305 space of the penetration tube 3, thereby realizing double sealing of the space inside the penetration tube 3, preventing the external environment from polluting the sensor probe 701 in the penetration tube 3. The sensor probe 701 is indirectly in contact with the surface of the fan blade to be measured through the penetration tube 3, the lower gasket 1 and the upper gasket 2, so as to monitor the temperature of the fan blade.

[0061] When the sensor needs to be replaced, loosen the threaded fit between the locking piece 5 and the penetration tube 3, remove the sensor A2 as a whole, replace it with a new sensor and repeat the above installation operation.

[0062] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. Replaceable wind turbine blade temperature sensor, characterized in that: It comprises a sensing body (A1) and a sensor (A2), wherein the sensing body (A1) is used to fix the sensor (A2) on the surface of a wind blade, and the sensor (A2) is used to measure the temperature of the wind blade; The sensor body (A1) comprises a lower gasket (1), an upper gasket (2) and a penetration tube (3); the lower gasket (1) is fixed on the surface of the wind blade; the upper gasket (2) is fixed on one side of the lower gasket (1); the penetration tube (3) is connected to the lower gasket (1) and the upper gasket (2) via a clamping structure; a large-diameter hole (301) is provided at one end of the penetration tube (3) away from the upper gasket (2); a step hole (305) is provided on one side of the large-diameter hole (301) and is located inside the penetration tube (3); and a small-diameter blind hole (302) communicating with the step hole (305) is provided inside the penetration tube (3); The sensor (A2) comprises a combined limiting component (4), a locking component (5), a transition component (6) and a temperature sensor body (7); a sensor probe (701) is provided at one end of the temperature sensor body (7); one end of the sensor probe (701) of the temperature sensor body (7) is inserted into a small-diameter blind hole (302); the combined limiting component (4), the locking component (5) and the transition component (6) are sequentially sleeved on the outside of the temperature sensor body (7) from left to right; one end of the locking component (5) is connected to the step hole (305); the combined limiting component (4) is placed inside the step hole (305) for sealing; and the transition component (6) is used to limit the position of the temperature sensor body (7).

2. The replaceable wind turbine blade temperature sensor according to claim 1, characterized in that: The clamping structure comprises a lower rectangular groove (101) opened at the center of the lower gasket (1), an upper rectangular groove (201) opened at the center of the upper gasket (2), and a clamping groove (303) symmetrically opened at one end of the penetration tube (3) close to the upper gasket (2); the two opposite sides of the lower rectangular groove (101) and the upper rectangular groove (201) are milled arc surfaces; the arc surfaces of the lower rectangular groove (101) and the upper rectangular groove (201) are arranged perpendicular to each other; the end surface of the penetration tube (3) close to the upper gasket (2) is set as the lower end surface (304); the lower end surface (304) of the penetration tube (3) can pass through the upper rectangular groove (201) and the lower rectangular groove (101); the lower gasket (1) and the upper gasket (2) are clamped in the clamping groove (303) through the upper rectangular groove (201) and the lower rectangular groove (101).

3. The replaceable wind turbine blade temperature sensor according to claim 2 is characterized in that: The lower gasket (1), the upper gasket (2) and the penetration tube (3) are fixed by gluing.

4. The replaceable wind turbine blade temperature sensor according to claim 1, characterized in that: The locking member (5) comprises a large diameter end (501), a first step portion (502) arranged on one side of the large diameter end (501), and a small diameter end (503) arranged on one side of the first step portion (502); the first step portion (502) can be inserted into the large diameter hole (301); an outer wall of the small diameter end (503) is provided with an external thread; an inner portion of the step hole (305) is provided with an internal thread; the small diameter end (503) is threadedly connected to the step hole (305); an opening (506) is provided on the other side of the large diameter end (501); a first through hole (505) communicating with the opening (506) is provided inside the locking member (5); the first through hole (505) is used for allowing the temperature sensor body (7) to pass through.

5. The replaceable wind turbine blade temperature sensor according to claim 4 is characterized in that: A first arc surface groove (504) is annularly provided on the outer wall of the first step portion (502), and a second sealing ring is clamped and fixed in the first arc surface groove (504).

6. The replaceable wind turbine blade temperature sensor according to claim 1, characterized in that: The combined stopper (4) comprises two sleeves (401) sleeved on the outside of the temperature sensor body (7) and a first sealing ring (402) arranged between the two sleeves (401), and the first sealing ring (402) is also sleeved on the outside of the temperature sensor body (7).

7. The replaceable wind turbine blade temperature sensor according to claim 4, characterized in that: The transition piece (6) comprises a large diameter cylindrical portion (602), a small diameter cylindrical portion (601) arranged on one side of the large diameter cylindrical portion (602), and a corrugated portion (603) arranged on the other side of the large diameter cylindrical portion (602); the small diameter cylindrical portion (601) can be inserted into the opening (506); and a second through hole (604) is provided inside the transition piece (6) for the temperature sensor body (7) to pass through.

8. The replaceable wind turbine blade temperature sensor according to claim 7, characterized in that: The sensor (A2) further comprises a bellows (8), which is sleeved on the outside of the temperature sensor body (7) and has one end fixedly clamped on the outside of the corrugated portion (603) of the transition piece (6).

9. The replaceable wind turbine blade temperature sensor according to claim 4, characterized in that: It also includes a sealing plug (9), wherein one side of the sealing plug (9) is provided with a second step portion (901), one side of the second step portion (901) is provided with a threaded head (902), the threaded head (902) is threadedly connected in the step hole (305), and the second step portion (901) can be inserted into the large-diameter hole (301).

10. The replaceable wind turbine blade temperature sensor according to claim 9, characterized in that: A second arc surface groove (903) is formed in an annular manner on the outer side of the second step portion (901), and a third sealing ring is clamped and fixed in the second arc surface groove (903).

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