Fiber bragg grating pressure ring sensor

Abstract

The utility model relates to the technical field of sensors, in particular to a fiber bragg grating pressure ring sensor, which is characterized in that a base part is used for mounting a pressure ring part, the pressure ring part is sleeved on the outer ring of the base part, a plurality of lock holes are arranged on the inner ring of the pressure ring part, a locking part is rotatably arranged in the base part, the locking part comprises a plurality of lock rods and a rotary locking part, when the lock rod rotates to stretch into the lock hole, the pressure ring part cannot slide along the base part, the pressure ring part is fixed to the base part through the locking part, and when the lock rod rotates away from the lock hole, the pressure ring part is pulled upwards, the pressure ring part is taken down from the base part, and then the lock rod is locked. All the lock rods can be simultaneously controlled to be inserted into or separated from the lock holes through the knob, each lock rod does not need to be independently operated, operation is easy, time is saved, working efficiency is improved, the anti-sliding blocks are fixedly arranged in the middles of the lock rods, and when the lock rods completely retract into the sliding holes, the anti-sliding blocks block the sliding hole openings, stop the lock rods from continuing retracting and prevent the lock rods from sliding off from the sliding holes.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a fiber grating pressure ring sensor. Background Art

[0002] The fiber grating pressure ring sensor is a sensor that uses fiber grating technology to measure pressure. The core of the technology is the grating structure embedded in the optical fiber, which can reflect and interfere with the optical signal. When the external pressure changes, the strain of the optical fiber will change, which will change the fiber characteristics of the grating, which is specifically manifested as changes in the central wavelength and resonance peak width of the grating. By measuring the changes in these spectral parameters, the pressure can be reflected.

[0003] When in use, the fiber grating pressure ring sensor is sleeved on the central axis of the base and fixed with a locking mechanism. Traditional locking mechanisms are independent of each other and need to be controlled separately, which is cumbersome to operate, wastes time and reduces work efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a fiber grating pressure ring sensor to solve the problem that the locking mechanisms proposed in the related art are independent of each other and need to be controlled separately.

[0005] In order to achieve the above object, according to one aspect of the utility model, a fiber Bragg grating pressure ring sensor is provided, comprising: a base portion, the base portion is used to install a pressure ring portion;

[0006] A pressure ring part, wherein the pressure ring part is sleeved on the outer ring of the base part, and the inner ring of the pressure ring part is provided with a plurality of locking holes;

[0007] The locking part is rotatably arranged in the base part, and the locking part includes a plurality of locking rods. The locking part is rotated to drive the locking rods to rotate together. When the locking rods are rotated and extended into the locking holes, the pressure ring part cannot slide along the base part. The locking part fixes the pressure ring part on the base part. When the locking rods are rotated away from the locking holes, the pressure ring part is pulled upward to be removed from the base part.

[0008] Furthermore, the base portion includes a plate column group and a slot hole group, the plate column group includes a bottom plate, a middle column and a plurality of guide columns, and the slot hole group includes a center hole, a circular groove and a plurality of sliding holes.

[0009] Furthermore, the center column is fixedly arranged at the middle part of the upper surface of the base plate, and the guide columns are all fixedly arranged at the outer ring of the center column.

[0010] Furthermore, the central hole is arranged in the middle of the center column, the circular groove is arranged horizontally at the lower part of the inside of the center column, and the sliding hole is arranged through the side wall of the center column and is connected with the circular groove.

[0011] Furthermore, the pressure ring portion also includes a pressure ring and a plurality of guide grooves, the pressure ring is ring-shaped, the guide grooves are vertically arranged on the inner side of the pressure ring, and the locking holes are arranged on the inner side of the pressure ring.

[0012] Furthermore, the locking portion further comprises a rotating column group and a rotating disk group, wherein the rotating column group comprises a rotating knob, a plurality of convex strips and a connecting rod, and the rotating disk group comprises a connecting disk and a plurality of springs.

[0013] Furthermore, the convex strips are all fixedly arranged on the outer ring of the knob, the top end of the connecting rod is fixedly connected to the knob, and the bottom end is fixedly connected to the connecting disk, the springs are all arranged on the outer ring of the connecting disk and fixedly connected to the connecting disk, the locking rods are all fixedly arranged on the ends of the springs, the locking rods and the springs at their ends are on the same straight line, and the angle between the spring and the connecting disk is 45°~60°.

[0014] Furthermore, the locking rod is slidably connected to the sliding hole, the connecting rod is located in the central hole and is rotatably connected to the middle column, and the connecting plate is located in the circular groove and is rotatably connected to the middle column.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the locking part is rotated to drive the locking rod to rotate together, and when the locking rod is rotated and extended into the locking hole, the pressure ring part cannot slide along the base part, and the locking part fixes the pressure ring part on the base part. When the locking rod is rotated away from the locking hole, the pressure ring part is pulled upward to remove the pressure ring part from the base part. All the locking rods can be controlled to insert or leave the locking hole at the same time by turning the knob, and there is no need to operate each locking rod individually. The operation is simple, time is saved, and work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the utility model;

[0017] Figure 2 This is a cross-sectional view of the utility model;

[0018] Figure 3 This is a cross-sectional view of the base portion of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the pressure ring of the utility model;

[0020] Figure 5 This is a schematic diagram of the locking structure of the utility model.

[0021] Illustration Description:

[0022] 1. Base; 11. Bottom plate; 12. Middle column; 13. Center hole; 14. Round groove; 15. Sliding hole; 16. Guide column;

[0023] 2. pressure ring; 21. pressure ring; 22. guide groove; 23. lock hole;

[0024] 3. Locking part; 31. Knob; 32. Raised strip; 33. Connecting rod; 34. Connecting plate; 35. Spring; 36. Locking rod. DETAILED DESCRIPTION

[0025] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0026] See also Figures 1 to 5 , This embodiment provides a fiber Bragg grating pressure ring sensor, comprising: a base portion 1, the base portion 1 is used to install a pressure ring portion 2;

[0027] The pressure ring 2 is sleeved on the outer ring of the base 1, and the inner ring of the pressure ring 2 is provided with a plurality of locking holes 23;

[0028] The locking portion 3 is rotatably disposed in the base portion 1. The locking portion 3 includes a plurality of locking rods 36. The locking portion 3 is rotated to drive the locking rods 36 to rotate together. When the locking rods 36 are rotated and extended into the locking holes 23, the pressure ring portion 2 cannot slide along the base portion 1. The locking portion 3 fixes the pressure ring portion 2 on the base portion 1. When the locking rods 36 are rotated away from the locking holes 23, the pressure ring portion 2 is pulled upward to remove the pressure ring portion 2 from the base portion 1.

[0029] A stop block is fixedly provided at the middle of the locking rod 36. When the locking rod 36 is fully retracted into the sliding hole 15, the stop block blocks the opening of the sliding hole 15, preventing the locking rod 36 from further retracting and sliding out of the sliding hole 15. When there is no external force, the locking rod 36 extends out of the sliding hole 15 and is inserted into the locking hole 23.

[0030] The base portion 1 includes a plate column group and a slot hole group. The plate column group includes a bottom plate 11 , a middle column 12 and a plurality of guide columns 16 . The slot hole group includes a center hole 13 , a circular groove 14 and a plurality of sliding holes 15 .

[0031] The middle column 12 is fixedly disposed at the middle portion of the upper surface of the bottom plate 11 , and the guide columns 16 are all fixedly disposed at the outer circle of the middle column 12 .

[0032] The center hole 13 is arranged in the middle of the center column 12, the circular groove 14 is arranged horizontally at the lower inside of the center column 12, the sliding hole 15 passes through the side wall of the center column 12 and is connected to the circular groove 14, the sliding hole 15 is inclined, and the inclination angle and direction are the same as the inclination angle and direction of the spring 35.

[0033] The pressure ring portion 2 also includes a pressure ring 21 and a plurality of guide grooves 22. The pressure ring 21 is ring-shaped. A fiber grating pressure sensor is arranged inside the pressure ring 21 for measuring the ambient pressure. The guide grooves 22 are arranged vertically on the inner side of the pressure ring 21, and the lock holes 23 are arranged on the inner side of the pressure ring 21.

[0034] When the guide groove 22 is aligned with the guide column 16, when the pressure ring part 2 is slid downward along the middle column 12 to be installed on the base part 1, the locking holes 23 are all aligned with the sliding holes 15, and the locking part 3 is rotated. All locking rods 36 can extend into the corresponding locking holes 23 along the sliding holes 15 to fix the pressure ring part 2 on the base part 1.

[0035] The locking portion 3 further includes a rotating column group and a rotating disk group. The rotating column group includes a knob 31 , a plurality of convex strips 32 and a connecting rod 33 , and the rotating disk group includes a connecting disk 34 and a plurality of springs 35 .

[0036] The convex strips 32 are all fixedly arranged on the outer ring of the knob 31 to increase the friction of the knob 31 and facilitate turning the knob 31. The top end of the connecting rod 33 is fixedly connected to the knob 31, and the bottom end is fixedly connected to the connecting disk 34. The springs 35 are all arranged on the outer ring of the connecting disk 34 and fixedly connected to the connecting disk 34. The locking rods 36 are all fixedly arranged on the ends of the springs 35. The locking rods 36 and the springs 35 at their ends are on the same straight line. The angle between the spring 35 and the connecting disk 34 is 45°~60°, and 50° is preferably selected in this embodiment to facilitate the sliding of the locking rod 36 in the sliding hole 15.

[0037] The locking rod 36 is slidably connected to the sliding hole 15 , the connecting rod 33 is located in the central hole 13 and is rotatably connected to the center column 12 , and the connecting plate 34 is located in the circular groove 14 and is rotatably connected to the center column 12 .

[0038] Pick up the pressure ring 2, align the guide grooves 22 with the guide columns 16, slide the pressure ring 2 downward along the middle column 12, and when the bottom edge of the pressure ring 21 is about to touch the slide hole 15, turn the knob 31 counterclockwise, and the knob 31 drives the connecting plate 34 to rotate through the connecting rod 33. The rotating connecting plate 34 pulls the spring 35 backward, and the spring 35 stretches, pulling the locking rod 36 out of the locking hole 23 and retracting it into the slide hole 15, and continuing to slide the pressure ring 2 downward to place it on the bottom plate 11, at this time, all the locking holes 23 are opposite to the sliding hole 15, the knob 31 is loosened, the spring 35 contracts, the connecting plate 34 is pulled to rotate, and the locking rod 36 is pushed to slide out along the sliding hole 15 and extend into the corresponding locking hole 23, the pressure ring part 2 is fixed on the base part 1, and both are placed in the environment to be tested at the same time to measure the pressure; when the pressure ring part 2 needs to be removed from the base part 1, the knob 31 is turned again, the locking rod 36 is turned into the sliding hole 15, and the pressure ring 21 is lifted up.

[0039] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fiber Bragg grating pressure ring sensor, characterized in that: include: A base portion (1), the base portion (1) being used for mounting the pressure ring portion (2); A pressure ring portion (2), the pressure ring portion (2) being sleeved on the outer ring of the base portion (1), and the inner ring of the pressure ring portion (2) being provided with a plurality of locking holes (23); A locking portion (3), wherein the locking portion (3) is rotatably disposed in the base portion (1), and the locking portion (3) includes a plurality of locking rods (36). The locking portion (3) is rotated to drive the locking rods (36) to rotate together. When the locking rods (36) are rotated and extended into the locking holes (23), the pressure ring portion (2) cannot slide along the base portion (1). The locking portion (3) fixes the pressure ring portion (2) on the base portion (1). When the locking rods (36) are rotated away from the locking holes (23), the pressure ring portion (2) is pulled upward to remove the pressure ring portion (2) from the base portion (1).

2. The fiber Bragg grating pressure ring sensor according to claim 1, characterized in that: The base portion (1) comprises a plate column group and a slot hole group, the plate column group comprises a bottom plate (11), a middle column (12) and a plurality of guide columns (16), and the slot hole group comprises a central hole (13), a circular groove (14) and a plurality of sliding holes (15).

3. The fiber Bragg grating pressure ring sensor according to claim 2, characterized in that: The middle column (12) is fixedly arranged at the middle part of the upper surface of the bottom plate (11), and the guide columns (16) are all fixedly arranged at the outer ring of the middle column (12).

4. The fiber Bragg grating pressure ring sensor according to claim 2, characterized in that: The central hole (13) is arranged in the middle of the central column (12), the circular groove (14) is arranged horizontally at the lower part of the central column (12), and the sliding hole (15) is arranged through the side wall of the central column (12) and is in communication with the circular groove (14).

5. The fiber Bragg grating pressure ring sensor according to claim 1, characterized in that: The pressure ring portion (2) further comprises a pressure ring (21) and a plurality of guide grooves (22); the pressure ring (21) is ring-shaped; the guide grooves (22) are all arranged vertically on the inner side of the pressure ring (21); and the locking holes (23) are all arranged on the inner side of the pressure ring (21).

6. The fiber Bragg grating pressure ring sensor according to claim 2, characterized in that: The locking portion (3) further comprises a rotating column group and a rotating disk group, the rotating column group comprises a rotating knob (31), a plurality of convex strips (32) and a connecting rod (33), and the rotating disk group comprises a connecting disk (34) and a plurality of springs (35).

7. The fiber Bragg grating pressure ring sensor according to claim 6, characterized in that: The convex strips (32) are all fixedly arranged on the outer ring of the knob (31); the top end of the connecting rod (33) is fixedly connected to the knob (31), and the bottom end is fixedly connected to the connecting disk (34); the springs (35) are all arranged on the outer ring of the connecting disk (34) and are fixedly connected to the connecting disk (34); the locking rods (36) are all fixedly arranged on the ends of the springs (35); the locking rods (36) and the springs (35) at their ends are on the same straight line; and the angle between the springs (35) and the connecting disk (34) is 45° to 60°.

8. The fiber Bragg grating pressure ring sensor according to claim 7, characterized in that: The locking rod (36) is slidably connected to the sliding hole (15), the connecting rod (33) is located in the central hole (13) and is rotatably connected to the middle column (12), and the connecting plate (34) is located in the circular groove (14) and is rotatably connected to the middle column (12).

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