Detector and detection method for tritium in water

Abstract

The invention relates to the technical field of detection of tritium in water, and provides an underwater tritium detector and a detection method.The underwater tritium detector comprises a detector box body, a cleaning plate, a cover plate, a sliding connection rod and a motor, an installation cavity is formed in the detector box body, and an optical fiber is installed in the installation cavity; a water outlet hole communicated with the mounting cavity is formed in one side of the detector box body; the cleaning plate is arranged in the detector box body in a sliding mode and is attached to the inner cavity wall of the detector box body, and a through hole for an optical fiber to penetrate through is formed in the cleaning plate. According to the detector for tritium in water, after the cover plate is connected to the detector box body, the sliding connection rod can be connected with the cleaning plate through the insertion connection hole, the sliding connection rod extends to the outer side of the cover plate, and the sliding connection rod slides along the water inlet sliding hole, so that the cleaning plate is conveniently driven to slide in a manner of driving the sliding connection rod to slide through an external motor; therefore, impurities on the surface of the optical fiber can be cleaned conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of tritium detection in water, and in particular to a tritium detector and a detection method for tritium in water. Background Art

[0002] Tritium, a key radionuclide emitted by nuclear facilities, has been increasing annually, leading to an increase in the concentration of tritiated water in environmental water bodies, posing a potential threat to biological and ecological environments. Tritium, a radioactive isotope of hydrogen, emits low-energy beta particles (maximum energy 18.6 keV). Given the radioactive properties of tritium in water, detectors must possess high efficiency and sensitivity to meet the requirements of tritium detection in water. Currently, plastic scintillating fiber array detectors are available that can monitor tritium content in water with high sensitivity.

[0003] The utility model with announcement number CN219456525U proposes a tritium monitoring device, which relates to the technical field of tritium gas measurement. The device includes a box body with a first gas port and a second gas port provided on the top, two disks fixedly mounted on either side of the top of the box body, a first chamber fixedly mounted on the bottom of one disk, a first pipe connected to the first gas port provided on the top of the outer side of the first chamber, and a second pipe connected to the second gas port provided on the bottom, and a second chamber fixedly mounted on the top of the other disk. However, during the monitoring process, the surface of the optical fiber of the existing scintillating fiber array detector will be covered with impurities such as suspended particles. Furthermore, the scintillating fiber array detector needs to be immersed in water for tritium detection. To ensure the transmission efficiency of β particles, the optical fiber array detector needs to be regularly removed and the optical fiber surface cleaned. Removing the optical fiber array detector and cleaning the optical fiber will delay the detection progress for a long time. Therefore, this solution proposes an underwater tritium detector and detection method to solve the above problems. Summary of the Invention

[0004] In view of this, the present invention proposes an underwater tritium detector and detection method to solve the existing technical problem that when cleaning the surface of the optical fiber, the optical fiber array detector needs to be removed and the optical fiber cleaning is performed, which delays the detection progress for a long time.

[0005] The technical solution of the present invention is implemented as follows: The present invention provides an underwater tritium detector, comprising a detector housing, a cleaning plate, a cover plate, a sliding rod and a motor, wherein: An installation cavity is formed inside the detector housing, and the optical fiber is installed inside the installation cavity. A water outlet hole communicating with the installation cavity is opened on one side of the detector housing; A cleaning plate is slidably arranged inside the detector housing and fits in with the inner cavity wall of the detector housing. A through hole for the optical fiber to pass through is provided on the cleaning plate, and a cleaning pad that fits in with the optical fiber is provided inside the through hole. A cover plate is detachably connected to a side of the detector housing away from the water outlet and is used to cover the detector housing. The cover plate is provided with a water inlet sliding hole, and the cleaning plate is provided with a plug hole. The sliding rod passes through the water inlet sliding hole and is plugged into the plug hole. The motor is used to drive the sliding rod to slide along the water inlet sliding hole.

[0006] On the basis of the above technical solution, preferably, it further includes a top frame, wherein, The top frame is fixedly connected to the cover plate, and the sliding rod is slidably arranged on the top frame and slides along the circumference of the top frame.

[0007] On the basis of the above technical solution, preferably, the top frame includes two straight portions and two arc-shaped portions, the two arc-shaped portions are respectively connected to the ends of the two straight portions, and the straight portions and the water inlet slide holes both extend in the length direction of the detector box.

[0008] On the basis of the above technical solution, preferably, the sliding rod is an L-shaped rod, one end of the sliding rod is slidably connected to the top frame, and the end wall of the other end of the sliding rod is an inclined wall.

[0009] On the basis of the above technical solution, preferably, it further includes a driving chain, a pushing frame and a driving gear, wherein, A drive chain is rotatably arranged on the peripheral side of the top frame, and the pushing frame is fixedly connected to the drive chain, and the pushing frame extends to one side of the sliding rod and is used to push the sliding rod to slide along the top frame; The motor is arranged on one side of the detector housing, and the driving gear is fixedly connected to the output shaft of the motor, and the driving gear is meshed with the driving chain.

[0010] On the basis of the above technical solution, preferably, it further comprises a first clamping plate and a second clamping plate, wherein, The first clamping plate and the second clamping plate are both arranged inside the detector box and located at one end of the optical fiber. The second clamping plate is slidably arranged on one side of the first clamping plate. The first clamping plate is provided with a first through-hole for the optical fiber to pass through, and the second clamping plate is provided with a second through-hole for the optical fiber to pass through.

[0011] Based on the above technical solution, preferably, the end of the second clamping plate protrudes from the first clamping plate, a first assembly groove for the second clamping plate to be inserted is provided on the cover plate, and a second assembly groove for the second clamping plate to be inserted is provided on the inner side of the detector box.

[0012] On the basis of the above technical solution, preferably, it further includes a pressing screw, wherein, The compression screw rod is threadedly connected to the cover plate and passes through the first assembly groove to abut against the second clamping plate.

[0013] On the basis of the above technical solution, preferably, a spring is further included, wherein, A spring is arranged inside the second assembly groove and contacts the second clamping plate, and is used for resetting the sliding position of the second clamping plate.

[0014] The present invention also provides a method for detecting tritium in water, comprising the above-mentioned tritium detector in water, and further comprising the following steps: S1, regulating the water flow from the water inlet slide hole and out of the water outlet hole, completing the tritium detection process in the water through optical fiber; S2. Start the motor regularly. At this time, the motor drives the sliding rod to slide along the top frame. When the sliding rod slides to the end of the water inlet sliding hole, the sliding rod slides to the arc portion, slides along the arc portion, and rotates on the inner side of the plug-in hole. When the sliding rod rotates to the straight portion on the other side, it continues to slide in the opposite direction along the water inlet sliding hole, so that the cleaning plate automatically slides back and forth inside the detector box to complete the surface cleaning of the optical fiber.

[0015] The tritium detector and detection method of the present invention have the following advantages over the prior art: (1) By connecting the cover plate to the detector housing, the sliding rod is naturally inserted into the plug hole to complete the connection process with the cleaning plate. When the optical fiber surface needs to be cleaned, the motor is started to drive the sliding rod to move the cleaning plate, and the cleaning process of impurities on the optical fiber surface is completed by the cleaning pad provided on the inner side of the through hole. After the cover plate of the underwater tritium detector of the present application is connected to the detector housing, the sliding rod can be connected to the cleaning plate by inserting the plug hole. By setting the sliding rod to extend to the outside of the cover plate, the sliding rod slides along the water inlet sliding hole. In this way, it is convenient to drive the cleaning plate to slide by driving the sliding rod by the external motor, thereby facilitating the cleaning process of impurities on the optical fiber surface and convenient to use.

[0016] (2) The sliding rod is arranged to slide on the top frame, and the top frame includes two straight parts and an arc-shaped part. In this way, when the sliding rod slides along the straight part, it can slide along the water inlet slide hole synchronously. When the sliding rod slides to the end of the water inlet slide hole, the sliding rod slides to the arc-shaped part, slides along the arc-shaped part, and rotates on the inside of the plug-in hole. When the sliding rod rotates to the straight part on the other side, it continues to slide in the opposite direction along the water inlet slide hole, so that the cleaning plate automatically slides back and forth inside the detector box to improve the surface cleaning effect of the optical fiber and facilitate use.

[0017] (3) By setting a first clamping plate and a second clamping plate slidably set on one side of the first clamping plate, since the optical fiber passes through the first clamping plate and the second clamping plate, the second clamping plate and the first clamping plate can be adjusted in advance to slide before adjusting the cleaning plate to slide. Under the staggered clamping action of the first through-hole and the second through-hole, the end of the optical fiber is clamped. By clamping and fixing the end of the optical fiber, the optical fiber is prevented from being accidentally stressed and causing the end to detach when adjusting the cleaning plate to slide to clean the optical fiber, thereby increasing the connection stability of the optical fiber and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A top perspective view of the tritium detector in water according to the present invention; Figure 2 is a bottom-up perspective view of the underwater tritium detector of the present invention; Figure 3 It is a front view of the water tritium detector of the present invention; Figure 4 The tritium detector in water of the present invention Figure 3 A cross-sectional view of the structure at AA is shown; Figure 5 It is a right side view of the water tritium detector of the present invention; Figure 6 The tritium detector in water of the present invention Figure 5 A cross-sectional view of the structure at position BB is shown; Figure 7 The tritium detector in water of the present invention Figure 6 An enlarged schematic diagram of point C is shown; Figure 8 This is a schematic diagram of the internal structure of the detector housing of the water tritium detector of the present invention; Figure 9 It is a three-dimensional diagram of the detector box of the water tritium detector of the present invention.

[0020] In the figure: 10, optical fiber; 1, detector housing; 11, mounting cavity; 12, water outlet; 13, second assembly slot; 2, cleaning plate; 21, through hole; 22, cleaning pad; 23, plug hole; 3, cover plate; 31, water inlet slide hole; 32, first assembly slot; 41, top frame; 411, straight portion; 412, arc portion; 42, sliding rod; 43, drive chain; 44, pushing frame; 51, motor; 52, drive gear; 61, first clamping plate; 611, first through hole; 62, second clamping plate; 621, second through hole; 71, tightening screw; 72, spring; 73, knob. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 9 As shown, the water tritium detector of the present invention includes a detector housing 1, a cleaning plate 2, a cover plate 3, a sliding rod 42 and a motor 51, wherein an installation cavity 11 is formed inside the detector housing 1, and the optical fiber 10 is installed inside the installation cavity 11, and a water outlet 12 connected to the installation cavity 11 is provided on one side of the detector housing 1; the cleaning plate 2 is slidably arranged inside the detector housing 1 and fits with the inner cavity wall of the detector housing 1, a through hole 21 for the optical fiber 10 to pass through is provided on the cleaning plate 2, and a cleaning pad 22 fits with the optical fiber 10 is provided on the inner side of the through hole 21; the cover plate 3 is detachably connected to the side of the detector housing 1 away from the water outlet 12, and is used to cover the detector housing 1, a water inlet sliding hole 31 is provided on the cover plate 3, and a plug hole 23 is provided on the cleaning plate 2; the sliding rod 42 passes through the water inlet sliding hole 31 and is plugged into the plug hole 23, and the motor 51 is used to drive the sliding rod 42 to slide along the water inlet sliding hole 31.

[0023] In a specific implementation, the detector box 1 is a square box, and the cover 3 is connected to the detector box 1 by bolts.

[0024] Preferably, a snap-fit ​​component is provided in the middle of the inner cavity of the detector housing 1 for snapping with the cleaning plate 2 , so that the sliding rod 42 can be inserted into the inner side of the insertion hole 23 when the cover plate 3 is connected.

[0025] The cleaning pad 22 is a rubber pad, and the cleaning pad 22 elastically fits the optical fiber 10 .

[0026] In a specific implementation, the cover plate 3 is bolted to the detector housing 1. The sliding rod 42 is then plugged into the insertion hole 23, regulating the flow of water from the water inlet sliding hole 31 and out of the water outlet hole 12, thereby detecting tritium in the water through the optical fiber 10. When the surface of the optical fiber 10 needs to be cleaned, the motor 51 is started, driving the sliding rod 42 to slide along the water inlet sliding hole 31. The sliding rod 42 then moves the cleaning plate 2, which then cleans impurities from the surface of the optical fiber 10 via the cleaning pad 22 disposed inside the through hole 21.

[0027] After the cover plate 3 of the underwater tritium detector of the present application is connected to the detector box 1, the sliding rod 42 can be connected to the cleaning plate 2 through the plug-in hole 23. By setting the sliding rod 42 to extend to the outside of the cover plate 3, the sliding rod 42 slides along the water inlet sliding hole 31. In this way, it is convenient to drive the cleaning plate 2 to slide by driving the sliding rod 42 to slide by an external motor 51, thereby facilitating the cleaning of impurities on the surface of the optical fiber 10 and making it easy to use.

[0028] like Figures 1 to 5 As shown, as a preferred embodiment, it further includes a top frame 41, wherein the top frame 41 is fixedly connected to the cover plate 3, and the sliding rod 42 is slidably set on the top frame 41 and slides along the circumference of the top frame 41.

[0029] The top frame 41 includes two straight portions 411 and two arcuate portions 412 . The two arcuate portions 412 are respectively connected to the ends of the two straight portions 411 . The straight portions 411 and the water inlet sliding hole 31 both extend in the length direction of the detector housing 1 .

[0030] The sliding rod 42 is slidably arranged on the top frame 41, and the top frame 41 includes two straight portions 411 and an arc-shaped portion 412. In this way, when the sliding rod 42 slides along the straight portion 411, it can synchronously slide along the water inlet slide hole 31. When the sliding rod 42 slides to the end of the water inlet slide hole 31, the sliding rod 42 slides to the arc-shaped portion 412, and the sliding rod 42 slides along the arc-shaped portion 412 and rotates on the inner side of the plug-in hole 23. When the sliding rod 42 rotates to the straight portion 411 on the other side, it continues to slide in the opposite direction along the water inlet slide hole 31, so that the cleaning plate 2 automatically slides back and forth inside the detector box 1, so as to improve the surface cleaning effect of the optical fiber 10 and facilitate use.

[0031] like Figures 1 to 5 As shown, as a preferred embodiment, the sliding rod 42 is an L-shaped rod, and one end of the sliding rod 42 is slidably connected to the top frame 41, and the end wall of the other end of the sliding rod 42 is an inclined wall.

[0032] By setting the end wall of the other end of the sliding rod 42 as an inclined wall, it is convenient to insert the sliding rod 42 into the inside of the inserting hole 23 when connecting the cover plate 3, which is convenient for use.

[0033] It also includes a drive chain 43, a pushing frame 44 and a drive gear 52, wherein the drive chain 43 is rotatably arranged on the peripheral side of the top frame 41, and the pushing frame 44 is fixedly connected to the drive chain 43, and the pushing frame 44 extends to one side of the sliding rod 42, for pushing the sliding rod 42 to slide along the top frame 41; the motor 51 is arranged on one side of the detector box 1, and the drive gear 52 is fixedly connected to the output shaft of the motor 51, and the drive gear 52 is engaged with the drive chain 43.

[0034] In a specific implementation, the pushing frame 44 is an arched frame, and the pushing frame 44 bypasses the top frame 41 and is located on one side of the sliding rod 42 .

[0035] Specifically, when the motor 51 is started, the motor 51 drives the driving gear 52 to rotate, and the driving gear 52 drives the driving chain 43 to rotate along the top frame 41. The driving chain 43 drives the pushing frame 44 to move, and the moving pushing frame 44 pushes the sliding rod 42 to slide along the top frame 41, thereby completing the sliding adjustment of the sliding rod 42, which is convenient for use.

[0036] like Figures 5 to 9 As shown, as a preferred embodiment, it also includes a first clamping plate 61 and a second clamping plate 62, wherein the first clamping plate 61 and the second clamping plate 62 are both arranged inside the detector box 1 and located at one end of the optical fiber 10, and the second clamping plate 62 is slidably arranged on one side of the first clamping plate 61, and the first clamping plate 61 is provided with a first through-hole 611 for the optical fiber 10 to pass through, and the second clamping plate 62 is provided with a second through-hole 621 for the optical fiber 10 to pass through.

[0037] By setting a first clamping plate 61 and a second clamping plate 62 slidably set on one side of the first clamping plate 61, since the optical fiber 10 passes through the first clamping plate 61 and the second clamping plate 62, the second clamping plate 62 and the first clamping plate 61 can be adjusted in advance to slide before adjusting the cleaning plate 2 to slide. Under the staggered clamping action of the first through-hole 611 and the second through-hole 621, the end clamping process of the optical fiber 10 is completed. By clamping and fixing the end of the optical fiber 10, the optical fiber 10 is prevented from being accidentally stressed and causing the end to detach when adjusting the cleaning plate 2 to slide to clean the optical fiber 10, thereby increasing the connection stability of the optical fiber 10 and facilitating use.

[0038] The end of the second clamping plate 62 protrudes from the first clamping plate 61 , the cover plate 3 is provided with a first assembly groove 32 for the second clamping plate 62 to be inserted into, and the inner side of the detector housing 1 is provided with a second assembly groove 13 for the second clamping plate 62 to be inserted into.

[0039] This design allows the end of the second clamping plate 62 to protrude from the first clamping plate 61. Specifically, the end of the second clamping plate 62 simultaneously protrudes from the detector housing 1. This allows the second clamping plate 62 to be adjusted and inserted into the first assembly slot 32 during connection of the cover 3, ensuring proper positioning of the cover 3. The second clamping plate 62 is configured to slide within the first and second assembly slots 32 and 13, thereby enhancing the sliding stability of the second clamping plate 62.

[0040] The cover plate 3 further includes a pressing screw 71 , wherein the pressing screw 71 is threadedly connected to the cover plate 3 and passes through the first assembly groove 32 to abut against the second clamping plate 62 .

[0041] A spring 72 is also included, wherein the spring 72 is disposed inside the second assembly groove 13 and contacts the second clamping plate 62 to reset the sliding position of the second clamping plate 62 .

[0042] In a specific implementation, the second clamping plate 62 is forced by the spring 72 to align the second through hole 621 with the first through hole 611 , making it easier for the optical fiber 10 to pass through the through holes for connection.

[0043] When it is necessary to clamp the end of the optical fiber 10, that is, after the cover plate 3 is connected, the clamping screw 71 is rotated. At this time, the clamping screw 71 presses the second clamping plate 62 downward, moves the second clamping plate 62 downward, and squeezes the spring 72, thereby completing the convenient adjustment of the second clamping plate 62 for easy use.

[0044] In a specific implementation, a knob 73 is provided at the end of the compression screw 71. This design is used to facilitate the regulation of the compression screw 71 for rotation.

[0045] The present invention also provides a method for detecting tritium in water, comprising the above-mentioned tritium detector in water, and further comprising the following steps: Step 1: Connect the cover plate 3 to the detector housing 1 by inserting the second clamping plate 62 into the first assembly groove 32 , and then insert the sliding rod 42 into the insertion hole 23 ; Step 2: Regulate the water flow from the water inlet slide hole 31 and out of the water outlet hole 12 to complete the tritium detection process in the water through the optical fiber 10; Step 3: Start the motor 51 regularly. At this time, the motor 51 drives the driving gear 52 to rotate, and the driving gear 52 drives the driving chain 43 to rotate along the top frame 41. The driving chain 43 drives the pushing frame 44 to move. The moving pushing frame 44 drives the sliding rod 42 to slide along the top frame 41. When the sliding rod 42 slides to the end of the water inlet slide hole 31, the sliding rod 42 slides to the arc portion 412, and the sliding rod 42 slides along the arc portion 412 and rotates on the inner side of the plug-in hole 23. When the sliding rod 42 rotates to the straight portion 411 on the other side, it continues to slide in the opposite direction along the water inlet slide hole 31, so that the cleaning plate 2 automatically slides back and forth inside the detector box 1 to complete the surface cleaning of the optical fiber 10.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tritium detector in water, characterized by: It comprises a detector housing (1), a cleaning plate (2), a cover plate (3), a sliding rod (42) and a motor (51), wherein: An installation cavity (11) is formed inside the detector housing (1), and the optical fiber (10) is installed inside the installation cavity (11); a water outlet (12) communicating with the installation cavity (11) is formed on one side of the detector housing (1); A cleaning plate (2) is slidably arranged inside the detector housing (1) and is in contact with the inner wall of the detector housing (1); a through hole (21) is provided on the cleaning plate (2) for the optical fiber (10) to pass through, and a cleaning pad (22) is provided on the inner side of the through hole (21) and is in contact with the optical fiber (10); A cover plate (3) is detachably connected to a side of the detector housing (1) away from the water outlet (12) and is used to cover the detector housing (1); a water inlet sliding hole (31) is provided on the cover plate (3); and a plug hole (23) is provided on the cleaning plate (2); The sliding rod (42) passes through the water inlet sliding hole (31) and is plugged into the plug hole (23). The motor (51) is used to drive the sliding rod (42) to slide along the water inlet sliding hole (31).

2. The tritium detector in water according to claim 1, wherein: Also included is a top frame (41), wherein The top frame (41) is fixedly connected to the cover plate (3), and the sliding rod (42) is slidably arranged on the top frame (41) and slides along the circumference of the top frame (41).

3. The tritium detector in water according to claim 2, characterized in that: The top frame (41) comprises two straight portions (411) and two arc-shaped portions (412), the two arc-shaped portions (412) being respectively connected to the ends of the two straight portions (411), and the straight portions (411) and the water inlet sliding hole (31) both extend in the length direction of the detector box (1).

4. The tritium detector in water according to claim 2, wherein: The sliding rod (42) is an L-shaped rod, and one end of the sliding rod (42) is slidably connected to the top frame (41), and the end wall of the other end of the sliding rod (42) is an inclined wall.

5. The tritium detector in water according to claim 4, characterized in that: It also includes a drive chain (43), a push frame (44) and a drive gear (52), wherein, A driving chain (43) is rotatably arranged on the peripheral side of the top frame (41), and the pushing frame (44) is fixedly connected to the driving chain (43). The pushing frame (44) extends to one side of the sliding rod (42) and is used to push the sliding rod (42) to slide along the top frame (41); The motor (51) is arranged on one side of the detector housing (1), and the driving gear (52) is fixedly connected to the output shaft of the motor (51), and the driving gear (52) is meshed with the driving chain (43).

6. The tritium detector in water according to claim 1, wherein: It also includes a first clamping plate (61) and a second clamping plate (62), wherein The first clamping plate (61) and the second clamping plate (62) are both arranged inside the detector housing (1) and located at one end of the optical fiber (10). The second clamping plate (62) is slidably arranged on one side of the first clamping plate (61). The first clamping plate (61) is provided with a first through-hole (611) for the optical fiber (10) to pass through, and the second clamping plate (62) is provided with a second through-hole (621) for the optical fiber (10) to pass through.

7. The tritium detector in water according to claim 6, characterized in that: The end of the second clamping plate (62) protrudes from the first clamping plate (61), the cover plate (3) is provided with a first assembly groove (32) for the second clamping plate (62) to be plugged in, and the inner side of the detector housing (1) is provided with a second assembly groove (13) for the second clamping plate (62) to be plugged in.

8. The tritium detector in water according to claim 7, characterized in that: It also includes a pressing screw (71), wherein A pressing screw rod (71) is threadedly connected to the cover plate (3) and passes through the first assembly groove (32) to abut against the second clamping plate (62).

9. The tritium detector in water according to claim 8, characterized in that: Also included is a spring (72), wherein A spring (72) is arranged inside the second assembly groove (13) and contacts the second clamping plate (62) to reset the sliding position of the second clamping plate (62).

10. A method for detecting tritium in water, characterized by: The tritium detector in water according to claim 3 further comprises the following steps: S1, regulating the water flow to flow in from the water inlet sliding hole (31) and out from the water outlet hole (12), completing the detection and processing of tritium in the water through the optical fiber (10); S2. Start the motor (51) regularly. At this time, the motor (51) drives the sliding rod (42) to slide along the top frame (41). When the sliding rod (42) slides to the end of the water inlet sliding hole (31), the sliding rod (42) slides to the arc portion (412). The sliding rod (42) slides along the arc portion (412) and rotates inside the plug hole (23). When the sliding rod (42) rotates to the straight portion (411) on the other side, it continues to slide in the opposite direction along the water inlet sliding hole (31), so that the cleaning plate (2) automatically slides back and forth inside the detector box (1) to complete the surface cleaning of the optical fiber (10).

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