Helium leakage early warning device

Abstract

The invention relates to the technical field of nuclear power engineering, and discloses a helium leakage early warning device which comprises a pipeline, the outer wall of the pipeline is fixedly connected with a box body, the outer side of the box body is provided with an early warning mechanism, the early warning mechanism is used for providing graphical warning for gas leakage, the outer side of the pipeline is provided with a monitoring mechanism, and the monitoring mechanism is connected with the box body. The monitoring mechanism is used for monitoring whether gas leakage occurs or not, a locking mechanism is arranged at the top of the box body, the locking mechanism is used for providing a closed environment for the box body, and the early warning mechanism comprises a hollow box. According to the air pressure principle, in the initial state, no pressure difference exists inside and outside the hollow box, the silica gel film is kept in the natural state, the C-shaped column and the state indicating block are both located at the static and hidden positions, when leakage occurs, the outer surface of the hollow box is pressed under the pressure effect, the silica gel film deforms inwards under the pressure difference, displacement pushes the input end of the C-shaped column, and the output end moves in the opposite direction; and finally, the state indication flag is pushed out of the box body to form a visual alarm signal.

Description

Technical Field

[0001] This invention relates to the field of nuclear power engineering technology, specifically to a helium leak early warning device. Background Technology

[0002] Helium is an inert rare gas with stable chemical properties. It is used in scientific research for protective atmospheres and low-temperature superconducting cooling. Helium is colorless, odorless, and diffuses rapidly, playing an important role in industrial and medical fields. Because of its drift and difficulty in detecting leaks, helium leak warning devices have emerged to ensure gas safety. These devices use highly sensitive sensors to monitor concentration changes, thereby effectively preventing safety hazards and ensuring the smooth operation of production and experiments.

[0003] Traditional helium leak warning devices rely on simple mechanical structures to monitor helium concentration in the environment and prompt on-site personnel to take appropriate measures. However, in actual use, these devices suffer from sensitivity greatly affected by the environment, delayed response time, and a relatively high false alarm rate. Furthermore, the mechanical mechanisms can experience performance degradation due to contamination or aging after long-term use. Existing helium leak warning devices have improved upon traditional principles by employing high-precision sensing elements and digital processing circuits to achieve faster and more stable leak detection and alarm. However, current devices generally lack visual alarm structures. This deficiency means that in noisy or distant environments, helium leaks may not be detected by personnel in a timely manner, thus delaying response. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a helium leak early warning device, which solves the problem that helium leaks cannot be detected by personnel in a timely manner.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a helium leak early warning device, including a pipe, a box fixedly connected to the outer wall of the pipe, an early warning mechanism provided on the outside of the box, the early warning mechanism being used to provide a graphic warning of gas leak, a monitoring mechanism provided on the outside of the pipe, the monitoring mechanism being used to monitor whether a gas leak has occurred, and a locking mechanism provided on the top of the box, the locking mechanism being used to provide a sealed environment for the box; The warning mechanism includes a hollow box, which is fixedly connected to the inner side of the housing. A silicone membrane is fixedly connected to the inner side of the hollow box, and a connecting piece is fixedly connected to the outer wall of the silicone membrane. A vent pipe is connected to the outer side of the hollow box, and a C-shaped column is fixedly connected to the outer side of the connecting piece. An embedded strip is slidably connected to one end of the C-shaped column, and two lifting rods are fixedly connected to the outer side of the C-shaped column. Both lifting rods are slidably connected to the inner side of the housing.

[0006] Preferably, the monitoring mechanism includes a fixed ring, which is fixedly connected to the outside of the pipe. A sliding rod is slidably connected to the outer wall of the fixed ring. Multiple sliding grooves are opened on the outer side of the sliding rod. A spring is fixedly connected to the outer side of the fixed ring. A connecting ring is fixedly connected to the outer side of the spring. A connecting rod is fixedly connected to the inner side of the connecting ring. One end of the connecting rod is slidably connected to the inner side of the sliding groove.

[0007] Preferably, the monitoring mechanism further includes a fixing button, which is fixedly connected to the opposite side of the slide rod. A sealing ring is fixedly connected to the outer periphery of the pipe, multiple distance sensors are fixedly connected to the inner side of the housing, and a nut is threadedly connected to the outer side of the slide rod.

[0008] Preferably, the locking mechanism includes a rotating shaft, with a housing and a door fixedly connected to the outer side of the rotating shaft, two locking plates fixedly connected to the top of the door, a locking seat fixedly connected to the top of the housing, a screw threadedly connected to the outer side of the locking seat, and a viewing window fixedly connected to the outer side of the door.

[0009] Preferably, a control box is fixedly connected to the top of the enclosure, and a base frame is fixedly connected to the inner side of the control box.

[0010] Preferably, a slot is provided on the outer side of the box, and a maintenance plate is slidably connected to the outer side of the box, with the maintenance plate slidably connected to the inner side of the slot.

[0011] Preferably, a motherboard is fixedly connected to the top of the base frame, and a signal receiver is fixedly connected to the top of the motherboard.

[0012] Preferably, a controller is electrically connected to the right side of the signal receiver, and a logic operation module is fixedly connected to the inside of the housing.

[0013] Preferably, an audible alarm and a pressure gauge are fixedly connected to the top of the enclosure.

[0014] Preferably, the controller is fixedly connected to the top of the base frame, and the outer center of the screw is threaded to the inner side of the locking piece.

[0015] This invention provides a helium leak early warning device. It has the following beneficial effects: 1. This invention utilizes the principle of air pressure. In the initial state, there is no pressure difference between the inside and outside of the hollow box, the silicone membrane maintains its natural shape, and the C-shaped column and status indicator block are both in a static and hidden position. When a leak occurs, helium gas accumulates inside the box, causing the pressure to rise. The pressure causes the outer surface of the hollow box to be pressurized, and the silicone membrane deforms inward under the pressure difference. The displacement pushes the input end of the C-shaped column, causing the output end to move in the opposite direction, which drives the embedded strip to slide, and finally pushes the status indicator flag outward out of the box, forming a clearly visible visual alarm signal.

[0016] 2. In this invention, a fixing ring is installed on the outer wall of the pipe, and its position is adjusted so that the six sliding rods are aligned with the six flange nuts. The sliding rods are pushed so that their ends are tightly attached to the surface of the nuts, and the internal springs are kept in a slightly compressed state, so that the sliding rods can transmit the small displacement of the nuts in real time. At the same time, six distance sensors are installed on the inner wall of the box and are aligned with the corresponding sliding rods. When the nuts become loose due to vibration, the resulting displacement will push the sliding rods to move synchronously. The displacement change is captured in real time by the distance sensors and converted into an electrical signal to realize early leakage monitoring and protection.

[0017] 3. Rotate the door with the viewing window to fit the front of the enclosure using the pivot, ensuring that the edge of the door is in close contact with the sealing ring on the front of the enclosure. Then, align the locking plate on the door with the locking seat on the enclosure, and screw the screws into the corresponding threaded holes of the locking plate and the locking seat to lock the door, ensuring that a sealed monitoring space is formed inside the enclosure. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 This is a cross-sectional view of the cabinet door of the present invention; Figure 6 This is a cross-sectional view of the housing of the present invention; Figure 7 for Figure 6 Enlarged view of point A; Figure 8 This is a cross-sectional view of the control box of the present invention.

[0019] The components are as follows: 1. Pipeline; 2. Box body; 3. Early warning mechanism; 301. Hollow box; 302. C-shaped column; 303. Lifting rod; 304. Inset strip; 305. Vent pipe; 306. Silicone membrane; 307. Connecting piece; 4. Monitoring mechanism; 401. Fixing ring; 402. Sliding rod; 403. Connecting rod; 404. Slide groove; 405. Spring; 406. Nut; 407. Fixing button; 408. Sealing ring. ; 409. Connecting ring; 410. Distance sensor; 5. Locking mechanism; 501. Locking seat; 502. Locking piece; 503. Screw; 504. Box door; 505. Viewing window; 506. Rotating shaft; 6. Control box; 7. Base frame; 8. Slot; 9. Inspection plate; 10. Main board; 11. Signal receiver; 12. Controller; 13. Logic operation module; 14. Sound alarm; 15. Pressure gauge. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see the appendix Figure 5 -Appendix Figure 6 This invention provides a helium leak early warning device, including a pipe 1, a housing 2 fixedly connected to the outer wall of the pipe 1, the housing 2 fixedly connected to the outside of two pipes 1, an early warning mechanism 3 provided on the outside of the housing 2, the early warning mechanism 3 being used to provide a graphic warning for gas leaks, a monitoring mechanism 4 provided on the outside of the pipe 1, the monitoring mechanism 4 being used to monitor whether a gas leak has occurred, and a locking mechanism 5 provided on the top of the housing 2, the locking mechanism 5 being used to provide a sealed environment for the housing 2; The early warning mechanism 3 includes a hollow box 301, which provides a sealed frame. The hollow box 301 is fixedly connected to the inside of the box 2. A silicone membrane 306 is fixedly connected to the inside of the hollow box 301. The silicone membrane 306 converts the pressure increase signal caused by helium leakage inside the sealed box 2 into a transmittable mechanical displacement through its own physical deformation. A connecting piece 307 is fixedly connected to the outer wall of the silicone membrane 306. The connecting piece 307 is the medium that transmits the deformation on the hollow box 301 to the C-shaped column 302. The hollow box 301 is connected to a vent pipe 305 on the outside. The vent pipe 305 is used to connect the hollow box 301 with the external environment to maintain the same air pressure inside and outside. A C-shaped column 302 is fixedly connected to the outside of the connecting piece 307. An embedded strip 304 is slidably connected to one end of the C-shaped column 302. The embedded strip 304 is used to connect two C-shaped columns 302. Two lifting rods 303 are fixedly connected to the outside of the C-shaped column 302 to stabilize the movement of the C-shaped column 302. Both lifting rods 303 are slidably connected to the inside of the box body 2.

[0022] The hollow box 301 provides a sealed frame and is fixed inside the box 2. A silicone membrane 306 is connected to the inside of the hollow box 301. The silicone membrane 306 uses its own deformation to convert the pressure increase caused by helium leakage inside the box 2 into a transferable mechanical displacement. A connecting piece 307 is connected to the outer wall of the silicone membrane 306. The connecting piece 307 transmits the deformation of the hollow box 301 to the C-shaped column 302. A vent pipe 305 is connected to the outside of the hollow box 301, which connects the hollow box 301 to the outside and maintains the internal and external air pressure balance. The C-shaped column 302 is connected to the outside of the connecting piece 307. One end of the C-shaped column 302 is slidably connected to the embedded strip 304. The embedded strip 304 is used to connect two C-shaped columns 302. Two lifting rods 303 are fixed to the outside of the C-shaped column 302. The lifting rods 303 are used to keep the C-shaped column 302 stable during movement. The entire warning mechanism 3 can provide a graphic warning for gas leakage.

[0023] Please see the appendix Figure 5 -Appendix Figure 7 The monitoring mechanism 4 includes a fixed ring 401, which is fixedly connected to the outside of the pipe 1. A slide rod 402 is slidably connected to the outer wall of the fixed ring 401. The nut 406 will generate a small axial or radial displacement, pushing the slide rod 402 in contact with it to slide along the fixed ring 401, converting the implicit loosening of the nut 406 into an explicit displacement of the slide rod 402, providing a physical signal for subsequent detection by the sensing components. Multiple slide grooves 404 are opened on the outer side of the slide rod 402. A spring 405 is fixedly connected to the outer side of the fixed ring 401. A connecting ring 409 is fixedly connected to the outer side of the spring 405. A connecting rod 403 is fixedly connected to the inner side of the connecting ring 409. One end of the connecting rod 403 is slidably connected to the inner side of the slide groove 404. The monitoring mechanism 4 also includes a fixing button 407, which is fixedly connected to one side of the slide rod 402. At one end, six sliding rods 402 are respectively connected to six nuts 406. The elastic force of spring 405 keeps the sliding rods 402 in close contact with the nuts 406. When the nuts 406 are loosened and undergo slight displacement, the sliding rods 402 can synchronously follow the displacement and transmit the status signal of the nuts 406 in real time. A sealing ring 408 is fixedly connected to the outside of the pipe 1. The sealing ring 408 fills the gap between the box 2 and the pipe 1, which not only prevents external high temperature, oil, and dust from entering the box 2 and interfering with the accuracy of the sensors, but also prevents helium gas leakage at the flange from spreading to the outside, ensuring that the leakage signal is accurately captured. Multiple distance sensors 410 are fixedly connected to the inside of the box 2. The distance sensors 410 measure the distance between themselves and the sliding rods 402 in real time by emitting and receiving infrared signals. The other end of the sliding rods 402 is threadedly connected to the nuts 406.

[0024] A retaining ring 401 is connected to the outside of pipe 1. A sliding rod 402 is slidably connected to the outer wall of the retaining ring 401. The nut 406 may experience slight displacement, which pushes the sliding rod 402 to slide along the retaining ring 401. This transforms the implicit loosening of the nut 406 into explicit movement of the sliding rod 402, generating a usable signal for subsequent sensing component detection. Multiple grooves 404 are formed on the outer side of the sliding rod 402. A spring 405 is connected to the outer side of the retaining ring 401, and a connecting ring 409 is connected to the outer side of the spring 405. A connecting rod 403 is connected to the inner side of the connecting ring 409, and one end of the connecting rod 403 slides within the groove 404. The monitoring mechanism 4 also includes a fixing button 407, which is connected to one end of the six sliding rods 402. Avoid touching the six nuts 406. With the help of the elastic force of the spring 405, the slide rod 402 always maintains close contact with the nuts 406. When the nuts 406 move slightly due to loosening, the slide rod 402 can move synchronously with them, thereby transmitting the state changes of the nuts 406 in real time. The outer side of the pipe 1 is connected to the sealing ring 408, which fills the gap between the box 2 and the pipe 1. It can not only prevent external high temperature, oil, and dust from entering the box 2 and interfering with the operation of the sensor, but also prevent helium gas from leaking outward at the flange connection, ensuring that the leakage signal can be effectively collected. Multiple distance sensors 410 are connected to the inner side of the box 2. The distance sensors 410 measure the distance between themselves and the slide rod 402 in real time by emitting and receiving infrared signals.

[0025] Please see the appendix Figure 1 -Appendix Figure 3 The locking mechanism 5 includes a rotating shaft 506, on the outer side of which a housing 2 and a door 504 are fixedly connected. Two locking pieces 502 are fixedly connected to the top of the door 504, and a locking seat 501 is fixedly connected to the top of the housing 2. A screw 503 is threadedly connected to the outer side of the locking seat 501. A viewing window 505 is fixedly connected to the outer side of the door 504. When the door 504 is rotated by the rotating shaft 506 to fit against the front of the housing 2, the locking pieces 502 and the locking seat 501 are aligned. At this time, the screw 503 is screwed into the corresponding threaded holes of both. By utilizing the self-locking property and pre-tightening force of the threaded connection, the locking pieces 502 and the locking seat 501 are tightly fitted, thereby firmly fixing the door 504 to the housing 2, preventing the door 504 from shifting due to the vibration of the pipe 1, and ensuring the stable sealing state of the housing 2.

[0026] The outer side of the rotating shaft 506 connects the housing 2 and the door 504. The top of the door 504 is equipped with two locking plates 502, and the top of the housing 2 is equipped with a locking seat 501. The screw 503 and the locking seat 501 are threaded together. The outer side of the door 504 is provided with a viewing window 505. When the door 504 rotates around the rotating shaft 506 to a position that fits against the front of the housing 2, the locking plates 502 and the holes of the locking seat 501 are aligned. At this time, the screw 503 is screwed into the corresponding threaded hole. Relying on the self-locking action and pre-tightening effect of the threaded connection, the locking plates 502 and the locking seat 501 are tightly attached to each other, thereby stably fixing the door 504 on the housing 2 to prevent the door 504 from shifting due to the vibration of the pipe 1 and to ensure that the sealing state of the housing 2 remains reliable.

[0027] Please see the appendix Figure 4 -Appendix Figure 8 A control box 6 is fixedly connected to the top of the housing 2. A base frame 7 is fixedly connected to the inside of the control box 6. A slot 8 is opened on the outside of the housing 2. A maintenance plate 9 is slidably connected to the outside of the housing 2. The maintenance plate 9 is slidably connected to the inside of the slot 8. A main board 10 is fixedly connected to the top of the base frame 7. A signal receiver 11 is fixedly connected to the top of the main board 10. The signal receiver 11 is connected to the distance sensor 410 and the pressure gauge 15 through a line. It receives the displacement electrical signal and pressure electrical signal transmitted by the two in real time and forwards the signal to the main board 10. The controller 12 on the main board 10 sends a control signal to the sound alarm 14 according to the judgment result of the logic operation module 13. The controller 12 is fixedly connected to the right side of the signal receiver 11. The logic operation module 13 is fixedly connected to the inside of the housing 2. The sound alarm 14 is fixedly connected to the top of the housing 2. The pressure gauge 15 is fixedly connected to the right side of the sound alarm 14. The bottom of the controller 12 is fixedly connected to the top of the base frame 7. The bottom of the pressure gauge 15 is fixedly connected to the top of the housing 2.

[0028] A control box 6 is connected to the top of the housing 2. A base frame 7 is connected to the inside of the control box 6. A slot 8 is opened on the outside of the housing 2. A maintenance plate 9 is slidably connected to the outside of the housing 2. The maintenance plate 9 slides inside the slot 8. A main board 10 is connected to the top of the base frame 7. A signal receiver 11 is connected to the top of the main board 10. The signal receiver 11 is connected to the distance sensor 410 and the pressure gauge 15 through a line. It continuously receives the displacement electrical signal and pressure electrical signal transmitted by the two and forwards these signals to the main board 10. The controller 12 on the main board 10 sends a control command to the sound alarm 14 according to the analysis result of the logic operation module 13.

[0029] Working principle: Initially, the internal pressure of box 2 is equal to the external atmospheric pressure. There is no pressure difference between the inside and outside of hollow box 301, which is in a naturally relaxed state and does not deform. C-shaped column 302 is in a stationary position, and the status indicator block is locked inside box 2 and is not visible from the outside. Leakage occurs through pressure conduction. When a leak occurs at the connecting flange, helium gas accumulates inside the sealed box 2, causing the internal pressure of box 2 to rise. The increased pressure acts on the outer surface of hollow box 301, while the internal pressure of hollow box 301 remains atmospheric pressure. Therefore, the external pressure of hollow box 301 is greater than that of hollow box 301. Under the influence of internal pressure and this pressure difference, the connecting piece 307 on the hollow box 301, which is connected to the silicone membrane 306, is compressed inward, and its center point generates an inward displacement. The inward displacement of the hollow box 301 pushes the input end of the C-shaped column 302 that is in contact with it. The C-shaped column 302 amplifies this small displacement and transmits it to the output end. The direction of movement of the output end can be opposite to that of the input end. Therefore, the embedded strip 304 of the output end slides to the C-shaped columns 302 on both sides. Subsequently, the status indicator flag on the C-shaped column 302 is pushed outward, exposing it to the box body 2, providing a visual alarm. The fixing ring 401 is fitted and fixed to the outer wall of one of the pipes 1. The position of the fixing ring 401 is adjusted so that the six sliding rods 402 on the fixing ring 401 are aligned with the six nuts 406 respectively. The sliding rods 402 are pushed until their ends contact the surface of the nuts 406. At this time, the spring 405 in the middle of the sliding rod 402 is in a slightly compressed state. The elastic force of the spring 405 ensures that the sliding rod 402 is always in close contact with the nuts 406, realizing the real-time transmission of the displacement of the nuts 406. The six distance sensors 410 of the sensing component are fixed at equal intervals on the housing 2. Adjust the position of the distance sensors 410 on the inner wall of the side so that the detection end of each distance sensor 410 is directly facing the corresponding slide rod 402. The slide rod 402 is continuously in contact with the nut 406 under the action of the spring 405. When the nut 406 loosens due to vibration, thermal expansion and contraction, or fatigue, the nut 406 will produce a small axial or radial displacement, pushing the slide rod 402 to move synchronously. At this time, the distance sensor 410 facing the slide rod 402 will capture the position change of the slide rod 402 in real time, convert the displacement signal into an electrical signal and transmit it to the signal receiver 11 in the control box 6. If helium leaks from the flange sealing surface due to loose nut 406, the leaked helium will enter the sealed chamber 2, causing the pressure inside chamber 2 to rise. Pressure gauge 15 detects the pressure value inside chamber 2 in real time, converts the pressure signal into an electrical signal, and transmits it to signal receiver 11. Signal receiver 11 transmits the displacement signal and pressure signal to logic operation module 13 of main board 10. Logic operation module 13 compares the real-time displacement value with a preset displacement threshold and the real-time pressure value with a preset pressure threshold. If neither exceeds the threshold, controller 12 does not trigger an alarm, and the device continues to monitor. If logic operation module 13 detects that the displacement signal transmitted by a distance sensor 410 exceeds the preset threshold but the pressure of pressure gauge 15 is not abnormal, logic operation module 13 transmits the signal to controller 12. Controller 12 triggers sound alarm 14 to emit intermittent sound and light signals. At the same time, it uploads the warning information to the nuclear power plant DCS system through the communication interface connected to control box 6, prompting maintenance personnel to pay attention to the status of nut 406. If a double abnormality is detected, controller 12 triggers sound alarm 14 to emit a continuous sound and light alarm. Rotate the door 504 with the viewing window 505 to fit the front of the enclosure 2 using the pivot 506, so that the edge of the door 504 is in close contact with the sealing ring 408 on the front of the enclosure 2. Then, align the locking piece 502 on the door 504 with the locking seat 501 on the enclosure 2, and screw the screw 503 into the corresponding threaded holes of the locking piece 502 and the locking seat 501 to lock the door 504, ensuring that a sealed monitoring space is formed inside the enclosure 2.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A helium leak early warning device, comprising a pipe (1), characterized in that, The outer wall of the pipe (1) is fixedly connected to a box (2). An early warning mechanism (3) is provided on the outside of the box (2). The early warning mechanism (3) is used to provide a graphic warning for gas leakage. A monitoring mechanism (4) is provided on the outside of the pipe (1). The monitoring mechanism (4) is used to monitor whether gas leakage has occurred. A locking mechanism (5) is provided on the top of the box (2). The locking mechanism (5) is used to provide a sealed environment for the box (2). The warning mechanism (3) includes a hollow box (301), which is fixedly connected to the inner side of the box body (2). A silicone membrane (306) is fixedly connected to the inner side of the hollow box (301). A connecting piece (307) is fixedly connected to the outer wall of the silicone membrane (306). A vent pipe (305) is connected to the outer side of the hollow box (301). A C-shaped column (302) is fixedly connected to the outer side of the connecting piece (307). An embedded strip (304) is slidably connected to one end of the C-shaped column (302). Two lifting rods (303) are fixedly connected to the outer side of the C-shaped column (302). Both lifting rods (303) are slidably connected to the inner side of the box body (2).

2. The helium leak early warning device according to claim 1, characterized in that, The monitoring mechanism (4) includes a fixed ring (401), which is fixedly connected to the outside of the pipe (1). A sliding rod (402) is slidably connected to the outer wall of the fixed ring (401). Multiple sliding grooves (404) are provided on the outer side of the sliding rod (402). A spring (405) is fixedly connected to the outer side of the fixed ring (401). A connecting ring (409) is fixedly connected to the outer side of the spring (405). A connecting rod (403) is fixedly connected to the inner side of the connecting ring (409). One end of the connecting rod (403) is slidably connected to the inner side of the sliding groove (404).

3. A helium leak early warning device according to claim 2, characterized in that, The monitoring mechanism (4) also includes a fixing button (407), which is fixedly connected to the opposite side of the slide rod (402). A sealing ring (408) is fixedly connected to the outer periphery of the pipe (1). Multiple distance sensors (410) are fixedly connected to the inner side of the box (2). A nut (406) is threadedly connected to the outer side of the slide rod (402).

4. A helium leak early warning device according to claim 1, characterized in that, The locking mechanism (5) includes a rotating shaft (506), on the outside of which a housing (2) and a door (504) are fixedly connected respectively. Two locking pieces (502) are fixedly connected to the top of the door (504), and a locking seat (501) is fixedly connected to the top of the housing (2). A screw (503) is threadedly connected to the outside of the locking seat (501), and a viewing window (505) is fixedly connected to the outside of the door (504).

5. A helium leak early warning device according to claim 1, characterized in that, A control box (6) is fixedly connected to the top of the box (2), and a base frame (7) is fixedly connected to the inside of the control box (6).

6. A helium leak early warning device according to claim 1, characterized in that, The outer side of the box (2) is provided with a slot (8), and a maintenance plate (9) is slidably connected to the outer side of the box (2). The maintenance plate (9) is slidably connected to the inner side of the slot (8).

7. A helium leak early warning device according to claim 5, characterized in that, The top of the base frame (7) is fixedly connected to the motherboard (10), and the top of the motherboard (10) is fixedly connected to the signal receiver (11).

8. A helium leak early warning device according to claim 7, characterized in that, The right side of the signal receiver (11) is electrically connected to a controller (12), and the inside of the housing (2) is fixedly connected to a logic operation module (13).

9. A helium leak early warning device according to claim 1, characterized in that, A sound alarm (14) is fixedly connected to the top of the box (2), and a pressure gauge (15) is fixedly connected to the top of the box (2).

10. A helium leak early warning device according to claim 8, characterized in that, The controller (12) is fixedly connected to the top of the base frame (7), and the outer middle part of the screw (503) is threaded to the inner side of the locking piece (502).

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