Safety interlocking device for quick-open type pressure container

Abstract

The invention discloses a safety interlocking device for a quick-open type pressure container, and belongs to the technical field of safety locks. A safety interlocking device for a quick-open type pressure container comprises a base and a container body fixedly installed above the base, a plurality of side wing plates are fixedly installed on the surface of the top of the container body, a detachable blind plate cover is arranged on the surface of the top end of the container body, and fixing plates with the same number as the side wing plates are fixedly installed on the side surface of the blind plate cover. Compared with a traditional safety lock, the safety interlocking device for the quick-open type pressure container has the advantages that the safety interlocking device and the pressure release valve are mutually correlated, when pressure exists in the container body, the safety interlocking device locks the blind plate cover on the surface of the container body, and after the pressure in the container body is released, the safety interlocking device is opened, and the pressure release valve is opened. The blind plate cover is detached from the surface of the container body, the safety of workers is guaranteed, the safety performance of the pressure container equipment is improved, opening and closing of safety interlocking are achieved through internal air pressure, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] This invention relates to the field of safety lock technology, and more specifically, to a safety interlock device for quick-opening pressure vessels. Background Technology

[0002] The safety lock of a pressure vessel is a key safety device used to ensure the safety and reliability of the pressure vessel during use. Safety interlock devices can be divided into three types: mechanical, electric, and combined. The safety lock ensures the normal operation of the pressure vessel.

[0003] Chinese patent application CN201811006256.8 discloses an automatic control door system, door control method, and sterilizer, belonging to the field of pressure vessel technology. The automatic control door system includes a locking device for driving a rotating device installed on the pressure vessel body to rotate, turning a locking tongue on the rotating device into or out of a slot on the pressure vessel cover to lock or unlock the pressure vessel cover; a safety lock device connected to the locking device for controlling the rotation of the rotating device; after the pressure vessel is locked, the safety lock device engages to restrict the rotation of the rotating device; before the pressure vessel is unlocked, the safety lock device disengages to release the rotation restriction of the rotating device; and an opening and closing device connected to the pressure vessel body and the pressure vessel cover respectively, for controlling the pressure vessel cover to rotate upward to open or downward to close.

[0004] In the above technical solution, the airtightness of the door is ensured by installing a safety lock on the pressure vessel, thereby ensuring high safety during the use of the pressure vessel. However, some traditional safety locks use a combination of sensors and mechanical locks to lock the pressure vessel. However, the pressure sensor is an electronic device and is easily damaged by environmental factors, resulting in inaccurate air pressure detection. If personnel open the safety lock at this time, it will cause injury to the workers. Moreover, manually adjusting the safety lock also increases the labor intensity of the operators. Summary of the Invention

[0005] The purpose of this invention is to provide a safety interlock device for quick-opening pressure vessels to solve the problems mentioned in the background art. To achieve the above objectives, the present invention provides the following technical solution: A safety interlock device for a quick-opening pressure vessel includes a base and a vessel body fixedly mounted thereon. Several side wing plates are fixedly mounted on the top surface of the vessel body. A removable blind flange cover is provided on the top surface of the vessel body. The side surfaces of the blind flange cover are fixedly mounted with the same number of fixing plates as the side wing plates. The fixing plates and side wing plates each have a through-hole first locking hole and a second locking hole. A through-hole pressure relief valve is fixedly mounted on the surface of the blind flange cover. The pressure relief valve has a sliding column that can slide vertically up and down inside. Several fixing rods are fixedly mounted on the surface of the sliding column. One end of any of the fixed rods is rotatably connected to a rotating rod, and one end of the rotating rod is provided with a pulley device. Several through-type sliding rods are slidably connected to the surface of the container body. An inclined seat is fixedly installed on one end of the sliding rod, and a trapezoidal block is fixedly installed on the other end of the sliding rod. An arc-shaped track is fixedly installed on the bottom surface of the trapezoidal block. The surface of the arc-shaped track is respectively provided with slots and connecting slots. The connecting slots communicate with the bottom of the arc-shaped track. A guide ring is fixedly installed below any of the side wing plates. A locking rod for locking the first and second locking holes is slidably connected inside the guide ring.

[0006] By adopting the above technical solution, after aligning the card plate with the slot, the blind flange cover is rotated clockwise. At this time, the card plate is initially fixed on the surface of the container body, the fixed plate and the side wing plate are aligned, and the first and second locking holes are vertically aligned. When the pressure inside the container body increases, the suspended ball moves upward, causing the sliding column to move upward and compress the third spring. At this time, the fixed rod, rotating rod and pulley device follow the sliding column to move upward. When the pulley device moves upward and passes through the groove to compress the inclined surface of the trapezoidal block, the trapezoidal block moves, causing the sliding rod and the inclined seat to move and compress the second spring. The locking rod is compressed by the inclined seat and moves upward to lock the first and second locking holes. Compared with traditional safety locks, this safety interlock works in conjunction with the pressure relief valve. When there is pressure inside the container body, this safety interlock locks the blind flange cover on the surface of the container body. When the pressure inside the container body is released, the safety interlock is opened, allowing the blind flange cover to be removed from the surface of the container body, ensuring the safety of the personnel. At the same time, it increases the safety performance of the pressure vessel equipment. The opening and closing of the safety interlock is achieved by internal air pressure, reducing the labor intensity of the operators.

[0007] Preferably, the number of side wing plates, fixing plates, fixing rods, rotating rods, pulley devices, and arc-shaped tracks are the same. When the blind plate cover is installed on the container body, the pulley device is lowered into the arc-shaped track through a slot. After the blind plate cover is installed on the top of the container body, the positions of the first locking hole and the second locking hole are vertically aligned.

[0008] By adopting the above technical solution, the slotted design prevents the pulley device from being obstructed when lowered into the arc-shaped track.

[0009] Preferably, a gear is fixedly installed on the surface of any one of the rotating rods, and an arc-shaped toothed plate that meshes with the gear is fixedly installed on the bottom surface of any one of the arc-shaped tracks. The pulley device is in contact with the inner wall of the arc-shaped track, and the pulley device is rotatably connected to the fixed rod through the rotating rod.

[0010] By adopting the above technical solution, the gear and the arc-shaped toothed plate are designed to match each other. During the meshing process of the gear and the arc-shaped toothed plate, the pulley device is only allowed to rotate 90 degrees.

[0011] Preferably, a fixing frame is provided between the side wing plate and the guide ring, the guide ring is fixedly connected to the bottom surface of the side wing plate through the fixing frame, the bottom surface of the locking rod is provided with a ball head, the ball head is in contact with the surface of the inclined seat, and a first spring for its reset is sleeved on the surface of the locking rod.

[0012] By adopting the above technical solution, the locking rod is disengaged from the first and second locking holes under the elastic force of the first spring, thereby realizing the opening of the safety interlock.

[0013] Preferably, one end of the first spring is fixedly connected to the bottom surface of the guide ring, and the other end of the first spring is fixedly connected to the surface of the ball head. The ball head is elastically connected to the guide ring through the first spring.

[0014] By adopting the above technical solution, the first spring is used for the operation and reset of the locking rod.

[0015] Preferably, a second spring is fitted onto the surface of each of the slide bars. One end of the second spring is fixedly connected to the surface of the trapezoidal block, and the other end of the second spring is fixedly connected to the inner wall of the container body. The trapezoidal block is elastically connected to the container body through the second spring.

[0016] By adopting the above technical solution, the second spring is used for the motion reset of the trapezoidal block.

[0017] Preferably, a suspended ball is fixedly installed on the bottom surface of the sliding column. When the air pressure inside the container increases, the suspended ball moves upward, carrying the sliding column upward.

[0018] Preferably, the bottom surface of the blind cover is fixedly equipped with a number of locking plates for engaging the container body, the top surface of the container body is provided with the same number of locking slots as the locking plates, one side of any of the side wing plates is provided with a limiting block for limiting the locking plates, and the surfaces of the two fixed plates are fixedly equipped with handles.

[0019] By adopting the above technical solution, the limiting block is used to limit the position of the card plate. When the card plate is limited, the positions of the first locking hole and the second locking hole correspond vertically.

[0020] Preferably, the pressure relief valve has an expansion chamber inside, and the surface of the sliding column is fixedly installed with a first seal and a second seal for sealing the inner wall of the pressure relief valve. A third spring is elastically connected between the sliding column and the pressure relief valve. One end of the third spring is fixedly connected to the inner wall of the pressure relief valve, and the other end of the third spring is fixedly connected to the top of the sliding column. The surface of the pressure relief valve has several vent holes communicating with the expansion chamber.

[0021] By adopting the above technical solution, when the pressure inside the container increases, the suspended ball moves upward, causing the sliding column to move upward and squeeze the third spring. The upward movement of the sliding column causes the first and second seals to move and misalign with the inner wall of the pressure relief valve, thereby connecting the container body, the expansion chamber, and the exhaust port. At this time, the high-pressure air is discharged through the expansion chamber and the exhaust port, reducing the internal pressure of the container body, ensuring the release of internal pressure, and preventing the container body from being damaged by excessive pressure.

[0022] Preferably, an arc-shaped groove is formed on the surface of any one of the side wing plates, and an arc-shaped block matching the arc-shaped groove is fixedly installed on the bottom surface of any one of the fixing plates. When the arc-shaped block is inserted into the arc-shaped groove, the positions of the first locking hole and the second locking hole are vertically aligned.

[0023] By adopting the above technical solution, the blind plate cover is rotated clockwise. At this time, the arc-shaped block moves and inserts into the arc-shaped groove. Through the matching of the arc-shaped block and the arc-shaped groove, and with the pulley device rolling along the inner wall of the arc-shaped track, the plate is conveniently rotated and initially fixed on the surface of the container body, making it more convenient and faster to initially fix the blind plate cover on the surface of the container body.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1) When using this quick-opening pressure vessel safety interlock device, compared with traditional safety locks, this safety interlock works in conjunction with the pressure relief valve. When there is pressure inside the vessel, this safety interlock locks the blind flange cover to the surface of the vessel body. After the internal pressure of the vessel body is released, the safety interlock is opened, allowing the blind flange cover to be removed from the surface of the vessel body, ensuring the safety of the personnel and increasing the safety performance of the pressure vessel equipment. The opening and closing of the safety interlock is achieved through internal air pressure, reducing the labor intensity of the operators.

[0025] 2) When the pressure inside the container increases, the safety interlock device for this quick-opening pressure vessel causes the suspended ball to move upward, which in turn causes the sliding column to move upward and compress the third spring. The upward movement of the sliding column causes the first and second seals to move and misalign with the inner wall of the pressure relief valve, thus connecting the container body, the expansion chamber, and the exhaust port. At this time, the high-pressure air is discharged through the expansion chamber and the exhaust port, reducing the internal pressure of the container body, ensuring the release of internal pressure, and preventing damage to the container body due to excessive pressure.

[0026] 3) When using this quick-opening pressure vessel safety interlock device, rotate the blind flange cover clockwise. At this time, the arc-shaped block moves and inserts into the arc-shaped groove. Through the matching of the arc-shaped block and the arc-shaped groove, and with the pulley device rolling along the inner wall of the arc-shaped track, the clamping plate is conveniently rotated and initially fixed on the surface of the container body, making it more convenient and quick to initially fix the blind flange cover on the surface of the container body. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the container body of the present invention; Figure 3 This is a schematic diagram of the positional structure of the sliding column and the suspended ball of the present invention; Figure 4 This is a schematic diagram showing the positional structure of the arc-shaped track, arc-shaped toothed plate, and guide ring of the present invention; Figure 5 This is a schematic diagram of the positional structure of the trapezoidal block and the arc track of the present invention; Figure 6 This is a schematic diagram of the positional structure of the arc-shaped track and the arc-shaped toothed plate of the present invention; Figure 7 This is a schematic diagram of the side wing plate position structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of part of the structure of A in the middle; Figure 9 This is a schematic diagram of the arc-shaped block and the second lock hole position structure of the present invention; Figure 10 This is a schematic diagram of the internal structure of the pressure relief valve of the present invention.

[0028] The following are the labeling details in the diagram: 1. Base; 2. Container body; 3. Side wing plate; 4. Blind plate cover; 5. Fixing plate; 6. First lock hole; 7. Pressure relief valve; 8. Sliding column; 9. Fixing rod; 10. Rotating rod; 11. Pulley device; 12. Gear; 13. Sliding rod; 14. Inclined seat; 15. Trapezoidal block; 16. Arc-shaped track; 17. Arc-shaped toothed plate; 18. Guide ring; 19. Locking rod; 20. Slot; 21. Connecting slot; 22. First spring; 23. Fixing frame; 24. Ball head; 25. Second spring; 26. Suspended ball; 27. Locking plate; 28. Locking groove; 29. ​​Limiting block; 30. Arc-shaped groove; 31. Arc-shaped block; 32. Second lock hole; 33. First seal; 34. Second seal; 35. Third spring; 36. Exhaust hole; 37. Handle; 38. Expansion chamber. Detailed Implementation

[0029] Example 1: Please refer to Figure 1 - Figure 10A safety interlock device for a quick-opening pressure vessel includes a base 1 and a vessel body 2 fixedly installed on it. The vessel body 2 is a conventional pressure vessel device in the prior art. Several side wing plates 3 are fixedly installed on the top surface of the vessel body 2. The side wing plates 3 are conventional side wing plates in the prior art. The side wing plates 3 are provided with first locking holes 6 for locking a blind flange cover 4. A detachable blind flange cover 4 is provided on the top surface of the vessel body 2. The blind flange cover 4 is used to seal the vessel body 2. The side surface of the blind flange cover 4 is fixedly installed with the same number of fixing plates 5 as the side wing plates 3. The fixing plates 5 and the side wing plates 3 are respectively provided with through-hole first locking holes 6 and second locking holes 32. The first locking holes 6 and the second locking holes 32 are combined with locking rods 19 to form a safety interlock, locking the blind flange cover 4. The blind flange cover 4 is locked onto the container body 2. A through-type pressure relief valve 7 is fixedly installed on the surface of the blind flange cover 4. The pressure relief valve 7 is a pressure-relieving device in the prior art. The pressure relief valve 7 is fixedly installed in the middle of the blind flange cover 4, and the pressure relief valve 7 and the center point of the container body 2 are on the same vertical line. The inside of the pressure relief valve 7 is provided with a sliding column 8 that can slide vertically up and down. Several fixed rods 9 are fixedly installed on the surface of the sliding column 8. One end of any fixed rod 9 is rotatably connected to a rotating rod 10. One end of the rotating rod 10 is provided with a pulley device 11. The pulley device 11 is a conventional pulley device in the prior art. The pulley device 11 rolls on the inner wall of the arc-shaped track 16 to facilitate the rotation and installation of the blind flange cover 4. When the pulley device 11 rolls on the surface of the trapezoidal block 15, it facilitates the locking rod 19. The movement locks the first locking hole 6 and the second locking hole 32. Several through-type sliding rods 13 are slidably connected to the surface of the container body 2. The sliding rods 13 are used to guide the movement of the trapezoidal block 15. An inclined seat 14 is fixedly installed on one end of the sliding rod 13, and a trapezoidal block 15 is fixedly installed on the other end of the sliding rod 13. An arc-shaped track 16 is fixedly installed on the bottom surface of the trapezoidal block 15. The arc-shaped track 16 is set according to the concentric circle of the container body 2. The surface of the arc-shaped track 16 is respectively provided with slots 20 and connecting slots 21. The trapezoidal block 15 is divided into an inclined surface and a vertical plane. The connecting slots 21 are connected to the inclined surface to ensure that the pulley device 11 moves smoothly and stably to the inclined surface of the trapezoidal block 15. The connecting slots 21 are connected to the bottom of the arc-shaped track 16. A guide is fixedly installed below any side wing plate 3. Ring 18, the guide ring 18 has a sliding connection inside which is a locking rod 19 for locking the first locking hole 6 and the second locking hole 32. After the locking plate 27 is aligned with the locking groove 28, the blind plate cover 4 is rotated clockwise. At this time, the locking plate 27 is rotated and initially fixed on the surface of the container body 2. The fixed plate 5 corresponds to the side wing plate 3, and the positions of the first locking hole 6 and the second locking hole 32 are vertically aligned. When the pressure inside the container body 2 increases, the suspended ball 26 moves upward, which moves the sliding column 8 upward to compress the third spring 35. At this time, the fixed rod 9, the rotating rod 10 and the pulley device 11 follow the sliding column 8 to move upward. When the pulley device 11 moves upward and passes through the connecting groove 21 to compress the inclined surface of the trapezoidal block 15, the trapezoidal block 15 moves, which moves the sliding rod 13 and the inclined seat 14 to compress the second spring 25.The locking rod 19, pressed upwards by the inclined seat 14, locks the first locking hole 6 and the second locking hole 32. Compared to traditional safety locks, this safety interlock works in conjunction with the pressure relief valve 7. When there is pressure inside the container body 2, this safety interlock locks the blind flange cover 4 to the surface of the container body 2. When the internal pressure of the container body 2 is released, the safety interlock is opened, allowing the blind flange cover 4 to be removed from the surface of the container body 2, ensuring the safety of personnel and increasing the safety performance of the pressure vessel equipment. The opening and closing of the safety interlock is achieved through internal air pressure, reducing the labor intensity of operators.

[0030] The side wing plate 3, fixing plate 5, fixing rod 9, rotating rod 10, pulley device 11 and arc track 16 are the same in number. The multiple designs of the side wing plate 3 and fixing plate 5 increase the stability and safety of the blind cover 4 installed on the container body 2. When the blind cover 4 is installed on the container body 2, the pulley device 11 is lowered into the arc track 16 through the slot 20. After the blind cover 4 is installed on the top of the container body 2, the positions of the first locking hole 6 and the second locking hole 32 are vertically aligned. The slot 20 is set to prevent the pulley device 11 from being blocked when it is lowered into the arc track 16.

[0031] A gear 12 is fixedly installed on the surface of any rotating rod 10, and an arc-shaped toothed plate 17 that meshes with the gear 12 is fixedly installed on the bottom surface of any arc-shaped track 16. The pulley device 11 contacts the inner wall of the arc-shaped track 16. The arc-shaped track 16 has a large design space and will not obstruct the pulley device 11 from rotating 90 degrees. The pulley device 11 is rotatably connected to the fixed rod 9 through the rotating rod 10. The gear 12 and the arc-shaped toothed plate 17 are designed to match each other. During the meshing process of the gear 12 and the arc-shaped toothed plate 17, only the pulley device 11 is allowed to rotate 90 degrees.

[0032] A fixing bracket 23 is provided between the side wing plate 3 and the guide ring 18. The guide ring 18 is fixedly connected to the bottom surface of the side wing plate 3 through the fixing bracket 23. A ball head 24 is provided on the bottom surface of the locking rod 19. The ball head 24 contacts the surface of the inclined seat 14. A first spring 22 for its reset is sleeved on the surface of the locking rod 19. Under the elastic force of the first spring 22, the locking rod 19 is disengaged from the first lock hole 6 and the second lock hole 32, thereby realizing the opening of the safety interlock.

[0033] One end of the first spring 22 is fixedly connected to the bottom surface of the guide ring 18, and the other end of the first spring 22 is fixedly connected to the surface of the ball head 24. The ball head 24 is elastically connected to the guide ring 18 through the first spring 22. The first spring 22 is used for the operation and reset of the locking rod 19.

[0034] Each slide bar 13 is fitted with a second spring 25. One end of the second spring 25 is fixedly connected to the surface of the trapezoidal block 15, and the other end of the second spring 25 is fixedly connected to the inner wall of the container body 2. The trapezoidal block 15 is elastically connected to the container body 2 through the second spring 25. The second spring 25 is used for the movement reset of the trapezoidal block 15.

[0035] A suspended ball 26 is fixedly installed on the bottom surface of the sliding column 8. The suspended ball 26 is a conventional suspended ball 26 in the prior art. When the pressure inside the container body 2 increases, the suspended ball 26 moves upward, which moves the sliding column 8 upward to compress the third spring 35. At this time, the fixed rod 9, the rotating rod 10 and the pulley device 11 follow the sliding column 8 to move upward.

[0036] The bottom surface of the blind cover 4 is fixedly equipped with several locking plates 27 for locking the container body 2. The top surface of the container body 2 is provided with the same number of slots 28 as the locking plates 27. The top surface of the container body 2 is provided with a boundary plate for locking the locking plates 27. Each side of any side wing plate 3 is provided with a limiting block 29 for limiting the locking plates 27. The surfaces of the two fixed plates 5 are fixedly equipped with handles 37. The limiting blocks 29 are used to limit the locking plates 27. When the locking plates 27 are limited, the positions of the first locking hole 6 and the second locking hole 32 correspond vertically.

[0037] The pressure relief valve 7 has an expansion chamber 38 inside. The surface of the sliding column 8 is fixedly installed with a first seal 33 and a second seal 34 for sealing the inner wall of the pressure relief valve 7. A third spring 35 is elastically connected between the sliding column 8 and the pressure relief valve 7. One end of the third spring 35 is fixedly connected to the inner wall of the pressure relief valve 7, and the other end of the third spring 35 is fixedly connected to the top of the sliding column 8. The surface of the pressure relief valve 7 has several exhaust holes 36 that communicate with the expansion chamber 38.

[0038] When the pressure inside the container body 2 increases, the suspended ball 26 moves upward, causing the sliding column 8 to move upward and compress the third spring 35. The upward movement of the sliding column 8 causes the first seal 33 and the second seal 34 to move and misalign with the inner wall of the pressure relief valve 7, thereby connecting the container body 2, the expansion chamber 38, and the exhaust port 36. At this time, the high-pressure air is discharged through the expansion chamber 38 and the exhaust port 36, reducing the internal pressure of the container body 2, ensuring the release of internal pressure, preventing damage to the container body 2 due to excessive pressure, and ensuring that personnel will not be injured when opening the blind flange cover 4.

[0039] The steps for using this invention are as follows: When using this quick-opening pressure vessel safety interlock device, manually lift the handle 37, align the locking plate 27 with the locking groove 28, and lower the blind flange cover 4. At this time, the pressure relief valve 7, sliding column 8, suspension ball 26, fixing rod 9, rotating rod 10, and pulley device 11 are lowered into the container body 2. During the lowering process, the pulley device 11 is lowered into the arc-shaped track 16 through the slot 20, and the pulley device 11 contacts the inner wall of the arc-shaped track 16. Rotate the blind flange cover 4 clockwise. At this time, the locking plate 27 is rotated and fixed on the surface of the container body 2. During the rotation of the blind flange cover 4, when the locking plate 27 is limited by the limiting block 29, the fixing plate 5 matches the side wing plate 3, and the first locking hole 6 and the second locking hole 32 are in position. Correspondingly, during the rotation of the blind flange cover 4, the pressure relief valve 7, sliding column 8, suspended ball 26, fixed rod 9, rotating rod 10, and pulley device 11 rotate. As the pulley device 11 rotates along the inner wall of the arc-shaped track 16, the gear 12 meshes with the arc-shaped toothed plate 17. As the pulley device 11 continues to rotate along the inner wall of the arc-shaped track 16, the rotating rod 10 rotates the pulley device 11 (note that during the meshing of the gear 12 and the arc-shaped toothed plate 17, the pulley device 11 is only allowed to rotate 90 degrees). At this time, the pulley device 11 is parallel to the connecting groove 21. When the pressure inside the container body 2 increases, the suspended ball 26 moves upward, causing the sliding column 8 to move upward and compress the third spring 35. At this time, the fixed rod 9, rotating rod 10, and pulley device 11... As the sliding column 8 moves upward, the pulley device 11 moves upward and passes through the connecting groove 21, pressing the inclined surface of the trapezoidal block 15. At this time, the movement of the trapezoidal block 15 causes the sliding rod 13 and the inclined seat 14 to move, pressing the second spring 25. The inclined seat 14 then presses the ball head 24, causing the locking rod 19 to move upward and lock the first locking hole 6 and the second locking hole 32. After the air pressure inside the container body 2 is discharged through the pressure relief valve 7, the sliding column 8 returns to its original position under the action of the third spring 35. The fixed rod 9, the rotating rod 10, and the pulley device 11 rotate and follow the sliding column 8 to return to its original position. At this time, the locking rod 19 returns to its original position under the action of the first spring 22. At this time, the first locking hole 6 and the second locking hole 32 are opened. Then, the blind plate cover 4 is rotated counterclockwise, and the pulley device 11 and the rotating rod 10 are engaged by the gear 12. The lower reset of the arc-shaped toothed plate 17 causes the pulley device 11 to roll along the inner wall of the arc-shaped track 16. When the locking plate 27 aligns with the locking slot 28, the blind plate cover 4 is lifted upwards. At this time, the pulley device 11 is lifted through the slot 20, thereby detaching the blind plate cover 4 from the container body 2. After the locking plate 27 aligns with the locking slot 28, the blind plate cover 4 is rotated clockwise. At this time, the locking plate 27 is initially fixed on the surface of the container body 2. The fixing plate 5 corresponds to the side wing plate 3, and the first locking hole 6 and the second locking hole 32 are vertically aligned. When the pressure inside the container body 2 increases, the suspended ball 26 moves upwards, causing the sliding column 8 to move upwards and compress the third spring 35. At this time, the fixing rod 9, the rotating rod 10, and the pulley device 11 move upwards along with the sliding column 8.When the pulley device 11 moves upward and passes through the connecting groove 21 to press the inclined surface of the trapezoidal block 15, the movement of the trapezoidal block 15 causes the sliding rod 13 and the inclined seat 14 to move and press the second spring 25. The locking rod 19 is pressed upward by the inclined seat 14 and locks the first locking hole 6 and the second locking hole 32. After the air pressure inside the container body 2 is discharged through the pressure relief valve 7, the sliding column 8 is reset under the action of the third spring 35. The fixed rod 9, the rotating rod 10 and the pulley device 11 rotate and follow the sliding column 8 to reset. At this time, the locking rod 19 is reset under the action of the first spring 22. At this time, the first locking hole 6 and the second locking hole 32 are also reset. 32 is opened, and then the blind flange cover 4 is rotated counterclockwise to detach it from the container body 2. Compared to traditional safety locks, this safety interlock works in conjunction with the pressure relief valve 7. When there is pressure inside the container body 2, this safety interlock locks the blind flange cover 4 to the surface of the container body 2. When the internal pressure of the container body 2 is released, the safety interlock is opened, allowing the blind flange cover 4 to be removed from the surface of the container body 2, ensuring the safety of personnel and increasing the safety performance of the pressure vessel equipment. The opening and closing of the safety interlock is achieved through internal air pressure, reducing the labor intensity of operators.

[0040] Example 2: Please refer to Figure 1 - Figure 10 The difference from embodiment 1 is that an arc-shaped groove 30 is provided on the surface of any side wing plate 3, and an arc-shaped block 31 matching the arc-shaped groove 30 is fixedly installed on the bottom surface of any fixed plate 5. When the arc-shaped block 31 is inserted into the arc-shaped groove 30, the positions of the first locking hole 6 and the second locking hole 32 are vertically aligned. When the blind plate cover 4 is rotated clockwise, the arc-shaped block 31 moves and inserts into the arc-shaped groove 30. Through the insertion and matching of the arc-shaped block 31 and the arc-shaped groove 30, and with the pulley device 11 rolling along the inner wall of the arc-shaped track 16, it is convenient for the card plate 27 to rotate and be initially fixed on the surface of the container body 2, making it more convenient and faster to initially fix the blind plate cover 4 on the surface of the container body 2.

[0041] The steps for using this invention are as follows: When using this quick-opening pressure vessel safety interlock device, rotate the blind flange cover 4 clockwise. At this time, the arc-shaped block 31 moves and inserts into the arc-shaped groove 30. Through the insertion and matching of the arc-shaped block 31 and the arc-shaped groove 30, and with the pulley device 11 rolling along the inner wall of the arc-shaped track 16, it is convenient for the locking plate 27 to rotate and be initially fixed on the surface of the container body 2. This makes it easier and faster to initially fix the blind flange cover 4 on the surface of the container body 2. When the arc-shaped block 31 and the arc-shaped groove 30 are inserted and matched, the positions of the first locking hole 6 and the second locking hole 32 are vertically aligned.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety interlock device for a quick-opening pressure vessel, comprising a base (1) and a vessel body (2) fixedly mounted thereon, characterized in that: A plurality of side wing plates (3) are fixedly mounted on the top surface of the container body (2); a detachable blind plate cover (4) is provided on the top surface of the container body (2); a fixing plate (5) having the same number as the side wing plates (3) is fixedly mounted on the side surface of the blind plate cover (4); a through-type first lock hole (6) and a second lock hole (32) are respectively provided inside the fixing plate (5) and the side wing plates (3); a through-type pressure relief valve (7) is fixedly mounted on the surface of the blind plate cover (4); a sliding column (8) capable of vertically sliding up and down is provided inside the pressure relief valve (7); a plurality of fixing rods (9) are fixedly mounted on the surface of the sliding column (8); a rotating rod (10) is rotatably connected to the surface of one end of any one of the fixing rods (9); the rotating rod (10) ) is provided with a pulley device (11), a plurality of through-type slide rods (13) are slidably connected to the surface of the container body (2), an inclined seat (14) is fixedly installed on one end surface of the slide rod (13), a trapezoidal block (15) is fixedly installed on the other end surface of the slide rod (13), an arc track (16) is fixedly installed on the bottom surface of the trapezoidal block (15), a groove (20) and a connecting groove (21) are respectively provided on the surface of the arc track (16), and the connecting groove (21) is connected to the bottom of the arc track (16), a guide ring (18) is fixedly installed below any one of the side wing plates (3), and a locking rod (19) for locking the first locking hole (6) and the second locking hole (32) is slidably connected inside the guide ring (18).

2. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: The side wing plates (3), the fixing plates (5), the fixing rods (9), the rotating rods (10), the pulley devices (11) and the arc track (16) are of the same number. When the blind plate cover (4) is mounted on the container body (2), the pulley device (11) is lowered into the arc track (16) through the slot (20). After the blind plate cover (4) is mounted on the top of the container body (2), the first locking hole (6) and the second locking hole (32) correspond in position up and down.

3. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A gear (12) is fixedly mounted on the surface of any one of the rotating rods (10), an arc-shaped toothed plate (17) meshing with the gear (12) is fixedly mounted on the bottom surface of any one of the arc-shaped tracks (16), the pulley device (11) is in contact with the inner wall of the arc-shaped track (16), and the pulley device (11) is rotatably connected to the fixed rod (9) via the rotating rod (10).

4. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A fixing frame (23) is provided between the side wing plate (3) and the guide ring (18); the guide ring (18) is fixedly connected to the bottom surface of the side wing plate (3) via the fixing frame (23); a ball head (24) is provided on the bottom surface of the locking rod (19); the ball head (24) contacts the surface of the inclined seat (14); and a first spring (22) for resetting the locking rod (19) is sleeved on the surface of the locking rod (19).

5. A safety interlock device for a quick-opening pressure vessel according to claim 4, characterized in that: One end of the first spring (22) is fixedly connected to the bottom surface of the guide ring (18), and the other end of the first spring (22) is fixedly connected to the surface of the ball head (24); the ball head (24) is elastically connected to the guide ring (18) via the first spring (22).

6. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A second spring (25) is sleeved on the surface of any one of the slide bars (13); one end of the second spring (25) is fixedly connected to the surface of the trapezoidal block (15); the other end of the second spring (25) is fixedly connected to the inner wall of the container body (2); and the trapezoidal block (15) is elastically connected to the container body (2) via the second spring (25).

7. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A suspension ball (26) is fixedly mounted on the bottom surface of the sliding column (8); when the air pressure inside the container body (2) increases, the suspension ball (26) moves upward and slides the sliding column (8) upward.

8. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: A plurality of clamping plates (27) for clamping the container body (2) are fixedly mounted on the bottom surface of the blind plate cover (4); the top surface of the container body (2) is provided with clamping grooves (28) the same number as the clamping plates (27); a limiting block (29) for limiting the position of the clamping plates (27) is provided on one side of any of the side wing plates (3); and handles (37) are fixedly mounted on the surfaces of the two fixed plates (5).

9. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: An expansion chamber (38) is provided inside the pressure relief valve (7); a first seal (33) and a second seal (34) for sealing the inner wall of the pressure relief valve (7) are fixedly mounted on the surface of the sliding column (8); a third spring (35) is elastically connected between the sliding column (8) and the pressure relief valve (7); one end of the third spring (35) is fixedly connected to the inner wall of the pressure relief valve (7); the other end of the third spring (35) is fixedly connected to the top end of the sliding column (8); and a plurality of exhaust holes (36) communicating with the expansion chamber (38) are provided on the surface of the pressure relief valve (7).

10. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: The surface of any of the side wing plates (3) is provided with an arc-shaped groove (30), and the bottom surface of any of the fixed plates (5) is fixedly mounted with an arc-shaped block (31) matching the arc-shaped groove (30). When the arc-shaped block (31) is matched and plugged into the arc-shaped groove (30), the first locking hole (6) and the second locking hole (32) correspond in position up and down.

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