Device for preventing falling of sulfuric acid filling crane pipe and acid pipe

Abstract

This invention relates to the field of pipeline connections and discloses a device for preventing the fall of a sulfuric acid loading arm (ACA). The device includes a fixed pipe, an inner sleeve threaded to the bottom of the fixed pipe, an outer sleeve fitted over the inner sleeve, and a lifting unit located on the upper part of the fixed pipe for adjusting the installation height of the outer sleeve. The anti-fall unit further includes: a detection component located between the fixed pipe and the inner sleeve for detecting the connection status between them; a transmission component symmetrically arranged on the inner sleeve; and a fixing component located above the transmission component for fixing the inner sleeve to the fixed pipe. This invention reduces the possibility of the inner sleeve detaching from the fixed pipe, thereby reducing the leakage of concentrated sulfuric acid from inside the fixed pipe, reducing the risk of burns to operators, and protecting the personal safety of workers.

Description

Technical Field

[0001] This invention relates to the field of pipeline connection technology, specifically to a device for preventing the sulfuric acid loading arm from falling off. Background Technology

[0002] Large sulfuric acid plants use fixed alignment devices for their acid loading arms on external loading trestles. This means that multiple loading positions on the trestles are designed according to the acid production demand. Each loading position is equipped with an acid loading arm and control valves for proper alignment and loading. Typically, the acid loading arm consists of an outer sleeve, an inner sleeve, and a fixed pipe. The fixed pipe is threaded to the loading arm body. After the tanker truck stops, the outer sleeve and inner sleeve extend into the tanker truck under the drive of a speed reducer, and the control valves are opened to begin loading acid.

[0003] The existing equipment has the following drawbacks: In long-term practice, it has been found that the connection method of the fixed pipe has great safety hazards: Each loading arm needs to be filled with acid more than 10 times a day on average. After the acid is filled, the concentrated acid remaining in the acid delivery pipe gradually turns into dilute acid, which is highly corrosive to the 316L acid delivery pipe. Over time, the threads at the connection of the fixed pipe will gradually corrode and fail. If it cannot be prevented from falling in time or the acid delivery cannot be stopped immediately, it will pose a risk of burns to the operators by concentrated sulfuric acid.

[0004] Therefore, this application proposes a device to prevent the sulfuric acid loading arm from falling off the acid transport pipe in order to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a device for preventing the sulfuric acid loading arm from falling, in order to solve the problem that the threads at the connection of the fixed pipe will gradually corrode and fail, and if the fall cannot be prevented in time or the acid delivery cannot be stopped immediately, it will pose a danger to the operator of being burned by concentrated sulfuric acid.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for preventing the sulfuric acid loading arm from falling, comprising a fixed pipe, an inner sleeve threaded to the bottom of the fixed pipe, an outer sleeve sleeved outside the inner sleeve, and a lifting unit disposed on the upper part of the fixed pipe for adjusting the installation height of the outer sleeve, and further comprising:

[0007] A fall arrestor unit is disposed between the fixed tube and the inner sleeve, and is used to fix the inner sleeve if it falls off.

[0008] The fall protection unit includes:

[0009] A detection component is disposed between the fixed tube and the inner sleeve, and is used to detect the connection status between the fixed tube and the inner sleeve;

[0010] The transmission components are symmetrically arranged on the inner sleeve and are used to transmit the power of the detection components;

[0011] A fixing component is disposed on the upper part of the transmission component and is used to fix the inner sleeve to the fixing tube.

[0012] The detection component includes a fixing ring sleeved on the fixing tube, a pull rope disposed at the lower part of the fixing ring, a pressure sensor disposed on the fixing ring, and a mounting ring disposed at the bottom of the pull rope. The pressure sensor is connected to the pull rope, and the mounting ring is sleeved on the inner sleeve. The lower part of the mounting ring is provided with a power component for driving the transmission component to move.

[0013] The power component includes a hydraulic cylinder located at the lower part of the mounting ring and a movable ring located at the lower part of the hydraulic cylinder. The pressure sensor transmits a signal to the controller, which controls the hydraulic cylinder to move. The mounting ring is connected to the transmission component.

[0014] The transmission component includes a mounting block disposed on the moving ring, a connecting rod disposed on the mounting block, a rotating frame disposed on the side of the connecting rod away from the moving ring, and a fixed frame disposed on the mounting ring. The rotating frame is connected to the fixed frame, and the top of the rotating frame is connected to the fixed component.

[0015] The fixing component includes a guide frame disposed on the upper part of the fixing frame, a push rod disposed on the side of the rotating frame away from the connecting rod, and a fixing plate disposed on the push rod. The fixing plate passes through the guide frame, and the guide frame has a limiting groove at the position corresponding to the fixing plate to restrict the fixing plate. The fixing plate is adjustablely disposed above the fixing ring.

[0016] The fixing plate is wedge-shaped.

[0017] The movable ring has a linkage component inside, and the linkage component has a transmission rod. The transmission rod passes through the mounting ring and has a snap-fit ​​plate on its upper part. The snap-fit ​​plate snaps into the fixed tube.

[0018] The linkage component includes a rack on the moving ring, a gear threadedly connected to the rack, a support frame on the inner sleeve, and a rotating rod sleeved on the support frame. The gear is sleeved on the rotating rod, a main gear is sleeved on the rotating rod, a driven gear is threadedly connected to the main gear, and the driven gear is sleeved on the transmission rod.

[0019] The mounting ring has a through hole at the position corresponding to the transmission rod, the mounting ring has a moving groove at the position corresponding to the snap-fit ​​plate for the snap-fit ​​plate to move, and the fixing tube has a fixing groove at the position corresponding to the snap-fit ​​plate for placing the snap-fit ​​plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. When the threaded connection between the fixed tube and the inner sleeve becomes loose, the detection component will drive the transmission component to move. The transmission component will push the fixed component to move closer to the fixed tube, thereby fixing the inner sleeve to the fixed tube and preventing the inner sleeve from falling. When the inner sleeve is detected to have a tendency to fall, it can be fixed, reducing the possibility of the inner sleeve falling off the fixed tube, thereby reducing the leakage of concentrated sulfuric acid inside the fixed tube, reducing the risk of burns to operators, and protecting the personal safety of workers.

[0022] 2. When the inner sleeve tends to fall, the pressure sensor is stretched by the pull rope. After the pressure sensor senses the pressure, it transmits the signal to the controller. The controller controls the power component to move, which causes the transmission component to drive the fixed component to move, so that the fixed component is fixed on the fixed tube, thereby fixing the inner sleeve to the fixed tube. During the downward movement of the moving ring, the linkage component will be driven to rotate, which in turn causes the transmission rod to drive the snap-fit ​​plate to rotate, so that the snap-fit ​​plate is snapped and fixed inside the fixed tube. By fixing the fixed plate to the outside of the fixed tube and fixing the inside of the fixed tube with the snap-fit ​​plate, the stability of the fixing between the fixed tube and the inner sleeve can be further improved. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure in one embodiment of the present invention;

[0024] Figure 2 This is a frontal structural schematic diagram of an embodiment of the present invention;

[0025] Figure 3 This is a side view of the structure in one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure by which the fixing component fixes the fixing tube and the inner sleeve in one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the anti-fall unit in one embodiment of the present invention;

[0028] Figure 6 This is a cross-sectional structural schematic diagram of the fall protection unit in one embodiment of the present invention;

[0029] Figure 7This is a schematic diagram of the installation position of the linkage component in one embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the linkage component in one embodiment of the present invention;

[0031] Figure 9 for Figure 6 Enlarged structural diagram of section A in the middle.

[0032] In the diagram: 1. Fixed tube; 11. Fixed groove; 2. Inner sleeve; 21. Mounting ring; 211. Moving groove; 212. Perforation; 3. Outer sleeve; 4. Lifting unit; 5. Anti-fall unit; 51. Fixed ring; 52. Pull rope; 53. Pressure sensor; 54. Hydraulic cylinder; 55. Moving ring; 56. Transmission component; 561. Mounting block; 562. Connecting rod; 563. Rotating frame; 564. Fixed frame; 57. Fixed component; 571. Push rod; 572. Fixed plate; 573. Guide frame; 574. Limiting groove; 58. Linkage component; 581. Rack; 582. Gear; 583. Rotating rod; 584. Support frame; 585. Main gear; 586. Driven gear; 59. Transmission rod; 510. Snap-fit ​​plate Detailed Implementation

[0033] The technical solutions of 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.

[0034] Please see Figure 1-9 This invention provides a technical solution: a device for preventing the sulfuric acid loading arm from falling, comprising a fixed pipe 1, an inner sleeve 2 threaded to the bottom of the fixed pipe 1, an outer sleeve 3 sleeved outside the inner sleeve 2, and a lifting unit 4 disposed on the upper part of the fixed pipe 1 for adjusting the installation height of the outer sleeve 3, and further comprising:

[0035] The anti-fall unit 5 is installed between the fixed tube 1 and the inner sleeve 2 to fix the inner sleeve 2 if it falls off.

[0036] Fall protection unit 5 includes:

[0037] The detection component is installed between the fixed tube 1 and the inner sleeve 2 to detect the connection status between the fixed tube 1 and the inner sleeve 2.

[0038] The transmission component 56 is symmetrically arranged on the inner sleeve 2 and is used to transmit the power of the detection component;

[0039] The fixing component 57 is disposed on the upper part of the transmission component 56 and is used to fix the inner sleeve 2 to the fixing tube 1.

[0040] It should be noted that during operation, when the threaded connection between the fixed tube 1 and the inner sleeve 2 becomes loose, the detection component will drive the transmission component 56 to move. The transmission component 56 will push the fixing component 57 to move closer to the fixed tube 1, thereby fixing the inner sleeve 2 to the fixed tube 1 and preventing the inner sleeve 2 from falling. When the inner sleeve 2 is detected to have a tendency to fall, it can be fixed, reducing the possibility of the inner sleeve 2 falling off the fixed tube 1, thereby reducing the leakage of concentrated sulfuric acid inside the fixed tube 1, reducing the risk of burns to the operator, and protecting the personal safety of the staff.

[0041] In one embodiment, the detection component includes a fixing ring 51 sleeved on the fixing tube 1, a pull rope 52 disposed at the lower part of the fixing ring 51, a pressure sensor 53 disposed on the fixing ring 51, and a mounting ring 21 disposed at the bottom of the pull rope 52. The pressure sensor 53 is connected to the pull rope 52, and the mounting ring 21 is sleeved on the inner sleeve 2. The lower part of the mounting ring 21 is provided with a power component for driving the transmission component 56 to move.

[0042] With this design, when the inner sleeve 2 tends to fall, the pressure sensor 53 will be stretched by the pull rope 52. After the pressure sensor 53 senses the pressure, it will transmit the signal to the controller. The controller will control the power component to move, so that the transmission component 56 drives the fixed component 57 to move, so that the fixed component 57 is fixed on the fixed tube 1, thereby fixing the inner sleeve 2 to the fixed tube 1.

[0043] In one embodiment, the power component includes a hydraulic cylinder 54 disposed at the lower part of the mounting ring 21 and a movable ring 55 disposed at the lower part of the hydraulic cylinder 54. The pressure sensor 53 transmits a signal to the controller, which controls the hydraulic cylinder 54 to move. The mounting ring 21 is connected to the transmission component 56.

[0044] With this design, when the hydraulic cylinder 54 is activated, it drives the moving ring 55 to move downward, transmitting power to the transmission component 56, which in turn pushes the fixed component 57 to move. This allows the inner sleeve 2 and the fixed pipe 1 to be fixed immediately if they become loose.

[0045] In one embodiment, the transmission component 56 includes a mounting block 561 disposed on the moving ring 55, a connecting rod 562 disposed on the mounting block 561, a rotating frame 563 disposed on the side of the connecting rod 562 away from the moving ring 55, and a fixed frame 564 disposed on the mounting ring 21. The rotating frame 563 is connected to the fixed frame 564, and the top of the rotating frame 563 is connected to the fixed component 57.

[0046] With this design, the connecting rod 562 moves downward under the drive of the moving ring 55, and then pushes the bottom of the rotating frame 563 to reverse along the fixed frame 564 to the side away from the moving ring 55. This causes the upper part of the rotating frame 563 to move closer to the fixed tube 1, thereby causing the fixing component 57 to move closer to the fixed ring 51. Then, the fixing component 57 is snapped and fixed to the upper part of the fixed ring 51, thereby fixing the inner sleeve 2 to the fixed tube 1.

[0047] In one embodiment, the fixing component 57 includes a guide frame 573 disposed on the upper part of the fixing frame 564, a push rod 571 disposed on the side of the rotating frame 563 away from the connecting rod 562, and a fixing plate 572 disposed on the push rod 571. The fixing plate 572 passes through the guide frame 573. The guide frame 573 has a limiting groove 574 at the position corresponding to the fixing plate 572 to restrict the fixing plate 572. The fixing plate 572 is adjustablely disposed above the fixing ring 51.

[0048] With this design, the rotating frame 563 drives the push rod 571 to move closer to the fixed pipe 1, thereby causing the fixed plate 572 to slide inside the limiting groove 574. This allows the fixed plate 572 to move above the fixed ring 51, with the bottom of the fixed plate 572 fitting against the top of the fixed ring 51, so that the fixed plate 572 is hooked onto the upper part of the fixed ring 51. This prevents the inner sleeve 2 from falling off, and the controller transmits a signal to the warning unit, reminding the staff that there is a loosening between the inner sleeve 2 and the fixed pipe 1, requiring the acid delivery to be stopped and the inner sleeve 2 and the fixed pipe 1 to be repaired.

[0049] In one embodiment, the fixing plate 572 is wedge-shaped.

[0050] With this design, the shapes of the fixing plate 572 and the limiting groove 574 are set to correspond, which allows the fixing plate 572 to be snapped onto the guide frame 573. This ensures that when the fixing plate 572 is hung and fixed on the fixing ring 51, it will not slip inside the limiting groove 574, thus improving the stability of the connection between the fixing plate 572 and the fixing ring 51.

[0051] In one embodiment, a linkage component 58 is provided inside the movable ring 55, and a transmission rod 59 is provided on the linkage component 58. The transmission rod 59 passes through the mounting ring 21 and has a snap-fit ​​plate 510 on its upper part. The snap-fit ​​plate 510 snaps into the fixed tube 1.

[0052] With this design, as the moving ring 55 moves downward, it will drive the linkage component 58 to rotate, which in turn causes the transmission rod 59 to drive the snap-fit ​​plate 510 to rotate, so that the snap-fit ​​plate 510 is snapped and fixed inside the fixed tube 1. By fixing the fixed plate 572 to the outside of the fixed tube 1, the snap-fit ​​plate 510 fixes the inside of the fixed tube 1, which can further improve the stability of the fixed tube 1 and the inner sleeve 2.

[0053] In one embodiment, the linkage component 58 includes a rack 581 disposed on the moving ring 55, a gear 582 threadedly connected to the rack 581, a support frame 584 disposed on the inner sleeve 2, and a rotating rod 583 sleeved on the support frame 584. The gear 582 is sleeved on the rotating rod 583, a main gear 585 is sleeved on the rotating rod 583, a driven gear 586 is threadedly connected to the main gear 585, and the driven gear 586 is sleeved on the transmission rod 59.

[0054] With this design, the moving ring 55 drives the rack 581 to move down, which causes the gear 582 to drive the rotating rod 583 to rotate, which in turn causes the main gear 585 to drive the driven gear 586 to rotate, and the driven gear 586 to drive the transmission rod 59 to rotate, so that the snap-fit ​​plate 510 is snapped and fixed on the fixed tube 1.

[0055] In one embodiment, a through hole 212 is provided at the position of the corresponding transmission rod 59 of the mounting ring 21, a moving groove 211 for moving the corresponding snap plate 510 is provided at the position of the corresponding snap plate 510 of the mounting ring 21, and a fixing groove 11 for placing the snap plate 510 is provided at the position of the corresponding snap plate 510 of the fixing tube 1.

[0056] With this design, the perforation 212 allows the transmission rod 59 to rotate inside the mounting ring 21, and the moving groove 211 allows the transmission rod 59 to drive the snap-fit ​​plate 510 to rotate on the upper part of the mounting ring 21, so that the snap-fit ​​plate 510 can be snapped and fixed in the fixing groove 11, thereby achieving the reinforcement of the fixing tube 1 and the inner sleeve 2.

Claims

1. A device for preventing falling of a sulfuric acid loading acid crane pipe acid pipe, comprising a fixed pipe (1), an inner sleeve pipe (2) threadedly connected to the bottom of the fixed pipe (1), an outer sleeve pipe (3) sleeved outside the inner sleeve pipe (2), and a lifting unit (4) arranged at the upper part of the fixed pipe (1) and used for adjusting the installation height of the outer sleeve pipe (3), characterized in that, Also include: The anti-falling unit (5) is arranged between the fixed pipe (1) and the inner sleeve (2), and is used for fixing the falling inner sleeve (2); The anti-falling unit (5) includes: Detection component, arranged between the fixed pipe (1) and the inner sleeve (2), for detecting the connection condition between the fixed pipe (1) and the inner sleeve (2); Transmission component (56), symmetrically arranged on the inner sleeve (2), for transmitting the power of the detection component; The fixing component (57) is arranged on the upper part of the transmission component (56), which is used for fixing the inner sleeve (2) and the fixed pipe (1); The detection component includes a fixing ring (51) sleeved on the fixed pipe (1), a pull rope (52) arranged on the lower part of the fixing ring (51), a pressure sensor (53) arranged on the fixing ring (51), and a mounting ring (21) arranged on the bottom of the pull rope (52), the pressure sensor (53) is connected with the pull rope (52), the mounting ring (21) is sleeved on the inner sleeve (2), the lower part of the mounting ring (21) is provided with a power component for driving the transmission component (56) to move; The power component includes a hydraulic cylinder (54) arranged on the lower part of the mounting ring (21) and a moving ring (55) arranged on the lower part of the hydraulic cylinder (54), the pressure sensor (53) transmits signals to the controller, the controller controls the movement of the hydraulic cylinder (54), the mounting ring (21) is connected with the transmission component (56); The transmission component (56) includes a mounting block (561) arranged on the moving ring (55), a connecting rod (562) arranged on the mounting block (561), a rotating frame (563) arranged on the side of the connecting rod (562) away from the moving ring (55), and a fixing frame (564) arranged on the mounting ring (21), the rotating frame (563) is connected to the fixing frame (564), and the top of the rotating frame (563) is connected to the fixing component (57).

2. The device for preventing falling of a sulfuric acid loading crane pipe acid pipe according to claim 1, characterized in that: The fixing component (57) includes a guide frame (573) arranged on the upper part of the fixing frame (564), a push rod (571) arranged on the side of the rotating frame (563) away from the connecting rod (562), and a fixing plate (572) arranged on the push rod (571), the fixing plate (572) is arranged on the guide frame (573), the guide frame (573) is provided with a limiting groove (574) corresponding to the position of the fixing plate (572), and the fixing plate (572) is adjustably arranged above the fixing ring (51).

3. The device for preventing falling of the sulfuric acid filling crane pipe acid conveying pipe according to claim 2, characterized in that: The fixing plate (572) is wedge-shaped.

4. The device for preventing falling of a sulfuric acid loading crane pipe acid pipe according to claim 1, characterized in that: The inner part of the moving ring (55) is provided with a linkage component (58), the linkage component (58) is provided with a transmission rod (59), the transmission rod (59) penetrates the mounting ring (21) and is provided with a clamping plate (510) at the upper part, the clamping plate (510) is clamped with the fixed tube (1).

5. The device for preventing falling of the sulfuric acid filling crane pipe acid conveying pipe according to claim 4, characterized in that: The linkage component (58) comprises a rack (581) provided on the moving ring (55), a gear (582) in meshing connection with the rack (581), a support frame (584) provided on the inner sleeve (2) and a rotating rod (583) sleeved on the support frame (584), the gear (582) is sleeved on the rotating rod (583), the rotating rod (583) is sleeved with a main gear (585), the main gear (585) is in meshing connection with a slave gear (586), and the slave gear (586) is sleeved on the transmission rod (59).

6. The device for preventing falling of a sulfuric acid loading crane pipe acid pipe according to claim 5, characterized in that: The mounting ring (21) is provided with a through hole (212) corresponding to the position of the transmission rod (59), the mounting ring (21) is provided with a moving groove (211) corresponding to the position of the clamping plate (510) for the movement of the clamping plate (510), and the fixed tube (1) is provided with a fixed groove (11) corresponding to the position of the clamping plate (510) for placing the clamping plate (510).

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