Flange type hoisting and lifting device for safety blowout preventer of under-pressure operation machine

Abstract

The utility model relates to the technical field of hoisting of under-pressure operation equipment in the petrochemical industry, in particular to a flange type hoisting and lifting device for a safe blowout preventer of an under-pressure operation machine, which comprises a main hoisting point disc, four annular hoisting lugs and four mounting grooves are respectively arranged on the main hoisting point disc, and the annular hoisting lugs and the mounting grooves are arranged on the main hoisting point disc. And the four annular lifting lugs and the four mounting grooves are distributed in a staggered mode, the four annular lifting lugs are slidably sleeved with mounting pins, and the outer ends of the four mounting pins are rotationally sleeved with U-shaped rings. The safe blowout preventer hoisting tool can stably hoist a safe blowout preventer for wellhead mounting or dismounting, not only can safely and efficiently complete hoisting, but also avoids the adverse consequences that the blowout preventer body is damaged and even rollover hurt people due to stress concentration caused by improper hoisting of the blowout preventer, and has the advantages of being simple in structure, high in field operability, strong in practicability, convenient to use and the like. And the whole hoisting operation process is high in efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of lifting equipment for live operations in the petrochemical industry, and in particular to a flange-type lifting device for the safety blowout preventer of a live operation machine. Background Technology

[0002] Live pressure operation technology, as a current well completion and drilling / workout operation technology under live pressure conditions at the wellhead, has unparalleled technical advantages in application. It can avoid the contamination of the producing formation during well control, maintain the original formation pressure, and improve the recovery rate. In addition, live pressure operation has the advantages of short cycle and high efficiency, which also means that the disassembly, transportation, and installation of live pressure operation equipment are frequent. Currently, the original design and manufacturing of the 180-105 safety blowout preventer has a lack of lifting point manufacturing. When lifting the blowout preventer, the body is fixed by wrapping it with wire rope or sling, and the center of gravity is randomly selected for lifting. This not only poses a risk of tipping over during lifting, but also poses a risk of stress concentration and damage to parts of the blowout preventer due to the center of gravity not being centered. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a flange-type lifting device for a blowout preventer on a pressurized work platform. This device, via connecting screws, allows the lifting unit to be installed on the upper flange of the blowout preventer. The two flange faces are fixed by connecting the screws, and the device is lifted using four lifting rings on its upper surface. This enables blowout preventer lifting operations without lifting points. The device is safe, simple, efficient, reusable, and improves lifting stability, ensuring the safety of the blowout preventer itself.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a flange-type lifting device for a safety blowout preventer of a pressurized work machine, comprising a main lifting point disc, wherein the main lifting point disc is respectively provided with annular lifting lugs and mounting grooves, and the number of annular lifting lugs and mounting grooves is four, and the four annular lifting lugs and four mounting grooves are staggered, each of the four annular lifting lugs is slidably fitted with a mounting pin, and the outer end of each of the four mounting pins is rotatably fitted with a U-shaped ring, and a steel ring groove protective protrusion is fixedly connected to the lower end face of the main lifting point disc.

[0005] As a further description of the above technical solution:

[0006] The main lifting point disc has a storage slot, the number of which is the same as the number of annular lifting lugs. Each of the four annular lifting lugs has a fixed shaft fixedly sleeved at the end away from the mounting pin, and the four fixed shafts are rotatably connected to the four storage slots respectively.

[0007] As a further description of the above technical solution:

[0008] Each of the four mounting pins has a limiting groove at one end, and the upper and lower outer walls of the four limiting grooves are provided with grooves. A sliding rod is fixedly connected between the upper and lower inner walls of the multiple grooves. A slider is slidably connected to the outer wall of the multiple sliding rods, and a limiting block is fixedly connected between two adjacent sliders.

[0009] As a further description of the above technical solution:

[0010] Each of the sliding rods has a spring movably sleeved at its outer end, and each of the springs is fixedly connected between the slider and the inner wall of the groove.

[0011] As a further description of the above technical solution:

[0012] The limiting block is slidably disposed in the limiting groove, and one side of the upper end face of the limiting block is made of a slope structure.

[0013] As a further description of the above technical solution:

[0014] The number of steel ring groove protective protrusions is the same as the number of annular lifting lugs, and multiple steel ring groove protective protrusions are distributed below the annular lifting lugs.

[0015] This utility model has the following beneficial effects:

[0016] 1. Compared with the existing technology, the flange-type lifting device for the safety blowout preventer of the pressurized machine benefits from the fact that the flange-type lifting device is perfectly matched with the flange size of the blowout preventer, and the symmetrical layout of the lifting lugs makes the lifting point and the center of gravity of the safety blowout preventer on the same vertical line. This can effectively ensure the safety and stability of the blowout preventer during the lifting process, solve the safety problem of the safety blowout preventer lifting, greatly reduce the wear of the slings, and improve the lifting quality.

[0017] 2. Compared with the existing technology, this flange-type lifting device for a live-line work machine's safety blowout preventer benefits from the setting of the protective protrusion of the steel ring groove in the flange-type lifting device. This can effectively avoid rigid contact between the steel ring groove on the flange face and the flange disc during connection and fixing, which would cause damage to the steel ring groove and result in sealing failure.

[0018] 3. Compared with the prior art, this flange-type lifting device for a safety blowout preventer on a pressurized machine benefits from the fact that the slider, under the action of the spring, can drive the limit block to slide out, thereby automatically limiting the locking nut after the locking nut is screwed onto the mounting pin, preventing the mounting pin from sliding out of the annular lifting lug.

[0019] 4. Compared with the prior art, this flange-type lifting device for the safety blowout preventer of a pressurized work machine, by opening an installation groove on the main lifting point disc and rotatably connecting the annular lifting lug to the installation groove through a fixed shaft, can facilitate the storage of the main lifting point disc when not in use and make it convenient to stack the two main lifting point discs. Attached Figure Description

[0020] Figure 1 This is a main structural diagram of a flange-type hoisting and lifting device for a safety blowout preventer on a pressurized work machine, as proposed in this utility model.

[0021] Figure 2 This utility model provides a cross-sectional view of the main lifting point disc of a flange-type hoisting and lifting device for a safety blowout preventer on a pressurized work machine.

[0022] Figure 3 This is a bottom structural diagram of a flange-type hoisting and lifting device for a safety blowout preventer on a pressurized work machine, as proposed in this utility model.

[0023] Figure 4 This is a cross-sectional view of the mounting pin of a flange-type hoisting and lifting device for a safety blowout preventer on a pressurized work machine, as proposed in this utility model.

[0024] Figure 5 This utility model presents a diagram showing the annular lifting lug storage structure of a flange-type hoisting and lifting device for a safety blowout preventer on a pressurized work machine.

[0025] Legend:

[0026] 1. Annular lifting lug; 2. Main lifting point disc; 3. U-shaped ring; 4. Steel ring groove protective protrusion; 5. Mounting groove; 6. Mounting pin; 7. Locking nut; 8. Sliding rod; 9. Sliding block; 10. Limiting block; 11. Storage groove; 12. Fixed shaft; 13. Spring. Detailed Implementation

[0027] Reference Figure 1-5 This utility model provides a flange-type lifting device for a safety blowout preventer on a pressurized work machine: it includes a main lifting point disc 2, on which annular lifting lugs 1 and mounting grooves 5 are respectively provided. There are four annular lifting lugs 1 and four mounting grooves 5, and the four annular lifting lugs 1 and four mounting grooves 5 are staggered. Each of the four annular lifting lugs 1 is slidably fitted with a mounting pin 6, and the outer end of each of the four mounting pins 6 is rotatably fitted with a U-shaped ring 3. A steel ring groove protective protrusion 4 is fixedly connected to the lower end face of the main lifting point disc 2.

[0028] The aforementioned structure ensures that the lifting point of the blowout preventer (BOP) is positioned above its center of gravity, allowing for stable lifting for wellhead installation or removal. This not only ensures safe and efficient lifting but also prevents stress concentration caused by improper lifting, which could damage the BOP or even lead to tipping over and injury. It features a simple structure, high on-site operability, and strong practicality, resulting in a highly efficient and safe lifting operation.

[0029] The main lifting point disc 2 is provided with a storage slot 11. The number of storage slots 11 is the same as the number of annular lifting lugs 1. Each of the four annular lifting lugs 1 is fixedly sleeved with a fixed shaft 12 at the end away from the mounting pin 6. The four fixed shafts 12 are rotatably connected in the four storage slots 11. The number of steel ring groove protective protrusions 4 is the same as the number of annular lifting lugs 1. The multiple steel ring groove protective protrusions 4 are distributed below the annular lifting lugs 1. By providing storage slots 11, it is convenient to put the annular lifting lugs 1 into the storage slots 11 when storing or transporting the main lifting point disc 2, so as to facilitate the relatively stable stacking of the two main lifting point discs 2.

[0030] Each of the four mounting pins 6 has a limiting groove at one end. The upper and lower outer walls of the four limiting grooves are provided with grooves. The upper and lower inner walls of the grooves are fixedly connected to slide rods 8. The outer walls of the slide rods 8 are slidably connected to sliders 9. A limiting block 10 is fixedly connected between two adjacent sliders 9. The outer ends of the slide rods 8 are movably sleeved with springs 13. The springs 13 are fixedly connected between the sliders 9 and the inner walls of the grooves. The limiting block 10 is slidably set in the limiting groove. The upper end face of the limiting block 10 is made of a bevel structure. Through the elastic force of the spring 13, the slider 9 can be driven to a predetermined position, thereby ensuring that the limiting block 10 can protrude from the limiting groove in its natural state, preventing the locking nut 7 from coming off the mounting pin 6 after installation.

[0031] By using a flange-type lifting device to assist in the lifting and unloading of the safety blowout preventer, the lifting and unloading work of the safety blowout preventer can be completed in a shorter time, improving construction efficiency. Moreover, the blowout preventer body is not subjected to axial and radial tensile stress, which does not affect the quality of the blowout preventer body. Furthermore, the entire lifting and unloading process is clear, orderly, safe and standardized.

[0032] Working principle: Four mounting slots 5 for screw rods to pass through are set on the main lifting point disc 2. The screw rods are then connected to the flange of the safety blowout preventer of the pressurized equipment. Nuts are then installed at the lower end of the screw rods for limiting and fixing. In addition, the steel ring groove protective protrusion 4 below the main lifting point disc 2 can effectively prevent rigid contact between the steel ring groove and the lifting plate, effectively protecting the integrity of the steel ring groove. After the main lifting point disc 2 is fixed to the flange surface, the U-shaped ring 3 is installed on the annular lifting lug 1. Specifically, the mounting pin 6 is passed through the U-shaped ring 3 and the annular lifting lug 1 respectively, and a locking nut 7 is screwed on the other end. Since one side of the limiting block 10 is inclined... When installing the locking nut 7, it is convenient to press the limit block 10 to slide and retract into the limit groove. After the locking nut 7 has moved a certain distance, the slider 9 will drive the limit block 10 to reset under the reset action of the spring 13, thereby forming a block against the locking nut 7 and preventing it from falling out of the installation pin 6. Then, the steel wire rope that has passed the quality inspection and meets the rated lifting tonnage requirements passes through the arc section of the U-shaped ring 3, and the four steel wire ropes are hung on the hook together with the horizontal plane of the main lifting point disc 2 at a 45° angle, so as to keep the lifting point and the center of gravity of the safety blowout preventer on the same vertical line, so that the lifting process can be safe, stable, efficient and convenient.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flange type lifting device for a blowout preventer of a pressurized machine safety device, comprising a main lifting point disc (2), characterized in that: The main lifting point disc (2) is provided with annular lifting lugs (1) and mounting grooves (5), the number of the annular lifting lugs (1) and the mounting grooves (5) is four, the four annular lifting lugs (1) and the four mounting grooves (5) are staggered, the four annular lifting lugs (1) are slidably connected with mounting pins (6), the outer ends of the four mounting pins (6) are rotatably connected with U-shaped rings (3), and the lower end surface of the main lifting point disc (2) is fixedly connected with steel ring groove protection protrusions (4).

2. A flange type lifting device for a blowout preventer stack with a pressurized stack according to claim 1, characterized in that: The main lifting point disc (2) is provided with annular lifting lugs (1) and mounting grooves (5), the number of the annular lifting lugs (1) and the mounting grooves (5) is four, the four annular lifting lugs (1) and the four mounting grooves (5) are staggered, the four annular lifting lugs (1) are slidably connected with mounting pins (6), the outer ends of the four mounting pins (6) are rotatably connected with U-shaped rings (3), and the lower end surface of the main lifting point disc (2) is fixedly connected with steel ring groove protection protrusions (4).

3. A flange type lifting device for a pressure work machine safety preventer according to claim 1, characterized in that: The four mounting pins (6) are provided with limiting grooves at one end, recesses are formed in the upper and lower outer walls of the four limiting grooves, a plurality of sliding rods (8) are fixedly connected between the upper and lower inner walls of the recesses, a plurality of sliding blocks (9) are slidably connected to the outer walls of the sliding rods (8), and limiting blocks (10) are fixedly connected between adjacent two sliding blocks (9).

4. A flange type lifting device for a press operation machine safety preventer according to claim 3, characterized in that: The outer ends of the plurality of sliding rods (8) are movably connected with springs (13), and the plurality of springs (13) are fixedly connected between the sliding blocks (9) and the inner walls of the recesses.

5. A flange type lifting device for a press operation machine safety preventer according to claim 3, characterized in that: The limiting block (10) is slidably arranged in the limiting groove, and one side of the upper end surface of the limiting block (10) is made of an inclined surface structure.

6. A flange type lifting device for a blowout preventer stack with a press operation machine according to claim 1, characterized in that: The number of the steel ring groove protection protrusions (4) is the same as that of the annular lifting lugs (1), and the plurality of steel ring groove protection protrusions (4) are arranged below the annular lifting lugs (1).

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