At present, the proportion of workover in my country is increasing, and the part of workover wellhead equipment, that is, workover elevator, is also related to the economic and social benefits of each well. However, most of the elevators currently used for workover are manual elevators, which makes the on-site operation labor-intensive.
In addition, the insurance settings for the power insurance mechanism are single, and it is easy to cause the elevator to accidentally open the suspension structure during work due to one mis operation., which poses a great threat to personal and property safety. In addition, because the pipe string has a variety of pipe diameters, the applicability of the elevator in the multi-diameter pipe string is limited.
Therefore, in view of the above defects, it is necessary to effectively innovate the existing technology.
Elevator is an important part of workover operation. At present, manual operation is widely used to replace elevator and leads to high labor intensity and poor working environment with potential safety hazard.
A Chinese enterprise has invented a kind of elevator with complex design and bulky volume. The guiding ability of the flexible guiding mechanism is unstable when the elevator is up and down, also the sand washing swivel lacks the limit device.
In this regard, San Jack invented a multifunctional elevator which has simple structure, light weight and swivel limit device. Its components include double-arm ring 1, sand washing swivel 2, reducer 4, back-up tong 5, upper hanging plate 9, lower hanging plate 6, power elevator 7 and bearing ring shaft 11. The swing-arm oil cylinder is installed between the upper and lower hanging plate and the lower hanging plate is turned over through the expansion and contraction of the oil cylinder.
A guiding mechanism is set on the side of the upper hanging plate to enhance the overall guiding stability of the elevator. The bearing ring shaft adopts a hollow structure, which reduces the weight of the elevator. A limit device is installed on the neck of the sand washing swivel, which not only limits the vertical displacement but also prevents the rotation of the sand washing swivel.
The rotation limiting structure of the rotary faucet at least includes a faucet, a base located at the bottom of the faucet, a pin located below the base, a joint connecting the faucet, the base and the pin, and the inner wall of the base is provided with a boss , There are two limit blocks on the pins, and a limit groove for the rotation of the boss is formed between the two limit blocks; the connection between the base and the water nozzle is provided with a limit structure that cooperates with each other, The base and the pin are provided with an alignment structure that cooperates with each other.
The base is rotated by rotating the water nozzle, and the boss on the base is accommodated by the limit groove on the pin, so as to realize the effect of the rotation limit. The utility model not only Simple structure and easy installation.
The utility model discloses a multifunctional elevator device, which belongs to the technical field of oil field workover operation equipment. It includes a double-arm lifting ring, a sand flushing tap, a reducer, a back clamp, an upper hanging plate, an F hanging plate, a power elevator, and a bearing ring shaft. A swing arm oil cylinder is installed between the upper hanging plate and the F hanging plate. The oil cylinder is telescopic to realize the flip of the F hanging plate.
There is a guiding mechanism on the side of the upper hanging plate, which enhances the overall guiding stability of the elevator. The design of the bearing ring shaft adopts a hollow structure, which reduces the weight of the elevator. The neck is equipped with a faucet limit device, which not only limits the vertical displacement of the sand faucet, but also prevents the rotation of the sand flushing faucet. The utility model has the advantages of simple structure, light weight, stable position limit of the faucet, and improves the safety and reliability of the operation.
The utility model with a stable swivel limit has a simple structure and lightweight, reducing operation difficulty and improving operational reliability.
