Wire-passing structure for small flow rate center flow-concentrating flowmeter of oil field

Abstract

The invention discloses a wire-passing structure for a small flow rate center flow-concentrating flowmeter of an oil field. The wire-passing structure comprises a main body for installing an electromagnetic flowmeter, and the main body is internally provided with a water passing hole penetrating the upper and lower end faces. A water outlet communicating with the water passing hole is formed in the side wall, close to the lower end of the water passing hole, of the main body, and a wire-passing steel pipe penetrating through the upper and lower ends of the water passing hole and used for threading is arranged in the water passing hole in a sleeved mode. An annular liquid flow passage is formed between the outer wall of the wire-passing steel pipe and the inner wall of the water passing hole. The outer walls of the upper and lower ends of the wire-passing steel pipe are separated from the liquid flow passage through a sealing structure. According to the wire-passing structure for the flowmeter, the wire-passing steel pipe is adopted to pass through a high-pressure zone in the water passing hole, and then an electric wire passes through the wire-passing steel pipe to divide the outerand inner space of the wire-passing steel pipe into high and low pressure zones, so that it is realized that the space is divided and a wire-passing passage is stable and strong, and the wire is notdirectly subjected to pressure bearing. The wire-passing steel pipe is installed once, the electric wire can be threaded for multiple times without damage, and the wire-passing structure is easy to disassemble and assemble and convenient to maintain.

Description

technical field [0001] The invention relates to a line-passing structure, in particular to a line-passing structure for a small-flow center-collection flowmeter in an oil field. Background technique [0002] The collecting flowmeter is that the liquid flow from the oil pipe through the collecting umbrella or through the water inlet flows through the central water hole of the collecting flowmeter during water injection, and then the electromagnetic flowmeter measures the flow through the central water hole. Liquid flow rate, calculated flow rate. With the different use requirements of the flowmeter, the access of the collecting umbrella or circuit section or other ends to be installed at the upper and lower ends of the central collecting flowmeter requires that the central collecting flowmeter not only be able to measure the flow rate but also be able to pass through. The more common method is to use the soft wire welding sealing plug to match the sealing rubber sleeve to pl...

AI Technical Summary

Problems solved by technology

With the different use requirements of the flowmeter, the access of the collecting umbrella or circuit section or other ends to be installed at the upper and lower ends of the central collecting flowmeter requires that the central collecting flowmeter not only be able to measure the flow rate but also be able to pass through. The more common method is to use the soft wire welding sealing plug to match the sealing rubber sleeve to plug in the water channel of the central collector flowmeter, so the soft wire can only be directly connected in the flow channel, so there are serious problems : Both the flexible wire and the joint are soaked in the water hole filled with high-pressure liquid and connected with the oil pipe. When the sealing plug and the matching sealing rubber sleeve exceed 50MPa, the reliability of the sealing plug and the matching sealing rubber sleeve is reduced, and short circuit is easy to occur; the flexible wire plus the sealing plug and The sealing rubber sleeve requires that two more secondary lines must be connected, because the isolation of the high and low voltage areas must be maintained, which has caused another problem, that is, too many combinations of sealing plugs and rubber sleeves are easy to cause lesions, and there may be more There are many water leakage points, and there are many key control points

Images