What Is a Rotary Tool?

The spinner is usually used with containers such as fork-type hoppers to quickly turn the contents of the container 360 degrees. Smelting and casting, etc. Any industry that requires flipping of containers such as hoppers. Must be equipped with a mobile forklift to use.

Overview

In recent years, with the increasing number of highly deviated wells, horizontal wells and deep pumping wells in Liaohe Oilfield, the phenomenon of eccentric wear of sucker rods and downhole tubing in oil wells has become more and more common. The number of pump inspection operations caused by eccentric wear and leakage of oil pipes is also increasing. Although the use of sucker rod centralizers and eccentric wear-resistant wear-resistant sucker rod couplings has prolonged the service life of sucker rods, with the increase of production time, The phenomenon of oil pipe leaking due to partial wear has not changed [l].

Conventional manual rod type tubing rotator

1.Structural principle

Aiming at the leakage caused by the partial wear of the tubing, starting in 2006, Liaohe Oilfield independently developed a manual rod type tubing rotator. Its structure is shown in Figure 1. The rotator is mainly composed of a lifting joint, a pressure cap, a turbine, a housing, an oil pipe, a bearing, a pressure rod, a key, a bearing seat, a scroll rod, a driving wheel cover, a shaft cover, a spring, a driving wheel and the like. The device is driven by manual pressing, and the tubing is slowly rotated by adjusting the handle to transmit the partial wear of the rod pipe to the entire inner wall of the 3600 tubing, and the tubing rotates every time it is pushed down 1 ^. It avoids the phenomenon of long-term friction between the sucker rod coupling and a fixed position on the inner wall of the oil pipe for a long time, which makes the uneven wear of the sucker rod and the inner wall of the oil pipe more uniform, and prolongs the service life of the oil pipe. However, the device needs to manually push down the drive rod each time the oil pipe is rotated, which increases the labor intensity of the workers, and the device needs to rotate 3 ~ 5 per week ^. , Also increases management intensity.

2.Technical parameters

Working pressure: 21MPa; diameter: 62mm; working temperature: 0 ~ 120 ^. C; Hanging load: 60t (12 load balls each 5t).

introduction

Faraday rotator is a device that uses the Faraday effect to rotate the polarization state of light. It is one of the important devices in quasi-optical isolators. It is often used in low-loss quasi-optical beam waveguide feed network systems. The Faraday rotator and polarized wire grid work together to achieve signal isolation between the transmit and receive channels.

The basic principle of the transmissive Faraday rotator is that each time the beam passes through the rotator, the polarization state is rotated by 45 °. If the transmitted polarization is horizontal, the electromagnetic wave is transmitted through the Faraday rotator and rotated by 45 ° after the reflected wave is transmitted through the Faraday rotator, and the polarization is rotated by 45 ° again to become vertical polarization. Isolation of transmitted and received signals is achieved by polarized wire grid reflection. The simulation results show that the Faraday rotator has high matching degree, small standing wave and high transmittance.

Design and Analysis of Feed Horn

The Faraday rotator and the polarized wire grid form a quasi-optical isolator to realize signal isolation between the receiving and transmitting channels. It is another key component in the W-band quasi-optical transmission system. When a linearly polarized wave travels on a ferrite that is parallel to the magnetization and has a uniform thickness d, the main axis of the polarized wave will rotate a certain angle . The device designed based on this principle is a Faraday rotator.

Among them, d is the ferrite thickness, 4MS ferrite saturation magnetization, is the spin ratio, = 2.21 × 105rad / s / A / m, and f is the relative dielectric constant of the ferrite. The schematic diagram of the Faraday rotator is shown in Figure 1.

In this system, the Faraday rotator is designed to be transmissive, and each time the beam is transmitted through the ferrite, the polarization state is rotated by 45 °. If the transmission polarization is horizontal, the polarization state is rotated by 45 ° after passing through the Faraday rotator. After the echo reflected by the target is transmitted again through the Faraday rotator, the polarization state is rotated by 45 ° again to become vertical polarization. The polarization wire grid reflection isolates the transmitted signal from the received signal.

Feed Horn Simulation Results and Results Analysis

A model of the relationship between the overall reflection and transmission coefficients of layered media and the electromagnetic parameters and geometric dimensions of each layered coal of the Faraday rotator was established. The rotation angle and insertion loss of the device can be further calculated by using the transmission coefficients of the main polarization and the cross polarization.

Several ferrite materials are currently available, and the ferrite materials are sintered using a mold of 100mm × 100mm × 3mm. In order to verify the basic performance of magnetic materials, preliminary tests were performed at Ka band 26.5GHz to 40GHz.

A transmissive Faraday rotator designed for a quasi-optical beam waveguide feed network is designed. Simulation results show that the transmissive Faraday rotator has the advantages of high matching degree, small standing wave in the system, and high transmittance. ^[2]