RU2004490C1 - Plant for removal and transportation of viscous deposits of oil products - Google Patents

Abstract

Usage: in the oil industry, for example, when transporting various kinds of liquids containing non-fluid viscous deposits. Summary of the invention: the working fluid is fed through a pipeline to an ejector and a turbine. In the ejector, the jet of working fluid creates a rarefaction, draws water along with the oil from the surface of the reservoir through the intake device and, under pressure, delivers it to the screw pump. The turbine is rotated through the manifold, pumping fluid to the pump outlet. The working fluid that has been pumped into the turbine Zil.

Description

The invention relates to the oil industry and can be used in the transportation of various kinds of liquids containing non-fluid viscous deposits, in particular from the surface of water bodies.

A known apparatus for removing and transporting viscous deposits of petroleum products from ship tanks, comprising a centrifugal pump with an electric motor, which is usually mounted on the lid of the tank and connected to the pump using a long rod for ensuring fire safety.

However, the flow part of the plant pump is quickly clogged by viscous deposits. In addition, due to the large length of the connecting rod that transmits torque from the electric motor to the pump, increased vibrations occur that reduce reliability.

A device is known for removing non-fluid bottom sediments from shipboard oil storage tanks, comprising an ejector with a suction device and a working fluid pipe. The device makes it possible to break up viscous deposits with water and transport them together with water to oil sumps.

However, such a device has insufficient outlet pressure and is unsuitable for transporting bottom sediments through hatches in the upper part of the tanks. The head of these devices is 4 m and the height of the tanks is 8 m.

The aim of the invention is to increase the head, productivity and reliability of the installation.

The goal is achieved due to the fact that in an installation containing an ejector, a suction device, a working fluid pipeline, a screw pump with a hydraulic turbine is installed coaxially to the outlet of the ejector, the working vanes of which are located on the pump wheel retainer, and the turbine inlet manifold is connected to the working fluid pipeline. Moreover, the intake device is made either in the form of a slotted radial-axial channel, or in the form of a truncated torus.

The connection of the ejector with an axial pump and a hydraulic turbine provides a higher head, allows non-fluid residues to be transported along with the liquid to a greater height and distance, and the productivity and reliability of the installation are increased. The combination of an axial pump with an ejector makes it possible to pump out a mixture of water with oil residues without clogging the flow part, as happens with a centrifugal pump. Thanks to the use of an axial pump, it was possible to carry out the working blades of a hydraulic turbine on the band of the axial pump wheel in a single

monoblock, which ensures reliable operation of the chassis without additional connections (couplings, springs, etc.) of the turbine and pump rotors. Various embodiments of the intake device allow

place the latter on the surface of the reservoir in the right direction.

In FIG. 1 shows a longitudinal section through the apparatus; in FIG. 2 is an embodiment of a slotted radial-axial intake device;

in FIG. 3 is a variant of the intake device in the form of a truncated torus.

An apparatus for removing and transporting viscous deposits of oil products contains an ejector 1 with a suction device 2 and a working fluid pipe 3. At the outlet 4 of the ejector 1, a screw pump 5 with a hydraulic turbine 6 is installed coaxially with its working blades located on the bandage 8 of the wheel 9 of the pump 5. The inlet manifold 10 of the turbine 6 is connected to the pipeline of the working fluid 3. The intake device 2 can be made in the form of a slotted radial-axial channel 11 (Fig. 2) or in the form of a truncated torus 12 (Fig. 3).

Installation works as follows. The working fluid (for example, fire water) is fed through a pipe 3 to an ejector 1 and a hydraulic turbine 6. In an ejector 1, a jet of working fluid creates a vacuum and sucks water along with oil products from the surface of the reservoir through the intake device 2, and then delivers it at the outlet 13 into the screw pump 5. When the working fluid is supplied to the hydraulic turbine 6 through the collector 7, the hydraulic turbine is rotated, and with it the screw pump 5, pumping the mixture of liquid with oil residues to the outlet 14 of pump 5. The working fluid flows there, from worked in a hydroturbine 6.

When using the intake device in the form of a slotted radial-axial channel, the latter is positioned

across the surface of the reservoir, and in the form of a truncated torus along the surface of the reservoir.

An experimental sample of such a setup was tested under field conditions.

at the sludge ponds of the oil mixing station and showed the following characteristics:

-productivity Q 0.015 m3 / s;

- head H 15 m;

a rotational speed of 2000 rpm;

working fluid flow to the ejector

 P PLC .j3 / оОе - 0.005 MJ / C:

Thus, the above device has higher performance than the prototype.

- the flow rate of the working fluid to the turbine Qrr 0,011 m3 / s:

-pressure of the working fluid on the hydro- 5 (56) Copyright certificate of the USSR turbine РГт 0.6 - 1.2 MPa№ 1214523, class. B 63 B 57/02, published. 1986.

Thus, the above device has higher performance than the prototype.

Claims (3)

1. INSTALLATION FOR REMOVING AND TRANSPORTING VISCOUS SEDIMENTS OF OIL PRODUCTS, comprising an ejector with a suction device and a pipeline for supplying working fluid, characterized in that it is equipped with a screw pump with a turbine coaxially mounted at the outlet of the ejector, the working blades of which are mounted on a turbine the outer surface of the screw, and the turbine inlet manifold is connected to a pipeline for supplying a working fluid. 2. Installation according to claim 1, characterized in that the intake device is made in the form of a curved nozzle of variable cross-section. 3. Installation according to claim 1, characterized in that the intake device is made in the form of a truncated torus 20. Entrance of the working life to the kos and giZroturdin u s o l l oh oh FIG 2 I ixo FIG.