RU2000484C1 - Pumping plant - Google Patents

Abstract

Usage: hydraulic engineering, mainly the exploitation of oil wells. SUMMARY OF THE INVENTION: A pumping unit comprises a pumping unit with inlet and pressure lines of the pump, an oil system and an oil cooler (M). M is made in the form of a section of the inlet or pressure line as a heat exchanger like a pipe in a pipe. The input, for example, to the external manifold M is in communication with the pressure line of the oil system, and the output is connected to the lubrication cavities of the pump unit. 1 ill.

Description

The invention relates to the construction of pumping units for pumping various working fluids (water, oil, liquefied gas, etc.) and can be used in various fields of national economy, including the operation of oil wells.

Various types of pumping units are used to pump various liquid or gaseous working fluids. The pump installation comprises the pump itself and the pump drive, for example an electric motor. Each pump unit should include an oil system that provides lubrication and cooling of structural elements, primarily the bearings of the pump and electric motor.

Typically, oil systems are closed loop, i.e. after lubricating the structural elements of the installation, the oil is drained into the tank and from there it is again taken by the oil pump for the next lubrication cycle. During cyclic passage along the path, the oil temperature rises and can ultimately reach a critical value close to the temperature of thermal ignition. To prevent this, an oil cooling system is included in the oil system, typically comprising a heat exchanger to reduce oil temperature. Either water or ambient air is used as a coolant that reduces the temperature of the oil.

Also known, taken as a prototype, is a pumping unit comprising a pumping unit with inlet and pressure lines of pumps, an oil system for lubricating structural elements of the unit, an oil cooler.

The said pump installation has a number of disadvantages due to the fact that it uses an autonomous system for cooling the oil system, which degrades the economic and environmental performance of the prototype.

The aim of the invention is to increase efficiency, simplify the design of the system and ensure environmental friendliness.

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cooling process by cooling the oil system asphalt with a working fluid and a suction pump unit.

For this purpose, the oil cooler is designed as a section of the inlet or pressure line of the pump as a heat exchanger of a type, for example, a pipe in a pipe, the entrance, for example, to the external oil cooler collector, being connected to the pressure line of the asphalt system, and the output to the lubrication cavity of the pump unit.

With such a design of the pump unit, the following problems are solved.

The cost-effectiveness of the pump installation is improved by eliminating the additional coolant (gas) line with the corresponding energy costs for driving the pump of this liquid.

The design of the cooling system is simplified by reducing the number of arpeia tops serving the oil cooler: liquid tank, pump, fittings, etc. (with water cooling).

The environmental friendliness of the oil cooling process is ensured, since the process proceeds in a closed cycle without the release of a cooling agent into the environment: water, air.

As mentioned above, in existing designs of pumping units, water or atmospheric air is used to cool the lubricant (oil). For this purpose, the oil system includes units that ensure that the cooling agent is also supplied to the oil cooler: a water tank, a water pump, valves for a water-cooled system: a compressor or fan, and valves for an air-cooled system. In both cases, to drive a pump, compressor or fan, it is necessary to use an electric digester with a corresponding supply of electricity to its winding. All this, firstly, complicates the design of the oil cooling system and the pump unit as a whole, and, secondly, it increases the energy costs of the drive units that provide the supply of cooling agent to the oil system.

In addition, the passage of the cooling reagent along the cooling path with the possibility of foreign particles, oil particles entering into it and subsequent reagent introduction into the environment will lead to a deterioration of the environmental situation regarding the location of the pumping unit. The solution according to the invention is free from these drawbacks, since the cooling of the oil is ensured by heat loss account

working fluid, such as liquefied gas. passing along the pump path (inlet or pressure line). For this purpose, the inlet or pressure line of the pump is made in the form of a heat exchanger such as a pipe in a pipe or another type. The working fluid of the pump flows through the internal collector (path) of the heat exchanger, for example, liquefied gas, and the outside - oil. According to

from working conditions, layout, component costs, it is possible that the pump fluid flows through the external manifold and oil flows through the internal manifold. Thus, cooling of the oil of the oil system 5 is ensured without the expense of additional energy.

As. the working fluid entering the pump inlet must have stable pressure and temperature values under conditions of cavitation-free operation at 0 coca, then the degree of cooling of the oil by the working heat will also be stable in value.

The drawing shows the design

5 pump installation.

The pump installation includes a pump unit 1 with an inlet line 2 and a pressure line 3 of the pump 4, an oil system 5 for lubricating structural elements

0 of the unit, oil cooler 6. The input 7 to the external manifold 8 of the oil cooler is connected to the pressure line 9 of the oil system, and the output 10 to the cavities 11 of the lubrication of the pump unit.

5When the pump unit is operating in steady state, liquefied gas flows from the gas processing plant through the inlet line 2 to the pump 4 of the pump unit 1 and after increasing the pressure

The 0 stages of pump 4 along pressure line 3 go to consumers, for example, to an oil reservoir. Pump rotor drive 4 pump-. of the first unit 1 is provided with an electric motor 12.

5 The oil system 5 is used to lubricate the structural elements of the pump unit 1. In the oil system 5, mineral oil from the tank 13 is supplied through the valve 16 to the inlet to the pump 14 with an actuator (electric motor) 15 and after increasing the pressure in the pump 14 along the pressure line 9 to the oil cooler 6. Oil cooler G is made in the ond of the heat exchanger of the pipe-in-pipe type. Oil passes through the inlet 7 to the external manifold 8 of the oil cooler 6. It passes through the cooling path and through the outlet 10 it enters the lubricant cavities 11 (bearing cavities) of the pump 4 and the electric motor 12. Through the internal manifold 18 of the oil cooler 6, liquefied gas passes from the nanororm 3 of the pump 4 The oil passing through the outer manifold 8 of the oil cooler b gives off heat to the liquefied gas passing through the inner manifold 18 to the consumers,

From the lubrication cavities 11 of the pump unit 1, the oil is returned via valve 17 to the tank 13.

Claims (1)

SUMMARY OF THE INVENTION A pump installation comprising a pumping unit with inlet and pressure lines of a pump, an oil system for lubricating structural elements of an aggregate, an oil system laditrele, characterized in that. in order to increase efficiency, simplify the design of the system and ensure the environmental friendliness of the cooling process due to the cooling of the oil in the oil system by the pump body of the pump unit, the oil cooler is made in the form of a section of the inlet or pressure line of the pump as a heat exchanger of the type, for example, a pipe in a pipe, and the input, for example, into the external oil cooler manifold is in communication with the pressure line of the oil system. and the outlet is with lubrication cavities of the pump unit.