CN215672700U

CN215672700U - Screw compressor for oil field drilling

Info

Publication number: CN215672700U
Application number: CN202120474262.7U
Authority: CN
Inventors: 孙国杰; 张永涛; 边勇; 刘廷琪; 赵荣; 袁猛
Original assignee: Henan Yatongxuan Machinery Equipment Co ltd
Current assignee: Henan Yatongxuan Machinery Equipment Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2022-01-28
Anticipated expiration: 2031-03-04

Abstract

The utility model provides a screw compressor for oilfield drilling, which comprises a host, an internal motor, an air inlet system, an exhaust system, a cooling system, an air flow adjusting system, an instrument panel, a cooler, an oil-gas separator and a box body. The lower part of the box body is a box body base, a host machine seat is arranged on the box body base, a host machine is arranged on the host machine seat, a motor seat is arranged on the box body base, and a motor is arranged on the motor seat. The middle part of the box body is provided with a door plate, the upper part of the door plate is arranged to be an instrument area, an instrument board is installed, and the box body is provided with an oil level display meter, a pressure meter and a thermometer.

Description

Screw compressor for oil field drilling

Technical Field

The utility model belongs to the technical field of compressors, and particularly relates to a screw compressor for oilfield drilling.

Background

With the rise of high and new technology industries in China, the requirement on the quality of compressed air is higher and higher, and the existing air compressor field mainly adopts a piston type air compressor and a screw type air compressor, and the screw type air compressor is divided into a double-screw air compressor and a single-screw air compressor.

The existing screw air compressor is mostly powered by the outside, and a motor is additionally arranged for the screw air compressor to serve as a power source, so that the screw air compressor is not suitable for occasions with limited sites. Due to the limitation of the screw air compressor principle, the cooling time is short after the pressurization of the gas is finished, and the long-term high internal temperature directly influences the whole service life of the compressor. Because the separation of oil and gas needs to be carried out before the screw air compressor outputs compressed gas, the selection of a separation mode and a cooling and filtering mode after separation is also a problem to be considered by production enterprises.

SUMMERY OF THE UTILITY MODEL

The utility model provides a screw compressor for oilfield drilling, aiming at the problem that a screw compressor needs to be perfect. The mode that the motor is built-in is adopted, an external motor does not need to be additionally configured for the air compressor, and the air compressor is suitable for occasions with limited sites. The cooling system of the screw air compressor with the built-in power source adopts a mode of combining air cooling and water cooling, so that the cooling speed of oil and compressed air is increased, and meanwhile, the automatic control requirements on the pressure of an air outlet and the air input of a host can be met.

The utility model adopts the following technical scheme for solving the technical problems: a screw compressor for oilfield drilling comprises a host, a built-in motor, an air inlet system, an exhaust system, a cooling system, an air flow adjusting system, an instrument panel, a cooler, an oil-gas separator and a box body, wherein the lower part of the box body is a box body base, the box body base is provided with a host base on which the host is arranged, the box body base is provided with a motor base on which the host is arranged, the motor base is provided with the built-in motor, the built-in motor provides power for the host, the host compresses input air, the upper part of the host is provided with an air inlet valve, the other port of the air inlet valve is connected with an air filter, the host is connected with the oil-gas separator through a pipeline, the oil-gas separator conveys separated oil to the cooling system through a pipeline, the cooling system comprises an air-cooled plate-fin cooler, a water-cooled shell-and tube cooler and a water-cooled shell oil cooler, an air delivery outlet of the oil-gas separator is connected with a minimum pressure valve, the minimum pressure valve is connected with an input port of the air-cooled plate fin cooler through a gas delivery pipeline, an output port of the air-cooled plate fin cooler is connected with an input port of the water-cooled shell-and-tube cooler through a pipeline, the output port of the water-cooled shell-and-tube gas cooler is connected with the water-gas separator through a gas transmission pipeline, compressed air treated by the water-gas separator is output to the outside of the box body through a gas transmission port, the oil delivery port of the oil-gas separator is connected to the input port of the air-cooled plate-fin cooler through an oil delivery pipeline, the output port of the water-cooled tube-shell oil cooler is connected with one end of a temperature control valve, the other end of the temperature control valve is connected with a host through an oil filter, the box middle part is equipped with the door plant, and the upper portion of door plant sets up to the instrument district, installs the instrument board, is equipped with oil level display meter, manometer, thermometer, makes things convenient for operating personnel to master the actual behavior of equipment.

Furthermore, the built-in motor provides power for the main machine, and the main machine compresses the input air.

Furthermore, air intake system includes air cleaner, admission valve, the host computer is connected to the one end of admission valve, and air cleaner is connected to the other end of admission valve.

Furthermore, the main engine is connected with the oil-gas separator through a pipeline, the oil-gas separator separates oil-gas mixed gas, and separated oil and compressed air are respectively conveyed to a cooling system for cooling.

Further cooling systems include air-cooled plate fin coolers, water-cooled shell and tube oil coolers and pipes. An air delivery outlet of the oil-gas separator is connected with a minimum pressure valve, the minimum pressure valve is connected with an input port of the air-cooled plate fin cooler through a gas delivery pipeline, an output port of the air-cooled plate fin cooler is connected with an input port of the water-cooled shell-and-tube cooler, and an output port of the water-cooled shell-and-tube cooler is connected with an exhaust system. An oil delivery port of the oil-gas separator is connected to an input port of the air-cooled plate-fin cooler through an oil delivery pipeline, an output port of the air-cooled plate-fin cooler is connected with an input port of the water-cooled shell-and-tube oil cooler through a pipeline, an output port of the water-cooled shell-and-tube oil cooler is connected with one end of a temperature control valve, and the other end of the temperature control valve is connected with a host through an oil filter.

The further exhaust system consists of a water-gas separator and a pressure regulating valve, and compressed air output by the air-cooled plate-fin cooler is processed by the water-gas separator and then output to the outside of the box body through the pressure regulating valve.

Furthermore, the middle of the box body is provided with the door plate, the upper portion of the door plate is provided with the instrument panel, the pressure of oil level and output compressed air, the temperature of the compressed air and the temperature of lubricating oil can be displayed, and operators can conveniently master the actual operation condition of the equipment.

Drawings

The utility model is described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of the internal structure of the box body of the utility model.

Fig. 2 is a front schematic view of the box body of the utility model.

Figure 3 is a schematic side view of the case of the utility model.

The components and their numbering in the figures: 1 a box base; 2-a main machine seat; 3, a host; 4 an oil filter; 5 a temperature control valve; 6, an oil-gas separator; 7 a minimum pressure valve; 8 a water-cooled shell and tube gas cooler; 9 a water-cooled shell and tube oil cooler; 10 an air-cooled plate-fin cooler; 11 an air outlet; 12-a pressure regulating valve; 13 a water-gas separator; 14 a built-in motor; 15 an air filter; 16 a motor base; 17 an air intake valve; 18 an adjustment controller; 19 an instrument panel; 20 a door panel; 21 a cable inlet hole; 22 a cooling water inlet; 23 a cooling water outlet; 24 heat dissipation windows; 25 a condensed water outer connecting hole; 26 an air supply pipe external hole.

Detailed Description

In order to clearly illustrate the technical features of the present invention, a specific embodiment is described below with reference to the accompanying drawings.

The utility model is further described with reference to the following figures and detailed description.

As shown in fig. 1, the screw air compressor with a built-in power source comprises a box body, a box body base 1 and a main machine 3, wherein the main machine 3 is fixed on a main machine base 2. An air inlet valve 17 and an air filter 15 are arranged above the main machine 3; the air filter 15 is provided with an air inlet. The main unit 3 is directly connected to the built-in motor 14, and the main unit is driven by the built-in motor 14. A cooling system fixing support is arranged behind the main machine 3, and a water-cooled shell-and-tube cooler 8, a water-cooled shell-and-tube oil cooler 9 and an air-cooled plate-fin cooler 10 are mounted on the fixing support; the left side of the main machine 3 is provided with an oil-gas separator 6, a minimum pressure valve 7 is arranged above the oil-gas separator 6, the minimum pressure valve 7 is connected with an air inlet of an air-cooled plate fin cooler 10 through a pipeline, an air outlet of the air-cooled plate fin cooler 10 is connected with an input port of a water-cooled tube shell air cooler 8, the left side of the water-cooled tube shell air cooler 8 is provided with a water-gas separator 13, the water-gas separator 13 is connected with a left pressure regulating valve 12 of the water-gas separator, and the pressure regulating valve 12 is directly connected with an air supply pipe connecting hole 26. A temperature control valve 5 is arranged in the middle of the oil-gas separator 6, and an upper side oil inlet of the temperature control valve 5 is connected with an output port of the 10 water-cooled shell-and-tube cooler through a pipeline 9, and an input port of the water-cooled shell-and-tube cooler is connected with an oil outlet of the 10 air-cooled plate-fin cooler; an oil filter 4 is installed at an oil outlet on the side surface of the temperature control valve 5, the oil filter 4 is directly connected with the host 3, and an adjusting controller 18 is installed and placed on the box body base 1.

As shown in fig. 2, a front view of a casing of a screw air compressor with a built-in power source, a door panel 20 is arranged in the middle of the front of the casing, an instrument panel 19 is arranged on the upper region of the door panel 20, and a cable inlet hole 21 is formed in the lower portion of the right region of the door panel 20.

As shown in fig. 3, a side view of a casing of a screw air compressor with a built-in power source, the side of the casing is distributed with a heat radiation window 24, a cooling water inlet 22 and a cooling water outlet 23 are arranged at the lower part of the left side of the casing, and a condensed water outer connecting hole 25 and an air supply pipe outer connecting hole 26 are arranged at the lower part of the right side.

In the present embodiment, the cooling system includes a water-cooled shell-and-tube cooler 8, a water-cooled shell-and-tube oil cooler 9, and an air-cooled plate-fin cooler 10.

In the present embodiment, the control system includes the regulator controller 18 and the pressure regulating valve 12.

In the present embodiment, the intake system includes an intake valve 17 and an air filter 15.

In the present embodiment, the exhaust system includes an air-water separator 13, a pressure regulating valve 12, and an air outlet 11.

The specific implementation process comprises the following steps:

the cable enters the box body from the cable inlet hole 21 to provide power for the built-in motor 14, the built-in motor 14 provides power for the main machine 3 after being started, and the main machine 3 performs air compression operation. Lubricating oil enters a main engine 3 through an oil filter 4, and the oil filter 4 has the function of removing impurities in the oil, such as metal particles, oil degradation products and the like, so that the protection effect on a bearing and a rotor is realized; the outside air enters the main machine 3 through the air inlet valve 17 after being filtered by the air filter 15; after the oil-gas mixture is compressed by the main machine 3, the oil-gas mixture enters the oil-gas separator 6 from an exhaust port of the main machine 3.

The oil-gas separator 6 firstly sends the separated air into the air-cooled plate-fin cooler 10 through the minimum pressure valve 7, then sends the air into the water-cooled tube-shell air cooler 8 again after air cooling, enters the water-gas separator 13 after accelerated water cooling, removes the moisture in the compressed air, finally outputs the air to the outside of the box body through the pressure regulating valve 12, and enters the use system of a user through the air supply pipe outer connecting hole 26. The oil separated through the oil separator 6 is deposited in the lower portion of the oil storage tank. Then the heated lubricating oil is forced by gas pressure to be accelerated and cooled by an air-cooled plate-fin cooler 10 and a water-cooled tube-shell oil cooler 9, the cooled lubricating oil enters the bottom of the main machine through a temperature control valve 5 and an oil filter 4 and is mainly used for lubricating, cooling and sealing a rotor, the lubricating oil is mixed and compressed with external air again in the main machine 3, and the temperature of the lubricating oil is continuously increased and reduced in a compressor system to realize reciprocating circulation. The temperature control valve 5 is mainly used for ensuring that the oil temperature is at the optimal working temperature, is fully opened when the temperature is lower than 170 ℃, and is fully closed when the temperature is higher than 170 ℃, so that the quality of the oil is ensured, and the condensate water is prevented from appearing too early.

If the continuous and stable work of the main engine is ensured, the air inflow and the air outlet pressure of the main engine 3 need to be automatically adjusted. The adjusting controller 18, the air inlet valve 17 and the pressure regulating valve 12 form an automatic control system for the air quantity of the compressor. After the compression process is finished, the cooled compressed air enters the pressure regulating valve 12 through the water-gas separator 13, when the exhaust pressure reaches the rated pressure, the pressure regulating valve 12 outputs the compressed air, the air suction port of the air inlet valve 17 is closed, and the main machine 3 stops sucking the air. When the exhaust pressure reaches the lower limit value of the rated pressure, the pressure regulating valve 12 is closed to suspend the supply of the compressed air to the outside, the air inlet port 17 is opened to supply the outside air to the main unit 3, and the main unit 3 restarts the air suction. The automatic control is continuously carried out in cycles.

If the oil temperature after cooling and the temperature of the compressed air meet the requirements, the flow rate of cooling water and the rotating speed of a fan need to be automatically adjusted and controlled, and an automatic cooling temperature control system is formed by the adjusting controller 18, the water-cooled shell-and-tube cooler 8, the water-cooled shell-and-tube oil cooler 9 and the air-cooled plate-fin cooler 10. In the cooling process, oil liquid and compressed air are firstly cooled by an air-cooled plate-fin cooler 10, and if the temperature is still higher than a set value after air cooling, cooling water in a water-cooled shell-and-tube air cooler 8 and a water-cooled shell-and-tube oil cooler 9 is controlled to be started for secondary cooling; if the temperature after air cooling meets the set value, the cooling water in the water-cooled cooler does not need to be started. According to the cooled temperature, the cooling water is automatically controlled to be started, so that the cooling speed is accelerated while the cooled temperature is ensured to meet the requirements.

The above-mentioned preferred embodiments are further described in detail for the purpose of illustrating the utility model, it should be understood that the above-mentioned embodiments are only illustrative of the preferred embodiments of the present invention, and are not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention. Although illustrative embodiments of the present invention have been described above to facilitate the understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein.

Claims

1. A screw compressor for oilfield drilling is characterized by comprising a host, a built-in motor, an air inlet system, an exhaust system, a cooling system, an air flow adjusting system, an instrument panel, a cooler, an oil-gas separator and a box body, wherein the lower part of the box body is a box body base, a host base is arranged on the box body base, the host is arranged on the box body base, a motor base is arranged on the box body base, the built-in motor is arranged on the motor base, the built-in motor provides power for the host, the host compresses input air, an air inlet valve is arranged on the upper part of the host, the other port of the air inlet valve is connected with an air filter, the host is connected with the oil-gas separator through a pipeline, the oil-gas separator conveys separated oil to the cooling system through a pipeline, the cooling system comprises an air-cooled plate fin cooler, a water-cooled shell-and tube cooler and a water-cooled shell-oil cooler, the oil-gas separator is characterized in that an air delivery outlet is connected with a minimum pressure valve, the minimum pressure valve is connected with an input port of an air-cooled plate-fin cooler through an air delivery pipeline, an output port of the air-cooled plate-fin cooler is connected with an input port of a water-cooled shell-and-tube cooler through a pipeline, an output port of the water-cooled shell-and-tube cooler is connected with the water-gas separator through an air delivery pipeline, compressed air processed by the water-gas separator is output to the outside of the box body through an air delivery port, an oil delivery port of the oil-gas separator is connected to the air-cooled plate-fin cooler through an oil delivery pipeline, a temperature control valve is mounted in the middle of the oil-gas separator, an output port of the water-cooled shell-and-tube cooler is connected with one end of the temperature control valve, the other end of the temperature control valve is connected with a host through an oil filter, a door plate is arranged in the middle of the box body, an instrument area is arranged at the upper part of the door plate, an instrument panel is provided with an instrument panel, an oil level display instrument panel, and a fuel level display instrument is arranged on the door, Pressure gauge and thermometer.