CN220354010U - Air pressurization system meeting different pressures and different air quantities - Google Patents

Abstract

The utility model discloses an air pressurizing system meeting different pressures and different air quantities, which comprises compressors and multistage coolers which are connected in a matched mode, wherein the multistage coolers comprise a first stage cooler, a second stage cooler, a third stage cooler, a fourth stage cooler and a final stage cooler, the compressors comprise a first compressor stage, a second compressor stage, a third compressor stage, a fourth compressor stage and a fifth compressor stage, the first compressor stage is connected with the first stage cooler, the second compressor stage is connected with the second stage cooler, the third compressor stage is connected with the third stage cooler, the fourth compressor stage is connected with the fourth stage cooler, the fifth compressor stage is connected with the final stage cooler, and inlet guide vanes are arranged on the first compressor stage and the fourth compressor stage air inlets to control air inflow. The air inflow required by the compressor is controlled by adjusting the angles of the inlet guide vanes of the first stage and the fourth stage of the compressor, so that the air inflow control device is suitable for working conditions of different pressures and different air flows of the compressor.

Description

Air pressurization system meeting different pressures and different air quantities

Technical Field

The utility model belongs to the technical field of air compressors, and particularly relates to an air pressurization system meeting different pressures and different air volumes.

Background

In the production process of industries such as chemical engineering, petrochemical engineering, steel, air separation and the like, an air compressor, namely an air compressor is often used for providing compressed air for production. The operation rotating speed of the large-sized air compressor is constant, and the exhaust pressure is constant under the normal working condition, so that the requirements of different pressures and different air quantities are difficult to adapt.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides an air pressurizing system meeting different pressures and different air quantities, which comprises compressors and multistage coolers which are connected in a matched manner, wherein each multistage cooler comprises a first-stage cooler, a second-stage cooler, a third-stage cooler, a fourth-stage cooler and a final-stage cooler, each compressor comprises a first compressor stage, a second compressor stage, a third compressor stage, a fourth compressor stage and a fifth compressor stage, each compressor stage is connected with the corresponding first-stage cooler, each compressor second stage is connected with the corresponding second-stage cooler, each third compressor stage is connected with the corresponding third-stage cooler, each fourth compressor stage is connected with the corresponding fourth-stage cooler, each fifth compressor stage is connected with the corresponding final-stage cooler, and inlet guide vanes are arranged on each compressor stage and each fourth compressor stage inlet to control air inflow and exhaust pressure.

Further, a first return pipeline is arranged between the three-stage cooler and the first stage of the compressor, one end of the first return pipeline is communicated with a three-stage exhaust pipeline of the three-stage cooler, and the other end of the first return pipeline is communicated with an air inlet of the first stage of the compressor.

Further, a second return pipeline is arranged between the final-stage cooler and the fourth stage of the compressor, one end of the second return pipeline is communicated with a final-stage exhaust pipeline of the final-stage cooler, and the other end of the second return pipeline is communicated with an air inlet of the fourth stage of the compressor.

Further, the first return pipeline and the second return pipeline are both provided with anti-asthma valves, and a pipeline interface of the first return pipeline is provided with a silencing pore plate.

Further, the three-stage exhaust pipeline of the three-stage cooler and the final-stage exhaust pipeline of the final-stage cooler are both provided with vent valves.

Further, a flow control valve and a gas flowmeter are arranged on a three-stage exhaust pipeline of the three-stage cooler.

Further, a flow control valve and a gas flowmeter are arranged on a primary exhaust pipeline of the primary cooler.

Compared with the prior art, the utility model has the following advantages:

(1) The air inflow and the exhaust pressure required by the compressor are controlled by adjusting the angles of inlet guide vanes of the first stage and the fourth stage of the compressor, so that the method is suitable for working conditions of different pressures and different air amounts of the compressor;

(2) Through setting up return line I between tertiary cooler and compressor one-level, set up return line II between final stage cooler and the compressor four-level, all set up on return line I and the return line II and prevent the asthma valve, effectively control and prevent that the compressor from getting into the surge operating mode, can protect high-value compressor and the whole system can not cause the shut down of whole system under the unstable operating mode of gas consumption, arouse economic loss.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a flow chart of the present utility model.

In the figure: the system comprises a 1-stage cooler, a 11-stage air inlet pipeline, a 12-stage cooling pipeline, a 13-stage exhaust pipeline, a 2-stage cooler, a 21-stage air inlet pipeline, a 22-stage cooling pipeline, a 3-stage cooler, a 31-stage air inlet pipeline, a 32-stage cooling pipeline, a 33-return pipeline I, a 34-stage exhaust pipeline, a 35-silencing orifice plate, a 4-fourth stage cooler, a 41-fourth stage air inlet pipeline, a 42-fourth stage cooling pipeline, a 5-final stage cooler, a 51-final stage air inlet pipeline, a 52-final stage cooling pipeline, a 53-return pipeline II, a 54-final stage exhaust pipeline, a 6-motor, a 7-compressor, a 71-compressor stage, a 72-compressor stage, a 73-compressor stage, a 74-compressor four stage, a 75-compressor five stage, an 8-oil station, a 9-flow control valve, a 10-unit air inlet pipeline, a 20-guide vane inlet, a 30-relief valve, a 40-antiasthmatic valve, a 50-unit exhaust outlet and a 91-gas flowmeter.

Detailed Description

An air pressurization system satisfying different pressures and different amounts of air according to the present utility model will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, an air pressurizing system satisfying different pressures and different amounts of air includes a compressor 7, a multi-stage cooler including a primary cooler 1, a secondary cooler 2, a tertiary cooler 3, a quaternary cooler 4, and a final cooler 5, a compressor 7 including five stages, wherein a compressor stage 71 is connected to the primary cooler 1, a compressor stage 72 is connected to the secondary cooler 2, a compressor stage 73 is connected to the tertiary cooler 3, a compressor fourth stage 74 is connected to the quaternary cooler 4, and a compressor fifth stage 75 is connected to the final cooler 5, inlet guide vanes 20 are provided at each of the compressor stage 71 and the compressor fourth stage 74, and an intake air amount and an exhaust pressure are controlled by an angle of the inlet guide vanes 20; and a first return pipeline 33 is arranged between the three-stage cooler 3 and the first compressor stage 71 (namely, a third-stage exhaust pipeline 32 of the three-stage cooler 3 is communicated with an air inlet of the first compressor stage 71), a second return pipeline 53 is arranged between the final-stage cooler 5 and the fourth compressor stage 74 (namely, a final-stage exhaust pipeline 52 of the final-stage cooler 5 is communicated with an air inlet of the fourth compressor stage 74), an anti-surge valve 40 is arranged on each of the first return pipeline 33 and the second return pipeline 53, and a silencing orifice plate 34 is arranged at a pipeline interface of the first return pipeline 33.

In addition, a flow control valve 9 and a gas flowmeter 91 are arranged on a primary exhaust pipeline 13 (the primary exhaust pipeline 13 is communicated with a secondary air inlet pipeline 21 of a compressor secondary 72) of the primary cooler 1, gas flow parameters are uploaded to a DCS control system, the DCS controls the adjusting angle of a primary 71 inlet guide vane 20 of the compressor, and the exhaust amount is changed by changing the air inflow, so that the requirements of different process air consumption are met; the three-stage exhaust pipeline 34 of the three-stage cooler 3 is provided with a flow control valve 9 and a gas flowmeter 91, gas flow parameters are uploaded to a DCS control system, the DCS controls the adjusting angle of the first-stage inlet guide vane 20 of the compressor, and the exhaust quantity is changed by changing the air inflow, so that the requirements of different process air consumption are met. Wherein, the three-stage exhaust pipeline 34 of the three-stage cooler 3 and the final stage exhaust pipeline 54 of the final stage cooler 5 are provided with an air release valve 30 for debugging and emergency gas release.

The oil station 8 supplies the compressor 7 and the motor 6 with lubricating oil through an oil pipe, and the rotation of the motor 6 and the compressor 7 passes through a sliding bearing, which is required to be forcibly supplied with lubricating oil for lubrication of the rotation of the rotors of the motor 6 and the compressor 7 and bearing heat dissipation. The compressor 7 is driven by the motor 6, air or gas is sucked from the unit air inlet pipeline 10, and after the high-speed impeller of the compressor 7 is driven to compress by the operation of the motor 6, high-temperature and high-pressure air or gas is discharged from the unit air outlet 50. After each stage of gas is compressed, the temperature of the gas is increased, the gas enters a cooler for cooling, the cooled gas enters the next stage of compression until the final stage of compression and the cooler are cooled, and the gas is output to the process flow of a subsequent factory.

When the air conditioner is used, low-temperature and low-pressure air is sucked from the unit air inlet pipeline 10, the air is compressed by the compressor air inlet pipeline 11 at one stage 71 and then enters the first-stage cooler 1 for cooling through the first-stage cooling pipeline 12, the air cooled by the first-stage cooler 1 enters the compressor air inlet pipeline 21 and then enters the compressor air inlet pipeline 72 for compression, the air cooled by the second-stage cooler 2 enters the second-stage cooler 2 through the second-stage cooling pipeline 22, the air cooled by the second-stage cooler 2 enters the compressor air inlet pipeline 31 for compression, the air cooled by the high-temperature and high-pressure air enters the third-stage cooler 3 through the third-stage cooling pipeline 32, the air cooled by the third-stage cooler 3 enters the compressor air inlet pipeline 41 for compression, the air cooled by the fourth-stage cooler 4 enters the fourth-stage cooling pipeline 42, the air cooled by the fourth-stage cooler 4 enters the compressor air inlet pipeline 51 for compression and then exits the air cooled by the fourth-stage cooling pipeline 52, and enters the final-stage cooler 5 for cooling, and the air cooled by the final-stage cooler 5 enters the next air outlet pipeline 54 for output to the unit 50. The present application controls the required air intake of the compressor 7 by adjusting the inlet guide vanes 20 angle of the compressor stage 71 and the compressor stage four 74; the first return pipeline 33 and the second return pipeline 53 are arranged, and the first return pipeline 33 and the second return pipeline 53 are respectively provided with the anti-surge valve 40, so that the compressor 7 is effectively controlled to be prevented from entering a surge working condition, the high-value compressor can be protected, the whole system can not be stopped under the working condition that the gas consumption of the whole system is unstable, and economic loss is caused.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (7)

1. The utility model provides an satisfy air pressurization system of different pressures and different tolerance, includes compressor (7) and multistage cooler that the cooperation is connected, its characterized in that, multistage cooler includes one-level cooler (1), second grade cooler (2), tertiary cooler (3), fourth grade cooler (4) and final stage cooler (5), compressor (7) include compressor one-level (71), compressor second grade (72), compressor tertiary (73), compressor fourth grade (74) and compressor fifth grade (75), and compressor one-level (71) is connected with one-level cooler (1), compressor second grade (72) is connected with second grade cooler (2), compressor tertiary (73) is connected with tertiary cooler (3), compressor fourth grade (74) is connected with fourth grade cooler (4) and compressor fifth grade (75) is connected with final stage cooler (5), compressor one-level (71) and compressor fourth grade (74) air inlet all set up inlet guide vane (20) control and exhaust pressure.

2. An air boosting system according to claim 1 wherein a return line one (33) is provided between said three stage cooler (3) and said compressor stage (71), said return line one (33) communicating at one end with a three stage exhaust duct (34) of said three stage cooler (3) and at the other end with an air intake of said compressor stage (71).

3. An air charging system according to claim 2, characterized in that a second return line (53) is arranged between the final stage cooler (5) and the fourth compressor stage (74), one end of the second return line (53) being in communication with the final stage discharge line (54) of the final stage cooler (5) and the other end being in communication with the air inlet of the fourth compressor stage (74).

4. An air pressurizing system according to claim 3, wherein the first return line (33) and the second return line (53) are provided with anti-surge valves (40), and the line interface of the first return line (33) is provided with a silencing orifice plate (35).

5. An air charging system according to claim 3, characterized in that the tertiary exhaust duct (34) of the tertiary cooler (3) and the final exhaust duct (54) of the final cooler (5) are each provided with a blow-down valve (30).

6. An air charging system according to any of the claims 2-5, characterized in that a flow control valve (9) and a gas flow meter (91) are arranged on the tertiary exhaust duct (34) of the tertiary cooler (3).

7. An air charging system according to any of claims 1-5, characterized in that a flow control valve (9) and a gas flow meter (91) are arranged in the primary exhaust duct (13) of the primary cooler (1).