CN111255741A

CN111255741A - Inner duct axial flow type fluid compressor

Info

Publication number: CN111255741A
Application number: CN202010185671.5A
Authority: CN
Inventors: 黄庆
Original assignee: Shanghai Xiantong Ind Co ltd
Current assignee: Shanghai Xiantong Ind Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-06-09

Abstract

The invention discloses an inner duct axial flow type fluid compressor, which comprises a base, a first shell and a second shell, wherein the first shell and the second shell are installed on the base through bolts, the left side of the first shell is provided with an air inlet, an inner duct rotor is installed inside the first shell, a compression cavity in the inner duct rotor is internally provided with a multi-stage blade group integrated with the inner wall of a duct of the inner duct rotor, a gear is arranged on the inner duct rotor between the first shell and the second shell, a diffuser is installed inside the second shell, and the upper end of the second shell is provided with an exhaust port. The invention has simple integral structure, reliable operation, low operation cost, high efficiency, simple manufacturing process requirement, low manufacturing cost, convenient maintenance, few easily-damaged parts, low energy consumption, long service life and wide application range, and can cover the mainstream small and medium models in the market.

Description

Inner duct axial flow type fluid compressor

Technical Field

The invention relates to a compressor, in particular to an inner duct axial flow fluid compressor.

Background

Fluid compressors have been widely used in many fields such as petrochemical industry, energy, steel, electric power, metallurgy, shipbuilding, electronics, textile, mining, light industry, mechanical manufacturing, military science and technology, aerospace, infrastructure, etc. at present, the compressors raise fluid pressure by mechanical work, raise the suction pressure state to the discharge pressure state, and there are 5 types of compressors at present: reciprocating, screw, rotary, scroll, and axial flow.

The existing axial compressor belongs to a speed type compressor, and the working principle of the existing axial compressor is that the blades rotating at a high speed do work on gas, the flowing speed of the gas is greatly improved, and then the kinetic energy is converted into pressure energy. The axial flow compressor is mainly applied to the field of large flow demand, and has the advantages of simple structure, stable performance, low energy consumption, simple maintenance, long service life and the like.

However, the axial flow compressor has complicated blade profile, the largest volume is the rotor and the casing, the requirement on manufacturing process is high, the manufacturing cost is high, and the axial flow compressor cannot be applied in small flow and miniaturization, so the flow is 30m at present³The medium-large compressor with the pressure of more than/min/8.0 bar is mainly a centrifugal compressor, and has the defects of high manufacturing cost and high maintenance cost. The flow rate is 1m³The small compressor above/min/8.0 bar mainly comprises a screw machine type compressor, a vortex type compressor, a piston type compressor and a sliding sheet type compressor, and has the advantages of mature technology, low manufacturing cost, simpler maintenance and high energy consumption, more easily damaged parts, more used consumables and high use cost.

Disclosure of Invention

The present invention is directed to a bypass axial flow fluid compressor to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an inner duct axial-flow type fluid compressor, includes the base and installs first casing, second casing on the base through the bolt, the left side of first casing is provided with the air inlet, the internally mounted of first casing has inner duct rotor, and the compression intracavity in the inner duct rotor is provided with the multistage blading integrative with inner duct rotor's letter inner wall, be provided with the gear on the inner duct rotor between first casing and the second casing, the internally mounted of second casing has the diffuser, and the upper end of second casing is provided with the gas vent.

Preferably, the blade group is provided with 16 stages.

Preferably, a first sealing element, a thrust bearing and a first radial bearing are sequentially arranged between the left side of the inner duct rotor and the first shell from left to right.

Preferably, a second radial bearing and a second seal are sequentially installed between the right side of the endoprosthesis rotor and the first casing from left to right.

Preferably, a third sealing element and a third radial bearing are sequentially installed between the right end of the inner duct rotor and the second housing from left to right.

Preferably, a motor is further connected to the gear.

Preferably, the inner duct axial flow fluid compressor is further provided with a PLC intelligent control device or a variable frequency control device.

Compared with the prior art, the invention has the beneficial effects that:

the invention adopts the design of the inner duct compression cavity, and the blade group and the compression cavity are integrally manufactured in the same duct to be used as the rotor, thereby greatly reducing the volume of the rotor, obtaining the excellent performance of the axial flow compressor, being applicable to the positive pressure field to the negative pressure vacuum field and being also widely applicable to the middle and small flow markets.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1-a first housing; 2-a second housing; 3-a base; 4-a bolt; 5-an air inlet; 6-a endoprosthesis rotor; 7-a compression chamber; 8-blade set; 9-gear; 10-a diffuser; 11-an exhaust port; 12-a first seal; 13-a thrust bearing; 14-a first radial bearing; 15-a second radial bearing; 16-a second seal; 17-a third seal; 18-third radial bearing.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1, an inner duct axial flow fluid compressor includes a base 3, and a first casing 1 and a second casing 2 mounted on the base 3 through bolts 4, wherein an air inlet 5 is provided on the left side of the first casing 1, an inner duct rotor 6 is mounted inside the first casing 1, a 16-stage blade group 8 integrated with the duct inner wall of the inner duct rotor 6 is provided in a compression cavity 7 in the inner duct rotor 6, a gear 9 is provided on the inner duct rotor 6 between the first casing 1 and the second casing 2, the gear 9 is further connected with a motor, a diffuser 10 is mounted inside the second casing 2, and an exhaust port 11 is provided at the upper end of the second casing 2; a first sealing element 12, a thrust bearing 13 and a first radial bearing 14 are sequentially installed between the left side of the inner duct rotor 6 and the first shell 1 from left to right, a second radial bearing 15 and a second sealing element 16 are sequentially installed between the right side of the inner duct rotor 6 and the first shell 1 from left to right, and a third sealing element 17 and a third radial bearing 18 are sequentially installed between the right end of the inner duct rotor 6 and the second shell 2 from left to right. The inner duct axial flow type fluid compressor is also provided with a PLC intelligent control device or a variable frequency control device.

The inner duct rotor 6 is made of hollow metal, the first shell 1 is made of metal, the second shell 2 is of a metal shell structure, after the assembly is completed, the compressor can be directly started to operate according to preset technical parameters such as flow, pressure and temperature, and the required flow and pressure can be realized by adjusting the rotating speed of the rotor driven by the motor; when the internal bypass rotor is in operation, a medium is sucked from the air inlet 5, enters the compression cavity 7 of the internal bypass rotor 6, enters the diffuser 10 for diffusion and deceleration after being compressed, and is discharged from the air outlet 11 to enter an application process.

The invention has simple integral structure, reliable operation, low operation cost, high efficiency, simple manufacturing process requirement, low manufacturing cost, convenient maintenance, few easily-damaged parts, low energy consumption, long service life and wide application range, and can cover the mainstream small and medium models in the market.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The utility model provides an inner duct axial-flow type fluid compressor, includes base (3) and installs first casing (1), second casing (2) on base (3) through bolt (4), its characterized in that, the left side of first casing (1) is provided with air inlet (5), the internally mounted of first casing (1) has inner duct rotor (6), is provided with in compression chamber (7) in inner duct rotor (6) with the integrative multistage blading (8) of the letter inner wall of inner duct rotor (6), be provided with gear (9) on inner duct rotor (6) between first casing (1) and second casing (2), the internally mounted of second casing (2) has diffuser (10), and the upper end of second casing (2) is provided with gas vent (11).

2. The endoprosthesis axial fluid compressor according to claim 1, characterized in that the blade group (8) is provided with 16 stages.

3. The endoprosthesis axial fluid compressor according to claim 1, characterized in that between the left side of the endoprosthesis rotor (6) and the first casing (1) there are mounted in sequence from left to right a first seal (12), a thrust bearing (13) and a first radial bearing (14).

4. The endoprosthesis axial fluid compressor according to claim 1, characterized in that between the right side of the endoprosthesis rotor (6) and the first casing (1) are mounted, from left to right, a second radial bearing (15) and a second seal (16) in this order.

5. The endoprosthesis axial fluid compressor according to claim 1, characterized in that a third seal (17) and a third radial bearing (18) are mounted between the right end of the endoprosthesis rotor (6) and the second casing (2) in succession from left to right.

6. Endoprosthesis axial fluid compressor according to claim 1, characterised in that an electric motor is also connected to the gear (9).

7. The endoprosthesis axial flow fluid compressor of claim 1, further comprising a PLC intelligent control device or a variable frequency control device.