CN108194391A - A kind of fluid mechanism of the attached wall unitary rotation of hollow impeller - Google Patents

Abstract

A fluid compression machine with a hollow impeller attached to the wall to rotate as a whole. One end of the hollow impeller blade is connected to the hollow ring, and the other end is fixedly installed on the inner side of the compressor body wall. The hollow passage of the blade is connected to the outer side of the compressor body wall; the outer side of the compressor body wall The cooling liquid drives the blades, and the two ends of the body wall are connected to the inner ring of the bearing; the outer ring of the bearing is connected by a fixed support connector, which is filled with the cooling liquid in the space outside the compressor body wall and the hollow impeller, and connected to the external cooler connected. When the compressor is working, the cooling liquid drives the blades to drive the cooling liquid to circulate between the hollow impeller and the external cooler, which has a good cooling effect on the core parts of the impeller. The hollow impeller can be used in series in multiple stages, and the cooling system of each stage works independently. The invention has an ingenious structure, good cooling effect on the core impeller parts of the compressor, keeps the impeller blades in good working performance under severe working conditions such as high temperature and high pressure, and has good application prospects.

Description

A fluid compression machine with a hollow impeller attached to the wall and integrally rotating

technical field

The invention belongs to the field of fluid machinery, and relates to a fluid compression machine with a hollow impeller attached to a wall and integrally rotating, which is convenient for efficient cooling treatment of the impeller and is suitable for compression and transportation of high-temperature fluid.

Background technique

Compression treatment and transportation of high-temperature fluids have always been important problems in industry and manufacturing. Because the impeller blades in the high temperature and high pressure working environment usually bear extremely high pressure and load, they must maintain good structural strength under high temperature and high speed conditions, and the impeller components are in high speed operation, and it is extremely difficult to cool them. These harsh requirements are very difficult for the material industry and manufacturing industry. For example, the manufacture of common gas turbine impeller core components is usually a state-level highly secret technology. Only a very small number of countries can master all the manufacturing technologies of gas turbines and aero-engines. Aero-engines are also known as the jewel in the crown of industry, which shows that Difficulty of manufacture.

The present invention proposes an innovative mechanical design and technology for high-temperature fluid compression treatment, in which the key hollow impeller part is attached to the body wall of the main body of the compression machine and rotates together with the main body of the compression machine. This design and creation has special characteristics Advantages and features. First of all, the hollow impeller of the present invention is mounted on the wall and rotates as a whole, without a central shaft. Therefore, the manufacture of the impeller of the present invention does not need to be limited by the size, structure and space of the central shaft, which facilitates the manufacture of the impeller, so that the impeller can have a relatively better performance. structural strength. Secondly, the hollow impeller of the present invention is mounted on the wall and rotates as a whole. There are no relative moving parts in the rotating part, so there is no friction and energy loss caused by relative moving parts, and it has higher working efficiency. The most important thing is that the hollow impeller of the present invention is mounted on the wall and rotated as a whole, so that the impeller can be efficiently cooled in the outer space of the body wall of the main body of the rotating part, so that the hollow impeller can still maintain high temperature and high pressure in the working environment. Good structural strength improves its working life. Based on the aforementioned features and advantages, using the patented technology of the present invention, a fluid compression machine with more complete performance can be manufactured under the condition of insufficient material strength. Or, on the basis of existing material technology and performance, a fluid compression machine with more superior performance can be manufactured.

Contents of the invention

Aiming at the difficulty of cooling the impeller blades of high-temperature fluid compression machinery and demanding material properties, the present invention proposes a unique technical solution for the hollow impeller to be installed with a wall and rotate as a whole, so that it can be more conveniently used for the wall-attached impeller in the high-temperature and high-pressure working environment. The integrally rotating impeller blades are installed for cooling treatment, so the material performance requirements and manufacturing difficulty can be reduced, and low-cost materials can be used to manufacture high-temperature fluid compression machinery with excellent performance.

Technical scheme of the present invention is:

A fluid compression machine with a hollow impeller attached to the wall and integrally rotating. The body wall of the compressor body is a rotary structure. The compressor includes a target number of impellers. Each impeller blade of the compressor is a hollow impeller blade, and each blade One end of the blade communicates with the hollow ring, and the other end is fixed on the body wall of the compressor body, and the hollow part of the blade communicates with the coolant-filled space between the outer side of the compressor body wall and the compressor shell; the two ends of the compressor body They are respectively connected to the compressor casing through fixed support bearings, wherein the outer rings of the fixed support bearings at both ends of the compressor body are connected to the compressor casing through fixed connectors to form the installation support part of the compressor, which is also the non-moving part of the compressor; Both ends of the main body of the compressor are connected to the inner ring of the fixed support bearing, driven by the drive mechanism outside the body wall of the main body of the compressor, and together with the hollow impeller blades constitute the rotating flow part of the compressor; in the space filled with cooling liquid, every two The relative position between the two impellers is provided with a partition plate for cooling liquid isolation. One end of the partition plate is fixed on the inner wall of the compressor casing, and the other end is connected to the outer wall of the compressor main body through a bearing to ensure the cooling water flowing through each impeller. The liquids are independent of each other. When the coolant system of one of the impellers has a problem or needs to be replaced, it will not affect the rotation of other impellers; the coolant is connected to the external cooler. The space between the rotating over-flow part and the non-moving part of the compressor, as well as the space in the hollow passage of the hollow impeller blade connected with it, is filled with cooling liquid; when the rotating over-current part rotates, the cooling liquid passes through the hollow passage of the hollow impeller and external cooler for circulation. Form a good cooling effect and maintain the stable structural performance of the working impeller blades in the high temperature and high pressure environment inside the compressor body.

Further, the cooling liquid drive blades are fixedly installed on the outside of the compressor main body wall between each two partition plates. When the rotating overflow part rotates, the cooling liquid drives the blades to rotate at the same time, which also further promotes the passage of the cooling liquid in the hollow impeller. and external cooler for circulation.

Further, the inlet end and the outlet end of the above-mentioned compressor main body are located on the same axis, and the diameter of the outlet end is smaller than the diameter of the inlet end, and the outlet end of the compressor is connected to the inner ring of the support bearing through the outlet support connector, so that the inside of the compressor overflow part The flow field situation is: the first half of the main body of the compressor is a low-pressure area of its internal flow field, and the second half of the main body of the compressor is a high-pressure area of its internal flow field.

Further, the above-mentioned multiple hollow impellers are arranged in multiple stages and arranged in sequence inside the main body of the compressor, and the diameter of the impellers decreases step by step along the order from the inlet to the outlet, so as to improve the fluid compression effect of the compressor.

The beneficial effect of the present invention is that the integral rotating fluid compression machine with the hollow impeller attached to the wall made by the above technical scheme has no relative moving parts inside the rotating flow part, and has higher working efficiency; especially, all the components of the hollow impeller The hollow parts of the blades communicate with each other and the external cooling system. While the normal compressed fluid rotates, it also drives the circulation of the cooling fluid, which has a better cooling effect of the impeller; therefore, based on the patented impeller high-efficiency cooling technology of the present invention According to the scheme, relatively low-performance materials can be used to manufacture higher-performance high-temperature fluid compression machinery.

Description of drawings

Fig. 1 is the schematic view of the integral rotating fluid compression machine with the hollow impeller and the wall attached to the design of the present patent.

In the figure: 1 hollow impeller blade; 2 hollow passage of hollow impeller; 3 coolant driving blade; 4 body wall of compressor main body; 5 coolant filling space; 6 rotation of compressor main part; Outer ring of support bearing; 9 balls of fixed support bearing; 10 fixed support bearing; 11 inner ring of fixed support bearing; 12 outlet of compressor; 13 outlet support connector; 14 support connector of compressor driving mechanism; Mechanism; 16 partition plate; 17 coolant interval sealed bearing.

Detailed ways

The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

A hollow impeller wall-attached integral rotary fluid compression machine designed in this patent, one end of the hollow blade communicates with the hollow ring to form a hollow impeller; the other end of the hollow impeller blade 1 is fixedly connected to the body wall 4 of the main body of the compressor , and the hollow part thereof communicates with the outside of the compressor body wall; the outside of the compressor body wall 4 is provided with cooling liquid driving blades 3; the two ends of the compressor body wall 4 are connected with the inner ring 11 of the fixed support bearing , so that together with the above-mentioned components, it constitutes the part of the compressor rotating over-current. A drive mechanism 15 is provided outside the body wall 4 of the compressor, which can be driven by gears, etc., to drive the rotating part of the compressor to rotate together as a whole. The effect of the operation of the compressor is that the first half near the inlet is the low-pressure area of its internal flow field, and the second half near the outlet is the high-pressure area of its internal flow field. In order to achieve better fluid compression effect, the diameter of the inlet should be Larger than the outlet diameter, the hollow impellers can be arranged in multiple stages, arranged in sequence inside the main body of the compressor, and the diameter of the impellers decreases step by step along the order from the inlet to the outlet.

The outer ring 8 of the fixed support bearing is connected with the compressor casing through a fixed support link to form a non-rotating part of the compressor for installation and fixation of the compressor. The coolant-filled space 5 between the non-rotating part of the compressor and the rotating flow-through part is filled with coolant and communicated with an external cooler to form a compressor cooling system. When the rotating flow-passing part rotates as a whole, the cooling liquid on the outside of the body wall drives the blades 3 to rotate at the same time, driving the cooling liquid to circulate between the hollow part of the hollow blade and the external cooling system. The hollow impeller blade 1 of the core component has Excellent cooling effect, keeping its structure and performance stable under high temperature and high pressure.

When multi-stage hollow impellers are used, the coolant-driven blades of each stage and the corresponding cooling system can be isolated without additional drive mechanisms, and they circulate and work independently. In this way, once the blades of a certain stage are damaged due to an accident, the normal operation of the impellers of other stages of the compressor will not be hindered, and the working stability of the compressor can be better improved.

This patent is not meant to be limited by the schematic diagram and description, and can be changed without departing from the technical principle and purpose of the present invention. The hollow impeller attached to the wall integrally rotates the fluid compression machine designed by the present invention. The concept is exquisite. The impeller attached to the wall of the pump body is hollow and filled with cooling liquid. When the flow-through part rotates, the cooling liquid is forced between the inside of the hollow impeller and the external cooler. Circulating flow has a good effect of synchronous cooling, so it has better structural stability and work performance, and has broad market application and promotion prospects.

Claims (4)

1. A fluid compression machine with a hollow impeller attached to the wall and integrally rotating, characterized in that, the body wall (4) of the compressor main body is a revolving body structure, and the compressor includes the impellers of the target number, and each impeller of the compressor The blades are hollow impeller blades (1), one end of each blade communicates with the hollow ring, and the other end is fixed on the body wall of the compressor main body, and the hollow part of the blade is connected with the outer side of the compressor body wall and the compressor casing (7) The space (5) filled with coolant between them communicates; the two ends of the main body of the compressor are respectively connected to the compressor housing (7) through fixed support bearings (10), wherein the outer rings (8) of the two ends of the main body of the compressor are fixed support bearings ) is connected with the compressor shell (7) through a fixed connector to form the installation support part of the compressor; both ends of the compressor body are connected to the inner ring (11) of the fixed support bearing, and the drive mechanism on the outside of the body wall of the compressor body (15) drive, together with the hollow impeller blades constitute the rotating flow-through part of the compressor; in the space filled with coolant (5), a partition plate (16) for coolant isolation is provided at the relative position between every two impellers , one end of the partition plate (16) is fixed on the inner wall of the compressor casing (7), and the other end is connected with the outer wall of the compressor main body through a bearing to ensure that the cooling liquid flowing through each impeller is independent of each other; the cooling liquid and the external cooler connected. 2. A fluid compression machine with a hollow impeller attached to a wall that rotates as a whole according to claim 1, further characterized in that the cooling liquid drive vane (3) is fixedly installed on the outer side of the main body wall of the compressor between every two partition plates , when the rotating over-flow part rotates, the cooling liquid drives the blades to rotate at the same time. 3. According to claim 1 or 2, a hollow impeller wall-attached integrally rotating fluid compression machine is characterized in that the inlet end and the outlet end of the compressor body are located on the same axis, and the diameter of the outlet end is smaller than that of the inlet The outlet end of the compressor is connected to the inner ring of the support bearing through the outlet support connector (13), so that the internal flow field of the compressor overflow part is: the first half of the main body of the compressor is the low-pressure area of the internal flow field of the pump, and the compressor The second half of the main body is the high pressure area of the pump internal flow field. 4. A fluid compression machine with a hollow impeller attached to the wall as claimed in claim 3, further characterized in that a plurality of hollow impellers are arranged in multiple stages and arranged in sequence inside the main body of the compressor, and the diameter of the impellers extends along the inlet to the The order of exits decreases step by step.