CN116104583A

CN116104583A - High-efficiency double-impeller fluid expander

Info

Publication number: CN116104583A
Application number: CN202310268607.7A
Authority: CN
Inventors: 宋惠军; 宋彦希; 宋允歆
Original assignee: Wuhan Wuqiongda Energy Technology Co ltd
Current assignee: Wuhan Wuqiongda Energy Technology Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-05-12

Abstract

The invention discloses a high-efficiency double-impeller fluid expansion machine, and aims to provide a high-efficiency double-impeller fluid expansion device. The novel impeller comprises a pair of impeller rotors and a shell which are meshed with each other, wherein the shell consists of a shell main body and two end covers, an 8-shaped barrel-shaped cavity is formed in the shell main body, an inlet and an outlet are formed in the cavity, the two impeller rotors are respectively arranged in the cavity through the two end covers, a gap is sealed between the two impeller rotors and between the impeller rotors and the shell, and a diversion guide device is arranged at the inlet of the shell. The invention can be used for recycling secondary energy sources such as waste heat, steam, fluid pressure difference and the like.

Description

High-efficiency double-impeller fluid expander

Technical Field

The invention relates to a power machine, in particular to a high-efficiency double-impeller fluid expander.

Background

The invention discloses a three-blade Roots-type power generator which can realize low-quality waste heat steam recycling by using a small-sized Roots-type power generator, and the three-blade Roots-type power generator is a positive displacement rotary machine and comprises a rotor and a casing, wherein the rotor adopts a pair of meshed three-blade rotors. The three-blade torsion Roots type power machine power generation device is easy to process, high in area utilization coefficient and engagement coincidence, stable in operation and has the following defects: when the steam impacts the rotor, the direction of the directional movement of the steam is opposite to the direction of the movement of the rotor edge, a large amount of energy is consumed, and the efficiency is reduced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a high-efficiency double-impeller fluid expander, which can change the direction of directional movement of a gaseous working medium, so that when the gaseous working medium impacts a rotor, the movement direction of the gaseous working medium is ensured to be consistent with the movement direction of the edge of the rotor, thereby reducing energy loss and improving the efficiency of the fluid expander.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a high-efficient bilobed wheel fluid expander, includes a pair of intermeshing's impeller rotor and shell, the shell comprises a shell main part and two end covers, the inside 8 font tubbiness cavity that is equipped with of shell main part, the cavity is equipped with import and export, two impeller rotors pass through two end covers set up respectively in the cavity, between two impeller rotors to and be the clearance seal between impeller rotor and the shell import department be provided with reposition of redundant personnel guider.

The invention can also: the diversion guiding device is provided with two diversion concave surfaces which can guide fluid to move in the rotation direction of the corresponding impeller rotor, a diversion blade formed by intersecting the two diversion concave surfaces points to the inlet, and two guiding concave surfaces which can guide the rebounded fluid to move in the rotation direction of the corresponding impeller rotor. When the fluid is guided by the diversion concave surface or the guiding concave surface, the included angle between the directional movement direction and the movement direction of the impact point of the impeller rotor is between plus or minus ninety degrees. Two mutually meshed synchronous gears are arranged between the two impeller rotors, and the two synchronous gears are respectively and coaxially fixed with the corresponding impeller rotors. And a converging guide device is arranged at the outlet of the shell. The converging guiding device is provided with two converging concave surfaces and two guiding-out concave surfaces, two converging edges formed by intersecting the converging concave surfaces point to the outlet, guiding-out edges formed by intersecting the converging concave surfaces and the guiding-out concave surfaces point to opposite directions of rotation of the corresponding impeller rotors, and the two guiding-out concave surfaces are coaxial with the corresponding impeller rotors respectively. The impeller rotor can be a two-blade impeller rotor, a three-blade impeller rotor or a multi-blade impeller rotor.

Compared with the prior art, the invention has the beneficial effects that: the method has the advantages that the dynamic moment of the rotor is increased, the resistance moment of the rotor is reduced, and therefore efficiency is improved; the axle pressure is reduced, reduces the oil leak, increase of service life.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is an isometric view of a high efficiency dual impeller fluid expander;

FIG. 2 is a top view of a high efficiency dual impeller fluid expander;

FIG. 3 is a cross-sectional view of A-A of a high efficiency dual impeller fluid expander;

FIG. 4 is an enlarged partial view of a cross-sectional view of A-A of a high efficiency dual impeller fluid expander;

FIG. 5 is an isometric view of a pair of intermeshing impeller rotors;

fig. 6 is a top view of a high efficiency dual impeller fluid expander provided with a synchronizing gear.

In the figure: the driving impeller rotor 3 of the shell main body 2 drives the rotating shaft 4 of the impeller rotor 5 of the driven rotating shaft 6 of the driven rotating shaft 7 of the leading-in concave surface 8 of the diversion guiding device 9 of the diversion blade 10, the leading-in blade 11 of the secondary leading-in concave surface 12 of the secondary leading-in concave surface 13, the leading-out concave surface 14 and the converging concave surface 15 of the converging guiding device 16 are synchronous gears 17.

Description of the embodiments

Case one:

in fig. 1-5, a high-efficiency double-impeller fluid expander comprises a driving impeller rotor 3, a driving rotating shaft 4, a driven impeller rotor 5, a driven rotating shaft 6 and a shell, wherein the shell is composed of a shell main body 2 and two end covers 1, an 8-shaped barrel-shaped cavity is formed in the shell main body 2, an inlet and an outlet are formed in the cavity, the driving impeller rotor 3 and the driven impeller rotor 5 are ten-leaf impeller rotors, the driving impeller rotor 3, the driving rotating shaft 4, the driven impeller rotor 5 and the driven rotating shaft 6 are respectively arranged in the cavity through the two end covers 1, a gap is sealed between the driving impeller rotor 3 and the driven impeller rotor 5, and a gap is sealed between the driving impeller rotor 3 and the driven impeller rotor 5 and the shell, and a diversion guiding device 9 is arranged at an inlet of the shell. The diversion guiding device 9 is provided with two diversion concave surfaces 7 and two guiding concave surfaces 8, a diversion blade 10 formed by intersecting the two diversion concave surfaces 7 points to an inlet, the two diversion concave surfaces 7 guide separated fluid to the corresponding impeller rotor rotation directions respectively, and the two guiding concave surfaces 8 guide the rebounded fluid to the corresponding impeller rotor rotation directions respectively again. A converging guide 16 is provided at the outlet of the housing. The converging guiding device 16 is provided with two converging concave surfaces 15 and two guiding-out concave surfaces 14, converging edges formed by intersecting the converging concave surfaces 15 point to outlets, guiding-out edges formed by intersecting the converging concave surfaces and the guiding-out concave surfaces point to opposite directions of rotation of the corresponding impeller rotors, and the two guiding-out concave surfaces 14 are coaxial with the corresponding driving impeller rotor 3 and driven impeller rotor 5 respectively.

Case two:

as shown in fig. 6, compared with the first case, two synchromesh gears 17 are disposed between the driving impeller rotor 3 and the driven impeller rotor 5, and the two synchromesh gears 17 are coaxially fixed with the driving impeller rotor 3 and the driven impeller rotor 5, respectively.

The invention and its embodiments have been described above without limitation, and the actual construction is not limited thereto. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution can be designed without departing from the inventive concept and without the inventive concept, and the invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a high-efficient bilobed wheel fluid expander, includes a pair of intermeshing's impeller rotor and shell, the shell comprises a shell main part and two end covers, the inside 8 font tubbiness cavity that is equipped with of shell main part, the cavity is equipped with import and export, two impeller rotors pass through two end covers set up respectively in the cavity, between two impeller rotors to and be clearance seal between impeller rotor and the shell, characterized by: and a diversion guide device is arranged at the inlet of the shell.

2. The efficient bilobed wheel fluid expander of claim 1, wherein: the flow dividing guide device is provided with two flow dividing concave surfaces which can guide fluid to move in the rotating direction of the impeller rotor, and a flow dividing blade formed by intersecting the two flow dividing concave surfaces points to the inlet.

3. The efficient bilobed wheel fluid expander of claim 2, wherein: the diversion guiding device is also provided with two guiding concave surfaces which can redirect the rebounded fluid to move corresponding to the rotation direction of the impeller rotor.

4. A high efficiency dual impeller fluid expander as claimed in claim 3 wherein: two mutually meshed synchronous gears are arranged between the two impeller rotors, and the two synchronous gears are respectively and coaxially fixed with the corresponding impeller rotors.

5. A high efficiency dual impeller fluid expander as claimed in claim 3 or 4 and wherein: and a converging guide device is arranged at the outlet of the shell.

6. The efficient bilobed wheel fluid expander of claim 5, wherein: the converging guiding device is provided with two converging concave surfaces and two guiding-out concave surfaces, two converging edges formed by intersecting the converging concave surfaces point to the outlet, guiding-out edges formed by intersecting the converging concave surfaces and the guiding-out concave surfaces point to opposite directions of rotation of the corresponding impeller rotors, and the two guiding-out concave surfaces are coaxial with the corresponding impeller rotors respectively.