CN210715333U - Air wave supercharging device - Google Patents

Abstract

The utility model relates to a gas wave supercharging device, which comprises a supercharging part and at least two stages of pressure cavities which are arranged in sequence, wherein each stage of pressure cavity comprises a high pressure cavity, a middle pressure cavity and a low pressure cavity respectively, the high pressure cavity of the first stage of pressure cavity is connected with a high pressure air inlet valve, and the low pressure cavity of the last stage of pressure cavity is connected with a low pressure air inlet valve; the pressure boosting part is used for converting high-pressure gas in the high-pressure cavity at the same level and low-pressure gas in the low-pressure cavity into medium-pressure gas in the medium-pressure cavity; in the two adjacent pressure cavities, a middle pressure cavity at the front stage is communicated with a high pressure cavity at the rear stage, and a low pressure cavity at the front stage is communicated with the middle pressure cavity at the rear stage; wherein, a part of the medium pressure gas in the medium pressure cavity of the first stage pressure cavity is taken as a product, and the other part of the medium pressure gas is introduced into the high pressure cavity of the rear stage pressure cavity adjacent to the product. The gas wave supercharging device can be suitable for large expansion ratio and compression ratio and ensures the refractive index, and when the injected gas pressure is the same, the medium-pressure gas production with higher pressure can be obtained, so that the device has wider application range and higher isentropic efficiency.

Description

Air wave supercharging device

Technical Field

The utility model relates to a gaseous pressure boost technical field, concretely relates to gas ripples supercharging device.

Background

The gas wave supercharging technology is a novel pressure energy comprehensive utilization technology and is mainly applied to the fields of natural gas exploitation, high-pressure coal bed gas depressurization, low-pressure gas supercharging, gathering and transportation and the like. The common injection supercharging equipment comprises a compressor set, a turbine supercharging part, a static injector and the like. The compressor, the turbocharger and the like mainly run by virtue of blades, and the gas is pressurized through a mechanical energy conversion process; the equipment has the problems of complex structure, high installation and maintenance cost, difficulty in running with the sand belt liquid and the like. The static ejector is pure static equipment, pressure energy exchange is realized in a mode of directly mixing high-pressure gas and low-pressure gas, and the equipment has high energy loss and low efficiency.

The gas wave supercharging technology realizes energy exchange through pressure waves running in a double-opening oscillation tube, has high efficiency and good liquid carrying performance, such as a patent axial-flow type jet flow gas wave supercharger CN201220115597.0, a radial-flow type jet flow gas wave supercharger CN201210081102.1 and the like, but is generally suitable for small expansion ratio, the injection rate is sharply reduced when the expansion ratio is more than 2, the expansion ratio and the compression ratio of equipment are limited, and the medium-pressure gas production pressure is lower.

Therefore, how to provide a gas wave supercharging device which can be applied to a larger expansion ratio and compression ratio and can ensure a refractive index is a technical problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gas wave supercharging device can be applicable to great expansion ratio, compression ratio and guarantee the index of refraction.

In order to solve the technical problem, the utility model provides a gas wave supercharging device, which comprises a supercharging part and at least two stages of pressure cavities which are arranged in sequence, wherein each stage of pressure cavity comprises a high-pressure cavity, a middle-pressure cavity and a low-pressure cavity respectively, the high-pressure cavity of the first stage of pressure cavity is connected with a high-pressure air inlet valve, and the low-pressure cavity of the last stage of pressure cavity is connected with a low-pressure air inlet valve; the pressure boosting part is used for transmitting energy through pressure waves to convert high-pressure gas in the high-pressure cavity of the same stage and low-pressure gas in the low-pressure cavity into medium-pressure gas in the medium-pressure cavity; in the two adjacent stages of the pressure cavities, a middle pressure cavity at the front stage is communicated with a high pressure cavity at the rear stage, and a low pressure cavity at the front stage is communicated with the middle pressure cavity at the rear stage; wherein, a part of the medium pressure gas in the medium pressure cavity of the first stage pressure cavity is taken as a product, and the other part of the medium pressure gas is introduced into the high pressure cavity of the rear stage pressure cavity adjacent to the product.

That is to say, only two air inlet valves, one is a high-pressure air inlet valve and is connected with the high-pressure cavity of the first-stage pressure cavity, the other is a low-pressure air inlet valve and is connected with the low-pressure cavity of the last-stage pressure cavity, in the two-stage pressure cavities adjacent to each other in front and back, the middle-pressure cavity at the front stage is communicated with the high-pressure cavity at the rear stage, the low-pressure cavity at the front stage is communicated with the middle-pressure cavity at the rear stage, gas flows from the first-stage pressure cavity to the last-stage pressure cavity step by step, part of the middle-pressure gas in the middle-pressure cavity of the first-stage pressure cavity is used as a product, and the.

The gas pressure in each stage of high-pressure cavity is gradually decreased, the gas pressure in each stage of medium-pressure cavity is gradually decreased, and the gas pressure in each stage of low-pressure cavity is gradually decreased by the multi-stage feedback mode. When the pressure of the first-stage compressed air introduced by the high-pressure air inlet valve is far greater than that of the last-stage compressed air introduced by the low-pressure air inlet valve, the low-pressure air introduced by the low-pressure air inlet valve can be gradually pressurized by the multi-stage feedback mode, and finally the low-pressure air is converted into the first-stage compressed air which is communicated with the first-stage pressure cavity through the high-pressure air inlet valve to obtain the first-stage compressed air.

The multi-stage feedback can realize the gradual pressurization of low-pressure gas, the overall larger expansion ratio can be decomposed into multi-stage smaller expansion ratios, and the waste of energy of the high-pressure gas can be avoided while the higher refractive index is ensured; the defects of limited expansion ratio and compression ratio of the traditional gas wave ejector can be overcome, and when the ejected gas pressure is the same, medium-pressure gas production with higher pressure can be obtained, so that the device has wider application range and higher isentropic efficiency.

Optionally, the pressurizing part includes a transmission shaft and a rotor coaxially rotating with the transmission shaft, a plurality of oscillating pipes are arranged at intervals along a circumferential direction of the rotor, an axial direction of each oscillating pipe is parallel to an axial direction of the rotor, a middle pressure chamber of each stage of the pressure chamber is located at one end of the oscillating pipe, and a high pressure chamber and a low pressure chamber of each stage of the pressure chamber are both located at the other end of the oscillating pipe; the transmission shaft drives the rotor to rotate, so that the oscillating tube is sequentially communicated with the high-pressure cavity, the medium-pressure cavity and the low-pressure cavity of each stage of pressure cavity from the first-stage pressure cavity to the final-stage pressure cavity step by step.

Optionally, each of the oscillating tubes has the same cross section along its length.

Optionally, the high-pressure chamber, the medium-pressure chamber, and the low-pressure chamber of each stage of the pressure chamber are respectively provided with a nozzle communicated therewith, the nozzle includes a conical cylinder section, a large diameter end of the conical cylinder section is arranged toward the pressure chamber, and a small diameter end of the conical cylinder section is arranged toward the oscillation tube and can be communicated with the oscillation tube.

Optionally, the side wall of the rotor is provided with a plurality of axial through holes, which form the oscillation tubes.

Optionally, the rotor includes an inner sleeve and a wave rotor sleeved outside the inner sleeve, a cavity is provided between the wave rotor and the inner sleeve, the inner sleeve is fixedly connected to the wave rotor and the transmission shaft, and the oscillation tube is provided on a side wall of the wave rotor.

Optionally, the number of stages of the pressure chamber is two.

Optionally, the rotor further comprises a housing and a fixing seat fixedly connected to the bottom end of the housing, and the rotor is located in the housing; the fixing seat is provided with a high-pressure cavity and a low-pressure cavity of each pressure cavity.

Optionally, the adjusting mechanism further comprises a fixed shaft and an adjusting cover, the rotor is rotatably sleeved outside the fixed shaft, and an axial limiting member is arranged between the rotor and the fixed shaft; the bottom end of the fixed shaft penetrates through the fixed seat and is fixed with the adjusting cover, and the adjusting cover and the fixed seat are fixed through bolts; the upper end face of the adjusting cover is provided with a step structure matched with the lower shaft shoulder at the bottom of the fixing shaft.

Optionally, the axial stop comprises a first bearing set and a bearing gland; the first bearing group is arranged between the rotor and the fixed shaft, and two ends of the first bearing group are respectively abutted to the bearing gland and the step of the inner wall of the rotor.

Optionally, still including locating backup pad in the casing with locate the top cap on casing top, the backup pad include the sleeve pipe and with first baffle and at least one second baffle of sleeve pipe rigid coupling, the sleeve pipe rotationally the cover is located the outside of transmission shaft, first baffle, the top cap with the casing encloses and closes the formation cavity, the second baffle will the cavity is separated into at different levels the middling pressure chamber in pressure chamber.

Optionally, still include the second regulating part, the second regulating part includes apron and second gland, the lower surface of apron is equipped with the flange along its circumference, just the apron with the top cap passes through the bolt rigid coupling, the second gland is rotationally overlapped and is located the outside of transmission shaft, the second gland with the backup pad rigid coupling, the top of second gland stretches out the top cap and with the apron rigid coupling.

Optionally, a second bearing set is further disposed between the sleeve and the transmission shaft.

Optionally, the upper surface of the top cover is further provided with an annular protrusion, the annular protrusion is located between the flange and the outer wall of the second gland, and the height of the annular protrusion is not greater than the height of the second gland extending out of the top cover.

Drawings

FIG. 1 is a schematic diagram of a gas wave booster with two pressure chambers;

FIG. 2 is a schematic diagram of the gas wave booster with a tertiary pressure chamber;

FIG. 3 is a schematic view of the internal structure of the gas wave booster device with two-stage pressure chambers;

FIG. 4 is an enlarged view of A in FIG. 3;

FIG. 5 is an enlarged view of B in FIG. 3;

FIG. 6 is an enlarged view of C in FIG. 3;

fig. 7 is a schematic structural view of the fixing base in fig. 3.

In the accompanying fig. 1-7, the reference numerals are illustrated as follows:

h1-first level high pressure cavity, M1-first level medium pressure cavity, L1-first level low pressure cavity;

h0-last stage high pressure chamber, M0-last stage medium pressure chamber, L0-last stage low pressure chamber;

h2-secondary high pressure cavity, M2-secondary medium pressure cavity, L2-secondary low pressure cavity;

1-a nozzle; 2-rotor, 21-inner sleeve, 22-rotor; 3-oscillating tube; 4-a transmission shaft; 5-a support plate; 6-a shell; 7-top cover, 71-annular protrusion; 8-cover plate, 81-flange; 91-first baffle, 92-second baffle, 93-sleeve; 10-a fixed seat; 11-a fixed shaft; 121-angular contact bearing, 122-deep groove ball bearing, 123-bearing sleeve; 13-second bearing set; 14-a flow guide channel; 15-adjusting cover, 151-step structure; 16-bearing gland, 161-first bearing gland, 162-second bearing gland; 17-a second gland; 18-a high pressure inlet valve; 19-low pressure admission valve.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic diagram of a gas wave booster with two pressure chambers; FIG. 2 is a schematic diagram of the gas wave booster with a tertiary pressure chamber; FIG. 3 is a schematic view of the internal structure of the gas wave booster device with two-stage pressure chambers; FIG. 4 is an enlarged view of A in FIG. 3; FIG. 5 is an enlarged view of B in FIG. 3; FIG. 6 is an enlarged view of C in FIG. 3; fig. 7 is a schematic structural view of the fixing base in fig. 3.

The embodiment of the utility model provides a gas wave supercharging device, it includes the pressure chamber that pressure portion and at least two-stage set gradually, pressure chamber at different levels includes high-pressure chamber respectively, well pressure chamber and low pressure chamber, the high-pressure chamber in first order pressure chamber is connected with high pressure admission valve 18, the low pressure chamber in last stage pressure chamber is connected with low pressure admission valve 19, pressure portion is used for transmitting the energy in order to convert high-pressure gas and well pressure gas to well pressure gas through the pressure wave, gas in the high-pressure intracavity at the same level promptly and the gas in the low pressure intracavity at the same level convert to the well pressure intracavity at the same level through pressure portion, the energy loss that the mixing diffusion caused has been avoided.

That is, only two air intake valves, one is a high pressure air intake valve 18 connected to the high pressure chamber of the first stage pressure chamber, the other is a low pressure air intake valve 19 connected to the low pressure chamber of the last stage pressure chamber, the middle pressure chamber at the front stage is communicated with the high pressure chamber at the rear stage in the two adjacent stages of pressure chambers, the low pressure chamber at the front stage is communicated with the middle pressure chamber at the rear stage, the gas flows from the first stage pressure chamber to the last stage pressure chamber step by step, and a part of the middle pressure gas in the middle pressure chamber of the first stage pressure chamber is used as a product, and the other part is introduced into the high pressure chamber of the next stage pressure chamber adjacent thereto.

The gas pressure in each stage of high-pressure cavity is gradually decreased, the gas pressure in each stage of medium-pressure cavity is gradually decreased, and the gas pressure in each stage of low-pressure cavity is gradually decreased by the multi-stage feedback mode. When the pressure of the first-stage high-pressure gas introduced by the high-pressure gas inlet valve 18 is far greater than the pressure of the last-stage low-pressure gas introduced by the low-pressure gas inlet valve 19, the low-pressure gas introduced by the low-pressure gas inlet valve 19 can be gradually pressurized by the multi-stage feedback mode, and finally the low-pressure gas is used as the first-stage low-pressure gas of the first-stage pressure cavity and is converted with the first-stage high-pressure gas introduced into the first-stage pressure cavity through the high-pressure gas inlet valve 18.

The multi-stage feedback can realize the gradual pressurization of low-pressure gas, the overall larger expansion ratio can be decomposed into multi-stage smaller expansion ratios, and the waste of energy of the high-pressure gas can be avoided while the higher refractive index is ensured; the defects of limited expansion ratio and compression ratio of the traditional gas wave ejector can be overcome, and when the ejected gas pressure is the same, medium-pressure gas production with higher pressure can be obtained, so that the device has wider application range and higher isentropic efficiency.

In the above embodiment, the pressurizing portion includes the rotor 2 and the transmission shaft 4, the rotor 2 is rotatable coaxially with the transmission shaft 4, the side wall of the rotor 2 is provided with the plurality of oscillating pipes 3 at intervals along the circumferential direction thereof, the axial direction of each oscillating pipe 3 is parallel to the axial direction of the rotor 2, the middle pressure chamber of each stage of pressure chamber is provided at one end of the oscillating pipe 3, and the high pressure chamber and the low pressure chamber of each stage of pressure chamber are provided at the other end of the oscillating pipe 3. The transmission shaft 4 drives the rotor 2 to rotate, so that the oscillation tube 3 is sequentially communicated with the high-pressure cavity, the medium-pressure cavity and the low-pressure cavity of each pressure cavity step by step from the first-stage pressure cavity to the final-stage pressure cavity.

In detail, the transmission shaft 4 drives the rotor 2 to rotate, so that the oscillation pipe 3 is sequentially communicated with the high-pressure cavity, the medium-pressure cavity and the low-pressure cavity of the first-stage pressure cavity, then is sequentially communicated with the high-pressure cavity, the medium-pressure cavity and the low-pressure cavity of the second-stage pressure cavity, and then is sequentially communicated with the high-pressure cavity, the medium-pressure cavity and the low-pressure cavity of the third-stage pressure cavity until being communicated with the high-pressure cavity, the medium-pressure cavity and the low-pressure cavity of the final-stage pressure cavity. The oscillating pipe 3 is when communicating with the high-pressure chamber, the high-pressure gas in the high-pressure chamber jets into the oscillating pipe 3 and compresses original gas in the oscillating pipe 3, make original gas upgrade to the middling pressure gas in the oscillating pipe 3, when treating oscillating pipe 3 and middling pressure chamber intercommunication, its inside middling pressure gas will get into the middling pressure intracavity, and because the high pressure is impressed and is penetrated the gas inflation work of doing work, it is lower to lead to the oscillating pipe to lead to one side pressure of this moment orientation high-pressure chamber and low-pressure chamber, when oscillating pipe 3 and low-pressure chamber intercommunication, the low-pressure gas in the low-pressure chamber is penetrated and get into in the oscillating pipe 3, accomplish the pressure boost process that draws of same one-level. The injection pressurization principle is well known to those skilled in the art, and is not described herein for brevity.

Of course, in this embodiment, the superchargers may be provided as the same number of supercharging devices as the number of stages of the pressure chambers, and at this time, each stage of pressure chamber is provided with one supercharging device for transferring energy by pressure waves to convert the high-pressure gas in the high-pressure chamber and the low-pressure gas in the low-pressure chamber into the medium-pressure gas in the medium-pressure chamber. The gas wave supercharging device provided by the embodiment can realize feedback through the cooperation of the single rotor 2 and each stage of pressure cavity, so that the manufacturing cost is saved, the overall size of the equipment is optimized, and the occupied area is reduced.

In the above embodiment, each of the oscillation tubes 3 has the same cross section along the length direction thereof. The same cross section means the same shape and size. Specifically, the cross sections of all the oscillation pipes 3 of the same rotor 2 are the same, and the cross sections of the same oscillation pipe 3 in the length direction thereof are also the same, so that no diameter change occurs. Guarantee this pressure boost portion can realize the gas wave pressure boost steadily. In addition, the number of the oscillation tubes 3 in the embodiment is 20-300, and the length is 100-1000mm, so as to ensure the air wave pressurization effect of the pressurization part. Of course, the length and number of the oscillation tubes 3 are not required, and may be set according to the specific use requirements and the size of the rotor 2.

In the above embodiment, the high pressure chamber, the medium pressure chamber, and the low pressure chamber of each stage of pressure chamber are respectively provided with the nozzle 1 communicated therewith, the nozzle 1 includes a conical cylinder section, a large diameter end of the conical cylinder section is disposed toward the pressure chamber, and a small diameter end of the conical cylinder section is disposed toward the oscillation tube 3 and can be communicated with the oscillation tube 3. The gas in the pressure cavity enters the oscillating tube 3 after passing through the transition of the conical cylinder section, so that the energy loss can be reduced. In particular, the nozzle 1 may comprise only a conical section or may comprise a conical section and a straight section, wherein the straight section is arranged towards the oscillation pipe 3.

In the above embodiment, the side wall of the rotor 2 is provided with a plurality of axial through holes, and the through holes form the oscillation tubes 3, or in the embodiment, the oscillation tubes 3 may be set to be tubular structures connected to the side wall of the rotor 2, and the through holes of the side wall of the rotor 2 are set to be the oscillation tubes 3, so that the overall structure can be simplified and more regular.

In the above embodiment, the rotor 2 includes an inner sleeve 21 and a wave rotor 22 sleeved outside the inner sleeve 21, a cavity is provided between the wave rotor 22 and the inner sleeve 21, the inner sleeve 21 is fixedly connected to the wave rotor 22 and the transmission shaft 4, and the oscillation tube 3 is provided on a side wall of the wave rotor 22. That is, in the present embodiment, the rotor 2 is provided in a split structure, but it is needless to say that the rotor 2 may be provided in an integral structure, the rotor 2 may be provided in a structure of the inner sleeve 21 and the wave rotor 22, and the weight of the rotor 2 may be reduced by providing the cavity between the inner sleeve 21 and the wave rotor 22, so that the entire structure is light and economical.

In the above embodiment, the number of stages of the pressure chambers is set to two stages, in this case, the first-stage pressure chamber includes the first-stage high-pressure chamber H1, the first-stage medium-pressure chamber M1, and the first-stage low-pressure chamber L1, and the last-stage pressure chamber includes the last-stage high-pressure chamber H0, the last-stage medium-pressure chamber M0, and the last-stage low-pressure chamber L0, and in this case, the drive shaft 4 drives the rotor 2 to rotate, so that the oscillation tube 3 is in communication with the first-stage high-pressure chamber H1, the first-stage medium-pressure chamber M1, the first-stage low-pressure chamber L1, the last-stage high-pressure chamber H0.

The first-stage medium-pressure cavity M1 is communicated with the last-stage high-pressure cavity H0, so that one part of medium-pressure gas in the first-stage medium-pressure cavity M1 is used as a product, and the other part of medium-pressure gas is introduced into the last-stage high-pressure cavity H0 to be used as last-stage low-pressure gas, so that the pressure ratio between the last-stage high-pressure gas and injected low-pressure gas (last-stage low-pressure gas) is controlled, and the effect of improving the injection rate is achieved. The gas wave supercharging device can decompose the expansion ratio into two-stage smaller expansion ratio, has wide application range, and is easier to obtain higher isentropic efficiency under large expansion ratio.

Of course, in this embodiment, the number of stages of the pressure chamber may be three or more, and is not particularly limited herein, and may be set according to the expansion ratio and the supercharging efficiency of the supercharging portion. Taking the stage number of the pressure cavities as three stages as an example, the second-stage pressure cavity comprises a second-stage high-pressure cavity H2, a second-stage medium-pressure cavity M2 and a second-stage low-pressure cavity L2, as shown in fig. 2, at this time, the first-stage medium-pressure cavity M1 is communicated with the second-stage high-pressure cavity H2, so that a part of medium-pressure gas in the first-stage medium-pressure cavity M1 is used as a product, another part of the medium-pressure gas is introduced into the second-stage high-pressure cavity H2 as second-stage high-pressure gas, the second-stage medium-pressure cavity M2 is communicated with the last-stage high-pressure cavity H0, so that second-stage medium-pressure gas is introduced into the last-stage high-pressure cavity H0 as last-stage high-pressure gas, the last-stage medium-pressure cavity M0 is communicated with the second-stage low-pressure cavity L2, so that last-stage medium-pressure gas is introduced into the second-stage low-pressure cavity L2 as second-stage low-.

Specifically, the requirement under the conventional working condition can be met when the number of stages of the pressure cavity is two, the index and the isentropic efficiency under the large expansion ratio can be ensured, and compared with a structure with three stages of pressure cavities, the structure has the advantages of simplifying the whole structure, reducing the consumption and being good in economical efficiency.

The working process of each gas wave supercharging device is described in detail as follows by taking the stage number of the pressure cavity as two stages as an example:

(1) the transmission shaft 4 rotates to drive the rotor 2 to rotate, the bottom end of each oscillating tube 3 is sequentially communicated with a first-stage high-pressure cavity H1 in the rotating process of the rotor 2, high-pressure gas in the first-stage high-pressure cavity H1 is injected into the oscillating tube 3, and original gas in the oscillating tube 3 is compressed, so that the original gas in the oscillating tube 3 is boosted into first-stage medium-pressure gas;

(2) when the rotor 2 drives the oscillation tube 3 to continue to rotate until the top end (the end part facing one side of the medium-pressure cavity) is communicated with the first-stage medium-pressure cavity M1, the first-stage medium-pressure gas in the oscillation tube 3 enters the first-stage medium-pressure cavity M1, one part of the first-stage medium-pressure gas in the first-stage medium-pressure cavity M1 is output by an output tube as a final product, and the other part of the first-stage medium-pressure gas as feedback gas is circulated to the last-stage high-pressure cavity H0 through;

(3) the rotor 2 continues to rotate, the bottom end (the end facing one side of the high-pressure cavity and the low-pressure cavity) of the oscillating tube 3 is communicated with the primary low-pressure cavity L1, the pressure of the lower part of the oscillating tube 3 is lower at the moment due to the expansion of high-pressure incident gas in the oscillating tube 3, and the primary low-pressure gas in the primary low-pressure cavity L1 is injected into the oscillating tube 3, so that the primary injection pressurization process is completed;

(4) the rotor 2 continues to rotate, the bottom end of the oscillation tube 3 is communicated with the final-stage high-pressure cavity H0, and at the moment, the feedback gas in the final-stage high-pressure cavity H0 is injected into the oscillation tube 3 to compress the gas in the oscillation tube 3, so that the pressure of the gas in the oscillation tube 3 is increased to final-stage medium-pressure gas;

(5) when the rotor 2 continues to rotate until the oscillation tube 3 is communicated with the final-stage medium-pressure cavity M0, gas at the upper part of the oscillation tube 3 enters the final-stage medium-pressure cavity M0, and final-stage medium-pressure gas in the final-stage medium-pressure cavity M0 is introduced into the primary low-pressure cavity L1 through a pipeline to form gas to be injected in the primary injection pressurization process (primary low-pressure gas);

(6) the rotor 2 continues to rotate until the bottom end of the oscillation pipe 3 is communicated with the final-stage low-pressure cavity L0, the pressure of the lower portion in the oscillation pipe 3 is lower due to the fact that the feedback gas expands to do work, the injected low-pressure gas in the final-stage low-pressure cavity L0 is injected into the oscillation pipe 3, and therefore the final-stage injection pressurization process is completed, and injection of the low-pressure gas is achieved.

Through the pressurization process, the pressure of a high-pressure air source (a first-stage high-pressure gas introduced by the high-pressure air inlet valve 18) can be fully utilized, and under the condition that the introduced low-pressure gas (a final-stage low-pressure gas) has the same pressure, medium-pressure gas (a first-stage medium-pressure gas) with higher pressure than that of the traditional gas wave ejector is obtained, the isentropic efficiency is improved, and high-injection-rate ejection under large expansion ratio is realized through a first-stage medium-pressure gas feedback ejection mode.

In the above embodiment, the gas wave supercharging device further includes a housing 6 and a fixing base 10 fixedly connected to the bottom end of the housing 6, and the rotor 2 is disposed in the housing 6 and located at the bottom of the housing 6; the fixing seat 10 is provided with a high-pressure cavity and a low-pressure cavity of each stage of pressure cavity. As shown in fig. 7, when the number of stages of the pressure chambers is two, the fixing base 10 is provided with a high-pressure chamber (a first-stage high-pressure chamber H1) and a low-pressure chamber (a first-stage low-pressure chamber L1) of a first-stage pressure chamber and a high-pressure chamber (a last-stage high-pressure chamber H0) and a low-pressure chamber (a last-stage low-pressure chamber L0) of a last-stage pressure chamber, and the fixing base 10 is further provided with four nozzles 1 respectively communicated with the four pressure chambers, the rotor 2 is arranged in the housing 6, and the rotation of the rotor 2 can drive the bottom end of the oscillating tube 3 to be communicated with each nozzle 1.

Of course, in this embodiment, the high pressure chamber and the low pressure chamber of each pressure chamber may be disposed in an external structure, the fixing seat 10 is only provided with the nozzle 1 communicated with each high pressure chamber and the low pressure chamber, so that the oscillating tube 3 can be connected with each nozzle 1 in the rotation process, and the fixing seat 10 is provided with the scheme of each high pressure chamber and each low pressure chamber, so that the overall structure can be simplified, the overall structure is more regular, and the occupied volume is small.

In the above embodiment, the gas wave supercharging device further includes a fixed shaft 11 and an adjusting cover 15, wherein the rotor 2 (inner sleeve 21) is rotatably sleeved outside the fixed shaft 11 and an axial limiting member is disposed between the rotor 2 and the fixed shaft 11, such that the axial positions of the rotor 2 and the fixed shaft 11 are relatively fixed, the bottom end of the fixed shaft 11 passes through the fixed seat 10 and is fixed with the adjusting cover 15, the adjusting cover 15 is fixed with the fixed seat 10 by bolts, and the upper end surface of the adjusting cover 15 is provided with a stepped structure 151 (as shown in fig. 4) adapted to the lower shoulder at the bottom of the fixed shaft 11.

Specifically, in this embodiment, the adjusting cover 15 may be an integral structure, or may be a split structure, and is not limited herein. As shown in fig. 1, the adjusting cover 15 of the split structure includes an adjusting flange and a first pressing cover, wherein the adjusting flange is provided with the step structure and is fixedly connected with the fixing base 10, and the first pressing cover abuts against the bottom of the adjusting flange and is fixedly connected with the fixing shaft 11.

During the installation, the accessible adds the gasket between stair structure 151 and the lower shaft shoulder in order to increase the clearance between the up end of fixing base 10 and the lower terminal surface of rotor 2, it is specific, before 15 are adjusted in the installation, place the gasket and will adjust after lid 15 and fixing base 10 and the 11 rigid couplings of fixed axle between stair structure 151 and the lower shaft shoulder, because relative position between 15 and the fixing base 10 of adjusting lid is fixed, make fixed axle 11 upwards remove for fixing base 10, because the effect of axial locating part, make fixed axle 11 drive rotor 2 upwards remove for fixing base 10, and then increased the clearance between the up end of fixing base 10 and the lower terminal surface of rotor 2.

Simultaneously, still add the gasket in order to reduce the clearance between the up end of fixing base 10 and the lower terminal surface of rotor 2 between adjustable cover 15 (adjusting the flange) and the fixing base 10, specifically, install between the adjustable cover 15, add the gasket and will adjust the lid 15 and fixing base 10 and fixed axle 11 rigid coupling back between adjustable cover 15 and fixing base 10, because the relative position between adjustable cover 15 and the fixed axle 11 is fixed, make fixing base 10 for fixed axle 11 rebound, and be close to rotor 2, and then reduced the clearance between the up end of fixing base 10 and the lower terminal surface of rotor 2.

That is to say, the clearance between the upper end face of fixing base 10 and the lower terminal surface of rotor 2 can be adjusted through the outside, and installation convenient operation. Specifically, the gap between the lower surface of the support plate and the upper surface of the rotor 2 is 0.1mm to 5mm, so as to ensure that the rotor 2 can smoothly rotate.

In the above embodiment, as shown in fig. 6, the axial direction limiting member includes the first bearing set and the bearing cover 16, the first bearing set is disposed between the rotor 2 and the fixed shaft 11, and both ends of the first bearing set abut against the bearing cover 16 and the step of the inner wall of the rotor (2), respectively. Specifically, the bearing cover 16 includes a first bearing cover 161 and a second bearing cover 162, the first bearing set includes an angular contact bearing 121, a deep groove ball bearing 122 and a bearing sleeve 123 connected between the contact bearing 121 and the deep groove ball bearing 122, wherein the deep groove ball bearing 122 abuts against a step on the inner wall of the rotor (2), two ends of an outer ring of the angular contact bearing 121 abut against the bearing sleeve 123 and the second bearing cover 162 respectively, and an inner ring of the angular contact bearing 121 is fixed with a shaft shoulder on the top of the fixed shaft 11 through the first bearing cover 161.

Of course, the specific structure of the axial limiting member is not limited as long as it can ensure that the rotor 2 and the fixed shaft 11 are axially fixed relative to each other. The first bearing set is arranged between the fixed shaft 11 and the rotor 2, and can provide a restriction for the rotation of the rotor 2, so that the rotation of the rotor is more stable.

In the above embodiment, the gas wave supercharging device further includes a support plate 5 disposed in the housing 6 and a top cover 7 disposed at the top end of the housing 6, the support plate 5 includes a sleeve 93, and a first partition 91 and at least one second partition 92 fixedly connected to the sleeve, wherein the sleeve 93 is rotatably sleeved outside the transmission shaft 4, the first partition 91, the top cover 7 and the housing 6 enclose to form a cavity, the second partition 92 partitions the cavity into medium-pressure chambers of each pressure chamber, and the number of the second partitions 92 is one less than the number of the pressure chambers. The first partition 91 is provided with nozzles 1 communicating with the respective medium-pressure chambers. Taking the case where the number of stages of the pressure chambers is two, for example, the second partition plate 92 partitions the cavity into a first-stage medium-pressure chamber M1 and a last-stage medium-pressure chamber M0, and the first partition plate 91 is provided with a nozzle 1 of the first-stage medium-pressure chamber M1 and a nozzle 1 of the last-stage medium-pressure chamber M0 which can be communicated with the tip of each oscillation tube 3.

Specifically, the second partition plate 92 in this embodiment divides the first-stage medium-pressure chamber M1 and the last-stage medium-pressure chamber M0 into an upper-layer structure and a lower-layer structure, and at this time, a flow guide channel 14 is provided between the medium-pressure chamber located on the upper layer (the last-stage medium-pressure chamber M0 shown in fig. 3 is located on the upper layer, and the first-stage medium-pressure chamber M1 may also be provided on the upper layer, but not limited thereto) and the nozzle 1 communicated therewith, and of course, the first-stage medium-pressure chamber M1 and the last-stage medium-pressure chamber M0 may also be divided into any chambers that are arranged in parallel and have the same height, and the setting is not limited herein, and may be specifically performed according.

In the above embodiment, the gas wave supercharging device further includes a second adjusting member, the second adjusting member includes a cover plate 8 and a second gland 17, a flange 81 is disposed on a lower surface of the cover plate 8 along a circumferential direction thereof, the cover plate 8 is fixedly connected to the top cover 7 through a bolt, the second gland 17 is rotatably sleeved on an outer side of the transmission shaft 4, the second gland 17 is fixedly connected to the support plate 5, and a top end of the second gland 17 extends out of the top cover 7 and is fixedly connected to the cover plate 8.

During installation, the gap between the lower end face of the supporting plate 5 and the upper end face of the rotor 2 can be increased by additionally arranging a gasket between the flange 81 and the top cover 7, specifically, the gasket is additionally arranged between the flange 81 and the top cover 7 according to the specific size condition before the cover plate 8 is installed, the cover plate 8 is installed to compress the gasket and fixedly connected with the top cover 7 and the cover plate 8, the lower surface of the cover plate 8 is abutted to the upper surface of the second gland 17, due to the addition of the gasket, the distance between the lower surface of the cover plate 8 and the top cover 7 is increased, the top cover 7 and the rotor 2 are relatively fixed, therefore, the cover plate 8 moves upwards relative to the rotor 2, the second gland 17 and the supporting plate 5 also move upwards along with the cover plate 8, and the gap between the lower surface of the supporting plate 5 and the upper surface of the.

Meanwhile, the gap between the lower end face of the support plate 5 and the upper end face of the rotor 2 can be reduced by additionally arranging a gasket between the second gland 17 and the cover plate 8, specifically, before the cover plate 8 is installed, the gasket is additionally arranged between the second gland 17 and the cover plate 8 according to specific size conditions, the cover plate 8 is installed to compress the gasket and is fixedly connected with the top cover 7 and the cover plate 8, at the moment, the relative positions among the cover plate 8, the top cover 7 and the rotor 2 are unchanged, the second gland 17 moves downwards relative to the cover plate 8 due to the additionally arranged gasket, the rotor 2 also moves downwards along with the second gland 17, and further, the gap between the lower surface of the support plate 5 and the upper surface of the rotor 2 is reduced.

That is, the gap between the upper end surface of the rotor 2 and the lower end surface of the support plate 5 can be adjusted through the outside, and the installation and operation are convenient. Specifically, the gap between the lower surface of the support plate 5 and the upper surface of the rotor 2 is 0.1mm to 5mm, so as to ensure that the rotor 2 can smoothly rotate.

Further, a second bearing set 13 is disposed between the sleeve 93 and the transmission shaft 4, and the second bearing set 13 provides a constraint for the transmission shaft 4 to rotate more stably.

In the above embodiment, as shown in fig. 5, the annular protrusion 71 is further disposed on the upper surface of the top cover 7, the annular protrusion 71 is located between the flange 81 and the outer wall of the second gland 17, the inner wall of the annular protrusion 71 contacts with the outer wall of the second gland 17, and the disposition of the annular protrusion 71 increases the contact surface between the top cover 7 and the second gland 17, so as to increase the bearing capacity of the middle portion of the top cover 7, and avoid the deformation of the middle portion of the top cover 7 when the gasket is added and the cover plate 8 is installed. In addition, when the gasket is additionally arranged between the top cover 7 and the cover plate 8, the arrangement of the annular bulge 71 is convenient for limiting the gasket, namely, the gasket is directly sleeved on the outer side of the annular bulge 71, so that the operation is convenient. The height of the annular protrusion 71 is smaller than the height of the second gland 17 extending out of the top cover 7, so that the lower end face of the cover plate 8 and the upper end face of the second gland 17 can be abutted, and the gap between the upper end face of the rotor 2 and the lower end face of the support plate 5 can be increased by additionally arranging a gasket between the annular protrusion 71 and the cover plate 8.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (14)

1. The air wave supercharging device is characterized by comprising a supercharging part and at least two stages of pressure cavities which are sequentially arranged, wherein each stage of pressure cavity comprises a high-pressure cavity, a medium-pressure cavity and a low-pressure cavity respectively, the high-pressure cavity of the first stage of pressure cavity is connected with a high-pressure air inlet valve (18), and the low-pressure cavity of the last stage of pressure cavity is connected with a low-pressure air inlet valve (19);

the pressure boosting part is used for transmitting energy through pressure waves to convert high-pressure gas in the high-pressure cavity of the same stage and low-pressure gas in the low-pressure cavity into medium-pressure gas in the medium-pressure cavity;

in the two adjacent stages of the pressure cavities, a middle pressure cavity at the front stage is communicated with a high pressure cavity at the rear stage, and a low pressure cavity at the front stage is communicated with the middle pressure cavity at the rear stage;

wherein, a part of the medium pressure gas in the medium pressure cavity of the first stage pressure cavity is taken as a product, and the other part of the medium pressure gas is introduced into the high pressure cavity of the rear stage pressure cavity adjacent to the product.

2. The gas wave supercharging device according to claim 1, wherein the supercharging portion comprises a transmission shaft (4) and a rotor (2) which rotates coaxially with the transmission shaft (4), the side wall of the rotor (2) is provided with a plurality of oscillation pipes (3) at intervals along the circumferential direction thereof, the axial direction of each oscillation pipe (3) is parallel to the axial direction of the rotor (2), the medium-pressure cavity of each stage of the pressure cavity is located at one end of the oscillation pipe (3), and the high-pressure cavity and the low-pressure cavity of each stage of the pressure cavity are located at the other end of the oscillation pipe (3);

the transmission shaft (4) drives the rotor (2) to rotate, so that the oscillating tube (3) is sequentially communicated with a high-pressure cavity, a medium-pressure cavity and a low-pressure cavity of each stage of pressure cavity from a first-stage pressure cavity to a final-stage pressure cavity step by step.

3. The gas wave supercharging device according to claim 2, characterized in that the cross section of each of the oscillation tubes (3) in the direction of its length is identical.

4. The gas wave supercharging device according to claim 2, characterized in that the high-pressure chamber, the medium-pressure chamber and the low-pressure chamber of each stage of the pressure chamber are respectively provided with a nozzle (1) communicated therewith, the nozzle (1) comprises a conical barrel section, the large diameter end of the conical barrel section is arranged towards the pressure chamber, and the small diameter end of the conical barrel section is arranged towards the oscillation pipe (3) and can be communicated with the oscillation pipe (3).

5. The gas wave supercharging device according to claim 2, characterized in that the side wall of the rotor (2) is provided with a plurality of axial through holes which form the oscillation tubes (3).

6. The gas wave supercharging device according to claim 2, wherein the rotor (2) includes an inner sleeve (21) and a wave rotor (22) sleeved outside the inner sleeve (21), a cavity is provided between the wave rotor (22) and the inner sleeve (21), the inner sleeve (21) is fixedly connected with the wave rotor (22) and the transmission shaft (4), and the oscillation tube (3) is provided on a side wall of the wave rotor (22).

7. The gas wave supercharging device according to any of claims 2 to 6, wherein the pressure chambers are arranged in two stages.

8. The gas wave supercharging device according to any one of claims 2 to 6, characterized by further comprising a housing (6) and a fixing base (10) fixedly connected to a bottom end of the housing (6), wherein the rotor (2) is located inside the housing (6);

the fixing seat (10) is provided with a high-pressure cavity and a low-pressure cavity of each pressure cavity.

9. The gas wave supercharging device according to claim 8, further comprising a fixed shaft (11) and an adjusting cover (15), wherein the rotor (2) is rotatably sleeved outside the fixed shaft (11), and an axial limiting member is disposed between the rotor (2) and the fixed shaft (11);

the bottom end of the fixed shaft (11) penetrates through the fixed seat (10) and is fixed with the adjusting cover (15), and the adjusting cover (15) is fixed with the fixed seat (10) through bolts;

the upper end face of the adjusting cover (15) is provided with a step structure (151) matched with the lower shaft shoulder at the bottom of the fixing shaft (11).

10. The gas wave supercharging device according to claim 9, wherein the axial stop comprises a first bearing set and a bearing gland (16); the first bearing group is arranged between the rotor (2) and the fixed shaft (11), and two ends of the first bearing group are respectively abutted to the bearing gland (16) and the step on the inner wall of the rotor (2).

11. The gas wave supercharging device according to claim 8, further comprising a support plate (5) disposed in the housing (6) and a top cover (7) disposed at a top end of the housing (6), wherein the support plate (5) includes a sleeve (93), and a first partition plate (91) and at least one second partition plate (92) fixedly connected to the sleeve (93), the sleeve (93) is rotatably sleeved outside the transmission shaft (4), the first partition plate (91), the top cover (7) and the housing (6) enclose a cavity, and the second partition plate (92) divides the cavity into medium-pressure cavities of the pressure cavities.

12. The gas wave supercharging device according to claim 11, further comprising a second adjusting member, wherein the second adjusting member includes a cover plate (8) and a second gland (17), a flange (81) is provided on a lower surface of the cover plate (8) along a circumferential direction thereof, the cover plate (8) is fixedly connected to the top cover (7) through a bolt, the second gland (17) is rotatably sleeved on an outer side of the transmission shaft (4), the second gland (17) is fixedly connected to the support plate (5), and a top end of the second gland (17) extends out of the top cover (7) and is fixedly connected to the cover plate (8).

13. The gas wave supercharging device according to claim 12, characterized in that a second bearing set (13) is further provided between the sleeve (93) and the drive shaft (4).

14. The gas wave supercharging device according to claim 12, characterized in that the upper surface of the top cover (7) is further provided with an annular projection (71), the annular projection (71) is located between the flange (81) and the outer wall of the second gland (17), and the height of the annular projection (71) is not greater than the height of the second gland (17) protruding out of the top cover (7).

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