CN110410321B - Rotary pressure matcher - Google Patents
Rotary pressure matcher Download PDFInfo
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- CN110410321B CN110410321B CN201910698367.8A CN201910698367A CN110410321B CN 110410321 B CN110410321 B CN 110410321B CN 201910698367 A CN201910698367 A CN 201910698367A CN 110410321 B CN110410321 B CN 110410321B
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- Prior art keywords
- air suction
- hole
- end cover
- pressure
- cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
- F04C18/3445—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the vanes having the form of rollers, slippers or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2210/00—Fluid
- F04C2210/24—Fluid mixed, e.g. two-phase fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a rotary pressure matcher, which comprises a cylinder rear end cover, a cylinder body and a cylinder front end cover, wherein the cylinder rear end cover is provided with a cylinder front end cover; the two ends of the top and the bottom of the cylinder body are fixedly connected with a cylinder front end cover and a cylinder rear end cover, a first through hole is formed in the center of the cylinder body, an eccentric wheel shaft is arranged in the first through hole, a swing rotor is sleeved outside the eccentric wheel shaft, a low-pressure air suction hole and a high-pressure air suction hole are formed in the cylinder front end cover, an air suction channel is sequentially communicated with the low-pressure air suction hole and the high-pressure air suction hole in the rotating process, and an exhaust. The invention has the beneficial effects that: the rotary pressure matcher realizes low-pressure and high-pressure steam suction mixing by changing the mutual positions of the swing rotor, the eccentric wheel shaft and the front end cover of the cylinder, and has higher efficiency compared with a jet pressure matcher adopted for realizing the same purpose.
Description
Technical Field
The invention relates to the technical field of pressure matchers, in particular to a rotary pressure matcher.
Background
The pressure adapter is usually used to mix two vapors with different pressures before sending them to the next process. The current common pressure matcher is a jet pressure matcher, and the jet pressure matcher is used for injecting high-pressure steam from a nozzle at a high speed, sucking low-pressure steam from an injection port by using jet flow, mixing the two streams of steam in a mixing chamber to form medium-pressure steam, then discharging the medium-pressure steam from a diffuser, and sending the medium-pressure steam to the next process. The jet pressure adapter involves high-speed jet mixing of the vapor, resulting in large irreversible losses and low efficiency.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rotary pressure adapter, which can continuously mix low-pressure steam and high-pressure steam into medium-pressure steam by an energy source and send the medium-pressure steam to the next process, and has small irreversible loss and higher efficiency.
The technical scheme for solving the technical problems is as follows: the air cylinder comprises an air cylinder rear end cover, an air cylinder body and an air cylinder front end cover; the two ends of the top and the bottom of the cylinder body are fixedly connected with the cylinder front end cover and the cylinder rear end cover, the center of the cylinder body is provided with a first through hole, an eccentric wheel shaft is arranged in the first through hole, one end of the eccentric wheel shaft is rotationally connected with one end, facing the cylinder body, of the front end cover of the cylinder, the other end of the eccentric wheel shaft passes through and extends out of the rear end cover of the cylinder, a swinging rotor is sleeved outside the eccentric wheel shaft, an air suction channel is arranged on the end surface of the eccentric wheel shaft close to the front end cover of the air cylinder, an air suction connecting port communicated with the air suction channel is arranged on the end surface of the swing rotor close to the front end cover of the air cylinder, the cylinder front end cover is provided with a low-pressure air suction hole and a high-pressure air suction hole, the air suction channel is sequentially communicated with the low-pressure air suction hole and the high-pressure air suction hole in the rotating process of the eccentric wheel shaft, and the side wall of the cylinder body is provided with an exhaust hole communicated with the first through hole.
The invention has the beneficial effects that: the swing rotor is driven to roll and swing through the eccentric wheel shaft, the air suction channel on the static eccentric wheel shaft of the front end cover of the air cylinder is communicated with the low-pressure air suction hole and the high-pressure air suction hole in sequence in the rotating process, low-pressure steam and high-pressure steam are converged into the air suction cavity through the air suction connecting port, and when the air suction cavity is changed into the exhaust cavity, medium-pressure mixed steam is exhausted from the exhaust port in a rotating period.
Further, be equipped with the arc wall on the inner wall of cylinder block, be equipped with on the cylinder block and run through the second through-hole at cylinder block top bottom both ends, the second through-hole is established the arc wall is kept away from one side of first through-hole, just the arc wall with second through-hole intercommunication, be equipped with in the arc wall outer wall with the inner wall sliding connection's of arc wall cylindrical guide rail, be equipped with the extension on the swing rotor lateral wall, the extension passes cylindrical guide rail stretches into in the second through-hole.
The beneficial effect of adopting above-mentioned further scheme is that guarantee swing rotor can keep moving continuously.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the air suction channel comprises an annular channel at the outer edge of the eccentric wheel shaft, an arc-shaped channel distributed in the end face of the eccentric wheel shaft and concentric with the eccentric wheel shaft, and a straight channel communicated with the annular channel and the arc-shaped channel, wherein the annular channel is sequentially communicated with the low-pressure air suction hole and the high-pressure air suction hole in the rotating process of the eccentric wheel shaft.
The beneficial effect of adopting above-mentioned further scheme is that each part of guaranteeing the channel of breathing in keeps the connected state always, breathes in, high pressure is breathed in to the low pressure in the rotation process.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the low-pressure air suction holes and the high-pressure air suction holes are circumferentially and uniformly distributed on the front end cover of the cylinder.
The beneficial effect of adopting the above-mentioned further scheme is simple structure.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the suction connection port is provided near the extension portion.
The beneficial effect who adopts above-mentioned further scheme is guaranteeing that the connector of breathing in is breathing in the intracavity always, and can not appear in the exhaust chamber, avoids appearing in the exhaust chamber middling pressure mixed steam and flows backward toward low pressure suction hole or high-pressure steam directly irritates to the exhaust chamber through high-pressure suction hole.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an eccentric axle;
FIG. 3 is a schematic view of an oscillating rotor;
FIG. 4 is a schematic diagram of the exhaust and low pressure suction process;
FIG. 5 is a schematic view of the end of low pressure inspiration;
FIG. 6 is a schematic illustration of the exhaust and high pressure suction mixing process;
FIG. 7 is a schematic diagram of the end of high pressure inspiration;
in the drawings, the components represented by the respective reference numerals are listed below:
1. the cylinder comprises a cylinder rear end cover, a cylinder body, a cylindrical guide rail, a vent hole, an air suction channel, an eccentric wheel shaft, a low-pressure air suction hole, a high-pressure air suction hole, a cylinder front end cover, a swinging rotor, an air suction connecting port, an air suction cavity, a swing rotor, an air suction connecting port, an air suction cavity and an exhaust cavity, wherein the cylinder rear end cover is 2, the cylinder body is 3, the cylindrical guide rail is 4, the.
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or circuit connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Further, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 to 7, in the present embodiment, a rotary pressure adaptor includes a cylinder rear end cover 1, a cylinder block 2, and a cylinder front end cover 9; the two ends of the top and the bottom of the cylinder body 2 are fixedly connected with a cylinder front end cover 9 and a cylinder rear end cover 1, a first through hole is formed in the center of the cylinder body 2, an eccentric wheel shaft 6 is arranged in the first through hole, one end of the eccentric wheel shaft 6 is rotatably connected with one end, facing the cylinder body 2, of the cylinder front end cover 9, and the other end of the eccentric wheel shaft 6 penetrates through and extends out of the cylinder rear end cover 1. Be equipped with the arc wall on the inner wall of cylinder block 2, be equipped with the second through-hole that runs through cylinder block 2 top bottom both ends on cylinder block 2, the second through-hole is established in the one side that first through-hole was kept away from to the arc wall, and arc wall and second through-hole intercommunication are equipped with outer wall and the cylindrical guide rail 3 of the inner wall sliding connection of arc wall in the arc wall, is equipped with the extension on the swing rotor 10 lateral wall, and the extension slides and passes cylindrical guide rail 3 and stretch into in the second through-hole, makes swing rotor 10 can keep continuous motion.
When the device works, the motor drives the eccentric wheel shaft 6 to rotate to drive the swing rotor 10 to rotate and swing, the cylinder front end cover 9 keeps static, the relative positions of the air suction channel 5 on the eccentric wheel shaft 6 and the low-pressure air suction hole 7 and the high-pressure air suction hole 8 on the cylinder front end cover 9 are enabled to be changed continuously in the rotation period of the eccentric wheel shaft 6, when the air suction channel 5 is communicated with any air suction hole, steam enters the air suction cavity 12 after sequentially passing through the air suction hole, the air suction channel 5 and the air suction connecting port 11, in the rotating process of the eccentric wheel shaft 6, the air suction cavity 12 sucks air through continuous increase of the volume, and the exhaust cavity 13 discharges mixed steam from the exhaust hole 4 through continuous decrease of the volume.
Example 2:
in this embodiment, fig. 2 is a schematic view of an eccentric shaft. The end face, close to the front end cover 9 of the cylinder, of the eccentric wheel shaft 6 is provided with an annular air suction channel 5, the air suction channel 5 comprises an annular channel at the outer edge of the eccentric wheel shaft 6, an arc-shaped channel distributed inside the end face of the eccentric wheel shaft 6 and concentric with the eccentric wheel shaft 6 and a straight channel communicated with the annular channel and the arc-shaped channel, the arc-shaped channel is sequentially communicated with a low-pressure air suction hole 7 and a high-pressure air suction hole 8 in the rotating process of the eccentric wheel shaft 6, the low-pressure air suction hole 7 and the high-pressure air suction hole 8 are uniformly distributed on the front end cover 9 of the cylinder in the circumferential direction, and the; the length of the arc-shaped channel is determined, so that high-pressure air suction is immediately carried out after low-pressure air suction is finished, and the high-pressure air suction is sequentially alternated without mutual interference. The rest of the present embodiment is the same as that disclosed in embodiment 1.
Example 3:
in this embodiment, fig. 3 is a schematic view of the swing rotor. The swing rotor 10 is provided with the connector 11 of breathing in on being close to the terminal surface of cylinder front end housing 9, and the connector 11 of breathing in is close to the extension sets up, guarantees that the connector of breathing in is always in the chamber 12 of breathing in, and can not appear in the exhaust chamber 13, avoids appearing the mixed vapour of middling pressure in the exhaust chamber 13 and flows backwards toward low pressure suction opening 7 or high-pressure steam directly irritates exhaust chamber 13 through high pressure suction opening 8. The area of the swing rotor 10 and the right side of the first through hole is an exhaust cavity 13, and the area of the swing rotor 10 and the left side of the first through hole is an air suction cavity 12. The rest of the present embodiment is the same as that disclosed in embodiment 2.
Example 4:
in this embodiment, the exhaust and low pressure suction processes are schematically shown in fig. 4. The air suction channel 5 on the end face of the eccentric wheel shaft 6 is communicated with the low-pressure air suction hole 7, at the moment, the low-pressure air suction hole 7, the air suction channel 5 and the air suction connecting port 11 are communicated with each other, and low-pressure steam is sucked into the air suction cavity 12 after sequentially passing through the low-pressure air suction hole 7, the air suction channel 5 and the air suction connecting port 11. The exhaust chamber 13 is now discharging the mixed vapor by decreasing its volume. The rest of the present example is the same as that disclosed in example 3.
Example 5:
in this embodiment, fig. 5 is a schematic diagram showing the end of low-pressure suction. The air suction channel 5 on the end surface of the eccentric wheel shaft 6 is disconnected with the low-pressure air suction hole 7, and the low-pressure air suction is finished. The rest of the present example is the same as that disclosed in example 4.
Example 6:
in this embodiment, fig. 6 is a schematic diagram of the mixing process of the exhaust gas and the high-pressure suction gas. The air suction channel 5 on the end face of the eccentric wheel shaft 6 is communicated with the high-pressure air suction hole 8, at the moment, the high-pressure air suction hole 8, the air suction channel 5 and the air suction connecting port 11 are communicated with each other, and high-pressure steam is sucked into the air suction cavity 12 and mixed with low-pressure steam in the air suction cavity 12 to form medium-pressure mixed steam after sequentially passing through the high-pressure air suction hole 8, the air suction channel 5 and the air suction connecting port 11. The exhaust chamber 13 exhausts the mixed vapor by decreasing the volume. The rest of the present example is the same as that disclosed in example 5.
Example 7:
in this embodiment, fig. 7 is a schematic view of the end of high-pressure suction. The air suction channel 5 on the end surface of the eccentric wheel shaft 6 is disconnected with the high-pressure air suction hole 8, and the high-pressure air suction is finished. At this time, the suction chamber of the cycle is changed into the exhaust chamber of the next cycle, and the pressure adapter enters the next working cycle. The rest of the present example is the same as that disclosed in example 6.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A rotary pressure adapter is characterized in that: comprises a cylinder rear end cover (1), a cylinder body (2) and a cylinder front end cover (9); the air cylinder comprises an air cylinder body (2), wherein the top end and the bottom end of the air cylinder body (2) are fixedly connected with an air cylinder front end cover (9) and an air cylinder rear end cover (1), a first through hole is formed in the center of the air cylinder body (2), an eccentric wheel shaft (6) is arranged in the first through hole, one end of the eccentric wheel shaft (6) is rotatably connected with one end, facing the air cylinder body (2), of the air cylinder front end cover (9), the other end of the eccentric wheel shaft (6) penetrates through and extends out of the air cylinder rear end cover (1), a swing rotor (10) is sleeved outside the eccentric wheel shaft (6), an air suction channel (5) is formed in the end face, close to the air cylinder front end cover (9), of the swing rotor (10), an air suction connecting port (11) communicated with the air suction channel (5) is formed in the end face, close to the air cylinder front end cover (9), the high-pressure air suction hole (8), the air suction channel (5) is in the eccentric shaft (6) rotates in-process and communicates in proper order low pressure air suction hole (7), high pressure air suction hole (8), be equipped with on the lateral wall of cylinder block (2) and communicate exhaust hole (4) of first through-hole.
2. The rotary pressure adapter as claimed in claim 1, wherein: be equipped with the arc wall on the inner wall of cylinder block (2), be equipped with on cylinder block (2) and run through the second through-hole at cylinder block (2) top bottom both ends, the second through-hole is established the arc wall is kept away from one side of first through-hole, just the arc wall with second through-hole intercommunication, be equipped with in the arc wall the outer wall with the inner wall sliding connection's of arc wall cylindrical guide rail (3), be equipped with the extension on swing rotor (10) lateral wall, the extension slides and passes cylindrical guide rail (3) stretch into in the second through-hole.
3. The rotary pressure adapter as claimed in claim 2, wherein: the air suction channel (5) comprises an annular channel at the outer edge of the eccentric wheel shaft (6), an arc-shaped channel distributed in the end face of the eccentric wheel shaft (6) and concentric with the eccentric wheel shaft (6), and a straight channel communicated with the annular channel and the arc-shaped channel, wherein the annular channel is sequentially communicated with the low-pressure air suction hole (7) and the high-pressure air suction hole (8) in the rotating process of the eccentric wheel shaft (6).
4. The rotary pressure matching unit as claimed in claim 3, wherein: the low-pressure air suction holes (7) and the high-pressure air suction holes (8) are circumferentially and uniformly distributed on the front end cover (9) of the cylinder.
5. The rotary pressure matching unit as claimed in claim 4, wherein: the air suction connecting port (11) is arranged close to the extending part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698367.8A CN110410321B (en) | 2019-07-31 | 2019-07-31 | Rotary pressure matcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698367.8A CN110410321B (en) | 2019-07-31 | 2019-07-31 | Rotary pressure matcher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110410321A CN110410321A (en) | 2019-11-05 |
| CN110410321B true CN110410321B (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910698367.8A Active CN110410321B (en) | 2019-07-31 | 2019-07-31 | Rotary pressure matcher |
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| CN (1) | CN110410321B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727762B (en) * | 2021-01-11 | 2023-03-31 | 桂林航天工业学院 | Sliding vane type pressure matcher |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5195055B2 (en) * | 2008-06-11 | 2013-05-08 | ダイキン工業株式会社 | Rotary compressor |
| CN101709701B (en) * | 2009-12-22 | 2011-08-10 | 西安庆安制冷设备股份有限公司 | Single-cylinder multistage gas-compression rolling piston compressor |
| KR101667710B1 (en) * | 2009-12-22 | 2016-10-28 | 엘지전자 주식회사 | Rotary compressor |
| US9267504B2 (en) * | 2010-08-30 | 2016-02-23 | Hicor Technologies, Inc. | Compressor with liquid injection cooling |
| CN204494088U (en) * | 2015-03-10 | 2015-07-22 | 台州森林造纸有限公司 | Pressure matcher |
| US10030658B2 (en) * | 2016-04-27 | 2018-07-24 | Mark W. Wood | Concentric vane compressor |
| CN106968947B (en) * | 2016-11-10 | 2019-05-03 | 桂林航天工业学院 | Swinging rotor type compressor |
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| CN110410321A (en) | 2019-11-05 |
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