CN110566515B - Gas-entraining structure on inner side of gas compressor - Google Patents

Gas-entraining structure on inner side of gas compressor Download PDF

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Publication number
CN110566515B
CN110566515B CN201910896051.XA CN201910896051A CN110566515B CN 110566515 B CN110566515 B CN 110566515B CN 201910896051 A CN201910896051 A CN 201910896051A CN 110566515 B CN110566515 B CN 110566515B
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Prior art keywords
air
box
wall
rotating shaft
annular
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CN110566515A (en
Inventor
吴哲
吴才广
印雪梅
马晓健
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AECC Shenyang Engine Research Institute
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AECC Shenyang Engine Research Institute
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

An inboard compressor bleed air structure comprising: an annular outer box is provided with an outer box air-entraining hole, and the inner wall of the annular outer box is provided with a stator blade; the outer wall of the drum barrel on the inner side of the annular outer box is provided with rotor blades distributed with stator blades at intervals, and drum barrel air-guiding holes communicated with the rotor blades and the stator blades are formed in the drum barrel; one end of the annular inner box is inserted between the annular outer box and the drum barrel, and the other end of the annular inner box extends along the annular outer box and is provided with an inner box air-guiding hole; the end part of the rotating shaft neck extends into the inner side of the annular inner box and is connected with one end of the drum barrel, and a shaft neck air-guiding hole is formed; one end of the internal and external air cylinders is connected with the outer wall of the shaft neck of the rotating shaft in a sliding way, and the other end is connected with the inner wall of the annular inner box, and the internal and external air cylinders are communicated with the air-bleed hole of the inner box and the air-bleed hole of the shaft neck; the inlet end of the first air guide pipe penetrates through the air guide hole of the outer box and is inserted into the air guide hole of the inner box; the outer periphery of the inner wheel disk is connected with the inner wall of the drum, and the inner wheel disk and the outer periphery of the inner wheel disk are communicated with an air-entraining hole of the drum; one end of the conduit is connected with the inner wall of the shaft neck of the rotating shaft, and the other end of the conduit penetrates through the inner wheel disc and is sealed with the outer wheel disc.

Description

Gas-entraining structure on inner side of gas compressor
Technical Field
The application belongs to the technical field of air compressor air entraining design, and particularly relates to an inner side air entraining structure of an air compressor.
Background
The performance test of the air compressor often needs to bleed air from the inner side and the outer side of the air compressor, wherein the air bleed from the outer side of the air compressor is simple and is relatively easy to realize; the air introduction from the inner side of the compressor is limited by various factors and is relatively difficult to realize.
The prior art mainly has the following defects from the inboard bleed air of compressor:
1) the problem of leakage exists, and the requirement of bleed air flow is difficult to meet;
2) the stability of air entraining is poor, and the stability requirement is difficult to meet;
3) and lack of bleed air flow measurement and control means.
The present application is made in view of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
It is an object of the present application to provide an inboard bleed air arrangement for a compressor that overcomes or mitigates at least one of the disadvantages of the prior art.
The technical scheme of the application is as follows:
an inboard compressor bleed air structure comprising:
the annular outer box is provided with at least one outer box air-introducing hole;
at least one stator blade connected with the inner wall of the annular outer box;
at least one rotor blade, and each stator blade is distributed at intervals along the axial direction; an inter-blade space is formed between each rotor blade and the adjacent stator blade;
the drum barrel is arranged on the inner side of the annular outer box, the outer wall of the drum barrel is connected with each rotor blade, and at least one drum barrel air-introducing hole is formed in the drum barrel; each drum air-guiding hole is communicated with the space between the blades;
one end of the annular inner box is inserted between the annular outer box and the drum barrel, the other end of the annular inner box extends along the annular outer box, and at least one inner box air-introducing hole is formed in the annular inner box;
the end part of the rotating shaft journal extends into the inner side of the annular inner box and is connected with one end of the drum barrel, and at least one journal air-leading hole is formed in the rotating shaft journal;
the inner inflator is sleeved on the periphery of the rotating shaft journal, one end of the inner inflator is connected with the outer wall of the rotating shaft journal in a sliding way, and the other end of the inner inflator is connected with the inner wall of the annular inner box;
the outer air guiding cylinder is sleeved on the periphery of the rotating shaft journal, one end of the outer air guiding cylinder is connected with the outer wall of the rotating shaft journal in a sliding mode, the other end of the outer air guiding cylinder is connected with the inner wall of the annular inner box, and an inter-cylinder space is formed between the outer air guiding cylinder and the inner air guiding cylinder; each inner box air-bleed hole and each shaft neck air-bleed hole are communicated with the space between the cylinders;
the inlet end of each first air guide pipe correspondingly penetrates through an outer box air guide hole and is inserted into an inner box air guide hole;
the outer wheel disc, its periphery links with inner wall of the drum;
the periphery of the inner wheel disc is connected with the inner wall of the drum barrel, and an inter-disc space is formed between the inner wheel disc and the outer wheel disc; each drum air-guiding hole is communicated with the space between the discs;
one end of the conduit is connected with the inner wall of the shaft neck of the rotating shaft; the other end of the conduit penetrates through the center of the inner wheel disc to be in sealing contact with the outer wheel disc and is communicated with the inner space of the center of the outer wheel disc; a gap is formed between the guide pipe and the inner wheel disc.
According to at least one embodiment of the application, the device further comprises a support ring, wherein the support ring is sleeved on the guide pipe, one end of the support ring is connected with the outer wheel disc, the other end of the support ring is connected with the inner wheel disc, and at least one support ring air guide hole is formed in the support ring.
According to at least one embodiment of the application, the device further comprises at least one air guide tube, one end of each air guide tube is correspondingly inserted into one of the branch ring air guide holes, and the other end of each air guide tube correspondingly extends towards one of the drum air guide holes.
According to at least one embodiment of the present application, further comprising:
the sealing ring is sleeved on the drum barrel, and the periphery of the sealing ring is in fit connection with the inner wall labyrinth honeycomb of the annular inner box;
the periphery of the sealing disc is connected with the inner wall of the drum barrel; the guide pipe passes through the center of the sealing disc, and a gap is reserved between the guide pipe and the sealing disc.
According to at least one embodiment of the application, the device also comprises a balance disc, wherein the periphery of the balance disc is in fit connection with the comb-shaped honeycomb on the inner wall of the annular inner box; the end part of the shaft journal of the rotating shaft is connected with the wall surface of one side of the balance disc; one end of the drum barrel facing the shaft neck of the rotating shaft is connected with the wall surface on the other side of the balance disc; the guide pipe passes through the center of the balance disc and has a gap with the balance disc.
According to at least one embodiment of this application, still include a branch section of thick bamboo, one end is connected with the inner wall of pivot axle journal, and its other end is connected with the pipe towards the pivot axle journal's one end.
According to at least one embodiment of the application, one end of the inner gas introducing cylinder facing the rotating shaft journal is connected with the comb-shaped honeycomb on the outer wall of the rotating shaft journal in a matching way;
one end of the outer air entraining cylinder facing the rotating shaft journal is connected with the comb tooth honeycomb on the outer wall of the rotating shaft journal in a matching way.
According to at least one embodiment of the application, the device further comprises at least one second bleed air pipe, and the inlet end of each second bleed air pipe is correspondingly connected with the outlet end of one first bleed air pipe.
According to at least one embodiment of the present application, further comprising:
the interior of the gas collecting box is communicated with the outlet ends of the second gas guide pipes;
and the inlet end of the third air guide pipe is communicated with the inside of the air collection box.
According to at least one embodiment of the present application, further comprising:
the flowmeter is arranged on the third bleed air pipe;
and the regulating valve is arranged on the third bleed air pipe.
Drawings
FIG. 1 is a schematic structural diagram of an inside air-entraining structure of a compressor provided by an embodiment of the application;
wherein:
1-an annular outer casing; 2-stator blades; 3-rotor blades; 4-a drum; 5-an annular inner casing; 6-shaft journal of the rotating shaft; 7-an internal inflator; 8-externally introducing an air cylinder; 9-a first bleed air duct; 10-an outer wheel disc; 11-an inner wheel disc; 12-a catheter; 13-a branching ring; 14-an airway tube; 15-a sealing ring; 16-a sealing disc; 17-a balance disc; 18-branch cylinder; 19-a second bleed air duct; 20-a gas collection tank; 21-a third bleed air duct; 22-a flow meter; 23-regulating valve.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.
The present application is described in further detail below with reference to fig. 1.
An inboard compressor bleed air structure comprising:
the annular outer box 1 is provided with at least one outer box air-introducing hole; each outer box air-introducing hole is distributed along the circumferential direction;
at least one stator blade 2 connected with the inner wall of the annular outer box 1, distributed along the circumferential direction and arranged in a plurality of rows along the circumferential direction;
at least one rotor blade 3, which is distributed with each stator blade 2 along the axial direction; an inter-blade space is formed between each rotor blade 3 and the adjacent stator blade 2;
the drum barrel 4 is arranged on the inner side of the annular outer box 1, the outer wall of the drum barrel 4 is connected with each rotor blade 3, and at least one drum barrel air-introducing hole is formed in the drum barrel; each drum air-guiding hole is distributed along the circumferential direction and is communicated with the space between the blades;
one end of the annular inner box 5 is inserted between the annular outer box 1 and the drum barrel 4, the other end of the annular inner box extends along the annular outer box 1, and at least one inner box air-leading hole is formed in the annular inner box; the inner box air guide holes are distributed along the circumferential direction.
A rotating shaft journal 6, the end part of which extends into the inner side of the annular inner box 5 and is connected with one end of the drum barrel 4, and at least one journal air-leading hole is arranged on the rotating shaft journal; each shaft neck air guide hole is distributed along the circumferential direction;
an inner air guiding cylinder 7, which is sleeved on the periphery of the rotating shaft journal 6, one end of the inner air guiding cylinder is connected with the outer wall of the rotating shaft journal 6 in a sliding way, and the other end of the inner air guiding cylinder is connected with the inner wall of the annular inner box 5;
the outer air guiding cylinder 8 is sleeved on the periphery of the rotating shaft journal 6, one end of the outer air guiding cylinder is connected with the outer wall of the rotating shaft journal 6 in a sliding mode, the other end of the outer air guiding cylinder is connected with the inner wall of the annular inner box 5, and an inter-cylinder space is formed between the outer air guiding cylinder and the inner air guiding cylinder 7; each inner box air-bleed hole and each shaft neck air-bleed hole are communicated with the space between the cylinders;
the inlet end of each first air guide pipe 9 correspondingly penetrates through an outer box air guide hole and is inserted into an inner box air guide hole;
an outer wheel disc 10, the periphery of which is connected with the inner wall of the drum 4;
an inner wheel disc 11, the periphery of which is connected with the inner wall of the drum barrel 4, and an inter-disc space is formed between the inner wheel disc and the outer wheel disc 10; each drum air-guiding hole is communicated with the space between the discs;
a conduit 12 having one end connected to an inner wall of the shaft journal 6; the other end of the conduit 12 passes through the center of the inner wheel disc 11 to be in sealing contact with the outer wheel disc 10 and is communicated with the inner space of the center of the outer wheel disc 10; there is a gap between the conduit 12 and the inner disc 11.
With regard to the compressor inside bleed air structure disclosed in the above embodiments, it will be understood by those skilled in the art that the gas passing through the rotor blades 3 and the stator blades 2 partially flows out along the exhaust passage formed between the annular outer casing 1 and the annular inner casing 5, and partially flows out along the following paths:
from the interlobe space, the drum air bleed hole, the inter-disc space, the gap between the conduit 12 and the inner disc 11, the inside of the drum 4, the inside of the shaft neck 6, the shaft neck air bleed hole, the inter-drum space, the first air bleed pipe 9;
above-mentioned route has realized drawing the gas in rotor blade 3 and 2 interblade spaces of stator blade from the compressor inboard, and this route ingenious design, each hookup location easily seals and does not have the risk of revealing.
In addition, in the air-entraining structure on the inner side of the air compressor disclosed in the above embodiment, on one hand, an inter-cylinder space is formed between the inner air-entraining cylinder 7 and the air-entraining cylinder 8 to provide a circulation path for the air flow drawn out from the inner side of the air compressor; on the other hand, an inner gas guiding cylinder 7 and an outer gas guiding cylinder 8 are arranged and are in sliding connection with the outer wall of the rotor shaft neck 6, so that transition of an airflow flow path from a rotating part to a static part is realized, and stability of airflow led out from the inner side of the compressor through the path is guaranteed.
In some optional embodiments, the air compressor further comprises a branch ring 13, which is sleeved on the guide pipe 12, and one end of the branch ring is connected with the outer wheel disc 10, and the other end of the branch ring is connected with the inner wheel disc 11, and at least one branch ring air guide hole is arranged on the branch ring air guide hole to provide a circulation path for air flow guided from the inner side of the air compressor.
In some optional embodiments, the device further comprises at least one air duct 14, one end of each air duct 14 is inserted into one of the branch ring air guide holes, and the other end of each air duct 14 extends towards one of the drum air guide holes.
With respect to the compressor inside bleed air structure disclosed in the above embodiments, it will be appreciated by those skilled in the art that the air flowing from the drum bleed air holes into the inter-plate space can flow backwards through the air ducts 14 to improve the stability of the air flow.
In some optional embodiments, further comprising:
the sealing ring 15 is sleeved on the drum barrel 4, and the periphery of the sealing ring is in fit connection with the inner wall labyrinth honeycomb of the annular inner box 5 so as to prevent gas flowing out of the gas compressor from leaking from the sealing ring;
a sealing disc 16, the periphery of which is connected with the inner wall of the drum barrel 4; the duct 12 passes through the core of the sealing disc 16 with clearance from the sealing disc 16 to provide a flow path for the air flow from the inside of the compressor.
In some optional embodiments, the device further comprises a balance disc 17, the periphery of which is in matched connection with the inner wall labyrinth honeycomb of the annular inner box 5; the end part of the rotating shaft journal 6 is connected with the wall surface on one side of the balance disk 17; one end of the drum barrel 4 facing the shaft journal 6 is connected with the wall surface on the other side of the balance disc 17; the conduit 12 passes through the center of the balance disc 17 with a gap between the balance disc 17.
With respect to the air-entraining structure at the inner side of the compressor disclosed in the above embodiment, it can be understood by those skilled in the art that the balance disk 17 can be used to balance the axial force of the rotor, thereby enhancing the stability of the structure, and in addition, the gap between the duct and the balance disk 17 can be provided to provide a flow path for the air flow guided from the inner side of the compressor.
In some alternative embodiments, a support tube 18 is further included, one end of which is connected to the inner wall of the spindle journal 6, and the other end of which is connected to the end of the conduit 12 facing the spindle journal 6.
In some alternative embodiments, one end of the inner gas cylinder 7 facing the spindle journal 6 is connected with the comb-shaped honeycomb on the outer wall of the spindle journal 6 in a matching way;
one end of the external air induction cylinder 8 facing the rotating shaft journal 6 is connected with the comb-shaped honeycomb on the outer wall of the rotating shaft journal 6 in a matching way.
With regard to the air-entraining structure on the inner side of the air compressor disclosed in the above embodiment, it can be understood by those skilled in the art that the arrangement of the inner air-entraining cylinder 7 and the air-entraining cylinder 8 in matching connection with the labyrinth honeycomb on the outer wall of the rotor journal 6 can prevent the air flow from leaking from the inner air-entraining structure.
In some optional embodiments, at least one second bleed air pipe 19 is further included, and an inlet end of each second bleed air pipe 19 is connected to an outlet end of one first bleed air pipe 9.
In some optional embodiments, further comprising:
the interior of the gas collecting box 20 is communicated with the outlet ends of the second gas guide pipes 19;
and the inlet end of the third bleed air pipe 21 is communicated with the interior of the gas collecting box 20.
For the air-bleed structure inside the compressor disclosed in the above embodiments, it can be understood by those skilled in the art that the air-collecting box 20 is configured to collect the air flow flowing out from each second air-bleed pipe 19, so as to buffer the air flow led out from the inside of the compressor, and enhance the stability of the air flow.
In some optional embodiments, further comprising:
a flow meter 22 provided on the third bleed air duct 21;
and a regulating valve 23 provided in the third bleed air duct 21.
With regard to the air-bleed structure inside the compressor disclosed in the above embodiment, it can be understood by those skilled in the art that the flow meter 22 and the adjusting valve 23 are arranged on the third air-bleed pipe 21, so as to detect the flow rate of the air flow led out from the inside of the compressor and adjust and control the flow rate.
So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.

Claims (10)

1. An inboard bleed structure of compressor, its characterized in that includes:
the annular outer box (1) is provided with at least one outer box air-leading hole;
at least one stator blade (2) connected with the inner wall of the annular outer box (1);
at least one rotor blade (3) which is distributed with each stator blade (2) along the axial direction at intervals; an inter-blade space is formed between each rotor blade (3) and the adjacent stator blade (2);
the drum barrel (4) is arranged on the inner side of the annular outer box (1), the outer wall of the drum barrel is connected with each rotor blade (3), and at least one drum barrel air-guiding hole is formed in the drum barrel; each drum air guide hole is communicated with the inter-leaf space;
one end of the annular inner box (5) is inserted between the annular outer box (1) and the drum barrel (4), the other end of the annular inner box extends along the annular outer box (1), and at least one inner box air-leading hole is formed in the annular inner box;
the end part of the rotating shaft journal (6) extends into the inner side of the annular inner box (5) and is connected with one end of the drum barrel (4), and at least one journal air-guiding hole is formed in the rotating shaft journal;
the inner air guiding cylinder (7) is sleeved on the periphery of the rotating shaft journal (6), one end of the inner air guiding cylinder is connected with the outer wall of the rotating shaft journal (6) in a sliding mode, and the other end of the inner air guiding cylinder is connected with the inner wall of the annular inner box (5);
the outer air introducing cylinder (8) is sleeved on the periphery of the rotating shaft journal (6), one end of the outer air introducing cylinder is connected with the outer wall of the rotating shaft journal (6) in a sliding mode, the other end of the outer air introducing cylinder is connected with the inner wall of the annular inner box (5), and an inter-cylinder space is formed between the outer air introducing cylinder and the inner air introducing cylinder (7); each inner box air-bleed hole and each shaft neck air-bleed hole are communicated with the space between the cylinders;
the inlet end of each first air guide pipe (9) correspondingly penetrates through one outer box air guide hole to be inserted into one inner box air guide hole;
an outer wheel disc (10) the periphery of which is connected with the inner wall of the drum barrel (4);
the outer periphery of the inner wheel disc (11) is connected with the inner wall of the drum barrel (4), and an inter-disc space is formed between the inner wheel disc and the outer wheel disc (10); each drum air-guiding hole is communicated with the inter-disc space;
a conduit (12) having one end connected to the inner wall of the shaft journal (6); the other end of the guide pipe (12) penetrates through the center of the inner wheel disc (11) to be in sealing contact with the outer wheel disc (10), and is communicated with the inner space of the center of the outer wheel disc (10); a gap is formed between the guide tube (12) and the inner wheel disc (11).
2. The compressor inside air-entraining structure according to claim 1,
the device is characterized by further comprising a supporting ring (13) sleeved on the guide pipe (12), wherein one end of the supporting ring is connected with the outer wheel disc (10), the other end of the supporting ring is connected with the inner wheel disc (11), and at least one supporting ring air-leading hole is formed in the supporting ring.
3. The compressor inside air-entraining structure according to claim 2,
the air guide device further comprises at least one air guide pipe (14), one end of each air guide pipe (14) is correspondingly inserted into one branch ring air guide hole, and the other end of each air guide pipe (14) correspondingly extends towards one drum air guide hole.
4. The compressor inside air-entraining structure according to claim 1,
further comprising:
the sealing ring (15) is sleeved on the drum barrel (4), and the periphery of the sealing ring is connected with the inner wall labyrinth honeycomb of the annular inner box (5) in a matched manner;
a sealing disc (16), the periphery of which is connected with the inner wall of the drum barrel (4); the conduit (12) passes through the center of the sealing disk (16) with a gap between the sealing disk (16).
5. The compressor inside air-entraining structure according to claim 1,
the balance disc (17) is matched and connected with the inner wall labyrinth honeycomb of the annular inner box (5) at the periphery; the end part of the rotating shaft journal (6) is connected with the wall surface of one side of the balance disc (17); one end of the drum barrel (4) facing the rotating shaft journal (6) is connected with the wall surface on the other side of the balance disc (17); the guide pipe (12) passes through the center of the balance disc (17) and has a gap with the balance disc (17).
6. The compressor inside air-entraining structure according to claim 1,
the device also comprises a support cylinder (18), one end of the support cylinder is connected with the inner wall of the rotating shaft journal (6), and the other end of the support cylinder is connected with one end, facing the rotating shaft journal (6), of the conduit (12).
7. The compressor inside air-entraining structure according to claim 1,
one end of the inner gas introducing cylinder (7) facing the rotating shaft journal (6) is connected with the outer wall labyrinth honeycomb of the rotating shaft journal (6) in a matching way;
one end of the external air induction cylinder (8) facing the rotating shaft journal (6) is connected with the outer wall labyrinth honeycomb of the rotating shaft journal (6) in a matching way.
8. The compressor inside air-entraining structure according to claim 1,
the device also comprises at least one second air-entraining pipe (19), wherein the inlet end of each second air-entraining pipe (19) is correspondingly connected with the outlet end of one first air-entraining pipe (9).
9. The compressor inside air-entraining structure according to claim 8,
further comprising:
the interior of the gas collecting box (20) is communicated with the outlet ends of the second gas guide pipes (19);
and the inlet end of the third air guide pipe (21) is communicated with the inside of the air collecting box (20).
10. The compressor inside air-entraining structure according to claim 9,
further comprising:
a flow meter (22) arranged on the third bleed air duct (21);
a regulating valve (23) arranged on the third bleed air pipe (21).
CN201910896051.XA 2019-09-22 2019-09-22 Gas-entraining structure on inner side of gas compressor Active CN110566515B (en)

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CN112228379B (en) * 2020-10-16 2022-11-22 中国航发沈阳发动机研究所 Air entraining pipe
CN112628208A (en) * 2020-12-23 2021-04-09 中国航发沈阳发动机研究所 Air entraining structure of air compressor
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