CN115479035B - Air sealing device and air compressor - Google Patents
Air sealing device and air compressor Download PDFInfo
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- CN115479035B CN115479035B CN202211191764.4A CN202211191764A CN115479035B CN 115479035 B CN115479035 B CN 115479035B CN 202211191764 A CN202211191764 A CN 202211191764A CN 115479035 B CN115479035 B CN 115479035B
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- volute
- gas
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Classifications
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
- F04D29/104—Shaft sealings especially adapted for elastic fluid pumps the sealing fluid being other than the working fluid or being the working fluid treated
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention provides an air sealing device and an air compressor, relates to the technical field of air compressors, and solves the technical problems that in the prior art, an external cooling device is needed in the air, the system structure is easy to become large in size, and water vapor easily enters an inner cavity of a motor. The air seal device comprises an air compression end, a machine body and an exhaust end, wherein the first end of the machine body is provided with an air inlet channel, the air inlet channel is communicated with the air compression end, the second end of the machine body is provided with an exhaust channel, high-pressure air at the air compression end enters an inner cavity of the machine body through the air inlet channel, the high-pressure air is discharged from the exhaust channel, and an air seal isolation layer is formed at a gap of the second end of the machine body.
Description
Technical Field
The invention relates to the technical field of air compressors, in particular to an air sealing device and an air compressor.
Background
Emissions of non-methane organics and carbon monoxide from fuel-powered automobiles are well known as a major source of pollution to the atmosphere, while automobiles are also important consumers of fossil energy. In order to thoroughly solve the problem of automobile exhaust emission and find new energy to replace traditional energy, various countries in the world are continually striving to explore.
The national economy development speed is strong, the industrial modernization process is continuously accelerated, the energy demand is rapidly increased, the automobile possession is also unprecedented to be increased, the fuel cell technology is selected as a break, and the research and development of the fuel cell automobile is becoming an important strategic project of the country.
In the field of new energy fuel cells, an air compressor generally adopts a high-speed motor direct-drive turbine machine to integrate a motor function and a gear speed-increasing transmission structure, and adopts an air suspension bearing to support a rotor. The high-speed motor main shaft directly drives the turbine impeller to work to generate high-pressure gas for supplying oxygen for the reactor, and meanwhile, the main shaft is provided with a recovery turbine to recover tail gas after the reactor reaction, so that the labor consumption of the motor is further reduced, the system efficiency is improved, and the high-speed direct-driven centrifugal air compressor is named as a 'fuel cell turbine recovery air compressor' in the industry and is the most advanced product in the field of the current fuel cell air compressors.
The new energy fuel cell centrifugal air compressor is applied to new energy automobiles, so that strict requirements are placed on the structure, performance, volume, weight, stability and impact resistance of products. The air compressor of the fuel cell must be miniaturized as much as possible, limited by the space limitation of the automobile, the oversized volume occupies a larger space used in the automobile, and the larger mass increases the dead weight of the automobile, which affects the performance of the whole automobile. In addition, the air compressor must be highly efficient, and unlike conventional internal combustion engines, the tail gas energy of the fuel cell is relatively low, and the power output by the fuel cell stack has a large parasitic compressor power, so that the air compressor needs to be operated at high efficiency.
The working process of the current commonly used fuel cell turbine recovery air compressor comprises the following steps:
in the first stage, air is introduced from the air compressing end, high-pressure air required by the reactor reaction is achieved after primary compression, then the air compressing end is discharged, and the air is sent to the reactor reaction of the system through the exhaust pipe.
And in the second stage, the waste gas after the galvanic pile reaction is conveyed to the exhaust end of the turbine, and the waste gas with residual internal energy and kinetic energy blows the turbine to rotate so as to complete the whole energy recovery process.
In the working process, the external cooling water is needed to cool the motor stator, the external air source is used for introducing cooling air into the inner cavity of the motor, the cooling air flows through the surface of the rotor to take away heat, and then flows out from the other side of the motor shell, so that the motor rotor and the support bearing are cooled.
However, for such a fuel cell turbine recovery air compressor, because an external air source is required to cool the inner cavity of the motor and the air source required to support the air bearing, a cooling device such as a cooling fan is required to be additionally arranged, which results in complex structure, large volume and heavy mass of the whole system.
Moreover, the waste gas after the reactor reaction contains a large amount of water vapor and even liquid water drops, and the waste gas enters the turbine, and if the sealing cannot be blocked, the water vapor or the liquid water can enter the inner cavity of the motor. Moreover, because the gap between the rotor and the stator of the high-speed motor is very small, the air quantity of the cooling air circulated by the external air source is limited, the cooling effect is not obvious, and the small gap between the stator and the rotor of the motor causes great circulating resistance and the overall cooling effect is not good.
Therefore, how to solve the technical problems that the external cooling device is needed in the prior art, the complex structure of the system is easy to cause the large volume and the water vapor easily enters the inner cavity of the motor is an important technical problem to be solved by the personnel in the field.
Disclosure of Invention
The invention aims to provide an air sealing device and an air compressor, which solve the technical problems that in the prior art, the air compressor needs an external cooling device, the system structure is easy to be complicated, the volume is large, and water vapor is easy to enter an inner cavity of a motor. The preferred technical solutions of the technical solutions provided by the present invention can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides an air seal device which comprises an air compression end, a machine body and an exhaust end, wherein the air compression end is arranged at a first end of the machine body, the first end of the machine body is provided with an air inlet channel, the air inlet channel is communicated with the air compression end, the exhaust end is arranged at a second end of the machine body, and the second end of the machine body is provided with the exhaust channel, wherein high-pressure air of the air compression end enters an inner cavity of the machine body through the air inlet channel to be cooled, the high-pressure air is discharged from the air outlet channel, and an air seal isolation layer is formed at a gap of the second end of the machine body.
Further, the air compressing end comprises a centrifugal impeller and a first volute, the first volute is covered on the outer side of the centrifugal impeller, the side wall of the first volute is close to the end face of the first end of the machine body at the circumferential edge position of the centrifugal impeller, so that a diffusion section is formed, and the air inlet channel is located at the position of the diffusion section.
Further, the machine body comprises a shell and a bearing seat, the bearing seat is arranged at the first end of the shell, the first end of the shell is an end close to the air compressing end, and the air inlet channel is arranged on the bearing seat.
Further, the machine body further comprises a stator and a rotor, the rotor is rotationally connected with the shell, the rotor is coaxially arranged with the air compressing end and the air exhausting end, the stator is sleeved on the outer circumference of the rotor, the stator is connected with the shell, and a gap is formed between the stator and the rotor to form a cooling channel.
Further, the novel air conditioner comprises an axial sealing element, wherein the axial sealing element is arranged at the end part of the second end of the shell, the axial sealing element is of a ring-shaped structure, the rotor is sleeved with the axial sealing element, a movable gap is arranged between the axial sealing element and the side wall of the rotor, the air exhaust channel is arranged in the axial sealing element along the radial direction of the axial sealing element, the inner cavity of the machine body is communicated with the movable gap, and the movable gap is communicated with the air exhaust channel.
Further, the exhaust end comprises a turbine and a second volute, the second volute is covered on the outer side of the turbine, and the turbine is connected to the second end of the machine body.
Further, the second volute is provided with a containing groove, the axial sealing element is arranged in the containing groove, an exhaust hole is formed in the side wall of the second volute, the axial sealing element is clamped between the second end of the shell and the second volute, and an exhaust channel on the axial sealing element is communicated with the exhaust hole.
Further, the second end of the housing is provided with an end wall located inside the axial seal, the end wall is of a ring-shaped structure, and the inner end of the end wall is located close to the rotor.
Further, a receiving cavity is provided between the end wall and the axial seal, a flange is provided in the circumferential direction of the rotor, and the flange extends into the receiving cavity to form a stop for the clearance.
The air compressor provided by the invention comprises a pile reaction cavity and the air sealing device, wherein the air compression end is communicated with the pile reaction cavity, and the air exhaust end is communicated with the pile reaction cavity.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an air sealing device, which is characterized in that an air compression end and an air exhaust end are respectively arranged at two ends of a machine body, an air inlet channel is arranged at a first end of the machine body, and an air exhaust channel is arranged at a second end of the machine body. And the pressure of the gas cooled by the inner cavity of the machine body is not greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a positional relationship between a compression end and a machine body of an air compressor according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a positional relationship between an exhaust end of an air compressor and a machine body according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an internal structure and a gas flow direction of a gas seal device according to an embodiment of the present invention;
FIG. 4 is an enlarged view of FIG. 3 at the position of view A;
FIG. 5 is a schematic view of an axial seal provided by an embodiment of the present invention.
1-a gas compressing end in the figure; 2-a machine body; 3-an exhaust end; 4-an intake passage; 5-an exhaust passage; 6, an air seal isolation layer; 7-centrifuging the impeller; 8-a first volute; 9-a housing; 10-bearing seats; 11-a stator; 12-rotor; 13-cooling channels; 14-an axial seal; 15-a clearance gap; 16-a turbine; 17-a second volute; 18-a receiving groove; 19-exhaust holes; 20-end walls; 21-a receiving cavity; 22-flanges; 23-galvanic pile reaction chamber.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
The invention aims to provide an air sealing device and an air compressor, which solve the technical problems that in the prior art, the air compressor needs an external cooling device, the system structure is easy to be complicated, the volume is large, and water vapor is easy to enter an inner cavity of a motor.
Hereinafter, embodiments will be described with reference to the drawings. Furthermore, the embodiments shown below do not limit the summary of the invention described in the claims. The whole contents of the constitution shown in the following examples are not limited to the solution of the invention described in the claims.
The technical scheme of the invention is described in detail below with reference to specific examples.
Example 1:
referring to fig. 1-4, the air seal device provided in this embodiment includes an air compressing end 1, a machine body 2 and an air exhausting end 3, the air compressing end 1 is disposed at a first end of the machine body 2, and the first end of the machine body 2 is provided with an air intake channel 4, the air intake channel 4 is communicated with the air compressing end 1, so that the air intake channel 4 can introduce high-pressure air after the air compressing end 1 is pressurized into an inner cavity of the machine body 2. The exhaust end 3 is disposed at a second end of the body 2, and the second end of the body 2 is provided with an exhaust passage 5, so as to guide out high-pressure gas cooled in the inner cavity of the body 2 to the outside of the body 2. Wherein, the high-pressure gas of the air compressing end 1 enters the inner cavity of the machine body 2 for cooling through the air inlet channel 4, the high-pressure gas is discharged from the air outlet channel 5, and an air seal isolation layer 6 is formed at the gap of the second end of the machine body 2, namely, the high-pressure gas circularly flows in the directions of the air compressing end 1, the inner cavity of the machine body 2 and the air outlet end 3, referring to figure 3, the high-pressure gas enters from an a port and flows out from a b port, thus the invention directly introduces the high-pressure gas after the pressurization of the air compressing end 1 into the inner cavity of the machine body 2, carries out heat dissipation and cooling on the inner cavity of the machine body 2 through the gas with higher pressure and higher gas density, has excellent cooling effect, the high-pressure cooling gas self-circularly cools among the three groups of components of the air compressing end 1, the inner cavity of the machine body 2 and the air outlet end 3 without an external cooling gas source, thereby reducing the layout of an external cooling device, the complexity of the system structure is greatly reduced, the structure is simpler and more attractive, the whole volume of the air compressor is reduced and the whole quality of the air compressor is lightened under the condition that the models of the machine bodies 2 are the same, in addition, the inner cavity of the machine body 2 can have a certain high pressure after the high pressure gas enters the inner cavity of the relatively closed machine body 2, the cooled high pressure gas is converged to the exhaust channel 5 of the second end of the machine body 2 for discharging, a certain gap is inevitably reserved between the second end of the machine body 2 and the exhaust end 3 due to the movement connection, at the gap, the pressure in the machine body 2 is obviously higher than the pressure of the exhaust end 3, an air seal isolation layer can be formed by utilizing the principle of pressure difference, the moisture of the exhaust end 3 can be greatly prevented from reversely entering the inner cavity of the machine body 2, and the air seal effect is excellent, the cooling gas required by the inner cavity of the machine body 2 is high-pressure gas compressed by the air compressing end 1, the density is high, the heat exchange effect is good, therefore, the cooling of the inner cavity of the machine body 2 and the air sealing effect can be realized by only a very small amount, the required cooling gas flow is very small in proportion of the flow of the whole air compressing end 1, the pressure of the gas cooled by the inner cavity of the machine body 2 is reduced little, the gas can be recycled through the circulating guide pipe, the corresponding cooling energy consumption is small, and the technical problems that the air compressor in the prior art needs an external cooling device, the system structure is complicated, the volume is large easily caused, and water vapor easily enters the inner cavity of the motor are solved.
Example 2:
referring to fig. 1 to 4, the structure of the gas seal device is further defined in this embodiment on the basis of embodiment 1. The air compressing end 1 comprises a centrifugal impeller 7 and a first volute 8, and the first volute 8 is covered on the outer side of the centrifugal impeller 7 so as to guide air flow. At the peripheral edge position of centrifugal impeller 7, the terminal surface setting of the first end of organism 2 is pressed close to the lateral wall of first spiral case 8 to form the diffusion section, the diffusion section encloses to establish in centrifugal impeller 7's outside circumference, and inlet channel 4 is located the position department of diffusion section, so sets up, and after centrifugal impeller 7 high-speed rotation was compressed to external gas, can be through the narrow flat clearance of diffusion section with the kinetic energy of air current change into pressure energy, and in the inner chamber that conveys organism 2 through inlet channel 4, can reduce centrifugal impeller 7 department's energy loss.
As an alternative implementation manner of the embodiment of the invention, the machine body 2 comprises a housing 9 and a bearing seat 10, the bearing seat 10 is arranged at the first end of the housing 9, the first end of the housing 9 is the end close to the air compressing end 1, the air inlet channel 4 is arranged on the bearing seat 10, so that the bearing seat 10 is fixedly connected with the first end of the housing 9, a bearing can be arranged on the inner side of the bearing seat 10 to rotatably support the rotor 12, the air inlet channel 4 is directly arranged on the bearing seat 10, the additional arrangement of other components can be reduced, and the whole volume and weight of the machine body 2 are reduced.
Further, the machine body 2 further comprises a stator 11 and a rotor 12, the rotor 12 is rotationally connected with the housing 9, the rotor 12 is coaxially arranged with the air compressing end 1 and the air exhausting end 3, namely, two ends of the rotor 12 can extend out of the housing 9, a first end of the rotor 12 can be connected with the centrifugal impeller 7, a second end of the rotor 12 can be connected with the turbine 16, the rotor 12 can coaxially and synchronously rotate with the centrifugal impeller 7 and the turbine 16, the power transmission structure of the air compressor is simplified, the stability of mechanical motion transmission can be greatly enhanced, and the operation efficiency of the air compressor can be improved. The stator 11 is sleeved on the outer circumference of the rotor 12, the stator 11 is connected with the shell 9, a gap is formed between the stator 11 and the rotor 12, so that a cooling channel 13 is formed, high-pressure gas can flow smoothly between the rotor 12 and the stator 11 through the flow guiding function of the cooling channel 13 after entering the inner cavity of the shell 9 from the air inlet channel 4, the stator 11 and the rotor 12 are cooled more efficiently, and the cooling effect of the stator 11 and the rotor 12 is improved.
Further, referring to fig. 3-5, the air seal device further includes an axial seal 14, the axial seal 14 is disposed at an end of the second end of the housing 9, the axial seal 14 is in a ring structure, the axial seal 14 is sleeved on the rotor 12, and a movable gap 15 is disposed between the axial seal 14 and a side wall of the rotor 12, so as to facilitate separation of the axial seal 14 from the rotor 12, avoid contact between the axial seal 14 and the rotor 12, and increase rotational damping of the rotor 12, thereby enabling rotation of the rotor 12 to be smoother. The exhaust passage 5 is radially arranged in the axial sealing member 14 along the axial sealing member 14, the inner cavity of the machine body 2 is communicated with the movable gap 15, the movable gap 15 is communicated with the exhaust passage 5, namely, the air inlet end of the exhaust passage 5 is communicated with the movable gap 15 and then is communicated with the inner cavity of the machine body 2, and the air outlet end of the exhaust passage 5 can be communicated to the outside or can also be communicated with the edge of the air outlet end 3, so that high-pressure air in the inner cavity of the shell 9 can be smoothly discharged. The high-pressure gas in the inner cavity of the shell 9 has higher pressure and a certain temperature, the high-pressure gas is discharged after sequentially passing through the movable gap 15 and the exhaust channel 5, and the high-pressure gas can form a high-pressure gas seal layer at the movable gap 15, so that the exhaust gas of the exhaust end 3 and water vapor or liquid water drops can not enter the inner cavity of the machine body 2, namely, the self-circulating high-pressure gas is used for establishing the gas seal isolation layer 6, so that the water vapor is prevented from entering the inner cavity of the machine body 2, and the sealing problem of the inner cavity of the machine body 2 of the air compressor is solved.
Further, the exhaust end 3 includes a turbine 16 and a second volute 17, the second volute 17 is covered on the outer side of the turbine 16, the turbine 16 is connected to the second end of the machine body 2, so that the turbine 16 can rotate in the second volute 17 at a high speed, and the gas in the second volute 17 is pressurized and discharged to the outside, so that the gas after reaction can be discharged smoothly.
Further, the second volute 17 is provided with a containing groove 18, the axial sealing member 14 is arranged in the containing groove 18, the side wall of the second volute 17 is provided with an exhaust hole 19, the axial sealing member 14 is clamped between the second end of the housing 9 and the second volute 17, and the exhaust channel 5 on the axial sealing member 14 is communicated with the exhaust hole 19, so that high-pressure gas in the exhaust channel 5 can be smoothly discharged to the outside, the second volute 17 can be covered on the outer side of the axial sealing member 14, the axial sealing member 14 can play a protective role in covering, and the axial sealing member 14 is positioned in the containing groove 18 and is clamped and fixed with the second volute 17 through the housing 9, so that the fixing is firmer and the stability is better.
As an alternative implementation manner of the embodiment of the present invention, the second end of the housing 9 is provided with the end wall 20, the end wall 20 is located at the inner side of the axial seal 14, the end wall 20 is in a ring structure, the inner end of the end wall 20 is located near the rotor 12, so that the end wall 20 and the bearing seat 10 can be respectively enclosed at two ends of the housing 9, so that the end wall 20, the bearing seat 10 and the housing 9 can be enclosed together to form a relatively closed cavity, the rotor 12 and the stator 11 are located in the relatively closed cavity, the high-pressure gas can sufficiently cool the stator 11 and the rotor 12, the pressure loss of the high-pressure gas can be reduced, and the end wall 20 can shield and protect the stator 11 and the rotor 12, thereby reducing damage of foreign matters.
Further, a containing cavity 21 is arranged between the end wall 20 and the axial sealing element 14, a flange 22 is arranged in the circumference of the rotor 12, the flange 22 stretches into the containing cavity 21 to form a blocking effect on the movable gap 15, so that the flange 22 can play a certain limiting and fixing role on the rotor 12, the flange 22 can shield and protect the gap between the end wall 20 and the rotor 12 and the movable gap 15 between the axial sealing element 14 and the rotor 12 in the axial direction, labyrinth shielding is formed, external dust or sundries can be reduced to directly enter the inner cavity of the shell 9, damage is caused to the stator 11 and the rotor 12, the flange 22 can guide high-pressure gas, the high-pressure gas can be filled in the containing cavity 21 between the end wall 20 and the axial sealing element 14, so that the pressure loss of the high-pressure gas can be reduced, the movable gap 15 between the axial sealing element 14 and the rotor 12 can keep a sufficient pressure value, and the gas sealing effect of the gas sealing isolation layer 6 is improved.
As an alternative implementation of the embodiment of the present invention, the present invention further comprises a reactor reaction chamber 23, the gas compressing end 1 is communicated with the reactor reaction chamber 23, and the gas exhausting end 3 is communicated with the reactor reaction chamber 23, so that the first volute 8 of the gas compressing end 1 can supply high-pressure gas into the reactor reaction chamber 23,
example 3:
referring to fig. 1-5, the air compressor provided in this embodiment includes a pile reaction chamber 23 and the air sealing device, where the air compressing end 1 is connected with the pile reaction chamber 23, and the air exhausting end 3 is connected with the pile reaction chamber 23, so that the inner cavity of the machine body 2 can be a relatively closed space, after the air compressing end 1 compresses the air in one stage, the air with high pressure and high density is sent into the pile reaction chamber 23 through the air inlet channel 4 to participate in chemical reaction, so as to consume oxygen in the air, then the waste gas after the chemical reaction in the pile reaction chamber 23 is separated and dehydrated by the system, and the waste gas with great kinetic energy and internal energy is sent to the air exhausting end 3, and blows the turbine 16 of the air exhausting end 3 to rotate for exhausting. The air compressing end 1 is used for introducing high-pressure and high-density gas into the inner cavity of the machine body 2 through the air inlet channel 4, so that the heat dissipation and cooling requirements of the inner cavity of the machine body 2 can be met, an air sealing effect of the air sealing isolation layer 6 can be formed at the junction of the second end of the inner cavity of the machine body 2 and the moisture of the exhaust end 3, the pressure of the high-pressure gas in the inner cavity of the machine body 2 is higher than that of the moisture of the exhaust end 3, and therefore the moisture of the exhaust end 3 can be blocked, and the moisture is prevented from entering the inner cavity of the machine body 2.
In the description of the present invention, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like 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 should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The air sealing device is characterized by comprising an air compressing end (1), a machine body (2) and an exhaust end (3), wherein the air compressing end (1) is arranged at the first end of the machine body (2), an air inlet channel (4) is arranged at the first end of the machine body (2), the air inlet channel (4) is communicated with the air compressing end (1), the exhaust end (3) is arranged at the second end of the machine body (2), and an exhaust channel (5) is arranged at the second end of the machine body (2), wherein high-pressure air of the air compressing end (1) enters an inner cavity of the machine body (2) through the air inlet channel (4) to be cooled, and the high-pressure air is discharged from the exhaust channel (5) and forms an air sealing isolation layer (6) at a gap of the second end of the machine body (2). The engine body (2) comprises a shell (9) and a bearing seat (10), the bearing seat (10) is arranged at the first end of the shell (9), the first end of the shell (9) is the end close to the air compressing end (1), and the air inlet channel (4) is arranged on the bearing seat (10); the machine body (2) further comprises a stator (11) and a rotor (12), the rotor (12) is rotationally connected with the shell (9), the rotor (12) is coaxially arranged with the air compressing end (1) and the air exhausting end (3), the stator (11) is sleeved on the outer circumference of the rotor (12), the stator (11) is connected with the shell (9), and a gap is formed between the stator (11) and the rotor (12) to form a cooling channel (13); the novel air conditioner is characterized by further comprising an axial sealing element (14), wherein the axial sealing element (14) is arranged at the end part of the second end of the housing (9), the axial sealing element (14) is of a ring-shaped structure, the rotor (12) is sleeved with the axial sealing element (14), a movable gap (15) is arranged between the axial sealing element (14) and the side wall of the rotor (12), the air exhaust channel (5) is arranged in the axial sealing element (14) along the radial direction of the axial sealing element (14), the inner cavity of the machine body (2) is communicated with the movable gap (15), and the movable gap (15) is communicated with the air exhaust channel (5).
2. The gas seal device according to claim 1, characterized in that the gas-compressing end (1) comprises a centrifugal impeller (7) and a first volute (8), the first volute (8) is covered on the outer side of the centrifugal impeller (7), the side wall of the first volute (8) is arranged close to the end face of the first end of the machine body (2) at the circumferential edge position of the centrifugal impeller (7) to form a diffusion section, and the gas inlet channel (4) is arranged at the position of the diffusion section.
3. The gas seal device according to claim 1, characterized in that the exhaust end (3) comprises a turbine (16) and a second volute (17), the second volute (17) being covered outside the turbine (16), the turbine (16) being connected to the second end of the machine body (2).
4. A gas seal arrangement according to claim 3, characterized in that the second volute (17) is provided with a receiving groove (18), the axial seal (14) is arranged in the receiving groove (18), the side wall of the second volute (17) is provided with a vent hole (19), the axial seal (14) is clamped between the second end of the housing (9) and the second volute (17), and the vent channel (5) on the axial seal (14) is in communication with the vent hole (19).
5. A gas seal arrangement according to claim 1, characterized in that the second end of the housing (9) is provided with an end wall (20), the end wall (20) being located inside the axial seal (14), the end wall (20) being of annular construction, the inner end of the end wall (20) being arranged close to the rotor (12).
6. Gas seal arrangement according to claim 5, characterized in that a receiving cavity (21) is provided between the end wall (20) and the axial seal (14), a flange (22) being provided in the circumferential direction of the rotor (12), the flange (22) extending into the receiving cavity (21) to form a stop for the running clearance (15).
7. An air compressor, characterized by comprising a reactor chamber (23) and a gas seal device according to any one of claims 1-6, said gas-compressing end (1) being in communication with said reactor chamber (23) and said gas-exhausting end (3) being in communication with said reactor chamber (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211191764.4A CN115479035B (en) | 2022-09-28 | 2022-09-28 | Air sealing device and air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211191764.4A CN115479035B (en) | 2022-09-28 | 2022-09-28 | Air sealing device and air compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115479035A CN115479035A (en) | 2022-12-16 |
| CN115479035B true CN115479035B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211191764.4A Active CN115479035B (en) | 2022-09-28 | 2022-09-28 | Air sealing device and air compressor |
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| CN (1) | CN115479035B (en) |
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| CN113339285A (en) * | 2021-07-15 | 2021-09-03 | 上海优社动力科技有限公司 | Fuel cell centrifugal air compressor and fuel cell system |
| CN214661083U (en) * | 2020-12-30 | 2021-11-09 | 河北金士顿科技有限责任公司 | Novel air compressor machine air cooling system's inside bleed structure |
| WO2022166546A1 (en) * | 2021-02-05 | 2022-08-11 | 海南极锐浩瀚动力系统科技有限公司 | High-speed air suspension compressor for fuel cell, fuel cell system and vehicle |
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2022
- 2022-09-28 CN CN202211191764.4A patent/CN115479035B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201330724Y (en) * | 2009-01-13 | 2009-10-21 | 珠海格力电器股份有限公司 | Shaft sealing structure for centrifugal compressor |
| CN104847689A (en) * | 2015-05-04 | 2015-08-19 | 亿昇(天津)科技有限公司 | Active centrifugal blower sealing structure |
| CN108050085A (en) * | 2017-11-28 | 2018-05-18 | 湖南大学 | A kind of cooling system of air foil bearing supporting air compressor machine |
| CN214661083U (en) * | 2020-12-30 | 2021-11-09 | 河北金士顿科技有限责任公司 | Novel air compressor machine air cooling system's inside bleed structure |
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| WO2022166546A1 (en) * | 2021-02-05 | 2022-08-11 | 海南极锐浩瀚动力系统科技有限公司 | High-speed air suspension compressor for fuel cell, fuel cell system and vehicle |
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| Publication number | Publication date |
|---|---|
| CN115479035A (en) | 2022-12-16 |
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