CN113757134B - Centrifugal vapor compressor with double impellers arranged in back-to-back manner - Google Patents
Centrifugal vapor compressor with double impellers arranged in back-to-back manner Download PDFInfo
- Publication number
- CN113757134B CN113757134B CN202110856073.0A CN202110856073A CN113757134B CN 113757134 B CN113757134 B CN 113757134B CN 202110856073 A CN202110856073 A CN 202110856073A CN 113757134 B CN113757134 B CN 113757134B
- Authority
- CN
- China
- Prior art keywords
- sealing
- centrifugal
- driving shaft
- assembly
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 110
- 230000006835 compression Effects 0.000 claims abstract description 40
- 238000007906 compression Methods 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims description 33
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000011010 flushing procedure Methods 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000009792 diffusion process Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 11
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
- F04D29/285—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together
-
- 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
-
- 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
- F04D29/662—Balancing of rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a centrifugal steam compressor with double impellers arranged in a back-to-back way, which solves the problems of poor sealing effect and the like of a steam compressor, and comprises a volute with a compression cavity, wherein the volute is provided with an air inlet channel and an air outlet channel which are communicated with the internal compression cavity, an impeller assembly is arranged in the volute, the impeller assembly is provided with a driving shaft which is rotationally connected in the compression cavity, two centrifugal impellers which are arranged in a back-to-back way and are mutually abutted against the compression cavity are fixed on the driving shaft, the bending directions of blades of the centrifugal impellers are opposite, and the centrifugal impellers are respectively provided with an air inlet branch pipe which is communicated with the air inlet channel. The invention has the advantages of good sealing effect, stable structure and the like.
Description
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to a centrifugal steam compressor with double impellers arranged in a back-to-back mode.
Background
Along with the requirements of upgrading and adjusting national economy industrial structures, energy conservation and emission reduction, the heat utilization in the production process in various industrial enterprises is urgently required to be better. Particularly, the problems encountered in low-pressure steam recovery and pipeline steam end steam pressure lifting in the industries of papermaking, printing and dyeing, spinning, chemical industry and the like are urgently needed to be solved by equipment with strong adaptability, high efficiency, stability and reliability. In particular, there are various forms of waste heat and waste heat in the paper, printing and dyeing, textile, chemical, petroleum and other industries, which are mostly present in the form of low pressure steam or high temperature hot water that can produce low pressure steam. In many cases, this heat energy is not fully utilized and is directly discharged to the environment, resulting in serious waste. In view of the current situation, an effective technical means is to use a vapor compressor to consume a small amount of electric energy to convert a large amount of low-grade waste heat into a high-grade heat source for production. The method ensures that a large amount of waste heat which is originally discharged to the environment is reused in the production process, and greatly reduces the consumption of original energy sources by various production enterprises. And a vapor compressor suitable for the above application becomes a technical key thereof. In the existing vapor compression technology, the centrifugal vapor compressor has the characteristics of simple structure, low manufacturing cost, small occupied area, high rotating speed and high efficiency, and low use and maintenance cost. However, due to the limitation of the structure, a single centrifugal steam compressor has larger axial force during operation, and the installation mode is mainly cantilever type, and a heavier impeller in a rotor is positioned at the shaft end, so that unstable rotor dynamics is easy to generate. These problems limit the rotational speed and size of the centrifugal vapor compressor, thereby making it difficult to achieve higher power and higher efficiency. In addition, each impeller needs a plurality of sealing mechanisms to seal respectively, so that the overall tightness of the compressor is reduced, and the compression effect is affected.
In order to solve the defects existing in the prior art, long-term exploration is performed, and various solutions are proposed. For example, chinese patent literature discloses an impeller locking structure and a centrifugal compressor [201922292679.7], which includes a rotating shaft and two impellers disposed at two ends of the rotating shaft, each impeller is locked on the rotating shaft by a locking nut, and threads of the two locking nuts are opposite in rotation direction. The impeller locking structure and the centrifugal compressor are characterized in that the screw threads of the two locking nuts are oppositely rotated, so that the locking direction is the same as the rotating direction of the rotating shaft after the impeller is locked, and the end part of the rotating shaft is provided with an auxiliary nut for supporting or setting a rotation stopping structure to limit the rotating shaft to rotate.
The above solution solves the problem of unstable rotor of centrifugal compressor to a certain extent, but the solution still has a number of disadvantages, such as poor sealing performance.
Disclosure of Invention
The invention aims to solve the problems and provide the centrifugal steam compressor with the double impellers arranged opposite to each other, which is reasonable in design and good in sealing effect.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the centrifugal vapor compressor with the double impellers arranged in the opposite mode comprises a volute with a compression cavity, wherein the volute is provided with an air inlet channel and an air outlet channel which are communicated with the internal compression cavity, an impeller assembly is arranged in the volute, the impeller assembly is provided with a driving shaft which is rotationally connected in the compression cavity, two centrifugal impellers which are arranged in the opposite mode and mutually propped against the compression cavity are fixed on the driving shaft, the blades of the centrifugal impellers are opposite in bending direction, and the centrifugal impellers are respectively provided with air inlet branch pipes communicated with the air inlet channel. The centrifugal impeller in the volute rotates, the centrifugal impeller respectively applies axial force to the driving shaft, the driving shaft and the centrifugal impeller are kept in rotation balance, and the centrifugal impeller is propped against the centrifugal impeller, so that the back of the centrifugal impeller does not need a sealing structure, and only a conventional sealing structure is needed at an exhaust passage, thereby reducing the sealing difficulty and improving the sealing effect of the volute.
In the centrifugal vapor compressor with the double impellers arranged back to back, the volute comprises the main casing and the auxiliary casing which are connected with each other through the sealing mechanism, the periphery of the main casing is provided with the diversion channel in a surrounding mode, the diffusion component is arranged between the diversion channel and the compression cavity, and the inner walls of the main casing and the auxiliary casing are distributed with the pressurizing cavities opposite to the centrifugal impellers. The main shell and the auxiliary shell can be mutually separated, and the driving shaft and the centrifugal impeller are convenient to install.
In the centrifugal steam compressor with the double impellers arranged in a back-to-back way, the main shell is provided with the opposite sealing opening of the auxiliary shell, the auxiliary shell is provided with the sealing cylinder inserted in the sealing opening, the sealing mechanism comprises sealing rings which are distributed on the inner side of the sealing opening in a surrounding way and are attached to the sealing cylinder, one surface of each sealing ring opposite to the sealing cylinder is provided with a sealing groove, the sealing grooves and the sealing strips are arranged in a slope way in the axial direction of the main shell and the auxiliary shell opposite to each other, the junction of the main shell and the auxiliary shell is provided with a sealing seat which is opposite to each other and is in threaded connection with the sealing grooves and the sealing strips, the inner wall of the flow guide channel is arc-shaped, the sectional area of the flow guide channel is gradually increased from one side far away from the exhaust channel to one side close to the exhaust channel, the diffusion blades distributed on the edge opening of the centrifugal impeller are arranged between the flow guide channel and the compression chamber, and the expansion ring is opposite to the blades of the centrifugal impeller. The sealing mechanism plays a good sealing and locking role on the joint of the main shell and the auxiliary shell, wherein the diffusion assembly effectively increases the steam pressure and ensures the steam flow rate.
In the centrifugal steam compressor with the double impellers arranged back to back, a one-way flow guide component is arranged in the air inlet branch pipe, and a filtering component is arranged at the junction of the air inlet branch pipe and the air inlet channel. The unidirectional flow guide assembly guides the steam to flow unidirectionally, and plays a certain role in accelerating the steam entering the air inlet branch pipe.
In the centrifugal steam compressor with the double impellers arranged back to back, the unidirectional flow guide assembly comprises a plurality of flow guide blocks which are distributed along the extending direction of the air inlet branch pipe pipeline, flow guide holes for steam to flow are formed in the centers of the flow guide blocks, at least one backflow channel is arranged in the flow guide blocks, two ends of the backflow channel are respectively communicated with the flow guide holes, the whole backflow channel inclines towards the inlet ends of the flow guide holes on the flow guide blocks, the filtering assembly comprises a filter cylinder inserted by the inlet ends of the air inlet channels, a detachable filter core is installed in the filter cylinder, one end, opposite to the air inlet branch pipe, of the filter cylinder is provided with a cleaning assembly with the outer wall of the filter cylinder, one end, opposite to the air inlet channel, of the filter cylinder is provided with a condensing assembly, the condensing assembly is communicated with the cleaning assembly, a switching valve is arranged between the condensing assembly and the inlet of the filter cylinder, the filter core comprises supporting plates which are made of stainless steel materials and spirally coiled, a plurality of supporting rods are connected between the supporting plates, a porous filtering body is filled between the supporting plates, the centers of the filter core are rotatably connected with an opening and closing rod, two ends of the opening and closing plates which are respectively arranged between the two ends of the opening and closing plates are mutually attached, and are alternately opened along with the opening and closing openings. The filtering component filters the steam, prevents impurities from entering the compression cavity, and influences normal compression work.
In the centrifugal vapor compressor with the double impellers arranged back to back, the cleaning component comprises a backflushing head fixed at the end head of the filter cylinder, a backflushing cavity with the opposite filter core is arranged in the backflushing head, one side of the backflushing head is communicated with the condensing component through a backflushing pipeline attached to the filter cylinder, the condensing component comprises a condensing shell arranged on the outer side of the filter cylinder in a surrounding manner, a condensing cavity is arranged between the condensing shell and the filter cylinder, a plurality of condensing sheets are distributed on the inner side and the outer side of the condensing shell, one end of the condensing cavity is communicated with the backflushing pipeline, and the other end of the condensing cavity is communicated with the switching valve. The cleaning component is matched with the condensing component, and the condensed water is utilized to back flush the internal filter element, so that the maintenance frequency of the compressor is reduced, and the filtering effect of the filtering component is ensured.
In the centrifugal steam compressor with the double impellers arranged back to back, a gap is reserved between the centrifugal impellers, the centrifugal impellers are connected with the driving shaft through the limiting sliding assembly, an elastic resetting assembly is arranged between one side, opposite to the wheel disc, of the centrifugal impellers and the driving shaft, the limiting sliding assembly comprises a limiting pin arranged on the driving shaft, a limiting groove spliced with the limiting pin is formed in the central hole of the centrifugal impellers, a limiting cylinder propped against the centrifugal impellers is sleeved on the driving shaft, the limiting cylinder is relatively fixed with the driving shaft through a bolt, the elastic resetting assembly comprises a resetting seat arranged in the middle of the driving shaft, the resetting seat is connected with a resetting head which can stretch relative to the resetting seat through an elastic element, and the resetting head is propped against the wheel disc of the centrifugal impellers. Under the action of the limiting sliding component and the elastic resetting component, after compression is stopped, the centrifugal impeller can be relatively far away from the centrifugal impeller to stably reduce the flow of the exhaust channel.
In the centrifugal vapor compressor with the double impellers arranged back to back, pressure relief openings opposite to the impeller assemblies are respectively formed in two sides of the volute, a pressure sensor is arranged at one end, opposite to the compression cavity, of each pressure relief opening, the outer sides of the pressure relief openings are communicated with the exhaust passage through pressure relief pipes, a first pressure relief valve is arranged in each pressure relief pipe, and a second pressure relief valve is arranged at the joint of each exhaust passage and each pressure relief pipe. The pressure release valve can realize the sectional pressure release of the compression cavity, and is applicable to different pressure release demands.
In the centrifugal vapor compressor with the double impellers arranged back to back, two ends of a driving shaft respectively extend to the outside of a volute, a sealing groove is formed in the outer side of a joint of the volute and the driving shaft, a roller bearing connected with the driving shaft is arranged in the sealing groove, a sealing cover plate which is fixedly connected with the driving shaft and covers the inner side of the sealing groove is arranged on the inner side of the volute, a plurality of rotating grooves opposite to the driving shaft are formed in rotating holes on two sides of the volute, one ends of the rotating grooves opposite to the sealing groove are sealed by fixing rings, rubber rings which are jointed and extruded with the rotating grooves and the fixing rings are arranged in the rotating grooves, gaps are reserved between the rubber rings and the driving shaft, sealing bulges protruding towards the driving shaft and contacting with the rotating grooves are formed in the rubber rings, a first transmission gear is fixed at one end of the driving shaft, a second transmission gear meshed with the first transmission gear is rotatably connected to the outer side of the volute, and the first transmission gear and the second transmission gear are sealed in a transmission box outside the volute, and a transmission shaft extending to the outer side of the transmission box is arranged on the second transmission gear. The driving shaft and the volute are provided with corresponding sealing structures at the rotating connection positions, so that steam leakage is prevented, and meanwhile, normal rotation of the driving shaft is not influenced.
In the centrifugal vapor compressor with the double impellers arranged back to back, the reinforcing plates distributed along the extending directions of the air inlet channel and the air outlet channel are connected between the outer side of the volute and the air inlet channel and the air outlet channel, the reinforcing ribs symmetrically distributed relative to the central axis of the driving shaft are arranged on two sides of the volute, the air inlet channel and the air outlet channel are attached to the outer side of the volute, the mounting seat is arranged below the volute, the mounting seat is connected with the volute through a plurality of back-off buckles and buckling grooves which are mutually buckled, and a plurality of elastic elements are clamped between the mounting seat and the volute. The spiral case is from taking damping system, and the structural stability when compressor work is guaranteed to the additional strengthening of cooperation outside.
Compared with the prior art, the invention has the advantages that: the centrifugal impeller is arranged in the compression cavity in an abutting mode, and a sealing structure is not required to be added to the back of the centrifugal impeller, so that the overall tightness of the compressor is improved; the centrifugal impeller is coaxially arranged on the driving shaft, and axial forces generated during rotation of the centrifugal impeller are mutually offset, so that the driving shaft and the centrifugal impeller have good rotation stability; the double centrifugal impellers rotate synchronously, so that the flow and the compression efficiency of the steam compressor are improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of another view of the present invention;
FIG. 3 is a schematic diagram of the structure of the present invention;
FIG. 4 is a cross-sectional view of the structure of the present invention;
FIG. 5 is a partial cross-sectional view of the present invention;
FIG. 6 is another partial cross-sectional view of the present invention;
FIG. 7 is a schematic diagram of the assembly of the filter assembly and condensing assembly of the present invention;
FIG. 8 is a partial cross-sectional view of a one-way baffle assembly of the present invention;
FIG. 9 is a block diagram of the structure of the pressure relief tube of the present invention;
in the drawing the view of the figure, volute 1, compression chamber 11, relief port 111, relief pipe 112, first relief valve 113, second relief valve 114, intake passage 12, exhaust passage 13, intake branch pipe 14, main casing 15, sub-casing 16, flow guide passage 17, booster chamber 18, reinforcing plate 19, reinforcing rib 191, mount 192, reverse buckle 193, buckle groove 194, impeller assembly 2, drive shaft 21, seal groove 211, roller bearing 212, seal cover 213, rotation groove 214, retainer ring 215, rubber ring 216, seal boss 217, centrifugal impeller 22, first transmission gear 221, second transmission gear 222, transmission case 223, transmission shaft 224, seal mechanism 3, seal port 31, seal cylinder 32 seal ring 33, seal groove 34, seal strip 35, seal seat 36, diffuser assembly 4, diffuser blade 41, diffuser ring 42, unidirectional flow guide assembly 5, flow guide block 51, flow guide hole 52, return passage 53, filter assembly 6, filter cartridge 61, filter cartridge 62, switching valve 63, support piece 64, support rod 65, filter body 66, opening and closing rod 67, opening and closing plate 68, opening and closing opening 69, cleaning assembly 7, backflushing head 71, backflushing chamber 72, backflushing pipeline 73, condensing assembly 8, condensing housing 81, condensing chamber 82, condensing sheet 83, limit sliding assembly 9, elastic reset assembly 91, limit pin 92, limit groove 93, limit cylinder 94, reset seat 95, reset head 96.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1-9, the centrifugal steam compressor with double impellers arranged back to back comprises a volute 1 with a compression cavity 11, wherein the volute 1 is provided with an air inlet channel 12 and an air outlet channel 13 which are communicated with the internal compression cavity 11, an impeller assembly 2 is arranged in the volute 1, the impeller assembly 2 is provided with a driving shaft 21 rotatably connected in the compression cavity 11, two centrifugal impellers 22 which are arranged back to back and are mutually abutted against the compression cavity 11 are fixed on the driving shaft 21, the blades of the centrifugal impellers 22 are bent in opposite directions, and the centrifugal impellers 22 are respectively provided with an air inlet branch pipe 14 communicated with the air inlet channel 12. The steam is distributed to each air inlet branch pipe 14 through the air inlet channel 12, and then is led into the compression cavity 11 of the volute 1, the external driving mechanism drives the driving shaft 21 to rotate, the centrifugal impellers 22 on two sides of the middle part of the driving shaft 21 synchronously rotate, the steam input by the air inlet branch pipes 14 is pressurized, and the obtained high-pressure high-temperature steam is led out through the air outlet channel 13 for industrial recycling. The symmetrical centrifugal impellers 22 are arranged in the same compression cavity 11, and the integral sealing of the compressor can be completed only by arranging sealing structures at the rotating connection position of the volute 1 and the driving shaft 21 and at the exhaust passage 13.
Specifically, the spiral case 1 includes a main casing 15 and an auxiliary casing 16 that are connected to each other through a sealing mechanism 3, a diversion channel 17 is circumferentially disposed around the main casing 15, a diffusion assembly 4 is disposed between the diversion channel 17 and the compression chamber 11, and a pressurizing chamber 18 opposite to the centrifugal impeller 22 is distributed on inner walls of the main casing 15 and the auxiliary casing 16. The main casing 15 and the auxiliary casing 16 are detachable, the impeller assembly 2 is inserted into the volute casing 1 after being assembled during installation, and then the sealing mechanism 3 seals the main casing 15 and the auxiliary casing 16, and the relatively independent pressurizing cavities 18 respectively pressurize the steam compressed by the centrifugal impeller 22.
In depth, the main casing 15 is provided with a sealing opening 31 opposite to the auxiliary casing 16, the auxiliary casing 16 is provided with a sealing cylinder 32 inserted in the sealing opening 31, the sealing mechanism 3 comprises a sealing ring 33 which is distributed around the inner side of the sealing opening 31 and is attached to the sealing cylinder 32, one surface of the sealing ring 33 opposite to the sealing cylinder 32 is provided with a sealing groove 34, the sealing cylinder 32 is provided with a sealing strip 35 inserted in the sealing groove 34, the sealing groove 34 and the sealing strip 35 are arranged in a tilting mode relative to the axial direction of the main casing 15 and the auxiliary casing 16, the junction between the main casing 15 and the outer part of the auxiliary casing 16 is provided with a sealing seat 36 which is opposite to the sealing groove 34 and the sealing strip 35 in a threaded mode, the sealing seat 36 is arranged in a tilting mode relative to the axial direction of the main casing 15 and the auxiliary casing 16, the inner wall of the flow guide channel 17 is arc-shaped, the sectional area of the flow guide channel 17 is gradually increased from one side far away from the exhaust channel 13 to one side close to the exhaust channel 13, the diffusion assembly 4 comprises blades 41 distributed at the edge of the centrifugal impeller 22, a diffusion ring 42 is arranged between the flow guide channel 17 and the compression chamber 11, the diffusion ring 42 is opposite to the diffusion blades 41 of the centrifugal impeller 22. The sealing port 31 and the sealing cylinder 32 are mutually inserted, the sealing groove 34 and the sealing strip 35 between the sealing port and the sealing cylinder are inclined and opposite to the direction of internal steam vortex, the inclined direction of the sealing seat 36 is opposite to the direction of the sealing groove 34 and the sealing strip 35, and the formed crossed structure is matched with a screw thread piece to realize fixed locking, so that internal steam is not easy to leak.
Further, a unidirectional flow guide assembly 5 is arranged in the air inlet branch pipe 14, and a filtering assembly 6 is arranged at the junction of the air inlet branch pipe 14 and the air inlet channel 12. The unidirectional flow guide assembly 5 generates pressure by utilizing the flow velocity difference of the fluid in the return channel 53 and the flow guide hole 52, so that the acceleration effect is achieved on the steam entering the flow guide blocks 51, and meanwhile, when the steam flows reversely, the flow guide blocks 51 are matched to gradually reduce the flow driving force of the steam, so that the steam is prevented from flowing back into the air inlet channel 12.
Still further, the unidirectional flow guiding assembly 5 includes a plurality of flow guiding blocks 51 arranged along the extending direction of the pipeline of the air inlet branch pipe 14, the center of the flow guiding block 51 is provided with a flow guiding hole 52 for steam to flow, at least one backflow channel 53 is arranged in the flow guiding block 51, two ends of the backflow channel 53 are respectively communicated with the flow guiding hole 52, the backflow channel 53 is inclined towards the inlet end of the flow guiding hole 52 on the flow guiding block 51 as a whole, the filtering assembly 6 includes a filter cylinder 61 inserted from the inlet end of the air inlet channel 12, a detachable filter core 62 is installed in the filter cylinder 61, one end of the filter cylinder 61 opposite to the air inlet branch pipe 14 is provided with a cleaning assembly 7 on the outer wall of the filter cylinder 61, one end of the filter cylinder 61 opposite to the air inlet channel 12 is provided with a condensing assembly 8, the condensing assembly 8 is communicated with the cleaning assembly 7, a switching valve 63 is arranged between the condensing assembly 8 and the inlet of the filter cylinder 61, the filter core 62 includes a supporting piece 64 made of stainless steel material and spirally coiled, a plurality of supporting rods 65 are connected between the supporting pieces 64, a porous filtering body 66 is filled between the supporting pieces 64, the center of the filter core 62 is rotatably connected with an opening and closing rod 67, two ends of the opening and closing plates 68 are respectively arranged between the two ends of the opening and closing rod 67 and the two ends of the filter core are respectively provided with mutually-fitted opening and closing plates 68. The porous material of the filter element 66 of the filter element 6 is sintered with powdered polytetrafluoroethylene to filter out residual solid impurities from the vapor, and the spiral support sheet 64 extends the vapor flow path to uniformly pass through the various portions of the filter element 62. The on-off of the filter cylinder 61 can be realized by rotating the opening and closing rod 67, so that the air inlet branch pipe 14 is conveniently cut off when the cleaning component 7 is used for cleaning, the on-off of the condensing component 8 and the filter cylinder 61 is realized by the switching valve 63, and the back flushing of condensed water is realized.
In addition, the cleaning assembly 7 comprises a back flushing head 71 fixed at the end of the filter cartridge 61, a back flushing cavity 72 opposite to the filter core 62 is arranged in the back flushing head 71, one side of the back flushing head 71 is communicated with the condensing assembly 8 through a back flushing pipeline 73 attached to the filter cartridge 61, the condensing assembly 8 comprises a condensing shell 81 arranged around the outer side of the filter cartridge 61, a condensing cavity 82 is arranged between the condensing shell 81 and the filter cartridge 61, a plurality of condensing sheets 83 are distributed on the inner side and the outer side of the condensing shell 81, one end of the condensing cavity 82 is communicated with the back flushing pipeline 73, and the other end of the condensing cavity 82 is communicated with the switching valve 63. The condensing sheet 83 continuously exchanges heat between the inside and the outside of the condensing housing 81 for vapor condensation, the condensed water is introduced into the backflush chamber 72 of the backflush head 71 through the backflush pipeline 73, and the water flows from the outlet of the filter element 62 toward the inlet and is discharged, so that the impurities blocked inside are led out.
Meanwhile, a gap is reserved between the centrifugal impellers 22, the centrifugal impellers 22 are connected with the driving shaft 21 through a limiting sliding assembly 9, an elastic resetting assembly 91 is arranged between one side, opposite to the wheel disc, of the centrifugal impellers 22 and the driving shaft 21, the limiting sliding assembly 9 comprises a limiting pin 92 arranged on the driving shaft 21, a limiting groove 93 spliced with the limiting pin 92 is formed in the central hole of the centrifugal impellers 22, a limiting cylinder 94 abutted to the centrifugal impellers 22 is sleeved on the driving shaft 21, the limiting cylinder 94 is relatively fixed with the driving shaft 21 through a bolt, the elastic resetting assembly 91 comprises a resetting seat 95 arranged in the middle of the driving shaft 21, the resetting seat 95 is connected with a resetting head 96 which can stretch relative to the resetting seat through an elastic element, and the resetting head 96 abuts against the wheel disc of the centrifugal impellers 22. When the driving shaft 21 rotates, the centrifugal impellers 22 are mutually close to each other under the action of axial force, so that the centrifugal impellers 22 keep integral fit, when the driving shaft 21 stops rotating, the rotation speed of the centrifugal impellers 22 is reduced and the centrifugal impellers are attached to the inside of the volute 1 under the action of the elastic reset assembly 91, the capacity of a cavity between the centrifugal impellers 22 and the volute 1 is reduced, and the pressure of steam in the process of guiding out is maintained.
Visibly, two sides of the volute 1 are respectively provided with a pressure relief opening 111 opposite to the impeller assembly 2, one end of the pressure relief opening 111 opposite to the compression cavity 11 is provided with a pressure sensor, the outer side of the pressure relief opening 111 is communicated with the exhaust channel 13 through a pressure relief pipe 112, a first pressure relief valve 113 is arranged in the pressure relief pipe 112, and a second pressure relief valve 114 is arranged at the joint of the exhaust channel 13 and the pressure relief pipe 112. When the pressure in the sensing compression chamber 11 of the pressure sensor in the volute 1 is too high, a part of steam is directly led into the exhaust passage 13 or discharged through the pressure relief pipe 112, and the stability of the steam pressure flowing in the exhaust passage 13 is maintained.
It is apparent that both ends of the driving shaft 21 extend to the outside of the scroll case 1, a sealing groove 211 is provided at the outside of the junction of the scroll case 1 and the driving shaft 21, a roller bearing 212 connected with the driving shaft 21 is provided in the sealing groove 211, a sealing cover plate 213 connected and fixed with the driving shaft 21 and covering the inside of the sealing groove 211 is provided at the inside of the scroll case 1, a plurality of rotating grooves 214 opposite to the driving shaft 21 are provided at the rotating holes at both sides of the scroll case 1, one end of the rotating grooves 214 opposite to the sealing groove 211 is closed by a fixing ring 215, a rubber ring 216 pressed in contact with the rotating grooves 214 and the fixing ring 215 is provided in the rotating grooves 214, a gap is left between the rubber ring 216 and the driving shaft 21, the rubber ring 216 has a sealing protrusion 217 protruding toward the driving shaft 21 and contacting with the driving shaft 21, a first transmission gear 221 is fixed at one end of the driving shaft 21, a second transmission gear 222 meshed with the first transmission gear 221 is rotatably connected at the outside of the scroll case 1, the first transmission gear 221 and the second transmission gear 222 are closed in a transmission case 223 outside the scroll case 223, and the second transmission gear 222 has a transmission shaft 224 extending to the outside of the transmission case 223. The sealing groove 211 and the sealing cover plate 213 cooperate to play a role in preventing leakage to the inside of the volute 1, a certain gap is reserved between the sealing groove 211 and the sealing cover plate 213, the normal rotation of the driving shaft 21 is not influenced, the rubber ring 216 is fixed with the rotating groove 214 and the fixed ring 215 under the action of elasticity, the sealing bulge 217 of the sealing ring avoids moisture from flowing out of the rotating ring Kong Naliu, the external roller bearing 212, the first transmission gear 221 and the second transmission gear 222 are sealed by the transmission box 223, the protection effect is realized on one hand, and the influence on the circumferential stability of the driving mechanism and the driving shaft 21 due to direct transmission is avoided on the other hand.
Preferably, a reinforcing plate 19 which is arranged along the extending direction of the pipeline of the air inlet channel 12 and the pipeline of the air outlet channel 13 is connected between the outer side of the spiral case 1 and the air inlet channel 12 and the air outlet channel 13, reinforcing ribs 191 which are symmetrically distributed relative to the central axis of the driving shaft 21 are arranged on two sides of the spiral case 1, the air inlet channel 12 and the air outlet channel 13 are attached to the outer side of the spiral case 1, a mounting seat 192 is arranged below the spiral case 1, the mounting seat 192 is connected with the spiral case 1 through a plurality of back-off buckles 193 and buckling grooves 194 which are mutually buckled, and a plurality of elastic elements are clamped between the mounting seat 192 and the spiral case 1. The reinforcing plate 19 and the reinforcing ribs 191 outside the volute 1 keep the structures of the air inlet channel 12 and the air outlet channel 13 stable, and meanwhile, the volute 1 is conveniently integrally fixed as a mounting substrate, and the lower mounting seat 192 and the volute 1 are provided with vibration reduction structures, so that working noise is reduced.
In summary, the principle of this embodiment is as follows: the driving shaft 21 rotates relative to the volute 1, wherein two centrifugal impellers 22 which are oppositely arranged and mutually abutted against are arranged on the driving shaft 21, the centrifugal impellers 22 rotate along with the centrifugal impellers, steam led in by an air inlet branch pipe 14 connected with the compression cavity 11 in parallel is compressed, the centrifugal impellers 22 are arranged in the same compression cavity 11, axial forces applied to the driving shaft 21 in rotation are balanced with each other, rotation stability is kept, and compressed high-pressure high-temperature steam is led out from the exhaust channel 13 for reuse.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although more of the scroll case 1, compression chamber 11, relief port 111, relief tube 112, first relief valve 113, second relief valve 114, intake passage 12, exhaust passage 13, intake manifold 14, main housing 15, sub-housing 16, diversion passage 17, plenum chamber 18, reinforcing plate 19, reinforcing bead 191, mounting seat 192, undercut 193, undercut 194, impeller assembly 2, drive shaft 21, sealing groove 211, roller bearing 212, sealing cover plate 213, rotation groove 214, retainer ring 215, rubber ring 216, sealing protrusion 217, centrifugal impeller 22, first drive gear 221, second drive gear 222, transmission case 223, transmission shaft 224, sealing mechanism 3, sealing port 31 the seal cylinder 32, the seal ring 33, the seal groove 34, the seal strip 35, the seal seat 36, the diffuser assembly 4, the diffuser blade 41, the diffuser ring 42, the unidirectional flow guide assembly 5, the flow guide block 51, the flow guide hole 52, the return passage 53, the filter assembly 6, the filter cartridge 61, the filter cartridge 62, the switching valve 63, the support piece 64, the support rod 65, the filter body 66, the opening and closing rod 67, the opening and closing plate 68, the opening and closing opening 69, the cleaning assembly 7, the backflushing head 71, the backflushing chamber 72, the backflushing pipeline 73, the condensing assembly 8, the condensing housing 81, the condensing chamber 82, the condensing sheet 83, the limit sliding assembly 9, the elastic reset assembly 91, the limit pin 92, the limit groove 93, the limit cylinder 94, the reset seat 95, the reset head 96 and the like, but does not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (6)
1. A centrifugal vapor compressor with double impellers arranged in a back-to-back way, comprising a volute (1) with a compression cavity (11), wherein the volute (1) is provided with an air inlet channel (12) and an air outlet channel (13) which are communicated with the internal compression cavity (11), and an impeller assembly (2) is arranged in the volute (1), and the centrifugal vapor compressor is characterized in that the impeller assembly (2) is provided with a driving shaft (21) which is rotationally connected in the compression cavity (11), two centrifugal impellers (22) which are arranged in a back-to-back way and are mutually abutted against the compression cavity (11) are fixed on the driving shaft (21), the blades of the centrifugal impellers (22) are bent in opposite directions, and the centrifugal impellers (22) are respectively provided with an air inlet branch pipe (14) which is communicated with the air inlet channel (12); the spiral case (1) comprises a main casing (15) and an auxiliary casing (16) which are mutually connected through a sealing mechanism (3), a diversion channel (17) is circumferentially arranged on the periphery of the main casing (15), a diffusion component (4) is arranged between the diversion channel (17) and a compression cavity (11), and pressurizing cavities (18) opposite to a centrifugal impeller (22) are distributed on the inner walls of the main casing (15) and the auxiliary casing (16); the main casing (15) open has sealing port (31) that auxiliary casing (16) are relative, auxiliary casing (16) have and peg graft sealing tube (32) in sealing port (31), sealing mechanism (3) including encircle sealing washer (33) that distributes in sealing port (31) inboard and laminate with sealing tube (32), sealing washer (33) and sealing tube (32) opposite one side open have sealing groove (34), sealing tube (32) on be equipped with sealing strip (35) with sealing groove (34) pegging graft, sealing groove (34) and sealing strip (35) relative main casing (15) and auxiliary casing (16) axial direction slope setting, main casing (15) and auxiliary casing (16) outside junction be provided with relative and threaded connection's sealing strip seat (36), sealing strip (36) relative main casing (15) and auxiliary casing (16) axial direction slope setting and the slope orientation with sealing groove (34) and sealing strip (35) opposite, guide duct (17) inner wall be with sealing groove (35) grafting, guide duct (17) are by the diffusion of the cross-section area of guide duct (17) is by the diffusion of impeller (13) of the expansion of side that is located in the radial direction of impeller (13) of the radial direction (13) of the impeller (13) is located at one side of expansion (13), a pressure expansion ring (42) is arranged between the diversion channel (17) and the compression cavity (11), and the pressure expansion ring (42) is opposite to pressure expansion blades (41) of the centrifugal impeller (22); a unidirectional flow guide assembly (5) is arranged in the air inlet branch pipe (14), and a filtering assembly (6) is arranged at the intersection of the air inlet branch pipe (14) and the air inlet channel (12); the unidirectional flow guide assembly (5) comprises a plurality of flow guide blocks (51) which are distributed along the extending direction of a pipeline of the air inlet branch pipe (14), flow guide holes (52) for steam to flow are formed in the centers of the flow guide blocks (51), at least one backflow channel (53) is arranged in the flow guide blocks (51), two ends of the backflow channel (53) are respectively communicated with the flow guide holes (52), the backflow channel (53) is integrally inclined towards the inlet end of the flow guide holes (52) on the flow guide blocks (51), the filtering assembly (6) comprises a filter cartridge (61) inserted from the inlet end of the air inlet channel (12), a detachable filter core (62) is arranged in the filter cartridge (61), one end, opposite to the air inlet branch pipe (14), of the filter cartridge (61) is provided with a cleaning assembly (7) with the outer wall of the filter cartridge (61), one end, opposite to the air inlet channel (12), of the filter cartridge (61) is provided with a condensation assembly (8), the condensation assembly (8) is communicated with the cleaning assembly (7), the condensation assembly (8) is provided with the filter assembly (61) with the inlet port (12), the inlet port (61) is provided with a plurality of spiral supporting plates (64) which are connected with one another, the filter cartridge (64) by adopting a plurality of spiral supporting plates (64), the filter is characterized in that a porous filter body (66) is filled between the supporting sheets (64), the center of the filter element (62) is rotationally connected with an opening and closing rod (67), opening and closing plates (68) which are mutually attached are respectively arranged between two ends of the opening and closing rod (67) and two ends of the filter cylinder (61), and the opening and closing plates (68) are provided with opening and closing openings (69) which are staggered and opposite along with the rotation of the opening and closing rod (67).
2. The centrifugal steam compressor with the double impellers arranged back to back according to claim 1, wherein the cleaning assembly (7) comprises a back flushing head (71) fixed at the end of the filter drum (61), a back flushing cavity (72) opposite to the filter core (62) is arranged in the back flushing head (71), one side of the back flushing head (71) is communicated with the condensing assembly (8) through a back flushing pipeline (73) attached to the filter drum (61), the condensing assembly (8) comprises a condensing shell (81) circumferentially arranged outside the filter drum (61), a condensing cavity (82) is arranged between the condensing shell (81) and the filter drum (61), a plurality of condensing sheets (83) are distributed on the inner side and the outer side of the condensing shell (81), one end of the condensing cavity (82) is communicated with the back flushing pipeline (73), and the other end of the condensing cavity (82) is communicated with the switching valve (63).
3. The centrifugal steam compressor with the double impellers arranged back to back according to claim 1, wherein a gap is reserved between the centrifugal impellers (22), the centrifugal impellers (22) and the driving shaft (21) are connected through a limiting sliding assembly (9), an elastic reset assembly (91) is arranged between one side, opposite to a wheel disc, of each centrifugal impeller (22) and the driving shaft (21), the limiting sliding assembly (9) comprises a limiting pin (92) arranged on the driving shaft (21), a limiting groove (93) spliced with the limiting pin (92) is formed in a central hole of each centrifugal impeller (22), a limiting cylinder (94) abutted against each centrifugal impeller (22) is sleeved on each driving shaft (21), the limiting cylinder (94) is relatively fixed with the driving shaft (21) through a bolt, the elastic reset assembly (91) comprises a reset seat (95) arranged in the middle of the driving shaft (21), the reset seat (95) is connected with a reset head (96) which can stretch relatively to the centrifugal impeller (22) through an elastic element, and the reset head (96) abuts against the centrifugal impeller (22).
4. The centrifugal vapor compressor with the double impellers arranged back to back according to claim 1, wherein pressure relief openings (111) opposite to the impeller assemblies (2) are respectively arranged on two sides of the volute (1), a pressure sensor is arranged at one end, opposite to the compression cavity (11), of each pressure relief opening (111), the outer side of each pressure relief opening (111) is communicated with a gas discharge channel (13) through a pressure relief pipe (112), a first pressure relief valve (113) is arranged in each pressure relief pipe (112), and a second pressure relief valve (114) is arranged at the joint of each gas discharge channel (13) and each pressure relief pipe (112).
5. The centrifugal steam compressor with double impellers arranged opposite to each other according to claim 1, wherein two ends of the driving shaft (21) are respectively extended to the outside of the spiral case (1), a sealing groove (211) is arranged at the outer side of the joint of the spiral case (1) and the driving shaft (21), a roller bearing (212) connected with the driving shaft (21) is arranged in the sealing groove (211), a sealing cover plate (213) which is fixedly connected with the driving shaft (21) and covers the inner side of the sealing groove (211) is arranged at the inner side of the spiral case (1), a plurality of rotating grooves (214) opposite to the driving shaft (21) are formed in rotating holes at two sides of the spiral case (1), one end of each rotating groove (214) opposite to the corresponding sealing groove (211) is closed by a fixed ring (215), a rubber ring (216) which is jointed and extruded with the rotating groove (214) and the fixed ring (215) is arranged in the rotating groove (214), a gap is reserved between the rubber ring (216) and the driving shaft (21), the rubber ring (216) is provided with a bulge towards the driving shaft (21) and is provided with a plurality of rotating grooves (21), a first end of the spiral case (221) is meshed with a first gear (221) and a second gear (221) which is meshed with a first gear (221), the first transmission gear (221) and the second transmission gear (222) are enclosed in a transmission box (223) outside the volute (1), and the second transmission gear (222) is provided with a transmission shaft (224) extending to the outer side of the transmission box (223).
6. The centrifugal steam compressor with the double impellers arranged back to back according to claim 1, wherein a reinforcing plate (19) which is arranged along the extending direction of the pipelines of the air inlet channel (12) and the air outlet channel (13) is connected between the outer side of the spiral case (1) and the air inlet channel (12) and the air outlet channel (13), reinforcing ribs (191) which are symmetrically distributed relative to the central axis of the driving shaft (21) are arranged on two sides of the spiral case (1), the air inlet channel (12) and the air outlet channel (13) are attached to the outer side of the spiral case (1), a mounting seat (192) is arranged below the spiral case (1), the mounting seat (192) is connected with the spiral case (1) through a plurality of back-off buckles (193) and buckling grooves (194) which are buckled mutually, and a plurality of elastic elements are clamped between the mounting seat (192) and the spiral case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110856073.0A CN113757134B (en) | 2021-07-28 | 2021-07-28 | Centrifugal vapor compressor with double impellers arranged in back-to-back manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110856073.0A CN113757134B (en) | 2021-07-28 | 2021-07-28 | Centrifugal vapor compressor with double impellers arranged in back-to-back manner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113757134A CN113757134A (en) | 2021-12-07 |
| CN113757134B true CN113757134B (en) | 2023-07-14 |
Family
ID=78788130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110856073.0A Active CN113757134B (en) | 2021-07-28 | 2021-07-28 | Centrifugal vapor compressor with double impellers arranged in back-to-back manner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113757134B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875305B (en) * | 2023-03-03 | 2023-05-26 | 鸿陆智能科技(山东)有限公司 | Combined sealing structure of MR centrifugal vapor compression machine |
| CN116163968A (en) * | 2023-03-15 | 2023-05-26 | 上海优社动力科技有限公司 | Direct-drive double-suction centrifugal compressor |
| CN117823452A (en) * | 2023-12-12 | 2024-04-05 | 南京磁谷科技股份有限公司 | Low axial load impeller mounting structure, magnetic suspension compressor and air inlet compression method |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB727297A (en) * | 1952-06-30 | 1955-03-30 | Garrett Corp | Multistage compressor |
| CN1466427A (en) * | 2000-08-14 | 2004-01-07 | ����M�������ɭ | Motorless compressor |
| US7014418B1 (en) * | 2004-12-03 | 2006-03-21 | Honeywell International, Inc. | Multi-stage compressor and housing therefor |
| JP2006112392A (en) * | 2004-10-18 | 2006-04-27 | Torishima Pump Mfg Co Ltd | Centrifugal impeller and fluid machine |
| RU78884U1 (en) * | 2008-04-14 | 2008-12-10 | Общество с ограниченной ответственностью "Уфалейский завод металлургического машиностроения" | CENTRIFUGAL FAN ROTOR |
| CN201696309U (en) * | 2010-05-24 | 2011-01-05 | 中意机电(湖北)鼓风机制造有限公司 | High speed air centrifugal blower used for coal chemical industry |
| CN201810563U (en) * | 2009-12-29 | 2011-04-27 | 林钧浩 | Circulation-flow pressurization ventilation compressor |
| CN102374191A (en) * | 2010-08-26 | 2012-03-14 | 中意机电(湖北)鼓风机制造有限公司 | High-speed air centrifugal blower for coal chemical |
| CN202732463U (en) * | 2012-08-24 | 2013-02-13 | 赵淑芬 | Centrifugal fan sealing system |
| CN203476740U (en) * | 2013-06-02 | 2014-03-12 | 江苏金通灵流体机械科技股份有限公司 | Double-air-inflow high-speed centrifugal blower |
| CN104653496A (en) * | 2015-01-27 | 2015-05-27 | 浙江理工大学 | Single-double-suction adjustable centrifugal ventilator |
| CN204628098U (en) * | 2015-05-04 | 2015-09-09 | 亿昇(天津)科技有限公司 | A kind of axial force balance also can carry out the centrifugal blower structure of motor cooling |
| CN105065294A (en) * | 2015-07-22 | 2015-11-18 | 林钧浩 | High-temperature warm air machine achieving heat generation through two impellers |
| CN204985059U (en) * | 2015-09-30 | 2016-01-20 | 西安胜唐鼓风机有限公司 | Novel ventilation blower |
| CN205618428U (en) * | 2016-03-02 | 2016-10-05 | 云南贵鼓风机有限公司 | Impeller of centrifugal fan |
| CN106224282A (en) * | 2016-08-30 | 2016-12-14 | 四川三维鼓风机有限公司 | A kind of blower fan processed for super high temperature flue gas |
| CN206268143U (en) * | 2016-11-16 | 2017-06-20 | 派达（天津）机械设备技术有限公司 | A kind of centrifugal compressor |
| CN209743239U (en) * | 2019-04-26 | 2019-12-06 | 辽宁福鞍燃气轮机有限公司 | Novel gas turbine compressor rotor |
| CN110966229A (en) * | 2019-12-23 | 2020-04-07 | 东方电气集团东方汽轮机有限公司 | Coaxial integrated radial-axial mixed flow wet air turbine compressor rotor structure |
| CN111486108A (en) * | 2019-01-29 | 2020-08-04 | 青岛海尔智能技术研发有限公司 | Centrifugal compressor and heat pump system |
| CN112983853A (en) * | 2021-02-10 | 2021-06-18 | 西安交通大学 | High-speed turbine structure applied to large flow and large expansion ratio |
| CN113048079A (en) * | 2021-03-16 | 2021-06-29 | 西安交通大学 | Air supercharging device with back-to-back type impellers |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10233756B2 (en) * | 2013-08-27 | 2019-03-19 | Garrett Transportation I Inc. | Two-sided turbocharger wheel with differing blade parameters |
| US20150198163A1 (en) * | 2014-01-15 | 2015-07-16 | Honeywell International Inc. | Turbocharger With Twin Parallel Compressor Impellers And Having Center Housing Features For Conditioning Flow In The Rear Impeller |
| DE102015204466A1 (en) * | 2015-03-12 | 2016-09-15 | Siemens Aktiengesellschaft | Two-compressor arrangement, retrofit procedure |
| JP6710271B2 (en) * | 2016-03-31 | 2020-06-17 | 三菱重工エンジン＆ターボチャージャ株式会社 | Rotating machine wings |
-
2021
- 2021-07-28 CN CN202110856073.0A patent/CN113757134B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB727297A (en) * | 1952-06-30 | 1955-03-30 | Garrett Corp | Multistage compressor |
| CN1466427A (en) * | 2000-08-14 | 2004-01-07 | ����M�������ɭ | Motorless compressor |
| JP2006112392A (en) * | 2004-10-18 | 2006-04-27 | Torishima Pump Mfg Co Ltd | Centrifugal impeller and fluid machine |
| US7014418B1 (en) * | 2004-12-03 | 2006-03-21 | Honeywell International, Inc. | Multi-stage compressor and housing therefor |
| RU78884U1 (en) * | 2008-04-14 | 2008-12-10 | Общество с ограниченной ответственностью "Уфалейский завод металлургического машиностроения" | CENTRIFUGAL FAN ROTOR |
| CN201810563U (en) * | 2009-12-29 | 2011-04-27 | 林钧浩 | Circulation-flow pressurization ventilation compressor |
| CN201696309U (en) * | 2010-05-24 | 2011-01-05 | 中意机电(湖北)鼓风机制造有限公司 | High speed air centrifugal blower used for coal chemical industry |
| CN102374191A (en) * | 2010-08-26 | 2012-03-14 | 中意机电(湖北)鼓风机制造有限公司 | High-speed air centrifugal blower for coal chemical |
| CN202732463U (en) * | 2012-08-24 | 2013-02-13 | 赵淑芬 | Centrifugal fan sealing system |
| CN203476740U (en) * | 2013-06-02 | 2014-03-12 | 江苏金通灵流体机械科技股份有限公司 | Double-air-inflow high-speed centrifugal blower |
| CN104653496A (en) * | 2015-01-27 | 2015-05-27 | 浙江理工大学 | Single-double-suction adjustable centrifugal ventilator |
| CN204628098U (en) * | 2015-05-04 | 2015-09-09 | 亿昇(天津)科技有限公司 | A kind of axial force balance also can carry out the centrifugal blower structure of motor cooling |
| CN105065294A (en) * | 2015-07-22 | 2015-11-18 | 林钧浩 | High-temperature warm air machine achieving heat generation through two impellers |
| CN204985059U (en) * | 2015-09-30 | 2016-01-20 | 西安胜唐鼓风机有限公司 | Novel ventilation blower |
| CN205618428U (en) * | 2016-03-02 | 2016-10-05 | 云南贵鼓风机有限公司 | Impeller of centrifugal fan |
| CN106224282A (en) * | 2016-08-30 | 2016-12-14 | 四川三维鼓风机有限公司 | A kind of blower fan processed for super high temperature flue gas |
| CN206268143U (en) * | 2016-11-16 | 2017-06-20 | 派达（天津）机械设备技术有限公司 | A kind of centrifugal compressor |
| CN111486108A (en) * | 2019-01-29 | 2020-08-04 | 青岛海尔智能技术研发有限公司 | Centrifugal compressor and heat pump system |
| CN209743239U (en) * | 2019-04-26 | 2019-12-06 | 辽宁福鞍燃气轮机有限公司 | Novel gas turbine compressor rotor |
| CN110966229A (en) * | 2019-12-23 | 2020-04-07 | 东方电气集团东方汽轮机有限公司 | Coaxial integrated radial-axial mixed flow wet air turbine compressor rotor structure |
| CN112983853A (en) * | 2021-02-10 | 2021-06-18 | 西安交通大学 | High-speed turbine structure applied to large flow and large expansion ratio |
| CN113048079A (en) * | 2021-03-16 | 2021-06-29 | 西安交通大学 | Air supercharging device with back-to-back type impellers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113757134A (en) | 2021-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113757134B (en) | Centrifugal vapor compressor with double impellers arranged in back-to-back manner | |
| CN110168195B (en) | Reverse circulation device provided with turbine | |
| US4929149A (en) | Gas blower | |
| CN111207080B (en) | Chemical pump with shaft-split middle-opening conveniently-disassembled structure | |
| CA2330425C (en) | Rotary piston blower | |
| CN113048056B (en) | Cantilever hybrid dry vacuum pump | |
| CN110671501A (en) | Structure for sealing pyrolysis gas by adopting labyrinth | |
| CN111271304B (en) | Centrifugal air compressor with double cooling systems | |
| CN216306251U (en) | Centrifugal steam compressor with back-to-back arrangement of double impellers | |
| WO2013031343A1 (en) | Multi-pressure centrifugal turbo machine | |
| CN209261833U (en) | Multistage pump | |
| CN218062403U (en) | 15MW supercritical CO of volute air inlet 2 Axial flow back pressure turbine | |
| CN215566829U (en) | Stepped spiral groove annular dynamic sealing structure of water outlet section of self-balancing multi-stage pump | |
| CN109209898A (en) | Multistage pump | |
| JPH03260399A (en) | Centrifugal compressor having hybrid diffuser and swirl chamber adapted for overdiffusion of cross sectional area | |
| US2947468A (en) | Multi-stage centrifugal compressor | |
| US5020971A (en) | Rotatable assembly | |
| CN210423086U (en) | Speed-increasing transmission compact steam compressor | |
| CN113294347A (en) | Vertical double-suction pump and design method thereof | |
| CN208089448U (en) | A kind of integral type hydraulic turbine | |
| CN206268143U (en) | A kind of centrifugal compressor | |
| CN107165802B (en) | Common shaft centrifugal booster pump and plunger pump high-pressure pump set | |
| CN111425622A (en) | Shuttle valve for gas turbine | |
| CN220505382U (en) | Impeller sealing assembly for high-speed single-stage centrifugal fan | |
| CN220354059U (en) | Liquefied gas conveying booster pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231226 Address after: 310000 Room 401, 4 / F, building 3, Xixi Ginza, Xihu District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Rongda Yongneng Compressor Co.,Ltd. Patentee after: SNPTC (BEIJING) NUCLEAR POWER CONVENTIONAL ISLAND AND POWER ENGINEERING RESEARCH CENTER Co.,Ltd. Patentee after: Li Huanrong Patentee after: Li Yanfeng Patentee after: Xu Bin Patentee after: Wang Yongsheng Patentee after: Liu Le Address before: 310000 Room 401, 4 / F, building 3, Xixi Ginza, Xihu District, Hangzhou City, Zhejiang Province Patentee before: Zhejiang Rongda Yongneng Compressor Co.,Ltd. |
|
| TR01 | Transfer of patent right |